arch/sparc/Kconfig

   1 config 64BIT
   2         bool "64-bit kernel" if ARCH = "sparc"
   3         default ARCH = "sparc64"
   4         help
   5           SPARC is a family of RISC microprocessors designed and marketed by
   6           Sun Microsystems, incorporated.  They are very widely found in Sun
   7           workstations and clones.
   8
   9           Say yes to build a 64-bit kernel - formerly known as sparc64
  10           Say no to build a 32-bit kernel - formerly known as sparc
  11
  12 config SPARC
  13         bool
  14         default y
  15         select OF
  16         select OF_PROMTREE
  17         select HAVE_IDE
  18         select HAVE_OPROFILE
  19         select HAVE_ARCH_KGDB if !SMP || SPARC64
  20         select HAVE_ARCH_TRACEHOOK
  21         select SYSCTL_EXCEPTION_TRACE
  22         select ARCH_WANT_OPTIONAL_GPIOLIB
  23         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  24         select RTC_CLASS
  25         select RTC_DRV_M48T59
  26         select HAVE_DMA_ATTRS
  27         select HAVE_DMA_API_DEBUG
  28         select HAVE_ARCH_JUMP_LABEL
  29         select HAVE_GENERIC_HARDIRQS
  30         select GENERIC_IRQ_SHOW
  31         select ARCH_WANT_IPC_PARSE_VERSION
  32         select USE_GENERIC_SMP_HELPERS if SMP
  33         select GENERIC_PCI_IOMAP
  34         select HAVE_NMI_WATCHDOG if SPARC64
  35         select HAVE_BPF_JIT
  36         select HAVE_DEBUG_BUGVERBOSE
  37         select GENERIC_SMP_IDLE_THREAD
  38         select GENERIC_CMOS_UPDATE
  39         select GENERIC_CLOCKEVENTS
  40         select GENERIC_STRNCPY_FROM_USER
  41         select GENERIC_STRNLEN_USER
  42         select MODULES_USE_ELF_RELA
  43         select ODD_RT_SIGACTION
  44         select OLD_SIGSUSPEND
  45
  46 config SPARC32
  47         def_bool !64BIT
  48         select GENERIC_ATOMIC64
  49         select CLZ_TAB
  50         select HAVE_UID16
  51         select OLD_SIGACTION
  52
  53 config SPARC64
  54         def_bool 64BIT
  55         select ARCH_SUPPORTS_MSI
  56         select HAVE_FUNCTION_TRACER
  57         select HAVE_FUNCTION_GRAPH_TRACER
  58         select HAVE_FUNCTION_GRAPH_FP_TEST
  59         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  60         select HAVE_KRETPROBES
  61         select HAVE_KPROBES
  62         select HAVE_RCU_TABLE_FREE if SMP
  63         select HAVE_MEMBLOCK
  64         select HAVE_MEMBLOCK_NODE_MAP
  65         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  66         select HAVE_DYNAMIC_FTRACE
  67         select HAVE_FTRACE_MCOUNT_RECORD
  68         select HAVE_SYSCALL_TRACEPOINTS
  69         select HAVE_DEBUG_KMEMLEAK
  70         select RTC_DRV_CMOS
  71         select RTC_DRV_BQ4802
  72         select RTC_DRV_SUN4V
  73         select RTC_DRV_STARFIRE
  74         select HAVE_PERF_EVENTS
  75         select PERF_USE_VMALLOC
  76         select IRQ_PREFLOW_FASTEOI
  77         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  78         select HAVE_C_RECORDMCOUNT
  79         select NO_BOOTMEM
  80
  81 config ARCH_DEFCONFIG
  82         string
  83         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  84         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  85
  86 config IOMMU_HELPER
  87         bool
  88         default y if SPARC64
  89
  90 config STACKTRACE_SUPPORT
  91         bool
  92         default y if SPARC64
  93
  94 config LOCKDEP_SUPPORT
  95         bool
  96         default y if SPARC64
  97
  98 config HAVE_LATENCYTOP_SUPPORT
  99         bool
 100         default y if SPARC64
 101
 102 config ARCH_HIBERNATION_POSSIBLE
 103         def_bool y if SPARC64
 104
 105 config AUDIT_ARCH
 106         bool
 107         default y
 108
 109 config HAVE_SETUP_PER_CPU_AREA
 110         def_bool y if SPARC64
 111
 112 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config MMU
 119         bool
 120         default y
 121
 122 config HIGHMEM
 123         bool
 124         default y if SPARC32
 125
 126 config ZONE_DMA
 127         bool
 128         default y if SPARC32
 129
 130 config NEED_DMA_MAP_STATE
 131         def_bool y
 132
 133 config NEED_SG_DMA_LENGTH
 134         def_bool y
 135
 136 config GENERIC_ISA_DMA
 137         bool
 138         default y if SPARC32
 139
 140 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 141         def_bool y if SPARC64
 142
 143 source "init/Kconfig"
 144
 145 source "kernel/Kconfig.freezer"
 146
 147 menu "Processor type and features"
 148
 149 config SMP
 150         bool "Symmetric multi-processing support"
 151         ---help---
 152           This enables support for systems with more than one CPU. If you have
 153           a system with only one CPU, say N. If you have a system with more
 154           than one CPU, say Y.
 155
 156           If you say N here, the kernel will run on single and multiprocessor
 157           machines, but will use only one CPU of a multiprocessor machine. If
 158           you say Y here, the kernel will run on many, but not all,
 159           singleprocessor machines. On a singleprocessor machine, the kernel
 160           will run faster if you say N here.
 161
 162           People using multiprocessor machines who say Y here should also say
 163           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 164           Management" code will be disabled if you say Y here.
 165
 166           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 167           available at <http://www.tldp.org/docs.html#howto>.
 168
 169           If you don't know what to do here, say N.
 170
 171 config NR_CPUS
 172         int "Maximum number of CPUs"
 173         depends on SMP
 174         range 2 32 if SPARC32
 175         range 2 1024 if SPARC64
 176         default 32 if SPARC32
 177         default 64 if SPARC64
 178
 179 source kernel/Kconfig.hz
 180
 181 config RWSEM_GENERIC_SPINLOCK
 182         bool
 183         default y if SPARC32
 184
 185 config RWSEM_XCHGADD_ALGORITHM
 186         bool
 187         default y if SPARC64
 188
 189 config GENERIC_HWEIGHT
 190         bool
 191         default y
 192
 193 config GENERIC_CALIBRATE_DELAY
 194         bool
 195         default y
 196
 197 config ARCH_MAY_HAVE_PC_FDC
 198         bool
 199         default y
 200
 201 config EMULATED_CMPXCHG
 202         bool
 203         default y if SPARC32
 204         help
 205           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 206           is emulated, and therefore it is not completely atomic.
 207
 208 # Makefile helpers
 209 config SPARC32_SMP
 210         bool
 211         default y
 212         depends on SPARC32 && SMP
 213
 214 config SPARC64_SMP
 215         bool
 216         default y
 217         depends on SPARC64 && SMP
 218
 219 config EARLYFB
 220         bool "Support for early boot text console"
 221         default y
 222         depends on SPARC64
 223         help
 224           Say Y here to enable a faster early framebuffer boot console.
 225
 226 config SECCOMP
 227         bool "Enable seccomp to safely compute untrusted bytecode"
 228         depends on SPARC64 && PROC_FS
 229         default y
 230         help
 231           This kernel feature is useful for number crunching applications
 232           that may need to compute untrusted bytecode during their
 233           execution. By using pipes or other transports made available to
 234           the process as file descriptors supporting the read/write
 235           syscalls, it's possible to isolate those applications in
 236           their own address space using seccomp. Once seccomp is
 237           enabled via /proc/<pid>/seccomp, it cannot be disabled
 238           and the task is only allowed to execute a few safe syscalls
 239           defined by each seccomp mode.
 240
 241           If unsure, say Y. Only embedded should say N here.
 242
 243 config HOTPLUG_CPU
 244         bool "Support for hot-pluggable CPUs"
 245         depends on SPARC64 && SMP
 246         select HOTPLUG
 247         help
 248           Say Y here to experiment with turning CPUs off and on.  CPUs
 249           can be controlled through /sys/devices/system/cpu/cpu#.
 250           Say N if you want to disable CPU hotplug.
 251
 252 if SPARC64
 253 source "drivers/cpufreq/Kconfig"
 254 endif
 255
 256 config US3_MC
 257         tristate "UltraSPARC-III Memory Controller driver"
 258         depends on SPARC64
 259         default y
 260         help
 261           This adds a driver for the UltraSPARC-III memory controller.
 262           Loading this driver allows exact mnemonic strings to be
 263           printed in the event of a memory error, so that the faulty DIMM
 264           on the motherboard can be matched to the error.
 265
 266           If in doubt, say Y, as this information can be very useful.
 267
 268 # Global things across all Sun machines.
 269 config GENERIC_LOCKBREAK
 270         bool
 271         default y
 272         depends on SPARC64 && SMP && PREEMPT
 273
 274 config NUMA
 275         bool "NUMA support"
 276         depends on SPARC64 && SMP
 277
 278 config NODES_SHIFT
 279         int
 280         default "4"
 281         depends on NEED_MULTIPLE_NODES
 282
 283 # Some NUMA nodes have memory ranges that span
 284 # other nodes.  Even though a pfn is valid and
 285 # between a node's start and end pfns, it may not
 286 # reside on that node.  See memmap_init_zone()
 287 # for details.
 288 config NODES_SPAN_OTHER_NODES
 289         def_bool y
 290         depends on NEED_MULTIPLE_NODES
 291
 292 config ARCH_SELECT_MEMORY_MODEL
 293         def_bool y if SPARC64
 294
 295 config ARCH_SPARSEMEM_ENABLE
 296         def_bool y if SPARC64
 297         select SPARSEMEM_VMEMMAP_ENABLE
 298
 299 config ARCH_SPARSEMEM_DEFAULT
 300         def_bool y if SPARC64
 301
 302 source "mm/Kconfig"
 303
 304 if SPARC64
 305 source "kernel/power/Kconfig"
 306 endif
 307
 308 config SCHED_SMT
 309         bool "SMT (Hyperthreading) scheduler support"
 310         depends on SPARC64 && SMP
 311         default y
 312         help
 313           SMT scheduler support improves the CPU scheduler's decision making
 314           when dealing with SPARC cpus at a cost of slightly increased overhead
 315           in some places. If unsure say N here.
 316
 317 config SCHED_MC
 318         bool "Multi-core scheduler support"
 319         depends on SPARC64 && SMP
 320         default y
 321         help
 322           Multi-core scheduler support improves the CPU scheduler's decision
 323           making when dealing with multi-core CPU chips at a cost of slightly
 324           increased overhead in some places. If unsure say N here.
 325
 326 source "kernel/Kconfig.preempt"
 327
 328 config CMDLINE_BOOL
 329         bool "Default bootloader kernel arguments"
 330         depends on SPARC64
 331
 332 config CMDLINE
 333         string "Initial kernel command string"
 334         depends on CMDLINE_BOOL
 335         default "console=ttyS0,9600 root=/dev/sda1"
 336         help
 337           Say Y here if you want to be able to pass default arguments to
 338           the kernel. This will be overridden by the bootloader, if you
 339           use one (such as SILO). This is most useful if you want to boot
 340           a kernel from TFTP, and want default options to be available
 341           with having them passed on the command line.
 342
 343           NOTE: This option WILL override the PROM bootargs setting!
 344
 345 config SUN_PM
 346         bool
 347         default y if SPARC32
 348         help
 349           Enable power management and CPU standby features on supported
 350           SPARC platforms.
 351
 352 config SPARC_LED
 353         tristate "Sun4m LED driver"
 354         depends on SPARC32
 355         help
 356           This driver toggles the front-panel LED on sun4m systems
 357           in a user-specifiable manner.  Its state can be probed
 358           by reading /proc/led and its blinking mode can be changed
 359           via writes to /proc/led
 360
 361 config SERIAL_CONSOLE
 362         bool
 363         depends on SPARC32
 364         default y
 365         ---help---
 366           If you say Y here, it will be possible to use a serial port as the
 367           system console (the system console is the device which receives all
 368           kernel messages and warnings and which allows logins in single user
 369           mode). This could be useful if some terminal or printer is connected
 370           to that serial port.
 371
 372           Even if you say Y here, the currently visible virtual console
 373           (/dev/tty0) will still be used as the system console by default, but
 374           you can alter that using a kernel command line option such as
 375           "console=ttyS1". (Try "man bootparam" or see the documentation of
 376           your boot loader (silo) about how to pass options to the kernel at
 377           boot time.)
 378
 379           If you don't have a graphics card installed and you say Y here, the
 380           kernel will automatically use the first serial line, /dev/ttyS0, as
 381           system console.
 382
 383           If unsure, say N.
 384
 385 config SPARC_LEON
 386         bool "Sparc Leon processor family"
 387         depends on SPARC32
 388         select USB_EHCI_BIG_ENDIAN_MMIO
 389         select USB_EHCI_BIG_ENDIAN_DESC
 390         ---help---
 391           If you say Y here if you are running on a SPARC-LEON processor.
 392           The LEON processor is a synthesizable VHDL model of the
 393           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 394           IP cores that are distributed under GPL. GRLIB can be downloaded
 395           from www.gaisler.com. You can download a sparc-linux cross-compilation
 396           toolchain at www.gaisler.com.
 397
 398 if SPARC_LEON
 399 menu "U-Boot options"
 400
 401 config UBOOT_LOAD_ADDR
 402         hex "uImage Load Address"
 403         default 0x40004000
 404         ---help---
 405          U-Boot kernel load address, the address in physical address space
 406          where u-boot will place the Linux kernel before booting it.
 407          This address is normally the base address of main memory + 0x4000.
 408
 409 config UBOOT_FLASH_ADDR
 410         hex "uImage.o Load Address"
 411         default 0x00080000
 412         ---help---
 413          Optional setting only affecting the uImage.o ELF-image used to
 414          download the uImage file to the target using a ELF-loader other than
 415          U-Boot. It may for example be used to download an uImage to FLASH with
 416          the GRMON utility before even starting u-boot.
 417
 418 config UBOOT_ENTRY_ADDR
 419         hex "uImage Entry Address"
 420         default 0xf0004000
 421         ---help---
 422          Do not change this unless you know what you're doing. This is
 423          hardcoded by the SPARC32 and LEON port.
 424
 425          This is the virtual address u-boot jumps to when booting the Linux
 426          Kernel.
 427
 428 endmenu
 429 endif
 430
 431 endmenu
 432
 433 menu "Bus options (PCI etc.)"
 434 config SBUS
 435         bool
 436         default y
 437
 438 config SBUSCHAR
 439         bool
 440         default y
 441
 442 config SUN_LDOMS
 443         bool "Sun Logical Domains support"
 444         depends on SPARC64
 445         help
 446           Say Y here is you want to support virtual devices via
 447           Logical Domains.
 448
 449 config PCI
 450         bool "Support for PCI and PS/2 keyboard/mouse"
 451         help
 452           Find out whether your system includes a PCI bus. PCI is the name of
 453           a bus system, i.e. the way the CPU talks to the other stuff inside
 454           your box.  If you say Y here, the kernel will include drivers and
 455           infrastructure code to support PCI bus devices.
 456
 457           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 458           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 459           All of these platforms are extremely obscure, so say N if unsure.
 460
 461 config PCI_DOMAINS
 462         def_bool PCI if SPARC64
 463
 464 config PCI_SYSCALL
 465         def_bool PCI
 466
 467 config PCIC_PCI
 468         bool
 469         depends on PCI && SPARC32 && !SPARC_LEON
 470         default y
 471
 472 config LEON_PCI
 473         bool
 474         depends on PCI && SPARC_LEON
 475         default y
 476
 477 config SPARC_GRPCI1
 478         bool "GRPCI Host Bridge Support"
 479         depends on LEON_PCI
 480         default y
 481         help
 482           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 483           PCI host controller is typically found in GRLIB SPARC32/LEON
 484           systems. The driver has one property (all_pci_errors) controlled
 485           from the bootloader that makes the GRPCI to generate interrupts
 486           on detected PCI Parity and System errors.
 487
 488 config SPARC_GRPCI2
 489         bool "GRPCI2 Host Bridge Support"
 490         depends on LEON_PCI
 491         default y
 492         help
 493           Say Y here to include the GRPCI2 Host Bridge Driver.
 494
 495 source "drivers/pci/Kconfig"
 496
 497 source "drivers/pcmcia/Kconfig"
 498
 499 config SUN_OPENPROMFS
 500         tristate "Openprom tree appears in /proc/openprom"
 501         help
 502           If you say Y, the OpenPROM device tree will be available as a
 503           virtual file system, which you can mount to /proc/openprom by "mount
 504           -t openpromfs none /proc/openprom".
 505
 506           To compile the /proc/openprom support as a module, choose M here: the
 507           module will be called openpromfs.
 508
 509           Only choose N if you know in advance that you will not need to modify
 510           OpenPROM settings on the running system.
 511
 512 # Makefile helper
 513 config SPARC64_PCI
 514         bool
 515         default y
 516         depends on SPARC64 && PCI
 517
 518 endmenu
 519
 520 menu "Executable file formats"
 521
 522 source "fs/Kconfig.binfmt"
 523
 524 config COMPAT
 525         bool
 526         depends on SPARC64
 527         default y
 528         select COMPAT_BINFMT_ELF
 529         select HAVE_UID16
 530         select ARCH_WANT_OLD_COMPAT_IPC
 531         select COMPAT_OLD_SIGACTION
 532
 533 config SYSVIPC_COMPAT
 534         bool
 535         depends on COMPAT && SYSVIPC
 536         default y
 537
 538 config KEYS_COMPAT
 539         def_bool y if COMPAT && KEYS
 540
 541 endmenu
 542
 543 source "net/Kconfig"
 544
 545 source "drivers/Kconfig"
 546
 547 source "drivers/sbus/char/Kconfig"
 548
 549 source "fs/Kconfig"
 550
 551 source "arch/sparc/Kconfig.debug"
 552
 553 source "security/Kconfig"
 554
 555 source "crypto/Kconfig"
 556
 557 source "lib/Kconfig"