linux/arch/sparc/Kconfig
<<
>>
Prefs
   1config 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
  12config 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 ARCH_WANT_IPC_PARSE_VERSION
  31        select USE_GENERIC_SMP_HELPERS if SMP
  32        select GENERIC_PCI_IOMAP
  33        select HAVE_NMI_WATCHDOG if SPARC64
  34        select HAVE_BPF_JIT
  35        select GENERIC_SMP_IDLE_THREAD
  36        select GENERIC_CMOS_UPDATE
  37        select GENERIC_CLOCKEVENTS
  38        select GENERIC_STRNCPY_FROM_USER
  39        select GENERIC_STRNLEN_USER
  40
  41config SPARC32
  42        def_bool !64BIT
  43        select GENERIC_ATOMIC64
  44        select CLZ_TAB
  45
  46config SPARC64
  47        def_bool 64BIT
  48        select ARCH_SUPPORTS_MSI
  49        select HAVE_FUNCTION_TRACER
  50        select HAVE_FUNCTION_GRAPH_TRACER
  51        select HAVE_FUNCTION_GRAPH_FP_TEST
  52        select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  53        select HAVE_KRETPROBES
  54        select HAVE_KPROBES
  55        select HAVE_RCU_TABLE_FREE if SMP
  56        select HAVE_MEMBLOCK
  57        select HAVE_MEMBLOCK_NODE_MAP
  58        select HAVE_SYSCALL_WRAPPERS
  59        select HAVE_DYNAMIC_FTRACE
  60        select HAVE_FTRACE_MCOUNT_RECORD
  61        select HAVE_SYSCALL_TRACEPOINTS
  62        select RTC_DRV_CMOS
  63        select RTC_DRV_BQ4802
  64        select RTC_DRV_SUN4V
  65        select RTC_DRV_STARFIRE
  66        select HAVE_PERF_EVENTS
  67        select PERF_USE_VMALLOC
  68        select IRQ_PREFLOW_FASTEOI
  69        select ARCH_HAVE_NMI_SAFE_CMPXCHG
  70        select HAVE_C_RECORDMCOUNT
  71        select NO_BOOTMEM
  72
  73config ARCH_DEFCONFIG
  74        string
  75        default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  76        default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  77
  78# CONFIG_BITS can be used at source level to get 32/64 bits
  79config BITS
  80        int
  81        default 32 if SPARC32
  82        default 64 if SPARC64
  83
  84config IOMMU_HELPER
  85        bool
  86        default y if SPARC64
  87
  88config STACKTRACE_SUPPORT
  89        bool
  90        default y if SPARC64
  91
  92config LOCKDEP_SUPPORT
  93        bool
  94        default y if SPARC64
  95
  96config HAVE_LATENCYTOP_SUPPORT
  97        bool
  98        default y if SPARC64
  99
 100config AUDIT_ARCH
 101        bool
 102        default y
 103
 104config HAVE_SETUP_PER_CPU_AREA
 105        def_bool y if SPARC64
 106
 107config NEED_PER_CPU_EMBED_FIRST_CHUNK
 108        def_bool y if SPARC64
 109
 110config NEED_PER_CPU_PAGE_FIRST_CHUNK
 111        def_bool y if SPARC64
 112
 113config MMU
 114        bool
 115        default y
 116
 117config HIGHMEM
 118        bool
 119        default y if SPARC32
 120
 121config ZONE_DMA
 122        bool
 123        default y if SPARC32
 124
 125config NEED_DMA_MAP_STATE
 126        def_bool y
 127
 128config NEED_SG_DMA_LENGTH
 129        def_bool y
 130
 131config GENERIC_ISA_DMA
 132        bool
 133        default y if SPARC32
 134
 135config GENERIC_GPIO
 136        bool
 137        help
 138          Generic GPIO API support
 139
 140config ARCH_NO_VIRT_TO_BUS
 141        def_bool y
 142
 143config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 144        def_bool y if SPARC64
 145
 146source "init/Kconfig"
 147
 148source "kernel/Kconfig.freezer"
 149
 150menu "Processor type and features"
 151
 152config SMP
 153        bool "Symmetric multi-processing support"
 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
 174config 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
 182source kernel/Kconfig.hz
 183
 184config RWSEM_GENERIC_SPINLOCK
 185        bool
 186        default y if SPARC32
 187
 188config RWSEM_XCHGADD_ALGORITHM
 189        bool
 190        default y if SPARC64
 191
 192config GENERIC_HWEIGHT
 193        bool
 194        default y if !ULTRA_HAS_POPULATION_COUNT
 195
 196config GENERIC_CALIBRATE_DELAY
 197        bool
 198        default y
 199
 200config ARCH_MAY_HAVE_PC_FDC
 201        bool
 202        default y
 203
 204config 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
 212config SPARC32_SMP
 213        bool
 214        default y
 215        depends on SPARC32 && SMP
 216
 217config SPARC64_SMP
 218        bool
 219        default y
 220        depends on SPARC64 && SMP
 221
 222config 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
 229choice
 230        prompt "Kernel page size" if SPARC64
 231        default SPARC64_PAGE_SIZE_8KB
 232
 233config 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
 243config SPARC64_PAGE_SIZE_64KB
 244        bool "64KB"
 245
 246endchoice
 247
 248config 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
 265config 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
 274if SPARC64
 275source "drivers/cpufreq/Kconfig"
 276
 277config 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
 288config 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
 299endif
 300
 301config 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.
 314config GENERIC_LOCKBREAK
 315        bool
 316        default y
 317        depends on SPARC64 && SMP && PREEMPT
 318
 319choice
 320        prompt "SPARC64 Huge TLB Page Size"
 321        depends on SPARC64 && HUGETLB_PAGE
 322        default HUGETLB_PAGE_SIZE_4MB
 323
 324config HUGETLB_PAGE_SIZE_4MB
 325        bool "4MB"
 326
 327config HUGETLB_PAGE_SIZE_512K
 328        bool "512K"
 329
 330config HUGETLB_PAGE_SIZE_64K
 331        depends on !SPARC64_PAGE_SIZE_64KB
 332        bool "64K"
 333
 334endchoice
 335
 336config NUMA
 337        bool "NUMA support"
 338        depends on SPARC64 && SMP
 339
 340config 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.
 350config NODES_SPAN_OTHER_NODES
 351        def_bool y
 352        depends on NEED_MULTIPLE_NODES
 353
 354config ARCH_SELECT_MEMORY_MODEL
 355        def_bool y if SPARC64
 356
 357config ARCH_SPARSEMEM_ENABLE
 358        def_bool y if SPARC64
 359        select SPARSEMEM_VMEMMAP_ENABLE
 360
 361config ARCH_SPARSEMEM_DEFAULT
 362        def_bool y if SPARC64
 363
 364source "mm/Kconfig"
 365
 366config SCHED_SMT
 367        bool "SMT (Hyperthreading) scheduler support"
 368        depends on SPARC64 && SMP
 369        default y
 370        help
 371          SMT scheduler support improves the CPU scheduler's decision making
 372          when dealing with SPARC cpus at a cost of slightly increased overhead
 373          in some places. If unsure say N here.
 374
 375config SCHED_MC
 376        bool "Multi-core scheduler support"
 377        depends on SPARC64 && SMP
 378        default y
 379        help
 380          Multi-core scheduler support improves the CPU scheduler's decision
 381          making when dealing with multi-core CPU chips at a cost of slightly
 382          increased overhead in some places. If unsure say N here.
 383
 384source "kernel/Kconfig.preempt"
 385
 386config CMDLINE_BOOL
 387        bool "Default bootloader kernel arguments"
 388        depends on SPARC64
 389
 390config CMDLINE
 391        string "Initial kernel command string"
 392        depends on CMDLINE_BOOL
 393        default "console=ttyS0,9600 root=/dev/sda1"
 394        help
 395          Say Y here if you want to be able to pass default arguments to
 396          the kernel. This will be overridden by the bootloader, if you
 397          use one (such as SILO). This is most useful if you want to boot
 398          a kernel from TFTP, and want default options to be available
 399          with having them passed on the command line.
 400
 401          NOTE: This option WILL override the PROM bootargs setting!
 402
 403config SUN_PM
 404        bool
 405        default y if SPARC32
 406        help
 407          Enable power management and CPU standby features on supported
 408          SPARC platforms.
 409
 410config SPARC_LED
 411        tristate "Sun4m LED driver"
 412        depends on SPARC32
 413        help
 414          This driver toggles the front-panel LED on sun4m systems
 415          in a user-specifiable manner.  Its state can be probed
 416          by reading /proc/led and its blinking mode can be changed
 417          via writes to /proc/led
 418
 419config SERIAL_CONSOLE
 420        bool
 421        depends on SPARC32
 422        default y
 423        ---help---
 424          If you say Y here, it will be possible to use a serial port as the
 425          system console (the system console is the device which receives all
 426          kernel messages and warnings and which allows logins in single user
 427          mode). This could be useful if some terminal or printer is connected
 428          to that serial port.
 429
 430          Even if you say Y here, the currently visible virtual console
 431          (/dev/tty0) will still be used as the system console by default, but
 432          you can alter that using a kernel command line option such as
 433          "console=ttyS1". (Try "man bootparam" or see the documentation of
 434          your boot loader (silo) about how to pass options to the kernel at
 435          boot time.)
 436
 437          If you don't have a graphics card installed and you say Y here, the
 438          kernel will automatically use the first serial line, /dev/ttyS0, as
 439          system console.
 440
 441          If unsure, say N.
 442
 443config SPARC_LEON
 444        bool "Sparc Leon processor family"
 445        depends on SPARC32
 446        ---help---
 447          If you say Y here if you are running on a SPARC-LEON processor.
 448          The LEON processor is a synthesizable VHDL model of the
 449          SPARC-v8 standard. LEON is  part of the GRLIB collection of
 450          IP cores that are distributed under GPL. GRLIB can be downloaded
 451          from www.gaisler.com. You can download a sparc-linux cross-compilation
 452          toolchain at www.gaisler.com.
 453
 454if SPARC_LEON
 455menu "U-Boot options"
 456
 457config UBOOT_LOAD_ADDR
 458        hex "uImage Load Address"
 459        default 0x40004000
 460        ---help---
 461         U-Boot kernel load address, the address in physical address space
 462         where u-boot will place the Linux kernel before booting it.
 463         This address is normally the base address of main memory + 0x4000.
 464
 465config UBOOT_FLASH_ADDR
 466        hex "uImage.o Load Address"
 467        default 0x00080000
 468        ---help---
 469         Optional setting only affecting the uImage.o ELF-image used to
 470         download the uImage file to the target using a ELF-loader other than
 471         U-Boot. It may for example be used to download an uImage to FLASH with
 472         the GRMON utility before even starting u-boot.
 473
 474config UBOOT_ENTRY_ADDR
 475        hex "uImage Entry Address"
 476        default 0xf0004000
 477        ---help---
 478         Do not change this unless you know what you're doing. This is
 479         hardcoded by the SPARC32 and LEON port.
 480
 481         This is the virtual address u-boot jumps to when booting the Linux
 482         Kernel.
 483
 484endmenu
 485endif
 486
 487endmenu
 488
 489menu "Bus options (PCI etc.)"
 490config SBUS
 491        bool
 492        default y
 493
 494config SBUSCHAR
 495        bool
 496        default y
 497
 498config SUN_LDOMS
 499        bool "Sun Logical Domains support"
 500        depends on SPARC64
 501        help
 502          Say Y here is you want to support virtual devices via
 503          Logical Domains.
 504
 505config PCI
 506        bool "Support for PCI and PS/2 keyboard/mouse"
 507        help
 508          Find out whether your system includes a PCI bus. PCI is the name of
 509          a bus system, i.e. the way the CPU talks to the other stuff inside
 510          your box.  If you say Y here, the kernel will include drivers and
 511          infrastructure code to support PCI bus devices.
 512
 513          CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 514          CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 515          All of these platforms are extremely obscure, so say N if unsure.
 516
 517config PCI_DOMAINS
 518        def_bool PCI if SPARC64
 519
 520config PCI_SYSCALL
 521        def_bool PCI
 522
 523config PCIC_PCI
 524        bool
 525        depends on PCI && SPARC32 && !SPARC_LEON
 526        default y
 527
 528config LEON_PCI
 529        bool
 530        depends on PCI && SPARC_LEON
 531        default y
 532
 533config GRPCI2
 534        bool "GRPCI2 Host Bridge Support"
 535        depends on LEON_PCI
 536        default y
 537        help
 538          Say Y here to include the GRPCI2 Host Bridge Driver.
 539
 540source "drivers/pci/Kconfig"
 541
 542source "drivers/pcmcia/Kconfig"
 543
 544config SUN_OPENPROMFS
 545        tristate "Openprom tree appears in /proc/openprom"
 546        help
 547          If you say Y, the OpenPROM device tree will be available as a
 548          virtual file system, which you can mount to /proc/openprom by "mount
 549          -t openpromfs none /proc/openprom".
 550
 551          To compile the /proc/openprom support as a module, choose M here: the
 552          module will be called openpromfs.
 553
 554          Only choose N if you know in advance that you will not need to modify
 555          OpenPROM settings on the running system.
 556
 557# Makefile helper
 558config SPARC64_PCI
 559        bool
 560        default y
 561        depends on SPARC64 && PCI
 562
 563endmenu
 564
 565menu "Executable file formats"
 566
 567source "fs/Kconfig.binfmt"
 568
 569config COMPAT
 570        bool
 571        depends on SPARC64
 572        default y
 573        select COMPAT_BINFMT_ELF
 574        select ARCH_WANT_OLD_COMPAT_IPC
 575
 576config SYSVIPC_COMPAT
 577        bool
 578        depends on COMPAT && SYSVIPC
 579        default y
 580
 581config KEYS_COMPAT
 582        def_bool y if COMPAT && KEYS
 583
 584endmenu
 585
 586source "net/Kconfig"
 587
 588source "drivers/Kconfig"
 589
 590source "drivers/sbus/char/Kconfig"
 591
 592source "fs/Kconfig"
 593
 594source "arch/sparc/Kconfig.debug"
 595
 596source "security/Kconfig"
 597
 598source "crypto/Kconfig"
 599
 600source "lib/Kconfig"
 601
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.