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