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_HWEIGHT
784 config GENERIC_CALIBRATE_DELAY
788 config GENERIC_CLOCKEVENTS
792 config GENERIC_CMOS_UPDATE
796 config SCHED_OMIT_FRAME_POINTER
801 # Select some configuration options automatically based on user selections.
806 config ARCH_MAY_HAVE_PC_FDC
855 select ARCH_REQUIRE_GPIOLIB
864 config DMA_NONCOHERENT
866 select NEED_DMA_MAP_STATE
868 config NEED_DMA_MAP_STATE
871 config SYS_HAS_EARLY_PRINTK
875 bool "Support for hot-pluggable CPUs"
876 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
878 Say Y here to allow turning CPUs off and on. CPUs can be
879 controlled through /sys/devices/system/cpu.
880 (Note: power management support will enable this option
881 automatically on SMP systems. )
882 Say N if you want to disable CPU hotplug.
884 config SYS_SUPPORTS_HOTPLUG_CPU
899 config MIPS_DISABLE_OBSOLETE_IDE
911 config GENERIC_ISA_DMA
913 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
916 config GENERIC_ISA_DMA_SUPPORT_BROKEN
918 select GENERIC_ISA_DMA
927 # Endianess selection. Sufficiently obscure so many users don't know what to
928 # answer,so we try hard to limit the available choices. Also the use of a
929 # choice statement should be more obvious to the user.
932 prompt "Endianess selection"
934 Some MIPS machines can be configured for either little or big endian
935 byte order. These modes require different kernels and a different
936 Linux distribution. In general there is one preferred byteorder for a
937 particular system but some systems are just as commonly used in the
938 one or the other endianness.
940 config CPU_BIG_ENDIAN
942 depends on SYS_SUPPORTS_BIG_ENDIAN
944 config CPU_LITTLE_ENDIAN
946 depends on SYS_SUPPORTS_LITTLE_ENDIAN
954 config SYS_SUPPORTS_APM_EMULATION
957 config SYS_SUPPORTS_BIG_ENDIAN
960 config SYS_SUPPORTS_LITTLE_ENDIAN
963 config SYS_SUPPORTS_HUGETLBFS
965 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
992 config IRQ_CPU_OCTEON
995 config MIPS_BOARDS_GEN
998 config PCI_GT64XXX_PCI0
1001 config NO_EXCEPT_FILL
1006 select SERIAL_RM9000
1012 select DMA_NONCOHERENT
1014 select SWAP_IO_SPACE
1015 select SYS_HAS_CPU_R5500
1016 select SYS_SUPPORTS_32BIT_KERNEL
1017 select SYS_SUPPORTS_64BIT_KERNEL
1018 select SYS_SUPPORTS_BIG_ENDIAN
1025 select DMA_NONCOHERENT
1026 select SYS_HAS_CPU_MIPS32_R2
1027 select SYS_SUPPORTS_32BIT_KERNEL
1028 select SYS_SUPPORTS_LITTLE_ENDIAN
1029 select SYS_SUPPORTS_BIG_ENDIAN
1031 select CPU_MIPSR2_IRQ_VI
1043 select DMA_NONCOHERENT
1045 select SYS_HAS_CPU_MIPS32_R1
1046 select SYS_HAS_EARLY_PRINTK
1047 select SYS_SUPPORTS_32BIT_KERNEL
1050 config SWAP_IO_SPACE
1053 config SERIAL_RM9000
1056 config SGI_HAS_INDYDOG
1068 config SGI_HAS_ZILOG
1071 config SGI_HAS_I8042
1074 config DEFAULT_SGI_PARTITION
1086 config MIPS_L1_CACHE_SHIFT
1088 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1089 default "6" if MIPS_CPU_SCACHE
1090 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1093 config HAVE_STD_PC_SERIAL_PORT
1097 bool "ARC console support"
1098 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1102 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1107 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1116 menu "CPU selection"
1122 config CPU_LOONGSON2E
1124 depends on SYS_HAS_CPU_LOONGSON2E
1125 select CPU_LOONGSON2
1127 The Loongson 2E processor implements the MIPS III instruction set
1128 with many extensions.
1130 It has an internal FPGA northbridge, which is compatiable to
1133 config CPU_LOONGSON2F
1135 depends on SYS_HAS_CPU_LOONGSON2F
1136 select CPU_LOONGSON2
1138 select ARCH_REQUIRE_GPIOLIB
1140 The Loongson 2F processor implements the MIPS III instruction set
1141 with many extensions.
1143 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1144 have a similar programming interface with FPGA northbridge used in
1147 config CPU_MIPS32_R1
1148 bool "MIPS32 Release 1"
1149 depends on SYS_HAS_CPU_MIPS32_R1
1150 select CPU_HAS_PREFETCH
1151 select CPU_SUPPORTS_32BIT_KERNEL
1152 select CPU_SUPPORTS_HIGHMEM
1154 Choose this option to build a kernel for release 1 or later of the
1155 MIPS32 architecture. Most modern embedded systems with a 32-bit
1156 MIPS processor are based on a MIPS32 processor. If you know the
1157 specific type of processor in your system, choose those that one
1158 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1159 Release 2 of the MIPS32 architecture is available since several
1160 years so chances are you even have a MIPS32 Release 2 processor
1161 in which case you should choose CPU_MIPS32_R2 instead for better
1164 config CPU_MIPS32_R2
1165 bool "MIPS32 Release 2"
1166 depends on SYS_HAS_CPU_MIPS32_R2
1167 select CPU_HAS_PREFETCH
1168 select CPU_SUPPORTS_32BIT_KERNEL
1169 select CPU_SUPPORTS_HIGHMEM
1171 Choose this option to build a kernel for release 2 or later of the
1172 MIPS32 architecture. Most modern embedded systems with a 32-bit
1173 MIPS processor are based on a MIPS32 processor. If you know the
1174 specific type of processor in your system, choose those that one
1175 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1177 config CPU_MIPS64_R1
1178 bool "MIPS64 Release 1"
1179 depends on SYS_HAS_CPU_MIPS64_R1
1180 select CPU_HAS_PREFETCH
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1184 select CPU_SUPPORTS_HUGEPAGES
1186 Choose this option to build a kernel for release 1 or later of the
1187 MIPS64 architecture. Many modern embedded systems with a 64-bit
1188 MIPS processor are based on a MIPS64 processor. If you know the
1189 specific type of processor in your system, choose those that one
1190 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1191 Release 2 of the MIPS64 architecture is available since several
1192 years so chances are you even have a MIPS64 Release 2 processor
1193 in which case you should choose CPU_MIPS64_R2 instead for better
1196 config CPU_MIPS64_R2
1197 bool "MIPS64 Release 2"
1198 depends on SYS_HAS_CPU_MIPS64_R2
1199 select CPU_HAS_PREFETCH
1200 select CPU_SUPPORTS_32BIT_KERNEL
1201 select CPU_SUPPORTS_64BIT_KERNEL
1202 select CPU_SUPPORTS_HIGHMEM
1203 select CPU_SUPPORTS_HUGEPAGES
1205 Choose this option to build a kernel for release 2 or later of the
1206 MIPS64 architecture. Many modern embedded systems with a 64-bit
1207 MIPS processor are based on a MIPS64 processor. If you know the
1208 specific type of processor in your system, choose those that one
1209 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1213 depends on SYS_HAS_CPU_R3000
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1218 Please make sure to pick the right CPU type. Linux/MIPS is not
1219 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1220 *not* work on R4000 machines and vice versa. However, since most
1221 of the supported machines have an R4000 (or similar) CPU, R4x00
1222 might be a safe bet. If the resulting kernel does not work,
1223 try to recompile with R3000.
1227 depends on SYS_HAS_CPU_TX39XX
1228 select CPU_SUPPORTS_32BIT_KERNEL
1232 depends on SYS_HAS_CPU_VR41XX
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1236 The options selects support for the NEC VR4100 series of processors.
1237 Only choose this option if you have one of these processors as a
1238 kernel built with this option will not run on any other type of
1239 processor or vice versa.
1243 depends on SYS_HAS_CPU_R4300
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1247 MIPS Technologies R4300-series processors.
1251 depends on SYS_HAS_CPU_R4X00
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1255 MIPS Technologies R4000-series processors other than 4300, including
1256 the R4000, R4400, R4600, and 4700.
1260 depends on SYS_HAS_CPU_TX49XX
1261 select CPU_HAS_PREFETCH
1262 select CPU_SUPPORTS_32BIT_KERNEL
1263 select CPU_SUPPORTS_64BIT_KERNEL
1267 depends on SYS_HAS_CPU_R5000
1268 select CPU_SUPPORTS_32BIT_KERNEL
1269 select CPU_SUPPORTS_64BIT_KERNEL
1271 MIPS Technologies R5000-series processors other than the Nevada.
1275 depends on SYS_HAS_CPU_R5432
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1281 depends on SYS_HAS_CPU_R5500
1282 select CPU_SUPPORTS_32BIT_KERNEL
1283 select CPU_SUPPORTS_64BIT_KERNEL
1284 select CPU_SUPPORTS_HUGEPAGES
1286 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1291 depends on EXPERIMENTAL
1292 depends on SYS_HAS_CPU_R6000
1293 select CPU_SUPPORTS_32BIT_KERNEL
1295 MIPS Technologies R6000 and R6000A series processors. Note these
1296 processors are extremely rare and the support for them is incomplete.
1300 depends on SYS_HAS_CPU_NEVADA
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1304 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1308 depends on EXPERIMENTAL
1309 depends on SYS_HAS_CPU_R8000
1310 select CPU_HAS_PREFETCH
1311 select CPU_SUPPORTS_64BIT_KERNEL
1313 MIPS Technologies R8000 processors. Note these processors are
1314 uncommon and the support for them is incomplete.
1318 depends on SYS_HAS_CPU_R10000
1319 select CPU_HAS_PREFETCH
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1322 select CPU_SUPPORTS_HIGHMEM
1324 MIPS Technologies R10000-series processors.
1328 depends on SYS_HAS_CPU_RM7000
1329 select CPU_HAS_PREFETCH
1330 select CPU_SUPPORTS_32BIT_KERNEL
1331 select CPU_SUPPORTS_64BIT_KERNEL
1332 select CPU_SUPPORTS_HIGHMEM
1336 depends on SYS_HAS_CPU_RM9000
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HIGHMEM
1341 select WEAK_ORDERING
1345 depends on SYS_HAS_CPU_SB1
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_64BIT_KERNEL
1348 select CPU_SUPPORTS_HIGHMEM
1349 select WEAK_ORDERING
1351 config CPU_CAVIUM_OCTEON
1352 bool "Cavium Octeon processor"
1353 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1355 select IRQ_CPU_OCTEON
1356 select CPU_HAS_PREFETCH
1357 select CPU_SUPPORTS_64BIT_KERNEL
1358 select SYS_SUPPORTS_SMP
1359 select NR_CPUS_DEFAULT_16
1360 select WEAK_ORDERING
1361 select CPU_SUPPORTS_HIGHMEM
1362 select CPU_SUPPORTS_HUGEPAGES
1364 The Cavium Octeon processor is a highly integrated chip containing
1365 many ethernet hardware widgets for networking tasks. The processor
1366 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1367 Full details can be found at http://www.caviumnetworks.com.
1369 config CPU_BMIPS3300
1371 depends on SYS_HAS_CPU_BMIPS3300
1372 select DMA_NONCOHERENT
1374 select SWAP_IO_SPACE
1375 select SYS_SUPPORTS_32BIT_KERNEL
1376 select WEAK_ORDERING
1378 Broadcom BMIPS3300 processors.
1380 config CPU_BMIPS4350
1382 depends on SYS_HAS_CPU_BMIPS4350
1383 select CPU_SUPPORTS_32BIT_KERNEL
1384 select DMA_NONCOHERENT
1386 select SWAP_IO_SPACE
1387 select SYS_SUPPORTS_SMP
1388 select SYS_SUPPORTS_HOTPLUG_CPU
1389 select WEAK_ORDERING
1391 Broadcom BMIPS4350 ("VIPER") processors.
1393 config CPU_BMIPS4380
1395 depends on SYS_HAS_CPU_BMIPS4380
1396 select CPU_SUPPORTS_32BIT_KERNEL
1397 select DMA_NONCOHERENT
1399 select SWAP_IO_SPACE
1400 select SYS_SUPPORTS_SMP
1401 select SYS_SUPPORTS_HOTPLUG_CPU
1402 select WEAK_ORDERING
1404 Broadcom BMIPS4380 processors.
1406 config CPU_BMIPS5000
1408 depends on SYS_HAS_CPU_BMIPS5000
1409 select CPU_SUPPORTS_32BIT_KERNEL
1410 select CPU_SUPPORTS_HIGHMEM
1411 select DMA_NONCOHERENT
1413 select SWAP_IO_SPACE
1414 select SYS_SUPPORTS_SMP
1415 select SYS_SUPPORTS_HOTPLUG_CPU
1416 select WEAK_ORDERING
1418 Broadcom BMIPS5000 processors.
1423 config CPU_NOP_WORKAROUNDS
1426 config CPU_JUMP_WORKAROUNDS
1429 config CPU_LOONGSON2F_WORKAROUNDS
1430 bool "Loongson 2F Workarounds"
1432 select CPU_NOP_WORKAROUNDS
1433 select CPU_JUMP_WORKAROUNDS
1435 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1436 require workarounds. Without workarounds the system may hang
1437 unexpectedly. For more information please refer to the gas
1438 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1440 Loongson 2F03 and later have fixed these issues and no workarounds
1441 are needed. The workarounds have no significant side effect on them
1442 but may decrease the performance of the system so this option should
1443 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1446 If unsure, please say Y.
1447 endif # CPU_LOONGSON2F
1449 config SYS_SUPPORTS_ZBOOT
1451 select HAVE_KERNEL_GZIP
1452 select HAVE_KERNEL_BZIP2
1453 select HAVE_KERNEL_LZMA
1454 select HAVE_KERNEL_LZO
1456 config SYS_SUPPORTS_ZBOOT_UART16550
1458 select SYS_SUPPORTS_ZBOOT
1460 config CPU_LOONGSON2
1462 select CPU_SUPPORTS_32BIT_KERNEL
1463 select CPU_SUPPORTS_64BIT_KERNEL
1464 select CPU_SUPPORTS_HIGHMEM
1466 config SYS_HAS_CPU_LOONGSON2E
1469 config SYS_HAS_CPU_LOONGSON2F
1471 select CPU_SUPPORTS_CPUFREQ
1472 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1473 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1475 config SYS_HAS_CPU_MIPS32_R1
1478 config SYS_HAS_CPU_MIPS32_R2
1481 config SYS_HAS_CPU_MIPS64_R1
1484 config SYS_HAS_CPU_MIPS64_R2
1487 config SYS_HAS_CPU_R3000
1490 config SYS_HAS_CPU_TX39XX
1493 config SYS_HAS_CPU_VR41XX
1496 config SYS_HAS_CPU_R4300
1499 config SYS_HAS_CPU_R4X00
1502 config SYS_HAS_CPU_TX49XX
1505 config SYS_HAS_CPU_R5000
1508 config SYS_HAS_CPU_R5432
1511 config SYS_HAS_CPU_R5500
1514 config SYS_HAS_CPU_R6000
1517 config SYS_HAS_CPU_NEVADA
1520 config SYS_HAS_CPU_R8000
1523 config SYS_HAS_CPU_R10000
1526 config SYS_HAS_CPU_RM7000
1529 config SYS_HAS_CPU_RM9000
1532 config SYS_HAS_CPU_SB1
1535 config SYS_HAS_CPU_CAVIUM_OCTEON
1538 config SYS_HAS_CPU_BMIPS3300
1541 config SYS_HAS_CPU_BMIPS4350
1544 config SYS_HAS_CPU_BMIPS4380
1547 config SYS_HAS_CPU_BMIPS5000
1551 # CPU may reorder R->R, R->W, W->R, W->W
1552 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1554 config WEAK_ORDERING
1558 # CPU may reorder reads and writes beyond LL/SC
1559 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1561 config WEAK_REORDERING_BEYOND_LLSC
1566 # These two indicate any level of the MIPS32 and MIPS64 architecture
1570 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1574 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1577 # These two indicate the revision of the architecture, either Release 1 or Release 2
1581 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1585 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1587 config SYS_SUPPORTS_32BIT_KERNEL
1589 config SYS_SUPPORTS_64BIT_KERNEL
1591 config CPU_SUPPORTS_32BIT_KERNEL
1593 config CPU_SUPPORTS_64BIT_KERNEL
1595 config CPU_SUPPORTS_CPUFREQ
1597 config CPU_SUPPORTS_ADDRWINCFG
1599 config CPU_SUPPORTS_HUGEPAGES
1601 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1603 config MIPS_PGD_C0_CONTEXT
1605 default y if 64BIT && CPU_MIPSR2
1608 # Set to y for ptrace access to watch registers.
1610 config HARDWARE_WATCHPOINTS
1612 default y if CPU_MIPSR1 || CPU_MIPSR2
1618 prompt "Kernel code model"
1620 You should only select this option if you have a workload that
1621 actually benefits from 64-bit processing or if your machine has
1622 large memory. You will only be presented a single option in this
1623 menu if your system does not support both 32-bit and 64-bit kernels.
1626 bool "32-bit kernel"
1627 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1630 Select this option if you want to build a 32-bit kernel.
1632 bool "64-bit kernel"
1633 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1634 select HAVE_SYSCALL_WRAPPERS
1636 Select this option if you want to build a 64-bit kernel.
1641 prompt "Kernel page size"
1642 default PAGE_SIZE_4KB
1644 config PAGE_SIZE_4KB
1646 depends on !CPU_LOONGSON2
1648 This option select the standard 4kB Linux page size. On some
1649 R3000-family processors this is the only available page size. Using
1650 4kB page size will minimize memory consumption and is therefore
1651 recommended for low memory systems.
1653 config PAGE_SIZE_8KB
1655 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1657 Using 8kB page size will result in higher performance kernel at
1658 the price of higher memory consumption. This option is available
1659 only on R8000 and cnMIPS processors. Note that you will need a
1660 suitable Linux distribution to support this.
1662 config PAGE_SIZE_16KB
1664 depends on !CPU_R3000 && !CPU_TX39XX
1666 Using 16kB page size will result in higher performance kernel at
1667 the price of higher memory consumption. This option is available on
1668 all non-R3000 family processors. Note that you will need a suitable
1669 Linux distribution to support this.
1671 config PAGE_SIZE_32KB
1673 depends on CPU_CAVIUM_OCTEON
1675 Using 32kB page size will result in higher performance kernel at
1676 the price of higher memory consumption. This option is available
1677 only on cnMIPS cores. Note that you will need a suitable Linux
1678 distribution to support this.
1680 config PAGE_SIZE_64KB
1682 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1684 Using 64kB page size will result in higher performance kernel at
1685 the price of higher memory consumption. This option is available on
1686 all non-R3000 family processor. Not that at the time of this
1687 writing this option is still high experimental.
1691 config FORCE_MAX_ZONEORDER
1692 int "Maximum zone order"
1693 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1694 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1695 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1696 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1700 The kernel memory allocator divides physically contiguous memory
1701 blocks into "zones", where each zone is a power of two number of
1702 pages. This option selects the largest power of two that the kernel
1703 keeps in the memory allocator. If you need to allocate very large
1704 blocks of physically contiguous memory, then you may need to
1705 increase this value.
1707 This config option is actually maximum order plus one. For example,
1708 a value of 11 means that the largest free memory block is 2^10 pages.
1710 The page size is not necessarily 4KB. Keep this in mind
1711 when choosing a value for this option.
1716 config IP22_CPU_SCACHE
1721 # Support for a MIPS32 / MIPS64 style S-caches
1723 config MIPS_CPU_SCACHE
1727 config R5000_CPU_SCACHE
1731 config RM7000_CPU_SCACHE
1735 config SIBYTE_DMA_PAGEOPS
1736 bool "Use DMA to clear/copy pages"
1739 Instead of using the CPU to zero and copy pages, use a Data Mover
1740 channel. These DMA channels are otherwise unused by the standard
1741 SiByte Linux port. Seems to give a small performance benefit.
1743 config CPU_HAS_PREFETCH
1747 prompt "MIPS MT options"
1749 config MIPS_MT_DISABLED
1750 bool "Disable multithreading support."
1752 Use this option if your workload can't take advantage of
1753 MIPS hardware multithreading support. On systems that don't have
1754 the option of an MT-enabled processor this option will be the only
1755 option in this menu.
1758 bool "Use 1 TC on each available VPE for SMP"
1759 depends on SYS_SUPPORTS_MULTITHREADING
1760 select CPU_MIPSR2_IRQ_VI
1761 select CPU_MIPSR2_IRQ_EI
1763 select NR_CPUS_DEFAULT_2
1765 select SYS_SUPPORTS_SCHED_SMT if SMP
1766 select SYS_SUPPORTS_SMP
1769 This is a kernel model which is known a VSMP but lately has been
1770 marketesed into SMVP.
1771 Virtual SMP uses the processor's VPEs to implement virtual
1772 processors. In currently available configuration of the 34K processor
1773 this allows for a dual processor. Both processors will share the same
1774 primary caches; each will obtain the half of the TLB for it's own
1775 exclusive use. For a layman this model can be described as similar to
1776 what Intel calls Hyperthreading.
1778 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1781 bool "SMTC: Use all TCs on all VPEs for SMP"
1782 depends on CPU_MIPS32_R2
1783 #depends on CPU_MIPS64_R2 # once there is hardware ...
1784 depends on SYS_SUPPORTS_MULTITHREADING
1785 select CPU_MIPSR2_IRQ_VI
1786 select CPU_MIPSR2_IRQ_EI
1788 select NR_CPUS_DEFAULT_8
1790 select SYS_SUPPORTS_SMP
1793 This is a kernel model which is known a SMTC or lately has been
1794 marketesed into SMVP.
1795 is presenting the available TC's of the core as processors to Linux.
1796 On currently available 34K processors this means a Linux system will
1797 see up to 5 processors. The implementation of the SMTC kernel differs
1798 significantly from VSMP and cannot efficiently coexist in the same
1799 kernel binary so the choice between VSMP and SMTC is a compile time
1802 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1810 bool "SMT (multithreading) scheduler support"
1811 depends on SYS_SUPPORTS_SCHED_SMT
1814 SMT scheduler support improves the CPU scheduler's decision making
1815 when dealing with MIPS MT enabled cores at a cost of slightly
1816 increased overhead in some places. If unsure say N here.
1818 config SYS_SUPPORTS_SCHED_SMT
1822 config SYS_SUPPORTS_MULTITHREADING
1825 config MIPS_MT_FPAFF
1826 bool "Dynamic FPU affinity for FP-intensive threads"
1828 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1830 config MIPS_VPE_LOADER
1831 bool "VPE loader support."
1832 depends on SYS_SUPPORTS_MULTITHREADING
1833 select CPU_MIPSR2_IRQ_VI
1834 select CPU_MIPSR2_IRQ_EI
1837 Includes a loader for loading an elf relocatable object
1838 onto another VPE and running it.
1840 config MIPS_MT_SMTC_IM_BACKSTOP
1841 bool "Use per-TC register bits as backstop for inhibited IM bits"
1842 depends on MIPS_MT_SMTC
1845 To support multiple TC microthreads acting as "CPUs" within
1846 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1847 during interrupt handling. To support legacy drivers and interrupt
1848 controller management code, SMTC has a "backstop" to track and
1849 if necessary restore the interrupt mask. This has some performance
1850 impact on interrupt service overhead.
1852 config MIPS_MT_SMTC_IRQAFF
1853 bool "Support IRQ affinity API"
1854 depends on MIPS_MT_SMTC
1857 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1858 for SMTC Linux kernel. Requires platform support, of which
1859 an example can be found in the MIPS kernel i8259 and Malta
1860 platform code. Adds some overhead to interrupt dispatch, and
1861 should be used only if you know what you are doing.
1863 config MIPS_VPE_LOADER_TOM
1864 bool "Load VPE program into memory hidden from linux"
1865 depends on MIPS_VPE_LOADER
1868 The loader can use memory that is present but has been hidden from
1869 Linux using the kernel command line option "mem=xxMB". It's up to
1870 you to ensure the amount you put in the option and the space your
1871 program requires is less or equal to the amount physically present.
1873 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1874 config MIPS_VPE_APSP_API
1875 bool "Enable support for AP/SP API (RTLX)"
1876 depends on MIPS_VPE_LOADER
1879 config MIPS_APSP_KSPD
1881 depends on MIPS_VPE_APSP_API
1884 KSPD is a kernel daemon that accepts syscall requests from the SP
1885 side, actions them and returns the results. It also handles the
1886 "exit" syscall notifying other kernel modules the SP program is
1887 exiting. You probably want to say yes here.
1890 bool "MIPS CMP framework support"
1891 depends on SYS_SUPPORTS_MIPS_CMP
1893 select SYS_SUPPORTS_SMP
1894 select SYS_SUPPORTS_SCHED_SMT if SMP
1895 select WEAK_ORDERING
1898 This is a placeholder option for the GCMP work. It will need to
1899 be handled differently...
1901 config SB1_PASS_1_WORKAROUNDS
1903 depends on CPU_SB1_PASS_1
1906 config SB1_PASS_2_WORKAROUNDS
1908 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1911 config SB1_PASS_2_1_WORKAROUNDS
1913 depends on CPU_SB1 && CPU_SB1_PASS_2
1916 config 64BIT_PHYS_ADDR
1919 config ARCH_PHYS_ADDR_T_64BIT
1920 def_bool 64BIT_PHYS_ADDR
1922 config CPU_HAS_SMARTMIPS
1923 depends on SYS_SUPPORTS_SMARTMIPS
1924 bool "Support for the SmartMIPS ASE"
1926 SmartMIPS is a extension of the MIPS32 architecture aimed at
1927 increased security at both hardware and software level for
1928 smartcards. Enabling this option will allow proper use of the
1929 SmartMIPS instructions by Linux applications. However a kernel with
1930 this option will not work on a MIPS core without SmartMIPS core. If
1931 you don't know you probably don't have SmartMIPS and should say N
1938 # Vectored interrupt mode is an R2 feature
1940 config CPU_MIPSR2_IRQ_VI
1944 # Extended interrupt mode is an R2 feature
1946 config CPU_MIPSR2_IRQ_EI
1951 depends on !CPU_R3000
1954 config GENERIC_CLOCKEVENTS_BROADCAST
1960 config CPU_DADDI_WORKAROUNDS
1963 config CPU_R4000_WORKAROUNDS
1965 select CPU_R4400_WORKAROUNDS
1967 config CPU_R4400_WORKAROUNDS
1971 # - Highmem only makes sense for the 32-bit kernel.
1972 # - The current highmem code will only work properly on physically indexed
1973 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1974 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1975 # moment we protect the user and offer the highmem option only on machines
1976 # where it's known to be safe. This will not offer highmem on a few systems
1977 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1978 # indexed CPUs but we're playing safe.
1979 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1980 # know they might have memory configurations that could make use of highmem
1984 bool "High Memory Support"
1985 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1987 config CPU_SUPPORTS_HIGHMEM
1990 config SYS_SUPPORTS_HIGHMEM
1993 config SYS_SUPPORTS_SMARTMIPS
1996 config ARCH_FLATMEM_ENABLE
1998 depends on !NUMA && !CPU_LOONGSON2
2000 config ARCH_DISCONTIGMEM_ENABLE
2002 default y if SGI_IP27
2004 Say Y to support efficient handling of discontiguous physical memory,
2005 for architectures which are either NUMA (Non-Uniform Memory Access)
2006 or have huge holes in the physical address space for other reasons.
2007 See <file:Documentation/vm/numa> for more.
2009 config ARCH_POPULATES_NODE_MAP
2012 config ARCH_SPARSEMEM_ENABLE
2014 select SPARSEMEM_STATIC
2018 depends on SYS_SUPPORTS_NUMA
2020 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2021 Access). This option improves performance on systems with more
2022 than two nodes; on two node systems it is generally better to
2023 leave it disabled; on single node systems disable this option
2026 config SYS_SUPPORTS_NUMA
2032 depends on NEED_MULTIPLE_NODES
2034 config HW_PERF_EVENTS
2035 bool "Enable hardware performance counter support for perf events"
2036 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2039 Enable hardware performance counter support for perf events. If
2040 disabled, perf events will use software events only.
2045 bool "Multi-Processing support"
2046 depends on SYS_SUPPORTS_SMP
2048 select USE_GENERIC_SMP_HELPERS
2050 This enables support for systems with more than one CPU. If you have
2051 a system with only one CPU, like most personal computers, say N. If
2052 you have a system with more than one CPU, say Y.
2054 If you say N here, the kernel will run on single and multiprocessor
2055 machines, but will use only one CPU of a multiprocessor machine. If
2056 you say Y here, the kernel will run on many, but not all,
2057 singleprocessor machines. On a singleprocessor machine, the kernel
2058 will run faster if you say N here.
2060 People using multiprocessor machines who say Y here should also say
2061 Y to "Enhanced Real Time Clock Support", below.
2063 See also the SMP-HOWTO available at
2064 <http://www.tldp.org/docs.html#howto>.
2066 If you don't know what to do here, say N.
2071 config SYS_SUPPORTS_MIPS_CMP
2074 config SYS_SUPPORTS_SMP
2077 config NR_CPUS_DEFAULT_1
2080 config NR_CPUS_DEFAULT_2
2083 config NR_CPUS_DEFAULT_4
2086 config NR_CPUS_DEFAULT_8
2089 config NR_CPUS_DEFAULT_16
2092 config NR_CPUS_DEFAULT_32
2095 config NR_CPUS_DEFAULT_64
2099 int "Maximum number of CPUs (2-64)"
2100 range 1 64 if NR_CPUS_DEFAULT_1
2102 default "1" if NR_CPUS_DEFAULT_1
2103 default "2" if NR_CPUS_DEFAULT_2
2104 default "4" if NR_CPUS_DEFAULT_4
2105 default "8" if NR_CPUS_DEFAULT_8
2106 default "16" if NR_CPUS_DEFAULT_16
2107 default "32" if NR_CPUS_DEFAULT_32
2108 default "64" if NR_CPUS_DEFAULT_64
2110 This allows you to specify the maximum number of CPUs which this
2111 kernel will support. The maximum supported value is 32 for 32-bit
2112 kernel and 64 for 64-bit kernels; the minimum value which makes
2113 sense is 1 for Qemu (useful only for kernel debugging purposes)
2114 and 2 for all others.
2116 This is purely to save memory - each supported CPU adds
2117 approximately eight kilobytes to the kernel image. For best
2118 performance should round up your number of processors to the next
2121 source "kernel/time/Kconfig"
2124 # Timer Interrupt Frequency Configuration
2128 prompt "Timer frequency"
2131 Allows the configuration of the timer frequency.
2134 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2137 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2140 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2143 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2146 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2149 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2152 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2156 config SYS_SUPPORTS_48HZ
2159 config SYS_SUPPORTS_100HZ
2162 config SYS_SUPPORTS_128HZ
2165 config SYS_SUPPORTS_250HZ
2168 config SYS_SUPPORTS_256HZ
2171 config SYS_SUPPORTS_1000HZ
2174 config SYS_SUPPORTS_1024HZ
2177 config SYS_SUPPORTS_ARBIT_HZ
2179 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2180 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2181 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2182 !SYS_SUPPORTS_1024HZ
2187 default 100 if HZ_100
2188 default 128 if HZ_128
2189 default 250 if HZ_250
2190 default 256 if HZ_256
2191 default 1000 if HZ_1000
2192 default 1024 if HZ_1024
2194 source "kernel/Kconfig.preempt"
2196 config MIPS_INSANE_LARGE
2197 bool "Support for large 64-bit configurations"
2198 depends on CPU_R10000 && 64BIT
2200 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2201 previous 64-bit processors which only supported 40 bit / 1TB. If you
2202 need processes of more than 1TB virtual address space, say Y here.
2203 This will result in additional memory usage, so it is not
2204 recommended for normal users.
2207 bool "Kexec system call (EXPERIMENTAL)"
2208 depends on EXPERIMENTAL
2210 kexec is a system call that implements the ability to shutdown your
2211 current kernel, and to start another kernel. It is like a reboot
2212 but it is independent of the system firmware. And like a reboot
2213 you can start any kernel with it, not just Linux.
2215 The name comes from the similarity to the exec system call.
2217 It is an ongoing process to be certain the hardware in a machine
2218 is properly shutdown, so do not be surprised if this code does not
2219 initially work for you. It may help to enable device hotplugging
2220 support. As of this writing the exact hardware interface is
2221 strongly in flux, so no good recommendation can be made.
2224 bool "Enable seccomp to safely compute untrusted bytecode"
2228 This kernel feature is useful for number crunching applications
2229 that may need to compute untrusted bytecode during their
2230 execution. By using pipes or other transports made available to
2231 the process as file descriptors supporting the read/write
2232 syscalls, it's possible to isolate those applications in
2233 their own address space using seccomp. Once seccomp is
2234 enabled via /proc/<pid>/seccomp, it cannot be disabled
2235 and the task is only allowed to execute a few safe syscalls
2236 defined by each seccomp mode.
2238 If unsure, say Y. Only embedded should say N here.
2241 bool "Flattened Device Tree support"
2243 select OF_EARLY_FLATTREE
2245 Include support for flattened device tree machine descriptions.
2249 config LOCKDEP_SUPPORT
2253 config STACKTRACE_SUPPORT
2257 source "init/Kconfig"
2259 source "kernel/Kconfig.freezer"
2261 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2269 bool "Support for PCI controller"
2270 depends on HW_HAS_PCI
2273 Find out whether you have a PCI motherboard. PCI is the name of a
2274 bus system, i.e. the way the CPU talks to the other stuff inside
2275 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2281 source "drivers/pci/Kconfig"
2284 # ISA support is now enabled via select. Too many systems still have the one
2285 # or other ISA chip on the board that users don't know about so don't expect
2286 # users to choose the right thing ...
2293 depends on HW_HAS_EISA
2295 select GENERIC_ISA_DMA
2297 The Extended Industry Standard Architecture (EISA) bus was
2298 developed as an open alternative to the IBM MicroChannel bus.
2300 The EISA bus provided some of the features of the IBM MicroChannel
2301 bus while maintaining backward compatibility with cards made for
2302 the older ISA bus. The EISA bus saw limited use between 1988 and
2303 1995 when it was made obsolete by the PCI bus.
2305 Say Y here if you are building a kernel for an EISA-based machine.
2309 source "drivers/eisa/Kconfig"
2312 bool "TURBOchannel support"
2313 depends on MACH_DECSTATION
2315 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2316 processors. TURBOchannel programming specifications are available
2318 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2320 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2321 Linux driver support status is documented at:
2322 <http://www.linux-mips.org/wiki/DECstation>
2325 # bool "Access.Bus support"
2334 select MIPS_EXTERNAL_TIMER
2339 source "drivers/pcmcia/Kconfig"
2341 source "drivers/pci/hotplug/Kconfig"
2345 menu "Executable file formats"
2347 source "fs/Kconfig.binfmt"
2352 config MIPS32_COMPAT
2353 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2356 Select this option if you want Linux/MIPS 32-bit binary
2357 compatibility. Since all software available for Linux/MIPS is
2358 currently 32-bit you should say Y here.
2362 depends on MIPS32_COMPAT
2365 config SYSVIPC_COMPAT
2367 depends on COMPAT && SYSVIPC
2371 bool "Kernel support for o32 binaries"
2372 depends on MIPS32_COMPAT
2374 Select this option if you want to run o32 binaries. These are pure
2375 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2376 existing binaries are in this format.
2381 bool "Kernel support for n32 binaries"
2382 depends on MIPS32_COMPAT
2384 Select this option if you want to run n32 binaries. These are
2385 64-bit binaries using 32-bit quantities for addressing and certain
2386 data that would normally be 64-bit. They are used in special
2393 default y if MIPS32_O32 || MIPS32_N32
2397 menu "Power management options"
2399 config ARCH_HIBERNATION_POSSIBLE
2401 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2403 config ARCH_SUSPEND_POSSIBLE
2405 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2407 source "kernel/power/Kconfig"
2411 source "arch/mips/kernel/cpufreq/Kconfig"
2413 source "net/Kconfig"
2415 source "drivers/Kconfig"
2419 source "arch/mips/Kconfig.debug"
2421 source "security/Kconfig"
2423 source "crypto/Kconfig"
2425 menuconfig VIRTUALIZATION
2426 bool "Virtualization"
2429 Say Y here to get to see options for using your Linux host to run other
2430 operating systems inside virtual machines (guests).
2431 This option alone does not add any kernel code.
2433 If you say N, all options in this submenu will be skipped and disabled.
2437 source drivers/virtio/Kconfig
2439 endif # VIRTUALIZATION
2441 source "lib/Kconfig"