Kconfig 12 KB

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