4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "Alchemy processor based machines"
22 bool "Basler eXcite smart camera"
29 select SYS_HAS_CPU_RM9000
30 select SYS_SUPPORTS_32BIT_KERNEL
31 select SYS_SUPPORTS_BIG_ENDIAN
32 select SYS_SUPPORTS_KGDB
34 The eXcite is a smart camera platform manufactured by
35 Basler Vision Technologies AG.
37 config BASLER_EXCITE_PROTOTYPE
38 bool "Support for pre-release units"
39 depends on BASLER_EXCITE
42 Pre-series (prototype) units are different from later ones in
43 some ways. Select this option if you have one of these. Please
44 note that a kernel built with this option selected will not be
45 able to run on normal units.
48 bool "BCM47XX based boards"
49 select DMA_NONCOHERENT
52 select SYS_HAS_CPU_MIPS32_R1
53 select SYS_SUPPORTS_32BIT_KERNEL
54 select SYS_SUPPORTS_LITTLE_ENDIAN
56 select SSB_DRIVER_MIPS
59 Support for BCM47XX based boards
63 select DMA_NONCOHERENT
67 select PCI_GT64XXX_PCI0
68 select SYS_HAS_CPU_NEVADA
69 select SYS_HAS_EARLY_PRINTK
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
73 select GENERIC_HARDIRQS_NO__DO_IRQ
75 config MACH_DECSTATION
78 select DMA_NONCOHERENT
81 select SYS_HAS_CPU_R3000
82 select SYS_HAS_CPU_R4X00
83 select SYS_SUPPORTS_32BIT_KERNEL
84 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
85 select SYS_SUPPORTS_LITTLE_ENDIAN
86 select SYS_SUPPORTS_128HZ
87 select SYS_SUPPORTS_256HZ
88 select SYS_SUPPORTS_1024HZ
90 This enables support for DEC's MIPS based workstations. For details
91 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
92 DECstation porting pages on <http://decstation.unix-ag.org/>.
94 If you have one of the following DECstation Models you definitely
95 want to choose R4xx0 for the CPU Type:
102 otherwise choose R3000.
105 bool "Jazz family of machines"
108 select ARCH_MAY_HAVE_PC_FDC
109 select GENERIC_ISA_DMA
114 select SYS_HAS_CPU_R4X00
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
117 select SYS_SUPPORTS_100HZ
118 select GENERIC_HARDIRQS_NO__DO_IRQ
120 This a family of machines based on the MIPS R4030 chipset which was
121 used by several vendors to build RISC/os and Windows NT workstations.
122 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
123 Olivetti M700-10 workstations.
126 bool "LASAT Networks platforms"
127 select DMA_NONCOHERENT
128 select SYS_HAS_EARLY_PRINTK
130 select PCI_GT64XXX_PCI0
132 select R5000_CPU_SCACHE
133 select SYS_HAS_CPU_R5000
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
136 select SYS_SUPPORTS_LITTLE_ENDIAN
137 select GENERIC_HARDIRQS_NO__DO_IRQ
140 bool "Lemote Fulong mini-PC"
141 select ARCH_SPARSEMEM_ENABLE
142 select SYS_HAS_CPU_LOONGSON2
143 select DMA_NONCOHERENT
146 select HAVE_STD_PC_SERIAL_PORT
151 select SYS_SUPPORTS_32BIT_KERNEL
152 select SYS_SUPPORTS_64BIT_KERNEL
153 select SYS_SUPPORTS_LITTLE_ENDIAN
154 select SYS_SUPPORTS_HIGHMEM
155 select SYS_HAS_EARLY_PRINTK
156 select GENERIC_HARDIRQS_NO__DO_IRQ
157 select GENERIC_ISA_DMA_SUPPORT_BROKEN
160 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
164 bool "MIPS Atlas board"
166 select DMA_NONCOHERENT
167 select SYS_HAS_EARLY_PRINTK
170 select MIPS_BOARDS_GEN
172 select PCI_GT64XXX_PCI0
174 select RM7000_CPU_SCACHE
176 select SYS_HAS_CPU_MIPS32_R1
177 select SYS_HAS_CPU_MIPS32_R2
178 select SYS_HAS_CPU_MIPS64_R1
179 select SYS_HAS_CPU_NEVADA
180 select SYS_HAS_CPU_RM7000
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_SUPPORTS_64BIT_KERNEL
183 select SYS_SUPPORTS_BIG_ENDIAN
184 select SYS_SUPPORTS_LITTLE_ENDIAN
185 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
186 select SYS_SUPPORTS_SMARTMIPS
187 select GENERIC_HARDIRQS_NO__DO_IRQ
189 This enables support for the MIPS Technologies Atlas evaluation
193 bool "MIPS Malta board"
194 select ARCH_MAY_HAVE_PC_FDC
196 select DMA_NONCOHERENT
197 select GENERIC_ISA_DMA
201 select MIPS_BOARDS_GEN
203 select MIPS_CPU_SCACHE
204 select PCI_GT64XXX_PCI0
207 select SYS_HAS_CPU_MIPS32_R1
208 select SYS_HAS_CPU_MIPS32_R2
209 select SYS_HAS_CPU_MIPS64_R1
210 select SYS_HAS_CPU_NEVADA
211 select SYS_HAS_CPU_RM7000
212 select SYS_HAS_EARLY_PRINTK
213 select SYS_SUPPORTS_32BIT_KERNEL
214 select SYS_SUPPORTS_64BIT_KERNEL
215 select SYS_SUPPORTS_BIG_ENDIAN
216 select SYS_SUPPORTS_LITTLE_ENDIAN
217 select SYS_SUPPORTS_MULTITHREADING
218 select SYS_SUPPORTS_SMARTMIPS
220 This enables support for the MIPS Technologies Malta evaluation
224 bool "MIPS SEAD board"
226 select DMA_NONCOHERENT
227 select SYS_HAS_EARLY_PRINTK
228 select MIPS_BOARDS_GEN
229 select SYS_HAS_CPU_MIPS32_R1
230 select SYS_HAS_CPU_MIPS32_R2
231 select SYS_HAS_CPU_MIPS64_R1
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
234 select SYS_SUPPORTS_BIG_ENDIAN
235 select SYS_SUPPORTS_LITTLE_ENDIAN
236 select SYS_SUPPORTS_SMARTMIPS
238 This enables support for the MIPS Technologies SEAD evaluation
242 bool 'MIPS simulator (MIPSsim)'
243 select DMA_NONCOHERENT
244 select SYS_HAS_EARLY_PRINTK
247 select SYS_HAS_CPU_MIPS32_R1
248 select SYS_HAS_CPU_MIPS32_R2
249 select SYS_HAS_EARLY_PRINTK
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_BIG_ENDIAN
252 select SYS_SUPPORTS_MULTITHREADING
253 select SYS_SUPPORTS_LITTLE_ENDIAN
255 This option enables support for MIPS Technologies MIPSsim software
259 bool "NEC EMMA2RH Mark-eins"
260 select DMA_NONCOHERENT
264 select SYS_SUPPORTS_32BIT_KERNEL
265 select SYS_SUPPORTS_BIG_ENDIAN
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_HAS_CPU_R5000
269 This enables support for the R5432-based NEC Mark-eins
270 boards with R5500 CPU.
273 bool "NEC VR4100 series based machines"
274 select SYS_HAS_CPU_VR41XX
275 select GENERIC_HARDIRQS_NO__DO_IRQ
278 bool "Philips PNX8550 based JBS board"
280 select SYS_SUPPORTS_LITTLE_ENDIAN
282 config PNX8550_STB810
283 bool "Philips PNX8550 based STB810 board"
285 select SYS_SUPPORTS_LITTLE_ENDIAN
288 bool "PMC-Sierra MSP chipsets"
289 depends on EXPERIMENTAL
290 select DMA_NONCOHERENT
292 select NO_EXCEPT_FILL
294 select SYS_HAS_CPU_MIPS32_R1
295 select SYS_HAS_CPU_MIPS32_R2
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_BIG_ENDIAN
298 select SYS_SUPPORTS_KGDB
301 select SERIAL_8250_CONSOLE
303 This adds support for the PMC-Sierra family of Multi-Service
304 Processor System-On-A-Chips. These parts include a number
305 of integrated peripherals, interfaces and DSPs in addition to
306 a variety of MIPS cores.
309 bool "PMC-Sierra Yosemite eval board"
316 select SYS_HAS_CPU_RM9000
317 select SYS_HAS_EARLY_PRINTK
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_HIGHMEM
322 select SYS_SUPPORTS_KGDB
323 select SYS_SUPPORTS_SMP
325 Yosemite is an evaluation board for the RM9000x2 processor
326 manufactured by PMC-Sierra.
331 select GENERIC_ISA_DMA
332 select HAVE_STD_PC_SERIAL_PORT
337 select SYS_HAS_CPU_MIPS32_R1
338 select SYS_SUPPORTS_32BIT_KERNEL
339 select SYS_SUPPORTS_BIG_ENDIAN
340 select SYS_SUPPORTS_LITTLE_ENDIAN
341 select ARCH_SPARSEMEM_ENABLE
342 select GENERIC_HARDIRQS_NO__DO_IRQ
343 select NR_CPUS_DEFAULT_1
344 select SYS_SUPPORTS_SMP
346 Qemu is a software emulator which among other architectures also
347 can simulate a MIPS32 4Kc system. This patch adds support for the
348 system architecture that currently is being simulated by Qemu. It
349 will eventually be removed again when Qemu has the capability to
350 simulate actual MIPS hardware platforms. More information on Qemu
351 can be found at http://www.linux-mips.org/wiki/Qemu.
354 bool "SGI IP22 (Indy/Indigo2)"
358 select DMA_NONCOHERENT
360 select IP22_CPU_SCACHE
362 select GENERIC_ISA_DMA_SUPPORT_BROKEN
364 select SYS_HAS_CPU_R4X00
365 select SYS_HAS_CPU_R5000
366 select SYS_HAS_EARLY_PRINTK
367 select SYS_SUPPORTS_32BIT_KERNEL
368 select SYS_SUPPORTS_64BIT_KERNEL
369 select SYS_SUPPORTS_BIG_ENDIAN
371 This are the SGI Indy, Challenge S and Indigo2, as well as certain
372 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
373 that runs on these, say Y here.
376 bool "SGI IP27 (Origin200/2000)"
381 select SYS_HAS_EARLY_PRINTK
383 select NR_CPUS_DEFAULT_64
384 select SYS_HAS_CPU_R10000
385 select SYS_SUPPORTS_64BIT_KERNEL
386 select SYS_SUPPORTS_BIG_ENDIAN
387 select SYS_SUPPORTS_KGDB
388 select SYS_SUPPORTS_NUMA
389 select SYS_SUPPORTS_SMP
390 select GENERIC_HARDIRQS_NO__DO_IRQ
392 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
393 workstations. To compile a Linux kernel that runs on these, say Y
401 select DMA_NONCOHERENT
403 select R5000_CPU_SCACHE
404 select RM7000_CPU_SCACHE
405 select SYS_HAS_CPU_R5000
406 select SYS_HAS_CPU_R10000 if BROKEN
407 select SYS_HAS_CPU_RM7000
408 select SYS_HAS_CPU_NEVADA
409 select SYS_SUPPORTS_64BIT_KERNEL
410 select SYS_SUPPORTS_BIG_ENDIAN
412 If you want this kernel to run on SGI O2 workstation, say Y here.
415 bool "Sibyte BCM91120C-CRhine"
416 depends on EXPERIMENTAL
419 select SIBYTE_BCM1120
421 select SYS_HAS_CPU_SB1
422 select SYS_SUPPORTS_BIG_ENDIAN
423 select SYS_SUPPORTS_LITTLE_ENDIAN
426 bool "Sibyte BCM91120x-Carmel"
427 depends on EXPERIMENTAL
430 select SIBYTE_BCM1120
432 select SYS_HAS_CPU_SB1
433 select SYS_SUPPORTS_BIG_ENDIAN
434 select SYS_SUPPORTS_LITTLE_ENDIAN
437 bool "Sibyte BCM91125C-CRhone"
438 depends on EXPERIMENTAL
441 select SIBYTE_BCM1125
443 select SYS_HAS_CPU_SB1
444 select SYS_SUPPORTS_BIG_ENDIAN
445 select SYS_SUPPORTS_HIGHMEM
446 select SYS_SUPPORTS_LITTLE_ENDIAN
449 bool "Sibyte BCM91125E-Rhone"
450 depends on EXPERIMENTAL
453 select SIBYTE_BCM1125H
455 select SYS_HAS_CPU_SB1
456 select SYS_SUPPORTS_BIG_ENDIAN
457 select SYS_SUPPORTS_LITTLE_ENDIAN
460 bool "Sibyte BCM91250A-SWARM"
463 select NR_CPUS_DEFAULT_2
466 select SYS_HAS_CPU_SB1
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_HIGHMEM
469 select SYS_SUPPORTS_KGDB
470 select SYS_SUPPORTS_LITTLE_ENDIAN
472 config SIBYTE_LITTLESUR
473 bool "Sibyte BCM91250C2-LittleSur"
474 depends on EXPERIMENTAL
477 select NR_CPUS_DEFAULT_2
480 select SYS_HAS_CPU_SB1
481 select SYS_SUPPORTS_BIG_ENDIAN
482 select SYS_SUPPORTS_HIGHMEM
483 select SYS_SUPPORTS_LITTLE_ENDIAN
485 config SIBYTE_SENTOSA
486 bool "Sibyte BCM91250E-Sentosa"
487 depends on EXPERIMENTAL
490 select NR_CPUS_DEFAULT_2
493 select SYS_HAS_CPU_SB1
494 select SYS_SUPPORTS_BIG_ENDIAN
495 select SYS_SUPPORTS_LITTLE_ENDIAN
497 config SIBYTE_PTSWARM
498 bool "Sibyte BCM91250PT-PTSWARM"
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_HIGHMEM
508 select SYS_SUPPORTS_LITTLE_ENDIAN
511 bool "Sibyte BCM91480B-BigSur"
514 select NR_CPUS_DEFAULT_4
515 select SIBYTE_BCM1x80
517 select SYS_HAS_CPU_SB1
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_LITTLE_ENDIAN
522 bool "SNI RM200/300/400"
523 select ARC if CPU_LITTLE_ENDIAN
524 select ARC32 if CPU_LITTLE_ENDIAN
525 select ARCH_MAY_HAVE_PC_FDC
527 select DMA_NONCOHERENT
528 select GENERIC_ISA_DMA
535 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
536 select SYS_HAS_CPU_R4X00
537 select SYS_HAS_CPU_R5000
538 select SYS_HAS_CPU_R10000
539 select R5000_CPU_SCACHE
540 select SYS_HAS_EARLY_PRINTK
541 select SYS_SUPPORTS_32BIT_KERNEL
542 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
543 select SYS_SUPPORTS_BIG_ENDIAN
544 select SYS_SUPPORTS_HIGHMEM
545 select SYS_SUPPORTS_LITTLE_ENDIAN
547 The SNI RM200/300/400 are MIPS-based machines manufactured by
548 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
549 Technology and now in turn merged with Fujitsu. Say Y here to
550 support this machine type.
552 config TOSHIBA_JMR3927
553 bool "Toshiba JMR-TX3927 board"
554 select DMA_NONCOHERENT
559 select SYS_HAS_CPU_TX39XX
560 select SYS_SUPPORTS_32BIT_KERNEL
561 select SYS_SUPPORTS_LITTLE_ENDIAN
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select GENERIC_HARDIRQS_NO__DO_IRQ
565 config TOSHIBA_RBTX4927
566 bool "Toshiba RBTX49[23]7 board"
567 select DMA_NONCOHERENT
568 select HAS_TXX9_SERIAL
572 select I8259 if TOSHIBA_FPCIB0
574 select SYS_HAS_CPU_TX49XX
575 select SYS_SUPPORTS_32BIT_KERNEL
576 select SYS_SUPPORTS_64BIT_KERNEL
577 select SYS_SUPPORTS_LITTLE_ENDIAN
578 select SYS_SUPPORTS_BIG_ENDIAN
579 select SYS_SUPPORTS_KGDB
580 select GENERIC_HARDIRQS_NO__DO_IRQ
582 This Toshiba board is based on the TX4927 processor. Say Y here to
583 support this machine type
585 config TOSHIBA_RBTX4938
586 bool "Toshiba RBTX4938 board"
587 select DMA_NONCOHERENT
588 select HAS_TXX9_SERIAL
593 select SYS_HAS_CPU_TX49XX
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_LITTLE_ENDIAN
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_KGDB
598 select GENERIC_HARDIRQS_NO__DO_IRQ
601 This Toshiba board is based on the TX4938 processor. Say Y here to
602 support this machine type
605 bool "Wind River PPMC board"
608 select DMA_NONCOHERENT
610 select PCI_GT64XXX_PCI0
612 select SYS_HAS_CPU_MIPS32_R1
613 select SYS_HAS_CPU_MIPS32_R2
614 select SYS_HAS_CPU_MIPS64_R1
615 select SYS_HAS_CPU_NEVADA
616 select SYS_HAS_CPU_RM7000
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_64BIT_KERNEL
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select SYS_SUPPORTS_LITTLE_ENDIAN
622 This enables support for the Wind River MIPS32 4KC PPMC evaluation
623 board, which is based on GT64120 bridge chip.
627 source "arch/mips/au1000/Kconfig"
628 source "arch/mips/jazz/Kconfig"
629 source "arch/mips/lasat/Kconfig"
630 source "arch/mips/pmc-sierra/Kconfig"
631 source "arch/mips/sgi-ip27/Kconfig"
632 source "arch/mips/sibyte/Kconfig"
633 source "arch/mips/tx4927/Kconfig"
634 source "arch/mips/tx4938/Kconfig"
635 source "arch/mips/vr41xx/Kconfig"
639 config RWSEM_GENERIC_SPINLOCK
643 config RWSEM_XCHGADD_ALGORITHM
646 config ARCH_HAS_ILOG2_U32
650 config ARCH_HAS_ILOG2_U64
654 config GENERIC_FIND_NEXT_BIT
658 config GENERIC_HWEIGHT
662 config GENERIC_CALIBRATE_DELAY
670 config SCHED_NO_NO_OMIT_FRAME_POINTER
674 config GENERIC_HARDIRQS_NO__DO_IRQ
679 # Select some configuration options automatically based on user selections.
684 config ARCH_MAY_HAVE_PC_FDC
698 select DMA_NEED_PCI_MAP_STATE
700 config DMA_NONCOHERENT
702 select DMA_NEED_PCI_MAP_STATE
704 config DMA_NEED_PCI_MAP_STATE
708 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
709 depends on SYS_HAS_EARLY_PRINTK
712 This option enables special console drivers which allow the kernel
713 to print messages very early in the bootup process.
715 This is useful for kernel debugging when your machine crashes very
716 early before the console code is initialized. For normal operation,
717 it is not recommended because it looks ugly on some machines and
718 doesn't cooperate with an X server. You should normally say N here,
719 unless you want to debug such a crash.
721 config SYS_HAS_EARLY_PRINTK
740 config MIPS_DISABLE_OBSOLETE_IDE
746 config GENERIC_ISA_DMA
748 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
750 config GENERIC_ISA_DMA_SUPPORT_BROKEN
752 select GENERIC_ISA_DMA
758 # Endianess selection. Sufficiently obscure so many users don't know what to
759 # answer,so we try hard to limit the available choices. Also the use of a
760 # choice statement should be more obvious to the user.
763 prompt "Endianess selection"
765 Some MIPS machines can be configured for either little or big endian
766 byte order. These modes require different kernels and a different
767 Linux distribution. In general there is one preferred byteorder for a
768 particular system but some systems are just as commonly used in the
769 one or the other endianness.
771 config CPU_BIG_ENDIAN
773 depends on SYS_SUPPORTS_BIG_ENDIAN
775 config CPU_LITTLE_ENDIAN
777 depends on SYS_SUPPORTS_LITTLE_ENDIAN
782 config SYS_SUPPORTS_APM_EMULATION
785 config SYS_SUPPORTS_BIG_ENDIAN
788 config SYS_SUPPORTS_LITTLE_ENDIAN
809 config MIPS_BOARDS_GEN
812 config PCI_GT64XXX_PCI0
815 config NO_EXCEPT_FILL
820 select HAS_TXX9_SERIAL
832 select DMA_NONCOHERENT
834 select SYS_HAS_CPU_MIPS32_R1
835 select SYS_HAS_EARLY_PRINTK
836 select SYS_SUPPORTS_32BIT_KERNEL
837 select GENERIC_HARDIRQS_NO__DO_IRQ
838 select SYS_SUPPORTS_KGDB
858 config MIPS_L1_CACHE_SHIFT
860 default "4" if MACH_DECSTATION
861 default "7" if SGI_IP27 || SNI_RM
862 default "4" if PMC_MSP4200_EVAL
865 config HAVE_STD_PC_SERIAL_PORT
869 bool "ARC console support"
870 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
874 depends on MACH_JAZZ || SNI_RM || SGI_IP32
879 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
896 depends on SYS_HAS_CPU_LOONGSON2
897 select CPU_SUPPORTS_32BIT_KERNEL
898 select CPU_SUPPORTS_64BIT_KERNEL
899 select CPU_SUPPORTS_HIGHMEM
901 The Loongson 2E processor implements the MIPS III instruction set
902 with many extensions.
905 bool "MIPS32 Release 1"
906 depends on SYS_HAS_CPU_MIPS32_R1
908 select CPU_HAS_PREFETCH
909 select CPU_SUPPORTS_32BIT_KERNEL
910 select CPU_SUPPORTS_HIGHMEM
912 Choose this option to build a kernel for release 1 or later of the
913 MIPS32 architecture. Most modern embedded systems with a 32-bit
914 MIPS processor are based on a MIPS32 processor. If you know the
915 specific type of processor in your system, choose those that one
916 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
917 Release 2 of the MIPS32 architecture is available since several
918 years so chances are you even have a MIPS32 Release 2 processor
919 in which case you should choose CPU_MIPS32_R2 instead for better
923 bool "MIPS32 Release 2"
924 depends on SYS_HAS_CPU_MIPS32_R2
926 select CPU_HAS_PREFETCH
927 select CPU_SUPPORTS_32BIT_KERNEL
928 select CPU_SUPPORTS_HIGHMEM
930 Choose this option to build a kernel for release 2 or later of the
931 MIPS32 architecture. Most modern embedded systems with a 32-bit
932 MIPS processor are based on a MIPS32 processor. If you know the
933 specific type of processor in your system, choose those that one
934 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
937 bool "MIPS64 Release 1"
938 depends on SYS_HAS_CPU_MIPS64_R1
940 select CPU_HAS_PREFETCH
941 select CPU_SUPPORTS_32BIT_KERNEL
942 select CPU_SUPPORTS_64BIT_KERNEL
943 select CPU_SUPPORTS_HIGHMEM
945 Choose this option to build a kernel for release 1 or later of the
946 MIPS64 architecture. Many modern embedded systems with a 64-bit
947 MIPS processor are based on a MIPS64 processor. If you know the
948 specific type of processor in your system, choose those that one
949 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
950 Release 2 of the MIPS64 architecture is available since several
951 years so chances are you even have a MIPS64 Release 2 processor
952 in which case you should choose CPU_MIPS64_R2 instead for better
956 bool "MIPS64 Release 2"
957 depends on SYS_HAS_CPU_MIPS64_R2
959 select CPU_HAS_PREFETCH
960 select CPU_SUPPORTS_32BIT_KERNEL
961 select CPU_SUPPORTS_64BIT_KERNEL
962 select CPU_SUPPORTS_HIGHMEM
964 Choose this option to build a kernel for release 2 or later of the
965 MIPS64 architecture. Many modern embedded systems with a 64-bit
966 MIPS processor are based on a MIPS64 processor. If you know the
967 specific type of processor in your system, choose those that one
968 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
972 depends on SYS_HAS_CPU_R3000
974 select CPU_SUPPORTS_32BIT_KERNEL
975 select CPU_SUPPORTS_HIGHMEM
977 Please make sure to pick the right CPU type. Linux/MIPS is not
978 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
979 *not* work on R4000 machines and vice versa. However, since most
980 of the supported machines have an R4000 (or similar) CPU, R4x00
981 might be a safe bet. If the resulting kernel does not work,
982 try to recompile with R3000.
986 depends on SYS_HAS_CPU_TX39XX
987 select CPU_SUPPORTS_32BIT_KERNEL
991 depends on SYS_HAS_CPU_VR41XX
992 select CPU_SUPPORTS_32BIT_KERNEL
993 select CPU_SUPPORTS_64BIT_KERNEL
995 The options selects support for the NEC VR4100 series of processors.
996 Only choose this option if you have one of these processors as a
997 kernel built with this option will not run on any other type of
998 processor or vice versa.
1002 depends on SYS_HAS_CPU_R4300
1004 select CPU_SUPPORTS_32BIT_KERNEL
1005 select CPU_SUPPORTS_64BIT_KERNEL
1007 MIPS Technologies R4300-series processors.
1011 depends on SYS_HAS_CPU_R4X00
1013 select CPU_SUPPORTS_32BIT_KERNEL
1014 select CPU_SUPPORTS_64BIT_KERNEL
1016 MIPS Technologies R4000-series processors other than 4300, including
1017 the R4000, R4400, R4600, and 4700.
1021 depends on SYS_HAS_CPU_TX49XX
1023 select CPU_HAS_PREFETCH
1024 select CPU_SUPPORTS_32BIT_KERNEL
1025 select CPU_SUPPORTS_64BIT_KERNEL
1029 depends on SYS_HAS_CPU_R5000
1031 select CPU_SUPPORTS_32BIT_KERNEL
1032 select CPU_SUPPORTS_64BIT_KERNEL
1034 MIPS Technologies R5000-series processors other than the Nevada.
1038 depends on SYS_HAS_CPU_R5432
1040 select CPU_SUPPORTS_32BIT_KERNEL
1041 select CPU_SUPPORTS_64BIT_KERNEL
1045 depends on EXPERIMENTAL
1047 depends on SYS_HAS_CPU_R6000
1048 select CPU_SUPPORTS_32BIT_KERNEL
1050 MIPS Technologies R6000 and R6000A series processors. Note these
1051 processors are extremely rare and the support for them is incomplete.
1055 depends on SYS_HAS_CPU_NEVADA
1057 select CPU_SUPPORTS_32BIT_KERNEL
1058 select CPU_SUPPORTS_64BIT_KERNEL
1060 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1064 depends on EXPERIMENTAL
1065 depends on SYS_HAS_CPU_R8000
1067 select CPU_HAS_PREFETCH
1068 select CPU_SUPPORTS_64BIT_KERNEL
1070 MIPS Technologies R8000 processors. Note these processors are
1071 uncommon and the support for them is incomplete.
1075 depends on SYS_HAS_CPU_R10000
1077 select CPU_HAS_PREFETCH
1078 select CPU_SUPPORTS_32BIT_KERNEL
1079 select CPU_SUPPORTS_64BIT_KERNEL
1080 select CPU_SUPPORTS_HIGHMEM
1082 MIPS Technologies R10000-series processors.
1086 depends on SYS_HAS_CPU_RM7000
1088 select CPU_HAS_PREFETCH
1089 select CPU_SUPPORTS_32BIT_KERNEL
1090 select CPU_SUPPORTS_64BIT_KERNEL
1091 select CPU_SUPPORTS_HIGHMEM
1095 depends on SYS_HAS_CPU_RM9000
1097 select CPU_HAS_PREFETCH
1098 select CPU_SUPPORTS_32BIT_KERNEL
1099 select CPU_SUPPORTS_64BIT_KERNEL
1100 select CPU_SUPPORTS_HIGHMEM
1101 select WEAK_ORDERING
1105 depends on SYS_HAS_CPU_SB1
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_64BIT_KERNEL
1109 select CPU_SUPPORTS_HIGHMEM
1110 select WEAK_ORDERING
1114 config SYS_HAS_CPU_LOONGSON2
1117 config SYS_HAS_CPU_MIPS32_R1
1120 config SYS_HAS_CPU_MIPS32_R2
1123 config SYS_HAS_CPU_MIPS64_R1
1126 config SYS_HAS_CPU_MIPS64_R2
1129 config SYS_HAS_CPU_R3000
1132 config SYS_HAS_CPU_TX39XX
1135 config SYS_HAS_CPU_VR41XX
1138 config SYS_HAS_CPU_R4300
1141 config SYS_HAS_CPU_R4X00
1144 config SYS_HAS_CPU_TX49XX
1147 config SYS_HAS_CPU_R5000
1150 config SYS_HAS_CPU_R5432
1153 config SYS_HAS_CPU_R6000
1156 config SYS_HAS_CPU_NEVADA
1159 config SYS_HAS_CPU_R8000
1162 config SYS_HAS_CPU_R10000
1165 config SYS_HAS_CPU_RM7000
1168 config SYS_HAS_CPU_RM9000
1171 config SYS_HAS_CPU_SB1
1175 # CPU may reorder R->R, R->W, W->R, W->W
1176 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1178 config WEAK_ORDERING
1182 # CPU may reorder reads and writes beyond LL/SC
1183 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1185 config WEAK_REORDERING_BEYOND_LLSC
1190 # These two indicate any level of the MIPS32 and MIPS64 architecture
1194 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1198 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1201 # These two indicate the revision of the architecture, either Release 1 or Release 2
1205 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1209 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1211 config SYS_SUPPORTS_32BIT_KERNEL
1213 config SYS_SUPPORTS_64BIT_KERNEL
1215 config CPU_SUPPORTS_32BIT_KERNEL
1217 config CPU_SUPPORTS_64BIT_KERNEL
1224 prompt "Kernel code model"
1226 You should only select this option if you have a workload that
1227 actually benefits from 64-bit processing or if your machine has
1228 large memory. You will only be presented a single option in this
1229 menu if your system does not support both 32-bit and 64-bit kernels.
1232 bool "32-bit kernel"
1233 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1236 Select this option if you want to build a 32-bit kernel.
1238 bool "64-bit kernel"
1239 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1241 Select this option if you want to build a 64-bit kernel.
1246 prompt "Kernel page size"
1247 default PAGE_SIZE_4KB
1249 config PAGE_SIZE_4KB
1252 This option select the standard 4kB Linux page size. On some
1253 R3000-family processors this is the only available page size. Using
1254 4kB page size will minimize memory consumption and is therefore
1255 recommended for low memory systems.
1257 config PAGE_SIZE_8KB
1259 depends on EXPERIMENTAL && CPU_R8000
1261 Using 8kB page size will result in higher performance kernel at
1262 the price of higher memory consumption. This option is available
1263 only on the R8000 processor. Not that at the time of this writing
1264 this option is still high experimental; there are also issues with
1265 compatibility of user applications.
1267 config PAGE_SIZE_16KB
1269 depends on !CPU_R3000 && !CPU_TX39XX
1271 Using 16kB page size will result in higher performance kernel at
1272 the price of higher memory consumption. This option is available on
1273 all non-R3000 family processors. Note that you will need a suitable
1274 Linux distribution to support this.
1276 config PAGE_SIZE_64KB
1278 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1280 Using 64kB page size will result in higher performance kernel at
1281 the price of higher memory consumption. This option is available on
1282 all non-R3000 family processor. Not that at the time of this
1283 writing this option is still high experimental.
1290 config IP22_CPU_SCACHE
1295 # Support for a MIPS32 / MIPS64 style S-caches
1297 config MIPS_CPU_SCACHE
1301 config R5000_CPU_SCACHE
1305 config RM7000_CPU_SCACHE
1309 config SIBYTE_DMA_PAGEOPS
1310 bool "Use DMA to clear/copy pages"
1313 Instead of using the CPU to zero and copy pages, use a Data Mover
1314 channel. These DMA channels are otherwise unused by the standard
1315 SiByte Linux port. Seems to give a small performance benefit.
1317 config CPU_HAS_PREFETCH
1321 prompt "MIPS MT options"
1323 config MIPS_MT_DISABLED
1324 bool "Disable multithreading support."
1326 Use this option if your workload can't take advantage of
1327 MIPS hardware multithreading support. On systems that don't have
1328 the option of an MT-enabled processor this option will be the only
1329 option in this menu.
1332 bool "Use 1 TC on each available VPE for SMP"
1333 depends on SYS_SUPPORTS_MULTITHREADING
1334 select CPU_MIPSR2_IRQ_VI
1335 select CPU_MIPSR2_IRQ_EI
1336 select CPU_MIPSR2_SRS
1338 select NR_CPUS_DEFAULT_2
1340 select SYS_SUPPORTS_SMP
1342 This is a kernel model which is also known a VSMP or lately
1343 has been marketesed into SMVP.
1346 bool "SMTC: Use all TCs on all VPEs for SMP"
1347 depends on CPU_MIPS32_R2
1348 #depends on CPU_MIPS64_R2 # once there is hardware ...
1349 depends on SYS_SUPPORTS_MULTITHREADING
1350 select CPU_MIPSR2_IRQ_VI
1351 select CPU_MIPSR2_IRQ_EI
1352 select CPU_MIPSR2_SRS
1354 select NR_CPUS_DEFAULT_8
1356 select SYS_SUPPORTS_SMP
1358 This is a kernel model which is known a SMTC or lately has been
1359 marketesed into SMVP.
1366 config SYS_SUPPORTS_MULTITHREADING
1369 config MIPS_MT_FPAFF
1370 bool "Dynamic FPU affinity for FP-intensive threads"
1372 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1374 config MIPS_VPE_LOADER
1375 bool "VPE loader support."
1376 depends on SYS_SUPPORTS_MULTITHREADING
1377 select CPU_MIPSR2_IRQ_VI
1378 select CPU_MIPSR2_IRQ_EI
1379 select CPU_MIPSR2_SRS
1382 Includes a loader for loading an elf relocatable object
1383 onto another VPE and running it.
1385 config MIPS_MT_SMTC_INSTANT_REPLAY
1386 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1387 depends on MIPS_MT_SMTC && !PREEMPT
1390 SMTC pseudo-interrupts between TCs are deferred and queued
1391 if the target TC is interrupt-inhibited (IXMT). In the first
1392 SMTC prototypes, these queued IPIs were serviced on return
1393 to user mode, or on entry into the kernel idle loop. The
1394 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1395 processing, which adds runtime overhead (hence the option to turn
1396 it off), but ensures that IPIs are handled promptly even under
1397 heavy I/O interrupt load.
1399 config MIPS_MT_SMTC_IM_BACKSTOP
1400 bool "Use per-TC register bits as backstop for inhibited IM bits"
1401 depends on MIPS_MT_SMTC
1404 To support multiple TC microthreads acting as "CPUs" within
1405 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1406 during interrupt handling. To support legacy drivers and interrupt
1407 controller management code, SMTC has a "backstop" to track and
1408 if necessary restore the interrupt mask. This has some performance
1409 impact on interrupt service overhead. Disable it only if you know
1412 config MIPS_MT_SMTC_IRQAFF
1413 bool "Support IRQ affinity API"
1414 depends on MIPS_MT_SMTC
1417 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1418 for SMTC Linux kernel. Requires platform support, of which
1419 an example can be found in the MIPS kernel i8259 and Malta
1420 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1421 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1422 interrupt dispatch, and should be used only if you know what
1425 config MIPS_VPE_LOADER_TOM
1426 bool "Load VPE program into memory hidden from linux"
1427 depends on MIPS_VPE_LOADER
1430 The loader can use memory that is present but has been hidden from
1431 Linux using the kernel command line option "mem=xxMB". It's up to
1432 you to ensure the amount you put in the option and the space your
1433 program requires is less or equal to the amount physically present.
1435 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1436 config MIPS_VPE_APSP_API
1437 bool "Enable support for AP/SP API (RTLX)"
1438 depends on MIPS_VPE_LOADER
1441 config MIPS_APSP_KSPD
1443 depends on MIPS_VPE_APSP_API
1446 KSPD is a kernel daemon that accepts syscall requests from the SP
1447 side, actions them and returns the results. It also handles the
1448 "exit" syscall notifying other kernel modules the SP program is
1449 exiting. You probably want to say yes here.
1451 config SB1_PASS_1_WORKAROUNDS
1453 depends on CPU_SB1_PASS_1
1456 config SB1_PASS_2_WORKAROUNDS
1458 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1461 config SB1_PASS_2_1_WORKAROUNDS
1463 depends on CPU_SB1 && CPU_SB1_PASS_2
1466 config 64BIT_PHYS_ADDR
1472 config CPU_HAS_SMARTMIPS
1473 depends on SYS_SUPPORTS_SMARTMIPS
1474 bool "Support for the SmartMIPS ASE"
1476 SmartMIPS is a extension of the MIPS32 architecture aimed at
1477 increased security at both hardware and software level for
1478 smartcards. Enabling this option will allow proper use of the
1479 SmartMIPS instructions by Linux applications. However a kernel with
1480 this option will not work on a MIPS core without SmartMIPS core. If
1481 you don't know you probably don't have SmartMIPS and should say N
1487 config 64BIT_CONTEXT
1488 bool "Save 64bit integer registers"
1489 depends on 32BIT && CPU_LOONGSON2
1491 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1492 registers can still be accessed as 64bit, mainly for multimedia
1493 instructions. We must have all 64bit save/restored to make sure
1494 those instructions to get correct result.
1497 # Vectored interrupt mode is an R2 feature
1499 config CPU_MIPSR2_IRQ_VI
1503 # Extended interrupt mode is an R2 feature
1505 config CPU_MIPSR2_IRQ_EI
1509 # Shadow registers are an R2 feature
1511 config CPU_MIPSR2_SRS
1516 depends on !CPU_R3000
1520 # Use the generic interrupt handling code in kernel/irq/:
1522 config GENERIC_HARDIRQS
1526 config GENERIC_IRQ_PROBE
1534 # - Highmem only makes sense for the 32-bit kernel.
1535 # - The current highmem code will only work properly on physically indexed
1536 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1537 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1538 # moment we protect the user and offer the highmem option only on machines
1539 # where it's known to be safe. This will not offer highmem on a few systems
1540 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1541 # indexed CPUs but we're playing safe.
1542 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1543 # know they might have memory configurations that could make use of highmem
1547 bool "High Memory Support"
1548 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1550 config CPU_SUPPORTS_HIGHMEM
1553 config SYS_SUPPORTS_HIGHMEM
1556 config SYS_SUPPORTS_SMARTMIPS
1559 config ARCH_FLATMEM_ENABLE
1563 config ARCH_DISCONTIGMEM_ENABLE
1565 default y if SGI_IP27
1567 Say Y to support efficient handling of discontiguous physical memory,
1568 for architectures which are either NUMA (Non-Uniform Memory Access)
1569 or have huge holes in the physical address space for other reasons.
1570 See <file:Documentation/vm/numa> for more.
1572 config ARCH_SPARSEMEM_ENABLE
1574 select SPARSEMEM_STATIC
1578 depends on SYS_SUPPORTS_NUMA
1580 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1581 Access). This option improves performance on systems with more
1582 than two nodes; on two node systems it is generally better to
1583 leave it disabled; on single node systems disable this option
1586 config SYS_SUPPORTS_NUMA
1592 depends on NEED_MULTIPLE_NODES
1597 bool "Multi-Processing support"
1598 depends on SYS_SUPPORTS_SMP
1601 This enables support for systems with more than one CPU. If you have
1602 a system with only one CPU, like most personal computers, say N. If
1603 you have a system with more than one CPU, say Y.
1605 If you say N here, the kernel will run on single and multiprocessor
1606 machines, but will use only one CPU of a multiprocessor machine. If
1607 you say Y here, the kernel will run on many, but not all,
1608 singleprocessor machines. On a singleprocessor machine, the kernel
1609 will run faster if you say N here.
1611 People using multiprocessor machines who say Y here should also say
1612 Y to "Enhanced Real Time Clock Support", below.
1614 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1615 available at <http://www.tldp.org/docs.html#howto>.
1617 If you don't know what to do here, say N.
1619 config SYS_SUPPORTS_SMP
1622 config NR_CPUS_DEFAULT_1
1625 config NR_CPUS_DEFAULT_2
1628 config NR_CPUS_DEFAULT_4
1631 config NR_CPUS_DEFAULT_8
1634 config NR_CPUS_DEFAULT_16
1637 config NR_CPUS_DEFAULT_32
1640 config NR_CPUS_DEFAULT_64
1644 int "Maximum number of CPUs (2-64)"
1645 range 1 64 if NR_CPUS_DEFAULT_1
1647 default "1" if NR_CPUS_DEFAULT_1
1648 default "2" if NR_CPUS_DEFAULT_2
1649 default "4" if NR_CPUS_DEFAULT_4
1650 default "8" if NR_CPUS_DEFAULT_8
1651 default "16" if NR_CPUS_DEFAULT_16
1652 default "32" if NR_CPUS_DEFAULT_32
1653 default "64" if NR_CPUS_DEFAULT_64
1655 This allows you to specify the maximum number of CPUs which this
1656 kernel will support. The maximum supported value is 32 for 32-bit
1657 kernel and 64 for 64-bit kernels; the minimum value which makes
1658 sense is 1 for Qemu (useful only for kernel debugging purposes)
1659 and 2 for all others.
1661 This is purely to save memory - each supported CPU adds
1662 approximately eight kilobytes to the kernel image. For best
1663 performance should round up your number of processors to the next
1667 # Timer Interrupt Frequency Configuration
1671 prompt "Timer frequency"
1674 Allows the configuration of the timer frequency.
1677 bool "48 HZ" if SYS_SUPPORTS_48HZ
1680 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1683 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1686 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1689 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1692 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1695 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1699 config SYS_SUPPORTS_48HZ
1702 config SYS_SUPPORTS_100HZ
1705 config SYS_SUPPORTS_128HZ
1708 config SYS_SUPPORTS_250HZ
1711 config SYS_SUPPORTS_256HZ
1714 config SYS_SUPPORTS_1000HZ
1717 config SYS_SUPPORTS_1024HZ
1720 config SYS_SUPPORTS_ARBIT_HZ
1722 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1723 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1724 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1725 !SYS_SUPPORTS_1024HZ
1730 default 100 if HZ_100
1731 default 128 if HZ_128
1732 default 250 if HZ_250
1733 default 256 if HZ_256
1734 default 1000 if HZ_1000
1735 default 1024 if HZ_1024
1737 source "kernel/Kconfig.preempt"
1739 config MIPS_INSANE_LARGE
1740 bool "Support for large 64-bit configurations"
1741 depends on CPU_R10000 && 64BIT
1743 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1744 previous 64-bit processors which only supported 40 bit / 1TB. If you
1745 need processes of more than 1TB virtual address space, say Y here.
1746 This will result in additional memory usage, so it is not
1747 recommended for normal users.
1750 bool "Kexec system call (EXPERIMENTAL)"
1751 depends on EXPERIMENTAL
1753 kexec is a system call that implements the ability to shutdown your
1754 current kernel, and to start another kernel. It is like a reboot
1755 but it is independent of the system firmware. And like a reboot
1756 you can start any kernel with it, not just Linux.
1758 The name comes from the similiarity to the exec system call.
1760 It is an ongoing process to be certain the hardware in a machine
1761 is properly shutdown, so do not be surprised if this code does not
1762 initially work for you. It may help to enable device hotplugging
1763 support. As of this writing the exact hardware interface is
1764 strongly in flux, so no good recommendation can be made.
1767 bool "Enable seccomp to safely compute untrusted bytecode"
1771 This kernel feature is useful for number crunching applications
1772 that may need to compute untrusted bytecode during their
1773 execution. By using pipes or other transports made available to
1774 the process as file descriptors supporting the read/write
1775 syscalls, it's possible to isolate those applications in
1776 their own address space using seccomp. Once seccomp is
1777 enabled via /proc/<pid>/seccomp, it cannot be disabled
1778 and the task is only allowed to execute a few safe syscalls
1779 defined by each seccomp mode.
1781 If unsure, say Y. Only embedded should say N here.
1785 config RWSEM_GENERIC_SPINLOCK
1789 config LOCKDEP_SUPPORT
1793 config STACKTRACE_SUPPORT
1797 source "init/Kconfig"
1799 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1807 bool "Support for PCI controller"
1808 depends on HW_HAS_PCI
1811 Find out whether you have a PCI motherboard. PCI is the name of a
1812 bus system, i.e. the way the CPU talks to the other stuff inside
1813 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1816 The PCI-HOWTO, available from
1817 <http://www.tldp.org/docs.html#howto>, contains valuable
1818 information about which PCI hardware does work under Linux and which
1824 source "drivers/pci/Kconfig"
1827 # ISA support is now enabled via select. Too many systems still have the one
1828 # or other ISA chip on the board that users don't know about so don't expect
1829 # users to choose the right thing ...
1836 depends on HW_HAS_EISA
1838 select GENERIC_ISA_DMA
1840 The Extended Industry Standard Architecture (EISA) bus was
1841 developed as an open alternative to the IBM MicroChannel bus.
1843 The EISA bus provided some of the features of the IBM MicroChannel
1844 bus while maintaining backward compatibility with cards made for
1845 the older ISA bus. The EISA bus saw limited use between 1988 and
1846 1995 when it was made obsolete by the PCI bus.
1848 Say Y here if you are building a kernel for an EISA-based machine.
1852 source "drivers/eisa/Kconfig"
1855 bool "TURBOchannel support"
1856 depends on MACH_DECSTATION
1858 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1859 processors. Documentation on writing device drivers for TurboChannel
1861 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1864 # bool "Access.Bus support"
1874 source "drivers/pcmcia/Kconfig"
1876 source "drivers/pci/hotplug/Kconfig"
1880 menu "Executable file formats"
1882 source "fs/Kconfig.binfmt"
1888 bool "Include IRIX binary compatibility"
1889 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1891 config MIPS32_COMPAT
1892 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1895 Select this option if you want Linux/MIPS 32-bit binary
1896 compatibility. Since all software available for Linux/MIPS is
1897 currently 32-bit you should say Y here.
1901 depends on MIPS32_COMPAT
1904 config SYSVIPC_COMPAT
1906 depends on COMPAT && SYSVIPC
1910 bool "Kernel support for o32 binaries"
1911 depends on MIPS32_COMPAT
1913 Select this option if you want to run o32 binaries. These are pure
1914 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1915 existing binaries are in this format.
1920 bool "Kernel support for n32 binaries"
1921 depends on MIPS32_COMPAT
1923 Select this option if you want to run n32 binaries. These are
1924 64-bit binaries using 32-bit quantities for addressing and certain
1925 data that would normally be 64-bit. They are used in special
1932 default y if MIPS32_O32 || MIPS32_N32
1936 menu "Power management options"
1938 source "kernel/power/Kconfig"
1942 source "net/Kconfig"
1944 source "drivers/Kconfig"
1948 source "arch/mips/oprofile/Kconfig"
1950 source "arch/mips/Kconfig.debug"
1952 source "security/Kconfig"
1954 source "crypto/Kconfig"
1956 source "lib/Kconfig"