6 # Horrible source of confusion. Die, die, die ...
10 mainmenu "Linux/MIPS Kernel Configuration"
12 menu "Machine selection"
22 bool "Alchemy processor based machines"
25 bool "Basler eXcite smart camera"
34 select SYS_HAS_CPU_RM9000
35 select SYS_SUPPORTS_32BIT_KERNEL
36 select SYS_SUPPORTS_BIG_ENDIAN
37 select SYS_SUPPORTS_KGDB
39 The eXcite is a smart camera platform manufactured by
40 Basler Vision Technologies AG.
43 bool "BCM47XX based boards"
46 select DMA_NONCOHERENT
49 select SYS_HAS_CPU_MIPS32_R1
50 select SYS_SUPPORTS_32BIT_KERNEL
51 select SYS_SUPPORTS_LITTLE_ENDIAN
53 select SSB_DRIVER_MIPS
54 select SSB_DRIVER_EXTIF
55 select SSB_PCICORE_HOSTMODE if PCI
57 select SYS_HAS_EARLY_PRINTK
60 Support for BCM47XX based boards
67 select DMA_NONCOHERENT
73 select PCI_GT64XXX_PCI0
74 select SYS_HAS_CPU_NEVADA
75 select SYS_HAS_EARLY_PRINTK
76 select SYS_SUPPORTS_32BIT_KERNEL
77 select SYS_SUPPORTS_64BIT_KERNEL
78 select SYS_SUPPORTS_LITTLE_ENDIAN
79 select GENERIC_HARDIRQS_NO__DO_IRQ
81 config MACH_DECSTATION
87 select CPU_DADDI_WORKAROUNDS if 64BIT
88 select CPU_R4000_WORKAROUNDS if 64BIT
89 select CPU_R4400_WORKAROUNDS if 64BIT
90 select DMA_NONCOHERENT
93 select SYS_HAS_CPU_R3000
94 select SYS_HAS_CPU_R4X00
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
97 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SYS_SUPPORTS_128HZ
99 select SYS_SUPPORTS_256HZ
100 select SYS_SUPPORTS_1024HZ
102 This enables support for DEC's MIPS based workstations. For details
103 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
104 DECstation porting pages on <http://decstation.unix-ag.org/>.
106 If you have one of the following DECstation Models you definitely
107 want to choose R4xx0 for the CPU Type:
114 otherwise choose R3000.
117 bool "Jazz family of machines"
120 select ARCH_MAY_HAVE_PC_FDC
123 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
124 select GENERIC_ISA_DMA
129 select SYS_HAS_CPU_R4X00
130 select SYS_SUPPORTS_32BIT_KERNEL
131 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
132 select SYS_SUPPORTS_100HZ
133 select GENERIC_HARDIRQS_NO__DO_IRQ
135 This a family of machines based on the MIPS R4030 chipset which was
136 used by several vendors to build RISC/os and Windows NT workstations.
137 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
138 Olivetti M700-10 workstations.
141 bool "LASAT Networks platforms"
144 select DMA_NONCOHERENT
145 select SYS_HAS_EARLY_PRINTK
148 select PCI_GT64XXX_PCI0
150 select R5000_CPU_SCACHE
151 select SYS_HAS_CPU_R5000
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
154 select SYS_SUPPORTS_LITTLE_ENDIAN
155 select GENERIC_HARDIRQS_NO__DO_IRQ
158 bool "Lemote Fulong mini-PC"
159 select ARCH_SPARSEMEM_ENABLE
162 select SYS_HAS_CPU_LOONGSON2
163 select DMA_NONCOHERENT
166 select HAVE_STD_PC_SERIAL_PORT
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_64BIT_KERNEL
173 select SYS_SUPPORTS_LITTLE_ENDIAN
174 select SYS_SUPPORTS_HIGHMEM
175 select SYS_HAS_EARLY_PRINTK
176 select GENERIC_HARDIRQS_NO__DO_IRQ
177 select GENERIC_ISA_DMA_SUPPORT_BROKEN
180 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
184 bool "MIPS Atlas board"
189 select DMA_NONCOHERENT
190 select SYS_HAS_EARLY_PRINTK
193 select MIPS_BOARDS_GEN
195 select PCI_GT64XXX_PCI0
197 select RM7000_CPU_SCACHE
199 select SYS_HAS_CPU_MIPS32_R1
200 select SYS_HAS_CPU_MIPS32_R2
201 select SYS_HAS_CPU_MIPS64_R1
202 select SYS_HAS_CPU_NEVADA
203 select SYS_HAS_CPU_RM7000
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_64BIT_KERNEL
206 select SYS_SUPPORTS_BIG_ENDIAN
207 select SYS_SUPPORTS_LITTLE_ENDIAN
208 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
209 select SYS_SUPPORTS_SMARTMIPS
210 select GENERIC_HARDIRQS_NO__DO_IRQ
212 This enables support for the MIPS Technologies Atlas evaluation
216 bool "MIPS Malta board"
217 select ARCH_MAY_HAVE_PC_FDC
222 select DMA_NONCOHERENT
223 select GENERIC_ISA_DMA
229 select MIPS_BOARDS_GEN
231 select MIPS_CPU_SCACHE
232 select PCI_GT64XXX_PCI0
235 select SYS_HAS_CPU_MIPS32_R1
236 select SYS_HAS_CPU_MIPS32_R2
237 select SYS_HAS_CPU_MIPS64_R1
238 select SYS_HAS_CPU_NEVADA
239 select SYS_HAS_CPU_RM7000
240 select SYS_HAS_EARLY_PRINTK
241 select SYS_SUPPORTS_32BIT_KERNEL
242 select SYS_SUPPORTS_64BIT_KERNEL
243 select SYS_SUPPORTS_BIG_ENDIAN
244 select SYS_SUPPORTS_LITTLE_ENDIAN
245 select SYS_SUPPORTS_MULTITHREADING
246 select SYS_SUPPORTS_SMARTMIPS
248 This enables support for the MIPS Technologies Malta evaluation
252 bool "MIPS SEAD board"
256 select DMA_NONCOHERENT
257 select SYS_HAS_EARLY_PRINTK
258 select MIPS_BOARDS_GEN
259 select SYS_HAS_CPU_MIPS32_R1
260 select SYS_HAS_CPU_MIPS32_R2
261 select SYS_HAS_CPU_MIPS64_R1
262 select SYS_SUPPORTS_32BIT_KERNEL
263 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
264 select SYS_SUPPORTS_BIG_ENDIAN
265 select SYS_SUPPORTS_LITTLE_ENDIAN
266 select SYS_SUPPORTS_SMARTMIPS
268 This enables support for the MIPS Technologies SEAD evaluation
272 bool 'MIPS simulator (MIPSsim)'
275 select DMA_NONCOHERENT
276 select SYS_HAS_EARLY_PRINTK
279 select SYS_HAS_CPU_MIPS32_R1
280 select SYS_HAS_CPU_MIPS32_R2
281 select SYS_HAS_EARLY_PRINTK
282 select SYS_SUPPORTS_32BIT_KERNEL
283 select SYS_SUPPORTS_BIG_ENDIAN
284 select SYS_SUPPORTS_MULTITHREADING
285 select SYS_SUPPORTS_LITTLE_ENDIAN
287 This option enables support for MIPS Technologies MIPSsim software
291 bool "NEC EMMA2RH Mark-eins"
294 select DMA_NONCOHERENT
298 select SYS_SUPPORTS_32BIT_KERNEL
299 select SYS_SUPPORTS_BIG_ENDIAN
300 select SYS_SUPPORTS_LITTLE_ENDIAN
301 select SYS_HAS_CPU_R5000
303 This enables support for the R5432-based NEC Mark-eins
304 boards with R5500 CPU.
307 bool "NEC VR4100 series based machines"
310 select SYS_HAS_CPU_VR41XX
311 select GENERIC_HARDIRQS_NO__DO_IRQ
314 bool "NXP PNX8550 based JBS board"
316 select SYS_SUPPORTS_LITTLE_ENDIAN
318 config PNX8550_STB810
319 bool "NXP PNX8550 based STB810 board"
321 select SYS_SUPPORTS_LITTLE_ENDIAN
324 bool "PMC-Sierra MSP chipsets"
325 depends on EXPERIMENTAL
326 select DMA_NONCOHERENT
328 select NO_EXCEPT_FILL
330 select SYS_HAS_CPU_MIPS32_R1
331 select SYS_HAS_CPU_MIPS32_R2
332 select SYS_SUPPORTS_32BIT_KERNEL
333 select SYS_SUPPORTS_BIG_ENDIAN
334 select SYS_SUPPORTS_KGDB
337 select SERIAL_8250_CONSOLE
339 This adds support for the PMC-Sierra family of Multi-Service
340 Processor System-On-A-Chips. These parts include a number
341 of integrated peripherals, interfaces and DSPs in addition to
342 a variety of MIPS cores.
345 bool "PMC-Sierra Yosemite eval board"
354 select SYS_HAS_CPU_RM9000
355 select SYS_HAS_EARLY_PRINTK
356 select SYS_SUPPORTS_32BIT_KERNEL
357 select SYS_SUPPORTS_64BIT_KERNEL
358 select SYS_SUPPORTS_BIG_ENDIAN
359 select SYS_SUPPORTS_HIGHMEM
360 select SYS_SUPPORTS_KGDB
361 select SYS_SUPPORTS_SMP
363 Yosemite is an evaluation board for the RM9000x2 processor
364 manufactured by PMC-Sierra.
367 bool "SGI IP22 (Indy/Indigo2)"
373 select DEFAULT_SGI_PARTITION
374 select DMA_NONCOHERENT
378 select IP22_CPU_SCACHE
380 select GENERIC_ISA_DMA_SUPPORT_BROKEN
381 select SGI_HAS_DS1286
383 select SGI_HAS_INDYDOG
388 select SYS_HAS_CPU_R4X00
389 select SYS_HAS_CPU_R5000
390 select SYS_HAS_EARLY_PRINTK
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_64BIT_KERNEL
393 select SYS_SUPPORTS_BIG_ENDIAN
395 This are the SGI Indy, Challenge S and Indigo2, as well as certain
396 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
397 that runs on these, say Y here.
400 bool "SGI IP27 (Origin200/2000)"
404 select DEFAULT_SGI_PARTITION
406 select SYS_HAS_EARLY_PRINTK
408 select NR_CPUS_DEFAULT_64
409 select SYS_HAS_CPU_R10000
410 select SYS_SUPPORTS_64BIT_KERNEL
411 select SYS_SUPPORTS_BIG_ENDIAN
412 select SYS_SUPPORTS_KGDB
413 select SYS_SUPPORTS_NUMA
414 select SYS_SUPPORTS_SMP
415 select GENERIC_HARDIRQS_NO__DO_IRQ
417 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
418 workstations. To compile a Linux kernel that runs on these, say Y
422 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
423 depends on EXPERIMENTAL
429 select DEFAULT_SGI_PARTITION
430 select DMA_NONCOHERENT
431 select GENERIC_ISA_DMA_SUPPORT_BROKEN
436 select SGI_HAS_DS1286
438 select SGI_HAS_INDYDOG
443 select SYS_HAS_CPU_R10000
444 select SYS_HAS_EARLY_PRINTK
445 select SYS_SUPPORTS_64BIT_KERNEL
446 select SYS_SUPPORTS_BIG_ENDIAN
448 This is the SGI Indigo2 with R10000 processor. To compile a Linux
449 kernel that runs on these, say Y here.
458 select DMA_NONCOHERENT
461 select R5000_CPU_SCACHE
462 select RM7000_CPU_SCACHE
463 select SYS_HAS_CPU_R5000
464 select SYS_HAS_CPU_R10000 if BROKEN
465 select SYS_HAS_CPU_RM7000
466 select SYS_HAS_CPU_NEVADA
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
470 If you want this kernel to run on SGI O2 workstation, say Y here.
473 bool "Sibyte BCM91120C-CRhine"
474 depends on EXPERIMENTAL
477 select SIBYTE_BCM1120
479 select SYS_HAS_CPU_SB1
480 select SYS_SUPPORTS_BIG_ENDIAN
481 select SYS_SUPPORTS_LITTLE_ENDIAN
484 bool "Sibyte BCM91120x-Carmel"
485 depends on EXPERIMENTAL
488 select SIBYTE_BCM1120
490 select SYS_HAS_CPU_SB1
491 select SYS_SUPPORTS_BIG_ENDIAN
492 select SYS_SUPPORTS_LITTLE_ENDIAN
495 bool "Sibyte BCM91125C-CRhone"
496 depends on EXPERIMENTAL
499 select SIBYTE_BCM1125
501 select SYS_HAS_CPU_SB1
502 select SYS_SUPPORTS_BIG_ENDIAN
503 select SYS_SUPPORTS_HIGHMEM
504 select SYS_SUPPORTS_LITTLE_ENDIAN
507 bool "Sibyte BCM91125E-Rhone"
508 depends on EXPERIMENTAL
511 select SIBYTE_BCM1125H
513 select SYS_HAS_CPU_SB1
514 select SYS_SUPPORTS_BIG_ENDIAN
515 select SYS_SUPPORTS_LITTLE_ENDIAN
518 bool "Sibyte BCM91250A-SWARM"
521 select NR_CPUS_DEFAULT_2
524 select SYS_HAS_CPU_SB1
525 select SYS_SUPPORTS_BIG_ENDIAN
526 select SYS_SUPPORTS_HIGHMEM
527 select SYS_SUPPORTS_KGDB
528 select SYS_SUPPORTS_LITTLE_ENDIAN
529 select ZONE_DMA32 if 64BIT
531 config SIBYTE_LITTLESUR
532 bool "Sibyte BCM91250C2-LittleSur"
533 depends on EXPERIMENTAL
536 select NR_CPUS_DEFAULT_2
539 select SYS_HAS_CPU_SB1
540 select SYS_SUPPORTS_BIG_ENDIAN
541 select SYS_SUPPORTS_HIGHMEM
542 select SYS_SUPPORTS_LITTLE_ENDIAN
544 config SIBYTE_SENTOSA
545 bool "Sibyte BCM91250E-Sentosa"
546 depends on EXPERIMENTAL
549 select NR_CPUS_DEFAULT_2
552 select SYS_HAS_CPU_SB1
553 select SYS_SUPPORTS_BIG_ENDIAN
554 select SYS_SUPPORTS_LITTLE_ENDIAN
557 bool "Sibyte BCM91480B-BigSur"
560 select NR_CPUS_DEFAULT_4
561 select SIBYTE_BCM1x80
563 select SYS_HAS_CPU_SB1
564 select SYS_SUPPORTS_BIG_ENDIAN
565 select SYS_SUPPORTS_HIGHMEM
566 select SYS_SUPPORTS_LITTLE_ENDIAN
567 select ZONE_DMA32 if 64BIT
570 bool "SNI RM200/300/400"
571 select ARC if CPU_LITTLE_ENDIAN
572 select ARC32 if CPU_LITTLE_ENDIAN
573 select SNIPROM if CPU_BIG_ENDIAN
574 select ARCH_MAY_HAVE_PC_FDC
578 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
579 select DMA_NONCOHERENT
580 select GENERIC_ISA_DMA
587 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
588 select SYS_HAS_CPU_R4X00
589 select SYS_HAS_CPU_R5000
590 select SYS_HAS_CPU_R10000
591 select R5000_CPU_SCACHE
592 select SYS_HAS_EARLY_PRINTK
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_HIGHMEM
597 select SYS_SUPPORTS_LITTLE_ENDIAN
599 The SNI RM200/300/400 are MIPS-based machines manufactured by
600 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
601 Technology and now in turn merged with Fujitsu. Say Y here to
602 support this machine type.
604 config TOSHIBA_JMR3927
605 bool "Toshiba JMR-TX3927 board"
607 select DMA_NONCOHERENT
612 select SYS_HAS_CPU_TX39XX
613 select SYS_SUPPORTS_32BIT_KERNEL
614 select SYS_SUPPORTS_LITTLE_ENDIAN
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select GENERIC_HARDIRQS_NO__DO_IRQ
619 config TOSHIBA_RBTX4927
620 bool "Toshiba RBTX49[23]7 board"
624 select DMA_NONCOHERENT
625 select HAS_TXX9_SERIAL
629 select I8259 if TOSHIBA_FPCIB0
631 select SYS_HAS_CPU_TX49XX
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_64BIT_KERNEL
634 select SYS_SUPPORTS_LITTLE_ENDIAN
635 select SYS_SUPPORTS_BIG_ENDIAN
636 select SYS_SUPPORTS_KGDB
637 select GENERIC_HARDIRQS_NO__DO_IRQ
639 This Toshiba board is based on the TX4927 processor. Say Y here to
640 support this machine type
642 config TOSHIBA_RBTX4938
643 bool "Toshiba RBTX4938 board"
647 select DMA_NONCOHERENT
648 select HAS_TXX9_SERIAL
653 select SYS_HAS_CPU_TX49XX
654 select SYS_SUPPORTS_32BIT_KERNEL
655 select SYS_SUPPORTS_LITTLE_ENDIAN
656 select SYS_SUPPORTS_BIG_ENDIAN
657 select SYS_SUPPORTS_KGDB
658 select GENERIC_HARDIRQS_NO__DO_IRQ
661 This Toshiba board is based on the TX4938 processor. Say Y here to
662 support this machine type
665 bool "Wind River PPMC board"
670 select DMA_NONCOHERENT
672 select PCI_GT64XXX_PCI0
674 select SYS_HAS_CPU_MIPS32_R1
675 select SYS_HAS_CPU_MIPS32_R2
676 select SYS_HAS_CPU_MIPS64_R1
677 select SYS_HAS_CPU_NEVADA
678 select SYS_HAS_CPU_RM7000
679 select SYS_SUPPORTS_32BIT_KERNEL
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_LITTLE_ENDIAN
684 This enables support for the Wind River MIPS32 4KC PPMC evaluation
685 board, which is based on GT64120 bridge chip.
689 source "arch/mips/au1000/Kconfig"
690 source "arch/mips/basler/excite/Kconfig"
691 source "arch/mips/jazz/Kconfig"
692 source "arch/mips/lasat/Kconfig"
693 source "arch/mips/pmc-sierra/Kconfig"
694 source "arch/mips/sgi-ip27/Kconfig"
695 source "arch/mips/sibyte/Kconfig"
696 source "arch/mips/tx4927/Kconfig"
697 source "arch/mips/tx4938/Kconfig"
698 source "arch/mips/vr41xx/Kconfig"
702 config GENERIC_LOCKBREAK
705 depends on SMP && PREEMPT
707 config RWSEM_GENERIC_SPINLOCK
711 config RWSEM_XCHGADD_ALGORITHM
714 config ARCH_HAS_ILOG2_U32
718 config ARCH_HAS_ILOG2_U64
722 config ARCH_SUPPORTS_OPROFILE
724 default y if !MIPS_MT_SMTC
726 config GENERIC_FIND_NEXT_BIT
730 config GENERIC_HWEIGHT
734 config GENERIC_CALIBRATE_DELAY
738 config GENERIC_CLOCKEVENTS
746 config GENERIC_CMOS_UPDATE
750 config SCHED_NO_NO_OMIT_FRAME_POINTER
754 config GENERIC_HARDIRQS_NO__DO_IRQ
759 # Select some configuration options automatically based on user selections.
764 config ARCH_MAY_HAVE_PC_FDC
811 config DMA_NONCOHERENT
813 select DMA_NEED_PCI_MAP_STATE
815 config DMA_NEED_PCI_MAP_STATE
819 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
820 depends on SYS_HAS_EARLY_PRINTK
823 This option enables special console drivers which allow the kernel
824 to print messages very early in the bootup process.
826 This is useful for kernel debugging when your machine crashes very
827 early before the console code is initialized. For normal operation,
828 it is not recommended because it looks ugly on some machines and
829 doesn't cooperate with an X server. You should normally say N here,
830 unless you want to debug such a crash.
832 config SYS_HAS_EARLY_PRINTK
851 config MIPS_DISABLE_OBSOLETE_IDE
860 config GENERIC_ISA_DMA
862 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
864 config GENERIC_ISA_DMA_SUPPORT_BROKEN
866 select GENERIC_ISA_DMA
872 # Endianess selection. Sufficiently obscure so many users don't know what to
873 # answer,so we try hard to limit the available choices. Also the use of a
874 # choice statement should be more obvious to the user.
877 prompt "Endianess selection"
879 Some MIPS machines can be configured for either little or big endian
880 byte order. These modes require different kernels and a different
881 Linux distribution. In general there is one preferred byteorder for a
882 particular system but some systems are just as commonly used in the
883 one or the other endianness.
885 config CPU_BIG_ENDIAN
887 depends on SYS_SUPPORTS_BIG_ENDIAN
889 config CPU_LITTLE_ENDIAN
891 depends on SYS_SUPPORTS_LITTLE_ENDIAN
896 config SYS_SUPPORTS_APM_EMULATION
899 config SYS_SUPPORTS_BIG_ENDIAN
902 config SYS_SUPPORTS_LITTLE_ENDIAN
929 config MIPS_BOARDS_GEN
932 config PCI_GT64XXX_PCI0
935 config NO_EXCEPT_FILL
940 select HAS_TXX9_SERIAL
952 select DMA_NONCOHERENT
954 select SYS_HAS_CPU_MIPS32_R1
955 select SYS_HAS_EARLY_PRINTK
956 select SYS_SUPPORTS_32BIT_KERNEL
957 select GENERIC_HARDIRQS_NO__DO_IRQ
958 select SYS_SUPPORTS_KGDB
972 config SGI_HAS_DS1286
975 config SGI_HAS_INDYDOG
990 config DEFAULT_SGI_PARTITION
1002 config MIPS_L1_CACHE_SHIFT
1004 default "4" if MACH_DECSTATION
1005 default "7" if SGI_IP27 || SGI_IP28 || SNI_RM
1006 default "4" if PMC_MSP4200_EVAL
1009 config HAVE_STD_PC_SERIAL_PORT
1013 bool "ARC console support"
1014 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1018 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1023 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1032 menu "CPU selection"
1038 config CPU_LOONGSON2
1040 depends on SYS_HAS_CPU_LOONGSON2
1041 select CPU_SUPPORTS_32BIT_KERNEL
1042 select CPU_SUPPORTS_64BIT_KERNEL
1043 select CPU_SUPPORTS_HIGHMEM
1045 The Loongson 2E processor implements the MIPS III instruction set
1046 with many extensions.
1048 config CPU_MIPS32_R1
1049 bool "MIPS32 Release 1"
1050 depends on SYS_HAS_CPU_MIPS32_R1
1052 select CPU_HAS_PREFETCH
1053 select CPU_SUPPORTS_32BIT_KERNEL
1054 select CPU_SUPPORTS_HIGHMEM
1056 Choose this option to build a kernel for release 1 or later of the
1057 MIPS32 architecture. Most modern embedded systems with a 32-bit
1058 MIPS processor are based on a MIPS32 processor. If you know the
1059 specific type of processor in your system, choose those that one
1060 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1061 Release 2 of the MIPS32 architecture is available since several
1062 years so chances are you even have a MIPS32 Release 2 processor
1063 in which case you should choose CPU_MIPS32_R2 instead for better
1066 config CPU_MIPS32_R2
1067 bool "MIPS32 Release 2"
1068 depends on SYS_HAS_CPU_MIPS32_R2
1070 select CPU_HAS_PREFETCH
1071 select CPU_SUPPORTS_32BIT_KERNEL
1072 select CPU_SUPPORTS_HIGHMEM
1074 Choose this option to build a kernel for release 2 or later of the
1075 MIPS32 architecture. Most modern embedded systems with a 32-bit
1076 MIPS processor are based on a MIPS32 processor. If you know the
1077 specific type of processor in your system, choose those that one
1078 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1080 config CPU_MIPS64_R1
1081 bool "MIPS64 Release 1"
1082 depends on SYS_HAS_CPU_MIPS64_R1
1084 select CPU_HAS_PREFETCH
1085 select CPU_SUPPORTS_32BIT_KERNEL
1086 select CPU_SUPPORTS_64BIT_KERNEL
1087 select CPU_SUPPORTS_HIGHMEM
1089 Choose this option to build a kernel for release 1 or later of the
1090 MIPS64 architecture. Many modern embedded systems with a 64-bit
1091 MIPS processor are based on a MIPS64 processor. If you know the
1092 specific type of processor in your system, choose those that one
1093 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1094 Release 2 of the MIPS64 architecture is available since several
1095 years so chances are you even have a MIPS64 Release 2 processor
1096 in which case you should choose CPU_MIPS64_R2 instead for better
1099 config CPU_MIPS64_R2
1100 bool "MIPS64 Release 2"
1101 depends on SYS_HAS_CPU_MIPS64_R2
1103 select CPU_HAS_PREFETCH
1104 select CPU_SUPPORTS_32BIT_KERNEL
1105 select CPU_SUPPORTS_64BIT_KERNEL
1106 select CPU_SUPPORTS_HIGHMEM
1108 Choose this option to build a kernel for release 2 or later of the
1109 MIPS64 architecture. Many modern embedded systems with a 64-bit
1110 MIPS processor are based on a MIPS64 processor. If you know the
1111 specific type of processor in your system, choose those that one
1112 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1116 depends on SYS_HAS_CPU_R3000
1118 select CPU_SUPPORTS_32BIT_KERNEL
1119 select CPU_SUPPORTS_HIGHMEM
1121 Please make sure to pick the right CPU type. Linux/MIPS is not
1122 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1123 *not* work on R4000 machines and vice versa. However, since most
1124 of the supported machines have an R4000 (or similar) CPU, R4x00
1125 might be a safe bet. If the resulting kernel does not work,
1126 try to recompile with R3000.
1130 depends on SYS_HAS_CPU_TX39XX
1131 select CPU_SUPPORTS_32BIT_KERNEL
1135 depends on SYS_HAS_CPU_VR41XX
1136 select CPU_SUPPORTS_32BIT_KERNEL
1137 select CPU_SUPPORTS_64BIT_KERNEL
1139 The options selects support for the NEC VR4100 series of processors.
1140 Only choose this option if you have one of these processors as a
1141 kernel built with this option will not run on any other type of
1142 processor or vice versa.
1146 depends on SYS_HAS_CPU_R4300
1148 select CPU_SUPPORTS_32BIT_KERNEL
1149 select CPU_SUPPORTS_64BIT_KERNEL
1151 MIPS Technologies R4300-series processors.
1155 depends on SYS_HAS_CPU_R4X00
1157 select CPU_SUPPORTS_32BIT_KERNEL
1158 select CPU_SUPPORTS_64BIT_KERNEL
1160 MIPS Technologies R4000-series processors other than 4300, including
1161 the R4000, R4400, R4600, and 4700.
1165 depends on SYS_HAS_CPU_TX49XX
1167 select CPU_HAS_PREFETCH
1168 select CPU_SUPPORTS_32BIT_KERNEL
1169 select CPU_SUPPORTS_64BIT_KERNEL
1173 depends on SYS_HAS_CPU_R5000
1175 select CPU_SUPPORTS_32BIT_KERNEL
1176 select CPU_SUPPORTS_64BIT_KERNEL
1178 MIPS Technologies R5000-series processors other than the Nevada.
1182 depends on SYS_HAS_CPU_R5432
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_64BIT_KERNEL
1189 depends on EXPERIMENTAL
1191 depends on SYS_HAS_CPU_R6000
1192 select CPU_SUPPORTS_32BIT_KERNEL
1194 MIPS Technologies R6000 and R6000A series processors. Note these
1195 processors are extremely rare and the support for them is incomplete.
1199 depends on SYS_HAS_CPU_NEVADA
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1204 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1208 depends on EXPERIMENTAL
1209 depends on SYS_HAS_CPU_R8000
1211 select CPU_HAS_PREFETCH
1212 select CPU_SUPPORTS_64BIT_KERNEL
1214 MIPS Technologies R8000 processors. Note these processors are
1215 uncommon and the support for them is incomplete.
1219 depends on SYS_HAS_CPU_R10000
1221 select CPU_HAS_PREFETCH
1222 select CPU_SUPPORTS_32BIT_KERNEL
1223 select CPU_SUPPORTS_64BIT_KERNEL
1224 select CPU_SUPPORTS_HIGHMEM
1226 MIPS Technologies R10000-series processors.
1230 depends on SYS_HAS_CPU_RM7000
1232 select CPU_HAS_PREFETCH
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1235 select CPU_SUPPORTS_HIGHMEM
1239 depends on SYS_HAS_CPU_RM9000
1241 select CPU_HAS_PREFETCH
1242 select CPU_SUPPORTS_32BIT_KERNEL
1243 select CPU_SUPPORTS_64BIT_KERNEL
1244 select CPU_SUPPORTS_HIGHMEM
1245 select WEAK_ORDERING
1249 depends on SYS_HAS_CPU_SB1
1251 select CPU_SUPPORTS_32BIT_KERNEL
1252 select CPU_SUPPORTS_64BIT_KERNEL
1253 select CPU_SUPPORTS_HIGHMEM
1254 select WEAK_ORDERING
1258 config SYS_HAS_CPU_LOONGSON2
1261 config SYS_HAS_CPU_MIPS32_R1
1264 config SYS_HAS_CPU_MIPS32_R2
1267 config SYS_HAS_CPU_MIPS64_R1
1270 config SYS_HAS_CPU_MIPS64_R2
1273 config SYS_HAS_CPU_R3000
1276 config SYS_HAS_CPU_TX39XX
1279 config SYS_HAS_CPU_VR41XX
1282 config SYS_HAS_CPU_R4300
1285 config SYS_HAS_CPU_R4X00
1288 config SYS_HAS_CPU_TX49XX
1291 config SYS_HAS_CPU_R5000
1294 config SYS_HAS_CPU_R5432
1297 config SYS_HAS_CPU_R6000
1300 config SYS_HAS_CPU_NEVADA
1303 config SYS_HAS_CPU_R8000
1306 config SYS_HAS_CPU_R10000
1309 config SYS_HAS_CPU_RM7000
1312 config SYS_HAS_CPU_RM9000
1315 config SYS_HAS_CPU_SB1
1319 # CPU may reorder R->R, R->W, W->R, W->W
1320 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1322 config WEAK_ORDERING
1326 # CPU may reorder reads and writes beyond LL/SC
1327 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1329 config WEAK_REORDERING_BEYOND_LLSC
1334 # These two indicate any level of the MIPS32 and MIPS64 architecture
1338 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1342 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1345 # These two indicate the revision of the architecture, either Release 1 or Release 2
1349 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1353 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1355 config SYS_SUPPORTS_32BIT_KERNEL
1357 config SYS_SUPPORTS_64BIT_KERNEL
1359 config CPU_SUPPORTS_32BIT_KERNEL
1361 config CPU_SUPPORTS_64BIT_KERNEL
1368 prompt "Kernel code model"
1370 You should only select this option if you have a workload that
1371 actually benefits from 64-bit processing or if your machine has
1372 large memory. You will only be presented a single option in this
1373 menu if your system does not support both 32-bit and 64-bit kernels.
1376 bool "32-bit kernel"
1377 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1380 Select this option if you want to build a 32-bit kernel.
1382 bool "64-bit kernel"
1383 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1385 Select this option if you want to build a 64-bit kernel.
1390 prompt "Kernel page size"
1391 default PAGE_SIZE_4KB
1393 config PAGE_SIZE_4KB
1396 This option select the standard 4kB Linux page size. On some
1397 R3000-family processors this is the only available page size. Using
1398 4kB page size will minimize memory consumption and is therefore
1399 recommended for low memory systems.
1401 config PAGE_SIZE_8KB
1403 depends on EXPERIMENTAL && CPU_R8000
1405 Using 8kB page size will result in higher performance kernel at
1406 the price of higher memory consumption. This option is available
1407 only on the R8000 processor. Not that at the time of this writing
1408 this option is still high experimental; there are also issues with
1409 compatibility of user applications.
1411 config PAGE_SIZE_16KB
1413 depends on !CPU_R3000 && !CPU_TX39XX
1415 Using 16kB page size will result in higher performance kernel at
1416 the price of higher memory consumption. This option is available on
1417 all non-R3000 family processors. Note that you will need a suitable
1418 Linux distribution to support this.
1420 config PAGE_SIZE_64KB
1422 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1424 Using 64kB page size will result in higher performance kernel at
1425 the price of higher memory consumption. This option is available on
1426 all non-R3000 family processor. Not that at the time of this
1427 writing this option is still high experimental.
1434 config IP22_CPU_SCACHE
1439 # Support for a MIPS32 / MIPS64 style S-caches
1441 config MIPS_CPU_SCACHE
1445 config R5000_CPU_SCACHE
1449 config RM7000_CPU_SCACHE
1453 config SIBYTE_DMA_PAGEOPS
1454 bool "Use DMA to clear/copy pages"
1457 Instead of using the CPU to zero and copy pages, use a Data Mover
1458 channel. These DMA channels are otherwise unused by the standard
1459 SiByte Linux port. Seems to give a small performance benefit.
1461 config CPU_HAS_PREFETCH
1465 prompt "MIPS MT options"
1467 config MIPS_MT_DISABLED
1468 bool "Disable multithreading support."
1470 Use this option if your workload can't take advantage of
1471 MIPS hardware multithreading support. On systems that don't have
1472 the option of an MT-enabled processor this option will be the only
1473 option in this menu.
1476 bool "Use 1 TC on each available VPE for SMP"
1477 depends on SYS_SUPPORTS_MULTITHREADING
1478 select CPU_MIPSR2_IRQ_VI
1479 select CPU_MIPSR2_IRQ_EI
1481 select NR_CPUS_DEFAULT_2
1483 select SYS_SUPPORTS_SCHED_SMT if SMP
1484 select SYS_SUPPORTS_SMP
1487 This is a kernel model which is also known a VSMP or lately
1488 has been marketesed into SMVP.
1491 bool "SMTC: Use all TCs on all VPEs for SMP"
1492 depends on CPU_MIPS32_R2
1493 #depends on CPU_MIPS64_R2 # once there is hardware ...
1494 depends on SYS_SUPPORTS_MULTITHREADING
1495 select GENERIC_CLOCKEVENTS_BROADCAST
1496 select CPU_MIPSR2_IRQ_VI
1497 select CPU_MIPSR2_IRQ_EI
1499 select NR_CPUS_DEFAULT_8
1501 select SYS_SUPPORTS_SMP
1504 This is a kernel model which is known a SMTC or lately has been
1505 marketesed into SMVP.
1513 bool "SMT (multithreading) scheduler support"
1514 depends on SYS_SUPPORTS_SCHED_SMT
1517 SMT scheduler support improves the CPU scheduler's decision making
1518 when dealing with MIPS MT enabled cores at a cost of slightly
1519 increased overhead in some places. If unsure say N here.
1521 config SYS_SUPPORTS_SCHED_SMT
1525 config SYS_SUPPORTS_MULTITHREADING
1528 config MIPS_MT_FPAFF
1529 bool "Dynamic FPU affinity for FP-intensive threads"
1531 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1533 config MIPS_VPE_LOADER
1534 bool "VPE loader support."
1535 depends on SYS_SUPPORTS_MULTITHREADING
1536 select CPU_MIPSR2_IRQ_VI
1537 select CPU_MIPSR2_IRQ_EI
1540 Includes a loader for loading an elf relocatable object
1541 onto another VPE and running it.
1543 config MIPS_MT_SMTC_INSTANT_REPLAY
1544 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1545 depends on MIPS_MT_SMTC && !PREEMPT
1548 SMTC pseudo-interrupts between TCs are deferred and queued
1549 if the target TC is interrupt-inhibited (IXMT). In the first
1550 SMTC prototypes, these queued IPIs were serviced on return
1551 to user mode, or on entry into the kernel idle loop. The
1552 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1553 processing, which adds runtime overhead (hence the option to turn
1554 it off), but ensures that IPIs are handled promptly even under
1555 heavy I/O interrupt load.
1557 config MIPS_MT_SMTC_IM_BACKSTOP
1558 bool "Use per-TC register bits as backstop for inhibited IM bits"
1559 depends on MIPS_MT_SMTC
1562 To support multiple TC microthreads acting as "CPUs" within
1563 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1564 during interrupt handling. To support legacy drivers and interrupt
1565 controller management code, SMTC has a "backstop" to track and
1566 if necessary restore the interrupt mask. This has some performance
1567 impact on interrupt service overhead. Disable it only if you know
1570 config MIPS_MT_SMTC_IRQAFF
1571 bool "Support IRQ affinity API"
1572 depends on MIPS_MT_SMTC
1575 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1576 for SMTC Linux kernel. Requires platform support, of which
1577 an example can be found in the MIPS kernel i8259 and Malta
1578 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1579 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1580 interrupt dispatch, and should be used only if you know what
1583 config MIPS_VPE_LOADER_TOM
1584 bool "Load VPE program into memory hidden from linux"
1585 depends on MIPS_VPE_LOADER
1588 The loader can use memory that is present but has been hidden from
1589 Linux using the kernel command line option "mem=xxMB". It's up to
1590 you to ensure the amount you put in the option and the space your
1591 program requires is less or equal to the amount physically present.
1593 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1594 config MIPS_VPE_APSP_API
1595 bool "Enable support for AP/SP API (RTLX)"
1596 depends on MIPS_VPE_LOADER
1599 config MIPS_APSP_KSPD
1601 depends on MIPS_VPE_APSP_API
1604 KSPD is a kernel daemon that accepts syscall requests from the SP
1605 side, actions them and returns the results. It also handles the
1606 "exit" syscall notifying other kernel modules the SP program is
1607 exiting. You probably want to say yes here.
1609 config SB1_PASS_1_WORKAROUNDS
1611 depends on CPU_SB1_PASS_1
1614 config SB1_PASS_2_WORKAROUNDS
1616 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1619 config SB1_PASS_2_1_WORKAROUNDS
1621 depends on CPU_SB1 && CPU_SB1_PASS_2
1624 config 64BIT_PHYS_ADDR
1630 config CPU_HAS_SMARTMIPS
1631 depends on SYS_SUPPORTS_SMARTMIPS
1632 bool "Support for the SmartMIPS ASE"
1634 SmartMIPS is a extension of the MIPS32 architecture aimed at
1635 increased security at both hardware and software level for
1636 smartcards. Enabling this option will allow proper use of the
1637 SmartMIPS instructions by Linux applications. However a kernel with
1638 this option will not work on a MIPS core without SmartMIPS core. If
1639 you don't know you probably don't have SmartMIPS and should say N
1646 # Vectored interrupt mode is an R2 feature
1648 config CPU_MIPSR2_IRQ_VI
1652 # Extended interrupt mode is an R2 feature
1654 config CPU_MIPSR2_IRQ_EI
1659 depends on !CPU_R3000
1662 config GENERIC_CLOCKEVENTS_BROADCAST
1668 config CPU_DADDI_WORKAROUNDS
1671 config CPU_R4000_WORKAROUNDS
1673 select CPU_R4400_WORKAROUNDS
1675 config CPU_R4400_WORKAROUNDS
1679 # Use the generic interrupt handling code in kernel/irq/:
1681 config GENERIC_HARDIRQS
1685 config GENERIC_IRQ_PROBE
1693 # - Highmem only makes sense for the 32-bit kernel.
1694 # - The current highmem code will only work properly on physically indexed
1695 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1696 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1697 # moment we protect the user and offer the highmem option only on machines
1698 # where it's known to be safe. This will not offer highmem on a few systems
1699 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1700 # indexed CPUs but we're playing safe.
1701 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1702 # know they might have memory configurations that could make use of highmem
1706 bool "High Memory Support"
1707 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1709 config CPU_SUPPORTS_HIGHMEM
1712 config SYS_SUPPORTS_HIGHMEM
1715 config SYS_SUPPORTS_SMARTMIPS
1718 config ARCH_FLATMEM_ENABLE
1722 config ARCH_DISCONTIGMEM_ENABLE
1724 default y if SGI_IP27
1726 Say Y to support efficient handling of discontiguous physical memory,
1727 for architectures which are either NUMA (Non-Uniform Memory Access)
1728 or have huge holes in the physical address space for other reasons.
1729 See <file:Documentation/vm/numa> for more.
1731 config ARCH_POPULATES_NODE_MAP
1734 config ARCH_SPARSEMEM_ENABLE
1736 select SPARSEMEM_STATIC
1740 depends on SYS_SUPPORTS_NUMA
1742 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1743 Access). This option improves performance on systems with more
1744 than two nodes; on two node systems it is generally better to
1745 leave it disabled; on single node systems disable this option
1748 config SYS_SUPPORTS_NUMA
1754 depends on NEED_MULTIPLE_NODES
1759 bool "Multi-Processing support"
1760 depends on SYS_SUPPORTS_SMP
1763 This enables support for systems with more than one CPU. If you have
1764 a system with only one CPU, like most personal computers, say N. If
1765 you have a system with more than one CPU, say Y.
1767 If you say N here, the kernel will run on single and multiprocessor
1768 machines, but will use only one CPU of a multiprocessor machine. If
1769 you say Y here, the kernel will run on many, but not all,
1770 singleprocessor machines. On a singleprocessor machine, the kernel
1771 will run faster if you say N here.
1773 People using multiprocessor machines who say Y here should also say
1774 Y to "Enhanced Real Time Clock Support", below.
1776 See also the SMP-HOWTO available at
1777 <http://www.tldp.org/docs.html#howto>.
1779 If you don't know what to do here, say N.
1784 config SYS_SUPPORTS_SMP
1787 config NR_CPUS_DEFAULT_1
1790 config NR_CPUS_DEFAULT_2
1793 config NR_CPUS_DEFAULT_4
1796 config NR_CPUS_DEFAULT_8
1799 config NR_CPUS_DEFAULT_16
1802 config NR_CPUS_DEFAULT_32
1805 config NR_CPUS_DEFAULT_64
1809 int "Maximum number of CPUs (2-64)"
1810 range 1 64 if NR_CPUS_DEFAULT_1
1812 default "1" if NR_CPUS_DEFAULT_1
1813 default "2" if NR_CPUS_DEFAULT_2
1814 default "4" if NR_CPUS_DEFAULT_4
1815 default "8" if NR_CPUS_DEFAULT_8
1816 default "16" if NR_CPUS_DEFAULT_16
1817 default "32" if NR_CPUS_DEFAULT_32
1818 default "64" if NR_CPUS_DEFAULT_64
1820 This allows you to specify the maximum number of CPUs which this
1821 kernel will support. The maximum supported value is 32 for 32-bit
1822 kernel and 64 for 64-bit kernels; the minimum value which makes
1823 sense is 1 for Qemu (useful only for kernel debugging purposes)
1824 and 2 for all others.
1826 This is purely to save memory - each supported CPU adds
1827 approximately eight kilobytes to the kernel image. For best
1828 performance should round up your number of processors to the next
1832 bool "MIPS CMP framework support"
1835 select SYS_SUPPORTS_SCHED_SMT
1836 select WEAK_ORDERING
1839 This is a placeholder option for the GCMP work. It will need to
1840 be handled differently...
1842 source "kernel/time/Kconfig"
1845 # Timer Interrupt Frequency Configuration
1849 prompt "Timer frequency"
1852 Allows the configuration of the timer frequency.
1855 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1858 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1861 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1864 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1867 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1870 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1873 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1877 config SYS_SUPPORTS_48HZ
1880 config SYS_SUPPORTS_100HZ
1883 config SYS_SUPPORTS_128HZ
1886 config SYS_SUPPORTS_250HZ
1889 config SYS_SUPPORTS_256HZ
1892 config SYS_SUPPORTS_1000HZ
1895 config SYS_SUPPORTS_1024HZ
1898 config SYS_SUPPORTS_ARBIT_HZ
1900 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1901 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1902 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1903 !SYS_SUPPORTS_1024HZ
1908 default 100 if HZ_100
1909 default 128 if HZ_128
1910 default 250 if HZ_250
1911 default 256 if HZ_256
1912 default 1000 if HZ_1000
1913 default 1024 if HZ_1024
1915 source "kernel/Kconfig.preempt"
1917 config MIPS_INSANE_LARGE
1918 bool "Support for large 64-bit configurations"
1919 depends on CPU_R10000 && 64BIT
1921 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1922 previous 64-bit processors which only supported 40 bit / 1TB. If you
1923 need processes of more than 1TB virtual address space, say Y here.
1924 This will result in additional memory usage, so it is not
1925 recommended for normal users.
1928 bool "Kexec system call (EXPERIMENTAL)"
1929 depends on EXPERIMENTAL
1931 kexec is a system call that implements the ability to shutdown your
1932 current kernel, and to start another kernel. It is like a reboot
1933 but it is independent of the system firmware. And like a reboot
1934 you can start any kernel with it, not just Linux.
1936 The name comes from the similarity to the exec system call.
1938 It is an ongoing process to be certain the hardware in a machine
1939 is properly shutdown, so do not be surprised if this code does not
1940 initially work for you. It may help to enable device hotplugging
1941 support. As of this writing the exact hardware interface is
1942 strongly in flux, so no good recommendation can be made.
1945 bool "Enable seccomp to safely compute untrusted bytecode"
1949 This kernel feature is useful for number crunching applications
1950 that may need to compute untrusted bytecode during their
1951 execution. By using pipes or other transports made available to
1952 the process as file descriptors supporting the read/write
1953 syscalls, it's possible to isolate those applications in
1954 their own address space using seccomp. Once seccomp is
1955 enabled via /proc/<pid>/seccomp, it cannot be disabled
1956 and the task is only allowed to execute a few safe syscalls
1957 defined by each seccomp mode.
1959 If unsure, say Y. Only embedded should say N here.
1963 config RWSEM_GENERIC_SPINLOCK
1967 config LOCKDEP_SUPPORT
1971 config STACKTRACE_SUPPORT
1975 source "init/Kconfig"
1977 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1985 bool "Support for PCI controller"
1986 depends on HW_HAS_PCI
1989 Find out whether you have a PCI motherboard. PCI is the name of a
1990 bus system, i.e. the way the CPU talks to the other stuff inside
1991 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1997 source "drivers/pci/Kconfig"
2000 # ISA support is now enabled via select. Too many systems still have the one
2001 # or other ISA chip on the board that users don't know about so don't expect
2002 # users to choose the right thing ...
2009 depends on HW_HAS_EISA
2011 select GENERIC_ISA_DMA
2013 The Extended Industry Standard Architecture (EISA) bus was
2014 developed as an open alternative to the IBM MicroChannel bus.
2016 The EISA bus provided some of the features of the IBM MicroChannel
2017 bus while maintaining backward compatibility with cards made for
2018 the older ISA bus. The EISA bus saw limited use between 1988 and
2019 1995 when it was made obsolete by the PCI bus.
2021 Say Y here if you are building a kernel for an EISA-based machine.
2025 source "drivers/eisa/Kconfig"
2028 bool "TURBOchannel support"
2029 depends on MACH_DECSTATION
2031 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2032 processors. Documentation on writing device drivers for TurboChannel
2034 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2037 # bool "Access.Bus support"
2050 source "drivers/pcmcia/Kconfig"
2052 source "drivers/pci/hotplug/Kconfig"
2056 menu "Executable file formats"
2058 source "fs/Kconfig.binfmt"
2064 bool "Include IRIX binary compatibility"
2065 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2067 config MIPS32_COMPAT
2068 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2071 Select this option if you want Linux/MIPS 32-bit binary
2072 compatibility. Since all software available for Linux/MIPS is
2073 currently 32-bit you should say Y here.
2077 depends on MIPS32_COMPAT
2080 config SYSVIPC_COMPAT
2082 depends on COMPAT && SYSVIPC
2086 bool "Kernel support for o32 binaries"
2087 depends on MIPS32_COMPAT
2089 Select this option if you want to run o32 binaries. These are pure
2090 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2091 existing binaries are in this format.
2096 bool "Kernel support for n32 binaries"
2097 depends on MIPS32_COMPAT
2099 Select this option if you want to run n32 binaries. These are
2100 64-bit binaries using 32-bit quantities for addressing and certain
2101 data that would normally be 64-bit. They are used in special
2108 default y if MIPS32_O32 || MIPS32_N32
2112 menu "Power management options"
2114 config ARCH_SUSPEND_POSSIBLE
2118 source "kernel/power/Kconfig"
2122 source "net/Kconfig"
2124 source "drivers/Kconfig"
2128 source "arch/mips/Kconfig.debug"
2130 source "security/Kconfig"
2132 source "crypto/Kconfig"
2134 source "lib/Kconfig"