4 # Horrible source of confusion. Die, die, die ...
8 mainmenu "Linux/MIPS Kernel Configuration"
10 menu "Machine selection"
20 bool "Alchemy processor based machines"
23 bool "Basler eXcite smart camera"
30 select SYS_HAS_CPU_RM9000
31 select SYS_SUPPORTS_32BIT_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.
49 bool "BCM47XX based boards"
50 select DMA_NONCOHERENT
53 select SYS_HAS_CPU_MIPS32_R1
54 select SYS_SUPPORTS_32BIT_KERNEL
55 select SYS_SUPPORTS_LITTLE_ENDIAN
57 select SSB_DRIVER_MIPS
59 select SYS_HAS_EARLY_PRINTK
62 Support for BCM47XX based boards
66 select DMA_NONCOHERENT
71 select PCI_GT64XXX_PCI0
72 select SYS_HAS_CPU_NEVADA
73 select SYS_HAS_EARLY_PRINTK
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
76 select SYS_SUPPORTS_LITTLE_ENDIAN
77 select GENERIC_HARDIRQS_NO__DO_IRQ
79 config MACH_DECSTATION
82 select DMA_NONCOHERENT
85 select SYS_HAS_CPU_R3000
86 select SYS_HAS_CPU_R4X00
87 select SYS_SUPPORTS_32BIT_KERNEL
88 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
89 select SYS_SUPPORTS_LITTLE_ENDIAN
90 select SYS_SUPPORTS_128HZ
91 select SYS_SUPPORTS_256HZ
92 select SYS_SUPPORTS_1024HZ
94 This enables support for DEC's MIPS based workstations. For details
95 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
96 DECstation porting pages on <http://decstation.unix-ag.org/>.
98 If you have one of the following DECstation Models you definitely
99 want to choose R4xx0 for the CPU Type:
106 otherwise choose R3000.
109 bool "Jazz family of machines"
112 select ARCH_MAY_HAVE_PC_FDC
113 select GENERIC_ISA_DMA
118 select SYS_HAS_CPU_R4X00
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
121 select SYS_SUPPORTS_100HZ
122 select GENERIC_HARDIRQS_NO__DO_IRQ
124 This a family of machines based on the MIPS R4030 chipset which was
125 used by several vendors to build RISC/os and Windows NT workstations.
126 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
127 Olivetti M700-10 workstations.
130 bool "LASAT Networks platforms"
131 select DMA_NONCOHERENT
132 select SYS_HAS_EARLY_PRINTK
134 select PCI_GT64XXX_PCI0
136 select R5000_CPU_SCACHE
137 select SYS_HAS_CPU_R5000
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
140 select SYS_SUPPORTS_LITTLE_ENDIAN
141 select GENERIC_HARDIRQS_NO__DO_IRQ
144 bool "Lemote Fulong mini-PC"
145 select ARCH_SPARSEMEM_ENABLE
146 select SYS_HAS_CPU_LOONGSON2
147 select DMA_NONCOHERENT
150 select HAVE_STD_PC_SERIAL_PORT
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_64BIT_KERNEL
157 select SYS_SUPPORTS_LITTLE_ENDIAN
158 select SYS_SUPPORTS_HIGHMEM
159 select SYS_HAS_EARLY_PRINTK
160 select GENERIC_HARDIRQS_NO__DO_IRQ
161 select GENERIC_ISA_DMA_SUPPORT_BROKEN
164 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
168 bool "MIPS Atlas board"
170 select DMA_NONCOHERENT
171 select SYS_HAS_EARLY_PRINTK
174 select MIPS_BOARDS_GEN
176 select PCI_GT64XXX_PCI0
178 select RM7000_CPU_SCACHE
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_HAS_CPU_MIPS32_R2
182 select SYS_HAS_CPU_MIPS64_R1
183 select SYS_HAS_CPU_NEVADA
184 select SYS_HAS_CPU_RM7000
185 select SYS_SUPPORTS_32BIT_KERNEL
186 select SYS_SUPPORTS_64BIT_KERNEL
187 select SYS_SUPPORTS_BIG_ENDIAN
188 select SYS_SUPPORTS_LITTLE_ENDIAN
189 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
190 select SYS_SUPPORTS_SMARTMIPS
191 select GENERIC_HARDIRQS_NO__DO_IRQ
193 This enables support for the MIPS Technologies Atlas evaluation
197 bool "MIPS Malta board"
198 select ARCH_MAY_HAVE_PC_FDC
200 select DMA_NONCOHERENT
201 select GENERIC_ISA_DMA
205 select MIPS_BOARDS_GEN
207 select MIPS_CPU_SCACHE
208 select PCI_GT64XXX_PCI0
211 select SYS_HAS_CPU_MIPS32_R1
212 select SYS_HAS_CPU_MIPS32_R2
213 select SYS_HAS_CPU_MIPS64_R1
214 select SYS_HAS_CPU_NEVADA
215 select SYS_HAS_CPU_RM7000
216 select SYS_HAS_EARLY_PRINTK
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_64BIT_KERNEL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_LITTLE_ENDIAN
221 select SYS_SUPPORTS_MULTITHREADING
222 select SYS_SUPPORTS_SMARTMIPS
224 This enables support for the MIPS Technologies Malta evaluation
228 bool "MIPS SEAD board"
230 select DMA_NONCOHERENT
231 select SYS_HAS_EARLY_PRINTK
232 select MIPS_BOARDS_GEN
233 select SYS_HAS_CPU_MIPS32_R1
234 select SYS_HAS_CPU_MIPS32_R2
235 select SYS_HAS_CPU_MIPS64_R1
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
238 select SYS_SUPPORTS_BIG_ENDIAN
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select SYS_SUPPORTS_SMARTMIPS
242 This enables support for the MIPS Technologies SEAD evaluation
246 bool 'MIPS simulator (MIPSsim)'
247 select DMA_NONCOHERENT
248 select SYS_HAS_EARLY_PRINTK
251 select SYS_HAS_CPU_MIPS32_R1
252 select SYS_HAS_CPU_MIPS32_R2
253 select SYS_HAS_EARLY_PRINTK
254 select SYS_SUPPORTS_32BIT_KERNEL
255 select SYS_SUPPORTS_BIG_ENDIAN
256 select SYS_SUPPORTS_MULTITHREADING
257 select SYS_SUPPORTS_LITTLE_ENDIAN
259 This option enables support for MIPS Technologies MIPSsim software
263 bool "NEC EMMA2RH Mark-eins"
264 select DMA_NONCOHERENT
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_SUPPORTS_LITTLE_ENDIAN
271 select SYS_HAS_CPU_R5000
273 This enables support for the R5432-based NEC Mark-eins
274 boards with R5500 CPU.
277 bool "NEC VR4100 series based machines"
278 select SYS_HAS_CPU_VR41XX
279 select GENERIC_HARDIRQS_NO__DO_IRQ
282 bool "Philips PNX8550 based JBS board"
284 select SYS_SUPPORTS_LITTLE_ENDIAN
286 config PNX8550_STB810
287 bool "Philips PNX8550 based STB810 board"
289 select SYS_SUPPORTS_LITTLE_ENDIAN
292 bool "PMC-Sierra MSP chipsets"
293 depends on EXPERIMENTAL
294 select DMA_NONCOHERENT
296 select NO_EXCEPT_FILL
298 select SYS_HAS_CPU_MIPS32_R1
299 select SYS_HAS_CPU_MIPS32_R2
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_SUPPORTS_KGDB
305 select SERIAL_8250_CONSOLE
307 This adds support for the PMC-Sierra family of Multi-Service
308 Processor System-On-A-Chips. These parts include a number
309 of integrated peripherals, interfaces and DSPs in addition to
310 a variety of MIPS cores.
313 bool "PMC-Sierra Yosemite eval board"
320 select SYS_HAS_CPU_RM9000
321 select SYS_HAS_EARLY_PRINTK
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_64BIT_KERNEL
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select SYS_SUPPORTS_HIGHMEM
326 select SYS_SUPPORTS_KGDB
327 select SYS_SUPPORTS_SMP
329 Yosemite is an evaluation board for the RM9000x2 processor
330 manufactured by PMC-Sierra.
335 select GENERIC_ISA_DMA
336 select HAVE_STD_PC_SERIAL_PORT
341 select SYS_HAS_CPU_MIPS32_R1
342 select SYS_SUPPORTS_32BIT_KERNEL
343 select SYS_SUPPORTS_BIG_ENDIAN
344 select SYS_SUPPORTS_LITTLE_ENDIAN
345 select ARCH_SPARSEMEM_ENABLE
346 select GENERIC_HARDIRQS_NO__DO_IRQ
347 select NR_CPUS_DEFAULT_1
348 select SYS_SUPPORTS_SMP
350 Qemu is a software emulator which among other architectures also
351 can simulate a MIPS32 4Kc system. This patch adds support for the
352 system architecture that currently is being simulated by Qemu. It
353 will eventually be removed again when Qemu has the capability to
354 simulate actual MIPS hardware platforms. More information on Qemu
355 can be found at http://www.linux-mips.org/wiki/Qemu.
358 bool "SGI IP22 (Indy/Indigo2)"
362 select DMA_NONCOHERENT
364 select IP22_CPU_SCACHE
366 select GENERIC_ISA_DMA_SUPPORT_BROKEN
368 select SYS_HAS_CPU_R4X00
369 select SYS_HAS_CPU_R5000
370 select SYS_HAS_EARLY_PRINTK
371 select SYS_SUPPORTS_32BIT_KERNEL
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_BIG_ENDIAN
375 This are the SGI Indy, Challenge S and Indigo2, as well as certain
376 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
377 that runs on these, say Y here.
380 bool "SGI IP27 (Origin200/2000)"
385 select SYS_HAS_EARLY_PRINTK
387 select NR_CPUS_DEFAULT_64
388 select SYS_HAS_CPU_R10000
389 select SYS_SUPPORTS_64BIT_KERNEL
390 select SYS_SUPPORTS_BIG_ENDIAN
391 select SYS_SUPPORTS_KGDB
392 select SYS_SUPPORTS_NUMA
393 select SYS_SUPPORTS_SMP
394 select GENERIC_HARDIRQS_NO__DO_IRQ
396 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
397 workstations. To compile a Linux kernel that runs on these, say Y
405 select DMA_NONCOHERENT
407 select R5000_CPU_SCACHE
408 select RM7000_CPU_SCACHE
409 select SYS_HAS_CPU_R5000
410 select SYS_HAS_CPU_R10000 if BROKEN
411 select SYS_HAS_CPU_RM7000
412 select SYS_HAS_CPU_NEVADA
413 select SYS_SUPPORTS_64BIT_KERNEL
414 select SYS_SUPPORTS_BIG_ENDIAN
416 If you want this kernel to run on SGI O2 workstation, say Y here.
419 bool "Sibyte BCM91120C-CRhine"
420 depends on EXPERIMENTAL
423 select SIBYTE_BCM1120
425 select SYS_HAS_CPU_SB1
426 select SYS_SUPPORTS_BIG_ENDIAN
427 select SYS_SUPPORTS_LITTLE_ENDIAN
430 bool "Sibyte BCM91120x-Carmel"
431 depends on EXPERIMENTAL
434 select SIBYTE_BCM1120
436 select SYS_HAS_CPU_SB1
437 select SYS_SUPPORTS_BIG_ENDIAN
438 select SYS_SUPPORTS_LITTLE_ENDIAN
441 bool "Sibyte BCM91125C-CRhone"
442 depends on EXPERIMENTAL
445 select SIBYTE_BCM1125
447 select SYS_HAS_CPU_SB1
448 select SYS_SUPPORTS_BIG_ENDIAN
449 select SYS_SUPPORTS_HIGHMEM
450 select SYS_SUPPORTS_LITTLE_ENDIAN
453 bool "Sibyte BCM91125E-Rhone"
454 depends on EXPERIMENTAL
457 select SIBYTE_BCM1125H
459 select SYS_HAS_CPU_SB1
460 select SYS_SUPPORTS_BIG_ENDIAN
461 select SYS_SUPPORTS_LITTLE_ENDIAN
464 bool "Sibyte BCM91250A-SWARM"
467 select NR_CPUS_DEFAULT_2
470 select SYS_HAS_CPU_SB1
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_HIGHMEM
473 select SYS_SUPPORTS_KGDB
474 select SYS_SUPPORTS_LITTLE_ENDIAN
476 config SIBYTE_LITTLESUR
477 bool "Sibyte BCM91250C2-LittleSur"
478 depends on EXPERIMENTAL
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_LITTLE_ENDIAN
489 config SIBYTE_SENTOSA
490 bool "Sibyte BCM91250E-Sentosa"
491 depends on EXPERIMENTAL
494 select NR_CPUS_DEFAULT_2
497 select SYS_HAS_CPU_SB1
498 select SYS_SUPPORTS_BIG_ENDIAN
499 select SYS_SUPPORTS_LITTLE_ENDIAN
501 config SIBYTE_PTSWARM
502 bool "Sibyte BCM91250PT-PTSWARM"
503 depends on EXPERIMENTAL
506 select NR_CPUS_DEFAULT_2
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_HIGHMEM
512 select SYS_SUPPORTS_LITTLE_ENDIAN
515 bool "Sibyte BCM91480B-BigSur"
518 select NR_CPUS_DEFAULT_4
519 select SIBYTE_BCM1x80
521 select SYS_HAS_CPU_SB1
522 select SYS_SUPPORTS_BIG_ENDIAN
523 select SYS_SUPPORTS_LITTLE_ENDIAN
526 bool "SNI RM200/300/400"
527 select ARC if CPU_LITTLE_ENDIAN
528 select ARC32 if CPU_LITTLE_ENDIAN
529 select ARCH_MAY_HAVE_PC_FDC
531 select DMA_NONCOHERENT
532 select GENERIC_ISA_DMA
539 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
540 select SYS_HAS_CPU_R4X00
541 select SYS_HAS_CPU_R5000
542 select SYS_HAS_CPU_R10000
543 select R5000_CPU_SCACHE
544 select SYS_HAS_EARLY_PRINTK
545 select SYS_SUPPORTS_32BIT_KERNEL
546 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
547 select SYS_SUPPORTS_BIG_ENDIAN
548 select SYS_SUPPORTS_HIGHMEM
549 select SYS_SUPPORTS_LITTLE_ENDIAN
551 The SNI RM200/300/400 are MIPS-based machines manufactured by
552 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
553 Technology and now in turn merged with Fujitsu. Say Y here to
554 support this machine type.
556 config TOSHIBA_JMR3927
557 bool "Toshiba JMR-TX3927 board"
558 select DMA_NONCOHERENT
563 select SYS_HAS_CPU_TX39XX
564 select SYS_SUPPORTS_32BIT_KERNEL
565 select SYS_SUPPORTS_LITTLE_ENDIAN
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select GENERIC_HARDIRQS_NO__DO_IRQ
569 config TOSHIBA_RBTX4927
570 bool "Toshiba RBTX49[23]7 board"
571 select DMA_NONCOHERENT
572 select HAS_TXX9_SERIAL
576 select I8259 if TOSHIBA_FPCIB0
578 select SYS_HAS_CPU_TX49XX
579 select SYS_SUPPORTS_32BIT_KERNEL
580 select SYS_SUPPORTS_64BIT_KERNEL
581 select SYS_SUPPORTS_LITTLE_ENDIAN
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_KGDB
584 select GENERIC_HARDIRQS_NO__DO_IRQ
586 This Toshiba board is based on the TX4927 processor. Say Y here to
587 support this machine type
589 config TOSHIBA_RBTX4938
590 bool "Toshiba RBTX4938 board"
591 select DMA_NONCOHERENT
592 select HAS_TXX9_SERIAL
597 select SYS_HAS_CPU_TX49XX
598 select SYS_SUPPORTS_32BIT_KERNEL
599 select SYS_SUPPORTS_LITTLE_ENDIAN
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select SYS_SUPPORTS_KGDB
602 select GENERIC_HARDIRQS_NO__DO_IRQ
605 This Toshiba board is based on the TX4938 processor. Say Y here to
606 support this machine type
609 bool "Wind River PPMC board"
612 select DMA_NONCOHERENT
614 select PCI_GT64XXX_PCI0
616 select SYS_HAS_CPU_MIPS32_R1
617 select SYS_HAS_CPU_MIPS32_R2
618 select SYS_HAS_CPU_MIPS64_R1
619 select SYS_HAS_CPU_NEVADA
620 select SYS_HAS_CPU_RM7000
621 select SYS_SUPPORTS_32BIT_KERNEL
622 select SYS_SUPPORTS_64BIT_KERNEL
623 select SYS_SUPPORTS_BIG_ENDIAN
624 select SYS_SUPPORTS_LITTLE_ENDIAN
626 This enables support for the Wind River MIPS32 4KC PPMC evaluation
627 board, which is based on GT64120 bridge chip.
631 source "arch/mips/au1000/Kconfig"
632 source "arch/mips/jazz/Kconfig"
633 source "arch/mips/lasat/Kconfig"
634 source "arch/mips/pmc-sierra/Kconfig"
635 source "arch/mips/sgi-ip27/Kconfig"
636 source "arch/mips/sibyte/Kconfig"
637 source "arch/mips/tx4927/Kconfig"
638 source "arch/mips/tx4938/Kconfig"
639 source "arch/mips/vr41xx/Kconfig"
643 config RWSEM_GENERIC_SPINLOCK
647 config RWSEM_XCHGADD_ALGORITHM
650 config ARCH_HAS_ILOG2_U32
654 config ARCH_HAS_ILOG2_U64
658 config GENERIC_FIND_NEXT_BIT
662 config GENERIC_HWEIGHT
666 config GENERIC_CALIBRATE_DELAY
674 config GENERIC_CMOS_UPDATE
678 config SCHED_NO_NO_OMIT_FRAME_POINTER
682 config GENERIC_HARDIRQS_NO__DO_IRQ
687 # Select some configuration options automatically based on user selections.
692 config ARCH_MAY_HAVE_PC_FDC
709 select DMA_NEED_PCI_MAP_STATE
711 config DMA_NONCOHERENT
713 select DMA_NEED_PCI_MAP_STATE
715 config DMA_NEED_PCI_MAP_STATE
719 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
720 depends on SYS_HAS_EARLY_PRINTK
723 This option enables special console drivers which allow the kernel
724 to print messages very early in the bootup process.
726 This is useful for kernel debugging when your machine crashes very
727 early before the console code is initialized. For normal operation,
728 it is not recommended because it looks ugly on some machines and
729 doesn't cooperate with an X server. You should normally say N here,
730 unless you want to debug such a crash.
732 config SYS_HAS_EARLY_PRINTK
751 config MIPS_DISABLE_OBSOLETE_IDE
757 config GENERIC_ISA_DMA
759 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
761 config GENERIC_ISA_DMA_SUPPORT_BROKEN
763 select GENERIC_ISA_DMA
769 # Endianess selection. Sufficiently obscure so many users don't know what to
770 # answer,so we try hard to limit the available choices. Also the use of a
771 # choice statement should be more obvious to the user.
774 prompt "Endianess selection"
776 Some MIPS machines can be configured for either little or big endian
777 byte order. These modes require different kernels and a different
778 Linux distribution. In general there is one preferred byteorder for a
779 particular system but some systems are just as commonly used in the
780 one or the other endianness.
782 config CPU_BIG_ENDIAN
784 depends on SYS_SUPPORTS_BIG_ENDIAN
786 config CPU_LITTLE_ENDIAN
788 depends on SYS_SUPPORTS_LITTLE_ENDIAN
793 config SYS_SUPPORTS_APM_EMULATION
796 config SYS_SUPPORTS_BIG_ENDIAN
799 config SYS_SUPPORTS_LITTLE_ENDIAN
823 config MIPS_BOARDS_GEN
826 config PCI_GT64XXX_PCI0
829 config NO_EXCEPT_FILL
834 select HAS_TXX9_SERIAL
846 select DMA_NONCOHERENT
848 select SYS_HAS_CPU_MIPS32_R1
849 select SYS_HAS_EARLY_PRINTK
850 select SYS_SUPPORTS_32BIT_KERNEL
851 select GENERIC_HARDIRQS_NO__DO_IRQ
852 select SYS_SUPPORTS_KGDB
872 config MIPS_L1_CACHE_SHIFT
874 default "4" if MACH_DECSTATION
875 default "7" if SGI_IP27 || SNI_RM
876 default "4" if PMC_MSP4200_EVAL
879 config HAVE_STD_PC_SERIAL_PORT
883 bool "ARC console support"
884 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
888 depends on MACH_JAZZ || SNI_RM || SGI_IP32
893 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
910 depends on SYS_HAS_CPU_LOONGSON2
911 select CPU_SUPPORTS_32BIT_KERNEL
912 select CPU_SUPPORTS_64BIT_KERNEL
913 select CPU_SUPPORTS_HIGHMEM
915 The Loongson 2E processor implements the MIPS III instruction set
916 with many extensions.
919 bool "MIPS32 Release 1"
920 depends on SYS_HAS_CPU_MIPS32_R1
922 select CPU_HAS_PREFETCH
923 select CPU_SUPPORTS_32BIT_KERNEL
924 select CPU_SUPPORTS_HIGHMEM
926 Choose this option to build a kernel for release 1 or later of the
927 MIPS32 architecture. Most modern embedded systems with a 32-bit
928 MIPS processor are based on a MIPS32 processor. If you know the
929 specific type of processor in your system, choose those that one
930 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
931 Release 2 of the MIPS32 architecture is available since several
932 years so chances are you even have a MIPS32 Release 2 processor
933 in which case you should choose CPU_MIPS32_R2 instead for better
937 bool "MIPS32 Release 2"
938 depends on SYS_HAS_CPU_MIPS32_R2
940 select CPU_HAS_PREFETCH
941 select CPU_SUPPORTS_32BIT_KERNEL
942 select CPU_SUPPORTS_HIGHMEM
944 Choose this option to build a kernel for release 2 or later of the
945 MIPS32 architecture. Most modern embedded systems with a 32-bit
946 MIPS processor are based on a MIPS32 processor. If you know the
947 specific type of processor in your system, choose those that one
948 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
951 bool "MIPS64 Release 1"
952 depends on SYS_HAS_CPU_MIPS64_R1
954 select CPU_HAS_PREFETCH
955 select CPU_SUPPORTS_32BIT_KERNEL
956 select CPU_SUPPORTS_64BIT_KERNEL
957 select CPU_SUPPORTS_HIGHMEM
959 Choose this option to build a kernel for release 1 or later of the
960 MIPS64 architecture. Many modern embedded systems with a 64-bit
961 MIPS processor are based on a MIPS64 processor. If you know the
962 specific type of processor in your system, choose those that one
963 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
964 Release 2 of the MIPS64 architecture is available since several
965 years so chances are you even have a MIPS64 Release 2 processor
966 in which case you should choose CPU_MIPS64_R2 instead for better
970 bool "MIPS64 Release 2"
971 depends on SYS_HAS_CPU_MIPS64_R2
973 select CPU_HAS_PREFETCH
974 select CPU_SUPPORTS_32BIT_KERNEL
975 select CPU_SUPPORTS_64BIT_KERNEL
976 select CPU_SUPPORTS_HIGHMEM
978 Choose this option to build a kernel for release 2 or later of the
979 MIPS64 architecture. Many modern embedded systems with a 64-bit
980 MIPS processor are based on a MIPS64 processor. If you know the
981 specific type of processor in your system, choose those that one
982 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
986 depends on SYS_HAS_CPU_R3000
988 select CPU_SUPPORTS_32BIT_KERNEL
989 select CPU_SUPPORTS_HIGHMEM
991 Please make sure to pick the right CPU type. Linux/MIPS is not
992 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
993 *not* work on R4000 machines and vice versa. However, since most
994 of the supported machines have an R4000 (or similar) CPU, R4x00
995 might be a safe bet. If the resulting kernel does not work,
996 try to recompile with R3000.
1000 depends on SYS_HAS_CPU_TX39XX
1001 select CPU_SUPPORTS_32BIT_KERNEL
1005 depends on SYS_HAS_CPU_VR41XX
1006 select CPU_SUPPORTS_32BIT_KERNEL
1007 select CPU_SUPPORTS_64BIT_KERNEL
1009 The options selects support for the NEC VR4100 series of processors.
1010 Only choose this option if you have one of these processors as a
1011 kernel built with this option will not run on any other type of
1012 processor or vice versa.
1016 depends on SYS_HAS_CPU_R4300
1018 select CPU_SUPPORTS_32BIT_KERNEL
1019 select CPU_SUPPORTS_64BIT_KERNEL
1021 MIPS Technologies R4300-series processors.
1025 depends on SYS_HAS_CPU_R4X00
1027 select CPU_SUPPORTS_32BIT_KERNEL
1028 select CPU_SUPPORTS_64BIT_KERNEL
1030 MIPS Technologies R4000-series processors other than 4300, including
1031 the R4000, R4400, R4600, and 4700.
1035 depends on SYS_HAS_CPU_TX49XX
1037 select CPU_HAS_PREFETCH
1038 select CPU_SUPPORTS_32BIT_KERNEL
1039 select CPU_SUPPORTS_64BIT_KERNEL
1043 depends on SYS_HAS_CPU_R5000
1045 select CPU_SUPPORTS_32BIT_KERNEL
1046 select CPU_SUPPORTS_64BIT_KERNEL
1048 MIPS Technologies R5000-series processors other than the Nevada.
1052 depends on SYS_HAS_CPU_R5432
1054 select CPU_SUPPORTS_32BIT_KERNEL
1055 select CPU_SUPPORTS_64BIT_KERNEL
1059 depends on EXPERIMENTAL
1061 depends on SYS_HAS_CPU_R6000
1062 select CPU_SUPPORTS_32BIT_KERNEL
1064 MIPS Technologies R6000 and R6000A series processors. Note these
1065 processors are extremely rare and the support for them is incomplete.
1069 depends on SYS_HAS_CPU_NEVADA
1071 select CPU_SUPPORTS_32BIT_KERNEL
1072 select CPU_SUPPORTS_64BIT_KERNEL
1074 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1078 depends on EXPERIMENTAL
1079 depends on SYS_HAS_CPU_R8000
1081 select CPU_HAS_PREFETCH
1082 select CPU_SUPPORTS_64BIT_KERNEL
1084 MIPS Technologies R8000 processors. Note these processors are
1085 uncommon and the support for them is incomplete.
1089 depends on SYS_HAS_CPU_R10000
1091 select CPU_HAS_PREFETCH
1092 select CPU_SUPPORTS_32BIT_KERNEL
1093 select CPU_SUPPORTS_64BIT_KERNEL
1094 select CPU_SUPPORTS_HIGHMEM
1096 MIPS Technologies R10000-series processors.
1100 depends on SYS_HAS_CPU_RM7000
1102 select CPU_HAS_PREFETCH
1103 select CPU_SUPPORTS_32BIT_KERNEL
1104 select CPU_SUPPORTS_64BIT_KERNEL
1105 select CPU_SUPPORTS_HIGHMEM
1109 depends on SYS_HAS_CPU_RM9000
1111 select CPU_HAS_PREFETCH
1112 select CPU_SUPPORTS_32BIT_KERNEL
1113 select CPU_SUPPORTS_64BIT_KERNEL
1114 select CPU_SUPPORTS_HIGHMEM
1115 select WEAK_ORDERING
1119 depends on SYS_HAS_CPU_SB1
1121 select CPU_SUPPORTS_32BIT_KERNEL
1122 select CPU_SUPPORTS_64BIT_KERNEL
1123 select CPU_SUPPORTS_HIGHMEM
1124 select WEAK_ORDERING
1128 config SYS_HAS_CPU_LOONGSON2
1131 config SYS_HAS_CPU_MIPS32_R1
1134 config SYS_HAS_CPU_MIPS32_R2
1137 config SYS_HAS_CPU_MIPS64_R1
1140 config SYS_HAS_CPU_MIPS64_R2
1143 config SYS_HAS_CPU_R3000
1146 config SYS_HAS_CPU_TX39XX
1149 config SYS_HAS_CPU_VR41XX
1152 config SYS_HAS_CPU_R4300
1155 config SYS_HAS_CPU_R4X00
1158 config SYS_HAS_CPU_TX49XX
1161 config SYS_HAS_CPU_R5000
1164 config SYS_HAS_CPU_R5432
1167 config SYS_HAS_CPU_R6000
1170 config SYS_HAS_CPU_NEVADA
1173 config SYS_HAS_CPU_R8000
1176 config SYS_HAS_CPU_R10000
1179 config SYS_HAS_CPU_RM7000
1182 config SYS_HAS_CPU_RM9000
1185 config SYS_HAS_CPU_SB1
1189 # CPU may reorder R->R, R->W, W->R, W->W
1190 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1192 config WEAK_ORDERING
1196 # CPU may reorder reads and writes beyond LL/SC
1197 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1199 config WEAK_REORDERING_BEYOND_LLSC
1204 # These two indicate any level of the MIPS32 and MIPS64 architecture
1208 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1212 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1215 # These two indicate the revision of the architecture, either Release 1 or Release 2
1219 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1223 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1225 config SYS_SUPPORTS_32BIT_KERNEL
1227 config SYS_SUPPORTS_64BIT_KERNEL
1229 config CPU_SUPPORTS_32BIT_KERNEL
1231 config CPU_SUPPORTS_64BIT_KERNEL
1238 prompt "Kernel code model"
1240 You should only select this option if you have a workload that
1241 actually benefits from 64-bit processing or if your machine has
1242 large memory. You will only be presented a single option in this
1243 menu if your system does not support both 32-bit and 64-bit kernels.
1246 bool "32-bit kernel"
1247 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1250 Select this option if you want to build a 32-bit kernel.
1252 bool "64-bit kernel"
1253 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1255 Select this option if you want to build a 64-bit kernel.
1260 prompt "Kernel page size"
1261 default PAGE_SIZE_4KB
1263 config PAGE_SIZE_4KB
1266 This option select the standard 4kB Linux page size. On some
1267 R3000-family processors this is the only available page size. Using
1268 4kB page size will minimize memory consumption and is therefore
1269 recommended for low memory systems.
1271 config PAGE_SIZE_8KB
1273 depends on EXPERIMENTAL && CPU_R8000
1275 Using 8kB page size will result in higher performance kernel at
1276 the price of higher memory consumption. This option is available
1277 only on the R8000 processor. Not that at the time of this writing
1278 this option is still high experimental; there are also issues with
1279 compatibility of user applications.
1281 config PAGE_SIZE_16KB
1283 depends on !CPU_R3000 && !CPU_TX39XX
1285 Using 16kB page size will result in higher performance kernel at
1286 the price of higher memory consumption. This option is available on
1287 all non-R3000 family processors. Note that you will need a suitable
1288 Linux distribution to support this.
1290 config PAGE_SIZE_64KB
1292 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1294 Using 64kB page size will result in higher performance kernel at
1295 the price of higher memory consumption. This option is available on
1296 all non-R3000 family processor. Not that at the time of this
1297 writing this option is still high experimental.
1304 config IP22_CPU_SCACHE
1309 # Support for a MIPS32 / MIPS64 style S-caches
1311 config MIPS_CPU_SCACHE
1315 config R5000_CPU_SCACHE
1319 config RM7000_CPU_SCACHE
1323 config SIBYTE_DMA_PAGEOPS
1324 bool "Use DMA to clear/copy pages"
1327 Instead of using the CPU to zero and copy pages, use a Data Mover
1328 channel. These DMA channels are otherwise unused by the standard
1329 SiByte Linux port. Seems to give a small performance benefit.
1331 config CPU_HAS_PREFETCH
1335 prompt "MIPS MT options"
1337 config MIPS_MT_DISABLED
1338 bool "Disable multithreading support."
1340 Use this option if your workload can't take advantage of
1341 MIPS hardware multithreading support. On systems that don't have
1342 the option of an MT-enabled processor this option will be the only
1343 option in this menu.
1346 bool "Use 1 TC on each available VPE for SMP"
1347 depends on SYS_SUPPORTS_MULTITHREADING
1348 select CPU_MIPSR2_IRQ_VI
1349 select CPU_MIPSR2_IRQ_EI
1350 select CPU_MIPSR2_SRS
1352 select NR_CPUS_DEFAULT_2
1354 select SYS_SUPPORTS_SMP
1356 This is a kernel model which is also known a VSMP or lately
1357 has been marketesed into SMVP.
1360 bool "SMTC: Use all TCs on all VPEs for SMP"
1361 depends on CPU_MIPS32_R2
1362 #depends on CPU_MIPS64_R2 # once there is hardware ...
1363 depends on SYS_SUPPORTS_MULTITHREADING
1364 select CPU_MIPSR2_IRQ_VI
1365 select CPU_MIPSR2_IRQ_EI
1366 select CPU_MIPSR2_SRS
1368 select NR_CPUS_DEFAULT_8
1370 select SYS_SUPPORTS_SMP
1372 This is a kernel model which is known a SMTC or lately has been
1373 marketesed into SMVP.
1380 config SYS_SUPPORTS_MULTITHREADING
1383 config MIPS_MT_FPAFF
1384 bool "Dynamic FPU affinity for FP-intensive threads"
1386 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1388 config MIPS_VPE_LOADER
1389 bool "VPE loader support."
1390 depends on SYS_SUPPORTS_MULTITHREADING
1391 select CPU_MIPSR2_IRQ_VI
1392 select CPU_MIPSR2_IRQ_EI
1393 select CPU_MIPSR2_SRS
1396 Includes a loader for loading an elf relocatable object
1397 onto another VPE and running it.
1399 config MIPS_MT_SMTC_INSTANT_REPLAY
1400 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1401 depends on MIPS_MT_SMTC && !PREEMPT
1404 SMTC pseudo-interrupts between TCs are deferred and queued
1405 if the target TC is interrupt-inhibited (IXMT). In the first
1406 SMTC prototypes, these queued IPIs were serviced on return
1407 to user mode, or on entry into the kernel idle loop. The
1408 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1409 processing, which adds runtime overhead (hence the option to turn
1410 it off), but ensures that IPIs are handled promptly even under
1411 heavy I/O interrupt load.
1413 config MIPS_MT_SMTC_IM_BACKSTOP
1414 bool "Use per-TC register bits as backstop for inhibited IM bits"
1415 depends on MIPS_MT_SMTC
1418 To support multiple TC microthreads acting as "CPUs" within
1419 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1420 during interrupt handling. To support legacy drivers and interrupt
1421 controller management code, SMTC has a "backstop" to track and
1422 if necessary restore the interrupt mask. This has some performance
1423 impact on interrupt service overhead. Disable it only if you know
1426 config MIPS_MT_SMTC_IRQAFF
1427 bool "Support IRQ affinity API"
1428 depends on MIPS_MT_SMTC
1431 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1432 for SMTC Linux kernel. Requires platform support, of which
1433 an example can be found in the MIPS kernel i8259 and Malta
1434 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1435 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1436 interrupt dispatch, and should be used only if you know what
1439 config MIPS_VPE_LOADER_TOM
1440 bool "Load VPE program into memory hidden from linux"
1441 depends on MIPS_VPE_LOADER
1444 The loader can use memory that is present but has been hidden from
1445 Linux using the kernel command line option "mem=xxMB". It's up to
1446 you to ensure the amount you put in the option and the space your
1447 program requires is less or equal to the amount physically present.
1449 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1450 config MIPS_VPE_APSP_API
1451 bool "Enable support for AP/SP API (RTLX)"
1452 depends on MIPS_VPE_LOADER
1455 config MIPS_APSP_KSPD
1457 depends on MIPS_VPE_APSP_API
1460 KSPD is a kernel daemon that accepts syscall requests from the SP
1461 side, actions them and returns the results. It also handles the
1462 "exit" syscall notifying other kernel modules the SP program is
1463 exiting. You probably want to say yes here.
1465 config SB1_PASS_1_WORKAROUNDS
1467 depends on CPU_SB1_PASS_1
1470 config SB1_PASS_2_WORKAROUNDS
1472 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1475 config SB1_PASS_2_1_WORKAROUNDS
1477 depends on CPU_SB1 && CPU_SB1_PASS_2
1480 config 64BIT_PHYS_ADDR
1486 config CPU_HAS_SMARTMIPS
1487 depends on SYS_SUPPORTS_SMARTMIPS
1488 bool "Support for the SmartMIPS ASE"
1490 SmartMIPS is a extension of the MIPS32 architecture aimed at
1491 increased security at both hardware and software level for
1492 smartcards. Enabling this option will allow proper use of the
1493 SmartMIPS instructions by Linux applications. However a kernel with
1494 this option will not work on a MIPS core without SmartMIPS core. If
1495 you don't know you probably don't have SmartMIPS and should say N
1501 config 64BIT_CONTEXT
1502 bool "Save 64bit integer registers"
1503 depends on 32BIT && CPU_LOONGSON2
1505 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1506 registers can still be accessed as 64bit, mainly for multimedia
1507 instructions. We must have all 64bit save/restored to make sure
1508 those instructions to get correct result.
1511 # Vectored interrupt mode is an R2 feature
1513 config CPU_MIPSR2_IRQ_VI
1517 # Extended interrupt mode is an R2 feature
1519 config CPU_MIPSR2_IRQ_EI
1523 # Shadow registers are an R2 feature
1525 config CPU_MIPSR2_SRS
1530 depends on !CPU_R3000
1534 # Use the generic interrupt handling code in kernel/irq/:
1536 config GENERIC_HARDIRQS
1540 config GENERIC_IRQ_PROBE
1548 # - Highmem only makes sense for the 32-bit kernel.
1549 # - The current highmem code will only work properly on physically indexed
1550 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1551 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1552 # moment we protect the user and offer the highmem option only on machines
1553 # where it's known to be safe. This will not offer highmem on a few systems
1554 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1555 # indexed CPUs but we're playing safe.
1556 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1557 # know they might have memory configurations that could make use of highmem
1561 bool "High Memory Support"
1562 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1564 config CPU_SUPPORTS_HIGHMEM
1567 config SYS_SUPPORTS_HIGHMEM
1570 config SYS_SUPPORTS_SMARTMIPS
1573 config ARCH_FLATMEM_ENABLE
1577 config ARCH_DISCONTIGMEM_ENABLE
1579 default y if SGI_IP27
1581 Say Y to support efficient handling of discontiguous physical memory,
1582 for architectures which are either NUMA (Non-Uniform Memory Access)
1583 or have huge holes in the physical address space for other reasons.
1584 See <file:Documentation/vm/numa> for more.
1586 config ARCH_SPARSEMEM_ENABLE
1588 select SPARSEMEM_STATIC
1592 depends on SYS_SUPPORTS_NUMA
1594 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1595 Access). This option improves performance on systems with more
1596 than two nodes; on two node systems it is generally better to
1597 leave it disabled; on single node systems disable this option
1600 config SYS_SUPPORTS_NUMA
1606 depends on NEED_MULTIPLE_NODES
1611 bool "Multi-Processing support"
1612 depends on SYS_SUPPORTS_SMP
1615 This enables support for systems with more than one CPU. If you have
1616 a system with only one CPU, like most personal computers, say N. If
1617 you have a system with more than one CPU, say Y.
1619 If you say N here, the kernel will run on single and multiprocessor
1620 machines, but will use only one CPU of a multiprocessor machine. If
1621 you say Y here, the kernel will run on many, but not all,
1622 singleprocessor machines. On a singleprocessor machine, the kernel
1623 will run faster if you say N here.
1625 People using multiprocessor machines who say Y here should also say
1626 Y to "Enhanced Real Time Clock Support", below.
1628 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1629 available at <http://www.tldp.org/docs.html#howto>.
1631 If you don't know what to do here, say N.
1633 config SYS_SUPPORTS_SMP
1636 config NR_CPUS_DEFAULT_1
1639 config NR_CPUS_DEFAULT_2
1642 config NR_CPUS_DEFAULT_4
1645 config NR_CPUS_DEFAULT_8
1648 config NR_CPUS_DEFAULT_16
1651 config NR_CPUS_DEFAULT_32
1654 config NR_CPUS_DEFAULT_64
1658 int "Maximum number of CPUs (2-64)"
1659 range 1 64 if NR_CPUS_DEFAULT_1
1661 default "1" if NR_CPUS_DEFAULT_1
1662 default "2" if NR_CPUS_DEFAULT_2
1663 default "4" if NR_CPUS_DEFAULT_4
1664 default "8" if NR_CPUS_DEFAULT_8
1665 default "16" if NR_CPUS_DEFAULT_16
1666 default "32" if NR_CPUS_DEFAULT_32
1667 default "64" if NR_CPUS_DEFAULT_64
1669 This allows you to specify the maximum number of CPUs which this
1670 kernel will support. The maximum supported value is 32 for 32-bit
1671 kernel and 64 for 64-bit kernels; the minimum value which makes
1672 sense is 1 for Qemu (useful only for kernel debugging purposes)
1673 and 2 for all others.
1675 This is purely to save memory - each supported CPU adds
1676 approximately eight kilobytes to the kernel image. For best
1677 performance should round up your number of processors to the next
1681 # Timer Interrupt Frequency Configuration
1685 prompt "Timer frequency"
1688 Allows the configuration of the timer frequency.
1691 bool "48 HZ" if SYS_SUPPORTS_48HZ
1694 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1697 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1700 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1703 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1706 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1709 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1713 config SYS_SUPPORTS_48HZ
1716 config SYS_SUPPORTS_100HZ
1719 config SYS_SUPPORTS_128HZ
1722 config SYS_SUPPORTS_250HZ
1725 config SYS_SUPPORTS_256HZ
1728 config SYS_SUPPORTS_1000HZ
1731 config SYS_SUPPORTS_1024HZ
1734 config SYS_SUPPORTS_ARBIT_HZ
1736 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1737 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1738 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1739 !SYS_SUPPORTS_1024HZ
1744 default 100 if HZ_100
1745 default 128 if HZ_128
1746 default 250 if HZ_250
1747 default 256 if HZ_256
1748 default 1000 if HZ_1000
1749 default 1024 if HZ_1024
1751 source "kernel/Kconfig.preempt"
1753 config MIPS_INSANE_LARGE
1754 bool "Support for large 64-bit configurations"
1755 depends on CPU_R10000 && 64BIT
1757 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1758 previous 64-bit processors which only supported 40 bit / 1TB. If you
1759 need processes of more than 1TB virtual address space, say Y here.
1760 This will result in additional memory usage, so it is not
1761 recommended for normal users.
1764 bool "Kexec system call (EXPERIMENTAL)"
1765 depends on EXPERIMENTAL
1767 kexec is a system call that implements the ability to shutdown your
1768 current kernel, and to start another kernel. It is like a reboot
1769 but it is independent of the system firmware. And like a reboot
1770 you can start any kernel with it, not just Linux.
1772 The name comes from the similiarity to the exec system call.
1774 It is an ongoing process to be certain the hardware in a machine
1775 is properly shutdown, so do not be surprised if this code does not
1776 initially work for you. It may help to enable device hotplugging
1777 support. As of this writing the exact hardware interface is
1778 strongly in flux, so no good recommendation can be made.
1781 bool "Enable seccomp to safely compute untrusted bytecode"
1785 This kernel feature is useful for number crunching applications
1786 that may need to compute untrusted bytecode during their
1787 execution. By using pipes or other transports made available to
1788 the process as file descriptors supporting the read/write
1789 syscalls, it's possible to isolate those applications in
1790 their own address space using seccomp. Once seccomp is
1791 enabled via /proc/<pid>/seccomp, it cannot be disabled
1792 and the task is only allowed to execute a few safe syscalls
1793 defined by each seccomp mode.
1795 If unsure, say Y. Only embedded should say N here.
1799 config RWSEM_GENERIC_SPINLOCK
1803 config LOCKDEP_SUPPORT
1807 config STACKTRACE_SUPPORT
1811 source "init/Kconfig"
1813 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1821 bool "Support for PCI controller"
1822 depends on HW_HAS_PCI
1825 Find out whether you have a PCI motherboard. PCI is the name of a
1826 bus system, i.e. the way the CPU talks to the other stuff inside
1827 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1830 The PCI-HOWTO, available from
1831 <http://www.tldp.org/docs.html#howto>, contains valuable
1832 information about which PCI hardware does work under Linux and which
1838 source "drivers/pci/Kconfig"
1841 # ISA support is now enabled via select. Too many systems still have the one
1842 # or other ISA chip on the board that users don't know about so don't expect
1843 # users to choose the right thing ...
1850 depends on HW_HAS_EISA
1852 select GENERIC_ISA_DMA
1854 The Extended Industry Standard Architecture (EISA) bus was
1855 developed as an open alternative to the IBM MicroChannel bus.
1857 The EISA bus provided some of the features of the IBM MicroChannel
1858 bus while maintaining backward compatibility with cards made for
1859 the older ISA bus. The EISA bus saw limited use between 1988 and
1860 1995 when it was made obsolete by the PCI bus.
1862 Say Y here if you are building a kernel for an EISA-based machine.
1866 source "drivers/eisa/Kconfig"
1869 bool "TURBOchannel support"
1870 depends on MACH_DECSTATION
1872 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1873 processors. Documentation on writing device drivers for TurboChannel
1875 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1878 # bool "Access.Bus support"
1888 source "drivers/pcmcia/Kconfig"
1890 source "drivers/pci/hotplug/Kconfig"
1894 menu "Executable file formats"
1896 source "fs/Kconfig.binfmt"
1902 bool "Include IRIX binary compatibility"
1903 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1905 config MIPS32_COMPAT
1906 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1909 Select this option if you want Linux/MIPS 32-bit binary
1910 compatibility. Since all software available for Linux/MIPS is
1911 currently 32-bit you should say Y here.
1915 depends on MIPS32_COMPAT
1918 config SYSVIPC_COMPAT
1920 depends on COMPAT && SYSVIPC
1924 bool "Kernel support for o32 binaries"
1925 depends on MIPS32_COMPAT
1927 Select this option if you want to run o32 binaries. These are pure
1928 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1929 existing binaries are in this format.
1934 bool "Kernel support for n32 binaries"
1935 depends on MIPS32_COMPAT
1937 Select this option if you want to run n32 binaries. These are
1938 64-bit binaries using 32-bit quantities for addressing and certain
1939 data that would normally be 64-bit. They are used in special
1946 default y if MIPS32_O32 || MIPS32_N32
1950 menu "Power management options"
1952 source "kernel/power/Kconfig"
1956 source "net/Kconfig"
1958 source "drivers/Kconfig"
1962 source "arch/mips/oprofile/Kconfig"
1964 source "arch/mips/Kconfig.debug"
1966 source "security/Kconfig"
1968 source "crypto/Kconfig"
1970 source "lib/Kconfig"