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