4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
20 bool "4G Systems MTX-1 board"
21 select DMA_NONCOHERENT
23 select RESOURCES_64BIT if PCI
25 select SYS_HAS_CPU_MIPS32_R1
26 select SYS_SUPPORTS_LITTLE_ENDIAN
29 bool "AMD Alchemy Bosporus board"
31 select DMA_NONCOHERENT
32 select SYS_HAS_CPU_MIPS32_R1
33 select SYS_SUPPORTS_LITTLE_ENDIAN
36 bool "AMD Alchemy PB1000 board"
38 select DMA_NONCOHERENT
40 select RESOURCES_64BIT if PCI
42 select SYS_HAS_CPU_MIPS32_R1
43 select SYS_SUPPORTS_LITTLE_ENDIAN
46 bool "AMD Alchemy PB1100 board"
48 select DMA_NONCOHERENT
50 select RESOURCES_64BIT if PCI
52 select SYS_HAS_CPU_MIPS32_R1
53 select SYS_SUPPORTS_LITTLE_ENDIAN
56 bool "AMD Alchemy PB1500 board"
58 select DMA_NONCOHERENT
60 select RESOURCES_64BIT if PCI
61 select SYS_HAS_CPU_MIPS32_R1
62 select SYS_SUPPORTS_LITTLE_ENDIAN
65 bool "AMD Alchemy PB1550 board"
67 select DMA_NONCOHERENT
69 select MIPS_DISABLE_OBSOLETE_IDE
70 select RESOURCES_64BIT if PCI
71 select SYS_HAS_CPU_MIPS32_R1
72 select SYS_SUPPORTS_LITTLE_ENDIAN
75 bool "AMD Alchemy PB1200 board"
77 select DMA_NONCOHERENT
78 select MIPS_DISABLE_OBSOLETE_IDE
79 select RESOURCES_64BIT if PCI
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_SUPPORTS_LITTLE_ENDIAN
84 bool "AMD Alchemy DB1000 board"
86 select DMA_NONCOHERENT
88 select RESOURCES_64BIT if PCI
89 select SYS_HAS_CPU_MIPS32_R1
90 select SYS_SUPPORTS_LITTLE_ENDIAN
93 bool "AMD Alchemy DB1100 board"
95 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R1
97 select SYS_SUPPORTS_LITTLE_ENDIAN
100 bool "AMD Alchemy DB1500 board"
102 select DMA_NONCOHERENT
104 select MIPS_DISABLE_OBSOLETE_IDE
105 select RESOURCES_64BIT if PCI
106 select SYS_HAS_CPU_MIPS32_R1
107 select SYS_SUPPORTS_BIG_ENDIAN
108 select SYS_SUPPORTS_LITTLE_ENDIAN
111 bool "AMD Alchemy DB1550 board"
114 select DMA_NONCOHERENT
115 select MIPS_DISABLE_OBSOLETE_IDE
116 select RESOURCES_64BIT if PCI
117 select SYS_HAS_CPU_MIPS32_R1
118 select SYS_SUPPORTS_LITTLE_ENDIAN
121 bool "AMD Alchemy DB1200 board"
124 select MIPS_DISABLE_OBSOLETE_IDE
125 select SYS_HAS_CPU_MIPS32_R1
126 select SYS_SUPPORTS_LITTLE_ENDIAN
129 bool "AMD Alchemy Mirage board"
130 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_MIPS32_R1
133 select SYS_SUPPORTS_LITTLE_ENDIAN
136 bool "Basler eXcite smart camera support"
143 select SYS_HAS_CPU_RM9000
144 select SYS_SUPPORTS_32BIT_KERNEL
145 select SYS_SUPPORTS_64BIT_KERNEL
146 select SYS_SUPPORTS_BIG_ENDIAN
147 select SYS_SUPPORTS_KGDB
149 The eXcite is a smart camera platform manufactured by
150 Basler Vision Technologies AG
152 config BASLER_EXCITE_PROTOTYPE
153 bool "Support for pre-release units"
154 depends on BASLER_EXCITE
157 Pre-series (prototype) units are different from later ones in
158 some ways. Select this option if you have one of these. Please
159 note that a kernel built with this option selected will not be
160 able to run on normal units.
164 select DMA_NONCOHERENT
169 select SYS_HAS_CPU_NEVADA
170 select SYS_SUPPORTS_32BIT_KERNEL
171 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select GENERIC_HARDIRQS_NO__DO_IRQ
175 config MACH_DECSTATION
178 select DMA_NONCOHERENT
181 select SYS_HAS_CPU_R3000
182 select SYS_HAS_CPU_R4X00
183 select SYS_SUPPORTS_32BIT_KERNEL
184 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
185 select SYS_SUPPORTS_LITTLE_ENDIAN
186 select SYS_SUPPORTS_128HZ
187 select SYS_SUPPORTS_256HZ
188 select SYS_SUPPORTS_1024HZ
190 This enables support for DEC's MIPS based workstations. For details
191 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
192 DECstation porting pages on <http://decstation.unix-ag.org/>.
194 If you have one of the following DECstation Models you definitely
195 want to choose R4xx0 for the CPU Type:
202 otherwise choose R3000.
205 bool "Galileo EV64120 Evaluation board (EXPERIMENTAL)"
206 depends on EXPERIMENTAL
207 select DMA_NONCOHERENT
210 select SYS_HAS_CPU_R5000
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_64BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_KGDB
216 This is an evaluation board based on the Galileo GT-64120
217 single-chip system controller that contains a MIPS R5000 compatible
218 core running at 75/100MHz. Their website is located at
219 <http://www.marvell.com/>. Say Y here if you wish to build a
220 kernel for this platform.
223 bool "Jazz family of machines"
226 select ARCH_MAY_HAVE_PC_FDC
227 select GENERIC_ISA_DMA
231 select SYS_HAS_CPU_R4X00
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
234 select SYS_SUPPORTS_100HZ
235 select GENERIC_HARDIRQS_NO__DO_IRQ
237 This a family of machines based on the MIPS R4030 chipset which was
238 used by several vendors to build RISC/os and Windows NT workstations.
239 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
240 Olivetti M700-10 workstations.
243 bool "LASAT Networks platforms"
244 select DMA_NONCOHERENT
248 select R5000_CPU_SCACHE
249 select SYS_HAS_CPU_R5000
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
252 select SYS_SUPPORTS_LITTLE_ENDIAN
253 select GENERIC_HARDIRQS_NO__DO_IRQ
256 bool "MIPS Atlas board"
258 select DMA_NONCOHERENT
261 select MIPS_BOARDS_GEN
265 select RM7000_CPU_SCACHE
267 select SYS_HAS_CPU_MIPS32_R1
268 select SYS_HAS_CPU_MIPS32_R2
269 select SYS_HAS_CPU_MIPS64_R1
270 select SYS_HAS_CPU_NEVADA
271 select SYS_HAS_CPU_RM7000
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_64BIT_KERNEL
274 select SYS_SUPPORTS_BIG_ENDIAN
275 select SYS_SUPPORTS_LITTLE_ENDIAN
276 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
277 select SYS_SUPPORTS_SMARTMIPS
278 select GENERIC_HARDIRQS_NO__DO_IRQ
280 This enables support for the MIPS Technologies Atlas evaluation
284 bool "MIPS Malta board"
285 select ARCH_MAY_HAVE_PC_FDC
287 select HAVE_STD_PC_SERIAL_PORT
288 select DMA_NONCOHERENT
289 select GENERIC_ISA_DMA
293 select MIPS_BOARDS_GEN
295 select MIPS_CPU_SCACHE
299 select SYS_HAS_CPU_MIPS32_R1
300 select SYS_HAS_CPU_MIPS32_R2
301 select SYS_HAS_CPU_MIPS64_R1
302 select SYS_HAS_CPU_NEVADA
303 select SYS_HAS_CPU_RM7000
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_64BIT_KERNEL
306 select SYS_SUPPORTS_BIG_ENDIAN
307 select SYS_SUPPORTS_LITTLE_ENDIAN
308 select SYS_SUPPORTS_MULTITHREADING
309 select SYS_SUPPORTS_SMARTMIPS
311 This enables support for the MIPS Technologies Malta evaluation
315 bool "MIPS SEAD board (EXPERIMENTAL)"
316 depends on EXPERIMENTAL
318 select DMA_NONCOHERENT
319 select MIPS_BOARDS_GEN
320 select SYS_HAS_CPU_MIPS32_R1
321 select SYS_HAS_CPU_MIPS32_R2
322 select SYS_HAS_CPU_MIPS64_R1
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_LITTLE_ENDIAN
327 select SYS_SUPPORTS_SMARTMIPS
329 This enables support for the MIPS Technologies SEAD evaluation
333 bool "Wind River PPMC board"
336 select DMA_NONCOHERENT
340 select SYS_HAS_CPU_MIPS32_R1
341 select SYS_HAS_CPU_MIPS32_R2
342 select SYS_HAS_CPU_MIPS64_R1
343 select SYS_HAS_CPU_NEVADA
344 select SYS_HAS_CPU_RM7000
345 select SYS_SUPPORTS_32BIT_KERNEL
346 select SYS_SUPPORTS_64BIT_KERNEL
347 select SYS_SUPPORTS_BIG_ENDIAN
348 select SYS_SUPPORTS_LITTLE_ENDIAN
350 This enables support for the Wind River MIPS32 4KC PPMC evaluation
351 board, which is based on GT64120 bridge chip.
354 bool 'MIPS simulator (MIPSsim)'
355 select DMA_NONCOHERENT
357 select SYS_HAS_CPU_MIPS32_R1
358 select SYS_HAS_CPU_MIPS32_R2
359 select SYS_SUPPORTS_32BIT_KERNEL
360 select SYS_SUPPORTS_BIG_ENDIAN
361 select SYS_SUPPORTS_LITTLE_ENDIAN
363 This option enables support for MIPS Technologies MIPSsim software
366 config MOMENCO_JAGUAR_ATX
367 bool "Momentum Jaguar board"
369 select DMA_NONCOHERENT
376 select RM7000_CPU_SCACHE
378 select SYS_HAS_CPU_RM9000
379 select SYS_SUPPORTS_32BIT_KERNEL
380 select SYS_SUPPORTS_64BIT_KERNEL
381 select SYS_SUPPORTS_BIG_ENDIAN
382 select SYS_SUPPORTS_KGDB
384 The Jaguar ATX is a MIPS-based Single Board Computer (SBC) made by
385 Momentum Computer <http://www.momenco.com/>.
387 config MOMENCO_OCELOT
388 bool "Momentum Ocelot board"
389 select DMA_NONCOHERENT
394 select RM7000_CPU_SCACHE
396 select SYS_HAS_CPU_RM7000
397 select SYS_SUPPORTS_32BIT_KERNEL
398 select SYS_SUPPORTS_64BIT_KERNEL
399 select SYS_SUPPORTS_BIG_ENDIAN
400 select SYS_SUPPORTS_KGDB
402 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
403 Momentum Computer <http://www.momenco.com/>.
405 config MOMENCO_OCELOT_3
406 bool "Momentum Ocelot-3 board"
408 select DMA_NONCOHERENT
414 select RM7000_CPU_SCACHE
416 select SYS_HAS_CPU_RM9000
417 select SYS_SUPPORTS_32BIT_KERNEL
418 select SYS_SUPPORTS_64BIT_KERNEL
419 select SYS_SUPPORTS_BIG_ENDIAN
421 The Ocelot-3 is based off Discovery III System Controller and
422 PMC-Sierra Rm79000 core.
424 config MOMENCO_OCELOT_C
425 bool "Momentum Ocelot-C board"
426 select DMA_NONCOHERENT
431 select RM7000_CPU_SCACHE
433 select SYS_HAS_CPU_RM7000
434 select SYS_SUPPORTS_32BIT_KERNEL
435 select SYS_SUPPORTS_64BIT_KERNEL
436 select SYS_SUPPORTS_BIG_ENDIAN
437 select GENERIC_HARDIRQS_NO__DO_IRQ
439 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
440 Momentum Computer <http://www.momenco.com/>.
442 config MOMENCO_OCELOT_G
443 bool "Momentum Ocelot-G board"
444 select DMA_NONCOHERENT
449 select RM7000_CPU_SCACHE
451 select SYS_HAS_CPU_RM7000
452 select SYS_SUPPORTS_32BIT_KERNEL
453 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
454 select SYS_SUPPORTS_BIG_ENDIAN
456 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
457 Momentum Computer <http://www.momenco.com/>.
460 bool "MyCable XXS1500 board"
461 select DMA_NONCOHERENT
463 select SYS_SUPPORTS_LITTLE_ENDIAN
466 bool "Philips PNX8550 based Viper2-PCI board"
468 select SYS_SUPPORTS_LITTLE_ENDIAN
471 bool "Philips PNX8550 based JBS board"
473 select SYS_SUPPORTS_LITTLE_ENDIAN
475 config PNX8550_STB810
476 bool "Support for Philips PNX8550 based STB810 board"
478 select SYS_SUPPORTS_LITTLE_ENDIAN
481 bool "NEC DDB Vrc-5477"
482 select DDB5XXX_COMMON
483 select DMA_NONCOHERENT
487 select SYS_HAS_CPU_R5432
488 select SYS_SUPPORTS_32BIT_KERNEL
489 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
490 select SYS_SUPPORTS_KGDB
491 select SYS_SUPPORTS_KGDB
492 select SYS_SUPPORTS_LITTLE_ENDIAN
494 This enables support for the R5432-based NEC DDB Vrc-5477,
495 or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
497 Features : kernel debugging, serial terminal, NFS root fs, on-board
498 ether port USB, AC97, PCI, etc.
501 bool "NEC VR41XX-based machines"
502 select SYS_HAS_CPU_VR41XX
503 select SYS_SUPPORTS_32BIT_KERNEL
504 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
505 select GENERIC_HARDIRQS_NO__DO_IRQ
508 bool "PMC-Sierra Yosemite eval board"
515 select SYS_HAS_CPU_RM9000
516 select SYS_SUPPORTS_32BIT_KERNEL
517 select SYS_SUPPORTS_64BIT_KERNEL
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_HIGHMEM
520 select SYS_SUPPORTS_KGDB
521 select SYS_SUPPORTS_SMP
523 Yosemite is an evaluation board for the RM9000x2 processor
524 manufactured by PMC-Sierra.
529 select GENERIC_ISA_DMA
530 select HAVE_STD_PC_SERIAL_PORT
535 select SYS_HAS_CPU_MIPS32_R1
536 select SYS_SUPPORTS_32BIT_KERNEL
537 select SYS_SUPPORTS_BIG_ENDIAN
538 select SYS_SUPPORTS_LITTLE_ENDIAN
539 select ARCH_SPARSEMEM_ENABLE
540 select GENERIC_HARDIRQS_NO__DO_IRQ
542 Qemu is a software emulator which among other architectures also
543 can simulate a MIPS32 4Kc system. This patch adds support for the
544 system architecture that currently is being simulated by Qemu. It
545 will eventually be removed again when Qemu has the capability to
546 simulate actual MIPS hardware platforms. More information on Qemu
547 can be found at http://www.linux-mips.org/wiki/Qemu.
550 bool "Support for NEC EMMA2RH Mark-eins"
551 select DMA_NONCOHERENT
555 select SYS_SUPPORTS_32BIT_KERNEL
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_LITTLE_ENDIAN
558 select SYS_HAS_CPU_R5000
560 This enables support for the R5432-based NEC Mark-eins
561 boards with R5500 CPU.
564 bool "SGI IP22 (Indy/Indigo2)"
568 select DMA_NONCOHERENT
570 select IP22_CPU_SCACHE
572 select GENERIC_ISA_DMA_SUPPORT_BROKEN
574 select SYS_HAS_CPU_R4X00
575 select SYS_HAS_CPU_R5000
576 select SYS_SUPPORTS_32BIT_KERNEL
577 select SYS_SUPPORTS_64BIT_KERNEL
578 select SYS_SUPPORTS_BIG_ENDIAN
580 This are the SGI Indy, Challenge S and Indigo2, as well as certain
581 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
582 that runs on these, say Y here.
585 bool "SGI IP27 (Origin200/2000)"
592 select NR_CPUS_DEFAULT_64
594 select SYS_HAS_CPU_R10000
595 select SYS_SUPPORTS_64BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_KGDB
598 select SYS_SUPPORTS_NUMA
599 select SYS_SUPPORTS_SMP
600 select GENERIC_HARDIRQS_NO__DO_IRQ
602 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
603 workstations. To compile a Linux kernel that runs on these, say Y
607 bool "SGI IP32 (O2) (EXPERIMENTAL)"
608 depends on EXPERIMENTAL
612 select DMA_NONCOHERENT
614 select R5000_CPU_SCACHE
615 select RM7000_CPU_SCACHE
616 select SYS_HAS_CPU_R5000
617 select SYS_HAS_CPU_R10000 if BROKEN
618 select SYS_HAS_CPU_RM7000
619 select SYS_HAS_CPU_NEVADA
620 select SYS_SUPPORTS_64BIT_KERNEL
621 select SYS_SUPPORTS_BIG_ENDIAN
623 If you want this kernel to run on SGI O2 workstation, say Y here.
626 bool "Sibyte BCM91480B-BigSur"
629 select NR_CPUS_DEFAULT_4
631 select SIBYTE_BCM1x80
633 select SYS_HAS_CPU_SB1
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_LITTLE_ENDIAN
638 bool "Sibyte BCM91250A-SWARM"
641 select NR_CPUS_DEFAULT_2
644 select SYS_HAS_CPU_SB1
645 select SYS_SUPPORTS_BIG_ENDIAN
646 select SYS_SUPPORTS_HIGHMEM
647 select SYS_SUPPORTS_KGDB
648 select SYS_SUPPORTS_LITTLE_ENDIAN
650 config SIBYTE_SENTOSA
651 bool "Sibyte BCM91250E-Sentosa"
652 depends on EXPERIMENTAL
655 select NR_CPUS_DEFAULT_2
658 select SYS_HAS_CPU_SB1
659 select SYS_SUPPORTS_BIG_ENDIAN
660 select SYS_SUPPORTS_LITTLE_ENDIAN
663 bool "Sibyte BCM91125E-Rhone"
664 depends on EXPERIMENTAL
667 select SIBYTE_BCM1125H
669 select SYS_HAS_CPU_SB1
670 select SYS_SUPPORTS_BIG_ENDIAN
671 select SYS_SUPPORTS_LITTLE_ENDIAN
674 bool "Sibyte BCM91120x-Carmel"
675 depends on EXPERIMENTAL
678 select SIBYTE_BCM1120
680 select SYS_HAS_CPU_SB1
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_LITTLE_ENDIAN
684 config SIBYTE_PTSWARM
685 bool "Sibyte BCM91250PT-PTSWARM"
686 depends on EXPERIMENTAL
689 select NR_CPUS_DEFAULT_2
692 select SYS_HAS_CPU_SB1
693 select SYS_SUPPORTS_BIG_ENDIAN
694 select SYS_SUPPORTS_HIGHMEM
695 select SYS_SUPPORTS_LITTLE_ENDIAN
697 config SIBYTE_LITTLESUR
698 bool "Sibyte BCM91250C2-LittleSur"
699 depends on EXPERIMENTAL
702 select NR_CPUS_DEFAULT_2
705 select SYS_HAS_CPU_SB1
706 select SYS_SUPPORTS_BIG_ENDIAN
707 select SYS_SUPPORTS_HIGHMEM
708 select SYS_SUPPORTS_LITTLE_ENDIAN
711 bool "Sibyte BCM91120C-CRhine"
712 depends on EXPERIMENTAL
715 select SIBYTE_BCM1120
717 select SYS_HAS_CPU_SB1
718 select SYS_SUPPORTS_BIG_ENDIAN
719 select SYS_SUPPORTS_LITTLE_ENDIAN
722 bool "Sibyte BCM91125C-CRhone"
723 depends on EXPERIMENTAL
726 select SIBYTE_BCM1125
728 select SYS_HAS_CPU_SB1
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_HIGHMEM
731 select SYS_SUPPORTS_LITTLE_ENDIAN
734 bool "SNI RM200/300/400"
735 select ARC if CPU_LITTLE_ENDIAN
736 select ARC32 if CPU_LITTLE_ENDIAN
737 select ARCH_MAY_HAVE_PC_FDC
739 select DMA_NONCOHERENT
740 select GENERIC_ISA_DMA
747 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
748 select SYS_HAS_CPU_R4X00
749 select SYS_HAS_CPU_R5000
750 select SYS_HAS_CPU_R10000
751 select R5000_CPU_SCACHE
752 select SYS_SUPPORTS_32BIT_KERNEL
753 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
754 select SYS_SUPPORTS_BIG_ENDIAN
755 select SYS_SUPPORTS_HIGHMEM
756 select SYS_SUPPORTS_LITTLE_ENDIAN
758 The SNI RM200/300/400 are MIPS-based machines manufactured by
759 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
760 Technology and now in turn merged with Fujitsu. Say Y here to
761 support this machine type.
763 config TOSHIBA_JMR3927
764 bool "Toshiba JMR-TX3927 board"
765 select DMA_NONCOHERENT
769 select SYS_HAS_CPU_TX39XX
770 select SYS_SUPPORTS_32BIT_KERNEL
771 select SYS_SUPPORTS_LITTLE_ENDIAN
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select TOSHIBA_BOARDS
775 config TOSHIBA_RBTX4927
776 bool "Toshiba TBTX49[23]7 board"
777 select DMA_NONCOHERENT
778 select HAS_TXX9_SERIAL
783 select SYS_HAS_CPU_TX49XX
784 select SYS_SUPPORTS_32BIT_KERNEL
785 select SYS_SUPPORTS_64BIT_KERNEL
786 select SYS_SUPPORTS_LITTLE_ENDIAN
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_KGDB
789 select TOSHIBA_BOARDS
790 select GENERIC_HARDIRQS_NO__DO_IRQ
792 This Toshiba board is based on the TX4927 processor. Say Y here to
793 support this machine type
795 config TOSHIBA_RBTX4938
796 bool "Toshiba RBTX4938 board"
797 select HAVE_STD_PC_SERIAL_PORT
798 select DMA_NONCOHERENT
799 select GENERIC_ISA_DMA
800 select HAS_TXX9_SERIAL
805 select SYS_HAS_CPU_TX49XX
806 select SYS_SUPPORTS_32BIT_KERNEL
807 select SYS_SUPPORTS_LITTLE_ENDIAN
808 select SYS_SUPPORTS_BIG_ENDIAN
809 select SYS_SUPPORTS_KGDB
810 select TOSHIBA_BOARDS
811 select GENERIC_HARDIRQS_NO__DO_IRQ
813 This Toshiba board is based on the TX4938 processor. Say Y here to
814 support this machine type
818 source "arch/mips/ddb5xxx/Kconfig"
819 source "arch/mips/gt64120/ev64120/Kconfig"
820 source "arch/mips/jazz/Kconfig"
821 source "arch/mips/lasat/Kconfig"
822 source "arch/mips/momentum/Kconfig"
823 source "arch/mips/pmc-sierra/Kconfig"
824 source "arch/mips/sgi-ip27/Kconfig"
825 source "arch/mips/sibyte/Kconfig"
826 source "arch/mips/tx4927/Kconfig"
827 source "arch/mips/tx4938/Kconfig"
828 source "arch/mips/vr41xx/Kconfig"
829 source "arch/mips/philips/pnx8550/common/Kconfig"
830 source "arch/mips/cobalt/Kconfig"
834 config RWSEM_GENERIC_SPINLOCK
838 config RWSEM_XCHGADD_ALGORITHM
841 config ARCH_HAS_ILOG2_U32
845 config ARCH_HAS_ILOG2_U64
849 config GENERIC_FIND_NEXT_BIT
853 config GENERIC_HWEIGHT
857 config GENERIC_CALIBRATE_DELAY
865 config SCHED_NO_NO_OMIT_FRAME_POINTER
869 config GENERIC_HARDIRQS_NO__DO_IRQ
874 # Select some configuration options automatically based on user selections.
879 config ARCH_MAY_HAVE_PC_FDC
890 select DMA_NEED_PCI_MAP_STATE
892 config DMA_NONCOHERENT
894 select DMA_NEED_PCI_MAP_STATE
896 config DMA_NEED_PCI_MAP_STATE
902 config GENERIC_ISA_DMA
911 select SYS_SUPPORTS_HIGHMEM
922 config MIPS_DISABLE_OBSOLETE_IDE
925 config GENERIC_ISA_DMA_SUPPORT_BROKEN
929 # Endianess selection. Sufficiently obscure so many users don't know what to
930 # answer,so we try hard to limit the available choices. Also the use of a
931 # choice statement should be more obvious to the user.
934 prompt "Endianess selection"
936 Some MIPS machines can be configured for either little or big endian
937 byte order. These modes require different kernels and a different
938 Linux distribution. In general there is one preferred byteorder for a
939 particular system but some systems are just as commonly used in the
940 one or the other endianess.
942 config CPU_BIG_ENDIAN
944 depends on SYS_SUPPORTS_BIG_ENDIAN
946 config CPU_LITTLE_ENDIAN
948 depends on SYS_SUPPORTS_LITTLE_ENDIAN
953 config SYS_SUPPORTS_APM_EMULATION
956 config SYS_SUPPORTS_BIG_ENDIAN
959 config SYS_SUPPORTS_LITTLE_ENDIAN
974 config DDB5XXX_COMMON
976 select SYS_SUPPORTS_KGDB
978 config MIPS_BOARDS_GEN
989 select HAS_TXX9_SERIAL
1022 select SYS_HAS_CPU_MIPS32_R1
1023 select SYS_SUPPORTS_32BIT_KERNEL
1024 select SYS_SUPPORTS_APM_EMULATION
1025 select SYS_SUPPORTS_KGDB
1033 select DMA_NONCOHERENT
1035 select SYS_HAS_CPU_MIPS32_R1
1036 select SYS_SUPPORTS_32BIT_KERNEL
1037 select GENERIC_HARDIRQS_NO__DO_IRQ
1038 select SYS_SUPPORTS_KGDB
1040 config SWAP_IO_SPACE
1048 config SERIAL_RM9000
1058 # Unfortunately not all GT64120 systems run the chip at the same clock.
1059 # As the user for the clock rate and try to minimize the available options.
1062 prompt "Galileo Chip Clock"
1063 #default SYSCLK_83 if MIPS_EV64120
1064 depends on MIPS_EV64120 || MOMENCO_OCELOT || MOMENCO_OCELOT_G
1065 default SYSCLK_83 if MIPS_EV64120
1066 default SYSCLK_100 if MOMENCO_OCELOT || MOMENCO_OCELOT_G
1069 bool "75" if MIPS_EV64120
1072 bool "83.3" if MIPS_EV64120
1075 bool "100" if MIPS_EV64120 || MOMENCO_OCELOT || MOMENCO_OCELOT_G
1085 config MIPS_L1_CACHE_SHIFT
1087 default "4" if MACH_DECSTATION || SNI_RM
1088 default "7" if SGI_IP27
1091 config HAVE_STD_PC_SERIAL_PORT
1095 bool "ARC console support"
1096 depends on SGI_IP22 || SNI_RM
1100 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1105 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
1114 config TOSHIBA_BOARDS
1117 menu "CPU selection"
1123 config CPU_MIPS32_R1
1124 bool "MIPS32 Release 1"
1125 depends on SYS_HAS_CPU_MIPS32_R1
1127 select CPU_HAS_PREFETCH
1128 select CPU_SUPPORTS_32BIT_KERNEL
1129 select CPU_SUPPORTS_HIGHMEM
1131 Choose this option to build a kernel for release 1 or later of the
1132 MIPS32 architecture. Most modern embedded systems with a 32-bit
1133 MIPS processor are based on a MIPS32 processor. If you know the
1134 specific type of processor in your system, choose those that one
1135 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1136 Release 2 of the MIPS32 architecture is available since several
1137 years so chances are you even have a MIPS32 Release 2 processor
1138 in which case you should choose CPU_MIPS32_R2 instead for better
1141 config CPU_MIPS32_R2
1142 bool "MIPS32 Release 2"
1143 depends on SYS_HAS_CPU_MIPS32_R2
1145 select CPU_HAS_PREFETCH
1146 select CPU_SUPPORTS_32BIT_KERNEL
1147 select CPU_SUPPORTS_HIGHMEM
1149 Choose this option to build a kernel for release 2 or later of the
1150 MIPS32 architecture. Most modern embedded systems with a 32-bit
1151 MIPS processor are based on a MIPS32 processor. If you know the
1152 specific type of processor in your system, choose those that one
1153 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1155 config CPU_MIPS64_R1
1156 bool "MIPS64 Release 1"
1157 depends on SYS_HAS_CPU_MIPS64_R1
1159 select CPU_HAS_PREFETCH
1160 select CPU_SUPPORTS_32BIT_KERNEL
1161 select CPU_SUPPORTS_64BIT_KERNEL
1162 select CPU_SUPPORTS_HIGHMEM
1164 Choose this option to build a kernel for release 1 or later of the
1165 MIPS64 architecture. Many modern embedded systems with a 64-bit
1166 MIPS processor are based on a MIPS64 processor. If you know the
1167 specific type of processor in your system, choose those that one
1168 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1169 Release 2 of the MIPS64 architecture is available since several
1170 years so chances are you even have a MIPS64 Release 2 processor
1171 in which case you should choose CPU_MIPS64_R2 instead for better
1174 config CPU_MIPS64_R2
1175 bool "MIPS64 Release 2"
1176 depends on SYS_HAS_CPU_MIPS64_R2
1178 select CPU_HAS_PREFETCH
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_64BIT_KERNEL
1181 select CPU_SUPPORTS_HIGHMEM
1183 Choose this option to build a kernel for release 2 or later of the
1184 MIPS64 architecture. Many modern embedded systems with a 64-bit
1185 MIPS processor are based on a MIPS64 processor. If you know the
1186 specific type of processor in your system, choose those that one
1187 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1191 depends on SYS_HAS_CPU_R3000
1193 select CPU_SUPPORTS_32BIT_KERNEL
1194 select CPU_SUPPORTS_HIGHMEM
1196 Please make sure to pick the right CPU type. Linux/MIPS is not
1197 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1198 *not* work on R4000 machines and vice versa. However, since most
1199 of the supported machines have an R4000 (or similar) CPU, R4x00
1200 might be a safe bet. If the resulting kernel does not work,
1201 try to recompile with R3000.
1205 depends on SYS_HAS_CPU_TX39XX
1206 select CPU_SUPPORTS_32BIT_KERNEL
1210 depends on SYS_HAS_CPU_VR41XX
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_64BIT_KERNEL
1214 The options selects support for the NEC VR4100 series of processors.
1215 Only choose this option if you have one of these processors as a
1216 kernel built with this option will not run on any other type of
1217 processor or vice versa.
1221 depends on SYS_HAS_CPU_R4300
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_64BIT_KERNEL
1226 MIPS Technologies R4300-series processors.
1230 depends on SYS_HAS_CPU_R4X00
1232 select CPU_SUPPORTS_32BIT_KERNEL
1233 select CPU_SUPPORTS_64BIT_KERNEL
1235 MIPS Technologies R4000-series processors other than 4300, including
1236 the R4000, R4400, R4600, and 4700.
1240 depends on SYS_HAS_CPU_TX49XX
1242 select CPU_HAS_PREFETCH
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_64BIT_KERNEL
1248 depends on SYS_HAS_CPU_R5000
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_64BIT_KERNEL
1253 MIPS Technologies R5000-series processors other than the Nevada.
1257 depends on SYS_HAS_CPU_R5432
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_64BIT_KERNEL
1264 depends on EXPERIMENTAL
1266 depends on SYS_HAS_CPU_R6000
1267 select CPU_SUPPORTS_32BIT_KERNEL
1269 MIPS Technologies R6000 and R6000A series processors. Note these
1270 processors are extremely rare and the support for them is incomplete.
1274 depends on SYS_HAS_CPU_NEVADA
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1279 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1283 depends on EXPERIMENTAL
1284 depends on SYS_HAS_CPU_R8000
1286 select CPU_HAS_PREFETCH
1287 select CPU_SUPPORTS_64BIT_KERNEL
1289 MIPS Technologies R8000 processors. Note these processors are
1290 uncommon and the support for them is incomplete.
1294 depends on SYS_HAS_CPU_R10000
1296 select CPU_HAS_PREFETCH
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1299 select CPU_SUPPORTS_HIGHMEM
1301 MIPS Technologies R10000-series processors.
1305 depends on SYS_HAS_CPU_RM7000
1307 select CPU_HAS_PREFETCH
1308 select CPU_SUPPORTS_32BIT_KERNEL
1309 select CPU_SUPPORTS_64BIT_KERNEL
1310 select CPU_SUPPORTS_HIGHMEM
1314 depends on SYS_HAS_CPU_RM9000
1316 select CPU_HAS_PREFETCH
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1319 select CPU_SUPPORTS_HIGHMEM
1320 select WEAK_ORDERING
1324 depends on SYS_HAS_CPU_SB1
1326 select CPU_SUPPORTS_32BIT_KERNEL
1327 select CPU_SUPPORTS_64BIT_KERNEL
1328 select CPU_SUPPORTS_HIGHMEM
1329 select WEAK_ORDERING
1333 config SYS_HAS_CPU_MIPS32_R1
1336 config SYS_HAS_CPU_MIPS32_R2
1339 config SYS_HAS_CPU_MIPS64_R1
1342 config SYS_HAS_CPU_MIPS64_R2
1345 config SYS_HAS_CPU_R3000
1348 config SYS_HAS_CPU_TX39XX
1351 config SYS_HAS_CPU_VR41XX
1354 config SYS_HAS_CPU_R4300
1357 config SYS_HAS_CPU_R4X00
1360 config SYS_HAS_CPU_TX49XX
1363 config SYS_HAS_CPU_R5000
1366 config SYS_HAS_CPU_R5432
1369 config SYS_HAS_CPU_R6000
1372 config SYS_HAS_CPU_NEVADA
1375 config SYS_HAS_CPU_R8000
1378 config SYS_HAS_CPU_R10000
1381 config SYS_HAS_CPU_RM7000
1384 config SYS_HAS_CPU_RM9000
1387 config SYS_HAS_CPU_SB1
1390 config WEAK_ORDERING
1395 # These two indicate any level of the MIPS32 and MIPS64 architecture
1399 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1403 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1406 # These two indicate the revision of the architecture, either Release 1 or Release 2
1410 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1414 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1416 config SYS_SUPPORTS_32BIT_KERNEL
1418 config SYS_SUPPORTS_64BIT_KERNEL
1420 config CPU_SUPPORTS_32BIT_KERNEL
1422 config CPU_SUPPORTS_64BIT_KERNEL
1429 prompt "Kernel code model"
1431 You should only select this option if you have a workload that
1432 actually benefits from 64-bit processing or if your machine has
1433 large memory. You will only be presented a single option in this
1434 menu if your system does not support both 32-bit and 64-bit kernels.
1437 bool "32-bit kernel"
1438 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1441 Select this option if you want to build a 32-bit kernel.
1443 bool "64-bit kernel"
1444 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1446 Select this option if you want to build a 64-bit kernel.
1451 prompt "Kernel page size"
1452 default PAGE_SIZE_4KB
1454 config PAGE_SIZE_4KB
1457 This option select the standard 4kB Linux page size. On some
1458 R3000-family processors this is the only available page size. Using
1459 4kB page size will minimize memory consumption and is therefore
1460 recommended for low memory systems.
1462 config PAGE_SIZE_8KB
1464 depends on EXPERIMENTAL && CPU_R8000
1466 Using 8kB page size will result in higher performance kernel at
1467 the price of higher memory consumption. This option is available
1468 only on the R8000 processor. Not that at the time of this writing
1469 this option is still high experimental; there are also issues with
1470 compatibility of user applications.
1472 config PAGE_SIZE_16KB
1474 depends on !CPU_R3000 && !CPU_TX39XX
1476 Using 16kB page size will result in higher performance kernel at
1477 the price of higher memory consumption. This option is available on
1478 all non-R3000 family processors. Note that you will need a suitable
1479 Linux distribution to support this.
1481 config PAGE_SIZE_64KB
1483 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1485 Using 64kB page size will result in higher performance kernel at
1486 the price of higher memory consumption. This option is available on
1487 all non-R3000 family processor. Not that at the time of this
1488 writing this option is still high experimental.
1495 config IP22_CPU_SCACHE
1500 # Support for a MIPS32 / MIPS64 style S-caches
1502 config MIPS_CPU_SCACHE
1506 config R5000_CPU_SCACHE
1510 config RM7000_CPU_SCACHE
1514 config SIBYTE_DMA_PAGEOPS
1515 bool "Use DMA to clear/copy pages"
1518 Instead of using the CPU to zero and copy pages, use a Data Mover
1519 channel. These DMA channels are otherwise unused by the standard
1520 SiByte Linux port. Seems to give a small performance benefit.
1522 config CPU_HAS_PREFETCH
1526 prompt "MIPS MT options"
1528 config MIPS_MT_DISABLED
1529 bool "Disable multithreading support."
1531 Use this option if your workload can't take advantage of
1532 MIPS hardware multithreading support. On systems that don't have
1533 the option of an MT-enabled processor this option will be the only
1534 option in this menu.
1537 bool "Use 1 TC on each available VPE for SMP"
1538 depends on SYS_SUPPORTS_MULTITHREADING
1539 select CPU_MIPSR2_IRQ_VI
1540 select CPU_MIPSR2_SRS
1543 select SYS_SUPPORTS_SMP
1545 This is a kernel model which is also known a VSMP or lately
1546 has been marketesed into SMVP.
1549 bool "SMTC: Use all TCs on all VPEs for SMP"
1550 depends on CPU_MIPS32_R2
1551 #depends on CPU_MIPS64_R2 # once there is hardware ...
1552 depends on SYS_SUPPORTS_MULTITHREADING
1553 select CPU_MIPSR2_IRQ_VI
1554 select CPU_MIPSR2_SRS
1556 select NR_CPUS_DEFAULT_2
1557 select NR_CPUS_DEFAULT_8
1559 select SYS_SUPPORTS_SMP
1561 This is a kernel model which is known a SMTC or lately has been
1562 marketesed into SMVP.
1564 config MIPS_VPE_LOADER
1565 bool "VPE loader support."
1566 depends on SYS_SUPPORTS_MULTITHREADING
1569 Includes a loader for loading an elf relocatable object
1570 onto another VPE and running it.
1577 config SYS_SUPPORTS_MULTITHREADING
1580 config MIPS_MT_FPAFF
1581 bool "Dynamic FPU affinity for FP-intensive threads"
1585 config MIPS_MT_SMTC_INSTANT_REPLAY
1586 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1587 depends on MIPS_MT_SMTC
1590 SMTC pseudo-interrupts between TCs are deferred and queued
1591 if the target TC is interrupt-inhibited (IXMT). In the first
1592 SMTC prototypes, these queued IPIs were serviced on return
1593 to user mode, or on entry into the kernel idle loop. The
1594 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1595 processing, which adds runtime overhead (hence the option to turn
1596 it off), but ensures that IPIs are handled promptly even under
1597 heavy I/O interrupt load.
1599 config MIPS_VPE_LOADER_TOM
1600 bool "Load VPE program into memory hidden from linux"
1601 depends on MIPS_VPE_LOADER
1604 The loader can use memory that is present but has been hidden from
1605 Linux using the kernel command line option "mem=xxMB". It's up to
1606 you to ensure the amount you put in the option and the space your
1607 program requires is less or equal to the amount physically present.
1609 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1610 config MIPS_VPE_APSP_API
1611 bool "Enable support for AP/SP API (RTLX)"
1612 depends on MIPS_VPE_LOADER
1615 config MIPS_APSP_KSPD
1617 depends on MIPS_VPE_APSP_API
1620 KSPD is a kernel daemon that accepts syscall requests from the SP
1621 side, actions them and returns the results. It also handles the
1622 "exit" syscall notifying other kernel modules the SP program is
1623 exiting. You probably want to say yes here.
1625 config SB1_PASS_1_WORKAROUNDS
1627 depends on CPU_SB1_PASS_1
1630 config SB1_PASS_2_WORKAROUNDS
1632 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1635 config SB1_PASS_2_1_WORKAROUNDS
1637 depends on CPU_SB1 && CPU_SB1_PASS_2
1640 config 64BIT_PHYS_ADDR
1641 bool "Support for 64-bit physical address space"
1642 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1647 config CPU_HAS_SMARTMIPS
1648 depends on SYS_SUPPORTS_SMARTMIPS
1649 bool "Support for the SmartMIPS ASE"
1651 SmartMIPS is a extension of the MIPS32 architecture aimed at
1652 increased security at both hardware and software level for
1653 smartcards. Enabling this option will allow proper use of the
1654 SmartMIPS instructions by Linux applications. However a kernel with
1655 this option will not work on a MIPS core without SmartMIPS core. If
1656 you don't know you probably don't have SmartMIPS and should say N
1663 # Vectored interrupt mode is an R2 feature
1665 config CPU_MIPSR2_IRQ_VI
1669 # Extended interrupt mode is an R2 feature
1671 config CPU_MIPSR2_IRQ_EI
1675 # Shadow registers are an R2 feature
1677 config CPU_MIPSR2_SRS
1682 depends on !CPU_R3000
1686 # Use the generic interrupt handling code in kernel/irq/:
1688 config GENERIC_HARDIRQS
1692 config GENERIC_IRQ_PROBE
1700 # - Highmem only makes sense for the 32-bit kernel.
1701 # - The current highmem code will only work properly on physically indexed
1702 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1703 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1704 # moment we protect the user and offer the highmem option only on machines
1705 # where it's known to be safe. This will not offer highmem on a few systems
1706 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1707 # indexed CPUs but we're playing safe.
1708 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1709 # know they might have memory configurations that could make use of highmem
1713 bool "High Memory Support"
1714 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1716 config CPU_SUPPORTS_HIGHMEM
1719 config SYS_SUPPORTS_HIGHMEM
1722 config SYS_SUPPORTS_SMARTMIPS
1725 config ARCH_FLATMEM_ENABLE
1729 config ARCH_DISCONTIGMEM_ENABLE
1731 default y if SGI_IP27
1733 Say Y to upport efficient handling of discontiguous physical memory,
1734 for architectures which are either NUMA (Non-Uniform Memory Access)
1735 or have huge holes in the physical address space for other reasons.
1736 See <file:Documentation/vm/numa> for more.
1738 config ARCH_SPARSEMEM_ENABLE
1740 select SPARSEMEM_STATIC
1744 depends on SYS_SUPPORTS_NUMA
1746 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1747 Access). This option improves performance on systems with more
1748 than two nodes; on two node systems it is generally better to
1749 leave it disabled; on single node systems disable this option
1752 config SYS_SUPPORTS_NUMA
1758 depends on NEED_MULTIPLE_NODES
1763 bool "Multi-Processing support"
1764 depends on SYS_SUPPORTS_SMP
1767 This enables support for systems with more than one CPU. If you have
1768 a system with only one CPU, like most personal computers, say N. If
1769 you have a system with more than one CPU, say Y.
1771 If you say N here, the kernel will run on single and multiprocessor
1772 machines, but will use only one CPU of a multiprocessor machine. If
1773 you say Y here, the kernel will run on many, but not all,
1774 singleprocessor machines. On a singleprocessor machine, the kernel
1775 will run faster if you say N here.
1777 People using multiprocessor machines who say Y here should also say
1778 Y to "Enhanced Real Time Clock Support", below.
1780 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1781 available at <http://www.tldp.org/docs.html#howto>.
1783 If you don't know what to do here, say N.
1785 config SYS_SUPPORTS_SMP
1788 config NR_CPUS_DEFAULT_2
1791 config NR_CPUS_DEFAULT_4
1794 config NR_CPUS_DEFAULT_8
1797 config NR_CPUS_DEFAULT_16
1800 config NR_CPUS_DEFAULT_32
1803 config NR_CPUS_DEFAULT_64
1807 int "Maximum number of CPUs (2-64)"
1810 default "2" if NR_CPUS_DEFAULT_2
1811 default "4" if NR_CPUS_DEFAULT_4
1812 default "8" if NR_CPUS_DEFAULT_8
1813 default "16" if NR_CPUS_DEFAULT_16
1814 default "32" if NR_CPUS_DEFAULT_32
1815 default "64" if NR_CPUS_DEFAULT_64
1817 This allows you to specify the maximum number of CPUs which this
1818 kernel will support. The maximum supported value is 32 for 32-bit
1819 kernel and 64 for 64-bit kernels; the minimum value which makes
1822 This is purely to save memory - each supported CPU adds
1823 approximately eight kilobytes to the kernel image.
1826 # Timer Interrupt Frequency Configuration
1830 prompt "Timer frequency"
1833 Allows the configuration of the timer frequency.
1836 bool "48 HZ" if SYS_SUPPORTS_48HZ
1839 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1842 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1845 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1848 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1851 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1854 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1858 config SYS_SUPPORTS_48HZ
1861 config SYS_SUPPORTS_100HZ
1864 config SYS_SUPPORTS_128HZ
1867 config SYS_SUPPORTS_250HZ
1870 config SYS_SUPPORTS_256HZ
1873 config SYS_SUPPORTS_1000HZ
1876 config SYS_SUPPORTS_1024HZ
1879 config SYS_SUPPORTS_ARBIT_HZ
1881 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1882 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1883 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1884 !SYS_SUPPORTS_1024HZ
1889 default 100 if HZ_100
1890 default 128 if HZ_128
1891 default 250 if HZ_250
1892 default 256 if HZ_256
1893 default 1000 if HZ_1000
1894 default 1024 if HZ_1024
1896 source "kernel/Kconfig.preempt"
1899 bool "DS1742 BRAM/RTC support"
1900 depends on TOSHIBA_JMR3927 || TOSHIBA_RBTX4927
1902 config MIPS_INSANE_LARGE
1903 bool "Support for large 64-bit configurations"
1904 depends on CPU_R10000 && 64BIT
1906 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1907 previous 64-bit processors which only supported 40 bit / 1TB. If you
1908 need processes of more than 1TB virtual address space, say Y here.
1909 This will result in additional memory usage, so it is not
1910 recommended for normal users.
1913 bool "Kexec system call (EXPERIMENTAL)"
1914 depends on EXPERIMENTAL
1916 kexec is a system call that implements the ability to shutdown your
1917 current kernel, and to start another kernel. It is like a reboot
1918 but it is indepedent of the system firmware. And like a reboot
1919 you can start any kernel with it, not just Linux.
1921 The name comes from the similiarity to the exec system call.
1923 It is an ongoing process to be certain the hardware in a machine
1924 is properly shutdown, so do not be surprised if this code does not
1925 initially work for you. It may help to enable device hotplugging
1926 support. As of this writing the exact hardware interface is
1927 strongly in flux, so no good recommendation can be made.
1930 bool "Enable seccomp to safely compute untrusted bytecode"
1931 depends on PROC_FS && BROKEN
1934 This kernel feature is useful for number crunching applications
1935 that may need to compute untrusted bytecode during their
1936 execution. By using pipes or other transports made available to
1937 the process as file descriptors supporting the read/write
1938 syscalls, it's possible to isolate those applications in
1939 their own address space using seccomp. Once seccomp is
1940 enabled via /proc/<pid>/seccomp, it cannot be disabled
1941 and the task is only allowed to execute a few safe syscalls
1942 defined by each seccomp mode.
1944 If unsure, say Y. Only embedded should say N here.
1948 config RWSEM_GENERIC_SPINLOCK
1952 config LOCKDEP_SUPPORT
1956 config STACKTRACE_SUPPORT
1960 source "init/Kconfig"
1962 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1970 bool "Support for PCI controller"
1971 depends on HW_HAS_PCI
1973 Find out whether you have a PCI motherboard. PCI is the name of a
1974 bus system, i.e. the way the CPU talks to the other stuff inside
1975 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1978 The PCI-HOWTO, available from
1979 <http://www.tldp.org/docs.html#howto>, contains valuable
1980 information about which PCI hardware does work under Linux and which
1987 source "drivers/pci/Kconfig"
1990 # ISA support is now enabled via select. Too many systems still have the one
1991 # or other ISA chip on the board that users don't know about so don't expect
1992 # users to choose the right thing ...
1999 depends on HW_HAS_EISA
2001 select GENERIC_ISA_DMA
2003 The Extended Industry Standard Architecture (EISA) bus was
2004 developed as an open alternative to the IBM MicroChannel bus.
2006 The EISA bus provided some of the features of the IBM MicroChannel
2007 bus while maintaining backward compatibility with cards made for
2008 the older ISA bus. The EISA bus saw limited use between 1988 and
2009 1995 when it was made obsolete by the PCI bus.
2011 Say Y here if you are building a kernel for an EISA-based machine.
2015 source "drivers/eisa/Kconfig"
2018 bool "TURBOchannel support"
2019 depends on MACH_DECSTATION
2021 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2022 processors. Documentation on writing device drivers for TurboChannel
2024 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2027 # bool "Access.Bus support"
2037 source "drivers/pcmcia/Kconfig"
2039 source "drivers/pci/hotplug/Kconfig"
2043 menu "Executable file formats"
2045 source "fs/Kconfig.binfmt"
2051 bool "Use 64-bit ELF format for building"
2054 A 64-bit kernel is usually built using the 64-bit ELF binary object
2055 format as it's one that allows arbitrary 64-bit constructs. For
2056 kernels that are loaded within the KSEG compatibility segments the
2057 32-bit ELF format can optionally be used resulting in a somewhat
2058 smaller binary, but this option is not explicitly supported by the
2059 toolchain and since binutils 2.14 it does not even work at all.
2061 Say Y to use the 64-bit format or N to use the 32-bit one.
2066 bool "Include IRIX binary compatibility"
2067 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2069 config MIPS32_COMPAT
2070 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2073 Select this option if you want Linux/MIPS 32-bit binary
2074 compatibility. Since all software available for Linux/MIPS is
2075 currently 32-bit you should say Y here.
2079 depends on MIPS32_COMPAT
2082 config SYSVIPC_COMPAT
2084 depends on COMPAT && SYSVIPC
2088 bool "Kernel support for o32 binaries"
2089 depends on MIPS32_COMPAT
2091 Select this option if you want to run o32 binaries. These are pure
2092 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2093 existing binaries are in this format.
2098 bool "Kernel support for n32 binaries"
2099 depends on MIPS32_COMPAT
2101 Select this option if you want to run n32 binaries. These are
2102 64-bit binaries using 32-bit quantities for addressing and certain
2103 data that would normally be 64-bit. They are used in special
2110 default y if MIPS32_O32 || MIPS32_N32
2114 menu "Power management options"
2116 source "kernel/power/Kconfig"
2120 source "net/Kconfig"
2122 source "drivers/Kconfig"
2126 source "arch/mips/oprofile/Kconfig"
2128 source "arch/mips/Kconfig.debug"
2130 source "security/Kconfig"
2132 source "crypto/Kconfig"
2134 source "lib/Kconfig"