4 # Horrible source of confusion. Die, die, die ...
8 mainmenu "Linux/MIPS Kernel Configuration"
10 menu "Machine selection"
20 bool "Alchemy processor based machines"
23 bool "Basler eXcite smart camera"
30 select SYS_HAS_CPU_RM9000
31 select SYS_SUPPORTS_32BIT_KERNEL
32 select SYS_SUPPORTS_BIG_ENDIAN
33 select SYS_SUPPORTS_KGDB
35 The eXcite is a smart camera platform manufactured by
36 Basler Vision Technologies AG.
38 config BASLER_EXCITE_PROTOTYPE
39 bool "Support for pre-release units"
40 depends on BASLER_EXCITE
43 Pre-series (prototype) units are different from later ones in
44 some ways. Select this option if you have one of these. Please
45 note that a kernel built with this option selected will not be
46 able to run on normal units.
49 bool "BCM47XX based boards"
50 select DMA_NONCOHERENT
53 select SYS_HAS_CPU_MIPS32_R1
54 select SYS_SUPPORTS_32BIT_KERNEL
55 select SYS_SUPPORTS_LITTLE_ENDIAN
57 select SSB_DRIVER_MIPS
59 select SYS_HAS_EARLY_PRINTK
62 Support for BCM47XX based boards
66 select DMA_NONCOHERENT
72 select PCI_GT64XXX_PCI0
73 select SYS_HAS_CPU_NEVADA
74 select SYS_HAS_EARLY_PRINTK
75 select SYS_SUPPORTS_32BIT_KERNEL
76 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
77 select SYS_SUPPORTS_LITTLE_ENDIAN
78 select GENERIC_HARDIRQS_NO__DO_IRQ
80 config MACH_DECSTATION
83 select DMA_NONCOHERENT
86 select SYS_HAS_CPU_R3000
87 select SYS_HAS_CPU_R4X00
88 select SYS_SUPPORTS_32BIT_KERNEL
89 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
90 select SYS_SUPPORTS_LITTLE_ENDIAN
91 select SYS_SUPPORTS_128HZ
92 select SYS_SUPPORTS_256HZ
93 select SYS_SUPPORTS_1024HZ
95 This enables support for DEC's MIPS based workstations. For details
96 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
97 DECstation porting pages on <http://decstation.unix-ag.org/>.
99 If you have one of the following DECstation Models you definitely
100 want to choose R4xx0 for the CPU Type:
107 otherwise choose R3000.
110 bool "Jazz family of machines"
113 select ARCH_MAY_HAVE_PC_FDC
114 select GENERIC_ISA_DMA
120 select SYS_HAS_CPU_R4X00
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
123 select SYS_SUPPORTS_100HZ
124 select GENERIC_HARDIRQS_NO__DO_IRQ
126 This a family of machines based on the MIPS R4030 chipset which was
127 used by several vendors to build RISC/os and Windows NT workstations.
128 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
129 Olivetti M700-10 workstations.
132 bool "LASAT Networks platforms"
133 select DMA_NONCOHERENT
134 select SYS_HAS_EARLY_PRINTK
137 select PCI_GT64XXX_PCI0
139 select R5000_CPU_SCACHE
140 select SYS_HAS_CPU_R5000
141 select SYS_SUPPORTS_32BIT_KERNEL
142 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
143 select SYS_SUPPORTS_LITTLE_ENDIAN
144 select GENERIC_HARDIRQS_NO__DO_IRQ
147 bool "Lemote Fulong mini-PC"
148 select ARCH_SPARSEMEM_ENABLE
149 select SYS_HAS_CPU_LOONGSON2
150 select DMA_NONCOHERENT
153 select HAVE_STD_PC_SERIAL_PORT
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_HIGHMEM
162 select SYS_HAS_EARLY_PRINTK
163 select GENERIC_HARDIRQS_NO__DO_IRQ
164 select GENERIC_ISA_DMA_SUPPORT_BROKEN
167 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
171 bool "MIPS Atlas board"
173 select DMA_NONCOHERENT
174 select SYS_HAS_EARLY_PRINTK
177 select MIPS_BOARDS_GEN
179 select PCI_GT64XXX_PCI0
181 select RM7000_CPU_SCACHE
183 select SYS_HAS_CPU_MIPS32_R1
184 select SYS_HAS_CPU_MIPS32_R2
185 select SYS_HAS_CPU_MIPS64_R1
186 select SYS_HAS_CPU_NEVADA
187 select SYS_HAS_CPU_RM7000
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_SUPPORTS_64BIT_KERNEL
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_SUPPORTS_LITTLE_ENDIAN
192 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
193 select SYS_SUPPORTS_SMARTMIPS
194 select GENERIC_HARDIRQS_NO__DO_IRQ
196 This enables support for the MIPS Technologies Atlas evaluation
200 bool "MIPS Malta board"
201 select ARCH_MAY_HAVE_PC_FDC
203 select DMA_NONCOHERENT
204 select GENERIC_ISA_DMA
209 select MIPS_BOARDS_GEN
211 select MIPS_CPU_SCACHE
212 select PCI_GT64XXX_PCI0
215 select SYS_HAS_CPU_MIPS32_R1
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_HAS_CPU_MIPS64_R1
218 select SYS_HAS_CPU_NEVADA
219 select SYS_HAS_CPU_RM7000
220 select SYS_HAS_EARLY_PRINTK
221 select SYS_SUPPORTS_32BIT_KERNEL
222 select SYS_SUPPORTS_64BIT_KERNEL
223 select SYS_SUPPORTS_BIG_ENDIAN
224 select SYS_SUPPORTS_LITTLE_ENDIAN
225 select SYS_SUPPORTS_MULTITHREADING
226 select SYS_SUPPORTS_SMARTMIPS
228 This enables support for the MIPS Technologies Malta evaluation
232 bool "MIPS SEAD board"
234 select DMA_NONCOHERENT
235 select SYS_HAS_EARLY_PRINTK
236 select MIPS_BOARDS_GEN
237 select SYS_HAS_CPU_MIPS32_R1
238 select SYS_HAS_CPU_MIPS32_R2
239 select SYS_HAS_CPU_MIPS64_R1
240 select SYS_SUPPORTS_32BIT_KERNEL
241 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_LITTLE_ENDIAN
244 select SYS_SUPPORTS_SMARTMIPS
246 This enables support for the MIPS Technologies SEAD evaluation
250 bool 'MIPS simulator (MIPSsim)'
251 select DMA_NONCOHERENT
252 select SYS_HAS_EARLY_PRINTK
255 select SYS_HAS_CPU_MIPS32_R1
256 select SYS_HAS_CPU_MIPS32_R2
257 select SYS_HAS_EARLY_PRINTK
258 select SYS_SUPPORTS_32BIT_KERNEL
259 select SYS_SUPPORTS_BIG_ENDIAN
260 select SYS_SUPPORTS_MULTITHREADING
261 select SYS_SUPPORTS_LITTLE_ENDIAN
263 This option enables support for MIPS Technologies MIPSsim software
267 bool "NEC EMMA2RH Mark-eins"
268 select DMA_NONCOHERENT
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_BIG_ENDIAN
274 select SYS_SUPPORTS_LITTLE_ENDIAN
275 select SYS_HAS_CPU_R5000
277 This enables support for the R5432-based NEC Mark-eins
278 boards with R5500 CPU.
281 bool "NEC VR4100 series based machines"
282 select SYS_HAS_CPU_VR41XX
283 select GENERIC_HARDIRQS_NO__DO_IRQ
286 bool "Philips PNX8550 based JBS board"
288 select SYS_SUPPORTS_LITTLE_ENDIAN
290 config PNX8550_STB810
291 bool "Philips PNX8550 based STB810 board"
293 select SYS_SUPPORTS_LITTLE_ENDIAN
296 bool "PMC-Sierra MSP chipsets"
297 depends on EXPERIMENTAL
298 select DMA_NONCOHERENT
300 select NO_EXCEPT_FILL
302 select SYS_HAS_CPU_MIPS32_R1
303 select SYS_HAS_CPU_MIPS32_R2
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_BIG_ENDIAN
306 select SYS_SUPPORTS_KGDB
309 select SERIAL_8250_CONSOLE
311 This adds support for the PMC-Sierra family of Multi-Service
312 Processor System-On-A-Chips. These parts include a number
313 of integrated peripherals, interfaces and DSPs in addition to
314 a variety of MIPS cores.
317 bool "PMC-Sierra Yosemite eval board"
324 select SYS_HAS_CPU_RM9000
325 select SYS_HAS_EARLY_PRINTK
326 select SYS_SUPPORTS_32BIT_KERNEL
327 select SYS_SUPPORTS_64BIT_KERNEL
328 select SYS_SUPPORTS_BIG_ENDIAN
329 select SYS_SUPPORTS_HIGHMEM
330 select SYS_SUPPORTS_KGDB
331 select SYS_SUPPORTS_SMP
333 Yosemite is an evaluation board for the RM9000x2 processor
334 manufactured by PMC-Sierra.
339 select GENERIC_ISA_DMA
340 select HAVE_STD_PC_SERIAL_PORT
347 select SYS_HAS_CPU_MIPS32_R1
348 select SYS_SUPPORTS_32BIT_KERNEL
349 select SYS_SUPPORTS_BIG_ENDIAN
350 select SYS_SUPPORTS_LITTLE_ENDIAN
351 select ARCH_SPARSEMEM_ENABLE
352 select GENERIC_HARDIRQS_NO__DO_IRQ
353 select NR_CPUS_DEFAULT_1
354 select SYS_SUPPORTS_SMP
356 Qemu is a software emulator which among other architectures also
357 can simulate a MIPS32 4Kc system. This patch adds support for the
358 system architecture that currently is being simulated by Qemu. It
359 will eventually be removed again when Qemu has the capability to
360 simulate actual MIPS hardware platforms. More information on Qemu
361 can be found at http://www.linux-mips.org/wiki/Qemu.
364 bool "SGI IP22 (Indy/Indigo2)"
368 select DMA_NONCOHERENT
371 select IP22_CPU_SCACHE
373 select GENERIC_ISA_DMA_SUPPORT_BROKEN
375 select SYS_HAS_CPU_R4X00
376 select SYS_HAS_CPU_R5000
377 select SYS_HAS_EARLY_PRINTK
378 select SYS_SUPPORTS_32BIT_KERNEL
379 select SYS_SUPPORTS_64BIT_KERNEL
380 select SYS_SUPPORTS_BIG_ENDIAN
382 This are the SGI Indy, Challenge S and Indigo2, as well as certain
383 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
384 that runs on these, say Y here.
387 bool "SGI IP27 (Origin200/2000)"
392 select SYS_HAS_EARLY_PRINTK
394 select NR_CPUS_DEFAULT_64
395 select SYS_HAS_CPU_R10000
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
398 select SYS_SUPPORTS_KGDB
399 select SYS_SUPPORTS_NUMA
400 select SYS_SUPPORTS_SMP
401 select GENERIC_HARDIRQS_NO__DO_IRQ
403 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
404 workstations. To compile a Linux kernel that runs on these, say Y
412 select DMA_NONCOHERENT
415 select R5000_CPU_SCACHE
416 select RM7000_CPU_SCACHE
417 select SYS_HAS_CPU_R5000
418 select SYS_HAS_CPU_R10000 if BROKEN
419 select SYS_HAS_CPU_RM7000
420 select SYS_HAS_CPU_NEVADA
421 select SYS_SUPPORTS_64BIT_KERNEL
422 select SYS_SUPPORTS_BIG_ENDIAN
424 If you want this kernel to run on SGI O2 workstation, say Y here.
427 bool "Sibyte BCM91120C-CRhine"
428 depends on EXPERIMENTAL
431 select SIBYTE_BCM1120
433 select SYS_HAS_CPU_SB1
434 select SYS_SUPPORTS_BIG_ENDIAN
435 select SYS_SUPPORTS_LITTLE_ENDIAN
438 bool "Sibyte BCM91120x-Carmel"
439 depends on EXPERIMENTAL
442 select SIBYTE_BCM1120
444 select SYS_HAS_CPU_SB1
445 select SYS_SUPPORTS_BIG_ENDIAN
446 select SYS_SUPPORTS_LITTLE_ENDIAN
449 bool "Sibyte BCM91125C-CRhone"
450 depends on EXPERIMENTAL
453 select SIBYTE_BCM1125
455 select SYS_HAS_CPU_SB1
456 select SYS_SUPPORTS_BIG_ENDIAN
457 select SYS_SUPPORTS_HIGHMEM
458 select SYS_SUPPORTS_LITTLE_ENDIAN
461 bool "Sibyte BCM91125E-Rhone"
462 depends on EXPERIMENTAL
465 select SIBYTE_BCM1125H
467 select SYS_HAS_CPU_SB1
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_LITTLE_ENDIAN
472 bool "Sibyte BCM91250A-SWARM"
475 select NR_CPUS_DEFAULT_2
478 select SYS_HAS_CPU_SB1
479 select SYS_SUPPORTS_BIG_ENDIAN
480 select SYS_SUPPORTS_HIGHMEM
481 select SYS_SUPPORTS_KGDB
482 select SYS_SUPPORTS_LITTLE_ENDIAN
484 config SIBYTE_LITTLESUR
485 bool "Sibyte BCM91250C2-LittleSur"
486 depends on EXPERIMENTAL
489 select NR_CPUS_DEFAULT_2
492 select SYS_HAS_CPU_SB1
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_HIGHMEM
495 select SYS_SUPPORTS_LITTLE_ENDIAN
497 config SIBYTE_SENTOSA
498 bool "Sibyte BCM91250E-Sentosa"
499 depends on EXPERIMENTAL
502 select NR_CPUS_DEFAULT_2
505 select SYS_HAS_CPU_SB1
506 select SYS_SUPPORTS_BIG_ENDIAN
507 select SYS_SUPPORTS_LITTLE_ENDIAN
509 config SIBYTE_PTSWARM
510 bool "Sibyte BCM91250PT-PTSWARM"
511 depends on EXPERIMENTAL
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_LITTLE_ENDIAN
523 bool "Sibyte BCM91480B-BigSur"
526 select NR_CPUS_DEFAULT_4
527 select SIBYTE_BCM1x80
529 select SYS_HAS_CPU_SB1
530 select SYS_SUPPORTS_BIG_ENDIAN
531 select SYS_SUPPORTS_LITTLE_ENDIAN
534 bool "SNI RM200/300/400"
535 select ARC if CPU_LITTLE_ENDIAN
536 select ARC32 if CPU_LITTLE_ENDIAN
537 select ARCH_MAY_HAVE_PC_FDC
539 select DMA_NONCOHERENT
540 select GENERIC_ISA_DMA
548 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
549 select SYS_HAS_CPU_R4X00
550 select SYS_HAS_CPU_R5000
551 select SYS_HAS_CPU_R10000
552 select R5000_CPU_SCACHE
553 select SYS_HAS_EARLY_PRINTK
554 select SYS_SUPPORTS_32BIT_KERNEL
555 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_HIGHMEM
558 select SYS_SUPPORTS_LITTLE_ENDIAN
560 The SNI RM200/300/400 are MIPS-based machines manufactured by
561 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
562 Technology and now in turn merged with Fujitsu. Say Y here to
563 support this machine type.
565 config TOSHIBA_JMR3927
566 bool "Toshiba JMR-TX3927 board"
567 select DMA_NONCOHERENT
572 select SYS_HAS_CPU_TX39XX
573 select SYS_SUPPORTS_32BIT_KERNEL
574 select SYS_SUPPORTS_LITTLE_ENDIAN
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select GENERIC_HARDIRQS_NO__DO_IRQ
578 config TOSHIBA_RBTX4927
579 bool "Toshiba RBTX49[23]7 board"
580 select DMA_NONCOHERENT
581 select HAS_TXX9_SERIAL
585 select I8259 if TOSHIBA_FPCIB0
587 select SYS_HAS_CPU_TX49XX
588 select SYS_SUPPORTS_32BIT_KERNEL
589 select SYS_SUPPORTS_64BIT_KERNEL
590 select SYS_SUPPORTS_LITTLE_ENDIAN
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_KGDB
593 select GENERIC_HARDIRQS_NO__DO_IRQ
595 This Toshiba board is based on the TX4927 processor. Say Y here to
596 support this machine type
598 config TOSHIBA_RBTX4938
599 bool "Toshiba RBTX4938 board"
600 select DMA_NONCOHERENT
601 select HAS_TXX9_SERIAL
606 select SYS_HAS_CPU_TX49XX
607 select SYS_SUPPORTS_32BIT_KERNEL
608 select SYS_SUPPORTS_LITTLE_ENDIAN
609 select SYS_SUPPORTS_BIG_ENDIAN
610 select SYS_SUPPORTS_KGDB
611 select GENERIC_HARDIRQS_NO__DO_IRQ
614 This Toshiba board is based on the TX4938 processor. Say Y here to
615 support this machine type
618 bool "Wind River PPMC board"
621 select DMA_NONCOHERENT
623 select PCI_GT64XXX_PCI0
625 select SYS_HAS_CPU_MIPS32_R1
626 select SYS_HAS_CPU_MIPS32_R2
627 select SYS_HAS_CPU_MIPS64_R1
628 select SYS_HAS_CPU_NEVADA
629 select SYS_HAS_CPU_RM7000
630 select SYS_SUPPORTS_32BIT_KERNEL
631 select SYS_SUPPORTS_64BIT_KERNEL
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select SYS_SUPPORTS_LITTLE_ENDIAN
635 This enables support for the Wind River MIPS32 4KC PPMC evaluation
636 board, which is based on GT64120 bridge chip.
640 source "arch/mips/au1000/Kconfig"
641 source "arch/mips/jazz/Kconfig"
642 source "arch/mips/lasat/Kconfig"
643 source "arch/mips/pmc-sierra/Kconfig"
644 source "arch/mips/sgi-ip27/Kconfig"
645 source "arch/mips/sibyte/Kconfig"
646 source "arch/mips/tx4927/Kconfig"
647 source "arch/mips/tx4938/Kconfig"
648 source "arch/mips/vr41xx/Kconfig"
652 config RWSEM_GENERIC_SPINLOCK
656 config RWSEM_XCHGADD_ALGORITHM
659 config ARCH_HAS_ILOG2_U32
663 config ARCH_HAS_ILOG2_U64
667 config GENERIC_FIND_NEXT_BIT
671 config GENERIC_HWEIGHT
675 config GENERIC_CALIBRATE_DELAY
679 config GENERIC_CLOCKEVENTS
687 config GENERIC_CMOS_UPDATE
691 config SCHED_NO_NO_OMIT_FRAME_POINTER
695 config GENERIC_HARDIRQS_NO__DO_IRQ
700 # Select some configuration options automatically based on user selections.
705 config ARCH_MAY_HAVE_PC_FDC
722 select DMA_NEED_PCI_MAP_STATE
724 config DMA_NONCOHERENT
726 select DMA_NEED_PCI_MAP_STATE
728 config DMA_NEED_PCI_MAP_STATE
732 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
733 depends on SYS_HAS_EARLY_PRINTK
736 This option enables special console drivers which allow the kernel
737 to print messages very early in the bootup process.
739 This is useful for kernel debugging when your machine crashes very
740 early before the console code is initialized. For normal operation,
741 it is not recommended because it looks ugly on some machines and
742 doesn't cooperate with an X server. You should normally say N here,
743 unless you want to debug such a crash.
745 config SYS_HAS_EARLY_PRINTK
764 config MIPS_DISABLE_OBSOLETE_IDE
770 config GENERIC_ISA_DMA
772 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
774 config GENERIC_ISA_DMA_SUPPORT_BROKEN
776 select GENERIC_ISA_DMA
782 # Endianess selection. Sufficiently obscure so many users don't know what to
783 # answer,so we try hard to limit the available choices. Also the use of a
784 # choice statement should be more obvious to the user.
787 prompt "Endianess selection"
789 Some MIPS machines can be configured for either little or big endian
790 byte order. These modes require different kernels and a different
791 Linux distribution. In general there is one preferred byteorder for a
792 particular system but some systems are just as commonly used in the
793 one or the other endianness.
795 config CPU_BIG_ENDIAN
797 depends on SYS_SUPPORTS_BIG_ENDIAN
799 config CPU_LITTLE_ENDIAN
801 depends on SYS_SUPPORTS_LITTLE_ENDIAN
806 config SYS_SUPPORTS_APM_EMULATION
809 config SYS_SUPPORTS_BIG_ENDIAN
812 config SYS_SUPPORTS_LITTLE_ENDIAN
836 config MIPS_BOARDS_GEN
839 config PCI_GT64XXX_PCI0
842 config NO_EXCEPT_FILL
847 select HAS_TXX9_SERIAL
859 select DMA_NONCOHERENT
861 select SYS_HAS_CPU_MIPS32_R1
862 select SYS_HAS_EARLY_PRINTK
863 select SYS_SUPPORTS_32BIT_KERNEL
864 select GENERIC_HARDIRQS_NO__DO_IRQ
865 select SYS_SUPPORTS_KGDB
885 config MIPS_L1_CACHE_SHIFT
887 default "4" if MACH_DECSTATION
888 default "7" if SGI_IP27 || SNI_RM
889 default "4" if PMC_MSP4200_EVAL
892 config HAVE_STD_PC_SERIAL_PORT
896 bool "ARC console support"
897 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
901 depends on MACH_JAZZ || SNI_RM || SGI_IP32
906 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
917 source "kernel/time/Kconfig"
925 depends on SYS_HAS_CPU_LOONGSON2
926 select CPU_SUPPORTS_32BIT_KERNEL
927 select CPU_SUPPORTS_64BIT_KERNEL
928 select CPU_SUPPORTS_HIGHMEM
930 The Loongson 2E processor implements the MIPS III instruction set
931 with many extensions.
934 bool "MIPS32 Release 1"
935 depends on SYS_HAS_CPU_MIPS32_R1
937 select CPU_HAS_PREFETCH
938 select CPU_SUPPORTS_32BIT_KERNEL
939 select CPU_SUPPORTS_HIGHMEM
941 Choose this option to build a kernel for release 1 or later of the
942 MIPS32 architecture. Most modern embedded systems with a 32-bit
943 MIPS processor are based on a MIPS32 processor. If you know the
944 specific type of processor in your system, choose those that one
945 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
946 Release 2 of the MIPS32 architecture is available since several
947 years so chances are you even have a MIPS32 Release 2 processor
948 in which case you should choose CPU_MIPS32_R2 instead for better
952 bool "MIPS32 Release 2"
953 depends on SYS_HAS_CPU_MIPS32_R2
955 select CPU_HAS_PREFETCH
956 select CPU_SUPPORTS_32BIT_KERNEL
957 select CPU_SUPPORTS_HIGHMEM
959 Choose this option to build a kernel for release 2 or later of the
960 MIPS32 architecture. Most modern embedded systems with a 32-bit
961 MIPS processor are based on a MIPS32 processor. If you know the
962 specific type of processor in your system, choose those that one
963 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
966 bool "MIPS64 Release 1"
967 depends on SYS_HAS_CPU_MIPS64_R1
969 select CPU_HAS_PREFETCH
970 select CPU_SUPPORTS_32BIT_KERNEL
971 select CPU_SUPPORTS_64BIT_KERNEL
972 select CPU_SUPPORTS_HIGHMEM
974 Choose this option to build a kernel for release 1 or later of the
975 MIPS64 architecture. Many modern embedded systems with a 64-bit
976 MIPS processor are based on a MIPS64 processor. If you know the
977 specific type of processor in your system, choose those that one
978 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
979 Release 2 of the MIPS64 architecture is available since several
980 years so chances are you even have a MIPS64 Release 2 processor
981 in which case you should choose CPU_MIPS64_R2 instead for better
985 bool "MIPS64 Release 2"
986 depends on SYS_HAS_CPU_MIPS64_R2
988 select CPU_HAS_PREFETCH
989 select CPU_SUPPORTS_32BIT_KERNEL
990 select CPU_SUPPORTS_64BIT_KERNEL
991 select CPU_SUPPORTS_HIGHMEM
993 Choose this option to build a kernel for release 2 or later of the
994 MIPS64 architecture. Many modern embedded systems with a 64-bit
995 MIPS processor are based on a MIPS64 processor. If you know the
996 specific type of processor in your system, choose those that one
997 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1001 depends on SYS_HAS_CPU_R3000
1003 select CPU_SUPPORTS_32BIT_KERNEL
1004 select CPU_SUPPORTS_HIGHMEM
1006 Please make sure to pick the right CPU type. Linux/MIPS is not
1007 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1008 *not* work on R4000 machines and vice versa. However, since most
1009 of the supported machines have an R4000 (or similar) CPU, R4x00
1010 might be a safe bet. If the resulting kernel does not work,
1011 try to recompile with R3000.
1015 depends on SYS_HAS_CPU_TX39XX
1016 select CPU_SUPPORTS_32BIT_KERNEL
1020 depends on SYS_HAS_CPU_VR41XX
1021 select CPU_SUPPORTS_32BIT_KERNEL
1022 select CPU_SUPPORTS_64BIT_KERNEL
1024 The options selects support for the NEC VR4100 series of processors.
1025 Only choose this option if you have one of these processors as a
1026 kernel built with this option will not run on any other type of
1027 processor or vice versa.
1031 depends on SYS_HAS_CPU_R4300
1033 select CPU_SUPPORTS_32BIT_KERNEL
1034 select CPU_SUPPORTS_64BIT_KERNEL
1036 MIPS Technologies R4300-series processors.
1040 depends on SYS_HAS_CPU_R4X00
1042 select CPU_SUPPORTS_32BIT_KERNEL
1043 select CPU_SUPPORTS_64BIT_KERNEL
1045 MIPS Technologies R4000-series processors other than 4300, including
1046 the R4000, R4400, R4600, and 4700.
1050 depends on SYS_HAS_CPU_TX49XX
1052 select CPU_HAS_PREFETCH
1053 select CPU_SUPPORTS_32BIT_KERNEL
1054 select CPU_SUPPORTS_64BIT_KERNEL
1058 depends on SYS_HAS_CPU_R5000
1060 select CPU_SUPPORTS_32BIT_KERNEL
1061 select CPU_SUPPORTS_64BIT_KERNEL
1063 MIPS Technologies R5000-series processors other than the Nevada.
1067 depends on SYS_HAS_CPU_R5432
1069 select CPU_SUPPORTS_32BIT_KERNEL
1070 select CPU_SUPPORTS_64BIT_KERNEL
1074 depends on EXPERIMENTAL
1076 depends on SYS_HAS_CPU_R6000
1077 select CPU_SUPPORTS_32BIT_KERNEL
1079 MIPS Technologies R6000 and R6000A series processors. Note these
1080 processors are extremely rare and the support for them is incomplete.
1084 depends on SYS_HAS_CPU_NEVADA
1086 select CPU_SUPPORTS_32BIT_KERNEL
1087 select CPU_SUPPORTS_64BIT_KERNEL
1089 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1093 depends on EXPERIMENTAL
1094 depends on SYS_HAS_CPU_R8000
1096 select CPU_HAS_PREFETCH
1097 select CPU_SUPPORTS_64BIT_KERNEL
1099 MIPS Technologies R8000 processors. Note these processors are
1100 uncommon and the support for them is incomplete.
1104 depends on SYS_HAS_CPU_R10000
1106 select CPU_HAS_PREFETCH
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_64BIT_KERNEL
1109 select CPU_SUPPORTS_HIGHMEM
1111 MIPS Technologies R10000-series processors.
1115 depends on SYS_HAS_CPU_RM7000
1117 select CPU_HAS_PREFETCH
1118 select CPU_SUPPORTS_32BIT_KERNEL
1119 select CPU_SUPPORTS_64BIT_KERNEL
1120 select CPU_SUPPORTS_HIGHMEM
1124 depends on SYS_HAS_CPU_RM9000
1126 select CPU_HAS_PREFETCH
1127 select CPU_SUPPORTS_32BIT_KERNEL
1128 select CPU_SUPPORTS_64BIT_KERNEL
1129 select CPU_SUPPORTS_HIGHMEM
1130 select WEAK_ORDERING
1134 depends on SYS_HAS_CPU_SB1
1136 select CPU_SUPPORTS_32BIT_KERNEL
1137 select CPU_SUPPORTS_64BIT_KERNEL
1138 select CPU_SUPPORTS_HIGHMEM
1139 select WEAK_ORDERING
1143 config SYS_HAS_CPU_LOONGSON2
1146 config SYS_HAS_CPU_MIPS32_R1
1149 config SYS_HAS_CPU_MIPS32_R2
1152 config SYS_HAS_CPU_MIPS64_R1
1155 config SYS_HAS_CPU_MIPS64_R2
1158 config SYS_HAS_CPU_R3000
1161 config SYS_HAS_CPU_TX39XX
1164 config SYS_HAS_CPU_VR41XX
1167 config SYS_HAS_CPU_R4300
1170 config SYS_HAS_CPU_R4X00
1173 config SYS_HAS_CPU_TX49XX
1176 config SYS_HAS_CPU_R5000
1179 config SYS_HAS_CPU_R5432
1182 config SYS_HAS_CPU_R6000
1185 config SYS_HAS_CPU_NEVADA
1188 config SYS_HAS_CPU_R8000
1191 config SYS_HAS_CPU_R10000
1194 config SYS_HAS_CPU_RM7000
1197 config SYS_HAS_CPU_RM9000
1200 config SYS_HAS_CPU_SB1
1204 # CPU may reorder R->R, R->W, W->R, W->W
1205 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1207 config WEAK_ORDERING
1211 # CPU may reorder reads and writes beyond LL/SC
1212 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1214 config WEAK_REORDERING_BEYOND_LLSC
1219 # These two indicate any level of the MIPS32 and MIPS64 architecture
1223 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1227 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1230 # These two indicate the revision of the architecture, either Release 1 or Release 2
1234 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1238 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1240 config SYS_SUPPORTS_32BIT_KERNEL
1242 config SYS_SUPPORTS_64BIT_KERNEL
1244 config CPU_SUPPORTS_32BIT_KERNEL
1246 config CPU_SUPPORTS_64BIT_KERNEL
1253 prompt "Kernel code model"
1255 You should only select this option if you have a workload that
1256 actually benefits from 64-bit processing or if your machine has
1257 large memory. You will only be presented a single option in this
1258 menu if your system does not support both 32-bit and 64-bit kernels.
1261 bool "32-bit kernel"
1262 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1265 Select this option if you want to build a 32-bit kernel.
1267 bool "64-bit kernel"
1268 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1270 Select this option if you want to build a 64-bit kernel.
1275 prompt "Kernel page size"
1276 default PAGE_SIZE_4KB
1278 config PAGE_SIZE_4KB
1281 This option select the standard 4kB Linux page size. On some
1282 R3000-family processors this is the only available page size. Using
1283 4kB page size will minimize memory consumption and is therefore
1284 recommended for low memory systems.
1286 config PAGE_SIZE_8KB
1288 depends on EXPERIMENTAL && CPU_R8000
1290 Using 8kB page size will result in higher performance kernel at
1291 the price of higher memory consumption. This option is available
1292 only on the R8000 processor. Not that at the time of this writing
1293 this option is still high experimental; there are also issues with
1294 compatibility of user applications.
1296 config PAGE_SIZE_16KB
1298 depends on !CPU_R3000 && !CPU_TX39XX
1300 Using 16kB page size will result in higher performance kernel at
1301 the price of higher memory consumption. This option is available on
1302 all non-R3000 family processors. Note that you will need a suitable
1303 Linux distribution to support this.
1305 config PAGE_SIZE_64KB
1307 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1309 Using 64kB page size will result in higher performance kernel at
1310 the price of higher memory consumption. This option is available on
1311 all non-R3000 family processor. Not that at the time of this
1312 writing this option is still high experimental.
1319 config IP22_CPU_SCACHE
1324 # Support for a MIPS32 / MIPS64 style S-caches
1326 config MIPS_CPU_SCACHE
1330 config R5000_CPU_SCACHE
1334 config RM7000_CPU_SCACHE
1338 config SIBYTE_DMA_PAGEOPS
1339 bool "Use DMA to clear/copy pages"
1342 Instead of using the CPU to zero and copy pages, use a Data Mover
1343 channel. These DMA channels are otherwise unused by the standard
1344 SiByte Linux port. Seems to give a small performance benefit.
1346 config CPU_HAS_PREFETCH
1350 prompt "MIPS MT options"
1352 config MIPS_MT_DISABLED
1353 bool "Disable multithreading support."
1355 Use this option if your workload can't take advantage of
1356 MIPS hardware multithreading support. On systems that don't have
1357 the option of an MT-enabled processor this option will be the only
1358 option in this menu.
1361 bool "Use 1 TC on each available VPE for SMP"
1362 depends on SYS_SUPPORTS_MULTITHREADING
1363 select CPU_MIPSR2_IRQ_VI
1364 select CPU_MIPSR2_IRQ_EI
1365 select CPU_MIPSR2_SRS
1367 select NR_CPUS_DEFAULT_2
1369 select SYS_SUPPORTS_SMP
1371 This is a kernel model which is also known a VSMP or lately
1372 has been marketesed into SMVP.
1375 bool "SMTC: Use all TCs on all VPEs for SMP"
1376 depends on CPU_MIPS32_R2
1377 #depends on CPU_MIPS64_R2 # once there is hardware ...
1378 depends on SYS_SUPPORTS_MULTITHREADING
1379 select GENERIC_CLOCKEVENTS_BROADCAST
1380 select CPU_MIPSR2_IRQ_VI
1381 select CPU_MIPSR2_IRQ_EI
1382 select CPU_MIPSR2_SRS
1384 select NR_CPUS_DEFAULT_8
1386 select SYS_SUPPORTS_SMP
1388 This is a kernel model which is known a SMTC or lately has been
1389 marketesed into SMVP.
1396 config SYS_SUPPORTS_MULTITHREADING
1399 config MIPS_MT_FPAFF
1400 bool "Dynamic FPU affinity for FP-intensive threads"
1402 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1404 config MIPS_VPE_LOADER
1405 bool "VPE loader support."
1406 depends on SYS_SUPPORTS_MULTITHREADING
1407 select CPU_MIPSR2_IRQ_VI
1408 select CPU_MIPSR2_IRQ_EI
1409 select CPU_MIPSR2_SRS
1412 Includes a loader for loading an elf relocatable object
1413 onto another VPE and running it.
1415 config MIPS_MT_SMTC_INSTANT_REPLAY
1416 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1417 depends on MIPS_MT_SMTC && !PREEMPT
1420 SMTC pseudo-interrupts between TCs are deferred and queued
1421 if the target TC is interrupt-inhibited (IXMT). In the first
1422 SMTC prototypes, these queued IPIs were serviced on return
1423 to user mode, or on entry into the kernel idle loop. The
1424 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1425 processing, which adds runtime overhead (hence the option to turn
1426 it off), but ensures that IPIs are handled promptly even under
1427 heavy I/O interrupt load.
1429 config MIPS_MT_SMTC_IM_BACKSTOP
1430 bool "Use per-TC register bits as backstop for inhibited IM bits"
1431 depends on MIPS_MT_SMTC
1434 To support multiple TC microthreads acting as "CPUs" within
1435 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1436 during interrupt handling. To support legacy drivers and interrupt
1437 controller management code, SMTC has a "backstop" to track and
1438 if necessary restore the interrupt mask. This has some performance
1439 impact on interrupt service overhead. Disable it only if you know
1442 config MIPS_MT_SMTC_IRQAFF
1443 bool "Support IRQ affinity API"
1444 depends on MIPS_MT_SMTC
1447 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1448 for SMTC Linux kernel. Requires platform support, of which
1449 an example can be found in the MIPS kernel i8259 and Malta
1450 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1451 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1452 interrupt dispatch, and should be used only if you know what
1455 config MIPS_VPE_LOADER_TOM
1456 bool "Load VPE program into memory hidden from linux"
1457 depends on MIPS_VPE_LOADER
1460 The loader can use memory that is present but has been hidden from
1461 Linux using the kernel command line option "mem=xxMB". It's up to
1462 you to ensure the amount you put in the option and the space your
1463 program requires is less or equal to the amount physically present.
1465 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1466 config MIPS_VPE_APSP_API
1467 bool "Enable support for AP/SP API (RTLX)"
1468 depends on MIPS_VPE_LOADER
1471 config MIPS_APSP_KSPD
1473 depends on MIPS_VPE_APSP_API
1476 KSPD is a kernel daemon that accepts syscall requests from the SP
1477 side, actions them and returns the results. It also handles the
1478 "exit" syscall notifying other kernel modules the SP program is
1479 exiting. You probably want to say yes here.
1481 config SB1_PASS_1_WORKAROUNDS
1483 depends on CPU_SB1_PASS_1
1486 config SB1_PASS_2_WORKAROUNDS
1488 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1491 config SB1_PASS_2_1_WORKAROUNDS
1493 depends on CPU_SB1 && CPU_SB1_PASS_2
1496 config 64BIT_PHYS_ADDR
1502 config CPU_HAS_SMARTMIPS
1503 depends on SYS_SUPPORTS_SMARTMIPS
1504 bool "Support for the SmartMIPS ASE"
1506 SmartMIPS is a extension of the MIPS32 architecture aimed at
1507 increased security at both hardware and software level for
1508 smartcards. Enabling this option will allow proper use of the
1509 SmartMIPS instructions by Linux applications. However a kernel with
1510 this option will not work on a MIPS core without SmartMIPS core. If
1511 you don't know you probably don't have SmartMIPS and should say N
1517 config 64BIT_CONTEXT
1518 bool "Save 64bit integer registers"
1519 depends on 32BIT && CPU_LOONGSON2
1521 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1522 registers can still be accessed as 64bit, mainly for multimedia
1523 instructions. We must have all 64bit save/restored to make sure
1524 those instructions to get correct result.
1527 # Vectored interrupt mode is an R2 feature
1529 config CPU_MIPSR2_IRQ_VI
1533 # Extended interrupt mode is an R2 feature
1535 config CPU_MIPSR2_IRQ_EI
1539 # Shadow registers are an R2 feature
1541 config CPU_MIPSR2_SRS
1546 depends on !CPU_R3000
1549 config GENERIC_CLOCKEVENTS_BROADCAST
1553 # Use the generic interrupt handling code in kernel/irq/:
1555 config GENERIC_HARDIRQS
1559 config GENERIC_IRQ_PROBE
1567 # - Highmem only makes sense for the 32-bit kernel.
1568 # - The current highmem code will only work properly on physically indexed
1569 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1570 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1571 # moment we protect the user and offer the highmem option only on machines
1572 # where it's known to be safe. This will not offer highmem on a few systems
1573 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1574 # indexed CPUs but we're playing safe.
1575 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1576 # know they might have memory configurations that could make use of highmem
1580 bool "High Memory Support"
1581 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1583 config CPU_SUPPORTS_HIGHMEM
1586 config SYS_SUPPORTS_HIGHMEM
1589 config SYS_SUPPORTS_SMARTMIPS
1592 config ARCH_FLATMEM_ENABLE
1596 config ARCH_DISCONTIGMEM_ENABLE
1598 default y if SGI_IP27
1600 Say Y to support efficient handling of discontiguous physical memory,
1601 for architectures which are either NUMA (Non-Uniform Memory Access)
1602 or have huge holes in the physical address space for other reasons.
1603 See <file:Documentation/vm/numa> for more.
1605 config ARCH_SPARSEMEM_ENABLE
1607 select SPARSEMEM_STATIC
1611 depends on SYS_SUPPORTS_NUMA
1613 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1614 Access). This option improves performance on systems with more
1615 than two nodes; on two node systems it is generally better to
1616 leave it disabled; on single node systems disable this option
1619 config SYS_SUPPORTS_NUMA
1625 depends on NEED_MULTIPLE_NODES
1630 bool "Multi-Processing support"
1631 depends on SYS_SUPPORTS_SMP
1634 This enables support for systems with more than one CPU. If you have
1635 a system with only one CPU, like most personal computers, say N. If
1636 you have a system with more than one CPU, say Y.
1638 If you say N here, the kernel will run on single and multiprocessor
1639 machines, but will use only one CPU of a multiprocessor machine. If
1640 you say Y here, the kernel will run on many, but not all,
1641 singleprocessor machines. On a singleprocessor machine, the kernel
1642 will run faster if you say N here.
1644 People using multiprocessor machines who say Y here should also say
1645 Y to "Enhanced Real Time Clock Support", below.
1647 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1648 available at <http://www.tldp.org/docs.html#howto>.
1650 If you don't know what to do here, say N.
1652 config SYS_SUPPORTS_SMP
1655 config NR_CPUS_DEFAULT_1
1658 config NR_CPUS_DEFAULT_2
1661 config NR_CPUS_DEFAULT_4
1664 config NR_CPUS_DEFAULT_8
1667 config NR_CPUS_DEFAULT_16
1670 config NR_CPUS_DEFAULT_32
1673 config NR_CPUS_DEFAULT_64
1677 int "Maximum number of CPUs (2-64)"
1678 range 1 64 if NR_CPUS_DEFAULT_1
1680 default "1" if NR_CPUS_DEFAULT_1
1681 default "2" if NR_CPUS_DEFAULT_2
1682 default "4" if NR_CPUS_DEFAULT_4
1683 default "8" if NR_CPUS_DEFAULT_8
1684 default "16" if NR_CPUS_DEFAULT_16
1685 default "32" if NR_CPUS_DEFAULT_32
1686 default "64" if NR_CPUS_DEFAULT_64
1688 This allows you to specify the maximum number of CPUs which this
1689 kernel will support. The maximum supported value is 32 for 32-bit
1690 kernel and 64 for 64-bit kernels; the minimum value which makes
1691 sense is 1 for Qemu (useful only for kernel debugging purposes)
1692 and 2 for all others.
1694 This is purely to save memory - each supported CPU adds
1695 approximately eight kilobytes to the kernel image. For best
1696 performance should round up your number of processors to the next
1700 # Timer Interrupt Frequency Configuration
1704 prompt "Timer frequency"
1707 Allows the configuration of the timer frequency.
1710 bool "48 HZ" if SYS_SUPPORTS_48HZ
1713 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1716 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1719 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1722 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1725 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1728 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1732 config SYS_SUPPORTS_48HZ
1735 config SYS_SUPPORTS_100HZ
1738 config SYS_SUPPORTS_128HZ
1741 config SYS_SUPPORTS_250HZ
1744 config SYS_SUPPORTS_256HZ
1747 config SYS_SUPPORTS_1000HZ
1750 config SYS_SUPPORTS_1024HZ
1753 config SYS_SUPPORTS_ARBIT_HZ
1755 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1756 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1757 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1758 !SYS_SUPPORTS_1024HZ
1763 default 100 if HZ_100
1764 default 128 if HZ_128
1765 default 250 if HZ_250
1766 default 256 if HZ_256
1767 default 1000 if HZ_1000
1768 default 1024 if HZ_1024
1770 source "kernel/Kconfig.preempt"
1772 config MIPS_INSANE_LARGE
1773 bool "Support for large 64-bit configurations"
1774 depends on CPU_R10000 && 64BIT
1776 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1777 previous 64-bit processors which only supported 40 bit / 1TB. If you
1778 need processes of more than 1TB virtual address space, say Y here.
1779 This will result in additional memory usage, so it is not
1780 recommended for normal users.
1783 bool "Kexec system call (EXPERIMENTAL)"
1784 depends on EXPERIMENTAL
1786 kexec is a system call that implements the ability to shutdown your
1787 current kernel, and to start another kernel. It is like a reboot
1788 but it is independent of the system firmware. And like a reboot
1789 you can start any kernel with it, not just Linux.
1791 The name comes from the similiarity to the exec system call.
1793 It is an ongoing process to be certain the hardware in a machine
1794 is properly shutdown, so do not be surprised if this code does not
1795 initially work for you. It may help to enable device hotplugging
1796 support. As of this writing the exact hardware interface is
1797 strongly in flux, so no good recommendation can be made.
1800 bool "Enable seccomp to safely compute untrusted bytecode"
1804 This kernel feature is useful for number crunching applications
1805 that may need to compute untrusted bytecode during their
1806 execution. By using pipes or other transports made available to
1807 the process as file descriptors supporting the read/write
1808 syscalls, it's possible to isolate those applications in
1809 their own address space using seccomp. Once seccomp is
1810 enabled via /proc/<pid>/seccomp, it cannot be disabled
1811 and the task is only allowed to execute a few safe syscalls
1812 defined by each seccomp mode.
1814 If unsure, say Y. Only embedded should say N here.
1818 config RWSEM_GENERIC_SPINLOCK
1822 config LOCKDEP_SUPPORT
1826 config STACKTRACE_SUPPORT
1830 source "init/Kconfig"
1832 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1840 bool "Support for PCI controller"
1841 depends on HW_HAS_PCI
1844 Find out whether you have a PCI motherboard. PCI is the name of a
1845 bus system, i.e. the way the CPU talks to the other stuff inside
1846 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1849 The PCI-HOWTO, available from
1850 <http://www.tldp.org/docs.html#howto>, contains valuable
1851 information about which PCI hardware does work under Linux and which
1857 source "drivers/pci/Kconfig"
1860 # ISA support is now enabled via select. Too many systems still have the one
1861 # or other ISA chip on the board that users don't know about so don't expect
1862 # users to choose the right thing ...
1869 depends on HW_HAS_EISA
1871 select GENERIC_ISA_DMA
1873 The Extended Industry Standard Architecture (EISA) bus was
1874 developed as an open alternative to the IBM MicroChannel bus.
1876 The EISA bus provided some of the features of the IBM MicroChannel
1877 bus while maintaining backward compatibility with cards made for
1878 the older ISA bus. The EISA bus saw limited use between 1988 and
1879 1995 when it was made obsolete by the PCI bus.
1881 Say Y here if you are building a kernel for an EISA-based machine.
1885 source "drivers/eisa/Kconfig"
1888 bool "TURBOchannel support"
1889 depends on MACH_DECSTATION
1891 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1892 processors. Documentation on writing device drivers for TurboChannel
1894 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1897 # bool "Access.Bus support"
1910 source "drivers/pcmcia/Kconfig"
1912 source "drivers/pci/hotplug/Kconfig"
1916 menu "Executable file formats"
1918 source "fs/Kconfig.binfmt"
1924 bool "Include IRIX binary compatibility"
1925 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1927 config MIPS32_COMPAT
1928 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1931 Select this option if you want Linux/MIPS 32-bit binary
1932 compatibility. Since all software available for Linux/MIPS is
1933 currently 32-bit you should say Y here.
1937 depends on MIPS32_COMPAT
1940 config SYSVIPC_COMPAT
1942 depends on COMPAT && SYSVIPC
1946 bool "Kernel support for o32 binaries"
1947 depends on MIPS32_COMPAT
1949 Select this option if you want to run o32 binaries. These are pure
1950 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1951 existing binaries are in this format.
1956 bool "Kernel support for n32 binaries"
1957 depends on MIPS32_COMPAT
1959 Select this option if you want to run n32 binaries. These are
1960 64-bit binaries using 32-bit quantities for addressing and certain
1961 data that would normally be 64-bit. They are used in special
1968 default y if MIPS32_O32 || MIPS32_N32
1972 menu "Power management options"
1974 source "kernel/power/Kconfig"
1978 source "net/Kconfig"
1980 source "drivers/Kconfig"
1984 source "arch/mips/oprofile/Kconfig"
1986 source "arch/mips/Kconfig.debug"
1988 source "security/Kconfig"
1990 source "crypto/Kconfig"
1992 source "lib/Kconfig"