4 # Horrible source of confusion. Die, die, die ...
8 mainmenu "Linux/MIPS Kernel Configuration"
10 menu "Machine selection"
20 bool "Alchemy processor based machines"
23 bool "Basler eXcite smart camera"
31 select SYS_HAS_CPU_RM9000
32 select SYS_SUPPORTS_32BIT_KERNEL
33 select SYS_SUPPORTS_BIG_ENDIAN
34 select SYS_SUPPORTS_KGDB
36 The eXcite is a smart camera platform manufactured by
37 Basler Vision Technologies AG.
39 config BASLER_EXCITE_PROTOTYPE
40 bool "Support for pre-release units"
41 depends on BASLER_EXCITE
44 Pre-series (prototype) units are different from later ones in
45 some ways. Select this option if you have one of these. Please
46 note that a kernel built with this option selected will not be
47 able to run on normal units.
50 bool "BCM47XX based boards"
52 select DMA_NONCOHERENT
55 select SYS_HAS_CPU_MIPS32_R1
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_LITTLE_ENDIAN
59 select SSB_DRIVER_MIPS
61 select SYS_HAS_EARLY_PRINTK
64 Support for BCM47XX based boards
70 select DMA_NONCOHERENT
76 select PCI_GT64XXX_PCI0
77 select SYS_HAS_CPU_NEVADA
78 select SYS_HAS_EARLY_PRINTK
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select GENERIC_HARDIRQS_NO__DO_IRQ
84 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
120 select GENERIC_ISA_DMA
126 select SYS_HAS_CPU_R4X00
127 select SYS_SUPPORTS_32BIT_KERNEL
128 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
129 select SYS_SUPPORTS_100HZ
130 select GENERIC_HARDIRQS_NO__DO_IRQ
132 This a family of machines based on the MIPS R4030 chipset which was
133 used by several vendors to build RISC/os and Windows NT workstations.
134 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
135 Olivetti M700-10 workstations.
138 bool "LASAT Networks platforms"
140 select DMA_NONCOHERENT
141 select SYS_HAS_EARLY_PRINTK
144 select PCI_GT64XXX_PCI0
146 select R5000_CPU_SCACHE
147 select SYS_HAS_CPU_R5000
148 select SYS_SUPPORTS_32BIT_KERNEL
149 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
150 select SYS_SUPPORTS_LITTLE_ENDIAN
151 select GENERIC_HARDIRQS_NO__DO_IRQ
154 bool "Lemote Fulong mini-PC"
155 select ARCH_SPARSEMEM_ENABLE
157 select SYS_HAS_CPU_LOONGSON2
158 select DMA_NONCOHERENT
161 select HAVE_STD_PC_SERIAL_PORT
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL
168 select SYS_SUPPORTS_LITTLE_ENDIAN
169 select SYS_SUPPORTS_HIGHMEM
170 select SYS_HAS_EARLY_PRINTK
171 select GENERIC_HARDIRQS_NO__DO_IRQ
172 select GENERIC_ISA_DMA_SUPPORT_BROKEN
175 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
179 bool "MIPS Atlas board"
182 select DMA_NONCOHERENT
183 select SYS_HAS_EARLY_PRINTK
186 select MIPS_BOARDS_GEN
188 select PCI_GT64XXX_PCI0
190 select RM7000_CPU_SCACHE
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_SUPPORTS_32BIT_KERNEL
198 select SYS_SUPPORTS_64BIT_KERNEL
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_LITTLE_ENDIAN
201 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
202 select SYS_SUPPORTS_SMARTMIPS
203 select GENERIC_HARDIRQS_NO__DO_IRQ
205 This enables support for the MIPS Technologies Atlas evaluation
209 bool "MIPS Malta board"
210 select ARCH_MAY_HAVE_PC_FDC
213 select DMA_NONCOHERENT
214 select GENERIC_ISA_DMA
219 select MIPS_BOARDS_GEN
221 select MIPS_CPU_SCACHE
222 select PCI_GT64XXX_PCI0
225 select SYS_HAS_CPU_MIPS32_R1
226 select SYS_HAS_CPU_MIPS32_R2
227 select SYS_HAS_CPU_MIPS64_R1
228 select SYS_HAS_CPU_NEVADA
229 select SYS_HAS_CPU_RM7000
230 select SYS_HAS_EARLY_PRINTK
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_64BIT_KERNEL
233 select SYS_SUPPORTS_BIG_ENDIAN
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select SYS_SUPPORTS_MULTITHREADING
236 select SYS_SUPPORTS_SMARTMIPS
238 This enables support for the MIPS Technologies Malta evaluation
242 bool "MIPS SEAD board"
245 select DMA_NONCOHERENT
246 select SYS_HAS_EARLY_PRINTK
247 select MIPS_BOARDS_GEN
248 select SYS_HAS_CPU_MIPS32_R1
249 select SYS_HAS_CPU_MIPS32_R2
250 select SYS_HAS_CPU_MIPS64_R1
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
253 select SYS_SUPPORTS_BIG_ENDIAN
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_SMARTMIPS
257 This enables support for the MIPS Technologies SEAD evaluation
261 bool 'MIPS simulator (MIPSsim)'
263 select DMA_NONCOHERENT
264 select SYS_HAS_EARLY_PRINTK
267 select SYS_HAS_CPU_MIPS32_R1
268 select SYS_HAS_CPU_MIPS32_R2
269 select SYS_HAS_EARLY_PRINTK
270 select SYS_SUPPORTS_32BIT_KERNEL
271 select SYS_SUPPORTS_BIG_ENDIAN
272 select SYS_SUPPORTS_MULTITHREADING
273 select SYS_SUPPORTS_LITTLE_ENDIAN
275 This option enables support for MIPS Technologies MIPSsim software
279 bool "NEC EMMA2RH Mark-eins"
281 select DMA_NONCOHERENT
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_SUPPORTS_LITTLE_ENDIAN
288 select SYS_HAS_CPU_R5000
290 This enables support for the R5432-based NEC Mark-eins
291 boards with R5500 CPU.
294 bool "NEC VR4100 series based machines"
296 select SYS_HAS_CPU_VR41XX
297 select GENERIC_HARDIRQS_NO__DO_IRQ
300 bool "Philips PNX8550 based JBS board"
302 select SYS_SUPPORTS_LITTLE_ENDIAN
304 config PNX8550_STB810
305 bool "Philips PNX8550 based STB810 board"
307 select SYS_SUPPORTS_LITTLE_ENDIAN
310 bool "PMC-Sierra MSP chipsets"
311 depends on EXPERIMENTAL
312 select DMA_NONCOHERENT
314 select NO_EXCEPT_FILL
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_BIG_ENDIAN
320 select SYS_SUPPORTS_KGDB
323 select SERIAL_8250_CONSOLE
325 This adds support for the PMC-Sierra family of Multi-Service
326 Processor System-On-A-Chips. These parts include a number
327 of integrated peripherals, interfaces and DSPs in addition to
328 a variety of MIPS cores.
331 bool "PMC-Sierra Yosemite eval board"
339 select SYS_HAS_CPU_RM9000
340 select SYS_HAS_EARLY_PRINTK
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_BIG_ENDIAN
344 select SYS_SUPPORTS_HIGHMEM
345 select SYS_SUPPORTS_KGDB
346 select SYS_SUPPORTS_SMP
348 Yosemite is an evaluation board for the RM9000x2 processor
349 manufactured by PMC-Sierra.
355 select GENERIC_ISA_DMA
356 select HAVE_STD_PC_SERIAL_PORT
363 select SYS_HAS_CPU_MIPS32_R1
364 select SYS_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
366 select SYS_SUPPORTS_LITTLE_ENDIAN
367 select ARCH_SPARSEMEM_ENABLE
368 select GENERIC_HARDIRQS_NO__DO_IRQ
369 select NR_CPUS_DEFAULT_1
370 select SYS_SUPPORTS_SMP
372 Qemu is a software emulator which among other architectures also
373 can simulate a MIPS32 4Kc system. This patch adds support for the
374 system architecture that currently is being simulated by Qemu. It
375 will eventually be removed again when Qemu has the capability to
376 simulate actual MIPS hardware platforms. More information on Qemu
377 can be found at http://www.linux-mips.org/wiki/Qemu.
380 bool "SGI IP22 (Indy/Indigo2)"
385 select DMA_NONCOHERENT
388 select IP22_CPU_SCACHE
390 select GENERIC_ISA_DMA_SUPPORT_BROKEN
392 select SYS_HAS_CPU_R4X00
393 select SYS_HAS_CPU_R5000
394 select SYS_HAS_EARLY_PRINTK
395 select SYS_SUPPORTS_32BIT_KERNEL
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
399 This are the SGI Indy, Challenge S and Indigo2, as well as certain
400 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
401 that runs on these, say Y here.
404 bool "SGI IP27 (Origin200/2000)"
409 select SYS_HAS_EARLY_PRINTK
411 select NR_CPUS_DEFAULT_64
412 select SYS_HAS_CPU_R10000
413 select SYS_SUPPORTS_64BIT_KERNEL
414 select SYS_SUPPORTS_BIG_ENDIAN
415 select SYS_SUPPORTS_KGDB
416 select SYS_SUPPORTS_NUMA
417 select SYS_SUPPORTS_SMP
418 select GENERIC_HARDIRQS_NO__DO_IRQ
420 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
421 workstations. To compile a Linux kernel that runs on these, say Y
430 select DMA_NONCOHERENT
433 select R5000_CPU_SCACHE
434 select RM7000_CPU_SCACHE
435 select SYS_HAS_CPU_R5000
436 select SYS_HAS_CPU_R10000 if BROKEN
437 select SYS_HAS_CPU_RM7000
438 select SYS_HAS_CPU_NEVADA
439 select SYS_SUPPORTS_64BIT_KERNEL
440 select SYS_SUPPORTS_BIG_ENDIAN
442 If you want this kernel to run on SGI O2 workstation, say Y here.
445 bool "Sibyte BCM91120C-CRhine"
446 depends on EXPERIMENTAL
449 select SIBYTE_BCM1120
451 select SYS_HAS_CPU_SB1
452 select SYS_SUPPORTS_BIG_ENDIAN
453 select SYS_SUPPORTS_LITTLE_ENDIAN
456 bool "Sibyte BCM91120x-Carmel"
457 depends on EXPERIMENTAL
460 select SIBYTE_BCM1120
462 select SYS_HAS_CPU_SB1
463 select SYS_SUPPORTS_BIG_ENDIAN
464 select SYS_SUPPORTS_LITTLE_ENDIAN
467 bool "Sibyte BCM91125C-CRhone"
468 depends on EXPERIMENTAL
471 select SIBYTE_BCM1125
473 select SYS_HAS_CPU_SB1
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_HIGHMEM
476 select SYS_SUPPORTS_LITTLE_ENDIAN
479 bool "Sibyte BCM91125E-Rhone"
480 depends on EXPERIMENTAL
483 select SIBYTE_BCM1125H
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_LITTLE_ENDIAN
490 bool "Sibyte BCM91250A-SWARM"
493 select NR_CPUS_DEFAULT_2
496 select SYS_HAS_CPU_SB1
497 select SYS_SUPPORTS_BIG_ENDIAN
498 select SYS_SUPPORTS_HIGHMEM
499 select SYS_SUPPORTS_KGDB
500 select SYS_SUPPORTS_LITTLE_ENDIAN
502 config SIBYTE_LITTLESUR
503 bool "Sibyte BCM91250C2-LittleSur"
504 depends on EXPERIMENTAL
507 select NR_CPUS_DEFAULT_2
510 select SYS_HAS_CPU_SB1
511 select SYS_SUPPORTS_BIG_ENDIAN
512 select SYS_SUPPORTS_HIGHMEM
513 select SYS_SUPPORTS_LITTLE_ENDIAN
515 config SIBYTE_SENTOSA
516 bool "Sibyte BCM91250E-Sentosa"
517 depends on EXPERIMENTAL
520 select NR_CPUS_DEFAULT_2
523 select SYS_HAS_CPU_SB1
524 select SYS_SUPPORTS_BIG_ENDIAN
525 select SYS_SUPPORTS_LITTLE_ENDIAN
527 config SIBYTE_PTSWARM
528 bool "Sibyte BCM91250PT-PTSWARM"
529 depends on EXPERIMENTAL
532 select NR_CPUS_DEFAULT_2
535 select SYS_HAS_CPU_SB1
536 select SYS_SUPPORTS_BIG_ENDIAN
537 select SYS_SUPPORTS_HIGHMEM
538 select SYS_SUPPORTS_LITTLE_ENDIAN
541 bool "Sibyte BCM91480B-BigSur"
544 select NR_CPUS_DEFAULT_4
545 select SIBYTE_BCM1x80
547 select SYS_HAS_CPU_SB1
548 select SYS_SUPPORTS_BIG_ENDIAN
549 select SYS_SUPPORTS_HIGHMEM
550 select SYS_SUPPORTS_LITTLE_ENDIAN
553 bool "SNI RM200/300/400"
554 select ARC if CPU_LITTLE_ENDIAN
555 select ARC32 if CPU_LITTLE_ENDIAN
556 select ARCH_MAY_HAVE_PC_FDC
559 select DMA_NONCOHERENT
560 select GENERIC_ISA_DMA
568 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
569 select SYS_HAS_CPU_R4X00
570 select SYS_HAS_CPU_R5000
571 select SYS_HAS_CPU_R10000
572 select R5000_CPU_SCACHE
573 select SYS_HAS_EARLY_PRINTK
574 select SYS_SUPPORTS_32BIT_KERNEL
575 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
576 select SYS_SUPPORTS_BIG_ENDIAN
577 select SYS_SUPPORTS_HIGHMEM
578 select SYS_SUPPORTS_LITTLE_ENDIAN
580 The SNI RM200/300/400 are MIPS-based machines manufactured by
581 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
582 Technology and now in turn merged with Fujitsu. Say Y here to
583 support this machine type.
585 config TOSHIBA_JMR3927
586 bool "Toshiba JMR-TX3927 board"
588 select DMA_NONCOHERENT
593 select SYS_HAS_CPU_TX39XX
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_LITTLE_ENDIAN
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select GENERIC_HARDIRQS_NO__DO_IRQ
599 config TOSHIBA_RBTX4927
600 bool "Toshiba RBTX49[23]7 board"
603 select DMA_NONCOHERENT
604 select HAS_TXX9_SERIAL
608 select I8259 if TOSHIBA_FPCIB0
610 select SYS_HAS_CPU_TX49XX
611 select SYS_SUPPORTS_32BIT_KERNEL
612 select SYS_SUPPORTS_64BIT_KERNEL
613 select SYS_SUPPORTS_LITTLE_ENDIAN
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_KGDB
616 select GENERIC_HARDIRQS_NO__DO_IRQ
618 This Toshiba board is based on the TX4927 processor. Say Y here to
619 support this machine type
621 config TOSHIBA_RBTX4938
622 bool "Toshiba RBTX4938 board"
625 select DMA_NONCOHERENT
626 select HAS_TXX9_SERIAL
631 select SYS_HAS_CPU_TX49XX
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_LITTLE_ENDIAN
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_KGDB
636 select GENERIC_HARDIRQS_NO__DO_IRQ
639 This Toshiba board is based on the TX4938 processor. Say Y here to
640 support this machine type
643 bool "Wind River PPMC board"
647 select DMA_NONCOHERENT
649 select PCI_GT64XXX_PCI0
651 select SYS_HAS_CPU_MIPS32_R1
652 select SYS_HAS_CPU_MIPS32_R2
653 select SYS_HAS_CPU_MIPS64_R1
654 select SYS_HAS_CPU_NEVADA
655 select SYS_HAS_CPU_RM7000
656 select SYS_SUPPORTS_32BIT_KERNEL
657 select SYS_SUPPORTS_64BIT_KERNEL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_LITTLE_ENDIAN
661 This enables support for the Wind River MIPS32 4KC PPMC evaluation
662 board, which is based on GT64120 bridge chip.
666 source "arch/mips/au1000/Kconfig"
667 source "arch/mips/jazz/Kconfig"
668 source "arch/mips/lasat/Kconfig"
669 source "arch/mips/pmc-sierra/Kconfig"
670 source "arch/mips/sgi-ip27/Kconfig"
671 source "arch/mips/sibyte/Kconfig"
672 source "arch/mips/tx4927/Kconfig"
673 source "arch/mips/tx4938/Kconfig"
674 source "arch/mips/vr41xx/Kconfig"
678 config RWSEM_GENERIC_SPINLOCK
682 config RWSEM_XCHGADD_ALGORITHM
685 config ARCH_HAS_ILOG2_U32
689 config ARCH_HAS_ILOG2_U64
693 config GENERIC_FIND_NEXT_BIT
697 config GENERIC_HWEIGHT
701 config GENERIC_CALIBRATE_DELAY
705 config GENERIC_CLOCKEVENTS
713 config GENERIC_CMOS_UPDATE
717 config SCHED_NO_NO_OMIT_FRAME_POINTER
721 config GENERIC_HARDIRQS_NO__DO_IRQ
726 # Select some configuration options automatically based on user selections.
731 config ARCH_MAY_HAVE_PC_FDC
769 select DMA_NEED_PCI_MAP_STATE
771 config DMA_NONCOHERENT
773 select DMA_NEED_PCI_MAP_STATE
775 config DMA_NEED_PCI_MAP_STATE
779 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
780 depends on SYS_HAS_EARLY_PRINTK
783 This option enables special console drivers which allow the kernel
784 to print messages very early in the bootup process.
786 This is useful for kernel debugging when your machine crashes very
787 early before the console code is initialized. For normal operation,
788 it is not recommended because it looks ugly on some machines and
789 doesn't cooperate with an X server. You should normally say N here,
790 unless you want to debug such a crash.
792 config SYS_HAS_EARLY_PRINTK
811 config MIPS_DISABLE_OBSOLETE_IDE
817 config GENERIC_ISA_DMA
819 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
821 config GENERIC_ISA_DMA_SUPPORT_BROKEN
823 select GENERIC_ISA_DMA
829 # Endianess selection. Sufficiently obscure so many users don't know what to
830 # answer,so we try hard to limit the available choices. Also the use of a
831 # choice statement should be more obvious to the user.
834 prompt "Endianess selection"
836 Some MIPS machines can be configured for either little or big endian
837 byte order. These modes require different kernels and a different
838 Linux distribution. In general there is one preferred byteorder for a
839 particular system but some systems are just as commonly used in the
840 one or the other endianness.
842 config CPU_BIG_ENDIAN
844 depends on SYS_SUPPORTS_BIG_ENDIAN
846 config CPU_LITTLE_ENDIAN
848 depends on SYS_SUPPORTS_LITTLE_ENDIAN
853 config SYS_SUPPORTS_APM_EMULATION
856 config SYS_SUPPORTS_BIG_ENDIAN
859 config SYS_SUPPORTS_LITTLE_ENDIAN
883 config MIPS_BOARDS_GEN
886 config PCI_GT64XXX_PCI0
889 config NO_EXCEPT_FILL
894 select HAS_TXX9_SERIAL
906 select DMA_NONCOHERENT
908 select SYS_HAS_CPU_MIPS32_R1
909 select SYS_HAS_EARLY_PRINTK
910 select SYS_SUPPORTS_32BIT_KERNEL
911 select GENERIC_HARDIRQS_NO__DO_IRQ
912 select SYS_SUPPORTS_KGDB
932 config MIPS_L1_CACHE_SHIFT
934 default "4" if MACH_DECSTATION
935 default "7" if SGI_IP27 || SNI_RM
936 default "4" if PMC_MSP4200_EVAL
939 config HAVE_STD_PC_SERIAL_PORT
943 bool "ARC console support"
944 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
948 depends on MACH_JAZZ || SNI_RM || SGI_IP32
953 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
964 source "kernel/time/Kconfig"
972 depends on SYS_HAS_CPU_LOONGSON2
973 select CPU_SUPPORTS_32BIT_KERNEL
974 select CPU_SUPPORTS_64BIT_KERNEL
975 select CPU_SUPPORTS_HIGHMEM
977 The Loongson 2E processor implements the MIPS III instruction set
978 with many extensions.
981 bool "MIPS32 Release 1"
982 depends on SYS_HAS_CPU_MIPS32_R1
984 select CPU_HAS_PREFETCH
985 select CPU_SUPPORTS_32BIT_KERNEL
986 select CPU_SUPPORTS_HIGHMEM
988 Choose this option to build a kernel for release 1 or later of the
989 MIPS32 architecture. Most modern embedded systems with a 32-bit
990 MIPS processor are based on a MIPS32 processor. If you know the
991 specific type of processor in your system, choose those that one
992 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
993 Release 2 of the MIPS32 architecture is available since several
994 years so chances are you even have a MIPS32 Release 2 processor
995 in which case you should choose CPU_MIPS32_R2 instead for better
999 bool "MIPS32 Release 2"
1000 depends on SYS_HAS_CPU_MIPS32_R2
1002 select CPU_HAS_PREFETCH
1003 select CPU_SUPPORTS_32BIT_KERNEL
1004 select CPU_SUPPORTS_HIGHMEM
1006 Choose this option to build a kernel for release 2 or later of the
1007 MIPS32 architecture. Most modern embedded systems with a 32-bit
1008 MIPS processor are based on a MIPS32 processor. If you know the
1009 specific type of processor in your system, choose those that one
1010 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1012 config CPU_MIPS64_R1
1013 bool "MIPS64 Release 1"
1014 depends on SYS_HAS_CPU_MIPS64_R1
1016 select CPU_HAS_PREFETCH
1017 select CPU_SUPPORTS_32BIT_KERNEL
1018 select CPU_SUPPORTS_64BIT_KERNEL
1019 select CPU_SUPPORTS_HIGHMEM
1021 Choose this option to build a kernel for release 1 or later of the
1022 MIPS64 architecture. Many modern embedded systems with a 64-bit
1023 MIPS processor are based on a MIPS64 processor. If you know the
1024 specific type of processor in your system, choose those that one
1025 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1026 Release 2 of the MIPS64 architecture is available since several
1027 years so chances are you even have a MIPS64 Release 2 processor
1028 in which case you should choose CPU_MIPS64_R2 instead for better
1031 config CPU_MIPS64_R2
1032 bool "MIPS64 Release 2"
1033 depends on SYS_HAS_CPU_MIPS64_R2
1035 select CPU_HAS_PREFETCH
1036 select CPU_SUPPORTS_32BIT_KERNEL
1037 select CPU_SUPPORTS_64BIT_KERNEL
1038 select CPU_SUPPORTS_HIGHMEM
1040 Choose this option to build a kernel for release 2 or later of the
1041 MIPS64 architecture. Many modern embedded systems with a 64-bit
1042 MIPS processor are based on a MIPS64 processor. If you know the
1043 specific type of processor in your system, choose those that one
1044 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1048 depends on SYS_HAS_CPU_R3000
1050 select CPU_SUPPORTS_32BIT_KERNEL
1051 select CPU_SUPPORTS_HIGHMEM
1053 Please make sure to pick the right CPU type. Linux/MIPS is not
1054 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1055 *not* work on R4000 machines and vice versa. However, since most
1056 of the supported machines have an R4000 (or similar) CPU, R4x00
1057 might be a safe bet. If the resulting kernel does not work,
1058 try to recompile with R3000.
1062 depends on SYS_HAS_CPU_TX39XX
1063 select CPU_SUPPORTS_32BIT_KERNEL
1067 depends on SYS_HAS_CPU_VR41XX
1068 select CPU_SUPPORTS_32BIT_KERNEL
1069 select CPU_SUPPORTS_64BIT_KERNEL
1071 The options selects support for the NEC VR4100 series of processors.
1072 Only choose this option if you have one of these processors as a
1073 kernel built with this option will not run on any other type of
1074 processor or vice versa.
1078 depends on SYS_HAS_CPU_R4300
1080 select CPU_SUPPORTS_32BIT_KERNEL
1081 select CPU_SUPPORTS_64BIT_KERNEL
1083 MIPS Technologies R4300-series processors.
1087 depends on SYS_HAS_CPU_R4X00
1089 select CPU_SUPPORTS_32BIT_KERNEL
1090 select CPU_SUPPORTS_64BIT_KERNEL
1092 MIPS Technologies R4000-series processors other than 4300, including
1093 the R4000, R4400, R4600, and 4700.
1097 depends on SYS_HAS_CPU_TX49XX
1099 select CPU_HAS_PREFETCH
1100 select CPU_SUPPORTS_32BIT_KERNEL
1101 select CPU_SUPPORTS_64BIT_KERNEL
1105 depends on SYS_HAS_CPU_R5000
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_64BIT_KERNEL
1110 MIPS Technologies R5000-series processors other than the Nevada.
1114 depends on SYS_HAS_CPU_R5432
1116 select CPU_SUPPORTS_32BIT_KERNEL
1117 select CPU_SUPPORTS_64BIT_KERNEL
1121 depends on EXPERIMENTAL
1123 depends on SYS_HAS_CPU_R6000
1124 select CPU_SUPPORTS_32BIT_KERNEL
1126 MIPS Technologies R6000 and R6000A series processors. Note these
1127 processors are extremely rare and the support for them is incomplete.
1131 depends on SYS_HAS_CPU_NEVADA
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_64BIT_KERNEL
1136 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1140 depends on EXPERIMENTAL
1141 depends on SYS_HAS_CPU_R8000
1143 select CPU_HAS_PREFETCH
1144 select CPU_SUPPORTS_64BIT_KERNEL
1146 MIPS Technologies R8000 processors. Note these processors are
1147 uncommon and the support for them is incomplete.
1151 depends on SYS_HAS_CPU_R10000
1153 select CPU_HAS_PREFETCH
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_64BIT_KERNEL
1156 select CPU_SUPPORTS_HIGHMEM
1158 MIPS Technologies R10000-series processors.
1162 depends on SYS_HAS_CPU_RM7000
1164 select CPU_HAS_PREFETCH
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_64BIT_KERNEL
1167 select CPU_SUPPORTS_HIGHMEM
1171 depends on SYS_HAS_CPU_RM9000
1173 select CPU_HAS_PREFETCH
1174 select CPU_SUPPORTS_32BIT_KERNEL
1175 select CPU_SUPPORTS_64BIT_KERNEL
1176 select CPU_SUPPORTS_HIGHMEM
1177 select WEAK_ORDERING
1181 depends on SYS_HAS_CPU_SB1
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_64BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1186 select WEAK_ORDERING
1190 config SYS_HAS_CPU_LOONGSON2
1193 config SYS_HAS_CPU_MIPS32_R1
1196 config SYS_HAS_CPU_MIPS32_R2
1199 config SYS_HAS_CPU_MIPS64_R1
1202 config SYS_HAS_CPU_MIPS64_R2
1205 config SYS_HAS_CPU_R3000
1208 config SYS_HAS_CPU_TX39XX
1211 config SYS_HAS_CPU_VR41XX
1214 config SYS_HAS_CPU_R4300
1217 config SYS_HAS_CPU_R4X00
1220 config SYS_HAS_CPU_TX49XX
1223 config SYS_HAS_CPU_R5000
1226 config SYS_HAS_CPU_R5432
1229 config SYS_HAS_CPU_R6000
1232 config SYS_HAS_CPU_NEVADA
1235 config SYS_HAS_CPU_R8000
1238 config SYS_HAS_CPU_R10000
1241 config SYS_HAS_CPU_RM7000
1244 config SYS_HAS_CPU_RM9000
1247 config SYS_HAS_CPU_SB1
1251 # CPU may reorder R->R, R->W, W->R, W->W
1252 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1254 config WEAK_ORDERING
1258 # CPU may reorder reads and writes beyond LL/SC
1259 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1261 config WEAK_REORDERING_BEYOND_LLSC
1266 # These two indicate any level of the MIPS32 and MIPS64 architecture
1270 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1274 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1277 # These two indicate the revision of the architecture, either Release 1 or Release 2
1281 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1285 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1287 config SYS_SUPPORTS_32BIT_KERNEL
1289 config SYS_SUPPORTS_64BIT_KERNEL
1291 config CPU_SUPPORTS_32BIT_KERNEL
1293 config CPU_SUPPORTS_64BIT_KERNEL
1300 prompt "Kernel code model"
1302 You should only select this option if you have a workload that
1303 actually benefits from 64-bit processing or if your machine has
1304 large memory. You will only be presented a single option in this
1305 menu if your system does not support both 32-bit and 64-bit kernels.
1308 bool "32-bit kernel"
1309 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1312 Select this option if you want to build a 32-bit kernel.
1314 bool "64-bit kernel"
1315 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1317 Select this option if you want to build a 64-bit kernel.
1322 prompt "Kernel page size"
1323 default PAGE_SIZE_4KB
1325 config PAGE_SIZE_4KB
1328 This option select the standard 4kB Linux page size. On some
1329 R3000-family processors this is the only available page size. Using
1330 4kB page size will minimize memory consumption and is therefore
1331 recommended for low memory systems.
1333 config PAGE_SIZE_8KB
1335 depends on EXPERIMENTAL && CPU_R8000
1337 Using 8kB page size will result in higher performance kernel at
1338 the price of higher memory consumption. This option is available
1339 only on the R8000 processor. Not that at the time of this writing
1340 this option is still high experimental; there are also issues with
1341 compatibility of user applications.
1343 config PAGE_SIZE_16KB
1345 depends on !CPU_R3000 && !CPU_TX39XX
1347 Using 16kB page size will result in higher performance kernel at
1348 the price of higher memory consumption. This option is available on
1349 all non-R3000 family processors. Note that you will need a suitable
1350 Linux distribution to support this.
1352 config PAGE_SIZE_64KB
1354 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1356 Using 64kB page size will result in higher performance kernel at
1357 the price of higher memory consumption. This option is available on
1358 all non-R3000 family processor. Not that at the time of this
1359 writing this option is still high experimental.
1366 config IP22_CPU_SCACHE
1371 # Support for a MIPS32 / MIPS64 style S-caches
1373 config MIPS_CPU_SCACHE
1377 config R5000_CPU_SCACHE
1381 config RM7000_CPU_SCACHE
1385 config SIBYTE_DMA_PAGEOPS
1386 bool "Use DMA to clear/copy pages"
1389 Instead of using the CPU to zero and copy pages, use a Data Mover
1390 channel. These DMA channels are otherwise unused by the standard
1391 SiByte Linux port. Seems to give a small performance benefit.
1393 config CPU_HAS_PREFETCH
1397 prompt "MIPS MT options"
1399 config MIPS_MT_DISABLED
1400 bool "Disable multithreading support."
1402 Use this option if your workload can't take advantage of
1403 MIPS hardware multithreading support. On systems that don't have
1404 the option of an MT-enabled processor this option will be the only
1405 option in this menu.
1408 bool "Use 1 TC on each available VPE for SMP"
1409 depends on SYS_SUPPORTS_MULTITHREADING
1410 select CPU_MIPSR2_IRQ_VI
1411 select CPU_MIPSR2_IRQ_EI
1412 select CPU_MIPSR2_SRS
1414 select NR_CPUS_DEFAULT_2
1416 select SYS_SUPPORTS_SMP
1418 This is a kernel model which is also known a VSMP or lately
1419 has been marketesed into SMVP.
1422 bool "SMTC: Use all TCs on all VPEs for SMP"
1423 depends on CPU_MIPS32_R2
1424 #depends on CPU_MIPS64_R2 # once there is hardware ...
1425 depends on SYS_SUPPORTS_MULTITHREADING
1426 select GENERIC_CLOCKEVENTS_BROADCAST
1427 select CPU_MIPSR2_IRQ_VI
1428 select CPU_MIPSR2_IRQ_EI
1429 select CPU_MIPSR2_SRS
1431 select NR_CPUS_DEFAULT_8
1433 select SYS_SUPPORTS_SMP
1435 This is a kernel model which is known a SMTC or lately has been
1436 marketesed into SMVP.
1443 config SYS_SUPPORTS_MULTITHREADING
1446 config MIPS_MT_FPAFF
1447 bool "Dynamic FPU affinity for FP-intensive threads"
1449 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1451 config MIPS_VPE_LOADER
1452 bool "VPE loader support."
1453 depends on SYS_SUPPORTS_MULTITHREADING
1454 select CPU_MIPSR2_IRQ_VI
1455 select CPU_MIPSR2_IRQ_EI
1456 select CPU_MIPSR2_SRS
1459 Includes a loader for loading an elf relocatable object
1460 onto another VPE and running it.
1462 config MIPS_MT_SMTC_INSTANT_REPLAY
1463 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1464 depends on MIPS_MT_SMTC && !PREEMPT
1467 SMTC pseudo-interrupts between TCs are deferred and queued
1468 if the target TC is interrupt-inhibited (IXMT). In the first
1469 SMTC prototypes, these queued IPIs were serviced on return
1470 to user mode, or on entry into the kernel idle loop. The
1471 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1472 processing, which adds runtime overhead (hence the option to turn
1473 it off), but ensures that IPIs are handled promptly even under
1474 heavy I/O interrupt load.
1476 config MIPS_MT_SMTC_IM_BACKSTOP
1477 bool "Use per-TC register bits as backstop for inhibited IM bits"
1478 depends on MIPS_MT_SMTC
1481 To support multiple TC microthreads acting as "CPUs" within
1482 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1483 during interrupt handling. To support legacy drivers and interrupt
1484 controller management code, SMTC has a "backstop" to track and
1485 if necessary restore the interrupt mask. This has some performance
1486 impact on interrupt service overhead. Disable it only if you know
1489 config MIPS_MT_SMTC_IRQAFF
1490 bool "Support IRQ affinity API"
1491 depends on MIPS_MT_SMTC
1494 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1495 for SMTC Linux kernel. Requires platform support, of which
1496 an example can be found in the MIPS kernel i8259 and Malta
1497 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1498 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1499 interrupt dispatch, and should be used only if you know what
1502 config MIPS_VPE_LOADER_TOM
1503 bool "Load VPE program into memory hidden from linux"
1504 depends on MIPS_VPE_LOADER
1507 The loader can use memory that is present but has been hidden from
1508 Linux using the kernel command line option "mem=xxMB". It's up to
1509 you to ensure the amount you put in the option and the space your
1510 program requires is less or equal to the amount physically present.
1512 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1513 config MIPS_VPE_APSP_API
1514 bool "Enable support for AP/SP API (RTLX)"
1515 depends on MIPS_VPE_LOADER
1518 config MIPS_APSP_KSPD
1520 depends on MIPS_VPE_APSP_API
1523 KSPD is a kernel daemon that accepts syscall requests from the SP
1524 side, actions them and returns the results. It also handles the
1525 "exit" syscall notifying other kernel modules the SP program is
1526 exiting. You probably want to say yes here.
1528 config SB1_PASS_1_WORKAROUNDS
1530 depends on CPU_SB1_PASS_1
1533 config SB1_PASS_2_WORKAROUNDS
1535 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1538 config SB1_PASS_2_1_WORKAROUNDS
1540 depends on CPU_SB1 && CPU_SB1_PASS_2
1543 config 64BIT_PHYS_ADDR
1549 config CPU_HAS_SMARTMIPS
1550 depends on SYS_SUPPORTS_SMARTMIPS
1551 bool "Support for the SmartMIPS ASE"
1553 SmartMIPS is a extension of the MIPS32 architecture aimed at
1554 increased security at both hardware and software level for
1555 smartcards. Enabling this option will allow proper use of the
1556 SmartMIPS instructions by Linux applications. However a kernel with
1557 this option will not work on a MIPS core without SmartMIPS core. If
1558 you don't know you probably don't have SmartMIPS and should say N
1564 config 64BIT_CONTEXT
1565 bool "Save 64bit integer registers"
1566 depends on 32BIT && CPU_LOONGSON2
1568 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1569 registers can still be accessed as 64bit, mainly for multimedia
1570 instructions. We must have all 64bit save/restored to make sure
1571 those instructions to get correct result.
1574 # Vectored interrupt mode is an R2 feature
1576 config CPU_MIPSR2_IRQ_VI
1580 # Extended interrupt mode is an R2 feature
1582 config CPU_MIPSR2_IRQ_EI
1586 # Shadow registers are an R2 feature
1588 config CPU_MIPSR2_SRS
1593 depends on !CPU_R3000
1596 config GENERIC_CLOCKEVENTS_BROADCAST
1600 # Use the generic interrupt handling code in kernel/irq/:
1602 config GENERIC_HARDIRQS
1606 config GENERIC_IRQ_PROBE
1614 # - Highmem only makes sense for the 32-bit kernel.
1615 # - The current highmem code will only work properly on physically indexed
1616 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1617 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1618 # moment we protect the user and offer the highmem option only on machines
1619 # where it's known to be safe. This will not offer highmem on a few systems
1620 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1621 # indexed CPUs but we're playing safe.
1622 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1623 # know they might have memory configurations that could make use of highmem
1627 bool "High Memory Support"
1628 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1630 config CPU_SUPPORTS_HIGHMEM
1633 config SYS_SUPPORTS_HIGHMEM
1636 config SYS_SUPPORTS_SMARTMIPS
1639 config ARCH_FLATMEM_ENABLE
1643 config ARCH_DISCONTIGMEM_ENABLE
1645 default y if SGI_IP27
1647 Say Y to support efficient handling of discontiguous physical memory,
1648 for architectures which are either NUMA (Non-Uniform Memory Access)
1649 or have huge holes in the physical address space for other reasons.
1650 See <file:Documentation/vm/numa> for more.
1652 config ARCH_SPARSEMEM_ENABLE
1654 select SPARSEMEM_STATIC
1658 depends on SYS_SUPPORTS_NUMA
1660 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1661 Access). This option improves performance on systems with more
1662 than two nodes; on two node systems it is generally better to
1663 leave it disabled; on single node systems disable this option
1666 config SYS_SUPPORTS_NUMA
1672 depends on NEED_MULTIPLE_NODES
1677 bool "Multi-Processing support"
1678 depends on SYS_SUPPORTS_SMP
1681 This enables support for systems with more than one CPU. If you have
1682 a system with only one CPU, like most personal computers, say N. If
1683 you have a system with more than one CPU, say Y.
1685 If you say N here, the kernel will run on single and multiprocessor
1686 machines, but will use only one CPU of a multiprocessor machine. If
1687 you say Y here, the kernel will run on many, but not all,
1688 singleprocessor machines. On a singleprocessor machine, the kernel
1689 will run faster if you say N here.
1691 People using multiprocessor machines who say Y here should also say
1692 Y to "Enhanced Real Time Clock Support", below.
1694 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1695 available at <http://www.tldp.org/docs.html#howto>.
1697 If you don't know what to do here, say N.
1699 config SYS_SUPPORTS_SMP
1702 config NR_CPUS_DEFAULT_1
1705 config NR_CPUS_DEFAULT_2
1708 config NR_CPUS_DEFAULT_4
1711 config NR_CPUS_DEFAULT_8
1714 config NR_CPUS_DEFAULT_16
1717 config NR_CPUS_DEFAULT_32
1720 config NR_CPUS_DEFAULT_64
1724 int "Maximum number of CPUs (2-64)"
1725 range 1 64 if NR_CPUS_DEFAULT_1
1727 default "1" if NR_CPUS_DEFAULT_1
1728 default "2" if NR_CPUS_DEFAULT_2
1729 default "4" if NR_CPUS_DEFAULT_4
1730 default "8" if NR_CPUS_DEFAULT_8
1731 default "16" if NR_CPUS_DEFAULT_16
1732 default "32" if NR_CPUS_DEFAULT_32
1733 default "64" if NR_CPUS_DEFAULT_64
1735 This allows you to specify the maximum number of CPUs which this
1736 kernel will support. The maximum supported value is 32 for 32-bit
1737 kernel and 64 for 64-bit kernels; the minimum value which makes
1738 sense is 1 for Qemu (useful only for kernel debugging purposes)
1739 and 2 for all others.
1741 This is purely to save memory - each supported CPU adds
1742 approximately eight kilobytes to the kernel image. For best
1743 performance should round up your number of processors to the next
1747 # Timer Interrupt Frequency Configuration
1751 prompt "Timer frequency"
1754 Allows the configuration of the timer frequency.
1757 bool "48 HZ" if SYS_SUPPORTS_48HZ
1760 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1763 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1766 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1769 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1772 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1775 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1779 config SYS_SUPPORTS_48HZ
1782 config SYS_SUPPORTS_100HZ
1785 config SYS_SUPPORTS_128HZ
1788 config SYS_SUPPORTS_250HZ
1791 config SYS_SUPPORTS_256HZ
1794 config SYS_SUPPORTS_1000HZ
1797 config SYS_SUPPORTS_1024HZ
1800 config SYS_SUPPORTS_ARBIT_HZ
1802 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1803 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1804 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1805 !SYS_SUPPORTS_1024HZ
1810 default 100 if HZ_100
1811 default 128 if HZ_128
1812 default 250 if HZ_250
1813 default 256 if HZ_256
1814 default 1000 if HZ_1000
1815 default 1024 if HZ_1024
1817 source "kernel/Kconfig.preempt"
1819 config MIPS_INSANE_LARGE
1820 bool "Support for large 64-bit configurations"
1821 depends on CPU_R10000 && 64BIT
1823 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1824 previous 64-bit processors which only supported 40 bit / 1TB. If you
1825 need processes of more than 1TB virtual address space, say Y here.
1826 This will result in additional memory usage, so it is not
1827 recommended for normal users.
1830 bool "Kexec system call (EXPERIMENTAL)"
1831 depends on EXPERIMENTAL
1833 kexec is a system call that implements the ability to shutdown your
1834 current kernel, and to start another kernel. It is like a reboot
1835 but it is independent of the system firmware. And like a reboot
1836 you can start any kernel with it, not just Linux.
1838 The name comes from the similarity to the exec system call.
1840 It is an ongoing process to be certain the hardware in a machine
1841 is properly shutdown, so do not be surprised if this code does not
1842 initially work for you. It may help to enable device hotplugging
1843 support. As of this writing the exact hardware interface is
1844 strongly in flux, so no good recommendation can be made.
1847 bool "Enable seccomp to safely compute untrusted bytecode"
1851 This kernel feature is useful for number crunching applications
1852 that may need to compute untrusted bytecode during their
1853 execution. By using pipes or other transports made available to
1854 the process as file descriptors supporting the read/write
1855 syscalls, it's possible to isolate those applications in
1856 their own address space using seccomp. Once seccomp is
1857 enabled via /proc/<pid>/seccomp, it cannot be disabled
1858 and the task is only allowed to execute a few safe syscalls
1859 defined by each seccomp mode.
1861 If unsure, say Y. Only embedded should say N here.
1865 config RWSEM_GENERIC_SPINLOCK
1869 config LOCKDEP_SUPPORT
1873 config STACKTRACE_SUPPORT
1877 source "init/Kconfig"
1879 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1887 bool "Support for PCI controller"
1888 depends on HW_HAS_PCI
1891 Find out whether you have a PCI motherboard. PCI is the name of a
1892 bus system, i.e. the way the CPU talks to the other stuff inside
1893 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1896 The PCI-HOWTO, available from
1897 <http://www.tldp.org/docs.html#howto>, contains valuable
1898 information about which PCI hardware does work under Linux and which
1904 source "drivers/pci/Kconfig"
1907 # ISA support is now enabled via select. Too many systems still have the one
1908 # or other ISA chip on the board that users don't know about so don't expect
1909 # users to choose the right thing ...
1916 depends on HW_HAS_EISA
1918 select GENERIC_ISA_DMA
1920 The Extended Industry Standard Architecture (EISA) bus was
1921 developed as an open alternative to the IBM MicroChannel bus.
1923 The EISA bus provided some of the features of the IBM MicroChannel
1924 bus while maintaining backward compatibility with cards made for
1925 the older ISA bus. The EISA bus saw limited use between 1988 and
1926 1995 when it was made obsolete by the PCI bus.
1928 Say Y here if you are building a kernel for an EISA-based machine.
1932 source "drivers/eisa/Kconfig"
1935 bool "TURBOchannel support"
1936 depends on MACH_DECSTATION
1938 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1939 processors. Documentation on writing device drivers for TurboChannel
1941 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1944 # bool "Access.Bus support"
1957 source "drivers/pcmcia/Kconfig"
1959 source "drivers/pci/hotplug/Kconfig"
1963 menu "Executable file formats"
1965 source "fs/Kconfig.binfmt"
1971 bool "Include IRIX binary compatibility"
1972 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1974 config MIPS32_COMPAT
1975 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1978 Select this option if you want Linux/MIPS 32-bit binary
1979 compatibility. Since all software available for Linux/MIPS is
1980 currently 32-bit you should say Y here.
1984 depends on MIPS32_COMPAT
1987 config SYSVIPC_COMPAT
1989 depends on COMPAT && SYSVIPC
1993 bool "Kernel support for o32 binaries"
1994 depends on MIPS32_COMPAT
1996 Select this option if you want to run o32 binaries. These are pure
1997 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1998 existing binaries are in this format.
2003 bool "Kernel support for n32 binaries"
2004 depends on MIPS32_COMPAT
2006 Select this option if you want to run n32 binaries. These are
2007 64-bit binaries using 32-bit quantities for addressing and certain
2008 data that would normally be 64-bit. They are used in special
2015 default y if MIPS32_O32 || MIPS32_N32
2019 menu "Power management options"
2021 source "kernel/power/Kconfig"
2025 source "net/Kconfig"
2027 source "drivers/Kconfig"
2031 source "kernel/Kconfig.instrumentation"
2033 source "arch/mips/Kconfig.debug"
2035 source "security/Kconfig"
2037 source "crypto/Kconfig"
2039 source "lib/Kconfig"