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 HAVE_DMA_ATTRS
  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_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         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 IOMMU_HELPER
  90         bool
  91         default y if SPARC64
  92
  93 config STACKTRACE_SUPPORT
  94         bool
  95         default y if SPARC64
  96
  97 config LOCKDEP_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config HAVE_LATENCYTOP_SUPPORT
 102         bool
 103         default y if SPARC64
 104
 105 config ARCH_HIBERNATION_POSSIBLE
 106         def_bool y if SPARC64
 107
 108 config AUDIT_ARCH
 109         bool
 110         default y
 111
 112 config HAVE_SETUP_PER_CPU_AREA
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 119         def_bool y if SPARC64
 120
 121 config MMU
 122         bool
 123         default y
 124
 125 config HIGHMEM
 126         bool
 127         default y if SPARC32
 128
 129 config ZONE_DMA
 130         bool
 131         default y if SPARC32
 132
 133 config NEED_DMA_MAP_STATE
 134         def_bool y
 135
 136 config NEED_SG_DMA_LENGTH
 137         def_bool y
 138
 139 config GENERIC_ISA_DMA
 140         bool
 141         default y if SPARC32
 142
 143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 144         def_bool y if SPARC64
 145
 146 source "init/Kconfig"
 147
 148 source "kernel/Kconfig.freezer"
 149
 150 menu "Processor type and features"
 151
 152 config SMP
 153         bool "Symmetric multi-processing support"
 154         ---help---
 155           This enables support for systems with more than one CPU. If you have
 156           a system with only one CPU, say N. If you have a system with more
 157           than one CPU, say Y.
 158
 159           If you say N here, the kernel will run on uni- and multiprocessor
 160           machines, but will use only one CPU of a multiprocessor machine. If
 161           you say Y here, the kernel will run on many, but not all,
 162           uniprocessor machines. On a uniprocessor machine, the kernel
 163           will run faster if you say N here.
 164
 165           People using multiprocessor machines who say Y here should also say
 166           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 167           Management" code will be disabled if you say Y here.
 168
 169           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 170           available at <http://www.tldp.org/docs.html#howto>.
 171
 172           If you don't know what to do here, say N.
 173
 174 config NR_CPUS
 175         int "Maximum number of CPUs"
 176         depends on SMP
 177         range 2 32 if SPARC32
 178         range 2 1024 if SPARC64
 179         default 32 if SPARC32
 180         default 64 if SPARC64
 181
 182 source kernel/Kconfig.hz
 183
 184 config RWSEM_GENERIC_SPINLOCK
 185         bool
 186         default y if SPARC32
 187
 188 config RWSEM_XCHGADD_ALGORITHM
 189         bool
 190         default y if SPARC64
 191
 192 config GENERIC_HWEIGHT
 193         bool
 194         default y
 195
 196 config GENERIC_CALIBRATE_DELAY
 197         bool
 198         default y
 199
 200 config ARCH_MAY_HAVE_PC_FDC
 201         bool
 202         default y
 203
 204 config EMULATED_CMPXCHG
 205         bool
 206         default y if SPARC32
 207         help
 208           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 209           is emulated, and therefore it is not completely atomic.
 210
 211 # Makefile helpers
 212 config SPARC32_SMP
 213         bool
 214         default y
 215         depends on SPARC32 && SMP
 216
 217 config SPARC64_SMP
 218         bool
 219         default y
 220         depends on SPARC64 && SMP
 221
 222 config EARLYFB
 223         bool "Support for early boot text console"
 224         default y
 225         depends on SPARC64
 226         help
 227           Say Y here to enable a faster early framebuffer boot console.
 228
 229 config SECCOMP
 230         bool "Enable seccomp to safely compute untrusted bytecode"
 231         depends on SPARC64 && PROC_FS
 232         default y
 233         help
 234           This kernel feature is useful for number crunching applications
 235           that may need to compute untrusted bytecode during their
 236           execution. By using pipes or other transports made available to
 237           the process as file descriptors supporting the read/write
 238           syscalls, it's possible to isolate those applications in
 239           their own address space using seccomp. Once seccomp is
 240           enabled via /proc/<pid>/seccomp, it cannot be disabled
 241           and the task is only allowed to execute a few safe syscalls
 242           defined by each seccomp mode.
 243
 244           If unsure, say Y. Only embedded should say N here.
 245
 246 config HOTPLUG_CPU
 247         bool "Support for hot-pluggable CPUs"
 248         depends on SPARC64 && SMP
 249         help
 250           Say Y here to experiment with turning CPUs off and on.  CPUs
 251           can be controlled through /sys/devices/system/cpu/cpu#.
 252           Say N if you want to disable CPU hotplug.
 253
 254 if SPARC64
 255 source "drivers/cpufreq/Kconfig"
 256 endif
 257
 258 config US3_MC
 259         tristate "UltraSPARC-III Memory Controller driver"
 260         depends on SPARC64
 261         default y
 262         help
 263           This adds a driver for the UltraSPARC-III memory controller.
 264           Loading this driver allows exact mnemonic strings to be
 265           printed in the event of a memory error, so that the faulty DIMM
 266           on the motherboard can be matched to the error.
 267
 268           If in doubt, say Y, as this information can be very useful.
 269
 270 # Global things across all Sun machines.
 271 config GENERIC_LOCKBREAK
 272         bool
 273         default y
 274         depends on SPARC64 && SMP && PREEMPT
 275
 276 config NUMA
 277         bool "NUMA support"
 278         depends on SPARC64 && SMP
 279
 280 config NODES_SHIFT
 281         int
 282         default "4"
 283         depends on NEED_MULTIPLE_NODES
 284
 285 # Some NUMA nodes have memory ranges that span
 286 # other nodes.  Even though a pfn is valid and
 287 # between a node's start and end pfns, it may not
 288 # reside on that node.  See memmap_init_zone()
 289 # for details.
 290 config NODES_SPAN_OTHER_NODES
 291         def_bool y
 292         depends on NEED_MULTIPLE_NODES
 293
 294 config ARCH_SELECT_MEMORY_MODEL
 295         def_bool y if SPARC64
 296
 297 config ARCH_SPARSEMEM_ENABLE
 298         def_bool y if SPARC64
 299         select SPARSEMEM_VMEMMAP_ENABLE
 300
 301 config ARCH_SPARSEMEM_DEFAULT
 302         def_bool y if SPARC64
 303
 304 source "mm/Kconfig"
 305
 306 if SPARC64
 307 source "kernel/power/Kconfig"
 308 endif
 309
 310 config SCHED_SMT
 311         bool "SMT (Hyperthreading) scheduler support"
 312         depends on SPARC64 && SMP
 313         default y
 314         help
 315           SMT scheduler support improves the CPU scheduler's decision making
 316           when dealing with SPARC cpus at a cost of slightly increased overhead
 317           in some places. If unsure say N here.
 318
 319 config SCHED_MC
 320         bool "Multi-core scheduler support"
 321         depends on SPARC64 && SMP
 322         default y
 323         help
 324           Multi-core scheduler support improves the CPU scheduler's decision
 325           making when dealing with multi-core CPU chips at a cost of slightly
 326           increased overhead in some places. If unsure say N here.
 327
 328 source "kernel/Kconfig.preempt"
 329
 330 config CMDLINE_BOOL
 331         bool "Default bootloader kernel arguments"
 332         depends on SPARC64
 333
 334 config CMDLINE
 335         string "Initial kernel command string"
 336         depends on CMDLINE_BOOL
 337         default "console=ttyS0,9600 root=/dev/sda1"
 338         help
 339           Say Y here if you want to be able to pass default arguments to
 340           the kernel. This will be overridden by the bootloader, if you
 341           use one (such as SILO). This is most useful if you want to boot
 342           a kernel from TFTP, and want default options to be available
 343           with having them passed on the command line.
 344
 345           NOTE: This option WILL override the PROM bootargs setting!
 346
 347 config SUN_PM
 348         bool
 349         default y if SPARC32
 350         help
 351           Enable power management and CPU standby features on supported
 352           SPARC platforms.
 353
 354 config SPARC_LED
 355         tristate "Sun4m LED driver"
 356         depends on SPARC32
 357         help
 358           This driver toggles the front-panel LED on sun4m systems
 359           in a user-specifiable manner.  Its state can be probed
 360           by reading /proc/led and its blinking mode can be changed
 361           via writes to /proc/led
 362
 363 config SERIAL_CONSOLE
 364         bool
 365         depends on SPARC32
 366         default y
 367         ---help---
 368           If you say Y here, it will be possible to use a serial port as the
 369           system console (the system console is the device which receives all
 370           kernel messages and warnings and which allows logins in single user
 371           mode). This could be useful if some terminal or printer is connected
 372           to that serial port.
 373
 374           Even if you say Y here, the currently visible virtual console
 375           (/dev/tty0) will still be used as the system console by default, but
 376           you can alter that using a kernel command line option such as
 377           "console=ttyS1". (Try "man bootparam" or see the documentation of
 378           your boot loader (silo) about how to pass options to the kernel at
 379           boot time.)
 380
 381           If you don't have a graphics card installed and you say Y here, the
 382           kernel will automatically use the first serial line, /dev/ttyS0, as
 383           system console.
 384
 385           If unsure, say N.
 386
 387 config SPARC_LEON
 388         bool "Sparc Leon processor family"
 389         depends on SPARC32
 390         select USB_EHCI_BIG_ENDIAN_MMIO
 391         select USB_EHCI_BIG_ENDIAN_DESC
 392         ---help---
 393           If you say Y here if you are running on a SPARC-LEON processor.
 394           The LEON processor is a synthesizable VHDL model of the
 395           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 396           IP cores that are distributed under GPL. GRLIB can be downloaded
 397           from www.gaisler.com. You can download a sparc-linux cross-compilation
 398           toolchain at www.gaisler.com.
 399
 400 if SPARC_LEON
 401 menu "U-Boot options"
 402
 403 config UBOOT_LOAD_ADDR
 404         hex "uImage Load Address"
 405         default 0x40004000
 406         ---help---
 407          U-Boot kernel load address, the address in physical address space
 408          where u-boot will place the Linux kernel before booting it.
 409          This address is normally the base address of main memory + 0x4000.
 410
 411 config UBOOT_FLASH_ADDR
 412         hex "uImage.o Load Address"
 413         default 0x00080000
 414         ---help---
 415          Optional setting only affecting the uImage.o ELF-image used to
 416          download the uImage file to the target using a ELF-loader other than
 417          U-Boot. It may for example be used to download an uImage to FLASH with
 418          the GRMON utility before even starting u-boot.
 419
 420 config UBOOT_ENTRY_ADDR
 421         hex "uImage Entry Address"
 422         default 0xf0004000
 423         ---help---
 424          Do not change this unless you know what you're doing. This is
 425          hardcoded by the SPARC32 and LEON port.
 426
 427          This is the virtual address u-boot jumps to when booting the Linux
 428          Kernel.
 429
 430 endmenu
 431 endif
 432
 433 endmenu
 434
 435 menu "Bus options (PCI etc.)"
 436 config SBUS
 437         bool
 438         default y
 439
 440 config SBUSCHAR
 441         bool
 442         default y
 443
 444 config SUN_LDOMS
 445         bool "Sun Logical Domains support"
 446         depends on SPARC64
 447         help
 448           Say Y here is you want to support virtual devices via
 449           Logical Domains.
 450
 451 config PCI
 452         bool "Support for PCI and PS/2 keyboard/mouse"
 453         help
 454           Find out whether your system includes a PCI bus. PCI is the name of
 455           a bus system, i.e. the way the CPU talks to the other stuff inside
 456           your box.  If you say Y here, the kernel will include drivers and
 457           infrastructure code to support PCI bus devices.
 458
 459           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 460           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 461           All of these platforms are extremely obscure, so say N if unsure.
 462
 463 config PCI_DOMAINS
 464         def_bool PCI if SPARC64
 465
 466 config PCI_SYSCALL
 467         def_bool PCI
 468
 469 config PCIC_PCI
 470         bool
 471         depends on PCI && SPARC32 && !SPARC_LEON
 472         default y
 473
 474 config LEON_PCI
 475         bool
 476         depends on PCI && SPARC_LEON
 477         default y
 478
 479 config SPARC_GRPCI1
 480         bool "GRPCI Host Bridge Support"
 481         depends on LEON_PCI
 482         default y
 483         help
 484           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 485           PCI host controller is typically found in GRLIB SPARC32/LEON
 486           systems. The driver has one property (all_pci_errors) controlled
 487           from the bootloader that makes the GRPCI to generate interrupts
 488           on detected PCI Parity and System errors.
 489
 490 config SPARC_GRPCI2
 491         bool "GRPCI2 Host Bridge Support"
 492         depends on LEON_PCI
 493         default y
 494         help
 495           Say Y here to include the GRPCI2 Host Bridge Driver.
 496
 497 source "drivers/pci/Kconfig"
 498
 499 source "drivers/pcmcia/Kconfig"
 500
 501 config SUN_OPENPROMFS
 502         tristate "Openprom tree appears in /proc/openprom"
 503         help
 504           If you say Y, the OpenPROM device tree will be available as a
 505           virtual file system, which you can mount to /proc/openprom by "mount
 506           -t openpromfs none /proc/openprom".
 507
 508           To compile the /proc/openprom support as a module, choose M here: the
 509           module will be called openpromfs.
 510
 511           Only choose N if you know in advance that you will not need to modify
 512           OpenPROM settings on the running system.
 513
 514 # Makefile helpers
 515 config SPARC64_PCI
 516         bool
 517         default y
 518         depends on SPARC64 && PCI
 519
 520 config SPARC64_PCI_MSI
 521         bool
 522         default y
 523         depends on SPARC64_PCI && PCI_MSI
 524
 525 endmenu
 526
 527 menu "Executable file formats"
 528
 529 source "fs/Kconfig.binfmt"
 530
 531 config COMPAT
 532         bool
 533         depends on SPARC64
 534         default y
 535         select COMPAT_BINFMT_ELF
 536         select HAVE_UID16
 537         select ARCH_WANT_OLD_COMPAT_IPC
 538         select COMPAT_OLD_SIGACTION
 539
 540 config SYSVIPC_COMPAT
 541         bool
 542         depends on COMPAT && SYSVIPC
 543         default y
 544
 545 config KEYS_COMPAT
 546         def_bool y if COMPAT && KEYS
 547
 548 endmenu
 549
 550 source "net/Kconfig"
 551
 552 source "drivers/Kconfig"
 553
 554 source "drivers/sbus/char/Kconfig"
 555
 556 source "fs/Kconfig"
 557
 558 source "arch/sparc/Kconfig.debug"
 559
 560 source "security/Kconfig"
 561
 562 source "crypto/Kconfig"
 563
 564 source "lib/Kconfig"