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
  33 config SPARC32
  34         def_bool !64BIT
  35         select GENERIC_ATOMIC64
  36         select CLZ_TAB
  37
  38 config SPARC64
  39         def_bool 64BIT
  40         select ARCH_SUPPORTS_MSI
  41         select HAVE_FUNCTION_TRACER
  42         select HAVE_FUNCTION_GRAPH_TRACER
  43         select HAVE_FUNCTION_GRAPH_FP_TEST
  44         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  45         select HAVE_KRETPROBES
  46         select HAVE_KPROBES
  47         select HAVE_RCU_TABLE_FREE if SMP
  48         select HAVE_MEMBLOCK
  49         select HAVE_MEMBLOCK_NODE_MAP
  50         select HAVE_SYSCALL_WRAPPERS
  51         select HAVE_DYNAMIC_FTRACE
  52         select HAVE_FTRACE_MCOUNT_RECORD
  53         select HAVE_SYSCALL_TRACEPOINTS
  54         select RTC_DRV_CMOS
  55         select RTC_DRV_BQ4802
  56         select RTC_DRV_SUN4V
  57         select RTC_DRV_STARFIRE
  58         select HAVE_PERF_EVENTS
  59         select PERF_USE_VMALLOC
  60         select IRQ_PREFLOW_FASTEOI
  61         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  62         select HAVE_C_RECORDMCOUNT
  63
  64 config ARCH_DEFCONFIG
  65         string
  66         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  67         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  68
  69 # CONFIG_BITS can be used at source level to get 32/64 bits
  70 config BITS
  71         int
  72         default 32 if SPARC32
  73         default 64 if SPARC64
  74
  75 config ARCH_USES_GETTIMEOFFSET
  76         bool
  77         default y if SPARC32
  78
  79 config GENERIC_CMOS_UPDATE
  80         bool
  81         default y
  82
  83 config GENERIC_CLOCKEVENTS
  84         bool
  85         default y if SPARC64
  86
  87 config IOMMU_HELPER
  88         bool
  89         default y if SPARC64
  90
  91 config STACKTRACE_SUPPORT
  92         bool
  93         default y if SPARC64
  94
  95 config LOCKDEP_SUPPORT
  96         bool
  97         default y if SPARC64
  98
  99 config HAVE_LATENCYTOP_SUPPORT
 100         bool
 101         default y if SPARC64
 102
 103 config AUDIT_ARCH
 104         bool
 105         default y
 106
 107 config HAVE_SETUP_PER_CPU_AREA
 108         def_bool y if SPARC64
 109
 110 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 111         def_bool y if SPARC64
 112
 113 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 114         def_bool y if SPARC64
 115
 116 config MMU
 117         bool
 118         default y
 119
 120 config HIGHMEM
 121         bool
 122         default y if SPARC32
 123
 124 config ZONE_DMA
 125         bool
 126         default y if SPARC32
 127
 128 config NEED_DMA_MAP_STATE
 129         def_bool y
 130
 131 config NEED_SG_DMA_LENGTH
 132         def_bool y
 133
 134 config GENERIC_ISA_DMA
 135         bool
 136         default y if SPARC32
 137
 138 config GENERIC_GPIO
 139         bool
 140         help
 141           Generic GPIO API support
 142
 143 config ARCH_NO_VIRT_TO_BUS
 144         def_bool y
 145
 146 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 147         def_bool y if SPARC64
 148
 149 source "init/Kconfig"
 150
 151 source "kernel/Kconfig.freezer"
 152
 153 menu "Processor type and features"
 154
 155 config SMP
 156         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 157         ---help---
 158           This enables support for systems with more than one CPU. If you have
 159           a system with only one CPU, say N. If you have a system with more
 160           than one CPU, say Y.
 161
 162           If you say N here, the kernel will run on single and multiprocessor
 163           machines, but will use only one CPU of a multiprocessor machine. If
 164           you say Y here, the kernel will run on many, but not all,
 165           singleprocessor machines. On a singleprocessor machine, the kernel
 166           will run faster if you say N here.
 167
 168           People using multiprocessor machines who say Y here should also say
 169           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 170           Management" code will be disabled if you say Y here.
 171
 172           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 173           available at <http://www.tldp.org/docs.html#howto>.
 174
 175           If you don't know what to do here, say N.
 176
 177 config NR_CPUS
 178         int "Maximum number of CPUs"
 179         depends on SMP
 180         range 2 32 if SPARC32
 181         range 2 1024 if SPARC64
 182         default 32 if SPARC32
 183         default 64 if SPARC64
 184
 185 source kernel/Kconfig.hz
 186
 187 config RWSEM_GENERIC_SPINLOCK
 188         bool
 189         default y if SPARC32
 190
 191 config RWSEM_XCHGADD_ALGORITHM
 192         bool
 193         default y if SPARC64
 194
 195 config GENERIC_HWEIGHT
 196         bool
 197         default y if !ULTRA_HAS_POPULATION_COUNT
 198
 199 config GENERIC_CALIBRATE_DELAY
 200         bool
 201         default y
 202
 203 config ARCH_MAY_HAVE_PC_FDC
 204         bool
 205         default y
 206
 207 config EMULATED_CMPXCHG
 208         bool
 209         default y if SPARC32
 210         help
 211           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 212           is emulated, and therefore it is not completely atomic.
 213
 214 # Makefile helpers
 215 config SPARC32_SMP
 216         bool
 217         default y
 218         depends on SPARC32 && SMP
 219
 220 config SPARC64_SMP
 221         bool
 222         default y
 223         depends on SPARC64 && SMP
 224
 225 config EARLYFB
 226         bool "Support for early boot text console"
 227         default y
 228         depends on SPARC64
 229         help
 230           Say Y here to enable a faster early framebuffer boot console.
 231
 232 choice
 233         prompt "Kernel page size" if SPARC64
 234         default SPARC64_PAGE_SIZE_8KB
 235
 236 config SPARC64_PAGE_SIZE_8KB
 237         bool "8KB"
 238         help
 239           This lets you select the page size of the kernel.
 240
 241           8KB and 64KB work quite well, since SPARC ELF sections
 242           provide for up to 64KB alignment.
 243
 244           If you don't know what to do, choose 8KB.
 245
 246 config SPARC64_PAGE_SIZE_64KB
 247         bool "64KB"
 248
 249 endchoice
 250
 251 config SECCOMP
 252         bool "Enable seccomp to safely compute untrusted bytecode"
 253         depends on SPARC64 && PROC_FS
 254         default y
 255         help
 256           This kernel feature is useful for number crunching applications
 257           that may need to compute untrusted bytecode during their
 258           execution. By using pipes or other transports made available to
 259           the process as file descriptors supporting the read/write
 260           syscalls, it's possible to isolate those applications in
 261           their own address space using seccomp. Once seccomp is
 262           enabled via /proc/<pid>/seccomp, it cannot be disabled
 263           and the task is only allowed to execute a few safe syscalls
 264           defined by each seccomp mode.
 265
 266           If unsure, say Y. Only embedded should say N here.
 267
 268 config HOTPLUG_CPU
 269         bool "Support for hot-pluggable CPUs"
 270         depends on SPARC64 && SMP
 271         select HOTPLUG
 272         help
 273           Say Y here to experiment with turning CPUs off and on.  CPUs
 274           can be controlled through /sys/devices/system/cpu/cpu#.
 275           Say N if you want to disable CPU hotplug.
 276
 277 source "kernel/time/Kconfig"
 278
 279 if SPARC64
 280 source "drivers/cpufreq/Kconfig"
 281
 282 config US3_FREQ
 283         tristate "UltraSPARC-III CPU Frequency driver"
 284         depends on CPU_FREQ
 285         select CPU_FREQ_TABLE
 286         help
 287           This adds the CPUFreq driver for UltraSPARC-III processors.
 288
 289           For details, take a look at <file:Documentation/cpu-freq>.
 290
 291           If in doubt, say N.
 292
 293 config US2E_FREQ
 294         tristate "UltraSPARC-IIe CPU Frequency driver"
 295         depends on CPU_FREQ
 296         select CPU_FREQ_TABLE
 297         help
 298           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 299
 300           For details, take a look at <file:Documentation/cpu-freq>.
 301
 302           If in doubt, say N.
 303
 304 endif
 305
 306 config US3_MC
 307         tristate "UltraSPARC-III Memory Controller driver"
 308         depends on SPARC64
 309         default y
 310         help
 311           This adds a driver for the UltraSPARC-III memory controller.
 312           Loading this driver allows exact mnemonic strings to be
 313           printed in the event of a memory error, so that the faulty DIMM
 314           on the motherboard can be matched to the error.
 315
 316           If in doubt, say Y, as this information can be very useful.
 317
 318 # Global things across all Sun machines.
 319 config GENERIC_LOCKBREAK
 320         bool
 321         default y
 322         depends on SPARC64 && SMP && PREEMPT
 323
 324 choice
 325         prompt "SPARC64 Huge TLB Page Size"
 326         depends on SPARC64 && HUGETLB_PAGE
 327         default HUGETLB_PAGE_SIZE_4MB
 328
 329 config HUGETLB_PAGE_SIZE_4MB
 330         bool "4MB"
 331
 332 config HUGETLB_PAGE_SIZE_512K
 333         bool "512K"
 334
 335 config HUGETLB_PAGE_SIZE_64K
 336         depends on !SPARC64_PAGE_SIZE_64KB
 337         bool "64K"
 338
 339 endchoice
 340
 341 config NUMA
 342         bool "NUMA support"
 343         depends on SPARC64 && SMP
 344
 345 config NODES_SHIFT
 346         int
 347         default "4"
 348         depends on NEED_MULTIPLE_NODES
 349
 350 # Some NUMA nodes have memory ranges that span
 351 # other nodes.  Even though a pfn is valid and
 352 # between a node's start and end pfns, it may not
 353 # reside on that node.  See memmap_init_zone()
 354 # for details.
 355 config NODES_SPAN_OTHER_NODES
 356         def_bool y
 357         depends on NEED_MULTIPLE_NODES
 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 source "kernel/Kconfig.preempt"
 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 helper
 563 config SPARC64_PCI
 564         bool
 565         default y
 566         depends on SPARC64 && PCI
 567
 568 endmenu
 569
 570 menu "Executable file formats"
 571
 572 source "fs/Kconfig.binfmt"
 573
 574 config COMPAT
 575         bool
 576         depends on SPARC64
 577         default y
 578         select COMPAT_BINFMT_ELF
 579
 580 config SYSVIPC_COMPAT
 581         bool
 582         depends on COMPAT && SYSVIPC
 583         default y
 584
 585 endmenu
 586
 587 source "net/Kconfig"
 588
 589 source "drivers/Kconfig"
 590
 591 source "drivers/sbus/char/Kconfig"
 592
 593 source "fs/Kconfig"
 594
 595 source "arch/sparc/Kconfig.debug"
 596
 597 source "security/Kconfig"
 598
 599 source "crypto/Kconfig"
 600
 601 source "lib/Kconfig"