arch/sparc/Kconfig

   1 # For a description of the syntax of this configuration file,
   2 # see Documentation/kbuild/kconfig-language.txt.
   3 #
   4
   5 mainmenu "Linux/SPARC Kernel Configuration"
   6
   7 config MMU
   8         bool
   9         default y
  10
  11 config HIGHMEM
  12         bool
  13         default y
  14
  15 config ZONE_DMA
  16         bool
  17         default y
  18
  19 config GENERIC_ISA_DMA
  20         bool
  21         default y
  22
  23 config GENERIC_GPIO
  24         bool
  25         help
  26           Generic GPIO API support
  27
  28 config ARCH_NO_VIRT_TO_BUS
  29         def_bool y
  30
  31 config OF
  32         def_bool y
  33
  34 config HZ
  35         int
  36         default 100
  37
  38 source "init/Kconfig"
  39
  40 source "kernel/Kconfig.freezer"
  41
  42 menu "General machine setup"
  43
  44 config SMP
  45         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  46         ---help---
  47           This enables support for systems with more than one CPU. If you have
  48           a system with only one CPU, say N. If you have a system with more
  49           than one CPU, say Y.
  50
  51           If you say N here, the kernel will run on single and multiprocessor
  52           machines, but will use only one CPU of a multiprocessor machine. If
  53           you say Y here, the kernel will run on many, but not all,
  54           singleprocessor machines. On a singleprocessor machine, the kernel
  55           will run faster if you say N here.
  56
  57           People using multiprocessor machines who say Y here should also say
  58           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  59           Management" code will be disabled if you say Y here.
  60
  61           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  62           available at <http://www.tldp.org/docs.html#howto>.
  63
  64           If you don't know what to do here, say N.
  65
  66 config NR_CPUS
  67         int "Maximum number of CPUs (2-32)"
  68         range 2 32
  69         depends on SMP
  70         default "32"
  71
  72 config SPARC
  73         bool
  74         default y
  75         select HAVE_IDE
  76         select HAVE_OPROFILE
  77         select HAVE_ARCH_KGDB if !SMP
  78         select HAVE_ARCH_TRACEHOOK
  79         select ARCH_WANT_OPTIONAL_GPIOLIB
  80         select RTC_CLASS
  81         select RTC_DRV_M48T59
  82
  83 # Identify this as a Sparc32 build
  84 config SPARC32
  85         bool
  86         default y
  87         help
  88           SPARC is a family of RISC microprocessors designed and marketed by
  89           Sun Microsystems, incorporated.  They are very widely found in Sun
  90           workstations and clones. This port covers the original 32-bit SPARC;
  91           it is old and stable and usually considered one of the "big three"
  92           along with the Intel and Alpha ports.  The UltraLinux project
  93           maintains both the SPARC32 and SPARC64 ports; its web page is
  94           available at <http://www.ultralinux.org/>.
  95
  96 # Global things across all Sun machines.
  97 config ISA
  98         bool
  99         help
 100           ISA is found on Espresso only and is not supported currently.
 101           Say N
 102
 103 config EISA
 104         bool
 105         help
 106           EISA is not supported.
 107           Say N
 108
 109 config MCA
 110         bool
 111         help
 112           MCA is not supported.
 113           Say N
 114
 115 config PCMCIA
 116         tristate
 117         ---help---
 118           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 119           computer.  These are credit-card size devices such as network cards,
 120           modems or hard drives often used with laptops computers.  There are
 121           actually two varieties of these cards: the older 16 bit PCMCIA cards
 122           and the newer 32 bit CardBus cards.  If you want to use CardBus
 123           cards, you need to say Y here and also to "CardBus support" below.
 124
 125           To use your PC-cards, you will need supporting software from David
 126           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 127           for location).  Please also read the PCMCIA-HOWTO, available from
 128           <http://www.tldp.org/docs.html#howto>.
 129
 130           To compile this driver as modules, choose M here: the
 131           modules will be called pcmcia_core and ds.
 132
 133 config SBUS
 134         bool
 135         default y
 136
 137 config SBUSCHAR
 138         bool
 139         default y
 140
 141 config SERIAL_CONSOLE
 142         bool
 143         default y
 144         ---help---
 145           If you say Y here, it will be possible to use a serial port as the
 146           system console (the system console is the device which receives all
 147           kernel messages and warnings and which allows logins in single user
 148           mode). This could be useful if some terminal or printer is connected
 149           to that serial port.
 150
 151           Even if you say Y here, the currently visible virtual console
 152           (/dev/tty0) will still be used as the system console by default, but
 153           you can alter that using a kernel command line option such as
 154           "console=ttyS1". (Try "man bootparam" or see the documentation of
 155           your boot loader (silo) about how to pass options to the kernel at
 156           boot time.)
 157
 158           If you don't have a graphics card installed and you say Y here, the
 159           kernel will automatically use the first serial line, /dev/ttyS0, as
 160           system console.
 161
 162           If unsure, say N.
 163
 164 config SUN_AUXIO
 165         bool
 166         default y
 167
 168 config SUN_IO
 169         bool
 170         default y
 171
 172 config RWSEM_GENERIC_SPINLOCK
 173         bool
 174         default y
 175
 176 config RWSEM_XCHGADD_ALGORITHM
 177         bool
 178
 179 config GENERIC_FIND_NEXT_BIT
 180         bool
 181         default y
 182
 183 config GENERIC_HWEIGHT
 184         bool
 185         default y
 186
 187 config GENERIC_CALIBRATE_DELAY
 188         bool
 189         default y
 190
 191 config ARCH_MAY_HAVE_PC_FDC
 192         bool
 193         default y
 194
 195 config ARCH_HAS_ILOG2_U32
 196         bool
 197         default n
 198
 199 config ARCH_HAS_ILOG2_U64
 200         bool
 201         default n
 202
 203 config EMULATED_CMPXCHG
 204         bool
 205         default y
 206         help
 207           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 208           is emulated, and therefore it is not completely atomic.
 209
 210 config SUN_PM
 211         bool
 212         default y
 213         help
 214           Enable power management and CPU standby features on supported
 215           SPARC platforms.
 216
 217 config PCI
 218         bool "Support for PCI and PS/2 keyboard/mouse"
 219         help
 220           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 221           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 222           All of these platforms are extremely obscure, so say N if unsure.
 223
 224 config PCI_SYSCALL
 225         def_bool PCI
 226
 227 source "drivers/pci/Kconfig"
 228
 229 config SUN_OPENPROMFS
 230         tristate "Openprom tree appears in /proc/openprom"
 231         help
 232           If you say Y, the OpenPROM device tree will be available as a
 233           virtual file system, which you can mount to /proc/openprom by "mount
 234           -t openpromfs none /proc/openprom".
 235
 236           To compile the /proc/openprom support as a module, choose M here: the
 237           module will be called openpromfs.
 238
 239           Only choose N if you know in advance that you will not need to modify
 240           OpenPROM settings on the running system.
 241
 242 config SPARC_LED
 243         tristate "Sun4m LED driver"
 244         help
 245           This driver toggles the front-panel LED on sun4m systems
 246           in a user-specifiable manner.  Its state can be probed
 247           by reading /proc/led and its blinking mode can be changed
 248           via writes to /proc/led
 249
 250 source "fs/Kconfig.binfmt"
 251
 252 source "mm/Kconfig"
 253
 254 endmenu
 255
 256 source "net/Kconfig"
 257
 258 source "drivers/Kconfig"
 259
 260 source "drivers/sbus/char/Kconfig"
 261
 262 # This one must be before the filesystem configs. -DaveM
 263
 264 menu "Unix98 PTY support"
 265
 266 config UNIX98_PTYS
 267         bool "Unix98 PTY support"
 268         ---help---
 269           A pseudo terminal (PTY) is a software device consisting of two
 270           halves: a master and a slave. The slave device behaves identical to
 271           a physical terminal; the master device is used by a process to
 272           read data from and write data to the slave, thereby emulating a
 273           terminal. Typical programs for the master side are telnet servers
 274           and xterms.
 275
 276           Linux has traditionally used the BSD-like names /dev/ptyxx for
 277           masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
 278           has a number of problems. The GNU C library glibc 2.1 and later,
 279           however, supports the Unix98 naming standard: in order to acquire a
 280           pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
 281           terminal is then made available to the process and the pseudo
 282           terminal slave can be accessed as /dev/pts/<number>. What was
 283           traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
 284
 285           The entries in /dev/pts/ are created on the fly by a virtual
 286           file system; therefore, if you say Y here you should say Y to
 287           "/dev/pts file system for Unix98 PTYs" as well.
 288
 289           If you want to say Y here, you need to have the C library glibc 2.1
 290           or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
 291           Read the instructions in <file:Documentation/Changes> pertaining to
 292           pseudo terminals. It's safe to say N.
 293
 294 endmenu
 295
 296 source "fs/Kconfig"
 297
 298 source "arch/sparc/Kconfig.debug"
 299
 300 source "security/Kconfig"
 301
 302 source "crypto/Kconfig"
 303
 304 source "lib/Kconfig"