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 select HAVE_OPROFILE 12 select HAVE_KPROBES 13 select HAVE_KRETPROBES 14 15config SPARC64 16 bool 17 default y 18 select HAVE_IDE 19 help 20 SPARC is a family of RISC microprocessors designed and marketed by 21 Sun Microsystems, incorporated. This port covers the newer 64-bit 22 UltraSPARC. The UltraLinux project maintains both the SPARC32 and 23 SPARC64 ports; its web page is available at 24 <http://www.ultralinux.org/>. 25 26config GENERIC_TIME 27 bool 28 default y 29 30config GENERIC_CMOS_UPDATE 31 bool 32 default y 33 34config GENERIC_CLOCKEVENTS 35 bool 36 default y 37 38config 64BIT 39 def_bool y 40 41config MMU 42 bool 43 default y 44 45config IOMMU_HELPER 46 bool 47 default y 48 49config QUICKLIST 50 bool 51 default y 52 53config STACKTRACE_SUPPORT 54 bool 55 default y 56 57config LOCKDEP_SUPPORT 58 bool 59 default y 60 61config ARCH_MAY_HAVE_PC_FDC 62 bool 63 default y 64 65config ARCH_HAS_ILOG2_U32 66 bool 67 default n 68 69config ARCH_HAS_ILOG2_U64 70 bool 71 default n 72 73config AUDIT_ARCH 74 bool 75 default y 76 77config HAVE_SETUP_PER_CPU_AREA 78 def_bool y 79 80config ARCH_NO_VIRT_TO_BUS 81 def_bool y 82 83config OF 84 def_bool y 85 86config GENERIC_HARDIRQS_NO__DO_IRQ 87 bool 88 def_bool y 89 90config ARCH_SUPPORTS_AOUT 91 def_bool y 92 93choice 94 prompt "Kernel page size" 95 default SPARC64_PAGE_SIZE_8KB 96 97config SPARC64_PAGE_SIZE_8KB 98 bool "8KB" 99 help 100 This lets you select the page size of the kernel. 101 102 8KB and 64KB work quite well, since Sparc ELF sections 103 provide for up to 64KB alignment. 104 105 Therefore, 512KB and 4MB are for expert hackers only. 106 107 If you don't know what to do, choose 8KB. 108 109config SPARC64_PAGE_SIZE_64KB 110 bool "64KB" 111 112config SPARC64_PAGE_SIZE_512KB 113 bool "512KB" 114 115config SPARC64_PAGE_SIZE_4MB 116 bool "4MB" 117 118endchoice 119 120config SECCOMP 121 bool "Enable seccomp to safely compute untrusted bytecode" 122 depends on PROC_FS 123 default y 124 help 125 This kernel feature is useful for number crunching applications 126 that may need to compute untrusted bytecode during their 127 execution. By using pipes or other transports made available to 128 the process as file descriptors supporting the read/write 129 syscalls, it's possible to isolate those applications in 130 their own address space using seccomp. Once seccomp is 131 enabled via /proc/<pid>/seccomp, it cannot be disabled 132 and the task is only allowed to execute a few safe syscalls 133 defined by each seccomp mode. 134 135 If unsure, say Y. Only embedded should say N here. 136 137source kernel/Kconfig.hz 138 139config HOTPLUG_CPU 140 bool "Support for hot-pluggable CPUs" 141 depends on SMP 142 select HOTPLUG 143 ---help--- 144 Say Y here to experiment with turning CPUs off and on. CPUs 145 can be controlled through /sys/devices/system/cpu/cpu#. 146 Say N if you want to disable CPU hotplug. 147 148source "init/Kconfig" 149 150config SYSVIPC_COMPAT 151 bool 152 depends on COMPAT && SYSVIPC 153 default y 154 155config GENERIC_HARDIRQS 156 bool 157 default y 158 159menu "General machine setup" 160 161source "kernel/time/Kconfig" 162 163config SMP 164 bool "Symmetric multi-processing support" 165 ---help--- 166 This enables support for systems with more than one CPU. If you have 167 a system with only one CPU, say N. If you have a system with more than 168 one CPU, say Y. 169 170 If you say N here, the kernel will run on single and multiprocessor 171 machines, but will use only one CPU of a multiprocessor machine. If 172 you say Y here, the kernel will run on many, but not all, 173 singleprocessor machines. On a singleprocessor machine, the kernel 174 will run faster if you say N here. 175 176 People using multiprocessor machines who say Y here should also say 177 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 178 Management" code will be disabled if you say Y here. 179 180 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 181 available at <http://www.tldp.org/docs.html#howto>. 182 183 If you don't know what to do here, say N. 184 185config NR_CPUS 186 int "Maximum number of CPUs (2-1024)" 187 range 2 1024 188 depends on SMP 189 default "64" 190 191source "drivers/cpufreq/Kconfig" 192 193config US3_FREQ 194 tristate "UltraSPARC-III CPU Frequency driver" 195 depends on CPU_FREQ 196 select CPU_FREQ_TABLE 197 help 198 This adds the CPUFreq driver for UltraSPARC-III processors. 199 200 For details, take a look at <file:Documentation/cpu-freq>. 201 202 If in doubt, say N. 203 204config US2E_FREQ 205 tristate "UltraSPARC-IIe CPU Frequency driver" 206 depends on CPU_FREQ 207 select CPU_FREQ_TABLE 208 help 209 This adds the CPUFreq driver for UltraSPARC-IIe processors. 210 211 For details, take a look at <file:Documentation/cpu-freq>. 212 213 If in doubt, say N. 214 215# Global things across all Sun machines. 216config GENERIC_LOCKBREAK 217 bool 218 default y 219 depends on SMP && PREEMPT 220 221config RWSEM_GENERIC_SPINLOCK 222 bool 223 224config RWSEM_XCHGADD_ALGORITHM 225 bool 226 default y 227 228config GENERIC_FIND_NEXT_BIT 229 bool 230 default y 231 232config GENERIC_HWEIGHT 233 bool 234 default y if !ULTRA_HAS_POPULATION_COUNT 235 236config GENERIC_CALIBRATE_DELAY 237 bool 238 default y 239 240choice 241 prompt "SPARC64 Huge TLB Page Size" 242 depends on HUGETLB_PAGE 243 default HUGETLB_PAGE_SIZE_4MB 244 245config HUGETLB_PAGE_SIZE_4MB 246 bool "4MB" 247 248config HUGETLB_PAGE_SIZE_512K 249 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB 250 bool "512K" 251 252config HUGETLB_PAGE_SIZE_64K 253 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB 254 bool "64K" 255 256endchoice 257 258endmenu 259 260config ARCH_SELECT_MEMORY_MODEL 261 def_bool y 262 263config ARCH_SPARSEMEM_ENABLE 264 def_bool y 265 select SPARSEMEM_VMEMMAP_ENABLE 266 267config ARCH_SPARSEMEM_DEFAULT 268 def_bool y 269 270source "mm/Kconfig" 271 272config ISA 273 bool 274 help 275 Find out whether you have ISA slots on your motherboard. ISA is the 276 name of a bus system, i.e. the way the CPU talks to the other stuff 277 inside your box. Other bus systems are PCI, EISA, MicroChannel 278 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 279 newer boards don't support it. If you have ISA, say Y, otherwise N. 280 281config ISAPNP 282 bool 283 help 284 Say Y here if you would like support for ISA Plug and Play devices. 285 Some information is in <file:Documentation/isapnp.txt>. 286 287 To compile this driver as a module, choose M here: the 288 module will be called isapnp. 289 290 If unsure, say Y. 291 292config EISA 293 bool 294 ---help--- 295 The Extended Industry Standard Architecture (EISA) bus was 296 developed as an open alternative to the IBM MicroChannel bus. 297 298 The EISA bus provided some of the features of the IBM MicroChannel 299 bus while maintaining backward compatibility with cards made for 300 the older ISA bus. The EISA bus saw limited use between 1988 and 301 1995 when it was made obsolete by the PCI bus. 302 303 Say Y here if you are building a kernel for an EISA-based machine. 304 305 Otherwise, say N. 306 307config MCA 308 bool 309 help 310 MicroChannel Architecture is found in some IBM PS/2 machines and 311 laptops. It is a bus system similar to PCI or ISA. See 312 <file:Documentation/mca.txt> (and especially the web page given 313 there) before attempting to build an MCA bus kernel. 314 315config PCMCIA 316 tristate 317 ---help--- 318 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux 319 computer. These are credit-card size devices such as network cards, 320 modems or hard drives often used with laptops computers. There are 321 actually two varieties of these cards: the older 16 bit PCMCIA cards 322 and the newer 32 bit CardBus cards. If you want to use CardBus 323 cards, you need to say Y here and also to "CardBus support" below. 324 325 To use your PC-cards, you will need supporting software from David 326 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> 327 for location). Please also read the PCMCIA-HOWTO, available from 328 <http://www.tldp.org/docs.html#howto>. 329 330 To compile this driver as modules, choose M here: the 331 modules will be called pcmcia_core and ds. 332 333config SBUS 334 bool 335 default y 336 337config SBUSCHAR 338 bool 339 default y 340 341config SUN_AUXIO 342 bool 343 default y 344 345config SUN_IO 346 bool 347 default y 348 349config SUN_LDOMS 350 bool "Sun Logical Domains support" 351 help 352 Say Y here is you want to support virtual devices via 353 Logical Domains. 354 355config PCI 356 bool "PCI support" 357 select ARCH_SUPPORTS_MSI 358 help 359 Find out whether you have a PCI motherboard. PCI is the name of a 360 bus system, i.e. the way the CPU talks to the other stuff inside 361 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 362 VESA. If you have PCI, say Y, otherwise N. 363 364config PCI_DOMAINS 365 def_bool PCI 366 367config PCI_SYSCALL 368 def_bool PCI 369 370source "drivers/pci/Kconfig" 371 372config SUN_OPENPROMFS 373 tristate "Openprom tree appears in /proc/openprom" 374 help 375 If you say Y, the OpenPROM device tree will be available as a 376 virtual file system, which you can mount to /proc/openprom by "mount 377 -t openpromfs none /proc/openprom". 378 379 To compile the /proc/openprom support as a module, choose M here: the 380 module will be called openpromfs. If unsure, choose M. 381 382config SPARC32_COMPAT 383 bool "Kernel support for Linux/Sparc 32bit binary compatibility" 384 help 385 This allows you to run 32-bit binaries on your Ultra. 386 Everybody wants this; say Y. 387 388config COMPAT 389 bool 390 depends on SPARC32_COMPAT 391 default y 392 select COMPAT_BINFMT_ELF 393 394config BINFMT_AOUT32 395 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries" 396 depends on SPARC32_COMPAT && ARCH_SUPPORTS_AOUT 397 help 398 This allows you to run 32-bit a.out format binaries on your Ultra. 399 If you want to run SunOS binaries (see SunOS binary emulation below) 400 or other a.out binaries, say Y. If unsure, say N. 401 402menu "Executable file formats" 403 404source "fs/Kconfig.binfmt" 405 406config SUNOS_EMUL 407 bool "SunOS binary emulation" 408 depends on BINFMT_AOUT32 409 help 410 This allows you to run most SunOS binaries. If you want to do this, 411 say Y here and place appropriate files in /usr/gnemul/sunos. See 412 <http://www.ultralinux.org/faq.html> for more information. If you 413 want to run SunOS binaries on an Ultra you must also say Y to 414 "Kernel support for 32-bit a.out binaries" above. 415 416config SOLARIS_EMUL 417 tristate "Solaris binary emulation (EXPERIMENTAL)" 418 depends on SPARC32_COMPAT && NET && EXPERIMENTAL 419 help 420 This is experimental code which will enable you to run (many) 421 Solaris binaries on your SPARC Linux machine. 422 423 To compile this code as a module, choose M here: the 424 module will be called solaris. 425 426endmenu 427 428config SCHED_SMT 429 bool "SMT (Hyperthreading) scheduler support" 430 depends on SMP 431 default y 432 help 433 SMT scheduler support improves the CPU scheduler's decision making 434 when dealing with UltraSPARC cpus at a cost of slightly increased 435 overhead in some places. If unsure say N here. 436 437config SCHED_MC 438 bool "Multi-core scheduler support" 439 depends on SMP 440 default y 441 help 442 Multi-core scheduler support improves the CPU scheduler's decision 443 making when dealing with multi-core CPU chips at a cost of slightly 444 increased overhead in some places. If unsure say N here. 445 446source "kernel/Kconfig.preempt" 447 448config CMDLINE_BOOL 449 bool "Default bootloader kernel arguments" 450 451config CMDLINE 452 string "Initial kernel command string" 453 depends on CMDLINE_BOOL 454 default "console=ttyS0,9600 root=/dev/sda1" 455 help 456 Say Y here if you want to be able to pass default arguments to 457 the kernel. This will be overridden by the bootloader, if you 458 use one (such as SILO). This is most useful if you want to boot 459 a kernel from TFTP, and want default options to be available 460 with having them passed on the command line. 461 462 NOTE: This option WILL override the PROM bootargs setting! 463 464source "net/Kconfig" 465 466source "drivers/Kconfig" 467 468source "drivers/sbus/char/Kconfig" 469 470source "fs/Kconfig" 471 472source "arch/sparc64/Kconfig.debug" 473 474source "security/Kconfig" 475 476source "crypto/Kconfig" 477 478source "lib/Kconfig" 479