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_HARDIRQS_NO_DEPRECATED
  30         select GENERIC_IRQ_SHOW
  31         select USE_GENERIC_SMP_HELPERS if SMP
  32
  33 config SPARC32
  34         def_bool !64BIT
  35
  36 config SPARC64
  37         def_bool 64BIT
  38         select ARCH_SUPPORTS_MSI
  39         select HAVE_FUNCTION_TRACER
  40         select HAVE_FUNCTION_GRAPH_TRACER
  41         select HAVE_FUNCTION_GRAPH_FP_TEST
  42         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  43         select HAVE_KRETPROBES
  44         select HAVE_KPROBES
  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
  58 config ARCH_DEFCONFIG
  59         string
  60         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  61         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  62
  63 # CONFIG_BITS can be used at source level to get 32/64 bits
  64 config BITS
  65         int
  66         default 32 if SPARC32
  67         default 64 if SPARC64
  68
  69 config ARCH_USES_GETTIMEOFFSET
  70         bool
  71         default y if SPARC32
  72
  73 config GENERIC_CMOS_UPDATE
  74         bool
  75         default y
  76
  77 config GENERIC_CLOCKEVENTS
  78         bool
  79         default y if SPARC64
  80
  81 config IOMMU_HELPER
  82         bool
  83         default y if SPARC64
  84
  85 config QUICKLIST
  86         bool
  87         default y if SPARC64
  88
  89 config STACKTRACE_SUPPORT
  90         bool
  91         default y if SPARC64
  92
  93 config LOCKDEP_SUPPORT
  94         bool
  95         default y if SPARC64
  96
  97 config HAVE_LATENCYTOP_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config AUDIT_ARCH
 102         bool
 103         default y
 104
 105 config HAVE_SETUP_PER_CPU_AREA
 106         def_bool y if SPARC64
 107
 108 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 109         def_bool y if SPARC64
 110
 111 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 112         def_bool y if SPARC64
 113
 114 config MMU
 115         bool
 116         default y
 117
 118 config HIGHMEM
 119         bool
 120         default y if SPARC32
 121
 122 config ZONE_DMA
 123         bool
 124         default y if SPARC32
 125
 126 config NEED_DMA_MAP_STATE
 127         def_bool y
 128
 129 config NEED_SG_DMA_LENGTH
 130         def_bool y
 131
 132 config GENERIC_ISA_DMA
 133         bool
 134         default y if SPARC32
 135
 136 config GENERIC_GPIO
 137         bool
 138         help
 139           Generic GPIO API support
 140
 141 config ARCH_NO_VIRT_TO_BUS
 142         def_bool y
 143
 144 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 145         def_bool y if SPARC64
 146
 147 source "init/Kconfig"
 148
 149 source "kernel/Kconfig.freezer"
 150
 151 menu "Processor type and features"
 152
 153 config SMP
 154         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 155         ---help---
 156           This enables support for systems with more than one CPU. If you have
 157           a system with only one CPU, say N. If you have a system with more
 158           than one CPU, say Y.
 159
 160           If you say N here, the kernel will run on single and multiprocessor
 161           machines, but will use only one CPU of a multiprocessor machine. If
 162           you say Y here, the kernel will run on many, but not all,
 163           singleprocessor machines. On a singleprocessor machine, the kernel
 164           will run faster if you say N here.
 165
 166           People using multiprocessor machines who say Y here should also say
 167           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 168           Management" code will be disabled if you say Y here.
 169
 170           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 171           available at <http://www.tldp.org/docs.html#howto>.
 172
 173           If you don't know what to do here, say N.
 174
 175 config NR_CPUS
 176         int "Maximum number of CPUs"
 177         depends on SMP
 178         range 2 32 if SPARC32
 179         range 2 1024 if SPARC64
 180         default 32 if SPARC32
 181         default 64 if SPARC64
 182
 183 source kernel/Kconfig.hz
 184
 185 config RWSEM_GENERIC_SPINLOCK
 186         bool
 187         default y if SPARC32
 188
 189 config RWSEM_XCHGADD_ALGORITHM
 190         bool
 191         default y if SPARC64
 192
 193 config GENERIC_HWEIGHT
 194         bool
 195         default y if !ULTRA_HAS_POPULATION_COUNT
 196
 197 config GENERIC_CALIBRATE_DELAY
 198         bool
 199         default y
 200
 201 config ARCH_MAY_HAVE_PC_FDC
 202         bool
 203         default y
 204
 205 config EMULATED_CMPXCHG
 206         bool
 207         default y if SPARC32
 208         help
 209           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 210           is emulated, and therefore it is not completely atomic.
 211
 212 # Makefile helpers
 213 config SPARC32_SMP
 214         bool
 215         default y
 216         depends on SPARC32 && SMP
 217
 218 config SPARC64_SMP
 219         bool
 220         default y
 221         depends on SPARC64 && SMP
 222
 223 config EARLYFB
 224         bool "Support for early boot text console"
 225         default y
 226         depends on SPARC64
 227         help
 228           Say Y here to enable a faster early framebuffer boot console.
 229
 230 choice
 231         prompt "Kernel page size" if SPARC64
 232         default SPARC64_PAGE_SIZE_8KB
 233
 234 config SPARC64_PAGE_SIZE_8KB
 235         bool "8KB"
 236         help
 237           This lets you select the page size of the kernel.
 238
 239           8KB and 64KB work quite well, since SPARC ELF sections
 240           provide for up to 64KB alignment.
 241
 242           If you don't know what to do, choose 8KB.
 243
 244 config SPARC64_PAGE_SIZE_64KB
 245         bool "64KB"
 246
 247 endchoice
 248
 249 config SECCOMP
 250         bool "Enable seccomp to safely compute untrusted bytecode"
 251         depends on SPARC64 && PROC_FS
 252         default y
 253         help
 254           This kernel feature is useful for number crunching applications
 255           that may need to compute untrusted bytecode during their
 256           execution. By using pipes or other transports made available to
 257           the process as file descriptors supporting the read/write
 258           syscalls, it's possible to isolate those applications in
 259           their own address space using seccomp. Once seccomp is
 260           enabled via /proc/<pid>/seccomp, it cannot be disabled
 261           and the task is only allowed to execute a few safe syscalls
 262           defined by each seccomp mode.
 263
 264           If unsure, say Y. Only embedded should say N here.
 265
 266 config HOTPLUG_CPU
 267         bool "Support for hot-pluggable CPUs"
 268         depends on SPARC64 && SMP
 269         select HOTPLUG
 270         help
 271           Say Y here to experiment with turning CPUs off and on.  CPUs
 272           can be controlled through /sys/devices/system/cpu/cpu#.
 273           Say N if you want to disable CPU hotplug.
 274
 275 source "kernel/time/Kconfig"
 276
 277 if SPARC64
 278 source "drivers/cpufreq/Kconfig"
 279
 280 config US3_FREQ
 281         tristate "UltraSPARC-III CPU Frequency driver"
 282         depends on CPU_FREQ
 283         select CPU_FREQ_TABLE
 284         help
 285           This adds the CPUFreq driver for UltraSPARC-III processors.
 286
 287           For details, take a look at <file:Documentation/cpu-freq>.
 288
 289           If in doubt, say N.
 290
 291 config US2E_FREQ
 292         tristate "UltraSPARC-IIe CPU Frequency driver"
 293         depends on CPU_FREQ
 294         select CPU_FREQ_TABLE
 295         help
 296           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 297
 298           For details, take a look at <file:Documentation/cpu-freq>.
 299
 300           If in doubt, say N.
 301
 302 endif
 303
 304 config US3_MC
 305         tristate "UltraSPARC-III Memory Controller driver"
 306         depends on SPARC64
 307         default y
 308         help
 309           This adds a driver for the UltraSPARC-III memory controller.
 310           Loading this driver allows exact mnemonic strings to be
 311           printed in the event of a memory error, so that the faulty DIMM
 312           on the motherboard can be matched to the error.
 313
 314           If in doubt, say Y, as this information can be very useful.
 315
 316 # Global things across all Sun machines.
 317 config GENERIC_LOCKBREAK
 318         bool
 319         default y
 320         depends on SPARC64 && SMP && PREEMPT
 321
 322 choice
 323         prompt "SPARC64 Huge TLB Page Size"
 324         depends on SPARC64 && HUGETLB_PAGE
 325         default HUGETLB_PAGE_SIZE_4MB
 326
 327 config HUGETLB_PAGE_SIZE_4MB
 328         bool "4MB"
 329
 330 config HUGETLB_PAGE_SIZE_512K
 331         bool "512K"
 332
 333 config HUGETLB_PAGE_SIZE_64K
 334         depends on !SPARC64_PAGE_SIZE_64KB
 335         bool "64K"
 336
 337 endchoice
 338
 339 config NUMA
 340         bool "NUMA support"
 341         depends on SPARC64 && SMP
 342
 343 config NODES_SHIFT
 344         int
 345         default "4"
 346         depends on NEED_MULTIPLE_NODES
 347
 348 # Some NUMA nodes have memory ranges that span
 349 # other nodes.  Even though a pfn is valid and
 350 # between a node's start and end pfns, it may not
 351 # reside on that node.  See memmap_init_zone()
 352 # for details.
 353 config NODES_SPAN_OTHER_NODES
 354         def_bool y
 355         depends on NEED_MULTIPLE_NODES
 356
 357 config ARCH_POPULATES_NODE_MAP
 358         def_bool y if SPARC64
 359
 360 config ARCH_SELECT_MEMORY_MODEL
 361         def_bool y if SPARC64
 362
 363 config ARCH_SPARSEMEM_ENABLE
 364         def_bool y if SPARC64
 365         select SPARSEMEM_VMEMMAP_ENABLE
 366
 367 config ARCH_SPARSEMEM_DEFAULT
 368         def_bool y if SPARC64
 369
 370 source "mm/Kconfig"
 371
 372 config SCHED_SMT
 373         bool "SMT (Hyperthreading) scheduler support"
 374         depends on SPARC64 && SMP
 375         default y
 376         help
 377           SMT scheduler support improves the CPU scheduler's decision making
 378           when dealing with SPARC cpus at a cost of slightly increased overhead
 379           in some places. If unsure say N here.
 380
 381 config SCHED_MC
 382         bool "Multi-core scheduler support"
 383         depends on SPARC64 && SMP
 384         default y
 385         help
 386           Multi-core scheduler support improves the CPU scheduler's decision
 387           making when dealing with multi-core CPU chips at a cost of slightly
 388           increased overhead in some places. If unsure say N here.
 389
 390 if SPARC64
 391 source "kernel/Kconfig.preempt"
 392 endif
 393
 394 config CMDLINE_BOOL
 395         bool "Default bootloader kernel arguments"
 396         depends on SPARC64
 397
 398 config CMDLINE
 399         string "Initial kernel command string"
 400         depends on CMDLINE_BOOL
 401         default "console=ttyS0,9600 root=/dev/sda1"
 402         help
 403           Say Y here if you want to be able to pass default arguments to
 404           the kernel. This will be overridden by the bootloader, if you
 405           use one (such as SILO). This is most useful if you want to boot
 406           a kernel from TFTP, and want default options to be available
 407           with having them passed on the command line.
 408
 409           NOTE: This option WILL override the PROM bootargs setting!
 410
 411 config SUN_PM
 412         bool
 413         default y if SPARC32
 414         help
 415           Enable power management and CPU standby features on supported
 416           SPARC platforms.
 417
 418 config SPARC_LED
 419         tristate "Sun4m LED driver"
 420         depends on SPARC32
 421         help
 422           This driver toggles the front-panel LED on sun4m systems
 423           in a user-specifiable manner.  Its state can be probed
 424           by reading /proc/led and its blinking mode can be changed
 425           via writes to /proc/led
 426
 427 config SERIAL_CONSOLE
 428         bool
 429         depends on SPARC32
 430         default y
 431         ---help---
 432           If you say Y here, it will be possible to use a serial port as the
 433           system console (the system console is the device which receives all
 434           kernel messages and warnings and which allows logins in single user
 435           mode). This could be useful if some terminal or printer is connected
 436           to that serial port.
 437
 438           Even if you say Y here, the currently visible virtual console
 439           (/dev/tty0) will still be used as the system console by default, but
 440           you can alter that using a kernel command line option such as
 441           "console=ttyS1". (Try "man bootparam" or see the documentation of
 442           your boot loader (silo) about how to pass options to the kernel at
 443           boot time.)
 444
 445           If you don't have a graphics card installed and you say Y here, the
 446           kernel will automatically use the first serial line, /dev/ttyS0, as
 447           system console.
 448
 449           If unsure, say N.
 450
 451 config SPARC_LEON
 452         bool "Sparc Leon processor family"
 453         depends on SPARC32
 454         ---help---
 455           If you say Y here if you are running on a SPARC-LEON processor.
 456           The LEON processor is a synthesizable VHDL model of the
 457           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 458           IP cores that are distributed under GPL. GRLIB can be downloaded
 459           from www.gaisler.com. You can download a sparc-linux cross-compilation
 460           toolchain at www.gaisler.com.
 461
 462 if SPARC_LEON
 463 menu "U-Boot options"
 464
 465 config UBOOT_LOAD_ADDR
 466         hex "uImage Load Address"
 467         default 0x40004000
 468         ---help---
 469          U-Boot kernel load address, the address in physical address space
 470          where u-boot will place the Linux kernel before booting it.
 471          This address is normally the base address of main memory + 0x4000.
 472
 473 config UBOOT_FLASH_ADDR
 474         hex "uImage.o Load Address"
 475         default 0x00080000
 476         ---help---
 477          Optional setting only affecting the uImage.o ELF-image used to
 478          download the uImage file to the target using a ELF-loader other than
 479          U-Boot. It may for example be used to download an uImage to FLASH with
 480          the GRMON utility before even starting u-boot.
 481
 482 config UBOOT_ENTRY_ADDR
 483         hex "uImage Entry Address"
 484         default 0xf0004000
 485         ---help---
 486          Do not change this unless you know what you're doing. This is
 487          hardcoded by the SPARC32 and LEON port.
 488
 489          This is the virtual address u-boot jumps to when booting the Linux
 490          Kernel.
 491
 492 endmenu
 493 endif
 494
 495 endmenu
 496
 497 menu "Bus options (PCI etc.)"
 498 config SBUS
 499         bool
 500         default y
 501
 502 config SBUSCHAR
 503         bool
 504         default y
 505
 506 config SUN_LDOMS
 507         bool "Sun Logical Domains support"
 508         depends on SPARC64
 509         help
 510           Say Y here is you want to support virtual devices via
 511           Logical Domains.
 512
 513 config PCI
 514         bool "Support for PCI and PS/2 keyboard/mouse"
 515         help
 516           Find out whether your system includes a PCI bus. PCI is the name of
 517           a bus system, i.e. the way the CPU talks to the other stuff inside
 518           your box.  If you say Y here, the kernel will include drivers and
 519           infrastructure code to support PCI bus devices.
 520
 521           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 522           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 523           All of these platforms are extremely obscure, so say N if unsure.
 524
 525 config PCI_DOMAINS
 526         def_bool PCI if SPARC64
 527
 528 config PCI_SYSCALL
 529         def_bool PCI
 530
 531 source "drivers/pci/Kconfig"
 532
 533 source "drivers/pcmcia/Kconfig"
 534
 535 config SUN_OPENPROMFS
 536         tristate "Openprom tree appears in /proc/openprom"
 537         help
 538           If you say Y, the OpenPROM device tree will be available as a
 539           virtual file system, which you can mount to /proc/openprom by "mount
 540           -t openpromfs none /proc/openprom".
 541
 542           To compile the /proc/openprom support as a module, choose M here: the
 543           module will be called openpromfs.
 544
 545           Only choose N if you know in advance that you will not need to modify
 546           OpenPROM settings on the running system.
 547
 548 # Makefile helpers
 549 config SPARC32_PCI
 550         bool
 551         default y
 552         depends on SPARC32 && PCI
 553
 554 config SPARC64_PCI
 555         bool
 556         default y
 557         depends on SPARC64 && PCI
 558
 559 endmenu
 560
 561 menu "Executable file formats"
 562
 563 source "fs/Kconfig.binfmt"
 564
 565 config COMPAT
 566         bool
 567         depends on SPARC64
 568         default y
 569         select COMPAT_BINFMT_ELF
 570
 571 config SYSVIPC_COMPAT
 572         bool
 573         depends on COMPAT && SYSVIPC
 574         default y
 575
 576 endmenu
 577
 578 source "net/Kconfig"
 579
 580 source "drivers/Kconfig"
 581
 582 source "drivers/sbus/char/Kconfig"
 583
 584 source "fs/Kconfig"
 585
 586 source "arch/sparc/Kconfig.debug"
 587
 588 source "security/Kconfig"
 589
 590 source "crypto/Kconfig"
 591
 592 source "lib/Kconfig"