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 ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
  16         select ARCH_MIGHT_HAVE_PC_SERIO
  17         select OF
  18         select OF_PROMTREE
  19         select HAVE_IDE
  20         select HAVE_OPROFILE
  21         select HAVE_ARCH_KGDB if !SMP || SPARC64
  22         select HAVE_ARCH_TRACEHOOK
  23         select SYSCTL_EXCEPTION_TRACE
  24         select ARCH_WANT_OPTIONAL_GPIOLIB
  25         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  26         select RTC_CLASS
  27         select RTC_DRV_M48T59
  28         select RTC_SYSTOHC
  29         select HAVE_DMA_ATTRS
  30         select HAVE_DMA_API_DEBUG
  31         select HAVE_ARCH_JUMP_LABEL if SPARC64
  32         select GENERIC_IRQ_SHOW
  33         select ARCH_WANT_IPC_PARSE_VERSION
  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_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         select ARCH_HAS_SG_CHAIN
  46
  47 config SPARC32
  48         def_bool !64BIT
  49         select GENERIC_ATOMIC64
  50         select CLZ_TAB
  51         select HAVE_UID16
  52         select OLD_SIGACTION
  53
  54 config SPARC64
  55         def_bool 64BIT
  56         select HAVE_FUNCTION_TRACER
  57         select HAVE_FUNCTION_GRAPH_TRACER
  58         select HAVE_FUNCTION_GRAPH_FP_TEST
  59         select HAVE_KRETPROBES
  60         select HAVE_KPROBES
  61         select HAVE_RCU_TABLE_FREE if SMP
  62         select HAVE_MEMBLOCK
  63         select HAVE_MEMBLOCK_NODE_MAP
  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_CONTEXT_TRACKING
  69         select HAVE_DEBUG_KMEMLEAK
  70         select SPARSE_IRQ
  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         select HAVE_ARCH_AUDITSYSCALL
  82         select ARCH_SUPPORTS_ATOMIC_RMW
  83
  84 config ARCH_DEFCONFIG
  85         string
  86         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  87         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  88
  89 config ARCH_PROC_KCORE_TEXT
  90         def_bool y
  91
  92 config IOMMU_HELPER
  93         bool
  94         default y if SPARC64
  95
  96 config STACKTRACE_SUPPORT
  97         bool
  98         default y if SPARC64
  99
 100 config LOCKDEP_SUPPORT
 101         bool
 102         default y if SPARC64
 103
 104 config HAVE_LATENCYTOP_SUPPORT
 105         bool
 106         default y if SPARC64
 107
 108 config ARCH_HIBERNATION_POSSIBLE
 109         def_bool y if SPARC64
 110
 111 config AUDIT_ARCH
 112         bool
 113         default y
 114
 115 config HAVE_SETUP_PER_CPU_AREA
 116         def_bool y if SPARC64
 117
 118 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 119         def_bool y if SPARC64
 120
 121 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 122         def_bool y if SPARC64
 123
 124 config MMU
 125         bool
 126         default y
 127
 128 config HIGHMEM
 129         bool
 130         default y if SPARC32
 131
 132 config ZONE_DMA
 133         bool
 134         default y if SPARC32
 135
 136 config NEED_DMA_MAP_STATE
 137         def_bool y
 138
 139 config NEED_SG_DMA_LENGTH
 140         def_bool y
 141
 142 config GENERIC_ISA_DMA
 143         bool
 144         default y if SPARC32
 145
 146 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 147         def_bool y if SPARC64
 148
 149 config PGTABLE_LEVELS
 150         default 4 if 64BIT
 151         default 3
 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 uni- 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           uniprocessor machines. On a uniprocessor 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
 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         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 endif
 264
 265 config US3_MC
 266         tristate "UltraSPARC-III Memory Controller driver"
 267         depends on SPARC64
 268         default y
 269         help
 270           This adds a driver for the UltraSPARC-III memory controller.
 271           Loading this driver allows exact mnemonic strings to be
 272           printed in the event of a memory error, so that the faulty DIMM
 273           on the motherboard can be matched to the error.
 274
 275           If in doubt, say Y, as this information can be very useful.
 276
 277 # Global things across all Sun machines.
 278 config GENERIC_LOCKBREAK
 279         bool
 280         default y
 281         depends on SPARC64 && SMP && PREEMPT
 282
 283 config NUMA
 284         bool "NUMA support"
 285         depends on SPARC64 && SMP
 286
 287 config NODES_SHIFT
 288         int
 289         default "4"
 290         depends on NEED_MULTIPLE_NODES
 291
 292 # Some NUMA nodes have memory ranges that span
 293 # other nodes.  Even though a pfn is valid and
 294 # between a node's start and end pfns, it may not
 295 # reside on that node.  See memmap_init_zone()
 296 # for details.
 297 config NODES_SPAN_OTHER_NODES
 298         def_bool y
 299         depends on NEED_MULTIPLE_NODES
 300
 301 config ARCH_SELECT_MEMORY_MODEL
 302         def_bool y if SPARC64
 303
 304 config ARCH_SPARSEMEM_ENABLE
 305         def_bool y if SPARC64
 306         select SPARSEMEM_VMEMMAP_ENABLE
 307
 308 config ARCH_SPARSEMEM_DEFAULT
 309         def_bool y if SPARC64
 310
 311 source "mm/Kconfig"
 312
 313 if SPARC64
 314 source "kernel/power/Kconfig"
 315 endif
 316
 317 config SCHED_SMT
 318         bool "SMT (Hyperthreading) scheduler support"
 319         depends on SPARC64 && SMP
 320         default y
 321         help
 322           SMT scheduler support improves the CPU scheduler's decision making
 323           when dealing with SPARC cpus at a cost of slightly increased overhead
 324           in some places. If unsure say N here.
 325
 326 config SCHED_MC
 327         bool "Multi-core scheduler support"
 328         depends on SPARC64 && SMP
 329         default y
 330         help
 331           Multi-core scheduler support improves the CPU scheduler's decision
 332           making when dealing with multi-core CPU chips at a cost of slightly
 333           increased overhead in some places. If unsure say N here.
 334
 335 source "kernel/Kconfig.preempt"
 336
 337 config CMDLINE_BOOL
 338         bool "Default bootloader kernel arguments"
 339         depends on SPARC64
 340
 341 config CMDLINE
 342         string "Initial kernel command string"
 343         depends on CMDLINE_BOOL
 344         default "console=ttyS0,9600 root=/dev/sda1"
 345         help
 346           Say Y here if you want to be able to pass default arguments to
 347           the kernel. This will be overridden by the bootloader, if you
 348           use one (such as SILO). This is most useful if you want to boot
 349           a kernel from TFTP, and want default options to be available
 350           with having them passed on the command line.
 351
 352           NOTE: This option WILL override the PROM bootargs setting!
 353
 354 config SUN_PM
 355         bool
 356         default y if SPARC32
 357         help
 358           Enable power management and CPU standby features on supported
 359           SPARC platforms.
 360
 361 config SPARC_LED
 362         tristate "Sun4m LED driver"
 363         depends on SPARC32
 364         help
 365           This driver toggles the front-panel LED on sun4m systems
 366           in a user-specifiable manner.  Its state can be probed
 367           by reading /proc/led and its blinking mode can be changed
 368           via writes to /proc/led
 369
 370 config SERIAL_CONSOLE
 371         bool
 372         depends on SPARC32
 373         default y
 374         ---help---
 375           If you say Y here, it will be possible to use a serial port as the
 376           system console (the system console is the device which receives all
 377           kernel messages and warnings and which allows logins in single user
 378           mode). This could be useful if some terminal or printer is connected
 379           to that serial port.
 380
 381           Even if you say Y here, the currently visible virtual console
 382           (/dev/tty0) will still be used as the system console by default, but
 383           you can alter that using a kernel command line option such as
 384           "console=ttyS1". (Try "man bootparam" or see the documentation of
 385           your boot loader (silo) about how to pass options to the kernel at
 386           boot time.)
 387
 388           If you don't have a graphics card installed and you say Y here, the
 389           kernel will automatically use the first serial line, /dev/ttyS0, as
 390           system console.
 391
 392           If unsure, say N.
 393
 394 config SPARC_LEON
 395         bool "Sparc Leon processor family"
 396         depends on SPARC32
 397         select USB_EHCI_BIG_ENDIAN_MMIO
 398         select USB_EHCI_BIG_ENDIAN_DESC
 399         ---help---
 400           If you say Y here if you are running on a SPARC-LEON processor.
 401           The LEON processor is a synthesizable VHDL model of the
 402           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 403           IP cores that are distributed under GPL. GRLIB can be downloaded
 404           from www.gaisler.com. You can download a sparc-linux cross-compilation
 405           toolchain at www.gaisler.com.
 406
 407 if SPARC_LEON
 408 menu "U-Boot options"
 409
 410 config UBOOT_LOAD_ADDR
 411         hex "uImage Load Address"
 412         default 0x40004000
 413         ---help---
 414          U-Boot kernel load address, the address in physical address space
 415          where u-boot will place the Linux kernel before booting it.
 416          This address is normally the base address of main memory + 0x4000.
 417
 418 config UBOOT_FLASH_ADDR
 419         hex "uImage.o Load Address"
 420         default 0x00080000
 421         ---help---
 422          Optional setting only affecting the uImage.o ELF-image used to
 423          download the uImage file to the target using a ELF-loader other than
 424          U-Boot. It may for example be used to download an uImage to FLASH with
 425          the GRMON utility before even starting u-boot.
 426
 427 config UBOOT_ENTRY_ADDR
 428         hex "uImage Entry Address"
 429         default 0xf0004000
 430         ---help---
 431          Do not change this unless you know what you're doing. This is
 432          hardcoded by the SPARC32 and LEON port.
 433
 434          This is the virtual address u-boot jumps to when booting the Linux
 435          Kernel.
 436
 437 endmenu
 438 endif
 439
 440 endmenu
 441
 442 menu "Bus options (PCI etc.)"
 443 config SBUS
 444         bool
 445         default y
 446
 447 config SBUSCHAR
 448         bool
 449         default y
 450
 451 config SUN_LDOMS
 452         bool "Sun Logical Domains support"
 453         depends on SPARC64
 454         help
 455           Say Y here is you want to support virtual devices via
 456           Logical Domains.
 457
 458 config PCI
 459         bool "Support for PCI and PS/2 keyboard/mouse"
 460         help
 461           Find out whether your system includes a PCI bus. PCI is the name of
 462           a bus system, i.e. the way the CPU talks to the other stuff inside
 463           your box.  If you say Y here, the kernel will include drivers and
 464           infrastructure code to support PCI bus devices.
 465
 466           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 467           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 468           All of these platforms are extremely obscure, so say N if unsure.
 469
 470 config PCI_DOMAINS
 471         def_bool PCI if SPARC64
 472
 473 config PCI_SYSCALL
 474         def_bool PCI
 475
 476 config PCIC_PCI
 477         bool
 478         depends on PCI && SPARC32 && !SPARC_LEON
 479         default y
 480
 481 config LEON_PCI
 482         bool
 483         depends on PCI && SPARC_LEON
 484         default y
 485
 486 config SPARC_GRPCI1
 487         bool "GRPCI Host Bridge Support"
 488         depends on LEON_PCI
 489         default y
 490         help
 491           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 492           PCI host controller is typically found in GRLIB SPARC32/LEON
 493           systems. The driver has one property (all_pci_errors) controlled
 494           from the bootloader that makes the GRPCI to generate interrupts
 495           on detected PCI Parity and System errors.
 496
 497 config SPARC_GRPCI2
 498         bool "GRPCI2 Host Bridge Support"
 499         depends on LEON_PCI
 500         default y
 501         help
 502           Say Y here to include the GRPCI2 Host Bridge Driver.
 503
 504 source "drivers/pci/Kconfig"
 505
 506 source "drivers/pcmcia/Kconfig"
 507
 508 config SUN_OPENPROMFS
 509         tristate "Openprom tree appears in /proc/openprom"
 510         help
 511           If you say Y, the OpenPROM device tree will be available as a
 512           virtual file system, which you can mount to /proc/openprom by "mount
 513           -t openpromfs none /proc/openprom".
 514
 515           To compile the /proc/openprom support as a module, choose M here: the
 516           module will be called openpromfs.
 517
 518           Only choose N if you know in advance that you will not need to modify
 519           OpenPROM settings on the running system.
 520
 521 # Makefile helpers
 522 config SPARC64_PCI
 523         bool
 524         default y
 525         depends on SPARC64 && PCI
 526
 527 config SPARC64_PCI_MSI
 528         bool
 529         default y
 530         depends on SPARC64_PCI && PCI_MSI
 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         select COMPAT_OLD_SIGACTION
 546
 547 config SYSVIPC_COMPAT
 548         bool
 549         depends on COMPAT && SYSVIPC
 550         default y
 551
 552 config KEYS_COMPAT
 553         def_bool y if COMPAT && KEYS
 554
 555 endmenu
 556
 557 source "net/Kconfig"
 558
 559 source "drivers/Kconfig"
 560
 561 source "drivers/sbus/char/Kconfig"
 562
 563 source "fs/Kconfig"
 564
 565 source "arch/sparc/Kconfig.debug"
 566
 567 source "security/Kconfig"
 568
 569 source "crypto/Kconfig"
 570
 571 source "lib/Kconfig"