4 # Horrible source of confusion. Die, die, die ...
8 mainmenu "Linux/MIPS Kernel Configuration"
10 menu "Machine selection"
20 bool "Alchemy processor based machines"
23 bool "Basler eXcite smart camera"
30 select SYS_HAS_CPU_RM9000
31 select SYS_SUPPORTS_32BIT_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.
49 bool "BCM47XX based boards"
50 select DMA_NONCOHERENT
53 select SYS_HAS_CPU_MIPS32_R1
54 select SYS_SUPPORTS_32BIT_KERNEL
55 select SYS_SUPPORTS_LITTLE_ENDIAN
57 select SSB_DRIVER_MIPS
59 select SYS_HAS_EARLY_PRINTK
62 Support for BCM47XX based boards
66 select DMA_NONCOHERENT
71 select PCI_GT64XXX_PCI0
72 select SYS_HAS_CPU_NEVADA
73 select SYS_HAS_EARLY_PRINTK
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
76 select SYS_SUPPORTS_LITTLE_ENDIAN
77 select GENERIC_HARDIRQS_NO__DO_IRQ
79 config MACH_DECSTATION
82 select DMA_NONCOHERENT
85 select SYS_HAS_CPU_R3000
86 select SYS_HAS_CPU_R4X00
87 select SYS_SUPPORTS_32BIT_KERNEL
88 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
89 select SYS_SUPPORTS_LITTLE_ENDIAN
90 select SYS_SUPPORTS_128HZ
91 select SYS_SUPPORTS_256HZ
92 select SYS_SUPPORTS_1024HZ
94 This enables support for DEC's MIPS based workstations. For details
95 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
96 DECstation porting pages on <http://decstation.unix-ag.org/>.
98 If you have one of the following DECstation Models you definitely
99 want to choose R4xx0 for the CPU Type:
106 otherwise choose R3000.
109 bool "Jazz family of machines"
112 select ARCH_MAY_HAVE_PC_FDC
113 select GENERIC_ISA_DMA
118 select SYS_HAS_CPU_R4X00
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
121 select SYS_SUPPORTS_100HZ
122 select GENERIC_HARDIRQS_NO__DO_IRQ
124 This a family of machines based on the MIPS R4030 chipset which was
125 used by several vendors to build RISC/os and Windows NT workstations.
126 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
127 Olivetti M700-10 workstations.
130 bool "LASAT Networks platforms"
131 select DMA_NONCOHERENT
132 select SYS_HAS_EARLY_PRINTK
134 select PCI_GT64XXX_PCI0
136 select R5000_CPU_SCACHE
137 select SYS_HAS_CPU_R5000
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
140 select SYS_SUPPORTS_LITTLE_ENDIAN
141 select GENERIC_HARDIRQS_NO__DO_IRQ
144 bool "Lemote Fulong mini-PC"
145 select ARCH_SPARSEMEM_ENABLE
146 select SYS_HAS_CPU_LOONGSON2
147 select DMA_NONCOHERENT
150 select HAVE_STD_PC_SERIAL_PORT
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_64BIT_KERNEL
157 select SYS_SUPPORTS_LITTLE_ENDIAN
158 select SYS_SUPPORTS_HIGHMEM
159 select SYS_HAS_EARLY_PRINTK
160 select GENERIC_HARDIRQS_NO__DO_IRQ
161 select GENERIC_ISA_DMA_SUPPORT_BROKEN
164 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
168 bool "MIPS Atlas board"
170 select DMA_NONCOHERENT
171 select SYS_HAS_EARLY_PRINTK
174 select MIPS_BOARDS_GEN
176 select PCI_GT64XXX_PCI0
178 select RM7000_CPU_SCACHE
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_HAS_CPU_MIPS32_R2
182 select SYS_HAS_CPU_MIPS64_R1
183 select SYS_HAS_CPU_NEVADA
184 select SYS_HAS_CPU_RM7000
185 select SYS_SUPPORTS_32BIT_KERNEL
186 select SYS_SUPPORTS_64BIT_KERNEL
187 select SYS_SUPPORTS_BIG_ENDIAN
188 select SYS_SUPPORTS_LITTLE_ENDIAN
189 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
190 select SYS_SUPPORTS_SMARTMIPS
191 select GENERIC_HARDIRQS_NO__DO_IRQ
193 This enables support for the MIPS Technologies Atlas evaluation
197 bool "MIPS Malta board"
198 select ARCH_MAY_HAVE_PC_FDC
200 select DMA_NONCOHERENT
201 select GENERIC_ISA_DMA
205 select MIPS_BOARDS_GEN
207 select MIPS_CPU_SCACHE
208 select PCI_GT64XXX_PCI0
211 select SYS_HAS_CPU_MIPS32_R1
212 select SYS_HAS_CPU_MIPS32_R2
213 select SYS_HAS_CPU_MIPS64_R1
214 select SYS_HAS_CPU_NEVADA
215 select SYS_HAS_CPU_RM7000
216 select SYS_HAS_EARLY_PRINTK
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_64BIT_KERNEL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_LITTLE_ENDIAN
221 select SYS_SUPPORTS_MULTITHREADING
222 select SYS_SUPPORTS_SMARTMIPS
224 This enables support for the MIPS Technologies Malta evaluation
228 bool "MIPS SEAD board"
230 select DMA_NONCOHERENT
231 select SYS_HAS_EARLY_PRINTK
232 select MIPS_BOARDS_GEN
233 select SYS_HAS_CPU_MIPS32_R1
234 select SYS_HAS_CPU_MIPS32_R2
235 select SYS_HAS_CPU_MIPS64_R1
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
238 select SYS_SUPPORTS_BIG_ENDIAN
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select SYS_SUPPORTS_SMARTMIPS
242 This enables support for the MIPS Technologies SEAD evaluation
246 bool 'MIPS simulator (MIPSsim)'
247 select DMA_NONCOHERENT
248 select SYS_HAS_EARLY_PRINTK
251 select SYS_HAS_CPU_MIPS32_R1
252 select SYS_HAS_CPU_MIPS32_R2
253 select SYS_HAS_EARLY_PRINTK
254 select SYS_SUPPORTS_32BIT_KERNEL
255 select SYS_SUPPORTS_BIG_ENDIAN
256 select SYS_SUPPORTS_MULTITHREADING
257 select SYS_SUPPORTS_LITTLE_ENDIAN
259 This option enables support for MIPS Technologies MIPSsim software
263 bool "NEC EMMA2RH Mark-eins"
264 select DMA_NONCOHERENT
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_SUPPORTS_LITTLE_ENDIAN
271 select SYS_HAS_CPU_R5000
273 This enables support for the R5432-based NEC Mark-eins
274 boards with R5500 CPU.
277 bool "NEC VR4100 series based machines"
278 select SYS_HAS_CPU_VR41XX
279 select GENERIC_HARDIRQS_NO__DO_IRQ
282 bool "Philips PNX8550 based JBS board"
284 select SYS_SUPPORTS_LITTLE_ENDIAN
286 config PNX8550_STB810
287 bool "Philips PNX8550 based STB810 board"
289 select SYS_SUPPORTS_LITTLE_ENDIAN
292 bool "PMC-Sierra MSP chipsets"
293 depends on EXPERIMENTAL
294 select DMA_NONCOHERENT
296 select NO_EXCEPT_FILL
298 select SYS_HAS_CPU_MIPS32_R1
299 select SYS_HAS_CPU_MIPS32_R2
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_SUPPORTS_KGDB
305 select SERIAL_8250_CONSOLE
307 This adds support for the PMC-Sierra family of Multi-Service
308 Processor System-On-A-Chips. These parts include a number
309 of integrated peripherals, interfaces and DSPs in addition to
310 a variety of MIPS cores.
313 bool "PMC-Sierra Yosemite eval board"
320 select SYS_HAS_CPU_RM9000
321 select SYS_HAS_EARLY_PRINTK
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_64BIT_KERNEL
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select SYS_SUPPORTS_HIGHMEM
326 select SYS_SUPPORTS_KGDB
327 select SYS_SUPPORTS_SMP
329 Yosemite is an evaluation board for the RM9000x2 processor
330 manufactured by PMC-Sierra.
335 select GENERIC_ISA_DMA
336 select HAVE_STD_PC_SERIAL_PORT
342 select SYS_HAS_CPU_MIPS32_R1
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_BIG_ENDIAN
345 select SYS_SUPPORTS_LITTLE_ENDIAN
346 select ARCH_SPARSEMEM_ENABLE
347 select GENERIC_HARDIRQS_NO__DO_IRQ
348 select NR_CPUS_DEFAULT_1
349 select SYS_SUPPORTS_SMP
351 Qemu is a software emulator which among other architectures also
352 can simulate a MIPS32 4Kc system. This patch adds support for the
353 system architecture that currently is being simulated by Qemu. It
354 will eventually be removed again when Qemu has the capability to
355 simulate actual MIPS hardware platforms. More information on Qemu
356 can be found at http://www.linux-mips.org/wiki/Qemu.
359 bool "SGI IP22 (Indy/Indigo2)"
363 select DMA_NONCOHERENT
365 select IP22_CPU_SCACHE
367 select GENERIC_ISA_DMA_SUPPORT_BROKEN
369 select SYS_HAS_CPU_R4X00
370 select SYS_HAS_CPU_R5000
371 select SYS_HAS_EARLY_PRINTK
372 select SYS_SUPPORTS_32BIT_KERNEL
373 select SYS_SUPPORTS_64BIT_KERNEL
374 select SYS_SUPPORTS_BIG_ENDIAN
376 This are the SGI Indy, Challenge S and Indigo2, as well as certain
377 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
378 that runs on these, say Y here.
381 bool "SGI IP27 (Origin200/2000)"
386 select SYS_HAS_EARLY_PRINTK
388 select NR_CPUS_DEFAULT_64
389 select SYS_HAS_CPU_R10000
390 select SYS_SUPPORTS_64BIT_KERNEL
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_KGDB
393 select SYS_SUPPORTS_NUMA
394 select SYS_SUPPORTS_SMP
395 select GENERIC_HARDIRQS_NO__DO_IRQ
397 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
398 workstations. To compile a Linux kernel that runs on these, say Y
406 select DMA_NONCOHERENT
408 select R5000_CPU_SCACHE
409 select RM7000_CPU_SCACHE
410 select SYS_HAS_CPU_R5000
411 select SYS_HAS_CPU_R10000 if BROKEN
412 select SYS_HAS_CPU_RM7000
413 select SYS_HAS_CPU_NEVADA
414 select SYS_SUPPORTS_64BIT_KERNEL
415 select SYS_SUPPORTS_BIG_ENDIAN
417 If you want this kernel to run on SGI O2 workstation, say Y here.
420 bool "Sibyte BCM91120C-CRhine"
421 depends on EXPERIMENTAL
424 select SIBYTE_BCM1120
426 select SYS_HAS_CPU_SB1
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_LITTLE_ENDIAN
431 bool "Sibyte BCM91120x-Carmel"
432 depends on EXPERIMENTAL
435 select SIBYTE_BCM1120
437 select SYS_HAS_CPU_SB1
438 select SYS_SUPPORTS_BIG_ENDIAN
439 select SYS_SUPPORTS_LITTLE_ENDIAN
442 bool "Sibyte BCM91125C-CRhone"
443 depends on EXPERIMENTAL
446 select SIBYTE_BCM1125
448 select SYS_HAS_CPU_SB1
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_HIGHMEM
451 select SYS_SUPPORTS_LITTLE_ENDIAN
454 bool "Sibyte BCM91125E-Rhone"
455 depends on EXPERIMENTAL
458 select SIBYTE_BCM1125H
460 select SYS_HAS_CPU_SB1
461 select SYS_SUPPORTS_BIG_ENDIAN
462 select SYS_SUPPORTS_LITTLE_ENDIAN
465 bool "Sibyte BCM91250A-SWARM"
468 select NR_CPUS_DEFAULT_2
471 select SYS_HAS_CPU_SB1
472 select SYS_SUPPORTS_BIG_ENDIAN
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_KGDB
475 select SYS_SUPPORTS_LITTLE_ENDIAN
477 config SIBYTE_LITTLESUR
478 bool "Sibyte BCM91250C2-LittleSur"
479 depends on EXPERIMENTAL
482 select NR_CPUS_DEFAULT_2
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_HIGHMEM
488 select SYS_SUPPORTS_LITTLE_ENDIAN
490 config SIBYTE_SENTOSA
491 bool "Sibyte BCM91250E-Sentosa"
492 depends on EXPERIMENTAL
495 select NR_CPUS_DEFAULT_2
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
502 config SIBYTE_PTSWARM
503 bool "Sibyte BCM91250PT-PTSWARM"
504 depends on EXPERIMENTAL
507 select NR_CPUS_DEFAULT_2
510 select SYS_HAS_CPU_SB1
511 select SYS_SUPPORTS_BIG_ENDIAN
512 select SYS_SUPPORTS_HIGHMEM
513 select SYS_SUPPORTS_LITTLE_ENDIAN
516 bool "Sibyte BCM91480B-BigSur"
519 select NR_CPUS_DEFAULT_4
520 select SIBYTE_BCM1x80
522 select SYS_HAS_CPU_SB1
523 select SYS_SUPPORTS_BIG_ENDIAN
524 select SYS_SUPPORTS_LITTLE_ENDIAN
527 bool "SNI RM200/300/400"
528 select ARC if CPU_LITTLE_ENDIAN
529 select ARC32 if CPU_LITTLE_ENDIAN
530 select ARCH_MAY_HAVE_PC_FDC
532 select DMA_NONCOHERENT
533 select GENERIC_ISA_DMA
540 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
541 select SYS_HAS_CPU_R4X00
542 select SYS_HAS_CPU_R5000
543 select SYS_HAS_CPU_R10000
544 select R5000_CPU_SCACHE
545 select SYS_HAS_EARLY_PRINTK
546 select SYS_SUPPORTS_32BIT_KERNEL
547 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
548 select SYS_SUPPORTS_BIG_ENDIAN
549 select SYS_SUPPORTS_HIGHMEM
550 select SYS_SUPPORTS_LITTLE_ENDIAN
552 The SNI RM200/300/400 are MIPS-based machines manufactured by
553 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
554 Technology and now in turn merged with Fujitsu. Say Y here to
555 support this machine type.
557 config TOSHIBA_JMR3927
558 bool "Toshiba JMR-TX3927 board"
559 select DMA_NONCOHERENT
564 select SYS_HAS_CPU_TX39XX
565 select SYS_SUPPORTS_32BIT_KERNEL
566 select SYS_SUPPORTS_LITTLE_ENDIAN
567 select SYS_SUPPORTS_BIG_ENDIAN
568 select GENERIC_HARDIRQS_NO__DO_IRQ
570 config TOSHIBA_RBTX4927
571 bool "Toshiba RBTX49[23]7 board"
572 select DMA_NONCOHERENT
573 select HAS_TXX9_SERIAL
577 select I8259 if TOSHIBA_FPCIB0
579 select SYS_HAS_CPU_TX49XX
580 select SYS_SUPPORTS_32BIT_KERNEL
581 select SYS_SUPPORTS_64BIT_KERNEL
582 select SYS_SUPPORTS_LITTLE_ENDIAN
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_KGDB
585 select GENERIC_HARDIRQS_NO__DO_IRQ
587 This Toshiba board is based on the TX4927 processor. Say Y here to
588 support this machine type
590 config TOSHIBA_RBTX4938
591 bool "Toshiba RBTX4938 board"
592 select DMA_NONCOHERENT
593 select HAS_TXX9_SERIAL
598 select SYS_HAS_CPU_TX49XX
599 select SYS_SUPPORTS_32BIT_KERNEL
600 select SYS_SUPPORTS_LITTLE_ENDIAN
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_KGDB
603 select GENERIC_HARDIRQS_NO__DO_IRQ
606 This Toshiba board is based on the TX4938 processor. Say Y here to
607 support this machine type
610 bool "Wind River PPMC board"
613 select DMA_NONCOHERENT
615 select PCI_GT64XXX_PCI0
617 select SYS_HAS_CPU_MIPS32_R1
618 select SYS_HAS_CPU_MIPS32_R2
619 select SYS_HAS_CPU_MIPS64_R1
620 select SYS_HAS_CPU_NEVADA
621 select SYS_HAS_CPU_RM7000
622 select SYS_SUPPORTS_32BIT_KERNEL
623 select SYS_SUPPORTS_64BIT_KERNEL
624 select SYS_SUPPORTS_BIG_ENDIAN
625 select SYS_SUPPORTS_LITTLE_ENDIAN
627 This enables support for the Wind River MIPS32 4KC PPMC evaluation
628 board, which is based on GT64120 bridge chip.
632 source "arch/mips/au1000/Kconfig"
633 source "arch/mips/jazz/Kconfig"
634 source "arch/mips/lasat/Kconfig"
635 source "arch/mips/pmc-sierra/Kconfig"
636 source "arch/mips/sgi-ip27/Kconfig"
637 source "arch/mips/sibyte/Kconfig"
638 source "arch/mips/tx4927/Kconfig"
639 source "arch/mips/tx4938/Kconfig"
640 source "arch/mips/vr41xx/Kconfig"
644 config RWSEM_GENERIC_SPINLOCK
648 config RWSEM_XCHGADD_ALGORITHM
651 config ARCH_HAS_ILOG2_U32
655 config ARCH_HAS_ILOG2_U64
659 config GENERIC_FIND_NEXT_BIT
663 config GENERIC_HWEIGHT
667 config GENERIC_CALIBRATE_DELAY
671 config GENERIC_CLOCKEVENTS
679 config GENERIC_CMOS_UPDATE
683 config SCHED_NO_NO_OMIT_FRAME_POINTER
687 config GENERIC_HARDIRQS_NO__DO_IRQ
692 # Select some configuration options automatically based on user selections.
697 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
756 config MIPS_DISABLE_OBSOLETE_IDE
762 config GENERIC_ISA_DMA
764 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
766 config GENERIC_ISA_DMA_SUPPORT_BROKEN
768 select GENERIC_ISA_DMA
774 # Endianess selection. Sufficiently obscure so many users don't know what to
775 # answer,so we try hard to limit the available choices. Also the use of a
776 # choice statement should be more obvious to the user.
779 prompt "Endianess selection"
781 Some MIPS machines can be configured for either little or big endian
782 byte order. These modes require different kernels and a different
783 Linux distribution. In general there is one preferred byteorder for a
784 particular system but some systems are just as commonly used in the
785 one or the other endianness.
787 config CPU_BIG_ENDIAN
789 depends on SYS_SUPPORTS_BIG_ENDIAN
791 config CPU_LITTLE_ENDIAN
793 depends on SYS_SUPPORTS_LITTLE_ENDIAN
798 config SYS_SUPPORTS_APM_EMULATION
801 config SYS_SUPPORTS_BIG_ENDIAN
804 config SYS_SUPPORTS_LITTLE_ENDIAN
828 config MIPS_BOARDS_GEN
831 config PCI_GT64XXX_PCI0
834 config NO_EXCEPT_FILL
839 select HAS_TXX9_SERIAL
851 select DMA_NONCOHERENT
853 select SYS_HAS_CPU_MIPS32_R1
854 select SYS_HAS_EARLY_PRINTK
855 select SYS_SUPPORTS_32BIT_KERNEL
856 select GENERIC_HARDIRQS_NO__DO_IRQ
857 select SYS_SUPPORTS_KGDB
877 config MIPS_L1_CACHE_SHIFT
879 default "4" if MACH_DECSTATION
880 default "7" if SGI_IP27 || SNI_RM
881 default "4" if PMC_MSP4200_EVAL
884 config HAVE_STD_PC_SERIAL_PORT
888 bool "ARC console support"
889 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
893 depends on MACH_JAZZ || SNI_RM || SGI_IP32
898 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
909 source "kernel/time/Kconfig"
917 depends on SYS_HAS_CPU_LOONGSON2
918 select CPU_SUPPORTS_32BIT_KERNEL
919 select CPU_SUPPORTS_64BIT_KERNEL
920 select CPU_SUPPORTS_HIGHMEM
922 The Loongson 2E processor implements the MIPS III instruction set
923 with many extensions.
926 bool "MIPS32 Release 1"
927 depends on SYS_HAS_CPU_MIPS32_R1
929 select CPU_HAS_PREFETCH
930 select CPU_SUPPORTS_32BIT_KERNEL
931 select CPU_SUPPORTS_HIGHMEM
933 Choose this option to build a kernel for release 1 or later of the
934 MIPS32 architecture. Most modern embedded systems with a 32-bit
935 MIPS processor are based on a MIPS32 processor. If you know the
936 specific type of processor in your system, choose those that one
937 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
938 Release 2 of the MIPS32 architecture is available since several
939 years so chances are you even have a MIPS32 Release 2 processor
940 in which case you should choose CPU_MIPS32_R2 instead for better
944 bool "MIPS32 Release 2"
945 depends on SYS_HAS_CPU_MIPS32_R2
947 select CPU_HAS_PREFETCH
948 select CPU_SUPPORTS_32BIT_KERNEL
949 select CPU_SUPPORTS_HIGHMEM
951 Choose this option to build a kernel for release 2 or later of the
952 MIPS32 architecture. Most modern embedded systems with a 32-bit
953 MIPS processor are based on a MIPS32 processor. If you know the
954 specific type of processor in your system, choose those that one
955 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
958 bool "MIPS64 Release 1"
959 depends on SYS_HAS_CPU_MIPS64_R1
961 select CPU_HAS_PREFETCH
962 select CPU_SUPPORTS_32BIT_KERNEL
963 select CPU_SUPPORTS_64BIT_KERNEL
964 select CPU_SUPPORTS_HIGHMEM
966 Choose this option to build a kernel for release 1 or later of the
967 MIPS64 architecture. Many modern embedded systems with a 64-bit
968 MIPS processor are based on a MIPS64 processor. If you know the
969 specific type of processor in your system, choose those that one
970 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
971 Release 2 of the MIPS64 architecture is available since several
972 years so chances are you even have a MIPS64 Release 2 processor
973 in which case you should choose CPU_MIPS64_R2 instead for better
977 bool "MIPS64 Release 2"
978 depends on SYS_HAS_CPU_MIPS64_R2
980 select CPU_HAS_PREFETCH
981 select CPU_SUPPORTS_32BIT_KERNEL
982 select CPU_SUPPORTS_64BIT_KERNEL
983 select CPU_SUPPORTS_HIGHMEM
985 Choose this option to build a kernel for release 2 or later of the
986 MIPS64 architecture. Many modern embedded systems with a 64-bit
987 MIPS processor are based on a MIPS64 processor. If you know the
988 specific type of processor in your system, choose those that one
989 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
993 depends on SYS_HAS_CPU_R3000
995 select CPU_SUPPORTS_32BIT_KERNEL
996 select CPU_SUPPORTS_HIGHMEM
998 Please make sure to pick the right CPU type. Linux/MIPS is not
999 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1000 *not* work on R4000 machines and vice versa. However, since most
1001 of the supported machines have an R4000 (or similar) CPU, R4x00
1002 might be a safe bet. If the resulting kernel does not work,
1003 try to recompile with R3000.
1007 depends on SYS_HAS_CPU_TX39XX
1008 select CPU_SUPPORTS_32BIT_KERNEL
1012 depends on SYS_HAS_CPU_VR41XX
1013 select CPU_SUPPORTS_32BIT_KERNEL
1014 select CPU_SUPPORTS_64BIT_KERNEL
1016 The options selects support for the NEC VR4100 series of processors.
1017 Only choose this option if you have one of these processors as a
1018 kernel built with this option will not run on any other type of
1019 processor or vice versa.
1023 depends on SYS_HAS_CPU_R4300
1025 select CPU_SUPPORTS_32BIT_KERNEL
1026 select CPU_SUPPORTS_64BIT_KERNEL
1028 MIPS Technologies R4300-series processors.
1032 depends on SYS_HAS_CPU_R4X00
1034 select CPU_SUPPORTS_32BIT_KERNEL
1035 select CPU_SUPPORTS_64BIT_KERNEL
1037 MIPS Technologies R4000-series processors other than 4300, including
1038 the R4000, R4400, R4600, and 4700.
1042 depends on SYS_HAS_CPU_TX49XX
1044 select CPU_HAS_PREFETCH
1045 select CPU_SUPPORTS_32BIT_KERNEL
1046 select CPU_SUPPORTS_64BIT_KERNEL
1050 depends on SYS_HAS_CPU_R5000
1052 select CPU_SUPPORTS_32BIT_KERNEL
1053 select CPU_SUPPORTS_64BIT_KERNEL
1055 MIPS Technologies R5000-series processors other than the Nevada.
1059 depends on SYS_HAS_CPU_R5432
1061 select CPU_SUPPORTS_32BIT_KERNEL
1062 select CPU_SUPPORTS_64BIT_KERNEL
1066 depends on EXPERIMENTAL
1068 depends on SYS_HAS_CPU_R6000
1069 select CPU_SUPPORTS_32BIT_KERNEL
1071 MIPS Technologies R6000 and R6000A series processors. Note these
1072 processors are extremely rare and the support for them is incomplete.
1076 depends on SYS_HAS_CPU_NEVADA
1078 select CPU_SUPPORTS_32BIT_KERNEL
1079 select CPU_SUPPORTS_64BIT_KERNEL
1081 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1085 depends on EXPERIMENTAL
1086 depends on SYS_HAS_CPU_R8000
1088 select CPU_HAS_PREFETCH
1089 select CPU_SUPPORTS_64BIT_KERNEL
1091 MIPS Technologies R8000 processors. Note these processors are
1092 uncommon and the support for them is incomplete.
1096 depends on SYS_HAS_CPU_R10000
1098 select CPU_HAS_PREFETCH
1099 select CPU_SUPPORTS_32BIT_KERNEL
1100 select CPU_SUPPORTS_64BIT_KERNEL
1101 select CPU_SUPPORTS_HIGHMEM
1103 MIPS Technologies R10000-series processors.
1107 depends on SYS_HAS_CPU_RM7000
1109 select CPU_HAS_PREFETCH
1110 select CPU_SUPPORTS_32BIT_KERNEL
1111 select CPU_SUPPORTS_64BIT_KERNEL
1112 select CPU_SUPPORTS_HIGHMEM
1116 depends on SYS_HAS_CPU_RM9000
1118 select CPU_HAS_PREFETCH
1119 select CPU_SUPPORTS_32BIT_KERNEL
1120 select CPU_SUPPORTS_64BIT_KERNEL
1121 select CPU_SUPPORTS_HIGHMEM
1122 select WEAK_ORDERING
1126 depends on SYS_HAS_CPU_SB1
1128 select CPU_SUPPORTS_32BIT_KERNEL
1129 select CPU_SUPPORTS_64BIT_KERNEL
1130 select CPU_SUPPORTS_HIGHMEM
1131 select WEAK_ORDERING
1135 config SYS_HAS_CPU_LOONGSON2
1138 config SYS_HAS_CPU_MIPS32_R1
1141 config SYS_HAS_CPU_MIPS32_R2
1144 config SYS_HAS_CPU_MIPS64_R1
1147 config SYS_HAS_CPU_MIPS64_R2
1150 config SYS_HAS_CPU_R3000
1153 config SYS_HAS_CPU_TX39XX
1156 config SYS_HAS_CPU_VR41XX
1159 config SYS_HAS_CPU_R4300
1162 config SYS_HAS_CPU_R4X00
1165 config SYS_HAS_CPU_TX49XX
1168 config SYS_HAS_CPU_R5000
1171 config SYS_HAS_CPU_R5432
1174 config SYS_HAS_CPU_R6000
1177 config SYS_HAS_CPU_NEVADA
1180 config SYS_HAS_CPU_R8000
1183 config SYS_HAS_CPU_R10000
1186 config SYS_HAS_CPU_RM7000
1189 config SYS_HAS_CPU_RM9000
1192 config SYS_HAS_CPU_SB1
1196 # CPU may reorder R->R, R->W, W->R, W->W
1197 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1199 config WEAK_ORDERING
1203 # CPU may reorder reads and writes beyond LL/SC
1204 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1206 config WEAK_REORDERING_BEYOND_LLSC
1211 # These two indicate any level of the MIPS32 and MIPS64 architecture
1215 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1219 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1222 # These two indicate the revision of the architecture, either Release 1 or Release 2
1226 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1230 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1232 config SYS_SUPPORTS_32BIT_KERNEL
1234 config SYS_SUPPORTS_64BIT_KERNEL
1236 config CPU_SUPPORTS_32BIT_KERNEL
1238 config CPU_SUPPORTS_64BIT_KERNEL
1245 prompt "Kernel code model"
1247 You should only select this option if you have a workload that
1248 actually benefits from 64-bit processing or if your machine has
1249 large memory. You will only be presented a single option in this
1250 menu if your system does not support both 32-bit and 64-bit kernels.
1253 bool "32-bit kernel"
1254 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1257 Select this option if you want to build a 32-bit kernel.
1259 bool "64-bit kernel"
1260 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1262 Select this option if you want to build a 64-bit kernel.
1267 prompt "Kernel page size"
1268 default PAGE_SIZE_4KB
1270 config PAGE_SIZE_4KB
1273 This option select the standard 4kB Linux page size. On some
1274 R3000-family processors this is the only available page size. Using
1275 4kB page size will minimize memory consumption and is therefore
1276 recommended for low memory systems.
1278 config PAGE_SIZE_8KB
1280 depends on EXPERIMENTAL && CPU_R8000
1282 Using 8kB page size will result in higher performance kernel at
1283 the price of higher memory consumption. This option is available
1284 only on the R8000 processor. Not that at the time of this writing
1285 this option is still high experimental; there are also issues with
1286 compatibility of user applications.
1288 config PAGE_SIZE_16KB
1290 depends on !CPU_R3000 && !CPU_TX39XX
1292 Using 16kB page size will result in higher performance kernel at
1293 the price of higher memory consumption. This option is available on
1294 all non-R3000 family processors. Note that you will need a suitable
1295 Linux distribution to support this.
1297 config PAGE_SIZE_64KB
1299 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1301 Using 64kB page size will result in higher performance kernel at
1302 the price of higher memory consumption. This option is available on
1303 all non-R3000 family processor. Not that at the time of this
1304 writing this option is still high experimental.
1311 config IP22_CPU_SCACHE
1316 # Support for a MIPS32 / MIPS64 style S-caches
1318 config MIPS_CPU_SCACHE
1322 config R5000_CPU_SCACHE
1326 config RM7000_CPU_SCACHE
1330 config SIBYTE_DMA_PAGEOPS
1331 bool "Use DMA to clear/copy pages"
1334 Instead of using the CPU to zero and copy pages, use a Data Mover
1335 channel. These DMA channels are otherwise unused by the standard
1336 SiByte Linux port. Seems to give a small performance benefit.
1338 config CPU_HAS_PREFETCH
1342 prompt "MIPS MT options"
1344 config MIPS_MT_DISABLED
1345 bool "Disable multithreading support."
1347 Use this option if your workload can't take advantage of
1348 MIPS hardware multithreading support. On systems that don't have
1349 the option of an MT-enabled processor this option will be the only
1350 option in this menu.
1353 bool "Use 1 TC on each available VPE for SMP"
1354 depends on SYS_SUPPORTS_MULTITHREADING
1355 select CPU_MIPSR2_IRQ_VI
1356 select CPU_MIPSR2_IRQ_EI
1357 select CPU_MIPSR2_SRS
1359 select NR_CPUS_DEFAULT_2
1361 select SYS_SUPPORTS_SMP
1363 This is a kernel model which is also known a VSMP or lately
1364 has been marketesed into SMVP.
1367 bool "SMTC: Use all TCs on all VPEs for SMP"
1368 depends on CPU_MIPS32_R2
1369 #depends on CPU_MIPS64_R2 # once there is hardware ...
1370 depends on SYS_SUPPORTS_MULTITHREADING
1371 select GENERIC_CLOCKEVENTS_BROADCAST
1372 select CPU_MIPSR2_IRQ_VI
1373 select CPU_MIPSR2_IRQ_EI
1374 select CPU_MIPSR2_SRS
1376 select NR_CPUS_DEFAULT_8
1378 select SYS_SUPPORTS_SMP
1380 This is a kernel model which is known a SMTC or lately has been
1381 marketesed into SMVP.
1388 config SYS_SUPPORTS_MULTITHREADING
1391 config MIPS_MT_FPAFF
1392 bool "Dynamic FPU affinity for FP-intensive threads"
1394 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1396 config MIPS_VPE_LOADER
1397 bool "VPE loader support."
1398 depends on SYS_SUPPORTS_MULTITHREADING
1399 select CPU_MIPSR2_IRQ_VI
1400 select CPU_MIPSR2_IRQ_EI
1401 select CPU_MIPSR2_SRS
1404 Includes a loader for loading an elf relocatable object
1405 onto another VPE and running it.
1407 config MIPS_MT_SMTC_INSTANT_REPLAY
1408 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1409 depends on MIPS_MT_SMTC && !PREEMPT
1412 SMTC pseudo-interrupts between TCs are deferred and queued
1413 if the target TC is interrupt-inhibited (IXMT). In the first
1414 SMTC prototypes, these queued IPIs were serviced on return
1415 to user mode, or on entry into the kernel idle loop. The
1416 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1417 processing, which adds runtime overhead (hence the option to turn
1418 it off), but ensures that IPIs are handled promptly even under
1419 heavy I/O interrupt load.
1421 config MIPS_MT_SMTC_IM_BACKSTOP
1422 bool "Use per-TC register bits as backstop for inhibited IM bits"
1423 depends on MIPS_MT_SMTC
1426 To support multiple TC microthreads acting as "CPUs" within
1427 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1428 during interrupt handling. To support legacy drivers and interrupt
1429 controller management code, SMTC has a "backstop" to track and
1430 if necessary restore the interrupt mask. This has some performance
1431 impact on interrupt service overhead. Disable it only if you know
1434 config MIPS_MT_SMTC_IRQAFF
1435 bool "Support IRQ affinity API"
1436 depends on MIPS_MT_SMTC
1439 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1440 for SMTC Linux kernel. Requires platform support, of which
1441 an example can be found in the MIPS kernel i8259 and Malta
1442 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1443 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1444 interrupt dispatch, and should be used only if you know what
1447 config MIPS_VPE_LOADER_TOM
1448 bool "Load VPE program into memory hidden from linux"
1449 depends on MIPS_VPE_LOADER
1452 The loader can use memory that is present but has been hidden from
1453 Linux using the kernel command line option "mem=xxMB". It's up to
1454 you to ensure the amount you put in the option and the space your
1455 program requires is less or equal to the amount physically present.
1457 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1458 config MIPS_VPE_APSP_API
1459 bool "Enable support for AP/SP API (RTLX)"
1460 depends on MIPS_VPE_LOADER
1463 config MIPS_APSP_KSPD
1465 depends on MIPS_VPE_APSP_API
1468 KSPD is a kernel daemon that accepts syscall requests from the SP
1469 side, actions them and returns the results. It also handles the
1470 "exit" syscall notifying other kernel modules the SP program is
1471 exiting. You probably want to say yes here.
1473 config SB1_PASS_1_WORKAROUNDS
1475 depends on CPU_SB1_PASS_1
1478 config SB1_PASS_2_WORKAROUNDS
1480 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1483 config SB1_PASS_2_1_WORKAROUNDS
1485 depends on CPU_SB1 && CPU_SB1_PASS_2
1488 config 64BIT_PHYS_ADDR
1494 config CPU_HAS_SMARTMIPS
1495 depends on SYS_SUPPORTS_SMARTMIPS
1496 bool "Support for the SmartMIPS ASE"
1498 SmartMIPS is a extension of the MIPS32 architecture aimed at
1499 increased security at both hardware and software level for
1500 smartcards. Enabling this option will allow proper use of the
1501 SmartMIPS instructions by Linux applications. However a kernel with
1502 this option will not work on a MIPS core without SmartMIPS core. If
1503 you don't know you probably don't have SmartMIPS and should say N
1509 config 64BIT_CONTEXT
1510 bool "Save 64bit integer registers"
1511 depends on 32BIT && CPU_LOONGSON2
1513 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1514 registers can still be accessed as 64bit, mainly for multimedia
1515 instructions. We must have all 64bit save/restored to make sure
1516 those instructions to get correct result.
1519 # Vectored interrupt mode is an R2 feature
1521 config CPU_MIPSR2_IRQ_VI
1525 # Extended interrupt mode is an R2 feature
1527 config CPU_MIPSR2_IRQ_EI
1531 # Shadow registers are an R2 feature
1533 config CPU_MIPSR2_SRS
1538 depends on !CPU_R3000
1541 config GENERIC_CLOCKEVENTS_BROADCAST
1545 # Use the generic interrupt handling code in kernel/irq/:
1547 config GENERIC_HARDIRQS
1551 config GENERIC_IRQ_PROBE
1559 # - Highmem only makes sense for the 32-bit kernel.
1560 # - The current highmem code will only work properly on physically indexed
1561 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1562 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1563 # moment we protect the user and offer the highmem option only on machines
1564 # where it's known to be safe. This will not offer highmem on a few systems
1565 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1566 # indexed CPUs but we're playing safe.
1567 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1568 # know they might have memory configurations that could make use of highmem
1572 bool "High Memory Support"
1573 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1575 config CPU_SUPPORTS_HIGHMEM
1578 config SYS_SUPPORTS_HIGHMEM
1581 config SYS_SUPPORTS_SMARTMIPS
1584 config ARCH_FLATMEM_ENABLE
1588 config ARCH_DISCONTIGMEM_ENABLE
1590 default y if SGI_IP27
1592 Say Y to support efficient handling of discontiguous physical memory,
1593 for architectures which are either NUMA (Non-Uniform Memory Access)
1594 or have huge holes in the physical address space for other reasons.
1595 See <file:Documentation/vm/numa> for more.
1597 config ARCH_SPARSEMEM_ENABLE
1599 select SPARSEMEM_STATIC
1603 depends on SYS_SUPPORTS_NUMA
1605 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1606 Access). This option improves performance on systems with more
1607 than two nodes; on two node systems it is generally better to
1608 leave it disabled; on single node systems disable this option
1611 config SYS_SUPPORTS_NUMA
1617 depends on NEED_MULTIPLE_NODES
1622 bool "Multi-Processing support"
1623 depends on SYS_SUPPORTS_SMP
1626 This enables support for systems with more than one CPU. If you have
1627 a system with only one CPU, like most personal computers, say N. If
1628 you have a system with more than one CPU, say Y.
1630 If you say N here, the kernel will run on single and multiprocessor
1631 machines, but will use only one CPU of a multiprocessor machine. If
1632 you say Y here, the kernel will run on many, but not all,
1633 singleprocessor machines. On a singleprocessor machine, the kernel
1634 will run faster if you say N here.
1636 People using multiprocessor machines who say Y here should also say
1637 Y to "Enhanced Real Time Clock Support", below.
1639 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1640 available at <http://www.tldp.org/docs.html#howto>.
1642 If you don't know what to do here, say N.
1644 config SYS_SUPPORTS_SMP
1647 config NR_CPUS_DEFAULT_1
1650 config NR_CPUS_DEFAULT_2
1653 config NR_CPUS_DEFAULT_4
1656 config NR_CPUS_DEFAULT_8
1659 config NR_CPUS_DEFAULT_16
1662 config NR_CPUS_DEFAULT_32
1665 config NR_CPUS_DEFAULT_64
1669 int "Maximum number of CPUs (2-64)"
1670 range 1 64 if NR_CPUS_DEFAULT_1
1672 default "1" if NR_CPUS_DEFAULT_1
1673 default "2" if NR_CPUS_DEFAULT_2
1674 default "4" if NR_CPUS_DEFAULT_4
1675 default "8" if NR_CPUS_DEFAULT_8
1676 default "16" if NR_CPUS_DEFAULT_16
1677 default "32" if NR_CPUS_DEFAULT_32
1678 default "64" if NR_CPUS_DEFAULT_64
1680 This allows you to specify the maximum number of CPUs which this
1681 kernel will support. The maximum supported value is 32 for 32-bit
1682 kernel and 64 for 64-bit kernels; the minimum value which makes
1683 sense is 1 for Qemu (useful only for kernel debugging purposes)
1684 and 2 for all others.
1686 This is purely to save memory - each supported CPU adds
1687 approximately eight kilobytes to the kernel image. For best
1688 performance should round up your number of processors to the next
1692 # Timer Interrupt Frequency Configuration
1696 prompt "Timer frequency"
1699 Allows the configuration of the timer frequency.
1702 bool "48 HZ" if SYS_SUPPORTS_48HZ
1705 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1708 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1711 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1714 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1717 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1720 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1724 config SYS_SUPPORTS_48HZ
1727 config SYS_SUPPORTS_100HZ
1730 config SYS_SUPPORTS_128HZ
1733 config SYS_SUPPORTS_250HZ
1736 config SYS_SUPPORTS_256HZ
1739 config SYS_SUPPORTS_1000HZ
1742 config SYS_SUPPORTS_1024HZ
1745 config SYS_SUPPORTS_ARBIT_HZ
1747 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1748 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1749 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1750 !SYS_SUPPORTS_1024HZ
1755 default 100 if HZ_100
1756 default 128 if HZ_128
1757 default 250 if HZ_250
1758 default 256 if HZ_256
1759 default 1000 if HZ_1000
1760 default 1024 if HZ_1024
1762 source "kernel/Kconfig.preempt"
1764 config MIPS_INSANE_LARGE
1765 bool "Support for large 64-bit configurations"
1766 depends on CPU_R10000 && 64BIT
1768 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1769 previous 64-bit processors which only supported 40 bit / 1TB. If you
1770 need processes of more than 1TB virtual address space, say Y here.
1771 This will result in additional memory usage, so it is not
1772 recommended for normal users.
1775 bool "Kexec system call (EXPERIMENTAL)"
1776 depends on EXPERIMENTAL
1778 kexec is a system call that implements the ability to shutdown your
1779 current kernel, and to start another kernel. It is like a reboot
1780 but it is independent of the system firmware. And like a reboot
1781 you can start any kernel with it, not just Linux.
1783 The name comes from the similiarity to the exec system call.
1785 It is an ongoing process to be certain the hardware in a machine
1786 is properly shutdown, so do not be surprised if this code does not
1787 initially work for you. It may help to enable device hotplugging
1788 support. As of this writing the exact hardware interface is
1789 strongly in flux, so no good recommendation can be made.
1792 bool "Enable seccomp to safely compute untrusted bytecode"
1796 This kernel feature is useful for number crunching applications
1797 that may need to compute untrusted bytecode during their
1798 execution. By using pipes or other transports made available to
1799 the process as file descriptors supporting the read/write
1800 syscalls, it's possible to isolate those applications in
1801 their own address space using seccomp. Once seccomp is
1802 enabled via /proc/<pid>/seccomp, it cannot be disabled
1803 and the task is only allowed to execute a few safe syscalls
1804 defined by each seccomp mode.
1806 If unsure, say Y. Only embedded should say N here.
1810 config RWSEM_GENERIC_SPINLOCK
1814 config LOCKDEP_SUPPORT
1818 config STACKTRACE_SUPPORT
1822 source "init/Kconfig"
1824 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1832 bool "Support for PCI controller"
1833 depends on HW_HAS_PCI
1836 Find out whether you have a PCI motherboard. PCI is the name of a
1837 bus system, i.e. the way the CPU talks to the other stuff inside
1838 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1841 The PCI-HOWTO, available from
1842 <http://www.tldp.org/docs.html#howto>, contains valuable
1843 information about which PCI hardware does work under Linux and which
1849 source "drivers/pci/Kconfig"
1852 # ISA support is now enabled via select. Too many systems still have the one
1853 # or other ISA chip on the board that users don't know about so don't expect
1854 # users to choose the right thing ...
1861 depends on HW_HAS_EISA
1863 select GENERIC_ISA_DMA
1865 The Extended Industry Standard Architecture (EISA) bus was
1866 developed as an open alternative to the IBM MicroChannel bus.
1868 The EISA bus provided some of the features of the IBM MicroChannel
1869 bus while maintaining backward compatibility with cards made for
1870 the older ISA bus. The EISA bus saw limited use between 1988 and
1871 1995 when it was made obsolete by the PCI bus.
1873 Say Y here if you are building a kernel for an EISA-based machine.
1877 source "drivers/eisa/Kconfig"
1880 bool "TURBOchannel support"
1881 depends on MACH_DECSTATION
1883 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1884 processors. Documentation on writing device drivers for TurboChannel
1886 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1889 # bool "Access.Bus support"
1899 source "drivers/pcmcia/Kconfig"
1901 source "drivers/pci/hotplug/Kconfig"
1905 menu "Executable file formats"
1907 source "fs/Kconfig.binfmt"
1913 bool "Include IRIX binary compatibility"
1914 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1916 config MIPS32_COMPAT
1917 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1920 Select this option if you want Linux/MIPS 32-bit binary
1921 compatibility. Since all software available for Linux/MIPS is
1922 currently 32-bit you should say Y here.
1926 depends on MIPS32_COMPAT
1929 config SYSVIPC_COMPAT
1931 depends on COMPAT && SYSVIPC
1935 bool "Kernel support for o32 binaries"
1936 depends on MIPS32_COMPAT
1938 Select this option if you want to run o32 binaries. These are pure
1939 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1940 existing binaries are in this format.
1945 bool "Kernel support for n32 binaries"
1946 depends on MIPS32_COMPAT
1948 Select this option if you want to run n32 binaries. These are
1949 64-bit binaries using 32-bit quantities for addressing and certain
1950 data that would normally be 64-bit. They are used in special
1957 default y if MIPS32_O32 || MIPS32_N32
1961 menu "Power management options"
1963 source "kernel/power/Kconfig"
1967 source "net/Kconfig"
1969 source "drivers/Kconfig"
1973 source "arch/mips/oprofile/Kconfig"
1975 source "arch/mips/Kconfig.debug"
1977 source "security/Kconfig"
1979 source "crypto/Kconfig"
1981 source "lib/Kconfig"