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 HAVE_IDE
  16         select HAVE_OPROFILE
  17         select HAVE_ARCH_KGDB if !SMP || SPARC64
  18         select HAVE_ARCH_TRACEHOOK
  19         select ARCH_WANT_OPTIONAL_GPIOLIB
  20         select RTC_CLASS
  21         select RTC_DRV_M48T59
  22         select HAVE_PERF_EVENTS
  23         select PERF_USE_VMALLOC
  24         select HAVE_DMA_ATTRS
  25         select HAVE_DMA_API_DEBUG
  26
  27 config SPARC32
  28         def_bool !64BIT
  29
  30 config SPARC64
  31         def_bool 64BIT
  32         select ARCH_SUPPORTS_MSI
  33         select HAVE_FUNCTION_TRACER
  34         select HAVE_FUNCTION_GRAPH_TRACER
  35         select HAVE_FUNCTION_GRAPH_FP_TEST
  36         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  37         select HAVE_KRETPROBES
  38         select HAVE_KPROBES
  39         select HAVE_MEMBLOCK
  40         select HAVE_SYSCALL_WRAPPERS
  41         select HAVE_DYNAMIC_FTRACE
  42         select HAVE_FTRACE_MCOUNT_RECORD
  43         select HAVE_SYSCALL_TRACEPOINTS
  44         select USE_GENERIC_SMP_HELPERS if SMP
  45         select RTC_DRV_CMOS
  46         select RTC_DRV_BQ4802
  47         select RTC_DRV_SUN4V
  48         select RTC_DRV_STARFIRE
  49         select HAVE_PERF_EVENTS
  50         select PERF_USE_VMALLOC
  51
  52 config ARCH_DEFCONFIG
  53         string
  54         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  55         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  56
  57 # CONFIG_BITS can be used at source level to get 32/64 bits
  58 config BITS
  59         int
  60         default 32 if SPARC32
  61         default 64 if SPARC64
  62
  63 config GENERIC_TIME
  64         def_bool y
  65
  66 config ARCH_USES_GETTIMEOFFSET
  67         bool
  68         default y if SPARC32
  69
  70 config GENERIC_CMOS_UPDATE
  71         bool
  72         default y
  73
  74 config GENERIC_CLOCKEVENTS
  75         bool
  76         default y if SPARC64
  77
  78 config IOMMU_HELPER
  79         bool
  80         default y if SPARC64
  81
  82 config QUICKLIST
  83         bool
  84         default y if SPARC64
  85
  86 config STACKTRACE_SUPPORT
  87         bool
  88         default y if SPARC64
  89
  90 config LOCKDEP_SUPPORT
  91         bool
  92         default y if SPARC64
  93
  94 config HAVE_LATENCYTOP_SUPPORT
  95         bool
  96         default y if SPARC64
  97
  98 config AUDIT_ARCH
  99         bool
 100         default y
 101
 102 config HAVE_SETUP_PER_CPU_AREA
 103         def_bool y if SPARC64
 104
 105 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 106         def_bool y if SPARC64
 107
 108 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 109         def_bool y if SPARC64
 110
 111 config GENERIC_HARDIRQS_NO__DO_IRQ
 112         bool
 113         def_bool y if SPARC64
 114
 115 config MMU
 116         bool
 117         default y
 118
 119 config HIGHMEM
 120         bool
 121         default y if SPARC32
 122
 123 config ZONE_DMA
 124         bool
 125         default y if SPARC32
 126
 127 config NEED_DMA_MAP_STATE
 128         def_bool y
 129
 130 config NEED_SG_DMA_LENGTH
 131         def_bool y
 132
 133 config GENERIC_ISA_DMA
 134         bool
 135         default y if SPARC32
 136
 137 config GENERIC_GPIO
 138         bool
 139         help
 140           Generic GPIO API support
 141
 142 config ARCH_NO_VIRT_TO_BUS
 143         def_bool y
 144
 145 config OF
 146         def_bool y
 147
 148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 149         def_bool y if SPARC64
 150
 151 source "init/Kconfig"
 152
 153 source "kernel/Kconfig.freezer"
 154
 155 menu "Processor type and features"
 156
 157 config SMP
 158         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 159         ---help---
 160           This enables support for systems with more than one CPU. If you have
 161           a system with only one CPU, say N. If you have a system with more
 162           than one CPU, say Y.
 163
 164           If you say N here, the kernel will run on single and multiprocessor
 165           machines, but will use only one CPU of a multiprocessor machine. If
 166           you say Y here, the kernel will run on many, but not all,
 167           singleprocessor machines. On a singleprocessor machine, the kernel
 168           will run faster if you say N here.
 169
 170           People using multiprocessor machines who say Y here should also say
 171           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 172           Management" code will be disabled if you say Y here.
 173
 174           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 175           available at <http://www.tldp.org/docs.html#howto>.
 176
 177           If you don't know what to do here, say N.
 178
 179 config NR_CPUS
 180         int "Maximum number of CPUs"
 181         depends on SMP
 182         range 2 32 if SPARC32
 183         range 2 1024 if SPARC64
 184         default 32 if SPARC32
 185         default 64 if SPARC64
 186
 187 source kernel/Kconfig.hz
 188
 189 config RWSEM_GENERIC_SPINLOCK
 190         bool
 191         default y if SPARC32
 192
 193 config RWSEM_XCHGADD_ALGORITHM
 194         bool
 195         default y if SPARC64
 196
 197 config GENERIC_FIND_NEXT_BIT
 198         bool
 199         default y
 200
 201 config GENERIC_HWEIGHT
 202         bool
 203         default y if !ULTRA_HAS_POPULATION_COUNT
 204
 205 config GENERIC_CALIBRATE_DELAY
 206         bool
 207         default y
 208
 209 config ARCH_MAY_HAVE_PC_FDC
 210         bool
 211         default y
 212
 213 config EMULATED_CMPXCHG
 214         bool
 215         default y if SPARC32
 216         help
 217           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 218           is emulated, and therefore it is not completely atomic.
 219
 220 # Makefile helpers
 221 config SPARC32_SMP
 222         bool
 223         default y
 224         depends on SPARC32 && SMP
 225
 226 config SPARC64_SMP
 227         bool
 228         default y
 229         depends on SPARC64 && SMP
 230
 231 config EARLYFB
 232         bool "Support for early boot text console"
 233         default y
 234         depends on SPARC64
 235         help
 236           Say Y here to enable a faster early framebuffer boot console.
 237
 238 choice
 239         prompt "Kernel page size" if SPARC64
 240         default SPARC64_PAGE_SIZE_8KB
 241
 242 config SPARC64_PAGE_SIZE_8KB
 243         bool "8KB"
 244         help
 245           This lets you select the page size of the kernel.
 246
 247           8KB and 64KB work quite well, since SPARC ELF sections
 248           provide for up to 64KB alignment.
 249
 250           If you don't know what to do, choose 8KB.
 251
 252 config SPARC64_PAGE_SIZE_64KB
 253         bool "64KB"
 254
 255 endchoice
 256
 257 config SECCOMP
 258         bool "Enable seccomp to safely compute untrusted bytecode"
 259         depends on SPARC64 && PROC_FS
 260         default y
 261         help
 262           This kernel feature is useful for number crunching applications
 263           that may need to compute untrusted bytecode during their
 264           execution. By using pipes or other transports made available to
 265           the process as file descriptors supporting the read/write
 266           syscalls, it's possible to isolate those applications in
 267           their own address space using seccomp. Once seccomp is
 268           enabled via /proc/<pid>/seccomp, it cannot be disabled
 269           and the task is only allowed to execute a few safe syscalls
 270           defined by each seccomp mode.
 271
 272           If unsure, say Y. Only embedded should say N here.
 273
 274 config HOTPLUG_CPU
 275         bool "Support for hot-pluggable CPUs"
 276         depends on SPARC64 && SMP
 277         select HOTPLUG
 278         help
 279           Say Y here to experiment with turning CPUs off and on.  CPUs
 280           can be controlled through /sys/devices/system/cpu/cpu#.
 281           Say N if you want to disable CPU hotplug.
 282
 283 config GENERIC_HARDIRQS
 284         bool
 285         default y if SPARC64
 286
 287 source "kernel/time/Kconfig"
 288
 289 if SPARC64
 290 source "drivers/cpufreq/Kconfig"
 291
 292 config US3_FREQ
 293         tristate "UltraSPARC-III CPU Frequency driver"
 294         depends on CPU_FREQ
 295         select CPU_FREQ_TABLE
 296         help
 297           This adds the CPUFreq driver for UltraSPARC-III processors.
 298
 299           For details, take a look at <file:Documentation/cpu-freq>.
 300
 301           If in doubt, say N.
 302
 303 config US2E_FREQ
 304         tristate "UltraSPARC-IIe CPU Frequency driver"
 305         depends on CPU_FREQ
 306         select CPU_FREQ_TABLE
 307         help
 308           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 309
 310           For details, take a look at <file:Documentation/cpu-freq>.
 311
 312           If in doubt, say N.
 313
 314 endif
 315
 316 config US3_MC
 317         tristate "UltraSPARC-III Memory Controller driver"
 318         depends on SPARC64
 319         default y
 320         help
 321           This adds a driver for the UltraSPARC-III memory controller.
 322           Loading this driver allows exact mnemonic strings to be
 323           printed in the event of a memory error, so that the faulty DIMM
 324           on the motherboard can be matched to the error.
 325
 326           If in doubt, say Y, as this information can be very useful.
 327
 328 # Global things across all Sun machines.
 329 config GENERIC_LOCKBREAK
 330         bool
 331         default y
 332         depends on SPARC64 && SMP && PREEMPT
 333
 334 choice
 335         prompt "SPARC64 Huge TLB Page Size"
 336         depends on SPARC64 && HUGETLB_PAGE
 337         default HUGETLB_PAGE_SIZE_4MB
 338
 339 config HUGETLB_PAGE_SIZE_4MB
 340         bool "4MB"
 341
 342 config HUGETLB_PAGE_SIZE_512K
 343         bool "512K"
 344
 345 config HUGETLB_PAGE_SIZE_64K
 346         depends on !SPARC64_PAGE_SIZE_64KB
 347         bool "64K"
 348
 349 endchoice
 350
 351 config NUMA
 352         bool "NUMA support"
 353         depends on SPARC64 && SMP
 354
 355 config NODES_SHIFT
 356         int
 357         default "4"
 358         depends on NEED_MULTIPLE_NODES
 359
 360 # Some NUMA nodes have memory ranges that span
 361 # other nodes.  Even though a pfn is valid and
 362 # between a node's start and end pfns, it may not
 363 # reside on that node.  See memmap_init_zone()
 364 # for details.
 365 config NODES_SPAN_OTHER_NODES
 366         def_bool y
 367         depends on NEED_MULTIPLE_NODES
 368
 369 config ARCH_POPULATES_NODE_MAP
 370         def_bool y if SPARC64
 371
 372 config ARCH_SELECT_MEMORY_MODEL
 373         def_bool y if SPARC64
 374
 375 config ARCH_SPARSEMEM_ENABLE
 376         def_bool y if SPARC64
 377         select SPARSEMEM_VMEMMAP_ENABLE
 378
 379 config ARCH_SPARSEMEM_DEFAULT
 380         def_bool y if SPARC64
 381
 382 source "mm/Kconfig"
 383
 384 config SCHED_SMT
 385         bool "SMT (Hyperthreading) scheduler support"
 386         depends on SPARC64 && SMP
 387         default y
 388         help
 389           SMT scheduler support improves the CPU scheduler's decision making
 390           when dealing with SPARC cpus at a cost of slightly increased overhead
 391           in some places. If unsure say N here.
 392
 393 config SCHED_MC
 394         bool "Multi-core scheduler support"
 395         depends on SPARC64 && SMP
 396         default y
 397         help
 398           Multi-core scheduler support improves the CPU scheduler's decision
 399           making when dealing with multi-core CPU chips at a cost of slightly
 400           increased overhead in some places. If unsure say N here.
 401
 402 if SPARC64
 403 source "kernel/Kconfig.preempt"
 404 endif
 405
 406 config CMDLINE_BOOL
 407         bool "Default bootloader kernel arguments"
 408         depends on SPARC64
 409
 410 config CMDLINE
 411         string "Initial kernel command string"
 412         depends on CMDLINE_BOOL
 413         default "console=ttyS0,9600 root=/dev/sda1"
 414         help
 415           Say Y here if you want to be able to pass default arguments to
 416           the kernel. This will be overridden by the bootloader, if you
 417           use one (such as SILO). This is most useful if you want to boot
 418           a kernel from TFTP, and want default options to be available
 419           with having them passed on the command line.
 420
 421           NOTE: This option WILL override the PROM bootargs setting!
 422
 423 config SUN_PM
 424         bool
 425         default y if SPARC32
 426         help
 427           Enable power management and CPU standby features on supported
 428           SPARC platforms.
 429
 430 config SPARC_LED
 431         tristate "Sun4m LED driver"
 432         depends on SPARC32
 433         help
 434           This driver toggles the front-panel LED on sun4m systems
 435           in a user-specifiable manner.  Its state can be probed
 436           by reading /proc/led and its blinking mode can be changed
 437           via writes to /proc/led
 438
 439 config SERIAL_CONSOLE
 440         bool
 441         depends on SPARC32
 442         default y
 443         ---help---
 444           If you say Y here, it will be possible to use a serial port as the
 445           system console (the system console is the device which receives all
 446           kernel messages and warnings and which allows logins in single user
 447           mode). This could be useful if some terminal or printer is connected
 448           to that serial port.
 449
 450           Even if you say Y here, the currently visible virtual console
 451           (/dev/tty0) will still be used as the system console by default, but
 452           you can alter that using a kernel command line option such as
 453           "console=ttyS1". (Try "man bootparam" or see the documentation of
 454           your boot loader (silo) about how to pass options to the kernel at
 455           boot time.)
 456
 457           If you don't have a graphics card installed and you say Y here, the
 458           kernel will automatically use the first serial line, /dev/ttyS0, as
 459           system console.
 460
 461           If unsure, say N.
 462
 463 config SPARC_LEON
 464         bool "Sparc Leon processor family"
 465         depends on SPARC32
 466         ---help---
 467           If you say Y here if you are running on a SPARC-LEON processor.
 468           The LEON processor is a synthesizable VHDL model of the
 469           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 470           IP cores that are distributed under GPL. GRLIB can be downloaded
 471           from www.gaisler.com. You can download a sparc-linux cross-compilation
 472           toolchain at www.gaisler.com.
 473
 474 endmenu
 475
 476 menu "Bus options (PCI etc.)"
 477 config SBUS
 478         bool
 479         default y
 480
 481 config SBUSCHAR
 482         bool
 483         default y
 484
 485 config SUN_LDOMS
 486         bool "Sun Logical Domains support"
 487         depends on SPARC64
 488         help
 489           Say Y here is you want to support virtual devices via
 490           Logical Domains.
 491
 492 config PCI
 493         bool "Support for PCI and PS/2 keyboard/mouse"
 494         help
 495           Find out whether your system includes a PCI bus. PCI is the name of
 496           a bus system, i.e. the way the CPU talks to the other stuff inside
 497           your box.  If you say Y here, the kernel will include drivers and
 498           infrastructure code to support PCI bus devices.
 499
 500           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 501           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 502           All of these platforms are extremely obscure, so say N if unsure.
 503
 504 config PCI_DOMAINS
 505         def_bool PCI if SPARC64
 506
 507 config PCI_SYSCALL
 508         def_bool PCI
 509
 510 source "drivers/pci/Kconfig"
 511
 512 source "drivers/pcmcia/Kconfig"
 513
 514 config SUN_OPENPROMFS
 515         tristate "Openprom tree appears in /proc/openprom"
 516         help
 517           If you say Y, the OpenPROM device tree will be available as a
 518           virtual file system, which you can mount to /proc/openprom by "mount
 519           -t openpromfs none /proc/openprom".
 520
 521           To compile the /proc/openprom support as a module, choose M here: the
 522           module will be called openpromfs.
 523
 524           Only choose N if you know in advance that you will not need to modify
 525           OpenPROM settings on the running system.
 526
 527 # Makefile helpers
 528 config SPARC32_PCI
 529         bool
 530         default y
 531         depends on SPARC32 && PCI
 532
 533 config SPARC64_PCI
 534         bool
 535         default y
 536         depends on SPARC64 && PCI
 537
 538 endmenu
 539
 540 menu "Executable file formats"
 541
 542 source "fs/Kconfig.binfmt"
 543
 544 config COMPAT
 545         bool
 546         depends on SPARC64
 547         default y
 548         select COMPAT_BINFMT_ELF
 549
 550 config SYSVIPC_COMPAT
 551         bool
 552         depends on COMPAT && SYSVIPC
 553         default y
 554
 555 endmenu
 556
 557 source "net/Kconfig"
 558
 559 source "drivers/Kconfig"
 560
 561 source "drivers/sbus/char/Kconfig"
 562
 563 source "fs/Kconfig"
 564
 565 source "arch/sparc/Kconfig.debug"
 566
 567 source "security/Kconfig"
 568
 569 source "crypto/Kconfig"
 570
 571 source "lib/Kconfig"