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 RTC_CLASS
  24         select RTC_DRV_M48T59
  25         select HAVE_IRQ_WORK
  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
  44 config SPARC32
  45         def_bool !64BIT
  46         select GENERIC_ATOMIC64
  47         select CLZ_TAB
  48         select HAVE_UID16
  49
  50 config SPARC64
  51         def_bool 64BIT
  52         select ARCH_SUPPORTS_MSI
  53         select HAVE_FUNCTION_TRACER
  54         select HAVE_FUNCTION_GRAPH_TRACER
  55         select HAVE_FUNCTION_GRAPH_FP_TEST
  56         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  57         select HAVE_KRETPROBES
  58         select HAVE_KPROBES
  59         select HAVE_RCU_TABLE_FREE if SMP
  60         select HAVE_MEMBLOCK
  61         select HAVE_MEMBLOCK_NODE_MAP
  62         select HAVE_SYSCALL_WRAPPERS
  63         select HAVE_DYNAMIC_FTRACE
  64         select HAVE_FTRACE_MCOUNT_RECORD
  65         select HAVE_SYSCALL_TRACEPOINTS
  66         select HAVE_DEBUG_KMEMLEAK
  67         select RTC_DRV_CMOS
  68         select RTC_DRV_BQ4802
  69         select RTC_DRV_SUN4V
  70         select RTC_DRV_STARFIRE
  71         select HAVE_PERF_EVENTS
  72         select PERF_USE_VMALLOC
  73         select IRQ_PREFLOW_FASTEOI
  74         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  75         select HAVE_C_RECORDMCOUNT
  76         select NO_BOOTMEM
  77
  78 config ARCH_DEFCONFIG
  79         string
  80         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  81         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  82
  83 # CONFIG_BITS can be used at source level to get 32/64 bits
  84 config BITS
  85         int
  86         default 32 if SPARC32
  87         default 64 if SPARC64
  88
  89 config IOMMU_HELPER
  90         bool
  91         default y if SPARC64
  92
  93 config STACKTRACE_SUPPORT
  94         bool
  95         default y if SPARC64
  96
  97 config LOCKDEP_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config HAVE_LATENCYTOP_SUPPORT
 102         bool
 103         default y if SPARC64
 104
 105 config AUDIT_ARCH
 106         bool
 107         default y
 108
 109 config HAVE_SETUP_PER_CPU_AREA
 110         def_bool y if SPARC64
 111
 112 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config MMU
 119         bool
 120         default y
 121
 122 config HIGHMEM
 123         bool
 124         default y if SPARC32
 125
 126 config ZONE_DMA
 127         bool
 128         default y if SPARC32
 129
 130 config NEED_DMA_MAP_STATE
 131         def_bool y
 132
 133 config NEED_SG_DMA_LENGTH
 134         def_bool y
 135
 136 config GENERIC_ISA_DMA
 137         bool
 138         default y if SPARC32
 139
 140 config GENERIC_GPIO
 141         bool
 142         help
 143           Generic GPIO API support
 144
 145 config ARCH_NO_VIRT_TO_BUS
 146         def_bool y
 147
 148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 149         def_bool y if SPARC64
 150
 151 source "init/Kconfig"
 152
 153 source "kernel/Kconfig.freezer"
 154
 155 menu "Processor type and features"
 156
 157 config SMP
 158         bool "Symmetric multi-processing support"
 159         ---help---
 160           This enables support for systems with more than one CPU. If you have
 161           a system with only one CPU, say N. If you have a system with more
 162           than one CPU, say Y.
 163
 164           If you say N here, the kernel will run on single and multiprocessor
 165           machines, but will use only one CPU of a multiprocessor machine. If
 166           you say Y here, the kernel will run on many, but not all,
 167           singleprocessor machines. On a singleprocessor machine, the kernel
 168           will run faster if you say N here.
 169
 170           People using multiprocessor machines who say Y here should also say
 171           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 172           Management" code will be disabled if you say Y here.
 173
 174           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 175           available at <http://www.tldp.org/docs.html#howto>.
 176
 177           If you don't know what to do here, say N.
 178
 179 config NR_CPUS
 180         int "Maximum number of CPUs"
 181         depends on SMP
 182         range 2 32 if SPARC32
 183         range 2 1024 if SPARC64
 184         default 32 if SPARC32
 185         default 64 if SPARC64
 186
 187 source kernel/Kconfig.hz
 188
 189 config RWSEM_GENERIC_SPINLOCK
 190         bool
 191         default y if SPARC32
 192
 193 config RWSEM_XCHGADD_ALGORITHM
 194         bool
 195         default y if SPARC64
 196
 197 config GENERIC_HWEIGHT
 198         bool
 199         default y if !ULTRA_HAS_POPULATION_COUNT
 200
 201 config GENERIC_CALIBRATE_DELAY
 202         bool
 203         default y
 204
 205 config ARCH_MAY_HAVE_PC_FDC
 206         bool
 207         default y
 208
 209 config EMULATED_CMPXCHG
 210         bool
 211         default y if SPARC32
 212         help
 213           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 214           is emulated, and therefore it is not completely atomic.
 215
 216 # Makefile helpers
 217 config SPARC32_SMP
 218         bool
 219         default y
 220         depends on SPARC32 && SMP
 221
 222 config SPARC64_SMP
 223         bool
 224         default y
 225         depends on SPARC64 && SMP
 226
 227 config EARLYFB
 228         bool "Support for early boot text console"
 229         default y
 230         depends on SPARC64
 231         help
 232           Say Y here to enable a faster early framebuffer boot console.
 233
 234 config SECCOMP
 235         bool "Enable seccomp to safely compute untrusted bytecode"
 236         depends on SPARC64 && PROC_FS
 237         default y
 238         help
 239           This kernel feature is useful for number crunching applications
 240           that may need to compute untrusted bytecode during their
 241           execution. By using pipes or other transports made available to
 242           the process as file descriptors supporting the read/write
 243           syscalls, it's possible to isolate those applications in
 244           their own address space using seccomp. Once seccomp is
 245           enabled via /proc/<pid>/seccomp, it cannot be disabled
 246           and the task is only allowed to execute a few safe syscalls
 247           defined by each seccomp mode.
 248
 249           If unsure, say Y. Only embedded should say N here.
 250
 251 config HOTPLUG_CPU
 252         bool "Support for hot-pluggable CPUs"
 253         depends on SPARC64 && SMP
 254         select HOTPLUG
 255         help
 256           Say Y here to experiment with turning CPUs off and on.  CPUs
 257           can be controlled through /sys/devices/system/cpu/cpu#.
 258           Say N if you want to disable CPU hotplug.
 259
 260 if SPARC64
 261 source "drivers/cpufreq/Kconfig"
 262
 263 config US3_FREQ
 264         tristate "UltraSPARC-III CPU Frequency driver"
 265         depends on CPU_FREQ
 266         select CPU_FREQ_TABLE
 267         help
 268           This adds the CPUFreq driver for UltraSPARC-III processors.
 269
 270           For details, take a look at <file:Documentation/cpu-freq>.
 271
 272           If in doubt, say N.
 273
 274 config US2E_FREQ
 275         tristate "UltraSPARC-IIe CPU Frequency driver"
 276         depends on CPU_FREQ
 277         select CPU_FREQ_TABLE
 278         help
 279           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 280
 281           For details, take a look at <file:Documentation/cpu-freq>.
 282
 283           If in doubt, say N.
 284
 285 endif
 286
 287 config US3_MC
 288         tristate "UltraSPARC-III Memory Controller driver"
 289         depends on SPARC64
 290         default y
 291         help
 292           This adds a driver for the UltraSPARC-III memory controller.
 293           Loading this driver allows exact mnemonic strings to be
 294           printed in the event of a memory error, so that the faulty DIMM
 295           on the motherboard can be matched to the error.
 296
 297           If in doubt, say Y, as this information can be very useful.
 298
 299 # Global things across all Sun machines.
 300 config GENERIC_LOCKBREAK
 301         bool
 302         default y
 303         depends on SPARC64 && SMP && PREEMPT
 304
 305 config NUMA
 306         bool "NUMA support"
 307         depends on SPARC64 && SMP
 308
 309 config NODES_SHIFT
 310         int
 311         default "4"
 312         depends on NEED_MULTIPLE_NODES
 313
 314 # Some NUMA nodes have memory ranges that span
 315 # other nodes.  Even though a pfn is valid and
 316 # between a node's start and end pfns, it may not
 317 # reside on that node.  See memmap_init_zone()
 318 # for details.
 319 config NODES_SPAN_OTHER_NODES
 320         def_bool y
 321         depends on NEED_MULTIPLE_NODES
 322
 323 config ARCH_SELECT_MEMORY_MODEL
 324         def_bool y if SPARC64
 325
 326 config ARCH_SPARSEMEM_ENABLE
 327         def_bool y if SPARC64
 328         select SPARSEMEM_VMEMMAP_ENABLE
 329
 330 config ARCH_SPARSEMEM_DEFAULT
 331         def_bool y if SPARC64
 332
 333 source "mm/Kconfig"
 334
 335 config SCHED_SMT
 336         bool "SMT (Hyperthreading) scheduler support"
 337         depends on SPARC64 && SMP
 338         default y
 339         help
 340           SMT scheduler support improves the CPU scheduler's decision making
 341           when dealing with SPARC cpus at a cost of slightly increased overhead
 342           in some places. If unsure say N here.
 343
 344 config SCHED_MC
 345         bool "Multi-core scheduler support"
 346         depends on SPARC64 && SMP
 347         default y
 348         help
 349           Multi-core scheduler support improves the CPU scheduler's decision
 350           making when dealing with multi-core CPU chips at a cost of slightly
 351           increased overhead in some places. If unsure say N here.
 352
 353 source "kernel/Kconfig.preempt"
 354
 355 config CMDLINE_BOOL
 356         bool "Default bootloader kernel arguments"
 357         depends on SPARC64
 358
 359 config CMDLINE
 360         string "Initial kernel command string"
 361         depends on CMDLINE_BOOL
 362         default "console=ttyS0,9600 root=/dev/sda1"
 363         help
 364           Say Y here if you want to be able to pass default arguments to
 365           the kernel. This will be overridden by the bootloader, if you
 366           use one (such as SILO). This is most useful if you want to boot
 367           a kernel from TFTP, and want default options to be available
 368           with having them passed on the command line.
 369
 370           NOTE: This option WILL override the PROM bootargs setting!
 371
 372 config SUN_PM
 373         bool
 374         default y if SPARC32
 375         help
 376           Enable power management and CPU standby features on supported
 377           SPARC platforms.
 378
 379 config SPARC_LED
 380         tristate "Sun4m LED driver"
 381         depends on SPARC32
 382         help
 383           This driver toggles the front-panel LED on sun4m systems
 384           in a user-specifiable manner.  Its state can be probed
 385           by reading /proc/led and its blinking mode can be changed
 386           via writes to /proc/led
 387
 388 config SERIAL_CONSOLE
 389         bool
 390         depends on SPARC32
 391         default y
 392         ---help---
 393           If you say Y here, it will be possible to use a serial port as the
 394           system console (the system console is the device which receives all
 395           kernel messages and warnings and which allows logins in single user
 396           mode). This could be useful if some terminal or printer is connected
 397           to that serial port.
 398
 399           Even if you say Y here, the currently visible virtual console
 400           (/dev/tty0) will still be used as the system console by default, but
 401           you can alter that using a kernel command line option such as
 402           "console=ttyS1". (Try "man bootparam" or see the documentation of
 403           your boot loader (silo) about how to pass options to the kernel at
 404           boot time.)
 405
 406           If you don't have a graphics card installed and you say Y here, the
 407           kernel will automatically use the first serial line, /dev/ttyS0, as
 408           system console.
 409
 410           If unsure, say N.
 411
 412 config SPARC_LEON
 413         bool "Sparc Leon processor family"
 414         depends on SPARC32
 415         ---help---
 416           If you say Y here if you are running on a SPARC-LEON processor.
 417           The LEON processor is a synthesizable VHDL model of the
 418           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 419           IP cores that are distributed under GPL. GRLIB can be downloaded
 420           from www.gaisler.com. You can download a sparc-linux cross-compilation
 421           toolchain at www.gaisler.com.
 422
 423 if SPARC_LEON
 424 menu "U-Boot options"
 425
 426 config UBOOT_LOAD_ADDR
 427         hex "uImage Load Address"
 428         default 0x40004000
 429         ---help---
 430          U-Boot kernel load address, the address in physical address space
 431          where u-boot will place the Linux kernel before booting it.
 432          This address is normally the base address of main memory + 0x4000.
 433
 434 config UBOOT_FLASH_ADDR
 435         hex "uImage.o Load Address"
 436         default 0x00080000
 437         ---help---
 438          Optional setting only affecting the uImage.o ELF-image used to
 439          download the uImage file to the target using a ELF-loader other than
 440          U-Boot. It may for example be used to download an uImage to FLASH with
 441          the GRMON utility before even starting u-boot.
 442
 443 config UBOOT_ENTRY_ADDR
 444         hex "uImage Entry Address"
 445         default 0xf0004000
 446         ---help---
 447          Do not change this unless you know what you're doing. This is
 448          hardcoded by the SPARC32 and LEON port.
 449
 450          This is the virtual address u-boot jumps to when booting the Linux
 451          Kernel.
 452
 453 endmenu
 454 endif
 455
 456 endmenu
 457
 458 menu "Bus options (PCI etc.)"
 459 config SBUS
 460         bool
 461         default y
 462
 463 config SBUSCHAR
 464         bool
 465         default y
 466
 467 config SUN_LDOMS
 468         bool "Sun Logical Domains support"
 469         depends on SPARC64
 470         help
 471           Say Y here is you want to support virtual devices via
 472           Logical Domains.
 473
 474 config PCI
 475         bool "Support for PCI and PS/2 keyboard/mouse"
 476         help
 477           Find out whether your system includes a PCI bus. PCI is the name of
 478           a bus system, i.e. the way the CPU talks to the other stuff inside
 479           your box.  If you say Y here, the kernel will include drivers and
 480           infrastructure code to support PCI bus devices.
 481
 482           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 483           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 484           All of these platforms are extremely obscure, so say N if unsure.
 485
 486 config PCI_DOMAINS
 487         def_bool PCI if SPARC64
 488
 489 config PCI_SYSCALL
 490         def_bool PCI
 491
 492 config PCIC_PCI
 493         bool
 494         depends on PCI && SPARC32 && !SPARC_LEON
 495         default y
 496
 497 config LEON_PCI
 498         bool
 499         depends on PCI && SPARC_LEON
 500         default y
 501
 502 config GRPCI2
 503         bool "GRPCI2 Host Bridge Support"
 504         depends on LEON_PCI
 505         default y
 506         help
 507           Say Y here to include the GRPCI2 Host Bridge Driver.
 508
 509 source "drivers/pci/Kconfig"
 510
 511 source "drivers/pcmcia/Kconfig"
 512
 513 config SUN_OPENPROMFS
 514         tristate "Openprom tree appears in /proc/openprom"
 515         help
 516           If you say Y, the OpenPROM device tree will be available as a
 517           virtual file system, which you can mount to /proc/openprom by "mount
 518           -t openpromfs none /proc/openprom".
 519
 520           To compile the /proc/openprom support as a module, choose M here: the
 521           module will be called openpromfs.
 522
 523           Only choose N if you know in advance that you will not need to modify
 524           OpenPROM settings on the running system.
 525
 526 # Makefile helper
 527 config SPARC64_PCI
 528         bool
 529         default y
 530         depends on SPARC64 && PCI
 531
 532 endmenu
 533
 534 menu "Executable file formats"
 535
 536 source "fs/Kconfig.binfmt"
 537
 538 config COMPAT
 539         bool
 540         depends on SPARC64
 541         default y
 542         select COMPAT_BINFMT_ELF
 543         select HAVE_UID16
 544         select ARCH_WANT_OLD_COMPAT_IPC
 545
 546 config SYSVIPC_COMPAT
 547         bool
 548         depends on COMPAT && SYSVIPC
 549         default y
 550
 551 config KEYS_COMPAT
 552         def_bool y if COMPAT && KEYS
 553
 554 endmenu
 555
 556 source "net/Kconfig"
 557
 558 source "drivers/Kconfig"
 559
 560 source "drivers/sbus/char/Kconfig"
 561
 562 source "fs/Kconfig"
 563
 564 source "arch/sparc/Kconfig.debug"
 565
 566 source "security/Kconfig"
 567
 568 source "crypto/Kconfig"
 569
 570 source "lib/Kconfig"