Kconfig 8.8 KB

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  1. # $Id: config.in,v 1.113 2002/01/24 22:14:44 davem Exp $
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. mainmenu "Linux/SPARC Kernel Configuration"
  6. config MMU
  7. bool
  8. default y
  9. config HIGHMEM
  10. bool
  11. default y
  12. config ZONE_DMA
  13. bool
  14. default y
  15. config GENERIC_ISA_DMA
  16. bool
  17. default y
  18. config ARCH_NO_VIRT_TO_BUS
  19. def_bool y
  20. config OF
  21. def_bool y
  22. config ARCH_SUPPORTS_AOUT
  23. def_bool y
  24. source "init/Kconfig"
  25. menu "General machine setup"
  26. config SMP
  27. bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  28. ---help---
  29. This enables support for systems with more than one CPU. If you have
  30. a system with only one CPU, say N. If you have a system with more
  31. than one CPU, say Y.
  32. If you say N here, the kernel will run on single and multiprocessor
  33. machines, but will use only one CPU of a multiprocessor machine. If
  34. you say Y here, the kernel will run on many, but not all,
  35. singleprocessor machines. On a singleprocessor machine, the kernel
  36. will run faster if you say N here.
  37. People using multiprocessor machines who say Y here should also say
  38. Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  39. Management" code will be disabled if you say Y here.
  40. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  41. available at <http://www.tldp.org/docs.html#howto>.
  42. If you don't know what to do here, say N.
  43. config NR_CPUS
  44. int "Maximum number of CPUs (2-32)"
  45. range 2 32
  46. depends on SMP
  47. default "32"
  48. config SPARC
  49. bool
  50. default y
  51. select HAVE_OPROFILE
  52. # Identify this as a Sparc32 build
  53. config SPARC32
  54. bool
  55. default y
  56. help
  57. SPARC is a family of RISC microprocessors designed and marketed by
  58. Sun Microsystems, incorporated. They are very widely found in Sun
  59. workstations and clones. This port covers the original 32-bit SPARC;
  60. it is old and stable and usually considered one of the "big three"
  61. along with the Intel and Alpha ports. The UltraLinux project
  62. maintains both the SPARC32 and SPARC64 ports; its web page is
  63. available at <http://www.ultralinux.org/>.
  64. # Global things across all Sun machines.
  65. config ISA
  66. bool
  67. help
  68. ISA is found on Espresso only and is not supported currently.
  69. Say N
  70. config EISA
  71. bool
  72. help
  73. EISA is not supported.
  74. Say N
  75. config MCA
  76. bool
  77. help
  78. MCA is not supported.
  79. Say N
  80. config PCMCIA
  81. tristate
  82. ---help---
  83. Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
  84. computer. These are credit-card size devices such as network cards,
  85. modems or hard drives often used with laptops computers. There are
  86. actually two varieties of these cards: the older 16 bit PCMCIA cards
  87. and the newer 32 bit CardBus cards. If you want to use CardBus
  88. cards, you need to say Y here and also to "CardBus support" below.
  89. To use your PC-cards, you will need supporting software from David
  90. Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
  91. for location). Please also read the PCMCIA-HOWTO, available from
  92. <http://www.tldp.org/docs.html#howto>.
  93. To compile this driver as modules, choose M here: the
  94. modules will be called pcmcia_core and ds.
  95. config SBUS
  96. bool
  97. default y
  98. config SBUSCHAR
  99. bool
  100. default y
  101. config SERIAL_CONSOLE
  102. bool
  103. default y
  104. ---help---
  105. If you say Y here, it will be possible to use a serial port as the
  106. system console (the system console is the device which receives all
  107. kernel messages and warnings and which allows logins in single user
  108. mode). This could be useful if some terminal or printer is connected
  109. to that serial port.
  110. Even if you say Y here, the currently visible virtual console
  111. (/dev/tty0) will still be used as the system console by default, but
  112. you can alter that using a kernel command line option such as
  113. "console=ttyS1". (Try "man bootparam" or see the documentation of
  114. your boot loader (silo) about how to pass options to the kernel at
  115. boot time.)
  116. If you don't have a graphics card installed and you say Y here, the
  117. kernel will automatically use the first serial line, /dev/ttyS0, as
  118. system console.
  119. If unsure, say N.
  120. config SUN_AUXIO
  121. bool
  122. default y
  123. config SUN_IO
  124. bool
  125. default y
  126. config RWSEM_GENERIC_SPINLOCK
  127. bool
  128. default y
  129. config RWSEM_XCHGADD_ALGORITHM
  130. bool
  131. config GENERIC_FIND_NEXT_BIT
  132. bool
  133. default y
  134. config GENERIC_HWEIGHT
  135. bool
  136. default y
  137. config GENERIC_CALIBRATE_DELAY
  138. bool
  139. default y
  140. config ARCH_MAY_HAVE_PC_FDC
  141. bool
  142. default y
  143. config ARCH_HAS_ILOG2_U32
  144. bool
  145. default n
  146. config ARCH_HAS_ILOG2_U64
  147. bool
  148. default n
  149. config EMULATED_CMPXCHG
  150. bool
  151. default y
  152. help
  153. Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
  154. is emulated, and therefore it is not completely atomic.
  155. config SUN_PM
  156. bool
  157. default y
  158. help
  159. Enable power management and CPU standby features on supported
  160. SPARC platforms.
  161. config SUN4
  162. bool "Support for SUN4 machines (disables SUN4[CDM] support)"
  163. depends on !SMP
  164. default n
  165. help
  166. Say Y here if, and only if, your machine is a sun4. Note that
  167. a kernel compiled with this option will run only on sun4.
  168. (And the current version will probably work only on sun4/330.)
  169. if !SUN4
  170. config PCI
  171. bool "Support for PCI and PS/2 keyboard/mouse"
  172. help
  173. CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
  174. CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
  175. All of these platforms are extremely obscure, so say N if unsure.
  176. config PCI_SYSCALL
  177. def_bool PCI
  178. source "drivers/pci/Kconfig"
  179. endif
  180. config NO_DMA
  181. def_bool !PCI
  182. config SUN_OPENPROMFS
  183. tristate "Openprom tree appears in /proc/openprom"
  184. help
  185. If you say Y, the OpenPROM device tree will be available as a
  186. virtual file system, which you can mount to /proc/openprom by "mount
  187. -t openpromfs none /proc/openprom".
  188. To compile the /proc/openprom support as a module, choose M here: the
  189. module will be called openpromfs.
  190. Only choose N if you know in advance that you will not need to modify
  191. OpenPROM settings on the running system.
  192. config SPARC_LED
  193. tristate "Sun4m LED driver"
  194. help
  195. This driver toggles the front-panel LED on sun4m systems
  196. in a user-specifiable manner. Its state can be probed
  197. by reading /proc/led and its blinking mode can be changed
  198. via writes to /proc/led
  199. source "fs/Kconfig.binfmt"
  200. config SUNOS_EMUL
  201. bool "SunOS binary emulation"
  202. help
  203. This allows you to run most SunOS binaries. If you want to do this,
  204. say Y here and place appropriate files in /usr/gnemul/sunos. See
  205. <http://www.ultralinux.org/faq.html> for more information. If you
  206. want to run SunOS binaries on an Ultra you must also say Y to
  207. "Kernel support for 32-bit a.out binaries" above.
  208. source "mm/Kconfig"
  209. endmenu
  210. source "net/Kconfig"
  211. source "drivers/Kconfig"
  212. if !SUN4
  213. source "drivers/sbus/char/Kconfig"
  214. endif
  215. # This one must be before the filesystem configs. -DaveM
  216. menu "Unix98 PTY support"
  217. config UNIX98_PTYS
  218. bool "Unix98 PTY support"
  219. ---help---
  220. A pseudo terminal (PTY) is a software device consisting of two
  221. halves: a master and a slave. The slave device behaves identical to
  222. a physical terminal; the master device is used by a process to
  223. read data from and write data to the slave, thereby emulating a
  224. terminal. Typical programs for the master side are telnet servers
  225. and xterms.
  226. Linux has traditionally used the BSD-like names /dev/ptyxx for
  227. masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
  228. has a number of problems. The GNU C library glibc 2.1 and later,
  229. however, supports the Unix98 naming standard: in order to acquire a
  230. pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
  231. terminal is then made available to the process and the pseudo
  232. terminal slave can be accessed as /dev/pts/<number>. What was
  233. traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
  234. The entries in /dev/pts/ are created on the fly by a virtual
  235. file system; therefore, if you say Y here you should say Y to
  236. "/dev/pts file system for Unix98 PTYs" as well.
  237. If you want to say Y here, you need to have the C library glibc 2.1
  238. or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
  239. Read the instructions in <file:Documentation/Changes> pertaining to
  240. pseudo terminals. It's safe to say N.
  241. config UNIX98_PTY_COUNT
  242. int "Maximum number of Unix98 PTYs in use (0-2048)"
  243. depends on UNIX98_PTYS
  244. default "256"
  245. help
  246. The maximum number of Unix98 PTYs that can be used at any one time.
  247. The default is 256, and should be enough for desktop systems. Server
  248. machines which support incoming telnet/rlogin/ssh connections and/or
  249. serve several X terminals may want to increase this: every incoming
  250. connection and every xterm uses up one PTY.
  251. When not in use, each additional set of 256 PTYs occupy
  252. approximately 8 KB of kernel memory on 32-bit architectures.
  253. endmenu
  254. source "fs/Kconfig"
  255. source "arch/sparc/Kconfig.debug"
  256. source "security/Kconfig"
  257. source "crypto/Kconfig"
  258. source "lib/Kconfig"