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 RTC_LIB if !MACH_LOONGSON
20 select GENERIC_ATOMIC64 if !64BIT
22 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_HARDIRQS
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select HAVE_ARCH_JUMP_LABEL
27 select IRQ_FORCED_THREADING
29 menu "Machine selection"
39 bool "Alchemy processor based machines"
40 select 64BIT_PHYS_ADDR
44 select SYS_HAS_CPU_MIPS32_R1
45 select SYS_SUPPORTS_32BIT_KERNEL
46 select SYS_SUPPORTS_APM_EMULATION
48 select ARCH_WANT_OPTIONAL_GPIOLIB
49 select SYS_SUPPORTS_ZBOOT
50 select USB_ARCH_HAS_OHCI
51 select USB_ARCH_HAS_EHCI
54 bool "Texas Instruments AR7"
56 select DMA_NONCOHERENT
62 select SYS_HAS_CPU_MIPS32_R1
63 select SYS_HAS_EARLY_PRINTK
64 select SYS_SUPPORTS_32BIT_KERNEL
65 select SYS_SUPPORTS_LITTLE_ENDIAN
66 select SYS_SUPPORTS_ZBOOT_UART16550
67 select ARCH_REQUIRE_GPIOLIB
71 Support for the Texas Instruments AR7 System-on-a-Chip
72 family: TNETD7100, 7200 and 7300.
75 bool "Atheros AR71XX/AR724X/AR913X based boards"
76 select ARCH_REQUIRE_GPIOLIB
80 select DMA_NONCOHERENT
83 select SYS_HAS_CPU_MIPS32_R2
84 select SYS_HAS_EARLY_PRINTK
85 select SYS_SUPPORTS_32BIT_KERNEL
86 select SYS_SUPPORTS_BIG_ENDIAN
88 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
91 bool "Broadcom BCM47XX based boards"
94 select DMA_NONCOHERENT
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_HAS_EARLY_PRINTK
103 Support for BCM47XX based boards
106 bool "Broadcom BCM63XX based boards"
109 select DMA_NONCOHERENT
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_HAS_EARLY_PRINTK
116 select ARCH_REQUIRE_GPIOLIB
118 Support for BCM63XX based boards
125 select DMA_NONCOHERENT
131 select PCI_GT64XXX_PCI0
133 select SYS_HAS_CPU_NEVADA
134 select SYS_HAS_EARLY_PRINTK
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_64BIT_KERNEL
137 select SYS_SUPPORTS_LITTLE_ENDIAN
139 config MACH_DECSTATION
146 select CPU_DADDI_WORKAROUNDS if 64BIT
147 select CPU_R4000_WORKAROUNDS if 64BIT
148 select CPU_R4400_WORKAROUNDS if 64BIT
149 select DMA_NONCOHERENT
152 select SYS_HAS_CPU_R3000
153 select SYS_HAS_CPU_R4X00
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_128HZ
158 select SYS_SUPPORTS_256HZ
159 select SYS_SUPPORTS_1024HZ
161 This enables support for DEC's MIPS based workstations. For details
162 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
163 DECstation porting pages on <http://decstation.unix-ag.org/>.
165 If you have one of the following DECstation Models you definitely
166 want to choose R4xx0 for the CPU Type:
173 otherwise choose R3000.
176 bool "Jazz family of machines"
179 select ARCH_MAY_HAVE_PC_FDC
182 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
183 select GENERIC_ISA_DMA
184 select HAVE_PCSPKR_PLATFORM
189 select SYS_HAS_CPU_R4X00
190 select SYS_SUPPORTS_32BIT_KERNEL
191 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
192 select SYS_SUPPORTS_100HZ
194 This a family of machines based on the MIPS R4030 chipset which was
195 used by several vendors to build RISC/os and Windows NT workstations.
196 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
197 Olivetti M700-10 workstations.
200 bool "Ingenic JZ4740 based machines"
201 select SYS_HAS_CPU_MIPS32_R1
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_SUPPORTS_LITTLE_ENDIAN
204 select DMA_NONCOHERENT
207 select ARCH_REQUIRE_GPIOLIB
208 select SYS_HAS_EARLY_PRINTK
211 select GENERIC_IRQ_CHIP
214 bool "Lantiq based platforms"
215 select DMA_NONCOHERENT
219 select SYS_HAS_CPU_MIPS32_R1
220 select SYS_HAS_CPU_MIPS32_R2
221 select SYS_SUPPORTS_BIG_ENDIAN
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_MULTITHREADING
224 select SYS_HAS_EARLY_PRINTK
225 select ARCH_REQUIRE_GPIOLIB
232 bool "LASAT Networks platforms"
235 select DMA_NONCOHERENT
236 select SYS_HAS_EARLY_PRINTK
239 select PCI_GT64XXX_PCI0
241 select R5000_CPU_SCACHE
242 select SYS_HAS_CPU_R5000
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
245 select SYS_SUPPORTS_LITTLE_ENDIAN
248 bool "Loongson family of machines"
249 select SYS_SUPPORTS_ZBOOT
251 This enables the support of Loongson family of machines.
253 Loongson is a family of general-purpose MIPS-compatible CPUs.
254 developed at Institute of Computing Technology (ICT),
255 Chinese Academy of Sciences (CAS) in the People's Republic
256 of China. The chief architect is Professor Weiwu Hu.
259 bool "MIPS Malta board"
260 select ARCH_MAY_HAVE_PC_FDC
265 select DMA_NONCOHERENT
266 select GENERIC_ISA_DMA
267 select HAVE_PCSPKR_PLATFORM
273 select MIPS_BOARDS_GEN
275 select MIPS_CPU_SCACHE
276 select PCI_GT64XXX_PCI0
279 select SYS_HAS_CPU_MIPS32_R1
280 select SYS_HAS_CPU_MIPS32_R2
281 select SYS_HAS_CPU_MIPS64_R1
282 select SYS_HAS_CPU_NEVADA
283 select SYS_HAS_CPU_RM7000
284 select SYS_HAS_EARLY_PRINTK
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_64BIT_KERNEL
287 select SYS_SUPPORTS_BIG_ENDIAN
288 select SYS_SUPPORTS_LITTLE_ENDIAN
289 select SYS_SUPPORTS_MIPS_CMP
290 select SYS_SUPPORTS_MULTITHREADING
291 select SYS_SUPPORTS_SMARTMIPS
292 select SYS_SUPPORTS_ZBOOT
294 This enables support for the MIPS Technologies Malta evaluation
298 bool 'MIPS simulator (MIPSsim)'
301 select DMA_NONCOHERENT
302 select SYS_HAS_EARLY_PRINTK
305 select SYS_HAS_CPU_MIPS32_R1
306 select SYS_HAS_CPU_MIPS32_R2
307 select SYS_HAS_EARLY_PRINTK
308 select SYS_SUPPORTS_32BIT_KERNEL
309 select SYS_SUPPORTS_BIG_ENDIAN
310 select SYS_SUPPORTS_MULTITHREADING
311 select SYS_SUPPORTS_LITTLE_ENDIAN
313 This option enables support for MIPS Technologies MIPSsim software
317 bool "NEC EMMA2RH Mark-eins board"
321 This enables support for the NEC Electronics Mark-eins boards.
324 bool "NEC VR4100 series based machines"
327 select SYS_HAS_CPU_VR41XX
328 select ARCH_REQUIRE_GPIOLIB
331 bool "NXP STB220 board"
334 Support for NXP Semiconductors STB220 Development Board.
341 Support for NXP Semiconductors STB225 Development Board.
344 bool "NXP PNX8550 based JBS board"
346 select SYS_SUPPORTS_LITTLE_ENDIAN
348 config PNX8550_STB810
349 bool "NXP PNX8550 based STB810 board"
351 select SYS_SUPPORTS_LITTLE_ENDIAN
354 bool "PMC-Sierra MSP chipsets"
355 depends on EXPERIMENTAL
358 select DMA_NONCOHERENT
360 select NO_EXCEPT_FILL
362 select SYS_HAS_CPU_MIPS32_R1
363 select SYS_HAS_CPU_MIPS32_R2
364 select SYS_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
368 select SERIAL_8250_CONSOLE
370 This adds support for the PMC-Sierra family of Multi-Service
371 Processor System-On-A-Chips. These parts include a number
372 of integrated peripherals, interfaces and DSPs in addition to
373 a variety of MIPS cores.
376 bool "PMC-Sierra Yosemite eval board"
385 select SYS_HAS_CPU_RM9000
386 select SYS_HAS_EARLY_PRINTK
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_64BIT_KERNEL
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_HIGHMEM
391 select SYS_SUPPORTS_SMP
393 Yosemite is an evaluation board for the RM9000x2 processor
394 manufactured by PMC-Sierra.
400 select CPU_MIPSR2_IRQ_VI
401 select CPU_MIPSR2_IRQ_EI
403 select DMA_NONCOHERENT
405 select SYS_HAS_EARLY_PRINTK
406 select SYS_HAS_CPU_MIPS32_R2
407 select SYS_SUPPORTS_32BIT_KERNEL
408 select SYS_SUPPORTS_BIG_ENDIAN
409 select SYS_SUPPORTS_HIGHMEM
410 select USB_OHCI_LITTLE_ENDIAN
412 This enables support for the Cisco PowerTV Platform.
415 bool "SGI IP22 (Indy/Indigo2)"
421 select DEFAULT_SGI_PARTITION
422 select DMA_NONCOHERENT
426 select IP22_CPU_SCACHE
428 select GENERIC_ISA_DMA_SUPPORT_BROKEN
430 select SGI_HAS_INDYDOG
436 select SYS_HAS_CPU_R4X00
437 select SYS_HAS_CPU_R5000
439 # Disable EARLY_PRINTK for now since it leads to overwritten prom
440 # memory during early boot on some machines.
442 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
443 # for a more details discussion
445 # select SYS_HAS_EARLY_PRINTK
446 select SYS_SUPPORTS_32BIT_KERNEL
447 select SYS_SUPPORTS_64BIT_KERNEL
448 select SYS_SUPPORTS_BIG_ENDIAN
450 This are the SGI Indy, Challenge S and Indigo2, as well as certain
451 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
452 that runs on these, say Y here.
455 bool "SGI IP27 (Origin200/2000)"
459 select DEFAULT_SGI_PARTITION
461 select SYS_HAS_EARLY_PRINTK
463 select NR_CPUS_DEFAULT_64
464 select SYS_HAS_CPU_R10000
465 select SYS_SUPPORTS_64BIT_KERNEL
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_NUMA
468 select SYS_SUPPORTS_SMP
470 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
471 workstations. To compile a Linux kernel that runs on these, say Y
475 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
476 depends on EXPERIMENTAL
482 select DEFAULT_SGI_PARTITION
483 select DMA_NONCOHERENT
484 select GENERIC_ISA_DMA_SUPPORT_BROKEN
490 select SGI_HAS_INDYDOG
496 select SYS_HAS_CPU_R10000
498 # Disable EARLY_PRINTK for now since it leads to overwritten prom
499 # memory during early boot on some machines.
501 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
502 # for a more details discussion
504 # select SYS_HAS_EARLY_PRINTK
505 select SYS_SUPPORTS_64BIT_KERNEL
506 select SYS_SUPPORTS_BIG_ENDIAN
508 This is the SGI Indigo2 with R10000 processor. To compile a Linux
509 kernel that runs on these, say Y here.
518 select DMA_NONCOHERENT
521 select R5000_CPU_SCACHE
522 select RM7000_CPU_SCACHE
523 select SYS_HAS_CPU_R5000
524 select SYS_HAS_CPU_R10000 if BROKEN
525 select SYS_HAS_CPU_RM7000
526 select SYS_HAS_CPU_NEVADA
527 select SYS_SUPPORTS_64BIT_KERNEL
528 select SYS_SUPPORTS_BIG_ENDIAN
530 If you want this kernel to run on SGI O2 workstation, say Y here.
533 bool "Sibyte BCM91120C-CRhine"
534 depends on EXPERIMENTAL
537 select SIBYTE_BCM1120
539 select SYS_HAS_CPU_SB1
540 select SYS_SUPPORTS_BIG_ENDIAN
541 select SYS_SUPPORTS_LITTLE_ENDIAN
544 bool "Sibyte BCM91120x-Carmel"
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 BCM91125C-CRhone"
556 depends on EXPERIMENTAL
559 select SIBYTE_BCM1125
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_HIGHMEM
564 select SYS_SUPPORTS_LITTLE_ENDIAN
567 bool "Sibyte BCM91125E-Rhone"
568 depends on EXPERIMENTAL
571 select SIBYTE_BCM1125H
573 select SYS_HAS_CPU_SB1
574 select SYS_SUPPORTS_BIG_ENDIAN
575 select SYS_SUPPORTS_LITTLE_ENDIAN
578 bool "Sibyte BCM91250A-SWARM"
581 select HAVE_PATA_PLATFORM
582 select NR_CPUS_DEFAULT_2
585 select SYS_HAS_CPU_SB1
586 select SYS_SUPPORTS_BIG_ENDIAN
587 select SYS_SUPPORTS_HIGHMEM
588 select SYS_SUPPORTS_LITTLE_ENDIAN
589 select ZONE_DMA32 if 64BIT
591 config SIBYTE_LITTLESUR
592 bool "Sibyte BCM91250C2-LittleSur"
593 depends on EXPERIMENTAL
596 select HAVE_PATA_PLATFORM
597 select NR_CPUS_DEFAULT_2
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_HIGHMEM
603 select SYS_SUPPORTS_LITTLE_ENDIAN
605 config SIBYTE_SENTOSA
606 bool "Sibyte BCM91250E-Sentosa"
607 depends on EXPERIMENTAL
610 select NR_CPUS_DEFAULT_2
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_LITTLE_ENDIAN
618 bool "Sibyte BCM91480B-BigSur"
621 select NR_CPUS_DEFAULT_4
622 select SIBYTE_BCM1x80
624 select SYS_HAS_CPU_SB1
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select SYS_SUPPORTS_HIGHMEM
627 select SYS_SUPPORTS_LITTLE_ENDIAN
628 select ZONE_DMA32 if 64BIT
631 bool "SNI RM200/300/400"
632 select ARC if CPU_LITTLE_ENDIAN
633 select ARC32 if CPU_LITTLE_ENDIAN
634 select SNIPROM if CPU_BIG_ENDIAN
635 select ARCH_MAY_HAVE_PC_FDC
639 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
640 select DMA_NONCOHERENT
641 select GENERIC_ISA_DMA
642 select HAVE_PCSPKR_PLATFORM
649 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
650 select SYS_HAS_CPU_R4X00
651 select SYS_HAS_CPU_R5000
652 select SYS_HAS_CPU_R10000
653 select R5000_CPU_SCACHE
654 select SYS_HAS_EARLY_PRINTK
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select SYS_SUPPORTS_HIGHMEM
659 select SYS_SUPPORTS_LITTLE_ENDIAN
661 The SNI RM200/300/400 are MIPS-based machines manufactured by
662 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
663 Technology and now in turn merged with Fujitsu. Say Y here to
664 support this machine type.
667 bool "Toshiba TX39 series based machines"
670 bool "Toshiba TX49 series based machines"
672 config MIKROTIK_RB532
673 bool "Mikrotik RB532 boards"
676 select DMA_NONCOHERENT
679 select SYS_HAS_CPU_MIPS32_R1
680 select SYS_SUPPORTS_32BIT_KERNEL
681 select SYS_SUPPORTS_LITTLE_ENDIAN
684 select ARCH_REQUIRE_GPIOLIB
686 Support the Mikrotik(tm) RouterBoard 532 series,
687 based on the IDT RC32434 SoC.
690 bool "Wind River PPMC board"
695 select DMA_NONCOHERENT
697 select PCI_GT64XXX_PCI0
699 select SYS_HAS_CPU_MIPS32_R1
700 select SYS_HAS_CPU_MIPS32_R2
701 select SYS_HAS_CPU_MIPS64_R1
702 select SYS_HAS_CPU_NEVADA
703 select SYS_HAS_CPU_RM7000
704 select SYS_SUPPORTS_32BIT_KERNEL
705 select SYS_SUPPORTS_64BIT_KERNEL
706 select SYS_SUPPORTS_BIG_ENDIAN
707 select SYS_SUPPORTS_LITTLE_ENDIAN
709 This enables support for the Wind River MIPS32 4KC PPMC evaluation
710 board, which is based on GT64120 bridge chip.
712 config CAVIUM_OCTEON_SIMULATOR
713 bool "Cavium Networks Octeon Simulator"
715 select 64BIT_PHYS_ADDR
717 select SYS_SUPPORTS_64BIT_KERNEL
718 select SYS_SUPPORTS_BIG_ENDIAN
719 select SYS_SUPPORTS_HIGHMEM
720 select SYS_SUPPORTS_HOTPLUG_CPU
721 select SYS_HAS_CPU_CAVIUM_OCTEON
724 The Octeon simulator is software performance model of the Cavium
725 Octeon Processor. It supports simulating Octeon processors on x86
728 config CAVIUM_OCTEON_REFERENCE_BOARD
729 bool "Cavium Networks Octeon reference board"
731 select 64BIT_PHYS_ADDR
733 select SYS_SUPPORTS_64BIT_KERNEL
734 select SYS_SUPPORTS_BIG_ENDIAN
735 select SYS_SUPPORTS_HIGHMEM
736 select SYS_SUPPORTS_HOTPLUG_CPU
737 select SYS_HAS_EARLY_PRINTK
738 select SYS_HAS_CPU_CAVIUM_OCTEON
741 select ARCH_SUPPORTS_MSI
743 select USB_ARCH_HAS_OHCI
744 select USB_ARCH_HAS_EHCI
747 This option supports all of the Octeon reference boards from Cavium
748 Networks. It builds a kernel that dynamically determines the Octeon
749 CPU type and supports all known board reference implementations.
750 Some of the supported boards are:
757 Say Y here for most Octeon reference boards.
760 bool "Netlogic XLR/XLS based systems"
761 depends on EXPERIMENTAL
764 select SYS_HAS_CPU_XLR
765 select SYS_SUPPORTS_SMP
768 select SYS_SUPPORTS_32BIT_KERNEL
769 select SYS_SUPPORTS_64BIT_KERNEL
770 select 64BIT_PHYS_ADDR
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
774 select NR_CPUS_DEFAULT_32
778 select ARCH_SUPPORTS_MSI
779 select ZONE_DMA if 64BIT
781 select SYS_HAS_EARLY_PRINTK
783 Support for systems based on Netlogic XLR and XLS processors.
784 Say Y here if you have a XLR or XLS based board.
787 bool "Netlogic XLP based systems"
788 depends on EXPERIMENTAL
791 select SYS_HAS_CPU_XLP
792 select SYS_SUPPORTS_SMP
795 select SYS_SUPPORTS_32BIT_KERNEL
796 select SYS_SUPPORTS_64BIT_KERNEL
797 select 64BIT_PHYS_ADDR
798 select SYS_SUPPORTS_BIG_ENDIAN
799 select SYS_SUPPORTS_LITTLE_ENDIAN
800 select SYS_SUPPORTS_HIGHMEM
802 select NR_CPUS_DEFAULT_32
806 select ZONE_DMA if 64BIT
808 select SYS_HAS_EARLY_PRINTK
810 This board is based on Netlogic XLP Processor.
811 Say Y here if you have a XLP based board.
815 source "arch/mips/alchemy/Kconfig"
816 source "arch/mips/ath79/Kconfig"
817 source "arch/mips/bcm47xx/Kconfig"
818 source "arch/mips/bcm63xx/Kconfig"
819 source "arch/mips/jazz/Kconfig"
820 source "arch/mips/jz4740/Kconfig"
821 source "arch/mips/lantiq/Kconfig"
822 source "arch/mips/lasat/Kconfig"
823 source "arch/mips/pmc-sierra/Kconfig"
824 source "arch/mips/powertv/Kconfig"
825 source "arch/mips/sgi-ip27/Kconfig"
826 source "arch/mips/sibyte/Kconfig"
827 source "arch/mips/txx9/Kconfig"
828 source "arch/mips/vr41xx/Kconfig"
829 source "arch/mips/cavium-octeon/Kconfig"
830 source "arch/mips/loongson/Kconfig"
831 source "arch/mips/netlogic/Kconfig"
835 config RWSEM_GENERIC_SPINLOCK
839 config RWSEM_XCHGADD_ALGORITHM
842 config ARCH_HAS_ILOG2_U32
846 config ARCH_HAS_ILOG2_U64
850 config GENERIC_HWEIGHT
854 config GENERIC_CALIBRATE_DELAY
858 config GENERIC_CLOCKEVENTS
862 config GENERIC_CMOS_UPDATE
866 config SCHED_OMIT_FRAME_POINTER
871 # Select some configuration options automatically based on user selections.
876 config ARCH_MAY_HAVE_PC_FDC
925 select ARCH_REQUIRE_GPIOLIB
931 config ARCH_DMA_ADDR_T_64BIT
932 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
937 config DMA_NONCOHERENT
939 select NEED_DMA_MAP_STATE
941 config NEED_DMA_MAP_STATE
944 config SYS_HAS_EARLY_PRINTK
948 bool "Support for hot-pluggable CPUs"
949 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
951 Say Y here to allow turning CPUs off and on. CPUs can be
952 controlled through /sys/devices/system/cpu.
953 (Note: power management support will enable this option
954 automatically on SMP systems. )
955 Say N if you want to disable CPU hotplug.
957 config SYS_SUPPORTS_HOTPLUG_CPU
972 config MIPS_DISABLE_OBSOLETE_IDE
984 config GENERIC_ISA_DMA
986 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
989 config GENERIC_ISA_DMA_SUPPORT_BROKEN
991 select GENERIC_ISA_DMA
1003 # Endianess selection. Sufficiently obscure so many users don't know what to
1004 # answer,so we try hard to limit the available choices. Also the use of a
1005 # choice statement should be more obvious to the user.
1008 prompt "Endianess selection"
1010 Some MIPS machines can be configured for either little or big endian
1011 byte order. These modes require different kernels and a different
1012 Linux distribution. In general there is one preferred byteorder for a
1013 particular system but some systems are just as commonly used in the
1014 one or the other endianness.
1016 config CPU_BIG_ENDIAN
1018 depends on SYS_SUPPORTS_BIG_ENDIAN
1020 config CPU_LITTLE_ENDIAN
1021 bool "Little endian"
1022 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1030 config SYS_SUPPORTS_APM_EMULATION
1033 config SYS_SUPPORTS_BIG_ENDIAN
1036 config SYS_SUPPORTS_LITTLE_ENDIAN
1039 config SYS_SUPPORTS_HUGETLBFS
1041 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1068 config MIPS_BOARDS_GEN
1071 config PCI_GT64XXX_PCI0
1074 config NO_EXCEPT_FILL
1079 select SERIAL_RM9000
1085 select DMA_NONCOHERENT
1087 select SWAP_IO_SPACE
1088 select SYS_HAS_CPU_R5500
1089 select SYS_SUPPORTS_32BIT_KERNEL
1090 select SYS_SUPPORTS_64BIT_KERNEL
1091 select SYS_SUPPORTS_BIG_ENDIAN
1098 select DMA_NONCOHERENT
1099 select SYS_HAS_CPU_MIPS32_R2
1100 select SYS_SUPPORTS_32BIT_KERNEL
1101 select SYS_SUPPORTS_LITTLE_ENDIAN
1102 select SYS_SUPPORTS_BIG_ENDIAN
1104 select CPU_MIPSR2_IRQ_VI
1116 select DMA_NONCOHERENT
1118 select SYS_HAS_CPU_MIPS32_R1
1119 select SYS_HAS_EARLY_PRINTK
1120 select SYS_SUPPORTS_32BIT_KERNEL
1123 config SWAP_IO_SPACE
1126 config SERIAL_RM9000
1129 config SGI_HAS_INDYDOG
1141 config SGI_HAS_ZILOG
1144 config SGI_HAS_I8042
1147 config DEFAULT_SGI_PARTITION
1159 config MIPS_L1_CACHE_SHIFT
1161 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1162 default "6" if MIPS_CPU_SCACHE
1163 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1166 config HAVE_STD_PC_SERIAL_PORT
1170 bool "ARC console support"
1171 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1175 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1180 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1189 menu "CPU selection"
1195 config CPU_LOONGSON2E
1197 depends on SYS_HAS_CPU_LOONGSON2E
1198 select CPU_LOONGSON2
1200 The Loongson 2E processor implements the MIPS III instruction set
1201 with many extensions.
1203 It has an internal FPGA northbridge, which is compatible to
1206 config CPU_LOONGSON2F
1208 depends on SYS_HAS_CPU_LOONGSON2F
1209 select CPU_LOONGSON2
1211 select ARCH_REQUIRE_GPIOLIB
1213 The Loongson 2F processor implements the MIPS III instruction set
1214 with many extensions.
1216 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1217 have a similar programming interface with FPGA northbridge used in
1220 config CPU_MIPS32_R1
1221 bool "MIPS32 Release 1"
1222 depends on SYS_HAS_CPU_MIPS32_R1
1223 select CPU_HAS_PREFETCH
1224 select CPU_SUPPORTS_32BIT_KERNEL
1225 select CPU_SUPPORTS_HIGHMEM
1227 Choose this option to build a kernel for release 1 or later of the
1228 MIPS32 architecture. Most modern embedded systems with a 32-bit
1229 MIPS processor are based on a MIPS32 processor. If you know the
1230 specific type of processor in your system, choose those that one
1231 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1232 Release 2 of the MIPS32 architecture is available since several
1233 years so chances are you even have a MIPS32 Release 2 processor
1234 in which case you should choose CPU_MIPS32_R2 instead for better
1237 config CPU_MIPS32_R2
1238 bool "MIPS32 Release 2"
1239 depends on SYS_HAS_CPU_MIPS32_R2
1240 select CPU_HAS_PREFETCH
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_HIGHMEM
1244 Choose this option to build a kernel for release 2 or later of the
1245 MIPS32 architecture. Most modern embedded systems with a 32-bit
1246 MIPS processor are based on a MIPS32 processor. If you know the
1247 specific type of processor in your system, choose those that one
1248 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1250 config CPU_MIPS64_R1
1251 bool "MIPS64 Release 1"
1252 depends on SYS_HAS_CPU_MIPS64_R1
1253 select CPU_HAS_PREFETCH
1254 select CPU_SUPPORTS_32BIT_KERNEL
1255 select CPU_SUPPORTS_64BIT_KERNEL
1256 select CPU_SUPPORTS_HIGHMEM
1257 select CPU_SUPPORTS_HUGEPAGES
1259 Choose this option to build a kernel for release 1 or later of the
1260 MIPS64 architecture. Many modern embedded systems with a 64-bit
1261 MIPS processor are based on a MIPS64 processor. If you know the
1262 specific type of processor in your system, choose those that one
1263 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1264 Release 2 of the MIPS64 architecture is available since several
1265 years so chances are you even have a MIPS64 Release 2 processor
1266 in which case you should choose CPU_MIPS64_R2 instead for better
1269 config CPU_MIPS64_R2
1270 bool "MIPS64 Release 2"
1271 depends on SYS_HAS_CPU_MIPS64_R2
1272 select CPU_HAS_PREFETCH
1273 select CPU_SUPPORTS_32BIT_KERNEL
1274 select CPU_SUPPORTS_64BIT_KERNEL
1275 select CPU_SUPPORTS_HIGHMEM
1276 select CPU_SUPPORTS_HUGEPAGES
1278 Choose this option to build a kernel for release 2 or later of the
1279 MIPS64 architecture. Many modern embedded systems with a 64-bit
1280 MIPS processor are based on a MIPS64 processor. If you know the
1281 specific type of processor in your system, choose those that one
1282 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1286 depends on SYS_HAS_CPU_R3000
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1291 Please make sure to pick the right CPU type. Linux/MIPS is not
1292 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1293 *not* work on R4000 machines and vice versa. However, since most
1294 of the supported machines have an R4000 (or similar) CPU, R4x00
1295 might be a safe bet. If the resulting kernel does not work,
1296 try to recompile with R3000.
1300 depends on SYS_HAS_CPU_TX39XX
1301 select CPU_SUPPORTS_32BIT_KERNEL
1305 depends on SYS_HAS_CPU_VR41XX
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1309 The options selects support for the NEC VR4100 series of processors.
1310 Only choose this option if you have one of these processors as a
1311 kernel built with this option will not run on any other type of
1312 processor or vice versa.
1316 depends on SYS_HAS_CPU_R4300
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1320 MIPS Technologies R4300-series processors.
1324 depends on SYS_HAS_CPU_R4X00
1325 select CPU_SUPPORTS_32BIT_KERNEL
1326 select CPU_SUPPORTS_64BIT_KERNEL
1328 MIPS Technologies R4000-series processors other than 4300, including
1329 the R4000, R4400, R4600, and 4700.
1333 depends on SYS_HAS_CPU_TX49XX
1334 select CPU_HAS_PREFETCH
1335 select CPU_SUPPORTS_32BIT_KERNEL
1336 select CPU_SUPPORTS_64BIT_KERNEL
1340 depends on SYS_HAS_CPU_R5000
1341 select CPU_SUPPORTS_32BIT_KERNEL
1342 select CPU_SUPPORTS_64BIT_KERNEL
1344 MIPS Technologies R5000-series processors other than the Nevada.
1348 depends on SYS_HAS_CPU_R5432
1349 select CPU_SUPPORTS_32BIT_KERNEL
1350 select CPU_SUPPORTS_64BIT_KERNEL
1354 depends on SYS_HAS_CPU_R5500
1355 select CPU_SUPPORTS_32BIT_KERNEL
1356 select CPU_SUPPORTS_64BIT_KERNEL
1357 select CPU_SUPPORTS_HUGEPAGES
1359 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1364 depends on EXPERIMENTAL
1365 depends on SYS_HAS_CPU_R6000
1366 select CPU_SUPPORTS_32BIT_KERNEL
1368 MIPS Technologies R6000 and R6000A series processors. Note these
1369 processors are extremely rare and the support for them is incomplete.
1373 depends on SYS_HAS_CPU_NEVADA
1374 select CPU_SUPPORTS_32BIT_KERNEL
1375 select CPU_SUPPORTS_64BIT_KERNEL
1377 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1381 depends on EXPERIMENTAL
1382 depends on SYS_HAS_CPU_R8000
1383 select CPU_HAS_PREFETCH
1384 select CPU_SUPPORTS_64BIT_KERNEL
1386 MIPS Technologies R8000 processors. Note these processors are
1387 uncommon and the support for them is incomplete.
1391 depends on SYS_HAS_CPU_R10000
1392 select CPU_HAS_PREFETCH
1393 select CPU_SUPPORTS_32BIT_KERNEL
1394 select CPU_SUPPORTS_64BIT_KERNEL
1395 select CPU_SUPPORTS_HIGHMEM
1397 MIPS Technologies R10000-series processors.
1401 depends on SYS_HAS_CPU_RM7000
1402 select CPU_HAS_PREFETCH
1403 select CPU_SUPPORTS_32BIT_KERNEL
1404 select CPU_SUPPORTS_64BIT_KERNEL
1405 select CPU_SUPPORTS_HIGHMEM
1409 depends on SYS_HAS_CPU_RM9000
1410 select CPU_HAS_PREFETCH
1411 select CPU_SUPPORTS_32BIT_KERNEL
1412 select CPU_SUPPORTS_64BIT_KERNEL
1413 select CPU_SUPPORTS_HIGHMEM
1414 select WEAK_ORDERING
1418 depends on SYS_HAS_CPU_SB1
1419 select CPU_SUPPORTS_32BIT_KERNEL
1420 select CPU_SUPPORTS_64BIT_KERNEL
1421 select CPU_SUPPORTS_HIGHMEM
1422 select WEAK_ORDERING
1424 config CPU_CAVIUM_OCTEON
1425 bool "Cavium Octeon processor"
1426 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1427 select CPU_HAS_PREFETCH
1428 select CPU_SUPPORTS_64BIT_KERNEL
1429 select SYS_SUPPORTS_SMP
1430 select NR_CPUS_DEFAULT_16
1431 select WEAK_ORDERING
1432 select CPU_SUPPORTS_HIGHMEM
1433 select CPU_SUPPORTS_HUGEPAGES
1435 The Cavium Octeon processor is a highly integrated chip containing
1436 many ethernet hardware widgets for networking tasks. The processor
1437 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1438 Full details can be found at http://www.caviumnetworks.com.
1440 config CPU_BMIPS3300
1442 depends on SYS_HAS_CPU_BMIPS3300
1443 select DMA_NONCOHERENT
1445 select SWAP_IO_SPACE
1446 select SYS_SUPPORTS_32BIT_KERNEL
1447 select WEAK_ORDERING
1449 Broadcom BMIPS3300 processors.
1451 config CPU_BMIPS4350
1453 depends on SYS_HAS_CPU_BMIPS4350
1454 select CPU_SUPPORTS_32BIT_KERNEL
1455 select DMA_NONCOHERENT
1457 select SWAP_IO_SPACE
1458 select SYS_SUPPORTS_SMP
1459 select SYS_SUPPORTS_HOTPLUG_CPU
1460 select WEAK_ORDERING
1462 Broadcom BMIPS4350 ("VIPER") processors.
1464 config CPU_BMIPS4380
1466 depends on SYS_HAS_CPU_BMIPS4380
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select DMA_NONCOHERENT
1470 select SWAP_IO_SPACE
1471 select SYS_SUPPORTS_SMP
1472 select SYS_SUPPORTS_HOTPLUG_CPU
1473 select WEAK_ORDERING
1475 Broadcom BMIPS4380 processors.
1477 config CPU_BMIPS5000
1479 depends on SYS_HAS_CPU_BMIPS5000
1480 select CPU_SUPPORTS_32BIT_KERNEL
1481 select CPU_SUPPORTS_HIGHMEM
1482 select DMA_NONCOHERENT
1484 select SWAP_IO_SPACE
1485 select SYS_SUPPORTS_SMP
1486 select SYS_SUPPORTS_HOTPLUG_CPU
1487 select WEAK_ORDERING
1489 Broadcom BMIPS5000 processors.
1492 bool "Netlogic XLR SoC"
1493 depends on SYS_HAS_CPU_XLR
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1497 select WEAK_ORDERING
1498 select WEAK_REORDERING_BEYOND_LLSC
1499 select CPU_SUPPORTS_HUGEPAGES
1501 Netlogic Microsystems XLR/XLS processors.
1504 bool "Netlogic XLP SoC"
1505 depends on SYS_HAS_CPU_XLP
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1510 select WEAK_ORDERING
1511 select WEAK_REORDERING_BEYOND_LLSC
1512 select CPU_HAS_PREFETCH
1514 Netlogic Microsystems XLP processors.
1518 config CPU_NOP_WORKAROUNDS
1521 config CPU_JUMP_WORKAROUNDS
1524 config CPU_LOONGSON2F_WORKAROUNDS
1525 bool "Loongson 2F Workarounds"
1527 select CPU_NOP_WORKAROUNDS
1528 select CPU_JUMP_WORKAROUNDS
1530 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1531 require workarounds. Without workarounds the system may hang
1532 unexpectedly. For more information please refer to the gas
1533 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1535 Loongson 2F03 and later have fixed these issues and no workarounds
1536 are needed. The workarounds have no significant side effect on them
1537 but may decrease the performance of the system so this option should
1538 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1541 If unsure, please say Y.
1542 endif # CPU_LOONGSON2F
1544 config SYS_SUPPORTS_ZBOOT
1546 select HAVE_KERNEL_GZIP
1547 select HAVE_KERNEL_BZIP2
1548 select HAVE_KERNEL_LZMA
1549 select HAVE_KERNEL_LZO
1551 config SYS_SUPPORTS_ZBOOT_UART16550
1553 select SYS_SUPPORTS_ZBOOT
1555 config CPU_LOONGSON2
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HIGHMEM
1561 config SYS_HAS_CPU_LOONGSON2E
1564 config SYS_HAS_CPU_LOONGSON2F
1566 select CPU_SUPPORTS_CPUFREQ
1567 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1568 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1570 config SYS_HAS_CPU_MIPS32_R1
1573 config SYS_HAS_CPU_MIPS32_R2
1576 config SYS_HAS_CPU_MIPS64_R1
1579 config SYS_HAS_CPU_MIPS64_R2
1582 config SYS_HAS_CPU_R3000
1585 config SYS_HAS_CPU_TX39XX
1588 config SYS_HAS_CPU_VR41XX
1591 config SYS_HAS_CPU_R4300
1594 config SYS_HAS_CPU_R4X00
1597 config SYS_HAS_CPU_TX49XX
1600 config SYS_HAS_CPU_R5000
1603 config SYS_HAS_CPU_R5432
1606 config SYS_HAS_CPU_R5500
1609 config SYS_HAS_CPU_R6000
1612 config SYS_HAS_CPU_NEVADA
1615 config SYS_HAS_CPU_R8000
1618 config SYS_HAS_CPU_R10000
1621 config SYS_HAS_CPU_RM7000
1624 config SYS_HAS_CPU_RM9000
1627 config SYS_HAS_CPU_SB1
1630 config SYS_HAS_CPU_CAVIUM_OCTEON
1633 config SYS_HAS_CPU_BMIPS3300
1636 config SYS_HAS_CPU_BMIPS4350
1639 config SYS_HAS_CPU_BMIPS4380
1642 config SYS_HAS_CPU_BMIPS5000
1645 config SYS_HAS_CPU_XLR
1648 config SYS_HAS_CPU_XLP
1652 # CPU may reorder R->R, R->W, W->R, W->W
1653 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1655 config WEAK_ORDERING
1659 # CPU may reorder reads and writes beyond LL/SC
1660 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1662 config WEAK_REORDERING_BEYOND_LLSC
1667 # These two indicate any level of the MIPS32 and MIPS64 architecture
1671 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1675 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1678 # These two indicate the revision of the architecture, either Release 1 or Release 2
1682 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1686 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1688 config SYS_SUPPORTS_32BIT_KERNEL
1690 config SYS_SUPPORTS_64BIT_KERNEL
1692 config CPU_SUPPORTS_32BIT_KERNEL
1694 config CPU_SUPPORTS_64BIT_KERNEL
1696 config CPU_SUPPORTS_CPUFREQ
1698 config CPU_SUPPORTS_ADDRWINCFG
1700 config CPU_SUPPORTS_HUGEPAGES
1702 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1704 config MIPS_PGD_C0_CONTEXT
1706 default y if 64BIT && CPU_MIPSR2
1709 # Set to y for ptrace access to watch registers.
1711 config HARDWARE_WATCHPOINTS
1713 default y if CPU_MIPSR1 || CPU_MIPSR2
1719 prompt "Kernel code model"
1721 You should only select this option if you have a workload that
1722 actually benefits from 64-bit processing or if your machine has
1723 large memory. You will only be presented a single option in this
1724 menu if your system does not support both 32-bit and 64-bit kernels.
1727 bool "32-bit kernel"
1728 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1731 Select this option if you want to build a 32-bit kernel.
1733 bool "64-bit kernel"
1734 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1735 select HAVE_SYSCALL_WRAPPERS
1737 Select this option if you want to build a 64-bit kernel.
1742 prompt "Kernel page size"
1743 default PAGE_SIZE_4KB
1745 config PAGE_SIZE_4KB
1747 depends on !CPU_LOONGSON2
1749 This option select the standard 4kB Linux page size. On some
1750 R3000-family processors this is the only available page size. Using
1751 4kB page size will minimize memory consumption and is therefore
1752 recommended for low memory systems.
1754 config PAGE_SIZE_8KB
1756 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1758 Using 8kB page size will result in higher performance kernel at
1759 the price of higher memory consumption. This option is available
1760 only on R8000 and cnMIPS processors. Note that you will need a
1761 suitable Linux distribution to support this.
1763 config PAGE_SIZE_16KB
1765 depends on !CPU_R3000 && !CPU_TX39XX
1767 Using 16kB page size will result in higher performance kernel at
1768 the price of higher memory consumption. This option is available on
1769 all non-R3000 family processors. Note that you will need a suitable
1770 Linux distribution to support this.
1772 config PAGE_SIZE_32KB
1774 depends on CPU_CAVIUM_OCTEON
1776 Using 32kB page size will result in higher performance kernel at
1777 the price of higher memory consumption. This option is available
1778 only on cnMIPS cores. Note that you will need a suitable Linux
1779 distribution to support this.
1781 config PAGE_SIZE_64KB
1783 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1785 Using 64kB page size will result in higher performance kernel at
1786 the price of higher memory consumption. This option is available on
1787 all non-R3000 family processor. Not that at the time of this
1788 writing this option is still high experimental.
1792 config FORCE_MAX_ZONEORDER
1793 int "Maximum zone order"
1794 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1795 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1796 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1797 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1801 The kernel memory allocator divides physically contiguous memory
1802 blocks into "zones", where each zone is a power of two number of
1803 pages. This option selects the largest power of two that the kernel
1804 keeps in the memory allocator. If you need to allocate very large
1805 blocks of physically contiguous memory, then you may need to
1806 increase this value.
1808 This config option is actually maximum order plus one. For example,
1809 a value of 11 means that the largest free memory block is 2^10 pages.
1811 The page size is not necessarily 4KB. Keep this in mind
1812 when choosing a value for this option.
1817 config IP22_CPU_SCACHE
1822 # Support for a MIPS32 / MIPS64 style S-caches
1824 config MIPS_CPU_SCACHE
1828 config R5000_CPU_SCACHE
1832 config RM7000_CPU_SCACHE
1836 config SIBYTE_DMA_PAGEOPS
1837 bool "Use DMA to clear/copy pages"
1840 Instead of using the CPU to zero and copy pages, use a Data Mover
1841 channel. These DMA channels are otherwise unused by the standard
1842 SiByte Linux port. Seems to give a small performance benefit.
1844 config CPU_HAS_PREFETCH
1848 prompt "MIPS MT options"
1850 config MIPS_MT_DISABLED
1851 bool "Disable multithreading support."
1853 Use this option if your workload can't take advantage of
1854 MIPS hardware multithreading support. On systems that don't have
1855 the option of an MT-enabled processor this option will be the only
1856 option in this menu.
1859 bool "Use 1 TC on each available VPE for SMP"
1860 depends on SYS_SUPPORTS_MULTITHREADING
1861 select CPU_MIPSR2_IRQ_VI
1862 select CPU_MIPSR2_IRQ_EI
1864 select NR_CPUS_DEFAULT_2
1866 select SYS_SUPPORTS_SCHED_SMT if SMP
1867 select SYS_SUPPORTS_SMP
1870 This is a kernel model which is known a VSMP but lately has been
1871 marketesed into SMVP.
1872 Virtual SMP uses the processor's VPEs to implement virtual
1873 processors. In currently available configuration of the 34K processor
1874 this allows for a dual processor. Both processors will share the same
1875 primary caches; each will obtain the half of the TLB for it's own
1876 exclusive use. For a layman this model can be described as similar to
1877 what Intel calls Hyperthreading.
1879 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1882 bool "SMTC: Use all TCs on all VPEs for SMP"
1883 depends on CPU_MIPS32_R2
1884 #depends on CPU_MIPS64_R2 # once there is hardware ...
1885 depends on SYS_SUPPORTS_MULTITHREADING
1886 select CPU_MIPSR2_IRQ_VI
1887 select CPU_MIPSR2_IRQ_EI
1889 select NR_CPUS_DEFAULT_8
1891 select SYS_SUPPORTS_SMP
1894 This is a kernel model which is known a SMTC or lately has been
1895 marketesed into SMVP.
1896 is presenting the available TC's of the core as processors to Linux.
1897 On currently available 34K processors this means a Linux system will
1898 see up to 5 processors. The implementation of the SMTC kernel differs
1899 significantly from VSMP and cannot efficiently coexist in the same
1900 kernel binary so the choice between VSMP and SMTC is a compile time
1903 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1911 bool "SMT (multithreading) scheduler support"
1912 depends on SYS_SUPPORTS_SCHED_SMT
1915 SMT scheduler support improves the CPU scheduler's decision making
1916 when dealing with MIPS MT enabled cores at a cost of slightly
1917 increased overhead in some places. If unsure say N here.
1919 config SYS_SUPPORTS_SCHED_SMT
1923 config SYS_SUPPORTS_MULTITHREADING
1926 config MIPS_MT_FPAFF
1927 bool "Dynamic FPU affinity for FP-intensive threads"
1929 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1931 config MIPS_VPE_LOADER
1932 bool "VPE loader support."
1933 depends on SYS_SUPPORTS_MULTITHREADING
1934 select CPU_MIPSR2_IRQ_VI
1935 select CPU_MIPSR2_IRQ_EI
1938 Includes a loader for loading an elf relocatable object
1939 onto another VPE and running it.
1941 config MIPS_MT_SMTC_IM_BACKSTOP
1942 bool "Use per-TC register bits as backstop for inhibited IM bits"
1943 depends on MIPS_MT_SMTC
1946 To support multiple TC microthreads acting as "CPUs" within
1947 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1948 during interrupt handling. To support legacy drivers and interrupt
1949 controller management code, SMTC has a "backstop" to track and
1950 if necessary restore the interrupt mask. This has some performance
1951 impact on interrupt service overhead.
1953 config MIPS_MT_SMTC_IRQAFF
1954 bool "Support IRQ affinity API"
1955 depends on MIPS_MT_SMTC
1958 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1959 for SMTC Linux kernel. Requires platform support, of which
1960 an example can be found in the MIPS kernel i8259 and Malta
1961 platform code. Adds some overhead to interrupt dispatch, and
1962 should be used only if you know what you are doing.
1964 config MIPS_VPE_LOADER_TOM
1965 bool "Load VPE program into memory hidden from linux"
1966 depends on MIPS_VPE_LOADER
1969 The loader can use memory that is present but has been hidden from
1970 Linux using the kernel command line option "mem=xxMB". It's up to
1971 you to ensure the amount you put in the option and the space your
1972 program requires is less or equal to the amount physically present.
1974 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1975 config MIPS_VPE_APSP_API
1976 bool "Enable support for AP/SP API (RTLX)"
1977 depends on MIPS_VPE_LOADER
1980 config MIPS_APSP_KSPD
1982 depends on MIPS_VPE_APSP_API
1985 KSPD is a kernel daemon that accepts syscall requests from the SP
1986 side, actions them and returns the results. It also handles the
1987 "exit" syscall notifying other kernel modules the SP program is
1988 exiting. You probably want to say yes here.
1991 bool "MIPS CMP framework support"
1992 depends on SYS_SUPPORTS_MIPS_CMP
1994 select SYS_SUPPORTS_SMP
1995 select SYS_SUPPORTS_SCHED_SMT if SMP
1996 select WEAK_ORDERING
1999 This is a placeholder option for the GCMP work. It will need to
2000 be handled differently...
2002 config SB1_PASS_1_WORKAROUNDS
2004 depends on CPU_SB1_PASS_1
2007 config SB1_PASS_2_WORKAROUNDS
2009 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2012 config SB1_PASS_2_1_WORKAROUNDS
2014 depends on CPU_SB1 && CPU_SB1_PASS_2
2017 config 64BIT_PHYS_ADDR
2020 config ARCH_PHYS_ADDR_T_64BIT
2021 def_bool 64BIT_PHYS_ADDR
2023 config CPU_HAS_SMARTMIPS
2024 depends on SYS_SUPPORTS_SMARTMIPS
2025 bool "Support for the SmartMIPS ASE"
2027 SmartMIPS is a extension of the MIPS32 architecture aimed at
2028 increased security at both hardware and software level for
2029 smartcards. Enabling this option will allow proper use of the
2030 SmartMIPS instructions by Linux applications. However a kernel with
2031 this option will not work on a MIPS core without SmartMIPS core. If
2032 you don't know you probably don't have SmartMIPS and should say N
2039 # Vectored interrupt mode is an R2 feature
2041 config CPU_MIPSR2_IRQ_VI
2045 # Extended interrupt mode is an R2 feature
2047 config CPU_MIPSR2_IRQ_EI
2052 depends on !CPU_R3000
2055 config GENERIC_CLOCKEVENTS_BROADCAST
2061 config CPU_DADDI_WORKAROUNDS
2064 config CPU_R4000_WORKAROUNDS
2066 select CPU_R4400_WORKAROUNDS
2068 config CPU_R4400_WORKAROUNDS
2072 # - Highmem only makes sense for the 32-bit kernel.
2073 # - The current highmem code will only work properly on physically indexed
2074 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2075 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2076 # moment we protect the user and offer the highmem option only on machines
2077 # where it's known to be safe. This will not offer highmem on a few systems
2078 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2079 # indexed CPUs but we're playing safe.
2080 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2081 # know they might have memory configurations that could make use of highmem
2085 bool "High Memory Support"
2086 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2088 config CPU_SUPPORTS_HIGHMEM
2091 config SYS_SUPPORTS_HIGHMEM
2094 config SYS_SUPPORTS_SMARTMIPS
2097 config ARCH_FLATMEM_ENABLE
2099 depends on !NUMA && !CPU_LOONGSON2
2101 config ARCH_DISCONTIGMEM_ENABLE
2103 default y if SGI_IP27
2105 Say Y to support efficient handling of discontiguous physical memory,
2106 for architectures which are either NUMA (Non-Uniform Memory Access)
2107 or have huge holes in the physical address space for other reasons.
2108 See <file:Documentation/vm/numa> for more.
2110 config ARCH_POPULATES_NODE_MAP
2113 config ARCH_SPARSEMEM_ENABLE
2115 select SPARSEMEM_STATIC
2119 depends on SYS_SUPPORTS_NUMA
2121 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2122 Access). This option improves performance on systems with more
2123 than two nodes; on two node systems it is generally better to
2124 leave it disabled; on single node systems disable this option
2127 config SYS_SUPPORTS_NUMA
2133 depends on NEED_MULTIPLE_NODES
2135 config HW_PERF_EVENTS
2136 bool "Enable hardware performance counter support for perf events"
2137 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2140 Enable hardware performance counter support for perf events. If
2141 disabled, perf events will use software events only.
2146 bool "Multi-Processing support"
2147 depends on SYS_SUPPORTS_SMP
2149 select USE_GENERIC_SMP_HELPERS
2151 This enables support for systems with more than one CPU. If you have
2152 a system with only one CPU, like most personal computers, say N. If
2153 you have a system with more than one CPU, say Y.
2155 If you say N here, the kernel will run on single and multiprocessor
2156 machines, but will use only one CPU of a multiprocessor machine. If
2157 you say Y here, the kernel will run on many, but not all,
2158 singleprocessor machines. On a singleprocessor machine, the kernel
2159 will run faster if you say N here.
2161 People using multiprocessor machines who say Y here should also say
2162 Y to "Enhanced Real Time Clock Support", below.
2164 See also the SMP-HOWTO available at
2165 <http://www.tldp.org/docs.html#howto>.
2167 If you don't know what to do here, say N.
2172 config SYS_SUPPORTS_MIPS_CMP
2175 config SYS_SUPPORTS_SMP
2178 config NR_CPUS_DEFAULT_1
2181 config NR_CPUS_DEFAULT_2
2184 config NR_CPUS_DEFAULT_4
2187 config NR_CPUS_DEFAULT_8
2190 config NR_CPUS_DEFAULT_16
2193 config NR_CPUS_DEFAULT_32
2196 config NR_CPUS_DEFAULT_64
2200 int "Maximum number of CPUs (2-64)"
2201 range 1 64 if NR_CPUS_DEFAULT_1
2203 default "1" if NR_CPUS_DEFAULT_1
2204 default "2" if NR_CPUS_DEFAULT_2
2205 default "4" if NR_CPUS_DEFAULT_4
2206 default "8" if NR_CPUS_DEFAULT_8
2207 default "16" if NR_CPUS_DEFAULT_16
2208 default "32" if NR_CPUS_DEFAULT_32
2209 default "64" if NR_CPUS_DEFAULT_64
2211 This allows you to specify the maximum number of CPUs which this
2212 kernel will support. The maximum supported value is 32 for 32-bit
2213 kernel and 64 for 64-bit kernels; the minimum value which makes
2214 sense is 1 for Qemu (useful only for kernel debugging purposes)
2215 and 2 for all others.
2217 This is purely to save memory - each supported CPU adds
2218 approximately eight kilobytes to the kernel image. For best
2219 performance should round up your number of processors to the next
2222 source "kernel/time/Kconfig"
2225 # Timer Interrupt Frequency Configuration
2229 prompt "Timer frequency"
2232 Allows the configuration of the timer frequency.
2235 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2244 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2247 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2250 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2253 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2257 config SYS_SUPPORTS_48HZ
2260 config SYS_SUPPORTS_100HZ
2263 config SYS_SUPPORTS_128HZ
2266 config SYS_SUPPORTS_250HZ
2269 config SYS_SUPPORTS_256HZ
2272 config SYS_SUPPORTS_1000HZ
2275 config SYS_SUPPORTS_1024HZ
2278 config SYS_SUPPORTS_ARBIT_HZ
2280 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2281 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2282 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2283 !SYS_SUPPORTS_1024HZ
2288 default 100 if HZ_100
2289 default 128 if HZ_128
2290 default 250 if HZ_250
2291 default 256 if HZ_256
2292 default 1000 if HZ_1000
2293 default 1024 if HZ_1024
2295 source "kernel/Kconfig.preempt"
2298 bool "Kexec system call (EXPERIMENTAL)"
2299 depends on EXPERIMENTAL
2301 kexec is a system call that implements the ability to shutdown your
2302 current kernel, and to start another kernel. It is like a reboot
2303 but it is independent of the system firmware. And like a reboot
2304 you can start any kernel with it, not just Linux.
2306 The name comes from the similarity to the exec system call.
2308 It is an ongoing process to be certain the hardware in a machine
2309 is properly shutdown, so do not be surprised if this code does not
2310 initially work for you. It may help to enable device hotplugging
2311 support. As of this writing the exact hardware interface is
2312 strongly in flux, so no good recommendation can be made.
2315 bool "Enable seccomp to safely compute untrusted bytecode"
2319 This kernel feature is useful for number crunching applications
2320 that may need to compute untrusted bytecode during their
2321 execution. By using pipes or other transports made available to
2322 the process as file descriptors supporting the read/write
2323 syscalls, it's possible to isolate those applications in
2324 their own address space using seccomp. Once seccomp is
2325 enabled via /proc/<pid>/seccomp, it cannot be disabled
2326 and the task is only allowed to execute a few safe syscalls
2327 defined by each seccomp mode.
2329 If unsure, say Y. Only embedded should say N here.
2332 bool "Flattened Device Tree support"
2334 select OF_EARLY_FLATTREE
2336 Include support for flattened device tree machine descriptions.
2340 config LOCKDEP_SUPPORT
2344 config STACKTRACE_SUPPORT
2348 source "init/Kconfig"
2350 source "kernel/Kconfig.freezer"
2352 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2360 bool "Support for PCI controller"
2361 depends on HW_HAS_PCI
2364 Find out whether you have a PCI motherboard. PCI is the name of a
2365 bus system, i.e. the way the CPU talks to the other stuff inside
2366 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2372 source "drivers/pci/Kconfig"
2375 # ISA support is now enabled via select. Too many systems still have the one
2376 # or other ISA chip on the board that users don't know about so don't expect
2377 # users to choose the right thing ...
2384 depends on HW_HAS_EISA
2386 select GENERIC_ISA_DMA
2388 The Extended Industry Standard Architecture (EISA) bus was
2389 developed as an open alternative to the IBM MicroChannel bus.
2391 The EISA bus provided some of the features of the IBM MicroChannel
2392 bus while maintaining backward compatibility with cards made for
2393 the older ISA bus. The EISA bus saw limited use between 1988 and
2394 1995 when it was made obsolete by the PCI bus.
2396 Say Y here if you are building a kernel for an EISA-based machine.
2400 source "drivers/eisa/Kconfig"
2403 bool "TURBOchannel support"
2404 depends on MACH_DECSTATION
2406 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2407 processors. TURBOchannel programming specifications are available
2409 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2411 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2412 Linux driver support status is documented at:
2413 <http://www.linux-mips.org/wiki/DECstation>
2416 # bool "Access.Bus support"
2427 select MIPS_EXTERNAL_TIMER
2432 source "drivers/pcmcia/Kconfig"
2434 source "drivers/pci/hotplug/Kconfig"
2437 bool "RapidIO support"
2441 If you say Y here, the kernel will include drivers and
2442 infrastructure code to support RapidIO interconnect devices.
2444 source "drivers/rapidio/Kconfig"
2448 menu "Executable file formats"
2450 source "fs/Kconfig.binfmt"
2455 config MIPS32_COMPAT
2456 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2459 Select this option if you want Linux/MIPS 32-bit binary
2460 compatibility. Since all software available for Linux/MIPS is
2461 currently 32-bit you should say Y here.
2465 depends on MIPS32_COMPAT
2468 config SYSVIPC_COMPAT
2470 depends on COMPAT && SYSVIPC
2474 bool "Kernel support for o32 binaries"
2475 depends on MIPS32_COMPAT
2477 Select this option if you want to run o32 binaries. These are pure
2478 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2479 existing binaries are in this format.
2484 bool "Kernel support for n32 binaries"
2485 depends on MIPS32_COMPAT
2487 Select this option if you want to run n32 binaries. These are
2488 64-bit binaries using 32-bit quantities for addressing and certain
2489 data that would normally be 64-bit. They are used in special
2496 default y if MIPS32_O32 || MIPS32_N32
2500 menu "Power management options"
2502 config ARCH_HIBERNATION_POSSIBLE
2504 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2506 config ARCH_SUSPEND_POSSIBLE
2508 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2510 source "kernel/power/Kconfig"
2514 source "arch/mips/kernel/cpufreq/Kconfig"
2516 source "net/Kconfig"
2518 source "drivers/Kconfig"
2522 source "arch/mips/Kconfig.debug"
2524 source "security/Kconfig"
2526 source "crypto/Kconfig"
2528 source "lib/Kconfig"