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 ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
  16         select ARCH_MIGHT_HAVE_PC_SERIO
  17         select OF
  18         select OF_PROMTREE
  19         select HAVE_IDE
  20         select HAVE_OPROFILE
  21         select HAVE_ARCH_KGDB if !SMP || SPARC64
  22         select HAVE_ARCH_TRACEHOOK
  23         select HAVE_EXIT_THREAD
  24         select SYSCTL_EXCEPTION_TRACE
  25         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  26         select RTC_CLASS
  27         select RTC_DRV_M48T59
  28         select RTC_SYSTOHC
  29         select HAVE_DMA_API_DEBUG
  30         select HAVE_ARCH_JUMP_LABEL if SPARC64
  31         select GENERIC_IRQ_SHOW
  32         select ARCH_WANT_IPC_PARSE_VERSION
  33         select GENERIC_PCI_IOMAP
  34         select HAVE_NMI_WATCHDOG if SPARC64
  35         select HAVE_CBPF_JIT
  36         select HAVE_DEBUG_BUGVERBOSE
  37         select GENERIC_SMP_IDLE_THREAD
  38         select GENERIC_CLOCKEVENTS
  39         select GENERIC_STRNCPY_FROM_USER
  40         select GENERIC_STRNLEN_USER
  41         select MODULES_USE_ELF_RELA
  42         select ODD_RT_SIGACTION
  43         select OLD_SIGSUSPEND
  44         select ARCH_HAS_SG_CHAIN
  45         select CPU_NO_EFFICIENT_FFS
  46
  47 config SPARC32
  48         def_bool !64BIT
  49         select GENERIC_ATOMIC64
  50         select CLZ_TAB
  51         select HAVE_UID16
  52         select OLD_SIGACTION
  53
  54 config SPARC64
  55         def_bool 64BIT
  56         select HAVE_FUNCTION_TRACER
  57         select HAVE_FUNCTION_GRAPH_TRACER
  58         select HAVE_FUNCTION_GRAPH_FP_TEST
  59         select HAVE_KRETPROBES
  60         select HAVE_KPROBES
  61         select HAVE_RCU_TABLE_FREE if SMP
  62         select HAVE_MEMBLOCK
  63         select HAVE_MEMBLOCK_NODE_MAP
  64         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  65         select HAVE_DYNAMIC_FTRACE
  66         select HAVE_FTRACE_MCOUNT_RECORD
  67         select HAVE_SYSCALL_TRACEPOINTS
  68         select HAVE_CONTEXT_TRACKING
  69         select HAVE_DEBUG_KMEMLEAK
  70         select SPARSE_IRQ
  71         select RTC_DRV_CMOS
  72         select RTC_DRV_BQ4802
  73         select RTC_DRV_SUN4V
  74         select RTC_DRV_STARFIRE
  75         select HAVE_PERF_EVENTS
  76         select PERF_USE_VMALLOC
  77         select IRQ_PREFLOW_FASTEOI
  78         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  79         select HAVE_C_RECORDMCOUNT
  80         select NO_BOOTMEM
  81         select HAVE_ARCH_AUDITSYSCALL
  82         select ARCH_SUPPORTS_ATOMIC_RMW
  83         select HAVE_NMI
  84
  85 config ARCH_DEFCONFIG
  86         string
  87         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  88         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  89
  90 config ARCH_PROC_KCORE_TEXT
  91         def_bool y
  92
  93 config IOMMU_HELPER
  94         bool
  95         default y if SPARC64
  96
  97 config STACKTRACE_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config LOCKDEP_SUPPORT
 102         bool
 103         default y if SPARC64
 104
 105 config ARCH_HIBERNATION_POSSIBLE
 106         def_bool y if SPARC64
 107
 108 config AUDIT_ARCH
 109         bool
 110         default y
 111
 112 config HAVE_SETUP_PER_CPU_AREA
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 119         def_bool y if SPARC64
 120
 121 config MMU
 122         bool
 123         default y
 124
 125 config HIGHMEM
 126         bool
 127         default y if SPARC32
 128
 129 config ZONE_DMA
 130         bool
 131         default y if SPARC32
 132
 133 config NEED_DMA_MAP_STATE
 134         def_bool y
 135
 136 config NEED_SG_DMA_LENGTH
 137         def_bool y
 138
 139 config GENERIC_ISA_DMA
 140         bool
 141         default y if SPARC32
 142
 143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 144         def_bool y if SPARC64
 145
 146 config PGTABLE_LEVELS
 147         default 4 if 64BIT
 148         default 3
 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"
 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 uni- 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           uniprocessor machines. On a uniprocessor 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
 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 config SECCOMP
 234         bool "Enable seccomp to safely compute untrusted bytecode"
 235         depends on SPARC64 && PROC_FS
 236         default y
 237         help
 238           This kernel feature is useful for number crunching applications
 239           that may need to compute untrusted bytecode during their
 240           execution. By using pipes or other transports made available to
 241           the process as file descriptors supporting the read/write
 242           syscalls, it's possible to isolate those applications in
 243           their own address space using seccomp. Once seccomp is
 244           enabled via /proc/<pid>/seccomp, it cannot be disabled
 245           and the task is only allowed to execute a few safe syscalls
 246           defined by each seccomp mode.
 247
 248           If unsure, say Y. Only embedded should say N here.
 249
 250 config HOTPLUG_CPU
 251         bool "Support for hot-pluggable CPUs"
 252         depends on SPARC64 && SMP
 253         help
 254           Say Y here to experiment with turning CPUs off and on.  CPUs
 255           can be controlled through /sys/devices/system/cpu/cpu#.
 256           Say N if you want to disable CPU hotplug.
 257
 258 if SPARC64
 259 source "drivers/cpufreq/Kconfig"
 260 endif
 261
 262 config US3_MC
 263         tristate "UltraSPARC-III Memory Controller driver"
 264         depends on SPARC64
 265         default y
 266         help
 267           This adds a driver for the UltraSPARC-III memory controller.
 268           Loading this driver allows exact mnemonic strings to be
 269           printed in the event of a memory error, so that the faulty DIMM
 270           on the motherboard can be matched to the error.
 271
 272           If in doubt, say Y, as this information can be very useful.
 273
 274 # Global things across all Sun machines.
 275 config GENERIC_LOCKBREAK
 276         bool
 277         default y
 278         depends on SPARC64 && SMP && PREEMPT
 279
 280 config NUMA
 281         bool "NUMA support"
 282         depends on SPARC64 && SMP
 283
 284 config NODES_SHIFT
 285         int
 286         default "4"
 287         depends on NEED_MULTIPLE_NODES
 288
 289 # Some NUMA nodes have memory ranges that span
 290 # other nodes.  Even though a pfn is valid and
 291 # between a node's start and end pfns, it may not
 292 # reside on that node.  See memmap_init_zone()
 293 # for details.
 294 config NODES_SPAN_OTHER_NODES
 295         def_bool y
 296         depends on NEED_MULTIPLE_NODES
 297
 298 config ARCH_SELECT_MEMORY_MODEL
 299         def_bool y if SPARC64
 300
 301 config ARCH_SPARSEMEM_ENABLE
 302         def_bool y if SPARC64
 303         select SPARSEMEM_VMEMMAP_ENABLE
 304
 305 config ARCH_SPARSEMEM_DEFAULT
 306         def_bool y if SPARC64
 307
 308 source "mm/Kconfig"
 309
 310 if SPARC64
 311 source "kernel/power/Kconfig"
 312 endif
 313
 314 config SCHED_SMT
 315         bool "SMT (Hyperthreading) scheduler support"
 316         depends on SPARC64 && SMP
 317         default y
 318         help
 319           SMT scheduler support improves the CPU scheduler's decision making
 320           when dealing with SPARC cpus at a cost of slightly increased overhead
 321           in some places. If unsure say N here.
 322
 323 config SCHED_MC
 324         bool "Multi-core scheduler support"
 325         depends on SPARC64 && SMP
 326         default y
 327         help
 328           Multi-core scheduler support improves the CPU scheduler's decision
 329           making when dealing with multi-core CPU chips at a cost of slightly
 330           increased overhead in some places. If unsure say N here.
 331
 332 source "kernel/Kconfig.preempt"
 333
 334 config CMDLINE_BOOL
 335         bool "Default bootloader kernel arguments"
 336         depends on SPARC64
 337
 338 config CMDLINE
 339         string "Initial kernel command string"
 340         depends on CMDLINE_BOOL
 341         default "console=ttyS0,9600 root=/dev/sda1"
 342         help
 343           Say Y here if you want to be able to pass default arguments to
 344           the kernel. This will be overridden by the bootloader, if you
 345           use one (such as SILO). This is most useful if you want to boot
 346           a kernel from TFTP, and want default options to be available
 347           with having them passed on the command line.
 348
 349           NOTE: This option WILL override the PROM bootargs setting!
 350
 351 config SUN_PM
 352         bool
 353         default y if SPARC32
 354         help
 355           Enable power management and CPU standby features on supported
 356           SPARC platforms.
 357
 358 config SPARC_LED
 359         tristate "Sun4m LED driver"
 360         depends on SPARC32
 361         help
 362           This driver toggles the front-panel LED on sun4m systems
 363           in a user-specifiable manner.  Its state can be probed
 364           by reading /proc/led and its blinking mode can be changed
 365           via writes to /proc/led
 366
 367 config SERIAL_CONSOLE
 368         bool
 369         depends on SPARC32
 370         default y
 371         ---help---
 372           If you say Y here, it will be possible to use a serial port as the
 373           system console (the system console is the device which receives all
 374           kernel messages and warnings and which allows logins in single user
 375           mode). This could be useful if some terminal or printer is connected
 376           to that serial port.
 377
 378           Even if you say Y here, the currently visible virtual console
 379           (/dev/tty0) will still be used as the system console by default, but
 380           you can alter that using a kernel command line option such as
 381           "console=ttyS1". (Try "man bootparam" or see the documentation of
 382           your boot loader (silo) about how to pass options to the kernel at
 383           boot time.)
 384
 385           If you don't have a graphics card installed and you say Y here, the
 386           kernel will automatically use the first serial line, /dev/ttyS0, as
 387           system console.
 388
 389           If unsure, say N.
 390
 391 config SPARC_LEON
 392         bool "Sparc Leon processor family"
 393         depends on SPARC32
 394         select USB_EHCI_BIG_ENDIAN_MMIO
 395         select USB_EHCI_BIG_ENDIAN_DESC
 396         ---help---
 397           If you say Y here if you are running on a SPARC-LEON processor.
 398           The LEON processor is a synthesizable VHDL model of the
 399           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 400           IP cores that are distributed under GPL. GRLIB can be downloaded
 401           from www.gaisler.com. You can download a sparc-linux cross-compilation
 402           toolchain at www.gaisler.com.
 403
 404 if SPARC_LEON
 405 menu "U-Boot options"
 406
 407 config UBOOT_LOAD_ADDR
 408         hex "uImage Load Address"
 409         default 0x40004000
 410         ---help---
 411          U-Boot kernel load address, the address in physical address space
 412          where u-boot will place the Linux kernel before booting it.
 413          This address is normally the base address of main memory + 0x4000.
 414
 415 config UBOOT_FLASH_ADDR
 416         hex "uImage.o Load Address"
 417         default 0x00080000
 418         ---help---
 419          Optional setting only affecting the uImage.o ELF-image used to
 420          download the uImage file to the target using a ELF-loader other than
 421          U-Boot. It may for example be used to download an uImage to FLASH with
 422          the GRMON utility before even starting u-boot.
 423
 424 config UBOOT_ENTRY_ADDR
 425         hex "uImage Entry Address"
 426         default 0xf0004000
 427         ---help---
 428          Do not change this unless you know what you're doing. This is
 429          hardcoded by the SPARC32 and LEON port.
 430
 431          This is the virtual address u-boot jumps to when booting the Linux
 432          Kernel.
 433
 434 endmenu
 435 endif
 436
 437 endmenu
 438
 439 menu "Bus options (PCI etc.)"
 440 config SBUS
 441         bool
 442         default y
 443
 444 config SBUSCHAR
 445         bool
 446         default y
 447
 448 config SUN_LDOMS
 449         bool "Sun Logical Domains support"
 450         depends on SPARC64
 451         help
 452           Say Y here is you want to support virtual devices via
 453           Logical Domains.
 454
 455 config PCI
 456         bool "Support for PCI and PS/2 keyboard/mouse"
 457         help
 458           Find out whether your system includes a PCI bus. PCI is the name of
 459           a bus system, i.e. the way the CPU talks to the other stuff inside
 460           your box.  If you say Y here, the kernel will include drivers and
 461           infrastructure code to support PCI bus devices.
 462
 463           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 464           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 465           All of these platforms are extremely obscure, so say N if unsure.
 466
 467 config PCI_DOMAINS
 468         def_bool PCI if SPARC64
 469
 470 config PCI_SYSCALL
 471         def_bool PCI
 472
 473 config PCIC_PCI
 474         bool
 475         depends on PCI && SPARC32 && !SPARC_LEON
 476         default y
 477
 478 config LEON_PCI
 479         bool
 480         depends on PCI && SPARC_LEON
 481         default y
 482
 483 config SPARC_GRPCI1
 484         bool "GRPCI Host Bridge Support"
 485         depends on LEON_PCI
 486         default y
 487         help
 488           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 489           PCI host controller is typically found in GRLIB SPARC32/LEON
 490           systems. The driver has one property (all_pci_errors) controlled
 491           from the bootloader that makes the GRPCI to generate interrupts
 492           on detected PCI Parity and System errors.
 493
 494 config SPARC_GRPCI2
 495         bool "GRPCI2 Host Bridge Support"
 496         depends on LEON_PCI
 497         default y
 498         help
 499           Say Y here to include the GRPCI2 Host Bridge Driver.
 500
 501 source "drivers/pci/Kconfig"
 502
 503 source "drivers/pcmcia/Kconfig"
 504
 505 config SUN_OPENPROMFS
 506         tristate "Openprom tree appears in /proc/openprom"
 507         help
 508           If you say Y, the OpenPROM device tree will be available as a
 509           virtual file system, which you can mount to /proc/openprom by "mount
 510           -t openpromfs none /proc/openprom".
 511
 512           To compile the /proc/openprom support as a module, choose M here: the
 513           module will be called openpromfs.
 514
 515           Only choose N if you know in advance that you will not need to modify
 516           OpenPROM settings on the running system.
 517
 518 # Makefile helpers
 519 config SPARC64_PCI
 520         bool
 521         default y
 522         depends on SPARC64 && PCI
 523
 524 config SPARC64_PCI_MSI
 525         bool
 526         default y
 527         depends on SPARC64_PCI && PCI_MSI
 528
 529 endmenu
 530
 531 menu "Executable file formats"
 532
 533 source "fs/Kconfig.binfmt"
 534
 535 config COMPAT
 536         bool
 537         depends on SPARC64
 538         default y
 539         select COMPAT_BINFMT_ELF
 540         select HAVE_UID16
 541         select ARCH_WANT_OLD_COMPAT_IPC
 542         select COMPAT_OLD_SIGACTION
 543
 544 config SYSVIPC_COMPAT
 545         bool
 546         depends on COMPAT && SYSVIPC
 547         default y
 548
 549 config KEYS_COMPAT
 550         def_bool y if COMPAT && KEYS
 551
 552 endmenu
 553
 554 source "net/Kconfig"
 555
 556 source "drivers/Kconfig"
 557
 558 source "drivers/sbus/char/Kconfig"
 559
 560 source "fs/Kconfig"
 561
 562 source "arch/sparc/Kconfig.debug"
 563
 564 source "security/Kconfig"
 565
 566 source "crypto/Kconfig"
 567
 568 source "lib/Kconfig"