4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
21 select RTC_LIB if !MACH_LOONGSON
22 select GENERIC_ATOMIC64 if !64BIT
23 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
25 select HAVE_DMA_API_DEBUG
26 select HAVE_GENERIC_HARDIRQS
27 select GENERIC_IRQ_PROBE
28 select GENERIC_IRQ_SHOW
29 select HAVE_ARCH_JUMP_LABEL
30 select IRQ_FORCED_THREADING
32 select HAVE_MEMBLOCK_NODE_MAP
33 select ARCH_DISCARD_MEMBLOCK
34 select GENERIC_SMP_IDLE_THREAD
35 select BUILDTIME_EXTABLE_SORT
36 select GENERIC_CLOCKEVENTS
37 select GENERIC_CMOS_UPDATE
39 menu "Machine selection"
49 bool "Alchemy processor based machines"
50 select 64BIT_PHYS_ADDR
54 select SYS_HAS_CPU_MIPS32_R1
55 select SYS_SUPPORTS_32BIT_KERNEL
56 select SYS_SUPPORTS_APM_EMULATION
58 select ARCH_WANT_OPTIONAL_GPIOLIB
59 select SYS_SUPPORTS_ZBOOT
60 select USB_ARCH_HAS_OHCI
61 select USB_ARCH_HAS_EHCI
64 bool "Texas Instruments AR7"
66 select DMA_NONCOHERENT
72 select SYS_HAS_CPU_MIPS32_R1
73 select SYS_HAS_EARLY_PRINTK
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_LITTLE_ENDIAN
76 select SYS_SUPPORTS_ZBOOT_UART16550
77 select ARCH_REQUIRE_GPIOLIB
80 Support for the Texas Instruments AR7 System-on-a-Chip
81 family: TNETD7100, 7200 and 7300.
84 bool "Atheros AR71XX/AR724X/AR913X based boards"
85 select ARCH_REQUIRE_GPIOLIB
89 select DMA_NONCOHERENT
92 select SYS_HAS_CPU_MIPS32_R2
93 select SYS_HAS_EARLY_PRINTK
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_BIG_ENDIAN
97 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
100 bool "Broadcom BCM47XX based boards"
103 select DMA_NONCOHERENT
106 select SYS_SUPPORTS_32BIT_KERNEL
107 select SYS_SUPPORTS_LITTLE_ENDIAN
109 select SYS_HAS_EARLY_PRINTK
112 Support for BCM47XX based boards
115 bool "Broadcom BCM63XX based boards"
118 select DMA_NONCOHERENT
120 select SYS_HAS_CPU_MIPS32_R1
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_BIG_ENDIAN
123 select SYS_HAS_EARLY_PRINTK
125 select ARCH_REQUIRE_GPIOLIB
127 Support for BCM63XX based boards
134 select DMA_NONCOHERENT
140 select PCI_GT64XXX_PCI0
142 select SYS_HAS_CPU_NEVADA
143 select SYS_HAS_EARLY_PRINTK
144 select SYS_SUPPORTS_32BIT_KERNEL
145 select SYS_SUPPORTS_64BIT_KERNEL
146 select SYS_SUPPORTS_LITTLE_ENDIAN
148 config MACH_DECSTATION
155 select CPU_DADDI_WORKAROUNDS if 64BIT
156 select CPU_R4000_WORKAROUNDS if 64BIT
157 select CPU_R4400_WORKAROUNDS if 64BIT
158 select DMA_NONCOHERENT
161 select SYS_HAS_CPU_R3000
162 select SYS_HAS_CPU_R4X00
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
165 select SYS_SUPPORTS_LITTLE_ENDIAN
166 select SYS_SUPPORTS_128HZ
167 select SYS_SUPPORTS_256HZ
168 select SYS_SUPPORTS_1024HZ
170 This enables support for DEC's MIPS based workstations. For details
171 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
172 DECstation porting pages on <http://decstation.unix-ag.org/>.
174 If you have one of the following DECstation Models you definitely
175 want to choose R4xx0 for the CPU Type:
182 otherwise choose R3000.
185 bool "Jazz family of machines"
188 select ARCH_MAY_HAVE_PC_FDC
191 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
192 select GENERIC_ISA_DMA
193 select HAVE_PCSPKR_PLATFORM
198 select SYS_HAS_CPU_R4X00
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
201 select SYS_SUPPORTS_100HZ
203 This a family of machines based on the MIPS R4030 chipset which was
204 used by several vendors to build RISC/os and Windows NT workstations.
205 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
206 Olivetti M700-10 workstations.
209 bool "Ingenic JZ4740 based machines"
210 select SYS_HAS_CPU_MIPS32_R1
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_LITTLE_ENDIAN
213 select DMA_NONCOHERENT
216 select ARCH_REQUIRE_GPIOLIB
217 select SYS_HAS_EARLY_PRINTK
220 select GENERIC_IRQ_CHIP
223 bool "Lantiq based platforms"
224 select DMA_NONCOHERENT
228 select SYS_HAS_CPU_MIPS32_R1
229 select SYS_HAS_CPU_MIPS32_R2
230 select SYS_SUPPORTS_BIG_ENDIAN
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_MULTITHREADING
233 select SYS_HAS_EARLY_PRINTK
234 select ARCH_REQUIRE_GPIOLIB
237 select HAVE_MACH_CLKDEV
242 bool "LASAT Networks platforms"
245 select DMA_NONCOHERENT
246 select SYS_HAS_EARLY_PRINTK
249 select PCI_GT64XXX_PCI0
251 select R5000_CPU_SCACHE
252 select SYS_HAS_CPU_R5000
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
255 select SYS_SUPPORTS_LITTLE_ENDIAN
258 bool "Loongson family of machines"
259 select SYS_SUPPORTS_ZBOOT
261 This enables the support of Loongson family of machines.
263 Loongson is a family of general-purpose MIPS-compatible CPUs.
264 developed at Institute of Computing Technology (ICT),
265 Chinese Academy of Sciences (CAS) in the People's Republic
266 of China. The chief architect is Professor Weiwu Hu.
269 bool "MIPS Malta board"
270 select ARCH_MAY_HAVE_PC_FDC
275 select DMA_NONCOHERENT
276 select GENERIC_ISA_DMA
277 select HAVE_PCSPKR_PLATFORM
283 select MIPS_BOARDS_GEN
285 select MIPS_CPU_SCACHE
286 select PCI_GT64XXX_PCI0
289 select SYS_HAS_CPU_MIPS32_R1
290 select SYS_HAS_CPU_MIPS32_R2
291 select SYS_HAS_CPU_MIPS64_R1
292 select SYS_HAS_CPU_MIPS64_R2
293 select SYS_HAS_CPU_NEVADA
294 select SYS_HAS_CPU_RM7000
295 select SYS_HAS_EARLY_PRINTK
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_64BIT_KERNEL
298 select SYS_SUPPORTS_BIG_ENDIAN
299 select SYS_SUPPORTS_LITTLE_ENDIAN
300 select SYS_SUPPORTS_MIPS_CMP
301 select SYS_SUPPORTS_MULTITHREADING
302 select SYS_SUPPORTS_SMARTMIPS
303 select SYS_SUPPORTS_ZBOOT
305 This enables support for the MIPS Technologies Malta evaluation
309 bool 'MIPS simulator (MIPSsim)'
312 select DMA_NONCOHERENT
313 select SYS_HAS_EARLY_PRINTK
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_HAS_EARLY_PRINTK
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_MULTITHREADING
322 select SYS_SUPPORTS_LITTLE_ENDIAN
324 This option enables support for MIPS Technologies MIPSsim software
328 bool "NEC EMMA2RH Mark-eins board"
332 This enables support for the NEC Electronics Mark-eins boards.
335 bool "NEC VR4100 series based machines"
338 select SYS_HAS_CPU_VR41XX
339 select ARCH_REQUIRE_GPIOLIB
342 bool "NXP STB220 board"
345 Support for NXP Semiconductors STB220 Development Board.
352 Support for NXP Semiconductors STB225 Development Board.
355 bool "NXP PNX8550 based JBS board"
357 select SYS_SUPPORTS_LITTLE_ENDIAN
359 config PNX8550_STB810
360 bool "NXP PNX8550 based STB810 board"
362 select SYS_SUPPORTS_LITTLE_ENDIAN
365 bool "PMC-Sierra MSP chipsets"
366 depends on EXPERIMENTAL
369 select DMA_NONCOHERENT
371 select NO_EXCEPT_FILL
373 select SYS_HAS_CPU_MIPS32_R1
374 select SYS_HAS_CPU_MIPS32_R2
375 select SYS_SUPPORTS_32BIT_KERNEL
376 select SYS_SUPPORTS_BIG_ENDIAN
379 select SERIAL_8250_CONSOLE
381 This adds support for the PMC-Sierra family of Multi-Service
382 Processor System-On-A-Chips. These parts include a number
383 of integrated peripherals, interfaces and DSPs in addition to
384 a variety of MIPS cores.
387 bool "PMC-Sierra Yosemite eval board"
396 select SYS_HAS_CPU_RM9000
397 select SYS_HAS_EARLY_PRINTK
398 select SYS_SUPPORTS_32BIT_KERNEL
399 select SYS_SUPPORTS_64BIT_KERNEL
400 select SYS_SUPPORTS_BIG_ENDIAN
401 select SYS_SUPPORTS_HIGHMEM
402 select SYS_SUPPORTS_SMP
404 Yosemite is an evaluation board for the RM9000x2 processor
405 manufactured by PMC-Sierra.
411 select CPU_MIPSR2_IRQ_VI
412 select CPU_MIPSR2_IRQ_EI
414 select DMA_NONCOHERENT
416 select SYS_HAS_EARLY_PRINTK
417 select SYS_HAS_CPU_MIPS32_R2
418 select SYS_SUPPORTS_32BIT_KERNEL
419 select SYS_SUPPORTS_BIG_ENDIAN
420 select SYS_SUPPORTS_HIGHMEM
421 select USB_OHCI_LITTLE_ENDIAN
423 This enables support for the Cisco PowerTV Platform.
426 bool "SGI IP22 (Indy/Indigo2)"
432 select DEFAULT_SGI_PARTITION
433 select DMA_NONCOHERENT
437 select IP22_CPU_SCACHE
439 select GENERIC_ISA_DMA_SUPPORT_BROKEN
441 select SGI_HAS_INDYDOG
447 select SYS_HAS_CPU_R4X00
448 select SYS_HAS_CPU_R5000
450 # Disable EARLY_PRINTK for now since it leads to overwritten prom
451 # memory during early boot on some machines.
453 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
454 # for a more details discussion
456 # select SYS_HAS_EARLY_PRINTK
457 select SYS_SUPPORTS_32BIT_KERNEL
458 select SYS_SUPPORTS_64BIT_KERNEL
459 select SYS_SUPPORTS_BIG_ENDIAN
461 This are the SGI Indy, Challenge S and Indigo2, as well as certain
462 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
463 that runs on these, say Y here.
466 bool "SGI IP27 (Origin200/2000)"
470 select DEFAULT_SGI_PARTITION
472 select SYS_HAS_EARLY_PRINTK
474 select NR_CPUS_DEFAULT_64
475 select SYS_HAS_CPU_R10000
476 select SYS_SUPPORTS_64BIT_KERNEL
477 select SYS_SUPPORTS_BIG_ENDIAN
478 select SYS_SUPPORTS_NUMA
479 select SYS_SUPPORTS_SMP
481 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
482 workstations. To compile a Linux kernel that runs on these, say Y
486 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
487 depends on EXPERIMENTAL
493 select DEFAULT_SGI_PARTITION
494 select DMA_NONCOHERENT
495 select GENERIC_ISA_DMA_SUPPORT_BROKEN
501 select SGI_HAS_INDYDOG
507 select SYS_HAS_CPU_R10000
509 # Disable EARLY_PRINTK for now since it leads to overwritten prom
510 # memory during early boot on some machines.
512 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
513 # for a more details discussion
515 # select SYS_HAS_EARLY_PRINTK
516 select SYS_SUPPORTS_64BIT_KERNEL
517 select SYS_SUPPORTS_BIG_ENDIAN
519 This is the SGI Indigo2 with R10000 processor. To compile a Linux
520 kernel that runs on these, say Y here.
529 select DMA_NONCOHERENT
532 select R5000_CPU_SCACHE
533 select RM7000_CPU_SCACHE
534 select SYS_HAS_CPU_R5000
535 select SYS_HAS_CPU_R10000 if BROKEN
536 select SYS_HAS_CPU_RM7000
537 select SYS_HAS_CPU_NEVADA
538 select SYS_SUPPORTS_64BIT_KERNEL
539 select SYS_SUPPORTS_BIG_ENDIAN
541 If you want this kernel to run on SGI O2 workstation, say Y here.
544 bool "Sibyte BCM91120C-CRhine"
545 depends on EXPERIMENTAL
548 select SIBYTE_BCM1120
550 select SYS_HAS_CPU_SB1
551 select SYS_SUPPORTS_BIG_ENDIAN
552 select SYS_SUPPORTS_LITTLE_ENDIAN
555 bool "Sibyte BCM91120x-Carmel"
556 depends on EXPERIMENTAL
559 select SIBYTE_BCM1120
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_LITTLE_ENDIAN
566 bool "Sibyte BCM91125C-CRhone"
567 depends on EXPERIMENTAL
570 select SIBYTE_BCM1125
572 select SYS_HAS_CPU_SB1
573 select SYS_SUPPORTS_BIG_ENDIAN
574 select SYS_SUPPORTS_HIGHMEM
575 select SYS_SUPPORTS_LITTLE_ENDIAN
578 bool "Sibyte BCM91125E-Rhone"
579 depends on EXPERIMENTAL
582 select SIBYTE_BCM1125H
584 select SYS_HAS_CPU_SB1
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_LITTLE_ENDIAN
589 bool "Sibyte BCM91250A-SWARM"
592 select HAVE_PATA_PLATFORM
593 select NR_CPUS_DEFAULT_2
596 select SYS_HAS_CPU_SB1
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_HIGHMEM
599 select SYS_SUPPORTS_LITTLE_ENDIAN
600 select ZONE_DMA32 if 64BIT
602 config SIBYTE_LITTLESUR
603 bool "Sibyte BCM91250C2-LittleSur"
604 depends on EXPERIMENTAL
607 select HAVE_PATA_PLATFORM
608 select NR_CPUS_DEFAULT_2
611 select SYS_HAS_CPU_SB1
612 select SYS_SUPPORTS_BIG_ENDIAN
613 select SYS_SUPPORTS_HIGHMEM
614 select SYS_SUPPORTS_LITTLE_ENDIAN
616 config SIBYTE_SENTOSA
617 bool "Sibyte BCM91250E-Sentosa"
618 depends on EXPERIMENTAL
621 select NR_CPUS_DEFAULT_2
624 select SYS_HAS_CPU_SB1
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select SYS_SUPPORTS_LITTLE_ENDIAN
629 bool "Sibyte BCM91480B-BigSur"
632 select NR_CPUS_DEFAULT_4
633 select SIBYTE_BCM1x80
635 select SYS_HAS_CPU_SB1
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select SYS_SUPPORTS_HIGHMEM
638 select SYS_SUPPORTS_LITTLE_ENDIAN
639 select ZONE_DMA32 if 64BIT
642 bool "SNI RM200/300/400"
643 select ARC if CPU_LITTLE_ENDIAN
644 select ARC32 if CPU_LITTLE_ENDIAN
645 select SNIPROM if CPU_BIG_ENDIAN
646 select ARCH_MAY_HAVE_PC_FDC
650 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
651 select DMA_NONCOHERENT
652 select GENERIC_ISA_DMA
653 select HAVE_PCSPKR_PLATFORM
660 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
661 select SYS_HAS_CPU_R4X00
662 select SYS_HAS_CPU_R5000
663 select SYS_HAS_CPU_R10000
664 select R5000_CPU_SCACHE
665 select SYS_HAS_EARLY_PRINTK
666 select SYS_SUPPORTS_32BIT_KERNEL
667 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
668 select SYS_SUPPORTS_BIG_ENDIAN
669 select SYS_SUPPORTS_HIGHMEM
670 select SYS_SUPPORTS_LITTLE_ENDIAN
672 The SNI RM200/300/400 are MIPS-based machines manufactured by
673 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
674 Technology and now in turn merged with Fujitsu. Say Y here to
675 support this machine type.
678 bool "Toshiba TX39 series based machines"
681 bool "Toshiba TX49 series based machines"
683 config MIKROTIK_RB532
684 bool "Mikrotik RB532 boards"
687 select DMA_NONCOHERENT
690 select SYS_HAS_CPU_MIPS32_R1
691 select SYS_SUPPORTS_32BIT_KERNEL
692 select SYS_SUPPORTS_LITTLE_ENDIAN
695 select ARCH_REQUIRE_GPIOLIB
697 Support the Mikrotik(tm) RouterBoard 532 series,
698 based on the IDT RC32434 SoC.
701 bool "Wind River PPMC board"
706 select DMA_NONCOHERENT
708 select PCI_GT64XXX_PCI0
710 select SYS_HAS_CPU_MIPS32_R1
711 select SYS_HAS_CPU_MIPS32_R2
712 select SYS_HAS_CPU_MIPS64_R1
713 select SYS_HAS_CPU_NEVADA
714 select SYS_HAS_CPU_RM7000
715 select SYS_SUPPORTS_32BIT_KERNEL
716 select SYS_SUPPORTS_64BIT_KERNEL
717 select SYS_SUPPORTS_BIG_ENDIAN
718 select SYS_SUPPORTS_LITTLE_ENDIAN
720 This enables support for the Wind River MIPS32 4KC PPMC evaluation
721 board, which is based on GT64120 bridge chip.
723 config CAVIUM_OCTEON_SIMULATOR
724 bool "Cavium Networks Octeon Simulator"
726 select 64BIT_PHYS_ADDR
728 select SYS_SUPPORTS_64BIT_KERNEL
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_HOTPLUG_CPU
731 select SYS_HAS_CPU_CAVIUM_OCTEON
734 The Octeon simulator is software performance model of the Cavium
735 Octeon Processor. It supports simulating Octeon processors on x86
738 config CAVIUM_OCTEON_REFERENCE_BOARD
739 bool "Cavium Networks Octeon reference board"
741 select 64BIT_PHYS_ADDR
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select SYS_SUPPORTS_HOTPLUG_CPU
746 select SYS_HAS_EARLY_PRINTK
747 select SYS_HAS_CPU_CAVIUM_OCTEON
750 select ARCH_SUPPORTS_MSI
752 select USB_ARCH_HAS_OHCI
753 select USB_ARCH_HAS_EHCI
756 This option supports all of the Octeon reference boards from Cavium
757 Networks. It builds a kernel that dynamically determines the Octeon
758 CPU type and supports all known board reference implementations.
759 Some of the supported boards are:
766 Say Y here for most Octeon reference boards.
769 bool "Netlogic XLR/XLS based systems"
770 depends on EXPERIMENTAL
773 select SYS_HAS_CPU_XLR
774 select SYS_SUPPORTS_SMP
777 select SYS_SUPPORTS_32BIT_KERNEL
778 select SYS_SUPPORTS_64BIT_KERNEL
779 select 64BIT_PHYS_ADDR
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_HIGHMEM
783 select NR_CPUS_DEFAULT_32
787 select ARCH_SUPPORTS_MSI
788 select ZONE_DMA if 64BIT
790 select SYS_HAS_EARLY_PRINTK
792 Support for systems based on Netlogic XLR and XLS processors.
793 Say Y here if you have a XLR or XLS based board.
796 bool "Netlogic XLP based systems"
797 depends on EXPERIMENTAL
800 select SYS_HAS_CPU_XLP
801 select SYS_SUPPORTS_SMP
804 select SYS_SUPPORTS_32BIT_KERNEL
805 select SYS_SUPPORTS_64BIT_KERNEL
806 select 64BIT_PHYS_ADDR
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_LITTLE_ENDIAN
809 select SYS_SUPPORTS_HIGHMEM
811 select NR_CPUS_DEFAULT_32
815 select ZONE_DMA if 64BIT
817 select SYS_HAS_EARLY_PRINTK
819 This board is based on Netlogic XLP Processor.
820 Say Y here if you have a XLP based board.
824 source "arch/mips/alchemy/Kconfig"
825 source "arch/mips/ath79/Kconfig"
826 source "arch/mips/bcm47xx/Kconfig"
827 source "arch/mips/bcm63xx/Kconfig"
828 source "arch/mips/jazz/Kconfig"
829 source "arch/mips/jz4740/Kconfig"
830 source "arch/mips/lantiq/Kconfig"
831 source "arch/mips/lasat/Kconfig"
832 source "arch/mips/pmc-sierra/Kconfig"
833 source "arch/mips/powertv/Kconfig"
834 source "arch/mips/sgi-ip27/Kconfig"
835 source "arch/mips/sibyte/Kconfig"
836 source "arch/mips/txx9/Kconfig"
837 source "arch/mips/vr41xx/Kconfig"
838 source "arch/mips/cavium-octeon/Kconfig"
839 source "arch/mips/loongson/Kconfig"
840 source "arch/mips/netlogic/Kconfig"
844 config RWSEM_GENERIC_SPINLOCK
848 config RWSEM_XCHGADD_ALGORITHM
851 config ARCH_HAS_ILOG2_U32
855 config ARCH_HAS_ILOG2_U64
859 config GENERIC_HWEIGHT
863 config GENERIC_CALIBRATE_DELAY
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 # Endianness 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 "Endianness 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 ARCH_SPARSEMEM_ENABLE
1429 select CPU_HAS_PREFETCH
1430 select CPU_SUPPORTS_64BIT_KERNEL
1431 select SYS_SUPPORTS_SMP
1432 select NR_CPUS_DEFAULT_16
1433 select WEAK_ORDERING
1434 select CPU_SUPPORTS_HIGHMEM
1435 select CPU_SUPPORTS_HUGEPAGES
1437 The Cavium Octeon processor is a highly integrated chip containing
1438 many ethernet hardware widgets for networking tasks. The processor
1439 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1440 Full details can be found at http://www.caviumnetworks.com.
1442 config CPU_BMIPS3300
1444 depends on SYS_HAS_CPU_BMIPS3300
1447 Broadcom BMIPS3300 processors.
1449 config CPU_BMIPS4350
1451 depends on SYS_HAS_CPU_BMIPS4350
1453 select SYS_SUPPORTS_SMP
1454 select SYS_SUPPORTS_HOTPLUG_CPU
1456 Broadcom BMIPS4350 ("VIPER") processors.
1458 config CPU_BMIPS4380
1460 depends on SYS_HAS_CPU_BMIPS4380
1462 select SYS_SUPPORTS_SMP
1463 select SYS_SUPPORTS_HOTPLUG_CPU
1465 Broadcom BMIPS4380 processors.
1467 config CPU_BMIPS5000
1469 depends on SYS_HAS_CPU_BMIPS5000
1471 select CPU_SUPPORTS_HIGHMEM
1472 select MIPS_CPU_SCACHE
1473 select SYS_SUPPORTS_SMP
1474 select SYS_SUPPORTS_HOTPLUG_CPU
1476 Broadcom BMIPS5000 processors.
1479 bool "Netlogic XLR SoC"
1480 depends on SYS_HAS_CPU_XLR
1481 select CPU_SUPPORTS_32BIT_KERNEL
1482 select CPU_SUPPORTS_64BIT_KERNEL
1483 select CPU_SUPPORTS_HIGHMEM
1484 select WEAK_ORDERING
1485 select WEAK_REORDERING_BEYOND_LLSC
1486 select CPU_SUPPORTS_HUGEPAGES
1488 Netlogic Microsystems XLR/XLS processors.
1491 bool "Netlogic XLP SoC"
1492 depends on SYS_HAS_CPU_XLP
1493 select CPU_SUPPORTS_32BIT_KERNEL
1494 select CPU_SUPPORTS_64BIT_KERNEL
1495 select CPU_SUPPORTS_HIGHMEM
1497 select WEAK_ORDERING
1498 select WEAK_REORDERING_BEYOND_LLSC
1499 select CPU_HAS_PREFETCH
1501 Netlogic Microsystems XLP processors.
1505 config CPU_NOP_WORKAROUNDS
1508 config CPU_JUMP_WORKAROUNDS
1511 config CPU_LOONGSON2F_WORKAROUNDS
1512 bool "Loongson 2F Workarounds"
1514 select CPU_NOP_WORKAROUNDS
1515 select CPU_JUMP_WORKAROUNDS
1517 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1518 require workarounds. Without workarounds the system may hang
1519 unexpectedly. For more information please refer to the gas
1520 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1522 Loongson 2F03 and later have fixed these issues and no workarounds
1523 are needed. The workarounds have no significant side effect on them
1524 but may decrease the performance of the system so this option should
1525 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1528 If unsure, please say Y.
1529 endif # CPU_LOONGSON2F
1531 config SYS_SUPPORTS_ZBOOT
1533 select HAVE_KERNEL_GZIP
1534 select HAVE_KERNEL_BZIP2
1535 select HAVE_KERNEL_LZMA
1536 select HAVE_KERNEL_LZO
1538 config SYS_SUPPORTS_ZBOOT_UART16550
1540 select SYS_SUPPORTS_ZBOOT
1542 config CPU_LOONGSON2
1544 select CPU_SUPPORTS_32BIT_KERNEL
1545 select CPU_SUPPORTS_64BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select DMA_NONCOHERENT
1554 select SWAP_IO_SPACE
1555 select WEAK_ORDERING
1557 config SYS_HAS_CPU_LOONGSON2E
1560 config SYS_HAS_CPU_LOONGSON2F
1562 select CPU_SUPPORTS_CPUFREQ
1563 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1564 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1566 config SYS_HAS_CPU_MIPS32_R1
1569 config SYS_HAS_CPU_MIPS32_R2
1572 config SYS_HAS_CPU_MIPS64_R1
1575 config SYS_HAS_CPU_MIPS64_R2
1578 config SYS_HAS_CPU_R3000
1581 config SYS_HAS_CPU_TX39XX
1584 config SYS_HAS_CPU_VR41XX
1587 config SYS_HAS_CPU_R4300
1590 config SYS_HAS_CPU_R4X00
1593 config SYS_HAS_CPU_TX49XX
1596 config SYS_HAS_CPU_R5000
1599 config SYS_HAS_CPU_R5432
1602 config SYS_HAS_CPU_R5500
1605 config SYS_HAS_CPU_R6000
1608 config SYS_HAS_CPU_NEVADA
1611 config SYS_HAS_CPU_R8000
1614 config SYS_HAS_CPU_R10000
1617 config SYS_HAS_CPU_RM7000
1620 config SYS_HAS_CPU_RM9000
1623 config SYS_HAS_CPU_SB1
1626 config SYS_HAS_CPU_CAVIUM_OCTEON
1629 config SYS_HAS_CPU_BMIPS3300
1632 config SYS_HAS_CPU_BMIPS4350
1635 config SYS_HAS_CPU_BMIPS4380
1638 config SYS_HAS_CPU_BMIPS5000
1641 config SYS_HAS_CPU_XLR
1644 config SYS_HAS_CPU_XLP
1648 # CPU may reorder R->R, R->W, W->R, W->W
1649 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1651 config WEAK_ORDERING
1655 # CPU may reorder reads and writes beyond LL/SC
1656 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1658 config WEAK_REORDERING_BEYOND_LLSC
1663 # These two indicate any level of the MIPS32 and MIPS64 architecture
1667 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1671 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1674 # These two indicate the revision of the architecture, either Release 1 or Release 2
1678 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1682 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1684 config SYS_SUPPORTS_32BIT_KERNEL
1686 config SYS_SUPPORTS_64BIT_KERNEL
1688 config CPU_SUPPORTS_32BIT_KERNEL
1690 config CPU_SUPPORTS_64BIT_KERNEL
1692 config CPU_SUPPORTS_CPUFREQ
1694 config CPU_SUPPORTS_ADDRWINCFG
1696 config CPU_SUPPORTS_HUGEPAGES
1698 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1700 config MIPS_PGD_C0_CONTEXT
1702 default y if 64BIT && CPU_MIPSR2
1705 # Set to y for ptrace access to watch registers.
1707 config HARDWARE_WATCHPOINTS
1709 default y if CPU_MIPSR1 || CPU_MIPSR2
1715 prompt "Kernel code model"
1717 You should only select this option if you have a workload that
1718 actually benefits from 64-bit processing or if your machine has
1719 large memory. You will only be presented a single option in this
1720 menu if your system does not support both 32-bit and 64-bit kernels.
1723 bool "32-bit kernel"
1724 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1727 Select this option if you want to build a 32-bit kernel.
1729 bool "64-bit kernel"
1730 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1731 select HAVE_SYSCALL_WRAPPERS
1733 Select this option if you want to build a 64-bit kernel.
1738 prompt "Kernel page size"
1739 default PAGE_SIZE_4KB
1741 config PAGE_SIZE_4KB
1743 depends on !CPU_LOONGSON2
1745 This option select the standard 4kB Linux page size. On some
1746 R3000-family processors this is the only available page size. Using
1747 4kB page size will minimize memory consumption and is therefore
1748 recommended for low memory systems.
1750 config PAGE_SIZE_8KB
1752 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1754 Using 8kB page size will result in higher performance kernel at
1755 the price of higher memory consumption. This option is available
1756 only on R8000 and cnMIPS processors. Note that you will need a
1757 suitable Linux distribution to support this.
1759 config PAGE_SIZE_16KB
1761 depends on !CPU_R3000 && !CPU_TX39XX
1763 Using 16kB page size will result in higher performance kernel at
1764 the price of higher memory consumption. This option is available on
1765 all non-R3000 family processors. Note that you will need a suitable
1766 Linux distribution to support this.
1768 config PAGE_SIZE_32KB
1770 depends on CPU_CAVIUM_OCTEON
1772 Using 32kB page size will result in higher performance kernel at
1773 the price of higher memory consumption. This option is available
1774 only on cnMIPS cores. Note that you will need a suitable Linux
1775 distribution to support this.
1777 config PAGE_SIZE_64KB
1779 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1781 Using 64kB page size will result in higher performance kernel at
1782 the price of higher memory consumption. This option is available on
1783 all non-R3000 family processor. Not that at the time of this
1784 writing this option is still high experimental.
1788 config FORCE_MAX_ZONEORDER
1789 int "Maximum zone order"
1790 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1791 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1792 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1793 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1794 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1795 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1799 The kernel memory allocator divides physically contiguous memory
1800 blocks into "zones", where each zone is a power of two number of
1801 pages. This option selects the largest power of two that the kernel
1802 keeps in the memory allocator. If you need to allocate very large
1803 blocks of physically contiguous memory, then you may need to
1804 increase this value.
1806 This config option is actually maximum order plus one. For example,
1807 a value of 11 means that the largest free memory block is 2^10 pages.
1809 The page size is not necessarily 4KB. Keep this in mind
1810 when choosing a value for this option.
1815 config IP22_CPU_SCACHE
1820 # Support for a MIPS32 / MIPS64 style S-caches
1822 config MIPS_CPU_SCACHE
1826 config R5000_CPU_SCACHE
1830 config RM7000_CPU_SCACHE
1834 config SIBYTE_DMA_PAGEOPS
1835 bool "Use DMA to clear/copy pages"
1838 Instead of using the CPU to zero and copy pages, use a Data Mover
1839 channel. These DMA channels are otherwise unused by the standard
1840 SiByte Linux port. Seems to give a small performance benefit.
1842 config CPU_HAS_PREFETCH
1846 prompt "MIPS MT options"
1848 config MIPS_MT_DISABLED
1849 bool "Disable multithreading support."
1851 Use this option if your workload can't take advantage of
1852 MIPS hardware multithreading support. On systems that don't have
1853 the option of an MT-enabled processor this option will be the only
1854 option in this menu.
1857 bool "Use 1 TC on each available VPE for SMP"
1858 depends on SYS_SUPPORTS_MULTITHREADING
1859 select CPU_MIPSR2_IRQ_VI
1860 select CPU_MIPSR2_IRQ_EI
1862 select NR_CPUS_DEFAULT_2
1864 select SYS_SUPPORTS_SCHED_SMT if SMP
1865 select SYS_SUPPORTS_SMP
1868 This is a kernel model which is known a VSMP but lately has been
1869 marketesed into SMVP.
1870 Virtual SMP uses the processor's VPEs to implement virtual
1871 processors. In currently available configuration of the 34K processor
1872 this allows for a dual processor. Both processors will share the same
1873 primary caches; each will obtain the half of the TLB for it's own
1874 exclusive use. For a layman this model can be described as similar to
1875 what Intel calls Hyperthreading.
1877 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1880 bool "SMTC: Use all TCs on all VPEs for SMP"
1881 depends on CPU_MIPS32_R2
1882 #depends on CPU_MIPS64_R2 # once there is hardware ...
1883 depends on SYS_SUPPORTS_MULTITHREADING
1884 select CPU_MIPSR2_IRQ_VI
1885 select CPU_MIPSR2_IRQ_EI
1887 select NR_CPUS_DEFAULT_8
1889 select SYS_SUPPORTS_SMP
1892 This is a kernel model which is known a SMTC or lately has been
1893 marketesed into SMVP.
1894 is presenting the available TC's of the core as processors to Linux.
1895 On currently available 34K processors this means a Linux system will
1896 see up to 5 processors. The implementation of the SMTC kernel differs
1897 significantly from VSMP and cannot efficiently coexist in the same
1898 kernel binary so the choice between VSMP and SMTC is a compile time
1901 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1909 bool "SMT (multithreading) scheduler support"
1910 depends on SYS_SUPPORTS_SCHED_SMT
1913 SMT scheduler support improves the CPU scheduler's decision making
1914 when dealing with MIPS MT enabled cores at a cost of slightly
1915 increased overhead in some places. If unsure say N here.
1917 config SYS_SUPPORTS_SCHED_SMT
1921 config SYS_SUPPORTS_MULTITHREADING
1924 config MIPS_MT_FPAFF
1925 bool "Dynamic FPU affinity for FP-intensive threads"
1927 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1929 config MIPS_VPE_LOADER
1930 bool "VPE loader support."
1931 depends on SYS_SUPPORTS_MULTITHREADING
1932 select CPU_MIPSR2_IRQ_VI
1933 select CPU_MIPSR2_IRQ_EI
1936 Includes a loader for loading an elf relocatable object
1937 onto another VPE and running it.
1939 config MIPS_MT_SMTC_IM_BACKSTOP
1940 bool "Use per-TC register bits as backstop for inhibited IM bits"
1941 depends on MIPS_MT_SMTC
1944 To support multiple TC microthreads acting as "CPUs" within
1945 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1946 during interrupt handling. To support legacy drivers and interrupt
1947 controller management code, SMTC has a "backstop" to track and
1948 if necessary restore the interrupt mask. This has some performance
1949 impact on interrupt service overhead.
1951 config MIPS_MT_SMTC_IRQAFF
1952 bool "Support IRQ affinity API"
1953 depends on MIPS_MT_SMTC
1956 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1957 for SMTC Linux kernel. Requires platform support, of which
1958 an example can be found in the MIPS kernel i8259 and Malta
1959 platform code. Adds some overhead to interrupt dispatch, and
1960 should be used only if you know what you are doing.
1962 config MIPS_VPE_LOADER_TOM
1963 bool "Load VPE program into memory hidden from linux"
1964 depends on MIPS_VPE_LOADER
1967 The loader can use memory that is present but has been hidden from
1968 Linux using the kernel command line option "mem=xxMB". It's up to
1969 you to ensure the amount you put in the option and the space your
1970 program requires is less or equal to the amount physically present.
1972 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1973 config MIPS_VPE_APSP_API
1974 bool "Enable support for AP/SP API (RTLX)"
1975 depends on MIPS_VPE_LOADER
1978 config MIPS_APSP_KSPD
1980 depends on MIPS_VPE_APSP_API
1983 KSPD is a kernel daemon that accepts syscall requests from the SP
1984 side, actions them and returns the results. It also handles the
1985 "exit" syscall notifying other kernel modules the SP program is
1986 exiting. You probably want to say yes here.
1989 bool "MIPS CMP framework support"
1990 depends on SYS_SUPPORTS_MIPS_CMP
1992 select SYS_SUPPORTS_SMP
1993 select SYS_SUPPORTS_SCHED_SMT if SMP
1994 select WEAK_ORDERING
1997 This is a placeholder option for the GCMP work. It will need to
1998 be handled differently...
2000 config SB1_PASS_1_WORKAROUNDS
2002 depends on CPU_SB1_PASS_1
2005 config SB1_PASS_2_WORKAROUNDS
2007 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2010 config SB1_PASS_2_1_WORKAROUNDS
2012 depends on CPU_SB1 && CPU_SB1_PASS_2
2015 config 64BIT_PHYS_ADDR
2018 config ARCH_PHYS_ADDR_T_64BIT
2019 def_bool 64BIT_PHYS_ADDR
2021 config CPU_HAS_SMARTMIPS
2022 depends on SYS_SUPPORTS_SMARTMIPS
2023 bool "Support for the SmartMIPS ASE"
2025 SmartMIPS is a extension of the MIPS32 architecture aimed at
2026 increased security at both hardware and software level for
2027 smartcards. Enabling this option will allow proper use of the
2028 SmartMIPS instructions by Linux applications. However a kernel with
2029 this option will not work on a MIPS core without SmartMIPS core. If
2030 you don't know you probably don't have SmartMIPS and should say N
2040 # Vectored interrupt mode is an R2 feature
2042 config CPU_MIPSR2_IRQ_VI
2046 # Extended interrupt mode is an R2 feature
2048 config CPU_MIPSR2_IRQ_EI
2053 depends on !CPU_R3000
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
2218 # Timer Interrupt Frequency Configuration
2222 prompt "Timer frequency"
2225 Allows the configuration of the timer frequency.
2228 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2231 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2234 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2240 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2243 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2246 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2250 config SYS_SUPPORTS_48HZ
2253 config SYS_SUPPORTS_100HZ
2256 config SYS_SUPPORTS_128HZ
2259 config SYS_SUPPORTS_250HZ
2262 config SYS_SUPPORTS_256HZ
2265 config SYS_SUPPORTS_1000HZ
2268 config SYS_SUPPORTS_1024HZ
2271 config SYS_SUPPORTS_ARBIT_HZ
2273 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2274 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2275 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2276 !SYS_SUPPORTS_1024HZ
2281 default 100 if HZ_100
2282 default 128 if HZ_128
2283 default 250 if HZ_250
2284 default 256 if HZ_256
2285 default 1000 if HZ_1000
2286 default 1024 if HZ_1024
2288 source "kernel/Kconfig.preempt"
2291 bool "Kexec system call (EXPERIMENTAL)"
2292 depends on EXPERIMENTAL
2294 kexec is a system call that implements the ability to shutdown your
2295 current kernel, and to start another kernel. It is like a reboot
2296 but it is independent of the system firmware. And like a reboot
2297 you can start any kernel with it, not just Linux.
2299 The name comes from the similarity to the exec system call.
2301 It is an ongoing process to be certain the hardware in a machine
2302 is properly shutdown, so do not be surprised if this code does not
2303 initially work for you. It may help to enable device hotplugging
2304 support. As of this writing the exact hardware interface is
2305 strongly in flux, so no good recommendation can be made.
2308 bool "Enable seccomp to safely compute untrusted bytecode"
2312 This kernel feature is useful for number crunching applications
2313 that may need to compute untrusted bytecode during their
2314 execution. By using pipes or other transports made available to
2315 the process as file descriptors supporting the read/write
2316 syscalls, it's possible to isolate those applications in
2317 their own address space using seccomp. Once seccomp is
2318 enabled via /proc/<pid>/seccomp, it cannot be disabled
2319 and the task is only allowed to execute a few safe syscalls
2320 defined by each seccomp mode.
2322 If unsure, say Y. Only embedded should say N here.
2325 bool "Flattened Device Tree support"
2327 select OF_EARLY_FLATTREE
2330 Include support for flattened device tree machine descriptions.
2334 config LOCKDEP_SUPPORT
2338 config STACKTRACE_SUPPORT
2342 source "init/Kconfig"
2344 source "kernel/Kconfig.freezer"
2346 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2354 bool "Support for PCI controller"
2355 depends on HW_HAS_PCI
2357 select GENERIC_PCI_IOMAP
2358 select NO_GENERIC_PCI_IOPORT_MAP
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
2458 select ARCH_WANT_OLD_COMPAT_IPC
2461 config SYSVIPC_COMPAT
2463 depends on COMPAT && SYSVIPC
2467 bool "Kernel support for o32 binaries"
2468 depends on MIPS32_COMPAT
2470 Select this option if you want to run o32 binaries. These are pure
2471 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2472 existing binaries are in this format.
2477 bool "Kernel support for n32 binaries"
2478 depends on MIPS32_COMPAT
2480 Select this option if you want to run n32 binaries. These are
2481 64-bit binaries using 32-bit quantities for addressing and certain
2482 data that would normally be 64-bit. They are used in special
2489 default y if MIPS32_O32 || MIPS32_N32
2493 menu "Power management options"
2495 config ARCH_HIBERNATION_POSSIBLE
2497 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2499 config ARCH_SUSPEND_POSSIBLE
2501 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2503 source "kernel/power/Kconfig"
2507 source "arch/mips/kernel/cpufreq/Kconfig"
2509 source "net/Kconfig"
2511 source "drivers/Kconfig"
2515 source "arch/mips/Kconfig.debug"
2517 source "security/Kconfig"
2519 source "crypto/Kconfig"
2521 source "lib/Kconfig"