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_ARCH_JUMP_LABEL if SPARC64
  29         select GENERIC_IRQ_SHOW
  30         select ARCH_WANT_IPC_PARSE_VERSION
  31         select GENERIC_PCI_IOMAP
  32         select HAVE_NMI_WATCHDOG if SPARC64
  33         select HAVE_CBPF_JIT if SPARC32
  34         select HAVE_EBPF_JIT if SPARC64
  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 CPU_NO_EFFICIENT_FFS
  44         select LOCKDEP_SMALL if LOCKDEP
  45         select NEED_DMA_MAP_STATE
  46         select NEED_SG_DMA_LENGTH
  47
  48 config SPARC32
  49         def_bool !64BIT
  50         select ARCH_HAS_SYNC_DMA_FOR_CPU
  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_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 IOMMU_HELPER
  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 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         select ARCH_HAS_PTE_SPECIAL
  90
  91 config ARCH_DEFCONFIG
  92         string
  93         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  94         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  95
  96 config ARCH_PROC_KCORE_TEXT
  97         def_bool y
  98
  99 config CPU_BIG_ENDIAN
 100         def_bool y
 101
 102 config ARCH_ATU
 103         bool
 104         default y if SPARC64
 105
 106 config STACKTRACE_SUPPORT
 107         bool
 108         default y if SPARC64
 109
 110 config LOCKDEP_SUPPORT
 111         bool
 112         default y if SPARC64
 113
 114 config ARCH_HIBERNATION_POSSIBLE
 115         def_bool y if SPARC64
 116
 117 config AUDIT_ARCH
 118         bool
 119         default y
 120
 121 config HAVE_SETUP_PER_CPU_AREA
 122         def_bool y if SPARC64
 123
 124 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 125         def_bool y if SPARC64
 126
 127 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 128         def_bool y if SPARC64
 129
 130 config MMU
 131         bool
 132         default y
 133
 134 config HIGHMEM
 135         bool
 136         default y if SPARC32
 137
 138 config ZONE_DMA
 139         bool
 140         default y if SPARC32
 141
 142 config GENERIC_ISA_DMA
 143         bool
 144         default y if SPARC32
 145
 146 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 147         def_bool y if SPARC64
 148
 149 config PGTABLE_LEVELS
 150         default 4 if 64BIT
 151         default 3
 152
 153 config ARCH_SUPPORTS_UPROBES
 154         def_bool y if SPARC64
 155
 156 menu "Processor type and features"
 157
 158 config SMP
 159         bool "Symmetric multi-processing support"
 160         ---help---
 161           This enables support for systems with more than one CPU. If you have
 162           a system with only one CPU, say N. If you have a system with more
 163           than one CPU, say Y.
 164
 165           If you say N here, the kernel will run on uni- and multiprocessor
 166           machines, but will use only one CPU of a multiprocessor machine. If
 167           you say Y here, the kernel will run on many, but not all,
 168           uniprocessor machines. On a uniprocessor machine, the kernel
 169           will run faster if you say N here.
 170
 171           People using multiprocessor machines who say Y here should also say
 172           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 173           Management" code will be disabled if you say Y here.
 174
 175           See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
 176           available at <http://www.tldp.org/docs.html#howto>.
 177
 178           If you don't know what to do here, say N.
 179
 180 config NR_CPUS
 181         int "Maximum number of CPUs"
 182         depends on SMP
 183         range 2 32 if SPARC32
 184         range 2 4096 if SPARC64
 185         default 32 if SPARC32
 186         default 4096 if SPARC64
 187
 188 source "kernel/Kconfig.hz"
 189
 190 config RWSEM_GENERIC_SPINLOCK
 191         bool
 192         default y if SPARC32
 193
 194 config RWSEM_XCHGADD_ALGORITHM
 195         bool
 196         default y if SPARC64
 197
 198 config GENERIC_HWEIGHT
 199         bool
 200         default y
 201
 202 config GENERIC_CALIBRATE_DELAY
 203         bool
 204         default y
 205
 206 config ARCH_MAY_HAVE_PC_FDC
 207         bool
 208         default y
 209
 210 config EMULATED_CMPXCHG
 211         bool
 212         default y if SPARC32
 213         help
 214           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 215           is emulated, and therefore it is not completely atomic.
 216
 217 # Makefile helpers
 218 config SPARC32_SMP
 219         bool
 220         default y
 221         depends on SPARC32 && SMP
 222
 223 config SPARC64_SMP
 224         bool
 225         default y
 226         depends on SPARC64 && SMP
 227
 228 config EARLYFB
 229         bool "Support for early boot text console"
 230         default y
 231         depends on SPARC64
 232         help
 233           Say Y here to enable a faster early framebuffer boot console.
 234
 235 config SECCOMP
 236         bool "Enable seccomp to safely compute untrusted bytecode"
 237         depends on SPARC64 && PROC_FS
 238         default y
 239         help
 240           This kernel feature is useful for number crunching applications
 241           that may need to compute untrusted bytecode during their
 242           execution. By using pipes or other transports made available to
 243           the process as file descriptors supporting the read/write
 244           syscalls, it's possible to isolate those applications in
 245           their own address space using seccomp. Once seccomp is
 246           enabled via /proc/<pid>/seccomp, it cannot be disabled
 247           and the task is only allowed to execute a few safe syscalls
 248           defined by each seccomp mode.
 249
 250           If unsure, say Y. Only embedded should say N here.
 251
 252 config HOTPLUG_CPU
 253         bool "Support for hot-pluggable CPUs"
 254         depends on SPARC64 && SMP
 255         help
 256           Say Y here to experiment with turning CPUs off and on.  CPUs
 257           can be controlled through /sys/devices/system/cpu/cpu#.
 258           Say N if you want to disable CPU hotplug.
 259
 260 if SPARC64
 261 source "drivers/cpufreq/Kconfig"
 262 endif
 263
 264 config US3_MC
 265         tristate "UltraSPARC-III Memory Controller driver"
 266         depends on SPARC64
 267         default y
 268         help
 269           This adds a driver for the UltraSPARC-III memory controller.
 270           Loading this driver allows exact mnemonic strings to be
 271           printed in the event of a memory error, so that the faulty DIMM
 272           on the motherboard can be matched to the error.
 273
 274           If in doubt, say Y, as this information can be very useful.
 275
 276 # Global things across all Sun machines.
 277 config GENERIC_LOCKBREAK
 278         bool
 279         default y
 280         depends on SPARC64 && SMP && PREEMPT
 281
 282 config NUMA
 283         bool "NUMA support"
 284         depends on SPARC64 && SMP
 285
 286 config NODES_SHIFT
 287         int "Maximum NUMA Nodes (as a power of 2)"
 288         range 4 5 if SPARC64
 289         default "5"
 290         depends on NEED_MULTIPLE_NODES
 291         help
 292           Specify the maximum number of NUMA Nodes available on the target
 293           system.  Increases memory reserved to accommodate various tables.
 294
 295 # Some NUMA nodes have memory ranges that span
 296 # other nodes.  Even though a pfn is valid and
 297 # between a node's start and end pfns, it may not
 298 # reside on that node.  See memmap_init_zone()
 299 # for details.
 300 config NODES_SPAN_OTHER_NODES
 301         def_bool y
 302         depends on NEED_MULTIPLE_NODES
 303
 304 config ARCH_SELECT_MEMORY_MODEL
 305         def_bool y if SPARC64
 306
 307 config ARCH_SPARSEMEM_ENABLE
 308         def_bool y if SPARC64
 309         select SPARSEMEM_VMEMMAP_ENABLE
 310
 311 config ARCH_SPARSEMEM_DEFAULT
 312         def_bool y if SPARC64
 313
 314 config FORCE_MAX_ZONEORDER
 315         int "Maximum zone order"
 316         default "13"
 317         help
 318           The kernel memory allocator divides physically contiguous memory
 319           blocks into "zones", where each zone is a power of two number of
 320           pages.  This option selects the largest power of two that the kernel
 321           keeps in the memory allocator.  If you need to allocate very large
 322           blocks of physically contiguous memory, then you may need to
 323           increase this value.
 324
 325           This config option is actually maximum order plus one. For example,
 326           a value of 13 means that the largest free memory block is 2^12 pages.
 327
 328 if SPARC64
 329 source "kernel/power/Kconfig"
 330 endif
 331
 332 config SCHED_SMT
 333         bool "SMT (Hyperthreading) scheduler support"
 334         depends on SPARC64 && SMP
 335         default y
 336         help
 337           SMT scheduler support improves the CPU scheduler's decision making
 338           when dealing with SPARC cpus at a cost of slightly increased overhead
 339           in some places. If unsure say N here.
 340
 341 config SCHED_MC
 342         bool "Multi-core scheduler support"
 343         depends on SPARC64 && SMP
 344         default y
 345         help
 346           Multi-core scheduler support improves the CPU scheduler's decision
 347           making when dealing with multi-core CPU chips at a cost of slightly
 348           increased overhead in some places. If unsure say N here.
 349
 350 config CMDLINE_BOOL
 351         bool "Default bootloader kernel arguments"
 352         depends on SPARC64
 353
 354 config CMDLINE
 355         string "Initial kernel command string"
 356         depends on CMDLINE_BOOL
 357         default "console=ttyS0,9600 root=/dev/sda1"
 358         help
 359           Say Y here if you want to be able to pass default arguments to
 360           the kernel. This will be overridden by the bootloader, if you
 361           use one (such as SILO). This is most useful if you want to boot
 362           a kernel from TFTP, and want default options to be available
 363           with having them passed on the command line.
 364
 365           NOTE: This option WILL override the PROM bootargs setting!
 366
 367 config SUN_PM
 368         bool
 369         default y if SPARC32
 370         help
 371           Enable power management and CPU standby features on supported
 372           SPARC platforms.
 373
 374 config SPARC_LED
 375         tristate "Sun4m LED driver"
 376         depends on SPARC32
 377         help
 378           This driver toggles the front-panel LED on sun4m systems
 379           in a user-specifiable manner.  Its state can be probed
 380           by reading /proc/led and its blinking mode can be changed
 381           via writes to /proc/led
 382
 383 config SERIAL_CONSOLE
 384         bool
 385         depends on SPARC32
 386         default y
 387         ---help---
 388           If you say Y here, it will be possible to use a serial port as the
 389           system console (the system console is the device which receives all
 390           kernel messages and warnings and which allows logins in single user
 391           mode). This could be useful if some terminal or printer is connected
 392           to that serial port.
 393
 394           Even if you say Y here, the currently visible virtual console
 395           (/dev/tty0) will still be used as the system console by default, but
 396           you can alter that using a kernel command line option such as
 397           "console=ttyS1". (Try "man bootparam" or see the documentation of
 398           your boot loader (silo) about how to pass options to the kernel at
 399           boot time.)
 400
 401           If you don't have a graphics card installed and you say Y here, the
 402           kernel will automatically use the first serial line, /dev/ttyS0, as
 403           system console.
 404
 405           If unsure, say N.
 406
 407 config SPARC_LEON
 408         bool "Sparc Leon processor family"
 409         depends on SPARC32
 410         select USB_EHCI_BIG_ENDIAN_MMIO
 411         select USB_EHCI_BIG_ENDIAN_DESC
 412         select USB_UHCI_BIG_ENDIAN_MMIO
 413         select USB_UHCI_BIG_ENDIAN_DESC
 414         ---help---
 415           If you say Y here if you are running on a SPARC-LEON processor.
 416           The LEON processor is a synthesizable VHDL model of the
 417           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 418           IP cores that are distributed under GPL. GRLIB can be downloaded
 419           from www.gaisler.com. You can download a sparc-linux cross-compilation
 420           toolchain at www.gaisler.com.
 421
 422 if SPARC_LEON
 423 menu "U-Boot options"
 424
 425 config UBOOT_LOAD_ADDR
 426         hex "uImage Load Address"
 427         default 0x40004000
 428         ---help---
 429          U-Boot kernel load address, the address in physical address space
 430          where u-boot will place the Linux kernel before booting it.
 431          This address is normally the base address of main memory + 0x4000.
 432
 433 config UBOOT_FLASH_ADDR
 434         hex "uImage.o Load Address"
 435         default 0x00080000
 436         ---help---
 437          Optional setting only affecting the uImage.o ELF-image used to
 438          download the uImage file to the target using a ELF-loader other than
 439          U-Boot. It may for example be used to download an uImage to FLASH with
 440          the GRMON utility before even starting u-boot.
 441
 442 config UBOOT_ENTRY_ADDR
 443         hex "uImage Entry Address"
 444         default 0xf0004000
 445         ---help---
 446          Do not change this unless you know what you're doing. This is
 447          hardcoded by the SPARC32 and LEON port.
 448
 449          This is the virtual address u-boot jumps to when booting the Linux
 450          Kernel.
 451
 452 endmenu
 453 endif
 454
 455 endmenu
 456
 457 menu "Bus options (PCI etc.)"
 458 config SBUS
 459         bool
 460         default y
 461
 462 config SBUSCHAR
 463         bool
 464         default y
 465
 466 config SUN_LDOMS
 467         bool "Sun Logical Domains support"
 468         depends on SPARC64
 469         help
 470           Say Y here is you want to support virtual devices via
 471           Logical Domains.
 472
 473 config PCI
 474         bool "Support for PCI and PS/2 keyboard/mouse"
 475         help
 476           Find out whether your system includes a PCI bus. PCI is the name of
 477           a bus system, i.e. the way the CPU talks to the other stuff inside
 478           your box.  If you say Y here, the kernel will include drivers and
 479           infrastructure code to support PCI bus devices.
 480
 481           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 482           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 483           All of these platforms are extremely obscure, so say N if unsure.
 484
 485 config PCI_DOMAINS
 486         def_bool PCI if SPARC64
 487
 488 config PCI_SYSCALL
 489         def_bool PCI
 490
 491 config PCIC_PCI
 492         bool
 493         depends on PCI && SPARC32 && !SPARC_LEON
 494         default y
 495
 496 config LEON_PCI
 497         bool
 498         depends on PCI && SPARC_LEON
 499         default y
 500
 501 config SPARC_GRPCI1
 502         bool "GRPCI Host Bridge Support"
 503         depends on LEON_PCI
 504         default y
 505         help
 506           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 507           PCI host controller is typically found in GRLIB SPARC32/LEON
 508           systems. The driver has one property (all_pci_errors) controlled
 509           from the bootloader that makes the GRPCI to generate interrupts
 510           on detected PCI Parity and System errors.
 511
 512 config SPARC_GRPCI2
 513         bool "GRPCI2 Host Bridge Support"
 514         depends on LEON_PCI
 515         default y
 516         help
 517           Say Y here to include the GRPCI2 Host Bridge Driver.
 518
 519 source "drivers/pci/Kconfig"
 520
 521 source "drivers/pcmcia/Kconfig"
 522
 523 config SUN_OPENPROMFS
 524         tristate "Openprom tree appears in /proc/openprom"
 525         help
 526           If you say Y, the OpenPROM device tree will be available as a
 527           virtual file system, which you can mount to /proc/openprom by "mount
 528           -t openpromfs none /proc/openprom".
 529
 530           To compile the /proc/openprom support as a module, choose M here: the
 531           module will be called openpromfs.
 532
 533           Only choose N if you know in advance that you will not need to modify
 534           OpenPROM settings on the running system.
 535
 536 # Makefile helpers
 537 config SPARC64_PCI
 538         bool
 539         default y
 540         depends on SPARC64 && PCI
 541
 542 config SPARC64_PCI_MSI
 543         bool
 544         default y
 545         depends on SPARC64_PCI && PCI_MSI
 546
 547 endmenu
 548
 549 config COMPAT
 550         bool
 551         depends on SPARC64
 552         default y
 553         select COMPAT_BINFMT_ELF
 554         select HAVE_UID16
 555         select ARCH_WANT_OLD_COMPAT_IPC
 556         select COMPAT_OLD_SIGACTION
 557
 558 config SYSVIPC_COMPAT
 559         bool
 560         depends on COMPAT && SYSVIPC
 561         default y
 562
 563 source "drivers/sbus/char/Kconfig"