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 if SPARC32
  35         select HAVE_EBPF_JIT if SPARC64
  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         select LOCKDEP_SMALL if LOCKDEP
  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         select HAVE_REGS_AND_STACK_ACCESS_API
  86         select ARCH_USE_QUEUED_RWLOCKS
  87         select ARCH_USE_QUEUED_SPINLOCKS
  88
  89 config ARCH_DEFCONFIG
  90         string
  91         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  92         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  93
  94 config ARCH_PROC_KCORE_TEXT
  95         def_bool y
  96
  97 config CPU_BIG_ENDIAN
  98         def_bool y
  99
 100 config ARCH_ATU
 101         bool
 102         default y if SPARC64
 103
 104 config ARCH_DMA_ADDR_T_64BIT
 105         bool
 106         default y if ARCH_ATU
 107
 108 config IOMMU_HELPER
 109         bool
 110         default y if SPARC64
 111
 112 config STACKTRACE_SUPPORT
 113         bool
 114         default y if SPARC64
 115
 116 config LOCKDEP_SUPPORT
 117         bool
 118         default y if SPARC64
 119
 120 config ARCH_HIBERNATION_POSSIBLE
 121         def_bool y if SPARC64
 122
 123 config AUDIT_ARCH
 124         bool
 125         default y
 126
 127 config HAVE_SETUP_PER_CPU_AREA
 128         def_bool y if SPARC64
 129
 130 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 131         def_bool y if SPARC64
 132
 133 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 134         def_bool y if SPARC64
 135
 136 config MMU
 137         bool
 138         default y
 139
 140 config HIGHMEM
 141         bool
 142         default y if SPARC32
 143
 144 config ZONE_DMA
 145         bool
 146         default y if SPARC32
 147
 148 config NEED_DMA_MAP_STATE
 149         def_bool y
 150
 151 config NEED_SG_DMA_LENGTH
 152         def_bool y
 153
 154 config GENERIC_ISA_DMA
 155         bool
 156         default y if SPARC32
 157
 158 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 159         def_bool y if SPARC64
 160
 161 config PGTABLE_LEVELS
 162         default 4 if 64BIT
 163         default 3
 164
 165 config ARCH_SUPPORTS_UPROBES
 166         def_bool y if SPARC64
 167
 168 source "init/Kconfig"
 169
 170 source "kernel/Kconfig.freezer"
 171
 172 menu "Processor type and features"
 173
 174 config SMP
 175         bool "Symmetric multi-processing support"
 176         ---help---
 177           This enables support for systems with more than one CPU. If you have
 178           a system with only one CPU, say N. If you have a system with more
 179           than one CPU, say Y.
 180
 181           If you say N here, the kernel will run on uni- and multiprocessor
 182           machines, but will use only one CPU of a multiprocessor machine. If
 183           you say Y here, the kernel will run on many, but not all,
 184           uniprocessor machines. On a uniprocessor machine, the kernel
 185           will run faster if you say N here.
 186
 187           People using multiprocessor machines who say Y here should also say
 188           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 189           Management" code will be disabled if you say Y here.
 190
 191           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 192           available at <http://www.tldp.org/docs.html#howto>.
 193
 194           If you don't know what to do here, say N.
 195
 196 config NR_CPUS
 197         int "Maximum number of CPUs"
 198         depends on SMP
 199         range 2 32 if SPARC32
 200         range 2 4096 if SPARC64
 201         default 32 if SPARC32
 202         default 4096 if SPARC64
 203
 204 source kernel/Kconfig.hz
 205
 206 config RWSEM_GENERIC_SPINLOCK
 207         bool
 208         default y if SPARC32
 209
 210 config RWSEM_XCHGADD_ALGORITHM
 211         bool
 212         default y if SPARC64
 213
 214 config GENERIC_HWEIGHT
 215         bool
 216         default y
 217
 218 config GENERIC_CALIBRATE_DELAY
 219         bool
 220         default y
 221
 222 config ARCH_MAY_HAVE_PC_FDC
 223         bool
 224         default y
 225
 226 config EMULATED_CMPXCHG
 227         bool
 228         default y if SPARC32
 229         help
 230           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 231           is emulated, and therefore it is not completely atomic.
 232
 233 # Makefile helpers
 234 config SPARC32_SMP
 235         bool
 236         default y
 237         depends on SPARC32 && SMP
 238
 239 config SPARC64_SMP
 240         bool
 241         default y
 242         depends on SPARC64 && SMP
 243
 244 config EARLYFB
 245         bool "Support for early boot text console"
 246         default y
 247         depends on SPARC64
 248         help
 249           Say Y here to enable a faster early framebuffer boot console.
 250
 251 config SECCOMP
 252         bool "Enable seccomp to safely compute untrusted bytecode"
 253         depends on SPARC64 && PROC_FS
 254         default y
 255         help
 256           This kernel feature is useful for number crunching applications
 257           that may need to compute untrusted bytecode during their
 258           execution. By using pipes or other transports made available to
 259           the process as file descriptors supporting the read/write
 260           syscalls, it's possible to isolate those applications in
 261           their own address space using seccomp. Once seccomp is
 262           enabled via /proc/<pid>/seccomp, it cannot be disabled
 263           and the task is only allowed to execute a few safe syscalls
 264           defined by each seccomp mode.
 265
 266           If unsure, say Y. Only embedded should say N here.
 267
 268 config HOTPLUG_CPU
 269         bool "Support for hot-pluggable CPUs"
 270         depends on SPARC64 && SMP
 271         help
 272           Say Y here to experiment with turning CPUs off and on.  CPUs
 273           can be controlled through /sys/devices/system/cpu/cpu#.
 274           Say N if you want to disable CPU hotplug.
 275
 276 if SPARC64
 277 source "drivers/cpufreq/Kconfig"
 278 endif
 279
 280 config US3_MC
 281         tristate "UltraSPARC-III Memory Controller driver"
 282         depends on SPARC64
 283         default y
 284         help
 285           This adds a driver for the UltraSPARC-III memory controller.
 286           Loading this driver allows exact mnemonic strings to be
 287           printed in the event of a memory error, so that the faulty DIMM
 288           on the motherboard can be matched to the error.
 289
 290           If in doubt, say Y, as this information can be very useful.
 291
 292 # Global things across all Sun machines.
 293 config GENERIC_LOCKBREAK
 294         bool
 295         default y
 296         depends on SPARC64 && SMP && PREEMPT
 297
 298 config NUMA
 299         bool "NUMA support"
 300         depends on SPARC64 && SMP
 301
 302 config NODES_SHIFT
 303         int "Maximum NUMA Nodes (as a power of 2)"
 304         range 4 5 if SPARC64
 305         default "5"
 306         depends on NEED_MULTIPLE_NODES
 307         help
 308           Specify the maximum number of NUMA Nodes available on the target
 309           system.  Increases memory reserved to accommodate various tables.
 310
 311 # Some NUMA nodes have memory ranges that span
 312 # other nodes.  Even though a pfn is valid and
 313 # between a node's start and end pfns, it may not
 314 # reside on that node.  See memmap_init_zone()
 315 # for details.
 316 config NODES_SPAN_OTHER_NODES
 317         def_bool y
 318         depends on NEED_MULTIPLE_NODES
 319
 320 config ARCH_SELECT_MEMORY_MODEL
 321         def_bool y if SPARC64
 322
 323 config ARCH_SPARSEMEM_ENABLE
 324         def_bool y if SPARC64
 325         select SPARSEMEM_VMEMMAP_ENABLE
 326
 327 config ARCH_SPARSEMEM_DEFAULT
 328         def_bool y if SPARC64
 329
 330 config FORCE_MAX_ZONEORDER
 331         int "Maximum zone order"
 332         default "13"
 333         help
 334           The kernel memory allocator divides physically contiguous memory
 335           blocks into "zones", where each zone is a power of two number of
 336           pages.  This option selects the largest power of two that the kernel
 337           keeps in the memory allocator.  If you need to allocate very large
 338           blocks of physically contiguous memory, then you may need to
 339           increase this value.
 340
 341           This config option is actually maximum order plus one. For example,
 342           a value of 13 means that the largest free memory block is 2^12 pages.
 343
 344 source "mm/Kconfig"
 345
 346 if SPARC64
 347 source "kernel/power/Kconfig"
 348 endif
 349
 350 config SCHED_SMT
 351         bool "SMT (Hyperthreading) scheduler support"
 352         depends on SPARC64 && SMP
 353         default y
 354         help
 355           SMT scheduler support improves the CPU scheduler's decision making
 356           when dealing with SPARC cpus at a cost of slightly increased overhead
 357           in some places. If unsure say N here.
 358
 359 config SCHED_MC
 360         bool "Multi-core scheduler support"
 361         depends on SPARC64 && SMP
 362         default y
 363         help
 364           Multi-core scheduler support improves the CPU scheduler's decision
 365           making when dealing with multi-core CPU chips at a cost of slightly
 366           increased overhead in some places. If unsure say N here.
 367
 368 source "kernel/Kconfig.preempt"
 369
 370 config CMDLINE_BOOL
 371         bool "Default bootloader kernel arguments"
 372         depends on SPARC64
 373
 374 config CMDLINE
 375         string "Initial kernel command string"
 376         depends on CMDLINE_BOOL
 377         default "console=ttyS0,9600 root=/dev/sda1"
 378         help
 379           Say Y here if you want to be able to pass default arguments to
 380           the kernel. This will be overridden by the bootloader, if you
 381           use one (such as SILO). This is most useful if you want to boot
 382           a kernel from TFTP, and want default options to be available
 383           with having them passed on the command line.
 384
 385           NOTE: This option WILL override the PROM bootargs setting!
 386
 387 config SUN_PM
 388         bool
 389         default y if SPARC32
 390         help
 391           Enable power management and CPU standby features on supported
 392           SPARC platforms.
 393
 394 config SPARC_LED
 395         tristate "Sun4m LED driver"
 396         depends on SPARC32
 397         help
 398           This driver toggles the front-panel LED on sun4m systems
 399           in a user-specifiable manner.  Its state can be probed
 400           by reading /proc/led and its blinking mode can be changed
 401           via writes to /proc/led
 402
 403 config SERIAL_CONSOLE
 404         bool
 405         depends on SPARC32
 406         default y
 407         ---help---
 408           If you say Y here, it will be possible to use a serial port as the
 409           system console (the system console is the device which receives all
 410           kernel messages and warnings and which allows logins in single user
 411           mode). This could be useful if some terminal or printer is connected
 412           to that serial port.
 413
 414           Even if you say Y here, the currently visible virtual console
 415           (/dev/tty0) will still be used as the system console by default, but
 416           you can alter that using a kernel command line option such as
 417           "console=ttyS1". (Try "man bootparam" or see the documentation of
 418           your boot loader (silo) about how to pass options to the kernel at
 419           boot time.)
 420
 421           If you don't have a graphics card installed and you say Y here, the
 422           kernel will automatically use the first serial line, /dev/ttyS0, as
 423           system console.
 424
 425           If unsure, say N.
 426
 427 config SPARC_LEON
 428         bool "Sparc Leon processor family"
 429         depends on SPARC32
 430         select USB_EHCI_BIG_ENDIAN_MMIO
 431         select USB_EHCI_BIG_ENDIAN_DESC
 432         ---help---
 433           If you say Y here if you are running on a SPARC-LEON processor.
 434           The LEON processor is a synthesizable VHDL model of the
 435           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 436           IP cores that are distributed under GPL. GRLIB can be downloaded
 437           from www.gaisler.com. You can download a sparc-linux cross-compilation
 438           toolchain at www.gaisler.com.
 439
 440 if SPARC_LEON
 441 menu "U-Boot options"
 442
 443 config UBOOT_LOAD_ADDR
 444         hex "uImage Load Address"
 445         default 0x40004000
 446         ---help---
 447          U-Boot kernel load address, the address in physical address space
 448          where u-boot will place the Linux kernel before booting it.
 449          This address is normally the base address of main memory + 0x4000.
 450
 451 config UBOOT_FLASH_ADDR
 452         hex "uImage.o Load Address"
 453         default 0x00080000
 454         ---help---
 455          Optional setting only affecting the uImage.o ELF-image used to
 456          download the uImage file to the target using a ELF-loader other than
 457          U-Boot. It may for example be used to download an uImage to FLASH with
 458          the GRMON utility before even starting u-boot.
 459
 460 config UBOOT_ENTRY_ADDR
 461         hex "uImage Entry Address"
 462         default 0xf0004000
 463         ---help---
 464          Do not change this unless you know what you're doing. This is
 465          hardcoded by the SPARC32 and LEON port.
 466
 467          This is the virtual address u-boot jumps to when booting the Linux
 468          Kernel.
 469
 470 endmenu
 471 endif
 472
 473 endmenu
 474
 475 menu "Bus options (PCI etc.)"
 476 config SBUS
 477         bool
 478         default y
 479
 480 config SBUSCHAR
 481         bool
 482         default y
 483
 484 config SUN_LDOMS
 485         bool "Sun Logical Domains support"
 486         depends on SPARC64
 487         help
 488           Say Y here is you want to support virtual devices via
 489           Logical Domains.
 490
 491 config PCI
 492         bool "Support for PCI and PS/2 keyboard/mouse"
 493         help
 494           Find out whether your system includes a PCI bus. PCI is the name of
 495           a bus system, i.e. the way the CPU talks to the other stuff inside
 496           your box.  If you say Y here, the kernel will include drivers and
 497           infrastructure code to support PCI bus devices.
 498
 499           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 500           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 501           All of these platforms are extremely obscure, so say N if unsure.
 502
 503 config PCI_DOMAINS
 504         def_bool PCI if SPARC64
 505
 506 config PCI_SYSCALL
 507         def_bool PCI
 508
 509 config PCIC_PCI
 510         bool
 511         depends on PCI && SPARC32 && !SPARC_LEON
 512         default y
 513
 514 config LEON_PCI
 515         bool
 516         depends on PCI && SPARC_LEON
 517         default y
 518
 519 config SPARC_GRPCI1
 520         bool "GRPCI Host Bridge Support"
 521         depends on LEON_PCI
 522         default y
 523         help
 524           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 525           PCI host controller is typically found in GRLIB SPARC32/LEON
 526           systems. The driver has one property (all_pci_errors) controlled
 527           from the bootloader that makes the GRPCI to generate interrupts
 528           on detected PCI Parity and System errors.
 529
 530 config SPARC_GRPCI2
 531         bool "GRPCI2 Host Bridge Support"
 532         depends on LEON_PCI
 533         default y
 534         help
 535           Say Y here to include the GRPCI2 Host Bridge Driver.
 536
 537 source "drivers/pci/Kconfig"
 538
 539 source "drivers/pcmcia/Kconfig"
 540
 541 config SUN_OPENPROMFS
 542         tristate "Openprom tree appears in /proc/openprom"
 543         help
 544           If you say Y, the OpenPROM device tree will be available as a
 545           virtual file system, which you can mount to /proc/openprom by "mount
 546           -t openpromfs none /proc/openprom".
 547
 548           To compile the /proc/openprom support as a module, choose M here: the
 549           module will be called openpromfs.
 550
 551           Only choose N if you know in advance that you will not need to modify
 552           OpenPROM settings on the running system.
 553
 554 # Makefile helpers
 555 config SPARC64_PCI
 556         bool
 557         default y
 558         depends on SPARC64 && PCI
 559
 560 config SPARC64_PCI_MSI
 561         bool
 562         default y
 563         depends on SPARC64_PCI && PCI_MSI
 564
 565 endmenu
 566
 567 menu "Executable file formats"
 568
 569 source "fs/Kconfig.binfmt"
 570
 571 config COMPAT
 572         bool
 573         depends on SPARC64
 574         default y
 575         select COMPAT_BINFMT_ELF
 576         select HAVE_UID16
 577         select ARCH_WANT_OLD_COMPAT_IPC
 578         select COMPAT_OLD_SIGACTION
 579
 580 config SYSVIPC_COMPAT
 581         bool
 582         depends on COMPAT && SYSVIPC
 583         default y
 584
 585 endmenu
 586
 587 source "net/Kconfig"
 588
 589 source "drivers/Kconfig"
 590
 591 source "drivers/sbus/char/Kconfig"
 592
 593 source "fs/Kconfig"
 594
 595 source "arch/sparc/Kconfig.debug"
 596
 597 source "security/Kconfig"
 598
 599 source "crypto/Kconfig"
 600
 601 source "lib/Kconfig"