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 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_BPF_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
  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 HAVE_FUNCTION_TRACER
  56         select HAVE_FUNCTION_GRAPH_TRACER
  57         select HAVE_FUNCTION_GRAPH_FP_TEST
  58         select HAVE_KRETPROBES
  59         select HAVE_KPROBES
  60         select HAVE_RCU_TABLE_FREE if SMP
  61         select HAVE_MEMBLOCK
  62         select HAVE_MEMBLOCK_NODE_MAP
  63         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  64         select HAVE_DYNAMIC_FTRACE
  65         select HAVE_FTRACE_MCOUNT_RECORD
  66         select HAVE_SYSCALL_TRACEPOINTS
  67         select HAVE_CONTEXT_TRACKING
  68         select HAVE_DEBUG_KMEMLEAK
  69         select SPARSE_IRQ
  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         select HAVE_ARCH_AUDITSYSCALL
  81         select ARCH_SUPPORTS_ATOMIC_RMW
  82
  83 config ARCH_DEFCONFIG
  84         string
  85         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  86         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  87
  88 config ARCH_PROC_KCORE_TEXT
  89         def_bool y
  90
  91 config IOMMU_HELPER
  92         bool
  93         default y if SPARC64
  94
  95 config STACKTRACE_SUPPORT
  96         bool
  97         default y if SPARC64
  98
  99 config LOCKDEP_SUPPORT
 100         bool
 101         default y if SPARC64
 102
 103 config ARCH_HIBERNATION_POSSIBLE
 104         def_bool y if SPARC64
 105
 106 config AUDIT_ARCH
 107         bool
 108         default y
 109
 110 config HAVE_SETUP_PER_CPU_AREA
 111         def_bool y if SPARC64
 112
 113 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 114         def_bool y if SPARC64
 115
 116 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 117         def_bool y if SPARC64
 118
 119 config MMU
 120         bool
 121         default y
 122
 123 config HIGHMEM
 124         bool
 125         default y if SPARC32
 126
 127 config ZONE_DMA
 128         bool
 129         default y if SPARC32
 130
 131 config NEED_DMA_MAP_STATE
 132         def_bool y
 133
 134 config NEED_SG_DMA_LENGTH
 135         def_bool y
 136
 137 config GENERIC_ISA_DMA
 138         bool
 139         default y if SPARC32
 140
 141 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 142         def_bool y if SPARC64
 143
 144 config PGTABLE_LEVELS
 145         default 4 if 64BIT
 146         default 3
 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 uni- 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           uniprocessor machines. On a uniprocessor 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         help
 252           Say Y here to experiment with turning CPUs off and on.  CPUs
 253           can be controlled through /sys/devices/system/cpu/cpu#.
 254           Say N if you want to disable CPU hotplug.
 255
 256 if SPARC64
 257 source "drivers/cpufreq/Kconfig"
 258 endif
 259
 260 config US3_MC
 261         tristate "UltraSPARC-III Memory Controller driver"
 262         depends on SPARC64
 263         default y
 264         help
 265           This adds a driver for the UltraSPARC-III memory controller.
 266           Loading this driver allows exact mnemonic strings to be
 267           printed in the event of a memory error, so that the faulty DIMM
 268           on the motherboard can be matched to the error.
 269
 270           If in doubt, say Y, as this information can be very useful.
 271
 272 # Global things across all Sun machines.
 273 config GENERIC_LOCKBREAK
 274         bool
 275         default y
 276         depends on SPARC64 && SMP && PREEMPT
 277
 278 config NUMA
 279         bool "NUMA support"
 280         depends on SPARC64 && SMP
 281
 282 config NODES_SHIFT
 283         int
 284         default "4"
 285         depends on NEED_MULTIPLE_NODES
 286
 287 # Some NUMA nodes have memory ranges that span
 288 # other nodes.  Even though a pfn is valid and
 289 # between a node's start and end pfns, it may not
 290 # reside on that node.  See memmap_init_zone()
 291 # for details.
 292 config NODES_SPAN_OTHER_NODES
 293         def_bool y
 294         depends on NEED_MULTIPLE_NODES
 295
 296 config ARCH_SELECT_MEMORY_MODEL
 297         def_bool y if SPARC64
 298
 299 config ARCH_SPARSEMEM_ENABLE
 300         def_bool y if SPARC64
 301         select SPARSEMEM_VMEMMAP_ENABLE
 302
 303 config ARCH_SPARSEMEM_DEFAULT
 304         def_bool y if SPARC64
 305
 306 source "mm/Kconfig"
 307
 308 if SPARC64
 309 source "kernel/power/Kconfig"
 310 endif
 311
 312 config SCHED_SMT
 313         bool "SMT (Hyperthreading) scheduler support"
 314         depends on SPARC64 && SMP
 315         default y
 316         help
 317           SMT scheduler support improves the CPU scheduler's decision making
 318           when dealing with SPARC cpus at a cost of slightly increased overhead
 319           in some places. If unsure say N here.
 320
 321 config SCHED_MC
 322         bool "Multi-core scheduler support"
 323         depends on SPARC64 && SMP
 324         default y
 325         help
 326           Multi-core scheduler support improves the CPU scheduler's decision
 327           making when dealing with multi-core CPU chips at a cost of slightly
 328           increased overhead in some places. If unsure say N here.
 329
 330 source "kernel/Kconfig.preempt"
 331
 332 config CMDLINE_BOOL
 333         bool "Default bootloader kernel arguments"
 334         depends on SPARC64
 335
 336 config CMDLINE
 337         string "Initial kernel command string"
 338         depends on CMDLINE_BOOL
 339         default "console=ttyS0,9600 root=/dev/sda1"
 340         help
 341           Say Y here if you want to be able to pass default arguments to
 342           the kernel. This will be overridden by the bootloader, if you
 343           use one (such as SILO). This is most useful if you want to boot
 344           a kernel from TFTP, and want default options to be available
 345           with having them passed on the command line.
 346
 347           NOTE: This option WILL override the PROM bootargs setting!
 348
 349 config SUN_PM
 350         bool
 351         default y if SPARC32
 352         help
 353           Enable power management and CPU standby features on supported
 354           SPARC platforms.
 355
 356 config SPARC_LED
 357         tristate "Sun4m LED driver"
 358         depends on SPARC32
 359         help
 360           This driver toggles the front-panel LED on sun4m systems
 361           in a user-specifiable manner.  Its state can be probed
 362           by reading /proc/led and its blinking mode can be changed
 363           via writes to /proc/led
 364
 365 config SERIAL_CONSOLE
 366         bool
 367         depends on SPARC32
 368         default y
 369         ---help---
 370           If you say Y here, it will be possible to use a serial port as the
 371           system console (the system console is the device which receives all
 372           kernel messages and warnings and which allows logins in single user
 373           mode). This could be useful if some terminal or printer is connected
 374           to that serial port.
 375
 376           Even if you say Y here, the currently visible virtual console
 377           (/dev/tty0) will still be used as the system console by default, but
 378           you can alter that using a kernel command line option such as
 379           "console=ttyS1". (Try "man bootparam" or see the documentation of
 380           your boot loader (silo) about how to pass options to the kernel at
 381           boot time.)
 382
 383           If you don't have a graphics card installed and you say Y here, the
 384           kernel will automatically use the first serial line, /dev/ttyS0, as
 385           system console.
 386
 387           If unsure, say N.
 388
 389 config SPARC_LEON
 390         bool "Sparc Leon processor family"
 391         depends on SPARC32
 392         select USB_EHCI_BIG_ENDIAN_MMIO
 393         select USB_EHCI_BIG_ENDIAN_DESC
 394         ---help---
 395           If you say Y here if you are running on a SPARC-LEON processor.
 396           The LEON processor is a synthesizable VHDL model of the
 397           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 398           IP cores that are distributed under GPL. GRLIB can be downloaded
 399           from www.gaisler.com. You can download a sparc-linux cross-compilation
 400           toolchain at www.gaisler.com.
 401
 402 if SPARC_LEON
 403 menu "U-Boot options"
 404
 405 config UBOOT_LOAD_ADDR
 406         hex "uImage Load Address"
 407         default 0x40004000
 408         ---help---
 409          U-Boot kernel load address, the address in physical address space
 410          where u-boot will place the Linux kernel before booting it.
 411          This address is normally the base address of main memory + 0x4000.
 412
 413 config UBOOT_FLASH_ADDR
 414         hex "uImage.o Load Address"
 415         default 0x00080000
 416         ---help---
 417          Optional setting only affecting the uImage.o ELF-image used to
 418          download the uImage file to the target using a ELF-loader other than
 419          U-Boot. It may for example be used to download an uImage to FLASH with
 420          the GRMON utility before even starting u-boot.
 421
 422 config UBOOT_ENTRY_ADDR
 423         hex "uImage Entry Address"
 424         default 0xf0004000
 425         ---help---
 426          Do not change this unless you know what you're doing. This is
 427          hardcoded by the SPARC32 and LEON port.
 428
 429          This is the virtual address u-boot jumps to when booting the Linux
 430          Kernel.
 431
 432 endmenu
 433 endif
 434
 435 endmenu
 436
 437 menu "Bus options (PCI etc.)"
 438 config SBUS
 439         bool
 440         default y
 441
 442 config SBUSCHAR
 443         bool
 444         default y
 445
 446 config SUN_LDOMS
 447         bool "Sun Logical Domains support"
 448         depends on SPARC64
 449         help
 450           Say Y here is you want to support virtual devices via
 451           Logical Domains.
 452
 453 config PCI
 454         bool "Support for PCI and PS/2 keyboard/mouse"
 455         help
 456           Find out whether your system includes a PCI bus. PCI is the name of
 457           a bus system, i.e. the way the CPU talks to the other stuff inside
 458           your box.  If you say Y here, the kernel will include drivers and
 459           infrastructure code to support PCI bus devices.
 460
 461           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 462           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 463           All of these platforms are extremely obscure, so say N if unsure.
 464
 465 config PCI_DOMAINS
 466         def_bool PCI if SPARC64
 467
 468 config PCI_SYSCALL
 469         def_bool PCI
 470
 471 config PCIC_PCI
 472         bool
 473         depends on PCI && SPARC32 && !SPARC_LEON
 474         default y
 475
 476 config LEON_PCI
 477         bool
 478         depends on PCI && SPARC_LEON
 479         default y
 480
 481 config SPARC_GRPCI1
 482         bool "GRPCI Host Bridge Support"
 483         depends on LEON_PCI
 484         default y
 485         help
 486           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 487           PCI host controller is typically found in GRLIB SPARC32/LEON
 488           systems. The driver has one property (all_pci_errors) controlled
 489           from the bootloader that makes the GRPCI to generate interrupts
 490           on detected PCI Parity and System errors.
 491
 492 config SPARC_GRPCI2
 493         bool "GRPCI2 Host Bridge Support"
 494         depends on LEON_PCI
 495         default y
 496         help
 497           Say Y here to include the GRPCI2 Host Bridge Driver.
 498
 499 source "drivers/pci/Kconfig"
 500
 501 source "drivers/pcmcia/Kconfig"
 502
 503 config SUN_OPENPROMFS
 504         tristate "Openprom tree appears in /proc/openprom"
 505         help
 506           If you say Y, the OpenPROM device tree will be available as a
 507           virtual file system, which you can mount to /proc/openprom by "mount
 508           -t openpromfs none /proc/openprom".
 509
 510           To compile the /proc/openprom support as a module, choose M here: the
 511           module will be called openpromfs.
 512
 513           Only choose N if you know in advance that you will not need to modify
 514           OpenPROM settings on the running system.
 515
 516 # Makefile helpers
 517 config SPARC64_PCI
 518         bool
 519         default y
 520         depends on SPARC64 && PCI
 521
 522 config SPARC64_PCI_MSI
 523         bool
 524         default y
 525         depends on SPARC64_PCI && PCI_MSI
 526
 527 endmenu
 528
 529 menu "Executable file formats"
 530
 531 source "fs/Kconfig.binfmt"
 532
 533 config COMPAT
 534         bool
 535         depends on SPARC64
 536         default y
 537         select COMPAT_BINFMT_ELF
 538         select HAVE_UID16
 539         select ARCH_WANT_OLD_COMPAT_IPC
 540         select COMPAT_OLD_SIGACTION
 541
 542 config SYSVIPC_COMPAT
 543         bool
 544         depends on COMPAT && SYSVIPC
 545         default y
 546
 547 config KEYS_COMPAT
 548         def_bool y if COMPAT && KEYS
 549
 550 endmenu
 551
 552 source "net/Kconfig"
 553
 554 source "drivers/Kconfig"
 555
 556 source "drivers/sbus/char/Kconfig"
 557
 558 source "fs/Kconfig"
 559
 560 source "arch/sparc/Kconfig.debug"
 561
 562 source "security/Kconfig"
 563
 564 source "crypto/Kconfig"
 565
 566 source "lib/Kconfig"