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 (EXPERIMENTAL)"
196 depends on EXPERIMENTAL
198 select DMA_NONCOHERENT
199 select SYS_HAS_EARLY_PRINTK
200 select MIPS_BOARDS_GEN
201 select SYS_HAS_CPU_MIPS32_R1
202 select SYS_HAS_CPU_MIPS32_R2
203 select SYS_HAS_CPU_MIPS64_R1
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
206 select SYS_SUPPORTS_BIG_ENDIAN
207 select SYS_SUPPORTS_LITTLE_ENDIAN
208 select SYS_SUPPORTS_SMARTMIPS
210 This enables support for the MIPS Technologies SEAD evaluation
214 bool 'MIPS simulator (MIPSsim)'
215 select DMA_NONCOHERENT
216 select SYS_HAS_EARLY_PRINTK
219 select SYS_HAS_CPU_MIPS32_R1
220 select SYS_HAS_CPU_MIPS32_R2
221 select SYS_HAS_EARLY_PRINTK
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_BIG_ENDIAN
224 select SYS_SUPPORTS_MULTITHREADING
225 select SYS_SUPPORTS_LITTLE_ENDIAN
227 This option enables support for MIPS Technologies MIPSsim software
231 bool "NEC EMMA2RH Mark-eins"
232 select DMA_NONCOHERENT
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_LITTLE_ENDIAN
239 select SYS_HAS_CPU_R5000
241 This enables support for the R5432-based NEC Mark-eins
242 boards with R5500 CPU.
245 bool "NEC VR4100 series based machines"
246 select SYS_HAS_CPU_VR41XX
247 select GENERIC_HARDIRQS_NO__DO_IRQ
250 bool "Philips PNX8550 based JBS board"
252 select SYS_SUPPORTS_LITTLE_ENDIAN
254 config PNX8550_STB810
255 bool "Philips PNX8550 based STB810 board"
257 select SYS_SUPPORTS_LITTLE_ENDIAN
260 bool "PMC-Sierra MSP chipsets"
261 depends on EXPERIMENTAL
262 select DMA_NONCOHERENT
264 select NO_EXCEPT_FILL
266 select SYS_HAS_CPU_MIPS32_R1
267 select SYS_HAS_CPU_MIPS32_R2
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_SUPPORTS_KGDB
273 select SERIAL_8250_CONSOLE
275 This adds support for the PMC-Sierra family of Multi-Service
276 Processor System-On-A-Chips. These parts include a number
277 of integrated peripherals, interfaces and DSPs in addition to
278 a variety of MIPS cores.
281 bool "PMC-Sierra Yosemite eval board"
288 select SYS_HAS_CPU_RM9000
289 select SYS_HAS_EARLY_PRINTK
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_64BIT_KERNEL
292 select SYS_SUPPORTS_BIG_ENDIAN
293 select SYS_SUPPORTS_HIGHMEM
294 select SYS_SUPPORTS_KGDB
295 select SYS_SUPPORTS_SMP
297 Yosemite is an evaluation board for the RM9000x2 processor
298 manufactured by PMC-Sierra.
303 select GENERIC_ISA_DMA
304 select HAVE_STD_PC_SERIAL_PORT
309 select SYS_HAS_CPU_MIPS32_R1
310 select SYS_SUPPORTS_32BIT_KERNEL
311 select SYS_SUPPORTS_BIG_ENDIAN
312 select SYS_SUPPORTS_LITTLE_ENDIAN
313 select ARCH_SPARSEMEM_ENABLE
314 select GENERIC_HARDIRQS_NO__DO_IRQ
315 select NR_CPUS_DEFAULT_1
316 select SYS_SUPPORTS_SMP
318 Qemu is a software emulator which among other architectures also
319 can simulate a MIPS32 4Kc system. This patch adds support for the
320 system architecture that currently is being simulated by Qemu. It
321 will eventually be removed again when Qemu has the capability to
322 simulate actual MIPS hardware platforms. More information on Qemu
323 can be found at http://www.linux-mips.org/wiki/Qemu.
326 bool "SGI IP22 (Indy/Indigo2)"
330 select DMA_NONCOHERENT
332 select IP22_CPU_SCACHE
334 select GENERIC_ISA_DMA_SUPPORT_BROKEN
336 select SYS_HAS_CPU_R4X00
337 select SYS_HAS_CPU_R5000
338 select SYS_HAS_EARLY_PRINTK
339 select SYS_SUPPORTS_32BIT_KERNEL
340 select SYS_SUPPORTS_64BIT_KERNEL
341 select SYS_SUPPORTS_BIG_ENDIAN
343 This are the SGI Indy, Challenge S and Indigo2, as well as certain
344 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
345 that runs on these, say Y here.
348 bool "SGI IP27 (Origin200/2000)"
353 select SYS_HAS_EARLY_PRINTK
355 select NR_CPUS_DEFAULT_64
357 select SYS_HAS_CPU_R10000
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_BIG_ENDIAN
360 select SYS_SUPPORTS_KGDB
361 select SYS_SUPPORTS_NUMA
362 select SYS_SUPPORTS_SMP
363 select GENERIC_HARDIRQS_NO__DO_IRQ
365 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
366 workstations. To compile a Linux kernel that runs on these, say Y
374 select DMA_NONCOHERENT
376 select R5000_CPU_SCACHE
377 select RM7000_CPU_SCACHE
378 select SYS_HAS_CPU_R5000
379 select SYS_HAS_CPU_R10000 if BROKEN
380 select SYS_HAS_CPU_RM7000
381 select SYS_HAS_CPU_NEVADA
382 select SYS_SUPPORTS_64BIT_KERNEL
383 select SYS_SUPPORTS_BIG_ENDIAN
385 If you want this kernel to run on SGI O2 workstation, say Y here.
388 bool "Sibyte BCM91120C-CRhine"
389 depends on EXPERIMENTAL
392 select SIBYTE_BCM1120
394 select SYS_HAS_CPU_SB1
395 select SYS_SUPPORTS_BIG_ENDIAN
396 select SYS_SUPPORTS_LITTLE_ENDIAN
399 bool "Sibyte BCM91120x-Carmel"
400 depends on EXPERIMENTAL
403 select SIBYTE_BCM1120
405 select SYS_HAS_CPU_SB1
406 select SYS_SUPPORTS_BIG_ENDIAN
407 select SYS_SUPPORTS_LITTLE_ENDIAN
410 bool "Sibyte BCM91125C-CRhone"
411 depends on EXPERIMENTAL
414 select SIBYTE_BCM1125
416 select SYS_HAS_CPU_SB1
417 select SYS_SUPPORTS_BIG_ENDIAN
418 select SYS_SUPPORTS_HIGHMEM
419 select SYS_SUPPORTS_LITTLE_ENDIAN
422 bool "Sibyte BCM91125E-Rhone"
423 depends on EXPERIMENTAL
426 select SIBYTE_BCM1125H
428 select SYS_HAS_CPU_SB1
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_LITTLE_ENDIAN
433 bool "Sibyte BCM91250A-SWARM"
436 select NR_CPUS_DEFAULT_2
439 select SYS_HAS_CPU_SB1
440 select SYS_SUPPORTS_BIG_ENDIAN
441 select SYS_SUPPORTS_HIGHMEM
442 select SYS_SUPPORTS_KGDB
443 select SYS_SUPPORTS_LITTLE_ENDIAN
445 config SIBYTE_LITTLESUR
446 bool "Sibyte BCM91250C2-LittleSur"
447 depends on EXPERIMENTAL
450 select NR_CPUS_DEFAULT_2
453 select SYS_HAS_CPU_SB1
454 select SYS_SUPPORTS_BIG_ENDIAN
455 select SYS_SUPPORTS_HIGHMEM
456 select SYS_SUPPORTS_LITTLE_ENDIAN
458 config SIBYTE_SENTOSA
459 bool "Sibyte BCM91250E-Sentosa"
460 depends on EXPERIMENTAL
463 select NR_CPUS_DEFAULT_2
466 select SYS_HAS_CPU_SB1
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_LITTLE_ENDIAN
470 config SIBYTE_PTSWARM
471 bool "Sibyte BCM91250PT-PTSWARM"
472 depends on EXPERIMENTAL
475 select NR_CPUS_DEFAULT_2
478 select SYS_HAS_CPU_SB1
479 select SYS_SUPPORTS_BIG_ENDIAN
480 select SYS_SUPPORTS_HIGHMEM
481 select SYS_SUPPORTS_LITTLE_ENDIAN
484 bool "Sibyte BCM91480B-BigSur"
487 select NR_CPUS_DEFAULT_4
489 select SIBYTE_BCM1x80
491 select SYS_HAS_CPU_SB1
492 select SYS_SUPPORTS_BIG_ENDIAN
493 select SYS_SUPPORTS_LITTLE_ENDIAN
496 bool "SNI RM200/300/400"
497 select ARC if CPU_LITTLE_ENDIAN
498 select ARC32 if CPU_LITTLE_ENDIAN
499 select ARCH_MAY_HAVE_PC_FDC
501 select DMA_NONCOHERENT
502 select GENERIC_ISA_DMA
509 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
510 select SYS_HAS_CPU_R4X00
511 select SYS_HAS_CPU_R5000
512 select SYS_HAS_CPU_R10000
513 select R5000_CPU_SCACHE
514 select SYS_HAS_EARLY_PRINTK
515 select SYS_SUPPORTS_32BIT_KERNEL
516 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_LITTLE_ENDIAN
521 The SNI RM200/300/400 are MIPS-based machines manufactured by
522 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
523 Technology and now in turn merged with Fujitsu. Say Y here to
524 support this machine type.
526 config TOSHIBA_JMR3927
527 bool "Toshiba JMR-TX3927 board"
528 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 SYS_HAS_CPU_TX49XX
546 select SYS_SUPPORTS_32BIT_KERNEL
547 select SYS_SUPPORTS_64BIT_KERNEL
548 select SYS_SUPPORTS_LITTLE_ENDIAN
549 select SYS_SUPPORTS_BIG_ENDIAN
550 select SYS_SUPPORTS_KGDB
551 select GENERIC_HARDIRQS_NO__DO_IRQ
553 This Toshiba board is based on the TX4927 processor. Say Y here to
554 support this machine type
556 config TOSHIBA_RBTX4938
557 bool "Toshiba RBTX4938 board"
558 select HAVE_STD_PC_SERIAL_PORT
559 select DMA_NONCOHERENT
560 select GENERIC_ISA_DMA
561 select HAS_TXX9_SERIAL
565 select SYS_HAS_CPU_TX49XX
566 select SYS_SUPPORTS_32BIT_KERNEL
567 select SYS_SUPPORTS_LITTLE_ENDIAN
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_KGDB
570 select GENERIC_HARDIRQS_NO__DO_IRQ
573 This Toshiba board is based on the TX4938 processor. Say Y here to
574 support this machine type
577 bool "Wind River PPMC board"
580 select DMA_NONCOHERENT
582 select PCI_GT64XXX_PCI0
584 select SYS_HAS_CPU_MIPS32_R1
585 select SYS_HAS_CPU_MIPS32_R2
586 select SYS_HAS_CPU_MIPS64_R1
587 select SYS_HAS_CPU_NEVADA
588 select SYS_HAS_CPU_RM7000
589 select SYS_SUPPORTS_32BIT_KERNEL
590 select SYS_SUPPORTS_64BIT_KERNEL
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_LITTLE_ENDIAN
594 This enables support for the Wind River MIPS32 4KC PPMC evaluation
595 board, which is based on GT64120 bridge chip.
599 source "arch/mips/au1000/Kconfig"
600 source "arch/mips/jazz/Kconfig"
601 source "arch/mips/pmc-sierra/Kconfig"
602 source "arch/mips/sgi-ip27/Kconfig"
603 source "arch/mips/sibyte/Kconfig"
604 source "arch/mips/tx4927/Kconfig"
605 source "arch/mips/tx4938/Kconfig"
606 source "arch/mips/vr41xx/Kconfig"
610 config RWSEM_GENERIC_SPINLOCK
614 config RWSEM_XCHGADD_ALGORITHM
617 config ARCH_HAS_ILOG2_U32
621 config ARCH_HAS_ILOG2_U64
625 config GENERIC_FIND_NEXT_BIT
629 config GENERIC_HWEIGHT
633 config GENERIC_CALIBRATE_DELAY
641 config SCHED_NO_NO_OMIT_FRAME_POINTER
645 config GENERIC_HARDIRQS_NO__DO_IRQ
650 # Select some configuration options automatically based on user selections.
655 config ARCH_MAY_HAVE_PC_FDC
669 select DMA_NEED_PCI_MAP_STATE
671 config DMA_NONCOHERENT
673 select DMA_NEED_PCI_MAP_STATE
675 config DMA_NEED_PCI_MAP_STATE
679 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
680 depends on SYS_HAS_EARLY_PRINTK
683 This option enables special console drivers which allow the kernel
684 to print messages very early in the bootup process.
686 This is useful for kernel debugging when your machine crashes very
687 early before the console code is initialized. For normal operation,
688 it is not recommended because it looks ugly on some machines and
689 doesn't cooperate with an X server. You should normally say N here,
690 unless you want to debug such a crash.
692 config SYS_HAS_EARLY_PRINTK
695 config GENERIC_ISA_DMA
708 config MIPS_DISABLE_OBSOLETE_IDE
714 config GENERIC_ISA_DMA_SUPPORT_BROKEN
722 # Endianess selection. Sufficiently obscure so many users don't know what to
723 # answer,so we try hard to limit the available choices. Also the use of a
724 # choice statement should be more obvious to the user.
727 prompt "Endianess selection"
729 Some MIPS machines can be configured for either little or big endian
730 byte order. These modes require different kernels and a different
731 Linux distribution. In general there is one preferred byteorder for a
732 particular system but some systems are just as commonly used in the
733 one or the other endianness.
735 config CPU_BIG_ENDIAN
737 depends on SYS_SUPPORTS_BIG_ENDIAN
739 config CPU_LITTLE_ENDIAN
741 depends on SYS_SUPPORTS_LITTLE_ENDIAN
746 config SYS_SUPPORTS_APM_EMULATION
749 config SYS_SUPPORTS_BIG_ENDIAN
752 config SYS_SUPPORTS_LITTLE_ENDIAN
770 config MIPS_BOARDS_GEN
773 config PCI_GT64XXX_PCI0
776 config NO_EXCEPT_FILL
781 select HAS_TXX9_SERIAL
793 select DMA_NONCOHERENT
795 select SYS_HAS_CPU_MIPS32_R1
796 select SYS_HAS_EARLY_PRINTK
797 select SYS_SUPPORTS_32BIT_KERNEL
798 select GENERIC_HARDIRQS_NO__DO_IRQ
799 select SYS_SUPPORTS_KGDB
814 # Unfortunately not all GT64120 systems run the chip at the same clock.
815 # As the user for the clock rate and try to minimize the available options.
818 prompt "Galileo Chip Clock"
819 depends on MOMENCO_OCELOT
820 default SYSCLK_100 if MOMENCO_OCELOT
823 bool "100" if MOMENCO_OCELOT
833 config MIPS_L1_CACHE_SHIFT
835 default "4" if MACH_DECSTATION
836 default "7" if SGI_IP27 || SNI_RM
837 default "4" if PMC_MSP4200_EVAL
840 config HAVE_STD_PC_SERIAL_PORT
844 bool "ARC console support"
845 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
849 depends on MACH_JAZZ || SNI_RM || SGI_IP32
854 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
871 depends on SYS_HAS_CPU_LOONGSON2
872 select CPU_SUPPORTS_32BIT_KERNEL
873 select CPU_SUPPORTS_64BIT_KERNEL
874 select CPU_SUPPORTS_HIGHMEM
876 The Loongson 2E processor implements the MIPS III instruction set
877 with many extensions.
880 bool "MIPS32 Release 1"
881 depends on SYS_HAS_CPU_MIPS32_R1
883 select CPU_HAS_PREFETCH
884 select CPU_SUPPORTS_32BIT_KERNEL
885 select CPU_SUPPORTS_HIGHMEM
887 Choose this option to build a kernel for release 1 or later of the
888 MIPS32 architecture. Most modern embedded systems with a 32-bit
889 MIPS processor are based on a MIPS32 processor. If you know the
890 specific type of processor in your system, choose those that one
891 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
892 Release 2 of the MIPS32 architecture is available since several
893 years so chances are you even have a MIPS32 Release 2 processor
894 in which case you should choose CPU_MIPS32_R2 instead for better
898 bool "MIPS32 Release 2"
899 depends on SYS_HAS_CPU_MIPS32_R2
901 select CPU_HAS_PREFETCH
902 select CPU_SUPPORTS_32BIT_KERNEL
903 select CPU_SUPPORTS_HIGHMEM
905 Choose this option to build a kernel for release 2 or later of the
906 MIPS32 architecture. Most modern embedded systems with a 32-bit
907 MIPS processor are based on a MIPS32 processor. If you know the
908 specific type of processor in your system, choose those that one
909 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
912 bool "MIPS64 Release 1"
913 depends on SYS_HAS_CPU_MIPS64_R1
915 select CPU_HAS_PREFETCH
916 select CPU_SUPPORTS_32BIT_KERNEL
917 select CPU_SUPPORTS_64BIT_KERNEL
918 select CPU_SUPPORTS_HIGHMEM
920 Choose this option to build a kernel for release 1 or later of the
921 MIPS64 architecture. Many modern embedded systems with a 64-bit
922 MIPS processor are based on a MIPS64 processor. If you know the
923 specific type of processor in your system, choose those that one
924 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
925 Release 2 of the MIPS64 architecture is available since several
926 years so chances are you even have a MIPS64 Release 2 processor
927 in which case you should choose CPU_MIPS64_R2 instead for better
931 bool "MIPS64 Release 2"
932 depends on SYS_HAS_CPU_MIPS64_R2
934 select CPU_HAS_PREFETCH
935 select CPU_SUPPORTS_32BIT_KERNEL
936 select CPU_SUPPORTS_64BIT_KERNEL
937 select CPU_SUPPORTS_HIGHMEM
939 Choose this option to build a kernel for release 2 or later of the
940 MIPS64 architecture. Many modern embedded systems with a 64-bit
941 MIPS processor are based on a MIPS64 processor. If you know the
942 specific type of processor in your system, choose those that one
943 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
947 depends on SYS_HAS_CPU_R3000
949 select CPU_SUPPORTS_32BIT_KERNEL
950 select CPU_SUPPORTS_HIGHMEM
952 Please make sure to pick the right CPU type. Linux/MIPS is not
953 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
954 *not* work on R4000 machines and vice versa. However, since most
955 of the supported machines have an R4000 (or similar) CPU, R4x00
956 might be a safe bet. If the resulting kernel does not work,
957 try to recompile with R3000.
961 depends on SYS_HAS_CPU_TX39XX
962 select CPU_SUPPORTS_32BIT_KERNEL
966 depends on SYS_HAS_CPU_VR41XX
967 select CPU_SUPPORTS_32BIT_KERNEL
968 select CPU_SUPPORTS_64BIT_KERNEL
970 The options selects support for the NEC VR4100 series of processors.
971 Only choose this option if you have one of these processors as a
972 kernel built with this option will not run on any other type of
973 processor or vice versa.
977 depends on SYS_HAS_CPU_R4300
979 select CPU_SUPPORTS_32BIT_KERNEL
980 select CPU_SUPPORTS_64BIT_KERNEL
982 MIPS Technologies R4300-series processors.
986 depends on SYS_HAS_CPU_R4X00
988 select CPU_SUPPORTS_32BIT_KERNEL
989 select CPU_SUPPORTS_64BIT_KERNEL
991 MIPS Technologies R4000-series processors other than 4300, including
992 the R4000, R4400, R4600, and 4700.
996 depends on SYS_HAS_CPU_TX49XX
998 select CPU_HAS_PREFETCH
999 select CPU_SUPPORTS_32BIT_KERNEL
1000 select CPU_SUPPORTS_64BIT_KERNEL
1004 depends on SYS_HAS_CPU_R5000
1006 select CPU_SUPPORTS_32BIT_KERNEL
1007 select CPU_SUPPORTS_64BIT_KERNEL
1009 MIPS Technologies R5000-series processors other than the Nevada.
1013 depends on SYS_HAS_CPU_R5432
1015 select CPU_SUPPORTS_32BIT_KERNEL
1016 select CPU_SUPPORTS_64BIT_KERNEL
1020 depends on EXPERIMENTAL
1022 depends on SYS_HAS_CPU_R6000
1023 select CPU_SUPPORTS_32BIT_KERNEL
1025 MIPS Technologies R6000 and R6000A series processors. Note these
1026 processors are extremely rare and the support for them is incomplete.
1030 depends on SYS_HAS_CPU_NEVADA
1032 select CPU_SUPPORTS_32BIT_KERNEL
1033 select CPU_SUPPORTS_64BIT_KERNEL
1035 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1039 depends on EXPERIMENTAL
1040 depends on SYS_HAS_CPU_R8000
1042 select CPU_HAS_PREFETCH
1043 select CPU_SUPPORTS_64BIT_KERNEL
1045 MIPS Technologies R8000 processors. Note these processors are
1046 uncommon and the support for them is incomplete.
1050 depends on SYS_HAS_CPU_R10000
1052 select CPU_HAS_PREFETCH
1053 select CPU_SUPPORTS_32BIT_KERNEL
1054 select CPU_SUPPORTS_64BIT_KERNEL
1055 select CPU_SUPPORTS_HIGHMEM
1057 MIPS Technologies R10000-series processors.
1061 depends on SYS_HAS_CPU_RM7000
1063 select CPU_HAS_PREFETCH
1064 select CPU_SUPPORTS_32BIT_KERNEL
1065 select CPU_SUPPORTS_64BIT_KERNEL
1066 select CPU_SUPPORTS_HIGHMEM
1070 depends on SYS_HAS_CPU_RM9000
1072 select CPU_HAS_PREFETCH
1073 select CPU_SUPPORTS_32BIT_KERNEL
1074 select CPU_SUPPORTS_64BIT_KERNEL
1075 select CPU_SUPPORTS_HIGHMEM
1076 select WEAK_ORDERING
1080 depends on SYS_HAS_CPU_SB1
1082 select CPU_SUPPORTS_32BIT_KERNEL
1083 select CPU_SUPPORTS_64BIT_KERNEL
1084 select CPU_SUPPORTS_HIGHMEM
1085 select WEAK_ORDERING
1089 config SYS_HAS_CPU_LOONGSON2
1092 config SYS_HAS_CPU_MIPS32_R1
1095 config SYS_HAS_CPU_MIPS32_R2
1098 config SYS_HAS_CPU_MIPS64_R1
1101 config SYS_HAS_CPU_MIPS64_R2
1104 config SYS_HAS_CPU_R3000
1107 config SYS_HAS_CPU_TX39XX
1110 config SYS_HAS_CPU_VR41XX
1113 config SYS_HAS_CPU_R4300
1116 config SYS_HAS_CPU_R4X00
1119 config SYS_HAS_CPU_TX49XX
1122 config SYS_HAS_CPU_R5000
1125 config SYS_HAS_CPU_R5432
1128 config SYS_HAS_CPU_R6000
1131 config SYS_HAS_CPU_NEVADA
1134 config SYS_HAS_CPU_R8000
1137 config SYS_HAS_CPU_R10000
1140 config SYS_HAS_CPU_RM7000
1143 config SYS_HAS_CPU_RM9000
1146 config SYS_HAS_CPU_SB1
1150 # CPU may reorder R->R, R->W, W->R, W->W
1151 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1153 config WEAK_ORDERING
1157 # CPU may reorder reads and writes beyond LL/SC
1158 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1160 config WEAK_REORDERING_BEYOND_LLSC
1165 # These two indicate any level of the MIPS32 and MIPS64 architecture
1169 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1173 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1176 # These two indicate the revision of the architecture, either Release 1 or Release 2
1180 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1184 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1186 config SYS_SUPPORTS_32BIT_KERNEL
1188 config SYS_SUPPORTS_64BIT_KERNEL
1190 config CPU_SUPPORTS_32BIT_KERNEL
1192 config CPU_SUPPORTS_64BIT_KERNEL
1199 prompt "Kernel code model"
1201 You should only select this option if you have a workload that
1202 actually benefits from 64-bit processing or if your machine has
1203 large memory. You will only be presented a single option in this
1204 menu if your system does not support both 32-bit and 64-bit kernels.
1207 bool "32-bit kernel"
1208 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1211 Select this option if you want to build a 32-bit kernel.
1213 bool "64-bit kernel"
1214 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1216 Select this option if you want to build a 64-bit kernel.
1221 prompt "Kernel page size"
1222 default PAGE_SIZE_4KB
1224 config PAGE_SIZE_4KB
1227 This option select the standard 4kB Linux page size. On some
1228 R3000-family processors this is the only available page size. Using
1229 4kB page size will minimize memory consumption and is therefore
1230 recommended for low memory systems.
1232 config PAGE_SIZE_8KB
1234 depends on EXPERIMENTAL && CPU_R8000
1236 Using 8kB page size will result in higher performance kernel at
1237 the price of higher memory consumption. This option is available
1238 only on the R8000 processor. Not that at the time of this writing
1239 this option is still high experimental; there are also issues with
1240 compatibility of user applications.
1242 config PAGE_SIZE_16KB
1244 depends on !CPU_R3000 && !CPU_TX39XX
1246 Using 16kB page size will result in higher performance kernel at
1247 the price of higher memory consumption. This option is available on
1248 all non-R3000 family processors. Note that you will need a suitable
1249 Linux distribution to support this.
1251 config PAGE_SIZE_64KB
1253 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1255 Using 64kB page size will result in higher performance kernel at
1256 the price of higher memory consumption. This option is available on
1257 all non-R3000 family processor. Not that at the time of this
1258 writing this option is still high experimental.
1265 config IP22_CPU_SCACHE
1270 # Support for a MIPS32 / MIPS64 style S-caches
1272 config MIPS_CPU_SCACHE
1276 config R5000_CPU_SCACHE
1280 config RM7000_CPU_SCACHE
1284 config SIBYTE_DMA_PAGEOPS
1285 bool "Use DMA to clear/copy pages"
1288 Instead of using the CPU to zero and copy pages, use a Data Mover
1289 channel. These DMA channels are otherwise unused by the standard
1290 SiByte Linux port. Seems to give a small performance benefit.
1292 config CPU_HAS_PREFETCH
1296 prompt "MIPS MT options"
1298 config MIPS_MT_DISABLED
1299 bool "Disable multithreading support."
1301 Use this option if your workload can't take advantage of
1302 MIPS hardware multithreading support. On systems that don't have
1303 the option of an MT-enabled processor this option will be the only
1304 option in this menu.
1307 bool "Use 1 TC on each available VPE for SMP"
1308 depends on SYS_SUPPORTS_MULTITHREADING
1309 select CPU_MIPSR2_IRQ_VI
1310 select CPU_MIPSR2_IRQ_EI
1311 select CPU_MIPSR2_SRS
1313 select NR_CPUS_DEFAULT_2
1315 select SYS_SUPPORTS_SMP
1317 This is a kernel model which is also known a VSMP or lately
1318 has been marketesed into SMVP.
1321 bool "SMTC: Use all TCs on all VPEs for SMP"
1322 depends on CPU_MIPS32_R2
1323 #depends on CPU_MIPS64_R2 # once there is hardware ...
1324 depends on SYS_SUPPORTS_MULTITHREADING
1325 select CPU_MIPSR2_IRQ_VI
1326 select CPU_MIPSR2_IRQ_EI
1327 select CPU_MIPSR2_SRS
1329 select NR_CPUS_DEFAULT_8
1331 select SYS_SUPPORTS_SMP
1333 This is a kernel model which is known a SMTC or lately has been
1334 marketesed into SMVP.
1341 config SYS_SUPPORTS_MULTITHREADING
1344 config MIPS_MT_FPAFF
1345 bool "Dynamic FPU affinity for FP-intensive threads"
1347 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1349 config MIPS_VPE_LOADER
1350 bool "VPE loader support."
1351 depends on SYS_SUPPORTS_MULTITHREADING
1352 select CPU_MIPSR2_IRQ_VI
1353 select CPU_MIPSR2_IRQ_EI
1354 select CPU_MIPSR2_SRS
1357 Includes a loader for loading an elf relocatable object
1358 onto another VPE and running it.
1360 config MIPS_MT_SMTC_INSTANT_REPLAY
1361 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1362 depends on MIPS_MT_SMTC && !PREEMPT
1365 SMTC pseudo-interrupts between TCs are deferred and queued
1366 if the target TC is interrupt-inhibited (IXMT). In the first
1367 SMTC prototypes, these queued IPIs were serviced on return
1368 to user mode, or on entry into the kernel idle loop. The
1369 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1370 processing, which adds runtime overhead (hence the option to turn
1371 it off), but ensures that IPIs are handled promptly even under
1372 heavy I/O interrupt load.
1374 config MIPS_MT_SMTC_IM_BACKSTOP
1375 bool "Use per-TC register bits as backstop for inhibited IM bits"
1376 depends on MIPS_MT_SMTC
1379 To support multiple TC microthreads acting as "CPUs" within
1380 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1381 during interrupt handling. To support legacy drivers and interrupt
1382 controller management code, SMTC has a "backstop" to track and
1383 if necessary restore the interrupt mask. This has some performance
1384 impact on interrupt service overhead. Disable it only if you know
1387 config MIPS_VPE_LOADER_TOM
1388 bool "Load VPE program into memory hidden from linux"
1389 depends on MIPS_VPE_LOADER
1392 The loader can use memory that is present but has been hidden from
1393 Linux using the kernel command line option "mem=xxMB". It's up to
1394 you to ensure the amount you put in the option and the space your
1395 program requires is less or equal to the amount physically present.
1397 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1398 config MIPS_VPE_APSP_API
1399 bool "Enable support for AP/SP API (RTLX)"
1400 depends on MIPS_VPE_LOADER
1403 config MIPS_APSP_KSPD
1405 depends on MIPS_VPE_APSP_API
1408 KSPD is a kernel daemon that accepts syscall requests from the SP
1409 side, actions them and returns the results. It also handles the
1410 "exit" syscall notifying other kernel modules the SP program is
1411 exiting. You probably want to say yes here.
1413 config SB1_PASS_1_WORKAROUNDS
1415 depends on CPU_SB1_PASS_1
1418 config SB1_PASS_2_WORKAROUNDS
1420 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1423 config SB1_PASS_2_1_WORKAROUNDS
1425 depends on CPU_SB1 && CPU_SB1_PASS_2
1428 config 64BIT_PHYS_ADDR
1434 config CPU_HAS_SMARTMIPS
1435 depends on SYS_SUPPORTS_SMARTMIPS
1436 bool "Support for the SmartMIPS ASE"
1438 SmartMIPS is a extension of the MIPS32 architecture aimed at
1439 increased security at both hardware and software level for
1440 smartcards. Enabling this option will allow proper use of the
1441 SmartMIPS instructions by Linux applications. However a kernel with
1442 this option will not work on a MIPS core without SmartMIPS core. If
1443 you don't know you probably don't have SmartMIPS and should say N
1449 config 64BIT_CONTEXT
1450 bool "Save 64bit integer registers"
1451 depends on 32BIT && CPU_LOONGSON2
1453 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1454 registers can still be accessed as 64bit, mainly for multimedia
1455 instructions. We must have all 64bit save/restored to make sure
1456 those instructions to get correct result.
1459 # Vectored interrupt mode is an R2 feature
1461 config CPU_MIPSR2_IRQ_VI
1465 # Extended interrupt mode is an R2 feature
1467 config CPU_MIPSR2_IRQ_EI
1471 # Shadow registers are an R2 feature
1473 config CPU_MIPSR2_SRS
1478 depends on !CPU_R3000
1482 # Use the generic interrupt handling code in kernel/irq/:
1484 config GENERIC_HARDIRQS
1488 config GENERIC_IRQ_PROBE
1496 # - Highmem only makes sense for the 32-bit kernel.
1497 # - The current highmem code will only work properly on physically indexed
1498 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1499 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1500 # moment we protect the user and offer the highmem option only on machines
1501 # where it's known to be safe. This will not offer highmem on a few systems
1502 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1503 # indexed CPUs but we're playing safe.
1504 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1505 # know they might have memory configurations that could make use of highmem
1509 bool "High Memory Support"
1510 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1512 config CPU_SUPPORTS_HIGHMEM
1515 config SYS_SUPPORTS_HIGHMEM
1518 config SYS_SUPPORTS_SMARTMIPS
1521 config ARCH_FLATMEM_ENABLE
1525 config ARCH_DISCONTIGMEM_ENABLE
1527 default y if SGI_IP27
1529 Say Y to support efficient handling of discontiguous physical memory,
1530 for architectures which are either NUMA (Non-Uniform Memory Access)
1531 or have huge holes in the physical address space for other reasons.
1532 See <file:Documentation/vm/numa> for more.
1534 config ARCH_SPARSEMEM_ENABLE
1536 select SPARSEMEM_STATIC
1540 depends on SYS_SUPPORTS_NUMA
1542 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1543 Access). This option improves performance on systems with more
1544 than two nodes; on two node systems it is generally better to
1545 leave it disabled; on single node systems disable this option
1548 config SYS_SUPPORTS_NUMA
1554 depends on NEED_MULTIPLE_NODES
1559 bool "Multi-Processing support"
1560 depends on SYS_SUPPORTS_SMP
1563 This enables support for systems with more than one CPU. If you have
1564 a system with only one CPU, like most personal computers, say N. If
1565 you have a system with more than one CPU, say Y.
1567 If you say N here, the kernel will run on single and multiprocessor
1568 machines, but will use only one CPU of a multiprocessor machine. If
1569 you say Y here, the kernel will run on many, but not all,
1570 singleprocessor machines. On a singleprocessor machine, the kernel
1571 will run faster if you say N here.
1573 People using multiprocessor machines who say Y here should also say
1574 Y to "Enhanced Real Time Clock Support", below.
1576 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1577 available at <http://www.tldp.org/docs.html#howto>.
1579 If you don't know what to do here, say N.
1581 config SYS_SUPPORTS_SMP
1584 config NR_CPUS_DEFAULT_1
1587 config NR_CPUS_DEFAULT_2
1590 config NR_CPUS_DEFAULT_4
1593 config NR_CPUS_DEFAULT_8
1596 config NR_CPUS_DEFAULT_16
1599 config NR_CPUS_DEFAULT_32
1602 config NR_CPUS_DEFAULT_64
1606 int "Maximum number of CPUs (2-64)"
1607 range 1 64 if NR_CPUS_DEFAULT_1
1609 default "1" if NR_CPUS_DEFAULT_1
1610 default "2" if NR_CPUS_DEFAULT_2
1611 default "4" if NR_CPUS_DEFAULT_4
1612 default "8" if NR_CPUS_DEFAULT_8
1613 default "16" if NR_CPUS_DEFAULT_16
1614 default "32" if NR_CPUS_DEFAULT_32
1615 default "64" if NR_CPUS_DEFAULT_64
1617 This allows you to specify the maximum number of CPUs which this
1618 kernel will support. The maximum supported value is 32 for 32-bit
1619 kernel and 64 for 64-bit kernels; the minimum value which makes
1620 sense is 1 for Qemu (useful only for kernel debugging purposes)
1621 and 2 for all others.
1623 This is purely to save memory - each supported CPU adds
1624 approximately eight kilobytes to the kernel image. For best
1625 performance should round up your number of processors to the next
1629 # Timer Interrupt Frequency Configuration
1633 prompt "Timer frequency"
1636 Allows the configuration of the timer frequency.
1639 bool "48 HZ" if SYS_SUPPORTS_48HZ
1642 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1645 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1648 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1651 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1654 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1657 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1661 config SYS_SUPPORTS_48HZ
1664 config SYS_SUPPORTS_100HZ
1667 config SYS_SUPPORTS_128HZ
1670 config SYS_SUPPORTS_250HZ
1673 config SYS_SUPPORTS_256HZ
1676 config SYS_SUPPORTS_1000HZ
1679 config SYS_SUPPORTS_1024HZ
1682 config SYS_SUPPORTS_ARBIT_HZ
1684 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1685 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1686 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1687 !SYS_SUPPORTS_1024HZ
1692 default 100 if HZ_100
1693 default 128 if HZ_128
1694 default 250 if HZ_250
1695 default 256 if HZ_256
1696 default 1000 if HZ_1000
1697 default 1024 if HZ_1024
1699 source "kernel/Kconfig.preempt"
1701 config MIPS_INSANE_LARGE
1702 bool "Support for large 64-bit configurations"
1703 depends on CPU_R10000 && 64BIT
1705 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1706 previous 64-bit processors which only supported 40 bit / 1TB. If you
1707 need processes of more than 1TB virtual address space, say Y here.
1708 This will result in additional memory usage, so it is not
1709 recommended for normal users.
1712 bool "Kexec system call (EXPERIMENTAL)"
1713 depends on EXPERIMENTAL
1715 kexec is a system call that implements the ability to shutdown your
1716 current kernel, and to start another kernel. It is like a reboot
1717 but it is independent of the system firmware. And like a reboot
1718 you can start any kernel with it, not just Linux.
1720 The name comes from the similiarity to the exec system call.
1722 It is an ongoing process to be certain the hardware in a machine
1723 is properly shutdown, so do not be surprised if this code does not
1724 initially work for you. It may help to enable device hotplugging
1725 support. As of this writing the exact hardware interface is
1726 strongly in flux, so no good recommendation can be made.
1729 bool "Enable seccomp to safely compute untrusted bytecode"
1733 This kernel feature is useful for number crunching applications
1734 that may need to compute untrusted bytecode during their
1735 execution. By using pipes or other transports made available to
1736 the process as file descriptors supporting the read/write
1737 syscalls, it's possible to isolate those applications in
1738 their own address space using seccomp. Once seccomp is
1739 enabled via /proc/<pid>/seccomp, it cannot be disabled
1740 and the task is only allowed to execute a few safe syscalls
1741 defined by each seccomp mode.
1743 If unsure, say Y. Only embedded should say N here.
1747 config RWSEM_GENERIC_SPINLOCK
1751 config LOCKDEP_SUPPORT
1755 config STACKTRACE_SUPPORT
1759 source "init/Kconfig"
1761 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1769 bool "Support for PCI controller"
1770 depends on HW_HAS_PCI
1772 Find out whether you have a PCI motherboard. PCI is the name of a
1773 bus system, i.e. the way the CPU talks to the other stuff inside
1774 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1777 The PCI-HOWTO, available from
1778 <http://www.tldp.org/docs.html#howto>, contains valuable
1779 information about which PCI hardware does work under Linux and which
1786 source "drivers/pci/Kconfig"
1789 # ISA support is now enabled via select. Too many systems still have the one
1790 # or other ISA chip on the board that users don't know about so don't expect
1791 # users to choose the right thing ...
1798 depends on HW_HAS_EISA
1800 select GENERIC_ISA_DMA
1802 The Extended Industry Standard Architecture (EISA) bus was
1803 developed as an open alternative to the IBM MicroChannel bus.
1805 The EISA bus provided some of the features of the IBM MicroChannel
1806 bus while maintaining backward compatibility with cards made for
1807 the older ISA bus. The EISA bus saw limited use between 1988 and
1808 1995 when it was made obsolete by the PCI bus.
1810 Say Y here if you are building a kernel for an EISA-based machine.
1814 source "drivers/eisa/Kconfig"
1817 bool "TURBOchannel support"
1818 depends on MACH_DECSTATION
1820 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1821 processors. Documentation on writing device drivers for TurboChannel
1823 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1826 # bool "Access.Bus support"
1836 source "drivers/pcmcia/Kconfig"
1838 source "drivers/pci/hotplug/Kconfig"
1842 menu "Executable file formats"
1844 source "fs/Kconfig.binfmt"
1850 bool "Use 64-bit ELF format for building"
1853 A 64-bit kernel is usually built using the 64-bit ELF binary object
1854 format as it's one that allows arbitrary 64-bit constructs. For
1855 kernels that are loaded within the KSEG compatibility segments the
1856 32-bit ELF format can optionally be used resulting in a somewhat
1857 smaller binary, but this option is not explicitly supported by the
1858 toolchain and since binutils 2.14 it does not even work at all.
1860 Say Y to use the 64-bit format or N to use the 32-bit one.
1865 bool "Include IRIX binary compatibility"
1866 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1868 config MIPS32_COMPAT
1869 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1872 Select this option if you want Linux/MIPS 32-bit binary
1873 compatibility. Since all software available for Linux/MIPS is
1874 currently 32-bit you should say Y here.
1878 depends on MIPS32_COMPAT
1881 config SYSVIPC_COMPAT
1883 depends on COMPAT && SYSVIPC
1887 bool "Kernel support for o32 binaries"
1888 depends on MIPS32_COMPAT
1890 Select this option if you want to run o32 binaries. These are pure
1891 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1892 existing binaries are in this format.
1897 bool "Kernel support for n32 binaries"
1898 depends on MIPS32_COMPAT
1900 Select this option if you want to run n32 binaries. These are
1901 64-bit binaries using 32-bit quantities for addressing and certain
1902 data that would normally be 64-bit. They are used in special
1909 default y if MIPS32_O32 || MIPS32_N32
1913 menu "Power management options"
1915 source "kernel/power/Kconfig"
1919 source "net/Kconfig"
1921 source "drivers/Kconfig"
1925 source "arch/mips/oprofile/Kconfig"
1927 source "arch/mips/Kconfig.debug"
1929 source "security/Kconfig"
1931 source "crypto/Kconfig"
1933 source "lib/Kconfig"