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
86 select CPU_DADDI_WORKAROUNDS if 64BIT
87 select CPU_R4000_WORKAROUNDS if 64BIT
88 select CPU_R4400_WORKAROUNDS if 64BIT
89 select DMA_NONCOHERENT
92 select SYS_HAS_CPU_R3000
93 select SYS_HAS_CPU_R4X00
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
97 select SYS_SUPPORTS_128HZ
98 select SYS_SUPPORTS_256HZ
99 select SYS_SUPPORTS_1024HZ
101 This enables support for DEC's MIPS based workstations. For details
102 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
103 DECstation porting pages on <http://decstation.unix-ag.org/>.
105 If you have one of the following DECstation Models you definitely
106 want to choose R4xx0 for the CPU Type:
113 otherwise choose R3000.
116 bool "Jazz family of machines"
119 select ARCH_MAY_HAVE_PC_FDC
122 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
123 select GENERIC_ISA_DMA
128 select SYS_HAS_CPU_R4X00
129 select SYS_SUPPORTS_32BIT_KERNEL
130 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
131 select SYS_SUPPORTS_100HZ
132 select GENERIC_HARDIRQS_NO__DO_IRQ
134 This a family of machines based on the MIPS R4030 chipset which was
135 used by several vendors to build RISC/os and Windows NT workstations.
136 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
137 Olivetti M700-10 workstations.
140 bool "LASAT Networks platforms"
143 select DMA_NONCOHERENT
144 select SYS_HAS_EARLY_PRINTK
147 select PCI_GT64XXX_PCI0
149 select R5000_CPU_SCACHE
150 select SYS_HAS_CPU_R5000
151 select SYS_SUPPORTS_32BIT_KERNEL
152 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
153 select SYS_SUPPORTS_LITTLE_ENDIAN
154 select GENERIC_HARDIRQS_NO__DO_IRQ
157 bool "Lemote Fulong mini-PC"
158 select ARCH_SPARSEMEM_ENABLE
161 select SYS_HAS_CPU_LOONGSON2
162 select DMA_NONCOHERENT
165 select HAVE_STD_PC_SERIAL_PORT
170 select SYS_SUPPORTS_32BIT_KERNEL
171 select SYS_SUPPORTS_64BIT_KERNEL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select SYS_SUPPORTS_HIGHMEM
174 select SYS_HAS_EARLY_PRINTK
175 select GENERIC_HARDIRQS_NO__DO_IRQ
176 select GENERIC_ISA_DMA_SUPPORT_BROKEN
179 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
183 bool "MIPS Atlas board"
188 select DMA_NONCOHERENT
189 select SYS_HAS_EARLY_PRINTK
192 select MIPS_BOARDS_GEN
194 select PCI_GT64XXX_PCI0
196 select RM7000_CPU_SCACHE
198 select SYS_HAS_CPU_MIPS32_R1
199 select SYS_HAS_CPU_MIPS32_R2
200 select SYS_HAS_CPU_MIPS64_R1
201 select SYS_HAS_CPU_NEVADA
202 select SYS_HAS_CPU_RM7000
203 select SYS_SUPPORTS_32BIT_KERNEL
204 select SYS_SUPPORTS_64BIT_KERNEL
205 select SYS_SUPPORTS_BIG_ENDIAN
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
208 select SYS_SUPPORTS_SMARTMIPS
209 select GENERIC_HARDIRQS_NO__DO_IRQ
211 This enables support for the MIPS Technologies Atlas evaluation
215 bool "MIPS Malta board"
216 select ARCH_MAY_HAVE_PC_FDC
221 select DMA_NONCOHERENT
222 select GENERIC_ISA_DMA
228 select MIPS_BOARDS_GEN
230 select MIPS_CPU_SCACHE
231 select PCI_GT64XXX_PCI0
234 select SYS_HAS_CPU_MIPS32_R1
235 select SYS_HAS_CPU_MIPS32_R2
236 select SYS_HAS_CPU_MIPS64_R1
237 select SYS_HAS_CPU_NEVADA
238 select SYS_HAS_CPU_RM7000
239 select SYS_HAS_EARLY_PRINTK
240 select SYS_SUPPORTS_32BIT_KERNEL
241 select SYS_SUPPORTS_64BIT_KERNEL
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_LITTLE_ENDIAN
244 select SYS_SUPPORTS_MULTITHREADING
245 select SYS_SUPPORTS_SMARTMIPS
247 This enables support for the MIPS Technologies Malta evaluation
251 bool "MIPS SEAD board"
255 select DMA_NONCOHERENT
256 select SYS_HAS_EARLY_PRINTK
257 select MIPS_BOARDS_GEN
258 select SYS_HAS_CPU_MIPS32_R1
259 select SYS_HAS_CPU_MIPS32_R2
260 select SYS_HAS_CPU_MIPS64_R1
261 select SYS_SUPPORTS_32BIT_KERNEL
262 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
263 select SYS_SUPPORTS_BIG_ENDIAN
264 select SYS_SUPPORTS_LITTLE_ENDIAN
265 select SYS_SUPPORTS_SMARTMIPS
267 This enables support for the MIPS Technologies SEAD evaluation
271 bool 'MIPS simulator (MIPSsim)'
274 select DMA_NONCOHERENT
275 select SYS_HAS_EARLY_PRINTK
278 select SYS_HAS_CPU_MIPS32_R1
279 select SYS_HAS_CPU_MIPS32_R2
280 select SYS_HAS_EARLY_PRINTK
281 select SYS_SUPPORTS_32BIT_KERNEL
282 select SYS_SUPPORTS_BIG_ENDIAN
283 select SYS_SUPPORTS_MULTITHREADING
284 select SYS_SUPPORTS_LITTLE_ENDIAN
286 This option enables support for MIPS Technologies MIPSsim software
290 bool "NEC EMMA2RH Mark-eins"
293 select DMA_NONCOHERENT
297 select SYS_SUPPORTS_32BIT_KERNEL
298 select SYS_SUPPORTS_BIG_ENDIAN
299 select SYS_SUPPORTS_LITTLE_ENDIAN
300 select SYS_HAS_CPU_R5000
302 This enables support for the R5432-based NEC Mark-eins
303 boards with R5500 CPU.
306 bool "NEC VR4100 series based machines"
309 select SYS_HAS_CPU_VR41XX
310 select GENERIC_HARDIRQS_NO__DO_IRQ
313 bool "NXP PNX8550 based JBS board"
315 select SYS_SUPPORTS_LITTLE_ENDIAN
317 config PNX8550_STB810
318 bool "NXP PNX8550 based STB810 board"
320 select SYS_SUPPORTS_LITTLE_ENDIAN
323 bool "PMC-Sierra MSP chipsets"
324 depends on EXPERIMENTAL
325 select DMA_NONCOHERENT
327 select NO_EXCEPT_FILL
329 select SYS_HAS_CPU_MIPS32_R1
330 select SYS_HAS_CPU_MIPS32_R2
331 select SYS_SUPPORTS_32BIT_KERNEL
332 select SYS_SUPPORTS_BIG_ENDIAN
333 select SYS_SUPPORTS_KGDB
336 select SERIAL_8250_CONSOLE
338 This adds support for the PMC-Sierra family of Multi-Service
339 Processor System-On-A-Chips. These parts include a number
340 of integrated peripherals, interfaces and DSPs in addition to
341 a variety of MIPS cores.
344 bool "PMC-Sierra Yosemite eval board"
353 select SYS_HAS_CPU_RM9000
354 select SYS_HAS_EARLY_PRINTK
355 select SYS_SUPPORTS_32BIT_KERNEL
356 select SYS_SUPPORTS_64BIT_KERNEL
357 select SYS_SUPPORTS_BIG_ENDIAN
358 select SYS_SUPPORTS_HIGHMEM
359 select SYS_SUPPORTS_KGDB
360 select SYS_SUPPORTS_SMP
362 Yosemite is an evaluation board for the RM9000x2 processor
363 manufactured by PMC-Sierra.
366 bool "SGI IP22 (Indy/Indigo2)"
372 select DEFAULT_SGI_PARTITION
373 select DMA_NONCOHERENT
377 select IP22_CPU_SCACHE
379 select GENERIC_ISA_DMA_SUPPORT_BROKEN
380 select SGI_HAS_DS1286
382 select SGI_HAS_INDYDOG
387 select SYS_HAS_CPU_R4X00
388 select SYS_HAS_CPU_R5000
389 select SYS_HAS_EARLY_PRINTK
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_64BIT_KERNEL
392 select SYS_SUPPORTS_BIG_ENDIAN
394 This are the SGI Indy, Challenge S and Indigo2, as well as certain
395 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
396 that runs on these, say Y here.
399 bool "SGI IP27 (Origin200/2000)"
403 select DEFAULT_SGI_PARTITION
405 select SYS_HAS_EARLY_PRINTK
407 select NR_CPUS_DEFAULT_64
408 select SYS_HAS_CPU_R10000
409 select SYS_SUPPORTS_64BIT_KERNEL
410 select SYS_SUPPORTS_BIG_ENDIAN
411 select SYS_SUPPORTS_KGDB
412 select SYS_SUPPORTS_NUMA
413 select SYS_SUPPORTS_SMP
414 select GENERIC_HARDIRQS_NO__DO_IRQ
416 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
417 workstations. To compile a Linux kernel that runs on these, say Y
421 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
422 depends on EXPERIMENTAL
428 select DEFAULT_SGI_PARTITION
429 select DMA_NONCOHERENT
430 select GENERIC_ISA_DMA_SUPPORT_BROKEN
435 select SGI_HAS_DS1286
437 select SGI_HAS_INDYDOG
442 select SYS_HAS_CPU_R10000
443 select SYS_HAS_EARLY_PRINTK
444 select SYS_SUPPORTS_64BIT_KERNEL
445 select SYS_SUPPORTS_BIG_ENDIAN
447 This is the SGI Indigo2 with R10000 processor. To compile a Linux
448 kernel that runs on these, say Y here.
457 select DMA_NONCOHERENT
460 select R5000_CPU_SCACHE
461 select RM7000_CPU_SCACHE
462 select SYS_HAS_CPU_R5000
463 select SYS_HAS_CPU_R10000 if BROKEN
464 select SYS_HAS_CPU_RM7000
465 select SYS_HAS_CPU_NEVADA
466 select SYS_SUPPORTS_64BIT_KERNEL
467 select SYS_SUPPORTS_BIG_ENDIAN
469 If you want this kernel to run on SGI O2 workstation, say Y here.
472 bool "Sibyte BCM91120C-CRhine"
473 depends on EXPERIMENTAL
476 select SIBYTE_BCM1120
478 select SYS_HAS_CPU_SB1
479 select SYS_SUPPORTS_BIG_ENDIAN
480 select SYS_SUPPORTS_LITTLE_ENDIAN
483 bool "Sibyte BCM91120x-Carmel"
484 depends on EXPERIMENTAL
487 select SIBYTE_BCM1120
489 select SYS_HAS_CPU_SB1
490 select SYS_SUPPORTS_BIG_ENDIAN
491 select SYS_SUPPORTS_LITTLE_ENDIAN
494 bool "Sibyte BCM91125C-CRhone"
495 depends on EXPERIMENTAL
498 select SIBYTE_BCM1125
500 select SYS_HAS_CPU_SB1
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_HIGHMEM
503 select SYS_SUPPORTS_LITTLE_ENDIAN
506 bool "Sibyte BCM91125E-Rhone"
507 depends on EXPERIMENTAL
510 select SIBYTE_BCM1125H
512 select SYS_HAS_CPU_SB1
513 select SYS_SUPPORTS_BIG_ENDIAN
514 select SYS_SUPPORTS_LITTLE_ENDIAN
517 bool "Sibyte BCM91250A-SWARM"
520 select NR_CPUS_DEFAULT_2
523 select SYS_HAS_CPU_SB1
524 select SYS_SUPPORTS_BIG_ENDIAN
525 select SYS_SUPPORTS_HIGHMEM
526 select SYS_SUPPORTS_KGDB
527 select SYS_SUPPORTS_LITTLE_ENDIAN
528 select ZONE_DMA32 if 64BIT
530 config SIBYTE_LITTLESUR
531 bool "Sibyte BCM91250C2-LittleSur"
532 depends on EXPERIMENTAL
535 select NR_CPUS_DEFAULT_2
538 select SYS_HAS_CPU_SB1
539 select SYS_SUPPORTS_BIG_ENDIAN
540 select SYS_SUPPORTS_HIGHMEM
541 select SYS_SUPPORTS_LITTLE_ENDIAN
543 config SIBYTE_SENTOSA
544 bool "Sibyte BCM91250E-Sentosa"
545 depends on EXPERIMENTAL
548 select NR_CPUS_DEFAULT_2
551 select SYS_HAS_CPU_SB1
552 select SYS_SUPPORTS_BIG_ENDIAN
553 select SYS_SUPPORTS_LITTLE_ENDIAN
556 bool "Sibyte BCM91480B-BigSur"
559 select NR_CPUS_DEFAULT_4
560 select SIBYTE_BCM1x80
562 select SYS_HAS_CPU_SB1
563 select SYS_SUPPORTS_BIG_ENDIAN
564 select SYS_SUPPORTS_HIGHMEM
565 select SYS_SUPPORTS_LITTLE_ENDIAN
566 select ZONE_DMA32 if 64BIT
569 bool "SNI RM200/300/400"
570 select ARC if CPU_LITTLE_ENDIAN
571 select ARC32 if CPU_LITTLE_ENDIAN
572 select SNIPROM if CPU_BIG_ENDIAN
573 select ARCH_MAY_HAVE_PC_FDC
577 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
578 select DMA_NONCOHERENT
579 select GENERIC_ISA_DMA
586 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
587 select SYS_HAS_CPU_R4X00
588 select SYS_HAS_CPU_R5000
589 select SYS_HAS_CPU_R10000
590 select R5000_CPU_SCACHE
591 select SYS_HAS_EARLY_PRINTK
592 select SYS_SUPPORTS_32BIT_KERNEL
593 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
594 select SYS_SUPPORTS_BIG_ENDIAN
595 select SYS_SUPPORTS_HIGHMEM
596 select SYS_SUPPORTS_LITTLE_ENDIAN
598 The SNI RM200/300/400 are MIPS-based machines manufactured by
599 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
600 Technology and now in turn merged with Fujitsu. Say Y here to
601 support this machine type.
603 config TOSHIBA_JMR3927
604 bool "Toshiba JMR-TX3927 board"
606 select DMA_NONCOHERENT
611 select SYS_HAS_CPU_TX39XX
612 select SYS_SUPPORTS_32BIT_KERNEL
613 select SYS_SUPPORTS_LITTLE_ENDIAN
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select GENERIC_HARDIRQS_NO__DO_IRQ
617 config TOSHIBA_RBTX4927
618 bool "Toshiba RBTX49[23]7 board"
622 select DMA_NONCOHERENT
623 select HAS_TXX9_SERIAL
627 select I8259 if TOSHIBA_FPCIB0
629 select SYS_HAS_CPU_TX49XX
630 select SYS_SUPPORTS_32BIT_KERNEL
631 select SYS_SUPPORTS_64BIT_KERNEL
632 select SYS_SUPPORTS_LITTLE_ENDIAN
633 select SYS_SUPPORTS_BIG_ENDIAN
634 select SYS_SUPPORTS_KGDB
635 select GENERIC_HARDIRQS_NO__DO_IRQ
637 This Toshiba board is based on the TX4927 processor. Say Y here to
638 support this machine type
640 config TOSHIBA_RBTX4938
641 bool "Toshiba RBTX4938 board"
645 select DMA_NONCOHERENT
646 select HAS_TXX9_SERIAL
651 select SYS_HAS_CPU_TX49XX
652 select SYS_SUPPORTS_32BIT_KERNEL
653 select SYS_SUPPORTS_LITTLE_ENDIAN
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_KGDB
656 select GENERIC_HARDIRQS_NO__DO_IRQ
659 This Toshiba board is based on the TX4938 processor. Say Y here to
660 support this machine type
663 bool "Wind River PPMC board"
668 select DMA_NONCOHERENT
670 select PCI_GT64XXX_PCI0
672 select SYS_HAS_CPU_MIPS32_R1
673 select SYS_HAS_CPU_MIPS32_R2
674 select SYS_HAS_CPU_MIPS64_R1
675 select SYS_HAS_CPU_NEVADA
676 select SYS_HAS_CPU_RM7000
677 select SYS_SUPPORTS_32BIT_KERNEL
678 select SYS_SUPPORTS_64BIT_KERNEL
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_LITTLE_ENDIAN
682 This enables support for the Wind River MIPS32 4KC PPMC evaluation
683 board, which is based on GT64120 bridge chip.
687 source "arch/mips/au1000/Kconfig"
688 source "arch/mips/basler/excite/Kconfig"
689 source "arch/mips/jazz/Kconfig"
690 source "arch/mips/lasat/Kconfig"
691 source "arch/mips/pmc-sierra/Kconfig"
692 source "arch/mips/sgi-ip27/Kconfig"
693 source "arch/mips/sibyte/Kconfig"
694 source "arch/mips/tx4927/Kconfig"
695 source "arch/mips/tx4938/Kconfig"
696 source "arch/mips/vr41xx/Kconfig"
700 config GENERIC_LOCKBREAK
703 depends on SMP && PREEMPT
705 config RWSEM_GENERIC_SPINLOCK
709 config RWSEM_XCHGADD_ALGORITHM
712 config ARCH_HAS_ILOG2_U32
716 config ARCH_HAS_ILOG2_U64
720 config ARCH_SUPPORTS_OPROFILE
722 default y if !MIPS_MT_SMTC
724 config GENERIC_FIND_NEXT_BIT
728 config GENERIC_HWEIGHT
732 config GENERIC_CALIBRATE_DELAY
736 config GENERIC_CLOCKEVENTS
744 config GENERIC_CMOS_UPDATE
748 config SCHED_NO_NO_OMIT_FRAME_POINTER
752 config GENERIC_HARDIRQS_NO__DO_IRQ
757 # Select some configuration options automatically based on user selections.
762 config ARCH_MAY_HAVE_PC_FDC
801 config DMA_NONCOHERENT
803 select DMA_NEED_PCI_MAP_STATE
805 config DMA_NEED_PCI_MAP_STATE
809 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
810 depends on SYS_HAS_EARLY_PRINTK
813 This option enables special console drivers which allow the kernel
814 to print messages very early in the bootup process.
816 This is useful for kernel debugging when your machine crashes very
817 early before the console code is initialized. For normal operation,
818 it is not recommended because it looks ugly on some machines and
819 doesn't cooperate with an X server. You should normally say N here,
820 unless you want to debug such a crash.
822 config SYS_HAS_EARLY_PRINTK
841 config MIPS_DISABLE_OBSOLETE_IDE
850 config GENERIC_ISA_DMA
852 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
854 config GENERIC_ISA_DMA_SUPPORT_BROKEN
856 select GENERIC_ISA_DMA
862 # Endianess selection. Sufficiently obscure so many users don't know what to
863 # answer,so we try hard to limit the available choices. Also the use of a
864 # choice statement should be more obvious to the user.
867 prompt "Endianess selection"
869 Some MIPS machines can be configured for either little or big endian
870 byte order. These modes require different kernels and a different
871 Linux distribution. In general there is one preferred byteorder for a
872 particular system but some systems are just as commonly used in the
873 one or the other endianness.
875 config CPU_BIG_ENDIAN
877 depends on SYS_SUPPORTS_BIG_ENDIAN
879 config CPU_LITTLE_ENDIAN
881 depends on SYS_SUPPORTS_LITTLE_ENDIAN
886 config SYS_SUPPORTS_APM_EMULATION
889 config SYS_SUPPORTS_BIG_ENDIAN
892 config SYS_SUPPORTS_LITTLE_ENDIAN
919 config MIPS_BOARDS_GEN
922 config PCI_GT64XXX_PCI0
925 config NO_EXCEPT_FILL
930 select HAS_TXX9_SERIAL
942 select DMA_NONCOHERENT
944 select SYS_HAS_CPU_MIPS32_R1
945 select SYS_HAS_EARLY_PRINTK
946 select SYS_SUPPORTS_32BIT_KERNEL
947 select GENERIC_HARDIRQS_NO__DO_IRQ
948 select SYS_SUPPORTS_KGDB
962 config SGI_HAS_DS1286
965 config SGI_HAS_INDYDOG
980 config DEFAULT_SGI_PARTITION
992 config MIPS_L1_CACHE_SHIFT
994 default "4" if MACH_DECSTATION
995 default "7" if SGI_IP27 || SGI_IP28 || SNI_RM
996 default "4" if PMC_MSP4200_EVAL
999 config HAVE_STD_PC_SERIAL_PORT
1003 bool "ARC console support"
1004 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1008 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1013 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1022 menu "CPU selection"
1028 config CPU_LOONGSON2
1030 depends on SYS_HAS_CPU_LOONGSON2
1031 select CPU_SUPPORTS_32BIT_KERNEL
1032 select CPU_SUPPORTS_64BIT_KERNEL
1033 select CPU_SUPPORTS_HIGHMEM
1035 The Loongson 2E processor implements the MIPS III instruction set
1036 with many extensions.
1038 config CPU_MIPS32_R1
1039 bool "MIPS32 Release 1"
1040 depends on SYS_HAS_CPU_MIPS32_R1
1042 select CPU_HAS_PREFETCH
1043 select CPU_SUPPORTS_32BIT_KERNEL
1044 select CPU_SUPPORTS_HIGHMEM
1046 Choose this option to build a kernel for release 1 or later of the
1047 MIPS32 architecture. Most modern embedded systems with a 32-bit
1048 MIPS processor are based on a MIPS32 processor. If you know the
1049 specific type of processor in your system, choose those that one
1050 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1051 Release 2 of the MIPS32 architecture is available since several
1052 years so chances are you even have a MIPS32 Release 2 processor
1053 in which case you should choose CPU_MIPS32_R2 instead for better
1056 config CPU_MIPS32_R2
1057 bool "MIPS32 Release 2"
1058 depends on SYS_HAS_CPU_MIPS32_R2
1060 select CPU_HAS_PREFETCH
1061 select CPU_SUPPORTS_32BIT_KERNEL
1062 select CPU_SUPPORTS_HIGHMEM
1064 Choose this option to build a kernel for release 2 or later of the
1065 MIPS32 architecture. Most modern embedded systems with a 32-bit
1066 MIPS processor are based on a MIPS32 processor. If you know the
1067 specific type of processor in your system, choose those that one
1068 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1070 config CPU_MIPS64_R1
1071 bool "MIPS64 Release 1"
1072 depends on SYS_HAS_CPU_MIPS64_R1
1074 select CPU_HAS_PREFETCH
1075 select CPU_SUPPORTS_32BIT_KERNEL
1076 select CPU_SUPPORTS_64BIT_KERNEL
1077 select CPU_SUPPORTS_HIGHMEM
1079 Choose this option to build a kernel for release 1 or later of the
1080 MIPS64 architecture. Many modern embedded systems with a 64-bit
1081 MIPS processor are based on a MIPS64 processor. If you know the
1082 specific type of processor in your system, choose those that one
1083 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1084 Release 2 of the MIPS64 architecture is available since several
1085 years so chances are you even have a MIPS64 Release 2 processor
1086 in which case you should choose CPU_MIPS64_R2 instead for better
1089 config CPU_MIPS64_R2
1090 bool "MIPS64 Release 2"
1091 depends on SYS_HAS_CPU_MIPS64_R2
1093 select CPU_HAS_PREFETCH
1094 select CPU_SUPPORTS_32BIT_KERNEL
1095 select CPU_SUPPORTS_64BIT_KERNEL
1096 select CPU_SUPPORTS_HIGHMEM
1098 Choose this option to build a kernel for release 2 or later of the
1099 MIPS64 architecture. Many modern embedded systems with a 64-bit
1100 MIPS processor are based on a MIPS64 processor. If you know the
1101 specific type of processor in your system, choose those that one
1102 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1106 depends on SYS_HAS_CPU_R3000
1108 select CPU_SUPPORTS_32BIT_KERNEL
1109 select CPU_SUPPORTS_HIGHMEM
1111 Please make sure to pick the right CPU type. Linux/MIPS is not
1112 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1113 *not* work on R4000 machines and vice versa. However, since most
1114 of the supported machines have an R4000 (or similar) CPU, R4x00
1115 might be a safe bet. If the resulting kernel does not work,
1116 try to recompile with R3000.
1120 depends on SYS_HAS_CPU_TX39XX
1121 select CPU_SUPPORTS_32BIT_KERNEL
1125 depends on SYS_HAS_CPU_VR41XX
1126 select CPU_SUPPORTS_32BIT_KERNEL
1127 select CPU_SUPPORTS_64BIT_KERNEL
1129 The options selects support for the NEC VR4100 series of processors.
1130 Only choose this option if you have one of these processors as a
1131 kernel built with this option will not run on any other type of
1132 processor or vice versa.
1136 depends on SYS_HAS_CPU_R4300
1138 select CPU_SUPPORTS_32BIT_KERNEL
1139 select CPU_SUPPORTS_64BIT_KERNEL
1141 MIPS Technologies R4300-series processors.
1145 depends on SYS_HAS_CPU_R4X00
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1150 MIPS Technologies R4000-series processors other than 4300, including
1151 the R4000, R4400, R4600, and 4700.
1155 depends on SYS_HAS_CPU_TX49XX
1157 select CPU_HAS_PREFETCH
1158 select CPU_SUPPORTS_32BIT_KERNEL
1159 select CPU_SUPPORTS_64BIT_KERNEL
1163 depends on SYS_HAS_CPU_R5000
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_64BIT_KERNEL
1168 MIPS Technologies R5000-series processors other than the Nevada.
1172 depends on SYS_HAS_CPU_R5432
1174 select CPU_SUPPORTS_32BIT_KERNEL
1175 select CPU_SUPPORTS_64BIT_KERNEL
1179 depends on EXPERIMENTAL
1181 depends on SYS_HAS_CPU_R6000
1182 select CPU_SUPPORTS_32BIT_KERNEL
1184 MIPS Technologies R6000 and R6000A series processors. Note these
1185 processors are extremely rare and the support for them is incomplete.
1189 depends on SYS_HAS_CPU_NEVADA
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_64BIT_KERNEL
1194 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1198 depends on EXPERIMENTAL
1199 depends on SYS_HAS_CPU_R8000
1201 select CPU_HAS_PREFETCH
1202 select CPU_SUPPORTS_64BIT_KERNEL
1204 MIPS Technologies R8000 processors. Note these processors are
1205 uncommon and the support for them is incomplete.
1209 depends on SYS_HAS_CPU_R10000
1211 select CPU_HAS_PREFETCH
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1214 select CPU_SUPPORTS_HIGHMEM
1216 MIPS Technologies R10000-series processors.
1220 depends on SYS_HAS_CPU_RM7000
1222 select CPU_HAS_PREFETCH
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_64BIT_KERNEL
1225 select CPU_SUPPORTS_HIGHMEM
1229 depends on SYS_HAS_CPU_RM9000
1231 select CPU_HAS_PREFETCH
1232 select CPU_SUPPORTS_32BIT_KERNEL
1233 select CPU_SUPPORTS_64BIT_KERNEL
1234 select CPU_SUPPORTS_HIGHMEM
1235 select WEAK_ORDERING
1239 depends on SYS_HAS_CPU_SB1
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1243 select CPU_SUPPORTS_HIGHMEM
1244 select WEAK_ORDERING
1248 config SYS_HAS_CPU_LOONGSON2
1251 config SYS_HAS_CPU_MIPS32_R1
1254 config SYS_HAS_CPU_MIPS32_R2
1257 config SYS_HAS_CPU_MIPS64_R1
1260 config SYS_HAS_CPU_MIPS64_R2
1263 config SYS_HAS_CPU_R3000
1266 config SYS_HAS_CPU_TX39XX
1269 config SYS_HAS_CPU_VR41XX
1272 config SYS_HAS_CPU_R4300
1275 config SYS_HAS_CPU_R4X00
1278 config SYS_HAS_CPU_TX49XX
1281 config SYS_HAS_CPU_R5000
1284 config SYS_HAS_CPU_R5432
1287 config SYS_HAS_CPU_R6000
1290 config SYS_HAS_CPU_NEVADA
1293 config SYS_HAS_CPU_R8000
1296 config SYS_HAS_CPU_R10000
1299 config SYS_HAS_CPU_RM7000
1302 config SYS_HAS_CPU_RM9000
1305 config SYS_HAS_CPU_SB1
1309 # CPU may reorder R->R, R->W, W->R, W->W
1310 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1312 config WEAK_ORDERING
1316 # CPU may reorder reads and writes beyond LL/SC
1317 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1319 config WEAK_REORDERING_BEYOND_LLSC
1324 # These two indicate any level of the MIPS32 and MIPS64 architecture
1328 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1332 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1335 # These two indicate the revision of the architecture, either Release 1 or Release 2
1339 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1343 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1345 config SYS_SUPPORTS_32BIT_KERNEL
1347 config SYS_SUPPORTS_64BIT_KERNEL
1349 config CPU_SUPPORTS_32BIT_KERNEL
1351 config CPU_SUPPORTS_64BIT_KERNEL
1358 prompt "Kernel code model"
1360 You should only select this option if you have a workload that
1361 actually benefits from 64-bit processing or if your machine has
1362 large memory. You will only be presented a single option in this
1363 menu if your system does not support both 32-bit and 64-bit kernels.
1366 bool "32-bit kernel"
1367 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1370 Select this option if you want to build a 32-bit kernel.
1372 bool "64-bit kernel"
1373 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1375 Select this option if you want to build a 64-bit kernel.
1380 prompt "Kernel page size"
1381 default PAGE_SIZE_4KB
1383 config PAGE_SIZE_4KB
1386 This option select the standard 4kB Linux page size. On some
1387 R3000-family processors this is the only available page size. Using
1388 4kB page size will minimize memory consumption and is therefore
1389 recommended for low memory systems.
1391 config PAGE_SIZE_8KB
1393 depends on EXPERIMENTAL && CPU_R8000
1395 Using 8kB page size will result in higher performance kernel at
1396 the price of higher memory consumption. This option is available
1397 only on the R8000 processor. Not that at the time of this writing
1398 this option is still high experimental; there are also issues with
1399 compatibility of user applications.
1401 config PAGE_SIZE_16KB
1403 depends on !CPU_R3000 && !CPU_TX39XX
1405 Using 16kB page size will result in higher performance kernel at
1406 the price of higher memory consumption. This option is available on
1407 all non-R3000 family processors. Note that you will need a suitable
1408 Linux distribution to support this.
1410 config PAGE_SIZE_64KB
1412 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1414 Using 64kB page size will result in higher performance kernel at
1415 the price of higher memory consumption. This option is available on
1416 all non-R3000 family processor. Not that at the time of this
1417 writing this option is still high experimental.
1424 config IP22_CPU_SCACHE
1429 # Support for a MIPS32 / MIPS64 style S-caches
1431 config MIPS_CPU_SCACHE
1435 config R5000_CPU_SCACHE
1439 config RM7000_CPU_SCACHE
1443 config SIBYTE_DMA_PAGEOPS
1444 bool "Use DMA to clear/copy pages"
1447 Instead of using the CPU to zero and copy pages, use a Data Mover
1448 channel. These DMA channels are otherwise unused by the standard
1449 SiByte Linux port. Seems to give a small performance benefit.
1451 config CPU_HAS_PREFETCH
1455 prompt "MIPS MT options"
1457 config MIPS_MT_DISABLED
1458 bool "Disable multithreading support."
1460 Use this option if your workload can't take advantage of
1461 MIPS hardware multithreading support. On systems that don't have
1462 the option of an MT-enabled processor this option will be the only
1463 option in this menu.
1466 bool "Use 1 TC on each available VPE for SMP"
1467 depends on SYS_SUPPORTS_MULTITHREADING
1468 select CPU_MIPSR2_IRQ_VI
1469 select CPU_MIPSR2_IRQ_EI
1471 select NR_CPUS_DEFAULT_2
1473 select SYS_SUPPORTS_SCHED_SMT if SMP
1474 select SYS_SUPPORTS_SMP
1477 This is a kernel model which is also known a VSMP or lately
1478 has been marketesed into SMVP.
1481 bool "SMTC: Use all TCs on all VPEs for SMP"
1482 depends on CPU_MIPS32_R2
1483 #depends on CPU_MIPS64_R2 # once there is hardware ...
1484 depends on SYS_SUPPORTS_MULTITHREADING
1485 select GENERIC_CLOCKEVENTS_BROADCAST
1486 select CPU_MIPSR2_IRQ_VI
1487 select CPU_MIPSR2_IRQ_EI
1489 select NR_CPUS_DEFAULT_8
1491 select SYS_SUPPORTS_SMP
1494 This is a kernel model which is known a SMTC or lately has been
1495 marketesed into SMVP.
1503 bool "SMT (multithreading) scheduler support"
1504 depends on SYS_SUPPORTS_SCHED_SMT
1507 SMT scheduler support improves the CPU scheduler's decision making
1508 when dealing with MIPS MT enabled cores at a cost of slightly
1509 increased overhead in some places. If unsure say N here.
1511 config SYS_SUPPORTS_SCHED_SMT
1515 config SYS_SUPPORTS_MULTITHREADING
1518 config MIPS_MT_FPAFF
1519 bool "Dynamic FPU affinity for FP-intensive threads"
1521 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1523 config MIPS_VPE_LOADER
1524 bool "VPE loader support."
1525 depends on SYS_SUPPORTS_MULTITHREADING
1526 select CPU_MIPSR2_IRQ_VI
1527 select CPU_MIPSR2_IRQ_EI
1530 Includes a loader for loading an elf relocatable object
1531 onto another VPE and running it.
1533 config MIPS_MT_SMTC_INSTANT_REPLAY
1534 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1535 depends on MIPS_MT_SMTC && !PREEMPT
1538 SMTC pseudo-interrupts between TCs are deferred and queued
1539 if the target TC is interrupt-inhibited (IXMT). In the first
1540 SMTC prototypes, these queued IPIs were serviced on return
1541 to user mode, or on entry into the kernel idle loop. The
1542 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1543 processing, which adds runtime overhead (hence the option to turn
1544 it off), but ensures that IPIs are handled promptly even under
1545 heavy I/O interrupt load.
1547 config MIPS_MT_SMTC_IM_BACKSTOP
1548 bool "Use per-TC register bits as backstop for inhibited IM bits"
1549 depends on MIPS_MT_SMTC
1552 To support multiple TC microthreads acting as "CPUs" within
1553 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1554 during interrupt handling. To support legacy drivers and interrupt
1555 controller management code, SMTC has a "backstop" to track and
1556 if necessary restore the interrupt mask. This has some performance
1557 impact on interrupt service overhead. Disable it only if you know
1560 config MIPS_MT_SMTC_IRQAFF
1561 bool "Support IRQ affinity API"
1562 depends on MIPS_MT_SMTC
1565 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1566 for SMTC Linux kernel. Requires platform support, of which
1567 an example can be found in the MIPS kernel i8259 and Malta
1568 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1569 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1570 interrupt dispatch, and should be used only if you know what
1573 config MIPS_VPE_LOADER_TOM
1574 bool "Load VPE program into memory hidden from linux"
1575 depends on MIPS_VPE_LOADER
1578 The loader can use memory that is present but has been hidden from
1579 Linux using the kernel command line option "mem=xxMB". It's up to
1580 you to ensure the amount you put in the option and the space your
1581 program requires is less or equal to the amount physically present.
1583 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1584 config MIPS_VPE_APSP_API
1585 bool "Enable support for AP/SP API (RTLX)"
1586 depends on MIPS_VPE_LOADER
1589 config MIPS_APSP_KSPD
1591 depends on MIPS_VPE_APSP_API
1594 KSPD is a kernel daemon that accepts syscall requests from the SP
1595 side, actions them and returns the results. It also handles the
1596 "exit" syscall notifying other kernel modules the SP program is
1597 exiting. You probably want to say yes here.
1599 config SB1_PASS_1_WORKAROUNDS
1601 depends on CPU_SB1_PASS_1
1604 config SB1_PASS_2_WORKAROUNDS
1606 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1609 config SB1_PASS_2_1_WORKAROUNDS
1611 depends on CPU_SB1 && CPU_SB1_PASS_2
1614 config 64BIT_PHYS_ADDR
1620 config CPU_HAS_SMARTMIPS
1621 depends on SYS_SUPPORTS_SMARTMIPS
1622 bool "Support for the SmartMIPS ASE"
1624 SmartMIPS is a extension of the MIPS32 architecture aimed at
1625 increased security at both hardware and software level for
1626 smartcards. Enabling this option will allow proper use of the
1627 SmartMIPS instructions by Linux applications. However a kernel with
1628 this option will not work on a MIPS core without SmartMIPS core. If
1629 you don't know you probably don't have SmartMIPS and should say N
1636 # Vectored interrupt mode is an R2 feature
1638 config CPU_MIPSR2_IRQ_VI
1642 # Extended interrupt mode is an R2 feature
1644 config CPU_MIPSR2_IRQ_EI
1649 depends on !CPU_R3000
1652 config GENERIC_CLOCKEVENTS_BROADCAST
1658 config CPU_DADDI_WORKAROUNDS
1661 config CPU_R4000_WORKAROUNDS
1663 select CPU_R4400_WORKAROUNDS
1665 config CPU_R4400_WORKAROUNDS
1669 # Use the generic interrupt handling code in kernel/irq/:
1671 config GENERIC_HARDIRQS
1675 config GENERIC_IRQ_PROBE
1683 # - Highmem only makes sense for the 32-bit kernel.
1684 # - The current highmem code will only work properly on physically indexed
1685 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1686 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1687 # moment we protect the user and offer the highmem option only on machines
1688 # where it's known to be safe. This will not offer highmem on a few systems
1689 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1690 # indexed CPUs but we're playing safe.
1691 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1692 # know they might have memory configurations that could make use of highmem
1696 bool "High Memory Support"
1697 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1699 config CPU_SUPPORTS_HIGHMEM
1702 config SYS_SUPPORTS_HIGHMEM
1705 config SYS_SUPPORTS_SMARTMIPS
1708 config ARCH_FLATMEM_ENABLE
1712 config ARCH_DISCONTIGMEM_ENABLE
1714 default y if SGI_IP27
1716 Say Y to support efficient handling of discontiguous physical memory,
1717 for architectures which are either NUMA (Non-Uniform Memory Access)
1718 or have huge holes in the physical address space for other reasons.
1719 See <file:Documentation/vm/numa> for more.
1721 config ARCH_POPULATES_NODE_MAP
1724 config ARCH_SPARSEMEM_ENABLE
1726 select SPARSEMEM_STATIC
1730 depends on SYS_SUPPORTS_NUMA
1732 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1733 Access). This option improves performance on systems with more
1734 than two nodes; on two node systems it is generally better to
1735 leave it disabled; on single node systems disable this option
1738 config SYS_SUPPORTS_NUMA
1744 depends on NEED_MULTIPLE_NODES
1749 bool "Multi-Processing support"
1750 depends on SYS_SUPPORTS_SMP
1753 This enables support for systems with more than one CPU. If you have
1754 a system with only one CPU, like most personal computers, say N. If
1755 you have a system with more than one CPU, say Y.
1757 If you say N here, the kernel will run on single and multiprocessor
1758 machines, but will use only one CPU of a multiprocessor machine. If
1759 you say Y here, the kernel will run on many, but not all,
1760 singleprocessor machines. On a singleprocessor machine, the kernel
1761 will run faster if you say N here.
1763 People using multiprocessor machines who say Y here should also say
1764 Y to "Enhanced Real Time Clock Support", below.
1766 See also the SMP-HOWTO available at
1767 <http://www.tldp.org/docs.html#howto>.
1769 If you don't know what to do here, say N.
1774 config SYS_SUPPORTS_SMP
1777 config NR_CPUS_DEFAULT_1
1780 config NR_CPUS_DEFAULT_2
1783 config NR_CPUS_DEFAULT_4
1786 config NR_CPUS_DEFAULT_8
1789 config NR_CPUS_DEFAULT_16
1792 config NR_CPUS_DEFAULT_32
1795 config NR_CPUS_DEFAULT_64
1799 int "Maximum number of CPUs (2-64)"
1800 range 1 64 if NR_CPUS_DEFAULT_1
1802 default "1" if NR_CPUS_DEFAULT_1
1803 default "2" if NR_CPUS_DEFAULT_2
1804 default "4" if NR_CPUS_DEFAULT_4
1805 default "8" if NR_CPUS_DEFAULT_8
1806 default "16" if NR_CPUS_DEFAULT_16
1807 default "32" if NR_CPUS_DEFAULT_32
1808 default "64" if NR_CPUS_DEFAULT_64
1810 This allows you to specify the maximum number of CPUs which this
1811 kernel will support. The maximum supported value is 32 for 32-bit
1812 kernel and 64 for 64-bit kernels; the minimum value which makes
1813 sense is 1 for Qemu (useful only for kernel debugging purposes)
1814 and 2 for all others.
1816 This is purely to save memory - each supported CPU adds
1817 approximately eight kilobytes to the kernel image. For best
1818 performance should round up your number of processors to the next
1822 bool "MIPS CMP framework support"
1825 select SYS_SUPPORTS_SCHED_SMT
1826 select WEAK_ORDERING
1829 This is a placeholder option for the GCMP work. It will need to
1830 be handled differently...
1832 source "kernel/time/Kconfig"
1835 # Timer Interrupt Frequency Configuration
1839 prompt "Timer frequency"
1842 Allows the configuration of the timer frequency.
1845 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1848 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1851 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1854 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1857 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1860 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1863 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1867 config SYS_SUPPORTS_48HZ
1870 config SYS_SUPPORTS_100HZ
1873 config SYS_SUPPORTS_128HZ
1876 config SYS_SUPPORTS_250HZ
1879 config SYS_SUPPORTS_256HZ
1882 config SYS_SUPPORTS_1000HZ
1885 config SYS_SUPPORTS_1024HZ
1888 config SYS_SUPPORTS_ARBIT_HZ
1890 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1891 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1892 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1893 !SYS_SUPPORTS_1024HZ
1898 default 100 if HZ_100
1899 default 128 if HZ_128
1900 default 250 if HZ_250
1901 default 256 if HZ_256
1902 default 1000 if HZ_1000
1903 default 1024 if HZ_1024
1905 source "kernel/Kconfig.preempt"
1907 config MIPS_INSANE_LARGE
1908 bool "Support for large 64-bit configurations"
1909 depends on CPU_R10000 && 64BIT
1911 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1912 previous 64-bit processors which only supported 40 bit / 1TB. If you
1913 need processes of more than 1TB virtual address space, say Y here.
1914 This will result in additional memory usage, so it is not
1915 recommended for normal users.
1918 bool "Kexec system call (EXPERIMENTAL)"
1919 depends on EXPERIMENTAL
1921 kexec is a system call that implements the ability to shutdown your
1922 current kernel, and to start another kernel. It is like a reboot
1923 but it is independent of the system firmware. And like a reboot
1924 you can start any kernel with it, not just Linux.
1926 The name comes from the similarity to the exec system call.
1928 It is an ongoing process to be certain the hardware in a machine
1929 is properly shutdown, so do not be surprised if this code does not
1930 initially work for you. It may help to enable device hotplugging
1931 support. As of this writing the exact hardware interface is
1932 strongly in flux, so no good recommendation can be made.
1935 bool "Enable seccomp to safely compute untrusted bytecode"
1939 This kernel feature is useful for number crunching applications
1940 that may need to compute untrusted bytecode during their
1941 execution. By using pipes or other transports made available to
1942 the process as file descriptors supporting the read/write
1943 syscalls, it's possible to isolate those applications in
1944 their own address space using seccomp. Once seccomp is
1945 enabled via /proc/<pid>/seccomp, it cannot be disabled
1946 and the task is only allowed to execute a few safe syscalls
1947 defined by each seccomp mode.
1949 If unsure, say Y. Only embedded should say N here.
1953 config RWSEM_GENERIC_SPINLOCK
1957 config LOCKDEP_SUPPORT
1961 config STACKTRACE_SUPPORT
1965 source "init/Kconfig"
1967 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1975 bool "Support for PCI controller"
1976 depends on HW_HAS_PCI
1979 Find out whether you have a PCI motherboard. PCI is the name of a
1980 bus system, i.e. the way the CPU talks to the other stuff inside
1981 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1987 source "drivers/pci/Kconfig"
1990 # ISA support is now enabled via select. Too many systems still have the one
1991 # or other ISA chip on the board that users don't know about so don't expect
1992 # users to choose the right thing ...
1999 depends on HW_HAS_EISA
2001 select GENERIC_ISA_DMA
2003 The Extended Industry Standard Architecture (EISA) bus was
2004 developed as an open alternative to the IBM MicroChannel bus.
2006 The EISA bus provided some of the features of the IBM MicroChannel
2007 bus while maintaining backward compatibility with cards made for
2008 the older ISA bus. The EISA bus saw limited use between 1988 and
2009 1995 when it was made obsolete by the PCI bus.
2011 Say Y here if you are building a kernel for an EISA-based machine.
2015 source "drivers/eisa/Kconfig"
2018 bool "TURBOchannel support"
2019 depends on MACH_DECSTATION
2021 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2022 processors. Documentation on writing device drivers for TurboChannel
2024 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2027 # bool "Access.Bus support"
2040 source "drivers/pcmcia/Kconfig"
2042 source "drivers/pci/hotplug/Kconfig"
2046 menu "Executable file formats"
2048 source "fs/Kconfig.binfmt"
2054 bool "Include IRIX binary compatibility"
2055 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2057 config MIPS32_COMPAT
2058 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2061 Select this option if you want Linux/MIPS 32-bit binary
2062 compatibility. Since all software available for Linux/MIPS is
2063 currently 32-bit you should say Y here.
2067 depends on MIPS32_COMPAT
2070 config SYSVIPC_COMPAT
2072 depends on COMPAT && SYSVIPC
2076 bool "Kernel support for o32 binaries"
2077 depends on MIPS32_COMPAT
2079 Select this option if you want to run o32 binaries. These are pure
2080 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2081 existing binaries are in this format.
2086 bool "Kernel support for n32 binaries"
2087 depends on MIPS32_COMPAT
2089 Select this option if you want to run n32 binaries. These are
2090 64-bit binaries using 32-bit quantities for addressing and certain
2091 data that would normally be 64-bit. They are used in special
2098 default y if MIPS32_O32 || MIPS32_N32
2102 menu "Power management options"
2104 config ARCH_SUSPEND_POSSIBLE
2108 source "kernel/power/Kconfig"
2112 source "net/Kconfig"
2114 source "drivers/Kconfig"
2118 source "arch/mips/Kconfig.debug"
2120 source "security/Kconfig"
2122 source "crypto/Kconfig"
2124 source "lib/Kconfig"