4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "Alchemy processor based machines"
22 bool "Basler eXcite smart camera"
29 select SYS_HAS_CPU_RM9000
30 select SYS_SUPPORTS_32BIT_KERNEL
31 select SYS_SUPPORTS_64BIT_KERNEL
32 select SYS_SUPPORTS_BIG_ENDIAN
33 select SYS_SUPPORTS_KGDB
35 The eXcite is a smart camera platform manufactured by
36 Basler Vision Technologies AG.
38 config BASLER_EXCITE_PROTOTYPE
39 bool "Support for pre-release units"
40 depends on BASLER_EXCITE
43 Pre-series (prototype) units are different from later ones in
44 some ways. Select this option if you have one of these. Please
45 note that a kernel built with this option selected will not be
46 able to run on normal units.
50 select DMA_NONCOHERENT
54 select PCI_GT64XXX_PCI0
55 select SYS_HAS_CPU_NEVADA
56 select SYS_HAS_EARLY_PRINTK
57 select SYS_SUPPORTS_32BIT_KERNEL
58 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
59 select SYS_SUPPORTS_LITTLE_ENDIAN
60 select GENERIC_HARDIRQS_NO__DO_IRQ
62 config MACH_DECSTATION
65 select DMA_NONCOHERENT
68 select SYS_HAS_CPU_R3000
69 select SYS_HAS_CPU_R4X00
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
73 select SYS_SUPPORTS_128HZ
74 select SYS_SUPPORTS_256HZ
75 select SYS_SUPPORTS_1024HZ
77 This enables support for DEC's MIPS based workstations. For details
78 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
79 DECstation porting pages on <http://decstation.unix-ag.org/>.
81 If you have one of the following DECstation Models you definitely
82 want to choose R4xx0 for the CPU Type:
89 otherwise choose R3000.
92 bool "Jazz family of machines"
95 select ARCH_MAY_HAVE_PC_FDC
96 select GENERIC_ISA_DMA
100 select SYS_HAS_CPU_R4X00
101 select SYS_SUPPORTS_32BIT_KERNEL
102 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
103 select SYS_SUPPORTS_100HZ
104 select GENERIC_HARDIRQS_NO__DO_IRQ
106 This a family of machines based on the MIPS R4030 chipset which was
107 used by several vendors to build RISC/os and Windows NT workstations.
108 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
109 Olivetti M700-10 workstations.
112 bool "Lemote Fulong mini-PC"
113 select ARCH_SPARSEMEM_ENABLE
114 select SYS_HAS_CPU_LOONGSON2
115 select DMA_NONCOHERENT
118 select HAVE_STD_PC_SERIAL_PORT
123 select SYS_SUPPORTS_32BIT_KERNEL
124 select SYS_SUPPORTS_64BIT_KERNEL
125 select SYS_SUPPORTS_LITTLE_ENDIAN
126 select SYS_SUPPORTS_HIGHMEM
127 select SYS_HAS_EARLY_PRINTK
128 select GENERIC_HARDIRQS_NO__DO_IRQ
131 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
135 bool "MIPS Atlas board"
137 select DMA_NONCOHERENT
138 select SYS_HAS_EARLY_PRINTK
141 select MIPS_BOARDS_GEN
143 select PCI_GT64XXX_PCI0
145 select RM7000_CPU_SCACHE
147 select SYS_HAS_CPU_MIPS32_R1
148 select SYS_HAS_CPU_MIPS32_R2
149 select SYS_HAS_CPU_MIPS64_R1
150 select SYS_HAS_CPU_NEVADA
151 select SYS_HAS_CPU_RM7000
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_64BIT_KERNEL
154 select SYS_SUPPORTS_BIG_ENDIAN
155 select SYS_SUPPORTS_LITTLE_ENDIAN
156 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
157 select SYS_SUPPORTS_SMARTMIPS
158 select GENERIC_HARDIRQS_NO__DO_IRQ
160 This enables support for the MIPS Technologies Atlas evaluation
164 bool "MIPS Malta board"
165 select ARCH_MAY_HAVE_PC_FDC
167 select DMA_NONCOHERENT
168 select GENERIC_ISA_DMA
172 select MIPS_BOARDS_GEN
174 select MIPS_CPU_SCACHE
175 select PCI_GT64XXX_PCI0
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_HAS_CPU_MIPS32_R2
180 select SYS_HAS_CPU_MIPS64_R1
181 select SYS_HAS_CPU_NEVADA
182 select SYS_HAS_CPU_RM7000
183 select SYS_HAS_EARLY_PRINTK
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
189 select SYS_SUPPORTS_SMARTMIPS
191 This enables support for the MIPS Technologies Malta evaluation
195 bool "MIPS SEAD board"
197 select DMA_NONCOHERENT
198 select SYS_HAS_EARLY_PRINTK
199 select MIPS_BOARDS_GEN
200 select SYS_HAS_CPU_MIPS32_R1
201 select SYS_HAS_CPU_MIPS32_R2
202 select SYS_HAS_CPU_MIPS64_R1
203 select SYS_SUPPORTS_32BIT_KERNEL
204 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
205 select SYS_SUPPORTS_BIG_ENDIAN
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select SYS_SUPPORTS_SMARTMIPS
209 This enables support for the MIPS Technologies SEAD evaluation
213 bool 'MIPS simulator (MIPSsim)'
214 select DMA_NONCOHERENT
215 select SYS_HAS_EARLY_PRINTK
218 select SYS_HAS_CPU_MIPS32_R1
219 select SYS_HAS_CPU_MIPS32_R2
220 select SYS_HAS_EARLY_PRINTK
221 select SYS_SUPPORTS_32BIT_KERNEL
222 select SYS_SUPPORTS_BIG_ENDIAN
223 select SYS_SUPPORTS_MULTITHREADING
224 select SYS_SUPPORTS_LITTLE_ENDIAN
226 This option enables support for MIPS Technologies MIPSsim software
230 bool "NEC EMMA2RH Mark-eins"
231 select DMA_NONCOHERENT
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_BIG_ENDIAN
237 select SYS_SUPPORTS_LITTLE_ENDIAN
238 select SYS_HAS_CPU_R5000
240 This enables support for the R5432-based NEC Mark-eins
241 boards with R5500 CPU.
244 bool "NEC VR4100 series based machines"
245 select SYS_HAS_CPU_VR41XX
246 select GENERIC_HARDIRQS_NO__DO_IRQ
249 bool "Philips PNX8550 based JBS board"
251 select SYS_SUPPORTS_LITTLE_ENDIAN
253 config PNX8550_STB810
254 bool "Philips PNX8550 based STB810 board"
256 select SYS_SUPPORTS_LITTLE_ENDIAN
259 bool "PMC-Sierra MSP chipsets"
260 depends on EXPERIMENTAL
261 select DMA_NONCOHERENT
263 select NO_EXCEPT_FILL
265 select SYS_HAS_CPU_MIPS32_R1
266 select SYS_HAS_CPU_MIPS32_R2
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_BIG_ENDIAN
269 select SYS_SUPPORTS_KGDB
272 select SERIAL_8250_CONSOLE
274 This adds support for the PMC-Sierra family of Multi-Service
275 Processor System-On-A-Chips. These parts include a number
276 of integrated peripherals, interfaces and DSPs in addition to
277 a variety of MIPS cores.
280 bool "PMC-Sierra Yosemite eval board"
287 select SYS_HAS_CPU_RM9000
288 select SYS_HAS_EARLY_PRINTK
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_64BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_SUPPORTS_HIGHMEM
293 select SYS_SUPPORTS_KGDB
294 select SYS_SUPPORTS_SMP
296 Yosemite is an evaluation board for the RM9000x2 processor
297 manufactured by PMC-Sierra.
302 select GENERIC_ISA_DMA
303 select HAVE_STD_PC_SERIAL_PORT
308 select SYS_HAS_CPU_MIPS32_R1
309 select SYS_SUPPORTS_32BIT_KERNEL
310 select SYS_SUPPORTS_BIG_ENDIAN
311 select SYS_SUPPORTS_LITTLE_ENDIAN
312 select ARCH_SPARSEMEM_ENABLE
313 select GENERIC_HARDIRQS_NO__DO_IRQ
314 select NR_CPUS_DEFAULT_1
315 select SYS_SUPPORTS_SMP
317 Qemu is a software emulator which among other architectures also
318 can simulate a MIPS32 4Kc system. This patch adds support for the
319 system architecture that currently is being simulated by Qemu. It
320 will eventually be removed again when Qemu has the capability to
321 simulate actual MIPS hardware platforms. More information on Qemu
322 can be found at http://www.linux-mips.org/wiki/Qemu.
325 bool "SGI IP22 (Indy/Indigo2)"
329 select DMA_NONCOHERENT
331 select IP22_CPU_SCACHE
333 select GENERIC_ISA_DMA_SUPPORT_BROKEN
335 select SYS_HAS_CPU_R4X00
336 select SYS_HAS_CPU_R5000
337 select SYS_HAS_EARLY_PRINTK
338 select SYS_SUPPORTS_32BIT_KERNEL
339 select SYS_SUPPORTS_64BIT_KERNEL
340 select SYS_SUPPORTS_BIG_ENDIAN
342 This are the SGI Indy, Challenge S and Indigo2, as well as certain
343 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
344 that runs on these, say Y here.
347 bool "SGI IP27 (Origin200/2000)"
352 select SYS_HAS_EARLY_PRINTK
354 select NR_CPUS_DEFAULT_64
356 select SYS_HAS_CPU_R10000
357 select SYS_SUPPORTS_64BIT_KERNEL
358 select SYS_SUPPORTS_BIG_ENDIAN
359 select SYS_SUPPORTS_KGDB
360 select SYS_SUPPORTS_NUMA
361 select SYS_SUPPORTS_SMP
362 select GENERIC_HARDIRQS_NO__DO_IRQ
364 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
365 workstations. To compile a Linux kernel that runs on these, say Y
373 select DMA_NONCOHERENT
375 select R5000_CPU_SCACHE
376 select RM7000_CPU_SCACHE
377 select SYS_HAS_CPU_R5000
378 select SYS_HAS_CPU_R10000 if BROKEN
379 select SYS_HAS_CPU_RM7000
380 select SYS_HAS_CPU_NEVADA
381 select SYS_SUPPORTS_64BIT_KERNEL
382 select SYS_SUPPORTS_BIG_ENDIAN
384 If you want this kernel to run on SGI O2 workstation, say Y here.
387 bool "Sibyte BCM91120C-CRhine"
388 depends on EXPERIMENTAL
391 select SIBYTE_BCM1120
393 select SYS_HAS_CPU_SB1
394 select SYS_SUPPORTS_BIG_ENDIAN
395 select SYS_SUPPORTS_LITTLE_ENDIAN
398 bool "Sibyte BCM91120x-Carmel"
399 depends on EXPERIMENTAL
402 select SIBYTE_BCM1120
404 select SYS_HAS_CPU_SB1
405 select SYS_SUPPORTS_BIG_ENDIAN
406 select SYS_SUPPORTS_LITTLE_ENDIAN
409 bool "Sibyte BCM91125C-CRhone"
410 depends on EXPERIMENTAL
413 select SIBYTE_BCM1125
415 select SYS_HAS_CPU_SB1
416 select SYS_SUPPORTS_BIG_ENDIAN
417 select SYS_SUPPORTS_HIGHMEM
418 select SYS_SUPPORTS_LITTLE_ENDIAN
421 bool "Sibyte BCM91125E-Rhone"
422 depends on EXPERIMENTAL
425 select SIBYTE_BCM1125H
427 select SYS_HAS_CPU_SB1
428 select SYS_SUPPORTS_BIG_ENDIAN
429 select SYS_SUPPORTS_LITTLE_ENDIAN
432 bool "Sibyte BCM91250A-SWARM"
435 select NR_CPUS_DEFAULT_2
438 select SYS_HAS_CPU_SB1
439 select SYS_SUPPORTS_BIG_ENDIAN
440 select SYS_SUPPORTS_HIGHMEM
441 select SYS_SUPPORTS_KGDB
442 select SYS_SUPPORTS_LITTLE_ENDIAN
444 config SIBYTE_LITTLESUR
445 bool "Sibyte BCM91250C2-LittleSur"
446 depends on EXPERIMENTAL
449 select NR_CPUS_DEFAULT_2
452 select SYS_HAS_CPU_SB1
453 select SYS_SUPPORTS_BIG_ENDIAN
454 select SYS_SUPPORTS_HIGHMEM
455 select SYS_SUPPORTS_LITTLE_ENDIAN
457 config SIBYTE_SENTOSA
458 bool "Sibyte BCM91250E-Sentosa"
459 depends on EXPERIMENTAL
462 select NR_CPUS_DEFAULT_2
465 select SYS_HAS_CPU_SB1
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_LITTLE_ENDIAN
469 config SIBYTE_PTSWARM
470 bool "Sibyte BCM91250PT-PTSWARM"
471 depends on EXPERIMENTAL
474 select NR_CPUS_DEFAULT_2
477 select SYS_HAS_CPU_SB1
478 select SYS_SUPPORTS_BIG_ENDIAN
479 select SYS_SUPPORTS_HIGHMEM
480 select SYS_SUPPORTS_LITTLE_ENDIAN
483 bool "Sibyte BCM91480B-BigSur"
486 select NR_CPUS_DEFAULT_4
488 select SIBYTE_BCM1x80
490 select SYS_HAS_CPU_SB1
491 select SYS_SUPPORTS_BIG_ENDIAN
492 select SYS_SUPPORTS_LITTLE_ENDIAN
495 bool "SNI RM200/300/400"
496 select ARC if CPU_LITTLE_ENDIAN
497 select ARC32 if CPU_LITTLE_ENDIAN
498 select ARCH_MAY_HAVE_PC_FDC
500 select DMA_NONCOHERENT
501 select GENERIC_ISA_DMA
508 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
509 select SYS_HAS_CPU_R4X00
510 select SYS_HAS_CPU_R5000
511 select SYS_HAS_CPU_R10000
512 select R5000_CPU_SCACHE
513 select SYS_HAS_EARLY_PRINTK
514 select SYS_SUPPORTS_32BIT_KERNEL
515 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
516 select SYS_SUPPORTS_BIG_ENDIAN
517 select SYS_SUPPORTS_HIGHMEM
518 select SYS_SUPPORTS_LITTLE_ENDIAN
520 The SNI RM200/300/400 are MIPS-based machines manufactured by
521 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
522 Technology and now in turn merged with Fujitsu. Say Y here to
523 support this machine type.
525 config TOSHIBA_JMR3927
526 bool "Toshiba JMR-TX3927 board"
527 select DMA_NONCOHERENT
532 select SYS_HAS_CPU_TX39XX
533 select SYS_SUPPORTS_32BIT_KERNEL
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select SYS_SUPPORTS_BIG_ENDIAN
536 select GENERIC_HARDIRQS_NO__DO_IRQ
538 config TOSHIBA_RBTX4927
539 bool "Toshiba RBTX49[23]7 board"
540 select DMA_NONCOHERENT
541 select HAS_TXX9_SERIAL
545 select I8259 if TOSHIBA_FPCIB0
547 select SYS_HAS_CPU_TX49XX
548 select SYS_SUPPORTS_32BIT_KERNEL
549 select SYS_SUPPORTS_64BIT_KERNEL
550 select SYS_SUPPORTS_LITTLE_ENDIAN
551 select SYS_SUPPORTS_BIG_ENDIAN
552 select SYS_SUPPORTS_KGDB
553 select GENERIC_HARDIRQS_NO__DO_IRQ
555 This Toshiba board is based on the TX4927 processor. Say Y here to
556 support this machine type
558 config TOSHIBA_RBTX4938
559 bool "Toshiba RBTX4938 board"
560 select DMA_NONCOHERENT
561 select HAS_TXX9_SERIAL
566 select SYS_HAS_CPU_TX49XX
567 select SYS_SUPPORTS_32BIT_KERNEL
568 select SYS_SUPPORTS_LITTLE_ENDIAN
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_KGDB
571 select GENERIC_HARDIRQS_NO__DO_IRQ
574 This Toshiba board is based on the TX4938 processor. Say Y here to
575 support this machine type
578 bool "Wind River PPMC board"
581 select DMA_NONCOHERENT
583 select PCI_GT64XXX_PCI0
585 select SYS_HAS_CPU_MIPS32_R1
586 select SYS_HAS_CPU_MIPS32_R2
587 select SYS_HAS_CPU_MIPS64_R1
588 select SYS_HAS_CPU_NEVADA
589 select SYS_HAS_CPU_RM7000
590 select SYS_SUPPORTS_32BIT_KERNEL
591 select SYS_SUPPORTS_64BIT_KERNEL
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_LITTLE_ENDIAN
595 This enables support for the Wind River MIPS32 4KC PPMC evaluation
596 board, which is based on GT64120 bridge chip.
600 source "arch/mips/au1000/Kconfig"
601 source "arch/mips/jazz/Kconfig"
602 source "arch/mips/pmc-sierra/Kconfig"
603 source "arch/mips/sgi-ip27/Kconfig"
604 source "arch/mips/sibyte/Kconfig"
605 source "arch/mips/tx4927/Kconfig"
606 source "arch/mips/tx4938/Kconfig"
607 source "arch/mips/vr41xx/Kconfig"
611 config RWSEM_GENERIC_SPINLOCK
615 config RWSEM_XCHGADD_ALGORITHM
618 config ARCH_HAS_ILOG2_U32
622 config ARCH_HAS_ILOG2_U64
626 config GENERIC_FIND_NEXT_BIT
630 config GENERIC_HWEIGHT
634 config GENERIC_CALIBRATE_DELAY
642 config SCHED_NO_NO_OMIT_FRAME_POINTER
646 config GENERIC_HARDIRQS_NO__DO_IRQ
651 # Select some configuration options automatically based on user selections.
656 config ARCH_MAY_HAVE_PC_FDC
670 select DMA_NEED_PCI_MAP_STATE
672 config DMA_NONCOHERENT
674 select DMA_NEED_PCI_MAP_STATE
676 config DMA_NEED_PCI_MAP_STATE
680 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
681 depends on SYS_HAS_EARLY_PRINTK
684 This option enables special console drivers which allow the kernel
685 to print messages very early in the bootup process.
687 This is useful for kernel debugging when your machine crashes very
688 early before the console code is initialized. For normal operation,
689 it is not recommended because it looks ugly on some machines and
690 doesn't cooperate with an X server. You should normally say N here,
691 unless you want to debug such a crash.
693 config SYS_HAS_EARLY_PRINTK
696 config GENERIC_ISA_DMA
709 config MIPS_DISABLE_OBSOLETE_IDE
715 config GENERIC_ISA_DMA_SUPPORT_BROKEN
723 # Endianess selection. Sufficiently obscure so many users don't know what to
724 # answer,so we try hard to limit the available choices. Also the use of a
725 # choice statement should be more obvious to the user.
728 prompt "Endianess selection"
730 Some MIPS machines can be configured for either little or big endian
731 byte order. These modes require different kernels and a different
732 Linux distribution. In general there is one preferred byteorder for a
733 particular system but some systems are just as commonly used in the
734 one or the other endianness.
736 config CPU_BIG_ENDIAN
738 depends on SYS_SUPPORTS_BIG_ENDIAN
740 config CPU_LITTLE_ENDIAN
742 depends on SYS_SUPPORTS_LITTLE_ENDIAN
747 config SYS_SUPPORTS_APM_EMULATION
750 config SYS_SUPPORTS_BIG_ENDIAN
753 config SYS_SUPPORTS_LITTLE_ENDIAN
774 config MIPS_BOARDS_GEN
777 config PCI_GT64XXX_PCI0
780 config NO_EXCEPT_FILL
785 select HAS_TXX9_SERIAL
797 select DMA_NONCOHERENT
799 select SYS_HAS_CPU_MIPS32_R1
800 select SYS_HAS_EARLY_PRINTK
801 select SYS_SUPPORTS_32BIT_KERNEL
802 select GENERIC_HARDIRQS_NO__DO_IRQ
803 select SYS_SUPPORTS_KGDB
818 # Unfortunately not all GT64120 systems run the chip at the same clock.
819 # As the user for the clock rate and try to minimize the available options.
822 prompt "Galileo Chip Clock"
823 depends on MOMENCO_OCELOT
824 default SYSCLK_100 if MOMENCO_OCELOT
827 bool "100" if MOMENCO_OCELOT
837 config MIPS_L1_CACHE_SHIFT
839 default "4" if MACH_DECSTATION
840 default "7" if SGI_IP27 || SNI_RM
841 default "4" if PMC_MSP4200_EVAL
844 config HAVE_STD_PC_SERIAL_PORT
848 bool "ARC console support"
849 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
853 depends on MACH_JAZZ || SNI_RM || SGI_IP32
858 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
875 depends on SYS_HAS_CPU_LOONGSON2
876 select CPU_SUPPORTS_32BIT_KERNEL
877 select CPU_SUPPORTS_64BIT_KERNEL
878 select CPU_SUPPORTS_HIGHMEM
880 The Loongson 2E processor implements the MIPS III instruction set
881 with many extensions.
884 bool "MIPS32 Release 1"
885 depends on SYS_HAS_CPU_MIPS32_R1
887 select CPU_HAS_PREFETCH
888 select CPU_SUPPORTS_32BIT_KERNEL
889 select CPU_SUPPORTS_HIGHMEM
891 Choose this option to build a kernel for release 1 or later of the
892 MIPS32 architecture. Most modern embedded systems with a 32-bit
893 MIPS processor are based on a MIPS32 processor. If you know the
894 specific type of processor in your system, choose those that one
895 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
896 Release 2 of the MIPS32 architecture is available since several
897 years so chances are you even have a MIPS32 Release 2 processor
898 in which case you should choose CPU_MIPS32_R2 instead for better
902 bool "MIPS32 Release 2"
903 depends on SYS_HAS_CPU_MIPS32_R2
905 select CPU_HAS_PREFETCH
906 select CPU_SUPPORTS_32BIT_KERNEL
907 select CPU_SUPPORTS_HIGHMEM
909 Choose this option to build a kernel for release 2 or later of the
910 MIPS32 architecture. Most modern embedded systems with a 32-bit
911 MIPS processor are based on a MIPS32 processor. If you know the
912 specific type of processor in your system, choose those that one
913 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
916 bool "MIPS64 Release 1"
917 depends on SYS_HAS_CPU_MIPS64_R1
919 select CPU_HAS_PREFETCH
920 select CPU_SUPPORTS_32BIT_KERNEL
921 select CPU_SUPPORTS_64BIT_KERNEL
922 select CPU_SUPPORTS_HIGHMEM
924 Choose this option to build a kernel for release 1 or later of the
925 MIPS64 architecture. Many modern embedded systems with a 64-bit
926 MIPS processor are based on a MIPS64 processor. If you know the
927 specific type of processor in your system, choose those that one
928 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
929 Release 2 of the MIPS64 architecture is available since several
930 years so chances are you even have a MIPS64 Release 2 processor
931 in which case you should choose CPU_MIPS64_R2 instead for better
935 bool "MIPS64 Release 2"
936 depends on SYS_HAS_CPU_MIPS64_R2
938 select CPU_HAS_PREFETCH
939 select CPU_SUPPORTS_32BIT_KERNEL
940 select CPU_SUPPORTS_64BIT_KERNEL
941 select CPU_SUPPORTS_HIGHMEM
943 Choose this option to build a kernel for release 2 or later of the
944 MIPS64 architecture. Many modern embedded systems with a 64-bit
945 MIPS processor are based on a MIPS64 processor. If you know the
946 specific type of processor in your system, choose those that one
947 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
951 depends on SYS_HAS_CPU_R3000
953 select CPU_SUPPORTS_32BIT_KERNEL
954 select CPU_SUPPORTS_HIGHMEM
956 Please make sure to pick the right CPU type. Linux/MIPS is not
957 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
958 *not* work on R4000 machines and vice versa. However, since most
959 of the supported machines have an R4000 (or similar) CPU, R4x00
960 might be a safe bet. If the resulting kernel does not work,
961 try to recompile with R3000.
965 depends on SYS_HAS_CPU_TX39XX
966 select CPU_SUPPORTS_32BIT_KERNEL
970 depends on SYS_HAS_CPU_VR41XX
971 select CPU_SUPPORTS_32BIT_KERNEL
972 select CPU_SUPPORTS_64BIT_KERNEL
974 The options selects support for the NEC VR4100 series of processors.
975 Only choose this option if you have one of these processors as a
976 kernel built with this option will not run on any other type of
977 processor or vice versa.
981 depends on SYS_HAS_CPU_R4300
983 select CPU_SUPPORTS_32BIT_KERNEL
984 select CPU_SUPPORTS_64BIT_KERNEL
986 MIPS Technologies R4300-series processors.
990 depends on SYS_HAS_CPU_R4X00
992 select CPU_SUPPORTS_32BIT_KERNEL
993 select CPU_SUPPORTS_64BIT_KERNEL
995 MIPS Technologies R4000-series processors other than 4300, including
996 the R4000, R4400, R4600, and 4700.
1000 depends on SYS_HAS_CPU_TX49XX
1002 select CPU_HAS_PREFETCH
1003 select CPU_SUPPORTS_32BIT_KERNEL
1004 select CPU_SUPPORTS_64BIT_KERNEL
1008 depends on SYS_HAS_CPU_R5000
1010 select CPU_SUPPORTS_32BIT_KERNEL
1011 select CPU_SUPPORTS_64BIT_KERNEL
1013 MIPS Technologies R5000-series processors other than the Nevada.
1017 depends on SYS_HAS_CPU_R5432
1019 select CPU_SUPPORTS_32BIT_KERNEL
1020 select CPU_SUPPORTS_64BIT_KERNEL
1024 depends on EXPERIMENTAL
1026 depends on SYS_HAS_CPU_R6000
1027 select CPU_SUPPORTS_32BIT_KERNEL
1029 MIPS Technologies R6000 and R6000A series processors. Note these
1030 processors are extremely rare and the support for them is incomplete.
1034 depends on SYS_HAS_CPU_NEVADA
1036 select CPU_SUPPORTS_32BIT_KERNEL
1037 select CPU_SUPPORTS_64BIT_KERNEL
1039 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1043 depends on EXPERIMENTAL
1044 depends on SYS_HAS_CPU_R8000
1046 select CPU_HAS_PREFETCH
1047 select CPU_SUPPORTS_64BIT_KERNEL
1049 MIPS Technologies R8000 processors. Note these processors are
1050 uncommon and the support for them is incomplete.
1054 depends on SYS_HAS_CPU_R10000
1056 select CPU_HAS_PREFETCH
1057 select CPU_SUPPORTS_32BIT_KERNEL
1058 select CPU_SUPPORTS_64BIT_KERNEL
1059 select CPU_SUPPORTS_HIGHMEM
1061 MIPS Technologies R10000-series processors.
1065 depends on SYS_HAS_CPU_RM7000
1067 select CPU_HAS_PREFETCH
1068 select CPU_SUPPORTS_32BIT_KERNEL
1069 select CPU_SUPPORTS_64BIT_KERNEL
1070 select CPU_SUPPORTS_HIGHMEM
1074 depends on SYS_HAS_CPU_RM9000
1076 select CPU_HAS_PREFETCH
1077 select CPU_SUPPORTS_32BIT_KERNEL
1078 select CPU_SUPPORTS_64BIT_KERNEL
1079 select CPU_SUPPORTS_HIGHMEM
1080 select WEAK_ORDERING
1084 depends on SYS_HAS_CPU_SB1
1086 select CPU_SUPPORTS_32BIT_KERNEL
1087 select CPU_SUPPORTS_64BIT_KERNEL
1088 select CPU_SUPPORTS_HIGHMEM
1089 select WEAK_ORDERING
1093 config SYS_HAS_CPU_LOONGSON2
1096 config SYS_HAS_CPU_MIPS32_R1
1099 config SYS_HAS_CPU_MIPS32_R2
1102 config SYS_HAS_CPU_MIPS64_R1
1105 config SYS_HAS_CPU_MIPS64_R2
1108 config SYS_HAS_CPU_R3000
1111 config SYS_HAS_CPU_TX39XX
1114 config SYS_HAS_CPU_VR41XX
1117 config SYS_HAS_CPU_R4300
1120 config SYS_HAS_CPU_R4X00
1123 config SYS_HAS_CPU_TX49XX
1126 config SYS_HAS_CPU_R5000
1129 config SYS_HAS_CPU_R5432
1132 config SYS_HAS_CPU_R6000
1135 config SYS_HAS_CPU_NEVADA
1138 config SYS_HAS_CPU_R8000
1141 config SYS_HAS_CPU_R10000
1144 config SYS_HAS_CPU_RM7000
1147 config SYS_HAS_CPU_RM9000
1150 config SYS_HAS_CPU_SB1
1154 # CPU may reorder R->R, R->W, W->R, W->W
1155 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1157 config WEAK_ORDERING
1161 # CPU may reorder reads and writes beyond LL/SC
1162 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1164 config WEAK_REORDERING_BEYOND_LLSC
1169 # These two indicate any level of the MIPS32 and MIPS64 architecture
1173 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1177 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1180 # These two indicate the revision of the architecture, either Release 1 or Release 2
1184 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1188 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1190 config SYS_SUPPORTS_32BIT_KERNEL
1192 config SYS_SUPPORTS_64BIT_KERNEL
1194 config CPU_SUPPORTS_32BIT_KERNEL
1196 config CPU_SUPPORTS_64BIT_KERNEL
1203 prompt "Kernel code model"
1205 You should only select this option if you have a workload that
1206 actually benefits from 64-bit processing or if your machine has
1207 large memory. You will only be presented a single option in this
1208 menu if your system does not support both 32-bit and 64-bit kernels.
1211 bool "32-bit kernel"
1212 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1215 Select this option if you want to build a 32-bit kernel.
1217 bool "64-bit kernel"
1218 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1220 Select this option if you want to build a 64-bit kernel.
1225 prompt "Kernel page size"
1226 default PAGE_SIZE_4KB
1228 config PAGE_SIZE_4KB
1231 This option select the standard 4kB Linux page size. On some
1232 R3000-family processors this is the only available page size. Using
1233 4kB page size will minimize memory consumption and is therefore
1234 recommended for low memory systems.
1236 config PAGE_SIZE_8KB
1238 depends on EXPERIMENTAL && CPU_R8000
1240 Using 8kB page size will result in higher performance kernel at
1241 the price of higher memory consumption. This option is available
1242 only on the R8000 processor. Not that at the time of this writing
1243 this option is still high experimental; there are also issues with
1244 compatibility of user applications.
1246 config PAGE_SIZE_16KB
1248 depends on !CPU_R3000 && !CPU_TX39XX
1250 Using 16kB page size will result in higher performance kernel at
1251 the price of higher memory consumption. This option is available on
1252 all non-R3000 family processors. Note that you will need a suitable
1253 Linux distribution to support this.
1255 config PAGE_SIZE_64KB
1257 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1259 Using 64kB page size will result in higher performance kernel at
1260 the price of higher memory consumption. This option is available on
1261 all non-R3000 family processor. Not that at the time of this
1262 writing this option is still high experimental.
1269 config IP22_CPU_SCACHE
1274 # Support for a MIPS32 / MIPS64 style S-caches
1276 config MIPS_CPU_SCACHE
1280 config R5000_CPU_SCACHE
1284 config RM7000_CPU_SCACHE
1288 config SIBYTE_DMA_PAGEOPS
1289 bool "Use DMA to clear/copy pages"
1292 Instead of using the CPU to zero and copy pages, use a Data Mover
1293 channel. These DMA channels are otherwise unused by the standard
1294 SiByte Linux port. Seems to give a small performance benefit.
1296 config CPU_HAS_PREFETCH
1300 prompt "MIPS MT options"
1302 config MIPS_MT_DISABLED
1303 bool "Disable multithreading support."
1305 Use this option if your workload can't take advantage of
1306 MIPS hardware multithreading support. On systems that don't have
1307 the option of an MT-enabled processor this option will be the only
1308 option in this menu.
1311 bool "Use 1 TC on each available VPE for SMP"
1312 depends on SYS_SUPPORTS_MULTITHREADING
1313 select CPU_MIPSR2_IRQ_VI
1314 select CPU_MIPSR2_IRQ_EI
1315 select CPU_MIPSR2_SRS
1317 select NR_CPUS_DEFAULT_2
1319 select SYS_SUPPORTS_SMP
1321 This is a kernel model which is also known a VSMP or lately
1322 has been marketesed into SMVP.
1325 bool "SMTC: Use all TCs on all VPEs for SMP"
1326 depends on CPU_MIPS32_R2
1327 #depends on CPU_MIPS64_R2 # once there is hardware ...
1328 depends on SYS_SUPPORTS_MULTITHREADING
1329 select CPU_MIPSR2_IRQ_VI
1330 select CPU_MIPSR2_IRQ_EI
1331 select CPU_MIPSR2_SRS
1333 select NR_CPUS_DEFAULT_8
1335 select SYS_SUPPORTS_SMP
1337 This is a kernel model which is known a SMTC or lately has been
1338 marketesed into SMVP.
1345 config SYS_SUPPORTS_MULTITHREADING
1348 config MIPS_MT_FPAFF
1349 bool "Dynamic FPU affinity for FP-intensive threads"
1351 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1353 config MIPS_VPE_LOADER
1354 bool "VPE loader support."
1355 depends on SYS_SUPPORTS_MULTITHREADING
1356 select CPU_MIPSR2_IRQ_VI
1357 select CPU_MIPSR2_IRQ_EI
1358 select CPU_MIPSR2_SRS
1361 Includes a loader for loading an elf relocatable object
1362 onto another VPE and running it.
1364 config MIPS_MT_SMTC_INSTANT_REPLAY
1365 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1366 depends on MIPS_MT_SMTC && !PREEMPT
1369 SMTC pseudo-interrupts between TCs are deferred and queued
1370 if the target TC is interrupt-inhibited (IXMT). In the first
1371 SMTC prototypes, these queued IPIs were serviced on return
1372 to user mode, or on entry into the kernel idle loop. The
1373 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1374 processing, which adds runtime overhead (hence the option to turn
1375 it off), but ensures that IPIs are handled promptly even under
1376 heavy I/O interrupt load.
1378 config MIPS_MT_SMTC_IM_BACKSTOP
1379 bool "Use per-TC register bits as backstop for inhibited IM bits"
1380 depends on MIPS_MT_SMTC
1383 To support multiple TC microthreads acting as "CPUs" within
1384 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1385 during interrupt handling. To support legacy drivers and interrupt
1386 controller management code, SMTC has a "backstop" to track and
1387 if necessary restore the interrupt mask. This has some performance
1388 impact on interrupt service overhead. Disable it only if you know
1391 config MIPS_VPE_LOADER_TOM
1392 bool "Load VPE program into memory hidden from linux"
1393 depends on MIPS_VPE_LOADER
1396 The loader can use memory that is present but has been hidden from
1397 Linux using the kernel command line option "mem=xxMB". It's up to
1398 you to ensure the amount you put in the option and the space your
1399 program requires is less or equal to the amount physically present.
1401 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1402 config MIPS_VPE_APSP_API
1403 bool "Enable support for AP/SP API (RTLX)"
1404 depends on MIPS_VPE_LOADER
1407 config MIPS_APSP_KSPD
1409 depends on MIPS_VPE_APSP_API
1412 KSPD is a kernel daemon that accepts syscall requests from the SP
1413 side, actions them and returns the results. It also handles the
1414 "exit" syscall notifying other kernel modules the SP program is
1415 exiting. You probably want to say yes here.
1417 config SB1_PASS_1_WORKAROUNDS
1419 depends on CPU_SB1_PASS_1
1422 config SB1_PASS_2_WORKAROUNDS
1424 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1427 config SB1_PASS_2_1_WORKAROUNDS
1429 depends on CPU_SB1 && CPU_SB1_PASS_2
1432 config 64BIT_PHYS_ADDR
1438 config CPU_HAS_SMARTMIPS
1439 depends on SYS_SUPPORTS_SMARTMIPS
1440 bool "Support for the SmartMIPS ASE"
1442 SmartMIPS is a extension of the MIPS32 architecture aimed at
1443 increased security at both hardware and software level for
1444 smartcards. Enabling this option will allow proper use of the
1445 SmartMIPS instructions by Linux applications. However a kernel with
1446 this option will not work on a MIPS core without SmartMIPS core. If
1447 you don't know you probably don't have SmartMIPS and should say N
1453 config 64BIT_CONTEXT
1454 bool "Save 64bit integer registers"
1455 depends on 32BIT && CPU_LOONGSON2
1457 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1458 registers can still be accessed as 64bit, mainly for multimedia
1459 instructions. We must have all 64bit save/restored to make sure
1460 those instructions to get correct result.
1463 # Vectored interrupt mode is an R2 feature
1465 config CPU_MIPSR2_IRQ_VI
1469 # Extended interrupt mode is an R2 feature
1471 config CPU_MIPSR2_IRQ_EI
1475 # Shadow registers are an R2 feature
1477 config CPU_MIPSR2_SRS
1482 depends on !CPU_R3000
1486 # Use the generic interrupt handling code in kernel/irq/:
1488 config GENERIC_HARDIRQS
1492 config GENERIC_IRQ_PROBE
1500 # - Highmem only makes sense for the 32-bit kernel.
1501 # - The current highmem code will only work properly on physically indexed
1502 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1503 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1504 # moment we protect the user and offer the highmem option only on machines
1505 # where it's known to be safe. This will not offer highmem on a few systems
1506 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1507 # indexed CPUs but we're playing safe.
1508 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1509 # know they might have memory configurations that could make use of highmem
1513 bool "High Memory Support"
1514 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1516 config CPU_SUPPORTS_HIGHMEM
1519 config SYS_SUPPORTS_HIGHMEM
1522 config SYS_SUPPORTS_SMARTMIPS
1525 config ARCH_FLATMEM_ENABLE
1529 config ARCH_DISCONTIGMEM_ENABLE
1531 default y if SGI_IP27
1533 Say Y to support efficient handling of discontiguous physical memory,
1534 for architectures which are either NUMA (Non-Uniform Memory Access)
1535 or have huge holes in the physical address space for other reasons.
1536 See <file:Documentation/vm/numa> for more.
1538 config ARCH_SPARSEMEM_ENABLE
1540 select SPARSEMEM_STATIC
1544 depends on SYS_SUPPORTS_NUMA
1546 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1547 Access). This option improves performance on systems with more
1548 than two nodes; on two node systems it is generally better to
1549 leave it disabled; on single node systems disable this option
1552 config SYS_SUPPORTS_NUMA
1558 depends on NEED_MULTIPLE_NODES
1563 bool "Multi-Processing support"
1564 depends on SYS_SUPPORTS_SMP
1567 This enables support for systems with more than one CPU. If you have
1568 a system with only one CPU, like most personal computers, say N. If
1569 you have a system with more than one CPU, say Y.
1571 If you say N here, the kernel will run on single and multiprocessor
1572 machines, but will use only one CPU of a multiprocessor machine. If
1573 you say Y here, the kernel will run on many, but not all,
1574 singleprocessor machines. On a singleprocessor machine, the kernel
1575 will run faster if you say N here.
1577 People using multiprocessor machines who say Y here should also say
1578 Y to "Enhanced Real Time Clock Support", below.
1580 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1581 available at <http://www.tldp.org/docs.html#howto>.
1583 If you don't know what to do here, say N.
1585 config SYS_SUPPORTS_SMP
1588 config NR_CPUS_DEFAULT_1
1591 config NR_CPUS_DEFAULT_2
1594 config NR_CPUS_DEFAULT_4
1597 config NR_CPUS_DEFAULT_8
1600 config NR_CPUS_DEFAULT_16
1603 config NR_CPUS_DEFAULT_32
1606 config NR_CPUS_DEFAULT_64
1610 int "Maximum number of CPUs (2-64)"
1611 range 1 64 if NR_CPUS_DEFAULT_1
1613 default "1" if NR_CPUS_DEFAULT_1
1614 default "2" if NR_CPUS_DEFAULT_2
1615 default "4" if NR_CPUS_DEFAULT_4
1616 default "8" if NR_CPUS_DEFAULT_8
1617 default "16" if NR_CPUS_DEFAULT_16
1618 default "32" if NR_CPUS_DEFAULT_32
1619 default "64" if NR_CPUS_DEFAULT_64
1621 This allows you to specify the maximum number of CPUs which this
1622 kernel will support. The maximum supported value is 32 for 32-bit
1623 kernel and 64 for 64-bit kernels; the minimum value which makes
1624 sense is 1 for Qemu (useful only for kernel debugging purposes)
1625 and 2 for all others.
1627 This is purely to save memory - each supported CPU adds
1628 approximately eight kilobytes to the kernel image. For best
1629 performance should round up your number of processors to the next
1633 # Timer Interrupt Frequency Configuration
1637 prompt "Timer frequency"
1640 Allows the configuration of the timer frequency.
1643 bool "48 HZ" if SYS_SUPPORTS_48HZ
1646 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1649 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1652 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1655 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1658 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1661 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1665 config SYS_SUPPORTS_48HZ
1668 config SYS_SUPPORTS_100HZ
1671 config SYS_SUPPORTS_128HZ
1674 config SYS_SUPPORTS_250HZ
1677 config SYS_SUPPORTS_256HZ
1680 config SYS_SUPPORTS_1000HZ
1683 config SYS_SUPPORTS_1024HZ
1686 config SYS_SUPPORTS_ARBIT_HZ
1688 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1689 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1690 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1691 !SYS_SUPPORTS_1024HZ
1696 default 100 if HZ_100
1697 default 128 if HZ_128
1698 default 250 if HZ_250
1699 default 256 if HZ_256
1700 default 1000 if HZ_1000
1701 default 1024 if HZ_1024
1703 source "kernel/Kconfig.preempt"
1705 config MIPS_INSANE_LARGE
1706 bool "Support for large 64-bit configurations"
1707 depends on CPU_R10000 && 64BIT
1709 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1710 previous 64-bit processors which only supported 40 bit / 1TB. If you
1711 need processes of more than 1TB virtual address space, say Y here.
1712 This will result in additional memory usage, so it is not
1713 recommended for normal users.
1716 bool "Kexec system call (EXPERIMENTAL)"
1717 depends on EXPERIMENTAL
1719 kexec is a system call that implements the ability to shutdown your
1720 current kernel, and to start another kernel. It is like a reboot
1721 but it is independent of the system firmware. And like a reboot
1722 you can start any kernel with it, not just Linux.
1724 The name comes from the similiarity to the exec system call.
1726 It is an ongoing process to be certain the hardware in a machine
1727 is properly shutdown, so do not be surprised if this code does not
1728 initially work for you. It may help to enable device hotplugging
1729 support. As of this writing the exact hardware interface is
1730 strongly in flux, so no good recommendation can be made.
1733 bool "Enable seccomp to safely compute untrusted bytecode"
1737 This kernel feature is useful for number crunching applications
1738 that may need to compute untrusted bytecode during their
1739 execution. By using pipes or other transports made available to
1740 the process as file descriptors supporting the read/write
1741 syscalls, it's possible to isolate those applications in
1742 their own address space using seccomp. Once seccomp is
1743 enabled via /proc/<pid>/seccomp, it cannot be disabled
1744 and the task is only allowed to execute a few safe syscalls
1745 defined by each seccomp mode.
1747 If unsure, say Y. Only embedded should say N here.
1751 config RWSEM_GENERIC_SPINLOCK
1755 config LOCKDEP_SUPPORT
1759 config STACKTRACE_SUPPORT
1763 source "init/Kconfig"
1765 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1773 bool "Support for PCI controller"
1774 depends on HW_HAS_PCI
1776 Find out whether you have a PCI motherboard. PCI is the name of a
1777 bus system, i.e. the way the CPU talks to the other stuff inside
1778 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1781 The PCI-HOWTO, available from
1782 <http://www.tldp.org/docs.html#howto>, contains valuable
1783 information about which PCI hardware does work under Linux and which
1790 source "drivers/pci/Kconfig"
1793 # ISA support is now enabled via select. Too many systems still have the one
1794 # or other ISA chip on the board that users don't know about so don't expect
1795 # users to choose the right thing ...
1802 depends on HW_HAS_EISA
1804 select GENERIC_ISA_DMA
1806 The Extended Industry Standard Architecture (EISA) bus was
1807 developed as an open alternative to the IBM MicroChannel bus.
1809 The EISA bus provided some of the features of the IBM MicroChannel
1810 bus while maintaining backward compatibility with cards made for
1811 the older ISA bus. The EISA bus saw limited use between 1988 and
1812 1995 when it was made obsolete by the PCI bus.
1814 Say Y here if you are building a kernel for an EISA-based machine.
1818 source "drivers/eisa/Kconfig"
1821 bool "TURBOchannel support"
1822 depends on MACH_DECSTATION
1824 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1825 processors. Documentation on writing device drivers for TurboChannel
1827 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1830 # bool "Access.Bus support"
1840 source "drivers/pcmcia/Kconfig"
1842 source "drivers/pci/hotplug/Kconfig"
1846 menu "Executable file formats"
1848 source "fs/Kconfig.binfmt"
1854 bool "Use 64-bit ELF format for building"
1857 A 64-bit kernel is usually built using the 64-bit ELF binary object
1858 format as it's one that allows arbitrary 64-bit constructs. For
1859 kernels that are loaded within the KSEG compatibility segments the
1860 32-bit ELF format can optionally be used resulting in a somewhat
1861 smaller binary, but this option is not explicitly supported by the
1862 toolchain and since binutils 2.14 it does not even work at all.
1864 Say Y to use the 64-bit format or N to use the 32-bit one.
1869 bool "Include IRIX binary compatibility"
1870 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1872 config MIPS32_COMPAT
1873 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1876 Select this option if you want Linux/MIPS 32-bit binary
1877 compatibility. Since all software available for Linux/MIPS is
1878 currently 32-bit you should say Y here.
1882 depends on MIPS32_COMPAT
1885 config SYSVIPC_COMPAT
1887 depends on COMPAT && SYSVIPC
1891 bool "Kernel support for o32 binaries"
1892 depends on MIPS32_COMPAT
1894 Select this option if you want to run o32 binaries. These are pure
1895 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1896 existing binaries are in this format.
1901 bool "Kernel support for n32 binaries"
1902 depends on MIPS32_COMPAT
1904 Select this option if you want to run n32 binaries. These are
1905 64-bit binaries using 32-bit quantities for addressing and certain
1906 data that would normally be 64-bit. They are used in special
1913 default y if MIPS32_O32 || MIPS32_N32
1917 menu "Power management options"
1919 source "kernel/power/Kconfig"
1923 source "net/Kconfig"
1925 source "drivers/Kconfig"
1929 source "arch/mips/oprofile/Kconfig"
1931 source "arch/mips/Kconfig.debug"
1933 source "security/Kconfig"
1935 source "crypto/Kconfig"
1937 source "lib/Kconfig"