4 # Horrible source of confusion. Die, die, die ...
8 mainmenu "Linux/MIPS Kernel Configuration"
10 menu "Machine selection"
20 bool "Alchemy processor based machines"
23 bool "Basler eXcite smart camera"
32 select SYS_HAS_CPU_RM9000
33 select SYS_SUPPORTS_32BIT_KERNEL
34 select SYS_SUPPORTS_BIG_ENDIAN
35 select SYS_SUPPORTS_KGDB
37 The eXcite is a smart camera platform manufactured by
38 Basler Vision Technologies AG.
40 config BASLER_EXCITE_PROTOTYPE
41 bool "Support for pre-release units"
42 depends on BASLER_EXCITE
45 Pre-series (prototype) units are different from later ones in
46 some ways. Select this option if you have one of these. Please
47 note that a kernel built with this option selected will not be
48 able to run on normal units.
51 bool "BCM47XX based boards"
54 select DMA_NONCOHERENT
57 select SYS_HAS_CPU_MIPS32_R1
58 select SYS_SUPPORTS_32BIT_KERNEL
59 select SYS_SUPPORTS_LITTLE_ENDIAN
61 select SSB_DRIVER_MIPS
62 select SSB_DRIVER_EXTIF
63 select SSB_PCICORE_HOSTMODE if PCI
65 select SYS_HAS_EARLY_PRINTK
68 Support for BCM47XX based boards
75 select DMA_NONCOHERENT
81 select PCI_GT64XXX_PCI0
82 select SYS_HAS_CPU_NEVADA
83 select SYS_HAS_EARLY_PRINTK
84 select SYS_SUPPORTS_32BIT_KERNEL
85 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
86 select SYS_SUPPORTS_LITTLE_ENDIAN
87 select GENERIC_HARDIRQS_NO__DO_IRQ
89 config MACH_DECSTATION
94 select DMA_NONCOHERENT
97 select SYS_HAS_CPU_R3000
98 select SYS_HAS_CPU_R4X00
99 select SYS_SUPPORTS_32BIT_KERNEL
100 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
101 select SYS_SUPPORTS_LITTLE_ENDIAN
102 select SYS_SUPPORTS_128HZ
103 select SYS_SUPPORTS_256HZ
104 select SYS_SUPPORTS_1024HZ
106 This enables support for DEC's MIPS based workstations. For details
107 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
108 DECstation porting pages on <http://decstation.unix-ag.org/>.
110 If you have one of the following DECstation Models you definitely
111 want to choose R4xx0 for the CPU Type:
118 otherwise choose R3000.
121 bool "Jazz family of machines"
124 select ARCH_MAY_HAVE_PC_FDC
127 select GENERIC_ISA_DMA
133 select SYS_HAS_CPU_R4X00
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
136 select SYS_SUPPORTS_100HZ
137 select GENERIC_HARDIRQS_NO__DO_IRQ
139 This a family of machines based on the MIPS R4030 chipset which was
140 used by several vendors to build RISC/os and Windows NT workstations.
141 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
142 Olivetti M700-10 workstations.
145 bool "LASAT Networks platforms"
148 select DMA_NONCOHERENT
149 select SYS_HAS_EARLY_PRINTK
152 select PCI_GT64XXX_PCI0
154 select R5000_CPU_SCACHE
155 select SYS_HAS_CPU_R5000
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
158 select SYS_SUPPORTS_LITTLE_ENDIAN
159 select GENERIC_HARDIRQS_NO__DO_IRQ
162 bool "Lemote Fulong mini-PC"
163 select ARCH_SPARSEMEM_ENABLE
166 select SYS_HAS_CPU_LOONGSON2
167 select DMA_NONCOHERENT
170 select HAVE_STD_PC_SERIAL_PORT
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_SUPPORTS_64BIT_KERNEL
177 select SYS_SUPPORTS_LITTLE_ENDIAN
178 select SYS_SUPPORTS_HIGHMEM
179 select SYS_HAS_EARLY_PRINTK
180 select GENERIC_HARDIRQS_NO__DO_IRQ
181 select GENERIC_ISA_DMA_SUPPORT_BROKEN
184 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
188 bool "MIPS Atlas board"
192 select DMA_NONCOHERENT
193 select SYS_HAS_EARLY_PRINTK
196 select MIPS_BOARDS_GEN
198 select PCI_GT64XXX_PCI0
200 select RM7000_CPU_SCACHE
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_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_64BIT_KERNEL
209 select SYS_SUPPORTS_BIG_ENDIAN
210 select SYS_SUPPORTS_LITTLE_ENDIAN
211 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
212 select SYS_SUPPORTS_SMARTMIPS
213 select GENERIC_HARDIRQS_NO__DO_IRQ
215 This enables support for the MIPS Technologies Atlas evaluation
219 bool "MIPS Malta board"
220 select ARCH_MAY_HAVE_PC_FDC
224 select DMA_NONCOHERENT
225 select GENERIC_ISA_DMA
230 select MIPS_BOARDS_GEN
232 select MIPS_CPU_SCACHE
233 select PCI_GT64XXX_PCI0
236 select SYS_HAS_CPU_MIPS32_R1
237 select SYS_HAS_CPU_MIPS32_R2
238 select SYS_HAS_CPU_MIPS64_R1
239 select SYS_HAS_CPU_NEVADA
240 select SYS_HAS_CPU_RM7000
241 select SYS_HAS_EARLY_PRINTK
242 select SYS_SUPPORTS_32BIT_KERNEL
243 select SYS_SUPPORTS_64BIT_KERNEL
244 select SYS_SUPPORTS_BIG_ENDIAN
245 select SYS_SUPPORTS_LITTLE_ENDIAN
246 select SYS_SUPPORTS_MULTITHREADING
247 select SYS_SUPPORTS_SMARTMIPS
249 This enables support for the MIPS Technologies Malta evaluation
253 bool "MIPS SEAD board"
257 select DMA_NONCOHERENT
258 select SYS_HAS_EARLY_PRINTK
259 select MIPS_BOARDS_GEN
260 select SYS_HAS_CPU_MIPS32_R1
261 select SYS_HAS_CPU_MIPS32_R2
262 select SYS_HAS_CPU_MIPS64_R1
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
265 select SYS_SUPPORTS_BIG_ENDIAN
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_SUPPORTS_SMARTMIPS
269 This enables support for the MIPS Technologies SEAD evaluation
273 bool 'MIPS simulator (MIPSsim)'
276 select DMA_NONCOHERENT
277 select SYS_HAS_EARLY_PRINTK
280 select SYS_HAS_CPU_MIPS32_R1
281 select SYS_HAS_CPU_MIPS32_R2
282 select SYS_HAS_EARLY_PRINTK
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_BIG_ENDIAN
285 select SYS_SUPPORTS_MULTITHREADING
286 select SYS_SUPPORTS_LITTLE_ENDIAN
288 This option enables support for MIPS Technologies MIPSsim software
292 bool "NEC EMMA2RH Mark-eins"
295 select DMA_NONCOHERENT
299 select SYS_SUPPORTS_32BIT_KERNEL
300 select SYS_SUPPORTS_BIG_ENDIAN
301 select SYS_SUPPORTS_LITTLE_ENDIAN
302 select SYS_HAS_CPU_R5000
304 This enables support for the R5432-based NEC Mark-eins
305 boards with R5500 CPU.
308 bool "NEC VR4100 series based machines"
311 select SYS_HAS_CPU_VR41XX
312 select GENERIC_HARDIRQS_NO__DO_IRQ
315 bool "Philips PNX8550 based JBS board"
317 select SYS_SUPPORTS_LITTLE_ENDIAN
319 config PNX8550_STB810
320 bool "Philips PNX8550 based STB810 board"
322 select SYS_SUPPORTS_LITTLE_ENDIAN
325 bool "PMC-Sierra MSP chipsets"
326 depends on EXPERIMENTAL
327 select DMA_NONCOHERENT
329 select NO_EXCEPT_FILL
331 select SYS_HAS_CPU_MIPS32_R1
332 select SYS_HAS_CPU_MIPS32_R2
333 select SYS_SUPPORTS_32BIT_KERNEL
334 select SYS_SUPPORTS_BIG_ENDIAN
335 select SYS_SUPPORTS_KGDB
338 select SERIAL_8250_CONSOLE
340 This adds support for the PMC-Sierra family of Multi-Service
341 Processor System-On-A-Chips. These parts include a number
342 of integrated peripherals, interfaces and DSPs in addition to
343 a variety of MIPS cores.
346 bool "PMC-Sierra Yosemite eval board"
355 select SYS_HAS_CPU_RM9000
356 select SYS_HAS_EARLY_PRINTK
357 select SYS_SUPPORTS_32BIT_KERNEL
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_BIG_ENDIAN
360 select SYS_SUPPORTS_HIGHMEM
361 select SYS_SUPPORTS_KGDB
362 select SYS_SUPPORTS_SMP
364 Yosemite is an evaluation board for the RM9000x2 processor
365 manufactured by PMC-Sierra.
372 select GENERIC_ISA_DMA
373 select HAVE_STD_PC_SERIAL_PORT
380 select SYS_HAS_CPU_MIPS32_R1
381 select SYS_HAS_EARLY_PRINTK
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_BIG_ENDIAN
384 select SYS_SUPPORTS_LITTLE_ENDIAN
385 select GENERIC_HARDIRQS_NO__DO_IRQ
386 select NR_CPUS_DEFAULT_1
387 select SYS_SUPPORTS_SMP
389 Qemu is a software emulator which among other architectures also
390 can simulate a MIPS32 4Kc system. This patch adds support for the
391 system architecture that currently is being simulated by Qemu. It
392 will eventually be removed again when Qemu has the capability to
393 simulate actual MIPS hardware platforms. More information on Qemu
394 can be found at http://www.linux-mips.org/wiki/Qemu.
397 bool "SGI IP22 (Indy/Indigo2)"
403 select DMA_NONCOHERENT
407 select IP22_CPU_SCACHE
409 select GENERIC_ISA_DMA_SUPPORT_BROKEN
411 select SYS_HAS_CPU_R4X00
412 select SYS_HAS_CPU_R5000
413 select SYS_HAS_EARLY_PRINTK
414 select SYS_SUPPORTS_32BIT_KERNEL
415 select SYS_SUPPORTS_64BIT_KERNEL
416 select SYS_SUPPORTS_BIG_ENDIAN
418 This are the SGI Indy, Challenge S and Indigo2, as well as certain
419 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
420 that runs on these, say Y here.
423 bool "SGI IP27 (Origin200/2000)"
428 select SYS_HAS_EARLY_PRINTK
430 select NR_CPUS_DEFAULT_64
431 select SYS_HAS_CPU_R10000
432 select SYS_SUPPORTS_64BIT_KERNEL
433 select SYS_SUPPORTS_BIG_ENDIAN
434 select SYS_SUPPORTS_KGDB
435 select SYS_SUPPORTS_NUMA
436 select SYS_SUPPORTS_SMP
437 select GENERIC_HARDIRQS_NO__DO_IRQ
439 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
440 workstations. To compile a Linux kernel that runs on these, say Y
450 select DMA_NONCOHERENT
453 select R5000_CPU_SCACHE
454 select RM7000_CPU_SCACHE
455 select SYS_HAS_CPU_R5000
456 select SYS_HAS_CPU_R10000 if BROKEN
457 select SYS_HAS_CPU_RM7000
458 select SYS_HAS_CPU_NEVADA
459 select SYS_SUPPORTS_64BIT_KERNEL
460 select SYS_SUPPORTS_BIG_ENDIAN
462 If you want this kernel to run on SGI O2 workstation, say Y here.
465 bool "Sibyte BCM91120C-CRhine"
466 depends on EXPERIMENTAL
469 select SIBYTE_BCM1120
471 select SYS_HAS_CPU_SB1
472 select SYS_SUPPORTS_BIG_ENDIAN
473 select SYS_SUPPORTS_LITTLE_ENDIAN
476 bool "Sibyte BCM91120x-Carmel"
477 depends on EXPERIMENTAL
480 select SIBYTE_BCM1120
482 select SYS_HAS_CPU_SB1
483 select SYS_SUPPORTS_BIG_ENDIAN
484 select SYS_SUPPORTS_LITTLE_ENDIAN
487 bool "Sibyte BCM91125C-CRhone"
488 depends on EXPERIMENTAL
491 select SIBYTE_BCM1125
493 select SYS_HAS_CPU_SB1
494 select SYS_SUPPORTS_BIG_ENDIAN
495 select SYS_SUPPORTS_HIGHMEM
496 select SYS_SUPPORTS_LITTLE_ENDIAN
499 bool "Sibyte BCM91125E-Rhone"
500 depends on EXPERIMENTAL
503 select SIBYTE_BCM1125H
505 select SYS_HAS_CPU_SB1
506 select SYS_SUPPORTS_BIG_ENDIAN
507 select SYS_SUPPORTS_LITTLE_ENDIAN
510 bool "Sibyte BCM91250A-SWARM"
513 select NR_CPUS_DEFAULT_2
516 select SYS_HAS_CPU_SB1
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_KGDB
520 select SYS_SUPPORTS_LITTLE_ENDIAN
521 select ZONE_DMA32 if 64BIT
523 config SIBYTE_LITTLESUR
524 bool "Sibyte BCM91250C2-LittleSur"
525 depends on EXPERIMENTAL
528 select NR_CPUS_DEFAULT_2
531 select SYS_HAS_CPU_SB1
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
536 config SIBYTE_SENTOSA
537 bool "Sibyte BCM91250E-Sentosa"
538 depends on EXPERIMENTAL
541 select NR_CPUS_DEFAULT_2
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_LITTLE_ENDIAN
548 config SIBYTE_PTSWARM
549 bool "Sibyte BCM91250PT-PTSWARM"
550 depends on EXPERIMENTAL
553 select NR_CPUS_DEFAULT_2
556 select SYS_HAS_CPU_SB1
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_HIGHMEM
559 select SYS_SUPPORTS_LITTLE_ENDIAN
562 bool "Sibyte BCM91480B-BigSur"
565 select NR_CPUS_DEFAULT_4
566 select SIBYTE_BCM1x80
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
572 select ZONE_DMA32 if 64BIT
575 bool "SNI RM200/300/400"
576 select ARC if CPU_LITTLE_ENDIAN
577 select ARC32 if CPU_LITTLE_ENDIAN
578 select ARCH_MAY_HAVE_PC_FDC
582 select DMA_NONCOHERENT
583 select GENERIC_ISA_DMA
591 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
592 select SYS_HAS_CPU_R4X00
593 select SYS_HAS_CPU_R5000
594 select SYS_HAS_CPU_R10000
595 select R5000_CPU_SCACHE
596 select SYS_HAS_EARLY_PRINTK
597 select SYS_SUPPORTS_32BIT_KERNEL
598 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select SYS_SUPPORTS_HIGHMEM
601 select SYS_SUPPORTS_LITTLE_ENDIAN
603 The SNI RM200/300/400 are MIPS-based machines manufactured by
604 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
605 Technology and now in turn merged with Fujitsu. Say Y here to
606 support this machine type.
608 config TOSHIBA_JMR3927
609 bool "Toshiba JMR-TX3927 board"
611 select DMA_NONCOHERENT
616 select SYS_HAS_CPU_TX39XX
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select GENERIC_HARDIRQS_NO__DO_IRQ
622 config TOSHIBA_RBTX4927
623 bool "Toshiba RBTX49[23]7 board"
627 select DMA_NONCOHERENT
628 select HAS_TXX9_SERIAL
632 select I8259 if TOSHIBA_FPCIB0
634 select SYS_HAS_CPU_TX49XX
635 select SYS_SUPPORTS_32BIT_KERNEL
636 select SYS_SUPPORTS_64BIT_KERNEL
637 select SYS_SUPPORTS_LITTLE_ENDIAN
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_KGDB
640 select GENERIC_HARDIRQS_NO__DO_IRQ
642 This Toshiba board is based on the TX4927 processor. Say Y here to
643 support this machine type
645 config TOSHIBA_RBTX4938
646 bool "Toshiba RBTX4938 board"
650 select DMA_NONCOHERENT
651 select HAS_TXX9_SERIAL
656 select SYS_HAS_CPU_TX49XX
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_LITTLE_ENDIAN
659 select SYS_SUPPORTS_BIG_ENDIAN
660 select SYS_SUPPORTS_KGDB
661 select GENERIC_HARDIRQS_NO__DO_IRQ
664 This Toshiba board is based on the TX4938 processor. Say Y here to
665 support this machine type
668 bool "Wind River PPMC board"
673 select DMA_NONCOHERENT
675 select PCI_GT64XXX_PCI0
677 select SYS_HAS_CPU_MIPS32_R1
678 select SYS_HAS_CPU_MIPS32_R2
679 select SYS_HAS_CPU_MIPS64_R1
680 select SYS_HAS_CPU_NEVADA
681 select SYS_HAS_CPU_RM7000
682 select SYS_SUPPORTS_32BIT_KERNEL
683 select SYS_SUPPORTS_64BIT_KERNEL
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_LITTLE_ENDIAN
687 This enables support for the Wind River MIPS32 4KC PPMC evaluation
688 board, which is based on GT64120 bridge chip.
692 source "arch/mips/au1000/Kconfig"
693 source "arch/mips/jazz/Kconfig"
694 source "arch/mips/lasat/Kconfig"
695 source "arch/mips/pmc-sierra/Kconfig"
696 source "arch/mips/sgi-ip27/Kconfig"
697 source "arch/mips/sibyte/Kconfig"
698 source "arch/mips/tx4927/Kconfig"
699 source "arch/mips/tx4938/Kconfig"
700 source "arch/mips/vr41xx/Kconfig"
704 config RWSEM_GENERIC_SPINLOCK
708 config RWSEM_XCHGADD_ALGORITHM
711 config ARCH_HAS_ILOG2_U32
715 config ARCH_HAS_ILOG2_U64
719 config ARCH_SUPPORTS_OPROFILE
721 default y if !MIPS_MT_SMTC
723 config GENERIC_FIND_NEXT_BIT
727 config GENERIC_HWEIGHT
731 config GENERIC_CALIBRATE_DELAY
735 config GENERIC_CLOCKEVENTS
743 config GENERIC_CMOS_UPDATE
747 config SCHED_NO_NO_OMIT_FRAME_POINTER
751 config GENERIC_HARDIRQS_NO__DO_IRQ
756 # Select some configuration options automatically based on user selections.
761 config ARCH_MAY_HAVE_PC_FDC
802 select DMA_NEED_PCI_MAP_STATE
804 config DMA_NONCOHERENT
806 select DMA_NEED_PCI_MAP_STATE
808 config DMA_NEED_PCI_MAP_STATE
812 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
813 depends on SYS_HAS_EARLY_PRINTK
816 This option enables special console drivers which allow the kernel
817 to print messages very early in the bootup process.
819 This is useful for kernel debugging when your machine crashes very
820 early before the console code is initialized. For normal operation,
821 it is not recommended because it looks ugly on some machines and
822 doesn't cooperate with an X server. You should normally say N here,
823 unless you want to debug such a crash.
825 config SYS_HAS_EARLY_PRINTK
844 config MIPS_DISABLE_OBSOLETE_IDE
850 config GENERIC_ISA_DMA
852 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
854 config GENERIC_ISA_DMA_SUPPORT_BROKEN
856 select GENERIC_ISA_DMA
862 # Endianess selection. Sufficiently obscure so many users don't know what to
863 # answer,so we try hard to limit the available choices. Also the use of a
864 # choice statement should be more obvious to the user.
867 prompt "Endianess selection"
869 Some MIPS machines can be configured for either little or big endian
870 byte order. These modes require different kernels and a different
871 Linux distribution. In general there is one preferred byteorder for a
872 particular system but some systems are just as commonly used in the
873 one or the other endianness.
875 config CPU_BIG_ENDIAN
877 depends on SYS_SUPPORTS_BIG_ENDIAN
879 config CPU_LITTLE_ENDIAN
881 depends on SYS_SUPPORTS_LITTLE_ENDIAN
886 config SYS_SUPPORTS_APM_EMULATION
889 config SYS_SUPPORTS_BIG_ENDIAN
892 config SYS_SUPPORTS_LITTLE_ENDIAN
916 config MIPS_BOARDS_GEN
919 config PCI_GT64XXX_PCI0
922 config NO_EXCEPT_FILL
927 select HAS_TXX9_SERIAL
939 select DMA_NONCOHERENT
941 select SYS_HAS_CPU_MIPS32_R1
942 select SYS_HAS_EARLY_PRINTK
943 select SYS_SUPPORTS_32BIT_KERNEL
944 select GENERIC_HARDIRQS_NO__DO_IRQ
945 select SYS_SUPPORTS_KGDB
965 config MIPS_L1_CACHE_SHIFT
967 default "4" if MACH_DECSTATION
968 default "7" if SGI_IP27 || SNI_RM
969 default "4" if PMC_MSP4200_EVAL
972 config HAVE_STD_PC_SERIAL_PORT
976 bool "ARC console support"
977 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
981 depends on MACH_JAZZ || SNI_RM || SGI_IP32
986 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
1001 config CPU_LOONGSON2
1003 depends on SYS_HAS_CPU_LOONGSON2
1004 select CPU_SUPPORTS_32BIT_KERNEL
1005 select CPU_SUPPORTS_64BIT_KERNEL
1006 select CPU_SUPPORTS_HIGHMEM
1008 The Loongson 2E processor implements the MIPS III instruction set
1009 with many extensions.
1011 config CPU_MIPS32_R1
1012 bool "MIPS32 Release 1"
1013 depends on SYS_HAS_CPU_MIPS32_R1
1015 select CPU_HAS_PREFETCH
1016 select CPU_SUPPORTS_32BIT_KERNEL
1017 select CPU_SUPPORTS_HIGHMEM
1019 Choose this option to build a kernel for release 1 or later of the
1020 MIPS32 architecture. Most modern embedded systems with a 32-bit
1021 MIPS processor are based on a MIPS32 processor. If you know the
1022 specific type of processor in your system, choose those that one
1023 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1024 Release 2 of the MIPS32 architecture is available since several
1025 years so chances are you even have a MIPS32 Release 2 processor
1026 in which case you should choose CPU_MIPS32_R2 instead for better
1029 config CPU_MIPS32_R2
1030 bool "MIPS32 Release 2"
1031 depends on SYS_HAS_CPU_MIPS32_R2
1033 select CPU_HAS_PREFETCH
1034 select CPU_SUPPORTS_32BIT_KERNEL
1035 select CPU_SUPPORTS_HIGHMEM
1037 Choose this option to build a kernel for release 2 or later of the
1038 MIPS32 architecture. Most modern embedded systems with a 32-bit
1039 MIPS processor are based on a MIPS32 processor. If you know the
1040 specific type of processor in your system, choose those that one
1041 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1043 config CPU_MIPS64_R1
1044 bool "MIPS64 Release 1"
1045 depends on SYS_HAS_CPU_MIPS64_R1
1047 select CPU_HAS_PREFETCH
1048 select CPU_SUPPORTS_32BIT_KERNEL
1049 select CPU_SUPPORTS_64BIT_KERNEL
1050 select CPU_SUPPORTS_HIGHMEM
1052 Choose this option to build a kernel for release 1 or later of the
1053 MIPS64 architecture. Many modern embedded systems with a 64-bit
1054 MIPS processor are based on a MIPS64 processor. If you know the
1055 specific type of processor in your system, choose those that one
1056 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1057 Release 2 of the MIPS64 architecture is available since several
1058 years so chances are you even have a MIPS64 Release 2 processor
1059 in which case you should choose CPU_MIPS64_R2 instead for better
1062 config CPU_MIPS64_R2
1063 bool "MIPS64 Release 2"
1064 depends on SYS_HAS_CPU_MIPS64_R2
1066 select CPU_HAS_PREFETCH
1067 select CPU_SUPPORTS_32BIT_KERNEL
1068 select CPU_SUPPORTS_64BIT_KERNEL
1069 select CPU_SUPPORTS_HIGHMEM
1071 Choose this option to build a kernel for release 2 or later of the
1072 MIPS64 architecture. Many modern embedded systems with a 64-bit
1073 MIPS processor are based on a MIPS64 processor. If you know the
1074 specific type of processor in your system, choose those that one
1075 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1079 depends on SYS_HAS_CPU_R3000
1081 select CPU_SUPPORTS_32BIT_KERNEL
1082 select CPU_SUPPORTS_HIGHMEM
1084 Please make sure to pick the right CPU type. Linux/MIPS is not
1085 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1086 *not* work on R4000 machines and vice versa. However, since most
1087 of the supported machines have an R4000 (or similar) CPU, R4x00
1088 might be a safe bet. If the resulting kernel does not work,
1089 try to recompile with R3000.
1093 depends on SYS_HAS_CPU_TX39XX
1094 select CPU_SUPPORTS_32BIT_KERNEL
1098 depends on SYS_HAS_CPU_VR41XX
1099 select CPU_SUPPORTS_32BIT_KERNEL
1100 select CPU_SUPPORTS_64BIT_KERNEL
1102 The options selects support for the NEC VR4100 series of processors.
1103 Only choose this option if you have one of these processors as a
1104 kernel built with this option will not run on any other type of
1105 processor or vice versa.
1109 depends on SYS_HAS_CPU_R4300
1111 select CPU_SUPPORTS_32BIT_KERNEL
1112 select CPU_SUPPORTS_64BIT_KERNEL
1114 MIPS Technologies R4300-series processors.
1118 depends on SYS_HAS_CPU_R4X00
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1123 MIPS Technologies R4000-series processors other than 4300, including
1124 the R4000, R4400, R4600, and 4700.
1128 depends on SYS_HAS_CPU_TX49XX
1130 select CPU_HAS_PREFETCH
1131 select CPU_SUPPORTS_32BIT_KERNEL
1132 select CPU_SUPPORTS_64BIT_KERNEL
1136 depends on SYS_HAS_CPU_R5000
1138 select CPU_SUPPORTS_32BIT_KERNEL
1139 select CPU_SUPPORTS_64BIT_KERNEL
1141 MIPS Technologies R5000-series processors other than the Nevada.
1145 depends on SYS_HAS_CPU_R5432
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1152 depends on EXPERIMENTAL
1154 depends on SYS_HAS_CPU_R6000
1155 select CPU_SUPPORTS_32BIT_KERNEL
1157 MIPS Technologies R6000 and R6000A series processors. Note these
1158 processors are extremely rare and the support for them is incomplete.
1162 depends on SYS_HAS_CPU_NEVADA
1164 select CPU_SUPPORTS_32BIT_KERNEL
1165 select CPU_SUPPORTS_64BIT_KERNEL
1167 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1171 depends on EXPERIMENTAL
1172 depends on SYS_HAS_CPU_R8000
1174 select CPU_HAS_PREFETCH
1175 select CPU_SUPPORTS_64BIT_KERNEL
1177 MIPS Technologies R8000 processors. Note these processors are
1178 uncommon and the support for them is incomplete.
1182 depends on SYS_HAS_CPU_R10000
1184 select CPU_HAS_PREFETCH
1185 select CPU_SUPPORTS_32BIT_KERNEL
1186 select CPU_SUPPORTS_64BIT_KERNEL
1187 select CPU_SUPPORTS_HIGHMEM
1189 MIPS Technologies R10000-series processors.
1193 depends on SYS_HAS_CPU_RM7000
1195 select CPU_HAS_PREFETCH
1196 select CPU_SUPPORTS_32BIT_KERNEL
1197 select CPU_SUPPORTS_64BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1202 depends on SYS_HAS_CPU_RM9000
1204 select CPU_HAS_PREFETCH
1205 select CPU_SUPPORTS_32BIT_KERNEL
1206 select CPU_SUPPORTS_64BIT_KERNEL
1207 select CPU_SUPPORTS_HIGHMEM
1208 select WEAK_ORDERING
1212 depends on SYS_HAS_CPU_SB1
1214 select CPU_SUPPORTS_32BIT_KERNEL
1215 select CPU_SUPPORTS_64BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1217 select WEAK_ORDERING
1221 config SYS_HAS_CPU_LOONGSON2
1224 config SYS_HAS_CPU_MIPS32_R1
1227 config SYS_HAS_CPU_MIPS32_R2
1230 config SYS_HAS_CPU_MIPS64_R1
1233 config SYS_HAS_CPU_MIPS64_R2
1236 config SYS_HAS_CPU_R3000
1239 config SYS_HAS_CPU_TX39XX
1242 config SYS_HAS_CPU_VR41XX
1245 config SYS_HAS_CPU_R4300
1248 config SYS_HAS_CPU_R4X00
1251 config SYS_HAS_CPU_TX49XX
1254 config SYS_HAS_CPU_R5000
1257 config SYS_HAS_CPU_R5432
1260 config SYS_HAS_CPU_R6000
1263 config SYS_HAS_CPU_NEVADA
1266 config SYS_HAS_CPU_R8000
1269 config SYS_HAS_CPU_R10000
1272 config SYS_HAS_CPU_RM7000
1275 config SYS_HAS_CPU_RM9000
1278 config SYS_HAS_CPU_SB1
1282 # CPU may reorder R->R, R->W, W->R, W->W
1283 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1285 config WEAK_ORDERING
1289 # CPU may reorder reads and writes beyond LL/SC
1290 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1292 config WEAK_REORDERING_BEYOND_LLSC
1297 # These two indicate any level of the MIPS32 and MIPS64 architecture
1301 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1305 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1308 # These two indicate the revision of the architecture, either Release 1 or Release 2
1312 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1316 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1318 config SYS_SUPPORTS_32BIT_KERNEL
1320 config SYS_SUPPORTS_64BIT_KERNEL
1322 config CPU_SUPPORTS_32BIT_KERNEL
1324 config CPU_SUPPORTS_64BIT_KERNEL
1331 prompt "Kernel code model"
1333 You should only select this option if you have a workload that
1334 actually benefits from 64-bit processing or if your machine has
1335 large memory. You will only be presented a single option in this
1336 menu if your system does not support both 32-bit and 64-bit kernels.
1339 bool "32-bit kernel"
1340 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1343 Select this option if you want to build a 32-bit kernel.
1345 bool "64-bit kernel"
1346 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1348 Select this option if you want to build a 64-bit kernel.
1353 prompt "Kernel page size"
1354 default PAGE_SIZE_4KB
1356 config PAGE_SIZE_4KB
1359 This option select the standard 4kB Linux page size. On some
1360 R3000-family processors this is the only available page size. Using
1361 4kB page size will minimize memory consumption and is therefore
1362 recommended for low memory systems.
1364 config PAGE_SIZE_8KB
1366 depends on EXPERIMENTAL && CPU_R8000
1368 Using 8kB page size will result in higher performance kernel at
1369 the price of higher memory consumption. This option is available
1370 only on the R8000 processor. Not that at the time of this writing
1371 this option is still high experimental; there are also issues with
1372 compatibility of user applications.
1374 config PAGE_SIZE_16KB
1376 depends on !CPU_R3000 && !CPU_TX39XX
1378 Using 16kB page size will result in higher performance kernel at
1379 the price of higher memory consumption. This option is available on
1380 all non-R3000 family processors. Note that you will need a suitable
1381 Linux distribution to support this.
1383 config PAGE_SIZE_64KB
1385 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1387 Using 64kB page size will result in higher performance kernel at
1388 the price of higher memory consumption. This option is available on
1389 all non-R3000 family processor. Not that at the time of this
1390 writing this option is still high experimental.
1397 config IP22_CPU_SCACHE
1402 # Support for a MIPS32 / MIPS64 style S-caches
1404 config MIPS_CPU_SCACHE
1408 config R5000_CPU_SCACHE
1412 config RM7000_CPU_SCACHE
1416 config SIBYTE_DMA_PAGEOPS
1417 bool "Use DMA to clear/copy pages"
1420 Instead of using the CPU to zero and copy pages, use a Data Mover
1421 channel. These DMA channels are otherwise unused by the standard
1422 SiByte Linux port. Seems to give a small performance benefit.
1424 config CPU_HAS_PREFETCH
1428 prompt "MIPS MT options"
1430 config MIPS_MT_DISABLED
1431 bool "Disable multithreading support."
1433 Use this option if your workload can't take advantage of
1434 MIPS hardware multithreading support. On systems that don't have
1435 the option of an MT-enabled processor this option will be the only
1436 option in this menu.
1439 bool "Use 1 TC on each available VPE for SMP"
1440 depends on SYS_SUPPORTS_MULTITHREADING
1441 select CPU_MIPSR2_IRQ_VI
1442 select CPU_MIPSR2_IRQ_EI
1444 select NR_CPUS_DEFAULT_2
1446 select SYS_SUPPORTS_SMP
1448 This is a kernel model which is also known a VSMP or lately
1449 has been marketesed into SMVP.
1452 bool "SMTC: Use all TCs on all VPEs for SMP"
1453 depends on CPU_MIPS32_R2
1454 #depends on CPU_MIPS64_R2 # once there is hardware ...
1455 depends on SYS_SUPPORTS_MULTITHREADING
1456 select GENERIC_CLOCKEVENTS_BROADCAST
1457 select CPU_MIPSR2_IRQ_VI
1458 select CPU_MIPSR2_IRQ_EI
1460 select NR_CPUS_DEFAULT_8
1462 select SYS_SUPPORTS_SMP
1464 This is a kernel model which is known a SMTC or lately has been
1465 marketesed into SMVP.
1472 config SYS_SUPPORTS_MULTITHREADING
1475 config MIPS_MT_FPAFF
1476 bool "Dynamic FPU affinity for FP-intensive threads"
1478 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1480 config MIPS_VPE_LOADER
1481 bool "VPE loader support."
1482 depends on SYS_SUPPORTS_MULTITHREADING
1483 select CPU_MIPSR2_IRQ_VI
1484 select CPU_MIPSR2_IRQ_EI
1487 Includes a loader for loading an elf relocatable object
1488 onto another VPE and running it.
1490 config MIPS_MT_SMTC_INSTANT_REPLAY
1491 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1492 depends on MIPS_MT_SMTC && !PREEMPT
1495 SMTC pseudo-interrupts between TCs are deferred and queued
1496 if the target TC is interrupt-inhibited (IXMT). In the first
1497 SMTC prototypes, these queued IPIs were serviced on return
1498 to user mode, or on entry into the kernel idle loop. The
1499 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1500 processing, which adds runtime overhead (hence the option to turn
1501 it off), but ensures that IPIs are handled promptly even under
1502 heavy I/O interrupt load.
1504 config MIPS_MT_SMTC_IM_BACKSTOP
1505 bool "Use per-TC register bits as backstop for inhibited IM bits"
1506 depends on MIPS_MT_SMTC
1509 To support multiple TC microthreads acting as "CPUs" within
1510 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1511 during interrupt handling. To support legacy drivers and interrupt
1512 controller management code, SMTC has a "backstop" to track and
1513 if necessary restore the interrupt mask. This has some performance
1514 impact on interrupt service overhead. Disable it only if you know
1517 config MIPS_MT_SMTC_IRQAFF
1518 bool "Support IRQ affinity API"
1519 depends on MIPS_MT_SMTC
1522 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1523 for SMTC Linux kernel. Requires platform support, of which
1524 an example can be found in the MIPS kernel i8259 and Malta
1525 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1526 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1527 interrupt dispatch, and should be used only if you know what
1530 config MIPS_VPE_LOADER_TOM
1531 bool "Load VPE program into memory hidden from linux"
1532 depends on MIPS_VPE_LOADER
1535 The loader can use memory that is present but has been hidden from
1536 Linux using the kernel command line option "mem=xxMB". It's up to
1537 you to ensure the amount you put in the option and the space your
1538 program requires is less or equal to the amount physically present.
1540 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1541 config MIPS_VPE_APSP_API
1542 bool "Enable support for AP/SP API (RTLX)"
1543 depends on MIPS_VPE_LOADER
1546 config MIPS_APSP_KSPD
1548 depends on MIPS_VPE_APSP_API
1551 KSPD is a kernel daemon that accepts syscall requests from the SP
1552 side, actions them and returns the results. It also handles the
1553 "exit" syscall notifying other kernel modules the SP program is
1554 exiting. You probably want to say yes here.
1556 config SB1_PASS_1_WORKAROUNDS
1558 depends on CPU_SB1_PASS_1
1561 config SB1_PASS_2_WORKAROUNDS
1563 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1566 config SB1_PASS_2_1_WORKAROUNDS
1568 depends on CPU_SB1 && CPU_SB1_PASS_2
1571 config 64BIT_PHYS_ADDR
1577 config CPU_HAS_SMARTMIPS
1578 depends on SYS_SUPPORTS_SMARTMIPS
1579 bool "Support for the SmartMIPS ASE"
1581 SmartMIPS is a extension of the MIPS32 architecture aimed at
1582 increased security at both hardware and software level for
1583 smartcards. Enabling this option will allow proper use of the
1584 SmartMIPS instructions by Linux applications. However a kernel with
1585 this option will not work on a MIPS core without SmartMIPS core. If
1586 you don't know you probably don't have SmartMIPS and should say N
1592 config 64BIT_CONTEXT
1593 bool "Save 64bit integer registers"
1594 depends on 32BIT && CPU_LOONGSON2
1596 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1597 registers can still be accessed as 64bit, mainly for multimedia
1598 instructions. We must have all 64bit save/restored to make sure
1599 those instructions to get correct result.
1602 # Vectored interrupt mode is an R2 feature
1604 config CPU_MIPSR2_IRQ_VI
1608 # Extended interrupt mode is an R2 feature
1610 config CPU_MIPSR2_IRQ_EI
1615 depends on !CPU_R3000
1618 config GENERIC_CLOCKEVENTS_BROADCAST
1622 # Use the generic interrupt handling code in kernel/irq/:
1624 config GENERIC_HARDIRQS
1628 config GENERIC_IRQ_PROBE
1636 # - Highmem only makes sense for the 32-bit kernel.
1637 # - The current highmem code will only work properly on physically indexed
1638 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1639 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1640 # moment we protect the user and offer the highmem option only on machines
1641 # where it's known to be safe. This will not offer highmem on a few systems
1642 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1643 # indexed CPUs but we're playing safe.
1644 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1645 # know they might have memory configurations that could make use of highmem
1649 bool "High Memory Support"
1650 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1652 config CPU_SUPPORTS_HIGHMEM
1655 config SYS_SUPPORTS_HIGHMEM
1658 config SYS_SUPPORTS_SMARTMIPS
1661 config ARCH_FLATMEM_ENABLE
1665 config ARCH_DISCONTIGMEM_ENABLE
1667 default y if SGI_IP27
1669 Say Y to support efficient handling of discontiguous physical memory,
1670 for architectures which are either NUMA (Non-Uniform Memory Access)
1671 or have huge holes in the physical address space for other reasons.
1672 See <file:Documentation/vm/numa> for more.
1674 config ARCH_POPULATES_NODE_MAP
1677 config ARCH_SPARSEMEM_ENABLE
1679 select SPARSEMEM_STATIC
1683 depends on SYS_SUPPORTS_NUMA
1685 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1686 Access). This option improves performance on systems with more
1687 than two nodes; on two node systems it is generally better to
1688 leave it disabled; on single node systems disable this option
1691 config SYS_SUPPORTS_NUMA
1697 depends on NEED_MULTIPLE_NODES
1702 bool "Multi-Processing support"
1703 depends on SYS_SUPPORTS_SMP
1706 This enables support for systems with more than one CPU. If you have
1707 a system with only one CPU, like most personal computers, say N. If
1708 you have a system with more than one CPU, say Y.
1710 If you say N here, the kernel will run on single and multiprocessor
1711 machines, but will use only one CPU of a multiprocessor machine. If
1712 you say Y here, the kernel will run on many, but not all,
1713 singleprocessor machines. On a singleprocessor machine, the kernel
1714 will run faster if you say N here.
1716 People using multiprocessor machines who say Y here should also say
1717 Y to "Enhanced Real Time Clock Support", below.
1719 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1720 available at <http://www.tldp.org/docs.html#howto>.
1722 If you don't know what to do here, say N.
1724 config SYS_SUPPORTS_SMP
1727 config NR_CPUS_DEFAULT_1
1730 config NR_CPUS_DEFAULT_2
1733 config NR_CPUS_DEFAULT_4
1736 config NR_CPUS_DEFAULT_8
1739 config NR_CPUS_DEFAULT_16
1742 config NR_CPUS_DEFAULT_32
1745 config NR_CPUS_DEFAULT_64
1749 int "Maximum number of CPUs (2-64)"
1750 range 1 64 if NR_CPUS_DEFAULT_1
1752 default "1" if NR_CPUS_DEFAULT_1
1753 default "2" if NR_CPUS_DEFAULT_2
1754 default "4" if NR_CPUS_DEFAULT_4
1755 default "8" if NR_CPUS_DEFAULT_8
1756 default "16" if NR_CPUS_DEFAULT_16
1757 default "32" if NR_CPUS_DEFAULT_32
1758 default "64" if NR_CPUS_DEFAULT_64
1760 This allows you to specify the maximum number of CPUs which this
1761 kernel will support. The maximum supported value is 32 for 32-bit
1762 kernel and 64 for 64-bit kernels; the minimum value which makes
1763 sense is 1 for Qemu (useful only for kernel debugging purposes)
1764 and 2 for all others.
1766 This is purely to save memory - each supported CPU adds
1767 approximately eight kilobytes to the kernel image. For best
1768 performance should round up your number of processors to the next
1771 source "kernel/time/Kconfig"
1774 # Timer Interrupt Frequency Configuration
1778 prompt "Timer frequency"
1781 Allows the configuration of the timer frequency.
1784 bool "48 HZ" if SYS_SUPPORTS_48HZ
1787 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1790 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1793 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1796 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1799 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1802 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1806 config SYS_SUPPORTS_48HZ
1809 config SYS_SUPPORTS_100HZ
1812 config SYS_SUPPORTS_128HZ
1815 config SYS_SUPPORTS_250HZ
1818 config SYS_SUPPORTS_256HZ
1821 config SYS_SUPPORTS_1000HZ
1824 config SYS_SUPPORTS_1024HZ
1827 config SYS_SUPPORTS_ARBIT_HZ
1829 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1830 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1831 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1832 !SYS_SUPPORTS_1024HZ
1837 default 100 if HZ_100
1838 default 128 if HZ_128
1839 default 250 if HZ_250
1840 default 256 if HZ_256
1841 default 1000 if HZ_1000
1842 default 1024 if HZ_1024
1844 source "kernel/Kconfig.preempt"
1846 config MIPS_INSANE_LARGE
1847 bool "Support for large 64-bit configurations"
1848 depends on CPU_R10000 && 64BIT
1850 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1851 previous 64-bit processors which only supported 40 bit / 1TB. If you
1852 need processes of more than 1TB virtual address space, say Y here.
1853 This will result in additional memory usage, so it is not
1854 recommended for normal users.
1857 bool "Kexec system call (EXPERIMENTAL)"
1858 depends on EXPERIMENTAL
1860 kexec is a system call that implements the ability to shutdown your
1861 current kernel, and to start another kernel. It is like a reboot
1862 but it is independent of the system firmware. And like a reboot
1863 you can start any kernel with it, not just Linux.
1865 The name comes from the similarity to the exec system call.
1867 It is an ongoing process to be certain the hardware in a machine
1868 is properly shutdown, so do not be surprised if this code does not
1869 initially work for you. It may help to enable device hotplugging
1870 support. As of this writing the exact hardware interface is
1871 strongly in flux, so no good recommendation can be made.
1874 bool "Enable seccomp to safely compute untrusted bytecode"
1878 This kernel feature is useful for number crunching applications
1879 that may need to compute untrusted bytecode during their
1880 execution. By using pipes or other transports made available to
1881 the process as file descriptors supporting the read/write
1882 syscalls, it's possible to isolate those applications in
1883 their own address space using seccomp. Once seccomp is
1884 enabled via /proc/<pid>/seccomp, it cannot be disabled
1885 and the task is only allowed to execute a few safe syscalls
1886 defined by each seccomp mode.
1888 If unsure, say Y. Only embedded should say N here.
1892 config RWSEM_GENERIC_SPINLOCK
1896 config LOCKDEP_SUPPORT
1900 config STACKTRACE_SUPPORT
1904 source "init/Kconfig"
1906 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1914 bool "Support for PCI controller"
1915 depends on HW_HAS_PCI
1918 Find out whether you have a PCI motherboard. PCI is the name of a
1919 bus system, i.e. the way the CPU talks to the other stuff inside
1920 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1923 The PCI-HOWTO, available from
1924 <http://www.tldp.org/docs.html#howto>, contains valuable
1925 information about which PCI hardware does work under Linux and which
1931 source "drivers/pci/Kconfig"
1934 # ISA support is now enabled via select. Too many systems still have the one
1935 # or other ISA chip on the board that users don't know about so don't expect
1936 # users to choose the right thing ...
1943 depends on HW_HAS_EISA
1945 select GENERIC_ISA_DMA
1947 The Extended Industry Standard Architecture (EISA) bus was
1948 developed as an open alternative to the IBM MicroChannel bus.
1950 The EISA bus provided some of the features of the IBM MicroChannel
1951 bus while maintaining backward compatibility with cards made for
1952 the older ISA bus. The EISA bus saw limited use between 1988 and
1953 1995 when it was made obsolete by the PCI bus.
1955 Say Y here if you are building a kernel for an EISA-based machine.
1959 source "drivers/eisa/Kconfig"
1962 bool "TURBOchannel support"
1963 depends on MACH_DECSTATION
1965 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1966 processors. Documentation on writing device drivers for TurboChannel
1968 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1971 # bool "Access.Bus support"
1987 source "drivers/pcmcia/Kconfig"
1989 source "drivers/pci/hotplug/Kconfig"
1993 menu "Executable file formats"
1995 source "fs/Kconfig.binfmt"
2001 bool "Include IRIX binary compatibility"
2002 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2004 config MIPS32_COMPAT
2005 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2008 Select this option if you want Linux/MIPS 32-bit binary
2009 compatibility. Since all software available for Linux/MIPS is
2010 currently 32-bit you should say Y here.
2014 depends on MIPS32_COMPAT
2017 config SYSVIPC_COMPAT
2019 depends on COMPAT && SYSVIPC
2023 bool "Kernel support for o32 binaries"
2024 depends on MIPS32_COMPAT
2026 Select this option if you want to run o32 binaries. These are pure
2027 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2028 existing binaries are in this format.
2033 bool "Kernel support for n32 binaries"
2034 depends on MIPS32_COMPAT
2036 Select this option if you want to run n32 binaries. These are
2037 64-bit binaries using 32-bit quantities for addressing and certain
2038 data that would normally be 64-bit. They are used in special
2045 default y if MIPS32_O32 || MIPS32_N32
2049 menu "Power management options"
2051 source "kernel/power/Kconfig"
2055 source "net/Kconfig"
2057 source "drivers/Kconfig"
2061 source "kernel/Kconfig.instrumentation"
2063 source "arch/mips/Kconfig.debug"
2065 source "security/Kconfig"
2067 source "crypto/Kconfig"
2069 source "lib/Kconfig"