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
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
80 select GENERIC_HARDIRQS_NO__DO_IRQ
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
135 select GENERIC_HARDIRQS_NO__DO_IRQ
137 This a family of machines based on the MIPS R4030 chipset which was
138 used by several vendors to build RISC/os and Windows NT workstations.
139 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
140 Olivetti M700-10 workstations.
143 bool "LASAT Networks platforms"
146 select DMA_NONCOHERENT
147 select SYS_HAS_EARLY_PRINTK
150 select PCI_GT64XXX_PCI0
152 select R5000_CPU_SCACHE
153 select SYS_HAS_CPU_R5000
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select GENERIC_HARDIRQS_NO__DO_IRQ
160 bool "Lemote Fulong mini-PC"
161 select ARCH_SPARSEMEM_ENABLE
164 select SYS_HAS_CPU_LOONGSON2
165 select DMA_NONCOHERENT
168 select HAVE_STD_PC_SERIAL_PORT
173 select SYS_SUPPORTS_32BIT_KERNEL
174 select SYS_SUPPORTS_64BIT_KERNEL
175 select SYS_SUPPORTS_LITTLE_ENDIAN
176 select SYS_SUPPORTS_HIGHMEM
177 select SYS_HAS_EARLY_PRINTK
178 select GENERIC_HARDIRQS_NO__DO_IRQ
179 select GENERIC_ISA_DMA_SUPPORT_BROKEN
182 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
186 bool "MIPS Malta board"
187 select ARCH_MAY_HAVE_PC_FDC
192 select DMA_NONCOHERENT
193 select GENERIC_ISA_DMA
199 select MIPS_BOARDS_GEN
201 select MIPS_CPU_SCACHE
202 select PCI_GT64XXX_PCI0
205 select SYS_HAS_CPU_MIPS32_R1
206 select SYS_HAS_CPU_MIPS32_R2
207 select SYS_HAS_CPU_MIPS64_R1
208 select SYS_HAS_CPU_NEVADA
209 select SYS_HAS_CPU_RM7000
210 select SYS_HAS_EARLY_PRINTK
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_64BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_LITTLE_ENDIAN
215 select SYS_SUPPORTS_MIPS_CMP if BROKEN # because SYNC_R4K is broken
216 select SYS_SUPPORTS_MULTITHREADING
217 select SYS_SUPPORTS_SMARTMIPS
219 This enables support for the MIPS Technologies Malta evaluation
223 bool 'MIPS simulator (MIPSsim)'
226 select DMA_NONCOHERENT
227 select SYS_HAS_EARLY_PRINTK
230 select SYS_HAS_CPU_MIPS32_R1
231 select SYS_HAS_CPU_MIPS32_R2
232 select SYS_HAS_EARLY_PRINTK
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_BIG_ENDIAN
235 select SYS_SUPPORTS_MULTITHREADING
236 select SYS_SUPPORTS_LITTLE_ENDIAN
238 This option enables support for MIPS Technologies MIPSsim software
242 bool "NEC EMMA series based machines"
245 bool "NEC VR4100 series based machines"
248 select SYS_HAS_CPU_VR41XX
249 select GENERIC_HARDIRQS_NO__DO_IRQ
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
363 select GENERIC_HARDIRQS_NO__DO_IRQ
365 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
366 workstations. To compile a Linux kernel that runs on these, say Y
370 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
371 depends on EXPERIMENTAL
377 select DEFAULT_SGI_PARTITION
378 select DMA_NONCOHERENT
379 select GENERIC_ISA_DMA_SUPPORT_BROKEN
385 select SGI_HAS_INDYDOG
391 select SYS_HAS_CPU_R10000
392 select SYS_HAS_EARLY_PRINTK
393 select SYS_SUPPORTS_64BIT_KERNEL
394 select SYS_SUPPORTS_BIG_ENDIAN
396 This is the SGI Indigo2 with R10000 processor. To compile a Linux
397 kernel that runs on these, say Y here.
406 select DMA_NONCOHERENT
409 select R5000_CPU_SCACHE
410 select RM7000_CPU_SCACHE
411 select SYS_HAS_CPU_R5000
412 select SYS_HAS_CPU_R10000 if BROKEN
413 select SYS_HAS_CPU_RM7000
414 select SYS_HAS_CPU_NEVADA
415 select SYS_SUPPORTS_64BIT_KERNEL
416 select SYS_SUPPORTS_BIG_ENDIAN
418 If you want this kernel to run on SGI O2 workstation, say Y here.
421 bool "Sibyte BCM91120C-CRhine"
422 depends on EXPERIMENTAL
425 select SIBYTE_BCM1120
427 select SYS_HAS_CPU_SB1
428 select SYS_SUPPORTS_BIG_ENDIAN
429 select SYS_SUPPORTS_LITTLE_ENDIAN
432 bool "Sibyte BCM91120x-Carmel"
433 depends on EXPERIMENTAL
436 select SIBYTE_BCM1120
438 select SYS_HAS_CPU_SB1
439 select SYS_SUPPORTS_BIG_ENDIAN
440 select SYS_SUPPORTS_LITTLE_ENDIAN
443 bool "Sibyte BCM91125C-CRhone"
444 depends on EXPERIMENTAL
447 select SIBYTE_BCM1125
449 select SYS_HAS_CPU_SB1
450 select SYS_SUPPORTS_BIG_ENDIAN
451 select SYS_SUPPORTS_HIGHMEM
452 select SYS_SUPPORTS_LITTLE_ENDIAN
455 bool "Sibyte BCM91125E-Rhone"
456 depends on EXPERIMENTAL
459 select SIBYTE_BCM1125H
461 select SYS_HAS_CPU_SB1
462 select SYS_SUPPORTS_BIG_ENDIAN
463 select SYS_SUPPORTS_LITTLE_ENDIAN
466 bool "Sibyte BCM91250A-SWARM"
469 select NR_CPUS_DEFAULT_2
472 select SYS_HAS_CPU_SB1
473 select SYS_SUPPORTS_BIG_ENDIAN
474 select SYS_SUPPORTS_HIGHMEM
475 select SYS_SUPPORTS_LITTLE_ENDIAN
476 select ZONE_DMA32 if 64BIT
478 config SIBYTE_LITTLESUR
479 bool "Sibyte BCM91250C2-LittleSur"
480 depends on EXPERIMENTAL
483 select NR_CPUS_DEFAULT_2
486 select SYS_HAS_CPU_SB1
487 select SYS_SUPPORTS_BIG_ENDIAN
488 select SYS_SUPPORTS_HIGHMEM
489 select SYS_SUPPORTS_LITTLE_ENDIAN
491 config SIBYTE_SENTOSA
492 bool "Sibyte BCM91250E-Sentosa"
493 depends on EXPERIMENTAL
496 select NR_CPUS_DEFAULT_2
499 select SYS_HAS_CPU_SB1
500 select SYS_SUPPORTS_BIG_ENDIAN
501 select SYS_SUPPORTS_LITTLE_ENDIAN
504 bool "Sibyte BCM91480B-BigSur"
507 select NR_CPUS_DEFAULT_4
508 select SIBYTE_BCM1x80
510 select SYS_HAS_CPU_SB1
511 select SYS_SUPPORTS_BIG_ENDIAN
512 select SYS_SUPPORTS_HIGHMEM
513 select SYS_SUPPORTS_LITTLE_ENDIAN
514 select ZONE_DMA32 if 64BIT
517 bool "SNI RM200/300/400"
518 select ARC if CPU_LITTLE_ENDIAN
519 select ARC32 if CPU_LITTLE_ENDIAN
520 select SNIPROM if CPU_BIG_ENDIAN
521 select ARCH_MAY_HAVE_PC_FDC
525 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
526 select DMA_NONCOHERENT
527 select GENERIC_ISA_DMA
534 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
535 select SYS_HAS_CPU_R4X00
536 select SYS_HAS_CPU_R5000
537 select SYS_HAS_CPU_R10000
538 select R5000_CPU_SCACHE
539 select SYS_HAS_EARLY_PRINTK
540 select SYS_SUPPORTS_32BIT_KERNEL
541 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
542 select SYS_SUPPORTS_BIG_ENDIAN
543 select SYS_SUPPORTS_HIGHMEM
544 select SYS_SUPPORTS_LITTLE_ENDIAN
546 The SNI RM200/300/400 are MIPS-based machines manufactured by
547 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
548 Technology and now in turn merged with Fujitsu. Say Y here to
549 support this machine type.
552 bool "Toshiba TX39 series based machines"
555 bool "Toshiba TX49 series based machines"
557 config MIKROTIK_RB532
558 bool "Mikrotik RB532 boards"
561 select DMA_NONCOHERENT
562 select GENERIC_HARDIRQS_NO__DO_IRQ
565 select SYS_HAS_CPU_MIPS32_R1
566 select SYS_SUPPORTS_32BIT_KERNEL
567 select SYS_SUPPORTS_LITTLE_ENDIAN
570 select ARCH_REQUIRE_GPIOLIB
572 Support the Mikrotik(tm) RouterBoard 532 series,
573 based on the IDT RC32434 SoC.
576 bool "Wind River PPMC board"
581 select DMA_NONCOHERENT
583 select PCI_GT64XXX_PCI0
585 select SYS_HAS_CPU_MIPS32_R1
586 select SYS_HAS_CPU_MIPS32_R2
587 select SYS_HAS_CPU_MIPS64_R1
588 select SYS_HAS_CPU_NEVADA
589 select SYS_HAS_CPU_RM7000
590 select SYS_SUPPORTS_32BIT_KERNEL
591 select SYS_SUPPORTS_64BIT_KERNEL
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_LITTLE_ENDIAN
595 This enables support for the Wind River MIPS32 4KC PPMC evaluation
596 board, which is based on GT64120 bridge chip.
598 config CAVIUM_OCTEON_SIMULATOR
599 bool "Support for the Cavium Networks Octeon Simulator"
601 select 64BIT_PHYS_ADDR
603 select SYS_SUPPORTS_64BIT_KERNEL
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_HIGHMEM
606 select CPU_CAVIUM_OCTEON
608 The Octeon simulator is software performance model of the Cavium
609 Octeon Processor. It supports simulating Octeon processors on x86
612 config CAVIUM_OCTEON_REFERENCE_BOARD
613 bool "Support for the Cavium Networks Octeon reference board"
615 select 64BIT_PHYS_ADDR
617 select SYS_SUPPORTS_64BIT_KERNEL
618 select SYS_SUPPORTS_BIG_ENDIAN
619 select SYS_SUPPORTS_HIGHMEM
620 select SYS_HAS_EARLY_PRINTK
621 select CPU_CAVIUM_OCTEON
624 This option supports all of the Octeon reference boards from Cavium
625 Networks. It builds a kernel that dynamically determines the Octeon
626 CPU type and supports all known board reference implementations.
627 Some of the supported boards are:
634 Say Y here for most Octeon reference boards.
638 source "arch/mips/alchemy/Kconfig"
639 source "arch/mips/basler/excite/Kconfig"
640 source "arch/mips/emma/Kconfig"
641 source "arch/mips/jazz/Kconfig"
642 source "arch/mips/lasat/Kconfig"
643 source "arch/mips/pmc-sierra/Kconfig"
644 source "arch/mips/sgi-ip27/Kconfig"
645 source "arch/mips/sibyte/Kconfig"
646 source "arch/mips/txx9/Kconfig"
647 source "arch/mips/vr41xx/Kconfig"
648 source "arch/mips/cavium-octeon/Kconfig"
652 config RWSEM_GENERIC_SPINLOCK
656 config RWSEM_XCHGADD_ALGORITHM
659 config ARCH_HAS_ILOG2_U32
663 config ARCH_HAS_ILOG2_U64
667 config ARCH_SUPPORTS_OPROFILE
669 default y if !MIPS_MT_SMTC
671 config GENERIC_FIND_NEXT_BIT
675 config GENERIC_HWEIGHT
679 config GENERIC_CALIBRATE_DELAY
683 config GENERIC_CLOCKEVENTS
691 config GENERIC_CMOS_UPDATE
695 config SCHED_OMIT_FRAME_POINTER
699 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
767 config DMA_NONCOHERENT
769 select DMA_NEED_PCI_MAP_STATE
771 config DMA_NEED_PCI_MAP_STATE
775 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
776 depends on SYS_HAS_EARLY_PRINTK
779 This option enables special console drivers which allow the kernel
780 to print messages very early in the bootup process.
782 This is useful for kernel debugging when your machine crashes very
783 early before the console code is initialized. For normal operation,
784 it is not recommended because it looks ugly on some machines and
785 doesn't cooperate with an X server. You should normally say N here,
786 unless you want to debug such a crash.
788 config SYS_HAS_EARLY_PRINTK
807 config MIPS_DISABLE_OBSOLETE_IDE
816 config GENERIC_ISA_DMA
818 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
820 config GENERIC_ISA_DMA_SUPPORT_BROKEN
822 select GENERIC_ISA_DMA
828 # Endianess selection. Sufficiently obscure so many users don't know what to
829 # answer,so we try hard to limit the available choices. Also the use of a
830 # choice statement should be more obvious to the user.
833 prompt "Endianess selection"
835 Some MIPS machines can be configured for either little or big endian
836 byte order. These modes require different kernels and a different
837 Linux distribution. In general there is one preferred byteorder for a
838 particular system but some systems are just as commonly used in the
839 one or the other endianness.
841 config CPU_BIG_ENDIAN
843 depends on SYS_SUPPORTS_BIG_ENDIAN
845 config CPU_LITTLE_ENDIAN
847 depends on SYS_SUPPORTS_LITTLE_ENDIAN
852 config SYS_SUPPORTS_APM_EMULATION
855 config SYS_SUPPORTS_BIG_ENDIAN
858 config SYS_SUPPORTS_LITTLE_ENDIAN
885 config IRQ_CPU_OCTEON
888 config MIPS_BOARDS_GEN
891 config PCI_GT64XXX_PCI0
894 config NO_EXCEPT_FILL
906 select DMA_NONCOHERENT
907 select SYS_HAS_CPU_MIPS32_R2
908 select SYS_SUPPORTS_32BIT_KERNEL
909 select SYS_SUPPORTS_LITTLE_ENDIAN
910 select SYS_SUPPORTS_BIG_ENDIAN
911 select GENERIC_HARDIRQS_NO__DO_IRQ
913 select CPU_MIPSR2_IRQ_VI
925 select DMA_NONCOHERENT
927 select SYS_HAS_CPU_MIPS32_R1
928 select SYS_HAS_EARLY_PRINTK
929 select SYS_SUPPORTS_32BIT_KERNEL
930 select GENERIC_HARDIRQS_NO__DO_IRQ
944 config SGI_HAS_INDYDOG
962 config DEFAULT_SGI_PARTITION
974 config MIPS_L1_CACHE_SHIFT
976 default "4" if MACH_DECSTATION || MIKROTIK_RB532
977 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
978 default "4" if PMC_MSP4200_EVAL
981 config HAVE_STD_PC_SERIAL_PORT
985 bool "ARC console support"
986 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
990 depends on MACH_JAZZ || SNI_RM || SGI_IP32
995 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1004 menu "CPU selection"
1010 config CPU_LOONGSON2
1012 depends on SYS_HAS_CPU_LOONGSON2
1013 select CPU_SUPPORTS_32BIT_KERNEL
1014 select CPU_SUPPORTS_64BIT_KERNEL
1015 select CPU_SUPPORTS_HIGHMEM
1017 The Loongson 2E processor implements the MIPS III instruction set
1018 with many extensions.
1020 config CPU_MIPS32_R1
1021 bool "MIPS32 Release 1"
1022 depends on SYS_HAS_CPU_MIPS32_R1
1024 select CPU_HAS_PREFETCH
1025 select CPU_SUPPORTS_32BIT_KERNEL
1026 select CPU_SUPPORTS_HIGHMEM
1028 Choose this option to build a kernel for release 1 or later of the
1029 MIPS32 architecture. Most modern embedded systems with a 32-bit
1030 MIPS processor are based on a MIPS32 processor. If you know the
1031 specific type of processor in your system, choose those that one
1032 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1033 Release 2 of the MIPS32 architecture is available since several
1034 years so chances are you even have a MIPS32 Release 2 processor
1035 in which case you should choose CPU_MIPS32_R2 instead for better
1038 config CPU_MIPS32_R2
1039 bool "MIPS32 Release 2"
1040 depends on SYS_HAS_CPU_MIPS32_R2
1042 select CPU_HAS_PREFETCH
1043 select CPU_SUPPORTS_32BIT_KERNEL
1044 select CPU_SUPPORTS_HIGHMEM
1046 Choose this option to build a kernel for release 2 or later of the
1047 MIPS32 architecture. Most modern embedded systems with a 32-bit
1048 MIPS processor are based on a MIPS32 processor. If you know the
1049 specific type of processor in your system, choose those that one
1050 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1052 config CPU_MIPS64_R1
1053 bool "MIPS64 Release 1"
1054 depends on SYS_HAS_CPU_MIPS64_R1
1056 select CPU_HAS_PREFETCH
1057 select CPU_SUPPORTS_32BIT_KERNEL
1058 select CPU_SUPPORTS_64BIT_KERNEL
1059 select CPU_SUPPORTS_HIGHMEM
1061 Choose this option to build a kernel for release 1 or later of the
1062 MIPS64 architecture. Many modern embedded systems with a 64-bit
1063 MIPS processor are based on a MIPS64 processor. If you know the
1064 specific type of processor in your system, choose those that one
1065 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1066 Release 2 of the MIPS64 architecture is available since several
1067 years so chances are you even have a MIPS64 Release 2 processor
1068 in which case you should choose CPU_MIPS64_R2 instead for better
1071 config CPU_MIPS64_R2
1072 bool "MIPS64 Release 2"
1073 depends on SYS_HAS_CPU_MIPS64_R2
1075 select CPU_HAS_PREFETCH
1076 select CPU_SUPPORTS_32BIT_KERNEL
1077 select CPU_SUPPORTS_64BIT_KERNEL
1078 select CPU_SUPPORTS_HIGHMEM
1080 Choose this option to build a kernel for release 2 or later of the
1081 MIPS64 architecture. Many modern embedded systems with a 64-bit
1082 MIPS processor are based on a MIPS64 processor. If you know the
1083 specific type of processor in your system, choose those that one
1084 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1088 depends on SYS_HAS_CPU_R3000
1090 select CPU_SUPPORTS_32BIT_KERNEL
1091 select CPU_SUPPORTS_HIGHMEM
1093 Please make sure to pick the right CPU type. Linux/MIPS is not
1094 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1095 *not* work on R4000 machines and vice versa. However, since most
1096 of the supported machines have an R4000 (or similar) CPU, R4x00
1097 might be a safe bet. If the resulting kernel does not work,
1098 try to recompile with R3000.
1102 depends on SYS_HAS_CPU_TX39XX
1103 select CPU_SUPPORTS_32BIT_KERNEL
1107 depends on SYS_HAS_CPU_VR41XX
1108 select CPU_SUPPORTS_32BIT_KERNEL
1109 select CPU_SUPPORTS_64BIT_KERNEL
1111 The options selects support for the NEC VR4100 series of processors.
1112 Only choose this option if you have one of these processors as a
1113 kernel built with this option will not run on any other type of
1114 processor or vice versa.
1118 depends on SYS_HAS_CPU_R4300
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1123 MIPS Technologies R4300-series processors.
1127 depends on SYS_HAS_CPU_R4X00
1129 select CPU_SUPPORTS_32BIT_KERNEL
1130 select CPU_SUPPORTS_64BIT_KERNEL
1132 MIPS Technologies R4000-series processors other than 4300, including
1133 the R4000, R4400, R4600, and 4700.
1137 depends on SYS_HAS_CPU_TX49XX
1139 select CPU_HAS_PREFETCH
1140 select CPU_SUPPORTS_32BIT_KERNEL
1141 select CPU_SUPPORTS_64BIT_KERNEL
1145 depends on SYS_HAS_CPU_R5000
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_64BIT_KERNEL
1150 MIPS Technologies R5000-series processors other than the Nevada.
1154 depends on SYS_HAS_CPU_R5432
1156 select CPU_SUPPORTS_32BIT_KERNEL
1157 select CPU_SUPPORTS_64BIT_KERNEL
1161 depends on SYS_HAS_CPU_R5500
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1166 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1171 depends on EXPERIMENTAL
1173 depends on SYS_HAS_CPU_R6000
1174 select CPU_SUPPORTS_32BIT_KERNEL
1176 MIPS Technologies R6000 and R6000A series processors. Note these
1177 processors are extremely rare and the support for them is incomplete.
1181 depends on SYS_HAS_CPU_NEVADA
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_64BIT_KERNEL
1186 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1190 depends on EXPERIMENTAL
1191 depends on SYS_HAS_CPU_R8000
1193 select CPU_HAS_PREFETCH
1194 select CPU_SUPPORTS_64BIT_KERNEL
1196 MIPS Technologies R8000 processors. Note these processors are
1197 uncommon and the support for them is incomplete.
1201 depends on SYS_HAS_CPU_R10000
1203 select CPU_HAS_PREFETCH
1204 select CPU_SUPPORTS_32BIT_KERNEL
1205 select CPU_SUPPORTS_64BIT_KERNEL
1206 select CPU_SUPPORTS_HIGHMEM
1208 MIPS Technologies R10000-series processors.
1212 depends on SYS_HAS_CPU_RM7000
1214 select CPU_HAS_PREFETCH
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1217 select CPU_SUPPORTS_HIGHMEM
1221 depends on SYS_HAS_CPU_RM9000
1223 select CPU_HAS_PREFETCH
1224 select CPU_SUPPORTS_32BIT_KERNEL
1225 select CPU_SUPPORTS_64BIT_KERNEL
1226 select CPU_SUPPORTS_HIGHMEM
1227 select WEAK_ORDERING
1231 depends on SYS_HAS_CPU_SB1
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1235 select CPU_SUPPORTS_HIGHMEM
1236 select WEAK_ORDERING
1238 config CPU_CAVIUM_OCTEON
1239 bool "Cavium Octeon processor"
1241 select IRQ_CPU_OCTEON
1242 select CPU_HAS_PREFETCH
1243 select CPU_SUPPORTS_64BIT_KERNEL
1244 select SYS_SUPPORTS_SMP
1245 select NR_CPUS_DEFAULT_16
1246 select WEAK_ORDERING
1247 select WEAK_REORDERING_BEYOND_LLSC
1248 select CPU_SUPPORTS_HIGHMEM
1250 The Cavium Octeon processor is a highly integrated chip containing
1251 many ethernet hardware widgets for networking tasks. The processor
1252 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1253 Full details can be found at http://www.caviumnetworks.com.
1257 config SYS_HAS_CPU_LOONGSON2
1260 config SYS_HAS_CPU_MIPS32_R1
1263 config SYS_HAS_CPU_MIPS32_R2
1266 config SYS_HAS_CPU_MIPS64_R1
1269 config SYS_HAS_CPU_MIPS64_R2
1272 config SYS_HAS_CPU_R3000
1275 config SYS_HAS_CPU_TX39XX
1278 config SYS_HAS_CPU_VR41XX
1281 config SYS_HAS_CPU_R4300
1284 config SYS_HAS_CPU_R4X00
1287 config SYS_HAS_CPU_TX49XX
1290 config SYS_HAS_CPU_R5000
1293 config SYS_HAS_CPU_R5432
1296 config SYS_HAS_CPU_R5500
1299 config SYS_HAS_CPU_R6000
1302 config SYS_HAS_CPU_NEVADA
1305 config SYS_HAS_CPU_R8000
1308 config SYS_HAS_CPU_R10000
1311 config SYS_HAS_CPU_RM7000
1314 config SYS_HAS_CPU_RM9000
1317 config SYS_HAS_CPU_SB1
1321 # CPU may reorder R->R, R->W, W->R, W->W
1322 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1324 config WEAK_ORDERING
1328 # CPU may reorder reads and writes beyond LL/SC
1329 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1331 config WEAK_REORDERING_BEYOND_LLSC
1336 # These two indicate any level of the MIPS32 and MIPS64 architecture
1340 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1344 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1347 # These two indicate the revision of the architecture, either Release 1 or Release 2
1351 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1355 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1357 config SYS_SUPPORTS_32BIT_KERNEL
1359 config SYS_SUPPORTS_64BIT_KERNEL
1361 config CPU_SUPPORTS_32BIT_KERNEL
1363 config CPU_SUPPORTS_64BIT_KERNEL
1367 # Set to y for ptrace access to watch registers.
1369 config HARDWARE_WATCHPOINTS
1371 default y if CPU_MIPS32 || CPU_MIPS64
1377 prompt "Kernel code model"
1379 You should only select this option if you have a workload that
1380 actually benefits from 64-bit processing or if your machine has
1381 large memory. You will only be presented a single option in this
1382 menu if your system does not support both 32-bit and 64-bit kernels.
1385 bool "32-bit kernel"
1386 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1389 Select this option if you want to build a 32-bit kernel.
1391 bool "64-bit kernel"
1392 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
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
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 the R8000 processor. Not that at the time of this writing
1417 this option is still high experimental; there are also issues with
1418 compatibility of user applications.
1420 config PAGE_SIZE_16KB
1422 depends on !CPU_R3000 && !CPU_TX39XX
1424 Using 16kB page size will result in higher performance kernel at
1425 the price of higher memory consumption. This option is available on
1426 all non-R3000 family processors. Note that you will need a suitable
1427 Linux distribution to support this.
1429 config PAGE_SIZE_64KB
1431 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1433 Using 64kB page size will result in higher performance kernel at
1434 the price of higher memory consumption. This option is available on
1435 all non-R3000 family processor. Not that at the time of this
1436 writing this option is still high experimental.
1443 config IP22_CPU_SCACHE
1448 # Support for a MIPS32 / MIPS64 style S-caches
1450 config MIPS_CPU_SCACHE
1454 config R5000_CPU_SCACHE
1458 config RM7000_CPU_SCACHE
1462 config SIBYTE_DMA_PAGEOPS
1463 bool "Use DMA to clear/copy pages"
1466 Instead of using the CPU to zero and copy pages, use a Data Mover
1467 channel. These DMA channels are otherwise unused by the standard
1468 SiByte Linux port. Seems to give a small performance benefit.
1470 config CPU_HAS_PREFETCH
1474 prompt "MIPS MT options"
1476 config MIPS_MT_DISABLED
1477 bool "Disable multithreading support."
1479 Use this option if your workload can't take advantage of
1480 MIPS hardware multithreading support. On systems that don't have
1481 the option of an MT-enabled processor this option will be the only
1482 option in this menu.
1485 bool "Use 1 TC on each available VPE for SMP"
1486 depends on SYS_SUPPORTS_MULTITHREADING
1487 select CPU_MIPSR2_IRQ_VI
1488 select CPU_MIPSR2_IRQ_EI
1490 select NR_CPUS_DEFAULT_2
1492 select SYS_SUPPORTS_SCHED_SMT if SMP
1493 select SYS_SUPPORTS_SMP
1496 This is a kernel model which is also known a VSMP or lately
1497 has been marketesed into SMVP.
1500 bool "SMTC: Use all TCs on all VPEs for SMP"
1501 depends on CPU_MIPS32_R2
1502 #depends on CPU_MIPS64_R2 # once there is hardware ...
1503 depends on SYS_SUPPORTS_MULTITHREADING
1504 select CPU_MIPSR2_IRQ_VI
1505 select CPU_MIPSR2_IRQ_EI
1507 select NR_CPUS_DEFAULT_8
1509 select SYS_SUPPORTS_SMP
1512 This is a kernel model which is known a SMTC or lately has been
1513 marketesed into SMVP.
1521 bool "SMT (multithreading) scheduler support"
1522 depends on SYS_SUPPORTS_SCHED_SMT
1525 SMT scheduler support improves the CPU scheduler's decision making
1526 when dealing with MIPS MT enabled cores at a cost of slightly
1527 increased overhead in some places. If unsure say N here.
1529 config SYS_SUPPORTS_SCHED_SMT
1533 config SYS_SUPPORTS_MULTITHREADING
1536 config MIPS_MT_FPAFF
1537 bool "Dynamic FPU affinity for FP-intensive threads"
1539 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1541 config MIPS_VPE_LOADER
1542 bool "VPE loader support."
1543 depends on SYS_SUPPORTS_MULTITHREADING
1544 select CPU_MIPSR2_IRQ_VI
1545 select CPU_MIPSR2_IRQ_EI
1548 Includes a loader for loading an elf relocatable object
1549 onto another VPE and running it.
1551 config MIPS_MT_SMTC_IM_BACKSTOP
1552 bool "Use per-TC register bits as backstop for inhibited IM bits"
1553 depends on MIPS_MT_SMTC
1556 To support multiple TC microthreads acting as "CPUs" within
1557 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1558 during interrupt handling. To support legacy drivers and interrupt
1559 controller management code, SMTC has a "backstop" to track and
1560 if necessary restore the interrupt mask. This has some performance
1561 impact on interrupt service overhead.
1563 config MIPS_MT_SMTC_IRQAFF
1564 bool "Support IRQ affinity API"
1565 depends on MIPS_MT_SMTC
1568 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1569 for SMTC Linux kernel. Requires platform support, of which
1570 an example can be found in the MIPS kernel i8259 and Malta
1571 platform code. Adds some overhead to interrupt dispatch, and
1572 should be used only if you know what you are doing.
1574 config MIPS_VPE_LOADER_TOM
1575 bool "Load VPE program into memory hidden from linux"
1576 depends on MIPS_VPE_LOADER
1579 The loader can use memory that is present but has been hidden from
1580 Linux using the kernel command line option "mem=xxMB". It's up to
1581 you to ensure the amount you put in the option and the space your
1582 program requires is less or equal to the amount physically present.
1584 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1585 config MIPS_VPE_APSP_API
1586 bool "Enable support for AP/SP API (RTLX)"
1587 depends on MIPS_VPE_LOADER
1590 config MIPS_APSP_KSPD
1592 depends on MIPS_VPE_APSP_API
1595 KSPD is a kernel daemon that accepts syscall requests from the SP
1596 side, actions them and returns the results. It also handles the
1597 "exit" syscall notifying other kernel modules the SP program is
1598 exiting. You probably want to say yes here.
1601 bool "MIPS CMP framework support"
1602 depends on SYS_SUPPORTS_MIPS_CMP
1603 select SYNC_R4K if BROKEN
1604 select SYS_SUPPORTS_SMP
1605 select SYS_SUPPORTS_SCHED_SMT if SMP
1606 select WEAK_ORDERING
1609 This is a placeholder option for the GCMP work. It will need to
1610 be handled differently...
1612 config SB1_PASS_1_WORKAROUNDS
1614 depends on CPU_SB1_PASS_1
1617 config SB1_PASS_2_WORKAROUNDS
1619 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1622 config SB1_PASS_2_1_WORKAROUNDS
1624 depends on CPU_SB1 && CPU_SB1_PASS_2
1627 config 64BIT_PHYS_ADDR
1633 config CPU_HAS_SMARTMIPS
1634 depends on SYS_SUPPORTS_SMARTMIPS
1635 bool "Support for the SmartMIPS ASE"
1637 SmartMIPS is a extension of the MIPS32 architecture aimed at
1638 increased security at both hardware and software level for
1639 smartcards. Enabling this option will allow proper use of the
1640 SmartMIPS instructions by Linux applications. However a kernel with
1641 this option will not work on a MIPS core without SmartMIPS core. If
1642 you don't know you probably don't have SmartMIPS and should say N
1649 # Vectored interrupt mode is an R2 feature
1651 config CPU_MIPSR2_IRQ_VI
1655 # Extended interrupt mode is an R2 feature
1657 config CPU_MIPSR2_IRQ_EI
1662 depends on !CPU_R3000
1665 config GENERIC_CLOCKEVENTS_BROADCAST
1671 config CPU_DADDI_WORKAROUNDS
1674 config CPU_R4000_WORKAROUNDS
1676 select CPU_R4400_WORKAROUNDS
1678 config CPU_R4400_WORKAROUNDS
1682 # Use the generic interrupt handling code in kernel/irq/:
1684 config GENERIC_HARDIRQS
1688 config GENERIC_IRQ_PROBE
1696 # - Highmem only makes sense for the 32-bit kernel.
1697 # - The current highmem code will only work properly on physically indexed
1698 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1699 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1700 # moment we protect the user and offer the highmem option only on machines
1701 # where it's known to be safe. This will not offer highmem on a few systems
1702 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1703 # indexed CPUs but we're playing safe.
1704 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1705 # know they might have memory configurations that could make use of highmem
1709 bool "High Memory Support"
1710 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1712 config CPU_SUPPORTS_HIGHMEM
1715 config SYS_SUPPORTS_HIGHMEM
1718 config SYS_SUPPORTS_SMARTMIPS
1721 config ARCH_FLATMEM_ENABLE
1725 config ARCH_DISCONTIGMEM_ENABLE
1727 default y if SGI_IP27
1729 Say Y to support efficient handling of discontiguous physical memory,
1730 for architectures which are either NUMA (Non-Uniform Memory Access)
1731 or have huge holes in the physical address space for other reasons.
1732 See <file:Documentation/vm/numa> for more.
1734 config ARCH_POPULATES_NODE_MAP
1737 config ARCH_SPARSEMEM_ENABLE
1739 select SPARSEMEM_STATIC
1743 depends on SYS_SUPPORTS_NUMA
1745 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1746 Access). This option improves performance on systems with more
1747 than two nodes; on two node systems it is generally better to
1748 leave it disabled; on single node systems disable this option
1751 config SYS_SUPPORTS_NUMA
1757 depends on NEED_MULTIPLE_NODES
1762 bool "Multi-Processing support"
1763 depends on SYS_SUPPORTS_SMP
1765 select USE_GENERIC_SMP_HELPERS
1767 This enables support for systems with more than one CPU. If you have
1768 a system with only one CPU, like most personal computers, say N. If
1769 you have a system with more than one CPU, say Y.
1771 If you say N here, the kernel will run on single and multiprocessor
1772 machines, but will use only one CPU of a multiprocessor machine. If
1773 you say Y here, the kernel will run on many, but not all,
1774 singleprocessor machines. On a singleprocessor machine, the kernel
1775 will run faster if you say N here.
1777 People using multiprocessor machines who say Y here should also say
1778 Y to "Enhanced Real Time Clock Support", below.
1780 See also the SMP-HOWTO available at
1781 <http://www.tldp.org/docs.html#howto>.
1783 If you don't know what to do here, say N.
1788 config SYS_SUPPORTS_MIPS_CMP
1791 config SYS_SUPPORTS_SMP
1794 config NR_CPUS_DEFAULT_1
1797 config NR_CPUS_DEFAULT_2
1800 config NR_CPUS_DEFAULT_4
1803 config NR_CPUS_DEFAULT_8
1806 config NR_CPUS_DEFAULT_16
1809 config NR_CPUS_DEFAULT_32
1812 config NR_CPUS_DEFAULT_64
1816 int "Maximum number of CPUs (2-64)"
1817 range 1 64 if NR_CPUS_DEFAULT_1
1819 default "1" if NR_CPUS_DEFAULT_1
1820 default "2" if NR_CPUS_DEFAULT_2
1821 default "4" if NR_CPUS_DEFAULT_4
1822 default "8" if NR_CPUS_DEFAULT_8
1823 default "16" if NR_CPUS_DEFAULT_16
1824 default "32" if NR_CPUS_DEFAULT_32
1825 default "64" if NR_CPUS_DEFAULT_64
1827 This allows you to specify the maximum number of CPUs which this
1828 kernel will support. The maximum supported value is 32 for 32-bit
1829 kernel and 64 for 64-bit kernels; the minimum value which makes
1830 sense is 1 for Qemu (useful only for kernel debugging purposes)
1831 and 2 for all others.
1833 This is purely to save memory - each supported CPU adds
1834 approximately eight kilobytes to the kernel image. For best
1835 performance should round up your number of processors to the next
1838 source "kernel/time/Kconfig"
1841 # Timer Interrupt Frequency Configuration
1845 prompt "Timer frequency"
1848 Allows the configuration of the timer frequency.
1851 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1854 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1857 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1860 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1863 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1866 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1869 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1873 config SYS_SUPPORTS_48HZ
1876 config SYS_SUPPORTS_100HZ
1879 config SYS_SUPPORTS_128HZ
1882 config SYS_SUPPORTS_250HZ
1885 config SYS_SUPPORTS_256HZ
1888 config SYS_SUPPORTS_1000HZ
1891 config SYS_SUPPORTS_1024HZ
1894 config SYS_SUPPORTS_ARBIT_HZ
1896 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1897 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1898 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1899 !SYS_SUPPORTS_1024HZ
1904 default 100 if HZ_100
1905 default 128 if HZ_128
1906 default 250 if HZ_250
1907 default 256 if HZ_256
1908 default 1000 if HZ_1000
1909 default 1024 if HZ_1024
1911 source "kernel/Kconfig.preempt"
1913 config MIPS_INSANE_LARGE
1914 bool "Support for large 64-bit configurations"
1915 depends on CPU_R10000 && 64BIT
1917 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1918 previous 64-bit processors which only supported 40 bit / 1TB. If you
1919 need processes of more than 1TB virtual address space, say Y here.
1920 This will result in additional memory usage, so it is not
1921 recommended for normal users.
1924 bool "Kexec system call (EXPERIMENTAL)"
1925 depends on EXPERIMENTAL
1927 kexec is a system call that implements the ability to shutdown your
1928 current kernel, and to start another kernel. It is like a reboot
1929 but it is independent of the system firmware. And like a reboot
1930 you can start any kernel with it, not just Linux.
1932 The name comes from the similarity to the exec system call.
1934 It is an ongoing process to be certain the hardware in a machine
1935 is properly shutdown, so do not be surprised if this code does not
1936 initially work for you. It may help to enable device hotplugging
1937 support. As of this writing the exact hardware interface is
1938 strongly in flux, so no good recommendation can be made.
1941 bool "Enable seccomp to safely compute untrusted bytecode"
1945 This kernel feature is useful for number crunching applications
1946 that may need to compute untrusted bytecode during their
1947 execution. By using pipes or other transports made available to
1948 the process as file descriptors supporting the read/write
1949 syscalls, it's possible to isolate those applications in
1950 their own address space using seccomp. Once seccomp is
1951 enabled via /proc/<pid>/seccomp, it cannot be disabled
1952 and the task is only allowed to execute a few safe syscalls
1953 defined by each seccomp mode.
1955 If unsure, say Y. Only embedded should say N here.
1959 config RWSEM_GENERIC_SPINLOCK
1963 config LOCKDEP_SUPPORT
1967 config STACKTRACE_SUPPORT
1971 source "init/Kconfig"
1973 config PROBE_INITRD_HEADER
1974 bool "Probe initrd header created by addinitrd"
1975 depends on BLK_DEV_INITRD
1977 Probe initrd header at the last page of kernel image.
1978 Say Y here if you are using arch/mips/boot/addinitrd.c to
1979 add initrd or initramfs image to the kernel image.
1982 source "kernel/Kconfig.freezer"
1984 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1992 bool "Support for PCI controller"
1993 depends on HW_HAS_PCI
1996 Find out whether you have a PCI motherboard. PCI is the name of a
1997 bus system, i.e. the way the CPU talks to the other stuff inside
1998 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2004 source "drivers/pci/Kconfig"
2007 # ISA support is now enabled via select. Too many systems still have the one
2008 # or other ISA chip on the board that users don't know about so don't expect
2009 # users to choose the right thing ...
2016 depends on HW_HAS_EISA
2018 select GENERIC_ISA_DMA
2020 The Extended Industry Standard Architecture (EISA) bus was
2021 developed as an open alternative to the IBM MicroChannel bus.
2023 The EISA bus provided some of the features of the IBM MicroChannel
2024 bus while maintaining backward compatibility with cards made for
2025 the older ISA bus. The EISA bus saw limited use between 1988 and
2026 1995 when it was made obsolete by the PCI bus.
2028 Say Y here if you are building a kernel for an EISA-based machine.
2032 source "drivers/eisa/Kconfig"
2035 bool "TURBOchannel support"
2036 depends on MACH_DECSTATION
2038 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2039 processors. Documentation on writing device drivers for TurboChannel
2041 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2044 # bool "Access.Bus support"
2057 source "drivers/pcmcia/Kconfig"
2059 source "drivers/pci/hotplug/Kconfig"
2063 menu "Executable file formats"
2065 source "fs/Kconfig.binfmt"
2070 config MIPS32_COMPAT
2071 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2074 Select this option if you want Linux/MIPS 32-bit binary
2075 compatibility. Since all software available for Linux/MIPS is
2076 currently 32-bit you should say Y here.
2080 depends on MIPS32_COMPAT
2083 config SYSVIPC_COMPAT
2085 depends on COMPAT && SYSVIPC
2089 bool "Kernel support for o32 binaries"
2090 depends on MIPS32_COMPAT
2092 Select this option if you want to run o32 binaries. These are pure
2093 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2094 existing binaries are in this format.
2099 bool "Kernel support for n32 binaries"
2100 depends on MIPS32_COMPAT
2102 Select this option if you want to run n32 binaries. These are
2103 64-bit binaries using 32-bit quantities for addressing and certain
2104 data that would normally be 64-bit. They are used in special
2111 default y if MIPS32_O32 || MIPS32_N32
2115 menu "Power management options"
2117 config ARCH_SUSPEND_POSSIBLE
2121 source "kernel/power/Kconfig"
2125 source "net/Kconfig"
2127 source "drivers/Kconfig"
2131 source "arch/mips/Kconfig.debug"
2133 source "security/Kconfig"
2135 source "crypto/Kconfig"
2137 source "lib/Kconfig"