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 CPU_DADDI_WORKAROUNDS if 64BIT
95 select CPU_R4000_WORKAROUNDS if 64BIT
96 select CPU_R4400_WORKAROUNDS if 64BIT
97 select DMA_NONCOHERENT
100 select SYS_HAS_CPU_R3000
101 select SYS_HAS_CPU_R4X00
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
104 select SYS_SUPPORTS_LITTLE_ENDIAN
105 select SYS_SUPPORTS_128HZ
106 select SYS_SUPPORTS_256HZ
107 select SYS_SUPPORTS_1024HZ
109 This enables support for DEC's MIPS based workstations. For details
110 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
111 DECstation porting pages on <http://decstation.unix-ag.org/>.
113 If you have one of the following DECstation Models you definitely
114 want to choose R4xx0 for the CPU Type:
121 otherwise choose R3000.
124 bool "Jazz family of machines"
127 select ARCH_MAY_HAVE_PC_FDC
130 select GENERIC_ISA_DMA
135 select SYS_HAS_CPU_R4X00
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
138 select SYS_SUPPORTS_100HZ
139 select GENERIC_HARDIRQS_NO__DO_IRQ
141 This a family of machines based on the MIPS R4030 chipset which was
142 used by several vendors to build RISC/os and Windows NT workstations.
143 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
144 Olivetti M700-10 workstations.
147 bool "LASAT Networks platforms"
150 select DMA_NONCOHERENT
151 select SYS_HAS_EARLY_PRINTK
154 select PCI_GT64XXX_PCI0
156 select R5000_CPU_SCACHE
157 select SYS_HAS_CPU_R5000
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select GENERIC_HARDIRQS_NO__DO_IRQ
164 bool "Lemote Fulong mini-PC"
165 select ARCH_SPARSEMEM_ENABLE
168 select SYS_HAS_CPU_LOONGSON2
169 select DMA_NONCOHERENT
172 select HAVE_STD_PC_SERIAL_PORT
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_SUPPORTS_64BIT_KERNEL
179 select SYS_SUPPORTS_LITTLE_ENDIAN
180 select SYS_SUPPORTS_HIGHMEM
181 select SYS_HAS_EARLY_PRINTK
182 select GENERIC_HARDIRQS_NO__DO_IRQ
183 select GENERIC_ISA_DMA_SUPPORT_BROKEN
186 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
190 bool "MIPS Atlas board"
194 select DMA_NONCOHERENT
195 select SYS_HAS_EARLY_PRINTK
198 select MIPS_BOARDS_GEN
200 select PCI_GT64XXX_PCI0
202 select RM7000_CPU_SCACHE
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_HAS_CPU_MIPS32_R2
206 select SYS_HAS_CPU_MIPS64_R1
207 select SYS_HAS_CPU_NEVADA
208 select SYS_HAS_CPU_RM7000
209 select SYS_SUPPORTS_32BIT_KERNEL
210 select SYS_SUPPORTS_64BIT_KERNEL
211 select SYS_SUPPORTS_BIG_ENDIAN
212 select SYS_SUPPORTS_LITTLE_ENDIAN
213 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
214 select SYS_SUPPORTS_SMARTMIPS
215 select GENERIC_HARDIRQS_NO__DO_IRQ
217 This enables support for the MIPS Technologies Atlas evaluation
221 bool "MIPS Malta board"
222 select ARCH_MAY_HAVE_PC_FDC
226 select DMA_NONCOHERENT
227 select GENERIC_ISA_DMA
232 select MIPS_BOARDS_GEN
234 select MIPS_CPU_SCACHE
235 select PCI_GT64XXX_PCI0
238 select SYS_HAS_CPU_MIPS32_R1
239 select SYS_HAS_CPU_MIPS32_R2
240 select SYS_HAS_CPU_MIPS64_R1
241 select SYS_HAS_CPU_NEVADA
242 select SYS_HAS_CPU_RM7000
243 select SYS_HAS_EARLY_PRINTK
244 select SYS_SUPPORTS_32BIT_KERNEL
245 select SYS_SUPPORTS_64BIT_KERNEL
246 select SYS_SUPPORTS_BIG_ENDIAN
247 select SYS_SUPPORTS_LITTLE_ENDIAN
248 select SYS_SUPPORTS_MULTITHREADING
249 select SYS_SUPPORTS_SMARTMIPS
251 This enables support for the MIPS Technologies Malta evaluation
255 bool "MIPS SEAD board"
259 select DMA_NONCOHERENT
260 select SYS_HAS_EARLY_PRINTK
261 select MIPS_BOARDS_GEN
262 select SYS_HAS_CPU_MIPS32_R1
263 select SYS_HAS_CPU_MIPS32_R2
264 select SYS_HAS_CPU_MIPS64_R1
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
267 select SYS_SUPPORTS_BIG_ENDIAN
268 select SYS_SUPPORTS_LITTLE_ENDIAN
269 select SYS_SUPPORTS_SMARTMIPS
271 This enables support for the MIPS Technologies SEAD evaluation
275 bool 'MIPS simulator (MIPSsim)'
278 select DMA_NONCOHERENT
279 select SYS_HAS_EARLY_PRINTK
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_HAS_CPU_MIPS32_R2
284 select SYS_HAS_EARLY_PRINTK
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_SUPPORTS_MULTITHREADING
288 select SYS_SUPPORTS_LITTLE_ENDIAN
290 This option enables support for MIPS Technologies MIPSsim software
294 bool "NEC EMMA2RH Mark-eins"
297 select DMA_NONCOHERENT
301 select SYS_SUPPORTS_32BIT_KERNEL
302 select SYS_SUPPORTS_BIG_ENDIAN
303 select SYS_SUPPORTS_LITTLE_ENDIAN
304 select SYS_HAS_CPU_R5000
306 This enables support for the R5432-based NEC Mark-eins
307 boards with R5500 CPU.
310 bool "NEC VR4100 series based machines"
313 select SYS_HAS_CPU_VR41XX
314 select GENERIC_HARDIRQS_NO__DO_IRQ
317 bool "Philips PNX8550 based JBS board"
319 select SYS_SUPPORTS_LITTLE_ENDIAN
321 config PNX8550_STB810
322 bool "Philips PNX8550 based STB810 board"
324 select SYS_SUPPORTS_LITTLE_ENDIAN
327 bool "PMC-Sierra MSP chipsets"
328 depends on EXPERIMENTAL
329 select DMA_NONCOHERENT
331 select NO_EXCEPT_FILL
333 select SYS_HAS_CPU_MIPS32_R1
334 select SYS_HAS_CPU_MIPS32_R2
335 select SYS_SUPPORTS_32BIT_KERNEL
336 select SYS_SUPPORTS_BIG_ENDIAN
337 select SYS_SUPPORTS_KGDB
340 select SERIAL_8250_CONSOLE
342 This adds support for the PMC-Sierra family of Multi-Service
343 Processor System-On-A-Chips. These parts include a number
344 of integrated peripherals, interfaces and DSPs in addition to
345 a variety of MIPS cores.
348 bool "PMC-Sierra Yosemite eval board"
357 select SYS_HAS_CPU_RM9000
358 select SYS_HAS_EARLY_PRINTK
359 select SYS_SUPPORTS_32BIT_KERNEL
360 select SYS_SUPPORTS_64BIT_KERNEL
361 select SYS_SUPPORTS_BIG_ENDIAN
362 select SYS_SUPPORTS_HIGHMEM
363 select SYS_SUPPORTS_KGDB
364 select SYS_SUPPORTS_SMP
366 Yosemite is an evaluation board for the RM9000x2 processor
367 manufactured by PMC-Sierra.
374 select GENERIC_ISA_DMA
375 select HAVE_STD_PC_SERIAL_PORT
381 select SYS_HAS_CPU_MIPS32_R1
382 select SYS_HAS_EARLY_PRINTK
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_BIG_ENDIAN
385 select SYS_SUPPORTS_LITTLE_ENDIAN
386 select GENERIC_HARDIRQS_NO__DO_IRQ
387 select NR_CPUS_DEFAULT_1
388 select SYS_SUPPORTS_SMP
390 Qemu is a software emulator which among other architectures also
391 can simulate a MIPS32 4Kc system. This patch adds support for the
392 system architecture that currently is being simulated by Qemu. It
393 will eventually be removed again when Qemu has the capability to
394 simulate actual MIPS hardware platforms. More information on Qemu
395 can be found at http://www.linux-mips.org/wiki/Qemu.
398 bool "SGI IP22 (Indy/Indigo2)"
404 select DMA_NONCOHERENT
408 select IP22_CPU_SCACHE
410 select GENERIC_ISA_DMA_SUPPORT_BROKEN
412 select SYS_HAS_CPU_R4X00
413 select SYS_HAS_CPU_R5000
414 select SYS_HAS_EARLY_PRINTK
415 select SYS_SUPPORTS_32BIT_KERNEL
416 select SYS_SUPPORTS_64BIT_KERNEL
417 select SYS_SUPPORTS_BIG_ENDIAN
419 This are the SGI Indy, Challenge S and Indigo2, as well as certain
420 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
421 that runs on these, say Y here.
424 bool "SGI IP27 (Origin200/2000)"
429 select SYS_HAS_EARLY_PRINTK
431 select NR_CPUS_DEFAULT_64
432 select SYS_HAS_CPU_R10000
433 select SYS_SUPPORTS_64BIT_KERNEL
434 select SYS_SUPPORTS_BIG_ENDIAN
435 select SYS_SUPPORTS_KGDB
436 select SYS_SUPPORTS_NUMA
437 select SYS_SUPPORTS_SMP
438 select GENERIC_HARDIRQS_NO__DO_IRQ
440 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
441 workstations. To compile a Linux kernel that runs on these, say Y
451 select DMA_NONCOHERENT
454 select R5000_CPU_SCACHE
455 select RM7000_CPU_SCACHE
456 select SYS_HAS_CPU_R5000
457 select SYS_HAS_CPU_R10000 if BROKEN
458 select SYS_HAS_CPU_RM7000
459 select SYS_HAS_CPU_NEVADA
460 select SYS_SUPPORTS_64BIT_KERNEL
461 select SYS_SUPPORTS_BIG_ENDIAN
463 If you want this kernel to run on SGI O2 workstation, say Y here.
466 bool "Sibyte BCM91120C-CRhine"
467 depends on EXPERIMENTAL
470 select SIBYTE_BCM1120
472 select SYS_HAS_CPU_SB1
473 select SYS_SUPPORTS_BIG_ENDIAN
474 select SYS_SUPPORTS_LITTLE_ENDIAN
477 bool "Sibyte BCM91120x-Carmel"
478 depends on EXPERIMENTAL
481 select SIBYTE_BCM1120
483 select SYS_HAS_CPU_SB1
484 select SYS_SUPPORTS_BIG_ENDIAN
485 select SYS_SUPPORTS_LITTLE_ENDIAN
488 bool "Sibyte BCM91125C-CRhone"
489 depends on EXPERIMENTAL
492 select SIBYTE_BCM1125
494 select SYS_HAS_CPU_SB1
495 select SYS_SUPPORTS_BIG_ENDIAN
496 select SYS_SUPPORTS_HIGHMEM
497 select SYS_SUPPORTS_LITTLE_ENDIAN
500 bool "Sibyte BCM91125E-Rhone"
501 depends on EXPERIMENTAL
504 select SIBYTE_BCM1125H
506 select SYS_HAS_CPU_SB1
507 select SYS_SUPPORTS_BIG_ENDIAN
508 select SYS_SUPPORTS_LITTLE_ENDIAN
511 bool "Sibyte BCM91250A-SWARM"
514 select NR_CPUS_DEFAULT_2
517 select SYS_HAS_CPU_SB1
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_HIGHMEM
520 select SYS_SUPPORTS_KGDB
521 select SYS_SUPPORTS_LITTLE_ENDIAN
522 select ZONE_DMA32 if 64BIT
524 config SIBYTE_LITTLESUR
525 bool "Sibyte BCM91250C2-LittleSur"
526 depends on EXPERIMENTAL
529 select NR_CPUS_DEFAULT_2
532 select SYS_HAS_CPU_SB1
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_HIGHMEM
535 select SYS_SUPPORTS_LITTLE_ENDIAN
537 config SIBYTE_SENTOSA
538 bool "Sibyte BCM91250E-Sentosa"
539 depends on EXPERIMENTAL
542 select NR_CPUS_DEFAULT_2
545 select SYS_HAS_CPU_SB1
546 select SYS_SUPPORTS_BIG_ENDIAN
547 select SYS_SUPPORTS_LITTLE_ENDIAN
550 bool "Sibyte BCM91480B-BigSur"
553 select NR_CPUS_DEFAULT_4
554 select SIBYTE_BCM1x80
556 select SYS_HAS_CPU_SB1
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_HIGHMEM
559 select SYS_SUPPORTS_LITTLE_ENDIAN
560 select ZONE_DMA32 if 64BIT
563 bool "SNI RM200/300/400"
564 select ARC if CPU_LITTLE_ENDIAN
565 select ARC32 if CPU_LITTLE_ENDIAN
566 select ARCH_MAY_HAVE_PC_FDC
570 select DMA_NONCOHERENT
571 select GENERIC_ISA_DMA
578 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
579 select SYS_HAS_CPU_R4X00
580 select SYS_HAS_CPU_R5000
581 select SYS_HAS_CPU_R10000
582 select R5000_CPU_SCACHE
583 select SYS_HAS_EARLY_PRINTK
584 select SYS_SUPPORTS_32BIT_KERNEL
585 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
586 select SYS_SUPPORTS_BIG_ENDIAN
587 select SYS_SUPPORTS_HIGHMEM
588 select SYS_SUPPORTS_LITTLE_ENDIAN
590 The SNI RM200/300/400 are MIPS-based machines manufactured by
591 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
592 Technology and now in turn merged with Fujitsu. Say Y here to
593 support this machine type.
595 config TOSHIBA_JMR3927
596 bool "Toshiba JMR-TX3927 board"
598 select DMA_NONCOHERENT
603 select SYS_HAS_CPU_TX39XX
604 select SYS_SUPPORTS_32BIT_KERNEL
605 select SYS_SUPPORTS_LITTLE_ENDIAN
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select GENERIC_HARDIRQS_NO__DO_IRQ
609 config TOSHIBA_RBTX4927
610 bool "Toshiba RBTX49[23]7 board"
614 select DMA_NONCOHERENT
615 select HAS_TXX9_SERIAL
619 select I8259 if TOSHIBA_FPCIB0
621 select SYS_HAS_CPU_TX49XX
622 select SYS_SUPPORTS_32BIT_KERNEL
623 select SYS_SUPPORTS_64BIT_KERNEL
624 select SYS_SUPPORTS_LITTLE_ENDIAN
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select SYS_SUPPORTS_KGDB
627 select GENERIC_HARDIRQS_NO__DO_IRQ
629 This Toshiba board is based on the TX4927 processor. Say Y here to
630 support this machine type
632 config TOSHIBA_RBTX4938
633 bool "Toshiba RBTX4938 board"
637 select DMA_NONCOHERENT
638 select HAS_TXX9_SERIAL
643 select SYS_HAS_CPU_TX49XX
644 select SYS_SUPPORTS_32BIT_KERNEL
645 select SYS_SUPPORTS_LITTLE_ENDIAN
646 select SYS_SUPPORTS_BIG_ENDIAN
647 select SYS_SUPPORTS_KGDB
648 select GENERIC_HARDIRQS_NO__DO_IRQ
651 This Toshiba board is based on the TX4938 processor. Say Y here to
652 support this machine type
655 bool "Wind River PPMC board"
660 select DMA_NONCOHERENT
662 select PCI_GT64XXX_PCI0
664 select SYS_HAS_CPU_MIPS32_R1
665 select SYS_HAS_CPU_MIPS32_R2
666 select SYS_HAS_CPU_MIPS64_R1
667 select SYS_HAS_CPU_NEVADA
668 select SYS_HAS_CPU_RM7000
669 select SYS_SUPPORTS_32BIT_KERNEL
670 select SYS_SUPPORTS_64BIT_KERNEL
671 select SYS_SUPPORTS_BIG_ENDIAN
672 select SYS_SUPPORTS_LITTLE_ENDIAN
674 This enables support for the Wind River MIPS32 4KC PPMC evaluation
675 board, which is based on GT64120 bridge chip.
679 source "arch/mips/au1000/Kconfig"
680 source "arch/mips/jazz/Kconfig"
681 source "arch/mips/lasat/Kconfig"
682 source "arch/mips/pmc-sierra/Kconfig"
683 source "arch/mips/sgi-ip27/Kconfig"
684 source "arch/mips/sibyte/Kconfig"
685 source "arch/mips/tx4927/Kconfig"
686 source "arch/mips/tx4938/Kconfig"
687 source "arch/mips/vr41xx/Kconfig"
691 config RWSEM_GENERIC_SPINLOCK
695 config RWSEM_XCHGADD_ALGORITHM
698 config ARCH_HAS_ILOG2_U32
702 config ARCH_HAS_ILOG2_U64
706 config ARCH_SUPPORTS_OPROFILE
708 default y if !MIPS_MT_SMTC
710 config GENERIC_FIND_NEXT_BIT
714 config GENERIC_HWEIGHT
718 config GENERIC_CALIBRATE_DELAY
722 config GENERIC_CLOCKEVENTS
730 config GENERIC_CMOS_UPDATE
734 config SCHED_NO_NO_OMIT_FRAME_POINTER
738 config GENERIC_HARDIRQS_NO__DO_IRQ
743 # Select some configuration options automatically based on user selections.
748 config ARCH_MAY_HAVE_PC_FDC
787 config DMA_NONCOHERENT
789 select DMA_NEED_PCI_MAP_STATE
791 config DMA_NEED_PCI_MAP_STATE
795 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
796 depends on SYS_HAS_EARLY_PRINTK
799 This option enables special console drivers which allow the kernel
800 to print messages very early in the bootup process.
802 This is useful for kernel debugging when your machine crashes very
803 early before the console code is initialized. For normal operation,
804 it is not recommended because it looks ugly on some machines and
805 doesn't cooperate with an X server. You should normally say N here,
806 unless you want to debug such a crash.
808 config SYS_HAS_EARLY_PRINTK
827 config MIPS_DISABLE_OBSOLETE_IDE
833 config GENERIC_ISA_DMA
835 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
837 config GENERIC_ISA_DMA_SUPPORT_BROKEN
839 select GENERIC_ISA_DMA
845 # Endianess selection. Sufficiently obscure so many users don't know what to
846 # answer,so we try hard to limit the available choices. Also the use of a
847 # choice statement should be more obvious to the user.
850 prompt "Endianess selection"
852 Some MIPS machines can be configured for either little or big endian
853 byte order. These modes require different kernels and a different
854 Linux distribution. In general there is one preferred byteorder for a
855 particular system but some systems are just as commonly used in the
856 one or the other endianness.
858 config CPU_BIG_ENDIAN
860 depends on SYS_SUPPORTS_BIG_ENDIAN
862 config CPU_LITTLE_ENDIAN
864 depends on SYS_SUPPORTS_LITTLE_ENDIAN
869 config SYS_SUPPORTS_APM_EMULATION
872 config SYS_SUPPORTS_BIG_ENDIAN
875 config SYS_SUPPORTS_LITTLE_ENDIAN
899 config MIPS_BOARDS_GEN
902 config PCI_GT64XXX_PCI0
905 config NO_EXCEPT_FILL
910 select HAS_TXX9_SERIAL
922 select DMA_NONCOHERENT
924 select SYS_HAS_CPU_MIPS32_R1
925 select SYS_HAS_EARLY_PRINTK
926 select SYS_SUPPORTS_32BIT_KERNEL
927 select GENERIC_HARDIRQS_NO__DO_IRQ
928 select SYS_SUPPORTS_KGDB
948 config MIPS_L1_CACHE_SHIFT
950 default "4" if MACH_DECSTATION
951 default "7" if SGI_IP27 || SNI_RM
952 default "4" if PMC_MSP4200_EVAL
955 config HAVE_STD_PC_SERIAL_PORT
959 bool "ARC console support"
960 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
964 depends on MACH_JAZZ || SNI_RM || SGI_IP32
969 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
986 depends on SYS_HAS_CPU_LOONGSON2
987 select CPU_SUPPORTS_32BIT_KERNEL
988 select CPU_SUPPORTS_64BIT_KERNEL
989 select CPU_SUPPORTS_HIGHMEM
991 The Loongson 2E processor implements the MIPS III instruction set
992 with many extensions.
995 bool "MIPS32 Release 1"
996 depends on SYS_HAS_CPU_MIPS32_R1
998 select CPU_HAS_PREFETCH
999 select CPU_SUPPORTS_32BIT_KERNEL
1000 select CPU_SUPPORTS_HIGHMEM
1002 Choose this option to build a kernel for release 1 or later of the
1003 MIPS32 architecture. Most modern embedded systems with a 32-bit
1004 MIPS processor are based on a MIPS32 processor. If you know the
1005 specific type of processor in your system, choose those that one
1006 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1007 Release 2 of the MIPS32 architecture is available since several
1008 years so chances are you even have a MIPS32 Release 2 processor
1009 in which case you should choose CPU_MIPS32_R2 instead for better
1012 config CPU_MIPS32_R2
1013 bool "MIPS32 Release 2"
1014 depends on SYS_HAS_CPU_MIPS32_R2
1016 select CPU_HAS_PREFETCH
1017 select CPU_SUPPORTS_32BIT_KERNEL
1018 select CPU_SUPPORTS_HIGHMEM
1020 Choose this option to build a kernel for release 2 or later of the
1021 MIPS32 architecture. Most modern embedded systems with a 32-bit
1022 MIPS processor are based on a MIPS32 processor. If you know the
1023 specific type of processor in your system, choose those that one
1024 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1026 config CPU_MIPS64_R1
1027 bool "MIPS64 Release 1"
1028 depends on SYS_HAS_CPU_MIPS64_R1
1030 select CPU_HAS_PREFETCH
1031 select CPU_SUPPORTS_32BIT_KERNEL
1032 select CPU_SUPPORTS_64BIT_KERNEL
1033 select CPU_SUPPORTS_HIGHMEM
1035 Choose this option to build a kernel for release 1 or later of the
1036 MIPS64 architecture. Many modern embedded systems with a 64-bit
1037 MIPS processor are based on a MIPS64 processor. If you know the
1038 specific type of processor in your system, choose those that one
1039 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1040 Release 2 of the MIPS64 architecture is available since several
1041 years so chances are you even have a MIPS64 Release 2 processor
1042 in which case you should choose CPU_MIPS64_R2 instead for better
1045 config CPU_MIPS64_R2
1046 bool "MIPS64 Release 2"
1047 depends on SYS_HAS_CPU_MIPS64_R2
1049 select CPU_HAS_PREFETCH
1050 select CPU_SUPPORTS_32BIT_KERNEL
1051 select CPU_SUPPORTS_64BIT_KERNEL
1052 select CPU_SUPPORTS_HIGHMEM
1054 Choose this option to build a kernel for release 2 or later of the
1055 MIPS64 architecture. Many modern embedded systems with a 64-bit
1056 MIPS processor are based on a MIPS64 processor. If you know the
1057 specific type of processor in your system, choose those that one
1058 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1062 depends on SYS_HAS_CPU_R3000
1064 select CPU_SUPPORTS_32BIT_KERNEL
1065 select CPU_SUPPORTS_HIGHMEM
1067 Please make sure to pick the right CPU type. Linux/MIPS is not
1068 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1069 *not* work on R4000 machines and vice versa. However, since most
1070 of the supported machines have an R4000 (or similar) CPU, R4x00
1071 might be a safe bet. If the resulting kernel does not work,
1072 try to recompile with R3000.
1076 depends on SYS_HAS_CPU_TX39XX
1077 select CPU_SUPPORTS_32BIT_KERNEL
1081 depends on SYS_HAS_CPU_VR41XX
1082 select CPU_SUPPORTS_32BIT_KERNEL
1083 select CPU_SUPPORTS_64BIT_KERNEL
1085 The options selects support for the NEC VR4100 series of processors.
1086 Only choose this option if you have one of these processors as a
1087 kernel built with this option will not run on any other type of
1088 processor or vice versa.
1092 depends on SYS_HAS_CPU_R4300
1094 select CPU_SUPPORTS_32BIT_KERNEL
1095 select CPU_SUPPORTS_64BIT_KERNEL
1097 MIPS Technologies R4300-series processors.
1101 depends on SYS_HAS_CPU_R4X00
1103 select CPU_SUPPORTS_32BIT_KERNEL
1104 select CPU_SUPPORTS_64BIT_KERNEL
1106 MIPS Technologies R4000-series processors other than 4300, including
1107 the R4000, R4400, R4600, and 4700.
1111 depends on SYS_HAS_CPU_TX49XX
1113 select CPU_HAS_PREFETCH
1114 select CPU_SUPPORTS_32BIT_KERNEL
1115 select CPU_SUPPORTS_64BIT_KERNEL
1119 depends on SYS_HAS_CPU_R5000
1121 select CPU_SUPPORTS_32BIT_KERNEL
1122 select CPU_SUPPORTS_64BIT_KERNEL
1124 MIPS Technologies R5000-series processors other than the Nevada.
1128 depends on SYS_HAS_CPU_R5432
1130 select CPU_SUPPORTS_32BIT_KERNEL
1131 select CPU_SUPPORTS_64BIT_KERNEL
1135 depends on EXPERIMENTAL
1137 depends on SYS_HAS_CPU_R6000
1138 select CPU_SUPPORTS_32BIT_KERNEL
1140 MIPS Technologies R6000 and R6000A series processors. Note these
1141 processors are extremely rare and the support for them is incomplete.
1145 depends on SYS_HAS_CPU_NEVADA
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1150 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1154 depends on EXPERIMENTAL
1155 depends on SYS_HAS_CPU_R8000
1157 select CPU_HAS_PREFETCH
1158 select CPU_SUPPORTS_64BIT_KERNEL
1160 MIPS Technologies R8000 processors. Note these processors are
1161 uncommon and the support for them is incomplete.
1165 depends on SYS_HAS_CPU_R10000
1167 select CPU_HAS_PREFETCH
1168 select CPU_SUPPORTS_32BIT_KERNEL
1169 select CPU_SUPPORTS_64BIT_KERNEL
1170 select CPU_SUPPORTS_HIGHMEM
1172 MIPS Technologies R10000-series processors.
1176 depends on SYS_HAS_CPU_RM7000
1178 select CPU_HAS_PREFETCH
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_64BIT_KERNEL
1181 select CPU_SUPPORTS_HIGHMEM
1185 depends on SYS_HAS_CPU_RM9000
1187 select CPU_HAS_PREFETCH
1188 select CPU_SUPPORTS_32BIT_KERNEL
1189 select CPU_SUPPORTS_64BIT_KERNEL
1190 select CPU_SUPPORTS_HIGHMEM
1191 select WEAK_ORDERING
1195 depends on SYS_HAS_CPU_SB1
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_64BIT_KERNEL
1199 select CPU_SUPPORTS_HIGHMEM
1200 select WEAK_ORDERING
1204 config SYS_HAS_CPU_LOONGSON2
1207 config SYS_HAS_CPU_MIPS32_R1
1210 config SYS_HAS_CPU_MIPS32_R2
1213 config SYS_HAS_CPU_MIPS64_R1
1216 config SYS_HAS_CPU_MIPS64_R2
1219 config SYS_HAS_CPU_R3000
1222 config SYS_HAS_CPU_TX39XX
1225 config SYS_HAS_CPU_VR41XX
1228 config SYS_HAS_CPU_R4300
1231 config SYS_HAS_CPU_R4X00
1234 config SYS_HAS_CPU_TX49XX
1237 config SYS_HAS_CPU_R5000
1240 config SYS_HAS_CPU_R5432
1243 config SYS_HAS_CPU_R6000
1246 config SYS_HAS_CPU_NEVADA
1249 config SYS_HAS_CPU_R8000
1252 config SYS_HAS_CPU_R10000
1255 config SYS_HAS_CPU_RM7000
1258 config SYS_HAS_CPU_RM9000
1261 config SYS_HAS_CPU_SB1
1265 # CPU may reorder R->R, R->W, W->R, W->W
1266 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1268 config WEAK_ORDERING
1272 # CPU may reorder reads and writes beyond LL/SC
1273 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1275 config WEAK_REORDERING_BEYOND_LLSC
1280 # These two indicate any level of the MIPS32 and MIPS64 architecture
1284 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1288 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1291 # These two indicate the revision of the architecture, either Release 1 or Release 2
1295 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1299 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1301 config SYS_SUPPORTS_32BIT_KERNEL
1303 config SYS_SUPPORTS_64BIT_KERNEL
1305 config CPU_SUPPORTS_32BIT_KERNEL
1307 config CPU_SUPPORTS_64BIT_KERNEL
1314 prompt "Kernel code model"
1316 You should only select this option if you have a workload that
1317 actually benefits from 64-bit processing or if your machine has
1318 large memory. You will only be presented a single option in this
1319 menu if your system does not support both 32-bit and 64-bit kernels.
1322 bool "32-bit kernel"
1323 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1326 Select this option if you want to build a 32-bit kernel.
1328 bool "64-bit kernel"
1329 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1331 Select this option if you want to build a 64-bit kernel.
1336 prompt "Kernel page size"
1337 default PAGE_SIZE_4KB
1339 config PAGE_SIZE_4KB
1342 This option select the standard 4kB Linux page size. On some
1343 R3000-family processors this is the only available page size. Using
1344 4kB page size will minimize memory consumption and is therefore
1345 recommended for low memory systems.
1347 config PAGE_SIZE_8KB
1349 depends on EXPERIMENTAL && CPU_R8000
1351 Using 8kB page size will result in higher performance kernel at
1352 the price of higher memory consumption. This option is available
1353 only on the R8000 processor. Not that at the time of this writing
1354 this option is still high experimental; there are also issues with
1355 compatibility of user applications.
1357 config PAGE_SIZE_16KB
1359 depends on !CPU_R3000 && !CPU_TX39XX
1361 Using 16kB page size will result in higher performance kernel at
1362 the price of higher memory consumption. This option is available on
1363 all non-R3000 family processors. Note that you will need a suitable
1364 Linux distribution to support this.
1366 config PAGE_SIZE_64KB
1368 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1370 Using 64kB page size will result in higher performance kernel at
1371 the price of higher memory consumption. This option is available on
1372 all non-R3000 family processor. Not that at the time of this
1373 writing this option is still high experimental.
1380 config IP22_CPU_SCACHE
1385 # Support for a MIPS32 / MIPS64 style S-caches
1387 config MIPS_CPU_SCACHE
1391 config R5000_CPU_SCACHE
1395 config RM7000_CPU_SCACHE
1399 config SIBYTE_DMA_PAGEOPS
1400 bool "Use DMA to clear/copy pages"
1403 Instead of using the CPU to zero and copy pages, use a Data Mover
1404 channel. These DMA channels are otherwise unused by the standard
1405 SiByte Linux port. Seems to give a small performance benefit.
1407 config CPU_HAS_PREFETCH
1411 prompt "MIPS MT options"
1413 config MIPS_MT_DISABLED
1414 bool "Disable multithreading support."
1416 Use this option if your workload can't take advantage of
1417 MIPS hardware multithreading support. On systems that don't have
1418 the option of an MT-enabled processor this option will be the only
1419 option in this menu.
1422 bool "Use 1 TC on each available VPE for SMP"
1423 depends on SYS_SUPPORTS_MULTITHREADING
1424 select CPU_MIPSR2_IRQ_VI
1425 select CPU_MIPSR2_IRQ_EI
1427 select NR_CPUS_DEFAULT_2
1429 select SYS_SUPPORTS_SCHED_SMT if SMP
1430 select SYS_SUPPORTS_SMP
1433 This is a kernel model which is also known a VSMP or lately
1434 has been marketesed into SMVP.
1437 bool "SMTC: Use all TCs on all VPEs for SMP"
1438 depends on CPU_MIPS32_R2
1439 #depends on CPU_MIPS64_R2 # once there is hardware ...
1440 depends on SYS_SUPPORTS_MULTITHREADING
1441 select GENERIC_CLOCKEVENTS_BROADCAST
1442 select CPU_MIPSR2_IRQ_VI
1443 select CPU_MIPSR2_IRQ_EI
1445 select NR_CPUS_DEFAULT_8
1447 select SYS_SUPPORTS_SMP
1450 This is a kernel model which is known a SMTC or lately has been
1451 marketesed into SMVP.
1459 bool "SMT (multithreading) scheduler support"
1460 depends on SYS_SUPPORTS_SCHED_SMT
1463 SMT scheduler support improves the CPU scheduler's decision making
1464 when dealing with MIPS MT enabled cores at a cost of slightly
1465 increased overhead in some places. If unsure say N here.
1467 config SYS_SUPPORTS_SCHED_SMT
1471 config SYS_SUPPORTS_MULTITHREADING
1474 config MIPS_MT_FPAFF
1475 bool "Dynamic FPU affinity for FP-intensive threads"
1477 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1479 config MIPS_VPE_LOADER
1480 bool "VPE loader support."
1481 depends on SYS_SUPPORTS_MULTITHREADING
1482 select CPU_MIPSR2_IRQ_VI
1483 select CPU_MIPSR2_IRQ_EI
1486 Includes a loader for loading an elf relocatable object
1487 onto another VPE and running it.
1489 config MIPS_MT_SMTC_INSTANT_REPLAY
1490 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1491 depends on MIPS_MT_SMTC && !PREEMPT
1494 SMTC pseudo-interrupts between TCs are deferred and queued
1495 if the target TC is interrupt-inhibited (IXMT). In the first
1496 SMTC prototypes, these queued IPIs were serviced on return
1497 to user mode, or on entry into the kernel idle loop. The
1498 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1499 processing, which adds runtime overhead (hence the option to turn
1500 it off), but ensures that IPIs are handled promptly even under
1501 heavy I/O interrupt load.
1503 config MIPS_MT_SMTC_IM_BACKSTOP
1504 bool "Use per-TC register bits as backstop for inhibited IM bits"
1505 depends on MIPS_MT_SMTC
1508 To support multiple TC microthreads acting as "CPUs" within
1509 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1510 during interrupt handling. To support legacy drivers and interrupt
1511 controller management code, SMTC has a "backstop" to track and
1512 if necessary restore the interrupt mask. This has some performance
1513 impact on interrupt service overhead. Disable it only if you know
1516 config MIPS_MT_SMTC_IRQAFF
1517 bool "Support IRQ affinity API"
1518 depends on MIPS_MT_SMTC
1521 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1522 for SMTC Linux kernel. Requires platform support, of which
1523 an example can be found in the MIPS kernel i8259 and Malta
1524 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1525 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1526 interrupt dispatch, and should be used only if you know what
1529 config MIPS_VPE_LOADER_TOM
1530 bool "Load VPE program into memory hidden from linux"
1531 depends on MIPS_VPE_LOADER
1534 The loader can use memory that is present but has been hidden from
1535 Linux using the kernel command line option "mem=xxMB". It's up to
1536 you to ensure the amount you put in the option and the space your
1537 program requires is less or equal to the amount physically present.
1539 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1540 config MIPS_VPE_APSP_API
1541 bool "Enable support for AP/SP API (RTLX)"
1542 depends on MIPS_VPE_LOADER
1545 config MIPS_APSP_KSPD
1547 depends on MIPS_VPE_APSP_API
1550 KSPD is a kernel daemon that accepts syscall requests from the SP
1551 side, actions them and returns the results. It also handles the
1552 "exit" syscall notifying other kernel modules the SP program is
1553 exiting. You probably want to say yes here.
1555 config SB1_PASS_1_WORKAROUNDS
1557 depends on CPU_SB1_PASS_1
1560 config SB1_PASS_2_WORKAROUNDS
1562 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1565 config SB1_PASS_2_1_WORKAROUNDS
1567 depends on CPU_SB1 && CPU_SB1_PASS_2
1570 config 64BIT_PHYS_ADDR
1576 config CPU_HAS_SMARTMIPS
1577 depends on SYS_SUPPORTS_SMARTMIPS
1578 bool "Support for the SmartMIPS ASE"
1580 SmartMIPS is a extension of the MIPS32 architecture aimed at
1581 increased security at both hardware and software level for
1582 smartcards. Enabling this option will allow proper use of the
1583 SmartMIPS instructions by Linux applications. However a kernel with
1584 this option will not work on a MIPS core without SmartMIPS core. If
1585 you don't know you probably don't have SmartMIPS and should say N
1592 # Vectored interrupt mode is an R2 feature
1594 config CPU_MIPSR2_IRQ_VI
1598 # Extended interrupt mode is an R2 feature
1600 config CPU_MIPSR2_IRQ_EI
1605 depends on !CPU_R3000
1608 config GENERIC_CLOCKEVENTS_BROADCAST
1614 config CPU_DADDI_WORKAROUNDS
1617 config CPU_R4000_WORKAROUNDS
1619 select CPU_R4400_WORKAROUNDS
1621 config CPU_R4400_WORKAROUNDS
1625 # Use the generic interrupt handling code in kernel/irq/:
1627 config GENERIC_HARDIRQS
1631 config GENERIC_IRQ_PROBE
1639 # - Highmem only makes sense for the 32-bit kernel.
1640 # - The current highmem code will only work properly on physically indexed
1641 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1642 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1643 # moment we protect the user and offer the highmem option only on machines
1644 # where it's known to be safe. This will not offer highmem on a few systems
1645 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1646 # indexed CPUs but we're playing safe.
1647 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1648 # know they might have memory configurations that could make use of highmem
1652 bool "High Memory Support"
1653 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1655 config CPU_SUPPORTS_HIGHMEM
1658 config SYS_SUPPORTS_HIGHMEM
1661 config SYS_SUPPORTS_SMARTMIPS
1664 config ARCH_FLATMEM_ENABLE
1668 config ARCH_DISCONTIGMEM_ENABLE
1670 default y if SGI_IP27
1672 Say Y to support efficient handling of discontiguous physical memory,
1673 for architectures which are either NUMA (Non-Uniform Memory Access)
1674 or have huge holes in the physical address space for other reasons.
1675 See <file:Documentation/vm/numa> for more.
1677 config ARCH_POPULATES_NODE_MAP
1680 config ARCH_SPARSEMEM_ENABLE
1682 select SPARSEMEM_STATIC
1686 depends on SYS_SUPPORTS_NUMA
1688 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1689 Access). This option improves performance on systems with more
1690 than two nodes; on two node systems it is generally better to
1691 leave it disabled; on single node systems disable this option
1694 config SYS_SUPPORTS_NUMA
1700 depends on NEED_MULTIPLE_NODES
1705 bool "Multi-Processing support"
1706 depends on SYS_SUPPORTS_SMP
1709 This enables support for systems with more than one CPU. If you have
1710 a system with only one CPU, like most personal computers, say N. If
1711 you have a system with more than one CPU, say Y.
1713 If you say N here, the kernel will run on single and multiprocessor
1714 machines, but will use only one CPU of a multiprocessor machine. If
1715 you say Y here, the kernel will run on many, but not all,
1716 singleprocessor machines. On a singleprocessor machine, the kernel
1717 will run faster if you say N here.
1719 People using multiprocessor machines who say Y here should also say
1720 Y to "Enhanced Real Time Clock Support", below.
1722 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1723 available at <http://www.tldp.org/docs.html#howto>.
1725 If you don't know what to do here, say N.
1730 config SYS_SUPPORTS_SMP
1733 config NR_CPUS_DEFAULT_1
1736 config NR_CPUS_DEFAULT_2
1739 config NR_CPUS_DEFAULT_4
1742 config NR_CPUS_DEFAULT_8
1745 config NR_CPUS_DEFAULT_16
1748 config NR_CPUS_DEFAULT_32
1751 config NR_CPUS_DEFAULT_64
1755 int "Maximum number of CPUs (2-64)"
1756 range 1 64 if NR_CPUS_DEFAULT_1
1758 default "1" if NR_CPUS_DEFAULT_1
1759 default "2" if NR_CPUS_DEFAULT_2
1760 default "4" if NR_CPUS_DEFAULT_4
1761 default "8" if NR_CPUS_DEFAULT_8
1762 default "16" if NR_CPUS_DEFAULT_16
1763 default "32" if NR_CPUS_DEFAULT_32
1764 default "64" if NR_CPUS_DEFAULT_64
1766 This allows you to specify the maximum number of CPUs which this
1767 kernel will support. The maximum supported value is 32 for 32-bit
1768 kernel and 64 for 64-bit kernels; the minimum value which makes
1769 sense is 1 for Qemu (useful only for kernel debugging purposes)
1770 and 2 for all others.
1772 This is purely to save memory - each supported CPU adds
1773 approximately eight kilobytes to the kernel image. For best
1774 performance should round up your number of processors to the next
1777 source "kernel/time/Kconfig"
1780 # Timer Interrupt Frequency Configuration
1784 prompt "Timer frequency"
1787 Allows the configuration of the timer frequency.
1790 bool "48 HZ" if SYS_SUPPORTS_48HZ
1793 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1796 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1799 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1802 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1805 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1808 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1812 config SYS_SUPPORTS_48HZ
1815 config SYS_SUPPORTS_100HZ
1818 config SYS_SUPPORTS_128HZ
1821 config SYS_SUPPORTS_250HZ
1824 config SYS_SUPPORTS_256HZ
1827 config SYS_SUPPORTS_1000HZ
1830 config SYS_SUPPORTS_1024HZ
1833 config SYS_SUPPORTS_ARBIT_HZ
1835 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1836 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1837 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1838 !SYS_SUPPORTS_1024HZ
1843 default 100 if HZ_100
1844 default 128 if HZ_128
1845 default 250 if HZ_250
1846 default 256 if HZ_256
1847 default 1000 if HZ_1000
1848 default 1024 if HZ_1024
1850 source "kernel/Kconfig.preempt"
1852 config MIPS_INSANE_LARGE
1853 bool "Support for large 64-bit configurations"
1854 depends on CPU_R10000 && 64BIT
1856 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1857 previous 64-bit processors which only supported 40 bit / 1TB. If you
1858 need processes of more than 1TB virtual address space, say Y here.
1859 This will result in additional memory usage, so it is not
1860 recommended for normal users.
1863 bool "Kexec system call (EXPERIMENTAL)"
1864 depends on EXPERIMENTAL
1866 kexec is a system call that implements the ability to shutdown your
1867 current kernel, and to start another kernel. It is like a reboot
1868 but it is independent of the system firmware. And like a reboot
1869 you can start any kernel with it, not just Linux.
1871 The name comes from the similarity to the exec system call.
1873 It is an ongoing process to be certain the hardware in a machine
1874 is properly shutdown, so do not be surprised if this code does not
1875 initially work for you. It may help to enable device hotplugging
1876 support. As of this writing the exact hardware interface is
1877 strongly in flux, so no good recommendation can be made.
1880 bool "Enable seccomp to safely compute untrusted bytecode"
1884 This kernel feature is useful for number crunching applications
1885 that may need to compute untrusted bytecode during their
1886 execution. By using pipes or other transports made available to
1887 the process as file descriptors supporting the read/write
1888 syscalls, it's possible to isolate those applications in
1889 their own address space using seccomp. Once seccomp is
1890 enabled via /proc/<pid>/seccomp, it cannot be disabled
1891 and the task is only allowed to execute a few safe syscalls
1892 defined by each seccomp mode.
1894 If unsure, say Y. Only embedded should say N here.
1898 config RWSEM_GENERIC_SPINLOCK
1902 config LOCKDEP_SUPPORT
1906 config STACKTRACE_SUPPORT
1910 source "init/Kconfig"
1912 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1920 bool "Support for PCI controller"
1921 depends on HW_HAS_PCI
1924 Find out whether you have a PCI motherboard. PCI is the name of a
1925 bus system, i.e. the way the CPU talks to the other stuff inside
1926 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1929 The PCI-HOWTO, available from
1930 <http://www.tldp.org/docs.html#howto>, contains valuable
1931 information about which PCI hardware does work under Linux and which
1937 source "drivers/pci/Kconfig"
1940 # ISA support is now enabled via select. Too many systems still have the one
1941 # or other ISA chip on the board that users don't know about so don't expect
1942 # users to choose the right thing ...
1949 depends on HW_HAS_EISA
1951 select GENERIC_ISA_DMA
1953 The Extended Industry Standard Architecture (EISA) bus was
1954 developed as an open alternative to the IBM MicroChannel bus.
1956 The EISA bus provided some of the features of the IBM MicroChannel
1957 bus while maintaining backward compatibility with cards made for
1958 the older ISA bus. The EISA bus saw limited use between 1988 and
1959 1995 when it was made obsolete by the PCI bus.
1961 Say Y here if you are building a kernel for an EISA-based machine.
1965 source "drivers/eisa/Kconfig"
1968 bool "TURBOchannel support"
1969 depends on MACH_DECSTATION
1971 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1972 processors. Documentation on writing device drivers for TurboChannel
1974 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1977 # bool "Access.Bus support"
1990 source "drivers/pcmcia/Kconfig"
1992 source "drivers/pci/hotplug/Kconfig"
1996 menu "Executable file formats"
1998 source "fs/Kconfig.binfmt"
2004 bool "Include IRIX binary compatibility"
2005 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2007 config MIPS32_COMPAT
2008 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2011 Select this option if you want Linux/MIPS 32-bit binary
2012 compatibility. Since all software available for Linux/MIPS is
2013 currently 32-bit you should say Y here.
2017 depends on MIPS32_COMPAT
2020 config SYSVIPC_COMPAT
2022 depends on COMPAT && SYSVIPC
2026 bool "Kernel support for o32 binaries"
2027 depends on MIPS32_COMPAT
2029 Select this option if you want to run o32 binaries. These are pure
2030 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2031 existing binaries are in this format.
2036 bool "Kernel support for n32 binaries"
2037 depends on MIPS32_COMPAT
2039 Select this option if you want to run n32 binaries. These are
2040 64-bit binaries using 32-bit quantities for addressing and certain
2041 data that would normally be 64-bit. They are used in special
2048 default y if MIPS32_O32 || MIPS32_N32
2052 menu "Power management options"
2054 source "kernel/power/Kconfig"
2058 source "net/Kconfig"
2060 source "drivers/Kconfig"
2064 source "kernel/Kconfig.instrumentation"
2066 source "arch/mips/Kconfig.debug"
2068 source "security/Kconfig"
2070 source "crypto/Kconfig"
2072 source "lib/Kconfig"