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 RTC_CLASS
  26         select RTC_DRV_M48T59
  27         select RTC_SYSTOHC
  28         select HAVE_DMA_API_DEBUG
  29         select HAVE_ARCH_JUMP_LABEL if SPARC64
  30         select GENERIC_IRQ_SHOW
  31         select ARCH_WANT_IPC_PARSE_VERSION
  32         select GENERIC_PCI_IOMAP
  33         select HAVE_NMI_WATCHDOG if SPARC64
  34         select HAVE_CBPF_JIT
  35         select HAVE_DEBUG_BUGVERBOSE
  36         select GENERIC_SMP_IDLE_THREAD
  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         select ARCH_HAS_SG_CHAIN
  44         select CPU_NO_EFFICIENT_FFS
  45         select HAVE_ARCH_HARDENED_USERCOPY
  46         select PROVE_LOCKING_SMALL if PROVE_LOCKING
  47         select ARCH_WANT_RELAX_ORDER
  48
  49 config SPARC32
  50         def_bool !64BIT
  51         select GENERIC_ATOMIC64
  52         select CLZ_TAB
  53         select HAVE_UID16
  54         select OLD_SIGACTION
  55
  56 config SPARC64
  57         def_bool 64BIT
  58         select HAVE_FUNCTION_TRACER
  59         select HAVE_FUNCTION_GRAPH_TRACER
  60         select HAVE_KRETPROBES
  61         select HAVE_KPROBES
  62         select HAVE_RCU_TABLE_FREE if SMP
  63         select HAVE_MEMBLOCK
  64         select HAVE_MEMBLOCK_NODE_MAP
  65         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  66         select HAVE_DYNAMIC_FTRACE
  67         select HAVE_FTRACE_MCOUNT_RECORD
  68         select HAVE_SYSCALL_TRACEPOINTS
  69         select HAVE_CONTEXT_TRACKING
  70         select HAVE_DEBUG_KMEMLEAK
  71         select SPARSE_IRQ
  72         select RTC_DRV_CMOS
  73         select RTC_DRV_BQ4802
  74         select RTC_DRV_SUN4V
  75         select RTC_DRV_STARFIRE
  76         select HAVE_PERF_EVENTS
  77         select PERF_USE_VMALLOC
  78         select IRQ_PREFLOW_FASTEOI
  79         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  80         select HAVE_C_RECORDMCOUNT
  81         select NO_BOOTMEM
  82         select HAVE_ARCH_AUDITSYSCALL
  83         select ARCH_SUPPORTS_ATOMIC_RMW
  84         select HAVE_NMI
  85
  86 config ARCH_DEFCONFIG
  87         string
  88         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  89         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  90
  91 config ARCH_PROC_KCORE_TEXT
  92         def_bool y
  93
  94 config ARCH_ATU
  95         bool
  96         default y if SPARC64
  97
  98 config ARCH_DMA_ADDR_T_64BIT
  99         bool
 100         default y if ARCH_ATU
 101
 102 config IOMMU_HELPER
 103         bool
 104         default y if SPARC64
 105
 106 config STACKTRACE_SUPPORT
 107         bool
 108         default y if SPARC64
 109
 110 config LOCKDEP_SUPPORT
 111         bool
 112         default y if SPARC64
 113
 114 config ARCH_HIBERNATION_POSSIBLE
 115         def_bool y if SPARC64
 116
 117 config AUDIT_ARCH
 118         bool
 119         default y
 120
 121 config HAVE_SETUP_PER_CPU_AREA
 122         def_bool y if SPARC64
 123
 124 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 125         def_bool y if SPARC64
 126
 127 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 128         def_bool y if SPARC64
 129
 130 config MMU
 131         bool
 132         default y
 133
 134 config HIGHMEM
 135         bool
 136         default y if SPARC32
 137
 138 config ZONE_DMA
 139         bool
 140         default y if SPARC32
 141
 142 config NEED_DMA_MAP_STATE
 143         def_bool y
 144
 145 config NEED_SG_DMA_LENGTH
 146         def_bool y
 147
 148 config GENERIC_ISA_DMA
 149         bool
 150         default y if SPARC32
 151
 152 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 153         def_bool y if SPARC64
 154
 155 config PGTABLE_LEVELS
 156         default 4 if 64BIT
 157         default 3
 158
 159 config ARCH_SUPPORTS_UPROBES
 160         def_bool y if SPARC64
 161
 162 source "init/Kconfig"
 163
 164 source "kernel/Kconfig.freezer"
 165
 166 menu "Processor type and features"
 167
 168 config SMP
 169         bool "Symmetric multi-processing support"
 170         ---help---
 171           This enables support for systems with more than one CPU. If you have
 172           a system with only one CPU, say N. If you have a system with more
 173           than one CPU, say Y.
 174
 175           If you say N here, the kernel will run on uni- and multiprocessor
 176           machines, but will use only one CPU of a multiprocessor machine. If
 177           you say Y here, the kernel will run on many, but not all,
 178           uniprocessor machines. On a uniprocessor machine, the kernel
 179           will run faster if you say N here.
 180
 181           People using multiprocessor machines who say Y here should also say
 182           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 183           Management" code will be disabled if you say Y here.
 184
 185           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 186           available at <http://www.tldp.org/docs.html#howto>.
 187
 188           If you don't know what to do here, say N.
 189
 190 config NR_CPUS
 191         int "Maximum number of CPUs"
 192         depends on SMP
 193         range 2 32 if SPARC32
 194         range 2 1024 if SPARC64
 195         default 32 if SPARC32
 196         default 64 if SPARC64
 197
 198 source kernel/Kconfig.hz
 199
 200 config RWSEM_GENERIC_SPINLOCK
 201         bool
 202         default y if SPARC32
 203
 204 config RWSEM_XCHGADD_ALGORITHM
 205         bool
 206         default y if SPARC64
 207
 208 config GENERIC_HWEIGHT
 209         bool
 210         default y
 211
 212 config GENERIC_CALIBRATE_DELAY
 213         bool
 214         default y
 215
 216 config ARCH_MAY_HAVE_PC_FDC
 217         bool
 218         default y
 219
 220 config EMULATED_CMPXCHG
 221         bool
 222         default y if SPARC32
 223         help
 224           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 225           is emulated, and therefore it is not completely atomic.
 226
 227 # Makefile helpers
 228 config SPARC32_SMP
 229         bool
 230         default y
 231         depends on SPARC32 && SMP
 232
 233 config SPARC64_SMP
 234         bool
 235         default y
 236         depends on SPARC64 && SMP
 237
 238 config EARLYFB
 239         bool "Support for early boot text console"
 240         default y
 241         depends on SPARC64
 242         help
 243           Say Y here to enable a faster early framebuffer boot console.
 244
 245 config SECCOMP
 246         bool "Enable seccomp to safely compute untrusted bytecode"
 247         depends on SPARC64 && PROC_FS
 248         default y
 249         help
 250           This kernel feature is useful for number crunching applications
 251           that may need to compute untrusted bytecode during their
 252           execution. By using pipes or other transports made available to
 253           the process as file descriptors supporting the read/write
 254           syscalls, it's possible to isolate those applications in
 255           their own address space using seccomp. Once seccomp is
 256           enabled via /proc/<pid>/seccomp, it cannot be disabled
 257           and the task is only allowed to execute a few safe syscalls
 258           defined by each seccomp mode.
 259
 260           If unsure, say Y. Only embedded should say N here.
 261
 262 config HOTPLUG_CPU
 263         bool "Support for hot-pluggable CPUs"
 264         depends on SPARC64 && SMP
 265         help
 266           Say Y here to experiment with turning CPUs off and on.  CPUs
 267           can be controlled through /sys/devices/system/cpu/cpu#.
 268           Say N if you want to disable CPU hotplug.
 269
 270 if SPARC64
 271 source "drivers/cpufreq/Kconfig"
 272 endif
 273
 274 config US3_MC
 275         tristate "UltraSPARC-III Memory Controller driver"
 276         depends on SPARC64
 277         default y
 278         help
 279           This adds a driver for the UltraSPARC-III memory controller.
 280           Loading this driver allows exact mnemonic strings to be
 281           printed in the event of a memory error, so that the faulty DIMM
 282           on the motherboard can be matched to the error.
 283
 284           If in doubt, say Y, as this information can be very useful.
 285
 286 # Global things across all Sun machines.
 287 config GENERIC_LOCKBREAK
 288         bool
 289         default y
 290         depends on SPARC64 && SMP && PREEMPT
 291
 292 config NUMA
 293         bool "NUMA support"
 294         depends on SPARC64 && SMP
 295
 296 config NODES_SHIFT
 297         int
 298         default "4"
 299         depends on NEED_MULTIPLE_NODES
 300
 301 # Some NUMA nodes have memory ranges that span
 302 # other nodes.  Even though a pfn is valid and
 303 # between a node's start and end pfns, it may not
 304 # reside on that node.  See memmap_init_zone()
 305 # for details.
 306 config NODES_SPAN_OTHER_NODES
 307         def_bool y
 308         depends on NEED_MULTIPLE_NODES
 309
 310 config ARCH_SELECT_MEMORY_MODEL
 311         def_bool y if SPARC64
 312
 313 config ARCH_SPARSEMEM_ENABLE
 314         def_bool y if SPARC64
 315         select SPARSEMEM_VMEMMAP_ENABLE
 316
 317 config ARCH_SPARSEMEM_DEFAULT
 318         def_bool y if SPARC64
 319
 320 config FORCE_MAX_ZONEORDER
 321         int "Maximum zone order"
 322         default "13"
 323         help
 324           The kernel memory allocator divides physically contiguous memory
 325           blocks into "zones", where each zone is a power of two number of
 326           pages.  This option selects the largest power of two that the kernel
 327           keeps in the memory allocator.  If you need to allocate very large
 328           blocks of physically contiguous memory, then you may need to
 329           increase this value.
 330
 331           This config option is actually maximum order plus one. For example,
 332           a value of 13 means that the largest free memory block is 2^12 pages.
 333
 334 source "mm/Kconfig"
 335
 336 if SPARC64
 337 source "kernel/power/Kconfig"
 338 endif
 339
 340 config SCHED_SMT
 341         bool "SMT (Hyperthreading) scheduler support"
 342         depends on SPARC64 && SMP
 343         default y
 344         help
 345           SMT scheduler support improves the CPU scheduler's decision making
 346           when dealing with SPARC cpus at a cost of slightly increased overhead
 347           in some places. If unsure say N here.
 348
 349 config SCHED_MC
 350         bool "Multi-core scheduler support"
 351         depends on SPARC64 && SMP
 352         default y
 353         help
 354           Multi-core scheduler support improves the CPU scheduler's decision
 355           making when dealing with multi-core CPU chips at a cost of slightly
 356           increased overhead in some places. If unsure say N here.
 357
 358 source "kernel/Kconfig.preempt"
 359
 360 config CMDLINE_BOOL
 361         bool "Default bootloader kernel arguments"
 362         depends on SPARC64
 363
 364 config CMDLINE
 365         string "Initial kernel command string"
 366         depends on CMDLINE_BOOL
 367         default "console=ttyS0,9600 root=/dev/sda1"
 368         help
 369           Say Y here if you want to be able to pass default arguments to
 370           the kernel. This will be overridden by the bootloader, if you
 371           use one (such as SILO). This is most useful if you want to boot
 372           a kernel from TFTP, and want default options to be available
 373           with having them passed on the command line.
 374
 375           NOTE: This option WILL override the PROM bootargs setting!
 376
 377 config SUN_PM
 378         bool
 379         default y if SPARC32
 380         help
 381           Enable power management and CPU standby features on supported
 382           SPARC platforms.
 383
 384 config SPARC_LED
 385         tristate "Sun4m LED driver"
 386         depends on SPARC32
 387         help
 388           This driver toggles the front-panel LED on sun4m systems
 389           in a user-specifiable manner.  Its state can be probed
 390           by reading /proc/led and its blinking mode can be changed
 391           via writes to /proc/led
 392
 393 config SERIAL_CONSOLE
 394         bool
 395         depends on SPARC32
 396         default y
 397         ---help---
 398           If you say Y here, it will be possible to use a serial port as the
 399           system console (the system console is the device which receives all
 400           kernel messages and warnings and which allows logins in single user
 401           mode). This could be useful if some terminal or printer is connected
 402           to that serial port.
 403
 404           Even if you say Y here, the currently visible virtual console
 405           (/dev/tty0) will still be used as the system console by default, but
 406           you can alter that using a kernel command line option such as
 407           "console=ttyS1". (Try "man bootparam" or see the documentation of
 408           your boot loader (silo) about how to pass options to the kernel at
 409           boot time.)
 410
 411           If you don't have a graphics card installed and you say Y here, the
 412           kernel will automatically use the first serial line, /dev/ttyS0, as
 413           system console.
 414
 415           If unsure, say N.
 416
 417 config SPARC_LEON
 418         bool "Sparc Leon processor family"
 419         depends on SPARC32
 420         select USB_EHCI_BIG_ENDIAN_MMIO
 421         select USB_EHCI_BIG_ENDIAN_DESC
 422         ---help---
 423           If you say Y here if you are running on a SPARC-LEON processor.
 424           The LEON processor is a synthesizable VHDL model of the
 425           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 426           IP cores that are distributed under GPL. GRLIB can be downloaded
 427           from www.gaisler.com. You can download a sparc-linux cross-compilation
 428           toolchain at www.gaisler.com.
 429
 430 if SPARC_LEON
 431 menu "U-Boot options"
 432
 433 config UBOOT_LOAD_ADDR
 434         hex "uImage Load Address"
 435         default 0x40004000
 436         ---help---
 437          U-Boot kernel load address, the address in physical address space
 438          where u-boot will place the Linux kernel before booting it.
 439          This address is normally the base address of main memory + 0x4000.
 440
 441 config UBOOT_FLASH_ADDR
 442         hex "uImage.o Load Address"
 443         default 0x00080000
 444         ---help---
 445          Optional setting only affecting the uImage.o ELF-image used to
 446          download the uImage file to the target using a ELF-loader other than
 447          U-Boot. It may for example be used to download an uImage to FLASH with
 448          the GRMON utility before even starting u-boot.
 449
 450 config UBOOT_ENTRY_ADDR
 451         hex "uImage Entry Address"
 452         default 0xf0004000
 453         ---help---
 454          Do not change this unless you know what you're doing. This is
 455          hardcoded by the SPARC32 and LEON port.
 456
 457          This is the virtual address u-boot jumps to when booting the Linux
 458          Kernel.
 459
 460 endmenu
 461 endif
 462
 463 endmenu
 464
 465 menu "Bus options (PCI etc.)"
 466 config SBUS
 467         bool
 468         default y
 469
 470 config SBUSCHAR
 471         bool
 472         default y
 473
 474 config SUN_LDOMS
 475         bool "Sun Logical Domains support"
 476         depends on SPARC64
 477         help
 478           Say Y here is you want to support virtual devices via
 479           Logical Domains.
 480
 481 config PCI
 482         bool "Support for PCI and PS/2 keyboard/mouse"
 483         help
 484           Find out whether your system includes a PCI bus. PCI is the name of
 485           a bus system, i.e. the way the CPU talks to the other stuff inside
 486           your box.  If you say Y here, the kernel will include drivers and
 487           infrastructure code to support PCI bus devices.
 488
 489           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 490           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 491           All of these platforms are extremely obscure, so say N if unsure.
 492
 493 config PCI_DOMAINS
 494         def_bool PCI if SPARC64
 495
 496 config PCI_SYSCALL
 497         def_bool PCI
 498
 499 config PCIC_PCI
 500         bool
 501         depends on PCI && SPARC32 && !SPARC_LEON
 502         default y
 503
 504 config LEON_PCI
 505         bool
 506         depends on PCI && SPARC_LEON
 507         default y
 508
 509 config SPARC_GRPCI1
 510         bool "GRPCI Host Bridge Support"
 511         depends on LEON_PCI
 512         default y
 513         help
 514           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 515           PCI host controller is typically found in GRLIB SPARC32/LEON
 516           systems. The driver has one property (all_pci_errors) controlled
 517           from the bootloader that makes the GRPCI to generate interrupts
 518           on detected PCI Parity and System errors.
 519
 520 config SPARC_GRPCI2
 521         bool "GRPCI2 Host Bridge Support"
 522         depends on LEON_PCI
 523         default y
 524         help
 525           Say Y here to include the GRPCI2 Host Bridge Driver.
 526
 527 source "drivers/pci/Kconfig"
 528
 529 source "drivers/pcmcia/Kconfig"
 530
 531 config SUN_OPENPROMFS
 532         tristate "Openprom tree appears in /proc/openprom"
 533         help
 534           If you say Y, the OpenPROM device tree will be available as a
 535           virtual file system, which you can mount to /proc/openprom by "mount
 536           -t openpromfs none /proc/openprom".
 537
 538           To compile the /proc/openprom support as a module, choose M here: the
 539           module will be called openpromfs.
 540
 541           Only choose N if you know in advance that you will not need to modify
 542           OpenPROM settings on the running system.
 543
 544 # Makefile helpers
 545 config SPARC64_PCI
 546         bool
 547         default y
 548         depends on SPARC64 && PCI
 549
 550 config SPARC64_PCI_MSI
 551         bool
 552         default y
 553         depends on SPARC64_PCI && PCI_MSI
 554
 555 endmenu
 556
 557 menu "Executable file formats"
 558
 559 source "fs/Kconfig.binfmt"
 560
 561 config COMPAT
 562         bool
 563         depends on SPARC64
 564         default y
 565         select COMPAT_BINFMT_ELF
 566         select HAVE_UID16
 567         select ARCH_WANT_OLD_COMPAT_IPC
 568         select COMPAT_OLD_SIGACTION
 569
 570 config SYSVIPC_COMPAT
 571         bool
 572         depends on COMPAT && SYSVIPC
 573         default y
 574
 575 config KEYS_COMPAT
 576         def_bool y if COMPAT && KEYS
 577
 578 endmenu
 579
 580 source "net/Kconfig"
 581
 582 source "drivers/Kconfig"
 583
 584 source "drivers/sbus/char/Kconfig"
 585
 586 source "fs/Kconfig"
 587
 588 source "arch/sparc/Kconfig.debug"
 589
 590 source "security/Kconfig"
 591
 592 source "crypto/Kconfig"
 593
 594 source "lib/Kconfig"