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 SYSCTL_EXCEPTION_TRACE
  22         select ARCH_WANT_OPTIONAL_GPIOLIB
  23         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  24         select RTC_CLASS
  25         select RTC_DRV_M48T59
  26         select HAVE_DMA_ATTRS
  27         select HAVE_DMA_API_DEBUG
  28         select HAVE_ARCH_JUMP_LABEL
  29         select HAVE_GENERIC_HARDIRQS
  30         select GENERIC_IRQ_SHOW
  31         select ARCH_WANT_IPC_PARSE_VERSION
  32         select USE_GENERIC_SMP_HELPERS if SMP
  33         select GENERIC_PCI_IOMAP
  34         select HAVE_NMI_WATCHDOG if SPARC64
  35         select HAVE_BPF_JIT
  36         select HAVE_DEBUG_BUGVERBOSE
  37         select GENERIC_SMP_IDLE_THREAD
  38         select GENERIC_CMOS_UPDATE
  39         select GENERIC_CLOCKEVENTS
  40         select GENERIC_STRNCPY_FROM_USER
  41         select GENERIC_STRNLEN_USER
  42         select MODULES_USE_ELF_RELA
  43         select ODD_RT_SIGACTION
  44         select OLD_SIGSUSPEND
  45
  46 config SPARC32
  47         def_bool !64BIT
  48         select GENERIC_ATOMIC64
  49         select CLZ_TAB
  50         select HAVE_UID16
  51         select OLD_SIGACTION
  52
  53 config SPARC64
  54         def_bool 64BIT
  55         select ARCH_SUPPORTS_MSI
  56         select HAVE_FUNCTION_TRACER
  57         select HAVE_FUNCTION_GRAPH_TRACER
  58         select HAVE_FUNCTION_GRAPH_FP_TEST
  59         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  60         select HAVE_KRETPROBES
  61         select HAVE_KPROBES
  62         select HAVE_RCU_TABLE_FREE if SMP
  63         select HAVE_MEMBLOCK
  64         select HAVE_MEMBLOCK_NODE_MAP
  65         select HAVE_SYSCALL_WRAPPERS
  66         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  67         select HAVE_DYNAMIC_FTRACE
  68         select HAVE_FTRACE_MCOUNT_RECORD
  69         select HAVE_SYSCALL_TRACEPOINTS
  70         select HAVE_DEBUG_KMEMLEAK
  71         select RTC_DRV_CMOS
  72         select RTC_DRV_BQ4802
  73         select RTC_DRV_SUN4V
  74         select RTC_DRV_STARFIRE
  75         select HAVE_PERF_EVENTS
  76         select PERF_USE_VMALLOC
  77         select IRQ_PREFLOW_FASTEOI
  78         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  79         select HAVE_C_RECORDMCOUNT
  80         select NO_BOOTMEM
  81
  82 config ARCH_DEFCONFIG
  83         string
  84         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  85         default "arch/sparc/configs/sparc64_defconfig" 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_SUPPORTS_DEBUG_PAGEALLOC
 144         def_bool y if SPARC64
 145
 146 source "init/Kconfig"
 147
 148 source "kernel/Kconfig.freezer"
 149
 150 menu "Processor type and features"
 151
 152 config 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
 174 config 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
 182 source kernel/Kconfig.hz
 183
 184 config RWSEM_GENERIC_SPINLOCK
 185         bool
 186         default y if SPARC32
 187
 188 config RWSEM_XCHGADD_ALGORITHM
 189         bool
 190         default y if SPARC64
 191
 192 config GENERIC_HWEIGHT
 193         bool
 194         default y
 195
 196 config GENERIC_CALIBRATE_DELAY
 197         bool
 198         default y
 199
 200 config ARCH_MAY_HAVE_PC_FDC
 201         bool
 202         default y
 203
 204 config 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
 212 config SPARC32_SMP
 213         bool
 214         default y
 215         depends on SPARC32 && SMP
 216
 217 config SPARC64_SMP
 218         bool
 219         default y
 220         depends on SPARC64 && SMP
 221
 222 config 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
 229 config SECCOMP
 230         bool "Enable seccomp to safely compute untrusted bytecode"
 231         depends on SPARC64 && PROC_FS
 232         default y
 233         help
 234           This kernel feature is useful for number crunching applications
 235           that may need to compute untrusted bytecode during their
 236           execution. By using pipes or other transports made available to
 237           the process as file descriptors supporting the read/write
 238           syscalls, it's possible to isolate those applications in
 239           their own address space using seccomp. Once seccomp is
 240           enabled via /proc/<pid>/seccomp, it cannot be disabled
 241           and the task is only allowed to execute a few safe syscalls
 242           defined by each seccomp mode.
 243
 244           If unsure, say Y. Only embedded should say N here.
 245
 246 config HOTPLUG_CPU
 247         bool "Support for hot-pluggable CPUs"
 248         depends on SPARC64 && SMP
 249         select HOTPLUG
 250         help
 251           Say Y here to experiment with turning CPUs off and on.  CPUs
 252           can be controlled through /sys/devices/system/cpu/cpu#.
 253           Say N if you want to disable CPU hotplug.
 254
 255 if SPARC64
 256 source "drivers/cpufreq/Kconfig"
 257
 258 config US3_FREQ
 259         tristate "UltraSPARC-III CPU Frequency driver"
 260         depends on CPU_FREQ
 261         select CPU_FREQ_TABLE
 262         help
 263           This adds the CPUFreq driver for UltraSPARC-III processors.
 264
 265           For details, take a look at <file:Documentation/cpu-freq>.
 266
 267           If in doubt, say N.
 268
 269 config US2E_FREQ
 270         tristate "UltraSPARC-IIe CPU Frequency driver"
 271         depends on CPU_FREQ
 272         select CPU_FREQ_TABLE
 273         help
 274           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 275
 276           For details, take a look at <file:Documentation/cpu-freq>.
 277
 278           If in doubt, say N.
 279
 280 endif
 281
 282 config US3_MC
 283         tristate "UltraSPARC-III Memory Controller driver"
 284         depends on SPARC64
 285         default y
 286         help
 287           This adds a driver for the UltraSPARC-III memory controller.
 288           Loading this driver allows exact mnemonic strings to be
 289           printed in the event of a memory error, so that the faulty DIMM
 290           on the motherboard can be matched to the error.
 291
 292           If in doubt, say Y, as this information can be very useful.
 293
 294 # Global things across all Sun machines.
 295 config GENERIC_LOCKBREAK
 296         bool
 297         default y
 298         depends on SPARC64 && SMP && PREEMPT
 299
 300 config NUMA
 301         bool "NUMA support"
 302         depends on SPARC64 && SMP
 303
 304 config NODES_SHIFT
 305         int
 306         default "4"
 307         depends on NEED_MULTIPLE_NODES
 308
 309 # Some NUMA nodes have memory ranges that span
 310 # other nodes.  Even though a pfn is valid and
 311 # between a node's start and end pfns, it may not
 312 # reside on that node.  See memmap_init_zone()
 313 # for details.
 314 config NODES_SPAN_OTHER_NODES
 315         def_bool y
 316         depends on NEED_MULTIPLE_NODES
 317
 318 config ARCH_SELECT_MEMORY_MODEL
 319         def_bool y if SPARC64
 320
 321 config ARCH_SPARSEMEM_ENABLE
 322         def_bool y if SPARC64
 323         select SPARSEMEM_VMEMMAP_ENABLE
 324
 325 config ARCH_SPARSEMEM_DEFAULT
 326         def_bool y if SPARC64
 327
 328 source "mm/Kconfig"
 329
 330 config SCHED_SMT
 331         bool "SMT (Hyperthreading) scheduler support"
 332         depends on SPARC64 && SMP
 333         default y
 334         help
 335           SMT scheduler support improves the CPU scheduler's decision making
 336           when dealing with SPARC cpus at a cost of slightly increased overhead
 337           in some places. If unsure say N here.
 338
 339 config SCHED_MC
 340         bool "Multi-core scheduler support"
 341         depends on SPARC64 && SMP
 342         default y
 343         help
 344           Multi-core scheduler support improves the CPU scheduler's decision
 345           making when dealing with multi-core CPU chips at a cost of slightly
 346           increased overhead in some places. If unsure say N here.
 347
 348 source "kernel/Kconfig.preempt"
 349
 350 config CMDLINE_BOOL
 351         bool "Default bootloader kernel arguments"
 352         depends on SPARC64
 353
 354 config CMDLINE
 355         string "Initial kernel command string"
 356         depends on CMDLINE_BOOL
 357         default "console=ttyS0,9600 root=/dev/sda1"
 358         help
 359           Say Y here if you want to be able to pass default arguments to
 360           the kernel. This will be overridden by the bootloader, if you
 361           use one (such as SILO). This is most useful if you want to boot
 362           a kernel from TFTP, and want default options to be available
 363           with having them passed on the command line.
 364
 365           NOTE: This option WILL override the PROM bootargs setting!
 366
 367 config SUN_PM
 368         bool
 369         default y if SPARC32
 370         help
 371           Enable power management and CPU standby features on supported
 372           SPARC platforms.
 373
 374 config SPARC_LED
 375         tristate "Sun4m LED driver"
 376         depends on SPARC32
 377         help
 378           This driver toggles the front-panel LED on sun4m systems
 379           in a user-specifiable manner.  Its state can be probed
 380           by reading /proc/led and its blinking mode can be changed
 381           via writes to /proc/led
 382
 383 config SERIAL_CONSOLE
 384         bool
 385         depends on SPARC32
 386         default y
 387         ---help---
 388           If you say Y here, it will be possible to use a serial port as the
 389           system console (the system console is the device which receives all
 390           kernel messages and warnings and which allows logins in single user
 391           mode). This could be useful if some terminal or printer is connected
 392           to that serial port.
 393
 394           Even if you say Y here, the currently visible virtual console
 395           (/dev/tty0) will still be used as the system console by default, but
 396           you can alter that using a kernel command line option such as
 397           "console=ttyS1". (Try "man bootparam" or see the documentation of
 398           your boot loader (silo) about how to pass options to the kernel at
 399           boot time.)
 400
 401           If you don't have a graphics card installed and you say Y here, the
 402           kernel will automatically use the first serial line, /dev/ttyS0, as
 403           system console.
 404
 405           If unsure, say N.
 406
 407 config SPARC_LEON
 408         bool "Sparc Leon processor family"
 409         depends on SPARC32
 410         ---help---
 411           If you say Y here if you are running on a SPARC-LEON processor.
 412           The LEON processor is a synthesizable VHDL model of the
 413           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 414           IP cores that are distributed under GPL. GRLIB can be downloaded
 415           from www.gaisler.com. You can download a sparc-linux cross-compilation
 416           toolchain at www.gaisler.com.
 417
 418 if SPARC_LEON
 419 menu "U-Boot options"
 420
 421 config UBOOT_LOAD_ADDR
 422         hex "uImage Load Address"
 423         default 0x40004000
 424         ---help---
 425          U-Boot kernel load address, the address in physical address space
 426          where u-boot will place the Linux kernel before booting it.
 427          This address is normally the base address of main memory + 0x4000.
 428
 429 config UBOOT_FLASH_ADDR
 430         hex "uImage.o Load Address"
 431         default 0x00080000
 432         ---help---
 433          Optional setting only affecting the uImage.o ELF-image used to
 434          download the uImage file to the target using a ELF-loader other than
 435          U-Boot. It may for example be used to download an uImage to FLASH with
 436          the GRMON utility before even starting u-boot.
 437
 438 config UBOOT_ENTRY_ADDR
 439         hex "uImage Entry Address"
 440         default 0xf0004000
 441         ---help---
 442          Do not change this unless you know what you're doing. This is
 443          hardcoded by the SPARC32 and LEON port.
 444
 445          This is the virtual address u-boot jumps to when booting the Linux
 446          Kernel.
 447
 448 endmenu
 449 endif
 450
 451 endmenu
 452
 453 menu "Bus options (PCI etc.)"
 454 config SBUS
 455         bool
 456         default y
 457
 458 config SBUSCHAR
 459         bool
 460         default y
 461
 462 config SUN_LDOMS
 463         bool "Sun Logical Domains support"
 464         depends on SPARC64
 465         help
 466           Say Y here is you want to support virtual devices via
 467           Logical Domains.
 468
 469 config PCI
 470         bool "Support for PCI and PS/2 keyboard/mouse"
 471         help
 472           Find out whether your system includes a PCI bus. PCI is the name of
 473           a bus system, i.e. the way the CPU talks to the other stuff inside
 474           your box.  If you say Y here, the kernel will include drivers and
 475           infrastructure code to support PCI bus devices.
 476
 477           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 478           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 479           All of these platforms are extremely obscure, so say N if unsure.
 480
 481 config PCI_DOMAINS
 482         def_bool PCI if SPARC64
 483
 484 config PCI_SYSCALL
 485         def_bool PCI
 486
 487 config PCIC_PCI
 488         bool
 489         depends on PCI && SPARC32 && !SPARC_LEON
 490         default y
 491
 492 config LEON_PCI
 493         bool
 494         depends on PCI && SPARC_LEON
 495         default y
 496
 497 config GRPCI2
 498         bool "GRPCI2 Host Bridge Support"
 499         depends on LEON_PCI
 500         default y
 501         help
 502           Say Y here to include the GRPCI2 Host Bridge Driver.
 503
 504 source "drivers/pci/Kconfig"
 505
 506 source "drivers/pcmcia/Kconfig"
 507
 508 config SUN_OPENPROMFS
 509         tristate "Openprom tree appears in /proc/openprom"
 510         help
 511           If you say Y, the OpenPROM device tree will be available as a
 512           virtual file system, which you can mount to /proc/openprom by "mount
 513           -t openpromfs none /proc/openprom".
 514
 515           To compile the /proc/openprom support as a module, choose M here: the
 516           module will be called openpromfs.
 517
 518           Only choose N if you know in advance that you will not need to modify
 519           OpenPROM settings on the running system.
 520
 521 # Makefile helper
 522 config SPARC64_PCI
 523         bool
 524         default y
 525         depends on SPARC64 && PCI
 526
 527 endmenu
 528
 529 menu "Executable file formats"
 530
 531 source "fs/Kconfig.binfmt"
 532
 533 config COMPAT
 534         bool
 535         depends on SPARC64
 536         default y
 537         select COMPAT_BINFMT_ELF
 538         select HAVE_UID16
 539         select ARCH_WANT_OLD_COMPAT_IPC
 540         select COMPAT_OLD_SIGACTION
 541
 542 config SYSVIPC_COMPAT
 543         bool
 544         depends on COMPAT && SYSVIPC
 545         default y
 546
 547 config KEYS_COMPAT
 548         def_bool y if COMPAT && KEYS
 549
 550 endmenu
 551
 552 source "net/Kconfig"
 553
 554 source "drivers/Kconfig"
 555
 556 source "drivers/sbus/char/Kconfig"
 557
 558 source "fs/Kconfig"
 559
 560 source "arch/sparc/Kconfig.debug"
 561
 562 source "security/Kconfig"
 563
 564 source "crypto/Kconfig"
 565
 566 source "lib/Kconfig"