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"
30 select SYS_HAS_CPU_RM9000
31 select SYS_SUPPORTS_32BIT_KERNEL
32 select SYS_SUPPORTS_BIG_ENDIAN
33 select SYS_SUPPORTS_KGDB
35 The eXcite is a smart camera platform manufactured by
36 Basler Vision Technologies AG.
38 config BASLER_EXCITE_PROTOTYPE
39 bool "Support for pre-release units"
40 depends on BASLER_EXCITE
43 Pre-series (prototype) units are different from later ones in
44 some ways. Select this option if you have one of these. Please
45 note that a kernel built with this option selected will not be
46 able to run on normal units.
49 bool "BCM47XX based boards"
50 select DMA_NONCOHERENT
53 select SYS_HAS_CPU_MIPS32_R1
54 select SYS_SUPPORTS_32BIT_KERNEL
55 select SYS_SUPPORTS_LITTLE_ENDIAN
57 select SSB_DRIVER_MIPS
59 select SYS_HAS_EARLY_PRINTK
62 Support for BCM47XX based boards
66 select DMA_NONCOHERENT
72 select PCI_GT64XXX_PCI0
73 select SYS_HAS_CPU_NEVADA
74 select SYS_HAS_EARLY_PRINTK
75 select SYS_SUPPORTS_32BIT_KERNEL
76 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
77 select SYS_SUPPORTS_LITTLE_ENDIAN
78 select GENERIC_HARDIRQS_NO__DO_IRQ
80 config MACH_DECSTATION
83 select DMA_NONCOHERENT
86 select SYS_HAS_CPU_R3000
87 select SYS_HAS_CPU_R4X00
88 select SYS_SUPPORTS_32BIT_KERNEL
89 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
90 select SYS_SUPPORTS_LITTLE_ENDIAN
91 select SYS_SUPPORTS_128HZ
92 select SYS_SUPPORTS_256HZ
93 select SYS_SUPPORTS_1024HZ
95 This enables support for DEC's MIPS based workstations. For details
96 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
97 DECstation porting pages on <http://decstation.unix-ag.org/>.
99 If you have one of the following DECstation Models you definitely
100 want to choose R4xx0 for the CPU Type:
107 otherwise choose R3000.
110 bool "Jazz family of machines"
113 select ARCH_MAY_HAVE_PC_FDC
114 select GENERIC_ISA_DMA
120 select SYS_HAS_CPU_R4X00
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
123 select SYS_SUPPORTS_100HZ
124 select GENERIC_HARDIRQS_NO__DO_IRQ
126 This a family of machines based on the MIPS R4030 chipset which was
127 used by several vendors to build RISC/os and Windows NT workstations.
128 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
129 Olivetti M700-10 workstations.
132 bool "LASAT Networks platforms"
133 select DMA_NONCOHERENT
134 select SYS_HAS_EARLY_PRINTK
136 select PCI_GT64XXX_PCI0
138 select R5000_CPU_SCACHE
139 select SYS_HAS_CPU_R5000
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
142 select SYS_SUPPORTS_LITTLE_ENDIAN
143 select GENERIC_HARDIRQS_NO__DO_IRQ
146 bool "Lemote Fulong mini-PC"
147 select ARCH_SPARSEMEM_ENABLE
148 select SYS_HAS_CPU_LOONGSON2
149 select DMA_NONCOHERENT
152 select HAVE_STD_PC_SERIAL_PORT
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_64BIT_KERNEL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_HIGHMEM
161 select SYS_HAS_EARLY_PRINTK
162 select GENERIC_HARDIRQS_NO__DO_IRQ
163 select GENERIC_ISA_DMA_SUPPORT_BROKEN
166 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
170 bool "MIPS Atlas board"
172 select DMA_NONCOHERENT
173 select SYS_HAS_EARLY_PRINTK
176 select MIPS_BOARDS_GEN
178 select PCI_GT64XXX_PCI0
180 select RM7000_CPU_SCACHE
182 select SYS_HAS_CPU_MIPS32_R1
183 select SYS_HAS_CPU_MIPS32_R2
184 select SYS_HAS_CPU_MIPS64_R1
185 select SYS_HAS_CPU_NEVADA
186 select SYS_HAS_CPU_RM7000
187 select SYS_SUPPORTS_32BIT_KERNEL
188 select SYS_SUPPORTS_64BIT_KERNEL
189 select SYS_SUPPORTS_BIG_ENDIAN
190 select SYS_SUPPORTS_LITTLE_ENDIAN
191 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
192 select SYS_SUPPORTS_SMARTMIPS
193 select GENERIC_HARDIRQS_NO__DO_IRQ
195 This enables support for the MIPS Technologies Atlas evaluation
199 bool "MIPS Malta board"
200 select ARCH_MAY_HAVE_PC_FDC
202 select DMA_NONCOHERENT
203 select GENERIC_ISA_DMA
208 select MIPS_BOARDS_GEN
210 select MIPS_CPU_SCACHE
211 select PCI_GT64XXX_PCI0
214 select SYS_HAS_CPU_MIPS32_R1
215 select SYS_HAS_CPU_MIPS32_R2
216 select SYS_HAS_CPU_MIPS64_R1
217 select SYS_HAS_CPU_NEVADA
218 select SYS_HAS_CPU_RM7000
219 select SYS_HAS_EARLY_PRINTK
220 select SYS_SUPPORTS_32BIT_KERNEL
221 select SYS_SUPPORTS_64BIT_KERNEL
222 select SYS_SUPPORTS_BIG_ENDIAN
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_MULTITHREADING
225 select SYS_SUPPORTS_SMARTMIPS
227 This enables support for the MIPS Technologies Malta evaluation
231 bool "MIPS SEAD board"
233 select DMA_NONCOHERENT
234 select SYS_HAS_EARLY_PRINTK
235 select MIPS_BOARDS_GEN
236 select SYS_HAS_CPU_MIPS32_R1
237 select SYS_HAS_CPU_MIPS32_R2
238 select SYS_HAS_CPU_MIPS64_R1
239 select SYS_SUPPORTS_32BIT_KERNEL
240 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
241 select SYS_SUPPORTS_BIG_ENDIAN
242 select SYS_SUPPORTS_LITTLE_ENDIAN
243 select SYS_SUPPORTS_SMARTMIPS
245 This enables support for the MIPS Technologies SEAD evaluation
249 bool 'MIPS simulator (MIPSsim)'
250 select DMA_NONCOHERENT
251 select SYS_HAS_EARLY_PRINTK
254 select SYS_HAS_CPU_MIPS32_R1
255 select SYS_HAS_CPU_MIPS32_R2
256 select SYS_HAS_EARLY_PRINTK
257 select SYS_SUPPORTS_32BIT_KERNEL
258 select SYS_SUPPORTS_BIG_ENDIAN
259 select SYS_SUPPORTS_MULTITHREADING
260 select SYS_SUPPORTS_LITTLE_ENDIAN
262 This option enables support for MIPS Technologies MIPSsim software
266 bool "NEC EMMA2RH Mark-eins"
267 select DMA_NONCOHERENT
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_BIG_ENDIAN
273 select SYS_SUPPORTS_LITTLE_ENDIAN
274 select SYS_HAS_CPU_R5000
276 This enables support for the R5432-based NEC Mark-eins
277 boards with R5500 CPU.
280 bool "NEC VR4100 series based machines"
281 select SYS_HAS_CPU_VR41XX
282 select GENERIC_HARDIRQS_NO__DO_IRQ
285 bool "Philips PNX8550 based JBS board"
287 select SYS_SUPPORTS_LITTLE_ENDIAN
289 config PNX8550_STB810
290 bool "Philips PNX8550 based STB810 board"
292 select SYS_SUPPORTS_LITTLE_ENDIAN
295 bool "PMC-Sierra MSP chipsets"
296 depends on EXPERIMENTAL
297 select DMA_NONCOHERENT
299 select NO_EXCEPT_FILL
301 select SYS_HAS_CPU_MIPS32_R1
302 select SYS_HAS_CPU_MIPS32_R2
303 select SYS_SUPPORTS_32BIT_KERNEL
304 select SYS_SUPPORTS_BIG_ENDIAN
305 select SYS_SUPPORTS_KGDB
308 select SERIAL_8250_CONSOLE
310 This adds support for the PMC-Sierra family of Multi-Service
311 Processor System-On-A-Chips. These parts include a number
312 of integrated peripherals, interfaces and DSPs in addition to
313 a variety of MIPS cores.
316 bool "PMC-Sierra Yosemite eval board"
323 select SYS_HAS_CPU_RM9000
324 select SYS_HAS_EARLY_PRINTK
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_64BIT_KERNEL
327 select SYS_SUPPORTS_BIG_ENDIAN
328 select SYS_SUPPORTS_HIGHMEM
329 select SYS_SUPPORTS_KGDB
330 select SYS_SUPPORTS_SMP
332 Yosemite is an evaluation board for the RM9000x2 processor
333 manufactured by PMC-Sierra.
338 select GENERIC_ISA_DMA
339 select HAVE_STD_PC_SERIAL_PORT
346 select SYS_HAS_CPU_MIPS32_R1
347 select SYS_SUPPORTS_32BIT_KERNEL
348 select SYS_SUPPORTS_BIG_ENDIAN
349 select SYS_SUPPORTS_LITTLE_ENDIAN
350 select ARCH_SPARSEMEM_ENABLE
351 select GENERIC_HARDIRQS_NO__DO_IRQ
352 select NR_CPUS_DEFAULT_1
353 select SYS_SUPPORTS_SMP
355 Qemu is a software emulator which among other architectures also
356 can simulate a MIPS32 4Kc system. This patch adds support for the
357 system architecture that currently is being simulated by Qemu. It
358 will eventually be removed again when Qemu has the capability to
359 simulate actual MIPS hardware platforms. More information on Qemu
360 can be found at http://www.linux-mips.org/wiki/Qemu.
363 bool "SGI IP22 (Indy/Indigo2)"
367 select DMA_NONCOHERENT
370 select IP22_CPU_SCACHE
372 select GENERIC_ISA_DMA_SUPPORT_BROKEN
374 select SYS_HAS_CPU_R4X00
375 select SYS_HAS_CPU_R5000
376 select SYS_HAS_EARLY_PRINTK
377 select SYS_SUPPORTS_32BIT_KERNEL
378 select SYS_SUPPORTS_64BIT_KERNEL
379 select SYS_SUPPORTS_BIG_ENDIAN
381 This are the SGI Indy, Challenge S and Indigo2, as well as certain
382 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
383 that runs on these, say Y here.
386 bool "SGI IP27 (Origin200/2000)"
391 select SYS_HAS_EARLY_PRINTK
393 select NR_CPUS_DEFAULT_64
394 select SYS_HAS_CPU_R10000
395 select SYS_SUPPORTS_64BIT_KERNEL
396 select SYS_SUPPORTS_BIG_ENDIAN
397 select SYS_SUPPORTS_KGDB
398 select SYS_SUPPORTS_NUMA
399 select SYS_SUPPORTS_SMP
400 select GENERIC_HARDIRQS_NO__DO_IRQ
402 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
403 workstations. To compile a Linux kernel that runs on these, say Y
411 select DMA_NONCOHERENT
414 select R5000_CPU_SCACHE
415 select RM7000_CPU_SCACHE
416 select SYS_HAS_CPU_R5000
417 select SYS_HAS_CPU_R10000 if BROKEN
418 select SYS_HAS_CPU_RM7000
419 select SYS_HAS_CPU_NEVADA
420 select SYS_SUPPORTS_64BIT_KERNEL
421 select SYS_SUPPORTS_BIG_ENDIAN
423 If you want this kernel to run on SGI O2 workstation, say Y here.
426 bool "Sibyte BCM91120C-CRhine"
427 depends on EXPERIMENTAL
430 select SIBYTE_BCM1120
432 select SYS_HAS_CPU_SB1
433 select SYS_SUPPORTS_BIG_ENDIAN
434 select SYS_SUPPORTS_LITTLE_ENDIAN
437 bool "Sibyte BCM91120x-Carmel"
438 depends on EXPERIMENTAL
441 select SIBYTE_BCM1120
443 select SYS_HAS_CPU_SB1
444 select SYS_SUPPORTS_BIG_ENDIAN
445 select SYS_SUPPORTS_LITTLE_ENDIAN
448 bool "Sibyte BCM91125C-CRhone"
449 depends on EXPERIMENTAL
452 select SIBYTE_BCM1125
454 select SYS_HAS_CPU_SB1
455 select SYS_SUPPORTS_BIG_ENDIAN
456 select SYS_SUPPORTS_HIGHMEM
457 select SYS_SUPPORTS_LITTLE_ENDIAN
460 bool "Sibyte BCM91125E-Rhone"
461 depends on EXPERIMENTAL
464 select SIBYTE_BCM1125H
466 select SYS_HAS_CPU_SB1
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_LITTLE_ENDIAN
471 bool "Sibyte BCM91250A-SWARM"
474 select NR_CPUS_DEFAULT_2
477 select SYS_HAS_CPU_SB1
478 select SYS_SUPPORTS_BIG_ENDIAN
479 select SYS_SUPPORTS_HIGHMEM
480 select SYS_SUPPORTS_KGDB
481 select SYS_SUPPORTS_LITTLE_ENDIAN
483 config SIBYTE_LITTLESUR
484 bool "Sibyte BCM91250C2-LittleSur"
485 depends on EXPERIMENTAL
488 select NR_CPUS_DEFAULT_2
491 select SYS_HAS_CPU_SB1
492 select SYS_SUPPORTS_BIG_ENDIAN
493 select SYS_SUPPORTS_HIGHMEM
494 select SYS_SUPPORTS_LITTLE_ENDIAN
496 config SIBYTE_SENTOSA
497 bool "Sibyte BCM91250E-Sentosa"
498 depends on EXPERIMENTAL
501 select NR_CPUS_DEFAULT_2
504 select SYS_HAS_CPU_SB1
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_LITTLE_ENDIAN
508 config SIBYTE_PTSWARM
509 bool "Sibyte BCM91250PT-PTSWARM"
510 depends on EXPERIMENTAL
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_LITTLE_ENDIAN
522 bool "Sibyte BCM91480B-BigSur"
525 select NR_CPUS_DEFAULT_4
526 select SIBYTE_BCM1x80
528 select SYS_HAS_CPU_SB1
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_LITTLE_ENDIAN
533 bool "SNI RM200/300/400"
534 select ARC if CPU_LITTLE_ENDIAN
535 select ARC32 if CPU_LITTLE_ENDIAN
536 select ARCH_MAY_HAVE_PC_FDC
538 select DMA_NONCOHERENT
539 select GENERIC_ISA_DMA
547 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
548 select SYS_HAS_CPU_R4X00
549 select SYS_HAS_CPU_R5000
550 select SYS_HAS_CPU_R10000
551 select R5000_CPU_SCACHE
552 select SYS_HAS_EARLY_PRINTK
553 select SYS_SUPPORTS_32BIT_KERNEL
554 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
555 select SYS_SUPPORTS_BIG_ENDIAN
556 select SYS_SUPPORTS_HIGHMEM
557 select SYS_SUPPORTS_LITTLE_ENDIAN
559 The SNI RM200/300/400 are MIPS-based machines manufactured by
560 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
561 Technology and now in turn merged with Fujitsu. Say Y here to
562 support this machine type.
564 config TOSHIBA_JMR3927
565 bool "Toshiba JMR-TX3927 board"
566 select DMA_NONCOHERENT
571 select SYS_HAS_CPU_TX39XX
572 select SYS_SUPPORTS_32BIT_KERNEL
573 select SYS_SUPPORTS_LITTLE_ENDIAN
574 select SYS_SUPPORTS_BIG_ENDIAN
575 select GENERIC_HARDIRQS_NO__DO_IRQ
577 config TOSHIBA_RBTX4927
578 bool "Toshiba RBTX49[23]7 board"
579 select DMA_NONCOHERENT
580 select HAS_TXX9_SERIAL
584 select I8259 if TOSHIBA_FPCIB0
586 select SYS_HAS_CPU_TX49XX
587 select SYS_SUPPORTS_32BIT_KERNEL
588 select SYS_SUPPORTS_64BIT_KERNEL
589 select SYS_SUPPORTS_LITTLE_ENDIAN
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_KGDB
592 select GENERIC_HARDIRQS_NO__DO_IRQ
594 This Toshiba board is based on the TX4927 processor. Say Y here to
595 support this machine type
597 config TOSHIBA_RBTX4938
598 bool "Toshiba RBTX4938 board"
599 select DMA_NONCOHERENT
600 select HAS_TXX9_SERIAL
605 select SYS_HAS_CPU_TX49XX
606 select SYS_SUPPORTS_32BIT_KERNEL
607 select SYS_SUPPORTS_LITTLE_ENDIAN
608 select SYS_SUPPORTS_BIG_ENDIAN
609 select SYS_SUPPORTS_KGDB
610 select GENERIC_HARDIRQS_NO__DO_IRQ
613 This Toshiba board is based on the TX4938 processor. Say Y here to
614 support this machine type
617 bool "Wind River PPMC board"
620 select DMA_NONCOHERENT
622 select PCI_GT64XXX_PCI0
624 select SYS_HAS_CPU_MIPS32_R1
625 select SYS_HAS_CPU_MIPS32_R2
626 select SYS_HAS_CPU_MIPS64_R1
627 select SYS_HAS_CPU_NEVADA
628 select SYS_HAS_CPU_RM7000
629 select SYS_SUPPORTS_32BIT_KERNEL
630 select SYS_SUPPORTS_64BIT_KERNEL
631 select SYS_SUPPORTS_BIG_ENDIAN
632 select SYS_SUPPORTS_LITTLE_ENDIAN
634 This enables support for the Wind River MIPS32 4KC PPMC evaluation
635 board, which is based on GT64120 bridge chip.
639 source "arch/mips/au1000/Kconfig"
640 source "arch/mips/jazz/Kconfig"
641 source "arch/mips/lasat/Kconfig"
642 source "arch/mips/pmc-sierra/Kconfig"
643 source "arch/mips/sgi-ip27/Kconfig"
644 source "arch/mips/sibyte/Kconfig"
645 source "arch/mips/tx4927/Kconfig"
646 source "arch/mips/tx4938/Kconfig"
647 source "arch/mips/vr41xx/Kconfig"
651 config RWSEM_GENERIC_SPINLOCK
655 config RWSEM_XCHGADD_ALGORITHM
658 config ARCH_HAS_ILOG2_U32
662 config ARCH_HAS_ILOG2_U64
666 config GENERIC_FIND_NEXT_BIT
670 config GENERIC_HWEIGHT
674 config GENERIC_CALIBRATE_DELAY
678 config GENERIC_CLOCKEVENTS
686 config GENERIC_CMOS_UPDATE
690 config SCHED_NO_NO_OMIT_FRAME_POINTER
694 config GENERIC_HARDIRQS_NO__DO_IRQ
699 # Select some configuration options automatically based on user selections.
704 config ARCH_MAY_HAVE_PC_FDC
721 select DMA_NEED_PCI_MAP_STATE
723 config DMA_NONCOHERENT
725 select DMA_NEED_PCI_MAP_STATE
727 config DMA_NEED_PCI_MAP_STATE
731 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
732 depends on SYS_HAS_EARLY_PRINTK
735 This option enables special console drivers which allow the kernel
736 to print messages very early in the bootup process.
738 This is useful for kernel debugging when your machine crashes very
739 early before the console code is initialized. For normal operation,
740 it is not recommended because it looks ugly on some machines and
741 doesn't cooperate with an X server. You should normally say N here,
742 unless you want to debug such a crash.
744 config SYS_HAS_EARLY_PRINTK
763 config MIPS_DISABLE_OBSOLETE_IDE
769 config GENERIC_ISA_DMA
771 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
773 config GENERIC_ISA_DMA_SUPPORT_BROKEN
775 select GENERIC_ISA_DMA
781 # Endianess selection. Sufficiently obscure so many users don't know what to
782 # answer,so we try hard to limit the available choices. Also the use of a
783 # choice statement should be more obvious to the user.
786 prompt "Endianess selection"
788 Some MIPS machines can be configured for either little or big endian
789 byte order. These modes require different kernels and a different
790 Linux distribution. In general there is one preferred byteorder for a
791 particular system but some systems are just as commonly used in the
792 one or the other endianness.
794 config CPU_BIG_ENDIAN
796 depends on SYS_SUPPORTS_BIG_ENDIAN
798 config CPU_LITTLE_ENDIAN
800 depends on SYS_SUPPORTS_LITTLE_ENDIAN
805 config SYS_SUPPORTS_APM_EMULATION
808 config SYS_SUPPORTS_BIG_ENDIAN
811 config SYS_SUPPORTS_LITTLE_ENDIAN
835 config MIPS_BOARDS_GEN
838 config PCI_GT64XXX_PCI0
841 config NO_EXCEPT_FILL
846 select HAS_TXX9_SERIAL
858 select DMA_NONCOHERENT
860 select SYS_HAS_CPU_MIPS32_R1
861 select SYS_HAS_EARLY_PRINTK
862 select SYS_SUPPORTS_32BIT_KERNEL
863 select GENERIC_HARDIRQS_NO__DO_IRQ
864 select SYS_SUPPORTS_KGDB
884 config MIPS_L1_CACHE_SHIFT
886 default "4" if MACH_DECSTATION
887 default "7" if SGI_IP27 || SNI_RM
888 default "4" if PMC_MSP4200_EVAL
891 config HAVE_STD_PC_SERIAL_PORT
895 bool "ARC console support"
896 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
900 depends on MACH_JAZZ || SNI_RM || SGI_IP32
905 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
916 source "kernel/time/Kconfig"
924 depends on SYS_HAS_CPU_LOONGSON2
925 select CPU_SUPPORTS_32BIT_KERNEL
926 select CPU_SUPPORTS_64BIT_KERNEL
927 select CPU_SUPPORTS_HIGHMEM
929 The Loongson 2E processor implements the MIPS III instruction set
930 with many extensions.
933 bool "MIPS32 Release 1"
934 depends on SYS_HAS_CPU_MIPS32_R1
936 select CPU_HAS_PREFETCH
937 select CPU_SUPPORTS_32BIT_KERNEL
938 select CPU_SUPPORTS_HIGHMEM
940 Choose this option to build a kernel for release 1 or later of the
941 MIPS32 architecture. Most modern embedded systems with a 32-bit
942 MIPS processor are based on a MIPS32 processor. If you know the
943 specific type of processor in your system, choose those that one
944 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
945 Release 2 of the MIPS32 architecture is available since several
946 years so chances are you even have a MIPS32 Release 2 processor
947 in which case you should choose CPU_MIPS32_R2 instead for better
951 bool "MIPS32 Release 2"
952 depends on SYS_HAS_CPU_MIPS32_R2
954 select CPU_HAS_PREFETCH
955 select CPU_SUPPORTS_32BIT_KERNEL
956 select CPU_SUPPORTS_HIGHMEM
958 Choose this option to build a kernel for release 2 or later of the
959 MIPS32 architecture. Most modern embedded systems with a 32-bit
960 MIPS processor are based on a MIPS32 processor. If you know the
961 specific type of processor in your system, choose those that one
962 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
965 bool "MIPS64 Release 1"
966 depends on SYS_HAS_CPU_MIPS64_R1
968 select CPU_HAS_PREFETCH
969 select CPU_SUPPORTS_32BIT_KERNEL
970 select CPU_SUPPORTS_64BIT_KERNEL
971 select CPU_SUPPORTS_HIGHMEM
973 Choose this option to build a kernel for release 1 or later of the
974 MIPS64 architecture. Many modern embedded systems with a 64-bit
975 MIPS processor are based on a MIPS64 processor. If you know the
976 specific type of processor in your system, choose those that one
977 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
978 Release 2 of the MIPS64 architecture is available since several
979 years so chances are you even have a MIPS64 Release 2 processor
980 in which case you should choose CPU_MIPS64_R2 instead for better
984 bool "MIPS64 Release 2"
985 depends on SYS_HAS_CPU_MIPS64_R2
987 select CPU_HAS_PREFETCH
988 select CPU_SUPPORTS_32BIT_KERNEL
989 select CPU_SUPPORTS_64BIT_KERNEL
990 select CPU_SUPPORTS_HIGHMEM
992 Choose this option to build a kernel for release 2 or later of the
993 MIPS64 architecture. Many modern embedded systems with a 64-bit
994 MIPS processor are based on a MIPS64 processor. If you know the
995 specific type of processor in your system, choose those that one
996 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1000 depends on SYS_HAS_CPU_R3000
1002 select CPU_SUPPORTS_32BIT_KERNEL
1003 select CPU_SUPPORTS_HIGHMEM
1005 Please make sure to pick the right CPU type. Linux/MIPS is not
1006 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1007 *not* work on R4000 machines and vice versa. However, since most
1008 of the supported machines have an R4000 (or similar) CPU, R4x00
1009 might be a safe bet. If the resulting kernel does not work,
1010 try to recompile with R3000.
1014 depends on SYS_HAS_CPU_TX39XX
1015 select CPU_SUPPORTS_32BIT_KERNEL
1019 depends on SYS_HAS_CPU_VR41XX
1020 select CPU_SUPPORTS_32BIT_KERNEL
1021 select CPU_SUPPORTS_64BIT_KERNEL
1023 The options selects support for the NEC VR4100 series of processors.
1024 Only choose this option if you have one of these processors as a
1025 kernel built with this option will not run on any other type of
1026 processor or vice versa.
1030 depends on SYS_HAS_CPU_R4300
1032 select CPU_SUPPORTS_32BIT_KERNEL
1033 select CPU_SUPPORTS_64BIT_KERNEL
1035 MIPS Technologies R4300-series processors.
1039 depends on SYS_HAS_CPU_R4X00
1041 select CPU_SUPPORTS_32BIT_KERNEL
1042 select CPU_SUPPORTS_64BIT_KERNEL
1044 MIPS Technologies R4000-series processors other than 4300, including
1045 the R4000, R4400, R4600, and 4700.
1049 depends on SYS_HAS_CPU_TX49XX
1051 select CPU_HAS_PREFETCH
1052 select CPU_SUPPORTS_32BIT_KERNEL
1053 select CPU_SUPPORTS_64BIT_KERNEL
1057 depends on SYS_HAS_CPU_R5000
1059 select CPU_SUPPORTS_32BIT_KERNEL
1060 select CPU_SUPPORTS_64BIT_KERNEL
1062 MIPS Technologies R5000-series processors other than the Nevada.
1066 depends on SYS_HAS_CPU_R5432
1068 select CPU_SUPPORTS_32BIT_KERNEL
1069 select CPU_SUPPORTS_64BIT_KERNEL
1073 depends on EXPERIMENTAL
1075 depends on SYS_HAS_CPU_R6000
1076 select CPU_SUPPORTS_32BIT_KERNEL
1078 MIPS Technologies R6000 and R6000A series processors. Note these
1079 processors are extremely rare and the support for them is incomplete.
1083 depends on SYS_HAS_CPU_NEVADA
1085 select CPU_SUPPORTS_32BIT_KERNEL
1086 select CPU_SUPPORTS_64BIT_KERNEL
1088 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1092 depends on EXPERIMENTAL
1093 depends on SYS_HAS_CPU_R8000
1095 select CPU_HAS_PREFETCH
1096 select CPU_SUPPORTS_64BIT_KERNEL
1098 MIPS Technologies R8000 processors. Note these processors are
1099 uncommon and the support for them is incomplete.
1103 depends on SYS_HAS_CPU_R10000
1105 select CPU_HAS_PREFETCH
1106 select CPU_SUPPORTS_32BIT_KERNEL
1107 select CPU_SUPPORTS_64BIT_KERNEL
1108 select CPU_SUPPORTS_HIGHMEM
1110 MIPS Technologies R10000-series processors.
1114 depends on SYS_HAS_CPU_RM7000
1116 select CPU_HAS_PREFETCH
1117 select CPU_SUPPORTS_32BIT_KERNEL
1118 select CPU_SUPPORTS_64BIT_KERNEL
1119 select CPU_SUPPORTS_HIGHMEM
1123 depends on SYS_HAS_CPU_RM9000
1125 select CPU_HAS_PREFETCH
1126 select CPU_SUPPORTS_32BIT_KERNEL
1127 select CPU_SUPPORTS_64BIT_KERNEL
1128 select CPU_SUPPORTS_HIGHMEM
1129 select WEAK_ORDERING
1133 depends on SYS_HAS_CPU_SB1
1135 select CPU_SUPPORTS_32BIT_KERNEL
1136 select CPU_SUPPORTS_64BIT_KERNEL
1137 select CPU_SUPPORTS_HIGHMEM
1138 select WEAK_ORDERING
1142 config SYS_HAS_CPU_LOONGSON2
1145 config SYS_HAS_CPU_MIPS32_R1
1148 config SYS_HAS_CPU_MIPS32_R2
1151 config SYS_HAS_CPU_MIPS64_R1
1154 config SYS_HAS_CPU_MIPS64_R2
1157 config SYS_HAS_CPU_R3000
1160 config SYS_HAS_CPU_TX39XX
1163 config SYS_HAS_CPU_VR41XX
1166 config SYS_HAS_CPU_R4300
1169 config SYS_HAS_CPU_R4X00
1172 config SYS_HAS_CPU_TX49XX
1175 config SYS_HAS_CPU_R5000
1178 config SYS_HAS_CPU_R5432
1181 config SYS_HAS_CPU_R6000
1184 config SYS_HAS_CPU_NEVADA
1187 config SYS_HAS_CPU_R8000
1190 config SYS_HAS_CPU_R10000
1193 config SYS_HAS_CPU_RM7000
1196 config SYS_HAS_CPU_RM9000
1199 config SYS_HAS_CPU_SB1
1203 # CPU may reorder R->R, R->W, W->R, W->W
1204 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1206 config WEAK_ORDERING
1210 # CPU may reorder reads and writes beyond LL/SC
1211 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1213 config WEAK_REORDERING_BEYOND_LLSC
1218 # These two indicate any level of the MIPS32 and MIPS64 architecture
1222 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1226 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1229 # These two indicate the revision of the architecture, either Release 1 or Release 2
1233 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1237 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1239 config SYS_SUPPORTS_32BIT_KERNEL
1241 config SYS_SUPPORTS_64BIT_KERNEL
1243 config CPU_SUPPORTS_32BIT_KERNEL
1245 config CPU_SUPPORTS_64BIT_KERNEL
1252 prompt "Kernel code model"
1254 You should only select this option if you have a workload that
1255 actually benefits from 64-bit processing or if your machine has
1256 large memory. You will only be presented a single option in this
1257 menu if your system does not support both 32-bit and 64-bit kernels.
1260 bool "32-bit kernel"
1261 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1264 Select this option if you want to build a 32-bit kernel.
1266 bool "64-bit kernel"
1267 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1269 Select this option if you want to build a 64-bit kernel.
1274 prompt "Kernel page size"
1275 default PAGE_SIZE_4KB
1277 config PAGE_SIZE_4KB
1280 This option select the standard 4kB Linux page size. On some
1281 R3000-family processors this is the only available page size. Using
1282 4kB page size will minimize memory consumption and is therefore
1283 recommended for low memory systems.
1285 config PAGE_SIZE_8KB
1287 depends on EXPERIMENTAL && CPU_R8000
1289 Using 8kB page size will result in higher performance kernel at
1290 the price of higher memory consumption. This option is available
1291 only on the R8000 processor. Not that at the time of this writing
1292 this option is still high experimental; there are also issues with
1293 compatibility of user applications.
1295 config PAGE_SIZE_16KB
1297 depends on !CPU_R3000 && !CPU_TX39XX
1299 Using 16kB page size will result in higher performance kernel at
1300 the price of higher memory consumption. This option is available on
1301 all non-R3000 family processors. Note that you will need a suitable
1302 Linux distribution to support this.
1304 config PAGE_SIZE_64KB
1306 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1308 Using 64kB page size will result in higher performance kernel at
1309 the price of higher memory consumption. This option is available on
1310 all non-R3000 family processor. Not that at the time of this
1311 writing this option is still high experimental.
1318 config IP22_CPU_SCACHE
1323 # Support for a MIPS32 / MIPS64 style S-caches
1325 config MIPS_CPU_SCACHE
1329 config R5000_CPU_SCACHE
1333 config RM7000_CPU_SCACHE
1337 config SIBYTE_DMA_PAGEOPS
1338 bool "Use DMA to clear/copy pages"
1341 Instead of using the CPU to zero and copy pages, use a Data Mover
1342 channel. These DMA channels are otherwise unused by the standard
1343 SiByte Linux port. Seems to give a small performance benefit.
1345 config CPU_HAS_PREFETCH
1349 prompt "MIPS MT options"
1351 config MIPS_MT_DISABLED
1352 bool "Disable multithreading support."
1354 Use this option if your workload can't take advantage of
1355 MIPS hardware multithreading support. On systems that don't have
1356 the option of an MT-enabled processor this option will be the only
1357 option in this menu.
1360 bool "Use 1 TC on each available VPE for SMP"
1361 depends on SYS_SUPPORTS_MULTITHREADING
1362 select CPU_MIPSR2_IRQ_VI
1363 select CPU_MIPSR2_IRQ_EI
1364 select CPU_MIPSR2_SRS
1366 select NR_CPUS_DEFAULT_2
1368 select SYS_SUPPORTS_SMP
1370 This is a kernel model which is also known a VSMP or lately
1371 has been marketesed into SMVP.
1374 bool "SMTC: Use all TCs on all VPEs for SMP"
1375 depends on CPU_MIPS32_R2
1376 #depends on CPU_MIPS64_R2 # once there is hardware ...
1377 depends on SYS_SUPPORTS_MULTITHREADING
1378 select GENERIC_CLOCKEVENTS_BROADCAST
1379 select CPU_MIPSR2_IRQ_VI
1380 select CPU_MIPSR2_IRQ_EI
1381 select CPU_MIPSR2_SRS
1383 select NR_CPUS_DEFAULT_8
1385 select SYS_SUPPORTS_SMP
1387 This is a kernel model which is known a SMTC or lately has been
1388 marketesed into SMVP.
1395 config SYS_SUPPORTS_MULTITHREADING
1398 config MIPS_MT_FPAFF
1399 bool "Dynamic FPU affinity for FP-intensive threads"
1401 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1403 config MIPS_VPE_LOADER
1404 bool "VPE loader support."
1405 depends on SYS_SUPPORTS_MULTITHREADING
1406 select CPU_MIPSR2_IRQ_VI
1407 select CPU_MIPSR2_IRQ_EI
1408 select CPU_MIPSR2_SRS
1411 Includes a loader for loading an elf relocatable object
1412 onto another VPE and running it.
1414 config MIPS_MT_SMTC_INSTANT_REPLAY
1415 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1416 depends on MIPS_MT_SMTC && !PREEMPT
1419 SMTC pseudo-interrupts between TCs are deferred and queued
1420 if the target TC is interrupt-inhibited (IXMT). In the first
1421 SMTC prototypes, these queued IPIs were serviced on return
1422 to user mode, or on entry into the kernel idle loop. The
1423 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1424 processing, which adds runtime overhead (hence the option to turn
1425 it off), but ensures that IPIs are handled promptly even under
1426 heavy I/O interrupt load.
1428 config MIPS_MT_SMTC_IM_BACKSTOP
1429 bool "Use per-TC register bits as backstop for inhibited IM bits"
1430 depends on MIPS_MT_SMTC
1433 To support multiple TC microthreads acting as "CPUs" within
1434 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1435 during interrupt handling. To support legacy drivers and interrupt
1436 controller management code, SMTC has a "backstop" to track and
1437 if necessary restore the interrupt mask. This has some performance
1438 impact on interrupt service overhead. Disable it only if you know
1441 config MIPS_MT_SMTC_IRQAFF
1442 bool "Support IRQ affinity API"
1443 depends on MIPS_MT_SMTC
1446 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1447 for SMTC Linux kernel. Requires platform support, of which
1448 an example can be found in the MIPS kernel i8259 and Malta
1449 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1450 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1451 interrupt dispatch, and should be used only if you know what
1454 config MIPS_VPE_LOADER_TOM
1455 bool "Load VPE program into memory hidden from linux"
1456 depends on MIPS_VPE_LOADER
1459 The loader can use memory that is present but has been hidden from
1460 Linux using the kernel command line option "mem=xxMB". It's up to
1461 you to ensure the amount you put in the option and the space your
1462 program requires is less or equal to the amount physically present.
1464 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1465 config MIPS_VPE_APSP_API
1466 bool "Enable support for AP/SP API (RTLX)"
1467 depends on MIPS_VPE_LOADER
1470 config MIPS_APSP_KSPD
1472 depends on MIPS_VPE_APSP_API
1475 KSPD is a kernel daemon that accepts syscall requests from the SP
1476 side, actions them and returns the results. It also handles the
1477 "exit" syscall notifying other kernel modules the SP program is
1478 exiting. You probably want to say yes here.
1480 config SB1_PASS_1_WORKAROUNDS
1482 depends on CPU_SB1_PASS_1
1485 config SB1_PASS_2_WORKAROUNDS
1487 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1490 config SB1_PASS_2_1_WORKAROUNDS
1492 depends on CPU_SB1 && CPU_SB1_PASS_2
1495 config 64BIT_PHYS_ADDR
1501 config CPU_HAS_SMARTMIPS
1502 depends on SYS_SUPPORTS_SMARTMIPS
1503 bool "Support for the SmartMIPS ASE"
1505 SmartMIPS is a extension of the MIPS32 architecture aimed at
1506 increased security at both hardware and software level for
1507 smartcards. Enabling this option will allow proper use of the
1508 SmartMIPS instructions by Linux applications. However a kernel with
1509 this option will not work on a MIPS core without SmartMIPS core. If
1510 you don't know you probably don't have SmartMIPS and should say N
1516 config 64BIT_CONTEXT
1517 bool "Save 64bit integer registers"
1518 depends on 32BIT && CPU_LOONGSON2
1520 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1521 registers can still be accessed as 64bit, mainly for multimedia
1522 instructions. We must have all 64bit save/restored to make sure
1523 those instructions to get correct result.
1526 # Vectored interrupt mode is an R2 feature
1528 config CPU_MIPSR2_IRQ_VI
1532 # Extended interrupt mode is an R2 feature
1534 config CPU_MIPSR2_IRQ_EI
1538 # Shadow registers are an R2 feature
1540 config CPU_MIPSR2_SRS
1545 depends on !CPU_R3000
1548 config GENERIC_CLOCKEVENTS_BROADCAST
1552 # Use the generic interrupt handling code in kernel/irq/:
1554 config GENERIC_HARDIRQS
1558 config GENERIC_IRQ_PROBE
1566 # - Highmem only makes sense for the 32-bit kernel.
1567 # - The current highmem code will only work properly on physically indexed
1568 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1569 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1570 # moment we protect the user and offer the highmem option only on machines
1571 # where it's known to be safe. This will not offer highmem on a few systems
1572 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1573 # indexed CPUs but we're playing safe.
1574 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1575 # know they might have memory configurations that could make use of highmem
1579 bool "High Memory Support"
1580 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1582 config CPU_SUPPORTS_HIGHMEM
1585 config SYS_SUPPORTS_HIGHMEM
1588 config SYS_SUPPORTS_SMARTMIPS
1591 config ARCH_FLATMEM_ENABLE
1595 config ARCH_DISCONTIGMEM_ENABLE
1597 default y if SGI_IP27
1599 Say Y to support efficient handling of discontiguous physical memory,
1600 for architectures which are either NUMA (Non-Uniform Memory Access)
1601 or have huge holes in the physical address space for other reasons.
1602 See <file:Documentation/vm/numa> for more.
1604 config ARCH_SPARSEMEM_ENABLE
1606 select SPARSEMEM_STATIC
1610 depends on SYS_SUPPORTS_NUMA
1612 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1613 Access). This option improves performance on systems with more
1614 than two nodes; on two node systems it is generally better to
1615 leave it disabled; on single node systems disable this option
1618 config SYS_SUPPORTS_NUMA
1624 depends on NEED_MULTIPLE_NODES
1629 bool "Multi-Processing support"
1630 depends on SYS_SUPPORTS_SMP
1633 This enables support for systems with more than one CPU. If you have
1634 a system with only one CPU, like most personal computers, say N. If
1635 you have a system with more than one CPU, say Y.
1637 If you say N here, the kernel will run on single and multiprocessor
1638 machines, but will use only one CPU of a multiprocessor machine. If
1639 you say Y here, the kernel will run on many, but not all,
1640 singleprocessor machines. On a singleprocessor machine, the kernel
1641 will run faster if you say N here.
1643 People using multiprocessor machines who say Y here should also say
1644 Y to "Enhanced Real Time Clock Support", below.
1646 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1647 available at <http://www.tldp.org/docs.html#howto>.
1649 If you don't know what to do here, say N.
1651 config SYS_SUPPORTS_SMP
1654 config NR_CPUS_DEFAULT_1
1657 config NR_CPUS_DEFAULT_2
1660 config NR_CPUS_DEFAULT_4
1663 config NR_CPUS_DEFAULT_8
1666 config NR_CPUS_DEFAULT_16
1669 config NR_CPUS_DEFAULT_32
1672 config NR_CPUS_DEFAULT_64
1676 int "Maximum number of CPUs (2-64)"
1677 range 1 64 if NR_CPUS_DEFAULT_1
1679 default "1" if NR_CPUS_DEFAULT_1
1680 default "2" if NR_CPUS_DEFAULT_2
1681 default "4" if NR_CPUS_DEFAULT_4
1682 default "8" if NR_CPUS_DEFAULT_8
1683 default "16" if NR_CPUS_DEFAULT_16
1684 default "32" if NR_CPUS_DEFAULT_32
1685 default "64" if NR_CPUS_DEFAULT_64
1687 This allows you to specify the maximum number of CPUs which this
1688 kernel will support. The maximum supported value is 32 for 32-bit
1689 kernel and 64 for 64-bit kernels; the minimum value which makes
1690 sense is 1 for Qemu (useful only for kernel debugging purposes)
1691 and 2 for all others.
1693 This is purely to save memory - each supported CPU adds
1694 approximately eight kilobytes to the kernel image. For best
1695 performance should round up your number of processors to the next
1699 # Timer Interrupt Frequency Configuration
1703 prompt "Timer frequency"
1706 Allows the configuration of the timer frequency.
1709 bool "48 HZ" if SYS_SUPPORTS_48HZ
1712 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1715 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1718 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1721 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1724 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1727 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1731 config SYS_SUPPORTS_48HZ
1734 config SYS_SUPPORTS_100HZ
1737 config SYS_SUPPORTS_128HZ
1740 config SYS_SUPPORTS_250HZ
1743 config SYS_SUPPORTS_256HZ
1746 config SYS_SUPPORTS_1000HZ
1749 config SYS_SUPPORTS_1024HZ
1752 config SYS_SUPPORTS_ARBIT_HZ
1754 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1755 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1756 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1757 !SYS_SUPPORTS_1024HZ
1762 default 100 if HZ_100
1763 default 128 if HZ_128
1764 default 250 if HZ_250
1765 default 256 if HZ_256
1766 default 1000 if HZ_1000
1767 default 1024 if HZ_1024
1769 source "kernel/Kconfig.preempt"
1771 config MIPS_INSANE_LARGE
1772 bool "Support for large 64-bit configurations"
1773 depends on CPU_R10000 && 64BIT
1775 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1776 previous 64-bit processors which only supported 40 bit / 1TB. If you
1777 need processes of more than 1TB virtual address space, say Y here.
1778 This will result in additional memory usage, so it is not
1779 recommended for normal users.
1782 bool "Kexec system call (EXPERIMENTAL)"
1783 depends on EXPERIMENTAL
1785 kexec is a system call that implements the ability to shutdown your
1786 current kernel, and to start another kernel. It is like a reboot
1787 but it is independent of the system firmware. And like a reboot
1788 you can start any kernel with it, not just Linux.
1790 The name comes from the similiarity to the exec system call.
1792 It is an ongoing process to be certain the hardware in a machine
1793 is properly shutdown, so do not be surprised if this code does not
1794 initially work for you. It may help to enable device hotplugging
1795 support. As of this writing the exact hardware interface is
1796 strongly in flux, so no good recommendation can be made.
1799 bool "Enable seccomp to safely compute untrusted bytecode"
1803 This kernel feature is useful for number crunching applications
1804 that may need to compute untrusted bytecode during their
1805 execution. By using pipes or other transports made available to
1806 the process as file descriptors supporting the read/write
1807 syscalls, it's possible to isolate those applications in
1808 their own address space using seccomp. Once seccomp is
1809 enabled via /proc/<pid>/seccomp, it cannot be disabled
1810 and the task is only allowed to execute a few safe syscalls
1811 defined by each seccomp mode.
1813 If unsure, say Y. Only embedded should say N here.
1817 config RWSEM_GENERIC_SPINLOCK
1821 config LOCKDEP_SUPPORT
1825 config STACKTRACE_SUPPORT
1829 source "init/Kconfig"
1831 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1839 bool "Support for PCI controller"
1840 depends on HW_HAS_PCI
1843 Find out whether you have a PCI motherboard. PCI is the name of a
1844 bus system, i.e. the way the CPU talks to the other stuff inside
1845 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1848 The PCI-HOWTO, available from
1849 <http://www.tldp.org/docs.html#howto>, contains valuable
1850 information about which PCI hardware does work under Linux and which
1856 source "drivers/pci/Kconfig"
1859 # ISA support is now enabled via select. Too many systems still have the one
1860 # or other ISA chip on the board that users don't know about so don't expect
1861 # users to choose the right thing ...
1868 depends on HW_HAS_EISA
1870 select GENERIC_ISA_DMA
1872 The Extended Industry Standard Architecture (EISA) bus was
1873 developed as an open alternative to the IBM MicroChannel bus.
1875 The EISA bus provided some of the features of the IBM MicroChannel
1876 bus while maintaining backward compatibility with cards made for
1877 the older ISA bus. The EISA bus saw limited use between 1988 and
1878 1995 when it was made obsolete by the PCI bus.
1880 Say Y here if you are building a kernel for an EISA-based machine.
1884 source "drivers/eisa/Kconfig"
1887 bool "TURBOchannel support"
1888 depends on MACH_DECSTATION
1890 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1891 processors. Documentation on writing device drivers for TurboChannel
1893 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1896 # bool "Access.Bus support"
1909 source "drivers/pcmcia/Kconfig"
1911 source "drivers/pci/hotplug/Kconfig"
1915 menu "Executable file formats"
1917 source "fs/Kconfig.binfmt"
1923 bool "Include IRIX binary compatibility"
1924 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1926 config MIPS32_COMPAT
1927 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1930 Select this option if you want Linux/MIPS 32-bit binary
1931 compatibility. Since all software available for Linux/MIPS is
1932 currently 32-bit you should say Y here.
1936 depends on MIPS32_COMPAT
1939 config SYSVIPC_COMPAT
1941 depends on COMPAT && SYSVIPC
1945 bool "Kernel support for o32 binaries"
1946 depends on MIPS32_COMPAT
1948 Select this option if you want to run o32 binaries. These are pure
1949 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1950 existing binaries are in this format.
1955 bool "Kernel support for n32 binaries"
1956 depends on MIPS32_COMPAT
1958 Select this option if you want to run n32 binaries. These are
1959 64-bit binaries using 32-bit quantities for addressing and certain
1960 data that would normally be 64-bit. They are used in special
1967 default y if MIPS32_O32 || MIPS32_N32
1971 menu "Power management options"
1973 source "kernel/power/Kconfig"
1977 source "net/Kconfig"
1979 source "drivers/Kconfig"
1983 source "arch/mips/oprofile/Kconfig"
1985 source "arch/mips/Kconfig.debug"
1987 source "security/Kconfig"
1989 source "crypto/Kconfig"
1991 source "lib/Kconfig"