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_MEMBLOCK
  45         select HAVE_SYSCALL_WRAPPERS
  46         select HAVE_DYNAMIC_FTRACE
  47         select HAVE_FTRACE_MCOUNT_RECORD
  48         select HAVE_SYSCALL_TRACEPOINTS
  49         select RTC_DRV_CMOS
  50         select RTC_DRV_BQ4802
  51         select RTC_DRV_SUN4V
  52         select RTC_DRV_STARFIRE
  53         select HAVE_PERF_EVENTS
  54         select PERF_USE_VMALLOC
  55         select IRQ_PREFLOW_FASTEOI
  56
  57 config ARCH_DEFCONFIG
  58         string
  59         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  60         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  61
  62 # CONFIG_BITS can be used at source level to get 32/64 bits
  63 config BITS
  64         int
  65         default 32 if SPARC32
  66         default 64 if SPARC64
  67
  68 config ARCH_USES_GETTIMEOFFSET
  69         bool
  70         default y if SPARC32
  71
  72 config GENERIC_CMOS_UPDATE
  73         bool
  74         default y
  75
  76 config GENERIC_CLOCKEVENTS
  77         bool
  78         default y if SPARC64
  79
  80 config IOMMU_HELPER
  81         bool
  82         default y if SPARC64
  83
  84 config QUICKLIST
  85         bool
  86         default y if SPARC64
  87
  88 config STACKTRACE_SUPPORT
  89         bool
  90         default y if SPARC64
  91
  92 config LOCKDEP_SUPPORT
  93         bool
  94         default y if SPARC64
  95
  96 config HAVE_LATENCYTOP_SUPPORT
  97         bool
  98         default y if SPARC64
  99
 100 config AUDIT_ARCH
 101         bool
 102         default y
 103
 104 config HAVE_SETUP_PER_CPU_AREA
 105         def_bool y if SPARC64
 106
 107 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 108         def_bool y if SPARC64
 109
 110 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 111         def_bool y if SPARC64
 112
 113 config MMU
 114         bool
 115         default y
 116
 117 config HIGHMEM
 118         bool
 119         default y if SPARC32
 120
 121 config ZONE_DMA
 122         bool
 123         default y if SPARC32
 124
 125 config NEED_DMA_MAP_STATE
 126         def_bool y
 127
 128 config NEED_SG_DMA_LENGTH
 129         def_bool y
 130
 131 config GENERIC_ISA_DMA
 132         bool
 133         default y if SPARC32
 134
 135 config GENERIC_GPIO
 136         bool
 137         help
 138           Generic GPIO API support
 139
 140 config ARCH_NO_VIRT_TO_BUS
 141         def_bool y
 142
 143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 144         def_bool y if SPARC64
 145
 146 source "init/Kconfig"
 147
 148 source "kernel/Kconfig.freezer"
 149
 150 menu "Processor type and features"
 151
 152 config SMP
 153         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 154         ---help---
 155           This enables support for systems with more than one CPU. If you have
 156           a system with only one CPU, say N. If you have a system with more
 157           than one CPU, say Y.
 158
 159           If you say N here, the kernel will run on single and multiprocessor
 160           machines, but will use only one CPU of a multiprocessor machine. If
 161           you say Y here, the kernel will run on many, but not all,
 162           singleprocessor machines. On a singleprocessor machine, the kernel
 163           will run faster if you say N here.
 164
 165           People using multiprocessor machines who say Y here should also say
 166           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 167           Management" code will be disabled if you say Y here.
 168
 169           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 170           available at <http://www.tldp.org/docs.html#howto>.
 171
 172           If you don't know what to do here, say N.
 173
 174 config NR_CPUS
 175         int "Maximum number of CPUs"
 176         depends on SMP
 177         range 2 32 if SPARC32
 178         range 2 1024 if SPARC64
 179         default 32 if SPARC32
 180         default 64 if SPARC64
 181
 182 source kernel/Kconfig.hz
 183
 184 config RWSEM_GENERIC_SPINLOCK
 185         bool
 186         default y if SPARC32
 187
 188 config RWSEM_XCHGADD_ALGORITHM
 189         bool
 190         default y if SPARC64
 191
 192 config GENERIC_HWEIGHT
 193         bool
 194         default y if !ULTRA_HAS_POPULATION_COUNT
 195
 196 config GENERIC_CALIBRATE_DELAY
 197         bool
 198         default y
 199
 200 config ARCH_MAY_HAVE_PC_FDC
 201         bool
 202         default y
 203
 204 config EMULATED_CMPXCHG
 205         bool
 206         default y if SPARC32
 207         help
 208           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 209           is emulated, and therefore it is not completely atomic.
 210
 211 # Makefile helpers
 212 config SPARC32_SMP
 213         bool
 214         default y
 215         depends on SPARC32 && SMP
 216
 217 config SPARC64_SMP
 218         bool
 219         default y
 220         depends on SPARC64 && SMP
 221
 222 config EARLYFB
 223         bool "Support for early boot text console"
 224         default y
 225         depends on SPARC64
 226         help
 227           Say Y here to enable a faster early framebuffer boot console.
 228
 229 choice
 230         prompt "Kernel page size" if SPARC64
 231         default SPARC64_PAGE_SIZE_8KB
 232
 233 config SPARC64_PAGE_SIZE_8KB
 234         bool "8KB"
 235         help
 236           This lets you select the page size of the kernel.
 237
 238           8KB and 64KB work quite well, since SPARC ELF sections
 239           provide for up to 64KB alignment.
 240
 241           If you don't know what to do, choose 8KB.
 242
 243 config SPARC64_PAGE_SIZE_64KB
 244         bool "64KB"
 245
 246 endchoice
 247
 248 config SECCOMP
 249         bool "Enable seccomp to safely compute untrusted bytecode"
 250         depends on SPARC64 && PROC_FS
 251         default y
 252         help
 253           This kernel feature is useful for number crunching applications
 254           that may need to compute untrusted bytecode during their
 255           execution. By using pipes or other transports made available to
 256           the process as file descriptors supporting the read/write
 257           syscalls, it's possible to isolate those applications in
 258           their own address space using seccomp. Once seccomp is
 259           enabled via /proc/<pid>/seccomp, it cannot be disabled
 260           and the task is only allowed to execute a few safe syscalls
 261           defined by each seccomp mode.
 262
 263           If unsure, say Y. Only embedded should say N here.
 264
 265 config HOTPLUG_CPU
 266         bool "Support for hot-pluggable CPUs"
 267         depends on SPARC64 && SMP
 268         select HOTPLUG
 269         help
 270           Say Y here to experiment with turning CPUs off and on.  CPUs
 271           can be controlled through /sys/devices/system/cpu/cpu#.
 272           Say N if you want to disable CPU hotplug.
 273
 274 source "kernel/time/Kconfig"
 275
 276 if SPARC64
 277 source "drivers/cpufreq/Kconfig"
 278
 279 config US3_FREQ
 280         tristate "UltraSPARC-III CPU Frequency driver"
 281         depends on CPU_FREQ
 282         select CPU_FREQ_TABLE
 283         help
 284           This adds the CPUFreq driver for UltraSPARC-III processors.
 285
 286           For details, take a look at <file:Documentation/cpu-freq>.
 287
 288           If in doubt, say N.
 289
 290 config US2E_FREQ
 291         tristate "UltraSPARC-IIe CPU Frequency driver"
 292         depends on CPU_FREQ
 293         select CPU_FREQ_TABLE
 294         help
 295           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 296
 297           For details, take a look at <file:Documentation/cpu-freq>.
 298
 299           If in doubt, say N.
 300
 301 endif
 302
 303 config US3_MC
 304         tristate "UltraSPARC-III Memory Controller driver"
 305         depends on SPARC64
 306         default y
 307         help
 308           This adds a driver for the UltraSPARC-III memory controller.
 309           Loading this driver allows exact mnemonic strings to be
 310           printed in the event of a memory error, so that the faulty DIMM
 311           on the motherboard can be matched to the error.
 312
 313           If in doubt, say Y, as this information can be very useful.
 314
 315 # Global things across all Sun machines.
 316 config GENERIC_LOCKBREAK
 317         bool
 318         default y
 319         depends on SPARC64 && SMP && PREEMPT
 320
 321 choice
 322         prompt "SPARC64 Huge TLB Page Size"
 323         depends on SPARC64 && HUGETLB_PAGE
 324         default HUGETLB_PAGE_SIZE_4MB
 325
 326 config HUGETLB_PAGE_SIZE_4MB
 327         bool "4MB"
 328
 329 config HUGETLB_PAGE_SIZE_512K
 330         bool "512K"
 331
 332 config HUGETLB_PAGE_SIZE_64K
 333         depends on !SPARC64_PAGE_SIZE_64KB
 334         bool "64K"
 335
 336 endchoice
 337
 338 config NUMA
 339         bool "NUMA support"
 340         depends on SPARC64 && SMP
 341
 342 config NODES_SHIFT
 343         int
 344         default "4"
 345         depends on NEED_MULTIPLE_NODES
 346
 347 # Some NUMA nodes have memory ranges that span
 348 # other nodes.  Even though a pfn is valid and
 349 # between a node's start and end pfns, it may not
 350 # reside on that node.  See memmap_init_zone()
 351 # for details.
 352 config NODES_SPAN_OTHER_NODES
 353         def_bool y
 354         depends on NEED_MULTIPLE_NODES
 355
 356 config ARCH_POPULATES_NODE_MAP
 357         def_bool y if SPARC64
 358
 359 config ARCH_SELECT_MEMORY_MODEL
 360         def_bool y if SPARC64
 361
 362 config ARCH_SPARSEMEM_ENABLE
 363         def_bool y if SPARC64
 364         select SPARSEMEM_VMEMMAP_ENABLE
 365
 366 config ARCH_SPARSEMEM_DEFAULT
 367         def_bool y if SPARC64
 368
 369 source "mm/Kconfig"
 370
 371 config SCHED_SMT
 372         bool "SMT (Hyperthreading) scheduler support"
 373         depends on SPARC64 && SMP
 374         default y
 375         help
 376           SMT scheduler support improves the CPU scheduler's decision making
 377           when dealing with SPARC cpus at a cost of slightly increased overhead
 378           in some places. If unsure say N here.
 379
 380 config SCHED_MC
 381         bool "Multi-core scheduler support"
 382         depends on SPARC64 && SMP
 383         default y
 384         help
 385           Multi-core scheduler support improves the CPU scheduler's decision
 386           making when dealing with multi-core CPU chips at a cost of slightly
 387           increased overhead in some places. If unsure say N here.
 388
 389 if SPARC64
 390 source "kernel/Kconfig.preempt"
 391 endif
 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 helpers
 565 config SPARC32_PCI
 566         bool
 567         default y
 568         depends on SPARC32 && PCI
 569
 570 config SPARC64_PCI
 571         bool
 572         default y
 573         depends on SPARC64 && PCI
 574
 575 endmenu
 576
 577 menu "Executable file formats"
 578
 579 source "fs/Kconfig.binfmt"
 580
 581 config COMPAT
 582         bool
 583         depends on SPARC64
 584         default y
 585         select COMPAT_BINFMT_ELF
 586
 587 config SYSVIPC_COMPAT
 588         bool
 589         depends on COMPAT && SYSVIPC
 590         default y
 591
 592 endmenu
 593
 594 source "net/Kconfig"
 595
 596 source "drivers/Kconfig"
 597
 598 source "drivers/sbus/char/Kconfig"
 599
 600 source "fs/Kconfig"
 601
 602 source "arch/sparc/Kconfig.debug"
 603
 604 source "security/Kconfig"
 605
 606 source "crypto/Kconfig"
 607
 608 source "lib/Kconfig"