1# $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $ 2# For a description of the syntax of this configuration file, 3# see the Configure script. 4# 5 6mainmenu "Linux/UltraSPARC Kernel Configuration" 7 8config SPARC 9 bool 10 default y 11 12config SPARC64 13 bool 14 default y 15 help 16 SPARC is a family of RISC microprocessors designed and marketed by 17 Sun Microsystems, incorporated. This port covers the newer 64-bit 18 UltraSPARC. The UltraLinux project maintains both the SPARC32 and 19 SPARC64 ports; its web page is available at 20 <http://www.ultralinux.org/>. 21 22config GENERIC_TIME 23 bool 24 default y 25 26config GENERIC_CLOCKEVENTS 27 bool 28 default y 29 30config 64BIT 31 def_bool y 32 33config MMU 34 bool 35 default y 36 37config QUICKLIST 38 bool 39 default y 40 41config STACKTRACE_SUPPORT 42 bool 43 default y 44 45config LOCKDEP_SUPPORT 46 bool 47 default y 48 49config ARCH_MAY_HAVE_PC_FDC 50 bool 51 default y 52 53config ARCH_HAS_ILOG2_U32 54 bool 55 default n 56 57config ARCH_HAS_ILOG2_U64 58 bool 59 default n 60 61config AUDIT_ARCH 62 bool 63 default y 64 65choice 66 prompt "Kernel page size" 67 default SPARC64_PAGE_SIZE_8KB 68 69config SPARC64_PAGE_SIZE_8KB 70 bool "8KB" 71 help 72 This lets you select the page size of the kernel. 73 74 8KB and 64KB work quite well, since Sparc ELF sections 75 provide for up to 64KB alignment. 76 77 Therefore, 512KB and 4MB are for expert hackers only. 78 79 If you don't know what to do, choose 8KB. 80 81config SPARC64_PAGE_SIZE_64KB 82 bool "64KB" 83 84config SPARC64_PAGE_SIZE_512KB 85 bool "512KB" 86 87config SPARC64_PAGE_SIZE_4MB 88 bool "4MB" 89 90endchoice 91 92config SECCOMP 93 bool "Enable seccomp to safely compute untrusted bytecode" 94 depends on PROC_FS 95 default y 96 help 97 This kernel feature is useful for number crunching applications 98 that may need to compute untrusted bytecode during their 99 execution. By using pipes or other transports made available to 100 the process as file descriptors supporting the read/write 101 syscalls, it's possible to isolate those applications in 102 their own address space using seccomp. Once seccomp is 103 enabled via /proc/<pid>/seccomp, it cannot be disabled 104 and the task is only allowed to execute a few safe syscalls 105 defined by each seccomp mode. 106 107 If unsure, say Y. Only embedded should say N here. 108 109source kernel/Kconfig.hz 110 111source "init/Kconfig" 112 113config SYSVIPC_COMPAT 114 bool 115 depends on COMPAT && SYSVIPC 116 default y 117 118config GENERIC_HARDIRQS 119 bool 120 default y 121 122menu "General machine setup" 123 124source "kernel/time/Kconfig" 125 126config SMP 127 bool "Symmetric multi-processing support" 128 ---help--- 129 This enables support for systems with more than one CPU. If you have 130 a system with only one CPU, say N. If you have a system with more than 131 one CPU, say Y. 132 133 If you say N here, the kernel will run on single and multiprocessor 134 machines, but will use only one CPU of a multiprocessor machine. If 135 you say Y here, the kernel will run on many, but not all, 136 singleprocessor machines. On a singleprocessor machine, the kernel 137 will run faster if you say N here. 138 139 People using multiprocessor machines who say Y here should also say 140 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 141 Management" code will be disabled if you say Y here. 142 143 See also the <file:Documentation/smp.txt>, 144 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 145 <http://www.tldp.org/docs.html#howto>. 146 147 If you don't know what to do here, say N. 148 149config NR_CPUS 150 int "Maximum number of CPUs (2-1024)" 151 range 2 1024 152 depends on SMP 153 default "64" 154 155source "drivers/cpufreq/Kconfig" 156 157config US3_FREQ 158 tristate "UltraSPARC-III CPU Frequency driver" 159 depends on CPU_FREQ 160 select CPU_FREQ_TABLE 161 help 162 This adds the CPUFreq driver for UltraSPARC-III processors. 163 164 For details, take a look at <file:Documentation/cpu-freq>. 165 166 If in doubt, say N. 167 168config US2E_FREQ 169 tristate "UltraSPARC-IIe CPU Frequency driver" 170 depends on CPU_FREQ 171 select CPU_FREQ_TABLE 172 help 173 This adds the CPUFreq driver for UltraSPARC-IIe processors. 174 175 For details, take a look at <file:Documentation/cpu-freq>. 176 177 If in doubt, say N. 178 179# Global things across all Sun machines. 180config RWSEM_GENERIC_SPINLOCK 181 bool 182 183config RWSEM_XCHGADD_ALGORITHM 184 bool 185 default y 186 187config GENERIC_FIND_NEXT_BIT 188 bool 189 default y 190 191config GENERIC_HWEIGHT 192 bool 193 default y if !ULTRA_HAS_POPULATION_COUNT 194 195config GENERIC_CALIBRATE_DELAY 196 bool 197 default y 198 199choice 200 prompt "SPARC64 Huge TLB Page Size" 201 depends on HUGETLB_PAGE 202 default HUGETLB_PAGE_SIZE_4MB 203 204config HUGETLB_PAGE_SIZE_4MB 205 bool "4MB" 206 207config HUGETLB_PAGE_SIZE_512K 208 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB 209 bool "512K" 210 211config HUGETLB_PAGE_SIZE_64K 212 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB 213 bool "64K" 214 215endchoice 216 217endmenu 218 219config ARCH_SELECT_MEMORY_MODEL 220 def_bool y 221 222config ARCH_SPARSEMEM_ENABLE 223 def_bool y 224 225config ARCH_SPARSEMEM_DEFAULT 226 def_bool y 227 select SPARSEMEM_STATIC 228 229source "mm/Kconfig" 230 231config ISA 232 bool 233 help 234 Find out whether you have ISA slots on your motherboard. ISA is the 235 name of a bus system, i.e. the way the CPU talks to the other stuff 236 inside your box. Other bus systems are PCI, EISA, MicroChannel 237 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 238 newer boards don't support it. If you have ISA, say Y, otherwise N. 239 240config ISAPNP 241 bool 242 help 243 Say Y here if you would like support for ISA Plug and Play devices. 244 Some information is in <file:Documentation/isapnp.txt>. 245 246 To compile this driver as a module, choose M here: the 247 module will be called isapnp. 248 249 If unsure, say Y. 250 251config EISA 252 bool 253 ---help--- 254 The Extended Industry Standard Architecture (EISA) bus was 255 developed as an open alternative to the IBM MicroChannel bus. 256 257 The EISA bus provided some of the features of the IBM MicroChannel 258 bus while maintaining backward compatibility with cards made for 259 the older ISA bus. The EISA bus saw limited use between 1988 and 260 1995 when it was made obsolete by the PCI bus. 261 262 Say Y here if you are building a kernel for an EISA-based machine. 263 264 Otherwise, say N. 265 266config MCA 267 bool 268 help 269 MicroChannel Architecture is found in some IBM PS/2 machines and 270 laptops. It is a bus system similar to PCI or ISA. See 271 <file:Documentation/mca.txt> (and especially the web page given 272 there) before attempting to build an MCA bus kernel. 273 274config PCMCIA 275 tristate 276 ---help--- 277 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux 278 computer. These are credit-card size devices such as network cards, 279 modems or hard drives often used with laptops computers. There are 280 actually two varieties of these cards: the older 16 bit PCMCIA cards 281 and the newer 32 bit CardBus cards. If you want to use CardBus 282 cards, you need to say Y here and also to "CardBus support" below. 283 284 To use your PC-cards, you will need supporting software from David 285 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> 286 for location). Please also read the PCMCIA-HOWTO, available from 287 <http://www.tldp.org/docs.html#howto>. 288 289 To compile this driver as modules, choose M here: the 290 modules will be called pcmcia_core and ds. 291 292config SBUS 293 bool 294 default y 295 296config SBUSCHAR 297 bool 298 default y 299 300config SUN_AUXIO 301 bool 302 default y 303 304config SUN_IO 305 bool 306 default y 307 308config PCI 309 bool "PCI support" 310 select ARCH_SUPPORTS_MSI 311 help 312 Find out whether you have a PCI motherboard. PCI is the name of a 313 bus system, i.e. the way the CPU talks to the other stuff inside 314 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 315 VESA. If you have PCI, say Y, otherwise N. 316 317 The PCI-HOWTO, available from 318 <http://www.tldp.org/docs.html#howto>, contains valuable 319 information about which PCI hardware does work under Linux and which 320 doesn't. 321 322config PCI_DOMAINS 323 bool 324 default PCI 325 326source "drivers/pci/Kconfig" 327 328config SUN_OPENPROMFS 329 tristate "Openprom tree appears in /proc/openprom" 330 help 331 If you say Y, the OpenPROM device tree will be available as a 332 virtual file system, which you can mount to /proc/openprom by "mount 333 -t openpromfs none /proc/openprom". 334 335 To compile the /proc/openprom support as a module, choose M here: the 336 module will be called openpromfs. If unsure, choose M. 337 338config SPARC32_COMPAT 339 bool "Kernel support for Linux/Sparc 32bit binary compatibility" 340 help 341 This allows you to run 32-bit binaries on your Ultra. 342 Everybody wants this; say Y. 343 344config COMPAT 345 bool 346 depends on SPARC32_COMPAT 347 default y 348 349config BINFMT_ELF32 350 bool "Kernel support for 32-bit ELF binaries" 351 depends on SPARC32_COMPAT 352 help 353 This allows you to run 32-bit Linux/ELF binaries on your Ultra. 354 Everybody wants this; say Y. 355 356config BINFMT_AOUT32 357 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries" 358 depends on SPARC32_COMPAT 359 help 360 This allows you to run 32-bit a.out format binaries on your Ultra. 361 If you want to run SunOS binaries (see SunOS binary emulation below) 362 or other a.out binaries, say Y. If unsure, say N. 363 364menu "Executable file formats" 365 366source "fs/Kconfig.binfmt" 367 368config SUNOS_EMUL 369 bool "SunOS binary emulation" 370 depends on BINFMT_AOUT32 371 help 372 This allows you to run most SunOS binaries. If you want to do this, 373 say Y here and place appropriate files in /usr/gnemul/sunos. See 374 <http://www.ultralinux.org/faq.html> for more information. If you 375 want to run SunOS binaries on an Ultra you must also say Y to 376 "Kernel support for 32-bit a.out binaries" above. 377 378config SOLARIS_EMUL 379 tristate "Solaris binary emulation (EXPERIMENTAL)" 380 depends on SPARC32_COMPAT && EXPERIMENTAL 381 help 382 This is experimental code which will enable you to run (many) 383 Solaris binaries on your SPARC Linux machine. 384 385 To compile this code as a module, choose M here: the 386 module will be called solaris. 387 388endmenu 389 390config SCHED_SMT 391 bool "SMT (Hyperthreading) scheduler support" 392 depends on SMP 393 default y 394 help 395 SMT scheduler support improves the CPU scheduler's decision making 396 when dealing with UltraSPARC cpus at a cost of slightly increased 397 overhead in some places. If unsure say N here. 398 399config SCHED_MC 400 bool "Multi-core scheduler support" 401 depends on SMP 402 default y 403 help 404 Multi-core scheduler support improves the CPU scheduler's decision 405 making when dealing with multi-core CPU chips at a cost of slightly 406 increased overhead in some places. If unsure say N here. 407 408source "kernel/Kconfig.preempt" 409 410config CMDLINE_BOOL 411 bool "Default bootloader kernel arguments" 412 413config CMDLINE 414 string "Initial kernel command string" 415 depends on CMDLINE_BOOL 416 default "console=ttyS0,9600 root=/dev/sda1" 417 help 418 Say Y here if you want to be able to pass default arguments to 419 the kernel. This will be overridden by the bootloader, if you 420 use one (such as SILO). This is most useful if you want to boot 421 a kernel from TFTP, and want default options to be available 422 with having them passed on the command line. 423 424 NOTE: This option WILL override the PROM bootargs setting! 425 426source "net/Kconfig" 427 428source "drivers/Kconfig" 429 430source "drivers/sbus/char/Kconfig" 431 432source "drivers/fc4/Kconfig" 433 434source "fs/Kconfig" 435 436menu "Instrumentation Support" 437 depends on EXPERIMENTAL 438 439source "arch/sparc64/oprofile/Kconfig" 440 441config KPROBES 442 bool "Kprobes (EXPERIMENTAL)" 443 depends on KALLSYMS && EXPERIMENTAL && MODULES 444 help 445 Kprobes allows you to trap at almost any kernel address and 446 execute a callback function. register_kprobe() establishes 447 a probepoint and specifies the callback. Kprobes is useful 448 for kernel debugging, non-intrusive instrumentation and testing. 449 If in doubt, say "N". 450endmenu 451 452source "arch/sparc64/Kconfig.debug" 453 454source "security/Kconfig" 455 456source "crypto/Kconfig" 457 458source "lib/Kconfig" 459