Kconfig 8.9 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. source "init/Kconfig"
  23. menu "General machine setup"
  24. config SMP
  25. bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  26. ---help---
  27. This enables support for systems with more than one CPU. If you have
  28. a system with only one CPU, say N. If you have a system with more
  29. than one CPU, say Y.
  30. If you say N here, the kernel will run on single and multiprocessor
  31. machines, but will use only one CPU of a multiprocessor machine. If
  32. you say Y here, the kernel will run on many, but not all,
  33. singleprocessor machines. On a singleprocessor machine, the kernel
  34. will run faster if you say N here.
  35. People using multiprocessor machines who say Y here should also say
  36. Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  37. Management" code will be disabled if you say Y here.
  38. See also the <file:Documentation/smp.txt>,
  39. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  40. <http://www.tldp.org/docs.html#howto>.
  41. If you don't know what to do here, say N.
  42. config NR_CPUS
  43. int "Maximum number of CPUs (2-32)"
  44. range 2 32
  45. depends on SMP
  46. default "32"
  47. config SPARC
  48. bool
  49. default y
  50. select HAVE_OPROFILE
  51. # Identify this as a Sparc32 build
  52. config SPARC32
  53. bool
  54. default y
  55. help
  56. SPARC is a family of RISC microprocessors designed and marketed by
  57. Sun Microsystems, incorporated. They are very widely found in Sun
  58. workstations and clones. This port covers the original 32-bit SPARC;
  59. it is old and stable and usually considered one of the "big three"
  60. along with the Intel and Alpha ports. The UltraLinux project
  61. maintains both the SPARC32 and SPARC64 ports; its web page is
  62. available at <http://www.ultralinux.org/>.
  63. # Global things across all Sun machines.
  64. config ISA
  65. bool
  66. help
  67. ISA is found on Espresso only and is not supported currently.
  68. Say N
  69. config EISA
  70. bool
  71. help
  72. EISA is not supported.
  73. Say N
  74. config MCA
  75. bool
  76. help
  77. MCA is not supported.
  78. Say N
  79. config PCMCIA
  80. tristate
  81. ---help---
  82. Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
  83. computer. These are credit-card size devices such as network cards,
  84. modems or hard drives often used with laptops computers. There are
  85. actually two varieties of these cards: the older 16 bit PCMCIA cards
  86. and the newer 32 bit CardBus cards. If you want to use CardBus
  87. cards, you need to say Y here and also to "CardBus support" below.
  88. To use your PC-cards, you will need supporting software from David
  89. Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
  90. for location). Please also read the PCMCIA-HOWTO, available from
  91. <http://www.tldp.org/docs.html#howto>.
  92. To compile this driver as modules, choose M here: the
  93. modules will be called pcmcia_core and ds.
  94. config SBUS
  95. bool
  96. default y
  97. config SBUSCHAR
  98. bool
  99. default y
  100. config SERIAL_CONSOLE
  101. bool
  102. default y
  103. ---help---
  104. If you say Y here, it will be possible to use a serial port as the
  105. system console (the system console is the device which receives all
  106. kernel messages and warnings and which allows logins in single user
  107. mode). This could be useful if some terminal or printer is connected
  108. to that serial port.
  109. Even if you say Y here, the currently visible virtual console
  110. (/dev/tty0) will still be used as the system console by default, but
  111. you can alter that using a kernel command line option such as
  112. "console=ttyS1". (Try "man bootparam" or see the documentation of
  113. your boot loader (silo) about how to pass options to the kernel at
  114. boot time.)
  115. If you don't have a graphics card installed and you say Y here, the
  116. kernel will automatically use the first serial line, /dev/ttyS0, as
  117. system console.
  118. If unsure, say N.
  119. config SUN_AUXIO
  120. bool
  121. default y
  122. config SUN_IO
  123. bool
  124. default y
  125. config RWSEM_GENERIC_SPINLOCK
  126. bool
  127. default y
  128. config RWSEM_XCHGADD_ALGORITHM
  129. bool
  130. config GENERIC_FIND_NEXT_BIT
  131. bool
  132. default y
  133. config GENERIC_HWEIGHT
  134. bool
  135. default y
  136. config GENERIC_CALIBRATE_DELAY
  137. bool
  138. default y
  139. config ARCH_MAY_HAVE_PC_FDC
  140. bool
  141. default y
  142. config ARCH_HAS_ILOG2_U32
  143. bool
  144. default n
  145. config ARCH_HAS_ILOG2_U64
  146. bool
  147. default n
  148. config EMULATED_CMPXCHG
  149. bool
  150. default y
  151. help
  152. Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
  153. is emulated, and therefore it is not completely atomic.
  154. config SUN_PM
  155. bool
  156. default y
  157. help
  158. Enable power management and CPU standby features on supported
  159. SPARC platforms.
  160. config SUN4
  161. bool "Support for SUN4 machines (disables SUN4[CDM] support)"
  162. depends on !SMP
  163. default n
  164. help
  165. Say Y here if, and only if, your machine is a sun4. Note that
  166. a kernel compiled with this option will run only on sun4.
  167. (And the current version will probably work only on sun4/330.)
  168. if !SUN4
  169. config PCI
  170. bool "Support for PCI and PS/2 keyboard/mouse"
  171. help
  172. CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
  173. CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
  174. All of these platforms are extremely obscure, so say N if unsure.
  175. config PCI_SYSCALL
  176. def_bool PCI
  177. source "drivers/pci/Kconfig"
  178. endif
  179. config NO_DMA
  180. def_bool !PCI
  181. config SUN_OPENPROMFS
  182. tristate "Openprom tree appears in /proc/openprom"
  183. help
  184. If you say Y, the OpenPROM device tree will be available as a
  185. virtual file system, which you can mount to /proc/openprom by "mount
  186. -t openpromfs none /proc/openprom".
  187. To compile the /proc/openprom support as a module, choose M here: the
  188. module will be called openpromfs.
  189. Only choose N if you know in advance that you will not need to modify
  190. OpenPROM settings on the running system.
  191. config SPARC_LED
  192. tristate "Sun4m LED driver"
  193. help
  194. This driver toggles the front-panel LED on sun4m systems
  195. in a user-specifiable manner. Its state can be probed
  196. by reading /proc/led and its blinking mode can be changed
  197. via writes to /proc/led
  198. source "fs/Kconfig.binfmt"
  199. config SUNOS_EMUL
  200. bool "SunOS binary emulation"
  201. help
  202. This allows you to run most SunOS binaries. If you want to do this,
  203. say Y here and place appropriate files in /usr/gnemul/sunos. See
  204. <http://www.ultralinux.org/faq.html> for more information. If you
  205. want to run SunOS binaries on an Ultra you must also say Y to
  206. "Kernel support for 32-bit a.out binaries" above.
  207. source "mm/Kconfig"
  208. endmenu
  209. source "net/Kconfig"
  210. source "drivers/Kconfig"
  211. if !SUN4
  212. source "drivers/sbus/char/Kconfig"
  213. endif
  214. # This one must be before the filesystem configs. -DaveM
  215. menu "Unix98 PTY support"
  216. config UNIX98_PTYS
  217. bool "Unix98 PTY support"
  218. ---help---
  219. A pseudo terminal (PTY) is a software device consisting of two
  220. halves: a master and a slave. The slave device behaves identical to
  221. a physical terminal; the master device is used by a process to
  222. read data from and write data to the slave, thereby emulating a
  223. terminal. Typical programs for the master side are telnet servers
  224. and xterms.
  225. Linux has traditionally used the BSD-like names /dev/ptyxx for
  226. masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
  227. has a number of problems. The GNU C library glibc 2.1 and later,
  228. however, supports the Unix98 naming standard: in order to acquire a
  229. pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
  230. terminal is then made available to the process and the pseudo
  231. terminal slave can be accessed as /dev/pts/<number>. What was
  232. traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
  233. The entries in /dev/pts/ are created on the fly by a virtual
  234. file system; therefore, if you say Y here you should say Y to
  235. "/dev/pts file system for Unix98 PTYs" as well.
  236. If you want to say Y here, you need to have the C library glibc 2.1
  237. or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
  238. Read the instructions in <file:Documentation/Changes> pertaining to
  239. pseudo terminals. It's safe to say N.
  240. config UNIX98_PTY_COUNT
  241. int "Maximum number of Unix98 PTYs in use (0-2048)"
  242. depends on UNIX98_PTYS
  243. default "256"
  244. help
  245. The maximum number of Unix98 PTYs that can be used at any one time.
  246. The default is 256, and should be enough for desktop systems. Server
  247. machines which support incoming telnet/rlogin/ssh connections and/or
  248. serve several X terminals may want to increase this: every incoming
  249. connection and every xterm uses up one PTY.
  250. When not in use, each additional set of 256 PTYs occupy
  251. approximately 8 KB of kernel memory on 32-bit architectures.
  252. endmenu
  253. source "fs/Kconfig"
  254. source "kernel/Kconfig.instrumentation"
  255. source "arch/sparc/Kconfig.debug"
  256. source "security/Kconfig"
  257. source "crypto/Kconfig"
  258. source "lib/Kconfig"