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 HAVE_PCI
  25         select SYSCTL_EXCEPTION_TRACE
  26         select RTC_CLASS
  27         select RTC_DRV_M48T59
  28         select RTC_SYSTOHC
  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 PCI_SYSCALL if PCI
  43         select ODD_RT_SIGACTION
  44         select OLD_SIGSUSPEND
  45         select CPU_NO_EFFICIENT_FFS
  46         select LOCKDEP_SMALL if LOCKDEP
  47         select NEED_DMA_MAP_STATE
  48         select NEED_SG_DMA_LENGTH
  49
  50 config SPARC32
  51         def_bool !64BIT
  52         select ARCH_32BIT_OFF_T
  53         select ARCH_HAS_SYNC_DMA_FOR_CPU
  54         select GENERIC_ATOMIC64
  55         select CLZ_TAB
  56         select HAVE_UID16
  57         select OLD_SIGACTION
  58
  59 config SPARC64
  60         def_bool 64BIT
  61         select HAVE_FUNCTION_TRACER
  62         select HAVE_FUNCTION_GRAPH_TRACER
  63         select HAVE_KRETPROBES
  64         select HAVE_KPROBES
  65         select HAVE_RCU_TABLE_FREE if SMP
  66         select HAVE_MEMBLOCK_NODE_MAP
  67         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  68         select HAVE_DYNAMIC_FTRACE
  69         select HAVE_FTRACE_MCOUNT_RECORD
  70         select HAVE_SYSCALL_TRACEPOINTS
  71         select HAVE_CONTEXT_TRACKING
  72         select HAVE_DEBUG_KMEMLEAK
  73         select IOMMU_HELPER
  74         select SPARSE_IRQ
  75         select RTC_DRV_CMOS
  76         select RTC_DRV_BQ4802
  77         select RTC_DRV_SUN4V
  78         select RTC_DRV_STARFIRE
  79         select HAVE_PERF_EVENTS
  80         select PERF_USE_VMALLOC
  81         select IRQ_PREFLOW_FASTEOI
  82         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  83         select HAVE_C_RECORDMCOUNT
  84         select HAVE_ARCH_AUDITSYSCALL
  85         select ARCH_SUPPORTS_ATOMIC_RMW
  86         select HAVE_NMI
  87         select HAVE_REGS_AND_STACK_ACCESS_API
  88         select ARCH_USE_QUEUED_RWLOCKS
  89         select ARCH_USE_QUEUED_SPINLOCKS
  90         select GENERIC_TIME_VSYSCALL
  91         select ARCH_CLOCKSOURCE_DATA
  92         select ARCH_HAS_PTE_SPECIAL
  93         select PCI_DOMAINS if PCI
  94
  95 config ARCH_DEFCONFIG
  96         string
  97         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  98         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  99
 100 config ARCH_PROC_KCORE_TEXT
 101         def_bool y
 102
 103 config CPU_BIG_ENDIAN
 104         def_bool y
 105
 106 config ARCH_ATU
 107         bool
 108         default y if SPARC64
 109
 110 config STACKTRACE_SUPPORT
 111         bool
 112         default y if SPARC64
 113
 114 config LOCKDEP_SUPPORT
 115         bool
 116         default y if SPARC64
 117
 118 config ARCH_HIBERNATION_POSSIBLE
 119         def_bool y if SPARC64
 120
 121 config AUDIT_ARCH
 122         bool
 123         default y
 124
 125 config HAVE_SETUP_PER_CPU_AREA
 126         def_bool y if SPARC64
 127
 128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 129         def_bool y if SPARC64
 130
 131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 132         def_bool y if SPARC64
 133
 134 config MMU
 135         bool
 136         default y
 137
 138 config HIGHMEM
 139         bool
 140         default y if SPARC32
 141
 142 config ZONE_DMA
 143         bool
 144         default y if SPARC32
 145
 146 config GENERIC_ISA_DMA
 147         bool
 148         default y if SPARC32
 149
 150 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 151         def_bool y if SPARC64
 152
 153 config PGTABLE_LEVELS
 154         default 4 if 64BIT
 155         default 3
 156
 157 config ARCH_SUPPORTS_UPROBES
 158         def_bool y if SPARC64
 159
 160 menu "Processor type and features"
 161
 162 config SMP
 163         bool "Symmetric multi-processing support"
 164         ---help---
 165           This enables support for systems with more than one CPU. If you have
 166           a system with only one CPU, say N. If you have a system with more
 167           than one CPU, say Y.
 168
 169           If you say N here, the kernel will run on uni- and multiprocessor
 170           machines, but will use only one CPU of a multiprocessor machine. If
 171           you say Y here, the kernel will run on many, but not all,
 172           uniprocessor machines. On a uniprocessor machine, the kernel
 173           will run faster if you say N here.
 174
 175           People using multiprocessor machines who say Y here should also say
 176           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 177           Management" code will be disabled if you say Y here.
 178
 179           See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
 180           available at <http://www.tldp.org/docs.html#howto>.
 181
 182           If you don't know what to do here, say N.
 183
 184 config NR_CPUS
 185         int "Maximum number of CPUs"
 186         depends on SMP
 187         range 2 32 if SPARC32
 188         range 2 4096 if SPARC64
 189         default 32 if SPARC32
 190         default 4096 if SPARC64
 191
 192 source "kernel/Kconfig.hz"
 193
 194 config RWSEM_GENERIC_SPINLOCK
 195         bool
 196         default y if SPARC32
 197
 198 config RWSEM_XCHGADD_ALGORITHM
 199         bool
 200         default y if SPARC64
 201
 202 config GENERIC_HWEIGHT
 203         bool
 204         default y
 205
 206 config GENERIC_CALIBRATE_DELAY
 207         bool
 208         default y
 209
 210 config ARCH_MAY_HAVE_PC_FDC
 211         bool
 212         default y
 213
 214 config EMULATED_CMPXCHG
 215         bool
 216         default y if SPARC32
 217         help
 218           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 219           is emulated, and therefore it is not completely atomic.
 220
 221 # Makefile helpers
 222 config SPARC32_SMP
 223         bool
 224         default y
 225         depends on SPARC32 && SMP
 226
 227 config SPARC64_SMP
 228         bool
 229         default y
 230         depends on SPARC64 && SMP
 231
 232 config EARLYFB
 233         bool "Support for early boot text console"
 234         default y
 235         depends on SPARC64
 236         help
 237           Say Y here to enable a faster early framebuffer boot console.
 238
 239 config SECCOMP
 240         bool "Enable seccomp to safely compute untrusted bytecode"
 241         depends on SPARC64 && PROC_FS
 242         default y
 243         help
 244           This kernel feature is useful for number crunching applications
 245           that may need to compute untrusted bytecode during their
 246           execution. By using pipes or other transports made available to
 247           the process as file descriptors supporting the read/write
 248           syscalls, it's possible to isolate those applications in
 249           their own address space using seccomp. Once seccomp is
 250           enabled via /proc/<pid>/seccomp, it cannot be disabled
 251           and the task is only allowed to execute a few safe syscalls
 252           defined by each seccomp mode.
 253
 254           If unsure, say Y. Only embedded should say N here.
 255
 256 config HOTPLUG_CPU
 257         bool "Support for hot-pluggable CPUs"
 258         depends on SPARC64 && SMP
 259         help
 260           Say Y here to experiment with turning CPUs off and on.  CPUs
 261           can be controlled through /sys/devices/system/cpu/cpu#.
 262           Say N if you want to disable CPU hotplug.
 263
 264 if SPARC64
 265 source "drivers/cpufreq/Kconfig"
 266 endif
 267
 268 config US3_MC
 269         tristate "UltraSPARC-III Memory Controller driver"
 270         depends on SPARC64
 271         default y
 272         help
 273           This adds a driver for the UltraSPARC-III memory controller.
 274           Loading this driver allows exact mnemonic strings to be
 275           printed in the event of a memory error, so that the faulty DIMM
 276           on the motherboard can be matched to the error.
 277
 278           If in doubt, say Y, as this information can be very useful.
 279
 280 # Global things across all Sun machines.
 281 config GENERIC_LOCKBREAK
 282         bool
 283         default y
 284         depends on SPARC64 && SMP && PREEMPT
 285
 286 config NUMA
 287         bool "NUMA support"
 288         depends on SPARC64 && SMP
 289
 290 config NODES_SHIFT
 291         int "Maximum NUMA Nodes (as a power of 2)"
 292         range 4 5 if SPARC64
 293         default "5"
 294         depends on NEED_MULTIPLE_NODES
 295         help
 296           Specify the maximum number of NUMA Nodes available on the target
 297           system.  Increases memory reserved to accommodate various tables.
 298
 299 # Some NUMA nodes have memory ranges that span
 300 # other nodes.  Even though a pfn is valid and
 301 # between a node's start and end pfns, it may not
 302 # reside on that node.  See memmap_init_zone()
 303 # for details.
 304 config NODES_SPAN_OTHER_NODES
 305         def_bool y
 306         depends on NEED_MULTIPLE_NODES
 307
 308 config ARCH_SELECT_MEMORY_MODEL
 309         def_bool y if SPARC64
 310
 311 config ARCH_SPARSEMEM_ENABLE
 312         def_bool y if SPARC64
 313         select SPARSEMEM_VMEMMAP_ENABLE
 314
 315 config ARCH_SPARSEMEM_DEFAULT
 316         def_bool y if SPARC64
 317
 318 config FORCE_MAX_ZONEORDER
 319         int "Maximum zone order"
 320         default "13"
 321         help
 322           The kernel memory allocator divides physically contiguous memory
 323           blocks into "zones", where each zone is a power of two number of
 324           pages.  This option selects the largest power of two that the kernel
 325           keeps in the memory allocator.  If you need to allocate very large
 326           blocks of physically contiguous memory, then you may need to
 327           increase this value.
 328
 329           This config option is actually maximum order plus one. For example,
 330           a value of 13 means that the largest free memory block is 2^12 pages.
 331
 332 if SPARC64
 333 source "kernel/power/Kconfig"
 334 endif
 335
 336 config SCHED_SMT
 337         bool "SMT (Hyperthreading) scheduler support"
 338         depends on SPARC64 && SMP
 339         default y
 340         help
 341           SMT scheduler support improves the CPU scheduler's decision making
 342           when dealing with SPARC cpus at a cost of slightly increased overhead
 343           in some places. If unsure say N here.
 344
 345 config SCHED_MC
 346         bool "Multi-core scheduler support"
 347         depends on SPARC64 && SMP
 348         default y
 349         help
 350           Multi-core scheduler support improves the CPU scheduler's decision
 351           making when dealing with multi-core CPU chips at a cost of slightly
 352           increased overhead in some places. If unsure say N here.
 353
 354 config CMDLINE_BOOL
 355         bool "Default bootloader kernel arguments"
 356         depends on SPARC64
 357
 358 config CMDLINE
 359         string "Initial kernel command string"
 360         depends on CMDLINE_BOOL
 361         default "console=ttyS0,9600 root=/dev/sda1"
 362         help
 363           Say Y here if you want to be able to pass default arguments to
 364           the kernel. This will be overridden by the bootloader, if you
 365           use one (such as SILO). This is most useful if you want to boot
 366           a kernel from TFTP, and want default options to be available
 367           with having them passed on the command line.
 368
 369           NOTE: This option WILL override the PROM bootargs setting!
 370
 371 config SUN_PM
 372         bool
 373         default y if SPARC32
 374         help
 375           Enable power management and CPU standby features on supported
 376           SPARC platforms.
 377
 378 config SPARC_LED
 379         tristate "Sun4m LED driver"
 380         depends on SPARC32
 381         help
 382           This driver toggles the front-panel LED on sun4m systems
 383           in a user-specifiable manner.  Its state can be probed
 384           by reading /proc/led and its blinking mode can be changed
 385           via writes to /proc/led
 386
 387 config SERIAL_CONSOLE
 388         bool
 389         depends on SPARC32
 390         default y
 391         ---help---
 392           If you say Y here, it will be possible to use a serial port as the
 393           system console (the system console is the device which receives all
 394           kernel messages and warnings and which allows logins in single user
 395           mode). This could be useful if some terminal or printer is connected
 396           to that serial port.
 397
 398           Even if you say Y here, the currently visible virtual console
 399           (/dev/tty0) will still be used as the system console by default, but
 400           you can alter that using a kernel command line option such as
 401           "console=ttyS1". (Try "man bootparam" or see the documentation of
 402           your boot loader (silo) about how to pass options to the kernel at
 403           boot time.)
 404
 405           If you don't have a graphics card installed and you say Y here, the
 406           kernel will automatically use the first serial line, /dev/ttyS0, as
 407           system console.
 408
 409           If unsure, say N.
 410
 411 config SPARC_LEON
 412         bool "Sparc Leon processor family"
 413         depends on SPARC32
 414         select USB_EHCI_BIG_ENDIAN_MMIO
 415         select USB_EHCI_BIG_ENDIAN_DESC
 416         select USB_UHCI_BIG_ENDIAN_MMIO
 417         select USB_UHCI_BIG_ENDIAN_DESC
 418         ---help---
 419           If you say Y here if you are running on a SPARC-LEON processor.
 420           The LEON processor is a synthesizable VHDL model of the
 421           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 422           IP cores that are distributed under GPL. GRLIB can be downloaded
 423           from www.gaisler.com. You can download a sparc-linux cross-compilation
 424           toolchain at www.gaisler.com.
 425
 426 if SPARC_LEON
 427 menu "U-Boot options"
 428
 429 config UBOOT_LOAD_ADDR
 430         hex "uImage Load Address"
 431         default 0x40004000
 432         ---help---
 433          U-Boot kernel load address, the address in physical address space
 434          where u-boot will place the Linux kernel before booting it.
 435          This address is normally the base address of main memory + 0x4000.
 436
 437 config UBOOT_FLASH_ADDR
 438         hex "uImage.o Load Address"
 439         default 0x00080000
 440         ---help---
 441          Optional setting only affecting the uImage.o ELF-image used to
 442          download the uImage file to the target using a ELF-loader other than
 443          U-Boot. It may for example be used to download an uImage to FLASH with
 444          the GRMON utility before even starting u-boot.
 445
 446 config UBOOT_ENTRY_ADDR
 447         hex "uImage Entry Address"
 448         default 0xf0004000
 449         ---help---
 450          Do not change this unless you know what you're doing. This is
 451          hardcoded by the SPARC32 and LEON port.
 452
 453          This is the virtual address u-boot jumps to when booting the Linux
 454          Kernel.
 455
 456 endmenu
 457 endif
 458
 459 endmenu
 460
 461 menu "Bus options (PCI etc.)"
 462 config SBUS
 463         bool
 464         default y
 465
 466 config SBUSCHAR
 467         bool
 468         default y
 469
 470 config SUN_LDOMS
 471         bool "Sun Logical Domains support"
 472         depends on SPARC64
 473         help
 474           Say Y here is you want to support virtual devices via
 475           Logical Domains.
 476
 477 config PCIC_PCI
 478         bool
 479         depends on PCI && SPARC32 && !SPARC_LEON
 480         default y
 481
 482 config LEON_PCI
 483         bool
 484         depends on PCI && SPARC_LEON
 485         default y
 486
 487 config SPARC_GRPCI1
 488         bool "GRPCI Host Bridge Support"
 489         depends on LEON_PCI
 490         default y
 491         help
 492           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 493           PCI host controller is typically found in GRLIB SPARC32/LEON
 494           systems. The driver has one property (all_pci_errors) controlled
 495           from the bootloader that makes the GRPCI to generate interrupts
 496           on detected PCI Parity and System errors.
 497
 498 config SPARC_GRPCI2
 499         bool "GRPCI2 Host Bridge Support"
 500         depends on LEON_PCI
 501         default y
 502         help
 503           Say Y here to include the GRPCI2 Host Bridge Driver.
 504
 505 config SUN_OPENPROMFS
 506         tristate "Openprom tree appears in /proc/openprom"
 507         help
 508           If you say Y, the OpenPROM device tree will be available as a
 509           virtual file system, which you can mount to /proc/openprom by "mount
 510           -t openpromfs none /proc/openprom".
 511
 512           To compile the /proc/openprom support as a module, choose M here: the
 513           module will be called openpromfs.
 514
 515           Only choose N if you know in advance that you will not need to modify
 516           OpenPROM settings on the running system.
 517
 518 # Makefile helpers
 519 config SPARC64_PCI
 520         bool
 521         default y
 522         depends on SPARC64 && PCI
 523
 524 config SPARC64_PCI_MSI
 525         bool
 526         default y
 527         depends on SPARC64_PCI && PCI_MSI
 528
 529 endmenu
 530
 531 config COMPAT
 532         bool
 533         depends on SPARC64
 534         default y
 535         select COMPAT_BINFMT_ELF
 536         select HAVE_UID16
 537         select ARCH_WANT_OLD_COMPAT_IPC
 538         select COMPAT_OLD_SIGACTION
 539
 540 config SYSVIPC_COMPAT
 541         bool
 542         depends on COMPAT && SYSVIPC
 543         default y
 544
 545 source "drivers/sbus/char/Kconfig"