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         select ODD_RT_SIGACTION
  45         select GENERIC_SIGALTSTACK
  46         select GENERIC_COMPAT_RT_SIGQUEUEINFO
  47         select GENERIC_COMPAT_RT_SIGPROCMASK
  48         select GENERIC_COMPAT_RT_SIGPENDING
  49         select GENERIC_COMPAT_RT_SIGACTION
  50
  51 config SPARC32
  52         def_bool !64BIT
  53         select GENERIC_ATOMIC64
  54         select CLZ_TAB
  55         select HAVE_UID16
  56         select OLD_SIGACTION
  57
  58 config SPARC64
  59         def_bool 64BIT
  60         select ARCH_SUPPORTS_MSI
  61         select HAVE_FUNCTION_TRACER
  62         select HAVE_FUNCTION_GRAPH_TRACER
  63         select HAVE_FUNCTION_GRAPH_FP_TEST
  64         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  65         select HAVE_KRETPROBES
  66         select HAVE_KPROBES
  67         select HAVE_RCU_TABLE_FREE if SMP
  68         select HAVE_MEMBLOCK
  69         select HAVE_MEMBLOCK_NODE_MAP
  70         select HAVE_SYSCALL_WRAPPERS
  71         select HAVE_DYNAMIC_FTRACE
  72         select HAVE_FTRACE_MCOUNT_RECORD
  73         select HAVE_SYSCALL_TRACEPOINTS
  74         select HAVE_DEBUG_KMEMLEAK
  75         select RTC_DRV_CMOS
  76         select RTC_DRV_BQ4802
  77         select RTC_DRV_SUN4V
  78         select RTC_DRV_STARFIRE
  79         select HAVE_PERF_EVENTS
  80         select PERF_USE_VMALLOC
  81         select IRQ_PREFLOW_FASTEOI
  82         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  83         select HAVE_C_RECORDMCOUNT
  84         select NO_BOOTMEM
  85
  86 config ARCH_DEFCONFIG
  87         string
  88         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  89         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  90
  91 # CONFIG_BITS can be used at source level to get 32/64 bits
  92 config BITS
  93         int
  94         default 32 if SPARC32
  95         default 64 if SPARC64
  96
  97 config IOMMU_HELPER
  98         bool
  99         default y if SPARC64
 100
 101 config STACKTRACE_SUPPORT
 102         bool
 103         default y if SPARC64
 104
 105 config LOCKDEP_SUPPORT
 106         bool
 107         default y if SPARC64
 108
 109 config HAVE_LATENCYTOP_SUPPORT
 110         bool
 111         default y if SPARC64
 112
 113 config AUDIT_ARCH
 114         bool
 115         default y
 116
 117 config HAVE_SETUP_PER_CPU_AREA
 118         def_bool y if SPARC64
 119
 120 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 121         def_bool y if SPARC64
 122
 123 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 124         def_bool y if SPARC64
 125
 126 config MMU
 127         bool
 128         default y
 129
 130 config HIGHMEM
 131         bool
 132         default y if SPARC32
 133
 134 config ZONE_DMA
 135         bool
 136         default y if SPARC32
 137
 138 config NEED_DMA_MAP_STATE
 139         def_bool y
 140
 141 config NEED_SG_DMA_LENGTH
 142         def_bool y
 143
 144 config GENERIC_ISA_DMA
 145         bool
 146         default y if SPARC32
 147
 148 config GENERIC_GPIO
 149         bool
 150         help
 151           Generic GPIO API support
 152
 153 config ARCH_NO_VIRT_TO_BUS
 154         def_bool y
 155
 156 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 157         def_bool y if SPARC64
 158
 159 source "init/Kconfig"
 160
 161 source "kernel/Kconfig.freezer"
 162
 163 menu "Processor type and features"
 164
 165 config SMP
 166         bool "Symmetric multi-processing support"
 167         ---help---
 168           This enables support for systems with more than one CPU. If you have
 169           a system with only one CPU, say N. If you have a system with more
 170           than one CPU, say Y.
 171
 172           If you say N here, the kernel will run on single and multiprocessor
 173           machines, but will use only one CPU of a multiprocessor machine. If
 174           you say Y here, the kernel will run on many, but not all,
 175           singleprocessor machines. On a singleprocessor machine, the kernel
 176           will run faster if you say N here.
 177
 178           People using multiprocessor machines who say Y here should also say
 179           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 180           Management" code will be disabled if you say Y here.
 181
 182           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 183           available at <http://www.tldp.org/docs.html#howto>.
 184
 185           If you don't know what to do here, say N.
 186
 187 config NR_CPUS
 188         int "Maximum number of CPUs"
 189         depends on SMP
 190         range 2 32 if SPARC32
 191         range 2 1024 if SPARC64
 192         default 32 if SPARC32
 193         default 64 if SPARC64
 194
 195 source kernel/Kconfig.hz
 196
 197 config RWSEM_GENERIC_SPINLOCK
 198         bool
 199         default y if SPARC32
 200
 201 config RWSEM_XCHGADD_ALGORITHM
 202         bool
 203         default y if SPARC64
 204
 205 config GENERIC_HWEIGHT
 206         bool
 207         default y if !ULTRA_HAS_POPULATION_COUNT
 208
 209 config GENERIC_CALIBRATE_DELAY
 210         bool
 211         default y
 212
 213 config ARCH_MAY_HAVE_PC_FDC
 214         bool
 215         default y
 216
 217 config EMULATED_CMPXCHG
 218         bool
 219         default y if SPARC32
 220         help
 221           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 222           is emulated, and therefore it is not completely atomic.
 223
 224 # Makefile helpers
 225 config SPARC32_SMP
 226         bool
 227         default y
 228         depends on SPARC32 && SMP
 229
 230 config SPARC64_SMP
 231         bool
 232         default y
 233         depends on SPARC64 && SMP
 234
 235 config EARLYFB
 236         bool "Support for early boot text console"
 237         default y
 238         depends on SPARC64
 239         help
 240           Say Y here to enable a faster early framebuffer boot console.
 241
 242 config SECCOMP
 243         bool "Enable seccomp to safely compute untrusted bytecode"
 244         depends on SPARC64 && PROC_FS
 245         default y
 246         help
 247           This kernel feature is useful for number crunching applications
 248           that may need to compute untrusted bytecode during their
 249           execution. By using pipes or other transports made available to
 250           the process as file descriptors supporting the read/write
 251           syscalls, it's possible to isolate those applications in
 252           their own address space using seccomp. Once seccomp is
 253           enabled via /proc/<pid>/seccomp, it cannot be disabled
 254           and the task is only allowed to execute a few safe syscalls
 255           defined by each seccomp mode.
 256
 257           If unsure, say Y. Only embedded should say N here.
 258
 259 config HOTPLUG_CPU
 260         bool "Support for hot-pluggable CPUs"
 261         depends on SPARC64 && SMP
 262         select HOTPLUG
 263         help
 264           Say Y here to experiment with turning CPUs off and on.  CPUs
 265           can be controlled through /sys/devices/system/cpu/cpu#.
 266           Say N if you want to disable CPU hotplug.
 267
 268 if SPARC64
 269 source "drivers/cpufreq/Kconfig"
 270
 271 config US3_FREQ
 272         tristate "UltraSPARC-III CPU Frequency driver"
 273         depends on CPU_FREQ
 274         select CPU_FREQ_TABLE
 275         help
 276           This adds the CPUFreq driver for UltraSPARC-III processors.
 277
 278           For details, take a look at <file:Documentation/cpu-freq>.
 279
 280           If in doubt, say N.
 281
 282 config US2E_FREQ
 283         tristate "UltraSPARC-IIe CPU Frequency driver"
 284         depends on CPU_FREQ
 285         select CPU_FREQ_TABLE
 286         help
 287           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 288
 289           For details, take a look at <file:Documentation/cpu-freq>.
 290
 291           If in doubt, say N.
 292
 293 endif
 294
 295 config US3_MC
 296         tristate "UltraSPARC-III Memory Controller driver"
 297         depends on SPARC64
 298         default y
 299         help
 300           This adds a driver for the UltraSPARC-III memory controller.
 301           Loading this driver allows exact mnemonic strings to be
 302           printed in the event of a memory error, so that the faulty DIMM
 303           on the motherboard can be matched to the error.
 304
 305           If in doubt, say Y, as this information can be very useful.
 306
 307 # Global things across all Sun machines.
 308 config GENERIC_LOCKBREAK
 309         bool
 310         default y
 311         depends on SPARC64 && SMP && PREEMPT
 312
 313 config NUMA
 314         bool "NUMA support"
 315         depends on SPARC64 && SMP
 316
 317 config NODES_SHIFT
 318         int
 319         default "4"
 320         depends on NEED_MULTIPLE_NODES
 321
 322 # Some NUMA nodes have memory ranges that span
 323 # other nodes.  Even though a pfn is valid and
 324 # between a node's start and end pfns, it may not
 325 # reside on that node.  See memmap_init_zone()
 326 # for details.
 327 config NODES_SPAN_OTHER_NODES
 328         def_bool y
 329         depends on NEED_MULTIPLE_NODES
 330
 331 config ARCH_SELECT_MEMORY_MODEL
 332         def_bool y if SPARC64
 333
 334 config ARCH_SPARSEMEM_ENABLE
 335         def_bool y if SPARC64
 336         select SPARSEMEM_VMEMMAP_ENABLE
 337
 338 config ARCH_SPARSEMEM_DEFAULT
 339         def_bool y if SPARC64
 340
 341 source "mm/Kconfig"
 342
 343 config SCHED_SMT
 344         bool "SMT (Hyperthreading) scheduler support"
 345         depends on SPARC64 && SMP
 346         default y
 347         help
 348           SMT scheduler support improves the CPU scheduler's decision making
 349           when dealing with SPARC cpus at a cost of slightly increased overhead
 350           in some places. If unsure say N here.
 351
 352 config SCHED_MC
 353         bool "Multi-core scheduler support"
 354         depends on SPARC64 && SMP
 355         default y
 356         help
 357           Multi-core scheduler support improves the CPU scheduler's decision
 358           making when dealing with multi-core CPU chips at a cost of slightly
 359           increased overhead in some places. If unsure say N here.
 360
 361 source "kernel/Kconfig.preempt"
 362
 363 config CMDLINE_BOOL
 364         bool "Default bootloader kernel arguments"
 365         depends on SPARC64
 366
 367 config CMDLINE
 368         string "Initial kernel command string"
 369         depends on CMDLINE_BOOL
 370         default "console=ttyS0,9600 root=/dev/sda1"
 371         help
 372           Say Y here if you want to be able to pass default arguments to
 373           the kernel. This will be overridden by the bootloader, if you
 374           use one (such as SILO). This is most useful if you want to boot
 375           a kernel from TFTP, and want default options to be available
 376           with having them passed on the command line.
 377
 378           NOTE: This option WILL override the PROM bootargs setting!
 379
 380 config SUN_PM
 381         bool
 382         default y if SPARC32
 383         help
 384           Enable power management and CPU standby features on supported
 385           SPARC platforms.
 386
 387 config SPARC_LED
 388         tristate "Sun4m LED driver"
 389         depends on SPARC32
 390         help
 391           This driver toggles the front-panel LED on sun4m systems
 392           in a user-specifiable manner.  Its state can be probed
 393           by reading /proc/led and its blinking mode can be changed
 394           via writes to /proc/led
 395
 396 config SERIAL_CONSOLE
 397         bool
 398         depends on SPARC32
 399         default y
 400         ---help---
 401           If you say Y here, it will be possible to use a serial port as the
 402           system console (the system console is the device which receives all
 403           kernel messages and warnings and which allows logins in single user
 404           mode). This could be useful if some terminal or printer is connected
 405           to that serial port.
 406
 407           Even if you say Y here, the currently visible virtual console
 408           (/dev/tty0) will still be used as the system console by default, but
 409           you can alter that using a kernel command line option such as
 410           "console=ttyS1". (Try "man bootparam" or see the documentation of
 411           your boot loader (silo) about how to pass options to the kernel at
 412           boot time.)
 413
 414           If you don't have a graphics card installed and you say Y here, the
 415           kernel will automatically use the first serial line, /dev/ttyS0, as
 416           system console.
 417
 418           If unsure, say N.
 419
 420 config SPARC_LEON
 421         bool "Sparc Leon processor family"
 422         depends on SPARC32
 423         ---help---
 424           If you say Y here if you are running on a SPARC-LEON processor.
 425           The LEON processor is a synthesizable VHDL model of the
 426           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 427           IP cores that are distributed under GPL. GRLIB can be downloaded
 428           from www.gaisler.com. You can download a sparc-linux cross-compilation
 429           toolchain at www.gaisler.com.
 430
 431 if SPARC_LEON
 432 menu "U-Boot options"
 433
 434 config UBOOT_LOAD_ADDR
 435         hex "uImage Load Address"
 436         default 0x40004000
 437         ---help---
 438          U-Boot kernel load address, the address in physical address space
 439          where u-boot will place the Linux kernel before booting it.
 440          This address is normally the base address of main memory + 0x4000.
 441
 442 config UBOOT_FLASH_ADDR
 443         hex "uImage.o Load Address"
 444         default 0x00080000
 445         ---help---
 446          Optional setting only affecting the uImage.o ELF-image used to
 447          download the uImage file to the target using a ELF-loader other than
 448          U-Boot. It may for example be used to download an uImage to FLASH with
 449          the GRMON utility before even starting u-boot.
 450
 451 config UBOOT_ENTRY_ADDR
 452         hex "uImage Entry Address"
 453         default 0xf0004000
 454         ---help---
 455          Do not change this unless you know what you're doing. This is
 456          hardcoded by the SPARC32 and LEON port.
 457
 458          This is the virtual address u-boot jumps to when booting the Linux
 459          Kernel.
 460
 461 endmenu
 462 endif
 463
 464 endmenu
 465
 466 menu "Bus options (PCI etc.)"
 467 config SBUS
 468         bool
 469         default y
 470
 471 config SBUSCHAR
 472         bool
 473         default y
 474
 475 config SUN_LDOMS
 476         bool "Sun Logical Domains support"
 477         depends on SPARC64
 478         help
 479           Say Y here is you want to support virtual devices via
 480           Logical Domains.
 481
 482 config PCI
 483         bool "Support for PCI and PS/2 keyboard/mouse"
 484         help
 485           Find out whether your system includes a PCI bus. PCI is the name of
 486           a bus system, i.e. the way the CPU talks to the other stuff inside
 487           your box.  If you say Y here, the kernel will include drivers and
 488           infrastructure code to support PCI bus devices.
 489
 490           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 491           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 492           All of these platforms are extremely obscure, so say N if unsure.
 493
 494 config PCI_DOMAINS
 495         def_bool PCI if SPARC64
 496
 497 config PCI_SYSCALL
 498         def_bool PCI
 499
 500 config PCIC_PCI
 501         bool
 502         depends on PCI && SPARC32 && !SPARC_LEON
 503         default y
 504
 505 config LEON_PCI
 506         bool
 507         depends on PCI && SPARC_LEON
 508         default y
 509
 510 config GRPCI2
 511         bool "GRPCI2 Host Bridge Support"
 512         depends on LEON_PCI
 513         default y
 514         help
 515           Say Y here to include the GRPCI2 Host Bridge Driver.
 516
 517 source "drivers/pci/Kconfig"
 518
 519 source "drivers/pcmcia/Kconfig"
 520
 521 config SUN_OPENPROMFS
 522         tristate "Openprom tree appears in /proc/openprom"
 523         help
 524           If you say Y, the OpenPROM device tree will be available as a
 525           virtual file system, which you can mount to /proc/openprom by "mount
 526           -t openpromfs none /proc/openprom".
 527
 528           To compile the /proc/openprom support as a module, choose M here: the
 529           module will be called openpromfs.
 530
 531           Only choose N if you know in advance that you will not need to modify
 532           OpenPROM settings on the running system.
 533
 534 # Makefile helper
 535 config SPARC64_PCI
 536         bool
 537         default y
 538         depends on SPARC64 && PCI
 539
 540 endmenu
 541
 542 menu "Executable file formats"
 543
 544 source "fs/Kconfig.binfmt"
 545
 546 config COMPAT
 547         bool
 548         depends on SPARC64
 549         default y
 550         select COMPAT_BINFMT_ELF
 551         select HAVE_UID16
 552         select ARCH_WANT_OLD_COMPAT_IPC
 553         select COMPAT_OLD_SIGACTION
 554
 555 config SYSVIPC_COMPAT
 556         bool
 557         depends on COMPAT && SYSVIPC
 558         default y
 559
 560 config KEYS_COMPAT
 561         def_bool y if COMPAT && KEYS
 562
 563 endmenu
 564
 565 source "net/Kconfig"
 566
 567 source "drivers/Kconfig"
 568
 569 source "drivers/sbus/char/Kconfig"
 570
 571 source "fs/Kconfig"
 572
 573 source "arch/sparc/Kconfig.debug"
 574
 575 source "security/Kconfig"
 576
 577 source "crypto/Kconfig"
 578
 579 source "lib/Kconfig"