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 HAVE_EXIT_THREAD
  24         select SYSCTL_EXCEPTION_TRACE
  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_API_DEBUG
  30         select HAVE_ARCH_JUMP_LABEL if SPARC64
  31         select GENERIC_IRQ_SHOW
  32         select ARCH_WANT_IPC_PARSE_VERSION
  33         select GENERIC_PCI_IOMAP
  34         select HAVE_NMI_WATCHDOG if SPARC64
  35         select HAVE_CBPF_JIT
  36         select HAVE_DEBUG_BUGVERBOSE
  37         select GENERIC_SMP_IDLE_THREAD
  38         select GENERIC_CLOCKEVENTS
  39         select GENERIC_STRNCPY_FROM_USER
  40         select GENERIC_STRNLEN_USER
  41         select MODULES_USE_ELF_RELA
  42         select ODD_RT_SIGACTION
  43         select OLD_SIGSUSPEND
  44         select ARCH_HAS_SG_CHAIN
  45         select CPU_NO_EFFICIENT_FFS
  46         select HAVE_ARCH_HARDENED_USERCOPY
  47
  48 config SPARC32
  49         def_bool !64BIT
  50         select GENERIC_ATOMIC64
  51         select CLZ_TAB
  52         select HAVE_UID16
  53         select OLD_SIGACTION
  54
  55 config SPARC64
  56         def_bool 64BIT
  57         select HAVE_FUNCTION_TRACER
  58         select HAVE_FUNCTION_GRAPH_TRACER
  59         select HAVE_FUNCTION_GRAPH_FP_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_ARCH_TRANSPARENT_HUGEPAGE
  66         select HAVE_DYNAMIC_FTRACE
  67         select HAVE_FTRACE_MCOUNT_RECORD
  68         select HAVE_SYSCALL_TRACEPOINTS
  69         select HAVE_CONTEXT_TRACKING
  70         select HAVE_DEBUG_KMEMLEAK
  71         select SPARSE_IRQ
  72         select RTC_DRV_CMOS
  73         select RTC_DRV_BQ4802
  74         select RTC_DRV_SUN4V
  75         select RTC_DRV_STARFIRE
  76         select HAVE_PERF_EVENTS
  77         select PERF_USE_VMALLOC
  78         select IRQ_PREFLOW_FASTEOI
  79         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  80         select HAVE_C_RECORDMCOUNT
  81         select NO_BOOTMEM
  82         select HAVE_ARCH_AUDITSYSCALL
  83         select ARCH_SUPPORTS_ATOMIC_RMW
  84         select HAVE_NMI
  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 ARCH_PROC_KCORE_TEXT
  92         def_bool y
  93
  94 config IOMMU_HELPER
  95         bool
  96         default y if SPARC64
  97
  98 config STACKTRACE_SUPPORT
  99         bool
 100         default y if SPARC64
 101
 102 config LOCKDEP_SUPPORT
 103         bool
 104         default y if SPARC64
 105
 106 config ARCH_HIBERNATION_POSSIBLE
 107         def_bool 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 ARCH_SUPPORTS_DEBUG_PAGEALLOC
 145         def_bool y if SPARC64
 146
 147 config PGTABLE_LEVELS
 148         default 4 if 64BIT
 149         default 3
 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 uni- 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           uniprocessor machines. On a uniprocessor 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
 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         help
 255           Say Y here to experiment with turning CPUs off and on.  CPUs
 256           can be controlled through /sys/devices/system/cpu/cpu#.
 257           Say N if you want to disable CPU hotplug.
 258
 259 if SPARC64
 260 source "drivers/cpufreq/Kconfig"
 261 endif
 262
 263 config US3_MC
 264         tristate "UltraSPARC-III Memory Controller driver"
 265         depends on SPARC64
 266         default y
 267         help
 268           This adds a driver for the UltraSPARC-III memory controller.
 269           Loading this driver allows exact mnemonic strings to be
 270           printed in the event of a memory error, so that the faulty DIMM
 271           on the motherboard can be matched to the error.
 272
 273           If in doubt, say Y, as this information can be very useful.
 274
 275 # Global things across all Sun machines.
 276 config GENERIC_LOCKBREAK
 277         bool
 278         default y
 279         depends on SPARC64 && SMP && PREEMPT
 280
 281 config NUMA
 282         bool "NUMA support"
 283         depends on SPARC64 && SMP
 284
 285 config NODES_SHIFT
 286         int
 287         default "4"
 288         depends on NEED_MULTIPLE_NODES
 289
 290 # Some NUMA nodes have memory ranges that span
 291 # other nodes.  Even though a pfn is valid and
 292 # between a node's start and end pfns, it may not
 293 # reside on that node.  See memmap_init_zone()
 294 # for details.
 295 config NODES_SPAN_OTHER_NODES
 296         def_bool y
 297         depends on NEED_MULTIPLE_NODES
 298
 299 config ARCH_SELECT_MEMORY_MODEL
 300         def_bool y if SPARC64
 301
 302 config ARCH_SPARSEMEM_ENABLE
 303         def_bool y if SPARC64
 304         select SPARSEMEM_VMEMMAP_ENABLE
 305
 306 config ARCH_SPARSEMEM_DEFAULT
 307         def_bool y if SPARC64
 308
 309 source "mm/Kconfig"
 310
 311 if SPARC64
 312 source "kernel/power/Kconfig"
 313 endif
 314
 315 config SCHED_SMT
 316         bool "SMT (Hyperthreading) scheduler support"
 317         depends on SPARC64 && SMP
 318         default y
 319         help
 320           SMT scheduler support improves the CPU scheduler's decision making
 321           when dealing with SPARC cpus at a cost of slightly increased overhead
 322           in some places. If unsure say N here.
 323
 324 config SCHED_MC
 325         bool "Multi-core scheduler support"
 326         depends on SPARC64 && SMP
 327         default y
 328         help
 329           Multi-core scheduler support improves the CPU scheduler's decision
 330           making when dealing with multi-core CPU chips at a cost of slightly
 331           increased overhead in some places. If unsure say N here.
 332
 333 source "kernel/Kconfig.preempt"
 334
 335 config CMDLINE_BOOL
 336         bool "Default bootloader kernel arguments"
 337         depends on SPARC64
 338
 339 config CMDLINE
 340         string "Initial kernel command string"
 341         depends on CMDLINE_BOOL
 342         default "console=ttyS0,9600 root=/dev/sda1"
 343         help
 344           Say Y here if you want to be able to pass default arguments to
 345           the kernel. This will be overridden by the bootloader, if you
 346           use one (such as SILO). This is most useful if you want to boot
 347           a kernel from TFTP, and want default options to be available
 348           with having them passed on the command line.
 349
 350           NOTE: This option WILL override the PROM bootargs setting!
 351
 352 config SUN_PM
 353         bool
 354         default y if SPARC32
 355         help
 356           Enable power management and CPU standby features on supported
 357           SPARC platforms.
 358
 359 config SPARC_LED
 360         tristate "Sun4m LED driver"
 361         depends on SPARC32
 362         help
 363           This driver toggles the front-panel LED on sun4m systems
 364           in a user-specifiable manner.  Its state can be probed
 365           by reading /proc/led and its blinking mode can be changed
 366           via writes to /proc/led
 367
 368 config SERIAL_CONSOLE
 369         bool
 370         depends on SPARC32
 371         default y
 372         ---help---
 373           If you say Y here, it will be possible to use a serial port as the
 374           system console (the system console is the device which receives all
 375           kernel messages and warnings and which allows logins in single user
 376           mode). This could be useful if some terminal or printer is connected
 377           to that serial port.
 378
 379           Even if you say Y here, the currently visible virtual console
 380           (/dev/tty0) will still be used as the system console by default, but
 381           you can alter that using a kernel command line option such as
 382           "console=ttyS1". (Try "man bootparam" or see the documentation of
 383           your boot loader (silo) about how to pass options to the kernel at
 384           boot time.)
 385
 386           If you don't have a graphics card installed and you say Y here, the
 387           kernel will automatically use the first serial line, /dev/ttyS0, as
 388           system console.
 389
 390           If unsure, say N.
 391
 392 config SPARC_LEON
 393         bool "Sparc Leon processor family"
 394         depends on SPARC32
 395         select USB_EHCI_BIG_ENDIAN_MMIO
 396         select USB_EHCI_BIG_ENDIAN_DESC
 397         ---help---
 398           If you say Y here if you are running on a SPARC-LEON processor.
 399           The LEON processor is a synthesizable VHDL model of the
 400           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 401           IP cores that are distributed under GPL. GRLIB can be downloaded
 402           from www.gaisler.com. You can download a sparc-linux cross-compilation
 403           toolchain at www.gaisler.com.
 404
 405 if SPARC_LEON
 406 menu "U-Boot options"
 407
 408 config UBOOT_LOAD_ADDR
 409         hex "uImage Load Address"
 410         default 0x40004000
 411         ---help---
 412          U-Boot kernel load address, the address in physical address space
 413          where u-boot will place the Linux kernel before booting it.
 414          This address is normally the base address of main memory + 0x4000.
 415
 416 config UBOOT_FLASH_ADDR
 417         hex "uImage.o Load Address"
 418         default 0x00080000
 419         ---help---
 420          Optional setting only affecting the uImage.o ELF-image used to
 421          download the uImage file to the target using a ELF-loader other than
 422          U-Boot. It may for example be used to download an uImage to FLASH with
 423          the GRMON utility before even starting u-boot.
 424
 425 config UBOOT_ENTRY_ADDR
 426         hex "uImage Entry Address"
 427         default 0xf0004000
 428         ---help---
 429          Do not change this unless you know what you're doing. This is
 430          hardcoded by the SPARC32 and LEON port.
 431
 432          This is the virtual address u-boot jumps to when booting the Linux
 433          Kernel.
 434
 435 endmenu
 436 endif
 437
 438 endmenu
 439
 440 menu "Bus options (PCI etc.)"
 441 config SBUS
 442         bool
 443         default y
 444
 445 config SBUSCHAR
 446         bool
 447         default y
 448
 449 config SUN_LDOMS
 450         bool "Sun Logical Domains support"
 451         depends on SPARC64
 452         help
 453           Say Y here is you want to support virtual devices via
 454           Logical Domains.
 455
 456 config PCI
 457         bool "Support for PCI and PS/2 keyboard/mouse"
 458         help
 459           Find out whether your system includes a PCI bus. PCI is the name of
 460           a bus system, i.e. the way the CPU talks to the other stuff inside
 461           your box.  If you say Y here, the kernel will include drivers and
 462           infrastructure code to support PCI bus devices.
 463
 464           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 465           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 466           All of these platforms are extremely obscure, so say N if unsure.
 467
 468 config PCI_DOMAINS
 469         def_bool PCI if SPARC64
 470
 471 config PCI_SYSCALL
 472         def_bool PCI
 473
 474 config PCIC_PCI
 475         bool
 476         depends on PCI && SPARC32 && !SPARC_LEON
 477         default y
 478
 479 config LEON_PCI
 480         bool
 481         depends on PCI && SPARC_LEON
 482         default y
 483
 484 config SPARC_GRPCI1
 485         bool "GRPCI Host Bridge Support"
 486         depends on LEON_PCI
 487         default y
 488         help
 489           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 490           PCI host controller is typically found in GRLIB SPARC32/LEON
 491           systems. The driver has one property (all_pci_errors) controlled
 492           from the bootloader that makes the GRPCI to generate interrupts
 493           on detected PCI Parity and System errors.
 494
 495 config SPARC_GRPCI2
 496         bool "GRPCI2 Host Bridge Support"
 497         depends on LEON_PCI
 498         default y
 499         help
 500           Say Y here to include the GRPCI2 Host Bridge Driver.
 501
 502 source "drivers/pci/Kconfig"
 503
 504 source "drivers/pcmcia/Kconfig"
 505
 506 config SUN_OPENPROMFS
 507         tristate "Openprom tree appears in /proc/openprom"
 508         help
 509           If you say Y, the OpenPROM device tree will be available as a
 510           virtual file system, which you can mount to /proc/openprom by "mount
 511           -t openpromfs none /proc/openprom".
 512
 513           To compile the /proc/openprom support as a module, choose M here: the
 514           module will be called openpromfs.
 515
 516           Only choose N if you know in advance that you will not need to modify
 517           OpenPROM settings on the running system.
 518
 519 # Makefile helpers
 520 config SPARC64_PCI
 521         bool
 522         default y
 523         depends on SPARC64 && PCI
 524
 525 config SPARC64_PCI_MSI
 526         bool
 527         default y
 528         depends on SPARC64_PCI && PCI_MSI
 529
 530 endmenu
 531
 532 menu "Executable file formats"
 533
 534 source "fs/Kconfig.binfmt"
 535
 536 config COMPAT
 537         bool
 538         depends on SPARC64
 539         default y
 540         select COMPAT_BINFMT_ELF
 541         select HAVE_UID16
 542         select ARCH_WANT_OLD_COMPAT_IPC
 543         select COMPAT_OLD_SIGACTION
 544
 545 config SYSVIPC_COMPAT
 546         bool
 547         depends on COMPAT && SYSVIPC
 548         default y
 549
 550 config KEYS_COMPAT
 551         def_bool y if COMPAT && KEYS
 552
 553 endmenu
 554
 555 source "net/Kconfig"
 556
 557 source "drivers/Kconfig"
 558
 559 source "drivers/sbus/char/Kconfig"
 560
 561 source "fs/Kconfig"
 562
 563 source "arch/sparc/Kconfig.debug"
 564
 565 source "security/Kconfig"
 566
 567 source "crypto/Kconfig"
 568
 569 source "lib/Kconfig"