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 IRQ_CPU_OCTEON
1003 config MIPS_BOARDS_GEN
1006 config PCI_GT64XXX_PCI0
1009 config NO_EXCEPT_FILL
1014 select SERIAL_RM9000
1020 select DMA_NONCOHERENT
1022 select SWAP_IO_SPACE
1023 select SYS_HAS_CPU_R5500
1024 select SYS_SUPPORTS_32BIT_KERNEL
1025 select SYS_SUPPORTS_64BIT_KERNEL
1026 select SYS_SUPPORTS_BIG_ENDIAN
1033 select DMA_NONCOHERENT
1034 select SYS_HAS_CPU_MIPS32_R2
1035 select SYS_SUPPORTS_32BIT_KERNEL
1036 select SYS_SUPPORTS_LITTLE_ENDIAN
1037 select SYS_SUPPORTS_BIG_ENDIAN
1039 select CPU_MIPSR2_IRQ_VI
1051 select DMA_NONCOHERENT
1053 select SYS_HAS_CPU_MIPS32_R1
1054 select SYS_HAS_EARLY_PRINTK
1055 select SYS_SUPPORTS_32BIT_KERNEL
1058 config SWAP_IO_SPACE
1061 config SERIAL_RM9000
1064 config SGI_HAS_INDYDOG
1076 config SGI_HAS_ZILOG
1079 config SGI_HAS_I8042
1082 config DEFAULT_SGI_PARTITION
1094 config MIPS_L1_CACHE_SHIFT
1096 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1097 default "6" if MIPS_CPU_SCACHE
1098 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1101 config HAVE_STD_PC_SERIAL_PORT
1105 bool "ARC console support"
1106 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1110 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1115 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1124 menu "CPU selection"
1130 config CPU_LOONGSON2E
1132 depends on SYS_HAS_CPU_LOONGSON2E
1133 select CPU_LOONGSON2
1135 The Loongson 2E processor implements the MIPS III instruction set
1136 with many extensions.
1138 It has an internal FPGA northbridge, which is compatible to
1141 config CPU_LOONGSON2F
1143 depends on SYS_HAS_CPU_LOONGSON2F
1144 select CPU_LOONGSON2
1146 select ARCH_REQUIRE_GPIOLIB
1148 The Loongson 2F processor implements the MIPS III instruction set
1149 with many extensions.
1151 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1152 have a similar programming interface with FPGA northbridge used in
1155 config CPU_MIPS32_R1
1156 bool "MIPS32 Release 1"
1157 depends on SYS_HAS_CPU_MIPS32_R1
1158 select CPU_HAS_PREFETCH
1159 select CPU_SUPPORTS_32BIT_KERNEL
1160 select CPU_SUPPORTS_HIGHMEM
1162 Choose this option to build a kernel for release 1 or later of the
1163 MIPS32 architecture. Most modern embedded systems with a 32-bit
1164 MIPS processor are based on a MIPS32 processor. If you know the
1165 specific type of processor in your system, choose those that one
1166 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1167 Release 2 of the MIPS32 architecture is available since several
1168 years so chances are you even have a MIPS32 Release 2 processor
1169 in which case you should choose CPU_MIPS32_R2 instead for better
1172 config CPU_MIPS32_R2
1173 bool "MIPS32 Release 2"
1174 depends on SYS_HAS_CPU_MIPS32_R2
1175 select CPU_HAS_PREFETCH
1176 select CPU_SUPPORTS_32BIT_KERNEL
1177 select CPU_SUPPORTS_HIGHMEM
1179 Choose this option to build a kernel for release 2 or later of the
1180 MIPS32 architecture. Most modern embedded systems with a 32-bit
1181 MIPS processor are based on a MIPS32 processor. If you know the
1182 specific type of processor in your system, choose those that one
1183 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1185 config CPU_MIPS64_R1
1186 bool "MIPS64 Release 1"
1187 depends on SYS_HAS_CPU_MIPS64_R1
1188 select CPU_HAS_PREFETCH
1189 select CPU_SUPPORTS_32BIT_KERNEL
1190 select CPU_SUPPORTS_64BIT_KERNEL
1191 select CPU_SUPPORTS_HIGHMEM
1192 select CPU_SUPPORTS_HUGEPAGES
1194 Choose this option to build a kernel for release 1 or later of the
1195 MIPS64 architecture. Many modern embedded systems with a 64-bit
1196 MIPS processor are based on a MIPS64 processor. If you know the
1197 specific type of processor in your system, choose those that one
1198 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1199 Release 2 of the MIPS64 architecture is available since several
1200 years so chances are you even have a MIPS64 Release 2 processor
1201 in which case you should choose CPU_MIPS64_R2 instead for better
1204 config CPU_MIPS64_R2
1205 bool "MIPS64 Release 2"
1206 depends on SYS_HAS_CPU_MIPS64_R2
1207 select CPU_HAS_PREFETCH
1208 select CPU_SUPPORTS_32BIT_KERNEL
1209 select CPU_SUPPORTS_64BIT_KERNEL
1210 select CPU_SUPPORTS_HIGHMEM
1211 select CPU_SUPPORTS_HUGEPAGES
1213 Choose this option to build a kernel for release 2 or later of the
1214 MIPS64 architecture. Many modern embedded systems with a 64-bit
1215 MIPS processor are based on a MIPS64 processor. If you know the
1216 specific type of processor in your system, choose those that one
1217 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1221 depends on SYS_HAS_CPU_R3000
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_HIGHMEM
1226 Please make sure to pick the right CPU type. Linux/MIPS is not
1227 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1228 *not* work on R4000 machines and vice versa. However, since most
1229 of the supported machines have an R4000 (or similar) CPU, R4x00
1230 might be a safe bet. If the resulting kernel does not work,
1231 try to recompile with R3000.
1235 depends on SYS_HAS_CPU_TX39XX
1236 select CPU_SUPPORTS_32BIT_KERNEL
1240 depends on SYS_HAS_CPU_VR41XX
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1244 The options selects support for the NEC VR4100 series of processors.
1245 Only choose this option if you have one of these processors as a
1246 kernel built with this option will not run on any other type of
1247 processor or vice versa.
1251 depends on SYS_HAS_CPU_R4300
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1255 MIPS Technologies R4300-series processors.
1259 depends on SYS_HAS_CPU_R4X00
1260 select CPU_SUPPORTS_32BIT_KERNEL
1261 select CPU_SUPPORTS_64BIT_KERNEL
1263 MIPS Technologies R4000-series processors other than 4300, including
1264 the R4000, R4400, R4600, and 4700.
1268 depends on SYS_HAS_CPU_TX49XX
1269 select CPU_HAS_PREFETCH
1270 select CPU_SUPPORTS_32BIT_KERNEL
1271 select CPU_SUPPORTS_64BIT_KERNEL
1275 depends on SYS_HAS_CPU_R5000
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1279 MIPS Technologies R5000-series processors other than the Nevada.
1283 depends on SYS_HAS_CPU_R5432
1284 select CPU_SUPPORTS_32BIT_KERNEL
1285 select CPU_SUPPORTS_64BIT_KERNEL
1289 depends on SYS_HAS_CPU_R5500
1290 select CPU_SUPPORTS_32BIT_KERNEL
1291 select CPU_SUPPORTS_64BIT_KERNEL
1292 select CPU_SUPPORTS_HUGEPAGES
1294 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1299 depends on EXPERIMENTAL
1300 depends on SYS_HAS_CPU_R6000
1301 select CPU_SUPPORTS_32BIT_KERNEL
1303 MIPS Technologies R6000 and R6000A series processors. Note these
1304 processors are extremely rare and the support for them is incomplete.
1308 depends on SYS_HAS_CPU_NEVADA
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1312 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1316 depends on EXPERIMENTAL
1317 depends on SYS_HAS_CPU_R8000
1318 select CPU_HAS_PREFETCH
1319 select CPU_SUPPORTS_64BIT_KERNEL
1321 MIPS Technologies R8000 processors. Note these processors are
1322 uncommon and the support for them is incomplete.
1326 depends on SYS_HAS_CPU_R10000
1327 select CPU_HAS_PREFETCH
1328 select CPU_SUPPORTS_32BIT_KERNEL
1329 select CPU_SUPPORTS_64BIT_KERNEL
1330 select CPU_SUPPORTS_HIGHMEM
1332 MIPS Technologies R10000-series processors.
1336 depends on SYS_HAS_CPU_RM7000
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HIGHMEM
1344 depends on SYS_HAS_CPU_RM9000
1345 select CPU_HAS_PREFETCH
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_64BIT_KERNEL
1348 select CPU_SUPPORTS_HIGHMEM
1349 select WEAK_ORDERING
1353 depends on SYS_HAS_CPU_SB1
1354 select CPU_SUPPORTS_32BIT_KERNEL
1355 select CPU_SUPPORTS_64BIT_KERNEL
1356 select CPU_SUPPORTS_HIGHMEM
1357 select WEAK_ORDERING
1359 config CPU_CAVIUM_OCTEON
1360 bool "Cavium Octeon processor"
1361 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1363 select IRQ_CPU_OCTEON
1364 select CPU_HAS_PREFETCH
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select SYS_SUPPORTS_SMP
1367 select NR_CPUS_DEFAULT_16
1368 select WEAK_ORDERING
1369 select CPU_SUPPORTS_HIGHMEM
1370 select CPU_SUPPORTS_HUGEPAGES
1372 The Cavium Octeon processor is a highly integrated chip containing
1373 many ethernet hardware widgets for networking tasks. The processor
1374 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1375 Full details can be found at http://www.caviumnetworks.com.
1377 config CPU_BMIPS3300
1379 depends on SYS_HAS_CPU_BMIPS3300
1380 select DMA_NONCOHERENT
1382 select SWAP_IO_SPACE
1383 select SYS_SUPPORTS_32BIT_KERNEL
1384 select WEAK_ORDERING
1386 Broadcom BMIPS3300 processors.
1388 config CPU_BMIPS4350
1390 depends on SYS_HAS_CPU_BMIPS4350
1391 select CPU_SUPPORTS_32BIT_KERNEL
1392 select DMA_NONCOHERENT
1394 select SWAP_IO_SPACE
1395 select SYS_SUPPORTS_SMP
1396 select SYS_SUPPORTS_HOTPLUG_CPU
1397 select WEAK_ORDERING
1399 Broadcom BMIPS4350 ("VIPER") processors.
1401 config CPU_BMIPS4380
1403 depends on SYS_HAS_CPU_BMIPS4380
1404 select CPU_SUPPORTS_32BIT_KERNEL
1405 select DMA_NONCOHERENT
1407 select SWAP_IO_SPACE
1408 select SYS_SUPPORTS_SMP
1409 select SYS_SUPPORTS_HOTPLUG_CPU
1410 select WEAK_ORDERING
1412 Broadcom BMIPS4380 processors.
1414 config CPU_BMIPS5000
1416 depends on SYS_HAS_CPU_BMIPS5000
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_HIGHMEM
1419 select DMA_NONCOHERENT
1421 select SWAP_IO_SPACE
1422 select SYS_SUPPORTS_SMP
1423 select SYS_SUPPORTS_HOTPLUG_CPU
1424 select WEAK_ORDERING
1426 Broadcom BMIPS5000 processors.
1431 config CPU_NOP_WORKAROUNDS
1434 config CPU_JUMP_WORKAROUNDS
1437 config CPU_LOONGSON2F_WORKAROUNDS
1438 bool "Loongson 2F Workarounds"
1440 select CPU_NOP_WORKAROUNDS
1441 select CPU_JUMP_WORKAROUNDS
1443 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1444 require workarounds. Without workarounds the system may hang
1445 unexpectedly. For more information please refer to the gas
1446 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1448 Loongson 2F03 and later have fixed these issues and no workarounds
1449 are needed. The workarounds have no significant side effect on them
1450 but may decrease the performance of the system so this option should
1451 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1454 If unsure, please say Y.
1455 endif # CPU_LOONGSON2F
1457 config SYS_SUPPORTS_ZBOOT
1459 select HAVE_KERNEL_GZIP
1460 select HAVE_KERNEL_BZIP2
1461 select HAVE_KERNEL_LZMA
1462 select HAVE_KERNEL_LZO
1464 config SYS_SUPPORTS_ZBOOT_UART16550
1466 select SYS_SUPPORTS_ZBOOT
1468 config CPU_LOONGSON2
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_64BIT_KERNEL
1472 select CPU_SUPPORTS_HIGHMEM
1474 config SYS_HAS_CPU_LOONGSON2E
1477 config SYS_HAS_CPU_LOONGSON2F
1479 select CPU_SUPPORTS_CPUFREQ
1480 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1481 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1483 config SYS_HAS_CPU_MIPS32_R1
1486 config SYS_HAS_CPU_MIPS32_R2
1489 config SYS_HAS_CPU_MIPS64_R1
1492 config SYS_HAS_CPU_MIPS64_R2
1495 config SYS_HAS_CPU_R3000
1498 config SYS_HAS_CPU_TX39XX
1501 config SYS_HAS_CPU_VR41XX
1504 config SYS_HAS_CPU_R4300
1507 config SYS_HAS_CPU_R4X00
1510 config SYS_HAS_CPU_TX49XX
1513 config SYS_HAS_CPU_R5000
1516 config SYS_HAS_CPU_R5432
1519 config SYS_HAS_CPU_R5500
1522 config SYS_HAS_CPU_R6000
1525 config SYS_HAS_CPU_NEVADA
1528 config SYS_HAS_CPU_R8000
1531 config SYS_HAS_CPU_R10000
1534 config SYS_HAS_CPU_RM7000
1537 config SYS_HAS_CPU_RM9000
1540 config SYS_HAS_CPU_SB1
1543 config SYS_HAS_CPU_CAVIUM_OCTEON
1546 config SYS_HAS_CPU_BMIPS3300
1549 config SYS_HAS_CPU_BMIPS4350
1552 config SYS_HAS_CPU_BMIPS4380
1555 config SYS_HAS_CPU_BMIPS5000
1559 # CPU may reorder R->R, R->W, W->R, W->W
1560 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1562 config WEAK_ORDERING
1566 # CPU may reorder reads and writes beyond LL/SC
1567 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1569 config WEAK_REORDERING_BEYOND_LLSC
1574 # These two indicate any level of the MIPS32 and MIPS64 architecture
1578 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1582 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1585 # These two indicate the revision of the architecture, either Release 1 or Release 2
1589 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1593 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1595 config SYS_SUPPORTS_32BIT_KERNEL
1597 config SYS_SUPPORTS_64BIT_KERNEL
1599 config CPU_SUPPORTS_32BIT_KERNEL
1601 config CPU_SUPPORTS_64BIT_KERNEL
1603 config CPU_SUPPORTS_CPUFREQ
1605 config CPU_SUPPORTS_ADDRWINCFG
1607 config CPU_SUPPORTS_HUGEPAGES
1609 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1611 config MIPS_PGD_C0_CONTEXT
1613 default y if 64BIT && CPU_MIPSR2
1616 # Set to y for ptrace access to watch registers.
1618 config HARDWARE_WATCHPOINTS
1620 default y if CPU_MIPSR1 || CPU_MIPSR2
1626 prompt "Kernel code model"
1628 You should only select this option if you have a workload that
1629 actually benefits from 64-bit processing or if your machine has
1630 large memory. You will only be presented a single option in this
1631 menu if your system does not support both 32-bit and 64-bit kernels.
1634 bool "32-bit kernel"
1635 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1638 Select this option if you want to build a 32-bit kernel.
1640 bool "64-bit kernel"
1641 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1642 select HAVE_SYSCALL_WRAPPERS
1644 Select this option if you want to build a 64-bit kernel.
1649 prompt "Kernel page size"
1650 default PAGE_SIZE_4KB
1652 config PAGE_SIZE_4KB
1654 depends on !CPU_LOONGSON2
1656 This option select the standard 4kB Linux page size. On some
1657 R3000-family processors this is the only available page size. Using
1658 4kB page size will minimize memory consumption and is therefore
1659 recommended for low memory systems.
1661 config PAGE_SIZE_8KB
1663 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1665 Using 8kB page size will result in higher performance kernel at
1666 the price of higher memory consumption. This option is available
1667 only on R8000 and cnMIPS processors. Note that you will need a
1668 suitable Linux distribution to support this.
1670 config PAGE_SIZE_16KB
1672 depends on !CPU_R3000 && !CPU_TX39XX
1674 Using 16kB page size will result in higher performance kernel at
1675 the price of higher memory consumption. This option is available on
1676 all non-R3000 family processors. Note that you will need a suitable
1677 Linux distribution to support this.
1679 config PAGE_SIZE_32KB
1681 depends on CPU_CAVIUM_OCTEON
1683 Using 32kB page size will result in higher performance kernel at
1684 the price of higher memory consumption. This option is available
1685 only on cnMIPS cores. Note that you will need a suitable Linux
1686 distribution to support this.
1688 config PAGE_SIZE_64KB
1690 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1692 Using 64kB page size will result in higher performance kernel at
1693 the price of higher memory consumption. This option is available on
1694 all non-R3000 family processor. Not that at the time of this
1695 writing this option is still high experimental.
1699 config FORCE_MAX_ZONEORDER
1700 int "Maximum zone order"
1701 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1702 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1703 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1704 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1708 The kernel memory allocator divides physically contiguous memory
1709 blocks into "zones", where each zone is a power of two number of
1710 pages. This option selects the largest power of two that the kernel
1711 keeps in the memory allocator. If you need to allocate very large
1712 blocks of physically contiguous memory, then you may need to
1713 increase this value.
1715 This config option is actually maximum order plus one. For example,
1716 a value of 11 means that the largest free memory block is 2^10 pages.
1718 The page size is not necessarily 4KB. Keep this in mind
1719 when choosing a value for this option.
1724 config IP22_CPU_SCACHE
1729 # Support for a MIPS32 / MIPS64 style S-caches
1731 config MIPS_CPU_SCACHE
1735 config R5000_CPU_SCACHE
1739 config RM7000_CPU_SCACHE
1743 config SIBYTE_DMA_PAGEOPS
1744 bool "Use DMA to clear/copy pages"
1747 Instead of using the CPU to zero and copy pages, use a Data Mover
1748 channel. These DMA channels are otherwise unused by the standard
1749 SiByte Linux port. Seems to give a small performance benefit.
1751 config CPU_HAS_PREFETCH
1755 prompt "MIPS MT options"
1757 config MIPS_MT_DISABLED
1758 bool "Disable multithreading support."
1760 Use this option if your workload can't take advantage of
1761 MIPS hardware multithreading support. On systems that don't have
1762 the option of an MT-enabled processor this option will be the only
1763 option in this menu.
1766 bool "Use 1 TC on each available VPE for SMP"
1767 depends on SYS_SUPPORTS_MULTITHREADING
1768 select CPU_MIPSR2_IRQ_VI
1769 select CPU_MIPSR2_IRQ_EI
1771 select NR_CPUS_DEFAULT_2
1773 select SYS_SUPPORTS_SCHED_SMT if SMP
1774 select SYS_SUPPORTS_SMP
1777 This is a kernel model which is known a VSMP but lately has been
1778 marketesed into SMVP.
1779 Virtual SMP uses the processor's VPEs to implement virtual
1780 processors. In currently available configuration of the 34K processor
1781 this allows for a dual processor. Both processors will share the same
1782 primary caches; each will obtain the half of the TLB for it's own
1783 exclusive use. For a layman this model can be described as similar to
1784 what Intel calls Hyperthreading.
1786 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1789 bool "SMTC: Use all TCs on all VPEs for SMP"
1790 depends on CPU_MIPS32_R2
1791 #depends on CPU_MIPS64_R2 # once there is hardware ...
1792 depends on SYS_SUPPORTS_MULTITHREADING
1793 select CPU_MIPSR2_IRQ_VI
1794 select CPU_MIPSR2_IRQ_EI
1796 select NR_CPUS_DEFAULT_8
1798 select SYS_SUPPORTS_SMP
1801 This is a kernel model which is known a SMTC or lately has been
1802 marketesed into SMVP.
1803 is presenting the available TC's of the core as processors to Linux.
1804 On currently available 34K processors this means a Linux system will
1805 see up to 5 processors. The implementation of the SMTC kernel differs
1806 significantly from VSMP and cannot efficiently coexist in the same
1807 kernel binary so the choice between VSMP and SMTC is a compile time
1810 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1818 bool "SMT (multithreading) scheduler support"
1819 depends on SYS_SUPPORTS_SCHED_SMT
1822 SMT scheduler support improves the CPU scheduler's decision making
1823 when dealing with MIPS MT enabled cores at a cost of slightly
1824 increased overhead in some places. If unsure say N here.
1826 config SYS_SUPPORTS_SCHED_SMT
1830 config SYS_SUPPORTS_MULTITHREADING
1833 config MIPS_MT_FPAFF
1834 bool "Dynamic FPU affinity for FP-intensive threads"
1836 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1838 config MIPS_VPE_LOADER
1839 bool "VPE loader support."
1840 depends on SYS_SUPPORTS_MULTITHREADING
1841 select CPU_MIPSR2_IRQ_VI
1842 select CPU_MIPSR2_IRQ_EI
1845 Includes a loader for loading an elf relocatable object
1846 onto another VPE and running it.
1848 config MIPS_MT_SMTC_IM_BACKSTOP
1849 bool "Use per-TC register bits as backstop for inhibited IM bits"
1850 depends on MIPS_MT_SMTC
1853 To support multiple TC microthreads acting as "CPUs" within
1854 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1855 during interrupt handling. To support legacy drivers and interrupt
1856 controller management code, SMTC has a "backstop" to track and
1857 if necessary restore the interrupt mask. This has some performance
1858 impact on interrupt service overhead.
1860 config MIPS_MT_SMTC_IRQAFF
1861 bool "Support IRQ affinity API"
1862 depends on MIPS_MT_SMTC
1865 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1866 for SMTC Linux kernel. Requires platform support, of which
1867 an example can be found in the MIPS kernel i8259 and Malta
1868 platform code. Adds some overhead to interrupt dispatch, and
1869 should be used only if you know what you are doing.
1871 config MIPS_VPE_LOADER_TOM
1872 bool "Load VPE program into memory hidden from linux"
1873 depends on MIPS_VPE_LOADER
1876 The loader can use memory that is present but has been hidden from
1877 Linux using the kernel command line option "mem=xxMB". It's up to
1878 you to ensure the amount you put in the option and the space your
1879 program requires is less or equal to the amount physically present.
1881 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1882 config MIPS_VPE_APSP_API
1883 bool "Enable support for AP/SP API (RTLX)"
1884 depends on MIPS_VPE_LOADER
1887 config MIPS_APSP_KSPD
1889 depends on MIPS_VPE_APSP_API
1892 KSPD is a kernel daemon that accepts syscall requests from the SP
1893 side, actions them and returns the results. It also handles the
1894 "exit" syscall notifying other kernel modules the SP program is
1895 exiting. You probably want to say yes here.
1898 bool "MIPS CMP framework support"
1899 depends on SYS_SUPPORTS_MIPS_CMP
1901 select SYS_SUPPORTS_SMP
1902 select SYS_SUPPORTS_SCHED_SMT if SMP
1903 select WEAK_ORDERING
1906 This is a placeholder option for the GCMP work. It will need to
1907 be handled differently...
1909 config SB1_PASS_1_WORKAROUNDS
1911 depends on CPU_SB1_PASS_1
1914 config SB1_PASS_2_WORKAROUNDS
1916 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1919 config SB1_PASS_2_1_WORKAROUNDS
1921 depends on CPU_SB1 && CPU_SB1_PASS_2
1924 config 64BIT_PHYS_ADDR
1927 config ARCH_PHYS_ADDR_T_64BIT
1928 def_bool 64BIT_PHYS_ADDR
1930 config CPU_HAS_SMARTMIPS
1931 depends on SYS_SUPPORTS_SMARTMIPS
1932 bool "Support for the SmartMIPS ASE"
1934 SmartMIPS is a extension of the MIPS32 architecture aimed at
1935 increased security at both hardware and software level for
1936 smartcards. Enabling this option will allow proper use of the
1937 SmartMIPS instructions by Linux applications. However a kernel with
1938 this option will not work on a MIPS core without SmartMIPS core. If
1939 you don't know you probably don't have SmartMIPS and should say N
1946 # Vectored interrupt mode is an R2 feature
1948 config CPU_MIPSR2_IRQ_VI
1952 # Extended interrupt mode is an R2 feature
1954 config CPU_MIPSR2_IRQ_EI
1959 depends on !CPU_R3000
1962 config GENERIC_CLOCKEVENTS_BROADCAST
1968 config CPU_DADDI_WORKAROUNDS
1971 config CPU_R4000_WORKAROUNDS
1973 select CPU_R4400_WORKAROUNDS
1975 config CPU_R4400_WORKAROUNDS
1979 # - Highmem only makes sense for the 32-bit kernel.
1980 # - The current highmem code will only work properly on physically indexed
1981 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1982 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1983 # moment we protect the user and offer the highmem option only on machines
1984 # where it's known to be safe. This will not offer highmem on a few systems
1985 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1986 # indexed CPUs but we're playing safe.
1987 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1988 # know they might have memory configurations that could make use of highmem
1992 bool "High Memory Support"
1993 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1995 config CPU_SUPPORTS_HIGHMEM
1998 config SYS_SUPPORTS_HIGHMEM
2001 config SYS_SUPPORTS_SMARTMIPS
2004 config ARCH_FLATMEM_ENABLE
2006 depends on !NUMA && !CPU_LOONGSON2
2008 config ARCH_DISCONTIGMEM_ENABLE
2010 default y if SGI_IP27
2012 Say Y to support efficient handling of discontiguous physical memory,
2013 for architectures which are either NUMA (Non-Uniform Memory Access)
2014 or have huge holes in the physical address space for other reasons.
2015 See <file:Documentation/vm/numa> for more.
2017 config ARCH_POPULATES_NODE_MAP
2020 config ARCH_SPARSEMEM_ENABLE
2022 select SPARSEMEM_STATIC
2026 depends on SYS_SUPPORTS_NUMA
2028 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2029 Access). This option improves performance on systems with more
2030 than two nodes; on two node systems it is generally better to
2031 leave it disabled; on single node systems disable this option
2034 config SYS_SUPPORTS_NUMA
2040 depends on NEED_MULTIPLE_NODES
2042 config HW_PERF_EVENTS
2043 bool "Enable hardware performance counter support for perf events"
2044 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2047 Enable hardware performance counter support for perf events. If
2048 disabled, perf events will use software events only.
2053 bool "Multi-Processing support"
2054 depends on SYS_SUPPORTS_SMP
2056 select USE_GENERIC_SMP_HELPERS
2058 This enables support for systems with more than one CPU. If you have
2059 a system with only one CPU, like most personal computers, say N. If
2060 you have a system with more than one CPU, say Y.
2062 If you say N here, the kernel will run on single and multiprocessor
2063 machines, but will use only one CPU of a multiprocessor machine. If
2064 you say Y here, the kernel will run on many, but not all,
2065 singleprocessor machines. On a singleprocessor machine, the kernel
2066 will run faster if you say N here.
2068 People using multiprocessor machines who say Y here should also say
2069 Y to "Enhanced Real Time Clock Support", below.
2071 See also the SMP-HOWTO available at
2072 <http://www.tldp.org/docs.html#howto>.
2074 If you don't know what to do here, say N.
2079 config SYS_SUPPORTS_MIPS_CMP
2082 config SYS_SUPPORTS_SMP
2085 config NR_CPUS_DEFAULT_1
2088 config NR_CPUS_DEFAULT_2
2091 config NR_CPUS_DEFAULT_4
2094 config NR_CPUS_DEFAULT_8
2097 config NR_CPUS_DEFAULT_16
2100 config NR_CPUS_DEFAULT_32
2103 config NR_CPUS_DEFAULT_64
2107 int "Maximum number of CPUs (2-64)"
2108 range 1 64 if NR_CPUS_DEFAULT_1
2110 default "1" if NR_CPUS_DEFAULT_1
2111 default "2" if NR_CPUS_DEFAULT_2
2112 default "4" if NR_CPUS_DEFAULT_4
2113 default "8" if NR_CPUS_DEFAULT_8
2114 default "16" if NR_CPUS_DEFAULT_16
2115 default "32" if NR_CPUS_DEFAULT_32
2116 default "64" if NR_CPUS_DEFAULT_64
2118 This allows you to specify the maximum number of CPUs which this
2119 kernel will support. The maximum supported value is 32 for 32-bit
2120 kernel and 64 for 64-bit kernels; the minimum value which makes
2121 sense is 1 for Qemu (useful only for kernel debugging purposes)
2122 and 2 for all others.
2124 This is purely to save memory - each supported CPU adds
2125 approximately eight kilobytes to the kernel image. For best
2126 performance should round up your number of processors to the next
2129 source "kernel/time/Kconfig"
2132 # Timer Interrupt Frequency Configuration
2136 prompt "Timer frequency"
2139 Allows the configuration of the timer frequency.
2142 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2145 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2148 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2151 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2154 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2157 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2160 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2164 config SYS_SUPPORTS_48HZ
2167 config SYS_SUPPORTS_100HZ
2170 config SYS_SUPPORTS_128HZ
2173 config SYS_SUPPORTS_250HZ
2176 config SYS_SUPPORTS_256HZ
2179 config SYS_SUPPORTS_1000HZ
2182 config SYS_SUPPORTS_1024HZ
2185 config SYS_SUPPORTS_ARBIT_HZ
2187 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2188 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2189 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2190 !SYS_SUPPORTS_1024HZ
2195 default 100 if HZ_100
2196 default 128 if HZ_128
2197 default 250 if HZ_250
2198 default 256 if HZ_256
2199 default 1000 if HZ_1000
2200 default 1024 if HZ_1024
2202 source "kernel/Kconfig.preempt"
2204 config MIPS_INSANE_LARGE
2205 bool "Support for large 64-bit configurations"
2206 depends on CPU_R10000 && 64BIT
2208 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2209 previous 64-bit processors which only supported 40 bit / 1TB. If you
2210 need processes of more than 1TB virtual address space, say Y here.
2211 This will result in additional memory usage, so it is not
2212 recommended for normal users.
2215 bool "Kexec system call (EXPERIMENTAL)"
2216 depends on EXPERIMENTAL
2218 kexec is a system call that implements the ability to shutdown your
2219 current kernel, and to start another kernel. It is like a reboot
2220 but it is independent of the system firmware. And like a reboot
2221 you can start any kernel with it, not just Linux.
2223 The name comes from the similarity to the exec system call.
2225 It is an ongoing process to be certain the hardware in a machine
2226 is properly shutdown, so do not be surprised if this code does not
2227 initially work for you. It may help to enable device hotplugging
2228 support. As of this writing the exact hardware interface is
2229 strongly in flux, so no good recommendation can be made.
2232 bool "Enable seccomp to safely compute untrusted bytecode"
2236 This kernel feature is useful for number crunching applications
2237 that may need to compute untrusted bytecode during their
2238 execution. By using pipes or other transports made available to
2239 the process as file descriptors supporting the read/write
2240 syscalls, it's possible to isolate those applications in
2241 their own address space using seccomp. Once seccomp is
2242 enabled via /proc/<pid>/seccomp, it cannot be disabled
2243 and the task is only allowed to execute a few safe syscalls
2244 defined by each seccomp mode.
2246 If unsure, say Y. Only embedded should say N here.
2249 bool "Flattened Device Tree support"
2251 select OF_EARLY_FLATTREE
2253 Include support for flattened device tree machine descriptions.
2257 config LOCKDEP_SUPPORT
2261 config STACKTRACE_SUPPORT
2265 source "init/Kconfig"
2267 source "kernel/Kconfig.freezer"
2269 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2277 bool "Support for PCI controller"
2278 depends on HW_HAS_PCI
2281 Find out whether you have a PCI motherboard. PCI is the name of a
2282 bus system, i.e. the way the CPU talks to the other stuff inside
2283 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2289 source "drivers/pci/Kconfig"
2292 # ISA support is now enabled via select. Too many systems still have the one
2293 # or other ISA chip on the board that users don't know about so don't expect
2294 # users to choose the right thing ...
2301 depends on HW_HAS_EISA
2303 select GENERIC_ISA_DMA
2305 The Extended Industry Standard Architecture (EISA) bus was
2306 developed as an open alternative to the IBM MicroChannel bus.
2308 The EISA bus provided some of the features of the IBM MicroChannel
2309 bus while maintaining backward compatibility with cards made for
2310 the older ISA bus. The EISA bus saw limited use between 1988 and
2311 1995 when it was made obsolete by the PCI bus.
2313 Say Y here if you are building a kernel for an EISA-based machine.
2317 source "drivers/eisa/Kconfig"
2320 bool "TURBOchannel support"
2321 depends on MACH_DECSTATION
2323 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2324 processors. TURBOchannel programming specifications are available
2326 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2328 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2329 Linux driver support status is documented at:
2330 <http://www.linux-mips.org/wiki/DECstation>
2333 # bool "Access.Bus support"
2342 select MIPS_EXTERNAL_TIMER
2347 source "drivers/pcmcia/Kconfig"
2349 source "drivers/pci/hotplug/Kconfig"
2352 bool "RapidIO support"
2356 If you say Y here, the kernel will include drivers and
2357 infrastructure code to support RapidIO interconnect devices.
2359 source "drivers/rapidio/Kconfig"
2363 menu "Executable file formats"
2365 source "fs/Kconfig.binfmt"
2370 config MIPS32_COMPAT
2371 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2374 Select this option if you want Linux/MIPS 32-bit binary
2375 compatibility. Since all software available for Linux/MIPS is
2376 currently 32-bit you should say Y here.
2380 depends on MIPS32_COMPAT
2383 config SYSVIPC_COMPAT
2385 depends on COMPAT && SYSVIPC
2389 bool "Kernel support for o32 binaries"
2390 depends on MIPS32_COMPAT
2392 Select this option if you want to run o32 binaries. These are pure
2393 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2394 existing binaries are in this format.
2399 bool "Kernel support for n32 binaries"
2400 depends on MIPS32_COMPAT
2402 Select this option if you want to run n32 binaries. These are
2403 64-bit binaries using 32-bit quantities for addressing and certain
2404 data that would normally be 64-bit. They are used in special
2411 default y if MIPS32_O32 || MIPS32_N32
2415 menu "Power management options"
2417 config ARCH_HIBERNATION_POSSIBLE
2419 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2421 config ARCH_SUSPEND_POSSIBLE
2423 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2425 source "kernel/power/Kconfig"
2429 source "arch/mips/kernel/cpufreq/Kconfig"
2431 source "net/Kconfig"
2433 source "drivers/Kconfig"
2437 source "arch/mips/Kconfig.debug"
2439 source "security/Kconfig"
2441 source "crypto/Kconfig"
2443 menuconfig VIRTUALIZATION
2444 bool "Virtualization"
2447 Say Y here to get to see options for using your Linux host to run other
2448 operating systems inside virtual machines (guests).
2449 This option alone does not add any kernel code.
2451 If you say N, all options in this submenu will be skipped and disabled.
2455 source drivers/virtio/Kconfig
2457 endif # VIRTUALIZATION
2459 source "lib/Kconfig"