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"
32 select SYS_HAS_CPU_RM9000
33 select SYS_SUPPORTS_32BIT_KERNEL
34 select SYS_SUPPORTS_BIG_ENDIAN
35 select SYS_SUPPORTS_KGDB
37 The eXcite is a smart camera platform manufactured by
38 Basler Vision Technologies AG.
41 bool "BCM47XX based boards"
44 select DMA_NONCOHERENT
47 select SYS_HAS_CPU_MIPS32_R1
48 select SYS_SUPPORTS_32BIT_KERNEL
49 select SYS_SUPPORTS_LITTLE_ENDIAN
51 select SSB_DRIVER_MIPS
52 select SSB_DRIVER_EXTIF
53 select SSB_PCICORE_HOSTMODE if PCI
55 select SYS_HAS_EARLY_PRINTK
58 Support for BCM47XX based boards
65 select DMA_NONCOHERENT
71 select PCI_GT64XXX_PCI0
72 select SYS_HAS_CPU_NEVADA
73 select SYS_HAS_EARLY_PRINTK
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
76 select SYS_SUPPORTS_LITTLE_ENDIAN
77 select GENERIC_HARDIRQS_NO__DO_IRQ
79 config MACH_DECSTATION
84 select CPU_DADDI_WORKAROUNDS if 64BIT
85 select CPU_R4000_WORKAROUNDS if 64BIT
86 select CPU_R4400_WORKAROUNDS if 64BIT
87 select DMA_NONCOHERENT
90 select SYS_HAS_CPU_R3000
91 select SYS_HAS_CPU_R4X00
92 select SYS_SUPPORTS_32BIT_KERNEL
93 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
94 select SYS_SUPPORTS_LITTLE_ENDIAN
95 select SYS_SUPPORTS_128HZ
96 select SYS_SUPPORTS_256HZ
97 select SYS_SUPPORTS_1024HZ
99 This enables support for DEC's MIPS based workstations. For details
100 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
101 DECstation porting pages on <http://decstation.unix-ag.org/>.
103 If you have one of the following DECstation Models you definitely
104 want to choose R4xx0 for the CPU Type:
111 otherwise choose R3000.
114 bool "Jazz family of machines"
117 select ARCH_MAY_HAVE_PC_FDC
120 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
121 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"
141 select DMA_NONCOHERENT
142 select SYS_HAS_EARLY_PRINTK
145 select PCI_GT64XXX_PCI0
147 select R5000_CPU_SCACHE
148 select SYS_HAS_CPU_R5000
149 select SYS_SUPPORTS_32BIT_KERNEL
150 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
151 select SYS_SUPPORTS_LITTLE_ENDIAN
152 select GENERIC_HARDIRQS_NO__DO_IRQ
155 bool "Lemote Fulong mini-PC"
156 select ARCH_SPARSEMEM_ENABLE
159 select SYS_HAS_CPU_LOONGSON2
160 select DMA_NONCOHERENT
163 select HAVE_STD_PC_SERIAL_PORT
168 select SYS_SUPPORTS_32BIT_KERNEL
169 select SYS_SUPPORTS_64BIT_KERNEL
170 select SYS_SUPPORTS_LITTLE_ENDIAN
171 select SYS_SUPPORTS_HIGHMEM
172 select SYS_HAS_EARLY_PRINTK
173 select GENERIC_HARDIRQS_NO__DO_IRQ
174 select GENERIC_ISA_DMA_SUPPORT_BROKEN
177 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
181 bool "MIPS Atlas board"
186 select DMA_NONCOHERENT
187 select SYS_HAS_EARLY_PRINTK
190 select MIPS_BOARDS_GEN
192 select PCI_GT64XXX_PCI0
194 select RM7000_CPU_SCACHE
196 select SYS_HAS_CPU_MIPS32_R1
197 select SYS_HAS_CPU_MIPS32_R2
198 select SYS_HAS_CPU_MIPS64_R1
199 select SYS_HAS_CPU_NEVADA
200 select SYS_HAS_CPU_RM7000
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_64BIT_KERNEL
203 select SYS_SUPPORTS_BIG_ENDIAN
204 select SYS_SUPPORTS_LITTLE_ENDIAN
205 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
206 select SYS_SUPPORTS_SMARTMIPS
207 select GENERIC_HARDIRQS_NO__DO_IRQ
209 This enables support for the MIPS Technologies Atlas evaluation
213 bool "MIPS Malta board"
214 select ARCH_MAY_HAVE_PC_FDC
219 select DMA_NONCOHERENT
220 select GENERIC_ISA_DMA
225 select MIPS_BOARDS_GEN
227 select MIPS_CPU_SCACHE
228 select PCI_GT64XXX_PCI0
231 select SYS_HAS_CPU_MIPS32_R1
232 select SYS_HAS_CPU_MIPS32_R2
233 select SYS_HAS_CPU_MIPS64_R1
234 select SYS_HAS_CPU_NEVADA
235 select SYS_HAS_CPU_RM7000
236 select SYS_HAS_EARLY_PRINTK
237 select SYS_SUPPORTS_32BIT_KERNEL
238 select SYS_SUPPORTS_64BIT_KERNEL
239 select SYS_SUPPORTS_BIG_ENDIAN
240 select SYS_SUPPORTS_LITTLE_ENDIAN
241 select SYS_SUPPORTS_MULTITHREADING
242 select SYS_SUPPORTS_SMARTMIPS
244 This enables support for the MIPS Technologies Malta evaluation
248 bool "MIPS SEAD board"
252 select DMA_NONCOHERENT
253 select SYS_HAS_EARLY_PRINTK
254 select MIPS_BOARDS_GEN
255 select SYS_HAS_CPU_MIPS32_R1
256 select SYS_HAS_CPU_MIPS32_R2
257 select SYS_HAS_CPU_MIPS64_R1
258 select SYS_SUPPORTS_32BIT_KERNEL
259 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
260 select SYS_SUPPORTS_BIG_ENDIAN
261 select SYS_SUPPORTS_LITTLE_ENDIAN
262 select SYS_SUPPORTS_SMARTMIPS
264 This enables support for the MIPS Technologies SEAD evaluation
268 bool 'MIPS simulator (MIPSsim)'
271 select DMA_NONCOHERENT
272 select SYS_HAS_EARLY_PRINTK
275 select SYS_HAS_CPU_MIPS32_R1
276 select SYS_HAS_CPU_MIPS32_R2
277 select SYS_HAS_EARLY_PRINTK
278 select SYS_SUPPORTS_32BIT_KERNEL
279 select SYS_SUPPORTS_BIG_ENDIAN
280 select SYS_SUPPORTS_MULTITHREADING
281 select SYS_SUPPORTS_LITTLE_ENDIAN
283 This option enables support for MIPS Technologies MIPSsim software
287 bool "NEC EMMA2RH Mark-eins"
290 select DMA_NONCOHERENT
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_BIG_ENDIAN
296 select SYS_SUPPORTS_LITTLE_ENDIAN
297 select SYS_HAS_CPU_R5000
299 This enables support for the R5432-based NEC Mark-eins
300 boards with R5500 CPU.
303 bool "NEC VR4100 series based machines"
306 select SYS_HAS_CPU_VR41XX
307 select GENERIC_HARDIRQS_NO__DO_IRQ
310 bool "Philips PNX8550 based JBS board"
312 select SYS_SUPPORTS_LITTLE_ENDIAN
314 config PNX8550_STB810
315 bool "Philips PNX8550 based STB810 board"
317 select SYS_SUPPORTS_LITTLE_ENDIAN
320 bool "PMC-Sierra MSP chipsets"
321 depends on EXPERIMENTAL
322 select DMA_NONCOHERENT
324 select NO_EXCEPT_FILL
326 select SYS_HAS_CPU_MIPS32_R1
327 select SYS_HAS_CPU_MIPS32_R2
328 select SYS_SUPPORTS_32BIT_KERNEL
329 select SYS_SUPPORTS_BIG_ENDIAN
330 select SYS_SUPPORTS_KGDB
333 select SERIAL_8250_CONSOLE
335 This adds support for the PMC-Sierra family of Multi-Service
336 Processor System-On-A-Chips. These parts include a number
337 of integrated peripherals, interfaces and DSPs in addition to
338 a variety of MIPS cores.
341 bool "PMC-Sierra Yosemite eval board"
350 select SYS_HAS_CPU_RM9000
351 select SYS_HAS_EARLY_PRINTK
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL
354 select SYS_SUPPORTS_BIG_ENDIAN
355 select SYS_SUPPORTS_HIGHMEM
356 select SYS_SUPPORTS_KGDB
357 select SYS_SUPPORTS_SMP
359 Yosemite is an evaluation board for the RM9000x2 processor
360 manufactured by PMC-Sierra.
367 select GENERIC_ISA_DMA
368 select HAVE_STD_PC_SERIAL_PORT
374 select SYS_HAS_CPU_MIPS32_R1
375 select SYS_HAS_EARLY_PRINTK
376 select SYS_SUPPORTS_32BIT_KERNEL
377 select SYS_SUPPORTS_BIG_ENDIAN
378 select SYS_SUPPORTS_LITTLE_ENDIAN
379 select GENERIC_HARDIRQS_NO__DO_IRQ
380 select NR_CPUS_DEFAULT_1
381 select SYS_SUPPORTS_SMP
383 Qemu is a software emulator which among other architectures also
384 can simulate a MIPS32 4Kc system. This patch adds support for the
385 system architecture that currently is being simulated by Qemu. It
386 will eventually be removed again when Qemu has the capability to
387 simulate actual MIPS hardware platforms. More information on Qemu
388 can be found at http://www.linux-mips.org/wiki/Qemu.
391 bool "SGI IP22 (Indy/Indigo2)"
397 select DEFAULT_SGI_PARTITION
398 select DMA_NONCOHERENT
402 select IP22_CPU_SCACHE
404 select GENERIC_ISA_DMA_SUPPORT_BROKEN
405 select SGI_HAS_DS1286
407 select SGI_HAS_INDYDOG
412 select SYS_HAS_CPU_R4X00
413 select SYS_HAS_CPU_R5000
414 select SYS_HAS_EARLY_PRINTK
415 select SYS_SUPPORTS_32BIT_KERNEL
416 select SYS_SUPPORTS_64BIT_KERNEL
417 select SYS_SUPPORTS_BIG_ENDIAN
419 This are the SGI Indy, Challenge S and Indigo2, as well as certain
420 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
421 that runs on these, say Y here.
424 bool "SGI IP27 (Origin200/2000)"
428 select DEFAULT_SGI_PARTITION
430 select SYS_HAS_EARLY_PRINTK
432 select NR_CPUS_DEFAULT_64
433 select SYS_HAS_CPU_R10000
434 select SYS_SUPPORTS_64BIT_KERNEL
435 select SYS_SUPPORTS_BIG_ENDIAN
436 select SYS_SUPPORTS_KGDB
437 select SYS_SUPPORTS_NUMA
438 select SYS_SUPPORTS_SMP
439 select GENERIC_HARDIRQS_NO__DO_IRQ
441 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
442 workstations. To compile a Linux kernel that runs on these, say Y
446 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
447 depends on EXPERIMENTAL
453 select DEFAULT_SGI_PARTITION
454 select DMA_NONCOHERENT
455 select GENERIC_ISA_DMA_SUPPORT_BROKEN
460 select SGI_HAS_DS1286
462 select SGI_HAS_INDYDOG
467 select SYS_HAS_CPU_R10000
468 select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_64BIT_KERNEL
470 select SYS_SUPPORTS_BIG_ENDIAN
472 This is the SGI Indigo2 with R10000 processor. To compile a Linux
473 kernel that runs on these, say Y here.
482 select DMA_NONCOHERENT
485 select R5000_CPU_SCACHE
486 select RM7000_CPU_SCACHE
487 select SYS_HAS_CPU_R5000
488 select SYS_HAS_CPU_R10000 if BROKEN
489 select SYS_HAS_CPU_RM7000
490 select SYS_HAS_CPU_NEVADA
491 select SYS_SUPPORTS_64BIT_KERNEL
492 select SYS_SUPPORTS_BIG_ENDIAN
494 If you want this kernel to run on SGI O2 workstation, say Y here.
497 bool "Sibyte BCM91120C-CRhine"
498 depends on EXPERIMENTAL
501 select SIBYTE_BCM1120
503 select SYS_HAS_CPU_SB1
504 select SYS_SUPPORTS_BIG_ENDIAN
505 select SYS_SUPPORTS_LITTLE_ENDIAN
508 bool "Sibyte BCM91120x-Carmel"
509 depends on EXPERIMENTAL
512 select SIBYTE_BCM1120
514 select SYS_HAS_CPU_SB1
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_LITTLE_ENDIAN
519 bool "Sibyte BCM91125C-CRhone"
520 depends on EXPERIMENTAL
523 select SIBYTE_BCM1125
525 select SYS_HAS_CPU_SB1
526 select SYS_SUPPORTS_BIG_ENDIAN
527 select SYS_SUPPORTS_HIGHMEM
528 select SYS_SUPPORTS_LITTLE_ENDIAN
531 bool "Sibyte BCM91125E-Rhone"
532 depends on EXPERIMENTAL
535 select SIBYTE_BCM1125H
537 select SYS_HAS_CPU_SB1
538 select SYS_SUPPORTS_BIG_ENDIAN
539 select SYS_SUPPORTS_LITTLE_ENDIAN
542 bool "Sibyte BCM91250A-SWARM"
545 select NR_CPUS_DEFAULT_2
548 select SYS_HAS_CPU_SB1
549 select SYS_SUPPORTS_BIG_ENDIAN
550 select SYS_SUPPORTS_HIGHMEM
551 select SYS_SUPPORTS_KGDB
552 select SYS_SUPPORTS_LITTLE_ENDIAN
553 select ZONE_DMA32 if 64BIT
555 config SIBYTE_LITTLESUR
556 bool "Sibyte BCM91250C2-LittleSur"
557 depends on EXPERIMENTAL
560 select NR_CPUS_DEFAULT_2
563 select SYS_HAS_CPU_SB1
564 select SYS_SUPPORTS_BIG_ENDIAN
565 select SYS_SUPPORTS_HIGHMEM
566 select SYS_SUPPORTS_LITTLE_ENDIAN
568 config SIBYTE_SENTOSA
569 bool "Sibyte BCM91250E-Sentosa"
570 depends on EXPERIMENTAL
573 select NR_CPUS_DEFAULT_2
576 select SYS_HAS_CPU_SB1
577 select SYS_SUPPORTS_BIG_ENDIAN
578 select SYS_SUPPORTS_LITTLE_ENDIAN
581 bool "Sibyte BCM91480B-BigSur"
584 select NR_CPUS_DEFAULT_4
585 select SIBYTE_BCM1x80
587 select SYS_HAS_CPU_SB1
588 select SYS_SUPPORTS_BIG_ENDIAN
589 select SYS_SUPPORTS_HIGHMEM
590 select SYS_SUPPORTS_LITTLE_ENDIAN
591 select ZONE_DMA32 if 64BIT
594 bool "SNI RM200/300/400"
595 select ARC if CPU_LITTLE_ENDIAN
596 select ARC32 if CPU_LITTLE_ENDIAN
597 select SNIPROM if CPU_BIG_ENDIAN
598 select ARCH_MAY_HAVE_PC_FDC
602 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
603 select DMA_NONCOHERENT
604 select GENERIC_ISA_DMA
611 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
612 select SYS_HAS_CPU_R4X00
613 select SYS_HAS_CPU_R5000
614 select SYS_HAS_CPU_R10000
615 select R5000_CPU_SCACHE
616 select SYS_HAS_EARLY_PRINTK
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select SYS_SUPPORTS_HIGHMEM
621 select SYS_SUPPORTS_LITTLE_ENDIAN
623 The SNI RM200/300/400 are MIPS-based machines manufactured by
624 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
625 Technology and now in turn merged with Fujitsu. Say Y here to
626 support this machine type.
628 config TOSHIBA_JMR3927
629 bool "Toshiba JMR-TX3927 board"
631 select DMA_NONCOHERENT
636 select SYS_HAS_CPU_TX39XX
637 select SYS_SUPPORTS_32BIT_KERNEL
638 select SYS_SUPPORTS_LITTLE_ENDIAN
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select GENERIC_HARDIRQS_NO__DO_IRQ
642 config TOSHIBA_RBTX4927
643 bool "Toshiba RBTX49[23]7 board"
647 select DMA_NONCOHERENT
648 select HAS_TXX9_SERIAL
652 select I8259 if TOSHIBA_FPCIB0
654 select SYS_HAS_CPU_TX49XX
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_64BIT_KERNEL
657 select SYS_SUPPORTS_LITTLE_ENDIAN
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_KGDB
660 select GENERIC_HARDIRQS_NO__DO_IRQ
662 This Toshiba board is based on the TX4927 processor. Say Y here to
663 support this machine type
665 config TOSHIBA_RBTX4938
666 bool "Toshiba RBTX4938 board"
670 select DMA_NONCOHERENT
671 select HAS_TXX9_SERIAL
676 select SYS_HAS_CPU_TX49XX
677 select SYS_SUPPORTS_32BIT_KERNEL
678 select SYS_SUPPORTS_LITTLE_ENDIAN
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_KGDB
681 select GENERIC_HARDIRQS_NO__DO_IRQ
684 This Toshiba board is based on the TX4938 processor. Say Y here to
685 support this machine type
688 bool "Wind River PPMC board"
693 select DMA_NONCOHERENT
695 select PCI_GT64XXX_PCI0
697 select SYS_HAS_CPU_MIPS32_R1
698 select SYS_HAS_CPU_MIPS32_R2
699 select SYS_HAS_CPU_MIPS64_R1
700 select SYS_HAS_CPU_NEVADA
701 select SYS_HAS_CPU_RM7000
702 select SYS_SUPPORTS_32BIT_KERNEL
703 select SYS_SUPPORTS_64BIT_KERNEL
704 select SYS_SUPPORTS_BIG_ENDIAN
705 select SYS_SUPPORTS_LITTLE_ENDIAN
707 This enables support for the Wind River MIPS32 4KC PPMC evaluation
708 board, which is based on GT64120 bridge chip.
712 source "arch/mips/au1000/Kconfig"
713 source "arch/mips/basler/excite/Kconfig"
714 source "arch/mips/jazz/Kconfig"
715 source "arch/mips/lasat/Kconfig"
716 source "arch/mips/pmc-sierra/Kconfig"
717 source "arch/mips/sgi-ip27/Kconfig"
718 source "arch/mips/sibyte/Kconfig"
719 source "arch/mips/tx4927/Kconfig"
720 source "arch/mips/tx4938/Kconfig"
721 source "arch/mips/vr41xx/Kconfig"
725 config RWSEM_GENERIC_SPINLOCK
729 config RWSEM_XCHGADD_ALGORITHM
732 config ARCH_HAS_ILOG2_U32
736 config ARCH_HAS_ILOG2_U64
740 config ARCH_SUPPORTS_OPROFILE
742 default y if !MIPS_MT_SMTC
744 config GENERIC_FIND_NEXT_BIT
748 config GENERIC_HWEIGHT
752 config GENERIC_CALIBRATE_DELAY
756 config GENERIC_CLOCKEVENTS
764 config GENERIC_CMOS_UPDATE
768 config SCHED_NO_NO_OMIT_FRAME_POINTER
772 config GENERIC_HARDIRQS_NO__DO_IRQ
777 # Select some configuration options automatically based on user selections.
782 config ARCH_MAY_HAVE_PC_FDC
821 config DMA_NONCOHERENT
823 select DMA_NEED_PCI_MAP_STATE
825 config DMA_NEED_PCI_MAP_STATE
829 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
830 depends on SYS_HAS_EARLY_PRINTK
833 This option enables special console drivers which allow the kernel
834 to print messages very early in the bootup process.
836 This is useful for kernel debugging when your machine crashes very
837 early before the console code is initialized. For normal operation,
838 it is not recommended because it looks ugly on some machines and
839 doesn't cooperate with an X server. You should normally say N here,
840 unless you want to debug such a crash.
842 config SYS_HAS_EARLY_PRINTK
861 config MIPS_DISABLE_OBSOLETE_IDE
867 config GENERIC_ISA_DMA
869 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
871 config GENERIC_ISA_DMA_SUPPORT_BROKEN
873 select GENERIC_ISA_DMA
879 # Endianess selection. Sufficiently obscure so many users don't know what to
880 # answer,so we try hard to limit the available choices. Also the use of a
881 # choice statement should be more obvious to the user.
884 prompt "Endianess selection"
886 Some MIPS machines can be configured for either little or big endian
887 byte order. These modes require different kernels and a different
888 Linux distribution. In general there is one preferred byteorder for a
889 particular system but some systems are just as commonly used in the
890 one or the other endianness.
892 config CPU_BIG_ENDIAN
894 depends on SYS_SUPPORTS_BIG_ENDIAN
896 config CPU_LITTLE_ENDIAN
898 depends on SYS_SUPPORTS_LITTLE_ENDIAN
903 config SYS_SUPPORTS_APM_EMULATION
906 config SYS_SUPPORTS_BIG_ENDIAN
909 config SYS_SUPPORTS_LITTLE_ENDIAN
933 config MIPS_BOARDS_GEN
936 config PCI_GT64XXX_PCI0
939 config NO_EXCEPT_FILL
944 select HAS_TXX9_SERIAL
956 select DMA_NONCOHERENT
958 select SYS_HAS_CPU_MIPS32_R1
959 select SYS_HAS_EARLY_PRINTK
960 select SYS_SUPPORTS_32BIT_KERNEL
961 select GENERIC_HARDIRQS_NO__DO_IRQ
962 select SYS_SUPPORTS_KGDB
976 config SGI_HAS_DS1286
979 config SGI_HAS_INDYDOG
994 config DEFAULT_SGI_PARTITION
1006 config MIPS_L1_CACHE_SHIFT
1008 default "4" if MACH_DECSTATION
1009 default "7" if SGI_IP27 || SGI_IP28 || SNI_RM
1010 default "4" if PMC_MSP4200_EVAL
1013 config HAVE_STD_PC_SERIAL_PORT
1017 bool "ARC console support"
1018 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1022 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1027 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1036 menu "CPU selection"
1042 config CPU_LOONGSON2
1044 depends on SYS_HAS_CPU_LOONGSON2
1045 select CPU_SUPPORTS_32BIT_KERNEL
1046 select CPU_SUPPORTS_64BIT_KERNEL
1047 select CPU_SUPPORTS_HIGHMEM
1049 The Loongson 2E processor implements the MIPS III instruction set
1050 with many extensions.
1052 config CPU_MIPS32_R1
1053 bool "MIPS32 Release 1"
1054 depends on SYS_HAS_CPU_MIPS32_R1
1056 select CPU_HAS_PREFETCH
1057 select CPU_SUPPORTS_32BIT_KERNEL
1058 select CPU_SUPPORTS_HIGHMEM
1060 Choose this option to build a kernel for release 1 or later of the
1061 MIPS32 architecture. Most modern embedded systems with a 32-bit
1062 MIPS processor are based on a MIPS32 processor. If you know the
1063 specific type of processor in your system, choose those that one
1064 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1065 Release 2 of the MIPS32 architecture is available since several
1066 years so chances are you even have a MIPS32 Release 2 processor
1067 in which case you should choose CPU_MIPS32_R2 instead for better
1070 config CPU_MIPS32_R2
1071 bool "MIPS32 Release 2"
1072 depends on SYS_HAS_CPU_MIPS32_R2
1074 select CPU_HAS_PREFETCH
1075 select CPU_SUPPORTS_32BIT_KERNEL
1076 select CPU_SUPPORTS_HIGHMEM
1078 Choose this option to build a kernel for release 2 or later of the
1079 MIPS32 architecture. Most modern embedded systems with a 32-bit
1080 MIPS processor are based on a MIPS32 processor. If you know the
1081 specific type of processor in your system, choose those that one
1082 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1084 config CPU_MIPS64_R1
1085 bool "MIPS64 Release 1"
1086 depends on SYS_HAS_CPU_MIPS64_R1
1088 select CPU_HAS_PREFETCH
1089 select CPU_SUPPORTS_32BIT_KERNEL
1090 select CPU_SUPPORTS_64BIT_KERNEL
1091 select CPU_SUPPORTS_HIGHMEM
1093 Choose this option to build a kernel for release 1 or later of the
1094 MIPS64 architecture. Many modern embedded systems with a 64-bit
1095 MIPS processor are based on a MIPS64 processor. If you know the
1096 specific type of processor in your system, choose those that one
1097 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1098 Release 2 of the MIPS64 architecture is available since several
1099 years so chances are you even have a MIPS64 Release 2 processor
1100 in which case you should choose CPU_MIPS64_R2 instead for better
1103 config CPU_MIPS64_R2
1104 bool "MIPS64 Release 2"
1105 depends on SYS_HAS_CPU_MIPS64_R2
1107 select CPU_HAS_PREFETCH
1108 select CPU_SUPPORTS_32BIT_KERNEL
1109 select CPU_SUPPORTS_64BIT_KERNEL
1110 select CPU_SUPPORTS_HIGHMEM
1112 Choose this option to build a kernel for release 2 or later of the
1113 MIPS64 architecture. Many modern embedded systems with a 64-bit
1114 MIPS processor are based on a MIPS64 processor. If you know the
1115 specific type of processor in your system, choose those that one
1116 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1120 depends on SYS_HAS_CPU_R3000
1122 select CPU_SUPPORTS_32BIT_KERNEL
1123 select CPU_SUPPORTS_HIGHMEM
1125 Please make sure to pick the right CPU type. Linux/MIPS is not
1126 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1127 *not* work on R4000 machines and vice versa. However, since most
1128 of the supported machines have an R4000 (or similar) CPU, R4x00
1129 might be a safe bet. If the resulting kernel does not work,
1130 try to recompile with R3000.
1134 depends on SYS_HAS_CPU_TX39XX
1135 select CPU_SUPPORTS_32BIT_KERNEL
1139 depends on SYS_HAS_CPU_VR41XX
1140 select CPU_SUPPORTS_32BIT_KERNEL
1141 select CPU_SUPPORTS_64BIT_KERNEL
1143 The options selects support for the NEC VR4100 series of processors.
1144 Only choose this option if you have one of these processors as a
1145 kernel built with this option will not run on any other type of
1146 processor or vice versa.
1150 depends on SYS_HAS_CPU_R4300
1152 select CPU_SUPPORTS_32BIT_KERNEL
1153 select CPU_SUPPORTS_64BIT_KERNEL
1155 MIPS Technologies R4300-series processors.
1159 depends on SYS_HAS_CPU_R4X00
1161 select CPU_SUPPORTS_32BIT_KERNEL
1162 select CPU_SUPPORTS_64BIT_KERNEL
1164 MIPS Technologies R4000-series processors other than 4300, including
1165 the R4000, R4400, R4600, and 4700.
1169 depends on SYS_HAS_CPU_TX49XX
1171 select CPU_HAS_PREFETCH
1172 select CPU_SUPPORTS_32BIT_KERNEL
1173 select CPU_SUPPORTS_64BIT_KERNEL
1177 depends on SYS_HAS_CPU_R5000
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_64BIT_KERNEL
1182 MIPS Technologies R5000-series processors other than the Nevada.
1186 depends on SYS_HAS_CPU_R5432
1188 select CPU_SUPPORTS_32BIT_KERNEL
1189 select CPU_SUPPORTS_64BIT_KERNEL
1193 depends on EXPERIMENTAL
1195 depends on SYS_HAS_CPU_R6000
1196 select CPU_SUPPORTS_32BIT_KERNEL
1198 MIPS Technologies R6000 and R6000A series processors. Note these
1199 processors are extremely rare and the support for them is incomplete.
1203 depends on SYS_HAS_CPU_NEVADA
1205 select CPU_SUPPORTS_32BIT_KERNEL
1206 select CPU_SUPPORTS_64BIT_KERNEL
1208 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1212 depends on EXPERIMENTAL
1213 depends on SYS_HAS_CPU_R8000
1215 select CPU_HAS_PREFETCH
1216 select CPU_SUPPORTS_64BIT_KERNEL
1218 MIPS Technologies R8000 processors. Note these processors are
1219 uncommon and the support for them is incomplete.
1223 depends on SYS_HAS_CPU_R10000
1225 select CPU_HAS_PREFETCH
1226 select CPU_SUPPORTS_32BIT_KERNEL
1227 select CPU_SUPPORTS_64BIT_KERNEL
1228 select CPU_SUPPORTS_HIGHMEM
1230 MIPS Technologies R10000-series processors.
1234 depends on SYS_HAS_CPU_RM7000
1236 select CPU_HAS_PREFETCH
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1239 select CPU_SUPPORTS_HIGHMEM
1243 depends on SYS_HAS_CPU_RM9000
1245 select CPU_HAS_PREFETCH
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_64BIT_KERNEL
1248 select CPU_SUPPORTS_HIGHMEM
1249 select WEAK_ORDERING
1253 depends on SYS_HAS_CPU_SB1
1255 select CPU_SUPPORTS_32BIT_KERNEL
1256 select CPU_SUPPORTS_64BIT_KERNEL
1257 select CPU_SUPPORTS_HIGHMEM
1258 select WEAK_ORDERING
1262 config SYS_HAS_CPU_LOONGSON2
1265 config SYS_HAS_CPU_MIPS32_R1
1268 config SYS_HAS_CPU_MIPS32_R2
1271 config SYS_HAS_CPU_MIPS64_R1
1274 config SYS_HAS_CPU_MIPS64_R2
1277 config SYS_HAS_CPU_R3000
1280 config SYS_HAS_CPU_TX39XX
1283 config SYS_HAS_CPU_VR41XX
1286 config SYS_HAS_CPU_R4300
1289 config SYS_HAS_CPU_R4X00
1292 config SYS_HAS_CPU_TX49XX
1295 config SYS_HAS_CPU_R5000
1298 config SYS_HAS_CPU_R5432
1301 config SYS_HAS_CPU_R6000
1304 config SYS_HAS_CPU_NEVADA
1307 config SYS_HAS_CPU_R8000
1310 config SYS_HAS_CPU_R10000
1313 config SYS_HAS_CPU_RM7000
1316 config SYS_HAS_CPU_RM9000
1319 config SYS_HAS_CPU_SB1
1323 # CPU may reorder R->R, R->W, W->R, W->W
1324 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1326 config WEAK_ORDERING
1330 # CPU may reorder reads and writes beyond LL/SC
1331 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1333 config WEAK_REORDERING_BEYOND_LLSC
1338 # These two indicate any level of the MIPS32 and MIPS64 architecture
1342 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1346 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1349 # These two indicate the revision of the architecture, either Release 1 or Release 2
1353 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1357 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1359 config SYS_SUPPORTS_32BIT_KERNEL
1361 config SYS_SUPPORTS_64BIT_KERNEL
1363 config CPU_SUPPORTS_32BIT_KERNEL
1365 config CPU_SUPPORTS_64BIT_KERNEL
1372 prompt "Kernel code model"
1374 You should only select this option if you have a workload that
1375 actually benefits from 64-bit processing or if your machine has
1376 large memory. You will only be presented a single option in this
1377 menu if your system does not support both 32-bit and 64-bit kernels.
1380 bool "32-bit kernel"
1381 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1384 Select this option if you want to build a 32-bit kernel.
1386 bool "64-bit kernel"
1387 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1389 Select this option if you want to build a 64-bit kernel.
1394 prompt "Kernel page size"
1395 default PAGE_SIZE_4KB
1397 config PAGE_SIZE_4KB
1400 This option select the standard 4kB Linux page size. On some
1401 R3000-family processors this is the only available page size. Using
1402 4kB page size will minimize memory consumption and is therefore
1403 recommended for low memory systems.
1405 config PAGE_SIZE_8KB
1407 depends on EXPERIMENTAL && CPU_R8000
1409 Using 8kB page size will result in higher performance kernel at
1410 the price of higher memory consumption. This option is available
1411 only on the R8000 processor. Not that at the time of this writing
1412 this option is still high experimental; there are also issues with
1413 compatibility of user applications.
1415 config PAGE_SIZE_16KB
1417 depends on !CPU_R3000 && !CPU_TX39XX
1419 Using 16kB page size will result in higher performance kernel at
1420 the price of higher memory consumption. This option is available on
1421 all non-R3000 family processors. Note that you will need a suitable
1422 Linux distribution to support this.
1424 config PAGE_SIZE_64KB
1426 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1428 Using 64kB page size will result in higher performance kernel at
1429 the price of higher memory consumption. This option is available on
1430 all non-R3000 family processor. Not that at the time of this
1431 writing this option is still high experimental.
1438 config IP22_CPU_SCACHE
1443 # Support for a MIPS32 / MIPS64 style S-caches
1445 config MIPS_CPU_SCACHE
1449 config R5000_CPU_SCACHE
1453 config RM7000_CPU_SCACHE
1457 config SIBYTE_DMA_PAGEOPS
1458 bool "Use DMA to clear/copy pages"
1461 Instead of using the CPU to zero and copy pages, use a Data Mover
1462 channel. These DMA channels are otherwise unused by the standard
1463 SiByte Linux port. Seems to give a small performance benefit.
1465 config CPU_HAS_PREFETCH
1469 prompt "MIPS MT options"
1471 config MIPS_MT_DISABLED
1472 bool "Disable multithreading support."
1474 Use this option if your workload can't take advantage of
1475 MIPS hardware multithreading support. On systems that don't have
1476 the option of an MT-enabled processor this option will be the only
1477 option in this menu.
1480 bool "Use 1 TC on each available VPE for SMP"
1481 depends on SYS_SUPPORTS_MULTITHREADING
1482 select CPU_MIPSR2_IRQ_VI
1483 select CPU_MIPSR2_IRQ_EI
1485 select NR_CPUS_DEFAULT_2
1487 select SYS_SUPPORTS_SCHED_SMT if SMP
1488 select SYS_SUPPORTS_SMP
1491 This is a kernel model which is also known a VSMP or lately
1492 has been marketesed into SMVP.
1495 bool "SMTC: Use all TCs on all VPEs for SMP"
1496 depends on CPU_MIPS32_R2
1497 #depends on CPU_MIPS64_R2 # once there is hardware ...
1498 depends on SYS_SUPPORTS_MULTITHREADING
1499 select GENERIC_CLOCKEVENTS_BROADCAST
1500 select CPU_MIPSR2_IRQ_VI
1501 select CPU_MIPSR2_IRQ_EI
1503 select NR_CPUS_DEFAULT_8
1505 select SYS_SUPPORTS_SMP
1508 This is a kernel model which is known a SMTC or lately has been
1509 marketesed into SMVP.
1517 bool "SMT (multithreading) scheduler support"
1518 depends on SYS_SUPPORTS_SCHED_SMT
1521 SMT scheduler support improves the CPU scheduler's decision making
1522 when dealing with MIPS MT enabled cores at a cost of slightly
1523 increased overhead in some places. If unsure say N here.
1525 config SYS_SUPPORTS_SCHED_SMT
1529 config SYS_SUPPORTS_MULTITHREADING
1532 config MIPS_MT_FPAFF
1533 bool "Dynamic FPU affinity for FP-intensive threads"
1535 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1537 config MIPS_VPE_LOADER
1538 bool "VPE loader support."
1539 depends on SYS_SUPPORTS_MULTITHREADING
1540 select CPU_MIPSR2_IRQ_VI
1541 select CPU_MIPSR2_IRQ_EI
1544 Includes a loader for loading an elf relocatable object
1545 onto another VPE and running it.
1547 config MIPS_MT_SMTC_INSTANT_REPLAY
1548 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1549 depends on MIPS_MT_SMTC && !PREEMPT
1552 SMTC pseudo-interrupts between TCs are deferred and queued
1553 if the target TC is interrupt-inhibited (IXMT). In the first
1554 SMTC prototypes, these queued IPIs were serviced on return
1555 to user mode, or on entry into the kernel idle loop. The
1556 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1557 processing, which adds runtime overhead (hence the option to turn
1558 it off), but ensures that IPIs are handled promptly even under
1559 heavy I/O interrupt load.
1561 config MIPS_MT_SMTC_IM_BACKSTOP
1562 bool "Use per-TC register bits as backstop for inhibited IM bits"
1563 depends on MIPS_MT_SMTC
1566 To support multiple TC microthreads acting as "CPUs" within
1567 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1568 during interrupt handling. To support legacy drivers and interrupt
1569 controller management code, SMTC has a "backstop" to track and
1570 if necessary restore the interrupt mask. This has some performance
1571 impact on interrupt service overhead. Disable it only if you know
1574 config MIPS_MT_SMTC_IRQAFF
1575 bool "Support IRQ affinity API"
1576 depends on MIPS_MT_SMTC
1579 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1580 for SMTC Linux kernel. Requires platform support, of which
1581 an example can be found in the MIPS kernel i8259 and Malta
1582 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1583 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1584 interrupt dispatch, and should be used only if you know what
1587 config MIPS_VPE_LOADER_TOM
1588 bool "Load VPE program into memory hidden from linux"
1589 depends on MIPS_VPE_LOADER
1592 The loader can use memory that is present but has been hidden from
1593 Linux using the kernel command line option "mem=xxMB". It's up to
1594 you to ensure the amount you put in the option and the space your
1595 program requires is less or equal to the amount physically present.
1597 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1598 config MIPS_VPE_APSP_API
1599 bool "Enable support for AP/SP API (RTLX)"
1600 depends on MIPS_VPE_LOADER
1603 config MIPS_APSP_KSPD
1605 depends on MIPS_VPE_APSP_API
1608 KSPD is a kernel daemon that accepts syscall requests from the SP
1609 side, actions them and returns the results. It also handles the
1610 "exit" syscall notifying other kernel modules the SP program is
1611 exiting. You probably want to say yes here.
1613 config SB1_PASS_1_WORKAROUNDS
1615 depends on CPU_SB1_PASS_1
1618 config SB1_PASS_2_WORKAROUNDS
1620 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1623 config SB1_PASS_2_1_WORKAROUNDS
1625 depends on CPU_SB1 && CPU_SB1_PASS_2
1628 config 64BIT_PHYS_ADDR
1634 config CPU_HAS_SMARTMIPS
1635 depends on SYS_SUPPORTS_SMARTMIPS
1636 bool "Support for the SmartMIPS ASE"
1638 SmartMIPS is a extension of the MIPS32 architecture aimed at
1639 increased security at both hardware and software level for
1640 smartcards. Enabling this option will allow proper use of the
1641 SmartMIPS instructions by Linux applications. However a kernel with
1642 this option will not work on a MIPS core without SmartMIPS core. If
1643 you don't know you probably don't have SmartMIPS and should say N
1650 # Vectored interrupt mode is an R2 feature
1652 config CPU_MIPSR2_IRQ_VI
1656 # Extended interrupt mode is an R2 feature
1658 config CPU_MIPSR2_IRQ_EI
1663 depends on !CPU_R3000
1666 config GENERIC_CLOCKEVENTS_BROADCAST
1672 config CPU_DADDI_WORKAROUNDS
1675 config CPU_R4000_WORKAROUNDS
1677 select CPU_R4400_WORKAROUNDS
1679 config CPU_R4400_WORKAROUNDS
1683 # Use the generic interrupt handling code in kernel/irq/:
1685 config GENERIC_HARDIRQS
1689 config GENERIC_IRQ_PROBE
1697 # - Highmem only makes sense for the 32-bit kernel.
1698 # - The current highmem code will only work properly on physically indexed
1699 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1700 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1701 # moment we protect the user and offer the highmem option only on machines
1702 # where it's known to be safe. This will not offer highmem on a few systems
1703 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1704 # indexed CPUs but we're playing safe.
1705 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1706 # know they might have memory configurations that could make use of highmem
1710 bool "High Memory Support"
1711 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1713 config CPU_SUPPORTS_HIGHMEM
1716 config SYS_SUPPORTS_HIGHMEM
1719 config SYS_SUPPORTS_SMARTMIPS
1722 config ARCH_FLATMEM_ENABLE
1726 config ARCH_DISCONTIGMEM_ENABLE
1728 default y if SGI_IP27
1730 Say Y to support efficient handling of discontiguous physical memory,
1731 for architectures which are either NUMA (Non-Uniform Memory Access)
1732 or have huge holes in the physical address space for other reasons.
1733 See <file:Documentation/vm/numa> for more.
1735 config ARCH_POPULATES_NODE_MAP
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.
1788 config SYS_SUPPORTS_SMP
1791 config NR_CPUS_DEFAULT_1
1794 config NR_CPUS_DEFAULT_2
1797 config NR_CPUS_DEFAULT_4
1800 config NR_CPUS_DEFAULT_8
1803 config NR_CPUS_DEFAULT_16
1806 config NR_CPUS_DEFAULT_32
1809 config NR_CPUS_DEFAULT_64
1813 int "Maximum number of CPUs (2-64)"
1814 range 1 64 if NR_CPUS_DEFAULT_1
1816 default "1" if NR_CPUS_DEFAULT_1
1817 default "2" if NR_CPUS_DEFAULT_2
1818 default "4" if NR_CPUS_DEFAULT_4
1819 default "8" if NR_CPUS_DEFAULT_8
1820 default "16" if NR_CPUS_DEFAULT_16
1821 default "32" if NR_CPUS_DEFAULT_32
1822 default "64" if NR_CPUS_DEFAULT_64
1824 This allows you to specify the maximum number of CPUs which this
1825 kernel will support. The maximum supported value is 32 for 32-bit
1826 kernel and 64 for 64-bit kernels; the minimum value which makes
1827 sense is 1 for Qemu (useful only for kernel debugging purposes)
1828 and 2 for all others.
1830 This is purely to save memory - each supported CPU adds
1831 approximately eight kilobytes to the kernel image. For best
1832 performance should round up your number of processors to the next
1835 source "kernel/time/Kconfig"
1838 # Timer Interrupt Frequency Configuration
1842 prompt "Timer frequency"
1845 Allows the configuration of the timer frequency.
1848 bool "48 HZ" if SYS_SUPPORTS_48HZ
1851 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1854 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1857 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1860 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1863 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1866 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1870 config SYS_SUPPORTS_48HZ
1873 config SYS_SUPPORTS_100HZ
1876 config SYS_SUPPORTS_128HZ
1879 config SYS_SUPPORTS_250HZ
1882 config SYS_SUPPORTS_256HZ
1885 config SYS_SUPPORTS_1000HZ
1888 config SYS_SUPPORTS_1024HZ
1891 config SYS_SUPPORTS_ARBIT_HZ
1893 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1894 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1895 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1896 !SYS_SUPPORTS_1024HZ
1901 default 100 if HZ_100
1902 default 128 if HZ_128
1903 default 250 if HZ_250
1904 default 256 if HZ_256
1905 default 1000 if HZ_1000
1906 default 1024 if HZ_1024
1908 source "kernel/Kconfig.preempt"
1910 config MIPS_INSANE_LARGE
1911 bool "Support for large 64-bit configurations"
1912 depends on CPU_R10000 && 64BIT
1914 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1915 previous 64-bit processors which only supported 40 bit / 1TB. If you
1916 need processes of more than 1TB virtual address space, say Y here.
1917 This will result in additional memory usage, so it is not
1918 recommended for normal users.
1921 bool "Kexec system call (EXPERIMENTAL)"
1922 depends on EXPERIMENTAL
1924 kexec is a system call that implements the ability to shutdown your
1925 current kernel, and to start another kernel. It is like a reboot
1926 but it is independent of the system firmware. And like a reboot
1927 you can start any kernel with it, not just Linux.
1929 The name comes from the similarity to the exec system call.
1931 It is an ongoing process to be certain the hardware in a machine
1932 is properly shutdown, so do not be surprised if this code does not
1933 initially work for you. It may help to enable device hotplugging
1934 support. As of this writing the exact hardware interface is
1935 strongly in flux, so no good recommendation can be made.
1938 bool "Enable seccomp to safely compute untrusted bytecode"
1942 This kernel feature is useful for number crunching applications
1943 that may need to compute untrusted bytecode during their
1944 execution. By using pipes or other transports made available to
1945 the process as file descriptors supporting the read/write
1946 syscalls, it's possible to isolate those applications in
1947 their own address space using seccomp. Once seccomp is
1948 enabled via /proc/<pid>/seccomp, it cannot be disabled
1949 and the task is only allowed to execute a few safe syscalls
1950 defined by each seccomp mode.
1952 If unsure, say Y. Only embedded should say N here.
1956 config RWSEM_GENERIC_SPINLOCK
1960 config LOCKDEP_SUPPORT
1964 config STACKTRACE_SUPPORT
1968 source "init/Kconfig"
1970 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1978 bool "Support for PCI controller"
1979 depends on HW_HAS_PCI
1982 Find out whether you have a PCI motherboard. PCI is the name of a
1983 bus system, i.e. the way the CPU talks to the other stuff inside
1984 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1987 The PCI-HOWTO, available from
1988 <http://www.tldp.org/docs.html#howto>, contains valuable
1989 information about which PCI hardware does work under Linux and which
1995 source "drivers/pci/Kconfig"
1998 # ISA support is now enabled via select. Too many systems still have the one
1999 # or other ISA chip on the board that users don't know about so don't expect
2000 # users to choose the right thing ...
2007 depends on HW_HAS_EISA
2009 select GENERIC_ISA_DMA
2011 The Extended Industry Standard Architecture (EISA) bus was
2012 developed as an open alternative to the IBM MicroChannel bus.
2014 The EISA bus provided some of the features of the IBM MicroChannel
2015 bus while maintaining backward compatibility with cards made for
2016 the older ISA bus. The EISA bus saw limited use between 1988 and
2017 1995 when it was made obsolete by the PCI bus.
2019 Say Y here if you are building a kernel for an EISA-based machine.
2023 source "drivers/eisa/Kconfig"
2026 bool "TURBOchannel support"
2027 depends on MACH_DECSTATION
2029 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2030 processors. Documentation on writing device drivers for TurboChannel
2032 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2035 # bool "Access.Bus support"
2048 source "drivers/pcmcia/Kconfig"
2050 source "drivers/pci/hotplug/Kconfig"
2054 menu "Executable file formats"
2056 source "fs/Kconfig.binfmt"
2062 bool "Include IRIX binary compatibility"
2063 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2065 config MIPS32_COMPAT
2066 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2069 Select this option if you want Linux/MIPS 32-bit binary
2070 compatibility. Since all software available for Linux/MIPS is
2071 currently 32-bit you should say Y here.
2075 depends on MIPS32_COMPAT
2078 config SYSVIPC_COMPAT
2080 depends on COMPAT && SYSVIPC
2084 bool "Kernel support for o32 binaries"
2085 depends on MIPS32_COMPAT
2087 Select this option if you want to run o32 binaries. These are pure
2088 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2089 existing binaries are in this format.
2094 bool "Kernel support for n32 binaries"
2095 depends on MIPS32_COMPAT
2097 Select this option if you want to run n32 binaries. These are
2098 64-bit binaries using 32-bit quantities for addressing and certain
2099 data that would normally be 64-bit. They are used in special
2106 default y if MIPS32_O32 || MIPS32_N32
2110 menu "Power management options"
2112 source "kernel/power/Kconfig"
2116 source "net/Kconfig"
2118 source "drivers/Kconfig"
2122 source "kernel/Kconfig.instrumentation"
2124 source "arch/mips/Kconfig.debug"
2126 source "security/Kconfig"
2128 source "crypto/Kconfig"
2130 source "lib/Kconfig"