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 HAVE_BPF_JIT
  34         select GENERIC_SMP_IDLE_THREAD
  35         select GENERIC_CMOS_UPDATE
  36         select GENERIC_CLOCKEVENTS
  37         select GENERIC_STRNCPY_FROM_USER
  38         select GENERIC_STRNLEN_USER
  39
  40 config SPARC32
  41         def_bool !64BIT
  42         select GENERIC_ATOMIC64
  43         select CLZ_TAB
  44
  45 config SPARC64
  46         def_bool 64BIT
  47         select ARCH_SUPPORTS_MSI
  48         select HAVE_FUNCTION_TRACER
  49         select HAVE_FUNCTION_GRAPH_TRACER
  50         select HAVE_FUNCTION_GRAPH_FP_TEST
  51         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  52         select HAVE_KRETPROBES
  53         select HAVE_KPROBES
  54         select HAVE_RCU_TABLE_FREE if SMP
  55         select HAVE_MEMBLOCK
  56         select HAVE_MEMBLOCK_NODE_MAP
  57         select HAVE_SYSCALL_WRAPPERS
  58         select HAVE_DYNAMIC_FTRACE
  59         select HAVE_FTRACE_MCOUNT_RECORD
  60         select HAVE_SYSCALL_TRACEPOINTS
  61         select RTC_DRV_CMOS
  62         select RTC_DRV_BQ4802
  63         select RTC_DRV_SUN4V
  64         select RTC_DRV_STARFIRE
  65         select HAVE_PERF_EVENTS
  66         select PERF_USE_VMALLOC
  67         select IRQ_PREFLOW_FASTEOI
  68         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  69         select HAVE_C_RECORDMCOUNT
  70         select NO_BOOTMEM
  71
  72 config ARCH_DEFCONFIG
  73         string
  74         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  75         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  76
  77 # CONFIG_BITS can be used at source level to get 32/64 bits
  78 config BITS
  79         int
  80         default 32 if SPARC32
  81         default 64 if SPARC64
  82
  83 config IOMMU_HELPER
  84         bool
  85         default y if SPARC64
  86
  87 config STACKTRACE_SUPPORT
  88         bool
  89         default y if SPARC64
  90
  91 config LOCKDEP_SUPPORT
  92         bool
  93         default y if SPARC64
  94
  95 config HAVE_LATENCYTOP_SUPPORT
  96         bool
  97         default y if SPARC64
  98
  99 config AUDIT_ARCH
 100         bool
 101         default y
 102
 103 config HAVE_SETUP_PER_CPU_AREA
 104         def_bool y if SPARC64
 105
 106 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 107         def_bool y if SPARC64
 108
 109 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 110         def_bool y if SPARC64
 111
 112 config MMU
 113         bool
 114         default y
 115
 116 config HIGHMEM
 117         bool
 118         default y if SPARC32
 119
 120 config ZONE_DMA
 121         bool
 122         default y if SPARC32
 123
 124 config NEED_DMA_MAP_STATE
 125         def_bool y
 126
 127 config NEED_SG_DMA_LENGTH
 128         def_bool y
 129
 130 config GENERIC_ISA_DMA
 131         bool
 132         default y if SPARC32
 133
 134 config GENERIC_GPIO
 135         bool
 136         help
 137           Generic GPIO API support
 138
 139 config ARCH_NO_VIRT_TO_BUS
 140         def_bool y
 141
 142 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 143         def_bool y if SPARC64
 144
 145 source "init/Kconfig"
 146
 147 source "kernel/Kconfig.freezer"
 148
 149 menu "Processor type and features"
 150
 151 config SMP
 152         bool "Symmetric multi-processing support"
 153         ---help---
 154           This enables support for systems with more than one CPU. If you have
 155           a system with only one CPU, say N. If you have a system with more
 156           than one CPU, say Y.
 157
 158           If you say N here, the kernel will run on single and multiprocessor
 159           machines, but will use only one CPU of a multiprocessor machine. If
 160           you say Y here, the kernel will run on many, but not all,
 161           singleprocessor machines. On a singleprocessor machine, the kernel
 162           will run faster if you say N here.
 163
 164           People using multiprocessor machines who say Y here should also say
 165           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 166           Management" code will be disabled if you say Y here.
 167
 168           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 169           available at <http://www.tldp.org/docs.html#howto>.
 170
 171           If you don't know what to do here, say N.
 172
 173 config NR_CPUS
 174         int "Maximum number of CPUs"
 175         depends on SMP
 176         range 2 32 if SPARC32
 177         range 2 1024 if SPARC64
 178         default 32 if SPARC32
 179         default 64 if SPARC64
 180
 181 source kernel/Kconfig.hz
 182
 183 config RWSEM_GENERIC_SPINLOCK
 184         bool
 185         default y if SPARC32
 186
 187 config RWSEM_XCHGADD_ALGORITHM
 188         bool
 189         default y if SPARC64
 190
 191 config GENERIC_HWEIGHT
 192         bool
 193         default y if !ULTRA_HAS_POPULATION_COUNT
 194
 195 config GENERIC_CALIBRATE_DELAY
 196         bool
 197         default y
 198
 199 config ARCH_MAY_HAVE_PC_FDC
 200         bool
 201         default y
 202
 203 config EMULATED_CMPXCHG
 204         bool
 205         default y if SPARC32
 206         help
 207           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 208           is emulated, and therefore it is not completely atomic.
 209
 210 # Makefile helpers
 211 config SPARC32_SMP
 212         bool
 213         default y
 214         depends on SPARC32 && SMP
 215
 216 config SPARC64_SMP
 217         bool
 218         default y
 219         depends on SPARC64 && SMP
 220
 221 config EARLYFB
 222         bool "Support for early boot text console"
 223         default y
 224         depends on SPARC64
 225         help
 226           Say Y here to enable a faster early framebuffer boot console.
 227
 228 choice
 229         prompt "Kernel page size" if SPARC64
 230         default SPARC64_PAGE_SIZE_8KB
 231
 232 config SPARC64_PAGE_SIZE_8KB
 233         bool "8KB"
 234         help
 235           This lets you select the page size of the kernel.
 236
 237           8KB and 64KB work quite well, since SPARC ELF sections
 238           provide for up to 64KB alignment.
 239
 240           If you don't know what to do, choose 8KB.
 241
 242 config SPARC64_PAGE_SIZE_64KB
 243         bool "64KB"
 244
 245 endchoice
 246
 247 config SECCOMP
 248         bool "Enable seccomp to safely compute untrusted bytecode"
 249         depends on SPARC64 && PROC_FS
 250         default y
 251         help
 252           This kernel feature is useful for number crunching applications
 253           that may need to compute untrusted bytecode during their
 254           execution. By using pipes or other transports made available to
 255           the process as file descriptors supporting the read/write
 256           syscalls, it's possible to isolate those applications in
 257           their own address space using seccomp. Once seccomp is
 258           enabled via /proc/<pid>/seccomp, it cannot be disabled
 259           and the task is only allowed to execute a few safe syscalls
 260           defined by each seccomp mode.
 261
 262           If unsure, say Y. Only embedded should say N here.
 263
 264 config HOTPLUG_CPU
 265         bool "Support for hot-pluggable CPUs"
 266         depends on SPARC64 && SMP
 267         select HOTPLUG
 268         help
 269           Say Y here to experiment with turning CPUs off and on.  CPUs
 270           can be controlled through /sys/devices/system/cpu/cpu#.
 271           Say N if you want to disable CPU hotplug.
 272
 273 if SPARC64
 274 source "drivers/cpufreq/Kconfig"
 275
 276 config US3_FREQ
 277         tristate "UltraSPARC-III CPU Frequency driver"
 278         depends on CPU_FREQ
 279         select CPU_FREQ_TABLE
 280         help
 281           This adds the CPUFreq driver for UltraSPARC-III processors.
 282
 283           For details, take a look at <file:Documentation/cpu-freq>.
 284
 285           If in doubt, say N.
 286
 287 config US2E_FREQ
 288         tristate "UltraSPARC-IIe CPU Frequency driver"
 289         depends on CPU_FREQ
 290         select CPU_FREQ_TABLE
 291         help
 292           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 293
 294           For details, take a look at <file:Documentation/cpu-freq>.
 295
 296           If in doubt, say N.
 297
 298 endif
 299
 300 config US3_MC
 301         tristate "UltraSPARC-III Memory Controller driver"
 302         depends on SPARC64
 303         default y
 304         help
 305           This adds a driver for the UltraSPARC-III memory controller.
 306           Loading this driver allows exact mnemonic strings to be
 307           printed in the event of a memory error, so that the faulty DIMM
 308           on the motherboard can be matched to the error.
 309
 310           If in doubt, say Y, as this information can be very useful.
 311
 312 # Global things across all Sun machines.
 313 config GENERIC_LOCKBREAK
 314         bool
 315         default y
 316         depends on SPARC64 && SMP && PREEMPT
 317
 318 choice
 319         prompt "SPARC64 Huge TLB Page Size"
 320         depends on SPARC64 && HUGETLB_PAGE
 321         default HUGETLB_PAGE_SIZE_4MB
 322
 323 config HUGETLB_PAGE_SIZE_4MB
 324         bool "4MB"
 325
 326 config HUGETLB_PAGE_SIZE_512K
 327         bool "512K"
 328
 329 config HUGETLB_PAGE_SIZE_64K
 330         depends on !SPARC64_PAGE_SIZE_64KB
 331         bool "64K"
 332
 333 endchoice
 334
 335 config NUMA
 336         bool "NUMA support"
 337         depends on SPARC64 && SMP
 338
 339 config NODES_SHIFT
 340         int
 341         default "4"
 342         depends on NEED_MULTIPLE_NODES
 343
 344 # Some NUMA nodes have memory ranges that span
 345 # other nodes.  Even though a pfn is valid and
 346 # between a node's start and end pfns, it may not
 347 # reside on that node.  See memmap_init_zone()
 348 # for details.
 349 config NODES_SPAN_OTHER_NODES
 350         def_bool y
 351         depends on NEED_MULTIPLE_NODES
 352
 353 config ARCH_SELECT_MEMORY_MODEL
 354         def_bool y if SPARC64
 355
 356 config ARCH_SPARSEMEM_ENABLE
 357         def_bool y if SPARC64
 358         select SPARSEMEM_VMEMMAP_ENABLE
 359
 360 config ARCH_SPARSEMEM_DEFAULT
 361         def_bool y if SPARC64
 362
 363 source "mm/Kconfig"
 364
 365 config SCHED_SMT
 366         bool "SMT (Hyperthreading) scheduler support"
 367         depends on SPARC64 && SMP
 368         default y
 369         help
 370           SMT scheduler support improves the CPU scheduler's decision making
 371           when dealing with SPARC cpus at a cost of slightly increased overhead
 372           in some places. If unsure say N here.
 373
 374 config SCHED_MC
 375         bool "Multi-core scheduler support"
 376         depends on SPARC64 && SMP
 377         default y
 378         help
 379           Multi-core scheduler support improves the CPU scheduler's decision
 380           making when dealing with multi-core CPU chips at a cost of slightly
 381           increased overhead in some places. If unsure say N here.
 382
 383 source "kernel/Kconfig.preempt"
 384
 385 config CMDLINE_BOOL
 386         bool "Default bootloader kernel arguments"
 387         depends on SPARC64
 388
 389 config CMDLINE
 390         string "Initial kernel command string"
 391         depends on CMDLINE_BOOL
 392         default "console=ttyS0,9600 root=/dev/sda1"
 393         help
 394           Say Y here if you want to be able to pass default arguments to
 395           the kernel. This will be overridden by the bootloader, if you
 396           use one (such as SILO). This is most useful if you want to boot
 397           a kernel from TFTP, and want default options to be available
 398           with having them passed on the command line.
 399
 400           NOTE: This option WILL override the PROM bootargs setting!
 401
 402 config SUN_PM
 403         bool
 404         default y if SPARC32
 405         help
 406           Enable power management and CPU standby features on supported
 407           SPARC platforms.
 408
 409 config SPARC_LED
 410         tristate "Sun4m LED driver"
 411         depends on SPARC32
 412         help
 413           This driver toggles the front-panel LED on sun4m systems
 414           in a user-specifiable manner.  Its state can be probed
 415           by reading /proc/led and its blinking mode can be changed
 416           via writes to /proc/led
 417
 418 config SERIAL_CONSOLE
 419         bool
 420         depends on SPARC32
 421         default y
 422         ---help---
 423           If you say Y here, it will be possible to use a serial port as the
 424           system console (the system console is the device which receives all
 425           kernel messages and warnings and which allows logins in single user
 426           mode). This could be useful if some terminal or printer is connected
 427           to that serial port.
 428
 429           Even if you say Y here, the currently visible virtual console
 430           (/dev/tty0) will still be used as the system console by default, but
 431           you can alter that using a kernel command line option such as
 432           "console=ttyS1". (Try "man bootparam" or see the documentation of
 433           your boot loader (silo) about how to pass options to the kernel at
 434           boot time.)
 435
 436           If you don't have a graphics card installed and you say Y here, the
 437           kernel will automatically use the first serial line, /dev/ttyS0, as
 438           system console.
 439
 440           If unsure, say N.
 441
 442 config SPARC_LEON
 443         bool "Sparc Leon processor family"
 444         depends on SPARC32
 445         ---help---
 446           If you say Y here if you are running on a SPARC-LEON processor.
 447           The LEON processor is a synthesizable VHDL model of the
 448           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 449           IP cores that are distributed under GPL. GRLIB can be downloaded
 450           from www.gaisler.com. You can download a sparc-linux cross-compilation
 451           toolchain at www.gaisler.com.
 452
 453 if SPARC_LEON
 454 menu "U-Boot options"
 455
 456 config UBOOT_LOAD_ADDR
 457         hex "uImage Load Address"
 458         default 0x40004000
 459         ---help---
 460          U-Boot kernel load address, the address in physical address space
 461          where u-boot will place the Linux kernel before booting it.
 462          This address is normally the base address of main memory + 0x4000.
 463
 464 config UBOOT_FLASH_ADDR
 465         hex "uImage.o Load Address"
 466         default 0x00080000
 467         ---help---
 468          Optional setting only affecting the uImage.o ELF-image used to
 469          download the uImage file to the target using a ELF-loader other than
 470          U-Boot. It may for example be used to download an uImage to FLASH with
 471          the GRMON utility before even starting u-boot.
 472
 473 config UBOOT_ENTRY_ADDR
 474         hex "uImage Entry Address"
 475         default 0xf0004000
 476         ---help---
 477          Do not change this unless you know what you're doing. This is
 478          hardcoded by the SPARC32 and LEON port.
 479
 480          This is the virtual address u-boot jumps to when booting the Linux
 481          Kernel.
 482
 483 endmenu
 484 endif
 485
 486 endmenu
 487
 488 menu "Bus options (PCI etc.)"
 489 config SBUS
 490         bool
 491         default y
 492
 493 config SBUSCHAR
 494         bool
 495         default y
 496
 497 config SUN_LDOMS
 498         bool "Sun Logical Domains support"
 499         depends on SPARC64
 500         help
 501           Say Y here is you want to support virtual devices via
 502           Logical Domains.
 503
 504 config PCI
 505         bool "Support for PCI and PS/2 keyboard/mouse"
 506         help
 507           Find out whether your system includes a PCI bus. PCI is the name of
 508           a bus system, i.e. the way the CPU talks to the other stuff inside
 509           your box.  If you say Y here, the kernel will include drivers and
 510           infrastructure code to support PCI bus devices.
 511
 512           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 513           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 514           All of these platforms are extremely obscure, so say N if unsure.
 515
 516 config PCI_DOMAINS
 517         def_bool PCI if SPARC64
 518
 519 config PCI_SYSCALL
 520         def_bool PCI
 521
 522 config PCIC_PCI
 523         bool
 524         depends on PCI && SPARC32 && !SPARC_LEON
 525         default y
 526
 527 config LEON_PCI
 528         bool
 529         depends on PCI && SPARC_LEON
 530         default y
 531
 532 config GRPCI2
 533         bool "GRPCI2 Host Bridge Support"
 534         depends on LEON_PCI
 535         default y
 536         help
 537           Say Y here to include the GRPCI2 Host Bridge Driver.
 538
 539 source "drivers/pci/Kconfig"
 540
 541 source "drivers/pcmcia/Kconfig"
 542
 543 config SUN_OPENPROMFS
 544         tristate "Openprom tree appears in /proc/openprom"
 545         help
 546           If you say Y, the OpenPROM device tree will be available as a
 547           virtual file system, which you can mount to /proc/openprom by "mount
 548           -t openpromfs none /proc/openprom".
 549
 550           To compile the /proc/openprom support as a module, choose M here: the
 551           module will be called openpromfs.
 552
 553           Only choose N if you know in advance that you will not need to modify
 554           OpenPROM settings on the running system.
 555
 556 # Makefile helper
 557 config SPARC64_PCI
 558         bool
 559         default y
 560         depends on SPARC64 && PCI
 561
 562 endmenu
 563
 564 menu "Executable file formats"
 565
 566 source "fs/Kconfig.binfmt"
 567
 568 config COMPAT
 569         bool
 570         depends on SPARC64
 571         default y
 572         select COMPAT_BINFMT_ELF
 573         select ARCH_WANT_OLD_COMPAT_IPC
 574
 575 config SYSVIPC_COMPAT
 576         bool
 577         depends on COMPAT && SYSVIPC
 578         default y
 579
 580 config KEYS_COMPAT
 581         def_bool y if COMPAT && KEYS
 582
 583 endmenu
 584
 585 source "net/Kconfig"
 586
 587 source "drivers/Kconfig"
 588
 589 source "drivers/sbus/char/Kconfig"
 590
 591 source "fs/Kconfig"
 592
 593 source "arch/sparc/Kconfig.debug"
 594
 595 source "security/Kconfig"
 596
 597 source "crypto/Kconfig"
 598
 599 source "lib/Kconfig"