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
76 select SYS_HAS_CPU_NEVADA
77 select SYS_HAS_EARLY_PRINTK
78 select SYS_SUPPORTS_32BIT_KERNEL
79 select SYS_SUPPORTS_64BIT_KERNEL
80 select SYS_SUPPORTS_LITTLE_ENDIAN
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
136 This a family of machines based on the MIPS R4030 chipset which was
137 used by several vendors to build RISC/os and Windows NT workstations.
138 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
139 Olivetti M700-10 workstations.
142 bool "LASAT Networks platforms"
145 select DMA_NONCOHERENT
146 select SYS_HAS_EARLY_PRINTK
149 select PCI_GT64XXX_PCI0
151 select R5000_CPU_SCACHE
152 select SYS_HAS_CPU_R5000
153 select SYS_SUPPORTS_32BIT_KERNEL
154 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
155 select SYS_SUPPORTS_LITTLE_ENDIAN
158 bool "Lemote Fulong mini-PC"
159 select ARCH_SPARSEMEM_ENABLE
162 select SYS_HAS_CPU_LOONGSON2
163 select DMA_NONCOHERENT
166 select HAVE_STD_PC_SERIAL_PORT
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_64BIT_KERNEL
173 select SYS_SUPPORTS_LITTLE_ENDIAN
174 select SYS_SUPPORTS_HIGHMEM
175 select SYS_HAS_EARLY_PRINTK
176 select GENERIC_ISA_DMA_SUPPORT_BROKEN
179 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
183 bool "MIPS Malta board"
184 select ARCH_MAY_HAVE_PC_FDC
189 select DMA_NONCOHERENT
190 select GENERIC_ISA_DMA
196 select MIPS_BOARDS_GEN
198 select MIPS_CPU_SCACHE
199 select PCI_GT64XXX_PCI0
202 select SYS_HAS_CPU_MIPS32_R1
203 select SYS_HAS_CPU_MIPS32_R2
204 select SYS_HAS_CPU_MIPS64_R1
205 select SYS_HAS_CPU_NEVADA
206 select SYS_HAS_CPU_RM7000
207 select SYS_HAS_EARLY_PRINTK
208 select SYS_SUPPORTS_32BIT_KERNEL
209 select SYS_SUPPORTS_64BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_SUPPORTS_LITTLE_ENDIAN
212 select SYS_SUPPORTS_MIPS_CMP if BROKEN # because SYNC_R4K is broken
213 select SYS_SUPPORTS_MULTITHREADING
214 select SYS_SUPPORTS_SMARTMIPS
216 This enables support for the MIPS Technologies Malta evaluation
220 bool 'MIPS simulator (MIPSsim)'
223 select DMA_NONCOHERENT
224 select SYS_HAS_EARLY_PRINTK
227 select SYS_HAS_CPU_MIPS32_R1
228 select SYS_HAS_CPU_MIPS32_R2
229 select SYS_HAS_EARLY_PRINTK
230 select SYS_SUPPORTS_32BIT_KERNEL
231 select SYS_SUPPORTS_BIG_ENDIAN
232 select SYS_SUPPORTS_MULTITHREADING
233 select SYS_SUPPORTS_LITTLE_ENDIAN
235 This option enables support for MIPS Technologies MIPSsim software
239 bool "NEC EMMA2RH Mark-eins board"
243 This enables support for the NEC Electronics Mark-eins boards.
246 bool "NEC VR4100 series based machines"
249 select SYS_HAS_CPU_VR41XX
252 bool "NXP STB220 board"
255 Support for NXP Semiconductors STB220 Development Board.
262 Support for NXP Semiconductors STB225 Development Board.
265 bool "NXP PNX8550 based JBS board"
267 select SYS_SUPPORTS_LITTLE_ENDIAN
269 config PNX8550_STB810
270 bool "NXP PNX8550 based STB810 board"
272 select SYS_SUPPORTS_LITTLE_ENDIAN
275 bool "PMC-Sierra MSP chipsets"
276 depends on EXPERIMENTAL
277 select DMA_NONCOHERENT
279 select NO_EXCEPT_FILL
281 select SYS_HAS_CPU_MIPS32_R1
282 select SYS_HAS_CPU_MIPS32_R2
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_BIG_ENDIAN
287 select SERIAL_8250_CONSOLE
289 This adds support for the PMC-Sierra family of Multi-Service
290 Processor System-On-A-Chips. These parts include a number
291 of integrated peripherals, interfaces and DSPs in addition to
292 a variety of MIPS cores.
295 bool "PMC-Sierra Yosemite eval board"
304 select SYS_HAS_CPU_RM9000
305 select SYS_HAS_EARLY_PRINTK
306 select SYS_SUPPORTS_32BIT_KERNEL
307 select SYS_SUPPORTS_64BIT_KERNEL
308 select SYS_SUPPORTS_BIG_ENDIAN
309 select SYS_SUPPORTS_HIGHMEM
310 select SYS_SUPPORTS_SMP
312 Yosemite is an evaluation board for the RM9000x2 processor
313 manufactured by PMC-Sierra.
316 bool "SGI IP22 (Indy/Indigo2)"
322 select DEFAULT_SGI_PARTITION
323 select DMA_NONCOHERENT
327 select IP22_CPU_SCACHE
329 select GENERIC_ISA_DMA_SUPPORT_BROKEN
331 select SGI_HAS_INDYDOG
337 select SYS_HAS_CPU_R4X00
338 select SYS_HAS_CPU_R5000
339 select SYS_HAS_EARLY_PRINTK
340 select SYS_SUPPORTS_32BIT_KERNEL
341 select SYS_SUPPORTS_64BIT_KERNEL
342 select SYS_SUPPORTS_BIG_ENDIAN
344 This are the SGI Indy, Challenge S and Indigo2, as well as certain
345 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
346 that runs on these, say Y here.
349 bool "SGI IP27 (Origin200/2000)"
353 select DEFAULT_SGI_PARTITION
355 select SYS_HAS_EARLY_PRINTK
357 select NR_CPUS_DEFAULT_64
358 select SYS_HAS_CPU_R10000
359 select SYS_SUPPORTS_64BIT_KERNEL
360 select SYS_SUPPORTS_BIG_ENDIAN
361 select SYS_SUPPORTS_NUMA
362 select SYS_SUPPORTS_SMP
364 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
365 workstations. To compile a Linux kernel that runs on these, say Y
369 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
370 depends on EXPERIMENTAL
376 select DEFAULT_SGI_PARTITION
377 select DMA_NONCOHERENT
378 select GENERIC_ISA_DMA_SUPPORT_BROKEN
384 select SGI_HAS_INDYDOG
390 select SYS_HAS_CPU_R10000
391 select SYS_HAS_EARLY_PRINTK
392 select SYS_SUPPORTS_64BIT_KERNEL
393 select SYS_SUPPORTS_BIG_ENDIAN
395 This is the SGI Indigo2 with R10000 processor. To compile a Linux
396 kernel that runs on these, say Y here.
405 select DMA_NONCOHERENT
408 select R5000_CPU_SCACHE
409 select RM7000_CPU_SCACHE
410 select SYS_HAS_CPU_R5000
411 select SYS_HAS_CPU_R10000 if BROKEN
412 select SYS_HAS_CPU_RM7000
413 select SYS_HAS_CPU_NEVADA
414 select SYS_SUPPORTS_64BIT_KERNEL
415 select SYS_SUPPORTS_BIG_ENDIAN
417 If you want this kernel to run on SGI O2 workstation, say Y here.
420 bool "Sibyte BCM91120C-CRhine"
421 depends on EXPERIMENTAL
424 select SIBYTE_BCM1120
426 select SYS_HAS_CPU_SB1
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_LITTLE_ENDIAN
431 bool "Sibyte BCM91120x-Carmel"
432 depends on EXPERIMENTAL
435 select SIBYTE_BCM1120
437 select SYS_HAS_CPU_SB1
438 select SYS_SUPPORTS_BIG_ENDIAN
439 select SYS_SUPPORTS_LITTLE_ENDIAN
442 bool "Sibyte BCM91125C-CRhone"
443 depends on EXPERIMENTAL
446 select SIBYTE_BCM1125
448 select SYS_HAS_CPU_SB1
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_HIGHMEM
451 select SYS_SUPPORTS_LITTLE_ENDIAN
454 bool "Sibyte BCM91125E-Rhone"
455 depends on EXPERIMENTAL
458 select SIBYTE_BCM1125H
460 select SYS_HAS_CPU_SB1
461 select SYS_SUPPORTS_BIG_ENDIAN
462 select SYS_SUPPORTS_LITTLE_ENDIAN
465 bool "Sibyte BCM91250A-SWARM"
468 select NR_CPUS_DEFAULT_2
471 select SYS_HAS_CPU_SB1
472 select SYS_SUPPORTS_BIG_ENDIAN
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_LITTLE_ENDIAN
475 select ZONE_DMA32 if 64BIT
477 config SIBYTE_LITTLESUR
478 bool "Sibyte BCM91250C2-LittleSur"
479 depends on EXPERIMENTAL
482 select NR_CPUS_DEFAULT_2
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_HIGHMEM
488 select SYS_SUPPORTS_LITTLE_ENDIAN
490 config SIBYTE_SENTOSA
491 bool "Sibyte BCM91250E-Sentosa"
492 depends on EXPERIMENTAL
495 select NR_CPUS_DEFAULT_2
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
503 bool "Sibyte BCM91480B-BigSur"
506 select NR_CPUS_DEFAULT_4
507 select SIBYTE_BCM1x80
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_HIGHMEM
512 select SYS_SUPPORTS_LITTLE_ENDIAN
513 select ZONE_DMA32 if 64BIT
516 bool "SNI RM200/300/400"
517 select ARC if CPU_LITTLE_ENDIAN
518 select ARC32 if CPU_LITTLE_ENDIAN
519 select SNIPROM if CPU_BIG_ENDIAN
520 select ARCH_MAY_HAVE_PC_FDC
524 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
525 select DMA_NONCOHERENT
526 select GENERIC_ISA_DMA
533 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
534 select SYS_HAS_CPU_R4X00
535 select SYS_HAS_CPU_R5000
536 select SYS_HAS_CPU_R10000
537 select R5000_CPU_SCACHE
538 select SYS_HAS_EARLY_PRINTK
539 select SYS_SUPPORTS_32BIT_KERNEL
540 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select SYS_SUPPORTS_HIGHMEM
543 select SYS_SUPPORTS_LITTLE_ENDIAN
545 The SNI RM200/300/400 are MIPS-based machines manufactured by
546 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
547 Technology and now in turn merged with Fujitsu. Say Y here to
548 support this machine type.
551 bool "Toshiba TX39 series based machines"
554 bool "Toshiba TX49 series based machines"
556 config MIKROTIK_RB532
557 bool "Mikrotik RB532 boards"
560 select DMA_NONCOHERENT
563 select SYS_HAS_CPU_MIPS32_R1
564 select SYS_SUPPORTS_32BIT_KERNEL
565 select SYS_SUPPORTS_LITTLE_ENDIAN
568 select ARCH_REQUIRE_GPIOLIB
570 Support the Mikrotik(tm) RouterBoard 532 series,
571 based on the IDT RC32434 SoC.
574 bool "Wind River PPMC board"
579 select DMA_NONCOHERENT
581 select PCI_GT64XXX_PCI0
583 select SYS_HAS_CPU_MIPS32_R1
584 select SYS_HAS_CPU_MIPS32_R2
585 select SYS_HAS_CPU_MIPS64_R1
586 select SYS_HAS_CPU_NEVADA
587 select SYS_HAS_CPU_RM7000
588 select SYS_SUPPORTS_32BIT_KERNEL
589 select SYS_SUPPORTS_64BIT_KERNEL
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_LITTLE_ENDIAN
593 This enables support for the Wind River MIPS32 4KC PPMC evaluation
594 board, which is based on GT64120 bridge chip.
596 config CAVIUM_OCTEON_SIMULATOR
597 bool "Cavium Networks Octeon Simulator"
599 select 64BIT_PHYS_ADDR
601 select SYS_SUPPORTS_64BIT_KERNEL
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_HIGHMEM
604 select SYS_HAS_CPU_CAVIUM_OCTEON
606 The Octeon simulator is software performance model of the Cavium
607 Octeon Processor. It supports simulating Octeon processors on x86
610 config CAVIUM_OCTEON_REFERENCE_BOARD
611 bool "Cavium Networks Octeon reference board"
613 select 64BIT_PHYS_ADDR
615 select SYS_SUPPORTS_64BIT_KERNEL
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_HIGHMEM
618 select SYS_HAS_EARLY_PRINTK
619 select SYS_HAS_CPU_CAVIUM_OCTEON
622 select ARCH_SUPPORTS_MSI
624 This option supports all of the Octeon reference boards from Cavium
625 Networks. It builds a kernel that dynamically determines the Octeon
626 CPU type and supports all known board reference implementations.
627 Some of the supported boards are:
634 Say Y here for most Octeon reference boards.
638 source "arch/mips/alchemy/Kconfig"
639 source "arch/mips/basler/excite/Kconfig"
640 source "arch/mips/jazz/Kconfig"
641 source "arch/mips/lasat/Kconfig"
642 source "arch/mips/pmc-sierra/Kconfig"
643 source "arch/mips/sgi-ip27/Kconfig"
644 source "arch/mips/sibyte/Kconfig"
645 source "arch/mips/txx9/Kconfig"
646 source "arch/mips/vr41xx/Kconfig"
647 source "arch/mips/cavium-octeon/Kconfig"
651 config RWSEM_GENERIC_SPINLOCK
655 config RWSEM_XCHGADD_ALGORITHM
658 config ARCH_HAS_ILOG2_U32
662 config ARCH_HAS_ILOG2_U64
666 config ARCH_SUPPORTS_OPROFILE
668 default y if !MIPS_MT_SMTC
670 config GENERIC_FIND_NEXT_BIT
674 config GENERIC_HWEIGHT
678 config GENERIC_CALIBRATE_DELAY
682 config GENERIC_CLOCKEVENTS
690 config GENERIC_CMOS_UPDATE
694 config SCHED_OMIT_FRAME_POINTER
698 config GENERIC_HARDIRQS_NO__DO_IRQ
702 # Select some configuration options automatically based on user selections.
707 config ARCH_MAY_HAVE_PC_FDC
753 select ARCH_REQUIRE_GPIOLIB
762 config DMA_NONCOHERENT
764 select DMA_NEED_PCI_MAP_STATE
766 config DMA_NEED_PCI_MAP_STATE
770 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
771 depends on SYS_HAS_EARLY_PRINTK
774 This option enables special console drivers which allow the kernel
775 to print messages very early in the bootup process.
777 This is useful for kernel debugging when your machine crashes very
778 early before the console code is initialized. For normal operation,
779 it is not recommended because it looks ugly on some machines and
780 doesn't cooperate with an X server. You should normally say N here,
781 unless you want to debug such a crash.
783 config SYS_HAS_EARLY_PRINTK
802 config MIPS_DISABLE_OBSOLETE_IDE
811 config GENERIC_ISA_DMA
813 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
815 config GENERIC_ISA_DMA_SUPPORT_BROKEN
817 select GENERIC_ISA_DMA
823 # Endianess selection. Sufficiently obscure so many users don't know what to
824 # answer,so we try hard to limit the available choices. Also the use of a
825 # choice statement should be more obvious to the user.
828 prompt "Endianess selection"
830 Some MIPS machines can be configured for either little or big endian
831 byte order. These modes require different kernels and a different
832 Linux distribution. In general there is one preferred byteorder for a
833 particular system but some systems are just as commonly used in the
834 one or the other endianness.
836 config CPU_BIG_ENDIAN
838 depends on SYS_SUPPORTS_BIG_ENDIAN
840 config CPU_LITTLE_ENDIAN
842 depends on SYS_SUPPORTS_LITTLE_ENDIAN
847 config SYS_SUPPORTS_APM_EMULATION
850 config SYS_SUPPORTS_BIG_ENDIAN
853 config SYS_SUPPORTS_LITTLE_ENDIAN
856 config SYS_SUPPORTS_HUGETLBFS
858 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
885 config IRQ_CPU_OCTEON
888 config MIPS_BOARDS_GEN
891 config PCI_GT64XXX_PCI0
894 config NO_EXCEPT_FILL
905 select DMA_NONCOHERENT
908 select SYS_HAS_CPU_R5500
909 select SYS_SUPPORTS_32BIT_KERNEL
910 select SYS_SUPPORTS_64BIT_KERNEL
911 select SYS_SUPPORTS_BIG_ENDIAN
918 select DMA_NONCOHERENT
919 select SYS_HAS_CPU_MIPS32_R2
920 select SYS_SUPPORTS_32BIT_KERNEL
921 select SYS_SUPPORTS_LITTLE_ENDIAN
922 select SYS_SUPPORTS_BIG_ENDIAN
924 select CPU_MIPSR2_IRQ_VI
936 select DMA_NONCOHERENT
938 select SYS_HAS_CPU_MIPS32_R1
939 select SYS_HAS_EARLY_PRINTK
940 select SYS_SUPPORTS_32BIT_KERNEL
949 config SGI_HAS_INDYDOG
967 config DEFAULT_SGI_PARTITION
979 config MIPS_L1_CACHE_SHIFT
981 default "4" if MACH_DECSTATION || MIKROTIK_RB532
982 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
983 default "4" if PMC_MSP4200_EVAL
986 config HAVE_STD_PC_SERIAL_PORT
990 bool "ARC console support"
991 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
995 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1000 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1009 menu "CPU selection"
1015 config CPU_LOONGSON2
1017 depends on SYS_HAS_CPU_LOONGSON2
1018 select CPU_SUPPORTS_32BIT_KERNEL
1019 select CPU_SUPPORTS_64BIT_KERNEL
1020 select CPU_SUPPORTS_HIGHMEM
1022 The Loongson 2E processor implements the MIPS III instruction set
1023 with many extensions.
1025 config CPU_MIPS32_R1
1026 bool "MIPS32 Release 1"
1027 depends on SYS_HAS_CPU_MIPS32_R1
1029 select CPU_HAS_PREFETCH
1030 select CPU_SUPPORTS_32BIT_KERNEL
1031 select CPU_SUPPORTS_HIGHMEM
1033 Choose this option to build a kernel for release 1 or later of the
1034 MIPS32 architecture. Most modern embedded systems with a 32-bit
1035 MIPS processor are based on a MIPS32 processor. If you know the
1036 specific type of processor in your system, choose those that one
1037 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1038 Release 2 of the MIPS32 architecture is available since several
1039 years so chances are you even have a MIPS32 Release 2 processor
1040 in which case you should choose CPU_MIPS32_R2 instead for better
1043 config CPU_MIPS32_R2
1044 bool "MIPS32 Release 2"
1045 depends on SYS_HAS_CPU_MIPS32_R2
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 2 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.
1057 config CPU_MIPS64_R1
1058 bool "MIPS64 Release 1"
1059 depends on SYS_HAS_CPU_MIPS64_R1
1061 select CPU_HAS_PREFETCH
1062 select CPU_SUPPORTS_32BIT_KERNEL
1063 select CPU_SUPPORTS_64BIT_KERNEL
1064 select CPU_SUPPORTS_HIGHMEM
1065 select CPU_SUPPORTS_HUGEPAGES
1067 Choose this option to build a kernel for release 1 or later of the
1068 MIPS64 architecture. Many modern embedded systems with a 64-bit
1069 MIPS processor are based on a MIPS64 processor. If you know the
1070 specific type of processor in your system, choose those that one
1071 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1072 Release 2 of the MIPS64 architecture is available since several
1073 years so chances are you even have a MIPS64 Release 2 processor
1074 in which case you should choose CPU_MIPS64_R2 instead for better
1077 config CPU_MIPS64_R2
1078 bool "MIPS64 Release 2"
1079 depends on SYS_HAS_CPU_MIPS64_R2
1081 select CPU_HAS_PREFETCH
1082 select CPU_SUPPORTS_32BIT_KERNEL
1083 select CPU_SUPPORTS_64BIT_KERNEL
1084 select CPU_SUPPORTS_HIGHMEM
1085 select CPU_SUPPORTS_HUGEPAGES
1087 Choose this option to build a kernel for release 2 or later of the
1088 MIPS64 architecture. Many modern embedded systems with a 64-bit
1089 MIPS processor are based on a MIPS64 processor. If you know the
1090 specific type of processor in your system, choose those that one
1091 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1095 depends on SYS_HAS_CPU_R3000
1097 select CPU_SUPPORTS_32BIT_KERNEL
1098 select CPU_SUPPORTS_HIGHMEM
1100 Please make sure to pick the right CPU type. Linux/MIPS is not
1101 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1102 *not* work on R4000 machines and vice versa. However, since most
1103 of the supported machines have an R4000 (or similar) CPU, R4x00
1104 might be a safe bet. If the resulting kernel does not work,
1105 try to recompile with R3000.
1109 depends on SYS_HAS_CPU_TX39XX
1110 select CPU_SUPPORTS_32BIT_KERNEL
1114 depends on SYS_HAS_CPU_VR41XX
1115 select CPU_SUPPORTS_32BIT_KERNEL
1116 select CPU_SUPPORTS_64BIT_KERNEL
1118 The options selects support for the NEC VR4100 series of processors.
1119 Only choose this option if you have one of these processors as a
1120 kernel built with this option will not run on any other type of
1121 processor or vice versa.
1125 depends on SYS_HAS_CPU_R4300
1127 select CPU_SUPPORTS_32BIT_KERNEL
1128 select CPU_SUPPORTS_64BIT_KERNEL
1130 MIPS Technologies R4300-series processors.
1134 depends on SYS_HAS_CPU_R4X00
1136 select CPU_SUPPORTS_32BIT_KERNEL
1137 select CPU_SUPPORTS_64BIT_KERNEL
1139 MIPS Technologies R4000-series processors other than 4300, including
1140 the R4000, R4400, R4600, and 4700.
1144 depends on SYS_HAS_CPU_TX49XX
1146 select CPU_HAS_PREFETCH
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1152 depends on SYS_HAS_CPU_R5000
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_64BIT_KERNEL
1157 MIPS Technologies R5000-series processors other than the Nevada.
1161 depends on SYS_HAS_CPU_R5432
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1168 depends on SYS_HAS_CPU_R5500
1170 select CPU_SUPPORTS_32BIT_KERNEL
1171 select CPU_SUPPORTS_64BIT_KERNEL
1172 select CPU_SUPPORTS_HUGEPAGES
1174 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
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
1246 config CPU_CAVIUM_OCTEON
1247 bool "Cavium Octeon processor"
1248 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1250 select IRQ_CPU_OCTEON
1251 select CPU_HAS_PREFETCH
1252 select CPU_SUPPORTS_64BIT_KERNEL
1253 select SYS_SUPPORTS_SMP
1254 select NR_CPUS_DEFAULT_16
1255 select WEAK_ORDERING
1256 select WEAK_REORDERING_BEYOND_LLSC
1257 select CPU_SUPPORTS_HIGHMEM
1258 select CPU_SUPPORTS_HUGEPAGES
1260 The Cavium Octeon processor is a highly integrated chip containing
1261 many ethernet hardware widgets for networking tasks. The processor
1262 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1263 Full details can be found at http://www.caviumnetworks.com.
1267 config SYS_HAS_CPU_LOONGSON2
1270 config SYS_HAS_CPU_MIPS32_R1
1273 config SYS_HAS_CPU_MIPS32_R2
1276 config SYS_HAS_CPU_MIPS64_R1
1279 config SYS_HAS_CPU_MIPS64_R2
1282 config SYS_HAS_CPU_R3000
1285 config SYS_HAS_CPU_TX39XX
1288 config SYS_HAS_CPU_VR41XX
1291 config SYS_HAS_CPU_R4300
1294 config SYS_HAS_CPU_R4X00
1297 config SYS_HAS_CPU_TX49XX
1300 config SYS_HAS_CPU_R5000
1303 config SYS_HAS_CPU_R5432
1306 config SYS_HAS_CPU_R5500
1309 config SYS_HAS_CPU_R6000
1312 config SYS_HAS_CPU_NEVADA
1315 config SYS_HAS_CPU_R8000
1318 config SYS_HAS_CPU_R10000
1321 config SYS_HAS_CPU_RM7000
1324 config SYS_HAS_CPU_RM9000
1327 config SYS_HAS_CPU_SB1
1330 config SYS_HAS_CPU_CAVIUM_OCTEON
1334 # CPU may reorder R->R, R->W, W->R, W->W
1335 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1337 config WEAK_ORDERING
1341 # CPU may reorder reads and writes beyond LL/SC
1342 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1344 config WEAK_REORDERING_BEYOND_LLSC
1349 # These two indicate any level of the MIPS32 and MIPS64 architecture
1353 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1357 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1360 # These two indicate the revision of the architecture, either Release 1 or Release 2
1364 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1368 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1370 config SYS_SUPPORTS_32BIT_KERNEL
1372 config SYS_SUPPORTS_64BIT_KERNEL
1374 config CPU_SUPPORTS_32BIT_KERNEL
1376 config CPU_SUPPORTS_64BIT_KERNEL
1378 config CPU_SUPPORTS_HUGEPAGES
1382 # Set to y for ptrace access to watch registers.
1384 config HARDWARE_WATCHPOINTS
1386 default y if CPU_MIPSR1 || CPU_MIPSR2
1392 prompt "Kernel code model"
1394 You should only select this option if you have a workload that
1395 actually benefits from 64-bit processing or if your machine has
1396 large memory. You will only be presented a single option in this
1397 menu if your system does not support both 32-bit and 64-bit kernels.
1400 bool "32-bit kernel"
1401 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1404 Select this option if you want to build a 32-bit kernel.
1406 bool "64-bit kernel"
1407 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1408 select HAVE_SYSCALL_WRAPPERS
1410 Select this option if you want to build a 64-bit kernel.
1415 prompt "Kernel page size"
1416 default PAGE_SIZE_4KB
1418 config PAGE_SIZE_4KB
1421 This option select the standard 4kB Linux page size. On some
1422 R3000-family processors this is the only available page size. Using
1423 4kB page size will minimize memory consumption and is therefore
1424 recommended for low memory systems.
1426 config PAGE_SIZE_8KB
1428 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1430 Using 8kB page size will result in higher performance kernel at
1431 the price of higher memory consumption. This option is available
1432 only on R8000 and cnMIPS processors. Note that you will need a
1433 suitable Linux distribution to support this.
1435 config PAGE_SIZE_16KB
1437 depends on !CPU_R3000 && !CPU_TX39XX
1439 Using 16kB page size will result in higher performance kernel at
1440 the price of higher memory consumption. This option is available on
1441 all non-R3000 family processors. Note that you will need a suitable
1442 Linux distribution to support this.
1444 config PAGE_SIZE_32KB
1446 depends on CPU_CAVIUM_OCTEON
1448 Using 32kB page size will result in higher performance kernel at
1449 the price of higher memory consumption. This option is available
1450 only on cnMIPS cores. Note that you will need a suitable Linux
1451 distribution to support this.
1453 config PAGE_SIZE_64KB
1455 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1457 Using 64kB page size will result in higher performance kernel at
1458 the price of higher memory consumption. This option is available on
1459 all non-R3000 family processor. Not that at the time of this
1460 writing this option is still high experimental.
1467 config IP22_CPU_SCACHE
1472 # Support for a MIPS32 / MIPS64 style S-caches
1474 config MIPS_CPU_SCACHE
1478 config R5000_CPU_SCACHE
1482 config RM7000_CPU_SCACHE
1486 config SIBYTE_DMA_PAGEOPS
1487 bool "Use DMA to clear/copy pages"
1490 Instead of using the CPU to zero and copy pages, use a Data Mover
1491 channel. These DMA channels are otherwise unused by the standard
1492 SiByte Linux port. Seems to give a small performance benefit.
1494 config CPU_HAS_PREFETCH
1498 prompt "MIPS MT options"
1500 config MIPS_MT_DISABLED
1501 bool "Disable multithreading support."
1503 Use this option if your workload can't take advantage of
1504 MIPS hardware multithreading support. On systems that don't have
1505 the option of an MT-enabled processor this option will be the only
1506 option in this menu.
1509 bool "Use 1 TC on each available VPE for SMP"
1510 depends on SYS_SUPPORTS_MULTITHREADING
1511 select CPU_MIPSR2_IRQ_VI
1512 select CPU_MIPSR2_IRQ_EI
1514 select NR_CPUS_DEFAULT_2
1516 select SYS_SUPPORTS_SCHED_SMT if SMP
1517 select SYS_SUPPORTS_SMP
1520 This is a kernel model which is also known a VSMP or lately
1521 has been marketesed into SMVP.
1524 bool "SMTC: Use all TCs on all VPEs for SMP"
1525 depends on CPU_MIPS32_R2
1526 #depends on CPU_MIPS64_R2 # once there is hardware ...
1527 depends on SYS_SUPPORTS_MULTITHREADING
1528 select CPU_MIPSR2_IRQ_VI
1529 select CPU_MIPSR2_IRQ_EI
1531 select NR_CPUS_DEFAULT_8
1533 select SYS_SUPPORTS_SMP
1536 This is a kernel model which is known a SMTC or lately has been
1537 marketesed into SMVP.
1545 bool "SMT (multithreading) scheduler support"
1546 depends on SYS_SUPPORTS_SCHED_SMT
1549 SMT scheduler support improves the CPU scheduler's decision making
1550 when dealing with MIPS MT enabled cores at a cost of slightly
1551 increased overhead in some places. If unsure say N here.
1553 config SYS_SUPPORTS_SCHED_SMT
1557 config SYS_SUPPORTS_MULTITHREADING
1560 config MIPS_MT_FPAFF
1561 bool "Dynamic FPU affinity for FP-intensive threads"
1563 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1565 config MIPS_VPE_LOADER
1566 bool "VPE loader support."
1567 depends on SYS_SUPPORTS_MULTITHREADING
1568 select CPU_MIPSR2_IRQ_VI
1569 select CPU_MIPSR2_IRQ_EI
1572 Includes a loader for loading an elf relocatable object
1573 onto another VPE and running it.
1575 config MIPS_MT_SMTC_IM_BACKSTOP
1576 bool "Use per-TC register bits as backstop for inhibited IM bits"
1577 depends on MIPS_MT_SMTC
1580 To support multiple TC microthreads acting as "CPUs" within
1581 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1582 during interrupt handling. To support legacy drivers and interrupt
1583 controller management code, SMTC has a "backstop" to track and
1584 if necessary restore the interrupt mask. This has some performance
1585 impact on interrupt service overhead.
1587 config MIPS_MT_SMTC_IRQAFF
1588 bool "Support IRQ affinity API"
1589 depends on MIPS_MT_SMTC
1592 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1593 for SMTC Linux kernel. Requires platform support, of which
1594 an example can be found in the MIPS kernel i8259 and Malta
1595 platform code. Adds some overhead to interrupt dispatch, and
1596 should be used only if you know what you are doing.
1598 config MIPS_VPE_LOADER_TOM
1599 bool "Load VPE program into memory hidden from linux"
1600 depends on MIPS_VPE_LOADER
1603 The loader can use memory that is present but has been hidden from
1604 Linux using the kernel command line option "mem=xxMB". It's up to
1605 you to ensure the amount you put in the option and the space your
1606 program requires is less or equal to the amount physically present.
1608 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1609 config MIPS_VPE_APSP_API
1610 bool "Enable support for AP/SP API (RTLX)"
1611 depends on MIPS_VPE_LOADER
1614 config MIPS_APSP_KSPD
1616 depends on MIPS_VPE_APSP_API
1619 KSPD is a kernel daemon that accepts syscall requests from the SP
1620 side, actions them and returns the results. It also handles the
1621 "exit" syscall notifying other kernel modules the SP program is
1622 exiting. You probably want to say yes here.
1625 bool "MIPS CMP framework support"
1626 depends on SYS_SUPPORTS_MIPS_CMP
1627 select SYNC_R4K if BROKEN
1628 select SYS_SUPPORTS_SMP
1629 select SYS_SUPPORTS_SCHED_SMT if SMP
1630 select WEAK_ORDERING
1633 This is a placeholder option for the GCMP work. It will need to
1634 be handled differently...
1636 config SB1_PASS_1_WORKAROUNDS
1638 depends on CPU_SB1_PASS_1
1641 config SB1_PASS_2_WORKAROUNDS
1643 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1646 config SB1_PASS_2_1_WORKAROUNDS
1648 depends on CPU_SB1 && CPU_SB1_PASS_2
1651 config 64BIT_PHYS_ADDR
1657 config CPU_HAS_SMARTMIPS
1658 depends on SYS_SUPPORTS_SMARTMIPS
1659 bool "Support for the SmartMIPS ASE"
1661 SmartMIPS is a extension of the MIPS32 architecture aimed at
1662 increased security at both hardware and software level for
1663 smartcards. Enabling this option will allow proper use of the
1664 SmartMIPS instructions by Linux applications. However a kernel with
1665 this option will not work on a MIPS core without SmartMIPS core. If
1666 you don't know you probably don't have SmartMIPS and should say N
1673 # Vectored interrupt mode is an R2 feature
1675 config CPU_MIPSR2_IRQ_VI
1679 # Extended interrupt mode is an R2 feature
1681 config CPU_MIPSR2_IRQ_EI
1686 depends on !CPU_R3000
1689 config GENERIC_CLOCKEVENTS_BROADCAST
1695 config CPU_DADDI_WORKAROUNDS
1698 config CPU_R4000_WORKAROUNDS
1700 select CPU_R4400_WORKAROUNDS
1702 config CPU_R4400_WORKAROUNDS
1706 # Use the generic interrupt handling code in kernel/irq/:
1708 config GENERIC_HARDIRQS
1712 config GENERIC_IRQ_PROBE
1720 # - Highmem only makes sense for the 32-bit kernel.
1721 # - The current highmem code will only work properly on physically indexed
1722 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1723 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1724 # moment we protect the user and offer the highmem option only on machines
1725 # where it's known to be safe. This will not offer highmem on a few systems
1726 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1727 # indexed CPUs but we're playing safe.
1728 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1729 # know they might have memory configurations that could make use of highmem
1733 bool "High Memory Support"
1734 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1736 config CPU_SUPPORTS_HIGHMEM
1739 config SYS_SUPPORTS_HIGHMEM
1742 config SYS_SUPPORTS_SMARTMIPS
1745 config ARCH_FLATMEM_ENABLE
1749 config ARCH_DISCONTIGMEM_ENABLE
1751 default y if SGI_IP27
1753 Say Y to support efficient handling of discontiguous physical memory,
1754 for architectures which are either NUMA (Non-Uniform Memory Access)
1755 or have huge holes in the physical address space for other reasons.
1756 See <file:Documentation/vm/numa> for more.
1758 config ARCH_POPULATES_NODE_MAP
1761 config ARCH_SPARSEMEM_ENABLE
1763 select SPARSEMEM_STATIC
1767 depends on SYS_SUPPORTS_NUMA
1769 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1770 Access). This option improves performance on systems with more
1771 than two nodes; on two node systems it is generally better to
1772 leave it disabled; on single node systems disable this option
1775 config SYS_SUPPORTS_NUMA
1781 depends on NEED_MULTIPLE_NODES
1786 bool "Multi-Processing support"
1787 depends on SYS_SUPPORTS_SMP
1789 select USE_GENERIC_SMP_HELPERS
1791 This enables support for systems with more than one CPU. If you have
1792 a system with only one CPU, like most personal computers, say N. If
1793 you have a system with more than one CPU, say Y.
1795 If you say N here, the kernel will run on single and multiprocessor
1796 machines, but will use only one CPU of a multiprocessor machine. If
1797 you say Y here, the kernel will run on many, but not all,
1798 singleprocessor machines. On a singleprocessor machine, the kernel
1799 will run faster if you say N here.
1801 People using multiprocessor machines who say Y here should also say
1802 Y to "Enhanced Real Time Clock Support", below.
1804 See also the SMP-HOWTO available at
1805 <http://www.tldp.org/docs.html#howto>.
1807 If you don't know what to do here, say N.
1812 config SYS_SUPPORTS_MIPS_CMP
1815 config SYS_SUPPORTS_SMP
1818 config NR_CPUS_DEFAULT_1
1821 config NR_CPUS_DEFAULT_2
1824 config NR_CPUS_DEFAULT_4
1827 config NR_CPUS_DEFAULT_8
1830 config NR_CPUS_DEFAULT_16
1833 config NR_CPUS_DEFAULT_32
1836 config NR_CPUS_DEFAULT_64
1840 int "Maximum number of CPUs (2-64)"
1841 range 1 64 if NR_CPUS_DEFAULT_1
1843 default "1" if NR_CPUS_DEFAULT_1
1844 default "2" if NR_CPUS_DEFAULT_2
1845 default "4" if NR_CPUS_DEFAULT_4
1846 default "8" if NR_CPUS_DEFAULT_8
1847 default "16" if NR_CPUS_DEFAULT_16
1848 default "32" if NR_CPUS_DEFAULT_32
1849 default "64" if NR_CPUS_DEFAULT_64
1851 This allows you to specify the maximum number of CPUs which this
1852 kernel will support. The maximum supported value is 32 for 32-bit
1853 kernel and 64 for 64-bit kernels; the minimum value which makes
1854 sense is 1 for Qemu (useful only for kernel debugging purposes)
1855 and 2 for all others.
1857 This is purely to save memory - each supported CPU adds
1858 approximately eight kilobytes to the kernel image. For best
1859 performance should round up your number of processors to the next
1862 source "kernel/time/Kconfig"
1865 # Timer Interrupt Frequency Configuration
1869 prompt "Timer frequency"
1872 Allows the configuration of the timer frequency.
1875 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1878 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1881 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1884 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1887 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1890 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1893 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1897 config SYS_SUPPORTS_48HZ
1900 config SYS_SUPPORTS_100HZ
1903 config SYS_SUPPORTS_128HZ
1906 config SYS_SUPPORTS_250HZ
1909 config SYS_SUPPORTS_256HZ
1912 config SYS_SUPPORTS_1000HZ
1915 config SYS_SUPPORTS_1024HZ
1918 config SYS_SUPPORTS_ARBIT_HZ
1920 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1921 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1922 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1923 !SYS_SUPPORTS_1024HZ
1928 default 100 if HZ_100
1929 default 128 if HZ_128
1930 default 250 if HZ_250
1931 default 256 if HZ_256
1932 default 1000 if HZ_1000
1933 default 1024 if HZ_1024
1935 source "kernel/Kconfig.preempt"
1937 config MIPS_INSANE_LARGE
1938 bool "Support for large 64-bit configurations"
1939 depends on CPU_R10000 && 64BIT
1941 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1942 previous 64-bit processors which only supported 40 bit / 1TB. If you
1943 need processes of more than 1TB virtual address space, say Y here.
1944 This will result in additional memory usage, so it is not
1945 recommended for normal users.
1948 bool "Kexec system call (EXPERIMENTAL)"
1949 depends on EXPERIMENTAL
1951 kexec is a system call that implements the ability to shutdown your
1952 current kernel, and to start another kernel. It is like a reboot
1953 but it is independent of the system firmware. And like a reboot
1954 you can start any kernel with it, not just Linux.
1956 The name comes from the similarity to the exec system call.
1958 It is an ongoing process to be certain the hardware in a machine
1959 is properly shutdown, so do not be surprised if this code does not
1960 initially work for you. It may help to enable device hotplugging
1961 support. As of this writing the exact hardware interface is
1962 strongly in flux, so no good recommendation can be made.
1965 bool "Enable seccomp to safely compute untrusted bytecode"
1969 This kernel feature is useful for number crunching applications
1970 that may need to compute untrusted bytecode during their
1971 execution. By using pipes or other transports made available to
1972 the process as file descriptors supporting the read/write
1973 syscalls, it's possible to isolate those applications in
1974 their own address space using seccomp. Once seccomp is
1975 enabled via /proc/<pid>/seccomp, it cannot be disabled
1976 and the task is only allowed to execute a few safe syscalls
1977 defined by each seccomp mode.
1979 If unsure, say Y. Only embedded should say N here.
1983 config LOCKDEP_SUPPORT
1987 config STACKTRACE_SUPPORT
1991 source "init/Kconfig"
1993 config PROBE_INITRD_HEADER
1994 bool "Probe initrd header created by addinitrd"
1995 depends on BLK_DEV_INITRD
1997 Probe initrd header at the last page of kernel image.
1998 Say Y here if you are using arch/mips/boot/addinitrd.c to
1999 add initrd or initramfs image to the kernel image.
2002 source "kernel/Kconfig.freezer"
2004 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2012 bool "Support for PCI controller"
2013 depends on HW_HAS_PCI
2016 Find out whether you have a PCI motherboard. PCI is the name of a
2017 bus system, i.e. the way the CPU talks to the other stuff inside
2018 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2024 source "drivers/pci/Kconfig"
2027 # ISA support is now enabled via select. Too many systems still have the one
2028 # or other ISA chip on the board that users don't know about so don't expect
2029 # users to choose the right thing ...
2036 depends on HW_HAS_EISA
2038 select GENERIC_ISA_DMA
2040 The Extended Industry Standard Architecture (EISA) bus was
2041 developed as an open alternative to the IBM MicroChannel bus.
2043 The EISA bus provided some of the features of the IBM MicroChannel
2044 bus while maintaining backward compatibility with cards made for
2045 the older ISA bus. The EISA bus saw limited use between 1988 and
2046 1995 when it was made obsolete by the PCI bus.
2048 Say Y here if you are building a kernel for an EISA-based machine.
2052 source "drivers/eisa/Kconfig"
2055 bool "TURBOchannel support"
2056 depends on MACH_DECSTATION
2058 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2059 processors. Documentation on writing device drivers for TurboChannel
2061 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2064 # bool "Access.Bus support"
2077 source "drivers/pcmcia/Kconfig"
2079 source "drivers/pci/hotplug/Kconfig"
2083 menu "Executable file formats"
2085 source "fs/Kconfig.binfmt"
2090 config MIPS32_COMPAT
2091 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2094 Select this option if you want Linux/MIPS 32-bit binary
2095 compatibility. Since all software available for Linux/MIPS is
2096 currently 32-bit you should say Y here.
2100 depends on MIPS32_COMPAT
2103 config SYSVIPC_COMPAT
2105 depends on COMPAT && SYSVIPC
2109 bool "Kernel support for o32 binaries"
2110 depends on MIPS32_COMPAT
2112 Select this option if you want to run o32 binaries. These are pure
2113 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2114 existing binaries are in this format.
2119 bool "Kernel support for n32 binaries"
2120 depends on MIPS32_COMPAT
2122 Select this option if you want to run n32 binaries. These are
2123 64-bit binaries using 32-bit quantities for addressing and certain
2124 data that would normally be 64-bit. They are used in special
2131 default y if MIPS32_O32 || MIPS32_N32
2135 menu "Power management options"
2137 config ARCH_HIBERNATION_POSSIBLE
2141 config ARCH_SUSPEND_POSSIBLE
2145 source "kernel/power/Kconfig"
2149 source "net/Kconfig"
2151 source "drivers/Kconfig"
2155 source "arch/mips/Kconfig.debug"
2157 source "security/Kconfig"
2159 source "crypto/Kconfig"
2161 source "lib/Kconfig"