4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
10 select HAVE_DYNAMIC_FTRACE
11 select HAVE_FTRACE_MCOUNT_RECORD
12 select HAVE_FUNCTION_GRAPH_TRACER
14 select HAVE_KRETPROBES
15 select RTC_LIB if !MACH_LOONGSON
16 select GENERIC_ATOMIC64 if !64BIT
18 select HAVE_DMA_API_DEBUG
20 menu "Machine selection"
30 bool "Alchemy processor based machines"
31 select 64BIT_PHYS_ADDR
35 select SYS_HAS_CPU_MIPS32_R1
36 select SYS_SUPPORTS_32BIT_KERNEL
37 select SYS_SUPPORTS_APM_EMULATION
39 select ARCH_WANT_OPTIONAL_GPIOLIB
40 select SYS_SUPPORTS_ZBOOT
43 bool "Texas Instruments AR7"
45 select DMA_NONCOHERENT
51 select SYS_HAS_CPU_MIPS32_R1
52 select SYS_HAS_EARLY_PRINTK
53 select SYS_SUPPORTS_32BIT_KERNEL
54 select SYS_SUPPORTS_LITTLE_ENDIAN
55 select SYS_SUPPORTS_ZBOOT_UART16550
56 select ARCH_REQUIRE_GPIOLIB
60 Support for the Texas Instruments AR7 System-on-a-Chip
61 family: TNETD7100, 7200 and 7300.
64 bool "Broadcom BCM47XX based boards"
67 select DMA_NONCOHERENT
70 select SYS_HAS_CPU_MIPS32_R1
71 select SYS_SUPPORTS_32BIT_KERNEL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
74 select SSB_DRIVER_MIPS
75 select SSB_DRIVER_EXTIF
77 select SSB_B43_PCI_BRIDGE if PCI
78 select SSB_PCICORE_HOSTMODE if PCI
80 select SYS_HAS_EARLY_PRINTK
83 Support for BCM47XX based boards
86 bool "Broadcom BCM63XX based boards"
89 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_MIPS32_R1
92 select SYS_SUPPORTS_32BIT_KERNEL
93 select SYS_SUPPORTS_BIG_ENDIAN
94 select SYS_HAS_EARLY_PRINTK
96 select ARCH_REQUIRE_GPIOLIB
98 Support for BCM63XX based boards
105 select DMA_NONCOHERENT
111 select PCI_GT64XXX_PCI0
113 select SYS_HAS_CPU_NEVADA
114 select SYS_HAS_EARLY_PRINTK
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_64BIT_KERNEL
117 select SYS_SUPPORTS_LITTLE_ENDIAN
119 config MACH_DECSTATION
126 select CPU_DADDI_WORKAROUNDS if 64BIT
127 select CPU_R4000_WORKAROUNDS if 64BIT
128 select CPU_R4400_WORKAROUNDS if 64BIT
129 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_R3000
133 select SYS_HAS_CPU_R4X00
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
136 select SYS_SUPPORTS_LITTLE_ENDIAN
137 select SYS_SUPPORTS_128HZ
138 select SYS_SUPPORTS_256HZ
139 select SYS_SUPPORTS_1024HZ
141 This enables support for DEC's MIPS based workstations. For details
142 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
143 DECstation porting pages on <http://decstation.unix-ag.org/>.
145 If you have one of the following DECstation Models you definitely
146 want to choose R4xx0 for the CPU Type:
153 otherwise choose R3000.
156 bool "Jazz family of machines"
159 select ARCH_MAY_HAVE_PC_FDC
162 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
163 select GENERIC_ISA_DMA
168 select SYS_HAS_CPU_R4X00
169 select SYS_SUPPORTS_32BIT_KERNEL
170 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
171 select SYS_SUPPORTS_100HZ
173 This a family of machines based on the MIPS R4030 chipset which was
174 used by several vendors to build RISC/os and Windows NT workstations.
175 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
176 Olivetti M700-10 workstations.
179 bool "Ingenic JZ4740 based machines"
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_SUPPORTS_LITTLE_ENDIAN
183 select DMA_NONCOHERENT
186 select ARCH_REQUIRE_GPIOLIB
187 select SYS_HAS_EARLY_PRINTK
191 bool "LASAT Networks platforms"
194 select DMA_NONCOHERENT
195 select SYS_HAS_EARLY_PRINTK
198 select PCI_GT64XXX_PCI0
200 select R5000_CPU_SCACHE
201 select SYS_HAS_CPU_R5000
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
204 select SYS_SUPPORTS_LITTLE_ENDIAN
207 bool "Loongson family of machines"
208 select SYS_SUPPORTS_ZBOOT
210 This enables the support of Loongson family of machines.
212 Loongson is a family of general-purpose MIPS-compatible CPUs.
213 developed at Institute of Computing Technology (ICT),
214 Chinese Academy of Sciences (CAS) in the People's Republic
215 of China. The chief architect is Professor Weiwu Hu.
218 bool "MIPS Malta board"
219 select ARCH_MAY_HAVE_PC_FDC
224 select DMA_NONCOHERENT
225 select GENERIC_ISA_DMA
231 select MIPS_BOARDS_GEN
233 select MIPS_CPU_SCACHE
234 select PCI_GT64XXX_PCI0
237 select SYS_HAS_CPU_MIPS32_R1
238 select SYS_HAS_CPU_MIPS32_R2
239 select SYS_HAS_CPU_MIPS64_R1
240 select SYS_HAS_CPU_NEVADA
241 select SYS_HAS_CPU_RM7000
242 select SYS_HAS_EARLY_PRINTK
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_64BIT_KERNEL
245 select SYS_SUPPORTS_BIG_ENDIAN
246 select SYS_SUPPORTS_LITTLE_ENDIAN
247 select SYS_SUPPORTS_MIPS_CMP
248 select SYS_SUPPORTS_MULTITHREADING
249 select SYS_SUPPORTS_SMARTMIPS
250 select SYS_SUPPORTS_ZBOOT
252 This enables support for the MIPS Technologies Malta evaluation
256 bool 'MIPS simulator (MIPSsim)'
259 select DMA_NONCOHERENT
260 select SYS_HAS_EARLY_PRINTK
263 select SYS_HAS_CPU_MIPS32_R1
264 select SYS_HAS_CPU_MIPS32_R2
265 select SYS_HAS_EARLY_PRINTK
266 select SYS_SUPPORTS_32BIT_KERNEL
267 select SYS_SUPPORTS_BIG_ENDIAN
268 select SYS_SUPPORTS_MULTITHREADING
269 select SYS_SUPPORTS_LITTLE_ENDIAN
271 This option enables support for MIPS Technologies MIPSsim software
275 bool "NEC EMMA2RH Mark-eins board"
279 This enables support for the NEC Electronics Mark-eins boards.
282 bool "NEC VR4100 series based machines"
285 select SYS_HAS_CPU_VR41XX
286 select ARCH_REQUIRE_GPIOLIB
289 bool "NXP STB220 board"
292 Support for NXP Semiconductors STB220 Development Board.
299 Support for NXP Semiconductors STB225 Development Board.
302 bool "NXP PNX8550 based JBS board"
304 select SYS_SUPPORTS_LITTLE_ENDIAN
306 config PNX8550_STB810
307 bool "NXP PNX8550 based STB810 board"
309 select SYS_SUPPORTS_LITTLE_ENDIAN
312 bool "PMC-Sierra MSP chipsets"
313 depends on EXPERIMENTAL
314 select DMA_NONCOHERENT
316 select NO_EXCEPT_FILL
318 select SYS_HAS_CPU_MIPS32_R1
319 select SYS_HAS_CPU_MIPS32_R2
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_BIG_ENDIAN
324 select SERIAL_8250_CONSOLE
326 This adds support for the PMC-Sierra family of Multi-Service
327 Processor System-On-A-Chips. These parts include a number
328 of integrated peripherals, interfaces and DSPs in addition to
329 a variety of MIPS cores.
332 bool "PMC-Sierra Yosemite eval board"
341 select SYS_HAS_CPU_RM9000
342 select SYS_HAS_EARLY_PRINTK
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_64BIT_KERNEL
345 select SYS_SUPPORTS_BIG_ENDIAN
346 select SYS_SUPPORTS_HIGHMEM
347 select SYS_SUPPORTS_SMP
349 Yosemite is an evaluation board for the RM9000x2 processor
350 manufactured by PMC-Sierra.
356 select CPU_MIPSR2_IRQ_VI
357 select CPU_MIPSR2_IRQ_EI
359 select DMA_NONCOHERENT
361 select SYS_HAS_EARLY_PRINTK
362 select SYS_HAS_CPU_MIPS32_R2
363 select SYS_SUPPORTS_32BIT_KERNEL
364 select SYS_SUPPORTS_BIG_ENDIAN
365 select SYS_SUPPORTS_HIGHMEM
366 select USB_OHCI_LITTLE_ENDIAN
368 This enables support for the Cisco PowerTV Platform.
371 bool "SGI IP22 (Indy/Indigo2)"
377 select DEFAULT_SGI_PARTITION
378 select DMA_NONCOHERENT
382 select IP22_CPU_SCACHE
384 select GENERIC_ISA_DMA_SUPPORT_BROKEN
386 select SGI_HAS_INDYDOG
392 select SYS_HAS_CPU_R4X00
393 select SYS_HAS_CPU_R5000
395 # Disable EARLY_PRINTK for now since it leads to overwritten prom
396 # memory during early boot on some machines.
398 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
399 # for a more details discussion
401 # select SYS_HAS_EARLY_PRINTK
402 select SYS_SUPPORTS_32BIT_KERNEL
403 select SYS_SUPPORTS_64BIT_KERNEL
404 select SYS_SUPPORTS_BIG_ENDIAN
406 This are the SGI Indy, Challenge S and Indigo2, as well as certain
407 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
408 that runs on these, say Y here.
411 bool "SGI IP27 (Origin200/2000)"
415 select DEFAULT_SGI_PARTITION
417 select SYS_HAS_EARLY_PRINTK
419 select NR_CPUS_DEFAULT_64
420 select SYS_HAS_CPU_R10000
421 select SYS_SUPPORTS_64BIT_KERNEL
422 select SYS_SUPPORTS_BIG_ENDIAN
423 select SYS_SUPPORTS_NUMA
424 select SYS_SUPPORTS_SMP
426 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
427 workstations. To compile a Linux kernel that runs on these, say Y
431 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
432 depends on EXPERIMENTAL
438 select DEFAULT_SGI_PARTITION
439 select DMA_NONCOHERENT
440 select GENERIC_ISA_DMA_SUPPORT_BROKEN
446 select SGI_HAS_INDYDOG
452 select SYS_HAS_CPU_R10000
454 # Disable EARLY_PRINTK for now since it leads to overwritten prom
455 # memory during early boot on some machines.
457 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
458 # for a more details discussion
460 # select SYS_HAS_EARLY_PRINTK
461 select SYS_SUPPORTS_64BIT_KERNEL
462 select SYS_SUPPORTS_BIG_ENDIAN
464 This is the SGI Indigo2 with R10000 processor. To compile a Linux
465 kernel that runs on these, say Y here.
474 select DMA_NONCOHERENT
477 select R5000_CPU_SCACHE
478 select RM7000_CPU_SCACHE
479 select SYS_HAS_CPU_R5000
480 select SYS_HAS_CPU_R10000 if BROKEN
481 select SYS_HAS_CPU_RM7000
482 select SYS_HAS_CPU_NEVADA
483 select SYS_SUPPORTS_64BIT_KERNEL
484 select SYS_SUPPORTS_BIG_ENDIAN
486 If you want this kernel to run on SGI O2 workstation, say Y here.
489 bool "Sibyte BCM91120C-CRhine"
490 depends on EXPERIMENTAL
493 select SIBYTE_BCM1120
495 select SYS_HAS_CPU_SB1
496 select SYS_SUPPORTS_BIG_ENDIAN
497 select SYS_SUPPORTS_LITTLE_ENDIAN
500 bool "Sibyte BCM91120x-Carmel"
501 depends on EXPERIMENTAL
504 select SIBYTE_BCM1120
506 select SYS_HAS_CPU_SB1
507 select SYS_SUPPORTS_BIG_ENDIAN
508 select SYS_SUPPORTS_LITTLE_ENDIAN
511 bool "Sibyte BCM91125C-CRhone"
512 depends on EXPERIMENTAL
515 select SIBYTE_BCM1125
517 select SYS_HAS_CPU_SB1
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_HIGHMEM
520 select SYS_SUPPORTS_LITTLE_ENDIAN
523 bool "Sibyte BCM91125E-Rhone"
524 depends on EXPERIMENTAL
527 select SIBYTE_BCM1125H
529 select SYS_HAS_CPU_SB1
530 select SYS_SUPPORTS_BIG_ENDIAN
531 select SYS_SUPPORTS_LITTLE_ENDIAN
534 bool "Sibyte BCM91250A-SWARM"
537 select HAVE_PATA_PLATFORM
538 select NR_CPUS_DEFAULT_2
541 select SYS_HAS_CPU_SB1
542 select SYS_SUPPORTS_BIG_ENDIAN
543 select SYS_SUPPORTS_HIGHMEM
544 select SYS_SUPPORTS_LITTLE_ENDIAN
545 select ZONE_DMA32 if 64BIT
547 config SIBYTE_LITTLESUR
548 bool "Sibyte BCM91250C2-LittleSur"
549 depends on EXPERIMENTAL
552 select HAVE_PATA_PLATFORM
553 select NR_CPUS_DEFAULT_2
556 select SYS_HAS_CPU_SB1
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_HIGHMEM
559 select SYS_SUPPORTS_LITTLE_ENDIAN
561 config SIBYTE_SENTOSA
562 bool "Sibyte BCM91250E-Sentosa"
563 depends on EXPERIMENTAL
566 select NR_CPUS_DEFAULT_2
569 select SYS_HAS_CPU_SB1
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_LITTLE_ENDIAN
574 bool "Sibyte BCM91480B-BigSur"
577 select NR_CPUS_DEFAULT_4
578 select SIBYTE_BCM1x80
580 select SYS_HAS_CPU_SB1
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_HIGHMEM
583 select SYS_SUPPORTS_LITTLE_ENDIAN
584 select ZONE_DMA32 if 64BIT
587 bool "SNI RM200/300/400"
588 select ARC if CPU_LITTLE_ENDIAN
589 select ARC32 if CPU_LITTLE_ENDIAN
590 select SNIPROM if CPU_BIG_ENDIAN
591 select ARCH_MAY_HAVE_PC_FDC
595 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
596 select DMA_NONCOHERENT
597 select GENERIC_ISA_DMA
604 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
605 select SYS_HAS_CPU_R4X00
606 select SYS_HAS_CPU_R5000
607 select SYS_HAS_CPU_R10000
608 select R5000_CPU_SCACHE
609 select SYS_HAS_EARLY_PRINTK
610 select SYS_SUPPORTS_32BIT_KERNEL
611 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
612 select SYS_SUPPORTS_BIG_ENDIAN
613 select SYS_SUPPORTS_HIGHMEM
614 select SYS_SUPPORTS_LITTLE_ENDIAN
616 The SNI RM200/300/400 are MIPS-based machines manufactured by
617 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
618 Technology and now in turn merged with Fujitsu. Say Y here to
619 support this machine type.
622 bool "Toshiba TX39 series based machines"
625 bool "Toshiba TX49 series based machines"
627 config MIKROTIK_RB532
628 bool "Mikrotik RB532 boards"
631 select DMA_NONCOHERENT
634 select SYS_HAS_CPU_MIPS32_R1
635 select SYS_SUPPORTS_32BIT_KERNEL
636 select SYS_SUPPORTS_LITTLE_ENDIAN
639 select ARCH_REQUIRE_GPIOLIB
641 Support the Mikrotik(tm) RouterBoard 532 series,
642 based on the IDT RC32434 SoC.
645 bool "Wind River PPMC board"
650 select DMA_NONCOHERENT
652 select PCI_GT64XXX_PCI0
654 select SYS_HAS_CPU_MIPS32_R1
655 select SYS_HAS_CPU_MIPS32_R2
656 select SYS_HAS_CPU_MIPS64_R1
657 select SYS_HAS_CPU_NEVADA
658 select SYS_HAS_CPU_RM7000
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_LITTLE_ENDIAN
664 This enables support for the Wind River MIPS32 4KC PPMC evaluation
665 board, which is based on GT64120 bridge chip.
667 config CAVIUM_OCTEON_SIMULATOR
668 bool "Cavium Networks Octeon Simulator"
670 select 64BIT_PHYS_ADDR
672 select SYS_SUPPORTS_64BIT_KERNEL
673 select SYS_SUPPORTS_BIG_ENDIAN
674 select SYS_SUPPORTS_HIGHMEM
675 select SYS_SUPPORTS_HOTPLUG_CPU
676 select SYS_HAS_CPU_CAVIUM_OCTEON
678 The Octeon simulator is software performance model of the Cavium
679 Octeon Processor. It supports simulating Octeon processors on x86
682 config CAVIUM_OCTEON_REFERENCE_BOARD
683 bool "Cavium Networks Octeon reference board"
685 select 64BIT_PHYS_ADDR
687 select SYS_SUPPORTS_64BIT_KERNEL
688 select SYS_SUPPORTS_BIG_ENDIAN
689 select SYS_SUPPORTS_HIGHMEM
690 select SYS_SUPPORTS_HOTPLUG_CPU
691 select SYS_HAS_EARLY_PRINTK
692 select SYS_HAS_CPU_CAVIUM_OCTEON
695 select ARCH_SUPPORTS_MSI
698 This option supports all of the Octeon reference boards from Cavium
699 Networks. It builds a kernel that dynamically determines the Octeon
700 CPU type and supports all known board reference implementations.
701 Some of the supported boards are:
708 Say Y here for most Octeon reference boards.
712 source "arch/mips/alchemy/Kconfig"
713 source "arch/mips/bcm63xx/Kconfig"
714 source "arch/mips/jazz/Kconfig"
715 source "arch/mips/jz4740/Kconfig"
716 source "arch/mips/lasat/Kconfig"
717 source "arch/mips/pmc-sierra/Kconfig"
718 source "arch/mips/powertv/Kconfig"
719 source "arch/mips/sgi-ip27/Kconfig"
720 source "arch/mips/sibyte/Kconfig"
721 source "arch/mips/txx9/Kconfig"
722 source "arch/mips/vr41xx/Kconfig"
723 source "arch/mips/cavium-octeon/Kconfig"
724 source "arch/mips/loongson/Kconfig"
728 config RWSEM_GENERIC_SPINLOCK
732 config RWSEM_XCHGADD_ALGORITHM
735 config ARCH_HAS_ILOG2_U32
739 config ARCH_HAS_ILOG2_U64
743 config ARCH_SUPPORTS_OPROFILE
745 default y if !MIPS_MT_SMTC
747 config GENERIC_FIND_NEXT_BIT
751 config GENERIC_HWEIGHT
755 config GENERIC_CALIBRATE_DELAY
759 config GENERIC_CLOCKEVENTS
763 config GENERIC_CMOS_UPDATE
767 config SCHED_OMIT_FRAME_POINTER
771 config GENERIC_HARDIRQS_NO__DO_IRQ
775 # Select some configuration options automatically based on user selections.
780 config ARCH_MAY_HAVE_PC_FDC
829 select ARCH_REQUIRE_GPIOLIB
838 config DMA_NONCOHERENT
840 select NEED_DMA_MAP_STATE
842 config NEED_DMA_MAP_STATE
845 config SYS_HAS_EARLY_PRINTK
849 bool "Support for hot-pluggable CPUs"
850 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
852 Say Y here to allow turning CPUs off and on. CPUs can be
853 controlled through /sys/devices/system/cpu.
854 (Note: power management support will enable this option
855 automatically on SMP systems. )
856 Say N if you want to disable CPU hotplug.
858 config SYS_SUPPORTS_HOTPLUG_CPU
873 config MIPS_DISABLE_OBSOLETE_IDE
882 config GENERIC_ISA_DMA
884 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
887 config GENERIC_ISA_DMA_SUPPORT_BROKEN
889 select GENERIC_ISA_DMA
898 # Endianess selection. Sufficiently obscure so many users don't know what to
899 # answer,so we try hard to limit the available choices. Also the use of a
900 # choice statement should be more obvious to the user.
903 prompt "Endianess selection"
905 Some MIPS machines can be configured for either little or big endian
906 byte order. These modes require different kernels and a different
907 Linux distribution. In general there is one preferred byteorder for a
908 particular system but some systems are just as commonly used in the
909 one or the other endianness.
911 config CPU_BIG_ENDIAN
913 depends on SYS_SUPPORTS_BIG_ENDIAN
915 config CPU_LITTLE_ENDIAN
917 depends on SYS_SUPPORTS_LITTLE_ENDIAN
925 config SYS_SUPPORTS_APM_EMULATION
928 config SYS_SUPPORTS_BIG_ENDIAN
931 config SYS_SUPPORTS_LITTLE_ENDIAN
934 config SYS_SUPPORTS_HUGETLBFS
936 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
963 config IRQ_CPU_OCTEON
966 config MIPS_BOARDS_GEN
969 config PCI_GT64XXX_PCI0
972 config NO_EXCEPT_FILL
983 select DMA_NONCOHERENT
986 select SYS_HAS_CPU_R5500
987 select SYS_SUPPORTS_32BIT_KERNEL
988 select SYS_SUPPORTS_64BIT_KERNEL
989 select SYS_SUPPORTS_BIG_ENDIAN
996 select DMA_NONCOHERENT
997 select SYS_HAS_CPU_MIPS32_R2
998 select SYS_SUPPORTS_32BIT_KERNEL
999 select SYS_SUPPORTS_LITTLE_ENDIAN
1000 select SYS_SUPPORTS_BIG_ENDIAN
1002 select CPU_MIPSR2_IRQ_VI
1014 select DMA_NONCOHERENT
1016 select SYS_HAS_CPU_MIPS32_R1
1017 select SYS_HAS_EARLY_PRINTK
1018 select SYS_SUPPORTS_32BIT_KERNEL
1021 config SWAP_IO_SPACE
1024 config SERIAL_RM9000
1027 config SGI_HAS_INDYDOG
1039 config SGI_HAS_ZILOG
1042 config SGI_HAS_I8042
1045 config DEFAULT_SGI_PARTITION
1057 config MIPS_L1_CACHE_SHIFT
1059 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1060 default "6" if MIPS_CPU_SCACHE
1061 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1064 config HAVE_STD_PC_SERIAL_PORT
1068 bool "ARC console support"
1069 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1073 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1078 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1087 menu "CPU selection"
1093 config CPU_LOONGSON2E
1095 depends on SYS_HAS_CPU_LOONGSON2E
1096 select CPU_LOONGSON2
1098 The Loongson 2E processor implements the MIPS III instruction set
1099 with many extensions.
1101 It has an internal FPGA northbridge, which is compatiable to
1104 config CPU_LOONGSON2F
1106 depends on SYS_HAS_CPU_LOONGSON2F
1107 select CPU_LOONGSON2
1109 select ARCH_REQUIRE_GPIOLIB
1111 The Loongson 2F processor implements the MIPS III instruction set
1112 with many extensions.
1114 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1115 have a similar programming interface with FPGA northbridge used in
1118 config CPU_MIPS32_R1
1119 bool "MIPS32 Release 1"
1120 depends on SYS_HAS_CPU_MIPS32_R1
1121 select CPU_HAS_PREFETCH
1122 select CPU_SUPPORTS_32BIT_KERNEL
1123 select CPU_SUPPORTS_HIGHMEM
1125 Choose this option to build a kernel for release 1 or later of the
1126 MIPS32 architecture. Most modern embedded systems with a 32-bit
1127 MIPS processor are based on a MIPS32 processor. If you know the
1128 specific type of processor in your system, choose those that one
1129 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1130 Release 2 of the MIPS32 architecture is available since several
1131 years so chances are you even have a MIPS32 Release 2 processor
1132 in which case you should choose CPU_MIPS32_R2 instead for better
1135 config CPU_MIPS32_R2
1136 bool "MIPS32 Release 2"
1137 depends on SYS_HAS_CPU_MIPS32_R2
1138 select CPU_HAS_PREFETCH
1139 select CPU_SUPPORTS_32BIT_KERNEL
1140 select CPU_SUPPORTS_HIGHMEM
1142 Choose this option to build a kernel for release 2 or later of the
1143 MIPS32 architecture. Most modern embedded systems with a 32-bit
1144 MIPS processor are based on a MIPS32 processor. If you know the
1145 specific type of processor in your system, choose those that one
1146 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1148 config CPU_MIPS64_R1
1149 bool "MIPS64 Release 1"
1150 depends on SYS_HAS_CPU_MIPS64_R1
1151 select CPU_HAS_PREFETCH
1152 select CPU_SUPPORTS_32BIT_KERNEL
1153 select CPU_SUPPORTS_64BIT_KERNEL
1154 select CPU_SUPPORTS_HIGHMEM
1155 select CPU_SUPPORTS_HUGEPAGES
1157 Choose this option to build a kernel for release 1 or later of the
1158 MIPS64 architecture. Many modern embedded systems with a 64-bit
1159 MIPS processor are based on a MIPS64 processor. If you know the
1160 specific type of processor in your system, choose those that one
1161 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1162 Release 2 of the MIPS64 architecture is available since several
1163 years so chances are you even have a MIPS64 Release 2 processor
1164 in which case you should choose CPU_MIPS64_R2 instead for better
1167 config CPU_MIPS64_R2
1168 bool "MIPS64 Release 2"
1169 depends on SYS_HAS_CPU_MIPS64_R2
1170 select CPU_HAS_PREFETCH
1171 select CPU_SUPPORTS_32BIT_KERNEL
1172 select CPU_SUPPORTS_64BIT_KERNEL
1173 select CPU_SUPPORTS_HIGHMEM
1174 select CPU_SUPPORTS_HUGEPAGES
1176 Choose this option to build a kernel for release 2 or later of the
1177 MIPS64 architecture. Many modern embedded systems with a 64-bit
1178 MIPS processor are based on a MIPS64 processor. If you know the
1179 specific type of processor in your system, choose those that one
1180 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1184 depends on SYS_HAS_CPU_R3000
1186 select CPU_SUPPORTS_32BIT_KERNEL
1187 select CPU_SUPPORTS_HIGHMEM
1189 Please make sure to pick the right CPU type. Linux/MIPS is not
1190 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1191 *not* work on R4000 machines and vice versa. However, since most
1192 of the supported machines have an R4000 (or similar) CPU, R4x00
1193 might be a safe bet. If the resulting kernel does not work,
1194 try to recompile with R3000.
1198 depends on SYS_HAS_CPU_TX39XX
1199 select CPU_SUPPORTS_32BIT_KERNEL
1203 depends on SYS_HAS_CPU_VR41XX
1204 select CPU_SUPPORTS_32BIT_KERNEL
1205 select CPU_SUPPORTS_64BIT_KERNEL
1207 The options selects support for the NEC VR4100 series of processors.
1208 Only choose this option if you have one of these processors as a
1209 kernel built with this option will not run on any other type of
1210 processor or vice versa.
1214 depends on SYS_HAS_CPU_R4300
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1218 MIPS Technologies R4300-series processors.
1222 depends on SYS_HAS_CPU_R4X00
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_64BIT_KERNEL
1226 MIPS Technologies R4000-series processors other than 4300, including
1227 the R4000, R4400, R4600, and 4700.
1231 depends on SYS_HAS_CPU_TX49XX
1232 select CPU_HAS_PREFETCH
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1238 depends on SYS_HAS_CPU_R5000
1239 select CPU_SUPPORTS_32BIT_KERNEL
1240 select CPU_SUPPORTS_64BIT_KERNEL
1242 MIPS Technologies R5000-series processors other than the Nevada.
1246 depends on SYS_HAS_CPU_R5432
1247 select CPU_SUPPORTS_32BIT_KERNEL
1248 select CPU_SUPPORTS_64BIT_KERNEL
1252 depends on SYS_HAS_CPU_R5500
1253 select CPU_SUPPORTS_32BIT_KERNEL
1254 select CPU_SUPPORTS_64BIT_KERNEL
1255 select CPU_SUPPORTS_HUGEPAGES
1257 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1262 depends on EXPERIMENTAL
1263 depends on SYS_HAS_CPU_R6000
1264 select CPU_SUPPORTS_32BIT_KERNEL
1266 MIPS Technologies R6000 and R6000A series processors. Note these
1267 processors are extremely rare and the support for them is incomplete.
1271 depends on SYS_HAS_CPU_NEVADA
1272 select CPU_SUPPORTS_32BIT_KERNEL
1273 select CPU_SUPPORTS_64BIT_KERNEL
1275 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1279 depends on EXPERIMENTAL
1280 depends on SYS_HAS_CPU_R8000
1281 select CPU_HAS_PREFETCH
1282 select CPU_SUPPORTS_64BIT_KERNEL
1284 MIPS Technologies R8000 processors. Note these processors are
1285 uncommon and the support for them is incomplete.
1289 depends on SYS_HAS_CPU_R10000
1290 select CPU_HAS_PREFETCH
1291 select CPU_SUPPORTS_32BIT_KERNEL
1292 select CPU_SUPPORTS_64BIT_KERNEL
1293 select CPU_SUPPORTS_HIGHMEM
1295 MIPS Technologies R10000-series processors.
1299 depends on SYS_HAS_CPU_RM7000
1300 select CPU_HAS_PREFETCH
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1303 select CPU_SUPPORTS_HIGHMEM
1307 depends on SYS_HAS_CPU_RM9000
1308 select CPU_HAS_PREFETCH
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1311 select CPU_SUPPORTS_HIGHMEM
1312 select WEAK_ORDERING
1316 depends on SYS_HAS_CPU_SB1
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1319 select CPU_SUPPORTS_HIGHMEM
1320 select WEAK_ORDERING
1322 config CPU_CAVIUM_OCTEON
1323 bool "Cavium Octeon processor"
1324 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1326 select IRQ_CPU_OCTEON
1327 select CPU_HAS_PREFETCH
1328 select CPU_SUPPORTS_64BIT_KERNEL
1329 select SYS_SUPPORTS_SMP
1330 select NR_CPUS_DEFAULT_16
1331 select WEAK_ORDERING
1332 select CPU_SUPPORTS_HIGHMEM
1333 select CPU_SUPPORTS_HUGEPAGES
1335 The Cavium Octeon processor is a highly integrated chip containing
1336 many ethernet hardware widgets for networking tasks. The processor
1337 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1338 Full details can be found at http://www.caviumnetworks.com.
1343 config CPU_NOP_WORKAROUNDS
1346 config CPU_JUMP_WORKAROUNDS
1349 config CPU_LOONGSON2F_WORKAROUNDS
1350 bool "Loongson 2F Workarounds"
1352 select CPU_NOP_WORKAROUNDS
1353 select CPU_JUMP_WORKAROUNDS
1355 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1356 require workarounds. Without workarounds the system may hang
1357 unexpectedly. For more information please refer to the gas
1358 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1360 Loongson 2F03 and later have fixed these issues and no workarounds
1361 are needed. The workarounds have no significant side effect on them
1362 but may decrease the performance of the system so this option should
1363 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1366 If unsure, please say Y.
1367 endif # CPU_LOONGSON2F
1369 config SYS_SUPPORTS_ZBOOT
1371 select HAVE_KERNEL_GZIP
1372 select HAVE_KERNEL_BZIP2
1373 select HAVE_KERNEL_LZMA
1374 select HAVE_KERNEL_LZO
1376 config SYS_SUPPORTS_ZBOOT_UART16550
1378 select SYS_SUPPORTS_ZBOOT
1380 config CPU_LOONGSON2
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select CPU_SUPPORTS_HIGHMEM
1386 config SYS_HAS_CPU_LOONGSON2E
1389 config SYS_HAS_CPU_LOONGSON2F
1391 select CPU_SUPPORTS_CPUFREQ
1392 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1393 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1395 config SYS_HAS_CPU_MIPS32_R1
1398 config SYS_HAS_CPU_MIPS32_R2
1401 config SYS_HAS_CPU_MIPS64_R1
1404 config SYS_HAS_CPU_MIPS64_R2
1407 config SYS_HAS_CPU_R3000
1410 config SYS_HAS_CPU_TX39XX
1413 config SYS_HAS_CPU_VR41XX
1416 config SYS_HAS_CPU_R4300
1419 config SYS_HAS_CPU_R4X00
1422 config SYS_HAS_CPU_TX49XX
1425 config SYS_HAS_CPU_R5000
1428 config SYS_HAS_CPU_R5432
1431 config SYS_HAS_CPU_R5500
1434 config SYS_HAS_CPU_R6000
1437 config SYS_HAS_CPU_NEVADA
1440 config SYS_HAS_CPU_R8000
1443 config SYS_HAS_CPU_R10000
1446 config SYS_HAS_CPU_RM7000
1449 config SYS_HAS_CPU_RM9000
1452 config SYS_HAS_CPU_SB1
1455 config SYS_HAS_CPU_CAVIUM_OCTEON
1459 # CPU may reorder R->R, R->W, W->R, W->W
1460 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1462 config WEAK_ORDERING
1466 # CPU may reorder reads and writes beyond LL/SC
1467 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1469 config WEAK_REORDERING_BEYOND_LLSC
1474 # These two indicate any level of the MIPS32 and MIPS64 architecture
1478 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1482 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1485 # These two indicate the revision of the architecture, either Release 1 or Release 2
1489 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1493 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1495 config SYS_SUPPORTS_32BIT_KERNEL
1497 config SYS_SUPPORTS_64BIT_KERNEL
1499 config CPU_SUPPORTS_32BIT_KERNEL
1501 config CPU_SUPPORTS_64BIT_KERNEL
1503 config CPU_SUPPORTS_CPUFREQ
1505 config CPU_SUPPORTS_ADDRWINCFG
1507 config CPU_SUPPORTS_HUGEPAGES
1509 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1511 config MIPS_PGD_C0_CONTEXT
1513 default y if 64BIT && CPU_MIPSR2
1516 # Set to y for ptrace access to watch registers.
1518 config HARDWARE_WATCHPOINTS
1520 default y if CPU_MIPSR1 || CPU_MIPSR2
1526 prompt "Kernel code model"
1528 You should only select this option if you have a workload that
1529 actually benefits from 64-bit processing or if your machine has
1530 large memory. You will only be presented a single option in this
1531 menu if your system does not support both 32-bit and 64-bit kernels.
1534 bool "32-bit kernel"
1535 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1538 Select this option if you want to build a 32-bit kernel.
1540 bool "64-bit kernel"
1541 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1542 select HAVE_SYSCALL_WRAPPERS
1544 Select this option if you want to build a 64-bit kernel.
1549 prompt "Kernel page size"
1550 default PAGE_SIZE_4KB
1552 config PAGE_SIZE_4KB
1554 depends on !CPU_LOONGSON2
1556 This option select the standard 4kB Linux page size. On some
1557 R3000-family processors this is the only available page size. Using
1558 4kB page size will minimize memory consumption and is therefore
1559 recommended for low memory systems.
1561 config PAGE_SIZE_8KB
1563 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1565 Using 8kB page size will result in higher performance kernel at
1566 the price of higher memory consumption. This option is available
1567 only on R8000 and cnMIPS processors. Note that you will need a
1568 suitable Linux distribution to support this.
1570 config PAGE_SIZE_16KB
1572 depends on !CPU_R3000 && !CPU_TX39XX
1574 Using 16kB page size will result in higher performance kernel at
1575 the price of higher memory consumption. This option is available on
1576 all non-R3000 family processors. Note that you will need a suitable
1577 Linux distribution to support this.
1579 config PAGE_SIZE_32KB
1581 depends on CPU_CAVIUM_OCTEON
1583 Using 32kB page size will result in higher performance kernel at
1584 the price of higher memory consumption. This option is available
1585 only on cnMIPS cores. Note that you will need a suitable Linux
1586 distribution to support this.
1588 config PAGE_SIZE_64KB
1590 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1592 Using 64kB page size will result in higher performance kernel at
1593 the price of higher memory consumption. This option is available on
1594 all non-R3000 family processor. Not that at the time of this
1595 writing this option is still high experimental.
1602 config IP22_CPU_SCACHE
1607 # Support for a MIPS32 / MIPS64 style S-caches
1609 config MIPS_CPU_SCACHE
1613 config R5000_CPU_SCACHE
1617 config RM7000_CPU_SCACHE
1621 config SIBYTE_DMA_PAGEOPS
1622 bool "Use DMA to clear/copy pages"
1625 Instead of using the CPU to zero and copy pages, use a Data Mover
1626 channel. These DMA channels are otherwise unused by the standard
1627 SiByte Linux port. Seems to give a small performance benefit.
1629 config CPU_HAS_PREFETCH
1633 prompt "MIPS MT options"
1635 config MIPS_MT_DISABLED
1636 bool "Disable multithreading support."
1638 Use this option if your workload can't take advantage of
1639 MIPS hardware multithreading support. On systems that don't have
1640 the option of an MT-enabled processor this option will be the only
1641 option in this menu.
1644 bool "Use 1 TC on each available VPE for SMP"
1645 depends on SYS_SUPPORTS_MULTITHREADING
1646 select CPU_MIPSR2_IRQ_VI
1647 select CPU_MIPSR2_IRQ_EI
1649 select NR_CPUS_DEFAULT_2
1651 select SYS_SUPPORTS_SCHED_SMT if SMP
1652 select SYS_SUPPORTS_SMP
1655 This is a kernel model which is known a VSMP but lately has been
1656 marketesed into SMVP.
1657 Virtual SMP uses the processor's VPEs to implement virtual
1658 processors. In currently available configuration of the 34K processor
1659 this allows for a dual processor. Both processors will share the same
1660 primary caches; each will obtain the half of the TLB for it's own
1661 exclusive use. For a layman this model can be described as similar to
1662 what Intel calls Hyperthreading.
1664 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1667 bool "SMTC: Use all TCs on all VPEs for SMP"
1668 depends on CPU_MIPS32_R2
1669 #depends on CPU_MIPS64_R2 # once there is hardware ...
1670 depends on SYS_SUPPORTS_MULTITHREADING
1671 select CPU_MIPSR2_IRQ_VI
1672 select CPU_MIPSR2_IRQ_EI
1674 select NR_CPUS_DEFAULT_8
1676 select SYS_SUPPORTS_SMP
1679 This is a kernel model which is known a SMTC or lately has been
1680 marketesed into SMVP.
1681 is presenting the available TC's of the core as processors to Linux.
1682 On currently available 34K processors this means a Linux system will
1683 see up to 5 processors. The implementation of the SMTC kernel differs
1684 significantly from VSMP and cannot efficiently coexist in the same
1685 kernel binary so the choice between VSMP and SMTC is a compile time
1688 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1696 bool "SMT (multithreading) scheduler support"
1697 depends on SYS_SUPPORTS_SCHED_SMT
1700 SMT scheduler support improves the CPU scheduler's decision making
1701 when dealing with MIPS MT enabled cores at a cost of slightly
1702 increased overhead in some places. If unsure say N here.
1704 config SYS_SUPPORTS_SCHED_SMT
1708 config SYS_SUPPORTS_MULTITHREADING
1711 config MIPS_MT_FPAFF
1712 bool "Dynamic FPU affinity for FP-intensive threads"
1714 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1716 config MIPS_VPE_LOADER
1717 bool "VPE loader support."
1718 depends on SYS_SUPPORTS_MULTITHREADING
1719 select CPU_MIPSR2_IRQ_VI
1720 select CPU_MIPSR2_IRQ_EI
1723 Includes a loader for loading an elf relocatable object
1724 onto another VPE and running it.
1726 config MIPS_MT_SMTC_IM_BACKSTOP
1727 bool "Use per-TC register bits as backstop for inhibited IM bits"
1728 depends on MIPS_MT_SMTC
1731 To support multiple TC microthreads acting as "CPUs" within
1732 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1733 during interrupt handling. To support legacy drivers and interrupt
1734 controller management code, SMTC has a "backstop" to track and
1735 if necessary restore the interrupt mask. This has some performance
1736 impact on interrupt service overhead.
1738 config MIPS_MT_SMTC_IRQAFF
1739 bool "Support IRQ affinity API"
1740 depends on MIPS_MT_SMTC
1743 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1744 for SMTC Linux kernel. Requires platform support, of which
1745 an example can be found in the MIPS kernel i8259 and Malta
1746 platform code. Adds some overhead to interrupt dispatch, and
1747 should be used only if you know what you are doing.
1749 config MIPS_VPE_LOADER_TOM
1750 bool "Load VPE program into memory hidden from linux"
1751 depends on MIPS_VPE_LOADER
1754 The loader can use memory that is present but has been hidden from
1755 Linux using the kernel command line option "mem=xxMB". It's up to
1756 you to ensure the amount you put in the option and the space your
1757 program requires is less or equal to the amount physically present.
1759 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1760 config MIPS_VPE_APSP_API
1761 bool "Enable support for AP/SP API (RTLX)"
1762 depends on MIPS_VPE_LOADER
1765 config MIPS_APSP_KSPD
1767 depends on MIPS_VPE_APSP_API
1770 KSPD is a kernel daemon that accepts syscall requests from the SP
1771 side, actions them and returns the results. It also handles the
1772 "exit" syscall notifying other kernel modules the SP program is
1773 exiting. You probably want to say yes here.
1776 bool "MIPS CMP framework support"
1777 depends on SYS_SUPPORTS_MIPS_CMP
1779 select SYS_SUPPORTS_SMP
1780 select SYS_SUPPORTS_SCHED_SMT if SMP
1781 select WEAK_ORDERING
1784 This is a placeholder option for the GCMP work. It will need to
1785 be handled differently...
1787 config SB1_PASS_1_WORKAROUNDS
1789 depends on CPU_SB1_PASS_1
1792 config SB1_PASS_2_WORKAROUNDS
1794 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1797 config SB1_PASS_2_1_WORKAROUNDS
1799 depends on CPU_SB1 && CPU_SB1_PASS_2
1802 config 64BIT_PHYS_ADDR
1805 config ARCH_PHYS_ADDR_T_64BIT
1806 def_bool 64BIT_PHYS_ADDR
1808 config CPU_HAS_SMARTMIPS
1809 depends on SYS_SUPPORTS_SMARTMIPS
1810 bool "Support for the SmartMIPS ASE"
1812 SmartMIPS is a extension of the MIPS32 architecture aimed at
1813 increased security at both hardware and software level for
1814 smartcards. Enabling this option will allow proper use of the
1815 SmartMIPS instructions by Linux applications. However a kernel with
1816 this option will not work on a MIPS core without SmartMIPS core. If
1817 you don't know you probably don't have SmartMIPS and should say N
1824 # Vectored interrupt mode is an R2 feature
1826 config CPU_MIPSR2_IRQ_VI
1830 # Extended interrupt mode is an R2 feature
1832 config CPU_MIPSR2_IRQ_EI
1837 depends on !CPU_R3000
1840 config GENERIC_CLOCKEVENTS_BROADCAST
1846 config CPU_DADDI_WORKAROUNDS
1849 config CPU_R4000_WORKAROUNDS
1851 select CPU_R4400_WORKAROUNDS
1853 config CPU_R4400_WORKAROUNDS
1857 # Use the generic interrupt handling code in kernel/irq/:
1859 config GENERIC_HARDIRQS
1863 config GENERIC_IRQ_PROBE
1871 # - Highmem only makes sense for the 32-bit kernel.
1872 # - The current highmem code will only work properly on physically indexed
1873 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1874 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1875 # moment we protect the user and offer the highmem option only on machines
1876 # where it's known to be safe. This will not offer highmem on a few systems
1877 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1878 # indexed CPUs but we're playing safe.
1879 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1880 # know they might have memory configurations that could make use of highmem
1884 bool "High Memory Support"
1885 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1887 config CPU_SUPPORTS_HIGHMEM
1890 config SYS_SUPPORTS_HIGHMEM
1893 config SYS_SUPPORTS_SMARTMIPS
1896 config ARCH_FLATMEM_ENABLE
1898 depends on !NUMA && !CPU_LOONGSON2
1900 config ARCH_DISCONTIGMEM_ENABLE
1902 default y if SGI_IP27
1904 Say Y to support efficient handling of discontiguous physical memory,
1905 for architectures which are either NUMA (Non-Uniform Memory Access)
1906 or have huge holes in the physical address space for other reasons.
1907 See <file:Documentation/vm/numa> for more.
1909 config ARCH_POPULATES_NODE_MAP
1912 config ARCH_SPARSEMEM_ENABLE
1914 select SPARSEMEM_STATIC
1918 depends on SYS_SUPPORTS_NUMA
1920 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1921 Access). This option improves performance on systems with more
1922 than two nodes; on two node systems it is generally better to
1923 leave it disabled; on single node systems disable this option
1926 config SYS_SUPPORTS_NUMA
1932 depends on NEED_MULTIPLE_NODES
1937 bool "Multi-Processing support"
1938 depends on SYS_SUPPORTS_SMP
1940 select USE_GENERIC_SMP_HELPERS
1942 This enables support for systems with more than one CPU. If you have
1943 a system with only one CPU, like most personal computers, say N. If
1944 you have a system with more than one CPU, say Y.
1946 If you say N here, the kernel will run on single and multiprocessor
1947 machines, but will use only one CPU of a multiprocessor machine. If
1948 you say Y here, the kernel will run on many, but not all,
1949 singleprocessor machines. On a singleprocessor machine, the kernel
1950 will run faster if you say N here.
1952 People using multiprocessor machines who say Y here should also say
1953 Y to "Enhanced Real Time Clock Support", below.
1955 See also the SMP-HOWTO available at
1956 <http://www.tldp.org/docs.html#howto>.
1958 If you don't know what to do here, say N.
1963 config SYS_SUPPORTS_MIPS_CMP
1966 config SYS_SUPPORTS_SMP
1969 config NR_CPUS_DEFAULT_1
1972 config NR_CPUS_DEFAULT_2
1975 config NR_CPUS_DEFAULT_4
1978 config NR_CPUS_DEFAULT_8
1981 config NR_CPUS_DEFAULT_16
1984 config NR_CPUS_DEFAULT_32
1987 config NR_CPUS_DEFAULT_64
1991 int "Maximum number of CPUs (2-64)"
1992 range 1 64 if NR_CPUS_DEFAULT_1
1994 default "1" if NR_CPUS_DEFAULT_1
1995 default "2" if NR_CPUS_DEFAULT_2
1996 default "4" if NR_CPUS_DEFAULT_4
1997 default "8" if NR_CPUS_DEFAULT_8
1998 default "16" if NR_CPUS_DEFAULT_16
1999 default "32" if NR_CPUS_DEFAULT_32
2000 default "64" if NR_CPUS_DEFAULT_64
2002 This allows you to specify the maximum number of CPUs which this
2003 kernel will support. The maximum supported value is 32 for 32-bit
2004 kernel and 64 for 64-bit kernels; the minimum value which makes
2005 sense is 1 for Qemu (useful only for kernel debugging purposes)
2006 and 2 for all others.
2008 This is purely to save memory - each supported CPU adds
2009 approximately eight kilobytes to the kernel image. For best
2010 performance should round up your number of processors to the next
2013 source "kernel/time/Kconfig"
2016 # Timer Interrupt Frequency Configuration
2020 prompt "Timer frequency"
2023 Allows the configuration of the timer frequency.
2026 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2029 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2032 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2035 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2038 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2041 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2044 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2048 config SYS_SUPPORTS_48HZ
2051 config SYS_SUPPORTS_100HZ
2054 config SYS_SUPPORTS_128HZ
2057 config SYS_SUPPORTS_250HZ
2060 config SYS_SUPPORTS_256HZ
2063 config SYS_SUPPORTS_1000HZ
2066 config SYS_SUPPORTS_1024HZ
2069 config SYS_SUPPORTS_ARBIT_HZ
2071 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2072 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2073 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2074 !SYS_SUPPORTS_1024HZ
2079 default 100 if HZ_100
2080 default 128 if HZ_128
2081 default 250 if HZ_250
2082 default 256 if HZ_256
2083 default 1000 if HZ_1000
2084 default 1024 if HZ_1024
2086 source "kernel/Kconfig.preempt"
2088 config MIPS_INSANE_LARGE
2089 bool "Support for large 64-bit configurations"
2090 depends on CPU_R10000 && 64BIT
2092 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2093 previous 64-bit processors which only supported 40 bit / 1TB. If you
2094 need processes of more than 1TB virtual address space, say Y here.
2095 This will result in additional memory usage, so it is not
2096 recommended for normal users.
2099 bool "Kexec system call (EXPERIMENTAL)"
2100 depends on EXPERIMENTAL
2102 kexec is a system call that implements the ability to shutdown your
2103 current kernel, and to start another kernel. It is like a reboot
2104 but it is independent of the system firmware. And like a reboot
2105 you can start any kernel with it, not just Linux.
2107 The name comes from the similarity to the exec system call.
2109 It is an ongoing process to be certain the hardware in a machine
2110 is properly shutdown, so do not be surprised if this code does not
2111 initially work for you. It may help to enable device hotplugging
2112 support. As of this writing the exact hardware interface is
2113 strongly in flux, so no good recommendation can be made.
2116 bool "Enable seccomp to safely compute untrusted bytecode"
2120 This kernel feature is useful for number crunching applications
2121 that may need to compute untrusted bytecode during their
2122 execution. By using pipes or other transports made available to
2123 the process as file descriptors supporting the read/write
2124 syscalls, it's possible to isolate those applications in
2125 their own address space using seccomp. Once seccomp is
2126 enabled via /proc/<pid>/seccomp, it cannot be disabled
2127 and the task is only allowed to execute a few safe syscalls
2128 defined by each seccomp mode.
2130 If unsure, say Y. Only embedded should say N here.
2133 bool "Flattened Device Tree support"
2137 Include support for flattened device tree machine descriptions.
2141 config LOCKDEP_SUPPORT
2145 config STACKTRACE_SUPPORT
2149 source "init/Kconfig"
2151 source "kernel/Kconfig.freezer"
2153 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2161 bool "Support for PCI controller"
2162 depends on HW_HAS_PCI
2165 Find out whether you have a PCI motherboard. PCI is the name of a
2166 bus system, i.e. the way the CPU talks to the other stuff inside
2167 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2173 source "drivers/pci/Kconfig"
2176 # ISA support is now enabled via select. Too many systems still have the one
2177 # or other ISA chip on the board that users don't know about so don't expect
2178 # users to choose the right thing ...
2185 depends on HW_HAS_EISA
2187 select GENERIC_ISA_DMA
2189 The Extended Industry Standard Architecture (EISA) bus was
2190 developed as an open alternative to the IBM MicroChannel bus.
2192 The EISA bus provided some of the features of the IBM MicroChannel
2193 bus while maintaining backward compatibility with cards made for
2194 the older ISA bus. The EISA bus saw limited use between 1988 and
2195 1995 when it was made obsolete by the PCI bus.
2197 Say Y here if you are building a kernel for an EISA-based machine.
2201 source "drivers/eisa/Kconfig"
2204 bool "TURBOchannel support"
2205 depends on MACH_DECSTATION
2207 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2208 processors. TURBOchannel programming specifications are available
2210 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2212 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2213 Linux driver support status is documented at:
2214 <http://www.linux-mips.org/wiki/DECstation>
2217 # bool "Access.Bus support"
2226 select MIPS_EXTERNAL_TIMER
2231 source "drivers/pcmcia/Kconfig"
2233 source "drivers/pci/hotplug/Kconfig"
2237 menu "Executable file formats"
2239 source "fs/Kconfig.binfmt"
2244 config MIPS32_COMPAT
2245 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2248 Select this option if you want Linux/MIPS 32-bit binary
2249 compatibility. Since all software available for Linux/MIPS is
2250 currently 32-bit you should say Y here.
2254 depends on MIPS32_COMPAT
2257 config SYSVIPC_COMPAT
2259 depends on COMPAT && SYSVIPC
2263 bool "Kernel support for o32 binaries"
2264 depends on MIPS32_COMPAT
2266 Select this option if you want to run o32 binaries. These are pure
2267 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2268 existing binaries are in this format.
2273 bool "Kernel support for n32 binaries"
2274 depends on MIPS32_COMPAT
2276 Select this option if you want to run n32 binaries. These are
2277 64-bit binaries using 32-bit quantities for addressing and certain
2278 data that would normally be 64-bit. They are used in special
2285 default y if MIPS32_O32 || MIPS32_N32
2289 menu "Power management options"
2291 config ARCH_HIBERNATION_POSSIBLE
2293 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2295 config ARCH_SUSPEND_POSSIBLE
2297 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2299 source "kernel/power/Kconfig"
2303 source "arch/mips/kernel/cpufreq/Kconfig"
2305 source "net/Kconfig"
2307 source "drivers/Kconfig"
2311 source "arch/mips/Kconfig.debug"
2313 source "security/Kconfig"
2315 source "crypto/Kconfig"
2317 source "lib/Kconfig"