7 # Horrible source of confusion. Die, die, die ...
11 mainmenu "Linux/MIPS Kernel Configuration"
13 menu "Machine selection"
23 bool "Alchemy processor based machines"
26 bool "Basler eXcite smart camera"
35 select SYS_HAS_CPU_RM9000
36 select SYS_SUPPORTS_32BIT_KERNEL
37 select SYS_SUPPORTS_BIG_ENDIAN
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
56 select SSB_PCICORE_HOSTMODE if PCI
58 select SYS_HAS_EARLY_PRINTK
61 Support for BCM47XX based boards
68 select DMA_NONCOHERENT
74 select PCI_GT64XXX_PCI0
75 select SYS_HAS_CPU_NEVADA
76 select SYS_HAS_EARLY_PRINTK
77 select SYS_SUPPORTS_32BIT_KERNEL
78 select SYS_SUPPORTS_64BIT_KERNEL
79 select SYS_SUPPORTS_LITTLE_ENDIAN
80 select GENERIC_HARDIRQS_NO__DO_IRQ
82 config MACH_DECSTATION
89 select CPU_DADDI_WORKAROUNDS if 64BIT
90 select CPU_R4000_WORKAROUNDS if 64BIT
91 select CPU_R4400_WORKAROUNDS if 64BIT
92 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_R3000
96 select SYS_HAS_CPU_R4X00
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
99 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_SUPPORTS_128HZ
101 select SYS_SUPPORTS_256HZ
102 select SYS_SUPPORTS_1024HZ
104 This enables support for DEC's MIPS based workstations. For details
105 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
106 DECstation porting pages on <http://decstation.unix-ag.org/>.
108 If you have one of the following DECstation Models you definitely
109 want to choose R4xx0 for the CPU Type:
116 otherwise choose R3000.
119 bool "Jazz family of machines"
122 select ARCH_MAY_HAVE_PC_FDC
125 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
126 select GENERIC_ISA_DMA
131 select SYS_HAS_CPU_R4X00
132 select SYS_SUPPORTS_32BIT_KERNEL
133 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
134 select SYS_SUPPORTS_100HZ
135 select GENERIC_HARDIRQS_NO__DO_IRQ
137 This a family of machines based on the MIPS R4030 chipset which was
138 used by several vendors to build RISC/os and Windows NT workstations.
139 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
140 Olivetti M700-10 workstations.
143 bool "LASAT Networks platforms"
146 select DMA_NONCOHERENT
147 select SYS_HAS_EARLY_PRINTK
150 select PCI_GT64XXX_PCI0
152 select R5000_CPU_SCACHE
153 select SYS_HAS_CPU_R5000
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select GENERIC_HARDIRQS_NO__DO_IRQ
160 bool "Lemote Fulong mini-PC"
161 select ARCH_SPARSEMEM_ENABLE
164 select SYS_HAS_CPU_LOONGSON2
165 select DMA_NONCOHERENT
168 select HAVE_STD_PC_SERIAL_PORT
173 select SYS_SUPPORTS_32BIT_KERNEL
174 select SYS_SUPPORTS_64BIT_KERNEL
175 select SYS_SUPPORTS_LITTLE_ENDIAN
176 select SYS_SUPPORTS_HIGHMEM
177 select SYS_HAS_EARLY_PRINTK
178 select GENERIC_HARDIRQS_NO__DO_IRQ
179 select GENERIC_ISA_DMA_SUPPORT_BROKEN
182 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
186 bool "MIPS Malta board"
187 select ARCH_MAY_HAVE_PC_FDC
192 select DMA_NONCOHERENT
193 select GENERIC_ISA_DMA
199 select MIPS_BOARDS_GEN
201 select MIPS_CPU_SCACHE
202 select PCI_GT64XXX_PCI0
205 select SYS_HAS_CPU_MIPS32_R1
206 select SYS_HAS_CPU_MIPS32_R2
207 select SYS_HAS_CPU_MIPS64_R1
208 select SYS_HAS_CPU_NEVADA
209 select SYS_HAS_CPU_RM7000
210 select SYS_HAS_EARLY_PRINTK
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_64BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_LITTLE_ENDIAN
215 select SYS_SUPPORTS_MIPS_CMP if BROKEN # because SYNC_R4K is broken
216 select SYS_SUPPORTS_MULTITHREADING
217 select SYS_SUPPORTS_SMARTMIPS
219 This enables support for the MIPS Technologies Malta evaluation
223 bool 'MIPS simulator (MIPSsim)'
226 select DMA_NONCOHERENT
227 select SYS_HAS_EARLY_PRINTK
230 select SYS_HAS_CPU_MIPS32_R1
231 select SYS_HAS_CPU_MIPS32_R2
232 select SYS_HAS_EARLY_PRINTK
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_BIG_ENDIAN
235 select SYS_SUPPORTS_MULTITHREADING
236 select SYS_SUPPORTS_LITTLE_ENDIAN
238 This option enables support for MIPS Technologies MIPSsim software
242 bool "NEC EMMA2RH Mark-eins"
245 select DMA_NONCOHERENT
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_BIG_ENDIAN
251 select SYS_SUPPORTS_LITTLE_ENDIAN
252 select SYS_HAS_CPU_R5500
254 This enables support for the NEC Mark-eins board with VR5500 CPU.
257 bool "NEC VR4100 series based machines"
260 select SYS_HAS_CPU_VR41XX
261 select GENERIC_HARDIRQS_NO__DO_IRQ
264 bool "NXP STB220 board"
267 Support for NXP Semiconductors STB220 Development Board.
274 Support for NXP Semiconductors STB225 Development Board.
277 bool "NXP PNX8550 based JBS board"
279 select SYS_SUPPORTS_LITTLE_ENDIAN
281 config PNX8550_STB810
282 bool "NXP PNX8550 based STB810 board"
284 select SYS_SUPPORTS_LITTLE_ENDIAN
287 bool "PMC-Sierra MSP chipsets"
288 depends on EXPERIMENTAL
289 select DMA_NONCOHERENT
291 select NO_EXCEPT_FILL
293 select SYS_HAS_CPU_MIPS32_R1
294 select SYS_HAS_CPU_MIPS32_R2
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
299 select SERIAL_8250_CONSOLE
301 This adds support for the PMC-Sierra family of Multi-Service
302 Processor System-On-A-Chips. These parts include a number
303 of integrated peripherals, interfaces and DSPs in addition to
304 a variety of MIPS cores.
307 bool "PMC-Sierra Yosemite eval board"
316 select SYS_HAS_CPU_RM9000
317 select SYS_HAS_EARLY_PRINTK
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_HIGHMEM
322 select SYS_SUPPORTS_SMP
324 Yosemite is an evaluation board for the RM9000x2 processor
325 manufactured by PMC-Sierra.
328 bool "SGI IP22 (Indy/Indigo2)"
334 select DEFAULT_SGI_PARTITION
335 select DMA_NONCOHERENT
339 select IP22_CPU_SCACHE
341 select GENERIC_ISA_DMA_SUPPORT_BROKEN
342 select SGI_HAS_DS1286
344 select SGI_HAS_INDYDOG
350 select SYS_HAS_CPU_R4X00
351 select SYS_HAS_CPU_R5000
352 select SYS_HAS_EARLY_PRINTK
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL
355 select SYS_SUPPORTS_BIG_ENDIAN
357 This are the SGI Indy, Challenge S and Indigo2, as well as certain
358 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
359 that runs on these, say Y here.
362 bool "SGI IP27 (Origin200/2000)"
366 select DEFAULT_SGI_PARTITION
368 select SYS_HAS_EARLY_PRINTK
370 select NR_CPUS_DEFAULT_64
371 select SYS_HAS_CPU_R10000
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_BIG_ENDIAN
374 select SYS_SUPPORTS_NUMA
375 select SYS_SUPPORTS_SMP
376 select GENERIC_HARDIRQS_NO__DO_IRQ
378 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
379 workstations. To compile a Linux kernel that runs on these, say Y
383 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
384 depends on EXPERIMENTAL
390 select DEFAULT_SGI_PARTITION
391 select DMA_NONCOHERENT
392 select GENERIC_ISA_DMA_SUPPORT_BROKEN
397 select SGI_HAS_DS1286
399 select SGI_HAS_INDYDOG
405 select SYS_HAS_CPU_R10000
406 select SYS_HAS_EARLY_PRINTK
407 select SYS_SUPPORTS_64BIT_KERNEL
408 select SYS_SUPPORTS_BIG_ENDIAN
410 This is the SGI Indigo2 with R10000 processor. To compile a Linux
411 kernel that runs on these, say Y here.
420 select DMA_NONCOHERENT
423 select R5000_CPU_SCACHE
424 select RM7000_CPU_SCACHE
425 select SYS_HAS_CPU_R5000
426 select SYS_HAS_CPU_R10000 if BROKEN
427 select SYS_HAS_CPU_RM7000
428 select SYS_HAS_CPU_NEVADA
429 select SYS_SUPPORTS_64BIT_KERNEL
430 select SYS_SUPPORTS_BIG_ENDIAN
432 If you want this kernel to run on SGI O2 workstation, say Y here.
435 bool "Sibyte BCM91120C-CRhine"
436 depends on EXPERIMENTAL
439 select SIBYTE_BCM1120
441 select SYS_HAS_CPU_SB1
442 select SYS_SUPPORTS_BIG_ENDIAN
443 select SYS_SUPPORTS_LITTLE_ENDIAN
446 bool "Sibyte BCM91120x-Carmel"
447 depends on EXPERIMENTAL
450 select SIBYTE_BCM1120
452 select SYS_HAS_CPU_SB1
453 select SYS_SUPPORTS_BIG_ENDIAN
454 select SYS_SUPPORTS_LITTLE_ENDIAN
457 bool "Sibyte BCM91125C-CRhone"
458 depends on EXPERIMENTAL
461 select SIBYTE_BCM1125
463 select SYS_HAS_CPU_SB1
464 select SYS_SUPPORTS_BIG_ENDIAN
465 select SYS_SUPPORTS_HIGHMEM
466 select SYS_SUPPORTS_LITTLE_ENDIAN
469 bool "Sibyte BCM91125E-Rhone"
470 depends on EXPERIMENTAL
473 select SIBYTE_BCM1125H
475 select SYS_HAS_CPU_SB1
476 select SYS_SUPPORTS_BIG_ENDIAN
477 select SYS_SUPPORTS_LITTLE_ENDIAN
480 bool "Sibyte BCM91250A-SWARM"
483 select NR_CPUS_DEFAULT_2
486 select SYS_HAS_CPU_SB1
487 select SYS_SUPPORTS_BIG_ENDIAN
488 select SYS_SUPPORTS_HIGHMEM
489 select SYS_SUPPORTS_LITTLE_ENDIAN
490 select ZONE_DMA32 if 64BIT
492 config SIBYTE_LITTLESUR
493 bool "Sibyte BCM91250C2-LittleSur"
494 depends on EXPERIMENTAL
497 select NR_CPUS_DEFAULT_2
500 select SYS_HAS_CPU_SB1
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_HIGHMEM
503 select SYS_SUPPORTS_LITTLE_ENDIAN
505 config SIBYTE_SENTOSA
506 bool "Sibyte BCM91250E-Sentosa"
507 depends on EXPERIMENTAL
510 select NR_CPUS_DEFAULT_2
513 select SYS_HAS_CPU_SB1
514 select SYS_SUPPORTS_BIG_ENDIAN
515 select SYS_SUPPORTS_LITTLE_ENDIAN
518 bool "Sibyte BCM91480B-BigSur"
521 select NR_CPUS_DEFAULT_4
522 select SIBYTE_BCM1x80
524 select SYS_HAS_CPU_SB1
525 select SYS_SUPPORTS_BIG_ENDIAN
526 select SYS_SUPPORTS_HIGHMEM
527 select SYS_SUPPORTS_LITTLE_ENDIAN
528 select ZONE_DMA32 if 64BIT
531 bool "SNI RM200/300/400"
532 select ARC if CPU_LITTLE_ENDIAN
533 select ARC32 if CPU_LITTLE_ENDIAN
534 select SNIPROM if CPU_BIG_ENDIAN
535 select ARCH_MAY_HAVE_PC_FDC
539 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
540 select DMA_NONCOHERENT
541 select GENERIC_ISA_DMA
548 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
549 select SYS_HAS_CPU_R4X00
550 select SYS_HAS_CPU_R5000
551 select SYS_HAS_CPU_R10000
552 select R5000_CPU_SCACHE
553 select SYS_HAS_EARLY_PRINTK
554 select SYS_SUPPORTS_32BIT_KERNEL
555 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_HIGHMEM
558 select SYS_SUPPORTS_LITTLE_ENDIAN
560 The SNI RM200/300/400 are MIPS-based machines manufactured by
561 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
562 Technology and now in turn merged with Fujitsu. Say Y here to
563 support this machine type.
566 bool "Toshiba TX39 series based machines"
569 bool "Toshiba TX49 series based machines"
571 config MIKROTIK_RB532
572 bool "Mikrotik RB532 boards"
575 select DMA_NONCOHERENT
576 select GENERIC_HARDIRQS_NO__DO_IRQ
579 select SYS_HAS_CPU_MIPS32_R1
580 select SYS_SUPPORTS_32BIT_KERNEL
581 select SYS_SUPPORTS_LITTLE_ENDIAN
584 select ARCH_REQUIRE_GPIOLIB
586 Support the Mikrotik(tm) RouterBoard 532 series,
587 based on the IDT RC32434 SoC.
590 bool "Wind River PPMC board"
595 select DMA_NONCOHERENT
597 select PCI_GT64XXX_PCI0
599 select SYS_HAS_CPU_MIPS32_R1
600 select SYS_HAS_CPU_MIPS32_R2
601 select SYS_HAS_CPU_MIPS64_R1
602 select SYS_HAS_CPU_NEVADA
603 select SYS_HAS_CPU_RM7000
604 select SYS_SUPPORTS_32BIT_KERNEL
605 select SYS_SUPPORTS_64BIT_KERNEL
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select SYS_SUPPORTS_LITTLE_ENDIAN
609 This enables support for the Wind River MIPS32 4KC PPMC evaluation
610 board, which is based on GT64120 bridge chip.
614 source "arch/mips/alchemy/Kconfig"
615 source "arch/mips/basler/excite/Kconfig"
616 source "arch/mips/jazz/Kconfig"
617 source "arch/mips/lasat/Kconfig"
618 source "arch/mips/pmc-sierra/Kconfig"
619 source "arch/mips/sgi-ip27/Kconfig"
620 source "arch/mips/sibyte/Kconfig"
621 source "arch/mips/txx9/Kconfig"
622 source "arch/mips/vr41xx/Kconfig"
626 config RWSEM_GENERIC_SPINLOCK
630 config RWSEM_XCHGADD_ALGORITHM
633 config ARCH_HAS_ILOG2_U32
637 config ARCH_HAS_ILOG2_U64
641 config ARCH_SUPPORTS_OPROFILE
643 default y if !MIPS_MT_SMTC
645 config GENERIC_FIND_NEXT_BIT
649 config GENERIC_HWEIGHT
653 config GENERIC_CALIBRATE_DELAY
657 config GENERIC_CLOCKEVENTS
665 config GENERIC_CMOS_UPDATE
669 config SCHED_NO_NO_OMIT_FRAME_POINTER
673 config GENERIC_HARDIRQS_NO__DO_IRQ
678 # Select some configuration options automatically based on user selections.
683 config ARCH_MAY_HAVE_PC_FDC
721 select ARCH_REQUIRE_GPIOLIB
733 config DMA_NONCOHERENT
735 select DMA_NEED_PCI_MAP_STATE
737 config DMA_NEED_PCI_MAP_STATE
741 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
742 depends on SYS_HAS_EARLY_PRINTK
745 This option enables special console drivers which allow the kernel
746 to print messages very early in the bootup process.
748 This is useful for kernel debugging when your machine crashes very
749 early before the console code is initialized. For normal operation,
750 it is not recommended because it looks ugly on some machines and
751 doesn't cooperate with an X server. You should normally say N here,
752 unless you want to debug such a crash.
754 config SYS_HAS_EARLY_PRINTK
773 config MIPS_DISABLE_OBSOLETE_IDE
782 config GENERIC_ISA_DMA
784 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
786 config GENERIC_ISA_DMA_SUPPORT_BROKEN
788 select GENERIC_ISA_DMA
794 # Endianess selection. Sufficiently obscure so many users don't know what to
795 # answer,so we try hard to limit the available choices. Also the use of a
796 # choice statement should be more obvious to the user.
799 prompt "Endianess selection"
801 Some MIPS machines can be configured for either little or big endian
802 byte order. These modes require different kernels and a different
803 Linux distribution. In general there is one preferred byteorder for a
804 particular system but some systems are just as commonly used in the
805 one or the other endianness.
807 config CPU_BIG_ENDIAN
809 depends on SYS_SUPPORTS_BIG_ENDIAN
811 config CPU_LITTLE_ENDIAN
813 depends on SYS_SUPPORTS_LITTLE_ENDIAN
818 config SYS_SUPPORTS_APM_EMULATION
821 config SYS_SUPPORTS_BIG_ENDIAN
824 config SYS_SUPPORTS_LITTLE_ENDIAN
851 config MIPS_BOARDS_GEN
854 config PCI_GT64XXX_PCI0
857 config NO_EXCEPT_FILL
869 select DMA_NONCOHERENT
870 select SYS_HAS_CPU_MIPS32_R2
871 select SYS_SUPPORTS_32BIT_KERNEL
872 select SYS_SUPPORTS_LITTLE_ENDIAN
873 select SYS_SUPPORTS_BIG_ENDIAN
874 select GENERIC_HARDIRQS_NO__DO_IRQ
876 select CPU_MIPSR2_IRQ_VI
888 select DMA_NONCOHERENT
890 select SYS_HAS_CPU_MIPS32_R1
891 select SYS_HAS_EARLY_PRINTK
892 select SYS_SUPPORTS_32BIT_KERNEL
893 select GENERIC_HARDIRQS_NO__DO_IRQ
907 config SGI_HAS_DS1286
910 config SGI_HAS_INDYDOG
928 config DEFAULT_SGI_PARTITION
940 config MIPS_L1_CACHE_SHIFT
942 default "4" if MACH_DECSTATION || MIKROTIK_RB532
943 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM
944 default "4" if PMC_MSP4200_EVAL
947 config HAVE_STD_PC_SERIAL_PORT
951 bool "ARC console support"
952 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
956 depends on MACH_JAZZ || SNI_RM || SGI_IP32
961 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
978 depends on SYS_HAS_CPU_LOONGSON2
979 select CPU_SUPPORTS_32BIT_KERNEL
980 select CPU_SUPPORTS_64BIT_KERNEL
981 select CPU_SUPPORTS_HIGHMEM
983 The Loongson 2E processor implements the MIPS III instruction set
984 with many extensions.
987 bool "MIPS32 Release 1"
988 depends on SYS_HAS_CPU_MIPS32_R1
990 select CPU_HAS_PREFETCH
991 select CPU_SUPPORTS_32BIT_KERNEL
992 select CPU_SUPPORTS_HIGHMEM
994 Choose this option to build a kernel for release 1 or later of the
995 MIPS32 architecture. Most modern embedded systems with a 32-bit
996 MIPS processor are based on a MIPS32 processor. If you know the
997 specific type of processor in your system, choose those that one
998 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
999 Release 2 of the MIPS32 architecture is available since several
1000 years so chances are you even have a MIPS32 Release 2 processor
1001 in which case you should choose CPU_MIPS32_R2 instead for better
1004 config CPU_MIPS32_R2
1005 bool "MIPS32 Release 2"
1006 depends on SYS_HAS_CPU_MIPS32_R2
1008 select CPU_HAS_PREFETCH
1009 select CPU_SUPPORTS_32BIT_KERNEL
1010 select CPU_SUPPORTS_HIGHMEM
1012 Choose this option to build a kernel for release 2 or later of the
1013 MIPS32 architecture. Most modern embedded systems with a 32-bit
1014 MIPS processor are based on a MIPS32 processor. If you know the
1015 specific type of processor in your system, choose those that one
1016 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1018 config CPU_MIPS64_R1
1019 bool "MIPS64 Release 1"
1020 depends on SYS_HAS_CPU_MIPS64_R1
1022 select CPU_HAS_PREFETCH
1023 select CPU_SUPPORTS_32BIT_KERNEL
1024 select CPU_SUPPORTS_64BIT_KERNEL
1025 select CPU_SUPPORTS_HIGHMEM
1027 Choose this option to build a kernel for release 1 or later of the
1028 MIPS64 architecture. Many modern embedded systems with a 64-bit
1029 MIPS processor are based on a MIPS64 processor. If you know the
1030 specific type of processor in your system, choose those that one
1031 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1032 Release 2 of the MIPS64 architecture is available since several
1033 years so chances are you even have a MIPS64 Release 2 processor
1034 in which case you should choose CPU_MIPS64_R2 instead for better
1037 config CPU_MIPS64_R2
1038 bool "MIPS64 Release 2"
1039 depends on SYS_HAS_CPU_MIPS64_R2
1041 select CPU_HAS_PREFETCH
1042 select CPU_SUPPORTS_32BIT_KERNEL
1043 select CPU_SUPPORTS_64BIT_KERNEL
1044 select CPU_SUPPORTS_HIGHMEM
1046 Choose this option to build a kernel for release 2 or later of the
1047 MIPS64 architecture. Many modern embedded systems with a 64-bit
1048 MIPS processor are based on a MIPS64 processor. If you know the
1049 specific type of processor in your system, choose those that one
1050 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1054 depends on SYS_HAS_CPU_R3000
1056 select CPU_SUPPORTS_32BIT_KERNEL
1057 select CPU_SUPPORTS_HIGHMEM
1059 Please make sure to pick the right CPU type. Linux/MIPS is not
1060 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1061 *not* work on R4000 machines and vice versa. However, since most
1062 of the supported machines have an R4000 (or similar) CPU, R4x00
1063 might be a safe bet. If the resulting kernel does not work,
1064 try to recompile with R3000.
1068 depends on SYS_HAS_CPU_TX39XX
1069 select CPU_SUPPORTS_32BIT_KERNEL
1073 depends on SYS_HAS_CPU_VR41XX
1074 select CPU_SUPPORTS_32BIT_KERNEL
1075 select CPU_SUPPORTS_64BIT_KERNEL
1077 The options selects support for the NEC VR4100 series of processors.
1078 Only choose this option if you have one of these processors as a
1079 kernel built with this option will not run on any other type of
1080 processor or vice versa.
1084 depends on SYS_HAS_CPU_R4300
1086 select CPU_SUPPORTS_32BIT_KERNEL
1087 select CPU_SUPPORTS_64BIT_KERNEL
1089 MIPS Technologies R4300-series processors.
1093 depends on SYS_HAS_CPU_R4X00
1095 select CPU_SUPPORTS_32BIT_KERNEL
1096 select CPU_SUPPORTS_64BIT_KERNEL
1098 MIPS Technologies R4000-series processors other than 4300, including
1099 the R4000, R4400, R4600, and 4700.
1103 depends on SYS_HAS_CPU_TX49XX
1105 select CPU_HAS_PREFETCH
1106 select CPU_SUPPORTS_32BIT_KERNEL
1107 select CPU_SUPPORTS_64BIT_KERNEL
1111 depends on SYS_HAS_CPU_R5000
1113 select CPU_SUPPORTS_32BIT_KERNEL
1114 select CPU_SUPPORTS_64BIT_KERNEL
1116 MIPS Technologies R5000-series processors other than the Nevada.
1120 depends on SYS_HAS_CPU_R5432
1122 select CPU_SUPPORTS_32BIT_KERNEL
1123 select CPU_SUPPORTS_64BIT_KERNEL
1127 depends on SYS_HAS_CPU_R5500
1129 select CPU_SUPPORTS_32BIT_KERNEL
1130 select CPU_SUPPORTS_64BIT_KERNEL
1132 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1137 depends on EXPERIMENTAL
1139 depends on SYS_HAS_CPU_R6000
1140 select CPU_SUPPORTS_32BIT_KERNEL
1142 MIPS Technologies R6000 and R6000A series processors. Note these
1143 processors are extremely rare and the support for them is incomplete.
1147 depends on SYS_HAS_CPU_NEVADA
1149 select CPU_SUPPORTS_32BIT_KERNEL
1150 select CPU_SUPPORTS_64BIT_KERNEL
1152 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1156 depends on EXPERIMENTAL
1157 depends on SYS_HAS_CPU_R8000
1159 select CPU_HAS_PREFETCH
1160 select CPU_SUPPORTS_64BIT_KERNEL
1162 MIPS Technologies R8000 processors. Note these processors are
1163 uncommon and the support for them is incomplete.
1167 depends on SYS_HAS_CPU_R10000
1169 select CPU_HAS_PREFETCH
1170 select CPU_SUPPORTS_32BIT_KERNEL
1171 select CPU_SUPPORTS_64BIT_KERNEL
1172 select CPU_SUPPORTS_HIGHMEM
1174 MIPS Technologies R10000-series processors.
1178 depends on SYS_HAS_CPU_RM7000
1180 select CPU_HAS_PREFETCH
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1187 depends on SYS_HAS_CPU_RM9000
1189 select CPU_HAS_PREFETCH
1190 select CPU_SUPPORTS_32BIT_KERNEL
1191 select CPU_SUPPORTS_64BIT_KERNEL
1192 select CPU_SUPPORTS_HIGHMEM
1193 select WEAK_ORDERING
1197 depends on SYS_HAS_CPU_SB1
1199 select CPU_SUPPORTS_32BIT_KERNEL
1200 select CPU_SUPPORTS_64BIT_KERNEL
1201 select CPU_SUPPORTS_HIGHMEM
1202 select WEAK_ORDERING
1206 config SYS_HAS_CPU_LOONGSON2
1209 config SYS_HAS_CPU_MIPS32_R1
1212 config SYS_HAS_CPU_MIPS32_R2
1215 config SYS_HAS_CPU_MIPS64_R1
1218 config SYS_HAS_CPU_MIPS64_R2
1221 config SYS_HAS_CPU_R3000
1224 config SYS_HAS_CPU_TX39XX
1227 config SYS_HAS_CPU_VR41XX
1230 config SYS_HAS_CPU_R4300
1233 config SYS_HAS_CPU_R4X00
1236 config SYS_HAS_CPU_TX49XX
1239 config SYS_HAS_CPU_R5000
1242 config SYS_HAS_CPU_R5432
1245 config SYS_HAS_CPU_R5500
1248 config SYS_HAS_CPU_R6000
1251 config SYS_HAS_CPU_NEVADA
1254 config SYS_HAS_CPU_R8000
1257 config SYS_HAS_CPU_R10000
1260 config SYS_HAS_CPU_RM7000
1263 config SYS_HAS_CPU_RM9000
1266 config SYS_HAS_CPU_SB1
1270 # CPU may reorder R->R, R->W, W->R, W->W
1271 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1273 config WEAK_ORDERING
1277 # CPU may reorder reads and writes beyond LL/SC
1278 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1280 config WEAK_REORDERING_BEYOND_LLSC
1285 # These two indicate any level of the MIPS32 and MIPS64 architecture
1289 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1293 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1296 # These two indicate the revision of the architecture, either Release 1 or Release 2
1300 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1304 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1306 config SYS_SUPPORTS_32BIT_KERNEL
1308 config SYS_SUPPORTS_64BIT_KERNEL
1310 config CPU_SUPPORTS_32BIT_KERNEL
1312 config CPU_SUPPORTS_64BIT_KERNEL
1316 # Set to y for ptrace access to watch registers.
1318 config HARDWARE_WATCHPOINTS
1320 default y if CPU_MIPS32 || CPU_MIPS64
1326 prompt "Kernel code model"
1328 You should only select this option if you have a workload that
1329 actually benefits from 64-bit processing or if your machine has
1330 large memory. You will only be presented a single option in this
1331 menu if your system does not support both 32-bit and 64-bit kernels.
1334 bool "32-bit kernel"
1335 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1338 Select this option if you want to build a 32-bit kernel.
1340 bool "64-bit kernel"
1341 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1343 Select this option if you want to build a 64-bit kernel.
1348 prompt "Kernel page size"
1349 default PAGE_SIZE_4KB
1351 config PAGE_SIZE_4KB
1354 This option select the standard 4kB Linux page size. On some
1355 R3000-family processors this is the only available page size. Using
1356 4kB page size will minimize memory consumption and is therefore
1357 recommended for low memory systems.
1359 config PAGE_SIZE_8KB
1361 depends on EXPERIMENTAL && CPU_R8000
1363 Using 8kB page size will result in higher performance kernel at
1364 the price of higher memory consumption. This option is available
1365 only on the R8000 processor. Not that at the time of this writing
1366 this option is still high experimental; there are also issues with
1367 compatibility of user applications.
1369 config PAGE_SIZE_16KB
1371 depends on !CPU_R3000 && !CPU_TX39XX
1373 Using 16kB page size will result in higher performance kernel at
1374 the price of higher memory consumption. This option is available on
1375 all non-R3000 family processors. Note that you will need a suitable
1376 Linux distribution to support this.
1378 config PAGE_SIZE_64KB
1380 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1382 Using 64kB page size will result in higher performance kernel at
1383 the price of higher memory consumption. This option is available on
1384 all non-R3000 family processor. Not that at the time of this
1385 writing this option is still high experimental.
1392 config IP22_CPU_SCACHE
1397 # Support for a MIPS32 / MIPS64 style S-caches
1399 config MIPS_CPU_SCACHE
1403 config R5000_CPU_SCACHE
1407 config RM7000_CPU_SCACHE
1411 config SIBYTE_DMA_PAGEOPS
1412 bool "Use DMA to clear/copy pages"
1415 Instead of using the CPU to zero and copy pages, use a Data Mover
1416 channel. These DMA channels are otherwise unused by the standard
1417 SiByte Linux port. Seems to give a small performance benefit.
1419 config CPU_HAS_PREFETCH
1423 prompt "MIPS MT options"
1425 config MIPS_MT_DISABLED
1426 bool "Disable multithreading support."
1428 Use this option if your workload can't take advantage of
1429 MIPS hardware multithreading support. On systems that don't have
1430 the option of an MT-enabled processor this option will be the only
1431 option in this menu.
1434 bool "Use 1 TC on each available VPE for SMP"
1435 depends on SYS_SUPPORTS_MULTITHREADING
1436 select CPU_MIPSR2_IRQ_VI
1437 select CPU_MIPSR2_IRQ_EI
1439 select NR_CPUS_DEFAULT_2
1441 select SYS_SUPPORTS_SCHED_SMT if SMP
1442 select SYS_SUPPORTS_SMP
1445 This is a kernel model which is also known a VSMP or lately
1446 has been marketesed into SMVP.
1449 bool "SMTC: Use all TCs on all VPEs for SMP"
1450 depends on CPU_MIPS32_R2
1451 #depends on CPU_MIPS64_R2 # once there is hardware ...
1452 depends on SYS_SUPPORTS_MULTITHREADING
1453 select CPU_MIPSR2_IRQ_VI
1454 select CPU_MIPSR2_IRQ_EI
1456 select NR_CPUS_DEFAULT_8
1458 select SYS_SUPPORTS_SMP
1461 This is a kernel model which is known a SMTC or lately has been
1462 marketesed into SMVP.
1470 bool "SMT (multithreading) scheduler support"
1471 depends on SYS_SUPPORTS_SCHED_SMT
1474 SMT scheduler support improves the CPU scheduler's decision making
1475 when dealing with MIPS MT enabled cores at a cost of slightly
1476 increased overhead in some places. If unsure say N here.
1478 config SYS_SUPPORTS_SCHED_SMT
1482 config SYS_SUPPORTS_MULTITHREADING
1485 config MIPS_MT_FPAFF
1486 bool "Dynamic FPU affinity for FP-intensive threads"
1488 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1490 config MIPS_VPE_LOADER
1491 bool "VPE loader support."
1492 depends on SYS_SUPPORTS_MULTITHREADING
1493 select CPU_MIPSR2_IRQ_VI
1494 select CPU_MIPSR2_IRQ_EI
1497 Includes a loader for loading an elf relocatable object
1498 onto another VPE and running it.
1500 config MIPS_MT_SMTC_IM_BACKSTOP
1501 bool "Use per-TC register bits as backstop for inhibited IM bits"
1502 depends on MIPS_MT_SMTC
1505 To support multiple TC microthreads acting as "CPUs" within
1506 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1507 during interrupt handling. To support legacy drivers and interrupt
1508 controller management code, SMTC has a "backstop" to track and
1509 if necessary restore the interrupt mask. This has some performance
1510 impact on interrupt service overhead.
1512 config MIPS_MT_SMTC_IRQAFF
1513 bool "Support IRQ affinity API"
1514 depends on MIPS_MT_SMTC
1517 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1518 for SMTC Linux kernel. Requires platform support, of which
1519 an example can be found in the MIPS kernel i8259 and Malta
1520 platform code. Adds some overhead to interrupt dispatch, and
1521 should be used only if you know what you are doing.
1523 config MIPS_VPE_LOADER_TOM
1524 bool "Load VPE program into memory hidden from linux"
1525 depends on MIPS_VPE_LOADER
1528 The loader can use memory that is present but has been hidden from
1529 Linux using the kernel command line option "mem=xxMB". It's up to
1530 you to ensure the amount you put in the option and the space your
1531 program requires is less or equal to the amount physically present.
1533 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1534 config MIPS_VPE_APSP_API
1535 bool "Enable support for AP/SP API (RTLX)"
1536 depends on MIPS_VPE_LOADER
1539 config MIPS_APSP_KSPD
1541 depends on MIPS_VPE_APSP_API
1544 KSPD is a kernel daemon that accepts syscall requests from the SP
1545 side, actions them and returns the results. It also handles the
1546 "exit" syscall notifying other kernel modules the SP program is
1547 exiting. You probably want to say yes here.
1550 bool "MIPS CMP framework support"
1551 depends on SYS_SUPPORTS_MIPS_CMP
1552 select SYNC_R4K if BROKEN
1553 select SYS_SUPPORTS_SMP
1554 select SYS_SUPPORTS_SCHED_SMT if SMP
1555 select WEAK_ORDERING
1558 This is a placeholder option for the GCMP work. It will need to
1559 be handled differently...
1561 config SB1_PASS_1_WORKAROUNDS
1563 depends on CPU_SB1_PASS_1
1566 config SB1_PASS_2_WORKAROUNDS
1568 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1571 config SB1_PASS_2_1_WORKAROUNDS
1573 depends on CPU_SB1 && CPU_SB1_PASS_2
1576 config 64BIT_PHYS_ADDR
1582 config CPU_HAS_SMARTMIPS
1583 depends on SYS_SUPPORTS_SMARTMIPS
1584 bool "Support for the SmartMIPS ASE"
1586 SmartMIPS is a extension of the MIPS32 architecture aimed at
1587 increased security at both hardware and software level for
1588 smartcards. Enabling this option will allow proper use of the
1589 SmartMIPS instructions by Linux applications. However a kernel with
1590 this option will not work on a MIPS core without SmartMIPS core. If
1591 you don't know you probably don't have SmartMIPS and should say N
1598 # Vectored interrupt mode is an R2 feature
1600 config CPU_MIPSR2_IRQ_VI
1604 # Extended interrupt mode is an R2 feature
1606 config CPU_MIPSR2_IRQ_EI
1611 depends on !CPU_R3000
1614 config GENERIC_CLOCKEVENTS_BROADCAST
1620 config CPU_DADDI_WORKAROUNDS
1623 config CPU_R4000_WORKAROUNDS
1625 select CPU_R4400_WORKAROUNDS
1627 config CPU_R4400_WORKAROUNDS
1631 # Use the generic interrupt handling code in kernel/irq/:
1633 config GENERIC_HARDIRQS
1637 config GENERIC_IRQ_PROBE
1645 # - Highmem only makes sense for the 32-bit kernel.
1646 # - The current highmem code will only work properly on physically indexed
1647 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1648 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1649 # moment we protect the user and offer the highmem option only on machines
1650 # where it's known to be safe. This will not offer highmem on a few systems
1651 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1652 # indexed CPUs but we're playing safe.
1653 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1654 # know they might have memory configurations that could make use of highmem
1658 bool "High Memory Support"
1659 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1661 config CPU_SUPPORTS_HIGHMEM
1664 config SYS_SUPPORTS_HIGHMEM
1667 config SYS_SUPPORTS_SMARTMIPS
1670 config ARCH_FLATMEM_ENABLE
1674 config ARCH_DISCONTIGMEM_ENABLE
1676 default y if SGI_IP27
1678 Say Y to support efficient handling of discontiguous physical memory,
1679 for architectures which are either NUMA (Non-Uniform Memory Access)
1680 or have huge holes in the physical address space for other reasons.
1681 See <file:Documentation/vm/numa> for more.
1683 config ARCH_POPULATES_NODE_MAP
1686 config ARCH_SPARSEMEM_ENABLE
1688 select SPARSEMEM_STATIC
1692 depends on SYS_SUPPORTS_NUMA
1694 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1695 Access). This option improves performance on systems with more
1696 than two nodes; on two node systems it is generally better to
1697 leave it disabled; on single node systems disable this option
1700 config SYS_SUPPORTS_NUMA
1706 depends on NEED_MULTIPLE_NODES
1711 bool "Multi-Processing support"
1712 depends on SYS_SUPPORTS_SMP
1714 select USE_GENERIC_SMP_HELPERS
1716 This enables support for systems with more than one CPU. If you have
1717 a system with only one CPU, like most personal computers, say N. If
1718 you have a system with more than one CPU, say Y.
1720 If you say N here, the kernel will run on single and multiprocessor
1721 machines, but will use only one CPU of a multiprocessor machine. If
1722 you say Y here, the kernel will run on many, but not all,
1723 singleprocessor machines. On a singleprocessor machine, the kernel
1724 will run faster if you say N here.
1726 People using multiprocessor machines who say Y here should also say
1727 Y to "Enhanced Real Time Clock Support", below.
1729 See also the SMP-HOWTO available at
1730 <http://www.tldp.org/docs.html#howto>.
1732 If you don't know what to do here, say N.
1737 config SYS_SUPPORTS_MIPS_CMP
1740 config SYS_SUPPORTS_SMP
1743 config NR_CPUS_DEFAULT_1
1746 config NR_CPUS_DEFAULT_2
1749 config NR_CPUS_DEFAULT_4
1752 config NR_CPUS_DEFAULT_8
1755 config NR_CPUS_DEFAULT_16
1758 config NR_CPUS_DEFAULT_32
1761 config NR_CPUS_DEFAULT_64
1765 int "Maximum number of CPUs (2-64)"
1766 range 1 64 if NR_CPUS_DEFAULT_1
1768 default "1" if NR_CPUS_DEFAULT_1
1769 default "2" if NR_CPUS_DEFAULT_2
1770 default "4" if NR_CPUS_DEFAULT_4
1771 default "8" if NR_CPUS_DEFAULT_8
1772 default "16" if NR_CPUS_DEFAULT_16
1773 default "32" if NR_CPUS_DEFAULT_32
1774 default "64" if NR_CPUS_DEFAULT_64
1776 This allows you to specify the maximum number of CPUs which this
1777 kernel will support. The maximum supported value is 32 for 32-bit
1778 kernel and 64 for 64-bit kernels; the minimum value which makes
1779 sense is 1 for Qemu (useful only for kernel debugging purposes)
1780 and 2 for all others.
1782 This is purely to save memory - each supported CPU adds
1783 approximately eight kilobytes to the kernel image. For best
1784 performance should round up your number of processors to the next
1787 source "kernel/time/Kconfig"
1790 # Timer Interrupt Frequency Configuration
1794 prompt "Timer frequency"
1797 Allows the configuration of the timer frequency.
1800 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1803 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1806 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1809 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1812 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1815 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1818 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1822 config SYS_SUPPORTS_48HZ
1825 config SYS_SUPPORTS_100HZ
1828 config SYS_SUPPORTS_128HZ
1831 config SYS_SUPPORTS_250HZ
1834 config SYS_SUPPORTS_256HZ
1837 config SYS_SUPPORTS_1000HZ
1840 config SYS_SUPPORTS_1024HZ
1843 config SYS_SUPPORTS_ARBIT_HZ
1845 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1846 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1847 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1848 !SYS_SUPPORTS_1024HZ
1853 default 100 if HZ_100
1854 default 128 if HZ_128
1855 default 250 if HZ_250
1856 default 256 if HZ_256
1857 default 1000 if HZ_1000
1858 default 1024 if HZ_1024
1860 source "kernel/Kconfig.preempt"
1862 config MIPS_INSANE_LARGE
1863 bool "Support for large 64-bit configurations"
1864 depends on CPU_R10000 && 64BIT
1866 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1867 previous 64-bit processors which only supported 40 bit / 1TB. If you
1868 need processes of more than 1TB virtual address space, say Y here.
1869 This will result in additional memory usage, so it is not
1870 recommended for normal users.
1873 bool "Kexec system call (EXPERIMENTAL)"
1874 depends on EXPERIMENTAL
1876 kexec is a system call that implements the ability to shutdown your
1877 current kernel, and to start another kernel. It is like a reboot
1878 but it is independent of the system firmware. And like a reboot
1879 you can start any kernel with it, not just Linux.
1881 The name comes from the similarity to the exec system call.
1883 It is an ongoing process to be certain the hardware in a machine
1884 is properly shutdown, so do not be surprised if this code does not
1885 initially work for you. It may help to enable device hotplugging
1886 support. As of this writing the exact hardware interface is
1887 strongly in flux, so no good recommendation can be made.
1890 bool "Enable seccomp to safely compute untrusted bytecode"
1894 This kernel feature is useful for number crunching applications
1895 that may need to compute untrusted bytecode during their
1896 execution. By using pipes or other transports made available to
1897 the process as file descriptors supporting the read/write
1898 syscalls, it's possible to isolate those applications in
1899 their own address space using seccomp. Once seccomp is
1900 enabled via /proc/<pid>/seccomp, it cannot be disabled
1901 and the task is only allowed to execute a few safe syscalls
1902 defined by each seccomp mode.
1904 If unsure, say Y. Only embedded should say N here.
1908 config RWSEM_GENERIC_SPINLOCK
1912 config LOCKDEP_SUPPORT
1916 config STACKTRACE_SUPPORT
1920 source "init/Kconfig"
1922 config PROBE_INITRD_HEADER
1923 bool "Probe initrd header created by addinitrd"
1924 depends on BLK_DEV_INITRD
1926 Probe initrd header at the last page of kernel image.
1927 Say Y here if you are using arch/mips/boot/addinitrd.c to
1928 add initrd or initramfs image to the kernel image.
1931 source "kernel/Kconfig.freezer"
1933 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1941 bool "Support for PCI controller"
1942 depends on HW_HAS_PCI
1945 Find out whether you have a PCI motherboard. PCI is the name of a
1946 bus system, i.e. the way the CPU talks to the other stuff inside
1947 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1953 source "drivers/pci/Kconfig"
1956 # ISA support is now enabled via select. Too many systems still have the one
1957 # or other ISA chip on the board that users don't know about so don't expect
1958 # users to choose the right thing ...
1965 depends on HW_HAS_EISA
1967 select GENERIC_ISA_DMA
1969 The Extended Industry Standard Architecture (EISA) bus was
1970 developed as an open alternative to the IBM MicroChannel bus.
1972 The EISA bus provided some of the features of the IBM MicroChannel
1973 bus while maintaining backward compatibility with cards made for
1974 the older ISA bus. The EISA bus saw limited use between 1988 and
1975 1995 when it was made obsolete by the PCI bus.
1977 Say Y here if you are building a kernel for an EISA-based machine.
1981 source "drivers/eisa/Kconfig"
1984 bool "TURBOchannel support"
1985 depends on MACH_DECSTATION
1987 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1988 processors. Documentation on writing device drivers for TurboChannel
1990 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1993 # bool "Access.Bus support"
2006 source "drivers/pcmcia/Kconfig"
2008 source "drivers/pci/hotplug/Kconfig"
2012 menu "Executable file formats"
2014 source "fs/Kconfig.binfmt"
2019 config MIPS32_COMPAT
2020 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2023 Select this option if you want Linux/MIPS 32-bit binary
2024 compatibility. Since all software available for Linux/MIPS is
2025 currently 32-bit you should say Y here.
2029 depends on MIPS32_COMPAT
2032 config SYSVIPC_COMPAT
2034 depends on COMPAT && SYSVIPC
2038 bool "Kernel support for o32 binaries"
2039 depends on MIPS32_COMPAT
2041 Select this option if you want to run o32 binaries. These are pure
2042 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2043 existing binaries are in this format.
2048 bool "Kernel support for n32 binaries"
2049 depends on MIPS32_COMPAT
2051 Select this option if you want to run n32 binaries. These are
2052 64-bit binaries using 32-bit quantities for addressing and certain
2053 data that would normally be 64-bit. They are used in special
2060 default y if MIPS32_O32 || MIPS32_N32
2064 menu "Power management options"
2066 config ARCH_SUSPEND_POSSIBLE
2070 source "kernel/power/Kconfig"
2074 source "net/Kconfig"
2076 source "drivers/Kconfig"
2080 source "arch/mips/Kconfig.debug"
2082 source "security/Kconfig"
2084 source "crypto/Kconfig"
2086 source "lib/Kconfig"