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
806 config DMA_NONCOHERENT
808 select DMA_NEED_PCI_MAP_STATE
810 config DMA_NEED_PCI_MAP_STATE
814 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
815 depends on SYS_HAS_EARLY_PRINTK
818 This option enables special console drivers which allow the kernel
819 to print messages very early in the bootup process.
821 This is useful for kernel debugging when your machine crashes very
822 early before the console code is initialized. For normal operation,
823 it is not recommended because it looks ugly on some machines and
824 doesn't cooperate with an X server. You should normally say N here,
825 unless you want to debug such a crash.
827 config SYS_HAS_EARLY_PRINTK
846 config MIPS_DISABLE_OBSOLETE_IDE
855 config GENERIC_ISA_DMA
857 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
859 config GENERIC_ISA_DMA_SUPPORT_BROKEN
861 select GENERIC_ISA_DMA
867 # Endianess selection. Sufficiently obscure so many users don't know what to
868 # answer,so we try hard to limit the available choices. Also the use of a
869 # choice statement should be more obvious to the user.
872 prompt "Endianess selection"
874 Some MIPS machines can be configured for either little or big endian
875 byte order. These modes require different kernels and a different
876 Linux distribution. In general there is one preferred byteorder for a
877 particular system but some systems are just as commonly used in the
878 one or the other endianness.
880 config CPU_BIG_ENDIAN
882 depends on SYS_SUPPORTS_BIG_ENDIAN
884 config CPU_LITTLE_ENDIAN
886 depends on SYS_SUPPORTS_LITTLE_ENDIAN
891 config SYS_SUPPORTS_APM_EMULATION
894 config SYS_SUPPORTS_BIG_ENDIAN
897 config SYS_SUPPORTS_LITTLE_ENDIAN
924 config MIPS_BOARDS_GEN
927 config PCI_GT64XXX_PCI0
930 config NO_EXCEPT_FILL
935 select HAS_TXX9_SERIAL
947 select DMA_NONCOHERENT
949 select SYS_HAS_CPU_MIPS32_R1
950 select SYS_HAS_EARLY_PRINTK
951 select SYS_SUPPORTS_32BIT_KERNEL
952 select GENERIC_HARDIRQS_NO__DO_IRQ
953 select SYS_SUPPORTS_KGDB
967 config SGI_HAS_DS1286
970 config SGI_HAS_INDYDOG
985 config DEFAULT_SGI_PARTITION
997 config MIPS_L1_CACHE_SHIFT
999 default "4" if MACH_DECSTATION
1000 default "7" if SGI_IP27 || SGI_IP28 || SNI_RM
1001 default "4" if PMC_MSP4200_EVAL
1004 config HAVE_STD_PC_SERIAL_PORT
1008 bool "ARC console support"
1009 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1013 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1018 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1027 menu "CPU selection"
1033 config CPU_LOONGSON2
1035 depends on SYS_HAS_CPU_LOONGSON2
1036 select CPU_SUPPORTS_32BIT_KERNEL
1037 select CPU_SUPPORTS_64BIT_KERNEL
1038 select CPU_SUPPORTS_HIGHMEM
1040 The Loongson 2E processor implements the MIPS III instruction set
1041 with many extensions.
1043 config CPU_MIPS32_R1
1044 bool "MIPS32 Release 1"
1045 depends on SYS_HAS_CPU_MIPS32_R1
1047 select CPU_HAS_PREFETCH
1048 select CPU_SUPPORTS_32BIT_KERNEL
1049 select CPU_SUPPORTS_HIGHMEM
1051 Choose this option to build a kernel for release 1 or later of the
1052 MIPS32 architecture. Most modern embedded systems with a 32-bit
1053 MIPS processor are based on a MIPS32 processor. If you know the
1054 specific type of processor in your system, choose those that one
1055 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1056 Release 2 of the MIPS32 architecture is available since several
1057 years so chances are you even have a MIPS32 Release 2 processor
1058 in which case you should choose CPU_MIPS32_R2 instead for better
1061 config CPU_MIPS32_R2
1062 bool "MIPS32 Release 2"
1063 depends on SYS_HAS_CPU_MIPS32_R2
1065 select CPU_HAS_PREFETCH
1066 select CPU_SUPPORTS_32BIT_KERNEL
1067 select CPU_SUPPORTS_HIGHMEM
1069 Choose this option to build a kernel for release 2 or later of the
1070 MIPS32 architecture. Most modern embedded systems with a 32-bit
1071 MIPS processor are based on a MIPS32 processor. If you know the
1072 specific type of processor in your system, choose those that one
1073 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1075 config CPU_MIPS64_R1
1076 bool "MIPS64 Release 1"
1077 depends on SYS_HAS_CPU_MIPS64_R1
1079 select CPU_HAS_PREFETCH
1080 select CPU_SUPPORTS_32BIT_KERNEL
1081 select CPU_SUPPORTS_64BIT_KERNEL
1082 select CPU_SUPPORTS_HIGHMEM
1084 Choose this option to build a kernel for release 1 or later of the
1085 MIPS64 architecture. Many modern embedded systems with a 64-bit
1086 MIPS processor are based on a MIPS64 processor. If you know the
1087 specific type of processor in your system, choose those that one
1088 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1089 Release 2 of the MIPS64 architecture is available since several
1090 years so chances are you even have a MIPS64 Release 2 processor
1091 in which case you should choose CPU_MIPS64_R2 instead for better
1094 config CPU_MIPS64_R2
1095 bool "MIPS64 Release 2"
1096 depends on SYS_HAS_CPU_MIPS64_R2
1098 select CPU_HAS_PREFETCH
1099 select CPU_SUPPORTS_32BIT_KERNEL
1100 select CPU_SUPPORTS_64BIT_KERNEL
1101 select CPU_SUPPORTS_HIGHMEM
1103 Choose this option to build a kernel for release 2 or later of the
1104 MIPS64 architecture. Many modern embedded systems with a 64-bit
1105 MIPS processor are based on a MIPS64 processor. If you know the
1106 specific type of processor in your system, choose those that one
1107 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1111 depends on SYS_HAS_CPU_R3000
1113 select CPU_SUPPORTS_32BIT_KERNEL
1114 select CPU_SUPPORTS_HIGHMEM
1116 Please make sure to pick the right CPU type. Linux/MIPS is not
1117 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1118 *not* work on R4000 machines and vice versa. However, since most
1119 of the supported machines have an R4000 (or similar) CPU, R4x00
1120 might be a safe bet. If the resulting kernel does not work,
1121 try to recompile with R3000.
1125 depends on SYS_HAS_CPU_TX39XX
1126 select CPU_SUPPORTS_32BIT_KERNEL
1130 depends on SYS_HAS_CPU_VR41XX
1131 select CPU_SUPPORTS_32BIT_KERNEL
1132 select CPU_SUPPORTS_64BIT_KERNEL
1134 The options selects support for the NEC VR4100 series of processors.
1135 Only choose this option if you have one of these processors as a
1136 kernel built with this option will not run on any other type of
1137 processor or vice versa.
1141 depends on SYS_HAS_CPU_R4300
1143 select CPU_SUPPORTS_32BIT_KERNEL
1144 select CPU_SUPPORTS_64BIT_KERNEL
1146 MIPS Technologies R4300-series processors.
1150 depends on SYS_HAS_CPU_R4X00
1152 select CPU_SUPPORTS_32BIT_KERNEL
1153 select CPU_SUPPORTS_64BIT_KERNEL
1155 MIPS Technologies R4000-series processors other than 4300, including
1156 the R4000, R4400, R4600, and 4700.
1160 depends on SYS_HAS_CPU_TX49XX
1162 select CPU_HAS_PREFETCH
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1168 depends on SYS_HAS_CPU_R5000
1170 select CPU_SUPPORTS_32BIT_KERNEL
1171 select CPU_SUPPORTS_64BIT_KERNEL
1173 MIPS Technologies R5000-series processors other than the Nevada.
1177 depends on SYS_HAS_CPU_R5432
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_64BIT_KERNEL
1184 depends on EXPERIMENTAL
1186 depends on SYS_HAS_CPU_R6000
1187 select CPU_SUPPORTS_32BIT_KERNEL
1189 MIPS Technologies R6000 and R6000A series processors. Note these
1190 processors are extremely rare and the support for them is incomplete.
1194 depends on SYS_HAS_CPU_NEVADA
1196 select CPU_SUPPORTS_32BIT_KERNEL
1197 select CPU_SUPPORTS_64BIT_KERNEL
1199 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1203 depends on EXPERIMENTAL
1204 depends on SYS_HAS_CPU_R8000
1206 select CPU_HAS_PREFETCH
1207 select CPU_SUPPORTS_64BIT_KERNEL
1209 MIPS Technologies R8000 processors. Note these processors are
1210 uncommon and the support for them is incomplete.
1214 depends on SYS_HAS_CPU_R10000
1216 select CPU_HAS_PREFETCH
1217 select CPU_SUPPORTS_32BIT_KERNEL
1218 select CPU_SUPPORTS_64BIT_KERNEL
1219 select CPU_SUPPORTS_HIGHMEM
1221 MIPS Technologies R10000-series processors.
1225 depends on SYS_HAS_CPU_RM7000
1227 select CPU_HAS_PREFETCH
1228 select CPU_SUPPORTS_32BIT_KERNEL
1229 select CPU_SUPPORTS_64BIT_KERNEL
1230 select CPU_SUPPORTS_HIGHMEM
1234 depends on SYS_HAS_CPU_RM9000
1236 select CPU_HAS_PREFETCH
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1239 select CPU_SUPPORTS_HIGHMEM
1240 select WEAK_ORDERING
1244 depends on SYS_HAS_CPU_SB1
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_64BIT_KERNEL
1248 select CPU_SUPPORTS_HIGHMEM
1249 select WEAK_ORDERING
1253 config SYS_HAS_CPU_LOONGSON2
1256 config SYS_HAS_CPU_MIPS32_R1
1259 config SYS_HAS_CPU_MIPS32_R2
1262 config SYS_HAS_CPU_MIPS64_R1
1265 config SYS_HAS_CPU_MIPS64_R2
1268 config SYS_HAS_CPU_R3000
1271 config SYS_HAS_CPU_TX39XX
1274 config SYS_HAS_CPU_VR41XX
1277 config SYS_HAS_CPU_R4300
1280 config SYS_HAS_CPU_R4X00
1283 config SYS_HAS_CPU_TX49XX
1286 config SYS_HAS_CPU_R5000
1289 config SYS_HAS_CPU_R5432
1292 config SYS_HAS_CPU_R6000
1295 config SYS_HAS_CPU_NEVADA
1298 config SYS_HAS_CPU_R8000
1301 config SYS_HAS_CPU_R10000
1304 config SYS_HAS_CPU_RM7000
1307 config SYS_HAS_CPU_RM9000
1310 config SYS_HAS_CPU_SB1
1314 # CPU may reorder R->R, R->W, W->R, W->W
1315 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1317 config WEAK_ORDERING
1321 # CPU may reorder reads and writes beyond LL/SC
1322 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1324 config WEAK_REORDERING_BEYOND_LLSC
1329 # These two indicate any level of the MIPS32 and MIPS64 architecture
1333 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1337 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1340 # These two indicate the revision of the architecture, either Release 1 or Release 2
1344 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1348 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1350 config SYS_SUPPORTS_32BIT_KERNEL
1352 config SYS_SUPPORTS_64BIT_KERNEL
1354 config CPU_SUPPORTS_32BIT_KERNEL
1356 config CPU_SUPPORTS_64BIT_KERNEL
1363 prompt "Kernel code model"
1365 You should only select this option if you have a workload that
1366 actually benefits from 64-bit processing or if your machine has
1367 large memory. You will only be presented a single option in this
1368 menu if your system does not support both 32-bit and 64-bit kernels.
1371 bool "32-bit kernel"
1372 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1375 Select this option if you want to build a 32-bit kernel.
1377 bool "64-bit kernel"
1378 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1380 Select this option if you want to build a 64-bit kernel.
1385 prompt "Kernel page size"
1386 default PAGE_SIZE_4KB
1388 config PAGE_SIZE_4KB
1391 This option select the standard 4kB Linux page size. On some
1392 R3000-family processors this is the only available page size. Using
1393 4kB page size will minimize memory consumption and is therefore
1394 recommended for low memory systems.
1396 config PAGE_SIZE_8KB
1398 depends on EXPERIMENTAL && CPU_R8000
1400 Using 8kB page size will result in higher performance kernel at
1401 the price of higher memory consumption. This option is available
1402 only on the R8000 processor. Not that at the time of this writing
1403 this option is still high experimental; there are also issues with
1404 compatibility of user applications.
1406 config PAGE_SIZE_16KB
1408 depends on !CPU_R3000 && !CPU_TX39XX
1410 Using 16kB page size will result in higher performance kernel at
1411 the price of higher memory consumption. This option is available on
1412 all non-R3000 family processors. Note that you will need a suitable
1413 Linux distribution to support this.
1415 config PAGE_SIZE_64KB
1417 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1419 Using 64kB 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 processor. Not that at the time of this
1422 writing this option is still high experimental.
1429 config IP22_CPU_SCACHE
1434 # Support for a MIPS32 / MIPS64 style S-caches
1436 config MIPS_CPU_SCACHE
1440 config R5000_CPU_SCACHE
1444 config RM7000_CPU_SCACHE
1448 config SIBYTE_DMA_PAGEOPS
1449 bool "Use DMA to clear/copy pages"
1452 Instead of using the CPU to zero and copy pages, use a Data Mover
1453 channel. These DMA channels are otherwise unused by the standard
1454 SiByte Linux port. Seems to give a small performance benefit.
1456 config CPU_HAS_PREFETCH
1460 prompt "MIPS MT options"
1462 config MIPS_MT_DISABLED
1463 bool "Disable multithreading support."
1465 Use this option if your workload can't take advantage of
1466 MIPS hardware multithreading support. On systems that don't have
1467 the option of an MT-enabled processor this option will be the only
1468 option in this menu.
1471 bool "Use 1 TC on each available VPE for SMP"
1472 depends on SYS_SUPPORTS_MULTITHREADING
1473 select CPU_MIPSR2_IRQ_VI
1474 select CPU_MIPSR2_IRQ_EI
1476 select NR_CPUS_DEFAULT_2
1478 select SYS_SUPPORTS_SCHED_SMT if SMP
1479 select SYS_SUPPORTS_SMP
1482 This is a kernel model which is also known a VSMP or lately
1483 has been marketesed into SMVP.
1486 bool "SMTC: Use all TCs on all VPEs for SMP"
1487 depends on CPU_MIPS32_R2
1488 #depends on CPU_MIPS64_R2 # once there is hardware ...
1489 depends on SYS_SUPPORTS_MULTITHREADING
1490 select GENERIC_CLOCKEVENTS_BROADCAST
1491 select CPU_MIPSR2_IRQ_VI
1492 select CPU_MIPSR2_IRQ_EI
1494 select NR_CPUS_DEFAULT_8
1496 select SYS_SUPPORTS_SMP
1499 This is a kernel model which is known a SMTC or lately has been
1500 marketesed into SMVP.
1508 bool "SMT (multithreading) scheduler support"
1509 depends on SYS_SUPPORTS_SCHED_SMT
1512 SMT scheduler support improves the CPU scheduler's decision making
1513 when dealing with MIPS MT enabled cores at a cost of slightly
1514 increased overhead in some places. If unsure say N here.
1516 config SYS_SUPPORTS_SCHED_SMT
1520 config SYS_SUPPORTS_MULTITHREADING
1523 config MIPS_MT_FPAFF
1524 bool "Dynamic FPU affinity for FP-intensive threads"
1526 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1528 config MIPS_VPE_LOADER
1529 bool "VPE loader support."
1530 depends on SYS_SUPPORTS_MULTITHREADING
1531 select CPU_MIPSR2_IRQ_VI
1532 select CPU_MIPSR2_IRQ_EI
1535 Includes a loader for loading an elf relocatable object
1536 onto another VPE and running it.
1538 config MIPS_MT_SMTC_INSTANT_REPLAY
1539 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1540 depends on MIPS_MT_SMTC && !PREEMPT
1543 SMTC pseudo-interrupts between TCs are deferred and queued
1544 if the target TC is interrupt-inhibited (IXMT). In the first
1545 SMTC prototypes, these queued IPIs were serviced on return
1546 to user mode, or on entry into the kernel idle loop. The
1547 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1548 processing, which adds runtime overhead (hence the option to turn
1549 it off), but ensures that IPIs are handled promptly even under
1550 heavy I/O interrupt load.
1552 config MIPS_MT_SMTC_IM_BACKSTOP
1553 bool "Use per-TC register bits as backstop for inhibited IM bits"
1554 depends on MIPS_MT_SMTC
1557 To support multiple TC microthreads acting as "CPUs" within
1558 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1559 during interrupt handling. To support legacy drivers and interrupt
1560 controller management code, SMTC has a "backstop" to track and
1561 if necessary restore the interrupt mask. This has some performance
1562 impact on interrupt service overhead. Disable it only if you know
1565 config MIPS_MT_SMTC_IRQAFF
1566 bool "Support IRQ affinity API"
1567 depends on MIPS_MT_SMTC
1570 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1571 for SMTC Linux kernel. Requires platform support, of which
1572 an example can be found in the MIPS kernel i8259 and Malta
1573 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1574 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1575 interrupt dispatch, and should be used only if you know what
1578 config MIPS_VPE_LOADER_TOM
1579 bool "Load VPE program into memory hidden from linux"
1580 depends on MIPS_VPE_LOADER
1583 The loader can use memory that is present but has been hidden from
1584 Linux using the kernel command line option "mem=xxMB". It's up to
1585 you to ensure the amount you put in the option and the space your
1586 program requires is less or equal to the amount physically present.
1588 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1589 config MIPS_VPE_APSP_API
1590 bool "Enable support for AP/SP API (RTLX)"
1591 depends on MIPS_VPE_LOADER
1594 config MIPS_APSP_KSPD
1596 depends on MIPS_VPE_APSP_API
1599 KSPD is a kernel daemon that accepts syscall requests from the SP
1600 side, actions them and returns the results. It also handles the
1601 "exit" syscall notifying other kernel modules the SP program is
1602 exiting. You probably want to say yes here.
1604 config SB1_PASS_1_WORKAROUNDS
1606 depends on CPU_SB1_PASS_1
1609 config SB1_PASS_2_WORKAROUNDS
1611 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1614 config SB1_PASS_2_1_WORKAROUNDS
1616 depends on CPU_SB1 && CPU_SB1_PASS_2
1619 config 64BIT_PHYS_ADDR
1625 config CPU_HAS_SMARTMIPS
1626 depends on SYS_SUPPORTS_SMARTMIPS
1627 bool "Support for the SmartMIPS ASE"
1629 SmartMIPS is a extension of the MIPS32 architecture aimed at
1630 increased security at both hardware and software level for
1631 smartcards. Enabling this option will allow proper use of the
1632 SmartMIPS instructions by Linux applications. However a kernel with
1633 this option will not work on a MIPS core without SmartMIPS core. If
1634 you don't know you probably don't have SmartMIPS and should say N
1641 # Vectored interrupt mode is an R2 feature
1643 config CPU_MIPSR2_IRQ_VI
1647 # Extended interrupt mode is an R2 feature
1649 config CPU_MIPSR2_IRQ_EI
1654 depends on !CPU_R3000
1657 config GENERIC_CLOCKEVENTS_BROADCAST
1663 config CPU_DADDI_WORKAROUNDS
1666 config CPU_R4000_WORKAROUNDS
1668 select CPU_R4400_WORKAROUNDS
1670 config CPU_R4400_WORKAROUNDS
1674 # Use the generic interrupt handling code in kernel/irq/:
1676 config GENERIC_HARDIRQS
1680 config GENERIC_IRQ_PROBE
1688 # - Highmem only makes sense for the 32-bit kernel.
1689 # - The current highmem code will only work properly on physically indexed
1690 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1691 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1692 # moment we protect the user and offer the highmem option only on machines
1693 # where it's known to be safe. This will not offer highmem on a few systems
1694 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1695 # indexed CPUs but we're playing safe.
1696 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1697 # know they might have memory configurations that could make use of highmem
1701 bool "High Memory Support"
1702 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1704 config CPU_SUPPORTS_HIGHMEM
1707 config SYS_SUPPORTS_HIGHMEM
1710 config SYS_SUPPORTS_SMARTMIPS
1713 config ARCH_FLATMEM_ENABLE
1717 config ARCH_DISCONTIGMEM_ENABLE
1719 default y if SGI_IP27
1721 Say Y to support efficient handling of discontiguous physical memory,
1722 for architectures which are either NUMA (Non-Uniform Memory Access)
1723 or have huge holes in the physical address space for other reasons.
1724 See <file:Documentation/vm/numa> for more.
1726 config ARCH_POPULATES_NODE_MAP
1729 config ARCH_SPARSEMEM_ENABLE
1731 select SPARSEMEM_STATIC
1735 depends on SYS_SUPPORTS_NUMA
1737 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1738 Access). This option improves performance on systems with more
1739 than two nodes; on two node systems it is generally better to
1740 leave it disabled; on single node systems disable this option
1743 config SYS_SUPPORTS_NUMA
1749 depends on NEED_MULTIPLE_NODES
1754 bool "Multi-Processing support"
1755 depends on SYS_SUPPORTS_SMP
1758 This enables support for systems with more than one CPU. If you have
1759 a system with only one CPU, like most personal computers, say N. If
1760 you have a system with more than one CPU, say Y.
1762 If you say N here, the kernel will run on single and multiprocessor
1763 machines, but will use only one CPU of a multiprocessor machine. If
1764 you say Y here, the kernel will run on many, but not all,
1765 singleprocessor machines. On a singleprocessor machine, the kernel
1766 will run faster if you say N here.
1768 People using multiprocessor machines who say Y here should also say
1769 Y to "Enhanced Real Time Clock Support", below.
1771 See also the SMP-HOWTO available at
1772 <http://www.tldp.org/docs.html#howto>.
1774 If you don't know what to do here, say N.
1779 config SYS_SUPPORTS_SMP
1782 config NR_CPUS_DEFAULT_1
1785 config NR_CPUS_DEFAULT_2
1788 config NR_CPUS_DEFAULT_4
1791 config NR_CPUS_DEFAULT_8
1794 config NR_CPUS_DEFAULT_16
1797 config NR_CPUS_DEFAULT_32
1800 config NR_CPUS_DEFAULT_64
1804 int "Maximum number of CPUs (2-64)"
1805 range 1 64 if NR_CPUS_DEFAULT_1
1807 default "1" if NR_CPUS_DEFAULT_1
1808 default "2" if NR_CPUS_DEFAULT_2
1809 default "4" if NR_CPUS_DEFAULT_4
1810 default "8" if NR_CPUS_DEFAULT_8
1811 default "16" if NR_CPUS_DEFAULT_16
1812 default "32" if NR_CPUS_DEFAULT_32
1813 default "64" if NR_CPUS_DEFAULT_64
1815 This allows you to specify the maximum number of CPUs which this
1816 kernel will support. The maximum supported value is 32 for 32-bit
1817 kernel and 64 for 64-bit kernels; the minimum value which makes
1818 sense is 1 for Qemu (useful only for kernel debugging purposes)
1819 and 2 for all others.
1821 This is purely to save memory - each supported CPU adds
1822 approximately eight kilobytes to the kernel image. For best
1823 performance should round up your number of processors to the next
1827 bool "MIPS CMP framework support"
1830 select SYS_SUPPORTS_SCHED_SMT
1831 select WEAK_ORDERING
1834 This is a placeholder option for the GCMP work. It will need to
1835 be handled differently...
1837 source "kernel/time/Kconfig"
1840 # Timer Interrupt Frequency Configuration
1844 prompt "Timer frequency"
1847 Allows the configuration of the timer frequency.
1850 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1853 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1856 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1859 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1862 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1865 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1868 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1872 config SYS_SUPPORTS_48HZ
1875 config SYS_SUPPORTS_100HZ
1878 config SYS_SUPPORTS_128HZ
1881 config SYS_SUPPORTS_250HZ
1884 config SYS_SUPPORTS_256HZ
1887 config SYS_SUPPORTS_1000HZ
1890 config SYS_SUPPORTS_1024HZ
1893 config SYS_SUPPORTS_ARBIT_HZ
1895 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1896 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1897 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1898 !SYS_SUPPORTS_1024HZ
1903 default 100 if HZ_100
1904 default 128 if HZ_128
1905 default 250 if HZ_250
1906 default 256 if HZ_256
1907 default 1000 if HZ_1000
1908 default 1024 if HZ_1024
1910 source "kernel/Kconfig.preempt"
1912 config MIPS_INSANE_LARGE
1913 bool "Support for large 64-bit configurations"
1914 depends on CPU_R10000 && 64BIT
1916 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1917 previous 64-bit processors which only supported 40 bit / 1TB. If you
1918 need processes of more than 1TB virtual address space, say Y here.
1919 This will result in additional memory usage, so it is not
1920 recommended for normal users.
1923 bool "Kexec system call (EXPERIMENTAL)"
1924 depends on EXPERIMENTAL
1926 kexec is a system call that implements the ability to shutdown your
1927 current kernel, and to start another kernel. It is like a reboot
1928 but it is independent of the system firmware. And like a reboot
1929 you can start any kernel with it, not just Linux.
1931 The name comes from the similarity to the exec system call.
1933 It is an ongoing process to be certain the hardware in a machine
1934 is properly shutdown, so do not be surprised if this code does not
1935 initially work for you. It may help to enable device hotplugging
1936 support. As of this writing the exact hardware interface is
1937 strongly in flux, so no good recommendation can be made.
1940 bool "Enable seccomp to safely compute untrusted bytecode"
1944 This kernel feature is useful for number crunching applications
1945 that may need to compute untrusted bytecode during their
1946 execution. By using pipes or other transports made available to
1947 the process as file descriptors supporting the read/write
1948 syscalls, it's possible to isolate those applications in
1949 their own address space using seccomp. Once seccomp is
1950 enabled via /proc/<pid>/seccomp, it cannot be disabled
1951 and the task is only allowed to execute a few safe syscalls
1952 defined by each seccomp mode.
1954 If unsure, say Y. Only embedded should say N here.
1958 config RWSEM_GENERIC_SPINLOCK
1962 config LOCKDEP_SUPPORT
1966 config STACKTRACE_SUPPORT
1970 source "init/Kconfig"
1972 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1980 bool "Support for PCI controller"
1981 depends on HW_HAS_PCI
1984 Find out whether you have a PCI motherboard. PCI is the name of a
1985 bus system, i.e. the way the CPU talks to the other stuff inside
1986 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1992 source "drivers/pci/Kconfig"
1995 # ISA support is now enabled via select. Too many systems still have the one
1996 # or other ISA chip on the board that users don't know about so don't expect
1997 # users to choose the right thing ...
2004 depends on HW_HAS_EISA
2006 select GENERIC_ISA_DMA
2008 The Extended Industry Standard Architecture (EISA) bus was
2009 developed as an open alternative to the IBM MicroChannel bus.
2011 The EISA bus provided some of the features of the IBM MicroChannel
2012 bus while maintaining backward compatibility with cards made for
2013 the older ISA bus. The EISA bus saw limited use between 1988 and
2014 1995 when it was made obsolete by the PCI bus.
2016 Say Y here if you are building a kernel for an EISA-based machine.
2020 source "drivers/eisa/Kconfig"
2023 bool "TURBOchannel support"
2024 depends on MACH_DECSTATION
2026 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2027 processors. Documentation on writing device drivers for TurboChannel
2029 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2032 # bool "Access.Bus support"
2045 source "drivers/pcmcia/Kconfig"
2047 source "drivers/pci/hotplug/Kconfig"
2051 menu "Executable file formats"
2053 source "fs/Kconfig.binfmt"
2059 bool "Include IRIX binary compatibility"
2060 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2062 config MIPS32_COMPAT
2063 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2066 Select this option if you want Linux/MIPS 32-bit binary
2067 compatibility. Since all software available for Linux/MIPS is
2068 currently 32-bit you should say Y here.
2072 depends on MIPS32_COMPAT
2075 config SYSVIPC_COMPAT
2077 depends on COMPAT && SYSVIPC
2081 bool "Kernel support for o32 binaries"
2082 depends on MIPS32_COMPAT
2084 Select this option if you want to run o32 binaries. These are pure
2085 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2086 existing binaries are in this format.
2091 bool "Kernel support for n32 binaries"
2092 depends on MIPS32_COMPAT
2094 Select this option if you want to run n32 binaries. These are
2095 64-bit binaries using 32-bit quantities for addressing and certain
2096 data that would normally be 64-bit. They are used in special
2103 default y if MIPS32_O32 || MIPS32_N32
2107 menu "Power management options"
2109 config ARCH_SUSPEND_POSSIBLE
2113 source "kernel/power/Kconfig"
2117 source "net/Kconfig"
2119 source "drivers/Kconfig"
2123 source "arch/mips/Kconfig.debug"
2125 source "security/Kconfig"
2127 source "crypto/Kconfig"
2129 source "lib/Kconfig"