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
23 menu "Machine selection"
33 bool "Alchemy processor based machines"
34 select 64BIT_PHYS_ADDR
38 select SYS_HAS_CPU_MIPS32_R1
39 select SYS_SUPPORTS_32BIT_KERNEL
40 select SYS_SUPPORTS_APM_EMULATION
42 select ARCH_WANT_OPTIONAL_GPIOLIB
43 select SYS_SUPPORTS_ZBOOT
46 bool "Texas Instruments AR7"
48 select DMA_NONCOHERENT
54 select SYS_HAS_CPU_MIPS32_R1
55 select SYS_HAS_EARLY_PRINTK
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_LITTLE_ENDIAN
58 select SYS_SUPPORTS_ZBOOT_UART16550
59 select ARCH_REQUIRE_GPIOLIB
63 Support for the Texas Instruments AR7 System-on-a-Chip
64 family: TNETD7100, 7200 and 7300.
67 bool "Broadcom BCM47XX based boards"
70 select DMA_NONCOHERENT
73 select SYS_HAS_CPU_MIPS32_R1
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_LITTLE_ENDIAN
77 select SSB_DRIVER_MIPS
78 select SSB_DRIVER_EXTIF
80 select SSB_B43_PCI_BRIDGE if PCI
81 select SSB_PCICORE_HOSTMODE if PCI
83 select SYS_HAS_EARLY_PRINTK
86 Support for BCM47XX based boards
89 bool "Broadcom BCM63XX based boards"
92 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_BIG_ENDIAN
97 select SYS_HAS_EARLY_PRINTK
99 select ARCH_REQUIRE_GPIOLIB
101 Support for BCM63XX based boards
108 select DMA_NONCOHERENT
114 select PCI_GT64XXX_PCI0
116 select SYS_HAS_CPU_NEVADA
117 select SYS_HAS_EARLY_PRINTK
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
122 config MACH_DECSTATION
129 select CPU_DADDI_WORKAROUNDS if 64BIT
130 select CPU_R4000_WORKAROUNDS if 64BIT
131 select CPU_R4400_WORKAROUNDS if 64BIT
132 select DMA_NONCOHERENT
135 select SYS_HAS_CPU_R3000
136 select SYS_HAS_CPU_R4X00
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
139 select SYS_SUPPORTS_LITTLE_ENDIAN
140 select SYS_SUPPORTS_128HZ
141 select SYS_SUPPORTS_256HZ
142 select SYS_SUPPORTS_1024HZ
144 This enables support for DEC's MIPS based workstations. For details
145 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
146 DECstation porting pages on <http://decstation.unix-ag.org/>.
148 If you have one of the following DECstation Models you definitely
149 want to choose R4xx0 for the CPU Type:
156 otherwise choose R3000.
159 bool "Jazz family of machines"
162 select ARCH_MAY_HAVE_PC_FDC
165 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
166 select GENERIC_ISA_DMA
171 select SYS_HAS_CPU_R4X00
172 select SYS_SUPPORTS_32BIT_KERNEL
173 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
174 select SYS_SUPPORTS_100HZ
176 This a family of machines based on the MIPS R4030 chipset which was
177 used by several vendors to build RISC/os and Windows NT workstations.
178 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
179 Olivetti M700-10 workstations.
182 bool "Ingenic JZ4740 based machines"
183 select SYS_HAS_CPU_MIPS32_R1
184 select SYS_SUPPORTS_32BIT_KERNEL
185 select SYS_SUPPORTS_LITTLE_ENDIAN
186 select DMA_NONCOHERENT
189 select ARCH_REQUIRE_GPIOLIB
190 select SYS_HAS_EARLY_PRINTK
194 bool "LASAT Networks platforms"
197 select DMA_NONCOHERENT
198 select SYS_HAS_EARLY_PRINTK
201 select PCI_GT64XXX_PCI0
203 select R5000_CPU_SCACHE
204 select SYS_HAS_CPU_R5000
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
207 select SYS_SUPPORTS_LITTLE_ENDIAN
210 bool "Loongson family of machines"
211 select SYS_SUPPORTS_ZBOOT
213 This enables the support of Loongson family of machines.
215 Loongson is a family of general-purpose MIPS-compatible CPUs.
216 developed at Institute of Computing Technology (ICT),
217 Chinese Academy of Sciences (CAS) in the People's Republic
218 of China. The chief architect is Professor Weiwu Hu.
221 bool "MIPS Malta board"
222 select ARCH_MAY_HAVE_PC_FDC
227 select DMA_NONCOHERENT
228 select GENERIC_ISA_DMA
234 select MIPS_BOARDS_GEN
236 select MIPS_CPU_SCACHE
237 select PCI_GT64XXX_PCI0
240 select SYS_HAS_CPU_MIPS32_R1
241 select SYS_HAS_CPU_MIPS32_R2
242 select SYS_HAS_CPU_MIPS64_R1
243 select SYS_HAS_CPU_NEVADA
244 select SYS_HAS_CPU_RM7000
245 select SYS_HAS_EARLY_PRINTK
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_64BIT_KERNEL
248 select SYS_SUPPORTS_BIG_ENDIAN
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_SUPPORTS_MIPS_CMP
251 select SYS_SUPPORTS_MULTITHREADING
252 select SYS_SUPPORTS_SMARTMIPS
253 select SYS_SUPPORTS_ZBOOT
255 This enables support for the MIPS Technologies Malta evaluation
259 bool 'MIPS simulator (MIPSsim)'
262 select DMA_NONCOHERENT
263 select SYS_HAS_EARLY_PRINTK
266 select SYS_HAS_CPU_MIPS32_R1
267 select SYS_HAS_CPU_MIPS32_R2
268 select SYS_HAS_EARLY_PRINTK
269 select SYS_SUPPORTS_32BIT_KERNEL
270 select SYS_SUPPORTS_BIG_ENDIAN
271 select SYS_SUPPORTS_MULTITHREADING
272 select SYS_SUPPORTS_LITTLE_ENDIAN
274 This option enables support for MIPS Technologies MIPSsim software
278 bool "NEC EMMA2RH Mark-eins board"
282 This enables support for the NEC Electronics Mark-eins boards.
285 bool "NEC VR4100 series based machines"
288 select SYS_HAS_CPU_VR41XX
289 select ARCH_REQUIRE_GPIOLIB
292 bool "NXP STB220 board"
295 Support for NXP Semiconductors STB220 Development Board.
302 Support for NXP Semiconductors STB225 Development Board.
305 bool "NXP PNX8550 based JBS board"
307 select SYS_SUPPORTS_LITTLE_ENDIAN
309 config PNX8550_STB810
310 bool "NXP PNX8550 based STB810 board"
312 select SYS_SUPPORTS_LITTLE_ENDIAN
315 bool "PMC-Sierra MSP chipsets"
316 depends on EXPERIMENTAL
317 select DMA_NONCOHERENT
319 select NO_EXCEPT_FILL
321 select SYS_HAS_CPU_MIPS32_R1
322 select SYS_HAS_CPU_MIPS32_R2
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_BIG_ENDIAN
327 select SERIAL_8250_CONSOLE
329 This adds support for the PMC-Sierra family of Multi-Service
330 Processor System-On-A-Chips. These parts include a number
331 of integrated peripherals, interfaces and DSPs in addition to
332 a variety of MIPS cores.
335 bool "PMC-Sierra Yosemite eval board"
344 select SYS_HAS_CPU_RM9000
345 select SYS_HAS_EARLY_PRINTK
346 select SYS_SUPPORTS_32BIT_KERNEL
347 select SYS_SUPPORTS_64BIT_KERNEL
348 select SYS_SUPPORTS_BIG_ENDIAN
349 select SYS_SUPPORTS_HIGHMEM
350 select SYS_SUPPORTS_SMP
352 Yosemite is an evaluation board for the RM9000x2 processor
353 manufactured by PMC-Sierra.
359 select CPU_MIPSR2_IRQ_VI
360 select CPU_MIPSR2_IRQ_EI
362 select DMA_NONCOHERENT
364 select SYS_HAS_EARLY_PRINTK
365 select SYS_HAS_CPU_MIPS32_R2
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_BIG_ENDIAN
368 select SYS_SUPPORTS_HIGHMEM
369 select USB_OHCI_LITTLE_ENDIAN
371 This enables support for the Cisco PowerTV Platform.
374 bool "SGI IP22 (Indy/Indigo2)"
380 select DEFAULT_SGI_PARTITION
381 select DMA_NONCOHERENT
385 select IP22_CPU_SCACHE
387 select GENERIC_ISA_DMA_SUPPORT_BROKEN
389 select SGI_HAS_INDYDOG
395 select SYS_HAS_CPU_R4X00
396 select SYS_HAS_CPU_R5000
398 # Disable EARLY_PRINTK for now since it leads to overwritten prom
399 # memory during early boot on some machines.
401 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
402 # for a more details discussion
404 # select SYS_HAS_EARLY_PRINTK
405 select SYS_SUPPORTS_32BIT_KERNEL
406 select SYS_SUPPORTS_64BIT_KERNEL
407 select SYS_SUPPORTS_BIG_ENDIAN
409 This are the SGI Indy, Challenge S and Indigo2, as well as certain
410 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
411 that runs on these, say Y here.
414 bool "SGI IP27 (Origin200/2000)"
418 select DEFAULT_SGI_PARTITION
420 select SYS_HAS_EARLY_PRINTK
422 select NR_CPUS_DEFAULT_64
423 select SYS_HAS_CPU_R10000
424 select SYS_SUPPORTS_64BIT_KERNEL
425 select SYS_SUPPORTS_BIG_ENDIAN
426 select SYS_SUPPORTS_NUMA
427 select SYS_SUPPORTS_SMP
429 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
430 workstations. To compile a Linux kernel that runs on these, say Y
434 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
435 depends on EXPERIMENTAL
441 select DEFAULT_SGI_PARTITION
442 select DMA_NONCOHERENT
443 select GENERIC_ISA_DMA_SUPPORT_BROKEN
449 select SGI_HAS_INDYDOG
455 select SYS_HAS_CPU_R10000
457 # Disable EARLY_PRINTK for now since it leads to overwritten prom
458 # memory during early boot on some machines.
460 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
461 # for a more details discussion
463 # select SYS_HAS_EARLY_PRINTK
464 select SYS_SUPPORTS_64BIT_KERNEL
465 select SYS_SUPPORTS_BIG_ENDIAN
467 This is the SGI Indigo2 with R10000 processor. To compile a Linux
468 kernel that runs on these, say Y here.
477 select DMA_NONCOHERENT
480 select R5000_CPU_SCACHE
481 select RM7000_CPU_SCACHE
482 select SYS_HAS_CPU_R5000
483 select SYS_HAS_CPU_R10000 if BROKEN
484 select SYS_HAS_CPU_RM7000
485 select SYS_HAS_CPU_NEVADA
486 select SYS_SUPPORTS_64BIT_KERNEL
487 select SYS_SUPPORTS_BIG_ENDIAN
489 If you want this kernel to run on SGI O2 workstation, say Y here.
492 bool "Sibyte BCM91120C-CRhine"
493 depends on EXPERIMENTAL
496 select SIBYTE_BCM1120
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
503 bool "Sibyte BCM91120x-Carmel"
504 depends on EXPERIMENTAL
507 select SIBYTE_BCM1120
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_LITTLE_ENDIAN
514 bool "Sibyte BCM91125C-CRhone"
515 depends on EXPERIMENTAL
518 select SIBYTE_BCM1125
520 select SYS_HAS_CPU_SB1
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_HIGHMEM
523 select SYS_SUPPORTS_LITTLE_ENDIAN
526 bool "Sibyte BCM91125E-Rhone"
527 depends on EXPERIMENTAL
530 select SIBYTE_BCM1125H
532 select SYS_HAS_CPU_SB1
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_LITTLE_ENDIAN
537 bool "Sibyte BCM91250A-SWARM"
540 select HAVE_PATA_PLATFORM
541 select NR_CPUS_DEFAULT_2
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_HIGHMEM
547 select SYS_SUPPORTS_LITTLE_ENDIAN
548 select ZONE_DMA32 if 64BIT
550 config SIBYTE_LITTLESUR
551 bool "Sibyte BCM91250C2-LittleSur"
552 depends on EXPERIMENTAL
555 select HAVE_PATA_PLATFORM
556 select NR_CPUS_DEFAULT_2
559 select SYS_HAS_CPU_SB1
560 select SYS_SUPPORTS_BIG_ENDIAN
561 select SYS_SUPPORTS_HIGHMEM
562 select SYS_SUPPORTS_LITTLE_ENDIAN
564 config SIBYTE_SENTOSA
565 bool "Sibyte BCM91250E-Sentosa"
566 depends on EXPERIMENTAL
569 select NR_CPUS_DEFAULT_2
572 select SYS_HAS_CPU_SB1
573 select SYS_SUPPORTS_BIG_ENDIAN
574 select SYS_SUPPORTS_LITTLE_ENDIAN
577 bool "Sibyte BCM91480B-BigSur"
580 select NR_CPUS_DEFAULT_4
581 select SIBYTE_BCM1x80
583 select SYS_HAS_CPU_SB1
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_HIGHMEM
586 select SYS_SUPPORTS_LITTLE_ENDIAN
587 select ZONE_DMA32 if 64BIT
590 bool "SNI RM200/300/400"
591 select ARC if CPU_LITTLE_ENDIAN
592 select ARC32 if CPU_LITTLE_ENDIAN
593 select SNIPROM if CPU_BIG_ENDIAN
594 select ARCH_MAY_HAVE_PC_FDC
598 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
599 select DMA_NONCOHERENT
600 select GENERIC_ISA_DMA
607 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
608 select SYS_HAS_CPU_R4X00
609 select SYS_HAS_CPU_R5000
610 select SYS_HAS_CPU_R10000
611 select R5000_CPU_SCACHE
612 select SYS_HAS_EARLY_PRINTK
613 select SYS_SUPPORTS_32BIT_KERNEL
614 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select SYS_SUPPORTS_HIGHMEM
617 select SYS_SUPPORTS_LITTLE_ENDIAN
619 The SNI RM200/300/400 are MIPS-based machines manufactured by
620 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
621 Technology and now in turn merged with Fujitsu. Say Y here to
622 support this machine type.
625 bool "Toshiba TX39 series based machines"
628 bool "Toshiba TX49 series based machines"
630 config MIKROTIK_RB532
631 bool "Mikrotik RB532 boards"
634 select DMA_NONCOHERENT
637 select SYS_HAS_CPU_MIPS32_R1
638 select SYS_SUPPORTS_32BIT_KERNEL
639 select SYS_SUPPORTS_LITTLE_ENDIAN
642 select ARCH_REQUIRE_GPIOLIB
644 Support the Mikrotik(tm) RouterBoard 532 series,
645 based on the IDT RC32434 SoC.
648 bool "Wind River PPMC board"
653 select DMA_NONCOHERENT
655 select PCI_GT64XXX_PCI0
657 select SYS_HAS_CPU_MIPS32_R1
658 select SYS_HAS_CPU_MIPS32_R2
659 select SYS_HAS_CPU_MIPS64_R1
660 select SYS_HAS_CPU_NEVADA
661 select SYS_HAS_CPU_RM7000
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_64BIT_KERNEL
664 select SYS_SUPPORTS_BIG_ENDIAN
665 select SYS_SUPPORTS_LITTLE_ENDIAN
667 This enables support for the Wind River MIPS32 4KC PPMC evaluation
668 board, which is based on GT64120 bridge chip.
670 config CAVIUM_OCTEON_SIMULATOR
671 bool "Cavium Networks Octeon Simulator"
673 select 64BIT_PHYS_ADDR
675 select SYS_SUPPORTS_64BIT_KERNEL
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_HIGHMEM
678 select SYS_SUPPORTS_HOTPLUG_CPU
679 select SYS_HAS_CPU_CAVIUM_OCTEON
681 The Octeon simulator is software performance model of the Cavium
682 Octeon Processor. It supports simulating Octeon processors on x86
685 config CAVIUM_OCTEON_REFERENCE_BOARD
686 bool "Cavium Networks Octeon reference board"
688 select 64BIT_PHYS_ADDR
690 select SYS_SUPPORTS_64BIT_KERNEL
691 select SYS_SUPPORTS_BIG_ENDIAN
692 select SYS_SUPPORTS_HIGHMEM
693 select SYS_SUPPORTS_HOTPLUG_CPU
694 select SYS_HAS_EARLY_PRINTK
695 select SYS_HAS_CPU_CAVIUM_OCTEON
698 select ARCH_SUPPORTS_MSI
700 select USB_ARCH_HAS_OHCI
701 select USB_ARCH_HAS_EHCI
703 This option supports all of the Octeon reference boards from Cavium
704 Networks. It builds a kernel that dynamically determines the Octeon
705 CPU type and supports all known board reference implementations.
706 Some of the supported boards are:
713 Say Y here for most Octeon reference boards.
717 source "arch/mips/alchemy/Kconfig"
718 source "arch/mips/bcm63xx/Kconfig"
719 source "arch/mips/jazz/Kconfig"
720 source "arch/mips/jz4740/Kconfig"
721 source "arch/mips/lasat/Kconfig"
722 source "arch/mips/pmc-sierra/Kconfig"
723 source "arch/mips/powertv/Kconfig"
724 source "arch/mips/sgi-ip27/Kconfig"
725 source "arch/mips/sibyte/Kconfig"
726 source "arch/mips/txx9/Kconfig"
727 source "arch/mips/vr41xx/Kconfig"
728 source "arch/mips/cavium-octeon/Kconfig"
729 source "arch/mips/loongson/Kconfig"
733 config RWSEM_GENERIC_SPINLOCK
737 config RWSEM_XCHGADD_ALGORITHM
740 config ARCH_HAS_ILOG2_U32
744 config ARCH_HAS_ILOG2_U64
748 config ARCH_SUPPORTS_OPROFILE
750 default y if !MIPS_MT_SMTC
752 config GENERIC_FIND_NEXT_BIT
756 config GENERIC_HWEIGHT
760 config GENERIC_CALIBRATE_DELAY
764 config GENERIC_CLOCKEVENTS
768 config GENERIC_CMOS_UPDATE
772 config SCHED_OMIT_FRAME_POINTER
776 config GENERIC_HARDIRQS_NO__DO_IRQ
780 # Select some configuration options automatically based on user selections.
785 config ARCH_MAY_HAVE_PC_FDC
834 select ARCH_REQUIRE_GPIOLIB
843 config DMA_NONCOHERENT
845 select NEED_DMA_MAP_STATE
847 config NEED_DMA_MAP_STATE
850 config SYS_HAS_EARLY_PRINTK
854 bool "Support for hot-pluggable CPUs"
855 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
857 Say Y here to allow turning CPUs off and on. CPUs can be
858 controlled through /sys/devices/system/cpu.
859 (Note: power management support will enable this option
860 automatically on SMP systems. )
861 Say N if you want to disable CPU hotplug.
863 config SYS_SUPPORTS_HOTPLUG_CPU
878 config MIPS_DISABLE_OBSOLETE_IDE
887 config GENERIC_ISA_DMA
889 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
892 config GENERIC_ISA_DMA_SUPPORT_BROKEN
894 select GENERIC_ISA_DMA
903 # Endianess selection. Sufficiently obscure so many users don't know what to
904 # answer,so we try hard to limit the available choices. Also the use of a
905 # choice statement should be more obvious to the user.
908 prompt "Endianess selection"
910 Some MIPS machines can be configured for either little or big endian
911 byte order. These modes require different kernels and a different
912 Linux distribution. In general there is one preferred byteorder for a
913 particular system but some systems are just as commonly used in the
914 one or the other endianness.
916 config CPU_BIG_ENDIAN
918 depends on SYS_SUPPORTS_BIG_ENDIAN
920 config CPU_LITTLE_ENDIAN
922 depends on SYS_SUPPORTS_LITTLE_ENDIAN
930 config SYS_SUPPORTS_APM_EMULATION
933 config SYS_SUPPORTS_BIG_ENDIAN
936 config SYS_SUPPORTS_LITTLE_ENDIAN
939 config SYS_SUPPORTS_HUGETLBFS
941 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
968 config IRQ_CPU_OCTEON
971 config MIPS_BOARDS_GEN
974 config PCI_GT64XXX_PCI0
977 config NO_EXCEPT_FILL
988 select DMA_NONCOHERENT
991 select SYS_HAS_CPU_R5500
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_64BIT_KERNEL
994 select SYS_SUPPORTS_BIG_ENDIAN
1001 select DMA_NONCOHERENT
1002 select SYS_HAS_CPU_MIPS32_R2
1003 select SYS_SUPPORTS_32BIT_KERNEL
1004 select SYS_SUPPORTS_LITTLE_ENDIAN
1005 select SYS_SUPPORTS_BIG_ENDIAN
1007 select CPU_MIPSR2_IRQ_VI
1019 select DMA_NONCOHERENT
1021 select SYS_HAS_CPU_MIPS32_R1
1022 select SYS_HAS_EARLY_PRINTK
1023 select SYS_SUPPORTS_32BIT_KERNEL
1026 config SWAP_IO_SPACE
1029 config SERIAL_RM9000
1032 config SGI_HAS_INDYDOG
1044 config SGI_HAS_ZILOG
1047 config SGI_HAS_I8042
1050 config DEFAULT_SGI_PARTITION
1062 config MIPS_L1_CACHE_SHIFT
1064 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1065 default "6" if MIPS_CPU_SCACHE
1066 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1069 config HAVE_STD_PC_SERIAL_PORT
1073 bool "ARC console support"
1074 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1078 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1083 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1092 menu "CPU selection"
1098 config CPU_LOONGSON2E
1100 depends on SYS_HAS_CPU_LOONGSON2E
1101 select CPU_LOONGSON2
1103 The Loongson 2E processor implements the MIPS III instruction set
1104 with many extensions.
1106 It has an internal FPGA northbridge, which is compatiable to
1109 config CPU_LOONGSON2F
1111 depends on SYS_HAS_CPU_LOONGSON2F
1112 select CPU_LOONGSON2
1114 select ARCH_REQUIRE_GPIOLIB
1116 The Loongson 2F processor implements the MIPS III instruction set
1117 with many extensions.
1119 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1120 have a similar programming interface with FPGA northbridge used in
1123 config CPU_MIPS32_R1
1124 bool "MIPS32 Release 1"
1125 depends on SYS_HAS_CPU_MIPS32_R1
1126 select CPU_HAS_PREFETCH
1127 select CPU_SUPPORTS_32BIT_KERNEL
1128 select CPU_SUPPORTS_HIGHMEM
1130 Choose this option to build a kernel for release 1 or later of the
1131 MIPS32 architecture. Most modern embedded systems with a 32-bit
1132 MIPS processor are based on a MIPS32 processor. If you know the
1133 specific type of processor in your system, choose those that one
1134 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1135 Release 2 of the MIPS32 architecture is available since several
1136 years so chances are you even have a MIPS32 Release 2 processor
1137 in which case you should choose CPU_MIPS32_R2 instead for better
1140 config CPU_MIPS32_R2
1141 bool "MIPS32 Release 2"
1142 depends on SYS_HAS_CPU_MIPS32_R2
1143 select CPU_HAS_PREFETCH
1144 select CPU_SUPPORTS_32BIT_KERNEL
1145 select CPU_SUPPORTS_HIGHMEM
1147 Choose this option to build a kernel for release 2 or later of the
1148 MIPS32 architecture. Most modern embedded systems with a 32-bit
1149 MIPS processor are based on a MIPS32 processor. If you know the
1150 specific type of processor in your system, choose those that one
1151 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1153 config CPU_MIPS64_R1
1154 bool "MIPS64 Release 1"
1155 depends on SYS_HAS_CPU_MIPS64_R1
1156 select CPU_HAS_PREFETCH
1157 select CPU_SUPPORTS_32BIT_KERNEL
1158 select CPU_SUPPORTS_64BIT_KERNEL
1159 select CPU_SUPPORTS_HIGHMEM
1160 select CPU_SUPPORTS_HUGEPAGES
1162 Choose this option to build a kernel for release 1 or later of the
1163 MIPS64 architecture. Many modern embedded systems with a 64-bit
1164 MIPS processor are based on a MIPS64 processor. If you know the
1165 specific type of processor in your system, choose those that one
1166 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1167 Release 2 of the MIPS64 architecture is available since several
1168 years so chances are you even have a MIPS64 Release 2 processor
1169 in which case you should choose CPU_MIPS64_R2 instead for better
1172 config CPU_MIPS64_R2
1173 bool "MIPS64 Release 2"
1174 depends on SYS_HAS_CPU_MIPS64_R2
1175 select CPU_HAS_PREFETCH
1176 select CPU_SUPPORTS_32BIT_KERNEL
1177 select CPU_SUPPORTS_64BIT_KERNEL
1178 select CPU_SUPPORTS_HIGHMEM
1179 select CPU_SUPPORTS_HUGEPAGES
1181 Choose this option to build a kernel for release 2 or later of the
1182 MIPS64 architecture. Many modern embedded systems with a 64-bit
1183 MIPS processor are based on a MIPS64 processor. If you know the
1184 specific type of processor in your system, choose those that one
1185 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1189 depends on SYS_HAS_CPU_R3000
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_HIGHMEM
1194 Please make sure to pick the right CPU type. Linux/MIPS is not
1195 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1196 *not* work on R4000 machines and vice versa. However, since most
1197 of the supported machines have an R4000 (or similar) CPU, R4x00
1198 might be a safe bet. If the resulting kernel does not work,
1199 try to recompile with R3000.
1203 depends on SYS_HAS_CPU_TX39XX
1204 select CPU_SUPPORTS_32BIT_KERNEL
1208 depends on SYS_HAS_CPU_VR41XX
1209 select CPU_SUPPORTS_32BIT_KERNEL
1210 select CPU_SUPPORTS_64BIT_KERNEL
1212 The options selects support for the NEC VR4100 series of processors.
1213 Only choose this option if you have one of these processors as a
1214 kernel built with this option will not run on any other type of
1215 processor or vice versa.
1219 depends on SYS_HAS_CPU_R4300
1220 select CPU_SUPPORTS_32BIT_KERNEL
1221 select CPU_SUPPORTS_64BIT_KERNEL
1223 MIPS Technologies R4300-series processors.
1227 depends on SYS_HAS_CPU_R4X00
1228 select CPU_SUPPORTS_32BIT_KERNEL
1229 select CPU_SUPPORTS_64BIT_KERNEL
1231 MIPS Technologies R4000-series processors other than 4300, including
1232 the R4000, R4400, R4600, and 4700.
1236 depends on SYS_HAS_CPU_TX49XX
1237 select CPU_HAS_PREFETCH
1238 select CPU_SUPPORTS_32BIT_KERNEL
1239 select CPU_SUPPORTS_64BIT_KERNEL
1243 depends on SYS_HAS_CPU_R5000
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1247 MIPS Technologies R5000-series processors other than the Nevada.
1251 depends on SYS_HAS_CPU_R5432
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1257 depends on SYS_HAS_CPU_R5500
1258 select CPU_SUPPORTS_32BIT_KERNEL
1259 select CPU_SUPPORTS_64BIT_KERNEL
1260 select CPU_SUPPORTS_HUGEPAGES
1262 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1267 depends on EXPERIMENTAL
1268 depends on SYS_HAS_CPU_R6000
1269 select CPU_SUPPORTS_32BIT_KERNEL
1271 MIPS Technologies R6000 and R6000A series processors. Note these
1272 processors are extremely rare and the support for them is incomplete.
1276 depends on SYS_HAS_CPU_NEVADA
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1280 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1284 depends on EXPERIMENTAL
1285 depends on SYS_HAS_CPU_R8000
1286 select CPU_HAS_PREFETCH
1287 select CPU_SUPPORTS_64BIT_KERNEL
1289 MIPS Technologies R8000 processors. Note these processors are
1290 uncommon and the support for them is incomplete.
1294 depends on SYS_HAS_CPU_R10000
1295 select CPU_HAS_PREFETCH
1296 select CPU_SUPPORTS_32BIT_KERNEL
1297 select CPU_SUPPORTS_64BIT_KERNEL
1298 select CPU_SUPPORTS_HIGHMEM
1300 MIPS Technologies R10000-series processors.
1304 depends on SYS_HAS_CPU_RM7000
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1308 select CPU_SUPPORTS_HIGHMEM
1312 depends on SYS_HAS_CPU_RM9000
1313 select CPU_HAS_PREFETCH
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1316 select CPU_SUPPORTS_HIGHMEM
1317 select WEAK_ORDERING
1321 depends on SYS_HAS_CPU_SB1
1322 select CPU_SUPPORTS_32BIT_KERNEL
1323 select CPU_SUPPORTS_64BIT_KERNEL
1324 select CPU_SUPPORTS_HIGHMEM
1325 select WEAK_ORDERING
1327 config CPU_CAVIUM_OCTEON
1328 bool "Cavium Octeon processor"
1329 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1331 select IRQ_CPU_OCTEON
1332 select CPU_HAS_PREFETCH
1333 select CPU_SUPPORTS_64BIT_KERNEL
1334 select SYS_SUPPORTS_SMP
1335 select NR_CPUS_DEFAULT_16
1336 select WEAK_ORDERING
1337 select CPU_SUPPORTS_HIGHMEM
1338 select CPU_SUPPORTS_HUGEPAGES
1340 The Cavium Octeon processor is a highly integrated chip containing
1341 many ethernet hardware widgets for networking tasks. The processor
1342 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1343 Full details can be found at http://www.caviumnetworks.com.
1345 config CPU_BMIPS3300
1347 depends on SYS_HAS_CPU_BMIPS3300
1348 select DMA_NONCOHERENT
1350 select SWAP_IO_SPACE
1351 select SYS_SUPPORTS_32BIT_KERNEL
1352 select WEAK_ORDERING
1354 Broadcom BMIPS3300 processors.
1356 config CPU_BMIPS4350
1358 depends on SYS_HAS_CPU_BMIPS4350
1359 select CPU_SUPPORTS_32BIT_KERNEL
1360 select DMA_NONCOHERENT
1362 select SWAP_IO_SPACE
1363 select SYS_SUPPORTS_SMP
1364 select SYS_SUPPORTS_HOTPLUG_CPU
1365 select WEAK_ORDERING
1367 Broadcom BMIPS4350 ("VIPER") processors.
1369 config CPU_BMIPS4380
1371 depends on SYS_HAS_CPU_BMIPS4380
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select DMA_NONCOHERENT
1375 select SWAP_IO_SPACE
1376 select SYS_SUPPORTS_SMP
1377 select SYS_SUPPORTS_HOTPLUG_CPU
1378 select WEAK_ORDERING
1380 Broadcom BMIPS4380 processors.
1382 config CPU_BMIPS5000
1384 depends on SYS_HAS_CPU_BMIPS5000
1385 select CPU_SUPPORTS_32BIT_KERNEL
1386 select CPU_SUPPORTS_HIGHMEM
1387 select DMA_NONCOHERENT
1389 select SWAP_IO_SPACE
1390 select SYS_SUPPORTS_SMP
1391 select SYS_SUPPORTS_HOTPLUG_CPU
1392 select WEAK_ORDERING
1394 Broadcom BMIPS5000 processors.
1399 config CPU_NOP_WORKAROUNDS
1402 config CPU_JUMP_WORKAROUNDS
1405 config CPU_LOONGSON2F_WORKAROUNDS
1406 bool "Loongson 2F Workarounds"
1408 select CPU_NOP_WORKAROUNDS
1409 select CPU_JUMP_WORKAROUNDS
1411 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1412 require workarounds. Without workarounds the system may hang
1413 unexpectedly. For more information please refer to the gas
1414 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1416 Loongson 2F03 and later have fixed these issues and no workarounds
1417 are needed. The workarounds have no significant side effect on them
1418 but may decrease the performance of the system so this option should
1419 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1422 If unsure, please say Y.
1423 endif # CPU_LOONGSON2F
1425 config SYS_SUPPORTS_ZBOOT
1427 select HAVE_KERNEL_GZIP
1428 select HAVE_KERNEL_BZIP2
1429 select HAVE_KERNEL_LZMA
1430 select HAVE_KERNEL_LZO
1432 config SYS_SUPPORTS_ZBOOT_UART16550
1434 select SYS_SUPPORTS_ZBOOT
1436 config CPU_LOONGSON2
1438 select CPU_SUPPORTS_32BIT_KERNEL
1439 select CPU_SUPPORTS_64BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1442 config SYS_HAS_CPU_LOONGSON2E
1445 config SYS_HAS_CPU_LOONGSON2F
1447 select CPU_SUPPORTS_CPUFREQ
1448 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1449 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1451 config SYS_HAS_CPU_MIPS32_R1
1454 config SYS_HAS_CPU_MIPS32_R2
1457 config SYS_HAS_CPU_MIPS64_R1
1460 config SYS_HAS_CPU_MIPS64_R2
1463 config SYS_HAS_CPU_R3000
1466 config SYS_HAS_CPU_TX39XX
1469 config SYS_HAS_CPU_VR41XX
1472 config SYS_HAS_CPU_R4300
1475 config SYS_HAS_CPU_R4X00
1478 config SYS_HAS_CPU_TX49XX
1481 config SYS_HAS_CPU_R5000
1484 config SYS_HAS_CPU_R5432
1487 config SYS_HAS_CPU_R5500
1490 config SYS_HAS_CPU_R6000
1493 config SYS_HAS_CPU_NEVADA
1496 config SYS_HAS_CPU_R8000
1499 config SYS_HAS_CPU_R10000
1502 config SYS_HAS_CPU_RM7000
1505 config SYS_HAS_CPU_RM9000
1508 config SYS_HAS_CPU_SB1
1511 config SYS_HAS_CPU_CAVIUM_OCTEON
1514 config SYS_HAS_CPU_BMIPS3300
1517 config SYS_HAS_CPU_BMIPS4350
1520 config SYS_HAS_CPU_BMIPS4380
1523 config SYS_HAS_CPU_BMIPS5000
1527 # CPU may reorder R->R, R->W, W->R, W->W
1528 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1530 config WEAK_ORDERING
1534 # CPU may reorder reads and writes beyond LL/SC
1535 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1537 config WEAK_REORDERING_BEYOND_LLSC
1542 # These two indicate any level of the MIPS32 and MIPS64 architecture
1546 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1550 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1553 # These two indicate the revision of the architecture, either Release 1 or Release 2
1557 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1561 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1563 config SYS_SUPPORTS_32BIT_KERNEL
1565 config SYS_SUPPORTS_64BIT_KERNEL
1567 config CPU_SUPPORTS_32BIT_KERNEL
1569 config CPU_SUPPORTS_64BIT_KERNEL
1571 config CPU_SUPPORTS_CPUFREQ
1573 config CPU_SUPPORTS_ADDRWINCFG
1575 config CPU_SUPPORTS_HUGEPAGES
1577 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1579 config MIPS_PGD_C0_CONTEXT
1581 default y if 64BIT && CPU_MIPSR2
1584 # Set to y for ptrace access to watch registers.
1586 config HARDWARE_WATCHPOINTS
1588 default y if CPU_MIPSR1 || CPU_MIPSR2
1594 prompt "Kernel code model"
1596 You should only select this option if you have a workload that
1597 actually benefits from 64-bit processing or if your machine has
1598 large memory. You will only be presented a single option in this
1599 menu if your system does not support both 32-bit and 64-bit kernels.
1602 bool "32-bit kernel"
1603 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1606 Select this option if you want to build a 32-bit kernel.
1608 bool "64-bit kernel"
1609 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1610 select HAVE_SYSCALL_WRAPPERS
1612 Select this option if you want to build a 64-bit kernel.
1617 prompt "Kernel page size"
1618 default PAGE_SIZE_4KB
1620 config PAGE_SIZE_4KB
1622 depends on !CPU_LOONGSON2
1624 This option select the standard 4kB Linux page size. On some
1625 R3000-family processors this is the only available page size. Using
1626 4kB page size will minimize memory consumption and is therefore
1627 recommended for low memory systems.
1629 config PAGE_SIZE_8KB
1631 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1633 Using 8kB page size will result in higher performance kernel at
1634 the price of higher memory consumption. This option is available
1635 only on R8000 and cnMIPS processors. Note that you will need a
1636 suitable Linux distribution to support this.
1638 config PAGE_SIZE_16KB
1640 depends on !CPU_R3000 && !CPU_TX39XX
1642 Using 16kB page size will result in higher performance kernel at
1643 the price of higher memory consumption. This option is available on
1644 all non-R3000 family processors. Note that you will need a suitable
1645 Linux distribution to support this.
1647 config PAGE_SIZE_32KB
1649 depends on CPU_CAVIUM_OCTEON
1651 Using 32kB page size will result in higher performance kernel at
1652 the price of higher memory consumption. This option is available
1653 only on cnMIPS cores. Note that you will need a suitable Linux
1654 distribution to support this.
1656 config PAGE_SIZE_64KB
1658 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1660 Using 64kB page size will result in higher performance kernel at
1661 the price of higher memory consumption. This option is available on
1662 all non-R3000 family processor. Not that at the time of this
1663 writing this option is still high experimental.
1670 config IP22_CPU_SCACHE
1675 # Support for a MIPS32 / MIPS64 style S-caches
1677 config MIPS_CPU_SCACHE
1681 config R5000_CPU_SCACHE
1685 config RM7000_CPU_SCACHE
1689 config SIBYTE_DMA_PAGEOPS
1690 bool "Use DMA to clear/copy pages"
1693 Instead of using the CPU to zero and copy pages, use a Data Mover
1694 channel. These DMA channels are otherwise unused by the standard
1695 SiByte Linux port. Seems to give a small performance benefit.
1697 config CPU_HAS_PREFETCH
1701 prompt "MIPS MT options"
1703 config MIPS_MT_DISABLED
1704 bool "Disable multithreading support."
1706 Use this option if your workload can't take advantage of
1707 MIPS hardware multithreading support. On systems that don't have
1708 the option of an MT-enabled processor this option will be the only
1709 option in this menu.
1712 bool "Use 1 TC on each available VPE for SMP"
1713 depends on SYS_SUPPORTS_MULTITHREADING
1714 select CPU_MIPSR2_IRQ_VI
1715 select CPU_MIPSR2_IRQ_EI
1717 select NR_CPUS_DEFAULT_2
1719 select SYS_SUPPORTS_SCHED_SMT if SMP
1720 select SYS_SUPPORTS_SMP
1723 This is a kernel model which is known a VSMP but lately has been
1724 marketesed into SMVP.
1725 Virtual SMP uses the processor's VPEs to implement virtual
1726 processors. In currently available configuration of the 34K processor
1727 this allows for a dual processor. Both processors will share the same
1728 primary caches; each will obtain the half of the TLB for it's own
1729 exclusive use. For a layman this model can be described as similar to
1730 what Intel calls Hyperthreading.
1732 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1735 bool "SMTC: Use all TCs on all VPEs for SMP"
1736 depends on CPU_MIPS32_R2
1737 #depends on CPU_MIPS64_R2 # once there is hardware ...
1738 depends on SYS_SUPPORTS_MULTITHREADING
1739 select CPU_MIPSR2_IRQ_VI
1740 select CPU_MIPSR2_IRQ_EI
1742 select NR_CPUS_DEFAULT_8
1744 select SYS_SUPPORTS_SMP
1747 This is a kernel model which is known a SMTC or lately has been
1748 marketesed into SMVP.
1749 is presenting the available TC's of the core as processors to Linux.
1750 On currently available 34K processors this means a Linux system will
1751 see up to 5 processors. The implementation of the SMTC kernel differs
1752 significantly from VSMP and cannot efficiently coexist in the same
1753 kernel binary so the choice between VSMP and SMTC is a compile time
1756 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1764 bool "SMT (multithreading) scheduler support"
1765 depends on SYS_SUPPORTS_SCHED_SMT
1768 SMT scheduler support improves the CPU scheduler's decision making
1769 when dealing with MIPS MT enabled cores at a cost of slightly
1770 increased overhead in some places. If unsure say N here.
1772 config SYS_SUPPORTS_SCHED_SMT
1776 config SYS_SUPPORTS_MULTITHREADING
1779 config MIPS_MT_FPAFF
1780 bool "Dynamic FPU affinity for FP-intensive threads"
1782 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1784 config MIPS_VPE_LOADER
1785 bool "VPE loader support."
1786 depends on SYS_SUPPORTS_MULTITHREADING
1787 select CPU_MIPSR2_IRQ_VI
1788 select CPU_MIPSR2_IRQ_EI
1791 Includes a loader for loading an elf relocatable object
1792 onto another VPE and running it.
1794 config MIPS_MT_SMTC_IM_BACKSTOP
1795 bool "Use per-TC register bits as backstop for inhibited IM bits"
1796 depends on MIPS_MT_SMTC
1799 To support multiple TC microthreads acting as "CPUs" within
1800 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1801 during interrupt handling. To support legacy drivers and interrupt
1802 controller management code, SMTC has a "backstop" to track and
1803 if necessary restore the interrupt mask. This has some performance
1804 impact on interrupt service overhead.
1806 config MIPS_MT_SMTC_IRQAFF
1807 bool "Support IRQ affinity API"
1808 depends on MIPS_MT_SMTC
1811 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1812 for SMTC Linux kernel. Requires platform support, of which
1813 an example can be found in the MIPS kernel i8259 and Malta
1814 platform code. Adds some overhead to interrupt dispatch, and
1815 should be used only if you know what you are doing.
1817 config MIPS_VPE_LOADER_TOM
1818 bool "Load VPE program into memory hidden from linux"
1819 depends on MIPS_VPE_LOADER
1822 The loader can use memory that is present but has been hidden from
1823 Linux using the kernel command line option "mem=xxMB". It's up to
1824 you to ensure the amount you put in the option and the space your
1825 program requires is less or equal to the amount physically present.
1827 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1828 config MIPS_VPE_APSP_API
1829 bool "Enable support for AP/SP API (RTLX)"
1830 depends on MIPS_VPE_LOADER
1833 config MIPS_APSP_KSPD
1835 depends on MIPS_VPE_APSP_API
1838 KSPD is a kernel daemon that accepts syscall requests from the SP
1839 side, actions them and returns the results. It also handles the
1840 "exit" syscall notifying other kernel modules the SP program is
1841 exiting. You probably want to say yes here.
1844 bool "MIPS CMP framework support"
1845 depends on SYS_SUPPORTS_MIPS_CMP
1847 select SYS_SUPPORTS_SMP
1848 select SYS_SUPPORTS_SCHED_SMT if SMP
1849 select WEAK_ORDERING
1852 This is a placeholder option for the GCMP work. It will need to
1853 be handled differently...
1855 config SB1_PASS_1_WORKAROUNDS
1857 depends on CPU_SB1_PASS_1
1860 config SB1_PASS_2_WORKAROUNDS
1862 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1865 config SB1_PASS_2_1_WORKAROUNDS
1867 depends on CPU_SB1 && CPU_SB1_PASS_2
1870 config 64BIT_PHYS_ADDR
1873 config ARCH_PHYS_ADDR_T_64BIT
1874 def_bool 64BIT_PHYS_ADDR
1876 config CPU_HAS_SMARTMIPS
1877 depends on SYS_SUPPORTS_SMARTMIPS
1878 bool "Support for the SmartMIPS ASE"
1880 SmartMIPS is a extension of the MIPS32 architecture aimed at
1881 increased security at both hardware and software level for
1882 smartcards. Enabling this option will allow proper use of the
1883 SmartMIPS instructions by Linux applications. However a kernel with
1884 this option will not work on a MIPS core without SmartMIPS core. If
1885 you don't know you probably don't have SmartMIPS and should say N
1892 # Vectored interrupt mode is an R2 feature
1894 config CPU_MIPSR2_IRQ_VI
1898 # Extended interrupt mode is an R2 feature
1900 config CPU_MIPSR2_IRQ_EI
1905 depends on !CPU_R3000
1908 config GENERIC_CLOCKEVENTS_BROADCAST
1914 config CPU_DADDI_WORKAROUNDS
1917 config CPU_R4000_WORKAROUNDS
1919 select CPU_R4400_WORKAROUNDS
1921 config CPU_R4400_WORKAROUNDS
1925 # Use the generic interrupt handling code in kernel/irq/:
1927 config GENERIC_HARDIRQS
1931 config GENERIC_IRQ_PROBE
1939 # - Highmem only makes sense for the 32-bit kernel.
1940 # - The current highmem code will only work properly on physically indexed
1941 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1942 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1943 # moment we protect the user and offer the highmem option only on machines
1944 # where it's known to be safe. This will not offer highmem on a few systems
1945 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1946 # indexed CPUs but we're playing safe.
1947 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1948 # know they might have memory configurations that could make use of highmem
1952 bool "High Memory Support"
1953 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1955 config CPU_SUPPORTS_HIGHMEM
1958 config SYS_SUPPORTS_HIGHMEM
1961 config SYS_SUPPORTS_SMARTMIPS
1964 config ARCH_FLATMEM_ENABLE
1966 depends on !NUMA && !CPU_LOONGSON2
1968 config ARCH_DISCONTIGMEM_ENABLE
1970 default y if SGI_IP27
1972 Say Y to support efficient handling of discontiguous physical memory,
1973 for architectures which are either NUMA (Non-Uniform Memory Access)
1974 or have huge holes in the physical address space for other reasons.
1975 See <file:Documentation/vm/numa> for more.
1977 config ARCH_POPULATES_NODE_MAP
1980 config ARCH_SPARSEMEM_ENABLE
1982 select SPARSEMEM_STATIC
1986 depends on SYS_SUPPORTS_NUMA
1988 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1989 Access). This option improves performance on systems with more
1990 than two nodes; on two node systems it is generally better to
1991 leave it disabled; on single node systems disable this option
1994 config SYS_SUPPORTS_NUMA
2000 depends on NEED_MULTIPLE_NODES
2002 config HW_PERF_EVENTS
2003 bool "Enable hardware performance counter support for perf events"
2004 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2007 Enable hardware performance counter support for perf events. If
2008 disabled, perf events will use software events only.
2013 bool "Multi-Processing support"
2014 depends on SYS_SUPPORTS_SMP
2016 select USE_GENERIC_SMP_HELPERS
2018 This enables support for systems with more than one CPU. If you have
2019 a system with only one CPU, like most personal computers, say N. If
2020 you have a system with more than one CPU, say Y.
2022 If you say N here, the kernel will run on single and multiprocessor
2023 machines, but will use only one CPU of a multiprocessor machine. If
2024 you say Y here, the kernel will run on many, but not all,
2025 singleprocessor machines. On a singleprocessor machine, the kernel
2026 will run faster if you say N here.
2028 People using multiprocessor machines who say Y here should also say
2029 Y to "Enhanced Real Time Clock Support", below.
2031 See also the SMP-HOWTO available at
2032 <http://www.tldp.org/docs.html#howto>.
2034 If you don't know what to do here, say N.
2039 config SYS_SUPPORTS_MIPS_CMP
2042 config SYS_SUPPORTS_SMP
2045 config NR_CPUS_DEFAULT_1
2048 config NR_CPUS_DEFAULT_2
2051 config NR_CPUS_DEFAULT_4
2054 config NR_CPUS_DEFAULT_8
2057 config NR_CPUS_DEFAULT_16
2060 config NR_CPUS_DEFAULT_32
2063 config NR_CPUS_DEFAULT_64
2067 int "Maximum number of CPUs (2-64)"
2068 range 1 64 if NR_CPUS_DEFAULT_1
2070 default "1" if NR_CPUS_DEFAULT_1
2071 default "2" if NR_CPUS_DEFAULT_2
2072 default "4" if NR_CPUS_DEFAULT_4
2073 default "8" if NR_CPUS_DEFAULT_8
2074 default "16" if NR_CPUS_DEFAULT_16
2075 default "32" if NR_CPUS_DEFAULT_32
2076 default "64" if NR_CPUS_DEFAULT_64
2078 This allows you to specify the maximum number of CPUs which this
2079 kernel will support. The maximum supported value is 32 for 32-bit
2080 kernel and 64 for 64-bit kernels; the minimum value which makes
2081 sense is 1 for Qemu (useful only for kernel debugging purposes)
2082 and 2 for all others.
2084 This is purely to save memory - each supported CPU adds
2085 approximately eight kilobytes to the kernel image. For best
2086 performance should round up your number of processors to the next
2089 source "kernel/time/Kconfig"
2092 # Timer Interrupt Frequency Configuration
2096 prompt "Timer frequency"
2099 Allows the configuration of the timer frequency.
2102 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2105 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2108 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2111 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2114 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2117 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2120 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2124 config SYS_SUPPORTS_48HZ
2127 config SYS_SUPPORTS_100HZ
2130 config SYS_SUPPORTS_128HZ
2133 config SYS_SUPPORTS_250HZ
2136 config SYS_SUPPORTS_256HZ
2139 config SYS_SUPPORTS_1000HZ
2142 config SYS_SUPPORTS_1024HZ
2145 config SYS_SUPPORTS_ARBIT_HZ
2147 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2148 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2149 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2150 !SYS_SUPPORTS_1024HZ
2155 default 100 if HZ_100
2156 default 128 if HZ_128
2157 default 250 if HZ_250
2158 default 256 if HZ_256
2159 default 1000 if HZ_1000
2160 default 1024 if HZ_1024
2162 source "kernel/Kconfig.preempt"
2164 config MIPS_INSANE_LARGE
2165 bool "Support for large 64-bit configurations"
2166 depends on CPU_R10000 && 64BIT
2168 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2169 previous 64-bit processors which only supported 40 bit / 1TB. If you
2170 need processes of more than 1TB virtual address space, say Y here.
2171 This will result in additional memory usage, so it is not
2172 recommended for normal users.
2175 bool "Kexec system call (EXPERIMENTAL)"
2176 depends on EXPERIMENTAL
2178 kexec is a system call that implements the ability to shutdown your
2179 current kernel, and to start another kernel. It is like a reboot
2180 but it is independent of the system firmware. And like a reboot
2181 you can start any kernel with it, not just Linux.
2183 The name comes from the similarity to the exec system call.
2185 It is an ongoing process to be certain the hardware in a machine
2186 is properly shutdown, so do not be surprised if this code does not
2187 initially work for you. It may help to enable device hotplugging
2188 support. As of this writing the exact hardware interface is
2189 strongly in flux, so no good recommendation can be made.
2192 bool "Enable seccomp to safely compute untrusted bytecode"
2196 This kernel feature is useful for number crunching applications
2197 that may need to compute untrusted bytecode during their
2198 execution. By using pipes or other transports made available to
2199 the process as file descriptors supporting the read/write
2200 syscalls, it's possible to isolate those applications in
2201 their own address space using seccomp. Once seccomp is
2202 enabled via /proc/<pid>/seccomp, it cannot be disabled
2203 and the task is only allowed to execute a few safe syscalls
2204 defined by each seccomp mode.
2206 If unsure, say Y. Only embedded should say N here.
2209 bool "Flattened Device Tree support"
2213 Include support for flattened device tree machine descriptions.
2217 config LOCKDEP_SUPPORT
2221 config STACKTRACE_SUPPORT
2225 source "init/Kconfig"
2227 source "kernel/Kconfig.freezer"
2229 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2237 bool "Support for PCI controller"
2238 depends on HW_HAS_PCI
2241 Find out whether you have a PCI motherboard. PCI is the name of a
2242 bus system, i.e. the way the CPU talks to the other stuff inside
2243 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2249 source "drivers/pci/Kconfig"
2252 # ISA support is now enabled via select. Too many systems still have the one
2253 # or other ISA chip on the board that users don't know about so don't expect
2254 # users to choose the right thing ...
2261 depends on HW_HAS_EISA
2263 select GENERIC_ISA_DMA
2265 The Extended Industry Standard Architecture (EISA) bus was
2266 developed as an open alternative to the IBM MicroChannel bus.
2268 The EISA bus provided some of the features of the IBM MicroChannel
2269 bus while maintaining backward compatibility with cards made for
2270 the older ISA bus. The EISA bus saw limited use between 1988 and
2271 1995 when it was made obsolete by the PCI bus.
2273 Say Y here if you are building a kernel for an EISA-based machine.
2277 source "drivers/eisa/Kconfig"
2280 bool "TURBOchannel support"
2281 depends on MACH_DECSTATION
2283 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2284 processors. TURBOchannel programming specifications are available
2286 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2288 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2289 Linux driver support status is documented at:
2290 <http://www.linux-mips.org/wiki/DECstation>
2293 # bool "Access.Bus support"
2302 select MIPS_EXTERNAL_TIMER
2307 source "drivers/pcmcia/Kconfig"
2309 source "drivers/pci/hotplug/Kconfig"
2313 menu "Executable file formats"
2315 source "fs/Kconfig.binfmt"
2320 config MIPS32_COMPAT
2321 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2324 Select this option if you want Linux/MIPS 32-bit binary
2325 compatibility. Since all software available for Linux/MIPS is
2326 currently 32-bit you should say Y here.
2330 depends on MIPS32_COMPAT
2333 config SYSVIPC_COMPAT
2335 depends on COMPAT && SYSVIPC
2339 bool "Kernel support for o32 binaries"
2340 depends on MIPS32_COMPAT
2342 Select this option if you want to run o32 binaries. These are pure
2343 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2344 existing binaries are in this format.
2349 bool "Kernel support for n32 binaries"
2350 depends on MIPS32_COMPAT
2352 Select this option if you want to run n32 binaries. These are
2353 64-bit binaries using 32-bit quantities for addressing and certain
2354 data that would normally be 64-bit. They are used in special
2361 default y if MIPS32_O32 || MIPS32_N32
2365 menu "Power management options"
2367 config ARCH_HIBERNATION_POSSIBLE
2369 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2371 config ARCH_SUSPEND_POSSIBLE
2373 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2375 source "kernel/power/Kconfig"
2379 source "arch/mips/kernel/cpufreq/Kconfig"
2381 source "net/Kconfig"
2383 source "drivers/Kconfig"
2387 source "arch/mips/Kconfig.debug"
2389 source "security/Kconfig"
2391 source "crypto/Kconfig"
2393 source "lib/Kconfig"