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