4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "Lemote Fulong mini-PC"
20 select ARCH_SPARSEMEM_ENABLE
21 select SYS_HAS_CPU_LOONGSON2
22 select DMA_NONCOHERENT
25 select HAVE_STD_PC_SERIAL_PORT
30 select SYS_SUPPORTS_32BIT_KERNEL
31 select SYS_SUPPORTS_64BIT_KERNEL
32 select SYS_SUPPORTS_LITTLE_ENDIAN
33 select SYS_SUPPORTS_HIGHMEM
34 select SYS_HAS_EARLY_PRINTK
35 select GENERIC_HARDIRQS_NO__DO_IRQ
38 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
42 bool "Alchemy processor based machines"
45 bool "Basler eXcite smart camera"
52 select SYS_HAS_CPU_RM9000
53 select SYS_SUPPORTS_32BIT_KERNEL
54 select SYS_SUPPORTS_64BIT_KERNEL
55 select SYS_SUPPORTS_BIG_ENDIAN
56 select SYS_SUPPORTS_KGDB
58 The eXcite is a smart camera platform manufactured by
59 Basler Vision Technologies AG.
61 config BASLER_EXCITE_PROTOTYPE
62 bool "Support for pre-release units"
63 depends on BASLER_EXCITE
66 Pre-series (prototype) units are different from later ones in
67 some ways. Select this option if you have one of these. Please
68 note that a kernel built with this option selected will not be
69 able to run on normal units.
73 select DMA_NONCOHERENT
77 select PCI_GT64XXX_PCI0
78 select SYS_HAS_CPU_NEVADA
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
82 select SYS_SUPPORTS_LITTLE_ENDIAN
83 select GENERIC_HARDIRQS_NO__DO_IRQ
85 config MACH_DECSTATION
88 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_R3000
92 select SYS_HAS_CPU_R4X00
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SYS_SUPPORTS_128HZ
97 select SYS_SUPPORTS_256HZ
98 select SYS_SUPPORTS_1024HZ
100 This enables support for DEC's MIPS based workstations. For details
101 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
102 DECstation porting pages on <http://decstation.unix-ag.org/>.
104 If you have one of the following DECstation Models you definitely
105 want to choose R4xx0 for the CPU Type:
112 otherwise choose R3000.
115 bool "Jazz family of machines"
118 select ARCH_MAY_HAVE_PC_FDC
119 select GENERIC_ISA_DMA
123 select SYS_HAS_CPU_R4X00
124 select SYS_SUPPORTS_32BIT_KERNEL
125 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
126 select SYS_SUPPORTS_100HZ
127 select GENERIC_HARDIRQS_NO__DO_IRQ
129 This a family of machines based on the MIPS R4030 chipset which was
130 used by several vendors to build RISC/os and Windows NT workstations.
131 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
132 Olivetti M700-10 workstations.
135 bool "LASAT Networks platforms"
136 select DMA_NONCOHERENT
137 select SYS_HAS_EARLY_PRINTK
139 select PCI_GT64XXX_PCI0
141 select R5000_CPU_SCACHE
142 select SYS_HAS_CPU_R5000
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
145 select SYS_SUPPORTS_LITTLE_ENDIAN
146 select GENERIC_HARDIRQS_NO__DO_IRQ
149 bool "MIPS Atlas board"
151 select DMA_NONCOHERENT
152 select SYS_HAS_EARLY_PRINTK
155 select MIPS_BOARDS_GEN
157 select PCI_GT64XXX_PCI0
159 select RM7000_CPU_SCACHE
161 select SYS_HAS_CPU_MIPS32_R1
162 select SYS_HAS_CPU_MIPS32_R2
163 select SYS_HAS_CPU_MIPS64_R1
164 select SYS_HAS_CPU_NEVADA
165 select SYS_HAS_CPU_RM7000
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL
168 select SYS_SUPPORTS_BIG_ENDIAN
169 select SYS_SUPPORTS_LITTLE_ENDIAN
170 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
171 select SYS_SUPPORTS_SMARTMIPS
172 select GENERIC_HARDIRQS_NO__DO_IRQ
174 This enables support for the MIPS Technologies Atlas evaluation
178 bool "MIPS Malta board"
179 select ARCH_MAY_HAVE_PC_FDC
181 select DMA_NONCOHERENT
182 select GENERIC_ISA_DMA
186 select MIPS_BOARDS_GEN
188 select MIPS_CPU_SCACHE
189 select PCI_GT64XXX_PCI0
192 select SYS_HAS_CPU_MIPS32_R1
193 select SYS_HAS_CPU_MIPS32_R2
194 select SYS_HAS_CPU_MIPS64_R1
195 select SYS_HAS_CPU_NEVADA
196 select SYS_HAS_CPU_RM7000
197 select SYS_HAS_EARLY_PRINTK
198 select SYS_SUPPORTS_32BIT_KERNEL
199 select SYS_SUPPORTS_64BIT_KERNEL
200 select SYS_SUPPORTS_BIG_ENDIAN
201 select SYS_SUPPORTS_LITTLE_ENDIAN
202 select SYS_SUPPORTS_MULTITHREADING
203 select SYS_SUPPORTS_SMARTMIPS
205 This enables support for the MIPS Technologies Malta evaluation
209 bool "MIPS SEAD board (EXPERIMENTAL)"
210 depends on EXPERIMENTAL
212 select DMA_NONCOHERENT
213 select SYS_HAS_EARLY_PRINTK
214 select MIPS_BOARDS_GEN
215 select SYS_HAS_CPU_MIPS32_R1
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_HAS_CPU_MIPS64_R1
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_LITTLE_ENDIAN
222 select SYS_SUPPORTS_SMARTMIPS
224 This enables support for the MIPS Technologies SEAD evaluation
228 bool "Wind River PPMC board"
231 select DMA_NONCOHERENT
233 select PCI_GT64XXX_PCI0
235 select SYS_HAS_CPU_MIPS32_R1
236 select SYS_HAS_CPU_MIPS32_R2
237 select SYS_HAS_CPU_MIPS64_R1
238 select SYS_HAS_CPU_NEVADA
239 select SYS_HAS_CPU_RM7000
240 select SYS_SUPPORTS_32BIT_KERNEL
241 select SYS_SUPPORTS_64BIT_KERNEL
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_LITTLE_ENDIAN
245 This enables support for the Wind River MIPS32 4KC PPMC evaluation
246 board, which is based on GT64120 bridge chip.
249 bool 'MIPS simulator (MIPSsim)'
250 select DMA_NONCOHERENT
251 select SYS_HAS_EARLY_PRINTK
253 select SYS_HAS_CPU_MIPS32_R1
254 select SYS_HAS_CPU_MIPS32_R2
255 select SYS_HAS_EARLY_PRINTK
256 select SYS_SUPPORTS_32BIT_KERNEL
257 select SYS_SUPPORTS_BIG_ENDIAN
258 select SYS_SUPPORTS_MULTITHREADING
259 select SYS_SUPPORTS_LITTLE_ENDIAN
261 This option enables support for MIPS Technologies MIPSsim software
264 config MOMENCO_OCELOT
265 bool "Momentum Ocelot board"
266 select DMA_NONCOHERENT
270 select PCI_GT64XXX_PCI0
271 select RM7000_CPU_SCACHE
273 select SYS_HAS_CPU_RM7000
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_64BIT_KERNEL
276 select SYS_SUPPORTS_BIG_ENDIAN
277 select SYS_SUPPORTS_KGDB
279 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
280 Momentum Computer <http://www.momenco.com/>.
282 config MOMENCO_OCELOT_3
283 bool "Momentum Ocelot-3 board"
285 select DMA_NONCOHERENT
291 select RM7000_CPU_SCACHE
293 select SYS_HAS_CPU_RM9000
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
298 The Ocelot-3 is based off Discovery III System Controller and
299 PMC-Sierra Rm79000 core.
302 bool "Philips PNX8550 based JBS board"
304 select SYS_SUPPORTS_LITTLE_ENDIAN
306 config PNX8550_STB810
307 bool "Philips PNX8550 based STB810 board"
309 select SYS_SUPPORTS_LITTLE_ENDIAN
312 bool "NEC DDB Vrc-5477"
313 select DDB5XXX_COMMON
314 select DMA_NONCOHERENT
318 select SYS_HAS_CPU_R5432
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
321 select SYS_SUPPORTS_KGDB
322 select SYS_SUPPORTS_KGDB
323 select SYS_SUPPORTS_LITTLE_ENDIAN
325 This enables support for the R5432-based NEC DDB Vrc-5477,
326 or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
328 Features : kernel debugging, serial terminal, NFS root fs, on-board
329 ether port USB, AC97, PCI, etc.
332 bool "NEC VR4100 series based machines"
333 select SYS_HAS_CPU_VR41XX
334 select GENERIC_HARDIRQS_NO__DO_IRQ
337 bool "PMC-Sierra Yosemite eval board"
344 select SYS_HAS_CPU_RM9000
345 select SYS_HAS_EARLY_PRINTK
346 select SYS_SUPPORTS_32BIT_KERNEL
347 select SYS_SUPPORTS_64BIT_KERNEL
348 select SYS_SUPPORTS_BIG_ENDIAN
349 select SYS_SUPPORTS_HIGHMEM
350 select SYS_SUPPORTS_KGDB
351 select SYS_SUPPORTS_SMP
353 Yosemite is an evaluation board for the RM9000x2 processor
354 manufactured by PMC-Sierra.
359 select GENERIC_ISA_DMA
360 select HAVE_STD_PC_SERIAL_PORT
365 select SYS_HAS_CPU_MIPS32_R1
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_BIG_ENDIAN
368 select SYS_SUPPORTS_LITTLE_ENDIAN
369 select ARCH_SPARSEMEM_ENABLE
370 select GENERIC_HARDIRQS_NO__DO_IRQ
371 select NR_CPUS_DEFAULT_1
372 select SYS_SUPPORTS_SMP
374 Qemu is a software emulator which among other architectures also
375 can simulate a MIPS32 4Kc system. This patch adds support for the
376 system architecture that currently is being simulated by Qemu. It
377 will eventually be removed again when Qemu has the capability to
378 simulate actual MIPS hardware platforms. More information on Qemu
379 can be found at http://www.linux-mips.org/wiki/Qemu.
382 bool "NEC EMMA2RH Mark-eins"
383 select DMA_NONCOHERENT
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_BIG_ENDIAN
389 select SYS_SUPPORTS_LITTLE_ENDIAN
390 select SYS_HAS_CPU_R5000
392 This enables support for the R5432-based NEC Mark-eins
393 boards with R5500 CPU.
396 bool "SGI IP22 (Indy/Indigo2)"
400 select DMA_NONCOHERENT
402 select IP22_CPU_SCACHE
404 select GENERIC_ISA_DMA_SUPPORT_BROKEN
406 select SYS_HAS_CPU_R4X00
407 select SYS_HAS_CPU_R5000
408 select SYS_HAS_EARLY_PRINTK
409 select SYS_SUPPORTS_32BIT_KERNEL
410 select SYS_SUPPORTS_64BIT_KERNEL
411 select SYS_SUPPORTS_BIG_ENDIAN
413 This are the SGI Indy, Challenge S and Indigo2, as well as certain
414 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
415 that runs on these, say Y here.
418 bool "SGI IP27 (Origin200/2000)"
423 select SYS_HAS_EARLY_PRINTK
425 select NR_CPUS_DEFAULT_64
427 select SYS_HAS_CPU_R10000
428 select SYS_SUPPORTS_64BIT_KERNEL
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_KGDB
431 select SYS_SUPPORTS_NUMA
432 select SYS_SUPPORTS_SMP
433 select GENERIC_HARDIRQS_NO__DO_IRQ
435 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
436 workstations. To compile a Linux kernel that runs on these, say Y
444 select DMA_NONCOHERENT
446 select R5000_CPU_SCACHE
447 select RM7000_CPU_SCACHE
448 select SYS_HAS_CPU_R5000
449 select SYS_HAS_CPU_R10000 if BROKEN
450 select SYS_HAS_CPU_RM7000
451 select SYS_HAS_CPU_NEVADA
452 select SYS_SUPPORTS_64BIT_KERNEL
453 select SYS_SUPPORTS_BIG_ENDIAN
455 If you want this kernel to run on SGI O2 workstation, say Y here.
458 bool "Sibyte BCM91480B-BigSur"
461 select NR_CPUS_DEFAULT_4
463 select SIBYTE_BCM1x80
465 select SYS_HAS_CPU_SB1
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_LITTLE_ENDIAN
470 bool "Sibyte BCM91250A-SWARM"
473 select NR_CPUS_DEFAULT_2
476 select SYS_HAS_CPU_SB1
477 select SYS_SUPPORTS_BIG_ENDIAN
478 select SYS_SUPPORTS_HIGHMEM
479 select SYS_SUPPORTS_KGDB
480 select SYS_SUPPORTS_LITTLE_ENDIAN
482 config SIBYTE_SENTOSA
483 bool "Sibyte BCM91250E-Sentosa"
484 depends on EXPERIMENTAL
487 select NR_CPUS_DEFAULT_2
490 select SYS_HAS_CPU_SB1
491 select SYS_SUPPORTS_BIG_ENDIAN
492 select SYS_SUPPORTS_LITTLE_ENDIAN
495 bool "Sibyte BCM91125E-Rhone"
496 depends on EXPERIMENTAL
499 select SIBYTE_BCM1125H
501 select SYS_HAS_CPU_SB1
502 select SYS_SUPPORTS_BIG_ENDIAN
503 select SYS_SUPPORTS_LITTLE_ENDIAN
506 bool "Sibyte BCM91120x-Carmel"
507 depends on EXPERIMENTAL
510 select SIBYTE_BCM1120
512 select SYS_HAS_CPU_SB1
513 select SYS_SUPPORTS_BIG_ENDIAN
514 select SYS_SUPPORTS_LITTLE_ENDIAN
516 config SIBYTE_PTSWARM
517 bool "Sibyte BCM91250PT-PTSWARM"
518 depends on EXPERIMENTAL
521 select NR_CPUS_DEFAULT_2
524 select SYS_HAS_CPU_SB1
525 select SYS_SUPPORTS_BIG_ENDIAN
526 select SYS_SUPPORTS_HIGHMEM
527 select SYS_SUPPORTS_LITTLE_ENDIAN
529 config SIBYTE_LITTLESUR
530 bool "Sibyte BCM91250C2-LittleSur"
531 depends on EXPERIMENTAL
534 select NR_CPUS_DEFAULT_2
537 select SYS_HAS_CPU_SB1
538 select SYS_SUPPORTS_BIG_ENDIAN
539 select SYS_SUPPORTS_HIGHMEM
540 select SYS_SUPPORTS_LITTLE_ENDIAN
543 bool "Sibyte BCM91120C-CRhine"
544 depends on EXPERIMENTAL
547 select SIBYTE_BCM1120
549 select SYS_HAS_CPU_SB1
550 select SYS_SUPPORTS_BIG_ENDIAN
551 select SYS_SUPPORTS_LITTLE_ENDIAN
554 bool "Sibyte BCM91125C-CRhone"
555 depends on EXPERIMENTAL
558 select SIBYTE_BCM1125
560 select SYS_HAS_CPU_SB1
561 select SYS_SUPPORTS_BIG_ENDIAN
562 select SYS_SUPPORTS_HIGHMEM
563 select SYS_SUPPORTS_LITTLE_ENDIAN
566 bool "SNI RM200/300/400"
567 select ARC if CPU_LITTLE_ENDIAN
568 select ARC32 if CPU_LITTLE_ENDIAN
569 select ARCH_MAY_HAVE_PC_FDC
571 select DMA_NONCOHERENT
572 select GENERIC_ISA_DMA
579 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
580 select SYS_HAS_CPU_R4X00
581 select SYS_HAS_CPU_R5000
582 select SYS_HAS_CPU_R10000
583 select R5000_CPU_SCACHE
584 select SYS_HAS_EARLY_PRINTK
585 select SYS_SUPPORTS_32BIT_KERNEL
586 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
587 select SYS_SUPPORTS_BIG_ENDIAN
588 select SYS_SUPPORTS_HIGHMEM
589 select SYS_SUPPORTS_LITTLE_ENDIAN
591 The SNI RM200/300/400 are MIPS-based machines manufactured by
592 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
593 Technology and now in turn merged with Fujitsu. Say Y here to
594 support this machine type.
596 config TOSHIBA_JMR3927
597 bool "Toshiba JMR-TX3927 board"
598 select DMA_NONCOHERENT
602 select SYS_HAS_CPU_TX39XX
603 select SYS_SUPPORTS_32BIT_KERNEL
604 select SYS_SUPPORTS_LITTLE_ENDIAN
605 select SYS_SUPPORTS_BIG_ENDIAN
606 select GENERIC_HARDIRQS_NO__DO_IRQ
608 config TOSHIBA_RBTX4927
609 bool "Toshiba TBTX49[23]7 board"
610 select DMA_NONCOHERENT
611 select HAS_TXX9_SERIAL
615 select SYS_HAS_CPU_TX49XX
616 select SYS_SUPPORTS_32BIT_KERNEL
617 select SYS_SUPPORTS_64BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select SYS_SUPPORTS_KGDB
621 select GENERIC_HARDIRQS_NO__DO_IRQ
623 This Toshiba board is based on the TX4927 processor. Say Y here to
624 support this machine type
626 config TOSHIBA_RBTX4938
627 bool "Toshiba RBTX4938 board"
628 select HAVE_STD_PC_SERIAL_PORT
629 select DMA_NONCOHERENT
630 select GENERIC_ISA_DMA
631 select HAS_TXX9_SERIAL
635 select SYS_HAS_CPU_TX49XX
636 select SYS_SUPPORTS_32BIT_KERNEL
637 select SYS_SUPPORTS_LITTLE_ENDIAN
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_KGDB
640 select GENERIC_HARDIRQS_NO__DO_IRQ
642 This Toshiba board is based on the TX4938 processor. Say Y here to
643 support this machine type
647 source "arch/mips/au1000/Kconfig"
648 source "arch/mips/ddb5xxx/Kconfig"
649 source "arch/mips/jazz/Kconfig"
650 source "arch/mips/lasat/Kconfig"
651 source "arch/mips/pmc-sierra/Kconfig"
652 source "arch/mips/sgi-ip27/Kconfig"
653 source "arch/mips/sibyte/Kconfig"
654 source "arch/mips/tx4927/Kconfig"
655 source "arch/mips/tx4938/Kconfig"
656 source "arch/mips/vr41xx/Kconfig"
657 source "arch/mips/philips/pnx8550/common/Kconfig"
661 config RWSEM_GENERIC_SPINLOCK
665 config RWSEM_XCHGADD_ALGORITHM
668 config ARCH_HAS_ILOG2_U32
672 config ARCH_HAS_ILOG2_U64
676 config GENERIC_FIND_NEXT_BIT
680 config GENERIC_HWEIGHT
684 config GENERIC_CALIBRATE_DELAY
692 config SCHED_NO_NO_OMIT_FRAME_POINTER
696 config GENERIC_HARDIRQS_NO__DO_IRQ
701 # Select some configuration options automatically based on user selections.
706 config ARCH_MAY_HAVE_PC_FDC
717 select DMA_NEED_PCI_MAP_STATE
719 config DMA_NONCOHERENT
721 select DMA_NEED_PCI_MAP_STATE
723 config DMA_NEED_PCI_MAP_STATE
727 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
728 depends on SYS_HAS_EARLY_PRINTK
731 This option enables special console drivers which allow the kernel
732 to print messages very early in the bootup process.
734 This is useful for kernel debugging when your machine crashes very
735 early before the console code is initialized. For normal operation,
736 it is not recommended because it looks ugly on some machines and
737 doesn't cooperate with an X server. You should normally say N here,
738 unless you want to debug such a crash.
740 config SYS_HAS_EARLY_PRINTK
743 config GENERIC_ISA_DMA
759 config MIPS_DISABLE_OBSOLETE_IDE
765 config GENERIC_ISA_DMA_SUPPORT_BROKEN
773 # Endianess selection. Sufficiently obscure so many users don't know what to
774 # answer,so we try hard to limit the available choices. Also the use of a
775 # choice statement should be more obvious to the user.
778 prompt "Endianess selection"
780 Some MIPS machines can be configured for either little or big endian
781 byte order. These modes require different kernels and a different
782 Linux distribution. In general there is one preferred byteorder for a
783 particular system but some systems are just as commonly used in the
784 one or the other endianness.
786 config CPU_BIG_ENDIAN
788 depends on SYS_SUPPORTS_BIG_ENDIAN
790 config CPU_LITTLE_ENDIAN
792 depends on SYS_SUPPORTS_LITTLE_ENDIAN
797 config SYS_SUPPORTS_APM_EMULATION
800 config SYS_SUPPORTS_BIG_ENDIAN
803 config SYS_SUPPORTS_LITTLE_ENDIAN
818 config DDB5XXX_COMMON
820 select SYS_SUPPORTS_KGDB
822 config MIPS_BOARDS_GEN
825 config PCI_GT64XXX_PCI0
830 select HAS_TXX9_SERIAL
845 select DMA_NONCOHERENT
847 select SYS_HAS_CPU_MIPS32_R1
848 select SYS_HAS_EARLY_PRINTK
849 select SYS_SUPPORTS_32BIT_KERNEL
850 select GENERIC_HARDIRQS_NO__DO_IRQ
851 select SYS_SUPPORTS_KGDB
866 # Unfortunately not all GT64120 systems run the chip at the same clock.
867 # As the user for the clock rate and try to minimize the available options.
870 prompt "Galileo Chip Clock"
871 depends on MOMENCO_OCELOT
872 default SYSCLK_100 if MOMENCO_OCELOT
875 bool "100" if MOMENCO_OCELOT
885 config MIPS_L1_CACHE_SHIFT
887 default "4" if MACH_DECSTATION || SNI_RM
888 default "7" if SGI_IP27
891 config HAVE_STD_PC_SERIAL_PORT
895 bool "ARC console support"
896 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
900 depends on MACH_JAZZ || SNI_RM || SGI_IP32
905 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
922 depends on SYS_HAS_CPU_LOONGSON2
923 select CPU_SUPPORTS_32BIT_KERNEL
924 select CPU_SUPPORTS_64BIT_KERNEL
925 select CPU_SUPPORTS_HIGHMEM
927 The Loongson 2E processor implements the MIPS III instruction set
928 with many extensions.
931 bool "MIPS32 Release 1"
932 depends on SYS_HAS_CPU_MIPS32_R1
934 select CPU_HAS_PREFETCH
935 select CPU_SUPPORTS_32BIT_KERNEL
936 select CPU_SUPPORTS_HIGHMEM
938 Choose this option to build a kernel for release 1 or later of the
939 MIPS32 architecture. Most modern embedded systems with a 32-bit
940 MIPS processor are based on a MIPS32 processor. If you know the
941 specific type of processor in your system, choose those that one
942 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
943 Release 2 of the MIPS32 architecture is available since several
944 years so chances are you even have a MIPS32 Release 2 processor
945 in which case you should choose CPU_MIPS32_R2 instead for better
949 bool "MIPS32 Release 2"
950 depends on SYS_HAS_CPU_MIPS32_R2
952 select CPU_HAS_PREFETCH
953 select CPU_SUPPORTS_32BIT_KERNEL
954 select CPU_SUPPORTS_HIGHMEM
956 Choose this option to build a kernel for release 2 or later of the
957 MIPS32 architecture. Most modern embedded systems with a 32-bit
958 MIPS processor are based on a MIPS32 processor. If you know the
959 specific type of processor in your system, choose those that one
960 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
963 bool "MIPS64 Release 1"
964 depends on SYS_HAS_CPU_MIPS64_R1
966 select CPU_HAS_PREFETCH
967 select CPU_SUPPORTS_32BIT_KERNEL
968 select CPU_SUPPORTS_64BIT_KERNEL
969 select CPU_SUPPORTS_HIGHMEM
971 Choose this option to build a kernel for release 1 or later of the
972 MIPS64 architecture. Many modern embedded systems with a 64-bit
973 MIPS processor are based on a MIPS64 processor. If you know the
974 specific type of processor in your system, choose those that one
975 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
976 Release 2 of the MIPS64 architecture is available since several
977 years so chances are you even have a MIPS64 Release 2 processor
978 in which case you should choose CPU_MIPS64_R2 instead for better
982 bool "MIPS64 Release 2"
983 depends on SYS_HAS_CPU_MIPS64_R2
985 select CPU_HAS_PREFETCH
986 select CPU_SUPPORTS_32BIT_KERNEL
987 select CPU_SUPPORTS_64BIT_KERNEL
988 select CPU_SUPPORTS_HIGHMEM
990 Choose this option to build a kernel for release 2 or later of the
991 MIPS64 architecture. Many modern embedded systems with a 64-bit
992 MIPS processor are based on a MIPS64 processor. If you know the
993 specific type of processor in your system, choose those that one
994 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
998 depends on SYS_HAS_CPU_R3000
1000 select CPU_SUPPORTS_32BIT_KERNEL
1001 select CPU_SUPPORTS_HIGHMEM
1003 Please make sure to pick the right CPU type. Linux/MIPS is not
1004 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1005 *not* work on R4000 machines and vice versa. However, since most
1006 of the supported machines have an R4000 (or similar) CPU, R4x00
1007 might be a safe bet. If the resulting kernel does not work,
1008 try to recompile with R3000.
1012 depends on SYS_HAS_CPU_TX39XX
1013 select CPU_SUPPORTS_32BIT_KERNEL
1017 depends on SYS_HAS_CPU_VR41XX
1018 select CPU_SUPPORTS_32BIT_KERNEL
1019 select CPU_SUPPORTS_64BIT_KERNEL
1021 The options selects support for the NEC VR4100 series of processors.
1022 Only choose this option if you have one of these processors as a
1023 kernel built with this option will not run on any other type of
1024 processor or vice versa.
1028 depends on SYS_HAS_CPU_R4300
1030 select CPU_SUPPORTS_32BIT_KERNEL
1031 select CPU_SUPPORTS_64BIT_KERNEL
1033 MIPS Technologies R4300-series processors.
1037 depends on SYS_HAS_CPU_R4X00
1039 select CPU_SUPPORTS_32BIT_KERNEL
1040 select CPU_SUPPORTS_64BIT_KERNEL
1042 MIPS Technologies R4000-series processors other than 4300, including
1043 the R4000, R4400, R4600, and 4700.
1047 depends on SYS_HAS_CPU_TX49XX
1049 select CPU_HAS_PREFETCH
1050 select CPU_SUPPORTS_32BIT_KERNEL
1051 select CPU_SUPPORTS_64BIT_KERNEL
1055 depends on SYS_HAS_CPU_R5000
1057 select CPU_SUPPORTS_32BIT_KERNEL
1058 select CPU_SUPPORTS_64BIT_KERNEL
1060 MIPS Technologies R5000-series processors other than the Nevada.
1064 depends on SYS_HAS_CPU_R5432
1066 select CPU_SUPPORTS_32BIT_KERNEL
1067 select CPU_SUPPORTS_64BIT_KERNEL
1071 depends on EXPERIMENTAL
1073 depends on SYS_HAS_CPU_R6000
1074 select CPU_SUPPORTS_32BIT_KERNEL
1076 MIPS Technologies R6000 and R6000A series processors. Note these
1077 processors are extremely rare and the support for them is incomplete.
1081 depends on SYS_HAS_CPU_NEVADA
1083 select CPU_SUPPORTS_32BIT_KERNEL
1084 select CPU_SUPPORTS_64BIT_KERNEL
1086 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1090 depends on EXPERIMENTAL
1091 depends on SYS_HAS_CPU_R8000
1093 select CPU_HAS_PREFETCH
1094 select CPU_SUPPORTS_64BIT_KERNEL
1096 MIPS Technologies R8000 processors. Note these processors are
1097 uncommon and the support for them is incomplete.
1101 depends on SYS_HAS_CPU_R10000
1103 select CPU_HAS_PREFETCH
1104 select CPU_SUPPORTS_32BIT_KERNEL
1105 select CPU_SUPPORTS_64BIT_KERNEL
1106 select CPU_SUPPORTS_HIGHMEM
1108 MIPS Technologies R10000-series processors.
1112 depends on SYS_HAS_CPU_RM7000
1114 select CPU_HAS_PREFETCH
1115 select CPU_SUPPORTS_32BIT_KERNEL
1116 select CPU_SUPPORTS_64BIT_KERNEL
1117 select CPU_SUPPORTS_HIGHMEM
1121 depends on SYS_HAS_CPU_RM9000
1123 select CPU_HAS_PREFETCH
1124 select CPU_SUPPORTS_32BIT_KERNEL
1125 select CPU_SUPPORTS_64BIT_KERNEL
1126 select CPU_SUPPORTS_HIGHMEM
1127 select WEAK_ORDERING
1131 depends on SYS_HAS_CPU_SB1
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_64BIT_KERNEL
1135 select CPU_SUPPORTS_HIGHMEM
1136 select WEAK_ORDERING
1140 config SYS_HAS_CPU_LOONGSON2
1143 config SYS_HAS_CPU_MIPS32_R1
1146 config SYS_HAS_CPU_MIPS32_R2
1149 config SYS_HAS_CPU_MIPS64_R1
1152 config SYS_HAS_CPU_MIPS64_R2
1155 config SYS_HAS_CPU_R3000
1158 config SYS_HAS_CPU_TX39XX
1161 config SYS_HAS_CPU_VR41XX
1164 config SYS_HAS_CPU_R4300
1167 config SYS_HAS_CPU_R4X00
1170 config SYS_HAS_CPU_TX49XX
1173 config SYS_HAS_CPU_R5000
1176 config SYS_HAS_CPU_R5432
1179 config SYS_HAS_CPU_R6000
1182 config SYS_HAS_CPU_NEVADA
1185 config SYS_HAS_CPU_R8000
1188 config SYS_HAS_CPU_R10000
1191 config SYS_HAS_CPU_RM7000
1194 config SYS_HAS_CPU_RM9000
1197 config SYS_HAS_CPU_SB1
1200 config WEAK_ORDERING
1205 # These two indicate any level of the MIPS32 and MIPS64 architecture
1209 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1213 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1216 # These two indicate the revision of the architecture, either Release 1 or Release 2
1220 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1224 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1226 config SYS_SUPPORTS_32BIT_KERNEL
1228 config SYS_SUPPORTS_64BIT_KERNEL
1230 config CPU_SUPPORTS_32BIT_KERNEL
1232 config CPU_SUPPORTS_64BIT_KERNEL
1239 prompt "Kernel code model"
1241 You should only select this option if you have a workload that
1242 actually benefits from 64-bit processing or if your machine has
1243 large memory. You will only be presented a single option in this
1244 menu if your system does not support both 32-bit and 64-bit kernels.
1247 bool "32-bit kernel"
1248 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1251 Select this option if you want to build a 32-bit kernel.
1253 bool "64-bit kernel"
1254 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1256 Select this option if you want to build a 64-bit kernel.
1261 prompt "Kernel page size"
1262 default PAGE_SIZE_4KB
1264 config PAGE_SIZE_4KB
1267 This option select the standard 4kB Linux page size. On some
1268 R3000-family processors this is the only available page size. Using
1269 4kB page size will minimize memory consumption and is therefore
1270 recommended for low memory systems.
1272 config PAGE_SIZE_8KB
1274 depends on EXPERIMENTAL && CPU_R8000
1276 Using 8kB page size will result in higher performance kernel at
1277 the price of higher memory consumption. This option is available
1278 only on the R8000 processor. Not that at the time of this writing
1279 this option is still high experimental; there are also issues with
1280 compatibility of user applications.
1282 config PAGE_SIZE_16KB
1284 depends on !CPU_R3000 && !CPU_TX39XX
1286 Using 16kB page size will result in higher performance kernel at
1287 the price of higher memory consumption. This option is available on
1288 all non-R3000 family processors. Note that you will need a suitable
1289 Linux distribution to support this.
1291 config PAGE_SIZE_64KB
1293 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1295 Using 64kB page size will result in higher performance kernel at
1296 the price of higher memory consumption. This option is available on
1297 all non-R3000 family processor. Not that at the time of this
1298 writing this option is still high experimental.
1305 config IP22_CPU_SCACHE
1310 # Support for a MIPS32 / MIPS64 style S-caches
1312 config MIPS_CPU_SCACHE
1316 config R5000_CPU_SCACHE
1320 config RM7000_CPU_SCACHE
1324 config SIBYTE_DMA_PAGEOPS
1325 bool "Use DMA to clear/copy pages"
1328 Instead of using the CPU to zero and copy pages, use a Data Mover
1329 channel. These DMA channels are otherwise unused by the standard
1330 SiByte Linux port. Seems to give a small performance benefit.
1332 config CPU_HAS_PREFETCH
1336 prompt "MIPS MT options"
1338 config MIPS_MT_DISABLED
1339 bool "Disable multithreading support."
1341 Use this option if your workload can't take advantage of
1342 MIPS hardware multithreading support. On systems that don't have
1343 the option of an MT-enabled processor this option will be the only
1344 option in this menu.
1347 bool "Use 1 TC on each available VPE for SMP"
1348 depends on SYS_SUPPORTS_MULTITHREADING
1349 select CPU_MIPSR2_IRQ_VI
1350 select CPU_MIPSR2_IRQ_EI
1351 select CPU_MIPSR2_SRS
1353 select NR_CPUS_DEFAULT_2
1355 select SYS_SUPPORTS_SMP
1357 This is a kernel model which is also known a VSMP or lately
1358 has been marketesed into SMVP.
1361 bool "SMTC: Use all TCs on all VPEs for SMP"
1362 depends on CPU_MIPS32_R2
1363 #depends on CPU_MIPS64_R2 # once there is hardware ...
1364 depends on SYS_SUPPORTS_MULTITHREADING
1365 select CPU_MIPSR2_IRQ_VI
1366 select CPU_MIPSR2_IRQ_EI
1367 select CPU_MIPSR2_SRS
1369 select NR_CPUS_DEFAULT_8
1371 select SYS_SUPPORTS_SMP
1373 This is a kernel model which is known a SMTC or lately has been
1374 marketesed into SMVP.
1376 config MIPS_VPE_LOADER
1377 bool "VPE loader support."
1378 depends on SYS_SUPPORTS_MULTITHREADING
1379 select CPU_MIPSR2_IRQ_VI
1380 select CPU_MIPSR2_IRQ_EI
1381 select CPU_MIPSR2_SRS
1384 Includes a loader for loading an elf relocatable object
1385 onto another VPE and running it.
1392 config SYS_SUPPORTS_MULTITHREADING
1395 config MIPS_MT_FPAFF
1396 bool "Dynamic FPU affinity for FP-intensive threads"
1400 config MIPS_MT_SMTC_INSTANT_REPLAY
1401 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1402 depends on MIPS_MT_SMTC && !PREEMPT
1405 SMTC pseudo-interrupts between TCs are deferred and queued
1406 if the target TC is interrupt-inhibited (IXMT). In the first
1407 SMTC prototypes, these queued IPIs were serviced on return
1408 to user mode, or on entry into the kernel idle loop. The
1409 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1410 processing, which adds runtime overhead (hence the option to turn
1411 it off), but ensures that IPIs are handled promptly even under
1412 heavy I/O interrupt load.
1414 config MIPS_VPE_LOADER_TOM
1415 bool "Load VPE program into memory hidden from linux"
1416 depends on MIPS_VPE_LOADER
1419 The loader can use memory that is present but has been hidden from
1420 Linux using the kernel command line option "mem=xxMB". It's up to
1421 you to ensure the amount you put in the option and the space your
1422 program requires is less or equal to the amount physically present.
1424 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1425 config MIPS_VPE_APSP_API
1426 bool "Enable support for AP/SP API (RTLX)"
1427 depends on MIPS_VPE_LOADER
1430 config MIPS_APSP_KSPD
1432 depends on MIPS_VPE_APSP_API
1435 KSPD is a kernel daemon that accepts syscall requests from the SP
1436 side, actions them and returns the results. It also handles the
1437 "exit" syscall notifying other kernel modules the SP program is
1438 exiting. You probably want to say yes here.
1440 config SB1_PASS_1_WORKAROUNDS
1442 depends on CPU_SB1_PASS_1
1445 config SB1_PASS_2_WORKAROUNDS
1447 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1450 config SB1_PASS_2_1_WORKAROUNDS
1452 depends on CPU_SB1 && CPU_SB1_PASS_2
1455 config 64BIT_PHYS_ADDR
1456 bool "Support for 64-bit physical address space"
1457 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1462 config CPU_HAS_SMARTMIPS
1463 depends on SYS_SUPPORTS_SMARTMIPS
1464 bool "Support for the SmartMIPS ASE"
1466 SmartMIPS is a extension of the MIPS32 architecture aimed at
1467 increased security at both hardware and software level for
1468 smartcards. Enabling this option will allow proper use of the
1469 SmartMIPS instructions by Linux applications. However a kernel with
1470 this option will not work on a MIPS core without SmartMIPS core. If
1471 you don't know you probably don't have SmartMIPS and should say N
1477 config 64BIT_CONTEXT
1478 bool "Save 64bit integer registers"
1479 depends on 32BIT && CPU_LOONGSON2
1481 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1482 registers can still be accessed as 64bit, mainly for multimedia
1483 instructions. We must have all 64bit save/restored to make sure
1484 those instructions to get correct result.
1487 # Vectored interrupt mode is an R2 feature
1489 config CPU_MIPSR2_IRQ_VI
1493 # Extended interrupt mode is an R2 feature
1495 config CPU_MIPSR2_IRQ_EI
1499 # Shadow registers are an R2 feature
1501 config CPU_MIPSR2_SRS
1506 depends on !CPU_R3000
1510 # Use the generic interrupt handling code in kernel/irq/:
1512 config GENERIC_HARDIRQS
1516 config GENERIC_IRQ_PROBE
1524 # - Highmem only makes sense for the 32-bit kernel.
1525 # - The current highmem code will only work properly on physically indexed
1526 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1527 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1528 # moment we protect the user and offer the highmem option only on machines
1529 # where it's known to be safe. This will not offer highmem on a few systems
1530 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1531 # indexed CPUs but we're playing safe.
1532 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1533 # know they might have memory configurations that could make use of highmem
1537 bool "High Memory Support"
1538 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1540 config CPU_SUPPORTS_HIGHMEM
1543 config SYS_SUPPORTS_HIGHMEM
1546 config SYS_SUPPORTS_SMARTMIPS
1549 config ARCH_FLATMEM_ENABLE
1553 config ARCH_DISCONTIGMEM_ENABLE
1555 default y if SGI_IP27
1557 Say Y to support efficient handling of discontiguous physical memory,
1558 for architectures which are either NUMA (Non-Uniform Memory Access)
1559 or have huge holes in the physical address space for other reasons.
1560 See <file:Documentation/vm/numa> for more.
1562 config ARCH_SPARSEMEM_ENABLE
1564 select SPARSEMEM_STATIC
1568 depends on SYS_SUPPORTS_NUMA
1570 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1571 Access). This option improves performance on systems with more
1572 than two nodes; on two node systems it is generally better to
1573 leave it disabled; on single node systems disable this option
1576 config SYS_SUPPORTS_NUMA
1582 depends on NEED_MULTIPLE_NODES
1587 bool "Multi-Processing support"
1588 depends on SYS_SUPPORTS_SMP
1591 This enables support for systems with more than one CPU. If you have
1592 a system with only one CPU, like most personal computers, say N. If
1593 you have a system with more than one CPU, say Y.
1595 If you say N here, the kernel will run on single and multiprocessor
1596 machines, but will use only one CPU of a multiprocessor machine. If
1597 you say Y here, the kernel will run on many, but not all,
1598 singleprocessor machines. On a singleprocessor machine, the kernel
1599 will run faster if you say N here.
1601 People using multiprocessor machines who say Y here should also say
1602 Y to "Enhanced Real Time Clock Support", below.
1604 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1605 available at <http://www.tldp.org/docs.html#howto>.
1607 If you don't know what to do here, say N.
1609 config SYS_SUPPORTS_SMP
1612 config NR_CPUS_DEFAULT_1
1615 config NR_CPUS_DEFAULT_2
1618 config NR_CPUS_DEFAULT_4
1621 config NR_CPUS_DEFAULT_8
1624 config NR_CPUS_DEFAULT_16
1627 config NR_CPUS_DEFAULT_32
1630 config NR_CPUS_DEFAULT_64
1634 int "Maximum number of CPUs (2-64)"
1635 range 1 64 if NR_CPUS_DEFAULT_1
1637 default "1" if NR_CPUS_DEFAULT_1
1638 default "2" if NR_CPUS_DEFAULT_2
1639 default "4" if NR_CPUS_DEFAULT_4
1640 default "8" if NR_CPUS_DEFAULT_8
1641 default "16" if NR_CPUS_DEFAULT_16
1642 default "32" if NR_CPUS_DEFAULT_32
1643 default "64" if NR_CPUS_DEFAULT_64
1645 This allows you to specify the maximum number of CPUs which this
1646 kernel will support. The maximum supported value is 32 for 32-bit
1647 kernel and 64 for 64-bit kernels; the minimum value which makes
1648 sense is 1 for Qemu (useful only for kernel debugging purposes)
1649 and 2 for all others.
1651 This is purely to save memory - each supported CPU adds
1652 approximately eight kilobytes to the kernel image. For best
1653 performance should round up your number of processors to the next
1657 # Timer Interrupt Frequency Configuration
1661 prompt "Timer frequency"
1664 Allows the configuration of the timer frequency.
1667 bool "48 HZ" if SYS_SUPPORTS_48HZ
1670 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1673 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1676 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1679 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1682 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1685 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1689 config SYS_SUPPORTS_48HZ
1692 config SYS_SUPPORTS_100HZ
1695 config SYS_SUPPORTS_128HZ
1698 config SYS_SUPPORTS_250HZ
1701 config SYS_SUPPORTS_256HZ
1704 config SYS_SUPPORTS_1000HZ
1707 config SYS_SUPPORTS_1024HZ
1710 config SYS_SUPPORTS_ARBIT_HZ
1712 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1713 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1714 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1715 !SYS_SUPPORTS_1024HZ
1720 default 100 if HZ_100
1721 default 128 if HZ_128
1722 default 250 if HZ_250
1723 default 256 if HZ_256
1724 default 1000 if HZ_1000
1725 default 1024 if HZ_1024
1727 source "kernel/Kconfig.preempt"
1729 config MIPS_INSANE_LARGE
1730 bool "Support for large 64-bit configurations"
1731 depends on CPU_R10000 && 64BIT
1733 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1734 previous 64-bit processors which only supported 40 bit / 1TB. If you
1735 need processes of more than 1TB virtual address space, say Y here.
1736 This will result in additional memory usage, so it is not
1737 recommended for normal users.
1740 bool "Kexec system call (EXPERIMENTAL)"
1741 depends on EXPERIMENTAL
1743 kexec is a system call that implements the ability to shutdown your
1744 current kernel, and to start another kernel. It is like a reboot
1745 but it is independent of the system firmware. And like a reboot
1746 you can start any kernel with it, not just Linux.
1748 The name comes from the similiarity to the exec system call.
1750 It is an ongoing process to be certain the hardware in a machine
1751 is properly shutdown, so do not be surprised if this code does not
1752 initially work for you. It may help to enable device hotplugging
1753 support. As of this writing the exact hardware interface is
1754 strongly in flux, so no good recommendation can be made.
1757 bool "Enable seccomp to safely compute untrusted bytecode"
1758 depends on PROC_FS && BROKEN
1761 This kernel feature is useful for number crunching applications
1762 that may need to compute untrusted bytecode during their
1763 execution. By using pipes or other transports made available to
1764 the process as file descriptors supporting the read/write
1765 syscalls, it's possible to isolate those applications in
1766 their own address space using seccomp. Once seccomp is
1767 enabled via /proc/<pid>/seccomp, it cannot be disabled
1768 and the task is only allowed to execute a few safe syscalls
1769 defined by each seccomp mode.
1771 If unsure, say Y. Only embedded should say N here.
1775 config RWSEM_GENERIC_SPINLOCK
1779 config LOCKDEP_SUPPORT
1783 config STACKTRACE_SUPPORT
1787 source "init/Kconfig"
1789 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1797 bool "Support for PCI controller"
1798 depends on HW_HAS_PCI
1800 Find out whether you have a PCI motherboard. PCI is the name of a
1801 bus system, i.e. the way the CPU talks to the other stuff inside
1802 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1805 The PCI-HOWTO, available from
1806 <http://www.tldp.org/docs.html#howto>, contains valuable
1807 information about which PCI hardware does work under Linux and which
1814 source "drivers/pci/Kconfig"
1817 # ISA support is now enabled via select. Too many systems still have the one
1818 # or other ISA chip on the board that users don't know about so don't expect
1819 # users to choose the right thing ...
1826 depends on HW_HAS_EISA
1828 select GENERIC_ISA_DMA
1830 The Extended Industry Standard Architecture (EISA) bus was
1831 developed as an open alternative to the IBM MicroChannel bus.
1833 The EISA bus provided some of the features of the IBM MicroChannel
1834 bus while maintaining backward compatibility with cards made for
1835 the older ISA bus. The EISA bus saw limited use between 1988 and
1836 1995 when it was made obsolete by the PCI bus.
1838 Say Y here if you are building a kernel for an EISA-based machine.
1842 source "drivers/eisa/Kconfig"
1845 bool "TURBOchannel support"
1846 depends on MACH_DECSTATION
1848 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1849 processors. Documentation on writing device drivers for TurboChannel
1851 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1854 # bool "Access.Bus support"
1864 source "drivers/pcmcia/Kconfig"
1866 source "drivers/pci/hotplug/Kconfig"
1870 menu "Executable file formats"
1872 source "fs/Kconfig.binfmt"
1878 bool "Use 64-bit ELF format for building"
1881 A 64-bit kernel is usually built using the 64-bit ELF binary object
1882 format as it's one that allows arbitrary 64-bit constructs. For
1883 kernels that are loaded within the KSEG compatibility segments the
1884 32-bit ELF format can optionally be used resulting in a somewhat
1885 smaller binary, but this option is not explicitly supported by the
1886 toolchain and since binutils 2.14 it does not even work at all.
1888 Say Y to use the 64-bit format or N to use the 32-bit one.
1893 bool "Include IRIX binary compatibility"
1894 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1896 config MIPS32_COMPAT
1897 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1900 Select this option if you want Linux/MIPS 32-bit binary
1901 compatibility. Since all software available for Linux/MIPS is
1902 currently 32-bit you should say Y here.
1906 depends on MIPS32_COMPAT
1909 config SYSVIPC_COMPAT
1911 depends on COMPAT && SYSVIPC
1915 bool "Kernel support for o32 binaries"
1916 depends on MIPS32_COMPAT
1918 Select this option if you want to run o32 binaries. These are pure
1919 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1920 existing binaries are in this format.
1925 bool "Kernel support for n32 binaries"
1926 depends on MIPS32_COMPAT
1928 Select this option if you want to run n32 binaries. These are
1929 64-bit binaries using 32-bit quantities for addressing and certain
1930 data that would normally be 64-bit. They are used in special
1937 default y if MIPS32_O32 || MIPS32_N32
1941 menu "Power management options"
1943 source "kernel/power/Kconfig"
1947 source "net/Kconfig"
1949 source "drivers/Kconfig"
1953 source "arch/mips/oprofile/Kconfig"
1955 source "arch/mips/Kconfig.debug"
1957 source "security/Kconfig"
1959 source "crypto/Kconfig"
1961 source "lib/Kconfig"