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_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
366 select SYS_SUPPORTS_LITTLE_ENDIAN
367 select ARCH_SPARSEMEM_ENABLE
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_LITTLE_ENDIAN
552 bool "SNI RM200/300/400"
553 select ARC if CPU_LITTLE_ENDIAN
554 select ARC32 if CPU_LITTLE_ENDIAN
555 select ARCH_MAY_HAVE_PC_FDC
558 select DMA_NONCOHERENT
559 select GENERIC_ISA_DMA
567 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
568 select SYS_HAS_CPU_R4X00
569 select SYS_HAS_CPU_R5000
570 select SYS_HAS_CPU_R10000
571 select R5000_CPU_SCACHE
572 select SYS_HAS_EARLY_PRINTK
573 select SYS_SUPPORTS_32BIT_KERNEL
574 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select SYS_SUPPORTS_HIGHMEM
577 select SYS_SUPPORTS_LITTLE_ENDIAN
579 The SNI RM200/300/400 are MIPS-based machines manufactured by
580 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
581 Technology and now in turn merged with Fujitsu. Say Y here to
582 support this machine type.
584 config TOSHIBA_JMR3927
585 bool "Toshiba JMR-TX3927 board"
587 select DMA_NONCOHERENT
592 select SYS_HAS_CPU_TX39XX
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_LITTLE_ENDIAN
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select GENERIC_HARDIRQS_NO__DO_IRQ
598 config TOSHIBA_RBTX4927
599 bool "Toshiba RBTX49[23]7 board"
602 select DMA_NONCOHERENT
603 select HAS_TXX9_SERIAL
607 select I8259 if TOSHIBA_FPCIB0
609 select SYS_HAS_CPU_TX49XX
610 select SYS_SUPPORTS_32BIT_KERNEL
611 select SYS_SUPPORTS_64BIT_KERNEL
612 select SYS_SUPPORTS_LITTLE_ENDIAN
613 select SYS_SUPPORTS_BIG_ENDIAN
614 select SYS_SUPPORTS_KGDB
615 select GENERIC_HARDIRQS_NO__DO_IRQ
617 This Toshiba board is based on the TX4927 processor. Say Y here to
618 support this machine type
620 config TOSHIBA_RBTX4938
621 bool "Toshiba RBTX4938 board"
624 select DMA_NONCOHERENT
625 select HAS_TXX9_SERIAL
630 select SYS_HAS_CPU_TX49XX
631 select SYS_SUPPORTS_32BIT_KERNEL
632 select SYS_SUPPORTS_LITTLE_ENDIAN
633 select SYS_SUPPORTS_BIG_ENDIAN
634 select SYS_SUPPORTS_KGDB
635 select GENERIC_HARDIRQS_NO__DO_IRQ
638 This Toshiba board is based on the TX4938 processor. Say Y here to
639 support this machine type
642 bool "Wind River PPMC board"
646 select DMA_NONCOHERENT
648 select PCI_GT64XXX_PCI0
650 select SYS_HAS_CPU_MIPS32_R1
651 select SYS_HAS_CPU_MIPS32_R2
652 select SYS_HAS_CPU_MIPS64_R1
653 select SYS_HAS_CPU_NEVADA
654 select SYS_HAS_CPU_RM7000
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_64BIT_KERNEL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select SYS_SUPPORTS_LITTLE_ENDIAN
660 This enables support for the Wind River MIPS32 4KC PPMC evaluation
661 board, which is based on GT64120 bridge chip.
665 source "arch/mips/au1000/Kconfig"
666 source "arch/mips/jazz/Kconfig"
667 source "arch/mips/lasat/Kconfig"
668 source "arch/mips/pmc-sierra/Kconfig"
669 source "arch/mips/sgi-ip27/Kconfig"
670 source "arch/mips/sibyte/Kconfig"
671 source "arch/mips/tx4927/Kconfig"
672 source "arch/mips/tx4938/Kconfig"
673 source "arch/mips/vr41xx/Kconfig"
677 config RWSEM_GENERIC_SPINLOCK
681 config RWSEM_XCHGADD_ALGORITHM
684 config ARCH_HAS_ILOG2_U32
688 config ARCH_HAS_ILOG2_U64
692 config GENERIC_FIND_NEXT_BIT
696 config GENERIC_HWEIGHT
700 config GENERIC_CALIBRATE_DELAY
704 config GENERIC_CLOCKEVENTS
712 config GENERIC_CMOS_UPDATE
716 config SCHED_NO_NO_OMIT_FRAME_POINTER
720 config GENERIC_HARDIRQS_NO__DO_IRQ
725 # Select some configuration options automatically based on user selections.
730 config ARCH_MAY_HAVE_PC_FDC
768 select DMA_NEED_PCI_MAP_STATE
770 config DMA_NONCOHERENT
772 select DMA_NEED_PCI_MAP_STATE
774 config DMA_NEED_PCI_MAP_STATE
778 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
779 depends on SYS_HAS_EARLY_PRINTK
782 This option enables special console drivers which allow the kernel
783 to print messages very early in the bootup process.
785 This is useful for kernel debugging when your machine crashes very
786 early before the console code is initialized. For normal operation,
787 it is not recommended because it looks ugly on some machines and
788 doesn't cooperate with an X server. You should normally say N here,
789 unless you want to debug such a crash.
791 config SYS_HAS_EARLY_PRINTK
810 config MIPS_DISABLE_OBSOLETE_IDE
816 config GENERIC_ISA_DMA
818 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
820 config GENERIC_ISA_DMA_SUPPORT_BROKEN
822 select GENERIC_ISA_DMA
828 # Endianess selection. Sufficiently obscure so many users don't know what to
829 # answer,so we try hard to limit the available choices. Also the use of a
830 # choice statement should be more obvious to the user.
833 prompt "Endianess selection"
835 Some MIPS machines can be configured for either little or big endian
836 byte order. These modes require different kernels and a different
837 Linux distribution. In general there is one preferred byteorder for a
838 particular system but some systems are just as commonly used in the
839 one or the other endianness.
841 config CPU_BIG_ENDIAN
843 depends on SYS_SUPPORTS_BIG_ENDIAN
845 config CPU_LITTLE_ENDIAN
847 depends on SYS_SUPPORTS_LITTLE_ENDIAN
852 config SYS_SUPPORTS_APM_EMULATION
855 config SYS_SUPPORTS_BIG_ENDIAN
858 config SYS_SUPPORTS_LITTLE_ENDIAN
882 config MIPS_BOARDS_GEN
885 config PCI_GT64XXX_PCI0
888 config NO_EXCEPT_FILL
893 select HAS_TXX9_SERIAL
905 select DMA_NONCOHERENT
907 select SYS_HAS_CPU_MIPS32_R1
908 select SYS_HAS_EARLY_PRINTK
909 select SYS_SUPPORTS_32BIT_KERNEL
910 select GENERIC_HARDIRQS_NO__DO_IRQ
911 select SYS_SUPPORTS_KGDB
931 config MIPS_L1_CACHE_SHIFT
933 default "4" if MACH_DECSTATION
934 default "7" if SGI_IP27 || SNI_RM
935 default "4" if PMC_MSP4200_EVAL
938 config HAVE_STD_PC_SERIAL_PORT
942 bool "ARC console support"
943 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
947 depends on MACH_JAZZ || SNI_RM || SGI_IP32
952 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
963 source "kernel/time/Kconfig"
971 depends on SYS_HAS_CPU_LOONGSON2
972 select CPU_SUPPORTS_32BIT_KERNEL
973 select CPU_SUPPORTS_64BIT_KERNEL
974 select CPU_SUPPORTS_HIGHMEM
976 The Loongson 2E processor implements the MIPS III instruction set
977 with many extensions.
980 bool "MIPS32 Release 1"
981 depends on SYS_HAS_CPU_MIPS32_R1
983 select CPU_HAS_PREFETCH
984 select CPU_SUPPORTS_32BIT_KERNEL
985 select CPU_SUPPORTS_HIGHMEM
987 Choose this option to build a kernel for release 1 or later of the
988 MIPS32 architecture. Most modern embedded systems with a 32-bit
989 MIPS processor are based on a MIPS32 processor. If you know the
990 specific type of processor in your system, choose those that one
991 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
992 Release 2 of the MIPS32 architecture is available since several
993 years so chances are you even have a MIPS32 Release 2 processor
994 in which case you should choose CPU_MIPS32_R2 instead for better
998 bool "MIPS32 Release 2"
999 depends on SYS_HAS_CPU_MIPS32_R2
1001 select CPU_HAS_PREFETCH
1002 select CPU_SUPPORTS_32BIT_KERNEL
1003 select CPU_SUPPORTS_HIGHMEM
1005 Choose this option to build a kernel for release 2 or later of the
1006 MIPS32 architecture. Most modern embedded systems with a 32-bit
1007 MIPS processor are based on a MIPS32 processor. If you know the
1008 specific type of processor in your system, choose those that one
1009 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1011 config CPU_MIPS64_R1
1012 bool "MIPS64 Release 1"
1013 depends on SYS_HAS_CPU_MIPS64_R1
1015 select CPU_HAS_PREFETCH
1016 select CPU_SUPPORTS_32BIT_KERNEL
1017 select CPU_SUPPORTS_64BIT_KERNEL
1018 select CPU_SUPPORTS_HIGHMEM
1020 Choose this option to build a kernel for release 1 or later of the
1021 MIPS64 architecture. Many modern embedded systems with a 64-bit
1022 MIPS processor are based on a MIPS64 processor. If you know the
1023 specific type of processor in your system, choose those that one
1024 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1025 Release 2 of the MIPS64 architecture is available since several
1026 years so chances are you even have a MIPS64 Release 2 processor
1027 in which case you should choose CPU_MIPS64_R2 instead for better
1030 config CPU_MIPS64_R2
1031 bool "MIPS64 Release 2"
1032 depends on SYS_HAS_CPU_MIPS64_R2
1034 select CPU_HAS_PREFETCH
1035 select CPU_SUPPORTS_32BIT_KERNEL
1036 select CPU_SUPPORTS_64BIT_KERNEL
1037 select CPU_SUPPORTS_HIGHMEM
1039 Choose this option to build a kernel for release 2 or later of the
1040 MIPS64 architecture. Many modern embedded systems with a 64-bit
1041 MIPS processor are based on a MIPS64 processor. If you know the
1042 specific type of processor in your system, choose those that one
1043 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1047 depends on SYS_HAS_CPU_R3000
1049 select CPU_SUPPORTS_32BIT_KERNEL
1050 select CPU_SUPPORTS_HIGHMEM
1052 Please make sure to pick the right CPU type. Linux/MIPS is not
1053 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1054 *not* work on R4000 machines and vice versa. However, since most
1055 of the supported machines have an R4000 (or similar) CPU, R4x00
1056 might be a safe bet. If the resulting kernel does not work,
1057 try to recompile with R3000.
1061 depends on SYS_HAS_CPU_TX39XX
1062 select CPU_SUPPORTS_32BIT_KERNEL
1066 depends on SYS_HAS_CPU_VR41XX
1067 select CPU_SUPPORTS_32BIT_KERNEL
1068 select CPU_SUPPORTS_64BIT_KERNEL
1070 The options selects support for the NEC VR4100 series of processors.
1071 Only choose this option if you have one of these processors as a
1072 kernel built with this option will not run on any other type of
1073 processor or vice versa.
1077 depends on SYS_HAS_CPU_R4300
1079 select CPU_SUPPORTS_32BIT_KERNEL
1080 select CPU_SUPPORTS_64BIT_KERNEL
1082 MIPS Technologies R4300-series processors.
1086 depends on SYS_HAS_CPU_R4X00
1088 select CPU_SUPPORTS_32BIT_KERNEL
1089 select CPU_SUPPORTS_64BIT_KERNEL
1091 MIPS Technologies R4000-series processors other than 4300, including
1092 the R4000, R4400, R4600, and 4700.
1096 depends on SYS_HAS_CPU_TX49XX
1098 select CPU_HAS_PREFETCH
1099 select CPU_SUPPORTS_32BIT_KERNEL
1100 select CPU_SUPPORTS_64BIT_KERNEL
1104 depends on SYS_HAS_CPU_R5000
1106 select CPU_SUPPORTS_32BIT_KERNEL
1107 select CPU_SUPPORTS_64BIT_KERNEL
1109 MIPS Technologies R5000-series processors other than the Nevada.
1113 depends on SYS_HAS_CPU_R5432
1115 select CPU_SUPPORTS_32BIT_KERNEL
1116 select CPU_SUPPORTS_64BIT_KERNEL
1120 depends on EXPERIMENTAL
1122 depends on SYS_HAS_CPU_R6000
1123 select CPU_SUPPORTS_32BIT_KERNEL
1125 MIPS Technologies R6000 and R6000A series processors. Note these
1126 processors are extremely rare and the support for them is incomplete.
1130 depends on SYS_HAS_CPU_NEVADA
1132 select CPU_SUPPORTS_32BIT_KERNEL
1133 select CPU_SUPPORTS_64BIT_KERNEL
1135 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1139 depends on EXPERIMENTAL
1140 depends on SYS_HAS_CPU_R8000
1142 select CPU_HAS_PREFETCH
1143 select CPU_SUPPORTS_64BIT_KERNEL
1145 MIPS Technologies R8000 processors. Note these processors are
1146 uncommon and the support for them is incomplete.
1150 depends on SYS_HAS_CPU_R10000
1152 select CPU_HAS_PREFETCH
1153 select CPU_SUPPORTS_32BIT_KERNEL
1154 select CPU_SUPPORTS_64BIT_KERNEL
1155 select CPU_SUPPORTS_HIGHMEM
1157 MIPS Technologies R10000-series processors.
1161 depends on SYS_HAS_CPU_RM7000
1163 select CPU_HAS_PREFETCH
1164 select CPU_SUPPORTS_32BIT_KERNEL
1165 select CPU_SUPPORTS_64BIT_KERNEL
1166 select CPU_SUPPORTS_HIGHMEM
1170 depends on SYS_HAS_CPU_RM9000
1172 select CPU_HAS_PREFETCH
1173 select CPU_SUPPORTS_32BIT_KERNEL
1174 select CPU_SUPPORTS_64BIT_KERNEL
1175 select CPU_SUPPORTS_HIGHMEM
1176 select WEAK_ORDERING
1180 depends on SYS_HAS_CPU_SB1
1182 select CPU_SUPPORTS_32BIT_KERNEL
1183 select CPU_SUPPORTS_64BIT_KERNEL
1184 select CPU_SUPPORTS_HIGHMEM
1185 select WEAK_ORDERING
1189 config SYS_HAS_CPU_LOONGSON2
1192 config SYS_HAS_CPU_MIPS32_R1
1195 config SYS_HAS_CPU_MIPS32_R2
1198 config SYS_HAS_CPU_MIPS64_R1
1201 config SYS_HAS_CPU_MIPS64_R2
1204 config SYS_HAS_CPU_R3000
1207 config SYS_HAS_CPU_TX39XX
1210 config SYS_HAS_CPU_VR41XX
1213 config SYS_HAS_CPU_R4300
1216 config SYS_HAS_CPU_R4X00
1219 config SYS_HAS_CPU_TX49XX
1222 config SYS_HAS_CPU_R5000
1225 config SYS_HAS_CPU_R5432
1228 config SYS_HAS_CPU_R6000
1231 config SYS_HAS_CPU_NEVADA
1234 config SYS_HAS_CPU_R8000
1237 config SYS_HAS_CPU_R10000
1240 config SYS_HAS_CPU_RM7000
1243 config SYS_HAS_CPU_RM9000
1246 config SYS_HAS_CPU_SB1
1250 # CPU may reorder R->R, R->W, W->R, W->W
1251 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1253 config WEAK_ORDERING
1257 # CPU may reorder reads and writes beyond LL/SC
1258 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1260 config WEAK_REORDERING_BEYOND_LLSC
1265 # These two indicate any level of the MIPS32 and MIPS64 architecture
1269 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1273 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1276 # These two indicate the revision of the architecture, either Release 1 or Release 2
1280 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1284 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1286 config SYS_SUPPORTS_32BIT_KERNEL
1288 config SYS_SUPPORTS_64BIT_KERNEL
1290 config CPU_SUPPORTS_32BIT_KERNEL
1292 config CPU_SUPPORTS_64BIT_KERNEL
1299 prompt "Kernel code model"
1301 You should only select this option if you have a workload that
1302 actually benefits from 64-bit processing or if your machine has
1303 large memory. You will only be presented a single option in this
1304 menu if your system does not support both 32-bit and 64-bit kernels.
1307 bool "32-bit kernel"
1308 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1311 Select this option if you want to build a 32-bit kernel.
1313 bool "64-bit kernel"
1314 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1316 Select this option if you want to build a 64-bit kernel.
1321 prompt "Kernel page size"
1322 default PAGE_SIZE_4KB
1324 config PAGE_SIZE_4KB
1327 This option select the standard 4kB Linux page size. On some
1328 R3000-family processors this is the only available page size. Using
1329 4kB page size will minimize memory consumption and is therefore
1330 recommended for low memory systems.
1332 config PAGE_SIZE_8KB
1334 depends on EXPERIMENTAL && CPU_R8000
1336 Using 8kB page size will result in higher performance kernel at
1337 the price of higher memory consumption. This option is available
1338 only on the R8000 processor. Not that at the time of this writing
1339 this option is still high experimental; there are also issues with
1340 compatibility of user applications.
1342 config PAGE_SIZE_16KB
1344 depends on !CPU_R3000 && !CPU_TX39XX
1346 Using 16kB page size will result in higher performance kernel at
1347 the price of higher memory consumption. This option is available on
1348 all non-R3000 family processors. Note that you will need a suitable
1349 Linux distribution to support this.
1351 config PAGE_SIZE_64KB
1353 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1355 Using 64kB page size will result in higher performance kernel at
1356 the price of higher memory consumption. This option is available on
1357 all non-R3000 family processor. Not that at the time of this
1358 writing this option is still high experimental.
1365 config IP22_CPU_SCACHE
1370 # Support for a MIPS32 / MIPS64 style S-caches
1372 config MIPS_CPU_SCACHE
1376 config R5000_CPU_SCACHE
1380 config RM7000_CPU_SCACHE
1384 config SIBYTE_DMA_PAGEOPS
1385 bool "Use DMA to clear/copy pages"
1388 Instead of using the CPU to zero and copy pages, use a Data Mover
1389 channel. These DMA channels are otherwise unused by the standard
1390 SiByte Linux port. Seems to give a small performance benefit.
1392 config CPU_HAS_PREFETCH
1396 prompt "MIPS MT options"
1398 config MIPS_MT_DISABLED
1399 bool "Disable multithreading support."
1401 Use this option if your workload can't take advantage of
1402 MIPS hardware multithreading support. On systems that don't have
1403 the option of an MT-enabled processor this option will be the only
1404 option in this menu.
1407 bool "Use 1 TC on each available VPE for SMP"
1408 depends on SYS_SUPPORTS_MULTITHREADING
1409 select CPU_MIPSR2_IRQ_VI
1410 select CPU_MIPSR2_IRQ_EI
1411 select CPU_MIPSR2_SRS
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
1428 select CPU_MIPSR2_SRS
1430 select NR_CPUS_DEFAULT_8
1432 select SYS_SUPPORTS_SMP
1434 This is a kernel model which is known a SMTC or lately has been
1435 marketesed into SMVP.
1442 config SYS_SUPPORTS_MULTITHREADING
1445 config MIPS_MT_FPAFF
1446 bool "Dynamic FPU affinity for FP-intensive threads"
1448 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1450 config MIPS_VPE_LOADER
1451 bool "VPE loader support."
1452 depends on SYS_SUPPORTS_MULTITHREADING
1453 select CPU_MIPSR2_IRQ_VI
1454 select CPU_MIPSR2_IRQ_EI
1455 select CPU_MIPSR2_SRS
1458 Includes a loader for loading an elf relocatable object
1459 onto another VPE and running it.
1461 config MIPS_MT_SMTC_INSTANT_REPLAY
1462 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1463 depends on MIPS_MT_SMTC && !PREEMPT
1466 SMTC pseudo-interrupts between TCs are deferred and queued
1467 if the target TC is interrupt-inhibited (IXMT). In the first
1468 SMTC prototypes, these queued IPIs were serviced on return
1469 to user mode, or on entry into the kernel idle loop. The
1470 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1471 processing, which adds runtime overhead (hence the option to turn
1472 it off), but ensures that IPIs are handled promptly even under
1473 heavy I/O interrupt load.
1475 config MIPS_MT_SMTC_IM_BACKSTOP
1476 bool "Use per-TC register bits as backstop for inhibited IM bits"
1477 depends on MIPS_MT_SMTC
1480 To support multiple TC microthreads acting as "CPUs" within
1481 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1482 during interrupt handling. To support legacy drivers and interrupt
1483 controller management code, SMTC has a "backstop" to track and
1484 if necessary restore the interrupt mask. This has some performance
1485 impact on interrupt service overhead. Disable it only if you know
1488 config MIPS_MT_SMTC_IRQAFF
1489 bool "Support IRQ affinity API"
1490 depends on MIPS_MT_SMTC
1493 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1494 for SMTC Linux kernel. Requires platform support, of which
1495 an example can be found in the MIPS kernel i8259 and Malta
1496 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1497 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1498 interrupt dispatch, and should be used only if you know what
1501 config MIPS_VPE_LOADER_TOM
1502 bool "Load VPE program into memory hidden from linux"
1503 depends on MIPS_VPE_LOADER
1506 The loader can use memory that is present but has been hidden from
1507 Linux using the kernel command line option "mem=xxMB". It's up to
1508 you to ensure the amount you put in the option and the space your
1509 program requires is less or equal to the amount physically present.
1511 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1512 config MIPS_VPE_APSP_API
1513 bool "Enable support for AP/SP API (RTLX)"
1514 depends on MIPS_VPE_LOADER
1517 config MIPS_APSP_KSPD
1519 depends on MIPS_VPE_APSP_API
1522 KSPD is a kernel daemon that accepts syscall requests from the SP
1523 side, actions them and returns the results. It also handles the
1524 "exit" syscall notifying other kernel modules the SP program is
1525 exiting. You probably want to say yes here.
1527 config SB1_PASS_1_WORKAROUNDS
1529 depends on CPU_SB1_PASS_1
1532 config SB1_PASS_2_WORKAROUNDS
1534 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1537 config SB1_PASS_2_1_WORKAROUNDS
1539 depends on CPU_SB1 && CPU_SB1_PASS_2
1542 config 64BIT_PHYS_ADDR
1548 config CPU_HAS_SMARTMIPS
1549 depends on SYS_SUPPORTS_SMARTMIPS
1550 bool "Support for the SmartMIPS ASE"
1552 SmartMIPS is a extension of the MIPS32 architecture aimed at
1553 increased security at both hardware and software level for
1554 smartcards. Enabling this option will allow proper use of the
1555 SmartMIPS instructions by Linux applications. However a kernel with
1556 this option will not work on a MIPS core without SmartMIPS core. If
1557 you don't know you probably don't have SmartMIPS and should say N
1563 config 64BIT_CONTEXT
1564 bool "Save 64bit integer registers"
1565 depends on 32BIT && CPU_LOONGSON2
1567 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1568 registers can still be accessed as 64bit, mainly for multimedia
1569 instructions. We must have all 64bit save/restored to make sure
1570 those instructions to get correct result.
1573 # Vectored interrupt mode is an R2 feature
1575 config CPU_MIPSR2_IRQ_VI
1579 # Extended interrupt mode is an R2 feature
1581 config CPU_MIPSR2_IRQ_EI
1585 # Shadow registers are an R2 feature
1587 config CPU_MIPSR2_SRS
1592 depends on !CPU_R3000
1595 config GENERIC_CLOCKEVENTS_BROADCAST
1599 # Use the generic interrupt handling code in kernel/irq/:
1601 config GENERIC_HARDIRQS
1605 config GENERIC_IRQ_PROBE
1613 # - Highmem only makes sense for the 32-bit kernel.
1614 # - The current highmem code will only work properly on physically indexed
1615 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1616 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1617 # moment we protect the user and offer the highmem option only on machines
1618 # where it's known to be safe. This will not offer highmem on a few systems
1619 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1620 # indexed CPUs but we're playing safe.
1621 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1622 # know they might have memory configurations that could make use of highmem
1626 bool "High Memory Support"
1627 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1629 config CPU_SUPPORTS_HIGHMEM
1632 config SYS_SUPPORTS_HIGHMEM
1635 config SYS_SUPPORTS_SMARTMIPS
1638 config ARCH_FLATMEM_ENABLE
1642 config ARCH_DISCONTIGMEM_ENABLE
1644 default y if SGI_IP27
1646 Say Y to support efficient handling of discontiguous physical memory,
1647 for architectures which are either NUMA (Non-Uniform Memory Access)
1648 or have huge holes in the physical address space for other reasons.
1649 See <file:Documentation/vm/numa> for more.
1651 config ARCH_SPARSEMEM_ENABLE
1653 select SPARSEMEM_STATIC
1657 depends on SYS_SUPPORTS_NUMA
1659 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1660 Access). This option improves performance on systems with more
1661 than two nodes; on two node systems it is generally better to
1662 leave it disabled; on single node systems disable this option
1665 config SYS_SUPPORTS_NUMA
1671 depends on NEED_MULTIPLE_NODES
1676 bool "Multi-Processing support"
1677 depends on SYS_SUPPORTS_SMP
1680 This enables support for systems with more than one CPU. If you have
1681 a system with only one CPU, like most personal computers, say N. If
1682 you have a system with more than one CPU, say Y.
1684 If you say N here, the kernel will run on single and multiprocessor
1685 machines, but will use only one CPU of a multiprocessor machine. If
1686 you say Y here, the kernel will run on many, but not all,
1687 singleprocessor machines. On a singleprocessor machine, the kernel
1688 will run faster if you say N here.
1690 People using multiprocessor machines who say Y here should also say
1691 Y to "Enhanced Real Time Clock Support", below.
1693 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1694 available at <http://www.tldp.org/docs.html#howto>.
1696 If you don't know what to do here, say N.
1698 config SYS_SUPPORTS_SMP
1701 config NR_CPUS_DEFAULT_1
1704 config NR_CPUS_DEFAULT_2
1707 config NR_CPUS_DEFAULT_4
1710 config NR_CPUS_DEFAULT_8
1713 config NR_CPUS_DEFAULT_16
1716 config NR_CPUS_DEFAULT_32
1719 config NR_CPUS_DEFAULT_64
1723 int "Maximum number of CPUs (2-64)"
1724 range 1 64 if NR_CPUS_DEFAULT_1
1726 default "1" if NR_CPUS_DEFAULT_1
1727 default "2" if NR_CPUS_DEFAULT_2
1728 default "4" if NR_CPUS_DEFAULT_4
1729 default "8" if NR_CPUS_DEFAULT_8
1730 default "16" if NR_CPUS_DEFAULT_16
1731 default "32" if NR_CPUS_DEFAULT_32
1732 default "64" if NR_CPUS_DEFAULT_64
1734 This allows you to specify the maximum number of CPUs which this
1735 kernel will support. The maximum supported value is 32 for 32-bit
1736 kernel and 64 for 64-bit kernels; the minimum value which makes
1737 sense is 1 for Qemu (useful only for kernel debugging purposes)
1738 and 2 for all others.
1740 This is purely to save memory - each supported CPU adds
1741 approximately eight kilobytes to the kernel image. For best
1742 performance should round up your number of processors to the next
1746 # Timer Interrupt Frequency Configuration
1750 prompt "Timer frequency"
1753 Allows the configuration of the timer frequency.
1756 bool "48 HZ" if SYS_SUPPORTS_48HZ
1759 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1762 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1765 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1768 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1771 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1774 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1778 config SYS_SUPPORTS_48HZ
1781 config SYS_SUPPORTS_100HZ
1784 config SYS_SUPPORTS_128HZ
1787 config SYS_SUPPORTS_250HZ
1790 config SYS_SUPPORTS_256HZ
1793 config SYS_SUPPORTS_1000HZ
1796 config SYS_SUPPORTS_1024HZ
1799 config SYS_SUPPORTS_ARBIT_HZ
1801 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1802 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1803 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1804 !SYS_SUPPORTS_1024HZ
1809 default 100 if HZ_100
1810 default 128 if HZ_128
1811 default 250 if HZ_250
1812 default 256 if HZ_256
1813 default 1000 if HZ_1000
1814 default 1024 if HZ_1024
1816 source "kernel/Kconfig.preempt"
1818 config MIPS_INSANE_LARGE
1819 bool "Support for large 64-bit configurations"
1820 depends on CPU_R10000 && 64BIT
1822 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1823 previous 64-bit processors which only supported 40 bit / 1TB. If you
1824 need processes of more than 1TB virtual address space, say Y here.
1825 This will result in additional memory usage, so it is not
1826 recommended for normal users.
1829 bool "Kexec system call (EXPERIMENTAL)"
1830 depends on EXPERIMENTAL
1832 kexec is a system call that implements the ability to shutdown your
1833 current kernel, and to start another kernel. It is like a reboot
1834 but it is independent of the system firmware. And like a reboot
1835 you can start any kernel with it, not just Linux.
1837 The name comes from the similarity to the exec system call.
1839 It is an ongoing process to be certain the hardware in a machine
1840 is properly shutdown, so do not be surprised if this code does not
1841 initially work for you. It may help to enable device hotplugging
1842 support. As of this writing the exact hardware interface is
1843 strongly in flux, so no good recommendation can be made.
1846 bool "Enable seccomp to safely compute untrusted bytecode"
1850 This kernel feature is useful for number crunching applications
1851 that may need to compute untrusted bytecode during their
1852 execution. By using pipes or other transports made available to
1853 the process as file descriptors supporting the read/write
1854 syscalls, it's possible to isolate those applications in
1855 their own address space using seccomp. Once seccomp is
1856 enabled via /proc/<pid>/seccomp, it cannot be disabled
1857 and the task is only allowed to execute a few safe syscalls
1858 defined by each seccomp mode.
1860 If unsure, say Y. Only embedded should say N here.
1864 config RWSEM_GENERIC_SPINLOCK
1868 config LOCKDEP_SUPPORT
1872 config STACKTRACE_SUPPORT
1876 source "init/Kconfig"
1878 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1886 bool "Support for PCI controller"
1887 depends on HW_HAS_PCI
1890 Find out whether you have a PCI motherboard. PCI is the name of a
1891 bus system, i.e. the way the CPU talks to the other stuff inside
1892 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1895 The PCI-HOWTO, available from
1896 <http://www.tldp.org/docs.html#howto>, contains valuable
1897 information about which PCI hardware does work under Linux and which
1903 source "drivers/pci/Kconfig"
1906 # ISA support is now enabled via select. Too many systems still have the one
1907 # or other ISA chip on the board that users don't know about so don't expect
1908 # users to choose the right thing ...
1915 depends on HW_HAS_EISA
1917 select GENERIC_ISA_DMA
1919 The Extended Industry Standard Architecture (EISA) bus was
1920 developed as an open alternative to the IBM MicroChannel bus.
1922 The EISA bus provided some of the features of the IBM MicroChannel
1923 bus while maintaining backward compatibility with cards made for
1924 the older ISA bus. The EISA bus saw limited use between 1988 and
1925 1995 when it was made obsolete by the PCI bus.
1927 Say Y here if you are building a kernel for an EISA-based machine.
1931 source "drivers/eisa/Kconfig"
1934 bool "TURBOchannel support"
1935 depends on MACH_DECSTATION
1937 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1938 processors. Documentation on writing device drivers for TurboChannel
1940 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1943 # bool "Access.Bus support"
1956 source "drivers/pcmcia/Kconfig"
1958 source "drivers/pci/hotplug/Kconfig"
1962 menu "Executable file formats"
1964 source "fs/Kconfig.binfmt"
1970 bool "Include IRIX binary compatibility"
1971 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1973 config MIPS32_COMPAT
1974 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1977 Select this option if you want Linux/MIPS 32-bit binary
1978 compatibility. Since all software available for Linux/MIPS is
1979 currently 32-bit you should say Y here.
1983 depends on MIPS32_COMPAT
1986 config SYSVIPC_COMPAT
1988 depends on COMPAT && SYSVIPC
1992 bool "Kernel support for o32 binaries"
1993 depends on MIPS32_COMPAT
1995 Select this option if you want to run o32 binaries. These are pure
1996 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1997 existing binaries are in this format.
2002 bool "Kernel support for n32 binaries"
2003 depends on MIPS32_COMPAT
2005 Select this option if you want to run n32 binaries. These are
2006 64-bit binaries using 32-bit quantities for addressing and certain
2007 data that would normally be 64-bit. They are used in special
2014 default y if MIPS32_O32 || MIPS32_N32
2018 menu "Power management options"
2020 source "kernel/power/Kconfig"
2024 source "net/Kconfig"
2026 source "drivers/Kconfig"
2030 source "kernel/Kconfig.instrumentation"
2032 source "arch/mips/Kconfig.debug"
2034 source "security/Kconfig"
2036 source "crypto/Kconfig"
2038 source "lib/Kconfig"