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_64BIT_KERNEL
32 select SYS_SUPPORTS_BIG_ENDIAN
33 select SYS_SUPPORTS_KGDB
35 The eXcite is a smart camera platform manufactured by
36 Basler Vision Technologies AG.
38 config BASLER_EXCITE_PROTOTYPE
39 bool "Support for pre-release units"
40 depends on BASLER_EXCITE
43 Pre-series (prototype) units are different from later ones in
44 some ways. Select this option if you have one of these. Please
45 note that a kernel built with this option selected will not be
46 able to run on normal units.
50 select DMA_NONCOHERENT
54 select PCI_GT64XXX_PCI0
55 select SYS_HAS_CPU_NEVADA
56 select SYS_HAS_EARLY_PRINTK
57 select SYS_SUPPORTS_32BIT_KERNEL
58 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
59 select SYS_SUPPORTS_LITTLE_ENDIAN
60 select GENERIC_HARDIRQS_NO__DO_IRQ
62 config MACH_DECSTATION
65 select DMA_NONCOHERENT
68 select SYS_HAS_CPU_R3000
69 select SYS_HAS_CPU_R4X00
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
73 select SYS_SUPPORTS_128HZ
74 select SYS_SUPPORTS_256HZ
75 select SYS_SUPPORTS_1024HZ
77 This enables support for DEC's MIPS based workstations. For details
78 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
79 DECstation porting pages on <http://decstation.unix-ag.org/>.
81 If you have one of the following DECstation Models you definitely
82 want to choose R4xx0 for the CPU Type:
89 otherwise choose R3000.
92 bool "Jazz family of machines"
95 select ARCH_MAY_HAVE_PC_FDC
96 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 "MIPS Atlas board"
128 select DMA_NONCOHERENT
129 select SYS_HAS_EARLY_PRINTK
132 select MIPS_BOARDS_GEN
134 select PCI_GT64XXX_PCI0
136 select RM7000_CPU_SCACHE
138 select SYS_HAS_CPU_MIPS32_R1
139 select SYS_HAS_CPU_MIPS32_R2
140 select SYS_HAS_CPU_MIPS64_R1
141 select SYS_HAS_CPU_NEVADA
142 select SYS_HAS_CPU_RM7000
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_64BIT_KERNEL
145 select SYS_SUPPORTS_BIG_ENDIAN
146 select SYS_SUPPORTS_LITTLE_ENDIAN
147 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
148 select SYS_SUPPORTS_SMARTMIPS
149 select GENERIC_HARDIRQS_NO__DO_IRQ
151 This enables support for the MIPS Technologies Atlas evaluation
155 bool "MIPS Malta board"
156 select ARCH_MAY_HAVE_PC_FDC
158 select HAVE_STD_PC_SERIAL_PORT
159 select DMA_NONCOHERENT
160 select GENERIC_ISA_DMA
164 select MIPS_BOARDS_GEN
166 select MIPS_CPU_SCACHE
167 select PCI_GT64XXX_PCI0
170 select SYS_HAS_CPU_MIPS32_R1
171 select SYS_HAS_CPU_MIPS32_R2
172 select SYS_HAS_CPU_MIPS64_R1
173 select SYS_HAS_CPU_NEVADA
174 select SYS_HAS_CPU_RM7000
175 select SYS_HAS_EARLY_PRINTK
176 select SYS_SUPPORTS_32BIT_KERNEL
177 select SYS_SUPPORTS_64BIT_KERNEL
178 select SYS_SUPPORTS_BIG_ENDIAN
179 select SYS_SUPPORTS_LITTLE_ENDIAN
180 select SYS_SUPPORTS_MULTITHREADING
181 select SYS_SUPPORTS_SMARTMIPS
183 This enables support for the MIPS Technologies Malta evaluation
187 bool "MIPS SEAD board (EXPERIMENTAL)"
188 depends on EXPERIMENTAL
190 select DMA_NONCOHERENT
191 select SYS_HAS_EARLY_PRINTK
192 select MIPS_BOARDS_GEN
193 select SYS_HAS_CPU_MIPS32_R1
194 select SYS_HAS_CPU_MIPS32_R2
195 select SYS_HAS_CPU_MIPS64_R1
196 select SYS_SUPPORTS_32BIT_KERNEL
197 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
198 select SYS_SUPPORTS_BIG_ENDIAN
199 select SYS_SUPPORTS_LITTLE_ENDIAN
200 select SYS_SUPPORTS_SMARTMIPS
202 This enables support for the MIPS Technologies SEAD evaluation
206 bool "Wind River PPMC board"
209 select DMA_NONCOHERENT
211 select PCI_GT64XXX_PCI0
213 select SYS_HAS_CPU_MIPS32_R1
214 select SYS_HAS_CPU_MIPS32_R2
215 select SYS_HAS_CPU_MIPS64_R1
216 select SYS_HAS_CPU_NEVADA
217 select SYS_HAS_CPU_RM7000
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_64BIT_KERNEL
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_LITTLE_ENDIAN
223 This enables support for the Wind River MIPS32 4KC PPMC evaluation
224 board, which is based on GT64120 bridge chip.
227 bool 'MIPS simulator (MIPSsim)'
228 select DMA_NONCOHERENT
229 select SYS_HAS_EARLY_PRINTK
231 select SYS_HAS_CPU_MIPS32_R1
232 select SYS_HAS_CPU_MIPS32_R2
233 select SYS_HAS_EARLY_PRINTK
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_BIG_ENDIAN
236 select SYS_SUPPORTS_MULTITHREADING
237 select SYS_SUPPORTS_LITTLE_ENDIAN
239 This option enables support for MIPS Technologies MIPSsim software
242 config MOMENCO_OCELOT
243 bool "Momentum Ocelot board"
244 select DMA_NONCOHERENT
248 select PCI_GT64XXX_PCI0
249 select RM7000_CPU_SCACHE
251 select SYS_HAS_CPU_RM7000
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_64BIT_KERNEL
254 select SYS_SUPPORTS_BIG_ENDIAN
255 select SYS_SUPPORTS_KGDB
257 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
258 Momentum Computer <http://www.momenco.com/>.
260 config MOMENCO_OCELOT_3
261 bool "Momentum Ocelot-3 board"
263 select DMA_NONCOHERENT
269 select RM7000_CPU_SCACHE
271 select SYS_HAS_CPU_RM9000
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_64BIT_KERNEL
274 select SYS_SUPPORTS_BIG_ENDIAN
276 The Ocelot-3 is based off Discovery III System Controller and
277 PMC-Sierra Rm79000 core.
279 config MOMENCO_OCELOT_C
280 bool "Momentum Ocelot-C board"
281 select DMA_NONCOHERENT
286 select RM7000_CPU_SCACHE
288 select SYS_HAS_CPU_RM7000
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_64BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select GENERIC_HARDIRQS_NO__DO_IRQ
294 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
295 Momentum Computer <http://www.momenco.com/>.
298 bool "Philips PNX8550 based JBS board"
300 select SYS_SUPPORTS_LITTLE_ENDIAN
302 config PNX8550_STB810
303 bool "Philips PNX8550 based STB810 board"
305 select SYS_SUPPORTS_LITTLE_ENDIAN
308 bool "NEC DDB Vrc-5477"
309 select DDB5XXX_COMMON
310 select DMA_NONCOHERENT
314 select SYS_HAS_CPU_R5432
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
317 select SYS_SUPPORTS_KGDB
318 select SYS_SUPPORTS_KGDB
319 select SYS_SUPPORTS_LITTLE_ENDIAN
321 This enables support for the R5432-based NEC DDB Vrc-5477,
322 or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
324 Features : kernel debugging, serial terminal, NFS root fs, on-board
325 ether port USB, AC97, PCI, etc.
328 bool "NEC VR4100 series based machines"
329 select SYS_HAS_CPU_VR41XX
330 select GENERIC_HARDIRQS_NO__DO_IRQ
333 bool "PMC-Sierra Yosemite eval board"
340 select SYS_HAS_CPU_RM9000
341 select SYS_HAS_EARLY_PRINTK
342 select SYS_SUPPORTS_32BIT_KERNEL
343 select SYS_SUPPORTS_64BIT_KERNEL
344 select SYS_SUPPORTS_BIG_ENDIAN
345 select SYS_SUPPORTS_HIGHMEM
346 select SYS_SUPPORTS_KGDB
347 select SYS_SUPPORTS_SMP
349 Yosemite is an evaluation board for the RM9000x2 processor
350 manufactured by PMC-Sierra.
355 select GENERIC_ISA_DMA
356 select HAVE_STD_PC_SERIAL_PORT
361 select SYS_HAS_CPU_MIPS32_R1
362 select SYS_SUPPORTS_32BIT_KERNEL
363 select SYS_SUPPORTS_BIG_ENDIAN
364 select SYS_SUPPORTS_LITTLE_ENDIAN
365 select ARCH_SPARSEMEM_ENABLE
366 select GENERIC_HARDIRQS_NO__DO_IRQ
367 select NR_CPUS_DEFAULT_1
368 select SYS_SUPPORTS_SMP
370 Qemu is a software emulator which among other architectures also
371 can simulate a MIPS32 4Kc system. This patch adds support for the
372 system architecture that currently is being simulated by Qemu. It
373 will eventually be removed again when Qemu has the capability to
374 simulate actual MIPS hardware platforms. More information on Qemu
375 can be found at http://www.linux-mips.org/wiki/Qemu.
378 bool "NEC EMMA2RH Mark-eins"
379 select DMA_NONCOHERENT
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_BIG_ENDIAN
385 select SYS_SUPPORTS_LITTLE_ENDIAN
386 select SYS_HAS_CPU_R5000
388 This enables support for the R5432-based NEC Mark-eins
389 boards with R5500 CPU.
392 bool "SGI IP22 (Indy/Indigo2)"
396 select DMA_NONCOHERENT
398 select IP22_CPU_SCACHE
400 select GENERIC_ISA_DMA_SUPPORT_BROKEN
402 select SYS_HAS_CPU_R4X00
403 select SYS_HAS_CPU_R5000
404 select SYS_HAS_EARLY_PRINTK
405 select SYS_SUPPORTS_32BIT_KERNEL
406 select SYS_SUPPORTS_64BIT_KERNEL
407 select SYS_SUPPORTS_BIG_ENDIAN
409 This are the SGI Indy, Challenge S and Indigo2, as well as certain
410 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
411 that runs on these, say Y here.
414 bool "SGI IP27 (Origin200/2000)"
419 select SYS_HAS_EARLY_PRINTK
421 select NR_CPUS_DEFAULT_64
423 select SYS_HAS_CPU_R10000
424 select SYS_SUPPORTS_64BIT_KERNEL
425 select SYS_SUPPORTS_BIG_ENDIAN
426 select SYS_SUPPORTS_KGDB
427 select SYS_SUPPORTS_NUMA
428 select SYS_SUPPORTS_SMP
429 select GENERIC_HARDIRQS_NO__DO_IRQ
431 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
432 workstations. To compile a Linux kernel that runs on these, say Y
436 bool "SGI IP32 (O2) (EXPERIMENTAL)"
437 depends on EXPERIMENTAL
441 select DMA_NONCOHERENT
443 select R5000_CPU_SCACHE
444 select RM7000_CPU_SCACHE
445 select SYS_HAS_CPU_R5000
446 select SYS_HAS_CPU_R10000 if BROKEN
447 select SYS_HAS_CPU_RM7000
448 select SYS_HAS_CPU_NEVADA
449 select SYS_SUPPORTS_64BIT_KERNEL
450 select SYS_SUPPORTS_BIG_ENDIAN
452 If you want this kernel to run on SGI O2 workstation, say Y here.
455 bool "Sibyte BCM91480B-BigSur"
458 select NR_CPUS_DEFAULT_4
460 select SIBYTE_BCM1x80
462 select SYS_HAS_CPU_SB1
463 select SYS_SUPPORTS_BIG_ENDIAN
464 select SYS_SUPPORTS_LITTLE_ENDIAN
467 bool "Sibyte BCM91250A-SWARM"
470 select NR_CPUS_DEFAULT_2
473 select SYS_HAS_CPU_SB1
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_HIGHMEM
476 select SYS_SUPPORTS_KGDB
477 select SYS_SUPPORTS_LITTLE_ENDIAN
479 config SIBYTE_SENTOSA
480 bool "Sibyte BCM91250E-Sentosa"
481 depends on EXPERIMENTAL
484 select NR_CPUS_DEFAULT_2
487 select SYS_HAS_CPU_SB1
488 select SYS_SUPPORTS_BIG_ENDIAN
489 select SYS_SUPPORTS_LITTLE_ENDIAN
492 bool "Sibyte BCM91125E-Rhone"
493 depends on EXPERIMENTAL
496 select SIBYTE_BCM1125H
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
503 bool "Sibyte BCM91120x-Carmel"
504 depends on EXPERIMENTAL
507 select SIBYTE_BCM1120
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_LITTLE_ENDIAN
513 config SIBYTE_PTSWARM
514 bool "Sibyte BCM91250PT-PTSWARM"
515 depends on EXPERIMENTAL
518 select NR_CPUS_DEFAULT_2
521 select SYS_HAS_CPU_SB1
522 select SYS_SUPPORTS_BIG_ENDIAN
523 select SYS_SUPPORTS_HIGHMEM
524 select SYS_SUPPORTS_LITTLE_ENDIAN
526 config SIBYTE_LITTLESUR
527 bool "Sibyte BCM91250C2-LittleSur"
528 depends on EXPERIMENTAL
531 select NR_CPUS_DEFAULT_2
534 select SYS_HAS_CPU_SB1
535 select SYS_SUPPORTS_BIG_ENDIAN
536 select SYS_SUPPORTS_HIGHMEM
537 select SYS_SUPPORTS_LITTLE_ENDIAN
540 bool "Sibyte BCM91120C-CRhine"
541 depends on EXPERIMENTAL
544 select SIBYTE_BCM1120
546 select SYS_HAS_CPU_SB1
547 select SYS_SUPPORTS_BIG_ENDIAN
548 select SYS_SUPPORTS_LITTLE_ENDIAN
551 bool "Sibyte BCM91125C-CRhone"
552 depends on EXPERIMENTAL
555 select SIBYTE_BCM1125
557 select SYS_HAS_CPU_SB1
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_HIGHMEM
560 select SYS_SUPPORTS_LITTLE_ENDIAN
563 bool "SNI RM200/300/400"
564 select ARC if CPU_LITTLE_ENDIAN
565 select ARC32 if CPU_LITTLE_ENDIAN
566 select ARCH_MAY_HAVE_PC_FDC
568 select DMA_NONCOHERENT
569 select GENERIC_ISA_DMA
576 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
577 select SYS_HAS_CPU_R4X00
578 select SYS_HAS_CPU_R5000
579 select SYS_HAS_CPU_R10000
580 select R5000_CPU_SCACHE
581 select SYS_HAS_EARLY_PRINTK
582 select SYS_SUPPORTS_32BIT_KERNEL
583 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_HIGHMEM
586 select SYS_SUPPORTS_LITTLE_ENDIAN
588 The SNI RM200/300/400 are MIPS-based machines manufactured by
589 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
590 Technology and now in turn merged with Fujitsu. Say Y here to
591 support this machine type.
593 config TOSHIBA_JMR3927
594 bool "Toshiba JMR-TX3927 board"
595 select DMA_NONCOHERENT
599 select SYS_HAS_CPU_TX39XX
600 select SYS_SUPPORTS_32BIT_KERNEL
601 select SYS_SUPPORTS_LITTLE_ENDIAN
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select GENERIC_HARDIRQS_NO__DO_IRQ
605 config TOSHIBA_RBTX4927
606 bool "Toshiba TBTX49[23]7 board"
607 select DMA_NONCOHERENT
608 select HAS_TXX9_SERIAL
612 select SYS_HAS_CPU_TX49XX
613 select SYS_SUPPORTS_32BIT_KERNEL
614 select SYS_SUPPORTS_64BIT_KERNEL
615 select SYS_SUPPORTS_LITTLE_ENDIAN
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_KGDB
618 select GENERIC_HARDIRQS_NO__DO_IRQ
620 This Toshiba board is based on the TX4927 processor. Say Y here to
621 support this machine type
623 config TOSHIBA_RBTX4938
624 bool "Toshiba RBTX4938 board"
625 select HAVE_STD_PC_SERIAL_PORT
626 select DMA_NONCOHERENT
627 select GENERIC_ISA_DMA
628 select HAS_TXX9_SERIAL
632 select SYS_HAS_CPU_TX49XX
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_LITTLE_ENDIAN
635 select SYS_SUPPORTS_BIG_ENDIAN
636 select SYS_SUPPORTS_KGDB
637 select GENERIC_HARDIRQS_NO__DO_IRQ
639 This Toshiba board is based on the TX4938 processor. Say Y here to
640 support this machine type
644 source "arch/mips/au1000/Kconfig"
645 source "arch/mips/ddb5xxx/Kconfig"
646 source "arch/mips/jazz/Kconfig"
647 source "arch/mips/lasat/Kconfig"
648 source "arch/mips/pmc-sierra/Kconfig"
649 source "arch/mips/sgi-ip27/Kconfig"
650 source "arch/mips/sibyte/Kconfig"
651 source "arch/mips/tx4927/Kconfig"
652 source "arch/mips/tx4938/Kconfig"
653 source "arch/mips/vr41xx/Kconfig"
654 source "arch/mips/philips/pnx8550/common/Kconfig"
658 config RWSEM_GENERIC_SPINLOCK
662 config RWSEM_XCHGADD_ALGORITHM
665 config ARCH_HAS_ILOG2_U32
669 config ARCH_HAS_ILOG2_U64
673 config GENERIC_FIND_NEXT_BIT
677 config GENERIC_HWEIGHT
681 config GENERIC_CALIBRATE_DELAY
689 config SCHED_NO_NO_OMIT_FRAME_POINTER
693 config GENERIC_HARDIRQS_NO__DO_IRQ
698 # Select some configuration options automatically based on user selections.
703 config ARCH_MAY_HAVE_PC_FDC
714 select DMA_NEED_PCI_MAP_STATE
716 config DMA_NONCOHERENT
718 select DMA_NEED_PCI_MAP_STATE
720 config DMA_NEED_PCI_MAP_STATE
724 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
725 depends on SYS_HAS_EARLY_PRINTK
728 This option enables special console drivers which allow the kernel
729 to print messages very early in the bootup process.
731 This is useful for kernel debugging when your machine crashes very
732 early before the console code is initialized. For normal operation,
733 it is not recommended because it looks ugly on some machines and
734 doesn't cooperate with an X server. You should normally say N here,
735 unless you want to debug such a crash.
737 config SYS_HAS_EARLY_PRINTK
740 config GENERIC_ISA_DMA
756 config MIPS_DISABLE_OBSOLETE_IDE
762 config GENERIC_ISA_DMA_SUPPORT_BROKEN
770 # Endianess selection. Sufficiently obscure so many users don't know what to
771 # answer,so we try hard to limit the available choices. Also the use of a
772 # choice statement should be more obvious to the user.
775 prompt "Endianess selection"
777 Some MIPS machines can be configured for either little or big endian
778 byte order. These modes require different kernels and a different
779 Linux distribution. In general there is one preferred byteorder for a
780 particular system but some systems are just as commonly used in the
781 one or the other endianness.
783 config CPU_BIG_ENDIAN
785 depends on SYS_SUPPORTS_BIG_ENDIAN
787 config CPU_LITTLE_ENDIAN
789 depends on SYS_SUPPORTS_LITTLE_ENDIAN
794 config SYS_SUPPORTS_APM_EMULATION
797 config SYS_SUPPORTS_BIG_ENDIAN
800 config SYS_SUPPORTS_LITTLE_ENDIAN
815 config DDB5XXX_COMMON
817 select SYS_SUPPORTS_KGDB
819 config MIPS_BOARDS_GEN
822 config PCI_GT64XXX_PCI0
827 select HAS_TXX9_SERIAL
842 select DMA_NONCOHERENT
844 select SYS_HAS_CPU_MIPS32_R1
845 select SYS_HAS_EARLY_PRINTK
846 select SYS_SUPPORTS_32BIT_KERNEL
847 select GENERIC_HARDIRQS_NO__DO_IRQ
848 select SYS_SUPPORTS_KGDB
863 # Unfortunately not all GT64120 systems run the chip at the same clock.
864 # As the user for the clock rate and try to minimize the available options.
867 prompt "Galileo Chip Clock"
868 depends on MOMENCO_OCELOT
869 default SYSCLK_100 if MOMENCO_OCELOT
872 bool "100" if MOMENCO_OCELOT
882 config MIPS_L1_CACHE_SHIFT
884 default "4" if MACH_DECSTATION || SNI_RM
885 default "7" if SGI_IP27
888 config HAVE_STD_PC_SERIAL_PORT
892 bool "ARC console support"
893 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
897 depends on MACH_JAZZ || SNI_RM || SGI_IP32
902 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
918 bool "MIPS32 Release 1"
919 depends on SYS_HAS_CPU_MIPS32_R1
921 select CPU_HAS_PREFETCH
922 select CPU_SUPPORTS_32BIT_KERNEL
923 select CPU_SUPPORTS_HIGHMEM
925 Choose this option to build a kernel for release 1 or later of the
926 MIPS32 architecture. Most modern embedded systems with a 32-bit
927 MIPS processor are based on a MIPS32 processor. If you know the
928 specific type of processor in your system, choose those that one
929 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
930 Release 2 of the MIPS32 architecture is available since several
931 years so chances are you even have a MIPS32 Release 2 processor
932 in which case you should choose CPU_MIPS32_R2 instead for better
936 bool "MIPS32 Release 2"
937 depends on SYS_HAS_CPU_MIPS32_R2
939 select CPU_HAS_PREFETCH
940 select CPU_SUPPORTS_32BIT_KERNEL
941 select CPU_SUPPORTS_HIGHMEM
943 Choose this option to build a kernel for release 2 or later of the
944 MIPS32 architecture. Most modern embedded systems with a 32-bit
945 MIPS processor are based on a MIPS32 processor. If you know the
946 specific type of processor in your system, choose those that one
947 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
950 bool "MIPS64 Release 1"
951 depends on SYS_HAS_CPU_MIPS64_R1
953 select CPU_HAS_PREFETCH
954 select CPU_SUPPORTS_32BIT_KERNEL
955 select CPU_SUPPORTS_64BIT_KERNEL
956 select CPU_SUPPORTS_HIGHMEM
958 Choose this option to build a kernel for release 1 or later of the
959 MIPS64 architecture. Many modern embedded systems with a 64-bit
960 MIPS processor are based on a MIPS64 processor. If you know the
961 specific type of processor in your system, choose those that one
962 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
963 Release 2 of the MIPS64 architecture is available since several
964 years so chances are you even have a MIPS64 Release 2 processor
965 in which case you should choose CPU_MIPS64_R2 instead for better
969 bool "MIPS64 Release 2"
970 depends on SYS_HAS_CPU_MIPS64_R2
972 select CPU_HAS_PREFETCH
973 select CPU_SUPPORTS_32BIT_KERNEL
974 select CPU_SUPPORTS_64BIT_KERNEL
975 select CPU_SUPPORTS_HIGHMEM
977 Choose this option to build a kernel for release 2 or later of the
978 MIPS64 architecture. Many modern embedded systems with a 64-bit
979 MIPS processor are based on a MIPS64 processor. If you know the
980 specific type of processor in your system, choose those that one
981 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
985 depends on SYS_HAS_CPU_R3000
987 select CPU_SUPPORTS_32BIT_KERNEL
988 select CPU_SUPPORTS_HIGHMEM
990 Please make sure to pick the right CPU type. Linux/MIPS is not
991 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
992 *not* work on R4000 machines and vice versa. However, since most
993 of the supported machines have an R4000 (or similar) CPU, R4x00
994 might be a safe bet. If the resulting kernel does not work,
995 try to recompile with R3000.
999 depends on SYS_HAS_CPU_TX39XX
1000 select CPU_SUPPORTS_32BIT_KERNEL
1004 depends on SYS_HAS_CPU_VR41XX
1005 select CPU_SUPPORTS_32BIT_KERNEL
1006 select CPU_SUPPORTS_64BIT_KERNEL
1008 The options selects support for the NEC VR4100 series of processors.
1009 Only choose this option if you have one of these processors as a
1010 kernel built with this option will not run on any other type of
1011 processor or vice versa.
1015 depends on SYS_HAS_CPU_R4300
1017 select CPU_SUPPORTS_32BIT_KERNEL
1018 select CPU_SUPPORTS_64BIT_KERNEL
1020 MIPS Technologies R4300-series processors.
1024 depends on SYS_HAS_CPU_R4X00
1026 select CPU_SUPPORTS_32BIT_KERNEL
1027 select CPU_SUPPORTS_64BIT_KERNEL
1029 MIPS Technologies R4000-series processors other than 4300, including
1030 the R4000, R4400, R4600, and 4700.
1034 depends on SYS_HAS_CPU_TX49XX
1036 select CPU_HAS_PREFETCH
1037 select CPU_SUPPORTS_32BIT_KERNEL
1038 select CPU_SUPPORTS_64BIT_KERNEL
1042 depends on SYS_HAS_CPU_R5000
1044 select CPU_SUPPORTS_32BIT_KERNEL
1045 select CPU_SUPPORTS_64BIT_KERNEL
1047 MIPS Technologies R5000-series processors other than the Nevada.
1051 depends on SYS_HAS_CPU_R5432
1053 select CPU_SUPPORTS_32BIT_KERNEL
1054 select CPU_SUPPORTS_64BIT_KERNEL
1058 depends on EXPERIMENTAL
1060 depends on SYS_HAS_CPU_R6000
1061 select CPU_SUPPORTS_32BIT_KERNEL
1063 MIPS Technologies R6000 and R6000A series processors. Note these
1064 processors are extremely rare and the support for them is incomplete.
1068 depends on SYS_HAS_CPU_NEVADA
1070 select CPU_SUPPORTS_32BIT_KERNEL
1071 select CPU_SUPPORTS_64BIT_KERNEL
1073 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1077 depends on EXPERIMENTAL
1078 depends on SYS_HAS_CPU_R8000
1080 select CPU_HAS_PREFETCH
1081 select CPU_SUPPORTS_64BIT_KERNEL
1083 MIPS Technologies R8000 processors. Note these processors are
1084 uncommon and the support for them is incomplete.
1088 depends on SYS_HAS_CPU_R10000
1090 select CPU_HAS_PREFETCH
1091 select CPU_SUPPORTS_32BIT_KERNEL
1092 select CPU_SUPPORTS_64BIT_KERNEL
1093 select CPU_SUPPORTS_HIGHMEM
1095 MIPS Technologies R10000-series processors.
1099 depends on SYS_HAS_CPU_RM7000
1101 select CPU_HAS_PREFETCH
1102 select CPU_SUPPORTS_32BIT_KERNEL
1103 select CPU_SUPPORTS_64BIT_KERNEL
1104 select CPU_SUPPORTS_HIGHMEM
1108 depends on SYS_HAS_CPU_RM9000
1110 select CPU_HAS_PREFETCH
1111 select CPU_SUPPORTS_32BIT_KERNEL
1112 select CPU_SUPPORTS_64BIT_KERNEL
1113 select CPU_SUPPORTS_HIGHMEM
1114 select WEAK_ORDERING
1118 depends on SYS_HAS_CPU_SB1
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1122 select CPU_SUPPORTS_HIGHMEM
1123 select WEAK_ORDERING
1127 config SYS_HAS_CPU_MIPS32_R1
1130 config SYS_HAS_CPU_MIPS32_R2
1133 config SYS_HAS_CPU_MIPS64_R1
1136 config SYS_HAS_CPU_MIPS64_R2
1139 config SYS_HAS_CPU_R3000
1142 config SYS_HAS_CPU_TX39XX
1145 config SYS_HAS_CPU_VR41XX
1148 config SYS_HAS_CPU_R4300
1151 config SYS_HAS_CPU_R4X00
1154 config SYS_HAS_CPU_TX49XX
1157 config SYS_HAS_CPU_R5000
1160 config SYS_HAS_CPU_R5432
1163 config SYS_HAS_CPU_R6000
1166 config SYS_HAS_CPU_NEVADA
1169 config SYS_HAS_CPU_R8000
1172 config SYS_HAS_CPU_R10000
1175 config SYS_HAS_CPU_RM7000
1178 config SYS_HAS_CPU_RM9000
1181 config SYS_HAS_CPU_SB1
1184 config WEAK_ORDERING
1189 # These two indicate any level of the MIPS32 and MIPS64 architecture
1193 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1197 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1200 # These two indicate the revision of the architecture, either Release 1 or Release 2
1204 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1208 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1210 config SYS_SUPPORTS_32BIT_KERNEL
1212 config SYS_SUPPORTS_64BIT_KERNEL
1214 config CPU_SUPPORTS_32BIT_KERNEL
1216 config CPU_SUPPORTS_64BIT_KERNEL
1223 prompt "Kernel code model"
1225 You should only select this option if you have a workload that
1226 actually benefits from 64-bit processing or if your machine has
1227 large memory. You will only be presented a single option in this
1228 menu if your system does not support both 32-bit and 64-bit kernels.
1231 bool "32-bit kernel"
1232 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1235 Select this option if you want to build a 32-bit kernel.
1237 bool "64-bit kernel"
1238 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1240 Select this option if you want to build a 64-bit kernel.
1245 prompt "Kernel page size"
1246 default PAGE_SIZE_4KB
1248 config PAGE_SIZE_4KB
1251 This option select the standard 4kB Linux page size. On some
1252 R3000-family processors this is the only available page size. Using
1253 4kB page size will minimize memory consumption and is therefore
1254 recommended for low memory systems.
1256 config PAGE_SIZE_8KB
1258 depends on EXPERIMENTAL && CPU_R8000
1260 Using 8kB page size will result in higher performance kernel at
1261 the price of higher memory consumption. This option is available
1262 only on the R8000 processor. Not that at the time of this writing
1263 this option is still high experimental; there are also issues with
1264 compatibility of user applications.
1266 config PAGE_SIZE_16KB
1268 depends on !CPU_R3000 && !CPU_TX39XX
1270 Using 16kB page size will result in higher performance kernel at
1271 the price of higher memory consumption. This option is available on
1272 all non-R3000 family processors. Note that you will need a suitable
1273 Linux distribution to support this.
1275 config PAGE_SIZE_64KB
1277 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1279 Using 64kB page size will result in higher performance kernel at
1280 the price of higher memory consumption. This option is available on
1281 all non-R3000 family processor. Not that at the time of this
1282 writing this option is still high experimental.
1289 config IP22_CPU_SCACHE
1294 # Support for a MIPS32 / MIPS64 style S-caches
1296 config MIPS_CPU_SCACHE
1300 config R5000_CPU_SCACHE
1304 config RM7000_CPU_SCACHE
1308 config SIBYTE_DMA_PAGEOPS
1309 bool "Use DMA to clear/copy pages"
1312 Instead of using the CPU to zero and copy pages, use a Data Mover
1313 channel. These DMA channels are otherwise unused by the standard
1314 SiByte Linux port. Seems to give a small performance benefit.
1316 config CPU_HAS_PREFETCH
1320 prompt "MIPS MT options"
1322 config MIPS_MT_DISABLED
1323 bool "Disable multithreading support."
1325 Use this option if your workload can't take advantage of
1326 MIPS hardware multithreading support. On systems that don't have
1327 the option of an MT-enabled processor this option will be the only
1328 option in this menu.
1331 bool "Use 1 TC on each available VPE for SMP"
1332 depends on SYS_SUPPORTS_MULTITHREADING
1333 select CPU_MIPSR2_IRQ_VI
1334 select CPU_MIPSR2_IRQ_EI
1335 select CPU_MIPSR2_SRS
1337 select NR_CPUS_DEFAULT_2
1339 select SYS_SUPPORTS_SMP
1341 This is a kernel model which is also known a VSMP or lately
1342 has been marketesed into SMVP.
1345 bool "SMTC: Use all TCs on all VPEs for SMP"
1346 depends on CPU_MIPS32_R2
1347 #depends on CPU_MIPS64_R2 # once there is hardware ...
1348 depends on SYS_SUPPORTS_MULTITHREADING
1349 select CPU_MIPSR2_IRQ_VI
1350 select CPU_MIPSR2_IRQ_EI
1351 select CPU_MIPSR2_SRS
1353 select NR_CPUS_DEFAULT_8
1355 select SYS_SUPPORTS_SMP
1357 This is a kernel model which is known a SMTC or lately has been
1358 marketesed into SMVP.
1360 config MIPS_VPE_LOADER
1361 bool "VPE loader support."
1362 depends on SYS_SUPPORTS_MULTITHREADING
1363 select CPU_MIPSR2_IRQ_VI
1364 select CPU_MIPSR2_IRQ_EI
1365 select CPU_MIPSR2_SRS
1368 Includes a loader for loading an elf relocatable object
1369 onto another VPE and running it.
1376 config SYS_SUPPORTS_MULTITHREADING
1379 config MIPS_MT_FPAFF
1380 bool "Dynamic FPU affinity for FP-intensive threads"
1384 config MIPS_MT_SMTC_INSTANT_REPLAY
1385 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1386 depends on MIPS_MT_SMTC && !PREEMPT
1389 SMTC pseudo-interrupts between TCs are deferred and queued
1390 if the target TC is interrupt-inhibited (IXMT). In the first
1391 SMTC prototypes, these queued IPIs were serviced on return
1392 to user mode, or on entry into the kernel idle loop. The
1393 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1394 processing, which adds runtime overhead (hence the option to turn
1395 it off), but ensures that IPIs are handled promptly even under
1396 heavy I/O interrupt load.
1398 config MIPS_VPE_LOADER_TOM
1399 bool "Load VPE program into memory hidden from linux"
1400 depends on MIPS_VPE_LOADER
1403 The loader can use memory that is present but has been hidden from
1404 Linux using the kernel command line option "mem=xxMB". It's up to
1405 you to ensure the amount you put in the option and the space your
1406 program requires is less or equal to the amount physically present.
1408 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1409 config MIPS_VPE_APSP_API
1410 bool "Enable support for AP/SP API (RTLX)"
1411 depends on MIPS_VPE_LOADER
1414 config MIPS_APSP_KSPD
1416 depends on MIPS_VPE_APSP_API
1419 KSPD is a kernel daemon that accepts syscall requests from the SP
1420 side, actions them and returns the results. It also handles the
1421 "exit" syscall notifying other kernel modules the SP program is
1422 exiting. You probably want to say yes here.
1424 config SB1_PASS_1_WORKAROUNDS
1426 depends on CPU_SB1_PASS_1
1429 config SB1_PASS_2_WORKAROUNDS
1431 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1434 config SB1_PASS_2_1_WORKAROUNDS
1436 depends on CPU_SB1 && CPU_SB1_PASS_2
1439 config 64BIT_PHYS_ADDR
1440 bool "Support for 64-bit physical address space"
1441 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1446 config CPU_HAS_SMARTMIPS
1447 depends on SYS_SUPPORTS_SMARTMIPS
1448 bool "Support for the SmartMIPS ASE"
1450 SmartMIPS is a extension of the MIPS32 architecture aimed at
1451 increased security at both hardware and software level for
1452 smartcards. Enabling this option will allow proper use of the
1453 SmartMIPS instructions by Linux applications. However a kernel with
1454 this option will not work on a MIPS core without SmartMIPS core. If
1455 you don't know you probably don't have SmartMIPS and should say N
1462 # Vectored interrupt mode is an R2 feature
1464 config CPU_MIPSR2_IRQ_VI
1468 # Extended interrupt mode is an R2 feature
1470 config CPU_MIPSR2_IRQ_EI
1474 # Shadow registers are an R2 feature
1476 config CPU_MIPSR2_SRS
1481 depends on !CPU_R3000
1485 # Use the generic interrupt handling code in kernel/irq/:
1487 config GENERIC_HARDIRQS
1491 config GENERIC_IRQ_PROBE
1499 # - Highmem only makes sense for the 32-bit kernel.
1500 # - The current highmem code will only work properly on physically indexed
1501 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1502 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1503 # moment we protect the user and offer the highmem option only on machines
1504 # where it's known to be safe. This will not offer highmem on a few systems
1505 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1506 # indexed CPUs but we're playing safe.
1507 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1508 # know they might have memory configurations that could make use of highmem
1512 bool "High Memory Support"
1513 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1515 config CPU_SUPPORTS_HIGHMEM
1518 config SYS_SUPPORTS_HIGHMEM
1521 config SYS_SUPPORTS_SMARTMIPS
1524 config ARCH_FLATMEM_ENABLE
1528 config ARCH_DISCONTIGMEM_ENABLE
1530 default y if SGI_IP27
1532 Say Y to support efficient handling of discontiguous physical memory,
1533 for architectures which are either NUMA (Non-Uniform Memory Access)
1534 or have huge holes in the physical address space for other reasons.
1535 See <file:Documentation/vm/numa> for more.
1537 config ARCH_SPARSEMEM_ENABLE
1539 select SPARSEMEM_STATIC
1543 depends on SYS_SUPPORTS_NUMA
1545 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1546 Access). This option improves performance on systems with more
1547 than two nodes; on two node systems it is generally better to
1548 leave it disabled; on single node systems disable this option
1551 config SYS_SUPPORTS_NUMA
1557 depends on NEED_MULTIPLE_NODES
1562 bool "Multi-Processing support"
1563 depends on SYS_SUPPORTS_SMP
1566 This enables support for systems with more than one CPU. If you have
1567 a system with only one CPU, like most personal computers, say N. If
1568 you have a system with more than one CPU, say Y.
1570 If you say N here, the kernel will run on single and multiprocessor
1571 machines, but will use only one CPU of a multiprocessor machine. If
1572 you say Y here, the kernel will run on many, but not all,
1573 singleprocessor machines. On a singleprocessor machine, the kernel
1574 will run faster if you say N here.
1576 People using multiprocessor machines who say Y here should also say
1577 Y to "Enhanced Real Time Clock Support", below.
1579 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1580 available at <http://www.tldp.org/docs.html#howto>.
1582 If you don't know what to do here, say N.
1584 config SYS_SUPPORTS_SMP
1587 config NR_CPUS_DEFAULT_1
1590 config NR_CPUS_DEFAULT_2
1593 config NR_CPUS_DEFAULT_4
1596 config NR_CPUS_DEFAULT_8
1599 config NR_CPUS_DEFAULT_16
1602 config NR_CPUS_DEFAULT_32
1605 config NR_CPUS_DEFAULT_64
1609 int "Maximum number of CPUs (2-64)"
1610 range 1 64 if NR_CPUS_DEFAULT_1
1612 default "1" if NR_CPUS_DEFAULT_1
1613 default "2" if NR_CPUS_DEFAULT_2
1614 default "4" if NR_CPUS_DEFAULT_4
1615 default "8" if NR_CPUS_DEFAULT_8
1616 default "16" if NR_CPUS_DEFAULT_16
1617 default "32" if NR_CPUS_DEFAULT_32
1618 default "64" if NR_CPUS_DEFAULT_64
1620 This allows you to specify the maximum number of CPUs which this
1621 kernel will support. The maximum supported value is 32 for 32-bit
1622 kernel and 64 for 64-bit kernels; the minimum value which makes
1623 sense is 1 for Qemu (useful only for kernel debugging purposes)
1624 and 2 for all others.
1626 This is purely to save memory - each supported CPU adds
1627 approximately eight kilobytes to the kernel image. For best
1628 performance should round up your number of processors to the next
1632 # Timer Interrupt Frequency Configuration
1636 prompt "Timer frequency"
1639 Allows the configuration of the timer frequency.
1642 bool "48 HZ" if SYS_SUPPORTS_48HZ
1645 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1648 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1651 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1654 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1657 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1660 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1664 config SYS_SUPPORTS_48HZ
1667 config SYS_SUPPORTS_100HZ
1670 config SYS_SUPPORTS_128HZ
1673 config SYS_SUPPORTS_250HZ
1676 config SYS_SUPPORTS_256HZ
1679 config SYS_SUPPORTS_1000HZ
1682 config SYS_SUPPORTS_1024HZ
1685 config SYS_SUPPORTS_ARBIT_HZ
1687 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1688 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1689 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1690 !SYS_SUPPORTS_1024HZ
1695 default 100 if HZ_100
1696 default 128 if HZ_128
1697 default 250 if HZ_250
1698 default 256 if HZ_256
1699 default 1000 if HZ_1000
1700 default 1024 if HZ_1024
1702 source "kernel/Kconfig.preempt"
1704 config MIPS_INSANE_LARGE
1705 bool "Support for large 64-bit configurations"
1706 depends on CPU_R10000 && 64BIT
1708 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1709 previous 64-bit processors which only supported 40 bit / 1TB. If you
1710 need processes of more than 1TB virtual address space, say Y here.
1711 This will result in additional memory usage, so it is not
1712 recommended for normal users.
1715 bool "Kexec system call (EXPERIMENTAL)"
1716 depends on EXPERIMENTAL
1718 kexec is a system call that implements the ability to shutdown your
1719 current kernel, and to start another kernel. It is like a reboot
1720 but it is independent of the system firmware. And like a reboot
1721 you can start any kernel with it, not just Linux.
1723 The name comes from the similiarity to the exec system call.
1725 It is an ongoing process to be certain the hardware in a machine
1726 is properly shutdown, so do not be surprised if this code does not
1727 initially work for you. It may help to enable device hotplugging
1728 support. As of this writing the exact hardware interface is
1729 strongly in flux, so no good recommendation can be made.
1732 bool "Enable seccomp to safely compute untrusted bytecode"
1733 depends on PROC_FS && BROKEN
1736 This kernel feature is useful for number crunching applications
1737 that may need to compute untrusted bytecode during their
1738 execution. By using pipes or other transports made available to
1739 the process as file descriptors supporting the read/write
1740 syscalls, it's possible to isolate those applications in
1741 their own address space using seccomp. Once seccomp is
1742 enabled via /proc/<pid>/seccomp, it cannot be disabled
1743 and the task is only allowed to execute a few safe syscalls
1744 defined by each seccomp mode.
1746 If unsure, say Y. Only embedded should say N here.
1750 config RWSEM_GENERIC_SPINLOCK
1754 config LOCKDEP_SUPPORT
1758 config STACKTRACE_SUPPORT
1762 source "init/Kconfig"
1764 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1772 bool "Support for PCI controller"
1773 depends on HW_HAS_PCI
1775 Find out whether you have a PCI motherboard. PCI is the name of a
1776 bus system, i.e. the way the CPU talks to the other stuff inside
1777 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1780 The PCI-HOWTO, available from
1781 <http://www.tldp.org/docs.html#howto>, contains valuable
1782 information about which PCI hardware does work under Linux and which
1789 source "drivers/pci/Kconfig"
1792 # ISA support is now enabled via select. Too many systems still have the one
1793 # or other ISA chip on the board that users don't know about so don't expect
1794 # users to choose the right thing ...
1801 depends on HW_HAS_EISA
1803 select GENERIC_ISA_DMA
1805 The Extended Industry Standard Architecture (EISA) bus was
1806 developed as an open alternative to the IBM MicroChannel bus.
1808 The EISA bus provided some of the features of the IBM MicroChannel
1809 bus while maintaining backward compatibility with cards made for
1810 the older ISA bus. The EISA bus saw limited use between 1988 and
1811 1995 when it was made obsolete by the PCI bus.
1813 Say Y here if you are building a kernel for an EISA-based machine.
1817 source "drivers/eisa/Kconfig"
1820 bool "TURBOchannel support"
1821 depends on MACH_DECSTATION
1823 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1824 processors. Documentation on writing device drivers for TurboChannel
1826 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1829 # bool "Access.Bus support"
1839 source "drivers/pcmcia/Kconfig"
1841 source "drivers/pci/hotplug/Kconfig"
1845 menu "Executable file formats"
1847 source "fs/Kconfig.binfmt"
1853 bool "Use 64-bit ELF format for building"
1856 A 64-bit kernel is usually built using the 64-bit ELF binary object
1857 format as it's one that allows arbitrary 64-bit constructs. For
1858 kernels that are loaded within the KSEG compatibility segments the
1859 32-bit ELF format can optionally be used resulting in a somewhat
1860 smaller binary, but this option is not explicitly supported by the
1861 toolchain and since binutils 2.14 it does not even work at all.
1863 Say Y to use the 64-bit format or N to use the 32-bit one.
1868 bool "Include IRIX binary compatibility"
1869 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1871 config MIPS32_COMPAT
1872 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1875 Select this option if you want Linux/MIPS 32-bit binary
1876 compatibility. Since all software available for Linux/MIPS is
1877 currently 32-bit you should say Y here.
1881 depends on MIPS32_COMPAT
1884 config SYSVIPC_COMPAT
1886 depends on COMPAT && SYSVIPC
1890 bool "Kernel support for o32 binaries"
1891 depends on MIPS32_COMPAT
1893 Select this option if you want to run o32 binaries. These are pure
1894 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1895 existing binaries are in this format.
1900 bool "Kernel support for n32 binaries"
1901 depends on MIPS32_COMPAT
1903 Select this option if you want to run n32 binaries. These are
1904 64-bit binaries using 32-bit quantities for addressing and certain
1905 data that would normally be 64-bit. They are used in special
1912 default y if MIPS32_O32 || MIPS32_N32
1916 menu "Power management options"
1918 source "kernel/power/Kconfig"
1922 source "net/Kconfig"
1924 source "drivers/Kconfig"
1928 source "arch/mips/oprofile/Kconfig"
1930 source "arch/mips/Kconfig.debug"
1932 source "security/Kconfig"
1934 source "crypto/Kconfig"
1936 source "lib/Kconfig"