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 SYSCTL_EXCEPTION_TRACE
  22         select ARCH_WANT_OPTIONAL_GPIOLIB
  23         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  24         select RTC_CLASS
  25         select RTC_DRV_M48T59
  26         select HAVE_DMA_ATTRS
  27         select HAVE_DMA_API_DEBUG
  28         select HAVE_ARCH_JUMP_LABEL
  29         select GENERIC_IRQ_SHOW
  30         select ARCH_WANT_IPC_PARSE_VERSION
  31         select GENERIC_PCI_IOMAP
  32         select HAVE_NMI_WATCHDOG if SPARC64
  33         select HAVE_BPF_JIT
  34         select HAVE_DEBUG_BUGVERBOSE
  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         select ODD_RT_SIGACTION
  42         select OLD_SIGSUSPEND
  43
  44 config SPARC32
  45         def_bool !64BIT
  46         select GENERIC_ATOMIC64
  47         select CLZ_TAB
  48         select HAVE_UID16
  49         select OLD_SIGACTION
  50
  51 config SPARC64
  52         def_bool 64BIT
  53         select HAVE_FUNCTION_TRACER
  54         select HAVE_FUNCTION_GRAPH_TRACER
  55         select HAVE_FUNCTION_GRAPH_FP_TEST
  56         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  57         select HAVE_KRETPROBES
  58         select HAVE_KPROBES
  59         select HAVE_RCU_TABLE_FREE if SMP
  60         select HAVE_MEMBLOCK
  61         select HAVE_MEMBLOCK_NODE_MAP
  62         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  63         select HAVE_DYNAMIC_FTRACE
  64         select HAVE_FTRACE_MCOUNT_RECORD
  65         select HAVE_SYSCALL_TRACEPOINTS
  66         select HAVE_DEBUG_KMEMLEAK
  67         select RTC_DRV_CMOS
  68         select RTC_DRV_BQ4802
  69         select RTC_DRV_SUN4V
  70         select RTC_DRV_STARFIRE
  71         select HAVE_PERF_EVENTS
  72         select PERF_USE_VMALLOC
  73         select IRQ_PREFLOW_FASTEOI
  74         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  75         select HAVE_C_RECORDMCOUNT
  76         select NO_BOOTMEM
  77
  78 config ARCH_DEFCONFIG
  79         string
  80         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  81         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  82
  83 config IOMMU_HELPER
  84         bool
  85         default y if SPARC64
  86
  87 config STACKTRACE_SUPPORT
  88         bool
  89         default y if SPARC64
  90
  91 config LOCKDEP_SUPPORT
  92         bool
  93         default y if SPARC64
  94
  95 config HAVE_LATENCYTOP_SUPPORT
  96         bool
  97         default y if SPARC64
  98
  99 config ARCH_HIBERNATION_POSSIBLE
 100         def_bool 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 ARCH_SUPPORTS_DEBUG_PAGEALLOC
 138         def_bool y if SPARC64
 139
 140 source "init/Kconfig"
 141
 142 source "kernel/Kconfig.freezer"
 143
 144 menu "Processor type and features"
 145
 146 config SMP
 147         bool "Symmetric multi-processing support"
 148         ---help---
 149           This enables support for systems with more than one CPU. If you have
 150           a system with only one CPU, say N. If you have a system with more
 151           than one CPU, say Y.
 152
 153           If you say N here, the kernel will run on single and multiprocessor
 154           machines, but will use only one CPU of a multiprocessor machine. If
 155           you say Y here, the kernel will run on many, but not all,
 156           singleprocessor machines. On a singleprocessor machine, the kernel
 157           will run faster if you say N here.
 158
 159           People using multiprocessor machines who say Y here should also say
 160           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 161           Management" code will be disabled if you say Y here.
 162
 163           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 164           available at <http://www.tldp.org/docs.html#howto>.
 165
 166           If you don't know what to do here, say N.
 167
 168 config NR_CPUS
 169         int "Maximum number of CPUs"
 170         depends on SMP
 171         range 2 32 if SPARC32
 172         range 2 1024 if SPARC64
 173         default 32 if SPARC32
 174         default 64 if SPARC64
 175
 176 source kernel/Kconfig.hz
 177
 178 config RWSEM_GENERIC_SPINLOCK
 179         bool
 180         default y if SPARC32
 181
 182 config RWSEM_XCHGADD_ALGORITHM
 183         bool
 184         default y if SPARC64
 185
 186 config GENERIC_HWEIGHT
 187         bool
 188         default y
 189
 190 config GENERIC_CALIBRATE_DELAY
 191         bool
 192         default y
 193
 194 config ARCH_MAY_HAVE_PC_FDC
 195         bool
 196         default y
 197
 198 config EMULATED_CMPXCHG
 199         bool
 200         default y if SPARC32
 201         help
 202           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 203           is emulated, and therefore it is not completely atomic.
 204
 205 # Makefile helpers
 206 config SPARC32_SMP
 207         bool
 208         default y
 209         depends on SPARC32 && SMP
 210
 211 config SPARC64_SMP
 212         bool
 213         default y
 214         depends on SPARC64 && SMP
 215
 216 config EARLYFB
 217         bool "Support for early boot text console"
 218         default y
 219         depends on SPARC64
 220         help
 221           Say Y here to enable a faster early framebuffer boot console.
 222
 223 config SECCOMP
 224         bool "Enable seccomp to safely compute untrusted bytecode"
 225         depends on SPARC64 && PROC_FS
 226         default y
 227         help
 228           This kernel feature is useful for number crunching applications
 229           that may need to compute untrusted bytecode during their
 230           execution. By using pipes or other transports made available to
 231           the process as file descriptors supporting the read/write
 232           syscalls, it's possible to isolate those applications in
 233           their own address space using seccomp. Once seccomp is
 234           enabled via /proc/<pid>/seccomp, it cannot be disabled
 235           and the task is only allowed to execute a few safe syscalls
 236           defined by each seccomp mode.
 237
 238           If unsure, say Y. Only embedded should say N here.
 239
 240 config HOTPLUG_CPU
 241         bool "Support for hot-pluggable CPUs"
 242         depends on SPARC64 && SMP
 243         help
 244           Say Y here to experiment with turning CPUs off and on.  CPUs
 245           can be controlled through /sys/devices/system/cpu/cpu#.
 246           Say N if you want to disable CPU hotplug.
 247
 248 if SPARC64
 249 source "drivers/cpufreq/Kconfig"
 250 endif
 251
 252 config US3_MC
 253         tristate "UltraSPARC-III Memory Controller driver"
 254         depends on SPARC64
 255         default y
 256         help
 257           This adds a driver for the UltraSPARC-III memory controller.
 258           Loading this driver allows exact mnemonic strings to be
 259           printed in the event of a memory error, so that the faulty DIMM
 260           on the motherboard can be matched to the error.
 261
 262           If in doubt, say Y, as this information can be very useful.
 263
 264 # Global things across all Sun machines.
 265 config GENERIC_LOCKBREAK
 266         bool
 267         default y
 268         depends on SPARC64 && SMP && PREEMPT
 269
 270 config NUMA
 271         bool "NUMA support"
 272         depends on SPARC64 && SMP
 273
 274 config NODES_SHIFT
 275         int
 276         default "4"
 277         depends on NEED_MULTIPLE_NODES
 278
 279 # Some NUMA nodes have memory ranges that span
 280 # other nodes.  Even though a pfn is valid and
 281 # between a node's start and end pfns, it may not
 282 # reside on that node.  See memmap_init_zone()
 283 # for details.
 284 config NODES_SPAN_OTHER_NODES
 285         def_bool y
 286         depends on NEED_MULTIPLE_NODES
 287
 288 config ARCH_SELECT_MEMORY_MODEL
 289         def_bool y if SPARC64
 290
 291 config ARCH_SPARSEMEM_ENABLE
 292         def_bool y if SPARC64
 293         select SPARSEMEM_VMEMMAP_ENABLE
 294
 295 config ARCH_SPARSEMEM_DEFAULT
 296         def_bool y if SPARC64
 297
 298 source "mm/Kconfig"
 299
 300 if SPARC64
 301 source "kernel/power/Kconfig"
 302 endif
 303
 304 config SCHED_SMT
 305         bool "SMT (Hyperthreading) scheduler support"
 306         depends on SPARC64 && SMP
 307         default y
 308         help
 309           SMT scheduler support improves the CPU scheduler's decision making
 310           when dealing with SPARC cpus at a cost of slightly increased overhead
 311           in some places. If unsure say N here.
 312
 313 config SCHED_MC
 314         bool "Multi-core scheduler support"
 315         depends on SPARC64 && SMP
 316         default y
 317         help
 318           Multi-core scheduler support improves the CPU scheduler's decision
 319           making when dealing with multi-core CPU chips at a cost of slightly
 320           increased overhead in some places. If unsure say N here.
 321
 322 source "kernel/Kconfig.preempt"
 323
 324 config CMDLINE_BOOL
 325         bool "Default bootloader kernel arguments"
 326         depends on SPARC64
 327
 328 config CMDLINE
 329         string "Initial kernel command string"
 330         depends on CMDLINE_BOOL
 331         default "console=ttyS0,9600 root=/dev/sda1"
 332         help
 333           Say Y here if you want to be able to pass default arguments to
 334           the kernel. This will be overridden by the bootloader, if you
 335           use one (such as SILO). This is most useful if you want to boot
 336           a kernel from TFTP, and want default options to be available
 337           with having them passed on the command line.
 338
 339           NOTE: This option WILL override the PROM bootargs setting!
 340
 341 config SUN_PM
 342         bool
 343         default y if SPARC32
 344         help
 345           Enable power management and CPU standby features on supported
 346           SPARC platforms.
 347
 348 config SPARC_LED
 349         tristate "Sun4m LED driver"
 350         depends on SPARC32
 351         help
 352           This driver toggles the front-panel LED on sun4m systems
 353           in a user-specifiable manner.  Its state can be probed
 354           by reading /proc/led and its blinking mode can be changed
 355           via writes to /proc/led
 356
 357 config SERIAL_CONSOLE
 358         bool
 359         depends on SPARC32
 360         default y
 361         ---help---
 362           If you say Y here, it will be possible to use a serial port as the
 363           system console (the system console is the device which receives all
 364           kernel messages and warnings and which allows logins in single user
 365           mode). This could be useful if some terminal or printer is connected
 366           to that serial port.
 367
 368           Even if you say Y here, the currently visible virtual console
 369           (/dev/tty0) will still be used as the system console by default, but
 370           you can alter that using a kernel command line option such as
 371           "console=ttyS1". (Try "man bootparam" or see the documentation of
 372           your boot loader (silo) about how to pass options to the kernel at
 373           boot time.)
 374
 375           If you don't have a graphics card installed and you say Y here, the
 376           kernel will automatically use the first serial line, /dev/ttyS0, as
 377           system console.
 378
 379           If unsure, say N.
 380
 381 config SPARC_LEON
 382         bool "Sparc Leon processor family"
 383         depends on SPARC32
 384         select USB_EHCI_BIG_ENDIAN_MMIO
 385         select USB_EHCI_BIG_ENDIAN_DESC
 386         ---help---
 387           If you say Y here if you are running on a SPARC-LEON processor.
 388           The LEON processor is a synthesizable VHDL model of the
 389           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 390           IP cores that are distributed under GPL. GRLIB can be downloaded
 391           from www.gaisler.com. You can download a sparc-linux cross-compilation
 392           toolchain at www.gaisler.com.
 393
 394 if SPARC_LEON
 395 menu "U-Boot options"
 396
 397 config UBOOT_LOAD_ADDR
 398         hex "uImage Load Address"
 399         default 0x40004000
 400         ---help---
 401          U-Boot kernel load address, the address in physical address space
 402          where u-boot will place the Linux kernel before booting it.
 403          This address is normally the base address of main memory + 0x4000.
 404
 405 config UBOOT_FLASH_ADDR
 406         hex "uImage.o Load Address"
 407         default 0x00080000
 408         ---help---
 409          Optional setting only affecting the uImage.o ELF-image used to
 410          download the uImage file to the target using a ELF-loader other than
 411          U-Boot. It may for example be used to download an uImage to FLASH with
 412          the GRMON utility before even starting u-boot.
 413
 414 config UBOOT_ENTRY_ADDR
 415         hex "uImage Entry Address"
 416         default 0xf0004000
 417         ---help---
 418          Do not change this unless you know what you're doing. This is
 419          hardcoded by the SPARC32 and LEON port.
 420
 421          This is the virtual address u-boot jumps to when booting the Linux
 422          Kernel.
 423
 424 endmenu
 425 endif
 426
 427 endmenu
 428
 429 menu "Bus options (PCI etc.)"
 430 config SBUS
 431         bool
 432         default y
 433
 434 config SBUSCHAR
 435         bool
 436         default y
 437
 438 config SUN_LDOMS
 439         bool "Sun Logical Domains support"
 440         depends on SPARC64
 441         help
 442           Say Y here is you want to support virtual devices via
 443           Logical Domains.
 444
 445 config PCI
 446         bool "Support for PCI and PS/2 keyboard/mouse"
 447         help
 448           Find out whether your system includes a PCI bus. PCI is the name of
 449           a bus system, i.e. the way the CPU talks to the other stuff inside
 450           your box.  If you say Y here, the kernel will include drivers and
 451           infrastructure code to support PCI bus devices.
 452
 453           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 454           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 455           All of these platforms are extremely obscure, so say N if unsure.
 456
 457 config PCI_DOMAINS
 458         def_bool PCI if SPARC64
 459
 460 config PCI_SYSCALL
 461         def_bool PCI
 462
 463 config PCIC_PCI
 464         bool
 465         depends on PCI && SPARC32 && !SPARC_LEON
 466         default y
 467
 468 config LEON_PCI
 469         bool
 470         depends on PCI && SPARC_LEON
 471         default y
 472
 473 config SPARC_GRPCI1
 474         bool "GRPCI Host Bridge Support"
 475         depends on LEON_PCI
 476         default y
 477         help
 478           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 479           PCI host controller is typically found in GRLIB SPARC32/LEON
 480           systems. The driver has one property (all_pci_errors) controlled
 481           from the bootloader that makes the GRPCI to generate interrupts
 482           on detected PCI Parity and System errors.
 483
 484 config SPARC_GRPCI2
 485         bool "GRPCI2 Host Bridge Support"
 486         depends on LEON_PCI
 487         default y
 488         help
 489           Say Y here to include the GRPCI2 Host Bridge Driver.
 490
 491 source "drivers/pci/Kconfig"
 492
 493 source "drivers/pcmcia/Kconfig"
 494
 495 config SUN_OPENPROMFS
 496         tristate "Openprom tree appears in /proc/openprom"
 497         help
 498           If you say Y, the OpenPROM device tree will be available as a
 499           virtual file system, which you can mount to /proc/openprom by "mount
 500           -t openpromfs none /proc/openprom".
 501
 502           To compile the /proc/openprom support as a module, choose M here: the
 503           module will be called openpromfs.
 504
 505           Only choose N if you know in advance that you will not need to modify
 506           OpenPROM settings on the running system.
 507
 508 # Makefile helpers
 509 config SPARC64_PCI
 510         bool
 511         default y
 512         depends on SPARC64 && PCI
 513
 514 config SPARC64_PCI_MSI
 515         bool
 516         default y
 517         depends on SPARC64_PCI && PCI_MSI
 518
 519 endmenu
 520
 521 menu "Executable file formats"
 522
 523 source "fs/Kconfig.binfmt"
 524
 525 config COMPAT
 526         bool
 527         depends on SPARC64
 528         default y
 529         select COMPAT_BINFMT_ELF
 530         select HAVE_UID16
 531         select ARCH_WANT_OLD_COMPAT_IPC
 532         select COMPAT_OLD_SIGACTION
 533
 534 config SYSVIPC_COMPAT
 535         bool
 536         depends on COMPAT && SYSVIPC
 537         default y
 538
 539 config KEYS_COMPAT
 540         def_bool y if COMPAT && KEYS
 541
 542 endmenu
 543
 544 source "net/Kconfig"
 545
 546 source "drivers/Kconfig"
 547
 548 source "drivers/sbus/char/Kconfig"
 549
 550 source "fs/Kconfig"
 551
 552 source "arch/sparc/Kconfig.debug"
 553
 554 source "security/Kconfig"
 555
 556 source "crypto/Kconfig"
 557
 558 source "lib/Kconfig"