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 ARCH_HAS_SG_CHAIN
  44         select CPU_NO_EFFICIENT_FFS
  45         select LOCKDEP_SMALL if LOCKDEP
  46         select NEED_DMA_MAP_STATE
  47         select NEED_SG_DMA_LENGTH
  48
  49 config SPARC32
  50         def_bool !64BIT
  51         select ARCH_HAS_SYNC_DMA_FOR_CPU
  52         select DMA_DIRECT_OPS
  53         select GENERIC_ATOMIC64
  54         select CLZ_TAB
  55         select HAVE_UID16
  56         select OLD_SIGACTION
  57
  58 config SPARC64
  59         def_bool 64BIT
  60         select HAVE_FUNCTION_TRACER
  61         select HAVE_FUNCTION_GRAPH_TRACER
  62         select HAVE_KRETPROBES
  63         select HAVE_KPROBES
  64         select HAVE_RCU_TABLE_FREE if SMP
  65         select HAVE_MEMBLOCK_NODE_MAP
  66         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  67         select HAVE_DYNAMIC_FTRACE
  68         select HAVE_FTRACE_MCOUNT_RECORD
  69         select HAVE_SYSCALL_TRACEPOINTS
  70         select HAVE_CONTEXT_TRACKING
  71         select HAVE_DEBUG_KMEMLEAK
  72         select IOMMU_HELPER
  73         select SPARSE_IRQ
  74         select RTC_DRV_CMOS
  75         select RTC_DRV_BQ4802
  76         select RTC_DRV_SUN4V
  77         select RTC_DRV_STARFIRE
  78         select HAVE_PERF_EVENTS
  79         select PERF_USE_VMALLOC
  80         select IRQ_PREFLOW_FASTEOI
  81         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  82         select HAVE_C_RECORDMCOUNT
  83         select HAVE_ARCH_AUDITSYSCALL
  84         select ARCH_SUPPORTS_ATOMIC_RMW
  85         select HAVE_NMI
  86         select HAVE_REGS_AND_STACK_ACCESS_API
  87         select ARCH_USE_QUEUED_RWLOCKS
  88         select ARCH_USE_QUEUED_SPINLOCKS
  89         select GENERIC_TIME_VSYSCALL
  90         select ARCH_CLOCKSOURCE_DATA
  91         select ARCH_HAS_PTE_SPECIAL
  92
  93 config ARCH_DEFCONFIG
  94         string
  95         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  96         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  97
  98 config ARCH_PROC_KCORE_TEXT
  99         def_bool y
 100
 101 config CPU_BIG_ENDIAN
 102         def_bool y
 103
 104 config ARCH_ATU
 105         bool
 106         default y if SPARC64
 107
 108 config STACKTRACE_SUPPORT
 109         bool
 110         default y if SPARC64
 111
 112 config LOCKDEP_SUPPORT
 113         bool
 114         default y if SPARC64
 115
 116 config ARCH_HIBERNATION_POSSIBLE
 117         def_bool y if SPARC64
 118
 119 config AUDIT_ARCH
 120         bool
 121         default y
 122
 123 config HAVE_SETUP_PER_CPU_AREA
 124         def_bool y if SPARC64
 125
 126 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 127         def_bool y if SPARC64
 128
 129 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 130         def_bool y if SPARC64
 131
 132 config MMU
 133         bool
 134         default y
 135
 136 config HIGHMEM
 137         bool
 138         default y if SPARC32
 139
 140 config ZONE_DMA
 141         bool
 142         default y if SPARC32
 143
 144 config GENERIC_ISA_DMA
 145         bool
 146         default y if SPARC32
 147
 148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 149         def_bool y if SPARC64
 150
 151 config PGTABLE_LEVELS
 152         default 4 if 64BIT
 153         default 3
 154
 155 config ARCH_SUPPORTS_UPROBES
 156         def_bool y if SPARC64
 157
 158 menu "Processor type and features"
 159
 160 config SMP
 161         bool "Symmetric multi-processing support"
 162         ---help---
 163           This enables support for systems with more than one CPU. If you have
 164           a system with only one CPU, say N. If you have a system with more
 165           than one CPU, say Y.
 166
 167           If you say N here, the kernel will run on uni- and multiprocessor
 168           machines, but will use only one CPU of a multiprocessor machine. If
 169           you say Y here, the kernel will run on many, but not all,
 170           uniprocessor machines. On a uniprocessor machine, the kernel
 171           will run faster if you say N here.
 172
 173           People using multiprocessor machines who say Y here should also say
 174           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 175           Management" code will be disabled if you say Y here.
 176
 177           See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
 178           available at <http://www.tldp.org/docs.html#howto>.
 179
 180           If you don't know what to do here, say N.
 181
 182 config NR_CPUS
 183         int "Maximum number of CPUs"
 184         depends on SMP
 185         range 2 32 if SPARC32
 186         range 2 4096 if SPARC64
 187         default 32 if SPARC32
 188         default 4096 if SPARC64
 189
 190 source kernel/Kconfig.hz
 191
 192 config RWSEM_GENERIC_SPINLOCK
 193         bool
 194         default y if SPARC32
 195
 196 config RWSEM_XCHGADD_ALGORITHM
 197         bool
 198         default y if SPARC64
 199
 200 config GENERIC_HWEIGHT
 201         bool
 202         default y
 203
 204 config GENERIC_CALIBRATE_DELAY
 205         bool
 206         default y
 207
 208 config ARCH_MAY_HAVE_PC_FDC
 209         bool
 210         default y
 211
 212 config EMULATED_CMPXCHG
 213         bool
 214         default y if SPARC32
 215         help
 216           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 217           is emulated, and therefore it is not completely atomic.
 218
 219 # Makefile helpers
 220 config SPARC32_SMP
 221         bool
 222         default y
 223         depends on SPARC32 && SMP
 224
 225 config SPARC64_SMP
 226         bool
 227         default y
 228         depends on SPARC64 && SMP
 229
 230 config EARLYFB
 231         bool "Support for early boot text console"
 232         default y
 233         depends on SPARC64
 234         help
 235           Say Y here to enable a faster early framebuffer boot console.
 236
 237 config SECCOMP
 238         bool "Enable seccomp to safely compute untrusted bytecode"
 239         depends on SPARC64 && PROC_FS
 240         default y
 241         help
 242           This kernel feature is useful for number crunching applications
 243           that may need to compute untrusted bytecode during their
 244           execution. By using pipes or other transports made available to
 245           the process as file descriptors supporting the read/write
 246           syscalls, it's possible to isolate those applications in
 247           their own address space using seccomp. Once seccomp is
 248           enabled via /proc/<pid>/seccomp, it cannot be disabled
 249           and the task is only allowed to execute a few safe syscalls
 250           defined by each seccomp mode.
 251
 252           If unsure, say Y. Only embedded should say N here.
 253
 254 config HOTPLUG_CPU
 255         bool "Support for hot-pluggable CPUs"
 256         depends on SPARC64 && SMP
 257         help
 258           Say Y here to experiment with turning CPUs off and on.  CPUs
 259           can be controlled through /sys/devices/system/cpu/cpu#.
 260           Say N if you want to disable CPU hotplug.
 261
 262 if SPARC64
 263 source "drivers/cpufreq/Kconfig"
 264 endif
 265
 266 config US3_MC
 267         tristate "UltraSPARC-III Memory Controller driver"
 268         depends on SPARC64
 269         default y
 270         help
 271           This adds a driver for the UltraSPARC-III memory controller.
 272           Loading this driver allows exact mnemonic strings to be
 273           printed in the event of a memory error, so that the faulty DIMM
 274           on the motherboard can be matched to the error.
 275
 276           If in doubt, say Y, as this information can be very useful.
 277
 278 # Global things across all Sun machines.
 279 config GENERIC_LOCKBREAK
 280         bool
 281         default y
 282         depends on SPARC64 && SMP && PREEMPT
 283
 284 config NUMA
 285         bool "NUMA support"
 286         depends on SPARC64 && SMP
 287
 288 config NODES_SHIFT
 289         int "Maximum NUMA Nodes (as a power of 2)"
 290         range 4 5 if SPARC64
 291         default "5"
 292         depends on NEED_MULTIPLE_NODES
 293         help
 294           Specify the maximum number of NUMA Nodes available on the target
 295           system.  Increases memory reserved to accommodate various tables.
 296
 297 # Some NUMA nodes have memory ranges that span
 298 # other nodes.  Even though a pfn is valid and
 299 # between a node's start and end pfns, it may not
 300 # reside on that node.  See memmap_init_zone()
 301 # for details.
 302 config NODES_SPAN_OTHER_NODES
 303         def_bool y
 304         depends on NEED_MULTIPLE_NODES
 305
 306 config ARCH_SELECT_MEMORY_MODEL
 307         def_bool y if SPARC64
 308
 309 config ARCH_SPARSEMEM_ENABLE
 310         def_bool y if SPARC64
 311         select SPARSEMEM_VMEMMAP_ENABLE
 312
 313 config ARCH_SPARSEMEM_DEFAULT
 314         def_bool y if SPARC64
 315
 316 config FORCE_MAX_ZONEORDER
 317         int "Maximum zone order"
 318         default "13"
 319         help
 320           The kernel memory allocator divides physically contiguous memory
 321           blocks into "zones", where each zone is a power of two number of
 322           pages.  This option selects the largest power of two that the kernel
 323           keeps in the memory allocator.  If you need to allocate very large
 324           blocks of physically contiguous memory, then you may need to
 325           increase this value.
 326
 327           This config option is actually maximum order plus one. For example,
 328           a value of 13 means that the largest free memory block is 2^12 pages.
 329
 330 if SPARC64
 331 source "kernel/power/Kconfig"
 332 endif
 333
 334 config SCHED_SMT
 335         bool "SMT (Hyperthreading) scheduler support"
 336         depends on SPARC64 && SMP
 337         default y
 338         help
 339           SMT scheduler support improves the CPU scheduler's decision making
 340           when dealing with SPARC cpus at a cost of slightly increased overhead
 341           in some places. If unsure say N here.
 342
 343 config SCHED_MC
 344         bool "Multi-core scheduler support"
 345         depends on SPARC64 && SMP
 346         default y
 347         help
 348           Multi-core scheduler support improves the CPU scheduler's decision
 349           making when dealing with multi-core CPU chips at a cost of slightly
 350           increased overhead in some places. If unsure say N here.
 351
 352 config CMDLINE_BOOL
 353         bool "Default bootloader kernel arguments"
 354         depends on SPARC64
 355
 356 config CMDLINE
 357         string "Initial kernel command string"
 358         depends on CMDLINE_BOOL
 359         default "console=ttyS0,9600 root=/dev/sda1"
 360         help
 361           Say Y here if you want to be able to pass default arguments to
 362           the kernel. This will be overridden by the bootloader, if you
 363           use one (such as SILO). This is most useful if you want to boot
 364           a kernel from TFTP, and want default options to be available
 365           with having them passed on the command line.
 366
 367           NOTE: This option WILL override the PROM bootargs setting!
 368
 369 config SUN_PM
 370         bool
 371         default y if SPARC32
 372         help
 373           Enable power management and CPU standby features on supported
 374           SPARC platforms.
 375
 376 config SPARC_LED
 377         tristate "Sun4m LED driver"
 378         depends on SPARC32
 379         help
 380           This driver toggles the front-panel LED on sun4m systems
 381           in a user-specifiable manner.  Its state can be probed
 382           by reading /proc/led and its blinking mode can be changed
 383           via writes to /proc/led
 384
 385 config SERIAL_CONSOLE
 386         bool
 387         depends on SPARC32
 388         default y
 389         ---help---
 390           If you say Y here, it will be possible to use a serial port as the
 391           system console (the system console is the device which receives all
 392           kernel messages and warnings and which allows logins in single user
 393           mode). This could be useful if some terminal or printer is connected
 394           to that serial port.
 395
 396           Even if you say Y here, the currently visible virtual console
 397           (/dev/tty0) will still be used as the system console by default, but
 398           you can alter that using a kernel command line option such as
 399           "console=ttyS1". (Try "man bootparam" or see the documentation of
 400           your boot loader (silo) about how to pass options to the kernel at
 401           boot time.)
 402
 403           If you don't have a graphics card installed and you say Y here, the
 404           kernel will automatically use the first serial line, /dev/ttyS0, as
 405           system console.
 406
 407           If unsure, say N.
 408
 409 config SPARC_LEON
 410         bool "Sparc Leon processor family"
 411         depends on SPARC32
 412         select USB_EHCI_BIG_ENDIAN_MMIO
 413         select USB_EHCI_BIG_ENDIAN_DESC
 414         select USB_UHCI_BIG_ENDIAN_MMIO
 415         select USB_UHCI_BIG_ENDIAN_DESC
 416         ---help---
 417           If you say Y here if you are running on a SPARC-LEON processor.
 418           The LEON processor is a synthesizable VHDL model of the
 419           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 420           IP cores that are distributed under GPL. GRLIB can be downloaded
 421           from www.gaisler.com. You can download a sparc-linux cross-compilation
 422           toolchain at www.gaisler.com.
 423
 424 if SPARC_LEON
 425 menu "U-Boot options"
 426
 427 config UBOOT_LOAD_ADDR
 428         hex "uImage Load Address"
 429         default 0x40004000
 430         ---help---
 431          U-Boot kernel load address, the address in physical address space
 432          where u-boot will place the Linux kernel before booting it.
 433          This address is normally the base address of main memory + 0x4000.
 434
 435 config UBOOT_FLASH_ADDR
 436         hex "uImage.o Load Address"
 437         default 0x00080000
 438         ---help---
 439          Optional setting only affecting the uImage.o ELF-image used to
 440          download the uImage file to the target using a ELF-loader other than
 441          U-Boot. It may for example be used to download an uImage to FLASH with
 442          the GRMON utility before even starting u-boot.
 443
 444 config UBOOT_ENTRY_ADDR
 445         hex "uImage Entry Address"
 446         default 0xf0004000
 447         ---help---
 448          Do not change this unless you know what you're doing. This is
 449          hardcoded by the SPARC32 and LEON port.
 450
 451          This is the virtual address u-boot jumps to when booting the Linux
 452          Kernel.
 453
 454 endmenu
 455 endif
 456
 457 endmenu
 458
 459 menu "Bus options (PCI etc.)"
 460 config SBUS
 461         bool
 462         default y
 463
 464 config SBUSCHAR
 465         bool
 466         default y
 467
 468 config SUN_LDOMS
 469         bool "Sun Logical Domains support"
 470         depends on SPARC64
 471         help
 472           Say Y here is you want to support virtual devices via
 473           Logical Domains.
 474
 475 config PCI
 476         bool "Support for PCI and PS/2 keyboard/mouse"
 477         help
 478           Find out whether your system includes a PCI bus. PCI is the name of
 479           a bus system, i.e. the way the CPU talks to the other stuff inside
 480           your box.  If you say Y here, the kernel will include drivers and
 481           infrastructure code to support PCI bus devices.
 482
 483           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 484           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 485           All of these platforms are extremely obscure, so say N if unsure.
 486
 487 config PCI_DOMAINS
 488         def_bool PCI if SPARC64
 489
 490 config PCI_SYSCALL
 491         def_bool PCI
 492
 493 config PCIC_PCI
 494         bool
 495         depends on PCI && SPARC32 && !SPARC_LEON
 496         default y
 497
 498 config LEON_PCI
 499         bool
 500         depends on PCI && SPARC_LEON
 501         default y
 502
 503 config SPARC_GRPCI1
 504         bool "GRPCI Host Bridge Support"
 505         depends on LEON_PCI
 506         default y
 507         help
 508           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 509           PCI host controller is typically found in GRLIB SPARC32/LEON
 510           systems. The driver has one property (all_pci_errors) controlled
 511           from the bootloader that makes the GRPCI to generate interrupts
 512           on detected PCI Parity and System errors.
 513
 514 config SPARC_GRPCI2
 515         bool "GRPCI2 Host Bridge Support"
 516         depends on LEON_PCI
 517         default y
 518         help
 519           Say Y here to include the GRPCI2 Host Bridge Driver.
 520
 521 source "drivers/pci/Kconfig"
 522
 523 source "drivers/pcmcia/Kconfig"
 524
 525 config SUN_OPENPROMFS
 526         tristate "Openprom tree appears in /proc/openprom"
 527         help
 528           If you say Y, the OpenPROM device tree will be available as a
 529           virtual file system, which you can mount to /proc/openprom by "mount
 530           -t openpromfs none /proc/openprom".
 531
 532           To compile the /proc/openprom support as a module, choose M here: the
 533           module will be called openpromfs.
 534
 535           Only choose N if you know in advance that you will not need to modify
 536           OpenPROM settings on the running system.
 537
 538 # Makefile helpers
 539 config SPARC64_PCI
 540         bool
 541         default y
 542         depends on SPARC64 && PCI
 543
 544 config SPARC64_PCI_MSI
 545         bool
 546         default y
 547         depends on SPARC64_PCI && PCI_MSI
 548
 549 endmenu
 550
 551 config COMPAT
 552         bool
 553         depends on SPARC64
 554         default y
 555         select COMPAT_BINFMT_ELF
 556         select HAVE_UID16
 557         select ARCH_WANT_OLD_COMPAT_IPC
 558         select COMPAT_OLD_SIGACTION
 559
 560 config SYSVIPC_COMPAT
 561         bool
 562         depends on COMPAT && SYSVIPC
 563         default y
 564
 565 source "drivers/sbus/char/Kconfig"