1# For a description of the syntax of this configuration file, 2# see Documentation/kbuild/kconfig-language.txt. 3# 4 5mainmenu "Linux/SPARC Kernel Configuration" 6 7config 64BIT 8 bool "64-bit kernel" if ARCH = "sparc" 9 default ARCH = "sparc64" 10 help 11 SPARC is a family of RISC microprocessors designed and marketed by 12 Sun Microsystems, incorporated. They are very widely found in Sun 13 workstations and clones. 14 15 Say yes to build a 64-bit kernel - formerly known as sparc64 16 Say no to build a 32-bit kernel - formerly known as sparc 17 18config SPARC 19 bool 20 default y 21 select OF 22 select HAVE_IDE 23 select HAVE_OPROFILE 24 select HAVE_ARCH_KGDB if !SMP || SPARC64 25 select HAVE_ARCH_TRACEHOOK 26 select ARCH_WANT_OPTIONAL_GPIOLIB 27 select RTC_CLASS 28 select RTC_DRV_M48T59 29 select HAVE_IRQ_WORK 30 select HAVE_PERF_EVENTS 31 select PERF_USE_VMALLOC 32 select HAVE_DMA_ATTRS 33 select HAVE_DMA_API_DEBUG 34 select HAVE_ARCH_JUMP_LABEL 35 36config SPARC32 37 def_bool !64BIT 38 39config SPARC64 40 def_bool 64BIT 41 select ARCH_SUPPORTS_MSI 42 select HAVE_FUNCTION_TRACER 43 select HAVE_FUNCTION_GRAPH_TRACER 44 select HAVE_FUNCTION_GRAPH_FP_TEST 45 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 46 select HAVE_KRETPROBES 47 select HAVE_KPROBES 48 select HAVE_MEMBLOCK 49 select HAVE_SYSCALL_WRAPPERS 50 select HAVE_DYNAMIC_FTRACE 51 select HAVE_FTRACE_MCOUNT_RECORD 52 select HAVE_SYSCALL_TRACEPOINTS 53 select USE_GENERIC_SMP_HELPERS if SMP 54 select RTC_DRV_CMOS 55 select RTC_DRV_BQ4802 56 select RTC_DRV_SUN4V 57 select RTC_DRV_STARFIRE 58 select HAVE_IRQ_WORK 59 select HAVE_PERF_EVENTS 60 select PERF_USE_VMALLOC 61 62config ARCH_DEFCONFIG 63 string 64 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 65 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 66 67# CONFIG_BITS can be used at source level to get 32/64 bits 68config BITS 69 int 70 default 32 if SPARC32 71 default 64 if SPARC64 72 73config ARCH_USES_GETTIMEOFFSET 74 bool 75 default y if SPARC32 76 77config GENERIC_CMOS_UPDATE 78 bool 79 default y 80 81config GENERIC_CLOCKEVENTS 82 bool 83 default y if SPARC64 84 85config IOMMU_HELPER 86 bool 87 default y if SPARC64 88 89config QUICKLIST 90 bool 91 default y if SPARC64 92 93config STACKTRACE_SUPPORT 94 bool 95 default y if SPARC64 96 97config LOCKDEP_SUPPORT 98 bool 99 default y if SPARC64 100 101config HAVE_LATENCYTOP_SUPPORT 102 bool 103 default y if SPARC64 104 105config AUDIT_ARCH 106 bool 107 default y 108 109config HAVE_SETUP_PER_CPU_AREA 110 def_bool y if SPARC64 111 112config NEED_PER_CPU_EMBED_FIRST_CHUNK 113 def_bool y if SPARC64 114 115config NEED_PER_CPU_PAGE_FIRST_CHUNK 116 def_bool y if SPARC64 117 118config GENERIC_HARDIRQS_NO__DO_IRQ 119 bool 120 def_bool y if SPARC64 121 122config MMU 123 bool 124 default y 125 126config HIGHMEM 127 bool 128 default y if SPARC32 129 130config ZONE_DMA 131 bool 132 default y if SPARC32 133 134config NEED_DMA_MAP_STATE 135 def_bool y 136 137config NEED_SG_DMA_LENGTH 138 def_bool y 139 140config GENERIC_ISA_DMA 141 bool 142 default y if SPARC32 143 144config GENERIC_GPIO 145 bool 146 help 147 Generic GPIO API support 148 149config ARCH_NO_VIRT_TO_BUS 150 def_bool y 151 152config ARCH_SUPPORTS_DEBUG_PAGEALLOC 153 def_bool y if SPARC64 154 155source "init/Kconfig" 156 157source "kernel/Kconfig.freezer" 158 159menu "Processor type and features" 160 161config SMP 162 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 163 ---help--- 164 This enables support for systems with more than one CPU. If you have 165 a system with only one CPU, say N. If you have a system with more 166 than one CPU, say Y. 167 168 If you say N here, the kernel will run on single and multiprocessor 169 machines, but will use only one CPU of a multiprocessor machine. If 170 you say Y here, the kernel will run on many, but not all, 171 singleprocessor machines. On a singleprocessor machine, the kernel 172 will run faster if you say N here. 173 174 People using multiprocessor machines who say Y here should also say 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 176 Management" code will be disabled if you say Y here. 177 178 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 179 available at <http://www.tldp.org/docs.html#howto>. 180 181 If you don't know what to do here, say N. 182 183config NR_CPUS 184 int "Maximum number of CPUs" 185 depends on SMP 186 range 2 32 if SPARC32 187 range 2 1024 if SPARC64 188 default 32 if SPARC32 189 default 64 if SPARC64 190 191source kernel/Kconfig.hz 192 193config RWSEM_GENERIC_SPINLOCK 194 bool 195 default y if SPARC32 196 197config RWSEM_XCHGADD_ALGORITHM 198 bool 199 default y if SPARC64 200 201config GENERIC_FIND_NEXT_BIT 202 bool 203 default y 204 205config GENERIC_HWEIGHT 206 bool 207 default y if !ULTRA_HAS_POPULATION_COUNT 208 209config GENERIC_CALIBRATE_DELAY 210 bool 211 default y 212 213config ARCH_MAY_HAVE_PC_FDC 214 bool 215 default y 216 217config EMULATED_CMPXCHG 218 bool 219 default y if SPARC32 220 help 221 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 222 is emulated, and therefore it is not completely atomic. 223 224# Makefile helpers 225config SPARC32_SMP 226 bool 227 default y 228 depends on SPARC32 && SMP 229 230config SPARC64_SMP 231 bool 232 default y 233 depends on SPARC64 && SMP 234 235config EARLYFB 236 bool "Support for early boot text console" 237 default y 238 depends on SPARC64 239 help 240 Say Y here to enable a faster early framebuffer boot console. 241 242choice 243 prompt "Kernel page size" if SPARC64 244 default SPARC64_PAGE_SIZE_8KB 245 246config SPARC64_PAGE_SIZE_8KB 247 bool "8KB" 248 help 249 This lets you select the page size of the kernel. 250 251 8KB and 64KB work quite well, since SPARC ELF sections 252 provide for up to 64KB alignment. 253 254 If you don't know what to do, choose 8KB. 255 256config SPARC64_PAGE_SIZE_64KB 257 bool "64KB" 258 259endchoice 260 261config SECCOMP 262 bool "Enable seccomp to safely compute untrusted bytecode" 263 depends on SPARC64 && PROC_FS 264 default y 265 help 266 This kernel feature is useful for number crunching applications 267 that may need to compute untrusted bytecode during their 268 execution. By using pipes or other transports made available to 269 the process as file descriptors supporting the read/write 270 syscalls, it's possible to isolate those applications in 271 their own address space using seccomp. Once seccomp is 272 enabled via /proc/<pid>/seccomp, it cannot be disabled 273 and the task is only allowed to execute a few safe syscalls 274 defined by each seccomp mode. 275 276 If unsure, say Y. Only embedded should say N here. 277 278config HOTPLUG_CPU 279 bool "Support for hot-pluggable CPUs" 280 depends on SPARC64 && SMP 281 select HOTPLUG 282 help 283 Say Y here to experiment with turning CPUs off and on. CPUs 284 can be controlled through /sys/devices/system/cpu/cpu#. 285 Say N if you want to disable CPU hotplug. 286 287config GENERIC_HARDIRQS 288 bool 289 default y if SPARC64 290 291source "kernel/time/Kconfig" 292 293if SPARC64 294source "drivers/cpufreq/Kconfig" 295 296config US3_FREQ 297 tristate "UltraSPARC-III CPU Frequency driver" 298 depends on CPU_FREQ 299 select CPU_FREQ_TABLE 300 help 301 This adds the CPUFreq driver for UltraSPARC-III processors. 302 303 For details, take a look at <file:Documentation/cpu-freq>. 304 305 If in doubt, say N. 306 307config US2E_FREQ 308 tristate "UltraSPARC-IIe CPU Frequency driver" 309 depends on CPU_FREQ 310 select CPU_FREQ_TABLE 311 help 312 This adds the CPUFreq driver for UltraSPARC-IIe processors. 313 314 For details, take a look at <file:Documentation/cpu-freq>. 315 316 If in doubt, say N. 317 318endif 319 320config US3_MC 321 tristate "UltraSPARC-III Memory Controller driver" 322 depends on SPARC64 323 default y 324 help 325 This adds a driver for the UltraSPARC-III memory controller. 326 Loading this driver allows exact mnemonic strings to be 327 printed in the event of a memory error, so that the faulty DIMM 328 on the motherboard can be matched to the error. 329 330 If in doubt, say Y, as this information can be very useful. 331 332# Global things across all Sun machines. 333config GENERIC_LOCKBREAK 334 bool 335 default y 336 depends on SPARC64 && SMP && PREEMPT 337 338choice 339 prompt "SPARC64 Huge TLB Page Size" 340 depends on SPARC64 && HUGETLB_PAGE 341 default HUGETLB_PAGE_SIZE_4MB 342 343config HUGETLB_PAGE_SIZE_4MB 344 bool "4MB" 345 346config HUGETLB_PAGE_SIZE_512K 347 bool "512K" 348 349config HUGETLB_PAGE_SIZE_64K 350 depends on !SPARC64_PAGE_SIZE_64KB 351 bool "64K" 352 353endchoice 354 355config NUMA 356 bool "NUMA support" 357 depends on SPARC64 && SMP 358 359config NODES_SHIFT 360 int 361 default "4" 362 depends on NEED_MULTIPLE_NODES 363 364# Some NUMA nodes have memory ranges that span 365# other nodes. Even though a pfn is valid and 366# between a node's start and end pfns, it may not 367# reside on that node. See memmap_init_zone() 368# for details. 369config NODES_SPAN_OTHER_NODES 370 def_bool y 371 depends on NEED_MULTIPLE_NODES 372 373config ARCH_POPULATES_NODE_MAP 374 def_bool y if SPARC64 375 376config ARCH_SELECT_MEMORY_MODEL 377 def_bool y if SPARC64 378 379config ARCH_SPARSEMEM_ENABLE 380 def_bool y if SPARC64 381 select SPARSEMEM_VMEMMAP_ENABLE 382 383config ARCH_SPARSEMEM_DEFAULT 384 def_bool y if SPARC64 385 386source "mm/Kconfig" 387 388config SCHED_SMT 389 bool "SMT (Hyperthreading) scheduler support" 390 depends on SPARC64 && SMP 391 default y 392 help 393 SMT scheduler support improves the CPU scheduler's decision making 394 when dealing with SPARC cpus at a cost of slightly increased overhead 395 in some places. If unsure say N here. 396 397config SCHED_MC 398 bool "Multi-core scheduler support" 399 depends on SPARC64 && SMP 400 default y 401 help 402 Multi-core scheduler support improves the CPU scheduler's decision 403 making when dealing with multi-core CPU chips at a cost of slightly 404 increased overhead in some places. If unsure say N here. 405 406if SPARC64 407source "kernel/Kconfig.preempt" 408endif 409 410config CMDLINE_BOOL 411 bool "Default bootloader kernel arguments" 412 depends on SPARC64 413 414config CMDLINE 415 string "Initial kernel command string" 416 depends on CMDLINE_BOOL 417 default "console=ttyS0,9600 root=/dev/sda1" 418 help 419 Say Y here if you want to be able to pass default arguments to 420 the kernel. This will be overridden by the bootloader, if you 421 use one (such as SILO). This is most useful if you want to boot 422 a kernel from TFTP, and want default options to be available 423 with having them passed on the command line. 424 425 NOTE: This option WILL override the PROM bootargs setting! 426 427config SUN_PM 428 bool 429 default y if SPARC32 430 help 431 Enable power management and CPU standby features on supported 432 SPARC platforms. 433 434config SPARC_LED 435 tristate "Sun4m LED driver" 436 depends on SPARC32 437 help 438 This driver toggles the front-panel LED on sun4m systems 439 in a user-specifiable manner. Its state can be probed 440 by reading /proc/led and its blinking mode can be changed 441 via writes to /proc/led 442 443config SERIAL_CONSOLE 444 bool 445 depends on SPARC32 446 default y 447 ---help--- 448 If you say Y here, it will be possible to use a serial port as the 449 system console (the system console is the device which receives all 450 kernel messages and warnings and which allows logins in single user 451 mode). This could be useful if some terminal or printer is connected 452 to that serial port. 453 454 Even if you say Y here, the currently visible virtual console 455 (/dev/tty0) will still be used as the system console by default, but 456 you can alter that using a kernel command line option such as 457 "console=ttyS1". (Try "man bootparam" or see the documentation of 458 your boot loader (silo) about how to pass options to the kernel at 459 boot time.) 460 461 If you don't have a graphics card installed and you say Y here, the 462 kernel will automatically use the first serial line, /dev/ttyS0, as 463 system console. 464 465 If unsure, say N. 466 467config SPARC_LEON 468 bool "Sparc Leon processor family" 469 depends on SPARC32 470 ---help--- 471 If you say Y here if you are running on a SPARC-LEON processor. 472 The LEON processor is a synthesizable VHDL model of the 473 SPARC-v8 standard. LEON is part of the GRLIB collection of 474 IP cores that are distributed under GPL. GRLIB can be downloaded 475 from www.gaisler.com. You can download a sparc-linux cross-compilation 476 toolchain at www.gaisler.com. 477 478endmenu 479 480menu "Bus options (PCI etc.)" 481config SBUS 482 bool 483 default y 484 485config SBUSCHAR 486 bool 487 default y 488 489config SUN_LDOMS 490 bool "Sun Logical Domains support" 491 depends on SPARC64 492 help 493 Say Y here is you want to support virtual devices via 494 Logical Domains. 495 496config PCI 497 bool "Support for PCI and PS/2 keyboard/mouse" 498 help 499 Find out whether your system includes a PCI bus. PCI is the name of 500 a bus system, i.e. the way the CPU talks to the other stuff inside 501 your box. If you say Y here, the kernel will include drivers and 502 infrastructure code to support PCI bus devices. 503 504 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 505 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 506 All of these platforms are extremely obscure, so say N if unsure. 507 508config PCI_DOMAINS 509 def_bool PCI if SPARC64 510 511config PCI_SYSCALL 512 def_bool PCI 513 514source "drivers/pci/Kconfig" 515 516source "drivers/pcmcia/Kconfig" 517 518config SUN_OPENPROMFS 519 tristate "Openprom tree appears in /proc/openprom" 520 help 521 If you say Y, the OpenPROM device tree will be available as a 522 virtual file system, which you can mount to /proc/openprom by "mount 523 -t openpromfs none /proc/openprom". 524 525 To compile the /proc/openprom support as a module, choose M here: the 526 module will be called openpromfs. 527 528 Only choose N if you know in advance that you will not need to modify 529 OpenPROM settings on the running system. 530 531# Makefile helpers 532config SPARC32_PCI 533 bool 534 default y 535 depends on SPARC32 && PCI 536 537config SPARC64_PCI 538 bool 539 default y 540 depends on SPARC64 && PCI 541 542endmenu 543 544menu "Executable file formats" 545 546source "fs/Kconfig.binfmt" 547 548config COMPAT 549 bool 550 depends on SPARC64 551 default y 552 select COMPAT_BINFMT_ELF 553 554config SYSVIPC_COMPAT 555 bool 556 depends on COMPAT && SYSVIPC 557 default y 558 559endmenu 560 561source "net/Kconfig" 562 563source "drivers/Kconfig" 564 565source "drivers/sbus/char/Kconfig" 566 567source "fs/Kconfig" 568 569source "arch/sparc/Kconfig.debug" 570 571source "security/Kconfig" 572 573source "crypto/Kconfig" 574 575source "lib/Kconfig" 576