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 "LASAT Networks platforms"
113 select DMA_NONCOHERENT
114 select SYS_HAS_EARLY_PRINTK
116 select PCI_GT64XXX_PCI0
118 select R5000_CPU_SCACHE
119 select SYS_HAS_CPU_R5000
120 select SYS_SUPPORTS_32BIT_KERNEL
121 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select GENERIC_HARDIRQS_NO__DO_IRQ
126 bool "MIPS Atlas board"
128 select DMA_NONCOHERENT
129 select SYS_HAS_EARLY_PRINTK
132 select MIPS_BOARDS_GEN
134 select PCI_GT64XXX_PCI0
136 select RM7000_CPU_SCACHE
138 select SYS_HAS_CPU_MIPS32_R1
139 select SYS_HAS_CPU_MIPS32_R2
140 select SYS_HAS_CPU_MIPS64_R1
141 select SYS_HAS_CPU_NEVADA
142 select SYS_HAS_CPU_RM7000
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_64BIT_KERNEL
145 select SYS_SUPPORTS_BIG_ENDIAN
146 select SYS_SUPPORTS_LITTLE_ENDIAN
147 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
148 select SYS_SUPPORTS_SMARTMIPS
149 select GENERIC_HARDIRQS_NO__DO_IRQ
151 This enables support for the MIPS Technologies Atlas evaluation
155 bool "MIPS Malta board"
156 select ARCH_MAY_HAVE_PC_FDC
158 select DMA_NONCOHERENT
159 select GENERIC_ISA_DMA
163 select MIPS_BOARDS_GEN
165 select MIPS_CPU_SCACHE
166 select PCI_GT64XXX_PCI0
169 select SYS_HAS_CPU_MIPS32_R1
170 select SYS_HAS_CPU_MIPS32_R2
171 select SYS_HAS_CPU_MIPS64_R1
172 select SYS_HAS_CPU_NEVADA
173 select SYS_HAS_CPU_RM7000
174 select SYS_HAS_EARLY_PRINTK
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_SUPPORTS_64BIT_KERNEL
177 select SYS_SUPPORTS_BIG_ENDIAN
178 select SYS_SUPPORTS_LITTLE_ENDIAN
179 select SYS_SUPPORTS_MULTITHREADING
180 select SYS_SUPPORTS_SMARTMIPS
182 This enables support for the MIPS Technologies Malta evaluation
186 bool "MIPS SEAD board (EXPERIMENTAL)"
187 depends on EXPERIMENTAL
189 select DMA_NONCOHERENT
190 select SYS_HAS_EARLY_PRINTK
191 select MIPS_BOARDS_GEN
192 select SYS_HAS_CPU_MIPS32_R1
193 select SYS_HAS_CPU_MIPS32_R2
194 select SYS_HAS_CPU_MIPS64_R1
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
197 select SYS_SUPPORTS_BIG_ENDIAN
198 select SYS_SUPPORTS_LITTLE_ENDIAN
199 select SYS_SUPPORTS_SMARTMIPS
201 This enables support for the MIPS Technologies SEAD evaluation
205 bool "Wind River PPMC board"
208 select DMA_NONCOHERENT
210 select PCI_GT64XXX_PCI0
212 select SYS_HAS_CPU_MIPS32_R1
213 select SYS_HAS_CPU_MIPS32_R2
214 select SYS_HAS_CPU_MIPS64_R1
215 select SYS_HAS_CPU_NEVADA
216 select SYS_HAS_CPU_RM7000
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_64BIT_KERNEL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_LITTLE_ENDIAN
222 This enables support for the Wind River MIPS32 4KC PPMC evaluation
223 board, which is based on GT64120 bridge chip.
226 bool 'MIPS simulator (MIPSsim)'
227 select DMA_NONCOHERENT
228 select SYS_HAS_EARLY_PRINTK
230 select SYS_HAS_CPU_MIPS32_R1
231 select SYS_HAS_CPU_MIPS32_R2
232 select SYS_HAS_EARLY_PRINTK
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_BIG_ENDIAN
235 select SYS_SUPPORTS_MULTITHREADING
236 select SYS_SUPPORTS_LITTLE_ENDIAN
238 This option enables support for MIPS Technologies MIPSsim software
241 config MOMENCO_OCELOT
242 bool "Momentum Ocelot board"
243 select DMA_NONCOHERENT
247 select PCI_GT64XXX_PCI0
248 select RM7000_CPU_SCACHE
250 select SYS_HAS_CPU_RM7000
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_64BIT_KERNEL
253 select SYS_SUPPORTS_BIG_ENDIAN
254 select SYS_SUPPORTS_KGDB
256 The Ocelot is a MIPS-based Single Board Computer (SBC) made by
257 Momentum Computer <http://www.momenco.com/>.
259 config MOMENCO_OCELOT_3
260 bool "Momentum Ocelot-3 board"
262 select DMA_NONCOHERENT
268 select RM7000_CPU_SCACHE
270 select SYS_HAS_CPU_RM9000
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL
273 select SYS_SUPPORTS_BIG_ENDIAN
275 The Ocelot-3 is based off Discovery III System Controller and
276 PMC-Sierra Rm79000 core.
279 bool "Philips PNX8550 based JBS board"
281 select SYS_SUPPORTS_LITTLE_ENDIAN
283 config PNX8550_STB810
284 bool "Philips PNX8550 based STB810 board"
286 select SYS_SUPPORTS_LITTLE_ENDIAN
289 bool "NEC DDB Vrc-5477"
290 select DDB5XXX_COMMON
291 select DMA_NONCOHERENT
295 select SYS_HAS_CPU_R5432
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
298 select SYS_SUPPORTS_KGDB
299 select SYS_SUPPORTS_KGDB
300 select SYS_SUPPORTS_LITTLE_ENDIAN
302 This enables support for the R5432-based NEC DDB Vrc-5477,
303 or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
305 Features : kernel debugging, serial terminal, NFS root fs, on-board
306 ether port USB, AC97, PCI, etc.
309 bool "NEC VR4100 series based machines"
310 select SYS_HAS_CPU_VR41XX
311 select GENERIC_HARDIRQS_NO__DO_IRQ
314 bool "PMC-Sierra Yosemite eval board"
321 select SYS_HAS_CPU_RM9000
322 select SYS_HAS_EARLY_PRINTK
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_64BIT_KERNEL
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_HIGHMEM
327 select SYS_SUPPORTS_KGDB
328 select SYS_SUPPORTS_SMP
330 Yosemite is an evaluation board for the RM9000x2 processor
331 manufactured by PMC-Sierra.
336 select GENERIC_ISA_DMA
337 select HAVE_STD_PC_SERIAL_PORT
342 select SYS_HAS_CPU_MIPS32_R1
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_BIG_ENDIAN
345 select SYS_SUPPORTS_LITTLE_ENDIAN
346 select ARCH_SPARSEMEM_ENABLE
347 select GENERIC_HARDIRQS_NO__DO_IRQ
348 select NR_CPUS_DEFAULT_1
349 select SYS_SUPPORTS_SMP
351 Qemu is a software emulator which among other architectures also
352 can simulate a MIPS32 4Kc system. This patch adds support for the
353 system architecture that currently is being simulated by Qemu. It
354 will eventually be removed again when Qemu has the capability to
355 simulate actual MIPS hardware platforms. More information on Qemu
356 can be found at http://www.linux-mips.org/wiki/Qemu.
359 bool "NEC EMMA2RH Mark-eins"
360 select DMA_NONCOHERENT
364 select SYS_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
366 select SYS_SUPPORTS_LITTLE_ENDIAN
367 select SYS_HAS_CPU_R5000
369 This enables support for the R5432-based NEC Mark-eins
370 boards with R5500 CPU.
373 bool "SGI IP22 (Indy/Indigo2)"
377 select DMA_NONCOHERENT
379 select IP22_CPU_SCACHE
381 select GENERIC_ISA_DMA_SUPPORT_BROKEN
383 select SYS_HAS_CPU_R4X00
384 select SYS_HAS_CPU_R5000
385 select SYS_HAS_EARLY_PRINTK
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_64BIT_KERNEL
388 select SYS_SUPPORTS_BIG_ENDIAN
390 This are the SGI Indy, Challenge S and Indigo2, as well as certain
391 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
392 that runs on these, say Y here.
395 bool "SGI IP27 (Origin200/2000)"
400 select SYS_HAS_EARLY_PRINTK
402 select NR_CPUS_DEFAULT_64
404 select SYS_HAS_CPU_R10000
405 select SYS_SUPPORTS_64BIT_KERNEL
406 select SYS_SUPPORTS_BIG_ENDIAN
407 select SYS_SUPPORTS_KGDB
408 select SYS_SUPPORTS_NUMA
409 select SYS_SUPPORTS_SMP
410 select GENERIC_HARDIRQS_NO__DO_IRQ
412 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
413 workstations. To compile a Linux kernel that runs on these, say Y
421 select DMA_NONCOHERENT
423 select R5000_CPU_SCACHE
424 select RM7000_CPU_SCACHE
425 select SYS_HAS_CPU_R5000
426 select SYS_HAS_CPU_R10000 if BROKEN
427 select SYS_HAS_CPU_RM7000
428 select SYS_HAS_CPU_NEVADA
429 select SYS_SUPPORTS_64BIT_KERNEL
430 select SYS_SUPPORTS_BIG_ENDIAN
432 If you want this kernel to run on SGI O2 workstation, say Y here.
435 bool "Sibyte BCM91480B-BigSur"
438 select NR_CPUS_DEFAULT_4
440 select SIBYTE_BCM1x80
442 select SYS_HAS_CPU_SB1
443 select SYS_SUPPORTS_BIG_ENDIAN
444 select SYS_SUPPORTS_LITTLE_ENDIAN
447 bool "Sibyte BCM91250A-SWARM"
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_KGDB
457 select SYS_SUPPORTS_LITTLE_ENDIAN
459 config SIBYTE_SENTOSA
460 bool "Sibyte BCM91250E-Sentosa"
461 depends on EXPERIMENTAL
464 select NR_CPUS_DEFAULT_2
467 select SYS_HAS_CPU_SB1
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_LITTLE_ENDIAN
472 bool "Sibyte BCM91125E-Rhone"
473 depends on EXPERIMENTAL
476 select SIBYTE_BCM1125H
478 select SYS_HAS_CPU_SB1
479 select SYS_SUPPORTS_BIG_ENDIAN
480 select SYS_SUPPORTS_LITTLE_ENDIAN
483 bool "Sibyte BCM91120x-Carmel"
484 depends on EXPERIMENTAL
487 select SIBYTE_BCM1120
489 select SYS_HAS_CPU_SB1
490 select SYS_SUPPORTS_BIG_ENDIAN
491 select SYS_SUPPORTS_LITTLE_ENDIAN
493 config SIBYTE_PTSWARM
494 bool "Sibyte BCM91250PT-PTSWARM"
495 depends on EXPERIMENTAL
498 select NR_CPUS_DEFAULT_2
501 select SYS_HAS_CPU_SB1
502 select SYS_SUPPORTS_BIG_ENDIAN
503 select SYS_SUPPORTS_HIGHMEM
504 select SYS_SUPPORTS_LITTLE_ENDIAN
506 config SIBYTE_LITTLESUR
507 bool "Sibyte BCM91250C2-LittleSur"
508 depends on EXPERIMENTAL
511 select NR_CPUS_DEFAULT_2
514 select SYS_HAS_CPU_SB1
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_HIGHMEM
517 select SYS_SUPPORTS_LITTLE_ENDIAN
520 bool "Sibyte BCM91120C-CRhine"
521 depends on EXPERIMENTAL
524 select SIBYTE_BCM1120
526 select SYS_HAS_CPU_SB1
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_LITTLE_ENDIAN
531 bool "Sibyte BCM91125C-CRhone"
532 depends on EXPERIMENTAL
535 select SIBYTE_BCM1125
537 select SYS_HAS_CPU_SB1
538 select SYS_SUPPORTS_BIG_ENDIAN
539 select SYS_SUPPORTS_HIGHMEM
540 select SYS_SUPPORTS_LITTLE_ENDIAN
543 bool "SNI RM200/300/400"
544 select ARC if CPU_LITTLE_ENDIAN
545 select ARC32 if CPU_LITTLE_ENDIAN
546 select ARCH_MAY_HAVE_PC_FDC
548 select DMA_NONCOHERENT
549 select GENERIC_ISA_DMA
556 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
557 select SYS_HAS_CPU_R4X00
558 select SYS_HAS_CPU_R5000
559 select SYS_HAS_CPU_R10000
560 select R5000_CPU_SCACHE
561 select SYS_HAS_EARLY_PRINTK
562 select SYS_SUPPORTS_32BIT_KERNEL
563 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
564 select SYS_SUPPORTS_BIG_ENDIAN
565 select SYS_SUPPORTS_HIGHMEM
566 select SYS_SUPPORTS_LITTLE_ENDIAN
568 The SNI RM200/300/400 are MIPS-based machines manufactured by
569 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
570 Technology and now in turn merged with Fujitsu. Say Y here to
571 support this machine type.
573 config TOSHIBA_JMR3927
574 bool "Toshiba JMR-TX3927 board"
575 select DMA_NONCOHERENT
579 select SYS_HAS_CPU_TX39XX
580 select SYS_SUPPORTS_32BIT_KERNEL
581 select SYS_SUPPORTS_LITTLE_ENDIAN
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select GENERIC_HARDIRQS_NO__DO_IRQ
585 config TOSHIBA_RBTX4927
586 bool "Toshiba TBTX49[23]7 board"
587 select DMA_NONCOHERENT
588 select HAS_TXX9_SERIAL
592 select SYS_HAS_CPU_TX49XX
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_64BIT_KERNEL
595 select SYS_SUPPORTS_LITTLE_ENDIAN
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_KGDB
598 select GENERIC_HARDIRQS_NO__DO_IRQ
600 This Toshiba board is based on the TX4927 processor. Say Y here to
601 support this machine type
603 config TOSHIBA_RBTX4938
604 bool "Toshiba RBTX4938 board"
605 select HAVE_STD_PC_SERIAL_PORT
606 select DMA_NONCOHERENT
607 select GENERIC_ISA_DMA
608 select HAS_TXX9_SERIAL
612 select SYS_HAS_CPU_TX49XX
613 select SYS_SUPPORTS_32BIT_KERNEL
614 select SYS_SUPPORTS_LITTLE_ENDIAN
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select SYS_SUPPORTS_KGDB
617 select GENERIC_HARDIRQS_NO__DO_IRQ
619 This Toshiba board is based on the TX4938 processor. Say Y here to
620 support this machine type
624 source "arch/mips/au1000/Kconfig"
625 source "arch/mips/ddb5xxx/Kconfig"
626 source "arch/mips/jazz/Kconfig"
627 source "arch/mips/lasat/Kconfig"
628 source "arch/mips/pmc-sierra/Kconfig"
629 source "arch/mips/sgi-ip27/Kconfig"
630 source "arch/mips/sibyte/Kconfig"
631 source "arch/mips/tx4927/Kconfig"
632 source "arch/mips/tx4938/Kconfig"
633 source "arch/mips/vr41xx/Kconfig"
634 source "arch/mips/philips/pnx8550/common/Kconfig"
638 config RWSEM_GENERIC_SPINLOCK
642 config RWSEM_XCHGADD_ALGORITHM
645 config ARCH_HAS_ILOG2_U32
649 config ARCH_HAS_ILOG2_U64
653 config GENERIC_FIND_NEXT_BIT
657 config GENERIC_HWEIGHT
661 config GENERIC_CALIBRATE_DELAY
669 config SCHED_NO_NO_OMIT_FRAME_POINTER
673 config GENERIC_HARDIRQS_NO__DO_IRQ
678 # Select some configuration options automatically based on user selections.
683 config ARCH_MAY_HAVE_PC_FDC
694 select DMA_NEED_PCI_MAP_STATE
696 config DMA_NONCOHERENT
698 select DMA_NEED_PCI_MAP_STATE
700 config DMA_NEED_PCI_MAP_STATE
704 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
705 depends on SYS_HAS_EARLY_PRINTK
708 This option enables special console drivers which allow the kernel
709 to print messages very early in the bootup process.
711 This is useful for kernel debugging when your machine crashes very
712 early before the console code is initialized. For normal operation,
713 it is not recommended because it looks ugly on some machines and
714 doesn't cooperate with an X server. You should normally say N here,
715 unless you want to debug such a crash.
717 config SYS_HAS_EARLY_PRINTK
720 config GENERIC_ISA_DMA
736 config MIPS_DISABLE_OBSOLETE_IDE
742 config GENERIC_ISA_DMA_SUPPORT_BROKEN
750 # Endianess selection. Sufficiently obscure so many users don't know what to
751 # answer,so we try hard to limit the available choices. Also the use of a
752 # choice statement should be more obvious to the user.
755 prompt "Endianess selection"
757 Some MIPS machines can be configured for either little or big endian
758 byte order. These modes require different kernels and a different
759 Linux distribution. In general there is one preferred byteorder for a
760 particular system but some systems are just as commonly used in the
761 one or the other endianness.
763 config CPU_BIG_ENDIAN
765 depends on SYS_SUPPORTS_BIG_ENDIAN
767 config CPU_LITTLE_ENDIAN
769 depends on SYS_SUPPORTS_LITTLE_ENDIAN
774 config SYS_SUPPORTS_APM_EMULATION
777 config SYS_SUPPORTS_BIG_ENDIAN
780 config SYS_SUPPORTS_LITTLE_ENDIAN
795 config DDB5XXX_COMMON
797 select SYS_SUPPORTS_KGDB
799 config MIPS_BOARDS_GEN
802 config PCI_GT64XXX_PCI0
807 select HAS_TXX9_SERIAL
822 select DMA_NONCOHERENT
824 select SYS_HAS_CPU_MIPS32_R1
825 select SYS_HAS_EARLY_PRINTK
826 select SYS_SUPPORTS_32BIT_KERNEL
827 select GENERIC_HARDIRQS_NO__DO_IRQ
828 select SYS_SUPPORTS_KGDB
843 # Unfortunately not all GT64120 systems run the chip at the same clock.
844 # As the user for the clock rate and try to minimize the available options.
847 prompt "Galileo Chip Clock"
848 depends on MOMENCO_OCELOT
849 default SYSCLK_100 if MOMENCO_OCELOT
852 bool "100" if MOMENCO_OCELOT
862 config MIPS_L1_CACHE_SHIFT
864 default "4" if MACH_DECSTATION || SNI_RM
865 default "7" if SGI_IP27
868 config HAVE_STD_PC_SERIAL_PORT
872 bool "ARC console support"
873 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
877 depends on MACH_JAZZ || SNI_RM || SGI_IP32
882 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
899 depends on SYS_HAS_CPU_LOONGSON2
900 select CPU_SUPPORTS_32BIT_KERNEL
901 select CPU_SUPPORTS_64BIT_KERNEL
902 select CPU_SUPPORTS_HIGHMEM
904 The Loongson 2E processor implements the MIPS III instruction set
905 with many extensions.
908 bool "MIPS32 Release 1"
909 depends on SYS_HAS_CPU_MIPS32_R1
911 select CPU_HAS_PREFETCH
912 select CPU_SUPPORTS_32BIT_KERNEL
913 select CPU_SUPPORTS_HIGHMEM
915 Choose this option to build a kernel for release 1 or later of the
916 MIPS32 architecture. Most modern embedded systems with a 32-bit
917 MIPS processor are based on a MIPS32 processor. If you know the
918 specific type of processor in your system, choose those that one
919 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
920 Release 2 of the MIPS32 architecture is available since several
921 years so chances are you even have a MIPS32 Release 2 processor
922 in which case you should choose CPU_MIPS32_R2 instead for better
926 bool "MIPS32 Release 2"
927 depends on SYS_HAS_CPU_MIPS32_R2
929 select CPU_HAS_PREFETCH
930 select CPU_SUPPORTS_32BIT_KERNEL
931 select CPU_SUPPORTS_HIGHMEM
933 Choose this option to build a kernel for release 2 or later of the
934 MIPS32 architecture. Most modern embedded systems with a 32-bit
935 MIPS processor are based on a MIPS32 processor. If you know the
936 specific type of processor in your system, choose those that one
937 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
940 bool "MIPS64 Release 1"
941 depends on SYS_HAS_CPU_MIPS64_R1
943 select CPU_HAS_PREFETCH
944 select CPU_SUPPORTS_32BIT_KERNEL
945 select CPU_SUPPORTS_64BIT_KERNEL
946 select CPU_SUPPORTS_HIGHMEM
948 Choose this option to build a kernel for release 1 or later of the
949 MIPS64 architecture. Many modern embedded systems with a 64-bit
950 MIPS processor are based on a MIPS64 processor. If you know the
951 specific type of processor in your system, choose those that one
952 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
953 Release 2 of the MIPS64 architecture is available since several
954 years so chances are you even have a MIPS64 Release 2 processor
955 in which case you should choose CPU_MIPS64_R2 instead for better
959 bool "MIPS64 Release 2"
960 depends on SYS_HAS_CPU_MIPS64_R2
962 select CPU_HAS_PREFETCH
963 select CPU_SUPPORTS_32BIT_KERNEL
964 select CPU_SUPPORTS_64BIT_KERNEL
965 select CPU_SUPPORTS_HIGHMEM
967 Choose this option to build a kernel for release 2 or later of the
968 MIPS64 architecture. Many modern embedded systems with a 64-bit
969 MIPS processor are based on a MIPS64 processor. If you know the
970 specific type of processor in your system, choose those that one
971 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
975 depends on SYS_HAS_CPU_R3000
977 select CPU_SUPPORTS_32BIT_KERNEL
978 select CPU_SUPPORTS_HIGHMEM
980 Please make sure to pick the right CPU type. Linux/MIPS is not
981 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
982 *not* work on R4000 machines and vice versa. However, since most
983 of the supported machines have an R4000 (or similar) CPU, R4x00
984 might be a safe bet. If the resulting kernel does not work,
985 try to recompile with R3000.
989 depends on SYS_HAS_CPU_TX39XX
990 select CPU_SUPPORTS_32BIT_KERNEL
994 depends on SYS_HAS_CPU_VR41XX
995 select CPU_SUPPORTS_32BIT_KERNEL
996 select CPU_SUPPORTS_64BIT_KERNEL
998 The options selects support for the NEC VR4100 series of processors.
999 Only choose this option if you have one of these processors as a
1000 kernel built with this option will not run on any other type of
1001 processor or vice versa.
1005 depends on SYS_HAS_CPU_R4300
1007 select CPU_SUPPORTS_32BIT_KERNEL
1008 select CPU_SUPPORTS_64BIT_KERNEL
1010 MIPS Technologies R4300-series processors.
1014 depends on SYS_HAS_CPU_R4X00
1016 select CPU_SUPPORTS_32BIT_KERNEL
1017 select CPU_SUPPORTS_64BIT_KERNEL
1019 MIPS Technologies R4000-series processors other than 4300, including
1020 the R4000, R4400, R4600, and 4700.
1024 depends on SYS_HAS_CPU_TX49XX
1026 select CPU_HAS_PREFETCH
1027 select CPU_SUPPORTS_32BIT_KERNEL
1028 select CPU_SUPPORTS_64BIT_KERNEL
1032 depends on SYS_HAS_CPU_R5000
1034 select CPU_SUPPORTS_32BIT_KERNEL
1035 select CPU_SUPPORTS_64BIT_KERNEL
1037 MIPS Technologies R5000-series processors other than the Nevada.
1041 depends on SYS_HAS_CPU_R5432
1043 select CPU_SUPPORTS_32BIT_KERNEL
1044 select CPU_SUPPORTS_64BIT_KERNEL
1048 depends on EXPERIMENTAL
1050 depends on SYS_HAS_CPU_R6000
1051 select CPU_SUPPORTS_32BIT_KERNEL
1053 MIPS Technologies R6000 and R6000A series processors. Note these
1054 processors are extremely rare and the support for them is incomplete.
1058 depends on SYS_HAS_CPU_NEVADA
1060 select CPU_SUPPORTS_32BIT_KERNEL
1061 select CPU_SUPPORTS_64BIT_KERNEL
1063 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1067 depends on EXPERIMENTAL
1068 depends on SYS_HAS_CPU_R8000
1070 select CPU_HAS_PREFETCH
1071 select CPU_SUPPORTS_64BIT_KERNEL
1073 MIPS Technologies R8000 processors. Note these processors are
1074 uncommon and the support for them is incomplete.
1078 depends on SYS_HAS_CPU_R10000
1080 select CPU_HAS_PREFETCH
1081 select CPU_SUPPORTS_32BIT_KERNEL
1082 select CPU_SUPPORTS_64BIT_KERNEL
1083 select CPU_SUPPORTS_HIGHMEM
1085 MIPS Technologies R10000-series processors.
1089 depends on SYS_HAS_CPU_RM7000
1091 select CPU_HAS_PREFETCH
1092 select CPU_SUPPORTS_32BIT_KERNEL
1093 select CPU_SUPPORTS_64BIT_KERNEL
1094 select CPU_SUPPORTS_HIGHMEM
1098 depends on SYS_HAS_CPU_RM9000
1100 select CPU_HAS_PREFETCH
1101 select CPU_SUPPORTS_32BIT_KERNEL
1102 select CPU_SUPPORTS_64BIT_KERNEL
1103 select CPU_SUPPORTS_HIGHMEM
1104 select WEAK_ORDERING
1108 depends on SYS_HAS_CPU_SB1
1110 select CPU_SUPPORTS_32BIT_KERNEL
1111 select CPU_SUPPORTS_64BIT_KERNEL
1112 select CPU_SUPPORTS_HIGHMEM
1113 select WEAK_ORDERING
1117 config SYS_HAS_CPU_LOONGSON2
1120 config SYS_HAS_CPU_MIPS32_R1
1123 config SYS_HAS_CPU_MIPS32_R2
1126 config SYS_HAS_CPU_MIPS64_R1
1129 config SYS_HAS_CPU_MIPS64_R2
1132 config SYS_HAS_CPU_R3000
1135 config SYS_HAS_CPU_TX39XX
1138 config SYS_HAS_CPU_VR41XX
1141 config SYS_HAS_CPU_R4300
1144 config SYS_HAS_CPU_R4X00
1147 config SYS_HAS_CPU_TX49XX
1150 config SYS_HAS_CPU_R5000
1153 config SYS_HAS_CPU_R5432
1156 config SYS_HAS_CPU_R6000
1159 config SYS_HAS_CPU_NEVADA
1162 config SYS_HAS_CPU_R8000
1165 config SYS_HAS_CPU_R10000
1168 config SYS_HAS_CPU_RM7000
1171 config SYS_HAS_CPU_RM9000
1174 config SYS_HAS_CPU_SB1
1177 config WEAK_ORDERING
1182 # These two indicate any level of the MIPS32 and MIPS64 architecture
1186 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1190 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1193 # These two indicate the revision of the architecture, either Release 1 or Release 2
1197 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1201 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1203 config SYS_SUPPORTS_32BIT_KERNEL
1205 config SYS_SUPPORTS_64BIT_KERNEL
1207 config CPU_SUPPORTS_32BIT_KERNEL
1209 config CPU_SUPPORTS_64BIT_KERNEL
1216 prompt "Kernel code model"
1218 You should only select this option if you have a workload that
1219 actually benefits from 64-bit processing or if your machine has
1220 large memory. You will only be presented a single option in this
1221 menu if your system does not support both 32-bit and 64-bit kernels.
1224 bool "32-bit kernel"
1225 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1228 Select this option if you want to build a 32-bit kernel.
1230 bool "64-bit kernel"
1231 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1233 Select this option if you want to build a 64-bit kernel.
1238 prompt "Kernel page size"
1239 default PAGE_SIZE_4KB
1241 config PAGE_SIZE_4KB
1244 This option select the standard 4kB Linux page size. On some
1245 R3000-family processors this is the only available page size. Using
1246 4kB page size will minimize memory consumption and is therefore
1247 recommended for low memory systems.
1249 config PAGE_SIZE_8KB
1251 depends on EXPERIMENTAL && CPU_R8000
1253 Using 8kB page size will result in higher performance kernel at
1254 the price of higher memory consumption. This option is available
1255 only on the R8000 processor. Not that at the time of this writing
1256 this option is still high experimental; there are also issues with
1257 compatibility of user applications.
1259 config PAGE_SIZE_16KB
1261 depends on !CPU_R3000 && !CPU_TX39XX
1263 Using 16kB page size will result in higher performance kernel at
1264 the price of higher memory consumption. This option is available on
1265 all non-R3000 family processors. Note that you will need a suitable
1266 Linux distribution to support this.
1268 config PAGE_SIZE_64KB
1270 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1272 Using 64kB page size will result in higher performance kernel at
1273 the price of higher memory consumption. This option is available on
1274 all non-R3000 family processor. Not that at the time of this
1275 writing this option is still high experimental.
1282 config IP22_CPU_SCACHE
1287 # Support for a MIPS32 / MIPS64 style S-caches
1289 config MIPS_CPU_SCACHE
1293 config R5000_CPU_SCACHE
1297 config RM7000_CPU_SCACHE
1301 config SIBYTE_DMA_PAGEOPS
1302 bool "Use DMA to clear/copy pages"
1305 Instead of using the CPU to zero and copy pages, use a Data Mover
1306 channel. These DMA channels are otherwise unused by the standard
1307 SiByte Linux port. Seems to give a small performance benefit.
1309 config CPU_HAS_PREFETCH
1313 prompt "MIPS MT options"
1315 config MIPS_MT_DISABLED
1316 bool "Disable multithreading support."
1318 Use this option if your workload can't take advantage of
1319 MIPS hardware multithreading support. On systems that don't have
1320 the option of an MT-enabled processor this option will be the only
1321 option in this menu.
1324 bool "Use 1 TC on each available VPE for SMP"
1325 depends on SYS_SUPPORTS_MULTITHREADING
1326 select CPU_MIPSR2_IRQ_VI
1327 select CPU_MIPSR2_IRQ_EI
1328 select CPU_MIPSR2_SRS
1330 select NR_CPUS_DEFAULT_2
1332 select SYS_SUPPORTS_SMP
1334 This is a kernel model which is also known a VSMP or lately
1335 has been marketesed into SMVP.
1338 bool "SMTC: Use all TCs on all VPEs for SMP"
1339 depends on CPU_MIPS32_R2
1340 #depends on CPU_MIPS64_R2 # once there is hardware ...
1341 depends on SYS_SUPPORTS_MULTITHREADING
1342 select CPU_MIPSR2_IRQ_VI
1343 select CPU_MIPSR2_IRQ_EI
1344 select CPU_MIPSR2_SRS
1346 select NR_CPUS_DEFAULT_8
1348 select SYS_SUPPORTS_SMP
1350 This is a kernel model which is known a SMTC or lately has been
1351 marketesed into SMVP.
1353 config MIPS_VPE_LOADER
1354 bool "VPE loader support."
1355 depends on SYS_SUPPORTS_MULTITHREADING
1356 select CPU_MIPSR2_IRQ_VI
1357 select CPU_MIPSR2_IRQ_EI
1358 select CPU_MIPSR2_SRS
1361 Includes a loader for loading an elf relocatable object
1362 onto another VPE and running it.
1369 config SYS_SUPPORTS_MULTITHREADING
1372 config MIPS_MT_FPAFF
1373 bool "Dynamic FPU affinity for FP-intensive threads"
1377 config MIPS_MT_SMTC_INSTANT_REPLAY
1378 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1379 depends on MIPS_MT_SMTC && !PREEMPT
1382 SMTC pseudo-interrupts between TCs are deferred and queued
1383 if the target TC is interrupt-inhibited (IXMT). In the first
1384 SMTC prototypes, these queued IPIs were serviced on return
1385 to user mode, or on entry into the kernel idle loop. The
1386 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1387 processing, which adds runtime overhead (hence the option to turn
1388 it off), but ensures that IPIs are handled promptly even under
1389 heavy I/O interrupt load.
1391 config MIPS_VPE_LOADER_TOM
1392 bool "Load VPE program into memory hidden from linux"
1393 depends on MIPS_VPE_LOADER
1396 The loader can use memory that is present but has been hidden from
1397 Linux using the kernel command line option "mem=xxMB". It's up to
1398 you to ensure the amount you put in the option and the space your
1399 program requires is less or equal to the amount physically present.
1401 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1402 config MIPS_VPE_APSP_API
1403 bool "Enable support for AP/SP API (RTLX)"
1404 depends on MIPS_VPE_LOADER
1407 config MIPS_APSP_KSPD
1409 depends on MIPS_VPE_APSP_API
1412 KSPD is a kernel daemon that accepts syscall requests from the SP
1413 side, actions them and returns the results. It also handles the
1414 "exit" syscall notifying other kernel modules the SP program is
1415 exiting. You probably want to say yes here.
1417 config SB1_PASS_1_WORKAROUNDS
1419 depends on CPU_SB1_PASS_1
1422 config SB1_PASS_2_WORKAROUNDS
1424 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1427 config SB1_PASS_2_1_WORKAROUNDS
1429 depends on CPU_SB1 && CPU_SB1_PASS_2
1432 config 64BIT_PHYS_ADDR
1433 bool "Support for 64-bit physical address space"
1434 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1439 config CPU_HAS_SMARTMIPS
1440 depends on SYS_SUPPORTS_SMARTMIPS
1441 bool "Support for the SmartMIPS ASE"
1443 SmartMIPS is a extension of the MIPS32 architecture aimed at
1444 increased security at both hardware and software level for
1445 smartcards. Enabling this option will allow proper use of the
1446 SmartMIPS instructions by Linux applications. However a kernel with
1447 this option will not work on a MIPS core without SmartMIPS core. If
1448 you don't know you probably don't have SmartMIPS and should say N
1454 config 64BIT_CONTEXT
1455 bool "Save 64bit integer registers"
1456 depends on 32BIT && CPU_LOONGSON2
1458 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1459 registers can still be accessed as 64bit, mainly for multimedia
1460 instructions. We must have all 64bit save/restored to make sure
1461 those instructions to get correct result.
1464 # Vectored interrupt mode is an R2 feature
1466 config CPU_MIPSR2_IRQ_VI
1470 # Extended interrupt mode is an R2 feature
1472 config CPU_MIPSR2_IRQ_EI
1476 # Shadow registers are an R2 feature
1478 config CPU_MIPSR2_SRS
1483 depends on !CPU_R3000
1487 # Use the generic interrupt handling code in kernel/irq/:
1489 config GENERIC_HARDIRQS
1493 config GENERIC_IRQ_PROBE
1501 # - Highmem only makes sense for the 32-bit kernel.
1502 # - The current highmem code will only work properly on physically indexed
1503 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1504 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1505 # moment we protect the user and offer the highmem option only on machines
1506 # where it's known to be safe. This will not offer highmem on a few systems
1507 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1508 # indexed CPUs but we're playing safe.
1509 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1510 # know they might have memory configurations that could make use of highmem
1514 bool "High Memory Support"
1515 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1517 config CPU_SUPPORTS_HIGHMEM
1520 config SYS_SUPPORTS_HIGHMEM
1523 config SYS_SUPPORTS_SMARTMIPS
1526 config ARCH_FLATMEM_ENABLE
1530 config ARCH_DISCONTIGMEM_ENABLE
1532 default y if SGI_IP27
1534 Say Y to support efficient handling of discontiguous physical memory,
1535 for architectures which are either NUMA (Non-Uniform Memory Access)
1536 or have huge holes in the physical address space for other reasons.
1537 See <file:Documentation/vm/numa> for more.
1539 config ARCH_SPARSEMEM_ENABLE
1541 select SPARSEMEM_STATIC
1545 depends on SYS_SUPPORTS_NUMA
1547 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1548 Access). This option improves performance on systems with more
1549 than two nodes; on two node systems it is generally better to
1550 leave it disabled; on single node systems disable this option
1553 config SYS_SUPPORTS_NUMA
1559 depends on NEED_MULTIPLE_NODES
1564 bool "Multi-Processing support"
1565 depends on SYS_SUPPORTS_SMP
1568 This enables support for systems with more than one CPU. If you have
1569 a system with only one CPU, like most personal computers, say N. If
1570 you have a system with more than one CPU, say Y.
1572 If you say N here, the kernel will run on single and multiprocessor
1573 machines, but will use only one CPU of a multiprocessor machine. If
1574 you say Y here, the kernel will run on many, but not all,
1575 singleprocessor machines. On a singleprocessor machine, the kernel
1576 will run faster if you say N here.
1578 People using multiprocessor machines who say Y here should also say
1579 Y to "Enhanced Real Time Clock Support", below.
1581 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1582 available at <http://www.tldp.org/docs.html#howto>.
1584 If you don't know what to do here, say N.
1586 config SYS_SUPPORTS_SMP
1589 config NR_CPUS_DEFAULT_1
1592 config NR_CPUS_DEFAULT_2
1595 config NR_CPUS_DEFAULT_4
1598 config NR_CPUS_DEFAULT_8
1601 config NR_CPUS_DEFAULT_16
1604 config NR_CPUS_DEFAULT_32
1607 config NR_CPUS_DEFAULT_64
1611 int "Maximum number of CPUs (2-64)"
1612 range 1 64 if NR_CPUS_DEFAULT_1
1614 default "1" if NR_CPUS_DEFAULT_1
1615 default "2" if NR_CPUS_DEFAULT_2
1616 default "4" if NR_CPUS_DEFAULT_4
1617 default "8" if NR_CPUS_DEFAULT_8
1618 default "16" if NR_CPUS_DEFAULT_16
1619 default "32" if NR_CPUS_DEFAULT_32
1620 default "64" if NR_CPUS_DEFAULT_64
1622 This allows you to specify the maximum number of CPUs which this
1623 kernel will support. The maximum supported value is 32 for 32-bit
1624 kernel and 64 for 64-bit kernels; the minimum value which makes
1625 sense is 1 for Qemu (useful only for kernel debugging purposes)
1626 and 2 for all others.
1628 This is purely to save memory - each supported CPU adds
1629 approximately eight kilobytes to the kernel image. For best
1630 performance should round up your number of processors to the next
1634 # Timer Interrupt Frequency Configuration
1638 prompt "Timer frequency"
1641 Allows the configuration of the timer frequency.
1644 bool "48 HZ" if SYS_SUPPORTS_48HZ
1647 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1650 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1653 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1656 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1659 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1662 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1666 config SYS_SUPPORTS_48HZ
1669 config SYS_SUPPORTS_100HZ
1672 config SYS_SUPPORTS_128HZ
1675 config SYS_SUPPORTS_250HZ
1678 config SYS_SUPPORTS_256HZ
1681 config SYS_SUPPORTS_1000HZ
1684 config SYS_SUPPORTS_1024HZ
1687 config SYS_SUPPORTS_ARBIT_HZ
1689 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1690 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1691 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1692 !SYS_SUPPORTS_1024HZ
1697 default 100 if HZ_100
1698 default 128 if HZ_128
1699 default 250 if HZ_250
1700 default 256 if HZ_256
1701 default 1000 if HZ_1000
1702 default 1024 if HZ_1024
1704 source "kernel/Kconfig.preempt"
1706 config MIPS_INSANE_LARGE
1707 bool "Support for large 64-bit configurations"
1708 depends on CPU_R10000 && 64BIT
1710 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1711 previous 64-bit processors which only supported 40 bit / 1TB. If you
1712 need processes of more than 1TB virtual address space, say Y here.
1713 This will result in additional memory usage, so it is not
1714 recommended for normal users.
1717 bool "Kexec system call (EXPERIMENTAL)"
1718 depends on EXPERIMENTAL
1720 kexec is a system call that implements the ability to shutdown your
1721 current kernel, and to start another kernel. It is like a reboot
1722 but it is independent of the system firmware. And like a reboot
1723 you can start any kernel with it, not just Linux.
1725 The name comes from the similiarity to the exec system call.
1727 It is an ongoing process to be certain the hardware in a machine
1728 is properly shutdown, so do not be surprised if this code does not
1729 initially work for you. It may help to enable device hotplugging
1730 support. As of this writing the exact hardware interface is
1731 strongly in flux, so no good recommendation can be made.
1734 bool "Enable seccomp to safely compute untrusted bytecode"
1735 depends on PROC_FS && BROKEN
1738 This kernel feature is useful for number crunching applications
1739 that may need to compute untrusted bytecode during their
1740 execution. By using pipes or other transports made available to
1741 the process as file descriptors supporting the read/write
1742 syscalls, it's possible to isolate those applications in
1743 their own address space using seccomp. Once seccomp is
1744 enabled via /proc/<pid>/seccomp, it cannot be disabled
1745 and the task is only allowed to execute a few safe syscalls
1746 defined by each seccomp mode.
1748 If unsure, say Y. Only embedded should say N here.
1752 config RWSEM_GENERIC_SPINLOCK
1756 config LOCKDEP_SUPPORT
1760 config STACKTRACE_SUPPORT
1764 source "init/Kconfig"
1766 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1774 bool "Support for PCI controller"
1775 depends on HW_HAS_PCI
1777 Find out whether you have a PCI motherboard. PCI is the name of a
1778 bus system, i.e. the way the CPU talks to the other stuff inside
1779 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1782 The PCI-HOWTO, available from
1783 <http://www.tldp.org/docs.html#howto>, contains valuable
1784 information about which PCI hardware does work under Linux and which
1791 source "drivers/pci/Kconfig"
1794 # ISA support is now enabled via select. Too many systems still have the one
1795 # or other ISA chip on the board that users don't know about so don't expect
1796 # users to choose the right thing ...
1803 depends on HW_HAS_EISA
1805 select GENERIC_ISA_DMA
1807 The Extended Industry Standard Architecture (EISA) bus was
1808 developed as an open alternative to the IBM MicroChannel bus.
1810 The EISA bus provided some of the features of the IBM MicroChannel
1811 bus while maintaining backward compatibility with cards made for
1812 the older ISA bus. The EISA bus saw limited use between 1988 and
1813 1995 when it was made obsolete by the PCI bus.
1815 Say Y here if you are building a kernel for an EISA-based machine.
1819 source "drivers/eisa/Kconfig"
1822 bool "TURBOchannel support"
1823 depends on MACH_DECSTATION
1825 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1826 processors. Documentation on writing device drivers for TurboChannel
1828 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1831 # bool "Access.Bus support"
1841 source "drivers/pcmcia/Kconfig"
1843 source "drivers/pci/hotplug/Kconfig"
1847 menu "Executable file formats"
1849 source "fs/Kconfig.binfmt"
1855 bool "Use 64-bit ELF format for building"
1858 A 64-bit kernel is usually built using the 64-bit ELF binary object
1859 format as it's one that allows arbitrary 64-bit constructs. For
1860 kernels that are loaded within the KSEG compatibility segments the
1861 32-bit ELF format can optionally be used resulting in a somewhat
1862 smaller binary, but this option is not explicitly supported by the
1863 toolchain and since binutils 2.14 it does not even work at all.
1865 Say Y to use the 64-bit format or N to use the 32-bit one.
1870 bool "Include IRIX binary compatibility"
1871 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1873 config MIPS32_COMPAT
1874 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1877 Select this option if you want Linux/MIPS 32-bit binary
1878 compatibility. Since all software available for Linux/MIPS is
1879 currently 32-bit you should say Y here.
1883 depends on MIPS32_COMPAT
1886 config SYSVIPC_COMPAT
1888 depends on COMPAT && SYSVIPC
1892 bool "Kernel support for o32 binaries"
1893 depends on MIPS32_COMPAT
1895 Select this option if you want to run o32 binaries. These are pure
1896 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1897 existing binaries are in this format.
1902 bool "Kernel support for n32 binaries"
1903 depends on MIPS32_COMPAT
1905 Select this option if you want to run n32 binaries. These are
1906 64-bit binaries using 32-bit quantities for addressing and certain
1907 data that would normally be 64-bit. They are used in special
1914 default y if MIPS32_O32 || MIPS32_N32
1918 menu "Power management options"
1920 source "kernel/power/Kconfig"
1924 source "net/Kconfig"
1926 source "drivers/Kconfig"
1930 source "arch/mips/oprofile/Kconfig"
1932 source "arch/mips/Kconfig.debug"
1934 source "security/Kconfig"
1936 source "crypto/Kconfig"
1938 source "lib/Kconfig"