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         select MODULES_USE_ELF_RELA
  41
  42 config SPARC32
  43         def_bool !64BIT
  44         select GENERIC_ATOMIC64
  45         select CLZ_TAB
  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 RTC_DRV_CMOS
  64         select RTC_DRV_BQ4802
  65         select RTC_DRV_SUN4V
  66         select RTC_DRV_STARFIRE
  67         select HAVE_PERF_EVENTS
  68         select PERF_USE_VMALLOC
  69         select IRQ_PREFLOW_FASTEOI
  70         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  71         select HAVE_C_RECORDMCOUNT
  72         select NO_BOOTMEM
  73
  74 config ARCH_DEFCONFIG
  75         string
  76         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  77         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  78
  79 # CONFIG_BITS can be used at source level to get 32/64 bits
  80 config BITS
  81         int
  82         default 32 if SPARC32
  83         default 64 if SPARC64
  84
  85 config IOMMU_HELPER
  86         bool
  87         default y if SPARC64
  88
  89 config STACKTRACE_SUPPORT
  90         bool
  91         default y if SPARC64
  92
  93 config LOCKDEP_SUPPORT
  94         bool
  95         default y if SPARC64
  96
  97 config HAVE_LATENCYTOP_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config AUDIT_ARCH
 102         bool
 103         default y
 104
 105 config HAVE_SETUP_PER_CPU_AREA
 106         def_bool y if SPARC64
 107
 108 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 109         def_bool y if SPARC64
 110
 111 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 112         def_bool y if SPARC64
 113
 114 config MMU
 115         bool
 116         default y
 117
 118 config HIGHMEM
 119         bool
 120         default y if SPARC32
 121
 122 config ZONE_DMA
 123         bool
 124         default y if SPARC32
 125
 126 config NEED_DMA_MAP_STATE
 127         def_bool y
 128
 129 config NEED_SG_DMA_LENGTH
 130         def_bool y
 131
 132 config GENERIC_ISA_DMA
 133         bool
 134         default y if SPARC32
 135
 136 config GENERIC_GPIO
 137         bool
 138         help
 139           Generic GPIO API support
 140
 141 config ARCH_NO_VIRT_TO_BUS
 142         def_bool y
 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 if !ULTRA_HAS_POPULATION_COUNT
 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 choice
 231         prompt "Kernel page size" if SPARC64
 232         default SPARC64_PAGE_SIZE_8KB
 233
 234 config SPARC64_PAGE_SIZE_8KB
 235         bool "8KB"
 236         help
 237           This lets you select the page size of the kernel.
 238
 239           8KB and 64KB work quite well, since SPARC ELF sections
 240           provide for up to 64KB alignment.
 241
 242           If you don't know what to do, choose 8KB.
 243
 244 config SPARC64_PAGE_SIZE_64KB
 245         bool "64KB"
 246
 247 endchoice
 248
 249 config SECCOMP
 250         bool "Enable seccomp to safely compute untrusted bytecode"
 251         depends on SPARC64 && PROC_FS
 252         default y
 253         help
 254           This kernel feature is useful for number crunching applications
 255           that may need to compute untrusted bytecode during their
 256           execution. By using pipes or other transports made available to
 257           the process as file descriptors supporting the read/write
 258           syscalls, it's possible to isolate those applications in
 259           their own address space using seccomp. Once seccomp is
 260           enabled via /proc/<pid>/seccomp, it cannot be disabled
 261           and the task is only allowed to execute a few safe syscalls
 262           defined by each seccomp mode.
 263
 264           If unsure, say Y. Only embedded should say N here.
 265
 266 config HOTPLUG_CPU
 267         bool "Support for hot-pluggable CPUs"
 268         depends on SPARC64 && SMP
 269         select HOTPLUG
 270         help
 271           Say Y here to experiment with turning CPUs off and on.  CPUs
 272           can be controlled through /sys/devices/system/cpu/cpu#.
 273           Say N if you want to disable CPU hotplug.
 274
 275 if SPARC64
 276 source "drivers/cpufreq/Kconfig"
 277
 278 config US3_FREQ
 279         tristate "UltraSPARC-III CPU Frequency driver"
 280         depends on CPU_FREQ
 281         select CPU_FREQ_TABLE
 282         help
 283           This adds the CPUFreq driver for UltraSPARC-III processors.
 284
 285           For details, take a look at <file:Documentation/cpu-freq>.
 286
 287           If in doubt, say N.
 288
 289 config US2E_FREQ
 290         tristate "UltraSPARC-IIe CPU Frequency driver"
 291         depends on CPU_FREQ
 292         select CPU_FREQ_TABLE
 293         help
 294           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 295
 296           For details, take a look at <file:Documentation/cpu-freq>.
 297
 298           If in doubt, say N.
 299
 300 endif
 301
 302 config US3_MC
 303         tristate "UltraSPARC-III Memory Controller driver"
 304         depends on SPARC64
 305         default y
 306         help
 307           This adds a driver for the UltraSPARC-III memory controller.
 308           Loading this driver allows exact mnemonic strings to be
 309           printed in the event of a memory error, so that the faulty DIMM
 310           on the motherboard can be matched to the error.
 311
 312           If in doubt, say Y, as this information can be very useful.
 313
 314 # Global things across all Sun machines.
 315 config GENERIC_LOCKBREAK
 316         bool
 317         default y
 318         depends on SPARC64 && SMP && PREEMPT
 319
 320 choice
 321         prompt "SPARC64 Huge TLB Page Size"
 322         depends on SPARC64 && HUGETLB_PAGE
 323         default HUGETLB_PAGE_SIZE_4MB
 324
 325 config HUGETLB_PAGE_SIZE_4MB
 326         bool "4MB"
 327
 328 config HUGETLB_PAGE_SIZE_512K
 329         bool "512K"
 330
 331 config HUGETLB_PAGE_SIZE_64K
 332         depends on !SPARC64_PAGE_SIZE_64KB
 333         bool "64K"
 334
 335 endchoice
 336
 337 config NUMA
 338         bool "NUMA support"
 339         depends on SPARC64 && SMP
 340
 341 config NODES_SHIFT
 342         int
 343         default "4"
 344         depends on NEED_MULTIPLE_NODES
 345
 346 # Some NUMA nodes have memory ranges that span
 347 # other nodes.  Even though a pfn is valid and
 348 # between a node's start and end pfns, it may not
 349 # reside on that node.  See memmap_init_zone()
 350 # for details.
 351 config NODES_SPAN_OTHER_NODES
 352         def_bool y
 353         depends on NEED_MULTIPLE_NODES
 354
 355 config ARCH_SELECT_MEMORY_MODEL
 356         def_bool y if SPARC64
 357
 358 config ARCH_SPARSEMEM_ENABLE
 359         def_bool y if SPARC64
 360         select SPARSEMEM_VMEMMAP_ENABLE
 361
 362 config ARCH_SPARSEMEM_DEFAULT
 363         def_bool y if SPARC64
 364
 365 source "mm/Kconfig"
 366
 367 config SCHED_SMT
 368         bool "SMT (Hyperthreading) scheduler support"
 369         depends on SPARC64 && SMP
 370         default y
 371         help
 372           SMT scheduler support improves the CPU scheduler's decision making
 373           when dealing with SPARC cpus at a cost of slightly increased overhead
 374           in some places. If unsure say N here.
 375
 376 config SCHED_MC
 377         bool "Multi-core scheduler support"
 378         depends on SPARC64 && SMP
 379         default y
 380         help
 381           Multi-core scheduler support improves the CPU scheduler's decision
 382           making when dealing with multi-core CPU chips at a cost of slightly
 383           increased overhead in some places. If unsure say N here.
 384
 385 source "kernel/Kconfig.preempt"
 386
 387 config CMDLINE_BOOL
 388         bool "Default bootloader kernel arguments"
 389         depends on SPARC64
 390
 391 config CMDLINE
 392         string "Initial kernel command string"
 393         depends on CMDLINE_BOOL
 394         default "console=ttyS0,9600 root=/dev/sda1"
 395         help
 396           Say Y here if you want to be able to pass default arguments to
 397           the kernel. This will be overridden by the bootloader, if you
 398           use one (such as SILO). This is most useful if you want to boot
 399           a kernel from TFTP, and want default options to be available
 400           with having them passed on the command line.
 401
 402           NOTE: This option WILL override the PROM bootargs setting!
 403
 404 config SUN_PM
 405         bool
 406         default y if SPARC32
 407         help
 408           Enable power management and CPU standby features on supported
 409           SPARC platforms.
 410
 411 config SPARC_LED
 412         tristate "Sun4m LED driver"
 413         depends on SPARC32
 414         help
 415           This driver toggles the front-panel LED on sun4m systems
 416           in a user-specifiable manner.  Its state can be probed
 417           by reading /proc/led and its blinking mode can be changed
 418           via writes to /proc/led
 419
 420 config SERIAL_CONSOLE
 421         bool
 422         depends on SPARC32
 423         default y
 424         ---help---
 425           If you say Y here, it will be possible to use a serial port as the
 426           system console (the system console is the device which receives all
 427           kernel messages and warnings and which allows logins in single user
 428           mode). This could be useful if some terminal or printer is connected
 429           to that serial port.
 430
 431           Even if you say Y here, the currently visible virtual console
 432           (/dev/tty0) will still be used as the system console by default, but
 433           you can alter that using a kernel command line option such as
 434           "console=ttyS1". (Try "man bootparam" or see the documentation of
 435           your boot loader (silo) about how to pass options to the kernel at
 436           boot time.)
 437
 438           If you don't have a graphics card installed and you say Y here, the
 439           kernel will automatically use the first serial line, /dev/ttyS0, as
 440           system console.
 441
 442           If unsure, say N.
 443
 444 config SPARC_LEON
 445         bool "Sparc Leon processor family"
 446         depends on SPARC32
 447         ---help---
 448           If you say Y here if you are running on a SPARC-LEON processor.
 449           The LEON processor is a synthesizable VHDL model of the
 450           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 451           IP cores that are distributed under GPL. GRLIB can be downloaded
 452           from www.gaisler.com. You can download a sparc-linux cross-compilation
 453           toolchain at www.gaisler.com.
 454
 455 if SPARC_LEON
 456 menu "U-Boot options"
 457
 458 config UBOOT_LOAD_ADDR
 459         hex "uImage Load Address"
 460         default 0x40004000
 461         ---help---
 462          U-Boot kernel load address, the address in physical address space
 463          where u-boot will place the Linux kernel before booting it.
 464          This address is normally the base address of main memory + 0x4000.
 465
 466 config UBOOT_FLASH_ADDR
 467         hex "uImage.o Load Address"
 468         default 0x00080000
 469         ---help---
 470          Optional setting only affecting the uImage.o ELF-image used to
 471          download the uImage file to the target using a ELF-loader other than
 472          U-Boot. It may for example be used to download an uImage to FLASH with
 473          the GRMON utility before even starting u-boot.
 474
 475 config UBOOT_ENTRY_ADDR
 476         hex "uImage Entry Address"
 477         default 0xf0004000
 478         ---help---
 479          Do not change this unless you know what you're doing. This is
 480          hardcoded by the SPARC32 and LEON port.
 481
 482          This is the virtual address u-boot jumps to when booting the Linux
 483          Kernel.
 484
 485 endmenu
 486 endif
 487
 488 endmenu
 489
 490 menu "Bus options (PCI etc.)"
 491 config SBUS
 492         bool
 493         default y
 494
 495 config SBUSCHAR
 496         bool
 497         default y
 498
 499 config SUN_LDOMS
 500         bool "Sun Logical Domains support"
 501         depends on SPARC64
 502         help
 503           Say Y here is you want to support virtual devices via
 504           Logical Domains.
 505
 506 config PCI
 507         bool "Support for PCI and PS/2 keyboard/mouse"
 508         help
 509           Find out whether your system includes a PCI bus. PCI is the name of
 510           a bus system, i.e. the way the CPU talks to the other stuff inside
 511           your box.  If you say Y here, the kernel will include drivers and
 512           infrastructure code to support PCI bus devices.
 513
 514           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 515           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 516           All of these platforms are extremely obscure, so say N if unsure.
 517
 518 config PCI_DOMAINS
 519         def_bool PCI if SPARC64
 520
 521 config PCI_SYSCALL
 522         def_bool PCI
 523
 524 config PCIC_PCI
 525         bool
 526         depends on PCI && SPARC32 && !SPARC_LEON
 527         default y
 528
 529 config LEON_PCI
 530         bool
 531         depends on PCI && SPARC_LEON
 532         default y
 533
 534 config GRPCI2
 535         bool "GRPCI2 Host Bridge Support"
 536         depends on LEON_PCI
 537         default y
 538         help
 539           Say Y here to include the GRPCI2 Host Bridge Driver.
 540
 541 source "drivers/pci/Kconfig"
 542
 543 source "drivers/pcmcia/Kconfig"
 544
 545 config SUN_OPENPROMFS
 546         tristate "Openprom tree appears in /proc/openprom"
 547         help
 548           If you say Y, the OpenPROM device tree will be available as a
 549           virtual file system, which you can mount to /proc/openprom by "mount
 550           -t openpromfs none /proc/openprom".
 551
 552           To compile the /proc/openprom support as a module, choose M here: the
 553           module will be called openpromfs.
 554
 555           Only choose N if you know in advance that you will not need to modify
 556           OpenPROM settings on the running system.
 557
 558 # Makefile helper
 559 config SPARC64_PCI
 560         bool
 561         default y
 562         depends on SPARC64 && PCI
 563
 564 endmenu
 565
 566 menu "Executable file formats"
 567
 568 source "fs/Kconfig.binfmt"
 569
 570 config COMPAT
 571         bool
 572         depends on SPARC64
 573         default y
 574         select COMPAT_BINFMT_ELF
 575         select ARCH_WANT_OLD_COMPAT_IPC
 576
 577 config SYSVIPC_COMPAT
 578         bool
 579         depends on COMPAT && SYSVIPC
 580         default y
 581
 582 config KEYS_COMPAT
 583         def_bool y if COMPAT && KEYS
 584
 585 endmenu
 586
 587 source "net/Kconfig"
 588
 589 source "drivers/Kconfig"
 590
 591 source "drivers/sbus/char/Kconfig"
 592
 593 source "fs/Kconfig"
 594
 595 source "arch/sparc/Kconfig.debug"
 596
 597 source "security/Kconfig"
 598
 599 source "crypto/Kconfig"
 600
 601 source "lib/Kconfig"