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
549 config SIBYTE_PTSWARM
550 bool "Sibyte BCM91250PT-PTSWARM"
551 depends on EXPERIMENTAL
554 select NR_CPUS_DEFAULT_2
557 select SYS_HAS_CPU_SB1
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_HIGHMEM
560 select SYS_SUPPORTS_LITTLE_ENDIAN
563 bool "Sibyte BCM91480B-BigSur"
566 select NR_CPUS_DEFAULT_4
567 select SIBYTE_BCM1x80
569 select SYS_HAS_CPU_SB1
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_HIGHMEM
572 select SYS_SUPPORTS_LITTLE_ENDIAN
573 select ZONE_DMA32 if 64BIT
576 bool "SNI RM200/300/400"
577 select ARC if CPU_LITTLE_ENDIAN
578 select ARC32 if CPU_LITTLE_ENDIAN
579 select ARCH_MAY_HAVE_PC_FDC
583 select DMA_NONCOHERENT
584 select GENERIC_ISA_DMA
591 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
592 select SYS_HAS_CPU_R4X00
593 select SYS_HAS_CPU_R5000
594 select SYS_HAS_CPU_R10000
595 select R5000_CPU_SCACHE
596 select SYS_HAS_EARLY_PRINTK
597 select SYS_SUPPORTS_32BIT_KERNEL
598 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select SYS_SUPPORTS_HIGHMEM
601 select SYS_SUPPORTS_LITTLE_ENDIAN
603 The SNI RM200/300/400 are MIPS-based machines manufactured by
604 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
605 Technology and now in turn merged with Fujitsu. Say Y here to
606 support this machine type.
608 config TOSHIBA_JMR3927
609 bool "Toshiba JMR-TX3927 board"
611 select DMA_NONCOHERENT
616 select SYS_HAS_CPU_TX39XX
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select GENERIC_HARDIRQS_NO__DO_IRQ
622 config TOSHIBA_RBTX4927
623 bool "Toshiba RBTX49[23]7 board"
627 select DMA_NONCOHERENT
628 select HAS_TXX9_SERIAL
632 select I8259 if TOSHIBA_FPCIB0
634 select SYS_HAS_CPU_TX49XX
635 select SYS_SUPPORTS_32BIT_KERNEL
636 select SYS_SUPPORTS_64BIT_KERNEL
637 select SYS_SUPPORTS_LITTLE_ENDIAN
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_KGDB
640 select GENERIC_HARDIRQS_NO__DO_IRQ
642 This Toshiba board is based on the TX4927 processor. Say Y here to
643 support this machine type
645 config TOSHIBA_RBTX4938
646 bool "Toshiba RBTX4938 board"
650 select DMA_NONCOHERENT
651 select HAS_TXX9_SERIAL
656 select SYS_HAS_CPU_TX49XX
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_LITTLE_ENDIAN
659 select SYS_SUPPORTS_BIG_ENDIAN
660 select SYS_SUPPORTS_KGDB
661 select GENERIC_HARDIRQS_NO__DO_IRQ
664 This Toshiba board is based on the TX4938 processor. Say Y here to
665 support this machine type
668 bool "Wind River PPMC board"
673 select DMA_NONCOHERENT
675 select PCI_GT64XXX_PCI0
677 select SYS_HAS_CPU_MIPS32_R1
678 select SYS_HAS_CPU_MIPS32_R2
679 select SYS_HAS_CPU_MIPS64_R1
680 select SYS_HAS_CPU_NEVADA
681 select SYS_HAS_CPU_RM7000
682 select SYS_SUPPORTS_32BIT_KERNEL
683 select SYS_SUPPORTS_64BIT_KERNEL
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_LITTLE_ENDIAN
687 This enables support for the Wind River MIPS32 4KC PPMC evaluation
688 board, which is based on GT64120 bridge chip.
692 source "arch/mips/au1000/Kconfig"
693 source "arch/mips/jazz/Kconfig"
694 source "arch/mips/lasat/Kconfig"
695 source "arch/mips/pmc-sierra/Kconfig"
696 source "arch/mips/sgi-ip27/Kconfig"
697 source "arch/mips/sibyte/Kconfig"
698 source "arch/mips/tx4927/Kconfig"
699 source "arch/mips/tx4938/Kconfig"
700 source "arch/mips/vr41xx/Kconfig"
704 config RWSEM_GENERIC_SPINLOCK
708 config RWSEM_XCHGADD_ALGORITHM
711 config ARCH_HAS_ILOG2_U32
715 config ARCH_HAS_ILOG2_U64
719 config ARCH_SUPPORTS_OPROFILE
721 default y if !MIPS_MT_SMTC
723 config GENERIC_FIND_NEXT_BIT
727 config GENERIC_HWEIGHT
731 config GENERIC_CALIBRATE_DELAY
735 config GENERIC_CLOCKEVENTS
743 config GENERIC_CMOS_UPDATE
747 config SCHED_NO_NO_OMIT_FRAME_POINTER
751 config GENERIC_HARDIRQS_NO__DO_IRQ
756 # Select some configuration options automatically based on user selections.
761 config ARCH_MAY_HAVE_PC_FDC
800 config DMA_NONCOHERENT
802 select DMA_NEED_PCI_MAP_STATE
804 config DMA_NEED_PCI_MAP_STATE
808 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
809 depends on SYS_HAS_EARLY_PRINTK
812 This option enables special console drivers which allow the kernel
813 to print messages very early in the bootup process.
815 This is useful for kernel debugging when your machine crashes very
816 early before the console code is initialized. For normal operation,
817 it is not recommended because it looks ugly on some machines and
818 doesn't cooperate with an X server. You should normally say N here,
819 unless you want to debug such a crash.
821 config SYS_HAS_EARLY_PRINTK
840 config MIPS_DISABLE_OBSOLETE_IDE
846 config GENERIC_ISA_DMA
848 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
850 config GENERIC_ISA_DMA_SUPPORT_BROKEN
852 select GENERIC_ISA_DMA
858 # Endianess selection. Sufficiently obscure so many users don't know what to
859 # answer,so we try hard to limit the available choices. Also the use of a
860 # choice statement should be more obvious to the user.
863 prompt "Endianess selection"
865 Some MIPS machines can be configured for either little or big endian
866 byte order. These modes require different kernels and a different
867 Linux distribution. In general there is one preferred byteorder for a
868 particular system but some systems are just as commonly used in the
869 one or the other endianness.
871 config CPU_BIG_ENDIAN
873 depends on SYS_SUPPORTS_BIG_ENDIAN
875 config CPU_LITTLE_ENDIAN
877 depends on SYS_SUPPORTS_LITTLE_ENDIAN
882 config SYS_SUPPORTS_APM_EMULATION
885 config SYS_SUPPORTS_BIG_ENDIAN
888 config SYS_SUPPORTS_LITTLE_ENDIAN
912 config MIPS_BOARDS_GEN
915 config PCI_GT64XXX_PCI0
918 config NO_EXCEPT_FILL
923 select HAS_TXX9_SERIAL
935 select DMA_NONCOHERENT
937 select SYS_HAS_CPU_MIPS32_R1
938 select SYS_HAS_EARLY_PRINTK
939 select SYS_SUPPORTS_32BIT_KERNEL
940 select GENERIC_HARDIRQS_NO__DO_IRQ
941 select SYS_SUPPORTS_KGDB
961 config MIPS_L1_CACHE_SHIFT
963 default "4" if MACH_DECSTATION
964 default "7" if SGI_IP27 || SNI_RM
965 default "4" if PMC_MSP4200_EVAL
968 config HAVE_STD_PC_SERIAL_PORT
972 bool "ARC console support"
973 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
977 depends on MACH_JAZZ || SNI_RM || SGI_IP32
982 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
999 depends on SYS_HAS_CPU_LOONGSON2
1000 select CPU_SUPPORTS_32BIT_KERNEL
1001 select CPU_SUPPORTS_64BIT_KERNEL
1002 select CPU_SUPPORTS_HIGHMEM
1004 The Loongson 2E processor implements the MIPS III instruction set
1005 with many extensions.
1007 config CPU_MIPS32_R1
1008 bool "MIPS32 Release 1"
1009 depends on SYS_HAS_CPU_MIPS32_R1
1011 select CPU_HAS_PREFETCH
1012 select CPU_SUPPORTS_32BIT_KERNEL
1013 select CPU_SUPPORTS_HIGHMEM
1015 Choose this option to build a kernel for release 1 or later of the
1016 MIPS32 architecture. Most modern embedded systems with a 32-bit
1017 MIPS processor are based on a MIPS32 processor. If you know the
1018 specific type of processor in your system, choose those that one
1019 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1020 Release 2 of the MIPS32 architecture is available since several
1021 years so chances are you even have a MIPS32 Release 2 processor
1022 in which case you should choose CPU_MIPS32_R2 instead for better
1025 config CPU_MIPS32_R2
1026 bool "MIPS32 Release 2"
1027 depends on SYS_HAS_CPU_MIPS32_R2
1029 select CPU_HAS_PREFETCH
1030 select CPU_SUPPORTS_32BIT_KERNEL
1031 select CPU_SUPPORTS_HIGHMEM
1033 Choose this option to build a kernel for release 2 or later of the
1034 MIPS32 architecture. Most modern embedded systems with a 32-bit
1035 MIPS processor are based on a MIPS32 processor. If you know the
1036 specific type of processor in your system, choose those that one
1037 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1039 config CPU_MIPS64_R1
1040 bool "MIPS64 Release 1"
1041 depends on SYS_HAS_CPU_MIPS64_R1
1043 select CPU_HAS_PREFETCH
1044 select CPU_SUPPORTS_32BIT_KERNEL
1045 select CPU_SUPPORTS_64BIT_KERNEL
1046 select CPU_SUPPORTS_HIGHMEM
1048 Choose this option to build a kernel for release 1 or later of the
1049 MIPS64 architecture. Many modern embedded systems with a 64-bit
1050 MIPS processor are based on a MIPS64 processor. If you know the
1051 specific type of processor in your system, choose those that one
1052 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1053 Release 2 of the MIPS64 architecture is available since several
1054 years so chances are you even have a MIPS64 Release 2 processor
1055 in which case you should choose CPU_MIPS64_R2 instead for better
1058 config CPU_MIPS64_R2
1059 bool "MIPS64 Release 2"
1060 depends on SYS_HAS_CPU_MIPS64_R2
1062 select CPU_HAS_PREFETCH
1063 select CPU_SUPPORTS_32BIT_KERNEL
1064 select CPU_SUPPORTS_64BIT_KERNEL
1065 select CPU_SUPPORTS_HIGHMEM
1067 Choose this option to build a kernel for release 2 or later of the
1068 MIPS64 architecture. Many modern embedded systems with a 64-bit
1069 MIPS processor are based on a MIPS64 processor. If you know the
1070 specific type of processor in your system, choose those that one
1071 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1075 depends on SYS_HAS_CPU_R3000
1077 select CPU_SUPPORTS_32BIT_KERNEL
1078 select CPU_SUPPORTS_HIGHMEM
1080 Please make sure to pick the right CPU type. Linux/MIPS is not
1081 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1082 *not* work on R4000 machines and vice versa. However, since most
1083 of the supported machines have an R4000 (or similar) CPU, R4x00
1084 might be a safe bet. If the resulting kernel does not work,
1085 try to recompile with R3000.
1089 depends on SYS_HAS_CPU_TX39XX
1090 select CPU_SUPPORTS_32BIT_KERNEL
1094 depends on SYS_HAS_CPU_VR41XX
1095 select CPU_SUPPORTS_32BIT_KERNEL
1096 select CPU_SUPPORTS_64BIT_KERNEL
1098 The options selects support for the NEC VR4100 series of processors.
1099 Only choose this option if you have one of these processors as a
1100 kernel built with this option will not run on any other type of
1101 processor or vice versa.
1105 depends on SYS_HAS_CPU_R4300
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_64BIT_KERNEL
1110 MIPS Technologies R4300-series processors.
1114 depends on SYS_HAS_CPU_R4X00
1116 select CPU_SUPPORTS_32BIT_KERNEL
1117 select CPU_SUPPORTS_64BIT_KERNEL
1119 MIPS Technologies R4000-series processors other than 4300, including
1120 the R4000, R4400, R4600, and 4700.
1124 depends on SYS_HAS_CPU_TX49XX
1126 select CPU_HAS_PREFETCH
1127 select CPU_SUPPORTS_32BIT_KERNEL
1128 select CPU_SUPPORTS_64BIT_KERNEL
1132 depends on SYS_HAS_CPU_R5000
1134 select CPU_SUPPORTS_32BIT_KERNEL
1135 select CPU_SUPPORTS_64BIT_KERNEL
1137 MIPS Technologies R5000-series processors other than the Nevada.
1141 depends on SYS_HAS_CPU_R5432
1143 select CPU_SUPPORTS_32BIT_KERNEL
1144 select CPU_SUPPORTS_64BIT_KERNEL
1148 depends on EXPERIMENTAL
1150 depends on SYS_HAS_CPU_R6000
1151 select CPU_SUPPORTS_32BIT_KERNEL
1153 MIPS Technologies R6000 and R6000A series processors. Note these
1154 processors are extremely rare and the support for them is incomplete.
1158 depends on SYS_HAS_CPU_NEVADA
1160 select CPU_SUPPORTS_32BIT_KERNEL
1161 select CPU_SUPPORTS_64BIT_KERNEL
1163 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1167 depends on EXPERIMENTAL
1168 depends on SYS_HAS_CPU_R8000
1170 select CPU_HAS_PREFETCH
1171 select CPU_SUPPORTS_64BIT_KERNEL
1173 MIPS Technologies R8000 processors. Note these processors are
1174 uncommon and the support for them is incomplete.
1178 depends on SYS_HAS_CPU_R10000
1180 select CPU_HAS_PREFETCH
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1185 MIPS Technologies R10000-series processors.
1189 depends on SYS_HAS_CPU_RM7000
1191 select CPU_HAS_PREFETCH
1192 select CPU_SUPPORTS_32BIT_KERNEL
1193 select CPU_SUPPORTS_64BIT_KERNEL
1194 select CPU_SUPPORTS_HIGHMEM
1198 depends on SYS_HAS_CPU_RM9000
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1203 select CPU_SUPPORTS_HIGHMEM
1204 select WEAK_ORDERING
1208 depends on SYS_HAS_CPU_SB1
1210 select CPU_SUPPORTS_32BIT_KERNEL
1211 select CPU_SUPPORTS_64BIT_KERNEL
1212 select CPU_SUPPORTS_HIGHMEM
1213 select WEAK_ORDERING
1217 config SYS_HAS_CPU_LOONGSON2
1220 config SYS_HAS_CPU_MIPS32_R1
1223 config SYS_HAS_CPU_MIPS32_R2
1226 config SYS_HAS_CPU_MIPS64_R1
1229 config SYS_HAS_CPU_MIPS64_R2
1232 config SYS_HAS_CPU_R3000
1235 config SYS_HAS_CPU_TX39XX
1238 config SYS_HAS_CPU_VR41XX
1241 config SYS_HAS_CPU_R4300
1244 config SYS_HAS_CPU_R4X00
1247 config SYS_HAS_CPU_TX49XX
1250 config SYS_HAS_CPU_R5000
1253 config SYS_HAS_CPU_R5432
1256 config SYS_HAS_CPU_R6000
1259 config SYS_HAS_CPU_NEVADA
1262 config SYS_HAS_CPU_R8000
1265 config SYS_HAS_CPU_R10000
1268 config SYS_HAS_CPU_RM7000
1271 config SYS_HAS_CPU_RM9000
1274 config SYS_HAS_CPU_SB1
1278 # CPU may reorder R->R, R->W, W->R, W->W
1279 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1281 config WEAK_ORDERING
1285 # CPU may reorder reads and writes beyond LL/SC
1286 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1288 config WEAK_REORDERING_BEYOND_LLSC
1293 # These two indicate any level of the MIPS32 and MIPS64 architecture
1297 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1301 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1304 # These two indicate the revision of the architecture, either Release 1 or Release 2
1308 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1312 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1314 config SYS_SUPPORTS_32BIT_KERNEL
1316 config SYS_SUPPORTS_64BIT_KERNEL
1318 config CPU_SUPPORTS_32BIT_KERNEL
1320 config CPU_SUPPORTS_64BIT_KERNEL
1327 prompt "Kernel code model"
1329 You should only select this option if you have a workload that
1330 actually benefits from 64-bit processing or if your machine has
1331 large memory. You will only be presented a single option in this
1332 menu if your system does not support both 32-bit and 64-bit kernels.
1335 bool "32-bit kernel"
1336 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1339 Select this option if you want to build a 32-bit kernel.
1341 bool "64-bit kernel"
1342 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1344 Select this option if you want to build a 64-bit kernel.
1349 prompt "Kernel page size"
1350 default PAGE_SIZE_4KB
1352 config PAGE_SIZE_4KB
1355 This option select the standard 4kB Linux page size. On some
1356 R3000-family processors this is the only available page size. Using
1357 4kB page size will minimize memory consumption and is therefore
1358 recommended for low memory systems.
1360 config PAGE_SIZE_8KB
1362 depends on EXPERIMENTAL && CPU_R8000
1364 Using 8kB page size will result in higher performance kernel at
1365 the price of higher memory consumption. This option is available
1366 only on the R8000 processor. Not that at the time of this writing
1367 this option is still high experimental; there are also issues with
1368 compatibility of user applications.
1370 config PAGE_SIZE_16KB
1372 depends on !CPU_R3000 && !CPU_TX39XX
1374 Using 16kB page size will result in higher performance kernel at
1375 the price of higher memory consumption. This option is available on
1376 all non-R3000 family processors. Note that you will need a suitable
1377 Linux distribution to support this.
1379 config PAGE_SIZE_64KB
1381 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1383 Using 64kB page size will result in higher performance kernel at
1384 the price of higher memory consumption. This option is available on
1385 all non-R3000 family processor. Not that at the time of this
1386 writing this option is still high experimental.
1393 config IP22_CPU_SCACHE
1398 # Support for a MIPS32 / MIPS64 style S-caches
1400 config MIPS_CPU_SCACHE
1404 config R5000_CPU_SCACHE
1408 config RM7000_CPU_SCACHE
1412 config SIBYTE_DMA_PAGEOPS
1413 bool "Use DMA to clear/copy pages"
1416 Instead of using the CPU to zero and copy pages, use a Data Mover
1417 channel. These DMA channels are otherwise unused by the standard
1418 SiByte Linux port. Seems to give a small performance benefit.
1420 config CPU_HAS_PREFETCH
1424 prompt "MIPS MT options"
1426 config MIPS_MT_DISABLED
1427 bool "Disable multithreading support."
1429 Use this option if your workload can't take advantage of
1430 MIPS hardware multithreading support. On systems that don't have
1431 the option of an MT-enabled processor this option will be the only
1432 option in this menu.
1435 bool "Use 1 TC on each available VPE for SMP"
1436 depends on SYS_SUPPORTS_MULTITHREADING
1437 select CPU_MIPSR2_IRQ_VI
1438 select CPU_MIPSR2_IRQ_EI
1440 select NR_CPUS_DEFAULT_2
1442 select SYS_SUPPORTS_SCHED_SMT if SMP
1443 select SYS_SUPPORTS_SMP
1445 This is a kernel model which is also known a VSMP or lately
1446 has been marketesed into SMVP.
1449 bool "SMTC: Use all TCs on all VPEs for SMP"
1450 depends on CPU_MIPS32_R2
1451 #depends on CPU_MIPS64_R2 # once there is hardware ...
1452 depends on SYS_SUPPORTS_MULTITHREADING
1453 select GENERIC_CLOCKEVENTS_BROADCAST
1454 select CPU_MIPSR2_IRQ_VI
1455 select CPU_MIPSR2_IRQ_EI
1457 select NR_CPUS_DEFAULT_8
1459 select SYS_SUPPORTS_SMP
1461 This is a kernel model which is known a SMTC or lately has been
1462 marketesed into SMVP.
1470 bool "SMT (multithreading) scheduler support"
1471 depends on SYS_SUPPORTS_SCHED_SMT
1474 SMT scheduler support improves the CPU scheduler's decision making
1475 when dealing with MIPS MT enabled cores at a cost of slightly
1476 increased overhead in some places. If unsure say N here.
1478 config SYS_SUPPORTS_SCHED_SMT
1482 config SYS_SUPPORTS_MULTITHREADING
1485 config MIPS_MT_FPAFF
1486 bool "Dynamic FPU affinity for FP-intensive threads"
1488 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1490 config MIPS_VPE_LOADER
1491 bool "VPE loader support."
1492 depends on SYS_SUPPORTS_MULTITHREADING
1493 select CPU_MIPSR2_IRQ_VI
1494 select CPU_MIPSR2_IRQ_EI
1497 Includes a loader for loading an elf relocatable object
1498 onto another VPE and running it.
1500 config MIPS_MT_SMTC_INSTANT_REPLAY
1501 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1502 depends on MIPS_MT_SMTC && !PREEMPT
1505 SMTC pseudo-interrupts between TCs are deferred and queued
1506 if the target TC is interrupt-inhibited (IXMT). In the first
1507 SMTC prototypes, these queued IPIs were serviced on return
1508 to user mode, or on entry into the kernel idle loop. The
1509 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1510 processing, which adds runtime overhead (hence the option to turn
1511 it off), but ensures that IPIs are handled promptly even under
1512 heavy I/O interrupt load.
1514 config MIPS_MT_SMTC_IM_BACKSTOP
1515 bool "Use per-TC register bits as backstop for inhibited IM bits"
1516 depends on MIPS_MT_SMTC
1519 To support multiple TC microthreads acting as "CPUs" within
1520 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1521 during interrupt handling. To support legacy drivers and interrupt
1522 controller management code, SMTC has a "backstop" to track and
1523 if necessary restore the interrupt mask. This has some performance
1524 impact on interrupt service overhead. Disable it only if you know
1527 config MIPS_MT_SMTC_IRQAFF
1528 bool "Support IRQ affinity API"
1529 depends on MIPS_MT_SMTC
1532 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1533 for SMTC Linux kernel. Requires platform support, of which
1534 an example can be found in the MIPS kernel i8259 and Malta
1535 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1536 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1537 interrupt dispatch, and should be used only if you know what
1540 config MIPS_VPE_LOADER_TOM
1541 bool "Load VPE program into memory hidden from linux"
1542 depends on MIPS_VPE_LOADER
1545 The loader can use memory that is present but has been hidden from
1546 Linux using the kernel command line option "mem=xxMB". It's up to
1547 you to ensure the amount you put in the option and the space your
1548 program requires is less or equal to the amount physically present.
1550 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1551 config MIPS_VPE_APSP_API
1552 bool "Enable support for AP/SP API (RTLX)"
1553 depends on MIPS_VPE_LOADER
1556 config MIPS_APSP_KSPD
1558 depends on MIPS_VPE_APSP_API
1561 KSPD is a kernel daemon that accepts syscall requests from the SP
1562 side, actions them and returns the results. It also handles the
1563 "exit" syscall notifying other kernel modules the SP program is
1564 exiting. You probably want to say yes here.
1566 config SB1_PASS_1_WORKAROUNDS
1568 depends on CPU_SB1_PASS_1
1571 config SB1_PASS_2_WORKAROUNDS
1573 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1576 config SB1_PASS_2_1_WORKAROUNDS
1578 depends on CPU_SB1 && CPU_SB1_PASS_2
1581 config 64BIT_PHYS_ADDR
1587 config CPU_HAS_SMARTMIPS
1588 depends on SYS_SUPPORTS_SMARTMIPS
1589 bool "Support for the SmartMIPS ASE"
1591 SmartMIPS is a extension of the MIPS32 architecture aimed at
1592 increased security at both hardware and software level for
1593 smartcards. Enabling this option will allow proper use of the
1594 SmartMIPS instructions by Linux applications. However a kernel with
1595 this option will not work on a MIPS core without SmartMIPS core. If
1596 you don't know you probably don't have SmartMIPS and should say N
1603 # Vectored interrupt mode is an R2 feature
1605 config CPU_MIPSR2_IRQ_VI
1609 # Extended interrupt mode is an R2 feature
1611 config CPU_MIPSR2_IRQ_EI
1616 depends on !CPU_R3000
1619 config GENERIC_CLOCKEVENTS_BROADCAST
1625 config CPU_DADDI_WORKAROUNDS
1628 config CPU_R4000_WORKAROUNDS
1630 select CPU_R4400_WORKAROUNDS
1632 config CPU_R4400_WORKAROUNDS
1636 # Use the generic interrupt handling code in kernel/irq/:
1638 config GENERIC_HARDIRQS
1642 config GENERIC_IRQ_PROBE
1650 # - Highmem only makes sense for the 32-bit kernel.
1651 # - The current highmem code will only work properly on physically indexed
1652 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1653 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1654 # moment we protect the user and offer the highmem option only on machines
1655 # where it's known to be safe. This will not offer highmem on a few systems
1656 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1657 # indexed CPUs but we're playing safe.
1658 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1659 # know they might have memory configurations that could make use of highmem
1663 bool "High Memory Support"
1664 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1666 config CPU_SUPPORTS_HIGHMEM
1669 config SYS_SUPPORTS_HIGHMEM
1672 config SYS_SUPPORTS_SMARTMIPS
1675 config ARCH_FLATMEM_ENABLE
1679 config ARCH_DISCONTIGMEM_ENABLE
1681 default y if SGI_IP27
1683 Say Y to support efficient handling of discontiguous physical memory,
1684 for architectures which are either NUMA (Non-Uniform Memory Access)
1685 or have huge holes in the physical address space for other reasons.
1686 See <file:Documentation/vm/numa> for more.
1688 config ARCH_POPULATES_NODE_MAP
1691 config ARCH_SPARSEMEM_ENABLE
1693 select SPARSEMEM_STATIC
1697 depends on SYS_SUPPORTS_NUMA
1699 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1700 Access). This option improves performance on systems with more
1701 than two nodes; on two node systems it is generally better to
1702 leave it disabled; on single node systems disable this option
1705 config SYS_SUPPORTS_NUMA
1711 depends on NEED_MULTIPLE_NODES
1716 bool "Multi-Processing support"
1717 depends on SYS_SUPPORTS_SMP
1720 This enables support for systems with more than one CPU. If you have
1721 a system with only one CPU, like most personal computers, say N. If
1722 you have a system with more than one CPU, say Y.
1724 If you say N here, the kernel will run on single and multiprocessor
1725 machines, but will use only one CPU of a multiprocessor machine. If
1726 you say Y here, the kernel will run on many, but not all,
1727 singleprocessor machines. On a singleprocessor machine, the kernel
1728 will run faster if you say N here.
1730 People using multiprocessor machines who say Y here should also say
1731 Y to "Enhanced Real Time Clock Support", below.
1733 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1734 available at <http://www.tldp.org/docs.html#howto>.
1736 If you don't know what to do here, say N.
1738 config SYS_SUPPORTS_SMP
1741 config NR_CPUS_DEFAULT_1
1744 config NR_CPUS_DEFAULT_2
1747 config NR_CPUS_DEFAULT_4
1750 config NR_CPUS_DEFAULT_8
1753 config NR_CPUS_DEFAULT_16
1756 config NR_CPUS_DEFAULT_32
1759 config NR_CPUS_DEFAULT_64
1763 int "Maximum number of CPUs (2-64)"
1764 range 1 64 if NR_CPUS_DEFAULT_1
1766 default "1" if NR_CPUS_DEFAULT_1
1767 default "2" if NR_CPUS_DEFAULT_2
1768 default "4" if NR_CPUS_DEFAULT_4
1769 default "8" if NR_CPUS_DEFAULT_8
1770 default "16" if NR_CPUS_DEFAULT_16
1771 default "32" if NR_CPUS_DEFAULT_32
1772 default "64" if NR_CPUS_DEFAULT_64
1774 This allows you to specify the maximum number of CPUs which this
1775 kernel will support. The maximum supported value is 32 for 32-bit
1776 kernel and 64 for 64-bit kernels; the minimum value which makes
1777 sense is 1 for Qemu (useful only for kernel debugging purposes)
1778 and 2 for all others.
1780 This is purely to save memory - each supported CPU adds
1781 approximately eight kilobytes to the kernel image. For best
1782 performance should round up your number of processors to the next
1785 source "kernel/time/Kconfig"
1788 # Timer Interrupt Frequency Configuration
1792 prompt "Timer frequency"
1795 Allows the configuration of the timer frequency.
1798 bool "48 HZ" if SYS_SUPPORTS_48HZ
1801 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1804 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1807 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1810 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1813 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1816 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1820 config SYS_SUPPORTS_48HZ
1823 config SYS_SUPPORTS_100HZ
1826 config SYS_SUPPORTS_128HZ
1829 config SYS_SUPPORTS_250HZ
1832 config SYS_SUPPORTS_256HZ
1835 config SYS_SUPPORTS_1000HZ
1838 config SYS_SUPPORTS_1024HZ
1841 config SYS_SUPPORTS_ARBIT_HZ
1843 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1844 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1845 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1846 !SYS_SUPPORTS_1024HZ
1851 default 100 if HZ_100
1852 default 128 if HZ_128
1853 default 250 if HZ_250
1854 default 256 if HZ_256
1855 default 1000 if HZ_1000
1856 default 1024 if HZ_1024
1858 source "kernel/Kconfig.preempt"
1860 config MIPS_INSANE_LARGE
1861 bool "Support for large 64-bit configurations"
1862 depends on CPU_R10000 && 64BIT
1864 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1865 previous 64-bit processors which only supported 40 bit / 1TB. If you
1866 need processes of more than 1TB virtual address space, say Y here.
1867 This will result in additional memory usage, so it is not
1868 recommended for normal users.
1871 bool "Kexec system call (EXPERIMENTAL)"
1872 depends on EXPERIMENTAL
1874 kexec is a system call that implements the ability to shutdown your
1875 current kernel, and to start another kernel. It is like a reboot
1876 but it is independent of the system firmware. And like a reboot
1877 you can start any kernel with it, not just Linux.
1879 The name comes from the similarity to the exec system call.
1881 It is an ongoing process to be certain the hardware in a machine
1882 is properly shutdown, so do not be surprised if this code does not
1883 initially work for you. It may help to enable device hotplugging
1884 support. As of this writing the exact hardware interface is
1885 strongly in flux, so no good recommendation can be made.
1888 bool "Enable seccomp to safely compute untrusted bytecode"
1892 This kernel feature is useful for number crunching applications
1893 that may need to compute untrusted bytecode during their
1894 execution. By using pipes or other transports made available to
1895 the process as file descriptors supporting the read/write
1896 syscalls, it's possible to isolate those applications in
1897 their own address space using seccomp. Once seccomp is
1898 enabled via /proc/<pid>/seccomp, it cannot be disabled
1899 and the task is only allowed to execute a few safe syscalls
1900 defined by each seccomp mode.
1902 If unsure, say Y. Only embedded should say N here.
1906 config RWSEM_GENERIC_SPINLOCK
1910 config LOCKDEP_SUPPORT
1914 config STACKTRACE_SUPPORT
1918 source "init/Kconfig"
1920 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1928 bool "Support for PCI controller"
1929 depends on HW_HAS_PCI
1932 Find out whether you have a PCI motherboard. PCI is the name of a
1933 bus system, i.e. the way the CPU talks to the other stuff inside
1934 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1937 The PCI-HOWTO, available from
1938 <http://www.tldp.org/docs.html#howto>, contains valuable
1939 information about which PCI hardware does work under Linux and which
1945 source "drivers/pci/Kconfig"
1948 # ISA support is now enabled via select. Too many systems still have the one
1949 # or other ISA chip on the board that users don't know about so don't expect
1950 # users to choose the right thing ...
1957 depends on HW_HAS_EISA
1959 select GENERIC_ISA_DMA
1961 The Extended Industry Standard Architecture (EISA) bus was
1962 developed as an open alternative to the IBM MicroChannel bus.
1964 The EISA bus provided some of the features of the IBM MicroChannel
1965 bus while maintaining backward compatibility with cards made for
1966 the older ISA bus. The EISA bus saw limited use between 1988 and
1967 1995 when it was made obsolete by the PCI bus.
1969 Say Y here if you are building a kernel for an EISA-based machine.
1973 source "drivers/eisa/Kconfig"
1976 bool "TURBOchannel support"
1977 depends on MACH_DECSTATION
1979 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1980 processors. Documentation on writing device drivers for TurboChannel
1982 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1985 # bool "Access.Bus support"
1998 source "drivers/pcmcia/Kconfig"
2000 source "drivers/pci/hotplug/Kconfig"
2004 menu "Executable file formats"
2006 source "fs/Kconfig.binfmt"
2012 bool "Include IRIX binary compatibility"
2013 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2015 config MIPS32_COMPAT
2016 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2019 Select this option if you want Linux/MIPS 32-bit binary
2020 compatibility. Since all software available for Linux/MIPS is
2021 currently 32-bit you should say Y here.
2025 depends on MIPS32_COMPAT
2028 config SYSVIPC_COMPAT
2030 depends on COMPAT && SYSVIPC
2034 bool "Kernel support for o32 binaries"
2035 depends on MIPS32_COMPAT
2037 Select this option if you want to run o32 binaries. These are pure
2038 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2039 existing binaries are in this format.
2044 bool "Kernel support for n32 binaries"
2045 depends on MIPS32_COMPAT
2047 Select this option if you want to run n32 binaries. These are
2048 64-bit binaries using 32-bit quantities for addressing and certain
2049 data that would normally be 64-bit. They are used in special
2056 default y if MIPS32_O32 || MIPS32_N32
2060 menu "Power management options"
2062 source "kernel/power/Kconfig"
2066 source "net/Kconfig"
2068 source "drivers/Kconfig"
2072 source "kernel/Kconfig.instrumentation"
2074 source "arch/mips/Kconfig.debug"
2076 source "security/Kconfig"
2078 source "crypto/Kconfig"
2080 source "lib/Kconfig"