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