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_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
97 select SYS_HAS_EARLY_PRINTK
100 Support for BCM47XX based boards
103 bool "Broadcom BCM63XX based boards"
106 select DMA_NONCOHERENT
108 select SYS_HAS_CPU_MIPS32_R1
109 select SYS_SUPPORTS_32BIT_KERNEL
110 select SYS_SUPPORTS_BIG_ENDIAN
111 select SYS_HAS_EARLY_PRINTK
113 select ARCH_REQUIRE_GPIOLIB
115 Support for BCM63XX based boards
122 select DMA_NONCOHERENT
128 select PCI_GT64XXX_PCI0
130 select SYS_HAS_CPU_NEVADA
131 select SYS_HAS_EARLY_PRINTK
132 select SYS_SUPPORTS_32BIT_KERNEL
133 select SYS_SUPPORTS_64BIT_KERNEL
134 select SYS_SUPPORTS_LITTLE_ENDIAN
136 config MACH_DECSTATION
143 select CPU_DADDI_WORKAROUNDS if 64BIT
144 select CPU_R4000_WORKAROUNDS if 64BIT
145 select CPU_R4400_WORKAROUNDS if 64BIT
146 select DMA_NONCOHERENT
149 select SYS_HAS_CPU_R3000
150 select SYS_HAS_CPU_R4X00
151 select SYS_SUPPORTS_32BIT_KERNEL
152 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
153 select SYS_SUPPORTS_LITTLE_ENDIAN
154 select SYS_SUPPORTS_128HZ
155 select SYS_SUPPORTS_256HZ
156 select SYS_SUPPORTS_1024HZ
158 This enables support for DEC's MIPS based workstations. For details
159 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
160 DECstation porting pages on <http://decstation.unix-ag.org/>.
162 If you have one of the following DECstation Models you definitely
163 want to choose R4xx0 for the CPU Type:
170 otherwise choose R3000.
173 bool "Jazz family of machines"
176 select ARCH_MAY_HAVE_PC_FDC
179 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
180 select GENERIC_ISA_DMA
181 select HAVE_PCSPKR_PLATFORM
186 select SYS_HAS_CPU_R4X00
187 select SYS_SUPPORTS_32BIT_KERNEL
188 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
189 select SYS_SUPPORTS_100HZ
191 This a family of machines based on the MIPS R4030 chipset which was
192 used by several vendors to build RISC/os and Windows NT workstations.
193 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
194 Olivetti M700-10 workstations.
197 bool "Ingenic JZ4740 based machines"
198 select SYS_HAS_CPU_MIPS32_R1
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_SUPPORTS_LITTLE_ENDIAN
201 select DMA_NONCOHERENT
204 select ARCH_REQUIRE_GPIOLIB
205 select SYS_HAS_EARLY_PRINTK
210 bool "Lantiq based platforms"
211 select DMA_NONCOHERENT
215 select SYS_HAS_CPU_MIPS32_R1
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_SUPPORTS_BIG_ENDIAN
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_MULTITHREADING
220 select SYS_HAS_EARLY_PRINTK
221 select ARCH_REQUIRE_GPIOLIB
228 bool "LASAT Networks platforms"
231 select DMA_NONCOHERENT
232 select SYS_HAS_EARLY_PRINTK
235 select PCI_GT64XXX_PCI0
237 select R5000_CPU_SCACHE
238 select SYS_HAS_CPU_R5000
239 select SYS_SUPPORTS_32BIT_KERNEL
240 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
241 select SYS_SUPPORTS_LITTLE_ENDIAN
244 bool "Loongson family of machines"
245 select SYS_SUPPORTS_ZBOOT
247 This enables the support of Loongson family of machines.
249 Loongson is a family of general-purpose MIPS-compatible CPUs.
250 developed at Institute of Computing Technology (ICT),
251 Chinese Academy of Sciences (CAS) in the People's Republic
252 of China. The chief architect is Professor Weiwu Hu.
255 bool "MIPS Malta board"
256 select ARCH_MAY_HAVE_PC_FDC
261 select DMA_NONCOHERENT
262 select GENERIC_ISA_DMA
263 select HAVE_PCSPKR_PLATFORM
269 select MIPS_BOARDS_GEN
271 select MIPS_CPU_SCACHE
272 select PCI_GT64XXX_PCI0
275 select SYS_HAS_CPU_MIPS32_R1
276 select SYS_HAS_CPU_MIPS32_R2
277 select SYS_HAS_CPU_MIPS64_R1
278 select SYS_HAS_CPU_NEVADA
279 select SYS_HAS_CPU_RM7000
280 select SYS_HAS_EARLY_PRINTK
281 select SYS_SUPPORTS_32BIT_KERNEL
282 select SYS_SUPPORTS_64BIT_KERNEL
283 select SYS_SUPPORTS_BIG_ENDIAN
284 select SYS_SUPPORTS_LITTLE_ENDIAN
285 select SYS_SUPPORTS_MIPS_CMP
286 select SYS_SUPPORTS_MULTITHREADING
287 select SYS_SUPPORTS_SMARTMIPS
288 select SYS_SUPPORTS_ZBOOT
290 This enables support for the MIPS Technologies Malta evaluation
294 bool 'MIPS simulator (MIPSsim)'
297 select DMA_NONCOHERENT
298 select SYS_HAS_EARLY_PRINTK
301 select SYS_HAS_CPU_MIPS32_R1
302 select SYS_HAS_CPU_MIPS32_R2
303 select SYS_HAS_EARLY_PRINTK
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_BIG_ENDIAN
306 select SYS_SUPPORTS_MULTITHREADING
307 select SYS_SUPPORTS_LITTLE_ENDIAN
309 This option enables support for MIPS Technologies MIPSsim software
313 bool "NEC EMMA2RH Mark-eins board"
317 This enables support for the NEC Electronics Mark-eins boards.
320 bool "NEC VR4100 series based machines"
323 select SYS_HAS_CPU_VR41XX
324 select ARCH_REQUIRE_GPIOLIB
327 bool "NXP STB220 board"
330 Support for NXP Semiconductors STB220 Development Board.
337 Support for NXP Semiconductors STB225 Development Board.
340 bool "NXP PNX8550 based JBS board"
342 select SYS_SUPPORTS_LITTLE_ENDIAN
344 config PNX8550_STB810
345 bool "NXP PNX8550 based STB810 board"
347 select SYS_SUPPORTS_LITTLE_ENDIAN
350 bool "PMC-Sierra MSP chipsets"
351 depends on EXPERIMENTAL
354 select DMA_NONCOHERENT
356 select NO_EXCEPT_FILL
358 select SYS_HAS_CPU_MIPS32_R1
359 select SYS_HAS_CPU_MIPS32_R2
360 select SYS_SUPPORTS_32BIT_KERNEL
361 select SYS_SUPPORTS_BIG_ENDIAN
364 select SERIAL_8250_CONSOLE
366 This adds support for the PMC-Sierra family of Multi-Service
367 Processor System-On-A-Chips. These parts include a number
368 of integrated peripherals, interfaces and DSPs in addition to
369 a variety of MIPS cores.
372 bool "PMC-Sierra Yosemite eval board"
381 select SYS_HAS_CPU_RM9000
382 select SYS_HAS_EARLY_PRINTK
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_64BIT_KERNEL
385 select SYS_SUPPORTS_BIG_ENDIAN
386 select SYS_SUPPORTS_HIGHMEM
387 select SYS_SUPPORTS_SMP
389 Yosemite is an evaluation board for the RM9000x2 processor
390 manufactured by PMC-Sierra.
396 select CPU_MIPSR2_IRQ_VI
397 select CPU_MIPSR2_IRQ_EI
399 select DMA_NONCOHERENT
401 select SYS_HAS_EARLY_PRINTK
402 select SYS_HAS_CPU_MIPS32_R2
403 select SYS_SUPPORTS_32BIT_KERNEL
404 select SYS_SUPPORTS_BIG_ENDIAN
405 select SYS_SUPPORTS_HIGHMEM
406 select USB_OHCI_LITTLE_ENDIAN
408 This enables support for the Cisco PowerTV Platform.
411 bool "SGI IP22 (Indy/Indigo2)"
417 select DEFAULT_SGI_PARTITION
418 select DMA_NONCOHERENT
422 select IP22_CPU_SCACHE
424 select GENERIC_ISA_DMA_SUPPORT_BROKEN
426 select SGI_HAS_INDYDOG
432 select SYS_HAS_CPU_R4X00
433 select SYS_HAS_CPU_R5000
435 # Disable EARLY_PRINTK for now since it leads to overwritten prom
436 # memory during early boot on some machines.
438 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
439 # for a more details discussion
441 # select SYS_HAS_EARLY_PRINTK
442 select SYS_SUPPORTS_32BIT_KERNEL
443 select SYS_SUPPORTS_64BIT_KERNEL
444 select SYS_SUPPORTS_BIG_ENDIAN
446 This are the SGI Indy, Challenge S and Indigo2, as well as certain
447 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
448 that runs on these, say Y here.
451 bool "SGI IP27 (Origin200/2000)"
455 select DEFAULT_SGI_PARTITION
457 select SYS_HAS_EARLY_PRINTK
459 select NR_CPUS_DEFAULT_64
460 select SYS_HAS_CPU_R10000
461 select SYS_SUPPORTS_64BIT_KERNEL
462 select SYS_SUPPORTS_BIG_ENDIAN
463 select SYS_SUPPORTS_NUMA
464 select SYS_SUPPORTS_SMP
466 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
467 workstations. To compile a Linux kernel that runs on these, say Y
471 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
472 depends on EXPERIMENTAL
478 select DEFAULT_SGI_PARTITION
479 select DMA_NONCOHERENT
480 select GENERIC_ISA_DMA_SUPPORT_BROKEN
486 select SGI_HAS_INDYDOG
492 select SYS_HAS_CPU_R10000
494 # Disable EARLY_PRINTK for now since it leads to overwritten prom
495 # memory during early boot on some machines.
497 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
498 # for a more details discussion
500 # select SYS_HAS_EARLY_PRINTK
501 select SYS_SUPPORTS_64BIT_KERNEL
502 select SYS_SUPPORTS_BIG_ENDIAN
504 This is the SGI Indigo2 with R10000 processor. To compile a Linux
505 kernel that runs on these, say Y here.
514 select DMA_NONCOHERENT
517 select R5000_CPU_SCACHE
518 select RM7000_CPU_SCACHE
519 select SYS_HAS_CPU_R5000
520 select SYS_HAS_CPU_R10000 if BROKEN
521 select SYS_HAS_CPU_RM7000
522 select SYS_HAS_CPU_NEVADA
523 select SYS_SUPPORTS_64BIT_KERNEL
524 select SYS_SUPPORTS_BIG_ENDIAN
526 If you want this kernel to run on SGI O2 workstation, say Y here.
529 bool "Sibyte BCM91120C-CRhine"
530 depends on EXPERIMENTAL
533 select SIBYTE_BCM1120
535 select SYS_HAS_CPU_SB1
536 select SYS_SUPPORTS_BIG_ENDIAN
537 select SYS_SUPPORTS_LITTLE_ENDIAN
540 bool "Sibyte BCM91120x-Carmel"
541 depends on EXPERIMENTAL
544 select SIBYTE_BCM1120
546 select SYS_HAS_CPU_SB1
547 select SYS_SUPPORTS_BIG_ENDIAN
548 select SYS_SUPPORTS_LITTLE_ENDIAN
551 bool "Sibyte BCM91125C-CRhone"
552 depends on EXPERIMENTAL
555 select SIBYTE_BCM1125
557 select SYS_HAS_CPU_SB1
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_HIGHMEM
560 select SYS_SUPPORTS_LITTLE_ENDIAN
563 bool "Sibyte BCM91125E-Rhone"
564 depends on EXPERIMENTAL
567 select SIBYTE_BCM1125H
569 select SYS_HAS_CPU_SB1
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_LITTLE_ENDIAN
574 bool "Sibyte BCM91250A-SWARM"
577 select HAVE_PATA_PLATFORM
578 select NR_CPUS_DEFAULT_2
581 select SYS_HAS_CPU_SB1
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_HIGHMEM
584 select SYS_SUPPORTS_LITTLE_ENDIAN
585 select ZONE_DMA32 if 64BIT
587 config SIBYTE_LITTLESUR
588 bool "Sibyte BCM91250C2-LittleSur"
589 depends on EXPERIMENTAL
592 select HAVE_PATA_PLATFORM
593 select NR_CPUS_DEFAULT_2
596 select SYS_HAS_CPU_SB1
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_HIGHMEM
599 select SYS_SUPPORTS_LITTLE_ENDIAN
601 config SIBYTE_SENTOSA
602 bool "Sibyte BCM91250E-Sentosa"
603 depends on EXPERIMENTAL
606 select NR_CPUS_DEFAULT_2
609 select SYS_HAS_CPU_SB1
610 select SYS_SUPPORTS_BIG_ENDIAN
611 select SYS_SUPPORTS_LITTLE_ENDIAN
614 bool "Sibyte BCM91480B-BigSur"
617 select NR_CPUS_DEFAULT_4
618 select SIBYTE_BCM1x80
620 select SYS_HAS_CPU_SB1
621 select SYS_SUPPORTS_BIG_ENDIAN
622 select SYS_SUPPORTS_HIGHMEM
623 select SYS_SUPPORTS_LITTLE_ENDIAN
624 select ZONE_DMA32 if 64BIT
627 bool "SNI RM200/300/400"
628 select ARC if CPU_LITTLE_ENDIAN
629 select ARC32 if CPU_LITTLE_ENDIAN
630 select SNIPROM if CPU_BIG_ENDIAN
631 select ARCH_MAY_HAVE_PC_FDC
635 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
636 select DMA_NONCOHERENT
637 select GENERIC_ISA_DMA
638 select HAVE_PCSPKR_PLATFORM
645 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
646 select SYS_HAS_CPU_R4X00
647 select SYS_HAS_CPU_R5000
648 select SYS_HAS_CPU_R10000
649 select R5000_CPU_SCACHE
650 select SYS_HAS_EARLY_PRINTK
651 select SYS_SUPPORTS_32BIT_KERNEL
652 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select SYS_SUPPORTS_HIGHMEM
655 select SYS_SUPPORTS_LITTLE_ENDIAN
657 The SNI RM200/300/400 are MIPS-based machines manufactured by
658 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
659 Technology and now in turn merged with Fujitsu. Say Y here to
660 support this machine type.
663 bool "Toshiba TX39 series based machines"
666 bool "Toshiba TX49 series based machines"
668 config MIKROTIK_RB532
669 bool "Mikrotik RB532 boards"
672 select DMA_NONCOHERENT
675 select SYS_HAS_CPU_MIPS32_R1
676 select SYS_SUPPORTS_32BIT_KERNEL
677 select SYS_SUPPORTS_LITTLE_ENDIAN
680 select ARCH_REQUIRE_GPIOLIB
682 Support the Mikrotik(tm) RouterBoard 532 series,
683 based on the IDT RC32434 SoC.
686 bool "Wind River PPMC board"
691 select DMA_NONCOHERENT
693 select PCI_GT64XXX_PCI0
695 select SYS_HAS_CPU_MIPS32_R1
696 select SYS_HAS_CPU_MIPS32_R2
697 select SYS_HAS_CPU_MIPS64_R1
698 select SYS_HAS_CPU_NEVADA
699 select SYS_HAS_CPU_RM7000
700 select SYS_SUPPORTS_32BIT_KERNEL
701 select SYS_SUPPORTS_64BIT_KERNEL
702 select SYS_SUPPORTS_BIG_ENDIAN
703 select SYS_SUPPORTS_LITTLE_ENDIAN
705 This enables support for the Wind River MIPS32 4KC PPMC evaluation
706 board, which is based on GT64120 bridge chip.
708 config CAVIUM_OCTEON_SIMULATOR
709 bool "Cavium Networks Octeon Simulator"
711 select 64BIT_PHYS_ADDR
713 select SYS_SUPPORTS_64BIT_KERNEL
714 select SYS_SUPPORTS_BIG_ENDIAN
715 select SYS_SUPPORTS_HIGHMEM
716 select SYS_SUPPORTS_HOTPLUG_CPU
717 select SYS_HAS_CPU_CAVIUM_OCTEON
719 The Octeon simulator is software performance model of the Cavium
720 Octeon Processor. It supports simulating Octeon processors on x86
723 config CAVIUM_OCTEON_REFERENCE_BOARD
724 bool "Cavium Networks Octeon reference board"
726 select 64BIT_PHYS_ADDR
728 select SYS_SUPPORTS_64BIT_KERNEL
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_HIGHMEM
731 select SYS_SUPPORTS_HOTPLUG_CPU
732 select SYS_HAS_EARLY_PRINTK
733 select SYS_HAS_CPU_CAVIUM_OCTEON
736 select ARCH_SUPPORTS_MSI
738 select USB_ARCH_HAS_OHCI
739 select USB_ARCH_HAS_EHCI
741 This option supports all of the Octeon reference boards from Cavium
742 Networks. It builds a kernel that dynamically determines the Octeon
743 CPU type and supports all known board reference implementations.
744 Some of the supported boards are:
751 Say Y here for most Octeon reference boards.
754 bool "Netlogic XLR/XLS based systems"
755 depends on EXPERIMENTAL
759 select SYS_HAS_CPU_XLR
760 select SYS_SUPPORTS_SMP
763 select SYS_SUPPORTS_32BIT_KERNEL
764 select SYS_SUPPORTS_64BIT_KERNEL
765 select 64BIT_PHYS_ADDR
766 select SYS_SUPPORTS_BIG_ENDIAN
767 select SYS_SUPPORTS_HIGHMEM
769 select NR_CPUS_DEFAULT_32
773 select ZONE_DMA if 64BIT
775 select SYS_HAS_EARLY_PRINTK
777 Support for systems based on Netlogic XLR and XLS processors.
778 Say Y here if you have a XLR or XLS based board.
782 source "arch/mips/alchemy/Kconfig"
783 source "arch/mips/ath79/Kconfig"
784 source "arch/mips/bcm47xx/Kconfig"
785 source "arch/mips/bcm63xx/Kconfig"
786 source "arch/mips/jazz/Kconfig"
787 source "arch/mips/jz4740/Kconfig"
788 source "arch/mips/lantiq/Kconfig"
789 source "arch/mips/lasat/Kconfig"
790 source "arch/mips/pmc-sierra/Kconfig"
791 source "arch/mips/powertv/Kconfig"
792 source "arch/mips/sgi-ip27/Kconfig"
793 source "arch/mips/sibyte/Kconfig"
794 source "arch/mips/txx9/Kconfig"
795 source "arch/mips/vr41xx/Kconfig"
796 source "arch/mips/cavium-octeon/Kconfig"
797 source "arch/mips/loongson/Kconfig"
798 source "arch/mips/netlogic/Kconfig"
802 config RWSEM_GENERIC_SPINLOCK
806 config RWSEM_XCHGADD_ALGORITHM
809 config ARCH_HAS_ILOG2_U32
813 config ARCH_HAS_ILOG2_U64
817 config ARCH_SUPPORTS_OPROFILE
819 default y if !MIPS_MT_SMTC
821 config GENERIC_HWEIGHT
825 config GENERIC_CALIBRATE_DELAY
829 config GENERIC_CLOCKEVENTS
833 config GENERIC_CMOS_UPDATE
837 config SCHED_OMIT_FRAME_POINTER
842 # Select some configuration options automatically based on user selections.
847 config ARCH_MAY_HAVE_PC_FDC
896 select ARCH_REQUIRE_GPIOLIB
902 config ARCH_DMA_ADDR_T_64BIT
903 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
908 config DMA_NONCOHERENT
910 select NEED_DMA_MAP_STATE
912 config NEED_DMA_MAP_STATE
915 config SYS_HAS_EARLY_PRINTK
919 bool "Support for hot-pluggable CPUs"
920 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
922 Say Y here to allow turning CPUs off and on. CPUs can be
923 controlled through /sys/devices/system/cpu.
924 (Note: power management support will enable this option
925 automatically on SMP systems. )
926 Say N if you want to disable CPU hotplug.
928 config SYS_SUPPORTS_HOTPLUG_CPU
943 config MIPS_DISABLE_OBSOLETE_IDE
955 config GENERIC_ISA_DMA
957 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
960 config GENERIC_ISA_DMA_SUPPORT_BROKEN
962 select GENERIC_ISA_DMA
971 # Endianess selection. Sufficiently obscure so many users don't know what to
972 # answer,so we try hard to limit the available choices. Also the use of a
973 # choice statement should be more obvious to the user.
976 prompt "Endianess selection"
978 Some MIPS machines can be configured for either little or big endian
979 byte order. These modes require different kernels and a different
980 Linux distribution. In general there is one preferred byteorder for a
981 particular system but some systems are just as commonly used in the
982 one or the other endianness.
984 config CPU_BIG_ENDIAN
986 depends on SYS_SUPPORTS_BIG_ENDIAN
988 config CPU_LITTLE_ENDIAN
990 depends on SYS_SUPPORTS_LITTLE_ENDIAN
998 config SYS_SUPPORTS_APM_EMULATION
1001 config SYS_SUPPORTS_BIG_ENDIAN
1004 config SYS_SUPPORTS_LITTLE_ENDIAN
1007 config SYS_SUPPORTS_HUGETLBFS
1009 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1036 config MIPS_BOARDS_GEN
1039 config PCI_GT64XXX_PCI0
1042 config NO_EXCEPT_FILL
1047 select SERIAL_RM9000
1053 select DMA_NONCOHERENT
1055 select SWAP_IO_SPACE
1056 select SYS_HAS_CPU_R5500
1057 select SYS_SUPPORTS_32BIT_KERNEL
1058 select SYS_SUPPORTS_64BIT_KERNEL
1059 select SYS_SUPPORTS_BIG_ENDIAN
1066 select DMA_NONCOHERENT
1067 select SYS_HAS_CPU_MIPS32_R2
1068 select SYS_SUPPORTS_32BIT_KERNEL
1069 select SYS_SUPPORTS_LITTLE_ENDIAN
1070 select SYS_SUPPORTS_BIG_ENDIAN
1072 select CPU_MIPSR2_IRQ_VI
1084 select DMA_NONCOHERENT
1086 select SYS_HAS_CPU_MIPS32_R1
1087 select SYS_HAS_EARLY_PRINTK
1088 select SYS_SUPPORTS_32BIT_KERNEL
1091 config SWAP_IO_SPACE
1094 config SERIAL_RM9000
1097 config SGI_HAS_INDYDOG
1109 config SGI_HAS_ZILOG
1112 config SGI_HAS_I8042
1115 config DEFAULT_SGI_PARTITION
1127 config MIPS_L1_CACHE_SHIFT
1129 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1130 default "6" if MIPS_CPU_SCACHE
1131 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1134 config HAVE_STD_PC_SERIAL_PORT
1138 bool "ARC console support"
1139 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1143 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1148 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1157 menu "CPU selection"
1163 config CPU_LOONGSON2E
1165 depends on SYS_HAS_CPU_LOONGSON2E
1166 select CPU_LOONGSON2
1168 The Loongson 2E processor implements the MIPS III instruction set
1169 with many extensions.
1171 It has an internal FPGA northbridge, which is compatible to
1174 config CPU_LOONGSON2F
1176 depends on SYS_HAS_CPU_LOONGSON2F
1177 select CPU_LOONGSON2
1179 select ARCH_REQUIRE_GPIOLIB
1181 The Loongson 2F processor implements the MIPS III instruction set
1182 with many extensions.
1184 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1185 have a similar programming interface with FPGA northbridge used in
1188 config CPU_MIPS32_R1
1189 bool "MIPS32 Release 1"
1190 depends on SYS_HAS_CPU_MIPS32_R1
1191 select CPU_HAS_PREFETCH
1192 select CPU_SUPPORTS_32BIT_KERNEL
1193 select CPU_SUPPORTS_HIGHMEM
1195 Choose this option to build a kernel for release 1 or later of the
1196 MIPS32 architecture. Most modern embedded systems with a 32-bit
1197 MIPS processor are based on a MIPS32 processor. If you know the
1198 specific type of processor in your system, choose those that one
1199 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1200 Release 2 of the MIPS32 architecture is available since several
1201 years so chances are you even have a MIPS32 Release 2 processor
1202 in which case you should choose CPU_MIPS32_R2 instead for better
1205 config CPU_MIPS32_R2
1206 bool "MIPS32 Release 2"
1207 depends on SYS_HAS_CPU_MIPS32_R2
1208 select CPU_HAS_PREFETCH
1209 select CPU_SUPPORTS_32BIT_KERNEL
1210 select CPU_SUPPORTS_HIGHMEM
1212 Choose this option to build a kernel for release 2 or later of the
1213 MIPS32 architecture. Most modern embedded systems with a 32-bit
1214 MIPS processor are based on a MIPS32 processor. If you know the
1215 specific type of processor in your system, choose those that one
1216 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1218 config CPU_MIPS64_R1
1219 bool "MIPS64 Release 1"
1220 depends on SYS_HAS_CPU_MIPS64_R1
1221 select CPU_HAS_PREFETCH
1222 select CPU_SUPPORTS_32BIT_KERNEL
1223 select CPU_SUPPORTS_64BIT_KERNEL
1224 select CPU_SUPPORTS_HIGHMEM
1225 select CPU_SUPPORTS_HUGEPAGES
1227 Choose this option to build a kernel for release 1 or later of the
1228 MIPS64 architecture. Many modern embedded systems with a 64-bit
1229 MIPS processor are based on a MIPS64 processor. If you know the
1230 specific type of processor in your system, choose those that one
1231 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1232 Release 2 of the MIPS64 architecture is available since several
1233 years so chances are you even have a MIPS64 Release 2 processor
1234 in which case you should choose CPU_MIPS64_R2 instead for better
1237 config CPU_MIPS64_R2
1238 bool "MIPS64 Release 2"
1239 depends on SYS_HAS_CPU_MIPS64_R2
1240 select CPU_HAS_PREFETCH
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1243 select CPU_SUPPORTS_HIGHMEM
1244 select CPU_SUPPORTS_HUGEPAGES
1246 Choose this option to build a kernel for release 2 or later of the
1247 MIPS64 architecture. Many modern embedded systems with a 64-bit
1248 MIPS processor are based on a MIPS64 processor. If you know the
1249 specific type of processor in your system, choose those that one
1250 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1254 depends on SYS_HAS_CPU_R3000
1256 select CPU_SUPPORTS_32BIT_KERNEL
1257 select CPU_SUPPORTS_HIGHMEM
1259 Please make sure to pick the right CPU type. Linux/MIPS is not
1260 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1261 *not* work on R4000 machines and vice versa. However, since most
1262 of the supported machines have an R4000 (or similar) CPU, R4x00
1263 might be a safe bet. If the resulting kernel does not work,
1264 try to recompile with R3000.
1268 depends on SYS_HAS_CPU_TX39XX
1269 select CPU_SUPPORTS_32BIT_KERNEL
1273 depends on SYS_HAS_CPU_VR41XX
1274 select CPU_SUPPORTS_32BIT_KERNEL
1275 select CPU_SUPPORTS_64BIT_KERNEL
1277 The options selects support for the NEC VR4100 series of processors.
1278 Only choose this option if you have one of these processors as a
1279 kernel built with this option will not run on any other type of
1280 processor or vice versa.
1284 depends on SYS_HAS_CPU_R4300
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1288 MIPS Technologies R4300-series processors.
1292 depends on SYS_HAS_CPU_R4X00
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1296 MIPS Technologies R4000-series processors other than 4300, including
1297 the R4000, R4400, R4600, and 4700.
1301 depends on SYS_HAS_CPU_TX49XX
1302 select CPU_HAS_PREFETCH
1303 select CPU_SUPPORTS_32BIT_KERNEL
1304 select CPU_SUPPORTS_64BIT_KERNEL
1308 depends on SYS_HAS_CPU_R5000
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1312 MIPS Technologies R5000-series processors other than the Nevada.
1316 depends on SYS_HAS_CPU_R5432
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1322 depends on SYS_HAS_CPU_R5500
1323 select CPU_SUPPORTS_32BIT_KERNEL
1324 select CPU_SUPPORTS_64BIT_KERNEL
1325 select CPU_SUPPORTS_HUGEPAGES
1327 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1332 depends on EXPERIMENTAL
1333 depends on SYS_HAS_CPU_R6000
1334 select CPU_SUPPORTS_32BIT_KERNEL
1336 MIPS Technologies R6000 and R6000A series processors. Note these
1337 processors are extremely rare and the support for them is incomplete.
1341 depends on SYS_HAS_CPU_NEVADA
1342 select CPU_SUPPORTS_32BIT_KERNEL
1343 select CPU_SUPPORTS_64BIT_KERNEL
1345 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1349 depends on EXPERIMENTAL
1350 depends on SYS_HAS_CPU_R8000
1351 select CPU_HAS_PREFETCH
1352 select CPU_SUPPORTS_64BIT_KERNEL
1354 MIPS Technologies R8000 processors. Note these processors are
1355 uncommon and the support for them is incomplete.
1359 depends on SYS_HAS_CPU_R10000
1360 select CPU_HAS_PREFETCH
1361 select CPU_SUPPORTS_32BIT_KERNEL
1362 select CPU_SUPPORTS_64BIT_KERNEL
1363 select CPU_SUPPORTS_HIGHMEM
1365 MIPS Technologies R10000-series processors.
1369 depends on SYS_HAS_CPU_RM7000
1370 select CPU_HAS_PREFETCH
1371 select CPU_SUPPORTS_32BIT_KERNEL
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1377 depends on SYS_HAS_CPU_RM9000
1378 select CPU_HAS_PREFETCH
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select CPU_SUPPORTS_64BIT_KERNEL
1381 select CPU_SUPPORTS_HIGHMEM
1382 select WEAK_ORDERING
1386 depends on SYS_HAS_CPU_SB1
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select CPU_SUPPORTS_64BIT_KERNEL
1389 select CPU_SUPPORTS_HIGHMEM
1390 select WEAK_ORDERING
1392 config CPU_CAVIUM_OCTEON
1393 bool "Cavium Octeon processor"
1394 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1395 select CPU_HAS_PREFETCH
1396 select CPU_SUPPORTS_64BIT_KERNEL
1397 select SYS_SUPPORTS_SMP
1398 select NR_CPUS_DEFAULT_16
1399 select WEAK_ORDERING
1400 select CPU_SUPPORTS_HIGHMEM
1401 select CPU_SUPPORTS_HUGEPAGES
1403 The Cavium Octeon processor is a highly integrated chip containing
1404 many ethernet hardware widgets for networking tasks. The processor
1405 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1406 Full details can be found at http://www.caviumnetworks.com.
1408 config CPU_BMIPS3300
1410 depends on SYS_HAS_CPU_BMIPS3300
1411 select DMA_NONCOHERENT
1413 select SWAP_IO_SPACE
1414 select SYS_SUPPORTS_32BIT_KERNEL
1415 select WEAK_ORDERING
1417 Broadcom BMIPS3300 processors.
1419 config CPU_BMIPS4350
1421 depends on SYS_HAS_CPU_BMIPS4350
1422 select CPU_SUPPORTS_32BIT_KERNEL
1423 select DMA_NONCOHERENT
1425 select SWAP_IO_SPACE
1426 select SYS_SUPPORTS_SMP
1427 select SYS_SUPPORTS_HOTPLUG_CPU
1428 select WEAK_ORDERING
1430 Broadcom BMIPS4350 ("VIPER") processors.
1432 config CPU_BMIPS4380
1434 depends on SYS_HAS_CPU_BMIPS4380
1435 select CPU_SUPPORTS_32BIT_KERNEL
1436 select DMA_NONCOHERENT
1438 select SWAP_IO_SPACE
1439 select SYS_SUPPORTS_SMP
1440 select SYS_SUPPORTS_HOTPLUG_CPU
1441 select WEAK_ORDERING
1443 Broadcom BMIPS4380 processors.
1445 config CPU_BMIPS5000
1447 depends on SYS_HAS_CPU_BMIPS5000
1448 select CPU_SUPPORTS_32BIT_KERNEL
1449 select CPU_SUPPORTS_HIGHMEM
1450 select DMA_NONCOHERENT
1452 select SWAP_IO_SPACE
1453 select SYS_SUPPORTS_SMP
1454 select SYS_SUPPORTS_HOTPLUG_CPU
1455 select WEAK_ORDERING
1457 Broadcom BMIPS5000 processors.
1460 bool "Netlogic XLR SoC"
1461 depends on SYS_HAS_CPU_XLR
1462 select CPU_SUPPORTS_32BIT_KERNEL
1463 select CPU_SUPPORTS_64BIT_KERNEL
1464 select CPU_SUPPORTS_HIGHMEM
1465 select WEAK_ORDERING
1466 select WEAK_REORDERING_BEYOND_LLSC
1467 select CPU_SUPPORTS_HUGEPAGES
1469 Netlogic Microsystems XLR/XLS processors.
1473 config CPU_NOP_WORKAROUNDS
1476 config CPU_JUMP_WORKAROUNDS
1479 config CPU_LOONGSON2F_WORKAROUNDS
1480 bool "Loongson 2F Workarounds"
1482 select CPU_NOP_WORKAROUNDS
1483 select CPU_JUMP_WORKAROUNDS
1485 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1486 require workarounds. Without workarounds the system may hang
1487 unexpectedly. For more information please refer to the gas
1488 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1490 Loongson 2F03 and later have fixed these issues and no workarounds
1491 are needed. The workarounds have no significant side effect on them
1492 but may decrease the performance of the system so this option should
1493 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1496 If unsure, please say Y.
1497 endif # CPU_LOONGSON2F
1499 config SYS_SUPPORTS_ZBOOT
1501 select HAVE_KERNEL_GZIP
1502 select HAVE_KERNEL_BZIP2
1503 select HAVE_KERNEL_LZMA
1504 select HAVE_KERNEL_LZO
1506 config SYS_SUPPORTS_ZBOOT_UART16550
1508 select SYS_SUPPORTS_ZBOOT
1510 config CPU_LOONGSON2
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_64BIT_KERNEL
1514 select CPU_SUPPORTS_HIGHMEM
1516 config SYS_HAS_CPU_LOONGSON2E
1519 config SYS_HAS_CPU_LOONGSON2F
1521 select CPU_SUPPORTS_CPUFREQ
1522 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1523 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1525 config SYS_HAS_CPU_MIPS32_R1
1528 config SYS_HAS_CPU_MIPS32_R2
1531 config SYS_HAS_CPU_MIPS64_R1
1534 config SYS_HAS_CPU_MIPS64_R2
1537 config SYS_HAS_CPU_R3000
1540 config SYS_HAS_CPU_TX39XX
1543 config SYS_HAS_CPU_VR41XX
1546 config SYS_HAS_CPU_R4300
1549 config SYS_HAS_CPU_R4X00
1552 config SYS_HAS_CPU_TX49XX
1555 config SYS_HAS_CPU_R5000
1558 config SYS_HAS_CPU_R5432
1561 config SYS_HAS_CPU_R5500
1564 config SYS_HAS_CPU_R6000
1567 config SYS_HAS_CPU_NEVADA
1570 config SYS_HAS_CPU_R8000
1573 config SYS_HAS_CPU_R10000
1576 config SYS_HAS_CPU_RM7000
1579 config SYS_HAS_CPU_RM9000
1582 config SYS_HAS_CPU_SB1
1585 config SYS_HAS_CPU_CAVIUM_OCTEON
1588 config SYS_HAS_CPU_BMIPS3300
1591 config SYS_HAS_CPU_BMIPS4350
1594 config SYS_HAS_CPU_BMIPS4380
1597 config SYS_HAS_CPU_BMIPS5000
1600 config SYS_HAS_CPU_XLR
1604 # CPU may reorder R->R, R->W, W->R, W->W
1605 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1607 config WEAK_ORDERING
1611 # CPU may reorder reads and writes beyond LL/SC
1612 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1614 config WEAK_REORDERING_BEYOND_LLSC
1619 # These two indicate any level of the MIPS32 and MIPS64 architecture
1623 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1627 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1630 # These two indicate the revision of the architecture, either Release 1 or Release 2
1634 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1638 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1640 config SYS_SUPPORTS_32BIT_KERNEL
1642 config SYS_SUPPORTS_64BIT_KERNEL
1644 config CPU_SUPPORTS_32BIT_KERNEL
1646 config CPU_SUPPORTS_64BIT_KERNEL
1648 config CPU_SUPPORTS_CPUFREQ
1650 config CPU_SUPPORTS_ADDRWINCFG
1652 config CPU_SUPPORTS_HUGEPAGES
1654 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1656 config MIPS_PGD_C0_CONTEXT
1658 default y if 64BIT && CPU_MIPSR2
1661 # Set to y for ptrace access to watch registers.
1663 config HARDWARE_WATCHPOINTS
1665 default y if CPU_MIPSR1 || CPU_MIPSR2
1671 prompt "Kernel code model"
1673 You should only select this option if you have a workload that
1674 actually benefits from 64-bit processing or if your machine has
1675 large memory. You will only be presented a single option in this
1676 menu if your system does not support both 32-bit and 64-bit kernels.
1679 bool "32-bit kernel"
1680 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1683 Select this option if you want to build a 32-bit kernel.
1685 bool "64-bit kernel"
1686 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1687 select HAVE_SYSCALL_WRAPPERS
1689 Select this option if you want to build a 64-bit kernel.
1694 prompt "Kernel page size"
1695 default PAGE_SIZE_4KB
1697 config PAGE_SIZE_4KB
1699 depends on !CPU_LOONGSON2
1701 This option select the standard 4kB Linux page size. On some
1702 R3000-family processors this is the only available page size. Using
1703 4kB page size will minimize memory consumption and is therefore
1704 recommended for low memory systems.
1706 config PAGE_SIZE_8KB
1708 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1710 Using 8kB page size will result in higher performance kernel at
1711 the price of higher memory consumption. This option is available
1712 only on R8000 and cnMIPS processors. Note that you will need a
1713 suitable Linux distribution to support this.
1715 config PAGE_SIZE_16KB
1717 depends on !CPU_R3000 && !CPU_TX39XX
1719 Using 16kB page size will result in higher performance kernel at
1720 the price of higher memory consumption. This option is available on
1721 all non-R3000 family processors. Note that you will need a suitable
1722 Linux distribution to support this.
1724 config PAGE_SIZE_32KB
1726 depends on CPU_CAVIUM_OCTEON
1728 Using 32kB page size will result in higher performance kernel at
1729 the price of higher memory consumption. This option is available
1730 only on cnMIPS cores. Note that you will need a suitable Linux
1731 distribution to support this.
1733 config PAGE_SIZE_64KB
1735 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1737 Using 64kB page size will result in higher performance kernel at
1738 the price of higher memory consumption. This option is available on
1739 all non-R3000 family processor. Not that at the time of this
1740 writing this option is still high experimental.
1744 config FORCE_MAX_ZONEORDER
1745 int "Maximum zone order"
1746 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1747 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1748 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1749 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1753 The kernel memory allocator divides physically contiguous memory
1754 blocks into "zones", where each zone is a power of two number of
1755 pages. This option selects the largest power of two that the kernel
1756 keeps in the memory allocator. If you need to allocate very large
1757 blocks of physically contiguous memory, then you may need to
1758 increase this value.
1760 This config option is actually maximum order plus one. For example,
1761 a value of 11 means that the largest free memory block is 2^10 pages.
1763 The page size is not necessarily 4KB. Keep this in mind
1764 when choosing a value for this option.
1769 config IP22_CPU_SCACHE
1774 # Support for a MIPS32 / MIPS64 style S-caches
1776 config MIPS_CPU_SCACHE
1780 config R5000_CPU_SCACHE
1784 config RM7000_CPU_SCACHE
1788 config SIBYTE_DMA_PAGEOPS
1789 bool "Use DMA to clear/copy pages"
1792 Instead of using the CPU to zero and copy pages, use a Data Mover
1793 channel. These DMA channels are otherwise unused by the standard
1794 SiByte Linux port. Seems to give a small performance benefit.
1796 config CPU_HAS_PREFETCH
1800 prompt "MIPS MT options"
1802 config MIPS_MT_DISABLED
1803 bool "Disable multithreading support."
1805 Use this option if your workload can't take advantage of
1806 MIPS hardware multithreading support. On systems that don't have
1807 the option of an MT-enabled processor this option will be the only
1808 option in this menu.
1811 bool "Use 1 TC on each available VPE for SMP"
1812 depends on SYS_SUPPORTS_MULTITHREADING
1813 select CPU_MIPSR2_IRQ_VI
1814 select CPU_MIPSR2_IRQ_EI
1816 select NR_CPUS_DEFAULT_2
1818 select SYS_SUPPORTS_SCHED_SMT if SMP
1819 select SYS_SUPPORTS_SMP
1822 This is a kernel model which is known a VSMP but lately has been
1823 marketesed into SMVP.
1824 Virtual SMP uses the processor's VPEs to implement virtual
1825 processors. In currently available configuration of the 34K processor
1826 this allows for a dual processor. Both processors will share the same
1827 primary caches; each will obtain the half of the TLB for it's own
1828 exclusive use. For a layman this model can be described as similar to
1829 what Intel calls Hyperthreading.
1831 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1834 bool "SMTC: Use all TCs on all VPEs for SMP"
1835 depends on CPU_MIPS32_R2
1836 #depends on CPU_MIPS64_R2 # once there is hardware ...
1837 depends on SYS_SUPPORTS_MULTITHREADING
1838 select CPU_MIPSR2_IRQ_VI
1839 select CPU_MIPSR2_IRQ_EI
1841 select NR_CPUS_DEFAULT_8
1843 select SYS_SUPPORTS_SMP
1846 This is a kernel model which is known a SMTC or lately has been
1847 marketesed into SMVP.
1848 is presenting the available TC's of the core as processors to Linux.
1849 On currently available 34K processors this means a Linux system will
1850 see up to 5 processors. The implementation of the SMTC kernel differs
1851 significantly from VSMP and cannot efficiently coexist in the same
1852 kernel binary so the choice between VSMP and SMTC is a compile time
1855 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1863 bool "SMT (multithreading) scheduler support"
1864 depends on SYS_SUPPORTS_SCHED_SMT
1867 SMT scheduler support improves the CPU scheduler's decision making
1868 when dealing with MIPS MT enabled cores at a cost of slightly
1869 increased overhead in some places. If unsure say N here.
1871 config SYS_SUPPORTS_SCHED_SMT
1875 config SYS_SUPPORTS_MULTITHREADING
1878 config MIPS_MT_FPAFF
1879 bool "Dynamic FPU affinity for FP-intensive threads"
1881 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1883 config MIPS_VPE_LOADER
1884 bool "VPE loader support."
1885 depends on SYS_SUPPORTS_MULTITHREADING
1886 select CPU_MIPSR2_IRQ_VI
1887 select CPU_MIPSR2_IRQ_EI
1890 Includes a loader for loading an elf relocatable object
1891 onto another VPE and running it.
1893 config MIPS_MT_SMTC_IM_BACKSTOP
1894 bool "Use per-TC register bits as backstop for inhibited IM bits"
1895 depends on MIPS_MT_SMTC
1898 To support multiple TC microthreads acting as "CPUs" within
1899 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1900 during interrupt handling. To support legacy drivers and interrupt
1901 controller management code, SMTC has a "backstop" to track and
1902 if necessary restore the interrupt mask. This has some performance
1903 impact on interrupt service overhead.
1905 config MIPS_MT_SMTC_IRQAFF
1906 bool "Support IRQ affinity API"
1907 depends on MIPS_MT_SMTC
1910 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1911 for SMTC Linux kernel. Requires platform support, of which
1912 an example can be found in the MIPS kernel i8259 and Malta
1913 platform code. Adds some overhead to interrupt dispatch, and
1914 should be used only if you know what you are doing.
1916 config MIPS_VPE_LOADER_TOM
1917 bool "Load VPE program into memory hidden from linux"
1918 depends on MIPS_VPE_LOADER
1921 The loader can use memory that is present but has been hidden from
1922 Linux using the kernel command line option "mem=xxMB". It's up to
1923 you to ensure the amount you put in the option and the space your
1924 program requires is less or equal to the amount physically present.
1926 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1927 config MIPS_VPE_APSP_API
1928 bool "Enable support for AP/SP API (RTLX)"
1929 depends on MIPS_VPE_LOADER
1932 config MIPS_APSP_KSPD
1934 depends on MIPS_VPE_APSP_API
1937 KSPD is a kernel daemon that accepts syscall requests from the SP
1938 side, actions them and returns the results. It also handles the
1939 "exit" syscall notifying other kernel modules the SP program is
1940 exiting. You probably want to say yes here.
1943 bool "MIPS CMP framework support"
1944 depends on SYS_SUPPORTS_MIPS_CMP
1946 select SYS_SUPPORTS_SMP
1947 select SYS_SUPPORTS_SCHED_SMT if SMP
1948 select WEAK_ORDERING
1951 This is a placeholder option for the GCMP work. It will need to
1952 be handled differently...
1954 config SB1_PASS_1_WORKAROUNDS
1956 depends on CPU_SB1_PASS_1
1959 config SB1_PASS_2_WORKAROUNDS
1961 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1964 config SB1_PASS_2_1_WORKAROUNDS
1966 depends on CPU_SB1 && CPU_SB1_PASS_2
1969 config 64BIT_PHYS_ADDR
1972 config ARCH_PHYS_ADDR_T_64BIT
1973 def_bool 64BIT_PHYS_ADDR
1975 config CPU_HAS_SMARTMIPS
1976 depends on SYS_SUPPORTS_SMARTMIPS
1977 bool "Support for the SmartMIPS ASE"
1979 SmartMIPS is a extension of the MIPS32 architecture aimed at
1980 increased security at both hardware and software level for
1981 smartcards. Enabling this option will allow proper use of the
1982 SmartMIPS instructions by Linux applications. However a kernel with
1983 this option will not work on a MIPS core without SmartMIPS core. If
1984 you don't know you probably don't have SmartMIPS and should say N
1991 # Vectored interrupt mode is an R2 feature
1993 config CPU_MIPSR2_IRQ_VI
1997 # Extended interrupt mode is an R2 feature
1999 config CPU_MIPSR2_IRQ_EI
2004 depends on !CPU_R3000
2007 config GENERIC_CLOCKEVENTS_BROADCAST
2013 config CPU_DADDI_WORKAROUNDS
2016 config CPU_R4000_WORKAROUNDS
2018 select CPU_R4400_WORKAROUNDS
2020 config CPU_R4400_WORKAROUNDS
2024 # - Highmem only makes sense for the 32-bit kernel.
2025 # - The current highmem code will only work properly on physically indexed
2026 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2027 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2028 # moment we protect the user and offer the highmem option only on machines
2029 # where it's known to be safe. This will not offer highmem on a few systems
2030 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2031 # indexed CPUs but we're playing safe.
2032 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2033 # know they might have memory configurations that could make use of highmem
2037 bool "High Memory Support"
2038 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2040 config CPU_SUPPORTS_HIGHMEM
2043 config SYS_SUPPORTS_HIGHMEM
2046 config SYS_SUPPORTS_SMARTMIPS
2049 config ARCH_FLATMEM_ENABLE
2051 depends on !NUMA && !CPU_LOONGSON2
2053 config ARCH_DISCONTIGMEM_ENABLE
2055 default y if SGI_IP27
2057 Say Y to support efficient handling of discontiguous physical memory,
2058 for architectures which are either NUMA (Non-Uniform Memory Access)
2059 or have huge holes in the physical address space for other reasons.
2060 See <file:Documentation/vm/numa> for more.
2062 config ARCH_POPULATES_NODE_MAP
2065 config ARCH_SPARSEMEM_ENABLE
2067 select SPARSEMEM_STATIC
2071 depends on SYS_SUPPORTS_NUMA
2073 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2074 Access). This option improves performance on systems with more
2075 than two nodes; on two node systems it is generally better to
2076 leave it disabled; on single node systems disable this option
2079 config SYS_SUPPORTS_NUMA
2085 depends on NEED_MULTIPLE_NODES
2087 config HW_PERF_EVENTS
2088 bool "Enable hardware performance counter support for perf events"
2089 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2092 Enable hardware performance counter support for perf events. If
2093 disabled, perf events will use software events only.
2098 bool "Multi-Processing support"
2099 depends on SYS_SUPPORTS_SMP
2101 select USE_GENERIC_SMP_HELPERS
2103 This enables support for systems with more than one CPU. If you have
2104 a system with only one CPU, like most personal computers, say N. If
2105 you have a system with more than one CPU, say Y.
2107 If you say N here, the kernel will run on single and multiprocessor
2108 machines, but will use only one CPU of a multiprocessor machine. If
2109 you say Y here, the kernel will run on many, but not all,
2110 singleprocessor machines. On a singleprocessor machine, the kernel
2111 will run faster if you say N here.
2113 People using multiprocessor machines who say Y here should also say
2114 Y to "Enhanced Real Time Clock Support", below.
2116 See also the SMP-HOWTO available at
2117 <http://www.tldp.org/docs.html#howto>.
2119 If you don't know what to do here, say N.
2124 config SYS_SUPPORTS_MIPS_CMP
2127 config SYS_SUPPORTS_SMP
2130 config NR_CPUS_DEFAULT_1
2133 config NR_CPUS_DEFAULT_2
2136 config NR_CPUS_DEFAULT_4
2139 config NR_CPUS_DEFAULT_8
2142 config NR_CPUS_DEFAULT_16
2145 config NR_CPUS_DEFAULT_32
2148 config NR_CPUS_DEFAULT_64
2152 int "Maximum number of CPUs (2-64)"
2153 range 1 64 if NR_CPUS_DEFAULT_1
2155 default "1" if NR_CPUS_DEFAULT_1
2156 default "2" if NR_CPUS_DEFAULT_2
2157 default "4" if NR_CPUS_DEFAULT_4
2158 default "8" if NR_CPUS_DEFAULT_8
2159 default "16" if NR_CPUS_DEFAULT_16
2160 default "32" if NR_CPUS_DEFAULT_32
2161 default "64" if NR_CPUS_DEFAULT_64
2163 This allows you to specify the maximum number of CPUs which this
2164 kernel will support. The maximum supported value is 32 for 32-bit
2165 kernel and 64 for 64-bit kernels; the minimum value which makes
2166 sense is 1 for Qemu (useful only for kernel debugging purposes)
2167 and 2 for all others.
2169 This is purely to save memory - each supported CPU adds
2170 approximately eight kilobytes to the kernel image. For best
2171 performance should round up your number of processors to the next
2174 source "kernel/time/Kconfig"
2177 # Timer Interrupt Frequency Configuration
2181 prompt "Timer frequency"
2184 Allows the configuration of the timer frequency.
2187 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2190 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2193 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2196 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2199 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2202 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2205 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2209 config SYS_SUPPORTS_48HZ
2212 config SYS_SUPPORTS_100HZ
2215 config SYS_SUPPORTS_128HZ
2218 config SYS_SUPPORTS_250HZ
2221 config SYS_SUPPORTS_256HZ
2224 config SYS_SUPPORTS_1000HZ
2227 config SYS_SUPPORTS_1024HZ
2230 config SYS_SUPPORTS_ARBIT_HZ
2232 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2233 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2234 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2235 !SYS_SUPPORTS_1024HZ
2240 default 100 if HZ_100
2241 default 128 if HZ_128
2242 default 250 if HZ_250
2243 default 256 if HZ_256
2244 default 1000 if HZ_1000
2245 default 1024 if HZ_1024
2247 source "kernel/Kconfig.preempt"
2249 config MIPS_INSANE_LARGE
2250 bool "Support for large 64-bit configurations"
2251 depends on CPU_R10000 && 64BIT
2253 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2254 previous 64-bit processors which only supported 40 bit / 1TB. If you
2255 need processes of more than 1TB virtual address space, say Y here.
2256 This will result in additional memory usage, so it is not
2257 recommended for normal users.
2260 bool "Kexec system call (EXPERIMENTAL)"
2261 depends on EXPERIMENTAL
2263 kexec is a system call that implements the ability to shutdown your
2264 current kernel, and to start another kernel. It is like a reboot
2265 but it is independent of the system firmware. And like a reboot
2266 you can start any kernel with it, not just Linux.
2268 The name comes from the similarity to the exec system call.
2270 It is an ongoing process to be certain the hardware in a machine
2271 is properly shutdown, so do not be surprised if this code does not
2272 initially work for you. It may help to enable device hotplugging
2273 support. As of this writing the exact hardware interface is
2274 strongly in flux, so no good recommendation can be made.
2277 bool "Enable seccomp to safely compute untrusted bytecode"
2281 This kernel feature is useful for number crunching applications
2282 that may need to compute untrusted bytecode during their
2283 execution. By using pipes or other transports made available to
2284 the process as file descriptors supporting the read/write
2285 syscalls, it's possible to isolate those applications in
2286 their own address space using seccomp. Once seccomp is
2287 enabled via /proc/<pid>/seccomp, it cannot be disabled
2288 and the task is only allowed to execute a few safe syscalls
2289 defined by each seccomp mode.
2291 If unsure, say Y. Only embedded should say N here.
2294 bool "Flattened Device Tree support"
2296 select OF_EARLY_FLATTREE
2298 Include support for flattened device tree machine descriptions.
2302 config LOCKDEP_SUPPORT
2306 config STACKTRACE_SUPPORT
2310 source "init/Kconfig"
2312 source "kernel/Kconfig.freezer"
2314 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2322 bool "Support for PCI controller"
2323 depends on HW_HAS_PCI
2326 Find out whether you have a PCI motherboard. PCI is the name of a
2327 bus system, i.e. the way the CPU talks to the other stuff inside
2328 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2334 source "drivers/pci/Kconfig"
2337 # ISA support is now enabled via select. Too many systems still have the one
2338 # or other ISA chip on the board that users don't know about so don't expect
2339 # users to choose the right thing ...
2346 depends on HW_HAS_EISA
2348 select GENERIC_ISA_DMA
2350 The Extended Industry Standard Architecture (EISA) bus was
2351 developed as an open alternative to the IBM MicroChannel bus.
2353 The EISA bus provided some of the features of the IBM MicroChannel
2354 bus while maintaining backward compatibility with cards made for
2355 the older ISA bus. The EISA bus saw limited use between 1988 and
2356 1995 when it was made obsolete by the PCI bus.
2358 Say Y here if you are building a kernel for an EISA-based machine.
2362 source "drivers/eisa/Kconfig"
2365 bool "TURBOchannel support"
2366 depends on MACH_DECSTATION
2368 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2369 processors. TURBOchannel programming specifications are available
2371 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2373 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2374 Linux driver support status is documented at:
2375 <http://www.linux-mips.org/wiki/DECstation>
2378 # bool "Access.Bus support"
2389 select MIPS_EXTERNAL_TIMER
2394 source "drivers/pcmcia/Kconfig"
2396 source "drivers/pci/hotplug/Kconfig"
2399 bool "RapidIO support"
2403 If you say Y here, the kernel will include drivers and
2404 infrastructure code to support RapidIO interconnect devices.
2406 source "drivers/rapidio/Kconfig"
2410 menu "Executable file formats"
2412 source "fs/Kconfig.binfmt"
2417 config MIPS32_COMPAT
2418 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2421 Select this option if you want Linux/MIPS 32-bit binary
2422 compatibility. Since all software available for Linux/MIPS is
2423 currently 32-bit you should say Y here.
2427 depends on MIPS32_COMPAT
2430 config SYSVIPC_COMPAT
2432 depends on COMPAT && SYSVIPC
2436 bool "Kernel support for o32 binaries"
2437 depends on MIPS32_COMPAT
2439 Select this option if you want to run o32 binaries. These are pure
2440 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2441 existing binaries are in this format.
2446 bool "Kernel support for n32 binaries"
2447 depends on MIPS32_COMPAT
2449 Select this option if you want to run n32 binaries. These are
2450 64-bit binaries using 32-bit quantities for addressing and certain
2451 data that would normally be 64-bit. They are used in special
2458 default y if MIPS32_O32 || MIPS32_N32
2462 menu "Power management options"
2464 config ARCH_HIBERNATION_POSSIBLE
2466 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2468 config ARCH_SUSPEND_POSSIBLE
2470 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2472 source "kernel/power/Kconfig"
2476 source "arch/mips/kernel/cpufreq/Kconfig"
2478 source "net/Kconfig"
2480 source "drivers/Kconfig"
2484 source "arch/mips/Kconfig.debug"
2486 source "security/Kconfig"
2488 source "crypto/Kconfig"
2490 source "lib/Kconfig"