4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "4G Systems MTX-1 board"
20 select DMA_NONCOHERENT
22 select RESOURCES_64BIT if PCI
24 select SYS_HAS_CPU_MIPS32_R1
25 select SYS_SUPPORTS_LITTLE_ENDIAN
28 bool "AMD Alchemy Bosporus board"
30 select DMA_NONCOHERENT
31 select SYS_HAS_CPU_MIPS32_R1
32 select SYS_SUPPORTS_LITTLE_ENDIAN
35 bool "AMD Alchemy PB1000 board"
37 select DMA_NONCOHERENT
39 select RESOURCES_64BIT if PCI
41 select SYS_HAS_CPU_MIPS32_R1
42 select SYS_SUPPORTS_LITTLE_ENDIAN
45 bool "AMD Alchemy PB1100 board"
47 select DMA_NONCOHERENT
49 select RESOURCES_64BIT if PCI
51 select SYS_HAS_CPU_MIPS32_R1
52 select SYS_SUPPORTS_LITTLE_ENDIAN
55 bool "AMD Alchemy PB1500 board"
57 select DMA_NONCOHERENT
59 select RESOURCES_64BIT if PCI
60 select SYS_HAS_CPU_MIPS32_R1
61 select SYS_SUPPORTS_LITTLE_ENDIAN
64 bool "AMD Alchemy PB1550 board"
66 select DMA_NONCOHERENT
68 select MIPS_DISABLE_OBSOLETE_IDE
69 select RESOURCES_64BIT if PCI
70 select SYS_HAS_CPU_MIPS32_R1
71 select SYS_SUPPORTS_LITTLE_ENDIAN
74 bool "AMD Alchemy PB1200 board"
76 select DMA_NONCOHERENT
77 select MIPS_DISABLE_OBSOLETE_IDE
78 select RESOURCES_64BIT if PCI
79 select SYS_HAS_CPU_MIPS32_R1
80 select SYS_SUPPORTS_LITTLE_ENDIAN
83 bool "AMD Alchemy DB1000 board"
85 select DMA_NONCOHERENT
87 select RESOURCES_64BIT if PCI
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_SUPPORTS_LITTLE_ENDIAN
92 bool "AMD Alchemy DB1100 board"
94 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_MIPS32_R1
96 select SYS_SUPPORTS_LITTLE_ENDIAN
99 bool "AMD Alchemy DB1500 board"
101 select DMA_NONCOHERENT
103 select MIPS_DISABLE_OBSOLETE_IDE
104 select RESOURCES_64BIT if PCI
105 select SYS_HAS_CPU_MIPS32_R1
106 select SYS_SUPPORTS_BIG_ENDIAN
107 select SYS_SUPPORTS_LITTLE_ENDIAN
110 bool "AMD Alchemy DB1550 board"
113 select DMA_NONCOHERENT
114 select MIPS_DISABLE_OBSOLETE_IDE
115 select RESOURCES_64BIT if PCI
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_LITTLE_ENDIAN
120 bool "AMD Alchemy DB1200 board"
123 select MIPS_DISABLE_OBSOLETE_IDE
124 select SYS_HAS_CPU_MIPS32_R1
125 select SYS_SUPPORTS_LITTLE_ENDIAN
128 bool "AMD Alchemy Mirage board"
129 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_MIPS32_R1
132 select SYS_SUPPORTS_LITTLE_ENDIAN
135 bool "Basler eXcite smart camera"
142 select SYS_HAS_CPU_RM9000
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_64BIT_KERNEL
145 select SYS_SUPPORTS_BIG_ENDIAN
146 select SYS_SUPPORTS_KGDB
148 The eXcite is a smart camera platform manufactured by
149 Basler Vision Technologies AG.
151 config BASLER_EXCITE_PROTOTYPE
152 bool "Support for pre-release units"
153 depends on BASLER_EXCITE
156 Pre-series (prototype) units are different from later ones in
157 some ways. Select this option if you have one of these. Please
158 note that a kernel built with this option selected will not be
159 able to run on normal units.
163 select DMA_NONCOHERENT
167 select PCI_GT64XXX_PCI0
168 select SYS_HAS_CPU_NEVADA
169 select SYS_HAS_EARLY_PRINTK
170 select SYS_SUPPORTS_32BIT_KERNEL
171 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select GENERIC_HARDIRQS_NO__DO_IRQ
175 config MACH_DECSTATION
178 select DMA_NONCOHERENT
179 select SYS_HAS_EARLY_PRINTK
181 select SYS_HAS_CPU_R3000
182 select SYS_HAS_CPU_R4X00
183 select SYS_SUPPORTS_32BIT_KERNEL
184 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
185 select SYS_SUPPORTS_LITTLE_ENDIAN
186 select SYS_SUPPORTS_128HZ
187 select SYS_SUPPORTS_256HZ
188 select SYS_SUPPORTS_1024HZ
190 This enables support for DEC's MIPS based workstations. For details
191 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
192 DECstation porting pages on <http://decstation.unix-ag.org/>.
194 If you have one of the following DECstation Models you definitely
195 want to choose R4xx0 for the CPU Type:
202 otherwise choose R3000.
205 bool "Galileo EV64120 Evaluation board (EXPERIMENTAL)"
206 depends on EXPERIMENTAL
207 select DMA_NONCOHERENT
209 select PCI_GT64XXX_PCI0
210 select SYS_HAS_CPU_R5000
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_64BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_KGDB
216 This is an evaluation board based on the Galileo GT-64120
217 single-chip system controller that contains a MIPS R5000 compatible
218 core running at 75/100MHz. Their website is located at
219 <http://www.marvell.com/>. Say Y here if you wish to build a
220 kernel for this platform.
223 bool "Jazz family of machines"
226 select ARCH_MAY_HAVE_PC_FDC
227 select GENERIC_ISA_DMA
231 select SYS_HAS_CPU_R4X00
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
234 select SYS_SUPPORTS_100HZ
235 select GENERIC_HARDIRQS_NO__DO_IRQ
237 This a family of machines based on the MIPS R4030 chipset which was
238 used by several vendors to build RISC/os and Windows NT workstations.
239 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
240 Olivetti M700-10 workstations.
243 bool "LASAT Networks platforms"
244 select DMA_NONCOHERENT
245 select SYS_HAS_EARLY_PRINTK
247 select PCI_GT64XXX_PCI0
249 select R5000_CPU_SCACHE
250 select SYS_HAS_CPU_R5000
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
253 select SYS_SUPPORTS_LITTLE_ENDIAN
254 select GENERIC_HARDIRQS_NO__DO_IRQ
257 bool "MIPS Atlas board"
259 select DMA_NONCOHERENT
260 select SYS_HAS_EARLY_PRINTK
263 select MIPS_BOARDS_GEN
265 select PCI_GT64XXX_PCI0
267 select RM7000_CPU_SCACHE
269 select SYS_HAS_CPU_MIPS32_R1
270 select SYS_HAS_CPU_MIPS32_R2
271 select SYS_HAS_CPU_MIPS64_R1
272 select SYS_HAS_CPU_NEVADA
273 select SYS_HAS_CPU_RM7000
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_64BIT_KERNEL
276 select SYS_SUPPORTS_BIG_ENDIAN
277 select SYS_SUPPORTS_LITTLE_ENDIAN
278 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
279 select SYS_SUPPORTS_SMARTMIPS
280 select GENERIC_HARDIRQS_NO__DO_IRQ
282 This enables support for the MIPS Technologies Atlas evaluation
286 bool "MIPS Malta board"
287 select ARCH_MAY_HAVE_PC_FDC
289 select HAVE_STD_PC_SERIAL_PORT
290 select DMA_NONCOHERENT
291 select GENERIC_ISA_DMA
295 select MIPS_BOARDS_GEN
297 select MIPS_CPU_SCACHE
298 select PCI_GT64XXX_PCI0
301 select SYS_HAS_CPU_MIPS32_R1
302 select SYS_HAS_CPU_MIPS32_R2
303 select SYS_HAS_CPU_MIPS64_R1
304 select SYS_HAS_CPU_NEVADA
305 select SYS_HAS_CPU_RM7000
306 select SYS_HAS_EARLY_PRINTK
307 select SYS_SUPPORTS_32BIT_KERNEL
308 select SYS_SUPPORTS_64BIT_KERNEL
309 select SYS_SUPPORTS_BIG_ENDIAN
310 select SYS_SUPPORTS_LITTLE_ENDIAN
311 select SYS_SUPPORTS_MULTITHREADING
312 select SYS_SUPPORTS_SMARTMIPS
314 This enables support for the MIPS Technologies Malta evaluation
318 bool "MIPS SEAD board (EXPERIMENTAL)"
319 depends on EXPERIMENTAL
321 select DMA_NONCOHERENT
322 select SYS_HAS_EARLY_PRINTK
323 select MIPS_BOARDS_GEN
324 select SYS_HAS_CPU_MIPS32_R1
325 select SYS_HAS_CPU_MIPS32_R2
326 select SYS_HAS_CPU_MIPS64_R1
327 select SYS_SUPPORTS_32BIT_KERNEL
328 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
329 select SYS_SUPPORTS_BIG_ENDIAN
330 select SYS_SUPPORTS_LITTLE_ENDIAN
331 select SYS_SUPPORTS_SMARTMIPS
333 This enables support for the MIPS Technologies SEAD evaluation
337 bool "Wind River PPMC board"
340 select DMA_NONCOHERENT
342 select PCI_GT64XXX_PCI0
344 select SYS_HAS_CPU_MIPS32_R1
345 select SYS_HAS_CPU_MIPS32_R2
346 select SYS_HAS_CPU_MIPS64_R1
347 select SYS_HAS_CPU_NEVADA
348 select SYS_HAS_CPU_RM7000
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL
351 select SYS_SUPPORTS_BIG_ENDIAN
352 select SYS_SUPPORTS_LITTLE_ENDIAN
354 This enables support for the Wind River MIPS32 4KC PPMC evaluation
355 board, which is based on GT64120 bridge chip.
358 bool 'MIPS simulator (MIPSsim)'
359 select DMA_NONCOHERENT
360 select SYS_HAS_EARLY_PRINTK
362 select SYS_HAS_CPU_MIPS32_R1
363 select SYS_HAS_CPU_MIPS32_R2
364 select SYS_HAS_EARLY_PRINTK
365 select SYS_SUPPORTS_32BIT_KERNEL
366 select SYS_SUPPORTS_BIG_ENDIAN
367 select SYS_SUPPORTS_LITTLE_ENDIAN
369 This option enables support for MIPS Technologies MIPSsim software
372 config MOMENCO_OCELOT
373 bool "Momentum Ocelot board"
374 select DMA_NONCOHERENT
378 select PCI_GT64XXX_PCI0
379 select RM7000_CPU_SCACHE
381 select SYS_HAS_CPU_RM7000
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_64BIT_KERNEL
384 select SYS_SUPPORTS_BIG_ENDIAN
385 select SYS_SUPPORTS_KGDB
387 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
388 Momentum Computer <http://www.momenco.com/>.
390 config MOMENCO_OCELOT_3
391 bool "Momentum Ocelot-3 board"
393 select DMA_NONCOHERENT
399 select RM7000_CPU_SCACHE
401 select SYS_HAS_CPU_RM9000
402 select SYS_SUPPORTS_32BIT_KERNEL
403 select SYS_SUPPORTS_64BIT_KERNEL
404 select SYS_SUPPORTS_BIG_ENDIAN
406 The Ocelot-3 is based off Discovery III System Controller and
407 PMC-Sierra Rm79000 core.
409 config MOMENCO_OCELOT_C
410 bool "Momentum Ocelot-C board"
411 select DMA_NONCOHERENT
416 select RM7000_CPU_SCACHE
418 select SYS_HAS_CPU_RM7000
419 select SYS_SUPPORTS_32BIT_KERNEL
420 select SYS_SUPPORTS_64BIT_KERNEL
421 select SYS_SUPPORTS_BIG_ENDIAN
422 select GENERIC_HARDIRQS_NO__DO_IRQ
424 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
425 Momentum Computer <http://www.momenco.com/>.
428 bool "MyCable XXS1500 board"
429 select DMA_NONCOHERENT
431 select SYS_SUPPORTS_LITTLE_ENDIAN
434 bool "Philips PNX8550 based JBS board"
436 select SYS_SUPPORTS_LITTLE_ENDIAN
438 config PNX8550_STB810
439 bool "Support for Philips PNX8550 based STB810 board"
441 select SYS_SUPPORTS_LITTLE_ENDIAN
444 bool "NEC DDB Vrc-5477"
445 select DDB5XXX_COMMON
446 select DMA_NONCOHERENT
450 select SYS_HAS_CPU_R5432
451 select SYS_SUPPORTS_32BIT_KERNEL
452 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
453 select SYS_SUPPORTS_KGDB
454 select SYS_SUPPORTS_KGDB
455 select SYS_SUPPORTS_LITTLE_ENDIAN
457 This enables support for the R5432-based NEC DDB Vrc-5477,
458 or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
460 Features : kernel debugging, serial terminal, NFS root fs, on-board
461 ether port USB, AC97, PCI, etc.
464 bool "NEC VR4100 series based machines"
465 select SYS_HAS_CPU_VR41XX
466 select GENERIC_HARDIRQS_NO__DO_IRQ
469 bool "PMC-Sierra Yosemite eval board"
476 select SYS_HAS_CPU_RM9000
477 select SYS_HAS_EARLY_PRINTK
478 select SYS_SUPPORTS_32BIT_KERNEL
479 select SYS_SUPPORTS_64BIT_KERNEL
480 select SYS_SUPPORTS_BIG_ENDIAN
481 select SYS_SUPPORTS_HIGHMEM
482 select SYS_SUPPORTS_KGDB
483 select SYS_SUPPORTS_SMP
485 Yosemite is an evaluation board for the RM9000x2 processor
486 manufactured by PMC-Sierra.
491 select GENERIC_ISA_DMA
492 select HAVE_STD_PC_SERIAL_PORT
497 select SYS_HAS_CPU_MIPS32_R1
498 select SYS_SUPPORTS_32BIT_KERNEL
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
501 select ARCH_SPARSEMEM_ENABLE
502 select GENERIC_HARDIRQS_NO__DO_IRQ
503 select NR_CPUS_DEFAULT_1
504 select SYS_SUPPORTS_SMP
506 Qemu is a software emulator which among other architectures also
507 can simulate a MIPS32 4Kc system. This patch adds support for the
508 system architecture that currently is being simulated by Qemu. It
509 will eventually be removed again when Qemu has the capability to
510 simulate actual MIPS hardware platforms. More information on Qemu
511 can be found at http://www.linux-mips.org/wiki/Qemu.
514 bool "Support for NEC EMMA2RH Mark-eins"
515 select DMA_NONCOHERENT
519 select SYS_SUPPORTS_32BIT_KERNEL
520 select SYS_SUPPORTS_BIG_ENDIAN
521 select SYS_SUPPORTS_LITTLE_ENDIAN
522 select SYS_HAS_CPU_R5000
524 This enables support for the R5432-based NEC Mark-eins
525 boards with R5500 CPU.
528 bool "SGI IP22 (Indy/Indigo2)"
532 select DMA_NONCOHERENT
534 select IP22_CPU_SCACHE
536 select GENERIC_ISA_DMA_SUPPORT_BROKEN
538 select SYS_HAS_CPU_R4X00
539 select SYS_HAS_CPU_R5000
540 select SYS_HAS_EARLY_PRINTK
541 select SYS_SUPPORTS_32BIT_KERNEL
542 select SYS_SUPPORTS_64BIT_KERNEL
543 select SYS_SUPPORTS_BIG_ENDIAN
545 This are the SGI Indy, Challenge S and Indigo2, as well as certain
546 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
547 that runs on these, say Y here.
550 bool "SGI IP27 (Origin200/2000)"
555 select SYS_HAS_EARLY_PRINTK
557 select NR_CPUS_DEFAULT_64
559 select SYS_HAS_CPU_R10000
560 select SYS_SUPPORTS_64BIT_KERNEL
561 select SYS_SUPPORTS_BIG_ENDIAN
562 select SYS_SUPPORTS_KGDB
563 select SYS_SUPPORTS_NUMA
564 select SYS_SUPPORTS_SMP
565 select GENERIC_HARDIRQS_NO__DO_IRQ
567 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
568 workstations. To compile a Linux kernel that runs on these, say Y
572 bool "SGI IP32 (O2) (EXPERIMENTAL)"
573 depends on EXPERIMENTAL
577 select DMA_NONCOHERENT
579 select R5000_CPU_SCACHE
580 select RM7000_CPU_SCACHE
581 select SYS_HAS_CPU_R5000
582 select SYS_HAS_CPU_R10000 if BROKEN
583 select SYS_HAS_CPU_RM7000
584 select SYS_HAS_CPU_NEVADA
585 select SYS_SUPPORTS_64BIT_KERNEL
586 select SYS_SUPPORTS_BIG_ENDIAN
588 If you want this kernel to run on SGI O2 workstation, say Y here.
591 bool "Sibyte BCM91480B-BigSur"
594 select NR_CPUS_DEFAULT_4
596 select SIBYTE_BCM1x80
598 select SYS_HAS_CPU_SB1
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select SYS_SUPPORTS_LITTLE_ENDIAN
603 bool "Sibyte BCM91250A-SWARM"
606 select NR_CPUS_DEFAULT_2
609 select SYS_HAS_CPU_SB1
610 select SYS_SUPPORTS_BIG_ENDIAN
611 select SYS_SUPPORTS_HIGHMEM
612 select SYS_SUPPORTS_KGDB
613 select SYS_SUPPORTS_LITTLE_ENDIAN
615 config SIBYTE_SENTOSA
616 bool "Sibyte BCM91250E-Sentosa"
617 depends on EXPERIMENTAL
620 select NR_CPUS_DEFAULT_2
623 select SYS_HAS_CPU_SB1
624 select SYS_SUPPORTS_BIG_ENDIAN
625 select SYS_SUPPORTS_LITTLE_ENDIAN
628 bool "Sibyte BCM91125E-Rhone"
629 depends on EXPERIMENTAL
632 select SIBYTE_BCM1125H
634 select SYS_HAS_CPU_SB1
635 select SYS_SUPPORTS_BIG_ENDIAN
636 select SYS_SUPPORTS_LITTLE_ENDIAN
639 bool "Sibyte BCM91120x-Carmel"
640 depends on EXPERIMENTAL
643 select SIBYTE_BCM1120
645 select SYS_HAS_CPU_SB1
646 select SYS_SUPPORTS_BIG_ENDIAN
647 select SYS_SUPPORTS_LITTLE_ENDIAN
649 config SIBYTE_PTSWARM
650 bool "Sibyte BCM91250PT-PTSWARM"
651 depends on EXPERIMENTAL
654 select NR_CPUS_DEFAULT_2
657 select SYS_HAS_CPU_SB1
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_HIGHMEM
660 select SYS_SUPPORTS_LITTLE_ENDIAN
662 config SIBYTE_LITTLESUR
663 bool "Sibyte BCM91250C2-LittleSur"
664 depends on EXPERIMENTAL
667 select NR_CPUS_DEFAULT_2
670 select SYS_HAS_CPU_SB1
671 select SYS_SUPPORTS_BIG_ENDIAN
672 select SYS_SUPPORTS_HIGHMEM
673 select SYS_SUPPORTS_LITTLE_ENDIAN
676 bool "Sibyte BCM91120C-CRhine"
677 depends on EXPERIMENTAL
680 select SIBYTE_BCM1120
682 select SYS_HAS_CPU_SB1
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_LITTLE_ENDIAN
687 bool "Sibyte BCM91125C-CRhone"
688 depends on EXPERIMENTAL
691 select SIBYTE_BCM1125
693 select SYS_HAS_CPU_SB1
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select SYS_SUPPORTS_HIGHMEM
696 select SYS_SUPPORTS_LITTLE_ENDIAN
699 bool "SNI RM200/300/400"
700 select ARC if CPU_LITTLE_ENDIAN
701 select ARC32 if CPU_LITTLE_ENDIAN
702 select ARCH_MAY_HAVE_PC_FDC
704 select DMA_NONCOHERENT
705 select GENERIC_ISA_DMA
712 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
713 select SYS_HAS_CPU_R4X00
714 select SYS_HAS_CPU_R5000
715 select SYS_HAS_CPU_R10000
716 select R5000_CPU_SCACHE
717 select SYS_HAS_EARLY_PRINTK
718 select SYS_SUPPORTS_32BIT_KERNEL
719 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
720 select SYS_SUPPORTS_BIG_ENDIAN
721 select SYS_SUPPORTS_HIGHMEM
722 select SYS_SUPPORTS_LITTLE_ENDIAN
724 The SNI RM200/300/400 are MIPS-based machines manufactured by
725 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
726 Technology and now in turn merged with Fujitsu. Say Y here to
727 support this machine type.
729 config TOSHIBA_JMR3927
730 bool "Toshiba JMR-TX3927 board"
731 select DMA_NONCOHERENT
735 select SYS_HAS_CPU_TX39XX
736 select SYS_SUPPORTS_32BIT_KERNEL
737 select SYS_SUPPORTS_LITTLE_ENDIAN
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select GENERIC_HARDIRQS_NO__DO_IRQ
741 config TOSHIBA_RBTX4927
742 bool "Toshiba TBTX49[23]7 board"
743 select DMA_NONCOHERENT
744 select HAS_TXX9_SERIAL
748 select SYS_HAS_CPU_TX49XX
749 select SYS_SUPPORTS_32BIT_KERNEL
750 select SYS_SUPPORTS_64BIT_KERNEL
751 select SYS_SUPPORTS_LITTLE_ENDIAN
752 select SYS_SUPPORTS_BIG_ENDIAN
753 select SYS_SUPPORTS_KGDB
754 select GENERIC_HARDIRQS_NO__DO_IRQ
756 This Toshiba board is based on the TX4927 processor. Say Y here to
757 support this machine type
759 config TOSHIBA_RBTX4938
760 bool "Toshiba RBTX4938 board"
761 select HAVE_STD_PC_SERIAL_PORT
762 select DMA_NONCOHERENT
763 select GENERIC_ISA_DMA
764 select HAS_TXX9_SERIAL
768 select SYS_HAS_CPU_TX49XX
769 select SYS_SUPPORTS_32BIT_KERNEL
770 select SYS_SUPPORTS_LITTLE_ENDIAN
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_KGDB
773 select GENERIC_HARDIRQS_NO__DO_IRQ
775 This Toshiba board is based on the TX4938 processor. Say Y here to
776 support this machine type
780 source "arch/mips/ddb5xxx/Kconfig"
781 source "arch/mips/gt64120/ev64120/Kconfig"
782 source "arch/mips/jazz/Kconfig"
783 source "arch/mips/lasat/Kconfig"
784 source "arch/mips/pmc-sierra/Kconfig"
785 source "arch/mips/sgi-ip27/Kconfig"
786 source "arch/mips/sibyte/Kconfig"
787 source "arch/mips/tx4927/Kconfig"
788 source "arch/mips/tx4938/Kconfig"
789 source "arch/mips/vr41xx/Kconfig"
790 source "arch/mips/philips/pnx8550/common/Kconfig"
794 config RWSEM_GENERIC_SPINLOCK
798 config RWSEM_XCHGADD_ALGORITHM
801 config ARCH_HAS_ILOG2_U32
805 config ARCH_HAS_ILOG2_U64
809 config GENERIC_FIND_NEXT_BIT
813 config GENERIC_HWEIGHT
817 config GENERIC_CALIBRATE_DELAY
825 config SCHED_NO_NO_OMIT_FRAME_POINTER
829 config GENERIC_HARDIRQS_NO__DO_IRQ
834 # Select some configuration options automatically based on user selections.
839 config ARCH_MAY_HAVE_PC_FDC
850 select DMA_NEED_PCI_MAP_STATE
852 config DMA_NONCOHERENT
854 select DMA_NEED_PCI_MAP_STATE
856 config DMA_NEED_PCI_MAP_STATE
860 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
861 depends on SYS_HAS_EARLY_PRINTK
864 This option enables special console drivers which allow the kernel
865 to print messages very early in the bootup process.
867 This is useful for kernel debugging when your machine crashes very
868 early before the console code is initialized. For normal operation
869 it is not recommended because it looks on some machines ugly and
870 oesn't cooperate with an X server. You should normally N here,
871 unless you want to debug such a crash.
873 config SYS_HAS_EARLY_PRINTK
876 config GENERIC_ISA_DMA
892 config MIPS_DISABLE_OBSOLETE_IDE
895 config GENERIC_ISA_DMA_SUPPORT_BROKEN
900 # Endianess selection. Sufficiently obscure so many users don't know what to
901 # answer,so we try hard to limit the available choices. Also the use of a
902 # choice statement should be more obvious to the user.
905 prompt "Endianess selection"
907 Some MIPS machines can be configured for either little or big endian
908 byte order. These modes require different kernels and a different
909 Linux distribution. In general there is one preferred byteorder for a
910 particular system but some systems are just as commonly used in the
911 one or the other endianness.
913 config CPU_BIG_ENDIAN
915 depends on SYS_SUPPORTS_BIG_ENDIAN
917 config CPU_LITTLE_ENDIAN
919 depends on SYS_SUPPORTS_LITTLE_ENDIAN
924 config SYS_SUPPORTS_APM_EMULATION
927 config SYS_SUPPORTS_BIG_ENDIAN
930 config SYS_SUPPORTS_LITTLE_ENDIAN
945 config DDB5XXX_COMMON
947 select SYS_SUPPORTS_KGDB
949 config MIPS_BOARDS_GEN
952 config PCI_GT64XXX_PCI0
957 select HAS_TXX9_SERIAL
990 select SYS_HAS_CPU_MIPS32_R1
991 select SYS_SUPPORTS_32BIT_KERNEL
992 select SYS_SUPPORTS_APM_EMULATION
993 select SYS_SUPPORTS_KGDB
1004 select DMA_NONCOHERENT
1006 select SYS_HAS_CPU_MIPS32_R1
1007 select SYS_HAS_EARLY_PRINTK
1008 select SYS_SUPPORTS_32BIT_KERNEL
1009 select GENERIC_HARDIRQS_NO__DO_IRQ
1010 select SYS_SUPPORTS_KGDB
1012 config SWAP_IO_SPACE
1020 config SERIAL_RM9000
1030 # Unfortunately not all GT64120 systems run the chip at the same clock.
1031 # As the user for the clock rate and try to minimize the available options.
1034 prompt "Galileo Chip Clock"
1035 #default SYSCLK_83 if MIPS_EV64120
1036 depends on MIPS_EV64120 || MOMENCO_OCELOT
1037 default SYSCLK_83 if MIPS_EV64120
1038 default SYSCLK_100 if MOMENCO_OCELOT
1041 bool "75" if MIPS_EV64120
1044 bool "83.3" if MIPS_EV64120
1047 bool "100" if MIPS_EV64120 || MOMENCO_OCELOT
1057 config MIPS_L1_CACHE_SHIFT
1059 default "4" if MACH_DECSTATION || SNI_RM
1060 default "7" if SGI_IP27
1063 config HAVE_STD_PC_SERIAL_PORT
1067 bool "ARC console support"
1068 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
1072 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1077 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
1086 menu "CPU selection"
1092 config CPU_MIPS32_R1
1093 bool "MIPS32 Release 1"
1094 depends on SYS_HAS_CPU_MIPS32_R1
1096 select CPU_HAS_PREFETCH
1097 select CPU_SUPPORTS_32BIT_KERNEL
1098 select CPU_SUPPORTS_HIGHMEM
1100 Choose this option to build a kernel for release 1 or later of the
1101 MIPS32 architecture. Most modern embedded systems with a 32-bit
1102 MIPS processor are based on a MIPS32 processor. If you know the
1103 specific type of processor in your system, choose those that one
1104 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1105 Release 2 of the MIPS32 architecture is available since several
1106 years so chances are you even have a MIPS32 Release 2 processor
1107 in which case you should choose CPU_MIPS32_R2 instead for better
1110 config CPU_MIPS32_R2
1111 bool "MIPS32 Release 2"
1112 depends on SYS_HAS_CPU_MIPS32_R2
1114 select CPU_HAS_PREFETCH
1115 select CPU_SUPPORTS_32BIT_KERNEL
1116 select CPU_SUPPORTS_HIGHMEM
1118 Choose this option to build a kernel for release 2 or later of the
1119 MIPS32 architecture. Most modern embedded systems with a 32-bit
1120 MIPS processor are based on a MIPS32 processor. If you know the
1121 specific type of processor in your system, choose those that one
1122 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1124 config CPU_MIPS64_R1
1125 bool "MIPS64 Release 1"
1126 depends on SYS_HAS_CPU_MIPS64_R1
1128 select CPU_HAS_PREFETCH
1129 select CPU_SUPPORTS_32BIT_KERNEL
1130 select CPU_SUPPORTS_64BIT_KERNEL
1131 select CPU_SUPPORTS_HIGHMEM
1133 Choose this option to build a kernel for release 1 or later of the
1134 MIPS64 architecture. Many modern embedded systems with a 64-bit
1135 MIPS processor are based on a MIPS64 processor. If you know the
1136 specific type of processor in your system, choose those that one
1137 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1138 Release 2 of the MIPS64 architecture is available since several
1139 years so chances are you even have a MIPS64 Release 2 processor
1140 in which case you should choose CPU_MIPS64_R2 instead for better
1143 config CPU_MIPS64_R2
1144 bool "MIPS64 Release 2"
1145 depends on SYS_HAS_CPU_MIPS64_R2
1147 select CPU_HAS_PREFETCH
1148 select CPU_SUPPORTS_32BIT_KERNEL
1149 select CPU_SUPPORTS_64BIT_KERNEL
1150 select CPU_SUPPORTS_HIGHMEM
1152 Choose this option to build a kernel for release 2 or later of the
1153 MIPS64 architecture. Many modern embedded systems with a 64-bit
1154 MIPS processor are based on a MIPS64 processor. If you know the
1155 specific type of processor in your system, choose those that one
1156 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1160 depends on SYS_HAS_CPU_R3000
1162 select CPU_SUPPORTS_32BIT_KERNEL
1163 select CPU_SUPPORTS_HIGHMEM
1165 Please make sure to pick the right CPU type. Linux/MIPS is not
1166 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1167 *not* work on R4000 machines and vice versa. However, since most
1168 of the supported machines have an R4000 (or similar) CPU, R4x00
1169 might be a safe bet. If the resulting kernel does not work,
1170 try to recompile with R3000.
1174 depends on SYS_HAS_CPU_TX39XX
1175 select CPU_SUPPORTS_32BIT_KERNEL
1179 depends on SYS_HAS_CPU_VR41XX
1180 select CPU_SUPPORTS_32BIT_KERNEL
1181 select CPU_SUPPORTS_64BIT_KERNEL
1183 The options selects support for the NEC VR4100 series of processors.
1184 Only choose this option if you have one of these processors as a
1185 kernel built with this option will not run on any other type of
1186 processor or vice versa.
1190 depends on SYS_HAS_CPU_R4300
1192 select CPU_SUPPORTS_32BIT_KERNEL
1193 select CPU_SUPPORTS_64BIT_KERNEL
1195 MIPS Technologies R4300-series processors.
1199 depends on SYS_HAS_CPU_R4X00
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1204 MIPS Technologies R4000-series processors other than 4300, including
1205 the R4000, R4400, R4600, and 4700.
1209 depends on SYS_HAS_CPU_TX49XX
1211 select CPU_HAS_PREFETCH
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1217 depends on SYS_HAS_CPU_R5000
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1222 MIPS Technologies R5000-series processors other than the Nevada.
1226 depends on SYS_HAS_CPU_R5432
1228 select CPU_SUPPORTS_32BIT_KERNEL
1229 select CPU_SUPPORTS_64BIT_KERNEL
1233 depends on EXPERIMENTAL
1235 depends on SYS_HAS_CPU_R6000
1236 select CPU_SUPPORTS_32BIT_KERNEL
1238 MIPS Technologies R6000 and R6000A series processors. Note these
1239 processors are extremely rare and the support for them is incomplete.
1243 depends on SYS_HAS_CPU_NEVADA
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_64BIT_KERNEL
1248 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1252 depends on EXPERIMENTAL
1253 depends on SYS_HAS_CPU_R8000
1255 select CPU_HAS_PREFETCH
1256 select CPU_SUPPORTS_64BIT_KERNEL
1258 MIPS Technologies R8000 processors. Note these processors are
1259 uncommon and the support for them is incomplete.
1263 depends on SYS_HAS_CPU_R10000
1265 select CPU_HAS_PREFETCH
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1268 select CPU_SUPPORTS_HIGHMEM
1270 MIPS Technologies R10000-series processors.
1274 depends on SYS_HAS_CPU_RM7000
1276 select CPU_HAS_PREFETCH
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1279 select CPU_SUPPORTS_HIGHMEM
1283 depends on SYS_HAS_CPU_RM9000
1285 select CPU_HAS_PREFETCH
1286 select CPU_SUPPORTS_32BIT_KERNEL
1287 select CPU_SUPPORTS_64BIT_KERNEL
1288 select CPU_SUPPORTS_HIGHMEM
1289 select WEAK_ORDERING
1293 depends on SYS_HAS_CPU_SB1
1295 select CPU_SUPPORTS_32BIT_KERNEL
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select CPU_SUPPORTS_HIGHMEM
1298 select WEAK_ORDERING
1302 config SYS_HAS_CPU_MIPS32_R1
1305 config SYS_HAS_CPU_MIPS32_R2
1308 config SYS_HAS_CPU_MIPS64_R1
1311 config SYS_HAS_CPU_MIPS64_R2
1314 config SYS_HAS_CPU_R3000
1317 config SYS_HAS_CPU_TX39XX
1320 config SYS_HAS_CPU_VR41XX
1323 config SYS_HAS_CPU_R4300
1326 config SYS_HAS_CPU_R4X00
1329 config SYS_HAS_CPU_TX49XX
1332 config SYS_HAS_CPU_R5000
1335 config SYS_HAS_CPU_R5432
1338 config SYS_HAS_CPU_R6000
1341 config SYS_HAS_CPU_NEVADA
1344 config SYS_HAS_CPU_R8000
1347 config SYS_HAS_CPU_R10000
1350 config SYS_HAS_CPU_RM7000
1353 config SYS_HAS_CPU_RM9000
1356 config SYS_HAS_CPU_SB1
1359 config WEAK_ORDERING
1364 # These two indicate any level of the MIPS32 and MIPS64 architecture
1368 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1372 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1375 # These two indicate the revision of the architecture, either Release 1 or Release 2
1379 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1383 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1385 config SYS_SUPPORTS_32BIT_KERNEL
1387 config SYS_SUPPORTS_64BIT_KERNEL
1389 config CPU_SUPPORTS_32BIT_KERNEL
1391 config CPU_SUPPORTS_64BIT_KERNEL
1398 prompt "Kernel code model"
1400 You should only select this option if you have a workload that
1401 actually benefits from 64-bit processing or if your machine has
1402 large memory. You will only be presented a single option in this
1403 menu if your system does not support both 32-bit and 64-bit kernels.
1406 bool "32-bit kernel"
1407 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1410 Select this option if you want to build a 32-bit kernel.
1412 bool "64-bit kernel"
1413 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1415 Select this option if you want to build a 64-bit kernel.
1420 prompt "Kernel page size"
1421 default PAGE_SIZE_4KB
1423 config PAGE_SIZE_4KB
1426 This option select the standard 4kB Linux page size. On some
1427 R3000-family processors this is the only available page size. Using
1428 4kB page size will minimize memory consumption and is therefore
1429 recommended for low memory systems.
1431 config PAGE_SIZE_8KB
1433 depends on EXPERIMENTAL && CPU_R8000
1435 Using 8kB page size will result in higher performance kernel at
1436 the price of higher memory consumption. This option is available
1437 only on the R8000 processor. Not that at the time of this writing
1438 this option is still high experimental; there are also issues with
1439 compatibility of user applications.
1441 config PAGE_SIZE_16KB
1443 depends on !CPU_R3000 && !CPU_TX39XX
1445 Using 16kB page size will result in higher performance kernel at
1446 the price of higher memory consumption. This option is available on
1447 all non-R3000 family processors. Note that you will need a suitable
1448 Linux distribution to support this.
1450 config PAGE_SIZE_64KB
1452 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1454 Using 64kB page size will result in higher performance kernel at
1455 the price of higher memory consumption. This option is available on
1456 all non-R3000 family processor. Not that at the time of this
1457 writing this option is still high experimental.
1464 config IP22_CPU_SCACHE
1469 # Support for a MIPS32 / MIPS64 style S-caches
1471 config MIPS_CPU_SCACHE
1475 config R5000_CPU_SCACHE
1479 config RM7000_CPU_SCACHE
1483 config SIBYTE_DMA_PAGEOPS
1484 bool "Use DMA to clear/copy pages"
1487 Instead of using the CPU to zero and copy pages, use a Data Mover
1488 channel. These DMA channels are otherwise unused by the standard
1489 SiByte Linux port. Seems to give a small performance benefit.
1491 config CPU_HAS_PREFETCH
1495 prompt "MIPS MT options"
1497 config MIPS_MT_DISABLED
1498 bool "Disable multithreading support."
1500 Use this option if your workload can't take advantage of
1501 MIPS hardware multithreading support. On systems that don't have
1502 the option of an MT-enabled processor this option will be the only
1503 option in this menu.
1506 bool "Use 1 TC on each available VPE for SMP"
1507 depends on SYS_SUPPORTS_MULTITHREADING
1508 select CPU_MIPSR2_IRQ_VI
1509 select CPU_MIPSR2_IRQ_EI
1510 select CPU_MIPSR2_SRS
1512 select NR_CPUS_DEFAULT_2
1514 select SYS_SUPPORTS_SMP
1516 This is a kernel model which is also known a VSMP or lately
1517 has been marketesed into SMVP.
1520 bool "SMTC: Use all TCs on all VPEs for SMP"
1521 depends on CPU_MIPS32_R2
1522 #depends on CPU_MIPS64_R2 # once there is hardware ...
1523 depends on SYS_SUPPORTS_MULTITHREADING
1524 select CPU_MIPSR2_IRQ_VI
1525 select CPU_MIPSR2_IRQ_EI
1526 select CPU_MIPSR2_SRS
1528 select NR_CPUS_DEFAULT_8
1530 select SYS_SUPPORTS_SMP
1532 This is a kernel model which is known a SMTC or lately has been
1533 marketesed into SMVP.
1535 config MIPS_VPE_LOADER
1536 bool "VPE loader support."
1537 depends on SYS_SUPPORTS_MULTITHREADING
1538 select CPU_MIPSR2_IRQ_VI
1539 select CPU_MIPSR2_IRQ_EI
1542 Includes a loader for loading an elf relocatable object
1543 onto another VPE and running it.
1550 config SYS_SUPPORTS_MULTITHREADING
1553 config MIPS_MT_FPAFF
1554 bool "Dynamic FPU affinity for FP-intensive threads"
1558 config MIPS_MT_SMTC_INSTANT_REPLAY
1559 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1560 depends on MIPS_MT_SMTC && !PREEMPT
1563 SMTC pseudo-interrupts between TCs are deferred and queued
1564 if the target TC is interrupt-inhibited (IXMT). In the first
1565 SMTC prototypes, these queued IPIs were serviced on return
1566 to user mode, or on entry into the kernel idle loop. The
1567 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1568 processing, which adds runtime overhead (hence the option to turn
1569 it off), but ensures that IPIs are handled promptly even under
1570 heavy I/O interrupt load.
1572 config MIPS_VPE_LOADER_TOM
1573 bool "Load VPE program into memory hidden from linux"
1574 depends on MIPS_VPE_LOADER
1577 The loader can use memory that is present but has been hidden from
1578 Linux using the kernel command line option "mem=xxMB". It's up to
1579 you to ensure the amount you put in the option and the space your
1580 program requires is less or equal to the amount physically present.
1582 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1583 config MIPS_VPE_APSP_API
1584 bool "Enable support for AP/SP API (RTLX)"
1585 depends on MIPS_VPE_LOADER
1588 config MIPS_APSP_KSPD
1590 depends on MIPS_VPE_APSP_API
1593 KSPD is a kernel daemon that accepts syscall requests from the SP
1594 side, actions them and returns the results. It also handles the
1595 "exit" syscall notifying other kernel modules the SP program is
1596 exiting. You probably want to say yes here.
1598 config SB1_PASS_1_WORKAROUNDS
1600 depends on CPU_SB1_PASS_1
1603 config SB1_PASS_2_WORKAROUNDS
1605 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1608 config SB1_PASS_2_1_WORKAROUNDS
1610 depends on CPU_SB1 && CPU_SB1_PASS_2
1613 config 64BIT_PHYS_ADDR
1614 bool "Support for 64-bit physical address space"
1615 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1620 config CPU_HAS_SMARTMIPS
1621 depends on SYS_SUPPORTS_SMARTMIPS
1622 bool "Support for the SmartMIPS ASE"
1624 SmartMIPS is a extension of the MIPS32 architecture aimed at
1625 increased security at both hardware and software level for
1626 smartcards. Enabling this option will allow proper use of the
1627 SmartMIPS instructions by Linux applications. However a kernel with
1628 this option will not work on a MIPS core without SmartMIPS core. If
1629 you don't know you probably don't have SmartMIPS and should say N
1636 # Vectored interrupt mode is an R2 feature
1638 config CPU_MIPSR2_IRQ_VI
1642 # Extended interrupt mode is an R2 feature
1644 config CPU_MIPSR2_IRQ_EI
1648 # Shadow registers are an R2 feature
1650 config CPU_MIPSR2_SRS
1655 depends on !CPU_R3000
1659 # Use the generic interrupt handling code in kernel/irq/:
1661 config GENERIC_HARDIRQS
1665 config GENERIC_IRQ_PROBE
1673 # - Highmem only makes sense for the 32-bit kernel.
1674 # - The current highmem code will only work properly on physically indexed
1675 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1676 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1677 # moment we protect the user and offer the highmem option only on machines
1678 # where it's known to be safe. This will not offer highmem on a few systems
1679 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1680 # indexed CPUs but we're playing safe.
1681 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1682 # know they might have memory configurations that could make use of highmem
1686 bool "High Memory Support"
1687 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1689 config CPU_SUPPORTS_HIGHMEM
1692 config SYS_SUPPORTS_HIGHMEM
1695 config SYS_SUPPORTS_SMARTMIPS
1698 config ARCH_FLATMEM_ENABLE
1702 config ARCH_DISCONTIGMEM_ENABLE
1704 default y if SGI_IP27
1706 Say Y to support efficient handling of discontiguous physical memory,
1707 for architectures which are either NUMA (Non-Uniform Memory Access)
1708 or have huge holes in the physical address space for other reasons.
1709 See <file:Documentation/vm/numa> for more.
1711 config ARCH_SPARSEMEM_ENABLE
1713 select SPARSEMEM_STATIC
1717 depends on SYS_SUPPORTS_NUMA
1719 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1720 Access). This option improves performance on systems with more
1721 than two nodes; on two node systems it is generally better to
1722 leave it disabled; on single node systems disable this option
1725 config SYS_SUPPORTS_NUMA
1731 depends on NEED_MULTIPLE_NODES
1736 bool "Multi-Processing support"
1737 depends on SYS_SUPPORTS_SMP
1740 This enables support for systems with more than one CPU. If you have
1741 a system with only one CPU, like most personal computers, say N. If
1742 you have a system with more than one CPU, say Y.
1744 If you say N here, the kernel will run on single and multiprocessor
1745 machines, but will use only one CPU of a multiprocessor machine. If
1746 you say Y here, the kernel will run on many, but not all,
1747 singleprocessor machines. On a singleprocessor machine, the kernel
1748 will run faster if you say N here.
1750 People using multiprocessor machines who say Y here should also say
1751 Y to "Enhanced Real Time Clock Support", below.
1753 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1754 available at <http://www.tldp.org/docs.html#howto>.
1756 If you don't know what to do here, say N.
1758 config SYS_SUPPORTS_SMP
1761 config NR_CPUS_DEFAULT_1
1764 config NR_CPUS_DEFAULT_2
1767 config NR_CPUS_DEFAULT_4
1770 config NR_CPUS_DEFAULT_8
1773 config NR_CPUS_DEFAULT_16
1776 config NR_CPUS_DEFAULT_32
1779 config NR_CPUS_DEFAULT_64
1783 int "Maximum number of CPUs (2-64)"
1784 range 1 64 if NR_CPUS_DEFAULT_1
1786 default "1" if NR_CPUS_DEFAULT_1
1787 default "2" if NR_CPUS_DEFAULT_2
1788 default "4" if NR_CPUS_DEFAULT_4
1789 default "8" if NR_CPUS_DEFAULT_8
1790 default "16" if NR_CPUS_DEFAULT_16
1791 default "32" if NR_CPUS_DEFAULT_32
1792 default "64" if NR_CPUS_DEFAULT_64
1794 This allows you to specify the maximum number of CPUs which this
1795 kernel will support. The maximum supported value is 32 for 32-bit
1796 kernel and 64 for 64-bit kernels; the minimum value which makes
1797 sense is 1 for Qemu (useful only for kernel debugging purposes)
1798 and 2 for all others.
1800 This is purely to save memory - each supported CPU adds
1801 approximately eight kilobytes to the kernel image. For best
1802 performance should round up your number of processors to the next
1806 # Timer Interrupt Frequency Configuration
1810 prompt "Timer frequency"
1813 Allows the configuration of the timer frequency.
1816 bool "48 HZ" if SYS_SUPPORTS_48HZ
1819 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1822 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1825 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1828 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1831 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1834 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1838 config SYS_SUPPORTS_48HZ
1841 config SYS_SUPPORTS_100HZ
1844 config SYS_SUPPORTS_128HZ
1847 config SYS_SUPPORTS_250HZ
1850 config SYS_SUPPORTS_256HZ
1853 config SYS_SUPPORTS_1000HZ
1856 config SYS_SUPPORTS_1024HZ
1859 config SYS_SUPPORTS_ARBIT_HZ
1861 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1862 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1863 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1864 !SYS_SUPPORTS_1024HZ
1869 default 100 if HZ_100
1870 default 128 if HZ_128
1871 default 250 if HZ_250
1872 default 256 if HZ_256
1873 default 1000 if HZ_1000
1874 default 1024 if HZ_1024
1876 source "kernel/Kconfig.preempt"
1878 config MIPS_INSANE_LARGE
1879 bool "Support for large 64-bit configurations"
1880 depends on CPU_R10000 && 64BIT
1882 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1883 previous 64-bit processors which only supported 40 bit / 1TB. If you
1884 need processes of more than 1TB virtual address space, say Y here.
1885 This will result in additional memory usage, so it is not
1886 recommended for normal users.
1889 bool "Kexec system call (EXPERIMENTAL)"
1890 depends on EXPERIMENTAL
1892 kexec is a system call that implements the ability to shutdown your
1893 current kernel, and to start another kernel. It is like a reboot
1894 but it is independent of the system firmware. And like a reboot
1895 you can start any kernel with it, not just Linux.
1897 The name comes from the similiarity to the exec system call.
1899 It is an ongoing process to be certain the hardware in a machine
1900 is properly shutdown, so do not be surprised if this code does not
1901 initially work for you. It may help to enable device hotplugging
1902 support. As of this writing the exact hardware interface is
1903 strongly in flux, so no good recommendation can be made.
1906 bool "Enable seccomp to safely compute untrusted bytecode"
1907 depends on PROC_FS && BROKEN
1910 This kernel feature is useful for number crunching applications
1911 that may need to compute untrusted bytecode during their
1912 execution. By using pipes or other transports made available to
1913 the process as file descriptors supporting the read/write
1914 syscalls, it's possible to isolate those applications in
1915 their own address space using seccomp. Once seccomp is
1916 enabled via /proc/<pid>/seccomp, it cannot be disabled
1917 and the task is only allowed to execute a few safe syscalls
1918 defined by each seccomp mode.
1920 If unsure, say Y. Only embedded should say N here.
1924 config RWSEM_GENERIC_SPINLOCK
1928 config LOCKDEP_SUPPORT
1932 config STACKTRACE_SUPPORT
1936 source "init/Kconfig"
1938 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1946 bool "Support for PCI controller"
1947 depends on HW_HAS_PCI
1949 Find out whether you have a PCI motherboard. PCI is the name of a
1950 bus system, i.e. the way the CPU talks to the other stuff inside
1951 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1954 The PCI-HOWTO, available from
1955 <http://www.tldp.org/docs.html#howto>, contains valuable
1956 information about which PCI hardware does work under Linux and which
1963 source "drivers/pci/Kconfig"
1966 # ISA support is now enabled via select. Too many systems still have the one
1967 # or other ISA chip on the board that users don't know about so don't expect
1968 # users to choose the right thing ...
1975 depends on HW_HAS_EISA
1977 select GENERIC_ISA_DMA
1979 The Extended Industry Standard Architecture (EISA) bus was
1980 developed as an open alternative to the IBM MicroChannel bus.
1982 The EISA bus provided some of the features of the IBM MicroChannel
1983 bus while maintaining backward compatibility with cards made for
1984 the older ISA bus. The EISA bus saw limited use between 1988 and
1985 1995 when it was made obsolete by the PCI bus.
1987 Say Y here if you are building a kernel for an EISA-based machine.
1991 source "drivers/eisa/Kconfig"
1994 bool "TURBOchannel support"
1995 depends on MACH_DECSTATION
1997 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1998 processors. Documentation on writing device drivers for TurboChannel
2000 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2003 # bool "Access.Bus support"
2013 source "drivers/pcmcia/Kconfig"
2015 source "drivers/pci/hotplug/Kconfig"
2019 menu "Executable file formats"
2021 source "fs/Kconfig.binfmt"
2027 bool "Use 64-bit ELF format for building"
2030 A 64-bit kernel is usually built using the 64-bit ELF binary object
2031 format as it's one that allows arbitrary 64-bit constructs. For
2032 kernels that are loaded within the KSEG compatibility segments the
2033 32-bit ELF format can optionally be used resulting in a somewhat
2034 smaller binary, but this option is not explicitly supported by the
2035 toolchain and since binutils 2.14 it does not even work at all.
2037 Say Y to use the 64-bit format or N to use the 32-bit one.
2042 bool "Include IRIX binary compatibility"
2043 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
2045 config MIPS32_COMPAT
2046 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2049 Select this option if you want Linux/MIPS 32-bit binary
2050 compatibility. Since all software available for Linux/MIPS is
2051 currently 32-bit you should say Y here.
2055 depends on MIPS32_COMPAT
2058 config SYSVIPC_COMPAT
2060 depends on COMPAT && SYSVIPC
2064 bool "Kernel support for o32 binaries"
2065 depends on MIPS32_COMPAT
2067 Select this option if you want to run o32 binaries. These are pure
2068 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2069 existing binaries are in this format.
2074 bool "Kernel support for n32 binaries"
2075 depends on MIPS32_COMPAT
2077 Select this option if you want to run n32 binaries. These are
2078 64-bit binaries using 32-bit quantities for addressing and certain
2079 data that would normally be 64-bit. They are used in special
2086 default y if MIPS32_O32 || MIPS32_N32
2090 menu "Power management options"
2092 source "kernel/power/Kconfig"
2096 source "net/Kconfig"
2098 source "drivers/Kconfig"
2102 source "arch/mips/oprofile/Kconfig"
2104 source "arch/mips/Kconfig.debug"
2106 source "security/Kconfig"
2108 source "crypto/Kconfig"
2110 source "lib/Kconfig"