4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "Lemote Fulong mini-PC"
20 select ARCH_SPARSEMEM_ENABLE
21 select SYS_HAS_CPU_LOONGSON2
22 select DMA_NONCOHERENT
25 select HAVE_STD_PC_SERIAL_PORT
30 select SYS_SUPPORTS_32BIT_KERNEL
31 select SYS_SUPPORTS_64BIT_KERNEL
32 select SYS_SUPPORTS_LITTLE_ENDIAN
33 select SYS_SUPPORTS_HIGHMEM
34 select SYS_HAS_EARLY_PRINTK
35 select GENERIC_HARDIRQS_NO__DO_IRQ
38 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
42 bool "Alchemy processor based machines"
45 bool "Basler eXcite smart camera"
52 select SYS_HAS_CPU_RM9000
53 select SYS_SUPPORTS_32BIT_KERNEL
54 select SYS_SUPPORTS_64BIT_KERNEL
55 select SYS_SUPPORTS_BIG_ENDIAN
56 select SYS_SUPPORTS_KGDB
58 The eXcite is a smart camera platform manufactured by
59 Basler Vision Technologies AG.
61 config BASLER_EXCITE_PROTOTYPE
62 bool "Support for pre-release units"
63 depends on BASLER_EXCITE
66 Pre-series (prototype) units are different from later ones in
67 some ways. Select this option if you have one of these. Please
68 note that a kernel built with this option selected will not be
69 able to run on normal units.
73 select DMA_NONCOHERENT
77 select PCI_GT64XXX_PCI0
78 select SYS_HAS_CPU_NEVADA
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
82 select SYS_SUPPORTS_LITTLE_ENDIAN
83 select GENERIC_HARDIRQS_NO__DO_IRQ
85 config MACH_DECSTATION
88 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_R3000
92 select SYS_HAS_CPU_R4X00
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SYS_SUPPORTS_128HZ
97 select SYS_SUPPORTS_256HZ
98 select SYS_SUPPORTS_1024HZ
100 This enables support for DEC's MIPS based workstations. For details
101 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
102 DECstation porting pages on <http://decstation.unix-ag.org/>.
104 If you have one of the following DECstation Models you definitely
105 want to choose R4xx0 for the CPU Type:
112 otherwise choose R3000.
115 bool "Jazz family of machines"
118 select ARCH_MAY_HAVE_PC_FDC
119 select GENERIC_ISA_DMA
123 select SYS_HAS_CPU_R4X00
124 select SYS_SUPPORTS_32BIT_KERNEL
125 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
126 select SYS_SUPPORTS_100HZ
127 select GENERIC_HARDIRQS_NO__DO_IRQ
129 This a family of machines based on the MIPS R4030 chipset which was
130 used by several vendors to build RISC/os and Windows NT workstations.
131 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
132 Olivetti M700-10 workstations.
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 "Wind River PPMC board"
217 select DMA_NONCOHERENT
219 select PCI_GT64XXX_PCI0
221 select SYS_HAS_CPU_MIPS32_R1
222 select SYS_HAS_CPU_MIPS32_R2
223 select SYS_HAS_CPU_MIPS64_R1
224 select SYS_HAS_CPU_NEVADA
225 select SYS_HAS_CPU_RM7000
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_64BIT_KERNEL
228 select SYS_SUPPORTS_BIG_ENDIAN
229 select SYS_SUPPORTS_LITTLE_ENDIAN
231 This enables support for the Wind River MIPS32 4KC PPMC evaluation
232 board, which is based on GT64120 bridge chip.
235 bool 'MIPS simulator (MIPSsim)'
236 select DMA_NONCOHERENT
237 select SYS_HAS_EARLY_PRINTK
240 select SYS_HAS_CPU_MIPS32_R1
241 select SYS_HAS_CPU_MIPS32_R2
242 select SYS_HAS_EARLY_PRINTK
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_BIG_ENDIAN
245 select SYS_SUPPORTS_MULTITHREADING
246 select SYS_SUPPORTS_LITTLE_ENDIAN
248 This option enables support for MIPS Technologies MIPSsim software
251 config MOMENCO_OCELOT
252 bool "Momentum Ocelot board"
253 select DMA_NONCOHERENT
257 select PCI_GT64XXX_PCI0
258 select RM7000_CPU_SCACHE
260 select SYS_HAS_CPU_RM7000
261 select SYS_SUPPORTS_32BIT_KERNEL
262 select SYS_SUPPORTS_64BIT_KERNEL
263 select SYS_SUPPORTS_BIG_ENDIAN
264 select SYS_SUPPORTS_KGDB
266 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
267 Momentum Computer <http://www.momenco.com/>.
269 config MOMENCO_OCELOT_3
270 bool "Momentum Ocelot-3 board"
272 select DMA_NONCOHERENT
278 select RM7000_CPU_SCACHE
280 select SYS_HAS_CPU_RM9000
281 select SYS_SUPPORTS_32BIT_KERNEL
282 select SYS_SUPPORTS_64BIT_KERNEL
283 select SYS_SUPPORTS_BIG_ENDIAN
285 The Ocelot-3 is based off Discovery III System Controller and
286 PMC-Sierra Rm79000 core.
289 bool "Philips PNX8550 based JBS board"
291 select SYS_SUPPORTS_LITTLE_ENDIAN
293 config PNX8550_STB810
294 bool "Philips PNX8550 based STB810 board"
296 select SYS_SUPPORTS_LITTLE_ENDIAN
299 bool "NEC DDB Vrc-5477"
300 select DDB5XXX_COMMON
301 select DMA_NONCOHERENT
305 select SYS_HAS_CPU_R5432
306 select SYS_SUPPORTS_32BIT_KERNEL
307 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
308 select SYS_SUPPORTS_KGDB
309 select SYS_SUPPORTS_KGDB
310 select SYS_SUPPORTS_LITTLE_ENDIAN
312 This enables support for the R5432-based NEC DDB Vrc-5477,
313 or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
315 Features : kernel debugging, serial terminal, NFS root fs, on-board
316 ether port USB, AC97, PCI, etc.
319 bool "NEC VR4100 series based machines"
320 select SYS_HAS_CPU_VR41XX
321 select GENERIC_HARDIRQS_NO__DO_IRQ
324 bool "PMC-Sierra MSP chipsets"
325 depends on EXPERIMENTAL
326 select DMA_NONCOHERENT
328 select NO_EXCEPT_FILL
330 select SYS_HAS_CPU_MIPS32_R1
331 select SYS_HAS_CPU_MIPS32_R2
332 select SYS_SUPPORTS_32BIT_KERNEL
333 select SYS_SUPPORTS_BIG_ENDIAN
334 select SYS_SUPPORTS_KGDB
337 select SERIAL_8250_CONSOLE
339 This adds support for the PMC-Sierra family of Multi-Service
340 Processor System-On-A-Chips. These parts include a number
341 of integrated peripherals, interfaces and DSPs in addition to
342 a variety of MIPS cores.
345 bool "PMC-Sierra Yosemite eval board"
352 select SYS_HAS_CPU_RM9000
353 select SYS_HAS_EARLY_PRINTK
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_64BIT_KERNEL
356 select SYS_SUPPORTS_BIG_ENDIAN
357 select SYS_SUPPORTS_HIGHMEM
358 select SYS_SUPPORTS_KGDB
359 select SYS_SUPPORTS_SMP
361 Yosemite is an evaluation board for the RM9000x2 processor
362 manufactured by PMC-Sierra.
367 select GENERIC_ISA_DMA
368 select HAVE_STD_PC_SERIAL_PORT
373 select SYS_HAS_CPU_MIPS32_R1
374 select SYS_SUPPORTS_32BIT_KERNEL
375 select SYS_SUPPORTS_BIG_ENDIAN
376 select SYS_SUPPORTS_LITTLE_ENDIAN
377 select ARCH_SPARSEMEM_ENABLE
378 select GENERIC_HARDIRQS_NO__DO_IRQ
379 select NR_CPUS_DEFAULT_1
380 select SYS_SUPPORTS_SMP
382 Qemu is a software emulator which among other architectures also
383 can simulate a MIPS32 4Kc system. This patch adds support for the
384 system architecture that currently is being simulated by Qemu. It
385 will eventually be removed again when Qemu has the capability to
386 simulate actual MIPS hardware platforms. More information on Qemu
387 can be found at http://www.linux-mips.org/wiki/Qemu.
390 bool "NEC EMMA2RH Mark-eins"
391 select DMA_NONCOHERENT
395 select SYS_SUPPORTS_32BIT_KERNEL
396 select SYS_SUPPORTS_BIG_ENDIAN
397 select SYS_SUPPORTS_LITTLE_ENDIAN
398 select SYS_HAS_CPU_R5000
400 This enables support for the R5432-based NEC Mark-eins
401 boards with R5500 CPU.
404 bool "SGI IP22 (Indy/Indigo2)"
408 select DMA_NONCOHERENT
410 select IP22_CPU_SCACHE
412 select GENERIC_ISA_DMA_SUPPORT_BROKEN
414 select SYS_HAS_CPU_R4X00
415 select SYS_HAS_CPU_R5000
416 select SYS_HAS_EARLY_PRINTK
417 select SYS_SUPPORTS_32BIT_KERNEL
418 select SYS_SUPPORTS_64BIT_KERNEL
419 select SYS_SUPPORTS_BIG_ENDIAN
421 This are the SGI Indy, Challenge S and Indigo2, as well as certain
422 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
423 that runs on these, say Y here.
426 bool "SGI IP27 (Origin200/2000)"
431 select SYS_HAS_EARLY_PRINTK
433 select NR_CPUS_DEFAULT_64
435 select SYS_HAS_CPU_R10000
436 select SYS_SUPPORTS_64BIT_KERNEL
437 select SYS_SUPPORTS_BIG_ENDIAN
438 select SYS_SUPPORTS_KGDB
439 select SYS_SUPPORTS_NUMA
440 select SYS_SUPPORTS_SMP
441 select GENERIC_HARDIRQS_NO__DO_IRQ
443 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
444 workstations. To compile a Linux kernel that runs on these, say Y
452 select DMA_NONCOHERENT
454 select R5000_CPU_SCACHE
455 select RM7000_CPU_SCACHE
456 select SYS_HAS_CPU_R5000
457 select SYS_HAS_CPU_R10000 if BROKEN
458 select SYS_HAS_CPU_RM7000
459 select SYS_HAS_CPU_NEVADA
460 select SYS_SUPPORTS_64BIT_KERNEL
461 select SYS_SUPPORTS_BIG_ENDIAN
463 If you want this kernel to run on SGI O2 workstation, say Y here.
466 bool "Sibyte BCM91480B-BigSur"
469 select NR_CPUS_DEFAULT_4
471 select SIBYTE_BCM1x80
473 select SYS_HAS_CPU_SB1
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_LITTLE_ENDIAN
478 bool "Sibyte BCM91250A-SWARM"
481 select NR_CPUS_DEFAULT_2
484 select SYS_HAS_CPU_SB1
485 select SYS_SUPPORTS_BIG_ENDIAN
486 select SYS_SUPPORTS_HIGHMEM
487 select SYS_SUPPORTS_KGDB
488 select SYS_SUPPORTS_LITTLE_ENDIAN
490 config SIBYTE_SENTOSA
491 bool "Sibyte BCM91250E-Sentosa"
492 depends on EXPERIMENTAL
495 select NR_CPUS_DEFAULT_2
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
503 bool "Sibyte BCM91125E-Rhone"
504 depends on EXPERIMENTAL
507 select SIBYTE_BCM1125H
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_LITTLE_ENDIAN
514 bool "Sibyte BCM91120x-Carmel"
515 depends on EXPERIMENTAL
518 select SIBYTE_BCM1120
520 select SYS_HAS_CPU_SB1
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_LITTLE_ENDIAN
524 config SIBYTE_PTSWARM
525 bool "Sibyte BCM91250PT-PTSWARM"
526 depends on EXPERIMENTAL
529 select NR_CPUS_DEFAULT_2
532 select SYS_HAS_CPU_SB1
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_HIGHMEM
535 select SYS_SUPPORTS_LITTLE_ENDIAN
537 config SIBYTE_LITTLESUR
538 bool "Sibyte BCM91250C2-LittleSur"
539 depends on EXPERIMENTAL
542 select NR_CPUS_DEFAULT_2
545 select SYS_HAS_CPU_SB1
546 select SYS_SUPPORTS_BIG_ENDIAN
547 select SYS_SUPPORTS_HIGHMEM
548 select SYS_SUPPORTS_LITTLE_ENDIAN
551 bool "Sibyte BCM91120C-CRhine"
552 depends on EXPERIMENTAL
555 select SIBYTE_BCM1120
557 select SYS_HAS_CPU_SB1
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_LITTLE_ENDIAN
562 bool "Sibyte BCM91125C-CRhone"
563 depends on EXPERIMENTAL
566 select SIBYTE_BCM1125
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
574 bool "SNI RM200/300/400"
575 select ARC if CPU_LITTLE_ENDIAN
576 select ARC32 if CPU_LITTLE_ENDIAN
577 select ARCH_MAY_HAVE_PC_FDC
579 select DMA_NONCOHERENT
580 select GENERIC_ISA_DMA
587 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
588 select SYS_HAS_CPU_R4X00
589 select SYS_HAS_CPU_R5000
590 select SYS_HAS_CPU_R10000
591 select R5000_CPU_SCACHE
592 select SYS_HAS_EARLY_PRINTK
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_HIGHMEM
597 select SYS_SUPPORTS_LITTLE_ENDIAN
599 The SNI RM200/300/400 are MIPS-based machines manufactured by
600 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
601 Technology and now in turn merged with Fujitsu. Say Y here to
602 support this machine type.
604 config TOSHIBA_JMR3927
605 bool "Toshiba JMR-TX3927 board"
606 select DMA_NONCOHERENT
610 select SYS_HAS_CPU_TX39XX
611 select SYS_SUPPORTS_32BIT_KERNEL
612 select SYS_SUPPORTS_LITTLE_ENDIAN
613 select SYS_SUPPORTS_BIG_ENDIAN
614 select GENERIC_HARDIRQS_NO__DO_IRQ
616 config TOSHIBA_RBTX4927
617 bool "Toshiba TBTX49[23]7 board"
618 select DMA_NONCOHERENT
619 select HAS_TXX9_SERIAL
623 select SYS_HAS_CPU_TX49XX
624 select SYS_SUPPORTS_32BIT_KERNEL
625 select SYS_SUPPORTS_64BIT_KERNEL
626 select SYS_SUPPORTS_LITTLE_ENDIAN
627 select SYS_SUPPORTS_BIG_ENDIAN
628 select SYS_SUPPORTS_KGDB
629 select GENERIC_HARDIRQS_NO__DO_IRQ
631 This Toshiba board is based on the TX4927 processor. Say Y here to
632 support this machine type
634 config TOSHIBA_RBTX4938
635 bool "Toshiba RBTX4938 board"
636 select HAVE_STD_PC_SERIAL_PORT
637 select DMA_NONCOHERENT
638 select GENERIC_ISA_DMA
639 select HAS_TXX9_SERIAL
643 select SYS_HAS_CPU_TX49XX
644 select SYS_SUPPORTS_32BIT_KERNEL
645 select SYS_SUPPORTS_LITTLE_ENDIAN
646 select SYS_SUPPORTS_BIG_ENDIAN
647 select SYS_SUPPORTS_KGDB
648 select GENERIC_HARDIRQS_NO__DO_IRQ
651 This Toshiba board is based on the TX4938 processor. Say Y here to
652 support this machine type
656 source "arch/mips/au1000/Kconfig"
657 source "arch/mips/ddb5xxx/Kconfig"
658 source "arch/mips/jazz/Kconfig"
659 source "arch/mips/pmc-sierra/Kconfig"
660 source "arch/mips/sgi-ip27/Kconfig"
661 source "arch/mips/sibyte/Kconfig"
662 source "arch/mips/tx4927/Kconfig"
663 source "arch/mips/tx4938/Kconfig"
664 source "arch/mips/vr41xx/Kconfig"
665 source "arch/mips/philips/pnx8550/common/Kconfig"
669 config RWSEM_GENERIC_SPINLOCK
673 config RWSEM_XCHGADD_ALGORITHM
676 config ARCH_HAS_ILOG2_U32
680 config ARCH_HAS_ILOG2_U64
684 config GENERIC_FIND_NEXT_BIT
688 config GENERIC_HWEIGHT
692 config GENERIC_CALIBRATE_DELAY
700 config SCHED_NO_NO_OMIT_FRAME_POINTER
704 config GENERIC_HARDIRQS_NO__DO_IRQ
709 # Select some configuration options automatically based on user selections.
714 config ARCH_MAY_HAVE_PC_FDC
728 select DMA_NEED_PCI_MAP_STATE
730 config DMA_NONCOHERENT
732 select DMA_NEED_PCI_MAP_STATE
734 config DMA_NEED_PCI_MAP_STATE
738 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
739 depends on SYS_HAS_EARLY_PRINTK
742 This option enables special console drivers which allow the kernel
743 to print messages very early in the bootup process.
745 This is useful for kernel debugging when your machine crashes very
746 early before the console code is initialized. For normal operation,
747 it is not recommended because it looks ugly on some machines and
748 doesn't cooperate with an X server. You should normally say N here,
749 unless you want to debug such a crash.
751 config SYS_HAS_EARLY_PRINTK
754 config GENERIC_ISA_DMA
767 config MIPS_DISABLE_OBSOLETE_IDE
773 config GENERIC_ISA_DMA_SUPPORT_BROKEN
781 # Endianess selection. Sufficiently obscure so many users don't know what to
782 # answer,so we try hard to limit the available choices. Also the use of a
783 # choice statement should be more obvious to the user.
786 prompt "Endianess selection"
788 Some MIPS machines can be configured for either little or big endian
789 byte order. These modes require different kernels and a different
790 Linux distribution. In general there is one preferred byteorder for a
791 particular system but some systems are just as commonly used in the
792 one or the other endianness.
794 config CPU_BIG_ENDIAN
796 depends on SYS_SUPPORTS_BIG_ENDIAN
798 config CPU_LITTLE_ENDIAN
800 depends on SYS_SUPPORTS_LITTLE_ENDIAN
805 config SYS_SUPPORTS_APM_EMULATION
808 config SYS_SUPPORTS_BIG_ENDIAN
811 config SYS_SUPPORTS_LITTLE_ENDIAN
832 config DDB5XXX_COMMON
834 select SYS_SUPPORTS_KGDB
836 config MIPS_BOARDS_GEN
839 config PCI_GT64XXX_PCI0
842 config NO_EXCEPT_FILL
847 select HAS_TXX9_SERIAL
862 select DMA_NONCOHERENT
864 select SYS_HAS_CPU_MIPS32_R1
865 select SYS_HAS_EARLY_PRINTK
866 select SYS_SUPPORTS_32BIT_KERNEL
867 select GENERIC_HARDIRQS_NO__DO_IRQ
868 select SYS_SUPPORTS_KGDB
883 # Unfortunately not all GT64120 systems run the chip at the same clock.
884 # As the user for the clock rate and try to minimize the available options.
887 prompt "Galileo Chip Clock"
888 depends on MOMENCO_OCELOT
889 default SYSCLK_100 if MOMENCO_OCELOT
892 bool "100" if MOMENCO_OCELOT
902 config MIPS_L1_CACHE_SHIFT
904 default "4" if MACH_DECSTATION
905 default "7" if SGI_IP27 || SNI_RM
906 default "4" if PMC_MSP4200_EVAL
909 config HAVE_STD_PC_SERIAL_PORT
913 bool "ARC console support"
914 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
918 depends on MACH_JAZZ || SNI_RM || SGI_IP32
923 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
940 depends on SYS_HAS_CPU_LOONGSON2
941 select CPU_SUPPORTS_32BIT_KERNEL
942 select CPU_SUPPORTS_64BIT_KERNEL
943 select CPU_SUPPORTS_HIGHMEM
945 The Loongson 2E processor implements the MIPS III instruction set
946 with many extensions.
949 bool "MIPS32 Release 1"
950 depends on SYS_HAS_CPU_MIPS32_R1
952 select CPU_HAS_PREFETCH
953 select CPU_SUPPORTS_32BIT_KERNEL
954 select CPU_SUPPORTS_HIGHMEM
956 Choose this option to build a kernel for release 1 or later of the
957 MIPS32 architecture. Most modern embedded systems with a 32-bit
958 MIPS processor are based on a MIPS32 processor. If you know the
959 specific type of processor in your system, choose those that one
960 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
961 Release 2 of the MIPS32 architecture is available since several
962 years so chances are you even have a MIPS32 Release 2 processor
963 in which case you should choose CPU_MIPS32_R2 instead for better
967 bool "MIPS32 Release 2"
968 depends on SYS_HAS_CPU_MIPS32_R2
970 select CPU_HAS_PREFETCH
971 select CPU_SUPPORTS_32BIT_KERNEL
972 select CPU_SUPPORTS_HIGHMEM
974 Choose this option to build a kernel for release 2 or later of the
975 MIPS32 architecture. Most modern embedded systems with a 32-bit
976 MIPS processor are based on a MIPS32 processor. If you know the
977 specific type of processor in your system, choose those that one
978 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
981 bool "MIPS64 Release 1"
982 depends on SYS_HAS_CPU_MIPS64_R1
984 select CPU_HAS_PREFETCH
985 select CPU_SUPPORTS_32BIT_KERNEL
986 select CPU_SUPPORTS_64BIT_KERNEL
987 select CPU_SUPPORTS_HIGHMEM
989 Choose this option to build a kernel for release 1 or later of the
990 MIPS64 architecture. Many modern embedded systems with a 64-bit
991 MIPS processor are based on a MIPS64 processor. If you know the
992 specific type of processor in your system, choose those that one
993 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
994 Release 2 of the MIPS64 architecture is available since several
995 years so chances are you even have a MIPS64 Release 2 processor
996 in which case you should choose CPU_MIPS64_R2 instead for better
1000 bool "MIPS64 Release 2"
1001 depends on SYS_HAS_CPU_MIPS64_R2
1003 select CPU_HAS_PREFETCH
1004 select CPU_SUPPORTS_32BIT_KERNEL
1005 select CPU_SUPPORTS_64BIT_KERNEL
1006 select CPU_SUPPORTS_HIGHMEM
1008 Choose this option to build a kernel for release 2 or later of the
1009 MIPS64 architecture. Many modern embedded systems with a 64-bit
1010 MIPS processor are based on a MIPS64 processor. If you know the
1011 specific type of processor in your system, choose those that one
1012 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1016 depends on SYS_HAS_CPU_R3000
1018 select CPU_SUPPORTS_32BIT_KERNEL
1019 select CPU_SUPPORTS_HIGHMEM
1021 Please make sure to pick the right CPU type. Linux/MIPS is not
1022 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1023 *not* work on R4000 machines and vice versa. However, since most
1024 of the supported machines have an R4000 (or similar) CPU, R4x00
1025 might be a safe bet. If the resulting kernel does not work,
1026 try to recompile with R3000.
1030 depends on SYS_HAS_CPU_TX39XX
1031 select CPU_SUPPORTS_32BIT_KERNEL
1035 depends on SYS_HAS_CPU_VR41XX
1036 select CPU_SUPPORTS_32BIT_KERNEL
1037 select CPU_SUPPORTS_64BIT_KERNEL
1039 The options selects support for the NEC VR4100 series of processors.
1040 Only choose this option if you have one of these processors as a
1041 kernel built with this option will not run on any other type of
1042 processor or vice versa.
1046 depends on SYS_HAS_CPU_R4300
1048 select CPU_SUPPORTS_32BIT_KERNEL
1049 select CPU_SUPPORTS_64BIT_KERNEL
1051 MIPS Technologies R4300-series processors.
1055 depends on SYS_HAS_CPU_R4X00
1057 select CPU_SUPPORTS_32BIT_KERNEL
1058 select CPU_SUPPORTS_64BIT_KERNEL
1060 MIPS Technologies R4000-series processors other than 4300, including
1061 the R4000, R4400, R4600, and 4700.
1065 depends on SYS_HAS_CPU_TX49XX
1067 select CPU_HAS_PREFETCH
1068 select CPU_SUPPORTS_32BIT_KERNEL
1069 select CPU_SUPPORTS_64BIT_KERNEL
1073 depends on SYS_HAS_CPU_R5000
1075 select CPU_SUPPORTS_32BIT_KERNEL
1076 select CPU_SUPPORTS_64BIT_KERNEL
1078 MIPS Technologies R5000-series processors other than the Nevada.
1082 depends on SYS_HAS_CPU_R5432
1084 select CPU_SUPPORTS_32BIT_KERNEL
1085 select CPU_SUPPORTS_64BIT_KERNEL
1089 depends on EXPERIMENTAL
1091 depends on SYS_HAS_CPU_R6000
1092 select CPU_SUPPORTS_32BIT_KERNEL
1094 MIPS Technologies R6000 and R6000A series processors. Note these
1095 processors are extremely rare and the support for them is incomplete.
1099 depends on SYS_HAS_CPU_NEVADA
1101 select CPU_SUPPORTS_32BIT_KERNEL
1102 select CPU_SUPPORTS_64BIT_KERNEL
1104 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1108 depends on EXPERIMENTAL
1109 depends on SYS_HAS_CPU_R8000
1111 select CPU_HAS_PREFETCH
1112 select CPU_SUPPORTS_64BIT_KERNEL
1114 MIPS Technologies R8000 processors. Note these processors are
1115 uncommon and the support for them is incomplete.
1119 depends on SYS_HAS_CPU_R10000
1121 select CPU_HAS_PREFETCH
1122 select CPU_SUPPORTS_32BIT_KERNEL
1123 select CPU_SUPPORTS_64BIT_KERNEL
1124 select CPU_SUPPORTS_HIGHMEM
1126 MIPS Technologies R10000-series processors.
1130 depends on SYS_HAS_CPU_RM7000
1132 select CPU_HAS_PREFETCH
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_64BIT_KERNEL
1135 select CPU_SUPPORTS_HIGHMEM
1139 depends on SYS_HAS_CPU_RM9000
1141 select CPU_HAS_PREFETCH
1142 select CPU_SUPPORTS_32BIT_KERNEL
1143 select CPU_SUPPORTS_64BIT_KERNEL
1144 select CPU_SUPPORTS_HIGHMEM
1145 select WEAK_ORDERING
1149 depends on SYS_HAS_CPU_SB1
1151 select CPU_SUPPORTS_32BIT_KERNEL
1152 select CPU_SUPPORTS_64BIT_KERNEL
1153 select CPU_SUPPORTS_HIGHMEM
1154 select WEAK_ORDERING
1158 config SYS_HAS_CPU_LOONGSON2
1161 config SYS_HAS_CPU_MIPS32_R1
1164 config SYS_HAS_CPU_MIPS32_R2
1167 config SYS_HAS_CPU_MIPS64_R1
1170 config SYS_HAS_CPU_MIPS64_R2
1173 config SYS_HAS_CPU_R3000
1176 config SYS_HAS_CPU_TX39XX
1179 config SYS_HAS_CPU_VR41XX
1182 config SYS_HAS_CPU_R4300
1185 config SYS_HAS_CPU_R4X00
1188 config SYS_HAS_CPU_TX49XX
1191 config SYS_HAS_CPU_R5000
1194 config SYS_HAS_CPU_R5432
1197 config SYS_HAS_CPU_R6000
1200 config SYS_HAS_CPU_NEVADA
1203 config SYS_HAS_CPU_R8000
1206 config SYS_HAS_CPU_R10000
1209 config SYS_HAS_CPU_RM7000
1212 config SYS_HAS_CPU_RM9000
1215 config SYS_HAS_CPU_SB1
1218 config WEAK_ORDERING
1223 # These two indicate any level of the MIPS32 and MIPS64 architecture
1227 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1231 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1234 # These two indicate the revision of the architecture, either Release 1 or Release 2
1238 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1242 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1244 config SYS_SUPPORTS_32BIT_KERNEL
1246 config SYS_SUPPORTS_64BIT_KERNEL
1248 config CPU_SUPPORTS_32BIT_KERNEL
1250 config CPU_SUPPORTS_64BIT_KERNEL
1257 prompt "Kernel code model"
1259 You should only select this option if you have a workload that
1260 actually benefits from 64-bit processing or if your machine has
1261 large memory. You will only be presented a single option in this
1262 menu if your system does not support both 32-bit and 64-bit kernels.
1265 bool "32-bit kernel"
1266 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1269 Select this option if you want to build a 32-bit kernel.
1271 bool "64-bit kernel"
1272 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1274 Select this option if you want to build a 64-bit kernel.
1279 prompt "Kernel page size"
1280 default PAGE_SIZE_4KB
1282 config PAGE_SIZE_4KB
1285 This option select the standard 4kB Linux page size. On some
1286 R3000-family processors this is the only available page size. Using
1287 4kB page size will minimize memory consumption and is therefore
1288 recommended for low memory systems.
1290 config PAGE_SIZE_8KB
1292 depends on EXPERIMENTAL && CPU_R8000
1294 Using 8kB page size will result in higher performance kernel at
1295 the price of higher memory consumption. This option is available
1296 only on the R8000 processor. Not that at the time of this writing
1297 this option is still high experimental; there are also issues with
1298 compatibility of user applications.
1300 config PAGE_SIZE_16KB
1302 depends on !CPU_R3000 && !CPU_TX39XX
1304 Using 16kB page size will result in higher performance kernel at
1305 the price of higher memory consumption. This option is available on
1306 all non-R3000 family processors. Note that you will need a suitable
1307 Linux distribution to support this.
1309 config PAGE_SIZE_64KB
1311 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1313 Using 64kB page size will result in higher performance kernel at
1314 the price of higher memory consumption. This option is available on
1315 all non-R3000 family processor. Not that at the time of this
1316 writing this option is still high experimental.
1323 config IP22_CPU_SCACHE
1328 # Support for a MIPS32 / MIPS64 style S-caches
1330 config MIPS_CPU_SCACHE
1334 config R5000_CPU_SCACHE
1338 config RM7000_CPU_SCACHE
1342 config SIBYTE_DMA_PAGEOPS
1343 bool "Use DMA to clear/copy pages"
1346 Instead of using the CPU to zero and copy pages, use a Data Mover
1347 channel. These DMA channels are otherwise unused by the standard
1348 SiByte Linux port. Seems to give a small performance benefit.
1350 config CPU_HAS_PREFETCH
1354 prompt "MIPS MT options"
1356 config MIPS_MT_DISABLED
1357 bool "Disable multithreading support."
1359 Use this option if your workload can't take advantage of
1360 MIPS hardware multithreading support. On systems that don't have
1361 the option of an MT-enabled processor this option will be the only
1362 option in this menu.
1365 bool "Use 1 TC on each available VPE for SMP"
1366 depends on SYS_SUPPORTS_MULTITHREADING
1367 select CPU_MIPSR2_IRQ_VI
1368 select CPU_MIPSR2_IRQ_EI
1369 select CPU_MIPSR2_SRS
1371 select NR_CPUS_DEFAULT_2
1373 select SYS_SUPPORTS_SMP
1375 This is a kernel model which is also known a VSMP or lately
1376 has been marketesed into SMVP.
1379 bool "SMTC: Use all TCs on all VPEs for SMP"
1380 depends on CPU_MIPS32_R2
1381 #depends on CPU_MIPS64_R2 # once there is hardware ...
1382 depends on SYS_SUPPORTS_MULTITHREADING
1383 select CPU_MIPSR2_IRQ_VI
1384 select CPU_MIPSR2_IRQ_EI
1385 select CPU_MIPSR2_SRS
1387 select NR_CPUS_DEFAULT_8
1389 select SYS_SUPPORTS_SMP
1391 This is a kernel model which is known a SMTC or lately has been
1392 marketesed into SMVP.
1394 config MIPS_VPE_LOADER
1395 bool "VPE loader support."
1396 depends on SYS_SUPPORTS_MULTITHREADING
1397 select CPU_MIPSR2_IRQ_VI
1398 select CPU_MIPSR2_IRQ_EI
1399 select CPU_MIPSR2_SRS
1402 Includes a loader for loading an elf relocatable object
1403 onto another VPE and running it.
1410 config SYS_SUPPORTS_MULTITHREADING
1413 config MIPS_MT_FPAFF
1414 bool "Dynamic FPU affinity for FP-intensive threads"
1418 config MIPS_MT_SMTC_INSTANT_REPLAY
1419 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1420 depends on MIPS_MT_SMTC && !PREEMPT
1423 SMTC pseudo-interrupts between TCs are deferred and queued
1424 if the target TC is interrupt-inhibited (IXMT). In the first
1425 SMTC prototypes, these queued IPIs were serviced on return
1426 to user mode, or on entry into the kernel idle loop. The
1427 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1428 processing, which adds runtime overhead (hence the option to turn
1429 it off), but ensures that IPIs are handled promptly even under
1430 heavy I/O interrupt load.
1432 config MIPS_VPE_LOADER_TOM
1433 bool "Load VPE program into memory hidden from linux"
1434 depends on MIPS_VPE_LOADER
1437 The loader can use memory that is present but has been hidden from
1438 Linux using the kernel command line option "mem=xxMB". It's up to
1439 you to ensure the amount you put in the option and the space your
1440 program requires is less or equal to the amount physically present.
1442 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1443 config MIPS_VPE_APSP_API
1444 bool "Enable support for AP/SP API (RTLX)"
1445 depends on MIPS_VPE_LOADER
1448 config MIPS_APSP_KSPD
1450 depends on MIPS_VPE_APSP_API
1453 KSPD is a kernel daemon that accepts syscall requests from the SP
1454 side, actions them and returns the results. It also handles the
1455 "exit" syscall notifying other kernel modules the SP program is
1456 exiting. You probably want to say yes here.
1458 config SB1_PASS_1_WORKAROUNDS
1460 depends on CPU_SB1_PASS_1
1463 config SB1_PASS_2_WORKAROUNDS
1465 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1468 config SB1_PASS_2_1_WORKAROUNDS
1470 depends on CPU_SB1 && CPU_SB1_PASS_2
1473 config 64BIT_PHYS_ADDR
1474 bool "Support for 64-bit physical address space"
1475 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1480 config CPU_HAS_SMARTMIPS
1481 depends on SYS_SUPPORTS_SMARTMIPS
1482 bool "Support for the SmartMIPS ASE"
1484 SmartMIPS is a extension of the MIPS32 architecture aimed at
1485 increased security at both hardware and software level for
1486 smartcards. Enabling this option will allow proper use of the
1487 SmartMIPS instructions by Linux applications. However a kernel with
1488 this option will not work on a MIPS core without SmartMIPS core. If
1489 you don't know you probably don't have SmartMIPS and should say N
1495 config 64BIT_CONTEXT
1496 bool "Save 64bit integer registers"
1497 depends on 32BIT && CPU_LOONGSON2
1499 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1500 registers can still be accessed as 64bit, mainly for multimedia
1501 instructions. We must have all 64bit save/restored to make sure
1502 those instructions to get correct result.
1505 # Vectored interrupt mode is an R2 feature
1507 config CPU_MIPSR2_IRQ_VI
1511 # Extended interrupt mode is an R2 feature
1513 config CPU_MIPSR2_IRQ_EI
1517 # Shadow registers are an R2 feature
1519 config CPU_MIPSR2_SRS
1524 depends on !CPU_R3000
1528 # Use the generic interrupt handling code in kernel/irq/:
1530 config GENERIC_HARDIRQS
1534 config GENERIC_IRQ_PROBE
1542 # - Highmem only makes sense for the 32-bit kernel.
1543 # - The current highmem code will only work properly on physically indexed
1544 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1545 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1546 # moment we protect the user and offer the highmem option only on machines
1547 # where it's known to be safe. This will not offer highmem on a few systems
1548 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1549 # indexed CPUs but we're playing safe.
1550 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1551 # know they might have memory configurations that could make use of highmem
1555 bool "High Memory Support"
1556 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1558 config CPU_SUPPORTS_HIGHMEM
1561 config SYS_SUPPORTS_HIGHMEM
1564 config SYS_SUPPORTS_SMARTMIPS
1567 config ARCH_FLATMEM_ENABLE
1571 config ARCH_DISCONTIGMEM_ENABLE
1573 default y if SGI_IP27
1575 Say Y to support efficient handling of discontiguous physical memory,
1576 for architectures which are either NUMA (Non-Uniform Memory Access)
1577 or have huge holes in the physical address space for other reasons.
1578 See <file:Documentation/vm/numa> for more.
1580 config ARCH_SPARSEMEM_ENABLE
1582 select SPARSEMEM_STATIC
1586 depends on SYS_SUPPORTS_NUMA
1588 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1589 Access). This option improves performance on systems with more
1590 than two nodes; on two node systems it is generally better to
1591 leave it disabled; on single node systems disable this option
1594 config SYS_SUPPORTS_NUMA
1600 depends on NEED_MULTIPLE_NODES
1605 bool "Multi-Processing support"
1606 depends on SYS_SUPPORTS_SMP
1609 This enables support for systems with more than one CPU. If you have
1610 a system with only one CPU, like most personal computers, say N. If
1611 you have a system with more than one CPU, say Y.
1613 If you say N here, the kernel will run on single and multiprocessor
1614 machines, but will use only one CPU of a multiprocessor machine. If
1615 you say Y here, the kernel will run on many, but not all,
1616 singleprocessor machines. On a singleprocessor machine, the kernel
1617 will run faster if you say N here.
1619 People using multiprocessor machines who say Y here should also say
1620 Y to "Enhanced Real Time Clock Support", below.
1622 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1623 available at <http://www.tldp.org/docs.html#howto>.
1625 If you don't know what to do here, say N.
1627 config SYS_SUPPORTS_SMP
1630 config NR_CPUS_DEFAULT_1
1633 config NR_CPUS_DEFAULT_2
1636 config NR_CPUS_DEFAULT_4
1639 config NR_CPUS_DEFAULT_8
1642 config NR_CPUS_DEFAULT_16
1645 config NR_CPUS_DEFAULT_32
1648 config NR_CPUS_DEFAULT_64
1652 int "Maximum number of CPUs (2-64)"
1653 range 1 64 if NR_CPUS_DEFAULT_1
1655 default "1" if NR_CPUS_DEFAULT_1
1656 default "2" if NR_CPUS_DEFAULT_2
1657 default "4" if NR_CPUS_DEFAULT_4
1658 default "8" if NR_CPUS_DEFAULT_8
1659 default "16" if NR_CPUS_DEFAULT_16
1660 default "32" if NR_CPUS_DEFAULT_32
1661 default "64" if NR_CPUS_DEFAULT_64
1663 This allows you to specify the maximum number of CPUs which this
1664 kernel will support. The maximum supported value is 32 for 32-bit
1665 kernel and 64 for 64-bit kernels; the minimum value which makes
1666 sense is 1 for Qemu (useful only for kernel debugging purposes)
1667 and 2 for all others.
1669 This is purely to save memory - each supported CPU adds
1670 approximately eight kilobytes to the kernel image. For best
1671 performance should round up your number of processors to the next
1675 # Timer Interrupt Frequency Configuration
1679 prompt "Timer frequency"
1682 Allows the configuration of the timer frequency.
1685 bool "48 HZ" if SYS_SUPPORTS_48HZ
1688 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1691 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1694 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1697 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1700 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1703 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1707 config SYS_SUPPORTS_48HZ
1710 config SYS_SUPPORTS_100HZ
1713 config SYS_SUPPORTS_128HZ
1716 config SYS_SUPPORTS_250HZ
1719 config SYS_SUPPORTS_256HZ
1722 config SYS_SUPPORTS_1000HZ
1725 config SYS_SUPPORTS_1024HZ
1728 config SYS_SUPPORTS_ARBIT_HZ
1730 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1731 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1732 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1733 !SYS_SUPPORTS_1024HZ
1738 default 100 if HZ_100
1739 default 128 if HZ_128
1740 default 250 if HZ_250
1741 default 256 if HZ_256
1742 default 1000 if HZ_1000
1743 default 1024 if HZ_1024
1745 source "kernel/Kconfig.preempt"
1747 config MIPS_INSANE_LARGE
1748 bool "Support for large 64-bit configurations"
1749 depends on CPU_R10000 && 64BIT
1751 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1752 previous 64-bit processors which only supported 40 bit / 1TB. If you
1753 need processes of more than 1TB virtual address space, say Y here.
1754 This will result in additional memory usage, so it is not
1755 recommended for normal users.
1758 bool "Kexec system call (EXPERIMENTAL)"
1759 depends on EXPERIMENTAL
1761 kexec is a system call that implements the ability to shutdown your
1762 current kernel, and to start another kernel. It is like a reboot
1763 but it is independent of the system firmware. And like a reboot
1764 you can start any kernel with it, not just Linux.
1766 The name comes from the similiarity to the exec system call.
1768 It is an ongoing process to be certain the hardware in a machine
1769 is properly shutdown, so do not be surprised if this code does not
1770 initially work for you. It may help to enable device hotplugging
1771 support. As of this writing the exact hardware interface is
1772 strongly in flux, so no good recommendation can be made.
1775 bool "Enable seccomp to safely compute untrusted bytecode"
1776 depends on PROC_FS && BROKEN
1779 This kernel feature is useful for number crunching applications
1780 that may need to compute untrusted bytecode during their
1781 execution. By using pipes or other transports made available to
1782 the process as file descriptors supporting the read/write
1783 syscalls, it's possible to isolate those applications in
1784 their own address space using seccomp. Once seccomp is
1785 enabled via /proc/<pid>/seccomp, it cannot be disabled
1786 and the task is only allowed to execute a few safe syscalls
1787 defined by each seccomp mode.
1789 If unsure, say Y. Only embedded should say N here.
1793 config RWSEM_GENERIC_SPINLOCK
1797 config LOCKDEP_SUPPORT
1801 config STACKTRACE_SUPPORT
1805 source "init/Kconfig"
1807 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1815 bool "Support for PCI controller"
1816 depends on HW_HAS_PCI
1818 Find out whether you have a PCI motherboard. PCI is the name of a
1819 bus system, i.e. the way the CPU talks to the other stuff inside
1820 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1823 The PCI-HOWTO, available from
1824 <http://www.tldp.org/docs.html#howto>, contains valuable
1825 information about which PCI hardware does work under Linux and which
1832 source "drivers/pci/Kconfig"
1835 # ISA support is now enabled via select. Too many systems still have the one
1836 # or other ISA chip on the board that users don't know about so don't expect
1837 # users to choose the right thing ...
1844 depends on HW_HAS_EISA
1846 select GENERIC_ISA_DMA
1848 The Extended Industry Standard Architecture (EISA) bus was
1849 developed as an open alternative to the IBM MicroChannel bus.
1851 The EISA bus provided some of the features of the IBM MicroChannel
1852 bus while maintaining backward compatibility with cards made for
1853 the older ISA bus. The EISA bus saw limited use between 1988 and
1854 1995 when it was made obsolete by the PCI bus.
1856 Say Y here if you are building a kernel for an EISA-based machine.
1860 source "drivers/eisa/Kconfig"
1863 bool "TURBOchannel support"
1864 depends on MACH_DECSTATION
1866 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1867 processors. Documentation on writing device drivers for TurboChannel
1869 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1872 # bool "Access.Bus support"
1882 source "drivers/pcmcia/Kconfig"
1884 source "drivers/pci/hotplug/Kconfig"
1888 menu "Executable file formats"
1890 source "fs/Kconfig.binfmt"
1896 bool "Use 64-bit ELF format for building"
1899 A 64-bit kernel is usually built using the 64-bit ELF binary object
1900 format as it's one that allows arbitrary 64-bit constructs. For
1901 kernels that are loaded within the KSEG compatibility segments the
1902 32-bit ELF format can optionally be used resulting in a somewhat
1903 smaller binary, but this option is not explicitly supported by the
1904 toolchain and since binutils 2.14 it does not even work at all.
1906 Say Y to use the 64-bit format or N to use the 32-bit one.
1911 bool "Include IRIX binary compatibility"
1912 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1914 config MIPS32_COMPAT
1915 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1918 Select this option if you want Linux/MIPS 32-bit binary
1919 compatibility. Since all software available for Linux/MIPS is
1920 currently 32-bit you should say Y here.
1924 depends on MIPS32_COMPAT
1927 config SYSVIPC_COMPAT
1929 depends on COMPAT && SYSVIPC
1933 bool "Kernel support for o32 binaries"
1934 depends on MIPS32_COMPAT
1936 Select this option if you want to run o32 binaries. These are pure
1937 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1938 existing binaries are in this format.
1943 bool "Kernel support for n32 binaries"
1944 depends on MIPS32_COMPAT
1946 Select this option if you want to run n32 binaries. These are
1947 64-bit binaries using 32-bit quantities for addressing and certain
1948 data that would normally be 64-bit. They are used in special
1955 default y if MIPS32_O32 || MIPS32_N32
1959 menu "Power management options"
1961 source "kernel/power/Kconfig"
1965 source "net/Kconfig"
1967 source "drivers/Kconfig"
1971 source "arch/mips/oprofile/Kconfig"
1973 source "arch/mips/Kconfig.debug"
1975 source "security/Kconfig"
1977 source "crypto/Kconfig"
1979 source "lib/Kconfig"