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 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 GENERIC_SMP_IDLE_THREAD
  36         select GENERIC_CMOS_UPDATE
  37         select GENERIC_CLOCKEVENTS
  38         select GENERIC_STRNCPY_FROM_USER
  39         select GENERIC_STRNLEN_USER
  40
  41 config SPARC32
  42         def_bool !64BIT
  43         select GENERIC_ATOMIC64
  44         select CLZ_TAB
  45         select HAVE_UID16
  46
  47 config SPARC64
  48         def_bool 64BIT
  49         select ARCH_SUPPORTS_MSI
  50         select HAVE_FUNCTION_TRACER
  51         select HAVE_FUNCTION_GRAPH_TRACER
  52         select HAVE_FUNCTION_GRAPH_FP_TEST
  53         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  54         select HAVE_KRETPROBES
  55         select HAVE_KPROBES
  56         select HAVE_RCU_TABLE_FREE if SMP
  57         select HAVE_MEMBLOCK
  58         select HAVE_MEMBLOCK_NODE_MAP
  59         select HAVE_SYSCALL_WRAPPERS
  60         select HAVE_DYNAMIC_FTRACE
  61         select HAVE_FTRACE_MCOUNT_RECORD
  62         select HAVE_SYSCALL_TRACEPOINTS
  63         select HAVE_DEBUG_KMEMLEAK
  64         select RTC_DRV_CMOS
  65         select RTC_DRV_BQ4802
  66         select RTC_DRV_SUN4V
  67         select RTC_DRV_STARFIRE
  68         select HAVE_PERF_EVENTS
  69         select PERF_USE_VMALLOC
  70         select IRQ_PREFLOW_FASTEOI
  71         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  72         select HAVE_C_RECORDMCOUNT
  73         select NO_BOOTMEM
  74
  75 config ARCH_DEFCONFIG
  76         string
  77         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  78         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  79
  80 # CONFIG_BITS can be used at source level to get 32/64 bits
  81 config BITS
  82         int
  83         default 32 if SPARC32
  84         default 64 if SPARC64
  85
  86 config IOMMU_HELPER
  87         bool
  88         default y if SPARC64
  89
  90 config STACKTRACE_SUPPORT
  91         bool
  92         default y if SPARC64
  93
  94 config LOCKDEP_SUPPORT
  95         bool
  96         default y if SPARC64
  97
  98 config HAVE_LATENCYTOP_SUPPORT
  99         bool
 100         default y if SPARC64
 101
 102 config AUDIT_ARCH
 103         bool
 104         default y
 105
 106 config HAVE_SETUP_PER_CPU_AREA
 107         def_bool y if SPARC64
 108
 109 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 110         def_bool y if SPARC64
 111
 112 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 113         def_bool y if SPARC64
 114
 115 config MMU
 116         bool
 117         default y
 118
 119 config HIGHMEM
 120         bool
 121         default y if SPARC32
 122
 123 config ZONE_DMA
 124         bool
 125         default y if SPARC32
 126
 127 config NEED_DMA_MAP_STATE
 128         def_bool y
 129
 130 config NEED_SG_DMA_LENGTH
 131         def_bool y
 132
 133 config GENERIC_ISA_DMA
 134         bool
 135         default y if SPARC32
 136
 137 config GENERIC_GPIO
 138         bool
 139         help
 140           Generic GPIO API support
 141
 142 config ARCH_NO_VIRT_TO_BUS
 143         def_bool y
 144
 145 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 146         def_bool y if SPARC64
 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 single 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           singleprocessor machines. On a singleprocessor 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 if !ULTRA_HAS_POPULATION_COUNT
 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 choice
 232         prompt "Kernel page size" if SPARC64
 233         default SPARC64_PAGE_SIZE_8KB
 234
 235 config SPARC64_PAGE_SIZE_8KB
 236         bool "8KB"
 237         help
 238           This lets you select the page size of the kernel.
 239
 240           8KB and 64KB work quite well, since SPARC ELF sections
 241           provide for up to 64KB alignment.
 242
 243           If you don't know what to do, choose 8KB.
 244
 245 config SPARC64_PAGE_SIZE_64KB
 246         bool "64KB"
 247
 248 endchoice
 249
 250 config SECCOMP
 251         bool "Enable seccomp to safely compute untrusted bytecode"
 252         depends on SPARC64 && PROC_FS
 253         default y
 254         help
 255           This kernel feature is useful for number crunching applications
 256           that may need to compute untrusted bytecode during their
 257           execution. By using pipes or other transports made available to
 258           the process as file descriptors supporting the read/write
 259           syscalls, it's possible to isolate those applications in
 260           their own address space using seccomp. Once seccomp is
 261           enabled via /proc/<pid>/seccomp, it cannot be disabled
 262           and the task is only allowed to execute a few safe syscalls
 263           defined by each seccomp mode.
 264
 265           If unsure, say Y. Only embedded should say N here.
 266
 267 config HOTPLUG_CPU
 268         bool "Support for hot-pluggable CPUs"
 269         depends on SPARC64 && SMP
 270         select HOTPLUG
 271         help
 272           Say Y here to experiment with turning CPUs off and on.  CPUs
 273           can be controlled through /sys/devices/system/cpu/cpu#.
 274           Say N if you want to disable CPU hotplug.
 275
 276 if SPARC64
 277 source "drivers/cpufreq/Kconfig"
 278
 279 config US3_FREQ
 280         tristate "UltraSPARC-III CPU Frequency driver"
 281         depends on CPU_FREQ
 282         select CPU_FREQ_TABLE
 283         help
 284           This adds the CPUFreq driver for UltraSPARC-III processors.
 285
 286           For details, take a look at <file:Documentation/cpu-freq>.
 287
 288           If in doubt, say N.
 289
 290 config US2E_FREQ
 291         tristate "UltraSPARC-IIe CPU Frequency driver"
 292         depends on CPU_FREQ
 293         select CPU_FREQ_TABLE
 294         help
 295           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 296
 297           For details, take a look at <file:Documentation/cpu-freq>.
 298
 299           If in doubt, say N.
 300
 301 endif
 302
 303 config US3_MC
 304         tristate "UltraSPARC-III Memory Controller driver"
 305         depends on SPARC64
 306         default y
 307         help
 308           This adds a driver for the UltraSPARC-III memory controller.
 309           Loading this driver allows exact mnemonic strings to be
 310           printed in the event of a memory error, so that the faulty DIMM
 311           on the motherboard can be matched to the error.
 312
 313           If in doubt, say Y, as this information can be very useful.
 314
 315 # Global things across all Sun machines.
 316 config GENERIC_LOCKBREAK
 317         bool
 318         default y
 319         depends on SPARC64 && SMP && PREEMPT
 320
 321 choice
 322         prompt "SPARC64 Huge TLB Page Size"
 323         depends on SPARC64 && HUGETLB_PAGE
 324         default HUGETLB_PAGE_SIZE_4MB
 325
 326 config HUGETLB_PAGE_SIZE_4MB
 327         bool "4MB"
 328
 329 config HUGETLB_PAGE_SIZE_512K
 330         bool "512K"
 331
 332 config HUGETLB_PAGE_SIZE_64K
 333         depends on !SPARC64_PAGE_SIZE_64KB
 334         bool "64K"
 335
 336 endchoice
 337
 338 config NUMA
 339         bool "NUMA support"
 340         depends on SPARC64 && SMP
 341
 342 config NODES_SHIFT
 343         int
 344         default "4"
 345         depends on NEED_MULTIPLE_NODES
 346
 347 # Some NUMA nodes have memory ranges that span
 348 # other nodes.  Even though a pfn is valid and
 349 # between a node's start and end pfns, it may not
 350 # reside on that node.  See memmap_init_zone()
 351 # for details.
 352 config NODES_SPAN_OTHER_NODES
 353         def_bool y
 354         depends on NEED_MULTIPLE_NODES
 355
 356 config ARCH_SELECT_MEMORY_MODEL
 357         def_bool y if SPARC64
 358
 359 config ARCH_SPARSEMEM_ENABLE
 360         def_bool y if SPARC64
 361         select SPARSEMEM_VMEMMAP_ENABLE
 362
 363 config ARCH_SPARSEMEM_DEFAULT
 364         def_bool y if SPARC64
 365
 366 source "mm/Kconfig"
 367
 368 config SCHED_SMT
 369         bool "SMT (Hyperthreading) scheduler support"
 370         depends on SPARC64 && SMP
 371         default y
 372         help
 373           SMT scheduler support improves the CPU scheduler's decision making
 374           when dealing with SPARC cpus at a cost of slightly increased overhead
 375           in some places. If unsure say N here.
 376
 377 config SCHED_MC
 378         bool "Multi-core scheduler support"
 379         depends on SPARC64 && SMP
 380         default y
 381         help
 382           Multi-core scheduler support improves the CPU scheduler's decision
 383           making when dealing with multi-core CPU chips at a cost of slightly
 384           increased overhead in some places. If unsure say N here.
 385
 386 source "kernel/Kconfig.preempt"
 387
 388 config CMDLINE_BOOL
 389         bool "Default bootloader kernel arguments"
 390         depends on SPARC64
 391
 392 config CMDLINE
 393         string "Initial kernel command string"
 394         depends on CMDLINE_BOOL
 395         default "console=ttyS0,9600 root=/dev/sda1"
 396         help
 397           Say Y here if you want to be able to pass default arguments to
 398           the kernel. This will be overridden by the bootloader, if you
 399           use one (such as SILO). This is most useful if you want to boot
 400           a kernel from TFTP, and want default options to be available
 401           with having them passed on the command line.
 402
 403           NOTE: This option WILL override the PROM bootargs setting!
 404
 405 config SUN_PM
 406         bool
 407         default y if SPARC32
 408         help
 409           Enable power management and CPU standby features on supported
 410           SPARC platforms.
 411
 412 config SPARC_LED
 413         tristate "Sun4m LED driver"
 414         depends on SPARC32
 415         help
 416           This driver toggles the front-panel LED on sun4m systems
 417           in a user-specifiable manner.  Its state can be probed
 418           by reading /proc/led and its blinking mode can be changed
 419           via writes to /proc/led
 420
 421 config SERIAL_CONSOLE
 422         bool
 423         depends on SPARC32
 424         default y
 425         ---help---
 426           If you say Y here, it will be possible to use a serial port as the
 427           system console (the system console is the device which receives all
 428           kernel messages and warnings and which allows logins in single user
 429           mode). This could be useful if some terminal or printer is connected
 430           to that serial port.
 431
 432           Even if you say Y here, the currently visible virtual console
 433           (/dev/tty0) will still be used as the system console by default, but
 434           you can alter that using a kernel command line option such as
 435           "console=ttyS1". (Try "man bootparam" or see the documentation of
 436           your boot loader (silo) about how to pass options to the kernel at
 437           boot time.)
 438
 439           If you don't have a graphics card installed and you say Y here, the
 440           kernel will automatically use the first serial line, /dev/ttyS0, as
 441           system console.
 442
 443           If unsure, say N.
 444
 445 config SPARC_LEON
 446         bool "Sparc Leon processor family"
 447         depends on SPARC32
 448         ---help---
 449           If you say Y here if you are running on a SPARC-LEON processor.
 450           The LEON processor is a synthesizable VHDL model of the
 451           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 452           IP cores that are distributed under GPL. GRLIB can be downloaded
 453           from www.gaisler.com. You can download a sparc-linux cross-compilation
 454           toolchain at www.gaisler.com.
 455
 456 if SPARC_LEON
 457 menu "U-Boot options"
 458
 459 config UBOOT_LOAD_ADDR
 460         hex "uImage Load Address"
 461         default 0x40004000
 462         ---help---
 463          U-Boot kernel load address, the address in physical address space
 464          where u-boot will place the Linux kernel before booting it.
 465          This address is normally the base address of main memory + 0x4000.
 466
 467 config UBOOT_FLASH_ADDR
 468         hex "uImage.o Load Address"
 469         default 0x00080000
 470         ---help---
 471          Optional setting only affecting the uImage.o ELF-image used to
 472          download the uImage file to the target using a ELF-loader other than
 473          U-Boot. It may for example be used to download an uImage to FLASH with
 474          the GRMON utility before even starting u-boot.
 475
 476 config UBOOT_ENTRY_ADDR
 477         hex "uImage Entry Address"
 478         default 0xf0004000
 479         ---help---
 480          Do not change this unless you know what you're doing. This is
 481          hardcoded by the SPARC32 and LEON port.
 482
 483          This is the virtual address u-boot jumps to when booting the Linux
 484          Kernel.
 485
 486 endmenu
 487 endif
 488
 489 endmenu
 490
 491 menu "Bus options (PCI etc.)"
 492 config SBUS
 493         bool
 494         default y
 495
 496 config SBUSCHAR
 497         bool
 498         default y
 499
 500 config SUN_LDOMS
 501         bool "Sun Logical Domains support"
 502         depends on SPARC64
 503         help
 504           Say Y here is you want to support virtual devices via
 505           Logical Domains.
 506
 507 config PCI
 508         bool "Support for PCI and PS/2 keyboard/mouse"
 509         help
 510           Find out whether your system includes a PCI bus. PCI is the name of
 511           a bus system, i.e. the way the CPU talks to the other stuff inside
 512           your box.  If you say Y here, the kernel will include drivers and
 513           infrastructure code to support PCI bus devices.
 514
 515           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 516           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 517           All of these platforms are extremely obscure, so say N if unsure.
 518
 519 config PCI_DOMAINS
 520         def_bool PCI if SPARC64
 521
 522 config PCI_SYSCALL
 523         def_bool PCI
 524
 525 config PCIC_PCI
 526         bool
 527         depends on PCI && SPARC32 && !SPARC_LEON
 528         default y
 529
 530 config LEON_PCI
 531         bool
 532         depends on PCI && SPARC_LEON
 533         default y
 534
 535 config GRPCI2
 536         bool "GRPCI2 Host Bridge Support"
 537         depends on LEON_PCI
 538         default y
 539         help
 540           Say Y here to include the GRPCI2 Host Bridge Driver.
 541
 542 source "drivers/pci/Kconfig"
 543
 544 source "drivers/pcmcia/Kconfig"
 545
 546 config SUN_OPENPROMFS
 547         tristate "Openprom tree appears in /proc/openprom"
 548         help
 549           If you say Y, the OpenPROM device tree will be available as a
 550           virtual file system, which you can mount to /proc/openprom by "mount
 551           -t openpromfs none /proc/openprom".
 552
 553           To compile the /proc/openprom support as a module, choose M here: the
 554           module will be called openpromfs.
 555
 556           Only choose N if you know in advance that you will not need to modify
 557           OpenPROM settings on the running system.
 558
 559 # Makefile helper
 560 config SPARC64_PCI
 561         bool
 562         default y
 563         depends on SPARC64 && PCI
 564
 565 endmenu
 566
 567 menu "Executable file formats"
 568
 569 source "fs/Kconfig.binfmt"
 570
 571 config COMPAT
 572         bool
 573         depends on SPARC64
 574         default y
 575         select COMPAT_BINFMT_ELF
 576         select HAVE_UID16
 577         select ARCH_WANT_OLD_COMPAT_IPC
 578
 579 config SYSVIPC_COMPAT
 580         bool
 581         depends on COMPAT && SYSVIPC
 582         default y
 583
 584 config KEYS_COMPAT
 585         def_bool y if COMPAT && KEYS
 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"