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"
31 select SYS_HAS_CPU_RM9000
32 select SYS_SUPPORTS_32BIT_KERNEL
33 select SYS_SUPPORTS_BIG_ENDIAN
34 select SYS_SUPPORTS_KGDB
36 The eXcite is a smart camera platform manufactured by
37 Basler Vision Technologies AG.
39 config BASLER_EXCITE_PROTOTYPE
40 bool "Support for pre-release units"
41 depends on BASLER_EXCITE
44 Pre-series (prototype) units are different from later ones in
45 some ways. Select this option if you have one of these. Please
46 note that a kernel built with this option selected will not be
47 able to run on normal units.
50 bool "BCM47XX based boards"
52 select DMA_NONCOHERENT
55 select SYS_HAS_CPU_MIPS32_R1
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_LITTLE_ENDIAN
59 select SSB_DRIVER_MIPS
61 select SYS_HAS_EARLY_PRINTK
64 Support for BCM47XX based boards
70 select DMA_NONCOHERENT
76 select PCI_GT64XXX_PCI0
77 select SYS_HAS_CPU_NEVADA
78 select SYS_HAS_EARLY_PRINTK
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select GENERIC_HARDIRQS_NO__DO_IRQ
84 config MACH_DECSTATION
88 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_R3000
92 select SYS_HAS_CPU_R4X00
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SYS_SUPPORTS_128HZ
97 select SYS_SUPPORTS_256HZ
98 select SYS_SUPPORTS_1024HZ
100 This enables support for DEC's MIPS based workstations. For details
101 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
102 DECstation porting pages on <http://decstation.unix-ag.org/>.
104 If you have one of the following DECstation Models you definitely
105 want to choose R4xx0 for the CPU Type:
112 otherwise choose R3000.
115 bool "Jazz family of machines"
118 select ARCH_MAY_HAVE_PC_FDC
120 select GENERIC_ISA_DMA
126 select SYS_HAS_CPU_R4X00
127 select SYS_SUPPORTS_32BIT_KERNEL
128 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
129 select SYS_SUPPORTS_100HZ
130 select GENERIC_HARDIRQS_NO__DO_IRQ
132 This a family of machines based on the MIPS R4030 chipset which was
133 used by several vendors to build RISC/os and Windows NT workstations.
134 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
135 Olivetti M700-10 workstations.
138 bool "LASAT Networks platforms"
140 select DMA_NONCOHERENT
141 select SYS_HAS_EARLY_PRINTK
144 select PCI_GT64XXX_PCI0
146 select R5000_CPU_SCACHE
147 select SYS_HAS_CPU_R5000
148 select SYS_SUPPORTS_32BIT_KERNEL
149 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
150 select SYS_SUPPORTS_LITTLE_ENDIAN
151 select GENERIC_HARDIRQS_NO__DO_IRQ
154 bool "Lemote Fulong mini-PC"
155 select ARCH_SPARSEMEM_ENABLE
157 select SYS_HAS_CPU_LOONGSON2
158 select DMA_NONCOHERENT
161 select HAVE_STD_PC_SERIAL_PORT
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL
168 select SYS_SUPPORTS_LITTLE_ENDIAN
169 select SYS_SUPPORTS_HIGHMEM
170 select SYS_HAS_EARLY_PRINTK
171 select GENERIC_HARDIRQS_NO__DO_IRQ
172 select GENERIC_ISA_DMA_SUPPORT_BROKEN
175 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
179 bool "MIPS Atlas board"
182 select DMA_NONCOHERENT
183 select SYS_HAS_EARLY_PRINTK
186 select MIPS_BOARDS_GEN
188 select PCI_GT64XXX_PCI0
190 select RM7000_CPU_SCACHE
192 select SYS_HAS_CPU_MIPS32_R1
193 select SYS_HAS_CPU_MIPS32_R2
194 select SYS_HAS_CPU_MIPS64_R1
195 select SYS_HAS_CPU_NEVADA
196 select SYS_HAS_CPU_RM7000
197 select SYS_SUPPORTS_32BIT_KERNEL
198 select SYS_SUPPORTS_64BIT_KERNEL
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_LITTLE_ENDIAN
201 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
202 select SYS_SUPPORTS_SMARTMIPS
203 select GENERIC_HARDIRQS_NO__DO_IRQ
205 This enables support for the MIPS Technologies Atlas evaluation
209 bool "MIPS Malta board"
210 select ARCH_MAY_HAVE_PC_FDC
213 select DMA_NONCOHERENT
214 select GENERIC_ISA_DMA
219 select MIPS_BOARDS_GEN
221 select MIPS_CPU_SCACHE
222 select PCI_GT64XXX_PCI0
225 select SYS_HAS_CPU_MIPS32_R1
226 select SYS_HAS_CPU_MIPS32_R2
227 select SYS_HAS_CPU_MIPS64_R1
228 select SYS_HAS_CPU_NEVADA
229 select SYS_HAS_CPU_RM7000
230 select SYS_HAS_EARLY_PRINTK
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_64BIT_KERNEL
233 select SYS_SUPPORTS_BIG_ENDIAN
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select SYS_SUPPORTS_MULTITHREADING
236 select SYS_SUPPORTS_SMARTMIPS
238 This enables support for the MIPS Technologies Malta evaluation
242 bool "MIPS SEAD board"
245 select DMA_NONCOHERENT
246 select SYS_HAS_EARLY_PRINTK
247 select MIPS_BOARDS_GEN
248 select SYS_HAS_CPU_MIPS32_R1
249 select SYS_HAS_CPU_MIPS32_R2
250 select SYS_HAS_CPU_MIPS64_R1
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
253 select SYS_SUPPORTS_BIG_ENDIAN
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_SMARTMIPS
257 This enables support for the MIPS Technologies SEAD evaluation
261 bool 'MIPS simulator (MIPSsim)'
263 select DMA_NONCOHERENT
264 select SYS_HAS_EARLY_PRINTK
267 select SYS_HAS_CPU_MIPS32_R1
268 select SYS_HAS_CPU_MIPS32_R2
269 select SYS_HAS_EARLY_PRINTK
270 select SYS_SUPPORTS_32BIT_KERNEL
271 select SYS_SUPPORTS_BIG_ENDIAN
272 select SYS_SUPPORTS_MULTITHREADING
273 select SYS_SUPPORTS_LITTLE_ENDIAN
275 This option enables support for MIPS Technologies MIPSsim software
279 bool "NEC EMMA2RH Mark-eins"
281 select DMA_NONCOHERENT
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_SUPPORTS_LITTLE_ENDIAN
288 select SYS_HAS_CPU_R5000
290 This enables support for the R5432-based NEC Mark-eins
291 boards with R5500 CPU.
294 bool "NEC VR4100 series based machines"
296 select SYS_HAS_CPU_VR41XX
297 select GENERIC_HARDIRQS_NO__DO_IRQ
300 bool "Philips PNX8550 based JBS board"
302 select SYS_SUPPORTS_LITTLE_ENDIAN
304 config PNX8550_STB810
305 bool "Philips PNX8550 based STB810 board"
307 select SYS_SUPPORTS_LITTLE_ENDIAN
310 bool "PMC-Sierra MSP chipsets"
311 depends on EXPERIMENTAL
312 select DMA_NONCOHERENT
314 select NO_EXCEPT_FILL
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_BIG_ENDIAN
320 select SYS_SUPPORTS_KGDB
323 select SERIAL_8250_CONSOLE
325 This adds support for the PMC-Sierra family of Multi-Service
326 Processor System-On-A-Chips. These parts include a number
327 of integrated peripherals, interfaces and DSPs in addition to
328 a variety of MIPS cores.
331 bool "PMC-Sierra Yosemite eval board"
339 select SYS_HAS_CPU_RM9000
340 select SYS_HAS_EARLY_PRINTK
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_BIG_ENDIAN
344 select SYS_SUPPORTS_HIGHMEM
345 select SYS_SUPPORTS_KGDB
346 select SYS_SUPPORTS_SMP
348 Yosemite is an evaluation board for the RM9000x2 processor
349 manufactured by PMC-Sierra.
355 select GENERIC_ISA_DMA
356 select HAVE_STD_PC_SERIAL_PORT
363 select SYS_HAS_CPU_MIPS32_R1
364 select SYS_HAS_EARLY_PRINTK
365 select SYS_SUPPORTS_32BIT_KERNEL
366 select SYS_SUPPORTS_BIG_ENDIAN
367 select SYS_SUPPORTS_LITTLE_ENDIAN
368 select GENERIC_HARDIRQS_NO__DO_IRQ
369 select NR_CPUS_DEFAULT_1
370 select SYS_SUPPORTS_SMP
372 Qemu is a software emulator which among other architectures also
373 can simulate a MIPS32 4Kc system. This patch adds support for the
374 system architecture that currently is being simulated by Qemu. It
375 will eventually be removed again when Qemu has the capability to
376 simulate actual MIPS hardware platforms. More information on Qemu
377 can be found at http://www.linux-mips.org/wiki/Qemu.
380 bool "SGI IP22 (Indy/Indigo2)"
385 select DMA_NONCOHERENT
388 select IP22_CPU_SCACHE
390 select GENERIC_ISA_DMA_SUPPORT_BROKEN
392 select SYS_HAS_CPU_R4X00
393 select SYS_HAS_CPU_R5000
394 select SYS_HAS_EARLY_PRINTK
395 select SYS_SUPPORTS_32BIT_KERNEL
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
399 This are the SGI Indy, Challenge S and Indigo2, as well as certain
400 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
401 that runs on these, say Y here.
404 bool "SGI IP27 (Origin200/2000)"
409 select SYS_HAS_EARLY_PRINTK
411 select NR_CPUS_DEFAULT_64
412 select SYS_HAS_CPU_R10000
413 select SYS_SUPPORTS_64BIT_KERNEL
414 select SYS_SUPPORTS_BIG_ENDIAN
415 select SYS_SUPPORTS_KGDB
416 select SYS_SUPPORTS_NUMA
417 select SYS_SUPPORTS_SMP
418 select GENERIC_HARDIRQS_NO__DO_IRQ
420 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
421 workstations. To compile a Linux kernel that runs on these, say Y
430 select DMA_NONCOHERENT
433 select R5000_CPU_SCACHE
434 select RM7000_CPU_SCACHE
435 select SYS_HAS_CPU_R5000
436 select SYS_HAS_CPU_R10000 if BROKEN
437 select SYS_HAS_CPU_RM7000
438 select SYS_HAS_CPU_NEVADA
439 select SYS_SUPPORTS_64BIT_KERNEL
440 select SYS_SUPPORTS_BIG_ENDIAN
442 If you want this kernel to run on SGI O2 workstation, say Y here.
445 bool "Sibyte BCM91120C-CRhine"
446 depends on EXPERIMENTAL
449 select SIBYTE_BCM1120
451 select SYS_HAS_CPU_SB1
452 select SYS_SUPPORTS_BIG_ENDIAN
453 select SYS_SUPPORTS_LITTLE_ENDIAN
456 bool "Sibyte BCM91120x-Carmel"
457 depends on EXPERIMENTAL
460 select SIBYTE_BCM1120
462 select SYS_HAS_CPU_SB1
463 select SYS_SUPPORTS_BIG_ENDIAN
464 select SYS_SUPPORTS_LITTLE_ENDIAN
467 bool "Sibyte BCM91125C-CRhone"
468 depends on EXPERIMENTAL
471 select SIBYTE_BCM1125
473 select SYS_HAS_CPU_SB1
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_HIGHMEM
476 select SYS_SUPPORTS_LITTLE_ENDIAN
479 bool "Sibyte BCM91125E-Rhone"
480 depends on EXPERIMENTAL
483 select SIBYTE_BCM1125H
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_LITTLE_ENDIAN
490 bool "Sibyte BCM91250A-SWARM"
493 select NR_CPUS_DEFAULT_2
496 select SYS_HAS_CPU_SB1
497 select SYS_SUPPORTS_BIG_ENDIAN
498 select SYS_SUPPORTS_HIGHMEM
499 select SYS_SUPPORTS_KGDB
500 select SYS_SUPPORTS_LITTLE_ENDIAN
502 config SIBYTE_LITTLESUR
503 bool "Sibyte BCM91250C2-LittleSur"
504 depends on EXPERIMENTAL
507 select NR_CPUS_DEFAULT_2
510 select SYS_HAS_CPU_SB1
511 select SYS_SUPPORTS_BIG_ENDIAN
512 select SYS_SUPPORTS_HIGHMEM
513 select SYS_SUPPORTS_LITTLE_ENDIAN
515 config SIBYTE_SENTOSA
516 bool "Sibyte BCM91250E-Sentosa"
517 depends on EXPERIMENTAL
520 select NR_CPUS_DEFAULT_2
523 select SYS_HAS_CPU_SB1
524 select SYS_SUPPORTS_BIG_ENDIAN
525 select SYS_SUPPORTS_LITTLE_ENDIAN
527 config SIBYTE_PTSWARM
528 bool "Sibyte BCM91250PT-PTSWARM"
529 depends on EXPERIMENTAL
532 select NR_CPUS_DEFAULT_2
535 select SYS_HAS_CPU_SB1
536 select SYS_SUPPORTS_BIG_ENDIAN
537 select SYS_SUPPORTS_HIGHMEM
538 select SYS_SUPPORTS_LITTLE_ENDIAN
541 bool "Sibyte BCM91480B-BigSur"
544 select NR_CPUS_DEFAULT_4
545 select SIBYTE_BCM1x80
547 select SYS_HAS_CPU_SB1
548 select SYS_SUPPORTS_BIG_ENDIAN
549 select SYS_SUPPORTS_HIGHMEM
550 select SYS_SUPPORTS_LITTLE_ENDIAN
553 bool "SNI RM200/300/400"
554 select ARC if CPU_LITTLE_ENDIAN
555 select ARC32 if CPU_LITTLE_ENDIAN
556 select ARCH_MAY_HAVE_PC_FDC
559 select DMA_NONCOHERENT
560 select GENERIC_ISA_DMA
568 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
569 select SYS_HAS_CPU_R4X00
570 select SYS_HAS_CPU_R5000
571 select SYS_HAS_CPU_R10000
572 select R5000_CPU_SCACHE
573 select SYS_HAS_EARLY_PRINTK
574 select SYS_SUPPORTS_32BIT_KERNEL
575 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
576 select SYS_SUPPORTS_BIG_ENDIAN
577 select SYS_SUPPORTS_HIGHMEM
578 select SYS_SUPPORTS_LITTLE_ENDIAN
580 The SNI RM200/300/400 are MIPS-based machines manufactured by
581 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
582 Technology and now in turn merged with Fujitsu. Say Y here to
583 support this machine type.
585 config TOSHIBA_JMR3927
586 bool "Toshiba JMR-TX3927 board"
588 select DMA_NONCOHERENT
593 select SYS_HAS_CPU_TX39XX
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_LITTLE_ENDIAN
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select GENERIC_HARDIRQS_NO__DO_IRQ
599 config TOSHIBA_RBTX4927
600 bool "Toshiba RBTX49[23]7 board"
603 select DMA_NONCOHERENT
604 select HAS_TXX9_SERIAL
608 select I8259 if TOSHIBA_FPCIB0
610 select SYS_HAS_CPU_TX49XX
611 select SYS_SUPPORTS_32BIT_KERNEL
612 select SYS_SUPPORTS_64BIT_KERNEL
613 select SYS_SUPPORTS_LITTLE_ENDIAN
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_KGDB
616 select GENERIC_HARDIRQS_NO__DO_IRQ
618 This Toshiba board is based on the TX4927 processor. Say Y here to
619 support this machine type
621 config TOSHIBA_RBTX4938
622 bool "Toshiba RBTX4938 board"
625 select DMA_NONCOHERENT
626 select HAS_TXX9_SERIAL
631 select SYS_HAS_CPU_TX49XX
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_LITTLE_ENDIAN
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_KGDB
636 select GENERIC_HARDIRQS_NO__DO_IRQ
639 This Toshiba board is based on the TX4938 processor. Say Y here to
640 support this machine type
643 bool "Wind River PPMC board"
647 select DMA_NONCOHERENT
649 select PCI_GT64XXX_PCI0
651 select SYS_HAS_CPU_MIPS32_R1
652 select SYS_HAS_CPU_MIPS32_R2
653 select SYS_HAS_CPU_MIPS64_R1
654 select SYS_HAS_CPU_NEVADA
655 select SYS_HAS_CPU_RM7000
656 select SYS_SUPPORTS_32BIT_KERNEL
657 select SYS_SUPPORTS_64BIT_KERNEL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_LITTLE_ENDIAN
661 This enables support for the Wind River MIPS32 4KC PPMC evaluation
662 board, which is based on GT64120 bridge chip.
666 source "arch/mips/au1000/Kconfig"
667 source "arch/mips/jazz/Kconfig"
668 source "arch/mips/lasat/Kconfig"
669 source "arch/mips/pmc-sierra/Kconfig"
670 source "arch/mips/sgi-ip27/Kconfig"
671 source "arch/mips/sibyte/Kconfig"
672 source "arch/mips/tx4927/Kconfig"
673 source "arch/mips/tx4938/Kconfig"
674 source "arch/mips/vr41xx/Kconfig"
678 config RWSEM_GENERIC_SPINLOCK
682 config RWSEM_XCHGADD_ALGORITHM
685 config ARCH_HAS_ILOG2_U32
689 config ARCH_HAS_ILOG2_U64
693 config GENERIC_FIND_NEXT_BIT
697 config GENERIC_HWEIGHT
701 config GENERIC_CALIBRATE_DELAY
705 config GENERIC_CLOCKEVENTS
713 config GENERIC_CMOS_UPDATE
717 config SCHED_NO_NO_OMIT_FRAME_POINTER
721 config GENERIC_HARDIRQS_NO__DO_IRQ
726 # Select some configuration options automatically based on user selections.
731 config ARCH_MAY_HAVE_PC_FDC
769 select DMA_NEED_PCI_MAP_STATE
771 config DMA_NONCOHERENT
773 select DMA_NEED_PCI_MAP_STATE
775 config DMA_NEED_PCI_MAP_STATE
779 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
780 depends on SYS_HAS_EARLY_PRINTK
783 This option enables special console drivers which allow the kernel
784 to print messages very early in the bootup process.
786 This is useful for kernel debugging when your machine crashes very
787 early before the console code is initialized. For normal operation,
788 it is not recommended because it looks ugly on some machines and
789 doesn't cooperate with an X server. You should normally say N here,
790 unless you want to debug such a crash.
792 config SYS_HAS_EARLY_PRINTK
811 config MIPS_DISABLE_OBSOLETE_IDE
817 config GENERIC_ISA_DMA
819 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
821 config GENERIC_ISA_DMA_SUPPORT_BROKEN
823 select GENERIC_ISA_DMA
829 # Endianess selection. Sufficiently obscure so many users don't know what to
830 # answer,so we try hard to limit the available choices. Also the use of a
831 # choice statement should be more obvious to the user.
834 prompt "Endianess selection"
836 Some MIPS machines can be configured for either little or big endian
837 byte order. These modes require different kernels and a different
838 Linux distribution. In general there is one preferred byteorder for a
839 particular system but some systems are just as commonly used in the
840 one or the other endianness.
842 config CPU_BIG_ENDIAN
844 depends on SYS_SUPPORTS_BIG_ENDIAN
846 config CPU_LITTLE_ENDIAN
848 depends on SYS_SUPPORTS_LITTLE_ENDIAN
853 config SYS_SUPPORTS_APM_EMULATION
856 config SYS_SUPPORTS_BIG_ENDIAN
859 config SYS_SUPPORTS_LITTLE_ENDIAN
883 config MIPS_BOARDS_GEN
886 config PCI_GT64XXX_PCI0
889 config NO_EXCEPT_FILL
894 select HAS_TXX9_SERIAL
906 select DMA_NONCOHERENT
908 select SYS_HAS_CPU_MIPS32_R1
909 select SYS_HAS_EARLY_PRINTK
910 select SYS_SUPPORTS_32BIT_KERNEL
911 select GENERIC_HARDIRQS_NO__DO_IRQ
912 select SYS_SUPPORTS_KGDB
932 config MIPS_L1_CACHE_SHIFT
934 default "4" if MACH_DECSTATION
935 default "7" if SGI_IP27 || SNI_RM
936 default "4" if PMC_MSP4200_EVAL
939 config HAVE_STD_PC_SERIAL_PORT
943 bool "ARC console support"
944 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
948 depends on MACH_JAZZ || SNI_RM || SGI_IP32
953 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
964 source "kernel/time/Kconfig"
972 depends on SYS_HAS_CPU_LOONGSON2
973 select CPU_SUPPORTS_32BIT_KERNEL
974 select CPU_SUPPORTS_64BIT_KERNEL
975 select CPU_SUPPORTS_HIGHMEM
977 The Loongson 2E processor implements the MIPS III instruction set
978 with many extensions.
981 bool "MIPS32 Release 1"
982 depends on SYS_HAS_CPU_MIPS32_R1
984 select CPU_HAS_PREFETCH
985 select CPU_SUPPORTS_32BIT_KERNEL
986 select CPU_SUPPORTS_HIGHMEM
988 Choose this option to build a kernel for release 1 or later of the
989 MIPS32 architecture. Most modern embedded systems with a 32-bit
990 MIPS processor are based on a MIPS32 processor. If you know the
991 specific type of processor in your system, choose those that one
992 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
993 Release 2 of the MIPS32 architecture is available since several
994 years so chances are you even have a MIPS32 Release 2 processor
995 in which case you should choose CPU_MIPS32_R2 instead for better
999 bool "MIPS32 Release 2"
1000 depends on SYS_HAS_CPU_MIPS32_R2
1002 select CPU_HAS_PREFETCH
1003 select CPU_SUPPORTS_32BIT_KERNEL
1004 select CPU_SUPPORTS_HIGHMEM
1006 Choose this option to build a kernel for release 2 or later of the
1007 MIPS32 architecture. Most modern embedded systems with a 32-bit
1008 MIPS processor are based on a MIPS32 processor. If you know the
1009 specific type of processor in your system, choose those that one
1010 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1012 config CPU_MIPS64_R1
1013 bool "MIPS64 Release 1"
1014 depends on SYS_HAS_CPU_MIPS64_R1
1016 select CPU_HAS_PREFETCH
1017 select CPU_SUPPORTS_32BIT_KERNEL
1018 select CPU_SUPPORTS_64BIT_KERNEL
1019 select CPU_SUPPORTS_HIGHMEM
1021 Choose this option to build a kernel for release 1 or later of the
1022 MIPS64 architecture. Many modern embedded systems with a 64-bit
1023 MIPS processor are based on a MIPS64 processor. If you know the
1024 specific type of processor in your system, choose those that one
1025 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1026 Release 2 of the MIPS64 architecture is available since several
1027 years so chances are you even have a MIPS64 Release 2 processor
1028 in which case you should choose CPU_MIPS64_R2 instead for better
1031 config CPU_MIPS64_R2
1032 bool "MIPS64 Release 2"
1033 depends on SYS_HAS_CPU_MIPS64_R2
1035 select CPU_HAS_PREFETCH
1036 select CPU_SUPPORTS_32BIT_KERNEL
1037 select CPU_SUPPORTS_64BIT_KERNEL
1038 select CPU_SUPPORTS_HIGHMEM
1040 Choose this option to build a kernel for release 2 or later of the
1041 MIPS64 architecture. Many modern embedded systems with a 64-bit
1042 MIPS processor are based on a MIPS64 processor. If you know the
1043 specific type of processor in your system, choose those that one
1044 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1048 depends on SYS_HAS_CPU_R3000
1050 select CPU_SUPPORTS_32BIT_KERNEL
1051 select CPU_SUPPORTS_HIGHMEM
1053 Please make sure to pick the right CPU type. Linux/MIPS is not
1054 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1055 *not* work on R4000 machines and vice versa. However, since most
1056 of the supported machines have an R4000 (or similar) CPU, R4x00
1057 might be a safe bet. If the resulting kernel does not work,
1058 try to recompile with R3000.
1062 depends on SYS_HAS_CPU_TX39XX
1063 select CPU_SUPPORTS_32BIT_KERNEL
1067 depends on SYS_HAS_CPU_VR41XX
1068 select CPU_SUPPORTS_32BIT_KERNEL
1069 select CPU_SUPPORTS_64BIT_KERNEL
1071 The options selects support for the NEC VR4100 series of processors.
1072 Only choose this option if you have one of these processors as a
1073 kernel built with this option will not run on any other type of
1074 processor or vice versa.
1078 depends on SYS_HAS_CPU_R4300
1080 select CPU_SUPPORTS_32BIT_KERNEL
1081 select CPU_SUPPORTS_64BIT_KERNEL
1083 MIPS Technologies R4300-series processors.
1087 depends on SYS_HAS_CPU_R4X00
1089 select CPU_SUPPORTS_32BIT_KERNEL
1090 select CPU_SUPPORTS_64BIT_KERNEL
1092 MIPS Technologies R4000-series processors other than 4300, including
1093 the R4000, R4400, R4600, and 4700.
1097 depends on SYS_HAS_CPU_TX49XX
1099 select CPU_HAS_PREFETCH
1100 select CPU_SUPPORTS_32BIT_KERNEL
1101 select CPU_SUPPORTS_64BIT_KERNEL
1105 depends on SYS_HAS_CPU_R5000
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_64BIT_KERNEL
1110 MIPS Technologies R5000-series processors other than the Nevada.
1114 depends on SYS_HAS_CPU_R5432
1116 select CPU_SUPPORTS_32BIT_KERNEL
1117 select CPU_SUPPORTS_64BIT_KERNEL
1121 depends on EXPERIMENTAL
1123 depends on SYS_HAS_CPU_R6000
1124 select CPU_SUPPORTS_32BIT_KERNEL
1126 MIPS Technologies R6000 and R6000A series processors. Note these
1127 processors are extremely rare and the support for them is incomplete.
1131 depends on SYS_HAS_CPU_NEVADA
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_64BIT_KERNEL
1136 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1140 depends on EXPERIMENTAL
1141 depends on SYS_HAS_CPU_R8000
1143 select CPU_HAS_PREFETCH
1144 select CPU_SUPPORTS_64BIT_KERNEL
1146 MIPS Technologies R8000 processors. Note these processors are
1147 uncommon and the support for them is incomplete.
1151 depends on SYS_HAS_CPU_R10000
1153 select CPU_HAS_PREFETCH
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_64BIT_KERNEL
1156 select CPU_SUPPORTS_HIGHMEM
1158 MIPS Technologies R10000-series processors.
1162 depends on SYS_HAS_CPU_RM7000
1164 select CPU_HAS_PREFETCH
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_64BIT_KERNEL
1167 select CPU_SUPPORTS_HIGHMEM
1171 depends on SYS_HAS_CPU_RM9000
1173 select CPU_HAS_PREFETCH
1174 select CPU_SUPPORTS_32BIT_KERNEL
1175 select CPU_SUPPORTS_64BIT_KERNEL
1176 select CPU_SUPPORTS_HIGHMEM
1177 select WEAK_ORDERING
1181 depends on SYS_HAS_CPU_SB1
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_64BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1186 select WEAK_ORDERING
1190 config SYS_HAS_CPU_LOONGSON2
1193 config SYS_HAS_CPU_MIPS32_R1
1196 config SYS_HAS_CPU_MIPS32_R2
1199 config SYS_HAS_CPU_MIPS64_R1
1202 config SYS_HAS_CPU_MIPS64_R2
1205 config SYS_HAS_CPU_R3000
1208 config SYS_HAS_CPU_TX39XX
1211 config SYS_HAS_CPU_VR41XX
1214 config SYS_HAS_CPU_R4300
1217 config SYS_HAS_CPU_R4X00
1220 config SYS_HAS_CPU_TX49XX
1223 config SYS_HAS_CPU_R5000
1226 config SYS_HAS_CPU_R5432
1229 config SYS_HAS_CPU_R6000
1232 config SYS_HAS_CPU_NEVADA
1235 config SYS_HAS_CPU_R8000
1238 config SYS_HAS_CPU_R10000
1241 config SYS_HAS_CPU_RM7000
1244 config SYS_HAS_CPU_RM9000
1247 config SYS_HAS_CPU_SB1
1251 # CPU may reorder R->R, R->W, W->R, W->W
1252 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1254 config WEAK_ORDERING
1258 # CPU may reorder reads and writes beyond LL/SC
1259 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1261 config WEAK_REORDERING_BEYOND_LLSC
1266 # These two indicate any level of the MIPS32 and MIPS64 architecture
1270 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1274 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1277 # These two indicate the revision of the architecture, either Release 1 or Release 2
1281 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1285 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1287 config SYS_SUPPORTS_32BIT_KERNEL
1289 config SYS_SUPPORTS_64BIT_KERNEL
1291 config CPU_SUPPORTS_32BIT_KERNEL
1293 config CPU_SUPPORTS_64BIT_KERNEL
1300 prompt "Kernel code model"
1302 You should only select this option if you have a workload that
1303 actually benefits from 64-bit processing or if your machine has
1304 large memory. You will only be presented a single option in this
1305 menu if your system does not support both 32-bit and 64-bit kernels.
1308 bool "32-bit kernel"
1309 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1312 Select this option if you want to build a 32-bit kernel.
1314 bool "64-bit kernel"
1315 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1317 Select this option if you want to build a 64-bit kernel.
1322 prompt "Kernel page size"
1323 default PAGE_SIZE_4KB
1325 config PAGE_SIZE_4KB
1328 This option select the standard 4kB Linux page size. On some
1329 R3000-family processors this is the only available page size. Using
1330 4kB page size will minimize memory consumption and is therefore
1331 recommended for low memory systems.
1333 config PAGE_SIZE_8KB
1335 depends on EXPERIMENTAL && CPU_R8000
1337 Using 8kB page size will result in higher performance kernel at
1338 the price of higher memory consumption. This option is available
1339 only on the R8000 processor. Not that at the time of this writing
1340 this option is still high experimental; there are also issues with
1341 compatibility of user applications.
1343 config PAGE_SIZE_16KB
1345 depends on !CPU_R3000 && !CPU_TX39XX
1347 Using 16kB page size will result in higher performance kernel at
1348 the price of higher memory consumption. This option is available on
1349 all non-R3000 family processors. Note that you will need a suitable
1350 Linux distribution to support this.
1352 config PAGE_SIZE_64KB
1354 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1356 Using 64kB page size will result in higher performance kernel at
1357 the price of higher memory consumption. This option is available on
1358 all non-R3000 family processor. Not that at the time of this
1359 writing this option is still high experimental.
1366 config IP22_CPU_SCACHE
1371 # Support for a MIPS32 / MIPS64 style S-caches
1373 config MIPS_CPU_SCACHE
1377 config R5000_CPU_SCACHE
1381 config RM7000_CPU_SCACHE
1385 config SIBYTE_DMA_PAGEOPS
1386 bool "Use DMA to clear/copy pages"
1389 Instead of using the CPU to zero and copy pages, use a Data Mover
1390 channel. These DMA channels are otherwise unused by the standard
1391 SiByte Linux port. Seems to give a small performance benefit.
1393 config CPU_HAS_PREFETCH
1397 prompt "MIPS MT options"
1399 config MIPS_MT_DISABLED
1400 bool "Disable multithreading support."
1402 Use this option if your workload can't take advantage of
1403 MIPS hardware multithreading support. On systems that don't have
1404 the option of an MT-enabled processor this option will be the only
1405 option in this menu.
1408 bool "Use 1 TC on each available VPE for SMP"
1409 depends on SYS_SUPPORTS_MULTITHREADING
1410 select CPU_MIPSR2_IRQ_VI
1411 select CPU_MIPSR2_IRQ_EI
1413 select NR_CPUS_DEFAULT_2
1415 select SYS_SUPPORTS_SMP
1417 This is a kernel model which is also known a VSMP or lately
1418 has been marketesed into SMVP.
1421 bool "SMTC: Use all TCs on all VPEs for SMP"
1422 depends on CPU_MIPS32_R2
1423 #depends on CPU_MIPS64_R2 # once there is hardware ...
1424 depends on SYS_SUPPORTS_MULTITHREADING
1425 select GENERIC_CLOCKEVENTS_BROADCAST
1426 select CPU_MIPSR2_IRQ_VI
1427 select CPU_MIPSR2_IRQ_EI
1429 select NR_CPUS_DEFAULT_8
1431 select SYS_SUPPORTS_SMP
1433 This is a kernel model which is known a SMTC or lately has been
1434 marketesed into SMVP.
1441 config SYS_SUPPORTS_MULTITHREADING
1444 config MIPS_MT_FPAFF
1445 bool "Dynamic FPU affinity for FP-intensive threads"
1447 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1449 config MIPS_VPE_LOADER
1450 bool "VPE loader support."
1451 depends on SYS_SUPPORTS_MULTITHREADING
1452 select CPU_MIPSR2_IRQ_VI
1453 select CPU_MIPSR2_IRQ_EI
1456 Includes a loader for loading an elf relocatable object
1457 onto another VPE and running it.
1459 config MIPS_MT_SMTC_INSTANT_REPLAY
1460 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1461 depends on MIPS_MT_SMTC && !PREEMPT
1464 SMTC pseudo-interrupts between TCs are deferred and queued
1465 if the target TC is interrupt-inhibited (IXMT). In the first
1466 SMTC prototypes, these queued IPIs were serviced on return
1467 to user mode, or on entry into the kernel idle loop. The
1468 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1469 processing, which adds runtime overhead (hence the option to turn
1470 it off), but ensures that IPIs are handled promptly even under
1471 heavy I/O interrupt load.
1473 config MIPS_MT_SMTC_IM_BACKSTOP
1474 bool "Use per-TC register bits as backstop for inhibited IM bits"
1475 depends on MIPS_MT_SMTC
1478 To support multiple TC microthreads acting as "CPUs" within
1479 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1480 during interrupt handling. To support legacy drivers and interrupt
1481 controller management code, SMTC has a "backstop" to track and
1482 if necessary restore the interrupt mask. This has some performance
1483 impact on interrupt service overhead. Disable it only if you know
1486 config MIPS_MT_SMTC_IRQAFF
1487 bool "Support IRQ affinity API"
1488 depends on MIPS_MT_SMTC
1491 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1492 for SMTC Linux kernel. Requires platform support, of which
1493 an example can be found in the MIPS kernel i8259 and Malta
1494 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1495 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1496 interrupt dispatch, and should be used only if you know what
1499 config MIPS_VPE_LOADER_TOM
1500 bool "Load VPE program into memory hidden from linux"
1501 depends on MIPS_VPE_LOADER
1504 The loader can use memory that is present but has been hidden from
1505 Linux using the kernel command line option "mem=xxMB". It's up to
1506 you to ensure the amount you put in the option and the space your
1507 program requires is less or equal to the amount physically present.
1509 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1510 config MIPS_VPE_APSP_API
1511 bool "Enable support for AP/SP API (RTLX)"
1512 depends on MIPS_VPE_LOADER
1515 config MIPS_APSP_KSPD
1517 depends on MIPS_VPE_APSP_API
1520 KSPD is a kernel daemon that accepts syscall requests from the SP
1521 side, actions them and returns the results. It also handles the
1522 "exit" syscall notifying other kernel modules the SP program is
1523 exiting. You probably want to say yes here.
1525 config SB1_PASS_1_WORKAROUNDS
1527 depends on CPU_SB1_PASS_1
1530 config SB1_PASS_2_WORKAROUNDS
1532 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1535 config SB1_PASS_2_1_WORKAROUNDS
1537 depends on CPU_SB1 && CPU_SB1_PASS_2
1540 config 64BIT_PHYS_ADDR
1546 config CPU_HAS_SMARTMIPS
1547 depends on SYS_SUPPORTS_SMARTMIPS
1548 bool "Support for the SmartMIPS ASE"
1550 SmartMIPS is a extension of the MIPS32 architecture aimed at
1551 increased security at both hardware and software level for
1552 smartcards. Enabling this option will allow proper use of the
1553 SmartMIPS instructions by Linux applications. However a kernel with
1554 this option will not work on a MIPS core without SmartMIPS core. If
1555 you don't know you probably don't have SmartMIPS and should say N
1561 config 64BIT_CONTEXT
1562 bool "Save 64bit integer registers"
1563 depends on 32BIT && CPU_LOONGSON2
1565 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1566 registers can still be accessed as 64bit, mainly for multimedia
1567 instructions. We must have all 64bit save/restored to make sure
1568 those instructions to get correct result.
1571 # Vectored interrupt mode is an R2 feature
1573 config CPU_MIPSR2_IRQ_VI
1577 # Extended interrupt mode is an R2 feature
1579 config CPU_MIPSR2_IRQ_EI
1584 depends on !CPU_R3000
1587 config GENERIC_CLOCKEVENTS_BROADCAST
1591 # Use the generic interrupt handling code in kernel/irq/:
1593 config GENERIC_HARDIRQS
1597 config GENERIC_IRQ_PROBE
1605 # - Highmem only makes sense for the 32-bit kernel.
1606 # - The current highmem code will only work properly on physically indexed
1607 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1608 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1609 # moment we protect the user and offer the highmem option only on machines
1610 # where it's known to be safe. This will not offer highmem on a few systems
1611 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1612 # indexed CPUs but we're playing safe.
1613 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1614 # know they might have memory configurations that could make use of highmem
1618 bool "High Memory Support"
1619 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1621 config CPU_SUPPORTS_HIGHMEM
1624 config SYS_SUPPORTS_HIGHMEM
1627 config SYS_SUPPORTS_SMARTMIPS
1630 config ARCH_FLATMEM_ENABLE
1634 config ARCH_DISCONTIGMEM_ENABLE
1636 default y if SGI_IP27
1638 Say Y to support efficient handling of discontiguous physical memory,
1639 for architectures which are either NUMA (Non-Uniform Memory Access)
1640 or have huge holes in the physical address space for other reasons.
1641 See <file:Documentation/vm/numa> for more.
1643 config ARCH_SPARSEMEM_ENABLE
1645 select SPARSEMEM_STATIC
1649 depends on SYS_SUPPORTS_NUMA
1651 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1652 Access). This option improves performance on systems with more
1653 than two nodes; on two node systems it is generally better to
1654 leave it disabled; on single node systems disable this option
1657 config SYS_SUPPORTS_NUMA
1663 depends on NEED_MULTIPLE_NODES
1668 bool "Multi-Processing support"
1669 depends on SYS_SUPPORTS_SMP
1672 This enables support for systems with more than one CPU. If you have
1673 a system with only one CPU, like most personal computers, say N. If
1674 you have a system with more than one CPU, say Y.
1676 If you say N here, the kernel will run on single and multiprocessor
1677 machines, but will use only one CPU of a multiprocessor machine. If
1678 you say Y here, the kernel will run on many, but not all,
1679 singleprocessor machines. On a singleprocessor machine, the kernel
1680 will run faster if you say N here.
1682 People using multiprocessor machines who say Y here should also say
1683 Y to "Enhanced Real Time Clock Support", below.
1685 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1686 available at <http://www.tldp.org/docs.html#howto>.
1688 If you don't know what to do here, say N.
1690 config SYS_SUPPORTS_SMP
1693 config NR_CPUS_DEFAULT_1
1696 config NR_CPUS_DEFAULT_2
1699 config NR_CPUS_DEFAULT_4
1702 config NR_CPUS_DEFAULT_8
1705 config NR_CPUS_DEFAULT_16
1708 config NR_CPUS_DEFAULT_32
1711 config NR_CPUS_DEFAULT_64
1715 int "Maximum number of CPUs (2-64)"
1716 range 1 64 if NR_CPUS_DEFAULT_1
1718 default "1" if NR_CPUS_DEFAULT_1
1719 default "2" if NR_CPUS_DEFAULT_2
1720 default "4" if NR_CPUS_DEFAULT_4
1721 default "8" if NR_CPUS_DEFAULT_8
1722 default "16" if NR_CPUS_DEFAULT_16
1723 default "32" if NR_CPUS_DEFAULT_32
1724 default "64" if NR_CPUS_DEFAULT_64
1726 This allows you to specify the maximum number of CPUs which this
1727 kernel will support. The maximum supported value is 32 for 32-bit
1728 kernel and 64 for 64-bit kernels; the minimum value which makes
1729 sense is 1 for Qemu (useful only for kernel debugging purposes)
1730 and 2 for all others.
1732 This is purely to save memory - each supported CPU adds
1733 approximately eight kilobytes to the kernel image. For best
1734 performance should round up your number of processors to the next
1738 # Timer Interrupt Frequency Configuration
1742 prompt "Timer frequency"
1745 Allows the configuration of the timer frequency.
1748 bool "48 HZ" if SYS_SUPPORTS_48HZ
1751 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1754 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1757 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1760 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1763 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1766 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1770 config SYS_SUPPORTS_48HZ
1773 config SYS_SUPPORTS_100HZ
1776 config SYS_SUPPORTS_128HZ
1779 config SYS_SUPPORTS_250HZ
1782 config SYS_SUPPORTS_256HZ
1785 config SYS_SUPPORTS_1000HZ
1788 config SYS_SUPPORTS_1024HZ
1791 config SYS_SUPPORTS_ARBIT_HZ
1793 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1794 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1795 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1796 !SYS_SUPPORTS_1024HZ
1801 default 100 if HZ_100
1802 default 128 if HZ_128
1803 default 250 if HZ_250
1804 default 256 if HZ_256
1805 default 1000 if HZ_1000
1806 default 1024 if HZ_1024
1808 source "kernel/Kconfig.preempt"
1810 config MIPS_INSANE_LARGE
1811 bool "Support for large 64-bit configurations"
1812 depends on CPU_R10000 && 64BIT
1814 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1815 previous 64-bit processors which only supported 40 bit / 1TB. If you
1816 need processes of more than 1TB virtual address space, say Y here.
1817 This will result in additional memory usage, so it is not
1818 recommended for normal users.
1821 bool "Kexec system call (EXPERIMENTAL)"
1822 depends on EXPERIMENTAL
1824 kexec is a system call that implements the ability to shutdown your
1825 current kernel, and to start another kernel. It is like a reboot
1826 but it is independent of the system firmware. And like a reboot
1827 you can start any kernel with it, not just Linux.
1829 The name comes from the similarity to the exec system call.
1831 It is an ongoing process to be certain the hardware in a machine
1832 is properly shutdown, so do not be surprised if this code does not
1833 initially work for you. It may help to enable device hotplugging
1834 support. As of this writing the exact hardware interface is
1835 strongly in flux, so no good recommendation can be made.
1838 bool "Enable seccomp to safely compute untrusted bytecode"
1842 This kernel feature is useful for number crunching applications
1843 that may need to compute untrusted bytecode during their
1844 execution. By using pipes or other transports made available to
1845 the process as file descriptors supporting the read/write
1846 syscalls, it's possible to isolate those applications in
1847 their own address space using seccomp. Once seccomp is
1848 enabled via /proc/<pid>/seccomp, it cannot be disabled
1849 and the task is only allowed to execute a few safe syscalls
1850 defined by each seccomp mode.
1852 If unsure, say Y. Only embedded should say N here.
1856 config RWSEM_GENERIC_SPINLOCK
1860 config LOCKDEP_SUPPORT
1864 config STACKTRACE_SUPPORT
1868 source "init/Kconfig"
1870 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1878 bool "Support for PCI controller"
1879 depends on HW_HAS_PCI
1882 Find out whether you have a PCI motherboard. PCI is the name of a
1883 bus system, i.e. the way the CPU talks to the other stuff inside
1884 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1887 The PCI-HOWTO, available from
1888 <http://www.tldp.org/docs.html#howto>, contains valuable
1889 information about which PCI hardware does work under Linux and which
1895 source "drivers/pci/Kconfig"
1898 # ISA support is now enabled via select. Too many systems still have the one
1899 # or other ISA chip on the board that users don't know about so don't expect
1900 # users to choose the right thing ...
1907 depends on HW_HAS_EISA
1909 select GENERIC_ISA_DMA
1911 The Extended Industry Standard Architecture (EISA) bus was
1912 developed as an open alternative to the IBM MicroChannel bus.
1914 The EISA bus provided some of the features of the IBM MicroChannel
1915 bus while maintaining backward compatibility with cards made for
1916 the older ISA bus. The EISA bus saw limited use between 1988 and
1917 1995 when it was made obsolete by the PCI bus.
1919 Say Y here if you are building a kernel for an EISA-based machine.
1923 source "drivers/eisa/Kconfig"
1926 bool "TURBOchannel support"
1927 depends on MACH_DECSTATION
1929 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1930 processors. Documentation on writing device drivers for TurboChannel
1932 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1935 # bool "Access.Bus support"
1948 source "drivers/pcmcia/Kconfig"
1950 source "drivers/pci/hotplug/Kconfig"
1954 menu "Executable file formats"
1956 source "fs/Kconfig.binfmt"
1962 bool "Include IRIX binary compatibility"
1963 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1965 config MIPS32_COMPAT
1966 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1969 Select this option if you want Linux/MIPS 32-bit binary
1970 compatibility. Since all software available for Linux/MIPS is
1971 currently 32-bit you should say Y here.
1975 depends on MIPS32_COMPAT
1978 config SYSVIPC_COMPAT
1980 depends on COMPAT && SYSVIPC
1984 bool "Kernel support for o32 binaries"
1985 depends on MIPS32_COMPAT
1987 Select this option if you want to run o32 binaries. These are pure
1988 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1989 existing binaries are in this format.
1994 bool "Kernel support for n32 binaries"
1995 depends on MIPS32_COMPAT
1997 Select this option if you want to run n32 binaries. These are
1998 64-bit binaries using 32-bit quantities for addressing and certain
1999 data that would normally be 64-bit. They are used in special
2006 default y if MIPS32_O32 || MIPS32_N32
2010 menu "Power management options"
2012 source "kernel/power/Kconfig"
2016 source "net/Kconfig"
2018 source "drivers/Kconfig"
2022 source "kernel/Kconfig.instrumentation"
2024 source "arch/mips/Kconfig.debug"
2026 source "security/Kconfig"
2028 source "crypto/Kconfig"
2030 source "lib/Kconfig"