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 HIGHMEM 13 bool 14 default y 15 16config ZONE_DMA 17 bool 18 default y 19 20config GENERIC_ISA_DMA 21 bool 22 default y 23 24config ARCH_NO_VIRT_TO_BUS 25 def_bool y 26 27config OF 28 def_bool y 29 30config ARCH_SUPPORTS_AOUT 31 def_bool y 32 33config HZ 34 int 35 default 100 36 37source "init/Kconfig" 38 39menu "General machine setup" 40 41config SMP 42 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 43 ---help--- 44 This enables support for systems with more than one CPU. If you have 45 a system with only one CPU, say N. If you have a system with more 46 than one CPU, say Y. 47 48 If you say N here, the kernel will run on single and multiprocessor 49 machines, but will use only one CPU of a multiprocessor machine. If 50 you say Y here, the kernel will run on many, but not all, 51 singleprocessor machines. On a singleprocessor machine, the kernel 52 will run faster if you say N here. 53 54 People using multiprocessor machines who say Y here should also say 55 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 56 Management" code will be disabled if you say Y here. 57 58 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 59 available at <http://www.tldp.org/docs.html#howto>. 60 61 If you don't know what to do here, say N. 62 63config NR_CPUS 64 int "Maximum number of CPUs (2-32)" 65 range 2 32 66 depends on SMP 67 default "32" 68 69config SPARC 70 bool 71 default y 72 select HAVE_IDE 73 select HAVE_OPROFILE 74 75# Identify this as a Sparc32 build 76config SPARC32 77 bool 78 default y 79 help 80 SPARC is a family of RISC microprocessors designed and marketed by 81 Sun Microsystems, incorporated. They are very widely found in Sun 82 workstations and clones. This port covers the original 32-bit SPARC; 83 it is old and stable and usually considered one of the "big three" 84 along with the Intel and Alpha ports. The UltraLinux project 85 maintains both the SPARC32 and SPARC64 ports; its web page is 86 available at <http://www.ultralinux.org/>. 87 88# Global things across all Sun machines. 89config ISA 90 bool 91 help 92 ISA is found on Espresso only and is not supported currently. 93 Say N 94 95config EISA 96 bool 97 help 98 EISA is not supported. 99 Say N 100 101config MCA 102 bool 103 help 104 MCA is not supported. 105 Say N 106 107config PCMCIA 108 tristate 109 ---help--- 110 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux 111 computer. These are credit-card size devices such as network cards, 112 modems or hard drives often used with laptops computers. There are 113 actually two varieties of these cards: the older 16 bit PCMCIA cards 114 and the newer 32 bit CardBus cards. If you want to use CardBus 115 cards, you need to say Y here and also to "CardBus support" below. 116 117 To use your PC-cards, you will need supporting software from David 118 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> 119 for location). Please also read the PCMCIA-HOWTO, available from 120 <http://www.tldp.org/docs.html#howto>. 121 122 To compile this driver as modules, choose M here: the 123 modules will be called pcmcia_core and ds. 124 125config SBUS 126 bool 127 default y 128 129config SBUSCHAR 130 bool 131 default y 132 133config SERIAL_CONSOLE 134 bool 135 default y 136 ---help--- 137 If you say Y here, it will be possible to use a serial port as the 138 system console (the system console is the device which receives all 139 kernel messages and warnings and which allows logins in single user 140 mode). This could be useful if some terminal or printer is connected 141 to that serial port. 142 143 Even if you say Y here, the currently visible virtual console 144 (/dev/tty0) will still be used as the system console by default, but 145 you can alter that using a kernel command line option such as 146 "console=ttyS1". (Try "man bootparam" or see the documentation of 147 your boot loader (silo) about how to pass options to the kernel at 148 boot time.) 149 150 If you don't have a graphics card installed and you say Y here, the 151 kernel will automatically use the first serial line, /dev/ttyS0, as 152 system console. 153 154 If unsure, say N. 155 156config SUN_AUXIO 157 bool 158 default y 159 160config SUN_IO 161 bool 162 default y 163 164config RWSEM_GENERIC_SPINLOCK 165 bool 166 default y 167 168config RWSEM_XCHGADD_ALGORITHM 169 bool 170 171config GENERIC_FIND_NEXT_BIT 172 bool 173 default y 174 175config GENERIC_HWEIGHT 176 bool 177 default y 178 179config GENERIC_CALIBRATE_DELAY 180 bool 181 default y 182 183config ARCH_MAY_HAVE_PC_FDC 184 bool 185 default y 186 187config ARCH_HAS_ILOG2_U32 188 bool 189 default n 190 191config ARCH_HAS_ILOG2_U64 192 bool 193 default n 194 195config EMULATED_CMPXCHG 196 bool 197 default y 198 help 199 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 200 is emulated, and therefore it is not completely atomic. 201 202config SUN_PM 203 bool 204 default y 205 help 206 Enable power management and CPU standby features on supported 207 SPARC platforms. 208 209config SUN4 210 bool "Support for SUN4 machines (disables SUN4[CDM] support)" 211 depends on !SMP 212 default n 213 help 214 Say Y here if, and only if, your machine is a sun4. Note that 215 a kernel compiled with this option will run only on sun4. 216 (And the current version will probably work only on sun4/330.) 217 218if !SUN4 219 220config PCI 221 bool "Support for PCI and PS/2 keyboard/mouse" 222 help 223 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 224 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 225 All of these platforms are extremely obscure, so say N if unsure. 226 227config PCI_SYSCALL 228 def_bool PCI 229 230source "drivers/pci/Kconfig" 231 232endif 233 234config NO_DMA 235 def_bool !PCI 236 237config SUN_OPENPROMFS 238 tristate "Openprom tree appears in /proc/openprom" 239 help 240 If you say Y, the OpenPROM device tree will be available as a 241 virtual file system, which you can mount to /proc/openprom by "mount 242 -t openpromfs none /proc/openprom". 243 244 To compile the /proc/openprom support as a module, choose M here: the 245 module will be called openpromfs. 246 247 Only choose N if you know in advance that you will not need to modify 248 OpenPROM settings on the running system. 249 250config SPARC_LED 251 tristate "Sun4m LED driver" 252 help 253 This driver toggles the front-panel LED on sun4m systems 254 in a user-specifiable manner. Its state can be probed 255 by reading /proc/led and its blinking mode can be changed 256 via writes to /proc/led 257 258source "fs/Kconfig.binfmt" 259 260config SUNOS_EMUL 261 bool "SunOS binary emulation" 262 help 263 This allows you to run most SunOS binaries. If you want to do this, 264 say Y here and place appropriate files in /usr/gnemul/sunos. See 265 <http://www.ultralinux.org/faq.html> for more information. If you 266 want to run SunOS binaries on an Ultra you must also say Y to 267 "Kernel support for 32-bit a.out binaries" above. 268 269source "mm/Kconfig" 270 271endmenu 272 273source "net/Kconfig" 274 275source "drivers/Kconfig" 276 277if !SUN4 278source "drivers/sbus/char/Kconfig" 279endif 280 281# This one must be before the filesystem configs. -DaveM 282 283menu "Unix98 PTY support" 284 285config UNIX98_PTYS 286 bool "Unix98 PTY support" 287 ---help--- 288 A pseudo terminal (PTY) is a software device consisting of two 289 halves: a master and a slave. The slave device behaves identical to 290 a physical terminal; the master device is used by a process to 291 read data from and write data to the slave, thereby emulating a 292 terminal. Typical programs for the master side are telnet servers 293 and xterms. 294 295 Linux has traditionally used the BSD-like names /dev/ptyxx for 296 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme 297 has a number of problems. The GNU C library glibc 2.1 and later, 298 however, supports the Unix98 naming standard: in order to acquire a 299 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo 300 terminal is then made available to the process and the pseudo 301 terminal slave can be accessed as /dev/pts/<number>. What was 302 traditionally /dev/ttyp2 will then be /dev/pts/2, for example. 303 304 The entries in /dev/pts/ are created on the fly by a virtual 305 file system; therefore, if you say Y here you should say Y to 306 "/dev/pts file system for Unix98 PTYs" as well. 307 308 If you want to say Y here, you need to have the C library glibc 2.1 309 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*"). 310 Read the instructions in <file:Documentation/Changes> pertaining to 311 pseudo terminals. It's safe to say N. 312 313config UNIX98_PTY_COUNT 314 int "Maximum number of Unix98 PTYs in use (0-2048)" 315 depends on UNIX98_PTYS 316 default "256" 317 help 318 The maximum number of Unix98 PTYs that can be used at any one time. 319 The default is 256, and should be enough for desktop systems. Server 320 machines which support incoming telnet/rlogin/ssh connections and/or 321 serve several X terminals may want to increase this: every incoming 322 connection and every xterm uses up one PTY. 323 324 When not in use, each additional set of 256 PTYs occupy 325 approximately 8 KB of kernel memory on 32-bit architectures. 326 327endmenu 328 329source "fs/Kconfig" 330 331source "arch/sparc/Kconfig.debug" 332 333source "security/Kconfig" 334 335source "crypto/Kconfig" 336 337source "lib/Kconfig" 338