4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
10 select HAVE_DYNAMIC_FTRACE
11 select HAVE_FTRACE_MCOUNT_RECORD
12 select HAVE_FUNCTION_GRAPH_TRACER
13 select RTC_LIB if !MACH_LOONGSON
15 mainmenu "Linux/MIPS Kernel Configuration"
17 menu "Machine selection"
27 bool "Alchemy processor based machines"
28 select 64BIT_PHYS_ADDR
32 select SYS_HAS_CPU_MIPS32_R1
33 select SYS_SUPPORTS_32BIT_KERNEL
34 select SYS_SUPPORTS_APM_EMULATION
36 select ARCH_WANT_OPTIONAL_GPIOLIB
37 select SYS_SUPPORTS_ZBOOT
40 bool "Texas Instruments AR7"
42 select DMA_NONCOHERENT
48 select SYS_HAS_CPU_MIPS32_R1
49 select SYS_HAS_EARLY_PRINTK
50 select SYS_SUPPORTS_32BIT_KERNEL
51 select SYS_SUPPORTS_LITTLE_ENDIAN
52 select SYS_SUPPORTS_ZBOOT_UART16550
53 select ARCH_REQUIRE_GPIOLIB
57 Support for the Texas Instruments AR7 System-on-a-Chip
58 family: TNETD7100, 7200 and 7300.
61 bool "Broadcom BCM47XX based boards"
64 select DMA_NONCOHERENT
67 select SYS_HAS_CPU_MIPS32_R1
68 select SYS_SUPPORTS_32BIT_KERNEL
69 select SYS_SUPPORTS_LITTLE_ENDIAN
71 select SSB_DRIVER_MIPS
72 select SSB_DRIVER_EXTIF
74 select SSB_B43_PCI_BRIDGE if PCI
75 select SSB_PCICORE_HOSTMODE if PCI
77 select SYS_HAS_EARLY_PRINTK
80 Support for BCM47XX based boards
83 bool "Broadcom BCM63XX based boards"
86 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_SUPPORTS_32BIT_KERNEL
90 select SYS_SUPPORTS_BIG_ENDIAN
91 select SYS_HAS_EARLY_PRINTK
93 select ARCH_REQUIRE_GPIOLIB
95 Support for BCM63XX based boards
102 select DMA_NONCOHERENT
108 select PCI_GT64XXX_PCI0
110 select SYS_HAS_CPU_NEVADA
111 select SYS_HAS_EARLY_PRINTK
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_64BIT_KERNEL
114 select SYS_SUPPORTS_LITTLE_ENDIAN
116 config MACH_DECSTATION
123 select CPU_DADDI_WORKAROUNDS if 64BIT
124 select CPU_R4000_WORKAROUNDS if 64BIT
125 select CPU_R4400_WORKAROUNDS if 64BIT
126 select DMA_NONCOHERENT
129 select SYS_HAS_CPU_R3000
130 select SYS_HAS_CPU_R4X00
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
133 select SYS_SUPPORTS_LITTLE_ENDIAN
134 select SYS_SUPPORTS_128HZ
135 select SYS_SUPPORTS_256HZ
136 select SYS_SUPPORTS_1024HZ
138 This enables support for DEC's MIPS based workstations. For details
139 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
140 DECstation porting pages on <http://decstation.unix-ag.org/>.
142 If you have one of the following DECstation Models you definitely
143 want to choose R4xx0 for the CPU Type:
150 otherwise choose R3000.
153 bool "Jazz family of machines"
156 select ARCH_MAY_HAVE_PC_FDC
159 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
160 select GENERIC_ISA_DMA
165 select SYS_HAS_CPU_R4X00
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
168 select SYS_SUPPORTS_100HZ
170 This a family of machines based on the MIPS R4030 chipset which was
171 used by several vendors to build RISC/os and Windows NT workstations.
172 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
173 Olivetti M700-10 workstations.
176 bool "LASAT Networks platforms"
179 select DMA_NONCOHERENT
180 select SYS_HAS_EARLY_PRINTK
183 select PCI_GT64XXX_PCI0
185 select R5000_CPU_SCACHE
186 select SYS_HAS_CPU_R5000
187 select SYS_SUPPORTS_32BIT_KERNEL
188 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
189 select SYS_SUPPORTS_LITTLE_ENDIAN
192 bool "Loongson family of machines"
193 select SYS_SUPPORTS_ZBOOT
195 This enables the support of Loongson family of machines.
197 Loongson is a family of general-purpose MIPS-compatible CPUs.
198 developed at Institute of Computing Technology (ICT),
199 Chinese Academy of Sciences (CAS) in the People's Republic
200 of China. The chief architect is Professor Weiwu Hu.
203 bool "MIPS Malta board"
204 select ARCH_MAY_HAVE_PC_FDC
209 select DMA_NONCOHERENT
210 select GENERIC_ISA_DMA
216 select MIPS_BOARDS_GEN
218 select MIPS_CPU_SCACHE
219 select PCI_GT64XXX_PCI0
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_HAS_CPU_MIPS64_R1
225 select SYS_HAS_CPU_NEVADA
226 select SYS_HAS_CPU_RM7000
227 select SYS_HAS_EARLY_PRINTK
228 select SYS_SUPPORTS_32BIT_KERNEL
229 select SYS_SUPPORTS_64BIT_KERNEL
230 select SYS_SUPPORTS_BIG_ENDIAN
231 select SYS_SUPPORTS_LITTLE_ENDIAN
232 select SYS_SUPPORTS_MIPS_CMP
233 select SYS_SUPPORTS_MULTITHREADING
234 select SYS_SUPPORTS_SMARTMIPS
235 select SYS_SUPPORTS_ZBOOT
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.
341 select CPU_MIPSR2_IRQ_VI
342 select CPU_MIPSR2_IRQ_EI
344 select DMA_NONCOHERENT
346 select SYS_HAS_EARLY_PRINTK
347 select SYS_HAS_CPU_MIPS32_R2
348 select SYS_SUPPORTS_32BIT_KERNEL
349 select SYS_SUPPORTS_BIG_ENDIAN
350 select SYS_SUPPORTS_HIGHMEM
351 select USB_OHCI_LITTLE_ENDIAN
353 This enables support for the Cisco PowerTV Platform.
356 bool "SGI IP22 (Indy/Indigo2)"
362 select DEFAULT_SGI_PARTITION
363 select DMA_NONCOHERENT
367 select IP22_CPU_SCACHE
369 select GENERIC_ISA_DMA_SUPPORT_BROKEN
371 select SGI_HAS_INDYDOG
377 select SYS_HAS_CPU_R4X00
378 select SYS_HAS_CPU_R5000
380 # Disable EARLY_PRINTK for now since it leads to overwritten prom
381 # memory during early boot on some machines.
383 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
384 # for a more details discussion
386 # select SYS_HAS_EARLY_PRINTK
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_64BIT_KERNEL
389 select SYS_SUPPORTS_BIG_ENDIAN
391 This are the SGI Indy, Challenge S and Indigo2, as well as certain
392 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
393 that runs on these, say Y here.
396 bool "SGI IP27 (Origin200/2000)"
400 select DEFAULT_SGI_PARTITION
402 select SYS_HAS_EARLY_PRINTK
404 select NR_CPUS_DEFAULT_64
405 select SYS_HAS_CPU_R10000
406 select SYS_SUPPORTS_64BIT_KERNEL
407 select SYS_SUPPORTS_BIG_ENDIAN
408 select SYS_SUPPORTS_NUMA
409 select SYS_SUPPORTS_SMP
411 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
412 workstations. To compile a Linux kernel that runs on these, say Y
416 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
417 depends on EXPERIMENTAL
423 select DEFAULT_SGI_PARTITION
424 select DMA_NONCOHERENT
425 select GENERIC_ISA_DMA_SUPPORT_BROKEN
431 select SGI_HAS_INDYDOG
437 select SYS_HAS_CPU_R10000
439 # Disable EARLY_PRINTK for now since it leads to overwritten prom
440 # memory during early boot on some machines.
442 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
443 # for a more details discussion
445 # select SYS_HAS_EARLY_PRINTK
446 select SYS_SUPPORTS_64BIT_KERNEL
447 select SYS_SUPPORTS_BIG_ENDIAN
449 This is the SGI Indigo2 with R10000 processor. To compile a Linux
450 kernel that runs on these, say Y here.
459 select DMA_NONCOHERENT
462 select R5000_CPU_SCACHE
463 select RM7000_CPU_SCACHE
464 select SYS_HAS_CPU_R5000
465 select SYS_HAS_CPU_R10000 if BROKEN
466 select SYS_HAS_CPU_RM7000
467 select SYS_HAS_CPU_NEVADA
468 select SYS_SUPPORTS_64BIT_KERNEL
469 select SYS_SUPPORTS_BIG_ENDIAN
471 If you want this kernel to run on SGI O2 workstation, say Y here.
474 bool "Sibyte BCM91120C-CRhine"
475 depends on EXPERIMENTAL
478 select SIBYTE_BCM1120
480 select SYS_HAS_CPU_SB1
481 select SYS_SUPPORTS_BIG_ENDIAN
482 select SYS_SUPPORTS_LITTLE_ENDIAN
485 bool "Sibyte BCM91120x-Carmel"
486 depends on EXPERIMENTAL
489 select SIBYTE_BCM1120
491 select SYS_HAS_CPU_SB1
492 select SYS_SUPPORTS_BIG_ENDIAN
493 select SYS_SUPPORTS_LITTLE_ENDIAN
496 bool "Sibyte BCM91125C-CRhone"
497 depends on EXPERIMENTAL
500 select SIBYTE_BCM1125
502 select SYS_HAS_CPU_SB1
503 select SYS_SUPPORTS_BIG_ENDIAN
504 select SYS_SUPPORTS_HIGHMEM
505 select SYS_SUPPORTS_LITTLE_ENDIAN
508 bool "Sibyte BCM91125E-Rhone"
509 depends on EXPERIMENTAL
512 select SIBYTE_BCM1125H
514 select SYS_HAS_CPU_SB1
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_LITTLE_ENDIAN
519 bool "Sibyte BCM91250A-SWARM"
522 select HAVE_PATA_PLATFORM
523 select NR_CPUS_DEFAULT_2
526 select SYS_HAS_CPU_SB1
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_HIGHMEM
529 select SYS_SUPPORTS_LITTLE_ENDIAN
530 select ZONE_DMA32 if 64BIT
532 config SIBYTE_LITTLESUR
533 bool "Sibyte BCM91250C2-LittleSur"
534 depends on EXPERIMENTAL
537 select HAVE_PATA_PLATFORM
538 select NR_CPUS_DEFAULT_2
541 select SYS_HAS_CPU_SB1
542 select SYS_SUPPORTS_BIG_ENDIAN
543 select SYS_SUPPORTS_HIGHMEM
544 select SYS_SUPPORTS_LITTLE_ENDIAN
546 config SIBYTE_SENTOSA
547 bool "Sibyte BCM91250E-Sentosa"
548 depends on EXPERIMENTAL
551 select NR_CPUS_DEFAULT_2
554 select SYS_HAS_CPU_SB1
555 select SYS_SUPPORTS_BIG_ENDIAN
556 select SYS_SUPPORTS_LITTLE_ENDIAN
559 bool "Sibyte BCM91480B-BigSur"
562 select NR_CPUS_DEFAULT_4
563 select SIBYTE_BCM1x80
565 select SYS_HAS_CPU_SB1
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select SYS_SUPPORTS_HIGHMEM
568 select SYS_SUPPORTS_LITTLE_ENDIAN
569 select ZONE_DMA32 if 64BIT
572 bool "SNI RM200/300/400"
573 select ARC if CPU_LITTLE_ENDIAN
574 select ARC32 if CPU_LITTLE_ENDIAN
575 select SNIPROM if CPU_BIG_ENDIAN
576 select ARCH_MAY_HAVE_PC_FDC
580 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
581 select DMA_NONCOHERENT
582 select GENERIC_ISA_DMA
589 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
590 select SYS_HAS_CPU_R4X00
591 select SYS_HAS_CPU_R5000
592 select SYS_HAS_CPU_R10000
593 select R5000_CPU_SCACHE
594 select SYS_HAS_EARLY_PRINTK
595 select SYS_SUPPORTS_32BIT_KERNEL
596 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_HIGHMEM
599 select SYS_SUPPORTS_LITTLE_ENDIAN
601 The SNI RM200/300/400 are MIPS-based machines manufactured by
602 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
603 Technology and now in turn merged with Fujitsu. Say Y here to
604 support this machine type.
607 bool "Toshiba TX39 series based machines"
610 bool "Toshiba TX49 series based machines"
612 config MIKROTIK_RB532
613 bool "Mikrotik RB532 boards"
616 select DMA_NONCOHERENT
619 select SYS_HAS_CPU_MIPS32_R1
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_LITTLE_ENDIAN
624 select ARCH_REQUIRE_GPIOLIB
626 Support the Mikrotik(tm) RouterBoard 532 series,
627 based on the IDT RC32434 SoC.
630 bool "Wind River PPMC board"
635 select DMA_NONCOHERENT
637 select PCI_GT64XXX_PCI0
639 select SYS_HAS_CPU_MIPS32_R1
640 select SYS_HAS_CPU_MIPS32_R2
641 select SYS_HAS_CPU_MIPS64_R1
642 select SYS_HAS_CPU_NEVADA
643 select SYS_HAS_CPU_RM7000
644 select SYS_SUPPORTS_32BIT_KERNEL
645 select SYS_SUPPORTS_64BIT_KERNEL
646 select SYS_SUPPORTS_BIG_ENDIAN
647 select SYS_SUPPORTS_LITTLE_ENDIAN
649 This enables support for the Wind River MIPS32 4KC PPMC evaluation
650 board, which is based on GT64120 bridge chip.
652 config CAVIUM_OCTEON_SIMULATOR
653 bool "Cavium Networks Octeon Simulator"
655 select 64BIT_PHYS_ADDR
657 select SYS_SUPPORTS_64BIT_KERNEL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_HIGHMEM
660 select SYS_SUPPORTS_HOTPLUG_CPU
661 select SYS_HAS_CPU_CAVIUM_OCTEON
663 The Octeon simulator is software performance model of the Cavium
664 Octeon Processor. It supports simulating Octeon processors on x86
667 config CAVIUM_OCTEON_REFERENCE_BOARD
668 bool "Cavium Networks Octeon reference board"
670 select 64BIT_PHYS_ADDR
672 select SYS_SUPPORTS_64BIT_KERNEL
673 select SYS_SUPPORTS_BIG_ENDIAN
674 select SYS_SUPPORTS_HIGHMEM
675 select SYS_SUPPORTS_HOTPLUG_CPU
676 select SYS_HAS_EARLY_PRINTK
677 select SYS_HAS_CPU_CAVIUM_OCTEON
680 select ARCH_SUPPORTS_MSI
682 This option supports all of the Octeon reference boards from Cavium
683 Networks. It builds a kernel that dynamically determines the Octeon
684 CPU type and supports all known board reference implementations.
685 Some of the supported boards are:
692 Say Y here for most Octeon reference boards.
696 source "arch/mips/alchemy/Kconfig"
697 source "arch/mips/bcm63xx/Kconfig"
698 source "arch/mips/jazz/Kconfig"
699 source "arch/mips/lasat/Kconfig"
700 source "arch/mips/pmc-sierra/Kconfig"
701 source "arch/mips/powertv/Kconfig"
702 source "arch/mips/sgi-ip27/Kconfig"
703 source "arch/mips/sibyte/Kconfig"
704 source "arch/mips/txx9/Kconfig"
705 source "arch/mips/vr41xx/Kconfig"
706 source "arch/mips/cavium-octeon/Kconfig"
707 source "arch/mips/loongson/Kconfig"
711 config RWSEM_GENERIC_SPINLOCK
715 config RWSEM_XCHGADD_ALGORITHM
718 config ARCH_HAS_ILOG2_U32
722 config ARCH_HAS_ILOG2_U64
726 config ARCH_SUPPORTS_OPROFILE
728 default y if !MIPS_MT_SMTC
730 config GENERIC_FIND_NEXT_BIT
734 config GENERIC_HWEIGHT
738 config GENERIC_CALIBRATE_DELAY
742 config GENERIC_CLOCKEVENTS
750 config GENERIC_CMOS_UPDATE
754 config SCHED_OMIT_FRAME_POINTER
758 config GENERIC_HARDIRQS_NO__DO_IRQ
762 # Select some configuration options automatically based on user selections.
767 config ARCH_MAY_HAVE_PC_FDC
816 select ARCH_REQUIRE_GPIOLIB
825 config DMA_NONCOHERENT
827 select NEED_DMA_MAP_STATE
829 config NEED_DMA_MAP_STATE
832 config SYS_HAS_EARLY_PRINTK
836 bool "Support for hot-pluggable CPUs"
837 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
839 Say Y here to allow turning CPUs off and on. CPUs can be
840 controlled through /sys/devices/system/cpu.
841 (Note: power management support will enable this option
842 automatically on SMP systems. )
843 Say N if you want to disable CPU hotplug.
845 config SYS_SUPPORTS_HOTPLUG_CPU
860 config MIPS_DISABLE_OBSOLETE_IDE
869 config GENERIC_ISA_DMA
871 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
873 config GENERIC_ISA_DMA_SUPPORT_BROKEN
875 select GENERIC_ISA_DMA
881 # Endianess selection. Sufficiently obscure so many users don't know what to
882 # answer,so we try hard to limit the available choices. Also the use of a
883 # choice statement should be more obvious to the user.
886 prompt "Endianess selection"
888 Some MIPS machines can be configured for either little or big endian
889 byte order. These modes require different kernels and a different
890 Linux distribution. In general there is one preferred byteorder for a
891 particular system but some systems are just as commonly used in the
892 one or the other endianness.
894 config CPU_BIG_ENDIAN
896 depends on SYS_SUPPORTS_BIG_ENDIAN
898 config CPU_LITTLE_ENDIAN
900 depends on SYS_SUPPORTS_LITTLE_ENDIAN
905 config SYS_SUPPORTS_APM_EMULATION
908 config SYS_SUPPORTS_BIG_ENDIAN
911 config SYS_SUPPORTS_LITTLE_ENDIAN
914 config SYS_SUPPORTS_HUGETLBFS
916 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
943 config IRQ_CPU_OCTEON
946 config MIPS_BOARDS_GEN
949 config PCI_GT64XXX_PCI0
952 config NO_EXCEPT_FILL
963 select DMA_NONCOHERENT
966 select SYS_HAS_CPU_R5500
967 select SYS_SUPPORTS_32BIT_KERNEL
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select SYS_SUPPORTS_BIG_ENDIAN
976 select DMA_NONCOHERENT
977 select SYS_HAS_CPU_MIPS32_R2
978 select SYS_SUPPORTS_32BIT_KERNEL
979 select SYS_SUPPORTS_LITTLE_ENDIAN
980 select SYS_SUPPORTS_BIG_ENDIAN
982 select CPU_MIPSR2_IRQ_VI
994 select DMA_NONCOHERENT
996 select SYS_HAS_CPU_MIPS32_R1
997 select SYS_HAS_EARLY_PRINTK
998 select SYS_SUPPORTS_32BIT_KERNEL
1001 config SWAP_IO_SPACE
1004 config SERIAL_RM9000
1007 config SGI_HAS_INDYDOG
1019 config SGI_HAS_ZILOG
1022 config SGI_HAS_I8042
1025 config DEFAULT_SGI_PARTITION
1037 config MIPS_L1_CACHE_SHIFT
1039 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1040 default "6" if MIPS_CPU_SCACHE
1041 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1044 config HAVE_STD_PC_SERIAL_PORT
1048 bool "ARC console support"
1049 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1053 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1058 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1067 menu "CPU selection"
1073 config CPU_LOONGSON2E
1075 depends on SYS_HAS_CPU_LOONGSON2E
1076 select CPU_LOONGSON2
1078 The Loongson 2E processor implements the MIPS III instruction set
1079 with many extensions.
1081 It has an internal FPGA northbridge, which is compatiable to
1084 config CPU_LOONGSON2F
1086 depends on SYS_HAS_CPU_LOONGSON2F
1087 select CPU_LOONGSON2
1089 select ARCH_REQUIRE_GPIOLIB
1091 The Loongson 2F processor implements the MIPS III instruction set
1092 with many extensions.
1094 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1095 have a similar programming interface with FPGA northbridge used in
1098 config CPU_MIPS32_R1
1099 bool "MIPS32 Release 1"
1100 depends on SYS_HAS_CPU_MIPS32_R1
1101 select CPU_HAS_PREFETCH
1102 select CPU_SUPPORTS_32BIT_KERNEL
1103 select CPU_SUPPORTS_HIGHMEM
1105 Choose this option to build a kernel for release 1 or later of the
1106 MIPS32 architecture. Most modern embedded systems with a 32-bit
1107 MIPS processor are based on a MIPS32 processor. If you know the
1108 specific type of processor in your system, choose those that one
1109 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1110 Release 2 of the MIPS32 architecture is available since several
1111 years so chances are you even have a MIPS32 Release 2 processor
1112 in which case you should choose CPU_MIPS32_R2 instead for better
1115 config CPU_MIPS32_R2
1116 bool "MIPS32 Release 2"
1117 depends on SYS_HAS_CPU_MIPS32_R2
1118 select CPU_HAS_PREFETCH
1119 select CPU_SUPPORTS_32BIT_KERNEL
1120 select CPU_SUPPORTS_HIGHMEM
1122 Choose this option to build a kernel for release 2 or later of the
1123 MIPS32 architecture. Most modern embedded systems with a 32-bit
1124 MIPS processor are based on a MIPS32 processor. If you know the
1125 specific type of processor in your system, choose those that one
1126 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1128 config CPU_MIPS64_R1
1129 bool "MIPS64 Release 1"
1130 depends on SYS_HAS_CPU_MIPS64_R1
1131 select CPU_HAS_PREFETCH
1132 select CPU_SUPPORTS_32BIT_KERNEL
1133 select CPU_SUPPORTS_64BIT_KERNEL
1134 select CPU_SUPPORTS_HIGHMEM
1135 select CPU_SUPPORTS_HUGEPAGES
1137 Choose this option to build a kernel for release 1 or later of the
1138 MIPS64 architecture. Many modern embedded systems with a 64-bit
1139 MIPS processor are based on a MIPS64 processor. If you know the
1140 specific type of processor in your system, choose those that one
1141 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1142 Release 2 of the MIPS64 architecture is available since several
1143 years so chances are you even have a MIPS64 Release 2 processor
1144 in which case you should choose CPU_MIPS64_R2 instead for better
1147 config CPU_MIPS64_R2
1148 bool "MIPS64 Release 2"
1149 depends on SYS_HAS_CPU_MIPS64_R2
1150 select CPU_HAS_PREFETCH
1151 select CPU_SUPPORTS_32BIT_KERNEL
1152 select CPU_SUPPORTS_64BIT_KERNEL
1153 select CPU_SUPPORTS_HIGHMEM
1154 select CPU_SUPPORTS_HUGEPAGES
1156 Choose this option to build a kernel for release 2 or later of the
1157 MIPS64 architecture. Many modern embedded systems with a 64-bit
1158 MIPS processor are based on a MIPS64 processor. If you know the
1159 specific type of processor in your system, choose those that one
1160 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1164 depends on SYS_HAS_CPU_R3000
1166 select CPU_SUPPORTS_32BIT_KERNEL
1167 select CPU_SUPPORTS_HIGHMEM
1169 Please make sure to pick the right CPU type. Linux/MIPS is not
1170 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1171 *not* work on R4000 machines and vice versa. However, since most
1172 of the supported machines have an R4000 (or similar) CPU, R4x00
1173 might be a safe bet. If the resulting kernel does not work,
1174 try to recompile with R3000.
1178 depends on SYS_HAS_CPU_TX39XX
1179 select CPU_SUPPORTS_32BIT_KERNEL
1183 depends on SYS_HAS_CPU_VR41XX
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_64BIT_KERNEL
1187 The options selects support for the NEC VR4100 series of processors.
1188 Only choose this option if you have one of these processors as a
1189 kernel built with this option will not run on any other type of
1190 processor or vice versa.
1194 depends on SYS_HAS_CPU_R4300
1195 select CPU_SUPPORTS_32BIT_KERNEL
1196 select CPU_SUPPORTS_64BIT_KERNEL
1198 MIPS Technologies R4300-series processors.
1202 depends on SYS_HAS_CPU_R4X00
1203 select CPU_SUPPORTS_32BIT_KERNEL
1204 select CPU_SUPPORTS_64BIT_KERNEL
1206 MIPS Technologies R4000-series processors other than 4300, including
1207 the R4000, R4400, R4600, and 4700.
1211 depends on SYS_HAS_CPU_TX49XX
1212 select CPU_HAS_PREFETCH
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_64BIT_KERNEL
1218 depends on SYS_HAS_CPU_R5000
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1222 MIPS Technologies R5000-series processors other than the Nevada.
1226 depends on SYS_HAS_CPU_R5432
1227 select CPU_SUPPORTS_32BIT_KERNEL
1228 select CPU_SUPPORTS_64BIT_KERNEL
1232 depends on SYS_HAS_CPU_R5500
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1235 select CPU_SUPPORTS_HUGEPAGES
1237 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1242 depends on EXPERIMENTAL
1243 depends on SYS_HAS_CPU_R6000
1244 select CPU_SUPPORTS_32BIT_KERNEL
1246 MIPS Technologies R6000 and R6000A series processors. Note these
1247 processors are extremely rare and the support for them is incomplete.
1251 depends on SYS_HAS_CPU_NEVADA
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1255 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1259 depends on EXPERIMENTAL
1260 depends on SYS_HAS_CPU_R8000
1261 select CPU_HAS_PREFETCH
1262 select CPU_SUPPORTS_64BIT_KERNEL
1264 MIPS Technologies R8000 processors. Note these processors are
1265 uncommon and the support for them is incomplete.
1269 depends on SYS_HAS_CPU_R10000
1270 select CPU_HAS_PREFETCH
1271 select CPU_SUPPORTS_32BIT_KERNEL
1272 select CPU_SUPPORTS_64BIT_KERNEL
1273 select CPU_SUPPORTS_HIGHMEM
1275 MIPS Technologies R10000-series processors.
1279 depends on SYS_HAS_CPU_RM7000
1280 select CPU_HAS_PREFETCH
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_64BIT_KERNEL
1283 select CPU_SUPPORTS_HIGHMEM
1287 depends on SYS_HAS_CPU_RM9000
1288 select CPU_HAS_PREFETCH
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_64BIT_KERNEL
1291 select CPU_SUPPORTS_HIGHMEM
1292 select WEAK_ORDERING
1296 depends on SYS_HAS_CPU_SB1
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1299 select CPU_SUPPORTS_HIGHMEM
1300 select WEAK_ORDERING
1302 config CPU_CAVIUM_OCTEON
1303 bool "Cavium Octeon processor"
1304 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1306 select IRQ_CPU_OCTEON
1307 select CPU_HAS_PREFETCH
1308 select CPU_SUPPORTS_64BIT_KERNEL
1309 select SYS_SUPPORTS_SMP
1310 select NR_CPUS_DEFAULT_16
1311 select WEAK_ORDERING
1312 select CPU_SUPPORTS_HIGHMEM
1313 select CPU_SUPPORTS_HUGEPAGES
1315 The Cavium Octeon processor is a highly integrated chip containing
1316 many ethernet hardware widgets for networking tasks. The processor
1317 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1318 Full details can be found at http://www.caviumnetworks.com.
1323 config CPU_NOP_WORKAROUNDS
1326 config CPU_JUMP_WORKAROUNDS
1329 config CPU_LOONGSON2F_WORKAROUNDS
1330 bool "Loongson 2F Workarounds"
1332 select CPU_NOP_WORKAROUNDS
1333 select CPU_JUMP_WORKAROUNDS
1335 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1336 require workarounds. Without workarounds the system may hang
1337 unexpectedly. For more information please refer to the gas
1338 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1340 Loongson 2F03 and later have fixed these issues and no workarounds
1341 are needed. The workarounds have no significant side effect on them
1342 but may decrease the performance of the system so this option should
1343 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1346 If unsure, please say Y.
1347 endif # CPU_LOONGSON2F
1349 config SYS_SUPPORTS_ZBOOT
1351 select HAVE_KERNEL_GZIP
1352 select HAVE_KERNEL_BZIP2
1353 select HAVE_KERNEL_LZMA
1354 select HAVE_KERNEL_LZO
1356 config SYS_SUPPORTS_ZBOOT_UART16550
1358 select SYS_SUPPORTS_ZBOOT
1360 config CPU_LOONGSON2
1362 select CPU_SUPPORTS_32BIT_KERNEL
1363 select CPU_SUPPORTS_64BIT_KERNEL
1364 select CPU_SUPPORTS_HIGHMEM
1366 config SYS_HAS_CPU_LOONGSON2E
1369 config SYS_HAS_CPU_LOONGSON2F
1371 select CPU_SUPPORTS_CPUFREQ
1372 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1373 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1375 config SYS_HAS_CPU_MIPS32_R1
1378 config SYS_HAS_CPU_MIPS32_R2
1381 config SYS_HAS_CPU_MIPS64_R1
1384 config SYS_HAS_CPU_MIPS64_R2
1387 config SYS_HAS_CPU_R3000
1390 config SYS_HAS_CPU_TX39XX
1393 config SYS_HAS_CPU_VR41XX
1396 config SYS_HAS_CPU_R4300
1399 config SYS_HAS_CPU_R4X00
1402 config SYS_HAS_CPU_TX49XX
1405 config SYS_HAS_CPU_R5000
1408 config SYS_HAS_CPU_R5432
1411 config SYS_HAS_CPU_R5500
1414 config SYS_HAS_CPU_R6000
1417 config SYS_HAS_CPU_NEVADA
1420 config SYS_HAS_CPU_R8000
1423 config SYS_HAS_CPU_R10000
1426 config SYS_HAS_CPU_RM7000
1429 config SYS_HAS_CPU_RM9000
1432 config SYS_HAS_CPU_SB1
1435 config SYS_HAS_CPU_CAVIUM_OCTEON
1439 # CPU may reorder R->R, R->W, W->R, W->W
1440 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1442 config WEAK_ORDERING
1446 # CPU may reorder reads and writes beyond LL/SC
1447 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1449 config WEAK_REORDERING_BEYOND_LLSC
1454 # These two indicate any level of the MIPS32 and MIPS64 architecture
1458 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1462 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1465 # These two indicate the revision of the architecture, either Release 1 or Release 2
1469 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1473 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1475 config SYS_SUPPORTS_32BIT_KERNEL
1477 config SYS_SUPPORTS_64BIT_KERNEL
1479 config CPU_SUPPORTS_32BIT_KERNEL
1481 config CPU_SUPPORTS_64BIT_KERNEL
1483 config CPU_SUPPORTS_CPUFREQ
1485 config CPU_SUPPORTS_ADDRWINCFG
1487 config CPU_SUPPORTS_HUGEPAGES
1489 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1491 config MIPS_PGD_C0_CONTEXT
1493 default y if 64BIT && CPU_MIPSR2
1496 # Set to y for ptrace access to watch registers.
1498 config HARDWARE_WATCHPOINTS
1500 default y if CPU_MIPSR1 || CPU_MIPSR2
1506 prompt "Kernel code model"
1508 You should only select this option if you have a workload that
1509 actually benefits from 64-bit processing or if your machine has
1510 large memory. You will only be presented a single option in this
1511 menu if your system does not support both 32-bit and 64-bit kernels.
1514 bool "32-bit kernel"
1515 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1518 Select this option if you want to build a 32-bit kernel.
1520 bool "64-bit kernel"
1521 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1522 select HAVE_SYSCALL_WRAPPERS
1524 Select this option if you want to build a 64-bit kernel.
1529 prompt "Kernel page size"
1530 default PAGE_SIZE_4KB
1532 config PAGE_SIZE_4KB
1534 depends on !CPU_LOONGSON2
1536 This option select the standard 4kB Linux page size. On some
1537 R3000-family processors this is the only available page size. Using
1538 4kB page size will minimize memory consumption and is therefore
1539 recommended for low memory systems.
1541 config PAGE_SIZE_8KB
1543 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1545 Using 8kB page size will result in higher performance kernel at
1546 the price of higher memory consumption. This option is available
1547 only on R8000 and cnMIPS processors. Note that you will need a
1548 suitable Linux distribution to support this.
1550 config PAGE_SIZE_16KB
1552 depends on !CPU_R3000 && !CPU_TX39XX
1554 Using 16kB page size will result in higher performance kernel at
1555 the price of higher memory consumption. This option is available on
1556 all non-R3000 family processors. Note that you will need a suitable
1557 Linux distribution to support this.
1559 config PAGE_SIZE_32KB
1561 depends on CPU_CAVIUM_OCTEON
1563 Using 32kB page size will result in higher performance kernel at
1564 the price of higher memory consumption. This option is available
1565 only on cnMIPS cores. Note that you will need a suitable Linux
1566 distribution to support this.
1568 config PAGE_SIZE_64KB
1570 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1572 Using 64kB page size will result in higher performance kernel at
1573 the price of higher memory consumption. This option is available on
1574 all non-R3000 family processor. Not that at the time of this
1575 writing this option is still high experimental.
1582 config IP22_CPU_SCACHE
1587 # Support for a MIPS32 / MIPS64 style S-caches
1589 config MIPS_CPU_SCACHE
1593 config R5000_CPU_SCACHE
1597 config RM7000_CPU_SCACHE
1601 config SIBYTE_DMA_PAGEOPS
1602 bool "Use DMA to clear/copy pages"
1605 Instead of using the CPU to zero and copy pages, use a Data Mover
1606 channel. These DMA channels are otherwise unused by the standard
1607 SiByte Linux port. Seems to give a small performance benefit.
1609 config CPU_HAS_PREFETCH
1613 prompt "MIPS MT options"
1615 config MIPS_MT_DISABLED
1616 bool "Disable multithreading support."
1618 Use this option if your workload can't take advantage of
1619 MIPS hardware multithreading support. On systems that don't have
1620 the option of an MT-enabled processor this option will be the only
1621 option in this menu.
1624 bool "Use 1 TC on each available VPE for SMP"
1625 depends on SYS_SUPPORTS_MULTITHREADING
1626 select CPU_MIPSR2_IRQ_VI
1627 select CPU_MIPSR2_IRQ_EI
1629 select NR_CPUS_DEFAULT_2
1631 select SYS_SUPPORTS_SCHED_SMT if SMP
1632 select SYS_SUPPORTS_SMP
1635 This is a kernel model which is also known a VSMP or lately
1636 has been marketesed into SMVP.
1639 bool "SMTC: Use all TCs on all VPEs for SMP"
1640 depends on CPU_MIPS32_R2
1641 #depends on CPU_MIPS64_R2 # once there is hardware ...
1642 depends on SYS_SUPPORTS_MULTITHREADING
1643 select CPU_MIPSR2_IRQ_VI
1644 select CPU_MIPSR2_IRQ_EI
1646 select NR_CPUS_DEFAULT_8
1648 select SYS_SUPPORTS_SMP
1651 This is a kernel model which is known a SMTC or lately has been
1652 marketesed into SMVP.
1660 bool "SMT (multithreading) scheduler support"
1661 depends on SYS_SUPPORTS_SCHED_SMT
1664 SMT scheduler support improves the CPU scheduler's decision making
1665 when dealing with MIPS MT enabled cores at a cost of slightly
1666 increased overhead in some places. If unsure say N here.
1668 config SYS_SUPPORTS_SCHED_SMT
1672 config SYS_SUPPORTS_MULTITHREADING
1675 config MIPS_MT_FPAFF
1676 bool "Dynamic FPU affinity for FP-intensive threads"
1678 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1680 config MIPS_VPE_LOADER
1681 bool "VPE loader support."
1682 depends on SYS_SUPPORTS_MULTITHREADING
1683 select CPU_MIPSR2_IRQ_VI
1684 select CPU_MIPSR2_IRQ_EI
1687 Includes a loader for loading an elf relocatable object
1688 onto another VPE and running it.
1690 config MIPS_MT_SMTC_IM_BACKSTOP
1691 bool "Use per-TC register bits as backstop for inhibited IM bits"
1692 depends on MIPS_MT_SMTC
1695 To support multiple TC microthreads acting as "CPUs" within
1696 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1697 during interrupt handling. To support legacy drivers and interrupt
1698 controller management code, SMTC has a "backstop" to track and
1699 if necessary restore the interrupt mask. This has some performance
1700 impact on interrupt service overhead.
1702 config MIPS_MT_SMTC_IRQAFF
1703 bool "Support IRQ affinity API"
1704 depends on MIPS_MT_SMTC
1707 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1708 for SMTC Linux kernel. Requires platform support, of which
1709 an example can be found in the MIPS kernel i8259 and Malta
1710 platform code. Adds some overhead to interrupt dispatch, and
1711 should be used only if you know what you are doing.
1713 config MIPS_VPE_LOADER_TOM
1714 bool "Load VPE program into memory hidden from linux"
1715 depends on MIPS_VPE_LOADER
1718 The loader can use memory that is present but has been hidden from
1719 Linux using the kernel command line option "mem=xxMB". It's up to
1720 you to ensure the amount you put in the option and the space your
1721 program requires is less or equal to the amount physically present.
1723 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1724 config MIPS_VPE_APSP_API
1725 bool "Enable support for AP/SP API (RTLX)"
1726 depends on MIPS_VPE_LOADER
1729 config MIPS_APSP_KSPD
1731 depends on MIPS_VPE_APSP_API
1734 KSPD is a kernel daemon that accepts syscall requests from the SP
1735 side, actions them and returns the results. It also handles the
1736 "exit" syscall notifying other kernel modules the SP program is
1737 exiting. You probably want to say yes here.
1740 bool "MIPS CMP framework support"
1741 depends on SYS_SUPPORTS_MIPS_CMP
1743 select SYS_SUPPORTS_SMP
1744 select SYS_SUPPORTS_SCHED_SMT if SMP
1745 select WEAK_ORDERING
1748 This is a placeholder option for the GCMP work. It will need to
1749 be handled differently...
1751 config SB1_PASS_1_WORKAROUNDS
1753 depends on CPU_SB1_PASS_1
1756 config SB1_PASS_2_WORKAROUNDS
1758 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1761 config SB1_PASS_2_1_WORKAROUNDS
1763 depends on CPU_SB1 && CPU_SB1_PASS_2
1766 config 64BIT_PHYS_ADDR
1769 config ARCH_PHYS_ADDR_T_64BIT
1770 def_bool 64BIT_PHYS_ADDR
1772 config CPU_HAS_SMARTMIPS
1773 depends on SYS_SUPPORTS_SMARTMIPS
1774 bool "Support for the SmartMIPS ASE"
1776 SmartMIPS is a extension of the MIPS32 architecture aimed at
1777 increased security at both hardware and software level for
1778 smartcards. Enabling this option will allow proper use of the
1779 SmartMIPS instructions by Linux applications. However a kernel with
1780 this option will not work on a MIPS core without SmartMIPS core. If
1781 you don't know you probably don't have SmartMIPS and should say N
1788 # Vectored interrupt mode is an R2 feature
1790 config CPU_MIPSR2_IRQ_VI
1794 # Extended interrupt mode is an R2 feature
1796 config CPU_MIPSR2_IRQ_EI
1801 depends on !CPU_R3000
1804 config GENERIC_CLOCKEVENTS_BROADCAST
1810 config CPU_DADDI_WORKAROUNDS
1813 config CPU_R4000_WORKAROUNDS
1815 select CPU_R4400_WORKAROUNDS
1817 config CPU_R4400_WORKAROUNDS
1821 # Use the generic interrupt handling code in kernel/irq/:
1823 config GENERIC_HARDIRQS
1827 config GENERIC_IRQ_PROBE
1835 # - Highmem only makes sense for the 32-bit kernel.
1836 # - The current highmem code will only work properly on physically indexed
1837 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1838 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1839 # moment we protect the user and offer the highmem option only on machines
1840 # where it's known to be safe. This will not offer highmem on a few systems
1841 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1842 # indexed CPUs but we're playing safe.
1843 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1844 # know they might have memory configurations that could make use of highmem
1848 bool "High Memory Support"
1849 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1851 config CPU_SUPPORTS_HIGHMEM
1854 config SYS_SUPPORTS_HIGHMEM
1857 config SYS_SUPPORTS_SMARTMIPS
1860 config ARCH_FLATMEM_ENABLE
1862 depends on !NUMA && !CPU_LOONGSON2
1864 config ARCH_DISCONTIGMEM_ENABLE
1866 default y if SGI_IP27
1868 Say Y to support efficient handling of discontiguous physical memory,
1869 for architectures which are either NUMA (Non-Uniform Memory Access)
1870 or have huge holes in the physical address space for other reasons.
1871 See <file:Documentation/vm/numa> for more.
1873 config ARCH_POPULATES_NODE_MAP
1876 config ARCH_SPARSEMEM_ENABLE
1878 select SPARSEMEM_STATIC
1882 depends on SYS_SUPPORTS_NUMA
1884 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1885 Access). This option improves performance on systems with more
1886 than two nodes; on two node systems it is generally better to
1887 leave it disabled; on single node systems disable this option
1890 config SYS_SUPPORTS_NUMA
1896 depends on NEED_MULTIPLE_NODES
1901 bool "Multi-Processing support"
1902 depends on SYS_SUPPORTS_SMP
1904 select USE_GENERIC_SMP_HELPERS
1906 This enables support for systems with more than one CPU. If you have
1907 a system with only one CPU, like most personal computers, say N. If
1908 you have a system with more than one CPU, say Y.
1910 If you say N here, the kernel will run on single and multiprocessor
1911 machines, but will use only one CPU of a multiprocessor machine. If
1912 you say Y here, the kernel will run on many, but not all,
1913 singleprocessor machines. On a singleprocessor machine, the kernel
1914 will run faster if you say N here.
1916 People using multiprocessor machines who say Y here should also say
1917 Y to "Enhanced Real Time Clock Support", below.
1919 See also the SMP-HOWTO available at
1920 <http://www.tldp.org/docs.html#howto>.
1922 If you don't know what to do here, say N.
1927 config SYS_SUPPORTS_MIPS_CMP
1930 config SYS_SUPPORTS_SMP
1933 config NR_CPUS_DEFAULT_1
1936 config NR_CPUS_DEFAULT_2
1939 config NR_CPUS_DEFAULT_4
1942 config NR_CPUS_DEFAULT_8
1945 config NR_CPUS_DEFAULT_16
1948 config NR_CPUS_DEFAULT_32
1951 config NR_CPUS_DEFAULT_64
1955 int "Maximum number of CPUs (2-64)"
1956 range 1 64 if NR_CPUS_DEFAULT_1
1958 default "1" if NR_CPUS_DEFAULT_1
1959 default "2" if NR_CPUS_DEFAULT_2
1960 default "4" if NR_CPUS_DEFAULT_4
1961 default "8" if NR_CPUS_DEFAULT_8
1962 default "16" if NR_CPUS_DEFAULT_16
1963 default "32" if NR_CPUS_DEFAULT_32
1964 default "64" if NR_CPUS_DEFAULT_64
1966 This allows you to specify the maximum number of CPUs which this
1967 kernel will support. The maximum supported value is 32 for 32-bit
1968 kernel and 64 for 64-bit kernels; the minimum value which makes
1969 sense is 1 for Qemu (useful only for kernel debugging purposes)
1970 and 2 for all others.
1972 This is purely to save memory - each supported CPU adds
1973 approximately eight kilobytes to the kernel image. For best
1974 performance should round up your number of processors to the next
1977 source "kernel/time/Kconfig"
1980 # Timer Interrupt Frequency Configuration
1984 prompt "Timer frequency"
1987 Allows the configuration of the timer frequency.
1990 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1993 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1996 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1999 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2002 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2005 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2008 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2012 config SYS_SUPPORTS_48HZ
2015 config SYS_SUPPORTS_100HZ
2018 config SYS_SUPPORTS_128HZ
2021 config SYS_SUPPORTS_250HZ
2024 config SYS_SUPPORTS_256HZ
2027 config SYS_SUPPORTS_1000HZ
2030 config SYS_SUPPORTS_1024HZ
2033 config SYS_SUPPORTS_ARBIT_HZ
2035 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2036 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2037 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2038 !SYS_SUPPORTS_1024HZ
2043 default 100 if HZ_100
2044 default 128 if HZ_128
2045 default 250 if HZ_250
2046 default 256 if HZ_256
2047 default 1000 if HZ_1000
2048 default 1024 if HZ_1024
2050 source "kernel/Kconfig.preempt"
2052 config MIPS_INSANE_LARGE
2053 bool "Support for large 64-bit configurations"
2054 depends on CPU_R10000 && 64BIT
2056 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2057 previous 64-bit processors which only supported 40 bit / 1TB. If you
2058 need processes of more than 1TB virtual address space, say Y here.
2059 This will result in additional memory usage, so it is not
2060 recommended for normal users.
2063 bool "Kexec system call (EXPERIMENTAL)"
2064 depends on EXPERIMENTAL
2066 kexec is a system call that implements the ability to shutdown your
2067 current kernel, and to start another kernel. It is like a reboot
2068 but it is independent of the system firmware. And like a reboot
2069 you can start any kernel with it, not just Linux.
2071 The name comes from the similarity to the exec system call.
2073 It is an ongoing process to be certain the hardware in a machine
2074 is properly shutdown, so do not be surprised if this code does not
2075 initially work for you. It may help to enable device hotplugging
2076 support. As of this writing the exact hardware interface is
2077 strongly in flux, so no good recommendation can be made.
2080 bool "Enable seccomp to safely compute untrusted bytecode"
2084 This kernel feature is useful for number crunching applications
2085 that may need to compute untrusted bytecode during their
2086 execution. By using pipes or other transports made available to
2087 the process as file descriptors supporting the read/write
2088 syscalls, it's possible to isolate those applications in
2089 their own address space using seccomp. Once seccomp is
2090 enabled via /proc/<pid>/seccomp, it cannot be disabled
2091 and the task is only allowed to execute a few safe syscalls
2092 defined by each seccomp mode.
2094 If unsure, say Y. Only embedded should say N here.
2098 config LOCKDEP_SUPPORT
2102 config STACKTRACE_SUPPORT
2106 source "init/Kconfig"
2108 source "kernel/Kconfig.freezer"
2110 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2118 bool "Support for PCI controller"
2119 depends on HW_HAS_PCI
2122 Find out whether you have a PCI motherboard. PCI is the name of a
2123 bus system, i.e. the way the CPU talks to the other stuff inside
2124 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2130 source "drivers/pci/Kconfig"
2133 # ISA support is now enabled via select. Too many systems still have the one
2134 # or other ISA chip on the board that users don't know about so don't expect
2135 # users to choose the right thing ...
2142 depends on HW_HAS_EISA
2144 select GENERIC_ISA_DMA
2146 The Extended Industry Standard Architecture (EISA) bus was
2147 developed as an open alternative to the IBM MicroChannel bus.
2149 The EISA bus provided some of the features of the IBM MicroChannel
2150 bus while maintaining backward compatibility with cards made for
2151 the older ISA bus. The EISA bus saw limited use between 1988 and
2152 1995 when it was made obsolete by the PCI bus.
2154 Say Y here if you are building a kernel for an EISA-based machine.
2158 source "drivers/eisa/Kconfig"
2161 bool "TURBOchannel support"
2162 depends on MACH_DECSTATION
2164 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2165 processors. Documentation on writing device drivers for TurboChannel
2167 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2170 # bool "Access.Bus support"
2179 select MIPS_EXTERNAL_TIMER
2184 source "drivers/pcmcia/Kconfig"
2186 source "drivers/pci/hotplug/Kconfig"
2190 menu "Executable file formats"
2192 source "fs/Kconfig.binfmt"
2197 config MIPS32_COMPAT
2198 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2201 Select this option if you want Linux/MIPS 32-bit binary
2202 compatibility. Since all software available for Linux/MIPS is
2203 currently 32-bit you should say Y here.
2207 depends on MIPS32_COMPAT
2210 config SYSVIPC_COMPAT
2212 depends on COMPAT && SYSVIPC
2216 bool "Kernel support for o32 binaries"
2217 depends on MIPS32_COMPAT
2219 Select this option if you want to run o32 binaries. These are pure
2220 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2221 existing binaries are in this format.
2226 bool "Kernel support for n32 binaries"
2227 depends on MIPS32_COMPAT
2229 Select this option if you want to run n32 binaries. These are
2230 64-bit binaries using 32-bit quantities for addressing and certain
2231 data that would normally be 64-bit. They are used in special
2238 default y if MIPS32_O32 || MIPS32_N32
2242 menu "Power management options"
2244 config ARCH_HIBERNATION_POSSIBLE
2246 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2248 config ARCH_SUSPEND_POSSIBLE
2250 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2252 source "kernel/power/Kconfig"
2256 source "arch/mips/kernel/cpufreq/Kconfig"
2258 source "net/Kconfig"
2260 source "drivers/Kconfig"
2264 source "arch/mips/Kconfig.debug"
2266 source "security/Kconfig"
2268 source "crypto/Kconfig"
2270 source "lib/Kconfig"