4 select HAVE_GENERIC_DMA_COHERENT
8 # Horrible source of confusion. Die, die, die ...
10 select RTC_LIB if !LEMOTE_FULOONG2E
12 mainmenu "Linux/MIPS Kernel Configuration"
14 menu "Machine selection"
24 bool "Alchemy processor based machines"
27 bool "Texas Instruments AR7"
29 select DMA_NONCOHERENT
35 select SYS_HAS_CPU_MIPS32_R1
36 select SYS_HAS_EARLY_PRINTK
37 select SYS_SUPPORTS_32BIT_KERNEL
38 select SYS_SUPPORTS_LITTLE_ENDIAN
43 Support for the Texas Instruments AR7 System-on-a-Chip
44 family: TNETD7100, 7200 and 7300.
47 bool "Basler eXcite smart camera"
56 select SYS_HAS_CPU_RM9000
57 select SYS_SUPPORTS_32BIT_KERNEL
58 select SYS_SUPPORTS_BIG_ENDIAN
60 The eXcite is a smart camera platform manufactured by
61 Basler Vision Technologies AG.
64 bool "BCM47XX based boards"
67 select DMA_NONCOHERENT
70 select SYS_HAS_CPU_MIPS32_R1
71 select SYS_SUPPORTS_32BIT_KERNEL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
74 select SSB_DRIVER_MIPS
75 select SSB_DRIVER_EXTIF
77 select SSB_PCICORE_HOSTMODE if PCI
79 select SYS_HAS_EARLY_PRINTK
82 Support for BCM47XX based boards
85 bool "Broadcom BCM63XX based boards"
88 select DMA_NONCOHERENT
90 select SYS_HAS_CPU_MIPS32_R1
91 select SYS_SUPPORTS_32BIT_KERNEL
92 select SYS_SUPPORTS_BIG_ENDIAN
93 select SYS_HAS_EARLY_PRINTK
95 select ARCH_REQUIRE_GPIOLIB
97 Support for BCM63XX based boards
104 select DMA_NONCOHERENT
110 select PCI_GT64XXX_PCI0
112 select SYS_HAS_CPU_NEVADA
113 select SYS_HAS_EARLY_PRINTK
114 select SYS_SUPPORTS_32BIT_KERNEL
115 select SYS_SUPPORTS_64BIT_KERNEL
116 select SYS_SUPPORTS_LITTLE_ENDIAN
118 config MACH_DECSTATION
125 select CPU_DADDI_WORKAROUNDS if 64BIT
126 select CPU_R4000_WORKAROUNDS if 64BIT
127 select CPU_R4400_WORKAROUNDS if 64BIT
128 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_R3000
132 select SYS_HAS_CPU_R4X00
133 select SYS_SUPPORTS_32BIT_KERNEL
134 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
135 select SYS_SUPPORTS_LITTLE_ENDIAN
136 select SYS_SUPPORTS_128HZ
137 select SYS_SUPPORTS_256HZ
138 select SYS_SUPPORTS_1024HZ
140 This enables support for DEC's MIPS based workstations. For details
141 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
142 DECstation porting pages on <http://decstation.unix-ag.org/>.
144 If you have one of the following DECstation Models you definitely
145 want to choose R4xx0 for the CPU Type:
152 otherwise choose R3000.
155 bool "Jazz family of machines"
158 select ARCH_MAY_HAVE_PC_FDC
161 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
162 select GENERIC_ISA_DMA
167 select SYS_HAS_CPU_R4X00
168 select SYS_SUPPORTS_32BIT_KERNEL
169 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
170 select SYS_SUPPORTS_100HZ
172 This a family of machines based on the MIPS R4030 chipset which was
173 used by several vendors to build RISC/os and Windows NT workstations.
174 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
175 Olivetti M700-10 workstations.
178 bool "LASAT Networks platforms"
181 select DMA_NONCOHERENT
182 select SYS_HAS_EARLY_PRINTK
185 select PCI_GT64XXX_PCI0
187 select R5000_CPU_SCACHE
188 select SYS_HAS_CPU_R5000
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
191 select SYS_SUPPORTS_LITTLE_ENDIAN
194 bool "Loongson family of machines"
196 This enables the support of Loongson family of machines.
198 Loongson is a family of general-purpose MIPS-compatible CPUs.
199 developed at Institute of Computing Technology (ICT),
200 Chinese Academy of Sciences (CAS) in the People's Republic
201 of China. The chief architect is Professor Weiwu Hu.
204 bool "MIPS Malta board"
205 select ARCH_MAY_HAVE_PC_FDC
210 select DMA_NONCOHERENT
211 select GENERIC_ISA_DMA
217 select MIPS_BOARDS_GEN
219 select MIPS_CPU_SCACHE
220 select PCI_GT64XXX_PCI0
223 select SYS_HAS_CPU_MIPS32_R1
224 select SYS_HAS_CPU_MIPS32_R2
225 select SYS_HAS_CPU_MIPS64_R1
226 select SYS_HAS_CPU_NEVADA
227 select SYS_HAS_CPU_RM7000
228 select SYS_HAS_EARLY_PRINTK
229 select SYS_SUPPORTS_32BIT_KERNEL
230 select SYS_SUPPORTS_64BIT_KERNEL
231 select SYS_SUPPORTS_BIG_ENDIAN
232 select SYS_SUPPORTS_LITTLE_ENDIAN
233 select SYS_SUPPORTS_MIPS_CMP
234 select SYS_SUPPORTS_MULTITHREADING
235 select SYS_SUPPORTS_SMARTMIPS
237 This enables support for the MIPS Technologies Malta evaluation
241 bool 'MIPS simulator (MIPSsim)'
244 select DMA_NONCOHERENT
245 select SYS_HAS_EARLY_PRINTK
248 select SYS_HAS_CPU_MIPS32_R1
249 select SYS_HAS_CPU_MIPS32_R2
250 select SYS_HAS_EARLY_PRINTK
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_BIG_ENDIAN
253 select SYS_SUPPORTS_MULTITHREADING
254 select SYS_SUPPORTS_LITTLE_ENDIAN
256 This option enables support for MIPS Technologies MIPSsim software
260 bool "NEC EMMA2RH Mark-eins board"
264 This enables support for the NEC Electronics Mark-eins boards.
267 bool "NEC VR4100 series based machines"
270 select SYS_HAS_CPU_VR41XX
271 select ARCH_REQUIRE_GPIOLIB
274 bool "NXP STB220 board"
277 Support for NXP Semiconductors STB220 Development Board.
284 Support for NXP Semiconductors STB225 Development Board.
287 bool "NXP PNX8550 based JBS board"
289 select SYS_SUPPORTS_LITTLE_ENDIAN
291 config PNX8550_STB810
292 bool "NXP PNX8550 based STB810 board"
294 select SYS_SUPPORTS_LITTLE_ENDIAN
297 bool "PMC-Sierra MSP chipsets"
298 depends on EXPERIMENTAL
299 select DMA_NONCOHERENT
301 select NO_EXCEPT_FILL
303 select SYS_HAS_CPU_MIPS32_R1
304 select SYS_HAS_CPU_MIPS32_R2
305 select SYS_SUPPORTS_32BIT_KERNEL
306 select SYS_SUPPORTS_BIG_ENDIAN
309 select SERIAL_8250_CONSOLE
311 This adds support for the PMC-Sierra family of Multi-Service
312 Processor System-On-A-Chips. These parts include a number
313 of integrated peripherals, interfaces and DSPs in addition to
314 a variety of MIPS cores.
317 bool "PMC-Sierra Yosemite eval board"
326 select SYS_HAS_CPU_RM9000
327 select SYS_HAS_EARLY_PRINTK
328 select SYS_SUPPORTS_32BIT_KERNEL
329 select SYS_SUPPORTS_64BIT_KERNEL
330 select SYS_SUPPORTS_BIG_ENDIAN
331 select SYS_SUPPORTS_HIGHMEM
332 select SYS_SUPPORTS_SMP
334 Yosemite is an evaluation board for the RM9000x2 processor
335 manufactured by PMC-Sierra.
338 bool "SGI IP22 (Indy/Indigo2)"
344 select DEFAULT_SGI_PARTITION
345 select DMA_NONCOHERENT
349 select IP22_CPU_SCACHE
351 select GENERIC_ISA_DMA_SUPPORT_BROKEN
353 select SGI_HAS_INDYDOG
359 select SYS_HAS_CPU_R4X00
360 select SYS_HAS_CPU_R5000
361 select SYS_HAS_EARLY_PRINTK
362 select SYS_SUPPORTS_32BIT_KERNEL
363 select SYS_SUPPORTS_64BIT_KERNEL
364 select SYS_SUPPORTS_BIG_ENDIAN
366 This are the SGI Indy, Challenge S and Indigo2, as well as certain
367 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
368 that runs on these, say Y here.
371 bool "SGI IP27 (Origin200/2000)"
375 select DEFAULT_SGI_PARTITION
377 select SYS_HAS_EARLY_PRINTK
379 select NR_CPUS_DEFAULT_64
380 select SYS_HAS_CPU_R10000
381 select SYS_SUPPORTS_64BIT_KERNEL
382 select SYS_SUPPORTS_BIG_ENDIAN
383 select SYS_SUPPORTS_NUMA
384 select SYS_SUPPORTS_SMP
386 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
387 workstations. To compile a Linux kernel that runs on these, say Y
391 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
392 depends on EXPERIMENTAL
398 select DEFAULT_SGI_PARTITION
399 select DMA_NONCOHERENT
400 select GENERIC_ISA_DMA_SUPPORT_BROKEN
406 select SGI_HAS_INDYDOG
412 select SYS_HAS_CPU_R10000
413 select SYS_HAS_EARLY_PRINTK
414 select SYS_SUPPORTS_64BIT_KERNEL
415 select SYS_SUPPORTS_BIG_ENDIAN
417 This is the SGI Indigo2 with R10000 processor. To compile a Linux
418 kernel that runs on these, say Y here.
427 select DMA_NONCOHERENT
430 select R5000_CPU_SCACHE
431 select RM7000_CPU_SCACHE
432 select SYS_HAS_CPU_R5000
433 select SYS_HAS_CPU_R10000 if BROKEN
434 select SYS_HAS_CPU_RM7000
435 select SYS_HAS_CPU_NEVADA
436 select SYS_SUPPORTS_64BIT_KERNEL
437 select SYS_SUPPORTS_BIG_ENDIAN
439 If you want this kernel to run on SGI O2 workstation, say Y here.
442 bool "Sibyte BCM91120C-CRhine"
443 depends on EXPERIMENTAL
446 select SIBYTE_BCM1120
448 select SYS_HAS_CPU_SB1
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_LITTLE_ENDIAN
453 bool "Sibyte BCM91120x-Carmel"
454 depends on EXPERIMENTAL
457 select SIBYTE_BCM1120
459 select SYS_HAS_CPU_SB1
460 select SYS_SUPPORTS_BIG_ENDIAN
461 select SYS_SUPPORTS_LITTLE_ENDIAN
464 bool "Sibyte BCM91125C-CRhone"
465 depends on EXPERIMENTAL
468 select SIBYTE_BCM1125
470 select SYS_HAS_CPU_SB1
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_HIGHMEM
473 select SYS_SUPPORTS_LITTLE_ENDIAN
476 bool "Sibyte BCM91125E-Rhone"
477 depends on EXPERIMENTAL
480 select SIBYTE_BCM1125H
482 select SYS_HAS_CPU_SB1
483 select SYS_SUPPORTS_BIG_ENDIAN
484 select SYS_SUPPORTS_LITTLE_ENDIAN
487 bool "Sibyte BCM91250A-SWARM"
490 select NR_CPUS_DEFAULT_2
493 select SYS_HAS_CPU_SB1
494 select SYS_SUPPORTS_BIG_ENDIAN
495 select SYS_SUPPORTS_HIGHMEM
496 select SYS_SUPPORTS_LITTLE_ENDIAN
497 select ZONE_DMA32 if 64BIT
499 config SIBYTE_LITTLESUR
500 bool "Sibyte BCM91250C2-LittleSur"
501 depends on EXPERIMENTAL
504 select NR_CPUS_DEFAULT_2
507 select SYS_HAS_CPU_SB1
508 select SYS_SUPPORTS_BIG_ENDIAN
509 select SYS_SUPPORTS_HIGHMEM
510 select SYS_SUPPORTS_LITTLE_ENDIAN
512 config SIBYTE_SENTOSA
513 bool "Sibyte BCM91250E-Sentosa"
514 depends on EXPERIMENTAL
517 select NR_CPUS_DEFAULT_2
520 select SYS_HAS_CPU_SB1
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_LITTLE_ENDIAN
525 bool "Sibyte BCM91480B-BigSur"
528 select NR_CPUS_DEFAULT_4
529 select SIBYTE_BCM1x80
531 select SYS_HAS_CPU_SB1
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select ZONE_DMA32 if 64BIT
538 bool "SNI RM200/300/400"
539 select ARC if CPU_LITTLE_ENDIAN
540 select ARC32 if CPU_LITTLE_ENDIAN
541 select SNIPROM if CPU_BIG_ENDIAN
542 select ARCH_MAY_HAVE_PC_FDC
546 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
547 select DMA_NONCOHERENT
548 select GENERIC_ISA_DMA
555 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
556 select SYS_HAS_CPU_R4X00
557 select SYS_HAS_CPU_R5000
558 select SYS_HAS_CPU_R10000
559 select R5000_CPU_SCACHE
560 select SYS_HAS_EARLY_PRINTK
561 select SYS_SUPPORTS_32BIT_KERNEL
562 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
563 select SYS_SUPPORTS_BIG_ENDIAN
564 select SYS_SUPPORTS_HIGHMEM
565 select SYS_SUPPORTS_LITTLE_ENDIAN
567 The SNI RM200/300/400 are MIPS-based machines manufactured by
568 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
569 Technology and now in turn merged with Fujitsu. Say Y here to
570 support this machine type.
573 bool "Toshiba TX39 series based machines"
576 bool "Toshiba TX49 series based machines"
578 config MIKROTIK_RB532
579 bool "Mikrotik RB532 boards"
582 select DMA_NONCOHERENT
585 select SYS_HAS_CPU_MIPS32_R1
586 select SYS_SUPPORTS_32BIT_KERNEL
587 select SYS_SUPPORTS_LITTLE_ENDIAN
590 select ARCH_REQUIRE_GPIOLIB
592 Support the Mikrotik(tm) RouterBoard 532 series,
593 based on the IDT RC32434 SoC.
596 bool "Wind River PPMC board"
601 select DMA_NONCOHERENT
603 select PCI_GT64XXX_PCI0
605 select SYS_HAS_CPU_MIPS32_R1
606 select SYS_HAS_CPU_MIPS32_R2
607 select SYS_HAS_CPU_MIPS64_R1
608 select SYS_HAS_CPU_NEVADA
609 select SYS_HAS_CPU_RM7000
610 select SYS_SUPPORTS_32BIT_KERNEL
611 select SYS_SUPPORTS_64BIT_KERNEL
612 select SYS_SUPPORTS_BIG_ENDIAN
613 select SYS_SUPPORTS_LITTLE_ENDIAN
615 This enables support for the Wind River MIPS32 4KC PPMC evaluation
616 board, which is based on GT64120 bridge chip.
618 config CAVIUM_OCTEON_SIMULATOR
619 bool "Cavium Networks Octeon Simulator"
621 select 64BIT_PHYS_ADDR
623 select SYS_SUPPORTS_64BIT_KERNEL
624 select SYS_SUPPORTS_BIG_ENDIAN
625 select SYS_SUPPORTS_HIGHMEM
626 select SYS_SUPPORTS_HOTPLUG_CPU
627 select SYS_HAS_CPU_CAVIUM_OCTEON
629 The Octeon simulator is software performance model of the Cavium
630 Octeon Processor. It supports simulating Octeon processors on x86
633 config CAVIUM_OCTEON_REFERENCE_BOARD
634 bool "Cavium Networks Octeon reference board"
636 select 64BIT_PHYS_ADDR
638 select SYS_SUPPORTS_64BIT_KERNEL
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select SYS_SUPPORTS_HIGHMEM
641 select SYS_SUPPORTS_HOTPLUG_CPU
642 select SYS_HAS_EARLY_PRINTK
643 select SYS_HAS_CPU_CAVIUM_OCTEON
646 select ARCH_SUPPORTS_MSI
648 This option supports all of the Octeon reference boards from Cavium
649 Networks. It builds a kernel that dynamically determines the Octeon
650 CPU type and supports all known board reference implementations.
651 Some of the supported boards are:
658 Say Y here for most Octeon reference boards.
662 source "arch/mips/alchemy/Kconfig"
663 source "arch/mips/basler/excite/Kconfig"
664 source "arch/mips/bcm63xx/Kconfig"
665 source "arch/mips/jazz/Kconfig"
666 source "arch/mips/lasat/Kconfig"
667 source "arch/mips/pmc-sierra/Kconfig"
668 source "arch/mips/sgi-ip27/Kconfig"
669 source "arch/mips/sibyte/Kconfig"
670 source "arch/mips/txx9/Kconfig"
671 source "arch/mips/vr41xx/Kconfig"
672 source "arch/mips/cavium-octeon/Kconfig"
673 source "arch/mips/loongson/Kconfig"
677 config RWSEM_GENERIC_SPINLOCK
681 config RWSEM_XCHGADD_ALGORITHM
684 config ARCH_HAS_ILOG2_U32
688 config ARCH_HAS_ILOG2_U64
692 config ARCH_SUPPORTS_OPROFILE
694 default y if !MIPS_MT_SMTC
696 config GENERIC_FIND_NEXT_BIT
700 config GENERIC_HWEIGHT
704 config GENERIC_CALIBRATE_DELAY
708 config GENERIC_CLOCKEVENTS
716 config GENERIC_CMOS_UPDATE
720 config SCHED_OMIT_FRAME_POINTER
724 config GENERIC_HARDIRQS_NO__DO_IRQ
728 # Select some configuration options automatically based on user selections.
733 config ARCH_MAY_HAVE_PC_FDC
779 select ARCH_REQUIRE_GPIOLIB
788 config DMA_NONCOHERENT
790 select DMA_NEED_PCI_MAP_STATE
792 config DMA_NEED_PCI_MAP_STATE
796 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
797 depends on SYS_HAS_EARLY_PRINTK
800 This option enables special console drivers which allow the kernel
801 to print messages very early in the bootup process.
803 This is useful for kernel debugging when your machine crashes very
804 early before the console code is initialized. For normal operation,
805 it is not recommended because it looks ugly on some machines and
806 doesn't cooperate with an X server. You should normally say N here,
807 unless you want to debug such a crash.
809 config SYS_HAS_EARLY_PRINTK
813 bool "Support for hot-pluggable CPUs"
814 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
816 Say Y here to allow turning CPUs off and on. CPUs can be
817 controlled through /sys/devices/system/cpu.
818 (Note: power management support will enable this option
819 automatically on SMP systems. )
820 Say N if you want to disable CPU hotplug.
822 config SYS_SUPPORTS_HOTPLUG_CPU
837 config MIPS_DISABLE_OBSOLETE_IDE
846 config GENERIC_ISA_DMA
848 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
850 config GENERIC_ISA_DMA_SUPPORT_BROKEN
852 select GENERIC_ISA_DMA
858 # Endianess selection. Sufficiently obscure so many users don't know what to
859 # answer,so we try hard to limit the available choices. Also the use of a
860 # choice statement should be more obvious to the user.
863 prompt "Endianess selection"
865 Some MIPS machines can be configured for either little or big endian
866 byte order. These modes require different kernels and a different
867 Linux distribution. In general there is one preferred byteorder for a
868 particular system but some systems are just as commonly used in the
869 one or the other endianness.
871 config CPU_BIG_ENDIAN
873 depends on SYS_SUPPORTS_BIG_ENDIAN
875 config CPU_LITTLE_ENDIAN
877 depends on SYS_SUPPORTS_LITTLE_ENDIAN
882 config SYS_SUPPORTS_APM_EMULATION
885 config SYS_SUPPORTS_BIG_ENDIAN
888 config SYS_SUPPORTS_LITTLE_ENDIAN
891 config SYS_SUPPORTS_HUGETLBFS
893 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
920 config IRQ_CPU_OCTEON
923 config MIPS_BOARDS_GEN
926 config PCI_GT64XXX_PCI0
929 config NO_EXCEPT_FILL
940 select DMA_NONCOHERENT
943 select SYS_HAS_CPU_R5500
944 select SYS_SUPPORTS_32BIT_KERNEL
945 select SYS_SUPPORTS_64BIT_KERNEL
946 select SYS_SUPPORTS_BIG_ENDIAN
953 select DMA_NONCOHERENT
954 select SYS_HAS_CPU_MIPS32_R2
955 select SYS_SUPPORTS_32BIT_KERNEL
956 select SYS_SUPPORTS_LITTLE_ENDIAN
957 select SYS_SUPPORTS_BIG_ENDIAN
959 select CPU_MIPSR2_IRQ_VI
971 select DMA_NONCOHERENT
973 select SYS_HAS_CPU_MIPS32_R1
974 select SYS_HAS_EARLY_PRINTK
975 select SYS_SUPPORTS_32BIT_KERNEL
984 config SGI_HAS_INDYDOG
1002 config DEFAULT_SGI_PARTITION
1014 config MIPS_L1_CACHE_SHIFT
1016 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1017 default "6" if MIPS_CPU_SCACHE
1018 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1021 config HAVE_STD_PC_SERIAL_PORT
1025 bool "ARC console support"
1026 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1030 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1035 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1044 menu "CPU selection"
1050 config CPU_LOONGSON2E
1052 depends on SYS_HAS_CPU_LOONGSON2E
1053 select CPU_LOONGSON2
1055 The Loongson 2E processor implements the MIPS III instruction set
1056 with many extensions.
1058 config CPU_MIPS32_R1
1059 bool "MIPS32 Release 1"
1060 depends on SYS_HAS_CPU_MIPS32_R1
1061 select CPU_HAS_PREFETCH
1062 select CPU_SUPPORTS_32BIT_KERNEL
1063 select CPU_SUPPORTS_HIGHMEM
1065 Choose this option to build a kernel for release 1 or later of the
1066 MIPS32 architecture. Most modern embedded systems with a 32-bit
1067 MIPS processor are based on a MIPS32 processor. If you know the
1068 specific type of processor in your system, choose those that one
1069 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1070 Release 2 of the MIPS32 architecture is available since several
1071 years so chances are you even have a MIPS32 Release 2 processor
1072 in which case you should choose CPU_MIPS32_R2 instead for better
1075 config CPU_MIPS32_R2
1076 bool "MIPS32 Release 2"
1077 depends on SYS_HAS_CPU_MIPS32_R2
1078 select CPU_HAS_PREFETCH
1079 select CPU_SUPPORTS_32BIT_KERNEL
1080 select CPU_SUPPORTS_HIGHMEM
1082 Choose this option to build a kernel for release 2 or later of the
1083 MIPS32 architecture. Most modern embedded systems with a 32-bit
1084 MIPS processor are based on a MIPS32 processor. If you know the
1085 specific type of processor in your system, choose those that one
1086 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1088 config CPU_MIPS64_R1
1089 bool "MIPS64 Release 1"
1090 depends on SYS_HAS_CPU_MIPS64_R1
1091 select CPU_HAS_PREFETCH
1092 select CPU_SUPPORTS_32BIT_KERNEL
1093 select CPU_SUPPORTS_64BIT_KERNEL
1094 select CPU_SUPPORTS_HIGHMEM
1095 select CPU_SUPPORTS_HUGEPAGES
1097 Choose this option to build a kernel for release 1 or later of the
1098 MIPS64 architecture. Many modern embedded systems with a 64-bit
1099 MIPS processor are based on a MIPS64 processor. If you know the
1100 specific type of processor in your system, choose those that one
1101 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1102 Release 2 of the MIPS64 architecture is available since several
1103 years so chances are you even have a MIPS64 Release 2 processor
1104 in which case you should choose CPU_MIPS64_R2 instead for better
1107 config CPU_MIPS64_R2
1108 bool "MIPS64 Release 2"
1109 depends on SYS_HAS_CPU_MIPS64_R2
1110 select CPU_HAS_PREFETCH
1111 select CPU_SUPPORTS_32BIT_KERNEL
1112 select CPU_SUPPORTS_64BIT_KERNEL
1113 select CPU_SUPPORTS_HIGHMEM
1114 select CPU_SUPPORTS_HUGEPAGES
1116 Choose this option to build a kernel for release 2 or later of the
1117 MIPS64 architecture. Many modern embedded systems with a 64-bit
1118 MIPS processor are based on a MIPS64 processor. If you know the
1119 specific type of processor in your system, choose those that one
1120 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1124 depends on SYS_HAS_CPU_R3000
1126 select CPU_SUPPORTS_32BIT_KERNEL
1127 select CPU_SUPPORTS_HIGHMEM
1129 Please make sure to pick the right CPU type. Linux/MIPS is not
1130 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1131 *not* work on R4000 machines and vice versa. However, since most
1132 of the supported machines have an R4000 (or similar) CPU, R4x00
1133 might be a safe bet. If the resulting kernel does not work,
1134 try to recompile with R3000.
1138 depends on SYS_HAS_CPU_TX39XX
1139 select CPU_SUPPORTS_32BIT_KERNEL
1143 depends on SYS_HAS_CPU_VR41XX
1144 select CPU_SUPPORTS_32BIT_KERNEL
1145 select CPU_SUPPORTS_64BIT_KERNEL
1147 The options selects support for the NEC VR4100 series of processors.
1148 Only choose this option if you have one of these processors as a
1149 kernel built with this option will not run on any other type of
1150 processor or vice versa.
1154 depends on SYS_HAS_CPU_R4300
1155 select CPU_SUPPORTS_32BIT_KERNEL
1156 select CPU_SUPPORTS_64BIT_KERNEL
1158 MIPS Technologies R4300-series processors.
1162 depends on SYS_HAS_CPU_R4X00
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1166 MIPS Technologies R4000-series processors other than 4300, including
1167 the R4000, R4400, R4600, and 4700.
1171 depends on SYS_HAS_CPU_TX49XX
1172 select CPU_HAS_PREFETCH
1173 select CPU_SUPPORTS_32BIT_KERNEL
1174 select CPU_SUPPORTS_64BIT_KERNEL
1178 depends on SYS_HAS_CPU_R5000
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_64BIT_KERNEL
1182 MIPS Technologies R5000-series processors other than the Nevada.
1186 depends on SYS_HAS_CPU_R5432
1187 select CPU_SUPPORTS_32BIT_KERNEL
1188 select CPU_SUPPORTS_64BIT_KERNEL
1192 depends on SYS_HAS_CPU_R5500
1193 select CPU_SUPPORTS_32BIT_KERNEL
1194 select CPU_SUPPORTS_64BIT_KERNEL
1195 select CPU_SUPPORTS_HUGEPAGES
1197 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1202 depends on EXPERIMENTAL
1203 depends on SYS_HAS_CPU_R6000
1204 select CPU_SUPPORTS_32BIT_KERNEL
1206 MIPS Technologies R6000 and R6000A series processors. Note these
1207 processors are extremely rare and the support for them is incomplete.
1211 depends on SYS_HAS_CPU_NEVADA
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1215 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1219 depends on EXPERIMENTAL
1220 depends on SYS_HAS_CPU_R8000
1221 select CPU_HAS_PREFETCH
1222 select CPU_SUPPORTS_64BIT_KERNEL
1224 MIPS Technologies R8000 processors. Note these processors are
1225 uncommon and the support for them is incomplete.
1229 depends on SYS_HAS_CPU_R10000
1230 select CPU_HAS_PREFETCH
1231 select CPU_SUPPORTS_32BIT_KERNEL
1232 select CPU_SUPPORTS_64BIT_KERNEL
1233 select CPU_SUPPORTS_HIGHMEM
1235 MIPS Technologies R10000-series processors.
1239 depends on SYS_HAS_CPU_RM7000
1240 select CPU_HAS_PREFETCH
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1243 select CPU_SUPPORTS_HIGHMEM
1247 depends on SYS_HAS_CPU_RM9000
1248 select CPU_HAS_PREFETCH
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1251 select CPU_SUPPORTS_HIGHMEM
1252 select WEAK_ORDERING
1256 depends on SYS_HAS_CPU_SB1
1257 select CPU_SUPPORTS_32BIT_KERNEL
1258 select CPU_SUPPORTS_64BIT_KERNEL
1259 select CPU_SUPPORTS_HIGHMEM
1260 select WEAK_ORDERING
1262 config CPU_CAVIUM_OCTEON
1263 bool "Cavium Octeon processor"
1264 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1266 select IRQ_CPU_OCTEON
1267 select CPU_HAS_PREFETCH
1268 select CPU_SUPPORTS_64BIT_KERNEL
1269 select SYS_SUPPORTS_SMP
1270 select NR_CPUS_DEFAULT_16
1271 select WEAK_ORDERING
1272 select WEAK_REORDERING_BEYOND_LLSC
1273 select CPU_SUPPORTS_HIGHMEM
1274 select CPU_SUPPORTS_HUGEPAGES
1276 The Cavium Octeon processor is a highly integrated chip containing
1277 many ethernet hardware widgets for networking tasks. The processor
1278 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1279 Full details can be found at http://www.caviumnetworks.com.
1283 config CPU_LOONGSON2
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HIGHMEM
1289 config SYS_HAS_CPU_LOONGSON2E
1292 config SYS_HAS_CPU_MIPS32_R1
1295 config SYS_HAS_CPU_MIPS32_R2
1298 config SYS_HAS_CPU_MIPS64_R1
1301 config SYS_HAS_CPU_MIPS64_R2
1304 config SYS_HAS_CPU_R3000
1307 config SYS_HAS_CPU_TX39XX
1310 config SYS_HAS_CPU_VR41XX
1313 config SYS_HAS_CPU_R4300
1316 config SYS_HAS_CPU_R4X00
1319 config SYS_HAS_CPU_TX49XX
1322 config SYS_HAS_CPU_R5000
1325 config SYS_HAS_CPU_R5432
1328 config SYS_HAS_CPU_R5500
1331 config SYS_HAS_CPU_R6000
1334 config SYS_HAS_CPU_NEVADA
1337 config SYS_HAS_CPU_R8000
1340 config SYS_HAS_CPU_R10000
1343 config SYS_HAS_CPU_RM7000
1346 config SYS_HAS_CPU_RM9000
1349 config SYS_HAS_CPU_SB1
1352 config SYS_HAS_CPU_CAVIUM_OCTEON
1356 # CPU may reorder R->R, R->W, W->R, W->W
1357 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1359 config WEAK_ORDERING
1363 # CPU may reorder reads and writes beyond LL/SC
1364 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1366 config WEAK_REORDERING_BEYOND_LLSC
1371 # These two indicate any level of the MIPS32 and MIPS64 architecture
1375 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1379 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1382 # These two indicate the revision of the architecture, either Release 1 or Release 2
1386 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1390 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1392 config SYS_SUPPORTS_32BIT_KERNEL
1394 config SYS_SUPPORTS_64BIT_KERNEL
1396 config CPU_SUPPORTS_32BIT_KERNEL
1398 config CPU_SUPPORTS_64BIT_KERNEL
1400 config CPU_SUPPORTS_HUGEPAGES
1404 # Set to y for ptrace access to watch registers.
1406 config HARDWARE_WATCHPOINTS
1408 default y if CPU_MIPSR1 || CPU_MIPSR2
1414 prompt "Kernel code model"
1416 You should only select this option if you have a workload that
1417 actually benefits from 64-bit processing or if your machine has
1418 large memory. You will only be presented a single option in this
1419 menu if your system does not support both 32-bit and 64-bit kernels.
1422 bool "32-bit kernel"
1423 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1426 Select this option if you want to build a 32-bit kernel.
1428 bool "64-bit kernel"
1429 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1430 select HAVE_SYSCALL_WRAPPERS
1432 Select this option if you want to build a 64-bit kernel.
1437 prompt "Kernel page size"
1438 default PAGE_SIZE_4KB
1440 config PAGE_SIZE_4KB
1443 This option select the standard 4kB Linux page size. On some
1444 R3000-family processors this is the only available page size. Using
1445 4kB page size will minimize memory consumption and is therefore
1446 recommended for low memory systems.
1448 config PAGE_SIZE_8KB
1450 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1452 Using 8kB page size will result in higher performance kernel at
1453 the price of higher memory consumption. This option is available
1454 only on R8000 and cnMIPS processors. Note that you will need a
1455 suitable Linux distribution to support this.
1457 config PAGE_SIZE_16KB
1459 depends on !CPU_R3000 && !CPU_TX39XX
1461 Using 16kB page size will result in higher performance kernel at
1462 the price of higher memory consumption. This option is available on
1463 all non-R3000 family processors. Note that you will need a suitable
1464 Linux distribution to support this.
1466 config PAGE_SIZE_32KB
1468 depends on CPU_CAVIUM_OCTEON
1470 Using 32kB page size will result in higher performance kernel at
1471 the price of higher memory consumption. This option is available
1472 only on cnMIPS cores. Note that you will need a suitable Linux
1473 distribution to support this.
1475 config PAGE_SIZE_64KB
1477 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1479 Using 64kB page size will result in higher performance kernel at
1480 the price of higher memory consumption. This option is available on
1481 all non-R3000 family processor. Not that at the time of this
1482 writing this option is still high experimental.
1489 config IP22_CPU_SCACHE
1494 # Support for a MIPS32 / MIPS64 style S-caches
1496 config MIPS_CPU_SCACHE
1500 config R5000_CPU_SCACHE
1504 config RM7000_CPU_SCACHE
1508 config SIBYTE_DMA_PAGEOPS
1509 bool "Use DMA to clear/copy pages"
1512 Instead of using the CPU to zero and copy pages, use a Data Mover
1513 channel. These DMA channels are otherwise unused by the standard
1514 SiByte Linux port. Seems to give a small performance benefit.
1516 config CPU_HAS_PREFETCH
1520 prompt "MIPS MT options"
1522 config MIPS_MT_DISABLED
1523 bool "Disable multithreading support."
1525 Use this option if your workload can't take advantage of
1526 MIPS hardware multithreading support. On systems that don't have
1527 the option of an MT-enabled processor this option will be the only
1528 option in this menu.
1531 bool "Use 1 TC on each available VPE for SMP"
1532 depends on SYS_SUPPORTS_MULTITHREADING
1533 select CPU_MIPSR2_IRQ_VI
1534 select CPU_MIPSR2_IRQ_EI
1536 select NR_CPUS_DEFAULT_2
1538 select SYS_SUPPORTS_SCHED_SMT if SMP
1539 select SYS_SUPPORTS_SMP
1542 This is a kernel model which is also known a VSMP or lately
1543 has been marketesed into SMVP.
1546 bool "SMTC: Use all TCs on all VPEs for SMP"
1547 depends on CPU_MIPS32_R2
1548 #depends on CPU_MIPS64_R2 # once there is hardware ...
1549 depends on SYS_SUPPORTS_MULTITHREADING
1550 select CPU_MIPSR2_IRQ_VI
1551 select CPU_MIPSR2_IRQ_EI
1553 select NR_CPUS_DEFAULT_8
1555 select SYS_SUPPORTS_SMP
1558 This is a kernel model which is known a SMTC or lately has been
1559 marketesed into SMVP.
1567 bool "SMT (multithreading) scheduler support"
1568 depends on SYS_SUPPORTS_SCHED_SMT
1571 SMT scheduler support improves the CPU scheduler's decision making
1572 when dealing with MIPS MT enabled cores at a cost of slightly
1573 increased overhead in some places. If unsure say N here.
1575 config SYS_SUPPORTS_SCHED_SMT
1579 config SYS_SUPPORTS_MULTITHREADING
1582 config MIPS_MT_FPAFF
1583 bool "Dynamic FPU affinity for FP-intensive threads"
1585 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1587 config MIPS_VPE_LOADER
1588 bool "VPE loader support."
1589 depends on SYS_SUPPORTS_MULTITHREADING
1590 select CPU_MIPSR2_IRQ_VI
1591 select CPU_MIPSR2_IRQ_EI
1594 Includes a loader for loading an elf relocatable object
1595 onto another VPE and running it.
1597 config MIPS_MT_SMTC_IM_BACKSTOP
1598 bool "Use per-TC register bits as backstop for inhibited IM bits"
1599 depends on MIPS_MT_SMTC
1602 To support multiple TC microthreads acting as "CPUs" within
1603 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1604 during interrupt handling. To support legacy drivers and interrupt
1605 controller management code, SMTC has a "backstop" to track and
1606 if necessary restore the interrupt mask. This has some performance
1607 impact on interrupt service overhead.
1609 config MIPS_MT_SMTC_IRQAFF
1610 bool "Support IRQ affinity API"
1611 depends on MIPS_MT_SMTC
1614 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1615 for SMTC Linux kernel. Requires platform support, of which
1616 an example can be found in the MIPS kernel i8259 and Malta
1617 platform code. Adds some overhead to interrupt dispatch, and
1618 should be used only if you know what you are doing.
1620 config MIPS_VPE_LOADER_TOM
1621 bool "Load VPE program into memory hidden from linux"
1622 depends on MIPS_VPE_LOADER
1625 The loader can use memory that is present but has been hidden from
1626 Linux using the kernel command line option "mem=xxMB". It's up to
1627 you to ensure the amount you put in the option and the space your
1628 program requires is less or equal to the amount physically present.
1630 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1631 config MIPS_VPE_APSP_API
1632 bool "Enable support for AP/SP API (RTLX)"
1633 depends on MIPS_VPE_LOADER
1636 config MIPS_APSP_KSPD
1638 depends on MIPS_VPE_APSP_API
1641 KSPD is a kernel daemon that accepts syscall requests from the SP
1642 side, actions them and returns the results. It also handles the
1643 "exit" syscall notifying other kernel modules the SP program is
1644 exiting. You probably want to say yes here.
1647 bool "MIPS CMP framework support"
1648 depends on SYS_SUPPORTS_MIPS_CMP
1650 select SYS_SUPPORTS_SMP
1651 select SYS_SUPPORTS_SCHED_SMT if SMP
1652 select WEAK_ORDERING
1655 This is a placeholder option for the GCMP work. It will need to
1656 be handled differently...
1658 config SB1_PASS_1_WORKAROUNDS
1660 depends on CPU_SB1_PASS_1
1663 config SB1_PASS_2_WORKAROUNDS
1665 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1668 config SB1_PASS_2_1_WORKAROUNDS
1670 depends on CPU_SB1 && CPU_SB1_PASS_2
1673 config 64BIT_PHYS_ADDR
1676 config CPU_HAS_SMARTMIPS
1677 depends on SYS_SUPPORTS_SMARTMIPS
1678 bool "Support for the SmartMIPS ASE"
1680 SmartMIPS is a extension of the MIPS32 architecture aimed at
1681 increased security at both hardware and software level for
1682 smartcards. Enabling this option will allow proper use of the
1683 SmartMIPS instructions by Linux applications. However a kernel with
1684 this option will not work on a MIPS core without SmartMIPS core. If
1685 you don't know you probably don't have SmartMIPS and should say N
1692 # Vectored interrupt mode is an R2 feature
1694 config CPU_MIPSR2_IRQ_VI
1698 # Extended interrupt mode is an R2 feature
1700 config CPU_MIPSR2_IRQ_EI
1705 depends on !CPU_R3000
1708 config GENERIC_CLOCKEVENTS_BROADCAST
1714 config CPU_DADDI_WORKAROUNDS
1717 config CPU_R4000_WORKAROUNDS
1719 select CPU_R4400_WORKAROUNDS
1721 config CPU_R4400_WORKAROUNDS
1725 # Use the generic interrupt handling code in kernel/irq/:
1727 config GENERIC_HARDIRQS
1731 config GENERIC_IRQ_PROBE
1739 # - Highmem only makes sense for the 32-bit kernel.
1740 # - The current highmem code will only work properly on physically indexed
1741 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1742 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1743 # moment we protect the user and offer the highmem option only on machines
1744 # where it's known to be safe. This will not offer highmem on a few systems
1745 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1746 # indexed CPUs but we're playing safe.
1747 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1748 # know they might have memory configurations that could make use of highmem
1752 bool "High Memory Support"
1753 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1755 config CPU_SUPPORTS_HIGHMEM
1758 config SYS_SUPPORTS_HIGHMEM
1761 config SYS_SUPPORTS_SMARTMIPS
1764 config ARCH_FLATMEM_ENABLE
1768 config ARCH_DISCONTIGMEM_ENABLE
1770 default y if SGI_IP27
1772 Say Y to support efficient handling of discontiguous physical memory,
1773 for architectures which are either NUMA (Non-Uniform Memory Access)
1774 or have huge holes in the physical address space for other reasons.
1775 See <file:Documentation/vm/numa> for more.
1777 config ARCH_POPULATES_NODE_MAP
1780 config ARCH_SPARSEMEM_ENABLE
1782 select SPARSEMEM_STATIC
1786 depends on SYS_SUPPORTS_NUMA
1788 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1789 Access). This option improves performance on systems with more
1790 than two nodes; on two node systems it is generally better to
1791 leave it disabled; on single node systems disable this option
1794 config SYS_SUPPORTS_NUMA
1800 depends on NEED_MULTIPLE_NODES
1805 bool "Multi-Processing support"
1806 depends on SYS_SUPPORTS_SMP
1808 select USE_GENERIC_SMP_HELPERS
1810 This enables support for systems with more than one CPU. If you have
1811 a system with only one CPU, like most personal computers, say N. If
1812 you have a system with more than one CPU, say Y.
1814 If you say N here, the kernel will run on single and multiprocessor
1815 machines, but will use only one CPU of a multiprocessor machine. If
1816 you say Y here, the kernel will run on many, but not all,
1817 singleprocessor machines. On a singleprocessor machine, the kernel
1818 will run faster if you say N here.
1820 People using multiprocessor machines who say Y here should also say
1821 Y to "Enhanced Real Time Clock Support", below.
1823 See also the SMP-HOWTO available at
1824 <http://www.tldp.org/docs.html#howto>.
1826 If you don't know what to do here, say N.
1831 config SYS_SUPPORTS_MIPS_CMP
1834 config SYS_SUPPORTS_SMP
1837 config NR_CPUS_DEFAULT_1
1840 config NR_CPUS_DEFAULT_2
1843 config NR_CPUS_DEFAULT_4
1846 config NR_CPUS_DEFAULT_8
1849 config NR_CPUS_DEFAULT_16
1852 config NR_CPUS_DEFAULT_32
1855 config NR_CPUS_DEFAULT_64
1859 int "Maximum number of CPUs (2-64)"
1860 range 1 64 if NR_CPUS_DEFAULT_1
1862 default "1" if NR_CPUS_DEFAULT_1
1863 default "2" if NR_CPUS_DEFAULT_2
1864 default "4" if NR_CPUS_DEFAULT_4
1865 default "8" if NR_CPUS_DEFAULT_8
1866 default "16" if NR_CPUS_DEFAULT_16
1867 default "32" if NR_CPUS_DEFAULT_32
1868 default "64" if NR_CPUS_DEFAULT_64
1870 This allows you to specify the maximum number of CPUs which this
1871 kernel will support. The maximum supported value is 32 for 32-bit
1872 kernel and 64 for 64-bit kernels; the minimum value which makes
1873 sense is 1 for Qemu (useful only for kernel debugging purposes)
1874 and 2 for all others.
1876 This is purely to save memory - each supported CPU adds
1877 approximately eight kilobytes to the kernel image. For best
1878 performance should round up your number of processors to the next
1881 source "kernel/time/Kconfig"
1884 # Timer Interrupt Frequency Configuration
1888 prompt "Timer frequency"
1891 Allows the configuration of the timer frequency.
1894 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1897 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1900 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1903 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1906 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1909 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1912 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1916 config SYS_SUPPORTS_48HZ
1919 config SYS_SUPPORTS_100HZ
1922 config SYS_SUPPORTS_128HZ
1925 config SYS_SUPPORTS_250HZ
1928 config SYS_SUPPORTS_256HZ
1931 config SYS_SUPPORTS_1000HZ
1934 config SYS_SUPPORTS_1024HZ
1937 config SYS_SUPPORTS_ARBIT_HZ
1939 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1940 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1941 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1942 !SYS_SUPPORTS_1024HZ
1947 default 100 if HZ_100
1948 default 128 if HZ_128
1949 default 250 if HZ_250
1950 default 256 if HZ_256
1951 default 1000 if HZ_1000
1952 default 1024 if HZ_1024
1954 source "kernel/Kconfig.preempt"
1956 config MIPS_INSANE_LARGE
1957 bool "Support for large 64-bit configurations"
1958 depends on CPU_R10000 && 64BIT
1960 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1961 previous 64-bit processors which only supported 40 bit / 1TB. If you
1962 need processes of more than 1TB virtual address space, say Y here.
1963 This will result in additional memory usage, so it is not
1964 recommended for normal users.
1967 bool "Kexec system call (EXPERIMENTAL)"
1968 depends on EXPERIMENTAL
1970 kexec is a system call that implements the ability to shutdown your
1971 current kernel, and to start another kernel. It is like a reboot
1972 but it is independent of the system firmware. And like a reboot
1973 you can start any kernel with it, not just Linux.
1975 The name comes from the similarity to the exec system call.
1977 It is an ongoing process to be certain the hardware in a machine
1978 is properly shutdown, so do not be surprised if this code does not
1979 initially work for you. It may help to enable device hotplugging
1980 support. As of this writing the exact hardware interface is
1981 strongly in flux, so no good recommendation can be made.
1984 bool "Enable seccomp to safely compute untrusted bytecode"
1988 This kernel feature is useful for number crunching applications
1989 that may need to compute untrusted bytecode during their
1990 execution. By using pipes or other transports made available to
1991 the process as file descriptors supporting the read/write
1992 syscalls, it's possible to isolate those applications in
1993 their own address space using seccomp. Once seccomp is
1994 enabled via /proc/<pid>/seccomp, it cannot be disabled
1995 and the task is only allowed to execute a few safe syscalls
1996 defined by each seccomp mode.
1998 If unsure, say Y. Only embedded should say N here.
2002 config LOCKDEP_SUPPORT
2006 config STACKTRACE_SUPPORT
2010 source "init/Kconfig"
2012 config PROBE_INITRD_HEADER
2013 bool "Probe initrd header created by addinitrd"
2014 depends on BLK_DEV_INITRD
2016 Probe initrd header at the last page of kernel image.
2017 Say Y here if you are using arch/mips/boot/addinitrd.c to
2018 add initrd or initramfs image to the kernel image.
2021 source "kernel/Kconfig.freezer"
2023 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2031 bool "Support for PCI controller"
2032 depends on HW_HAS_PCI
2035 Find out whether you have a PCI motherboard. PCI is the name of a
2036 bus system, i.e. the way the CPU talks to the other stuff inside
2037 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2043 source "drivers/pci/Kconfig"
2046 # ISA support is now enabled via select. Too many systems still have the one
2047 # or other ISA chip on the board that users don't know about so don't expect
2048 # users to choose the right thing ...
2055 depends on HW_HAS_EISA
2057 select GENERIC_ISA_DMA
2059 The Extended Industry Standard Architecture (EISA) bus was
2060 developed as an open alternative to the IBM MicroChannel bus.
2062 The EISA bus provided some of the features of the IBM MicroChannel
2063 bus while maintaining backward compatibility with cards made for
2064 the older ISA bus. The EISA bus saw limited use between 1988 and
2065 1995 when it was made obsolete by the PCI bus.
2067 Say Y here if you are building a kernel for an EISA-based machine.
2071 source "drivers/eisa/Kconfig"
2074 bool "TURBOchannel support"
2075 depends on MACH_DECSTATION
2077 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2078 processors. Documentation on writing device drivers for TurboChannel
2080 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2083 # bool "Access.Bus support"
2096 source "drivers/pcmcia/Kconfig"
2098 source "drivers/pci/hotplug/Kconfig"
2102 menu "Executable file formats"
2104 source "fs/Kconfig.binfmt"
2109 config MIPS32_COMPAT
2110 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2113 Select this option if you want Linux/MIPS 32-bit binary
2114 compatibility. Since all software available for Linux/MIPS is
2115 currently 32-bit you should say Y here.
2119 depends on MIPS32_COMPAT
2122 config SYSVIPC_COMPAT
2124 depends on COMPAT && SYSVIPC
2128 bool "Kernel support for o32 binaries"
2129 depends on MIPS32_COMPAT
2131 Select this option if you want to run o32 binaries. These are pure
2132 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2133 existing binaries are in this format.
2138 bool "Kernel support for n32 binaries"
2139 depends on MIPS32_COMPAT
2141 Select this option if you want to run n32 binaries. These are
2142 64-bit binaries using 32-bit quantities for addressing and certain
2143 data that would normally be 64-bit. They are used in special
2150 default y if MIPS32_O32 || MIPS32_N32
2154 menu "Power management options"
2156 config ARCH_HIBERNATION_POSSIBLE
2158 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2160 config ARCH_SUSPEND_POSSIBLE
2162 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2164 source "kernel/power/Kconfig"
2168 source "net/Kconfig"
2170 source "drivers/Kconfig"
2174 source "arch/mips/Kconfig.debug"
2176 source "security/Kconfig"
2178 source "crypto/Kconfig"
2180 source "lib/Kconfig"