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 ARCH_WANT_OPTIONAL_GPIOLIB
  22         select RTC_CLASS
  23         select RTC_DRV_M48T59
  24         select HAVE_IRQ_WORK
  25         select HAVE_DMA_ATTRS
  26         select HAVE_DMA_API_DEBUG
  27         select HAVE_ARCH_JUMP_LABEL
  28         select HAVE_GENERIC_HARDIRQS
  29         select GENERIC_IRQ_SHOW
  30         select USE_GENERIC_SMP_HELPERS if SMP
  31         select GENERIC_PCI_IOMAP
  32         select HAVE_NMI_WATCHDOG if SPARC64
  33
  34 config SPARC32
  35         def_bool !64BIT
  36         select GENERIC_ATOMIC64
  37         select CLZ_TAB
  38
  39 config SPARC64
  40         def_bool 64BIT
  41         select ARCH_SUPPORTS_MSI
  42         select HAVE_FUNCTION_TRACER
  43         select HAVE_FUNCTION_GRAPH_TRACER
  44         select HAVE_FUNCTION_GRAPH_FP_TEST
  45         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  46         select HAVE_KRETPROBES
  47         select HAVE_KPROBES
  48         select HAVE_RCU_TABLE_FREE if SMP
  49         select HAVE_MEMBLOCK
  50         select HAVE_MEMBLOCK_NODE_MAP
  51         select HAVE_SYSCALL_WRAPPERS
  52         select HAVE_DYNAMIC_FTRACE
  53         select HAVE_FTRACE_MCOUNT_RECORD
  54         select HAVE_SYSCALL_TRACEPOINTS
  55         select RTC_DRV_CMOS
  56         select RTC_DRV_BQ4802
  57         select RTC_DRV_SUN4V
  58         select RTC_DRV_STARFIRE
  59         select HAVE_PERF_EVENTS
  60         select PERF_USE_VMALLOC
  61         select IRQ_PREFLOW_FASTEOI
  62         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  63         select HAVE_C_RECORDMCOUNT
  64
  65 config ARCH_DEFCONFIG
  66         string
  67         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  68         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  69
  70 # CONFIG_BITS can be used at source level to get 32/64 bits
  71 config BITS
  72         int
  73         default 32 if SPARC32
  74         default 64 if SPARC64
  75
  76 config ARCH_USES_GETTIMEOFFSET
  77         bool
  78         default y if SPARC32
  79
  80 config GENERIC_CMOS_UPDATE
  81         bool
  82         default y
  83
  84 config GENERIC_CLOCKEVENTS
  85         bool
  86         default y 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_NO_VIRT_TO_BUS
 145         def_bool y
 146
 147 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 148         def_bool y if SPARC64
 149
 150 source "init/Kconfig"
 151
 152 source "kernel/Kconfig.freezer"
 153
 154 menu "Processor type and features"
 155
 156 config SMP
 157         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 158         ---help---
 159           This enables support for systems with more than one CPU. If you have
 160           a system with only one CPU, say N. If you have a system with more
 161           than one CPU, say Y.
 162
 163           If you say N here, the kernel will run on single and multiprocessor
 164           machines, but will use only one CPU of a multiprocessor machine. If
 165           you say Y here, the kernel will run on many, but not all,
 166           singleprocessor machines. On a singleprocessor machine, the kernel
 167           will run faster if you say N here.
 168
 169           People using multiprocessor machines who say Y here should also say
 170           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 171           Management" code will be disabled if you say Y here.
 172
 173           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 174           available at <http://www.tldp.org/docs.html#howto>.
 175
 176           If you don't know what to do here, say N.
 177
 178 config NR_CPUS
 179         int "Maximum number of CPUs"
 180         depends on SMP
 181         range 2 32 if SPARC32
 182         range 2 1024 if SPARC64
 183         default 32 if SPARC32
 184         default 64 if SPARC64
 185
 186 source kernel/Kconfig.hz
 187
 188 config RWSEM_GENERIC_SPINLOCK
 189         bool
 190         default y if SPARC32
 191
 192 config RWSEM_XCHGADD_ALGORITHM
 193         bool
 194         default y if SPARC64
 195
 196 config GENERIC_HWEIGHT
 197         bool
 198         default y if !ULTRA_HAS_POPULATION_COUNT
 199
 200 config GENERIC_CALIBRATE_DELAY
 201         bool
 202         default y
 203
 204 config ARCH_MAY_HAVE_PC_FDC
 205         bool
 206         default y
 207
 208 config EMULATED_CMPXCHG
 209         bool
 210         default y if SPARC32
 211         help
 212           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 213           is emulated, and therefore it is not completely atomic.
 214
 215 # Makefile helpers
 216 config SPARC32_SMP
 217         bool
 218         default y
 219         depends on SPARC32 && SMP
 220
 221 config SPARC64_SMP
 222         bool
 223         default y
 224         depends on SPARC64 && SMP
 225
 226 config EARLYFB
 227         bool "Support for early boot text console"
 228         default y
 229         depends on SPARC64
 230         help
 231           Say Y here to enable a faster early framebuffer boot console.
 232
 233 choice
 234         prompt "Kernel page size" if SPARC64
 235         default SPARC64_PAGE_SIZE_8KB
 236
 237 config SPARC64_PAGE_SIZE_8KB
 238         bool "8KB"
 239         help
 240           This lets you select the page size of the kernel.
 241
 242           8KB and 64KB work quite well, since SPARC ELF sections
 243           provide for up to 64KB alignment.
 244
 245           If you don't know what to do, choose 8KB.
 246
 247 config SPARC64_PAGE_SIZE_64KB
 248         bool "64KB"
 249
 250 endchoice
 251
 252 config SECCOMP
 253         bool "Enable seccomp to safely compute untrusted bytecode"
 254         depends on SPARC64 && PROC_FS
 255         default y
 256         help
 257           This kernel feature is useful for number crunching applications
 258           that may need to compute untrusted bytecode during their
 259           execution. By using pipes or other transports made available to
 260           the process as file descriptors supporting the read/write
 261           syscalls, it's possible to isolate those applications in
 262           their own address space using seccomp. Once seccomp is
 263           enabled via /proc/<pid>/seccomp, it cannot be disabled
 264           and the task is only allowed to execute a few safe syscalls
 265           defined by each seccomp mode.
 266
 267           If unsure, say Y. Only embedded should say N here.
 268
 269 config HOTPLUG_CPU
 270         bool "Support for hot-pluggable CPUs"
 271         depends on SPARC64 && SMP
 272         select HOTPLUG
 273         help
 274           Say Y here to experiment with turning CPUs off and on.  CPUs
 275           can be controlled through /sys/devices/system/cpu/cpu#.
 276           Say N if you want to disable CPU hotplug.
 277
 278 source "kernel/time/Kconfig"
 279
 280 if SPARC64
 281 source "drivers/cpufreq/Kconfig"
 282
 283 config US3_FREQ
 284         tristate "UltraSPARC-III CPU Frequency driver"
 285         depends on CPU_FREQ
 286         select CPU_FREQ_TABLE
 287         help
 288           This adds the CPUFreq driver for UltraSPARC-III processors.
 289
 290           For details, take a look at <file:Documentation/cpu-freq>.
 291
 292           If in doubt, say N.
 293
 294 config US2E_FREQ
 295         tristate "UltraSPARC-IIe CPU Frequency driver"
 296         depends on CPU_FREQ
 297         select CPU_FREQ_TABLE
 298         help
 299           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 300
 301           For details, take a look at <file:Documentation/cpu-freq>.
 302
 303           If in doubt, say N.
 304
 305 endif
 306
 307 config US3_MC
 308         tristate "UltraSPARC-III Memory Controller driver"
 309         depends on SPARC64
 310         default y
 311         help
 312           This adds a driver for the UltraSPARC-III memory controller.
 313           Loading this driver allows exact mnemonic strings to be
 314           printed in the event of a memory error, so that the faulty DIMM
 315           on the motherboard can be matched to the error.
 316
 317           If in doubt, say Y, as this information can be very useful.
 318
 319 # Global things across all Sun machines.
 320 config GENERIC_LOCKBREAK
 321         bool
 322         default y
 323         depends on SPARC64 && SMP && PREEMPT
 324
 325 choice
 326         prompt "SPARC64 Huge TLB Page Size"
 327         depends on SPARC64 && HUGETLB_PAGE
 328         default HUGETLB_PAGE_SIZE_4MB
 329
 330 config HUGETLB_PAGE_SIZE_4MB
 331         bool "4MB"
 332
 333 config HUGETLB_PAGE_SIZE_512K
 334         bool "512K"
 335
 336 config HUGETLB_PAGE_SIZE_64K
 337         depends on !SPARC64_PAGE_SIZE_64KB
 338         bool "64K"
 339
 340 endchoice
 341
 342 config NUMA
 343         bool "NUMA support"
 344         depends on SPARC64 && SMP
 345
 346 config NODES_SHIFT
 347         int
 348         default "4"
 349         depends on NEED_MULTIPLE_NODES
 350
 351 # Some NUMA nodes have memory ranges that span
 352 # other nodes.  Even though a pfn is valid and
 353 # between a node's start and end pfns, it may not
 354 # reside on that node.  See memmap_init_zone()
 355 # for details.
 356 config NODES_SPAN_OTHER_NODES
 357         def_bool y
 358         depends on NEED_MULTIPLE_NODES
 359
 360 config ARCH_SELECT_MEMORY_MODEL
 361         def_bool y if SPARC64
 362
 363 config ARCH_SPARSEMEM_ENABLE
 364         def_bool y if SPARC64
 365         select SPARSEMEM_VMEMMAP_ENABLE
 366
 367 config ARCH_SPARSEMEM_DEFAULT
 368         def_bool y if SPARC64
 369
 370 source "mm/Kconfig"
 371
 372 config SCHED_SMT
 373         bool "SMT (Hyperthreading) scheduler support"
 374         depends on SPARC64 && SMP
 375         default y
 376         help
 377           SMT scheduler support improves the CPU scheduler's decision making
 378           when dealing with SPARC cpus at a cost of slightly increased overhead
 379           in some places. If unsure say N here.
 380
 381 config SCHED_MC
 382         bool "Multi-core scheduler support"
 383         depends on SPARC64 && SMP
 384         default y
 385         help
 386           Multi-core scheduler support improves the CPU scheduler's decision
 387           making when dealing with multi-core CPU chips at a cost of slightly
 388           increased overhead in some places. If unsure say N here.
 389
 390 source "kernel/Kconfig.preempt"
 391
 392 config CMDLINE_BOOL
 393         bool "Default bootloader kernel arguments"
 394         depends on SPARC64
 395
 396 config CMDLINE
 397         string "Initial kernel command string"
 398         depends on CMDLINE_BOOL
 399         default "console=ttyS0,9600 root=/dev/sda1"
 400         help
 401           Say Y here if you want to be able to pass default arguments to
 402           the kernel. This will be overridden by the bootloader, if you
 403           use one (such as SILO). This is most useful if you want to boot
 404           a kernel from TFTP, and want default options to be available
 405           with having them passed on the command line.
 406
 407           NOTE: This option WILL override the PROM bootargs setting!
 408
 409 config SUN_PM
 410         bool
 411         default y if SPARC32
 412         help
 413           Enable power management and CPU standby features on supported
 414           SPARC platforms.
 415
 416 config SPARC_LED
 417         tristate "Sun4m LED driver"
 418         depends on SPARC32
 419         help
 420           This driver toggles the front-panel LED on sun4m systems
 421           in a user-specifiable manner.  Its state can be probed
 422           by reading /proc/led and its blinking mode can be changed
 423           via writes to /proc/led
 424
 425 config SERIAL_CONSOLE
 426         bool
 427         depends on SPARC32
 428         default y
 429         ---help---
 430           If you say Y here, it will be possible to use a serial port as the
 431           system console (the system console is the device which receives all
 432           kernel messages and warnings and which allows logins in single user
 433           mode). This could be useful if some terminal or printer is connected
 434           to that serial port.
 435
 436           Even if you say Y here, the currently visible virtual console
 437           (/dev/tty0) will still be used as the system console by default, but
 438           you can alter that using a kernel command line option such as
 439           "console=ttyS1". (Try "man bootparam" or see the documentation of
 440           your boot loader (silo) about how to pass options to the kernel at
 441           boot time.)
 442
 443           If you don't have a graphics card installed and you say Y here, the
 444           kernel will automatically use the first serial line, /dev/ttyS0, as
 445           system console.
 446
 447           If unsure, say N.
 448
 449 config SPARC_LEON
 450         bool "Sparc Leon processor family"
 451         depends on SPARC32
 452         ---help---
 453           If you say Y here if you are running on a SPARC-LEON processor.
 454           The LEON processor is a synthesizable VHDL model of the
 455           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 456           IP cores that are distributed under GPL. GRLIB can be downloaded
 457           from www.gaisler.com. You can download a sparc-linux cross-compilation
 458           toolchain at www.gaisler.com.
 459
 460 if SPARC_LEON
 461 menu "U-Boot options"
 462
 463 config UBOOT_LOAD_ADDR
 464         hex "uImage Load Address"
 465         default 0x40004000
 466         ---help---
 467          U-Boot kernel load address, the address in physical address space
 468          where u-boot will place the Linux kernel before booting it.
 469          This address is normally the base address of main memory + 0x4000.
 470
 471 config UBOOT_FLASH_ADDR
 472         hex "uImage.o Load Address"
 473         default 0x00080000
 474         ---help---
 475          Optional setting only affecting the uImage.o ELF-image used to
 476          download the uImage file to the target using a ELF-loader other than
 477          U-Boot. It may for example be used to download an uImage to FLASH with
 478          the GRMON utility before even starting u-boot.
 479
 480 config UBOOT_ENTRY_ADDR
 481         hex "uImage Entry Address"
 482         default 0xf0004000
 483         ---help---
 484          Do not change this unless you know what you're doing. This is
 485          hardcoded by the SPARC32 and LEON port.
 486
 487          This is the virtual address u-boot jumps to when booting the Linux
 488          Kernel.
 489
 490 endmenu
 491 endif
 492
 493 endmenu
 494
 495 menu "Bus options (PCI etc.)"
 496 config SBUS
 497         bool
 498         default y
 499
 500 config SBUSCHAR
 501         bool
 502         default y
 503
 504 config SUN_LDOMS
 505         bool "Sun Logical Domains support"
 506         depends on SPARC64
 507         help
 508           Say Y here is you want to support virtual devices via
 509           Logical Domains.
 510
 511 config PCI
 512         bool "Support for PCI and PS/2 keyboard/mouse"
 513         help
 514           Find out whether your system includes a PCI bus. PCI is the name of
 515           a bus system, i.e. the way the CPU talks to the other stuff inside
 516           your box.  If you say Y here, the kernel will include drivers and
 517           infrastructure code to support PCI bus devices.
 518
 519           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 520           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 521           All of these platforms are extremely obscure, so say N if unsure.
 522
 523 config PCI_DOMAINS
 524         def_bool PCI if SPARC64
 525
 526 config PCI_SYSCALL
 527         def_bool PCI
 528
 529 config PCIC_PCI
 530         bool
 531         depends on PCI && SPARC32 && !SPARC_LEON
 532         default y
 533
 534 config LEON_PCI
 535         bool
 536         depends on PCI && SPARC_LEON
 537         default y
 538
 539 config GRPCI2
 540         bool "GRPCI2 Host Bridge Support"
 541         depends on LEON_PCI
 542         default y
 543         help
 544           Say Y here to include the GRPCI2 Host Bridge Driver.
 545
 546 source "drivers/pci/Kconfig"
 547
 548 source "drivers/pcmcia/Kconfig"
 549
 550 config SUN_OPENPROMFS
 551         tristate "Openprom tree appears in /proc/openprom"
 552         help
 553           If you say Y, the OpenPROM device tree will be available as a
 554           virtual file system, which you can mount to /proc/openprom by "mount
 555           -t openpromfs none /proc/openprom".
 556
 557           To compile the /proc/openprom support as a module, choose M here: the
 558           module will be called openpromfs.
 559
 560           Only choose N if you know in advance that you will not need to modify
 561           OpenPROM settings on the running system.
 562
 563 # Makefile helper
 564 config SPARC64_PCI
 565         bool
 566         default y
 567         depends on SPARC64 && PCI
 568
 569 endmenu
 570
 571 menu "Executable file formats"
 572
 573 source "fs/Kconfig.binfmt"
 574
 575 config COMPAT
 576         bool
 577         depends on SPARC64
 578         default y
 579         select COMPAT_BINFMT_ELF
 580         select ARCH_WANT_OLD_COMPAT_IPC
 581
 582 config SYSVIPC_COMPAT
 583         bool
 584         depends on COMPAT && SYSVIPC
 585         default y
 586
 587 endmenu
 588
 589 source "net/Kconfig"
 590
 591 source "drivers/Kconfig"
 592
 593 source "drivers/sbus/char/Kconfig"
 594
 595 source "fs/Kconfig"
 596
 597 source "arch/sparc/Kconfig.debug"
 598
 599 source "security/Kconfig"
 600
 601 source "crypto/Kconfig"
 602
 603 source "lib/Kconfig"