4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "Alchemy processor based machines"
22 bool "Basler eXcite smart camera"
29 select SYS_HAS_CPU_RM9000
30 select SYS_SUPPORTS_32BIT_KERNEL
31 select SYS_SUPPORTS_BIG_ENDIAN
32 select SYS_SUPPORTS_KGDB
34 The eXcite is a smart camera platform manufactured by
35 Basler Vision Technologies AG.
37 config BASLER_EXCITE_PROTOTYPE
38 bool "Support for pre-release units"
39 depends on BASLER_EXCITE
42 Pre-series (prototype) units are different from later ones in
43 some ways. Select this option if you have one of these. Please
44 note that a kernel built with this option selected will not be
45 able to run on normal units.
48 bool "BCM47XX based boards"
49 select DMA_NONCOHERENT
52 select SYS_HAS_CPU_MIPS32_R1
53 select SYS_SUPPORTS_32BIT_KERNEL
54 select SYS_SUPPORTS_LITTLE_ENDIAN
56 select SSB_DRIVER_MIPS
58 select SYS_HAS_EARLY_PRINTK
61 Support for BCM47XX based boards
65 select DMA_NONCOHERENT
70 select PCI_GT64XXX_PCI0
71 select SYS_HAS_CPU_NEVADA
72 select SYS_HAS_EARLY_PRINTK
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
75 select SYS_SUPPORTS_LITTLE_ENDIAN
76 select GENERIC_HARDIRQS_NO__DO_IRQ
78 config MACH_DECSTATION
81 select DMA_NONCOHERENT
84 select SYS_HAS_CPU_R3000
85 select SYS_HAS_CPU_R4X00
86 select SYS_SUPPORTS_32BIT_KERNEL
87 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
88 select SYS_SUPPORTS_LITTLE_ENDIAN
89 select SYS_SUPPORTS_128HZ
90 select SYS_SUPPORTS_256HZ
91 select SYS_SUPPORTS_1024HZ
93 This enables support for DEC's MIPS based workstations. For details
94 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
95 DECstation porting pages on <http://decstation.unix-ag.org/>.
97 If you have one of the following DECstation Models you definitely
98 want to choose R4xx0 for the CPU Type:
105 otherwise choose R3000.
108 bool "Jazz family of machines"
111 select ARCH_MAY_HAVE_PC_FDC
112 select GENERIC_ISA_DMA
117 select SYS_HAS_CPU_R4X00
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
120 select SYS_SUPPORTS_100HZ
121 select GENERIC_HARDIRQS_NO__DO_IRQ
123 This a family of machines based on the MIPS R4030 chipset which was
124 used by several vendors to build RISC/os and Windows NT workstations.
125 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
126 Olivetti M700-10 workstations.
129 bool "LASAT Networks platforms"
130 select DMA_NONCOHERENT
131 select SYS_HAS_EARLY_PRINTK
133 select PCI_GT64XXX_PCI0
135 select R5000_CPU_SCACHE
136 select SYS_HAS_CPU_R5000
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
139 select SYS_SUPPORTS_LITTLE_ENDIAN
140 select GENERIC_HARDIRQS_NO__DO_IRQ
143 bool "Lemote Fulong mini-PC"
144 select ARCH_SPARSEMEM_ENABLE
145 select SYS_HAS_CPU_LOONGSON2
146 select DMA_NONCOHERENT
149 select HAVE_STD_PC_SERIAL_PORT
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_HIGHMEM
158 select SYS_HAS_EARLY_PRINTK
159 select GENERIC_HARDIRQS_NO__DO_IRQ
160 select GENERIC_ISA_DMA_SUPPORT_BROKEN
163 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
167 bool "MIPS Atlas board"
169 select DMA_NONCOHERENT
170 select SYS_HAS_EARLY_PRINTK
173 select MIPS_BOARDS_GEN
175 select PCI_GT64XXX_PCI0
177 select RM7000_CPU_SCACHE
179 select SYS_HAS_CPU_MIPS32_R1
180 select SYS_HAS_CPU_MIPS32_R2
181 select SYS_HAS_CPU_MIPS64_R1
182 select SYS_HAS_CPU_NEVADA
183 select SYS_HAS_CPU_RM7000
184 select SYS_SUPPORTS_32BIT_KERNEL
185 select SYS_SUPPORTS_64BIT_KERNEL
186 select SYS_SUPPORTS_BIG_ENDIAN
187 select SYS_SUPPORTS_LITTLE_ENDIAN
188 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
189 select SYS_SUPPORTS_SMARTMIPS
190 select GENERIC_HARDIRQS_NO__DO_IRQ
192 This enables support for the MIPS Technologies Atlas evaluation
196 bool "MIPS Malta board"
197 select ARCH_MAY_HAVE_PC_FDC
199 select DMA_NONCOHERENT
200 select GENERIC_ISA_DMA
204 select MIPS_BOARDS_GEN
206 select MIPS_CPU_SCACHE
207 select PCI_GT64XXX_PCI0
210 select SYS_HAS_CPU_MIPS32_R1
211 select SYS_HAS_CPU_MIPS32_R2
212 select SYS_HAS_CPU_MIPS64_R1
213 select SYS_HAS_CPU_NEVADA
214 select SYS_HAS_CPU_RM7000
215 select SYS_HAS_EARLY_PRINTK
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_64BIT_KERNEL
218 select SYS_SUPPORTS_BIG_ENDIAN
219 select SYS_SUPPORTS_LITTLE_ENDIAN
220 select SYS_SUPPORTS_MULTITHREADING
221 select SYS_SUPPORTS_SMARTMIPS
223 This enables support for the MIPS Technologies Malta evaluation
227 bool "MIPS SEAD board"
229 select DMA_NONCOHERENT
230 select SYS_HAS_EARLY_PRINTK
231 select MIPS_BOARDS_GEN
232 select SYS_HAS_CPU_MIPS32_R1
233 select SYS_HAS_CPU_MIPS32_R2
234 select SYS_HAS_CPU_MIPS64_R1
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_LITTLE_ENDIAN
239 select SYS_SUPPORTS_SMARTMIPS
241 This enables support for the MIPS Technologies SEAD evaluation
245 bool 'MIPS simulator (MIPSsim)'
246 select DMA_NONCOHERENT
247 select SYS_HAS_EARLY_PRINTK
250 select SYS_HAS_CPU_MIPS32_R1
251 select SYS_HAS_CPU_MIPS32_R2
252 select SYS_HAS_EARLY_PRINTK
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_BIG_ENDIAN
255 select SYS_SUPPORTS_MULTITHREADING
256 select SYS_SUPPORTS_LITTLE_ENDIAN
258 This option enables support for MIPS Technologies MIPSsim software
262 bool "NEC EMMA2RH Mark-eins"
263 select DMA_NONCOHERENT
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_BIG_ENDIAN
269 select SYS_SUPPORTS_LITTLE_ENDIAN
270 select SYS_HAS_CPU_R5000
272 This enables support for the R5432-based NEC Mark-eins
273 boards with R5500 CPU.
276 bool "NEC VR4100 series based machines"
277 select SYS_HAS_CPU_VR41XX
278 select GENERIC_HARDIRQS_NO__DO_IRQ
281 bool "Philips PNX8550 based JBS board"
283 select SYS_SUPPORTS_LITTLE_ENDIAN
285 config PNX8550_STB810
286 bool "Philips PNX8550 based STB810 board"
288 select SYS_SUPPORTS_LITTLE_ENDIAN
291 bool "PMC-Sierra MSP chipsets"
292 depends on EXPERIMENTAL
293 select DMA_NONCOHERENT
295 select NO_EXCEPT_FILL
297 select SYS_HAS_CPU_MIPS32_R1
298 select SYS_HAS_CPU_MIPS32_R2
299 select SYS_SUPPORTS_32BIT_KERNEL
300 select SYS_SUPPORTS_BIG_ENDIAN
301 select SYS_SUPPORTS_KGDB
304 select SERIAL_8250_CONSOLE
306 This adds support for the PMC-Sierra family of Multi-Service
307 Processor System-On-A-Chips. These parts include a number
308 of integrated peripherals, interfaces and DSPs in addition to
309 a variety of MIPS cores.
312 bool "PMC-Sierra Yosemite eval board"
319 select SYS_HAS_CPU_RM9000
320 select SYS_HAS_EARLY_PRINTK
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_64BIT_KERNEL
323 select SYS_SUPPORTS_BIG_ENDIAN
324 select SYS_SUPPORTS_HIGHMEM
325 select SYS_SUPPORTS_KGDB
326 select SYS_SUPPORTS_SMP
328 Yosemite is an evaluation board for the RM9000x2 processor
329 manufactured by PMC-Sierra.
334 select GENERIC_ISA_DMA
335 select HAVE_STD_PC_SERIAL_PORT
340 select SYS_HAS_CPU_MIPS32_R1
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_BIG_ENDIAN
343 select SYS_SUPPORTS_LITTLE_ENDIAN
344 select ARCH_SPARSEMEM_ENABLE
345 select GENERIC_HARDIRQS_NO__DO_IRQ
346 select NR_CPUS_DEFAULT_1
347 select SYS_SUPPORTS_SMP
349 Qemu is a software emulator which among other architectures also
350 can simulate a MIPS32 4Kc system. This patch adds support for the
351 system architecture that currently is being simulated by Qemu. It
352 will eventually be removed again when Qemu has the capability to
353 simulate actual MIPS hardware platforms. More information on Qemu
354 can be found at http://www.linux-mips.org/wiki/Qemu.
357 bool "SGI IP22 (Indy/Indigo2)"
361 select DMA_NONCOHERENT
363 select IP22_CPU_SCACHE
365 select GENERIC_ISA_DMA_SUPPORT_BROKEN
367 select SYS_HAS_CPU_R4X00
368 select SYS_HAS_CPU_R5000
369 select SYS_HAS_EARLY_PRINTK
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_BIG_ENDIAN
374 This are the SGI Indy, Challenge S and Indigo2, as well as certain
375 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
376 that runs on these, say Y here.
379 bool "SGI IP27 (Origin200/2000)"
384 select SYS_HAS_EARLY_PRINTK
386 select NR_CPUS_DEFAULT_64
387 select SYS_HAS_CPU_R10000
388 select SYS_SUPPORTS_64BIT_KERNEL
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_KGDB
391 select SYS_SUPPORTS_NUMA
392 select SYS_SUPPORTS_SMP
393 select GENERIC_HARDIRQS_NO__DO_IRQ
395 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
396 workstations. To compile a Linux kernel that runs on these, say Y
404 select DMA_NONCOHERENT
406 select R5000_CPU_SCACHE
407 select RM7000_CPU_SCACHE
408 select SYS_HAS_CPU_R5000
409 select SYS_HAS_CPU_R10000 if BROKEN
410 select SYS_HAS_CPU_RM7000
411 select SYS_HAS_CPU_NEVADA
412 select SYS_SUPPORTS_64BIT_KERNEL
413 select SYS_SUPPORTS_BIG_ENDIAN
415 If you want this kernel to run on SGI O2 workstation, say Y here.
418 bool "Sibyte BCM91120C-CRhine"
419 depends on EXPERIMENTAL
422 select SIBYTE_BCM1120
424 select SYS_HAS_CPU_SB1
425 select SYS_SUPPORTS_BIG_ENDIAN
426 select SYS_SUPPORTS_LITTLE_ENDIAN
429 bool "Sibyte BCM91120x-Carmel"
430 depends on EXPERIMENTAL
433 select SIBYTE_BCM1120
435 select SYS_HAS_CPU_SB1
436 select SYS_SUPPORTS_BIG_ENDIAN
437 select SYS_SUPPORTS_LITTLE_ENDIAN
440 bool "Sibyte BCM91125C-CRhone"
441 depends on EXPERIMENTAL
444 select SIBYTE_BCM1125
446 select SYS_HAS_CPU_SB1
447 select SYS_SUPPORTS_BIG_ENDIAN
448 select SYS_SUPPORTS_HIGHMEM
449 select SYS_SUPPORTS_LITTLE_ENDIAN
452 bool "Sibyte BCM91125E-Rhone"
453 depends on EXPERIMENTAL
456 select SIBYTE_BCM1125H
458 select SYS_HAS_CPU_SB1
459 select SYS_SUPPORTS_BIG_ENDIAN
460 select SYS_SUPPORTS_LITTLE_ENDIAN
463 bool "Sibyte BCM91250A-SWARM"
466 select NR_CPUS_DEFAULT_2
469 select SYS_HAS_CPU_SB1
470 select SYS_SUPPORTS_BIG_ENDIAN
471 select SYS_SUPPORTS_HIGHMEM
472 select SYS_SUPPORTS_KGDB
473 select SYS_SUPPORTS_LITTLE_ENDIAN
475 config SIBYTE_LITTLESUR
476 bool "Sibyte BCM91250C2-LittleSur"
477 depends on EXPERIMENTAL
480 select NR_CPUS_DEFAULT_2
483 select SYS_HAS_CPU_SB1
484 select SYS_SUPPORTS_BIG_ENDIAN
485 select SYS_SUPPORTS_HIGHMEM
486 select SYS_SUPPORTS_LITTLE_ENDIAN
488 config SIBYTE_SENTOSA
489 bool "Sibyte BCM91250E-Sentosa"
490 depends on EXPERIMENTAL
493 select NR_CPUS_DEFAULT_2
496 select SYS_HAS_CPU_SB1
497 select SYS_SUPPORTS_BIG_ENDIAN
498 select SYS_SUPPORTS_LITTLE_ENDIAN
500 config SIBYTE_PTSWARM
501 bool "Sibyte BCM91250PT-PTSWARM"
502 depends on EXPERIMENTAL
505 select NR_CPUS_DEFAULT_2
508 select SYS_HAS_CPU_SB1
509 select SYS_SUPPORTS_BIG_ENDIAN
510 select SYS_SUPPORTS_HIGHMEM
511 select SYS_SUPPORTS_LITTLE_ENDIAN
514 bool "Sibyte BCM91480B-BigSur"
517 select NR_CPUS_DEFAULT_4
518 select SIBYTE_BCM1x80
520 select SYS_HAS_CPU_SB1
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_LITTLE_ENDIAN
525 bool "SNI RM200/300/400"
526 select ARC if CPU_LITTLE_ENDIAN
527 select ARC32 if CPU_LITTLE_ENDIAN
528 select ARCH_MAY_HAVE_PC_FDC
530 select DMA_NONCOHERENT
531 select GENERIC_ISA_DMA
538 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
539 select SYS_HAS_CPU_R4X00
540 select SYS_HAS_CPU_R5000
541 select SYS_HAS_CPU_R10000
542 select R5000_CPU_SCACHE
543 select SYS_HAS_EARLY_PRINTK
544 select SYS_SUPPORTS_32BIT_KERNEL
545 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
546 select SYS_SUPPORTS_BIG_ENDIAN
547 select SYS_SUPPORTS_HIGHMEM
548 select SYS_SUPPORTS_LITTLE_ENDIAN
550 The SNI RM200/300/400 are MIPS-based machines manufactured by
551 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
552 Technology and now in turn merged with Fujitsu. Say Y here to
553 support this machine type.
555 config TOSHIBA_JMR3927
556 bool "Toshiba JMR-TX3927 board"
557 select DMA_NONCOHERENT
562 select SYS_HAS_CPU_TX39XX
563 select SYS_SUPPORTS_32BIT_KERNEL
564 select SYS_SUPPORTS_LITTLE_ENDIAN
565 select SYS_SUPPORTS_BIG_ENDIAN
566 select GENERIC_HARDIRQS_NO__DO_IRQ
568 config TOSHIBA_RBTX4927
569 bool "Toshiba RBTX49[23]7 board"
570 select DMA_NONCOHERENT
571 select HAS_TXX9_SERIAL
575 select I8259 if TOSHIBA_FPCIB0
577 select SYS_HAS_CPU_TX49XX
578 select SYS_SUPPORTS_32BIT_KERNEL
579 select SYS_SUPPORTS_64BIT_KERNEL
580 select SYS_SUPPORTS_LITTLE_ENDIAN
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_KGDB
583 select GENERIC_HARDIRQS_NO__DO_IRQ
585 This Toshiba board is based on the TX4927 processor. Say Y here to
586 support this machine type
588 config TOSHIBA_RBTX4938
589 bool "Toshiba RBTX4938 board"
590 select DMA_NONCOHERENT
591 select HAS_TXX9_SERIAL
596 select SYS_HAS_CPU_TX49XX
597 select SYS_SUPPORTS_32BIT_KERNEL
598 select SYS_SUPPORTS_LITTLE_ENDIAN
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select SYS_SUPPORTS_KGDB
601 select GENERIC_HARDIRQS_NO__DO_IRQ
604 This Toshiba board is based on the TX4938 processor. Say Y here to
605 support this machine type
608 bool "Wind River PPMC board"
611 select DMA_NONCOHERENT
613 select PCI_GT64XXX_PCI0
615 select SYS_HAS_CPU_MIPS32_R1
616 select SYS_HAS_CPU_MIPS32_R2
617 select SYS_HAS_CPU_MIPS64_R1
618 select SYS_HAS_CPU_NEVADA
619 select SYS_HAS_CPU_RM7000
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_64BIT_KERNEL
622 select SYS_SUPPORTS_BIG_ENDIAN
623 select SYS_SUPPORTS_LITTLE_ENDIAN
625 This enables support for the Wind River MIPS32 4KC PPMC evaluation
626 board, which is based on GT64120 bridge chip.
630 source "arch/mips/au1000/Kconfig"
631 source "arch/mips/jazz/Kconfig"
632 source "arch/mips/lasat/Kconfig"
633 source "arch/mips/pmc-sierra/Kconfig"
634 source "arch/mips/sgi-ip27/Kconfig"
635 source "arch/mips/sibyte/Kconfig"
636 source "arch/mips/tx4927/Kconfig"
637 source "arch/mips/tx4938/Kconfig"
638 source "arch/mips/vr41xx/Kconfig"
642 config RWSEM_GENERIC_SPINLOCK
646 config RWSEM_XCHGADD_ALGORITHM
649 config ARCH_HAS_ILOG2_U32
653 config ARCH_HAS_ILOG2_U64
657 config GENERIC_FIND_NEXT_BIT
661 config GENERIC_HWEIGHT
665 config GENERIC_CALIBRATE_DELAY
673 config GENERIC_CMOS_UPDATE
677 config SCHED_NO_NO_OMIT_FRAME_POINTER
681 config GENERIC_HARDIRQS_NO__DO_IRQ
686 # Select some configuration options automatically based on user selections.
691 config ARCH_MAY_HAVE_PC_FDC
708 select DMA_NEED_PCI_MAP_STATE
710 config DMA_NONCOHERENT
712 select DMA_NEED_PCI_MAP_STATE
714 config DMA_NEED_PCI_MAP_STATE
718 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
719 depends on SYS_HAS_EARLY_PRINTK
722 This option enables special console drivers which allow the kernel
723 to print messages very early in the bootup process.
725 This is useful for kernel debugging when your machine crashes very
726 early before the console code is initialized. For normal operation,
727 it is not recommended because it looks ugly on some machines and
728 doesn't cooperate with an X server. You should normally say N here,
729 unless you want to debug such a crash.
731 config SYS_HAS_EARLY_PRINTK
750 config MIPS_DISABLE_OBSOLETE_IDE
756 config GENERIC_ISA_DMA
758 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
760 config GENERIC_ISA_DMA_SUPPORT_BROKEN
762 select GENERIC_ISA_DMA
768 # Endianess selection. Sufficiently obscure so many users don't know what to
769 # answer,so we try hard to limit the available choices. Also the use of a
770 # choice statement should be more obvious to the user.
773 prompt "Endianess selection"
775 Some MIPS machines can be configured for either little or big endian
776 byte order. These modes require different kernels and a different
777 Linux distribution. In general there is one preferred byteorder for a
778 particular system but some systems are just as commonly used in the
779 one or the other endianness.
781 config CPU_BIG_ENDIAN
783 depends on SYS_SUPPORTS_BIG_ENDIAN
785 config CPU_LITTLE_ENDIAN
787 depends on SYS_SUPPORTS_LITTLE_ENDIAN
792 config SYS_SUPPORTS_APM_EMULATION
795 config SYS_SUPPORTS_BIG_ENDIAN
798 config SYS_SUPPORTS_LITTLE_ENDIAN
822 config MIPS_BOARDS_GEN
825 config PCI_GT64XXX_PCI0
828 config NO_EXCEPT_FILL
833 select HAS_TXX9_SERIAL
845 select DMA_NONCOHERENT
847 select SYS_HAS_CPU_MIPS32_R1
848 select SYS_HAS_EARLY_PRINTK
849 select SYS_SUPPORTS_32BIT_KERNEL
850 select GENERIC_HARDIRQS_NO__DO_IRQ
851 select SYS_SUPPORTS_KGDB
871 config MIPS_L1_CACHE_SHIFT
873 default "4" if MACH_DECSTATION
874 default "7" if SGI_IP27 || SNI_RM
875 default "4" if PMC_MSP4200_EVAL
878 config HAVE_STD_PC_SERIAL_PORT
882 bool "ARC console support"
883 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
887 depends on MACH_JAZZ || SNI_RM || SGI_IP32
892 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
909 depends on SYS_HAS_CPU_LOONGSON2
910 select CPU_SUPPORTS_32BIT_KERNEL
911 select CPU_SUPPORTS_64BIT_KERNEL
912 select CPU_SUPPORTS_HIGHMEM
914 The Loongson 2E processor implements the MIPS III instruction set
915 with many extensions.
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_LOONGSON2
1130 config SYS_HAS_CPU_MIPS32_R1
1133 config SYS_HAS_CPU_MIPS32_R2
1136 config SYS_HAS_CPU_MIPS64_R1
1139 config SYS_HAS_CPU_MIPS64_R2
1142 config SYS_HAS_CPU_R3000
1145 config SYS_HAS_CPU_TX39XX
1148 config SYS_HAS_CPU_VR41XX
1151 config SYS_HAS_CPU_R4300
1154 config SYS_HAS_CPU_R4X00
1157 config SYS_HAS_CPU_TX49XX
1160 config SYS_HAS_CPU_R5000
1163 config SYS_HAS_CPU_R5432
1166 config SYS_HAS_CPU_R6000
1169 config SYS_HAS_CPU_NEVADA
1172 config SYS_HAS_CPU_R8000
1175 config SYS_HAS_CPU_R10000
1178 config SYS_HAS_CPU_RM7000
1181 config SYS_HAS_CPU_RM9000
1184 config SYS_HAS_CPU_SB1
1188 # CPU may reorder R->R, R->W, W->R, W->W
1189 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1191 config WEAK_ORDERING
1195 # CPU may reorder reads and writes beyond LL/SC
1196 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1198 config WEAK_REORDERING_BEYOND_LLSC
1203 # These two indicate any level of the MIPS32 and MIPS64 architecture
1207 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1211 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1214 # These two indicate the revision of the architecture, either Release 1 or Release 2
1218 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1222 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1224 config SYS_SUPPORTS_32BIT_KERNEL
1226 config SYS_SUPPORTS_64BIT_KERNEL
1228 config CPU_SUPPORTS_32BIT_KERNEL
1230 config CPU_SUPPORTS_64BIT_KERNEL
1237 prompt "Kernel code model"
1239 You should only select this option if you have a workload that
1240 actually benefits from 64-bit processing or if your machine has
1241 large memory. You will only be presented a single option in this
1242 menu if your system does not support both 32-bit and 64-bit kernels.
1245 bool "32-bit kernel"
1246 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1249 Select this option if you want to build a 32-bit kernel.
1251 bool "64-bit kernel"
1252 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1254 Select this option if you want to build a 64-bit kernel.
1259 prompt "Kernel page size"
1260 default PAGE_SIZE_4KB
1262 config PAGE_SIZE_4KB
1265 This option select the standard 4kB Linux page size. On some
1266 R3000-family processors this is the only available page size. Using
1267 4kB page size will minimize memory consumption and is therefore
1268 recommended for low memory systems.
1270 config PAGE_SIZE_8KB
1272 depends on EXPERIMENTAL && CPU_R8000
1274 Using 8kB page size will result in higher performance kernel at
1275 the price of higher memory consumption. This option is available
1276 only on the R8000 processor. Not that at the time of this writing
1277 this option is still high experimental; there are also issues with
1278 compatibility of user applications.
1280 config PAGE_SIZE_16KB
1282 depends on !CPU_R3000 && !CPU_TX39XX
1284 Using 16kB page size will result in higher performance kernel at
1285 the price of higher memory consumption. This option is available on
1286 all non-R3000 family processors. Note that you will need a suitable
1287 Linux distribution to support this.
1289 config PAGE_SIZE_64KB
1291 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1293 Using 64kB page size will result in higher performance kernel at
1294 the price of higher memory consumption. This option is available on
1295 all non-R3000 family processor. Not that at the time of this
1296 writing this option is still high experimental.
1303 config IP22_CPU_SCACHE
1308 # Support for a MIPS32 / MIPS64 style S-caches
1310 config MIPS_CPU_SCACHE
1314 config R5000_CPU_SCACHE
1318 config RM7000_CPU_SCACHE
1322 config SIBYTE_DMA_PAGEOPS
1323 bool "Use DMA to clear/copy pages"
1326 Instead of using the CPU to zero and copy pages, use a Data Mover
1327 channel. These DMA channels are otherwise unused by the standard
1328 SiByte Linux port. Seems to give a small performance benefit.
1330 config CPU_HAS_PREFETCH
1334 prompt "MIPS MT options"
1336 config MIPS_MT_DISABLED
1337 bool "Disable multithreading support."
1339 Use this option if your workload can't take advantage of
1340 MIPS hardware multithreading support. On systems that don't have
1341 the option of an MT-enabled processor this option will be the only
1342 option in this menu.
1345 bool "Use 1 TC on each available VPE for SMP"
1346 depends on SYS_SUPPORTS_MULTITHREADING
1347 select CPU_MIPSR2_IRQ_VI
1348 select CPU_MIPSR2_IRQ_EI
1349 select CPU_MIPSR2_SRS
1351 select NR_CPUS_DEFAULT_2
1353 select SYS_SUPPORTS_SMP
1355 This is a kernel model which is also known a VSMP or lately
1356 has been marketesed into SMVP.
1359 bool "SMTC: Use all TCs on all VPEs for SMP"
1360 depends on CPU_MIPS32_R2
1361 #depends on CPU_MIPS64_R2 # once there is hardware ...
1362 depends on SYS_SUPPORTS_MULTITHREADING
1363 select CPU_MIPSR2_IRQ_VI
1364 select CPU_MIPSR2_IRQ_EI
1365 select CPU_MIPSR2_SRS
1367 select NR_CPUS_DEFAULT_8
1369 select SYS_SUPPORTS_SMP
1371 This is a kernel model which is known a SMTC or lately has been
1372 marketesed into SMVP.
1379 config SYS_SUPPORTS_MULTITHREADING
1382 config MIPS_MT_FPAFF
1383 bool "Dynamic FPU affinity for FP-intensive threads"
1385 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1387 config MIPS_VPE_LOADER
1388 bool "VPE loader support."
1389 depends on SYS_SUPPORTS_MULTITHREADING
1390 select CPU_MIPSR2_IRQ_VI
1391 select CPU_MIPSR2_IRQ_EI
1392 select CPU_MIPSR2_SRS
1395 Includes a loader for loading an elf relocatable object
1396 onto another VPE and running it.
1398 config MIPS_MT_SMTC_INSTANT_REPLAY
1399 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1400 depends on MIPS_MT_SMTC && !PREEMPT
1403 SMTC pseudo-interrupts between TCs are deferred and queued
1404 if the target TC is interrupt-inhibited (IXMT). In the first
1405 SMTC prototypes, these queued IPIs were serviced on return
1406 to user mode, or on entry into the kernel idle loop. The
1407 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1408 processing, which adds runtime overhead (hence the option to turn
1409 it off), but ensures that IPIs are handled promptly even under
1410 heavy I/O interrupt load.
1412 config MIPS_MT_SMTC_IM_BACKSTOP
1413 bool "Use per-TC register bits as backstop for inhibited IM bits"
1414 depends on MIPS_MT_SMTC
1417 To support multiple TC microthreads acting as "CPUs" within
1418 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1419 during interrupt handling. To support legacy drivers and interrupt
1420 controller management code, SMTC has a "backstop" to track and
1421 if necessary restore the interrupt mask. This has some performance
1422 impact on interrupt service overhead. Disable it only if you know
1425 config MIPS_MT_SMTC_IRQAFF
1426 bool "Support IRQ affinity API"
1427 depends on MIPS_MT_SMTC
1430 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1431 for SMTC Linux kernel. Requires platform support, of which
1432 an example can be found in the MIPS kernel i8259 and Malta
1433 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1434 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1435 interrupt dispatch, and should be used only if you know what
1438 config MIPS_VPE_LOADER_TOM
1439 bool "Load VPE program into memory hidden from linux"
1440 depends on MIPS_VPE_LOADER
1443 The loader can use memory that is present but has been hidden from
1444 Linux using the kernel command line option "mem=xxMB". It's up to
1445 you to ensure the amount you put in the option and the space your
1446 program requires is less or equal to the amount physically present.
1448 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1449 config MIPS_VPE_APSP_API
1450 bool "Enable support for AP/SP API (RTLX)"
1451 depends on MIPS_VPE_LOADER
1454 config MIPS_APSP_KSPD
1456 depends on MIPS_VPE_APSP_API
1459 KSPD is a kernel daemon that accepts syscall requests from the SP
1460 side, actions them and returns the results. It also handles the
1461 "exit" syscall notifying other kernel modules the SP program is
1462 exiting. You probably want to say yes here.
1464 config SB1_PASS_1_WORKAROUNDS
1466 depends on CPU_SB1_PASS_1
1469 config SB1_PASS_2_WORKAROUNDS
1471 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1474 config SB1_PASS_2_1_WORKAROUNDS
1476 depends on CPU_SB1 && CPU_SB1_PASS_2
1479 config 64BIT_PHYS_ADDR
1485 config CPU_HAS_SMARTMIPS
1486 depends on SYS_SUPPORTS_SMARTMIPS
1487 bool "Support for the SmartMIPS ASE"
1489 SmartMIPS is a extension of the MIPS32 architecture aimed at
1490 increased security at both hardware and software level for
1491 smartcards. Enabling this option will allow proper use of the
1492 SmartMIPS instructions by Linux applications. However a kernel with
1493 this option will not work on a MIPS core without SmartMIPS core. If
1494 you don't know you probably don't have SmartMIPS and should say N
1500 config 64BIT_CONTEXT
1501 bool "Save 64bit integer registers"
1502 depends on 32BIT && CPU_LOONGSON2
1504 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1505 registers can still be accessed as 64bit, mainly for multimedia
1506 instructions. We must have all 64bit save/restored to make sure
1507 those instructions to get correct result.
1510 # Vectored interrupt mode is an R2 feature
1512 config CPU_MIPSR2_IRQ_VI
1516 # Extended interrupt mode is an R2 feature
1518 config CPU_MIPSR2_IRQ_EI
1522 # Shadow registers are an R2 feature
1524 config CPU_MIPSR2_SRS
1529 depends on !CPU_R3000
1533 # Use the generic interrupt handling code in kernel/irq/:
1535 config GENERIC_HARDIRQS
1539 config GENERIC_IRQ_PROBE
1547 # - Highmem only makes sense for the 32-bit kernel.
1548 # - The current highmem code will only work properly on physically indexed
1549 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1550 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1551 # moment we protect the user and offer the highmem option only on machines
1552 # where it's known to be safe. This will not offer highmem on a few systems
1553 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1554 # indexed CPUs but we're playing safe.
1555 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1556 # know they might have memory configurations that could make use of highmem
1560 bool "High Memory Support"
1561 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1563 config CPU_SUPPORTS_HIGHMEM
1566 config SYS_SUPPORTS_HIGHMEM
1569 config SYS_SUPPORTS_SMARTMIPS
1572 config ARCH_FLATMEM_ENABLE
1576 config ARCH_DISCONTIGMEM_ENABLE
1578 default y if SGI_IP27
1580 Say Y to support efficient handling of discontiguous physical memory,
1581 for architectures which are either NUMA (Non-Uniform Memory Access)
1582 or have huge holes in the physical address space for other reasons.
1583 See <file:Documentation/vm/numa> for more.
1585 config ARCH_SPARSEMEM_ENABLE
1587 select SPARSEMEM_STATIC
1591 depends on SYS_SUPPORTS_NUMA
1593 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1594 Access). This option improves performance on systems with more
1595 than two nodes; on two node systems it is generally better to
1596 leave it disabled; on single node systems disable this option
1599 config SYS_SUPPORTS_NUMA
1605 depends on NEED_MULTIPLE_NODES
1610 bool "Multi-Processing support"
1611 depends on SYS_SUPPORTS_SMP
1614 This enables support for systems with more than one CPU. If you have
1615 a system with only one CPU, like most personal computers, say N. If
1616 you have a system with more than one CPU, say Y.
1618 If you say N here, the kernel will run on single and multiprocessor
1619 machines, but will use only one CPU of a multiprocessor machine. If
1620 you say Y here, the kernel will run on many, but not all,
1621 singleprocessor machines. On a singleprocessor machine, the kernel
1622 will run faster if you say N here.
1624 People using multiprocessor machines who say Y here should also say
1625 Y to "Enhanced Real Time Clock Support", below.
1627 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1628 available at <http://www.tldp.org/docs.html#howto>.
1630 If you don't know what to do here, say N.
1632 config SYS_SUPPORTS_SMP
1635 config NR_CPUS_DEFAULT_1
1638 config NR_CPUS_DEFAULT_2
1641 config NR_CPUS_DEFAULT_4
1644 config NR_CPUS_DEFAULT_8
1647 config NR_CPUS_DEFAULT_16
1650 config NR_CPUS_DEFAULT_32
1653 config NR_CPUS_DEFAULT_64
1657 int "Maximum number of CPUs (2-64)"
1658 range 1 64 if NR_CPUS_DEFAULT_1
1660 default "1" if NR_CPUS_DEFAULT_1
1661 default "2" if NR_CPUS_DEFAULT_2
1662 default "4" if NR_CPUS_DEFAULT_4
1663 default "8" if NR_CPUS_DEFAULT_8
1664 default "16" if NR_CPUS_DEFAULT_16
1665 default "32" if NR_CPUS_DEFAULT_32
1666 default "64" if NR_CPUS_DEFAULT_64
1668 This allows you to specify the maximum number of CPUs which this
1669 kernel will support. The maximum supported value is 32 for 32-bit
1670 kernel and 64 for 64-bit kernels; the minimum value which makes
1671 sense is 1 for Qemu (useful only for kernel debugging purposes)
1672 and 2 for all others.
1674 This is purely to save memory - each supported CPU adds
1675 approximately eight kilobytes to the kernel image. For best
1676 performance should round up your number of processors to the next
1680 # Timer Interrupt Frequency Configuration
1684 prompt "Timer frequency"
1687 Allows the configuration of the timer frequency.
1690 bool "48 HZ" if SYS_SUPPORTS_48HZ
1693 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1696 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1699 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1702 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1705 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1708 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1712 config SYS_SUPPORTS_48HZ
1715 config SYS_SUPPORTS_100HZ
1718 config SYS_SUPPORTS_128HZ
1721 config SYS_SUPPORTS_250HZ
1724 config SYS_SUPPORTS_256HZ
1727 config SYS_SUPPORTS_1000HZ
1730 config SYS_SUPPORTS_1024HZ
1733 config SYS_SUPPORTS_ARBIT_HZ
1735 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1736 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1737 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1738 !SYS_SUPPORTS_1024HZ
1743 default 100 if HZ_100
1744 default 128 if HZ_128
1745 default 250 if HZ_250
1746 default 256 if HZ_256
1747 default 1000 if HZ_1000
1748 default 1024 if HZ_1024
1750 source "kernel/Kconfig.preempt"
1752 config MIPS_INSANE_LARGE
1753 bool "Support for large 64-bit configurations"
1754 depends on CPU_R10000 && 64BIT
1756 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1757 previous 64-bit processors which only supported 40 bit / 1TB. If you
1758 need processes of more than 1TB virtual address space, say Y here.
1759 This will result in additional memory usage, so it is not
1760 recommended for normal users.
1763 bool "Kexec system call (EXPERIMENTAL)"
1764 depends on EXPERIMENTAL
1766 kexec is a system call that implements the ability to shutdown your
1767 current kernel, and to start another kernel. It is like a reboot
1768 but it is independent of the system firmware. And like a reboot
1769 you can start any kernel with it, not just Linux.
1771 The name comes from the similiarity to the exec system call.
1773 It is an ongoing process to be certain the hardware in a machine
1774 is properly shutdown, so do not be surprised if this code does not
1775 initially work for you. It may help to enable device hotplugging
1776 support. As of this writing the exact hardware interface is
1777 strongly in flux, so no good recommendation can be made.
1780 bool "Enable seccomp to safely compute untrusted bytecode"
1784 This kernel feature is useful for number crunching applications
1785 that may need to compute untrusted bytecode during their
1786 execution. By using pipes or other transports made available to
1787 the process as file descriptors supporting the read/write
1788 syscalls, it's possible to isolate those applications in
1789 their own address space using seccomp. Once seccomp is
1790 enabled via /proc/<pid>/seccomp, it cannot be disabled
1791 and the task is only allowed to execute a few safe syscalls
1792 defined by each seccomp mode.
1794 If unsure, say Y. Only embedded should say N here.
1798 config RWSEM_GENERIC_SPINLOCK
1802 config LOCKDEP_SUPPORT
1806 config STACKTRACE_SUPPORT
1810 source "init/Kconfig"
1812 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1820 bool "Support for PCI controller"
1821 depends on HW_HAS_PCI
1824 Find out whether you have a PCI motherboard. PCI is the name of a
1825 bus system, i.e. the way the CPU talks to the other stuff inside
1826 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1829 The PCI-HOWTO, available from
1830 <http://www.tldp.org/docs.html#howto>, contains valuable
1831 information about which PCI hardware does work under Linux and which
1837 source "drivers/pci/Kconfig"
1840 # ISA support is now enabled via select. Too many systems still have the one
1841 # or other ISA chip on the board that users don't know about so don't expect
1842 # users to choose the right thing ...
1849 depends on HW_HAS_EISA
1851 select GENERIC_ISA_DMA
1853 The Extended Industry Standard Architecture (EISA) bus was
1854 developed as an open alternative to the IBM MicroChannel bus.
1856 The EISA bus provided some of the features of the IBM MicroChannel
1857 bus while maintaining backward compatibility with cards made for
1858 the older ISA bus. The EISA bus saw limited use between 1988 and
1859 1995 when it was made obsolete by the PCI bus.
1861 Say Y here if you are building a kernel for an EISA-based machine.
1865 source "drivers/eisa/Kconfig"
1868 bool "TURBOchannel support"
1869 depends on MACH_DECSTATION
1871 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1872 processors. Documentation on writing device drivers for TurboChannel
1874 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1877 # bool "Access.Bus support"
1887 source "drivers/pcmcia/Kconfig"
1889 source "drivers/pci/hotplug/Kconfig"
1893 menu "Executable file formats"
1895 source "fs/Kconfig.binfmt"
1901 bool "Include IRIX binary compatibility"
1902 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1904 config MIPS32_COMPAT
1905 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1908 Select this option if you want Linux/MIPS 32-bit binary
1909 compatibility. Since all software available for Linux/MIPS is
1910 currently 32-bit you should say Y here.
1914 depends on MIPS32_COMPAT
1917 config SYSVIPC_COMPAT
1919 depends on COMPAT && SYSVIPC
1923 bool "Kernel support for o32 binaries"
1924 depends on MIPS32_COMPAT
1926 Select this option if you want to run o32 binaries. These are pure
1927 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1928 existing binaries are in this format.
1933 bool "Kernel support for n32 binaries"
1934 depends on MIPS32_COMPAT
1936 Select this option if you want to run n32 binaries. These are
1937 64-bit binaries using 32-bit quantities for addressing and certain
1938 data that would normally be 64-bit. They are used in special
1945 default y if MIPS32_O32 || MIPS32_N32
1949 menu "Power management options"
1951 source "kernel/power/Kconfig"
1955 source "net/Kconfig"
1957 source "drivers/Kconfig"
1961 source "arch/mips/oprofile/Kconfig"
1963 source "arch/mips/Kconfig.debug"
1965 source "security/Kconfig"
1967 source "crypto/Kconfig"
1969 source "lib/Kconfig"