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