4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PCSPKR_PLATFORM
9 select HAVE_PERF_EVENTS
10 select PERF_USE_VMALLOC
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select RTC_LIB if !MACH_LOONGSON
21 select GENERIC_ATOMIC64 if !64BIT
23 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_HARDIRQS
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select HAVE_ARCH_JUMP_LABEL
29 menu "Machine selection"
39 bool "Alchemy processor based machines"
40 select 64BIT_PHYS_ADDR
44 select SYS_HAS_CPU_MIPS32_R1
45 select SYS_SUPPORTS_32BIT_KERNEL
46 select SYS_SUPPORTS_APM_EMULATION
48 select ARCH_WANT_OPTIONAL_GPIOLIB
49 select SYS_SUPPORTS_ZBOOT
52 bool "Texas Instruments AR7"
54 select DMA_NONCOHERENT
60 select SYS_HAS_CPU_MIPS32_R1
61 select SYS_HAS_EARLY_PRINTK
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_LITTLE_ENDIAN
64 select SYS_SUPPORTS_ZBOOT_UART16550
65 select ARCH_REQUIRE_GPIOLIB
69 Support for the Texas Instruments AR7 System-on-a-Chip
70 family: TNETD7100, 7200 and 7300.
73 bool "Atheros AR71XX/AR724X/AR913X based boards"
74 select ARCH_REQUIRE_GPIOLIB
78 select DMA_NONCOHERENT
81 select SYS_HAS_CPU_MIPS32_R2
82 select SYS_HAS_EARLY_PRINTK
83 select SYS_SUPPORTS_32BIT_KERNEL
84 select SYS_SUPPORTS_BIG_ENDIAN
86 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
89 bool "Broadcom BCM47XX based boards"
92 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_MIPS32_R1
96 select SYS_SUPPORTS_32BIT_KERNEL
97 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SSB_DRIVER_MIPS
100 select SSB_DRIVER_EXTIF
102 select SSB_B43_PCI_BRIDGE if PCI
103 select SSB_PCICORE_HOSTMODE if PCI
105 select SYS_HAS_EARLY_PRINTK
108 Support for BCM47XX based boards
111 bool "Broadcom BCM63XX based boards"
114 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_HAS_EARLY_PRINTK
121 select ARCH_REQUIRE_GPIOLIB
123 Support for BCM63XX based boards
130 select DMA_NONCOHERENT
136 select PCI_GT64XXX_PCI0
138 select SYS_HAS_CPU_NEVADA
139 select SYS_HAS_EARLY_PRINTK
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_64BIT_KERNEL
142 select SYS_SUPPORTS_LITTLE_ENDIAN
144 config MACH_DECSTATION
151 select CPU_DADDI_WORKAROUNDS if 64BIT
152 select CPU_R4000_WORKAROUNDS if 64BIT
153 select CPU_R4400_WORKAROUNDS if 64BIT
154 select DMA_NONCOHERENT
157 select SYS_HAS_CPU_R3000
158 select SYS_HAS_CPU_R4X00
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_128HZ
163 select SYS_SUPPORTS_256HZ
164 select SYS_SUPPORTS_1024HZ
166 This enables support for DEC's MIPS based workstations. For details
167 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
168 DECstation porting pages on <http://decstation.unix-ag.org/>.
170 If you have one of the following DECstation Models you definitely
171 want to choose R4xx0 for the CPU Type:
178 otherwise choose R3000.
181 bool "Jazz family of machines"
184 select ARCH_MAY_HAVE_PC_FDC
187 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
188 select GENERIC_ISA_DMA
193 select SYS_HAS_CPU_R4X00
194 select SYS_SUPPORTS_32BIT_KERNEL
195 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
196 select SYS_SUPPORTS_100HZ
198 This a family of machines based on the MIPS R4030 chipset which was
199 used by several vendors to build RISC/os and Windows NT workstations.
200 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
201 Olivetti M700-10 workstations.
204 bool "Ingenic JZ4740 based machines"
205 select SYS_HAS_CPU_MIPS32_R1
206 select SYS_SUPPORTS_32BIT_KERNEL
207 select SYS_SUPPORTS_LITTLE_ENDIAN
208 select DMA_NONCOHERENT
211 select ARCH_REQUIRE_GPIOLIB
212 select SYS_HAS_EARLY_PRINTK
217 bool "Lantiq based platforms"
218 select DMA_NONCOHERENT
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_MULTITHREADING
227 select SYS_HAS_EARLY_PRINTK
228 select ARCH_REQUIRE_GPIOLIB
235 bool "LASAT Networks platforms"
238 select DMA_NONCOHERENT
239 select SYS_HAS_EARLY_PRINTK
242 select PCI_GT64XXX_PCI0
244 select R5000_CPU_SCACHE
245 select SYS_HAS_CPU_R5000
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
248 select SYS_SUPPORTS_LITTLE_ENDIAN
251 bool "Loongson family of machines"
252 select SYS_SUPPORTS_ZBOOT
254 This enables the support of Loongson family of machines.
256 Loongson is a family of general-purpose MIPS-compatible CPUs.
257 developed at Institute of Computing Technology (ICT),
258 Chinese Academy of Sciences (CAS) in the People's Republic
259 of China. The chief architect is Professor Weiwu Hu.
262 bool "MIPS Malta board"
263 select ARCH_MAY_HAVE_PC_FDC
268 select DMA_NONCOHERENT
269 select GENERIC_ISA_DMA
275 select MIPS_BOARDS_GEN
277 select MIPS_CPU_SCACHE
278 select PCI_GT64XXX_PCI0
281 select SYS_HAS_CPU_MIPS32_R1
282 select SYS_HAS_CPU_MIPS32_R2
283 select SYS_HAS_CPU_MIPS64_R1
284 select SYS_HAS_CPU_NEVADA
285 select SYS_HAS_CPU_RM7000
286 select SYS_HAS_EARLY_PRINTK
287 select SYS_SUPPORTS_32BIT_KERNEL
288 select SYS_SUPPORTS_64BIT_KERNEL
289 select SYS_SUPPORTS_BIG_ENDIAN
290 select SYS_SUPPORTS_LITTLE_ENDIAN
291 select SYS_SUPPORTS_MIPS_CMP
292 select SYS_SUPPORTS_MULTITHREADING
293 select SYS_SUPPORTS_SMARTMIPS
294 select SYS_SUPPORTS_ZBOOT
296 This enables support for the MIPS Technologies Malta evaluation
300 bool 'MIPS simulator (MIPSsim)'
303 select DMA_NONCOHERENT
304 select SYS_HAS_EARLY_PRINTK
307 select SYS_HAS_CPU_MIPS32_R1
308 select SYS_HAS_CPU_MIPS32_R2
309 select SYS_HAS_EARLY_PRINTK
310 select SYS_SUPPORTS_32BIT_KERNEL
311 select SYS_SUPPORTS_BIG_ENDIAN
312 select SYS_SUPPORTS_MULTITHREADING
313 select SYS_SUPPORTS_LITTLE_ENDIAN
315 This option enables support for MIPS Technologies MIPSsim software
319 bool "NEC EMMA2RH Mark-eins board"
323 This enables support for the NEC Electronics Mark-eins boards.
326 bool "NEC VR4100 series based machines"
329 select SYS_HAS_CPU_VR41XX
330 select ARCH_REQUIRE_GPIOLIB
333 bool "NXP STB220 board"
336 Support for NXP Semiconductors STB220 Development Board.
343 Support for NXP Semiconductors STB225 Development Board.
346 bool "NXP PNX8550 based JBS board"
348 select SYS_SUPPORTS_LITTLE_ENDIAN
350 config PNX8550_STB810
351 bool "NXP PNX8550 based STB810 board"
353 select SYS_SUPPORTS_LITTLE_ENDIAN
356 bool "PMC-Sierra MSP chipsets"
357 depends on EXPERIMENTAL
360 select DMA_NONCOHERENT
362 select NO_EXCEPT_FILL
364 select SYS_HAS_CPU_MIPS32_R1
365 select SYS_HAS_CPU_MIPS32_R2
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_BIG_ENDIAN
370 select SERIAL_8250_CONSOLE
372 This adds support for the PMC-Sierra family of Multi-Service
373 Processor System-On-A-Chips. These parts include a number
374 of integrated peripherals, interfaces and DSPs in addition to
375 a variety of MIPS cores.
378 bool "PMC-Sierra Yosemite eval board"
387 select SYS_HAS_CPU_RM9000
388 select SYS_HAS_EARLY_PRINTK
389 select SYS_SUPPORTS_32BIT_KERNEL
390 select SYS_SUPPORTS_64BIT_KERNEL
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_HIGHMEM
393 select SYS_SUPPORTS_SMP
395 Yosemite is an evaluation board for the RM9000x2 processor
396 manufactured by PMC-Sierra.
402 select CPU_MIPSR2_IRQ_VI
403 select CPU_MIPSR2_IRQ_EI
405 select DMA_NONCOHERENT
407 select SYS_HAS_EARLY_PRINTK
408 select SYS_HAS_CPU_MIPS32_R2
409 select SYS_SUPPORTS_32BIT_KERNEL
410 select SYS_SUPPORTS_BIG_ENDIAN
411 select SYS_SUPPORTS_HIGHMEM
412 select USB_OHCI_LITTLE_ENDIAN
414 This enables support for the Cisco PowerTV Platform.
417 bool "SGI IP22 (Indy/Indigo2)"
423 select DEFAULT_SGI_PARTITION
424 select DMA_NONCOHERENT
428 select IP22_CPU_SCACHE
430 select GENERIC_ISA_DMA_SUPPORT_BROKEN
432 select SGI_HAS_INDYDOG
438 select SYS_HAS_CPU_R4X00
439 select SYS_HAS_CPU_R5000
441 # Disable EARLY_PRINTK for now since it leads to overwritten prom
442 # memory during early boot on some machines.
444 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
445 # for a more details discussion
447 # select SYS_HAS_EARLY_PRINTK
448 select SYS_SUPPORTS_32BIT_KERNEL
449 select SYS_SUPPORTS_64BIT_KERNEL
450 select SYS_SUPPORTS_BIG_ENDIAN
452 This are the SGI Indy, Challenge S and Indigo2, as well as certain
453 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
454 that runs on these, say Y here.
457 bool "SGI IP27 (Origin200/2000)"
461 select DEFAULT_SGI_PARTITION
463 select SYS_HAS_EARLY_PRINTK
465 select NR_CPUS_DEFAULT_64
466 select SYS_HAS_CPU_R10000
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_NUMA
470 select SYS_SUPPORTS_SMP
472 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
473 workstations. To compile a Linux kernel that runs on these, say Y
477 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
478 depends on EXPERIMENTAL
484 select DEFAULT_SGI_PARTITION
485 select DMA_NONCOHERENT
486 select GENERIC_ISA_DMA_SUPPORT_BROKEN
492 select SGI_HAS_INDYDOG
498 select SYS_HAS_CPU_R10000
500 # Disable EARLY_PRINTK for now since it leads to overwritten prom
501 # memory during early boot on some machines.
503 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
504 # for a more details discussion
506 # select SYS_HAS_EARLY_PRINTK
507 select SYS_SUPPORTS_64BIT_KERNEL
508 select SYS_SUPPORTS_BIG_ENDIAN
510 This is the SGI Indigo2 with R10000 processor. To compile a Linux
511 kernel that runs on these, say Y here.
520 select DMA_NONCOHERENT
523 select R5000_CPU_SCACHE
524 select RM7000_CPU_SCACHE
525 select SYS_HAS_CPU_R5000
526 select SYS_HAS_CPU_R10000 if BROKEN
527 select SYS_HAS_CPU_RM7000
528 select SYS_HAS_CPU_NEVADA
529 select SYS_SUPPORTS_64BIT_KERNEL
530 select SYS_SUPPORTS_BIG_ENDIAN
532 If you want this kernel to run on SGI O2 workstation, say Y here.
535 bool "Sibyte BCM91120C-CRhine"
536 depends on EXPERIMENTAL
539 select SIBYTE_BCM1120
541 select SYS_HAS_CPU_SB1
542 select SYS_SUPPORTS_BIG_ENDIAN
543 select SYS_SUPPORTS_LITTLE_ENDIAN
546 bool "Sibyte BCM91120x-Carmel"
547 depends on EXPERIMENTAL
550 select SIBYTE_BCM1120
552 select SYS_HAS_CPU_SB1
553 select SYS_SUPPORTS_BIG_ENDIAN
554 select SYS_SUPPORTS_LITTLE_ENDIAN
557 bool "Sibyte BCM91125C-CRhone"
558 depends on EXPERIMENTAL
561 select SIBYTE_BCM1125
563 select SYS_HAS_CPU_SB1
564 select SYS_SUPPORTS_BIG_ENDIAN
565 select SYS_SUPPORTS_HIGHMEM
566 select SYS_SUPPORTS_LITTLE_ENDIAN
569 bool "Sibyte BCM91125E-Rhone"
570 depends on EXPERIMENTAL
573 select SIBYTE_BCM1125H
575 select SYS_HAS_CPU_SB1
576 select SYS_SUPPORTS_BIG_ENDIAN
577 select SYS_SUPPORTS_LITTLE_ENDIAN
580 bool "Sibyte BCM91250A-SWARM"
583 select HAVE_PATA_PLATFORM
584 select NR_CPUS_DEFAULT_2
587 select SYS_HAS_CPU_SB1
588 select SYS_SUPPORTS_BIG_ENDIAN
589 select SYS_SUPPORTS_HIGHMEM
590 select SYS_SUPPORTS_LITTLE_ENDIAN
591 select ZONE_DMA32 if 64BIT
593 config SIBYTE_LITTLESUR
594 bool "Sibyte BCM91250C2-LittleSur"
595 depends on EXPERIMENTAL
598 select HAVE_PATA_PLATFORM
599 select NR_CPUS_DEFAULT_2
602 select SYS_HAS_CPU_SB1
603 select SYS_SUPPORTS_BIG_ENDIAN
604 select SYS_SUPPORTS_HIGHMEM
605 select SYS_SUPPORTS_LITTLE_ENDIAN
607 config SIBYTE_SENTOSA
608 bool "Sibyte BCM91250E-Sentosa"
609 depends on EXPERIMENTAL
612 select NR_CPUS_DEFAULT_2
615 select SYS_HAS_CPU_SB1
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_LITTLE_ENDIAN
620 bool "Sibyte BCM91480B-BigSur"
623 select NR_CPUS_DEFAULT_4
624 select SIBYTE_BCM1x80
626 select SYS_HAS_CPU_SB1
627 select SYS_SUPPORTS_BIG_ENDIAN
628 select SYS_SUPPORTS_HIGHMEM
629 select SYS_SUPPORTS_LITTLE_ENDIAN
630 select ZONE_DMA32 if 64BIT
633 bool "SNI RM200/300/400"
634 select ARC if CPU_LITTLE_ENDIAN
635 select ARC32 if CPU_LITTLE_ENDIAN
636 select SNIPROM if CPU_BIG_ENDIAN
637 select ARCH_MAY_HAVE_PC_FDC
641 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
642 select DMA_NONCOHERENT
643 select GENERIC_ISA_DMA
650 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
651 select SYS_HAS_CPU_R4X00
652 select SYS_HAS_CPU_R5000
653 select SYS_HAS_CPU_R10000
654 select R5000_CPU_SCACHE
655 select SYS_HAS_EARLY_PRINTK
656 select SYS_SUPPORTS_32BIT_KERNEL
657 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_HIGHMEM
660 select SYS_SUPPORTS_LITTLE_ENDIAN
662 The SNI RM200/300/400 are MIPS-based machines manufactured by
663 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
664 Technology and now in turn merged with Fujitsu. Say Y here to
665 support this machine type.
668 bool "Toshiba TX39 series based machines"
671 bool "Toshiba TX49 series based machines"
673 config MIKROTIK_RB532
674 bool "Mikrotik RB532 boards"
677 select DMA_NONCOHERENT
680 select SYS_HAS_CPU_MIPS32_R1
681 select SYS_SUPPORTS_32BIT_KERNEL
682 select SYS_SUPPORTS_LITTLE_ENDIAN
685 select ARCH_REQUIRE_GPIOLIB
687 Support the Mikrotik(tm) RouterBoard 532 series,
688 based on the IDT RC32434 SoC.
691 bool "Wind River PPMC board"
696 select DMA_NONCOHERENT
698 select PCI_GT64XXX_PCI0
700 select SYS_HAS_CPU_MIPS32_R1
701 select SYS_HAS_CPU_MIPS32_R2
702 select SYS_HAS_CPU_MIPS64_R1
703 select SYS_HAS_CPU_NEVADA
704 select SYS_HAS_CPU_RM7000
705 select SYS_SUPPORTS_32BIT_KERNEL
706 select SYS_SUPPORTS_64BIT_KERNEL
707 select SYS_SUPPORTS_BIG_ENDIAN
708 select SYS_SUPPORTS_LITTLE_ENDIAN
710 This enables support for the Wind River MIPS32 4KC PPMC evaluation
711 board, which is based on GT64120 bridge chip.
713 config CAVIUM_OCTEON_SIMULATOR
714 bool "Cavium Networks Octeon Simulator"
716 select 64BIT_PHYS_ADDR
718 select SYS_SUPPORTS_64BIT_KERNEL
719 select SYS_SUPPORTS_BIG_ENDIAN
720 select SYS_SUPPORTS_HIGHMEM
721 select SYS_SUPPORTS_HOTPLUG_CPU
722 select SYS_HAS_CPU_CAVIUM_OCTEON
724 The Octeon simulator is software performance model of the Cavium
725 Octeon Processor. It supports simulating Octeon processors on x86
728 config CAVIUM_OCTEON_REFERENCE_BOARD
729 bool "Cavium Networks Octeon reference board"
731 select 64BIT_PHYS_ADDR
733 select SYS_SUPPORTS_64BIT_KERNEL
734 select SYS_SUPPORTS_BIG_ENDIAN
735 select SYS_SUPPORTS_HIGHMEM
736 select SYS_SUPPORTS_HOTPLUG_CPU
737 select SYS_HAS_EARLY_PRINTK
738 select SYS_HAS_CPU_CAVIUM_OCTEON
741 select ARCH_SUPPORTS_MSI
743 select USB_ARCH_HAS_OHCI
744 select USB_ARCH_HAS_EHCI
746 This option supports all of the Octeon reference boards from Cavium
747 Networks. It builds a kernel that dynamically determines the Octeon
748 CPU type and supports all known board reference implementations.
749 Some of the supported boards are:
756 Say Y here for most Octeon reference boards.
759 bool "Netlogic XLR/XLS based systems"
760 depends on EXPERIMENTAL
764 select SYS_HAS_CPU_XLR
765 select SYS_SUPPORTS_SMP
768 select SYS_SUPPORTS_32BIT_KERNEL
769 select SYS_SUPPORTS_64BIT_KERNEL
770 select 64BIT_PHYS_ADDR
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
774 select NR_CPUS_DEFAULT_32
778 select ZONE_DMA if 64BIT
780 select SYS_HAS_EARLY_PRINTK
782 Support for systems based on Netlogic XLR and XLS processors.
783 Say Y here if you have a XLR or XLS based board.
787 source "arch/mips/alchemy/Kconfig"
788 source "arch/mips/ath79/Kconfig"
789 source "arch/mips/bcm63xx/Kconfig"
790 source "arch/mips/jazz/Kconfig"
791 source "arch/mips/jz4740/Kconfig"
792 source "arch/mips/lantiq/Kconfig"
793 source "arch/mips/lasat/Kconfig"
794 source "arch/mips/pmc-sierra/Kconfig"
795 source "arch/mips/powertv/Kconfig"
796 source "arch/mips/sgi-ip27/Kconfig"
797 source "arch/mips/sibyte/Kconfig"
798 source "arch/mips/txx9/Kconfig"
799 source "arch/mips/vr41xx/Kconfig"
800 source "arch/mips/cavium-octeon/Kconfig"
801 source "arch/mips/loongson/Kconfig"
802 source "arch/mips/netlogic/Kconfig"
806 config RWSEM_GENERIC_SPINLOCK
810 config RWSEM_XCHGADD_ALGORITHM
813 config ARCH_HAS_ILOG2_U32
817 config ARCH_HAS_ILOG2_U64
821 config ARCH_SUPPORTS_OPROFILE
823 default y if !MIPS_MT_SMTC
825 config GENERIC_HWEIGHT
829 config GENERIC_CALIBRATE_DELAY
833 config GENERIC_CLOCKEVENTS
837 config GENERIC_CMOS_UPDATE
841 config SCHED_OMIT_FRAME_POINTER
846 # Select some configuration options automatically based on user selections.
851 config ARCH_MAY_HAVE_PC_FDC
900 select ARCH_REQUIRE_GPIOLIB
906 config ARCH_DMA_ADDR_T_64BIT
907 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
912 config DMA_NONCOHERENT
914 select NEED_DMA_MAP_STATE
916 config NEED_DMA_MAP_STATE
919 config SYS_HAS_EARLY_PRINTK
923 bool "Support for hot-pluggable CPUs"
924 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
926 Say Y here to allow turning CPUs off and on. CPUs can be
927 controlled through /sys/devices/system/cpu.
928 (Note: power management support will enable this option
929 automatically on SMP systems. )
930 Say N if you want to disable CPU hotplug.
932 config SYS_SUPPORTS_HOTPLUG_CPU
947 config MIPS_DISABLE_OBSOLETE_IDE
959 config GENERIC_ISA_DMA
961 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
964 config GENERIC_ISA_DMA_SUPPORT_BROKEN
966 select GENERIC_ISA_DMA
975 # Endianess selection. Sufficiently obscure so many users don't know what to
976 # answer,so we try hard to limit the available choices. Also the use of a
977 # choice statement should be more obvious to the user.
980 prompt "Endianess selection"
982 Some MIPS machines can be configured for either little or big endian
983 byte order. These modes require different kernels and a different
984 Linux distribution. In general there is one preferred byteorder for a
985 particular system but some systems are just as commonly used in the
986 one or the other endianness.
988 config CPU_BIG_ENDIAN
990 depends on SYS_SUPPORTS_BIG_ENDIAN
992 config CPU_LITTLE_ENDIAN
994 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1002 config SYS_SUPPORTS_APM_EMULATION
1005 config SYS_SUPPORTS_BIG_ENDIAN
1008 config SYS_SUPPORTS_LITTLE_ENDIAN
1011 config SYS_SUPPORTS_HUGETLBFS
1013 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1040 config MIPS_BOARDS_GEN
1043 config PCI_GT64XXX_PCI0
1046 config NO_EXCEPT_FILL
1051 select SERIAL_RM9000
1057 select DMA_NONCOHERENT
1059 select SWAP_IO_SPACE
1060 select SYS_HAS_CPU_R5500
1061 select SYS_SUPPORTS_32BIT_KERNEL
1062 select SYS_SUPPORTS_64BIT_KERNEL
1063 select SYS_SUPPORTS_BIG_ENDIAN
1070 select DMA_NONCOHERENT
1071 select SYS_HAS_CPU_MIPS32_R2
1072 select SYS_SUPPORTS_32BIT_KERNEL
1073 select SYS_SUPPORTS_LITTLE_ENDIAN
1074 select SYS_SUPPORTS_BIG_ENDIAN
1076 select CPU_MIPSR2_IRQ_VI
1088 select DMA_NONCOHERENT
1090 select SYS_HAS_CPU_MIPS32_R1
1091 select SYS_HAS_EARLY_PRINTK
1092 select SYS_SUPPORTS_32BIT_KERNEL
1095 config SWAP_IO_SPACE
1098 config SERIAL_RM9000
1101 config SGI_HAS_INDYDOG
1113 config SGI_HAS_ZILOG
1116 config SGI_HAS_I8042
1119 config DEFAULT_SGI_PARTITION
1131 config MIPS_L1_CACHE_SHIFT
1133 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1134 default "6" if MIPS_CPU_SCACHE
1135 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1138 config HAVE_STD_PC_SERIAL_PORT
1142 bool "ARC console support"
1143 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1147 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1152 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1161 menu "CPU selection"
1167 config CPU_LOONGSON2E
1169 depends on SYS_HAS_CPU_LOONGSON2E
1170 select CPU_LOONGSON2
1172 The Loongson 2E processor implements the MIPS III instruction set
1173 with many extensions.
1175 It has an internal FPGA northbridge, which is compatible to
1178 config CPU_LOONGSON2F
1180 depends on SYS_HAS_CPU_LOONGSON2F
1181 select CPU_LOONGSON2
1183 select ARCH_REQUIRE_GPIOLIB
1185 The Loongson 2F processor implements the MIPS III instruction set
1186 with many extensions.
1188 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1189 have a similar programming interface with FPGA northbridge used in
1192 config CPU_MIPS32_R1
1193 bool "MIPS32 Release 1"
1194 depends on SYS_HAS_CPU_MIPS32_R1
1195 select CPU_HAS_PREFETCH
1196 select CPU_SUPPORTS_32BIT_KERNEL
1197 select CPU_SUPPORTS_HIGHMEM
1199 Choose this option to build a kernel for release 1 or later of the
1200 MIPS32 architecture. Most modern embedded systems with a 32-bit
1201 MIPS processor are based on a MIPS32 processor. If you know the
1202 specific type of processor in your system, choose those that one
1203 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1204 Release 2 of the MIPS32 architecture is available since several
1205 years so chances are you even have a MIPS32 Release 2 processor
1206 in which case you should choose CPU_MIPS32_R2 instead for better
1209 config CPU_MIPS32_R2
1210 bool "MIPS32 Release 2"
1211 depends on SYS_HAS_CPU_MIPS32_R2
1212 select CPU_HAS_PREFETCH
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_HIGHMEM
1216 Choose this option to build a kernel for release 2 or later of the
1217 MIPS32 architecture. Most modern embedded systems with a 32-bit
1218 MIPS processor are based on a MIPS32 processor. If you know the
1219 specific type of processor in your system, choose those that one
1220 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1222 config CPU_MIPS64_R1
1223 bool "MIPS64 Release 1"
1224 depends on SYS_HAS_CPU_MIPS64_R1
1225 select CPU_HAS_PREFETCH
1226 select CPU_SUPPORTS_32BIT_KERNEL
1227 select CPU_SUPPORTS_64BIT_KERNEL
1228 select CPU_SUPPORTS_HIGHMEM
1229 select CPU_SUPPORTS_HUGEPAGES
1231 Choose this option to build a kernel for release 1 or later of the
1232 MIPS64 architecture. Many modern embedded systems with a 64-bit
1233 MIPS processor are based on a MIPS64 processor. If you know the
1234 specific type of processor in your system, choose those that one
1235 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1236 Release 2 of the MIPS64 architecture is available since several
1237 years so chances are you even have a MIPS64 Release 2 processor
1238 in which case you should choose CPU_MIPS64_R2 instead for better
1241 config CPU_MIPS64_R2
1242 bool "MIPS64 Release 2"
1243 depends on SYS_HAS_CPU_MIPS64_R2
1244 select CPU_HAS_PREFETCH
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_64BIT_KERNEL
1247 select CPU_SUPPORTS_HIGHMEM
1248 select CPU_SUPPORTS_HUGEPAGES
1250 Choose this option to build a kernel for release 2 or later of the
1251 MIPS64 architecture. Many modern embedded systems with a 64-bit
1252 MIPS processor are based on a MIPS64 processor. If you know the
1253 specific type of processor in your system, choose those that one
1254 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1258 depends on SYS_HAS_CPU_R3000
1260 select CPU_SUPPORTS_32BIT_KERNEL
1261 select CPU_SUPPORTS_HIGHMEM
1263 Please make sure to pick the right CPU type. Linux/MIPS is not
1264 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1265 *not* work on R4000 machines and vice versa. However, since most
1266 of the supported machines have an R4000 (or similar) CPU, R4x00
1267 might be a safe bet. If the resulting kernel does not work,
1268 try to recompile with R3000.
1272 depends on SYS_HAS_CPU_TX39XX
1273 select CPU_SUPPORTS_32BIT_KERNEL
1277 depends on SYS_HAS_CPU_VR41XX
1278 select CPU_SUPPORTS_32BIT_KERNEL
1279 select CPU_SUPPORTS_64BIT_KERNEL
1281 The options selects support for the NEC VR4100 series of processors.
1282 Only choose this option if you have one of these processors as a
1283 kernel built with this option will not run on any other type of
1284 processor or vice versa.
1288 depends on SYS_HAS_CPU_R4300
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_64BIT_KERNEL
1292 MIPS Technologies R4300-series processors.
1296 depends on SYS_HAS_CPU_R4X00
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1300 MIPS Technologies R4000-series processors other than 4300, including
1301 the R4000, R4400, R4600, and 4700.
1305 depends on SYS_HAS_CPU_TX49XX
1306 select CPU_HAS_PREFETCH
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_64BIT_KERNEL
1312 depends on SYS_HAS_CPU_R5000
1313 select CPU_SUPPORTS_32BIT_KERNEL
1314 select CPU_SUPPORTS_64BIT_KERNEL
1316 MIPS Technologies R5000-series processors other than the Nevada.
1320 depends on SYS_HAS_CPU_R5432
1321 select CPU_SUPPORTS_32BIT_KERNEL
1322 select CPU_SUPPORTS_64BIT_KERNEL
1326 depends on SYS_HAS_CPU_R5500
1327 select CPU_SUPPORTS_32BIT_KERNEL
1328 select CPU_SUPPORTS_64BIT_KERNEL
1329 select CPU_SUPPORTS_HUGEPAGES
1331 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1336 depends on EXPERIMENTAL
1337 depends on SYS_HAS_CPU_R6000
1338 select CPU_SUPPORTS_32BIT_KERNEL
1340 MIPS Technologies R6000 and R6000A series processors. Note these
1341 processors are extremely rare and the support for them is incomplete.
1345 depends on SYS_HAS_CPU_NEVADA
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_64BIT_KERNEL
1349 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1353 depends on EXPERIMENTAL
1354 depends on SYS_HAS_CPU_R8000
1355 select CPU_HAS_PREFETCH
1356 select CPU_SUPPORTS_64BIT_KERNEL
1358 MIPS Technologies R8000 processors. Note these processors are
1359 uncommon and the support for them is incomplete.
1363 depends on SYS_HAS_CPU_R10000
1364 select CPU_HAS_PREFETCH
1365 select CPU_SUPPORTS_32BIT_KERNEL
1366 select CPU_SUPPORTS_64BIT_KERNEL
1367 select CPU_SUPPORTS_HIGHMEM
1369 MIPS Technologies R10000-series processors.
1373 depends on SYS_HAS_CPU_RM7000
1374 select CPU_HAS_PREFETCH
1375 select CPU_SUPPORTS_32BIT_KERNEL
1376 select CPU_SUPPORTS_64BIT_KERNEL
1377 select CPU_SUPPORTS_HIGHMEM
1381 depends on SYS_HAS_CPU_RM9000
1382 select CPU_HAS_PREFETCH
1383 select CPU_SUPPORTS_32BIT_KERNEL
1384 select CPU_SUPPORTS_64BIT_KERNEL
1385 select CPU_SUPPORTS_HIGHMEM
1386 select WEAK_ORDERING
1390 depends on SYS_HAS_CPU_SB1
1391 select CPU_SUPPORTS_32BIT_KERNEL
1392 select CPU_SUPPORTS_64BIT_KERNEL
1393 select CPU_SUPPORTS_HIGHMEM
1394 select WEAK_ORDERING
1396 config CPU_CAVIUM_OCTEON
1397 bool "Cavium Octeon processor"
1398 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1399 select CPU_HAS_PREFETCH
1400 select CPU_SUPPORTS_64BIT_KERNEL
1401 select SYS_SUPPORTS_SMP
1402 select NR_CPUS_DEFAULT_16
1403 select WEAK_ORDERING
1404 select CPU_SUPPORTS_HIGHMEM
1405 select CPU_SUPPORTS_HUGEPAGES
1407 The Cavium Octeon processor is a highly integrated chip containing
1408 many ethernet hardware widgets for networking tasks. The processor
1409 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1410 Full details can be found at http://www.caviumnetworks.com.
1412 config CPU_BMIPS3300
1414 depends on SYS_HAS_CPU_BMIPS3300
1415 select DMA_NONCOHERENT
1417 select SWAP_IO_SPACE
1418 select SYS_SUPPORTS_32BIT_KERNEL
1419 select WEAK_ORDERING
1421 Broadcom BMIPS3300 processors.
1423 config CPU_BMIPS4350
1425 depends on SYS_HAS_CPU_BMIPS4350
1426 select CPU_SUPPORTS_32BIT_KERNEL
1427 select DMA_NONCOHERENT
1429 select SWAP_IO_SPACE
1430 select SYS_SUPPORTS_SMP
1431 select SYS_SUPPORTS_HOTPLUG_CPU
1432 select WEAK_ORDERING
1434 Broadcom BMIPS4350 ("VIPER") processors.
1436 config CPU_BMIPS4380
1438 depends on SYS_HAS_CPU_BMIPS4380
1439 select CPU_SUPPORTS_32BIT_KERNEL
1440 select DMA_NONCOHERENT
1442 select SWAP_IO_SPACE
1443 select SYS_SUPPORTS_SMP
1444 select SYS_SUPPORTS_HOTPLUG_CPU
1445 select WEAK_ORDERING
1447 Broadcom BMIPS4380 processors.
1449 config CPU_BMIPS5000
1451 depends on SYS_HAS_CPU_BMIPS5000
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_HIGHMEM
1454 select DMA_NONCOHERENT
1456 select SWAP_IO_SPACE
1457 select SYS_SUPPORTS_SMP
1458 select SYS_SUPPORTS_HOTPLUG_CPU
1459 select WEAK_ORDERING
1461 Broadcom BMIPS5000 processors.
1464 bool "Netlogic XLR SoC"
1465 depends on SYS_HAS_CPU_XLR
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select WEAK_ORDERING
1470 select WEAK_REORDERING_BEYOND_LLSC
1471 select CPU_SUPPORTS_HUGEPAGES
1473 Netlogic Microsystems XLR/XLS processors.
1477 config CPU_NOP_WORKAROUNDS
1480 config CPU_JUMP_WORKAROUNDS
1483 config CPU_LOONGSON2F_WORKAROUNDS
1484 bool "Loongson 2F Workarounds"
1486 select CPU_NOP_WORKAROUNDS
1487 select CPU_JUMP_WORKAROUNDS
1489 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1490 require workarounds. Without workarounds the system may hang
1491 unexpectedly. For more information please refer to the gas
1492 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1494 Loongson 2F03 and later have fixed these issues and no workarounds
1495 are needed. The workarounds have no significant side effect on them
1496 but may decrease the performance of the system so this option should
1497 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1500 If unsure, please say Y.
1501 endif # CPU_LOONGSON2F
1503 config SYS_SUPPORTS_ZBOOT
1505 select HAVE_KERNEL_GZIP
1506 select HAVE_KERNEL_BZIP2
1507 select HAVE_KERNEL_LZMA
1508 select HAVE_KERNEL_LZO
1510 config SYS_SUPPORTS_ZBOOT_UART16550
1512 select SYS_SUPPORTS_ZBOOT
1514 config CPU_LOONGSON2
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1518 select CPU_SUPPORTS_HIGHMEM
1520 config SYS_HAS_CPU_LOONGSON2E
1523 config SYS_HAS_CPU_LOONGSON2F
1525 select CPU_SUPPORTS_CPUFREQ
1526 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1527 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1529 config SYS_HAS_CPU_MIPS32_R1
1532 config SYS_HAS_CPU_MIPS32_R2
1535 config SYS_HAS_CPU_MIPS64_R1
1538 config SYS_HAS_CPU_MIPS64_R2
1541 config SYS_HAS_CPU_R3000
1544 config SYS_HAS_CPU_TX39XX
1547 config SYS_HAS_CPU_VR41XX
1550 config SYS_HAS_CPU_R4300
1553 config SYS_HAS_CPU_R4X00
1556 config SYS_HAS_CPU_TX49XX
1559 config SYS_HAS_CPU_R5000
1562 config SYS_HAS_CPU_R5432
1565 config SYS_HAS_CPU_R5500
1568 config SYS_HAS_CPU_R6000
1571 config SYS_HAS_CPU_NEVADA
1574 config SYS_HAS_CPU_R8000
1577 config SYS_HAS_CPU_R10000
1580 config SYS_HAS_CPU_RM7000
1583 config SYS_HAS_CPU_RM9000
1586 config SYS_HAS_CPU_SB1
1589 config SYS_HAS_CPU_CAVIUM_OCTEON
1592 config SYS_HAS_CPU_BMIPS3300
1595 config SYS_HAS_CPU_BMIPS4350
1598 config SYS_HAS_CPU_BMIPS4380
1601 config SYS_HAS_CPU_BMIPS5000
1604 config SYS_HAS_CPU_XLR
1608 # CPU may reorder R->R, R->W, W->R, W->W
1609 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1611 config WEAK_ORDERING
1615 # CPU may reorder reads and writes beyond LL/SC
1616 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1618 config WEAK_REORDERING_BEYOND_LLSC
1623 # These two indicate any level of the MIPS32 and MIPS64 architecture
1627 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1631 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1634 # These two indicate the revision of the architecture, either Release 1 or Release 2
1638 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1642 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1644 config SYS_SUPPORTS_32BIT_KERNEL
1646 config SYS_SUPPORTS_64BIT_KERNEL
1648 config CPU_SUPPORTS_32BIT_KERNEL
1650 config CPU_SUPPORTS_64BIT_KERNEL
1652 config CPU_SUPPORTS_CPUFREQ
1654 config CPU_SUPPORTS_ADDRWINCFG
1656 config CPU_SUPPORTS_HUGEPAGES
1658 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1660 config MIPS_PGD_C0_CONTEXT
1662 default y if 64BIT && CPU_MIPSR2
1665 # Set to y for ptrace access to watch registers.
1667 config HARDWARE_WATCHPOINTS
1669 default y if CPU_MIPSR1 || CPU_MIPSR2
1675 prompt "Kernel code model"
1677 You should only select this option if you have a workload that
1678 actually benefits from 64-bit processing or if your machine has
1679 large memory. You will only be presented a single option in this
1680 menu if your system does not support both 32-bit and 64-bit kernels.
1683 bool "32-bit kernel"
1684 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1687 Select this option if you want to build a 32-bit kernel.
1689 bool "64-bit kernel"
1690 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1691 select HAVE_SYSCALL_WRAPPERS
1693 Select this option if you want to build a 64-bit kernel.
1698 prompt "Kernel page size"
1699 default PAGE_SIZE_4KB
1701 config PAGE_SIZE_4KB
1703 depends on !CPU_LOONGSON2
1705 This option select the standard 4kB Linux page size. On some
1706 R3000-family processors this is the only available page size. Using
1707 4kB page size will minimize memory consumption and is therefore
1708 recommended for low memory systems.
1710 config PAGE_SIZE_8KB
1712 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1714 Using 8kB page size will result in higher performance kernel at
1715 the price of higher memory consumption. This option is available
1716 only on R8000 and cnMIPS processors. Note that you will need a
1717 suitable Linux distribution to support this.
1719 config PAGE_SIZE_16KB
1721 depends on !CPU_R3000 && !CPU_TX39XX
1723 Using 16kB page size will result in higher performance kernel at
1724 the price of higher memory consumption. This option is available on
1725 all non-R3000 family processors. Note that you will need a suitable
1726 Linux distribution to support this.
1728 config PAGE_SIZE_32KB
1730 depends on CPU_CAVIUM_OCTEON
1732 Using 32kB page size will result in higher performance kernel at
1733 the price of higher memory consumption. This option is available
1734 only on cnMIPS cores. Note that you will need a suitable Linux
1735 distribution to support this.
1737 config PAGE_SIZE_64KB
1739 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1741 Using 64kB page size will result in higher performance kernel at
1742 the price of higher memory consumption. This option is available on
1743 all non-R3000 family processor. Not that at the time of this
1744 writing this option is still high experimental.
1748 config FORCE_MAX_ZONEORDER
1749 int "Maximum zone order"
1750 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1751 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1752 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1753 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1757 The kernel memory allocator divides physically contiguous memory
1758 blocks into "zones", where each zone is a power of two number of
1759 pages. This option selects the largest power of two that the kernel
1760 keeps in the memory allocator. If you need to allocate very large
1761 blocks of physically contiguous memory, then you may need to
1762 increase this value.
1764 This config option is actually maximum order plus one. For example,
1765 a value of 11 means that the largest free memory block is 2^10 pages.
1767 The page size is not necessarily 4KB. Keep this in mind
1768 when choosing a value for this option.
1773 config IP22_CPU_SCACHE
1778 # Support for a MIPS32 / MIPS64 style S-caches
1780 config MIPS_CPU_SCACHE
1784 config R5000_CPU_SCACHE
1788 config RM7000_CPU_SCACHE
1792 config SIBYTE_DMA_PAGEOPS
1793 bool "Use DMA to clear/copy pages"
1796 Instead of using the CPU to zero and copy pages, use a Data Mover
1797 channel. These DMA channels are otherwise unused by the standard
1798 SiByte Linux port. Seems to give a small performance benefit.
1800 config CPU_HAS_PREFETCH
1804 prompt "MIPS MT options"
1806 config MIPS_MT_DISABLED
1807 bool "Disable multithreading support."
1809 Use this option if your workload can't take advantage of
1810 MIPS hardware multithreading support. On systems that don't have
1811 the option of an MT-enabled processor this option will be the only
1812 option in this menu.
1815 bool "Use 1 TC on each available VPE for SMP"
1816 depends on SYS_SUPPORTS_MULTITHREADING
1817 select CPU_MIPSR2_IRQ_VI
1818 select CPU_MIPSR2_IRQ_EI
1820 select NR_CPUS_DEFAULT_2
1822 select SYS_SUPPORTS_SCHED_SMT if SMP
1823 select SYS_SUPPORTS_SMP
1826 This is a kernel model which is known a VSMP but lately has been
1827 marketesed into SMVP.
1828 Virtual SMP uses the processor's VPEs to implement virtual
1829 processors. In currently available configuration of the 34K processor
1830 this allows for a dual processor. Both processors will share the same
1831 primary caches; each will obtain the half of the TLB for it's own
1832 exclusive use. For a layman this model can be described as similar to
1833 what Intel calls Hyperthreading.
1835 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1838 bool "SMTC: Use all TCs on all VPEs for SMP"
1839 depends on CPU_MIPS32_R2
1840 #depends on CPU_MIPS64_R2 # once there is hardware ...
1841 depends on SYS_SUPPORTS_MULTITHREADING
1842 select CPU_MIPSR2_IRQ_VI
1843 select CPU_MIPSR2_IRQ_EI
1845 select NR_CPUS_DEFAULT_8
1847 select SYS_SUPPORTS_SMP
1850 This is a kernel model which is known a SMTC or lately has been
1851 marketesed into SMVP.
1852 is presenting the available TC's of the core as processors to Linux.
1853 On currently available 34K processors this means a Linux system will
1854 see up to 5 processors. The implementation of the SMTC kernel differs
1855 significantly from VSMP and cannot efficiently coexist in the same
1856 kernel binary so the choice between VSMP and SMTC is a compile time
1859 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1867 bool "SMT (multithreading) scheduler support"
1868 depends on SYS_SUPPORTS_SCHED_SMT
1871 SMT scheduler support improves the CPU scheduler's decision making
1872 when dealing with MIPS MT enabled cores at a cost of slightly
1873 increased overhead in some places. If unsure say N here.
1875 config SYS_SUPPORTS_SCHED_SMT
1879 config SYS_SUPPORTS_MULTITHREADING
1882 config MIPS_MT_FPAFF
1883 bool "Dynamic FPU affinity for FP-intensive threads"
1885 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1887 config MIPS_VPE_LOADER
1888 bool "VPE loader support."
1889 depends on SYS_SUPPORTS_MULTITHREADING
1890 select CPU_MIPSR2_IRQ_VI
1891 select CPU_MIPSR2_IRQ_EI
1894 Includes a loader for loading an elf relocatable object
1895 onto another VPE and running it.
1897 config MIPS_MT_SMTC_IM_BACKSTOP
1898 bool "Use per-TC register bits as backstop for inhibited IM bits"
1899 depends on MIPS_MT_SMTC
1902 To support multiple TC microthreads acting as "CPUs" within
1903 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1904 during interrupt handling. To support legacy drivers and interrupt
1905 controller management code, SMTC has a "backstop" to track and
1906 if necessary restore the interrupt mask. This has some performance
1907 impact on interrupt service overhead.
1909 config MIPS_MT_SMTC_IRQAFF
1910 bool "Support IRQ affinity API"
1911 depends on MIPS_MT_SMTC
1914 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1915 for SMTC Linux kernel. Requires platform support, of which
1916 an example can be found in the MIPS kernel i8259 and Malta
1917 platform code. Adds some overhead to interrupt dispatch, and
1918 should be used only if you know what you are doing.
1920 config MIPS_VPE_LOADER_TOM
1921 bool "Load VPE program into memory hidden from linux"
1922 depends on MIPS_VPE_LOADER
1925 The loader can use memory that is present but has been hidden from
1926 Linux using the kernel command line option "mem=xxMB". It's up to
1927 you to ensure the amount you put in the option and the space your
1928 program requires is less or equal to the amount physically present.
1930 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1931 config MIPS_VPE_APSP_API
1932 bool "Enable support for AP/SP API (RTLX)"
1933 depends on MIPS_VPE_LOADER
1936 config MIPS_APSP_KSPD
1938 depends on MIPS_VPE_APSP_API
1941 KSPD is a kernel daemon that accepts syscall requests from the SP
1942 side, actions them and returns the results. It also handles the
1943 "exit" syscall notifying other kernel modules the SP program is
1944 exiting. You probably want to say yes here.
1947 bool "MIPS CMP framework support"
1948 depends on SYS_SUPPORTS_MIPS_CMP
1950 select SYS_SUPPORTS_SMP
1951 select SYS_SUPPORTS_SCHED_SMT if SMP
1952 select WEAK_ORDERING
1955 This is a placeholder option for the GCMP work. It will need to
1956 be handled differently...
1958 config SB1_PASS_1_WORKAROUNDS
1960 depends on CPU_SB1_PASS_1
1963 config SB1_PASS_2_WORKAROUNDS
1965 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1968 config SB1_PASS_2_1_WORKAROUNDS
1970 depends on CPU_SB1 && CPU_SB1_PASS_2
1973 config 64BIT_PHYS_ADDR
1976 config ARCH_PHYS_ADDR_T_64BIT
1977 def_bool 64BIT_PHYS_ADDR
1979 config CPU_HAS_SMARTMIPS
1980 depends on SYS_SUPPORTS_SMARTMIPS
1981 bool "Support for the SmartMIPS ASE"
1983 SmartMIPS is a extension of the MIPS32 architecture aimed at
1984 increased security at both hardware and software level for
1985 smartcards. Enabling this option will allow proper use of the
1986 SmartMIPS instructions by Linux applications. However a kernel with
1987 this option will not work on a MIPS core without SmartMIPS core. If
1988 you don't know you probably don't have SmartMIPS and should say N
1995 # Vectored interrupt mode is an R2 feature
1997 config CPU_MIPSR2_IRQ_VI
2001 # Extended interrupt mode is an R2 feature
2003 config CPU_MIPSR2_IRQ_EI
2008 depends on !CPU_R3000
2011 config GENERIC_CLOCKEVENTS_BROADCAST
2017 config CPU_DADDI_WORKAROUNDS
2020 config CPU_R4000_WORKAROUNDS
2022 select CPU_R4400_WORKAROUNDS
2024 config CPU_R4400_WORKAROUNDS
2028 # - Highmem only makes sense for the 32-bit kernel.
2029 # - The current highmem code will only work properly on physically indexed
2030 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2031 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2032 # moment we protect the user and offer the highmem option only on machines
2033 # where it's known to be safe. This will not offer highmem on a few systems
2034 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2035 # indexed CPUs but we're playing safe.
2036 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2037 # know they might have memory configurations that could make use of highmem
2041 bool "High Memory Support"
2042 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2044 config CPU_SUPPORTS_HIGHMEM
2047 config SYS_SUPPORTS_HIGHMEM
2050 config SYS_SUPPORTS_SMARTMIPS
2053 config ARCH_FLATMEM_ENABLE
2055 depends on !NUMA && !CPU_LOONGSON2
2057 config ARCH_DISCONTIGMEM_ENABLE
2059 default y if SGI_IP27
2061 Say Y to support efficient handling of discontiguous physical memory,
2062 for architectures which are either NUMA (Non-Uniform Memory Access)
2063 or have huge holes in the physical address space for other reasons.
2064 See <file:Documentation/vm/numa> for more.
2066 config ARCH_POPULATES_NODE_MAP
2069 config ARCH_SPARSEMEM_ENABLE
2071 select SPARSEMEM_STATIC
2075 depends on SYS_SUPPORTS_NUMA
2077 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2078 Access). This option improves performance on systems with more
2079 than two nodes; on two node systems it is generally better to
2080 leave it disabled; on single node systems disable this option
2083 config SYS_SUPPORTS_NUMA
2089 depends on NEED_MULTIPLE_NODES
2091 config HW_PERF_EVENTS
2092 bool "Enable hardware performance counter support for perf events"
2093 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2096 Enable hardware performance counter support for perf events. If
2097 disabled, perf events will use software events only.
2102 bool "Multi-Processing support"
2103 depends on SYS_SUPPORTS_SMP
2105 select USE_GENERIC_SMP_HELPERS
2107 This enables support for systems with more than one CPU. If you have
2108 a system with only one CPU, like most personal computers, say N. If
2109 you have a system with more than one CPU, say Y.
2111 If you say N here, the kernel will run on single and multiprocessor
2112 machines, but will use only one CPU of a multiprocessor machine. If
2113 you say Y here, the kernel will run on many, but not all,
2114 singleprocessor machines. On a singleprocessor machine, the kernel
2115 will run faster if you say N here.
2117 People using multiprocessor machines who say Y here should also say
2118 Y to "Enhanced Real Time Clock Support", below.
2120 See also the SMP-HOWTO available at
2121 <http://www.tldp.org/docs.html#howto>.
2123 If you don't know what to do here, say N.
2128 config SYS_SUPPORTS_MIPS_CMP
2131 config SYS_SUPPORTS_SMP
2134 config NR_CPUS_DEFAULT_1
2137 config NR_CPUS_DEFAULT_2
2140 config NR_CPUS_DEFAULT_4
2143 config NR_CPUS_DEFAULT_8
2146 config NR_CPUS_DEFAULT_16
2149 config NR_CPUS_DEFAULT_32
2152 config NR_CPUS_DEFAULT_64
2156 int "Maximum number of CPUs (2-64)"
2157 range 1 64 if NR_CPUS_DEFAULT_1
2159 default "1" if NR_CPUS_DEFAULT_1
2160 default "2" if NR_CPUS_DEFAULT_2
2161 default "4" if NR_CPUS_DEFAULT_4
2162 default "8" if NR_CPUS_DEFAULT_8
2163 default "16" if NR_CPUS_DEFAULT_16
2164 default "32" if NR_CPUS_DEFAULT_32
2165 default "64" if NR_CPUS_DEFAULT_64
2167 This allows you to specify the maximum number of CPUs which this
2168 kernel will support. The maximum supported value is 32 for 32-bit
2169 kernel and 64 for 64-bit kernels; the minimum value which makes
2170 sense is 1 for Qemu (useful only for kernel debugging purposes)
2171 and 2 for all others.
2173 This is purely to save memory - each supported CPU adds
2174 approximately eight kilobytes to the kernel image. For best
2175 performance should round up your number of processors to the next
2178 source "kernel/time/Kconfig"
2181 # Timer Interrupt Frequency Configuration
2185 prompt "Timer frequency"
2188 Allows the configuration of the timer frequency.
2191 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2194 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2197 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2200 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2203 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2206 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2209 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2213 config SYS_SUPPORTS_48HZ
2216 config SYS_SUPPORTS_100HZ
2219 config SYS_SUPPORTS_128HZ
2222 config SYS_SUPPORTS_250HZ
2225 config SYS_SUPPORTS_256HZ
2228 config SYS_SUPPORTS_1000HZ
2231 config SYS_SUPPORTS_1024HZ
2234 config SYS_SUPPORTS_ARBIT_HZ
2236 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2237 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2238 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2239 !SYS_SUPPORTS_1024HZ
2244 default 100 if HZ_100
2245 default 128 if HZ_128
2246 default 250 if HZ_250
2247 default 256 if HZ_256
2248 default 1000 if HZ_1000
2249 default 1024 if HZ_1024
2251 source "kernel/Kconfig.preempt"
2253 config MIPS_INSANE_LARGE
2254 bool "Support for large 64-bit configurations"
2255 depends on CPU_R10000 && 64BIT
2257 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2258 previous 64-bit processors which only supported 40 bit / 1TB. If you
2259 need processes of more than 1TB virtual address space, say Y here.
2260 This will result in additional memory usage, so it is not
2261 recommended for normal users.
2264 bool "Kexec system call (EXPERIMENTAL)"
2265 depends on EXPERIMENTAL
2267 kexec is a system call that implements the ability to shutdown your
2268 current kernel, and to start another kernel. It is like a reboot
2269 but it is independent of the system firmware. And like a reboot
2270 you can start any kernel with it, not just Linux.
2272 The name comes from the similarity to the exec system call.
2274 It is an ongoing process to be certain the hardware in a machine
2275 is properly shutdown, so do not be surprised if this code does not
2276 initially work for you. It may help to enable device hotplugging
2277 support. As of this writing the exact hardware interface is
2278 strongly in flux, so no good recommendation can be made.
2281 bool "Enable seccomp to safely compute untrusted bytecode"
2285 This kernel feature is useful for number crunching applications
2286 that may need to compute untrusted bytecode during their
2287 execution. By using pipes or other transports made available to
2288 the process as file descriptors supporting the read/write
2289 syscalls, it's possible to isolate those applications in
2290 their own address space using seccomp. Once seccomp is
2291 enabled via /proc/<pid>/seccomp, it cannot be disabled
2292 and the task is only allowed to execute a few safe syscalls
2293 defined by each seccomp mode.
2295 If unsure, say Y. Only embedded should say N here.
2298 bool "Flattened Device Tree support"
2300 select OF_EARLY_FLATTREE
2302 Include support for flattened device tree machine descriptions.
2306 config LOCKDEP_SUPPORT
2310 config STACKTRACE_SUPPORT
2314 source "init/Kconfig"
2316 source "kernel/Kconfig.freezer"
2318 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2326 bool "Support for PCI controller"
2327 depends on HW_HAS_PCI
2330 Find out whether you have a PCI motherboard. PCI is the name of a
2331 bus system, i.e. the way the CPU talks to the other stuff inside
2332 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2338 source "drivers/pci/Kconfig"
2341 # ISA support is now enabled via select. Too many systems still have the one
2342 # or other ISA chip on the board that users don't know about so don't expect
2343 # users to choose the right thing ...
2350 depends on HW_HAS_EISA
2352 select GENERIC_ISA_DMA
2354 The Extended Industry Standard Architecture (EISA) bus was
2355 developed as an open alternative to the IBM MicroChannel bus.
2357 The EISA bus provided some of the features of the IBM MicroChannel
2358 bus while maintaining backward compatibility with cards made for
2359 the older ISA bus. The EISA bus saw limited use between 1988 and
2360 1995 when it was made obsolete by the PCI bus.
2362 Say Y here if you are building a kernel for an EISA-based machine.
2366 source "drivers/eisa/Kconfig"
2369 bool "TURBOchannel support"
2370 depends on MACH_DECSTATION
2372 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2373 processors. TURBOchannel programming specifications are available
2375 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2377 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2378 Linux driver support status is documented at:
2379 <http://www.linux-mips.org/wiki/DECstation>
2382 # bool "Access.Bus support"
2392 select MIPS_EXTERNAL_TIMER
2397 source "drivers/pcmcia/Kconfig"
2399 source "drivers/pci/hotplug/Kconfig"
2402 bool "RapidIO support"
2406 If you say Y here, the kernel will include drivers and
2407 infrastructure code to support RapidIO interconnect devices.
2409 source "drivers/rapidio/Kconfig"
2413 menu "Executable file formats"
2415 source "fs/Kconfig.binfmt"
2420 config MIPS32_COMPAT
2421 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2424 Select this option if you want Linux/MIPS 32-bit binary
2425 compatibility. Since all software available for Linux/MIPS is
2426 currently 32-bit you should say Y here.
2430 depends on MIPS32_COMPAT
2433 config SYSVIPC_COMPAT
2435 depends on COMPAT && SYSVIPC
2439 bool "Kernel support for o32 binaries"
2440 depends on MIPS32_COMPAT
2442 Select this option if you want to run o32 binaries. These are pure
2443 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2444 existing binaries are in this format.
2449 bool "Kernel support for n32 binaries"
2450 depends on MIPS32_COMPAT
2452 Select this option if you want to run n32 binaries. These are
2453 64-bit binaries using 32-bit quantities for addressing and certain
2454 data that would normally be 64-bit. They are used in special
2461 default y if MIPS32_O32 || MIPS32_N32
2465 menu "Power management options"
2467 config ARCH_HIBERNATION_POSSIBLE
2469 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2471 config ARCH_SUSPEND_POSSIBLE
2473 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2475 source "kernel/power/Kconfig"
2479 source "arch/mips/kernel/cpufreq/Kconfig"
2481 source "net/Kconfig"
2483 source "drivers/Kconfig"
2487 source "arch/mips/Kconfig.debug"
2489 source "security/Kconfig"
2491 source "crypto/Kconfig"
2493 menuconfig VIRTUALIZATION
2494 bool "Virtualization"
2497 Say Y here to get to see options for using your Linux host to run other
2498 operating systems inside virtual machines (guests).
2499 This option alone does not add any kernel code.
2501 If you say N, all options in this submenu will be skipped and disabled.
2505 source drivers/virtio/Kconfig
2507 endif # VIRTUALIZATION
2509 source "lib/Kconfig"