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.
49 select DMA_NONCOHERENT
53 select PCI_GT64XXX_PCI0
54 select SYS_HAS_CPU_NEVADA
55 select SYS_HAS_EARLY_PRINTK
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
58 select SYS_SUPPORTS_LITTLE_ENDIAN
59 select GENERIC_HARDIRQS_NO__DO_IRQ
61 config MACH_DECSTATION
64 select DMA_NONCOHERENT
67 select SYS_HAS_CPU_R3000
68 select SYS_HAS_CPU_R4X00
69 select SYS_SUPPORTS_32BIT_KERNEL
70 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
71 select SYS_SUPPORTS_LITTLE_ENDIAN
72 select SYS_SUPPORTS_128HZ
73 select SYS_SUPPORTS_256HZ
74 select SYS_SUPPORTS_1024HZ
76 This enables support for DEC's MIPS based workstations. For details
77 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
78 DECstation porting pages on <http://decstation.unix-ag.org/>.
80 If you have one of the following DECstation Models you definitely
81 want to choose R4xx0 for the CPU Type:
88 otherwise choose R3000.
91 bool "Jazz family of machines"
94 select ARCH_MAY_HAVE_PC_FDC
95 select GENERIC_ISA_DMA
99 select SYS_HAS_CPU_R4X00
100 select SYS_SUPPORTS_32BIT_KERNEL
101 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
102 select SYS_SUPPORTS_100HZ
103 select GENERIC_HARDIRQS_NO__DO_IRQ
105 This a family of machines based on the MIPS R4030 chipset which was
106 used by several vendors to build RISC/os and Windows NT workstations.
107 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
108 Olivetti M700-10 workstations.
111 bool "LASAT Networks platforms"
112 select DMA_NONCOHERENT
113 select SYS_HAS_EARLY_PRINTK
115 select PCI_GT64XXX_PCI0
117 select R5000_CPU_SCACHE
118 select SYS_HAS_CPU_R5000
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
121 select SYS_SUPPORTS_LITTLE_ENDIAN
122 select GENERIC_HARDIRQS_NO__DO_IRQ
125 bool "Lemote Fulong mini-PC"
126 select ARCH_SPARSEMEM_ENABLE
127 select SYS_HAS_CPU_LOONGSON2
128 select DMA_NONCOHERENT
131 select HAVE_STD_PC_SERIAL_PORT
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_64BIT_KERNEL
138 select SYS_SUPPORTS_LITTLE_ENDIAN
139 select SYS_SUPPORTS_HIGHMEM
140 select SYS_HAS_EARLY_PRINTK
141 select GENERIC_HARDIRQS_NO__DO_IRQ
142 select GENERIC_ISA_DMA_SUPPORT_BROKEN
145 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
149 bool "MIPS Atlas board"
151 select DMA_NONCOHERENT
152 select SYS_HAS_EARLY_PRINTK
155 select MIPS_BOARDS_GEN
157 select PCI_GT64XXX_PCI0
159 select RM7000_CPU_SCACHE
161 select SYS_HAS_CPU_MIPS32_R1
162 select SYS_HAS_CPU_MIPS32_R2
163 select SYS_HAS_CPU_MIPS64_R1
164 select SYS_HAS_CPU_NEVADA
165 select SYS_HAS_CPU_RM7000
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL
168 select SYS_SUPPORTS_BIG_ENDIAN
169 select SYS_SUPPORTS_LITTLE_ENDIAN
170 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
171 select SYS_SUPPORTS_SMARTMIPS
172 select GENERIC_HARDIRQS_NO__DO_IRQ
174 This enables support for the MIPS Technologies Atlas evaluation
178 bool "MIPS Malta board"
179 select ARCH_MAY_HAVE_PC_FDC
181 select DMA_NONCOHERENT
182 select GENERIC_ISA_DMA
186 select MIPS_BOARDS_GEN
188 select MIPS_CPU_SCACHE
189 select PCI_GT64XXX_PCI0
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_HAS_EARLY_PRINTK
198 select SYS_SUPPORTS_32BIT_KERNEL
199 select SYS_SUPPORTS_64BIT_KERNEL
200 select SYS_SUPPORTS_BIG_ENDIAN
201 select SYS_SUPPORTS_LITTLE_ENDIAN
202 select SYS_SUPPORTS_MULTITHREADING
203 select SYS_SUPPORTS_SMARTMIPS
205 This enables support for the MIPS Technologies Malta evaluation
209 bool "MIPS SEAD board"
211 select DMA_NONCOHERENT
212 select SYS_HAS_EARLY_PRINTK
213 select MIPS_BOARDS_GEN
214 select SYS_HAS_CPU_MIPS32_R1
215 select SYS_HAS_CPU_MIPS32_R2
216 select SYS_HAS_CPU_MIPS64_R1
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_LITTLE_ENDIAN
221 select SYS_SUPPORTS_SMARTMIPS
223 This enables support for the MIPS Technologies SEAD evaluation
227 bool 'MIPS simulator (MIPSsim)'
228 select DMA_NONCOHERENT
229 select SYS_HAS_EARLY_PRINTK
232 select SYS_HAS_CPU_MIPS32_R1
233 select SYS_HAS_CPU_MIPS32_R2
234 select SYS_HAS_EARLY_PRINTK
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_BIG_ENDIAN
237 select SYS_SUPPORTS_MULTITHREADING
238 select SYS_SUPPORTS_LITTLE_ENDIAN
240 This option enables support for MIPS Technologies MIPSsim software
244 bool "NEC EMMA2RH Mark-eins"
245 select DMA_NONCOHERENT
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_BIG_ENDIAN
251 select SYS_SUPPORTS_LITTLE_ENDIAN
252 select SYS_HAS_CPU_R5000
254 This enables support for the R5432-based NEC Mark-eins
255 boards with R5500 CPU.
258 bool "NEC VR4100 series based machines"
259 select SYS_HAS_CPU_VR41XX
260 select GENERIC_HARDIRQS_NO__DO_IRQ
263 bool "Philips PNX8550 based JBS board"
265 select SYS_SUPPORTS_LITTLE_ENDIAN
267 config PNX8550_STB810
268 bool "Philips PNX8550 based STB810 board"
270 select SYS_SUPPORTS_LITTLE_ENDIAN
273 bool "PMC-Sierra MSP chipsets"
274 depends on EXPERIMENTAL
275 select DMA_NONCOHERENT
277 select NO_EXCEPT_FILL
279 select SYS_HAS_CPU_MIPS32_R1
280 select SYS_HAS_CPU_MIPS32_R2
281 select SYS_SUPPORTS_32BIT_KERNEL
282 select SYS_SUPPORTS_BIG_ENDIAN
283 select SYS_SUPPORTS_KGDB
286 select SERIAL_8250_CONSOLE
288 This adds support for the PMC-Sierra family of Multi-Service
289 Processor System-On-A-Chips. These parts include a number
290 of integrated peripherals, interfaces and DSPs in addition to
291 a variety of MIPS cores.
294 bool "PMC-Sierra Yosemite eval board"
301 select SYS_HAS_CPU_RM9000
302 select SYS_HAS_EARLY_PRINTK
303 select SYS_SUPPORTS_32BIT_KERNEL
304 select SYS_SUPPORTS_64BIT_KERNEL
305 select SYS_SUPPORTS_BIG_ENDIAN
306 select SYS_SUPPORTS_HIGHMEM
307 select SYS_SUPPORTS_KGDB
308 select SYS_SUPPORTS_SMP
310 Yosemite is an evaluation board for the RM9000x2 processor
311 manufactured by PMC-Sierra.
316 select GENERIC_ISA_DMA
317 select HAVE_STD_PC_SERIAL_PORT
322 select SYS_HAS_CPU_MIPS32_R1
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select SYS_SUPPORTS_LITTLE_ENDIAN
326 select ARCH_SPARSEMEM_ENABLE
327 select GENERIC_HARDIRQS_NO__DO_IRQ
328 select NR_CPUS_DEFAULT_1
329 select SYS_SUPPORTS_SMP
331 Qemu is a software emulator which among other architectures also
332 can simulate a MIPS32 4Kc system. This patch adds support for the
333 system architecture that currently is being simulated by Qemu. It
334 will eventually be removed again when Qemu has the capability to
335 simulate actual MIPS hardware platforms. More information on Qemu
336 can be found at http://www.linux-mips.org/wiki/Qemu.
339 bool "SGI IP22 (Indy/Indigo2)"
343 select DMA_NONCOHERENT
345 select IP22_CPU_SCACHE
347 select GENERIC_ISA_DMA_SUPPORT_BROKEN
349 select SYS_HAS_CPU_R4X00
350 select SYS_HAS_CPU_R5000
351 select SYS_HAS_EARLY_PRINTK
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL
354 select SYS_SUPPORTS_BIG_ENDIAN
356 This are the SGI Indy, Challenge S and Indigo2, as well as certain
357 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
358 that runs on these, say Y here.
361 bool "SGI IP27 (Origin200/2000)"
366 select SYS_HAS_EARLY_PRINTK
368 select NR_CPUS_DEFAULT_64
370 select SYS_HAS_CPU_R10000
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_BIG_ENDIAN
373 select SYS_SUPPORTS_KGDB
374 select SYS_SUPPORTS_NUMA
375 select SYS_SUPPORTS_SMP
376 select GENERIC_HARDIRQS_NO__DO_IRQ
378 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
379 workstations. To compile a Linux kernel that runs on these, say Y
387 select DMA_NONCOHERENT
389 select R5000_CPU_SCACHE
390 select RM7000_CPU_SCACHE
391 select SYS_HAS_CPU_R5000
392 select SYS_HAS_CPU_R10000 if BROKEN
393 select SYS_HAS_CPU_RM7000
394 select SYS_HAS_CPU_NEVADA
395 select SYS_SUPPORTS_64BIT_KERNEL
396 select SYS_SUPPORTS_BIG_ENDIAN
398 If you want this kernel to run on SGI O2 workstation, say Y here.
401 bool "Sibyte BCM91120C-CRhine"
402 depends on EXPERIMENTAL
405 select SIBYTE_BCM1120
407 select SYS_HAS_CPU_SB1
408 select SYS_SUPPORTS_BIG_ENDIAN
409 select SYS_SUPPORTS_LITTLE_ENDIAN
412 bool "Sibyte BCM91120x-Carmel"
413 depends on EXPERIMENTAL
416 select SIBYTE_BCM1120
418 select SYS_HAS_CPU_SB1
419 select SYS_SUPPORTS_BIG_ENDIAN
420 select SYS_SUPPORTS_LITTLE_ENDIAN
423 bool "Sibyte BCM91125C-CRhone"
424 depends on EXPERIMENTAL
427 select SIBYTE_BCM1125
429 select SYS_HAS_CPU_SB1
430 select SYS_SUPPORTS_BIG_ENDIAN
431 select SYS_SUPPORTS_HIGHMEM
432 select SYS_SUPPORTS_LITTLE_ENDIAN
435 bool "Sibyte BCM91125E-Rhone"
436 depends on EXPERIMENTAL
439 select SIBYTE_BCM1125H
441 select SYS_HAS_CPU_SB1
442 select SYS_SUPPORTS_BIG_ENDIAN
443 select SYS_SUPPORTS_LITTLE_ENDIAN
446 bool "Sibyte BCM91250A-SWARM"
449 select NR_CPUS_DEFAULT_2
452 select SYS_HAS_CPU_SB1
453 select SYS_SUPPORTS_BIG_ENDIAN
454 select SYS_SUPPORTS_HIGHMEM
455 select SYS_SUPPORTS_KGDB
456 select SYS_SUPPORTS_LITTLE_ENDIAN
458 config SIBYTE_LITTLESUR
459 bool "Sibyte BCM91250C2-LittleSur"
460 depends on EXPERIMENTAL
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_LITTLE_ENDIAN
471 config SIBYTE_SENTOSA
472 bool "Sibyte BCM91250E-Sentosa"
473 depends on EXPERIMENTAL
476 select NR_CPUS_DEFAULT_2
479 select SYS_HAS_CPU_SB1
480 select SYS_SUPPORTS_BIG_ENDIAN
481 select SYS_SUPPORTS_LITTLE_ENDIAN
483 config SIBYTE_PTSWARM
484 bool "Sibyte BCM91250PT-PTSWARM"
485 depends on EXPERIMENTAL
488 select NR_CPUS_DEFAULT_2
491 select SYS_HAS_CPU_SB1
492 select SYS_SUPPORTS_BIG_ENDIAN
493 select SYS_SUPPORTS_HIGHMEM
494 select SYS_SUPPORTS_LITTLE_ENDIAN
497 bool "Sibyte BCM91480B-BigSur"
500 select NR_CPUS_DEFAULT_4
502 select SIBYTE_BCM1x80
504 select SYS_HAS_CPU_SB1
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_LITTLE_ENDIAN
509 bool "SNI RM200/300/400"
510 select ARC if CPU_LITTLE_ENDIAN
511 select ARC32 if CPU_LITTLE_ENDIAN
512 select ARCH_MAY_HAVE_PC_FDC
514 select DMA_NONCOHERENT
515 select GENERIC_ISA_DMA
522 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
523 select SYS_HAS_CPU_R4X00
524 select SYS_HAS_CPU_R5000
525 select SYS_HAS_CPU_R10000
526 select R5000_CPU_SCACHE
527 select SYS_HAS_EARLY_PRINTK
528 select SYS_SUPPORTS_32BIT_KERNEL
529 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
530 select SYS_SUPPORTS_BIG_ENDIAN
531 select SYS_SUPPORTS_HIGHMEM
532 select SYS_SUPPORTS_LITTLE_ENDIAN
534 The SNI RM200/300/400 are MIPS-based machines manufactured by
535 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
536 Technology and now in turn merged with Fujitsu. Say Y here to
537 support this machine type.
539 config TOSHIBA_JMR3927
540 bool "Toshiba JMR-TX3927 board"
541 select DMA_NONCOHERENT
546 select SYS_HAS_CPU_TX39XX
547 select SYS_SUPPORTS_32BIT_KERNEL
548 select SYS_SUPPORTS_LITTLE_ENDIAN
549 select SYS_SUPPORTS_BIG_ENDIAN
550 select GENERIC_HARDIRQS_NO__DO_IRQ
552 config TOSHIBA_RBTX4927
553 bool "Toshiba RBTX49[23]7 board"
554 select DMA_NONCOHERENT
555 select HAS_TXX9_SERIAL
559 select I8259 if TOSHIBA_FPCIB0
561 select SYS_HAS_CPU_TX49XX
562 select SYS_SUPPORTS_32BIT_KERNEL
563 select SYS_SUPPORTS_64BIT_KERNEL
564 select SYS_SUPPORTS_LITTLE_ENDIAN
565 select SYS_SUPPORTS_BIG_ENDIAN
566 select SYS_SUPPORTS_KGDB
567 select GENERIC_HARDIRQS_NO__DO_IRQ
569 This Toshiba board is based on the TX4927 processor. Say Y here to
570 support this machine type
572 config TOSHIBA_RBTX4938
573 bool "Toshiba RBTX4938 board"
574 select DMA_NONCOHERENT
575 select HAS_TXX9_SERIAL
580 select SYS_HAS_CPU_TX49XX
581 select SYS_SUPPORTS_32BIT_KERNEL
582 select SYS_SUPPORTS_LITTLE_ENDIAN
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_KGDB
585 select GENERIC_HARDIRQS_NO__DO_IRQ
588 This Toshiba board is based on the TX4938 processor. Say Y here to
589 support this machine type
592 bool "Wind River PPMC board"
595 select DMA_NONCOHERENT
597 select PCI_GT64XXX_PCI0
599 select SYS_HAS_CPU_MIPS32_R1
600 select SYS_HAS_CPU_MIPS32_R2
601 select SYS_HAS_CPU_MIPS64_R1
602 select SYS_HAS_CPU_NEVADA
603 select SYS_HAS_CPU_RM7000
604 select SYS_SUPPORTS_32BIT_KERNEL
605 select SYS_SUPPORTS_64BIT_KERNEL
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select SYS_SUPPORTS_LITTLE_ENDIAN
609 This enables support for the Wind River MIPS32 4KC PPMC evaluation
610 board, which is based on GT64120 bridge chip.
614 source "arch/mips/au1000/Kconfig"
615 source "arch/mips/jazz/Kconfig"
616 source "arch/mips/lasat/Kconfig"
617 source "arch/mips/pmc-sierra/Kconfig"
618 source "arch/mips/sgi-ip27/Kconfig"
619 source "arch/mips/sibyte/Kconfig"
620 source "arch/mips/tx4927/Kconfig"
621 source "arch/mips/tx4938/Kconfig"
622 source "arch/mips/vr41xx/Kconfig"
626 config RWSEM_GENERIC_SPINLOCK
630 config RWSEM_XCHGADD_ALGORITHM
633 config ARCH_HAS_ILOG2_U32
637 config ARCH_HAS_ILOG2_U64
641 config GENERIC_FIND_NEXT_BIT
645 config GENERIC_HWEIGHT
649 config GENERIC_CALIBRATE_DELAY
657 config SCHED_NO_NO_OMIT_FRAME_POINTER
661 config GENERIC_HARDIRQS_NO__DO_IRQ
666 # Select some configuration options automatically based on user selections.
671 config ARCH_MAY_HAVE_PC_FDC
685 select DMA_NEED_PCI_MAP_STATE
687 config DMA_NONCOHERENT
689 select DMA_NEED_PCI_MAP_STATE
691 config DMA_NEED_PCI_MAP_STATE
695 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
696 depends on SYS_HAS_EARLY_PRINTK
699 This option enables special console drivers which allow the kernel
700 to print messages very early in the bootup process.
702 This is useful for kernel debugging when your machine crashes very
703 early before the console code is initialized. For normal operation,
704 it is not recommended because it looks ugly on some machines and
705 doesn't cooperate with an X server. You should normally say N here,
706 unless you want to debug such a crash.
708 config SYS_HAS_EARLY_PRINTK
727 config MIPS_DISABLE_OBSOLETE_IDE
733 config GENERIC_ISA_DMA
735 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
737 config GENERIC_ISA_DMA_SUPPORT_BROKEN
739 select GENERIC_ISA_DMA
745 # Endianess selection. Sufficiently obscure so many users don't know what to
746 # answer,so we try hard to limit the available choices. Also the use of a
747 # choice statement should be more obvious to the user.
750 prompt "Endianess selection"
752 Some MIPS machines can be configured for either little or big endian
753 byte order. These modes require different kernels and a different
754 Linux distribution. In general there is one preferred byteorder for a
755 particular system but some systems are just as commonly used in the
756 one or the other endianness.
758 config CPU_BIG_ENDIAN
760 depends on SYS_SUPPORTS_BIG_ENDIAN
762 config CPU_LITTLE_ENDIAN
764 depends on SYS_SUPPORTS_LITTLE_ENDIAN
769 config SYS_SUPPORTS_APM_EMULATION
772 config SYS_SUPPORTS_BIG_ENDIAN
775 config SYS_SUPPORTS_LITTLE_ENDIAN
796 config MIPS_BOARDS_GEN
799 config PCI_GT64XXX_PCI0
802 config NO_EXCEPT_FILL
807 select HAS_TXX9_SERIAL
819 select DMA_NONCOHERENT
821 select SYS_HAS_CPU_MIPS32_R1
822 select SYS_HAS_EARLY_PRINTK
823 select SYS_SUPPORTS_32BIT_KERNEL
824 select GENERIC_HARDIRQS_NO__DO_IRQ
825 select SYS_SUPPORTS_KGDB
845 config MIPS_L1_CACHE_SHIFT
847 default "4" if MACH_DECSTATION
848 default "7" if SGI_IP27 || SNI_RM
849 default "4" if PMC_MSP4200_EVAL
852 config HAVE_STD_PC_SERIAL_PORT
856 bool "ARC console support"
857 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
861 depends on MACH_JAZZ || SNI_RM || SGI_IP32
866 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
883 depends on SYS_HAS_CPU_LOONGSON2
884 select CPU_SUPPORTS_32BIT_KERNEL
885 select CPU_SUPPORTS_64BIT_KERNEL
886 select CPU_SUPPORTS_HIGHMEM
888 The Loongson 2E processor implements the MIPS III instruction set
889 with many extensions.
892 bool "MIPS32 Release 1"
893 depends on SYS_HAS_CPU_MIPS32_R1
895 select CPU_HAS_PREFETCH
896 select CPU_SUPPORTS_32BIT_KERNEL
897 select CPU_SUPPORTS_HIGHMEM
899 Choose this option to build a kernel for release 1 or later of the
900 MIPS32 architecture. Most modern embedded systems with a 32-bit
901 MIPS processor are based on a MIPS32 processor. If you know the
902 specific type of processor in your system, choose those that one
903 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
904 Release 2 of the MIPS32 architecture is available since several
905 years so chances are you even have a MIPS32 Release 2 processor
906 in which case you should choose CPU_MIPS32_R2 instead for better
910 bool "MIPS32 Release 2"
911 depends on SYS_HAS_CPU_MIPS32_R2
913 select CPU_HAS_PREFETCH
914 select CPU_SUPPORTS_32BIT_KERNEL
915 select CPU_SUPPORTS_HIGHMEM
917 Choose this option to build a kernel for release 2 or later of the
918 MIPS32 architecture. Most modern embedded systems with a 32-bit
919 MIPS processor are based on a MIPS32 processor. If you know the
920 specific type of processor in your system, choose those that one
921 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
924 bool "MIPS64 Release 1"
925 depends on SYS_HAS_CPU_MIPS64_R1
927 select CPU_HAS_PREFETCH
928 select CPU_SUPPORTS_32BIT_KERNEL
929 select CPU_SUPPORTS_64BIT_KERNEL
930 select CPU_SUPPORTS_HIGHMEM
932 Choose this option to build a kernel for release 1 or later of the
933 MIPS64 architecture. Many modern embedded systems with a 64-bit
934 MIPS processor are based on a MIPS64 processor. If you know the
935 specific type of processor in your system, choose those that one
936 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
937 Release 2 of the MIPS64 architecture is available since several
938 years so chances are you even have a MIPS64 Release 2 processor
939 in which case you should choose CPU_MIPS64_R2 instead for better
943 bool "MIPS64 Release 2"
944 depends on SYS_HAS_CPU_MIPS64_R2
946 select CPU_HAS_PREFETCH
947 select CPU_SUPPORTS_32BIT_KERNEL
948 select CPU_SUPPORTS_64BIT_KERNEL
949 select CPU_SUPPORTS_HIGHMEM
951 Choose this option to build a kernel for release 2 or later of the
952 MIPS64 architecture. Many modern embedded systems with a 64-bit
953 MIPS processor are based on a MIPS64 processor. If you know the
954 specific type of processor in your system, choose those that one
955 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
959 depends on SYS_HAS_CPU_R3000
961 select CPU_SUPPORTS_32BIT_KERNEL
962 select CPU_SUPPORTS_HIGHMEM
964 Please make sure to pick the right CPU type. Linux/MIPS is not
965 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
966 *not* work on R4000 machines and vice versa. However, since most
967 of the supported machines have an R4000 (or similar) CPU, R4x00
968 might be a safe bet. If the resulting kernel does not work,
969 try to recompile with R3000.
973 depends on SYS_HAS_CPU_TX39XX
974 select CPU_SUPPORTS_32BIT_KERNEL
978 depends on SYS_HAS_CPU_VR41XX
979 select CPU_SUPPORTS_32BIT_KERNEL
980 select CPU_SUPPORTS_64BIT_KERNEL
982 The options selects support for the NEC VR4100 series of processors.
983 Only choose this option if you have one of these processors as a
984 kernel built with this option will not run on any other type of
985 processor or vice versa.
989 depends on SYS_HAS_CPU_R4300
991 select CPU_SUPPORTS_32BIT_KERNEL
992 select CPU_SUPPORTS_64BIT_KERNEL
994 MIPS Technologies R4300-series processors.
998 depends on SYS_HAS_CPU_R4X00
1000 select CPU_SUPPORTS_32BIT_KERNEL
1001 select CPU_SUPPORTS_64BIT_KERNEL
1003 MIPS Technologies R4000-series processors other than 4300, including
1004 the R4000, R4400, R4600, and 4700.
1008 depends on SYS_HAS_CPU_TX49XX
1010 select CPU_HAS_PREFETCH
1011 select CPU_SUPPORTS_32BIT_KERNEL
1012 select CPU_SUPPORTS_64BIT_KERNEL
1016 depends on SYS_HAS_CPU_R5000
1018 select CPU_SUPPORTS_32BIT_KERNEL
1019 select CPU_SUPPORTS_64BIT_KERNEL
1021 MIPS Technologies R5000-series processors other than the Nevada.
1025 depends on SYS_HAS_CPU_R5432
1027 select CPU_SUPPORTS_32BIT_KERNEL
1028 select CPU_SUPPORTS_64BIT_KERNEL
1032 depends on EXPERIMENTAL
1034 depends on SYS_HAS_CPU_R6000
1035 select CPU_SUPPORTS_32BIT_KERNEL
1037 MIPS Technologies R6000 and R6000A series processors. Note these
1038 processors are extremely rare and the support for them is incomplete.
1042 depends on SYS_HAS_CPU_NEVADA
1044 select CPU_SUPPORTS_32BIT_KERNEL
1045 select CPU_SUPPORTS_64BIT_KERNEL
1047 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1051 depends on EXPERIMENTAL
1052 depends on SYS_HAS_CPU_R8000
1054 select CPU_HAS_PREFETCH
1055 select CPU_SUPPORTS_64BIT_KERNEL
1057 MIPS Technologies R8000 processors. Note these processors are
1058 uncommon and the support for them is incomplete.
1062 depends on SYS_HAS_CPU_R10000
1064 select CPU_HAS_PREFETCH
1065 select CPU_SUPPORTS_32BIT_KERNEL
1066 select CPU_SUPPORTS_64BIT_KERNEL
1067 select CPU_SUPPORTS_HIGHMEM
1069 MIPS Technologies R10000-series processors.
1073 depends on SYS_HAS_CPU_RM7000
1075 select CPU_HAS_PREFETCH
1076 select CPU_SUPPORTS_32BIT_KERNEL
1077 select CPU_SUPPORTS_64BIT_KERNEL
1078 select CPU_SUPPORTS_HIGHMEM
1082 depends on SYS_HAS_CPU_RM9000
1084 select CPU_HAS_PREFETCH
1085 select CPU_SUPPORTS_32BIT_KERNEL
1086 select CPU_SUPPORTS_64BIT_KERNEL
1087 select CPU_SUPPORTS_HIGHMEM
1088 select WEAK_ORDERING
1092 depends on SYS_HAS_CPU_SB1
1094 select CPU_SUPPORTS_32BIT_KERNEL
1095 select CPU_SUPPORTS_64BIT_KERNEL
1096 select CPU_SUPPORTS_HIGHMEM
1097 select WEAK_ORDERING
1101 config SYS_HAS_CPU_LOONGSON2
1104 config SYS_HAS_CPU_MIPS32_R1
1107 config SYS_HAS_CPU_MIPS32_R2
1110 config SYS_HAS_CPU_MIPS64_R1
1113 config SYS_HAS_CPU_MIPS64_R2
1116 config SYS_HAS_CPU_R3000
1119 config SYS_HAS_CPU_TX39XX
1122 config SYS_HAS_CPU_VR41XX
1125 config SYS_HAS_CPU_R4300
1128 config SYS_HAS_CPU_R4X00
1131 config SYS_HAS_CPU_TX49XX
1134 config SYS_HAS_CPU_R5000
1137 config SYS_HAS_CPU_R5432
1140 config SYS_HAS_CPU_R6000
1143 config SYS_HAS_CPU_NEVADA
1146 config SYS_HAS_CPU_R8000
1149 config SYS_HAS_CPU_R10000
1152 config SYS_HAS_CPU_RM7000
1155 config SYS_HAS_CPU_RM9000
1158 config SYS_HAS_CPU_SB1
1162 # CPU may reorder R->R, R->W, W->R, W->W
1163 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1165 config WEAK_ORDERING
1169 # CPU may reorder reads and writes beyond LL/SC
1170 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1172 config WEAK_REORDERING_BEYOND_LLSC
1177 # These two indicate any level of the MIPS32 and MIPS64 architecture
1181 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1185 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1188 # These two indicate the revision of the architecture, either Release 1 or Release 2
1192 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1196 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1198 config SYS_SUPPORTS_32BIT_KERNEL
1200 config SYS_SUPPORTS_64BIT_KERNEL
1202 config CPU_SUPPORTS_32BIT_KERNEL
1204 config CPU_SUPPORTS_64BIT_KERNEL
1211 prompt "Kernel code model"
1213 You should only select this option if you have a workload that
1214 actually benefits from 64-bit processing or if your machine has
1215 large memory. You will only be presented a single option in this
1216 menu if your system does not support both 32-bit and 64-bit kernels.
1219 bool "32-bit kernel"
1220 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1223 Select this option if you want to build a 32-bit kernel.
1225 bool "64-bit kernel"
1226 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1228 Select this option if you want to build a 64-bit kernel.
1233 prompt "Kernel page size"
1234 default PAGE_SIZE_4KB
1236 config PAGE_SIZE_4KB
1239 This option select the standard 4kB Linux page size. On some
1240 R3000-family processors this is the only available page size. Using
1241 4kB page size will minimize memory consumption and is therefore
1242 recommended for low memory systems.
1244 config PAGE_SIZE_8KB
1246 depends on EXPERIMENTAL && CPU_R8000
1248 Using 8kB page size will result in higher performance kernel at
1249 the price of higher memory consumption. This option is available
1250 only on the R8000 processor. Not that at the time of this writing
1251 this option is still high experimental; there are also issues with
1252 compatibility of user applications.
1254 config PAGE_SIZE_16KB
1256 depends on !CPU_R3000 && !CPU_TX39XX
1258 Using 16kB page size will result in higher performance kernel at
1259 the price of higher memory consumption. This option is available on
1260 all non-R3000 family processors. Note that you will need a suitable
1261 Linux distribution to support this.
1263 config PAGE_SIZE_64KB
1265 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1267 Using 64kB page size will result in higher performance kernel at
1268 the price of higher memory consumption. This option is available on
1269 all non-R3000 family processor. Not that at the time of this
1270 writing this option is still high experimental.
1277 config IP22_CPU_SCACHE
1282 # Support for a MIPS32 / MIPS64 style S-caches
1284 config MIPS_CPU_SCACHE
1288 config R5000_CPU_SCACHE
1292 config RM7000_CPU_SCACHE
1296 config SIBYTE_DMA_PAGEOPS
1297 bool "Use DMA to clear/copy pages"
1300 Instead of using the CPU to zero and copy pages, use a Data Mover
1301 channel. These DMA channels are otherwise unused by the standard
1302 SiByte Linux port. Seems to give a small performance benefit.
1304 config CPU_HAS_PREFETCH
1308 prompt "MIPS MT options"
1310 config MIPS_MT_DISABLED
1311 bool "Disable multithreading support."
1313 Use this option if your workload can't take advantage of
1314 MIPS hardware multithreading support. On systems that don't have
1315 the option of an MT-enabled processor this option will be the only
1316 option in this menu.
1319 bool "Use 1 TC on each available VPE for SMP"
1320 depends on SYS_SUPPORTS_MULTITHREADING
1321 select CPU_MIPSR2_IRQ_VI
1322 select CPU_MIPSR2_IRQ_EI
1323 select CPU_MIPSR2_SRS
1325 select NR_CPUS_DEFAULT_2
1327 select SYS_SUPPORTS_SMP
1329 This is a kernel model which is also known a VSMP or lately
1330 has been marketesed into SMVP.
1333 bool "SMTC: Use all TCs on all VPEs for SMP"
1334 depends on CPU_MIPS32_R2
1335 #depends on CPU_MIPS64_R2 # once there is hardware ...
1336 depends on SYS_SUPPORTS_MULTITHREADING
1337 select CPU_MIPSR2_IRQ_VI
1338 select CPU_MIPSR2_IRQ_EI
1339 select CPU_MIPSR2_SRS
1341 select NR_CPUS_DEFAULT_8
1343 select SYS_SUPPORTS_SMP
1345 This is a kernel model which is known a SMTC or lately has been
1346 marketesed into SMVP.
1353 config SYS_SUPPORTS_MULTITHREADING
1356 config MIPS_MT_FPAFF
1357 bool "Dynamic FPU affinity for FP-intensive threads"
1359 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1361 config MIPS_VPE_LOADER
1362 bool "VPE loader support."
1363 depends on SYS_SUPPORTS_MULTITHREADING
1364 select CPU_MIPSR2_IRQ_VI
1365 select CPU_MIPSR2_IRQ_EI
1366 select CPU_MIPSR2_SRS
1369 Includes a loader for loading an elf relocatable object
1370 onto another VPE and running it.
1372 config MIPS_MT_SMTC_INSTANT_REPLAY
1373 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1374 depends on MIPS_MT_SMTC && !PREEMPT
1377 SMTC pseudo-interrupts between TCs are deferred and queued
1378 if the target TC is interrupt-inhibited (IXMT). In the first
1379 SMTC prototypes, these queued IPIs were serviced on return
1380 to user mode, or on entry into the kernel idle loop. The
1381 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1382 processing, which adds runtime overhead (hence the option to turn
1383 it off), but ensures that IPIs are handled promptly even under
1384 heavy I/O interrupt load.
1386 config MIPS_MT_SMTC_IM_BACKSTOP
1387 bool "Use per-TC register bits as backstop for inhibited IM bits"
1388 depends on MIPS_MT_SMTC
1391 To support multiple TC microthreads acting as "CPUs" within
1392 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1393 during interrupt handling. To support legacy drivers and interrupt
1394 controller management code, SMTC has a "backstop" to track and
1395 if necessary restore the interrupt mask. This has some performance
1396 impact on interrupt service overhead. Disable it only if you know
1399 config MIPS_MT_SMTC_IRQAFF
1400 bool "Support IRQ affinity API"
1401 depends on MIPS_MT_SMTC
1404 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1405 for SMTC Linux kernel. Requires platform support, of which
1406 an example can be found in the MIPS kernel i8259 and Malta
1407 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1408 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1409 interrupt dispatch, and should be used only if you know what
1412 config MIPS_VPE_LOADER_TOM
1413 bool "Load VPE program into memory hidden from linux"
1414 depends on MIPS_VPE_LOADER
1417 The loader can use memory that is present but has been hidden from
1418 Linux using the kernel command line option "mem=xxMB". It's up to
1419 you to ensure the amount you put in the option and the space your
1420 program requires is less or equal to the amount physically present.
1422 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1423 config MIPS_VPE_APSP_API
1424 bool "Enable support for AP/SP API (RTLX)"
1425 depends on MIPS_VPE_LOADER
1428 config MIPS_APSP_KSPD
1430 depends on MIPS_VPE_APSP_API
1433 KSPD is a kernel daemon that accepts syscall requests from the SP
1434 side, actions them and returns the results. It also handles the
1435 "exit" syscall notifying other kernel modules the SP program is
1436 exiting. You probably want to say yes here.
1438 config SB1_PASS_1_WORKAROUNDS
1440 depends on CPU_SB1_PASS_1
1443 config SB1_PASS_2_WORKAROUNDS
1445 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1448 config SB1_PASS_2_1_WORKAROUNDS
1450 depends on CPU_SB1 && CPU_SB1_PASS_2
1453 config 64BIT_PHYS_ADDR
1459 config CPU_HAS_SMARTMIPS
1460 depends on SYS_SUPPORTS_SMARTMIPS
1461 bool "Support for the SmartMIPS ASE"
1463 SmartMIPS is a extension of the MIPS32 architecture aimed at
1464 increased security at both hardware and software level for
1465 smartcards. Enabling this option will allow proper use of the
1466 SmartMIPS instructions by Linux applications. However a kernel with
1467 this option will not work on a MIPS core without SmartMIPS core. If
1468 you don't know you probably don't have SmartMIPS and should say N
1474 config 64BIT_CONTEXT
1475 bool "Save 64bit integer registers"
1476 depends on 32BIT && CPU_LOONGSON2
1478 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1479 registers can still be accessed as 64bit, mainly for multimedia
1480 instructions. We must have all 64bit save/restored to make sure
1481 those instructions to get correct result.
1484 # Vectored interrupt mode is an R2 feature
1486 config CPU_MIPSR2_IRQ_VI
1490 # Extended interrupt mode is an R2 feature
1492 config CPU_MIPSR2_IRQ_EI
1496 # Shadow registers are an R2 feature
1498 config CPU_MIPSR2_SRS
1503 depends on !CPU_R3000
1507 # Use the generic interrupt handling code in kernel/irq/:
1509 config GENERIC_HARDIRQS
1513 config GENERIC_IRQ_PROBE
1521 # - Highmem only makes sense for the 32-bit kernel.
1522 # - The current highmem code will only work properly on physically indexed
1523 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1524 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1525 # moment we protect the user and offer the highmem option only on machines
1526 # where it's known to be safe. This will not offer highmem on a few systems
1527 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1528 # indexed CPUs but we're playing safe.
1529 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1530 # know they might have memory configurations that could make use of highmem
1534 bool "High Memory Support"
1535 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1537 config CPU_SUPPORTS_HIGHMEM
1540 config SYS_SUPPORTS_HIGHMEM
1543 config SYS_SUPPORTS_SMARTMIPS
1546 config ARCH_FLATMEM_ENABLE
1550 config ARCH_DISCONTIGMEM_ENABLE
1552 default y if SGI_IP27
1554 Say Y to support efficient handling of discontiguous physical memory,
1555 for architectures which are either NUMA (Non-Uniform Memory Access)
1556 or have huge holes in the physical address space for other reasons.
1557 See <file:Documentation/vm/numa> for more.
1559 config ARCH_SPARSEMEM_ENABLE
1561 select SPARSEMEM_STATIC
1565 depends on SYS_SUPPORTS_NUMA
1567 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1568 Access). This option improves performance on systems with more
1569 than two nodes; on two node systems it is generally better to
1570 leave it disabled; on single node systems disable this option
1573 config SYS_SUPPORTS_NUMA
1579 depends on NEED_MULTIPLE_NODES
1584 bool "Multi-Processing support"
1585 depends on SYS_SUPPORTS_SMP
1588 This enables support for systems with more than one CPU. If you have
1589 a system with only one CPU, like most personal computers, say N. If
1590 you have a system with more than one CPU, say Y.
1592 If you say N here, the kernel will run on single and multiprocessor
1593 machines, but will use only one CPU of a multiprocessor machine. If
1594 you say Y here, the kernel will run on many, but not all,
1595 singleprocessor machines. On a singleprocessor machine, the kernel
1596 will run faster if you say N here.
1598 People using multiprocessor machines who say Y here should also say
1599 Y to "Enhanced Real Time Clock Support", below.
1601 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1602 available at <http://www.tldp.org/docs.html#howto>.
1604 If you don't know what to do here, say N.
1606 config SYS_SUPPORTS_SMP
1609 config NR_CPUS_DEFAULT_1
1612 config NR_CPUS_DEFAULT_2
1615 config NR_CPUS_DEFAULT_4
1618 config NR_CPUS_DEFAULT_8
1621 config NR_CPUS_DEFAULT_16
1624 config NR_CPUS_DEFAULT_32
1627 config NR_CPUS_DEFAULT_64
1631 int "Maximum number of CPUs (2-64)"
1632 range 1 64 if NR_CPUS_DEFAULT_1
1634 default "1" if NR_CPUS_DEFAULT_1
1635 default "2" if NR_CPUS_DEFAULT_2
1636 default "4" if NR_CPUS_DEFAULT_4
1637 default "8" if NR_CPUS_DEFAULT_8
1638 default "16" if NR_CPUS_DEFAULT_16
1639 default "32" if NR_CPUS_DEFAULT_32
1640 default "64" if NR_CPUS_DEFAULT_64
1642 This allows you to specify the maximum number of CPUs which this
1643 kernel will support. The maximum supported value is 32 for 32-bit
1644 kernel and 64 for 64-bit kernels; the minimum value which makes
1645 sense is 1 for Qemu (useful only for kernel debugging purposes)
1646 and 2 for all others.
1648 This is purely to save memory - each supported CPU adds
1649 approximately eight kilobytes to the kernel image. For best
1650 performance should round up your number of processors to the next
1654 # Timer Interrupt Frequency Configuration
1658 prompt "Timer frequency"
1661 Allows the configuration of the timer frequency.
1664 bool "48 HZ" if SYS_SUPPORTS_48HZ
1667 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1670 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1673 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1676 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1679 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1682 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1686 config SYS_SUPPORTS_48HZ
1689 config SYS_SUPPORTS_100HZ
1692 config SYS_SUPPORTS_128HZ
1695 config SYS_SUPPORTS_250HZ
1698 config SYS_SUPPORTS_256HZ
1701 config SYS_SUPPORTS_1000HZ
1704 config SYS_SUPPORTS_1024HZ
1707 config SYS_SUPPORTS_ARBIT_HZ
1709 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1710 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1711 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1712 !SYS_SUPPORTS_1024HZ
1717 default 100 if HZ_100
1718 default 128 if HZ_128
1719 default 250 if HZ_250
1720 default 256 if HZ_256
1721 default 1000 if HZ_1000
1722 default 1024 if HZ_1024
1724 source "kernel/Kconfig.preempt"
1726 config MIPS_INSANE_LARGE
1727 bool "Support for large 64-bit configurations"
1728 depends on CPU_R10000 && 64BIT
1730 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1731 previous 64-bit processors which only supported 40 bit / 1TB. If you
1732 need processes of more than 1TB virtual address space, say Y here.
1733 This will result in additional memory usage, so it is not
1734 recommended for normal users.
1737 bool "Kexec system call (EXPERIMENTAL)"
1738 depends on EXPERIMENTAL
1740 kexec is a system call that implements the ability to shutdown your
1741 current kernel, and to start another kernel. It is like a reboot
1742 but it is independent of the system firmware. And like a reboot
1743 you can start any kernel with it, not just Linux.
1745 The name comes from the similiarity to the exec system call.
1747 It is an ongoing process to be certain the hardware in a machine
1748 is properly shutdown, so do not be surprised if this code does not
1749 initially work for you. It may help to enable device hotplugging
1750 support. As of this writing the exact hardware interface is
1751 strongly in flux, so no good recommendation can be made.
1754 bool "Enable seccomp to safely compute untrusted bytecode"
1758 This kernel feature is useful for number crunching applications
1759 that may need to compute untrusted bytecode during their
1760 execution. By using pipes or other transports made available to
1761 the process as file descriptors supporting the read/write
1762 syscalls, it's possible to isolate those applications in
1763 their own address space using seccomp. Once seccomp is
1764 enabled via /proc/<pid>/seccomp, it cannot be disabled
1765 and the task is only allowed to execute a few safe syscalls
1766 defined by each seccomp mode.
1768 If unsure, say Y. Only embedded should say N here.
1772 config RWSEM_GENERIC_SPINLOCK
1776 config LOCKDEP_SUPPORT
1780 config STACKTRACE_SUPPORT
1784 source "init/Kconfig"
1786 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1794 bool "Support for PCI controller"
1795 depends on HW_HAS_PCI
1797 Find out whether you have a PCI motherboard. PCI is the name of a
1798 bus system, i.e. the way the CPU talks to the other stuff inside
1799 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1802 The PCI-HOWTO, available from
1803 <http://www.tldp.org/docs.html#howto>, contains valuable
1804 information about which PCI hardware does work under Linux and which
1811 source "drivers/pci/Kconfig"
1814 # ISA support is now enabled via select. Too many systems still have the one
1815 # or other ISA chip on the board that users don't know about so don't expect
1816 # users to choose the right thing ...
1823 depends on HW_HAS_EISA
1825 select GENERIC_ISA_DMA
1827 The Extended Industry Standard Architecture (EISA) bus was
1828 developed as an open alternative to the IBM MicroChannel bus.
1830 The EISA bus provided some of the features of the IBM MicroChannel
1831 bus while maintaining backward compatibility with cards made for
1832 the older ISA bus. The EISA bus saw limited use between 1988 and
1833 1995 when it was made obsolete by the PCI bus.
1835 Say Y here if you are building a kernel for an EISA-based machine.
1839 source "drivers/eisa/Kconfig"
1842 bool "TURBOchannel support"
1843 depends on MACH_DECSTATION
1845 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1846 processors. Documentation on writing device drivers for TurboChannel
1848 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1851 # bool "Access.Bus support"
1861 source "drivers/pcmcia/Kconfig"
1863 source "drivers/pci/hotplug/Kconfig"
1867 menu "Executable file formats"
1869 source "fs/Kconfig.binfmt"
1875 bool "Include IRIX binary compatibility"
1876 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1878 config MIPS32_COMPAT
1879 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1882 Select this option if you want Linux/MIPS 32-bit binary
1883 compatibility. Since all software available for Linux/MIPS is
1884 currently 32-bit you should say Y here.
1888 depends on MIPS32_COMPAT
1891 config SYSVIPC_COMPAT
1893 depends on COMPAT && SYSVIPC
1897 bool "Kernel support for o32 binaries"
1898 depends on MIPS32_COMPAT
1900 Select this option if you want to run o32 binaries. These are pure
1901 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1902 existing binaries are in this format.
1907 bool "Kernel support for n32 binaries"
1908 depends on MIPS32_COMPAT
1910 Select this option if you want to run n32 binaries. These are
1911 64-bit binaries using 32-bit quantities for addressing and certain
1912 data that would normally be 64-bit. They are used in special
1919 default y if MIPS32_O32 || MIPS32_N32
1923 menu "Power management options"
1925 source "kernel/power/Kconfig"
1929 source "net/Kconfig"
1931 source "drivers/Kconfig"
1935 source "arch/mips/oprofile/Kconfig"
1937 source "arch/mips/Kconfig.debug"
1939 source "security/Kconfig"
1941 source "crypto/Kconfig"
1943 source "lib/Kconfig"