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"
31 select SYS_HAS_CPU_RM9000
32 select SYS_SUPPORTS_32BIT_KERNEL
33 select SYS_SUPPORTS_BIG_ENDIAN
34 select SYS_SUPPORTS_KGDB
36 The eXcite is a smart camera platform manufactured by
37 Basler Vision Technologies AG.
39 config BASLER_EXCITE_PROTOTYPE
40 bool "Support for pre-release units"
41 depends on BASLER_EXCITE
44 Pre-series (prototype) units are different from later ones in
45 some ways. Select this option if you have one of these. Please
46 note that a kernel built with this option selected will not be
47 able to run on normal units.
50 bool "BCM47XX based boards"
52 select DMA_NONCOHERENT
55 select SYS_HAS_CPU_MIPS32_R1
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_LITTLE_ENDIAN
59 select SSB_DRIVER_MIPS
61 select SYS_HAS_EARLY_PRINTK
64 Support for BCM47XX based boards
70 select DMA_NONCOHERENT
76 select PCI_GT64XXX_PCI0
77 select SYS_HAS_CPU_NEVADA
78 select SYS_HAS_EARLY_PRINTK
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select GENERIC_HARDIRQS_NO__DO_IRQ
84 config MACH_DECSTATION
88 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_R3000
92 select SYS_HAS_CPU_R4X00
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SYS_SUPPORTS_128HZ
97 select SYS_SUPPORTS_256HZ
98 select SYS_SUPPORTS_1024HZ
100 This enables support for DEC's MIPS based workstations. For details
101 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
102 DECstation porting pages on <http://decstation.unix-ag.org/>.
104 If you have one of the following DECstation Models you definitely
105 want to choose R4xx0 for the CPU Type:
112 otherwise choose R3000.
115 bool "Jazz family of machines"
118 select ARCH_MAY_HAVE_PC_FDC
120 select GENERIC_ISA_DMA
126 select SYS_HAS_CPU_R4X00
127 select SYS_SUPPORTS_32BIT_KERNEL
128 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
129 select SYS_SUPPORTS_100HZ
130 select GENERIC_HARDIRQS_NO__DO_IRQ
132 This a family of machines based on the MIPS R4030 chipset which was
133 used by several vendors to build RISC/os and Windows NT workstations.
134 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
135 Olivetti M700-10 workstations.
138 bool "LASAT Networks platforms"
140 select DMA_NONCOHERENT
141 select SYS_HAS_EARLY_PRINTK
144 select PCI_GT64XXX_PCI0
146 select R5000_CPU_SCACHE
147 select SYS_HAS_CPU_R5000
148 select SYS_SUPPORTS_32BIT_KERNEL
149 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
150 select SYS_SUPPORTS_LITTLE_ENDIAN
151 select GENERIC_HARDIRQS_NO__DO_IRQ
154 bool "Lemote Fulong mini-PC"
155 select ARCH_SPARSEMEM_ENABLE
157 select SYS_HAS_CPU_LOONGSON2
158 select DMA_NONCOHERENT
161 select HAVE_STD_PC_SERIAL_PORT
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL
168 select SYS_SUPPORTS_LITTLE_ENDIAN
169 select SYS_SUPPORTS_HIGHMEM
170 select SYS_HAS_EARLY_PRINTK
171 select GENERIC_HARDIRQS_NO__DO_IRQ
172 select GENERIC_ISA_DMA_SUPPORT_BROKEN
175 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
179 bool "MIPS Atlas board"
182 select DMA_NONCOHERENT
183 select SYS_HAS_EARLY_PRINTK
186 select MIPS_BOARDS_GEN
188 select PCI_GT64XXX_PCI0
190 select RM7000_CPU_SCACHE
192 select SYS_HAS_CPU_MIPS32_R1
193 select SYS_HAS_CPU_MIPS32_R2
194 select SYS_HAS_CPU_MIPS64_R1
195 select SYS_HAS_CPU_NEVADA
196 select SYS_HAS_CPU_RM7000
197 select SYS_SUPPORTS_32BIT_KERNEL
198 select SYS_SUPPORTS_64BIT_KERNEL
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_LITTLE_ENDIAN
201 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
202 select SYS_SUPPORTS_SMARTMIPS
203 select GENERIC_HARDIRQS_NO__DO_IRQ
205 This enables support for the MIPS Technologies Atlas evaluation
209 bool "MIPS Malta board"
210 select ARCH_MAY_HAVE_PC_FDC
213 select DMA_NONCOHERENT
214 select GENERIC_ISA_DMA
219 select MIPS_BOARDS_GEN
221 select MIPS_CPU_SCACHE
222 select PCI_GT64XXX_PCI0
225 select SYS_HAS_CPU_MIPS32_R1
226 select SYS_HAS_CPU_MIPS32_R2
227 select SYS_HAS_CPU_MIPS64_R1
228 select SYS_HAS_CPU_NEVADA
229 select SYS_HAS_CPU_RM7000
230 select SYS_HAS_EARLY_PRINTK
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_64BIT_KERNEL
233 select SYS_SUPPORTS_BIG_ENDIAN
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select SYS_SUPPORTS_MULTITHREADING
236 select SYS_SUPPORTS_SMARTMIPS
238 This enables support for the MIPS Technologies Malta evaluation
242 bool "MIPS SEAD board"
245 select DMA_NONCOHERENT
246 select SYS_HAS_EARLY_PRINTK
247 select MIPS_BOARDS_GEN
248 select SYS_HAS_CPU_MIPS32_R1
249 select SYS_HAS_CPU_MIPS32_R2
250 select SYS_HAS_CPU_MIPS64_R1
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
253 select SYS_SUPPORTS_BIG_ENDIAN
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_SMARTMIPS
257 This enables support for the MIPS Technologies SEAD evaluation
261 bool 'MIPS simulator (MIPSsim)'
263 select DMA_NONCOHERENT
264 select SYS_HAS_EARLY_PRINTK
267 select SYS_HAS_CPU_MIPS32_R1
268 select SYS_HAS_CPU_MIPS32_R2
269 select SYS_HAS_EARLY_PRINTK
270 select SYS_SUPPORTS_32BIT_KERNEL
271 select SYS_SUPPORTS_BIG_ENDIAN
272 select SYS_SUPPORTS_MULTITHREADING
273 select SYS_SUPPORTS_LITTLE_ENDIAN
275 This option enables support for MIPS Technologies MIPSsim software
279 bool "NEC EMMA2RH Mark-eins"
281 select DMA_NONCOHERENT
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_SUPPORTS_LITTLE_ENDIAN
288 select SYS_HAS_CPU_R5000
290 This enables support for the R5432-based NEC Mark-eins
291 boards with R5500 CPU.
294 bool "NEC VR4100 series based machines"
296 select SYS_HAS_CPU_VR41XX
297 select GENERIC_HARDIRQS_NO__DO_IRQ
300 bool "Philips PNX8550 based JBS board"
302 select SYS_SUPPORTS_LITTLE_ENDIAN
304 config PNX8550_STB810
305 bool "Philips PNX8550 based STB810 board"
307 select SYS_SUPPORTS_LITTLE_ENDIAN
310 bool "PMC-Sierra MSP chipsets"
311 depends on EXPERIMENTAL
312 select DMA_NONCOHERENT
314 select NO_EXCEPT_FILL
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_BIG_ENDIAN
320 select SYS_SUPPORTS_KGDB
323 select SERIAL_8250_CONSOLE
325 This adds support for the PMC-Sierra family of Multi-Service
326 Processor System-On-A-Chips. These parts include a number
327 of integrated peripherals, interfaces and DSPs in addition to
328 a variety of MIPS cores.
331 bool "PMC-Sierra Yosemite eval board"
339 select SYS_HAS_CPU_RM9000
340 select SYS_HAS_EARLY_PRINTK
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_BIG_ENDIAN
344 select SYS_SUPPORTS_HIGHMEM
345 select SYS_SUPPORTS_KGDB
346 select SYS_SUPPORTS_SMP
348 Yosemite is an evaluation board for the RM9000x2 processor
349 manufactured by PMC-Sierra.
355 select GENERIC_ISA_DMA
356 select HAVE_STD_PC_SERIAL_PORT
363 select SYS_HAS_CPU_MIPS32_R1
364 select SYS_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
366 select SYS_SUPPORTS_LITTLE_ENDIAN
367 select ARCH_SPARSEMEM_ENABLE
368 select GENERIC_HARDIRQS_NO__DO_IRQ
369 select NR_CPUS_DEFAULT_1
370 select SYS_SUPPORTS_SMP
372 Qemu is a software emulator which among other architectures also
373 can simulate a MIPS32 4Kc system. This patch adds support for the
374 system architecture that currently is being simulated by Qemu. It
375 will eventually be removed again when Qemu has the capability to
376 simulate actual MIPS hardware platforms. More information on Qemu
377 can be found at http://www.linux-mips.org/wiki/Qemu.
380 bool "SGI IP22 (Indy/Indigo2)"
385 select DMA_NONCOHERENT
388 select IP22_CPU_SCACHE
390 select GENERIC_ISA_DMA_SUPPORT_BROKEN
392 select SYS_HAS_CPU_R4X00
393 select SYS_HAS_CPU_R5000
394 select SYS_HAS_EARLY_PRINTK
395 select SYS_SUPPORTS_32BIT_KERNEL
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
399 This are the SGI Indy, Challenge S and Indigo2, as well as certain
400 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
401 that runs on these, say Y here.
404 bool "SGI IP27 (Origin200/2000)"
409 select SYS_HAS_EARLY_PRINTK
411 select NR_CPUS_DEFAULT_64
412 select SYS_HAS_CPU_R10000
413 select SYS_SUPPORTS_64BIT_KERNEL
414 select SYS_SUPPORTS_BIG_ENDIAN
415 select SYS_SUPPORTS_KGDB
416 select SYS_SUPPORTS_NUMA
417 select SYS_SUPPORTS_SMP
418 select GENERIC_HARDIRQS_NO__DO_IRQ
420 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
421 workstations. To compile a Linux kernel that runs on these, say Y
430 select DMA_NONCOHERENT
433 select R5000_CPU_SCACHE
434 select RM7000_CPU_SCACHE
435 select SYS_HAS_CPU_R5000
436 select SYS_HAS_CPU_R10000 if BROKEN
437 select SYS_HAS_CPU_RM7000
438 select SYS_HAS_CPU_NEVADA
439 select SYS_SUPPORTS_64BIT_KERNEL
440 select SYS_SUPPORTS_BIG_ENDIAN
442 If you want this kernel to run on SGI O2 workstation, say Y here.
445 bool "Sibyte BCM91120C-CRhine"
446 depends on EXPERIMENTAL
449 select SIBYTE_BCM1120
451 select SYS_HAS_CPU_SB1
452 select SYS_SUPPORTS_BIG_ENDIAN
453 select SYS_SUPPORTS_LITTLE_ENDIAN
456 bool "Sibyte BCM91120x-Carmel"
457 depends on EXPERIMENTAL
460 select SIBYTE_BCM1120
462 select SYS_HAS_CPU_SB1
463 select SYS_SUPPORTS_BIG_ENDIAN
464 select SYS_SUPPORTS_LITTLE_ENDIAN
467 bool "Sibyte BCM91125C-CRhone"
468 depends on EXPERIMENTAL
471 select SIBYTE_BCM1125
473 select SYS_HAS_CPU_SB1
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_HIGHMEM
476 select SYS_SUPPORTS_LITTLE_ENDIAN
479 bool "Sibyte BCM91125E-Rhone"
480 depends on EXPERIMENTAL
483 select SIBYTE_BCM1125H
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_LITTLE_ENDIAN
490 bool "Sibyte BCM91250A-SWARM"
493 select NR_CPUS_DEFAULT_2
496 select SYS_HAS_CPU_SB1
497 select SYS_SUPPORTS_BIG_ENDIAN
498 select SYS_SUPPORTS_HIGHMEM
499 select SYS_SUPPORTS_KGDB
500 select SYS_SUPPORTS_LITTLE_ENDIAN
502 config SIBYTE_LITTLESUR
503 bool "Sibyte BCM91250C2-LittleSur"
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
515 config SIBYTE_SENTOSA
516 bool "Sibyte BCM91250E-Sentosa"
517 depends on EXPERIMENTAL
520 select NR_CPUS_DEFAULT_2
523 select SYS_HAS_CPU_SB1
524 select SYS_SUPPORTS_BIG_ENDIAN
525 select SYS_SUPPORTS_LITTLE_ENDIAN
527 config SIBYTE_PTSWARM
528 bool "Sibyte BCM91250PT-PTSWARM"
529 depends on EXPERIMENTAL
532 select NR_CPUS_DEFAULT_2
535 select SYS_HAS_CPU_SB1
536 select SYS_SUPPORTS_BIG_ENDIAN
537 select SYS_SUPPORTS_HIGHMEM
538 select SYS_SUPPORTS_LITTLE_ENDIAN
541 bool "Sibyte BCM91480B-BigSur"
544 select NR_CPUS_DEFAULT_4
545 select SIBYTE_BCM1x80
547 select SYS_HAS_CPU_SB1
548 select SYS_SUPPORTS_BIG_ENDIAN
549 select SYS_SUPPORTS_LITTLE_ENDIAN
552 bool "SNI RM200/300/400"
553 select ARC if CPU_LITTLE_ENDIAN
554 select ARC32 if CPU_LITTLE_ENDIAN
555 select ARCH_MAY_HAVE_PC_FDC
558 select DMA_NONCOHERENT
559 select GENERIC_ISA_DMA
567 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
568 select SYS_HAS_CPU_R4X00
569 select SYS_HAS_CPU_R5000
570 select SYS_HAS_CPU_R10000
571 select R5000_CPU_SCACHE
572 select SYS_HAS_EARLY_PRINTK
573 select SYS_SUPPORTS_32BIT_KERNEL
574 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select SYS_SUPPORTS_HIGHMEM
577 select SYS_SUPPORTS_LITTLE_ENDIAN
579 The SNI RM200/300/400 are MIPS-based machines manufactured by
580 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
581 Technology and now in turn merged with Fujitsu. Say Y here to
582 support this machine type.
584 config TOSHIBA_JMR3927
585 bool "Toshiba JMR-TX3927 board"
587 select DMA_NONCOHERENT
592 select SYS_HAS_CPU_TX39XX
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_LITTLE_ENDIAN
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select GENERIC_HARDIRQS_NO__DO_IRQ
598 config TOSHIBA_RBTX4927
599 bool "Toshiba RBTX49[23]7 board"
602 select DMA_NONCOHERENT
603 select HAS_TXX9_SERIAL
607 select I8259 if TOSHIBA_FPCIB0
609 select SYS_HAS_CPU_TX49XX
610 select SYS_SUPPORTS_32BIT_KERNEL
611 select SYS_SUPPORTS_64BIT_KERNEL
612 select SYS_SUPPORTS_LITTLE_ENDIAN
613 select SYS_SUPPORTS_BIG_ENDIAN
614 select SYS_SUPPORTS_KGDB
615 select GENERIC_HARDIRQS_NO__DO_IRQ
617 This Toshiba board is based on the TX4927 processor. Say Y here to
618 support this machine type
620 config TOSHIBA_RBTX4938
621 bool "Toshiba RBTX4938 board"
624 select DMA_NONCOHERENT
625 select HAS_TXX9_SERIAL
630 select SYS_HAS_CPU_TX49XX
631 select SYS_SUPPORTS_32BIT_KERNEL
632 select SYS_SUPPORTS_LITTLE_ENDIAN
633 select SYS_SUPPORTS_BIG_ENDIAN
634 select SYS_SUPPORTS_KGDB
635 select GENERIC_HARDIRQS_NO__DO_IRQ
638 This Toshiba board is based on the TX4938 processor. Say Y here to
639 support this machine type
642 bool "Wind River PPMC board"
646 select DMA_NONCOHERENT
648 select PCI_GT64XXX_PCI0
650 select SYS_HAS_CPU_MIPS32_R1
651 select SYS_HAS_CPU_MIPS32_R2
652 select SYS_HAS_CPU_MIPS64_R1
653 select SYS_HAS_CPU_NEVADA
654 select SYS_HAS_CPU_RM7000
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_64BIT_KERNEL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select SYS_SUPPORTS_LITTLE_ENDIAN
660 This enables support for the Wind River MIPS32 4KC PPMC evaluation
661 board, which is based on GT64120 bridge chip.
665 source "arch/mips/au1000/Kconfig"
666 source "arch/mips/jazz/Kconfig"
667 source "arch/mips/lasat/Kconfig"
668 source "arch/mips/pmc-sierra/Kconfig"
669 source "arch/mips/sgi-ip27/Kconfig"
670 source "arch/mips/sibyte/Kconfig"
671 source "arch/mips/tx4927/Kconfig"
672 source "arch/mips/tx4938/Kconfig"
673 source "arch/mips/vr41xx/Kconfig"
677 config RWSEM_GENERIC_SPINLOCK
681 config RWSEM_XCHGADD_ALGORITHM
684 config ARCH_HAS_ILOG2_U32
688 config ARCH_HAS_ILOG2_U64
692 config GENERIC_FIND_NEXT_BIT
696 config GENERIC_HWEIGHT
700 config GENERIC_CALIBRATE_DELAY
704 config GENERIC_CLOCKEVENTS
712 config GENERIC_CMOS_UPDATE
716 config SCHED_NO_NO_OMIT_FRAME_POINTER
720 config GENERIC_HARDIRQS_NO__DO_IRQ
725 # Select some configuration options automatically based on user selections.
730 config ARCH_MAY_HAVE_PC_FDC
756 select DMA_NEED_PCI_MAP_STATE
758 config DMA_NONCOHERENT
760 select DMA_NEED_PCI_MAP_STATE
762 config DMA_NEED_PCI_MAP_STATE
766 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
767 depends on SYS_HAS_EARLY_PRINTK
770 This option enables special console drivers which allow the kernel
771 to print messages very early in the bootup process.
773 This is useful for kernel debugging when your machine crashes very
774 early before the console code is initialized. For normal operation,
775 it is not recommended because it looks ugly on some machines and
776 doesn't cooperate with an X server. You should normally say N here,
777 unless you want to debug such a crash.
779 config SYS_HAS_EARLY_PRINTK
798 config MIPS_DISABLE_OBSOLETE_IDE
804 config GENERIC_ISA_DMA
806 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
808 config GENERIC_ISA_DMA_SUPPORT_BROKEN
810 select GENERIC_ISA_DMA
816 # Endianess selection. Sufficiently obscure so many users don't know what to
817 # answer,so we try hard to limit the available choices. Also the use of a
818 # choice statement should be more obvious to the user.
821 prompt "Endianess selection"
823 Some MIPS machines can be configured for either little or big endian
824 byte order. These modes require different kernels and a different
825 Linux distribution. In general there is one preferred byteorder for a
826 particular system but some systems are just as commonly used in the
827 one or the other endianness.
829 config CPU_BIG_ENDIAN
831 depends on SYS_SUPPORTS_BIG_ENDIAN
833 config CPU_LITTLE_ENDIAN
835 depends on SYS_SUPPORTS_LITTLE_ENDIAN
840 config SYS_SUPPORTS_APM_EMULATION
843 config SYS_SUPPORTS_BIG_ENDIAN
846 config SYS_SUPPORTS_LITTLE_ENDIAN
870 config MIPS_BOARDS_GEN
873 config PCI_GT64XXX_PCI0
876 config NO_EXCEPT_FILL
881 select HAS_TXX9_SERIAL
893 select DMA_NONCOHERENT
895 select SYS_HAS_CPU_MIPS32_R1
896 select SYS_HAS_EARLY_PRINTK
897 select SYS_SUPPORTS_32BIT_KERNEL
898 select GENERIC_HARDIRQS_NO__DO_IRQ
899 select SYS_SUPPORTS_KGDB
919 config MIPS_L1_CACHE_SHIFT
921 default "4" if MACH_DECSTATION
922 default "7" if SGI_IP27 || SNI_RM
923 default "4" if PMC_MSP4200_EVAL
926 config HAVE_STD_PC_SERIAL_PORT
930 bool "ARC console support"
931 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
935 depends on MACH_JAZZ || SNI_RM || SGI_IP32
940 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
951 source "kernel/time/Kconfig"
959 depends on SYS_HAS_CPU_LOONGSON2
960 select CPU_SUPPORTS_32BIT_KERNEL
961 select CPU_SUPPORTS_64BIT_KERNEL
962 select CPU_SUPPORTS_HIGHMEM
964 The Loongson 2E processor implements the MIPS III instruction set
965 with many extensions.
968 bool "MIPS32 Release 1"
969 depends on SYS_HAS_CPU_MIPS32_R1
971 select CPU_HAS_PREFETCH
972 select CPU_SUPPORTS_32BIT_KERNEL
973 select CPU_SUPPORTS_HIGHMEM
975 Choose this option to build a kernel for release 1 or later of the
976 MIPS32 architecture. Most modern embedded systems with a 32-bit
977 MIPS processor are based on a MIPS32 processor. If you know the
978 specific type of processor in your system, choose those that one
979 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
980 Release 2 of the MIPS32 architecture is available since several
981 years so chances are you even have a MIPS32 Release 2 processor
982 in which case you should choose CPU_MIPS32_R2 instead for better
986 bool "MIPS32 Release 2"
987 depends on SYS_HAS_CPU_MIPS32_R2
989 select CPU_HAS_PREFETCH
990 select CPU_SUPPORTS_32BIT_KERNEL
991 select CPU_SUPPORTS_HIGHMEM
993 Choose this option to build a kernel for release 2 or later of the
994 MIPS32 architecture. Most modern embedded systems with a 32-bit
995 MIPS processor are based on a MIPS32 processor. If you know the
996 specific type of processor in your system, choose those that one
997 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1000 bool "MIPS64 Release 1"
1001 depends on SYS_HAS_CPU_MIPS64_R1
1003 select CPU_HAS_PREFETCH
1004 select CPU_SUPPORTS_32BIT_KERNEL
1005 select CPU_SUPPORTS_64BIT_KERNEL
1006 select CPU_SUPPORTS_HIGHMEM
1008 Choose this option to build a kernel for release 1 or later of the
1009 MIPS64 architecture. Many modern embedded systems with a 64-bit
1010 MIPS processor are based on a MIPS64 processor. If you know the
1011 specific type of processor in your system, choose those that one
1012 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1013 Release 2 of the MIPS64 architecture is available since several
1014 years so chances are you even have a MIPS64 Release 2 processor
1015 in which case you should choose CPU_MIPS64_R2 instead for better
1018 config CPU_MIPS64_R2
1019 bool "MIPS64 Release 2"
1020 depends on SYS_HAS_CPU_MIPS64_R2
1022 select CPU_HAS_PREFETCH
1023 select CPU_SUPPORTS_32BIT_KERNEL
1024 select CPU_SUPPORTS_64BIT_KERNEL
1025 select CPU_SUPPORTS_HIGHMEM
1027 Choose this option to build a kernel for release 2 or later of the
1028 MIPS64 architecture. Many modern embedded systems with a 64-bit
1029 MIPS processor are based on a MIPS64 processor. If you know the
1030 specific type of processor in your system, choose those that one
1031 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1035 depends on SYS_HAS_CPU_R3000
1037 select CPU_SUPPORTS_32BIT_KERNEL
1038 select CPU_SUPPORTS_HIGHMEM
1040 Please make sure to pick the right CPU type. Linux/MIPS is not
1041 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1042 *not* work on R4000 machines and vice versa. However, since most
1043 of the supported machines have an R4000 (or similar) CPU, R4x00
1044 might be a safe bet. If the resulting kernel does not work,
1045 try to recompile with R3000.
1049 depends on SYS_HAS_CPU_TX39XX
1050 select CPU_SUPPORTS_32BIT_KERNEL
1054 depends on SYS_HAS_CPU_VR41XX
1055 select CPU_SUPPORTS_32BIT_KERNEL
1056 select CPU_SUPPORTS_64BIT_KERNEL
1058 The options selects support for the NEC VR4100 series of processors.
1059 Only choose this option if you have one of these processors as a
1060 kernel built with this option will not run on any other type of
1061 processor or vice versa.
1065 depends on SYS_HAS_CPU_R4300
1067 select CPU_SUPPORTS_32BIT_KERNEL
1068 select CPU_SUPPORTS_64BIT_KERNEL
1070 MIPS Technologies R4300-series processors.
1074 depends on SYS_HAS_CPU_R4X00
1076 select CPU_SUPPORTS_32BIT_KERNEL
1077 select CPU_SUPPORTS_64BIT_KERNEL
1079 MIPS Technologies R4000-series processors other than 4300, including
1080 the R4000, R4400, R4600, and 4700.
1084 depends on SYS_HAS_CPU_TX49XX
1086 select CPU_HAS_PREFETCH
1087 select CPU_SUPPORTS_32BIT_KERNEL
1088 select CPU_SUPPORTS_64BIT_KERNEL
1092 depends on SYS_HAS_CPU_R5000
1094 select CPU_SUPPORTS_32BIT_KERNEL
1095 select CPU_SUPPORTS_64BIT_KERNEL
1097 MIPS Technologies R5000-series processors other than the Nevada.
1101 depends on SYS_HAS_CPU_R5432
1103 select CPU_SUPPORTS_32BIT_KERNEL
1104 select CPU_SUPPORTS_64BIT_KERNEL
1108 depends on EXPERIMENTAL
1110 depends on SYS_HAS_CPU_R6000
1111 select CPU_SUPPORTS_32BIT_KERNEL
1113 MIPS Technologies R6000 and R6000A series processors. Note these
1114 processors are extremely rare and the support for them is incomplete.
1118 depends on SYS_HAS_CPU_NEVADA
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1123 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1127 depends on EXPERIMENTAL
1128 depends on SYS_HAS_CPU_R8000
1130 select CPU_HAS_PREFETCH
1131 select CPU_SUPPORTS_64BIT_KERNEL
1133 MIPS Technologies R8000 processors. Note these processors are
1134 uncommon and the support for them is incomplete.
1138 depends on SYS_HAS_CPU_R10000
1140 select CPU_HAS_PREFETCH
1141 select CPU_SUPPORTS_32BIT_KERNEL
1142 select CPU_SUPPORTS_64BIT_KERNEL
1143 select CPU_SUPPORTS_HIGHMEM
1145 MIPS Technologies R10000-series processors.
1149 depends on SYS_HAS_CPU_RM7000
1151 select CPU_HAS_PREFETCH
1152 select CPU_SUPPORTS_32BIT_KERNEL
1153 select CPU_SUPPORTS_64BIT_KERNEL
1154 select CPU_SUPPORTS_HIGHMEM
1158 depends on SYS_HAS_CPU_RM9000
1160 select CPU_HAS_PREFETCH
1161 select CPU_SUPPORTS_32BIT_KERNEL
1162 select CPU_SUPPORTS_64BIT_KERNEL
1163 select CPU_SUPPORTS_HIGHMEM
1164 select WEAK_ORDERING
1168 depends on SYS_HAS_CPU_SB1
1170 select CPU_SUPPORTS_32BIT_KERNEL
1171 select CPU_SUPPORTS_64BIT_KERNEL
1172 select CPU_SUPPORTS_HIGHMEM
1173 select WEAK_ORDERING
1177 config SYS_HAS_CPU_LOONGSON2
1180 config SYS_HAS_CPU_MIPS32_R1
1183 config SYS_HAS_CPU_MIPS32_R2
1186 config SYS_HAS_CPU_MIPS64_R1
1189 config SYS_HAS_CPU_MIPS64_R2
1192 config SYS_HAS_CPU_R3000
1195 config SYS_HAS_CPU_TX39XX
1198 config SYS_HAS_CPU_VR41XX
1201 config SYS_HAS_CPU_R4300
1204 config SYS_HAS_CPU_R4X00
1207 config SYS_HAS_CPU_TX49XX
1210 config SYS_HAS_CPU_R5000
1213 config SYS_HAS_CPU_R5432
1216 config SYS_HAS_CPU_R6000
1219 config SYS_HAS_CPU_NEVADA
1222 config SYS_HAS_CPU_R8000
1225 config SYS_HAS_CPU_R10000
1228 config SYS_HAS_CPU_RM7000
1231 config SYS_HAS_CPU_RM9000
1234 config SYS_HAS_CPU_SB1
1238 # CPU may reorder R->R, R->W, W->R, W->W
1239 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1241 config WEAK_ORDERING
1245 # CPU may reorder reads and writes beyond LL/SC
1246 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1248 config WEAK_REORDERING_BEYOND_LLSC
1253 # These two indicate any level of the MIPS32 and MIPS64 architecture
1257 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1261 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1264 # These two indicate the revision of the architecture, either Release 1 or Release 2
1268 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1272 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1274 config SYS_SUPPORTS_32BIT_KERNEL
1276 config SYS_SUPPORTS_64BIT_KERNEL
1278 config CPU_SUPPORTS_32BIT_KERNEL
1280 config CPU_SUPPORTS_64BIT_KERNEL
1287 prompt "Kernel code model"
1289 You should only select this option if you have a workload that
1290 actually benefits from 64-bit processing or if your machine has
1291 large memory. You will only be presented a single option in this
1292 menu if your system does not support both 32-bit and 64-bit kernels.
1295 bool "32-bit kernel"
1296 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1299 Select this option if you want to build a 32-bit kernel.
1301 bool "64-bit kernel"
1302 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1304 Select this option if you want to build a 64-bit kernel.
1309 prompt "Kernel page size"
1310 default PAGE_SIZE_4KB
1312 config PAGE_SIZE_4KB
1315 This option select the standard 4kB Linux page size. On some
1316 R3000-family processors this is the only available page size. Using
1317 4kB page size will minimize memory consumption and is therefore
1318 recommended for low memory systems.
1320 config PAGE_SIZE_8KB
1322 depends on EXPERIMENTAL && CPU_R8000
1324 Using 8kB page size will result in higher performance kernel at
1325 the price of higher memory consumption. This option is available
1326 only on the R8000 processor. Not that at the time of this writing
1327 this option is still high experimental; there are also issues with
1328 compatibility of user applications.
1330 config PAGE_SIZE_16KB
1332 depends on !CPU_R3000 && !CPU_TX39XX
1334 Using 16kB page size will result in higher performance kernel at
1335 the price of higher memory consumption. This option is available on
1336 all non-R3000 family processors. Note that you will need a suitable
1337 Linux distribution to support this.
1339 config PAGE_SIZE_64KB
1341 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1343 Using 64kB page size will result in higher performance kernel at
1344 the price of higher memory consumption. This option is available on
1345 all non-R3000 family processor. Not that at the time of this
1346 writing this option is still high experimental.
1353 config IP22_CPU_SCACHE
1358 # Support for a MIPS32 / MIPS64 style S-caches
1360 config MIPS_CPU_SCACHE
1364 config R5000_CPU_SCACHE
1368 config RM7000_CPU_SCACHE
1372 config SIBYTE_DMA_PAGEOPS
1373 bool "Use DMA to clear/copy pages"
1376 Instead of using the CPU to zero and copy pages, use a Data Mover
1377 channel. These DMA channels are otherwise unused by the standard
1378 SiByte Linux port. Seems to give a small performance benefit.
1380 config CPU_HAS_PREFETCH
1384 prompt "MIPS MT options"
1386 config MIPS_MT_DISABLED
1387 bool "Disable multithreading support."
1389 Use this option if your workload can't take advantage of
1390 MIPS hardware multithreading support. On systems that don't have
1391 the option of an MT-enabled processor this option will be the only
1392 option in this menu.
1395 bool "Use 1 TC on each available VPE for SMP"
1396 depends on SYS_SUPPORTS_MULTITHREADING
1397 select CPU_MIPSR2_IRQ_VI
1398 select CPU_MIPSR2_IRQ_EI
1399 select CPU_MIPSR2_SRS
1401 select NR_CPUS_DEFAULT_2
1403 select SYS_SUPPORTS_SMP
1405 This is a kernel model which is also known a VSMP or lately
1406 has been marketesed into SMVP.
1409 bool "SMTC: Use all TCs on all VPEs for SMP"
1410 depends on CPU_MIPS32_R2
1411 #depends on CPU_MIPS64_R2 # once there is hardware ...
1412 depends on SYS_SUPPORTS_MULTITHREADING
1413 select GENERIC_CLOCKEVENTS_BROADCAST
1414 select CPU_MIPSR2_IRQ_VI
1415 select CPU_MIPSR2_IRQ_EI
1416 select CPU_MIPSR2_SRS
1418 select NR_CPUS_DEFAULT_8
1420 select SYS_SUPPORTS_SMP
1422 This is a kernel model which is known a SMTC or lately has been
1423 marketesed into SMVP.
1430 config SYS_SUPPORTS_MULTITHREADING
1433 config MIPS_MT_FPAFF
1434 bool "Dynamic FPU affinity for FP-intensive threads"
1436 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1438 config MIPS_VPE_LOADER
1439 bool "VPE loader support."
1440 depends on SYS_SUPPORTS_MULTITHREADING
1441 select CPU_MIPSR2_IRQ_VI
1442 select CPU_MIPSR2_IRQ_EI
1443 select CPU_MIPSR2_SRS
1446 Includes a loader for loading an elf relocatable object
1447 onto another VPE and running it.
1449 config MIPS_MT_SMTC_INSTANT_REPLAY
1450 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1451 depends on MIPS_MT_SMTC && !PREEMPT
1454 SMTC pseudo-interrupts between TCs are deferred and queued
1455 if the target TC is interrupt-inhibited (IXMT). In the first
1456 SMTC prototypes, these queued IPIs were serviced on return
1457 to user mode, or on entry into the kernel idle loop. The
1458 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1459 processing, which adds runtime overhead (hence the option to turn
1460 it off), but ensures that IPIs are handled promptly even under
1461 heavy I/O interrupt load.
1463 config MIPS_MT_SMTC_IM_BACKSTOP
1464 bool "Use per-TC register bits as backstop for inhibited IM bits"
1465 depends on MIPS_MT_SMTC
1468 To support multiple TC microthreads acting as "CPUs" within
1469 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1470 during interrupt handling. To support legacy drivers and interrupt
1471 controller management code, SMTC has a "backstop" to track and
1472 if necessary restore the interrupt mask. This has some performance
1473 impact on interrupt service overhead. Disable it only if you know
1476 config MIPS_MT_SMTC_IRQAFF
1477 bool "Support IRQ affinity API"
1478 depends on MIPS_MT_SMTC
1481 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1482 for SMTC Linux kernel. Requires platform support, of which
1483 an example can be found in the MIPS kernel i8259 and Malta
1484 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1485 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1486 interrupt dispatch, and should be used only if you know what
1489 config MIPS_VPE_LOADER_TOM
1490 bool "Load VPE program into memory hidden from linux"
1491 depends on MIPS_VPE_LOADER
1494 The loader can use memory that is present but has been hidden from
1495 Linux using the kernel command line option "mem=xxMB". It's up to
1496 you to ensure the amount you put in the option and the space your
1497 program requires is less or equal to the amount physically present.
1499 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1500 config MIPS_VPE_APSP_API
1501 bool "Enable support for AP/SP API (RTLX)"
1502 depends on MIPS_VPE_LOADER
1505 config MIPS_APSP_KSPD
1507 depends on MIPS_VPE_APSP_API
1510 KSPD is a kernel daemon that accepts syscall requests from the SP
1511 side, actions them and returns the results. It also handles the
1512 "exit" syscall notifying other kernel modules the SP program is
1513 exiting. You probably want to say yes here.
1515 config SB1_PASS_1_WORKAROUNDS
1517 depends on CPU_SB1_PASS_1
1520 config SB1_PASS_2_WORKAROUNDS
1522 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1525 config SB1_PASS_2_1_WORKAROUNDS
1527 depends on CPU_SB1 && CPU_SB1_PASS_2
1530 config 64BIT_PHYS_ADDR
1536 config CPU_HAS_SMARTMIPS
1537 depends on SYS_SUPPORTS_SMARTMIPS
1538 bool "Support for the SmartMIPS ASE"
1540 SmartMIPS is a extension of the MIPS32 architecture aimed at
1541 increased security at both hardware and software level for
1542 smartcards. Enabling this option will allow proper use of the
1543 SmartMIPS instructions by Linux applications. However a kernel with
1544 this option will not work on a MIPS core without SmartMIPS core. If
1545 you don't know you probably don't have SmartMIPS and should say N
1551 config 64BIT_CONTEXT
1552 bool "Save 64bit integer registers"
1553 depends on 32BIT && CPU_LOONGSON2
1555 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1556 registers can still be accessed as 64bit, mainly for multimedia
1557 instructions. We must have all 64bit save/restored to make sure
1558 those instructions to get correct result.
1561 # Vectored interrupt mode is an R2 feature
1563 config CPU_MIPSR2_IRQ_VI
1567 # Extended interrupt mode is an R2 feature
1569 config CPU_MIPSR2_IRQ_EI
1573 # Shadow registers are an R2 feature
1575 config CPU_MIPSR2_SRS
1580 depends on !CPU_R3000
1583 config GENERIC_CLOCKEVENTS_BROADCAST
1587 # Use the generic interrupt handling code in kernel/irq/:
1589 config GENERIC_HARDIRQS
1593 config GENERIC_IRQ_PROBE
1601 # - Highmem only makes sense for the 32-bit kernel.
1602 # - The current highmem code will only work properly on physically indexed
1603 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1604 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1605 # moment we protect the user and offer the highmem option only on machines
1606 # where it's known to be safe. This will not offer highmem on a few systems
1607 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1608 # indexed CPUs but we're playing safe.
1609 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1610 # know they might have memory configurations that could make use of highmem
1614 bool "High Memory Support"
1615 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1617 config CPU_SUPPORTS_HIGHMEM
1620 config SYS_SUPPORTS_HIGHMEM
1623 config SYS_SUPPORTS_SMARTMIPS
1626 config ARCH_FLATMEM_ENABLE
1630 config ARCH_DISCONTIGMEM_ENABLE
1632 default y if SGI_IP27
1634 Say Y to support efficient handling of discontiguous physical memory,
1635 for architectures which are either NUMA (Non-Uniform Memory Access)
1636 or have huge holes in the physical address space for other reasons.
1637 See <file:Documentation/vm/numa> for more.
1639 config ARCH_SPARSEMEM_ENABLE
1641 select SPARSEMEM_STATIC
1645 depends on SYS_SUPPORTS_NUMA
1647 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1648 Access). This option improves performance on systems with more
1649 than two nodes; on two node systems it is generally better to
1650 leave it disabled; on single node systems disable this option
1653 config SYS_SUPPORTS_NUMA
1659 depends on NEED_MULTIPLE_NODES
1664 bool "Multi-Processing support"
1665 depends on SYS_SUPPORTS_SMP
1668 This enables support for systems with more than one CPU. If you have
1669 a system with only one CPU, like most personal computers, say N. If
1670 you have a system with more than one CPU, say Y.
1672 If you say N here, the kernel will run on single and multiprocessor
1673 machines, but will use only one CPU of a multiprocessor machine. If
1674 you say Y here, the kernel will run on many, but not all,
1675 singleprocessor machines. On a singleprocessor machine, the kernel
1676 will run faster if you say N here.
1678 People using multiprocessor machines who say Y here should also say
1679 Y to "Enhanced Real Time Clock Support", below.
1681 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1682 available at <http://www.tldp.org/docs.html#howto>.
1684 If you don't know what to do here, say N.
1686 config SYS_SUPPORTS_SMP
1689 config NR_CPUS_DEFAULT_1
1692 config NR_CPUS_DEFAULT_2
1695 config NR_CPUS_DEFAULT_4
1698 config NR_CPUS_DEFAULT_8
1701 config NR_CPUS_DEFAULT_16
1704 config NR_CPUS_DEFAULT_32
1707 config NR_CPUS_DEFAULT_64
1711 int "Maximum number of CPUs (2-64)"
1712 range 1 64 if NR_CPUS_DEFAULT_1
1714 default "1" if NR_CPUS_DEFAULT_1
1715 default "2" if NR_CPUS_DEFAULT_2
1716 default "4" if NR_CPUS_DEFAULT_4
1717 default "8" if NR_CPUS_DEFAULT_8
1718 default "16" if NR_CPUS_DEFAULT_16
1719 default "32" if NR_CPUS_DEFAULT_32
1720 default "64" if NR_CPUS_DEFAULT_64
1722 This allows you to specify the maximum number of CPUs which this
1723 kernel will support. The maximum supported value is 32 for 32-bit
1724 kernel and 64 for 64-bit kernels; the minimum value which makes
1725 sense is 1 for Qemu (useful only for kernel debugging purposes)
1726 and 2 for all others.
1728 This is purely to save memory - each supported CPU adds
1729 approximately eight kilobytes to the kernel image. For best
1730 performance should round up your number of processors to the next
1734 # Timer Interrupt Frequency Configuration
1738 prompt "Timer frequency"
1741 Allows the configuration of the timer frequency.
1744 bool "48 HZ" if SYS_SUPPORTS_48HZ
1747 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1750 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1753 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1756 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1759 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1762 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1766 config SYS_SUPPORTS_48HZ
1769 config SYS_SUPPORTS_100HZ
1772 config SYS_SUPPORTS_128HZ
1775 config SYS_SUPPORTS_250HZ
1778 config SYS_SUPPORTS_256HZ
1781 config SYS_SUPPORTS_1000HZ
1784 config SYS_SUPPORTS_1024HZ
1787 config SYS_SUPPORTS_ARBIT_HZ
1789 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1790 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1791 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1792 !SYS_SUPPORTS_1024HZ
1797 default 100 if HZ_100
1798 default 128 if HZ_128
1799 default 250 if HZ_250
1800 default 256 if HZ_256
1801 default 1000 if HZ_1000
1802 default 1024 if HZ_1024
1804 source "kernel/Kconfig.preempt"
1806 config MIPS_INSANE_LARGE
1807 bool "Support for large 64-bit configurations"
1808 depends on CPU_R10000 && 64BIT
1810 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1811 previous 64-bit processors which only supported 40 bit / 1TB. If you
1812 need processes of more than 1TB virtual address space, say Y here.
1813 This will result in additional memory usage, so it is not
1814 recommended for normal users.
1817 bool "Kexec system call (EXPERIMENTAL)"
1818 depends on EXPERIMENTAL
1820 kexec is a system call that implements the ability to shutdown your
1821 current kernel, and to start another kernel. It is like a reboot
1822 but it is independent of the system firmware. And like a reboot
1823 you can start any kernel with it, not just Linux.
1825 The name comes from the similarity to the exec system call.
1827 It is an ongoing process to be certain the hardware in a machine
1828 is properly shutdown, so do not be surprised if this code does not
1829 initially work for you. It may help to enable device hotplugging
1830 support. As of this writing the exact hardware interface is
1831 strongly in flux, so no good recommendation can be made.
1834 bool "Enable seccomp to safely compute untrusted bytecode"
1838 This kernel feature is useful for number crunching applications
1839 that may need to compute untrusted bytecode during their
1840 execution. By using pipes or other transports made available to
1841 the process as file descriptors supporting the read/write
1842 syscalls, it's possible to isolate those applications in
1843 their own address space using seccomp. Once seccomp is
1844 enabled via /proc/<pid>/seccomp, it cannot be disabled
1845 and the task is only allowed to execute a few safe syscalls
1846 defined by each seccomp mode.
1848 If unsure, say Y. Only embedded should say N here.
1852 config RWSEM_GENERIC_SPINLOCK
1856 config LOCKDEP_SUPPORT
1860 config STACKTRACE_SUPPORT
1864 source "init/Kconfig"
1866 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1874 bool "Support for PCI controller"
1875 depends on HW_HAS_PCI
1878 Find out whether you have a PCI motherboard. PCI is the name of a
1879 bus system, i.e. the way the CPU talks to the other stuff inside
1880 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1883 The PCI-HOWTO, available from
1884 <http://www.tldp.org/docs.html#howto>, contains valuable
1885 information about which PCI hardware does work under Linux and which
1891 source "drivers/pci/Kconfig"
1894 # ISA support is now enabled via select. Too many systems still have the one
1895 # or other ISA chip on the board that users don't know about so don't expect
1896 # users to choose the right thing ...
1903 depends on HW_HAS_EISA
1905 select GENERIC_ISA_DMA
1907 The Extended Industry Standard Architecture (EISA) bus was
1908 developed as an open alternative to the IBM MicroChannel bus.
1910 The EISA bus provided some of the features of the IBM MicroChannel
1911 bus while maintaining backward compatibility with cards made for
1912 the older ISA bus. The EISA bus saw limited use between 1988 and
1913 1995 when it was made obsolete by the PCI bus.
1915 Say Y here if you are building a kernel for an EISA-based machine.
1919 source "drivers/eisa/Kconfig"
1922 bool "TURBOchannel support"
1923 depends on MACH_DECSTATION
1925 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1926 processors. Documentation on writing device drivers for TurboChannel
1928 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1931 # bool "Access.Bus support"
1944 source "drivers/pcmcia/Kconfig"
1946 source "drivers/pci/hotplug/Kconfig"
1950 menu "Executable file formats"
1952 source "fs/Kconfig.binfmt"
1958 bool "Include IRIX binary compatibility"
1959 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1961 config MIPS32_COMPAT
1962 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1965 Select this option if you want Linux/MIPS 32-bit binary
1966 compatibility. Since all software available for Linux/MIPS is
1967 currently 32-bit you should say Y here.
1971 depends on MIPS32_COMPAT
1974 config SYSVIPC_COMPAT
1976 depends on COMPAT && SYSVIPC
1980 bool "Kernel support for o32 binaries"
1981 depends on MIPS32_COMPAT
1983 Select this option if you want to run o32 binaries. These are pure
1984 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1985 existing binaries are in this format.
1990 bool "Kernel support for n32 binaries"
1991 depends on MIPS32_COMPAT
1993 Select this option if you want to run n32 binaries. These are
1994 64-bit binaries using 32-bit quantities for addressing and certain
1995 data that would normally be 64-bit. They are used in special
2002 default y if MIPS32_O32 || MIPS32_N32
2006 menu "Power management options"
2008 source "kernel/power/Kconfig"
2012 source "net/Kconfig"
2014 source "drivers/Kconfig"
2018 source "kernel/Kconfig.instrumentation"
2020 source "arch/mips/Kconfig.debug"
2022 source "security/Kconfig"
2024 source "crypto/Kconfig"
2026 source "lib/Kconfig"