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