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