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
  33 config SPARC32
  34         def_bool !64BIT
  35         select GENERIC_ATOMIC64
  36
  37 config SPARC64
  38         def_bool 64BIT
  39         select ARCH_SUPPORTS_MSI
  40         select HAVE_FUNCTION_TRACER
  41         select HAVE_FUNCTION_GRAPH_TRACER
  42         select HAVE_FUNCTION_GRAPH_FP_TEST
  43         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  44         select HAVE_KRETPROBES
  45         select HAVE_KPROBES
  46         select HAVE_RCU_TABLE_FREE if SMP
  47         select HAVE_MEMBLOCK
  48         select HAVE_MEMBLOCK_NODE_MAP
  49         select HAVE_SYSCALL_WRAPPERS
  50         select HAVE_DYNAMIC_FTRACE
  51         select HAVE_FTRACE_MCOUNT_RECORD
  52         select HAVE_SYSCALL_TRACEPOINTS
  53         select RTC_DRV_CMOS
  54         select RTC_DRV_BQ4802
  55         select RTC_DRV_SUN4V
  56         select RTC_DRV_STARFIRE
  57         select HAVE_PERF_EVENTS
  58         select PERF_USE_VMALLOC
  59         select IRQ_PREFLOW_FASTEOI
  60         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  61         select HAVE_C_RECORDMCOUNT
  62
  63 config ARCH_DEFCONFIG
  64         string
  65         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  66         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  67
  68 # CONFIG_BITS can be used at source level to get 32/64 bits
  69 config BITS
  70         int
  71         default 32 if SPARC32
  72         default 64 if SPARC64
  73
  74 config ARCH_USES_GETTIMEOFFSET
  75         bool
  76         default y if SPARC32
  77
  78 config GENERIC_CMOS_UPDATE
  79         bool
  80         default y
  81
  82 config GENERIC_CLOCKEVENTS
  83         bool
  84         default y 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 (does not work on sun4/sun4c)"
 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 source "kernel/time/Kconfig"
 277
 278 if SPARC64
 279 source "drivers/cpufreq/Kconfig"
 280
 281 config US3_FREQ
 282         tristate "UltraSPARC-III CPU Frequency driver"
 283         depends on CPU_FREQ
 284         select CPU_FREQ_TABLE
 285         help
 286           This adds the CPUFreq driver for UltraSPARC-III processors.
 287
 288           For details, take a look at <file:Documentation/cpu-freq>.
 289
 290           If in doubt, say N.
 291
 292 config US2E_FREQ
 293         tristate "UltraSPARC-IIe CPU Frequency driver"
 294         depends on CPU_FREQ
 295         select CPU_FREQ_TABLE
 296         help
 297           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 298
 299           For details, take a look at <file:Documentation/cpu-freq>.
 300
 301           If in doubt, say N.
 302
 303 endif
 304
 305 config US3_MC
 306         tristate "UltraSPARC-III Memory Controller driver"
 307         depends on SPARC64
 308         default y
 309         help
 310           This adds a driver for the UltraSPARC-III memory controller.
 311           Loading this driver allows exact mnemonic strings to be
 312           printed in the event of a memory error, so that the faulty DIMM
 313           on the motherboard can be matched to the error.
 314
 315           If in doubt, say Y, as this information can be very useful.
 316
 317 # Global things across all Sun machines.
 318 config GENERIC_LOCKBREAK
 319         bool
 320         default y
 321         depends on SPARC64 && SMP && PREEMPT
 322
 323 choice
 324         prompt "SPARC64 Huge TLB Page Size"
 325         depends on SPARC64 && HUGETLB_PAGE
 326         default HUGETLB_PAGE_SIZE_4MB
 327
 328 config HUGETLB_PAGE_SIZE_4MB
 329         bool "4MB"
 330
 331 config HUGETLB_PAGE_SIZE_512K
 332         bool "512K"
 333
 334 config HUGETLB_PAGE_SIZE_64K
 335         depends on !SPARC64_PAGE_SIZE_64KB
 336         bool "64K"
 337
 338 endchoice
 339
 340 config NUMA
 341         bool "NUMA support"
 342         depends on SPARC64 && SMP
 343
 344 config NODES_SHIFT
 345         int
 346         default "4"
 347         depends on NEED_MULTIPLE_NODES
 348
 349 # Some NUMA nodes have memory ranges that span
 350 # other nodes.  Even though a pfn is valid and
 351 # between a node's start and end pfns, it may not
 352 # reside on that node.  See memmap_init_zone()
 353 # for details.
 354 config NODES_SPAN_OTHER_NODES
 355         def_bool y
 356         depends on NEED_MULTIPLE_NODES
 357
 358 config ARCH_SELECT_MEMORY_MODEL
 359         def_bool y if SPARC64
 360
 361 config ARCH_SPARSEMEM_ENABLE
 362         def_bool y if SPARC64
 363         select SPARSEMEM_VMEMMAP_ENABLE
 364
 365 config ARCH_SPARSEMEM_DEFAULT
 366         def_bool y if SPARC64
 367
 368 source "mm/Kconfig"
 369
 370 config SCHED_SMT
 371         bool "SMT (Hyperthreading) scheduler support"
 372         depends on SPARC64 && SMP
 373         default y
 374         help
 375           SMT scheduler support improves the CPU scheduler's decision making
 376           when dealing with SPARC cpus at a cost of slightly increased overhead
 377           in some places. If unsure say N here.
 378
 379 config SCHED_MC
 380         bool "Multi-core scheduler support"
 381         depends on SPARC64 && SMP
 382         default y
 383         help
 384           Multi-core scheduler support improves the CPU scheduler's decision
 385           making when dealing with multi-core CPU chips at a cost of slightly
 386           increased overhead in some places. If unsure say N here.
 387
 388 source "kernel/Kconfig.preempt"
 389
 390 config CMDLINE_BOOL
 391         bool "Default bootloader kernel arguments"
 392         depends on SPARC64
 393
 394 config CMDLINE
 395         string "Initial kernel command string"
 396         depends on CMDLINE_BOOL
 397         default "console=ttyS0,9600 root=/dev/sda1"
 398         help
 399           Say Y here if you want to be able to pass default arguments to
 400           the kernel. This will be overridden by the bootloader, if you
 401           use one (such as SILO). This is most useful if you want to boot
 402           a kernel from TFTP, and want default options to be available
 403           with having them passed on the command line.
 404
 405           NOTE: This option WILL override the PROM bootargs setting!
 406
 407 config SUN_PM
 408         bool
 409         default y if SPARC32
 410         help
 411           Enable power management and CPU standby features on supported
 412           SPARC platforms.
 413
 414 config SPARC_LED
 415         tristate "Sun4m LED driver"
 416         depends on SPARC32
 417         help
 418           This driver toggles the front-panel LED on sun4m systems
 419           in a user-specifiable manner.  Its state can be probed
 420           by reading /proc/led and its blinking mode can be changed
 421           via writes to /proc/led
 422
 423 config SERIAL_CONSOLE
 424         bool
 425         depends on SPARC32
 426         default y
 427         ---help---
 428           If you say Y here, it will be possible to use a serial port as the
 429           system console (the system console is the device which receives all
 430           kernel messages and warnings and which allows logins in single user
 431           mode). This could be useful if some terminal or printer is connected
 432           to that serial port.
 433
 434           Even if you say Y here, the currently visible virtual console
 435           (/dev/tty0) will still be used as the system console by default, but
 436           you can alter that using a kernel command line option such as
 437           "console=ttyS1". (Try "man bootparam" or see the documentation of
 438           your boot loader (silo) about how to pass options to the kernel at
 439           boot time.)
 440
 441           If you don't have a graphics card installed and you say Y here, the
 442           kernel will automatically use the first serial line, /dev/ttyS0, as
 443           system console.
 444
 445           If unsure, say N.
 446
 447 config SPARC_LEON
 448         bool "Sparc Leon processor family"
 449         depends on SPARC32
 450         ---help---
 451           If you say Y here if you are running on a SPARC-LEON processor.
 452           The LEON processor is a synthesizable VHDL model of the
 453           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 454           IP cores that are distributed under GPL. GRLIB can be downloaded
 455           from www.gaisler.com. You can download a sparc-linux cross-compilation
 456           toolchain at www.gaisler.com.
 457
 458 if SPARC_LEON
 459 menu "U-Boot options"
 460
 461 config UBOOT_LOAD_ADDR
 462         hex "uImage Load Address"
 463         default 0x40004000
 464         ---help---
 465          U-Boot kernel load address, the address in physical address space
 466          where u-boot will place the Linux kernel before booting it.
 467          This address is normally the base address of main memory + 0x4000.
 468
 469 config UBOOT_FLASH_ADDR
 470         hex "uImage.o Load Address"
 471         default 0x00080000
 472         ---help---
 473          Optional setting only affecting the uImage.o ELF-image used to
 474          download the uImage file to the target using a ELF-loader other than
 475          U-Boot. It may for example be used to download an uImage to FLASH with
 476          the GRMON utility before even starting u-boot.
 477
 478 config UBOOT_ENTRY_ADDR
 479         hex "uImage Entry Address"
 480         default 0xf0004000
 481         ---help---
 482          Do not change this unless you know what you're doing. This is
 483          hardcoded by the SPARC32 and LEON port.
 484
 485          This is the virtual address u-boot jumps to when booting the Linux
 486          Kernel.
 487
 488 endmenu
 489 endif
 490
 491 endmenu
 492
 493 menu "Bus options (PCI etc.)"
 494 config SBUS
 495         bool
 496         default y
 497
 498 config SBUSCHAR
 499         bool
 500         default y
 501
 502 config SUN_LDOMS
 503         bool "Sun Logical Domains support"
 504         depends on SPARC64
 505         help
 506           Say Y here is you want to support virtual devices via
 507           Logical Domains.
 508
 509 config PCI
 510         bool "Support for PCI and PS/2 keyboard/mouse"
 511         help
 512           Find out whether your system includes a PCI bus. PCI is the name of
 513           a bus system, i.e. the way the CPU talks to the other stuff inside
 514           your box.  If you say Y here, the kernel will include drivers and
 515           infrastructure code to support PCI bus devices.
 516
 517           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 518           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 519           All of these platforms are extremely obscure, so say N if unsure.
 520
 521 config PCI_DOMAINS
 522         def_bool PCI if SPARC64
 523
 524 config PCI_SYSCALL
 525         def_bool PCI
 526
 527 config PCIC_PCI
 528         bool
 529         depends on PCI && SPARC32 && !SPARC_LEON
 530         default y
 531
 532 config LEON_PCI
 533         bool
 534         depends on PCI && SPARC_LEON
 535         default y
 536
 537 config GRPCI2
 538         bool "GRPCI2 Host Bridge Support"
 539         depends on LEON_PCI
 540         default y
 541         help
 542           Say Y here to include the GRPCI2 Host Bridge Driver.
 543
 544 source "drivers/pci/Kconfig"
 545
 546 source "drivers/pcmcia/Kconfig"
 547
 548 config SUN_OPENPROMFS
 549         tristate "Openprom tree appears in /proc/openprom"
 550         help
 551           If you say Y, the OpenPROM device tree will be available as a
 552           virtual file system, which you can mount to /proc/openprom by "mount
 553           -t openpromfs none /proc/openprom".
 554
 555           To compile the /proc/openprom support as a module, choose M here: the
 556           module will be called openpromfs.
 557
 558           Only choose N if you know in advance that you will not need to modify
 559           OpenPROM settings on the running system.
 560
 561 # Makefile helper
 562 config SPARC64_PCI
 563         bool
 564         default y
 565         depends on SPARC64 && PCI
 566
 567 endmenu
 568
 569 menu "Executable file formats"
 570
 571 source "fs/Kconfig.binfmt"
 572
 573 config COMPAT
 574         bool
 575         depends on SPARC64
 576         default y
 577         select COMPAT_BINFMT_ELF
 578
 579 config SYSVIPC_COMPAT
 580         bool
 581         depends on COMPAT && SYSVIPC
 582         default y
 583
 584 endmenu
 585
 586 source "net/Kconfig"
 587
 588 source "drivers/Kconfig"
 589
 590 source "drivers/sbus/char/Kconfig"
 591
 592 source "fs/Kconfig"
 593
 594 source "arch/sparc/Kconfig.debug"
 595
 596 source "security/Kconfig"
 597
 598 source "crypto/Kconfig"
 599
 600 source "lib/Kconfig"