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 OF
  16         select OF_PROMTREE
  17         select HAVE_IDE
  18         select HAVE_OPROFILE
  19         select HAVE_ARCH_KGDB if !SMP || SPARC64
  20         select HAVE_ARCH_TRACEHOOK
  21         select SYSCTL_EXCEPTION_TRACE
  22         select ARCH_WANT_OPTIONAL_GPIOLIB
  23         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  24         select RTC_CLASS
  25         select RTC_DRV_M48T59
  26         select HAVE_DMA_ATTRS
  27         select HAVE_DMA_API_DEBUG
  28         select HAVE_ARCH_JUMP_LABEL
  29         select GENERIC_IRQ_SHOW
  30         select ARCH_WANT_IPC_PARSE_VERSION
  31         select USE_GENERIC_SMP_HELPERS if SMP
  32         select GENERIC_PCI_IOMAP
  33         select HAVE_NMI_WATCHDOG if SPARC64
  34         select HAVE_BPF_JIT
  35         select HAVE_DEBUG_BUGVERBOSE
  36         select GENERIC_SMP_IDLE_THREAD
  37         select GENERIC_CMOS_UPDATE
  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
  45 config SPARC32
  46         def_bool !64BIT
  47         select GENERIC_ATOMIC64
  48         select CLZ_TAB
  49         select HAVE_UID16
  50         select OLD_SIGACTION
  51
  52 config SPARC64
  53         def_bool 64BIT
  54         select HAVE_FUNCTION_TRACER
  55         select HAVE_FUNCTION_GRAPH_TRACER
  56         select HAVE_FUNCTION_GRAPH_FP_TEST
  57         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  58         select HAVE_KRETPROBES
  59         select HAVE_KPROBES
  60         select HAVE_RCU_TABLE_FREE if SMP
  61         select HAVE_MEMBLOCK
  62         select HAVE_MEMBLOCK_NODE_MAP
  63         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  64         select HAVE_DYNAMIC_FTRACE
  65         select HAVE_FTRACE_MCOUNT_RECORD
  66         select HAVE_SYSCALL_TRACEPOINTS
  67         select HAVE_CONTEXT_TRACKING
  68         select HAVE_DEBUG_KMEMLEAK
  69         select RTC_DRV_CMOS
  70         select RTC_DRV_BQ4802
  71         select RTC_DRV_SUN4V
  72         select RTC_DRV_STARFIRE
  73         select HAVE_PERF_EVENTS
  74         select PERF_USE_VMALLOC
  75         select IRQ_PREFLOW_FASTEOI
  76         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  77         select HAVE_C_RECORDMCOUNT
  78         select NO_BOOTMEM
  79
  80 config ARCH_DEFCONFIG
  81         string
  82         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  83         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  84
  85 config IOMMU_HELPER
  86         bool
  87         default y if SPARC64
  88
  89 config STACKTRACE_SUPPORT
  90         bool
  91         default y if SPARC64
  92
  93 config LOCKDEP_SUPPORT
  94         bool
  95         default y if SPARC64
  96
  97 config HAVE_LATENCYTOP_SUPPORT
  98         bool
  99         default y if SPARC64
 100
 101 config ARCH_HIBERNATION_POSSIBLE
 102         def_bool y if SPARC64
 103
 104 config AUDIT_ARCH
 105         bool
 106         default y
 107
 108 config HAVE_SETUP_PER_CPU_AREA
 109         def_bool y if SPARC64
 110
 111 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 112         def_bool y if SPARC64
 113
 114 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 115         def_bool y if SPARC64
 116
 117 config MMU
 118         bool
 119         default y
 120
 121 config HIGHMEM
 122         bool
 123         default y if SPARC32
 124
 125 config ZONE_DMA
 126         bool
 127         default y if SPARC32
 128
 129 config NEED_DMA_MAP_STATE
 130         def_bool y
 131
 132 config NEED_SG_DMA_LENGTH
 133         def_bool y
 134
 135 config GENERIC_ISA_DMA
 136         bool
 137         default y if SPARC32
 138
 139 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 140         def_bool y if SPARC64
 141
 142 source "init/Kconfig"
 143
 144 source "kernel/Kconfig.freezer"
 145
 146 menu "Processor type and features"
 147
 148 config SMP
 149         bool "Symmetric multi-processing support"
 150         ---help---
 151           This enables support for systems with more than one CPU. If you have
 152           a system with only one CPU, say N. If you have a system with more
 153           than one CPU, say Y.
 154
 155           If you say N here, the kernel will run on single and multiprocessor
 156           machines, but will use only one CPU of a multiprocessor machine. If
 157           you say Y here, the kernel will run on many, but not all,
 158           singleprocessor machines. On a singleprocessor machine, the kernel
 159           will run faster if you say N here.
 160
 161           People using multiprocessor machines who say Y here should also say
 162           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 163           Management" code will be disabled if you say Y here.
 164
 165           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 166           available at <http://www.tldp.org/docs.html#howto>.
 167
 168           If you don't know what to do here, say N.
 169
 170 config NR_CPUS
 171         int "Maximum number of CPUs"
 172         depends on SMP
 173         range 2 32 if SPARC32
 174         range 2 1024 if SPARC64
 175         default 32 if SPARC32
 176         default 64 if SPARC64
 177
 178 source kernel/Kconfig.hz
 179
 180 config RWSEM_GENERIC_SPINLOCK
 181         bool
 182         default y if SPARC32
 183
 184 config RWSEM_XCHGADD_ALGORITHM
 185         bool
 186         default y if SPARC64
 187
 188 config GENERIC_HWEIGHT
 189         bool
 190         default y
 191
 192 config GENERIC_CALIBRATE_DELAY
 193         bool
 194         default y
 195
 196 config ARCH_MAY_HAVE_PC_FDC
 197         bool
 198         default y
 199
 200 config EMULATED_CMPXCHG
 201         bool
 202         default y if SPARC32
 203         help
 204           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 205           is emulated, and therefore it is not completely atomic.
 206
 207 # Makefile helpers
 208 config SPARC32_SMP
 209         bool
 210         default y
 211         depends on SPARC32 && SMP
 212
 213 config SPARC64_SMP
 214         bool
 215         default y
 216         depends on SPARC64 && SMP
 217
 218 config EARLYFB
 219         bool "Support for early boot text console"
 220         default y
 221         depends on SPARC64
 222         help
 223           Say Y here to enable a faster early framebuffer boot console.
 224
 225 config SECCOMP
 226         bool "Enable seccomp to safely compute untrusted bytecode"
 227         depends on SPARC64 && PROC_FS
 228         default y
 229         help
 230           This kernel feature is useful for number crunching applications
 231           that may need to compute untrusted bytecode during their
 232           execution. By using pipes or other transports made available to
 233           the process as file descriptors supporting the read/write
 234           syscalls, it's possible to isolate those applications in
 235           their own address space using seccomp. Once seccomp is
 236           enabled via /proc/<pid>/seccomp, it cannot be disabled
 237           and the task is only allowed to execute a few safe syscalls
 238           defined by each seccomp mode.
 239
 240           If unsure, say Y. Only embedded should say N here.
 241
 242 config HOTPLUG_CPU
 243         bool "Support for hot-pluggable CPUs"
 244         depends on SPARC64 && SMP
 245         help
 246           Say Y here to experiment with turning CPUs off and on.  CPUs
 247           can be controlled through /sys/devices/system/cpu/cpu#.
 248           Say N if you want to disable CPU hotplug.
 249
 250 if SPARC64
 251 source "drivers/cpufreq/Kconfig"
 252 endif
 253
 254 config US3_MC
 255         tristate "UltraSPARC-III Memory Controller driver"
 256         depends on SPARC64
 257         default y
 258         help
 259           This adds a driver for the UltraSPARC-III memory controller.
 260           Loading this driver allows exact mnemonic strings to be
 261           printed in the event of a memory error, so that the faulty DIMM
 262           on the motherboard can be matched to the error.
 263
 264           If in doubt, say Y, as this information can be very useful.
 265
 266 # Global things across all Sun machines.
 267 config GENERIC_LOCKBREAK
 268         bool
 269         default y
 270         depends on SPARC64 && SMP && PREEMPT
 271
 272 config NUMA
 273         bool "NUMA support"
 274         depends on SPARC64 && SMP
 275
 276 config NODES_SHIFT
 277         int
 278         default "4"
 279         depends on NEED_MULTIPLE_NODES
 280
 281 # Some NUMA nodes have memory ranges that span
 282 # other nodes.  Even though a pfn is valid and
 283 # between a node's start and end pfns, it may not
 284 # reside on that node.  See memmap_init_zone()
 285 # for details.
 286 config NODES_SPAN_OTHER_NODES
 287         def_bool y
 288         depends on NEED_MULTIPLE_NODES
 289
 290 config ARCH_SELECT_MEMORY_MODEL
 291         def_bool y if SPARC64
 292
 293 config ARCH_SPARSEMEM_ENABLE
 294         def_bool y if SPARC64
 295         select SPARSEMEM_VMEMMAP_ENABLE
 296
 297 config ARCH_SPARSEMEM_DEFAULT
 298         def_bool y if SPARC64
 299
 300 source "mm/Kconfig"
 301
 302 if SPARC64
 303 source "kernel/power/Kconfig"
 304 endif
 305
 306 config SCHED_SMT
 307         bool "SMT (Hyperthreading) scheduler support"
 308         depends on SPARC64 && SMP
 309         default y
 310         help
 311           SMT scheduler support improves the CPU scheduler's decision making
 312           when dealing with SPARC cpus at a cost of slightly increased overhead
 313           in some places. If unsure say N here.
 314
 315 config SCHED_MC
 316         bool "Multi-core scheduler support"
 317         depends on SPARC64 && SMP
 318         default y
 319         help
 320           Multi-core scheduler support improves the CPU scheduler's decision
 321           making when dealing with multi-core CPU chips at a cost of slightly
 322           increased overhead in some places. If unsure say N here.
 323
 324 source "kernel/Kconfig.preempt"
 325
 326 config CMDLINE_BOOL
 327         bool "Default bootloader kernel arguments"
 328         depends on SPARC64
 329
 330 config CMDLINE
 331         string "Initial kernel command string"
 332         depends on CMDLINE_BOOL
 333         default "console=ttyS0,9600 root=/dev/sda1"
 334         help
 335           Say Y here if you want to be able to pass default arguments to
 336           the kernel. This will be overridden by the bootloader, if you
 337           use one (such as SILO). This is most useful if you want to boot
 338           a kernel from TFTP, and want default options to be available
 339           with having them passed on the command line.
 340
 341           NOTE: This option WILL override the PROM bootargs setting!
 342
 343 config SUN_PM
 344         bool
 345         default y if SPARC32
 346         help
 347           Enable power management and CPU standby features on supported
 348           SPARC platforms.
 349
 350 config SPARC_LED
 351         tristate "Sun4m LED driver"
 352         depends on SPARC32
 353         help
 354           This driver toggles the front-panel LED on sun4m systems
 355           in a user-specifiable manner.  Its state can be probed
 356           by reading /proc/led and its blinking mode can be changed
 357           via writes to /proc/led
 358
 359 config SERIAL_CONSOLE
 360         bool
 361         depends on SPARC32
 362         default y
 363         ---help---
 364           If you say Y here, it will be possible to use a serial port as the
 365           system console (the system console is the device which receives all
 366           kernel messages and warnings and which allows logins in single user
 367           mode). This could be useful if some terminal or printer is connected
 368           to that serial port.
 369
 370           Even if you say Y here, the currently visible virtual console
 371           (/dev/tty0) will still be used as the system console by default, but
 372           you can alter that using a kernel command line option such as
 373           "console=ttyS1". (Try "man bootparam" or see the documentation of
 374           your boot loader (silo) about how to pass options to the kernel at
 375           boot time.)
 376
 377           If you don't have a graphics card installed and you say Y here, the
 378           kernel will automatically use the first serial line, /dev/ttyS0, as
 379           system console.
 380
 381           If unsure, say N.
 382
 383 config SPARC_LEON
 384         bool "Sparc Leon processor family"
 385         depends on SPARC32
 386         select USB_EHCI_BIG_ENDIAN_MMIO
 387         select USB_EHCI_BIG_ENDIAN_DESC
 388         ---help---
 389           If you say Y here if you are running on a SPARC-LEON processor.
 390           The LEON processor is a synthesizable VHDL model of the
 391           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 392           IP cores that are distributed under GPL. GRLIB can be downloaded
 393           from www.gaisler.com. You can download a sparc-linux cross-compilation
 394           toolchain at www.gaisler.com.
 395
 396 if SPARC_LEON
 397 menu "U-Boot options"
 398
 399 config UBOOT_LOAD_ADDR
 400         hex "uImage Load Address"
 401         default 0x40004000
 402         ---help---
 403          U-Boot kernel load address, the address in physical address space
 404          where u-boot will place the Linux kernel before booting it.
 405          This address is normally the base address of main memory + 0x4000.
 406
 407 config UBOOT_FLASH_ADDR
 408         hex "uImage.o Load Address"
 409         default 0x00080000
 410         ---help---
 411          Optional setting only affecting the uImage.o ELF-image used to
 412          download the uImage file to the target using a ELF-loader other than
 413          U-Boot. It may for example be used to download an uImage to FLASH with
 414          the GRMON utility before even starting u-boot.
 415
 416 config UBOOT_ENTRY_ADDR
 417         hex "uImage Entry Address"
 418         default 0xf0004000
 419         ---help---
 420          Do not change this unless you know what you're doing. This is
 421          hardcoded by the SPARC32 and LEON port.
 422
 423          This is the virtual address u-boot jumps to when booting the Linux
 424          Kernel.
 425
 426 endmenu
 427 endif
 428
 429 endmenu
 430
 431 menu "Bus options (PCI etc.)"
 432 config SBUS
 433         bool
 434         default y
 435
 436 config SBUSCHAR
 437         bool
 438         default y
 439
 440 config SUN_LDOMS
 441         bool "Sun Logical Domains support"
 442         depends on SPARC64
 443         help
 444           Say Y here is you want to support virtual devices via
 445           Logical Domains.
 446
 447 config PCI
 448         bool "Support for PCI and PS/2 keyboard/mouse"
 449         help
 450           Find out whether your system includes a PCI bus. PCI is the name of
 451           a bus system, i.e. the way the CPU talks to the other stuff inside
 452           your box.  If you say Y here, the kernel will include drivers and
 453           infrastructure code to support PCI bus devices.
 454
 455           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 456           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 457           All of these platforms are extremely obscure, so say N if unsure.
 458
 459 config PCI_DOMAINS
 460         def_bool PCI if SPARC64
 461
 462 config PCI_SYSCALL
 463         def_bool PCI
 464
 465 config PCIC_PCI
 466         bool
 467         depends on PCI && SPARC32 && !SPARC_LEON
 468         default y
 469
 470 config LEON_PCI
 471         bool
 472         depends on PCI && SPARC_LEON
 473         default y
 474
 475 config SPARC_GRPCI1
 476         bool "GRPCI Host Bridge Support"
 477         depends on LEON_PCI
 478         default y
 479         help
 480           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 481           PCI host controller is typically found in GRLIB SPARC32/LEON
 482           systems. The driver has one property (all_pci_errors) controlled
 483           from the bootloader that makes the GRPCI to generate interrupts
 484           on detected PCI Parity and System errors.
 485
 486 config SPARC_GRPCI2
 487         bool "GRPCI2 Host Bridge Support"
 488         depends on LEON_PCI
 489         default y
 490         help
 491           Say Y here to include the GRPCI2 Host Bridge Driver.
 492
 493 source "drivers/pci/Kconfig"
 494
 495 source "drivers/pcmcia/Kconfig"
 496
 497 config SUN_OPENPROMFS
 498         tristate "Openprom tree appears in /proc/openprom"
 499         help
 500           If you say Y, the OpenPROM device tree will be available as a
 501           virtual file system, which you can mount to /proc/openprom by "mount
 502           -t openpromfs none /proc/openprom".
 503
 504           To compile the /proc/openprom support as a module, choose M here: the
 505           module will be called openpromfs.
 506
 507           Only choose N if you know in advance that you will not need to modify
 508           OpenPROM settings on the running system.
 509
 510 # Makefile helpers
 511 config SPARC64_PCI
 512         bool
 513         default y
 514         depends on SPARC64 && PCI
 515
 516 config SPARC64_PCI_MSI
 517         bool
 518         default y
 519         depends on SPARC64_PCI && PCI_MSI
 520
 521 endmenu
 522
 523 menu "Executable file formats"
 524
 525 source "fs/Kconfig.binfmt"
 526
 527 config COMPAT
 528         bool
 529         depends on SPARC64
 530         default y
 531         select COMPAT_BINFMT_ELF
 532         select HAVE_UID16
 533         select ARCH_WANT_OLD_COMPAT_IPC
 534         select COMPAT_OLD_SIGACTION
 535
 536 config SYSVIPC_COMPAT
 537         bool
 538         depends on COMPAT && SYSVIPC
 539         default y
 540
 541 config KEYS_COMPAT
 542         def_bool y if COMPAT && KEYS
 543
 544 endmenu
 545
 546 source "net/Kconfig"
 547
 548 source "drivers/Kconfig"
 549
 550 source "drivers/sbus/char/Kconfig"
 551
 552 source "fs/Kconfig"
 553
 554 source "arch/sparc/Kconfig.debug"
 555
 556 source "security/Kconfig"
 557
 558 source "crypto/Kconfig"
 559
 560 source "lib/Kconfig"