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 6mainmenu "Linux/SPARC Kernel Configuration" 7 8config MMU 9 bool 10 default y 11 12config UID16 13 bool 14 default y 15 16config HIGHMEM 17 bool 18 default y 19 20config GENERIC_ISA_DMA 21 bool 22 default y 23 24config GENERIC_IOMAP 25 bool 26 default y 27 28source "init/Kconfig" 29 30menu "General machine setup" 31 32config SMP 33 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 34 depends on BROKEN 35 ---help--- 36 This enables support for systems with more than one CPU. If you have 37 a system with only one CPU, say N. If you have a system with more 38 than one CPU, say Y. 39 40 If you say N here, the kernel will run on single and multiprocessor 41 machines, but will use only one CPU of a multiprocessor machine. If 42 you say Y here, the kernel will run on many, but not all, 43 singleprocessor machines. On a singleprocessor machine, the kernel 44 will run faster if you say N here. 45 46 People using multiprocessor machines who say Y here should also say 47 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 48 Management" code will be disabled if you say Y here. 49 50 See also the <file:Documentation/smp.txt>, 51 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 52 <http://www.tldp.org/docs.html#howto>. 53 54 If you don't know what to do here, say N. 55 56config NR_CPUS 57 int "Maximum number of CPUs (2-32)" 58 range 2 32 59 depends on SMP 60 default "32" 61 62# Identify this as a Sparc32 build 63config SPARC32 64 bool 65 default y 66 help 67 SPARC is a family of RISC microprocessors designed and marketed by 68 Sun Microsystems, incorporated. They are very widely found in Sun 69 workstations and clones. This port covers the original 32-bit SPARC; 70 it is old and stable and usually considered one of the "big three" 71 along with the Intel and Alpha ports. The UltraLinux project 72 maintains both the SPARC32 and SPARC64 ports; its web page is 73 available at <http://www.ultralinux.org/>. 74 75# Global things across all Sun machines. 76config ISA 77 bool 78 help 79 ISA is found on Espresso only and is not supported currently. 80 Say N 81 82config EISA 83 bool 84 help 85 EISA is not supported. 86 Say N 87 88config MCA 89 bool 90 help 91 MCA is not supported. 92 Say N 93 94config PCMCIA 95 tristate 96 ---help--- 97 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux 98 computer. These are credit-card size devices such as network cards, 99 modems or hard drives often used with laptops computers. There are 100 actually two varieties of these cards: the older 16 bit PCMCIA cards 101 and the newer 32 bit CardBus cards. If you want to use CardBus 102 cards, you need to say Y here and also to "CardBus support" below. 103 104 To use your PC-cards, you will need supporting software from David 105 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> 106 for location). Please also read the PCMCIA-HOWTO, available from 107 <http://www.tldp.org/docs.html#howto>. 108 109 To compile this driver as modules, choose M here: the 110 modules will be called pcmcia_core and ds. 111 112config SBUS 113 bool 114 default y 115 116config SBUSCHAR 117 bool 118 default y 119 120config SERIAL_CONSOLE 121 bool 122 default y 123 ---help--- 124 If you say Y here, it will be possible to use a serial port as the 125 system console (the system console is the device which receives all 126 kernel messages and warnings and which allows logins in single user 127 mode). This could be useful if some terminal or printer is connected 128 to that serial port. 129 130 Even if you say Y here, the currently visible virtual console 131 (/dev/tty0) will still be used as the system console by default, but 132 you can alter that using a kernel command line option such as 133 "console=ttyS1". (Try "man bootparam" or see the documentation of 134 your boot loader (silo) about how to pass options to the kernel at 135 boot time.) 136 137 If you don't have a graphics card installed and you say Y here, the 138 kernel will automatically use the first serial line, /dev/ttyS0, as 139 system console. 140 141 If unsure, say N. 142 143config SUN_AUXIO 144 bool 145 default y 146 147config SUN_IO 148 bool 149 default y 150 151config RWSEM_GENERIC_SPINLOCK 152 bool 153 default y 154 155config RWSEM_XCHGADD_ALGORITHM 156 bool 157 158config GENERIC_CALIBRATE_DELAY 159 bool 160 default y 161 162config ARCH_MAY_HAVE_PC_FDC 163 bool 164 default y 165 166config SUN_PM 167 bool 168 default y 169 help 170 Enable power management and CPU standby features on supported 171 SPARC platforms. 172 173config SUN4 174 bool "Support for SUN4 machines (disables SUN4[CDM] support)" 175 depends on !SMP 176 default n 177 help 178 Say Y here if, and only if, your machine is a sun4. Note that 179 a kernel compiled with this option will run only on sun4. 180 (And the current version will probably work only on sun4/330.) 181 182if !SUN4 183 184config PCI 185 bool "Support for PCI and PS/2 keyboard/mouse" 186 help 187 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 188 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 189 All of these platforms are extremely obscure, so say N if unsure. 190 191source "drivers/pci/Kconfig" 192 193endif 194 195config SUN_OPENPROMFS 196 tristate "Openprom tree appears in /proc/openprom" 197 help 198 If you say Y, the OpenPROM device tree will be available as a 199 virtual file system, which you can mount to /proc/openprom by "mount 200 -t openpromfs none /proc/openprom". 201 202 To compile the /proc/openprom support as a module, choose M here: the 203 module will be called openpromfs. 204 205 Only choose N if you know in advance that you will not need to modify 206 OpenPROM settings on the running system. 207 208source "fs/Kconfig.binfmt" 209 210config SUNOS_EMUL 211 bool "SunOS binary emulation" 212 help 213 This allows you to run most SunOS binaries. If you want to do this, 214 say Y here and place appropriate files in /usr/gnemul/sunos. See 215 <http://www.ultralinux.org/faq.html> for more information. If you 216 want to run SunOS binaries on an Ultra you must also say Y to 217 "Kernel support for 32-bit a.out binaries" above. 218 219source "mm/Kconfig" 220 221endmenu 222 223source "net/Kconfig" 224 225source "drivers/Kconfig" 226 227if !SUN4 228source "drivers/sbus/char/Kconfig" 229endif 230 231# This one must be before the filesystem configs. -DaveM 232 233menu "Unix98 PTY support" 234 235config UNIX98_PTYS 236 bool "Unix98 PTY support" 237 ---help--- 238 A pseudo terminal (PTY) is a software device consisting of two 239 halves: a master and a slave. The slave device behaves identical to 240 a physical terminal; the master device is used by a process to 241 read data from and write data to the slave, thereby emulating a 242 terminal. Typical programs for the master side are telnet servers 243 and xterms. 244 245 Linux has traditionally used the BSD-like names /dev/ptyxx for 246 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme 247 has a number of problems. The GNU C library glibc 2.1 and later, 248 however, supports the Unix98 naming standard: in order to acquire a 249 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo 250 terminal is then made available to the process and the pseudo 251 terminal slave can be accessed as /dev/pts/<number>. What was 252 traditionally /dev/ttyp2 will then be /dev/pts/2, for example. 253 254 The entries in /dev/pts/ are created on the fly by a virtual 255 file system; therefore, if you say Y here you should say Y to 256 "/dev/pts file system for Unix98 PTYs" as well. 257 258 If you want to say Y here, you need to have the C library glibc 2.1 259 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*"). 260 Read the instructions in <file:Documentation/Changes> pertaining to 261 pseudo terminals. It's safe to say N. 262 263config UNIX98_PTY_COUNT 264 int "Maximum number of Unix98 PTYs in use (0-2048)" 265 depends on UNIX98_PTYS 266 default "256" 267 help 268 The maximum number of Unix98 PTYs that can be used at any one time. 269 The default is 256, and should be enough for desktop systems. Server 270 machines which support incoming telnet/rlogin/ssh connections and/or 271 serve several X terminals may want to increase this: every incoming 272 connection and every xterm uses up one PTY. 273 274 When not in use, each additional set of 256 PTYs occupy 275 approximately 8 KB of kernel memory on 32-bit architectures. 276 277endmenu 278 279source "fs/Kconfig" 280 281source "arch/sparc/Kconfig.debug" 282 283source "security/Kconfig" 284 285source "crypto/Kconfig" 286 287source "lib/Kconfig" 288