4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select RTC_LIB if !MACH_LOONGSON
20 select GENERIC_ATOMIC64 if !64BIT
22 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_HARDIRQS
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select HAVE_ARCH_JUMP_LABEL
28 menu "Machine selection"
38 bool "Alchemy processor based machines"
39 select 64BIT_PHYS_ADDR
43 select SYS_HAS_CPU_MIPS32_R1
44 select SYS_SUPPORTS_32BIT_KERNEL
45 select SYS_SUPPORTS_APM_EMULATION
47 select ARCH_WANT_OPTIONAL_GPIOLIB
48 select SYS_SUPPORTS_ZBOOT
51 bool "Texas Instruments AR7"
53 select DMA_NONCOHERENT
59 select SYS_HAS_CPU_MIPS32_R1
60 select SYS_HAS_EARLY_PRINTK
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_LITTLE_ENDIAN
63 select SYS_SUPPORTS_ZBOOT_UART16550
64 select ARCH_REQUIRE_GPIOLIB
68 Support for the Texas Instruments AR7 System-on-a-Chip
69 family: TNETD7100, 7200 and 7300.
72 bool "Atheros AR71XX/AR724X/AR913X based boards"
73 select ARCH_REQUIRE_GPIOLIB
77 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R2
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_BIG_ENDIAN
85 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
88 bool "Broadcom BCM47XX based boards"
91 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SSB_DRIVER_MIPS
99 select SSB_DRIVER_EXTIF
101 select SSB_B43_PCI_BRIDGE if PCI
102 select SSB_PCICORE_HOSTMODE if PCI
104 select SYS_HAS_EARLY_PRINTK
107 Support for BCM47XX based boards
110 bool "Broadcom BCM63XX based boards"
113 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_HAS_EARLY_PRINTK
120 select ARCH_REQUIRE_GPIOLIB
122 Support for BCM63XX based boards
129 select DMA_NONCOHERENT
135 select PCI_GT64XXX_PCI0
137 select SYS_HAS_CPU_NEVADA
138 select SYS_HAS_EARLY_PRINTK
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_64BIT_KERNEL
141 select SYS_SUPPORTS_LITTLE_ENDIAN
143 config MACH_DECSTATION
150 select CPU_DADDI_WORKAROUNDS if 64BIT
151 select CPU_R4000_WORKAROUNDS if 64BIT
152 select CPU_R4400_WORKAROUNDS if 64BIT
153 select DMA_NONCOHERENT
156 select SYS_HAS_CPU_R3000
157 select SYS_HAS_CPU_R4X00
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_128HZ
162 select SYS_SUPPORTS_256HZ
163 select SYS_SUPPORTS_1024HZ
165 This enables support for DEC's MIPS based workstations. For details
166 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
167 DECstation porting pages on <http://decstation.unix-ag.org/>.
169 If you have one of the following DECstation Models you definitely
170 want to choose R4xx0 for the CPU Type:
177 otherwise choose R3000.
180 bool "Jazz family of machines"
183 select ARCH_MAY_HAVE_PC_FDC
186 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
187 select GENERIC_ISA_DMA
192 select SYS_HAS_CPU_R4X00
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
195 select SYS_SUPPORTS_100HZ
197 This a family of machines based on the MIPS R4030 chipset which was
198 used by several vendors to build RISC/os and Windows NT workstations.
199 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
200 Olivetti M700-10 workstations.
203 bool "Ingenic JZ4740 based machines"
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select DMA_NONCOHERENT
210 select ARCH_REQUIRE_GPIOLIB
211 select SYS_HAS_EARLY_PRINTK
216 bool "Lantiq based platforms"
217 select DMA_NONCOHERENT
221 select SYS_HAS_CPU_MIPS32_R1
222 select SYS_HAS_CPU_MIPS32_R2
223 select SYS_SUPPORTS_BIG_ENDIAN
224 select SYS_SUPPORTS_32BIT_KERNEL
225 select SYS_SUPPORTS_MULTITHREADING
226 select SYS_HAS_EARLY_PRINTK
227 select ARCH_REQUIRE_GPIOLIB
234 bool "LASAT Networks platforms"
237 select DMA_NONCOHERENT
238 select SYS_HAS_EARLY_PRINTK
241 select PCI_GT64XXX_PCI0
243 select R5000_CPU_SCACHE
244 select SYS_HAS_CPU_R5000
245 select SYS_SUPPORTS_32BIT_KERNEL
246 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
247 select SYS_SUPPORTS_LITTLE_ENDIAN
250 bool "Loongson family of machines"
251 select SYS_SUPPORTS_ZBOOT
253 This enables the support of Loongson family of machines.
255 Loongson is a family of general-purpose MIPS-compatible CPUs.
256 developed at Institute of Computing Technology (ICT),
257 Chinese Academy of Sciences (CAS) in the People's Republic
258 of China. The chief architect is Professor Weiwu Hu.
261 bool "MIPS Malta board"
262 select ARCH_MAY_HAVE_PC_FDC
267 select DMA_NONCOHERENT
268 select GENERIC_ISA_DMA
274 select MIPS_BOARDS_GEN
276 select MIPS_CPU_SCACHE
277 select PCI_GT64XXX_PCI0
280 select SYS_HAS_CPU_MIPS32_R1
281 select SYS_HAS_CPU_MIPS32_R2
282 select SYS_HAS_CPU_MIPS64_R1
283 select SYS_HAS_CPU_NEVADA
284 select SYS_HAS_CPU_RM7000
285 select SYS_HAS_EARLY_PRINTK
286 select SYS_SUPPORTS_32BIT_KERNEL
287 select SYS_SUPPORTS_64BIT_KERNEL
288 select SYS_SUPPORTS_BIG_ENDIAN
289 select SYS_SUPPORTS_LITTLE_ENDIAN
290 select SYS_SUPPORTS_MIPS_CMP
291 select SYS_SUPPORTS_MULTITHREADING
292 select SYS_SUPPORTS_SMARTMIPS
293 select SYS_SUPPORTS_ZBOOT
295 This enables support for the MIPS Technologies Malta evaluation
299 bool 'MIPS simulator (MIPSsim)'
302 select DMA_NONCOHERENT
303 select SYS_HAS_EARLY_PRINTK
306 select SYS_HAS_CPU_MIPS32_R1
307 select SYS_HAS_CPU_MIPS32_R2
308 select SYS_HAS_EARLY_PRINTK
309 select SYS_SUPPORTS_32BIT_KERNEL
310 select SYS_SUPPORTS_BIG_ENDIAN
311 select SYS_SUPPORTS_MULTITHREADING
312 select SYS_SUPPORTS_LITTLE_ENDIAN
314 This option enables support for MIPS Technologies MIPSsim software
318 bool "NEC EMMA2RH Mark-eins board"
322 This enables support for the NEC Electronics Mark-eins boards.
325 bool "NEC VR4100 series based machines"
328 select SYS_HAS_CPU_VR41XX
329 select ARCH_REQUIRE_GPIOLIB
332 bool "NXP STB220 board"
335 Support for NXP Semiconductors STB220 Development Board.
342 Support for NXP Semiconductors STB225 Development Board.
345 bool "NXP PNX8550 based JBS board"
347 select SYS_SUPPORTS_LITTLE_ENDIAN
349 config PNX8550_STB810
350 bool "NXP PNX8550 based STB810 board"
352 select SYS_SUPPORTS_LITTLE_ENDIAN
355 bool "PMC-Sierra MSP chipsets"
356 depends on EXPERIMENTAL
359 select DMA_NONCOHERENT
361 select NO_EXCEPT_FILL
363 select SYS_HAS_CPU_MIPS32_R1
364 select SYS_HAS_CPU_MIPS32_R2
365 select SYS_SUPPORTS_32BIT_KERNEL
366 select SYS_SUPPORTS_BIG_ENDIAN
369 select SERIAL_8250_CONSOLE
371 This adds support for the PMC-Sierra family of Multi-Service
372 Processor System-On-A-Chips. These parts include a number
373 of integrated peripherals, interfaces and DSPs in addition to
374 a variety of MIPS cores.
377 bool "PMC-Sierra Yosemite eval board"
386 select SYS_HAS_CPU_RM9000
387 select SYS_HAS_EARLY_PRINTK
388 select SYS_SUPPORTS_32BIT_KERNEL
389 select SYS_SUPPORTS_64BIT_KERNEL
390 select SYS_SUPPORTS_BIG_ENDIAN
391 select SYS_SUPPORTS_HIGHMEM
392 select SYS_SUPPORTS_SMP
394 Yosemite is an evaluation board for the RM9000x2 processor
395 manufactured by PMC-Sierra.
401 select CPU_MIPSR2_IRQ_VI
402 select CPU_MIPSR2_IRQ_EI
404 select DMA_NONCOHERENT
406 select SYS_HAS_EARLY_PRINTK
407 select SYS_HAS_CPU_MIPS32_R2
408 select SYS_SUPPORTS_32BIT_KERNEL
409 select SYS_SUPPORTS_BIG_ENDIAN
410 select SYS_SUPPORTS_HIGHMEM
411 select USB_OHCI_LITTLE_ENDIAN
413 This enables support for the Cisco PowerTV Platform.
416 bool "SGI IP22 (Indy/Indigo2)"
422 select DEFAULT_SGI_PARTITION
423 select DMA_NONCOHERENT
427 select IP22_CPU_SCACHE
429 select GENERIC_ISA_DMA_SUPPORT_BROKEN
431 select SGI_HAS_INDYDOG
437 select SYS_HAS_CPU_R4X00
438 select SYS_HAS_CPU_R5000
440 # Disable EARLY_PRINTK for now since it leads to overwritten prom
441 # memory during early boot on some machines.
443 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
444 # for a more details discussion
446 # select SYS_HAS_EARLY_PRINTK
447 select SYS_SUPPORTS_32BIT_KERNEL
448 select SYS_SUPPORTS_64BIT_KERNEL
449 select SYS_SUPPORTS_BIG_ENDIAN
451 This are the SGI Indy, Challenge S and Indigo2, as well as certain
452 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
453 that runs on these, say Y here.
456 bool "SGI IP27 (Origin200/2000)"
460 select DEFAULT_SGI_PARTITION
462 select SYS_HAS_EARLY_PRINTK
464 select NR_CPUS_DEFAULT_64
465 select SYS_HAS_CPU_R10000
466 select SYS_SUPPORTS_64BIT_KERNEL
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_NUMA
469 select SYS_SUPPORTS_SMP
471 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
472 workstations. To compile a Linux kernel that runs on these, say Y
476 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
477 depends on EXPERIMENTAL
483 select DEFAULT_SGI_PARTITION
484 select DMA_NONCOHERENT
485 select GENERIC_ISA_DMA_SUPPORT_BROKEN
491 select SGI_HAS_INDYDOG
497 select SYS_HAS_CPU_R10000
499 # Disable EARLY_PRINTK for now since it leads to overwritten prom
500 # memory during early boot on some machines.
502 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
503 # for a more details discussion
505 # select SYS_HAS_EARLY_PRINTK
506 select SYS_SUPPORTS_64BIT_KERNEL
507 select SYS_SUPPORTS_BIG_ENDIAN
509 This is the SGI Indigo2 with R10000 processor. To compile a Linux
510 kernel that runs on these, say Y here.
519 select DMA_NONCOHERENT
522 select R5000_CPU_SCACHE
523 select RM7000_CPU_SCACHE
524 select SYS_HAS_CPU_R5000
525 select SYS_HAS_CPU_R10000 if BROKEN
526 select SYS_HAS_CPU_RM7000
527 select SYS_HAS_CPU_NEVADA
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
531 If you want this kernel to run on SGI O2 workstation, say Y here.
534 bool "Sibyte BCM91120C-CRhine"
535 depends on EXPERIMENTAL
538 select SIBYTE_BCM1120
540 select SYS_HAS_CPU_SB1
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select SYS_SUPPORTS_LITTLE_ENDIAN
545 bool "Sibyte BCM91120x-Carmel"
546 depends on EXPERIMENTAL
549 select SIBYTE_BCM1120
551 select SYS_HAS_CPU_SB1
552 select SYS_SUPPORTS_BIG_ENDIAN
553 select SYS_SUPPORTS_LITTLE_ENDIAN
556 bool "Sibyte BCM91125C-CRhone"
557 depends on EXPERIMENTAL
560 select SIBYTE_BCM1125
562 select SYS_HAS_CPU_SB1
563 select SYS_SUPPORTS_BIG_ENDIAN
564 select SYS_SUPPORTS_HIGHMEM
565 select SYS_SUPPORTS_LITTLE_ENDIAN
568 bool "Sibyte BCM91125E-Rhone"
569 depends on EXPERIMENTAL
572 select SIBYTE_BCM1125H
574 select SYS_HAS_CPU_SB1
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select SYS_SUPPORTS_LITTLE_ENDIAN
579 bool "Sibyte BCM91250A-SWARM"
582 select HAVE_PATA_PLATFORM
583 select NR_CPUS_DEFAULT_2
586 select SYS_HAS_CPU_SB1
587 select SYS_SUPPORTS_BIG_ENDIAN
588 select SYS_SUPPORTS_HIGHMEM
589 select SYS_SUPPORTS_LITTLE_ENDIAN
590 select ZONE_DMA32 if 64BIT
592 config SIBYTE_LITTLESUR
593 bool "Sibyte BCM91250C2-LittleSur"
594 depends on EXPERIMENTAL
597 select HAVE_PATA_PLATFORM
598 select NR_CPUS_DEFAULT_2
601 select SYS_HAS_CPU_SB1
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_HIGHMEM
604 select SYS_SUPPORTS_LITTLE_ENDIAN
606 config SIBYTE_SENTOSA
607 bool "Sibyte BCM91250E-Sentosa"
608 depends on EXPERIMENTAL
611 select NR_CPUS_DEFAULT_2
614 select SYS_HAS_CPU_SB1
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select SYS_SUPPORTS_LITTLE_ENDIAN
619 bool "Sibyte BCM91480B-BigSur"
622 select NR_CPUS_DEFAULT_4
623 select SIBYTE_BCM1x80
625 select SYS_HAS_CPU_SB1
626 select SYS_SUPPORTS_BIG_ENDIAN
627 select SYS_SUPPORTS_HIGHMEM
628 select SYS_SUPPORTS_LITTLE_ENDIAN
629 select ZONE_DMA32 if 64BIT
632 bool "SNI RM200/300/400"
633 select ARC if CPU_LITTLE_ENDIAN
634 select ARC32 if CPU_LITTLE_ENDIAN
635 select SNIPROM if CPU_BIG_ENDIAN
636 select ARCH_MAY_HAVE_PC_FDC
640 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
641 select DMA_NONCOHERENT
642 select GENERIC_ISA_DMA
649 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
650 select SYS_HAS_CPU_R4X00
651 select SYS_HAS_CPU_R5000
652 select SYS_HAS_CPU_R10000
653 select R5000_CPU_SCACHE
654 select SYS_HAS_EARLY_PRINTK
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select SYS_SUPPORTS_HIGHMEM
659 select SYS_SUPPORTS_LITTLE_ENDIAN
661 The SNI RM200/300/400 are MIPS-based machines manufactured by
662 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
663 Technology and now in turn merged with Fujitsu. Say Y here to
664 support this machine type.
667 bool "Toshiba TX39 series based machines"
670 bool "Toshiba TX49 series based machines"
672 config MIKROTIK_RB532
673 bool "Mikrotik RB532 boards"
676 select DMA_NONCOHERENT
679 select SYS_HAS_CPU_MIPS32_R1
680 select SYS_SUPPORTS_32BIT_KERNEL
681 select SYS_SUPPORTS_LITTLE_ENDIAN
684 select ARCH_REQUIRE_GPIOLIB
686 Support the Mikrotik(tm) RouterBoard 532 series,
687 based on the IDT RC32434 SoC.
690 bool "Wind River PPMC board"
695 select DMA_NONCOHERENT
697 select PCI_GT64XXX_PCI0
699 select SYS_HAS_CPU_MIPS32_R1
700 select SYS_HAS_CPU_MIPS32_R2
701 select SYS_HAS_CPU_MIPS64_R1
702 select SYS_HAS_CPU_NEVADA
703 select SYS_HAS_CPU_RM7000
704 select SYS_SUPPORTS_32BIT_KERNEL
705 select SYS_SUPPORTS_64BIT_KERNEL
706 select SYS_SUPPORTS_BIG_ENDIAN
707 select SYS_SUPPORTS_LITTLE_ENDIAN
709 This enables support for the Wind River MIPS32 4KC PPMC evaluation
710 board, which is based on GT64120 bridge chip.
712 config CAVIUM_OCTEON_SIMULATOR
713 bool "Cavium Networks Octeon Simulator"
715 select 64BIT_PHYS_ADDR
717 select SYS_SUPPORTS_64BIT_KERNEL
718 select SYS_SUPPORTS_BIG_ENDIAN
719 select SYS_SUPPORTS_HIGHMEM
720 select SYS_SUPPORTS_HOTPLUG_CPU
721 select SYS_HAS_CPU_CAVIUM_OCTEON
723 The Octeon simulator is software performance model of the Cavium
724 Octeon Processor. It supports simulating Octeon processors on x86
727 config CAVIUM_OCTEON_REFERENCE_BOARD
728 bool "Cavium Networks Octeon reference board"
730 select 64BIT_PHYS_ADDR
732 select SYS_SUPPORTS_64BIT_KERNEL
733 select SYS_SUPPORTS_BIG_ENDIAN
734 select SYS_SUPPORTS_HIGHMEM
735 select SYS_SUPPORTS_HOTPLUG_CPU
736 select SYS_HAS_EARLY_PRINTK
737 select SYS_HAS_CPU_CAVIUM_OCTEON
740 select ARCH_SUPPORTS_MSI
742 select USB_ARCH_HAS_OHCI
743 select USB_ARCH_HAS_EHCI
745 This option supports all of the Octeon reference boards from Cavium
746 Networks. It builds a kernel that dynamically determines the Octeon
747 CPU type and supports all known board reference implementations.
748 Some of the supported boards are:
755 Say Y here for most Octeon reference boards.
758 bool "Netlogic XLR/XLS based systems"
759 depends on EXPERIMENTAL
763 select SYS_HAS_CPU_XLR
764 select SYS_SUPPORTS_SMP
767 select SYS_SUPPORTS_32BIT_KERNEL
768 select SYS_SUPPORTS_64BIT_KERNEL
769 select 64BIT_PHYS_ADDR
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_HIGHMEM
773 select NR_CPUS_DEFAULT_32
777 select ZONE_DMA if 64BIT
779 select SYS_HAS_EARLY_PRINTK
781 Support for systems based on Netlogic XLR and XLS processors.
782 Say Y here if you have a XLR or XLS based board.
786 source "arch/mips/alchemy/Kconfig"
787 source "arch/mips/ath79/Kconfig"
788 source "arch/mips/bcm63xx/Kconfig"
789 source "arch/mips/jazz/Kconfig"
790 source "arch/mips/jz4740/Kconfig"
791 source "arch/mips/lantiq/Kconfig"
792 source "arch/mips/lasat/Kconfig"
793 source "arch/mips/pmc-sierra/Kconfig"
794 source "arch/mips/powertv/Kconfig"
795 source "arch/mips/sgi-ip27/Kconfig"
796 source "arch/mips/sibyte/Kconfig"
797 source "arch/mips/txx9/Kconfig"
798 source "arch/mips/vr41xx/Kconfig"
799 source "arch/mips/cavium-octeon/Kconfig"
800 source "arch/mips/loongson/Kconfig"
801 source "arch/mips/netlogic/Kconfig"
805 config RWSEM_GENERIC_SPINLOCK
809 config RWSEM_XCHGADD_ALGORITHM
812 config ARCH_HAS_ILOG2_U32
816 config ARCH_HAS_ILOG2_U64
820 config ARCH_SUPPORTS_OPROFILE
822 default y if !MIPS_MT_SMTC
824 config GENERIC_FIND_NEXT_BIT
828 config GENERIC_FIND_BIT_LE
832 config GENERIC_HWEIGHT
836 config GENERIC_CALIBRATE_DELAY
840 config GENERIC_CLOCKEVENTS
844 config GENERIC_CMOS_UPDATE
848 config SCHED_OMIT_FRAME_POINTER
853 # Select some configuration options automatically based on user selections.
858 config ARCH_MAY_HAVE_PC_FDC
907 select ARCH_REQUIRE_GPIOLIB
913 config ARCH_DMA_ADDR_T_64BIT
914 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
919 config DMA_NONCOHERENT
921 select NEED_DMA_MAP_STATE
923 config NEED_DMA_MAP_STATE
926 config SYS_HAS_EARLY_PRINTK
930 bool "Support for hot-pluggable CPUs"
931 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
933 Say Y here to allow turning CPUs off and on. CPUs can be
934 controlled through /sys/devices/system/cpu.
935 (Note: power management support will enable this option
936 automatically on SMP systems. )
937 Say N if you want to disable CPU hotplug.
939 config SYS_SUPPORTS_HOTPLUG_CPU
954 config MIPS_DISABLE_OBSOLETE_IDE
966 config GENERIC_ISA_DMA
968 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
971 config GENERIC_ISA_DMA_SUPPORT_BROKEN
973 select GENERIC_ISA_DMA
982 # Endianess selection. Sufficiently obscure so many users don't know what to
983 # answer,so we try hard to limit the available choices. Also the use of a
984 # choice statement should be more obvious to the user.
987 prompt "Endianess selection"
989 Some MIPS machines can be configured for either little or big endian
990 byte order. These modes require different kernels and a different
991 Linux distribution. In general there is one preferred byteorder for a
992 particular system but some systems are just as commonly used in the
993 one or the other endianness.
995 config CPU_BIG_ENDIAN
997 depends on SYS_SUPPORTS_BIG_ENDIAN
999 config CPU_LITTLE_ENDIAN
1000 bool "Little endian"
1001 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1009 config SYS_SUPPORTS_APM_EMULATION
1012 config SYS_SUPPORTS_BIG_ENDIAN
1015 config SYS_SUPPORTS_LITTLE_ENDIAN
1018 config SYS_SUPPORTS_HUGETLBFS
1020 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1047 config MIPS_BOARDS_GEN
1050 config PCI_GT64XXX_PCI0
1053 config NO_EXCEPT_FILL
1058 select SERIAL_RM9000
1064 select DMA_NONCOHERENT
1066 select SWAP_IO_SPACE
1067 select SYS_HAS_CPU_R5500
1068 select SYS_SUPPORTS_32BIT_KERNEL
1069 select SYS_SUPPORTS_64BIT_KERNEL
1070 select SYS_SUPPORTS_BIG_ENDIAN
1077 select DMA_NONCOHERENT
1078 select SYS_HAS_CPU_MIPS32_R2
1079 select SYS_SUPPORTS_32BIT_KERNEL
1080 select SYS_SUPPORTS_LITTLE_ENDIAN
1081 select SYS_SUPPORTS_BIG_ENDIAN
1083 select CPU_MIPSR2_IRQ_VI
1095 select DMA_NONCOHERENT
1097 select SYS_HAS_CPU_MIPS32_R1
1098 select SYS_HAS_EARLY_PRINTK
1099 select SYS_SUPPORTS_32BIT_KERNEL
1102 config SWAP_IO_SPACE
1105 config SERIAL_RM9000
1108 config SGI_HAS_INDYDOG
1120 config SGI_HAS_ZILOG
1123 config SGI_HAS_I8042
1126 config DEFAULT_SGI_PARTITION
1138 config MIPS_L1_CACHE_SHIFT
1140 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1141 default "6" if MIPS_CPU_SCACHE
1142 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1145 config HAVE_STD_PC_SERIAL_PORT
1149 bool "ARC console support"
1150 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1154 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1159 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1168 menu "CPU selection"
1174 config CPU_LOONGSON2E
1176 depends on SYS_HAS_CPU_LOONGSON2E
1177 select CPU_LOONGSON2
1179 The Loongson 2E processor implements the MIPS III instruction set
1180 with many extensions.
1182 It has an internal FPGA northbridge, which is compatible to
1185 config CPU_LOONGSON2F
1187 depends on SYS_HAS_CPU_LOONGSON2F
1188 select CPU_LOONGSON2
1190 select ARCH_REQUIRE_GPIOLIB
1192 The Loongson 2F processor implements the MIPS III instruction set
1193 with many extensions.
1195 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1196 have a similar programming interface with FPGA northbridge used in
1199 config CPU_MIPS32_R1
1200 bool "MIPS32 Release 1"
1201 depends on SYS_HAS_CPU_MIPS32_R1
1202 select CPU_HAS_PREFETCH
1203 select CPU_SUPPORTS_32BIT_KERNEL
1204 select CPU_SUPPORTS_HIGHMEM
1206 Choose this option to build a kernel for release 1 or later of the
1207 MIPS32 architecture. Most modern embedded systems with a 32-bit
1208 MIPS processor are based on a MIPS32 processor. If you know the
1209 specific type of processor in your system, choose those that one
1210 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1211 Release 2 of the MIPS32 architecture is available since several
1212 years so chances are you even have a MIPS32 Release 2 processor
1213 in which case you should choose CPU_MIPS32_R2 instead for better
1216 config CPU_MIPS32_R2
1217 bool "MIPS32 Release 2"
1218 depends on SYS_HAS_CPU_MIPS32_R2
1219 select CPU_HAS_PREFETCH
1220 select CPU_SUPPORTS_32BIT_KERNEL
1221 select CPU_SUPPORTS_HIGHMEM
1223 Choose this option to build a kernel for release 2 or later of the
1224 MIPS32 architecture. Most modern embedded systems with a 32-bit
1225 MIPS processor are based on a MIPS32 processor. If you know the
1226 specific type of processor in your system, choose those that one
1227 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1229 config CPU_MIPS64_R1
1230 bool "MIPS64 Release 1"
1231 depends on SYS_HAS_CPU_MIPS64_R1
1232 select CPU_HAS_PREFETCH
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1235 select CPU_SUPPORTS_HIGHMEM
1236 select CPU_SUPPORTS_HUGEPAGES
1238 Choose this option to build a kernel for release 1 or later of the
1239 MIPS64 architecture. Many modern embedded systems with a 64-bit
1240 MIPS processor are based on a MIPS64 processor. If you know the
1241 specific type of processor in your system, choose those that one
1242 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1243 Release 2 of the MIPS64 architecture is available since several
1244 years so chances are you even have a MIPS64 Release 2 processor
1245 in which case you should choose CPU_MIPS64_R2 instead for better
1248 config CPU_MIPS64_R2
1249 bool "MIPS64 Release 2"
1250 depends on SYS_HAS_CPU_MIPS64_R2
1251 select CPU_HAS_PREFETCH
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1254 select CPU_SUPPORTS_HIGHMEM
1255 select CPU_SUPPORTS_HUGEPAGES
1257 Choose this option to build a kernel for release 2 or later of the
1258 MIPS64 architecture. Many modern embedded systems with a 64-bit
1259 MIPS processor are based on a MIPS64 processor. If you know the
1260 specific type of processor in your system, choose those that one
1261 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1265 depends on SYS_HAS_CPU_R3000
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_HIGHMEM
1270 Please make sure to pick the right CPU type. Linux/MIPS is not
1271 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1272 *not* work on R4000 machines and vice versa. However, since most
1273 of the supported machines have an R4000 (or similar) CPU, R4x00
1274 might be a safe bet. If the resulting kernel does not work,
1275 try to recompile with R3000.
1279 depends on SYS_HAS_CPU_TX39XX
1280 select CPU_SUPPORTS_32BIT_KERNEL
1284 depends on SYS_HAS_CPU_VR41XX
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1288 The options selects support for the NEC VR4100 series of processors.
1289 Only choose this option if you have one of these processors as a
1290 kernel built with this option will not run on any other type of
1291 processor or vice versa.
1295 depends on SYS_HAS_CPU_R4300
1296 select CPU_SUPPORTS_32BIT_KERNEL
1297 select CPU_SUPPORTS_64BIT_KERNEL
1299 MIPS Technologies R4300-series processors.
1303 depends on SYS_HAS_CPU_R4X00
1304 select CPU_SUPPORTS_32BIT_KERNEL
1305 select CPU_SUPPORTS_64BIT_KERNEL
1307 MIPS Technologies R4000-series processors other than 4300, including
1308 the R4000, R4400, R4600, and 4700.
1312 depends on SYS_HAS_CPU_TX49XX
1313 select CPU_HAS_PREFETCH
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1319 depends on SYS_HAS_CPU_R5000
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1323 MIPS Technologies R5000-series processors other than the Nevada.
1327 depends on SYS_HAS_CPU_R5432
1328 select CPU_SUPPORTS_32BIT_KERNEL
1329 select CPU_SUPPORTS_64BIT_KERNEL
1333 depends on SYS_HAS_CPU_R5500
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1336 select CPU_SUPPORTS_HUGEPAGES
1338 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1343 depends on EXPERIMENTAL
1344 depends on SYS_HAS_CPU_R6000
1345 select CPU_SUPPORTS_32BIT_KERNEL
1347 MIPS Technologies R6000 and R6000A series processors. Note these
1348 processors are extremely rare and the support for them is incomplete.
1352 depends on SYS_HAS_CPU_NEVADA
1353 select CPU_SUPPORTS_32BIT_KERNEL
1354 select CPU_SUPPORTS_64BIT_KERNEL
1356 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1360 depends on EXPERIMENTAL
1361 depends on SYS_HAS_CPU_R8000
1362 select CPU_HAS_PREFETCH
1363 select CPU_SUPPORTS_64BIT_KERNEL
1365 MIPS Technologies R8000 processors. Note these processors are
1366 uncommon and the support for them is incomplete.
1370 depends on SYS_HAS_CPU_R10000
1371 select CPU_HAS_PREFETCH
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1376 MIPS Technologies R10000-series processors.
1380 depends on SYS_HAS_CPU_RM7000
1381 select CPU_HAS_PREFETCH
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select CPU_SUPPORTS_HIGHMEM
1388 depends on SYS_HAS_CPU_RM9000
1389 select CPU_HAS_PREFETCH
1390 select CPU_SUPPORTS_32BIT_KERNEL
1391 select CPU_SUPPORTS_64BIT_KERNEL
1392 select CPU_SUPPORTS_HIGHMEM
1393 select WEAK_ORDERING
1397 depends on SYS_HAS_CPU_SB1
1398 select CPU_SUPPORTS_32BIT_KERNEL
1399 select CPU_SUPPORTS_64BIT_KERNEL
1400 select CPU_SUPPORTS_HIGHMEM
1401 select WEAK_ORDERING
1403 config CPU_CAVIUM_OCTEON
1404 bool "Cavium Octeon processor"
1405 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1406 select CPU_HAS_PREFETCH
1407 select CPU_SUPPORTS_64BIT_KERNEL
1408 select SYS_SUPPORTS_SMP
1409 select NR_CPUS_DEFAULT_16
1410 select WEAK_ORDERING
1411 select CPU_SUPPORTS_HIGHMEM
1412 select CPU_SUPPORTS_HUGEPAGES
1414 The Cavium Octeon processor is a highly integrated chip containing
1415 many ethernet hardware widgets for networking tasks. The processor
1416 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1417 Full details can be found at http://www.caviumnetworks.com.
1419 config CPU_BMIPS3300
1421 depends on SYS_HAS_CPU_BMIPS3300
1422 select DMA_NONCOHERENT
1424 select SWAP_IO_SPACE
1425 select SYS_SUPPORTS_32BIT_KERNEL
1426 select WEAK_ORDERING
1428 Broadcom BMIPS3300 processors.
1430 config CPU_BMIPS4350
1432 depends on SYS_HAS_CPU_BMIPS4350
1433 select CPU_SUPPORTS_32BIT_KERNEL
1434 select DMA_NONCOHERENT
1436 select SWAP_IO_SPACE
1437 select SYS_SUPPORTS_SMP
1438 select SYS_SUPPORTS_HOTPLUG_CPU
1439 select WEAK_ORDERING
1441 Broadcom BMIPS4350 ("VIPER") processors.
1443 config CPU_BMIPS4380
1445 depends on SYS_HAS_CPU_BMIPS4380
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select DMA_NONCOHERENT
1449 select SWAP_IO_SPACE
1450 select SYS_SUPPORTS_SMP
1451 select SYS_SUPPORTS_HOTPLUG_CPU
1452 select WEAK_ORDERING
1454 Broadcom BMIPS4380 processors.
1456 config CPU_BMIPS5000
1458 depends on SYS_HAS_CPU_BMIPS5000
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_HIGHMEM
1461 select DMA_NONCOHERENT
1463 select SWAP_IO_SPACE
1464 select SYS_SUPPORTS_SMP
1465 select SYS_SUPPORTS_HOTPLUG_CPU
1466 select WEAK_ORDERING
1468 Broadcom BMIPS5000 processors.
1471 bool "Netlogic XLR SoC"
1472 depends on SYS_HAS_CPU_XLR
1473 select CPU_SUPPORTS_32BIT_KERNEL
1474 select CPU_SUPPORTS_64BIT_KERNEL
1475 select CPU_SUPPORTS_HIGHMEM
1476 select WEAK_ORDERING
1477 select WEAK_REORDERING_BEYOND_LLSC
1478 select CPU_SUPPORTS_HUGEPAGES
1480 Netlogic Microsystems XLR/XLS processors.
1484 config CPU_NOP_WORKAROUNDS
1487 config CPU_JUMP_WORKAROUNDS
1490 config CPU_LOONGSON2F_WORKAROUNDS
1491 bool "Loongson 2F Workarounds"
1493 select CPU_NOP_WORKAROUNDS
1494 select CPU_JUMP_WORKAROUNDS
1496 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1497 require workarounds. Without workarounds the system may hang
1498 unexpectedly. For more information please refer to the gas
1499 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1501 Loongson 2F03 and later have fixed these issues and no workarounds
1502 are needed. The workarounds have no significant side effect on them
1503 but may decrease the performance of the system so this option should
1504 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1507 If unsure, please say Y.
1508 endif # CPU_LOONGSON2F
1510 config SYS_SUPPORTS_ZBOOT
1512 select HAVE_KERNEL_GZIP
1513 select HAVE_KERNEL_BZIP2
1514 select HAVE_KERNEL_LZMA
1515 select HAVE_KERNEL_LZO
1517 config SYS_SUPPORTS_ZBOOT_UART16550
1519 select SYS_SUPPORTS_ZBOOT
1521 config CPU_LOONGSON2
1523 select CPU_SUPPORTS_32BIT_KERNEL
1524 select CPU_SUPPORTS_64BIT_KERNEL
1525 select CPU_SUPPORTS_HIGHMEM
1527 config SYS_HAS_CPU_LOONGSON2E
1530 config SYS_HAS_CPU_LOONGSON2F
1532 select CPU_SUPPORTS_CPUFREQ
1533 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1534 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1536 config SYS_HAS_CPU_MIPS32_R1
1539 config SYS_HAS_CPU_MIPS32_R2
1542 config SYS_HAS_CPU_MIPS64_R1
1545 config SYS_HAS_CPU_MIPS64_R2
1548 config SYS_HAS_CPU_R3000
1551 config SYS_HAS_CPU_TX39XX
1554 config SYS_HAS_CPU_VR41XX
1557 config SYS_HAS_CPU_R4300
1560 config SYS_HAS_CPU_R4X00
1563 config SYS_HAS_CPU_TX49XX
1566 config SYS_HAS_CPU_R5000
1569 config SYS_HAS_CPU_R5432
1572 config SYS_HAS_CPU_R5500
1575 config SYS_HAS_CPU_R6000
1578 config SYS_HAS_CPU_NEVADA
1581 config SYS_HAS_CPU_R8000
1584 config SYS_HAS_CPU_R10000
1587 config SYS_HAS_CPU_RM7000
1590 config SYS_HAS_CPU_RM9000
1593 config SYS_HAS_CPU_SB1
1596 config SYS_HAS_CPU_CAVIUM_OCTEON
1599 config SYS_HAS_CPU_BMIPS3300
1602 config SYS_HAS_CPU_BMIPS4350
1605 config SYS_HAS_CPU_BMIPS4380
1608 config SYS_HAS_CPU_BMIPS5000
1611 config SYS_HAS_CPU_XLR
1615 # CPU may reorder R->R, R->W, W->R, W->W
1616 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1618 config WEAK_ORDERING
1622 # CPU may reorder reads and writes beyond LL/SC
1623 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1625 config WEAK_REORDERING_BEYOND_LLSC
1630 # These two indicate any level of the MIPS32 and MIPS64 architecture
1634 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1638 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1641 # These two indicate the revision of the architecture, either Release 1 or Release 2
1645 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1649 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1651 config SYS_SUPPORTS_32BIT_KERNEL
1653 config SYS_SUPPORTS_64BIT_KERNEL
1655 config CPU_SUPPORTS_32BIT_KERNEL
1657 config CPU_SUPPORTS_64BIT_KERNEL
1659 config CPU_SUPPORTS_CPUFREQ
1661 config CPU_SUPPORTS_ADDRWINCFG
1663 config CPU_SUPPORTS_HUGEPAGES
1665 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1667 config MIPS_PGD_C0_CONTEXT
1669 default y if 64BIT && CPU_MIPSR2
1672 # Set to y for ptrace access to watch registers.
1674 config HARDWARE_WATCHPOINTS
1676 default y if CPU_MIPSR1 || CPU_MIPSR2
1682 prompt "Kernel code model"
1684 You should only select this option if you have a workload that
1685 actually benefits from 64-bit processing or if your machine has
1686 large memory. You will only be presented a single option in this
1687 menu if your system does not support both 32-bit and 64-bit kernels.
1690 bool "32-bit kernel"
1691 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1694 Select this option if you want to build a 32-bit kernel.
1696 bool "64-bit kernel"
1697 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1698 select HAVE_SYSCALL_WRAPPERS
1700 Select this option if you want to build a 64-bit kernel.
1705 prompt "Kernel page size"
1706 default PAGE_SIZE_4KB
1708 config PAGE_SIZE_4KB
1710 depends on !CPU_LOONGSON2
1712 This option select the standard 4kB Linux page size. On some
1713 R3000-family processors this is the only available page size. Using
1714 4kB page size will minimize memory consumption and is therefore
1715 recommended for low memory systems.
1717 config PAGE_SIZE_8KB
1719 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1721 Using 8kB page size will result in higher performance kernel at
1722 the price of higher memory consumption. This option is available
1723 only on R8000 and cnMIPS processors. Note that you will need a
1724 suitable Linux distribution to support this.
1726 config PAGE_SIZE_16KB
1728 depends on !CPU_R3000 && !CPU_TX39XX
1730 Using 16kB page size will result in higher performance kernel at
1731 the price of higher memory consumption. This option is available on
1732 all non-R3000 family processors. Note that you will need a suitable
1733 Linux distribution to support this.
1735 config PAGE_SIZE_32KB
1737 depends on CPU_CAVIUM_OCTEON
1739 Using 32kB page size will result in higher performance kernel at
1740 the price of higher memory consumption. This option is available
1741 only on cnMIPS cores. Note that you will need a suitable Linux
1742 distribution to support this.
1744 config PAGE_SIZE_64KB
1746 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1748 Using 64kB page size will result in higher performance kernel at
1749 the price of higher memory consumption. This option is available on
1750 all non-R3000 family processor. Not that at the time of this
1751 writing this option is still high experimental.
1755 config FORCE_MAX_ZONEORDER
1756 int "Maximum zone order"
1757 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1758 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1759 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1760 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1764 The kernel memory allocator divides physically contiguous memory
1765 blocks into "zones", where each zone is a power of two number of
1766 pages. This option selects the largest power of two that the kernel
1767 keeps in the memory allocator. If you need to allocate very large
1768 blocks of physically contiguous memory, then you may need to
1769 increase this value.
1771 This config option is actually maximum order plus one. For example,
1772 a value of 11 means that the largest free memory block is 2^10 pages.
1774 The page size is not necessarily 4KB. Keep this in mind
1775 when choosing a value for this option.
1780 config IP22_CPU_SCACHE
1785 # Support for a MIPS32 / MIPS64 style S-caches
1787 config MIPS_CPU_SCACHE
1791 config R5000_CPU_SCACHE
1795 config RM7000_CPU_SCACHE
1799 config SIBYTE_DMA_PAGEOPS
1800 bool "Use DMA to clear/copy pages"
1803 Instead of using the CPU to zero and copy pages, use a Data Mover
1804 channel. These DMA channels are otherwise unused by the standard
1805 SiByte Linux port. Seems to give a small performance benefit.
1807 config CPU_HAS_PREFETCH
1811 prompt "MIPS MT options"
1813 config MIPS_MT_DISABLED
1814 bool "Disable multithreading support."
1816 Use this option if your workload can't take advantage of
1817 MIPS hardware multithreading support. On systems that don't have
1818 the option of an MT-enabled processor this option will be the only
1819 option in this menu.
1822 bool "Use 1 TC on each available VPE for SMP"
1823 depends on SYS_SUPPORTS_MULTITHREADING
1824 select CPU_MIPSR2_IRQ_VI
1825 select CPU_MIPSR2_IRQ_EI
1827 select NR_CPUS_DEFAULT_2
1829 select SYS_SUPPORTS_SCHED_SMT if SMP
1830 select SYS_SUPPORTS_SMP
1833 This is a kernel model which is known a VSMP but lately has been
1834 marketesed into SMVP.
1835 Virtual SMP uses the processor's VPEs to implement virtual
1836 processors. In currently available configuration of the 34K processor
1837 this allows for a dual processor. Both processors will share the same
1838 primary caches; each will obtain the half of the TLB for it's own
1839 exclusive use. For a layman this model can be described as similar to
1840 what Intel calls Hyperthreading.
1842 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1845 bool "SMTC: Use all TCs on all VPEs for SMP"
1846 depends on CPU_MIPS32_R2
1847 #depends on CPU_MIPS64_R2 # once there is hardware ...
1848 depends on SYS_SUPPORTS_MULTITHREADING
1849 select CPU_MIPSR2_IRQ_VI
1850 select CPU_MIPSR2_IRQ_EI
1852 select NR_CPUS_DEFAULT_8
1854 select SYS_SUPPORTS_SMP
1857 This is a kernel model which is known a SMTC or lately has been
1858 marketesed into SMVP.
1859 is presenting the available TC's of the core as processors to Linux.
1860 On currently available 34K processors this means a Linux system will
1861 see up to 5 processors. The implementation of the SMTC kernel differs
1862 significantly from VSMP and cannot efficiently coexist in the same
1863 kernel binary so the choice between VSMP and SMTC is a compile time
1866 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1874 bool "SMT (multithreading) scheduler support"
1875 depends on SYS_SUPPORTS_SCHED_SMT
1878 SMT scheduler support improves the CPU scheduler's decision making
1879 when dealing with MIPS MT enabled cores at a cost of slightly
1880 increased overhead in some places. If unsure say N here.
1882 config SYS_SUPPORTS_SCHED_SMT
1886 config SYS_SUPPORTS_MULTITHREADING
1889 config MIPS_MT_FPAFF
1890 bool "Dynamic FPU affinity for FP-intensive threads"
1892 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1894 config MIPS_VPE_LOADER
1895 bool "VPE loader support."
1896 depends on SYS_SUPPORTS_MULTITHREADING
1897 select CPU_MIPSR2_IRQ_VI
1898 select CPU_MIPSR2_IRQ_EI
1901 Includes a loader for loading an elf relocatable object
1902 onto another VPE and running it.
1904 config MIPS_MT_SMTC_IM_BACKSTOP
1905 bool "Use per-TC register bits as backstop for inhibited IM bits"
1906 depends on MIPS_MT_SMTC
1909 To support multiple TC microthreads acting as "CPUs" within
1910 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1911 during interrupt handling. To support legacy drivers and interrupt
1912 controller management code, SMTC has a "backstop" to track and
1913 if necessary restore the interrupt mask. This has some performance
1914 impact on interrupt service overhead.
1916 config MIPS_MT_SMTC_IRQAFF
1917 bool "Support IRQ affinity API"
1918 depends on MIPS_MT_SMTC
1921 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1922 for SMTC Linux kernel. Requires platform support, of which
1923 an example can be found in the MIPS kernel i8259 and Malta
1924 platform code. Adds some overhead to interrupt dispatch, and
1925 should be used only if you know what you are doing.
1927 config MIPS_VPE_LOADER_TOM
1928 bool "Load VPE program into memory hidden from linux"
1929 depends on MIPS_VPE_LOADER
1932 The loader can use memory that is present but has been hidden from
1933 Linux using the kernel command line option "mem=xxMB". It's up to
1934 you to ensure the amount you put in the option and the space your
1935 program requires is less or equal to the amount physically present.
1937 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1938 config MIPS_VPE_APSP_API
1939 bool "Enable support for AP/SP API (RTLX)"
1940 depends on MIPS_VPE_LOADER
1943 config MIPS_APSP_KSPD
1945 depends on MIPS_VPE_APSP_API
1948 KSPD is a kernel daemon that accepts syscall requests from the SP
1949 side, actions them and returns the results. It also handles the
1950 "exit" syscall notifying other kernel modules the SP program is
1951 exiting. You probably want to say yes here.
1954 bool "MIPS CMP framework support"
1955 depends on SYS_SUPPORTS_MIPS_CMP
1957 select SYS_SUPPORTS_SMP
1958 select SYS_SUPPORTS_SCHED_SMT if SMP
1959 select WEAK_ORDERING
1962 This is a placeholder option for the GCMP work. It will need to
1963 be handled differently...
1965 config SB1_PASS_1_WORKAROUNDS
1967 depends on CPU_SB1_PASS_1
1970 config SB1_PASS_2_WORKAROUNDS
1972 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1975 config SB1_PASS_2_1_WORKAROUNDS
1977 depends on CPU_SB1 && CPU_SB1_PASS_2
1980 config 64BIT_PHYS_ADDR
1983 config ARCH_PHYS_ADDR_T_64BIT
1984 def_bool 64BIT_PHYS_ADDR
1986 config CPU_HAS_SMARTMIPS
1987 depends on SYS_SUPPORTS_SMARTMIPS
1988 bool "Support for the SmartMIPS ASE"
1990 SmartMIPS is a extension of the MIPS32 architecture aimed at
1991 increased security at both hardware and software level for
1992 smartcards. Enabling this option will allow proper use of the
1993 SmartMIPS instructions by Linux applications. However a kernel with
1994 this option will not work on a MIPS core without SmartMIPS core. If
1995 you don't know you probably don't have SmartMIPS and should say N
2002 # Vectored interrupt mode is an R2 feature
2004 config CPU_MIPSR2_IRQ_VI
2008 # Extended interrupt mode is an R2 feature
2010 config CPU_MIPSR2_IRQ_EI
2015 depends on !CPU_R3000
2018 config GENERIC_CLOCKEVENTS_BROADCAST
2024 config CPU_DADDI_WORKAROUNDS
2027 config CPU_R4000_WORKAROUNDS
2029 select CPU_R4400_WORKAROUNDS
2031 config CPU_R4400_WORKAROUNDS
2035 # - Highmem only makes sense for the 32-bit kernel.
2036 # - The current highmem code will only work properly on physically indexed
2037 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2038 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2039 # moment we protect the user and offer the highmem option only on machines
2040 # where it's known to be safe. This will not offer highmem on a few systems
2041 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2042 # indexed CPUs but we're playing safe.
2043 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2044 # know they might have memory configurations that could make use of highmem
2048 bool "High Memory Support"
2049 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2051 config CPU_SUPPORTS_HIGHMEM
2054 config SYS_SUPPORTS_HIGHMEM
2057 config SYS_SUPPORTS_SMARTMIPS
2060 config ARCH_FLATMEM_ENABLE
2062 depends on !NUMA && !CPU_LOONGSON2
2064 config ARCH_DISCONTIGMEM_ENABLE
2066 default y if SGI_IP27
2068 Say Y to support efficient handling of discontiguous physical memory,
2069 for architectures which are either NUMA (Non-Uniform Memory Access)
2070 or have huge holes in the physical address space for other reasons.
2071 See <file:Documentation/vm/numa> for more.
2073 config ARCH_POPULATES_NODE_MAP
2076 config ARCH_SPARSEMEM_ENABLE
2078 select SPARSEMEM_STATIC
2082 depends on SYS_SUPPORTS_NUMA
2084 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2085 Access). This option improves performance on systems with more
2086 than two nodes; on two node systems it is generally better to
2087 leave it disabled; on single node systems disable this option
2090 config SYS_SUPPORTS_NUMA
2096 depends on NEED_MULTIPLE_NODES
2098 config HW_PERF_EVENTS
2099 bool "Enable hardware performance counter support for perf events"
2100 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2103 Enable hardware performance counter support for perf events. If
2104 disabled, perf events will use software events only.
2109 bool "Multi-Processing support"
2110 depends on SYS_SUPPORTS_SMP
2112 select USE_GENERIC_SMP_HELPERS
2114 This enables support for systems with more than one CPU. If you have
2115 a system with only one CPU, like most personal computers, say N. If
2116 you have a system with more than one CPU, say Y.
2118 If you say N here, the kernel will run on single and multiprocessor
2119 machines, but will use only one CPU of a multiprocessor machine. If
2120 you say Y here, the kernel will run on many, but not all,
2121 singleprocessor machines. On a singleprocessor machine, the kernel
2122 will run faster if you say N here.
2124 People using multiprocessor machines who say Y here should also say
2125 Y to "Enhanced Real Time Clock Support", below.
2127 See also the SMP-HOWTO available at
2128 <http://www.tldp.org/docs.html#howto>.
2130 If you don't know what to do here, say N.
2135 config SYS_SUPPORTS_MIPS_CMP
2138 config SYS_SUPPORTS_SMP
2141 config NR_CPUS_DEFAULT_1
2144 config NR_CPUS_DEFAULT_2
2147 config NR_CPUS_DEFAULT_4
2150 config NR_CPUS_DEFAULT_8
2153 config NR_CPUS_DEFAULT_16
2156 config NR_CPUS_DEFAULT_32
2159 config NR_CPUS_DEFAULT_64
2163 int "Maximum number of CPUs (2-64)"
2164 range 1 64 if NR_CPUS_DEFAULT_1
2166 default "1" if NR_CPUS_DEFAULT_1
2167 default "2" if NR_CPUS_DEFAULT_2
2168 default "4" if NR_CPUS_DEFAULT_4
2169 default "8" if NR_CPUS_DEFAULT_8
2170 default "16" if NR_CPUS_DEFAULT_16
2171 default "32" if NR_CPUS_DEFAULT_32
2172 default "64" if NR_CPUS_DEFAULT_64
2174 This allows you to specify the maximum number of CPUs which this
2175 kernel will support. The maximum supported value is 32 for 32-bit
2176 kernel and 64 for 64-bit kernels; the minimum value which makes
2177 sense is 1 for Qemu (useful only for kernel debugging purposes)
2178 and 2 for all others.
2180 This is purely to save memory - each supported CPU adds
2181 approximately eight kilobytes to the kernel image. For best
2182 performance should round up your number of processors to the next
2185 source "kernel/time/Kconfig"
2188 # Timer Interrupt Frequency Configuration
2192 prompt "Timer frequency"
2195 Allows the configuration of the timer frequency.
2198 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2201 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2204 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2207 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2210 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2213 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2216 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2220 config SYS_SUPPORTS_48HZ
2223 config SYS_SUPPORTS_100HZ
2226 config SYS_SUPPORTS_128HZ
2229 config SYS_SUPPORTS_250HZ
2232 config SYS_SUPPORTS_256HZ
2235 config SYS_SUPPORTS_1000HZ
2238 config SYS_SUPPORTS_1024HZ
2241 config SYS_SUPPORTS_ARBIT_HZ
2243 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2244 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2245 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2246 !SYS_SUPPORTS_1024HZ
2251 default 100 if HZ_100
2252 default 128 if HZ_128
2253 default 250 if HZ_250
2254 default 256 if HZ_256
2255 default 1000 if HZ_1000
2256 default 1024 if HZ_1024
2258 source "kernel/Kconfig.preempt"
2260 config MIPS_INSANE_LARGE
2261 bool "Support for large 64-bit configurations"
2262 depends on CPU_R10000 && 64BIT
2264 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2265 previous 64-bit processors which only supported 40 bit / 1TB. If you
2266 need processes of more than 1TB virtual address space, say Y here.
2267 This will result in additional memory usage, so it is not
2268 recommended for normal users.
2271 bool "Kexec system call (EXPERIMENTAL)"
2272 depends on EXPERIMENTAL
2274 kexec is a system call that implements the ability to shutdown your
2275 current kernel, and to start another kernel. It is like a reboot
2276 but it is independent of the system firmware. And like a reboot
2277 you can start any kernel with it, not just Linux.
2279 The name comes from the similarity to the exec system call.
2281 It is an ongoing process to be certain the hardware in a machine
2282 is properly shutdown, so do not be surprised if this code does not
2283 initially work for you. It may help to enable device hotplugging
2284 support. As of this writing the exact hardware interface is
2285 strongly in flux, so no good recommendation can be made.
2288 bool "Enable seccomp to safely compute untrusted bytecode"
2292 This kernel feature is useful for number crunching applications
2293 that may need to compute untrusted bytecode during their
2294 execution. By using pipes or other transports made available to
2295 the process as file descriptors supporting the read/write
2296 syscalls, it's possible to isolate those applications in
2297 their own address space using seccomp. Once seccomp is
2298 enabled via /proc/<pid>/seccomp, it cannot be disabled
2299 and the task is only allowed to execute a few safe syscalls
2300 defined by each seccomp mode.
2302 If unsure, say Y. Only embedded should say N here.
2305 bool "Flattened Device Tree support"
2307 select OF_EARLY_FLATTREE
2309 Include support for flattened device tree machine descriptions.
2313 config LOCKDEP_SUPPORT
2317 config STACKTRACE_SUPPORT
2321 source "init/Kconfig"
2323 source "kernel/Kconfig.freezer"
2325 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2333 bool "Support for PCI controller"
2334 depends on HW_HAS_PCI
2337 Find out whether you have a PCI motherboard. PCI is the name of a
2338 bus system, i.e. the way the CPU talks to the other stuff inside
2339 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2345 source "drivers/pci/Kconfig"
2348 # ISA support is now enabled via select. Too many systems still have the one
2349 # or other ISA chip on the board that users don't know about so don't expect
2350 # users to choose the right thing ...
2357 depends on HW_HAS_EISA
2359 select GENERIC_ISA_DMA
2361 The Extended Industry Standard Architecture (EISA) bus was
2362 developed as an open alternative to the IBM MicroChannel bus.
2364 The EISA bus provided some of the features of the IBM MicroChannel
2365 bus while maintaining backward compatibility with cards made for
2366 the older ISA bus. The EISA bus saw limited use between 1988 and
2367 1995 when it was made obsolete by the PCI bus.
2369 Say Y here if you are building a kernel for an EISA-based machine.
2373 source "drivers/eisa/Kconfig"
2376 bool "TURBOchannel support"
2377 depends on MACH_DECSTATION
2379 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2380 processors. TURBOchannel programming specifications are available
2382 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2384 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2385 Linux driver support status is documented at:
2386 <http://www.linux-mips.org/wiki/DECstation>
2389 # bool "Access.Bus support"
2399 select MIPS_EXTERNAL_TIMER
2404 source "drivers/pcmcia/Kconfig"
2406 source "drivers/pci/hotplug/Kconfig"
2409 bool "RapidIO support"
2413 If you say Y here, the kernel will include drivers and
2414 infrastructure code to support RapidIO interconnect devices.
2416 source "drivers/rapidio/Kconfig"
2420 menu "Executable file formats"
2422 source "fs/Kconfig.binfmt"
2427 config MIPS32_COMPAT
2428 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2431 Select this option if you want Linux/MIPS 32-bit binary
2432 compatibility. Since all software available for Linux/MIPS is
2433 currently 32-bit you should say Y here.
2437 depends on MIPS32_COMPAT
2440 config SYSVIPC_COMPAT
2442 depends on COMPAT && SYSVIPC
2446 bool "Kernel support for o32 binaries"
2447 depends on MIPS32_COMPAT
2449 Select this option if you want to run o32 binaries. These are pure
2450 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2451 existing binaries are in this format.
2456 bool "Kernel support for n32 binaries"
2457 depends on MIPS32_COMPAT
2459 Select this option if you want to run n32 binaries. These are
2460 64-bit binaries using 32-bit quantities for addressing and certain
2461 data that would normally be 64-bit. They are used in special
2468 default y if MIPS32_O32 || MIPS32_N32
2472 menu "Power management options"
2474 config ARCH_HIBERNATION_POSSIBLE
2476 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2478 config ARCH_SUSPEND_POSSIBLE
2480 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2482 source "kernel/power/Kconfig"
2486 source "arch/mips/kernel/cpufreq/Kconfig"
2488 source "net/Kconfig"
2490 source "drivers/Kconfig"
2494 source "arch/mips/Kconfig.debug"
2496 source "security/Kconfig"
2498 source "crypto/Kconfig"
2500 menuconfig VIRTUALIZATION
2501 bool "Virtualization"
2504 Say Y here to get to see options for using your Linux host to run other
2505 operating systems inside virtual machines (guests).
2506 This option alone does not add any kernel code.
2508 If you say N, all options in this submenu will be skipped and disabled.
2512 source drivers/virtio/Kconfig
2514 endif # VIRTUALIZATION
2516 source "lib/Kconfig"