7 # Horrible source of confusion. Die, die, die ...
9 select RTC_LIB if !MACH_LM2F
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
75 select SYS_HAS_CPU_NEVADA
76 select SYS_HAS_EARLY_PRINTK
77 select SYS_SUPPORTS_32BIT_KERNEL
78 select SYS_SUPPORTS_64BIT_KERNEL
79 select SYS_SUPPORTS_LITTLE_ENDIAN
81 config MACH_DECSTATION
88 select CPU_DADDI_WORKAROUNDS if 64BIT
89 select CPU_R4000_WORKAROUNDS if 64BIT
90 select CPU_R4400_WORKAROUNDS if 64BIT
91 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_R3000
95 select SYS_HAS_CPU_R4X00
96 select SYS_SUPPORTS_32BIT_KERNEL
97 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SYS_SUPPORTS_128HZ
100 select SYS_SUPPORTS_256HZ
101 select SYS_SUPPORTS_1024HZ
103 This enables support for DEC's MIPS based workstations. For details
104 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
105 DECstation porting pages on <http://decstation.unix-ag.org/>.
107 If you have one of the following DECstation Models you definitely
108 want to choose R4xx0 for the CPU Type:
115 otherwise choose R3000.
118 bool "Jazz family of machines"
121 select ARCH_MAY_HAVE_PC_FDC
124 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
125 select GENERIC_ISA_DMA
130 select SYS_HAS_CPU_R4X00
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
133 select SYS_SUPPORTS_100HZ
135 This a family of machines based on the MIPS R4030 chipset which was
136 used by several vendors to build RISC/os and Windows NT workstations.
137 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
138 Olivetti M700-10 workstations.
141 bool "LASAT Networks platforms"
144 select DMA_NONCOHERENT
145 select SYS_HAS_EARLY_PRINTK
148 select PCI_GT64XXX_PCI0
150 select R5000_CPU_SCACHE
151 select SYS_HAS_CPU_R5000
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
154 select SYS_SUPPORTS_LITTLE_ENDIAN
157 bool "Lemote Loongson 2E based machines"
160 bool "Lemote Loongson 2F based machines"
163 bool "MIPS Malta board"
164 select ARCH_MAY_HAVE_PC_FDC
169 select DMA_NONCOHERENT
170 select GENERIC_ISA_DMA
176 select MIPS_BOARDS_GEN
178 select MIPS_CPU_SCACHE
179 select PCI_GT64XXX_PCI0
182 select SYS_HAS_CPU_MIPS32_R1
183 select SYS_HAS_CPU_MIPS32_R2
184 select SYS_HAS_CPU_MIPS64_R1
185 select SYS_HAS_CPU_NEVADA
186 select SYS_HAS_CPU_RM7000
187 select SYS_HAS_EARLY_PRINTK
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_SUPPORTS_64BIT_KERNEL
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_SUPPORTS_LITTLE_ENDIAN
192 select SYS_SUPPORTS_MIPS_CMP if BROKEN # because SYNC_R4K is broken
193 select SYS_SUPPORTS_MULTITHREADING
194 select SYS_SUPPORTS_SMARTMIPS
196 This enables support for the MIPS Technologies Malta evaluation
200 bool 'MIPS simulator (MIPSsim)'
203 select DMA_NONCOHERENT
204 select SYS_HAS_EARLY_PRINTK
207 select SYS_HAS_CPU_MIPS32_R1
208 select SYS_HAS_CPU_MIPS32_R2
209 select SYS_HAS_EARLY_PRINTK
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_BIG_ENDIAN
212 select SYS_SUPPORTS_MULTITHREADING
213 select SYS_SUPPORTS_LITTLE_ENDIAN
215 This option enables support for MIPS Technologies MIPSsim software
219 bool "NEC EMMA2RH Mark-eins board"
223 This enables support for the NEC Electronics Mark-eins boards.
226 bool "NEC VR4100 series based machines"
229 select SYS_HAS_CPU_VR41XX
232 bool "NXP STB220 board"
235 Support for NXP Semiconductors STB220 Development Board.
242 Support for NXP Semiconductors STB225 Development Board.
245 bool "NXP PNX8550 based JBS board"
247 select SYS_SUPPORTS_LITTLE_ENDIAN
249 config PNX8550_STB810
250 bool "NXP PNX8550 based STB810 board"
252 select SYS_SUPPORTS_LITTLE_ENDIAN
255 bool "PMC-Sierra MSP chipsets"
256 depends on EXPERIMENTAL
257 select DMA_NONCOHERENT
259 select NO_EXCEPT_FILL
261 select SYS_HAS_CPU_MIPS32_R1
262 select SYS_HAS_CPU_MIPS32_R2
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_BIG_ENDIAN
267 select SERIAL_8250_CONSOLE
269 This adds support for the PMC-Sierra family of Multi-Service
270 Processor System-On-A-Chips. These parts include a number
271 of integrated peripherals, interfaces and DSPs in addition to
272 a variety of MIPS cores.
275 bool "PMC-Sierra Yosemite eval board"
284 select SYS_HAS_CPU_RM9000
285 select SYS_HAS_EARLY_PRINTK
286 select SYS_SUPPORTS_32BIT_KERNEL
287 select SYS_SUPPORTS_64BIT_KERNEL
288 select SYS_SUPPORTS_BIG_ENDIAN
289 select SYS_SUPPORTS_HIGHMEM
290 select SYS_SUPPORTS_SMP
292 Yosemite is an evaluation board for the RM9000x2 processor
293 manufactured by PMC-Sierra.
296 bool "SGI IP22 (Indy/Indigo2)"
302 select DEFAULT_SGI_PARTITION
303 select DMA_NONCOHERENT
307 select IP22_CPU_SCACHE
309 select GENERIC_ISA_DMA_SUPPORT_BROKEN
311 select SGI_HAS_INDYDOG
317 select SYS_HAS_CPU_R4X00
318 select SYS_HAS_CPU_R5000
319 select SYS_HAS_EARLY_PRINTK
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_64BIT_KERNEL
322 select SYS_SUPPORTS_BIG_ENDIAN
324 This are the SGI Indy, Challenge S and Indigo2, as well as certain
325 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
326 that runs on these, say Y here.
329 bool "SGI IP27 (Origin200/2000)"
333 select DEFAULT_SGI_PARTITION
335 select SYS_HAS_EARLY_PRINTK
337 select NR_CPUS_DEFAULT_64
338 select SYS_HAS_CPU_R10000
339 select SYS_SUPPORTS_64BIT_KERNEL
340 select SYS_SUPPORTS_BIG_ENDIAN
341 select SYS_SUPPORTS_NUMA
342 select SYS_SUPPORTS_SMP
344 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
345 workstations. To compile a Linux kernel that runs on these, say Y
349 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
350 depends on EXPERIMENTAL
356 select DEFAULT_SGI_PARTITION
357 select DMA_NONCOHERENT
358 select GENERIC_ISA_DMA_SUPPORT_BROKEN
364 select SGI_HAS_INDYDOG
370 select SYS_HAS_CPU_R10000
371 select SYS_HAS_EARLY_PRINTK
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_BIG_ENDIAN
375 This is the SGI Indigo2 with R10000 processor. To compile a Linux
376 kernel that runs on these, say Y here.
385 select DMA_NONCOHERENT
388 select R5000_CPU_SCACHE
389 select RM7000_CPU_SCACHE
390 select SYS_HAS_CPU_R5000
391 select SYS_HAS_CPU_R10000 if BROKEN
392 select SYS_HAS_CPU_RM7000
393 select SYS_HAS_CPU_NEVADA
394 select SYS_SUPPORTS_64BIT_KERNEL
395 select SYS_SUPPORTS_BIG_ENDIAN
397 If you want this kernel to run on SGI O2 workstation, say Y here.
400 bool "Sibyte BCM91120C-CRhine"
401 depends on EXPERIMENTAL
404 select SIBYTE_BCM1120
406 select SYS_HAS_CPU_SB1
407 select SYS_SUPPORTS_BIG_ENDIAN
408 select SYS_SUPPORTS_LITTLE_ENDIAN
411 bool "Sibyte BCM91120x-Carmel"
412 depends on EXPERIMENTAL
415 select SIBYTE_BCM1120
417 select SYS_HAS_CPU_SB1
418 select SYS_SUPPORTS_BIG_ENDIAN
419 select SYS_SUPPORTS_LITTLE_ENDIAN
422 bool "Sibyte BCM91125C-CRhone"
423 depends on EXPERIMENTAL
426 select SIBYTE_BCM1125
428 select SYS_HAS_CPU_SB1
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_HIGHMEM
431 select SYS_SUPPORTS_LITTLE_ENDIAN
434 bool "Sibyte BCM91125E-Rhone"
435 depends on EXPERIMENTAL
438 select SIBYTE_BCM1125H
440 select SYS_HAS_CPU_SB1
441 select SYS_SUPPORTS_BIG_ENDIAN
442 select SYS_SUPPORTS_LITTLE_ENDIAN
445 bool "Sibyte BCM91250A-SWARM"
448 select NR_CPUS_DEFAULT_2
451 select SYS_HAS_CPU_SB1
452 select SYS_SUPPORTS_BIG_ENDIAN
453 select SYS_SUPPORTS_HIGHMEM
454 select SYS_SUPPORTS_LITTLE_ENDIAN
455 select ZONE_DMA32 if 64BIT
457 config SIBYTE_LITTLESUR
458 bool "Sibyte BCM91250C2-LittleSur"
459 depends on EXPERIMENTAL
462 select NR_CPUS_DEFAULT_2
465 select SYS_HAS_CPU_SB1
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_HIGHMEM
468 select SYS_SUPPORTS_LITTLE_ENDIAN
470 config SIBYTE_SENTOSA
471 bool "Sibyte BCM91250E-Sentosa"
472 depends on EXPERIMENTAL
475 select NR_CPUS_DEFAULT_2
478 select SYS_HAS_CPU_SB1
479 select SYS_SUPPORTS_BIG_ENDIAN
480 select SYS_SUPPORTS_LITTLE_ENDIAN
483 bool "Sibyte BCM91480B-BigSur"
486 select NR_CPUS_DEFAULT_4
487 select SIBYTE_BCM1x80
489 select SYS_HAS_CPU_SB1
490 select SYS_SUPPORTS_BIG_ENDIAN
491 select SYS_SUPPORTS_HIGHMEM
492 select SYS_SUPPORTS_LITTLE_ENDIAN
493 select ZONE_DMA32 if 64BIT
496 bool "SNI RM200/300/400"
497 select ARC if CPU_LITTLE_ENDIAN
498 select ARC32 if CPU_LITTLE_ENDIAN
499 select SNIPROM if CPU_BIG_ENDIAN
500 select ARCH_MAY_HAVE_PC_FDC
504 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
505 select DMA_NONCOHERENT
506 select GENERIC_ISA_DMA
513 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
514 select SYS_HAS_CPU_R4X00
515 select SYS_HAS_CPU_R5000
516 select SYS_HAS_CPU_R10000
517 select R5000_CPU_SCACHE
518 select SYS_HAS_EARLY_PRINTK
519 select SYS_SUPPORTS_32BIT_KERNEL
520 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_HIGHMEM
523 select SYS_SUPPORTS_LITTLE_ENDIAN
525 The SNI RM200/300/400 are MIPS-based machines manufactured by
526 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
527 Technology and now in turn merged with Fujitsu. Say Y here to
528 support this machine type.
531 bool "Toshiba TX39 series based machines"
534 bool "Toshiba TX49 series based machines"
536 config MIKROTIK_RB532
537 bool "Mikrotik RB532 boards"
540 select DMA_NONCOHERENT
543 select SYS_HAS_CPU_MIPS32_R1
544 select SYS_SUPPORTS_32BIT_KERNEL
545 select SYS_SUPPORTS_LITTLE_ENDIAN
548 select ARCH_REQUIRE_GPIOLIB
550 Support the Mikrotik(tm) RouterBoard 532 series,
551 based on the IDT RC32434 SoC.
554 bool "Wind River PPMC board"
559 select DMA_NONCOHERENT
561 select PCI_GT64XXX_PCI0
563 select SYS_HAS_CPU_MIPS32_R1
564 select SYS_HAS_CPU_MIPS32_R2
565 select SYS_HAS_CPU_MIPS64_R1
566 select SYS_HAS_CPU_NEVADA
567 select SYS_HAS_CPU_RM7000
568 select SYS_SUPPORTS_32BIT_KERNEL
569 select SYS_SUPPORTS_64BIT_KERNEL
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_LITTLE_ENDIAN
573 This enables support for the Wind River MIPS32 4KC PPMC evaluation
574 board, which is based on GT64120 bridge chip.
576 config CAVIUM_OCTEON_SIMULATOR
577 bool "Support for the Cavium Networks Octeon Simulator"
579 select 64BIT_PHYS_ADDR
581 select SYS_SUPPORTS_64BIT_KERNEL
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_HIGHMEM
584 select SYS_HAS_CPU_CAVIUM_OCTEON
586 The Octeon simulator is software performance model of the Cavium
587 Octeon Processor. It supports simulating Octeon processors on x86
590 config CAVIUM_OCTEON_REFERENCE_BOARD
591 bool "Support for the Cavium Networks Octeon reference board"
593 select 64BIT_PHYS_ADDR
595 select SYS_SUPPORTS_64BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_HIGHMEM
598 select SYS_HAS_EARLY_PRINTK
599 select SYS_HAS_CPU_CAVIUM_OCTEON
602 This option supports all of the Octeon reference boards from Cavium
603 Networks. It builds a kernel that dynamically determines the Octeon
604 CPU type and supports all known board reference implementations.
605 Some of the supported boards are:
612 Say Y here for most Octeon reference boards.
616 source "arch/mips/alchemy/Kconfig"
617 source "arch/mips/basler/excite/Kconfig"
618 source "arch/mips/jazz/Kconfig"
619 source "arch/mips/lasat/Kconfig"
620 source "arch/mips/pmc-sierra/Kconfig"
621 source "arch/mips/sgi-ip27/Kconfig"
622 source "arch/mips/sibyte/Kconfig"
623 source "arch/mips/txx9/Kconfig"
624 source "arch/mips/vr41xx/Kconfig"
625 source "arch/mips/cavium-octeon/Kconfig"
626 source "arch/mips/lemote/lm2e/Kconfig"
627 source "arch/mips/lemote/lm2f/Kconfig"
631 config RWSEM_GENERIC_SPINLOCK
635 config RWSEM_XCHGADD_ALGORITHM
638 config ARCH_HAS_ILOG2_U32
642 config ARCH_HAS_ILOG2_U64
646 config ARCH_SUPPORTS_OPROFILE
648 default y if !MIPS_MT_SMTC
650 config GENERIC_FIND_NEXT_BIT
654 config GENERIC_HWEIGHT
658 config GENERIC_CALIBRATE_DELAY
662 config GENERIC_CLOCKEVENTS
670 config GENERIC_CMOS_UPDATE
674 config SCHED_OMIT_FRAME_POINTER
678 config GENERIC_HARDIRQS_NO__DO_IRQ
682 # Select some configuration options automatically based on user selections.
687 config ARCH_MAY_HAVE_PC_FDC
733 select ARCH_REQUIRE_GPIOLIB
742 config DMA_NONCOHERENT
744 select DMA_NEED_PCI_MAP_STATE
746 config DMA_NEED_PCI_MAP_STATE
750 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
751 depends on SYS_HAS_EARLY_PRINTK
754 This option enables special console drivers which allow the kernel
755 to print messages very early in the bootup process.
757 This is useful for kernel debugging when your machine crashes very
758 early before the console code is initialized. For normal operation,
759 it is not recommended because it looks ugly on some machines and
760 doesn't cooperate with an X server. You should normally say N here,
761 unless you want to debug such a crash.
763 config SYS_HAS_EARLY_PRINTK
782 config MIPS_DISABLE_OBSOLETE_IDE
791 config GENERIC_ISA_DMA
793 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
795 config GENERIC_ISA_DMA_SUPPORT_BROKEN
797 select GENERIC_ISA_DMA
803 # Endianess selection. Sufficiently obscure so many users don't know what to
804 # answer,so we try hard to limit the available choices. Also the use of a
805 # choice statement should be more obvious to the user.
808 prompt "Endianess selection"
810 Some MIPS machines can be configured for either little or big endian
811 byte order. These modes require different kernels and a different
812 Linux distribution. In general there is one preferred byteorder for a
813 particular system but some systems are just as commonly used in the
814 one or the other endianness.
816 config CPU_BIG_ENDIAN
818 depends on SYS_SUPPORTS_BIG_ENDIAN
820 config CPU_LITTLE_ENDIAN
822 depends on SYS_SUPPORTS_LITTLE_ENDIAN
827 config SYS_SUPPORTS_APM_EMULATION
830 config SYS_SUPPORTS_BIG_ENDIAN
833 config SYS_SUPPORTS_LITTLE_ENDIAN
860 config IRQ_CPU_OCTEON
863 config MIPS_BOARDS_GEN
866 config PCI_GT64XXX_PCI0
869 config NO_EXCEPT_FILL
880 select DMA_NONCOHERENT
883 select SYS_HAS_CPU_R5500
884 select SYS_SUPPORTS_32BIT_KERNEL
885 select SYS_SUPPORTS_64BIT_KERNEL
886 select SYS_SUPPORTS_BIG_ENDIAN
893 select DMA_NONCOHERENT
894 select SYS_HAS_CPU_MIPS32_R2
895 select SYS_SUPPORTS_32BIT_KERNEL
896 select SYS_SUPPORTS_LITTLE_ENDIAN
897 select SYS_SUPPORTS_BIG_ENDIAN
899 select CPU_MIPSR2_IRQ_VI
911 select DMA_NONCOHERENT
913 select SYS_HAS_CPU_MIPS32_R1
914 select SYS_HAS_EARLY_PRINTK
915 select SYS_SUPPORTS_32BIT_KERNEL
924 config SGI_HAS_INDYDOG
942 config DEFAULT_SGI_PARTITION
954 config MIPS_L1_CACHE_SHIFT
956 default "4" if MACH_DECSTATION || MIKROTIK_RB532
957 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
958 default "4" if PMC_MSP4200_EVAL
961 config HAVE_STD_PC_SERIAL_PORT
965 bool "ARC console support"
966 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
970 depends on MACH_JAZZ || SNI_RM || SGI_IP32
975 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
990 config CPU_LOONGSON2E
992 depends on SYS_HAS_CPU_LOONGSON2E
995 The Loongson 2E processor implements the MIPS III instruction set
996 with many extensions.
998 config CPU_LOONGSON2F
1000 depends on SYS_HAS_CPU_LOONGSON2F
1001 select CPU_LOONGSON2
1003 The Loongson 2F processor implements the MIPS III instruction set
1004 with many extensions.
1006 config CPU_MIPS32_R1
1007 bool "MIPS32 Release 1"
1008 depends on SYS_HAS_CPU_MIPS32_R1
1010 select CPU_HAS_PREFETCH
1011 select CPU_SUPPORTS_32BIT_KERNEL
1012 select CPU_SUPPORTS_HIGHMEM
1014 Choose this option to build a kernel for release 1 or later of the
1015 MIPS32 architecture. Most modern embedded systems with a 32-bit
1016 MIPS processor are based on a MIPS32 processor. If you know the
1017 specific type of processor in your system, choose those that one
1018 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1019 Release 2 of the MIPS32 architecture is available since several
1020 years so chances are you even have a MIPS32 Release 2 processor
1021 in which case you should choose CPU_MIPS32_R2 instead for better
1024 config CPU_MIPS32_R2
1025 bool "MIPS32 Release 2"
1026 depends on SYS_HAS_CPU_MIPS32_R2
1028 select CPU_HAS_PREFETCH
1029 select CPU_SUPPORTS_32BIT_KERNEL
1030 select CPU_SUPPORTS_HIGHMEM
1032 Choose this option to build a kernel for release 2 or later of the
1033 MIPS32 architecture. Most modern embedded systems with a 32-bit
1034 MIPS processor are based on a MIPS32 processor. If you know the
1035 specific type of processor in your system, choose those that one
1036 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1038 config CPU_MIPS64_R1
1039 bool "MIPS64 Release 1"
1040 depends on SYS_HAS_CPU_MIPS64_R1
1042 select CPU_HAS_PREFETCH
1043 select CPU_SUPPORTS_32BIT_KERNEL
1044 select CPU_SUPPORTS_64BIT_KERNEL
1045 select CPU_SUPPORTS_HIGHMEM
1047 Choose this option to build a kernel for release 1 or later of the
1048 MIPS64 architecture. Many modern embedded systems with a 64-bit
1049 MIPS processor are based on a MIPS64 processor. If you know the
1050 specific type of processor in your system, choose those that one
1051 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1052 Release 2 of the MIPS64 architecture is available since several
1053 years so chances are you even have a MIPS64 Release 2 processor
1054 in which case you should choose CPU_MIPS64_R2 instead for better
1057 config CPU_MIPS64_R2
1058 bool "MIPS64 Release 2"
1059 depends on SYS_HAS_CPU_MIPS64_R2
1061 select CPU_HAS_PREFETCH
1062 select CPU_SUPPORTS_32BIT_KERNEL
1063 select CPU_SUPPORTS_64BIT_KERNEL
1064 select CPU_SUPPORTS_HIGHMEM
1066 Choose this option to build a kernel for release 2 or later of the
1067 MIPS64 architecture. Many modern embedded systems with a 64-bit
1068 MIPS processor are based on a MIPS64 processor. If you know the
1069 specific type of processor in your system, choose those that one
1070 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1074 depends on SYS_HAS_CPU_R3000
1076 select CPU_SUPPORTS_32BIT_KERNEL
1077 select CPU_SUPPORTS_HIGHMEM
1079 Please make sure to pick the right CPU type. Linux/MIPS is not
1080 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1081 *not* work on R4000 machines and vice versa. However, since most
1082 of the supported machines have an R4000 (or similar) CPU, R4x00
1083 might be a safe bet. If the resulting kernel does not work,
1084 try to recompile with R3000.
1088 depends on SYS_HAS_CPU_TX39XX
1089 select CPU_SUPPORTS_32BIT_KERNEL
1093 depends on SYS_HAS_CPU_VR41XX
1094 select CPU_SUPPORTS_32BIT_KERNEL
1095 select CPU_SUPPORTS_64BIT_KERNEL
1097 The options selects support for the NEC VR4100 series of processors.
1098 Only choose this option if you have one of these processors as a
1099 kernel built with this option will not run on any other type of
1100 processor or vice versa.
1104 depends on SYS_HAS_CPU_R4300
1106 select CPU_SUPPORTS_32BIT_KERNEL
1107 select CPU_SUPPORTS_64BIT_KERNEL
1109 MIPS Technologies R4300-series processors.
1113 depends on SYS_HAS_CPU_R4X00
1115 select CPU_SUPPORTS_32BIT_KERNEL
1116 select CPU_SUPPORTS_64BIT_KERNEL
1118 MIPS Technologies R4000-series processors other than 4300, including
1119 the R4000, R4400, R4600, and 4700.
1123 depends on SYS_HAS_CPU_TX49XX
1125 select CPU_HAS_PREFETCH
1126 select CPU_SUPPORTS_32BIT_KERNEL
1127 select CPU_SUPPORTS_64BIT_KERNEL
1131 depends on SYS_HAS_CPU_R5000
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_64BIT_KERNEL
1136 MIPS Technologies R5000-series processors other than the Nevada.
1140 depends on SYS_HAS_CPU_R5432
1142 select CPU_SUPPORTS_32BIT_KERNEL
1143 select CPU_SUPPORTS_64BIT_KERNEL
1147 depends on SYS_HAS_CPU_R5500
1149 select CPU_SUPPORTS_32BIT_KERNEL
1150 select CPU_SUPPORTS_64BIT_KERNEL
1152 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1157 depends on EXPERIMENTAL
1159 depends on SYS_HAS_CPU_R6000
1160 select CPU_SUPPORTS_32BIT_KERNEL
1162 MIPS Technologies R6000 and R6000A series processors. Note these
1163 processors are extremely rare and the support for them is incomplete.
1167 depends on SYS_HAS_CPU_NEVADA
1169 select CPU_SUPPORTS_32BIT_KERNEL
1170 select CPU_SUPPORTS_64BIT_KERNEL
1172 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1176 depends on EXPERIMENTAL
1177 depends on SYS_HAS_CPU_R8000
1179 select CPU_HAS_PREFETCH
1180 select CPU_SUPPORTS_64BIT_KERNEL
1182 MIPS Technologies R8000 processors. Note these processors are
1183 uncommon and the support for them is incomplete.
1187 depends on SYS_HAS_CPU_R10000
1189 select CPU_HAS_PREFETCH
1190 select CPU_SUPPORTS_32BIT_KERNEL
1191 select CPU_SUPPORTS_64BIT_KERNEL
1192 select CPU_SUPPORTS_HIGHMEM
1194 MIPS Technologies R10000-series processors.
1198 depends on SYS_HAS_CPU_RM7000
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1203 select CPU_SUPPORTS_HIGHMEM
1207 depends on SYS_HAS_CPU_RM9000
1209 select CPU_HAS_PREFETCH
1210 select CPU_SUPPORTS_32BIT_KERNEL
1211 select CPU_SUPPORTS_64BIT_KERNEL
1212 select CPU_SUPPORTS_HIGHMEM
1213 select WEAK_ORDERING
1217 depends on SYS_HAS_CPU_SB1
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1221 select CPU_SUPPORTS_HIGHMEM
1222 select WEAK_ORDERING
1224 config CPU_CAVIUM_OCTEON
1225 bool "Cavium Octeon processor"
1226 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1228 select IRQ_CPU_OCTEON
1229 select CPU_HAS_PREFETCH
1230 select CPU_SUPPORTS_64BIT_KERNEL
1231 select SYS_SUPPORTS_SMP
1232 select NR_CPUS_DEFAULT_16
1233 select WEAK_ORDERING
1234 select WEAK_REORDERING_BEYOND_LLSC
1235 select CPU_SUPPORTS_HIGHMEM
1237 The Cavium Octeon processor is a highly integrated chip containing
1238 many ethernet hardware widgets for networking tasks. The processor
1239 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1240 Full details can be found at http://www.caviumnetworks.com.
1244 config CPU_LOONGSON2
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_64BIT_KERNEL
1248 select CPU_SUPPORTS_HIGHMEM
1250 config SYS_HAS_CPU_LOONGSON2E
1253 config SYS_HAS_CPU_LOONGSON2F
1256 config SYS_HAS_CPU_MIPS32_R1
1259 config SYS_HAS_CPU_MIPS32_R2
1262 config SYS_HAS_CPU_MIPS64_R1
1265 config SYS_HAS_CPU_MIPS64_R2
1268 config SYS_HAS_CPU_R3000
1271 config SYS_HAS_CPU_TX39XX
1274 config SYS_HAS_CPU_VR41XX
1277 config SYS_HAS_CPU_R4300
1280 config SYS_HAS_CPU_R4X00
1283 config SYS_HAS_CPU_TX49XX
1286 config SYS_HAS_CPU_R5000
1289 config SYS_HAS_CPU_R5432
1292 config SYS_HAS_CPU_R5500
1295 config SYS_HAS_CPU_R6000
1298 config SYS_HAS_CPU_NEVADA
1301 config SYS_HAS_CPU_R8000
1304 config SYS_HAS_CPU_R10000
1307 config SYS_HAS_CPU_RM7000
1310 config SYS_HAS_CPU_RM9000
1313 config SYS_HAS_CPU_SB1
1316 config SYS_HAS_CPU_CAVIUM_OCTEON
1320 # CPU may reorder R->R, R->W, W->R, W->W
1321 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1323 config WEAK_ORDERING
1327 # CPU may reorder reads and writes beyond LL/SC
1328 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1330 config WEAK_REORDERING_BEYOND_LLSC
1335 # These two indicate any level of the MIPS32 and MIPS64 architecture
1339 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1343 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1346 # These two indicate the revision of the architecture, either Release 1 or Release 2
1350 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1354 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1356 config SYS_SUPPORTS_32BIT_KERNEL
1358 config SYS_SUPPORTS_64BIT_KERNEL
1360 config CPU_SUPPORTS_32BIT_KERNEL
1362 config CPU_SUPPORTS_64BIT_KERNEL
1366 # Set to y for ptrace access to watch registers.
1368 config HARDWARE_WATCHPOINTS
1370 default y if CPU_MIPSR1 || CPU_MIPSR2
1376 prompt "Kernel code model"
1378 You should only select this option if you have a workload that
1379 actually benefits from 64-bit processing or if your machine has
1380 large memory. You will only be presented a single option in this
1381 menu if your system does not support both 32-bit and 64-bit kernels.
1384 bool "32-bit kernel"
1385 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1388 Select this option if you want to build a 32-bit kernel.
1390 bool "64-bit kernel"
1391 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1392 select HAVE_SYSCALL_WRAPPERS
1394 Select this option if you want to build a 64-bit kernel.
1399 prompt "Kernel page size"
1400 default PAGE_SIZE_4KB
1402 config PAGE_SIZE_4KB
1405 This option select the standard 4kB Linux page size. On some
1406 R3000-family processors this is the only available page size. Using
1407 4kB page size will minimize memory consumption and is therefore
1408 recommended for low memory systems.
1410 config PAGE_SIZE_8KB
1412 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1414 Using 8kB page size will result in higher performance kernel at
1415 the price of higher memory consumption. This option is available
1416 only on R8000 and cnMIPS processors. Note that you will need a
1417 suitable Linux distribution to support this.
1419 config PAGE_SIZE_16KB
1421 depends on !CPU_R3000 && !CPU_TX39XX
1423 Using 16kB page size will result in higher performance kernel at
1424 the price of higher memory consumption. This option is available on
1425 all non-R3000 family processors. Note that you will need a suitable
1426 Linux distribution to support this.
1428 config PAGE_SIZE_32KB
1430 depends on CPU_CAVIUM_OCTEON
1432 Using 32kB page size will result in higher performance kernel at
1433 the price of higher memory consumption. This option is available
1434 only on cnMIPS cores. Note that you will need a suitable Linux
1435 distribution to support this.
1437 config PAGE_SIZE_64KB
1439 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1441 Using 64kB page size will result in higher performance kernel at
1442 the price of higher memory consumption. This option is available on
1443 all non-R3000 family processor. Not that at the time of this
1444 writing this option is still high experimental.
1451 config IP22_CPU_SCACHE
1456 # Support for a MIPS32 / MIPS64 style S-caches
1458 config MIPS_CPU_SCACHE
1462 config R5000_CPU_SCACHE
1466 config RM7000_CPU_SCACHE
1470 config SIBYTE_DMA_PAGEOPS
1471 bool "Use DMA to clear/copy pages"
1474 Instead of using the CPU to zero and copy pages, use a Data Mover
1475 channel. These DMA channels are otherwise unused by the standard
1476 SiByte Linux port. Seems to give a small performance benefit.
1478 config CPU_HAS_PREFETCH
1482 prompt "MIPS MT options"
1484 config MIPS_MT_DISABLED
1485 bool "Disable multithreading support."
1487 Use this option if your workload can't take advantage of
1488 MIPS hardware multithreading support. On systems that don't have
1489 the option of an MT-enabled processor this option will be the only
1490 option in this menu.
1493 bool "Use 1 TC on each available VPE for SMP"
1494 depends on SYS_SUPPORTS_MULTITHREADING
1495 select CPU_MIPSR2_IRQ_VI
1496 select CPU_MIPSR2_IRQ_EI
1498 select NR_CPUS_DEFAULT_2
1500 select SYS_SUPPORTS_SCHED_SMT if SMP
1501 select SYS_SUPPORTS_SMP
1504 This is a kernel model which is also known a VSMP or lately
1505 has been marketesed into SMVP.
1508 bool "SMTC: Use all TCs on all VPEs for SMP"
1509 depends on CPU_MIPS32_R2
1510 #depends on CPU_MIPS64_R2 # once there is hardware ...
1511 depends on SYS_SUPPORTS_MULTITHREADING
1512 select CPU_MIPSR2_IRQ_VI
1513 select CPU_MIPSR2_IRQ_EI
1515 select NR_CPUS_DEFAULT_8
1517 select SYS_SUPPORTS_SMP
1520 This is a kernel model which is known a SMTC or lately has been
1521 marketesed into SMVP.
1529 bool "SMT (multithreading) scheduler support"
1530 depends on SYS_SUPPORTS_SCHED_SMT
1533 SMT scheduler support improves the CPU scheduler's decision making
1534 when dealing with MIPS MT enabled cores at a cost of slightly
1535 increased overhead in some places. If unsure say N here.
1537 config SYS_SUPPORTS_SCHED_SMT
1541 config SYS_SUPPORTS_MULTITHREADING
1544 config MIPS_MT_FPAFF
1545 bool "Dynamic FPU affinity for FP-intensive threads"
1547 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1549 config MIPS_VPE_LOADER
1550 bool "VPE loader support."
1551 depends on SYS_SUPPORTS_MULTITHREADING
1552 select CPU_MIPSR2_IRQ_VI
1553 select CPU_MIPSR2_IRQ_EI
1556 Includes a loader for loading an elf relocatable object
1557 onto another VPE and running it.
1559 config MIPS_MT_SMTC_IM_BACKSTOP
1560 bool "Use per-TC register bits as backstop for inhibited IM bits"
1561 depends on MIPS_MT_SMTC
1564 To support multiple TC microthreads acting as "CPUs" within
1565 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1566 during interrupt handling. To support legacy drivers and interrupt
1567 controller management code, SMTC has a "backstop" to track and
1568 if necessary restore the interrupt mask. This has some performance
1569 impact on interrupt service overhead.
1571 config MIPS_MT_SMTC_IRQAFF
1572 bool "Support IRQ affinity API"
1573 depends on MIPS_MT_SMTC
1576 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1577 for SMTC Linux kernel. Requires platform support, of which
1578 an example can be found in the MIPS kernel i8259 and Malta
1579 platform code. Adds some overhead to interrupt dispatch, and
1580 should be used only if you know what you are doing.
1582 config MIPS_VPE_LOADER_TOM
1583 bool "Load VPE program into memory hidden from linux"
1584 depends on MIPS_VPE_LOADER
1587 The loader can use memory that is present but has been hidden from
1588 Linux using the kernel command line option "mem=xxMB". It's up to
1589 you to ensure the amount you put in the option and the space your
1590 program requires is less or equal to the amount physically present.
1592 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1593 config MIPS_VPE_APSP_API
1594 bool "Enable support for AP/SP API (RTLX)"
1595 depends on MIPS_VPE_LOADER
1598 config MIPS_APSP_KSPD
1600 depends on MIPS_VPE_APSP_API
1603 KSPD is a kernel daemon that accepts syscall requests from the SP
1604 side, actions them and returns the results. It also handles the
1605 "exit" syscall notifying other kernel modules the SP program is
1606 exiting. You probably want to say yes here.
1609 bool "MIPS CMP framework support"
1610 depends on SYS_SUPPORTS_MIPS_CMP
1611 select SYNC_R4K if BROKEN
1612 select SYS_SUPPORTS_SMP
1613 select SYS_SUPPORTS_SCHED_SMT if SMP
1614 select WEAK_ORDERING
1617 This is a placeholder option for the GCMP work. It will need to
1618 be handled differently...
1620 config SB1_PASS_1_WORKAROUNDS
1622 depends on CPU_SB1_PASS_1
1625 config SB1_PASS_2_WORKAROUNDS
1627 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1630 config SB1_PASS_2_1_WORKAROUNDS
1632 depends on CPU_SB1 && CPU_SB1_PASS_2
1635 config 64BIT_PHYS_ADDR
1641 config CPU_HAS_SMARTMIPS
1642 depends on SYS_SUPPORTS_SMARTMIPS
1643 bool "Support for the SmartMIPS ASE"
1645 SmartMIPS is a extension of the MIPS32 architecture aimed at
1646 increased security at both hardware and software level for
1647 smartcards. Enabling this option will allow proper use of the
1648 SmartMIPS instructions by Linux applications. However a kernel with
1649 this option will not work on a MIPS core without SmartMIPS core. If
1650 you don't know you probably don't have SmartMIPS and should say N
1657 # Vectored interrupt mode is an R2 feature
1659 config CPU_MIPSR2_IRQ_VI
1663 # Extended interrupt mode is an R2 feature
1665 config CPU_MIPSR2_IRQ_EI
1670 depends on !CPU_R3000
1673 config GENERIC_CLOCKEVENTS_BROADCAST
1679 config CPU_DADDI_WORKAROUNDS
1682 config CPU_R4000_WORKAROUNDS
1684 select CPU_R4400_WORKAROUNDS
1686 config CPU_R4400_WORKAROUNDS
1690 # Use the generic interrupt handling code in kernel/irq/:
1692 config GENERIC_HARDIRQS
1696 config GENERIC_IRQ_PROBE
1704 # - Highmem only makes sense for the 32-bit kernel.
1705 # - The current highmem code will only work properly on physically indexed
1706 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1707 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1708 # moment we protect the user and offer the highmem option only on machines
1709 # where it's known to be safe. This will not offer highmem on a few systems
1710 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1711 # indexed CPUs but we're playing safe.
1712 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1713 # know they might have memory configurations that could make use of highmem
1717 bool "High Memory Support"
1718 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1720 config CPU_SUPPORTS_HIGHMEM
1723 config SYS_SUPPORTS_HIGHMEM
1726 config SYS_SUPPORTS_SMARTMIPS
1729 config ARCH_FLATMEM_ENABLE
1733 config ARCH_DISCONTIGMEM_ENABLE
1735 default y if SGI_IP27
1737 Say Y to support efficient handling of discontiguous physical memory,
1738 for architectures which are either NUMA (Non-Uniform Memory Access)
1739 or have huge holes in the physical address space for other reasons.
1740 See <file:Documentation/vm/numa> for more.
1742 config ARCH_POPULATES_NODE_MAP
1745 config ARCH_SPARSEMEM_ENABLE
1747 select SPARSEMEM_STATIC
1751 depends on SYS_SUPPORTS_NUMA
1753 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1754 Access). This option improves performance on systems with more
1755 than two nodes; on two node systems it is generally better to
1756 leave it disabled; on single node systems disable this option
1759 config SYS_SUPPORTS_NUMA
1765 depends on NEED_MULTIPLE_NODES
1770 bool "Multi-Processing support"
1771 depends on SYS_SUPPORTS_SMP
1773 select USE_GENERIC_SMP_HELPERS
1775 This enables support for systems with more than one CPU. If you have
1776 a system with only one CPU, like most personal computers, say N. If
1777 you have a system with more than one CPU, say Y.
1779 If you say N here, the kernel will run on single and multiprocessor
1780 machines, but will use only one CPU of a multiprocessor machine. If
1781 you say Y here, the kernel will run on many, but not all,
1782 singleprocessor machines. On a singleprocessor machine, the kernel
1783 will run faster if you say N here.
1785 People using multiprocessor machines who say Y here should also say
1786 Y to "Enhanced Real Time Clock Support", below.
1788 See also the SMP-HOWTO available at
1789 <http://www.tldp.org/docs.html#howto>.
1791 If you don't know what to do here, say N.
1796 config SYS_SUPPORTS_MIPS_CMP
1799 config SYS_SUPPORTS_SMP
1802 config NR_CPUS_DEFAULT_1
1805 config NR_CPUS_DEFAULT_2
1808 config NR_CPUS_DEFAULT_4
1811 config NR_CPUS_DEFAULT_8
1814 config NR_CPUS_DEFAULT_16
1817 config NR_CPUS_DEFAULT_32
1820 config NR_CPUS_DEFAULT_64
1824 int "Maximum number of CPUs (2-64)"
1825 range 1 64 if NR_CPUS_DEFAULT_1
1827 default "1" if NR_CPUS_DEFAULT_1
1828 default "2" if NR_CPUS_DEFAULT_2
1829 default "4" if NR_CPUS_DEFAULT_4
1830 default "8" if NR_CPUS_DEFAULT_8
1831 default "16" if NR_CPUS_DEFAULT_16
1832 default "32" if NR_CPUS_DEFAULT_32
1833 default "64" if NR_CPUS_DEFAULT_64
1835 This allows you to specify the maximum number of CPUs which this
1836 kernel will support. The maximum supported value is 32 for 32-bit
1837 kernel and 64 for 64-bit kernels; the minimum value which makes
1838 sense is 1 for Qemu (useful only for kernel debugging purposes)
1839 and 2 for all others.
1841 This is purely to save memory - each supported CPU adds
1842 approximately eight kilobytes to the kernel image. For best
1843 performance should round up your number of processors to the next
1846 source "kernel/time/Kconfig"
1849 # Timer Interrupt Frequency Configuration
1853 prompt "Timer frequency"
1856 Allows the configuration of the timer frequency.
1859 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1862 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1865 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1868 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1871 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1874 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1877 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1881 config SYS_SUPPORTS_48HZ
1884 config SYS_SUPPORTS_100HZ
1887 config SYS_SUPPORTS_128HZ
1890 config SYS_SUPPORTS_250HZ
1893 config SYS_SUPPORTS_256HZ
1896 config SYS_SUPPORTS_1000HZ
1899 config SYS_SUPPORTS_1024HZ
1902 config SYS_SUPPORTS_ARBIT_HZ
1904 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1905 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1906 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1907 !SYS_SUPPORTS_1024HZ
1912 default 100 if HZ_100
1913 default 128 if HZ_128
1914 default 250 if HZ_250
1915 default 256 if HZ_256
1916 default 1000 if HZ_1000
1917 default 1024 if HZ_1024
1919 source "kernel/Kconfig.preempt"
1921 config MIPS_INSANE_LARGE
1922 bool "Support for large 64-bit configurations"
1923 depends on CPU_R10000 && 64BIT
1925 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1926 previous 64-bit processors which only supported 40 bit / 1TB. If you
1927 need processes of more than 1TB virtual address space, say Y here.
1928 This will result in additional memory usage, so it is not
1929 recommended for normal users.
1932 bool "Kexec system call (EXPERIMENTAL)"
1933 depends on EXPERIMENTAL
1935 kexec is a system call that implements the ability to shutdown your
1936 current kernel, and to start another kernel. It is like a reboot
1937 but it is independent of the system firmware. And like a reboot
1938 you can start any kernel with it, not just Linux.
1940 The name comes from the similarity to the exec system call.
1942 It is an ongoing process to be certain the hardware in a machine
1943 is properly shutdown, so do not be surprised if this code does not
1944 initially work for you. It may help to enable device hotplugging
1945 support. As of this writing the exact hardware interface is
1946 strongly in flux, so no good recommendation can be made.
1949 bool "Enable seccomp to safely compute untrusted bytecode"
1953 This kernel feature is useful for number crunching applications
1954 that may need to compute untrusted bytecode during their
1955 execution. By using pipes or other transports made available to
1956 the process as file descriptors supporting the read/write
1957 syscalls, it's possible to isolate those applications in
1958 their own address space using seccomp. Once seccomp is
1959 enabled via /proc/<pid>/seccomp, it cannot be disabled
1960 and the task is only allowed to execute a few safe syscalls
1961 defined by each seccomp mode.
1963 If unsure, say Y. Only embedded should say N here.
1967 config LOCKDEP_SUPPORT
1971 config STACKTRACE_SUPPORT
1975 source "init/Kconfig"
1977 config PROBE_INITRD_HEADER
1978 bool "Probe initrd header created by addinitrd"
1979 depends on BLK_DEV_INITRD
1981 Probe initrd header at the last page of kernel image.
1982 Say Y here if you are using arch/mips/boot/addinitrd.c to
1983 add initrd or initramfs image to the kernel image.
1986 source "kernel/Kconfig.freezer"
1988 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1996 bool "Support for PCI controller"
1997 depends on HW_HAS_PCI
2000 Find out whether you have a PCI motherboard. PCI is the name of a
2001 bus system, i.e. the way the CPU talks to the other stuff inside
2002 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2008 source "drivers/pci/Kconfig"
2011 # ISA support is now enabled via select. Too many systems still have the one
2012 # or other ISA chip on the board that users don't know about so don't expect
2013 # users to choose the right thing ...
2020 depends on HW_HAS_EISA
2022 select GENERIC_ISA_DMA
2024 The Extended Industry Standard Architecture (EISA) bus was
2025 developed as an open alternative to the IBM MicroChannel bus.
2027 The EISA bus provided some of the features of the IBM MicroChannel
2028 bus while maintaining backward compatibility with cards made for
2029 the older ISA bus. The EISA bus saw limited use between 1988 and
2030 1995 when it was made obsolete by the PCI bus.
2032 Say Y here if you are building a kernel for an EISA-based machine.
2036 source "drivers/eisa/Kconfig"
2039 bool "TURBOchannel support"
2040 depends on MACH_DECSTATION
2042 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2043 processors. Documentation on writing device drivers for TurboChannel
2045 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2048 # bool "Access.Bus support"
2061 source "drivers/pcmcia/Kconfig"
2063 source "drivers/pci/hotplug/Kconfig"
2067 menu "Executable file formats"
2069 source "fs/Kconfig.binfmt"
2074 config MIPS32_COMPAT
2075 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2078 Select this option if you want Linux/MIPS 32-bit binary
2079 compatibility. Since all software available for Linux/MIPS is
2080 currently 32-bit you should say Y here.
2084 depends on MIPS32_COMPAT
2087 config SYSVIPC_COMPAT
2089 depends on COMPAT && SYSVIPC
2093 bool "Kernel support for o32 binaries"
2094 depends on MIPS32_COMPAT
2096 Select this option if you want to run o32 binaries. These are pure
2097 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2098 existing binaries are in this format.
2103 bool "Kernel support for n32 binaries"
2104 depends on MIPS32_COMPAT
2106 Select this option if you want to run n32 binaries. These are
2107 64-bit binaries using 32-bit quantities for addressing and certain
2108 data that would normally be 64-bit. They are used in special
2115 default y if MIPS32_O32 || MIPS32_N32
2119 menu "Power management options"
2121 config ARCH_HIBERNATION_POSSIBLE
2124 config ARCH_SUSPEND_POSSIBLE
2128 source "kernel/power/Kconfig"
2132 menu "CPU Frequency scaling"
2134 source "drivers/cpufreq/Kconfig"
2136 config LS2F_CPU_FREQ
2137 tristate "Loongson-2F CPU Frequency driver"
2138 depends on CPU_LOONGSON2F && CPU_FREQ
2139 select CPU_FREQ_TABLE
2141 This adds the cpufreq driver for Loongson-2F.
2143 For details, take a look at <file:Documentation/cpu-freq>.
2149 source "net/Kconfig"
2151 source "drivers/Kconfig"
2155 source "arch/mips/Kconfig.debug"
2157 source "security/Kconfig"
2159 source "crypto/Kconfig"
2161 source "lib/Kconfig"