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_SYSCALL_WRAPPERS
  66         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  67         select HAVE_DYNAMIC_FTRACE
  68         select HAVE_FTRACE_MCOUNT_RECORD
  69         select HAVE_SYSCALL_TRACEPOINTS
  70         select HAVE_DEBUG_KMEMLEAK
  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
  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 IOMMU_HELPER
  88         bool
  89         default y if SPARC64
  90
  91 config STACKTRACE_SUPPORT
  92         bool
  93         default y if SPARC64
  94
  95 config LOCKDEP_SUPPORT
  96         bool
  97         default y if SPARC64
  98
  99 config HAVE_LATENCYTOP_SUPPORT
 100         bool
 101         default y if SPARC64
 102
 103 config AUDIT_ARCH
 104         bool
 105         default y
 106
 107 config HAVE_SETUP_PER_CPU_AREA
 108         def_bool y if SPARC64
 109
 110 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 111         def_bool y if SPARC64
 112
 113 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 114         def_bool y if SPARC64
 115
 116 config MMU
 117         bool
 118         default y
 119
 120 config HIGHMEM
 121         bool
 122         default y if SPARC32
 123
 124 config ZONE_DMA
 125         bool
 126         default y if SPARC32
 127
 128 config NEED_DMA_MAP_STATE
 129         def_bool y
 130
 131 config NEED_SG_DMA_LENGTH
 132         def_bool y
 133
 134 config GENERIC_ISA_DMA
 135         bool
 136         default y if SPARC32
 137
 138 config GENERIC_GPIO
 139         bool
 140         help
 141           Generic GPIO API support
 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 single 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           singleprocessor machines. On a singleprocessor 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         select HOTPLUG
 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 config SCHED_SMT
 308         bool "SMT (Hyperthreading) scheduler support"
 309         depends on SPARC64 && SMP
 310         default y
 311         help
 312           SMT scheduler support improves the CPU scheduler's decision making
 313           when dealing with SPARC cpus at a cost of slightly increased overhead
 314           in some places. If unsure say N here.
 315
 316 config SCHED_MC
 317         bool "Multi-core scheduler support"
 318         depends on SPARC64 && SMP
 319         default y
 320         help
 321           Multi-core scheduler support improves the CPU scheduler's decision
 322           making when dealing with multi-core CPU chips at a cost of slightly
 323           increased overhead in some places. If unsure say N here.
 324
 325 source "kernel/Kconfig.preempt"
 326
 327 config CMDLINE_BOOL
 328         bool "Default bootloader kernel arguments"
 329         depends on SPARC64
 330
 331 config CMDLINE
 332         string "Initial kernel command string"
 333         depends on CMDLINE_BOOL
 334         default "console=ttyS0,9600 root=/dev/sda1"
 335         help
 336           Say Y here if you want to be able to pass default arguments to
 337           the kernel. This will be overridden by the bootloader, if you
 338           use one (such as SILO). This is most useful if you want to boot
 339           a kernel from TFTP, and want default options to be available
 340           with having them passed on the command line.
 341
 342           NOTE: This option WILL override the PROM bootargs setting!
 343
 344 config SUN_PM
 345         bool
 346         default y if SPARC32
 347         help
 348           Enable power management and CPU standby features on supported
 349           SPARC platforms.
 350
 351 config SPARC_LED
 352         tristate "Sun4m LED driver"
 353         depends on SPARC32
 354         help
 355           This driver toggles the front-panel LED on sun4m systems
 356           in a user-specifiable manner.  Its state can be probed
 357           by reading /proc/led and its blinking mode can be changed
 358           via writes to /proc/led
 359
 360 config SERIAL_CONSOLE
 361         bool
 362         depends on SPARC32
 363         default y
 364         ---help---
 365           If you say Y here, it will be possible to use a serial port as the
 366           system console (the system console is the device which receives all
 367           kernel messages and warnings and which allows logins in single user
 368           mode). This could be useful if some terminal or printer is connected
 369           to that serial port.
 370
 371           Even if you say Y here, the currently visible virtual console
 372           (/dev/tty0) will still be used as the system console by default, but
 373           you can alter that using a kernel command line option such as
 374           "console=ttyS1". (Try "man bootparam" or see the documentation of
 375           your boot loader (silo) about how to pass options to the kernel at
 376           boot time.)
 377
 378           If you don't have a graphics card installed and you say Y here, the
 379           kernel will automatically use the first serial line, /dev/ttyS0, as
 380           system console.
 381
 382           If unsure, say N.
 383
 384 config SPARC_LEON
 385         bool "Sparc Leon processor family"
 386         depends on SPARC32
 387         select USB_EHCI_BIG_ENDIAN_MMIO
 388         select USB_EHCI_BIG_ENDIAN_DESC
 389         ---help---
 390           If you say Y here if you are running on a SPARC-LEON processor.
 391           The LEON processor is a synthesizable VHDL model of the
 392           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 393           IP cores that are distributed under GPL. GRLIB can be downloaded
 394           from www.gaisler.com. You can download a sparc-linux cross-compilation
 395           toolchain at www.gaisler.com.
 396
 397 if SPARC_LEON
 398 menu "U-Boot options"
 399
 400 config UBOOT_LOAD_ADDR
 401         hex "uImage Load Address"
 402         default 0x40004000
 403         ---help---
 404          U-Boot kernel load address, the address in physical address space
 405          where u-boot will place the Linux kernel before booting it.
 406          This address is normally the base address of main memory + 0x4000.
 407
 408 config UBOOT_FLASH_ADDR
 409         hex "uImage.o Load Address"
 410         default 0x00080000
 411         ---help---
 412          Optional setting only affecting the uImage.o ELF-image used to
 413          download the uImage file to the target using a ELF-loader other than
 414          U-Boot. It may for example be used to download an uImage to FLASH with
 415          the GRMON utility before even starting u-boot.
 416
 417 config UBOOT_ENTRY_ADDR
 418         hex "uImage Entry Address"
 419         default 0xf0004000
 420         ---help---
 421          Do not change this unless you know what you're doing. This is
 422          hardcoded by the SPARC32 and LEON port.
 423
 424          This is the virtual address u-boot jumps to when booting the Linux
 425          Kernel.
 426
 427 endmenu
 428 endif
 429
 430 endmenu
 431
 432 menu "Bus options (PCI etc.)"
 433 config SBUS
 434         bool
 435         default y
 436
 437 config SBUSCHAR
 438         bool
 439         default y
 440
 441 config SUN_LDOMS
 442         bool "Sun Logical Domains support"
 443         depends on SPARC64
 444         help
 445           Say Y here is you want to support virtual devices via
 446           Logical Domains.
 447
 448 config PCI
 449         bool "Support for PCI and PS/2 keyboard/mouse"
 450         help
 451           Find out whether your system includes a PCI bus. PCI is the name of
 452           a bus system, i.e. the way the CPU talks to the other stuff inside
 453           your box.  If you say Y here, the kernel will include drivers and
 454           infrastructure code to support PCI bus devices.
 455
 456           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 457           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 458           All of these platforms are extremely obscure, so say N if unsure.
 459
 460 config PCI_DOMAINS
 461         def_bool PCI if SPARC64
 462
 463 config PCI_SYSCALL
 464         def_bool PCI
 465
 466 config PCIC_PCI
 467         bool
 468         depends on PCI && SPARC32 && !SPARC_LEON
 469         default y
 470
 471 config LEON_PCI
 472         bool
 473         depends on PCI && SPARC_LEON
 474         default y
 475
 476 config GRPCI2
 477         bool "GRPCI2 Host Bridge Support"
 478         depends on LEON_PCI
 479         default y
 480         help
 481           Say Y here to include the GRPCI2 Host Bridge Driver.
 482
 483 source "drivers/pci/Kconfig"
 484
 485 source "drivers/pcmcia/Kconfig"
 486
 487 config SUN_OPENPROMFS
 488         tristate "Openprom tree appears in /proc/openprom"
 489         help
 490           If you say Y, the OpenPROM device tree will be available as a
 491           virtual file system, which you can mount to /proc/openprom by "mount
 492           -t openpromfs none /proc/openprom".
 493
 494           To compile the /proc/openprom support as a module, choose M here: the
 495           module will be called openpromfs.
 496
 497           Only choose N if you know in advance that you will not need to modify
 498           OpenPROM settings on the running system.
 499
 500 # Makefile helper
 501 config SPARC64_PCI
 502         bool
 503         default y
 504         depends on SPARC64 && PCI
 505
 506 endmenu
 507
 508 menu "Executable file formats"
 509
 510 source "fs/Kconfig.binfmt"
 511
 512 config COMPAT
 513         bool
 514         depends on SPARC64
 515         default y
 516         select COMPAT_BINFMT_ELF
 517         select HAVE_UID16
 518         select ARCH_WANT_OLD_COMPAT_IPC
 519         select COMPAT_OLD_SIGACTION
 520
 521 config SYSVIPC_COMPAT
 522         bool
 523         depends on COMPAT && SYSVIPC
 524         default y
 525
 526 config KEYS_COMPAT
 527         def_bool y if COMPAT && KEYS
 528
 529 endmenu
 530
 531 source "net/Kconfig"
 532
 533 source "drivers/Kconfig"
 534
 535 source "drivers/sbus/char/Kconfig"
 536
 537 source "fs/Kconfig"
 538
 539 source "arch/sparc/Kconfig.debug"
 540
 541 source "security/Kconfig"
 542
 543 source "crypto/Kconfig"
 544
 545 source "lib/Kconfig"