4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
20 select RTC_LIB if !MACH_LOONGSON
21 select GENERIC_ATOMIC64 if !64BIT
23 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_HARDIRQS
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select HAVE_ARCH_JUMP_LABEL
28 select IRQ_FORCED_THREADING
30 select HAVE_MEMBLOCK_NODE_MAP
31 select ARCH_DISCARD_MEMBLOCK
33 menu "Machine selection"
43 bool "Alchemy processor based machines"
44 select 64BIT_PHYS_ADDR
48 select SYS_HAS_CPU_MIPS32_R1
49 select SYS_SUPPORTS_32BIT_KERNEL
50 select SYS_SUPPORTS_APM_EMULATION
52 select ARCH_WANT_OPTIONAL_GPIOLIB
53 select SYS_SUPPORTS_ZBOOT
54 select USB_ARCH_HAS_OHCI
55 select USB_ARCH_HAS_EHCI
58 bool "Texas Instruments AR7"
60 select DMA_NONCOHERENT
66 select SYS_HAS_CPU_MIPS32_R1
67 select SYS_HAS_EARLY_PRINTK
68 select SYS_SUPPORTS_32BIT_KERNEL
69 select SYS_SUPPORTS_LITTLE_ENDIAN
70 select SYS_SUPPORTS_ZBOOT_UART16550
71 select ARCH_REQUIRE_GPIOLIB
74 Support for the Texas Instruments AR7 System-on-a-Chip
75 family: TNETD7100, 7200 and 7300.
78 bool "Atheros AR71XX/AR724X/AR913X based boards"
79 select ARCH_REQUIRE_GPIOLIB
83 select DMA_NONCOHERENT
86 select SYS_HAS_CPU_MIPS32_R2
87 select SYS_HAS_EARLY_PRINTK
88 select SYS_SUPPORTS_32BIT_KERNEL
89 select SYS_SUPPORTS_BIG_ENDIAN
91 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
94 bool "Broadcom BCM47XX based boards"
97 select DMA_NONCOHERENT
100 select SYS_SUPPORTS_32BIT_KERNEL
101 select SYS_SUPPORTS_LITTLE_ENDIAN
103 select SYS_HAS_EARLY_PRINTK
106 Support for BCM47XX based boards
109 bool "Broadcom BCM63XX based boards"
112 select DMA_NONCOHERENT
114 select SYS_HAS_CPU_MIPS32_R1
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_HAS_EARLY_PRINTK
119 select ARCH_REQUIRE_GPIOLIB
121 Support for BCM63XX based boards
128 select DMA_NONCOHERENT
134 select PCI_GT64XXX_PCI0
136 select SYS_HAS_CPU_NEVADA
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_64BIT_KERNEL
140 select SYS_SUPPORTS_LITTLE_ENDIAN
142 config MACH_DECSTATION
149 select CPU_DADDI_WORKAROUNDS if 64BIT
150 select CPU_R4000_WORKAROUNDS if 64BIT
151 select CPU_R4400_WORKAROUNDS if 64BIT
152 select DMA_NONCOHERENT
155 select SYS_HAS_CPU_R3000
156 select SYS_HAS_CPU_R4X00
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_128HZ
161 select SYS_SUPPORTS_256HZ
162 select SYS_SUPPORTS_1024HZ
164 This enables support for DEC's MIPS based workstations. For details
165 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
166 DECstation porting pages on <http://decstation.unix-ag.org/>.
168 If you have one of the following DECstation Models you definitely
169 want to choose R4xx0 for the CPU Type:
176 otherwise choose R3000.
179 bool "Jazz family of machines"
182 select ARCH_MAY_HAVE_PC_FDC
185 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
186 select GENERIC_ISA_DMA
187 select HAVE_PCSPKR_PLATFORM
192 select SYS_HAS_CPU_R4X00
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
195 select SYS_SUPPORTS_100HZ
197 This a family of machines based on the MIPS R4030 chipset which was
198 used by several vendors to build RISC/os and Windows NT workstations.
199 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
200 Olivetti M700-10 workstations.
203 bool "Ingenic JZ4740 based machines"
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select DMA_NONCOHERENT
210 select ARCH_REQUIRE_GPIOLIB
211 select SYS_HAS_EARLY_PRINTK
214 select GENERIC_IRQ_CHIP
217 bool "Lantiq based platforms"
218 select DMA_NONCOHERENT
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_MULTITHREADING
227 select SYS_HAS_EARLY_PRINTK
228 select ARCH_REQUIRE_GPIOLIB
235 bool "LASAT Networks platforms"
238 select DMA_NONCOHERENT
239 select SYS_HAS_EARLY_PRINTK
242 select PCI_GT64XXX_PCI0
244 select R5000_CPU_SCACHE
245 select SYS_HAS_CPU_R5000
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
248 select SYS_SUPPORTS_LITTLE_ENDIAN
251 bool "Loongson family of machines"
252 select SYS_SUPPORTS_ZBOOT
254 This enables the support of Loongson family of machines.
256 Loongson is a family of general-purpose MIPS-compatible CPUs.
257 developed at Institute of Computing Technology (ICT),
258 Chinese Academy of Sciences (CAS) in the People's Republic
259 of China. The chief architect is Professor Weiwu Hu.
262 bool "MIPS Malta board"
263 select ARCH_MAY_HAVE_PC_FDC
268 select DMA_NONCOHERENT
269 select GENERIC_ISA_DMA
270 select HAVE_PCSPKR_PLATFORM
276 select MIPS_BOARDS_GEN
278 select MIPS_CPU_SCACHE
279 select PCI_GT64XXX_PCI0
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_HAS_CPU_MIPS32_R2
284 select SYS_HAS_CPU_MIPS64_R1
285 select SYS_HAS_CPU_NEVADA
286 select SYS_HAS_CPU_RM7000
287 select SYS_HAS_EARLY_PRINTK
288 select SYS_SUPPORTS_32BIT_KERNEL
289 select SYS_SUPPORTS_64BIT_KERNEL
290 select SYS_SUPPORTS_BIG_ENDIAN
291 select SYS_SUPPORTS_LITTLE_ENDIAN
292 select SYS_SUPPORTS_MIPS_CMP
293 select SYS_SUPPORTS_MULTITHREADING
294 select SYS_SUPPORTS_SMARTMIPS
295 select SYS_SUPPORTS_ZBOOT
297 This enables support for the MIPS Technologies Malta evaluation
301 bool 'MIPS simulator (MIPSsim)'
304 select DMA_NONCOHERENT
305 select SYS_HAS_EARLY_PRINTK
308 select SYS_HAS_CPU_MIPS32_R1
309 select SYS_HAS_CPU_MIPS32_R2
310 select SYS_HAS_EARLY_PRINTK
311 select SYS_SUPPORTS_32BIT_KERNEL
312 select SYS_SUPPORTS_BIG_ENDIAN
313 select SYS_SUPPORTS_MULTITHREADING
314 select SYS_SUPPORTS_LITTLE_ENDIAN
316 This option enables support for MIPS Technologies MIPSsim software
320 bool "NEC EMMA2RH Mark-eins board"
324 This enables support for the NEC Electronics Mark-eins boards.
327 bool "NEC VR4100 series based machines"
330 select SYS_HAS_CPU_VR41XX
331 select ARCH_REQUIRE_GPIOLIB
334 bool "NXP STB220 board"
337 Support for NXP Semiconductors STB220 Development Board.
344 Support for NXP Semiconductors STB225 Development Board.
347 bool "NXP PNX8550 based JBS board"
349 select SYS_SUPPORTS_LITTLE_ENDIAN
351 config PNX8550_STB810
352 bool "NXP PNX8550 based STB810 board"
354 select SYS_SUPPORTS_LITTLE_ENDIAN
357 bool "PMC-Sierra MSP chipsets"
358 depends on EXPERIMENTAL
361 select DMA_NONCOHERENT
363 select NO_EXCEPT_FILL
365 select SYS_HAS_CPU_MIPS32_R1
366 select SYS_HAS_CPU_MIPS32_R2
367 select SYS_SUPPORTS_32BIT_KERNEL
368 select SYS_SUPPORTS_BIG_ENDIAN
371 select SERIAL_8250_CONSOLE
373 This adds support for the PMC-Sierra family of Multi-Service
374 Processor System-On-A-Chips. These parts include a number
375 of integrated peripherals, interfaces and DSPs in addition to
376 a variety of MIPS cores.
379 bool "PMC-Sierra Yosemite eval board"
388 select SYS_HAS_CPU_RM9000
389 select SYS_HAS_EARLY_PRINTK
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_64BIT_KERNEL
392 select SYS_SUPPORTS_BIG_ENDIAN
393 select SYS_SUPPORTS_HIGHMEM
394 select SYS_SUPPORTS_SMP
396 Yosemite is an evaluation board for the RM9000x2 processor
397 manufactured by PMC-Sierra.
403 select CPU_MIPSR2_IRQ_VI
404 select CPU_MIPSR2_IRQ_EI
406 select DMA_NONCOHERENT
408 select SYS_HAS_EARLY_PRINTK
409 select SYS_HAS_CPU_MIPS32_R2
410 select SYS_SUPPORTS_32BIT_KERNEL
411 select SYS_SUPPORTS_BIG_ENDIAN
412 select SYS_SUPPORTS_HIGHMEM
413 select USB_OHCI_LITTLE_ENDIAN
415 This enables support for the Cisco PowerTV Platform.
418 bool "SGI IP22 (Indy/Indigo2)"
424 select DEFAULT_SGI_PARTITION
425 select DMA_NONCOHERENT
429 select IP22_CPU_SCACHE
431 select GENERIC_ISA_DMA_SUPPORT_BROKEN
433 select SGI_HAS_INDYDOG
439 select SYS_HAS_CPU_R4X00
440 select SYS_HAS_CPU_R5000
442 # Disable EARLY_PRINTK for now since it leads to overwritten prom
443 # memory during early boot on some machines.
445 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
446 # for a more details discussion
448 # select SYS_HAS_EARLY_PRINTK
449 select SYS_SUPPORTS_32BIT_KERNEL
450 select SYS_SUPPORTS_64BIT_KERNEL
451 select SYS_SUPPORTS_BIG_ENDIAN
453 This are the SGI Indy, Challenge S and Indigo2, as well as certain
454 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
455 that runs on these, say Y here.
458 bool "SGI IP27 (Origin200/2000)"
462 select DEFAULT_SGI_PARTITION
464 select SYS_HAS_EARLY_PRINTK
466 select NR_CPUS_DEFAULT_64
467 select SYS_HAS_CPU_R10000
468 select SYS_SUPPORTS_64BIT_KERNEL
469 select SYS_SUPPORTS_BIG_ENDIAN
470 select SYS_SUPPORTS_NUMA
471 select SYS_SUPPORTS_SMP
473 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
474 workstations. To compile a Linux kernel that runs on these, say Y
478 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
479 depends on EXPERIMENTAL
485 select DEFAULT_SGI_PARTITION
486 select DMA_NONCOHERENT
487 select GENERIC_ISA_DMA_SUPPORT_BROKEN
493 select SGI_HAS_INDYDOG
499 select SYS_HAS_CPU_R10000
501 # Disable EARLY_PRINTK for now since it leads to overwritten prom
502 # memory during early boot on some machines.
504 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
505 # for a more details discussion
507 # select SYS_HAS_EARLY_PRINTK
508 select SYS_SUPPORTS_64BIT_KERNEL
509 select SYS_SUPPORTS_BIG_ENDIAN
511 This is the SGI Indigo2 with R10000 processor. To compile a Linux
512 kernel that runs on these, say Y here.
521 select DMA_NONCOHERENT
524 select R5000_CPU_SCACHE
525 select RM7000_CPU_SCACHE
526 select SYS_HAS_CPU_R5000
527 select SYS_HAS_CPU_R10000 if BROKEN
528 select SYS_HAS_CPU_RM7000
529 select SYS_HAS_CPU_NEVADA
530 select SYS_SUPPORTS_64BIT_KERNEL
531 select SYS_SUPPORTS_BIG_ENDIAN
533 If you want this kernel to run on SGI O2 workstation, say Y here.
536 bool "Sibyte BCM91120C-CRhine"
537 depends on EXPERIMENTAL
540 select SIBYTE_BCM1120
542 select SYS_HAS_CPU_SB1
543 select SYS_SUPPORTS_BIG_ENDIAN
544 select SYS_SUPPORTS_LITTLE_ENDIAN
547 bool "Sibyte BCM91120x-Carmel"
548 depends on EXPERIMENTAL
551 select SIBYTE_BCM1120
553 select SYS_HAS_CPU_SB1
554 select SYS_SUPPORTS_BIG_ENDIAN
555 select SYS_SUPPORTS_LITTLE_ENDIAN
558 bool "Sibyte BCM91125C-CRhone"
559 depends on EXPERIMENTAL
562 select SIBYTE_BCM1125
564 select SYS_HAS_CPU_SB1
565 select SYS_SUPPORTS_BIG_ENDIAN
566 select SYS_SUPPORTS_HIGHMEM
567 select SYS_SUPPORTS_LITTLE_ENDIAN
570 bool "Sibyte BCM91125E-Rhone"
571 depends on EXPERIMENTAL
574 select SIBYTE_BCM1125H
576 select SYS_HAS_CPU_SB1
577 select SYS_SUPPORTS_BIG_ENDIAN
578 select SYS_SUPPORTS_LITTLE_ENDIAN
581 bool "Sibyte BCM91250A-SWARM"
584 select HAVE_PATA_PLATFORM
585 select NR_CPUS_DEFAULT_2
588 select SYS_HAS_CPU_SB1
589 select SYS_SUPPORTS_BIG_ENDIAN
590 select SYS_SUPPORTS_HIGHMEM
591 select SYS_SUPPORTS_LITTLE_ENDIAN
592 select ZONE_DMA32 if 64BIT
594 config SIBYTE_LITTLESUR
595 bool "Sibyte BCM91250C2-LittleSur"
596 depends on EXPERIMENTAL
599 select HAVE_PATA_PLATFORM
600 select NR_CPUS_DEFAULT_2
603 select SYS_HAS_CPU_SB1
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_HIGHMEM
606 select SYS_SUPPORTS_LITTLE_ENDIAN
608 config SIBYTE_SENTOSA
609 bool "Sibyte BCM91250E-Sentosa"
610 depends on EXPERIMENTAL
613 select NR_CPUS_DEFAULT_2
616 select SYS_HAS_CPU_SB1
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_LITTLE_ENDIAN
621 bool "Sibyte BCM91480B-BigSur"
624 select NR_CPUS_DEFAULT_4
625 select SIBYTE_BCM1x80
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_HIGHMEM
630 select SYS_SUPPORTS_LITTLE_ENDIAN
631 select ZONE_DMA32 if 64BIT
634 bool "SNI RM200/300/400"
635 select ARC if CPU_LITTLE_ENDIAN
636 select ARC32 if CPU_LITTLE_ENDIAN
637 select SNIPROM if CPU_BIG_ENDIAN
638 select ARCH_MAY_HAVE_PC_FDC
642 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
643 select DMA_NONCOHERENT
644 select GENERIC_ISA_DMA
645 select HAVE_PCSPKR_PLATFORM
652 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
653 select SYS_HAS_CPU_R4X00
654 select SYS_HAS_CPU_R5000
655 select SYS_HAS_CPU_R10000
656 select R5000_CPU_SCACHE
657 select SYS_HAS_EARLY_PRINTK
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select SYS_SUPPORTS_HIGHMEM
662 select SYS_SUPPORTS_LITTLE_ENDIAN
664 The SNI RM200/300/400 are MIPS-based machines manufactured by
665 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
666 Technology and now in turn merged with Fujitsu. Say Y here to
667 support this machine type.
670 bool "Toshiba TX39 series based machines"
673 bool "Toshiba TX49 series based machines"
675 config MIKROTIK_RB532
676 bool "Mikrotik RB532 boards"
679 select DMA_NONCOHERENT
682 select SYS_HAS_CPU_MIPS32_R1
683 select SYS_SUPPORTS_32BIT_KERNEL
684 select SYS_SUPPORTS_LITTLE_ENDIAN
687 select ARCH_REQUIRE_GPIOLIB
689 Support the Mikrotik(tm) RouterBoard 532 series,
690 based on the IDT RC32434 SoC.
693 bool "Wind River PPMC board"
698 select DMA_NONCOHERENT
700 select PCI_GT64XXX_PCI0
702 select SYS_HAS_CPU_MIPS32_R1
703 select SYS_HAS_CPU_MIPS32_R2
704 select SYS_HAS_CPU_MIPS64_R1
705 select SYS_HAS_CPU_NEVADA
706 select SYS_HAS_CPU_RM7000
707 select SYS_SUPPORTS_32BIT_KERNEL
708 select SYS_SUPPORTS_64BIT_KERNEL
709 select SYS_SUPPORTS_BIG_ENDIAN
710 select SYS_SUPPORTS_LITTLE_ENDIAN
712 This enables support for the Wind River MIPS32 4KC PPMC evaluation
713 board, which is based on GT64120 bridge chip.
715 config CAVIUM_OCTEON_SIMULATOR
716 bool "Cavium Networks Octeon Simulator"
718 select 64BIT_PHYS_ADDR
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select SYS_SUPPORTS_HOTPLUG_CPU
723 select SYS_HAS_CPU_CAVIUM_OCTEON
726 The Octeon simulator is software performance model of the Cavium
727 Octeon Processor. It supports simulating Octeon processors on x86
730 config CAVIUM_OCTEON_REFERENCE_BOARD
731 bool "Cavium Networks Octeon reference board"
733 select 64BIT_PHYS_ADDR
735 select SYS_SUPPORTS_64BIT_KERNEL
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_HOTPLUG_CPU
738 select SYS_HAS_EARLY_PRINTK
739 select SYS_HAS_CPU_CAVIUM_OCTEON
742 select ARCH_SUPPORTS_MSI
744 select USB_ARCH_HAS_OHCI
745 select USB_ARCH_HAS_EHCI
748 This option supports all of the Octeon reference boards from Cavium
749 Networks. It builds a kernel that dynamically determines the Octeon
750 CPU type and supports all known board reference implementations.
751 Some of the supported boards are:
758 Say Y here for most Octeon reference boards.
761 bool "Netlogic XLR/XLS based systems"
762 depends on EXPERIMENTAL
765 select SYS_HAS_CPU_XLR
766 select SYS_SUPPORTS_SMP
769 select SYS_SUPPORTS_32BIT_KERNEL
770 select SYS_SUPPORTS_64BIT_KERNEL
771 select 64BIT_PHYS_ADDR
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select SYS_SUPPORTS_HIGHMEM
775 select NR_CPUS_DEFAULT_32
779 select ARCH_SUPPORTS_MSI
780 select ZONE_DMA if 64BIT
782 select SYS_HAS_EARLY_PRINTK
784 Support for systems based on Netlogic XLR and XLS processors.
785 Say Y here if you have a XLR or XLS based board.
788 bool "Netlogic XLP based systems"
789 depends on EXPERIMENTAL
792 select SYS_HAS_CPU_XLP
793 select SYS_SUPPORTS_SMP
796 select SYS_SUPPORTS_32BIT_KERNEL
797 select SYS_SUPPORTS_64BIT_KERNEL
798 select 64BIT_PHYS_ADDR
799 select SYS_SUPPORTS_BIG_ENDIAN
800 select SYS_SUPPORTS_LITTLE_ENDIAN
801 select SYS_SUPPORTS_HIGHMEM
803 select NR_CPUS_DEFAULT_32
807 select ZONE_DMA if 64BIT
809 select SYS_HAS_EARLY_PRINTK
811 This board is based on Netlogic XLP Processor.
812 Say Y here if you have a XLP based board.
816 source "arch/mips/alchemy/Kconfig"
817 source "arch/mips/ath79/Kconfig"
818 source "arch/mips/bcm47xx/Kconfig"
819 source "arch/mips/bcm63xx/Kconfig"
820 source "arch/mips/jazz/Kconfig"
821 source "arch/mips/jz4740/Kconfig"
822 source "arch/mips/lantiq/Kconfig"
823 source "arch/mips/lasat/Kconfig"
824 source "arch/mips/pmc-sierra/Kconfig"
825 source "arch/mips/powertv/Kconfig"
826 source "arch/mips/sgi-ip27/Kconfig"
827 source "arch/mips/sibyte/Kconfig"
828 source "arch/mips/txx9/Kconfig"
829 source "arch/mips/vr41xx/Kconfig"
830 source "arch/mips/cavium-octeon/Kconfig"
831 source "arch/mips/loongson/Kconfig"
832 source "arch/mips/netlogic/Kconfig"
836 config RWSEM_GENERIC_SPINLOCK
840 config RWSEM_XCHGADD_ALGORITHM
843 config ARCH_HAS_ILOG2_U32
847 config ARCH_HAS_ILOG2_U64
851 config GENERIC_HWEIGHT
855 config GENERIC_CALIBRATE_DELAY
859 config GENERIC_CLOCKEVENTS
863 config GENERIC_CMOS_UPDATE
867 config SCHED_OMIT_FRAME_POINTER
872 # Select some configuration options automatically based on user selections.
877 config ARCH_MAY_HAVE_PC_FDC
926 select ARCH_REQUIRE_GPIOLIB
932 config ARCH_DMA_ADDR_T_64BIT
933 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
938 config DMA_NONCOHERENT
940 select NEED_DMA_MAP_STATE
942 config NEED_DMA_MAP_STATE
945 config SYS_HAS_EARLY_PRINTK
949 bool "Support for hot-pluggable CPUs"
950 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
952 Say Y here to allow turning CPUs off and on. CPUs can be
953 controlled through /sys/devices/system/cpu.
954 (Note: power management support will enable this option
955 automatically on SMP systems. )
956 Say N if you want to disable CPU hotplug.
958 config SYS_SUPPORTS_HOTPLUG_CPU
973 config MIPS_DISABLE_OBSOLETE_IDE
985 config GENERIC_ISA_DMA
987 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
990 config GENERIC_ISA_DMA_SUPPORT_BROKEN
992 select GENERIC_ISA_DMA
1000 config HOLES_IN_ZONE
1004 # Endianess selection. Sufficiently obscure so many users don't know what to
1005 # answer,so we try hard to limit the available choices. Also the use of a
1006 # choice statement should be more obvious to the user.
1009 prompt "Endianess selection"
1011 Some MIPS machines can be configured for either little or big endian
1012 byte order. These modes require different kernels and a different
1013 Linux distribution. In general there is one preferred byteorder for a
1014 particular system but some systems are just as commonly used in the
1015 one or the other endianness.
1017 config CPU_BIG_ENDIAN
1019 depends on SYS_SUPPORTS_BIG_ENDIAN
1021 config CPU_LITTLE_ENDIAN
1022 bool "Little endian"
1023 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1031 config SYS_SUPPORTS_APM_EMULATION
1034 config SYS_SUPPORTS_BIG_ENDIAN
1037 config SYS_SUPPORTS_LITTLE_ENDIAN
1040 config SYS_SUPPORTS_HUGETLBFS
1042 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1069 config MIPS_BOARDS_GEN
1072 config PCI_GT64XXX_PCI0
1075 config NO_EXCEPT_FILL
1080 select SERIAL_RM9000
1086 select DMA_NONCOHERENT
1088 select SWAP_IO_SPACE
1089 select SYS_HAS_CPU_R5500
1090 select SYS_SUPPORTS_32BIT_KERNEL
1091 select SYS_SUPPORTS_64BIT_KERNEL
1092 select SYS_SUPPORTS_BIG_ENDIAN
1099 select DMA_NONCOHERENT
1100 select SYS_HAS_CPU_MIPS32_R2
1101 select SYS_SUPPORTS_32BIT_KERNEL
1102 select SYS_SUPPORTS_LITTLE_ENDIAN
1103 select SYS_SUPPORTS_BIG_ENDIAN
1105 select CPU_MIPSR2_IRQ_VI
1117 select DMA_NONCOHERENT
1119 select SYS_HAS_CPU_MIPS32_R1
1120 select SYS_HAS_EARLY_PRINTK
1121 select SYS_SUPPORTS_32BIT_KERNEL
1124 config SWAP_IO_SPACE
1127 config SERIAL_RM9000
1130 config SGI_HAS_INDYDOG
1142 config SGI_HAS_ZILOG
1145 config SGI_HAS_I8042
1148 config DEFAULT_SGI_PARTITION
1160 config MIPS_L1_CACHE_SHIFT
1162 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1163 default "6" if MIPS_CPU_SCACHE
1164 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1167 config HAVE_STD_PC_SERIAL_PORT
1171 bool "ARC console support"
1172 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1176 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1181 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1190 menu "CPU selection"
1196 config CPU_LOONGSON2E
1198 depends on SYS_HAS_CPU_LOONGSON2E
1199 select CPU_LOONGSON2
1201 The Loongson 2E processor implements the MIPS III instruction set
1202 with many extensions.
1204 It has an internal FPGA northbridge, which is compatible to
1207 config CPU_LOONGSON2F
1209 depends on SYS_HAS_CPU_LOONGSON2F
1210 select CPU_LOONGSON2
1212 select ARCH_REQUIRE_GPIOLIB
1214 The Loongson 2F processor implements the MIPS III instruction set
1215 with many extensions.
1217 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1218 have a similar programming interface with FPGA northbridge used in
1221 config CPU_MIPS32_R1
1222 bool "MIPS32 Release 1"
1223 depends on SYS_HAS_CPU_MIPS32_R1
1224 select CPU_HAS_PREFETCH
1225 select CPU_SUPPORTS_32BIT_KERNEL
1226 select CPU_SUPPORTS_HIGHMEM
1228 Choose this option to build a kernel for release 1 or later of the
1229 MIPS32 architecture. Most modern embedded systems with a 32-bit
1230 MIPS processor are based on a MIPS32 processor. If you know the
1231 specific type of processor in your system, choose those that one
1232 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1233 Release 2 of the MIPS32 architecture is available since several
1234 years so chances are you even have a MIPS32 Release 2 processor
1235 in which case you should choose CPU_MIPS32_R2 instead for better
1238 config CPU_MIPS32_R2
1239 bool "MIPS32 Release 2"
1240 depends on SYS_HAS_CPU_MIPS32_R2
1241 select CPU_HAS_PREFETCH
1242 select CPU_SUPPORTS_32BIT_KERNEL
1243 select CPU_SUPPORTS_HIGHMEM
1245 Choose this option to build a kernel for release 2 or later of the
1246 MIPS32 architecture. Most modern embedded systems with a 32-bit
1247 MIPS processor are based on a MIPS32 processor. If you know the
1248 specific type of processor in your system, choose those that one
1249 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1251 config CPU_MIPS64_R1
1252 bool "MIPS64 Release 1"
1253 depends on SYS_HAS_CPU_MIPS64_R1
1254 select CPU_HAS_PREFETCH
1255 select CPU_SUPPORTS_32BIT_KERNEL
1256 select CPU_SUPPORTS_64BIT_KERNEL
1257 select CPU_SUPPORTS_HIGHMEM
1258 select CPU_SUPPORTS_HUGEPAGES
1260 Choose this option to build a kernel for release 1 or later of the
1261 MIPS64 architecture. Many modern embedded systems with a 64-bit
1262 MIPS processor are based on a MIPS64 processor. If you know the
1263 specific type of processor in your system, choose those that one
1264 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1265 Release 2 of the MIPS64 architecture is available since several
1266 years so chances are you even have a MIPS64 Release 2 processor
1267 in which case you should choose CPU_MIPS64_R2 instead for better
1270 config CPU_MIPS64_R2
1271 bool "MIPS64 Release 2"
1272 depends on SYS_HAS_CPU_MIPS64_R2
1273 select CPU_HAS_PREFETCH
1274 select CPU_SUPPORTS_32BIT_KERNEL
1275 select CPU_SUPPORTS_64BIT_KERNEL
1276 select CPU_SUPPORTS_HIGHMEM
1277 select CPU_SUPPORTS_HUGEPAGES
1279 Choose this option to build a kernel for release 2 or later of the
1280 MIPS64 architecture. Many modern embedded systems with a 64-bit
1281 MIPS processor are based on a MIPS64 processor. If you know the
1282 specific type of processor in your system, choose those that one
1283 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1287 depends on SYS_HAS_CPU_R3000
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_HIGHMEM
1292 Please make sure to pick the right CPU type. Linux/MIPS is not
1293 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1294 *not* work on R4000 machines and vice versa. However, since most
1295 of the supported machines have an R4000 (or similar) CPU, R4x00
1296 might be a safe bet. If the resulting kernel does not work,
1297 try to recompile with R3000.
1301 depends on SYS_HAS_CPU_TX39XX
1302 select CPU_SUPPORTS_32BIT_KERNEL
1306 depends on SYS_HAS_CPU_VR41XX
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_64BIT_KERNEL
1310 The options selects support for the NEC VR4100 series of processors.
1311 Only choose this option if you have one of these processors as a
1312 kernel built with this option will not run on any other type of
1313 processor or vice versa.
1317 depends on SYS_HAS_CPU_R4300
1318 select CPU_SUPPORTS_32BIT_KERNEL
1319 select CPU_SUPPORTS_64BIT_KERNEL
1321 MIPS Technologies R4300-series processors.
1325 depends on SYS_HAS_CPU_R4X00
1326 select CPU_SUPPORTS_32BIT_KERNEL
1327 select CPU_SUPPORTS_64BIT_KERNEL
1329 MIPS Technologies R4000-series processors other than 4300, including
1330 the R4000, R4400, R4600, and 4700.
1334 depends on SYS_HAS_CPU_TX49XX
1335 select CPU_HAS_PREFETCH
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1341 depends on SYS_HAS_CPU_R5000
1342 select CPU_SUPPORTS_32BIT_KERNEL
1343 select CPU_SUPPORTS_64BIT_KERNEL
1345 MIPS Technologies R5000-series processors other than the Nevada.
1349 depends on SYS_HAS_CPU_R5432
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_64BIT_KERNEL
1355 depends on SYS_HAS_CPU_R5500
1356 select CPU_SUPPORTS_32BIT_KERNEL
1357 select CPU_SUPPORTS_64BIT_KERNEL
1358 select CPU_SUPPORTS_HUGEPAGES
1360 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1365 depends on EXPERIMENTAL
1366 depends on SYS_HAS_CPU_R6000
1367 select CPU_SUPPORTS_32BIT_KERNEL
1369 MIPS Technologies R6000 and R6000A series processors. Note these
1370 processors are extremely rare and the support for them is incomplete.
1374 depends on SYS_HAS_CPU_NEVADA
1375 select CPU_SUPPORTS_32BIT_KERNEL
1376 select CPU_SUPPORTS_64BIT_KERNEL
1378 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1382 depends on EXPERIMENTAL
1383 depends on SYS_HAS_CPU_R8000
1384 select CPU_HAS_PREFETCH
1385 select CPU_SUPPORTS_64BIT_KERNEL
1387 MIPS Technologies R8000 processors. Note these processors are
1388 uncommon and the support for them is incomplete.
1392 depends on SYS_HAS_CPU_R10000
1393 select CPU_HAS_PREFETCH
1394 select CPU_SUPPORTS_32BIT_KERNEL
1395 select CPU_SUPPORTS_64BIT_KERNEL
1396 select CPU_SUPPORTS_HIGHMEM
1398 MIPS Technologies R10000-series processors.
1402 depends on SYS_HAS_CPU_RM7000
1403 select CPU_HAS_PREFETCH
1404 select CPU_SUPPORTS_32BIT_KERNEL
1405 select CPU_SUPPORTS_64BIT_KERNEL
1406 select CPU_SUPPORTS_HIGHMEM
1410 depends on SYS_HAS_CPU_RM9000
1411 select CPU_HAS_PREFETCH
1412 select CPU_SUPPORTS_32BIT_KERNEL
1413 select CPU_SUPPORTS_64BIT_KERNEL
1414 select CPU_SUPPORTS_HIGHMEM
1415 select WEAK_ORDERING
1419 depends on SYS_HAS_CPU_SB1
1420 select CPU_SUPPORTS_32BIT_KERNEL
1421 select CPU_SUPPORTS_64BIT_KERNEL
1422 select CPU_SUPPORTS_HIGHMEM
1423 select WEAK_ORDERING
1425 config CPU_CAVIUM_OCTEON
1426 bool "Cavium Octeon processor"
1427 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1428 select CPU_HAS_PREFETCH
1429 select CPU_SUPPORTS_64BIT_KERNEL
1430 select SYS_SUPPORTS_SMP
1431 select NR_CPUS_DEFAULT_16
1432 select WEAK_ORDERING
1433 select CPU_SUPPORTS_HIGHMEM
1434 select CPU_SUPPORTS_HUGEPAGES
1436 The Cavium Octeon processor is a highly integrated chip containing
1437 many ethernet hardware widgets for networking tasks. The processor
1438 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1439 Full details can be found at http://www.caviumnetworks.com.
1441 config CPU_BMIPS3300
1443 depends on SYS_HAS_CPU_BMIPS3300
1446 Broadcom BMIPS3300 processors.
1448 config CPU_BMIPS4350
1450 depends on SYS_HAS_CPU_BMIPS4350
1452 select SYS_SUPPORTS_SMP
1453 select SYS_SUPPORTS_HOTPLUG_CPU
1455 Broadcom BMIPS4350 ("VIPER") processors.
1457 config CPU_BMIPS4380
1459 depends on SYS_HAS_CPU_BMIPS4380
1461 select SYS_SUPPORTS_SMP
1462 select SYS_SUPPORTS_HOTPLUG_CPU
1464 Broadcom BMIPS4380 processors.
1466 config CPU_BMIPS5000
1468 depends on SYS_HAS_CPU_BMIPS5000
1470 select CPU_SUPPORTS_HIGHMEM
1471 select MIPS_CPU_SCACHE
1472 select SYS_SUPPORTS_SMP
1473 select SYS_SUPPORTS_HOTPLUG_CPU
1475 Broadcom BMIPS5000 processors.
1478 bool "Netlogic XLR SoC"
1479 depends on SYS_HAS_CPU_XLR
1480 select CPU_SUPPORTS_32BIT_KERNEL
1481 select CPU_SUPPORTS_64BIT_KERNEL
1482 select CPU_SUPPORTS_HIGHMEM
1483 select WEAK_ORDERING
1484 select WEAK_REORDERING_BEYOND_LLSC
1485 select CPU_SUPPORTS_HUGEPAGES
1487 Netlogic Microsystems XLR/XLS processors.
1490 bool "Netlogic XLP SoC"
1491 depends on SYS_HAS_CPU_XLP
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HIGHMEM
1496 select WEAK_ORDERING
1497 select WEAK_REORDERING_BEYOND_LLSC
1498 select CPU_HAS_PREFETCH
1500 Netlogic Microsystems XLP processors.
1504 config CPU_NOP_WORKAROUNDS
1507 config CPU_JUMP_WORKAROUNDS
1510 config CPU_LOONGSON2F_WORKAROUNDS
1511 bool "Loongson 2F Workarounds"
1513 select CPU_NOP_WORKAROUNDS
1514 select CPU_JUMP_WORKAROUNDS
1516 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1517 require workarounds. Without workarounds the system may hang
1518 unexpectedly. For more information please refer to the gas
1519 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1521 Loongson 2F03 and later have fixed these issues and no workarounds
1522 are needed. The workarounds have no significant side effect on them
1523 but may decrease the performance of the system so this option should
1524 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1527 If unsure, please say Y.
1528 endif # CPU_LOONGSON2F
1530 config SYS_SUPPORTS_ZBOOT
1532 select HAVE_KERNEL_GZIP
1533 select HAVE_KERNEL_BZIP2
1534 select HAVE_KERNEL_LZMA
1535 select HAVE_KERNEL_LZO
1537 config SYS_SUPPORTS_ZBOOT_UART16550
1539 select SYS_SUPPORTS_ZBOOT
1541 config CPU_LOONGSON2
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select CPU_SUPPORTS_64BIT_KERNEL
1545 select CPU_SUPPORTS_HIGHMEM
1550 select CPU_SUPPORTS_32BIT_KERNEL
1551 select DMA_NONCOHERENT
1553 select SWAP_IO_SPACE
1554 select WEAK_ORDERING
1556 config SYS_HAS_CPU_LOONGSON2E
1559 config SYS_HAS_CPU_LOONGSON2F
1561 select CPU_SUPPORTS_CPUFREQ
1562 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1563 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1565 config SYS_HAS_CPU_MIPS32_R1
1568 config SYS_HAS_CPU_MIPS32_R2
1571 config SYS_HAS_CPU_MIPS64_R1
1574 config SYS_HAS_CPU_MIPS64_R2
1577 config SYS_HAS_CPU_R3000
1580 config SYS_HAS_CPU_TX39XX
1583 config SYS_HAS_CPU_VR41XX
1586 config SYS_HAS_CPU_R4300
1589 config SYS_HAS_CPU_R4X00
1592 config SYS_HAS_CPU_TX49XX
1595 config SYS_HAS_CPU_R5000
1598 config SYS_HAS_CPU_R5432
1601 config SYS_HAS_CPU_R5500
1604 config SYS_HAS_CPU_R6000
1607 config SYS_HAS_CPU_NEVADA
1610 config SYS_HAS_CPU_R8000
1613 config SYS_HAS_CPU_R10000
1616 config SYS_HAS_CPU_RM7000
1619 config SYS_HAS_CPU_RM9000
1622 config SYS_HAS_CPU_SB1
1625 config SYS_HAS_CPU_CAVIUM_OCTEON
1628 config SYS_HAS_CPU_BMIPS3300
1631 config SYS_HAS_CPU_BMIPS4350
1634 config SYS_HAS_CPU_BMIPS4380
1637 config SYS_HAS_CPU_BMIPS5000
1640 config SYS_HAS_CPU_XLR
1643 config SYS_HAS_CPU_XLP
1647 # CPU may reorder R->R, R->W, W->R, W->W
1648 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1650 config WEAK_ORDERING
1654 # CPU may reorder reads and writes beyond LL/SC
1655 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1657 config WEAK_REORDERING_BEYOND_LLSC
1662 # These two indicate any level of the MIPS32 and MIPS64 architecture
1666 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1670 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1673 # These two indicate the revision of the architecture, either Release 1 or Release 2
1677 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1681 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1683 config SYS_SUPPORTS_32BIT_KERNEL
1685 config SYS_SUPPORTS_64BIT_KERNEL
1687 config CPU_SUPPORTS_32BIT_KERNEL
1689 config CPU_SUPPORTS_64BIT_KERNEL
1691 config CPU_SUPPORTS_CPUFREQ
1693 config CPU_SUPPORTS_ADDRWINCFG
1695 config CPU_SUPPORTS_HUGEPAGES
1697 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1699 config MIPS_PGD_C0_CONTEXT
1701 default y if 64BIT && CPU_MIPSR2
1704 # Set to y for ptrace access to watch registers.
1706 config HARDWARE_WATCHPOINTS
1708 default y if CPU_MIPSR1 || CPU_MIPSR2
1714 prompt "Kernel code model"
1716 You should only select this option if you have a workload that
1717 actually benefits from 64-bit processing or if your machine has
1718 large memory. You will only be presented a single option in this
1719 menu if your system does not support both 32-bit and 64-bit kernels.
1722 bool "32-bit kernel"
1723 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1726 Select this option if you want to build a 32-bit kernel.
1728 bool "64-bit kernel"
1729 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1730 select HAVE_SYSCALL_WRAPPERS
1732 Select this option if you want to build a 64-bit kernel.
1737 prompt "Kernel page size"
1738 default PAGE_SIZE_4KB
1740 config PAGE_SIZE_4KB
1742 depends on !CPU_LOONGSON2
1744 This option select the standard 4kB Linux page size. On some
1745 R3000-family processors this is the only available page size. Using
1746 4kB page size will minimize memory consumption and is therefore
1747 recommended for low memory systems.
1749 config PAGE_SIZE_8KB
1751 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1753 Using 8kB page size will result in higher performance kernel at
1754 the price of higher memory consumption. This option is available
1755 only on R8000 and cnMIPS processors. Note that you will need a
1756 suitable Linux distribution to support this.
1758 config PAGE_SIZE_16KB
1760 depends on !CPU_R3000 && !CPU_TX39XX
1762 Using 16kB page size will result in higher performance kernel at
1763 the price of higher memory consumption. This option is available on
1764 all non-R3000 family processors. Note that you will need a suitable
1765 Linux distribution to support this.
1767 config PAGE_SIZE_32KB
1769 depends on CPU_CAVIUM_OCTEON
1771 Using 32kB page size will result in higher performance kernel at
1772 the price of higher memory consumption. This option is available
1773 only on cnMIPS cores. Note that you will need a suitable Linux
1774 distribution to support this.
1776 config PAGE_SIZE_64KB
1778 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1780 Using 64kB page size will result in higher performance kernel at
1781 the price of higher memory consumption. This option is available on
1782 all non-R3000 family processor. Not that at the time of this
1783 writing this option is still high experimental.
1787 config FORCE_MAX_ZONEORDER
1788 int "Maximum zone order"
1789 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1790 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1791 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1792 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1796 The kernel memory allocator divides physically contiguous memory
1797 blocks into "zones", where each zone is a power of two number of
1798 pages. This option selects the largest power of two that the kernel
1799 keeps in the memory allocator. If you need to allocate very large
1800 blocks of physically contiguous memory, then you may need to
1801 increase this value.
1803 This config option is actually maximum order plus one. For example,
1804 a value of 11 means that the largest free memory block is 2^10 pages.
1806 The page size is not necessarily 4KB. Keep this in mind
1807 when choosing a value for this option.
1812 config IP22_CPU_SCACHE
1817 # Support for a MIPS32 / MIPS64 style S-caches
1819 config MIPS_CPU_SCACHE
1823 config R5000_CPU_SCACHE
1827 config RM7000_CPU_SCACHE
1831 config SIBYTE_DMA_PAGEOPS
1832 bool "Use DMA to clear/copy pages"
1835 Instead of using the CPU to zero and copy pages, use a Data Mover
1836 channel. These DMA channels are otherwise unused by the standard
1837 SiByte Linux port. Seems to give a small performance benefit.
1839 config CPU_HAS_PREFETCH
1843 prompt "MIPS MT options"
1845 config MIPS_MT_DISABLED
1846 bool "Disable multithreading support."
1848 Use this option if your workload can't take advantage of
1849 MIPS hardware multithreading support. On systems that don't have
1850 the option of an MT-enabled processor this option will be the only
1851 option in this menu.
1854 bool "Use 1 TC on each available VPE for SMP"
1855 depends on SYS_SUPPORTS_MULTITHREADING
1856 select CPU_MIPSR2_IRQ_VI
1857 select CPU_MIPSR2_IRQ_EI
1859 select NR_CPUS_DEFAULT_2
1861 select SYS_SUPPORTS_SCHED_SMT if SMP
1862 select SYS_SUPPORTS_SMP
1865 This is a kernel model which is known a VSMP but lately has been
1866 marketesed into SMVP.
1867 Virtual SMP uses the processor's VPEs to implement virtual
1868 processors. In currently available configuration of the 34K processor
1869 this allows for a dual processor. Both processors will share the same
1870 primary caches; each will obtain the half of the TLB for it's own
1871 exclusive use. For a layman this model can be described as similar to
1872 what Intel calls Hyperthreading.
1874 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1877 bool "SMTC: Use all TCs on all VPEs for SMP"
1878 depends on CPU_MIPS32_R2
1879 #depends on CPU_MIPS64_R2 # once there is hardware ...
1880 depends on SYS_SUPPORTS_MULTITHREADING
1881 select CPU_MIPSR2_IRQ_VI
1882 select CPU_MIPSR2_IRQ_EI
1884 select NR_CPUS_DEFAULT_8
1886 select SYS_SUPPORTS_SMP
1889 This is a kernel model which is known a SMTC or lately has been
1890 marketesed into SMVP.
1891 is presenting the available TC's of the core as processors to Linux.
1892 On currently available 34K processors this means a Linux system will
1893 see up to 5 processors. The implementation of the SMTC kernel differs
1894 significantly from VSMP and cannot efficiently coexist in the same
1895 kernel binary so the choice between VSMP and SMTC is a compile time
1898 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1906 bool "SMT (multithreading) scheduler support"
1907 depends on SYS_SUPPORTS_SCHED_SMT
1910 SMT scheduler support improves the CPU scheduler's decision making
1911 when dealing with MIPS MT enabled cores at a cost of slightly
1912 increased overhead in some places. If unsure say N here.
1914 config SYS_SUPPORTS_SCHED_SMT
1918 config SYS_SUPPORTS_MULTITHREADING
1921 config MIPS_MT_FPAFF
1922 bool "Dynamic FPU affinity for FP-intensive threads"
1924 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1926 config MIPS_VPE_LOADER
1927 bool "VPE loader support."
1928 depends on SYS_SUPPORTS_MULTITHREADING
1929 select CPU_MIPSR2_IRQ_VI
1930 select CPU_MIPSR2_IRQ_EI
1933 Includes a loader for loading an elf relocatable object
1934 onto another VPE and running it.
1936 config MIPS_MT_SMTC_IM_BACKSTOP
1937 bool "Use per-TC register bits as backstop for inhibited IM bits"
1938 depends on MIPS_MT_SMTC
1941 To support multiple TC microthreads acting as "CPUs" within
1942 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1943 during interrupt handling. To support legacy drivers and interrupt
1944 controller management code, SMTC has a "backstop" to track and
1945 if necessary restore the interrupt mask. This has some performance
1946 impact on interrupt service overhead.
1948 config MIPS_MT_SMTC_IRQAFF
1949 bool "Support IRQ affinity API"
1950 depends on MIPS_MT_SMTC
1953 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1954 for SMTC Linux kernel. Requires platform support, of which
1955 an example can be found in the MIPS kernel i8259 and Malta
1956 platform code. Adds some overhead to interrupt dispatch, and
1957 should be used only if you know what you are doing.
1959 config MIPS_VPE_LOADER_TOM
1960 bool "Load VPE program into memory hidden from linux"
1961 depends on MIPS_VPE_LOADER
1964 The loader can use memory that is present but has been hidden from
1965 Linux using the kernel command line option "mem=xxMB". It's up to
1966 you to ensure the amount you put in the option and the space your
1967 program requires is less or equal to the amount physically present.
1969 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1970 config MIPS_VPE_APSP_API
1971 bool "Enable support for AP/SP API (RTLX)"
1972 depends on MIPS_VPE_LOADER
1975 config MIPS_APSP_KSPD
1977 depends on MIPS_VPE_APSP_API
1980 KSPD is a kernel daemon that accepts syscall requests from the SP
1981 side, actions them and returns the results. It also handles the
1982 "exit" syscall notifying other kernel modules the SP program is
1983 exiting. You probably want to say yes here.
1986 bool "MIPS CMP framework support"
1987 depends on SYS_SUPPORTS_MIPS_CMP
1989 select SYS_SUPPORTS_SMP
1990 select SYS_SUPPORTS_SCHED_SMT if SMP
1991 select WEAK_ORDERING
1994 This is a placeholder option for the GCMP work. It will need to
1995 be handled differently...
1997 config SB1_PASS_1_WORKAROUNDS
1999 depends on CPU_SB1_PASS_1
2002 config SB1_PASS_2_WORKAROUNDS
2004 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2007 config SB1_PASS_2_1_WORKAROUNDS
2009 depends on CPU_SB1 && CPU_SB1_PASS_2
2012 config 64BIT_PHYS_ADDR
2015 config ARCH_PHYS_ADDR_T_64BIT
2016 def_bool 64BIT_PHYS_ADDR
2018 config CPU_HAS_SMARTMIPS
2019 depends on SYS_SUPPORTS_SMARTMIPS
2020 bool "Support for the SmartMIPS ASE"
2022 SmartMIPS is a extension of the MIPS32 architecture aimed at
2023 increased security at both hardware and software level for
2024 smartcards. Enabling this option will allow proper use of the
2025 SmartMIPS instructions by Linux applications. However a kernel with
2026 this option will not work on a MIPS core without SmartMIPS core. If
2027 you don't know you probably don't have SmartMIPS and should say N
2037 # Vectored interrupt mode is an R2 feature
2039 config CPU_MIPSR2_IRQ_VI
2043 # Extended interrupt mode is an R2 feature
2045 config CPU_MIPSR2_IRQ_EI
2050 depends on !CPU_R3000
2053 config GENERIC_CLOCKEVENTS_BROADCAST
2059 config CPU_DADDI_WORKAROUNDS
2062 config CPU_R4000_WORKAROUNDS
2064 select CPU_R4400_WORKAROUNDS
2066 config CPU_R4400_WORKAROUNDS
2070 # - Highmem only makes sense for the 32-bit kernel.
2071 # - The current highmem code will only work properly on physically indexed
2072 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2073 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2074 # moment we protect the user and offer the highmem option only on machines
2075 # where it's known to be safe. This will not offer highmem on a few systems
2076 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2077 # indexed CPUs but we're playing safe.
2078 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2079 # know they might have memory configurations that could make use of highmem
2083 bool "High Memory Support"
2084 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2086 config CPU_SUPPORTS_HIGHMEM
2089 config SYS_SUPPORTS_HIGHMEM
2092 config SYS_SUPPORTS_SMARTMIPS
2095 config ARCH_FLATMEM_ENABLE
2097 depends on !NUMA && !CPU_LOONGSON2
2099 config ARCH_DISCONTIGMEM_ENABLE
2101 default y if SGI_IP27
2103 Say Y to support efficient handling of discontiguous physical memory,
2104 for architectures which are either NUMA (Non-Uniform Memory Access)
2105 or have huge holes in the physical address space for other reasons.
2106 See <file:Documentation/vm/numa> for more.
2108 config ARCH_SPARSEMEM_ENABLE
2110 select SPARSEMEM_STATIC
2114 depends on SYS_SUPPORTS_NUMA
2116 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2117 Access). This option improves performance on systems with more
2118 than two nodes; on two node systems it is generally better to
2119 leave it disabled; on single node systems disable this option
2122 config SYS_SUPPORTS_NUMA
2128 depends on NEED_MULTIPLE_NODES
2130 config HW_PERF_EVENTS
2131 bool "Enable hardware performance counter support for perf events"
2132 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2135 Enable hardware performance counter support for perf events. If
2136 disabled, perf events will use software events only.
2141 bool "Multi-Processing support"
2142 depends on SYS_SUPPORTS_SMP
2144 select USE_GENERIC_SMP_HELPERS
2146 This enables support for systems with more than one CPU. If you have
2147 a system with only one CPU, like most personal computers, say N. If
2148 you have a system with more than one CPU, say Y.
2150 If you say N here, the kernel will run on single and multiprocessor
2151 machines, but will use only one CPU of a multiprocessor machine. If
2152 you say Y here, the kernel will run on many, but not all,
2153 singleprocessor machines. On a singleprocessor machine, the kernel
2154 will run faster if you say N here.
2156 People using multiprocessor machines who say Y here should also say
2157 Y to "Enhanced Real Time Clock Support", below.
2159 See also the SMP-HOWTO available at
2160 <http://www.tldp.org/docs.html#howto>.
2162 If you don't know what to do here, say N.
2167 config SYS_SUPPORTS_MIPS_CMP
2170 config SYS_SUPPORTS_SMP
2173 config NR_CPUS_DEFAULT_1
2176 config NR_CPUS_DEFAULT_2
2179 config NR_CPUS_DEFAULT_4
2182 config NR_CPUS_DEFAULT_8
2185 config NR_CPUS_DEFAULT_16
2188 config NR_CPUS_DEFAULT_32
2191 config NR_CPUS_DEFAULT_64
2195 int "Maximum number of CPUs (2-64)"
2196 range 1 64 if NR_CPUS_DEFAULT_1
2198 default "1" if NR_CPUS_DEFAULT_1
2199 default "2" if NR_CPUS_DEFAULT_2
2200 default "4" if NR_CPUS_DEFAULT_4
2201 default "8" if NR_CPUS_DEFAULT_8
2202 default "16" if NR_CPUS_DEFAULT_16
2203 default "32" if NR_CPUS_DEFAULT_32
2204 default "64" if NR_CPUS_DEFAULT_64
2206 This allows you to specify the maximum number of CPUs which this
2207 kernel will support. The maximum supported value is 32 for 32-bit
2208 kernel and 64 for 64-bit kernels; the minimum value which makes
2209 sense is 1 for Qemu (useful only for kernel debugging purposes)
2210 and 2 for all others.
2212 This is purely to save memory - each supported CPU adds
2213 approximately eight kilobytes to the kernel image. For best
2214 performance should round up your number of processors to the next
2217 source "kernel/time/Kconfig"
2220 # Timer Interrupt Frequency Configuration
2224 prompt "Timer frequency"
2227 Allows the configuration of the timer frequency.
2230 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2233 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2236 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2239 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2242 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2245 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2248 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2252 config SYS_SUPPORTS_48HZ
2255 config SYS_SUPPORTS_100HZ
2258 config SYS_SUPPORTS_128HZ
2261 config SYS_SUPPORTS_250HZ
2264 config SYS_SUPPORTS_256HZ
2267 config SYS_SUPPORTS_1000HZ
2270 config SYS_SUPPORTS_1024HZ
2273 config SYS_SUPPORTS_ARBIT_HZ
2275 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2276 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2277 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2278 !SYS_SUPPORTS_1024HZ
2283 default 100 if HZ_100
2284 default 128 if HZ_128
2285 default 250 if HZ_250
2286 default 256 if HZ_256
2287 default 1000 if HZ_1000
2288 default 1024 if HZ_1024
2290 source "kernel/Kconfig.preempt"
2293 bool "Kexec system call (EXPERIMENTAL)"
2294 depends on EXPERIMENTAL
2296 kexec is a system call that implements the ability to shutdown your
2297 current kernel, and to start another kernel. It is like a reboot
2298 but it is independent of the system firmware. And like a reboot
2299 you can start any kernel with it, not just Linux.
2301 The name comes from the similarity to the exec system call.
2303 It is an ongoing process to be certain the hardware in a machine
2304 is properly shutdown, so do not be surprised if this code does not
2305 initially work for you. It may help to enable device hotplugging
2306 support. As of this writing the exact hardware interface is
2307 strongly in flux, so no good recommendation can be made.
2310 bool "Enable seccomp to safely compute untrusted bytecode"
2314 This kernel feature is useful for number crunching applications
2315 that may need to compute untrusted bytecode during their
2316 execution. By using pipes or other transports made available to
2317 the process as file descriptors supporting the read/write
2318 syscalls, it's possible to isolate those applications in
2319 their own address space using seccomp. Once seccomp is
2320 enabled via /proc/<pid>/seccomp, it cannot be disabled
2321 and the task is only allowed to execute a few safe syscalls
2322 defined by each seccomp mode.
2324 If unsure, say Y. Only embedded should say N here.
2327 bool "Flattened Device Tree support"
2329 select OF_EARLY_FLATTREE
2331 Include support for flattened device tree machine descriptions.
2335 config LOCKDEP_SUPPORT
2339 config STACKTRACE_SUPPORT
2343 source "init/Kconfig"
2345 source "kernel/Kconfig.freezer"
2347 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2355 bool "Support for PCI controller"
2356 depends on HW_HAS_PCI
2358 select GENERIC_PCI_IOMAP
2360 Find out whether you have a PCI motherboard. PCI is the name of a
2361 bus system, i.e. the way the CPU talks to the other stuff inside
2362 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2368 source "drivers/pci/Kconfig"
2371 # ISA support is now enabled via select. Too many systems still have the one
2372 # or other ISA chip on the board that users don't know about so don't expect
2373 # users to choose the right thing ...
2380 depends on HW_HAS_EISA
2382 select GENERIC_ISA_DMA
2384 The Extended Industry Standard Architecture (EISA) bus was
2385 developed as an open alternative to the IBM MicroChannel bus.
2387 The EISA bus provided some of the features of the IBM MicroChannel
2388 bus while maintaining backward compatibility with cards made for
2389 the older ISA bus. The EISA bus saw limited use between 1988 and
2390 1995 when it was made obsolete by the PCI bus.
2392 Say Y here if you are building a kernel for an EISA-based machine.
2396 source "drivers/eisa/Kconfig"
2399 bool "TURBOchannel support"
2400 depends on MACH_DECSTATION
2402 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2403 processors. TURBOchannel programming specifications are available
2405 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2407 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2408 Linux driver support status is documented at:
2409 <http://www.linux-mips.org/wiki/DECstation>
2419 select MIPS_EXTERNAL_TIMER
2424 source "drivers/pcmcia/Kconfig"
2426 source "drivers/pci/hotplug/Kconfig"
2429 bool "RapidIO support"
2433 If you say Y here, the kernel will include drivers and
2434 infrastructure code to support RapidIO interconnect devices.
2436 source "drivers/rapidio/Kconfig"
2440 menu "Executable file formats"
2442 source "fs/Kconfig.binfmt"
2447 config MIPS32_COMPAT
2448 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2451 Select this option if you want Linux/MIPS 32-bit binary
2452 compatibility. Since all software available for Linux/MIPS is
2453 currently 32-bit you should say Y here.
2457 depends on MIPS32_COMPAT
2460 config SYSVIPC_COMPAT
2462 depends on COMPAT && SYSVIPC
2466 bool "Kernel support for o32 binaries"
2467 depends on MIPS32_COMPAT
2469 Select this option if you want to run o32 binaries. These are pure
2470 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2471 existing binaries are in this format.
2476 bool "Kernel support for n32 binaries"
2477 depends on MIPS32_COMPAT
2479 Select this option if you want to run n32 binaries. These are
2480 64-bit binaries using 32-bit quantities for addressing and certain
2481 data that would normally be 64-bit. They are used in special
2488 default y if MIPS32_O32 || MIPS32_N32
2492 menu "Power management options"
2494 config ARCH_HIBERNATION_POSSIBLE
2496 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2498 config ARCH_SUSPEND_POSSIBLE
2500 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2502 source "kernel/power/Kconfig"
2506 source "arch/mips/kernel/cpufreq/Kconfig"
2508 source "net/Kconfig"
2510 source "drivers/Kconfig"
2514 source "arch/mips/Kconfig.debug"
2516 source "security/Kconfig"
2518 source "crypto/Kconfig"
2520 source "lib/Kconfig"