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_ARCH_TRANSPARENT_HUGEPAGE
  66         select HAVE_DYNAMIC_FTRACE
  67         select HAVE_FTRACE_MCOUNT_RECORD
  68         select HAVE_SYSCALL_TRACEPOINTS
  69         select HAVE_DEBUG_KMEMLEAK
  70         select RTC_DRV_CMOS
  71         select RTC_DRV_BQ4802
  72         select RTC_DRV_SUN4V
  73         select RTC_DRV_STARFIRE
  74         select HAVE_PERF_EVENTS
  75         select PERF_USE_VMALLOC
  76         select IRQ_PREFLOW_FASTEOI
  77         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  78         select HAVE_C_RECORDMCOUNT
  79         select NO_BOOTMEM
  80
  81 config ARCH_DEFCONFIG
  82         string
  83         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  84         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  85
  86 config IOMMU_HELPER
  87         bool
  88         default y if SPARC64
  89
  90 config STACKTRACE_SUPPORT
  91         bool
  92         default y if SPARC64
  93
  94 config LOCKDEP_SUPPORT
  95         bool
  96         default y if SPARC64
  97
  98 config HAVE_LATENCYTOP_SUPPORT
  99         bool
 100         default y if SPARC64
 101
 102 config ARCH_HIBERNATION_POSSIBLE
 103         def_bool y if SPARC64
 104
 105 config AUDIT_ARCH
 106         bool
 107         default y
 108
 109 config HAVE_SETUP_PER_CPU_AREA
 110         def_bool y if SPARC64
 111
 112 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config MMU
 119         bool
 120         default y
 121
 122 config HIGHMEM
 123         bool
 124         default y if SPARC32
 125
 126 config ZONE_DMA
 127         bool
 128         default y if SPARC32
 129
 130 config NEED_DMA_MAP_STATE
 131         def_bool y
 132
 133 config NEED_SG_DMA_LENGTH
 134         def_bool y
 135
 136 config GENERIC_ISA_DMA
 137         bool
 138         default y if SPARC32
 139
 140 config GENERIC_GPIO
 141         bool
 142         help
 143           Generic GPIO API support
 144
 145 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 146         def_bool y if SPARC64
 147
 148 source "init/Kconfig"
 149
 150 source "kernel/Kconfig.freezer"
 151
 152 menu "Processor type and features"
 153
 154 config SMP
 155         bool "Symmetric multi-processing support"
 156         ---help---
 157           This enables support for systems with more than one CPU. If you have
 158           a system with only one CPU, say N. If you have a system with more
 159           than one CPU, say Y.
 160
 161           If you say N here, the kernel will run on single and multiprocessor
 162           machines, but will use only one CPU of a multiprocessor machine. If
 163           you say Y here, the kernel will run on many, but not all,
 164           singleprocessor machines. On a singleprocessor machine, the kernel
 165           will run faster if you say N here.
 166
 167           People using multiprocessor machines who say Y here should also say
 168           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 169           Management" code will be disabled if you say Y here.
 170
 171           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 172           available at <http://www.tldp.org/docs.html#howto>.
 173
 174           If you don't know what to do here, say N.
 175
 176 config NR_CPUS
 177         int "Maximum number of CPUs"
 178         depends on SMP
 179         range 2 32 if SPARC32
 180         range 2 1024 if SPARC64
 181         default 32 if SPARC32
 182         default 64 if SPARC64
 183
 184 source kernel/Kconfig.hz
 185
 186 config RWSEM_GENERIC_SPINLOCK
 187         bool
 188         default y if SPARC32
 189
 190 config RWSEM_XCHGADD_ALGORITHM
 191         bool
 192         default y if SPARC64
 193
 194 config GENERIC_HWEIGHT
 195         bool
 196         default y
 197
 198 config GENERIC_CALIBRATE_DELAY
 199         bool
 200         default y
 201
 202 config ARCH_MAY_HAVE_PC_FDC
 203         bool
 204         default y
 205
 206 config EMULATED_CMPXCHG
 207         bool
 208         default y if SPARC32
 209         help
 210           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 211           is emulated, and therefore it is not completely atomic.
 212
 213 # Makefile helpers
 214 config SPARC32_SMP
 215         bool
 216         default y
 217         depends on SPARC32 && SMP
 218
 219 config SPARC64_SMP
 220         bool
 221         default y
 222         depends on SPARC64 && SMP
 223
 224 config EARLYFB
 225         bool "Support for early boot text console"
 226         default y
 227         depends on SPARC64
 228         help
 229           Say Y here to enable a faster early framebuffer boot console.
 230
 231 config SECCOMP
 232         bool "Enable seccomp to safely compute untrusted bytecode"
 233         depends on SPARC64 && PROC_FS
 234         default y
 235         help
 236           This kernel feature is useful for number crunching applications
 237           that may need to compute untrusted bytecode during their
 238           execution. By using pipes or other transports made available to
 239           the process as file descriptors supporting the read/write
 240           syscalls, it's possible to isolate those applications in
 241           their own address space using seccomp. Once seccomp is
 242           enabled via /proc/<pid>/seccomp, it cannot be disabled
 243           and the task is only allowed to execute a few safe syscalls
 244           defined by each seccomp mode.
 245
 246           If unsure, say Y. Only embedded should say N here.
 247
 248 config HOTPLUG_CPU
 249         bool "Support for hot-pluggable CPUs"
 250         depends on SPARC64 && SMP
 251         select HOTPLUG
 252         help
 253           Say Y here to experiment with turning CPUs off and on.  CPUs
 254           can be controlled through /sys/devices/system/cpu/cpu#.
 255           Say N if you want to disable CPU hotplug.
 256
 257 if SPARC64
 258 source "drivers/cpufreq/Kconfig"
 259 endif
 260
 261 config US3_MC
 262         tristate "UltraSPARC-III Memory Controller driver"
 263         depends on SPARC64
 264         default y
 265         help
 266           This adds a driver for the UltraSPARC-III memory controller.
 267           Loading this driver allows exact mnemonic strings to be
 268           printed in the event of a memory error, so that the faulty DIMM
 269           on the motherboard can be matched to the error.
 270
 271           If in doubt, say Y, as this information can be very useful.
 272
 273 # Global things across all Sun machines.
 274 config GENERIC_LOCKBREAK
 275         bool
 276         default y
 277         depends on SPARC64 && SMP && PREEMPT
 278
 279 config NUMA
 280         bool "NUMA support"
 281         depends on SPARC64 && SMP
 282
 283 config NODES_SHIFT
 284         int
 285         default "4"
 286         depends on NEED_MULTIPLE_NODES
 287
 288 # Some NUMA nodes have memory ranges that span
 289 # other nodes.  Even though a pfn is valid and
 290 # between a node's start and end pfns, it may not
 291 # reside on that node.  See memmap_init_zone()
 292 # for details.
 293 config NODES_SPAN_OTHER_NODES
 294         def_bool y
 295         depends on NEED_MULTIPLE_NODES
 296
 297 config ARCH_SELECT_MEMORY_MODEL
 298         def_bool y if SPARC64
 299
 300 config ARCH_SPARSEMEM_ENABLE
 301         def_bool y if SPARC64
 302         select SPARSEMEM_VMEMMAP_ENABLE
 303
 304 config ARCH_SPARSEMEM_DEFAULT
 305         def_bool y if SPARC64
 306
 307 source "mm/Kconfig"
 308
 309 if SPARC64
 310 source "kernel/power/Kconfig"
 311 endif
 312
 313 config SCHED_SMT
 314         bool "SMT (Hyperthreading) scheduler support"
 315         depends on SPARC64 && SMP
 316         default y
 317         help
 318           SMT scheduler support improves the CPU scheduler's decision making
 319           when dealing with SPARC cpus at a cost of slightly increased overhead
 320           in some places. If unsure say N here.
 321
 322 config SCHED_MC
 323         bool "Multi-core scheduler support"
 324         depends on SPARC64 && SMP
 325         default y
 326         help
 327           Multi-core scheduler support improves the CPU scheduler's decision
 328           making when dealing with multi-core CPU chips at a cost of slightly
 329           increased overhead in some places. If unsure say N here.
 330
 331 source "kernel/Kconfig.preempt"
 332
 333 config CMDLINE_BOOL
 334         bool "Default bootloader kernel arguments"
 335         depends on SPARC64
 336
 337 config CMDLINE
 338         string "Initial kernel command string"
 339         depends on CMDLINE_BOOL
 340         default "console=ttyS0,9600 root=/dev/sda1"
 341         help
 342           Say Y here if you want to be able to pass default arguments to
 343           the kernel. This will be overridden by the bootloader, if you
 344           use one (such as SILO). This is most useful if you want to boot
 345           a kernel from TFTP, and want default options to be available
 346           with having them passed on the command line.
 347
 348           NOTE: This option WILL override the PROM bootargs setting!
 349
 350 config SUN_PM
 351         bool
 352         default y if SPARC32
 353         help
 354           Enable power management and CPU standby features on supported
 355           SPARC platforms.
 356
 357 config SPARC_LED
 358         tristate "Sun4m LED driver"
 359         depends on SPARC32
 360         help
 361           This driver toggles the front-panel LED on sun4m systems
 362           in a user-specifiable manner.  Its state can be probed
 363           by reading /proc/led and its blinking mode can be changed
 364           via writes to /proc/led
 365
 366 config SERIAL_CONSOLE
 367         bool
 368         depends on SPARC32
 369         default y
 370         ---help---
 371           If you say Y here, it will be possible to use a serial port as the
 372           system console (the system console is the device which receives all
 373           kernel messages and warnings and which allows logins in single user
 374           mode). This could be useful if some terminal or printer is connected
 375           to that serial port.
 376
 377           Even if you say Y here, the currently visible virtual console
 378           (/dev/tty0) will still be used as the system console by default, but
 379           you can alter that using a kernel command line option such as
 380           "console=ttyS1". (Try "man bootparam" or see the documentation of
 381           your boot loader (silo) about how to pass options to the kernel at
 382           boot time.)
 383
 384           If you don't have a graphics card installed and you say Y here, the
 385           kernel will automatically use the first serial line, /dev/ttyS0, as
 386           system console.
 387
 388           If unsure, say N.
 389
 390 config SPARC_LEON
 391         bool "Sparc Leon processor family"
 392         depends on SPARC32
 393         select USB_EHCI_BIG_ENDIAN_MMIO
 394         select USB_EHCI_BIG_ENDIAN_DESC
 395         ---help---
 396           If you say Y here if you are running on a SPARC-LEON processor.
 397           The LEON processor is a synthesizable VHDL model of the
 398           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 399           IP cores that are distributed under GPL. GRLIB can be downloaded
 400           from www.gaisler.com. You can download a sparc-linux cross-compilation
 401           toolchain at www.gaisler.com.
 402
 403 if SPARC_LEON
 404 menu "U-Boot options"
 405
 406 config UBOOT_LOAD_ADDR
 407         hex "uImage Load Address"
 408         default 0x40004000
 409         ---help---
 410          U-Boot kernel load address, the address in physical address space
 411          where u-boot will place the Linux kernel before booting it.
 412          This address is normally the base address of main memory + 0x4000.
 413
 414 config UBOOT_FLASH_ADDR
 415         hex "uImage.o Load Address"
 416         default 0x00080000
 417         ---help---
 418          Optional setting only affecting the uImage.o ELF-image used to
 419          download the uImage file to the target using a ELF-loader other than
 420          U-Boot. It may for example be used to download an uImage to FLASH with
 421          the GRMON utility before even starting u-boot.
 422
 423 config UBOOT_ENTRY_ADDR
 424         hex "uImage Entry Address"
 425         default 0xf0004000
 426         ---help---
 427          Do not change this unless you know what you're doing. This is
 428          hardcoded by the SPARC32 and LEON port.
 429
 430          This is the virtual address u-boot jumps to when booting the Linux
 431          Kernel.
 432
 433 endmenu
 434 endif
 435
 436 endmenu
 437
 438 menu "Bus options (PCI etc.)"
 439 config SBUS
 440         bool
 441         default y
 442
 443 config SBUSCHAR
 444         bool
 445         default y
 446
 447 config SUN_LDOMS
 448         bool "Sun Logical Domains support"
 449         depends on SPARC64
 450         help
 451           Say Y here is you want to support virtual devices via
 452           Logical Domains.
 453
 454 config PCI
 455         bool "Support for PCI and PS/2 keyboard/mouse"
 456         help
 457           Find out whether your system includes a PCI bus. PCI is the name of
 458           a bus system, i.e. the way the CPU talks to the other stuff inside
 459           your box.  If you say Y here, the kernel will include drivers and
 460           infrastructure code to support PCI bus devices.
 461
 462           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 463           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 464           All of these platforms are extremely obscure, so say N if unsure.
 465
 466 config PCI_DOMAINS
 467         def_bool PCI if SPARC64
 468
 469 config PCI_SYSCALL
 470         def_bool PCI
 471
 472 config PCIC_PCI
 473         bool
 474         depends on PCI && SPARC32 && !SPARC_LEON
 475         default y
 476
 477 config LEON_PCI
 478         bool
 479         depends on PCI && SPARC_LEON
 480         default y
 481
 482 config SPARC_GRPCI1
 483         bool "GRPCI Host Bridge Support"
 484         depends on LEON_PCI
 485         default y
 486         help
 487           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 488           PCI host controller is typically found in GRLIB SPARC32/LEON
 489           systems. The driver has one property (all_pci_errors) controlled
 490           from the bootloader that makes the GRPCI to generate interrupts
 491           on detected PCI Parity and System errors.
 492
 493 config SPARC_GRPCI2
 494         bool "GRPCI2 Host Bridge Support"
 495         depends on LEON_PCI
 496         default y
 497         help
 498           Say Y here to include the GRPCI2 Host Bridge Driver.
 499
 500 source "drivers/pci/Kconfig"
 501
 502 source "drivers/pcmcia/Kconfig"
 503
 504 config SUN_OPENPROMFS
 505         tristate "Openprom tree appears in /proc/openprom"
 506         help
 507           If you say Y, the OpenPROM device tree will be available as a
 508           virtual file system, which you can mount to /proc/openprom by "mount
 509           -t openpromfs none /proc/openprom".
 510
 511           To compile the /proc/openprom support as a module, choose M here: the
 512           module will be called openpromfs.
 513
 514           Only choose N if you know in advance that you will not need to modify
 515           OpenPROM settings on the running system.
 516
 517 # Makefile helper
 518 config SPARC64_PCI
 519         bool
 520         default y
 521         depends on SPARC64 && PCI
 522
 523 endmenu
 524
 525 menu "Executable file formats"
 526
 527 source "fs/Kconfig.binfmt"
 528
 529 config COMPAT
 530         bool
 531         depends on SPARC64
 532         default y
 533         select COMPAT_BINFMT_ELF
 534         select HAVE_UID16
 535         select ARCH_WANT_OLD_COMPAT_IPC
 536         select COMPAT_OLD_SIGACTION
 537
 538 config SYSVIPC_COMPAT
 539         bool
 540         depends on COMPAT && SYSVIPC
 541         default y
 542
 543 config KEYS_COMPAT
 544         def_bool y if COMPAT && KEYS
 545
 546 endmenu
 547
 548 source "net/Kconfig"
 549
 550 source "drivers/Kconfig"
 551
 552 source "drivers/sbus/char/Kconfig"
 553
 554 source "fs/Kconfig"
 555
 556 source "arch/sparc/Kconfig.debug"
 557
 558 source "security/Kconfig"
 559
 560 source "crypto/Kconfig"
 561
 562 source "lib/Kconfig"