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         select HAVE_GENERIC_HARDIRQS
  29         select GENERIC_IRQ_SHOW
  30         select USE_GENERIC_SMP_HELPERS if SMP
  31
  32 config SPARC32
  33         def_bool !64BIT
  34
  35 config SPARC64
  36         def_bool 64BIT
  37         select ARCH_SUPPORTS_MSI
  38         select HAVE_FUNCTION_TRACER
  39         select HAVE_FUNCTION_GRAPH_TRACER
  40         select HAVE_FUNCTION_GRAPH_FP_TEST
  41         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  42         select HAVE_KRETPROBES
  43         select HAVE_KPROBES
  44         select HAVE_RCU_TABLE_FREE if SMP
  45         select HAVE_MEMBLOCK
  46         select HAVE_SYSCALL_WRAPPERS
  47         select HAVE_DYNAMIC_FTRACE
  48         select HAVE_FTRACE_MCOUNT_RECORD
  49         select HAVE_SYSCALL_TRACEPOINTS
  50         select RTC_DRV_CMOS
  51         select RTC_DRV_BQ4802
  52         select RTC_DRV_SUN4V
  53         select RTC_DRV_STARFIRE
  54         select HAVE_PERF_EVENTS
  55         select PERF_USE_VMALLOC
  56         select IRQ_PREFLOW_FASTEOI
  57         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  58
  59 config ARCH_DEFCONFIG
  60         string
  61         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  62         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  63
  64 # CONFIG_BITS can be used at source level to get 32/64 bits
  65 config BITS
  66         int
  67         default 32 if SPARC32
  68         default 64 if SPARC64
  69
  70 config ARCH_USES_GETTIMEOFFSET
  71         bool
  72         default y if SPARC32
  73
  74 config GENERIC_CMOS_UPDATE
  75         bool
  76         default y
  77
  78 config GENERIC_CLOCKEVENTS
  79         bool
  80         default y if SPARC64
  81
  82 config IOMMU_HELPER
  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_HWEIGHT
 191         bool
 192         default y if !ULTRA_HAS_POPULATION_COUNT
 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 choice
 228         prompt "Kernel page size" if SPARC64
 229         default SPARC64_PAGE_SIZE_8KB
 230
 231 config SPARC64_PAGE_SIZE_8KB
 232         bool "8KB"
 233         help
 234           This lets you select the page size of the kernel.
 235
 236           8KB and 64KB work quite well, since SPARC ELF sections
 237           provide for up to 64KB alignment.
 238
 239           If you don't know what to do, choose 8KB.
 240
 241 config SPARC64_PAGE_SIZE_64KB
 242         bool "64KB"
 243
 244 endchoice
 245
 246 config SECCOMP
 247         bool "Enable seccomp to safely compute untrusted bytecode"
 248         depends on SPARC64 && PROC_FS
 249         default y
 250         help
 251           This kernel feature is useful for number crunching applications
 252           that may need to compute untrusted bytecode during their
 253           execution. By using pipes or other transports made available to
 254           the process as file descriptors supporting the read/write
 255           syscalls, it's possible to isolate those applications in
 256           their own address space using seccomp. Once seccomp is
 257           enabled via /proc/<pid>/seccomp, it cannot be disabled
 258           and the task is only allowed to execute a few safe syscalls
 259           defined by each seccomp mode.
 260
 261           If unsure, say Y. Only embedded should say N here.
 262
 263 config HOTPLUG_CPU
 264         bool "Support for hot-pluggable CPUs"
 265         depends on SPARC64 && SMP
 266         select HOTPLUG
 267         help
 268           Say Y here to experiment with turning CPUs off and on.  CPUs
 269           can be controlled through /sys/devices/system/cpu/cpu#.
 270           Say N if you want to disable CPU hotplug.
 271
 272 source "kernel/time/Kconfig"
 273
 274 if SPARC64
 275 source "drivers/cpufreq/Kconfig"
 276
 277 config US3_FREQ
 278         tristate "UltraSPARC-III CPU Frequency driver"
 279         depends on CPU_FREQ
 280         select CPU_FREQ_TABLE
 281         help
 282           This adds the CPUFreq driver for UltraSPARC-III processors.
 283
 284           For details, take a look at <file:Documentation/cpu-freq>.
 285
 286           If in doubt, say N.
 287
 288 config US2E_FREQ
 289         tristate "UltraSPARC-IIe CPU Frequency driver"
 290         depends on CPU_FREQ
 291         select CPU_FREQ_TABLE
 292         help
 293           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 294
 295           For details, take a look at <file:Documentation/cpu-freq>.
 296
 297           If in doubt, say N.
 298
 299 endif
 300
 301 config US3_MC
 302         tristate "UltraSPARC-III Memory Controller driver"
 303         depends on SPARC64
 304         default y
 305         help
 306           This adds a driver for the UltraSPARC-III memory controller.
 307           Loading this driver allows exact mnemonic strings to be
 308           printed in the event of a memory error, so that the faulty DIMM
 309           on the motherboard can be matched to the error.
 310
 311           If in doubt, say Y, as this information can be very useful.
 312
 313 # Global things across all Sun machines.
 314 config GENERIC_LOCKBREAK
 315         bool
 316         default y
 317         depends on SPARC64 && SMP && PREEMPT
 318
 319 choice
 320         prompt "SPARC64 Huge TLB Page Size"
 321         depends on SPARC64 && HUGETLB_PAGE
 322         default HUGETLB_PAGE_SIZE_4MB
 323
 324 config HUGETLB_PAGE_SIZE_4MB
 325         bool "4MB"
 326
 327 config HUGETLB_PAGE_SIZE_512K
 328         bool "512K"
 329
 330 config HUGETLB_PAGE_SIZE_64K
 331         depends on !SPARC64_PAGE_SIZE_64KB
 332         bool "64K"
 333
 334 endchoice
 335
 336 config NUMA
 337         bool "NUMA support"
 338         depends on SPARC64 && SMP
 339
 340 config NODES_SHIFT
 341         int
 342         default "4"
 343         depends on NEED_MULTIPLE_NODES
 344
 345 # Some NUMA nodes have memory ranges that span
 346 # other nodes.  Even though a pfn is valid and
 347 # between a node's start and end pfns, it may not
 348 # reside on that node.  See memmap_init_zone()
 349 # for details.
 350 config NODES_SPAN_OTHER_NODES
 351         def_bool y
 352         depends on NEED_MULTIPLE_NODES
 353
 354 config ARCH_POPULATES_NODE_MAP
 355         def_bool y if SPARC64
 356
 357 config ARCH_SELECT_MEMORY_MODEL
 358         def_bool y if SPARC64
 359
 360 config ARCH_SPARSEMEM_ENABLE
 361         def_bool y if SPARC64
 362         select SPARSEMEM_VMEMMAP_ENABLE
 363
 364 config ARCH_SPARSEMEM_DEFAULT
 365         def_bool y if SPARC64
 366
 367 source "mm/Kconfig"
 368
 369 config SCHED_SMT
 370         bool "SMT (Hyperthreading) scheduler support"
 371         depends on SPARC64 && SMP
 372         default y
 373         help
 374           SMT scheduler support improves the CPU scheduler's decision making
 375           when dealing with SPARC cpus at a cost of slightly increased overhead
 376           in some places. If unsure say N here.
 377
 378 config SCHED_MC
 379         bool "Multi-core scheduler support"
 380         depends on SPARC64 && SMP
 381         default y
 382         help
 383           Multi-core scheduler support improves the CPU scheduler's decision
 384           making when dealing with multi-core CPU chips at a cost of slightly
 385           increased overhead in some places. If unsure say N here.
 386
 387 if SPARC64
 388 source "kernel/Kconfig.preempt"
 389 endif
 390
 391 config CMDLINE_BOOL
 392         bool "Default bootloader kernel arguments"
 393         depends on SPARC64
 394
 395 config CMDLINE
 396         string "Initial kernel command string"
 397         depends on CMDLINE_BOOL
 398         default "console=ttyS0,9600 root=/dev/sda1"
 399         help
 400           Say Y here if you want to be able to pass default arguments to
 401           the kernel. This will be overridden by the bootloader, if you
 402           use one (such as SILO). This is most useful if you want to boot
 403           a kernel from TFTP, and want default options to be available
 404           with having them passed on the command line.
 405
 406           NOTE: This option WILL override the PROM bootargs setting!
 407
 408 config SUN_PM
 409         bool
 410         default y if SPARC32
 411         help
 412           Enable power management and CPU standby features on supported
 413           SPARC platforms.
 414
 415 config SPARC_LED
 416         tristate "Sun4m LED driver"
 417         depends on SPARC32
 418         help
 419           This driver toggles the front-panel LED on sun4m systems
 420           in a user-specifiable manner.  Its state can be probed
 421           by reading /proc/led and its blinking mode can be changed
 422           via writes to /proc/led
 423
 424 config SERIAL_CONSOLE
 425         bool
 426         depends on SPARC32
 427         default y
 428         ---help---
 429           If you say Y here, it will be possible to use a serial port as the
 430           system console (the system console is the device which receives all
 431           kernel messages and warnings and which allows logins in single user
 432           mode). This could be useful if some terminal or printer is connected
 433           to that serial port.
 434
 435           Even if you say Y here, the currently visible virtual console
 436           (/dev/tty0) will still be used as the system console by default, but
 437           you can alter that using a kernel command line option such as
 438           "console=ttyS1". (Try "man bootparam" or see the documentation of
 439           your boot loader (silo) about how to pass options to the kernel at
 440           boot time.)
 441
 442           If you don't have a graphics card installed and you say Y here, the
 443           kernel will automatically use the first serial line, /dev/ttyS0, as
 444           system console.
 445
 446           If unsure, say N.
 447
 448 config SPARC_LEON
 449         bool "Sparc Leon processor family"
 450         depends on SPARC32
 451         ---help---
 452           If you say Y here if you are running on a SPARC-LEON processor.
 453           The LEON processor is a synthesizable VHDL model of the
 454           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 455           IP cores that are distributed under GPL. GRLIB can be downloaded
 456           from www.gaisler.com. You can download a sparc-linux cross-compilation
 457           toolchain at www.gaisler.com.
 458
 459 if SPARC_LEON
 460 menu "U-Boot options"
 461
 462 config UBOOT_LOAD_ADDR
 463         hex "uImage Load Address"
 464         default 0x40004000
 465         ---help---
 466          U-Boot kernel load address, the address in physical address space
 467          where u-boot will place the Linux kernel before booting it.
 468          This address is normally the base address of main memory + 0x4000.
 469
 470 config UBOOT_FLASH_ADDR
 471         hex "uImage.o Load Address"
 472         default 0x00080000
 473         ---help---
 474          Optional setting only affecting the uImage.o ELF-image used to
 475          download the uImage file to the target using a ELF-loader other than
 476          U-Boot. It may for example be used to download an uImage to FLASH with
 477          the GRMON utility before even starting u-boot.
 478
 479 config UBOOT_ENTRY_ADDR
 480         hex "uImage Entry Address"
 481         default 0xf0004000
 482         ---help---
 483          Do not change this unless you know what you're doing. This is
 484          hardcoded by the SPARC32 and LEON port.
 485
 486          This is the virtual address u-boot jumps to when booting the Linux
 487          Kernel.
 488
 489 endmenu
 490 endif
 491
 492 endmenu
 493
 494 menu "Bus options (PCI etc.)"
 495 config SBUS
 496         bool
 497         default y
 498
 499 config SBUSCHAR
 500         bool
 501         default y
 502
 503 config SUN_LDOMS
 504         bool "Sun Logical Domains support"
 505         depends on SPARC64
 506         help
 507           Say Y here is you want to support virtual devices via
 508           Logical Domains.
 509
 510 config PCI
 511         bool "Support for PCI and PS/2 keyboard/mouse"
 512         help
 513           Find out whether your system includes a PCI bus. PCI is the name of
 514           a bus system, i.e. the way the CPU talks to the other stuff inside
 515           your box.  If you say Y here, the kernel will include drivers and
 516           infrastructure code to support PCI bus devices.
 517
 518           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 519           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 520           All of these platforms are extremely obscure, so say N if unsure.
 521
 522 config PCI_DOMAINS
 523         def_bool PCI if SPARC64
 524
 525 config PCI_SYSCALL
 526         def_bool PCI
 527
 528 config PCIC_PCI
 529         bool
 530         depends on PCI && SPARC32 && !SPARC_LEON
 531         default y
 532
 533 config LEON_PCI
 534         bool
 535         depends on PCI && SPARC_LEON
 536         default y
 537
 538 config GRPCI2
 539         bool "GRPCI2 Host Bridge Support"
 540         depends on LEON_PCI
 541         default y
 542         help
 543           Say Y here to include the GRPCI2 Host Bridge Driver.
 544
 545 source "drivers/pci/Kconfig"
 546
 547 source "drivers/pcmcia/Kconfig"
 548
 549 config SUN_OPENPROMFS
 550         tristate "Openprom tree appears in /proc/openprom"
 551         help
 552           If you say Y, the OpenPROM device tree will be available as a
 553           virtual file system, which you can mount to /proc/openprom by "mount
 554           -t openpromfs none /proc/openprom".
 555
 556           To compile the /proc/openprom support as a module, choose M here: the
 557           module will be called openpromfs.
 558
 559           Only choose N if you know in advance that you will not need to modify
 560           OpenPROM settings on the running system.
 561
 562 # Makefile helpers
 563 config SPARC32_PCI
 564         bool
 565         default y
 566         depends on SPARC32 && PCI
 567
 568 config SPARC64_PCI
 569         bool
 570         default y
 571         depends on SPARC64 && PCI
 572
 573 endmenu
 574
 575 menu "Executable file formats"
 576
 577 source "fs/Kconfig.binfmt"
 578
 579 config COMPAT
 580         bool
 581         depends on SPARC64
 582         default y
 583         select COMPAT_BINFMT_ELF
 584
 585 config SYSVIPC_COMPAT
 586         bool
 587         depends on COMPAT && SYSVIPC
 588         default y
 589
 590 endmenu
 591
 592 source "net/Kconfig"
 593
 594 source "drivers/Kconfig"
 595
 596 source "drivers/sbus/char/Kconfig"
 597
 598 source "fs/Kconfig"
 599
 600 source "arch/sparc/Kconfig.debug"
 601
 602 source "security/Kconfig"
 603
 604 source "crypto/Kconfig"
 605
 606 source "lib/Kconfig"