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