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_HWEIGHT
828 config GENERIC_CALIBRATE_DELAY
832 config GENERIC_CLOCKEVENTS
836 config GENERIC_CMOS_UPDATE
840 config SCHED_OMIT_FRAME_POINTER
845 # Select some configuration options automatically based on user selections.
850 config ARCH_MAY_HAVE_PC_FDC
899 select ARCH_REQUIRE_GPIOLIB
905 config ARCH_DMA_ADDR_T_64BIT
906 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
911 config DMA_NONCOHERENT
913 select NEED_DMA_MAP_STATE
915 config NEED_DMA_MAP_STATE
918 config SYS_HAS_EARLY_PRINTK
922 bool "Support for hot-pluggable CPUs"
923 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
925 Say Y here to allow turning CPUs off and on. CPUs can be
926 controlled through /sys/devices/system/cpu.
927 (Note: power management support will enable this option
928 automatically on SMP systems. )
929 Say N if you want to disable CPU hotplug.
931 config SYS_SUPPORTS_HOTPLUG_CPU
946 config MIPS_DISABLE_OBSOLETE_IDE
958 config GENERIC_ISA_DMA
960 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
963 config GENERIC_ISA_DMA_SUPPORT_BROKEN
965 select GENERIC_ISA_DMA
974 # Endianess selection. Sufficiently obscure so many users don't know what to
975 # answer,so we try hard to limit the available choices. Also the use of a
976 # choice statement should be more obvious to the user.
979 prompt "Endianess selection"
981 Some MIPS machines can be configured for either little or big endian
982 byte order. These modes require different kernels and a different
983 Linux distribution. In general there is one preferred byteorder for a
984 particular system but some systems are just as commonly used in the
985 one or the other endianness.
987 config CPU_BIG_ENDIAN
989 depends on SYS_SUPPORTS_BIG_ENDIAN
991 config CPU_LITTLE_ENDIAN
993 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1001 config SYS_SUPPORTS_APM_EMULATION
1004 config SYS_SUPPORTS_BIG_ENDIAN
1007 config SYS_SUPPORTS_LITTLE_ENDIAN
1010 config SYS_SUPPORTS_HUGETLBFS
1012 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1039 config MIPS_BOARDS_GEN
1042 config PCI_GT64XXX_PCI0
1045 config NO_EXCEPT_FILL
1050 select SERIAL_RM9000
1056 select DMA_NONCOHERENT
1058 select SWAP_IO_SPACE
1059 select SYS_HAS_CPU_R5500
1060 select SYS_SUPPORTS_32BIT_KERNEL
1061 select SYS_SUPPORTS_64BIT_KERNEL
1062 select SYS_SUPPORTS_BIG_ENDIAN
1069 select DMA_NONCOHERENT
1070 select SYS_HAS_CPU_MIPS32_R2
1071 select SYS_SUPPORTS_32BIT_KERNEL
1072 select SYS_SUPPORTS_LITTLE_ENDIAN
1073 select SYS_SUPPORTS_BIG_ENDIAN
1075 select CPU_MIPSR2_IRQ_VI
1087 select DMA_NONCOHERENT
1089 select SYS_HAS_CPU_MIPS32_R1
1090 select SYS_HAS_EARLY_PRINTK
1091 select SYS_SUPPORTS_32BIT_KERNEL
1094 config SWAP_IO_SPACE
1097 config SERIAL_RM9000
1100 config SGI_HAS_INDYDOG
1112 config SGI_HAS_ZILOG
1115 config SGI_HAS_I8042
1118 config DEFAULT_SGI_PARTITION
1130 config MIPS_L1_CACHE_SHIFT
1132 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1133 default "6" if MIPS_CPU_SCACHE
1134 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1137 config HAVE_STD_PC_SERIAL_PORT
1141 bool "ARC console support"
1142 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1146 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1151 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1160 menu "CPU selection"
1166 config CPU_LOONGSON2E
1168 depends on SYS_HAS_CPU_LOONGSON2E
1169 select CPU_LOONGSON2
1171 The Loongson 2E processor implements the MIPS III instruction set
1172 with many extensions.
1174 It has an internal FPGA northbridge, which is compatible to
1177 config CPU_LOONGSON2F
1179 depends on SYS_HAS_CPU_LOONGSON2F
1180 select CPU_LOONGSON2
1182 select ARCH_REQUIRE_GPIOLIB
1184 The Loongson 2F processor implements the MIPS III instruction set
1185 with many extensions.
1187 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1188 have a similar programming interface with FPGA northbridge used in
1191 config CPU_MIPS32_R1
1192 bool "MIPS32 Release 1"
1193 depends on SYS_HAS_CPU_MIPS32_R1
1194 select CPU_HAS_PREFETCH
1195 select CPU_SUPPORTS_32BIT_KERNEL
1196 select CPU_SUPPORTS_HIGHMEM
1198 Choose this option to build a kernel for release 1 or later of the
1199 MIPS32 architecture. Most modern embedded systems with a 32-bit
1200 MIPS processor are based on a MIPS32 processor. If you know the
1201 specific type of processor in your system, choose those that one
1202 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1203 Release 2 of the MIPS32 architecture is available since several
1204 years so chances are you even have a MIPS32 Release 2 processor
1205 in which case you should choose CPU_MIPS32_R2 instead for better
1208 config CPU_MIPS32_R2
1209 bool "MIPS32 Release 2"
1210 depends on SYS_HAS_CPU_MIPS32_R2
1211 select CPU_HAS_PREFETCH
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_HIGHMEM
1215 Choose this option to build a kernel for release 2 or later of the
1216 MIPS32 architecture. Most modern embedded systems with a 32-bit
1217 MIPS processor are based on a MIPS32 processor. If you know the
1218 specific type of processor in your system, choose those that one
1219 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1221 config CPU_MIPS64_R1
1222 bool "MIPS64 Release 1"
1223 depends on SYS_HAS_CPU_MIPS64_R1
1224 select CPU_HAS_PREFETCH
1225 select CPU_SUPPORTS_32BIT_KERNEL
1226 select CPU_SUPPORTS_64BIT_KERNEL
1227 select CPU_SUPPORTS_HIGHMEM
1228 select CPU_SUPPORTS_HUGEPAGES
1230 Choose this option to build a kernel for release 1 or later of the
1231 MIPS64 architecture. Many modern embedded systems with a 64-bit
1232 MIPS processor are based on a MIPS64 processor. If you know the
1233 specific type of processor in your system, choose those that one
1234 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1235 Release 2 of the MIPS64 architecture is available since several
1236 years so chances are you even have a MIPS64 Release 2 processor
1237 in which case you should choose CPU_MIPS64_R2 instead for better
1240 config CPU_MIPS64_R2
1241 bool "MIPS64 Release 2"
1242 depends on SYS_HAS_CPU_MIPS64_R2
1243 select CPU_HAS_PREFETCH
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1246 select CPU_SUPPORTS_HIGHMEM
1247 select CPU_SUPPORTS_HUGEPAGES
1249 Choose this option to build a kernel for release 2 or later of the
1250 MIPS64 architecture. Many modern embedded systems with a 64-bit
1251 MIPS processor are based on a MIPS64 processor. If you know the
1252 specific type of processor in your system, choose those that one
1253 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1257 depends on SYS_HAS_CPU_R3000
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_HIGHMEM
1262 Please make sure to pick the right CPU type. Linux/MIPS is not
1263 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1264 *not* work on R4000 machines and vice versa. However, since most
1265 of the supported machines have an R4000 (or similar) CPU, R4x00
1266 might be a safe bet. If the resulting kernel does not work,
1267 try to recompile with R3000.
1271 depends on SYS_HAS_CPU_TX39XX
1272 select CPU_SUPPORTS_32BIT_KERNEL
1276 depends on SYS_HAS_CPU_VR41XX
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1280 The options selects support for the NEC VR4100 series of processors.
1281 Only choose this option if you have one of these processors as a
1282 kernel built with this option will not run on any other type of
1283 processor or vice versa.
1287 depends on SYS_HAS_CPU_R4300
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_64BIT_KERNEL
1291 MIPS Technologies R4300-series processors.
1295 depends on SYS_HAS_CPU_R4X00
1296 select CPU_SUPPORTS_32BIT_KERNEL
1297 select CPU_SUPPORTS_64BIT_KERNEL
1299 MIPS Technologies R4000-series processors other than 4300, including
1300 the R4000, R4400, R4600, and 4700.
1304 depends on SYS_HAS_CPU_TX49XX
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1311 depends on SYS_HAS_CPU_R5000
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_64BIT_KERNEL
1315 MIPS Technologies R5000-series processors other than the Nevada.
1319 depends on SYS_HAS_CPU_R5432
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1325 depends on SYS_HAS_CPU_R5500
1326 select CPU_SUPPORTS_32BIT_KERNEL
1327 select CPU_SUPPORTS_64BIT_KERNEL
1328 select CPU_SUPPORTS_HUGEPAGES
1330 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1335 depends on EXPERIMENTAL
1336 depends on SYS_HAS_CPU_R6000
1337 select CPU_SUPPORTS_32BIT_KERNEL
1339 MIPS Technologies R6000 and R6000A series processors. Note these
1340 processors are extremely rare and the support for them is incomplete.
1344 depends on SYS_HAS_CPU_NEVADA
1345 select CPU_SUPPORTS_32BIT_KERNEL
1346 select CPU_SUPPORTS_64BIT_KERNEL
1348 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1352 depends on EXPERIMENTAL
1353 depends on SYS_HAS_CPU_R8000
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_64BIT_KERNEL
1357 MIPS Technologies R8000 processors. Note these processors are
1358 uncommon and the support for them is incomplete.
1362 depends on SYS_HAS_CPU_R10000
1363 select CPU_HAS_PREFETCH
1364 select CPU_SUPPORTS_32BIT_KERNEL
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1368 MIPS Technologies R10000-series processors.
1372 depends on SYS_HAS_CPU_RM7000
1373 select CPU_HAS_PREFETCH
1374 select CPU_SUPPORTS_32BIT_KERNEL
1375 select CPU_SUPPORTS_64BIT_KERNEL
1376 select CPU_SUPPORTS_HIGHMEM
1380 depends on SYS_HAS_CPU_RM9000
1381 select CPU_HAS_PREFETCH
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select CPU_SUPPORTS_HIGHMEM
1385 select WEAK_ORDERING
1389 depends on SYS_HAS_CPU_SB1
1390 select CPU_SUPPORTS_32BIT_KERNEL
1391 select CPU_SUPPORTS_64BIT_KERNEL
1392 select CPU_SUPPORTS_HIGHMEM
1393 select WEAK_ORDERING
1395 config CPU_CAVIUM_OCTEON
1396 bool "Cavium Octeon processor"
1397 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1398 select CPU_HAS_PREFETCH
1399 select CPU_SUPPORTS_64BIT_KERNEL
1400 select SYS_SUPPORTS_SMP
1401 select NR_CPUS_DEFAULT_16
1402 select WEAK_ORDERING
1403 select CPU_SUPPORTS_HIGHMEM
1404 select CPU_SUPPORTS_HUGEPAGES
1406 The Cavium Octeon processor is a highly integrated chip containing
1407 many ethernet hardware widgets for networking tasks. The processor
1408 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1409 Full details can be found at http://www.caviumnetworks.com.
1411 config CPU_BMIPS3300
1413 depends on SYS_HAS_CPU_BMIPS3300
1414 select DMA_NONCOHERENT
1416 select SWAP_IO_SPACE
1417 select SYS_SUPPORTS_32BIT_KERNEL
1418 select WEAK_ORDERING
1420 Broadcom BMIPS3300 processors.
1422 config CPU_BMIPS4350
1424 depends on SYS_HAS_CPU_BMIPS4350
1425 select CPU_SUPPORTS_32BIT_KERNEL
1426 select DMA_NONCOHERENT
1428 select SWAP_IO_SPACE
1429 select SYS_SUPPORTS_SMP
1430 select SYS_SUPPORTS_HOTPLUG_CPU
1431 select WEAK_ORDERING
1433 Broadcom BMIPS4350 ("VIPER") processors.
1435 config CPU_BMIPS4380
1437 depends on SYS_HAS_CPU_BMIPS4380
1438 select CPU_SUPPORTS_32BIT_KERNEL
1439 select DMA_NONCOHERENT
1441 select SWAP_IO_SPACE
1442 select SYS_SUPPORTS_SMP
1443 select SYS_SUPPORTS_HOTPLUG_CPU
1444 select WEAK_ORDERING
1446 Broadcom BMIPS4380 processors.
1448 config CPU_BMIPS5000
1450 depends on SYS_HAS_CPU_BMIPS5000
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1453 select DMA_NONCOHERENT
1455 select SWAP_IO_SPACE
1456 select SYS_SUPPORTS_SMP
1457 select SYS_SUPPORTS_HOTPLUG_CPU
1458 select WEAK_ORDERING
1460 Broadcom BMIPS5000 processors.
1463 bool "Netlogic XLR SoC"
1464 depends on SYS_HAS_CPU_XLR
1465 select CPU_SUPPORTS_32BIT_KERNEL
1466 select CPU_SUPPORTS_64BIT_KERNEL
1467 select CPU_SUPPORTS_HIGHMEM
1468 select WEAK_ORDERING
1469 select WEAK_REORDERING_BEYOND_LLSC
1470 select CPU_SUPPORTS_HUGEPAGES
1472 Netlogic Microsystems XLR/XLS processors.
1476 config CPU_NOP_WORKAROUNDS
1479 config CPU_JUMP_WORKAROUNDS
1482 config CPU_LOONGSON2F_WORKAROUNDS
1483 bool "Loongson 2F Workarounds"
1485 select CPU_NOP_WORKAROUNDS
1486 select CPU_JUMP_WORKAROUNDS
1488 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1489 require workarounds. Without workarounds the system may hang
1490 unexpectedly. For more information please refer to the gas
1491 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1493 Loongson 2F03 and later have fixed these issues and no workarounds
1494 are needed. The workarounds have no significant side effect on them
1495 but may decrease the performance of the system so this option should
1496 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1499 If unsure, please say Y.
1500 endif # CPU_LOONGSON2F
1502 config SYS_SUPPORTS_ZBOOT
1504 select HAVE_KERNEL_GZIP
1505 select HAVE_KERNEL_BZIP2
1506 select HAVE_KERNEL_LZMA
1507 select HAVE_KERNEL_LZO
1509 config SYS_SUPPORTS_ZBOOT_UART16550
1511 select SYS_SUPPORTS_ZBOOT
1513 config CPU_LOONGSON2
1515 select CPU_SUPPORTS_32BIT_KERNEL
1516 select CPU_SUPPORTS_64BIT_KERNEL
1517 select CPU_SUPPORTS_HIGHMEM
1519 config SYS_HAS_CPU_LOONGSON2E
1522 config SYS_HAS_CPU_LOONGSON2F
1524 select CPU_SUPPORTS_CPUFREQ
1525 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1526 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1528 config SYS_HAS_CPU_MIPS32_R1
1531 config SYS_HAS_CPU_MIPS32_R2
1534 config SYS_HAS_CPU_MIPS64_R1
1537 config SYS_HAS_CPU_MIPS64_R2
1540 config SYS_HAS_CPU_R3000
1543 config SYS_HAS_CPU_TX39XX
1546 config SYS_HAS_CPU_VR41XX
1549 config SYS_HAS_CPU_R4300
1552 config SYS_HAS_CPU_R4X00
1555 config SYS_HAS_CPU_TX49XX
1558 config SYS_HAS_CPU_R5000
1561 config SYS_HAS_CPU_R5432
1564 config SYS_HAS_CPU_R5500
1567 config SYS_HAS_CPU_R6000
1570 config SYS_HAS_CPU_NEVADA
1573 config SYS_HAS_CPU_R8000
1576 config SYS_HAS_CPU_R10000
1579 config SYS_HAS_CPU_RM7000
1582 config SYS_HAS_CPU_RM9000
1585 config SYS_HAS_CPU_SB1
1588 config SYS_HAS_CPU_CAVIUM_OCTEON
1591 config SYS_HAS_CPU_BMIPS3300
1594 config SYS_HAS_CPU_BMIPS4350
1597 config SYS_HAS_CPU_BMIPS4380
1600 config SYS_HAS_CPU_BMIPS5000
1603 config SYS_HAS_CPU_XLR
1607 # CPU may reorder R->R, R->W, W->R, W->W
1608 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1610 config WEAK_ORDERING
1614 # CPU may reorder reads and writes beyond LL/SC
1615 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1617 config WEAK_REORDERING_BEYOND_LLSC
1622 # These two indicate any level of the MIPS32 and MIPS64 architecture
1626 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1630 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1633 # These two indicate the revision of the architecture, either Release 1 or Release 2
1637 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1641 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1643 config SYS_SUPPORTS_32BIT_KERNEL
1645 config SYS_SUPPORTS_64BIT_KERNEL
1647 config CPU_SUPPORTS_32BIT_KERNEL
1649 config CPU_SUPPORTS_64BIT_KERNEL
1651 config CPU_SUPPORTS_CPUFREQ
1653 config CPU_SUPPORTS_ADDRWINCFG
1655 config CPU_SUPPORTS_HUGEPAGES
1657 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1659 config MIPS_PGD_C0_CONTEXT
1661 default y if 64BIT && CPU_MIPSR2
1664 # Set to y for ptrace access to watch registers.
1666 config HARDWARE_WATCHPOINTS
1668 default y if CPU_MIPSR1 || CPU_MIPSR2
1674 prompt "Kernel code model"
1676 You should only select this option if you have a workload that
1677 actually benefits from 64-bit processing or if your machine has
1678 large memory. You will only be presented a single option in this
1679 menu if your system does not support both 32-bit and 64-bit kernels.
1682 bool "32-bit kernel"
1683 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1686 Select this option if you want to build a 32-bit kernel.
1688 bool "64-bit kernel"
1689 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1690 select HAVE_SYSCALL_WRAPPERS
1692 Select this option if you want to build a 64-bit kernel.
1697 prompt "Kernel page size"
1698 default PAGE_SIZE_4KB
1700 config PAGE_SIZE_4KB
1702 depends on !CPU_LOONGSON2
1704 This option select the standard 4kB Linux page size. On some
1705 R3000-family processors this is the only available page size. Using
1706 4kB page size will minimize memory consumption and is therefore
1707 recommended for low memory systems.
1709 config PAGE_SIZE_8KB
1711 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1713 Using 8kB page size will result in higher performance kernel at
1714 the price of higher memory consumption. This option is available
1715 only on R8000 and cnMIPS processors. Note that you will need a
1716 suitable Linux distribution to support this.
1718 config PAGE_SIZE_16KB
1720 depends on !CPU_R3000 && !CPU_TX39XX
1722 Using 16kB page size will result in higher performance kernel at
1723 the price of higher memory consumption. This option is available on
1724 all non-R3000 family processors. Note that you will need a suitable
1725 Linux distribution to support this.
1727 config PAGE_SIZE_32KB
1729 depends on CPU_CAVIUM_OCTEON
1731 Using 32kB page size will result in higher performance kernel at
1732 the price of higher memory consumption. This option is available
1733 only on cnMIPS cores. Note that you will need a suitable Linux
1734 distribution to support this.
1736 config PAGE_SIZE_64KB
1738 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1740 Using 64kB page size will result in higher performance kernel at
1741 the price of higher memory consumption. This option is available on
1742 all non-R3000 family processor. Not that at the time of this
1743 writing this option is still high experimental.
1747 config FORCE_MAX_ZONEORDER
1748 int "Maximum zone order"
1749 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1750 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1751 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1752 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1756 The kernel memory allocator divides physically contiguous memory
1757 blocks into "zones", where each zone is a power of two number of
1758 pages. This option selects the largest power of two that the kernel
1759 keeps in the memory allocator. If you need to allocate very large
1760 blocks of physically contiguous memory, then you may need to
1761 increase this value.
1763 This config option is actually maximum order plus one. For example,
1764 a value of 11 means that the largest free memory block is 2^10 pages.
1766 The page size is not necessarily 4KB. Keep this in mind
1767 when choosing a value for this option.
1772 config IP22_CPU_SCACHE
1777 # Support for a MIPS32 / MIPS64 style S-caches
1779 config MIPS_CPU_SCACHE
1783 config R5000_CPU_SCACHE
1787 config RM7000_CPU_SCACHE
1791 config SIBYTE_DMA_PAGEOPS
1792 bool "Use DMA to clear/copy pages"
1795 Instead of using the CPU to zero and copy pages, use a Data Mover
1796 channel. These DMA channels are otherwise unused by the standard
1797 SiByte Linux port. Seems to give a small performance benefit.
1799 config CPU_HAS_PREFETCH
1803 prompt "MIPS MT options"
1805 config MIPS_MT_DISABLED
1806 bool "Disable multithreading support."
1808 Use this option if your workload can't take advantage of
1809 MIPS hardware multithreading support. On systems that don't have
1810 the option of an MT-enabled processor this option will be the only
1811 option in this menu.
1814 bool "Use 1 TC on each available VPE for SMP"
1815 depends on SYS_SUPPORTS_MULTITHREADING
1816 select CPU_MIPSR2_IRQ_VI
1817 select CPU_MIPSR2_IRQ_EI
1819 select NR_CPUS_DEFAULT_2
1821 select SYS_SUPPORTS_SCHED_SMT if SMP
1822 select SYS_SUPPORTS_SMP
1825 This is a kernel model which is known a VSMP but lately has been
1826 marketesed into SMVP.
1827 Virtual SMP uses the processor's VPEs to implement virtual
1828 processors. In currently available configuration of the 34K processor
1829 this allows for a dual processor. Both processors will share the same
1830 primary caches; each will obtain the half of the TLB for it's own
1831 exclusive use. For a layman this model can be described as similar to
1832 what Intel calls Hyperthreading.
1834 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1837 bool "SMTC: Use all TCs on all VPEs for SMP"
1838 depends on CPU_MIPS32_R2
1839 #depends on CPU_MIPS64_R2 # once there is hardware ...
1840 depends on SYS_SUPPORTS_MULTITHREADING
1841 select CPU_MIPSR2_IRQ_VI
1842 select CPU_MIPSR2_IRQ_EI
1844 select NR_CPUS_DEFAULT_8
1846 select SYS_SUPPORTS_SMP
1849 This is a kernel model which is known a SMTC or lately has been
1850 marketesed into SMVP.
1851 is presenting the available TC's of the core as processors to Linux.
1852 On currently available 34K processors this means a Linux system will
1853 see up to 5 processors. The implementation of the SMTC kernel differs
1854 significantly from VSMP and cannot efficiently coexist in the same
1855 kernel binary so the choice between VSMP and SMTC is a compile time
1858 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1866 bool "SMT (multithreading) scheduler support"
1867 depends on SYS_SUPPORTS_SCHED_SMT
1870 SMT scheduler support improves the CPU scheduler's decision making
1871 when dealing with MIPS MT enabled cores at a cost of slightly
1872 increased overhead in some places. If unsure say N here.
1874 config SYS_SUPPORTS_SCHED_SMT
1878 config SYS_SUPPORTS_MULTITHREADING
1881 config MIPS_MT_FPAFF
1882 bool "Dynamic FPU affinity for FP-intensive threads"
1884 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1886 config MIPS_VPE_LOADER
1887 bool "VPE loader support."
1888 depends on SYS_SUPPORTS_MULTITHREADING
1889 select CPU_MIPSR2_IRQ_VI
1890 select CPU_MIPSR2_IRQ_EI
1893 Includes a loader for loading an elf relocatable object
1894 onto another VPE and running it.
1896 config MIPS_MT_SMTC_IM_BACKSTOP
1897 bool "Use per-TC register bits as backstop for inhibited IM bits"
1898 depends on MIPS_MT_SMTC
1901 To support multiple TC microthreads acting as "CPUs" within
1902 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1903 during interrupt handling. To support legacy drivers and interrupt
1904 controller management code, SMTC has a "backstop" to track and
1905 if necessary restore the interrupt mask. This has some performance
1906 impact on interrupt service overhead.
1908 config MIPS_MT_SMTC_IRQAFF
1909 bool "Support IRQ affinity API"
1910 depends on MIPS_MT_SMTC
1913 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1914 for SMTC Linux kernel. Requires platform support, of which
1915 an example can be found in the MIPS kernel i8259 and Malta
1916 platform code. Adds some overhead to interrupt dispatch, and
1917 should be used only if you know what you are doing.
1919 config MIPS_VPE_LOADER_TOM
1920 bool "Load VPE program into memory hidden from linux"
1921 depends on MIPS_VPE_LOADER
1924 The loader can use memory that is present but has been hidden from
1925 Linux using the kernel command line option "mem=xxMB". It's up to
1926 you to ensure the amount you put in the option and the space your
1927 program requires is less or equal to the amount physically present.
1929 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1930 config MIPS_VPE_APSP_API
1931 bool "Enable support for AP/SP API (RTLX)"
1932 depends on MIPS_VPE_LOADER
1935 config MIPS_APSP_KSPD
1937 depends on MIPS_VPE_APSP_API
1940 KSPD is a kernel daemon that accepts syscall requests from the SP
1941 side, actions them and returns the results. It also handles the
1942 "exit" syscall notifying other kernel modules the SP program is
1943 exiting. You probably want to say yes here.
1946 bool "MIPS CMP framework support"
1947 depends on SYS_SUPPORTS_MIPS_CMP
1949 select SYS_SUPPORTS_SMP
1950 select SYS_SUPPORTS_SCHED_SMT if SMP
1951 select WEAK_ORDERING
1954 This is a placeholder option for the GCMP work. It will need to
1955 be handled differently...
1957 config SB1_PASS_1_WORKAROUNDS
1959 depends on CPU_SB1_PASS_1
1962 config SB1_PASS_2_WORKAROUNDS
1964 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1967 config SB1_PASS_2_1_WORKAROUNDS
1969 depends on CPU_SB1 && CPU_SB1_PASS_2
1972 config 64BIT_PHYS_ADDR
1975 config ARCH_PHYS_ADDR_T_64BIT
1976 def_bool 64BIT_PHYS_ADDR
1978 config CPU_HAS_SMARTMIPS
1979 depends on SYS_SUPPORTS_SMARTMIPS
1980 bool "Support for the SmartMIPS ASE"
1982 SmartMIPS is a extension of the MIPS32 architecture aimed at
1983 increased security at both hardware and software level for
1984 smartcards. Enabling this option will allow proper use of the
1985 SmartMIPS instructions by Linux applications. However a kernel with
1986 this option will not work on a MIPS core without SmartMIPS core. If
1987 you don't know you probably don't have SmartMIPS and should say N
1994 # Vectored interrupt mode is an R2 feature
1996 config CPU_MIPSR2_IRQ_VI
2000 # Extended interrupt mode is an R2 feature
2002 config CPU_MIPSR2_IRQ_EI
2007 depends on !CPU_R3000
2010 config GENERIC_CLOCKEVENTS_BROADCAST
2016 config CPU_DADDI_WORKAROUNDS
2019 config CPU_R4000_WORKAROUNDS
2021 select CPU_R4400_WORKAROUNDS
2023 config CPU_R4400_WORKAROUNDS
2027 # - Highmem only makes sense for the 32-bit kernel.
2028 # - The current highmem code will only work properly on physically indexed
2029 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2030 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2031 # moment we protect the user and offer the highmem option only on machines
2032 # where it's known to be safe. This will not offer highmem on a few systems
2033 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2034 # indexed CPUs but we're playing safe.
2035 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2036 # know they might have memory configurations that could make use of highmem
2040 bool "High Memory Support"
2041 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2043 config CPU_SUPPORTS_HIGHMEM
2046 config SYS_SUPPORTS_HIGHMEM
2049 config SYS_SUPPORTS_SMARTMIPS
2052 config ARCH_FLATMEM_ENABLE
2054 depends on !NUMA && !CPU_LOONGSON2
2056 config ARCH_DISCONTIGMEM_ENABLE
2058 default y if SGI_IP27
2060 Say Y to support efficient handling of discontiguous physical memory,
2061 for architectures which are either NUMA (Non-Uniform Memory Access)
2062 or have huge holes in the physical address space for other reasons.
2063 See <file:Documentation/vm/numa> for more.
2065 config ARCH_POPULATES_NODE_MAP
2068 config ARCH_SPARSEMEM_ENABLE
2070 select SPARSEMEM_STATIC
2074 depends on SYS_SUPPORTS_NUMA
2076 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2077 Access). This option improves performance on systems with more
2078 than two nodes; on two node systems it is generally better to
2079 leave it disabled; on single node systems disable this option
2082 config SYS_SUPPORTS_NUMA
2088 depends on NEED_MULTIPLE_NODES
2090 config HW_PERF_EVENTS
2091 bool "Enable hardware performance counter support for perf events"
2092 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2095 Enable hardware performance counter support for perf events. If
2096 disabled, perf events will use software events only.
2101 bool "Multi-Processing support"
2102 depends on SYS_SUPPORTS_SMP
2104 select USE_GENERIC_SMP_HELPERS
2106 This enables support for systems with more than one CPU. If you have
2107 a system with only one CPU, like most personal computers, say N. If
2108 you have a system with more than one CPU, say Y.
2110 If you say N here, the kernel will run on single and multiprocessor
2111 machines, but will use only one CPU of a multiprocessor machine. If
2112 you say Y here, the kernel will run on many, but not all,
2113 singleprocessor machines. On a singleprocessor machine, the kernel
2114 will run faster if you say N here.
2116 People using multiprocessor machines who say Y here should also say
2117 Y to "Enhanced Real Time Clock Support", below.
2119 See also the SMP-HOWTO available at
2120 <http://www.tldp.org/docs.html#howto>.
2122 If you don't know what to do here, say N.
2127 config SYS_SUPPORTS_MIPS_CMP
2130 config SYS_SUPPORTS_SMP
2133 config NR_CPUS_DEFAULT_1
2136 config NR_CPUS_DEFAULT_2
2139 config NR_CPUS_DEFAULT_4
2142 config NR_CPUS_DEFAULT_8
2145 config NR_CPUS_DEFAULT_16
2148 config NR_CPUS_DEFAULT_32
2151 config NR_CPUS_DEFAULT_64
2155 int "Maximum number of CPUs (2-64)"
2156 range 1 64 if NR_CPUS_DEFAULT_1
2158 default "1" if NR_CPUS_DEFAULT_1
2159 default "2" if NR_CPUS_DEFAULT_2
2160 default "4" if NR_CPUS_DEFAULT_4
2161 default "8" if NR_CPUS_DEFAULT_8
2162 default "16" if NR_CPUS_DEFAULT_16
2163 default "32" if NR_CPUS_DEFAULT_32
2164 default "64" if NR_CPUS_DEFAULT_64
2166 This allows you to specify the maximum number of CPUs which this
2167 kernel will support. The maximum supported value is 32 for 32-bit
2168 kernel and 64 for 64-bit kernels; the minimum value which makes
2169 sense is 1 for Qemu (useful only for kernel debugging purposes)
2170 and 2 for all others.
2172 This is purely to save memory - each supported CPU adds
2173 approximately eight kilobytes to the kernel image. For best
2174 performance should round up your number of processors to the next
2177 source "kernel/time/Kconfig"
2180 # Timer Interrupt Frequency Configuration
2184 prompt "Timer frequency"
2187 Allows the configuration of the timer frequency.
2190 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2193 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2196 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2199 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2202 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2205 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2208 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2212 config SYS_SUPPORTS_48HZ
2215 config SYS_SUPPORTS_100HZ
2218 config SYS_SUPPORTS_128HZ
2221 config SYS_SUPPORTS_250HZ
2224 config SYS_SUPPORTS_256HZ
2227 config SYS_SUPPORTS_1000HZ
2230 config SYS_SUPPORTS_1024HZ
2233 config SYS_SUPPORTS_ARBIT_HZ
2235 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2236 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2237 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2238 !SYS_SUPPORTS_1024HZ
2243 default 100 if HZ_100
2244 default 128 if HZ_128
2245 default 250 if HZ_250
2246 default 256 if HZ_256
2247 default 1000 if HZ_1000
2248 default 1024 if HZ_1024
2250 source "kernel/Kconfig.preempt"
2252 config MIPS_INSANE_LARGE
2253 bool "Support for large 64-bit configurations"
2254 depends on CPU_R10000 && 64BIT
2256 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2257 previous 64-bit processors which only supported 40 bit / 1TB. If you
2258 need processes of more than 1TB virtual address space, say Y here.
2259 This will result in additional memory usage, so it is not
2260 recommended for normal users.
2263 bool "Kexec system call (EXPERIMENTAL)"
2264 depends on EXPERIMENTAL
2266 kexec is a system call that implements the ability to shutdown your
2267 current kernel, and to start another kernel. It is like a reboot
2268 but it is independent of the system firmware. And like a reboot
2269 you can start any kernel with it, not just Linux.
2271 The name comes from the similarity to the exec system call.
2273 It is an ongoing process to be certain the hardware in a machine
2274 is properly shutdown, so do not be surprised if this code does not
2275 initially work for you. It may help to enable device hotplugging
2276 support. As of this writing the exact hardware interface is
2277 strongly in flux, so no good recommendation can be made.
2280 bool "Enable seccomp to safely compute untrusted bytecode"
2284 This kernel feature is useful for number crunching applications
2285 that may need to compute untrusted bytecode during their
2286 execution. By using pipes or other transports made available to
2287 the process as file descriptors supporting the read/write
2288 syscalls, it's possible to isolate those applications in
2289 their own address space using seccomp. Once seccomp is
2290 enabled via /proc/<pid>/seccomp, it cannot be disabled
2291 and the task is only allowed to execute a few safe syscalls
2292 defined by each seccomp mode.
2294 If unsure, say Y. Only embedded should say N here.
2297 bool "Flattened Device Tree support"
2299 select OF_EARLY_FLATTREE
2301 Include support for flattened device tree machine descriptions.
2305 config LOCKDEP_SUPPORT
2309 config STACKTRACE_SUPPORT
2313 source "init/Kconfig"
2315 source "kernel/Kconfig.freezer"
2317 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2325 bool "Support for PCI controller"
2326 depends on HW_HAS_PCI
2329 Find out whether you have a PCI motherboard. PCI is the name of a
2330 bus system, i.e. the way the CPU talks to the other stuff inside
2331 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2337 source "drivers/pci/Kconfig"
2340 # ISA support is now enabled via select. Too many systems still have the one
2341 # or other ISA chip on the board that users don't know about so don't expect
2342 # users to choose the right thing ...
2349 depends on HW_HAS_EISA
2351 select GENERIC_ISA_DMA
2353 The Extended Industry Standard Architecture (EISA) bus was
2354 developed as an open alternative to the IBM MicroChannel bus.
2356 The EISA bus provided some of the features of the IBM MicroChannel
2357 bus while maintaining backward compatibility with cards made for
2358 the older ISA bus. The EISA bus saw limited use between 1988 and
2359 1995 when it was made obsolete by the PCI bus.
2361 Say Y here if you are building a kernel for an EISA-based machine.
2365 source "drivers/eisa/Kconfig"
2368 bool "TURBOchannel support"
2369 depends on MACH_DECSTATION
2371 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2372 processors. TURBOchannel programming specifications are available
2374 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2376 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2377 Linux driver support status is documented at:
2378 <http://www.linux-mips.org/wiki/DECstation>
2381 # bool "Access.Bus support"
2391 select MIPS_EXTERNAL_TIMER
2396 source "drivers/pcmcia/Kconfig"
2398 source "drivers/pci/hotplug/Kconfig"
2401 bool "RapidIO support"
2405 If you say Y here, the kernel will include drivers and
2406 infrastructure code to support RapidIO interconnect devices.
2408 source "drivers/rapidio/Kconfig"
2412 menu "Executable file formats"
2414 source "fs/Kconfig.binfmt"
2419 config MIPS32_COMPAT
2420 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2423 Select this option if you want Linux/MIPS 32-bit binary
2424 compatibility. Since all software available for Linux/MIPS is
2425 currently 32-bit you should say Y here.
2429 depends on MIPS32_COMPAT
2432 config SYSVIPC_COMPAT
2434 depends on COMPAT && SYSVIPC
2438 bool "Kernel support for o32 binaries"
2439 depends on MIPS32_COMPAT
2441 Select this option if you want to run o32 binaries. These are pure
2442 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2443 existing binaries are in this format.
2448 bool "Kernel support for n32 binaries"
2449 depends on MIPS32_COMPAT
2451 Select this option if you want to run n32 binaries. These are
2452 64-bit binaries using 32-bit quantities for addressing and certain
2453 data that would normally be 64-bit. They are used in special
2460 default y if MIPS32_O32 || MIPS32_N32
2464 menu "Power management options"
2466 config ARCH_HIBERNATION_POSSIBLE
2468 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2470 config ARCH_SUSPEND_POSSIBLE
2472 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2474 source "kernel/power/Kconfig"
2478 source "arch/mips/kernel/cpufreq/Kconfig"
2480 source "net/Kconfig"
2482 source "drivers/Kconfig"
2486 source "arch/mips/Kconfig.debug"
2488 source "security/Kconfig"
2490 source "crypto/Kconfig"
2492 menuconfig VIRTUALIZATION
2493 bool "Virtualization"
2496 Say Y here to get to see options for using your Linux host to run other
2497 operating systems inside virtual machines (guests).
2498 This option alone does not add any kernel code.
2500 If you say N, all options in this submenu will be skipped and disabled.
2504 source drivers/virtio/Kconfig
2506 endif # VIRTUALIZATION
2508 source "lib/Kconfig"