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_IRQ_WORK
  27         select HAVE_DMA_ATTRS
  28         select HAVE_DMA_API_DEBUG
  29         select HAVE_ARCH_JUMP_LABEL
  30         select HAVE_GENERIC_HARDIRQS
  31         select GENERIC_IRQ_SHOW
  32         select ARCH_WANT_IPC_PARSE_VERSION
  33         select USE_GENERIC_SMP_HELPERS if SMP
  34         select GENERIC_PCI_IOMAP
  35         select HAVE_NMI_WATCHDOG if SPARC64
  36         select HAVE_BPF_JIT
  37         select HAVE_DEBUG_BUGVERBOSE
  38         select GENERIC_SMP_IDLE_THREAD
  39         select GENERIC_CMOS_UPDATE
  40         select GENERIC_CLOCKEVENTS
  41         select GENERIC_STRNCPY_FROM_USER
  42         select GENERIC_STRNLEN_USER
  43         select MODULES_USE_ELF_RELA
  44
  45 config SPARC32
  46         def_bool !64BIT
  47         select GENERIC_ATOMIC64
  48         select CLZ_TAB
  49         select HAVE_UID16
  50
  51 config SPARC64
  52         def_bool 64BIT
  53         select ARCH_SUPPORTS_MSI
  54         select HAVE_FUNCTION_TRACER
  55         select HAVE_FUNCTION_GRAPH_TRACER
  56         select HAVE_FUNCTION_GRAPH_FP_TEST
  57         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  58         select HAVE_KRETPROBES
  59         select HAVE_KPROBES
  60         select HAVE_RCU_TABLE_FREE if SMP
  61         select HAVE_MEMBLOCK
  62         select HAVE_MEMBLOCK_NODE_MAP
  63         select HAVE_SYSCALL_WRAPPERS
  64         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  65         select HAVE_DYNAMIC_FTRACE
  66         select HAVE_FTRACE_MCOUNT_RECORD
  67         select HAVE_SYSCALL_TRACEPOINTS
  68         select HAVE_DEBUG_KMEMLEAK
  69         select RTC_DRV_CMOS
  70         select RTC_DRV_BQ4802
  71         select RTC_DRV_SUN4V
  72         select RTC_DRV_STARFIRE
  73         select HAVE_PERF_EVENTS
  74         select PERF_USE_VMALLOC
  75         select IRQ_PREFLOW_FASTEOI
  76         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  77         select HAVE_C_RECORDMCOUNT
  78         select NO_BOOTMEM
  79
  80 config ARCH_DEFCONFIG
  81         string
  82         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  83         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  84
  85 # CONFIG_BITS can be used at source level to get 32/64 bits
  86 config BITS
  87         int
  88         default 32 if SPARC32
  89         default 64 if SPARC64
  90
  91 config IOMMU_HELPER
  92         bool
  93         default y if SPARC64
  94
  95 config STACKTRACE_SUPPORT
  96         bool
  97         default y if SPARC64
  98
  99 config LOCKDEP_SUPPORT
 100         bool
 101         default y if SPARC64
 102
 103 config HAVE_LATENCYTOP_SUPPORT
 104         bool
 105         default y if SPARC64
 106
 107 config AUDIT_ARCH
 108         bool
 109         default y
 110
 111 config HAVE_SETUP_PER_CPU_AREA
 112         def_bool y if SPARC64
 113
 114 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 115         def_bool y if SPARC64
 116
 117 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 118         def_bool y if SPARC64
 119
 120 config MMU
 121         bool
 122         default y
 123
 124 config HIGHMEM
 125         bool
 126         default y if SPARC32
 127
 128 config ZONE_DMA
 129         bool
 130         default y if SPARC32
 131
 132 config NEED_DMA_MAP_STATE
 133         def_bool y
 134
 135 config NEED_SG_DMA_LENGTH
 136         def_bool y
 137
 138 config GENERIC_ISA_DMA
 139         bool
 140         default y if SPARC32
 141
 142 config GENERIC_GPIO
 143         bool
 144         help
 145           Generic GPIO API support
 146
 147 config ARCH_NO_VIRT_TO_BUS
 148         def_bool y
 149
 150 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 151         def_bool y if SPARC64
 152
 153 source "init/Kconfig"
 154
 155 source "kernel/Kconfig.freezer"
 156
 157 menu "Processor type and features"
 158
 159 config SMP
 160         bool "Symmetric multi-processing support"
 161         ---help---
 162           This enables support for systems with more than one CPU. If you have
 163           a system with only one CPU, say N. If you have a system with more
 164           than one CPU, say Y.
 165
 166           If you say N here, the kernel will run on single and multiprocessor
 167           machines, but will use only one CPU of a multiprocessor machine. If
 168           you say Y here, the kernel will run on many, but not all,
 169           singleprocessor machines. On a singleprocessor machine, the kernel
 170           will run faster if you say N here.
 171
 172           People using multiprocessor machines who say Y here should also say
 173           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 174           Management" code will be disabled if you say Y here.
 175
 176           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 177           available at <http://www.tldp.org/docs.html#howto>.
 178
 179           If you don't know what to do here, say N.
 180
 181 config NR_CPUS
 182         int "Maximum number of CPUs"
 183         depends on SMP
 184         range 2 32 if SPARC32
 185         range 2 1024 if SPARC64
 186         default 32 if SPARC32
 187         default 64 if SPARC64
 188
 189 source kernel/Kconfig.hz
 190
 191 config RWSEM_GENERIC_SPINLOCK
 192         bool
 193         default y if SPARC32
 194
 195 config RWSEM_XCHGADD_ALGORITHM
 196         bool
 197         default y if SPARC64
 198
 199 config GENERIC_HWEIGHT
 200         bool
 201         default y if !ULTRA_HAS_POPULATION_COUNT
 202
 203 config GENERIC_CALIBRATE_DELAY
 204         bool
 205         default y
 206
 207 config ARCH_MAY_HAVE_PC_FDC
 208         bool
 209         default y
 210
 211 config EMULATED_CMPXCHG
 212         bool
 213         default y if SPARC32
 214         help
 215           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 216           is emulated, and therefore it is not completely atomic.
 217
 218 # Makefile helpers
 219 config SPARC32_SMP
 220         bool
 221         default y
 222         depends on SPARC32 && SMP
 223
 224 config SPARC64_SMP
 225         bool
 226         default y
 227         depends on SPARC64 && SMP
 228
 229 config EARLYFB
 230         bool "Support for early boot text console"
 231         default y
 232         depends on SPARC64
 233         help
 234           Say Y here to enable a faster early framebuffer boot console.
 235
 236 config SECCOMP
 237         bool "Enable seccomp to safely compute untrusted bytecode"
 238         depends on SPARC64 && PROC_FS
 239         default y
 240         help
 241           This kernel feature is useful for number crunching applications
 242           that may need to compute untrusted bytecode during their
 243           execution. By using pipes or other transports made available to
 244           the process as file descriptors supporting the read/write
 245           syscalls, it's possible to isolate those applications in
 246           their own address space using seccomp. Once seccomp is
 247           enabled via /proc/<pid>/seccomp, it cannot be disabled
 248           and the task is only allowed to execute a few safe syscalls
 249           defined by each seccomp mode.
 250
 251           If unsure, say Y. Only embedded should say N here.
 252
 253 config HOTPLUG_CPU
 254         bool "Support for hot-pluggable CPUs"
 255         depends on SPARC64 && SMP
 256         select HOTPLUG
 257         help
 258           Say Y here to experiment with turning CPUs off and on.  CPUs
 259           can be controlled through /sys/devices/system/cpu/cpu#.
 260           Say N if you want to disable CPU hotplug.
 261
 262 if SPARC64
 263 source "drivers/cpufreq/Kconfig"
 264
 265 config US3_FREQ
 266         tristate "UltraSPARC-III CPU Frequency driver"
 267         depends on CPU_FREQ
 268         select CPU_FREQ_TABLE
 269         help
 270           This adds the CPUFreq driver for UltraSPARC-III processors.
 271
 272           For details, take a look at <file:Documentation/cpu-freq>.
 273
 274           If in doubt, say N.
 275
 276 config US2E_FREQ
 277         tristate "UltraSPARC-IIe CPU Frequency driver"
 278         depends on CPU_FREQ
 279         select CPU_FREQ_TABLE
 280         help
 281           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 282
 283           For details, take a look at <file:Documentation/cpu-freq>.
 284
 285           If in doubt, say N.
 286
 287 endif
 288
 289 config US3_MC
 290         tristate "UltraSPARC-III Memory Controller driver"
 291         depends on SPARC64
 292         default y
 293         help
 294           This adds a driver for the UltraSPARC-III memory controller.
 295           Loading this driver allows exact mnemonic strings to be
 296           printed in the event of a memory error, so that the faulty DIMM
 297           on the motherboard can be matched to the error.
 298
 299           If in doubt, say Y, as this information can be very useful.
 300
 301 # Global things across all Sun machines.
 302 config GENERIC_LOCKBREAK
 303         bool
 304         default y
 305         depends on SPARC64 && SMP && PREEMPT
 306
 307 config NUMA
 308         bool "NUMA support"
 309         depends on SPARC64 && SMP
 310
 311 config NODES_SHIFT
 312         int
 313         default "4"
 314         depends on NEED_MULTIPLE_NODES
 315
 316 # Some NUMA nodes have memory ranges that span
 317 # other nodes.  Even though a pfn is valid and
 318 # between a node's start and end pfns, it may not
 319 # reside on that node.  See memmap_init_zone()
 320 # for details.
 321 config NODES_SPAN_OTHER_NODES
 322         def_bool y
 323         depends on NEED_MULTIPLE_NODES
 324
 325 config ARCH_SELECT_MEMORY_MODEL
 326         def_bool y if SPARC64
 327
 328 config ARCH_SPARSEMEM_ENABLE
 329         def_bool y if SPARC64
 330         select SPARSEMEM_VMEMMAP_ENABLE
 331
 332 config ARCH_SPARSEMEM_DEFAULT
 333         def_bool y if SPARC64
 334
 335 source "mm/Kconfig"
 336
 337 config SCHED_SMT
 338         bool "SMT (Hyperthreading) scheduler support"
 339         depends on SPARC64 && SMP
 340         default y
 341         help
 342           SMT scheduler support improves the CPU scheduler's decision making
 343           when dealing with SPARC cpus at a cost of slightly increased overhead
 344           in some places. If unsure say N here.
 345
 346 config SCHED_MC
 347         bool "Multi-core scheduler support"
 348         depends on SPARC64 && SMP
 349         default y
 350         help
 351           Multi-core scheduler support improves the CPU scheduler's decision
 352           making when dealing with multi-core CPU chips at a cost of slightly
 353           increased overhead in some places. If unsure say N here.
 354
 355 source "kernel/Kconfig.preempt"
 356
 357 config CMDLINE_BOOL
 358         bool "Default bootloader kernel arguments"
 359         depends on SPARC64
 360
 361 config CMDLINE
 362         string "Initial kernel command string"
 363         depends on CMDLINE_BOOL
 364         default "console=ttyS0,9600 root=/dev/sda1"
 365         help
 366           Say Y here if you want to be able to pass default arguments to
 367           the kernel. This will be overridden by the bootloader, if you
 368           use one (such as SILO). This is most useful if you want to boot
 369           a kernel from TFTP, and want default options to be available
 370           with having them passed on the command line.
 371
 372           NOTE: This option WILL override the PROM bootargs setting!
 373
 374 config SUN_PM
 375         bool
 376         default y if SPARC32
 377         help
 378           Enable power management and CPU standby features on supported
 379           SPARC platforms.
 380
 381 config SPARC_LED
 382         tristate "Sun4m LED driver"
 383         depends on SPARC32
 384         help
 385           This driver toggles the front-panel LED on sun4m systems
 386           in a user-specifiable manner.  Its state can be probed
 387           by reading /proc/led and its blinking mode can be changed
 388           via writes to /proc/led
 389
 390 config SERIAL_CONSOLE
 391         bool
 392         depends on SPARC32
 393         default y
 394         ---help---
 395           If you say Y here, it will be possible to use a serial port as the
 396           system console (the system console is the device which receives all
 397           kernel messages and warnings and which allows logins in single user
 398           mode). This could be useful if some terminal or printer is connected
 399           to that serial port.
 400
 401           Even if you say Y here, the currently visible virtual console
 402           (/dev/tty0) will still be used as the system console by default, but
 403           you can alter that using a kernel command line option such as
 404           "console=ttyS1". (Try "man bootparam" or see the documentation of
 405           your boot loader (silo) about how to pass options to the kernel at
 406           boot time.)
 407
 408           If you don't have a graphics card installed and you say Y here, the
 409           kernel will automatically use the first serial line, /dev/ttyS0, as
 410           system console.
 411
 412           If unsure, say N.
 413
 414 config SPARC_LEON
 415         bool "Sparc Leon processor family"
 416         depends on SPARC32
 417         ---help---
 418           If you say Y here if you are running on a SPARC-LEON processor.
 419           The LEON processor is a synthesizable VHDL model of the
 420           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 421           IP cores that are distributed under GPL. GRLIB can be downloaded
 422           from www.gaisler.com. You can download a sparc-linux cross-compilation
 423           toolchain at www.gaisler.com.
 424
 425 if SPARC_LEON
 426 menu "U-Boot options"
 427
 428 config UBOOT_LOAD_ADDR
 429         hex "uImage Load Address"
 430         default 0x40004000
 431         ---help---
 432          U-Boot kernel load address, the address in physical address space
 433          where u-boot will place the Linux kernel before booting it.
 434          This address is normally the base address of main memory + 0x4000.
 435
 436 config UBOOT_FLASH_ADDR
 437         hex "uImage.o Load Address"
 438         default 0x00080000
 439         ---help---
 440          Optional setting only affecting the uImage.o ELF-image used to
 441          download the uImage file to the target using a ELF-loader other than
 442          U-Boot. It may for example be used to download an uImage to FLASH with
 443          the GRMON utility before even starting u-boot.
 444
 445 config UBOOT_ENTRY_ADDR
 446         hex "uImage Entry Address"
 447         default 0xf0004000
 448         ---help---
 449          Do not change this unless you know what you're doing. This is
 450          hardcoded by the SPARC32 and LEON port.
 451
 452          This is the virtual address u-boot jumps to when booting the Linux
 453          Kernel.
 454
 455 endmenu
 456 endif
 457
 458 endmenu
 459
 460 menu "Bus options (PCI etc.)"
 461 config SBUS
 462         bool
 463         default y
 464
 465 config SBUSCHAR
 466         bool
 467         default y
 468
 469 config SUN_LDOMS
 470         bool "Sun Logical Domains support"
 471         depends on SPARC64
 472         help
 473           Say Y here is you want to support virtual devices via
 474           Logical Domains.
 475
 476 config PCI
 477         bool "Support for PCI and PS/2 keyboard/mouse"
 478         help
 479           Find out whether your system includes a PCI bus. PCI is the name of
 480           a bus system, i.e. the way the CPU talks to the other stuff inside
 481           your box.  If you say Y here, the kernel will include drivers and
 482           infrastructure code to support PCI bus devices.
 483
 484           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 485           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 486           All of these platforms are extremely obscure, so say N if unsure.
 487
 488 config PCI_DOMAINS
 489         def_bool PCI if SPARC64
 490
 491 config PCI_SYSCALL
 492         def_bool PCI
 493
 494 config PCIC_PCI
 495         bool
 496         depends on PCI && SPARC32 && !SPARC_LEON
 497         default y
 498
 499 config LEON_PCI
 500         bool
 501         depends on PCI && SPARC_LEON
 502         default y
 503
 504 config GRPCI2
 505         bool "GRPCI2 Host Bridge Support"
 506         depends on LEON_PCI
 507         default y
 508         help
 509           Say Y here to include the GRPCI2 Host Bridge Driver.
 510
 511 source "drivers/pci/Kconfig"
 512
 513 source "drivers/pcmcia/Kconfig"
 514
 515 config SUN_OPENPROMFS
 516         tristate "Openprom tree appears in /proc/openprom"
 517         help
 518           If you say Y, the OpenPROM device tree will be available as a
 519           virtual file system, which you can mount to /proc/openprom by "mount
 520           -t openpromfs none /proc/openprom".
 521
 522           To compile the /proc/openprom support as a module, choose M here: the
 523           module will be called openpromfs.
 524
 525           Only choose N if you know in advance that you will not need to modify
 526           OpenPROM settings on the running system.
 527
 528 # Makefile helper
 529 config SPARC64_PCI
 530         bool
 531         default y
 532         depends on SPARC64 && PCI
 533
 534 endmenu
 535
 536 menu "Executable file formats"
 537
 538 source "fs/Kconfig.binfmt"
 539
 540 config COMPAT
 541         bool
 542         depends on SPARC64
 543         default y
 544         select COMPAT_BINFMT_ELF
 545         select HAVE_UID16
 546         select ARCH_WANT_OLD_COMPAT_IPC
 547
 548 config SYSVIPC_COMPAT
 549         bool
 550         depends on COMPAT && SYSVIPC
 551         default y
 552
 553 config KEYS_COMPAT
 554         def_bool y if COMPAT && KEYS
 555
 556 endmenu
 557
 558 source "net/Kconfig"
 559
 560 source "drivers/Kconfig"
 561
 562 source "drivers/sbus/char/Kconfig"
 563
 564 source "fs/Kconfig"
 565
 566 source "arch/sparc/Kconfig.debug"
 567
 568 source "security/Kconfig"
 569
 570 source "crypto/Kconfig"
 571
 572 source "lib/Kconfig"