4 select HAVE_GENERIC_DMA_COHERENT
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
10 select HAVE_FUNCTION_TRACER
11 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
12 select HAVE_DYNAMIC_FTRACE
13 select HAVE_FTRACE_MCOUNT_RECORD
14 select HAVE_C_RECORDMCOUNT
15 select HAVE_FUNCTION_GRAPH_TRACER
17 select HAVE_KRETPROBES
18 select RTC_LIB if !MACH_LOONGSON
19 select GENERIC_ATOMIC64 if !64BIT
21 select HAVE_DMA_API_DEBUG
22 select HAVE_GENERIC_HARDIRQS
23 select GENERIC_IRQ_PROBE
24 select HAVE_ARCH_JUMP_LABEL
26 menu "Machine selection"
36 bool "Alchemy processor based machines"
37 select 64BIT_PHYS_ADDR
41 select SYS_HAS_CPU_MIPS32_R1
42 select SYS_SUPPORTS_32BIT_KERNEL
43 select SYS_SUPPORTS_APM_EMULATION
45 select ARCH_WANT_OPTIONAL_GPIOLIB
46 select SYS_SUPPORTS_ZBOOT
49 bool "Texas Instruments AR7"
51 select DMA_NONCOHERENT
57 select SYS_HAS_CPU_MIPS32_R1
58 select SYS_HAS_EARLY_PRINTK
59 select SYS_SUPPORTS_32BIT_KERNEL
60 select SYS_SUPPORTS_LITTLE_ENDIAN
61 select SYS_SUPPORTS_ZBOOT_UART16550
62 select ARCH_REQUIRE_GPIOLIB
66 Support for the Texas Instruments AR7 System-on-a-Chip
67 family: TNETD7100, 7200 and 7300.
70 bool "Broadcom BCM47XX based boards"
73 select DMA_NONCOHERENT
76 select SYS_HAS_CPU_MIPS32_R1
77 select SYS_SUPPORTS_32BIT_KERNEL
78 select SYS_SUPPORTS_LITTLE_ENDIAN
80 select SSB_DRIVER_MIPS
81 select SSB_DRIVER_EXTIF
83 select SSB_B43_PCI_BRIDGE if PCI
84 select SSB_PCICORE_HOSTMODE if PCI
86 select SYS_HAS_EARLY_PRINTK
89 Support for BCM47XX based boards
92 bool "Broadcom BCM63XX based boards"
95 select DMA_NONCOHERENT
97 select SYS_HAS_CPU_MIPS32_R1
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_BIG_ENDIAN
100 select SYS_HAS_EARLY_PRINTK
102 select ARCH_REQUIRE_GPIOLIB
104 Support for BCM63XX based boards
111 select DMA_NONCOHERENT
117 select PCI_GT64XXX_PCI0
119 select SYS_HAS_CPU_NEVADA
120 select SYS_HAS_EARLY_PRINTK
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_64BIT_KERNEL
123 select SYS_SUPPORTS_LITTLE_ENDIAN
125 config MACH_DECSTATION
132 select CPU_DADDI_WORKAROUNDS if 64BIT
133 select CPU_R4000_WORKAROUNDS if 64BIT
134 select CPU_R4400_WORKAROUNDS if 64BIT
135 select DMA_NONCOHERENT
138 select SYS_HAS_CPU_R3000
139 select SYS_HAS_CPU_R4X00
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
142 select SYS_SUPPORTS_LITTLE_ENDIAN
143 select SYS_SUPPORTS_128HZ
144 select SYS_SUPPORTS_256HZ
145 select SYS_SUPPORTS_1024HZ
147 This enables support for DEC's MIPS based workstations. For details
148 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
149 DECstation porting pages on <http://decstation.unix-ag.org/>.
151 If you have one of the following DECstation Models you definitely
152 want to choose R4xx0 for the CPU Type:
159 otherwise choose R3000.
162 bool "Jazz family of machines"
165 select ARCH_MAY_HAVE_PC_FDC
168 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
169 select GENERIC_ISA_DMA
174 select SYS_HAS_CPU_R4X00
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
177 select SYS_SUPPORTS_100HZ
179 This a family of machines based on the MIPS R4030 chipset which was
180 used by several vendors to build RISC/os and Windows NT workstations.
181 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
182 Olivetti M700-10 workstations.
185 bool "Ingenic JZ4740 based machines"
186 select SYS_HAS_CPU_MIPS32_R1
187 select SYS_SUPPORTS_32BIT_KERNEL
188 select SYS_SUPPORTS_LITTLE_ENDIAN
189 select DMA_NONCOHERENT
192 select ARCH_REQUIRE_GPIOLIB
193 select SYS_HAS_EARLY_PRINTK
197 bool "LASAT Networks platforms"
200 select DMA_NONCOHERENT
201 select SYS_HAS_EARLY_PRINTK
204 select PCI_GT64XXX_PCI0
206 select R5000_CPU_SCACHE
207 select SYS_HAS_CPU_R5000
208 select SYS_SUPPORTS_32BIT_KERNEL
209 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
210 select SYS_SUPPORTS_LITTLE_ENDIAN
213 bool "Loongson family of machines"
214 select SYS_SUPPORTS_ZBOOT
216 This enables the support of Loongson family of machines.
218 Loongson is a family of general-purpose MIPS-compatible CPUs.
219 developed at Institute of Computing Technology (ICT),
220 Chinese Academy of Sciences (CAS) in the People's Republic
221 of China. The chief architect is Professor Weiwu Hu.
224 bool "MIPS Malta board"
225 select ARCH_MAY_HAVE_PC_FDC
230 select DMA_NONCOHERENT
231 select GENERIC_ISA_DMA
237 select MIPS_BOARDS_GEN
239 select MIPS_CPU_SCACHE
240 select PCI_GT64XXX_PCI0
243 select SYS_HAS_CPU_MIPS32_R1
244 select SYS_HAS_CPU_MIPS32_R2
245 select SYS_HAS_CPU_MIPS64_R1
246 select SYS_HAS_CPU_NEVADA
247 select SYS_HAS_CPU_RM7000
248 select SYS_HAS_EARLY_PRINTK
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_64BIT_KERNEL
251 select SYS_SUPPORTS_BIG_ENDIAN
252 select SYS_SUPPORTS_LITTLE_ENDIAN
253 select SYS_SUPPORTS_MIPS_CMP
254 select SYS_SUPPORTS_MULTITHREADING
255 select SYS_SUPPORTS_SMARTMIPS
256 select SYS_SUPPORTS_ZBOOT
258 This enables support for the MIPS Technologies Malta evaluation
262 bool 'MIPS simulator (MIPSsim)'
265 select DMA_NONCOHERENT
266 select SYS_HAS_EARLY_PRINTK
269 select SYS_HAS_CPU_MIPS32_R1
270 select SYS_HAS_CPU_MIPS32_R2
271 select SYS_HAS_EARLY_PRINTK
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_BIG_ENDIAN
274 select SYS_SUPPORTS_MULTITHREADING
275 select SYS_SUPPORTS_LITTLE_ENDIAN
277 This option enables support for MIPS Technologies MIPSsim software
281 bool "NEC EMMA2RH Mark-eins board"
285 This enables support for the NEC Electronics Mark-eins boards.
288 bool "NEC VR4100 series based machines"
291 select SYS_HAS_CPU_VR41XX
292 select ARCH_REQUIRE_GPIOLIB
295 bool "NXP STB220 board"
298 Support for NXP Semiconductors STB220 Development Board.
305 Support for NXP Semiconductors STB225 Development Board.
308 bool "NXP PNX8550 based JBS board"
310 select SYS_SUPPORTS_LITTLE_ENDIAN
312 config PNX8550_STB810
313 bool "NXP PNX8550 based STB810 board"
315 select SYS_SUPPORTS_LITTLE_ENDIAN
318 bool "PMC-Sierra MSP chipsets"
319 depends on EXPERIMENTAL
320 select DMA_NONCOHERENT
322 select NO_EXCEPT_FILL
324 select SYS_HAS_CPU_MIPS32_R1
325 select SYS_HAS_CPU_MIPS32_R2
326 select SYS_SUPPORTS_32BIT_KERNEL
327 select SYS_SUPPORTS_BIG_ENDIAN
330 select SERIAL_8250_CONSOLE
332 This adds support for the PMC-Sierra family of Multi-Service
333 Processor System-On-A-Chips. These parts include a number
334 of integrated peripherals, interfaces and DSPs in addition to
335 a variety of MIPS cores.
338 bool "PMC-Sierra Yosemite eval board"
347 select SYS_HAS_CPU_RM9000
348 select SYS_HAS_EARLY_PRINTK
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL
351 select SYS_SUPPORTS_BIG_ENDIAN
352 select SYS_SUPPORTS_HIGHMEM
353 select SYS_SUPPORTS_SMP
355 Yosemite is an evaluation board for the RM9000x2 processor
356 manufactured by PMC-Sierra.
362 select CPU_MIPSR2_IRQ_VI
363 select CPU_MIPSR2_IRQ_EI
365 select DMA_NONCOHERENT
367 select SYS_HAS_EARLY_PRINTK
368 select SYS_HAS_CPU_MIPS32_R2
369 select SYS_SUPPORTS_32BIT_KERNEL
370 select SYS_SUPPORTS_BIG_ENDIAN
371 select SYS_SUPPORTS_HIGHMEM
372 select USB_OHCI_LITTLE_ENDIAN
374 This enables support for the Cisco PowerTV Platform.
377 bool "SGI IP22 (Indy/Indigo2)"
383 select DEFAULT_SGI_PARTITION
384 select DMA_NONCOHERENT
388 select IP22_CPU_SCACHE
390 select GENERIC_ISA_DMA_SUPPORT_BROKEN
392 select SGI_HAS_INDYDOG
398 select SYS_HAS_CPU_R4X00
399 select SYS_HAS_CPU_R5000
401 # Disable EARLY_PRINTK for now since it leads to overwritten prom
402 # memory during early boot on some machines.
404 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
405 # for a more details discussion
407 # select SYS_HAS_EARLY_PRINTK
408 select SYS_SUPPORTS_32BIT_KERNEL
409 select SYS_SUPPORTS_64BIT_KERNEL
410 select SYS_SUPPORTS_BIG_ENDIAN
412 This are the SGI Indy, Challenge S and Indigo2, as well as certain
413 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
414 that runs on these, say Y here.
417 bool "SGI IP27 (Origin200/2000)"
421 select DEFAULT_SGI_PARTITION
423 select SYS_HAS_EARLY_PRINTK
425 select NR_CPUS_DEFAULT_64
426 select SYS_HAS_CPU_R10000
427 select SYS_SUPPORTS_64BIT_KERNEL
428 select SYS_SUPPORTS_BIG_ENDIAN
429 select SYS_SUPPORTS_NUMA
430 select SYS_SUPPORTS_SMP
432 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
433 workstations. To compile a Linux kernel that runs on these, say Y
437 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
438 depends on EXPERIMENTAL
444 select DEFAULT_SGI_PARTITION
445 select DMA_NONCOHERENT
446 select GENERIC_ISA_DMA_SUPPORT_BROKEN
452 select SGI_HAS_INDYDOG
458 select SYS_HAS_CPU_R10000
460 # Disable EARLY_PRINTK for now since it leads to overwritten prom
461 # memory during early boot on some machines.
463 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
464 # for a more details discussion
466 # select SYS_HAS_EARLY_PRINTK
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
470 This is the SGI Indigo2 with R10000 processor. To compile a Linux
471 kernel that runs on these, say Y here.
480 select DMA_NONCOHERENT
483 select R5000_CPU_SCACHE
484 select RM7000_CPU_SCACHE
485 select SYS_HAS_CPU_R5000
486 select SYS_HAS_CPU_R10000 if BROKEN
487 select SYS_HAS_CPU_RM7000
488 select SYS_HAS_CPU_NEVADA
489 select SYS_SUPPORTS_64BIT_KERNEL
490 select SYS_SUPPORTS_BIG_ENDIAN
492 If you want this kernel to run on SGI O2 workstation, say Y here.
495 bool "Sibyte BCM91120C-CRhine"
496 depends on EXPERIMENTAL
499 select SIBYTE_BCM1120
501 select SYS_HAS_CPU_SB1
502 select SYS_SUPPORTS_BIG_ENDIAN
503 select SYS_SUPPORTS_LITTLE_ENDIAN
506 bool "Sibyte BCM91120x-Carmel"
507 depends on EXPERIMENTAL
510 select SIBYTE_BCM1120
512 select SYS_HAS_CPU_SB1
513 select SYS_SUPPORTS_BIG_ENDIAN
514 select SYS_SUPPORTS_LITTLE_ENDIAN
517 bool "Sibyte BCM91125C-CRhone"
518 depends on EXPERIMENTAL
521 select SIBYTE_BCM1125
523 select SYS_HAS_CPU_SB1
524 select SYS_SUPPORTS_BIG_ENDIAN
525 select SYS_SUPPORTS_HIGHMEM
526 select SYS_SUPPORTS_LITTLE_ENDIAN
529 bool "Sibyte BCM91125E-Rhone"
530 depends on EXPERIMENTAL
533 select SIBYTE_BCM1125H
535 select SYS_HAS_CPU_SB1
536 select SYS_SUPPORTS_BIG_ENDIAN
537 select SYS_SUPPORTS_LITTLE_ENDIAN
540 bool "Sibyte BCM91250A-SWARM"
543 select HAVE_PATA_PLATFORM
544 select NR_CPUS_DEFAULT_2
547 select SYS_HAS_CPU_SB1
548 select SYS_SUPPORTS_BIG_ENDIAN
549 select SYS_SUPPORTS_HIGHMEM
550 select SYS_SUPPORTS_LITTLE_ENDIAN
551 select ZONE_DMA32 if 64BIT
553 config SIBYTE_LITTLESUR
554 bool "Sibyte BCM91250C2-LittleSur"
555 depends on EXPERIMENTAL
558 select HAVE_PATA_PLATFORM
559 select NR_CPUS_DEFAULT_2
562 select SYS_HAS_CPU_SB1
563 select SYS_SUPPORTS_BIG_ENDIAN
564 select SYS_SUPPORTS_HIGHMEM
565 select SYS_SUPPORTS_LITTLE_ENDIAN
567 config SIBYTE_SENTOSA
568 bool "Sibyte BCM91250E-Sentosa"
569 depends on EXPERIMENTAL
572 select NR_CPUS_DEFAULT_2
575 select SYS_HAS_CPU_SB1
576 select SYS_SUPPORTS_BIG_ENDIAN
577 select SYS_SUPPORTS_LITTLE_ENDIAN
580 bool "Sibyte BCM91480B-BigSur"
583 select NR_CPUS_DEFAULT_4
584 select SIBYTE_BCM1x80
586 select SYS_HAS_CPU_SB1
587 select SYS_SUPPORTS_BIG_ENDIAN
588 select SYS_SUPPORTS_HIGHMEM
589 select SYS_SUPPORTS_LITTLE_ENDIAN
590 select ZONE_DMA32 if 64BIT
593 bool "SNI RM200/300/400"
594 select ARC if CPU_LITTLE_ENDIAN
595 select ARC32 if CPU_LITTLE_ENDIAN
596 select SNIPROM if CPU_BIG_ENDIAN
597 select ARCH_MAY_HAVE_PC_FDC
601 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
602 select DMA_NONCOHERENT
603 select GENERIC_ISA_DMA
610 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
611 select SYS_HAS_CPU_R4X00
612 select SYS_HAS_CPU_R5000
613 select SYS_HAS_CPU_R10000
614 select R5000_CPU_SCACHE
615 select SYS_HAS_EARLY_PRINTK
616 select SYS_SUPPORTS_32BIT_KERNEL
617 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
618 select SYS_SUPPORTS_BIG_ENDIAN
619 select SYS_SUPPORTS_HIGHMEM
620 select SYS_SUPPORTS_LITTLE_ENDIAN
622 The SNI RM200/300/400 are MIPS-based machines manufactured by
623 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
624 Technology and now in turn merged with Fujitsu. Say Y here to
625 support this machine type.
628 bool "Toshiba TX39 series based machines"
631 bool "Toshiba TX49 series based machines"
633 config MIKROTIK_RB532
634 bool "Mikrotik RB532 boards"
637 select DMA_NONCOHERENT
640 select SYS_HAS_CPU_MIPS32_R1
641 select SYS_SUPPORTS_32BIT_KERNEL
642 select SYS_SUPPORTS_LITTLE_ENDIAN
645 select ARCH_REQUIRE_GPIOLIB
647 Support the Mikrotik(tm) RouterBoard 532 series,
648 based on the IDT RC32434 SoC.
651 bool "Wind River PPMC board"
656 select DMA_NONCOHERENT
658 select PCI_GT64XXX_PCI0
660 select SYS_HAS_CPU_MIPS32_R1
661 select SYS_HAS_CPU_MIPS32_R2
662 select SYS_HAS_CPU_MIPS64_R1
663 select SYS_HAS_CPU_NEVADA
664 select SYS_HAS_CPU_RM7000
665 select SYS_SUPPORTS_32BIT_KERNEL
666 select SYS_SUPPORTS_64BIT_KERNEL
667 select SYS_SUPPORTS_BIG_ENDIAN
668 select SYS_SUPPORTS_LITTLE_ENDIAN
670 This enables support for the Wind River MIPS32 4KC PPMC evaluation
671 board, which is based on GT64120 bridge chip.
673 config CAVIUM_OCTEON_SIMULATOR
674 bool "Cavium Networks Octeon Simulator"
676 select 64BIT_PHYS_ADDR
678 select SYS_SUPPORTS_64BIT_KERNEL
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_HIGHMEM
681 select SYS_SUPPORTS_HOTPLUG_CPU
682 select SYS_HAS_CPU_CAVIUM_OCTEON
684 The Octeon simulator is software performance model of the Cavium
685 Octeon Processor. It supports simulating Octeon processors on x86
688 config CAVIUM_OCTEON_REFERENCE_BOARD
689 bool "Cavium Networks Octeon reference board"
691 select 64BIT_PHYS_ADDR
693 select SYS_SUPPORTS_64BIT_KERNEL
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select SYS_SUPPORTS_HIGHMEM
696 select SYS_SUPPORTS_HOTPLUG_CPU
697 select SYS_HAS_EARLY_PRINTK
698 select SYS_HAS_CPU_CAVIUM_OCTEON
701 select ARCH_SUPPORTS_MSI
703 select USB_ARCH_HAS_OHCI
704 select USB_ARCH_HAS_EHCI
706 This option supports all of the Octeon reference boards from Cavium
707 Networks. It builds a kernel that dynamically determines the Octeon
708 CPU type and supports all known board reference implementations.
709 Some of the supported boards are:
716 Say Y here for most Octeon reference boards.
720 source "arch/mips/alchemy/Kconfig"
721 source "arch/mips/bcm63xx/Kconfig"
722 source "arch/mips/jazz/Kconfig"
723 source "arch/mips/jz4740/Kconfig"
724 source "arch/mips/lasat/Kconfig"
725 source "arch/mips/pmc-sierra/Kconfig"
726 source "arch/mips/powertv/Kconfig"
727 source "arch/mips/sgi-ip27/Kconfig"
728 source "arch/mips/sibyte/Kconfig"
729 source "arch/mips/txx9/Kconfig"
730 source "arch/mips/vr41xx/Kconfig"
731 source "arch/mips/cavium-octeon/Kconfig"
732 source "arch/mips/loongson/Kconfig"
736 config RWSEM_GENERIC_SPINLOCK
740 config RWSEM_XCHGADD_ALGORITHM
743 config ARCH_HAS_ILOG2_U32
747 config ARCH_HAS_ILOG2_U64
751 config ARCH_SUPPORTS_OPROFILE
753 default y if !MIPS_MT_SMTC
755 config GENERIC_FIND_NEXT_BIT
759 config GENERIC_HWEIGHT
763 config GENERIC_CALIBRATE_DELAY
767 config GENERIC_CLOCKEVENTS
771 config GENERIC_CMOS_UPDATE
775 config SCHED_OMIT_FRAME_POINTER
779 config GENERIC_HARDIRQS_NO__DO_IRQ
783 # Select some configuration options automatically based on user selections.
788 config ARCH_MAY_HAVE_PC_FDC
837 select ARCH_REQUIRE_GPIOLIB
846 config DMA_NONCOHERENT
848 select NEED_DMA_MAP_STATE
850 config NEED_DMA_MAP_STATE
853 config SYS_HAS_EARLY_PRINTK
857 bool "Support for hot-pluggable CPUs"
858 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
860 Say Y here to allow turning CPUs off and on. CPUs can be
861 controlled through /sys/devices/system/cpu.
862 (Note: power management support will enable this option
863 automatically on SMP systems. )
864 Say N if you want to disable CPU hotplug.
866 config SYS_SUPPORTS_HOTPLUG_CPU
881 config MIPS_DISABLE_OBSOLETE_IDE
893 config GENERIC_ISA_DMA
895 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
898 config GENERIC_ISA_DMA_SUPPORT_BROKEN
900 select GENERIC_ISA_DMA
909 # Endianess selection. Sufficiently obscure so many users don't know what to
910 # answer,so we try hard to limit the available choices. Also the use of a
911 # choice statement should be more obvious to the user.
914 prompt "Endianess selection"
916 Some MIPS machines can be configured for either little or big endian
917 byte order. These modes require different kernels and a different
918 Linux distribution. In general there is one preferred byteorder for a
919 particular system but some systems are just as commonly used in the
920 one or the other endianness.
922 config CPU_BIG_ENDIAN
924 depends on SYS_SUPPORTS_BIG_ENDIAN
926 config CPU_LITTLE_ENDIAN
928 depends on SYS_SUPPORTS_LITTLE_ENDIAN
936 config SYS_SUPPORTS_APM_EMULATION
939 config SYS_SUPPORTS_BIG_ENDIAN
942 config SYS_SUPPORTS_LITTLE_ENDIAN
945 config SYS_SUPPORTS_HUGETLBFS
947 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
974 config IRQ_CPU_OCTEON
977 config MIPS_BOARDS_GEN
980 config PCI_GT64XXX_PCI0
983 config NO_EXCEPT_FILL
994 select DMA_NONCOHERENT
997 select SYS_HAS_CPU_R5500
998 select SYS_SUPPORTS_32BIT_KERNEL
999 select SYS_SUPPORTS_64BIT_KERNEL
1000 select SYS_SUPPORTS_BIG_ENDIAN
1007 select DMA_NONCOHERENT
1008 select SYS_HAS_CPU_MIPS32_R2
1009 select SYS_SUPPORTS_32BIT_KERNEL
1010 select SYS_SUPPORTS_LITTLE_ENDIAN
1011 select SYS_SUPPORTS_BIG_ENDIAN
1013 select CPU_MIPSR2_IRQ_VI
1025 select DMA_NONCOHERENT
1027 select SYS_HAS_CPU_MIPS32_R1
1028 select SYS_HAS_EARLY_PRINTK
1029 select SYS_SUPPORTS_32BIT_KERNEL
1032 config SWAP_IO_SPACE
1035 config SERIAL_RM9000
1038 config SGI_HAS_INDYDOG
1050 config SGI_HAS_ZILOG
1053 config SGI_HAS_I8042
1056 config DEFAULT_SGI_PARTITION
1068 config MIPS_L1_CACHE_SHIFT
1070 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1071 default "6" if MIPS_CPU_SCACHE
1072 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1075 config HAVE_STD_PC_SERIAL_PORT
1079 bool "ARC console support"
1080 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1084 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1089 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1098 menu "CPU selection"
1104 config CPU_LOONGSON2E
1106 depends on SYS_HAS_CPU_LOONGSON2E
1107 select CPU_LOONGSON2
1109 The Loongson 2E processor implements the MIPS III instruction set
1110 with many extensions.
1112 It has an internal FPGA northbridge, which is compatiable to
1115 config CPU_LOONGSON2F
1117 depends on SYS_HAS_CPU_LOONGSON2F
1118 select CPU_LOONGSON2
1120 select ARCH_REQUIRE_GPIOLIB
1122 The Loongson 2F processor implements the MIPS III instruction set
1123 with many extensions.
1125 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1126 have a similar programming interface with FPGA northbridge used in
1129 config CPU_MIPS32_R1
1130 bool "MIPS32 Release 1"
1131 depends on SYS_HAS_CPU_MIPS32_R1
1132 select CPU_HAS_PREFETCH
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_HIGHMEM
1136 Choose this option to build a kernel for release 1 or later of the
1137 MIPS32 architecture. Most modern embedded systems with a 32-bit
1138 MIPS processor are based on a MIPS32 processor. If you know the
1139 specific type of processor in your system, choose those that one
1140 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1141 Release 2 of the MIPS32 architecture is available since several
1142 years so chances are you even have a MIPS32 Release 2 processor
1143 in which case you should choose CPU_MIPS32_R2 instead for better
1146 config CPU_MIPS32_R2
1147 bool "MIPS32 Release 2"
1148 depends on SYS_HAS_CPU_MIPS32_R2
1149 select CPU_HAS_PREFETCH
1150 select CPU_SUPPORTS_32BIT_KERNEL
1151 select CPU_SUPPORTS_HIGHMEM
1153 Choose this option to build a kernel for release 2 or later of the
1154 MIPS32 architecture. Most modern embedded systems with a 32-bit
1155 MIPS processor are based on a MIPS32 processor. If you know the
1156 specific type of processor in your system, choose those that one
1157 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1159 config CPU_MIPS64_R1
1160 bool "MIPS64 Release 1"
1161 depends on SYS_HAS_CPU_MIPS64_R1
1162 select CPU_HAS_PREFETCH
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1165 select CPU_SUPPORTS_HIGHMEM
1166 select CPU_SUPPORTS_HUGEPAGES
1168 Choose this option to build a kernel for release 1 or later of the
1169 MIPS64 architecture. Many modern embedded systems with a 64-bit
1170 MIPS processor are based on a MIPS64 processor. If you know the
1171 specific type of processor in your system, choose those that one
1172 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1173 Release 2 of the MIPS64 architecture is available since several
1174 years so chances are you even have a MIPS64 Release 2 processor
1175 in which case you should choose CPU_MIPS64_R2 instead for better
1178 config CPU_MIPS64_R2
1179 bool "MIPS64 Release 2"
1180 depends on SYS_HAS_CPU_MIPS64_R2
1181 select CPU_HAS_PREFETCH
1182 select CPU_SUPPORTS_32BIT_KERNEL
1183 select CPU_SUPPORTS_64BIT_KERNEL
1184 select CPU_SUPPORTS_HIGHMEM
1185 select CPU_SUPPORTS_HUGEPAGES
1187 Choose this option to build a kernel for release 2 or later of the
1188 MIPS64 architecture. Many modern embedded systems with a 64-bit
1189 MIPS processor are based on a MIPS64 processor. If you know the
1190 specific type of processor in your system, choose those that one
1191 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1195 depends on SYS_HAS_CPU_R3000
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1200 Please make sure to pick the right CPU type. Linux/MIPS is not
1201 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1202 *not* work on R4000 machines and vice versa. However, since most
1203 of the supported machines have an R4000 (or similar) CPU, R4x00
1204 might be a safe bet. If the resulting kernel does not work,
1205 try to recompile with R3000.
1209 depends on SYS_HAS_CPU_TX39XX
1210 select CPU_SUPPORTS_32BIT_KERNEL
1214 depends on SYS_HAS_CPU_VR41XX
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1218 The options selects support for the NEC VR4100 series of processors.
1219 Only choose this option if you have one of these processors as a
1220 kernel built with this option will not run on any other type of
1221 processor or vice versa.
1225 depends on SYS_HAS_CPU_R4300
1226 select CPU_SUPPORTS_32BIT_KERNEL
1227 select CPU_SUPPORTS_64BIT_KERNEL
1229 MIPS Technologies R4300-series processors.
1233 depends on SYS_HAS_CPU_R4X00
1234 select CPU_SUPPORTS_32BIT_KERNEL
1235 select CPU_SUPPORTS_64BIT_KERNEL
1237 MIPS Technologies R4000-series processors other than 4300, including
1238 the R4000, R4400, R4600, and 4700.
1242 depends on SYS_HAS_CPU_TX49XX
1243 select CPU_HAS_PREFETCH
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1249 depends on SYS_HAS_CPU_R5000
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_64BIT_KERNEL
1253 MIPS Technologies R5000-series processors other than the Nevada.
1257 depends on SYS_HAS_CPU_R5432
1258 select CPU_SUPPORTS_32BIT_KERNEL
1259 select CPU_SUPPORTS_64BIT_KERNEL
1263 depends on SYS_HAS_CPU_R5500
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_64BIT_KERNEL
1266 select CPU_SUPPORTS_HUGEPAGES
1268 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1273 depends on EXPERIMENTAL
1274 depends on SYS_HAS_CPU_R6000
1275 select CPU_SUPPORTS_32BIT_KERNEL
1277 MIPS Technologies R6000 and R6000A series processors. Note these
1278 processors are extremely rare and the support for them is incomplete.
1282 depends on SYS_HAS_CPU_NEVADA
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_64BIT_KERNEL
1286 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1290 depends on EXPERIMENTAL
1291 depends on SYS_HAS_CPU_R8000
1292 select CPU_HAS_PREFETCH
1293 select CPU_SUPPORTS_64BIT_KERNEL
1295 MIPS Technologies R8000 processors. Note these processors are
1296 uncommon and the support for them is incomplete.
1300 depends on SYS_HAS_CPU_R10000
1301 select CPU_HAS_PREFETCH
1302 select CPU_SUPPORTS_32BIT_KERNEL
1303 select CPU_SUPPORTS_64BIT_KERNEL
1304 select CPU_SUPPORTS_HIGHMEM
1306 MIPS Technologies R10000-series processors.
1310 depends on SYS_HAS_CPU_RM7000
1311 select CPU_HAS_PREFETCH
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_64BIT_KERNEL
1314 select CPU_SUPPORTS_HIGHMEM
1318 depends on SYS_HAS_CPU_RM9000
1319 select CPU_HAS_PREFETCH
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1322 select CPU_SUPPORTS_HIGHMEM
1323 select WEAK_ORDERING
1327 depends on SYS_HAS_CPU_SB1
1328 select CPU_SUPPORTS_32BIT_KERNEL
1329 select CPU_SUPPORTS_64BIT_KERNEL
1330 select CPU_SUPPORTS_HIGHMEM
1331 select WEAK_ORDERING
1333 config CPU_CAVIUM_OCTEON
1334 bool "Cavium Octeon processor"
1335 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1337 select IRQ_CPU_OCTEON
1338 select CPU_HAS_PREFETCH
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select SYS_SUPPORTS_SMP
1341 select NR_CPUS_DEFAULT_16
1342 select WEAK_ORDERING
1343 select CPU_SUPPORTS_HIGHMEM
1344 select CPU_SUPPORTS_HUGEPAGES
1346 The Cavium Octeon processor is a highly integrated chip containing
1347 many ethernet hardware widgets for networking tasks. The processor
1348 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1349 Full details can be found at http://www.caviumnetworks.com.
1351 config CPU_BMIPS3300
1353 depends on SYS_HAS_CPU_BMIPS3300
1354 select DMA_NONCOHERENT
1356 select SWAP_IO_SPACE
1357 select SYS_SUPPORTS_32BIT_KERNEL
1358 select WEAK_ORDERING
1360 Broadcom BMIPS3300 processors.
1362 config CPU_BMIPS4350
1364 depends on SYS_HAS_CPU_BMIPS4350
1365 select CPU_SUPPORTS_32BIT_KERNEL
1366 select DMA_NONCOHERENT
1368 select SWAP_IO_SPACE
1369 select SYS_SUPPORTS_SMP
1370 select SYS_SUPPORTS_HOTPLUG_CPU
1371 select WEAK_ORDERING
1373 Broadcom BMIPS4350 ("VIPER") processors.
1375 config CPU_BMIPS4380
1377 depends on SYS_HAS_CPU_BMIPS4380
1378 select CPU_SUPPORTS_32BIT_KERNEL
1379 select DMA_NONCOHERENT
1381 select SWAP_IO_SPACE
1382 select SYS_SUPPORTS_SMP
1383 select SYS_SUPPORTS_HOTPLUG_CPU
1384 select WEAK_ORDERING
1386 Broadcom BMIPS4380 processors.
1388 config CPU_BMIPS5000
1390 depends on SYS_HAS_CPU_BMIPS5000
1391 select CPU_SUPPORTS_32BIT_KERNEL
1392 select CPU_SUPPORTS_HIGHMEM
1393 select DMA_NONCOHERENT
1395 select SWAP_IO_SPACE
1396 select SYS_SUPPORTS_SMP
1397 select SYS_SUPPORTS_HOTPLUG_CPU
1398 select WEAK_ORDERING
1400 Broadcom BMIPS5000 processors.
1405 config CPU_NOP_WORKAROUNDS
1408 config CPU_JUMP_WORKAROUNDS
1411 config CPU_LOONGSON2F_WORKAROUNDS
1412 bool "Loongson 2F Workarounds"
1414 select CPU_NOP_WORKAROUNDS
1415 select CPU_JUMP_WORKAROUNDS
1417 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1418 require workarounds. Without workarounds the system may hang
1419 unexpectedly. For more information please refer to the gas
1420 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1422 Loongson 2F03 and later have fixed these issues and no workarounds
1423 are needed. The workarounds have no significant side effect on them
1424 but may decrease the performance of the system so this option should
1425 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1428 If unsure, please say Y.
1429 endif # CPU_LOONGSON2F
1431 config SYS_SUPPORTS_ZBOOT
1433 select HAVE_KERNEL_GZIP
1434 select HAVE_KERNEL_BZIP2
1435 select HAVE_KERNEL_LZMA
1436 select HAVE_KERNEL_LZO
1438 config SYS_SUPPORTS_ZBOOT_UART16550
1440 select SYS_SUPPORTS_ZBOOT
1442 config CPU_LOONGSON2
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_64BIT_KERNEL
1446 select CPU_SUPPORTS_HIGHMEM
1448 config SYS_HAS_CPU_LOONGSON2E
1451 config SYS_HAS_CPU_LOONGSON2F
1453 select CPU_SUPPORTS_CPUFREQ
1454 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1455 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1457 config SYS_HAS_CPU_MIPS32_R1
1460 config SYS_HAS_CPU_MIPS32_R2
1463 config SYS_HAS_CPU_MIPS64_R1
1466 config SYS_HAS_CPU_MIPS64_R2
1469 config SYS_HAS_CPU_R3000
1472 config SYS_HAS_CPU_TX39XX
1475 config SYS_HAS_CPU_VR41XX
1478 config SYS_HAS_CPU_R4300
1481 config SYS_HAS_CPU_R4X00
1484 config SYS_HAS_CPU_TX49XX
1487 config SYS_HAS_CPU_R5000
1490 config SYS_HAS_CPU_R5432
1493 config SYS_HAS_CPU_R5500
1496 config SYS_HAS_CPU_R6000
1499 config SYS_HAS_CPU_NEVADA
1502 config SYS_HAS_CPU_R8000
1505 config SYS_HAS_CPU_R10000
1508 config SYS_HAS_CPU_RM7000
1511 config SYS_HAS_CPU_RM9000
1514 config SYS_HAS_CPU_SB1
1517 config SYS_HAS_CPU_CAVIUM_OCTEON
1520 config SYS_HAS_CPU_BMIPS3300
1523 config SYS_HAS_CPU_BMIPS4350
1526 config SYS_HAS_CPU_BMIPS4380
1529 config SYS_HAS_CPU_BMIPS5000
1533 # CPU may reorder R->R, R->W, W->R, W->W
1534 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1536 config WEAK_ORDERING
1540 # CPU may reorder reads and writes beyond LL/SC
1541 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1543 config WEAK_REORDERING_BEYOND_LLSC
1548 # These two indicate any level of the MIPS32 and MIPS64 architecture
1552 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1556 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1559 # These two indicate the revision of the architecture, either Release 1 or Release 2
1563 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1567 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1569 config SYS_SUPPORTS_32BIT_KERNEL
1571 config SYS_SUPPORTS_64BIT_KERNEL
1573 config CPU_SUPPORTS_32BIT_KERNEL
1575 config CPU_SUPPORTS_64BIT_KERNEL
1577 config CPU_SUPPORTS_CPUFREQ
1579 config CPU_SUPPORTS_ADDRWINCFG
1581 config CPU_SUPPORTS_HUGEPAGES
1583 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1585 config MIPS_PGD_C0_CONTEXT
1587 default y if 64BIT && CPU_MIPSR2
1590 # Set to y for ptrace access to watch registers.
1592 config HARDWARE_WATCHPOINTS
1594 default y if CPU_MIPSR1 || CPU_MIPSR2
1600 prompt "Kernel code model"
1602 You should only select this option if you have a workload that
1603 actually benefits from 64-bit processing or if your machine has
1604 large memory. You will only be presented a single option in this
1605 menu if your system does not support both 32-bit and 64-bit kernels.
1608 bool "32-bit kernel"
1609 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1612 Select this option if you want to build a 32-bit kernel.
1614 bool "64-bit kernel"
1615 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1616 select HAVE_SYSCALL_WRAPPERS
1618 Select this option if you want to build a 64-bit kernel.
1623 prompt "Kernel page size"
1624 default PAGE_SIZE_4KB
1626 config PAGE_SIZE_4KB
1628 depends on !CPU_LOONGSON2
1630 This option select the standard 4kB Linux page size. On some
1631 R3000-family processors this is the only available page size. Using
1632 4kB page size will minimize memory consumption and is therefore
1633 recommended for low memory systems.
1635 config PAGE_SIZE_8KB
1637 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1639 Using 8kB page size will result in higher performance kernel at
1640 the price of higher memory consumption. This option is available
1641 only on R8000 and cnMIPS processors. Note that you will need a
1642 suitable Linux distribution to support this.
1644 config PAGE_SIZE_16KB
1646 depends on !CPU_R3000 && !CPU_TX39XX
1648 Using 16kB page size will result in higher performance kernel at
1649 the price of higher memory consumption. This option is available on
1650 all non-R3000 family processors. Note that you will need a suitable
1651 Linux distribution to support this.
1653 config PAGE_SIZE_32KB
1655 depends on CPU_CAVIUM_OCTEON
1657 Using 32kB page size will result in higher performance kernel at
1658 the price of higher memory consumption. This option is available
1659 only on cnMIPS cores. Note that you will need a suitable Linux
1660 distribution to support this.
1662 config PAGE_SIZE_64KB
1664 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1666 Using 64kB page size will result in higher performance kernel at
1667 the price of higher memory consumption. This option is available on
1668 all non-R3000 family processor. Not that at the time of this
1669 writing this option is still high experimental.
1673 config FORCE_MAX_ZONEORDER
1674 int "Maximum zone order"
1675 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1676 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1677 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1678 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1682 The kernel memory allocator divides physically contiguous memory
1683 blocks into "zones", where each zone is a power of two number of
1684 pages. This option selects the largest power of two that the kernel
1685 keeps in the memory allocator. If you need to allocate very large
1686 blocks of physically contiguous memory, then you may need to
1687 increase this value.
1689 This config option is actually maximum order plus one. For example,
1690 a value of 11 means that the largest free memory block is 2^10 pages.
1692 The page size is not necessarily 4KB. Keep this in mind
1693 when choosing a value for this option.
1698 config IP22_CPU_SCACHE
1703 # Support for a MIPS32 / MIPS64 style S-caches
1705 config MIPS_CPU_SCACHE
1709 config R5000_CPU_SCACHE
1713 config RM7000_CPU_SCACHE
1717 config SIBYTE_DMA_PAGEOPS
1718 bool "Use DMA to clear/copy pages"
1721 Instead of using the CPU to zero and copy pages, use a Data Mover
1722 channel. These DMA channels are otherwise unused by the standard
1723 SiByte Linux port. Seems to give a small performance benefit.
1725 config CPU_HAS_PREFETCH
1729 prompt "MIPS MT options"
1731 config MIPS_MT_DISABLED
1732 bool "Disable multithreading support."
1734 Use this option if your workload can't take advantage of
1735 MIPS hardware multithreading support. On systems that don't have
1736 the option of an MT-enabled processor this option will be the only
1737 option in this menu.
1740 bool "Use 1 TC on each available VPE for SMP"
1741 depends on SYS_SUPPORTS_MULTITHREADING
1742 select CPU_MIPSR2_IRQ_VI
1743 select CPU_MIPSR2_IRQ_EI
1745 select NR_CPUS_DEFAULT_2
1747 select SYS_SUPPORTS_SCHED_SMT if SMP
1748 select SYS_SUPPORTS_SMP
1751 This is a kernel model which is known a VSMP but lately has been
1752 marketesed into SMVP.
1753 Virtual SMP uses the processor's VPEs to implement virtual
1754 processors. In currently available configuration of the 34K processor
1755 this allows for a dual processor. Both processors will share the same
1756 primary caches; each will obtain the half of the TLB for it's own
1757 exclusive use. For a layman this model can be described as similar to
1758 what Intel calls Hyperthreading.
1760 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1763 bool "SMTC: Use all TCs on all VPEs for SMP"
1764 depends on CPU_MIPS32_R2
1765 #depends on CPU_MIPS64_R2 # once there is hardware ...
1766 depends on SYS_SUPPORTS_MULTITHREADING
1767 select CPU_MIPSR2_IRQ_VI
1768 select CPU_MIPSR2_IRQ_EI
1770 select NR_CPUS_DEFAULT_8
1772 select SYS_SUPPORTS_SMP
1775 This is a kernel model which is known a SMTC or lately has been
1776 marketesed into SMVP.
1777 is presenting the available TC's of the core as processors to Linux.
1778 On currently available 34K processors this means a Linux system will
1779 see up to 5 processors. The implementation of the SMTC kernel differs
1780 significantly from VSMP and cannot efficiently coexist in the same
1781 kernel binary so the choice between VSMP and SMTC is a compile time
1784 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1792 bool "SMT (multithreading) scheduler support"
1793 depends on SYS_SUPPORTS_SCHED_SMT
1796 SMT scheduler support improves the CPU scheduler's decision making
1797 when dealing with MIPS MT enabled cores at a cost of slightly
1798 increased overhead in some places. If unsure say N here.
1800 config SYS_SUPPORTS_SCHED_SMT
1804 config SYS_SUPPORTS_MULTITHREADING
1807 config MIPS_MT_FPAFF
1808 bool "Dynamic FPU affinity for FP-intensive threads"
1810 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1812 config MIPS_VPE_LOADER
1813 bool "VPE loader support."
1814 depends on SYS_SUPPORTS_MULTITHREADING
1815 select CPU_MIPSR2_IRQ_VI
1816 select CPU_MIPSR2_IRQ_EI
1819 Includes a loader for loading an elf relocatable object
1820 onto another VPE and running it.
1822 config MIPS_MT_SMTC_IM_BACKSTOP
1823 bool "Use per-TC register bits as backstop for inhibited IM bits"
1824 depends on MIPS_MT_SMTC
1827 To support multiple TC microthreads acting as "CPUs" within
1828 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1829 during interrupt handling. To support legacy drivers and interrupt
1830 controller management code, SMTC has a "backstop" to track and
1831 if necessary restore the interrupt mask. This has some performance
1832 impact on interrupt service overhead.
1834 config MIPS_MT_SMTC_IRQAFF
1835 bool "Support IRQ affinity API"
1836 depends on MIPS_MT_SMTC
1839 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1840 for SMTC Linux kernel. Requires platform support, of which
1841 an example can be found in the MIPS kernel i8259 and Malta
1842 platform code. Adds some overhead to interrupt dispatch, and
1843 should be used only if you know what you are doing.
1845 config MIPS_VPE_LOADER_TOM
1846 bool "Load VPE program into memory hidden from linux"
1847 depends on MIPS_VPE_LOADER
1850 The loader can use memory that is present but has been hidden from
1851 Linux using the kernel command line option "mem=xxMB". It's up to
1852 you to ensure the amount you put in the option and the space your
1853 program requires is less or equal to the amount physically present.
1855 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1856 config MIPS_VPE_APSP_API
1857 bool "Enable support for AP/SP API (RTLX)"
1858 depends on MIPS_VPE_LOADER
1861 config MIPS_APSP_KSPD
1863 depends on MIPS_VPE_APSP_API
1866 KSPD is a kernel daemon that accepts syscall requests from the SP
1867 side, actions them and returns the results. It also handles the
1868 "exit" syscall notifying other kernel modules the SP program is
1869 exiting. You probably want to say yes here.
1872 bool "MIPS CMP framework support"
1873 depends on SYS_SUPPORTS_MIPS_CMP
1875 select SYS_SUPPORTS_SMP
1876 select SYS_SUPPORTS_SCHED_SMT if SMP
1877 select WEAK_ORDERING
1880 This is a placeholder option for the GCMP work. It will need to
1881 be handled differently...
1883 config SB1_PASS_1_WORKAROUNDS
1885 depends on CPU_SB1_PASS_1
1888 config SB1_PASS_2_WORKAROUNDS
1890 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1893 config SB1_PASS_2_1_WORKAROUNDS
1895 depends on CPU_SB1 && CPU_SB1_PASS_2
1898 config 64BIT_PHYS_ADDR
1901 config ARCH_PHYS_ADDR_T_64BIT
1902 def_bool 64BIT_PHYS_ADDR
1904 config CPU_HAS_SMARTMIPS
1905 depends on SYS_SUPPORTS_SMARTMIPS
1906 bool "Support for the SmartMIPS ASE"
1908 SmartMIPS is a extension of the MIPS32 architecture aimed at
1909 increased security at both hardware and software level for
1910 smartcards. Enabling this option will allow proper use of the
1911 SmartMIPS instructions by Linux applications. However a kernel with
1912 this option will not work on a MIPS core without SmartMIPS core. If
1913 you don't know you probably don't have SmartMIPS and should say N
1920 # Vectored interrupt mode is an R2 feature
1922 config CPU_MIPSR2_IRQ_VI
1926 # Extended interrupt mode is an R2 feature
1928 config CPU_MIPSR2_IRQ_EI
1933 depends on !CPU_R3000
1936 config GENERIC_CLOCKEVENTS_BROADCAST
1942 config CPU_DADDI_WORKAROUNDS
1945 config CPU_R4000_WORKAROUNDS
1947 select CPU_R4400_WORKAROUNDS
1949 config CPU_R4400_WORKAROUNDS
1953 # - Highmem only makes sense for the 32-bit kernel.
1954 # - The current highmem code will only work properly on physically indexed
1955 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1956 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1957 # moment we protect the user and offer the highmem option only on machines
1958 # where it's known to be safe. This will not offer highmem on a few systems
1959 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1960 # indexed CPUs but we're playing safe.
1961 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1962 # know they might have memory configurations that could make use of highmem
1966 bool "High Memory Support"
1967 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1969 config CPU_SUPPORTS_HIGHMEM
1972 config SYS_SUPPORTS_HIGHMEM
1975 config SYS_SUPPORTS_SMARTMIPS
1978 config ARCH_FLATMEM_ENABLE
1980 depends on !NUMA && !CPU_LOONGSON2
1982 config ARCH_DISCONTIGMEM_ENABLE
1984 default y if SGI_IP27
1986 Say Y to support efficient handling of discontiguous physical memory,
1987 for architectures which are either NUMA (Non-Uniform Memory Access)
1988 or have huge holes in the physical address space for other reasons.
1989 See <file:Documentation/vm/numa> for more.
1991 config ARCH_POPULATES_NODE_MAP
1994 config ARCH_SPARSEMEM_ENABLE
1996 select SPARSEMEM_STATIC
2000 depends on SYS_SUPPORTS_NUMA
2002 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2003 Access). This option improves performance on systems with more
2004 than two nodes; on two node systems it is generally better to
2005 leave it disabled; on single node systems disable this option
2008 config SYS_SUPPORTS_NUMA
2014 depends on NEED_MULTIPLE_NODES
2016 config HW_PERF_EVENTS
2017 bool "Enable hardware performance counter support for perf events"
2018 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2021 Enable hardware performance counter support for perf events. If
2022 disabled, perf events will use software events only.
2027 bool "Multi-Processing support"
2028 depends on SYS_SUPPORTS_SMP
2030 select USE_GENERIC_SMP_HELPERS
2032 This enables support for systems with more than one CPU. If you have
2033 a system with only one CPU, like most personal computers, say N. If
2034 you have a system with more than one CPU, say Y.
2036 If you say N here, the kernel will run on single and multiprocessor
2037 machines, but will use only one CPU of a multiprocessor machine. If
2038 you say Y here, the kernel will run on many, but not all,
2039 singleprocessor machines. On a singleprocessor machine, the kernel
2040 will run faster if you say N here.
2042 People using multiprocessor machines who say Y here should also say
2043 Y to "Enhanced Real Time Clock Support", below.
2045 See also the SMP-HOWTO available at
2046 <http://www.tldp.org/docs.html#howto>.
2048 If you don't know what to do here, say N.
2053 config SYS_SUPPORTS_MIPS_CMP
2056 config SYS_SUPPORTS_SMP
2059 config NR_CPUS_DEFAULT_1
2062 config NR_CPUS_DEFAULT_2
2065 config NR_CPUS_DEFAULT_4
2068 config NR_CPUS_DEFAULT_8
2071 config NR_CPUS_DEFAULT_16
2074 config NR_CPUS_DEFAULT_32
2077 config NR_CPUS_DEFAULT_64
2081 int "Maximum number of CPUs (2-64)"
2082 range 1 64 if NR_CPUS_DEFAULT_1
2084 default "1" if NR_CPUS_DEFAULT_1
2085 default "2" if NR_CPUS_DEFAULT_2
2086 default "4" if NR_CPUS_DEFAULT_4
2087 default "8" if NR_CPUS_DEFAULT_8
2088 default "16" if NR_CPUS_DEFAULT_16
2089 default "32" if NR_CPUS_DEFAULT_32
2090 default "64" if NR_CPUS_DEFAULT_64
2092 This allows you to specify the maximum number of CPUs which this
2093 kernel will support. The maximum supported value is 32 for 32-bit
2094 kernel and 64 for 64-bit kernels; the minimum value which makes
2095 sense is 1 for Qemu (useful only for kernel debugging purposes)
2096 and 2 for all others.
2098 This is purely to save memory - each supported CPU adds
2099 approximately eight kilobytes to the kernel image. For best
2100 performance should round up your number of processors to the next
2103 source "kernel/time/Kconfig"
2106 # Timer Interrupt Frequency Configuration
2110 prompt "Timer frequency"
2113 Allows the configuration of the timer frequency.
2116 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2119 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2122 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2125 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2128 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2131 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2134 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2138 config SYS_SUPPORTS_48HZ
2141 config SYS_SUPPORTS_100HZ
2144 config SYS_SUPPORTS_128HZ
2147 config SYS_SUPPORTS_250HZ
2150 config SYS_SUPPORTS_256HZ
2153 config SYS_SUPPORTS_1000HZ
2156 config SYS_SUPPORTS_1024HZ
2159 config SYS_SUPPORTS_ARBIT_HZ
2161 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2162 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2163 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2164 !SYS_SUPPORTS_1024HZ
2169 default 100 if HZ_100
2170 default 128 if HZ_128
2171 default 250 if HZ_250
2172 default 256 if HZ_256
2173 default 1000 if HZ_1000
2174 default 1024 if HZ_1024
2176 source "kernel/Kconfig.preempt"
2178 config MIPS_INSANE_LARGE
2179 bool "Support for large 64-bit configurations"
2180 depends on CPU_R10000 && 64BIT
2182 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2183 previous 64-bit processors which only supported 40 bit / 1TB. If you
2184 need processes of more than 1TB virtual address space, say Y here.
2185 This will result in additional memory usage, so it is not
2186 recommended for normal users.
2189 bool "Kexec system call (EXPERIMENTAL)"
2190 depends on EXPERIMENTAL
2192 kexec is a system call that implements the ability to shutdown your
2193 current kernel, and to start another kernel. It is like a reboot
2194 but it is independent of the system firmware. And like a reboot
2195 you can start any kernel with it, not just Linux.
2197 The name comes from the similarity to the exec system call.
2199 It is an ongoing process to be certain the hardware in a machine
2200 is properly shutdown, so do not be surprised if this code does not
2201 initially work for you. It may help to enable device hotplugging
2202 support. As of this writing the exact hardware interface is
2203 strongly in flux, so no good recommendation can be made.
2206 bool "Enable seccomp to safely compute untrusted bytecode"
2210 This kernel feature is useful for number crunching applications
2211 that may need to compute untrusted bytecode during their
2212 execution. By using pipes or other transports made available to
2213 the process as file descriptors supporting the read/write
2214 syscalls, it's possible to isolate those applications in
2215 their own address space using seccomp. Once seccomp is
2216 enabled via /proc/<pid>/seccomp, it cannot be disabled
2217 and the task is only allowed to execute a few safe syscalls
2218 defined by each seccomp mode.
2220 If unsure, say Y. Only embedded should say N here.
2223 bool "Flattened Device Tree support"
2225 select OF_EARLY_FLATTREE
2227 Include support for flattened device tree machine descriptions.
2231 config LOCKDEP_SUPPORT
2235 config STACKTRACE_SUPPORT
2239 source "init/Kconfig"
2241 source "kernel/Kconfig.freezer"
2243 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2251 bool "Support for PCI controller"
2252 depends on HW_HAS_PCI
2255 Find out whether you have a PCI motherboard. PCI is the name of a
2256 bus system, i.e. the way the CPU talks to the other stuff inside
2257 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2263 source "drivers/pci/Kconfig"
2266 # ISA support is now enabled via select. Too many systems still have the one
2267 # or other ISA chip on the board that users don't know about so don't expect
2268 # users to choose the right thing ...
2275 depends on HW_HAS_EISA
2277 select GENERIC_ISA_DMA
2279 The Extended Industry Standard Architecture (EISA) bus was
2280 developed as an open alternative to the IBM MicroChannel bus.
2282 The EISA bus provided some of the features of the IBM MicroChannel
2283 bus while maintaining backward compatibility with cards made for
2284 the older ISA bus. The EISA bus saw limited use between 1988 and
2285 1995 when it was made obsolete by the PCI bus.
2287 Say Y here if you are building a kernel for an EISA-based machine.
2291 source "drivers/eisa/Kconfig"
2294 bool "TURBOchannel support"
2295 depends on MACH_DECSTATION
2297 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2298 processors. TURBOchannel programming specifications are available
2300 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2302 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2303 Linux driver support status is documented at:
2304 <http://www.linux-mips.org/wiki/DECstation>
2307 # bool "Access.Bus support"
2316 select MIPS_EXTERNAL_TIMER
2321 source "drivers/pcmcia/Kconfig"
2323 source "drivers/pci/hotplug/Kconfig"
2327 menu "Executable file formats"
2329 source "fs/Kconfig.binfmt"
2334 config MIPS32_COMPAT
2335 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2338 Select this option if you want Linux/MIPS 32-bit binary
2339 compatibility. Since all software available for Linux/MIPS is
2340 currently 32-bit you should say Y here.
2344 depends on MIPS32_COMPAT
2347 config SYSVIPC_COMPAT
2349 depends on COMPAT && SYSVIPC
2353 bool "Kernel support for o32 binaries"
2354 depends on MIPS32_COMPAT
2356 Select this option if you want to run o32 binaries. These are pure
2357 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2358 existing binaries are in this format.
2363 bool "Kernel support for n32 binaries"
2364 depends on MIPS32_COMPAT
2366 Select this option if you want to run n32 binaries. These are
2367 64-bit binaries using 32-bit quantities for addressing and certain
2368 data that would normally be 64-bit. They are used in special
2375 default y if MIPS32_O32 || MIPS32_N32
2379 menu "Power management options"
2381 config ARCH_HIBERNATION_POSSIBLE
2383 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2385 config ARCH_SUSPEND_POSSIBLE
2387 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2389 source "kernel/power/Kconfig"
2393 source "arch/mips/kernel/cpufreq/Kconfig"
2395 source "net/Kconfig"
2397 source "drivers/Kconfig"
2401 source "arch/mips/Kconfig.debug"
2403 source "security/Kconfig"
2405 source "crypto/Kconfig"
2407 source "lib/Kconfig"