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
27 select IRQ_FORCED_THREADING
29 menu "Machine selection"
39 bool "Alchemy processor based machines"
40 select 64BIT_PHYS_ADDR
44 select SYS_HAS_CPU_MIPS32_R1
45 select SYS_SUPPORTS_32BIT_KERNEL
46 select SYS_SUPPORTS_APM_EMULATION
48 select ARCH_WANT_OPTIONAL_GPIOLIB
49 select SYS_SUPPORTS_ZBOOT
50 select USB_ARCH_HAS_OHCI
51 select USB_ARCH_HAS_EHCI
54 bool "Texas Instruments AR7"
56 select DMA_NONCOHERENT
62 select SYS_HAS_CPU_MIPS32_R1
63 select SYS_HAS_EARLY_PRINTK
64 select SYS_SUPPORTS_32BIT_KERNEL
65 select SYS_SUPPORTS_LITTLE_ENDIAN
66 select SYS_SUPPORTS_ZBOOT_UART16550
67 select ARCH_REQUIRE_GPIOLIB
71 Support for the Texas Instruments AR7 System-on-a-Chip
72 family: TNETD7100, 7200 and 7300.
75 bool "Atheros AR71XX/AR724X/AR913X based boards"
76 select ARCH_REQUIRE_GPIOLIB
80 select DMA_NONCOHERENT
83 select SYS_HAS_CPU_MIPS32_R2
84 select SYS_HAS_EARLY_PRINTK
85 select SYS_SUPPORTS_32BIT_KERNEL
86 select SYS_SUPPORTS_BIG_ENDIAN
88 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
91 bool "Broadcom BCM47XX based boards"
94 select DMA_NONCOHERENT
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_HAS_EARLY_PRINTK
103 Support for BCM47XX based boards
106 bool "Broadcom BCM63XX based boards"
109 select DMA_NONCOHERENT
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_HAS_EARLY_PRINTK
116 select ARCH_REQUIRE_GPIOLIB
118 Support for BCM63XX based boards
125 select DMA_NONCOHERENT
131 select PCI_GT64XXX_PCI0
133 select SYS_HAS_CPU_NEVADA
134 select SYS_HAS_EARLY_PRINTK
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_64BIT_KERNEL
137 select SYS_SUPPORTS_LITTLE_ENDIAN
139 config MACH_DECSTATION
146 select CPU_DADDI_WORKAROUNDS if 64BIT
147 select CPU_R4000_WORKAROUNDS if 64BIT
148 select CPU_R4400_WORKAROUNDS if 64BIT
149 select DMA_NONCOHERENT
152 select SYS_HAS_CPU_R3000
153 select SYS_HAS_CPU_R4X00
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_128HZ
158 select SYS_SUPPORTS_256HZ
159 select SYS_SUPPORTS_1024HZ
161 This enables support for DEC's MIPS based workstations. For details
162 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
163 DECstation porting pages on <http://decstation.unix-ag.org/>.
165 If you have one of the following DECstation Models you definitely
166 want to choose R4xx0 for the CPU Type:
173 otherwise choose R3000.
176 bool "Jazz family of machines"
179 select ARCH_MAY_HAVE_PC_FDC
182 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
183 select GENERIC_ISA_DMA
184 select HAVE_PCSPKR_PLATFORM
189 select SYS_HAS_CPU_R4X00
190 select SYS_SUPPORTS_32BIT_KERNEL
191 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
192 select SYS_SUPPORTS_100HZ
194 This a family of machines based on the MIPS R4030 chipset which was
195 used by several vendors to build RISC/os and Windows NT workstations.
196 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
197 Olivetti M700-10 workstations.
200 bool "Ingenic JZ4740 based machines"
201 select SYS_HAS_CPU_MIPS32_R1
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_SUPPORTS_LITTLE_ENDIAN
204 select DMA_NONCOHERENT
207 select ARCH_REQUIRE_GPIOLIB
208 select SYS_HAS_EARLY_PRINTK
211 select GENERIC_IRQ_CHIP
214 bool "Lantiq based platforms"
215 select DMA_NONCOHERENT
219 select SYS_HAS_CPU_MIPS32_R1
220 select SYS_HAS_CPU_MIPS32_R2
221 select SYS_SUPPORTS_BIG_ENDIAN
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_MULTITHREADING
224 select SYS_HAS_EARLY_PRINTK
225 select ARCH_REQUIRE_GPIOLIB
232 bool "LASAT Networks platforms"
235 select DMA_NONCOHERENT
236 select SYS_HAS_EARLY_PRINTK
239 select PCI_GT64XXX_PCI0
241 select R5000_CPU_SCACHE
242 select SYS_HAS_CPU_R5000
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
245 select SYS_SUPPORTS_LITTLE_ENDIAN
248 bool "Loongson family of machines"
249 select SYS_SUPPORTS_ZBOOT
251 This enables the support of Loongson family of machines.
253 Loongson is a family of general-purpose MIPS-compatible CPUs.
254 developed at Institute of Computing Technology (ICT),
255 Chinese Academy of Sciences (CAS) in the People's Republic
256 of China. The chief architect is Professor Weiwu Hu.
259 bool "MIPS Malta board"
260 select ARCH_MAY_HAVE_PC_FDC
265 select DMA_NONCOHERENT
266 select GENERIC_ISA_DMA
267 select HAVE_PCSPKR_PLATFORM
273 select MIPS_BOARDS_GEN
275 select MIPS_CPU_SCACHE
276 select PCI_GT64XXX_PCI0
279 select SYS_HAS_CPU_MIPS32_R1
280 select SYS_HAS_CPU_MIPS32_R2
281 select SYS_HAS_CPU_MIPS64_R1
282 select SYS_HAS_CPU_NEVADA
283 select SYS_HAS_CPU_RM7000
284 select SYS_HAS_EARLY_PRINTK
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_64BIT_KERNEL
287 select SYS_SUPPORTS_BIG_ENDIAN
288 select SYS_SUPPORTS_LITTLE_ENDIAN
289 select SYS_SUPPORTS_MIPS_CMP
290 select SYS_SUPPORTS_MULTITHREADING
291 select SYS_SUPPORTS_SMARTMIPS
292 select SYS_SUPPORTS_ZBOOT
294 This enables support for the MIPS Technologies Malta evaluation
298 bool 'MIPS simulator (MIPSsim)'
301 select DMA_NONCOHERENT
302 select SYS_HAS_EARLY_PRINTK
305 select SYS_HAS_CPU_MIPS32_R1
306 select SYS_HAS_CPU_MIPS32_R2
307 select SYS_HAS_EARLY_PRINTK
308 select SYS_SUPPORTS_32BIT_KERNEL
309 select SYS_SUPPORTS_BIG_ENDIAN
310 select SYS_SUPPORTS_MULTITHREADING
311 select SYS_SUPPORTS_LITTLE_ENDIAN
313 This option enables support for MIPS Technologies MIPSsim software
317 bool "NEC EMMA2RH Mark-eins board"
321 This enables support for the NEC Electronics Mark-eins boards.
324 bool "NEC VR4100 series based machines"
327 select SYS_HAS_CPU_VR41XX
328 select ARCH_REQUIRE_GPIOLIB
331 bool "NXP STB220 board"
334 Support for NXP Semiconductors STB220 Development Board.
341 Support for NXP Semiconductors STB225 Development Board.
344 bool "NXP PNX8550 based JBS board"
346 select SYS_SUPPORTS_LITTLE_ENDIAN
348 config PNX8550_STB810
349 bool "NXP PNX8550 based STB810 board"
351 select SYS_SUPPORTS_LITTLE_ENDIAN
354 bool "PMC-Sierra MSP chipsets"
355 depends on EXPERIMENTAL
358 select DMA_NONCOHERENT
360 select NO_EXCEPT_FILL
362 select SYS_HAS_CPU_MIPS32_R1
363 select SYS_HAS_CPU_MIPS32_R2
364 select SYS_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
368 select SERIAL_8250_CONSOLE
370 This adds support for the PMC-Sierra family of Multi-Service
371 Processor System-On-A-Chips. These parts include a number
372 of integrated peripherals, interfaces and DSPs in addition to
373 a variety of MIPS cores.
376 bool "PMC-Sierra Yosemite eval board"
385 select SYS_HAS_CPU_RM9000
386 select SYS_HAS_EARLY_PRINTK
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_64BIT_KERNEL
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_HIGHMEM
391 select SYS_SUPPORTS_SMP
393 Yosemite is an evaluation board for the RM9000x2 processor
394 manufactured by PMC-Sierra.
400 select CPU_MIPSR2_IRQ_VI
401 select CPU_MIPSR2_IRQ_EI
403 select DMA_NONCOHERENT
405 select SYS_HAS_EARLY_PRINTK
406 select SYS_HAS_CPU_MIPS32_R2
407 select SYS_SUPPORTS_32BIT_KERNEL
408 select SYS_SUPPORTS_BIG_ENDIAN
409 select SYS_SUPPORTS_HIGHMEM
410 select USB_OHCI_LITTLE_ENDIAN
412 This enables support for the Cisco PowerTV Platform.
415 bool "SGI IP22 (Indy/Indigo2)"
421 select DEFAULT_SGI_PARTITION
422 select DMA_NONCOHERENT
426 select IP22_CPU_SCACHE
428 select GENERIC_ISA_DMA_SUPPORT_BROKEN
430 select SGI_HAS_INDYDOG
436 select SYS_HAS_CPU_R4X00
437 select SYS_HAS_CPU_R5000
439 # Disable EARLY_PRINTK for now since it leads to overwritten prom
440 # memory during early boot on some machines.
442 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
443 # for a more details discussion
445 # select SYS_HAS_EARLY_PRINTK
446 select SYS_SUPPORTS_32BIT_KERNEL
447 select SYS_SUPPORTS_64BIT_KERNEL
448 select SYS_SUPPORTS_BIG_ENDIAN
450 This are the SGI Indy, Challenge S and Indigo2, as well as certain
451 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
452 that runs on these, say Y here.
455 bool "SGI IP27 (Origin200/2000)"
459 select DEFAULT_SGI_PARTITION
461 select SYS_HAS_EARLY_PRINTK
463 select NR_CPUS_DEFAULT_64
464 select SYS_HAS_CPU_R10000
465 select SYS_SUPPORTS_64BIT_KERNEL
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_NUMA
468 select SYS_SUPPORTS_SMP
470 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
471 workstations. To compile a Linux kernel that runs on these, say Y
475 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
476 depends on EXPERIMENTAL
482 select DEFAULT_SGI_PARTITION
483 select DMA_NONCOHERENT
484 select GENERIC_ISA_DMA_SUPPORT_BROKEN
490 select SGI_HAS_INDYDOG
496 select SYS_HAS_CPU_R10000
498 # Disable EARLY_PRINTK for now since it leads to overwritten prom
499 # memory during early boot on some machines.
501 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
502 # for a more details discussion
504 # select SYS_HAS_EARLY_PRINTK
505 select SYS_SUPPORTS_64BIT_KERNEL
506 select SYS_SUPPORTS_BIG_ENDIAN
508 This is the SGI Indigo2 with R10000 processor. To compile a Linux
509 kernel that runs on these, say Y here.
518 select DMA_NONCOHERENT
521 select R5000_CPU_SCACHE
522 select RM7000_CPU_SCACHE
523 select SYS_HAS_CPU_R5000
524 select SYS_HAS_CPU_R10000 if BROKEN
525 select SYS_HAS_CPU_RM7000
526 select SYS_HAS_CPU_NEVADA
527 select SYS_SUPPORTS_64BIT_KERNEL
528 select SYS_SUPPORTS_BIG_ENDIAN
530 If you want this kernel to run on SGI O2 workstation, say Y here.
533 bool "Sibyte BCM91120C-CRhine"
534 depends on EXPERIMENTAL
537 select SIBYTE_BCM1120
539 select SYS_HAS_CPU_SB1
540 select SYS_SUPPORTS_BIG_ENDIAN
541 select SYS_SUPPORTS_LITTLE_ENDIAN
544 bool "Sibyte BCM91120x-Carmel"
545 depends on EXPERIMENTAL
548 select SIBYTE_BCM1120
550 select SYS_HAS_CPU_SB1
551 select SYS_SUPPORTS_BIG_ENDIAN
552 select SYS_SUPPORTS_LITTLE_ENDIAN
555 bool "Sibyte BCM91125C-CRhone"
556 depends on EXPERIMENTAL
559 select SIBYTE_BCM1125
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_HIGHMEM
564 select SYS_SUPPORTS_LITTLE_ENDIAN
567 bool "Sibyte BCM91125E-Rhone"
568 depends on EXPERIMENTAL
571 select SIBYTE_BCM1125H
573 select SYS_HAS_CPU_SB1
574 select SYS_SUPPORTS_BIG_ENDIAN
575 select SYS_SUPPORTS_LITTLE_ENDIAN
578 bool "Sibyte BCM91250A-SWARM"
581 select HAVE_PATA_PLATFORM
582 select NR_CPUS_DEFAULT_2
585 select SYS_HAS_CPU_SB1
586 select SYS_SUPPORTS_BIG_ENDIAN
587 select SYS_SUPPORTS_HIGHMEM
588 select SYS_SUPPORTS_LITTLE_ENDIAN
589 select ZONE_DMA32 if 64BIT
591 config SIBYTE_LITTLESUR
592 bool "Sibyte BCM91250C2-LittleSur"
593 depends on EXPERIMENTAL
596 select HAVE_PATA_PLATFORM
597 select NR_CPUS_DEFAULT_2
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_HIGHMEM
603 select SYS_SUPPORTS_LITTLE_ENDIAN
605 config SIBYTE_SENTOSA
606 bool "Sibyte BCM91250E-Sentosa"
607 depends on EXPERIMENTAL
610 select NR_CPUS_DEFAULT_2
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_LITTLE_ENDIAN
618 bool "Sibyte BCM91480B-BigSur"
621 select NR_CPUS_DEFAULT_4
622 select SIBYTE_BCM1x80
624 select SYS_HAS_CPU_SB1
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select SYS_SUPPORTS_HIGHMEM
627 select SYS_SUPPORTS_LITTLE_ENDIAN
628 select ZONE_DMA32 if 64BIT
631 bool "SNI RM200/300/400"
632 select ARC if CPU_LITTLE_ENDIAN
633 select ARC32 if CPU_LITTLE_ENDIAN
634 select SNIPROM if CPU_BIG_ENDIAN
635 select ARCH_MAY_HAVE_PC_FDC
639 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
640 select DMA_NONCOHERENT
641 select GENERIC_ISA_DMA
642 select HAVE_PCSPKR_PLATFORM
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
724 The Octeon simulator is software performance model of the Cavium
725 Octeon Processor. It supports simulating Octeon processors on x86
728 config CAVIUM_OCTEON_REFERENCE_BOARD
729 bool "Cavium Networks Octeon reference board"
731 select 64BIT_PHYS_ADDR
733 select SYS_SUPPORTS_64BIT_KERNEL
734 select SYS_SUPPORTS_BIG_ENDIAN
735 select SYS_SUPPORTS_HIGHMEM
736 select SYS_SUPPORTS_HOTPLUG_CPU
737 select SYS_HAS_EARLY_PRINTK
738 select SYS_HAS_CPU_CAVIUM_OCTEON
741 select ARCH_SUPPORTS_MSI
743 select USB_ARCH_HAS_OHCI
744 select USB_ARCH_HAS_EHCI
747 This option supports all of the Octeon reference boards from Cavium
748 Networks. It builds a kernel that dynamically determines the Octeon
749 CPU type and supports all known board reference implementations.
750 Some of the supported boards are:
757 Say Y here for most Octeon reference boards.
760 bool "Netlogic XLR/XLS based systems"
761 depends on EXPERIMENTAL
765 select SYS_HAS_CPU_XLR
766 select SYS_SUPPORTS_SMP
769 select SYS_SUPPORTS_32BIT_KERNEL
770 select SYS_SUPPORTS_64BIT_KERNEL
771 select 64BIT_PHYS_ADDR
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select SYS_SUPPORTS_HIGHMEM
775 select NR_CPUS_DEFAULT_32
779 select ZONE_DMA if 64BIT
781 select SYS_HAS_EARLY_PRINTK
783 Support for systems based on Netlogic XLR and XLS processors.
784 Say Y here if you have a XLR or XLS based board.
788 source "arch/mips/alchemy/Kconfig"
789 source "arch/mips/ath79/Kconfig"
790 source "arch/mips/bcm47xx/Kconfig"
791 source "arch/mips/bcm63xx/Kconfig"
792 source "arch/mips/jazz/Kconfig"
793 source "arch/mips/jz4740/Kconfig"
794 source "arch/mips/lantiq/Kconfig"
795 source "arch/mips/lasat/Kconfig"
796 source "arch/mips/pmc-sierra/Kconfig"
797 source "arch/mips/powertv/Kconfig"
798 source "arch/mips/sgi-ip27/Kconfig"
799 source "arch/mips/sibyte/Kconfig"
800 source "arch/mips/txx9/Kconfig"
801 source "arch/mips/vr41xx/Kconfig"
802 source "arch/mips/cavium-octeon/Kconfig"
803 source "arch/mips/loongson/Kconfig"
804 source "arch/mips/netlogic/Kconfig"
808 config RWSEM_GENERIC_SPINLOCK
812 config RWSEM_XCHGADD_ALGORITHM
815 config ARCH_HAS_ILOG2_U32
819 config ARCH_HAS_ILOG2_U64
823 config ARCH_SUPPORTS_OPROFILE
825 default y if !MIPS_MT_SMTC
827 config GENERIC_HWEIGHT
831 config GENERIC_CALIBRATE_DELAY
835 config GENERIC_CLOCKEVENTS
839 config GENERIC_CMOS_UPDATE
843 config SCHED_OMIT_FRAME_POINTER
848 # Select some configuration options automatically based on user selections.
853 config ARCH_MAY_HAVE_PC_FDC
902 select ARCH_REQUIRE_GPIOLIB
908 config ARCH_DMA_ADDR_T_64BIT
909 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
914 config DMA_NONCOHERENT
916 select NEED_DMA_MAP_STATE
918 config NEED_DMA_MAP_STATE
921 config SYS_HAS_EARLY_PRINTK
925 bool "Support for hot-pluggable CPUs"
926 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
928 Say Y here to allow turning CPUs off and on. CPUs can be
929 controlled through /sys/devices/system/cpu.
930 (Note: power management support will enable this option
931 automatically on SMP systems. )
932 Say N if you want to disable CPU hotplug.
934 config SYS_SUPPORTS_HOTPLUG_CPU
949 config MIPS_DISABLE_OBSOLETE_IDE
961 config GENERIC_ISA_DMA
963 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
966 config GENERIC_ISA_DMA_SUPPORT_BROKEN
968 select GENERIC_ISA_DMA
980 # Endianess selection. Sufficiently obscure so many users don't know what to
981 # answer,so we try hard to limit the available choices. Also the use of a
982 # choice statement should be more obvious to the user.
985 prompt "Endianess selection"
987 Some MIPS machines can be configured for either little or big endian
988 byte order. These modes require different kernels and a different
989 Linux distribution. In general there is one preferred byteorder for a
990 particular system but some systems are just as commonly used in the
991 one or the other endianness.
993 config CPU_BIG_ENDIAN
995 depends on SYS_SUPPORTS_BIG_ENDIAN
997 config CPU_LITTLE_ENDIAN
999 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1007 config SYS_SUPPORTS_APM_EMULATION
1010 config SYS_SUPPORTS_BIG_ENDIAN
1013 config SYS_SUPPORTS_LITTLE_ENDIAN
1016 config SYS_SUPPORTS_HUGETLBFS
1018 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1045 config MIPS_BOARDS_GEN
1048 config PCI_GT64XXX_PCI0
1051 config NO_EXCEPT_FILL
1056 select SERIAL_RM9000
1062 select DMA_NONCOHERENT
1064 select SWAP_IO_SPACE
1065 select SYS_HAS_CPU_R5500
1066 select SYS_SUPPORTS_32BIT_KERNEL
1067 select SYS_SUPPORTS_64BIT_KERNEL
1068 select SYS_SUPPORTS_BIG_ENDIAN
1075 select DMA_NONCOHERENT
1076 select SYS_HAS_CPU_MIPS32_R2
1077 select SYS_SUPPORTS_32BIT_KERNEL
1078 select SYS_SUPPORTS_LITTLE_ENDIAN
1079 select SYS_SUPPORTS_BIG_ENDIAN
1081 select CPU_MIPSR2_IRQ_VI
1093 select DMA_NONCOHERENT
1095 select SYS_HAS_CPU_MIPS32_R1
1096 select SYS_HAS_EARLY_PRINTK
1097 select SYS_SUPPORTS_32BIT_KERNEL
1100 config SWAP_IO_SPACE
1103 config SERIAL_RM9000
1106 config SGI_HAS_INDYDOG
1118 config SGI_HAS_ZILOG
1121 config SGI_HAS_I8042
1124 config DEFAULT_SGI_PARTITION
1136 config MIPS_L1_CACHE_SHIFT
1138 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1139 default "6" if MIPS_CPU_SCACHE
1140 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1143 config HAVE_STD_PC_SERIAL_PORT
1147 bool "ARC console support"
1148 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1152 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1157 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1166 menu "CPU selection"
1172 config CPU_LOONGSON2E
1174 depends on SYS_HAS_CPU_LOONGSON2E
1175 select CPU_LOONGSON2
1177 The Loongson 2E processor implements the MIPS III instruction set
1178 with many extensions.
1180 It has an internal FPGA northbridge, which is compatible to
1183 config CPU_LOONGSON2F
1185 depends on SYS_HAS_CPU_LOONGSON2F
1186 select CPU_LOONGSON2
1188 select ARCH_REQUIRE_GPIOLIB
1190 The Loongson 2F processor implements the MIPS III instruction set
1191 with many extensions.
1193 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1194 have a similar programming interface with FPGA northbridge used in
1197 config CPU_MIPS32_R1
1198 bool "MIPS32 Release 1"
1199 depends on SYS_HAS_CPU_MIPS32_R1
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_HIGHMEM
1204 Choose this option to build a kernel for release 1 or later of the
1205 MIPS32 architecture. Most modern embedded systems with a 32-bit
1206 MIPS processor are based on a MIPS32 processor. If you know the
1207 specific type of processor in your system, choose those that one
1208 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1209 Release 2 of the MIPS32 architecture is available since several
1210 years so chances are you even have a MIPS32 Release 2 processor
1211 in which case you should choose CPU_MIPS32_R2 instead for better
1214 config CPU_MIPS32_R2
1215 bool "MIPS32 Release 2"
1216 depends on SYS_HAS_CPU_MIPS32_R2
1217 select CPU_HAS_PREFETCH
1218 select CPU_SUPPORTS_32BIT_KERNEL
1219 select CPU_SUPPORTS_HIGHMEM
1221 Choose this option to build a kernel for release 2 or later of the
1222 MIPS32 architecture. Most modern embedded systems with a 32-bit
1223 MIPS processor are based on a MIPS32 processor. If you know the
1224 specific type of processor in your system, choose those that one
1225 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1227 config CPU_MIPS64_R1
1228 bool "MIPS64 Release 1"
1229 depends on SYS_HAS_CPU_MIPS64_R1
1230 select CPU_HAS_PREFETCH
1231 select CPU_SUPPORTS_32BIT_KERNEL
1232 select CPU_SUPPORTS_64BIT_KERNEL
1233 select CPU_SUPPORTS_HIGHMEM
1234 select CPU_SUPPORTS_HUGEPAGES
1236 Choose this option to build a kernel for release 1 or later of the
1237 MIPS64 architecture. Many modern embedded systems with a 64-bit
1238 MIPS processor are based on a MIPS64 processor. If you know the
1239 specific type of processor in your system, choose those that one
1240 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1241 Release 2 of the MIPS64 architecture is available since several
1242 years so chances are you even have a MIPS64 Release 2 processor
1243 in which case you should choose CPU_MIPS64_R2 instead for better
1246 config CPU_MIPS64_R2
1247 bool "MIPS64 Release 2"
1248 depends on SYS_HAS_CPU_MIPS64_R2
1249 select CPU_HAS_PREFETCH
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_64BIT_KERNEL
1252 select CPU_SUPPORTS_HIGHMEM
1253 select CPU_SUPPORTS_HUGEPAGES
1255 Choose this option to build a kernel for release 2 or later of the
1256 MIPS64 architecture. Many modern embedded systems with a 64-bit
1257 MIPS processor are based on a MIPS64 processor. If you know the
1258 specific type of processor in your system, choose those that one
1259 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1263 depends on SYS_HAS_CPU_R3000
1265 select CPU_SUPPORTS_32BIT_KERNEL
1266 select CPU_SUPPORTS_HIGHMEM
1268 Please make sure to pick the right CPU type. Linux/MIPS is not
1269 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1270 *not* work on R4000 machines and vice versa. However, since most
1271 of the supported machines have an R4000 (or similar) CPU, R4x00
1272 might be a safe bet. If the resulting kernel does not work,
1273 try to recompile with R3000.
1277 depends on SYS_HAS_CPU_TX39XX
1278 select CPU_SUPPORTS_32BIT_KERNEL
1282 depends on SYS_HAS_CPU_VR41XX
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_64BIT_KERNEL
1286 The options selects support for the NEC VR4100 series of processors.
1287 Only choose this option if you have one of these processors as a
1288 kernel built with this option will not run on any other type of
1289 processor or vice versa.
1293 depends on SYS_HAS_CPU_R4300
1294 select CPU_SUPPORTS_32BIT_KERNEL
1295 select CPU_SUPPORTS_64BIT_KERNEL
1297 MIPS Technologies R4300-series processors.
1301 depends on SYS_HAS_CPU_R4X00
1302 select CPU_SUPPORTS_32BIT_KERNEL
1303 select CPU_SUPPORTS_64BIT_KERNEL
1305 MIPS Technologies R4000-series processors other than 4300, including
1306 the R4000, R4400, R4600, and 4700.
1310 depends on SYS_HAS_CPU_TX49XX
1311 select CPU_HAS_PREFETCH
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_64BIT_KERNEL
1317 depends on SYS_HAS_CPU_R5000
1318 select CPU_SUPPORTS_32BIT_KERNEL
1319 select CPU_SUPPORTS_64BIT_KERNEL
1321 MIPS Technologies R5000-series processors other than the Nevada.
1325 depends on SYS_HAS_CPU_R5432
1326 select CPU_SUPPORTS_32BIT_KERNEL
1327 select CPU_SUPPORTS_64BIT_KERNEL
1331 depends on SYS_HAS_CPU_R5500
1332 select CPU_SUPPORTS_32BIT_KERNEL
1333 select CPU_SUPPORTS_64BIT_KERNEL
1334 select CPU_SUPPORTS_HUGEPAGES
1336 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1341 depends on EXPERIMENTAL
1342 depends on SYS_HAS_CPU_R6000
1343 select CPU_SUPPORTS_32BIT_KERNEL
1345 MIPS Technologies R6000 and R6000A series processors. Note these
1346 processors are extremely rare and the support for them is incomplete.
1350 depends on SYS_HAS_CPU_NEVADA
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_64BIT_KERNEL
1354 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1358 depends on EXPERIMENTAL
1359 depends on SYS_HAS_CPU_R8000
1360 select CPU_HAS_PREFETCH
1361 select CPU_SUPPORTS_64BIT_KERNEL
1363 MIPS Technologies R8000 processors. Note these processors are
1364 uncommon and the support for them is incomplete.
1368 depends on SYS_HAS_CPU_R10000
1369 select CPU_HAS_PREFETCH
1370 select CPU_SUPPORTS_32BIT_KERNEL
1371 select CPU_SUPPORTS_64BIT_KERNEL
1372 select CPU_SUPPORTS_HIGHMEM
1374 MIPS Technologies R10000-series processors.
1378 depends on SYS_HAS_CPU_RM7000
1379 select CPU_HAS_PREFETCH
1380 select CPU_SUPPORTS_32BIT_KERNEL
1381 select CPU_SUPPORTS_64BIT_KERNEL
1382 select CPU_SUPPORTS_HIGHMEM
1386 depends on SYS_HAS_CPU_RM9000
1387 select CPU_HAS_PREFETCH
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select CPU_SUPPORTS_64BIT_KERNEL
1390 select CPU_SUPPORTS_HIGHMEM
1391 select WEAK_ORDERING
1395 depends on SYS_HAS_CPU_SB1
1396 select CPU_SUPPORTS_32BIT_KERNEL
1397 select CPU_SUPPORTS_64BIT_KERNEL
1398 select CPU_SUPPORTS_HIGHMEM
1399 select WEAK_ORDERING
1401 config CPU_CAVIUM_OCTEON
1402 bool "Cavium Octeon processor"
1403 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1404 select CPU_HAS_PREFETCH
1405 select CPU_SUPPORTS_64BIT_KERNEL
1406 select SYS_SUPPORTS_SMP
1407 select NR_CPUS_DEFAULT_16
1408 select WEAK_ORDERING
1409 select CPU_SUPPORTS_HIGHMEM
1410 select CPU_SUPPORTS_HUGEPAGES
1412 The Cavium Octeon processor is a highly integrated chip containing
1413 many ethernet hardware widgets for networking tasks. The processor
1414 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1415 Full details can be found at http://www.caviumnetworks.com.
1417 config CPU_BMIPS3300
1419 depends on SYS_HAS_CPU_BMIPS3300
1420 select DMA_NONCOHERENT
1422 select SWAP_IO_SPACE
1423 select SYS_SUPPORTS_32BIT_KERNEL
1424 select WEAK_ORDERING
1426 Broadcom BMIPS3300 processors.
1428 config CPU_BMIPS4350
1430 depends on SYS_HAS_CPU_BMIPS4350
1431 select CPU_SUPPORTS_32BIT_KERNEL
1432 select DMA_NONCOHERENT
1434 select SWAP_IO_SPACE
1435 select SYS_SUPPORTS_SMP
1436 select SYS_SUPPORTS_HOTPLUG_CPU
1437 select WEAK_ORDERING
1439 Broadcom BMIPS4350 ("VIPER") processors.
1441 config CPU_BMIPS4380
1443 depends on SYS_HAS_CPU_BMIPS4380
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select DMA_NONCOHERENT
1447 select SWAP_IO_SPACE
1448 select SYS_SUPPORTS_SMP
1449 select SYS_SUPPORTS_HOTPLUG_CPU
1450 select WEAK_ORDERING
1452 Broadcom BMIPS4380 processors.
1454 config CPU_BMIPS5000
1456 depends on SYS_HAS_CPU_BMIPS5000
1457 select CPU_SUPPORTS_32BIT_KERNEL
1458 select CPU_SUPPORTS_HIGHMEM
1459 select DMA_NONCOHERENT
1461 select SWAP_IO_SPACE
1462 select SYS_SUPPORTS_SMP
1463 select SYS_SUPPORTS_HOTPLUG_CPU
1464 select WEAK_ORDERING
1466 Broadcom BMIPS5000 processors.
1469 bool "Netlogic XLR SoC"
1470 depends on SYS_HAS_CPU_XLR
1471 select CPU_SUPPORTS_32BIT_KERNEL
1472 select CPU_SUPPORTS_64BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select WEAK_ORDERING
1475 select WEAK_REORDERING_BEYOND_LLSC
1476 select CPU_SUPPORTS_HUGEPAGES
1478 Netlogic Microsystems XLR/XLS processors.
1482 config CPU_NOP_WORKAROUNDS
1485 config CPU_JUMP_WORKAROUNDS
1488 config CPU_LOONGSON2F_WORKAROUNDS
1489 bool "Loongson 2F Workarounds"
1491 select CPU_NOP_WORKAROUNDS
1492 select CPU_JUMP_WORKAROUNDS
1494 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1495 require workarounds. Without workarounds the system may hang
1496 unexpectedly. For more information please refer to the gas
1497 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1499 Loongson 2F03 and later have fixed these issues and no workarounds
1500 are needed. The workarounds have no significant side effect on them
1501 but may decrease the performance of the system so this option should
1502 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1505 If unsure, please say Y.
1506 endif # CPU_LOONGSON2F
1508 config SYS_SUPPORTS_ZBOOT
1510 select HAVE_KERNEL_GZIP
1511 select HAVE_KERNEL_BZIP2
1512 select HAVE_KERNEL_LZMA
1513 select HAVE_KERNEL_LZO
1515 config SYS_SUPPORTS_ZBOOT_UART16550
1517 select SYS_SUPPORTS_ZBOOT
1519 config CPU_LOONGSON2
1521 select CPU_SUPPORTS_32BIT_KERNEL
1522 select CPU_SUPPORTS_64BIT_KERNEL
1523 select CPU_SUPPORTS_HIGHMEM
1525 config SYS_HAS_CPU_LOONGSON2E
1528 config SYS_HAS_CPU_LOONGSON2F
1530 select CPU_SUPPORTS_CPUFREQ
1531 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1532 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1534 config SYS_HAS_CPU_MIPS32_R1
1537 config SYS_HAS_CPU_MIPS32_R2
1540 config SYS_HAS_CPU_MIPS64_R1
1543 config SYS_HAS_CPU_MIPS64_R2
1546 config SYS_HAS_CPU_R3000
1549 config SYS_HAS_CPU_TX39XX
1552 config SYS_HAS_CPU_VR41XX
1555 config SYS_HAS_CPU_R4300
1558 config SYS_HAS_CPU_R4X00
1561 config SYS_HAS_CPU_TX49XX
1564 config SYS_HAS_CPU_R5000
1567 config SYS_HAS_CPU_R5432
1570 config SYS_HAS_CPU_R5500
1573 config SYS_HAS_CPU_R6000
1576 config SYS_HAS_CPU_NEVADA
1579 config SYS_HAS_CPU_R8000
1582 config SYS_HAS_CPU_R10000
1585 config SYS_HAS_CPU_RM7000
1588 config SYS_HAS_CPU_RM9000
1591 config SYS_HAS_CPU_SB1
1594 config SYS_HAS_CPU_CAVIUM_OCTEON
1597 config SYS_HAS_CPU_BMIPS3300
1600 config SYS_HAS_CPU_BMIPS4350
1603 config SYS_HAS_CPU_BMIPS4380
1606 config SYS_HAS_CPU_BMIPS5000
1609 config SYS_HAS_CPU_XLR
1613 # CPU may reorder R->R, R->W, W->R, W->W
1614 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1616 config WEAK_ORDERING
1620 # CPU may reorder reads and writes beyond LL/SC
1621 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1623 config WEAK_REORDERING_BEYOND_LLSC
1628 # These two indicate any level of the MIPS32 and MIPS64 architecture
1632 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1636 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1639 # These two indicate the revision of the architecture, either Release 1 or Release 2
1643 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1647 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1649 config SYS_SUPPORTS_32BIT_KERNEL
1651 config SYS_SUPPORTS_64BIT_KERNEL
1653 config CPU_SUPPORTS_32BIT_KERNEL
1655 config CPU_SUPPORTS_64BIT_KERNEL
1657 config CPU_SUPPORTS_CPUFREQ
1659 config CPU_SUPPORTS_ADDRWINCFG
1661 config CPU_SUPPORTS_HUGEPAGES
1663 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1665 config MIPS_PGD_C0_CONTEXT
1667 default y if 64BIT && CPU_MIPSR2
1670 # Set to y for ptrace access to watch registers.
1672 config HARDWARE_WATCHPOINTS
1674 default y if CPU_MIPSR1 || CPU_MIPSR2
1680 prompt "Kernel code model"
1682 You should only select this option if you have a workload that
1683 actually benefits from 64-bit processing or if your machine has
1684 large memory. You will only be presented a single option in this
1685 menu if your system does not support both 32-bit and 64-bit kernels.
1688 bool "32-bit kernel"
1689 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1692 Select this option if you want to build a 32-bit kernel.
1694 bool "64-bit kernel"
1695 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1696 select HAVE_SYSCALL_WRAPPERS
1698 Select this option if you want to build a 64-bit kernel.
1703 prompt "Kernel page size"
1704 default PAGE_SIZE_4KB
1706 config PAGE_SIZE_4KB
1708 depends on !CPU_LOONGSON2
1710 This option select the standard 4kB Linux page size. On some
1711 R3000-family processors this is the only available page size. Using
1712 4kB page size will minimize memory consumption and is therefore
1713 recommended for low memory systems.
1715 config PAGE_SIZE_8KB
1717 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1719 Using 8kB page size will result in higher performance kernel at
1720 the price of higher memory consumption. This option is available
1721 only on R8000 and cnMIPS processors. Note that you will need a
1722 suitable Linux distribution to support this.
1724 config PAGE_SIZE_16KB
1726 depends on !CPU_R3000 && !CPU_TX39XX
1728 Using 16kB page size will result in higher performance kernel at
1729 the price of higher memory consumption. This option is available on
1730 all non-R3000 family processors. Note that you will need a suitable
1731 Linux distribution to support this.
1733 config PAGE_SIZE_32KB
1735 depends on CPU_CAVIUM_OCTEON
1737 Using 32kB page size will result in higher performance kernel at
1738 the price of higher memory consumption. This option is available
1739 only on cnMIPS cores. Note that you will need a suitable Linux
1740 distribution to support this.
1742 config PAGE_SIZE_64KB
1744 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1746 Using 64kB page size will result in higher performance kernel at
1747 the price of higher memory consumption. This option is available on
1748 all non-R3000 family processor. Not that at the time of this
1749 writing this option is still high experimental.
1753 config FORCE_MAX_ZONEORDER
1754 int "Maximum zone order"
1755 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1756 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1757 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1758 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1762 The kernel memory allocator divides physically contiguous memory
1763 blocks into "zones", where each zone is a power of two number of
1764 pages. This option selects the largest power of two that the kernel
1765 keeps in the memory allocator. If you need to allocate very large
1766 blocks of physically contiguous memory, then you may need to
1767 increase this value.
1769 This config option is actually maximum order plus one. For example,
1770 a value of 11 means that the largest free memory block is 2^10 pages.
1772 The page size is not necessarily 4KB. Keep this in mind
1773 when choosing a value for this option.
1778 config IP22_CPU_SCACHE
1783 # Support for a MIPS32 / MIPS64 style S-caches
1785 config MIPS_CPU_SCACHE
1789 config R5000_CPU_SCACHE
1793 config RM7000_CPU_SCACHE
1797 config SIBYTE_DMA_PAGEOPS
1798 bool "Use DMA to clear/copy pages"
1801 Instead of using the CPU to zero and copy pages, use a Data Mover
1802 channel. These DMA channels are otherwise unused by the standard
1803 SiByte Linux port. Seems to give a small performance benefit.
1805 config CPU_HAS_PREFETCH
1809 prompt "MIPS MT options"
1811 config MIPS_MT_DISABLED
1812 bool "Disable multithreading support."
1814 Use this option if your workload can't take advantage of
1815 MIPS hardware multithreading support. On systems that don't have
1816 the option of an MT-enabled processor this option will be the only
1817 option in this menu.
1820 bool "Use 1 TC on each available VPE for SMP"
1821 depends on SYS_SUPPORTS_MULTITHREADING
1822 select CPU_MIPSR2_IRQ_VI
1823 select CPU_MIPSR2_IRQ_EI
1825 select NR_CPUS_DEFAULT_2
1827 select SYS_SUPPORTS_SCHED_SMT if SMP
1828 select SYS_SUPPORTS_SMP
1831 This is a kernel model which is known a VSMP but lately has been
1832 marketesed into SMVP.
1833 Virtual SMP uses the processor's VPEs to implement virtual
1834 processors. In currently available configuration of the 34K processor
1835 this allows for a dual processor. Both processors will share the same
1836 primary caches; each will obtain the half of the TLB for it's own
1837 exclusive use. For a layman this model can be described as similar to
1838 what Intel calls Hyperthreading.
1840 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1843 bool "SMTC: Use all TCs on all VPEs for SMP"
1844 depends on CPU_MIPS32_R2
1845 #depends on CPU_MIPS64_R2 # once there is hardware ...
1846 depends on SYS_SUPPORTS_MULTITHREADING
1847 select CPU_MIPSR2_IRQ_VI
1848 select CPU_MIPSR2_IRQ_EI
1850 select NR_CPUS_DEFAULT_8
1852 select SYS_SUPPORTS_SMP
1855 This is a kernel model which is known a SMTC or lately has been
1856 marketesed into SMVP.
1857 is presenting the available TC's of the core as processors to Linux.
1858 On currently available 34K processors this means a Linux system will
1859 see up to 5 processors. The implementation of the SMTC kernel differs
1860 significantly from VSMP and cannot efficiently coexist in the same
1861 kernel binary so the choice between VSMP and SMTC is a compile time
1864 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1872 bool "SMT (multithreading) scheduler support"
1873 depends on SYS_SUPPORTS_SCHED_SMT
1876 SMT scheduler support improves the CPU scheduler's decision making
1877 when dealing with MIPS MT enabled cores at a cost of slightly
1878 increased overhead in some places. If unsure say N here.
1880 config SYS_SUPPORTS_SCHED_SMT
1884 config SYS_SUPPORTS_MULTITHREADING
1887 config MIPS_MT_FPAFF
1888 bool "Dynamic FPU affinity for FP-intensive threads"
1890 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1892 config MIPS_VPE_LOADER
1893 bool "VPE loader support."
1894 depends on SYS_SUPPORTS_MULTITHREADING
1895 select CPU_MIPSR2_IRQ_VI
1896 select CPU_MIPSR2_IRQ_EI
1899 Includes a loader for loading an elf relocatable object
1900 onto another VPE and running it.
1902 config MIPS_MT_SMTC_IM_BACKSTOP
1903 bool "Use per-TC register bits as backstop for inhibited IM bits"
1904 depends on MIPS_MT_SMTC
1907 To support multiple TC microthreads acting as "CPUs" within
1908 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1909 during interrupt handling. To support legacy drivers and interrupt
1910 controller management code, SMTC has a "backstop" to track and
1911 if necessary restore the interrupt mask. This has some performance
1912 impact on interrupt service overhead.
1914 config MIPS_MT_SMTC_IRQAFF
1915 bool "Support IRQ affinity API"
1916 depends on MIPS_MT_SMTC
1919 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1920 for SMTC Linux kernel. Requires platform support, of which
1921 an example can be found in the MIPS kernel i8259 and Malta
1922 platform code. Adds some overhead to interrupt dispatch, and
1923 should be used only if you know what you are doing.
1925 config MIPS_VPE_LOADER_TOM
1926 bool "Load VPE program into memory hidden from linux"
1927 depends on MIPS_VPE_LOADER
1930 The loader can use memory that is present but has been hidden from
1931 Linux using the kernel command line option "mem=xxMB". It's up to
1932 you to ensure the amount you put in the option and the space your
1933 program requires is less or equal to the amount physically present.
1935 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1936 config MIPS_VPE_APSP_API
1937 bool "Enable support for AP/SP API (RTLX)"
1938 depends on MIPS_VPE_LOADER
1941 config MIPS_APSP_KSPD
1943 depends on MIPS_VPE_APSP_API
1946 KSPD is a kernel daemon that accepts syscall requests from the SP
1947 side, actions them and returns the results. It also handles the
1948 "exit" syscall notifying other kernel modules the SP program is
1949 exiting. You probably want to say yes here.
1952 bool "MIPS CMP framework support"
1953 depends on SYS_SUPPORTS_MIPS_CMP
1955 select SYS_SUPPORTS_SMP
1956 select SYS_SUPPORTS_SCHED_SMT if SMP
1957 select WEAK_ORDERING
1960 This is a placeholder option for the GCMP work. It will need to
1961 be handled differently...
1963 config SB1_PASS_1_WORKAROUNDS
1965 depends on CPU_SB1_PASS_1
1968 config SB1_PASS_2_WORKAROUNDS
1970 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1973 config SB1_PASS_2_1_WORKAROUNDS
1975 depends on CPU_SB1 && CPU_SB1_PASS_2
1978 config 64BIT_PHYS_ADDR
1981 config ARCH_PHYS_ADDR_T_64BIT
1982 def_bool 64BIT_PHYS_ADDR
1984 config CPU_HAS_SMARTMIPS
1985 depends on SYS_SUPPORTS_SMARTMIPS
1986 bool "Support for the SmartMIPS ASE"
1988 SmartMIPS is a extension of the MIPS32 architecture aimed at
1989 increased security at both hardware and software level for
1990 smartcards. Enabling this option will allow proper use of the
1991 SmartMIPS instructions by Linux applications. However a kernel with
1992 this option will not work on a MIPS core without SmartMIPS core. If
1993 you don't know you probably don't have SmartMIPS and should say N
2000 # Vectored interrupt mode is an R2 feature
2002 config CPU_MIPSR2_IRQ_VI
2006 # Extended interrupt mode is an R2 feature
2008 config CPU_MIPSR2_IRQ_EI
2013 depends on !CPU_R3000
2016 config GENERIC_CLOCKEVENTS_BROADCAST
2022 config CPU_DADDI_WORKAROUNDS
2025 config CPU_R4000_WORKAROUNDS
2027 select CPU_R4400_WORKAROUNDS
2029 config CPU_R4400_WORKAROUNDS
2033 # - Highmem only makes sense for the 32-bit kernel.
2034 # - The current highmem code will only work properly on physically indexed
2035 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2036 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2037 # moment we protect the user and offer the highmem option only on machines
2038 # where it's known to be safe. This will not offer highmem on a few systems
2039 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2040 # indexed CPUs but we're playing safe.
2041 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2042 # know they might have memory configurations that could make use of highmem
2046 bool "High Memory Support"
2047 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2049 config CPU_SUPPORTS_HIGHMEM
2052 config SYS_SUPPORTS_HIGHMEM
2055 config SYS_SUPPORTS_SMARTMIPS
2058 config ARCH_FLATMEM_ENABLE
2060 depends on !NUMA && !CPU_LOONGSON2
2062 config ARCH_DISCONTIGMEM_ENABLE
2064 default y if SGI_IP27
2066 Say Y to support efficient handling of discontiguous physical memory,
2067 for architectures which are either NUMA (Non-Uniform Memory Access)
2068 or have huge holes in the physical address space for other reasons.
2069 See <file:Documentation/vm/numa> for more.
2071 config ARCH_POPULATES_NODE_MAP
2074 config ARCH_SPARSEMEM_ENABLE
2076 select SPARSEMEM_STATIC
2080 depends on SYS_SUPPORTS_NUMA
2082 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2083 Access). This option improves performance on systems with more
2084 than two nodes; on two node systems it is generally better to
2085 leave it disabled; on single node systems disable this option
2088 config SYS_SUPPORTS_NUMA
2094 depends on NEED_MULTIPLE_NODES
2096 config HW_PERF_EVENTS
2097 bool "Enable hardware performance counter support for perf events"
2098 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2101 Enable hardware performance counter support for perf events. If
2102 disabled, perf events will use software events only.
2107 bool "Multi-Processing support"
2108 depends on SYS_SUPPORTS_SMP
2110 select USE_GENERIC_SMP_HELPERS
2112 This enables support for systems with more than one CPU. If you have
2113 a system with only one CPU, like most personal computers, say N. If
2114 you have a system with more than one CPU, say Y.
2116 If you say N here, the kernel will run on single and multiprocessor
2117 machines, but will use only one CPU of a multiprocessor machine. If
2118 you say Y here, the kernel will run on many, but not all,
2119 singleprocessor machines. On a singleprocessor machine, the kernel
2120 will run faster if you say N here.
2122 People using multiprocessor machines who say Y here should also say
2123 Y to "Enhanced Real Time Clock Support", below.
2125 See also the SMP-HOWTO available at
2126 <http://www.tldp.org/docs.html#howto>.
2128 If you don't know what to do here, say N.
2133 config SYS_SUPPORTS_MIPS_CMP
2136 config SYS_SUPPORTS_SMP
2139 config NR_CPUS_DEFAULT_1
2142 config NR_CPUS_DEFAULT_2
2145 config NR_CPUS_DEFAULT_4
2148 config NR_CPUS_DEFAULT_8
2151 config NR_CPUS_DEFAULT_16
2154 config NR_CPUS_DEFAULT_32
2157 config NR_CPUS_DEFAULT_64
2161 int "Maximum number of CPUs (2-64)"
2162 range 1 64 if NR_CPUS_DEFAULT_1
2164 default "1" if NR_CPUS_DEFAULT_1
2165 default "2" if NR_CPUS_DEFAULT_2
2166 default "4" if NR_CPUS_DEFAULT_4
2167 default "8" if NR_CPUS_DEFAULT_8
2168 default "16" if NR_CPUS_DEFAULT_16
2169 default "32" if NR_CPUS_DEFAULT_32
2170 default "64" if NR_CPUS_DEFAULT_64
2172 This allows you to specify the maximum number of CPUs which this
2173 kernel will support. The maximum supported value is 32 for 32-bit
2174 kernel and 64 for 64-bit kernels; the minimum value which makes
2175 sense is 1 for Qemu (useful only for kernel debugging purposes)
2176 and 2 for all others.
2178 This is purely to save memory - each supported CPU adds
2179 approximately eight kilobytes to the kernel image. For best
2180 performance should round up your number of processors to the next
2183 source "kernel/time/Kconfig"
2186 # Timer Interrupt Frequency Configuration
2190 prompt "Timer frequency"
2193 Allows the configuration of the timer frequency.
2196 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2199 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2202 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2205 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2208 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2211 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2214 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2218 config SYS_SUPPORTS_48HZ
2221 config SYS_SUPPORTS_100HZ
2224 config SYS_SUPPORTS_128HZ
2227 config SYS_SUPPORTS_250HZ
2230 config SYS_SUPPORTS_256HZ
2233 config SYS_SUPPORTS_1000HZ
2236 config SYS_SUPPORTS_1024HZ
2239 config SYS_SUPPORTS_ARBIT_HZ
2241 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2242 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2243 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2244 !SYS_SUPPORTS_1024HZ
2249 default 100 if HZ_100
2250 default 128 if HZ_128
2251 default 250 if HZ_250
2252 default 256 if HZ_256
2253 default 1000 if HZ_1000
2254 default 1024 if HZ_1024
2256 source "kernel/Kconfig.preempt"
2258 config MIPS_INSANE_LARGE
2259 bool "Support for large 64-bit configurations"
2260 depends on CPU_R10000 && 64BIT
2262 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2263 previous 64-bit processors which only supported 40 bit / 1TB. If you
2264 need processes of more than 1TB virtual address space, say Y here.
2265 This will result in additional memory usage, so it is not
2266 recommended for normal users.
2269 bool "Kexec system call (EXPERIMENTAL)"
2270 depends on EXPERIMENTAL
2272 kexec is a system call that implements the ability to shutdown your
2273 current kernel, and to start another kernel. It is like a reboot
2274 but it is independent of the system firmware. And like a reboot
2275 you can start any kernel with it, not just Linux.
2277 The name comes from the similarity to the exec system call.
2279 It is an ongoing process to be certain the hardware in a machine
2280 is properly shutdown, so do not be surprised if this code does not
2281 initially work for you. It may help to enable device hotplugging
2282 support. As of this writing the exact hardware interface is
2283 strongly in flux, so no good recommendation can be made.
2286 bool "Enable seccomp to safely compute untrusted bytecode"
2290 This kernel feature is useful for number crunching applications
2291 that may need to compute untrusted bytecode during their
2292 execution. By using pipes or other transports made available to
2293 the process as file descriptors supporting the read/write
2294 syscalls, it's possible to isolate those applications in
2295 their own address space using seccomp. Once seccomp is
2296 enabled via /proc/<pid>/seccomp, it cannot be disabled
2297 and the task is only allowed to execute a few safe syscalls
2298 defined by each seccomp mode.
2300 If unsure, say Y. Only embedded should say N here.
2303 bool "Flattened Device Tree support"
2305 select OF_EARLY_FLATTREE
2307 Include support for flattened device tree machine descriptions.
2311 config LOCKDEP_SUPPORT
2315 config STACKTRACE_SUPPORT
2319 source "init/Kconfig"
2321 source "kernel/Kconfig.freezer"
2323 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2331 bool "Support for PCI controller"
2332 depends on HW_HAS_PCI
2335 Find out whether you have a PCI motherboard. PCI is the name of a
2336 bus system, i.e. the way the CPU talks to the other stuff inside
2337 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2343 source "drivers/pci/Kconfig"
2346 # ISA support is now enabled via select. Too many systems still have the one
2347 # or other ISA chip on the board that users don't know about so don't expect
2348 # users to choose the right thing ...
2355 depends on HW_HAS_EISA
2357 select GENERIC_ISA_DMA
2359 The Extended Industry Standard Architecture (EISA) bus was
2360 developed as an open alternative to the IBM MicroChannel bus.
2362 The EISA bus provided some of the features of the IBM MicroChannel
2363 bus while maintaining backward compatibility with cards made for
2364 the older ISA bus. The EISA bus saw limited use between 1988 and
2365 1995 when it was made obsolete by the PCI bus.
2367 Say Y here if you are building a kernel for an EISA-based machine.
2371 source "drivers/eisa/Kconfig"
2374 bool "TURBOchannel support"
2375 depends on MACH_DECSTATION
2377 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2378 processors. TURBOchannel programming specifications are available
2380 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2382 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2383 Linux driver support status is documented at:
2384 <http://www.linux-mips.org/wiki/DECstation>
2387 # bool "Access.Bus support"
2398 select MIPS_EXTERNAL_TIMER
2403 source "drivers/pcmcia/Kconfig"
2405 source "drivers/pci/hotplug/Kconfig"
2408 bool "RapidIO support"
2412 If you say Y here, the kernel will include drivers and
2413 infrastructure code to support RapidIO interconnect devices.
2415 source "drivers/rapidio/Kconfig"
2419 menu "Executable file formats"
2421 source "fs/Kconfig.binfmt"
2426 config MIPS32_COMPAT
2427 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2430 Select this option if you want Linux/MIPS 32-bit binary
2431 compatibility. Since all software available for Linux/MIPS is
2432 currently 32-bit you should say Y here.
2436 depends on MIPS32_COMPAT
2439 config SYSVIPC_COMPAT
2441 depends on COMPAT && SYSVIPC
2445 bool "Kernel support for o32 binaries"
2446 depends on MIPS32_COMPAT
2448 Select this option if you want to run o32 binaries. These are pure
2449 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2450 existing binaries are in this format.
2455 bool "Kernel support for n32 binaries"
2456 depends on MIPS32_COMPAT
2458 Select this option if you want to run n32 binaries. These are
2459 64-bit binaries using 32-bit quantities for addressing and certain
2460 data that would normally be 64-bit. They are used in special
2467 default y if MIPS32_O32 || MIPS32_N32
2471 menu "Power management options"
2473 config ARCH_HIBERNATION_POSSIBLE
2475 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2477 config ARCH_SUSPEND_POSSIBLE
2479 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2481 source "kernel/power/Kconfig"
2485 source "arch/mips/kernel/cpufreq/Kconfig"
2487 source "net/Kconfig"
2489 source "drivers/Kconfig"
2493 source "arch/mips/Kconfig.debug"
2495 source "security/Kconfig"
2497 source "crypto/Kconfig"
2499 source "lib/Kconfig"