4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select RTC_LIB if !MACH_LOONGSON
20 select GENERIC_ATOMIC64 if !64BIT
22 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_HARDIRQS
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select HAVE_ARCH_JUMP_LABEL
28 menu "Machine selection"
38 bool "Alchemy processor based machines"
39 select 64BIT_PHYS_ADDR
43 select SYS_HAS_CPU_MIPS32_R1
44 select SYS_SUPPORTS_32BIT_KERNEL
45 select SYS_SUPPORTS_APM_EMULATION
47 select ARCH_WANT_OPTIONAL_GPIOLIB
48 select SYS_SUPPORTS_ZBOOT
51 bool "Texas Instruments AR7"
53 select DMA_NONCOHERENT
59 select SYS_HAS_CPU_MIPS32_R1
60 select SYS_HAS_EARLY_PRINTK
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_LITTLE_ENDIAN
63 select SYS_SUPPORTS_ZBOOT_UART16550
64 select ARCH_REQUIRE_GPIOLIB
68 Support for the Texas Instruments AR7 System-on-a-Chip
69 family: TNETD7100, 7200 and 7300.
72 bool "Atheros AR71XX/AR724X/AR913X based boards"
73 select ARCH_REQUIRE_GPIOLIB
77 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R2
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_BIG_ENDIAN
85 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
88 bool "Broadcom BCM47XX based boards"
91 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SSB_DRIVER_MIPS
99 select SSB_DRIVER_EXTIF
101 select SSB_B43_PCI_BRIDGE if PCI
102 select SSB_PCICORE_HOSTMODE if PCI
104 select SYS_HAS_EARLY_PRINTK
107 Support for BCM47XX based boards
110 bool "Broadcom BCM63XX based boards"
113 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_HAS_EARLY_PRINTK
120 select ARCH_REQUIRE_GPIOLIB
122 Support for BCM63XX based boards
129 select DMA_NONCOHERENT
135 select PCI_GT64XXX_PCI0
137 select SYS_HAS_CPU_NEVADA
138 select SYS_HAS_EARLY_PRINTK
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_64BIT_KERNEL
141 select SYS_SUPPORTS_LITTLE_ENDIAN
143 config MACH_DECSTATION
150 select CPU_DADDI_WORKAROUNDS if 64BIT
151 select CPU_R4000_WORKAROUNDS if 64BIT
152 select CPU_R4400_WORKAROUNDS if 64BIT
153 select DMA_NONCOHERENT
156 select SYS_HAS_CPU_R3000
157 select SYS_HAS_CPU_R4X00
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_128HZ
162 select SYS_SUPPORTS_256HZ
163 select SYS_SUPPORTS_1024HZ
165 This enables support for DEC's MIPS based workstations. For details
166 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
167 DECstation porting pages on <http://decstation.unix-ag.org/>.
169 If you have one of the following DECstation Models you definitely
170 want to choose R4xx0 for the CPU Type:
177 otherwise choose R3000.
180 bool "Jazz family of machines"
183 select ARCH_MAY_HAVE_PC_FDC
186 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
187 select GENERIC_ISA_DMA
192 select SYS_HAS_CPU_R4X00
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
195 select SYS_SUPPORTS_100HZ
197 This a family of machines based on the MIPS R4030 chipset which was
198 used by several vendors to build RISC/os and Windows NT workstations.
199 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
200 Olivetti M700-10 workstations.
203 bool "Ingenic JZ4740 based machines"
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select DMA_NONCOHERENT
210 select ARCH_REQUIRE_GPIOLIB
211 select SYS_HAS_EARLY_PRINTK
216 bool "LASAT Networks platforms"
219 select DMA_NONCOHERENT
220 select SYS_HAS_EARLY_PRINTK
223 select PCI_GT64XXX_PCI0
225 select R5000_CPU_SCACHE
226 select SYS_HAS_CPU_R5000
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
229 select SYS_SUPPORTS_LITTLE_ENDIAN
232 bool "Loongson family of machines"
233 select SYS_SUPPORTS_ZBOOT
235 This enables the support of Loongson family of machines.
237 Loongson is a family of general-purpose MIPS-compatible CPUs.
238 developed at Institute of Computing Technology (ICT),
239 Chinese Academy of Sciences (CAS) in the People's Republic
240 of China. The chief architect is Professor Weiwu Hu.
243 bool "MIPS Malta board"
244 select ARCH_MAY_HAVE_PC_FDC
249 select DMA_NONCOHERENT
250 select GENERIC_ISA_DMA
256 select MIPS_BOARDS_GEN
258 select MIPS_CPU_SCACHE
259 select PCI_GT64XXX_PCI0
262 select SYS_HAS_CPU_MIPS32_R1
263 select SYS_HAS_CPU_MIPS32_R2
264 select SYS_HAS_CPU_MIPS64_R1
265 select SYS_HAS_CPU_NEVADA
266 select SYS_HAS_CPU_RM7000
267 select SYS_HAS_EARLY_PRINTK
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_64BIT_KERNEL
270 select SYS_SUPPORTS_BIG_ENDIAN
271 select SYS_SUPPORTS_LITTLE_ENDIAN
272 select SYS_SUPPORTS_MIPS_CMP
273 select SYS_SUPPORTS_MULTITHREADING
274 select SYS_SUPPORTS_SMARTMIPS
275 select SYS_SUPPORTS_ZBOOT
277 This enables support for the MIPS Technologies Malta evaluation
281 bool 'MIPS simulator (MIPSsim)'
284 select DMA_NONCOHERENT
285 select SYS_HAS_EARLY_PRINTK
288 select SYS_HAS_CPU_MIPS32_R1
289 select SYS_HAS_CPU_MIPS32_R2
290 select SYS_HAS_EARLY_PRINTK
291 select SYS_SUPPORTS_32BIT_KERNEL
292 select SYS_SUPPORTS_BIG_ENDIAN
293 select SYS_SUPPORTS_MULTITHREADING
294 select SYS_SUPPORTS_LITTLE_ENDIAN
296 This option enables support for MIPS Technologies MIPSsim software
300 bool "NEC EMMA2RH Mark-eins board"
304 This enables support for the NEC Electronics Mark-eins boards.
307 bool "NEC VR4100 series based machines"
310 select SYS_HAS_CPU_VR41XX
311 select ARCH_REQUIRE_GPIOLIB
314 bool "NXP STB220 board"
317 Support for NXP Semiconductors STB220 Development Board.
324 Support for NXP Semiconductors STB225 Development Board.
327 bool "NXP PNX8550 based JBS board"
329 select SYS_SUPPORTS_LITTLE_ENDIAN
331 config PNX8550_STB810
332 bool "NXP PNX8550 based STB810 board"
334 select SYS_SUPPORTS_LITTLE_ENDIAN
337 bool "PMC-Sierra MSP chipsets"
338 depends on EXPERIMENTAL
341 select DMA_NONCOHERENT
343 select NO_EXCEPT_FILL
345 select SYS_HAS_CPU_MIPS32_R1
346 select SYS_HAS_CPU_MIPS32_R2
347 select SYS_SUPPORTS_32BIT_KERNEL
348 select SYS_SUPPORTS_BIG_ENDIAN
351 select SERIAL_8250_CONSOLE
353 This adds support for the PMC-Sierra family of Multi-Service
354 Processor System-On-A-Chips. These parts include a number
355 of integrated peripherals, interfaces and DSPs in addition to
356 a variety of MIPS cores.
359 bool "PMC-Sierra Yosemite eval board"
368 select SYS_HAS_CPU_RM9000
369 select SYS_HAS_EARLY_PRINTK
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_BIG_ENDIAN
373 select SYS_SUPPORTS_HIGHMEM
374 select SYS_SUPPORTS_SMP
376 Yosemite is an evaluation board for the RM9000x2 processor
377 manufactured by PMC-Sierra.
383 select CPU_MIPSR2_IRQ_VI
384 select CPU_MIPSR2_IRQ_EI
386 select DMA_NONCOHERENT
388 select SYS_HAS_EARLY_PRINTK
389 select SYS_HAS_CPU_MIPS32_R2
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_HIGHMEM
393 select USB_OHCI_LITTLE_ENDIAN
395 This enables support for the Cisco PowerTV Platform.
398 bool "SGI IP22 (Indy/Indigo2)"
404 select DEFAULT_SGI_PARTITION
405 select DMA_NONCOHERENT
409 select IP22_CPU_SCACHE
411 select GENERIC_ISA_DMA_SUPPORT_BROKEN
413 select SGI_HAS_INDYDOG
419 select SYS_HAS_CPU_R4X00
420 select SYS_HAS_CPU_R5000
422 # Disable EARLY_PRINTK for now since it leads to overwritten prom
423 # memory during early boot on some machines.
425 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
426 # for a more details discussion
428 # select SYS_HAS_EARLY_PRINTK
429 select SYS_SUPPORTS_32BIT_KERNEL
430 select SYS_SUPPORTS_64BIT_KERNEL
431 select SYS_SUPPORTS_BIG_ENDIAN
433 This are the SGI Indy, Challenge S and Indigo2, as well as certain
434 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
435 that runs on these, say Y here.
438 bool "SGI IP27 (Origin200/2000)"
442 select DEFAULT_SGI_PARTITION
444 select SYS_HAS_EARLY_PRINTK
446 select NR_CPUS_DEFAULT_64
447 select SYS_HAS_CPU_R10000
448 select SYS_SUPPORTS_64BIT_KERNEL
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_NUMA
451 select SYS_SUPPORTS_SMP
453 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
454 workstations. To compile a Linux kernel that runs on these, say Y
458 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
459 depends on EXPERIMENTAL
465 select DEFAULT_SGI_PARTITION
466 select DMA_NONCOHERENT
467 select GENERIC_ISA_DMA_SUPPORT_BROKEN
473 select SGI_HAS_INDYDOG
479 select SYS_HAS_CPU_R10000
481 # Disable EARLY_PRINTK for now since it leads to overwritten prom
482 # memory during early boot on some machines.
484 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
485 # for a more details discussion
487 # select SYS_HAS_EARLY_PRINTK
488 select SYS_SUPPORTS_64BIT_KERNEL
489 select SYS_SUPPORTS_BIG_ENDIAN
491 This is the SGI Indigo2 with R10000 processor. To compile a Linux
492 kernel that runs on these, say Y here.
501 select DMA_NONCOHERENT
504 select R5000_CPU_SCACHE
505 select RM7000_CPU_SCACHE
506 select SYS_HAS_CPU_R5000
507 select SYS_HAS_CPU_R10000 if BROKEN
508 select SYS_HAS_CPU_RM7000
509 select SYS_HAS_CPU_NEVADA
510 select SYS_SUPPORTS_64BIT_KERNEL
511 select SYS_SUPPORTS_BIG_ENDIAN
513 If you want this kernel to run on SGI O2 workstation, say Y here.
516 bool "Sibyte BCM91120C-CRhine"
517 depends on EXPERIMENTAL
520 select SIBYTE_BCM1120
522 select SYS_HAS_CPU_SB1
523 select SYS_SUPPORTS_BIG_ENDIAN
524 select SYS_SUPPORTS_LITTLE_ENDIAN
527 bool "Sibyte BCM91120x-Carmel"
528 depends on EXPERIMENTAL
531 select SIBYTE_BCM1120
533 select SYS_HAS_CPU_SB1
534 select SYS_SUPPORTS_BIG_ENDIAN
535 select SYS_SUPPORTS_LITTLE_ENDIAN
538 bool "Sibyte BCM91125C-CRhone"
539 depends on EXPERIMENTAL
542 select SIBYTE_BCM1125
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_HIGHMEM
547 select SYS_SUPPORTS_LITTLE_ENDIAN
550 bool "Sibyte BCM91125E-Rhone"
551 depends on EXPERIMENTAL
554 select SIBYTE_BCM1125H
556 select SYS_HAS_CPU_SB1
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_LITTLE_ENDIAN
561 bool "Sibyte BCM91250A-SWARM"
564 select HAVE_PATA_PLATFORM
565 select NR_CPUS_DEFAULT_2
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
572 select ZONE_DMA32 if 64BIT
574 config SIBYTE_LITTLESUR
575 bool "Sibyte BCM91250C2-LittleSur"
576 depends on EXPERIMENTAL
579 select HAVE_PATA_PLATFORM
580 select NR_CPUS_DEFAULT_2
583 select SYS_HAS_CPU_SB1
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_HIGHMEM
586 select SYS_SUPPORTS_LITTLE_ENDIAN
588 config SIBYTE_SENTOSA
589 bool "Sibyte BCM91250E-Sentosa"
590 depends on EXPERIMENTAL
593 select NR_CPUS_DEFAULT_2
596 select SYS_HAS_CPU_SB1
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_LITTLE_ENDIAN
601 bool "Sibyte BCM91480B-BigSur"
604 select NR_CPUS_DEFAULT_4
605 select SIBYTE_BCM1x80
607 select SYS_HAS_CPU_SB1
608 select SYS_SUPPORTS_BIG_ENDIAN
609 select SYS_SUPPORTS_HIGHMEM
610 select SYS_SUPPORTS_LITTLE_ENDIAN
611 select ZONE_DMA32 if 64BIT
614 bool "SNI RM200/300/400"
615 select ARC if CPU_LITTLE_ENDIAN
616 select ARC32 if CPU_LITTLE_ENDIAN
617 select SNIPROM if CPU_BIG_ENDIAN
618 select ARCH_MAY_HAVE_PC_FDC
622 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
623 select DMA_NONCOHERENT
624 select GENERIC_ISA_DMA
631 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
632 select SYS_HAS_CPU_R4X00
633 select SYS_HAS_CPU_R5000
634 select SYS_HAS_CPU_R10000
635 select R5000_CPU_SCACHE
636 select SYS_HAS_EARLY_PRINTK
637 select SYS_SUPPORTS_32BIT_KERNEL
638 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select SYS_SUPPORTS_HIGHMEM
641 select SYS_SUPPORTS_LITTLE_ENDIAN
643 The SNI RM200/300/400 are MIPS-based machines manufactured by
644 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
645 Technology and now in turn merged with Fujitsu. Say Y here to
646 support this machine type.
649 bool "Toshiba TX39 series based machines"
652 bool "Toshiba TX49 series based machines"
654 config MIKROTIK_RB532
655 bool "Mikrotik RB532 boards"
658 select DMA_NONCOHERENT
661 select SYS_HAS_CPU_MIPS32_R1
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_LITTLE_ENDIAN
666 select ARCH_REQUIRE_GPIOLIB
668 Support the Mikrotik(tm) RouterBoard 532 series,
669 based on the IDT RC32434 SoC.
672 bool "Wind River PPMC board"
677 select DMA_NONCOHERENT
679 select PCI_GT64XXX_PCI0
681 select SYS_HAS_CPU_MIPS32_R1
682 select SYS_HAS_CPU_MIPS32_R2
683 select SYS_HAS_CPU_MIPS64_R1
684 select SYS_HAS_CPU_NEVADA
685 select SYS_HAS_CPU_RM7000
686 select SYS_SUPPORTS_32BIT_KERNEL
687 select SYS_SUPPORTS_64BIT_KERNEL
688 select SYS_SUPPORTS_BIG_ENDIAN
689 select SYS_SUPPORTS_LITTLE_ENDIAN
691 This enables support for the Wind River MIPS32 4KC PPMC evaluation
692 board, which is based on GT64120 bridge chip.
694 config CAVIUM_OCTEON_SIMULATOR
695 bool "Cavium Networks Octeon Simulator"
697 select 64BIT_PHYS_ADDR
699 select SYS_SUPPORTS_64BIT_KERNEL
700 select SYS_SUPPORTS_BIG_ENDIAN
701 select SYS_SUPPORTS_HIGHMEM
702 select SYS_SUPPORTS_HOTPLUG_CPU
703 select SYS_HAS_CPU_CAVIUM_OCTEON
705 The Octeon simulator is software performance model of the Cavium
706 Octeon Processor. It supports simulating Octeon processors on x86
709 config CAVIUM_OCTEON_REFERENCE_BOARD
710 bool "Cavium Networks Octeon reference board"
712 select 64BIT_PHYS_ADDR
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_HIGHMEM
717 select SYS_SUPPORTS_HOTPLUG_CPU
718 select SYS_HAS_EARLY_PRINTK
719 select SYS_HAS_CPU_CAVIUM_OCTEON
722 select ARCH_SUPPORTS_MSI
724 select USB_ARCH_HAS_OHCI
725 select USB_ARCH_HAS_EHCI
727 This option supports all of the Octeon reference boards from Cavium
728 Networks. It builds a kernel that dynamically determines the Octeon
729 CPU type and supports all known board reference implementations.
730 Some of the supported boards are:
737 Say Y here for most Octeon reference boards.
741 source "arch/mips/alchemy/Kconfig"
742 source "arch/mips/ath79/Kconfig"
743 source "arch/mips/bcm63xx/Kconfig"
744 source "arch/mips/jazz/Kconfig"
745 source "arch/mips/jz4740/Kconfig"
746 source "arch/mips/lasat/Kconfig"
747 source "arch/mips/pmc-sierra/Kconfig"
748 source "arch/mips/powertv/Kconfig"
749 source "arch/mips/sgi-ip27/Kconfig"
750 source "arch/mips/sibyte/Kconfig"
751 source "arch/mips/txx9/Kconfig"
752 source "arch/mips/vr41xx/Kconfig"
753 source "arch/mips/cavium-octeon/Kconfig"
754 source "arch/mips/loongson/Kconfig"
758 config RWSEM_GENERIC_SPINLOCK
762 config RWSEM_XCHGADD_ALGORITHM
765 config ARCH_HAS_ILOG2_U32
769 config ARCH_HAS_ILOG2_U64
773 config ARCH_SUPPORTS_OPROFILE
775 default y if !MIPS_MT_SMTC
777 config GENERIC_FIND_NEXT_BIT
781 config GENERIC_FIND_BIT_LE
785 config GENERIC_HWEIGHT
789 config GENERIC_CALIBRATE_DELAY
793 config GENERIC_CLOCKEVENTS
797 config GENERIC_CMOS_UPDATE
801 config SCHED_OMIT_FRAME_POINTER
806 # Select some configuration options automatically based on user selections.
811 config ARCH_MAY_HAVE_PC_FDC
860 select ARCH_REQUIRE_GPIOLIB
866 config ARCH_DMA_ADDR_T_64BIT
867 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
872 config DMA_NONCOHERENT
874 select NEED_DMA_MAP_STATE
876 config NEED_DMA_MAP_STATE
879 config SYS_HAS_EARLY_PRINTK
883 bool "Support for hot-pluggable CPUs"
884 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
886 Say Y here to allow turning CPUs off and on. CPUs can be
887 controlled through /sys/devices/system/cpu.
888 (Note: power management support will enable this option
889 automatically on SMP systems. )
890 Say N if you want to disable CPU hotplug.
892 config SYS_SUPPORTS_HOTPLUG_CPU
907 config MIPS_DISABLE_OBSOLETE_IDE
919 config GENERIC_ISA_DMA
921 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
924 config GENERIC_ISA_DMA_SUPPORT_BROKEN
926 select GENERIC_ISA_DMA
935 # Endianess selection. Sufficiently obscure so many users don't know what to
936 # answer,so we try hard to limit the available choices. Also the use of a
937 # choice statement should be more obvious to the user.
940 prompt "Endianess selection"
942 Some MIPS machines can be configured for either little or big endian
943 byte order. These modes require different kernels and a different
944 Linux distribution. In general there is one preferred byteorder for a
945 particular system but some systems are just as commonly used in the
946 one or the other endianness.
948 config CPU_BIG_ENDIAN
950 depends on SYS_SUPPORTS_BIG_ENDIAN
952 config CPU_LITTLE_ENDIAN
954 depends on SYS_SUPPORTS_LITTLE_ENDIAN
962 config SYS_SUPPORTS_APM_EMULATION
965 config SYS_SUPPORTS_BIG_ENDIAN
968 config SYS_SUPPORTS_LITTLE_ENDIAN
971 config SYS_SUPPORTS_HUGETLBFS
973 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1000 config MIPS_BOARDS_GEN
1003 config PCI_GT64XXX_PCI0
1006 config NO_EXCEPT_FILL
1011 select SERIAL_RM9000
1017 select DMA_NONCOHERENT
1019 select SWAP_IO_SPACE
1020 select SYS_HAS_CPU_R5500
1021 select SYS_SUPPORTS_32BIT_KERNEL
1022 select SYS_SUPPORTS_64BIT_KERNEL
1023 select SYS_SUPPORTS_BIG_ENDIAN
1030 select DMA_NONCOHERENT
1031 select SYS_HAS_CPU_MIPS32_R2
1032 select SYS_SUPPORTS_32BIT_KERNEL
1033 select SYS_SUPPORTS_LITTLE_ENDIAN
1034 select SYS_SUPPORTS_BIG_ENDIAN
1036 select CPU_MIPSR2_IRQ_VI
1048 select DMA_NONCOHERENT
1050 select SYS_HAS_CPU_MIPS32_R1
1051 select SYS_HAS_EARLY_PRINTK
1052 select SYS_SUPPORTS_32BIT_KERNEL
1055 config SWAP_IO_SPACE
1058 config SERIAL_RM9000
1061 config SGI_HAS_INDYDOG
1073 config SGI_HAS_ZILOG
1076 config SGI_HAS_I8042
1079 config DEFAULT_SGI_PARTITION
1091 config MIPS_L1_CACHE_SHIFT
1093 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1094 default "6" if MIPS_CPU_SCACHE
1095 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1098 config HAVE_STD_PC_SERIAL_PORT
1102 bool "ARC console support"
1103 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1107 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1112 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1121 menu "CPU selection"
1127 config CPU_LOONGSON2E
1129 depends on SYS_HAS_CPU_LOONGSON2E
1130 select CPU_LOONGSON2
1132 The Loongson 2E processor implements the MIPS III instruction set
1133 with many extensions.
1135 It has an internal FPGA northbridge, which is compatible to
1138 config CPU_LOONGSON2F
1140 depends on SYS_HAS_CPU_LOONGSON2F
1141 select CPU_LOONGSON2
1143 select ARCH_REQUIRE_GPIOLIB
1145 The Loongson 2F processor implements the MIPS III instruction set
1146 with many extensions.
1148 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1149 have a similar programming interface with FPGA northbridge used in
1152 config CPU_MIPS32_R1
1153 bool "MIPS32 Release 1"
1154 depends on SYS_HAS_CPU_MIPS32_R1
1155 select CPU_HAS_PREFETCH
1156 select CPU_SUPPORTS_32BIT_KERNEL
1157 select CPU_SUPPORTS_HIGHMEM
1159 Choose this option to build a kernel for release 1 or later of the
1160 MIPS32 architecture. Most modern embedded systems with a 32-bit
1161 MIPS processor are based on a MIPS32 processor. If you know the
1162 specific type of processor in your system, choose those that one
1163 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1164 Release 2 of the MIPS32 architecture is available since several
1165 years so chances are you even have a MIPS32 Release 2 processor
1166 in which case you should choose CPU_MIPS32_R2 instead for better
1169 config CPU_MIPS32_R2
1170 bool "MIPS32 Release 2"
1171 depends on SYS_HAS_CPU_MIPS32_R2
1172 select CPU_HAS_PREFETCH
1173 select CPU_SUPPORTS_32BIT_KERNEL
1174 select CPU_SUPPORTS_HIGHMEM
1176 Choose this option to build a kernel for release 2 or later of the
1177 MIPS32 architecture. Most modern embedded systems with a 32-bit
1178 MIPS processor are based on a MIPS32 processor. If you know the
1179 specific type of processor in your system, choose those that one
1180 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1182 config CPU_MIPS64_R1
1183 bool "MIPS64 Release 1"
1184 depends on SYS_HAS_CPU_MIPS64_R1
1185 select CPU_HAS_PREFETCH
1186 select CPU_SUPPORTS_32BIT_KERNEL
1187 select CPU_SUPPORTS_64BIT_KERNEL
1188 select CPU_SUPPORTS_HIGHMEM
1189 select CPU_SUPPORTS_HUGEPAGES
1191 Choose this option to build a kernel for release 1 or later of the
1192 MIPS64 architecture. Many modern embedded systems with a 64-bit
1193 MIPS processor are based on a MIPS64 processor. If you know the
1194 specific type of processor in your system, choose those that one
1195 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1196 Release 2 of the MIPS64 architecture is available since several
1197 years so chances are you even have a MIPS64 Release 2 processor
1198 in which case you should choose CPU_MIPS64_R2 instead for better
1201 config CPU_MIPS64_R2
1202 bool "MIPS64 Release 2"
1203 depends on SYS_HAS_CPU_MIPS64_R2
1204 select CPU_HAS_PREFETCH
1205 select CPU_SUPPORTS_32BIT_KERNEL
1206 select CPU_SUPPORTS_64BIT_KERNEL
1207 select CPU_SUPPORTS_HIGHMEM
1208 select CPU_SUPPORTS_HUGEPAGES
1210 Choose this option to build a kernel for release 2 or later of the
1211 MIPS64 architecture. Many modern embedded systems with a 64-bit
1212 MIPS processor are based on a MIPS64 processor. If you know the
1213 specific type of processor in your system, choose those that one
1214 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1218 depends on SYS_HAS_CPU_R3000
1220 select CPU_SUPPORTS_32BIT_KERNEL
1221 select CPU_SUPPORTS_HIGHMEM
1223 Please make sure to pick the right CPU type. Linux/MIPS is not
1224 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1225 *not* work on R4000 machines and vice versa. However, since most
1226 of the supported machines have an R4000 (or similar) CPU, R4x00
1227 might be a safe bet. If the resulting kernel does not work,
1228 try to recompile with R3000.
1232 depends on SYS_HAS_CPU_TX39XX
1233 select CPU_SUPPORTS_32BIT_KERNEL
1237 depends on SYS_HAS_CPU_VR41XX
1238 select CPU_SUPPORTS_32BIT_KERNEL
1239 select CPU_SUPPORTS_64BIT_KERNEL
1241 The options selects support for the NEC VR4100 series of processors.
1242 Only choose this option if you have one of these processors as a
1243 kernel built with this option will not run on any other type of
1244 processor or vice versa.
1248 depends on SYS_HAS_CPU_R4300
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1252 MIPS Technologies R4300-series processors.
1256 depends on SYS_HAS_CPU_R4X00
1257 select CPU_SUPPORTS_32BIT_KERNEL
1258 select CPU_SUPPORTS_64BIT_KERNEL
1260 MIPS Technologies R4000-series processors other than 4300, including
1261 the R4000, R4400, R4600, and 4700.
1265 depends on SYS_HAS_CPU_TX49XX
1266 select CPU_HAS_PREFETCH
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1272 depends on SYS_HAS_CPU_R5000
1273 select CPU_SUPPORTS_32BIT_KERNEL
1274 select CPU_SUPPORTS_64BIT_KERNEL
1276 MIPS Technologies R5000-series processors other than the Nevada.
1280 depends on SYS_HAS_CPU_R5432
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_64BIT_KERNEL
1286 depends on SYS_HAS_CPU_R5500
1287 select CPU_SUPPORTS_32BIT_KERNEL
1288 select CPU_SUPPORTS_64BIT_KERNEL
1289 select CPU_SUPPORTS_HUGEPAGES
1291 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1296 depends on EXPERIMENTAL
1297 depends on SYS_HAS_CPU_R6000
1298 select CPU_SUPPORTS_32BIT_KERNEL
1300 MIPS Technologies R6000 and R6000A series processors. Note these
1301 processors are extremely rare and the support for them is incomplete.
1305 depends on SYS_HAS_CPU_NEVADA
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1309 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1313 depends on EXPERIMENTAL
1314 depends on SYS_HAS_CPU_R8000
1315 select CPU_HAS_PREFETCH
1316 select CPU_SUPPORTS_64BIT_KERNEL
1318 MIPS Technologies R8000 processors. Note these processors are
1319 uncommon and the support for them is incomplete.
1323 depends on SYS_HAS_CPU_R10000
1324 select CPU_HAS_PREFETCH
1325 select CPU_SUPPORTS_32BIT_KERNEL
1326 select CPU_SUPPORTS_64BIT_KERNEL
1327 select CPU_SUPPORTS_HIGHMEM
1329 MIPS Technologies R10000-series processors.
1333 depends on SYS_HAS_CPU_RM7000
1334 select CPU_HAS_PREFETCH
1335 select CPU_SUPPORTS_32BIT_KERNEL
1336 select CPU_SUPPORTS_64BIT_KERNEL
1337 select CPU_SUPPORTS_HIGHMEM
1341 depends on SYS_HAS_CPU_RM9000
1342 select CPU_HAS_PREFETCH
1343 select CPU_SUPPORTS_32BIT_KERNEL
1344 select CPU_SUPPORTS_64BIT_KERNEL
1345 select CPU_SUPPORTS_HIGHMEM
1346 select WEAK_ORDERING
1350 depends on SYS_HAS_CPU_SB1
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HIGHMEM
1354 select WEAK_ORDERING
1356 config CPU_CAVIUM_OCTEON
1357 bool "Cavium Octeon processor"
1358 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1359 select CPU_HAS_PREFETCH
1360 select CPU_SUPPORTS_64BIT_KERNEL
1361 select SYS_SUPPORTS_SMP
1362 select NR_CPUS_DEFAULT_16
1363 select WEAK_ORDERING
1364 select CPU_SUPPORTS_HIGHMEM
1365 select CPU_SUPPORTS_HUGEPAGES
1367 The Cavium Octeon processor is a highly integrated chip containing
1368 many ethernet hardware widgets for networking tasks. The processor
1369 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1370 Full details can be found at http://www.caviumnetworks.com.
1372 config CPU_BMIPS3300
1374 depends on SYS_HAS_CPU_BMIPS3300
1375 select DMA_NONCOHERENT
1377 select SWAP_IO_SPACE
1378 select SYS_SUPPORTS_32BIT_KERNEL
1379 select WEAK_ORDERING
1381 Broadcom BMIPS3300 processors.
1383 config CPU_BMIPS4350
1385 depends on SYS_HAS_CPU_BMIPS4350
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select DMA_NONCOHERENT
1389 select SWAP_IO_SPACE
1390 select SYS_SUPPORTS_SMP
1391 select SYS_SUPPORTS_HOTPLUG_CPU
1392 select WEAK_ORDERING
1394 Broadcom BMIPS4350 ("VIPER") processors.
1396 config CPU_BMIPS4380
1398 depends on SYS_HAS_CPU_BMIPS4380
1399 select CPU_SUPPORTS_32BIT_KERNEL
1400 select DMA_NONCOHERENT
1402 select SWAP_IO_SPACE
1403 select SYS_SUPPORTS_SMP
1404 select SYS_SUPPORTS_HOTPLUG_CPU
1405 select WEAK_ORDERING
1407 Broadcom BMIPS4380 processors.
1409 config CPU_BMIPS5000
1411 depends on SYS_HAS_CPU_BMIPS5000
1412 select CPU_SUPPORTS_32BIT_KERNEL
1413 select CPU_SUPPORTS_HIGHMEM
1414 select DMA_NONCOHERENT
1416 select SWAP_IO_SPACE
1417 select SYS_SUPPORTS_SMP
1418 select SYS_SUPPORTS_HOTPLUG_CPU
1419 select WEAK_ORDERING
1421 Broadcom BMIPS5000 processors.
1426 config CPU_NOP_WORKAROUNDS
1429 config CPU_JUMP_WORKAROUNDS
1432 config CPU_LOONGSON2F_WORKAROUNDS
1433 bool "Loongson 2F Workarounds"
1435 select CPU_NOP_WORKAROUNDS
1436 select CPU_JUMP_WORKAROUNDS
1438 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1439 require workarounds. Without workarounds the system may hang
1440 unexpectedly. For more information please refer to the gas
1441 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1443 Loongson 2F03 and later have fixed these issues and no workarounds
1444 are needed. The workarounds have no significant side effect on them
1445 but may decrease the performance of the system so this option should
1446 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1449 If unsure, please say Y.
1450 endif # CPU_LOONGSON2F
1452 config SYS_SUPPORTS_ZBOOT
1454 select HAVE_KERNEL_GZIP
1455 select HAVE_KERNEL_BZIP2
1456 select HAVE_KERNEL_LZMA
1457 select HAVE_KERNEL_LZO
1459 config SYS_SUPPORTS_ZBOOT_UART16550
1461 select SYS_SUPPORTS_ZBOOT
1463 config CPU_LOONGSON2
1465 select CPU_SUPPORTS_32BIT_KERNEL
1466 select CPU_SUPPORTS_64BIT_KERNEL
1467 select CPU_SUPPORTS_HIGHMEM
1469 config SYS_HAS_CPU_LOONGSON2E
1472 config SYS_HAS_CPU_LOONGSON2F
1474 select CPU_SUPPORTS_CPUFREQ
1475 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1476 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1478 config SYS_HAS_CPU_MIPS32_R1
1481 config SYS_HAS_CPU_MIPS32_R2
1484 config SYS_HAS_CPU_MIPS64_R1
1487 config SYS_HAS_CPU_MIPS64_R2
1490 config SYS_HAS_CPU_R3000
1493 config SYS_HAS_CPU_TX39XX
1496 config SYS_HAS_CPU_VR41XX
1499 config SYS_HAS_CPU_R4300
1502 config SYS_HAS_CPU_R4X00
1505 config SYS_HAS_CPU_TX49XX
1508 config SYS_HAS_CPU_R5000
1511 config SYS_HAS_CPU_R5432
1514 config SYS_HAS_CPU_R5500
1517 config SYS_HAS_CPU_R6000
1520 config SYS_HAS_CPU_NEVADA
1523 config SYS_HAS_CPU_R8000
1526 config SYS_HAS_CPU_R10000
1529 config SYS_HAS_CPU_RM7000
1532 config SYS_HAS_CPU_RM9000
1535 config SYS_HAS_CPU_SB1
1538 config SYS_HAS_CPU_CAVIUM_OCTEON
1541 config SYS_HAS_CPU_BMIPS3300
1544 config SYS_HAS_CPU_BMIPS4350
1547 config SYS_HAS_CPU_BMIPS4380
1550 config SYS_HAS_CPU_BMIPS5000
1554 # CPU may reorder R->R, R->W, W->R, W->W
1555 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1557 config WEAK_ORDERING
1561 # CPU may reorder reads and writes beyond LL/SC
1562 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1564 config WEAK_REORDERING_BEYOND_LLSC
1569 # These two indicate any level of the MIPS32 and MIPS64 architecture
1573 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1577 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1580 # These two indicate the revision of the architecture, either Release 1 or Release 2
1584 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1588 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1590 config SYS_SUPPORTS_32BIT_KERNEL
1592 config SYS_SUPPORTS_64BIT_KERNEL
1594 config CPU_SUPPORTS_32BIT_KERNEL
1596 config CPU_SUPPORTS_64BIT_KERNEL
1598 config CPU_SUPPORTS_CPUFREQ
1600 config CPU_SUPPORTS_ADDRWINCFG
1602 config CPU_SUPPORTS_HUGEPAGES
1604 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1606 config MIPS_PGD_C0_CONTEXT
1608 default y if 64BIT && CPU_MIPSR2
1611 # Set to y for ptrace access to watch registers.
1613 config HARDWARE_WATCHPOINTS
1615 default y if CPU_MIPSR1 || CPU_MIPSR2
1621 prompt "Kernel code model"
1623 You should only select this option if you have a workload that
1624 actually benefits from 64-bit processing or if your machine has
1625 large memory. You will only be presented a single option in this
1626 menu if your system does not support both 32-bit and 64-bit kernels.
1629 bool "32-bit kernel"
1630 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1633 Select this option if you want to build a 32-bit kernel.
1635 bool "64-bit kernel"
1636 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1637 select HAVE_SYSCALL_WRAPPERS
1639 Select this option if you want to build a 64-bit kernel.
1644 prompt "Kernel page size"
1645 default PAGE_SIZE_4KB
1647 config PAGE_SIZE_4KB
1649 depends on !CPU_LOONGSON2
1651 This option select the standard 4kB Linux page size. On some
1652 R3000-family processors this is the only available page size. Using
1653 4kB page size will minimize memory consumption and is therefore
1654 recommended for low memory systems.
1656 config PAGE_SIZE_8KB
1658 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1660 Using 8kB page size will result in higher performance kernel at
1661 the price of higher memory consumption. This option is available
1662 only on R8000 and cnMIPS processors. Note that you will need a
1663 suitable Linux distribution to support this.
1665 config PAGE_SIZE_16KB
1667 depends on !CPU_R3000 && !CPU_TX39XX
1669 Using 16kB page size will result in higher performance kernel at
1670 the price of higher memory consumption. This option is available on
1671 all non-R3000 family processors. Note that you will need a suitable
1672 Linux distribution to support this.
1674 config PAGE_SIZE_32KB
1676 depends on CPU_CAVIUM_OCTEON
1678 Using 32kB page size will result in higher performance kernel at
1679 the price of higher memory consumption. This option is available
1680 only on cnMIPS cores. Note that you will need a suitable Linux
1681 distribution to support this.
1683 config PAGE_SIZE_64KB
1685 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1687 Using 64kB page size will result in higher performance kernel at
1688 the price of higher memory consumption. This option is available on
1689 all non-R3000 family processor. Not that at the time of this
1690 writing this option is still high experimental.
1694 config FORCE_MAX_ZONEORDER
1695 int "Maximum zone order"
1696 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1697 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1698 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1699 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1703 The kernel memory allocator divides physically contiguous memory
1704 blocks into "zones", where each zone is a power of two number of
1705 pages. This option selects the largest power of two that the kernel
1706 keeps in the memory allocator. If you need to allocate very large
1707 blocks of physically contiguous memory, then you may need to
1708 increase this value.
1710 This config option is actually maximum order plus one. For example,
1711 a value of 11 means that the largest free memory block is 2^10 pages.
1713 The page size is not necessarily 4KB. Keep this in mind
1714 when choosing a value for this option.
1719 config IP22_CPU_SCACHE
1724 # Support for a MIPS32 / MIPS64 style S-caches
1726 config MIPS_CPU_SCACHE
1730 config R5000_CPU_SCACHE
1734 config RM7000_CPU_SCACHE
1738 config SIBYTE_DMA_PAGEOPS
1739 bool "Use DMA to clear/copy pages"
1742 Instead of using the CPU to zero and copy pages, use a Data Mover
1743 channel. These DMA channels are otherwise unused by the standard
1744 SiByte Linux port. Seems to give a small performance benefit.
1746 config CPU_HAS_PREFETCH
1750 prompt "MIPS MT options"
1752 config MIPS_MT_DISABLED
1753 bool "Disable multithreading support."
1755 Use this option if your workload can't take advantage of
1756 MIPS hardware multithreading support. On systems that don't have
1757 the option of an MT-enabled processor this option will be the only
1758 option in this menu.
1761 bool "Use 1 TC on each available VPE for SMP"
1762 depends on SYS_SUPPORTS_MULTITHREADING
1763 select CPU_MIPSR2_IRQ_VI
1764 select CPU_MIPSR2_IRQ_EI
1766 select NR_CPUS_DEFAULT_2
1768 select SYS_SUPPORTS_SCHED_SMT if SMP
1769 select SYS_SUPPORTS_SMP
1772 This is a kernel model which is known a VSMP but lately has been
1773 marketesed into SMVP.
1774 Virtual SMP uses the processor's VPEs to implement virtual
1775 processors. In currently available configuration of the 34K processor
1776 this allows for a dual processor. Both processors will share the same
1777 primary caches; each will obtain the half of the TLB for it's own
1778 exclusive use. For a layman this model can be described as similar to
1779 what Intel calls Hyperthreading.
1781 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1784 bool "SMTC: Use all TCs on all VPEs for SMP"
1785 depends on CPU_MIPS32_R2
1786 #depends on CPU_MIPS64_R2 # once there is hardware ...
1787 depends on SYS_SUPPORTS_MULTITHREADING
1788 select CPU_MIPSR2_IRQ_VI
1789 select CPU_MIPSR2_IRQ_EI
1791 select NR_CPUS_DEFAULT_8
1793 select SYS_SUPPORTS_SMP
1796 This is a kernel model which is known a SMTC or lately has been
1797 marketesed into SMVP.
1798 is presenting the available TC's of the core as processors to Linux.
1799 On currently available 34K processors this means a Linux system will
1800 see up to 5 processors. The implementation of the SMTC kernel differs
1801 significantly from VSMP and cannot efficiently coexist in the same
1802 kernel binary so the choice between VSMP and SMTC is a compile time
1805 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1813 bool "SMT (multithreading) scheduler support"
1814 depends on SYS_SUPPORTS_SCHED_SMT
1817 SMT scheduler support improves the CPU scheduler's decision making
1818 when dealing with MIPS MT enabled cores at a cost of slightly
1819 increased overhead in some places. If unsure say N here.
1821 config SYS_SUPPORTS_SCHED_SMT
1825 config SYS_SUPPORTS_MULTITHREADING
1828 config MIPS_MT_FPAFF
1829 bool "Dynamic FPU affinity for FP-intensive threads"
1831 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1833 config MIPS_VPE_LOADER
1834 bool "VPE loader support."
1835 depends on SYS_SUPPORTS_MULTITHREADING
1836 select CPU_MIPSR2_IRQ_VI
1837 select CPU_MIPSR2_IRQ_EI
1840 Includes a loader for loading an elf relocatable object
1841 onto another VPE and running it.
1843 config MIPS_MT_SMTC_IM_BACKSTOP
1844 bool "Use per-TC register bits as backstop for inhibited IM bits"
1845 depends on MIPS_MT_SMTC
1848 To support multiple TC microthreads acting as "CPUs" within
1849 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1850 during interrupt handling. To support legacy drivers and interrupt
1851 controller management code, SMTC has a "backstop" to track and
1852 if necessary restore the interrupt mask. This has some performance
1853 impact on interrupt service overhead.
1855 config MIPS_MT_SMTC_IRQAFF
1856 bool "Support IRQ affinity API"
1857 depends on MIPS_MT_SMTC
1860 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1861 for SMTC Linux kernel. Requires platform support, of which
1862 an example can be found in the MIPS kernel i8259 and Malta
1863 platform code. Adds some overhead to interrupt dispatch, and
1864 should be used only if you know what you are doing.
1866 config MIPS_VPE_LOADER_TOM
1867 bool "Load VPE program into memory hidden from linux"
1868 depends on MIPS_VPE_LOADER
1871 The loader can use memory that is present but has been hidden from
1872 Linux using the kernel command line option "mem=xxMB". It's up to
1873 you to ensure the amount you put in the option and the space your
1874 program requires is less or equal to the amount physically present.
1876 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1877 config MIPS_VPE_APSP_API
1878 bool "Enable support for AP/SP API (RTLX)"
1879 depends on MIPS_VPE_LOADER
1882 config MIPS_APSP_KSPD
1884 depends on MIPS_VPE_APSP_API
1887 KSPD is a kernel daemon that accepts syscall requests from the SP
1888 side, actions them and returns the results. It also handles the
1889 "exit" syscall notifying other kernel modules the SP program is
1890 exiting. You probably want to say yes here.
1893 bool "MIPS CMP framework support"
1894 depends on SYS_SUPPORTS_MIPS_CMP
1896 select SYS_SUPPORTS_SMP
1897 select SYS_SUPPORTS_SCHED_SMT if SMP
1898 select WEAK_ORDERING
1901 This is a placeholder option for the GCMP work. It will need to
1902 be handled differently...
1904 config SB1_PASS_1_WORKAROUNDS
1906 depends on CPU_SB1_PASS_1
1909 config SB1_PASS_2_WORKAROUNDS
1911 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1914 config SB1_PASS_2_1_WORKAROUNDS
1916 depends on CPU_SB1 && CPU_SB1_PASS_2
1919 config 64BIT_PHYS_ADDR
1922 config ARCH_PHYS_ADDR_T_64BIT
1923 def_bool 64BIT_PHYS_ADDR
1925 config CPU_HAS_SMARTMIPS
1926 depends on SYS_SUPPORTS_SMARTMIPS
1927 bool "Support for the SmartMIPS ASE"
1929 SmartMIPS is a extension of the MIPS32 architecture aimed at
1930 increased security at both hardware and software level for
1931 smartcards. Enabling this option will allow proper use of the
1932 SmartMIPS instructions by Linux applications. However a kernel with
1933 this option will not work on a MIPS core without SmartMIPS core. If
1934 you don't know you probably don't have SmartMIPS and should say N
1941 # Vectored interrupt mode is an R2 feature
1943 config CPU_MIPSR2_IRQ_VI
1947 # Extended interrupt mode is an R2 feature
1949 config CPU_MIPSR2_IRQ_EI
1954 depends on !CPU_R3000
1957 config GENERIC_CLOCKEVENTS_BROADCAST
1963 config CPU_DADDI_WORKAROUNDS
1966 config CPU_R4000_WORKAROUNDS
1968 select CPU_R4400_WORKAROUNDS
1970 config CPU_R4400_WORKAROUNDS
1974 # - Highmem only makes sense for the 32-bit kernel.
1975 # - The current highmem code will only work properly on physically indexed
1976 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1977 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1978 # moment we protect the user and offer the highmem option only on machines
1979 # where it's known to be safe. This will not offer highmem on a few systems
1980 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1981 # indexed CPUs but we're playing safe.
1982 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1983 # know they might have memory configurations that could make use of highmem
1987 bool "High Memory Support"
1988 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1990 config CPU_SUPPORTS_HIGHMEM
1993 config SYS_SUPPORTS_HIGHMEM
1996 config SYS_SUPPORTS_SMARTMIPS
1999 config ARCH_FLATMEM_ENABLE
2001 depends on !NUMA && !CPU_LOONGSON2
2003 config ARCH_DISCONTIGMEM_ENABLE
2005 default y if SGI_IP27
2007 Say Y to support efficient handling of discontiguous physical memory,
2008 for architectures which are either NUMA (Non-Uniform Memory Access)
2009 or have huge holes in the physical address space for other reasons.
2010 See <file:Documentation/vm/numa> for more.
2012 config ARCH_POPULATES_NODE_MAP
2015 config ARCH_SPARSEMEM_ENABLE
2017 select SPARSEMEM_STATIC
2021 depends on SYS_SUPPORTS_NUMA
2023 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2024 Access). This option improves performance on systems with more
2025 than two nodes; on two node systems it is generally better to
2026 leave it disabled; on single node systems disable this option
2029 config SYS_SUPPORTS_NUMA
2035 depends on NEED_MULTIPLE_NODES
2037 config HW_PERF_EVENTS
2038 bool "Enable hardware performance counter support for perf events"
2039 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2042 Enable hardware performance counter support for perf events. If
2043 disabled, perf events will use software events only.
2048 bool "Multi-Processing support"
2049 depends on SYS_SUPPORTS_SMP
2051 select USE_GENERIC_SMP_HELPERS
2053 This enables support for systems with more than one CPU. If you have
2054 a system with only one CPU, like most personal computers, say N. If
2055 you have a system with more than one CPU, say Y.
2057 If you say N here, the kernel will run on single and multiprocessor
2058 machines, but will use only one CPU of a multiprocessor machine. If
2059 you say Y here, the kernel will run on many, but not all,
2060 singleprocessor machines. On a singleprocessor machine, the kernel
2061 will run faster if you say N here.
2063 People using multiprocessor machines who say Y here should also say
2064 Y to "Enhanced Real Time Clock Support", below.
2066 See also the SMP-HOWTO available at
2067 <http://www.tldp.org/docs.html#howto>.
2069 If you don't know what to do here, say N.
2074 config SYS_SUPPORTS_MIPS_CMP
2077 config SYS_SUPPORTS_SMP
2080 config NR_CPUS_DEFAULT_1
2083 config NR_CPUS_DEFAULT_2
2086 config NR_CPUS_DEFAULT_4
2089 config NR_CPUS_DEFAULT_8
2092 config NR_CPUS_DEFAULT_16
2095 config NR_CPUS_DEFAULT_32
2098 config NR_CPUS_DEFAULT_64
2102 int "Maximum number of CPUs (2-64)"
2103 range 1 64 if NR_CPUS_DEFAULT_1
2105 default "1" if NR_CPUS_DEFAULT_1
2106 default "2" if NR_CPUS_DEFAULT_2
2107 default "4" if NR_CPUS_DEFAULT_4
2108 default "8" if NR_CPUS_DEFAULT_8
2109 default "16" if NR_CPUS_DEFAULT_16
2110 default "32" if NR_CPUS_DEFAULT_32
2111 default "64" if NR_CPUS_DEFAULT_64
2113 This allows you to specify the maximum number of CPUs which this
2114 kernel will support. The maximum supported value is 32 for 32-bit
2115 kernel and 64 for 64-bit kernels; the minimum value which makes
2116 sense is 1 for Qemu (useful only for kernel debugging purposes)
2117 and 2 for all others.
2119 This is purely to save memory - each supported CPU adds
2120 approximately eight kilobytes to the kernel image. For best
2121 performance should round up your number of processors to the next
2124 source "kernel/time/Kconfig"
2127 # Timer Interrupt Frequency Configuration
2131 prompt "Timer frequency"
2134 Allows the configuration of the timer frequency.
2137 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2140 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2143 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2146 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2149 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2152 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2155 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2159 config SYS_SUPPORTS_48HZ
2162 config SYS_SUPPORTS_100HZ
2165 config SYS_SUPPORTS_128HZ
2168 config SYS_SUPPORTS_250HZ
2171 config SYS_SUPPORTS_256HZ
2174 config SYS_SUPPORTS_1000HZ
2177 config SYS_SUPPORTS_1024HZ
2180 config SYS_SUPPORTS_ARBIT_HZ
2182 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2183 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2184 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2185 !SYS_SUPPORTS_1024HZ
2190 default 100 if HZ_100
2191 default 128 if HZ_128
2192 default 250 if HZ_250
2193 default 256 if HZ_256
2194 default 1000 if HZ_1000
2195 default 1024 if HZ_1024
2197 source "kernel/Kconfig.preempt"
2199 config MIPS_INSANE_LARGE
2200 bool "Support for large 64-bit configurations"
2201 depends on CPU_R10000 && 64BIT
2203 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2204 previous 64-bit processors which only supported 40 bit / 1TB. If you
2205 need processes of more than 1TB virtual address space, say Y here.
2206 This will result in additional memory usage, so it is not
2207 recommended for normal users.
2210 bool "Kexec system call (EXPERIMENTAL)"
2211 depends on EXPERIMENTAL
2213 kexec is a system call that implements the ability to shutdown your
2214 current kernel, and to start another kernel. It is like a reboot
2215 but it is independent of the system firmware. And like a reboot
2216 you can start any kernel with it, not just Linux.
2218 The name comes from the similarity to the exec system call.
2220 It is an ongoing process to be certain the hardware in a machine
2221 is properly shutdown, so do not be surprised if this code does not
2222 initially work for you. It may help to enable device hotplugging
2223 support. As of this writing the exact hardware interface is
2224 strongly in flux, so no good recommendation can be made.
2227 bool "Enable seccomp to safely compute untrusted bytecode"
2231 This kernel feature is useful for number crunching applications
2232 that may need to compute untrusted bytecode during their
2233 execution. By using pipes or other transports made available to
2234 the process as file descriptors supporting the read/write
2235 syscalls, it's possible to isolate those applications in
2236 their own address space using seccomp. Once seccomp is
2237 enabled via /proc/<pid>/seccomp, it cannot be disabled
2238 and the task is only allowed to execute a few safe syscalls
2239 defined by each seccomp mode.
2241 If unsure, say Y. Only embedded should say N here.
2244 bool "Flattened Device Tree support"
2246 select OF_EARLY_FLATTREE
2248 Include support for flattened device tree machine descriptions.
2252 config LOCKDEP_SUPPORT
2256 config STACKTRACE_SUPPORT
2260 source "init/Kconfig"
2262 source "kernel/Kconfig.freezer"
2264 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2272 bool "Support for PCI controller"
2273 depends on HW_HAS_PCI
2276 Find out whether you have a PCI motherboard. PCI is the name of a
2277 bus system, i.e. the way the CPU talks to the other stuff inside
2278 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2284 source "drivers/pci/Kconfig"
2287 # ISA support is now enabled via select. Too many systems still have the one
2288 # or other ISA chip on the board that users don't know about so don't expect
2289 # users to choose the right thing ...
2296 depends on HW_HAS_EISA
2298 select GENERIC_ISA_DMA
2300 The Extended Industry Standard Architecture (EISA) bus was
2301 developed as an open alternative to the IBM MicroChannel bus.
2303 The EISA bus provided some of the features of the IBM MicroChannel
2304 bus while maintaining backward compatibility with cards made for
2305 the older ISA bus. The EISA bus saw limited use between 1988 and
2306 1995 when it was made obsolete by the PCI bus.
2308 Say Y here if you are building a kernel for an EISA-based machine.
2312 source "drivers/eisa/Kconfig"
2315 bool "TURBOchannel support"
2316 depends on MACH_DECSTATION
2318 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2319 processors. TURBOchannel programming specifications are available
2321 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2323 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2324 Linux driver support status is documented at:
2325 <http://www.linux-mips.org/wiki/DECstation>
2328 # bool "Access.Bus support"
2337 select MIPS_EXTERNAL_TIMER
2342 source "drivers/pcmcia/Kconfig"
2344 source "drivers/pci/hotplug/Kconfig"
2347 bool "RapidIO support"
2351 If you say Y here, the kernel will include drivers and
2352 infrastructure code to support RapidIO interconnect devices.
2354 source "drivers/rapidio/Kconfig"
2358 menu "Executable file formats"
2360 source "fs/Kconfig.binfmt"
2365 config MIPS32_COMPAT
2366 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2369 Select this option if you want Linux/MIPS 32-bit binary
2370 compatibility. Since all software available for Linux/MIPS is
2371 currently 32-bit you should say Y here.
2375 depends on MIPS32_COMPAT
2378 config SYSVIPC_COMPAT
2380 depends on COMPAT && SYSVIPC
2384 bool "Kernel support for o32 binaries"
2385 depends on MIPS32_COMPAT
2387 Select this option if you want to run o32 binaries. These are pure
2388 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2389 existing binaries are in this format.
2394 bool "Kernel support for n32 binaries"
2395 depends on MIPS32_COMPAT
2397 Select this option if you want to run n32 binaries. These are
2398 64-bit binaries using 32-bit quantities for addressing and certain
2399 data that would normally be 64-bit. They are used in special
2406 default y if MIPS32_O32 || MIPS32_N32
2410 menu "Power management options"
2412 config ARCH_HIBERNATION_POSSIBLE
2414 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2416 config ARCH_SUSPEND_POSSIBLE
2418 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2420 source "kernel/power/Kconfig"
2424 source "arch/mips/kernel/cpufreq/Kconfig"
2426 source "net/Kconfig"
2428 source "drivers/Kconfig"
2432 source "arch/mips/Kconfig.debug"
2434 source "security/Kconfig"
2436 source "crypto/Kconfig"
2438 menuconfig VIRTUALIZATION
2439 bool "Virtualization"
2442 Say Y here to get to see options for using your Linux host to run other
2443 operating systems inside virtual machines (guests).
2444 This option alone does not add any kernel code.
2446 If you say N, all options in this submenu will be skipped and disabled.
2450 source drivers/virtio/Kconfig
2452 endif # VIRTUALIZATION
2454 source "lib/Kconfig"