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
  46 config SPARC64
  47         def_bool 64BIT
  48         select ARCH_SUPPORTS_MSI
  49         select HAVE_FUNCTION_TRACER
  50         select HAVE_FUNCTION_GRAPH_TRACER
  51         select HAVE_FUNCTION_GRAPH_FP_TEST
  52         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  53         select HAVE_KRETPROBES
  54         select HAVE_KPROBES
  55         select HAVE_RCU_TABLE_FREE if SMP
  56         select HAVE_MEMBLOCK
  57         select HAVE_MEMBLOCK_NODE_MAP
  58         select HAVE_SYSCALL_WRAPPERS
  59         select HAVE_DYNAMIC_FTRACE
  60         select HAVE_FTRACE_MCOUNT_RECORD
  61         select HAVE_SYSCALL_TRACEPOINTS
  62         select RTC_DRV_CMOS
  63         select RTC_DRV_BQ4802
  64         select RTC_DRV_SUN4V
  65         select RTC_DRV_STARFIRE
  66         select HAVE_PERF_EVENTS
  67         select PERF_USE_VMALLOC
  68         select IRQ_PREFLOW_FASTEOI
  69         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  70         select HAVE_C_RECORDMCOUNT
  71         select NO_BOOTMEM
  72
  73 config ARCH_DEFCONFIG
  74         string
  75         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  76         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  77
  78 # CONFIG_BITS can be used at source level to get 32/64 bits
  79 config BITS
  80         int
  81         default 32 if SPARC32
  82         default 64 if SPARC64
  83
  84 config IOMMU_HELPER
  85         bool
  86         default y if SPARC64
  87
  88 config STACKTRACE_SUPPORT
  89         bool
  90         default y if SPARC64
  91
  92 config LOCKDEP_SUPPORT
  93         bool
  94         default y if SPARC64
  95
  96 config HAVE_LATENCYTOP_SUPPORT
  97         bool
  98         default y if SPARC64
  99
 100 config AUDIT_ARCH
 101         bool
 102         default y
 103
 104 config HAVE_SETUP_PER_CPU_AREA
 105         def_bool y if SPARC64
 106
 107 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 108         def_bool y if SPARC64
 109
 110 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 111         def_bool y if SPARC64
 112
 113 config MMU
 114         bool
 115         default y
 116
 117 config HIGHMEM
 118         bool
 119         default y if SPARC32
 120
 121 config ZONE_DMA
 122         bool
 123         default y if SPARC32
 124
 125 config NEED_DMA_MAP_STATE
 126         def_bool y
 127
 128 config NEED_SG_DMA_LENGTH
 129         def_bool y
 130
 131 config GENERIC_ISA_DMA
 132         bool
 133         default y if SPARC32
 134
 135 config GENERIC_GPIO
 136         bool
 137         help
 138           Generic GPIO API support
 139
 140 config ARCH_NO_VIRT_TO_BUS
 141         def_bool y
 142
 143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 144         def_bool y if SPARC64
 145
 146 source "init/Kconfig"
 147
 148 source "kernel/Kconfig.freezer"
 149
 150 menu "Processor type and features"
 151
 152 config SMP
 153         bool "Symmetric multi-processing support"
 154         ---help---
 155           This enables support for systems with more than one CPU. If you have
 156           a system with only one CPU, say N. If you have a system with more
 157           than one CPU, say Y.
 158
 159           If you say N here, the kernel will run on single and multiprocessor
 160           machines, but will use only one CPU of a multiprocessor machine. If
 161           you say Y here, the kernel will run on many, but not all,
 162           singleprocessor machines. On a singleprocessor machine, the kernel
 163           will run faster if you say N here.
 164
 165           People using multiprocessor machines who say Y here should also say
 166           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 167           Management" code will be disabled if you say Y here.
 168
 169           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 170           available at <http://www.tldp.org/docs.html#howto>.
 171
 172           If you don't know what to do here, say N.
 173
 174 config NR_CPUS
 175         int "Maximum number of CPUs"
 176         depends on SMP
 177         range 2 32 if SPARC32
 178         range 2 1024 if SPARC64
 179         default 32 if SPARC32
 180         default 64 if SPARC64
 181
 182 source kernel/Kconfig.hz
 183
 184 config RWSEM_GENERIC_SPINLOCK
 185         bool
 186         default y if SPARC32
 187
 188 config RWSEM_XCHGADD_ALGORITHM
 189         bool
 190         default y if SPARC64
 191
 192 config GENERIC_HWEIGHT
 193         bool
 194         default y if !ULTRA_HAS_POPULATION_COUNT
 195
 196 config GENERIC_CALIBRATE_DELAY
 197         bool
 198         default y
 199
 200 config ARCH_MAY_HAVE_PC_FDC
 201         bool
 202         default y
 203
 204 config EMULATED_CMPXCHG
 205         bool
 206         default y if SPARC32
 207         help
 208           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 209           is emulated, and therefore it is not completely atomic.
 210
 211 # Makefile helpers
 212 config SPARC32_SMP
 213         bool
 214         default y
 215         depends on SPARC32 && SMP
 216
 217 config SPARC64_SMP
 218         bool
 219         default y
 220         depends on SPARC64 && SMP
 221
 222 config EARLYFB
 223         bool "Support for early boot text console"
 224         default y
 225         depends on SPARC64
 226         help
 227           Say Y here to enable a faster early framebuffer boot console.
 228
 229 choice
 230         prompt "Kernel page size" if SPARC64
 231         default SPARC64_PAGE_SIZE_8KB
 232
 233 config SPARC64_PAGE_SIZE_8KB
 234         bool "8KB"
 235         help
 236           This lets you select the page size of the kernel.
 237
 238           8KB and 64KB work quite well, since SPARC ELF sections
 239           provide for up to 64KB alignment.
 240
 241           If you don't know what to do, choose 8KB.
 242
 243 config SPARC64_PAGE_SIZE_64KB
 244         bool "64KB"
 245
 246 endchoice
 247
 248 config SECCOMP
 249         bool "Enable seccomp to safely compute untrusted bytecode"
 250         depends on SPARC64 && PROC_FS
 251         default y
 252         help
 253           This kernel feature is useful for number crunching applications
 254           that may need to compute untrusted bytecode during their
 255           execution. By using pipes or other transports made available to
 256           the process as file descriptors supporting the read/write
 257           syscalls, it's possible to isolate those applications in
 258           their own address space using seccomp. Once seccomp is
 259           enabled via /proc/<pid>/seccomp, it cannot be disabled
 260           and the task is only allowed to execute a few safe syscalls
 261           defined by each seccomp mode.
 262
 263           If unsure, say Y. Only embedded should say N here.
 264
 265 config HOTPLUG_CPU
 266         bool "Support for hot-pluggable CPUs"
 267         depends on SPARC64 && SMP
 268         select HOTPLUG
 269         help
 270           Say Y here to experiment with turning CPUs off and on.  CPUs
 271           can be controlled through /sys/devices/system/cpu/cpu#.
 272           Say N if you want to disable CPU hotplug.
 273
 274 if SPARC64
 275 source "drivers/cpufreq/Kconfig"
 276
 277 config US3_FREQ
 278         tristate "UltraSPARC-III CPU Frequency driver"
 279         depends on CPU_FREQ
 280         select CPU_FREQ_TABLE
 281         help
 282           This adds the CPUFreq driver for UltraSPARC-III processors.
 283
 284           For details, take a look at <file:Documentation/cpu-freq>.
 285
 286           If in doubt, say N.
 287
 288 config US2E_FREQ
 289         tristate "UltraSPARC-IIe CPU Frequency driver"
 290         depends on CPU_FREQ
 291         select CPU_FREQ_TABLE
 292         help
 293           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 294
 295           For details, take a look at <file:Documentation/cpu-freq>.
 296
 297           If in doubt, say N.
 298
 299 endif
 300
 301 config US3_MC
 302         tristate "UltraSPARC-III Memory Controller driver"
 303         depends on SPARC64
 304         default y
 305         help
 306           This adds a driver for the UltraSPARC-III memory controller.
 307           Loading this driver allows exact mnemonic strings to be
 308           printed in the event of a memory error, so that the faulty DIMM
 309           on the motherboard can be matched to the error.
 310
 311           If in doubt, say Y, as this information can be very useful.
 312
 313 # Global things across all Sun machines.
 314 config GENERIC_LOCKBREAK
 315         bool
 316         default y
 317         depends on SPARC64 && SMP && PREEMPT
 318
 319 choice
 320         prompt "SPARC64 Huge TLB Page Size"
 321         depends on SPARC64 && HUGETLB_PAGE
 322         default HUGETLB_PAGE_SIZE_4MB
 323
 324 config HUGETLB_PAGE_SIZE_4MB
 325         bool "4MB"
 326
 327 config HUGETLB_PAGE_SIZE_512K
 328         bool "512K"
 329
 330 config HUGETLB_PAGE_SIZE_64K
 331         depends on !SPARC64_PAGE_SIZE_64KB
 332         bool "64K"
 333
 334 endchoice
 335
 336 config NUMA
 337         bool "NUMA support"
 338         depends on SPARC64 && SMP
 339
 340 config NODES_SHIFT
 341         int
 342         default "4"
 343         depends on NEED_MULTIPLE_NODES
 344
 345 # Some NUMA nodes have memory ranges that span
 346 # other nodes.  Even though a pfn is valid and
 347 # between a node's start and end pfns, it may not
 348 # reside on that node.  See memmap_init_zone()
 349 # for details.
 350 config NODES_SPAN_OTHER_NODES
 351         def_bool y
 352         depends on NEED_MULTIPLE_NODES
 353
 354 config ARCH_SELECT_MEMORY_MODEL
 355         def_bool y if SPARC64
 356
 357 config ARCH_SPARSEMEM_ENABLE
 358         def_bool y if SPARC64
 359         select SPARSEMEM_VMEMMAP_ENABLE
 360
 361 config ARCH_SPARSEMEM_DEFAULT
 362         def_bool y if SPARC64
 363
 364 source "mm/Kconfig"
 365
 366 config SCHED_SMT
 367         bool "SMT (Hyperthreading) scheduler support"
 368         depends on SPARC64 && SMP
 369         default y
 370         help
 371           SMT scheduler support improves the CPU scheduler's decision making
 372           when dealing with SPARC cpus at a cost of slightly increased overhead
 373           in some places. If unsure say N here.
 374
 375 config SCHED_MC
 376         bool "Multi-core scheduler support"
 377         depends on SPARC64 && SMP
 378         default y
 379         help
 380           Multi-core scheduler support improves the CPU scheduler's decision
 381           making when dealing with multi-core CPU chips at a cost of slightly
 382           increased overhead in some places. If unsure say N here.
 383
 384 source "kernel/Kconfig.preempt"
 385
 386 config CMDLINE_BOOL
 387         bool "Default bootloader kernel arguments"
 388         depends on SPARC64
 389
 390 config CMDLINE
 391         string "Initial kernel command string"
 392         depends on CMDLINE_BOOL
 393         default "console=ttyS0,9600 root=/dev/sda1"
 394         help
 395           Say Y here if you want to be able to pass default arguments to
 396           the kernel. This will be overridden by the bootloader, if you
 397           use one (such as SILO). This is most useful if you want to boot
 398           a kernel from TFTP, and want default options to be available
 399           with having them passed on the command line.
 400
 401           NOTE: This option WILL override the PROM bootargs setting!
 402
 403 config SUN_PM
 404         bool
 405         default y if SPARC32
 406         help
 407           Enable power management and CPU standby features on supported
 408           SPARC platforms.
 409
 410 config SPARC_LED
 411         tristate "Sun4m LED driver"
 412         depends on SPARC32
 413         help
 414           This driver toggles the front-panel LED on sun4m systems
 415           in a user-specifiable manner.  Its state can be probed
 416           by reading /proc/led and its blinking mode can be changed
 417           via writes to /proc/led
 418
 419 config SERIAL_CONSOLE
 420         bool
 421         depends on SPARC32
 422         default y
 423         ---help---
 424           If you say Y here, it will be possible to use a serial port as the
 425           system console (the system console is the device which receives all
 426           kernel messages and warnings and which allows logins in single user
 427           mode). This could be useful if some terminal or printer is connected
 428           to that serial port.
 429
 430           Even if you say Y here, the currently visible virtual console
 431           (/dev/tty0) will still be used as the system console by default, but
 432           you can alter that using a kernel command line option such as
 433           "console=ttyS1". (Try "man bootparam" or see the documentation of
 434           your boot loader (silo) about how to pass options to the kernel at
 435           boot time.)
 436
 437           If you don't have a graphics card installed and you say Y here, the
 438           kernel will automatically use the first serial line, /dev/ttyS0, as
 439           system console.
 440
 441           If unsure, say N.
 442
 443 config SPARC_LEON
 444         bool "Sparc Leon processor family"
 445         depends on SPARC32
 446         ---help---
 447           If you say Y here if you are running on a SPARC-LEON processor.
 448           The LEON processor is a synthesizable VHDL model of the
 449           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 450           IP cores that are distributed under GPL. GRLIB can be downloaded
 451           from www.gaisler.com. You can download a sparc-linux cross-compilation
 452           toolchain at www.gaisler.com.
 453
 454 if SPARC_LEON
 455 menu "U-Boot options"
 456
 457 config UBOOT_LOAD_ADDR
 458         hex "uImage Load Address"
 459         default 0x40004000
 460         ---help---
 461          U-Boot kernel load address, the address in physical address space
 462          where u-boot will place the Linux kernel before booting it.
 463          This address is normally the base address of main memory + 0x4000.
 464
 465 config UBOOT_FLASH_ADDR
 466         hex "uImage.o Load Address"
 467         default 0x00080000
 468         ---help---
 469          Optional setting only affecting the uImage.o ELF-image used to
 470          download the uImage file to the target using a ELF-loader other than
 471          U-Boot. It may for example be used to download an uImage to FLASH with
 472          the GRMON utility before even starting u-boot.
 473
 474 config UBOOT_ENTRY_ADDR
 475         hex "uImage Entry Address"
 476         default 0xf0004000
 477         ---help---
 478          Do not change this unless you know what you're doing. This is
 479          hardcoded by the SPARC32 and LEON port.
 480
 481          This is the virtual address u-boot jumps to when booting the Linux
 482          Kernel.
 483
 484 endmenu
 485 endif
 486
 487 endmenu
 488
 489 menu "Bus options (PCI etc.)"
 490 config SBUS
 491         bool
 492         default y
 493
 494 config SBUSCHAR
 495         bool
 496         default y
 497
 498 config SUN_LDOMS
 499         bool "Sun Logical Domains support"
 500         depends on SPARC64
 501         help
 502           Say Y here is you want to support virtual devices via
 503           Logical Domains.
 504
 505 config PCI
 506         bool "Support for PCI and PS/2 keyboard/mouse"
 507         help
 508           Find out whether your system includes a PCI bus. PCI is the name of
 509           a bus system, i.e. the way the CPU talks to the other stuff inside
 510           your box.  If you say Y here, the kernel will include drivers and
 511           infrastructure code to support PCI bus devices.
 512
 513           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 514           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 515           All of these platforms are extremely obscure, so say N if unsure.
 516
 517 config PCI_DOMAINS
 518         def_bool PCI if SPARC64
 519
 520 config PCI_SYSCALL
 521         def_bool PCI
 522
 523 config PCIC_PCI
 524         bool
 525         depends on PCI && SPARC32 && !SPARC_LEON
 526         default y
 527
 528 config LEON_PCI
 529         bool
 530         depends on PCI && SPARC_LEON
 531         default y
 532
 533 config GRPCI2
 534         bool "GRPCI2 Host Bridge Support"
 535         depends on LEON_PCI
 536         default y
 537         help
 538           Say Y here to include the GRPCI2 Host Bridge Driver.
 539
 540 source "drivers/pci/Kconfig"
 541
 542 source "drivers/pcmcia/Kconfig"
 543
 544 config SUN_OPENPROMFS
 545         tristate "Openprom tree appears in /proc/openprom"
 546         help
 547           If you say Y, the OpenPROM device tree will be available as a
 548           virtual file system, which you can mount to /proc/openprom by "mount
 549           -t openpromfs none /proc/openprom".
 550
 551           To compile the /proc/openprom support as a module, choose M here: the
 552           module will be called openpromfs.
 553
 554           Only choose N if you know in advance that you will not need to modify
 555           OpenPROM settings on the running system.
 556
 557 # Makefile helper
 558 config SPARC64_PCI
 559         bool
 560         default y
 561         depends on SPARC64 && PCI
 562
 563 endmenu
 564
 565 menu "Executable file formats"
 566
 567 source "fs/Kconfig.binfmt"
 568
 569 config COMPAT
 570         bool
 571         depends on SPARC64
 572         default y
 573         select COMPAT_BINFMT_ELF
 574         select ARCH_WANT_OLD_COMPAT_IPC
 575
 576 config SYSVIPC_COMPAT
 577         bool
 578         depends on COMPAT && SYSVIPC
 579         default y
 580
 581 config KEYS_COMPAT
 582         def_bool y if COMPAT && KEYS
 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"