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