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 GENERIC_HWEIGHT
827 config GENERIC_CALIBRATE_DELAY
831 config GENERIC_CLOCKEVENTS
835 config GENERIC_CMOS_UPDATE
839 config SCHED_OMIT_FRAME_POINTER
844 # Select some configuration options automatically based on user selections.
849 config ARCH_MAY_HAVE_PC_FDC
898 select ARCH_REQUIRE_GPIOLIB
904 config ARCH_DMA_ADDR_T_64BIT
905 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
910 config DMA_NONCOHERENT
912 select NEED_DMA_MAP_STATE
914 config NEED_DMA_MAP_STATE
917 config SYS_HAS_EARLY_PRINTK
921 bool "Support for hot-pluggable CPUs"
922 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
924 Say Y here to allow turning CPUs off and on. CPUs can be
925 controlled through /sys/devices/system/cpu.
926 (Note: power management support will enable this option
927 automatically on SMP systems. )
928 Say N if you want to disable CPU hotplug.
930 config SYS_SUPPORTS_HOTPLUG_CPU
945 config MIPS_DISABLE_OBSOLETE_IDE
957 config GENERIC_ISA_DMA
959 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
962 config GENERIC_ISA_DMA_SUPPORT_BROKEN
964 select GENERIC_ISA_DMA
976 # Endianess selection. Sufficiently obscure so many users don't know what to
977 # answer,so we try hard to limit the available choices. Also the use of a
978 # choice statement should be more obvious to the user.
981 prompt "Endianess selection"
983 Some MIPS machines can be configured for either little or big endian
984 byte order. These modes require different kernels and a different
985 Linux distribution. In general there is one preferred byteorder for a
986 particular system but some systems are just as commonly used in the
987 one or the other endianness.
989 config CPU_BIG_ENDIAN
991 depends on SYS_SUPPORTS_BIG_ENDIAN
993 config CPU_LITTLE_ENDIAN
995 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1003 config SYS_SUPPORTS_APM_EMULATION
1006 config SYS_SUPPORTS_BIG_ENDIAN
1009 config SYS_SUPPORTS_LITTLE_ENDIAN
1012 config SYS_SUPPORTS_HUGETLBFS
1014 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1041 config MIPS_BOARDS_GEN
1044 config PCI_GT64XXX_PCI0
1047 config NO_EXCEPT_FILL
1052 select SERIAL_RM9000
1058 select DMA_NONCOHERENT
1060 select SWAP_IO_SPACE
1061 select SYS_HAS_CPU_R5500
1062 select SYS_SUPPORTS_32BIT_KERNEL
1063 select SYS_SUPPORTS_64BIT_KERNEL
1064 select SYS_SUPPORTS_BIG_ENDIAN
1071 select DMA_NONCOHERENT
1072 select SYS_HAS_CPU_MIPS32_R2
1073 select SYS_SUPPORTS_32BIT_KERNEL
1074 select SYS_SUPPORTS_LITTLE_ENDIAN
1075 select SYS_SUPPORTS_BIG_ENDIAN
1077 select CPU_MIPSR2_IRQ_VI
1089 select DMA_NONCOHERENT
1091 select SYS_HAS_CPU_MIPS32_R1
1092 select SYS_HAS_EARLY_PRINTK
1093 select SYS_SUPPORTS_32BIT_KERNEL
1096 config SWAP_IO_SPACE
1099 config SERIAL_RM9000
1102 config SGI_HAS_INDYDOG
1114 config SGI_HAS_ZILOG
1117 config SGI_HAS_I8042
1120 config DEFAULT_SGI_PARTITION
1132 config MIPS_L1_CACHE_SHIFT
1134 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1135 default "6" if MIPS_CPU_SCACHE
1136 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1139 config HAVE_STD_PC_SERIAL_PORT
1143 bool "ARC console support"
1144 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1148 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1153 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1162 menu "CPU selection"
1168 config CPU_LOONGSON2E
1170 depends on SYS_HAS_CPU_LOONGSON2E
1171 select CPU_LOONGSON2
1173 The Loongson 2E processor implements the MIPS III instruction set
1174 with many extensions.
1176 It has an internal FPGA northbridge, which is compatible to
1179 config CPU_LOONGSON2F
1181 depends on SYS_HAS_CPU_LOONGSON2F
1182 select CPU_LOONGSON2
1184 select ARCH_REQUIRE_GPIOLIB
1186 The Loongson 2F processor implements the MIPS III instruction set
1187 with many extensions.
1189 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1190 have a similar programming interface with FPGA northbridge used in
1193 config CPU_MIPS32_R1
1194 bool "MIPS32 Release 1"
1195 depends on SYS_HAS_CPU_MIPS32_R1
1196 select CPU_HAS_PREFETCH
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1200 Choose this option to build a kernel for release 1 or later of the
1201 MIPS32 architecture. Most modern embedded systems with a 32-bit
1202 MIPS processor are based on a MIPS32 processor. If you know the
1203 specific type of processor in your system, choose those that one
1204 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1205 Release 2 of the MIPS32 architecture is available since several
1206 years so chances are you even have a MIPS32 Release 2 processor
1207 in which case you should choose CPU_MIPS32_R2 instead for better
1210 config CPU_MIPS32_R2
1211 bool "MIPS32 Release 2"
1212 depends on SYS_HAS_CPU_MIPS32_R2
1213 select CPU_HAS_PREFETCH
1214 select CPU_SUPPORTS_32BIT_KERNEL
1215 select CPU_SUPPORTS_HIGHMEM
1217 Choose this option to build a kernel for release 2 or later of the
1218 MIPS32 architecture. Most modern embedded systems with a 32-bit
1219 MIPS processor are based on a MIPS32 processor. If you know the
1220 specific type of processor in your system, choose those that one
1221 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1223 config CPU_MIPS64_R1
1224 bool "MIPS64 Release 1"
1225 depends on SYS_HAS_CPU_MIPS64_R1
1226 select CPU_HAS_PREFETCH
1227 select CPU_SUPPORTS_32BIT_KERNEL
1228 select CPU_SUPPORTS_64BIT_KERNEL
1229 select CPU_SUPPORTS_HIGHMEM
1230 select CPU_SUPPORTS_HUGEPAGES
1232 Choose this option to build a kernel for release 1 or later of the
1233 MIPS64 architecture. Many modern embedded systems with a 64-bit
1234 MIPS processor are based on a MIPS64 processor. If you know the
1235 specific type of processor in your system, choose those that one
1236 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1237 Release 2 of the MIPS64 architecture is available since several
1238 years so chances are you even have a MIPS64 Release 2 processor
1239 in which case you should choose CPU_MIPS64_R2 instead for better
1242 config CPU_MIPS64_R2
1243 bool "MIPS64 Release 2"
1244 depends on SYS_HAS_CPU_MIPS64_R2
1245 select CPU_HAS_PREFETCH
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_64BIT_KERNEL
1248 select CPU_SUPPORTS_HIGHMEM
1249 select CPU_SUPPORTS_HUGEPAGES
1251 Choose this option to build a kernel for release 2 or later of the
1252 MIPS64 architecture. Many modern embedded systems with a 64-bit
1253 MIPS processor are based on a MIPS64 processor. If you know the
1254 specific type of processor in your system, choose those that one
1255 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1259 depends on SYS_HAS_CPU_R3000
1261 select CPU_SUPPORTS_32BIT_KERNEL
1262 select CPU_SUPPORTS_HIGHMEM
1264 Please make sure to pick the right CPU type. Linux/MIPS is not
1265 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1266 *not* work on R4000 machines and vice versa. However, since most
1267 of the supported machines have an R4000 (or similar) CPU, R4x00
1268 might be a safe bet. If the resulting kernel does not work,
1269 try to recompile with R3000.
1273 depends on SYS_HAS_CPU_TX39XX
1274 select CPU_SUPPORTS_32BIT_KERNEL
1278 depends on SYS_HAS_CPU_VR41XX
1279 select CPU_SUPPORTS_32BIT_KERNEL
1280 select CPU_SUPPORTS_64BIT_KERNEL
1282 The options selects support for the NEC VR4100 series of processors.
1283 Only choose this option if you have one of these processors as a
1284 kernel built with this option will not run on any other type of
1285 processor or vice versa.
1289 depends on SYS_HAS_CPU_R4300
1290 select CPU_SUPPORTS_32BIT_KERNEL
1291 select CPU_SUPPORTS_64BIT_KERNEL
1293 MIPS Technologies R4300-series processors.
1297 depends on SYS_HAS_CPU_R4X00
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1301 MIPS Technologies R4000-series processors other than 4300, including
1302 the R4000, R4400, R4600, and 4700.
1306 depends on SYS_HAS_CPU_TX49XX
1307 select CPU_HAS_PREFETCH
1308 select CPU_SUPPORTS_32BIT_KERNEL
1309 select CPU_SUPPORTS_64BIT_KERNEL
1313 depends on SYS_HAS_CPU_R5000
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1317 MIPS Technologies R5000-series processors other than the Nevada.
1321 depends on SYS_HAS_CPU_R5432
1322 select CPU_SUPPORTS_32BIT_KERNEL
1323 select CPU_SUPPORTS_64BIT_KERNEL
1327 depends on SYS_HAS_CPU_R5500
1328 select CPU_SUPPORTS_32BIT_KERNEL
1329 select CPU_SUPPORTS_64BIT_KERNEL
1330 select CPU_SUPPORTS_HUGEPAGES
1332 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1337 depends on EXPERIMENTAL
1338 depends on SYS_HAS_CPU_R6000
1339 select CPU_SUPPORTS_32BIT_KERNEL
1341 MIPS Technologies R6000 and R6000A series processors. Note these
1342 processors are extremely rare and the support for them is incomplete.
1346 depends on SYS_HAS_CPU_NEVADA
1347 select CPU_SUPPORTS_32BIT_KERNEL
1348 select CPU_SUPPORTS_64BIT_KERNEL
1350 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1354 depends on EXPERIMENTAL
1355 depends on SYS_HAS_CPU_R8000
1356 select CPU_HAS_PREFETCH
1357 select CPU_SUPPORTS_64BIT_KERNEL
1359 MIPS Technologies R8000 processors. Note these processors are
1360 uncommon and the support for them is incomplete.
1364 depends on SYS_HAS_CPU_R10000
1365 select CPU_HAS_PREFETCH
1366 select CPU_SUPPORTS_32BIT_KERNEL
1367 select CPU_SUPPORTS_64BIT_KERNEL
1368 select CPU_SUPPORTS_HIGHMEM
1370 MIPS Technologies R10000-series processors.
1374 depends on SYS_HAS_CPU_RM7000
1375 select CPU_HAS_PREFETCH
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_64BIT_KERNEL
1378 select CPU_SUPPORTS_HIGHMEM
1382 depends on SYS_HAS_CPU_RM9000
1383 select CPU_HAS_PREFETCH
1384 select CPU_SUPPORTS_32BIT_KERNEL
1385 select CPU_SUPPORTS_64BIT_KERNEL
1386 select CPU_SUPPORTS_HIGHMEM
1387 select WEAK_ORDERING
1391 depends on SYS_HAS_CPU_SB1
1392 select CPU_SUPPORTS_32BIT_KERNEL
1393 select CPU_SUPPORTS_64BIT_KERNEL
1394 select CPU_SUPPORTS_HIGHMEM
1395 select WEAK_ORDERING
1397 config CPU_CAVIUM_OCTEON
1398 bool "Cavium Octeon processor"
1399 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1400 select CPU_HAS_PREFETCH
1401 select CPU_SUPPORTS_64BIT_KERNEL
1402 select SYS_SUPPORTS_SMP
1403 select NR_CPUS_DEFAULT_16
1404 select WEAK_ORDERING
1405 select CPU_SUPPORTS_HIGHMEM
1406 select CPU_SUPPORTS_HUGEPAGES
1408 The Cavium Octeon processor is a highly integrated chip containing
1409 many ethernet hardware widgets for networking tasks. The processor
1410 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1411 Full details can be found at http://www.caviumnetworks.com.
1413 config CPU_BMIPS3300
1415 depends on SYS_HAS_CPU_BMIPS3300
1416 select DMA_NONCOHERENT
1418 select SWAP_IO_SPACE
1419 select SYS_SUPPORTS_32BIT_KERNEL
1420 select WEAK_ORDERING
1422 Broadcom BMIPS3300 processors.
1424 config CPU_BMIPS4350
1426 depends on SYS_HAS_CPU_BMIPS4350
1427 select CPU_SUPPORTS_32BIT_KERNEL
1428 select DMA_NONCOHERENT
1430 select SWAP_IO_SPACE
1431 select SYS_SUPPORTS_SMP
1432 select SYS_SUPPORTS_HOTPLUG_CPU
1433 select WEAK_ORDERING
1435 Broadcom BMIPS4350 ("VIPER") processors.
1437 config CPU_BMIPS4380
1439 depends on SYS_HAS_CPU_BMIPS4380
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select DMA_NONCOHERENT
1443 select SWAP_IO_SPACE
1444 select SYS_SUPPORTS_SMP
1445 select SYS_SUPPORTS_HOTPLUG_CPU
1446 select WEAK_ORDERING
1448 Broadcom BMIPS4380 processors.
1450 config CPU_BMIPS5000
1452 depends on SYS_HAS_CPU_BMIPS5000
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_HIGHMEM
1455 select DMA_NONCOHERENT
1457 select SWAP_IO_SPACE
1458 select SYS_SUPPORTS_SMP
1459 select SYS_SUPPORTS_HOTPLUG_CPU
1460 select WEAK_ORDERING
1462 Broadcom BMIPS5000 processors.
1465 bool "Netlogic XLR SoC"
1466 depends on SYS_HAS_CPU_XLR
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select WEAK_ORDERING
1471 select WEAK_REORDERING_BEYOND_LLSC
1472 select CPU_SUPPORTS_HUGEPAGES
1474 Netlogic Microsystems XLR/XLS processors.
1478 config CPU_NOP_WORKAROUNDS
1481 config CPU_JUMP_WORKAROUNDS
1484 config CPU_LOONGSON2F_WORKAROUNDS
1485 bool "Loongson 2F Workarounds"
1487 select CPU_NOP_WORKAROUNDS
1488 select CPU_JUMP_WORKAROUNDS
1490 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1491 require workarounds. Without workarounds the system may hang
1492 unexpectedly. For more information please refer to the gas
1493 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1495 Loongson 2F03 and later have fixed these issues and no workarounds
1496 are needed. The workarounds have no significant side effect on them
1497 but may decrease the performance of the system so this option should
1498 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1501 If unsure, please say Y.
1502 endif # CPU_LOONGSON2F
1504 config SYS_SUPPORTS_ZBOOT
1506 select HAVE_KERNEL_GZIP
1507 select HAVE_KERNEL_BZIP2
1508 select HAVE_KERNEL_LZMA
1509 select HAVE_KERNEL_LZO
1511 config SYS_SUPPORTS_ZBOOT_UART16550
1513 select SYS_SUPPORTS_ZBOOT
1515 config CPU_LOONGSON2
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1521 config SYS_HAS_CPU_LOONGSON2E
1524 config SYS_HAS_CPU_LOONGSON2F
1526 select CPU_SUPPORTS_CPUFREQ
1527 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1528 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1530 config SYS_HAS_CPU_MIPS32_R1
1533 config SYS_HAS_CPU_MIPS32_R2
1536 config SYS_HAS_CPU_MIPS64_R1
1539 config SYS_HAS_CPU_MIPS64_R2
1542 config SYS_HAS_CPU_R3000
1545 config SYS_HAS_CPU_TX39XX
1548 config SYS_HAS_CPU_VR41XX
1551 config SYS_HAS_CPU_R4300
1554 config SYS_HAS_CPU_R4X00
1557 config SYS_HAS_CPU_TX49XX
1560 config SYS_HAS_CPU_R5000
1563 config SYS_HAS_CPU_R5432
1566 config SYS_HAS_CPU_R5500
1569 config SYS_HAS_CPU_R6000
1572 config SYS_HAS_CPU_NEVADA
1575 config SYS_HAS_CPU_R8000
1578 config SYS_HAS_CPU_R10000
1581 config SYS_HAS_CPU_RM7000
1584 config SYS_HAS_CPU_RM9000
1587 config SYS_HAS_CPU_SB1
1590 config SYS_HAS_CPU_CAVIUM_OCTEON
1593 config SYS_HAS_CPU_BMIPS3300
1596 config SYS_HAS_CPU_BMIPS4350
1599 config SYS_HAS_CPU_BMIPS4380
1602 config SYS_HAS_CPU_BMIPS5000
1605 config SYS_HAS_CPU_XLR
1609 # CPU may reorder R->R, R->W, W->R, W->W
1610 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1612 config WEAK_ORDERING
1616 # CPU may reorder reads and writes beyond LL/SC
1617 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1619 config WEAK_REORDERING_BEYOND_LLSC
1624 # These two indicate any level of the MIPS32 and MIPS64 architecture
1628 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1632 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1635 # These two indicate the revision of the architecture, either Release 1 or Release 2
1639 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1643 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1645 config SYS_SUPPORTS_32BIT_KERNEL
1647 config SYS_SUPPORTS_64BIT_KERNEL
1649 config CPU_SUPPORTS_32BIT_KERNEL
1651 config CPU_SUPPORTS_64BIT_KERNEL
1653 config CPU_SUPPORTS_CPUFREQ
1655 config CPU_SUPPORTS_ADDRWINCFG
1657 config CPU_SUPPORTS_HUGEPAGES
1659 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1661 config MIPS_PGD_C0_CONTEXT
1663 default y if 64BIT && CPU_MIPSR2
1666 # Set to y for ptrace access to watch registers.
1668 config HARDWARE_WATCHPOINTS
1670 default y if CPU_MIPSR1 || CPU_MIPSR2
1676 prompt "Kernel code model"
1678 You should only select this option if you have a workload that
1679 actually benefits from 64-bit processing or if your machine has
1680 large memory. You will only be presented a single option in this
1681 menu if your system does not support both 32-bit and 64-bit kernels.
1684 bool "32-bit kernel"
1685 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1688 Select this option if you want to build a 32-bit kernel.
1690 bool "64-bit kernel"
1691 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1692 select HAVE_SYSCALL_WRAPPERS
1694 Select this option if you want to build a 64-bit kernel.
1699 prompt "Kernel page size"
1700 default PAGE_SIZE_4KB
1702 config PAGE_SIZE_4KB
1704 depends on !CPU_LOONGSON2
1706 This option select the standard 4kB Linux page size. On some
1707 R3000-family processors this is the only available page size. Using
1708 4kB page size will minimize memory consumption and is therefore
1709 recommended for low memory systems.
1711 config PAGE_SIZE_8KB
1713 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1715 Using 8kB page size will result in higher performance kernel at
1716 the price of higher memory consumption. This option is available
1717 only on R8000 and cnMIPS processors. Note that you will need a
1718 suitable Linux distribution to support this.
1720 config PAGE_SIZE_16KB
1722 depends on !CPU_R3000 && !CPU_TX39XX
1724 Using 16kB page size will result in higher performance kernel at
1725 the price of higher memory consumption. This option is available on
1726 all non-R3000 family processors. Note that you will need a suitable
1727 Linux distribution to support this.
1729 config PAGE_SIZE_32KB
1731 depends on CPU_CAVIUM_OCTEON
1733 Using 32kB page size will result in higher performance kernel at
1734 the price of higher memory consumption. This option is available
1735 only on cnMIPS cores. Note that you will need a suitable Linux
1736 distribution to support this.
1738 config PAGE_SIZE_64KB
1740 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1742 Using 64kB page size will result in higher performance kernel at
1743 the price of higher memory consumption. This option is available on
1744 all non-R3000 family processor. Not that at the time of this
1745 writing this option is still high experimental.
1749 config FORCE_MAX_ZONEORDER
1750 int "Maximum zone order"
1751 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1752 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1753 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1754 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1758 The kernel memory allocator divides physically contiguous memory
1759 blocks into "zones", where each zone is a power of two number of
1760 pages. This option selects the largest power of two that the kernel
1761 keeps in the memory allocator. If you need to allocate very large
1762 blocks of physically contiguous memory, then you may need to
1763 increase this value.
1765 This config option is actually maximum order plus one. For example,
1766 a value of 11 means that the largest free memory block is 2^10 pages.
1768 The page size is not necessarily 4KB. Keep this in mind
1769 when choosing a value for this option.
1774 config IP22_CPU_SCACHE
1779 # Support for a MIPS32 / MIPS64 style S-caches
1781 config MIPS_CPU_SCACHE
1785 config R5000_CPU_SCACHE
1789 config RM7000_CPU_SCACHE
1793 config SIBYTE_DMA_PAGEOPS
1794 bool "Use DMA to clear/copy pages"
1797 Instead of using the CPU to zero and copy pages, use a Data Mover
1798 channel. These DMA channels are otherwise unused by the standard
1799 SiByte Linux port. Seems to give a small performance benefit.
1801 config CPU_HAS_PREFETCH
1805 prompt "MIPS MT options"
1807 config MIPS_MT_DISABLED
1808 bool "Disable multithreading support."
1810 Use this option if your workload can't take advantage of
1811 MIPS hardware multithreading support. On systems that don't have
1812 the option of an MT-enabled processor this option will be the only
1813 option in this menu.
1816 bool "Use 1 TC on each available VPE for SMP"
1817 depends on SYS_SUPPORTS_MULTITHREADING
1818 select CPU_MIPSR2_IRQ_VI
1819 select CPU_MIPSR2_IRQ_EI
1821 select NR_CPUS_DEFAULT_2
1823 select SYS_SUPPORTS_SCHED_SMT if SMP
1824 select SYS_SUPPORTS_SMP
1827 This is a kernel model which is known a VSMP but lately has been
1828 marketesed into SMVP.
1829 Virtual SMP uses the processor's VPEs to implement virtual
1830 processors. In currently available configuration of the 34K processor
1831 this allows for a dual processor. Both processors will share the same
1832 primary caches; each will obtain the half of the TLB for it's own
1833 exclusive use. For a layman this model can be described as similar to
1834 what Intel calls Hyperthreading.
1836 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1839 bool "SMTC: Use all TCs on all VPEs for SMP"
1840 depends on CPU_MIPS32_R2
1841 #depends on CPU_MIPS64_R2 # once there is hardware ...
1842 depends on SYS_SUPPORTS_MULTITHREADING
1843 select CPU_MIPSR2_IRQ_VI
1844 select CPU_MIPSR2_IRQ_EI
1846 select NR_CPUS_DEFAULT_8
1848 select SYS_SUPPORTS_SMP
1851 This is a kernel model which is known a SMTC or lately has been
1852 marketesed into SMVP.
1853 is presenting the available TC's of the core as processors to Linux.
1854 On currently available 34K processors this means a Linux system will
1855 see up to 5 processors. The implementation of the SMTC kernel differs
1856 significantly from VSMP and cannot efficiently coexist in the same
1857 kernel binary so the choice between VSMP and SMTC is a compile time
1860 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1868 bool "SMT (multithreading) scheduler support"
1869 depends on SYS_SUPPORTS_SCHED_SMT
1872 SMT scheduler support improves the CPU scheduler's decision making
1873 when dealing with MIPS MT enabled cores at a cost of slightly
1874 increased overhead in some places. If unsure say N here.
1876 config SYS_SUPPORTS_SCHED_SMT
1880 config SYS_SUPPORTS_MULTITHREADING
1883 config MIPS_MT_FPAFF
1884 bool "Dynamic FPU affinity for FP-intensive threads"
1886 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1888 config MIPS_VPE_LOADER
1889 bool "VPE loader support."
1890 depends on SYS_SUPPORTS_MULTITHREADING
1891 select CPU_MIPSR2_IRQ_VI
1892 select CPU_MIPSR2_IRQ_EI
1895 Includes a loader for loading an elf relocatable object
1896 onto another VPE and running it.
1898 config MIPS_MT_SMTC_IM_BACKSTOP
1899 bool "Use per-TC register bits as backstop for inhibited IM bits"
1900 depends on MIPS_MT_SMTC
1903 To support multiple TC microthreads acting as "CPUs" within
1904 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1905 during interrupt handling. To support legacy drivers and interrupt
1906 controller management code, SMTC has a "backstop" to track and
1907 if necessary restore the interrupt mask. This has some performance
1908 impact on interrupt service overhead.
1910 config MIPS_MT_SMTC_IRQAFF
1911 bool "Support IRQ affinity API"
1912 depends on MIPS_MT_SMTC
1915 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1916 for SMTC Linux kernel. Requires platform support, of which
1917 an example can be found in the MIPS kernel i8259 and Malta
1918 platform code. Adds some overhead to interrupt dispatch, and
1919 should be used only if you know what you are doing.
1921 config MIPS_VPE_LOADER_TOM
1922 bool "Load VPE program into memory hidden from linux"
1923 depends on MIPS_VPE_LOADER
1926 The loader can use memory that is present but has been hidden from
1927 Linux using the kernel command line option "mem=xxMB". It's up to
1928 you to ensure the amount you put in the option and the space your
1929 program requires is less or equal to the amount physically present.
1931 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1932 config MIPS_VPE_APSP_API
1933 bool "Enable support for AP/SP API (RTLX)"
1934 depends on MIPS_VPE_LOADER
1937 config MIPS_APSP_KSPD
1939 depends on MIPS_VPE_APSP_API
1942 KSPD is a kernel daemon that accepts syscall requests from the SP
1943 side, actions them and returns the results. It also handles the
1944 "exit" syscall notifying other kernel modules the SP program is
1945 exiting. You probably want to say yes here.
1948 bool "MIPS CMP framework support"
1949 depends on SYS_SUPPORTS_MIPS_CMP
1951 select SYS_SUPPORTS_SMP
1952 select SYS_SUPPORTS_SCHED_SMT if SMP
1953 select WEAK_ORDERING
1956 This is a placeholder option for the GCMP work. It will need to
1957 be handled differently...
1959 config SB1_PASS_1_WORKAROUNDS
1961 depends on CPU_SB1_PASS_1
1964 config SB1_PASS_2_WORKAROUNDS
1966 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1969 config SB1_PASS_2_1_WORKAROUNDS
1971 depends on CPU_SB1 && CPU_SB1_PASS_2
1974 config 64BIT_PHYS_ADDR
1977 config ARCH_PHYS_ADDR_T_64BIT
1978 def_bool 64BIT_PHYS_ADDR
1980 config CPU_HAS_SMARTMIPS
1981 depends on SYS_SUPPORTS_SMARTMIPS
1982 bool "Support for the SmartMIPS ASE"
1984 SmartMIPS is a extension of the MIPS32 architecture aimed at
1985 increased security at both hardware and software level for
1986 smartcards. Enabling this option will allow proper use of the
1987 SmartMIPS instructions by Linux applications. However a kernel with
1988 this option will not work on a MIPS core without SmartMIPS core. If
1989 you don't know you probably don't have SmartMIPS and should say N
1996 # Vectored interrupt mode is an R2 feature
1998 config CPU_MIPSR2_IRQ_VI
2002 # Extended interrupt mode is an R2 feature
2004 config CPU_MIPSR2_IRQ_EI
2009 depends on !CPU_R3000
2012 config GENERIC_CLOCKEVENTS_BROADCAST
2018 config CPU_DADDI_WORKAROUNDS
2021 config CPU_R4000_WORKAROUNDS
2023 select CPU_R4400_WORKAROUNDS
2025 config CPU_R4400_WORKAROUNDS
2029 # - Highmem only makes sense for the 32-bit kernel.
2030 # - The current highmem code will only work properly on physically indexed
2031 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2032 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2033 # moment we protect the user and offer the highmem option only on machines
2034 # where it's known to be safe. This will not offer highmem on a few systems
2035 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2036 # indexed CPUs but we're playing safe.
2037 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2038 # know they might have memory configurations that could make use of highmem
2042 bool "High Memory Support"
2043 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2045 config CPU_SUPPORTS_HIGHMEM
2048 config SYS_SUPPORTS_HIGHMEM
2051 config SYS_SUPPORTS_SMARTMIPS
2054 config ARCH_FLATMEM_ENABLE
2056 depends on !NUMA && !CPU_LOONGSON2
2058 config ARCH_DISCONTIGMEM_ENABLE
2060 default y if SGI_IP27
2062 Say Y to support efficient handling of discontiguous physical memory,
2063 for architectures which are either NUMA (Non-Uniform Memory Access)
2064 or have huge holes in the physical address space for other reasons.
2065 See <file:Documentation/vm/numa> for more.
2067 config ARCH_POPULATES_NODE_MAP
2070 config ARCH_SPARSEMEM_ENABLE
2072 select SPARSEMEM_STATIC
2076 depends on SYS_SUPPORTS_NUMA
2078 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2079 Access). This option improves performance on systems with more
2080 than two nodes; on two node systems it is generally better to
2081 leave it disabled; on single node systems disable this option
2084 config SYS_SUPPORTS_NUMA
2090 depends on NEED_MULTIPLE_NODES
2092 config HW_PERF_EVENTS
2093 bool "Enable hardware performance counter support for perf events"
2094 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2097 Enable hardware performance counter support for perf events. If
2098 disabled, perf events will use software events only.
2103 bool "Multi-Processing support"
2104 depends on SYS_SUPPORTS_SMP
2106 select USE_GENERIC_SMP_HELPERS
2108 This enables support for systems with more than one CPU. If you have
2109 a system with only one CPU, like most personal computers, say N. If
2110 you have a system with more than one CPU, say Y.
2112 If you say N here, the kernel will run on single and multiprocessor
2113 machines, but will use only one CPU of a multiprocessor machine. If
2114 you say Y here, the kernel will run on many, but not all,
2115 singleprocessor machines. On a singleprocessor machine, the kernel
2116 will run faster if you say N here.
2118 People using multiprocessor machines who say Y here should also say
2119 Y to "Enhanced Real Time Clock Support", below.
2121 See also the SMP-HOWTO available at
2122 <http://www.tldp.org/docs.html#howto>.
2124 If you don't know what to do here, say N.
2129 config SYS_SUPPORTS_MIPS_CMP
2132 config SYS_SUPPORTS_SMP
2135 config NR_CPUS_DEFAULT_1
2138 config NR_CPUS_DEFAULT_2
2141 config NR_CPUS_DEFAULT_4
2144 config NR_CPUS_DEFAULT_8
2147 config NR_CPUS_DEFAULT_16
2150 config NR_CPUS_DEFAULT_32
2153 config NR_CPUS_DEFAULT_64
2157 int "Maximum number of CPUs (2-64)"
2158 range 1 64 if NR_CPUS_DEFAULT_1
2160 default "1" if NR_CPUS_DEFAULT_1
2161 default "2" if NR_CPUS_DEFAULT_2
2162 default "4" if NR_CPUS_DEFAULT_4
2163 default "8" if NR_CPUS_DEFAULT_8
2164 default "16" if NR_CPUS_DEFAULT_16
2165 default "32" if NR_CPUS_DEFAULT_32
2166 default "64" if NR_CPUS_DEFAULT_64
2168 This allows you to specify the maximum number of CPUs which this
2169 kernel will support. The maximum supported value is 32 for 32-bit
2170 kernel and 64 for 64-bit kernels; the minimum value which makes
2171 sense is 1 for Qemu (useful only for kernel debugging purposes)
2172 and 2 for all others.
2174 This is purely to save memory - each supported CPU adds
2175 approximately eight kilobytes to the kernel image. For best
2176 performance should round up your number of processors to the next
2179 source "kernel/time/Kconfig"
2182 # Timer Interrupt Frequency Configuration
2186 prompt "Timer frequency"
2189 Allows the configuration of the timer frequency.
2192 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2195 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2198 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2201 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2204 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2207 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2210 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2214 config SYS_SUPPORTS_48HZ
2217 config SYS_SUPPORTS_100HZ
2220 config SYS_SUPPORTS_128HZ
2223 config SYS_SUPPORTS_250HZ
2226 config SYS_SUPPORTS_256HZ
2229 config SYS_SUPPORTS_1000HZ
2232 config SYS_SUPPORTS_1024HZ
2235 config SYS_SUPPORTS_ARBIT_HZ
2237 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2238 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2239 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2240 !SYS_SUPPORTS_1024HZ
2245 default 100 if HZ_100
2246 default 128 if HZ_128
2247 default 250 if HZ_250
2248 default 256 if HZ_256
2249 default 1000 if HZ_1000
2250 default 1024 if HZ_1024
2252 source "kernel/Kconfig.preempt"
2255 bool "Kexec system call (EXPERIMENTAL)"
2256 depends on EXPERIMENTAL
2258 kexec is a system call that implements the ability to shutdown your
2259 current kernel, and to start another kernel. It is like a reboot
2260 but it is independent of the system firmware. And like a reboot
2261 you can start any kernel with it, not just Linux.
2263 The name comes from the similarity to the exec system call.
2265 It is an ongoing process to be certain the hardware in a machine
2266 is properly shutdown, so do not be surprised if this code does not
2267 initially work for you. It may help to enable device hotplugging
2268 support. As of this writing the exact hardware interface is
2269 strongly in flux, so no good recommendation can be made.
2272 bool "Enable seccomp to safely compute untrusted bytecode"
2276 This kernel feature is useful for number crunching applications
2277 that may need to compute untrusted bytecode during their
2278 execution. By using pipes or other transports made available to
2279 the process as file descriptors supporting the read/write
2280 syscalls, it's possible to isolate those applications in
2281 their own address space using seccomp. Once seccomp is
2282 enabled via /proc/<pid>/seccomp, it cannot be disabled
2283 and the task is only allowed to execute a few safe syscalls
2284 defined by each seccomp mode.
2286 If unsure, say Y. Only embedded should say N here.
2289 bool "Flattened Device Tree support"
2291 select OF_EARLY_FLATTREE
2293 Include support for flattened device tree machine descriptions.
2297 config LOCKDEP_SUPPORT
2301 config STACKTRACE_SUPPORT
2305 source "init/Kconfig"
2307 source "kernel/Kconfig.freezer"
2309 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2317 bool "Support for PCI controller"
2318 depends on HW_HAS_PCI
2321 Find out whether you have a PCI motherboard. PCI is the name of a
2322 bus system, i.e. the way the CPU talks to the other stuff inside
2323 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2329 source "drivers/pci/Kconfig"
2332 # ISA support is now enabled via select. Too many systems still have the one
2333 # or other ISA chip on the board that users don't know about so don't expect
2334 # users to choose the right thing ...
2341 depends on HW_HAS_EISA
2343 select GENERIC_ISA_DMA
2345 The Extended Industry Standard Architecture (EISA) bus was
2346 developed as an open alternative to the IBM MicroChannel bus.
2348 The EISA bus provided some of the features of the IBM MicroChannel
2349 bus while maintaining backward compatibility with cards made for
2350 the older ISA bus. The EISA bus saw limited use between 1988 and
2351 1995 when it was made obsolete by the PCI bus.
2353 Say Y here if you are building a kernel for an EISA-based machine.
2357 source "drivers/eisa/Kconfig"
2360 bool "TURBOchannel support"
2361 depends on MACH_DECSTATION
2363 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2364 processors. TURBOchannel programming specifications are available
2366 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2368 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2369 Linux driver support status is documented at:
2370 <http://www.linux-mips.org/wiki/DECstation>
2373 # bool "Access.Bus support"
2384 select MIPS_EXTERNAL_TIMER
2389 source "drivers/pcmcia/Kconfig"
2391 source "drivers/pci/hotplug/Kconfig"
2394 bool "RapidIO support"
2398 If you say Y here, the kernel will include drivers and
2399 infrastructure code to support RapidIO interconnect devices.
2401 source "drivers/rapidio/Kconfig"
2405 menu "Executable file formats"
2407 source "fs/Kconfig.binfmt"
2412 config MIPS32_COMPAT
2413 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2416 Select this option if you want Linux/MIPS 32-bit binary
2417 compatibility. Since all software available for Linux/MIPS is
2418 currently 32-bit you should say Y here.
2422 depends on MIPS32_COMPAT
2425 config SYSVIPC_COMPAT
2427 depends on COMPAT && SYSVIPC
2431 bool "Kernel support for o32 binaries"
2432 depends on MIPS32_COMPAT
2434 Select this option if you want to run o32 binaries. These are pure
2435 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2436 existing binaries are in this format.
2441 bool "Kernel support for n32 binaries"
2442 depends on MIPS32_COMPAT
2444 Select this option if you want to run n32 binaries. These are
2445 64-bit binaries using 32-bit quantities for addressing and certain
2446 data that would normally be 64-bit. They are used in special
2453 default y if MIPS32_O32 || MIPS32_N32
2457 menu "Power management options"
2459 config ARCH_HIBERNATION_POSSIBLE
2461 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2463 config ARCH_SUSPEND_POSSIBLE
2465 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2467 source "kernel/power/Kconfig"
2471 source "arch/mips/kernel/cpufreq/Kconfig"
2473 source "net/Kconfig"
2475 source "drivers/Kconfig"
2479 source "arch/mips/Kconfig.debug"
2481 source "security/Kconfig"
2483 source "crypto/Kconfig"
2485 source "lib/Kconfig"