Kconfig 18 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606
  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. config ALPHA
  6. bool
  7. default y
  8. help
  9. The Alpha is a 64-bit general-purpose processor designed and
  10. marketed by the Digital Equipment Corporation of blessed memory,
  11. now Hewlett-Packard. The Alpha Linux project has a home page at
  12. <http://www.alphalinux.org/>.
  13. config 64BIT
  14. def_bool y
  15. config MMU
  16. bool
  17. default y
  18. config UID16
  19. bool
  20. config RWSEM_GENERIC_SPINLOCK
  21. bool
  22. config RWSEM_XCHGADD_ALGORITHM
  23. bool
  24. default y
  25. config GENERIC_CALIBRATE_DELAY
  26. bool
  27. default y
  28. config GENERIC_ISA_DMA
  29. bool
  30. default y
  31. config GENERIC_IOMAP
  32. bool
  33. default n
  34. source "init/Kconfig"
  35. menu "System setup"
  36. choice
  37. prompt "Alpha system type"
  38. default ALPHA_GENERIC
  39. ---help---
  40. This is the system type of your hardware. A "generic" kernel will
  41. run on any supported Alpha system. However, if you configure a
  42. kernel for your specific system, it will be faster and smaller.
  43. To find out what type of Alpha system you have, you may want to
  44. check out the Linux/Alpha FAQ, accessible on the WWW from
  45. <http://www.alphalinux.org/>. In summary:
  46. Alcor/Alpha-XLT AS 600
  47. Alpha-XL XL-233, XL-266
  48. AlphaBook1 Alpha laptop
  49. Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
  50. Cabriolet AlphaPC64, AlphaPCI64
  51. DP264 DP264
  52. EB164 EB164 21164 evaluation board
  53. EB64+ EB64+ 21064 evaluation board
  54. EB66 EB66 21066 evaluation board
  55. EB66+ EB66+ 21066 evaluation board
  56. Jensen DECpc 150, DEC 2000 model 300,
  57. DEC 2000 model 500
  58. LX164 AlphaPC164-LX
  59. Lynx AS 2100A
  60. Miata Personal Workstation 433a, 433au, 500a,
  61. 500au, 600a, or 600au
  62. Marvel AlphaServer ES47 / ES80 / GS1280
  63. Mikasa AS 1000
  64. Noname AXPpci33, UDB (Multia)
  65. Noritake AS 1000A, AS 600A, AS 800
  66. PC164 AlphaPC164
  67. Rawhide AS 1200, AS 4000, AS 4100
  68. Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
  69. SX164 AlphaPC164-SX
  70. Sable AS 2000, AS 2100
  71. Shark DS 20L
  72. Takara Takara
  73. Titan AlphaServer ES45 / DS25
  74. Wildfire AlphaServer GS 40/80/160/320
  75. If you don't know what to do, choose "generic".
  76. config ALPHA_GENERIC
  77. bool "Generic"
  78. help
  79. A generic kernel will run on all supported Alpha hardware.
  80. config ALPHA_ALCOR
  81. bool "Alcor/Alpha-XLT"
  82. help
  83. For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
  84. slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
  85. Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
  86. controller (256-bit memory bus) and a PCI interface. It also does
  87. all the work required to support an external Bcache and to maintain
  88. memory coherence when a PCI device DMAs into (or out of) memory.
  89. config ALPHA_XL
  90. bool "Alpha-XL"
  91. help
  92. XL-233 and XL-266-based Alpha systems.
  93. config ALPHA_BOOK1
  94. bool "AlphaBook1"
  95. help
  96. Dec AlphaBook1/Burns Alpha-based laptops.
  97. config ALPHA_AVANTI_CH
  98. bool "Avanti"
  99. config ALPHA_CABRIOLET
  100. bool "Cabriolet"
  101. help
  102. Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
  103. baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
  104. slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
  105. Bcache SIMMs. Requires power supply with 3.3V output.
  106. config ALPHA_DP264
  107. bool "DP264"
  108. help
  109. Various 21264 systems with the tsunami core logic chipset.
  110. API Networks: 264DP, UP2000(+), CS20;
  111. Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
  112. config ALPHA_EB164
  113. bool "EB164"
  114. help
  115. EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
  116. ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
  117. shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
  118. Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
  119. MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
  120. motherboard. Requires power supply with 3.3V output.
  121. config ALPHA_EB64P_CH
  122. bool "EB64+"
  123. config ALPHA_EB66
  124. bool "EB66"
  125. help
  126. A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
  127. identical to EB64+. Baby PC-AT size. Runs from standard PC power
  128. supply. The EB66 schematic was published as a marketing poster
  129. advertising the 21066 as "the first microprocessor in the world with
  130. embedded PCI".
  131. config ALPHA_EB66P
  132. bool "EB66+"
  133. help
  134. Later variant of the EB66 board.
  135. config ALPHA_EIGER
  136. bool "Eiger"
  137. help
  138. Apparently an obscure OEM single-board computer based on the
  139. Typhoon/Tsunami chipset family. Information on it is scanty.
  140. config ALPHA_JENSEN
  141. bool "Jensen"
  142. help
  143. DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
  144. of the first-generation Alpha systems. A number of these systems
  145. seem to be available on the second- hand market. The Jensen is a
  146. floor-standing tower system which originally used a 150MHz 21064 It
  147. used programmable logic to interface a 486 EISA I/O bridge to the
  148. CPU.
  149. config ALPHA_LX164
  150. bool "LX164"
  151. help
  152. A technical overview of this board is available at
  153. <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
  154. config ALPHA_LYNX
  155. bool "Lynx"
  156. help
  157. AlphaServer 2100A-based systems.
  158. config ALPHA_MARVEL
  159. bool "Marvel"
  160. help
  161. AlphaServer ES47 / ES80 / GS1280 based on EV7.
  162. config ALPHA_MIATA
  163. bool "Miata"
  164. help
  165. The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
  166. or 600au). There is an Installation HOWTO for this hardware at
  167. <http://eijk.homelinux.org/~stefan/miata.html>.
  168. config ALPHA_MIKASA
  169. bool "Mikasa"
  170. help
  171. AlphaServer 1000-based Alpha systems.
  172. config ALPHA_NAUTILUS
  173. bool "Nautilus"
  174. help
  175. Alpha systems based on the AMD 751 & ALI 1543C chipsets.
  176. config ALPHA_NONAME_CH
  177. bool "Noname"
  178. config ALPHA_NORITAKE
  179. bool "Noritake"
  180. help
  181. AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
  182. systems.
  183. config ALPHA_PC164
  184. bool "PC164"
  185. config ALPHA_P2K
  186. bool "Platform2000"
  187. config ALPHA_RAWHIDE
  188. bool "Rawhide"
  189. help
  190. AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
  191. See HOWTO at
  192. <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
  193. config ALPHA_RUFFIAN
  194. bool "Ruffian"
  195. help
  196. Samsung APC164UX. There is a page on known problems and workarounds
  197. at <http://www.alphalinux.org/faq/FAQ-11.html>.
  198. config ALPHA_RX164
  199. bool "RX164"
  200. config ALPHA_SX164
  201. bool "SX164"
  202. config ALPHA_SABLE
  203. bool "Sable"
  204. help
  205. Digital AlphaServer 2000 and 2100-based systems.
  206. config ALPHA_SHARK
  207. bool "Shark"
  208. config ALPHA_TAKARA
  209. bool "Takara"
  210. help
  211. Alpha 11164-based OEM single-board computer.
  212. config ALPHA_TITAN
  213. bool "Titan"
  214. help
  215. AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
  216. config ALPHA_WILDFIRE
  217. bool "Wildfire"
  218. help
  219. AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
  220. endchoice
  221. # clear all implied options (don't want default values for those):
  222. # Most of these machines have ISA slots; not exactly sure which don't,
  223. # and this doesn't activate hordes of code, so do it always.
  224. config ISA
  225. bool
  226. default y
  227. help
  228. Find out whether you have ISA slots on your motherboard. ISA is the
  229. name of a bus system, i.e. the way the CPU talks to the other stuff
  230. inside your box. Other bus systems are PCI, EISA, MicroChannel
  231. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  232. newer boards don't support it. If you have ISA, say Y, otherwise N.
  233. config PCI
  234. bool
  235. depends on !ALPHA_JENSEN
  236. default y
  237. help
  238. Find out whether you have a PCI motherboard. PCI is the name of a
  239. bus system, i.e. the way the CPU talks to the other stuff inside
  240. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  241. VESA. If you have PCI, say Y, otherwise N.
  242. The PCI-HOWTO, available from
  243. <http://www.tldp.org/docs.html#howto>, contains valuable
  244. information about which PCI hardware does work under Linux and which
  245. doesn't.
  246. config PCI_DOMAINS
  247. bool
  248. default y
  249. config ALPHA_CORE_AGP
  250. bool
  251. depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
  252. default y
  253. config ALPHA_NONAME
  254. bool
  255. depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
  256. default y
  257. help
  258. The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
  259. UDB). This design was produced by Digital's Technical OEM (TOEM)
  260. group. It uses the 21066 processor running at 166MHz or 233MHz. It
  261. is a baby-AT size, and runs from a standard PC power supply. It has
  262. 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
  263. 2 versions, with either PS/2 or large DIN connectors for the
  264. keyboard.
  265. config ALPHA_EV4
  266. bool
  267. depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
  268. default y if !ALPHA_LYNX
  269. config ALPHA_LCA
  270. bool
  271. depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
  272. default y
  273. config ALPHA_APECS
  274. bool
  275. depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
  276. default y
  277. config ALPHA_EB64P
  278. bool
  279. depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
  280. default y
  281. help
  282. Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
  283. 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
  284. ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
  285. (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
  286. SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
  287. Runs from standard PC power supply.
  288. config ALPHA_EV5
  289. bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
  290. default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
  291. config ALPHA_EV4
  292. bool
  293. default y if ALPHA_LYNX && !ALPHA_EV5
  294. config ALPHA_CIA
  295. bool
  296. depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
  297. default y
  298. config ALPHA_EV56
  299. bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
  300. default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
  301. config ALPHA_EV56
  302. prompt "EV56 CPU (speed >= 333MHz)?"
  303. depends on ALPHA_NORITAKE && ALPHA_PRIMO
  304. config ALPHA_EV56
  305. prompt "EV56 CPU (speed >= 400MHz)?"
  306. depends on ALPHA_RAWHIDE
  307. config ALPHA_PRIMO
  308. bool "EV5 CPU daughtercard (model 5/xxx)?"
  309. depends on ALPHA_NORITAKE || ALPHA_MIKASA
  310. help
  311. Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
  312. config ALPHA_GAMMA
  313. bool "EV5 CPU(s) (model 5/xxx)?"
  314. depends on ALPHA_SABLE
  315. help
  316. Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
  317. config ALPHA_GAMMA
  318. bool
  319. depends on ALPHA_LYNX
  320. default y
  321. config ALPHA_T2
  322. bool
  323. depends on ALPHA_SABLE || ALPHA_LYNX
  324. default y
  325. config ALPHA_PYXIS
  326. bool
  327. depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
  328. default y
  329. config ALPHA_EV6
  330. bool
  331. depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
  332. default y
  333. config ALPHA_TSUNAMI
  334. bool
  335. depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
  336. default y
  337. config ALPHA_EV67
  338. bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
  339. default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
  340. help
  341. Is this a machine based on the EV67 core? If in doubt, select N here
  342. and the machine will be treated as an EV6.
  343. config ALPHA_EV7
  344. bool
  345. depends on ALPHA_MARVEL
  346. default y
  347. config ALPHA_MCPCIA
  348. bool
  349. depends on ALPHA_RAWHIDE
  350. default y
  351. config ALPHA_POLARIS
  352. bool
  353. depends on ALPHA_RX164
  354. default y
  355. config ALPHA_IRONGATE
  356. bool
  357. depends on ALPHA_NAUTILUS
  358. default y
  359. config ALPHA_AVANTI
  360. bool
  361. depends on ALPHA_XL || ALPHA_AVANTI_CH
  362. default y
  363. help
  364. Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
  365. Alphas. Info at
  366. <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
  367. config ALPHA_BROKEN_IRQ_MASK
  368. bool
  369. depends on ALPHA_GENERIC || ALPHA_PC164
  370. default y
  371. config ALPHA_SRM
  372. bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
  373. default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
  374. ---help---
  375. There are two different types of booting firmware on Alphas: SRM,
  376. which is command line driven, and ARC, which uses menus and arrow
  377. keys. Details about the Linux/Alpha booting process are contained in
  378. the Linux/Alpha FAQ, accessible on the WWW from
  379. <http://www.alphalinux.org/>.
  380. The usual way to load Linux on an Alpha machine is to use MILO
  381. (a bootloader that lets you pass command line parameters to the
  382. kernel just like lilo does for the x86 architecture) which can be
  383. loaded either from ARC or can be installed directly as a permanent
  384. firmware replacement from floppy (which requires changing a certain
  385. jumper on the motherboard). If you want to do either of these, say N
  386. here. If MILO doesn't work on your system (true for Jensen
  387. motherboards), you can bypass it altogether and boot Linux directly
  388. from an SRM console; say Y here in order to do that. Note that you
  389. won't be able to boot from an IDE disk using SRM.
  390. If unsure, say N.
  391. config EISA
  392. bool
  393. depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
  394. default y
  395. config SMP
  396. bool "Symmetric multi-processing support"
  397. depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
  398. ---help---
  399. This enables support for systems with more than one CPU. If you have
  400. a system with only one CPU, like most personal computers, say N. If
  401. you have a system with more than one CPU, say Y.
  402. If you say N here, the kernel will run on single and multiprocessor
  403. machines, but will use only one CPU of a multiprocessor machine. If
  404. you say Y here, the kernel will run on many, but not all,
  405. singleprocessor machines. On a singleprocessor machine, the kernel
  406. will run faster if you say N here.
  407. See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
  408. available at <http://www.tldp.org/docs.html#howto>.
  409. If you don't know what to do here, say N.
  410. config HAVE_DEC_LOCK
  411. bool
  412. depends on SMP
  413. default y
  414. config NR_CPUS
  415. int "Maximum number of CPUs (2-64)"
  416. range 2 64
  417. depends on SMP
  418. default "64"
  419. config DISCONTIGMEM
  420. bool "Discontiguous Memory Support (EXPERIMENTAL)"
  421. depends on EXPERIMENTAL
  422. help
  423. Say Y to upport efficient handling of discontiguous physical memory,
  424. for architectures which are either NUMA (Non-Uniform Memory Access)
  425. or have huge holes in the physical address space for other reasons.
  426. See <file:Documentation/vm/numa> for more.
  427. config NUMA
  428. bool "NUMA Support (EXPERIMENTAL)"
  429. depends on DISCONTIGMEM
  430. help
  431. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  432. Access). This option is for configuring high-end multiprocessor
  433. server machines. If in doubt, say N.
  434. # LARGE_VMALLOC is racy, if you *really* need it then fix it first
  435. config ALPHA_LARGE_VMALLOC
  436. bool
  437. ---help---
  438. Process creation and other aspects of virtual memory management can
  439. be streamlined if we restrict the kernel to one PGD for all vmalloc
  440. allocations. This equates to about 8GB.
  441. Under normal circumstances, this is so far and above what is needed
  442. as to be laughable. However, there are certain applications (such
  443. as benchmark-grade in-kernel web serving) that can make use of as
  444. much vmalloc space as is available.
  445. Say N unless you know you need gobs and gobs of vmalloc space.
  446. config VERBOSE_MCHECK
  447. bool "Verbose Machine Checks"
  448. config VERBOSE_MCHECK_ON
  449. int "Verbose Printing Mode (0=off, 1=on, 2=all)"
  450. depends on VERBOSE_MCHECK
  451. default 1
  452. ---help---
  453. This option allows the default printing mode to be set, and then
  454. possibly overridden by a boot command argument.
  455. For example, if one wanted the option of printing verbose
  456. machine checks, but wanted the default to be as if verbose
  457. machine check printing was turned off, then one would choose
  458. the printing mode to be 0. Then, upon reboot, one could add
  459. the boot command line "verbose_mcheck=1" to get the normal
  460. verbose machine check printing, or "verbose_mcheck=2" to get
  461. the maximum information available.
  462. Take the default (1) unless you want more control or more info.
  463. source "drivers/pci/Kconfig"
  464. source "drivers/eisa/Kconfig"
  465. source "drivers/pcmcia/Kconfig"
  466. config SRM_ENV
  467. tristate "SRM environment through procfs"
  468. depends on PROC_FS
  469. ---help---
  470. If you enable this option, a subdirectory inside /proc called
  471. /proc/srm_environment will give you access to the all important
  472. SRM environment variables (those which have a name) and also
  473. to all others (by their internal number).
  474. SRM is something like a BIOS for Alpha machines. There are some
  475. other such BIOSes, like AlphaBIOS, which this driver cannot
  476. support (hey, that's not SRM!).
  477. Despite the fact that this driver doesn't work on all Alphas (but
  478. only on those which have SRM as their firmware), it's save to
  479. build it even if your particular machine doesn't know about SRM
  480. (or if you intend to compile a generic kernel). It will simply
  481. not create those subdirectory in /proc (and give you some warning,
  482. of course).
  483. This driver is also available as a module and will be called
  484. srm_env then.
  485. source "fs/Kconfig.binfmt"
  486. endmenu
  487. source "drivers/Kconfig"
  488. source "fs/Kconfig"
  489. source "arch/alpha/oprofile/Kconfig"
  490. source "arch/alpha/Kconfig.debug"
  491. source "security/Kconfig"
  492. source "crypto/Kconfig"
  493. source "lib/Kconfig"