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_IRQ_WORK
  27         select HAVE_DMA_ATTRS
  28         select HAVE_DMA_API_DEBUG
  29         select HAVE_ARCH_JUMP_LABEL
  30         select HAVE_GENERIC_HARDIRQS
  31         select GENERIC_IRQ_SHOW
  32         select ARCH_WANT_IPC_PARSE_VERSION
  33         select USE_GENERIC_SMP_HELPERS if SMP
  34         select GENERIC_PCI_IOMAP
  35         select HAVE_NMI_WATCHDOG if SPARC64
  36         select HAVE_BPF_JIT
  37         select HAVE_DEBUG_BUGVERBOSE
  38         select GENERIC_SMP_IDLE_THREAD
  39         select GENERIC_CMOS_UPDATE
  40         select GENERIC_CLOCKEVENTS
  41         select GENERIC_STRNCPY_FROM_USER
  42         select GENERIC_STRNLEN_USER
  43         select MODULES_USE_ELF_RELA
  44         select GENERIC_KERNEL_THREAD
  45         select GENERIC_KERNEL_EXECVE
  46
  47 config SPARC32
  48         def_bool !64BIT
  49         select GENERIC_ATOMIC64
  50         select CLZ_TAB
  51         select HAVE_UID16
  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_DYNAMIC_FTRACE
  67         select HAVE_FTRACE_MCOUNT_RECORD
  68         select HAVE_SYSCALL_TRACEPOINTS
  69         select HAVE_DEBUG_KMEMLEAK
  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
  81 config ARCH_DEFCONFIG
  82         string
  83         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  84         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  85
  86 # CONFIG_BITS can be used at source level to get 32/64 bits
  87 config BITS
  88         int
  89         default 32 if SPARC32
  90         default 64 if SPARC64
  91
  92 config IOMMU_HELPER
  93         bool
  94         default y if SPARC64
  95
  96 config STACKTRACE_SUPPORT
  97         bool
  98         default y if SPARC64
  99
 100 config LOCKDEP_SUPPORT
 101         bool
 102         default y if SPARC64
 103
 104 config HAVE_LATENCYTOP_SUPPORT
 105         bool
 106         default y if SPARC64
 107
 108 config AUDIT_ARCH
 109         bool
 110         default y
 111
 112 config HAVE_SETUP_PER_CPU_AREA
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 119         def_bool y if SPARC64
 120
 121 config MMU
 122         bool
 123         default y
 124
 125 config HIGHMEM
 126         bool
 127         default y if SPARC32
 128
 129 config ZONE_DMA
 130         bool
 131         default y if SPARC32
 132
 133 config NEED_DMA_MAP_STATE
 134         def_bool y
 135
 136 config NEED_SG_DMA_LENGTH
 137         def_bool y
 138
 139 config GENERIC_ISA_DMA
 140         bool
 141         default y if SPARC32
 142
 143 config GENERIC_GPIO
 144         bool
 145         help
 146           Generic GPIO API support
 147
 148 config ARCH_NO_VIRT_TO_BUS
 149         def_bool y
 150
 151 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 152         def_bool y if SPARC64
 153
 154 source "init/Kconfig"
 155
 156 source "kernel/Kconfig.freezer"
 157
 158 menu "Processor type and features"
 159
 160 config SMP
 161         bool "Symmetric multi-processing support"
 162         ---help---
 163           This enables support for systems with more than one CPU. If you have
 164           a system with only one CPU, say N. If you have a system with more
 165           than one CPU, say Y.
 166
 167           If you say N here, the kernel will run on single and multiprocessor
 168           machines, but will use only one CPU of a multiprocessor machine. If
 169           you say Y here, the kernel will run on many, but not all,
 170           singleprocessor machines. On a singleprocessor machine, the kernel
 171           will run faster if you say N here.
 172
 173           People using multiprocessor machines who say Y here should also say
 174           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 175           Management" code will be disabled if you say Y here.
 176
 177           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 178           available at <http://www.tldp.org/docs.html#howto>.
 179
 180           If you don't know what to do here, say N.
 181
 182 config NR_CPUS
 183         int "Maximum number of CPUs"
 184         depends on SMP
 185         range 2 32 if SPARC32
 186         range 2 1024 if SPARC64
 187         default 32 if SPARC32
 188         default 64 if SPARC64
 189
 190 source kernel/Kconfig.hz
 191
 192 config RWSEM_GENERIC_SPINLOCK
 193         bool
 194         default y if SPARC32
 195
 196 config RWSEM_XCHGADD_ALGORITHM
 197         bool
 198         default y if SPARC64
 199
 200 config GENERIC_HWEIGHT
 201         bool
 202         default y if !ULTRA_HAS_POPULATION_COUNT
 203
 204 config GENERIC_CALIBRATE_DELAY
 205         bool
 206         default y
 207
 208 config ARCH_MAY_HAVE_PC_FDC
 209         bool
 210         default y
 211
 212 config EMULATED_CMPXCHG
 213         bool
 214         default y if SPARC32
 215         help
 216           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 217           is emulated, and therefore it is not completely atomic.
 218
 219 # Makefile helpers
 220 config SPARC32_SMP
 221         bool
 222         default y
 223         depends on SPARC32 && SMP
 224
 225 config SPARC64_SMP
 226         bool
 227         default y
 228         depends on SPARC64 && SMP
 229
 230 config EARLYFB
 231         bool "Support for early boot text console"
 232         default y
 233         depends on SPARC64
 234         help
 235           Say Y here to enable a faster early framebuffer boot console.
 236
 237 config SECCOMP
 238         bool "Enable seccomp to safely compute untrusted bytecode"
 239         depends on SPARC64 && PROC_FS
 240         default y
 241         help
 242           This kernel feature is useful for number crunching applications
 243           that may need to compute untrusted bytecode during their
 244           execution. By using pipes or other transports made available to
 245           the process as file descriptors supporting the read/write
 246           syscalls, it's possible to isolate those applications in
 247           their own address space using seccomp. Once seccomp is
 248           enabled via /proc/<pid>/seccomp, it cannot be disabled
 249           and the task is only allowed to execute a few safe syscalls
 250           defined by each seccomp mode.
 251
 252           If unsure, say Y. Only embedded should say N here.
 253
 254 config HOTPLUG_CPU
 255         bool "Support for hot-pluggable CPUs"
 256         depends on SPARC64 && SMP
 257         select HOTPLUG
 258         help
 259           Say Y here to experiment with turning CPUs off and on.  CPUs
 260           can be controlled through /sys/devices/system/cpu/cpu#.
 261           Say N if you want to disable CPU hotplug.
 262
 263 if SPARC64
 264 source "drivers/cpufreq/Kconfig"
 265
 266 config US3_FREQ
 267         tristate "UltraSPARC-III CPU Frequency driver"
 268         depends on CPU_FREQ
 269         select CPU_FREQ_TABLE
 270         help
 271           This adds the CPUFreq driver for UltraSPARC-III processors.
 272
 273           For details, take a look at <file:Documentation/cpu-freq>.
 274
 275           If in doubt, say N.
 276
 277 config US2E_FREQ
 278         tristate "UltraSPARC-IIe CPU Frequency driver"
 279         depends on CPU_FREQ
 280         select CPU_FREQ_TABLE
 281         help
 282           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 283
 284           For details, take a look at <file:Documentation/cpu-freq>.
 285
 286           If in doubt, say N.
 287
 288 endif
 289
 290 config US3_MC
 291         tristate "UltraSPARC-III Memory Controller driver"
 292         depends on SPARC64
 293         default y
 294         help
 295           This adds a driver for the UltraSPARC-III memory controller.
 296           Loading this driver allows exact mnemonic strings to be
 297           printed in the event of a memory error, so that the faulty DIMM
 298           on the motherboard can be matched to the error.
 299
 300           If in doubt, say Y, as this information can be very useful.
 301
 302 # Global things across all Sun machines.
 303 config GENERIC_LOCKBREAK
 304         bool
 305         default y
 306         depends on SPARC64 && SMP && PREEMPT
 307
 308 config NUMA
 309         bool "NUMA support"
 310         depends on SPARC64 && SMP
 311
 312 config NODES_SHIFT
 313         int
 314         default "4"
 315         depends on NEED_MULTIPLE_NODES
 316
 317 # Some NUMA nodes have memory ranges that span
 318 # other nodes.  Even though a pfn is valid and
 319 # between a node's start and end pfns, it may not
 320 # reside on that node.  See memmap_init_zone()
 321 # for details.
 322 config NODES_SPAN_OTHER_NODES
 323         def_bool y
 324         depends on NEED_MULTIPLE_NODES
 325
 326 config ARCH_SELECT_MEMORY_MODEL
 327         def_bool y if SPARC64
 328
 329 config ARCH_SPARSEMEM_ENABLE
 330         def_bool y if SPARC64
 331         select SPARSEMEM_VMEMMAP_ENABLE
 332
 333 config ARCH_SPARSEMEM_DEFAULT
 334         def_bool y if SPARC64
 335
 336 source "mm/Kconfig"
 337
 338 config SCHED_SMT
 339         bool "SMT (Hyperthreading) scheduler support"
 340         depends on SPARC64 && SMP
 341         default y
 342         help
 343           SMT scheduler support improves the CPU scheduler's decision making
 344           when dealing with SPARC cpus at a cost of slightly increased overhead
 345           in some places. If unsure say N here.
 346
 347 config SCHED_MC
 348         bool "Multi-core scheduler support"
 349         depends on SPARC64 && SMP
 350         default y
 351         help
 352           Multi-core scheduler support improves the CPU scheduler's decision
 353           making when dealing with multi-core CPU chips at a cost of slightly
 354           increased overhead in some places. If unsure say N here.
 355
 356 source "kernel/Kconfig.preempt"
 357
 358 config CMDLINE_BOOL
 359         bool "Default bootloader kernel arguments"
 360         depends on SPARC64
 361
 362 config CMDLINE
 363         string "Initial kernel command string"
 364         depends on CMDLINE_BOOL
 365         default "console=ttyS0,9600 root=/dev/sda1"
 366         help
 367           Say Y here if you want to be able to pass default arguments to
 368           the kernel. This will be overridden by the bootloader, if you
 369           use one (such as SILO). This is most useful if you want to boot
 370           a kernel from TFTP, and want default options to be available
 371           with having them passed on the command line.
 372
 373           NOTE: This option WILL override the PROM bootargs setting!
 374
 375 config SUN_PM
 376         bool
 377         default y if SPARC32
 378         help
 379           Enable power management and CPU standby features on supported
 380           SPARC platforms.
 381
 382 config SPARC_LED
 383         tristate "Sun4m LED driver"
 384         depends on SPARC32
 385         help
 386           This driver toggles the front-panel LED on sun4m systems
 387           in a user-specifiable manner.  Its state can be probed
 388           by reading /proc/led and its blinking mode can be changed
 389           via writes to /proc/led
 390
 391 config SERIAL_CONSOLE
 392         bool
 393         depends on SPARC32
 394         default y
 395         ---help---
 396           If you say Y here, it will be possible to use a serial port as the
 397           system console (the system console is the device which receives all
 398           kernel messages and warnings and which allows logins in single user
 399           mode). This could be useful if some terminal or printer is connected
 400           to that serial port.
 401
 402           Even if you say Y here, the currently visible virtual console
 403           (/dev/tty0) will still be used as the system console by default, but
 404           you can alter that using a kernel command line option such as
 405           "console=ttyS1". (Try "man bootparam" or see the documentation of
 406           your boot loader (silo) about how to pass options to the kernel at
 407           boot time.)
 408
 409           If you don't have a graphics card installed and you say Y here, the
 410           kernel will automatically use the first serial line, /dev/ttyS0, as
 411           system console.
 412
 413           If unsure, say N.
 414
 415 config SPARC_LEON
 416         bool "Sparc Leon processor family"
 417         depends on SPARC32
 418         ---help---
 419           If you say Y here if you are running on a SPARC-LEON processor.
 420           The LEON processor is a synthesizable VHDL model of the
 421           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 422           IP cores that are distributed under GPL. GRLIB can be downloaded
 423           from www.gaisler.com. You can download a sparc-linux cross-compilation
 424           toolchain at www.gaisler.com.
 425
 426 if SPARC_LEON
 427 menu "U-Boot options"
 428
 429 config UBOOT_LOAD_ADDR
 430         hex "uImage Load Address"
 431         default 0x40004000
 432         ---help---
 433          U-Boot kernel load address, the address in physical address space
 434          where u-boot will place the Linux kernel before booting it.
 435          This address is normally the base address of main memory + 0x4000.
 436
 437 config UBOOT_FLASH_ADDR
 438         hex "uImage.o Load Address"
 439         default 0x00080000
 440         ---help---
 441          Optional setting only affecting the uImage.o ELF-image used to
 442          download the uImage file to the target using a ELF-loader other than
 443          U-Boot. It may for example be used to download an uImage to FLASH with
 444          the GRMON utility before even starting u-boot.
 445
 446 config UBOOT_ENTRY_ADDR
 447         hex "uImage Entry Address"
 448         default 0xf0004000
 449         ---help---
 450          Do not change this unless you know what you're doing. This is
 451          hardcoded by the SPARC32 and LEON port.
 452
 453          This is the virtual address u-boot jumps to when booting the Linux
 454          Kernel.
 455
 456 endmenu
 457 endif
 458
 459 endmenu
 460
 461 menu "Bus options (PCI etc.)"
 462 config SBUS
 463         bool
 464         default y
 465
 466 config SBUSCHAR
 467         bool
 468         default y
 469
 470 config SUN_LDOMS
 471         bool "Sun Logical Domains support"
 472         depends on SPARC64
 473         help
 474           Say Y here is you want to support virtual devices via
 475           Logical Domains.
 476
 477 config PCI
 478         bool "Support for PCI and PS/2 keyboard/mouse"
 479         help
 480           Find out whether your system includes a PCI bus. PCI is the name of
 481           a bus system, i.e. the way the CPU talks to the other stuff inside
 482           your box.  If you say Y here, the kernel will include drivers and
 483           infrastructure code to support PCI bus devices.
 484
 485           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 486           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 487           All of these platforms are extremely obscure, so say N if unsure.
 488
 489 config PCI_DOMAINS
 490         def_bool PCI if SPARC64
 491
 492 config PCI_SYSCALL
 493         def_bool PCI
 494
 495 config PCIC_PCI
 496         bool
 497         depends on PCI && SPARC32 && !SPARC_LEON
 498         default y
 499
 500 config LEON_PCI
 501         bool
 502         depends on PCI && SPARC_LEON
 503         default y
 504
 505 config GRPCI2
 506         bool "GRPCI2 Host Bridge Support"
 507         depends on LEON_PCI
 508         default y
 509         help
 510           Say Y here to include the GRPCI2 Host Bridge Driver.
 511
 512 source "drivers/pci/Kconfig"
 513
 514 source "drivers/pcmcia/Kconfig"
 515
 516 config SUN_OPENPROMFS
 517         tristate "Openprom tree appears in /proc/openprom"
 518         help
 519           If you say Y, the OpenPROM device tree will be available as a
 520           virtual file system, which you can mount to /proc/openprom by "mount
 521           -t openpromfs none /proc/openprom".
 522
 523           To compile the /proc/openprom support as a module, choose M here: the
 524           module will be called openpromfs.
 525
 526           Only choose N if you know in advance that you will not need to modify
 527           OpenPROM settings on the running system.
 528
 529 # Makefile helper
 530 config SPARC64_PCI
 531         bool
 532         default y
 533         depends on SPARC64 && PCI
 534
 535 endmenu
 536
 537 menu "Executable file formats"
 538
 539 source "fs/Kconfig.binfmt"
 540
 541 config COMPAT
 542         bool
 543         depends on SPARC64
 544         default y
 545         select COMPAT_BINFMT_ELF
 546         select HAVE_UID16
 547         select ARCH_WANT_OLD_COMPAT_IPC
 548
 549 config SYSVIPC_COMPAT
 550         bool
 551         depends on COMPAT && SYSVIPC
 552         default y
 553
 554 config KEYS_COMPAT
 555         def_bool y if COMPAT && KEYS
 556
 557 endmenu
 558
 559 source "net/Kconfig"
 560
 561 source "drivers/Kconfig"
 562
 563 source "drivers/sbus/char/Kconfig"
 564
 565 source "fs/Kconfig"
 566
 567 source "arch/sparc/Kconfig.debug"
 568
 569 source "security/Kconfig"
 570
 571 source "crypto/Kconfig"
 572
 573 source "lib/Kconfig"