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 HAVE_ARCH_JUMP_LABEL
27 menu "Machine selection"
37 bool "Alchemy processor based machines"
38 select 64BIT_PHYS_ADDR
42 select SYS_HAS_CPU_MIPS32_R1
43 select SYS_SUPPORTS_32BIT_KERNEL
44 select SYS_SUPPORTS_APM_EMULATION
46 select ARCH_WANT_OPTIONAL_GPIOLIB
47 select SYS_SUPPORTS_ZBOOT
50 bool "Texas Instruments AR7"
52 select DMA_NONCOHERENT
58 select SYS_HAS_CPU_MIPS32_R1
59 select SYS_HAS_EARLY_PRINTK
60 select SYS_SUPPORTS_32BIT_KERNEL
61 select SYS_SUPPORTS_LITTLE_ENDIAN
62 select SYS_SUPPORTS_ZBOOT_UART16550
63 select ARCH_REQUIRE_GPIOLIB
67 Support for the Texas Instruments AR7 System-on-a-Chip
68 family: TNETD7100, 7200 and 7300.
71 bool "Atheros AR71XX/AR724X/AR913X based boards"
72 select ARCH_REQUIRE_GPIOLIB
76 select DMA_NONCOHERENT
79 select SYS_HAS_CPU_MIPS32_R2
80 select SYS_HAS_EARLY_PRINTK
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_BIG_ENDIAN
84 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
87 bool "Broadcom BCM47XX based boards"
90 select DMA_NONCOHERENT
93 select SYS_HAS_CPU_MIPS32_R1
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
97 select SSB_DRIVER_MIPS
98 select SSB_DRIVER_EXTIF
100 select SSB_B43_PCI_BRIDGE if PCI
101 select SSB_PCICORE_HOSTMODE if PCI
103 select SYS_HAS_EARLY_PRINTK
106 Support for BCM47XX based boards
109 bool "Broadcom BCM63XX based boards"
112 select DMA_NONCOHERENT
114 select SYS_HAS_CPU_MIPS32_R1
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_HAS_EARLY_PRINTK
119 select ARCH_REQUIRE_GPIOLIB
121 Support for BCM63XX based boards
128 select DMA_NONCOHERENT
134 select PCI_GT64XXX_PCI0
136 select SYS_HAS_CPU_NEVADA
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_64BIT_KERNEL
140 select SYS_SUPPORTS_LITTLE_ENDIAN
142 config MACH_DECSTATION
149 select CPU_DADDI_WORKAROUNDS if 64BIT
150 select CPU_R4000_WORKAROUNDS if 64BIT
151 select CPU_R4400_WORKAROUNDS if 64BIT
152 select DMA_NONCOHERENT
155 select SYS_HAS_CPU_R3000
156 select SYS_HAS_CPU_R4X00
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_128HZ
161 select SYS_SUPPORTS_256HZ
162 select SYS_SUPPORTS_1024HZ
164 This enables support for DEC's MIPS based workstations. For details
165 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
166 DECstation porting pages on <http://decstation.unix-ag.org/>.
168 If you have one of the following DECstation Models you definitely
169 want to choose R4xx0 for the CPU Type:
176 otherwise choose R3000.
179 bool "Jazz family of machines"
182 select ARCH_MAY_HAVE_PC_FDC
185 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
186 select GENERIC_ISA_DMA
191 select SYS_HAS_CPU_R4X00
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
194 select SYS_SUPPORTS_100HZ
196 This a family of machines based on the MIPS R4030 chipset which was
197 used by several vendors to build RISC/os and Windows NT workstations.
198 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
199 Olivetti M700-10 workstations.
202 bool "Ingenic JZ4740 based machines"
203 select SYS_HAS_CPU_MIPS32_R1
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_LITTLE_ENDIAN
206 select DMA_NONCOHERENT
209 select ARCH_REQUIRE_GPIOLIB
210 select SYS_HAS_EARLY_PRINTK
215 bool "LASAT Networks platforms"
218 select DMA_NONCOHERENT
219 select SYS_HAS_EARLY_PRINTK
222 select PCI_GT64XXX_PCI0
224 select R5000_CPU_SCACHE
225 select SYS_HAS_CPU_R5000
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
228 select SYS_SUPPORTS_LITTLE_ENDIAN
231 bool "Loongson family of machines"
232 select SYS_SUPPORTS_ZBOOT
234 This enables the support of Loongson family of machines.
236 Loongson is a family of general-purpose MIPS-compatible CPUs.
237 developed at Institute of Computing Technology (ICT),
238 Chinese Academy of Sciences (CAS) in the People's Republic
239 of China. The chief architect is Professor Weiwu Hu.
242 bool "MIPS Malta board"
243 select ARCH_MAY_HAVE_PC_FDC
248 select DMA_NONCOHERENT
249 select GENERIC_ISA_DMA
255 select MIPS_BOARDS_GEN
257 select MIPS_CPU_SCACHE
258 select PCI_GT64XXX_PCI0
261 select SYS_HAS_CPU_MIPS32_R1
262 select SYS_HAS_CPU_MIPS32_R2
263 select SYS_HAS_CPU_MIPS64_R1
264 select SYS_HAS_CPU_NEVADA
265 select SYS_HAS_CPU_RM7000
266 select SYS_HAS_EARLY_PRINTK
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_64BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_SUPPORTS_LITTLE_ENDIAN
271 select SYS_SUPPORTS_MIPS_CMP
272 select SYS_SUPPORTS_MULTITHREADING
273 select SYS_SUPPORTS_SMARTMIPS
274 select SYS_SUPPORTS_ZBOOT
276 This enables support for the MIPS Technologies Malta evaluation
280 bool 'MIPS simulator (MIPSsim)'
283 select DMA_NONCOHERENT
284 select SYS_HAS_EARLY_PRINTK
287 select SYS_HAS_CPU_MIPS32_R1
288 select SYS_HAS_CPU_MIPS32_R2
289 select SYS_HAS_EARLY_PRINTK
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_SUPPORTS_MULTITHREADING
293 select SYS_SUPPORTS_LITTLE_ENDIAN
295 This option enables support for MIPS Technologies MIPSsim software
299 bool "NEC EMMA2RH Mark-eins board"
303 This enables support for the NEC Electronics Mark-eins boards.
306 bool "NEC VR4100 series based machines"
309 select SYS_HAS_CPU_VR41XX
310 select ARCH_REQUIRE_GPIOLIB
313 bool "NXP STB220 board"
316 Support for NXP Semiconductors STB220 Development Board.
323 Support for NXP Semiconductors STB225 Development Board.
326 bool "NXP PNX8550 based JBS board"
328 select SYS_SUPPORTS_LITTLE_ENDIAN
330 config PNX8550_STB810
331 bool "NXP PNX8550 based STB810 board"
333 select SYS_SUPPORTS_LITTLE_ENDIAN
336 bool "PMC-Sierra MSP chipsets"
337 depends on EXPERIMENTAL
340 select DMA_NONCOHERENT
342 select NO_EXCEPT_FILL
344 select SYS_HAS_CPU_MIPS32_R1
345 select SYS_HAS_CPU_MIPS32_R2
346 select SYS_SUPPORTS_32BIT_KERNEL
347 select SYS_SUPPORTS_BIG_ENDIAN
350 select SERIAL_8250_CONSOLE
352 This adds support for the PMC-Sierra family of Multi-Service
353 Processor System-On-A-Chips. These parts include a number
354 of integrated peripherals, interfaces and DSPs in addition to
355 a variety of MIPS cores.
358 bool "PMC-Sierra Yosemite eval board"
367 select SYS_HAS_CPU_RM9000
368 select SYS_HAS_EARLY_PRINTK
369 select SYS_SUPPORTS_32BIT_KERNEL
370 select SYS_SUPPORTS_64BIT_KERNEL
371 select SYS_SUPPORTS_BIG_ENDIAN
372 select SYS_SUPPORTS_HIGHMEM
373 select SYS_SUPPORTS_SMP
375 Yosemite is an evaluation board for the RM9000x2 processor
376 manufactured by PMC-Sierra.
382 select CPU_MIPSR2_IRQ_VI
383 select CPU_MIPSR2_IRQ_EI
385 select DMA_NONCOHERENT
387 select SYS_HAS_EARLY_PRINTK
388 select SYS_HAS_CPU_MIPS32_R2
389 select SYS_SUPPORTS_32BIT_KERNEL
390 select SYS_SUPPORTS_BIG_ENDIAN
391 select SYS_SUPPORTS_HIGHMEM
392 select USB_OHCI_LITTLE_ENDIAN
394 This enables support for the Cisco PowerTV Platform.
397 bool "SGI IP22 (Indy/Indigo2)"
403 select DEFAULT_SGI_PARTITION
404 select DMA_NONCOHERENT
408 select IP22_CPU_SCACHE
410 select GENERIC_ISA_DMA_SUPPORT_BROKEN
412 select SGI_HAS_INDYDOG
418 select SYS_HAS_CPU_R4X00
419 select SYS_HAS_CPU_R5000
421 # Disable EARLY_PRINTK for now since it leads to overwritten prom
422 # memory during early boot on some machines.
424 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
425 # for a more details discussion
427 # select SYS_HAS_EARLY_PRINTK
428 select SYS_SUPPORTS_32BIT_KERNEL
429 select SYS_SUPPORTS_64BIT_KERNEL
430 select SYS_SUPPORTS_BIG_ENDIAN
432 This are the SGI Indy, Challenge S and Indigo2, as well as certain
433 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
434 that runs on these, say Y here.
437 bool "SGI IP27 (Origin200/2000)"
441 select DEFAULT_SGI_PARTITION
443 select SYS_HAS_EARLY_PRINTK
445 select NR_CPUS_DEFAULT_64
446 select SYS_HAS_CPU_R10000
447 select SYS_SUPPORTS_64BIT_KERNEL
448 select SYS_SUPPORTS_BIG_ENDIAN
449 select SYS_SUPPORTS_NUMA
450 select SYS_SUPPORTS_SMP
452 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
453 workstations. To compile a Linux kernel that runs on these, say Y
457 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
458 depends on EXPERIMENTAL
464 select DEFAULT_SGI_PARTITION
465 select DMA_NONCOHERENT
466 select GENERIC_ISA_DMA_SUPPORT_BROKEN
472 select SGI_HAS_INDYDOG
478 select SYS_HAS_CPU_R10000
480 # Disable EARLY_PRINTK for now since it leads to overwritten prom
481 # memory during early boot on some machines.
483 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
484 # for a more details discussion
486 # select SYS_HAS_EARLY_PRINTK
487 select SYS_SUPPORTS_64BIT_KERNEL
488 select SYS_SUPPORTS_BIG_ENDIAN
490 This is the SGI Indigo2 with R10000 processor. To compile a Linux
491 kernel that runs on these, say Y here.
500 select DMA_NONCOHERENT
503 select R5000_CPU_SCACHE
504 select RM7000_CPU_SCACHE
505 select SYS_HAS_CPU_R5000
506 select SYS_HAS_CPU_R10000 if BROKEN
507 select SYS_HAS_CPU_RM7000
508 select SYS_HAS_CPU_NEVADA
509 select SYS_SUPPORTS_64BIT_KERNEL
510 select SYS_SUPPORTS_BIG_ENDIAN
512 If you want this kernel to run on SGI O2 workstation, say Y here.
515 bool "Sibyte BCM91120C-CRhine"
516 depends on EXPERIMENTAL
519 select SIBYTE_BCM1120
521 select SYS_HAS_CPU_SB1
522 select SYS_SUPPORTS_BIG_ENDIAN
523 select SYS_SUPPORTS_LITTLE_ENDIAN
526 bool "Sibyte BCM91120x-Carmel"
527 depends on EXPERIMENTAL
530 select SIBYTE_BCM1120
532 select SYS_HAS_CPU_SB1
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_LITTLE_ENDIAN
537 bool "Sibyte BCM91125C-CRhone"
538 depends on EXPERIMENTAL
541 select SIBYTE_BCM1125
543 select SYS_HAS_CPU_SB1
544 select SYS_SUPPORTS_BIG_ENDIAN
545 select SYS_SUPPORTS_HIGHMEM
546 select SYS_SUPPORTS_LITTLE_ENDIAN
549 bool "Sibyte BCM91125E-Rhone"
550 depends on EXPERIMENTAL
553 select SIBYTE_BCM1125H
555 select SYS_HAS_CPU_SB1
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_LITTLE_ENDIAN
560 bool "Sibyte BCM91250A-SWARM"
563 select HAVE_PATA_PLATFORM
564 select NR_CPUS_DEFAULT_2
567 select SYS_HAS_CPU_SB1
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_HIGHMEM
570 select SYS_SUPPORTS_LITTLE_ENDIAN
571 select ZONE_DMA32 if 64BIT
573 config SIBYTE_LITTLESUR
574 bool "Sibyte BCM91250C2-LittleSur"
575 depends on EXPERIMENTAL
578 select HAVE_PATA_PLATFORM
579 select NR_CPUS_DEFAULT_2
582 select SYS_HAS_CPU_SB1
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_HIGHMEM
585 select SYS_SUPPORTS_LITTLE_ENDIAN
587 config SIBYTE_SENTOSA
588 bool "Sibyte BCM91250E-Sentosa"
589 depends on EXPERIMENTAL
592 select NR_CPUS_DEFAULT_2
595 select SYS_HAS_CPU_SB1
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_LITTLE_ENDIAN
600 bool "Sibyte BCM91480B-BigSur"
603 select NR_CPUS_DEFAULT_4
604 select SIBYTE_BCM1x80
606 select SYS_HAS_CPU_SB1
607 select SYS_SUPPORTS_BIG_ENDIAN
608 select SYS_SUPPORTS_HIGHMEM
609 select SYS_SUPPORTS_LITTLE_ENDIAN
610 select ZONE_DMA32 if 64BIT
613 bool "SNI RM200/300/400"
614 select ARC if CPU_LITTLE_ENDIAN
615 select ARC32 if CPU_LITTLE_ENDIAN
616 select SNIPROM if CPU_BIG_ENDIAN
617 select ARCH_MAY_HAVE_PC_FDC
621 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
622 select DMA_NONCOHERENT
623 select GENERIC_ISA_DMA
630 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
631 select SYS_HAS_CPU_R4X00
632 select SYS_HAS_CPU_R5000
633 select SYS_HAS_CPU_R10000
634 select R5000_CPU_SCACHE
635 select SYS_HAS_EARLY_PRINTK
636 select SYS_SUPPORTS_32BIT_KERNEL
637 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_HIGHMEM
640 select SYS_SUPPORTS_LITTLE_ENDIAN
642 The SNI RM200/300/400 are MIPS-based machines manufactured by
643 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
644 Technology and now in turn merged with Fujitsu. Say Y here to
645 support this machine type.
648 bool "Toshiba TX39 series based machines"
651 bool "Toshiba TX49 series based machines"
653 config MIKROTIK_RB532
654 bool "Mikrotik RB532 boards"
657 select DMA_NONCOHERENT
660 select SYS_HAS_CPU_MIPS32_R1
661 select SYS_SUPPORTS_32BIT_KERNEL
662 select SYS_SUPPORTS_LITTLE_ENDIAN
665 select ARCH_REQUIRE_GPIOLIB
667 Support the Mikrotik(tm) RouterBoard 532 series,
668 based on the IDT RC32434 SoC.
671 bool "Wind River PPMC board"
676 select DMA_NONCOHERENT
678 select PCI_GT64XXX_PCI0
680 select SYS_HAS_CPU_MIPS32_R1
681 select SYS_HAS_CPU_MIPS32_R2
682 select SYS_HAS_CPU_MIPS64_R1
683 select SYS_HAS_CPU_NEVADA
684 select SYS_HAS_CPU_RM7000
685 select SYS_SUPPORTS_32BIT_KERNEL
686 select SYS_SUPPORTS_64BIT_KERNEL
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select SYS_SUPPORTS_LITTLE_ENDIAN
690 This enables support for the Wind River MIPS32 4KC PPMC evaluation
691 board, which is based on GT64120 bridge chip.
693 config CAVIUM_OCTEON_SIMULATOR
694 bool "Cavium Networks Octeon Simulator"
696 select 64BIT_PHYS_ADDR
698 select SYS_SUPPORTS_64BIT_KERNEL
699 select SYS_SUPPORTS_BIG_ENDIAN
700 select SYS_SUPPORTS_HIGHMEM
701 select SYS_SUPPORTS_HOTPLUG_CPU
702 select SYS_HAS_CPU_CAVIUM_OCTEON
704 The Octeon simulator is software performance model of the Cavium
705 Octeon Processor. It supports simulating Octeon processors on x86
708 config CAVIUM_OCTEON_REFERENCE_BOARD
709 bool "Cavium Networks Octeon reference board"
711 select 64BIT_PHYS_ADDR
713 select SYS_SUPPORTS_64BIT_KERNEL
714 select SYS_SUPPORTS_BIG_ENDIAN
715 select SYS_SUPPORTS_HIGHMEM
716 select SYS_SUPPORTS_HOTPLUG_CPU
717 select SYS_HAS_EARLY_PRINTK
718 select SYS_HAS_CPU_CAVIUM_OCTEON
721 select ARCH_SUPPORTS_MSI
723 select USB_ARCH_HAS_OHCI
724 select USB_ARCH_HAS_EHCI
726 This option supports all of the Octeon reference boards from Cavium
727 Networks. It builds a kernel that dynamically determines the Octeon
728 CPU type and supports all known board reference implementations.
729 Some of the supported boards are:
736 Say Y here for most Octeon reference boards.
740 source "arch/mips/alchemy/Kconfig"
741 source "arch/mips/ath79/Kconfig"
742 source "arch/mips/bcm63xx/Kconfig"
743 source "arch/mips/jazz/Kconfig"
744 source "arch/mips/jz4740/Kconfig"
745 source "arch/mips/lasat/Kconfig"
746 source "arch/mips/pmc-sierra/Kconfig"
747 source "arch/mips/powertv/Kconfig"
748 source "arch/mips/sgi-ip27/Kconfig"
749 source "arch/mips/sibyte/Kconfig"
750 source "arch/mips/txx9/Kconfig"
751 source "arch/mips/vr41xx/Kconfig"
752 source "arch/mips/cavium-octeon/Kconfig"
753 source "arch/mips/loongson/Kconfig"
757 config RWSEM_GENERIC_SPINLOCK
761 config RWSEM_XCHGADD_ALGORITHM
764 config ARCH_HAS_ILOG2_U32
768 config ARCH_HAS_ILOG2_U64
772 config ARCH_SUPPORTS_OPROFILE
774 default y if !MIPS_MT_SMTC
776 config GENERIC_FIND_NEXT_BIT
780 config GENERIC_FIND_BIT_LE
784 config GENERIC_HWEIGHT
788 config GENERIC_CALIBRATE_DELAY
792 config GENERIC_CLOCKEVENTS
796 config GENERIC_CMOS_UPDATE
800 config SCHED_OMIT_FRAME_POINTER
805 # Select some configuration options automatically based on user selections.
810 config ARCH_MAY_HAVE_PC_FDC
859 select ARCH_REQUIRE_GPIOLIB
868 config DMA_NONCOHERENT
870 select NEED_DMA_MAP_STATE
872 config NEED_DMA_MAP_STATE
875 config SYS_HAS_EARLY_PRINTK
879 bool "Support for hot-pluggable CPUs"
880 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
882 Say Y here to allow turning CPUs off and on. CPUs can be
883 controlled through /sys/devices/system/cpu.
884 (Note: power management support will enable this option
885 automatically on SMP systems. )
886 Say N if you want to disable CPU hotplug.
888 config SYS_SUPPORTS_HOTPLUG_CPU
903 config MIPS_DISABLE_OBSOLETE_IDE
915 config GENERIC_ISA_DMA
917 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
920 config GENERIC_ISA_DMA_SUPPORT_BROKEN
922 select GENERIC_ISA_DMA
931 # Endianess selection. Sufficiently obscure so many users don't know what to
932 # answer,so we try hard to limit the available choices. Also the use of a
933 # choice statement should be more obvious to the user.
936 prompt "Endianess selection"
938 Some MIPS machines can be configured for either little or big endian
939 byte order. These modes require different kernels and a different
940 Linux distribution. In general there is one preferred byteorder for a
941 particular system but some systems are just as commonly used in the
942 one or the other endianness.
944 config CPU_BIG_ENDIAN
946 depends on SYS_SUPPORTS_BIG_ENDIAN
948 config CPU_LITTLE_ENDIAN
950 depends on SYS_SUPPORTS_LITTLE_ENDIAN
958 config SYS_SUPPORTS_APM_EMULATION
961 config SYS_SUPPORTS_BIG_ENDIAN
964 config SYS_SUPPORTS_LITTLE_ENDIAN
967 config SYS_SUPPORTS_HUGETLBFS
969 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
996 config IRQ_CPU_OCTEON
999 config MIPS_BOARDS_GEN
1002 config PCI_GT64XXX_PCI0
1005 config NO_EXCEPT_FILL
1010 select SERIAL_RM9000
1016 select DMA_NONCOHERENT
1018 select SWAP_IO_SPACE
1019 select SYS_HAS_CPU_R5500
1020 select SYS_SUPPORTS_32BIT_KERNEL
1021 select SYS_SUPPORTS_64BIT_KERNEL
1022 select SYS_SUPPORTS_BIG_ENDIAN
1029 select DMA_NONCOHERENT
1030 select SYS_HAS_CPU_MIPS32_R2
1031 select SYS_SUPPORTS_32BIT_KERNEL
1032 select SYS_SUPPORTS_LITTLE_ENDIAN
1033 select SYS_SUPPORTS_BIG_ENDIAN
1035 select CPU_MIPSR2_IRQ_VI
1047 select DMA_NONCOHERENT
1049 select SYS_HAS_CPU_MIPS32_R1
1050 select SYS_HAS_EARLY_PRINTK
1051 select SYS_SUPPORTS_32BIT_KERNEL
1054 config SWAP_IO_SPACE
1057 config SERIAL_RM9000
1060 config SGI_HAS_INDYDOG
1072 config SGI_HAS_ZILOG
1075 config SGI_HAS_I8042
1078 config DEFAULT_SGI_PARTITION
1090 config MIPS_L1_CACHE_SHIFT
1092 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1093 default "6" if MIPS_CPU_SCACHE
1094 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1097 config HAVE_STD_PC_SERIAL_PORT
1101 bool "ARC console support"
1102 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1106 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1111 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1120 menu "CPU selection"
1126 config CPU_LOONGSON2E
1128 depends on SYS_HAS_CPU_LOONGSON2E
1129 select CPU_LOONGSON2
1131 The Loongson 2E processor implements the MIPS III instruction set
1132 with many extensions.
1134 It has an internal FPGA northbridge, which is compatiable to
1137 config CPU_LOONGSON2F
1139 depends on SYS_HAS_CPU_LOONGSON2F
1140 select CPU_LOONGSON2
1142 select ARCH_REQUIRE_GPIOLIB
1144 The Loongson 2F processor implements the MIPS III instruction set
1145 with many extensions.
1147 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1148 have a similar programming interface with FPGA northbridge used in
1151 config CPU_MIPS32_R1
1152 bool "MIPS32 Release 1"
1153 depends on SYS_HAS_CPU_MIPS32_R1
1154 select CPU_HAS_PREFETCH
1155 select CPU_SUPPORTS_32BIT_KERNEL
1156 select CPU_SUPPORTS_HIGHMEM
1158 Choose this option to build a kernel for release 1 or later of the
1159 MIPS32 architecture. Most modern embedded systems with a 32-bit
1160 MIPS processor are based on a MIPS32 processor. If you know the
1161 specific type of processor in your system, choose those that one
1162 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1163 Release 2 of the MIPS32 architecture is available since several
1164 years so chances are you even have a MIPS32 Release 2 processor
1165 in which case you should choose CPU_MIPS32_R2 instead for better
1168 config CPU_MIPS32_R2
1169 bool "MIPS32 Release 2"
1170 depends on SYS_HAS_CPU_MIPS32_R2
1171 select CPU_HAS_PREFETCH
1172 select CPU_SUPPORTS_32BIT_KERNEL
1173 select CPU_SUPPORTS_HIGHMEM
1175 Choose this option to build a kernel for release 2 or later of the
1176 MIPS32 architecture. Most modern embedded systems with a 32-bit
1177 MIPS processor are based on a MIPS32 processor. If you know the
1178 specific type of processor in your system, choose those that one
1179 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1181 config CPU_MIPS64_R1
1182 bool "MIPS64 Release 1"
1183 depends on SYS_HAS_CPU_MIPS64_R1
1184 select CPU_HAS_PREFETCH
1185 select CPU_SUPPORTS_32BIT_KERNEL
1186 select CPU_SUPPORTS_64BIT_KERNEL
1187 select CPU_SUPPORTS_HIGHMEM
1188 select CPU_SUPPORTS_HUGEPAGES
1190 Choose this option to build a kernel for release 1 or later of the
1191 MIPS64 architecture. Many modern embedded systems with a 64-bit
1192 MIPS processor are based on a MIPS64 processor. If you know the
1193 specific type of processor in your system, choose those that one
1194 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1195 Release 2 of the MIPS64 architecture is available since several
1196 years so chances are you even have a MIPS64 Release 2 processor
1197 in which case you should choose CPU_MIPS64_R2 instead for better
1200 config CPU_MIPS64_R2
1201 bool "MIPS64 Release 2"
1202 depends on SYS_HAS_CPU_MIPS64_R2
1203 select CPU_HAS_PREFETCH
1204 select CPU_SUPPORTS_32BIT_KERNEL
1205 select CPU_SUPPORTS_64BIT_KERNEL
1206 select CPU_SUPPORTS_HIGHMEM
1207 select CPU_SUPPORTS_HUGEPAGES
1209 Choose this option to build a kernel for release 2 or later of the
1210 MIPS64 architecture. Many modern embedded systems with a 64-bit
1211 MIPS processor are based on a MIPS64 processor. If you know the
1212 specific type of processor in your system, choose those that one
1213 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1217 depends on SYS_HAS_CPU_R3000
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_HIGHMEM
1222 Please make sure to pick the right CPU type. Linux/MIPS is not
1223 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1224 *not* work on R4000 machines and vice versa. However, since most
1225 of the supported machines have an R4000 (or similar) CPU, R4x00
1226 might be a safe bet. If the resulting kernel does not work,
1227 try to recompile with R3000.
1231 depends on SYS_HAS_CPU_TX39XX
1232 select CPU_SUPPORTS_32BIT_KERNEL
1236 depends on SYS_HAS_CPU_VR41XX
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1240 The options selects support for the NEC VR4100 series of processors.
1241 Only choose this option if you have one of these processors as a
1242 kernel built with this option will not run on any other type of
1243 processor or vice versa.
1247 depends on SYS_HAS_CPU_R4300
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_64BIT_KERNEL
1251 MIPS Technologies R4300-series processors.
1255 depends on SYS_HAS_CPU_R4X00
1256 select CPU_SUPPORTS_32BIT_KERNEL
1257 select CPU_SUPPORTS_64BIT_KERNEL
1259 MIPS Technologies R4000-series processors other than 4300, including
1260 the R4000, R4400, R4600, and 4700.
1264 depends on SYS_HAS_CPU_TX49XX
1265 select CPU_HAS_PREFETCH
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1271 depends on SYS_HAS_CPU_R5000
1272 select CPU_SUPPORTS_32BIT_KERNEL
1273 select CPU_SUPPORTS_64BIT_KERNEL
1275 MIPS Technologies R5000-series processors other than the Nevada.
1279 depends on SYS_HAS_CPU_R5432
1280 select CPU_SUPPORTS_32BIT_KERNEL
1281 select CPU_SUPPORTS_64BIT_KERNEL
1285 depends on SYS_HAS_CPU_R5500
1286 select CPU_SUPPORTS_32BIT_KERNEL
1287 select CPU_SUPPORTS_64BIT_KERNEL
1288 select CPU_SUPPORTS_HUGEPAGES
1290 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1295 depends on EXPERIMENTAL
1296 depends on SYS_HAS_CPU_R6000
1297 select CPU_SUPPORTS_32BIT_KERNEL
1299 MIPS Technologies R6000 and R6000A series processors. Note these
1300 processors are extremely rare and the support for them is incomplete.
1304 depends on SYS_HAS_CPU_NEVADA
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_64BIT_KERNEL
1308 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1312 depends on EXPERIMENTAL
1313 depends on SYS_HAS_CPU_R8000
1314 select CPU_HAS_PREFETCH
1315 select CPU_SUPPORTS_64BIT_KERNEL
1317 MIPS Technologies R8000 processors. Note these processors are
1318 uncommon and the support for them is incomplete.
1322 depends on SYS_HAS_CPU_R10000
1323 select CPU_HAS_PREFETCH
1324 select CPU_SUPPORTS_32BIT_KERNEL
1325 select CPU_SUPPORTS_64BIT_KERNEL
1326 select CPU_SUPPORTS_HIGHMEM
1328 MIPS Technologies R10000-series processors.
1332 depends on SYS_HAS_CPU_RM7000
1333 select CPU_HAS_PREFETCH
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1336 select CPU_SUPPORTS_HIGHMEM
1340 depends on SYS_HAS_CPU_RM9000
1341 select CPU_HAS_PREFETCH
1342 select CPU_SUPPORTS_32BIT_KERNEL
1343 select CPU_SUPPORTS_64BIT_KERNEL
1344 select CPU_SUPPORTS_HIGHMEM
1345 select WEAK_ORDERING
1349 depends on SYS_HAS_CPU_SB1
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_64BIT_KERNEL
1352 select CPU_SUPPORTS_HIGHMEM
1353 select WEAK_ORDERING
1355 config CPU_CAVIUM_OCTEON
1356 bool "Cavium Octeon processor"
1357 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1359 select IRQ_CPU_OCTEON
1360 select CPU_HAS_PREFETCH
1361 select CPU_SUPPORTS_64BIT_KERNEL
1362 select SYS_SUPPORTS_SMP
1363 select NR_CPUS_DEFAULT_16
1364 select WEAK_ORDERING
1365 select CPU_SUPPORTS_HIGHMEM
1366 select CPU_SUPPORTS_HUGEPAGES
1368 The Cavium Octeon processor is a highly integrated chip containing
1369 many ethernet hardware widgets for networking tasks. The processor
1370 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1371 Full details can be found at http://www.caviumnetworks.com.
1373 config CPU_BMIPS3300
1375 depends on SYS_HAS_CPU_BMIPS3300
1376 select DMA_NONCOHERENT
1378 select SWAP_IO_SPACE
1379 select SYS_SUPPORTS_32BIT_KERNEL
1380 select WEAK_ORDERING
1382 Broadcom BMIPS3300 processors.
1384 config CPU_BMIPS4350
1386 depends on SYS_HAS_CPU_BMIPS4350
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select DMA_NONCOHERENT
1390 select SWAP_IO_SPACE
1391 select SYS_SUPPORTS_SMP
1392 select SYS_SUPPORTS_HOTPLUG_CPU
1393 select WEAK_ORDERING
1395 Broadcom BMIPS4350 ("VIPER") processors.
1397 config CPU_BMIPS4380
1399 depends on SYS_HAS_CPU_BMIPS4380
1400 select CPU_SUPPORTS_32BIT_KERNEL
1401 select DMA_NONCOHERENT
1403 select SWAP_IO_SPACE
1404 select SYS_SUPPORTS_SMP
1405 select SYS_SUPPORTS_HOTPLUG_CPU
1406 select WEAK_ORDERING
1408 Broadcom BMIPS4380 processors.
1410 config CPU_BMIPS5000
1412 depends on SYS_HAS_CPU_BMIPS5000
1413 select CPU_SUPPORTS_32BIT_KERNEL
1414 select CPU_SUPPORTS_HIGHMEM
1415 select DMA_NONCOHERENT
1417 select SWAP_IO_SPACE
1418 select SYS_SUPPORTS_SMP
1419 select SYS_SUPPORTS_HOTPLUG_CPU
1420 select WEAK_ORDERING
1422 Broadcom BMIPS5000 processors.
1427 config CPU_NOP_WORKAROUNDS
1430 config CPU_JUMP_WORKAROUNDS
1433 config CPU_LOONGSON2F_WORKAROUNDS
1434 bool "Loongson 2F Workarounds"
1436 select CPU_NOP_WORKAROUNDS
1437 select CPU_JUMP_WORKAROUNDS
1439 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1440 require workarounds. Without workarounds the system may hang
1441 unexpectedly. For more information please refer to the gas
1442 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1444 Loongson 2F03 and later have fixed these issues and no workarounds
1445 are needed. The workarounds have no significant side effect on them
1446 but may decrease the performance of the system so this option should
1447 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1450 If unsure, please say Y.
1451 endif # CPU_LOONGSON2F
1453 config SYS_SUPPORTS_ZBOOT
1455 select HAVE_KERNEL_GZIP
1456 select HAVE_KERNEL_BZIP2
1457 select HAVE_KERNEL_LZMA
1458 select HAVE_KERNEL_LZO
1460 config SYS_SUPPORTS_ZBOOT_UART16550
1462 select SYS_SUPPORTS_ZBOOT
1464 config CPU_LOONGSON2
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1470 config SYS_HAS_CPU_LOONGSON2E
1473 config SYS_HAS_CPU_LOONGSON2F
1475 select CPU_SUPPORTS_CPUFREQ
1476 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1477 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1479 config SYS_HAS_CPU_MIPS32_R1
1482 config SYS_HAS_CPU_MIPS32_R2
1485 config SYS_HAS_CPU_MIPS64_R1
1488 config SYS_HAS_CPU_MIPS64_R2
1491 config SYS_HAS_CPU_R3000
1494 config SYS_HAS_CPU_TX39XX
1497 config SYS_HAS_CPU_VR41XX
1500 config SYS_HAS_CPU_R4300
1503 config SYS_HAS_CPU_R4X00
1506 config SYS_HAS_CPU_TX49XX
1509 config SYS_HAS_CPU_R5000
1512 config SYS_HAS_CPU_R5432
1515 config SYS_HAS_CPU_R5500
1518 config SYS_HAS_CPU_R6000
1521 config SYS_HAS_CPU_NEVADA
1524 config SYS_HAS_CPU_R8000
1527 config SYS_HAS_CPU_R10000
1530 config SYS_HAS_CPU_RM7000
1533 config SYS_HAS_CPU_RM9000
1536 config SYS_HAS_CPU_SB1
1539 config SYS_HAS_CPU_CAVIUM_OCTEON
1542 config SYS_HAS_CPU_BMIPS3300
1545 config SYS_HAS_CPU_BMIPS4350
1548 config SYS_HAS_CPU_BMIPS4380
1551 config SYS_HAS_CPU_BMIPS5000
1555 # CPU may reorder R->R, R->W, W->R, W->W
1556 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1558 config WEAK_ORDERING
1562 # CPU may reorder reads and writes beyond LL/SC
1563 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1565 config WEAK_REORDERING_BEYOND_LLSC
1570 # These two indicate any level of the MIPS32 and MIPS64 architecture
1574 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1578 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1581 # These two indicate the revision of the architecture, either Release 1 or Release 2
1585 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1589 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1591 config SYS_SUPPORTS_32BIT_KERNEL
1593 config SYS_SUPPORTS_64BIT_KERNEL
1595 config CPU_SUPPORTS_32BIT_KERNEL
1597 config CPU_SUPPORTS_64BIT_KERNEL
1599 config CPU_SUPPORTS_CPUFREQ
1601 config CPU_SUPPORTS_ADDRWINCFG
1603 config CPU_SUPPORTS_HUGEPAGES
1605 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1607 config MIPS_PGD_C0_CONTEXT
1609 default y if 64BIT && CPU_MIPSR2
1612 # Set to y for ptrace access to watch registers.
1614 config HARDWARE_WATCHPOINTS
1616 default y if CPU_MIPSR1 || CPU_MIPSR2
1622 prompt "Kernel code model"
1624 You should only select this option if you have a workload that
1625 actually benefits from 64-bit processing or if your machine has
1626 large memory. You will only be presented a single option in this
1627 menu if your system does not support both 32-bit and 64-bit kernels.
1630 bool "32-bit kernel"
1631 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1634 Select this option if you want to build a 32-bit kernel.
1636 bool "64-bit kernel"
1637 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1638 select HAVE_SYSCALL_WRAPPERS
1640 Select this option if you want to build a 64-bit kernel.
1645 prompt "Kernel page size"
1646 default PAGE_SIZE_4KB
1648 config PAGE_SIZE_4KB
1650 depends on !CPU_LOONGSON2
1652 This option select the standard 4kB Linux page size. On some
1653 R3000-family processors this is the only available page size. Using
1654 4kB page size will minimize memory consumption and is therefore
1655 recommended for low memory systems.
1657 config PAGE_SIZE_8KB
1659 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1661 Using 8kB page size will result in higher performance kernel at
1662 the price of higher memory consumption. This option is available
1663 only on R8000 and cnMIPS processors. Note that you will need a
1664 suitable Linux distribution to support this.
1666 config PAGE_SIZE_16KB
1668 depends on !CPU_R3000 && !CPU_TX39XX
1670 Using 16kB page size will result in higher performance kernel at
1671 the price of higher memory consumption. This option is available on
1672 all non-R3000 family processors. Note that you will need a suitable
1673 Linux distribution to support this.
1675 config PAGE_SIZE_32KB
1677 depends on CPU_CAVIUM_OCTEON
1679 Using 32kB page size will result in higher performance kernel at
1680 the price of higher memory consumption. This option is available
1681 only on cnMIPS cores. Note that you will need a suitable Linux
1682 distribution to support this.
1684 config PAGE_SIZE_64KB
1686 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1688 Using 64kB page size will result in higher performance kernel at
1689 the price of higher memory consumption. This option is available on
1690 all non-R3000 family processor. Not that at the time of this
1691 writing this option is still high experimental.
1695 config FORCE_MAX_ZONEORDER
1696 int "Maximum zone order"
1697 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1698 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1699 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1700 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1704 The kernel memory allocator divides physically contiguous memory
1705 blocks into "zones", where each zone is a power of two number of
1706 pages. This option selects the largest power of two that the kernel
1707 keeps in the memory allocator. If you need to allocate very large
1708 blocks of physically contiguous memory, then you may need to
1709 increase this value.
1711 This config option is actually maximum order plus one. For example,
1712 a value of 11 means that the largest free memory block is 2^10 pages.
1714 The page size is not necessarily 4KB. Keep this in mind
1715 when choosing a value for this option.
1720 config IP22_CPU_SCACHE
1725 # Support for a MIPS32 / MIPS64 style S-caches
1727 config MIPS_CPU_SCACHE
1731 config R5000_CPU_SCACHE
1735 config RM7000_CPU_SCACHE
1739 config SIBYTE_DMA_PAGEOPS
1740 bool "Use DMA to clear/copy pages"
1743 Instead of using the CPU to zero and copy pages, use a Data Mover
1744 channel. These DMA channels are otherwise unused by the standard
1745 SiByte Linux port. Seems to give a small performance benefit.
1747 config CPU_HAS_PREFETCH
1751 prompt "MIPS MT options"
1753 config MIPS_MT_DISABLED
1754 bool "Disable multithreading support."
1756 Use this option if your workload can't take advantage of
1757 MIPS hardware multithreading support. On systems that don't have
1758 the option of an MT-enabled processor this option will be the only
1759 option in this menu.
1762 bool "Use 1 TC on each available VPE for SMP"
1763 depends on SYS_SUPPORTS_MULTITHREADING
1764 select CPU_MIPSR2_IRQ_VI
1765 select CPU_MIPSR2_IRQ_EI
1767 select NR_CPUS_DEFAULT_2
1769 select SYS_SUPPORTS_SCHED_SMT if SMP
1770 select SYS_SUPPORTS_SMP
1773 This is a kernel model which is known a VSMP but lately has been
1774 marketesed into SMVP.
1775 Virtual SMP uses the processor's VPEs to implement virtual
1776 processors. In currently available configuration of the 34K processor
1777 this allows for a dual processor. Both processors will share the same
1778 primary caches; each will obtain the half of the TLB for it's own
1779 exclusive use. For a layman this model can be described as similar to
1780 what Intel calls Hyperthreading.
1782 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1785 bool "SMTC: Use all TCs on all VPEs for SMP"
1786 depends on CPU_MIPS32_R2
1787 #depends on CPU_MIPS64_R2 # once there is hardware ...
1788 depends on SYS_SUPPORTS_MULTITHREADING
1789 select CPU_MIPSR2_IRQ_VI
1790 select CPU_MIPSR2_IRQ_EI
1792 select NR_CPUS_DEFAULT_8
1794 select SYS_SUPPORTS_SMP
1797 This is a kernel model which is known a SMTC or lately has been
1798 marketesed into SMVP.
1799 is presenting the available TC's of the core as processors to Linux.
1800 On currently available 34K processors this means a Linux system will
1801 see up to 5 processors. The implementation of the SMTC kernel differs
1802 significantly from VSMP and cannot efficiently coexist in the same
1803 kernel binary so the choice between VSMP and SMTC is a compile time
1806 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1814 bool "SMT (multithreading) scheduler support"
1815 depends on SYS_SUPPORTS_SCHED_SMT
1818 SMT scheduler support improves the CPU scheduler's decision making
1819 when dealing with MIPS MT enabled cores at a cost of slightly
1820 increased overhead in some places. If unsure say N here.
1822 config SYS_SUPPORTS_SCHED_SMT
1826 config SYS_SUPPORTS_MULTITHREADING
1829 config MIPS_MT_FPAFF
1830 bool "Dynamic FPU affinity for FP-intensive threads"
1832 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1834 config MIPS_VPE_LOADER
1835 bool "VPE loader support."
1836 depends on SYS_SUPPORTS_MULTITHREADING
1837 select CPU_MIPSR2_IRQ_VI
1838 select CPU_MIPSR2_IRQ_EI
1841 Includes a loader for loading an elf relocatable object
1842 onto another VPE and running it.
1844 config MIPS_MT_SMTC_IM_BACKSTOP
1845 bool "Use per-TC register bits as backstop for inhibited IM bits"
1846 depends on MIPS_MT_SMTC
1849 To support multiple TC microthreads acting as "CPUs" within
1850 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1851 during interrupt handling. To support legacy drivers and interrupt
1852 controller management code, SMTC has a "backstop" to track and
1853 if necessary restore the interrupt mask. This has some performance
1854 impact on interrupt service overhead.
1856 config MIPS_MT_SMTC_IRQAFF
1857 bool "Support IRQ affinity API"
1858 depends on MIPS_MT_SMTC
1861 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1862 for SMTC Linux kernel. Requires platform support, of which
1863 an example can be found in the MIPS kernel i8259 and Malta
1864 platform code. Adds some overhead to interrupt dispatch, and
1865 should be used only if you know what you are doing.
1867 config MIPS_VPE_LOADER_TOM
1868 bool "Load VPE program into memory hidden from linux"
1869 depends on MIPS_VPE_LOADER
1872 The loader can use memory that is present but has been hidden from
1873 Linux using the kernel command line option "mem=xxMB". It's up to
1874 you to ensure the amount you put in the option and the space your
1875 program requires is less or equal to the amount physically present.
1877 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1878 config MIPS_VPE_APSP_API
1879 bool "Enable support for AP/SP API (RTLX)"
1880 depends on MIPS_VPE_LOADER
1883 config MIPS_APSP_KSPD
1885 depends on MIPS_VPE_APSP_API
1888 KSPD is a kernel daemon that accepts syscall requests from the SP
1889 side, actions them and returns the results. It also handles the
1890 "exit" syscall notifying other kernel modules the SP program is
1891 exiting. You probably want to say yes here.
1894 bool "MIPS CMP framework support"
1895 depends on SYS_SUPPORTS_MIPS_CMP
1897 select SYS_SUPPORTS_SMP
1898 select SYS_SUPPORTS_SCHED_SMT if SMP
1899 select WEAK_ORDERING
1902 This is a placeholder option for the GCMP work. It will need to
1903 be handled differently...
1905 config SB1_PASS_1_WORKAROUNDS
1907 depends on CPU_SB1_PASS_1
1910 config SB1_PASS_2_WORKAROUNDS
1912 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1915 config SB1_PASS_2_1_WORKAROUNDS
1917 depends on CPU_SB1 && CPU_SB1_PASS_2
1920 config 64BIT_PHYS_ADDR
1923 config ARCH_PHYS_ADDR_T_64BIT
1924 def_bool 64BIT_PHYS_ADDR
1926 config CPU_HAS_SMARTMIPS
1927 depends on SYS_SUPPORTS_SMARTMIPS
1928 bool "Support for the SmartMIPS ASE"
1930 SmartMIPS is a extension of the MIPS32 architecture aimed at
1931 increased security at both hardware and software level for
1932 smartcards. Enabling this option will allow proper use of the
1933 SmartMIPS instructions by Linux applications. However a kernel with
1934 this option will not work on a MIPS core without SmartMIPS core. If
1935 you don't know you probably don't have SmartMIPS and should say N
1942 # Vectored interrupt mode is an R2 feature
1944 config CPU_MIPSR2_IRQ_VI
1948 # Extended interrupt mode is an R2 feature
1950 config CPU_MIPSR2_IRQ_EI
1955 depends on !CPU_R3000
1958 config GENERIC_CLOCKEVENTS_BROADCAST
1964 config CPU_DADDI_WORKAROUNDS
1967 config CPU_R4000_WORKAROUNDS
1969 select CPU_R4400_WORKAROUNDS
1971 config CPU_R4400_WORKAROUNDS
1975 # - Highmem only makes sense for the 32-bit kernel.
1976 # - The current highmem code will only work properly on physically indexed
1977 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1978 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1979 # moment we protect the user and offer the highmem option only on machines
1980 # where it's known to be safe. This will not offer highmem on a few systems
1981 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1982 # indexed CPUs but we're playing safe.
1983 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1984 # know they might have memory configurations that could make use of highmem
1988 bool "High Memory Support"
1989 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1991 config CPU_SUPPORTS_HIGHMEM
1994 config SYS_SUPPORTS_HIGHMEM
1997 config SYS_SUPPORTS_SMARTMIPS
2000 config ARCH_FLATMEM_ENABLE
2002 depends on !NUMA && !CPU_LOONGSON2
2004 config ARCH_DISCONTIGMEM_ENABLE
2006 default y if SGI_IP27
2008 Say Y to support efficient handling of discontiguous physical memory,
2009 for architectures which are either NUMA (Non-Uniform Memory Access)
2010 or have huge holes in the physical address space for other reasons.
2011 See <file:Documentation/vm/numa> for more.
2013 config ARCH_POPULATES_NODE_MAP
2016 config ARCH_SPARSEMEM_ENABLE
2018 select SPARSEMEM_STATIC
2022 depends on SYS_SUPPORTS_NUMA
2024 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2025 Access). This option improves performance on systems with more
2026 than two nodes; on two node systems it is generally better to
2027 leave it disabled; on single node systems disable this option
2030 config SYS_SUPPORTS_NUMA
2036 depends on NEED_MULTIPLE_NODES
2038 config HW_PERF_EVENTS
2039 bool "Enable hardware performance counter support for perf events"
2040 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2043 Enable hardware performance counter support for perf events. If
2044 disabled, perf events will use software events only.
2049 bool "Multi-Processing support"
2050 depends on SYS_SUPPORTS_SMP
2052 select USE_GENERIC_SMP_HELPERS
2054 This enables support for systems with more than one CPU. If you have
2055 a system with only one CPU, like most personal computers, say N. If
2056 you have a system with more than one CPU, say Y.
2058 If you say N here, the kernel will run on single and multiprocessor
2059 machines, but will use only one CPU of a multiprocessor machine. If
2060 you say Y here, the kernel will run on many, but not all,
2061 singleprocessor machines. On a singleprocessor machine, the kernel
2062 will run faster if you say N here.
2064 People using multiprocessor machines who say Y here should also say
2065 Y to "Enhanced Real Time Clock Support", below.
2067 See also the SMP-HOWTO available at
2068 <http://www.tldp.org/docs.html#howto>.
2070 If you don't know what to do here, say N.
2075 config SYS_SUPPORTS_MIPS_CMP
2078 config SYS_SUPPORTS_SMP
2081 config NR_CPUS_DEFAULT_1
2084 config NR_CPUS_DEFAULT_2
2087 config NR_CPUS_DEFAULT_4
2090 config NR_CPUS_DEFAULT_8
2093 config NR_CPUS_DEFAULT_16
2096 config NR_CPUS_DEFAULT_32
2099 config NR_CPUS_DEFAULT_64
2103 int "Maximum number of CPUs (2-64)"
2104 range 1 64 if NR_CPUS_DEFAULT_1
2106 default "1" if NR_CPUS_DEFAULT_1
2107 default "2" if NR_CPUS_DEFAULT_2
2108 default "4" if NR_CPUS_DEFAULT_4
2109 default "8" if NR_CPUS_DEFAULT_8
2110 default "16" if NR_CPUS_DEFAULT_16
2111 default "32" if NR_CPUS_DEFAULT_32
2112 default "64" if NR_CPUS_DEFAULT_64
2114 This allows you to specify the maximum number of CPUs which this
2115 kernel will support. The maximum supported value is 32 for 32-bit
2116 kernel and 64 for 64-bit kernels; the minimum value which makes
2117 sense is 1 for Qemu (useful only for kernel debugging purposes)
2118 and 2 for all others.
2120 This is purely to save memory - each supported CPU adds
2121 approximately eight kilobytes to the kernel image. For best
2122 performance should round up your number of processors to the next
2125 source "kernel/time/Kconfig"
2128 # Timer Interrupt Frequency Configuration
2132 prompt "Timer frequency"
2135 Allows the configuration of the timer frequency.
2138 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2141 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2144 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2147 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2150 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2153 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2156 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2160 config SYS_SUPPORTS_48HZ
2163 config SYS_SUPPORTS_100HZ
2166 config SYS_SUPPORTS_128HZ
2169 config SYS_SUPPORTS_250HZ
2172 config SYS_SUPPORTS_256HZ
2175 config SYS_SUPPORTS_1000HZ
2178 config SYS_SUPPORTS_1024HZ
2181 config SYS_SUPPORTS_ARBIT_HZ
2183 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2184 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2185 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2186 !SYS_SUPPORTS_1024HZ
2191 default 100 if HZ_100
2192 default 128 if HZ_128
2193 default 250 if HZ_250
2194 default 256 if HZ_256
2195 default 1000 if HZ_1000
2196 default 1024 if HZ_1024
2198 source "kernel/Kconfig.preempt"
2200 config MIPS_INSANE_LARGE
2201 bool "Support for large 64-bit configurations"
2202 depends on CPU_R10000 && 64BIT
2204 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2205 previous 64-bit processors which only supported 40 bit / 1TB. If you
2206 need processes of more than 1TB virtual address space, say Y here.
2207 This will result in additional memory usage, so it is not
2208 recommended for normal users.
2211 bool "Kexec system call (EXPERIMENTAL)"
2212 depends on EXPERIMENTAL
2214 kexec is a system call that implements the ability to shutdown your
2215 current kernel, and to start another kernel. It is like a reboot
2216 but it is independent of the system firmware. And like a reboot
2217 you can start any kernel with it, not just Linux.
2219 The name comes from the similarity to the exec system call.
2221 It is an ongoing process to be certain the hardware in a machine
2222 is properly shutdown, so do not be surprised if this code does not
2223 initially work for you. It may help to enable device hotplugging
2224 support. As of this writing the exact hardware interface is
2225 strongly in flux, so no good recommendation can be made.
2228 bool "Enable seccomp to safely compute untrusted bytecode"
2232 This kernel feature is useful for number crunching applications
2233 that may need to compute untrusted bytecode during their
2234 execution. By using pipes or other transports made available to
2235 the process as file descriptors supporting the read/write
2236 syscalls, it's possible to isolate those applications in
2237 their own address space using seccomp. Once seccomp is
2238 enabled via /proc/<pid>/seccomp, it cannot be disabled
2239 and the task is only allowed to execute a few safe syscalls
2240 defined by each seccomp mode.
2242 If unsure, say Y. Only embedded should say N here.
2245 bool "Flattened Device Tree support"
2247 select OF_EARLY_FLATTREE
2249 Include support for flattened device tree machine descriptions.
2253 config LOCKDEP_SUPPORT
2257 config STACKTRACE_SUPPORT
2261 source "init/Kconfig"
2263 source "kernel/Kconfig.freezer"
2265 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2273 bool "Support for PCI controller"
2274 depends on HW_HAS_PCI
2277 Find out whether you have a PCI motherboard. PCI is the name of a
2278 bus system, i.e. the way the CPU talks to the other stuff inside
2279 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2285 source "drivers/pci/Kconfig"
2288 # ISA support is now enabled via select. Too many systems still have the one
2289 # or other ISA chip on the board that users don't know about so don't expect
2290 # users to choose the right thing ...
2297 depends on HW_HAS_EISA
2299 select GENERIC_ISA_DMA
2301 The Extended Industry Standard Architecture (EISA) bus was
2302 developed as an open alternative to the IBM MicroChannel bus.
2304 The EISA bus provided some of the features of the IBM MicroChannel
2305 bus while maintaining backward compatibility with cards made for
2306 the older ISA bus. The EISA bus saw limited use between 1988 and
2307 1995 when it was made obsolete by the PCI bus.
2309 Say Y here if you are building a kernel for an EISA-based machine.
2313 source "drivers/eisa/Kconfig"
2316 bool "TURBOchannel support"
2317 depends on MACH_DECSTATION
2319 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2320 processors. TURBOchannel programming specifications are available
2322 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2324 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2325 Linux driver support status is documented at:
2326 <http://www.linux-mips.org/wiki/DECstation>
2329 # bool "Access.Bus support"
2338 select MIPS_EXTERNAL_TIMER
2343 source "drivers/pcmcia/Kconfig"
2345 source "drivers/pci/hotplug/Kconfig"
2349 menu "Executable file formats"
2351 source "fs/Kconfig.binfmt"
2356 config MIPS32_COMPAT
2357 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2360 Select this option if you want Linux/MIPS 32-bit binary
2361 compatibility. Since all software available for Linux/MIPS is
2362 currently 32-bit you should say Y here.
2366 depends on MIPS32_COMPAT
2369 config SYSVIPC_COMPAT
2371 depends on COMPAT && SYSVIPC
2375 bool "Kernel support for o32 binaries"
2376 depends on MIPS32_COMPAT
2378 Select this option if you want to run o32 binaries. These are pure
2379 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2380 existing binaries are in this format.
2385 bool "Kernel support for n32 binaries"
2386 depends on MIPS32_COMPAT
2388 Select this option if you want to run n32 binaries. These are
2389 64-bit binaries using 32-bit quantities for addressing and certain
2390 data that would normally be 64-bit. They are used in special
2397 default y if MIPS32_O32 || MIPS32_N32
2401 menu "Power management options"
2403 config ARCH_HIBERNATION_POSSIBLE
2405 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2407 config ARCH_SUSPEND_POSSIBLE
2409 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2411 source "kernel/power/Kconfig"
2415 source "arch/mips/kernel/cpufreq/Kconfig"
2417 source "net/Kconfig"
2419 source "drivers/Kconfig"
2423 source "arch/mips/Kconfig.debug"
2425 source "security/Kconfig"
2427 source "crypto/Kconfig"
2429 menuconfig VIRTUALIZATION
2430 bool "Virtualization"
2433 Say Y here to get to see options for using your Linux host to run other
2434 operating systems inside virtual machines (guests).
2435 This option alone does not add any kernel code.
2437 If you say N, all options in this submenu will be skipped and disabled.
2441 source drivers/virtio/Kconfig
2443 endif # VIRTUALIZATION
2445 source "lib/Kconfig"