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
773 config MIPS_BOARDS_GEN
776 config PCI_GT64XXX_PCI0
779 config NO_EXCEPT_FILL
784 select HAS_TXX9_SERIAL
796 select DMA_NONCOHERENT
798 select SYS_HAS_CPU_MIPS32_R1
799 select SYS_HAS_EARLY_PRINTK
800 select SYS_SUPPORTS_32BIT_KERNEL
801 select GENERIC_HARDIRQS_NO__DO_IRQ
802 select SYS_SUPPORTS_KGDB
817 # Unfortunately not all GT64120 systems run the chip at the same clock.
818 # As the user for the clock rate and try to minimize the available options.
821 prompt "Galileo Chip Clock"
822 depends on MOMENCO_OCELOT
823 default SYSCLK_100 if MOMENCO_OCELOT
826 bool "100" if MOMENCO_OCELOT
836 config MIPS_L1_CACHE_SHIFT
838 default "4" if MACH_DECSTATION
839 default "7" if SGI_IP27 || SNI_RM
840 default "4" if PMC_MSP4200_EVAL
843 config HAVE_STD_PC_SERIAL_PORT
847 bool "ARC console support"
848 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
852 depends on MACH_JAZZ || SNI_RM || SGI_IP32
857 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
874 depends on SYS_HAS_CPU_LOONGSON2
875 select CPU_SUPPORTS_32BIT_KERNEL
876 select CPU_SUPPORTS_64BIT_KERNEL
877 select CPU_SUPPORTS_HIGHMEM
879 The Loongson 2E processor implements the MIPS III instruction set
880 with many extensions.
883 bool "MIPS32 Release 1"
884 depends on SYS_HAS_CPU_MIPS32_R1
886 select CPU_HAS_PREFETCH
887 select CPU_SUPPORTS_32BIT_KERNEL
888 select CPU_SUPPORTS_HIGHMEM
890 Choose this option to build a kernel for release 1 or later of the
891 MIPS32 architecture. Most modern embedded systems with a 32-bit
892 MIPS processor are based on a MIPS32 processor. If you know the
893 specific type of processor in your system, choose those that one
894 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
895 Release 2 of the MIPS32 architecture is available since several
896 years so chances are you even have a MIPS32 Release 2 processor
897 in which case you should choose CPU_MIPS32_R2 instead for better
901 bool "MIPS32 Release 2"
902 depends on SYS_HAS_CPU_MIPS32_R2
904 select CPU_HAS_PREFETCH
905 select CPU_SUPPORTS_32BIT_KERNEL
906 select CPU_SUPPORTS_HIGHMEM
908 Choose this option to build a kernel for release 2 or later of the
909 MIPS32 architecture. Most modern embedded systems with a 32-bit
910 MIPS processor are based on a MIPS32 processor. If you know the
911 specific type of processor in your system, choose those that one
912 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
915 bool "MIPS64 Release 1"
916 depends on SYS_HAS_CPU_MIPS64_R1
918 select CPU_HAS_PREFETCH
919 select CPU_SUPPORTS_32BIT_KERNEL
920 select CPU_SUPPORTS_64BIT_KERNEL
921 select CPU_SUPPORTS_HIGHMEM
923 Choose this option to build a kernel for release 1 or later of the
924 MIPS64 architecture. Many modern embedded systems with a 64-bit
925 MIPS processor are based on a MIPS64 processor. If you know the
926 specific type of processor in your system, choose those that one
927 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
928 Release 2 of the MIPS64 architecture is available since several
929 years so chances are you even have a MIPS64 Release 2 processor
930 in which case you should choose CPU_MIPS64_R2 instead for better
934 bool "MIPS64 Release 2"
935 depends on SYS_HAS_CPU_MIPS64_R2
937 select CPU_HAS_PREFETCH
938 select CPU_SUPPORTS_32BIT_KERNEL
939 select CPU_SUPPORTS_64BIT_KERNEL
940 select CPU_SUPPORTS_HIGHMEM
942 Choose this option to build a kernel for release 2 or later of the
943 MIPS64 architecture. Many modern embedded systems with a 64-bit
944 MIPS processor are based on a MIPS64 processor. If you know the
945 specific type of processor in your system, choose those that one
946 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
950 depends on SYS_HAS_CPU_R3000
952 select CPU_SUPPORTS_32BIT_KERNEL
953 select CPU_SUPPORTS_HIGHMEM
955 Please make sure to pick the right CPU type. Linux/MIPS is not
956 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
957 *not* work on R4000 machines and vice versa. However, since most
958 of the supported machines have an R4000 (or similar) CPU, R4x00
959 might be a safe bet. If the resulting kernel does not work,
960 try to recompile with R3000.
964 depends on SYS_HAS_CPU_TX39XX
965 select CPU_SUPPORTS_32BIT_KERNEL
969 depends on SYS_HAS_CPU_VR41XX
970 select CPU_SUPPORTS_32BIT_KERNEL
971 select CPU_SUPPORTS_64BIT_KERNEL
973 The options selects support for the NEC VR4100 series of processors.
974 Only choose this option if you have one of these processors as a
975 kernel built with this option will not run on any other type of
976 processor or vice versa.
980 depends on SYS_HAS_CPU_R4300
982 select CPU_SUPPORTS_32BIT_KERNEL
983 select CPU_SUPPORTS_64BIT_KERNEL
985 MIPS Technologies R4300-series processors.
989 depends on SYS_HAS_CPU_R4X00
991 select CPU_SUPPORTS_32BIT_KERNEL
992 select CPU_SUPPORTS_64BIT_KERNEL
994 MIPS Technologies R4000-series processors other than 4300, including
995 the R4000, R4400, R4600, and 4700.
999 depends on SYS_HAS_CPU_TX49XX
1001 select CPU_HAS_PREFETCH
1002 select CPU_SUPPORTS_32BIT_KERNEL
1003 select CPU_SUPPORTS_64BIT_KERNEL
1007 depends on SYS_HAS_CPU_R5000
1009 select CPU_SUPPORTS_32BIT_KERNEL
1010 select CPU_SUPPORTS_64BIT_KERNEL
1012 MIPS Technologies R5000-series processors other than the Nevada.
1016 depends on SYS_HAS_CPU_R5432
1018 select CPU_SUPPORTS_32BIT_KERNEL
1019 select CPU_SUPPORTS_64BIT_KERNEL
1023 depends on EXPERIMENTAL
1025 depends on SYS_HAS_CPU_R6000
1026 select CPU_SUPPORTS_32BIT_KERNEL
1028 MIPS Technologies R6000 and R6000A series processors. Note these
1029 processors are extremely rare and the support for them is incomplete.
1033 depends on SYS_HAS_CPU_NEVADA
1035 select CPU_SUPPORTS_32BIT_KERNEL
1036 select CPU_SUPPORTS_64BIT_KERNEL
1038 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1042 depends on EXPERIMENTAL
1043 depends on SYS_HAS_CPU_R8000
1045 select CPU_HAS_PREFETCH
1046 select CPU_SUPPORTS_64BIT_KERNEL
1048 MIPS Technologies R8000 processors. Note these processors are
1049 uncommon and the support for them is incomplete.
1053 depends on SYS_HAS_CPU_R10000
1055 select CPU_HAS_PREFETCH
1056 select CPU_SUPPORTS_32BIT_KERNEL
1057 select CPU_SUPPORTS_64BIT_KERNEL
1058 select CPU_SUPPORTS_HIGHMEM
1060 MIPS Technologies R10000-series processors.
1064 depends on SYS_HAS_CPU_RM7000
1066 select CPU_HAS_PREFETCH
1067 select CPU_SUPPORTS_32BIT_KERNEL
1068 select CPU_SUPPORTS_64BIT_KERNEL
1069 select CPU_SUPPORTS_HIGHMEM
1073 depends on SYS_HAS_CPU_RM9000
1075 select CPU_HAS_PREFETCH
1076 select CPU_SUPPORTS_32BIT_KERNEL
1077 select CPU_SUPPORTS_64BIT_KERNEL
1078 select CPU_SUPPORTS_HIGHMEM
1079 select WEAK_ORDERING
1083 depends on SYS_HAS_CPU_SB1
1085 select CPU_SUPPORTS_32BIT_KERNEL
1086 select CPU_SUPPORTS_64BIT_KERNEL
1087 select CPU_SUPPORTS_HIGHMEM
1088 select WEAK_ORDERING
1092 config SYS_HAS_CPU_LOONGSON2
1095 config SYS_HAS_CPU_MIPS32_R1
1098 config SYS_HAS_CPU_MIPS32_R2
1101 config SYS_HAS_CPU_MIPS64_R1
1104 config SYS_HAS_CPU_MIPS64_R2
1107 config SYS_HAS_CPU_R3000
1110 config SYS_HAS_CPU_TX39XX
1113 config SYS_HAS_CPU_VR41XX
1116 config SYS_HAS_CPU_R4300
1119 config SYS_HAS_CPU_R4X00
1122 config SYS_HAS_CPU_TX49XX
1125 config SYS_HAS_CPU_R5000
1128 config SYS_HAS_CPU_R5432
1131 config SYS_HAS_CPU_R6000
1134 config SYS_HAS_CPU_NEVADA
1137 config SYS_HAS_CPU_R8000
1140 config SYS_HAS_CPU_R10000
1143 config SYS_HAS_CPU_RM7000
1146 config SYS_HAS_CPU_RM9000
1149 config SYS_HAS_CPU_SB1
1153 # CPU may reorder R->R, R->W, W->R, W->W
1154 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1156 config WEAK_ORDERING
1160 # CPU may reorder reads and writes beyond LL/SC
1161 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1163 config WEAK_REORDERING_BEYOND_LLSC
1168 # These two indicate any level of the MIPS32 and MIPS64 architecture
1172 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1176 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1179 # These two indicate the revision of the architecture, either Release 1 or Release 2
1183 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1187 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1189 config SYS_SUPPORTS_32BIT_KERNEL
1191 config SYS_SUPPORTS_64BIT_KERNEL
1193 config CPU_SUPPORTS_32BIT_KERNEL
1195 config CPU_SUPPORTS_64BIT_KERNEL
1202 prompt "Kernel code model"
1204 You should only select this option if you have a workload that
1205 actually benefits from 64-bit processing or if your machine has
1206 large memory. You will only be presented a single option in this
1207 menu if your system does not support both 32-bit and 64-bit kernels.
1210 bool "32-bit kernel"
1211 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1214 Select this option if you want to build a 32-bit kernel.
1216 bool "64-bit kernel"
1217 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1219 Select this option if you want to build a 64-bit kernel.
1224 prompt "Kernel page size"
1225 default PAGE_SIZE_4KB
1227 config PAGE_SIZE_4KB
1230 This option select the standard 4kB Linux page size. On some
1231 R3000-family processors this is the only available page size. Using
1232 4kB page size will minimize memory consumption and is therefore
1233 recommended for low memory systems.
1235 config PAGE_SIZE_8KB
1237 depends on EXPERIMENTAL && CPU_R8000
1239 Using 8kB page size will result in higher performance kernel at
1240 the price of higher memory consumption. This option is available
1241 only on the R8000 processor. Not that at the time of this writing
1242 this option is still high experimental; there are also issues with
1243 compatibility of user applications.
1245 config PAGE_SIZE_16KB
1247 depends on !CPU_R3000 && !CPU_TX39XX
1249 Using 16kB page size will result in higher performance kernel at
1250 the price of higher memory consumption. This option is available on
1251 all non-R3000 family processors. Note that you will need a suitable
1252 Linux distribution to support this.
1254 config PAGE_SIZE_64KB
1256 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1258 Using 64kB page size will result in higher performance kernel at
1259 the price of higher memory consumption. This option is available on
1260 all non-R3000 family processor. Not that at the time of this
1261 writing this option is still high experimental.
1268 config IP22_CPU_SCACHE
1273 # Support for a MIPS32 / MIPS64 style S-caches
1275 config MIPS_CPU_SCACHE
1279 config R5000_CPU_SCACHE
1283 config RM7000_CPU_SCACHE
1287 config SIBYTE_DMA_PAGEOPS
1288 bool "Use DMA to clear/copy pages"
1291 Instead of using the CPU to zero and copy pages, use a Data Mover
1292 channel. These DMA channels are otherwise unused by the standard
1293 SiByte Linux port. Seems to give a small performance benefit.
1295 config CPU_HAS_PREFETCH
1299 prompt "MIPS MT options"
1301 config MIPS_MT_DISABLED
1302 bool "Disable multithreading support."
1304 Use this option if your workload can't take advantage of
1305 MIPS hardware multithreading support. On systems that don't have
1306 the option of an MT-enabled processor this option will be the only
1307 option in this menu.
1310 bool "Use 1 TC on each available VPE for SMP"
1311 depends on SYS_SUPPORTS_MULTITHREADING
1312 select CPU_MIPSR2_IRQ_VI
1313 select CPU_MIPSR2_IRQ_EI
1314 select CPU_MIPSR2_SRS
1316 select NR_CPUS_DEFAULT_2
1318 select SYS_SUPPORTS_SMP
1320 This is a kernel model which is also known a VSMP or lately
1321 has been marketesed into SMVP.
1324 bool "SMTC: Use all TCs on all VPEs for SMP"
1325 depends on CPU_MIPS32_R2
1326 #depends on CPU_MIPS64_R2 # once there is hardware ...
1327 depends on SYS_SUPPORTS_MULTITHREADING
1328 select CPU_MIPSR2_IRQ_VI
1329 select CPU_MIPSR2_IRQ_EI
1330 select CPU_MIPSR2_SRS
1332 select NR_CPUS_DEFAULT_8
1334 select SYS_SUPPORTS_SMP
1336 This is a kernel model which is known a SMTC or lately has been
1337 marketesed into SMVP.
1344 config SYS_SUPPORTS_MULTITHREADING
1347 config MIPS_MT_FPAFF
1348 bool "Dynamic FPU affinity for FP-intensive threads"
1350 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1352 config MIPS_VPE_LOADER
1353 bool "VPE loader support."
1354 depends on SYS_SUPPORTS_MULTITHREADING
1355 select CPU_MIPSR2_IRQ_VI
1356 select CPU_MIPSR2_IRQ_EI
1357 select CPU_MIPSR2_SRS
1360 Includes a loader for loading an elf relocatable object
1361 onto another VPE and running it.
1363 config MIPS_MT_SMTC_INSTANT_REPLAY
1364 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1365 depends on MIPS_MT_SMTC && !PREEMPT
1368 SMTC pseudo-interrupts between TCs are deferred and queued
1369 if the target TC is interrupt-inhibited (IXMT). In the first
1370 SMTC prototypes, these queued IPIs were serviced on return
1371 to user mode, or on entry into the kernel idle loop. The
1372 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1373 processing, which adds runtime overhead (hence the option to turn
1374 it off), but ensures that IPIs are handled promptly even under
1375 heavy I/O interrupt load.
1377 config MIPS_MT_SMTC_IM_BACKSTOP
1378 bool "Use per-TC register bits as backstop for inhibited IM bits"
1379 depends on MIPS_MT_SMTC
1382 To support multiple TC microthreads acting as "CPUs" within
1383 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1384 during interrupt handling. To support legacy drivers and interrupt
1385 controller management code, SMTC has a "backstop" to track and
1386 if necessary restore the interrupt mask. This has some performance
1387 impact on interrupt service overhead. Disable it only if you know
1390 config MIPS_VPE_LOADER_TOM
1391 bool "Load VPE program into memory hidden from linux"
1392 depends on MIPS_VPE_LOADER
1395 The loader can use memory that is present but has been hidden from
1396 Linux using the kernel command line option "mem=xxMB". It's up to
1397 you to ensure the amount you put in the option and the space your
1398 program requires is less or equal to the amount physically present.
1400 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1401 config MIPS_VPE_APSP_API
1402 bool "Enable support for AP/SP API (RTLX)"
1403 depends on MIPS_VPE_LOADER
1406 config MIPS_APSP_KSPD
1408 depends on MIPS_VPE_APSP_API
1411 KSPD is a kernel daemon that accepts syscall requests from the SP
1412 side, actions them and returns the results. It also handles the
1413 "exit" syscall notifying other kernel modules the SP program is
1414 exiting. You probably want to say yes here.
1416 config SB1_PASS_1_WORKAROUNDS
1418 depends on CPU_SB1_PASS_1
1421 config SB1_PASS_2_WORKAROUNDS
1423 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1426 config SB1_PASS_2_1_WORKAROUNDS
1428 depends on CPU_SB1 && CPU_SB1_PASS_2
1431 config 64BIT_PHYS_ADDR
1437 config CPU_HAS_SMARTMIPS
1438 depends on SYS_SUPPORTS_SMARTMIPS
1439 bool "Support for the SmartMIPS ASE"
1441 SmartMIPS is a extension of the MIPS32 architecture aimed at
1442 increased security at both hardware and software level for
1443 smartcards. Enabling this option will allow proper use of the
1444 SmartMIPS instructions by Linux applications. However a kernel with
1445 this option will not work on a MIPS core without SmartMIPS core. If
1446 you don't know you probably don't have SmartMIPS and should say N
1452 config 64BIT_CONTEXT
1453 bool "Save 64bit integer registers"
1454 depends on 32BIT && CPU_LOONGSON2
1456 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1457 registers can still be accessed as 64bit, mainly for multimedia
1458 instructions. We must have all 64bit save/restored to make sure
1459 those instructions to get correct result.
1462 # Vectored interrupt mode is an R2 feature
1464 config CPU_MIPSR2_IRQ_VI
1468 # Extended interrupt mode is an R2 feature
1470 config CPU_MIPSR2_IRQ_EI
1474 # Shadow registers are an R2 feature
1476 config CPU_MIPSR2_SRS
1481 depends on !CPU_R3000
1485 # Use the generic interrupt handling code in kernel/irq/:
1487 config GENERIC_HARDIRQS
1491 config GENERIC_IRQ_PROBE
1499 # - Highmem only makes sense for the 32-bit kernel.
1500 # - The current highmem code will only work properly on physically indexed
1501 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1502 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1503 # moment we protect the user and offer the highmem option only on machines
1504 # where it's known to be safe. This will not offer highmem on a few systems
1505 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1506 # indexed CPUs but we're playing safe.
1507 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1508 # know they might have memory configurations that could make use of highmem
1512 bool "High Memory Support"
1513 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1515 config CPU_SUPPORTS_HIGHMEM
1518 config SYS_SUPPORTS_HIGHMEM
1521 config SYS_SUPPORTS_SMARTMIPS
1524 config ARCH_FLATMEM_ENABLE
1528 config ARCH_DISCONTIGMEM_ENABLE
1530 default y if SGI_IP27
1532 Say Y to support efficient handling of discontiguous physical memory,
1533 for architectures which are either NUMA (Non-Uniform Memory Access)
1534 or have huge holes in the physical address space for other reasons.
1535 See <file:Documentation/vm/numa> for more.
1537 config ARCH_SPARSEMEM_ENABLE
1539 select SPARSEMEM_STATIC
1543 depends on SYS_SUPPORTS_NUMA
1545 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1546 Access). This option improves performance on systems with more
1547 than two nodes; on two node systems it is generally better to
1548 leave it disabled; on single node systems disable this option
1551 config SYS_SUPPORTS_NUMA
1557 depends on NEED_MULTIPLE_NODES
1562 bool "Multi-Processing support"
1563 depends on SYS_SUPPORTS_SMP
1566 This enables support for systems with more than one CPU. If you have
1567 a system with only one CPU, like most personal computers, say N. If
1568 you have a system with more than one CPU, say Y.
1570 If you say N here, the kernel will run on single and multiprocessor
1571 machines, but will use only one CPU of a multiprocessor machine. If
1572 you say Y here, the kernel will run on many, but not all,
1573 singleprocessor machines. On a singleprocessor machine, the kernel
1574 will run faster if you say N here.
1576 People using multiprocessor machines who say Y here should also say
1577 Y to "Enhanced Real Time Clock Support", below.
1579 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1580 available at <http://www.tldp.org/docs.html#howto>.
1582 If you don't know what to do here, say N.
1584 config SYS_SUPPORTS_SMP
1587 config NR_CPUS_DEFAULT_1
1590 config NR_CPUS_DEFAULT_2
1593 config NR_CPUS_DEFAULT_4
1596 config NR_CPUS_DEFAULT_8
1599 config NR_CPUS_DEFAULT_16
1602 config NR_CPUS_DEFAULT_32
1605 config NR_CPUS_DEFAULT_64
1609 int "Maximum number of CPUs (2-64)"
1610 range 1 64 if NR_CPUS_DEFAULT_1
1612 default "1" if NR_CPUS_DEFAULT_1
1613 default "2" if NR_CPUS_DEFAULT_2
1614 default "4" if NR_CPUS_DEFAULT_4
1615 default "8" if NR_CPUS_DEFAULT_8
1616 default "16" if NR_CPUS_DEFAULT_16
1617 default "32" if NR_CPUS_DEFAULT_32
1618 default "64" if NR_CPUS_DEFAULT_64
1620 This allows you to specify the maximum number of CPUs which this
1621 kernel will support. The maximum supported value is 32 for 32-bit
1622 kernel and 64 for 64-bit kernels; the minimum value which makes
1623 sense is 1 for Qemu (useful only for kernel debugging purposes)
1624 and 2 for all others.
1626 This is purely to save memory - each supported CPU adds
1627 approximately eight kilobytes to the kernel image. For best
1628 performance should round up your number of processors to the next
1632 # Timer Interrupt Frequency Configuration
1636 prompt "Timer frequency"
1639 Allows the configuration of the timer frequency.
1642 bool "48 HZ" if SYS_SUPPORTS_48HZ
1645 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1648 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1651 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1654 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1657 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1660 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1664 config SYS_SUPPORTS_48HZ
1667 config SYS_SUPPORTS_100HZ
1670 config SYS_SUPPORTS_128HZ
1673 config SYS_SUPPORTS_250HZ
1676 config SYS_SUPPORTS_256HZ
1679 config SYS_SUPPORTS_1000HZ
1682 config SYS_SUPPORTS_1024HZ
1685 config SYS_SUPPORTS_ARBIT_HZ
1687 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1688 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1689 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1690 !SYS_SUPPORTS_1024HZ
1695 default 100 if HZ_100
1696 default 128 if HZ_128
1697 default 250 if HZ_250
1698 default 256 if HZ_256
1699 default 1000 if HZ_1000
1700 default 1024 if HZ_1024
1702 source "kernel/Kconfig.preempt"
1704 config MIPS_INSANE_LARGE
1705 bool "Support for large 64-bit configurations"
1706 depends on CPU_R10000 && 64BIT
1708 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1709 previous 64-bit processors which only supported 40 bit / 1TB. If you
1710 need processes of more than 1TB virtual address space, say Y here.
1711 This will result in additional memory usage, so it is not
1712 recommended for normal users.
1715 bool "Kexec system call (EXPERIMENTAL)"
1716 depends on EXPERIMENTAL
1718 kexec is a system call that implements the ability to shutdown your
1719 current kernel, and to start another kernel. It is like a reboot
1720 but it is independent of the system firmware. And like a reboot
1721 you can start any kernel with it, not just Linux.
1723 The name comes from the similiarity to the exec system call.
1725 It is an ongoing process to be certain the hardware in a machine
1726 is properly shutdown, so do not be surprised if this code does not
1727 initially work for you. It may help to enable device hotplugging
1728 support. As of this writing the exact hardware interface is
1729 strongly in flux, so no good recommendation can be made.
1732 bool "Enable seccomp to safely compute untrusted bytecode"
1736 This kernel feature is useful for number crunching applications
1737 that may need to compute untrusted bytecode during their
1738 execution. By using pipes or other transports made available to
1739 the process as file descriptors supporting the read/write
1740 syscalls, it's possible to isolate those applications in
1741 their own address space using seccomp. Once seccomp is
1742 enabled via /proc/<pid>/seccomp, it cannot be disabled
1743 and the task is only allowed to execute a few safe syscalls
1744 defined by each seccomp mode.
1746 If unsure, say Y. Only embedded should say N here.
1750 config RWSEM_GENERIC_SPINLOCK
1754 config LOCKDEP_SUPPORT
1758 config STACKTRACE_SUPPORT
1762 source "init/Kconfig"
1764 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1772 bool "Support for PCI controller"
1773 depends on HW_HAS_PCI
1775 Find out whether you have a PCI motherboard. PCI is the name of a
1776 bus system, i.e. the way the CPU talks to the other stuff inside
1777 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1780 The PCI-HOWTO, available from
1781 <http://www.tldp.org/docs.html#howto>, contains valuable
1782 information about which PCI hardware does work under Linux and which
1789 source "drivers/pci/Kconfig"
1792 # ISA support is now enabled via select. Too many systems still have the one
1793 # or other ISA chip on the board that users don't know about so don't expect
1794 # users to choose the right thing ...
1801 depends on HW_HAS_EISA
1803 select GENERIC_ISA_DMA
1805 The Extended Industry Standard Architecture (EISA) bus was
1806 developed as an open alternative to the IBM MicroChannel bus.
1808 The EISA bus provided some of the features of the IBM MicroChannel
1809 bus while maintaining backward compatibility with cards made for
1810 the older ISA bus. The EISA bus saw limited use between 1988 and
1811 1995 when it was made obsolete by the PCI bus.
1813 Say Y here if you are building a kernel for an EISA-based machine.
1817 source "drivers/eisa/Kconfig"
1820 bool "TURBOchannel support"
1821 depends on MACH_DECSTATION
1823 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1824 processors. Documentation on writing device drivers for TurboChannel
1826 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1829 # bool "Access.Bus support"
1839 source "drivers/pcmcia/Kconfig"
1841 source "drivers/pci/hotplug/Kconfig"
1845 menu "Executable file formats"
1847 source "fs/Kconfig.binfmt"
1853 bool "Use 64-bit ELF format for building"
1856 A 64-bit kernel is usually built using the 64-bit ELF binary object
1857 format as it's one that allows arbitrary 64-bit constructs. For
1858 kernels that are loaded within the KSEG compatibility segments the
1859 32-bit ELF format can optionally be used resulting in a somewhat
1860 smaller binary, but this option is not explicitly supported by the
1861 toolchain and since binutils 2.14 it does not even work at all.
1863 Say Y to use the 64-bit format or N to use the 32-bit one.
1868 bool "Include IRIX binary compatibility"
1869 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1871 config MIPS32_COMPAT
1872 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1875 Select this option if you want Linux/MIPS 32-bit binary
1876 compatibility. Since all software available for Linux/MIPS is
1877 currently 32-bit you should say Y here.
1881 depends on MIPS32_COMPAT
1884 config SYSVIPC_COMPAT
1886 depends on COMPAT && SYSVIPC
1890 bool "Kernel support for o32 binaries"
1891 depends on MIPS32_COMPAT
1893 Select this option if you want to run o32 binaries. These are pure
1894 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1895 existing binaries are in this format.
1900 bool "Kernel support for n32 binaries"
1901 depends on MIPS32_COMPAT
1903 Select this option if you want to run n32 binaries. These are
1904 64-bit binaries using 32-bit quantities for addressing and certain
1905 data that would normally be 64-bit. They are used in special
1912 default y if MIPS32_O32 || MIPS32_N32
1916 menu "Power management options"
1918 source "kernel/power/Kconfig"
1922 source "net/Kconfig"
1924 source "drivers/Kconfig"
1928 source "arch/mips/oprofile/Kconfig"
1930 source "arch/mips/Kconfig.debug"
1932 source "security/Kconfig"
1934 source "crypto/Kconfig"
1936 source "lib/Kconfig"