7 # Horrible source of confusion. Die, die, die ...
11 mainmenu "Linux/MIPS Kernel Configuration"
13 menu "Machine selection"
23 bool "Alchemy processor based machines"
26 bool "Basler eXcite smart camera"
35 select SYS_HAS_CPU_RM9000
36 select SYS_SUPPORTS_32BIT_KERNEL
37 select SYS_SUPPORTS_BIG_ENDIAN
39 The eXcite is a smart camera platform manufactured by
40 Basler Vision Technologies AG.
43 bool "BCM47XX based boards"
46 select DMA_NONCOHERENT
49 select SYS_HAS_CPU_MIPS32_R1
50 select SYS_SUPPORTS_32BIT_KERNEL
51 select SYS_SUPPORTS_LITTLE_ENDIAN
53 select SSB_DRIVER_MIPS
54 select SSB_DRIVER_EXTIF
56 select SSB_PCICORE_HOSTMODE if PCI
58 select SYS_HAS_EARLY_PRINTK
61 Support for BCM47XX based boards
68 select DMA_NONCOHERENT
74 select PCI_GT64XXX_PCI0
76 select SYS_HAS_CPU_NEVADA
77 select SYS_HAS_EARLY_PRINTK
78 select SYS_SUPPORTS_32BIT_KERNEL
79 select SYS_SUPPORTS_64BIT_KERNEL
80 select SYS_SUPPORTS_LITTLE_ENDIAN
82 config MACH_DECSTATION
89 select CPU_DADDI_WORKAROUNDS if 64BIT
90 select CPU_R4000_WORKAROUNDS if 64BIT
91 select CPU_R4400_WORKAROUNDS if 64BIT
92 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_R3000
96 select SYS_HAS_CPU_R4X00
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
99 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_SUPPORTS_128HZ
101 select SYS_SUPPORTS_256HZ
102 select SYS_SUPPORTS_1024HZ
104 This enables support for DEC's MIPS based workstations. For details
105 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
106 DECstation porting pages on <http://decstation.unix-ag.org/>.
108 If you have one of the following DECstation Models you definitely
109 want to choose R4xx0 for the CPU Type:
116 otherwise choose R3000.
119 bool "Jazz family of machines"
122 select ARCH_MAY_HAVE_PC_FDC
125 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
126 select GENERIC_ISA_DMA
131 select SYS_HAS_CPU_R4X00
132 select SYS_SUPPORTS_32BIT_KERNEL
133 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
134 select SYS_SUPPORTS_100HZ
136 This a family of machines based on the MIPS R4030 chipset which was
137 used by several vendors to build RISC/os and Windows NT workstations.
138 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
139 Olivetti M700-10 workstations.
142 bool "LASAT Networks platforms"
145 select DMA_NONCOHERENT
146 select SYS_HAS_EARLY_PRINTK
149 select PCI_GT64XXX_PCI0
151 select R5000_CPU_SCACHE
152 select SYS_HAS_CPU_R5000
153 select SYS_SUPPORTS_32BIT_KERNEL
154 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
155 select SYS_SUPPORTS_LITTLE_ENDIAN
158 bool "Lemote Fulong mini-PC"
159 select ARCH_SPARSEMEM_ENABLE
162 select SYS_HAS_CPU_LOONGSON2
163 select DMA_NONCOHERENT
166 select HAVE_STD_PC_SERIAL_PORT
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_64BIT_KERNEL
173 select SYS_SUPPORTS_LITTLE_ENDIAN
174 select SYS_SUPPORTS_HIGHMEM
175 select SYS_HAS_EARLY_PRINTK
176 select GENERIC_ISA_DMA_SUPPORT_BROKEN
179 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
183 bool "MIPS Malta board"
184 select ARCH_MAY_HAVE_PC_FDC
189 select DMA_NONCOHERENT
190 select GENERIC_ISA_DMA
196 select MIPS_BOARDS_GEN
198 select MIPS_CPU_SCACHE
199 select PCI_GT64XXX_PCI0
202 select SYS_HAS_CPU_MIPS32_R1
203 select SYS_HAS_CPU_MIPS32_R2
204 select SYS_HAS_CPU_MIPS64_R1
205 select SYS_HAS_CPU_NEVADA
206 select SYS_HAS_CPU_RM7000
207 select SYS_HAS_EARLY_PRINTK
208 select SYS_SUPPORTS_32BIT_KERNEL
209 select SYS_SUPPORTS_64BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_SUPPORTS_LITTLE_ENDIAN
212 select SYS_SUPPORTS_MIPS_CMP if BROKEN # because SYNC_R4K is broken
213 select SYS_SUPPORTS_MULTITHREADING
214 select SYS_SUPPORTS_SMARTMIPS
216 This enables support for the MIPS Technologies Malta evaluation
220 bool 'MIPS simulator (MIPSsim)'
223 select DMA_NONCOHERENT
224 select SYS_HAS_EARLY_PRINTK
227 select SYS_HAS_CPU_MIPS32_R1
228 select SYS_HAS_CPU_MIPS32_R2
229 select SYS_HAS_EARLY_PRINTK
230 select SYS_SUPPORTS_32BIT_KERNEL
231 select SYS_SUPPORTS_BIG_ENDIAN
232 select SYS_SUPPORTS_MULTITHREADING
233 select SYS_SUPPORTS_LITTLE_ENDIAN
235 This option enables support for MIPS Technologies MIPSsim software
239 bool "NEC EMMA2RH Mark-eins board"
243 This enables support for the NEC Electronics Mark-eins boards.
246 bool "NEC VR4100 series based machines"
249 select SYS_HAS_CPU_VR41XX
252 bool "NXP STB220 board"
255 Support for NXP Semiconductors STB220 Development Board.
262 Support for NXP Semiconductors STB225 Development Board.
265 bool "NXP PNX8550 based JBS board"
267 select SYS_SUPPORTS_LITTLE_ENDIAN
269 config PNX8550_STB810
270 bool "NXP PNX8550 based STB810 board"
272 select SYS_SUPPORTS_LITTLE_ENDIAN
275 bool "PMC-Sierra MSP chipsets"
276 depends on EXPERIMENTAL
277 select DMA_NONCOHERENT
279 select NO_EXCEPT_FILL
281 select SYS_HAS_CPU_MIPS32_R1
282 select SYS_HAS_CPU_MIPS32_R2
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_BIG_ENDIAN
287 select SERIAL_8250_CONSOLE
289 This adds support for the PMC-Sierra family of Multi-Service
290 Processor System-On-A-Chips. These parts include a number
291 of integrated peripherals, interfaces and DSPs in addition to
292 a variety of MIPS cores.
295 bool "PMC-Sierra Yosemite eval board"
304 select SYS_HAS_CPU_RM9000
305 select SYS_HAS_EARLY_PRINTK
306 select SYS_SUPPORTS_32BIT_KERNEL
307 select SYS_SUPPORTS_64BIT_KERNEL
308 select SYS_SUPPORTS_BIG_ENDIAN
309 select SYS_SUPPORTS_HIGHMEM
310 select SYS_SUPPORTS_SMP
312 Yosemite is an evaluation board for the RM9000x2 processor
313 manufactured by PMC-Sierra.
316 bool "SGI IP22 (Indy/Indigo2)"
322 select DEFAULT_SGI_PARTITION
323 select DMA_NONCOHERENT
327 select IP22_CPU_SCACHE
329 select GENERIC_ISA_DMA_SUPPORT_BROKEN
331 select SGI_HAS_INDYDOG
337 select SYS_HAS_CPU_R4X00
338 select SYS_HAS_CPU_R5000
339 select SYS_HAS_EARLY_PRINTK
340 select SYS_SUPPORTS_32BIT_KERNEL
341 select SYS_SUPPORTS_64BIT_KERNEL
342 select SYS_SUPPORTS_BIG_ENDIAN
344 This are the SGI Indy, Challenge S and Indigo2, as well as certain
345 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
346 that runs on these, say Y here.
349 bool "SGI IP27 (Origin200/2000)"
353 select DEFAULT_SGI_PARTITION
355 select SYS_HAS_EARLY_PRINTK
357 select NR_CPUS_DEFAULT_64
358 select SYS_HAS_CPU_R10000
359 select SYS_SUPPORTS_64BIT_KERNEL
360 select SYS_SUPPORTS_BIG_ENDIAN
361 select SYS_SUPPORTS_NUMA
362 select SYS_SUPPORTS_SMP
364 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
365 workstations. To compile a Linux kernel that runs on these, say Y
369 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
370 depends on EXPERIMENTAL
376 select DEFAULT_SGI_PARTITION
377 select DMA_NONCOHERENT
378 select GENERIC_ISA_DMA_SUPPORT_BROKEN
384 select SGI_HAS_INDYDOG
390 select SYS_HAS_CPU_R10000
391 select SYS_HAS_EARLY_PRINTK
392 select SYS_SUPPORTS_64BIT_KERNEL
393 select SYS_SUPPORTS_BIG_ENDIAN
395 This is the SGI Indigo2 with R10000 processor. To compile a Linux
396 kernel that runs on these, say Y here.
405 select DMA_NONCOHERENT
408 select R5000_CPU_SCACHE
409 select RM7000_CPU_SCACHE
410 select SYS_HAS_CPU_R5000
411 select SYS_HAS_CPU_R10000 if BROKEN
412 select SYS_HAS_CPU_RM7000
413 select SYS_HAS_CPU_NEVADA
414 select SYS_SUPPORTS_64BIT_KERNEL
415 select SYS_SUPPORTS_BIG_ENDIAN
417 If you want this kernel to run on SGI O2 workstation, say Y here.
420 bool "Sibyte BCM91120C-CRhine"
421 depends on EXPERIMENTAL
424 select SIBYTE_BCM1120
426 select SYS_HAS_CPU_SB1
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_LITTLE_ENDIAN
431 bool "Sibyte BCM91120x-Carmel"
432 depends on EXPERIMENTAL
435 select SIBYTE_BCM1120
437 select SYS_HAS_CPU_SB1
438 select SYS_SUPPORTS_BIG_ENDIAN
439 select SYS_SUPPORTS_LITTLE_ENDIAN
442 bool "Sibyte BCM91125C-CRhone"
443 depends on EXPERIMENTAL
446 select SIBYTE_BCM1125
448 select SYS_HAS_CPU_SB1
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_HIGHMEM
451 select SYS_SUPPORTS_LITTLE_ENDIAN
454 bool "Sibyte BCM91125E-Rhone"
455 depends on EXPERIMENTAL
458 select SIBYTE_BCM1125H
460 select SYS_HAS_CPU_SB1
461 select SYS_SUPPORTS_BIG_ENDIAN
462 select SYS_SUPPORTS_LITTLE_ENDIAN
465 bool "Sibyte BCM91250A-SWARM"
468 select NR_CPUS_DEFAULT_2
471 select SYS_HAS_CPU_SB1
472 select SYS_SUPPORTS_BIG_ENDIAN
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_LITTLE_ENDIAN
475 select ZONE_DMA32 if 64BIT
477 config SIBYTE_LITTLESUR
478 bool "Sibyte BCM91250C2-LittleSur"
479 depends on EXPERIMENTAL
482 select NR_CPUS_DEFAULT_2
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_HIGHMEM
488 select SYS_SUPPORTS_LITTLE_ENDIAN
490 config SIBYTE_SENTOSA
491 bool "Sibyte BCM91250E-Sentosa"
492 depends on EXPERIMENTAL
495 select NR_CPUS_DEFAULT_2
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
503 bool "Sibyte BCM91480B-BigSur"
506 select NR_CPUS_DEFAULT_4
507 select SIBYTE_BCM1x80
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_HIGHMEM
512 select SYS_SUPPORTS_LITTLE_ENDIAN
513 select ZONE_DMA32 if 64BIT
516 bool "SNI RM200/300/400"
517 select ARC if CPU_LITTLE_ENDIAN
518 select ARC32 if CPU_LITTLE_ENDIAN
519 select SNIPROM if CPU_BIG_ENDIAN
520 select ARCH_MAY_HAVE_PC_FDC
524 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
525 select DMA_NONCOHERENT
526 select GENERIC_ISA_DMA
533 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
534 select SYS_HAS_CPU_R4X00
535 select SYS_HAS_CPU_R5000
536 select SYS_HAS_CPU_R10000
537 select R5000_CPU_SCACHE
538 select SYS_HAS_EARLY_PRINTK
539 select SYS_SUPPORTS_32BIT_KERNEL
540 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select SYS_SUPPORTS_HIGHMEM
543 select SYS_SUPPORTS_LITTLE_ENDIAN
545 The SNI RM200/300/400 are MIPS-based machines manufactured by
546 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
547 Technology and now in turn merged with Fujitsu. Say Y here to
548 support this machine type.
551 bool "Toshiba TX39 series based machines"
554 bool "Toshiba TX49 series based machines"
556 config MIKROTIK_RB532
557 bool "Mikrotik RB532 boards"
560 select DMA_NONCOHERENT
563 select SYS_HAS_CPU_MIPS32_R1
564 select SYS_SUPPORTS_32BIT_KERNEL
565 select SYS_SUPPORTS_LITTLE_ENDIAN
568 select ARCH_REQUIRE_GPIOLIB
570 Support the Mikrotik(tm) RouterBoard 532 series,
571 based on the IDT RC32434 SoC.
574 bool "Wind River PPMC board"
579 select DMA_NONCOHERENT
581 select PCI_GT64XXX_PCI0
583 select SYS_HAS_CPU_MIPS32_R1
584 select SYS_HAS_CPU_MIPS32_R2
585 select SYS_HAS_CPU_MIPS64_R1
586 select SYS_HAS_CPU_NEVADA
587 select SYS_HAS_CPU_RM7000
588 select SYS_SUPPORTS_32BIT_KERNEL
589 select SYS_SUPPORTS_64BIT_KERNEL
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_LITTLE_ENDIAN
593 This enables support for the Wind River MIPS32 4KC PPMC evaluation
594 board, which is based on GT64120 bridge chip.
596 config CAVIUM_OCTEON_SIMULATOR
597 bool "Cavium Networks Octeon Simulator"
599 select 64BIT_PHYS_ADDR
601 select SYS_SUPPORTS_64BIT_KERNEL
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_HIGHMEM
604 select SYS_SUPPORTS_HOTPLUG_CPU
605 select SYS_HAS_CPU_CAVIUM_OCTEON
607 The Octeon simulator is software performance model of the Cavium
608 Octeon Processor. It supports simulating Octeon processors on x86
611 config CAVIUM_OCTEON_REFERENCE_BOARD
612 bool "Cavium Networks Octeon reference board"
614 select 64BIT_PHYS_ADDR
616 select SYS_SUPPORTS_64BIT_KERNEL
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_HIGHMEM
619 select SYS_SUPPORTS_HOTPLUG_CPU
620 select SYS_HAS_EARLY_PRINTK
621 select SYS_HAS_CPU_CAVIUM_OCTEON
624 select ARCH_SUPPORTS_MSI
626 This option supports all of the Octeon reference boards from Cavium
627 Networks. It builds a kernel that dynamically determines the Octeon
628 CPU type and supports all known board reference implementations.
629 Some of the supported boards are:
636 Say Y here for most Octeon reference boards.
640 source "arch/mips/alchemy/Kconfig"
641 source "arch/mips/basler/excite/Kconfig"
642 source "arch/mips/jazz/Kconfig"
643 source "arch/mips/lasat/Kconfig"
644 source "arch/mips/pmc-sierra/Kconfig"
645 source "arch/mips/sgi-ip27/Kconfig"
646 source "arch/mips/sibyte/Kconfig"
647 source "arch/mips/txx9/Kconfig"
648 source "arch/mips/vr41xx/Kconfig"
649 source "arch/mips/cavium-octeon/Kconfig"
653 config RWSEM_GENERIC_SPINLOCK
657 config RWSEM_XCHGADD_ALGORITHM
660 config ARCH_HAS_ILOG2_U32
664 config ARCH_HAS_ILOG2_U64
668 config ARCH_SUPPORTS_OPROFILE
670 default y if !MIPS_MT_SMTC
672 config GENERIC_FIND_NEXT_BIT
676 config GENERIC_HWEIGHT
680 config GENERIC_CALIBRATE_DELAY
684 config GENERIC_CLOCKEVENTS
692 config GENERIC_CMOS_UPDATE
696 config SCHED_OMIT_FRAME_POINTER
700 config GENERIC_HARDIRQS_NO__DO_IRQ
704 # Select some configuration options automatically based on user selections.
709 config ARCH_MAY_HAVE_PC_FDC
755 select ARCH_REQUIRE_GPIOLIB
764 config DMA_NONCOHERENT
766 select DMA_NEED_PCI_MAP_STATE
768 config DMA_NEED_PCI_MAP_STATE
772 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
773 depends on SYS_HAS_EARLY_PRINTK
776 This option enables special console drivers which allow the kernel
777 to print messages very early in the bootup process.
779 This is useful for kernel debugging when your machine crashes very
780 early before the console code is initialized. For normal operation,
781 it is not recommended because it looks ugly on some machines and
782 doesn't cooperate with an X server. You should normally say N here,
783 unless you want to debug such a crash.
785 config SYS_HAS_EARLY_PRINTK
789 bool "Support for hot-pluggable CPUs"
790 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
792 Say Y here to allow turning CPUs off and on. CPUs can be
793 controlled through /sys/devices/system/cpu.
794 (Note: power management support will enable this option
795 automatically on SMP systems. )
796 Say N if you want to disable CPU hotplug.
798 config SYS_SUPPORTS_HOTPLUG_CPU
813 config MIPS_DISABLE_OBSOLETE_IDE
822 config GENERIC_ISA_DMA
824 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
826 config GENERIC_ISA_DMA_SUPPORT_BROKEN
828 select GENERIC_ISA_DMA
834 # Endianess selection. Sufficiently obscure so many users don't know what to
835 # answer,so we try hard to limit the available choices. Also the use of a
836 # choice statement should be more obvious to the user.
839 prompt "Endianess selection"
841 Some MIPS machines can be configured for either little or big endian
842 byte order. These modes require different kernels and a different
843 Linux distribution. In general there is one preferred byteorder for a
844 particular system but some systems are just as commonly used in the
845 one or the other endianness.
847 config CPU_BIG_ENDIAN
849 depends on SYS_SUPPORTS_BIG_ENDIAN
851 config CPU_LITTLE_ENDIAN
853 depends on SYS_SUPPORTS_LITTLE_ENDIAN
858 config SYS_SUPPORTS_APM_EMULATION
861 config SYS_SUPPORTS_BIG_ENDIAN
864 config SYS_SUPPORTS_LITTLE_ENDIAN
867 config SYS_SUPPORTS_HUGETLBFS
869 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
896 config IRQ_CPU_OCTEON
899 config MIPS_BOARDS_GEN
902 config PCI_GT64XXX_PCI0
905 config NO_EXCEPT_FILL
916 select DMA_NONCOHERENT
919 select SYS_HAS_CPU_R5500
920 select SYS_SUPPORTS_32BIT_KERNEL
921 select SYS_SUPPORTS_64BIT_KERNEL
922 select SYS_SUPPORTS_BIG_ENDIAN
929 select DMA_NONCOHERENT
930 select SYS_HAS_CPU_MIPS32_R2
931 select SYS_SUPPORTS_32BIT_KERNEL
932 select SYS_SUPPORTS_LITTLE_ENDIAN
933 select SYS_SUPPORTS_BIG_ENDIAN
935 select CPU_MIPSR2_IRQ_VI
947 select DMA_NONCOHERENT
949 select SYS_HAS_CPU_MIPS32_R1
950 select SYS_HAS_EARLY_PRINTK
951 select SYS_SUPPORTS_32BIT_KERNEL
960 config SGI_HAS_INDYDOG
978 config DEFAULT_SGI_PARTITION
990 config MIPS_L1_CACHE_SHIFT
992 default "4" if MACH_DECSTATION || MIKROTIK_RB532
993 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
994 default "4" if PMC_MSP4200_EVAL
997 config HAVE_STD_PC_SERIAL_PORT
1001 bool "ARC console support"
1002 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1006 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1011 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1020 menu "CPU selection"
1026 config CPU_LOONGSON2
1028 depends on SYS_HAS_CPU_LOONGSON2
1029 select CPU_SUPPORTS_32BIT_KERNEL
1030 select CPU_SUPPORTS_64BIT_KERNEL
1031 select CPU_SUPPORTS_HIGHMEM
1033 The Loongson 2E processor implements the MIPS III instruction set
1034 with many extensions.
1036 config CPU_MIPS32_R1
1037 bool "MIPS32 Release 1"
1038 depends on SYS_HAS_CPU_MIPS32_R1
1040 select CPU_HAS_PREFETCH
1041 select CPU_SUPPORTS_32BIT_KERNEL
1042 select CPU_SUPPORTS_HIGHMEM
1044 Choose this option to build a kernel for release 1 or later of the
1045 MIPS32 architecture. Most modern embedded systems with a 32-bit
1046 MIPS processor are based on a MIPS32 processor. If you know the
1047 specific type of processor in your system, choose those that one
1048 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1049 Release 2 of the MIPS32 architecture is available since several
1050 years so chances are you even have a MIPS32 Release 2 processor
1051 in which case you should choose CPU_MIPS32_R2 instead for better
1054 config CPU_MIPS32_R2
1055 bool "MIPS32 Release 2"
1056 depends on SYS_HAS_CPU_MIPS32_R2
1058 select CPU_HAS_PREFETCH
1059 select CPU_SUPPORTS_32BIT_KERNEL
1060 select CPU_SUPPORTS_HIGHMEM
1062 Choose this option to build a kernel for release 2 or later of the
1063 MIPS32 architecture. Most modern embedded systems with a 32-bit
1064 MIPS processor are based on a MIPS32 processor. If you know the
1065 specific type of processor in your system, choose those that one
1066 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1068 config CPU_MIPS64_R1
1069 bool "MIPS64 Release 1"
1070 depends on SYS_HAS_CPU_MIPS64_R1
1072 select CPU_HAS_PREFETCH
1073 select CPU_SUPPORTS_32BIT_KERNEL
1074 select CPU_SUPPORTS_64BIT_KERNEL
1075 select CPU_SUPPORTS_HIGHMEM
1076 select CPU_SUPPORTS_HUGEPAGES
1078 Choose this option to build a kernel for release 1 or later of the
1079 MIPS64 architecture. Many modern embedded systems with a 64-bit
1080 MIPS processor are based on a MIPS64 processor. If you know the
1081 specific type of processor in your system, choose those that one
1082 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1083 Release 2 of the MIPS64 architecture is available since several
1084 years so chances are you even have a MIPS64 Release 2 processor
1085 in which case you should choose CPU_MIPS64_R2 instead for better
1088 config CPU_MIPS64_R2
1089 bool "MIPS64 Release 2"
1090 depends on SYS_HAS_CPU_MIPS64_R2
1092 select CPU_HAS_PREFETCH
1093 select CPU_SUPPORTS_32BIT_KERNEL
1094 select CPU_SUPPORTS_64BIT_KERNEL
1095 select CPU_SUPPORTS_HIGHMEM
1096 select CPU_SUPPORTS_HUGEPAGES
1098 Choose this option to build a kernel for release 2 or later of the
1099 MIPS64 architecture. Many modern embedded systems with a 64-bit
1100 MIPS processor are based on a MIPS64 processor. If you know the
1101 specific type of processor in your system, choose those that one
1102 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1106 depends on SYS_HAS_CPU_R3000
1108 select CPU_SUPPORTS_32BIT_KERNEL
1109 select CPU_SUPPORTS_HIGHMEM
1111 Please make sure to pick the right CPU type. Linux/MIPS is not
1112 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1113 *not* work on R4000 machines and vice versa. However, since most
1114 of the supported machines have an R4000 (or similar) CPU, R4x00
1115 might be a safe bet. If the resulting kernel does not work,
1116 try to recompile with R3000.
1120 depends on SYS_HAS_CPU_TX39XX
1121 select CPU_SUPPORTS_32BIT_KERNEL
1125 depends on SYS_HAS_CPU_VR41XX
1126 select CPU_SUPPORTS_32BIT_KERNEL
1127 select CPU_SUPPORTS_64BIT_KERNEL
1129 The options selects support for the NEC VR4100 series of processors.
1130 Only choose this option if you have one of these processors as a
1131 kernel built with this option will not run on any other type of
1132 processor or vice versa.
1136 depends on SYS_HAS_CPU_R4300
1138 select CPU_SUPPORTS_32BIT_KERNEL
1139 select CPU_SUPPORTS_64BIT_KERNEL
1141 MIPS Technologies R4300-series processors.
1145 depends on SYS_HAS_CPU_R4X00
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1150 MIPS Technologies R4000-series processors other than 4300, including
1151 the R4000, R4400, R4600, and 4700.
1155 depends on SYS_HAS_CPU_TX49XX
1157 select CPU_HAS_PREFETCH
1158 select CPU_SUPPORTS_32BIT_KERNEL
1159 select CPU_SUPPORTS_64BIT_KERNEL
1163 depends on SYS_HAS_CPU_R5000
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_64BIT_KERNEL
1168 MIPS Technologies R5000-series processors other than the Nevada.
1172 depends on SYS_HAS_CPU_R5432
1174 select CPU_SUPPORTS_32BIT_KERNEL
1175 select CPU_SUPPORTS_64BIT_KERNEL
1179 depends on SYS_HAS_CPU_R5500
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1183 select CPU_SUPPORTS_HUGEPAGES
1185 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1190 depends on EXPERIMENTAL
1192 depends on SYS_HAS_CPU_R6000
1193 select CPU_SUPPORTS_32BIT_KERNEL
1195 MIPS Technologies R6000 and R6000A series processors. Note these
1196 processors are extremely rare and the support for them is incomplete.
1200 depends on SYS_HAS_CPU_NEVADA
1202 select CPU_SUPPORTS_32BIT_KERNEL
1203 select CPU_SUPPORTS_64BIT_KERNEL
1205 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1209 depends on EXPERIMENTAL
1210 depends on SYS_HAS_CPU_R8000
1212 select CPU_HAS_PREFETCH
1213 select CPU_SUPPORTS_64BIT_KERNEL
1215 MIPS Technologies R8000 processors. Note these processors are
1216 uncommon and the support for them is incomplete.
1220 depends on SYS_HAS_CPU_R10000
1222 select CPU_HAS_PREFETCH
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_64BIT_KERNEL
1225 select CPU_SUPPORTS_HIGHMEM
1227 MIPS Technologies R10000-series processors.
1231 depends on SYS_HAS_CPU_RM7000
1233 select CPU_HAS_PREFETCH
1234 select CPU_SUPPORTS_32BIT_KERNEL
1235 select CPU_SUPPORTS_64BIT_KERNEL
1236 select CPU_SUPPORTS_HIGHMEM
1240 depends on SYS_HAS_CPU_RM9000
1242 select CPU_HAS_PREFETCH
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_64BIT_KERNEL
1245 select CPU_SUPPORTS_HIGHMEM
1246 select WEAK_ORDERING
1250 depends on SYS_HAS_CPU_SB1
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1254 select CPU_SUPPORTS_HIGHMEM
1255 select WEAK_ORDERING
1257 config CPU_CAVIUM_OCTEON
1258 bool "Cavium Octeon processor"
1259 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1261 select IRQ_CPU_OCTEON
1262 select CPU_HAS_PREFETCH
1263 select CPU_SUPPORTS_64BIT_KERNEL
1264 select SYS_SUPPORTS_SMP
1265 select NR_CPUS_DEFAULT_16
1266 select WEAK_ORDERING
1267 select WEAK_REORDERING_BEYOND_LLSC
1268 select CPU_SUPPORTS_HIGHMEM
1269 select CPU_SUPPORTS_HUGEPAGES
1271 The Cavium Octeon processor is a highly integrated chip containing
1272 many ethernet hardware widgets for networking tasks. The processor
1273 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1274 Full details can be found at http://www.caviumnetworks.com.
1278 config SYS_HAS_CPU_LOONGSON2
1281 config SYS_HAS_CPU_MIPS32_R1
1284 config SYS_HAS_CPU_MIPS32_R2
1287 config SYS_HAS_CPU_MIPS64_R1
1290 config SYS_HAS_CPU_MIPS64_R2
1293 config SYS_HAS_CPU_R3000
1296 config SYS_HAS_CPU_TX39XX
1299 config SYS_HAS_CPU_VR41XX
1302 config SYS_HAS_CPU_R4300
1305 config SYS_HAS_CPU_R4X00
1308 config SYS_HAS_CPU_TX49XX
1311 config SYS_HAS_CPU_R5000
1314 config SYS_HAS_CPU_R5432
1317 config SYS_HAS_CPU_R5500
1320 config SYS_HAS_CPU_R6000
1323 config SYS_HAS_CPU_NEVADA
1326 config SYS_HAS_CPU_R8000
1329 config SYS_HAS_CPU_R10000
1332 config SYS_HAS_CPU_RM7000
1335 config SYS_HAS_CPU_RM9000
1338 config SYS_HAS_CPU_SB1
1341 config SYS_HAS_CPU_CAVIUM_OCTEON
1345 # CPU may reorder R->R, R->W, W->R, W->W
1346 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1348 config WEAK_ORDERING
1352 # CPU may reorder reads and writes beyond LL/SC
1353 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1355 config WEAK_REORDERING_BEYOND_LLSC
1360 # These two indicate any level of the MIPS32 and MIPS64 architecture
1364 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1368 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1371 # These two indicate the revision of the architecture, either Release 1 or Release 2
1375 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1379 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1381 config SYS_SUPPORTS_32BIT_KERNEL
1383 config SYS_SUPPORTS_64BIT_KERNEL
1385 config CPU_SUPPORTS_32BIT_KERNEL
1387 config CPU_SUPPORTS_64BIT_KERNEL
1389 config CPU_SUPPORTS_HUGEPAGES
1393 # Set to y for ptrace access to watch registers.
1395 config HARDWARE_WATCHPOINTS
1397 default y if CPU_MIPSR1 || CPU_MIPSR2
1403 prompt "Kernel code model"
1405 You should only select this option if you have a workload that
1406 actually benefits from 64-bit processing or if your machine has
1407 large memory. You will only be presented a single option in this
1408 menu if your system does not support both 32-bit and 64-bit kernels.
1411 bool "32-bit kernel"
1412 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1415 Select this option if you want to build a 32-bit kernel.
1417 bool "64-bit kernel"
1418 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1419 select HAVE_SYSCALL_WRAPPERS
1421 Select this option if you want to build a 64-bit kernel.
1426 prompt "Kernel page size"
1427 default PAGE_SIZE_4KB
1429 config PAGE_SIZE_4KB
1432 This option select the standard 4kB Linux page size. On some
1433 R3000-family processors this is the only available page size. Using
1434 4kB page size will minimize memory consumption and is therefore
1435 recommended for low memory systems.
1437 config PAGE_SIZE_8KB
1439 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1441 Using 8kB page size will result in higher performance kernel at
1442 the price of higher memory consumption. This option is available
1443 only on R8000 and cnMIPS processors. Note that you will need a
1444 suitable Linux distribution to support this.
1446 config PAGE_SIZE_16KB
1448 depends on !CPU_R3000 && !CPU_TX39XX
1450 Using 16kB page size will result in higher performance kernel at
1451 the price of higher memory consumption. This option is available on
1452 all non-R3000 family processors. Note that you will need a suitable
1453 Linux distribution to support this.
1455 config PAGE_SIZE_32KB
1457 depends on CPU_CAVIUM_OCTEON
1459 Using 32kB page size will result in higher performance kernel at
1460 the price of higher memory consumption. This option is available
1461 only on cnMIPS cores. Note that you will need a suitable Linux
1462 distribution to support this.
1464 config PAGE_SIZE_64KB
1466 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1468 Using 64kB page size will result in higher performance kernel at
1469 the price of higher memory consumption. This option is available on
1470 all non-R3000 family processor. Not that at the time of this
1471 writing this option is still high experimental.
1478 config IP22_CPU_SCACHE
1483 # Support for a MIPS32 / MIPS64 style S-caches
1485 config MIPS_CPU_SCACHE
1489 config R5000_CPU_SCACHE
1493 config RM7000_CPU_SCACHE
1497 config SIBYTE_DMA_PAGEOPS
1498 bool "Use DMA to clear/copy pages"
1501 Instead of using the CPU to zero and copy pages, use a Data Mover
1502 channel. These DMA channels are otherwise unused by the standard
1503 SiByte Linux port. Seems to give a small performance benefit.
1505 config CPU_HAS_PREFETCH
1509 prompt "MIPS MT options"
1511 config MIPS_MT_DISABLED
1512 bool "Disable multithreading support."
1514 Use this option if your workload can't take advantage of
1515 MIPS hardware multithreading support. On systems that don't have
1516 the option of an MT-enabled processor this option will be the only
1517 option in this menu.
1520 bool "Use 1 TC on each available VPE for SMP"
1521 depends on SYS_SUPPORTS_MULTITHREADING
1522 select CPU_MIPSR2_IRQ_VI
1523 select CPU_MIPSR2_IRQ_EI
1525 select NR_CPUS_DEFAULT_2
1527 select SYS_SUPPORTS_SCHED_SMT if SMP
1528 select SYS_SUPPORTS_SMP
1531 This is a kernel model which is also known a VSMP or lately
1532 has been marketesed into SMVP.
1535 bool "SMTC: Use all TCs on all VPEs for SMP"
1536 depends on CPU_MIPS32_R2
1537 #depends on CPU_MIPS64_R2 # once there is hardware ...
1538 depends on SYS_SUPPORTS_MULTITHREADING
1539 select CPU_MIPSR2_IRQ_VI
1540 select CPU_MIPSR2_IRQ_EI
1542 select NR_CPUS_DEFAULT_8
1544 select SYS_SUPPORTS_SMP
1547 This is a kernel model which is known a SMTC or lately has been
1548 marketesed into SMVP.
1556 bool "SMT (multithreading) scheduler support"
1557 depends on SYS_SUPPORTS_SCHED_SMT
1560 SMT scheduler support improves the CPU scheduler's decision making
1561 when dealing with MIPS MT enabled cores at a cost of slightly
1562 increased overhead in some places. If unsure say N here.
1564 config SYS_SUPPORTS_SCHED_SMT
1568 config SYS_SUPPORTS_MULTITHREADING
1571 config MIPS_MT_FPAFF
1572 bool "Dynamic FPU affinity for FP-intensive threads"
1574 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1576 config MIPS_VPE_LOADER
1577 bool "VPE loader support."
1578 depends on SYS_SUPPORTS_MULTITHREADING
1579 select CPU_MIPSR2_IRQ_VI
1580 select CPU_MIPSR2_IRQ_EI
1583 Includes a loader for loading an elf relocatable object
1584 onto another VPE and running it.
1586 config MIPS_MT_SMTC_IM_BACKSTOP
1587 bool "Use per-TC register bits as backstop for inhibited IM bits"
1588 depends on MIPS_MT_SMTC
1591 To support multiple TC microthreads acting as "CPUs" within
1592 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1593 during interrupt handling. To support legacy drivers and interrupt
1594 controller management code, SMTC has a "backstop" to track and
1595 if necessary restore the interrupt mask. This has some performance
1596 impact on interrupt service overhead.
1598 config MIPS_MT_SMTC_IRQAFF
1599 bool "Support IRQ affinity API"
1600 depends on MIPS_MT_SMTC
1603 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1604 for SMTC Linux kernel. Requires platform support, of which
1605 an example can be found in the MIPS kernel i8259 and Malta
1606 platform code. Adds some overhead to interrupt dispatch, and
1607 should be used only if you know what you are doing.
1609 config MIPS_VPE_LOADER_TOM
1610 bool "Load VPE program into memory hidden from linux"
1611 depends on MIPS_VPE_LOADER
1614 The loader can use memory that is present but has been hidden from
1615 Linux using the kernel command line option "mem=xxMB". It's up to
1616 you to ensure the amount you put in the option and the space your
1617 program requires is less or equal to the amount physically present.
1619 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1620 config MIPS_VPE_APSP_API
1621 bool "Enable support for AP/SP API (RTLX)"
1622 depends on MIPS_VPE_LOADER
1625 config MIPS_APSP_KSPD
1627 depends on MIPS_VPE_APSP_API
1630 KSPD is a kernel daemon that accepts syscall requests from the SP
1631 side, actions them and returns the results. It also handles the
1632 "exit" syscall notifying other kernel modules the SP program is
1633 exiting. You probably want to say yes here.
1636 bool "MIPS CMP framework support"
1637 depends on SYS_SUPPORTS_MIPS_CMP
1638 select SYNC_R4K if BROKEN
1639 select SYS_SUPPORTS_SMP
1640 select SYS_SUPPORTS_SCHED_SMT if SMP
1641 select WEAK_ORDERING
1644 This is a placeholder option for the GCMP work. It will need to
1645 be handled differently...
1647 config SB1_PASS_1_WORKAROUNDS
1649 depends on CPU_SB1_PASS_1
1652 config SB1_PASS_2_WORKAROUNDS
1654 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1657 config SB1_PASS_2_1_WORKAROUNDS
1659 depends on CPU_SB1 && CPU_SB1_PASS_2
1662 config 64BIT_PHYS_ADDR
1668 config CPU_HAS_SMARTMIPS
1669 depends on SYS_SUPPORTS_SMARTMIPS
1670 bool "Support for the SmartMIPS ASE"
1672 SmartMIPS is a extension of the MIPS32 architecture aimed at
1673 increased security at both hardware and software level for
1674 smartcards. Enabling this option will allow proper use of the
1675 SmartMIPS instructions by Linux applications. However a kernel with
1676 this option will not work on a MIPS core without SmartMIPS core. If
1677 you don't know you probably don't have SmartMIPS and should say N
1684 # Vectored interrupt mode is an R2 feature
1686 config CPU_MIPSR2_IRQ_VI
1690 # Extended interrupt mode is an R2 feature
1692 config CPU_MIPSR2_IRQ_EI
1697 depends on !CPU_R3000
1700 config GENERIC_CLOCKEVENTS_BROADCAST
1706 config CPU_DADDI_WORKAROUNDS
1709 config CPU_R4000_WORKAROUNDS
1711 select CPU_R4400_WORKAROUNDS
1713 config CPU_R4400_WORKAROUNDS
1717 # Use the generic interrupt handling code in kernel/irq/:
1719 config GENERIC_HARDIRQS
1723 config GENERIC_IRQ_PROBE
1731 # - Highmem only makes sense for the 32-bit kernel.
1732 # - The current highmem code will only work properly on physically indexed
1733 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1734 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1735 # moment we protect the user and offer the highmem option only on machines
1736 # where it's known to be safe. This will not offer highmem on a few systems
1737 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1738 # indexed CPUs but we're playing safe.
1739 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1740 # know they might have memory configurations that could make use of highmem
1744 bool "High Memory Support"
1745 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1747 config CPU_SUPPORTS_HIGHMEM
1750 config SYS_SUPPORTS_HIGHMEM
1753 config SYS_SUPPORTS_SMARTMIPS
1756 config ARCH_FLATMEM_ENABLE
1760 config ARCH_DISCONTIGMEM_ENABLE
1762 default y if SGI_IP27
1764 Say Y to support efficient handling of discontiguous physical memory,
1765 for architectures which are either NUMA (Non-Uniform Memory Access)
1766 or have huge holes in the physical address space for other reasons.
1767 See <file:Documentation/vm/numa> for more.
1769 config ARCH_POPULATES_NODE_MAP
1772 config ARCH_SPARSEMEM_ENABLE
1774 select SPARSEMEM_STATIC
1778 depends on SYS_SUPPORTS_NUMA
1780 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1781 Access). This option improves performance on systems with more
1782 than two nodes; on two node systems it is generally better to
1783 leave it disabled; on single node systems disable this option
1786 config SYS_SUPPORTS_NUMA
1792 depends on NEED_MULTIPLE_NODES
1797 bool "Multi-Processing support"
1798 depends on SYS_SUPPORTS_SMP
1800 select USE_GENERIC_SMP_HELPERS
1802 This enables support for systems with more than one CPU. If you have
1803 a system with only one CPU, like most personal computers, say N. If
1804 you have a system with more than one CPU, say Y.
1806 If you say N here, the kernel will run on single and multiprocessor
1807 machines, but will use only one CPU of a multiprocessor machine. If
1808 you say Y here, the kernel will run on many, but not all,
1809 singleprocessor machines. On a singleprocessor machine, the kernel
1810 will run faster if you say N here.
1812 People using multiprocessor machines who say Y here should also say
1813 Y to "Enhanced Real Time Clock Support", below.
1815 See also the SMP-HOWTO available at
1816 <http://www.tldp.org/docs.html#howto>.
1818 If you don't know what to do here, say N.
1823 config SYS_SUPPORTS_MIPS_CMP
1826 config SYS_SUPPORTS_SMP
1829 config NR_CPUS_DEFAULT_1
1832 config NR_CPUS_DEFAULT_2
1835 config NR_CPUS_DEFAULT_4
1838 config NR_CPUS_DEFAULT_8
1841 config NR_CPUS_DEFAULT_16
1844 config NR_CPUS_DEFAULT_32
1847 config NR_CPUS_DEFAULT_64
1851 int "Maximum number of CPUs (2-64)"
1852 range 1 64 if NR_CPUS_DEFAULT_1
1854 default "1" if NR_CPUS_DEFAULT_1
1855 default "2" if NR_CPUS_DEFAULT_2
1856 default "4" if NR_CPUS_DEFAULT_4
1857 default "8" if NR_CPUS_DEFAULT_8
1858 default "16" if NR_CPUS_DEFAULT_16
1859 default "32" if NR_CPUS_DEFAULT_32
1860 default "64" if NR_CPUS_DEFAULT_64
1862 This allows you to specify the maximum number of CPUs which this
1863 kernel will support. The maximum supported value is 32 for 32-bit
1864 kernel and 64 for 64-bit kernels; the minimum value which makes
1865 sense is 1 for Qemu (useful only for kernel debugging purposes)
1866 and 2 for all others.
1868 This is purely to save memory - each supported CPU adds
1869 approximately eight kilobytes to the kernel image. For best
1870 performance should round up your number of processors to the next
1873 source "kernel/time/Kconfig"
1876 # Timer Interrupt Frequency Configuration
1880 prompt "Timer frequency"
1883 Allows the configuration of the timer frequency.
1886 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1889 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1892 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1895 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1898 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1901 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1904 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1908 config SYS_SUPPORTS_48HZ
1911 config SYS_SUPPORTS_100HZ
1914 config SYS_SUPPORTS_128HZ
1917 config SYS_SUPPORTS_250HZ
1920 config SYS_SUPPORTS_256HZ
1923 config SYS_SUPPORTS_1000HZ
1926 config SYS_SUPPORTS_1024HZ
1929 config SYS_SUPPORTS_ARBIT_HZ
1931 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1932 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1933 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1934 !SYS_SUPPORTS_1024HZ
1939 default 100 if HZ_100
1940 default 128 if HZ_128
1941 default 250 if HZ_250
1942 default 256 if HZ_256
1943 default 1000 if HZ_1000
1944 default 1024 if HZ_1024
1946 source "kernel/Kconfig.preempt"
1948 config MIPS_INSANE_LARGE
1949 bool "Support for large 64-bit configurations"
1950 depends on CPU_R10000 && 64BIT
1952 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1953 previous 64-bit processors which only supported 40 bit / 1TB. If you
1954 need processes of more than 1TB virtual address space, say Y here.
1955 This will result in additional memory usage, so it is not
1956 recommended for normal users.
1959 bool "Kexec system call (EXPERIMENTAL)"
1960 depends on EXPERIMENTAL
1962 kexec is a system call that implements the ability to shutdown your
1963 current kernel, and to start another kernel. It is like a reboot
1964 but it is independent of the system firmware. And like a reboot
1965 you can start any kernel with it, not just Linux.
1967 The name comes from the similarity to the exec system call.
1969 It is an ongoing process to be certain the hardware in a machine
1970 is properly shutdown, so do not be surprised if this code does not
1971 initially work for you. It may help to enable device hotplugging
1972 support. As of this writing the exact hardware interface is
1973 strongly in flux, so no good recommendation can be made.
1976 bool "Enable seccomp to safely compute untrusted bytecode"
1980 This kernel feature is useful for number crunching applications
1981 that may need to compute untrusted bytecode during their
1982 execution. By using pipes or other transports made available to
1983 the process as file descriptors supporting the read/write
1984 syscalls, it's possible to isolate those applications in
1985 their own address space using seccomp. Once seccomp is
1986 enabled via /proc/<pid>/seccomp, it cannot be disabled
1987 and the task is only allowed to execute a few safe syscalls
1988 defined by each seccomp mode.
1990 If unsure, say Y. Only embedded should say N here.
1994 config LOCKDEP_SUPPORT
1998 config STACKTRACE_SUPPORT
2002 source "init/Kconfig"
2004 config PROBE_INITRD_HEADER
2005 bool "Probe initrd header created by addinitrd"
2006 depends on BLK_DEV_INITRD
2008 Probe initrd header at the last page of kernel image.
2009 Say Y here if you are using arch/mips/boot/addinitrd.c to
2010 add initrd or initramfs image to the kernel image.
2013 source "kernel/Kconfig.freezer"
2015 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2023 bool "Support for PCI controller"
2024 depends on HW_HAS_PCI
2027 Find out whether you have a PCI motherboard. PCI is the name of a
2028 bus system, i.e. the way the CPU talks to the other stuff inside
2029 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2035 source "drivers/pci/Kconfig"
2038 # ISA support is now enabled via select. Too many systems still have the one
2039 # or other ISA chip on the board that users don't know about so don't expect
2040 # users to choose the right thing ...
2047 depends on HW_HAS_EISA
2049 select GENERIC_ISA_DMA
2051 The Extended Industry Standard Architecture (EISA) bus was
2052 developed as an open alternative to the IBM MicroChannel bus.
2054 The EISA bus provided some of the features of the IBM MicroChannel
2055 bus while maintaining backward compatibility with cards made for
2056 the older ISA bus. The EISA bus saw limited use between 1988 and
2057 1995 when it was made obsolete by the PCI bus.
2059 Say Y here if you are building a kernel for an EISA-based machine.
2063 source "drivers/eisa/Kconfig"
2066 bool "TURBOchannel support"
2067 depends on MACH_DECSTATION
2069 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2070 processors. Documentation on writing device drivers for TurboChannel
2072 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2075 # bool "Access.Bus support"
2088 source "drivers/pcmcia/Kconfig"
2090 source "drivers/pci/hotplug/Kconfig"
2094 menu "Executable file formats"
2096 source "fs/Kconfig.binfmt"
2101 config MIPS32_COMPAT
2102 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2105 Select this option if you want Linux/MIPS 32-bit binary
2106 compatibility. Since all software available for Linux/MIPS is
2107 currently 32-bit you should say Y here.
2111 depends on MIPS32_COMPAT
2114 config SYSVIPC_COMPAT
2116 depends on COMPAT && SYSVIPC
2120 bool "Kernel support for o32 binaries"
2121 depends on MIPS32_COMPAT
2123 Select this option if you want to run o32 binaries. These are pure
2124 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2125 existing binaries are in this format.
2130 bool "Kernel support for n32 binaries"
2131 depends on MIPS32_COMPAT
2133 Select this option if you want to run n32 binaries. These are
2134 64-bit binaries using 32-bit quantities for addressing and certain
2135 data that would normally be 64-bit. They are used in special
2142 default y if MIPS32_O32 || MIPS32_N32
2146 menu "Power management options"
2148 config ARCH_HIBERNATION_POSSIBLE
2150 depends on SYS_SUPPORTS_HOTPLUG_CPU
2152 config ARCH_SUSPEND_POSSIBLE
2154 depends on SYS_SUPPORTS_HOTPLUG_CPU
2156 source "kernel/power/Kconfig"
2160 source "net/Kconfig"
2162 source "drivers/Kconfig"
2166 source "arch/mips/Kconfig.debug"
2168 source "security/Kconfig"
2170 source "crypto/Kconfig"
2172 source "lib/Kconfig"