From: Sam Ravnborg Date: Thu, 25 Oct 2007 19:04:16 +0000 (+0200) Subject: x86: move i386 and x86_64 Kconfig files to x86 directory X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=47572387d58a9584c60ebbbdee56fc92c627f16f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git x86: move i386 and x86_64 Kconfig files to x86 directory After a small change in kconfig Makefile we could move all x86 Kconfig files to x86 directory. Signed-off-by: Sam Ravnborg --- diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig deleted file mode 100644 index d24e3e207ea5..000000000000 --- a/arch/i386/Kconfig +++ /dev/null @@ -1,1321 +0,0 @@ -# -# For a description of the syntax of this configuration file, -# see Documentation/kbuild/kconfig-language.txt. -# - -mainmenu "Linux Kernel Configuration" - -config X86_32 - bool - default y - help - This is Linux's home port. Linux was originally native to the Intel - 386, and runs on all the later x86 processors including the Intel - 486, 586, Pentiums, and various instruction-set-compatible chips by - AMD, Cyrix, and others. - -config GENERIC_TIME - bool - default y - -config GENERIC_CMOS_UPDATE - bool - default y - -config CLOCKSOURCE_WATCHDOG - bool - default y - -config GENERIC_CLOCKEVENTS - bool - default y - -config GENERIC_CLOCKEVENTS_BROADCAST - bool - default y - depends on X86_LOCAL_APIC - -config LOCKDEP_SUPPORT - bool - default y - -config STACKTRACE_SUPPORT - bool - default y - -config SEMAPHORE_SLEEPERS - bool - default y - -config X86 - bool - default y - -config MMU - bool - default y - -config ZONE_DMA - bool - default y - -config QUICKLIST - bool - default y - -config SBUS - bool - -config GENERIC_ISA_DMA - bool - default y - -config GENERIC_IOMAP - bool - default y - -config GENERIC_BUG - bool - default y - depends on BUG - -config GENERIC_HWEIGHT - bool - default y - -config ARCH_MAY_HAVE_PC_FDC - bool - default y - -config DMI - bool - default y - -source "init/Kconfig" - -menu "Processor type and features" - -source "kernel/time/Kconfig" - -config SMP - bool "Symmetric multi-processing support" - ---help--- - This enables support for systems with more than one CPU. If you have - a system with only one CPU, like most personal computers, say N. If - you have a system with more than one CPU, say Y. - - If you say N here, the kernel will run on single and multiprocessor - machines, but will use only one CPU of a multiprocessor machine. If - you say Y here, the kernel will run on many, but not all, - singleprocessor machines. On a singleprocessor machine, the kernel - will run faster if you say N here. - - Note that if you say Y here and choose architecture "586" or - "Pentium" under "Processor family", the kernel will not work on 486 - architectures. Similarly, multiprocessor kernels for the "PPro" - architecture may not work on all Pentium based boards. - - People using multiprocessor machines who say Y here should also say - Y to "Enhanced Real Time Clock Support", below. The "Advanced Power - Management" code will be disabled if you say Y here. - - See also the , - , - and the SMP-HOWTO available at - . - - If you don't know what to do here, say N. - -choice - prompt "Subarchitecture Type" - default X86_PC - -config X86_PC - bool "PC-compatible" - help - Choose this option if your computer is a standard PC or compatible. - -config X86_ELAN - bool "AMD Elan" - help - Select this for an AMD Elan processor. - - Do not use this option for K6/Athlon/Opteron processors! - - If unsure, choose "PC-compatible" instead. - -config X86_VOYAGER - bool "Voyager (NCR)" - select SMP if !BROKEN - help - Voyager is an MCA-based 32-way capable SMP architecture proprietary - to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based. - - *** WARNING *** - - If you do not specifically know you have a Voyager based machine, - say N here, otherwise the kernel you build will not be bootable. - -config X86_NUMAQ - bool "NUMAQ (IBM/Sequent)" - select SMP - select NUMA - help - This option is used for getting Linux to run on a (IBM/Sequent) NUMA - multiquad box. This changes the way that processors are bootstrapped, - and uses Clustered Logical APIC addressing mode instead of Flat Logical. - You will need a new lynxer.elf file to flash your firmware with - send - email to . - -config X86_SUMMIT - bool "Summit/EXA (IBM x440)" - depends on SMP - help - This option is needed for IBM systems that use the Summit/EXA chipset. - In particular, it is needed for the x440. - - If you don't have one of these computers, you should say N here. - If you want to build a NUMA kernel, you must select ACPI. - -config X86_BIGSMP - bool "Support for other sub-arch SMP systems with more than 8 CPUs" - depends on SMP - help - This option is needed for the systems that have more than 8 CPUs - and if the system is not of any sub-arch type above. - - If you don't have such a system, you should say N here. - -config X86_VISWS - bool "SGI 320/540 (Visual Workstation)" - help - The SGI Visual Workstation series is an IA32-based workstation - based on SGI systems chips with some legacy PC hardware attached. - - Say Y here to create a kernel to run on the SGI 320 or 540. - - A kernel compiled for the Visual Workstation will not run on PCs - and vice versa. See for details. - -config X86_GENERICARCH - bool "Generic architecture (Summit, bigsmp, ES7000, default)" - help - This option compiles in the Summit, bigsmp, ES7000, default subarchitectures. - It is intended for a generic binary kernel. - If you want a NUMA kernel, select ACPI. We need SRAT for NUMA. - -config X86_ES7000 - bool "Support for Unisys ES7000 IA32 series" - depends on SMP - help - Support for Unisys ES7000 systems. Say 'Y' here if this kernel is - supposed to run on an IA32-based Unisys ES7000 system. - Only choose this option if you have such a system, otherwise you - should say N here. - -endchoice - -config SCHED_NO_NO_OMIT_FRAME_POINTER - bool "Single-depth WCHAN output" - default y - help - Calculate simpler /proc//wchan values. If this option - is disabled then wchan values will recurse back to the - caller function. This provides more accurate wchan values, - at the expense of slightly more scheduling overhead. - - If in doubt, say "Y". - -config PARAVIRT - bool - depends on !(X86_VISWS || X86_VOYAGER) - help - This changes the kernel so it can modify itself when it is run - under a hypervisor, potentially improving performance significantly - over full virtualization. However, when run without a hypervisor - the kernel is theoretically slower and slightly larger. - -menuconfig PARAVIRT_GUEST - bool "Paravirtualized guest support" - help - Say Y here to get to see options related to running Linux under - various hypervisors. This option alone does not add any kernel code. - - If you say N, all options in this submenu will be skipped and disabled. - -if PARAVIRT_GUEST - -source "arch/x86/xen/Kconfig" - -config VMI - bool "VMI Guest support" - select PARAVIRT - depends on !(X86_VISWS || X86_VOYAGER) - help - VMI provides a paravirtualized interface to the VMware ESX server - (it could be used by other hypervisors in theory too, but is not - at the moment), by linking the kernel to a GPL-ed ROM module - provided by the hypervisor. - -source "arch/x86/lguest/Kconfig" - -endif - -config ACPI_SRAT - bool - default y - depends on ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH) - select ACPI_NUMA - -config HAVE_ARCH_PARSE_SRAT - bool - default y - depends on ACPI_SRAT - -config X86_SUMMIT_NUMA - bool - default y - depends on NUMA && (X86_SUMMIT || X86_GENERICARCH) - -config X86_CYCLONE_TIMER - bool - default y - depends on X86_SUMMIT || X86_GENERICARCH - -config ES7000_CLUSTERED_APIC - bool - default y - depends on SMP && X86_ES7000 && MPENTIUMIII - -source "arch/i386/Kconfig.cpu" - -config HPET_TIMER - bool "HPET Timer Support" - help - This enables the use of the HPET for the kernel's internal timer. - HPET is the next generation timer replacing legacy 8254s. - You can safely choose Y here. However, HPET will only be - activated if the platform and the BIOS support this feature. - Otherwise the 8254 will be used for timing services. - - Choose N to continue using the legacy 8254 timer. - -config HPET_EMULATE_RTC - bool - depends on HPET_TIMER && RTC=y - default y - -config NR_CPUS - int "Maximum number of CPUs (2-255)" - range 2 255 - depends on SMP - default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000 - default "8" - help - This allows you to specify the maximum number of CPUs which this - kernel will support. The maximum supported value is 255 and the - minimum value which makes sense is 2. - - This is purely to save memory - each supported CPU adds - approximately eight kilobytes to the kernel image. - -config SCHED_SMT - bool "SMT (Hyperthreading) scheduler support" - depends on X86_HT - help - SMT scheduler support improves the CPU scheduler's decision making - when dealing with Intel Pentium 4 chips with HyperThreading at a - cost of slightly increased overhead in some places. If unsure say - N here. - -config SCHED_MC - bool "Multi-core scheduler support" - depends on X86_HT - default y - help - Multi-core scheduler support improves the CPU scheduler's decision - making when dealing with multi-core CPU chips at a cost of slightly - increased overhead in some places. If unsure say N here. - -source "kernel/Kconfig.preempt" - -config X86_UP_APIC - bool "Local APIC support on uniprocessors" - depends on !SMP && !(X86_VISWS || X86_VOYAGER || X86_GENERICARCH) - help - A local APIC (Advanced Programmable Interrupt Controller) is an - integrated interrupt controller in the CPU. If you have a single-CPU - system which has a processor with a local APIC, you can say Y here to - enable and use it. If you say Y here even though your machine doesn't - have a local APIC, then the kernel will still run with no slowdown at - all. The local APIC supports CPU-generated self-interrupts (timer, - performance counters), and the NMI watchdog which detects hard - lockups. - -config X86_UP_IOAPIC - bool "IO-APIC support on uniprocessors" - depends on X86_UP_APIC - help - An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an - SMP-capable replacement for PC-style interrupt controllers. Most - SMP systems and many recent uniprocessor systems have one. - - If you have a single-CPU system with an IO-APIC, you can say Y here - to use it. If you say Y here even though your machine doesn't have - an IO-APIC, then the kernel will still run with no slowdown at all. - -config X86_LOCAL_APIC - bool - depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH - default y - -config X86_IO_APIC - bool - depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH - default y - -config X86_VISWS_APIC - bool - depends on X86_VISWS - default y - -config X86_MCE - bool "Machine Check Exception" - depends on !X86_VOYAGER - ---help--- - Machine Check Exception support allows the processor to notify the - kernel if it detects a problem (e.g. overheating, component failure). - The action the kernel takes depends on the severity of the problem, - ranging from a warning message on the console, to halting the machine. - Your processor must be a Pentium or newer to support this - check the - flags in /proc/cpuinfo for mce. Note that some older Pentium systems - have a design flaw which leads to false MCE events - hence MCE is - disabled on all P5 processors, unless explicitly enabled with "mce" - as a boot argument. Similarly, if MCE is built in and creates a - problem on some new non-standard machine, you can boot with "nomce" - to disable it. MCE support simply ignores non-MCE processors like - the 386 and 486, so nearly everyone can say Y here. - -config X86_MCE_NONFATAL - tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4" - depends on X86_MCE - help - Enabling this feature starts a timer that triggers every 5 seconds which - will look at the machine check registers to see if anything happened. - Non-fatal problems automatically get corrected (but still logged). - Disable this if you don't want to see these messages. - Seeing the messages this option prints out may be indicative of dying - or out-of-spec (ie, overclocked) hardware. - This option only does something on certain CPUs. - (AMD Athlon/Duron and Intel Pentium 4) - -config X86_MCE_P4THERMAL - bool "check for P4 thermal throttling interrupt." - depends on X86_MCE && (X86_UP_APIC || SMP) && !X86_VISWS - help - Enabling this feature will cause a message to be printed when the P4 - enters thermal throttling. - -config VM86 - default y - bool "Enable VM86 support" if EMBEDDED - help - This option is required by programs like DOSEMU to run 16-bit legacy - code on X86 processors. It also may be needed by software like - XFree86 to initialize some video cards via BIOS. Disabling this - option saves about 6k. - -config TOSHIBA - tristate "Toshiba Laptop support" - ---help--- - This adds a driver to safely access the System Management Mode of - the CPU on Toshiba portables with a genuine Toshiba BIOS. It does - not work on models with a Phoenix BIOS. The System Management Mode - is used to set the BIOS and power saving options on Toshiba portables. - - For information on utilities to make use of this driver see the - Toshiba Linux utilities web site at: - . - - Say Y if you intend to run this kernel on a Toshiba portable. - Say N otherwise. - -config I8K - tristate "Dell laptop support" - ---help--- - This adds a driver to safely access the System Management Mode - of the CPU on the Dell Inspiron 8000. The System Management Mode - is used to read cpu temperature and cooling fan status and to - control the fans on the I8K portables. - - This driver has been tested only on the Inspiron 8000 but it may - also work with other Dell laptops. You can force loading on other - models by passing the parameter `force=1' to the module. Use at - your own risk. - - For information on utilities to make use of this driver see the - I8K Linux utilities web site at: - - - Say Y if you intend to run this kernel on a Dell Inspiron 8000. - Say N otherwise. - -config X86_REBOOTFIXUPS - bool "Enable X86 board specific fixups for reboot" - depends on X86 - default n - ---help--- - This enables chipset and/or board specific fixups to be done - in order to get reboot to work correctly. This is only needed on - some combinations of hardware and BIOS. The symptom, for which - this config is intended, is when reboot ends with a stalled/hung - system. - - Currently, the only fixup is for the Geode machines using - CS5530A and CS5536 chipsets. - - Say Y if you want to enable the fixup. Currently, it's safe to - enable this option even if you don't need it. - Say N otherwise. - -config MICROCODE - tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support" - select FW_LOADER - ---help--- - If you say Y here, you will be able to update the microcode on - Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II, - Pentium III, Pentium 4, Xeon etc. You will obviously need the - actual microcode binary data itself which is not shipped with the - Linux kernel. - - For latest news and information on obtaining all the required - ingredients for this driver, check: - . - - To compile this driver as a module, choose M here: the - module will be called microcode. - -config MICROCODE_OLD_INTERFACE - bool - depends on MICROCODE - default y - -config X86_MSR - tristate "/dev/cpu/*/msr - Model-specific register support" - help - This device gives privileged processes access to the x86 - Model-Specific Registers (MSRs). It is a character device with - major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. - MSR accesses are directed to a specific CPU on multi-processor - systems. - -config X86_CPUID - tristate "/dev/cpu/*/cpuid - CPU information support" - help - This device gives processes access to the x86 CPUID instruction to - be executed on a specific processor. It is a character device - with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to - /dev/cpu/31/cpuid. - -source "drivers/firmware/Kconfig" - -choice - prompt "High Memory Support" - default HIGHMEM4G if !X86_NUMAQ - default HIGHMEM64G if X86_NUMAQ - -config NOHIGHMEM - bool "off" - depends on !X86_NUMAQ - ---help--- - Linux can use up to 64 Gigabytes of physical memory on x86 systems. - However, the address space of 32-bit x86 processors is only 4 - Gigabytes large. That means that, if you have a large amount of - physical memory, not all of it can be "permanently mapped" by the - kernel. The physical memory that's not permanently mapped is called - "high memory". - - If you are compiling a kernel which will never run on a machine with - more than 1 Gigabyte total physical RAM, answer "off" here (default - choice and suitable for most users). This will result in a "3GB/1GB" - split: 3GB are mapped so that each process sees a 3GB virtual memory - space and the remaining part of the 4GB virtual memory space is used - by the kernel to permanently map as much physical memory as - possible. - - If the machine has between 1 and 4 Gigabytes physical RAM, then - answer "4GB" here. - - If more than 4 Gigabytes is used then answer "64GB" here. This - selection turns Intel PAE (Physical Address Extension) mode on. - PAE implements 3-level paging on IA32 processors. PAE is fully - supported by Linux, PAE mode is implemented on all recent Intel - processors (Pentium Pro and better). NOTE: If you say "64GB" here, - then the kernel will not boot on CPUs that don't support PAE! - - The actual amount of total physical memory will either be - auto detected or can be forced by using a kernel command line option - such as "mem=256M". (Try "man bootparam" or see the documentation of - your boot loader (lilo or loadlin) about how to pass options to the - kernel at boot time.) - - If unsure, say "off". - -config HIGHMEM4G - bool "4GB" - depends on !X86_NUMAQ - help - Select this if you have a 32-bit processor and between 1 and 4 - gigabytes of physical RAM. - -config HIGHMEM64G - bool "64GB" - depends on !M386 && !M486 - select X86_PAE - help - Select this if you have a 32-bit processor and more than 4 - gigabytes of physical RAM. - -endchoice - -choice - depends on EXPERIMENTAL - prompt "Memory split" if EMBEDDED - default VMSPLIT_3G - help - Select the desired split between kernel and user memory. - - If the address range available to the kernel is less than the - physical memory installed, the remaining memory will be available - as "high memory". Accessing high memory is a little more costly - than low memory, as it needs to be mapped into the kernel first. - Note that increasing the kernel address space limits the range - available to user programs, making the address space there - tighter. Selecting anything other than the default 3G/1G split - will also likely make your kernel incompatible with binary-only - kernel modules. - - If you are not absolutely sure what you are doing, leave this - option alone! - - config VMSPLIT_3G - bool "3G/1G user/kernel split" - config VMSPLIT_3G_OPT - depends on !X86_PAE - bool "3G/1G user/kernel split (for full 1G low memory)" - config VMSPLIT_2G - bool "2G/2G user/kernel split" - config VMSPLIT_2G_OPT - depends on !X86_PAE - bool "2G/2G user/kernel split (for full 2G low memory)" - config VMSPLIT_1G - bool "1G/3G user/kernel split" -endchoice - -config PAGE_OFFSET - hex - default 0xB0000000 if VMSPLIT_3G_OPT - default 0x80000000 if VMSPLIT_2G - default 0x78000000 if VMSPLIT_2G_OPT - default 0x40000000 if VMSPLIT_1G - default 0xC0000000 - -config HIGHMEM - bool - depends on HIGHMEM64G || HIGHMEM4G - default y - -config X86_PAE - bool "PAE (Physical Address Extension) Support" - default n - depends on !HIGHMEM4G - select RESOURCES_64BIT - help - PAE is required for NX support, and furthermore enables - larger swapspace support for non-overcommit purposes. It - has the cost of more pagetable lookup overhead, and also - consumes more pagetable space per process. - -# Common NUMA Features -config NUMA - bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)" - depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL - default n if X86_PC - default y if (X86_NUMAQ || X86_SUMMIT) - help - NUMA support for i386. This is currently highly experimental - and should be only used for kernel development. It might also - cause boot failures. - -comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI" - depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI) - -config NODES_SHIFT - int - default "4" if X86_NUMAQ - default "3" - depends on NEED_MULTIPLE_NODES - -config HAVE_ARCH_BOOTMEM_NODE - bool - depends on NUMA - default y - -config ARCH_HAVE_MEMORY_PRESENT - bool - depends on DISCONTIGMEM - default y - -config NEED_NODE_MEMMAP_SIZE - bool - depends on DISCONTIGMEM || SPARSEMEM - default y - -config HAVE_ARCH_ALLOC_REMAP - bool - depends on NUMA - default y - -config ARCH_FLATMEM_ENABLE - def_bool y - depends on (ARCH_SELECT_MEMORY_MODEL && X86_PC) - -config ARCH_DISCONTIGMEM_ENABLE - def_bool y - depends on NUMA - -config ARCH_DISCONTIGMEM_DEFAULT - def_bool y - depends on NUMA - -config ARCH_SPARSEMEM_ENABLE - def_bool y - depends on (NUMA || (X86_PC && EXPERIMENTAL)) - select SPARSEMEM_STATIC - -config ARCH_SELECT_MEMORY_MODEL - def_bool y - depends on ARCH_SPARSEMEM_ENABLE - -config ARCH_POPULATES_NODE_MAP - def_bool y - -source "mm/Kconfig" - -config HIGHPTE - bool "Allocate 3rd-level pagetables from highmem" - depends on HIGHMEM4G || HIGHMEM64G - help - The VM uses one page table entry for each page of physical memory. - For systems with a lot of RAM, this can be wasteful of precious - low memory. Setting this option will put user-space page table - entries in high memory. - -config MATH_EMULATION - bool "Math emulation" - ---help--- - Linux can emulate a math coprocessor (used for floating point - operations) if you don't have one. 486DX and Pentium processors have - a math coprocessor built in, 486SX and 386 do not, unless you added - a 487DX or 387, respectively. (The messages during boot time can - give you some hints here ["man dmesg"].) Everyone needs either a - coprocessor or this emulation. - - If you don't have a math coprocessor, you need to say Y here; if you - say Y here even though you have a coprocessor, the coprocessor will - be used nevertheless. (This behavior can be changed with the kernel - command line option "no387", which comes handy if your coprocessor - is broken. Try "man bootparam" or see the documentation of your boot - loader (lilo or loadlin) about how to pass options to the kernel at - boot time.) This means that it is a good idea to say Y here if you - intend to use this kernel on different machines. - - More information about the internals of the Linux math coprocessor - emulation can be found in . - - If you are not sure, say Y; apart from resulting in a 66 KB bigger - kernel, it won't hurt. - -config MTRR - bool "MTRR (Memory Type Range Register) support" - ---help--- - On Intel P6 family processors (Pentium Pro, Pentium II and later) - the Memory Type Range Registers (MTRRs) may be used to control - processor access to memory ranges. This is most useful if you have - a video (VGA) card on a PCI or AGP bus. Enabling write-combining - allows bus write transfers to be combined into a larger transfer - before bursting over the PCI/AGP bus. This can increase performance - of image write operations 2.5 times or more. Saying Y here creates a - /proc/mtrr file which may be used to manipulate your processor's - MTRRs. Typically the X server should use this. - - This code has a reasonably generic interface so that similar - control registers on other processors can be easily supported - as well: - - The Cyrix 6x86, 6x86MX and M II processors have Address Range - Registers (ARRs) which provide a similar functionality to MTRRs. For - these, the ARRs are used to emulate the MTRRs. - The AMD K6-2 (stepping 8 and above) and K6-3 processors have two - MTRRs. The Centaur C6 (WinChip) has 8 MCRs, allowing - write-combining. All of these processors are supported by this code - and it makes sense to say Y here if you have one of them. - - Saying Y here also fixes a problem with buggy SMP BIOSes which only - set the MTRRs for the boot CPU and not for the secondary CPUs. This - can lead to all sorts of problems, so it's good to say Y here. - - You can safely say Y even if your machine doesn't have MTRRs, you'll - just add about 9 KB to your kernel. - - See for more information. - -config EFI - bool "Boot from EFI support" - depends on ACPI - default n - ---help--- - This enables the kernel to boot on EFI platforms using - system configuration information passed to it from the firmware. - This also enables the kernel to use any EFI runtime services that are - available (such as the EFI variable services). - - This option is only useful on systems that have EFI firmware - and will result in a kernel image that is ~8k larger. In addition, - you must use the latest ELILO loader available at - in order to take advantage of - kernel initialization using EFI information (neither GRUB nor LILO know - anything about EFI). However, even with this option, the resultant - kernel should continue to boot on existing non-EFI platforms. - -config IRQBALANCE - bool "Enable kernel irq balancing" - depends on SMP && X86_IO_APIC - default y - help - The default yes will allow the kernel to do irq load balancing. - Saying no will keep the kernel from doing irq load balancing. - -# turning this on wastes a bunch of space. -# Summit needs it only when NUMA is on -config BOOT_IOREMAP - bool - depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI)) - default y - -config SECCOMP - bool "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS - default y - help - This kernel feature is useful for number crunching applications - that may need to compute untrusted bytecode during their - execution. By using pipes or other transports made available to - the process as file descriptors supporting the read/write - syscalls, it's possible to isolate those applications in - their own address space using seccomp. Once seccomp is - enabled via /proc//seccomp, it cannot be disabled - and the task is only allowed to execute a few safe syscalls - defined by each seccomp mode. - - If unsure, say Y. Only embedded should say N here. - -source kernel/Kconfig.hz - -config KEXEC - bool "kexec system call" - help - kexec is a system call that implements the ability to shutdown your - current kernel, and to start another kernel. It is like a reboot - but it is independent of the system firmware. And like a reboot - you can start any kernel with it, not just Linux. - - The name comes from the similarity to the exec system call. - - It is an ongoing process to be certain the hardware in a machine - is properly shutdown, so do not be surprised if this code does not - initially work for you. It may help to enable device hotplugging - support. As of this writing the exact hardware interface is - strongly in flux, so no good recommendation can be made. - -config CRASH_DUMP - bool "kernel crash dumps (EXPERIMENTAL)" - depends on EXPERIMENTAL - depends on HIGHMEM - help - Generate crash dump after being started by kexec. - This should be normally only set in special crash dump kernels - which are loaded in the main kernel with kexec-tools into - a specially reserved region and then later executed after - a crash by kdump/kexec. The crash dump kernel must be compiled - to a memory address not used by the main kernel or BIOS using - PHYSICAL_START, or it must be built as a relocatable image - (CONFIG_RELOCATABLE=y). - For more details see Documentation/kdump/kdump.txt - -config PHYSICAL_START - hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) - default "0x1000000" if X86_NUMAQ - default "0x100000" - help - This gives the physical address where the kernel is loaded. - - If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then - bzImage will decompress itself to above physical address and - run from there. Otherwise, bzImage will run from the address where - it has been loaded by the boot loader and will ignore above physical - address. - - In normal kdump cases one does not have to set/change this option - as now bzImage can be compiled as a completely relocatable image - (CONFIG_RELOCATABLE=y) and be used to load and run from a different - address. This option is mainly useful for the folks who don't want - to use a bzImage for capturing the crash dump and want to use a - vmlinux instead. vmlinux is not relocatable hence a kernel needs - to be specifically compiled to run from a specific memory area - (normally a reserved region) and this option comes handy. - - So if you are using bzImage for capturing the crash dump, leave - the value here unchanged to 0x100000 and set CONFIG_RELOCATABLE=y. - Otherwise if you plan to use vmlinux for capturing the crash dump - change this value to start of the reserved region (Typically 16MB - 0x1000000). In other words, it can be set based on the "X" value as - specified in the "crashkernel=YM@XM" command line boot parameter - passed to the panic-ed kernel. Typically this parameter is set as - crashkernel=64M@16M. Please take a look at - Documentation/kdump/kdump.txt for more details about crash dumps. - - Usage of bzImage for capturing the crash dump is recommended as - one does not have to build two kernels. Same kernel can be used - as production kernel and capture kernel. Above option should have - gone away after relocatable bzImage support is introduced. But it - is present because there are users out there who continue to use - vmlinux for dump capture. This option should go away down the - line. - - Don't change this unless you know what you are doing. - -config RELOCATABLE - bool "Build a relocatable kernel (EXPERIMENTAL)" - depends on EXPERIMENTAL - help - This builds a kernel image that retains relocation information - so it can be loaded someplace besides the default 1MB. - The relocations tend to make the kernel binary about 10% larger, - but are discarded at runtime. - - One use is for the kexec on panic case where the recovery kernel - must live at a different physical address than the primary - kernel. - -config PHYSICAL_ALIGN - hex "Alignment value to which kernel should be aligned" - default "0x100000" - range 0x2000 0x400000 - help - This value puts the alignment restrictions on physical address - where kernel is loaded and run from. Kernel is compiled for an - address which meets above alignment restriction. - - If bootloader loads the kernel at a non-aligned address and - CONFIG_RELOCATABLE is set, kernel will move itself to nearest - address aligned to above value and run from there. - - If bootloader loads the kernel at a non-aligned address and - CONFIG_RELOCATABLE is not set, kernel will ignore the run time - load address and decompress itself to the address it has been - compiled for and run from there. The address for which kernel is - compiled already meets above alignment restrictions. Hence the - end result is that kernel runs from a physical address meeting - above alignment restrictions. - - Don't change this unless you know what you are doing. - -config HOTPLUG_CPU - bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)" - depends on SMP && HOTPLUG && EXPERIMENTAL && !X86_VOYAGER - ---help--- - Say Y here to experiment with turning CPUs off and on, and to - enable suspend on SMP systems. CPUs can be controlled through - /sys/devices/system/cpu. - -config COMPAT_VDSO - bool "Compat VDSO support" - default y - help - Map the VDSO to the predictable old-style address too. - ---help--- - Say N here if you are running a sufficiently recent glibc - version (2.3.3 or later), to remove the high-mapped - VDSO mapping and to exclusively use the randomized VDSO. - - If unsure, say Y. - -endmenu - -config ARCH_ENABLE_MEMORY_HOTPLUG - def_bool y - depends on HIGHMEM - -menu "Power management options (ACPI, APM)" - depends on !X86_VOYAGER - -source kernel/power/Kconfig - -source "drivers/acpi/Kconfig" - -menuconfig APM - tristate "APM (Advanced Power Management) BIOS support" - depends on PM_SLEEP && !X86_VISWS - ---help--- - APM is a BIOS specification for saving power using several different - techniques. This is mostly useful for battery powered laptops with - APM compliant BIOSes. If you say Y here, the system time will be - reset after a RESUME operation, the /proc/apm device will provide - battery status information, and user-space programs will receive - notification of APM "events" (e.g. battery status change). - - If you select "Y" here, you can disable actual use of the APM - BIOS by passing the "apm=off" option to the kernel at boot time. - - Note that the APM support is almost completely disabled for - machines with more than one CPU. - - In order to use APM, you will need supporting software. For location - and more information, read and the - Battery Powered Linux mini-HOWTO, available from - . - - This driver does not spin down disk drives (see the hdparm(8) - manpage ("man 8 hdparm") for that), and it doesn't turn off - VESA-compliant "green" monitors. - - This driver does not support the TI 4000M TravelMate and the ACER - 486/DX4/75 because they don't have compliant BIOSes. Many "green" - desktop machines also don't have compliant BIOSes, and this driver - may cause those machines to panic during the boot phase. - - Generally, if you don't have a battery in your machine, there isn't - much point in using this driver and you should say N. If you get - random kernel OOPSes or reboots that don't seem to be related to - anything, try disabling/enabling this option (or disabling/enabling - APM in your BIOS). - - Some other things you should try when experiencing seemingly random, - "weird" problems: - - 1) make sure that you have enough swap space and that it is - enabled. - 2) pass the "no-hlt" option to the kernel - 3) switch on floating point emulation in the kernel and pass - the "no387" option to the kernel - 4) pass the "floppy=nodma" option to the kernel - 5) pass the "mem=4M" option to the kernel (thereby disabling - all but the first 4 MB of RAM) - 6) make sure that the CPU is not over clocked. - 7) read the sig11 FAQ at - 8) disable the cache from your BIOS settings - 9) install a fan for the video card or exchange video RAM - 10) install a better fan for the CPU - 11) exchange RAM chips - 12) exchange the motherboard. - - To compile this driver as a module, choose M here: the - module will be called apm. - -if APM - -config APM_IGNORE_USER_SUSPEND - bool "Ignore USER SUSPEND" - help - This option will ignore USER SUSPEND requests. On machines with a - compliant APM BIOS, you want to say N. However, on the NEC Versa M - series notebooks, it is necessary to say Y because of a BIOS bug. - -config APM_DO_ENABLE - bool "Enable PM at boot time" - ---help--- - Enable APM features at boot time. From page 36 of the APM BIOS - specification: "When disabled, the APM BIOS does not automatically - power manage devices, enter the Standby State, enter the Suspend - State, or take power saving steps in response to CPU Idle calls." - This driver will make CPU Idle calls when Linux is idle (unless this - feature is turned off -- see "Do CPU IDLE calls", below). This - should always save battery power, but more complicated APM features - will be dependent on your BIOS implementation. You may need to turn - this option off if your computer hangs at boot time when using APM - support, or if it beeps continuously instead of suspending. Turn - this off if you have a NEC UltraLite Versa 33/C or a Toshiba - T400CDT. This is off by default since most machines do fine without - this feature. - -config APM_CPU_IDLE - bool "Make CPU Idle calls when idle" - help - Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop. - On some machines, this can activate improved power savings, such as - a slowed CPU clock rate, when the machine is idle. These idle calls - are made after the idle loop has run for some length of time (e.g., - 333 mS). On some machines, this will cause a hang at boot time or - whenever the CPU becomes idle. (On machines with more than one CPU, - this option does nothing.) - -config APM_DISPLAY_BLANK - bool "Enable console blanking using APM" - help - Enable console blanking using the APM. Some laptops can use this to - turn off the LCD backlight when the screen blanker of the Linux - virtual console blanks the screen. Note that this is only used by - the virtual console screen blanker, and won't turn off the backlight - when using the X Window system. This also doesn't have anything to - do with your VESA-compliant power-saving monitor. Further, this - option doesn't work for all laptops -- it might not turn off your - backlight at all, or it might print a lot of errors to the console, - especially if you are using gpm. - -config APM_ALLOW_INTS - bool "Allow interrupts during APM BIOS calls" - help - Normally we disable external interrupts while we are making calls to - the APM BIOS as a measure to lessen the effects of a badly behaving - BIOS implementation. The BIOS should reenable interrupts if it - needs to. Unfortunately, some BIOSes do not -- especially those in - many of the newer IBM Thinkpads. If you experience hangs when you - suspend, try setting this to Y. Otherwise, say N. - -config APM_REAL_MODE_POWER_OFF - bool "Use real mode APM BIOS call to power off" - help - Use real mode APM BIOS calls to switch off the computer. This is - a work-around for a number of buggy BIOSes. Switch this option on if - your computer crashes instead of powering off properly. - -endif # APM - -source "arch/x86/kernel/cpu/cpufreq/Kconfig_32" - -source "drivers/cpuidle/Kconfig" - -endmenu - -menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)" - -config PCI - bool "PCI support" if !X86_VISWS - depends on !X86_VOYAGER - default y if X86_VISWS - select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC) - help - Find out whether you have a PCI motherboard. PCI is the name of a - bus system, i.e. the way the CPU talks to the other stuff inside - your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or - VESA. If you have PCI, say Y, otherwise N. - - The PCI-HOWTO, available from - , contains valuable - information about which PCI hardware does work under Linux and which - doesn't. - -choice - prompt "PCI access mode" - depends on PCI && !X86_VISWS - default PCI_GOANY - ---help--- - On PCI systems, the BIOS can be used to detect the PCI devices and - determine their configuration. However, some old PCI motherboards - have BIOS bugs and may crash if this is done. Also, some embedded - PCI-based systems don't have any BIOS at all. Linux can also try to - detect the PCI hardware directly without using the BIOS. - - With this option, you can specify how Linux should detect the - PCI devices. If you choose "BIOS", the BIOS will be used, - if you choose "Direct", the BIOS won't be used, and if you - choose "MMConfig", then PCI Express MMCONFIG will be used. - If you choose "Any", the kernel will try MMCONFIG, then the - direct access method and falls back to the BIOS if that doesn't - work. If unsure, go with the default, which is "Any". - -config PCI_GOBIOS - bool "BIOS" - -config PCI_GOMMCONFIG - bool "MMConfig" - -config PCI_GODIRECT - bool "Direct" - -config PCI_GOANY - bool "Any" - -endchoice - -config PCI_BIOS - bool - depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY) - default y - -config PCI_DIRECT - bool - depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS) - default y - -config PCI_MMCONFIG - bool - depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY) - default y - -config PCI_DOMAINS - bool - depends on PCI - default y - -source "drivers/pci/pcie/Kconfig" - -source "drivers/pci/Kconfig" - -config ISA_DMA_API - bool - default y - -config ISA - bool "ISA support" - depends on !(X86_VOYAGER || X86_VISWS) - help - Find out whether you have ISA slots on your motherboard. ISA is the - name of a bus system, i.e. the way the CPU talks to the other stuff - inside your box. Other bus systems are PCI, EISA, MicroChannel - (MCA) or VESA. ISA is an older system, now being displaced by PCI; - newer boards don't support it. If you have ISA, say Y, otherwise N. - -config EISA - bool "EISA support" - depends on ISA - ---help--- - The Extended Industry Standard Architecture (EISA) bus was - developed as an open alternative to the IBM MicroChannel bus. - - The EISA bus provided some of the features of the IBM MicroChannel - bus while maintaining backward compatibility with cards made for - the older ISA bus. The EISA bus saw limited use between 1988 and - 1995 when it was made obsolete by the PCI bus. - - Say Y here if you are building a kernel for an EISA-based machine. - - Otherwise, say N. - -source "drivers/eisa/Kconfig" - -config MCA - bool "MCA support" if !(X86_VISWS || X86_VOYAGER) - default y if X86_VOYAGER - help - MicroChannel Architecture is found in some IBM PS/2 machines and - laptops. It is a bus system similar to PCI or ISA. See - (and especially the web page given - there) before attempting to build an MCA bus kernel. - -source "drivers/mca/Kconfig" - -config SCx200 - tristate "NatSemi SCx200 support" - depends on !X86_VOYAGER - help - This provides basic support for National Semiconductor's - (now AMD's) Geode processors. The driver probes for the - PCI-IDs of several on-chip devices, so its a good dependency - for other scx200_* drivers. - - If compiled as a module, the driver is named scx200. - -config SCx200HR_TIMER - tristate "NatSemi SCx200 27MHz High-Resolution Timer Support" - depends on SCx200 && GENERIC_TIME - default y - help - This driver provides a clocksource built upon the on-chip - 27MHz high-resolution timer. Its also a workaround for - NSC Geode SC-1100's buggy TSC, which loses time when the - processor goes idle (as is done by the scheduler). The - other workaround is idle=poll boot option. - -config GEODE_MFGPT_TIMER - bool "Geode Multi-Function General Purpose Timer (MFGPT) events" - depends on MGEODE_LX && GENERIC_TIME && GENERIC_CLOCKEVENTS - default y - help - This driver provides a clock event source based on the MFGPT - timer(s) in the CS5535 and CS5536 companion chip for the geode. - MFGPTs have a better resolution and max interval than the - generic PIT, and are suitable for use as high-res timers. - -config K8_NB - def_bool y - depends on AGP_AMD64 - -source "drivers/pcmcia/Kconfig" - -source "drivers/pci/hotplug/Kconfig" - -endmenu - -menu "Executable file formats" - -source "fs/Kconfig.binfmt" - -endmenu - -source "net/Kconfig" - -source "drivers/Kconfig" - -source "fs/Kconfig" - -source "kernel/Kconfig.instrumentation" - -source "arch/x86/Kconfig.debug" - -source "security/Kconfig" - -source "crypto/Kconfig" - -source "lib/Kconfig" - -# -# Use the generic interrupt handling code in kernel/irq/: -# -config GENERIC_HARDIRQS - bool - default y - -config GENERIC_IRQ_PROBE - bool - default y - -config GENERIC_PENDING_IRQ - bool - depends on GENERIC_HARDIRQS && SMP - default y - -config X86_SMP - bool - depends on SMP && !X86_VOYAGER - default y - -config X86_HT - bool - depends on SMP && !(X86_VISWS || X86_VOYAGER) - default y - -config X86_BIOS_REBOOT - bool - depends on !(X86_VISWS || X86_VOYAGER) - default y - -config X86_TRAMPOLINE - bool - depends on X86_SMP || (X86_VOYAGER && SMP) - default y - -config KTIME_SCALAR - bool - default y diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu deleted file mode 100644 index 0e2adadf5905..000000000000 --- a/arch/i386/Kconfig.cpu +++ /dev/null @@ -1,372 +0,0 @@ -# Put here option for CPU selection and depending optimization -if !X86_ELAN - -choice - prompt "Processor family" - default M686 - -config M386 - bool "386" - depends on !UML - ---help--- - This is the processor type of your CPU. This information is used for - optimizing purposes. In order to compile a kernel that can run on - all x86 CPU types (albeit not optimally fast), you can specify - "386" here. - - The kernel will not necessarily run on earlier architectures than - the one you have chosen, e.g. a Pentium optimized kernel will run on - a PPro, but not necessarily on a i486. - - Here are the settings recommended for greatest speed: - - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI - 486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels - will run on a 386 class machine. - - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or - SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S. - - "586" for generic Pentium CPUs lacking the TSC - (time stamp counter) register. - - "Pentium-Classic" for the Intel Pentium. - - "Pentium-MMX" for the Intel Pentium MMX. - - "Pentium-Pro" for the Intel Pentium Pro. - - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron. - - "Pentium-III" for the Intel Pentium III or Coppermine Celeron. - - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron. - - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D). - - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird). - - "Crusoe" for the Transmeta Crusoe series. - - "Efficeon" for the Transmeta Efficeon series. - - "Winchip-C6" for original IDT Winchip. - - "Winchip-2" for IDT Winchip 2. - - "Winchip-2A" for IDT Winchips with 3dNow! capabilities. - - "GeodeGX1" for Geode GX1 (Cyrix MediaGX). - - "Geode GX/LX" For AMD Geode GX and LX processors. - - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3. - - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above). - - "VIA C7" for VIA C7. - - If you don't know what to do, choose "386". - -config M486 - bool "486" - help - Select this for a 486 series processor, either Intel or one of the - compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX, - DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or - U5S. - -config M586 - bool "586/K5/5x86/6x86/6x86MX" - help - Select this for an 586 or 686 series processor such as the AMD K5, - the Cyrix 5x86, 6x86 and 6x86MX. This choice does not - assume the RDTSC (Read Time Stamp Counter) instruction. - -config M586TSC - bool "Pentium-Classic" - help - Select this for a Pentium Classic processor with the RDTSC (Read - Time Stamp Counter) instruction for benchmarking. - -config M586MMX - bool "Pentium-MMX" - help - Select this for a Pentium with the MMX graphics/multimedia - extended instructions. - -config M686 - bool "Pentium-Pro" - help - Select this for Intel Pentium Pro chips. This enables the use of - Pentium Pro extended instructions, and disables the init-time guard - against the f00f bug found in earlier Pentiums. - -config MPENTIUMII - bool "Pentium-II/Celeron(pre-Coppermine)" - help - Select this for Intel chips based on the Pentium-II and - pre-Coppermine Celeron core. This option enables an unaligned - copy optimization, compiles the kernel with optimization flags - tailored for the chip, and applies any applicable Pentium Pro - optimizations. - -config MPENTIUMIII - bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon" - help - Select this for Intel chips based on the Pentium-III and - Celeron-Coppermine core. This option enables use of some - extended prefetch instructions in addition to the Pentium II - extensions. - -config MPENTIUMM - bool "Pentium M" - help - Select this for Intel Pentium M (not Pentium-4 M) - notebook chips. - -config MCORE2 - bool "Core 2/newer Xeon" - help - Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx) - CPUs. You can distinguish newer from older Xeons by the CPU family - in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo) - -config MPENTIUM4 - bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" - help - Select this for Intel Pentium 4 chips. This includes the - Pentium 4, Pentium D, P4-based Celeron and Xeon, and - Pentium-4 M (not Pentium M) chips. This option enables compile - flags optimized for the chip, uses the correct cache line size, and - applies any applicable optimizations. - - CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 ) - - Select this for: - Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename: - -Willamette - -Northwood - -Mobile Pentium 4 - -Mobile Pentium 4 M - -Extreme Edition (Gallatin) - -Prescott - -Prescott 2M - -Cedar Mill - -Presler - -Smithfiled - Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename: - -Foster - -Prestonia - -Gallatin - -Nocona - -Irwindale - -Cranford - -Potomac - -Paxville - -Dempsey - - -config MK6 - bool "K6/K6-II/K6-III" - help - Select this for an AMD K6-family processor. Enables use of - some extended instructions, and passes appropriate optimization - flags to GCC. - -config MK7 - bool "Athlon/Duron/K7" - help - Select this for an AMD Athlon K7-family processor. Enables use of - some extended instructions, and passes appropriate optimization - flags to GCC. - -config MK8 - bool "Opteron/Athlon64/Hammer/K8" - help - Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables - use of some extended instructions, and passes appropriate optimization - flags to GCC. - -config MCRUSOE - bool "Crusoe" - help - Select this for a Transmeta Crusoe processor. Treats the processor - like a 586 with TSC, and sets some GCC optimization flags (like a - Pentium Pro with no alignment requirements). - -config MEFFICEON - bool "Efficeon" - help - Select this for a Transmeta Efficeon processor. - -config MWINCHIPC6 - bool "Winchip-C6" - help - Select this for an IDT Winchip C6 chip. Linux and GCC - treat this chip as a 586TSC with some extended instructions - and alignment requirements. - -config MWINCHIP2 - bool "Winchip-2" - help - Select this for an IDT Winchip-2. Linux and GCC - treat this chip as a 586TSC with some extended instructions - and alignment requirements. - -config MWINCHIP3D - bool "Winchip-2A/Winchip-3" - help - Select this for an IDT Winchip-2A or 3. Linux and GCC - treat this chip as a 586TSC with some extended instructions - and alignment requirements. Also enable out of order memory - stores for this CPU, which can increase performance of some - operations. - -config MGEODEGX1 - bool "GeodeGX1" - help - Select this for a Geode GX1 (Cyrix MediaGX) chip. - -config MGEODE_LX - bool "Geode GX/LX" - help - Select this for AMD Geode GX and LX processors. - -config MCYRIXIII - bool "CyrixIII/VIA-C3" - help - Select this for a Cyrix III or C3 chip. Presently Linux and GCC - treat this chip as a generic 586. Whilst the CPU is 686 class, - it lacks the cmov extension which gcc assumes is present when - generating 686 code. - Note that Nehemiah (Model 9) and above will not boot with this - kernel due to them lacking the 3DNow! instructions used in earlier - incarnations of the CPU. - -config MVIAC3_2 - bool "VIA C3-2 (Nehemiah)" - help - Select this for a VIA C3 "Nehemiah". Selecting this enables usage - of SSE and tells gcc to treat the CPU as a 686. - Note, this kernel will not boot on older (pre model 9) C3s. - -config MVIAC7 - bool "VIA C7" - help - Select this for a VIA C7. Selecting this uses the correct cache - shift and tells gcc to treat the CPU as a 686. - -endchoice - -config X86_GENERIC - bool "Generic x86 support" - help - Instead of just including optimizations for the selected - x86 variant (e.g. PII, Crusoe or Athlon), include some more - generic optimizations as well. This will make the kernel - perform better on x86 CPUs other than that selected. - - This is really intended for distributors who need more - generic optimizations. - -endif - -# -# Define implied options from the CPU selection here -# -config X86_CMPXCHG - bool - depends on !M386 - default y - -config X86_L1_CACHE_SHIFT - int - default "7" if MPENTIUM4 || X86_GENERIC - default "4" if X86_ELAN || M486 || M386 || MGEODEGX1 - default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX - default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 - -config X86_XADD - bool - depends on !M386 - default y - -config RWSEM_GENERIC_SPINLOCK - bool - depends on !X86_XADD - default y - -config RWSEM_XCHGADD_ALGORITHM - bool - depends on X86_XADD - default y - -config ARCH_HAS_ILOG2_U32 - bool - default n - -config ARCH_HAS_ILOG2_U64 - bool - default n - -config GENERIC_CALIBRATE_DELAY - bool - default y - -config X86_PPRO_FENCE - bool - depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 - default y - -config X86_F00F_BUG - bool - depends on M586MMX || M586TSC || M586 || M486 || M386 - default y - -config X86_WP_WORKS_OK - bool - depends on !M386 - default y - -config X86_INVLPG - bool - depends on !M386 - default y - -config X86_BSWAP - bool - depends on !M386 - default y - -config X86_POPAD_OK - bool - depends on !M386 - default y - -config X86_ALIGNMENT_16 - bool - depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 - default y - -config X86_GOOD_APIC - bool - depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 - default y - -config X86_INTEL_USERCOPY - bool - depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 - default y - -config X86_USE_PPRO_CHECKSUM - bool - depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 - default y - -config X86_USE_3DNOW - bool - depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML - default y - -config X86_OOSTORE - bool - depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR - default y - -config X86_TSC - bool - depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ - default y - -# this should be set for all -march=.. options where the compiler -# generates cmov. -config X86_CMOV - bool - depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) - default y - -config X86_MINIMUM_CPU_FAMILY - int - default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK - default "3" - diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu new file mode 100644 index 000000000000..0e2adadf5905 --- /dev/null +++ b/arch/x86/Kconfig.cpu @@ -0,0 +1,372 @@ +# Put here option for CPU selection and depending optimization +if !X86_ELAN + +choice + prompt "Processor family" + default M686 + +config M386 + bool "386" + depends on !UML + ---help--- + This is the processor type of your CPU. This information is used for + optimizing purposes. In order to compile a kernel that can run on + all x86 CPU types (albeit not optimally fast), you can specify + "386" here. + + The kernel will not necessarily run on earlier architectures than + the one you have chosen, e.g. a Pentium optimized kernel will run on + a PPro, but not necessarily on a i486. + + Here are the settings recommended for greatest speed: + - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI + 486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels + will run on a 386 class machine. + - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or + SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S. + - "586" for generic Pentium CPUs lacking the TSC + (time stamp counter) register. + - "Pentium-Classic" for the Intel Pentium. + - "Pentium-MMX" for the Intel Pentium MMX. + - "Pentium-Pro" for the Intel Pentium Pro. + - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron. + - "Pentium-III" for the Intel Pentium III or Coppermine Celeron. + - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron. + - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D). + - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird). + - "Crusoe" for the Transmeta Crusoe series. + - "Efficeon" for the Transmeta Efficeon series. + - "Winchip-C6" for original IDT Winchip. + - "Winchip-2" for IDT Winchip 2. + - "Winchip-2A" for IDT Winchips with 3dNow! capabilities. + - "GeodeGX1" for Geode GX1 (Cyrix MediaGX). + - "Geode GX/LX" For AMD Geode GX and LX processors. + - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3. + - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above). + - "VIA C7" for VIA C7. + + If you don't know what to do, choose "386". + +config M486 + bool "486" + help + Select this for a 486 series processor, either Intel or one of the + compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX, + DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or + U5S. + +config M586 + bool "586/K5/5x86/6x86/6x86MX" + help + Select this for an 586 or 686 series processor such as the AMD K5, + the Cyrix 5x86, 6x86 and 6x86MX. This choice does not + assume the RDTSC (Read Time Stamp Counter) instruction. + +config M586TSC + bool "Pentium-Classic" + help + Select this for a Pentium Classic processor with the RDTSC (Read + Time Stamp Counter) instruction for benchmarking. + +config M586MMX + bool "Pentium-MMX" + help + Select this for a Pentium with the MMX graphics/multimedia + extended instructions. + +config M686 + bool "Pentium-Pro" + help + Select this for Intel Pentium Pro chips. This enables the use of + Pentium Pro extended instructions, and disables the init-time guard + against the f00f bug found in earlier Pentiums. + +config MPENTIUMII + bool "Pentium-II/Celeron(pre-Coppermine)" + help + Select this for Intel chips based on the Pentium-II and + pre-Coppermine Celeron core. This option enables an unaligned + copy optimization, compiles the kernel with optimization flags + tailored for the chip, and applies any applicable Pentium Pro + optimizations. + +config MPENTIUMIII + bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon" + help + Select this for Intel chips based on the Pentium-III and + Celeron-Coppermine core. This option enables use of some + extended prefetch instructions in addition to the Pentium II + extensions. + +config MPENTIUMM + bool "Pentium M" + help + Select this for Intel Pentium M (not Pentium-4 M) + notebook chips. + +config MCORE2 + bool "Core 2/newer Xeon" + help + Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx) + CPUs. You can distinguish newer from older Xeons by the CPU family + in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo) + +config MPENTIUM4 + bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" + help + Select this for Intel Pentium 4 chips. This includes the + Pentium 4, Pentium D, P4-based Celeron and Xeon, and + Pentium-4 M (not Pentium M) chips. This option enables compile + flags optimized for the chip, uses the correct cache line size, and + applies any applicable optimizations. + + CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 ) + + Select this for: + Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename: + -Willamette + -Northwood + -Mobile Pentium 4 + -Mobile Pentium 4 M + -Extreme Edition (Gallatin) + -Prescott + -Prescott 2M + -Cedar Mill + -Presler + -Smithfiled + Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename: + -Foster + -Prestonia + -Gallatin + -Nocona + -Irwindale + -Cranford + -Potomac + -Paxville + -Dempsey + + +config MK6 + bool "K6/K6-II/K6-III" + help + Select this for an AMD K6-family processor. Enables use of + some extended instructions, and passes appropriate optimization + flags to GCC. + +config MK7 + bool "Athlon/Duron/K7" + help + Select this for an AMD Athlon K7-family processor. Enables use of + some extended instructions, and passes appropriate optimization + flags to GCC. + +config MK8 + bool "Opteron/Athlon64/Hammer/K8" + help + Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables + use of some extended instructions, and passes appropriate optimization + flags to GCC. + +config MCRUSOE + bool "Crusoe" + help + Select this for a Transmeta Crusoe processor. Treats the processor + like a 586 with TSC, and sets some GCC optimization flags (like a + Pentium Pro with no alignment requirements). + +config MEFFICEON + bool "Efficeon" + help + Select this for a Transmeta Efficeon processor. + +config MWINCHIPC6 + bool "Winchip-C6" + help + Select this for an IDT Winchip C6 chip. Linux and GCC + treat this chip as a 586TSC with some extended instructions + and alignment requirements. + +config MWINCHIP2 + bool "Winchip-2" + help + Select this for an IDT Winchip-2. Linux and GCC + treat this chip as a 586TSC with some extended instructions + and alignment requirements. + +config MWINCHIP3D + bool "Winchip-2A/Winchip-3" + help + Select this for an IDT Winchip-2A or 3. Linux and GCC + treat this chip as a 586TSC with some extended instructions + and alignment requirements. Also enable out of order memory + stores for this CPU, which can increase performance of some + operations. + +config MGEODEGX1 + bool "GeodeGX1" + help + Select this for a Geode GX1 (Cyrix MediaGX) chip. + +config MGEODE_LX + bool "Geode GX/LX" + help + Select this for AMD Geode GX and LX processors. + +config MCYRIXIII + bool "CyrixIII/VIA-C3" + help + Select this for a Cyrix III or C3 chip. Presently Linux and GCC + treat this chip as a generic 586. Whilst the CPU is 686 class, + it lacks the cmov extension which gcc assumes is present when + generating 686 code. + Note that Nehemiah (Model 9) and above will not boot with this + kernel due to them lacking the 3DNow! instructions used in earlier + incarnations of the CPU. + +config MVIAC3_2 + bool "VIA C3-2 (Nehemiah)" + help + Select this for a VIA C3 "Nehemiah". Selecting this enables usage + of SSE and tells gcc to treat the CPU as a 686. + Note, this kernel will not boot on older (pre model 9) C3s. + +config MVIAC7 + bool "VIA C7" + help + Select this for a VIA C7. Selecting this uses the correct cache + shift and tells gcc to treat the CPU as a 686. + +endchoice + +config X86_GENERIC + bool "Generic x86 support" + help + Instead of just including optimizations for the selected + x86 variant (e.g. PII, Crusoe or Athlon), include some more + generic optimizations as well. This will make the kernel + perform better on x86 CPUs other than that selected. + + This is really intended for distributors who need more + generic optimizations. + +endif + +# +# Define implied options from the CPU selection here +# +config X86_CMPXCHG + bool + depends on !M386 + default y + +config X86_L1_CACHE_SHIFT + int + default "7" if MPENTIUM4 || X86_GENERIC + default "4" if X86_ELAN || M486 || M386 || MGEODEGX1 + default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX + default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 + +config X86_XADD + bool + depends on !M386 + default y + +config RWSEM_GENERIC_SPINLOCK + bool + depends on !X86_XADD + default y + +config RWSEM_XCHGADD_ALGORITHM + bool + depends on X86_XADD + default y + +config ARCH_HAS_ILOG2_U32 + bool + default n + +config ARCH_HAS_ILOG2_U64 + bool + default n + +config GENERIC_CALIBRATE_DELAY + bool + default y + +config X86_PPRO_FENCE + bool + depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 + default y + +config X86_F00F_BUG + bool + depends on M586MMX || M586TSC || M586 || M486 || M386 + default y + +config X86_WP_WORKS_OK + bool + depends on !M386 + default y + +config X86_INVLPG + bool + depends on !M386 + default y + +config X86_BSWAP + bool + depends on !M386 + default y + +config X86_POPAD_OK + bool + depends on !M386 + default y + +config X86_ALIGNMENT_16 + bool + depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 + default y + +config X86_GOOD_APIC + bool + depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 + default y + +config X86_INTEL_USERCOPY + bool + depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 + default y + +config X86_USE_PPRO_CHECKSUM + bool + depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 + default y + +config X86_USE_3DNOW + bool + depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML + default y + +config X86_OOSTORE + bool + depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR + default y + +config X86_TSC + bool + depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ + default y + +# this should be set for all -march=.. options where the compiler +# generates cmov. +config X86_CMOV + bool + depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) + default y + +config X86_MINIMUM_CPU_FAMILY + int + default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK + default "3" + diff --git a/arch/x86/Kconfig.i386 b/arch/x86/Kconfig.i386 new file mode 100644 index 000000000000..7331efe891a7 --- /dev/null +++ b/arch/x86/Kconfig.i386 @@ -0,0 +1,1321 @@ +# +# For a description of the syntax of this configuration file, +# see Documentation/kbuild/kconfig-language.txt. +# + +mainmenu "Linux Kernel Configuration" + +config X86_32 + bool + default y + help + This is Linux's home port. Linux was originally native to the Intel + 386, and runs on all the later x86 processors including the Intel + 486, 586, Pentiums, and various instruction-set-compatible chips by + AMD, Cyrix, and others. + +config GENERIC_TIME + bool + default y + +config GENERIC_CMOS_UPDATE + bool + default y + +config CLOCKSOURCE_WATCHDOG + bool + default y + +config GENERIC_CLOCKEVENTS + bool + default y + +config GENERIC_CLOCKEVENTS_BROADCAST + bool + default y + depends on X86_LOCAL_APIC + +config LOCKDEP_SUPPORT + bool + default y + +config STACKTRACE_SUPPORT + bool + default y + +config SEMAPHORE_SLEEPERS + bool + default y + +config X86 + bool + default y + +config MMU + bool + default y + +config ZONE_DMA + bool + default y + +config QUICKLIST + bool + default y + +config SBUS + bool + +config GENERIC_ISA_DMA + bool + default y + +config GENERIC_IOMAP + bool + default y + +config GENERIC_BUG + bool + default y + depends on BUG + +config GENERIC_HWEIGHT + bool + default y + +config ARCH_MAY_HAVE_PC_FDC + bool + default y + +config DMI + bool + default y + +source "init/Kconfig" + +menu "Processor type and features" + +source "kernel/time/Kconfig" + +config SMP + bool "Symmetric multi-processing support" + ---help--- + This enables support for systems with more than one CPU. If you have + a system with only one CPU, like most personal computers, say N. If + you have a system with more than one CPU, say Y. + + If you say N here, the kernel will run on single and multiprocessor + machines, but will use only one CPU of a multiprocessor machine. If + you say Y here, the kernel will run on many, but not all, + singleprocessor machines. On a singleprocessor machine, the kernel + will run faster if you say N here. + + Note that if you say Y here and choose architecture "586" or + "Pentium" under "Processor family", the kernel will not work on 486 + architectures. Similarly, multiprocessor kernels for the "PPro" + architecture may not work on all Pentium based boards. + + People using multiprocessor machines who say Y here should also say + Y to "Enhanced Real Time Clock Support", below. The "Advanced Power + Management" code will be disabled if you say Y here. + + See also the , + , + and the SMP-HOWTO available at + . + + If you don't know what to do here, say N. + +choice + prompt "Subarchitecture Type" + default X86_PC + +config X86_PC + bool "PC-compatible" + help + Choose this option if your computer is a standard PC or compatible. + +config X86_ELAN + bool "AMD Elan" + help + Select this for an AMD Elan processor. + + Do not use this option for K6/Athlon/Opteron processors! + + If unsure, choose "PC-compatible" instead. + +config X86_VOYAGER + bool "Voyager (NCR)" + select SMP if !BROKEN + help + Voyager is an MCA-based 32-way capable SMP architecture proprietary + to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based. + + *** WARNING *** + + If you do not specifically know you have a Voyager based machine, + say N here, otherwise the kernel you build will not be bootable. + +config X86_NUMAQ + bool "NUMAQ (IBM/Sequent)" + select SMP + select NUMA + help + This option is used for getting Linux to run on a (IBM/Sequent) NUMA + multiquad box. This changes the way that processors are bootstrapped, + and uses Clustered Logical APIC addressing mode instead of Flat Logical. + You will need a new lynxer.elf file to flash your firmware with - send + email to . + +config X86_SUMMIT + bool "Summit/EXA (IBM x440)" + depends on SMP + help + This option is needed for IBM systems that use the Summit/EXA chipset. + In particular, it is needed for the x440. + + If you don't have one of these computers, you should say N here. + If you want to build a NUMA kernel, you must select ACPI. + +config X86_BIGSMP + bool "Support for other sub-arch SMP systems with more than 8 CPUs" + depends on SMP + help + This option is needed for the systems that have more than 8 CPUs + and if the system is not of any sub-arch type above. + + If you don't have such a system, you should say N here. + +config X86_VISWS + bool "SGI 320/540 (Visual Workstation)" + help + The SGI Visual Workstation series is an IA32-based workstation + based on SGI systems chips with some legacy PC hardware attached. + + Say Y here to create a kernel to run on the SGI 320 or 540. + + A kernel compiled for the Visual Workstation will not run on PCs + and vice versa. See for details. + +config X86_GENERICARCH + bool "Generic architecture (Summit, bigsmp, ES7000, default)" + help + This option compiles in the Summit, bigsmp, ES7000, default subarchitectures. + It is intended for a generic binary kernel. + If you want a NUMA kernel, select ACPI. We need SRAT for NUMA. + +config X86_ES7000 + bool "Support for Unisys ES7000 IA32 series" + depends on SMP + help + Support for Unisys ES7000 systems. Say 'Y' here if this kernel is + supposed to run on an IA32-based Unisys ES7000 system. + Only choose this option if you have such a system, otherwise you + should say N here. + +endchoice + +config SCHED_NO_NO_OMIT_FRAME_POINTER + bool "Single-depth WCHAN output" + default y + help + Calculate simpler /proc//wchan values. If this option + is disabled then wchan values will recurse back to the + caller function. This provides more accurate wchan values, + at the expense of slightly more scheduling overhead. + + If in doubt, say "Y". + +config PARAVIRT + bool + depends on !(X86_VISWS || X86_VOYAGER) + help + This changes the kernel so it can modify itself when it is run + under a hypervisor, potentially improving performance significantly + over full virtualization. However, when run without a hypervisor + the kernel is theoretically slower and slightly larger. + +menuconfig PARAVIRT_GUEST + bool "Paravirtualized guest support" + help + Say Y here to get to see options related to running Linux under + various hypervisors. This option alone does not add any kernel code. + + If you say N, all options in this submenu will be skipped and disabled. + +if PARAVIRT_GUEST + +source "arch/x86/xen/Kconfig" + +config VMI + bool "VMI Guest support" + select PARAVIRT + depends on !(X86_VISWS || X86_VOYAGER) + help + VMI provides a paravirtualized interface to the VMware ESX server + (it could be used by other hypervisors in theory too, but is not + at the moment), by linking the kernel to a GPL-ed ROM module + provided by the hypervisor. + +source "arch/x86/lguest/Kconfig" + +endif + +config ACPI_SRAT + bool + default y + depends on ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH) + select ACPI_NUMA + +config HAVE_ARCH_PARSE_SRAT + bool + default y + depends on ACPI_SRAT + +config X86_SUMMIT_NUMA + bool + default y + depends on NUMA && (X86_SUMMIT || X86_GENERICARCH) + +config X86_CYCLONE_TIMER + bool + default y + depends on X86_SUMMIT || X86_GENERICARCH + +config ES7000_CLUSTERED_APIC + bool + default y + depends on SMP && X86_ES7000 && MPENTIUMIII + +source "arch/x86/Kconfig.cpu" + +config HPET_TIMER + bool "HPET Timer Support" + help + This enables the use of the HPET for the kernel's internal timer. + HPET is the next generation timer replacing legacy 8254s. + You can safely choose Y here. However, HPET will only be + activated if the platform and the BIOS support this feature. + Otherwise the 8254 will be used for timing services. + + Choose N to continue using the legacy 8254 timer. + +config HPET_EMULATE_RTC + bool + depends on HPET_TIMER && RTC=y + default y + +config NR_CPUS + int "Maximum number of CPUs (2-255)" + range 2 255 + depends on SMP + default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000 + default "8" + help + This allows you to specify the maximum number of CPUs which this + kernel will support. The maximum supported value is 255 and the + minimum value which makes sense is 2. + + This is purely to save memory - each supported CPU adds + approximately eight kilobytes to the kernel image. + +config SCHED_SMT + bool "SMT (Hyperthreading) scheduler support" + depends on X86_HT + help + SMT scheduler support improves the CPU scheduler's decision making + when dealing with Intel Pentium 4 chips with HyperThreading at a + cost of slightly increased overhead in some places. If unsure say + N here. + +config SCHED_MC + bool "Multi-core scheduler support" + depends on X86_HT + default y + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. If unsure say N here. + +source "kernel/Kconfig.preempt" + +config X86_UP_APIC + bool "Local APIC support on uniprocessors" + depends on !SMP && !(X86_VISWS || X86_VOYAGER || X86_GENERICARCH) + help + A local APIC (Advanced Programmable Interrupt Controller) is an + integrated interrupt controller in the CPU. If you have a single-CPU + system which has a processor with a local APIC, you can say Y here to + enable and use it. If you say Y here even though your machine doesn't + have a local APIC, then the kernel will still run with no slowdown at + all. The local APIC supports CPU-generated self-interrupts (timer, + performance counters), and the NMI watchdog which detects hard + lockups. + +config X86_UP_IOAPIC + bool "IO-APIC support on uniprocessors" + depends on X86_UP_APIC + help + An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an + SMP-capable replacement for PC-style interrupt controllers. Most + SMP systems and many recent uniprocessor systems have one. + + If you have a single-CPU system with an IO-APIC, you can say Y here + to use it. If you say Y here even though your machine doesn't have + an IO-APIC, then the kernel will still run with no slowdown at all. + +config X86_LOCAL_APIC + bool + depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH + default y + +config X86_IO_APIC + bool + depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH + default y + +config X86_VISWS_APIC + bool + depends on X86_VISWS + default y + +config X86_MCE + bool "Machine Check Exception" + depends on !X86_VOYAGER + ---help--- + Machine Check Exception support allows the processor to notify the + kernel if it detects a problem (e.g. overheating, component failure). + The action the kernel takes depends on the severity of the problem, + ranging from a warning message on the console, to halting the machine. + Your processor must be a Pentium or newer to support this - check the + flags in /proc/cpuinfo for mce. Note that some older Pentium systems + have a design flaw which leads to false MCE events - hence MCE is + disabled on all P5 processors, unless explicitly enabled with "mce" + as a boot argument. Similarly, if MCE is built in and creates a + problem on some new non-standard machine, you can boot with "nomce" + to disable it. MCE support simply ignores non-MCE processors like + the 386 and 486, so nearly everyone can say Y here. + +config X86_MCE_NONFATAL + tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4" + depends on X86_MCE + help + Enabling this feature starts a timer that triggers every 5 seconds which + will look at the machine check registers to see if anything happened. + Non-fatal problems automatically get corrected (but still logged). + Disable this if you don't want to see these messages. + Seeing the messages this option prints out may be indicative of dying + or out-of-spec (ie, overclocked) hardware. + This option only does something on certain CPUs. + (AMD Athlon/Duron and Intel Pentium 4) + +config X86_MCE_P4THERMAL + bool "check for P4 thermal throttling interrupt." + depends on X86_MCE && (X86_UP_APIC || SMP) && !X86_VISWS + help + Enabling this feature will cause a message to be printed when the P4 + enters thermal throttling. + +config VM86 + default y + bool "Enable VM86 support" if EMBEDDED + help + This option is required by programs like DOSEMU to run 16-bit legacy + code on X86 processors. It also may be needed by software like + XFree86 to initialize some video cards via BIOS. Disabling this + option saves about 6k. + +config TOSHIBA + tristate "Toshiba Laptop support" + ---help--- + This adds a driver to safely access the System Management Mode of + the CPU on Toshiba portables with a genuine Toshiba BIOS. It does + not work on models with a Phoenix BIOS. The System Management Mode + is used to set the BIOS and power saving options on Toshiba portables. + + For information on utilities to make use of this driver see the + Toshiba Linux utilities web site at: + . + + Say Y if you intend to run this kernel on a Toshiba portable. + Say N otherwise. + +config I8K + tristate "Dell laptop support" + ---help--- + This adds a driver to safely access the System Management Mode + of the CPU on the Dell Inspiron 8000. The System Management Mode + is used to read cpu temperature and cooling fan status and to + control the fans on the I8K portables. + + This driver has been tested only on the Inspiron 8000 but it may + also work with other Dell laptops. You can force loading on other + models by passing the parameter `force=1' to the module. Use at + your own risk. + + For information on utilities to make use of this driver see the + I8K Linux utilities web site at: + + + Say Y if you intend to run this kernel on a Dell Inspiron 8000. + Say N otherwise. + +config X86_REBOOTFIXUPS + bool "Enable X86 board specific fixups for reboot" + depends on X86 + default n + ---help--- + This enables chipset and/or board specific fixups to be done + in order to get reboot to work correctly. This is only needed on + some combinations of hardware and BIOS. The symptom, for which + this config is intended, is when reboot ends with a stalled/hung + system. + + Currently, the only fixup is for the Geode machines using + CS5530A and CS5536 chipsets. + + Say Y if you want to enable the fixup. Currently, it's safe to + enable this option even if you don't need it. + Say N otherwise. + +config MICROCODE + tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support" + select FW_LOADER + ---help--- + If you say Y here, you will be able to update the microcode on + Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II, + Pentium III, Pentium 4, Xeon etc. You will obviously need the + actual microcode binary data itself which is not shipped with the + Linux kernel. + + For latest news and information on obtaining all the required + ingredients for this driver, check: + . + + To compile this driver as a module, choose M here: the + module will be called microcode. + +config MICROCODE_OLD_INTERFACE + bool + depends on MICROCODE + default y + +config X86_MSR + tristate "/dev/cpu/*/msr - Model-specific register support" + help + This device gives privileged processes access to the x86 + Model-Specific Registers (MSRs). It is a character device with + major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. + MSR accesses are directed to a specific CPU on multi-processor + systems. + +config X86_CPUID + tristate "/dev/cpu/*/cpuid - CPU information support" + help + This device gives processes access to the x86 CPUID instruction to + be executed on a specific processor. It is a character device + with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to + /dev/cpu/31/cpuid. + +source "drivers/firmware/Kconfig" + +choice + prompt "High Memory Support" + default HIGHMEM4G if !X86_NUMAQ + default HIGHMEM64G if X86_NUMAQ + +config NOHIGHMEM + bool "off" + depends on !X86_NUMAQ + ---help--- + Linux can use up to 64 Gigabytes of physical memory on x86 systems. + However, the address space of 32-bit x86 processors is only 4 + Gigabytes large. That means that, if you have a large amount of + physical memory, not all of it can be "permanently mapped" by the + kernel. The physical memory that's not permanently mapped is called + "high memory". + + If you are compiling a kernel which will never run on a machine with + more than 1 Gigabyte total physical RAM, answer "off" here (default + choice and suitable for most users). This will result in a "3GB/1GB" + split: 3GB are mapped so that each process sees a 3GB virtual memory + space and the remaining part of the 4GB virtual memory space is used + by the kernel to permanently map as much physical memory as + possible. + + If the machine has between 1 and 4 Gigabytes physical RAM, then + answer "4GB" here. + + If more than 4 Gigabytes is used then answer "64GB" here. This + selection turns Intel PAE (Physical Address Extension) mode on. + PAE implements 3-level paging on IA32 processors. PAE is fully + supported by Linux, PAE mode is implemented on all recent Intel + processors (Pentium Pro and better). NOTE: If you say "64GB" here, + then the kernel will not boot on CPUs that don't support PAE! + + The actual amount of total physical memory will either be + auto detected or can be forced by using a kernel command line option + such as "mem=256M". (Try "man bootparam" or see the documentation of + your boot loader (lilo or loadlin) about how to pass options to the + kernel at boot time.) + + If unsure, say "off". + +config HIGHMEM4G + bool "4GB" + depends on !X86_NUMAQ + help + Select this if you have a 32-bit processor and between 1 and 4 + gigabytes of physical RAM. + +config HIGHMEM64G + bool "64GB" + depends on !M386 && !M486 + select X86_PAE + help + Select this if you have a 32-bit processor and more than 4 + gigabytes of physical RAM. + +endchoice + +choice + depends on EXPERIMENTAL + prompt "Memory split" if EMBEDDED + default VMSPLIT_3G + help + Select the desired split between kernel and user memory. + + If the address range available to the kernel is less than the + physical memory installed, the remaining memory will be available + as "high memory". Accessing high memory is a little more costly + than low memory, as it needs to be mapped into the kernel first. + Note that increasing the kernel address space limits the range + available to user programs, making the address space there + tighter. Selecting anything other than the default 3G/1G split + will also likely make your kernel incompatible with binary-only + kernel modules. + + If you are not absolutely sure what you are doing, leave this + option alone! + + config VMSPLIT_3G + bool "3G/1G user/kernel split" + config VMSPLIT_3G_OPT + depends on !X86_PAE + bool "3G/1G user/kernel split (for full 1G low memory)" + config VMSPLIT_2G + bool "2G/2G user/kernel split" + config VMSPLIT_2G_OPT + depends on !X86_PAE + bool "2G/2G user/kernel split (for full 2G low memory)" + config VMSPLIT_1G + bool "1G/3G user/kernel split" +endchoice + +config PAGE_OFFSET + hex + default 0xB0000000 if VMSPLIT_3G_OPT + default 0x80000000 if VMSPLIT_2G + default 0x78000000 if VMSPLIT_2G_OPT + default 0x40000000 if VMSPLIT_1G + default 0xC0000000 + +config HIGHMEM + bool + depends on HIGHMEM64G || HIGHMEM4G + default y + +config X86_PAE + bool "PAE (Physical Address Extension) Support" + default n + depends on !HIGHMEM4G + select RESOURCES_64BIT + help + PAE is required for NX support, and furthermore enables + larger swapspace support for non-overcommit purposes. It + has the cost of more pagetable lookup overhead, and also + consumes more pagetable space per process. + +# Common NUMA Features +config NUMA + bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)" + depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL + default n if X86_PC + default y if (X86_NUMAQ || X86_SUMMIT) + help + NUMA support for i386. This is currently highly experimental + and should be only used for kernel development. It might also + cause boot failures. + +comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI" + depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI) + +config NODES_SHIFT + int + default "4" if X86_NUMAQ + default "3" + depends on NEED_MULTIPLE_NODES + +config HAVE_ARCH_BOOTMEM_NODE + bool + depends on NUMA + default y + +config ARCH_HAVE_MEMORY_PRESENT + bool + depends on DISCONTIGMEM + default y + +config NEED_NODE_MEMMAP_SIZE + bool + depends on DISCONTIGMEM || SPARSEMEM + default y + +config HAVE_ARCH_ALLOC_REMAP + bool + depends on NUMA + default y + +config ARCH_FLATMEM_ENABLE + def_bool y + depends on (ARCH_SELECT_MEMORY_MODEL && X86_PC) + +config ARCH_DISCONTIGMEM_ENABLE + def_bool y + depends on NUMA + +config ARCH_DISCONTIGMEM_DEFAULT + def_bool y + depends on NUMA + +config ARCH_SPARSEMEM_ENABLE + def_bool y + depends on (NUMA || (X86_PC && EXPERIMENTAL)) + select SPARSEMEM_STATIC + +config ARCH_SELECT_MEMORY_MODEL + def_bool y + depends on ARCH_SPARSEMEM_ENABLE + +config ARCH_POPULATES_NODE_MAP + def_bool y + +source "mm/Kconfig" + +config HIGHPTE + bool "Allocate 3rd-level pagetables from highmem" + depends on HIGHMEM4G || HIGHMEM64G + help + The VM uses one page table entry for each page of physical memory. + For systems with a lot of RAM, this can be wasteful of precious + low memory. Setting this option will put user-space page table + entries in high memory. + +config MATH_EMULATION + bool "Math emulation" + ---help--- + Linux can emulate a math coprocessor (used for floating point + operations) if you don't have one. 486DX and Pentium processors have + a math coprocessor built in, 486SX and 386 do not, unless you added + a 487DX or 387, respectively. (The messages during boot time can + give you some hints here ["man dmesg"].) Everyone needs either a + coprocessor or this emulation. + + If you don't have a math coprocessor, you need to say Y here; if you + say Y here even though you have a coprocessor, the coprocessor will + be used nevertheless. (This behavior can be changed with the kernel + command line option "no387", which comes handy if your coprocessor + is broken. Try "man bootparam" or see the documentation of your boot + loader (lilo or loadlin) about how to pass options to the kernel at + boot time.) This means that it is a good idea to say Y here if you + intend to use this kernel on different machines. + + More information about the internals of the Linux math coprocessor + emulation can be found in . + + If you are not sure, say Y; apart from resulting in a 66 KB bigger + kernel, it won't hurt. + +config MTRR + bool "MTRR (Memory Type Range Register) support" + ---help--- + On Intel P6 family processors (Pentium Pro, Pentium II and later) + the Memory Type Range Registers (MTRRs) may be used to control + processor access to memory ranges. This is most useful if you have + a video (VGA) card on a PCI or AGP bus. Enabling write-combining + allows bus write transfers to be combined into a larger transfer + before bursting over the PCI/AGP bus. This can increase performance + of image write operations 2.5 times or more. Saying Y here creates a + /proc/mtrr file which may be used to manipulate your processor's + MTRRs. Typically the X server should use this. + + This code has a reasonably generic interface so that similar + control registers on other processors can be easily supported + as well: + + The Cyrix 6x86, 6x86MX and M II processors have Address Range + Registers (ARRs) which provide a similar functionality to MTRRs. For + these, the ARRs are used to emulate the MTRRs. + The AMD K6-2 (stepping 8 and above) and K6-3 processors have two + MTRRs. The Centaur C6 (WinChip) has 8 MCRs, allowing + write-combining. All of these processors are supported by this code + and it makes sense to say Y here if you have one of them. + + Saying Y here also fixes a problem with buggy SMP BIOSes which only + set the MTRRs for the boot CPU and not for the secondary CPUs. This + can lead to all sorts of problems, so it's good to say Y here. + + You can safely say Y even if your machine doesn't have MTRRs, you'll + just add about 9 KB to your kernel. + + See for more information. + +config EFI + bool "Boot from EFI support" + depends on ACPI + default n + ---help--- + This enables the kernel to boot on EFI platforms using + system configuration information passed to it from the firmware. + This also enables the kernel to use any EFI runtime services that are + available (such as the EFI variable services). + + This option is only useful on systems that have EFI firmware + and will result in a kernel image that is ~8k larger. In addition, + you must use the latest ELILO loader available at + in order to take advantage of + kernel initialization using EFI information (neither GRUB nor LILO know + anything about EFI). However, even with this option, the resultant + kernel should continue to boot on existing non-EFI platforms. + +config IRQBALANCE + bool "Enable kernel irq balancing" + depends on SMP && X86_IO_APIC + default y + help + The default yes will allow the kernel to do irq load balancing. + Saying no will keep the kernel from doing irq load balancing. + +# turning this on wastes a bunch of space. +# Summit needs it only when NUMA is on +config BOOT_IOREMAP + bool + depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI)) + default y + +config SECCOMP + bool "Enable seccomp to safely compute untrusted bytecode" + depends on PROC_FS + default y + help + This kernel feature is useful for number crunching applications + that may need to compute untrusted bytecode during their + execution. By using pipes or other transports made available to + the process as file descriptors supporting the read/write + syscalls, it's possible to isolate those applications in + their own address space using seccomp. Once seccomp is + enabled via /proc//seccomp, it cannot be disabled + and the task is only allowed to execute a few safe syscalls + defined by each seccomp mode. + + If unsure, say Y. Only embedded should say N here. + +source kernel/Kconfig.hz + +config KEXEC + bool "kexec system call" + help + kexec is a system call that implements the ability to shutdown your + current kernel, and to start another kernel. It is like a reboot + but it is independent of the system firmware. And like a reboot + you can start any kernel with it, not just Linux. + + The name comes from the similarity to the exec system call. + + It is an ongoing process to be certain the hardware in a machine + is properly shutdown, so do not be surprised if this code does not + initially work for you. It may help to enable device hotplugging + support. As of this writing the exact hardware interface is + strongly in flux, so no good recommendation can be made. + +config CRASH_DUMP + bool "kernel crash dumps (EXPERIMENTAL)" + depends on EXPERIMENTAL + depends on HIGHMEM + help + Generate crash dump after being started by kexec. + This should be normally only set in special crash dump kernels + which are loaded in the main kernel with kexec-tools into + a specially reserved region and then later executed after + a crash by kdump/kexec. The crash dump kernel must be compiled + to a memory address not used by the main kernel or BIOS using + PHYSICAL_START, or it must be built as a relocatable image + (CONFIG_RELOCATABLE=y). + For more details see Documentation/kdump/kdump.txt + +config PHYSICAL_START + hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) + default "0x1000000" if X86_NUMAQ + default "0x100000" + help + This gives the physical address where the kernel is loaded. + + If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then + bzImage will decompress itself to above physical address and + run from there. Otherwise, bzImage will run from the address where + it has been loaded by the boot loader and will ignore above physical + address. + + In normal kdump cases one does not have to set/change this option + as now bzImage can be compiled as a completely relocatable image + (CONFIG_RELOCATABLE=y) and be used to load and run from a different + address. This option is mainly useful for the folks who don't want + to use a bzImage for capturing the crash dump and want to use a + vmlinux instead. vmlinux is not relocatable hence a kernel needs + to be specifically compiled to run from a specific memory area + (normally a reserved region) and this option comes handy. + + So if you are using bzImage for capturing the crash dump, leave + the value here unchanged to 0x100000 and set CONFIG_RELOCATABLE=y. + Otherwise if you plan to use vmlinux for capturing the crash dump + change this value to start of the reserved region (Typically 16MB + 0x1000000). In other words, it can be set based on the "X" value as + specified in the "crashkernel=YM@XM" command line boot parameter + passed to the panic-ed kernel. Typically this parameter is set as + crashkernel=64M@16M. Please take a look at + Documentation/kdump/kdump.txt for more details about crash dumps. + + Usage of bzImage for capturing the crash dump is recommended as + one does not have to build two kernels. Same kernel can be used + as production kernel and capture kernel. Above option should have + gone away after relocatable bzImage support is introduced. But it + is present because there are users out there who continue to use + vmlinux for dump capture. This option should go away down the + line. + + Don't change this unless you know what you are doing. + +config RELOCATABLE + bool "Build a relocatable kernel (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + This builds a kernel image that retains relocation information + so it can be loaded someplace besides the default 1MB. + The relocations tend to make the kernel binary about 10% larger, + but are discarded at runtime. + + One use is for the kexec on panic case where the recovery kernel + must live at a different physical address than the primary + kernel. + +config PHYSICAL_ALIGN + hex "Alignment value to which kernel should be aligned" + default "0x100000" + range 0x2000 0x400000 + help + This value puts the alignment restrictions on physical address + where kernel is loaded and run from. Kernel is compiled for an + address which meets above alignment restriction. + + If bootloader loads the kernel at a non-aligned address and + CONFIG_RELOCATABLE is set, kernel will move itself to nearest + address aligned to above value and run from there. + + If bootloader loads the kernel at a non-aligned address and + CONFIG_RELOCATABLE is not set, kernel will ignore the run time + load address and decompress itself to the address it has been + compiled for and run from there. The address for which kernel is + compiled already meets above alignment restrictions. Hence the + end result is that kernel runs from a physical address meeting + above alignment restrictions. + + Don't change this unless you know what you are doing. + +config HOTPLUG_CPU + bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)" + depends on SMP && HOTPLUG && EXPERIMENTAL && !X86_VOYAGER + ---help--- + Say Y here to experiment with turning CPUs off and on, and to + enable suspend on SMP systems. CPUs can be controlled through + /sys/devices/system/cpu. + +config COMPAT_VDSO + bool "Compat VDSO support" + default y + help + Map the VDSO to the predictable old-style address too. + ---help--- + Say N here if you are running a sufficiently recent glibc + version (2.3.3 or later), to remove the high-mapped + VDSO mapping and to exclusively use the randomized VDSO. + + If unsure, say Y. + +endmenu + +config ARCH_ENABLE_MEMORY_HOTPLUG + def_bool y + depends on HIGHMEM + +menu "Power management options (ACPI, APM)" + depends on !X86_VOYAGER + +source kernel/power/Kconfig + +source "drivers/acpi/Kconfig" + +menuconfig APM + tristate "APM (Advanced Power Management) BIOS support" + depends on PM_SLEEP && !X86_VISWS + ---help--- + APM is a BIOS specification for saving power using several different + techniques. This is mostly useful for battery powered laptops with + APM compliant BIOSes. If you say Y here, the system time will be + reset after a RESUME operation, the /proc/apm device will provide + battery status information, and user-space programs will receive + notification of APM "events" (e.g. battery status change). + + If you select "Y" here, you can disable actual use of the APM + BIOS by passing the "apm=off" option to the kernel at boot time. + + Note that the APM support is almost completely disabled for + machines with more than one CPU. + + In order to use APM, you will need supporting software. For location + and more information, read and the + Battery Powered Linux mini-HOWTO, available from + . + + This driver does not spin down disk drives (see the hdparm(8) + manpage ("man 8 hdparm") for that), and it doesn't turn off + VESA-compliant "green" monitors. + + This driver does not support the TI 4000M TravelMate and the ACER + 486/DX4/75 because they don't have compliant BIOSes. Many "green" + desktop machines also don't have compliant BIOSes, and this driver + may cause those machines to panic during the boot phase. + + Generally, if you don't have a battery in your machine, there isn't + much point in using this driver and you should say N. If you get + random kernel OOPSes or reboots that don't seem to be related to + anything, try disabling/enabling this option (or disabling/enabling + APM in your BIOS). + + Some other things you should try when experiencing seemingly random, + "weird" problems: + + 1) make sure that you have enough swap space and that it is + enabled. + 2) pass the "no-hlt" option to the kernel + 3) switch on floating point emulation in the kernel and pass + the "no387" option to the kernel + 4) pass the "floppy=nodma" option to the kernel + 5) pass the "mem=4M" option to the kernel (thereby disabling + all but the first 4 MB of RAM) + 6) make sure that the CPU is not over clocked. + 7) read the sig11 FAQ at + 8) disable the cache from your BIOS settings + 9) install a fan for the video card or exchange video RAM + 10) install a better fan for the CPU + 11) exchange RAM chips + 12) exchange the motherboard. + + To compile this driver as a module, choose M here: the + module will be called apm. + +if APM + +config APM_IGNORE_USER_SUSPEND + bool "Ignore USER SUSPEND" + help + This option will ignore USER SUSPEND requests. On machines with a + compliant APM BIOS, you want to say N. However, on the NEC Versa M + series notebooks, it is necessary to say Y because of a BIOS bug. + +config APM_DO_ENABLE + bool "Enable PM at boot time" + ---help--- + Enable APM features at boot time. From page 36 of the APM BIOS + specification: "When disabled, the APM BIOS does not automatically + power manage devices, enter the Standby State, enter the Suspend + State, or take power saving steps in response to CPU Idle calls." + This driver will make CPU Idle calls when Linux is idle (unless this + feature is turned off -- see "Do CPU IDLE calls", below). This + should always save battery power, but more complicated APM features + will be dependent on your BIOS implementation. You may need to turn + this option off if your computer hangs at boot time when using APM + support, or if it beeps continuously instead of suspending. Turn + this off if you have a NEC UltraLite Versa 33/C or a Toshiba + T400CDT. This is off by default since most machines do fine without + this feature. + +config APM_CPU_IDLE + bool "Make CPU Idle calls when idle" + help + Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop. + On some machines, this can activate improved power savings, such as + a slowed CPU clock rate, when the machine is idle. These idle calls + are made after the idle loop has run for some length of time (e.g., + 333 mS). On some machines, this will cause a hang at boot time or + whenever the CPU becomes idle. (On machines with more than one CPU, + this option does nothing.) + +config APM_DISPLAY_BLANK + bool "Enable console blanking using APM" + help + Enable console blanking using the APM. Some laptops can use this to + turn off the LCD backlight when the screen blanker of the Linux + virtual console blanks the screen. Note that this is only used by + the virtual console screen blanker, and won't turn off the backlight + when using the X Window system. This also doesn't have anything to + do with your VESA-compliant power-saving monitor. Further, this + option doesn't work for all laptops -- it might not turn off your + backlight at all, or it might print a lot of errors to the console, + especially if you are using gpm. + +config APM_ALLOW_INTS + bool "Allow interrupts during APM BIOS calls" + help + Normally we disable external interrupts while we are making calls to + the APM BIOS as a measure to lessen the effects of a badly behaving + BIOS implementation. The BIOS should reenable interrupts if it + needs to. Unfortunately, some BIOSes do not -- especially those in + many of the newer IBM Thinkpads. If you experience hangs when you + suspend, try setting this to Y. Otherwise, say N. + +config APM_REAL_MODE_POWER_OFF + bool "Use real mode APM BIOS call to power off" + help + Use real mode APM BIOS calls to switch off the computer. This is + a work-around for a number of buggy BIOSes. Switch this option on if + your computer crashes instead of powering off properly. + +endif # APM + +source "arch/x86/kernel/cpu/cpufreq/Kconfig_32" + +source "drivers/cpuidle/Kconfig" + +endmenu + +menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)" + +config PCI + bool "PCI support" if !X86_VISWS + depends on !X86_VOYAGER + default y if X86_VISWS + select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC) + help + Find out whether you have a PCI motherboard. PCI is the name of a + bus system, i.e. the way the CPU talks to the other stuff inside + your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or + VESA. If you have PCI, say Y, otherwise N. + + The PCI-HOWTO, available from + , contains valuable + information about which PCI hardware does work under Linux and which + doesn't. + +choice + prompt "PCI access mode" + depends on PCI && !X86_VISWS + default PCI_GOANY + ---help--- + On PCI systems, the BIOS can be used to detect the PCI devices and + determine their configuration. However, some old PCI motherboards + have BIOS bugs and may crash if this is done. Also, some embedded + PCI-based systems don't have any BIOS at all. Linux can also try to + detect the PCI hardware directly without using the BIOS. + + With this option, you can specify how Linux should detect the + PCI devices. If you choose "BIOS", the BIOS will be used, + if you choose "Direct", the BIOS won't be used, and if you + choose "MMConfig", then PCI Express MMCONFIG will be used. + If you choose "Any", the kernel will try MMCONFIG, then the + direct access method and falls back to the BIOS if that doesn't + work. If unsure, go with the default, which is "Any". + +config PCI_GOBIOS + bool "BIOS" + +config PCI_GOMMCONFIG + bool "MMConfig" + +config PCI_GODIRECT + bool "Direct" + +config PCI_GOANY + bool "Any" + +endchoice + +config PCI_BIOS + bool + depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY) + default y + +config PCI_DIRECT + bool + depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS) + default y + +config PCI_MMCONFIG + bool + depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY) + default y + +config PCI_DOMAINS + bool + depends on PCI + default y + +source "drivers/pci/pcie/Kconfig" + +source "drivers/pci/Kconfig" + +config ISA_DMA_API + bool + default y + +config ISA + bool "ISA support" + depends on !(X86_VOYAGER || X86_VISWS) + help + Find out whether you have ISA slots on your motherboard. ISA is the + name of a bus system, i.e. the way the CPU talks to the other stuff + inside your box. Other bus systems are PCI, EISA, MicroChannel + (MCA) or VESA. ISA is an older system, now being displaced by PCI; + newer boards don't support it. If you have ISA, say Y, otherwise N. + +config EISA + bool "EISA support" + depends on ISA + ---help--- + The Extended Industry Standard Architecture (EISA) bus was + developed as an open alternative to the IBM MicroChannel bus. + + The EISA bus provided some of the features of the IBM MicroChannel + bus while maintaining backward compatibility with cards made for + the older ISA bus. The EISA bus saw limited use between 1988 and + 1995 when it was made obsolete by the PCI bus. + + Say Y here if you are building a kernel for an EISA-based machine. + + Otherwise, say N. + +source "drivers/eisa/Kconfig" + +config MCA + bool "MCA support" if !(X86_VISWS || X86_VOYAGER) + default y if X86_VOYAGER + help + MicroChannel Architecture is found in some IBM PS/2 machines and + laptops. It is a bus system similar to PCI or ISA. See + (and especially the web page given + there) before attempting to build an MCA bus kernel. + +source "drivers/mca/Kconfig" + +config SCx200 + tristate "NatSemi SCx200 support" + depends on !X86_VOYAGER + help + This provides basic support for National Semiconductor's + (now AMD's) Geode processors. The driver probes for the + PCI-IDs of several on-chip devices, so its a good dependency + for other scx200_* drivers. + + If compiled as a module, the driver is named scx200. + +config SCx200HR_TIMER + tristate "NatSemi SCx200 27MHz High-Resolution Timer Support" + depends on SCx200 && GENERIC_TIME + default y + help + This driver provides a clocksource built upon the on-chip + 27MHz high-resolution timer. Its also a workaround for + NSC Geode SC-1100's buggy TSC, which loses time when the + processor goes idle (as is done by the scheduler). The + other workaround is idle=poll boot option. + +config GEODE_MFGPT_TIMER + bool "Geode Multi-Function General Purpose Timer (MFGPT) events" + depends on MGEODE_LX && GENERIC_TIME && GENERIC_CLOCKEVENTS + default y + help + This driver provides a clock event source based on the MFGPT + timer(s) in the CS5535 and CS5536 companion chip for the geode. + MFGPTs have a better resolution and max interval than the + generic PIT, and are suitable for use as high-res timers. + +config K8_NB + def_bool y + depends on AGP_AMD64 + +source "drivers/pcmcia/Kconfig" + +source "drivers/pci/hotplug/Kconfig" + +endmenu + +menu "Executable file formats" + +source "fs/Kconfig.binfmt" + +endmenu + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +source "kernel/Kconfig.instrumentation" + +source "arch/x86/Kconfig.debug" + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" + +# +# Use the generic interrupt handling code in kernel/irq/: +# +config GENERIC_HARDIRQS + bool + default y + +config GENERIC_IRQ_PROBE + bool + default y + +config GENERIC_PENDING_IRQ + bool + depends on GENERIC_HARDIRQS && SMP + default y + +config X86_SMP + bool + depends on SMP && !X86_VOYAGER + default y + +config X86_HT + bool + depends on SMP && !(X86_VISWS || X86_VOYAGER) + default y + +config X86_BIOS_REBOOT + bool + depends on !(X86_VISWS || X86_VOYAGER) + default y + +config X86_TRAMPOLINE + bool + depends on X86_SMP || (X86_VOYAGER && SMP) + default y + +config KTIME_SCALAR + bool + default y diff --git a/arch/x86/Kconfig.x86_64 b/arch/x86/Kconfig.x86_64 new file mode 100644 index 000000000000..e2542e5b536c --- /dev/null +++ b/arch/x86/Kconfig.x86_64 @@ -0,0 +1,844 @@ +# +# For a description of the syntax of this configuration file, +# see Documentation/kbuild/kconfig-language.txt. +# +# Note: ISA is disabled and will hopefully never be enabled. +# If you managed to buy an ISA x86-64 box you'll have to fix all the +# ISA drivers you need yourself. +# + +mainmenu "Linux Kernel Configuration" + +config X86_64 + bool + default y + help + Port to the x86-64 architecture. x86-64 is a 64-bit extension to the + classical 32-bit x86 architecture. For details see + . + +config 64BIT + def_bool y + +config X86 + bool + default y + +config GENERIC_TIME + bool + default y + +config GENERIC_TIME_VSYSCALL + bool + default y + +config GENERIC_CMOS_UPDATE + bool + default y + +config CLOCKSOURCE_WATCHDOG + bool + default y + +config GENERIC_CLOCKEVENTS + bool + default y + +config GENERIC_CLOCKEVENTS_BROADCAST + bool + default y + +config ZONE_DMA32 + bool + default y + +config LOCKDEP_SUPPORT + bool + default y + +config STACKTRACE_SUPPORT + bool + default y + +config SEMAPHORE_SLEEPERS + bool + default y + +config MMU + bool + default y + +config ZONE_DMA + bool + default y + +config ISA + bool + +config SBUS + bool + +config RWSEM_GENERIC_SPINLOCK + bool + default y + +config RWSEM_XCHGADD_ALGORITHM + bool + +config GENERIC_HWEIGHT + bool + default y + +config GENERIC_CALIBRATE_DELAY + bool + default y + +config X86_CMPXCHG + bool + default y + +config EARLY_PRINTK + bool + default y + +config GENERIC_ISA_DMA + bool + default y + +config GENERIC_IOMAP + bool + default y + +config ARCH_MAY_HAVE_PC_FDC + bool + default y + +config ARCH_POPULATES_NODE_MAP + def_bool y + +config DMI + bool + default y + +config AUDIT_ARCH + bool + default y + +config GENERIC_BUG + bool + default y + depends on BUG + +config ARCH_HAS_ILOG2_U32 + bool + default n + +config ARCH_HAS_ILOG2_U64 + bool + default n + +source "init/Kconfig" + + +menu "Processor type and features" + +source "kernel/time/Kconfig" + +choice + prompt "Subarchitecture Type" + default X86_PC + +config X86_PC + bool "PC-compatible" + help + Choose this option if your computer is a standard PC or compatible. + +config X86_VSMP + bool "Support for ScaleMP vSMP" + depends on PCI + help + Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is + supposed to run on these EM64T-based machines. Only choose this option + if you have one of these machines. + +endchoice + +choice + prompt "Processor family" + default GENERIC_CPU + +config MK8 + bool "AMD-Opteron/Athlon64" + help + Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs. + +config MPSC + bool "Intel P4 / older Netburst based Xeon" + help + Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey + Xeon CPUs with Intel 64bit which is compatible with x86-64. + Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the + Netburst core and shouldn't use this option. You can distinguish them + using the cpu family field + in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one. + +config MCORE2 + bool "Intel Core2 / newer Xeon" + help + Optimize for Intel Core2 and newer Xeons (51xx) + You can distinguish the newer Xeons from the older ones using + the cpu family field in /proc/cpuinfo. 15 is an older Xeon + (use CONFIG_MPSC then), 6 is a newer one. + +config GENERIC_CPU + bool "Generic-x86-64" + help + Generic x86-64 CPU. + Run equally well on all x86-64 CPUs. + +endchoice + +# +# Define implied options from the CPU selection here +# +config X86_L1_CACHE_BYTES + int + default "128" if GENERIC_CPU || MPSC + default "64" if MK8 || MCORE2 + +config X86_L1_CACHE_SHIFT + int + default "7" if GENERIC_CPU || MPSC + default "6" if MK8 || MCORE2 + +config X86_INTERNODE_CACHE_BYTES + int + default "4096" if X86_VSMP + default X86_L1_CACHE_BYTES if !X86_VSMP + +config X86_TSC + bool + default y + +config X86_GOOD_APIC + bool + default y + +config MICROCODE + tristate "/dev/cpu/microcode - Intel CPU microcode support" + select FW_LOADER + ---help--- + If you say Y here the 'File systems' section, you will be + able to update the microcode on Intel processors. You will + obviously need the actual microcode binary data itself which is + not shipped with the Linux kernel. + + For latest news and information on obtaining all the required + ingredients for this driver, check: + . + + To compile this driver as a module, choose M here: the + module will be called microcode. + If you use modprobe or kmod you may also want to add the line + 'alias char-major-10-184 microcode' to your /etc/modules.conf file. + +config MICROCODE_OLD_INTERFACE + bool + depends on MICROCODE + default y + +config X86_MSR + tristate "/dev/cpu/*/msr - Model-specific register support" + help + This device gives privileged processes access to the x86 + Model-Specific Registers (MSRs). It is a character device with + major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. + MSR accesses are directed to a specific CPU on multi-processor + systems. + +config X86_CPUID + tristate "/dev/cpu/*/cpuid - CPU information support" + help + This device gives processes access to the x86 CPUID instruction to + be executed on a specific processor. It is a character device + with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to + /dev/cpu/31/cpuid. + +config X86_HT + bool + depends on SMP && !MK8 + default y + +config MATH_EMULATION + bool + +config MCA + bool + +config EISA + bool + +config X86_IO_APIC + bool + default y + +config X86_LOCAL_APIC + bool + default y + +config MTRR + bool "MTRR (Memory Type Range Register) support" + ---help--- + On Intel P6 family processors (Pentium Pro, Pentium II and later) + the Memory Type Range Registers (MTRRs) may be used to control + processor access to memory ranges. This is most useful if you have + a video (VGA) card on a PCI or AGP bus. Enabling write-combining + allows bus write transfers to be combined into a larger transfer + before bursting over the PCI/AGP bus. This can increase performance + of image write operations 2.5 times or more. Saying Y here creates a + /proc/mtrr file which may be used to manipulate your processor's + MTRRs. Typically the X server should use this. + + This code has a reasonably generic interface so that similar + control registers on other processors can be easily supported + as well. + + Saying Y here also fixes a problem with buggy SMP BIOSes which only + set the MTRRs for the boot CPU and not for the secondary CPUs. This + can lead to all sorts of problems, so it's good to say Y here. + + Just say Y here, all x86-64 machines support MTRRs. + + See for more information. + +config SMP + bool "Symmetric multi-processing support" + ---help--- + This enables support for systems with more than one CPU. If you have + a system with only one CPU, like most personal computers, say N. If + you have a system with more than one CPU, say Y. + + If you say N here, the kernel will run on single and multiprocessor + machines, but will use only one CPU of a multiprocessor machine. If + you say Y here, the kernel will run on many, but not all, + singleprocessor machines. On a singleprocessor machine, the kernel + will run faster if you say N here. + + If you don't know what to do here, say N. + +config SCHED_SMT + bool "SMT (Hyperthreading) scheduler support" + depends on SMP + default n + help + SMT scheduler support improves the CPU scheduler's decision making + when dealing with Intel Pentium 4 chips with HyperThreading at a + cost of slightly increased overhead in some places. If unsure say + N here. + +config SCHED_MC + bool "Multi-core scheduler support" + depends on SMP + default y + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. If unsure say N here. + +source "kernel/Kconfig.preempt" + +config NUMA + bool "Non Uniform Memory Access (NUMA) Support" + depends on SMP + help + Enable NUMA (Non Uniform Memory Access) support. The kernel + will try to allocate memory used by a CPU on the local memory + controller of the CPU and add some more NUMA awareness to the kernel. + This code is recommended on all multiprocessor Opteron systems. + If the system is EM64T, you should say N unless your system is EM64T + NUMA. + +config K8_NUMA + bool "Old style AMD Opteron NUMA detection" + depends on NUMA && PCI + default y + help + Enable K8 NUMA node topology detection. You should say Y here if + you have a multi processor AMD K8 system. This uses an old + method to read the NUMA configuration directly from the builtin + Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA + instead, which also takes priority if both are compiled in. + +config NODES_SHIFT + int + default "6" + depends on NEED_MULTIPLE_NODES + +# Dummy CONFIG option to select ACPI_NUMA from drivers/acpi/Kconfig. + +config X86_64_ACPI_NUMA + bool "ACPI NUMA detection" + depends on NUMA + select ACPI + select PCI + select ACPI_NUMA + default y + help + Enable ACPI SRAT based node topology detection. + +config NUMA_EMU + bool "NUMA emulation" + depends on NUMA + help + Enable NUMA emulation. A flat machine will be split + into virtual nodes when booted with "numa=fake=N", where N is the + number of nodes. This is only useful for debugging. + +config ARCH_DISCONTIGMEM_ENABLE + bool + depends on NUMA + default y + +config ARCH_DISCONTIGMEM_DEFAULT + def_bool y + depends on NUMA + +config ARCH_SPARSEMEM_ENABLE + def_bool y + depends on (NUMA || EXPERIMENTAL) + select SPARSEMEM_VMEMMAP_ENABLE + +config ARCH_MEMORY_PROBE + def_bool y + depends on MEMORY_HOTPLUG + +config ARCH_FLATMEM_ENABLE + def_bool y + depends on !NUMA + +source "mm/Kconfig" + +config MEMORY_HOTPLUG_RESERVE + def_bool y + depends on (MEMORY_HOTPLUG && DISCONTIGMEM) + +config HAVE_ARCH_EARLY_PFN_TO_NID + def_bool y + depends on NUMA + +config OUT_OF_LINE_PFN_TO_PAGE + def_bool y + depends on DISCONTIGMEM + +config NR_CPUS + int "Maximum number of CPUs (2-255)" + range 2 255 + depends on SMP + default "8" + help + This allows you to specify the maximum number of CPUs which this + kernel will support. Current maximum is 255 CPUs due to + APIC addressing limits. Less depending on the hardware. + + This is purely to save memory - each supported CPU requires + memory in the static kernel configuration. + +config PHYSICAL_ALIGN + hex + default "0x200000" + +config HOTPLUG_CPU + bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)" + depends on SMP && HOTPLUG && EXPERIMENTAL + help + Say Y here to experiment with turning CPUs off and on. CPUs + can be controlled through /sys/devices/system/cpu/cpu#. + This is also required for suspend/hibernation on SMP systems. + + Say N if you want to disable CPU hotplug and don't need to + suspend. + +config ARCH_ENABLE_MEMORY_HOTPLUG + def_bool y + +config HPET_TIMER + bool + default y + help + Use the IA-PC HPET (High Precision Event Timer) to manage + time in preference to the PIT and RTC, if a HPET is + present. The HPET provides a stable time base on SMP + systems, unlike the TSC, but it is more expensive to access, + as it is off-chip. You can find the HPET spec at + . + +config HPET_EMULATE_RTC + bool + depends on HPET_TIMER && RTC=y + default y + +# Mark as embedded because too many people got it wrong. +# The code disables itself when not needed. +config IOMMU + bool "IOMMU support" if EMBEDDED + default y + select SWIOTLB + select AGP + depends on PCI + help + Support for full DMA access of devices with 32bit memory access only + on systems with more than 3GB. This is usually needed for USB, + sound, many IDE/SATA chipsets and some other devices. + Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART + based hardware IOMMU and a software bounce buffer based IOMMU used + on Intel systems and as fallback. + The code is only active when needed (enough memory and limited + device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified + too. + +config CALGARY_IOMMU + bool "IBM Calgary IOMMU support" + select SWIOTLB + depends on PCI && EXPERIMENTAL + help + Support for hardware IOMMUs in IBM's xSeries x366 and x460 + systems. Needed to run systems with more than 3GB of memory + properly with 32-bit PCI devices that do not support DAC + (Double Address Cycle). Calgary also supports bus level + isolation, where all DMAs pass through the IOMMU. This + prevents them from going anywhere except their intended + destination. This catches hard-to-find kernel bugs and + mis-behaving drivers and devices that do not use the DMA-API + properly to set up their DMA buffers. The IOMMU can be + turned off at boot time with the iommu=off parameter. + Normally the kernel will make the right choice by itself. + If unsure, say Y. + +config CALGARY_IOMMU_ENABLED_BY_DEFAULT + bool "Should Calgary be enabled by default?" + default y + depends on CALGARY_IOMMU + help + Should Calgary be enabled by default? if you choose 'y', Calgary + will be used (if it exists). If you choose 'n', Calgary will not be + used even if it exists. If you choose 'n' and would like to use + Calgary anyway, pass 'iommu=calgary' on the kernel command line. + If unsure, say Y. + +# need this always selected by IOMMU for the VIA workaround +config SWIOTLB + bool + help + Support for software bounce buffers used on x86-64 systems + which don't have a hardware IOMMU (e.g. the current generation + of Intel's x86-64 CPUs). Using this PCI devices which can only + access 32-bits of memory can be used on systems with more than + 3 GB of memory. If unsure, say Y. + +config X86_MCE + bool "Machine check support" if EMBEDDED + default y + help + Include a machine check error handler to report hardware errors. + This version will require the mcelog utility to decode some + machine check error logs. See + ftp://ftp.x86-64.org/pub/linux/tools/mcelog + +config X86_MCE_INTEL + bool "Intel MCE features" + depends on X86_MCE && X86_LOCAL_APIC + default y + help + Additional support for intel specific MCE features such as + the thermal monitor. + +config X86_MCE_AMD + bool "AMD MCE features" + depends on X86_MCE && X86_LOCAL_APIC + default y + help + Additional support for AMD specific MCE features such as + the DRAM Error Threshold. + +config KEXEC + bool "kexec system call" + help + kexec is a system call that implements the ability to shutdown your + current kernel, and to start another kernel. It is like a reboot + but it is independent of the system firmware. And like a reboot + you can start any kernel with it, not just Linux. + + The name comes from the similarity to the exec system call. + + It is an ongoing process to be certain the hardware in a machine + is properly shutdown, so do not be surprised if this code does not + initially work for you. It may help to enable device hotplugging + support. As of this writing the exact hardware interface is + strongly in flux, so no good recommendation can be made. + +config CRASH_DUMP + bool "kernel crash dumps (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + Generate crash dump after being started by kexec. + This should be normally only set in special crash dump kernels + which are loaded in the main kernel with kexec-tools into + a specially reserved region and then later executed after + a crash by kdump/kexec. The crash dump kernel must be compiled + to a memory address not used by the main kernel or BIOS using + PHYSICAL_START, or it must be built as a relocatable image + (CONFIG_RELOCATABLE=y). + For more details see Documentation/kdump/kdump.txt + +config RELOCATABLE + bool "Build a relocatable kernel (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + Builds a relocatable kernel. This enables loading and running + a kernel binary from a different physical address than it has + been compiled for. + + One use is for the kexec on panic case where the recovery kernel + must live at a different physical address than the primary + kernel. + + Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address + it has been loaded at and the compile time physical address + (CONFIG_PHYSICAL_START) is ignored. + +config PHYSICAL_START + hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) + default "0x200000" + help + This gives the physical address where the kernel is loaded. It + should be aligned to 2MB boundary. + + If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then + bzImage will decompress itself to above physical address and + run from there. Otherwise, bzImage will run from the address where + it has been loaded by the boot loader and will ignore above physical + address. + + In normal kdump cases one does not have to set/change this option + as now bzImage can be compiled as a completely relocatable image + (CONFIG_RELOCATABLE=y) and be used to load and run from a different + address. This option is mainly useful for the folks who don't want + to use a bzImage for capturing the crash dump and want to use a + vmlinux instead. + + So if you are using bzImage for capturing the crash dump, leave + the value here unchanged to 0x200000 and set CONFIG_RELOCATABLE=y. + Otherwise if you plan to use vmlinux for capturing the crash dump + change this value to start of the reserved region (Typically 16MB + 0x1000000). In other words, it can be set based on the "X" value as + specified in the "crashkernel=YM@XM" command line boot parameter + passed to the panic-ed kernel. Typically this parameter is set as + crashkernel=64M@16M. Please take a look at + Documentation/kdump/kdump.txt for more details about crash dumps. + + Usage of bzImage for capturing the crash dump is advantageous as + one does not have to build two kernels. Same kernel can be used + as production kernel and capture kernel. + + Don't change this unless you know what you are doing. + +config SECCOMP + bool "Enable seccomp to safely compute untrusted bytecode" + depends on PROC_FS + default y + help + This kernel feature is useful for number crunching applications + that may need to compute untrusted bytecode during their + execution. By using pipes or other transports made available to + the process as file descriptors supporting the read/write + syscalls, it's possible to isolate those applications in + their own address space using seccomp. Once seccomp is + enabled via /proc//seccomp, it cannot be disabled + and the task is only allowed to execute a few safe syscalls + defined by each seccomp mode. + + If unsure, say Y. Only embedded should say N here. + +config CC_STACKPROTECTOR + bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + This option turns on the -fstack-protector GCC feature. This + feature puts, at the beginning of critical functions, a canary + value on the stack just before the return address, and validates + the value just before actually returning. Stack based buffer + overflows (that need to overwrite this return address) now also + overwrite the canary, which gets detected and the attack is then + neutralized via a kernel panic. + + This feature requires gcc version 4.2 or above, or a distribution + gcc with the feature backported. Older versions are automatically + detected and for those versions, this configuration option is ignored. + +config CC_STACKPROTECTOR_ALL + bool "Use stack-protector for all functions" + depends on CC_STACKPROTECTOR + help + Normally, GCC only inserts the canary value protection for + functions that use large-ish on-stack buffers. By enabling + this option, GCC will be asked to do this for ALL functions. + +source kernel/Kconfig.hz + +config K8_NB + def_bool y + depends on AGP_AMD64 || IOMMU || (PCI && NUMA) + +endmenu + +# +# Use the generic interrupt handling code in kernel/irq/: +# +config GENERIC_HARDIRQS + bool + default y + +config GENERIC_IRQ_PROBE + bool + default y + +# we have no ISA slots, but we do have ISA-style DMA. +config ISA_DMA_API + bool + default y + +config GENERIC_PENDING_IRQ + bool + depends on GENERIC_HARDIRQS && SMP + default y + +menu "Power management options" + +source kernel/power/Kconfig + +config ARCH_HIBERNATION_HEADER + bool + depends on HIBERNATION + default y + +source "drivers/acpi/Kconfig" + +source "arch/x86/kernel/cpu/cpufreq/Kconfig_64" + +source "drivers/cpuidle/Kconfig" + +endmenu + +menu "Bus options (PCI etc.)" + +config PCI + bool "PCI support" + select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC) + +# x86-64 doesn't support PCI BIOS access from long mode so always go direct. +config PCI_DIRECT + bool + depends on PCI + default y + +config PCI_MMCONFIG + bool "Support mmconfig PCI config space access" + depends on PCI && ACPI + +config PCI_DOMAINS + bool + depends on PCI + default y + +config DMAR + bool "Support for DMA Remapping Devices (EXPERIMENTAL)" + depends on PCI_MSI && ACPI && EXPERIMENTAL + default y + help + DMA remapping (DMAR) devices support enables independent address + translations for Direct Memory Access (DMA) from devices. + These DMA remapping devices are reported via ACPI tables + and include PCI device scope covered by these DMA + remapping devices. + +config DMAR_GFX_WA + bool "Support for Graphics workaround" + depends on DMAR + default y + help + Current Graphics drivers tend to use physical address + for DMA and avoid using DMA APIs. Setting this config + option permits the IOMMU driver to set a unity map for + all the OS-visible memory. Hence the driver can continue + to use physical addresses for DMA. + +config DMAR_FLOPPY_WA + bool + depends on DMAR + default y + help + Floppy disk drivers are know to bypass DMA API calls + thereby failing to work when IOMMU is enabled. This + workaround will setup a 1:1 mapping for the first + 16M to make floppy (an ISA device) work. + +source "drivers/pci/pcie/Kconfig" + +source "drivers/pci/Kconfig" + +source "drivers/pcmcia/Kconfig" + +source "drivers/pci/hotplug/Kconfig" + +endmenu + + +menu "Executable file formats / Emulations" + +source "fs/Kconfig.binfmt" + +config IA32_EMULATION + bool "IA32 Emulation" + help + Include code to run 32-bit programs under a 64-bit kernel. You should + likely turn this on, unless you're 100% sure that you don't have any + 32-bit programs left. + +config IA32_AOUT + tristate "IA32 a.out support" + depends on IA32_EMULATION + help + Support old a.out binaries in the 32bit emulation. + +config COMPAT + bool + depends on IA32_EMULATION + default y + +config COMPAT_FOR_U64_ALIGNMENT + def_bool COMPAT + +config SYSVIPC_COMPAT + bool + depends on COMPAT && SYSVIPC + default y + +endmenu + +source "net/Kconfig" + +source drivers/Kconfig + +source "drivers/firmware/Kconfig" + +source fs/Kconfig + +source "kernel/Kconfig.instrumentation" + +source "arch/x86/Kconfig.debug" + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig deleted file mode 100644 index e2542e5b536c..000000000000 --- a/arch/x86_64/Kconfig +++ /dev/null @@ -1,844 +0,0 @@ -# -# For a description of the syntax of this configuration file, -# see Documentation/kbuild/kconfig-language.txt. -# -# Note: ISA is disabled and will hopefully never be enabled. -# If you managed to buy an ISA x86-64 box you'll have to fix all the -# ISA drivers you need yourself. -# - -mainmenu "Linux Kernel Configuration" - -config X86_64 - bool - default y - help - Port to the x86-64 architecture. x86-64 is a 64-bit extension to the - classical 32-bit x86 architecture. For details see - . - -config 64BIT - def_bool y - -config X86 - bool - default y - -config GENERIC_TIME - bool - default y - -config GENERIC_TIME_VSYSCALL - bool - default y - -config GENERIC_CMOS_UPDATE - bool - default y - -config CLOCKSOURCE_WATCHDOG - bool - default y - -config GENERIC_CLOCKEVENTS - bool - default y - -config GENERIC_CLOCKEVENTS_BROADCAST - bool - default y - -config ZONE_DMA32 - bool - default y - -config LOCKDEP_SUPPORT - bool - default y - -config STACKTRACE_SUPPORT - bool - default y - -config SEMAPHORE_SLEEPERS - bool - default y - -config MMU - bool - default y - -config ZONE_DMA - bool - default y - -config ISA - bool - -config SBUS - bool - -config RWSEM_GENERIC_SPINLOCK - bool - default y - -config RWSEM_XCHGADD_ALGORITHM - bool - -config GENERIC_HWEIGHT - bool - default y - -config GENERIC_CALIBRATE_DELAY - bool - default y - -config X86_CMPXCHG - bool - default y - -config EARLY_PRINTK - bool - default y - -config GENERIC_ISA_DMA - bool - default y - -config GENERIC_IOMAP - bool - default y - -config ARCH_MAY_HAVE_PC_FDC - bool - default y - -config ARCH_POPULATES_NODE_MAP - def_bool y - -config DMI - bool - default y - -config AUDIT_ARCH - bool - default y - -config GENERIC_BUG - bool - default y - depends on BUG - -config ARCH_HAS_ILOG2_U32 - bool - default n - -config ARCH_HAS_ILOG2_U64 - bool - default n - -source "init/Kconfig" - - -menu "Processor type and features" - -source "kernel/time/Kconfig" - -choice - prompt "Subarchitecture Type" - default X86_PC - -config X86_PC - bool "PC-compatible" - help - Choose this option if your computer is a standard PC or compatible. - -config X86_VSMP - bool "Support for ScaleMP vSMP" - depends on PCI - help - Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is - supposed to run on these EM64T-based machines. Only choose this option - if you have one of these machines. - -endchoice - -choice - prompt "Processor family" - default GENERIC_CPU - -config MK8 - bool "AMD-Opteron/Athlon64" - help - Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs. - -config MPSC - bool "Intel P4 / older Netburst based Xeon" - help - Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey - Xeon CPUs with Intel 64bit which is compatible with x86-64. - Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the - Netburst core and shouldn't use this option. You can distinguish them - using the cpu family field - in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one. - -config MCORE2 - bool "Intel Core2 / newer Xeon" - help - Optimize for Intel Core2 and newer Xeons (51xx) - You can distinguish the newer Xeons from the older ones using - the cpu family field in /proc/cpuinfo. 15 is an older Xeon - (use CONFIG_MPSC then), 6 is a newer one. - -config GENERIC_CPU - bool "Generic-x86-64" - help - Generic x86-64 CPU. - Run equally well on all x86-64 CPUs. - -endchoice - -# -# Define implied options from the CPU selection here -# -config X86_L1_CACHE_BYTES - int - default "128" if GENERIC_CPU || MPSC - default "64" if MK8 || MCORE2 - -config X86_L1_CACHE_SHIFT - int - default "7" if GENERIC_CPU || MPSC - default "6" if MK8 || MCORE2 - -config X86_INTERNODE_CACHE_BYTES - int - default "4096" if X86_VSMP - default X86_L1_CACHE_BYTES if !X86_VSMP - -config X86_TSC - bool - default y - -config X86_GOOD_APIC - bool - default y - -config MICROCODE - tristate "/dev/cpu/microcode - Intel CPU microcode support" - select FW_LOADER - ---help--- - If you say Y here the 'File systems' section, you will be - able to update the microcode on Intel processors. You will - obviously need the actual microcode binary data itself which is - not shipped with the Linux kernel. - - For latest news and information on obtaining all the required - ingredients for this driver, check: - . - - To compile this driver as a module, choose M here: the - module will be called microcode. - If you use modprobe or kmod you may also want to add the line - 'alias char-major-10-184 microcode' to your /etc/modules.conf file. - -config MICROCODE_OLD_INTERFACE - bool - depends on MICROCODE - default y - -config X86_MSR - tristate "/dev/cpu/*/msr - Model-specific register support" - help - This device gives privileged processes access to the x86 - Model-Specific Registers (MSRs). It is a character device with - major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. - MSR accesses are directed to a specific CPU on multi-processor - systems. - -config X86_CPUID - tristate "/dev/cpu/*/cpuid - CPU information support" - help - This device gives processes access to the x86 CPUID instruction to - be executed on a specific processor. It is a character device - with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to - /dev/cpu/31/cpuid. - -config X86_HT - bool - depends on SMP && !MK8 - default y - -config MATH_EMULATION - bool - -config MCA - bool - -config EISA - bool - -config X86_IO_APIC - bool - default y - -config X86_LOCAL_APIC - bool - default y - -config MTRR - bool "MTRR (Memory Type Range Register) support" - ---help--- - On Intel P6 family processors (Pentium Pro, Pentium II and later) - the Memory Type Range Registers (MTRRs) may be used to control - processor access to memory ranges. This is most useful if you have - a video (VGA) card on a PCI or AGP bus. Enabling write-combining - allows bus write transfers to be combined into a larger transfer - before bursting over the PCI/AGP bus. This can increase performance - of image write operations 2.5 times or more. Saying Y here creates a - /proc/mtrr file which may be used to manipulate your processor's - MTRRs. Typically the X server should use this. - - This code has a reasonably generic interface so that similar - control registers on other processors can be easily supported - as well. - - Saying Y here also fixes a problem with buggy SMP BIOSes which only - set the MTRRs for the boot CPU and not for the secondary CPUs. This - can lead to all sorts of problems, so it's good to say Y here. - - Just say Y here, all x86-64 machines support MTRRs. - - See for more information. - -config SMP - bool "Symmetric multi-processing support" - ---help--- - This enables support for systems with more than one CPU. If you have - a system with only one CPU, like most personal computers, say N. If - you have a system with more than one CPU, say Y. - - If you say N here, the kernel will run on single and multiprocessor - machines, but will use only one CPU of a multiprocessor machine. If - you say Y here, the kernel will run on many, but not all, - singleprocessor machines. On a singleprocessor machine, the kernel - will run faster if you say N here. - - If you don't know what to do here, say N. - -config SCHED_SMT - bool "SMT (Hyperthreading) scheduler support" - depends on SMP - default n - help - SMT scheduler support improves the CPU scheduler's decision making - when dealing with Intel Pentium 4 chips with HyperThreading at a - cost of slightly increased overhead in some places. If unsure say - N here. - -config SCHED_MC - bool "Multi-core scheduler support" - depends on SMP - default y - help - Multi-core scheduler support improves the CPU scheduler's decision - making when dealing with multi-core CPU chips at a cost of slightly - increased overhead in some places. If unsure say N here. - -source "kernel/Kconfig.preempt" - -config NUMA - bool "Non Uniform Memory Access (NUMA) Support" - depends on SMP - help - Enable NUMA (Non Uniform Memory Access) support. The kernel - will try to allocate memory used by a CPU on the local memory - controller of the CPU and add some more NUMA awareness to the kernel. - This code is recommended on all multiprocessor Opteron systems. - If the system is EM64T, you should say N unless your system is EM64T - NUMA. - -config K8_NUMA - bool "Old style AMD Opteron NUMA detection" - depends on NUMA && PCI - default y - help - Enable K8 NUMA node topology detection. You should say Y here if - you have a multi processor AMD K8 system. This uses an old - method to read the NUMA configuration directly from the builtin - Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA - instead, which also takes priority if both are compiled in. - -config NODES_SHIFT - int - default "6" - depends on NEED_MULTIPLE_NODES - -# Dummy CONFIG option to select ACPI_NUMA from drivers/acpi/Kconfig. - -config X86_64_ACPI_NUMA - bool "ACPI NUMA detection" - depends on NUMA - select ACPI - select PCI - select ACPI_NUMA - default y - help - Enable ACPI SRAT based node topology detection. - -config NUMA_EMU - bool "NUMA emulation" - depends on NUMA - help - Enable NUMA emulation. A flat machine will be split - into virtual nodes when booted with "numa=fake=N", where N is the - number of nodes. This is only useful for debugging. - -config ARCH_DISCONTIGMEM_ENABLE - bool - depends on NUMA - default y - -config ARCH_DISCONTIGMEM_DEFAULT - def_bool y - depends on NUMA - -config ARCH_SPARSEMEM_ENABLE - def_bool y - depends on (NUMA || EXPERIMENTAL) - select SPARSEMEM_VMEMMAP_ENABLE - -config ARCH_MEMORY_PROBE - def_bool y - depends on MEMORY_HOTPLUG - -config ARCH_FLATMEM_ENABLE - def_bool y - depends on !NUMA - -source "mm/Kconfig" - -config MEMORY_HOTPLUG_RESERVE - def_bool y - depends on (MEMORY_HOTPLUG && DISCONTIGMEM) - -config HAVE_ARCH_EARLY_PFN_TO_NID - def_bool y - depends on NUMA - -config OUT_OF_LINE_PFN_TO_PAGE - def_bool y - depends on DISCONTIGMEM - -config NR_CPUS - int "Maximum number of CPUs (2-255)" - range 2 255 - depends on SMP - default "8" - help - This allows you to specify the maximum number of CPUs which this - kernel will support. Current maximum is 255 CPUs due to - APIC addressing limits. Less depending on the hardware. - - This is purely to save memory - each supported CPU requires - memory in the static kernel configuration. - -config PHYSICAL_ALIGN - hex - default "0x200000" - -config HOTPLUG_CPU - bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)" - depends on SMP && HOTPLUG && EXPERIMENTAL - help - Say Y here to experiment with turning CPUs off and on. CPUs - can be controlled through /sys/devices/system/cpu/cpu#. - This is also required for suspend/hibernation on SMP systems. - - Say N if you want to disable CPU hotplug and don't need to - suspend. - -config ARCH_ENABLE_MEMORY_HOTPLUG - def_bool y - -config HPET_TIMER - bool - default y - help - Use the IA-PC HPET (High Precision Event Timer) to manage - time in preference to the PIT and RTC, if a HPET is - present. The HPET provides a stable time base on SMP - systems, unlike the TSC, but it is more expensive to access, - as it is off-chip. You can find the HPET spec at - . - -config HPET_EMULATE_RTC - bool - depends on HPET_TIMER && RTC=y - default y - -# Mark as embedded because too many people got it wrong. -# The code disables itself when not needed. -config IOMMU - bool "IOMMU support" if EMBEDDED - default y - select SWIOTLB - select AGP - depends on PCI - help - Support for full DMA access of devices with 32bit memory access only - on systems with more than 3GB. This is usually needed for USB, - sound, many IDE/SATA chipsets and some other devices. - Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART - based hardware IOMMU and a software bounce buffer based IOMMU used - on Intel systems and as fallback. - The code is only active when needed (enough memory and limited - device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified - too. - -config CALGARY_IOMMU - bool "IBM Calgary IOMMU support" - select SWIOTLB - depends on PCI && EXPERIMENTAL - help - Support for hardware IOMMUs in IBM's xSeries x366 and x460 - systems. Needed to run systems with more than 3GB of memory - properly with 32-bit PCI devices that do not support DAC - (Double Address Cycle). Calgary also supports bus level - isolation, where all DMAs pass through the IOMMU. This - prevents them from going anywhere except their intended - destination. This catches hard-to-find kernel bugs and - mis-behaving drivers and devices that do not use the DMA-API - properly to set up their DMA buffers. The IOMMU can be - turned off at boot time with the iommu=off parameter. - Normally the kernel will make the right choice by itself. - If unsure, say Y. - -config CALGARY_IOMMU_ENABLED_BY_DEFAULT - bool "Should Calgary be enabled by default?" - default y - depends on CALGARY_IOMMU - help - Should Calgary be enabled by default? if you choose 'y', Calgary - will be used (if it exists). If you choose 'n', Calgary will not be - used even if it exists. If you choose 'n' and would like to use - Calgary anyway, pass 'iommu=calgary' on the kernel command line. - If unsure, say Y. - -# need this always selected by IOMMU for the VIA workaround -config SWIOTLB - bool - help - Support for software bounce buffers used on x86-64 systems - which don't have a hardware IOMMU (e.g. the current generation - of Intel's x86-64 CPUs). Using this PCI devices which can only - access 32-bits of memory can be used on systems with more than - 3 GB of memory. If unsure, say Y. - -config X86_MCE - bool "Machine check support" if EMBEDDED - default y - help - Include a machine check error handler to report hardware errors. - This version will require the mcelog utility to decode some - machine check error logs. See - ftp://ftp.x86-64.org/pub/linux/tools/mcelog - -config X86_MCE_INTEL - bool "Intel MCE features" - depends on X86_MCE && X86_LOCAL_APIC - default y - help - Additional support for intel specific MCE features such as - the thermal monitor. - -config X86_MCE_AMD - bool "AMD MCE features" - depends on X86_MCE && X86_LOCAL_APIC - default y - help - Additional support for AMD specific MCE features such as - the DRAM Error Threshold. - -config KEXEC - bool "kexec system call" - help - kexec is a system call that implements the ability to shutdown your - current kernel, and to start another kernel. It is like a reboot - but it is independent of the system firmware. And like a reboot - you can start any kernel with it, not just Linux. - - The name comes from the similarity to the exec system call. - - It is an ongoing process to be certain the hardware in a machine - is properly shutdown, so do not be surprised if this code does not - initially work for you. It may help to enable device hotplugging - support. As of this writing the exact hardware interface is - strongly in flux, so no good recommendation can be made. - -config CRASH_DUMP - bool "kernel crash dumps (EXPERIMENTAL)" - depends on EXPERIMENTAL - help - Generate crash dump after being started by kexec. - This should be normally only set in special crash dump kernels - which are loaded in the main kernel with kexec-tools into - a specially reserved region and then later executed after - a crash by kdump/kexec. The crash dump kernel must be compiled - to a memory address not used by the main kernel or BIOS using - PHYSICAL_START, or it must be built as a relocatable image - (CONFIG_RELOCATABLE=y). - For more details see Documentation/kdump/kdump.txt - -config RELOCATABLE - bool "Build a relocatable kernel (EXPERIMENTAL)" - depends on EXPERIMENTAL - help - Builds a relocatable kernel. This enables loading and running - a kernel binary from a different physical address than it has - been compiled for. - - One use is for the kexec on panic case where the recovery kernel - must live at a different physical address than the primary - kernel. - - Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address - it has been loaded at and the compile time physical address - (CONFIG_PHYSICAL_START) is ignored. - -config PHYSICAL_START - hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) - default "0x200000" - help - This gives the physical address where the kernel is loaded. It - should be aligned to 2MB boundary. - - If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then - bzImage will decompress itself to above physical address and - run from there. Otherwise, bzImage will run from the address where - it has been loaded by the boot loader and will ignore above physical - address. - - In normal kdump cases one does not have to set/change this option - as now bzImage can be compiled as a completely relocatable image - (CONFIG_RELOCATABLE=y) and be used to load and run from a different - address. This option is mainly useful for the folks who don't want - to use a bzImage for capturing the crash dump and want to use a - vmlinux instead. - - So if you are using bzImage for capturing the crash dump, leave - the value here unchanged to 0x200000 and set CONFIG_RELOCATABLE=y. - Otherwise if you plan to use vmlinux for capturing the crash dump - change this value to start of the reserved region (Typically 16MB - 0x1000000). In other words, it can be set based on the "X" value as - specified in the "crashkernel=YM@XM" command line boot parameter - passed to the panic-ed kernel. Typically this parameter is set as - crashkernel=64M@16M. Please take a look at - Documentation/kdump/kdump.txt for more details about crash dumps. - - Usage of bzImage for capturing the crash dump is advantageous as - one does not have to build two kernels. Same kernel can be used - as production kernel and capture kernel. - - Don't change this unless you know what you are doing. - -config SECCOMP - bool "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS - default y - help - This kernel feature is useful for number crunching applications - that may need to compute untrusted bytecode during their - execution. By using pipes or other transports made available to - the process as file descriptors supporting the read/write - syscalls, it's possible to isolate those applications in - their own address space using seccomp. Once seccomp is - enabled via /proc//seccomp, it cannot be disabled - and the task is only allowed to execute a few safe syscalls - defined by each seccomp mode. - - If unsure, say Y. Only embedded should say N here. - -config CC_STACKPROTECTOR - bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" - depends on EXPERIMENTAL - help - This option turns on the -fstack-protector GCC feature. This - feature puts, at the beginning of critical functions, a canary - value on the stack just before the return address, and validates - the value just before actually returning. Stack based buffer - overflows (that need to overwrite this return address) now also - overwrite the canary, which gets detected and the attack is then - neutralized via a kernel panic. - - This feature requires gcc version 4.2 or above, or a distribution - gcc with the feature backported. Older versions are automatically - detected and for those versions, this configuration option is ignored. - -config CC_STACKPROTECTOR_ALL - bool "Use stack-protector for all functions" - depends on CC_STACKPROTECTOR - help - Normally, GCC only inserts the canary value protection for - functions that use large-ish on-stack buffers. By enabling - this option, GCC will be asked to do this for ALL functions. - -source kernel/Kconfig.hz - -config K8_NB - def_bool y - depends on AGP_AMD64 || IOMMU || (PCI && NUMA) - -endmenu - -# -# Use the generic interrupt handling code in kernel/irq/: -# -config GENERIC_HARDIRQS - bool - default y - -config GENERIC_IRQ_PROBE - bool - default y - -# we have no ISA slots, but we do have ISA-style DMA. -config ISA_DMA_API - bool - default y - -config GENERIC_PENDING_IRQ - bool - depends on GENERIC_HARDIRQS && SMP - default y - -menu "Power management options" - -source kernel/power/Kconfig - -config ARCH_HIBERNATION_HEADER - bool - depends on HIBERNATION - default y - -source "drivers/acpi/Kconfig" - -source "arch/x86/kernel/cpu/cpufreq/Kconfig_64" - -source "drivers/cpuidle/Kconfig" - -endmenu - -menu "Bus options (PCI etc.)" - -config PCI - bool "PCI support" - select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC) - -# x86-64 doesn't support PCI BIOS access from long mode so always go direct. -config PCI_DIRECT - bool - depends on PCI - default y - -config PCI_MMCONFIG - bool "Support mmconfig PCI config space access" - depends on PCI && ACPI - -config PCI_DOMAINS - bool - depends on PCI - default y - -config DMAR - bool "Support for DMA Remapping Devices (EXPERIMENTAL)" - depends on PCI_MSI && ACPI && EXPERIMENTAL - default y - help - DMA remapping (DMAR) devices support enables independent address - translations for Direct Memory Access (DMA) from devices. - These DMA remapping devices are reported via ACPI tables - and include PCI device scope covered by these DMA - remapping devices. - -config DMAR_GFX_WA - bool "Support for Graphics workaround" - depends on DMAR - default y - help - Current Graphics drivers tend to use physical address - for DMA and avoid using DMA APIs. Setting this config - option permits the IOMMU driver to set a unity map for - all the OS-visible memory. Hence the driver can continue - to use physical addresses for DMA. - -config DMAR_FLOPPY_WA - bool - depends on DMAR - default y - help - Floppy disk drivers are know to bypass DMA API calls - thereby failing to work when IOMMU is enabled. This - workaround will setup a 1:1 mapping for the first - 16M to make floppy (an ISA device) work. - -source "drivers/pci/pcie/Kconfig" - -source "drivers/pci/Kconfig" - -source "drivers/pcmcia/Kconfig" - -source "drivers/pci/hotplug/Kconfig" - -endmenu - - -menu "Executable file formats / Emulations" - -source "fs/Kconfig.binfmt" - -config IA32_EMULATION - bool "IA32 Emulation" - help - Include code to run 32-bit programs under a 64-bit kernel. You should - likely turn this on, unless you're 100% sure that you don't have any - 32-bit programs left. - -config IA32_AOUT - tristate "IA32 a.out support" - depends on IA32_EMULATION - help - Support old a.out binaries in the 32bit emulation. - -config COMPAT - bool - depends on IA32_EMULATION - default y - -config COMPAT_FOR_U64_ALIGNMENT - def_bool COMPAT - -config SYSVIPC_COMPAT - bool - depends on COMPAT && SYSVIPC - default y - -endmenu - -source "net/Kconfig" - -source drivers/Kconfig - -source "drivers/firmware/Kconfig" - -source fs/Kconfig - -source "kernel/Kconfig.instrumentation" - -source "arch/x86/Kconfig.debug" - -source "security/Kconfig" - -source "crypto/Kconfig" - -source "lib/Kconfig" diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile index 3c9db073571c..59594126e8b6 100644 --- a/scripts/kconfig/Makefile +++ b/scripts/kconfig/Makefile @@ -4,7 +4,12 @@ PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config -Kconfig := arch/$(ARCH)/Kconfig +# If a arch/$(SRCARCH)/Kconfig.$(ARCH) file exist use it +ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/Kconfig.$(ARCH)),) + Kconfig := arch/$(SRCARCH)/Kconfig.$(ARCH) +else + Kconfig := arch/$(SRCARCH)/Kconfig +endif xconfig: $(obj)/qconf $< $(Kconfig)