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 24source "init/Kconfig" 25 26menu "General machine setup" 27 28config SMP 29 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 30 depends on BROKEN 31 ---help--- 32 This enables support for systems with more than one CPU. If you have 33 a system with only one CPU, say N. If you have a system with more 34 than one CPU, say Y. 35 36 If you say N here, the kernel will run on single and multiprocessor 37 machines, but will use only one CPU of a multiprocessor machine. If 38 you say Y here, the kernel will run on many, but not all, 39 singleprocessor machines. On a singleprocessor machine, the kernel 40 will run faster if you say N here. 41 42 People using multiprocessor machines who say Y here should also say 43 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 44 Management" code will be disabled if you say Y here. 45 46 See also the <file:Documentation/smp.txt>, 47 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 48 <http://www.tldp.org/docs.html#howto>. 49 50 If you don't know what to do here, say N. 51 52config NR_CPUS 53 int "Maximum number of CPUs (2-32)" 54 range 2 32 55 depends on SMP 56 default "32" 57 58# Identify this as a Sparc32 build 59config SPARC32 60 bool 61 default y 62 help 63 SPARC is a family of RISC microprocessors designed and marketed by 64 Sun Microsystems, incorporated. They are very widely found in Sun 65 workstations and clones. This port covers the original 32-bit SPARC; 66 it is old and stable and usually considered one of the "big three" 67 along with the Intel and Alpha ports. The UltraLinux project 68 maintains both the SPARC32 and SPARC64 ports; its web page is 69 available at <http://www.ultralinux.org/>. 70 71# Global things across all Sun machines. 72config ISA 73 bool 74 help 75 ISA is found on Espresso only and is not supported currently. 76 Say N 77 78config EISA 79 bool 80 help 81 EISA is not supported. 82 Say N 83 84config MCA 85 bool 86 help 87 MCA is not supported. 88 Say N 89 90config PCMCIA 91 tristate 92 ---help--- 93 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux 94 computer. These are credit-card size devices such as network cards, 95 modems or hard drives often used with laptops computers. There are 96 actually two varieties of these cards: the older 16 bit PCMCIA cards 97 and the newer 32 bit CardBus cards. If you want to use CardBus 98 cards, you need to say Y here and also to "CardBus support" below. 99 100 To use your PC-cards, you will need supporting software from David 101 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> 102 for location). Please also read the PCMCIA-HOWTO, available from 103 <http://www.tldp.org/docs.html#howto>. 104 105 To compile this driver as modules, choose M here: the 106 modules will be called pcmcia_core and ds. 107 108config SBUS 109 bool 110 default y 111 112config SBUSCHAR 113 bool 114 default y 115 116config SERIAL_CONSOLE 117 bool 118 default y 119 ---help--- 120 If you say Y here, it will be possible to use a serial port as the 121 system console (the system console is the device which receives all 122 kernel messages and warnings and which allows logins in single user 123 mode). This could be useful if some terminal or printer is connected 124 to that serial port. 125 126 Even if you say Y here, the currently visible virtual console 127 (/dev/tty0) will still be used as the system console by default, but 128 you can alter that using a kernel command line option such as 129 "console=ttyS1". (Try "man bootparam" or see the documentation of 130 your boot loader (silo) about how to pass options to the kernel at 131 boot time.) 132 133 If you don't have a graphics card installed and you say Y here, the 134 kernel will automatically use the first serial line, /dev/ttyS0, as 135 system console. 136 137 If unsure, say N. 138 139config SUN_AUXIO 140 bool 141 default y 142 143config SUN_IO 144 bool 145 default y 146 147config RWSEM_GENERIC_SPINLOCK 148 bool 149 default y 150 151config RWSEM_XCHGADD_ALGORITHM 152 bool 153 154config GENERIC_CALIBRATE_DELAY 155 bool 156 default y 157 158config ARCH_MAY_HAVE_PC_FDC 159 bool 160 default y 161 162config SUN_PM 163 bool 164 default y 165 help 166 Enable power management and CPU standby features on supported 167 SPARC platforms. 168 169config SUN4 170 bool "Support for SUN4 machines (disables SUN4[CDM] support)" 171 depends on !SMP 172 default n 173 help 174 Say Y here if, and only if, your machine is a sun4. Note that 175 a kernel compiled with this option will run only on sun4. 176 (And the current version will probably work only on sun4/330.) 177 178if !SUN4 179 180config PCI 181 bool "Support for PCI and PS/2 keyboard/mouse" 182 help 183 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 184 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 185 All of these platforms are extremely obscure, so say N if unsure. 186 187source "drivers/pci/Kconfig" 188 189endif 190 191config SUN_OPENPROMFS 192 tristate "Openprom tree appears in /proc/openprom" 193 help 194 If you say Y, the OpenPROM device tree will be available as a 195 virtual file system, which you can mount to /proc/openprom by "mount 196 -t openpromfs none /proc/openprom". 197 198 To compile the /proc/openprom support as a module, choose M here: the 199 module will be called openpromfs. 200 201 Only choose N if you know in advance that you will not need to modify 202 OpenPROM settings on the running system. 203 204config SPARC_LED 205 tristate "Sun4m LED driver" 206 help 207 This driver toggles the front-panel LED on sun4m systems 208 in a user-specifyable manner. It's state can be probed 209 by reading /proc/led and it's blinking mode can be changed 210 via writes to /proc/led 211 212source "fs/Kconfig.binfmt" 213 214config SUNOS_EMUL 215 bool "SunOS binary emulation" 216 help 217 This allows you to run most SunOS binaries. If you want to do this, 218 say Y here and place appropriate files in /usr/gnemul/sunos. See 219 <http://www.ultralinux.org/faq.html> for more information. If you 220 want to run SunOS binaries on an Ultra you must also say Y to 221 "Kernel support for 32-bit a.out binaries" above. 222 223source "mm/Kconfig" 224 225endmenu 226 227source "net/Kconfig" 228 229source "drivers/Kconfig" 230 231if !SUN4 232source "drivers/sbus/char/Kconfig" 233endif 234 235# This one must be before the filesystem configs. -DaveM 236 237menu "Unix98 PTY support" 238 239config UNIX98_PTYS 240 bool "Unix98 PTY support" 241 ---help--- 242 A pseudo terminal (PTY) is a software device consisting of two 243 halves: a master and a slave. The slave device behaves identical to 244 a physical terminal; the master device is used by a process to 245 read data from and write data to the slave, thereby emulating a 246 terminal. Typical programs for the master side are telnet servers 247 and xterms. 248 249 Linux has traditionally used the BSD-like names /dev/ptyxx for 250 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme 251 has a number of problems. The GNU C library glibc 2.1 and later, 252 however, supports the Unix98 naming standard: in order to acquire a 253 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo 254 terminal is then made available to the process and the pseudo 255 terminal slave can be accessed as /dev/pts/<number>. What was 256 traditionally /dev/ttyp2 will then be /dev/pts/2, for example. 257 258 The entries in /dev/pts/ are created on the fly by a virtual 259 file system; therefore, if you say Y here you should say Y to 260 "/dev/pts file system for Unix98 PTYs" as well. 261 262 If you want to say Y here, you need to have the C library glibc 2.1 263 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*"). 264 Read the instructions in <file:Documentation/Changes> pertaining to 265 pseudo terminals. It's safe to say N. 266 267config UNIX98_PTY_COUNT 268 int "Maximum number of Unix98 PTYs in use (0-2048)" 269 depends on UNIX98_PTYS 270 default "256" 271 help 272 The maximum number of Unix98 PTYs that can be used at any one time. 273 The default is 256, and should be enough for desktop systems. Server 274 machines which support incoming telnet/rlogin/ssh connections and/or 275 serve several X terminals may want to increase this: every incoming 276 connection and every xterm uses up one PTY. 277 278 When not in use, each additional set of 256 PTYs occupy 279 approximately 8 KB of kernel memory on 32-bit architectures. 280 281endmenu 282 283source "fs/Kconfig" 284 285source "arch/sparc/Kconfig.debug" 286 287source "security/Kconfig" 288 289source "crypto/Kconfig" 290 291source "lib/Kconfig" 292