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
800 config DMA_NONCOHERENT
802 select DMA_NEED_PCI_MAP_STATE
804 config DMA_NEED_PCI_MAP_STATE
808 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
809 depends on SYS_HAS_EARLY_PRINTK
812 This option enables special console drivers which allow the kernel
813 to print messages very early in the bootup process.
815 This is useful for kernel debugging when your machine crashes very
816 early before the console code is initialized. For normal operation,
817 it is not recommended because it looks ugly on some machines and
818 doesn't cooperate with an X server. You should normally say N here,
819 unless you want to debug such a crash.
821 config SYS_HAS_EARLY_PRINTK
840 config MIPS_DISABLE_OBSOLETE_IDE
846 config GENERIC_ISA_DMA
848 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
850 config GENERIC_ISA_DMA_SUPPORT_BROKEN
852 select GENERIC_ISA_DMA
858 # Endianess selection. Sufficiently obscure so many users don't know what to
859 # answer,so we try hard to limit the available choices. Also the use of a
860 # choice statement should be more obvious to the user.
863 prompt "Endianess selection"
865 Some MIPS machines can be configured for either little or big endian
866 byte order. These modes require different kernels and a different
867 Linux distribution. In general there is one preferred byteorder for a
868 particular system but some systems are just as commonly used in the
869 one or the other endianness.
871 config CPU_BIG_ENDIAN
873 depends on SYS_SUPPORTS_BIG_ENDIAN
875 config CPU_LITTLE_ENDIAN
877 depends on SYS_SUPPORTS_LITTLE_ENDIAN
882 config SYS_SUPPORTS_APM_EMULATION
885 config SYS_SUPPORTS_BIG_ENDIAN
888 config SYS_SUPPORTS_LITTLE_ENDIAN
912 config MIPS_BOARDS_GEN
915 config PCI_GT64XXX_PCI0
918 config NO_EXCEPT_FILL
923 select HAS_TXX9_SERIAL
935 select DMA_NONCOHERENT
937 select SYS_HAS_CPU_MIPS32_R1
938 select SYS_HAS_EARLY_PRINTK
939 select SYS_SUPPORTS_32BIT_KERNEL
940 select GENERIC_HARDIRQS_NO__DO_IRQ
941 select SYS_SUPPORTS_KGDB
961 config MIPS_L1_CACHE_SHIFT
963 default "4" if MACH_DECSTATION
964 default "7" if SGI_IP27 || SNI_RM
965 default "4" if PMC_MSP4200_EVAL
968 config HAVE_STD_PC_SERIAL_PORT
972 bool "ARC console support"
973 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
977 depends on MACH_JAZZ || SNI_RM || SGI_IP32
982 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
999 depends on SYS_HAS_CPU_LOONGSON2
1000 select CPU_SUPPORTS_32BIT_KERNEL
1001 select CPU_SUPPORTS_64BIT_KERNEL
1002 select CPU_SUPPORTS_HIGHMEM
1004 The Loongson 2E processor implements the MIPS III instruction set
1005 with many extensions.
1007 config CPU_MIPS32_R1
1008 bool "MIPS32 Release 1"
1009 depends on SYS_HAS_CPU_MIPS32_R1
1011 select CPU_HAS_PREFETCH
1012 select CPU_SUPPORTS_32BIT_KERNEL
1013 select CPU_SUPPORTS_HIGHMEM
1015 Choose this option to build a kernel for release 1 or later of the
1016 MIPS32 architecture. Most modern embedded systems with a 32-bit
1017 MIPS processor are based on a MIPS32 processor. If you know the
1018 specific type of processor in your system, choose those that one
1019 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1020 Release 2 of the MIPS32 architecture is available since several
1021 years so chances are you even have a MIPS32 Release 2 processor
1022 in which case you should choose CPU_MIPS32_R2 instead for better
1025 config CPU_MIPS32_R2
1026 bool "MIPS32 Release 2"
1027 depends on SYS_HAS_CPU_MIPS32_R2
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 2 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.
1039 config CPU_MIPS64_R1
1040 bool "MIPS64 Release 1"
1041 depends on SYS_HAS_CPU_MIPS64_R1
1043 select CPU_HAS_PREFETCH
1044 select CPU_SUPPORTS_32BIT_KERNEL
1045 select CPU_SUPPORTS_64BIT_KERNEL
1046 select CPU_SUPPORTS_HIGHMEM
1048 Choose this option to build a kernel for release 1 or later of the
1049 MIPS64 architecture. Many modern embedded systems with a 64-bit
1050 MIPS processor are based on a MIPS64 processor. If you know the
1051 specific type of processor in your system, choose those that one
1052 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1053 Release 2 of the MIPS64 architecture is available since several
1054 years so chances are you even have a MIPS64 Release 2 processor
1055 in which case you should choose CPU_MIPS64_R2 instead for better
1058 config CPU_MIPS64_R2
1059 bool "MIPS64 Release 2"
1060 depends on SYS_HAS_CPU_MIPS64_R2
1062 select CPU_HAS_PREFETCH
1063 select CPU_SUPPORTS_32BIT_KERNEL
1064 select CPU_SUPPORTS_64BIT_KERNEL
1065 select CPU_SUPPORTS_HIGHMEM
1067 Choose this option to build a kernel for release 2 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.
1075 depends on SYS_HAS_CPU_R3000
1077 select CPU_SUPPORTS_32BIT_KERNEL
1078 select CPU_SUPPORTS_HIGHMEM
1080 Please make sure to pick the right CPU type. Linux/MIPS is not
1081 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1082 *not* work on R4000 machines and vice versa. However, since most
1083 of the supported machines have an R4000 (or similar) CPU, R4x00
1084 might be a safe bet. If the resulting kernel does not work,
1085 try to recompile with R3000.
1089 depends on SYS_HAS_CPU_TX39XX
1090 select CPU_SUPPORTS_32BIT_KERNEL
1094 depends on SYS_HAS_CPU_VR41XX
1095 select CPU_SUPPORTS_32BIT_KERNEL
1096 select CPU_SUPPORTS_64BIT_KERNEL
1098 The options selects support for the NEC VR4100 series of processors.
1099 Only choose this option if you have one of these processors as a
1100 kernel built with this option will not run on any other type of
1101 processor or vice versa.
1105 depends on SYS_HAS_CPU_R4300
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_64BIT_KERNEL
1110 MIPS Technologies R4300-series processors.
1114 depends on SYS_HAS_CPU_R4X00
1116 select CPU_SUPPORTS_32BIT_KERNEL
1117 select CPU_SUPPORTS_64BIT_KERNEL
1119 MIPS Technologies R4000-series processors other than 4300, including
1120 the R4000, R4400, R4600, and 4700.
1124 depends on SYS_HAS_CPU_TX49XX
1126 select CPU_HAS_PREFETCH
1127 select CPU_SUPPORTS_32BIT_KERNEL
1128 select CPU_SUPPORTS_64BIT_KERNEL
1132 depends on SYS_HAS_CPU_R5000
1134 select CPU_SUPPORTS_32BIT_KERNEL
1135 select CPU_SUPPORTS_64BIT_KERNEL
1137 MIPS Technologies R5000-series processors other than the Nevada.
1141 depends on SYS_HAS_CPU_R5432
1143 select CPU_SUPPORTS_32BIT_KERNEL
1144 select CPU_SUPPORTS_64BIT_KERNEL
1148 depends on EXPERIMENTAL
1150 depends on SYS_HAS_CPU_R6000
1151 select CPU_SUPPORTS_32BIT_KERNEL
1153 MIPS Technologies R6000 and R6000A series processors. Note these
1154 processors are extremely rare and the support for them is incomplete.
1158 depends on SYS_HAS_CPU_NEVADA
1160 select CPU_SUPPORTS_32BIT_KERNEL
1161 select CPU_SUPPORTS_64BIT_KERNEL
1163 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1167 depends on EXPERIMENTAL
1168 depends on SYS_HAS_CPU_R8000
1170 select CPU_HAS_PREFETCH
1171 select CPU_SUPPORTS_64BIT_KERNEL
1173 MIPS Technologies R8000 processors. Note these processors are
1174 uncommon and the support for them is incomplete.
1178 depends on SYS_HAS_CPU_R10000
1180 select CPU_HAS_PREFETCH
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1185 MIPS Technologies R10000-series processors.
1189 depends on SYS_HAS_CPU_RM7000
1191 select CPU_HAS_PREFETCH
1192 select CPU_SUPPORTS_32BIT_KERNEL
1193 select CPU_SUPPORTS_64BIT_KERNEL
1194 select CPU_SUPPORTS_HIGHMEM
1198 depends on SYS_HAS_CPU_RM9000
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1203 select CPU_SUPPORTS_HIGHMEM
1204 select WEAK_ORDERING
1208 depends on SYS_HAS_CPU_SB1
1210 select CPU_SUPPORTS_32BIT_KERNEL
1211 select CPU_SUPPORTS_64BIT_KERNEL
1212 select CPU_SUPPORTS_HIGHMEM
1213 select WEAK_ORDERING
1217 config SYS_HAS_CPU_LOONGSON2
1220 config SYS_HAS_CPU_MIPS32_R1
1223 config SYS_HAS_CPU_MIPS32_R2
1226 config SYS_HAS_CPU_MIPS64_R1
1229 config SYS_HAS_CPU_MIPS64_R2
1232 config SYS_HAS_CPU_R3000
1235 config SYS_HAS_CPU_TX39XX
1238 config SYS_HAS_CPU_VR41XX
1241 config SYS_HAS_CPU_R4300
1244 config SYS_HAS_CPU_R4X00
1247 config SYS_HAS_CPU_TX49XX
1250 config SYS_HAS_CPU_R5000
1253 config SYS_HAS_CPU_R5432
1256 config SYS_HAS_CPU_R6000
1259 config SYS_HAS_CPU_NEVADA
1262 config SYS_HAS_CPU_R8000
1265 config SYS_HAS_CPU_R10000
1268 config SYS_HAS_CPU_RM7000
1271 config SYS_HAS_CPU_RM9000
1274 config SYS_HAS_CPU_SB1
1278 # CPU may reorder R->R, R->W, W->R, W->W
1279 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1281 config WEAK_ORDERING
1285 # CPU may reorder reads and writes beyond LL/SC
1286 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1288 config WEAK_REORDERING_BEYOND_LLSC
1293 # These two indicate any level of the MIPS32 and MIPS64 architecture
1297 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1301 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1304 # These two indicate the revision of the architecture, either Release 1 or Release 2
1308 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1312 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1314 config SYS_SUPPORTS_32BIT_KERNEL
1316 config SYS_SUPPORTS_64BIT_KERNEL
1318 config CPU_SUPPORTS_32BIT_KERNEL
1320 config CPU_SUPPORTS_64BIT_KERNEL
1327 prompt "Kernel code model"
1329 You should only select this option if you have a workload that
1330 actually benefits from 64-bit processing or if your machine has
1331 large memory. You will only be presented a single option in this
1332 menu if your system does not support both 32-bit and 64-bit kernels.
1335 bool "32-bit kernel"
1336 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1339 Select this option if you want to build a 32-bit kernel.
1341 bool "64-bit kernel"
1342 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1344 Select this option if you want to build a 64-bit kernel.
1349 prompt "Kernel page size"
1350 default PAGE_SIZE_4KB
1352 config PAGE_SIZE_4KB
1355 This option select the standard 4kB Linux page size. On some
1356 R3000-family processors this is the only available page size. Using
1357 4kB page size will minimize memory consumption and is therefore
1358 recommended for low memory systems.
1360 config PAGE_SIZE_8KB
1362 depends on EXPERIMENTAL && CPU_R8000
1364 Using 8kB page size will result in higher performance kernel at
1365 the price of higher memory consumption. This option is available
1366 only on the R8000 processor. Not that at the time of this writing
1367 this option is still high experimental; there are also issues with
1368 compatibility of user applications.
1370 config PAGE_SIZE_16KB
1372 depends on !CPU_R3000 && !CPU_TX39XX
1374 Using 16kB page size will result in higher performance kernel at
1375 the price of higher memory consumption. This option is available on
1376 all non-R3000 family processors. Note that you will need a suitable
1377 Linux distribution to support this.
1379 config PAGE_SIZE_64KB
1381 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1383 Using 64kB page size will result in higher performance kernel at
1384 the price of higher memory consumption. This option is available on
1385 all non-R3000 family processor. Not that at the time of this
1386 writing this option is still high experimental.
1393 config IP22_CPU_SCACHE
1398 # Support for a MIPS32 / MIPS64 style S-caches
1400 config MIPS_CPU_SCACHE
1404 config R5000_CPU_SCACHE
1408 config RM7000_CPU_SCACHE
1412 config SIBYTE_DMA_PAGEOPS
1413 bool "Use DMA to clear/copy pages"
1416 Instead of using the CPU to zero and copy pages, use a Data Mover
1417 channel. These DMA channels are otherwise unused by the standard
1418 SiByte Linux port. Seems to give a small performance benefit.
1420 config CPU_HAS_PREFETCH
1424 prompt "MIPS MT options"
1426 config MIPS_MT_DISABLED
1427 bool "Disable multithreading support."
1429 Use this option if your workload can't take advantage of
1430 MIPS hardware multithreading support. On systems that don't have
1431 the option of an MT-enabled processor this option will be the only
1432 option in this menu.
1435 bool "Use 1 TC on each available VPE for SMP"
1436 depends on SYS_SUPPORTS_MULTITHREADING
1437 select CPU_MIPSR2_IRQ_VI
1438 select CPU_MIPSR2_IRQ_EI
1440 select NR_CPUS_DEFAULT_2
1442 select SYS_SUPPORTS_SMP
1444 This is a kernel model which is also known a VSMP or lately
1445 has been marketesed into SMVP.
1448 bool "SMTC: Use all TCs on all VPEs for SMP"
1449 depends on CPU_MIPS32_R2
1450 #depends on CPU_MIPS64_R2 # once there is hardware ...
1451 depends on SYS_SUPPORTS_MULTITHREADING
1452 select GENERIC_CLOCKEVENTS_BROADCAST
1453 select CPU_MIPSR2_IRQ_VI
1454 select CPU_MIPSR2_IRQ_EI
1456 select NR_CPUS_DEFAULT_8
1458 select SYS_SUPPORTS_SMP
1460 This is a kernel model which is known a SMTC or lately has been
1461 marketesed into SMVP.
1468 config SYS_SUPPORTS_MULTITHREADING
1471 config MIPS_MT_FPAFF
1472 bool "Dynamic FPU affinity for FP-intensive threads"
1474 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1476 config MIPS_VPE_LOADER
1477 bool "VPE loader support."
1478 depends on SYS_SUPPORTS_MULTITHREADING
1479 select CPU_MIPSR2_IRQ_VI
1480 select CPU_MIPSR2_IRQ_EI
1483 Includes a loader for loading an elf relocatable object
1484 onto another VPE and running it.
1486 config MIPS_MT_SMTC_INSTANT_REPLAY
1487 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1488 depends on MIPS_MT_SMTC && !PREEMPT
1491 SMTC pseudo-interrupts between TCs are deferred and queued
1492 if the target TC is interrupt-inhibited (IXMT). In the first
1493 SMTC prototypes, these queued IPIs were serviced on return
1494 to user mode, or on entry into the kernel idle loop. The
1495 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1496 processing, which adds runtime overhead (hence the option to turn
1497 it off), but ensures that IPIs are handled promptly even under
1498 heavy I/O interrupt load.
1500 config MIPS_MT_SMTC_IM_BACKSTOP
1501 bool "Use per-TC register bits as backstop for inhibited IM bits"
1502 depends on MIPS_MT_SMTC
1505 To support multiple TC microthreads acting as "CPUs" within
1506 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1507 during interrupt handling. To support legacy drivers and interrupt
1508 controller management code, SMTC has a "backstop" to track and
1509 if necessary restore the interrupt mask. This has some performance
1510 impact on interrupt service overhead. Disable it only if you know
1513 config MIPS_MT_SMTC_IRQAFF
1514 bool "Support IRQ affinity API"
1515 depends on MIPS_MT_SMTC
1518 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1519 for SMTC Linux kernel. Requires platform support, of which
1520 an example can be found in the MIPS kernel i8259 and Malta
1521 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1522 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1523 interrupt dispatch, and should be used only if you know what
1526 config MIPS_VPE_LOADER_TOM
1527 bool "Load VPE program into memory hidden from linux"
1528 depends on MIPS_VPE_LOADER
1531 The loader can use memory that is present but has been hidden from
1532 Linux using the kernel command line option "mem=xxMB". It's up to
1533 you to ensure the amount you put in the option and the space your
1534 program requires is less or equal to the amount physically present.
1536 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1537 config MIPS_VPE_APSP_API
1538 bool "Enable support for AP/SP API (RTLX)"
1539 depends on MIPS_VPE_LOADER
1542 config MIPS_APSP_KSPD
1544 depends on MIPS_VPE_APSP_API
1547 KSPD is a kernel daemon that accepts syscall requests from the SP
1548 side, actions them and returns the results. It also handles the
1549 "exit" syscall notifying other kernel modules the SP program is
1550 exiting. You probably want to say yes here.
1552 config SB1_PASS_1_WORKAROUNDS
1554 depends on CPU_SB1_PASS_1
1557 config SB1_PASS_2_WORKAROUNDS
1559 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1562 config SB1_PASS_2_1_WORKAROUNDS
1564 depends on CPU_SB1 && CPU_SB1_PASS_2
1567 config 64BIT_PHYS_ADDR
1573 config CPU_HAS_SMARTMIPS
1574 depends on SYS_SUPPORTS_SMARTMIPS
1575 bool "Support for the SmartMIPS ASE"
1577 SmartMIPS is a extension of the MIPS32 architecture aimed at
1578 increased security at both hardware and software level for
1579 smartcards. Enabling this option will allow proper use of the
1580 SmartMIPS instructions by Linux applications. However a kernel with
1581 this option will not work on a MIPS core without SmartMIPS core. If
1582 you don't know you probably don't have SmartMIPS and should say N
1588 config 64BIT_CONTEXT
1589 bool "Save 64bit integer registers"
1590 depends on 32BIT && CPU_LOONGSON2
1592 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1593 registers can still be accessed as 64bit, mainly for multimedia
1594 instructions. We must have all 64bit save/restored to make sure
1595 those instructions to get correct result.
1598 # Vectored interrupt mode is an R2 feature
1600 config CPU_MIPSR2_IRQ_VI
1604 # Extended interrupt mode is an R2 feature
1606 config CPU_MIPSR2_IRQ_EI
1611 depends on !CPU_R3000
1614 config GENERIC_CLOCKEVENTS_BROADCAST
1618 # Use the generic interrupt handling code in kernel/irq/:
1620 config GENERIC_HARDIRQS
1624 config GENERIC_IRQ_PROBE
1632 # - Highmem only makes sense for the 32-bit kernel.
1633 # - The current highmem code will only work properly on physically indexed
1634 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1635 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1636 # moment we protect the user and offer the highmem option only on machines
1637 # where it's known to be safe. This will not offer highmem on a few systems
1638 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1639 # indexed CPUs but we're playing safe.
1640 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1641 # know they might have memory configurations that could make use of highmem
1645 bool "High Memory Support"
1646 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1648 config CPU_SUPPORTS_HIGHMEM
1651 config SYS_SUPPORTS_HIGHMEM
1654 config SYS_SUPPORTS_SMARTMIPS
1657 config ARCH_FLATMEM_ENABLE
1661 config ARCH_DISCONTIGMEM_ENABLE
1663 default y if SGI_IP27
1665 Say Y to support efficient handling of discontiguous physical memory,
1666 for architectures which are either NUMA (Non-Uniform Memory Access)
1667 or have huge holes in the physical address space for other reasons.
1668 See <file:Documentation/vm/numa> for more.
1670 config ARCH_POPULATES_NODE_MAP
1673 config ARCH_SPARSEMEM_ENABLE
1675 select SPARSEMEM_STATIC
1679 depends on SYS_SUPPORTS_NUMA
1681 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1682 Access). This option improves performance on systems with more
1683 than two nodes; on two node systems it is generally better to
1684 leave it disabled; on single node systems disable this option
1687 config SYS_SUPPORTS_NUMA
1693 depends on NEED_MULTIPLE_NODES
1698 bool "Multi-Processing support"
1699 depends on SYS_SUPPORTS_SMP
1702 This enables support for systems with more than one CPU. If you have
1703 a system with only one CPU, like most personal computers, say N. If
1704 you have a system with more than one CPU, say Y.
1706 If you say N here, the kernel will run on single and multiprocessor
1707 machines, but will use only one CPU of a multiprocessor machine. If
1708 you say Y here, the kernel will run on many, but not all,
1709 singleprocessor machines. On a singleprocessor machine, the kernel
1710 will run faster if you say N here.
1712 People using multiprocessor machines who say Y here should also say
1713 Y to "Enhanced Real Time Clock Support", below.
1715 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1716 available at <http://www.tldp.org/docs.html#howto>.
1718 If you don't know what to do here, say N.
1720 config SYS_SUPPORTS_SMP
1723 config NR_CPUS_DEFAULT_1
1726 config NR_CPUS_DEFAULT_2
1729 config NR_CPUS_DEFAULT_4
1732 config NR_CPUS_DEFAULT_8
1735 config NR_CPUS_DEFAULT_16
1738 config NR_CPUS_DEFAULT_32
1741 config NR_CPUS_DEFAULT_64
1745 int "Maximum number of CPUs (2-64)"
1746 range 1 64 if NR_CPUS_DEFAULT_1
1748 default "1" if NR_CPUS_DEFAULT_1
1749 default "2" if NR_CPUS_DEFAULT_2
1750 default "4" if NR_CPUS_DEFAULT_4
1751 default "8" if NR_CPUS_DEFAULT_8
1752 default "16" if NR_CPUS_DEFAULT_16
1753 default "32" if NR_CPUS_DEFAULT_32
1754 default "64" if NR_CPUS_DEFAULT_64
1756 This allows you to specify the maximum number of CPUs which this
1757 kernel will support. The maximum supported value is 32 for 32-bit
1758 kernel and 64 for 64-bit kernels; the minimum value which makes
1759 sense is 1 for Qemu (useful only for kernel debugging purposes)
1760 and 2 for all others.
1762 This is purely to save memory - each supported CPU adds
1763 approximately eight kilobytes to the kernel image. For best
1764 performance should round up your number of processors to the next
1767 source "kernel/time/Kconfig"
1770 # Timer Interrupt Frequency Configuration
1774 prompt "Timer frequency"
1777 Allows the configuration of the timer frequency.
1780 bool "48 HZ" if SYS_SUPPORTS_48HZ
1783 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1786 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1789 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1792 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1795 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1798 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1802 config SYS_SUPPORTS_48HZ
1805 config SYS_SUPPORTS_100HZ
1808 config SYS_SUPPORTS_128HZ
1811 config SYS_SUPPORTS_250HZ
1814 config SYS_SUPPORTS_256HZ
1817 config SYS_SUPPORTS_1000HZ
1820 config SYS_SUPPORTS_1024HZ
1823 config SYS_SUPPORTS_ARBIT_HZ
1825 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1826 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1827 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1828 !SYS_SUPPORTS_1024HZ
1833 default 100 if HZ_100
1834 default 128 if HZ_128
1835 default 250 if HZ_250
1836 default 256 if HZ_256
1837 default 1000 if HZ_1000
1838 default 1024 if HZ_1024
1840 source "kernel/Kconfig.preempt"
1842 config MIPS_INSANE_LARGE
1843 bool "Support for large 64-bit configurations"
1844 depends on CPU_R10000 && 64BIT
1846 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1847 previous 64-bit processors which only supported 40 bit / 1TB. If you
1848 need processes of more than 1TB virtual address space, say Y here.
1849 This will result in additional memory usage, so it is not
1850 recommended for normal users.
1853 bool "Kexec system call (EXPERIMENTAL)"
1854 depends on EXPERIMENTAL
1856 kexec is a system call that implements the ability to shutdown your
1857 current kernel, and to start another kernel. It is like a reboot
1858 but it is independent of the system firmware. And like a reboot
1859 you can start any kernel with it, not just Linux.
1861 The name comes from the similarity to the exec system call.
1863 It is an ongoing process to be certain the hardware in a machine
1864 is properly shutdown, so do not be surprised if this code does not
1865 initially work for you. It may help to enable device hotplugging
1866 support. As of this writing the exact hardware interface is
1867 strongly in flux, so no good recommendation can be made.
1870 bool "Enable seccomp to safely compute untrusted bytecode"
1874 This kernel feature is useful for number crunching applications
1875 that may need to compute untrusted bytecode during their
1876 execution. By using pipes or other transports made available to
1877 the process as file descriptors supporting the read/write
1878 syscalls, it's possible to isolate those applications in
1879 their own address space using seccomp. Once seccomp is
1880 enabled via /proc/<pid>/seccomp, it cannot be disabled
1881 and the task is only allowed to execute a few safe syscalls
1882 defined by each seccomp mode.
1884 If unsure, say Y. Only embedded should say N here.
1888 config RWSEM_GENERIC_SPINLOCK
1892 config LOCKDEP_SUPPORT
1896 config STACKTRACE_SUPPORT
1900 source "init/Kconfig"
1902 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1910 bool "Support for PCI controller"
1911 depends on HW_HAS_PCI
1914 Find out whether you have a PCI motherboard. PCI is the name of a
1915 bus system, i.e. the way the CPU talks to the other stuff inside
1916 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1919 The PCI-HOWTO, available from
1920 <http://www.tldp.org/docs.html#howto>, contains valuable
1921 information about which PCI hardware does work under Linux and which
1927 source "drivers/pci/Kconfig"
1930 # ISA support is now enabled via select. Too many systems still have the one
1931 # or other ISA chip on the board that users don't know about so don't expect
1932 # users to choose the right thing ...
1939 depends on HW_HAS_EISA
1941 select GENERIC_ISA_DMA
1943 The Extended Industry Standard Architecture (EISA) bus was
1944 developed as an open alternative to the IBM MicroChannel bus.
1946 The EISA bus provided some of the features of the IBM MicroChannel
1947 bus while maintaining backward compatibility with cards made for
1948 the older ISA bus. The EISA bus saw limited use between 1988 and
1949 1995 when it was made obsolete by the PCI bus.
1951 Say Y here if you are building a kernel for an EISA-based machine.
1955 source "drivers/eisa/Kconfig"
1958 bool "TURBOchannel support"
1959 depends on MACH_DECSTATION
1961 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1962 processors. Documentation on writing device drivers for TurboChannel
1964 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1967 # bool "Access.Bus support"
1983 source "drivers/pcmcia/Kconfig"
1985 source "drivers/pci/hotplug/Kconfig"
1989 menu "Executable file formats"
1991 source "fs/Kconfig.binfmt"
1997 bool "Include IRIX binary compatibility"
1998 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2000 config MIPS32_COMPAT
2001 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2004 Select this option if you want Linux/MIPS 32-bit binary
2005 compatibility. Since all software available for Linux/MIPS is
2006 currently 32-bit you should say Y here.
2010 depends on MIPS32_COMPAT
2013 config SYSVIPC_COMPAT
2015 depends on COMPAT && SYSVIPC
2019 bool "Kernel support for o32 binaries"
2020 depends on MIPS32_COMPAT
2022 Select this option if you want to run o32 binaries. These are pure
2023 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2024 existing binaries are in this format.
2029 bool "Kernel support for n32 binaries"
2030 depends on MIPS32_COMPAT
2032 Select this option if you want to run n32 binaries. These are
2033 64-bit binaries using 32-bit quantities for addressing and certain
2034 data that would normally be 64-bit. They are used in special
2041 default y if MIPS32_O32 || MIPS32_N32
2045 menu "Power management options"
2047 source "kernel/power/Kconfig"
2051 source "net/Kconfig"
2053 source "drivers/Kconfig"
2057 source "kernel/Kconfig.instrumentation"
2059 source "arch/mips/Kconfig.debug"
2061 source "security/Kconfig"
2063 source "crypto/Kconfig"
2065 source "lib/Kconfig"