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 "Texas Instruments AR7"
28 select DMA_NONCOHERENT
34 select SYS_HAS_CPU_MIPS32_R1
35 select SYS_HAS_EARLY_PRINTK
36 select SYS_SUPPORTS_32BIT_KERNEL
37 select SYS_SUPPORTS_LITTLE_ENDIAN
42 Support for the Texas Instruments AR7 System-on-a-Chip
43 family: TNETD7100, 7200 and 7300.
46 bool "Basler eXcite smart camera"
55 select SYS_HAS_CPU_RM9000
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_BIG_ENDIAN
59 The eXcite is a smart camera platform manufactured by
60 Basler Vision Technologies AG.
63 bool "BCM47XX based boards"
66 select DMA_NONCOHERENT
69 select SYS_HAS_CPU_MIPS32_R1
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_LITTLE_ENDIAN
73 select SSB_DRIVER_MIPS
74 select SSB_DRIVER_EXTIF
76 select SSB_PCICORE_HOSTMODE if PCI
78 select SYS_HAS_EARLY_PRINTK
81 Support for BCM47XX based boards
88 select DMA_NONCOHERENT
94 select PCI_GT64XXX_PCI0
96 select SYS_HAS_CPU_NEVADA
97 select SYS_HAS_EARLY_PRINTK
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_64BIT_KERNEL
100 select SYS_SUPPORTS_LITTLE_ENDIAN
102 config MACH_DECSTATION
109 select CPU_DADDI_WORKAROUNDS if 64BIT
110 select CPU_R4000_WORKAROUNDS if 64BIT
111 select CPU_R4400_WORKAROUNDS if 64BIT
112 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_R3000
116 select SYS_HAS_CPU_R4X00
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
119 select SYS_SUPPORTS_LITTLE_ENDIAN
120 select SYS_SUPPORTS_128HZ
121 select SYS_SUPPORTS_256HZ
122 select SYS_SUPPORTS_1024HZ
124 This enables support for DEC's MIPS based workstations. For details
125 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
126 DECstation porting pages on <http://decstation.unix-ag.org/>.
128 If you have one of the following DECstation Models you definitely
129 want to choose R4xx0 for the CPU Type:
136 otherwise choose R3000.
139 bool "Jazz family of machines"
142 select ARCH_MAY_HAVE_PC_FDC
145 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
146 select GENERIC_ISA_DMA
151 select SYS_HAS_CPU_R4X00
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
154 select SYS_SUPPORTS_100HZ
156 This a family of machines based on the MIPS R4030 chipset which was
157 used by several vendors to build RISC/os and Windows NT workstations.
158 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
159 Olivetti M700-10 workstations.
162 bool "LASAT Networks platforms"
165 select DMA_NONCOHERENT
166 select SYS_HAS_EARLY_PRINTK
169 select PCI_GT64XXX_PCI0
171 select R5000_CPU_SCACHE
172 select SYS_HAS_CPU_R5000
173 select SYS_SUPPORTS_32BIT_KERNEL
174 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
175 select SYS_SUPPORTS_LITTLE_ENDIAN
178 bool "Lemote Fulong mini-PC"
179 select ARCH_SPARSEMEM_ENABLE
182 select SYS_HAS_CPU_LOONGSON2
183 select DMA_NONCOHERENT
186 select HAVE_STD_PC_SERIAL_PORT
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_SUPPORTS_64BIT_KERNEL
193 select SYS_SUPPORTS_LITTLE_ENDIAN
194 select SYS_SUPPORTS_HIGHMEM
195 select SYS_HAS_EARLY_PRINTK
196 select GENERIC_ISA_DMA_SUPPORT_BROKEN
199 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
203 bool "MIPS Malta board"
204 select ARCH_MAY_HAVE_PC_FDC
209 select DMA_NONCOHERENT
210 select GENERIC_ISA_DMA
216 select MIPS_BOARDS_GEN
218 select MIPS_CPU_SCACHE
219 select PCI_GT64XXX_PCI0
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_HAS_CPU_MIPS64_R1
225 select SYS_HAS_CPU_NEVADA
226 select SYS_HAS_CPU_RM7000
227 select SYS_HAS_EARLY_PRINTK
228 select SYS_SUPPORTS_32BIT_KERNEL
229 select SYS_SUPPORTS_64BIT_KERNEL
230 select SYS_SUPPORTS_BIG_ENDIAN
231 select SYS_SUPPORTS_LITTLE_ENDIAN
232 select SYS_SUPPORTS_MIPS_CMP
233 select SYS_SUPPORTS_MULTITHREADING
234 select SYS_SUPPORTS_SMARTMIPS
236 This enables support for the MIPS Technologies Malta evaluation
240 bool 'MIPS simulator (MIPSsim)'
243 select DMA_NONCOHERENT
244 select SYS_HAS_EARLY_PRINTK
247 select SYS_HAS_CPU_MIPS32_R1
248 select SYS_HAS_CPU_MIPS32_R2
249 select SYS_HAS_EARLY_PRINTK
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_BIG_ENDIAN
252 select SYS_SUPPORTS_MULTITHREADING
253 select SYS_SUPPORTS_LITTLE_ENDIAN
255 This option enables support for MIPS Technologies MIPSsim software
259 bool "NEC EMMA2RH Mark-eins board"
263 This enables support for the NEC Electronics Mark-eins boards.
266 bool "NEC VR4100 series based machines"
269 select SYS_HAS_CPU_VR41XX
270 select ARCH_REQUIRE_GPIOLIB
273 bool "NXP STB220 board"
276 Support for NXP Semiconductors STB220 Development Board.
283 Support for NXP Semiconductors STB225 Development Board.
286 bool "NXP PNX8550 based JBS board"
288 select SYS_SUPPORTS_LITTLE_ENDIAN
290 config PNX8550_STB810
291 bool "NXP PNX8550 based STB810 board"
293 select SYS_SUPPORTS_LITTLE_ENDIAN
296 bool "PMC-Sierra MSP chipsets"
297 depends on EXPERIMENTAL
298 select DMA_NONCOHERENT
300 select NO_EXCEPT_FILL
302 select SYS_HAS_CPU_MIPS32_R1
303 select SYS_HAS_CPU_MIPS32_R2
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_BIG_ENDIAN
308 select SERIAL_8250_CONSOLE
310 This adds support for the PMC-Sierra family of Multi-Service
311 Processor System-On-A-Chips. These parts include a number
312 of integrated peripherals, interfaces and DSPs in addition to
313 a variety of MIPS cores.
316 bool "PMC-Sierra Yosemite eval board"
325 select SYS_HAS_CPU_RM9000
326 select SYS_HAS_EARLY_PRINTK
327 select SYS_SUPPORTS_32BIT_KERNEL
328 select SYS_SUPPORTS_64BIT_KERNEL
329 select SYS_SUPPORTS_BIG_ENDIAN
330 select SYS_SUPPORTS_HIGHMEM
331 select SYS_SUPPORTS_SMP
333 Yosemite is an evaluation board for the RM9000x2 processor
334 manufactured by PMC-Sierra.
337 bool "SGI IP22 (Indy/Indigo2)"
343 select DEFAULT_SGI_PARTITION
344 select DMA_NONCOHERENT
348 select IP22_CPU_SCACHE
350 select GENERIC_ISA_DMA_SUPPORT_BROKEN
352 select SGI_HAS_INDYDOG
358 select SYS_HAS_CPU_R4X00
359 select SYS_HAS_CPU_R5000
360 select SYS_HAS_EARLY_PRINTK
361 select SYS_SUPPORTS_32BIT_KERNEL
362 select SYS_SUPPORTS_64BIT_KERNEL
363 select SYS_SUPPORTS_BIG_ENDIAN
365 This are the SGI Indy, Challenge S and Indigo2, as well as certain
366 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
367 that runs on these, say Y here.
370 bool "SGI IP27 (Origin200/2000)"
374 select DEFAULT_SGI_PARTITION
376 select SYS_HAS_EARLY_PRINTK
378 select NR_CPUS_DEFAULT_64
379 select SYS_HAS_CPU_R10000
380 select SYS_SUPPORTS_64BIT_KERNEL
381 select SYS_SUPPORTS_BIG_ENDIAN
382 select SYS_SUPPORTS_NUMA
383 select SYS_SUPPORTS_SMP
385 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
386 workstations. To compile a Linux kernel that runs on these, say Y
390 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
391 depends on EXPERIMENTAL
397 select DEFAULT_SGI_PARTITION
398 select DMA_NONCOHERENT
399 select GENERIC_ISA_DMA_SUPPORT_BROKEN
405 select SGI_HAS_INDYDOG
411 select SYS_HAS_CPU_R10000
412 select SYS_HAS_EARLY_PRINTK
413 select SYS_SUPPORTS_64BIT_KERNEL
414 select SYS_SUPPORTS_BIG_ENDIAN
416 This is the SGI Indigo2 with R10000 processor. To compile a Linux
417 kernel that runs on these, say Y here.
426 select DMA_NONCOHERENT
429 select R5000_CPU_SCACHE
430 select RM7000_CPU_SCACHE
431 select SYS_HAS_CPU_R5000
432 select SYS_HAS_CPU_R10000 if BROKEN
433 select SYS_HAS_CPU_RM7000
434 select SYS_HAS_CPU_NEVADA
435 select SYS_SUPPORTS_64BIT_KERNEL
436 select SYS_SUPPORTS_BIG_ENDIAN
438 If you want this kernel to run on SGI O2 workstation, say Y here.
441 bool "Sibyte BCM91120C-CRhine"
442 depends on EXPERIMENTAL
445 select SIBYTE_BCM1120
447 select SYS_HAS_CPU_SB1
448 select SYS_SUPPORTS_BIG_ENDIAN
449 select SYS_SUPPORTS_LITTLE_ENDIAN
452 bool "Sibyte BCM91120x-Carmel"
453 depends on EXPERIMENTAL
456 select SIBYTE_BCM1120
458 select SYS_HAS_CPU_SB1
459 select SYS_SUPPORTS_BIG_ENDIAN
460 select SYS_SUPPORTS_LITTLE_ENDIAN
463 bool "Sibyte BCM91125C-CRhone"
464 depends on EXPERIMENTAL
467 select SIBYTE_BCM1125
469 select SYS_HAS_CPU_SB1
470 select SYS_SUPPORTS_BIG_ENDIAN
471 select SYS_SUPPORTS_HIGHMEM
472 select SYS_SUPPORTS_LITTLE_ENDIAN
475 bool "Sibyte BCM91125E-Rhone"
476 depends on EXPERIMENTAL
479 select SIBYTE_BCM1125H
481 select SYS_HAS_CPU_SB1
482 select SYS_SUPPORTS_BIG_ENDIAN
483 select SYS_SUPPORTS_LITTLE_ENDIAN
486 bool "Sibyte BCM91250A-SWARM"
489 select NR_CPUS_DEFAULT_2
492 select SYS_HAS_CPU_SB1
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_HIGHMEM
495 select SYS_SUPPORTS_LITTLE_ENDIAN
496 select ZONE_DMA32 if 64BIT
498 config SIBYTE_LITTLESUR
499 bool "Sibyte BCM91250C2-LittleSur"
500 depends on EXPERIMENTAL
503 select NR_CPUS_DEFAULT_2
506 select SYS_HAS_CPU_SB1
507 select SYS_SUPPORTS_BIG_ENDIAN
508 select SYS_SUPPORTS_HIGHMEM
509 select SYS_SUPPORTS_LITTLE_ENDIAN
511 config SIBYTE_SENTOSA
512 bool "Sibyte BCM91250E-Sentosa"
513 depends on EXPERIMENTAL
516 select NR_CPUS_DEFAULT_2
519 select SYS_HAS_CPU_SB1
520 select SYS_SUPPORTS_BIG_ENDIAN
521 select SYS_SUPPORTS_LITTLE_ENDIAN
524 bool "Sibyte BCM91480B-BigSur"
527 select NR_CPUS_DEFAULT_4
528 select SIBYTE_BCM1x80
530 select SYS_HAS_CPU_SB1
531 select SYS_SUPPORTS_BIG_ENDIAN
532 select SYS_SUPPORTS_HIGHMEM
533 select SYS_SUPPORTS_LITTLE_ENDIAN
534 select ZONE_DMA32 if 64BIT
537 bool "SNI RM200/300/400"
538 select ARC if CPU_LITTLE_ENDIAN
539 select ARC32 if CPU_LITTLE_ENDIAN
540 select SNIPROM if CPU_BIG_ENDIAN
541 select ARCH_MAY_HAVE_PC_FDC
545 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
546 select DMA_NONCOHERENT
547 select GENERIC_ISA_DMA
554 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
555 select SYS_HAS_CPU_R4X00
556 select SYS_HAS_CPU_R5000
557 select SYS_HAS_CPU_R10000
558 select R5000_CPU_SCACHE
559 select SYS_HAS_EARLY_PRINTK
560 select SYS_SUPPORTS_32BIT_KERNEL
561 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_HIGHMEM
564 select SYS_SUPPORTS_LITTLE_ENDIAN
566 The SNI RM200/300/400 are MIPS-based machines manufactured by
567 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
568 Technology and now in turn merged with Fujitsu. Say Y here to
569 support this machine type.
572 bool "Toshiba TX39 series based machines"
575 bool "Toshiba TX49 series based machines"
577 config MIKROTIK_RB532
578 bool "Mikrotik RB532 boards"
581 select DMA_NONCOHERENT
584 select SYS_HAS_CPU_MIPS32_R1
585 select SYS_SUPPORTS_32BIT_KERNEL
586 select SYS_SUPPORTS_LITTLE_ENDIAN
589 select ARCH_REQUIRE_GPIOLIB
591 Support the Mikrotik(tm) RouterBoard 532 series,
592 based on the IDT RC32434 SoC.
595 bool "Wind River PPMC board"
600 select DMA_NONCOHERENT
602 select PCI_GT64XXX_PCI0
604 select SYS_HAS_CPU_MIPS32_R1
605 select SYS_HAS_CPU_MIPS32_R2
606 select SYS_HAS_CPU_MIPS64_R1
607 select SYS_HAS_CPU_NEVADA
608 select SYS_HAS_CPU_RM7000
609 select SYS_SUPPORTS_32BIT_KERNEL
610 select SYS_SUPPORTS_64BIT_KERNEL
611 select SYS_SUPPORTS_BIG_ENDIAN
612 select SYS_SUPPORTS_LITTLE_ENDIAN
614 This enables support for the Wind River MIPS32 4KC PPMC evaluation
615 board, which is based on GT64120 bridge chip.
617 config CAVIUM_OCTEON_SIMULATOR
618 bool "Cavium Networks Octeon Simulator"
620 select 64BIT_PHYS_ADDR
622 select SYS_SUPPORTS_64BIT_KERNEL
623 select SYS_SUPPORTS_BIG_ENDIAN
624 select SYS_SUPPORTS_HIGHMEM
625 select SYS_SUPPORTS_HOTPLUG_CPU
626 select SYS_HAS_CPU_CAVIUM_OCTEON
628 The Octeon simulator is software performance model of the Cavium
629 Octeon Processor. It supports simulating Octeon processors on x86
632 config CAVIUM_OCTEON_REFERENCE_BOARD
633 bool "Cavium Networks Octeon reference board"
635 select 64BIT_PHYS_ADDR
637 select SYS_SUPPORTS_64BIT_KERNEL
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_HIGHMEM
640 select SYS_SUPPORTS_HOTPLUG_CPU
641 select SYS_HAS_EARLY_PRINTK
642 select SYS_HAS_CPU_CAVIUM_OCTEON
645 select ARCH_SUPPORTS_MSI
647 This option supports all of the Octeon reference boards from Cavium
648 Networks. It builds a kernel that dynamically determines the Octeon
649 CPU type and supports all known board reference implementations.
650 Some of the supported boards are:
657 Say Y here for most Octeon reference boards.
661 source "arch/mips/alchemy/Kconfig"
662 source "arch/mips/basler/excite/Kconfig"
663 source "arch/mips/jazz/Kconfig"
664 source "arch/mips/lasat/Kconfig"
665 source "arch/mips/pmc-sierra/Kconfig"
666 source "arch/mips/sgi-ip27/Kconfig"
667 source "arch/mips/sibyte/Kconfig"
668 source "arch/mips/txx9/Kconfig"
669 source "arch/mips/vr41xx/Kconfig"
670 source "arch/mips/cavium-octeon/Kconfig"
674 config RWSEM_GENERIC_SPINLOCK
678 config RWSEM_XCHGADD_ALGORITHM
681 config ARCH_HAS_ILOG2_U32
685 config ARCH_HAS_ILOG2_U64
689 config ARCH_SUPPORTS_OPROFILE
691 default y if !MIPS_MT_SMTC
693 config GENERIC_FIND_NEXT_BIT
697 config GENERIC_HWEIGHT
701 config GENERIC_CALIBRATE_DELAY
705 config GENERIC_CLOCKEVENTS
713 config GENERIC_CMOS_UPDATE
717 config SCHED_OMIT_FRAME_POINTER
721 config GENERIC_HARDIRQS_NO__DO_IRQ
725 # Select some configuration options automatically based on user selections.
730 config ARCH_MAY_HAVE_PC_FDC
776 select ARCH_REQUIRE_GPIOLIB
785 config DMA_NONCOHERENT
787 select DMA_NEED_PCI_MAP_STATE
789 config DMA_NEED_PCI_MAP_STATE
793 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
794 depends on SYS_HAS_EARLY_PRINTK
797 This option enables special console drivers which allow the kernel
798 to print messages very early in the bootup process.
800 This is useful for kernel debugging when your machine crashes very
801 early before the console code is initialized. For normal operation,
802 it is not recommended because it looks ugly on some machines and
803 doesn't cooperate with an X server. You should normally say N here,
804 unless you want to debug such a crash.
806 config SYS_HAS_EARLY_PRINTK
810 bool "Support for hot-pluggable CPUs"
811 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
813 Say Y here to allow turning CPUs off and on. CPUs can be
814 controlled through /sys/devices/system/cpu.
815 (Note: power management support will enable this option
816 automatically on SMP systems. )
817 Say N if you want to disable CPU hotplug.
819 config SYS_SUPPORTS_HOTPLUG_CPU
834 config MIPS_DISABLE_OBSOLETE_IDE
843 config GENERIC_ISA_DMA
845 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
847 config GENERIC_ISA_DMA_SUPPORT_BROKEN
849 select GENERIC_ISA_DMA
855 # Endianess selection. Sufficiently obscure so many users don't know what to
856 # answer,so we try hard to limit the available choices. Also the use of a
857 # choice statement should be more obvious to the user.
860 prompt "Endianess selection"
862 Some MIPS machines can be configured for either little or big endian
863 byte order. These modes require different kernels and a different
864 Linux distribution. In general there is one preferred byteorder for a
865 particular system but some systems are just as commonly used in the
866 one or the other endianness.
868 config CPU_BIG_ENDIAN
870 depends on SYS_SUPPORTS_BIG_ENDIAN
872 config CPU_LITTLE_ENDIAN
874 depends on SYS_SUPPORTS_LITTLE_ENDIAN
879 config SYS_SUPPORTS_APM_EMULATION
882 config SYS_SUPPORTS_BIG_ENDIAN
885 config SYS_SUPPORTS_LITTLE_ENDIAN
888 config SYS_SUPPORTS_HUGETLBFS
890 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
917 config IRQ_CPU_OCTEON
920 config MIPS_BOARDS_GEN
923 config PCI_GT64XXX_PCI0
926 config NO_EXCEPT_FILL
937 select DMA_NONCOHERENT
940 select SYS_HAS_CPU_R5500
941 select SYS_SUPPORTS_32BIT_KERNEL
942 select SYS_SUPPORTS_64BIT_KERNEL
943 select SYS_SUPPORTS_BIG_ENDIAN
950 select DMA_NONCOHERENT
951 select SYS_HAS_CPU_MIPS32_R2
952 select SYS_SUPPORTS_32BIT_KERNEL
953 select SYS_SUPPORTS_LITTLE_ENDIAN
954 select SYS_SUPPORTS_BIG_ENDIAN
956 select CPU_MIPSR2_IRQ_VI
968 select DMA_NONCOHERENT
970 select SYS_HAS_CPU_MIPS32_R1
971 select SYS_HAS_EARLY_PRINTK
972 select SYS_SUPPORTS_32BIT_KERNEL
981 config SGI_HAS_INDYDOG
999 config DEFAULT_SGI_PARTITION
1011 config MIPS_L1_CACHE_SHIFT
1013 default "4" if MACH_DECSTATION || MIKROTIK_RB532
1014 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1015 default "4" if PMC_MSP4200_EVAL
1018 config HAVE_STD_PC_SERIAL_PORT
1022 bool "ARC console support"
1023 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1027 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1032 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1041 menu "CPU selection"
1047 config CPU_LOONGSON2
1049 depends on SYS_HAS_CPU_LOONGSON2
1050 select CPU_SUPPORTS_32BIT_KERNEL
1051 select CPU_SUPPORTS_64BIT_KERNEL
1052 select CPU_SUPPORTS_HIGHMEM
1054 The Loongson 2E processor implements the MIPS III instruction set
1055 with many extensions.
1057 config CPU_MIPS32_R1
1058 bool "MIPS32 Release 1"
1059 depends on SYS_HAS_CPU_MIPS32_R1
1061 select CPU_HAS_PREFETCH
1062 select CPU_SUPPORTS_32BIT_KERNEL
1063 select CPU_SUPPORTS_HIGHMEM
1065 Choose this option to build a kernel for release 1 or later of the
1066 MIPS32 architecture. Most modern embedded systems with a 32-bit
1067 MIPS processor are based on a MIPS32 processor. If you know the
1068 specific type of processor in your system, choose those that one
1069 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1070 Release 2 of the MIPS32 architecture is available since several
1071 years so chances are you even have a MIPS32 Release 2 processor
1072 in which case you should choose CPU_MIPS32_R2 instead for better
1075 config CPU_MIPS32_R2
1076 bool "MIPS32 Release 2"
1077 depends on SYS_HAS_CPU_MIPS32_R2
1079 select CPU_HAS_PREFETCH
1080 select CPU_SUPPORTS_32BIT_KERNEL
1081 select CPU_SUPPORTS_HIGHMEM
1083 Choose this option to build a kernel for release 2 or later of the
1084 MIPS32 architecture. Most modern embedded systems with a 32-bit
1085 MIPS processor are based on a MIPS32 processor. If you know the
1086 specific type of processor in your system, choose those that one
1087 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1089 config CPU_MIPS64_R1
1090 bool "MIPS64 Release 1"
1091 depends on SYS_HAS_CPU_MIPS64_R1
1093 select CPU_HAS_PREFETCH
1094 select CPU_SUPPORTS_32BIT_KERNEL
1095 select CPU_SUPPORTS_64BIT_KERNEL
1096 select CPU_SUPPORTS_HIGHMEM
1097 select CPU_SUPPORTS_HUGEPAGES
1099 Choose this option to build a kernel for release 1 or later of the
1100 MIPS64 architecture. Many modern embedded systems with a 64-bit
1101 MIPS processor are based on a MIPS64 processor. If you know the
1102 specific type of processor in your system, choose those that one
1103 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1104 Release 2 of the MIPS64 architecture is available since several
1105 years so chances are you even have a MIPS64 Release 2 processor
1106 in which case you should choose CPU_MIPS64_R2 instead for better
1109 config CPU_MIPS64_R2
1110 bool "MIPS64 Release 2"
1111 depends on SYS_HAS_CPU_MIPS64_R2
1113 select CPU_HAS_PREFETCH
1114 select CPU_SUPPORTS_32BIT_KERNEL
1115 select CPU_SUPPORTS_64BIT_KERNEL
1116 select CPU_SUPPORTS_HIGHMEM
1117 select CPU_SUPPORTS_HUGEPAGES
1119 Choose this option to build a kernel for release 2 or later of the
1120 MIPS64 architecture. Many modern embedded systems with a 64-bit
1121 MIPS processor are based on a MIPS64 processor. If you know the
1122 specific type of processor in your system, choose those that one
1123 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1127 depends on SYS_HAS_CPU_R3000
1129 select CPU_SUPPORTS_32BIT_KERNEL
1130 select CPU_SUPPORTS_HIGHMEM
1132 Please make sure to pick the right CPU type. Linux/MIPS is not
1133 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1134 *not* work on R4000 machines and vice versa. However, since most
1135 of the supported machines have an R4000 (or similar) CPU, R4x00
1136 might be a safe bet. If the resulting kernel does not work,
1137 try to recompile with R3000.
1141 depends on SYS_HAS_CPU_TX39XX
1142 select CPU_SUPPORTS_32BIT_KERNEL
1146 depends on SYS_HAS_CPU_VR41XX
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1150 The options selects support for the NEC VR4100 series of processors.
1151 Only choose this option if you have one of these processors as a
1152 kernel built with this option will not run on any other type of
1153 processor or vice versa.
1157 depends on SYS_HAS_CPU_R4300
1159 select CPU_SUPPORTS_32BIT_KERNEL
1160 select CPU_SUPPORTS_64BIT_KERNEL
1162 MIPS Technologies R4300-series processors.
1166 depends on SYS_HAS_CPU_R4X00
1168 select CPU_SUPPORTS_32BIT_KERNEL
1169 select CPU_SUPPORTS_64BIT_KERNEL
1171 MIPS Technologies R4000-series processors other than 4300, including
1172 the R4000, R4400, R4600, and 4700.
1176 depends on SYS_HAS_CPU_TX49XX
1178 select CPU_HAS_PREFETCH
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_64BIT_KERNEL
1184 depends on SYS_HAS_CPU_R5000
1186 select CPU_SUPPORTS_32BIT_KERNEL
1187 select CPU_SUPPORTS_64BIT_KERNEL
1189 MIPS Technologies R5000-series processors other than the Nevada.
1193 depends on SYS_HAS_CPU_R5432
1195 select CPU_SUPPORTS_32BIT_KERNEL
1196 select CPU_SUPPORTS_64BIT_KERNEL
1200 depends on SYS_HAS_CPU_R5500
1202 select CPU_SUPPORTS_32BIT_KERNEL
1203 select CPU_SUPPORTS_64BIT_KERNEL
1204 select CPU_SUPPORTS_HUGEPAGES
1206 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1211 depends on EXPERIMENTAL
1213 depends on SYS_HAS_CPU_R6000
1214 select CPU_SUPPORTS_32BIT_KERNEL
1216 MIPS Technologies R6000 and R6000A series processors. Note these
1217 processors are extremely rare and the support for them is incomplete.
1221 depends on SYS_HAS_CPU_NEVADA
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_64BIT_KERNEL
1226 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1230 depends on EXPERIMENTAL
1231 depends on SYS_HAS_CPU_R8000
1233 select CPU_HAS_PREFETCH
1234 select CPU_SUPPORTS_64BIT_KERNEL
1236 MIPS Technologies R8000 processors. Note these processors are
1237 uncommon and the support for them is incomplete.
1241 depends on SYS_HAS_CPU_R10000
1243 select CPU_HAS_PREFETCH
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1246 select CPU_SUPPORTS_HIGHMEM
1248 MIPS Technologies R10000-series processors.
1252 depends on SYS_HAS_CPU_RM7000
1254 select CPU_HAS_PREFETCH
1255 select CPU_SUPPORTS_32BIT_KERNEL
1256 select CPU_SUPPORTS_64BIT_KERNEL
1257 select CPU_SUPPORTS_HIGHMEM
1261 depends on SYS_HAS_CPU_RM9000
1263 select CPU_HAS_PREFETCH
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_64BIT_KERNEL
1266 select CPU_SUPPORTS_HIGHMEM
1267 select WEAK_ORDERING
1271 depends on SYS_HAS_CPU_SB1
1273 select CPU_SUPPORTS_32BIT_KERNEL
1274 select CPU_SUPPORTS_64BIT_KERNEL
1275 select CPU_SUPPORTS_HIGHMEM
1276 select WEAK_ORDERING
1278 config CPU_CAVIUM_OCTEON
1279 bool "Cavium Octeon processor"
1280 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1282 select IRQ_CPU_OCTEON
1283 select CPU_HAS_PREFETCH
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select SYS_SUPPORTS_SMP
1286 select NR_CPUS_DEFAULT_16
1287 select WEAK_ORDERING
1288 select WEAK_REORDERING_BEYOND_LLSC
1289 select CPU_SUPPORTS_HIGHMEM
1290 select CPU_SUPPORTS_HUGEPAGES
1292 The Cavium Octeon processor is a highly integrated chip containing
1293 many ethernet hardware widgets for networking tasks. The processor
1294 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1295 Full details can be found at http://www.caviumnetworks.com.
1299 config SYS_HAS_CPU_LOONGSON2
1302 config SYS_HAS_CPU_MIPS32_R1
1305 config SYS_HAS_CPU_MIPS32_R2
1308 config SYS_HAS_CPU_MIPS64_R1
1311 config SYS_HAS_CPU_MIPS64_R2
1314 config SYS_HAS_CPU_R3000
1317 config SYS_HAS_CPU_TX39XX
1320 config SYS_HAS_CPU_VR41XX
1323 config SYS_HAS_CPU_R4300
1326 config SYS_HAS_CPU_R4X00
1329 config SYS_HAS_CPU_TX49XX
1332 config SYS_HAS_CPU_R5000
1335 config SYS_HAS_CPU_R5432
1338 config SYS_HAS_CPU_R5500
1341 config SYS_HAS_CPU_R6000
1344 config SYS_HAS_CPU_NEVADA
1347 config SYS_HAS_CPU_R8000
1350 config SYS_HAS_CPU_R10000
1353 config SYS_HAS_CPU_RM7000
1356 config SYS_HAS_CPU_RM9000
1359 config SYS_HAS_CPU_SB1
1362 config SYS_HAS_CPU_CAVIUM_OCTEON
1366 # CPU may reorder R->R, R->W, W->R, W->W
1367 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1369 config WEAK_ORDERING
1373 # CPU may reorder reads and writes beyond LL/SC
1374 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1376 config WEAK_REORDERING_BEYOND_LLSC
1381 # These two indicate any level of the MIPS32 and MIPS64 architecture
1385 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1389 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1392 # These two indicate the revision of the architecture, either Release 1 or Release 2
1396 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1400 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1402 config SYS_SUPPORTS_32BIT_KERNEL
1404 config SYS_SUPPORTS_64BIT_KERNEL
1406 config CPU_SUPPORTS_32BIT_KERNEL
1408 config CPU_SUPPORTS_64BIT_KERNEL
1410 config CPU_SUPPORTS_HUGEPAGES
1414 # Set to y for ptrace access to watch registers.
1416 config HARDWARE_WATCHPOINTS
1418 default y if CPU_MIPSR1 || CPU_MIPSR2
1424 prompt "Kernel code model"
1426 You should only select this option if you have a workload that
1427 actually benefits from 64-bit processing or if your machine has
1428 large memory. You will only be presented a single option in this
1429 menu if your system does not support both 32-bit and 64-bit kernels.
1432 bool "32-bit kernel"
1433 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1436 Select this option if you want to build a 32-bit kernel.
1438 bool "64-bit kernel"
1439 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1440 select HAVE_SYSCALL_WRAPPERS
1442 Select this option if you want to build a 64-bit kernel.
1447 prompt "Kernel page size"
1448 default PAGE_SIZE_4KB
1450 config PAGE_SIZE_4KB
1453 This option select the standard 4kB Linux page size. On some
1454 R3000-family processors this is the only available page size. Using
1455 4kB page size will minimize memory consumption and is therefore
1456 recommended for low memory systems.
1458 config PAGE_SIZE_8KB
1460 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1462 Using 8kB page size will result in higher performance kernel at
1463 the price of higher memory consumption. This option is available
1464 only on R8000 and cnMIPS processors. Note that you will need a
1465 suitable Linux distribution to support this.
1467 config PAGE_SIZE_16KB
1469 depends on !CPU_R3000 && !CPU_TX39XX
1471 Using 16kB page size will result in higher performance kernel at
1472 the price of higher memory consumption. This option is available on
1473 all non-R3000 family processors. Note that you will need a suitable
1474 Linux distribution to support this.
1476 config PAGE_SIZE_32KB
1478 depends on CPU_CAVIUM_OCTEON
1480 Using 32kB page size will result in higher performance kernel at
1481 the price of higher memory consumption. This option is available
1482 only on cnMIPS cores. Note that you will need a suitable Linux
1483 distribution to support this.
1485 config PAGE_SIZE_64KB
1487 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1489 Using 64kB page size will result in higher performance kernel at
1490 the price of higher memory consumption. This option is available on
1491 all non-R3000 family processor. Not that at the time of this
1492 writing this option is still high experimental.
1499 config IP22_CPU_SCACHE
1504 # Support for a MIPS32 / MIPS64 style S-caches
1506 config MIPS_CPU_SCACHE
1510 config R5000_CPU_SCACHE
1514 config RM7000_CPU_SCACHE
1518 config SIBYTE_DMA_PAGEOPS
1519 bool "Use DMA to clear/copy pages"
1522 Instead of using the CPU to zero and copy pages, use a Data Mover
1523 channel. These DMA channels are otherwise unused by the standard
1524 SiByte Linux port. Seems to give a small performance benefit.
1526 config CPU_HAS_PREFETCH
1530 prompt "MIPS MT options"
1532 config MIPS_MT_DISABLED
1533 bool "Disable multithreading support."
1535 Use this option if your workload can't take advantage of
1536 MIPS hardware multithreading support. On systems that don't have
1537 the option of an MT-enabled processor this option will be the only
1538 option in this menu.
1541 bool "Use 1 TC on each available VPE for SMP"
1542 depends on SYS_SUPPORTS_MULTITHREADING
1543 select CPU_MIPSR2_IRQ_VI
1544 select CPU_MIPSR2_IRQ_EI
1546 select NR_CPUS_DEFAULT_2
1548 select SYS_SUPPORTS_SCHED_SMT if SMP
1549 select SYS_SUPPORTS_SMP
1552 This is a kernel model which is also known a VSMP or lately
1553 has been marketesed into SMVP.
1556 bool "SMTC: Use all TCs on all VPEs for SMP"
1557 depends on CPU_MIPS32_R2
1558 #depends on CPU_MIPS64_R2 # once there is hardware ...
1559 depends on SYS_SUPPORTS_MULTITHREADING
1560 select CPU_MIPSR2_IRQ_VI
1561 select CPU_MIPSR2_IRQ_EI
1563 select NR_CPUS_DEFAULT_8
1565 select SYS_SUPPORTS_SMP
1568 This is a kernel model which is known a SMTC or lately has been
1569 marketesed into SMVP.
1577 bool "SMT (multithreading) scheduler support"
1578 depends on SYS_SUPPORTS_SCHED_SMT
1581 SMT scheduler support improves the CPU scheduler's decision making
1582 when dealing with MIPS MT enabled cores at a cost of slightly
1583 increased overhead in some places. If unsure say N here.
1585 config SYS_SUPPORTS_SCHED_SMT
1589 config SYS_SUPPORTS_MULTITHREADING
1592 config MIPS_MT_FPAFF
1593 bool "Dynamic FPU affinity for FP-intensive threads"
1595 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1597 config MIPS_VPE_LOADER
1598 bool "VPE loader support."
1599 depends on SYS_SUPPORTS_MULTITHREADING
1600 select CPU_MIPSR2_IRQ_VI
1601 select CPU_MIPSR2_IRQ_EI
1604 Includes a loader for loading an elf relocatable object
1605 onto another VPE and running it.
1607 config MIPS_MT_SMTC_IM_BACKSTOP
1608 bool "Use per-TC register bits as backstop for inhibited IM bits"
1609 depends on MIPS_MT_SMTC
1612 To support multiple TC microthreads acting as "CPUs" within
1613 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1614 during interrupt handling. To support legacy drivers and interrupt
1615 controller management code, SMTC has a "backstop" to track and
1616 if necessary restore the interrupt mask. This has some performance
1617 impact on interrupt service overhead.
1619 config MIPS_MT_SMTC_IRQAFF
1620 bool "Support IRQ affinity API"
1621 depends on MIPS_MT_SMTC
1624 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1625 for SMTC Linux kernel. Requires platform support, of which
1626 an example can be found in the MIPS kernel i8259 and Malta
1627 platform code. Adds some overhead to interrupt dispatch, and
1628 should be used only if you know what you are doing.
1630 config MIPS_VPE_LOADER_TOM
1631 bool "Load VPE program into memory hidden from linux"
1632 depends on MIPS_VPE_LOADER
1635 The loader can use memory that is present but has been hidden from
1636 Linux using the kernel command line option "mem=xxMB". It's up to
1637 you to ensure the amount you put in the option and the space your
1638 program requires is less or equal to the amount physically present.
1640 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1641 config MIPS_VPE_APSP_API
1642 bool "Enable support for AP/SP API (RTLX)"
1643 depends on MIPS_VPE_LOADER
1646 config MIPS_APSP_KSPD
1648 depends on MIPS_VPE_APSP_API
1651 KSPD is a kernel daemon that accepts syscall requests from the SP
1652 side, actions them and returns the results. It also handles the
1653 "exit" syscall notifying other kernel modules the SP program is
1654 exiting. You probably want to say yes here.
1657 bool "MIPS CMP framework support"
1658 depends on SYS_SUPPORTS_MIPS_CMP
1660 select SYS_SUPPORTS_SMP
1661 select SYS_SUPPORTS_SCHED_SMT if SMP
1662 select WEAK_ORDERING
1665 This is a placeholder option for the GCMP work. It will need to
1666 be handled differently...
1668 config SB1_PASS_1_WORKAROUNDS
1670 depends on CPU_SB1_PASS_1
1673 config SB1_PASS_2_WORKAROUNDS
1675 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1678 config SB1_PASS_2_1_WORKAROUNDS
1680 depends on CPU_SB1 && CPU_SB1_PASS_2
1683 config 64BIT_PHYS_ADDR
1689 config CPU_HAS_SMARTMIPS
1690 depends on SYS_SUPPORTS_SMARTMIPS
1691 bool "Support for the SmartMIPS ASE"
1693 SmartMIPS is a extension of the MIPS32 architecture aimed at
1694 increased security at both hardware and software level for
1695 smartcards. Enabling this option will allow proper use of the
1696 SmartMIPS instructions by Linux applications. However a kernel with
1697 this option will not work on a MIPS core without SmartMIPS core. If
1698 you don't know you probably don't have SmartMIPS and should say N
1705 # Vectored interrupt mode is an R2 feature
1707 config CPU_MIPSR2_IRQ_VI
1711 # Extended interrupt mode is an R2 feature
1713 config CPU_MIPSR2_IRQ_EI
1718 depends on !CPU_R3000
1721 config GENERIC_CLOCKEVENTS_BROADCAST
1727 config CPU_DADDI_WORKAROUNDS
1730 config CPU_R4000_WORKAROUNDS
1732 select CPU_R4400_WORKAROUNDS
1734 config CPU_R4400_WORKAROUNDS
1738 # Use the generic interrupt handling code in kernel/irq/:
1740 config GENERIC_HARDIRQS
1744 config GENERIC_IRQ_PROBE
1752 # - Highmem only makes sense for the 32-bit kernel.
1753 # - The current highmem code will only work properly on physically indexed
1754 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1755 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1756 # moment we protect the user and offer the highmem option only on machines
1757 # where it's known to be safe. This will not offer highmem on a few systems
1758 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1759 # indexed CPUs but we're playing safe.
1760 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1761 # know they might have memory configurations that could make use of highmem
1765 bool "High Memory Support"
1766 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1768 config CPU_SUPPORTS_HIGHMEM
1771 config SYS_SUPPORTS_HIGHMEM
1774 config SYS_SUPPORTS_SMARTMIPS
1777 config ARCH_FLATMEM_ENABLE
1781 config ARCH_DISCONTIGMEM_ENABLE
1783 default y if SGI_IP27
1785 Say Y to support efficient handling of discontiguous physical memory,
1786 for architectures which are either NUMA (Non-Uniform Memory Access)
1787 or have huge holes in the physical address space for other reasons.
1788 See <file:Documentation/vm/numa> for more.
1790 config ARCH_POPULATES_NODE_MAP
1793 config ARCH_SPARSEMEM_ENABLE
1795 select SPARSEMEM_STATIC
1799 depends on SYS_SUPPORTS_NUMA
1801 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1802 Access). This option improves performance on systems with more
1803 than two nodes; on two node systems it is generally better to
1804 leave it disabled; on single node systems disable this option
1807 config SYS_SUPPORTS_NUMA
1813 depends on NEED_MULTIPLE_NODES
1818 bool "Multi-Processing support"
1819 depends on SYS_SUPPORTS_SMP
1821 select USE_GENERIC_SMP_HELPERS
1823 This enables support for systems with more than one CPU. If you have
1824 a system with only one CPU, like most personal computers, say N. If
1825 you have a system with more than one CPU, say Y.
1827 If you say N here, the kernel will run on single and multiprocessor
1828 machines, but will use only one CPU of a multiprocessor machine. If
1829 you say Y here, the kernel will run on many, but not all,
1830 singleprocessor machines. On a singleprocessor machine, the kernel
1831 will run faster if you say N here.
1833 People using multiprocessor machines who say Y here should also say
1834 Y to "Enhanced Real Time Clock Support", below.
1836 See also the SMP-HOWTO available at
1837 <http://www.tldp.org/docs.html#howto>.
1839 If you don't know what to do here, say N.
1844 config SYS_SUPPORTS_MIPS_CMP
1847 config SYS_SUPPORTS_SMP
1850 config NR_CPUS_DEFAULT_1
1853 config NR_CPUS_DEFAULT_2
1856 config NR_CPUS_DEFAULT_4
1859 config NR_CPUS_DEFAULT_8
1862 config NR_CPUS_DEFAULT_16
1865 config NR_CPUS_DEFAULT_32
1868 config NR_CPUS_DEFAULT_64
1872 int "Maximum number of CPUs (2-64)"
1873 range 1 64 if NR_CPUS_DEFAULT_1
1875 default "1" if NR_CPUS_DEFAULT_1
1876 default "2" if NR_CPUS_DEFAULT_2
1877 default "4" if NR_CPUS_DEFAULT_4
1878 default "8" if NR_CPUS_DEFAULT_8
1879 default "16" if NR_CPUS_DEFAULT_16
1880 default "32" if NR_CPUS_DEFAULT_32
1881 default "64" if NR_CPUS_DEFAULT_64
1883 This allows you to specify the maximum number of CPUs which this
1884 kernel will support. The maximum supported value is 32 for 32-bit
1885 kernel and 64 for 64-bit kernels; the minimum value which makes
1886 sense is 1 for Qemu (useful only for kernel debugging purposes)
1887 and 2 for all others.
1889 This is purely to save memory - each supported CPU adds
1890 approximately eight kilobytes to the kernel image. For best
1891 performance should round up your number of processors to the next
1894 source "kernel/time/Kconfig"
1897 # Timer Interrupt Frequency Configuration
1901 prompt "Timer frequency"
1904 Allows the configuration of the timer frequency.
1907 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1910 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1913 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1916 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1919 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1922 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1925 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1929 config SYS_SUPPORTS_48HZ
1932 config SYS_SUPPORTS_100HZ
1935 config SYS_SUPPORTS_128HZ
1938 config SYS_SUPPORTS_250HZ
1941 config SYS_SUPPORTS_256HZ
1944 config SYS_SUPPORTS_1000HZ
1947 config SYS_SUPPORTS_1024HZ
1950 config SYS_SUPPORTS_ARBIT_HZ
1952 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1953 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1954 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1955 !SYS_SUPPORTS_1024HZ
1960 default 100 if HZ_100
1961 default 128 if HZ_128
1962 default 250 if HZ_250
1963 default 256 if HZ_256
1964 default 1000 if HZ_1000
1965 default 1024 if HZ_1024
1967 source "kernel/Kconfig.preempt"
1969 config MIPS_INSANE_LARGE
1970 bool "Support for large 64-bit configurations"
1971 depends on CPU_R10000 && 64BIT
1973 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1974 previous 64-bit processors which only supported 40 bit / 1TB. If you
1975 need processes of more than 1TB virtual address space, say Y here.
1976 This will result in additional memory usage, so it is not
1977 recommended for normal users.
1980 bool "Kexec system call (EXPERIMENTAL)"
1981 depends on EXPERIMENTAL
1983 kexec is a system call that implements the ability to shutdown your
1984 current kernel, and to start another kernel. It is like a reboot
1985 but it is independent of the system firmware. And like a reboot
1986 you can start any kernel with it, not just Linux.
1988 The name comes from the similarity to the exec system call.
1990 It is an ongoing process to be certain the hardware in a machine
1991 is properly shutdown, so do not be surprised if this code does not
1992 initially work for you. It may help to enable device hotplugging
1993 support. As of this writing the exact hardware interface is
1994 strongly in flux, so no good recommendation can be made.
1997 bool "Enable seccomp to safely compute untrusted bytecode"
2001 This kernel feature is useful for number crunching applications
2002 that may need to compute untrusted bytecode during their
2003 execution. By using pipes or other transports made available to
2004 the process as file descriptors supporting the read/write
2005 syscalls, it's possible to isolate those applications in
2006 their own address space using seccomp. Once seccomp is
2007 enabled via /proc/<pid>/seccomp, it cannot be disabled
2008 and the task is only allowed to execute a few safe syscalls
2009 defined by each seccomp mode.
2011 If unsure, say Y. Only embedded should say N here.
2015 config LOCKDEP_SUPPORT
2019 config STACKTRACE_SUPPORT
2023 source "init/Kconfig"
2025 config PROBE_INITRD_HEADER
2026 bool "Probe initrd header created by addinitrd"
2027 depends on BLK_DEV_INITRD
2029 Probe initrd header at the last page of kernel image.
2030 Say Y here if you are using arch/mips/boot/addinitrd.c to
2031 add initrd or initramfs image to the kernel image.
2034 source "kernel/Kconfig.freezer"
2036 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2044 bool "Support for PCI controller"
2045 depends on HW_HAS_PCI
2048 Find out whether you have a PCI motherboard. PCI is the name of a
2049 bus system, i.e. the way the CPU talks to the other stuff inside
2050 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2056 source "drivers/pci/Kconfig"
2059 # ISA support is now enabled via select. Too many systems still have the one
2060 # or other ISA chip on the board that users don't know about so don't expect
2061 # users to choose the right thing ...
2068 depends on HW_HAS_EISA
2070 select GENERIC_ISA_DMA
2072 The Extended Industry Standard Architecture (EISA) bus was
2073 developed as an open alternative to the IBM MicroChannel bus.
2075 The EISA bus provided some of the features of the IBM MicroChannel
2076 bus while maintaining backward compatibility with cards made for
2077 the older ISA bus. The EISA bus saw limited use between 1988 and
2078 1995 when it was made obsolete by the PCI bus.
2080 Say Y here if you are building a kernel for an EISA-based machine.
2084 source "drivers/eisa/Kconfig"
2087 bool "TURBOchannel support"
2088 depends on MACH_DECSTATION
2090 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2091 processors. Documentation on writing device drivers for TurboChannel
2093 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2096 # bool "Access.Bus support"
2109 source "drivers/pcmcia/Kconfig"
2111 source "drivers/pci/hotplug/Kconfig"
2115 menu "Executable file formats"
2117 source "fs/Kconfig.binfmt"
2122 config MIPS32_COMPAT
2123 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2126 Select this option if you want Linux/MIPS 32-bit binary
2127 compatibility. Since all software available for Linux/MIPS is
2128 currently 32-bit you should say Y here.
2132 depends on MIPS32_COMPAT
2135 config SYSVIPC_COMPAT
2137 depends on COMPAT && SYSVIPC
2141 bool "Kernel support for o32 binaries"
2142 depends on MIPS32_COMPAT
2144 Select this option if you want to run o32 binaries. These are pure
2145 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2146 existing binaries are in this format.
2151 bool "Kernel support for n32 binaries"
2152 depends on MIPS32_COMPAT
2154 Select this option if you want to run n32 binaries. These are
2155 64-bit binaries using 32-bit quantities for addressing and certain
2156 data that would normally be 64-bit. They are used in special
2163 default y if MIPS32_O32 || MIPS32_N32
2167 menu "Power management options"
2169 config ARCH_HIBERNATION_POSSIBLE
2171 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2173 config ARCH_SUSPEND_POSSIBLE
2175 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2177 source "kernel/power/Kconfig"
2181 source "net/Kconfig"
2183 source "drivers/Kconfig"
2187 source "arch/mips/Kconfig.debug"
2189 source "security/Kconfig"
2191 source "crypto/Kconfig"
2193 source "lib/Kconfig"