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         select GENERIC_PCI_IOMAP
  32         select HAVE_NMI_WATCHDOG if SPARC64
  33         select GENERIC_SMP_IDLE_THREAD
  34
  35 config SPARC32
  36         def_bool !64BIT
  37         select GENERIC_ATOMIC64
  38         select CLZ_TAB
  39
  40 config SPARC64
  41         def_bool 64BIT
  42         select ARCH_SUPPORTS_MSI
  43         select HAVE_FUNCTION_TRACER
  44         select HAVE_FUNCTION_GRAPH_TRACER
  45         select HAVE_FUNCTION_GRAPH_FP_TEST
  46         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  47         select HAVE_KRETPROBES
  48         select HAVE_KPROBES
  49         select HAVE_RCU_TABLE_FREE if SMP
  50         select HAVE_MEMBLOCK
  51         select HAVE_MEMBLOCK_NODE_MAP
  52         select HAVE_SYSCALL_WRAPPERS
  53         select HAVE_DYNAMIC_FTRACE
  54         select HAVE_FTRACE_MCOUNT_RECORD
  55         select HAVE_SYSCALL_TRACEPOINTS
  56         select RTC_DRV_CMOS
  57         select RTC_DRV_BQ4802
  58         select RTC_DRV_SUN4V
  59         select RTC_DRV_STARFIRE
  60         select HAVE_PERF_EVENTS
  61         select PERF_USE_VMALLOC
  62         select IRQ_PREFLOW_FASTEOI
  63         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  64         select HAVE_C_RECORDMCOUNT
  65
  66 config ARCH_DEFCONFIG
  67         string
  68         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  69         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  70
  71 # CONFIG_BITS can be used at source level to get 32/64 bits
  72 config BITS
  73         int
  74         default 32 if SPARC32
  75         default 64 if SPARC64
  76
  77 config ARCH_USES_GETTIMEOFFSET
  78         bool
  79         default y if SPARC32
  80
  81 config GENERIC_CMOS_UPDATE
  82         bool
  83         default y
  84
  85 config GENERIC_CLOCKEVENTS
  86         bool
  87         default y if SPARC64
  88
  89 config IOMMU_HELPER
  90         bool
  91         default y if SPARC64
  92
  93 config STACKTRACE_SUPPORT
  94         bool
  95         default y if SPARC64
  96
  97 config LOCKDEP_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config HAVE_LATENCYTOP_SUPPORT
 102         bool
 103         default y if SPARC64
 104
 105 config AUDIT_ARCH
 106         bool
 107         default y
 108
 109 config HAVE_SETUP_PER_CPU_AREA
 110         def_bool y if SPARC64
 111
 112 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config MMU
 119         bool
 120         default y
 121
 122 config HIGHMEM
 123         bool
 124         default y if SPARC32
 125
 126 config ZONE_DMA
 127         bool
 128         default y if SPARC32
 129
 130 config NEED_DMA_MAP_STATE
 131         def_bool y
 132
 133 config NEED_SG_DMA_LENGTH
 134         def_bool y
 135
 136 config GENERIC_ISA_DMA
 137         bool
 138         default y if SPARC32
 139
 140 config GENERIC_GPIO
 141         bool
 142         help
 143           Generic GPIO API support
 144
 145 config ARCH_NO_VIRT_TO_BUS
 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_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 source "kernel/time/Kconfig"
 280
 281 if SPARC64
 282 source "drivers/cpufreq/Kconfig"
 283
 284 config US3_FREQ
 285         tristate "UltraSPARC-III CPU Frequency driver"
 286         depends on CPU_FREQ
 287         select CPU_FREQ_TABLE
 288         help
 289           This adds the CPUFreq driver for UltraSPARC-III processors.
 290
 291           For details, take a look at <file:Documentation/cpu-freq>.
 292
 293           If in doubt, say N.
 294
 295 config US2E_FREQ
 296         tristate "UltraSPARC-IIe CPU Frequency driver"
 297         depends on CPU_FREQ
 298         select CPU_FREQ_TABLE
 299         help
 300           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 301
 302           For details, take a look at <file:Documentation/cpu-freq>.
 303
 304           If in doubt, say N.
 305
 306 endif
 307
 308 config US3_MC
 309         tristate "UltraSPARC-III Memory Controller driver"
 310         depends on SPARC64
 311         default y
 312         help
 313           This adds a driver for the UltraSPARC-III memory controller.
 314           Loading this driver allows exact mnemonic strings to be
 315           printed in the event of a memory error, so that the faulty DIMM
 316           on the motherboard can be matched to the error.
 317
 318           If in doubt, say Y, as this information can be very useful.
 319
 320 # Global things across all Sun machines.
 321 config GENERIC_LOCKBREAK
 322         bool
 323         default y
 324         depends on SPARC64 && SMP && PREEMPT
 325
 326 choice
 327         prompt "SPARC64 Huge TLB Page Size"
 328         depends on SPARC64 && HUGETLB_PAGE
 329         default HUGETLB_PAGE_SIZE_4MB
 330
 331 config HUGETLB_PAGE_SIZE_4MB
 332         bool "4MB"
 333
 334 config HUGETLB_PAGE_SIZE_512K
 335         bool "512K"
 336
 337 config HUGETLB_PAGE_SIZE_64K
 338         depends on !SPARC64_PAGE_SIZE_64KB
 339         bool "64K"
 340
 341 endchoice
 342
 343 config NUMA
 344         bool "NUMA support"
 345         depends on SPARC64 && SMP
 346
 347 config NODES_SHIFT
 348         int
 349         default "4"
 350         depends on NEED_MULTIPLE_NODES
 351
 352 # Some NUMA nodes have memory ranges that span
 353 # other nodes.  Even though a pfn is valid and
 354 # between a node's start and end pfns, it may not
 355 # reside on that node.  See memmap_init_zone()
 356 # for details.
 357 config NODES_SPAN_OTHER_NODES
 358         def_bool y
 359         depends on NEED_MULTIPLE_NODES
 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 source "kernel/Kconfig.preempt"
 392
 393 config CMDLINE_BOOL
 394         bool "Default bootloader kernel arguments"
 395         depends on SPARC64
 396
 397 config CMDLINE
 398         string "Initial kernel command string"
 399         depends on CMDLINE_BOOL
 400         default "console=ttyS0,9600 root=/dev/sda1"
 401         help
 402           Say Y here if you want to be able to pass default arguments to
 403           the kernel. This will be overridden by the bootloader, if you
 404           use one (such as SILO). This is most useful if you want to boot
 405           a kernel from TFTP, and want default options to be available
 406           with having them passed on the command line.
 407
 408           NOTE: This option WILL override the PROM bootargs setting!
 409
 410 config SUN_PM
 411         bool
 412         default y if SPARC32
 413         help
 414           Enable power management and CPU standby features on supported
 415           SPARC platforms.
 416
 417 config SPARC_LED
 418         tristate "Sun4m LED driver"
 419         depends on SPARC32
 420         help
 421           This driver toggles the front-panel LED on sun4m systems
 422           in a user-specifiable manner.  Its state can be probed
 423           by reading /proc/led and its blinking mode can be changed
 424           via writes to /proc/led
 425
 426 config SERIAL_CONSOLE
 427         bool
 428         depends on SPARC32
 429         default y
 430         ---help---
 431           If you say Y here, it will be possible to use a serial port as the
 432           system console (the system console is the device which receives all
 433           kernel messages and warnings and which allows logins in single user
 434           mode). This could be useful if some terminal or printer is connected
 435           to that serial port.
 436
 437           Even if you say Y here, the currently visible virtual console
 438           (/dev/tty0) will still be used as the system console by default, but
 439           you can alter that using a kernel command line option such as
 440           "console=ttyS1". (Try "man bootparam" or see the documentation of
 441           your boot loader (silo) about how to pass options to the kernel at
 442           boot time.)
 443
 444           If you don't have a graphics card installed and you say Y here, the
 445           kernel will automatically use the first serial line, /dev/ttyS0, as
 446           system console.
 447
 448           If unsure, say N.
 449
 450 config SPARC_LEON
 451         bool "Sparc Leon processor family"
 452         depends on SPARC32
 453         ---help---
 454           If you say Y here if you are running on a SPARC-LEON processor.
 455           The LEON processor is a synthesizable VHDL model of the
 456           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 457           IP cores that are distributed under GPL. GRLIB can be downloaded
 458           from www.gaisler.com. You can download a sparc-linux cross-compilation
 459           toolchain at www.gaisler.com.
 460
 461 if SPARC_LEON
 462 menu "U-Boot options"
 463
 464 config UBOOT_LOAD_ADDR
 465         hex "uImage Load Address"
 466         default 0x40004000
 467         ---help---
 468          U-Boot kernel load address, the address in physical address space
 469          where u-boot will place the Linux kernel before booting it.
 470          This address is normally the base address of main memory + 0x4000.
 471
 472 config UBOOT_FLASH_ADDR
 473         hex "uImage.o Load Address"
 474         default 0x00080000
 475         ---help---
 476          Optional setting only affecting the uImage.o ELF-image used to
 477          download the uImage file to the target using a ELF-loader other than
 478          U-Boot. It may for example be used to download an uImage to FLASH with
 479          the GRMON utility before even starting u-boot.
 480
 481 config UBOOT_ENTRY_ADDR
 482         hex "uImage Entry Address"
 483         default 0xf0004000
 484         ---help---
 485          Do not change this unless you know what you're doing. This is
 486          hardcoded by the SPARC32 and LEON port.
 487
 488          This is the virtual address u-boot jumps to when booting the Linux
 489          Kernel.
 490
 491 endmenu
 492 endif
 493
 494 endmenu
 495
 496 menu "Bus options (PCI etc.)"
 497 config SBUS
 498         bool
 499         default y
 500
 501 config SBUSCHAR
 502         bool
 503         default y
 504
 505 config SUN_LDOMS
 506         bool "Sun Logical Domains support"
 507         depends on SPARC64
 508         help
 509           Say Y here is you want to support virtual devices via
 510           Logical Domains.
 511
 512 config PCI
 513         bool "Support for PCI and PS/2 keyboard/mouse"
 514         help
 515           Find out whether your system includes a PCI bus. PCI is the name of
 516           a bus system, i.e. the way the CPU talks to the other stuff inside
 517           your box.  If you say Y here, the kernel will include drivers and
 518           infrastructure code to support PCI bus devices.
 519
 520           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 521           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 522           All of these platforms are extremely obscure, so say N if unsure.
 523
 524 config PCI_DOMAINS
 525         def_bool PCI if SPARC64
 526
 527 config PCI_SYSCALL
 528         def_bool PCI
 529
 530 config PCIC_PCI
 531         bool
 532         depends on PCI && SPARC32 && !SPARC_LEON
 533         default y
 534
 535 config LEON_PCI
 536         bool
 537         depends on PCI && SPARC_LEON
 538         default y
 539
 540 config GRPCI2
 541         bool "GRPCI2 Host Bridge Support"
 542         depends on LEON_PCI
 543         default y
 544         help
 545           Say Y here to include the GRPCI2 Host Bridge Driver.
 546
 547 source "drivers/pci/Kconfig"
 548
 549 source "drivers/pcmcia/Kconfig"
 550
 551 config SUN_OPENPROMFS
 552         tristate "Openprom tree appears in /proc/openprom"
 553         help
 554           If you say Y, the OpenPROM device tree will be available as a
 555           virtual file system, which you can mount to /proc/openprom by "mount
 556           -t openpromfs none /proc/openprom".
 557
 558           To compile the /proc/openprom support as a module, choose M here: the
 559           module will be called openpromfs.
 560
 561           Only choose N if you know in advance that you will not need to modify
 562           OpenPROM settings on the running system.
 563
 564 # Makefile helper
 565 config SPARC64_PCI
 566         bool
 567         default y
 568         depends on SPARC64 && PCI
 569
 570 endmenu
 571
 572 menu "Executable file formats"
 573
 574 source "fs/Kconfig.binfmt"
 575
 576 config COMPAT
 577         bool
 578         depends on SPARC64
 579         default y
 580         select COMPAT_BINFMT_ELF
 581         select ARCH_WANT_OLD_COMPAT_IPC
 582
 583 config SYSVIPC_COMPAT
 584         bool
 585         depends on COMPAT && SYSVIPC
 586         default y
 587
 588 endmenu
 589
 590 source "net/Kconfig"
 591
 592 source "drivers/Kconfig"
 593
 594 source "drivers/sbus/char/Kconfig"
 595
 596 source "fs/Kconfig"
 597
 598 source "arch/sparc/Kconfig.debug"
 599
 600 source "security/Kconfig"
 601
 602 source "crypto/Kconfig"
 603
 604 source "lib/Kconfig"