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 GENERIC_IRQ_SHOW
  30         select ARCH_WANT_IPC_PARSE_VERSION
  31         select USE_GENERIC_SMP_HELPERS if SMP
  32         select GENERIC_PCI_IOMAP
  33         select HAVE_NMI_WATCHDOG if SPARC64
  34         select HAVE_BPF_JIT
  35         select HAVE_DEBUG_BUGVERBOSE
  36         select GENERIC_SMP_IDLE_THREAD
  37         select GENERIC_CMOS_UPDATE
  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
  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_FUNCTION_TRACE_MCOUNT_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_DEBUG_KMEMLEAK
  68         select RTC_DRV_CMOS
  69         select RTC_DRV_BQ4802
  70         select RTC_DRV_SUN4V
  71         select RTC_DRV_STARFIRE
  72         select HAVE_PERF_EVENTS
  73         select PERF_USE_VMALLOC
  74         select IRQ_PREFLOW_FASTEOI
  75         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  76         select HAVE_C_RECORDMCOUNT
  77         select NO_BOOTMEM
  78
  79 config ARCH_DEFCONFIG
  80         string
  81         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  82         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  83
  84 config IOMMU_HELPER
  85         bool
  86         default y if SPARC64
  87
  88 config STACKTRACE_SUPPORT
  89         bool
  90         default y if SPARC64
  91
  92 config LOCKDEP_SUPPORT
  93         bool
  94         default y if SPARC64
  95
  96 config HAVE_LATENCYTOP_SUPPORT
  97         bool
  98         default y if SPARC64
  99
 100 config ARCH_HIBERNATION_POSSIBLE
 101         def_bool 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 ARCH_SUPPORTS_DEBUG_PAGEALLOC
 139         def_bool y if SPARC64
 140
 141 source "init/Kconfig"
 142
 143 source "kernel/Kconfig.freezer"
 144
 145 menu "Processor type and features"
 146
 147 config SMP
 148         bool "Symmetric multi-processing support"
 149         ---help---
 150           This enables support for systems with more than one CPU. If you have
 151           a system with only one CPU, say N. If you have a system with more
 152           than one CPU, say Y.
 153
 154           If you say N here, the kernel will run on single and multiprocessor
 155           machines, but will use only one CPU of a multiprocessor machine. If
 156           you say Y here, the kernel will run on many, but not all,
 157           singleprocessor machines. On a singleprocessor machine, the kernel
 158           will run faster if you say N here.
 159
 160           People using multiprocessor machines who say Y here should also say
 161           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 162           Management" code will be disabled if you say Y here.
 163
 164           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 165           available at <http://www.tldp.org/docs.html#howto>.
 166
 167           If you don't know what to do here, say N.
 168
 169 config NR_CPUS
 170         int "Maximum number of CPUs"
 171         depends on SMP
 172         range 2 32 if SPARC32
 173         range 2 1024 if SPARC64
 174         default 32 if SPARC32
 175         default 64 if SPARC64
 176
 177 source kernel/Kconfig.hz
 178
 179 config RWSEM_GENERIC_SPINLOCK
 180         bool
 181         default y if SPARC32
 182
 183 config RWSEM_XCHGADD_ALGORITHM
 184         bool
 185         default y if SPARC64
 186
 187 config GENERIC_HWEIGHT
 188         bool
 189         default y
 190
 191 config GENERIC_CALIBRATE_DELAY
 192         bool
 193         default y
 194
 195 config ARCH_MAY_HAVE_PC_FDC
 196         bool
 197         default y
 198
 199 config EMULATED_CMPXCHG
 200         bool
 201         default y if SPARC32
 202         help
 203           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 204           is emulated, and therefore it is not completely atomic.
 205
 206 # Makefile helpers
 207 config SPARC32_SMP
 208         bool
 209         default y
 210         depends on SPARC32 && SMP
 211
 212 config SPARC64_SMP
 213         bool
 214         default y
 215         depends on SPARC64 && SMP
 216
 217 config EARLYFB
 218         bool "Support for early boot text console"
 219         default y
 220         depends on SPARC64
 221         help
 222           Say Y here to enable a faster early framebuffer boot console.
 223
 224 config SECCOMP
 225         bool "Enable seccomp to safely compute untrusted bytecode"
 226         depends on SPARC64 && PROC_FS
 227         default y
 228         help
 229           This kernel feature is useful for number crunching applications
 230           that may need to compute untrusted bytecode during their
 231           execution. By using pipes or other transports made available to
 232           the process as file descriptors supporting the read/write
 233           syscalls, it's possible to isolate those applications in
 234           their own address space using seccomp. Once seccomp is
 235           enabled via /proc/<pid>/seccomp, it cannot be disabled
 236           and the task is only allowed to execute a few safe syscalls
 237           defined by each seccomp mode.
 238
 239           If unsure, say Y. Only embedded should say N here.
 240
 241 config HOTPLUG_CPU
 242         bool "Support for hot-pluggable CPUs"
 243         depends on SPARC64 && SMP
 244         help
 245           Say Y here to experiment with turning CPUs off and on.  CPUs
 246           can be controlled through /sys/devices/system/cpu/cpu#.
 247           Say N if you want to disable CPU hotplug.
 248
 249 if SPARC64
 250 source "drivers/cpufreq/Kconfig"
 251 endif
 252
 253 config US3_MC
 254         tristate "UltraSPARC-III Memory Controller driver"
 255         depends on SPARC64
 256         default y
 257         help
 258           This adds a driver for the UltraSPARC-III memory controller.
 259           Loading this driver allows exact mnemonic strings to be
 260           printed in the event of a memory error, so that the faulty DIMM
 261           on the motherboard can be matched to the error.
 262
 263           If in doubt, say Y, as this information can be very useful.
 264
 265 # Global things across all Sun machines.
 266 config GENERIC_LOCKBREAK
 267         bool
 268         default y
 269         depends on SPARC64 && SMP && PREEMPT
 270
 271 config NUMA
 272         bool "NUMA support"
 273         depends on SPARC64 && SMP
 274
 275 config NODES_SHIFT
 276         int
 277         default "4"
 278         depends on NEED_MULTIPLE_NODES
 279
 280 # Some NUMA nodes have memory ranges that span
 281 # other nodes.  Even though a pfn is valid and
 282 # between a node's start and end pfns, it may not
 283 # reside on that node.  See memmap_init_zone()
 284 # for details.
 285 config NODES_SPAN_OTHER_NODES
 286         def_bool y
 287         depends on NEED_MULTIPLE_NODES
 288
 289 config ARCH_SELECT_MEMORY_MODEL
 290         def_bool y if SPARC64
 291
 292 config ARCH_SPARSEMEM_ENABLE
 293         def_bool y if SPARC64
 294         select SPARSEMEM_VMEMMAP_ENABLE
 295
 296 config ARCH_SPARSEMEM_DEFAULT
 297         def_bool y if SPARC64
 298
 299 source "mm/Kconfig"
 300
 301 if SPARC64
 302 source "kernel/power/Kconfig"
 303 endif
 304
 305 config SCHED_SMT
 306         bool "SMT (Hyperthreading) scheduler support"
 307         depends on SPARC64 && SMP
 308         default y
 309         help
 310           SMT scheduler support improves the CPU scheduler's decision making
 311           when dealing with SPARC cpus at a cost of slightly increased overhead
 312           in some places. If unsure say N here.
 313
 314 config SCHED_MC
 315         bool "Multi-core scheduler support"
 316         depends on SPARC64 && SMP
 317         default y
 318         help
 319           Multi-core scheduler support improves the CPU scheduler's decision
 320           making when dealing with multi-core CPU chips at a cost of slightly
 321           increased overhead in some places. If unsure say N here.
 322
 323 source "kernel/Kconfig.preempt"
 324
 325 config CMDLINE_BOOL
 326         bool "Default bootloader kernel arguments"
 327         depends on SPARC64
 328
 329 config CMDLINE
 330         string "Initial kernel command string"
 331         depends on CMDLINE_BOOL
 332         default "console=ttyS0,9600 root=/dev/sda1"
 333         help
 334           Say Y here if you want to be able to pass default arguments to
 335           the kernel. This will be overridden by the bootloader, if you
 336           use one (such as SILO). This is most useful if you want to boot
 337           a kernel from TFTP, and want default options to be available
 338           with having them passed on the command line.
 339
 340           NOTE: This option WILL override the PROM bootargs setting!
 341
 342 config SUN_PM
 343         bool
 344         default y if SPARC32
 345         help
 346           Enable power management and CPU standby features on supported
 347           SPARC platforms.
 348
 349 config SPARC_LED
 350         tristate "Sun4m LED driver"
 351         depends on SPARC32
 352         help
 353           This driver toggles the front-panel LED on sun4m systems
 354           in a user-specifiable manner.  Its state can be probed
 355           by reading /proc/led and its blinking mode can be changed
 356           via writes to /proc/led
 357
 358 config SERIAL_CONSOLE
 359         bool
 360         depends on SPARC32
 361         default y
 362         ---help---
 363           If you say Y here, it will be possible to use a serial port as the
 364           system console (the system console is the device which receives all
 365           kernel messages and warnings and which allows logins in single user
 366           mode). This could be useful if some terminal or printer is connected
 367           to that serial port.
 368
 369           Even if you say Y here, the currently visible virtual console
 370           (/dev/tty0) will still be used as the system console by default, but
 371           you can alter that using a kernel command line option such as
 372           "console=ttyS1". (Try "man bootparam" or see the documentation of
 373           your boot loader (silo) about how to pass options to the kernel at
 374           boot time.)
 375
 376           If you don't have a graphics card installed and you say Y here, the
 377           kernel will automatically use the first serial line, /dev/ttyS0, as
 378           system console.
 379
 380           If unsure, say N.
 381
 382 config SPARC_LEON
 383         bool "Sparc Leon processor family"
 384         depends on SPARC32
 385         select USB_EHCI_BIG_ENDIAN_MMIO
 386         select USB_EHCI_BIG_ENDIAN_DESC
 387         ---help---
 388           If you say Y here if you are running on a SPARC-LEON processor.
 389           The LEON processor is a synthesizable VHDL model of the
 390           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 391           IP cores that are distributed under GPL. GRLIB can be downloaded
 392           from www.gaisler.com. You can download a sparc-linux cross-compilation
 393           toolchain at www.gaisler.com.
 394
 395 if SPARC_LEON
 396 menu "U-Boot options"
 397
 398 config UBOOT_LOAD_ADDR
 399         hex "uImage Load Address"
 400         default 0x40004000
 401         ---help---
 402          U-Boot kernel load address, the address in physical address space
 403          where u-boot will place the Linux kernel before booting it.
 404          This address is normally the base address of main memory + 0x4000.
 405
 406 config UBOOT_FLASH_ADDR
 407         hex "uImage.o Load Address"
 408         default 0x00080000
 409         ---help---
 410          Optional setting only affecting the uImage.o ELF-image used to
 411          download the uImage file to the target using a ELF-loader other than
 412          U-Boot. It may for example be used to download an uImage to FLASH with
 413          the GRMON utility before even starting u-boot.
 414
 415 config UBOOT_ENTRY_ADDR
 416         hex "uImage Entry Address"
 417         default 0xf0004000
 418         ---help---
 419          Do not change this unless you know what you're doing. This is
 420          hardcoded by the SPARC32 and LEON port.
 421
 422          This is the virtual address u-boot jumps to when booting the Linux
 423          Kernel.
 424
 425 endmenu
 426 endif
 427
 428 endmenu
 429
 430 menu "Bus options (PCI etc.)"
 431 config SBUS
 432         bool
 433         default y
 434
 435 config SBUSCHAR
 436         bool
 437         default y
 438
 439 config SUN_LDOMS
 440         bool "Sun Logical Domains support"
 441         depends on SPARC64
 442         help
 443           Say Y here is you want to support virtual devices via
 444           Logical Domains.
 445
 446 config PCI
 447         bool "Support for PCI and PS/2 keyboard/mouse"
 448         help
 449           Find out whether your system includes a PCI bus. PCI is the name of
 450           a bus system, i.e. the way the CPU talks to the other stuff inside
 451           your box.  If you say Y here, the kernel will include drivers and
 452           infrastructure code to support PCI bus devices.
 453
 454           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 455           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 456           All of these platforms are extremely obscure, so say N if unsure.
 457
 458 config PCI_DOMAINS
 459         def_bool PCI if SPARC64
 460
 461 config PCI_SYSCALL
 462         def_bool PCI
 463
 464 config PCIC_PCI
 465         bool
 466         depends on PCI && SPARC32 && !SPARC_LEON
 467         default y
 468
 469 config LEON_PCI
 470         bool
 471         depends on PCI && SPARC_LEON
 472         default y
 473
 474 config SPARC_GRPCI1
 475         bool "GRPCI Host Bridge Support"
 476         depends on LEON_PCI
 477         default y
 478         help
 479           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 480           PCI host controller is typically found in GRLIB SPARC32/LEON
 481           systems. The driver has one property (all_pci_errors) controlled
 482           from the bootloader that makes the GRPCI to generate interrupts
 483           on detected PCI Parity and System errors.
 484
 485 config SPARC_GRPCI2
 486         bool "GRPCI2 Host Bridge Support"
 487         depends on LEON_PCI
 488         default y
 489         help
 490           Say Y here to include the GRPCI2 Host Bridge Driver.
 491
 492 source "drivers/pci/Kconfig"
 493
 494 source "drivers/pcmcia/Kconfig"
 495
 496 config SUN_OPENPROMFS
 497         tristate "Openprom tree appears in /proc/openprom"
 498         help
 499           If you say Y, the OpenPROM device tree will be available as a
 500           virtual file system, which you can mount to /proc/openprom by "mount
 501           -t openpromfs none /proc/openprom".
 502
 503           To compile the /proc/openprom support as a module, choose M here: the
 504           module will be called openpromfs.
 505
 506           Only choose N if you know in advance that you will not need to modify
 507           OpenPROM settings on the running system.
 508
 509 # Makefile helpers
 510 config SPARC64_PCI
 511         bool
 512         default y
 513         depends on SPARC64 && PCI
 514
 515 config SPARC64_PCI_MSI
 516         bool
 517         default y
 518         depends on SPARC64_PCI && PCI_MSI
 519
 520 endmenu
 521
 522 menu "Executable file formats"
 523
 524 source "fs/Kconfig.binfmt"
 525
 526 config COMPAT
 527         bool
 528         depends on SPARC64
 529         default y
 530         select COMPAT_BINFMT_ELF
 531         select HAVE_UID16
 532         select ARCH_WANT_OLD_COMPAT_IPC
 533         select COMPAT_OLD_SIGACTION
 534
 535 config SYSVIPC_COMPAT
 536         bool
 537         depends on COMPAT && SYSVIPC
 538         default y
 539
 540 config KEYS_COMPAT
 541         def_bool y if COMPAT && KEYS
 542
 543 endmenu
 544
 545 source "net/Kconfig"
 546
 547 source "drivers/Kconfig"
 548
 549 source "drivers/sbus/char/Kconfig"
 550
 551 source "fs/Kconfig"
 552
 553 source "arch/sparc/Kconfig.debug"
 554
 555 source "security/Kconfig"
 556
 557 source "crypto/Kconfig"
 558
 559 source "lib/Kconfig"