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_IDLE_LOOP
  41         select GENERIC_STRNCPY_FROM_USER
  42         select GENERIC_STRNLEN_USER
  43         select MODULES_USE_ELF_RELA
  44         select ODD_RT_SIGACTION
  45         select OLD_SIGSUSPEND
  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 ARCH_SUPPORTS_MSI
  57         select HAVE_FUNCTION_TRACER
  58         select HAVE_FUNCTION_GRAPH_TRACER
  59         select HAVE_FUNCTION_GRAPH_FP_TEST
  60         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  61         select HAVE_KRETPROBES
  62         select HAVE_KPROBES
  63         select HAVE_RCU_TABLE_FREE if SMP
  64         select HAVE_MEMBLOCK
  65         select HAVE_MEMBLOCK_NODE_MAP
  66         select HAVE_SYSCALL_WRAPPERS
  67         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  68         select HAVE_DYNAMIC_FTRACE
  69         select HAVE_FTRACE_MCOUNT_RECORD
  70         select HAVE_SYSCALL_TRACEPOINTS
  71         select HAVE_DEBUG_KMEMLEAK
  72         select RTC_DRV_CMOS
  73         select RTC_DRV_BQ4802
  74         select RTC_DRV_SUN4V
  75         select RTC_DRV_STARFIRE
  76         select HAVE_PERF_EVENTS
  77         select PERF_USE_VMALLOC
  78         select IRQ_PREFLOW_FASTEOI
  79         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  80         select HAVE_C_RECORDMCOUNT
  81         select NO_BOOTMEM
  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 IOMMU_HELPER
  89         bool
  90         default y if SPARC64
  91
  92 config STACKTRACE_SUPPORT
  93         bool
  94         default y if SPARC64
  95
  96 config LOCKDEP_SUPPORT
  97         bool
  98         default y if SPARC64
  99
 100 config HAVE_LATENCYTOP_SUPPORT
 101         bool
 102         default y if SPARC64
 103
 104 config AUDIT_ARCH
 105         bool
 106         default y
 107
 108 config HAVE_SETUP_PER_CPU_AREA
 109         def_bool y if SPARC64
 110
 111 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 112         def_bool y if SPARC64
 113
 114 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 115         def_bool y if SPARC64
 116
 117 config MMU
 118         bool
 119         default y
 120
 121 config HIGHMEM
 122         bool
 123         default y if SPARC32
 124
 125 config ZONE_DMA
 126         bool
 127         default y if SPARC32
 128
 129 config NEED_DMA_MAP_STATE
 130         def_bool y
 131
 132 config NEED_SG_DMA_LENGTH
 133         def_bool y
 134
 135 config GENERIC_ISA_DMA
 136         bool
 137         default y if SPARC32
 138
 139 config GENERIC_GPIO
 140         bool
 141         help
 142           Generic GPIO API support
 143
 144 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 145         def_bool y if SPARC64
 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 single 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           singleprocessor machines. On a singleprocessor 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         select HOTPLUG
 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
 259 config US3_FREQ
 260         tristate "UltraSPARC-III CPU Frequency driver"
 261         depends on CPU_FREQ
 262         select CPU_FREQ_TABLE
 263         help
 264           This adds the CPUFreq driver for UltraSPARC-III processors.
 265
 266           For details, take a look at <file:Documentation/cpu-freq>.
 267
 268           If in doubt, say N.
 269
 270 config US2E_FREQ
 271         tristate "UltraSPARC-IIe CPU Frequency driver"
 272         depends on CPU_FREQ
 273         select CPU_FREQ_TABLE
 274         help
 275           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 276
 277           For details, take a look at <file:Documentation/cpu-freq>.
 278
 279           If in doubt, say N.
 280
 281 endif
 282
 283 config US3_MC
 284         tristate "UltraSPARC-III Memory Controller driver"
 285         depends on SPARC64
 286         default y
 287         help
 288           This adds a driver for the UltraSPARC-III memory controller.
 289           Loading this driver allows exact mnemonic strings to be
 290           printed in the event of a memory error, so that the faulty DIMM
 291           on the motherboard can be matched to the error.
 292
 293           If in doubt, say Y, as this information can be very useful.
 294
 295 # Global things across all Sun machines.
 296 config GENERIC_LOCKBREAK
 297         bool
 298         default y
 299         depends on SPARC64 && SMP && PREEMPT
 300
 301 config NUMA
 302         bool "NUMA support"
 303         depends on SPARC64 && SMP
 304
 305 config NODES_SHIFT
 306         int
 307         default "4"
 308         depends on NEED_MULTIPLE_NODES
 309
 310 # Some NUMA nodes have memory ranges that span
 311 # other nodes.  Even though a pfn is valid and
 312 # between a node's start and end pfns, it may not
 313 # reside on that node.  See memmap_init_zone()
 314 # for details.
 315 config NODES_SPAN_OTHER_NODES
 316         def_bool y
 317         depends on NEED_MULTIPLE_NODES
 318
 319 config ARCH_SELECT_MEMORY_MODEL
 320         def_bool y if SPARC64
 321
 322 config ARCH_SPARSEMEM_ENABLE
 323         def_bool y if SPARC64
 324         select SPARSEMEM_VMEMMAP_ENABLE
 325
 326 config ARCH_SPARSEMEM_DEFAULT
 327         def_bool y if SPARC64
 328
 329 source "mm/Kconfig"
 330
 331 config SCHED_SMT
 332         bool "SMT (Hyperthreading) scheduler support"
 333         depends on SPARC64 && SMP
 334         default y
 335         help
 336           SMT scheduler support improves the CPU scheduler's decision making
 337           when dealing with SPARC cpus at a cost of slightly increased overhead
 338           in some places. If unsure say N here.
 339
 340 config SCHED_MC
 341         bool "Multi-core scheduler support"
 342         depends on SPARC64 && SMP
 343         default y
 344         help
 345           Multi-core scheduler support improves the CPU scheduler's decision
 346           making when dealing with multi-core CPU chips at a cost of slightly
 347           increased overhead in some places. If unsure say N here.
 348
 349 source "kernel/Kconfig.preempt"
 350
 351 config CMDLINE_BOOL
 352         bool "Default bootloader kernel arguments"
 353         depends on SPARC64
 354
 355 config CMDLINE
 356         string "Initial kernel command string"
 357         depends on CMDLINE_BOOL
 358         default "console=ttyS0,9600 root=/dev/sda1"
 359         help
 360           Say Y here if you want to be able to pass default arguments to
 361           the kernel. This will be overridden by the bootloader, if you
 362           use one (such as SILO). This is most useful if you want to boot
 363           a kernel from TFTP, and want default options to be available
 364           with having them passed on the command line.
 365
 366           NOTE: This option WILL override the PROM bootargs setting!
 367
 368 config SUN_PM
 369         bool
 370         default y if SPARC32
 371         help
 372           Enable power management and CPU standby features on supported
 373           SPARC platforms.
 374
 375 config SPARC_LED
 376         tristate "Sun4m LED driver"
 377         depends on SPARC32
 378         help
 379           This driver toggles the front-panel LED on sun4m systems
 380           in a user-specifiable manner.  Its state can be probed
 381           by reading /proc/led and its blinking mode can be changed
 382           via writes to /proc/led
 383
 384 config SERIAL_CONSOLE
 385         bool
 386         depends on SPARC32
 387         default y
 388         ---help---
 389           If you say Y here, it will be possible to use a serial port as the
 390           system console (the system console is the device which receives all
 391           kernel messages and warnings and which allows logins in single user
 392           mode). This could be useful if some terminal or printer is connected
 393           to that serial port.
 394
 395           Even if you say Y here, the currently visible virtual console
 396           (/dev/tty0) will still be used as the system console by default, but
 397           you can alter that using a kernel command line option such as
 398           "console=ttyS1". (Try "man bootparam" or see the documentation of
 399           your boot loader (silo) about how to pass options to the kernel at
 400           boot time.)
 401
 402           If you don't have a graphics card installed and you say Y here, the
 403           kernel will automatically use the first serial line, /dev/ttyS0, as
 404           system console.
 405
 406           If unsure, say N.
 407
 408 config SPARC_LEON
 409         bool "Sparc Leon processor family"
 410         depends on SPARC32
 411         ---help---
 412           If you say Y here if you are running on a SPARC-LEON processor.
 413           The LEON processor is a synthesizable VHDL model of the
 414           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 415           IP cores that are distributed under GPL. GRLIB can be downloaded
 416           from www.gaisler.com. You can download a sparc-linux cross-compilation
 417           toolchain at www.gaisler.com.
 418
 419 if SPARC_LEON
 420 menu "U-Boot options"
 421
 422 config UBOOT_LOAD_ADDR
 423         hex "uImage Load Address"
 424         default 0x40004000
 425         ---help---
 426          U-Boot kernel load address, the address in physical address space
 427          where u-boot will place the Linux kernel before booting it.
 428          This address is normally the base address of main memory + 0x4000.
 429
 430 config UBOOT_FLASH_ADDR
 431         hex "uImage.o Load Address"
 432         default 0x00080000
 433         ---help---
 434          Optional setting only affecting the uImage.o ELF-image used to
 435          download the uImage file to the target using a ELF-loader other than
 436          U-Boot. It may for example be used to download an uImage to FLASH with
 437          the GRMON utility before even starting u-boot.
 438
 439 config UBOOT_ENTRY_ADDR
 440         hex "uImage Entry Address"
 441         default 0xf0004000
 442         ---help---
 443          Do not change this unless you know what you're doing. This is
 444          hardcoded by the SPARC32 and LEON port.
 445
 446          This is the virtual address u-boot jumps to when booting the Linux
 447          Kernel.
 448
 449 endmenu
 450 endif
 451
 452 endmenu
 453
 454 menu "Bus options (PCI etc.)"
 455 config SBUS
 456         bool
 457         default y
 458
 459 config SBUSCHAR
 460         bool
 461         default y
 462
 463 config SUN_LDOMS
 464         bool "Sun Logical Domains support"
 465         depends on SPARC64
 466         help
 467           Say Y here is you want to support virtual devices via
 468           Logical Domains.
 469
 470 config PCI
 471         bool "Support for PCI and PS/2 keyboard/mouse"
 472         help
 473           Find out whether your system includes a PCI bus. PCI is the name of
 474           a bus system, i.e. the way the CPU talks to the other stuff inside
 475           your box.  If you say Y here, the kernel will include drivers and
 476           infrastructure code to support PCI bus devices.
 477
 478           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 479           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 480           All of these platforms are extremely obscure, so say N if unsure.
 481
 482 config PCI_DOMAINS
 483         def_bool PCI if SPARC64
 484
 485 config PCI_SYSCALL
 486         def_bool PCI
 487
 488 config PCIC_PCI
 489         bool
 490         depends on PCI && SPARC32 && !SPARC_LEON
 491         default y
 492
 493 config LEON_PCI
 494         bool
 495         depends on PCI && SPARC_LEON
 496         default y
 497
 498 config GRPCI2
 499         bool "GRPCI2 Host Bridge Support"
 500         depends on LEON_PCI
 501         default y
 502         help
 503           Say Y here to include the GRPCI2 Host Bridge Driver.
 504
 505 source "drivers/pci/Kconfig"
 506
 507 source "drivers/pcmcia/Kconfig"
 508
 509 config SUN_OPENPROMFS
 510         tristate "Openprom tree appears in /proc/openprom"
 511         help
 512           If you say Y, the OpenPROM device tree will be available as a
 513           virtual file system, which you can mount to /proc/openprom by "mount
 514           -t openpromfs none /proc/openprom".
 515
 516           To compile the /proc/openprom support as a module, choose M here: the
 517           module will be called openpromfs.
 518
 519           Only choose N if you know in advance that you will not need to modify
 520           OpenPROM settings on the running system.
 521
 522 # Makefile helper
 523 config SPARC64_PCI
 524         bool
 525         default y
 526         depends on SPARC64 && PCI
 527
 528 endmenu
 529
 530 menu "Executable file formats"
 531
 532 source "fs/Kconfig.binfmt"
 533
 534 config COMPAT
 535         bool
 536         depends on SPARC64
 537         default y
 538         select COMPAT_BINFMT_ELF
 539         select HAVE_UID16
 540         select ARCH_WANT_OLD_COMPAT_IPC
 541         select COMPAT_OLD_SIGACTION
 542
 543 config SYSVIPC_COMPAT
 544         bool
 545         depends on COMPAT && SYSVIPC
 546         default y
 547
 548 config KEYS_COMPAT
 549         def_bool y if COMPAT && KEYS
 550
 551 endmenu
 552
 553 source "net/Kconfig"
 554
 555 source "drivers/Kconfig"
 556
 557 source "drivers/sbus/char/Kconfig"
 558
 559 source "fs/Kconfig"
 560
 561 source "arch/sparc/Kconfig.debug"
 562
 563 source "security/Kconfig"
 564
 565 source "crypto/Kconfig"
 566
 567 source "lib/Kconfig"