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
100 select SYS_HAS_CPU_R4X00
101 select SYS_SUPPORTS_32BIT_KERNEL
102 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
103 select SYS_SUPPORTS_100HZ
104 select GENERIC_HARDIRQS_NO__DO_IRQ
106 This a family of machines based on the MIPS R4030 chipset which was
107 used by several vendors to build RISC/os and Windows NT workstations.
108 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
109 Olivetti M700-10 workstations.
112 bool "LASAT Networks platforms"
113 select DMA_NONCOHERENT
114 select SYS_HAS_EARLY_PRINTK
116 select PCI_GT64XXX_PCI0
118 select R5000_CPU_SCACHE
119 select SYS_HAS_CPU_R5000
120 select SYS_SUPPORTS_32BIT_KERNEL
121 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select GENERIC_HARDIRQS_NO__DO_IRQ
126 bool "Lemote Fulong mini-PC"
127 select ARCH_SPARSEMEM_ENABLE
128 select SYS_HAS_CPU_LOONGSON2
129 select DMA_NONCOHERENT
132 select HAVE_STD_PC_SERIAL_PORT
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_64BIT_KERNEL
139 select SYS_SUPPORTS_LITTLE_ENDIAN
140 select SYS_SUPPORTS_HIGHMEM
141 select SYS_HAS_EARLY_PRINTK
142 select GENERIC_HARDIRQS_NO__DO_IRQ
143 select GENERIC_ISA_DMA_SUPPORT_BROKEN
146 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
150 bool "MIPS Atlas board"
152 select DMA_NONCOHERENT
153 select SYS_HAS_EARLY_PRINTK
156 select MIPS_BOARDS_GEN
158 select PCI_GT64XXX_PCI0
160 select RM7000_CPU_SCACHE
162 select SYS_HAS_CPU_MIPS32_R1
163 select SYS_HAS_CPU_MIPS32_R2
164 select SYS_HAS_CPU_MIPS64_R1
165 select SYS_HAS_CPU_NEVADA
166 select SYS_HAS_CPU_RM7000
167 select SYS_SUPPORTS_32BIT_KERNEL
168 select SYS_SUPPORTS_64BIT_KERNEL
169 select SYS_SUPPORTS_BIG_ENDIAN
170 select SYS_SUPPORTS_LITTLE_ENDIAN
171 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
172 select SYS_SUPPORTS_SMARTMIPS
173 select GENERIC_HARDIRQS_NO__DO_IRQ
175 This enables support for the MIPS Technologies Atlas evaluation
179 bool "MIPS Malta board"
180 select ARCH_MAY_HAVE_PC_FDC
182 select DMA_NONCOHERENT
183 select GENERIC_ISA_DMA
187 select MIPS_BOARDS_GEN
189 select MIPS_CPU_SCACHE
190 select PCI_GT64XXX_PCI0
193 select SYS_HAS_CPU_MIPS32_R1
194 select SYS_HAS_CPU_MIPS32_R2
195 select SYS_HAS_CPU_MIPS64_R1
196 select SYS_HAS_CPU_NEVADA
197 select SYS_HAS_CPU_RM7000
198 select SYS_HAS_EARLY_PRINTK
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_SUPPORTS_64BIT_KERNEL
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_SUPPORTS_LITTLE_ENDIAN
203 select SYS_SUPPORTS_MULTITHREADING
204 select SYS_SUPPORTS_SMARTMIPS
206 This enables support for the MIPS Technologies Malta evaluation
210 bool "MIPS SEAD board"
212 select DMA_NONCOHERENT
213 select SYS_HAS_EARLY_PRINTK
214 select MIPS_BOARDS_GEN
215 select SYS_HAS_CPU_MIPS32_R1
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_HAS_CPU_MIPS64_R1
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_LITTLE_ENDIAN
222 select SYS_SUPPORTS_SMARTMIPS
224 This enables support for the MIPS Technologies SEAD evaluation
228 bool 'MIPS simulator (MIPSsim)'
229 select DMA_NONCOHERENT
230 select SYS_HAS_EARLY_PRINTK
233 select SYS_HAS_CPU_MIPS32_R1
234 select SYS_HAS_CPU_MIPS32_R2
235 select SYS_HAS_EARLY_PRINTK
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_MULTITHREADING
239 select SYS_SUPPORTS_LITTLE_ENDIAN
241 This option enables support for MIPS Technologies MIPSsim software
245 bool "NEC EMMA2RH Mark-eins"
246 select DMA_NONCOHERENT
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_BIG_ENDIAN
252 select SYS_SUPPORTS_LITTLE_ENDIAN
253 select SYS_HAS_CPU_R5000
255 This enables support for the R5432-based NEC Mark-eins
256 boards with R5500 CPU.
259 bool "NEC VR4100 series based machines"
260 select SYS_HAS_CPU_VR41XX
261 select GENERIC_HARDIRQS_NO__DO_IRQ
264 bool "Philips PNX8550 based JBS board"
266 select SYS_SUPPORTS_LITTLE_ENDIAN
268 config PNX8550_STB810
269 bool "Philips PNX8550 based STB810 board"
271 select SYS_SUPPORTS_LITTLE_ENDIAN
274 bool "PMC-Sierra MSP chipsets"
275 depends on EXPERIMENTAL
276 select DMA_NONCOHERENT
278 select NO_EXCEPT_FILL
280 select SYS_HAS_CPU_MIPS32_R1
281 select SYS_HAS_CPU_MIPS32_R2
282 select SYS_SUPPORTS_32BIT_KERNEL
283 select SYS_SUPPORTS_BIG_ENDIAN
284 select SYS_SUPPORTS_KGDB
287 select SERIAL_8250_CONSOLE
289 This adds support for the PMC-Sierra family of Multi-Service
290 Processor System-On-A-Chips. These parts include a number
291 of integrated peripherals, interfaces and DSPs in addition to
292 a variety of MIPS cores.
295 bool "PMC-Sierra Yosemite eval board"
302 select SYS_HAS_CPU_RM9000
303 select SYS_HAS_EARLY_PRINTK
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_64BIT_KERNEL
306 select SYS_SUPPORTS_BIG_ENDIAN
307 select SYS_SUPPORTS_HIGHMEM
308 select SYS_SUPPORTS_KGDB
309 select SYS_SUPPORTS_SMP
311 Yosemite is an evaluation board for the RM9000x2 processor
312 manufactured by PMC-Sierra.
317 select GENERIC_ISA_DMA
318 select HAVE_STD_PC_SERIAL_PORT
323 select SYS_HAS_CPU_MIPS32_R1
324 select SYS_SUPPORTS_32BIT_KERNEL
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_LITTLE_ENDIAN
327 select ARCH_SPARSEMEM_ENABLE
328 select GENERIC_HARDIRQS_NO__DO_IRQ
329 select NR_CPUS_DEFAULT_1
330 select SYS_SUPPORTS_SMP
332 Qemu is a software emulator which among other architectures also
333 can simulate a MIPS32 4Kc system. This patch adds support for the
334 system architecture that currently is being simulated by Qemu. It
335 will eventually be removed again when Qemu has the capability to
336 simulate actual MIPS hardware platforms. More information on Qemu
337 can be found at http://www.linux-mips.org/wiki/Qemu.
340 bool "SGI IP22 (Indy/Indigo2)"
344 select DMA_NONCOHERENT
346 select IP22_CPU_SCACHE
348 select GENERIC_ISA_DMA_SUPPORT_BROKEN
350 select SYS_HAS_CPU_R4X00
351 select SYS_HAS_CPU_R5000
352 select SYS_HAS_EARLY_PRINTK
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL
355 select SYS_SUPPORTS_BIG_ENDIAN
357 This are the SGI Indy, Challenge S and Indigo2, as well as certain
358 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
359 that runs on these, say Y here.
362 bool "SGI IP27 (Origin200/2000)"
367 select SYS_HAS_EARLY_PRINTK
369 select NR_CPUS_DEFAULT_64
371 select SYS_HAS_CPU_R10000
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_BIG_ENDIAN
374 select SYS_SUPPORTS_KGDB
375 select SYS_SUPPORTS_NUMA
376 select SYS_SUPPORTS_SMP
377 select GENERIC_HARDIRQS_NO__DO_IRQ
379 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
380 workstations. To compile a Linux kernel that runs on these, say Y
388 select DMA_NONCOHERENT
390 select R5000_CPU_SCACHE
391 select RM7000_CPU_SCACHE
392 select SYS_HAS_CPU_R5000
393 select SYS_HAS_CPU_R10000 if BROKEN
394 select SYS_HAS_CPU_RM7000
395 select SYS_HAS_CPU_NEVADA
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
399 If you want this kernel to run on SGI O2 workstation, say Y here.
402 bool "Sibyte BCM91120C-CRhine"
403 depends on EXPERIMENTAL
406 select SIBYTE_BCM1120
408 select SYS_HAS_CPU_SB1
409 select SYS_SUPPORTS_BIG_ENDIAN
410 select SYS_SUPPORTS_LITTLE_ENDIAN
413 bool "Sibyte BCM91120x-Carmel"
414 depends on EXPERIMENTAL
417 select SIBYTE_BCM1120
419 select SYS_HAS_CPU_SB1
420 select SYS_SUPPORTS_BIG_ENDIAN
421 select SYS_SUPPORTS_LITTLE_ENDIAN
424 bool "Sibyte BCM91125C-CRhone"
425 depends on EXPERIMENTAL
428 select SIBYTE_BCM1125
430 select SYS_HAS_CPU_SB1
431 select SYS_SUPPORTS_BIG_ENDIAN
432 select SYS_SUPPORTS_HIGHMEM
433 select SYS_SUPPORTS_LITTLE_ENDIAN
436 bool "Sibyte BCM91125E-Rhone"
437 depends on EXPERIMENTAL
440 select SIBYTE_BCM1125H
442 select SYS_HAS_CPU_SB1
443 select SYS_SUPPORTS_BIG_ENDIAN
444 select SYS_SUPPORTS_LITTLE_ENDIAN
447 bool "Sibyte BCM91250A-SWARM"
450 select NR_CPUS_DEFAULT_2
453 select SYS_HAS_CPU_SB1
454 select SYS_SUPPORTS_BIG_ENDIAN
455 select SYS_SUPPORTS_HIGHMEM
456 select SYS_SUPPORTS_KGDB
457 select SYS_SUPPORTS_LITTLE_ENDIAN
459 config SIBYTE_LITTLESUR
460 bool "Sibyte BCM91250C2-LittleSur"
461 depends on EXPERIMENTAL
464 select NR_CPUS_DEFAULT_2
467 select SYS_HAS_CPU_SB1
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_HIGHMEM
470 select SYS_SUPPORTS_LITTLE_ENDIAN
472 config SIBYTE_SENTOSA
473 bool "Sibyte BCM91250E-Sentosa"
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_LITTLE_ENDIAN
484 config SIBYTE_PTSWARM
485 bool "Sibyte BCM91250PT-PTSWARM"
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
498 bool "Sibyte BCM91480B-BigSur"
501 select NR_CPUS_DEFAULT_4
503 select SIBYTE_BCM1x80
505 select SYS_HAS_CPU_SB1
506 select SYS_SUPPORTS_BIG_ENDIAN
507 select SYS_SUPPORTS_LITTLE_ENDIAN
510 bool "SNI RM200/300/400"
511 select ARC if CPU_LITTLE_ENDIAN
512 select ARC32 if CPU_LITTLE_ENDIAN
513 select ARCH_MAY_HAVE_PC_FDC
515 select DMA_NONCOHERENT
516 select GENERIC_ISA_DMA
523 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
524 select SYS_HAS_CPU_R4X00
525 select SYS_HAS_CPU_R5000
526 select SYS_HAS_CPU_R10000
527 select R5000_CPU_SCACHE
528 select SYS_HAS_EARLY_PRINTK
529 select SYS_SUPPORTS_32BIT_KERNEL
530 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
531 select SYS_SUPPORTS_BIG_ENDIAN
532 select SYS_SUPPORTS_HIGHMEM
533 select SYS_SUPPORTS_LITTLE_ENDIAN
535 The SNI RM200/300/400 are MIPS-based machines manufactured by
536 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
537 Technology and now in turn merged with Fujitsu. Say Y here to
538 support this machine type.
540 config TOSHIBA_JMR3927
541 bool "Toshiba JMR-TX3927 board"
542 select DMA_NONCOHERENT
547 select SYS_HAS_CPU_TX39XX
548 select SYS_SUPPORTS_32BIT_KERNEL
549 select SYS_SUPPORTS_LITTLE_ENDIAN
550 select SYS_SUPPORTS_BIG_ENDIAN
551 select GENERIC_HARDIRQS_NO__DO_IRQ
553 config TOSHIBA_RBTX4927
554 bool "Toshiba RBTX49[23]7 board"
555 select DMA_NONCOHERENT
556 select HAS_TXX9_SERIAL
560 select I8259 if TOSHIBA_FPCIB0
562 select SYS_HAS_CPU_TX49XX
563 select SYS_SUPPORTS_32BIT_KERNEL
564 select SYS_SUPPORTS_64BIT_KERNEL
565 select SYS_SUPPORTS_LITTLE_ENDIAN
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select SYS_SUPPORTS_KGDB
568 select GENERIC_HARDIRQS_NO__DO_IRQ
570 This Toshiba board is based on the TX4927 processor. Say Y here to
571 support this machine type
573 config TOSHIBA_RBTX4938
574 bool "Toshiba RBTX4938 board"
575 select DMA_NONCOHERENT
576 select HAS_TXX9_SERIAL
581 select SYS_HAS_CPU_TX49XX
582 select SYS_SUPPORTS_32BIT_KERNEL
583 select SYS_SUPPORTS_LITTLE_ENDIAN
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_KGDB
586 select GENERIC_HARDIRQS_NO__DO_IRQ
589 This Toshiba board is based on the TX4938 processor. Say Y here to
590 support this machine type
593 bool "Wind River PPMC board"
596 select DMA_NONCOHERENT
598 select PCI_GT64XXX_PCI0
600 select SYS_HAS_CPU_MIPS32_R1
601 select SYS_HAS_CPU_MIPS32_R2
602 select SYS_HAS_CPU_MIPS64_R1
603 select SYS_HAS_CPU_NEVADA
604 select SYS_HAS_CPU_RM7000
605 select SYS_SUPPORTS_32BIT_KERNEL
606 select SYS_SUPPORTS_64BIT_KERNEL
607 select SYS_SUPPORTS_BIG_ENDIAN
608 select SYS_SUPPORTS_LITTLE_ENDIAN
610 This enables support for the Wind River MIPS32 4KC PPMC evaluation
611 board, which is based on GT64120 bridge chip.
615 source "arch/mips/au1000/Kconfig"
616 source "arch/mips/jazz/Kconfig"
617 source "arch/mips/lasat/Kconfig"
618 source "arch/mips/pmc-sierra/Kconfig"
619 source "arch/mips/sgi-ip27/Kconfig"
620 source "arch/mips/sibyte/Kconfig"
621 source "arch/mips/tx4927/Kconfig"
622 source "arch/mips/tx4938/Kconfig"
623 source "arch/mips/vr41xx/Kconfig"
627 config RWSEM_GENERIC_SPINLOCK
631 config RWSEM_XCHGADD_ALGORITHM
634 config ARCH_HAS_ILOG2_U32
638 config ARCH_HAS_ILOG2_U64
642 config GENERIC_FIND_NEXT_BIT
646 config GENERIC_HWEIGHT
650 config GENERIC_CALIBRATE_DELAY
658 config SCHED_NO_NO_OMIT_FRAME_POINTER
662 config GENERIC_HARDIRQS_NO__DO_IRQ
667 # Select some configuration options automatically based on user selections.
672 config ARCH_MAY_HAVE_PC_FDC
686 select DMA_NEED_PCI_MAP_STATE
688 config DMA_NONCOHERENT
690 select DMA_NEED_PCI_MAP_STATE
692 config DMA_NEED_PCI_MAP_STATE
696 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
697 depends on SYS_HAS_EARLY_PRINTK
700 This option enables special console drivers which allow the kernel
701 to print messages very early in the bootup process.
703 This is useful for kernel debugging when your machine crashes very
704 early before the console code is initialized. For normal operation,
705 it is not recommended because it looks ugly on some machines and
706 doesn't cooperate with an X server. You should normally say N here,
707 unless you want to debug such a crash.
709 config SYS_HAS_EARLY_PRINTK
728 config MIPS_DISABLE_OBSOLETE_IDE
734 config GENERIC_ISA_DMA
736 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
738 config GENERIC_ISA_DMA_SUPPORT_BROKEN
740 select GENERIC_ISA_DMA
746 # Endianess selection. Sufficiently obscure so many users don't know what to
747 # answer,so we try hard to limit the available choices. Also the use of a
748 # choice statement should be more obvious to the user.
751 prompt "Endianess selection"
753 Some MIPS machines can be configured for either little or big endian
754 byte order. These modes require different kernels and a different
755 Linux distribution. In general there is one preferred byteorder for a
756 particular system but some systems are just as commonly used in the
757 one or the other endianness.
759 config CPU_BIG_ENDIAN
761 depends on SYS_SUPPORTS_BIG_ENDIAN
763 config CPU_LITTLE_ENDIAN
765 depends on SYS_SUPPORTS_LITTLE_ENDIAN
770 config SYS_SUPPORTS_APM_EMULATION
773 config SYS_SUPPORTS_BIG_ENDIAN
776 config SYS_SUPPORTS_LITTLE_ENDIAN
797 config MIPS_BOARDS_GEN
800 config PCI_GT64XXX_PCI0
803 config NO_EXCEPT_FILL
808 select HAS_TXX9_SERIAL
820 select DMA_NONCOHERENT
822 select SYS_HAS_CPU_MIPS32_R1
823 select SYS_HAS_EARLY_PRINTK
824 select SYS_SUPPORTS_32BIT_KERNEL
825 select GENERIC_HARDIRQS_NO__DO_IRQ
826 select SYS_SUPPORTS_KGDB
846 config MIPS_L1_CACHE_SHIFT
848 default "4" if MACH_DECSTATION
849 default "7" if SGI_IP27 || SNI_RM
850 default "4" if PMC_MSP4200_EVAL
853 config HAVE_STD_PC_SERIAL_PORT
857 bool "ARC console support"
858 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
862 depends on MACH_JAZZ || SNI_RM || SGI_IP32
867 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
884 depends on SYS_HAS_CPU_LOONGSON2
885 select CPU_SUPPORTS_32BIT_KERNEL
886 select CPU_SUPPORTS_64BIT_KERNEL
887 select CPU_SUPPORTS_HIGHMEM
889 The Loongson 2E processor implements the MIPS III instruction set
890 with many extensions.
893 bool "MIPS32 Release 1"
894 depends on SYS_HAS_CPU_MIPS32_R1
896 select CPU_HAS_PREFETCH
897 select CPU_SUPPORTS_32BIT_KERNEL
898 select CPU_SUPPORTS_HIGHMEM
900 Choose this option to build a kernel for release 1 or later of the
901 MIPS32 architecture. Most modern embedded systems with a 32-bit
902 MIPS processor are based on a MIPS32 processor. If you know the
903 specific type of processor in your system, choose those that one
904 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
905 Release 2 of the MIPS32 architecture is available since several
906 years so chances are you even have a MIPS32 Release 2 processor
907 in which case you should choose CPU_MIPS32_R2 instead for better
911 bool "MIPS32 Release 2"
912 depends on SYS_HAS_CPU_MIPS32_R2
914 select CPU_HAS_PREFETCH
915 select CPU_SUPPORTS_32BIT_KERNEL
916 select CPU_SUPPORTS_HIGHMEM
918 Choose this option to build a kernel for release 2 or later of the
919 MIPS32 architecture. Most modern embedded systems with a 32-bit
920 MIPS processor are based on a MIPS32 processor. If you know the
921 specific type of processor in your system, choose those that one
922 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
925 bool "MIPS64 Release 1"
926 depends on SYS_HAS_CPU_MIPS64_R1
928 select CPU_HAS_PREFETCH
929 select CPU_SUPPORTS_32BIT_KERNEL
930 select CPU_SUPPORTS_64BIT_KERNEL
931 select CPU_SUPPORTS_HIGHMEM
933 Choose this option to build a kernel for release 1 or later of the
934 MIPS64 architecture. Many modern embedded systems with a 64-bit
935 MIPS processor are based on a MIPS64 processor. If you know the
936 specific type of processor in your system, choose those that one
937 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
938 Release 2 of the MIPS64 architecture is available since several
939 years so chances are you even have a MIPS64 Release 2 processor
940 in which case you should choose CPU_MIPS64_R2 instead for better
944 bool "MIPS64 Release 2"
945 depends on SYS_HAS_CPU_MIPS64_R2
947 select CPU_HAS_PREFETCH
948 select CPU_SUPPORTS_32BIT_KERNEL
949 select CPU_SUPPORTS_64BIT_KERNEL
950 select CPU_SUPPORTS_HIGHMEM
952 Choose this option to build a kernel for release 2 or later of the
953 MIPS64 architecture. Many modern embedded systems with a 64-bit
954 MIPS processor are based on a MIPS64 processor. If you know the
955 specific type of processor in your system, choose those that one
956 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
960 depends on SYS_HAS_CPU_R3000
962 select CPU_SUPPORTS_32BIT_KERNEL
963 select CPU_SUPPORTS_HIGHMEM
965 Please make sure to pick the right CPU type. Linux/MIPS is not
966 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
967 *not* work on R4000 machines and vice versa. However, since most
968 of the supported machines have an R4000 (or similar) CPU, R4x00
969 might be a safe bet. If the resulting kernel does not work,
970 try to recompile with R3000.
974 depends on SYS_HAS_CPU_TX39XX
975 select CPU_SUPPORTS_32BIT_KERNEL
979 depends on SYS_HAS_CPU_VR41XX
980 select CPU_SUPPORTS_32BIT_KERNEL
981 select CPU_SUPPORTS_64BIT_KERNEL
983 The options selects support for the NEC VR4100 series of processors.
984 Only choose this option if you have one of these processors as a
985 kernel built with this option will not run on any other type of
986 processor or vice versa.
990 depends on SYS_HAS_CPU_R4300
992 select CPU_SUPPORTS_32BIT_KERNEL
993 select CPU_SUPPORTS_64BIT_KERNEL
995 MIPS Technologies R4300-series processors.
999 depends on SYS_HAS_CPU_R4X00
1001 select CPU_SUPPORTS_32BIT_KERNEL
1002 select CPU_SUPPORTS_64BIT_KERNEL
1004 MIPS Technologies R4000-series processors other than 4300, including
1005 the R4000, R4400, R4600, and 4700.
1009 depends on SYS_HAS_CPU_TX49XX
1011 select CPU_HAS_PREFETCH
1012 select CPU_SUPPORTS_32BIT_KERNEL
1013 select CPU_SUPPORTS_64BIT_KERNEL
1017 depends on SYS_HAS_CPU_R5000
1019 select CPU_SUPPORTS_32BIT_KERNEL
1020 select CPU_SUPPORTS_64BIT_KERNEL
1022 MIPS Technologies R5000-series processors other than the Nevada.
1026 depends on SYS_HAS_CPU_R5432
1028 select CPU_SUPPORTS_32BIT_KERNEL
1029 select CPU_SUPPORTS_64BIT_KERNEL
1033 depends on EXPERIMENTAL
1035 depends on SYS_HAS_CPU_R6000
1036 select CPU_SUPPORTS_32BIT_KERNEL
1038 MIPS Technologies R6000 and R6000A series processors. Note these
1039 processors are extremely rare and the support for them is incomplete.
1043 depends on SYS_HAS_CPU_NEVADA
1045 select CPU_SUPPORTS_32BIT_KERNEL
1046 select CPU_SUPPORTS_64BIT_KERNEL
1048 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1052 depends on EXPERIMENTAL
1053 depends on SYS_HAS_CPU_R8000
1055 select CPU_HAS_PREFETCH
1056 select CPU_SUPPORTS_64BIT_KERNEL
1058 MIPS Technologies R8000 processors. Note these processors are
1059 uncommon and the support for them is incomplete.
1063 depends on SYS_HAS_CPU_R10000
1065 select CPU_HAS_PREFETCH
1066 select CPU_SUPPORTS_32BIT_KERNEL
1067 select CPU_SUPPORTS_64BIT_KERNEL
1068 select CPU_SUPPORTS_HIGHMEM
1070 MIPS Technologies R10000-series processors.
1074 depends on SYS_HAS_CPU_RM7000
1076 select CPU_HAS_PREFETCH
1077 select CPU_SUPPORTS_32BIT_KERNEL
1078 select CPU_SUPPORTS_64BIT_KERNEL
1079 select CPU_SUPPORTS_HIGHMEM
1083 depends on SYS_HAS_CPU_RM9000
1085 select CPU_HAS_PREFETCH
1086 select CPU_SUPPORTS_32BIT_KERNEL
1087 select CPU_SUPPORTS_64BIT_KERNEL
1088 select CPU_SUPPORTS_HIGHMEM
1089 select WEAK_ORDERING
1093 depends on SYS_HAS_CPU_SB1
1095 select CPU_SUPPORTS_32BIT_KERNEL
1096 select CPU_SUPPORTS_64BIT_KERNEL
1097 select CPU_SUPPORTS_HIGHMEM
1098 select WEAK_ORDERING
1102 config SYS_HAS_CPU_LOONGSON2
1105 config SYS_HAS_CPU_MIPS32_R1
1108 config SYS_HAS_CPU_MIPS32_R2
1111 config SYS_HAS_CPU_MIPS64_R1
1114 config SYS_HAS_CPU_MIPS64_R2
1117 config SYS_HAS_CPU_R3000
1120 config SYS_HAS_CPU_TX39XX
1123 config SYS_HAS_CPU_VR41XX
1126 config SYS_HAS_CPU_R4300
1129 config SYS_HAS_CPU_R4X00
1132 config SYS_HAS_CPU_TX49XX
1135 config SYS_HAS_CPU_R5000
1138 config SYS_HAS_CPU_R5432
1141 config SYS_HAS_CPU_R6000
1144 config SYS_HAS_CPU_NEVADA
1147 config SYS_HAS_CPU_R8000
1150 config SYS_HAS_CPU_R10000
1153 config SYS_HAS_CPU_RM7000
1156 config SYS_HAS_CPU_RM9000
1159 config SYS_HAS_CPU_SB1
1163 # CPU may reorder R->R, R->W, W->R, W->W
1164 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1166 config WEAK_ORDERING
1170 # CPU may reorder reads and writes beyond LL/SC
1171 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1173 config WEAK_REORDERING_BEYOND_LLSC
1178 # These two indicate any level of the MIPS32 and MIPS64 architecture
1182 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1186 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1189 # These two indicate the revision of the architecture, either Release 1 or Release 2
1193 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1197 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1199 config SYS_SUPPORTS_32BIT_KERNEL
1201 config SYS_SUPPORTS_64BIT_KERNEL
1203 config CPU_SUPPORTS_32BIT_KERNEL
1205 config CPU_SUPPORTS_64BIT_KERNEL
1212 prompt "Kernel code model"
1214 You should only select this option if you have a workload that
1215 actually benefits from 64-bit processing or if your machine has
1216 large memory. You will only be presented a single option in this
1217 menu if your system does not support both 32-bit and 64-bit kernels.
1220 bool "32-bit kernel"
1221 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1224 Select this option if you want to build a 32-bit kernel.
1226 bool "64-bit kernel"
1227 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1229 Select this option if you want to build a 64-bit kernel.
1234 prompt "Kernel page size"
1235 default PAGE_SIZE_4KB
1237 config PAGE_SIZE_4KB
1240 This option select the standard 4kB Linux page size. On some
1241 R3000-family processors this is the only available page size. Using
1242 4kB page size will minimize memory consumption and is therefore
1243 recommended for low memory systems.
1245 config PAGE_SIZE_8KB
1247 depends on EXPERIMENTAL && CPU_R8000
1249 Using 8kB page size will result in higher performance kernel at
1250 the price of higher memory consumption. This option is available
1251 only on the R8000 processor. Not that at the time of this writing
1252 this option is still high experimental; there are also issues with
1253 compatibility of user applications.
1255 config PAGE_SIZE_16KB
1257 depends on !CPU_R3000 && !CPU_TX39XX
1259 Using 16kB page size will result in higher performance kernel at
1260 the price of higher memory consumption. This option is available on
1261 all non-R3000 family processors. Note that you will need a suitable
1262 Linux distribution to support this.
1264 config PAGE_SIZE_64KB
1266 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1268 Using 64kB page size will result in higher performance kernel at
1269 the price of higher memory consumption. This option is available on
1270 all non-R3000 family processor. Not that at the time of this
1271 writing this option is still high experimental.
1278 config IP22_CPU_SCACHE
1283 # Support for a MIPS32 / MIPS64 style S-caches
1285 config MIPS_CPU_SCACHE
1289 config R5000_CPU_SCACHE
1293 config RM7000_CPU_SCACHE
1297 config SIBYTE_DMA_PAGEOPS
1298 bool "Use DMA to clear/copy pages"
1301 Instead of using the CPU to zero and copy pages, use a Data Mover
1302 channel. These DMA channels are otherwise unused by the standard
1303 SiByte Linux port. Seems to give a small performance benefit.
1305 config CPU_HAS_PREFETCH
1309 prompt "MIPS MT options"
1311 config MIPS_MT_DISABLED
1312 bool "Disable multithreading support."
1314 Use this option if your workload can't take advantage of
1315 MIPS hardware multithreading support. On systems that don't have
1316 the option of an MT-enabled processor this option will be the only
1317 option in this menu.
1320 bool "Use 1 TC on each available VPE for SMP"
1321 depends on SYS_SUPPORTS_MULTITHREADING
1322 select CPU_MIPSR2_IRQ_VI
1323 select CPU_MIPSR2_IRQ_EI
1324 select CPU_MIPSR2_SRS
1326 select NR_CPUS_DEFAULT_2
1328 select SYS_SUPPORTS_SMP
1330 This is a kernel model which is also known a VSMP or lately
1331 has been marketesed into SMVP.
1334 bool "SMTC: Use all TCs on all VPEs for SMP"
1335 depends on CPU_MIPS32_R2
1336 #depends on CPU_MIPS64_R2 # once there is hardware ...
1337 depends on SYS_SUPPORTS_MULTITHREADING
1338 select CPU_MIPSR2_IRQ_VI
1339 select CPU_MIPSR2_IRQ_EI
1340 select CPU_MIPSR2_SRS
1342 select NR_CPUS_DEFAULT_8
1344 select SYS_SUPPORTS_SMP
1346 This is a kernel model which is known a SMTC or lately has been
1347 marketesed into SMVP.
1354 config SYS_SUPPORTS_MULTITHREADING
1357 config MIPS_MT_FPAFF
1358 bool "Dynamic FPU affinity for FP-intensive threads"
1360 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1362 config MIPS_VPE_LOADER
1363 bool "VPE loader support."
1364 depends on SYS_SUPPORTS_MULTITHREADING
1365 select CPU_MIPSR2_IRQ_VI
1366 select CPU_MIPSR2_IRQ_EI
1367 select CPU_MIPSR2_SRS
1370 Includes a loader for loading an elf relocatable object
1371 onto another VPE and running it.
1373 config MIPS_MT_SMTC_INSTANT_REPLAY
1374 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1375 depends on MIPS_MT_SMTC && !PREEMPT
1378 SMTC pseudo-interrupts between TCs are deferred and queued
1379 if the target TC is interrupt-inhibited (IXMT). In the first
1380 SMTC prototypes, these queued IPIs were serviced on return
1381 to user mode, or on entry into the kernel idle loop. The
1382 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1383 processing, which adds runtime overhead (hence the option to turn
1384 it off), but ensures that IPIs are handled promptly even under
1385 heavy I/O interrupt load.
1387 config MIPS_MT_SMTC_IM_BACKSTOP
1388 bool "Use per-TC register bits as backstop for inhibited IM bits"
1389 depends on MIPS_MT_SMTC
1392 To support multiple TC microthreads acting as "CPUs" within
1393 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1394 during interrupt handling. To support legacy drivers and interrupt
1395 controller management code, SMTC has a "backstop" to track and
1396 if necessary restore the interrupt mask. This has some performance
1397 impact on interrupt service overhead. Disable it only if you know
1400 config MIPS_MT_SMTC_IRQAFF
1401 bool "Support IRQ affinity API"
1402 depends on MIPS_MT_SMTC
1405 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1406 for SMTC Linux kernel. Requires platform support, of which
1407 an example can be found in the MIPS kernel i8259 and Malta
1408 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1409 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1410 interrupt dispatch, and should be used only if you know what
1413 config MIPS_VPE_LOADER_TOM
1414 bool "Load VPE program into memory hidden from linux"
1415 depends on MIPS_VPE_LOADER
1418 The loader can use memory that is present but has been hidden from
1419 Linux using the kernel command line option "mem=xxMB". It's up to
1420 you to ensure the amount you put in the option and the space your
1421 program requires is less or equal to the amount physically present.
1423 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1424 config MIPS_VPE_APSP_API
1425 bool "Enable support for AP/SP API (RTLX)"
1426 depends on MIPS_VPE_LOADER
1429 config MIPS_APSP_KSPD
1431 depends on MIPS_VPE_APSP_API
1434 KSPD is a kernel daemon that accepts syscall requests from the SP
1435 side, actions them and returns the results. It also handles the
1436 "exit" syscall notifying other kernel modules the SP program is
1437 exiting. You probably want to say yes here.
1439 config SB1_PASS_1_WORKAROUNDS
1441 depends on CPU_SB1_PASS_1
1444 config SB1_PASS_2_WORKAROUNDS
1446 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1449 config SB1_PASS_2_1_WORKAROUNDS
1451 depends on CPU_SB1 && CPU_SB1_PASS_2
1454 config 64BIT_PHYS_ADDR
1460 config CPU_HAS_SMARTMIPS
1461 depends on SYS_SUPPORTS_SMARTMIPS
1462 bool "Support for the SmartMIPS ASE"
1464 SmartMIPS is a extension of the MIPS32 architecture aimed at
1465 increased security at both hardware and software level for
1466 smartcards. Enabling this option will allow proper use of the
1467 SmartMIPS instructions by Linux applications. However a kernel with
1468 this option will not work on a MIPS core without SmartMIPS core. If
1469 you don't know you probably don't have SmartMIPS and should say N
1475 config 64BIT_CONTEXT
1476 bool "Save 64bit integer registers"
1477 depends on 32BIT && CPU_LOONGSON2
1479 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1480 registers can still be accessed as 64bit, mainly for multimedia
1481 instructions. We must have all 64bit save/restored to make sure
1482 those instructions to get correct result.
1485 # Vectored interrupt mode is an R2 feature
1487 config CPU_MIPSR2_IRQ_VI
1491 # Extended interrupt mode is an R2 feature
1493 config CPU_MIPSR2_IRQ_EI
1497 # Shadow registers are an R2 feature
1499 config CPU_MIPSR2_SRS
1504 depends on !CPU_R3000
1508 # Use the generic interrupt handling code in kernel/irq/:
1510 config GENERIC_HARDIRQS
1514 config GENERIC_IRQ_PROBE
1522 # - Highmem only makes sense for the 32-bit kernel.
1523 # - The current highmem code will only work properly on physically indexed
1524 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1525 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1526 # moment we protect the user and offer the highmem option only on machines
1527 # where it's known to be safe. This will not offer highmem on a few systems
1528 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1529 # indexed CPUs but we're playing safe.
1530 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1531 # know they might have memory configurations that could make use of highmem
1535 bool "High Memory Support"
1536 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1538 config CPU_SUPPORTS_HIGHMEM
1541 config SYS_SUPPORTS_HIGHMEM
1544 config SYS_SUPPORTS_SMARTMIPS
1547 config ARCH_FLATMEM_ENABLE
1551 config ARCH_DISCONTIGMEM_ENABLE
1553 default y if SGI_IP27
1555 Say Y to support efficient handling of discontiguous physical memory,
1556 for architectures which are either NUMA (Non-Uniform Memory Access)
1557 or have huge holes in the physical address space for other reasons.
1558 See <file:Documentation/vm/numa> for more.
1560 config ARCH_SPARSEMEM_ENABLE
1562 select SPARSEMEM_STATIC
1566 depends on SYS_SUPPORTS_NUMA
1568 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1569 Access). This option improves performance on systems with more
1570 than two nodes; on two node systems it is generally better to
1571 leave it disabled; on single node systems disable this option
1574 config SYS_SUPPORTS_NUMA
1580 depends on NEED_MULTIPLE_NODES
1585 bool "Multi-Processing support"
1586 depends on SYS_SUPPORTS_SMP
1589 This enables support for systems with more than one CPU. If you have
1590 a system with only one CPU, like most personal computers, say N. If
1591 you have a system with more than one CPU, say Y.
1593 If you say N here, the kernel will run on single and multiprocessor
1594 machines, but will use only one CPU of a multiprocessor machine. If
1595 you say Y here, the kernel will run on many, but not all,
1596 singleprocessor machines. On a singleprocessor machine, the kernel
1597 will run faster if you say N here.
1599 People using multiprocessor machines who say Y here should also say
1600 Y to "Enhanced Real Time Clock Support", below.
1602 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1603 available at <http://www.tldp.org/docs.html#howto>.
1605 If you don't know what to do here, say N.
1607 config SYS_SUPPORTS_SMP
1610 config NR_CPUS_DEFAULT_1
1613 config NR_CPUS_DEFAULT_2
1616 config NR_CPUS_DEFAULT_4
1619 config NR_CPUS_DEFAULT_8
1622 config NR_CPUS_DEFAULT_16
1625 config NR_CPUS_DEFAULT_32
1628 config NR_CPUS_DEFAULT_64
1632 int "Maximum number of CPUs (2-64)"
1633 range 1 64 if NR_CPUS_DEFAULT_1
1635 default "1" if NR_CPUS_DEFAULT_1
1636 default "2" if NR_CPUS_DEFAULT_2
1637 default "4" if NR_CPUS_DEFAULT_4
1638 default "8" if NR_CPUS_DEFAULT_8
1639 default "16" if NR_CPUS_DEFAULT_16
1640 default "32" if NR_CPUS_DEFAULT_32
1641 default "64" if NR_CPUS_DEFAULT_64
1643 This allows you to specify the maximum number of CPUs which this
1644 kernel will support. The maximum supported value is 32 for 32-bit
1645 kernel and 64 for 64-bit kernels; the minimum value which makes
1646 sense is 1 for Qemu (useful only for kernel debugging purposes)
1647 and 2 for all others.
1649 This is purely to save memory - each supported CPU adds
1650 approximately eight kilobytes to the kernel image. For best
1651 performance should round up your number of processors to the next
1655 # Timer Interrupt Frequency Configuration
1659 prompt "Timer frequency"
1662 Allows the configuration of the timer frequency.
1665 bool "48 HZ" if SYS_SUPPORTS_48HZ
1668 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1671 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1674 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1677 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1680 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1683 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1687 config SYS_SUPPORTS_48HZ
1690 config SYS_SUPPORTS_100HZ
1693 config SYS_SUPPORTS_128HZ
1696 config SYS_SUPPORTS_250HZ
1699 config SYS_SUPPORTS_256HZ
1702 config SYS_SUPPORTS_1000HZ
1705 config SYS_SUPPORTS_1024HZ
1708 config SYS_SUPPORTS_ARBIT_HZ
1710 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1711 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1712 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1713 !SYS_SUPPORTS_1024HZ
1718 default 100 if HZ_100
1719 default 128 if HZ_128
1720 default 250 if HZ_250
1721 default 256 if HZ_256
1722 default 1000 if HZ_1000
1723 default 1024 if HZ_1024
1725 source "kernel/Kconfig.preempt"
1727 config MIPS_INSANE_LARGE
1728 bool "Support for large 64-bit configurations"
1729 depends on CPU_R10000 && 64BIT
1731 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1732 previous 64-bit processors which only supported 40 bit / 1TB. If you
1733 need processes of more than 1TB virtual address space, say Y here.
1734 This will result in additional memory usage, so it is not
1735 recommended for normal users.
1738 bool "Kexec system call (EXPERIMENTAL)"
1739 depends on EXPERIMENTAL
1741 kexec is a system call that implements the ability to shutdown your
1742 current kernel, and to start another kernel. It is like a reboot
1743 but it is independent of the system firmware. And like a reboot
1744 you can start any kernel with it, not just Linux.
1746 The name comes from the similiarity to the exec system call.
1748 It is an ongoing process to be certain the hardware in a machine
1749 is properly shutdown, so do not be surprised if this code does not
1750 initially work for you. It may help to enable device hotplugging
1751 support. As of this writing the exact hardware interface is
1752 strongly in flux, so no good recommendation can be made.
1755 bool "Enable seccomp to safely compute untrusted bytecode"
1759 This kernel feature is useful for number crunching applications
1760 that may need to compute untrusted bytecode during their
1761 execution. By using pipes or other transports made available to
1762 the process as file descriptors supporting the read/write
1763 syscalls, it's possible to isolate those applications in
1764 their own address space using seccomp. Once seccomp is
1765 enabled via /proc/<pid>/seccomp, it cannot be disabled
1766 and the task is only allowed to execute a few safe syscalls
1767 defined by each seccomp mode.
1769 If unsure, say Y. Only embedded should say N here.
1773 config RWSEM_GENERIC_SPINLOCK
1777 config LOCKDEP_SUPPORT
1781 config STACKTRACE_SUPPORT
1785 source "init/Kconfig"
1787 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1795 bool "Support for PCI controller"
1796 depends on HW_HAS_PCI
1798 Find out whether you have a PCI motherboard. PCI is the name of a
1799 bus system, i.e. the way the CPU talks to the other stuff inside
1800 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1803 The PCI-HOWTO, available from
1804 <http://www.tldp.org/docs.html#howto>, contains valuable
1805 information about which PCI hardware does work under Linux and which
1812 source "drivers/pci/Kconfig"
1815 # ISA support is now enabled via select. Too many systems still have the one
1816 # or other ISA chip on the board that users don't know about so don't expect
1817 # users to choose the right thing ...
1824 depends on HW_HAS_EISA
1826 select GENERIC_ISA_DMA
1828 The Extended Industry Standard Architecture (EISA) bus was
1829 developed as an open alternative to the IBM MicroChannel bus.
1831 The EISA bus provided some of the features of the IBM MicroChannel
1832 bus while maintaining backward compatibility with cards made for
1833 the older ISA bus. The EISA bus saw limited use between 1988 and
1834 1995 when it was made obsolete by the PCI bus.
1836 Say Y here if you are building a kernel for an EISA-based machine.
1840 source "drivers/eisa/Kconfig"
1843 bool "TURBOchannel support"
1844 depends on MACH_DECSTATION
1846 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1847 processors. Documentation on writing device drivers for TurboChannel
1849 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1852 # bool "Access.Bus support"
1862 source "drivers/pcmcia/Kconfig"
1864 source "drivers/pci/hotplug/Kconfig"
1868 menu "Executable file formats"
1870 source "fs/Kconfig.binfmt"
1876 bool "Include IRIX binary compatibility"
1877 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1879 config MIPS32_COMPAT
1880 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1883 Select this option if you want Linux/MIPS 32-bit binary
1884 compatibility. Since all software available for Linux/MIPS is
1885 currently 32-bit you should say Y here.
1889 depends on MIPS32_COMPAT
1892 config SYSVIPC_COMPAT
1894 depends on COMPAT && SYSVIPC
1898 bool "Kernel support for o32 binaries"
1899 depends on MIPS32_COMPAT
1901 Select this option if you want to run o32 binaries. These are pure
1902 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1903 existing binaries are in this format.
1908 bool "Kernel support for n32 binaries"
1909 depends on MIPS32_COMPAT
1911 Select this option if you want to run n32 binaries. These are
1912 64-bit binaries using 32-bit quantities for addressing and certain
1913 data that would normally be 64-bit. They are used in special
1920 default y if MIPS32_O32 || MIPS32_N32
1924 menu "Power management options"
1926 source "kernel/power/Kconfig"
1930 source "net/Kconfig"
1932 source "drivers/Kconfig"
1936 source "arch/mips/oprofile/Kconfig"
1938 source "arch/mips/Kconfig.debug"
1940 source "security/Kconfig"
1942 source "crypto/Kconfig"
1944 source "lib/Kconfig"