4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
20 select RTC_LIB if !MACH_LOONGSON
21 select GENERIC_ATOMIC64 if !64BIT
23 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_HARDIRQS
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select HAVE_ARCH_JUMP_LABEL
28 select IRQ_FORCED_THREADING
30 select HAVE_MEMBLOCK_NODE_MAP
31 select ARCH_DISCARD_MEMBLOCK
33 menu "Machine selection"
43 bool "Alchemy processor based machines"
44 select 64BIT_PHYS_ADDR
48 select SYS_HAS_CPU_MIPS32_R1
49 select SYS_SUPPORTS_32BIT_KERNEL
50 select SYS_SUPPORTS_APM_EMULATION
52 select ARCH_WANT_OPTIONAL_GPIOLIB
53 select SYS_SUPPORTS_ZBOOT
54 select USB_ARCH_HAS_OHCI
55 select USB_ARCH_HAS_EHCI
58 bool "Texas Instruments AR7"
60 select DMA_NONCOHERENT
66 select SYS_HAS_CPU_MIPS32_R1
67 select SYS_HAS_EARLY_PRINTK
68 select SYS_SUPPORTS_32BIT_KERNEL
69 select SYS_SUPPORTS_LITTLE_ENDIAN
70 select SYS_SUPPORTS_ZBOOT_UART16550
71 select ARCH_REQUIRE_GPIOLIB
74 Support for the Texas Instruments AR7 System-on-a-Chip
75 family: TNETD7100, 7200 and 7300.
78 bool "Atheros AR71XX/AR724X/AR913X based boards"
79 select ARCH_REQUIRE_GPIOLIB
83 select DMA_NONCOHERENT
86 select SYS_HAS_CPU_MIPS32_R2
87 select SYS_HAS_EARLY_PRINTK
88 select SYS_SUPPORTS_32BIT_KERNEL
89 select SYS_SUPPORTS_BIG_ENDIAN
91 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
94 bool "Broadcom BCM47XX based boards"
97 select DMA_NONCOHERENT
100 select SYS_SUPPORTS_32BIT_KERNEL
101 select SYS_SUPPORTS_LITTLE_ENDIAN
103 select SYS_HAS_EARLY_PRINTK
106 Support for BCM47XX based boards
109 bool "Broadcom BCM63XX based boards"
112 select DMA_NONCOHERENT
114 select SYS_HAS_CPU_MIPS32_R1
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_HAS_EARLY_PRINTK
119 select ARCH_REQUIRE_GPIOLIB
121 Support for BCM63XX based boards
128 select DMA_NONCOHERENT
134 select PCI_GT64XXX_PCI0
136 select SYS_HAS_CPU_NEVADA
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_64BIT_KERNEL
140 select SYS_SUPPORTS_LITTLE_ENDIAN
142 config MACH_DECSTATION
149 select CPU_DADDI_WORKAROUNDS if 64BIT
150 select CPU_R4000_WORKAROUNDS if 64BIT
151 select CPU_R4400_WORKAROUNDS if 64BIT
152 select DMA_NONCOHERENT
155 select SYS_HAS_CPU_R3000
156 select SYS_HAS_CPU_R4X00
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_128HZ
161 select SYS_SUPPORTS_256HZ
162 select SYS_SUPPORTS_1024HZ
164 This enables support for DEC's MIPS based workstations. For details
165 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
166 DECstation porting pages on <http://decstation.unix-ag.org/>.
168 If you have one of the following DECstation Models you definitely
169 want to choose R4xx0 for the CPU Type:
176 otherwise choose R3000.
179 bool "Jazz family of machines"
182 select ARCH_MAY_HAVE_PC_FDC
185 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
186 select GENERIC_ISA_DMA
187 select HAVE_PCSPKR_PLATFORM
192 select SYS_HAS_CPU_R4X00
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
195 select SYS_SUPPORTS_100HZ
197 This a family of machines based on the MIPS R4030 chipset which was
198 used by several vendors to build RISC/os and Windows NT workstations.
199 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
200 Olivetti M700-10 workstations.
203 bool "Ingenic JZ4740 based machines"
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select DMA_NONCOHERENT
210 select ARCH_REQUIRE_GPIOLIB
211 select SYS_HAS_EARLY_PRINTK
214 select GENERIC_IRQ_CHIP
217 bool "Lantiq based platforms"
218 select DMA_NONCOHERENT
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_MULTITHREADING
227 select SYS_HAS_EARLY_PRINTK
228 select ARCH_REQUIRE_GPIOLIB
231 select HAVE_MACH_CLKDEV
236 bool "LASAT Networks platforms"
239 select DMA_NONCOHERENT
240 select SYS_HAS_EARLY_PRINTK
243 select PCI_GT64XXX_PCI0
245 select R5000_CPU_SCACHE
246 select SYS_HAS_CPU_R5000
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
249 select SYS_SUPPORTS_LITTLE_ENDIAN
252 bool "Loongson family of machines"
253 select SYS_SUPPORTS_ZBOOT
255 This enables the support of Loongson family of machines.
257 Loongson is a family of general-purpose MIPS-compatible CPUs.
258 developed at Institute of Computing Technology (ICT),
259 Chinese Academy of Sciences (CAS) in the People's Republic
260 of China. The chief architect is Professor Weiwu Hu.
263 bool "MIPS Malta board"
264 select ARCH_MAY_HAVE_PC_FDC
269 select DMA_NONCOHERENT
270 select GENERIC_ISA_DMA
271 select HAVE_PCSPKR_PLATFORM
277 select MIPS_BOARDS_GEN
279 select MIPS_CPU_SCACHE
280 select PCI_GT64XXX_PCI0
283 select SYS_HAS_CPU_MIPS32_R1
284 select SYS_HAS_CPU_MIPS32_R2
285 select SYS_HAS_CPU_MIPS64_R1
286 select SYS_HAS_CPU_NEVADA
287 select SYS_HAS_CPU_RM7000
288 select SYS_HAS_EARLY_PRINTK
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_64BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_SUPPORTS_LITTLE_ENDIAN
293 select SYS_SUPPORTS_MIPS_CMP
294 select SYS_SUPPORTS_MULTITHREADING
295 select SYS_SUPPORTS_SMARTMIPS
296 select SYS_SUPPORTS_ZBOOT
298 This enables support for the MIPS Technologies Malta evaluation
302 bool 'MIPS simulator (MIPSsim)'
305 select DMA_NONCOHERENT
306 select SYS_HAS_EARLY_PRINTK
309 select SYS_HAS_CPU_MIPS32_R1
310 select SYS_HAS_CPU_MIPS32_R2
311 select SYS_HAS_EARLY_PRINTK
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_BIG_ENDIAN
314 select SYS_SUPPORTS_MULTITHREADING
315 select SYS_SUPPORTS_LITTLE_ENDIAN
317 This option enables support for MIPS Technologies MIPSsim software
321 bool "NEC EMMA2RH Mark-eins board"
325 This enables support for the NEC Electronics Mark-eins boards.
328 bool "NEC VR4100 series based machines"
331 select SYS_HAS_CPU_VR41XX
332 select ARCH_REQUIRE_GPIOLIB
335 bool "NXP STB220 board"
338 Support for NXP Semiconductors STB220 Development Board.
345 Support for NXP Semiconductors STB225 Development Board.
348 bool "NXP PNX8550 based JBS board"
350 select SYS_SUPPORTS_LITTLE_ENDIAN
352 config PNX8550_STB810
353 bool "NXP PNX8550 based STB810 board"
355 select SYS_SUPPORTS_LITTLE_ENDIAN
358 bool "PMC-Sierra MSP chipsets"
359 depends on EXPERIMENTAL
362 select DMA_NONCOHERENT
364 select NO_EXCEPT_FILL
366 select SYS_HAS_CPU_MIPS32_R1
367 select SYS_HAS_CPU_MIPS32_R2
368 select SYS_SUPPORTS_32BIT_KERNEL
369 select SYS_SUPPORTS_BIG_ENDIAN
372 select SERIAL_8250_CONSOLE
374 This adds support for the PMC-Sierra family of Multi-Service
375 Processor System-On-A-Chips. These parts include a number
376 of integrated peripherals, interfaces and DSPs in addition to
377 a variety of MIPS cores.
380 bool "PMC-Sierra Yosemite eval board"
389 select SYS_HAS_CPU_RM9000
390 select SYS_HAS_EARLY_PRINTK
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_64BIT_KERNEL
393 select SYS_SUPPORTS_BIG_ENDIAN
394 select SYS_SUPPORTS_HIGHMEM
395 select SYS_SUPPORTS_SMP
397 Yosemite is an evaluation board for the RM9000x2 processor
398 manufactured by PMC-Sierra.
404 select CPU_MIPSR2_IRQ_VI
405 select CPU_MIPSR2_IRQ_EI
407 select DMA_NONCOHERENT
409 select SYS_HAS_EARLY_PRINTK
410 select SYS_HAS_CPU_MIPS32_R2
411 select SYS_SUPPORTS_32BIT_KERNEL
412 select SYS_SUPPORTS_BIG_ENDIAN
413 select SYS_SUPPORTS_HIGHMEM
414 select USB_OHCI_LITTLE_ENDIAN
416 This enables support for the Cisco PowerTV Platform.
419 bool "SGI IP22 (Indy/Indigo2)"
425 select DEFAULT_SGI_PARTITION
426 select DMA_NONCOHERENT
430 select IP22_CPU_SCACHE
432 select GENERIC_ISA_DMA_SUPPORT_BROKEN
434 select SGI_HAS_INDYDOG
440 select SYS_HAS_CPU_R4X00
441 select SYS_HAS_CPU_R5000
443 # Disable EARLY_PRINTK for now since it leads to overwritten prom
444 # memory during early boot on some machines.
446 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
447 # for a more details discussion
449 # select SYS_HAS_EARLY_PRINTK
450 select SYS_SUPPORTS_32BIT_KERNEL
451 select SYS_SUPPORTS_64BIT_KERNEL
452 select SYS_SUPPORTS_BIG_ENDIAN
454 This are the SGI Indy, Challenge S and Indigo2, as well as certain
455 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
456 that runs on these, say Y here.
459 bool "SGI IP27 (Origin200/2000)"
463 select DEFAULT_SGI_PARTITION
465 select SYS_HAS_EARLY_PRINTK
467 select NR_CPUS_DEFAULT_64
468 select SYS_HAS_CPU_R10000
469 select SYS_SUPPORTS_64BIT_KERNEL
470 select SYS_SUPPORTS_BIG_ENDIAN
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_SMP
474 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
475 workstations. To compile a Linux kernel that runs on these, say Y
479 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
480 depends on EXPERIMENTAL
486 select DEFAULT_SGI_PARTITION
487 select DMA_NONCOHERENT
488 select GENERIC_ISA_DMA_SUPPORT_BROKEN
494 select SGI_HAS_INDYDOG
500 select SYS_HAS_CPU_R10000
502 # Disable EARLY_PRINTK for now since it leads to overwritten prom
503 # memory during early boot on some machines.
505 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
506 # for a more details discussion
508 # select SYS_HAS_EARLY_PRINTK
509 select SYS_SUPPORTS_64BIT_KERNEL
510 select SYS_SUPPORTS_BIG_ENDIAN
512 This is the SGI Indigo2 with R10000 processor. To compile a Linux
513 kernel that runs on these, say Y here.
522 select DMA_NONCOHERENT
525 select R5000_CPU_SCACHE
526 select RM7000_CPU_SCACHE
527 select SYS_HAS_CPU_R5000
528 select SYS_HAS_CPU_R10000 if BROKEN
529 select SYS_HAS_CPU_RM7000
530 select SYS_HAS_CPU_NEVADA
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
534 If you want this kernel to run on SGI O2 workstation, say Y here.
537 bool "Sibyte BCM91120C-CRhine"
538 depends on EXPERIMENTAL
541 select SIBYTE_BCM1120
543 select SYS_HAS_CPU_SB1
544 select SYS_SUPPORTS_BIG_ENDIAN
545 select SYS_SUPPORTS_LITTLE_ENDIAN
548 bool "Sibyte BCM91120x-Carmel"
549 depends on EXPERIMENTAL
552 select SIBYTE_BCM1120
554 select SYS_HAS_CPU_SB1
555 select SYS_SUPPORTS_BIG_ENDIAN
556 select SYS_SUPPORTS_LITTLE_ENDIAN
559 bool "Sibyte BCM91125C-CRhone"
560 depends on EXPERIMENTAL
563 select SIBYTE_BCM1125
565 select SYS_HAS_CPU_SB1
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select SYS_SUPPORTS_HIGHMEM
568 select SYS_SUPPORTS_LITTLE_ENDIAN
571 bool "Sibyte BCM91125E-Rhone"
572 depends on EXPERIMENTAL
575 select SIBYTE_BCM1125H
577 select SYS_HAS_CPU_SB1
578 select SYS_SUPPORTS_BIG_ENDIAN
579 select SYS_SUPPORTS_LITTLE_ENDIAN
582 bool "Sibyte BCM91250A-SWARM"
585 select HAVE_PATA_PLATFORM
586 select NR_CPUS_DEFAULT_2
589 select SYS_HAS_CPU_SB1
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_HIGHMEM
592 select SYS_SUPPORTS_LITTLE_ENDIAN
593 select ZONE_DMA32 if 64BIT
595 config SIBYTE_LITTLESUR
596 bool "Sibyte BCM91250C2-LittleSur"
597 depends on EXPERIMENTAL
600 select HAVE_PATA_PLATFORM
601 select NR_CPUS_DEFAULT_2
604 select SYS_HAS_CPU_SB1
605 select SYS_SUPPORTS_BIG_ENDIAN
606 select SYS_SUPPORTS_HIGHMEM
607 select SYS_SUPPORTS_LITTLE_ENDIAN
609 config SIBYTE_SENTOSA
610 bool "Sibyte BCM91250E-Sentosa"
611 depends on EXPERIMENTAL
614 select NR_CPUS_DEFAULT_2
617 select SYS_HAS_CPU_SB1
618 select SYS_SUPPORTS_BIG_ENDIAN
619 select SYS_SUPPORTS_LITTLE_ENDIAN
622 bool "Sibyte BCM91480B-BigSur"
625 select NR_CPUS_DEFAULT_4
626 select SIBYTE_BCM1x80
628 select SYS_HAS_CPU_SB1
629 select SYS_SUPPORTS_BIG_ENDIAN
630 select SYS_SUPPORTS_HIGHMEM
631 select SYS_SUPPORTS_LITTLE_ENDIAN
632 select ZONE_DMA32 if 64BIT
635 bool "SNI RM200/300/400"
636 select ARC if CPU_LITTLE_ENDIAN
637 select ARC32 if CPU_LITTLE_ENDIAN
638 select SNIPROM if CPU_BIG_ENDIAN
639 select ARCH_MAY_HAVE_PC_FDC
643 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
644 select DMA_NONCOHERENT
645 select GENERIC_ISA_DMA
646 select HAVE_PCSPKR_PLATFORM
653 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
654 select SYS_HAS_CPU_R4X00
655 select SYS_HAS_CPU_R5000
656 select SYS_HAS_CPU_R10000
657 select R5000_CPU_SCACHE
658 select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_HIGHMEM
663 select SYS_SUPPORTS_LITTLE_ENDIAN
665 The SNI RM200/300/400 are MIPS-based machines manufactured by
666 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
667 Technology and now in turn merged with Fujitsu. Say Y here to
668 support this machine type.
671 bool "Toshiba TX39 series based machines"
674 bool "Toshiba TX49 series based machines"
676 config MIKROTIK_RB532
677 bool "Mikrotik RB532 boards"
680 select DMA_NONCOHERENT
683 select SYS_HAS_CPU_MIPS32_R1
684 select SYS_SUPPORTS_32BIT_KERNEL
685 select SYS_SUPPORTS_LITTLE_ENDIAN
688 select ARCH_REQUIRE_GPIOLIB
690 Support the Mikrotik(tm) RouterBoard 532 series,
691 based on the IDT RC32434 SoC.
694 bool "Wind River PPMC board"
699 select DMA_NONCOHERENT
701 select PCI_GT64XXX_PCI0
703 select SYS_HAS_CPU_MIPS32_R1
704 select SYS_HAS_CPU_MIPS32_R2
705 select SYS_HAS_CPU_MIPS64_R1
706 select SYS_HAS_CPU_NEVADA
707 select SYS_HAS_CPU_RM7000
708 select SYS_SUPPORTS_32BIT_KERNEL
709 select SYS_SUPPORTS_64BIT_KERNEL
710 select SYS_SUPPORTS_BIG_ENDIAN
711 select SYS_SUPPORTS_LITTLE_ENDIAN
713 This enables support for the Wind River MIPS32 4KC PPMC evaluation
714 board, which is based on GT64120 bridge chip.
716 config CAVIUM_OCTEON_SIMULATOR
717 bool "Cavium Networks Octeon Simulator"
719 select 64BIT_PHYS_ADDR
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select SYS_SUPPORTS_HOTPLUG_CPU
724 select SYS_HAS_CPU_CAVIUM_OCTEON
727 The Octeon simulator is software performance model of the Cavium
728 Octeon Processor. It supports simulating Octeon processors on x86
731 config CAVIUM_OCTEON_REFERENCE_BOARD
732 bool "Cavium Networks Octeon reference board"
734 select 64BIT_PHYS_ADDR
736 select SYS_SUPPORTS_64BIT_KERNEL
737 select SYS_SUPPORTS_BIG_ENDIAN
738 select SYS_SUPPORTS_HOTPLUG_CPU
739 select SYS_HAS_EARLY_PRINTK
740 select SYS_HAS_CPU_CAVIUM_OCTEON
743 select ARCH_SUPPORTS_MSI
745 select USB_ARCH_HAS_OHCI
746 select USB_ARCH_HAS_EHCI
749 This option supports all of the Octeon reference boards from Cavium
750 Networks. It builds a kernel that dynamically determines the Octeon
751 CPU type and supports all known board reference implementations.
752 Some of the supported boards are:
759 Say Y here for most Octeon reference boards.
762 bool "Netlogic XLR/XLS based systems"
763 depends on EXPERIMENTAL
766 select SYS_HAS_CPU_XLR
767 select SYS_SUPPORTS_SMP
770 select SYS_SUPPORTS_32BIT_KERNEL
771 select SYS_SUPPORTS_64BIT_KERNEL
772 select 64BIT_PHYS_ADDR
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
776 select NR_CPUS_DEFAULT_32
780 select ARCH_SUPPORTS_MSI
781 select ZONE_DMA if 64BIT
783 select SYS_HAS_EARLY_PRINTK
785 Support for systems based on Netlogic XLR and XLS processors.
786 Say Y here if you have a XLR or XLS based board.
789 bool "Netlogic XLP based systems"
790 depends on EXPERIMENTAL
793 select SYS_HAS_CPU_XLP
794 select SYS_SUPPORTS_SMP
797 select SYS_SUPPORTS_32BIT_KERNEL
798 select SYS_SUPPORTS_64BIT_KERNEL
799 select 64BIT_PHYS_ADDR
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_LITTLE_ENDIAN
802 select SYS_SUPPORTS_HIGHMEM
804 select NR_CPUS_DEFAULT_32
808 select ZONE_DMA if 64BIT
810 select SYS_HAS_EARLY_PRINTK
812 This board is based on Netlogic XLP Processor.
813 Say Y here if you have a XLP based board.
817 source "arch/mips/alchemy/Kconfig"
818 source "arch/mips/ath79/Kconfig"
819 source "arch/mips/bcm47xx/Kconfig"
820 source "arch/mips/bcm63xx/Kconfig"
821 source "arch/mips/jazz/Kconfig"
822 source "arch/mips/jz4740/Kconfig"
823 source "arch/mips/lantiq/Kconfig"
824 source "arch/mips/lasat/Kconfig"
825 source "arch/mips/pmc-sierra/Kconfig"
826 source "arch/mips/powertv/Kconfig"
827 source "arch/mips/sgi-ip27/Kconfig"
828 source "arch/mips/sibyte/Kconfig"
829 source "arch/mips/txx9/Kconfig"
830 source "arch/mips/vr41xx/Kconfig"
831 source "arch/mips/cavium-octeon/Kconfig"
832 source "arch/mips/loongson/Kconfig"
833 source "arch/mips/netlogic/Kconfig"
837 config RWSEM_GENERIC_SPINLOCK
841 config RWSEM_XCHGADD_ALGORITHM
844 config ARCH_HAS_ILOG2_U32
848 config ARCH_HAS_ILOG2_U64
852 config GENERIC_HWEIGHT
856 config GENERIC_CALIBRATE_DELAY
860 config GENERIC_CLOCKEVENTS
864 config GENERIC_CMOS_UPDATE
868 config SCHED_OMIT_FRAME_POINTER
873 # Select some configuration options automatically based on user selections.
878 config ARCH_MAY_HAVE_PC_FDC
927 select ARCH_REQUIRE_GPIOLIB
933 config ARCH_DMA_ADDR_T_64BIT
934 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
939 config DMA_NONCOHERENT
941 select NEED_DMA_MAP_STATE
943 config NEED_DMA_MAP_STATE
946 config SYS_HAS_EARLY_PRINTK
950 bool "Support for hot-pluggable CPUs"
951 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
953 Say Y here to allow turning CPUs off and on. CPUs can be
954 controlled through /sys/devices/system/cpu.
955 (Note: power management support will enable this option
956 automatically on SMP systems. )
957 Say N if you want to disable CPU hotplug.
959 config SYS_SUPPORTS_HOTPLUG_CPU
974 config MIPS_DISABLE_OBSOLETE_IDE
986 config GENERIC_ISA_DMA
988 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
991 config GENERIC_ISA_DMA_SUPPORT_BROKEN
993 select GENERIC_ISA_DMA
1001 config HOLES_IN_ZONE
1005 # Endianess selection. Sufficiently obscure so many users don't know what to
1006 # answer,so we try hard to limit the available choices. Also the use of a
1007 # choice statement should be more obvious to the user.
1010 prompt "Endianess selection"
1012 Some MIPS machines can be configured for either little or big endian
1013 byte order. These modes require different kernels and a different
1014 Linux distribution. In general there is one preferred byteorder for a
1015 particular system but some systems are just as commonly used in the
1016 one or the other endianness.
1018 config CPU_BIG_ENDIAN
1020 depends on SYS_SUPPORTS_BIG_ENDIAN
1022 config CPU_LITTLE_ENDIAN
1023 bool "Little endian"
1024 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1032 config SYS_SUPPORTS_APM_EMULATION
1035 config SYS_SUPPORTS_BIG_ENDIAN
1038 config SYS_SUPPORTS_LITTLE_ENDIAN
1041 config SYS_SUPPORTS_HUGETLBFS
1043 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1070 config MIPS_BOARDS_GEN
1073 config PCI_GT64XXX_PCI0
1076 config NO_EXCEPT_FILL
1081 select SERIAL_RM9000
1087 select DMA_NONCOHERENT
1089 select SWAP_IO_SPACE
1090 select SYS_HAS_CPU_R5500
1091 select SYS_SUPPORTS_32BIT_KERNEL
1092 select SYS_SUPPORTS_64BIT_KERNEL
1093 select SYS_SUPPORTS_BIG_ENDIAN
1100 select DMA_NONCOHERENT
1101 select SYS_HAS_CPU_MIPS32_R2
1102 select SYS_SUPPORTS_32BIT_KERNEL
1103 select SYS_SUPPORTS_LITTLE_ENDIAN
1104 select SYS_SUPPORTS_BIG_ENDIAN
1106 select CPU_MIPSR2_IRQ_VI
1118 select DMA_NONCOHERENT
1120 select SYS_HAS_CPU_MIPS32_R1
1121 select SYS_HAS_EARLY_PRINTK
1122 select SYS_SUPPORTS_32BIT_KERNEL
1125 config SWAP_IO_SPACE
1128 config SERIAL_RM9000
1131 config SGI_HAS_INDYDOG
1143 config SGI_HAS_ZILOG
1146 config SGI_HAS_I8042
1149 config DEFAULT_SGI_PARTITION
1161 config MIPS_L1_CACHE_SHIFT
1163 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1164 default "6" if MIPS_CPU_SCACHE
1165 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1168 config HAVE_STD_PC_SERIAL_PORT
1172 bool "ARC console support"
1173 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1177 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1182 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1191 menu "CPU selection"
1197 config CPU_LOONGSON2E
1199 depends on SYS_HAS_CPU_LOONGSON2E
1200 select CPU_LOONGSON2
1202 The Loongson 2E processor implements the MIPS III instruction set
1203 with many extensions.
1205 It has an internal FPGA northbridge, which is compatible to
1208 config CPU_LOONGSON2F
1210 depends on SYS_HAS_CPU_LOONGSON2F
1211 select CPU_LOONGSON2
1213 select ARCH_REQUIRE_GPIOLIB
1215 The Loongson 2F processor implements the MIPS III instruction set
1216 with many extensions.
1218 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1219 have a similar programming interface with FPGA northbridge used in
1222 config CPU_MIPS32_R1
1223 bool "MIPS32 Release 1"
1224 depends on SYS_HAS_CPU_MIPS32_R1
1225 select CPU_HAS_PREFETCH
1226 select CPU_SUPPORTS_32BIT_KERNEL
1227 select CPU_SUPPORTS_HIGHMEM
1229 Choose this option to build a kernel for release 1 or later of the
1230 MIPS32 architecture. Most modern embedded systems with a 32-bit
1231 MIPS processor are based on a MIPS32 processor. If you know the
1232 specific type of processor in your system, choose those that one
1233 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1234 Release 2 of the MIPS32 architecture is available since several
1235 years so chances are you even have a MIPS32 Release 2 processor
1236 in which case you should choose CPU_MIPS32_R2 instead for better
1239 config CPU_MIPS32_R2
1240 bool "MIPS32 Release 2"
1241 depends on SYS_HAS_CPU_MIPS32_R2
1242 select CPU_HAS_PREFETCH
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_HIGHMEM
1246 Choose this option to build a kernel for release 2 or later of the
1247 MIPS32 architecture. Most modern embedded systems with a 32-bit
1248 MIPS processor are based on a MIPS32 processor. If you know the
1249 specific type of processor in your system, choose those that one
1250 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1252 config CPU_MIPS64_R1
1253 bool "MIPS64 Release 1"
1254 depends on SYS_HAS_CPU_MIPS64_R1
1255 select CPU_HAS_PREFETCH
1256 select CPU_SUPPORTS_32BIT_KERNEL
1257 select CPU_SUPPORTS_64BIT_KERNEL
1258 select CPU_SUPPORTS_HIGHMEM
1259 select CPU_SUPPORTS_HUGEPAGES
1261 Choose this option to build a kernel for release 1 or later of the
1262 MIPS64 architecture. Many modern embedded systems with a 64-bit
1263 MIPS processor are based on a MIPS64 processor. If you know the
1264 specific type of processor in your system, choose those that one
1265 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1266 Release 2 of the MIPS64 architecture is available since several
1267 years so chances are you even have a MIPS64 Release 2 processor
1268 in which case you should choose CPU_MIPS64_R2 instead for better
1271 config CPU_MIPS64_R2
1272 bool "MIPS64 Release 2"
1273 depends on SYS_HAS_CPU_MIPS64_R2
1274 select CPU_HAS_PREFETCH
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1277 select CPU_SUPPORTS_HIGHMEM
1278 select CPU_SUPPORTS_HUGEPAGES
1280 Choose this option to build a kernel for release 2 or later of the
1281 MIPS64 architecture. Many modern embedded systems with a 64-bit
1282 MIPS processor are based on a MIPS64 processor. If you know the
1283 specific type of processor in your system, choose those that one
1284 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1288 depends on SYS_HAS_CPU_R3000
1290 select CPU_SUPPORTS_32BIT_KERNEL
1291 select CPU_SUPPORTS_HIGHMEM
1293 Please make sure to pick the right CPU type. Linux/MIPS is not
1294 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1295 *not* work on R4000 machines and vice versa. However, since most
1296 of the supported machines have an R4000 (or similar) CPU, R4x00
1297 might be a safe bet. If the resulting kernel does not work,
1298 try to recompile with R3000.
1302 depends on SYS_HAS_CPU_TX39XX
1303 select CPU_SUPPORTS_32BIT_KERNEL
1307 depends on SYS_HAS_CPU_VR41XX
1308 select CPU_SUPPORTS_32BIT_KERNEL
1309 select CPU_SUPPORTS_64BIT_KERNEL
1311 The options selects support for the NEC VR4100 series of processors.
1312 Only choose this option if you have one of these processors as a
1313 kernel built with this option will not run on any other type of
1314 processor or vice versa.
1318 depends on SYS_HAS_CPU_R4300
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1322 MIPS Technologies R4300-series processors.
1326 depends on SYS_HAS_CPU_R4X00
1327 select CPU_SUPPORTS_32BIT_KERNEL
1328 select CPU_SUPPORTS_64BIT_KERNEL
1330 MIPS Technologies R4000-series processors other than 4300, including
1331 the R4000, R4400, R4600, and 4700.
1335 depends on SYS_HAS_CPU_TX49XX
1336 select CPU_HAS_PREFETCH
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1342 depends on SYS_HAS_CPU_R5000
1343 select CPU_SUPPORTS_32BIT_KERNEL
1344 select CPU_SUPPORTS_64BIT_KERNEL
1346 MIPS Technologies R5000-series processors other than the Nevada.
1350 depends on SYS_HAS_CPU_R5432
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_64BIT_KERNEL
1356 depends on SYS_HAS_CPU_R5500
1357 select CPU_SUPPORTS_32BIT_KERNEL
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HUGEPAGES
1361 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1366 depends on EXPERIMENTAL
1367 depends on SYS_HAS_CPU_R6000
1368 select CPU_SUPPORTS_32BIT_KERNEL
1370 MIPS Technologies R6000 and R6000A series processors. Note these
1371 processors are extremely rare and the support for them is incomplete.
1375 depends on SYS_HAS_CPU_NEVADA
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_64BIT_KERNEL
1379 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1383 depends on EXPERIMENTAL
1384 depends on SYS_HAS_CPU_R8000
1385 select CPU_HAS_PREFETCH
1386 select CPU_SUPPORTS_64BIT_KERNEL
1388 MIPS Technologies R8000 processors. Note these processors are
1389 uncommon and the support for them is incomplete.
1393 depends on SYS_HAS_CPU_R10000
1394 select CPU_HAS_PREFETCH
1395 select CPU_SUPPORTS_32BIT_KERNEL
1396 select CPU_SUPPORTS_64BIT_KERNEL
1397 select CPU_SUPPORTS_HIGHMEM
1399 MIPS Technologies R10000-series processors.
1403 depends on SYS_HAS_CPU_RM7000
1404 select CPU_HAS_PREFETCH
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_64BIT_KERNEL
1407 select CPU_SUPPORTS_HIGHMEM
1411 depends on SYS_HAS_CPU_RM9000
1412 select CPU_HAS_PREFETCH
1413 select CPU_SUPPORTS_32BIT_KERNEL
1414 select CPU_SUPPORTS_64BIT_KERNEL
1415 select CPU_SUPPORTS_HIGHMEM
1416 select WEAK_ORDERING
1420 depends on SYS_HAS_CPU_SB1
1421 select CPU_SUPPORTS_32BIT_KERNEL
1422 select CPU_SUPPORTS_64BIT_KERNEL
1423 select CPU_SUPPORTS_HIGHMEM
1424 select WEAK_ORDERING
1426 config CPU_CAVIUM_OCTEON
1427 bool "Cavium Octeon processor"
1428 depends on SYS_HAS_CPU_CAVIUM_OCTEON
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
2056 config GENERIC_CLOCKEVENTS_BROADCAST
2062 config CPU_DADDI_WORKAROUNDS
2065 config CPU_R4000_WORKAROUNDS
2067 select CPU_R4400_WORKAROUNDS
2069 config CPU_R4400_WORKAROUNDS
2073 # - Highmem only makes sense for the 32-bit kernel.
2074 # - The current highmem code will only work properly on physically indexed
2075 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2076 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2077 # moment we protect the user and offer the highmem option only on machines
2078 # where it's known to be safe. This will not offer highmem on a few systems
2079 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2080 # indexed CPUs but we're playing safe.
2081 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2082 # know they might have memory configurations that could make use of highmem
2086 bool "High Memory Support"
2087 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2089 config CPU_SUPPORTS_HIGHMEM
2092 config SYS_SUPPORTS_HIGHMEM
2095 config SYS_SUPPORTS_SMARTMIPS
2098 config ARCH_FLATMEM_ENABLE
2100 depends on !NUMA && !CPU_LOONGSON2
2102 config ARCH_DISCONTIGMEM_ENABLE
2104 default y if SGI_IP27
2106 Say Y to support efficient handling of discontiguous physical memory,
2107 for architectures which are either NUMA (Non-Uniform Memory Access)
2108 or have huge holes in the physical address space for other reasons.
2109 See <file:Documentation/vm/numa> for more.
2111 config ARCH_SPARSEMEM_ENABLE
2113 select SPARSEMEM_STATIC
2117 depends on SYS_SUPPORTS_NUMA
2119 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2120 Access). This option improves performance on systems with more
2121 than two nodes; on two node systems it is generally better to
2122 leave it disabled; on single node systems disable this option
2125 config SYS_SUPPORTS_NUMA
2131 depends on NEED_MULTIPLE_NODES
2133 config HW_PERF_EVENTS
2134 bool "Enable hardware performance counter support for perf events"
2135 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2138 Enable hardware performance counter support for perf events. If
2139 disabled, perf events will use software events only.
2144 bool "Multi-Processing support"
2145 depends on SYS_SUPPORTS_SMP
2147 select USE_GENERIC_SMP_HELPERS
2149 This enables support for systems with more than one CPU. If you have
2150 a system with only one CPU, like most personal computers, say N. If
2151 you have a system with more than one CPU, say Y.
2153 If you say N here, the kernel will run on single and multiprocessor
2154 machines, but will use only one CPU of a multiprocessor machine. If
2155 you say Y here, the kernel will run on many, but not all,
2156 singleprocessor machines. On a singleprocessor machine, the kernel
2157 will run faster if you say N here.
2159 People using multiprocessor machines who say Y here should also say
2160 Y to "Enhanced Real Time Clock Support", below.
2162 See also the SMP-HOWTO available at
2163 <http://www.tldp.org/docs.html#howto>.
2165 If you don't know what to do here, say N.
2170 config SYS_SUPPORTS_MIPS_CMP
2173 config SYS_SUPPORTS_SMP
2176 config NR_CPUS_DEFAULT_1
2179 config NR_CPUS_DEFAULT_2
2182 config NR_CPUS_DEFAULT_4
2185 config NR_CPUS_DEFAULT_8
2188 config NR_CPUS_DEFAULT_16
2191 config NR_CPUS_DEFAULT_32
2194 config NR_CPUS_DEFAULT_64
2198 int "Maximum number of CPUs (2-64)"
2199 range 1 64 if NR_CPUS_DEFAULT_1
2201 default "1" if NR_CPUS_DEFAULT_1
2202 default "2" if NR_CPUS_DEFAULT_2
2203 default "4" if NR_CPUS_DEFAULT_4
2204 default "8" if NR_CPUS_DEFAULT_8
2205 default "16" if NR_CPUS_DEFAULT_16
2206 default "32" if NR_CPUS_DEFAULT_32
2207 default "64" if NR_CPUS_DEFAULT_64
2209 This allows you to specify the maximum number of CPUs which this
2210 kernel will support. The maximum supported value is 32 for 32-bit
2211 kernel and 64 for 64-bit kernels; the minimum value which makes
2212 sense is 1 for Qemu (useful only for kernel debugging purposes)
2213 and 2 for all others.
2215 This is purely to save memory - each supported CPU adds
2216 approximately eight kilobytes to the kernel image. For best
2217 performance should round up your number of processors to the next
2220 source "kernel/time/Kconfig"
2223 # Timer Interrupt Frequency Configuration
2227 prompt "Timer frequency"
2230 Allows the configuration of the timer frequency.
2233 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2236 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2239 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2242 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2245 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2248 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2251 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2255 config SYS_SUPPORTS_48HZ
2258 config SYS_SUPPORTS_100HZ
2261 config SYS_SUPPORTS_128HZ
2264 config SYS_SUPPORTS_250HZ
2267 config SYS_SUPPORTS_256HZ
2270 config SYS_SUPPORTS_1000HZ
2273 config SYS_SUPPORTS_1024HZ
2276 config SYS_SUPPORTS_ARBIT_HZ
2278 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2279 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2280 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2281 !SYS_SUPPORTS_1024HZ
2286 default 100 if HZ_100
2287 default 128 if HZ_128
2288 default 250 if HZ_250
2289 default 256 if HZ_256
2290 default 1000 if HZ_1000
2291 default 1024 if HZ_1024
2293 source "kernel/Kconfig.preempt"
2296 bool "Kexec system call (EXPERIMENTAL)"
2297 depends on EXPERIMENTAL
2299 kexec is a system call that implements the ability to shutdown your
2300 current kernel, and to start another kernel. It is like a reboot
2301 but it is independent of the system firmware. And like a reboot
2302 you can start any kernel with it, not just Linux.
2304 The name comes from the similarity to the exec system call.
2306 It is an ongoing process to be certain the hardware in a machine
2307 is properly shutdown, so do not be surprised if this code does not
2308 initially work for you. It may help to enable device hotplugging
2309 support. As of this writing the exact hardware interface is
2310 strongly in flux, so no good recommendation can be made.
2313 bool "Enable seccomp to safely compute untrusted bytecode"
2317 This kernel feature is useful for number crunching applications
2318 that may need to compute untrusted bytecode during their
2319 execution. By using pipes or other transports made available to
2320 the process as file descriptors supporting the read/write
2321 syscalls, it's possible to isolate those applications in
2322 their own address space using seccomp. Once seccomp is
2323 enabled via /proc/<pid>/seccomp, it cannot be disabled
2324 and the task is only allowed to execute a few safe syscalls
2325 defined by each seccomp mode.
2327 If unsure, say Y. Only embedded should say N here.
2330 bool "Flattened Device Tree support"
2332 select OF_EARLY_FLATTREE
2335 Include support for flattened device tree machine descriptions.
2339 config LOCKDEP_SUPPORT
2343 config STACKTRACE_SUPPORT
2347 source "init/Kconfig"
2349 source "kernel/Kconfig.freezer"
2351 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2359 bool "Support for PCI controller"
2360 depends on HW_HAS_PCI
2362 select GENERIC_PCI_IOMAP
2363 select NO_GENERIC_PCI_IOPORT_MAP
2365 Find out whether you have a PCI motherboard. PCI is the name of a
2366 bus system, i.e. the way the CPU talks to the other stuff inside
2367 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2373 source "drivers/pci/Kconfig"
2376 # ISA support is now enabled via select. Too many systems still have the one
2377 # or other ISA chip on the board that users don't know about so don't expect
2378 # users to choose the right thing ...
2385 depends on HW_HAS_EISA
2387 select GENERIC_ISA_DMA
2389 The Extended Industry Standard Architecture (EISA) bus was
2390 developed as an open alternative to the IBM MicroChannel bus.
2392 The EISA bus provided some of the features of the IBM MicroChannel
2393 bus while maintaining backward compatibility with cards made for
2394 the older ISA bus. The EISA bus saw limited use between 1988 and
2395 1995 when it was made obsolete by the PCI bus.
2397 Say Y here if you are building a kernel for an EISA-based machine.
2401 source "drivers/eisa/Kconfig"
2404 bool "TURBOchannel support"
2405 depends on MACH_DECSTATION
2407 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2408 processors. TURBOchannel programming specifications are available
2410 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2412 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2413 Linux driver support status is documented at:
2414 <http://www.linux-mips.org/wiki/DECstation>
2424 select MIPS_EXTERNAL_TIMER
2429 source "drivers/pcmcia/Kconfig"
2431 source "drivers/pci/hotplug/Kconfig"
2434 bool "RapidIO support"
2438 If you say Y here, the kernel will include drivers and
2439 infrastructure code to support RapidIO interconnect devices.
2441 source "drivers/rapidio/Kconfig"
2445 menu "Executable file formats"
2447 source "fs/Kconfig.binfmt"
2452 config MIPS32_COMPAT
2453 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2456 Select this option if you want Linux/MIPS 32-bit binary
2457 compatibility. Since all software available for Linux/MIPS is
2458 currently 32-bit you should say Y here.
2462 depends on MIPS32_COMPAT
2463 select ARCH_WANT_OLD_COMPAT_IPC
2466 config SYSVIPC_COMPAT
2468 depends on COMPAT && SYSVIPC
2472 bool "Kernel support for o32 binaries"
2473 depends on MIPS32_COMPAT
2475 Select this option if you want to run o32 binaries. These are pure
2476 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2477 existing binaries are in this format.
2482 bool "Kernel support for n32 binaries"
2483 depends on MIPS32_COMPAT
2485 Select this option if you want to run n32 binaries. These are
2486 64-bit binaries using 32-bit quantities for addressing and certain
2487 data that would normally be 64-bit. They are used in special
2494 default y if MIPS32_O32 || MIPS32_N32
2498 menu "Power management options"
2500 config ARCH_HIBERNATION_POSSIBLE
2502 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2504 config ARCH_SUSPEND_POSSIBLE
2506 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2508 source "kernel/power/Kconfig"
2512 source "arch/mips/kernel/cpufreq/Kconfig"
2514 source "net/Kconfig"
2516 source "drivers/Kconfig"
2520 source "arch/mips/Kconfig.debug"
2522 source "security/Kconfig"
2524 source "crypto/Kconfig"
2526 source "lib/Kconfig"