1 # SPDX-License-Identifier: GPL-2.0 !! 1 #
>> 2 # For a description of the syntax of this configuration file,
>> 3 # see Documentation/kbuild/kconfig-language.txt.
>> 4 #
2 config M68K 5 config M68K
3 bool 6 bool
4 default y 7 default y
5 select ARCH_32BIT_OFF_T <<
6 select ARCH_HAS_BINFMT_FLAT <<
7 select ARCH_HAS_CPU_CACHE_ALIASING <<
8 select ARCH_HAS_CPU_FINALIZE_INIT if M <<
9 select ARCH_HAS_CURRENT_STACK_POINTER <<
10 select ARCH_HAS_DMA_PREP_COHERENT if M <<
11 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if <<
12 select ARCH_HAVE_NMI_SAFE_CMPXCHG if R <<
13 select ARCH_MIGHT_HAVE_PC_PARPORT if I <<
14 select ARCH_NO_PREEMPT if !COLDFIRE <<
15 select ARCH_USE_MEMTEST if MMU_MOTOROL <<
16 select ARCH_WANT_IPC_PARSE_VERSION <<
17 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK <<
18 select DMA_DIRECT_REMAP if M68K_NONCOH <<
19 select GENERIC_ATOMIC64 <<
20 select GENERIC_CPU_DEVICES <<
21 select GENERIC_IOMAP if HAS_IOPORT <<
22 select GENERIC_IRQ_SHOW <<
23 select GENERIC_LIB_ASHLDI3 <<
24 select GENERIC_LIB_ASHRDI3 <<
25 select GENERIC_LIB_LSHRDI3 <<
26 select HAS_IOPORT if PCI || ISA || ATA <<
27 select HAVE_ARCH_SECCOMP <<
28 select HAVE_ARCH_SECCOMP_FILTER <<
29 select HAVE_ASM_MODVERSIONS <<
30 select HAVE_DEBUG_BUGVERBOSE <<
31 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
32 select HAVE_MOD_ARCH_SPECIFIC <<
33 select HAVE_UID16 <<
34 select MMU_GATHER_NO_RANGE if MMU <<
35 select MODULES_USE_ELF_REL <<
36 select MODULES_USE_ELF_RELA <<
37 select NO_DMA if !MMU && !COLDFIRE <<
38 select OLD_SIGACTION <<
39 select OLD_SIGSUSPEND3 <<
40 select UACCESS_MEMCPY if !MMU <<
41 select ZONE_DMA <<
42 8
43 config CPU_BIG_ENDIAN !! 9 config MMU
44 def_bool y <<
45 <<
46 config ARCH_HAS_ILOG2_U32 <<
47 bool 10 bool
>> 11 default y
48 12
49 config ARCH_HAS_ILOG2_U64 !! 13 config UID16
50 bool 14 bool
>> 15 default y
51 16
52 config GENERIC_HWEIGHT !! 17 config RWSEM_GENERIC_SPINLOCK
53 bool 18 bool
54 default y 19 default y
55 20
56 config GENERIC_CALIBRATE_DELAY !! 21 config RWSEM_XCHGADD_ALGORITHM
>> 22 bool
>> 23
>> 24
>> 25 mainmenu "Linux/68k Kernel Configuration"
>> 26
>> 27 source "init/Kconfig"
>> 28
>> 29
>> 30 menu "Platform dependent setup"
>> 31
>> 32 config EISA
57 bool 33 bool
>> 34 ---help---
>> 35 The Extended Industry Standard Architecture (EISA) bus was
>> 36 developed as an open alternative to the IBM MicroChannel bus.
>> 37
>> 38 The EISA bus provided some of the features of the IBM MicroChannel
>> 39 bus while maintaining backward compatibility with cards made for
>> 40 the older ISA bus. The EISA bus saw limited use between 1988 and
>> 41 1995 when it was made obsolete by the PCI bus.
>> 42
>> 43 Say Y here if you are building a kernel for an EISA-based machine.
>> 44
>> 45 Otherwise, say N.
>> 46
>> 47 config MCA
>> 48 bool
>> 49 help
>> 50 MicroChannel Architecture is found in some IBM PS/2 machines and
>> 51 laptops. It is a bus system similar to PCI or ISA. See
>> 52 <file:Documentation/mca.txt> (and especially the web page given
>> 53 there) before attempting to build an MCA bus kernel.
>> 54
>> 55 config PCMCIA
>> 56 tristate
>> 57 ---help---
>> 58 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
>> 59 computer. These are credit-card size devices such as network cards,
>> 60 modems or hard drives often used with laptops computers. There are
>> 61 actually two varieties of these cards: the older 16 bit PCMCIA cards
>> 62 and the newer 32 bit CardBus cards. If you want to use CardBus
>> 63 cards, you need to say Y here and also to "CardBus support" below.
>> 64
>> 65 To use your PC-cards, you will need supporting software from David
>> 66 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
>> 67 for location). Please also read the PCMCIA-HOWTO, available from
>> 68 <http://www.tldp.org/docs.html#howto>.
>> 69
>> 70 To compile this driver as modules, choose M here: the
>> 71 modules will be called pcmcia_core and ds.
>> 72
>> 73 config AMIGA
>> 74 bool "Amiga support"
>> 75 help
>> 76 This option enables support for the Amiga series of computers. If
>> 77 you plan to use this kernel on an Amiga, say Y here and browse the
>> 78 material available in <file:Documentation/m68k>; otherwise say N.
>> 79
>> 80 config ATARI
>> 81 bool "Atari support"
>> 82 help
>> 83 This option enables support for the 68000-based Atari series of
>> 84 computers (including the TT, Falcon and Medusa). If you plan to use
>> 85 this kernel on an Atari, say Y here and browse the material
>> 86 available in <file:Documentation/m68k>; otherwise say N.
>> 87
>> 88 config HADES
>> 89 bool "Hades support"
>> 90 depends on ATARI && BROKEN
>> 91 help
>> 92 This option enables support for the Hades Atari clone. If you plan
>> 93 to use this kernel on a Hades, say Y here; otherwise say N.
>> 94
>> 95 config PCI
>> 96 bool
>> 97 depends on HADES
58 default y 98 default y
>> 99 help
>> 100 Find out whether you have a PCI motherboard. PCI is the name of a
>> 101 bus system, i.e. the way the CPU talks to the other stuff inside
>> 102 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
>> 103 VESA. If you have PCI, say Y, otherwise N.
>> 104
>> 105 The PCI-HOWTO, available from
>> 106 <http://www.tldp.org/docs.html#howto>, contains valuable
>> 107 information about which PCI hardware does work under Linux and which
>> 108 doesn't.
59 109
60 config GENERIC_CSUM !! 110 config MAC
>> 111 bool "Macintosh support"
>> 112 help
>> 113 This option enables support for the Apple Macintosh series of
>> 114 computers (yes, there is experimental support now, at least for part
>> 115 of the series).
>> 116
>> 117 Say N unless you're willing to code the remaining necessary support.
>> 118 ;)
>> 119
>> 120 config NUBUS
61 bool 121 bool
>> 122 depends on MAC
>> 123 default y
62 124
63 config TIME_LOW_RES !! 125 config M68K_L2_CACHE
64 bool 126 bool
>> 127 depends on MAC
65 default y 128 default y
66 129
67 config NO_IOPORT_MAP !! 130 config APOLLO
68 def_bool y !! 131 bool "Apollo support"
>> 132 help
>> 133 Say Y here if you want to run Linux on an MC680x0-based Apollo
>> 134 Domain workstation such as the DN3500.
>> 135
>> 136 config VME
>> 137 bool "VME (Motorola and BVM) support"
>> 138 help
>> 139 Say Y here if you want to build a kernel for a 680x0 based VME
>> 140 board. Boards currently supported include Motorola boards MVME147,
>> 141 MVME162, MVME166, MVME167, MVME172, and MVME177. BVME4000 and
>> 142 BVME6000 boards from BVM Ltd are also supported.
>> 143
>> 144 config MVME147
>> 145 bool "MVME147 support"
>> 146 depends on VME
>> 147 help
>> 148 Say Y to include support for early Motorola VME boards. This will
>> 149 build a kernel which can run on MVME147 single-board computers. If
>> 150 you select this option you will have to select the appropriate
>> 151 drivers for SCSI, Ethernet and serial ports later on.
>> 152
>> 153 config MVME16x
>> 154 bool "MVME162, 166 and 167 support"
>> 155 depends on VME
>> 156 help
>> 157 Say Y to include support for Motorola VME boards. This will build a
>> 158 kernel which can run on MVME162, MVME166, MVME167, MVME172, and
>> 159 MVME177 boards. If you select this option you will have to select
>> 160 the appropriate drivers for SCSI, Ethernet and serial ports later
>> 161 on.
>> 162
>> 163 config BVME6000
>> 164 bool "BVME4000 and BVME6000 support"
>> 165 depends on VME
>> 166 help
>> 167 Say Y to include support for VME boards from BVM Ltd. This will
>> 168 build a kernel which can run on BVME4000 and BVME6000 boards. If
>> 169 you select this option you will have to select the appropriate
>> 170 drivers for SCSI, Ethernet and serial ports later on.
>> 171
>> 172 config HP300
>> 173 bool "HP9000/300 support"
>> 174 help
>> 175 This option enables support for the HP9000/300 series of
>> 176 workstations. Support for these machines is still very experimental.
>> 177 If you plan to try to use the kernel on such a machine say Y here.
>> 178 Everybody else says N.
>> 179
>> 180 config DIO
>> 181 bool "DIO bus support"
>> 182 depends on HP300
>> 183 help
>> 184 Say Y here to enable support for the "DIO" expansion bus used in
>> 185 HP300 machines. If you are using such a system you almost certainly
>> 186 want this.
69 187
70 config HZ !! 188 config SUN3X
71 int !! 189 bool "Sun3x support"
72 default 1000 if CLEOPATRA !! 190 help
73 default 100 !! 191 This option enables support for the Sun 3x series of workstations.
>> 192 Be warned that this support is very experimental. You will also want
>> 193 to say Y to 68030 support and N to the other processors below.
>> 194 Note that Sun 3x kernels are not compatible with Sun 3 hardware.
>> 195 General Linux information on the Sun 3x series (now discontinued)
>> 196 is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.
74 197
75 config PGTABLE_LEVELS !! 198 If you don't want to compile a kernel for a Sun 3x, say N.
76 default 2 if SUN3 || COLDFIRE <<
77 default 3 <<
78 199
79 config MMU !! 200 config SUN3
80 bool "MMU-based Paged Memory Managemen !! 201 bool "Sun3 support"
>> 202 help
>> 203 This option enables support for the Sun 3 series of workstations
>> 204 (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires
>> 205 that all other hardware types must be disabled, as Sun 3 kernels
>> 206 are incompatible with all other m68k targets (including Sun 3x!).
>> 207 Also, you will want to say Y to 68020 support and N to the other
>> 208 processors below.
>> 209
>> 210 If you don't want to compile a kernel exclusively for a Sun 3, say N.
>> 211
>> 212 config Q40
>> 213 bool "Q40/Q60 support"
>> 214 help
>> 215 The Q40 is a Motorola 68040-based successor to the Sinclair QL
>> 216 manufactured in Germany. There is an official Q40 home page at
>> 217 <http://www.q40.de/>. This option enables support for the Q40 and
>> 218 Q60. Select your CPU below. For 68LC060 don't forget to enable FPU
>> 219 emulation.
>> 220
>> 221 comment "Processor type"
>> 222
>> 223 config M68020
>> 224 bool "68020 support"
>> 225 help
>> 226 If you anticipate running this kernel on a computer with a MC68020
>> 227 processor, say Y. Otherwise, say N. Note that the 68020 requires a
>> 228 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
>> 229 Sun 3, which provides its own version.
>> 230
>> 231 config M68030
>> 232 bool "68030 support"
>> 233 help
>> 234 If you anticipate running this kernel on a computer with a MC68030
>> 235 processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
>> 236 work, as it does not include an MMU (Memory Management Unit).
>> 237
>> 238 config M68040
>> 239 bool "68040 support"
>> 240 help
>> 241 If you anticipate running this kernel on a computer with a MC68LC040
>> 242 or MC68040 processor, say Y. Otherwise, say N. Note that an
>> 243 MC68EC040 will not work, as it does not include an MMU (Memory
>> 244 Management Unit).
>> 245
>> 246 config M68060
>> 247 bool "68060 support"
>> 248 help
>> 249 If you anticipate running this kernel on a computer with a MC68060
>> 250 processor, say Y. Otherwise, say N.
>> 251
>> 252 config M68KFPU_EMU
>> 253 bool "Math emulation support (EXPERIMENTAL)"
>> 254 depends on EXPERIMENTAL
>> 255 help
>> 256 At some point in the future, this will cause floating-point math
>> 257 instructions to be emulated by the kernel on machines that lack a
>> 258 floating-point math coprocessor. Thrill-seekers and chronically
>> 259 sleep-deprived psychotic hacker types can say Y now, everyone else
>> 260 should probably wait a while.
>> 261
>> 262 config M68KFPU_EMU_EXTRAPREC
>> 263 bool "Math emulation extra precision"
>> 264 depends on M68KFPU_EMU
>> 265 help
>> 266 The fpu uses normally a few bit more during calculations for
>> 267 correct rounding, the emulator can (often) do the same but this
>> 268 extra calculation can cost quite some time, so you can disable
>> 269 it here. The emulator will then "only" calculate with a 64 bit
>> 270 mantissa and round slightly incorrect, what is more then enough
>> 271 for normal usage.
>> 272
>> 273 config M68KFPU_EMU_ONLY
>> 274 bool "Math emulation only kernel"
>> 275 depends on M68KFPU_EMU
>> 276 help
>> 277 This option prevents any floating-point instructions from being
>> 278 compiled into the kernel, thereby the kernel doesn't save any
>> 279 floating point context anymore during task switches, so this
>> 280 kernel will only be usable on machines without a floating-point
>> 281 math coprocessor. This makes the kernel a bit faster as no tests
>> 282 needs to be executed whether a floating-point instruction in the
>> 283 kernel should be executed or not.
>> 284
>> 285 config ADVANCED
>> 286 bool "Advanced configuration options"
>> 287 ---help---
>> 288 This gives you access to some advanced options for the CPU. The
>> 289 defaults should be fine for most users, but these options may make
>> 290 it possible for you to improve performance somewhat if you know what
>> 291 you are doing.
>> 292
>> 293 Note that the answer to this question won't directly affect the
>> 294 kernel: saying N will just cause the configurator to skip all
>> 295 the questions about these options.
>> 296
>> 297 Most users should say N to this question.
>> 298
>> 299 config RMW_INSNS
>> 300 bool "Use read-modify-write instructions"
>> 301 depends on ADVANCED
>> 302 ---help---
>> 303 This allows to use certain instructions that work with indivisible
>> 304 read-modify-write bus cycles. While this is faster than the
>> 305 workaround of disabling interrupts, it can conflict with DMA
>> 306 ( = direct memory access) on many Amiga systems, and it is also said
>> 307 to destabilize other machines. It is very likely that this will
>> 308 cause serious problems on any Amiga or Atari Medusa if set. The only
>> 309 configuration where it should work are 68030-based Ataris, where it
>> 310 apparently improves performance. But you've been warned! Unless you
>> 311 really know what you are doing, say N. Try Y only if you're quite
>> 312 adventurous.
>> 313
>> 314 config SINGLE_MEMORY_CHUNK
>> 315 bool "Use one physical chunk of memory only"
>> 316 depends on ADVANCED && !SUN3
>> 317 help
>> 318 Ignore all but the first contiguous chunk of physical memory for VM
>> 319 purposes. This will save a few bytes kernel size and may speed up
>> 320 some operations. Say N if not sure.
>> 321
>> 322 config 060_WRITETHROUGH
>> 323 bool "Use write-through caching for 68060 supervisor accesses"
>> 324 depends on ADVANCED && M68060
>> 325 ---help---
>> 326 The 68060 generally uses copyback caching of recently accessed data.
>> 327 Copyback caching means that memory writes will be held in an on-chip
>> 328 cache and only written back to memory some time later. Saying Y
>> 329 here will force supervisor (kernel) accesses to use writethrough
>> 330 caching. Writethrough caching means that data is written to memory
>> 331 straight away, so that cache and memory data always agree.
>> 332 Writethrough caching is less efficient, but is needed for some
>> 333 drivers on 68060 based systems where the 68060 bus snooping signal
>> 334 is hardwired on. The 53c710 SCSI driver is known to suffer from
>> 335 this problem.
>> 336
>> 337 endmenu
>> 338
>> 339
>> 340 menu "General setup"
>> 341
>> 342 source "fs/Kconfig.binfmt"
>> 343
>> 344 config ZORRO
>> 345 bool "Amiga Zorro (AutoConfig) bus support"
>> 346 depends on AMIGA
>> 347 help
>> 348 This enables support for the Zorro bus in the Amiga. If you have
>> 349 expansion cards in your Amiga that conform to the Amiga
>> 350 AutoConfig(tm) specification, say Y, otherwise N. Note that even
>> 351 expansion cards that do not fit in the Zorro slots but fit in e.g.
>> 352 the CPU slot may fall in this category, so you have to say Y to let
>> 353 Linux use these.
>> 354
>> 355 config AMIGA_PCMCIA
>> 356 bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)"
>> 357 depends on AMIGA && EXPERIMENTAL
>> 358 help
>> 359 Include support in the kernel for pcmcia on Amiga 1200 and Amiga
>> 360 600. If you intend to use pcmcia cards say Y; otherwise say N.
>> 361
>> 362 config STRAM_SWAP
>> 363 bool "Support for ST-RAM as swap space"
>> 364 depends on ATARI && BROKEN
>> 365 ---help---
>> 366 Some Atari 68k macines (including the 520STF and 1020STE) divide
>> 367 their addressible memory into ST and TT sections. The TT section
>> 368 (up to 512MB) is the main memory; the ST section (up to 4MB) is
>> 369 accessible to the built-in graphics board, runs slower, and is
>> 370 present mainly for backward compatibility with older machines.
>> 371
>> 372 This enables support for using (parts of) ST-RAM as swap space,
>> 373 instead of as normal system memory. This can first enhance system
>> 374 performance if you have lots of alternate RAM (compared to the size
>> 375 of ST-RAM), because executable code always will reside in faster
>> 376 memory. ST-RAM will remain as ultra-fast swap space. On the other
>> 377 hand, it allows much improved dynamic allocations of ST-RAM buffers
>> 378 for device driver modules (e.g. floppy, ACSI, SLM printer, DMA
>> 379 sound). The probability that such allocations at module load time
>> 380 fail is drastically reduced.
>> 381
>> 382 config STRAM_PROC
>> 383 bool "ST-RAM statistics in /proc"
>> 384 depends on ATARI
>> 385 help
>> 386 Say Y here to report ST-RAM usage statistics in /proc/stram. See
>> 387 the help for CONFIG_STRAM_SWAP for discussion of ST-RAM and its
>> 388 uses.
>> 389
>> 390 config HEARTBEAT
>> 391 bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
>> 392 default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
>> 393 help
>> 394 Use the power-on LED on your machine as a load meter. The exact
>> 395 behavior is platform-dependent, but normally the flash frequency is
>> 396 a hyperbolic function of the 5-minute load average.
>> 397
>> 398 # We have a dedicated heartbeat LED. :-)
>> 399 config PROC_HARDWARE
>> 400 bool "/proc/hardware support"
>> 401 help
>> 402 Say Y here to support the /proc/hardware file, which gives you
>> 403 access to information about the machine you're running on,
>> 404 including the model, CPU, MMU, clock speed, BogoMIPS rating,
>> 405 and memory size.
>> 406
>> 407 config PARPORT
>> 408 tristate "Parallel port support (EXPERIMENTAL)"
>> 409 depends on EXPERIMENTAL
>> 410 ---help---
>> 411 If you want to use devices connected to your machine's parallel port
>> 412 (the connector at the computer with 25 holes), e.g. printer, ZIP
>> 413 drive, PLIP link (Parallel Line Internet Protocol is mainly used to
>> 414 create a mini network by connecting the parallel ports of two local
>> 415 machines) etc., then you need to say Y here; please read
>> 416 <file:Documentation/parport.txt> and
>> 417 <file:drivers/parport/BUGS-parport>.
>> 418
>> 419 For extensive information about drivers for many devices attaching
>> 420 to the parallel port see <http://www.torque.net/linux-pp.html> on
>> 421 the WWW.
>> 422
>> 423 It is possible to share a single parallel port among several devices
>> 424 and it is safe to compile all the corresponding drivers into the
>> 425 kernel. To compile parallel port support as a module, choose M here:
>> 426 the module will be called parport.
>> 427 If you have more than one parallel port and want to specify which
>> 428 port and IRQ to be used by this driver at module load time, take a
>> 429 look at <file:Documentation/parport.txt>.
>> 430
>> 431 If unsure, say Y.
>> 432
>> 433 config PARPORT_AMIGA
>> 434 tristate "Amiga builtin port"
>> 435 depends on AMIGA && PARPORT
>> 436 help
>> 437 Say Y here if you need support for the parallel port hardware on
>> 438 Amiga machines. This code is also available as a module (say M),
>> 439 called parport_amiga. If in doubt, saying N is the safe plan.
>> 440
>> 441 config PARPORT_MFC3
>> 442 tristate "Multiface III parallel port"
>> 443 depends on ZORRO && PARPORT
>> 444 help
>> 445 Say Y here if you need parallel port support for the MFC3 card.
>> 446 This code is also available as a module (say M), called
>> 447 parport_mfc3. If in doubt, saying N is the safe plan.
>> 448
>> 449 config PARPORT_PC
>> 450 bool
>> 451 depends on Q40 && PARPORT
>> 452 default y
>> 453 ---help---
>> 454 You should say Y here if you have a PC-style parallel port. All IBM
>> 455 PC compatible computers and some Alphas have PC-style parallel
>> 456 ports.
>> 457
>> 458 To compile this driver as a module, choose M here: the
>> 459 module will be called parport_pc.
>> 460
>> 461 If unsure, say Y.
>> 462
>> 463 config PARPORT_ATARI
>> 464 tristate "Atari builtin port"
>> 465 depends on ATARI && PARPORT
>> 466 help
>> 467 Say Y here if you need support for the parallel port hardware on
>> 468 Atari machines. This code is also available as a module (say M),
>> 469 called parport_atari. If in doubt, saying N is the safe plan.
>> 470
>> 471 config PRINTER
>> 472 tristate "Parallel printer support"
>> 473 depends on PARPORT
>> 474 ---help---
>> 475 If you intend to attach a printer to the parallel port of your Linux
>> 476 box (as opposed to using a serial printer; if the connector at the
>> 477 printer has 9 or 25 holes ["female"], then it's serial), say Y.
>> 478 Also read the Printing-HOWTO, available from
>> 479 <http://www.tldp.org/docs.html#howto>.
>> 480
>> 481 It is possible to share one parallel port among several devices
>> 482 (e.g. printer and ZIP drive) and it is safe to compile the
>> 483 corresponding drivers into the kernel.
>> 484 To compile this driver as a module, choose M here and read
>> 485 <file:Documentation/parport.txt>. The module will be called lp.
>> 486
>> 487 If you have several parallel ports, you can specify which ports to
>> 488 use with the "lp" kernel command line option. (Try "man bootparam"
>> 489 or see the documentation of your boot loader (lilo or loadlin) about
>> 490 how to pass options to the kernel at boot time.) The syntax of the
>> 491 "lp" command line option can be found in <file:drivers/char/lp.c>.
>> 492
>> 493 If you have more than 8 printers, you need to increase the LP_NO
>> 494 macro in lp.c and the PARPORT_MAX macro in parport.h.
>> 495
>> 496 config PARPORT_1284
>> 497 bool "IEEE 1284 transfer modes"
>> 498 depends on PRINTER
>> 499 help
>> 500 If you have a printer that supports status readback or device ID, or
>> 501 want to use a device that uses enhanced parallel port transfer modes
>> 502 such as EPP and ECP, say Y here to enable advanced IEEE 1284
>> 503 transfer modes. Also say Y if you want device ID information to
>> 504 appear in /proc/sys/dev/parport/*/autoprobe*. It is safe to say N.
>> 505
>> 506 config ISA
>> 507 bool
>> 508 depends on Q40 || AMIGA_PCMCIA || GG2
>> 509 default y
>> 510 help
>> 511 Find out whether you have ISA slots on your motherboard. ISA is the
>> 512 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 513 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 514 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 515 newer boards don't support it. If you have ISA, say Y, otherwise N.
>> 516
>> 517 config GENERIC_ISA_DMA
>> 518 bool
>> 519 depends on Q40 || AMIGA_PCMCIA || GG2
81 default y 520 default y
>> 521
>> 522 source "drivers/pci/Kconfig"
>> 523
>> 524 source "drivers/zorro/Kconfig"
>> 525
>> 526 if Q40
>> 527 source "drivers/pnp/Kconfig"
>> 528 endif
>> 529
>> 530 endmenu
>> 531
>> 532 source "drivers/base/Kconfig"
>> 533
>> 534 source "drivers/mtd/Kconfig"
>> 535
>> 536 source "drivers/block/Kconfig"
>> 537
>> 538 source "drivers/md/Kconfig"
>> 539
>> 540 source "drivers/input/Kconfig"
>> 541
>> 542 source "drivers/ide/Kconfig"
>> 543
>> 544 source "drivers/scsi/Kconfig"
>> 545
>> 546 source "net/Kconfig"
>> 547
>> 548
>> 549 menu "Character devices"
>> 550
>> 551 config SERIAL
>> 552 tristate "Q40 Standard/generic serial support" if Q40
>> 553 default DN_SERIAL if APOLLO
>> 554 ---help---
>> 555 This selects whether you want to include the driver for the standard
>> 556 serial ports. The standard answer is Y. People who might say N
>> 557 here are those that are setting up dedicated Ethernet WWW/FTP
>> 558 servers, or users that have one of the various bus mice instead of a
>> 559 serial mouse and don't intend to use their machine's standard serial
>> 560 port for anything. (Note that the Cyclades and Stallion multi
>> 561 serial port drivers do not need this driver built in for them to
>> 562 work.)
>> 563
>> 564 To compile this driver as a module, choose M here: the
>> 565 module will be called serial.
>> 566 [WARNING: Do not compile this driver as a module if you are using
>> 567 non-standard serial ports, since the configuration information will
>> 568 be lost when the driver is unloaded. This limitation may be lifted
>> 569 in the future.]
>> 570
>> 571 BTW1: If you have a mouseman serial mouse which is not recognized by
>> 572 the X window system, try running gpm first.
>> 573
>> 574 BTW2: If you intend to use a software modem (also called Winmodem)
>> 575 under Linux, forget it. These modems are crippled and require
>> 576 proprietary drivers which are only available under Windows.
>> 577
>> 578 Most people will say Y or M here, so that they can use serial mice,
>> 579 modems and similar devices connecting to the standard serial ports.
>> 580
>> 581 config SERIAL_EXTENDED
>> 582 bool "Extended dumb serial driver options"
>> 583 depends on SERIAL=y
>> 584 help
>> 585 If you wish to use any non-standard features of the standard "dumb"
>> 586 driver, say Y here. This includes HUB6 support, shared serial
>> 587 interrupts, special multiport support, support for more than the
>> 588 four COM 1/2/3/4 boards, etc.
>> 589
>> 590 Note that the answer to this question won't directly affect the
>> 591 kernel: saying N will just cause the configurator to skip all
>> 592 the questions about serial driver options. If unsure, say N.
>> 593
>> 594 config SERIAL_MANY_PORTS
>> 595 bool "Support more than 4 serial ports"
>> 596 depends on SERIAL_EXTENDED
82 help 597 help
83 Select if you want MMU-based virtual !! 598 Say Y here if you have dumb serial boards other than the four
84 support by paged memory management. !! 599 standard COM 1/2/3/4 ports. This may happen if you have an AST
>> 600 FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
>> 601 from <http://www.tldp.org/docs.html#howto>), or other custom
>> 602 serial port hardware which acts similar to standard serial port
>> 603 hardware. If you only use the standard COM 1/2/3/4 ports, you can
>> 604 say N here to save some memory. You can also say Y if you have an
>> 605 "intelligent" multiport card such as Cyclades, Digiboards, etc.
>> 606
>> 607 config SERIAL_SHARE_IRQ
>> 608 bool "Support for sharing serial interrupts"
>> 609 depends on SERIAL_EXTENDED
>> 610 help
>> 611 Some serial boards have hardware support which allows multiple dumb
>> 612 serial ports on the same board to share a single IRQ. To enable
>> 613 support for this in the serial driver, say Y here.
>> 614
>> 615 config SERIAL_MULTIPORT
>> 616 bool "Support special multiport boards"
>> 617 depends on SERIAL_EXTENDED
>> 618 help
>> 619 Some multiport serial ports have special ports which are used to
>> 620 signal when there are any serial ports on the board which need
>> 621 servicing. Say Y here to enable the serial driver to take advantage
>> 622 of those special I/O ports.
>> 623
>> 624 config HUB6
>> 625 bool "Support the Bell Technologies HUB6 card"
>> 626 depends on SERIAL_EXTENDED
>> 627 help
>> 628 Say Y here to enable support in the dumb serial driver to support
>> 629 the HUB6 card.
>> 630
>> 631 config VT
>> 632 bool "Virtual terminal"
>> 633 ---help---
>> 634 If you say Y here, you will get support for terminal devices with
>> 635 display and keyboard devices. These are called "virtual" because you
>> 636 can run several virtual terminals (also called virtual consoles) on
>> 637 one physical terminal. This is rather useful, for example one
>> 638 virtual terminal can collect system messages and warnings, another
>> 639 one can be used for a text-mode user session, and a third could run
>> 640 an X session, all in parallel. Switching between virtual terminals
>> 641 is done with certain key combinations, usually Alt-<function key>.
>> 642
>> 643 The setterm command ("man setterm") can be used to change the
>> 644 properties (such as colors or beeping) of a virtual terminal. The
>> 645 man page console_codes(4) ("man console_codes") contains the special
>> 646 character sequences that can be used to change those properties
>> 647 directly. The fonts used on virtual terminals can be changed with
>> 648 the setfont ("man setfont") command and the key bindings are defined
>> 649 with the loadkeys ("man loadkeys") command.
>> 650
>> 651 You need at least one virtual terminal device in order to make use
>> 652 of your keyboard and monitor. Therefore, only people configuring an
>> 653 embedded system would want to say N here in order to save some
>> 654 memory; the only way to log into such a system is then via a serial
>> 655 or network connection.
>> 656
>> 657 If unsure, say Y, or else you won't be able to do much with your new
>> 658 shiny Linux system :-)
>> 659
>> 660 config VT_CONSOLE
>> 661 bool "Support for console on virtual terminal"
>> 662 depends on VT
>> 663 ---help---
>> 664 The system console is the device which receives all kernel messages
>> 665 and warnings and which allows logins in single user mode. If you
>> 666 answer Y here, a virtual terminal (the device used to interact with
>> 667 a physical terminal) can be used as system console. This is the most
>> 668 common mode of operations, so you should say Y here unless you want
>> 669 the kernel messages be output only to a serial port (in which case
>> 670 you should say Y to "Console on serial port", below).
>> 671
>> 672 If you do say Y here, by default the currently visible virtual
>> 673 terminal (/dev/tty0) will be used as system console. You can change
>> 674 that with a kernel command line option such as "console=tty3" which
>> 675 would use the third virtual terminal as system console. (Try "man
>> 676 bootparam" or see the documentation of your boot loader (lilo or
>> 677 loadlin) about how to pass options to the kernel at boot time.)
>> 678
>> 679 If unsure, say Y.
85 680
86 config MMU_MOTOROLA !! 681 config HW_CONSOLE
87 bool 682 bool
88 select HAVE_PAGE_SIZE_4KB !! 683 depends on VT
>> 684 default y
89 685
90 config MMU_COLDFIRE !! 686 config NVRAM
91 select HAVE_PAGE_SIZE_8KB <<
92 bool 687 bool
>> 688 depends on ATARI
>> 689 default y
>> 690 ---help---
>> 691 If you say Y here and create a character special file /dev/nvram
>> 692 with major number 10 and minor number 144 using mknod ("man mknod"),
>> 693 you get read and write access to the 50 bytes of non-volatile memory
>> 694 in the real time clock (RTC), which is contained in every PC and
>> 695 most Ataris.
>> 696
>> 697 This memory is conventionally called "CMOS RAM" on PCs and "NVRAM"
>> 698 on Ataris. /dev/nvram may be used to view settings there, or to
>> 699 change them (with some utility). It could also be used to frequently
>> 700 save a few bits of very important data that may not be lost over
>> 701 power-off and for which writing to disk is too insecure. Note
>> 702 however that most NVRAM space in a PC belongs to the BIOS and you
>> 703 should NEVER idly tamper with it. See Ralf Brown's interrupt list
>> 704 for a guide to the use of CMOS bytes by your BIOS.
>> 705
>> 706 On Atari machines, /dev/nvram is always configured and does not need
>> 707 to be selected.
>> 708
>> 709 To compile this driver as a module, choose M here: the
>> 710 module will be called nvram.
>> 711
>> 712 config ATARI_MFPSER
>> 713 tristate "Atari MFP serial support"
>> 714 depends on ATARI
>> 715 ---help---
>> 716 If you like to use the MFP serial ports ("Modem1", "Serial1") under
>> 717 Linux, say Y. The driver equally supports all kinds of MFP serial
>> 718 ports and automatically detects whether Serial1 is available.
>> 719
>> 720 To compile this driver as a module, choose M here.
>> 721
>> 722 Note for Falcon users: You also have an MFP port, it's just not
>> 723 wired to the outside... But you could use the port under Linux.
>> 724
>> 725 config ATARI_SCC
>> 726 tristate "Atari SCC serial support"
>> 727 depends on ATARI
>> 728 ---help---
>> 729 If you have serial ports based on a Zilog SCC chip (Modem2, Serial2,
>> 730 LAN) and like to use them under Linux, say Y. All built-in SCC's are
>> 731 supported (TT, MegaSTE, Falcon), and also the ST-ESCC. If you have
>> 732 two connectors for channel A (Serial2 and LAN), they are visible as
>> 733 two separate devices.
>> 734
>> 735 To compile this driver as a module, choose M here.
>> 736
>> 737 config ATARI_SCC_DMA
>> 738 bool "Atari SCC serial DMA support"
>> 739 depends on ATARI_SCC
>> 740 help
>> 741 This enables DMA support for receiving data on channel A of the SCC.
>> 742 If you have a TT you may say Y here and read
>> 743 drivers/char/atari_SCC.README. All other users should say N here,
>> 744 because only the TT has SCC-DMA, even if your machine keeps claiming
>> 745 so at boot time.
>> 746
>> 747 config ATARI_MIDI
>> 748 tristate "Atari MIDI serial support"
>> 749 depends on ATARI
>> 750 help
>> 751 If you want to use your Atari's MIDI port in Linux, say Y.
>> 752
>> 753 To compile this driver as a module, choose M here.
93 754
94 config MMU_SUN3 !! 755 config ATARI_DSP56K
>> 756 tristate "Atari DSP56k support (EXPERIMENTAL)"
>> 757 depends on ATARI && EXPERIMENTAL
>> 758 help
>> 759 If you want to be able to use the DSP56001 in Falcons, say Y. This
>> 760 driver is still experimental, and if you don't know what it is, or
>> 761 if you don't have this processor, just say N.
>> 762
>> 763 To compile this driver as a module, choose M here.
>> 764
>> 765 config AMIGA_BUILTIN_SERIAL
>> 766 tristate "Amiga builtin serial support"
>> 767 depends on AMIGA
>> 768 help
>> 769 If you want to use your Amiga's built-in serial port in Linux,
>> 770 answer Y.
>> 771
>> 772 To compile this driver as a module, choose M here.
>> 773
>> 774 config WHIPPET_SERIAL
>> 775 tristate "Hisoft Whippet PCMCIA serial support"
>> 776 depends on AMIGA_PCMCIA
>> 777 help
>> 778 HiSoft has a web page at <http://www.hisoft.co.uk/>, but there
>> 779 is no listing for the Whippet in their Amiga section.
>> 780
>> 781 config MULTIFACE_III_TTY
>> 782 tristate "Multiface Card III serial support"
>> 783 depends on AMIGA
>> 784 help
>> 785 If you want to use a Multiface III card's serial port in Linux,
>> 786 answer Y.
>> 787
>> 788 To compile this driver as a module, choose M here.
>> 789
>> 790 config A2232
>> 791 tristate "Commodore A2232 serial support (EXPERIMENTAL)"
>> 792 depends on AMIGA && EXPERIMENTAL
>> 793 ---help---
>> 794 This option supports the 2232 7-port serial card shipped with the
>> 795 Amiga 2000 and other Zorro-bus machines, dating from 1989. At
>> 796 a max of 19,200 bps, the ports are served by a 6551 ACIA UART chip
>> 797 each, plus a 8520 CIA, and a master 6502 CPU and buffer as well. The
>> 798 ports were connected with 8 pin DIN connectors on the card bracket,
>> 799 for which 8 pin to DB25 adapters were supplied. The card also had
>> 800 jumpers internally to toggle various pinning configurations.
>> 801
>> 802 This driver can be built as a module; but then "generic_serial"
>> 803 will also be built as a module. This has to be loaded before
>> 804 "ser_a2232". If you want to do this, answer M here.
>> 805
>> 806 config GVPIOEXT
>> 807 tristate "GVP IO-Extender support"
>> 808 depends on PARPORT=n && ZORRO
>> 809 help
>> 810 If you want to use a GVP IO-Extender serial card in Linux, say Y.
>> 811 Otherwise, say N.
>> 812
>> 813 config GVPIOEXT_LP
>> 814 tristate "GVP IO-Extender parallel printer support"
>> 815 depends on GVPIOEXT
>> 816 help
>> 817 Say Y to enable driving a printer from the parallel port on your
>> 818 GVP IO-Extender card, N otherwise.
>> 819
>> 820 config GVPIOEXT_PLIP
>> 821 tristate "GVP IO-Extender PLIP support"
>> 822 depends on GVPIOEXT
>> 823 help
>> 824 Say Y to enable doing IP over the parallel port on your GVP
>> 825 IO-Extender card, N otherwise.
>> 826
>> 827 config MAC_SCC
>> 828 tristate "Macintosh serial support"
>> 829 depends on MAC
>> 830
>> 831 config ADB
>> 832 bool "Apple Desktop Bus (ADB) support"
>> 833 depends on MAC
>> 834 help
>> 835 Apple Desktop Bus (ADB) support is for support of devices which
>> 836 are connected to an ADB port. ADB devices tend to have 4 pins.
>> 837 If you have an Apple Macintosh prior to the iMac, or a
>> 838 "Blue and White G3", you probably want to say Y here. Otherwise
>> 839 say N.
>> 840
>> 841 config ADB_MACII
>> 842 bool "Include Mac II ADB driver"
>> 843 depends on ADB
>> 844 help
>> 845 Say Y here if want your kernel to support Macintosh systems that use
>> 846 the Mac II style ADB. This includes the II, IIx, IIcx, SE/30, IIci,
>> 847 Quadra 610, Quadra 650, Quadra 700, Quadra 800, Centris 610 and
>> 848 Centris 650.
>> 849
>> 850 config ADB_MACIISI
>> 851 bool "Include Mac IIsi ADB driver"
>> 852 depends on ADB
>> 853 help
>> 854 Say Y here if want your kernel to support Macintosh systems that use
>> 855 the Mac IIsi style ADB. This includes the IIsi, IIvi, IIvx, Classic
>> 856 II, LC, LC II, LC III, Performa 460, and the Performa 600.
>> 857
>> 858 config ADB_CUDA
>> 859 bool "Include CUDA ADB driver"
>> 860 depends on ADB
>> 861 help
>> 862 This provides support for CUDA based Power Macintosh systems. This
>> 863 includes most OldWorld PowerMacs, the first generation iMacs, the
>> 864 Blue&White G3 and the Yikes G4 (PCI Graphics). All later models
>> 865 should use CONFIG_ADB_PMU instead.
>> 866
>> 867 If unsure say Y.
>> 868
>> 869 config ADB_IOP
>> 870 bool "Include IOP (IIfx/Quadra 9x0) ADB driver"
>> 871 depends on ADB
>> 872 help
>> 873 The I/O Processor (IOP) is an Apple custom IC designed to provide
>> 874 intelligent support for I/O controllers. It is described at
>> 875 <http://www.angelfire.com/ca2/dev68k/iopdesc.html> to enable direct
>> 876 support for it, say 'Y' here.
>> 877
>> 878 config ADB_PMU68K
>> 879 bool "Include PMU (Powerbook) ADB driver"
>> 880 depends on ADB
>> 881 help
>> 882 Say Y here if want your kernel to support the m68k based Powerbooks.
>> 883 This includes the PowerBook 140, PowerBook 145, PowerBook 150,
>> 884 PowerBook 160, PowerBook 165, PowerBook 165c, PowerBook 170,
>> 885 PowerBook 180, PowerBook, 180c, PowerBook 190cs, PowerBook 520,
>> 886 PowerBook Duo 210, PowerBook Duo 230, PowerBook Duo 250,
>> 887 PowerBook Duo 270c, PowerBook Duo 280 and PowerBook Duo 280c.
>> 888
>> 889 config INPUT_ADBHID
>> 890 bool "Use input layer for ADB devices"
>> 891 depends on MAC && INPUT=y
>> 892 ---help---
>> 893 Say Y here if you want to have ADB (Apple Desktop Bus) HID devices
>> 894 such as keyboards, mice, joysticks, or graphic tablets handled by
>> 895 the input layer. If you say Y here, make sure to say Y to the
>> 896 corresponding drivers "Keyboard support" (CONFIG_INPUT_KEYBDEV),
>> 897 "Mouse Support" (CONFIG_INPUT_MOUSEDEV) and "Event interface
>> 898 support" (CONFIG_INPUT_EVDEV) as well.
>> 899
>> 900 If you say N here, you still have the option of using the old ADB
>> 901 keyboard and mouse drivers.
>> 902
>> 903 If unsure, say Y.
>> 904
>> 905 config MAC_HID
95 bool 906 bool
96 select HAVE_PAGE_SIZE_8KB !! 907 depends on INPUT_ADBHID
97 depends on MMU && !MMU_MOTOROLA && !MM !! 908 default y
98 909
99 config ARCH_SUPPORTS_KEXEC !! 910 config MAC_ADBKEYCODES
100 def_bool M68KCLASSIC && MMU !! 911 bool "Support for ADB raw keycodes"
>> 912 depends on INPUT_ADBHID
>> 913 help
>> 914 This provides support for sending raw ADB keycodes to console
>> 915 devices. This is the default up to 2.4.0, but in future this may be
>> 916 phased out in favor of generic Linux keycodes. If you say Y here,
>> 917 you can dynamically switch via the
>> 918 /proc/sys/dev/mac_hid/keyboard_sends_linux_keycodes
>> 919 sysctl and with the "keyboard_sends_linux_keycodes=" kernel
>> 920 argument.
>> 921
>> 922 If unsure, say Y here.
>> 923
>> 924 config MAC_EMUMOUSEBTN
>> 925 bool "Support for mouse button 2+3 emulation"
>> 926 depends on INPUT_ADBHID
>> 927 help
>> 928 This provides generic support for emulating the 2nd and 3rd mouse
>> 929 button with keypresses. If you say Y here, the emulation is still
>> 930 disabled by default. The emulation is controlled by these sysctl
>> 931 entries:
>> 932 /proc/sys/dev/mac_hid/mouse_button_emulation
>> 933 /proc/sys/dev/mac_hid/mouse_button2_keycode
>> 934 /proc/sys/dev/mac_hid/mouse_button3_keycode
>> 935
>> 936 config ADB_KEYBOARD
>> 937 bool "Support for ADB keyboard (old driver)"
>> 938 depends on MAC && !INPUT_ADBHID
>> 939 help
>> 940 This option allows you to use an ADB keyboard attached to your
>> 941 machine. Note that this disables any other (ie. PS/2) keyboard
>> 942 support, even if your machine is physically capable of using both at
>> 943 the same time.
>> 944
>> 945 If you use an ADB keyboard (4 pin connector), say Y here.
>> 946 If you use a PS/2 keyboard (6 pin connector), say N here.
>> 947
>> 948 config HPDCA
>> 949 tristate "HP DCA serial support"
>> 950 depends on DIO
>> 951 help
>> 952 If you want to use the internal "DCA" serial ports on an HP300
>> 953 machine, say Y here.
101 954
102 config BOOTINFO_PROC !! 955 config MVME147_SCC
103 bool "Export bootinfo in procfs" !! 956 bool "SCC support for MVME147 serial ports"
104 depends on KEXEC && M68KCLASSIC !! 957 depends on MVME147
105 help 958 help
106 Say Y to export the bootinfo used to !! 959 This is the driver for the serial ports on the Motorola MVME147
107 "bootinfo" file in procfs. This is !! 960 boards. Everyone using one of these boards should say Y here.
108 961
109 menu "Platform setup" !! 962 config SERIAL167
>> 963 bool "CD2401 support for MVME166/7 serial ports"
>> 964 depends on MVME16x && BROKEN
>> 965 help
>> 966 This is the driver for the serial ports on the Motorola MVME166,
>> 967 167, and 172 boards. Everyone using one of these boards should say
>> 968 Y here.
>> 969
>> 970 config MVME162_SCC
>> 971 bool "SCC support for MVME162 serial ports"
>> 972 depends on MVME16x
>> 973 help
>> 974 This is the driver for the serial ports on the Motorola MVME162 and
>> 975 172 boards. Everyone using one of these boards should say Y here.
110 976
111 source "arch/m68k/Kconfig.cpu" !! 977 config BVME6000_SCC
>> 978 bool "SCC support for BVME6000 serial ports"
>> 979 depends on BVME6000
>> 980 help
>> 981 This is the driver for the serial ports on the BVME4000 and BVME6000
>> 982 boards from BVM Ltd. Everyone using one of these boards should say
>> 983 Y here.
>> 984
>> 985 config DN_SERIAL
>> 986 bool "Support for DN serial port (dummy)"
>> 987 depends on APOLLO
>> 988
>> 989 config SERIAL_CONSOLE
>> 990 bool "Support for serial port console"
>> 991 depends on (AMIGA || ATARI || MAC || HP300 || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_SCC=y || ATARI_MIDI=y || MAC_SCC=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || HPDCA=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
>> 992 ---help---
>> 993 If you say Y here, it will be possible to use a serial port as the
>> 994 system console (the system console is the device which receives all
>> 995 kernel messages and warnings and which allows logins in single user
>> 996 mode). This could be useful if some terminal or printer is connected
>> 997 to that serial port.
>> 998
>> 999 Even if you say Y here, the currently visible virtual console
>> 1000 (/dev/tty0) will still be used as the system console by default, but
>> 1001 you can alter that using a kernel command line option such as
>> 1002 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 1003 your boot loader (lilo or loadlin) about how to pass options to the
>> 1004 kernel at boot time.)
>> 1005
>> 1006 If you don't have a VGA card installed and you say Y here, the
>> 1007 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 1008 system console.
>> 1009
>> 1010 If unsure, say N.
>> 1011
>> 1012 config USERIAL
>> 1013 bool "Support for user serial device modules"
>> 1014
>> 1015 config WATCHDOG
>> 1016 bool "Watchdog Timer Support"
>> 1017 ---help---
>> 1018 If you say Y here (and to one of the following options) and create a
>> 1019 character special file /dev/watchdog with major number 10 and minor
>> 1020 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
>> 1021 subsequently opening the file and then failing to write to it for
>> 1022 longer than 1 minute will result in rebooting the machine. This
>> 1023 could be useful for a networked machine that needs to come back
>> 1024 online as fast as possible after a lock-up. There's both a watchdog
>> 1025 implementation entirely in software (which can sometimes fail to
>> 1026 reboot the machine) and a driver for hardware watchdog boards, which
>> 1027 are more robust and can also keep track of the temperature inside
>> 1028 your computer. For details, read <file:Documentation/watchdog.txt>
>> 1029 in the kernel source.
>> 1030
>> 1031 The watchdog is usually used together with the watchdog daemon
>> 1032 which is available from
>> 1033 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
>> 1034 also monitor NFS connections and can reboot the machine when the process
>> 1035 table is full.
>> 1036
>> 1037 If unsure, say N.
>> 1038
>> 1039 config WATCHDOG_NOWAYOUT
>> 1040 bool "Disable watchdog shutdown on close"
>> 1041 depends on WATCHDOG
>> 1042 help
>> 1043 The default watchdog behaviour (which you get if you say N here) is
>> 1044 to stop the timer if the process managing it closes the file
>> 1045 /dev/watchdog. It's always remotely possible that this process might
>> 1046 get killed. If you say Y here, the watchdog cannot be stopped once
>> 1047 it has been started.
>> 1048
>> 1049 config SOFT_WATCHDOG
>> 1050 bool "Software watchdog"
>> 1051 depends on WATCHDOG
>> 1052 help
>> 1053 A software monitoring watchdog. This will fail to reboot your system
>> 1054 from some situations that the hardware watchdog will recover
>> 1055 from. Equally it's a lot cheaper to install.
>> 1056
>> 1057 To compile this driver as a module, choose M here: the
>> 1058 module will be called softdog.
>> 1059
>> 1060 config GEN_RTC
>> 1061 tristate "Generic /dev/rtc emulation" if !SUN3
>> 1062 default y if SUN3
>> 1063 ---help---
>> 1064 If you say Y here and create a character special file /dev/rtc with
>> 1065 major number 10 and minor number 135 using mknod ("man mknod"), you
>> 1066 will get access to the real time clock (or hardware clock) built
>> 1067 into your computer.
>> 1068
>> 1069 It reports status information via the file /proc/driver/rtc and its
>> 1070 behaviour is set by various ioctls on /dev/rtc. If you enable the
>> 1071 "extended RTC operation" below it will also provide an emulation
>> 1072 for RTC_UIE which is required by some programs and may improve
>> 1073 precision in some cases.
>> 1074
>> 1075 To compile this driver as a module, choose M here: the
>> 1076 module will be called genrtc. To load the module automatically
>> 1077 add 'alias char-major-10-135 genrtc' to your /etc/modules.conf
>> 1078
>> 1079 config GEN_RTC_X
>> 1080 bool "Extended RTC operation"
>> 1081 depends on GEN_RTC
>> 1082 help
>> 1083 Provides an emulation for RTC_UIE which is required by some programs
>> 1084 and may improve precision of the generic RTC support in some cases.
112 1085
113 source "arch/m68k/Kconfig.machine" !! 1086 config UNIX98_PTYS
>> 1087 bool "Unix98 PTY support"
>> 1088 ---help---
>> 1089 A pseudo terminal (PTY) is a software device consisting of two
>> 1090 halves: a master and a slave. The slave device behaves identical to
>> 1091 a physical terminal; the master device is used by a process to
>> 1092 read data from and write data to the slave, thereby emulating a
>> 1093 terminal. Typical programs for the master side are telnet servers
>> 1094 and xterms.
>> 1095
>> 1096 Linux has traditionally used the BSD-like names /dev/ptyxx for
>> 1097 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
>> 1098 has a number of problems. The GNU C library glibc 2.1 and later,
>> 1099 however, supports the Unix98 naming standard: in order to acquire a
>> 1100 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
>> 1101 terminal is then made available to the process and the pseudo
>> 1102 terminal slave can be accessed as /dev/pts/<number>. What was
>> 1103 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
>> 1104
>> 1105 The entries in /dev/pts/ are created on the fly by a virtual
>> 1106 file system; therefore, if you say Y here you should say Y to
>> 1107 "/dev/pts file system for Unix98 PTYs" as well.
>> 1108
>> 1109 If you want to say Y here, you need to have the C library glibc 2.1
>> 1110 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
>> 1111 Read the instructions in <file:Documentation/Changes> pertaining to
>> 1112 pseudo terminals. It's safe to say N.
>> 1113
>> 1114 config UNIX98_PTY_COUNT
>> 1115 int "Maximum number of Unix98 PTYs in use (0-2048)"
>> 1116 depends on UNIX98_PTYS
>> 1117 default "256"
>> 1118 help
>> 1119 The maximum number of Unix98 PTYs that can be used at any one time.
>> 1120 The default is 256, and should be enough for desktop systems. Server
>> 1121 machines which support incoming telnet/rlogin/ssh connections and/or
>> 1122 serve several X terminals may want to increase this: every incoming
>> 1123 connection and every xterm uses up one PTY.
114 1124
115 source "arch/m68k/Kconfig.bus" !! 1125 When not in use, each additional set of 256 PTYs occupy
>> 1126 approximately 8 KB of kernel memory on 32-bit architectures.
116 1127
117 endmenu 1128 endmenu
118 1129
119 menu "Kernel Features" !! 1130 source "sound/Kconfig"
120 1131
121 endmenu !! 1132 source "fs/Kconfig"
122 1133
123 if !MMU !! 1134 source "drivers/video/Kconfig"
124 menu "Power management options" <<
125 1135
126 config PM !! 1136 menu "Kernel hacking"
127 bool "Power Management support" <<
128 help <<
129 Support processor power management m <<
130 1137
>> 1138 config DEBUG_KERNEL
>> 1139 bool "Kernel debugging"
>> 1140
>> 1141 config MAGIC_SYSRQ
>> 1142 bool "Magic SysRq key"
>> 1143 depends on DEBUG_KERNEL
>> 1144 help
>> 1145 If you say Y here, you will have some control over the system even
>> 1146 if the system crashes for example during kernel debugging (e.g., you
>> 1147 will be able to flush the buffer cache to disk, reboot the system
>> 1148 immediately or dump some status information). This is accomplished
>> 1149 by pressing various keys while holding SysRq (Alt+PrintScreen). It
>> 1150 also works on a serial console (on PC hardware at least), if you
>> 1151 send a BREAK and then within 5 seconds a command keypress. The
>> 1152 keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
>> 1153 unless you really know what this hack does.
>> 1154
>> 1155 config DEBUG_SLAB
>> 1156 bool "Debug memory allocations"
>> 1157 depends on DEBUG_KERNEL
>> 1158
>> 1159 config DEBUG_BUGVERBOSE
>> 1160 bool "Verbose BUG() reporting"
>> 1161 depends on DEBUG_KERNEL
>> 1162
>> 1163 config DEBUG_INFO
>> 1164 bool "Compile the kernel with debug info"
>> 1165 depends on DEBUG_KERNEL
>> 1166 help
>> 1167 If you say Y here the resulting kernel image will include
>> 1168 debugging info resulting in a larger kernel image.
>> 1169 Say Y here only if you plan to use gdb to debug the kernel.
>> 1170 If you don't debug the kernel, you can say N.
>> 1171
131 endmenu 1172 endmenu
132 endif <<
133 1173
134 source "arch/m68k/Kconfig.devices" !! 1174 source "security/Kconfig"
>> 1175
>> 1176 source "crypto/Kconfig"
>> 1177
>> 1178 source "lib/Kconfig"
>> 1179
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