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_RCU_TABLE_FREE if SMP
  45         select HAVE_MEMBLOCK
  46         select HAVE_SYSCALL_WRAPPERS
  47         select HAVE_DYNAMIC_FTRACE
  48         select HAVE_FTRACE_MCOUNT_RECORD
  49         select HAVE_SYSCALL_TRACEPOINTS
  50         select RTC_DRV_CMOS
  51         select RTC_DRV_BQ4802
  52         select RTC_DRV_SUN4V
  53         select RTC_DRV_STARFIRE
  54         select HAVE_PERF_EVENTS
  55         select PERF_USE_VMALLOC
  56         select IRQ_PREFLOW_FASTEOI
  57         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  58         select HAVE_C_RECORDMCOUNT
  59
  60 config ARCH_DEFCONFIG
  61         string
  62         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  63         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  64
  65 # CONFIG_BITS can be used at source level to get 32/64 bits
  66 config BITS
  67         int
  68         default 32 if SPARC32
  69         default 64 if SPARC64
  70
  71 config ARCH_USES_GETTIMEOFFSET
  72         bool
  73         default y if SPARC32
  74
  75 config GENERIC_CMOS_UPDATE
  76         bool
  77         default y
  78
  79 config GENERIC_CLOCKEVENTS
  80         bool
  81         default y 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 (does not work on sun4/sun4c)"
 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 source "kernel/time/Kconfig"
 274
 275 if SPARC64
 276 source "drivers/cpufreq/Kconfig"
 277
 278 config US3_FREQ
 279         tristate "UltraSPARC-III CPU Frequency driver"
 280         depends on CPU_FREQ
 281         select CPU_FREQ_TABLE
 282         help
 283           This adds the CPUFreq driver for UltraSPARC-III processors.
 284
 285           For details, take a look at <file:Documentation/cpu-freq>.
 286
 287           If in doubt, say N.
 288
 289 config US2E_FREQ
 290         tristate "UltraSPARC-IIe CPU Frequency driver"
 291         depends on CPU_FREQ
 292         select CPU_FREQ_TABLE
 293         help
 294           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 295
 296           For details, take a look at <file:Documentation/cpu-freq>.
 297
 298           If in doubt, say N.
 299
 300 endif
 301
 302 config US3_MC
 303         tristate "UltraSPARC-III Memory Controller driver"
 304         depends on SPARC64
 305         default y
 306         help
 307           This adds a driver for the UltraSPARC-III memory controller.
 308           Loading this driver allows exact mnemonic strings to be
 309           printed in the event of a memory error, so that the faulty DIMM
 310           on the motherboard can be matched to the error.
 311
 312           If in doubt, say Y, as this information can be very useful.
 313
 314 # Global things across all Sun machines.
 315 config GENERIC_LOCKBREAK
 316         bool
 317         default y
 318         depends on SPARC64 && SMP && PREEMPT
 319
 320 choice
 321         prompt "SPARC64 Huge TLB Page Size"
 322         depends on SPARC64 && HUGETLB_PAGE
 323         default HUGETLB_PAGE_SIZE_4MB
 324
 325 config HUGETLB_PAGE_SIZE_4MB
 326         bool "4MB"
 327
 328 config HUGETLB_PAGE_SIZE_512K
 329         bool "512K"
 330
 331 config HUGETLB_PAGE_SIZE_64K
 332         depends on !SPARC64_PAGE_SIZE_64KB
 333         bool "64K"
 334
 335 endchoice
 336
 337 config NUMA
 338         bool "NUMA support"
 339         depends on SPARC64 && SMP
 340
 341 config NODES_SHIFT
 342         int
 343         default "4"
 344         depends on NEED_MULTIPLE_NODES
 345
 346 # Some NUMA nodes have memory ranges that span
 347 # other nodes.  Even though a pfn is valid and
 348 # between a node's start and end pfns, it may not
 349 # reside on that node.  See memmap_init_zone()
 350 # for details.
 351 config NODES_SPAN_OTHER_NODES
 352         def_bool y
 353         depends on NEED_MULTIPLE_NODES
 354
 355 config ARCH_POPULATES_NODE_MAP
 356         def_bool y if SPARC64
 357
 358 config ARCH_SELECT_MEMORY_MODEL
 359         def_bool y if SPARC64
 360
 361 config ARCH_SPARSEMEM_ENABLE
 362         def_bool y if SPARC64
 363         select SPARSEMEM_VMEMMAP_ENABLE
 364
 365 config ARCH_SPARSEMEM_DEFAULT
 366         def_bool y if SPARC64
 367
 368 source "mm/Kconfig"
 369
 370 config SCHED_SMT
 371         bool "SMT (Hyperthreading) scheduler support"
 372         depends on SPARC64 && SMP
 373         default y
 374         help
 375           SMT scheduler support improves the CPU scheduler's decision making
 376           when dealing with SPARC cpus at a cost of slightly increased overhead
 377           in some places. If unsure say N here.
 378
 379 config SCHED_MC
 380         bool "Multi-core scheduler support"
 381         depends on SPARC64 && SMP
 382         default y
 383         help
 384           Multi-core scheduler support improves the CPU scheduler's decision
 385           making when dealing with multi-core CPU chips at a cost of slightly
 386           increased overhead in some places. If unsure say N here.
 387
 388 if SPARC64
 389 source "kernel/Kconfig.preempt"
 390 endif
 391
 392 config CMDLINE_BOOL
 393         bool "Default bootloader kernel arguments"
 394         depends on SPARC64
 395
 396 config CMDLINE
 397         string "Initial kernel command string"
 398         depends on CMDLINE_BOOL
 399         default "console=ttyS0,9600 root=/dev/sda1"
 400         help
 401           Say Y here if you want to be able to pass default arguments to
 402           the kernel. This will be overridden by the bootloader, if you
 403           use one (such as SILO). This is most useful if you want to boot
 404           a kernel from TFTP, and want default options to be available
 405           with having them passed on the command line.
 406
 407           NOTE: This option WILL override the PROM bootargs setting!
 408
 409 config SUN_PM
 410         bool
 411         default y if SPARC32
 412         help
 413           Enable power management and CPU standby features on supported
 414           SPARC platforms.
 415
 416 config SPARC_LED
 417         tristate "Sun4m LED driver"
 418         depends on SPARC32
 419         help
 420           This driver toggles the front-panel LED on sun4m systems
 421           in a user-specifiable manner.  Its state can be probed
 422           by reading /proc/led and its blinking mode can be changed
 423           via writes to /proc/led
 424
 425 config SERIAL_CONSOLE
 426         bool
 427         depends on SPARC32
 428         default y
 429         ---help---
 430           If you say Y here, it will be possible to use a serial port as the
 431           system console (the system console is the device which receives all
 432           kernel messages and warnings and which allows logins in single user
 433           mode). This could be useful if some terminal or printer is connected
 434           to that serial port.
 435
 436           Even if you say Y here, the currently visible virtual console
 437           (/dev/tty0) will still be used as the system console by default, but
 438           you can alter that using a kernel command line option such as
 439           "console=ttyS1". (Try "man bootparam" or see the documentation of
 440           your boot loader (silo) about how to pass options to the kernel at
 441           boot time.)
 442
 443           If you don't have a graphics card installed and you say Y here, the
 444           kernel will automatically use the first serial line, /dev/ttyS0, as
 445           system console.
 446
 447           If unsure, say N.
 448
 449 config SPARC_LEON
 450         bool "Sparc Leon processor family"
 451         depends on SPARC32
 452         ---help---
 453           If you say Y here if you are running on a SPARC-LEON processor.
 454           The LEON processor is a synthesizable VHDL model of the
 455           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 456           IP cores that are distributed under GPL. GRLIB can be downloaded
 457           from www.gaisler.com. You can download a sparc-linux cross-compilation
 458           toolchain at www.gaisler.com.
 459
 460 if SPARC_LEON
 461 menu "U-Boot options"
 462
 463 config UBOOT_LOAD_ADDR
 464         hex "uImage Load Address"
 465         default 0x40004000
 466         ---help---
 467          U-Boot kernel load address, the address in physical address space
 468          where u-boot will place the Linux kernel before booting it.
 469          This address is normally the base address of main memory + 0x4000.
 470
 471 config UBOOT_FLASH_ADDR
 472         hex "uImage.o Load Address"
 473         default 0x00080000
 474         ---help---
 475          Optional setting only affecting the uImage.o ELF-image used to
 476          download the uImage file to the target using a ELF-loader other than
 477          U-Boot. It may for example be used to download an uImage to FLASH with
 478          the GRMON utility before even starting u-boot.
 479
 480 config UBOOT_ENTRY_ADDR
 481         hex "uImage Entry Address"
 482         default 0xf0004000
 483         ---help---
 484          Do not change this unless you know what you're doing. This is
 485          hardcoded by the SPARC32 and LEON port.
 486
 487          This is the virtual address u-boot jumps to when booting the Linux
 488          Kernel.
 489
 490 endmenu
 491 endif
 492
 493 endmenu
 494
 495 menu "Bus options (PCI etc.)"
 496 config SBUS
 497         bool
 498         default y
 499
 500 config SBUSCHAR
 501         bool
 502         default y
 503
 504 config SUN_LDOMS
 505         bool "Sun Logical Domains support"
 506         depends on SPARC64
 507         help
 508           Say Y here is you want to support virtual devices via
 509           Logical Domains.
 510
 511 config PCI
 512         bool "Support for PCI and PS/2 keyboard/mouse"
 513         help
 514           Find out whether your system includes a PCI bus. PCI is the name of
 515           a bus system, i.e. the way the CPU talks to the other stuff inside
 516           your box.  If you say Y here, the kernel will include drivers and
 517           infrastructure code to support PCI bus devices.
 518
 519           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 520           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 521           All of these platforms are extremely obscure, so say N if unsure.
 522
 523 config PCI_DOMAINS
 524         def_bool PCI if SPARC64
 525
 526 config PCI_SYSCALL
 527         def_bool PCI
 528
 529 config PCIC_PCI
 530         bool
 531         depends on PCI && SPARC32 && !SPARC_LEON
 532         default y
 533
 534 config LEON_PCI
 535         bool
 536         depends on PCI && SPARC_LEON
 537         default y
 538
 539 config GRPCI2
 540         bool "GRPCI2 Host Bridge Support"
 541         depends on LEON_PCI
 542         default y
 543         help
 544           Say Y here to include the GRPCI2 Host Bridge Driver.
 545
 546 source "drivers/pci/Kconfig"
 547
 548 source "drivers/pcmcia/Kconfig"
 549
 550 config SUN_OPENPROMFS
 551         tristate "Openprom tree appears in /proc/openprom"
 552         help
 553           If you say Y, the OpenPROM device tree will be available as a
 554           virtual file system, which you can mount to /proc/openprom by "mount
 555           -t openpromfs none /proc/openprom".
 556
 557           To compile the /proc/openprom support as a module, choose M here: the
 558           module will be called openpromfs.
 559
 560           Only choose N if you know in advance that you will not need to modify
 561           OpenPROM settings on the running system.
 562
 563 # Makefile helper
 564 config SPARC64_PCI
 565         bool
 566         default y
 567         depends on SPARC64 && PCI
 568
 569 endmenu
 570
 571 menu "Executable file formats"
 572
 573 source "fs/Kconfig.binfmt"
 574
 575 config COMPAT
 576         bool
 577         depends on SPARC64
 578         default y
 579         select COMPAT_BINFMT_ELF
 580
 581 config SYSVIPC_COMPAT
 582         bool
 583         depends on COMPAT && SYSVIPC
 584         default y
 585
 586 endmenu
 587
 588 source "net/Kconfig"
 589
 590 source "drivers/Kconfig"
 591
 592 source "drivers/sbus/char/Kconfig"
 593
 594 source "fs/Kconfig"
 595
 596 source "arch/sparc/Kconfig.debug"
 597
 598 source "security/Kconfig"
 599
 600 source "crypto/Kconfig"
 601
 602 source "lib/Kconfig"