Kconfig 12 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473
  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. mainmenu "Linux/UltraSPARC Kernel Configuration"
  6. config SPARC
  7. bool
  8. default y
  9. config SPARC64
  10. bool
  11. default y
  12. help
  13. SPARC is a family of RISC microprocessors designed and marketed by
  14. Sun Microsystems, incorporated. This port covers the newer 64-bit
  15. UltraSPARC. The UltraLinux project maintains both the SPARC32 and
  16. SPARC64 ports; its web page is available at
  17. <http://www.ultralinux.org/>.
  18. config GENERIC_TIME
  19. bool
  20. default y
  21. config GENERIC_CMOS_UPDATE
  22. bool
  23. default y
  24. config GENERIC_CLOCKEVENTS
  25. bool
  26. default y
  27. config 64BIT
  28. def_bool y
  29. config MMU
  30. bool
  31. default y
  32. config QUICKLIST
  33. bool
  34. default y
  35. config STACKTRACE_SUPPORT
  36. bool
  37. default y
  38. config LOCKDEP_SUPPORT
  39. bool
  40. default y
  41. config ARCH_MAY_HAVE_PC_FDC
  42. bool
  43. default y
  44. config ARCH_HAS_ILOG2_U32
  45. bool
  46. default n
  47. config ARCH_HAS_ILOG2_U64
  48. bool
  49. default n
  50. config AUDIT_ARCH
  51. bool
  52. default y
  53. config ARCH_NO_VIRT_TO_BUS
  54. def_bool y
  55. config OF
  56. def_bool y
  57. config GENERIC_HARDIRQS_NO__DO_IRQ
  58. bool
  59. def_bool y
  60. choice
  61. prompt "Kernel page size"
  62. default SPARC64_PAGE_SIZE_8KB
  63. config SPARC64_PAGE_SIZE_8KB
  64. bool "8KB"
  65. help
  66. This lets you select the page size of the kernel.
  67. 8KB and 64KB work quite well, since Sparc ELF sections
  68. provide for up to 64KB alignment.
  69. Therefore, 512KB and 4MB are for expert hackers only.
  70. If you don't know what to do, choose 8KB.
  71. config SPARC64_PAGE_SIZE_64KB
  72. bool "64KB"
  73. config SPARC64_PAGE_SIZE_512KB
  74. bool "512KB"
  75. config SPARC64_PAGE_SIZE_4MB
  76. bool "4MB"
  77. endchoice
  78. config SECCOMP
  79. bool "Enable seccomp to safely compute untrusted bytecode"
  80. depends on PROC_FS
  81. default y
  82. help
  83. This kernel feature is useful for number crunching applications
  84. that may need to compute untrusted bytecode during their
  85. execution. By using pipes or other transports made available to
  86. the process as file descriptors supporting the read/write
  87. syscalls, it's possible to isolate those applications in
  88. their own address space using seccomp. Once seccomp is
  89. enabled via /proc/<pid>/seccomp, it cannot be disabled
  90. and the task is only allowed to execute a few safe syscalls
  91. defined by each seccomp mode.
  92. If unsure, say Y. Only embedded should say N here.
  93. source kernel/Kconfig.hz
  94. config HOTPLUG_CPU
  95. bool "Support for hot-pluggable CPUs"
  96. depends on SMP
  97. select HOTPLUG
  98. ---help---
  99. Say Y here to experiment with turning CPUs off and on. CPUs
  100. can be controlled through /sys/devices/system/cpu/cpu#.
  101. Say N if you want to disable CPU hotplug.
  102. source "init/Kconfig"
  103. config SYSVIPC_COMPAT
  104. bool
  105. depends on COMPAT && SYSVIPC
  106. default y
  107. config GENERIC_HARDIRQS
  108. bool
  109. default y
  110. menu "General machine setup"
  111. source "kernel/time/Kconfig"
  112. config SMP
  113. bool "Symmetric multi-processing support"
  114. ---help---
  115. This enables support for systems with more than one CPU. If you have
  116. a system with only one CPU, say N. If you have a system with more than
  117. one CPU, say Y.
  118. If you say N here, the kernel will run on single and multiprocessor
  119. machines, but will use only one CPU of a multiprocessor machine. If
  120. you say Y here, the kernel will run on many, but not all,
  121. singleprocessor machines. On a singleprocessor machine, the kernel
  122. will run faster if you say N here.
  123. People using multiprocessor machines who say Y here should also say
  124. Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  125. Management" code will be disabled if you say Y here.
  126. See also the <file:Documentation/smp.txt>,
  127. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  128. <http://www.tldp.org/docs.html#howto>.
  129. If you don't know what to do here, say N.
  130. config NR_CPUS
  131. int "Maximum number of CPUs (2-1024)"
  132. range 2 1024
  133. depends on SMP
  134. default "64"
  135. source "drivers/cpufreq/Kconfig"
  136. config US3_FREQ
  137. tristate "UltraSPARC-III CPU Frequency driver"
  138. depends on CPU_FREQ
  139. select CPU_FREQ_TABLE
  140. help
  141. This adds the CPUFreq driver for UltraSPARC-III processors.
  142. For details, take a look at <file:Documentation/cpu-freq>.
  143. If in doubt, say N.
  144. config US2E_FREQ
  145. tristate "UltraSPARC-IIe CPU Frequency driver"
  146. depends on CPU_FREQ
  147. select CPU_FREQ_TABLE
  148. help
  149. This adds the CPUFreq driver for UltraSPARC-IIe processors.
  150. For details, take a look at <file:Documentation/cpu-freq>.
  151. If in doubt, say N.
  152. # Global things across all Sun machines.
  153. config RWSEM_GENERIC_SPINLOCK
  154. bool
  155. config RWSEM_XCHGADD_ALGORITHM
  156. bool
  157. default y
  158. config GENERIC_FIND_NEXT_BIT
  159. bool
  160. default y
  161. config GENERIC_HWEIGHT
  162. bool
  163. default y if !ULTRA_HAS_POPULATION_COUNT
  164. config GENERIC_CALIBRATE_DELAY
  165. bool
  166. default y
  167. choice
  168. prompt "SPARC64 Huge TLB Page Size"
  169. depends on HUGETLB_PAGE
  170. default HUGETLB_PAGE_SIZE_4MB
  171. config HUGETLB_PAGE_SIZE_4MB
  172. bool "4MB"
  173. config HUGETLB_PAGE_SIZE_512K
  174. depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
  175. bool "512K"
  176. config HUGETLB_PAGE_SIZE_64K
  177. depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
  178. bool "64K"
  179. endchoice
  180. endmenu
  181. config ARCH_SELECT_MEMORY_MODEL
  182. def_bool y
  183. config ARCH_SPARSEMEM_ENABLE
  184. def_bool y
  185. select SPARSEMEM_VMEMMAP_ENABLE
  186. config ARCH_SPARSEMEM_DEFAULT
  187. def_bool y
  188. source "mm/Kconfig"
  189. config ISA
  190. bool
  191. help
  192. Find out whether you have ISA slots on your motherboard. ISA is the
  193. name of a bus system, i.e. the way the CPU talks to the other stuff
  194. inside your box. Other bus systems are PCI, EISA, MicroChannel
  195. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  196. newer boards don't support it. If you have ISA, say Y, otherwise N.
  197. config ISAPNP
  198. bool
  199. help
  200. Say Y here if you would like support for ISA Plug and Play devices.
  201. Some information is in <file:Documentation/isapnp.txt>.
  202. To compile this driver as a module, choose M here: the
  203. module will be called isapnp.
  204. If unsure, say Y.
  205. config EISA
  206. bool
  207. ---help---
  208. The Extended Industry Standard Architecture (EISA) bus was
  209. developed as an open alternative to the IBM MicroChannel bus.
  210. The EISA bus provided some of the features of the IBM MicroChannel
  211. bus while maintaining backward compatibility with cards made for
  212. the older ISA bus. The EISA bus saw limited use between 1988 and
  213. 1995 when it was made obsolete by the PCI bus.
  214. Say Y here if you are building a kernel for an EISA-based machine.
  215. Otherwise, say N.
  216. config MCA
  217. bool
  218. help
  219. MicroChannel Architecture is found in some IBM PS/2 machines and
  220. laptops. It is a bus system similar to PCI or ISA. See
  221. <file:Documentation/mca.txt> (and especially the web page given
  222. there) before attempting to build an MCA bus kernel.
  223. config PCMCIA
  224. tristate
  225. ---help---
  226. Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
  227. computer. These are credit-card size devices such as network cards,
  228. modems or hard drives often used with laptops computers. There are
  229. actually two varieties of these cards: the older 16 bit PCMCIA cards
  230. and the newer 32 bit CardBus cards. If you want to use CardBus
  231. cards, you need to say Y here and also to "CardBus support" below.
  232. To use your PC-cards, you will need supporting software from David
  233. Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
  234. for location). Please also read the PCMCIA-HOWTO, available from
  235. <http://www.tldp.org/docs.html#howto>.
  236. To compile this driver as modules, choose M here: the
  237. modules will be called pcmcia_core and ds.
  238. config SBUS
  239. bool
  240. default y
  241. config SBUSCHAR
  242. bool
  243. default y
  244. config SUN_AUXIO
  245. bool
  246. default y
  247. config SUN_IO
  248. bool
  249. default y
  250. config SUN_LDOMS
  251. bool "Sun Logical Domains support"
  252. help
  253. Say Y here is you want to support virtual devices via
  254. Logical Domains.
  255. config PCI
  256. bool "PCI support"
  257. select ARCH_SUPPORTS_MSI
  258. help
  259. Find out whether you have a PCI motherboard. PCI is the name of a
  260. bus system, i.e. the way the CPU talks to the other stuff inside
  261. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  262. VESA. If you have PCI, say Y, otherwise N.
  263. The PCI-HOWTO, available from
  264. <http://www.tldp.org/docs.html#howto>, contains valuable
  265. information about which PCI hardware does work under Linux and which
  266. doesn't.
  267. config PCI_DOMAINS
  268. def_bool PCI
  269. config PCI_SYSCALL
  270. def_bool PCI
  271. source "drivers/pci/Kconfig"
  272. config SUN_OPENPROMFS
  273. tristate "Openprom tree appears in /proc/openprom"
  274. help
  275. If you say Y, the OpenPROM device tree will be available as a
  276. virtual file system, which you can mount to /proc/openprom by "mount
  277. -t openpromfs none /proc/openprom".
  278. To compile the /proc/openprom support as a module, choose M here: the
  279. module will be called openpromfs. If unsure, choose M.
  280. config SPARC32_COMPAT
  281. bool "Kernel support for Linux/Sparc 32bit binary compatibility"
  282. help
  283. This allows you to run 32-bit binaries on your Ultra.
  284. Everybody wants this; say Y.
  285. config COMPAT
  286. bool
  287. depends on SPARC32_COMPAT
  288. default y
  289. config BINFMT_ELF32
  290. bool "Kernel support for 32-bit ELF binaries"
  291. depends on SPARC32_COMPAT
  292. help
  293. This allows you to run 32-bit Linux/ELF binaries on your Ultra.
  294. Everybody wants this; say Y.
  295. config BINFMT_AOUT32
  296. bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
  297. depends on SPARC32_COMPAT
  298. help
  299. This allows you to run 32-bit a.out format binaries on your Ultra.
  300. If you want to run SunOS binaries (see SunOS binary emulation below)
  301. or other a.out binaries, say Y. If unsure, say N.
  302. menu "Executable file formats"
  303. source "fs/Kconfig.binfmt"
  304. config SUNOS_EMUL
  305. bool "SunOS binary emulation"
  306. depends on BINFMT_AOUT32
  307. help
  308. This allows you to run most SunOS binaries. If you want to do this,
  309. say Y here and place appropriate files in /usr/gnemul/sunos. See
  310. <http://www.ultralinux.org/faq.html> for more information. If you
  311. want to run SunOS binaries on an Ultra you must also say Y to
  312. "Kernel support for 32-bit a.out binaries" above.
  313. config SOLARIS_EMUL
  314. tristate "Solaris binary emulation (EXPERIMENTAL)"
  315. depends on SPARC32_COMPAT && NET && EXPERIMENTAL
  316. help
  317. This is experimental code which will enable you to run (many)
  318. Solaris binaries on your SPARC Linux machine.
  319. To compile this code as a module, choose M here: the
  320. module will be called solaris.
  321. endmenu
  322. config SCHED_SMT
  323. bool "SMT (Hyperthreading) scheduler support"
  324. depends on SMP
  325. default y
  326. help
  327. SMT scheduler support improves the CPU scheduler's decision making
  328. when dealing with UltraSPARC cpus at a cost of slightly increased
  329. overhead in some places. If unsure say N here.
  330. config SCHED_MC
  331. bool "Multi-core scheduler support"
  332. depends on SMP
  333. default y
  334. help
  335. Multi-core scheduler support improves the CPU scheduler's decision
  336. making when dealing with multi-core CPU chips at a cost of slightly
  337. increased overhead in some places. If unsure say N here.
  338. source "kernel/Kconfig.preempt"
  339. config CMDLINE_BOOL
  340. bool "Default bootloader kernel arguments"
  341. config CMDLINE
  342. string "Initial kernel command string"
  343. depends on CMDLINE_BOOL
  344. default "console=ttyS0,9600 root=/dev/sda1"
  345. help
  346. Say Y here if you want to be able to pass default arguments to
  347. the kernel. This will be overridden by the bootloader, if you
  348. use one (such as SILO). This is most useful if you want to boot
  349. a kernel from TFTP, and want default options to be available
  350. with having them passed on the command line.
  351. NOTE: This option WILL override the PROM bootargs setting!
  352. source "net/Kconfig"
  353. source "drivers/Kconfig"
  354. source "drivers/sbus/char/Kconfig"
  355. source "fs/Kconfig"
  356. source "kernel/Kconfig.instrumentation"
  357. source "arch/sparc64/Kconfig.debug"
  358. source "security/Kconfig"
  359. source "crypto/Kconfig"
  360. source "lib/Kconfig"