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_HAS_ATOMIC64_DEC_IF_POSITIVE
  25         select RTC_CLASS
  26         select RTC_DRV_M48T59
  27         select RTC_SYSTOHC
  28         select HAVE_DMA_API_DEBUG
  29         select HAVE_ARCH_JUMP_LABEL if SPARC64
  30         select GENERIC_IRQ_SHOW
  31         select ARCH_WANT_IPC_PARSE_VERSION
  32         select GENERIC_PCI_IOMAP
  33         select HAVE_NMI_WATCHDOG if SPARC64
  34         select HAVE_CBPF_JIT
  35         select HAVE_DEBUG_BUGVERBOSE
  36         select GENERIC_SMP_IDLE_THREAD
  37         select GENERIC_CLOCKEVENTS
  38         select GENERIC_STRNCPY_FROM_USER
  39         select GENERIC_STRNLEN_USER
  40         select MODULES_USE_ELF_RELA
  41         select ODD_RT_SIGACTION
  42         select OLD_SIGSUSPEND
  43         select ARCH_HAS_SG_CHAIN
  44
  45 config SPARC32
  46         def_bool !64BIT
  47         select GENERIC_ATOMIC64
  48         select CLZ_TAB
  49         select HAVE_UID16
  50         select OLD_SIGACTION
  51
  52 config SPARC64
  53         def_bool 64BIT
  54         select HAVE_FUNCTION_TRACER
  55         select HAVE_FUNCTION_GRAPH_TRACER
  56         select HAVE_FUNCTION_GRAPH_FP_TEST
  57         select HAVE_KRETPROBES
  58         select HAVE_KPROBES
  59         select HAVE_RCU_TABLE_FREE if SMP
  60         select HAVE_MEMBLOCK
  61         select HAVE_MEMBLOCK_NODE_MAP
  62         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  63         select HAVE_DYNAMIC_FTRACE
  64         select HAVE_FTRACE_MCOUNT_RECORD
  65         select HAVE_SYSCALL_TRACEPOINTS
  66         select HAVE_CONTEXT_TRACKING
  67         select HAVE_DEBUG_KMEMLEAK
  68         select SPARSE_IRQ
  69         select RTC_DRV_CMOS
  70         select RTC_DRV_BQ4802
  71         select RTC_DRV_SUN4V
  72         select RTC_DRV_STARFIRE
  73         select HAVE_PERF_EVENTS
  74         select PERF_USE_VMALLOC
  75         select IRQ_PREFLOW_FASTEOI
  76         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  77         select HAVE_C_RECORDMCOUNT
  78         select NO_BOOTMEM
  79         select HAVE_ARCH_AUDITSYSCALL
  80         select ARCH_SUPPORTS_ATOMIC_RMW
  81
  82 config ARCH_DEFCONFIG
  83         string
  84         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  85         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  86
  87 config ARCH_PROC_KCORE_TEXT
  88         def_bool y
  89
  90 config IOMMU_HELPER
  91         bool
  92         default y if SPARC64
  93
  94 config STACKTRACE_SUPPORT
  95         bool
  96         default y if SPARC64
  97
  98 config LOCKDEP_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 ARCH_SUPPORTS_DEBUG_PAGEALLOC
 141         def_bool y if SPARC64
 142
 143 config PGTABLE_LEVELS
 144         default 4 if 64BIT
 145         default 3
 146
 147 source "init/Kconfig"
 148
 149 source "kernel/Kconfig.freezer"
 150
 151 menu "Processor type and features"
 152
 153 config SMP
 154         bool "Symmetric multi-processing support"
 155         ---help---
 156           This enables support for systems with more than one CPU. If you have
 157           a system with only one CPU, say N. If you have a system with more
 158           than one CPU, say Y.
 159
 160           If you say N here, the kernel will run on uni- and multiprocessor
 161           machines, but will use only one CPU of a multiprocessor machine. If
 162           you say Y here, the kernel will run on many, but not all,
 163           uniprocessor machines. On a uniprocessor machine, the kernel
 164           will run faster if you say N here.
 165
 166           People using multiprocessor machines who say Y here should also say
 167           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 168           Management" code will be disabled if you say Y here.
 169
 170           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 171           available at <http://www.tldp.org/docs.html#howto>.
 172
 173           If you don't know what to do here, say N.
 174
 175 config NR_CPUS
 176         int "Maximum number of CPUs"
 177         depends on SMP
 178         range 2 32 if SPARC32
 179         range 2 1024 if SPARC64
 180         default 32 if SPARC32
 181         default 64 if SPARC64
 182
 183 source kernel/Kconfig.hz
 184
 185 config RWSEM_GENERIC_SPINLOCK
 186         bool
 187         default y if SPARC32
 188
 189 config RWSEM_XCHGADD_ALGORITHM
 190         bool
 191         default y if SPARC64
 192
 193 config GENERIC_HWEIGHT
 194         bool
 195         default y
 196
 197 config GENERIC_CALIBRATE_DELAY
 198         bool
 199         default y
 200
 201 config ARCH_MAY_HAVE_PC_FDC
 202         bool
 203         default y
 204
 205 config EMULATED_CMPXCHG
 206         bool
 207         default y if SPARC32
 208         help
 209           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 210           is emulated, and therefore it is not completely atomic.
 211
 212 # Makefile helpers
 213 config SPARC32_SMP
 214         bool
 215         default y
 216         depends on SPARC32 && SMP
 217
 218 config SPARC64_SMP
 219         bool
 220         default y
 221         depends on SPARC64 && SMP
 222
 223 config EARLYFB
 224         bool "Support for early boot text console"
 225         default y
 226         depends on SPARC64
 227         help
 228           Say Y here to enable a faster early framebuffer boot console.
 229
 230 config SECCOMP
 231         bool "Enable seccomp to safely compute untrusted bytecode"
 232         depends on SPARC64 && PROC_FS
 233         default y
 234         help
 235           This kernel feature is useful for number crunching applications
 236           that may need to compute untrusted bytecode during their
 237           execution. By using pipes or other transports made available to
 238           the process as file descriptors supporting the read/write
 239           syscalls, it's possible to isolate those applications in
 240           their own address space using seccomp. Once seccomp is
 241           enabled via /proc/<pid>/seccomp, it cannot be disabled
 242           and the task is only allowed to execute a few safe syscalls
 243           defined by each seccomp mode.
 244
 245           If unsure, say Y. Only embedded should say N here.
 246
 247 config HOTPLUG_CPU
 248         bool "Support for hot-pluggable CPUs"
 249         depends on SPARC64 && SMP
 250         help
 251           Say Y here to experiment with turning CPUs off and on.  CPUs
 252           can be controlled through /sys/devices/system/cpu/cpu#.
 253           Say N if you want to disable CPU hotplug.
 254
 255 if SPARC64
 256 source "drivers/cpufreq/Kconfig"
 257 endif
 258
 259 config US3_MC
 260         tristate "UltraSPARC-III Memory Controller driver"
 261         depends on SPARC64
 262         default y
 263         help
 264           This adds a driver for the UltraSPARC-III memory controller.
 265           Loading this driver allows exact mnemonic strings to be
 266           printed in the event of a memory error, so that the faulty DIMM
 267           on the motherboard can be matched to the error.
 268
 269           If in doubt, say Y, as this information can be very useful.
 270
 271 # Global things across all Sun machines.
 272 config GENERIC_LOCKBREAK
 273         bool
 274         default y
 275         depends on SPARC64 && SMP && PREEMPT
 276
 277 config NUMA
 278         bool "NUMA support"
 279         depends on SPARC64 && SMP
 280
 281 config NODES_SHIFT
 282         int
 283         default "4"
 284         depends on NEED_MULTIPLE_NODES
 285
 286 # Some NUMA nodes have memory ranges that span
 287 # other nodes.  Even though a pfn is valid and
 288 # between a node's start and end pfns, it may not
 289 # reside on that node.  See memmap_init_zone()
 290 # for details.
 291 config NODES_SPAN_OTHER_NODES
 292         def_bool y
 293         depends on NEED_MULTIPLE_NODES
 294
 295 config ARCH_SELECT_MEMORY_MODEL
 296         def_bool y if SPARC64
 297
 298 config ARCH_SPARSEMEM_ENABLE
 299         def_bool y if SPARC64
 300         select SPARSEMEM_VMEMMAP_ENABLE
 301
 302 config ARCH_SPARSEMEM_DEFAULT
 303         def_bool y if SPARC64
 304
 305 source "mm/Kconfig"
 306
 307 if SPARC64
 308 source "kernel/power/Kconfig"
 309 endif
 310
 311 config SCHED_SMT
 312         bool "SMT (Hyperthreading) scheduler support"
 313         depends on SPARC64 && SMP
 314         default y
 315         help
 316           SMT scheduler support improves the CPU scheduler's decision making
 317           when dealing with SPARC cpus at a cost of slightly increased overhead
 318           in some places. If unsure say N here.
 319
 320 config SCHED_MC
 321         bool "Multi-core scheduler support"
 322         depends on SPARC64 && SMP
 323         default y
 324         help
 325           Multi-core scheduler support improves the CPU scheduler's decision
 326           making when dealing with multi-core CPU chips at a cost of slightly
 327           increased overhead in some places. If unsure say N here.
 328
 329 source "kernel/Kconfig.preempt"
 330
 331 config CMDLINE_BOOL
 332         bool "Default bootloader kernel arguments"
 333         depends on SPARC64
 334
 335 config CMDLINE
 336         string "Initial kernel command string"
 337         depends on CMDLINE_BOOL
 338         default "console=ttyS0,9600 root=/dev/sda1"
 339         help
 340           Say Y here if you want to be able to pass default arguments to
 341           the kernel. This will be overridden by the bootloader, if you
 342           use one (such as SILO). This is most useful if you want to boot
 343           a kernel from TFTP, and want default options to be available
 344           with having them passed on the command line.
 345
 346           NOTE: This option WILL override the PROM bootargs setting!
 347
 348 config SUN_PM
 349         bool
 350         default y if SPARC32
 351         help
 352           Enable power management and CPU standby features on supported
 353           SPARC platforms.
 354
 355 config SPARC_LED
 356         tristate "Sun4m LED driver"
 357         depends on SPARC32
 358         help
 359           This driver toggles the front-panel LED on sun4m systems
 360           in a user-specifiable manner.  Its state can be probed
 361           by reading /proc/led and its blinking mode can be changed
 362           via writes to /proc/led
 363
 364 config SERIAL_CONSOLE
 365         bool
 366         depends on SPARC32
 367         default y
 368         ---help---
 369           If you say Y here, it will be possible to use a serial port as the
 370           system console (the system console is the device which receives all
 371           kernel messages and warnings and which allows logins in single user
 372           mode). This could be useful if some terminal or printer is connected
 373           to that serial port.
 374
 375           Even if you say Y here, the currently visible virtual console
 376           (/dev/tty0) will still be used as the system console by default, but
 377           you can alter that using a kernel command line option such as
 378           "console=ttyS1". (Try "man bootparam" or see the documentation of
 379           your boot loader (silo) about how to pass options to the kernel at
 380           boot time.)
 381
 382           If you don't have a graphics card installed and you say Y here, the
 383           kernel will automatically use the first serial line, /dev/ttyS0, as
 384           system console.
 385
 386           If unsure, say N.
 387
 388 config SPARC_LEON
 389         bool "Sparc Leon processor family"
 390         depends on SPARC32
 391         select USB_EHCI_BIG_ENDIAN_MMIO
 392         select USB_EHCI_BIG_ENDIAN_DESC
 393         ---help---
 394           If you say Y here if you are running on a SPARC-LEON processor.
 395           The LEON processor is a synthesizable VHDL model of the
 396           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 397           IP cores that are distributed under GPL. GRLIB can be downloaded
 398           from www.gaisler.com. You can download a sparc-linux cross-compilation
 399           toolchain at www.gaisler.com.
 400
 401 if SPARC_LEON
 402 menu "U-Boot options"
 403
 404 config UBOOT_LOAD_ADDR
 405         hex "uImage Load Address"
 406         default 0x40004000
 407         ---help---
 408          U-Boot kernel load address, the address in physical address space
 409          where u-boot will place the Linux kernel before booting it.
 410          This address is normally the base address of main memory + 0x4000.
 411
 412 config UBOOT_FLASH_ADDR
 413         hex "uImage.o Load Address"
 414         default 0x00080000
 415         ---help---
 416          Optional setting only affecting the uImage.o ELF-image used to
 417          download the uImage file to the target using a ELF-loader other than
 418          U-Boot. It may for example be used to download an uImage to FLASH with
 419          the GRMON utility before even starting u-boot.
 420
 421 config UBOOT_ENTRY_ADDR
 422         hex "uImage Entry Address"
 423         default 0xf0004000
 424         ---help---
 425          Do not change this unless you know what you're doing. This is
 426          hardcoded by the SPARC32 and LEON port.
 427
 428          This is the virtual address u-boot jumps to when booting the Linux
 429          Kernel.
 430
 431 endmenu
 432 endif
 433
 434 endmenu
 435
 436 menu "Bus options (PCI etc.)"
 437 config SBUS
 438         bool
 439         default y
 440
 441 config SBUSCHAR
 442         bool
 443         default y
 444
 445 config SUN_LDOMS
 446         bool "Sun Logical Domains support"
 447         depends on SPARC64
 448         help
 449           Say Y here is you want to support virtual devices via
 450           Logical Domains.
 451
 452 config PCI
 453         bool "Support for PCI and PS/2 keyboard/mouse"
 454         help
 455           Find out whether your system includes a PCI bus. PCI is the name of
 456           a bus system, i.e. the way the CPU talks to the other stuff inside
 457           your box.  If you say Y here, the kernel will include drivers and
 458           infrastructure code to support PCI bus devices.
 459
 460           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 461           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 462           All of these platforms are extremely obscure, so say N if unsure.
 463
 464 config PCI_DOMAINS
 465         def_bool PCI if SPARC64
 466
 467 config PCI_SYSCALL
 468         def_bool PCI
 469
 470 config PCIC_PCI
 471         bool
 472         depends on PCI && SPARC32 && !SPARC_LEON
 473         default y
 474
 475 config LEON_PCI
 476         bool
 477         depends on PCI && SPARC_LEON
 478         default y
 479
 480 config SPARC_GRPCI1
 481         bool "GRPCI Host Bridge Support"
 482         depends on LEON_PCI
 483         default y
 484         help
 485           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 486           PCI host controller is typically found in GRLIB SPARC32/LEON
 487           systems. The driver has one property (all_pci_errors) controlled
 488           from the bootloader that makes the GRPCI to generate interrupts
 489           on detected PCI Parity and System errors.
 490
 491 config SPARC_GRPCI2
 492         bool "GRPCI2 Host Bridge Support"
 493         depends on LEON_PCI
 494         default y
 495         help
 496           Say Y here to include the GRPCI2 Host Bridge Driver.
 497
 498 source "drivers/pci/Kconfig"
 499
 500 source "drivers/pcmcia/Kconfig"
 501
 502 config SUN_OPENPROMFS
 503         tristate "Openprom tree appears in /proc/openprom"
 504         help
 505           If you say Y, the OpenPROM device tree will be available as a
 506           virtual file system, which you can mount to /proc/openprom by "mount
 507           -t openpromfs none /proc/openprom".
 508
 509           To compile the /proc/openprom support as a module, choose M here: the
 510           module will be called openpromfs.
 511
 512           Only choose N if you know in advance that you will not need to modify
 513           OpenPROM settings on the running system.
 514
 515 # Makefile helpers
 516 config SPARC64_PCI
 517         bool
 518         default y
 519         depends on SPARC64 && PCI
 520
 521 config SPARC64_PCI_MSI
 522         bool
 523         default y
 524         depends on SPARC64_PCI && PCI_MSI
 525
 526 endmenu
 527
 528 menu "Executable file formats"
 529
 530 source "fs/Kconfig.binfmt"
 531
 532 config COMPAT
 533         bool
 534         depends on SPARC64
 535         default y
 536         select COMPAT_BINFMT_ELF
 537         select HAVE_UID16
 538         select ARCH_WANT_OLD_COMPAT_IPC
 539         select COMPAT_OLD_SIGACTION
 540
 541 config SYSVIPC_COMPAT
 542         bool
 543         depends on COMPAT && SYSVIPC
 544         default y
 545
 546 config KEYS_COMPAT
 547         def_bool y if COMPAT && KEYS
 548
 549 endmenu
 550
 551 source "net/Kconfig"
 552
 553 source "drivers/Kconfig"
 554
 555 source "drivers/sbus/char/Kconfig"
 556
 557 source "fs/Kconfig"
 558
 559 source "arch/sparc/Kconfig.debug"
 560
 561 source "security/Kconfig"
 562
 563 source "crypto/Kconfig"
 564
 565 source "lib/Kconfig"