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