4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
21 select RTC_LIB if !MACH_LOONGSON
22 select GENERIC_ATOMIC64 if !64BIT
24 select HAVE_DMA_API_DEBUG
25 select HAVE_GENERIC_HARDIRQS
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select HAVE_ARCH_JUMP_LABEL
29 select IRQ_FORCED_THREADING
31 select HAVE_MEMBLOCK_NODE_MAP
32 select ARCH_DISCARD_MEMBLOCK
34 menu "Machine selection"
44 bool "Alchemy processor based machines"
45 select 64BIT_PHYS_ADDR
49 select SYS_HAS_CPU_MIPS32_R1
50 select SYS_SUPPORTS_32BIT_KERNEL
51 select SYS_SUPPORTS_APM_EMULATION
53 select ARCH_WANT_OPTIONAL_GPIOLIB
54 select SYS_SUPPORTS_ZBOOT
55 select USB_ARCH_HAS_OHCI
56 select USB_ARCH_HAS_EHCI
59 bool "Texas Instruments AR7"
61 select DMA_NONCOHERENT
67 select SYS_HAS_CPU_MIPS32_R1
68 select SYS_HAS_EARLY_PRINTK
69 select SYS_SUPPORTS_32BIT_KERNEL
70 select SYS_SUPPORTS_LITTLE_ENDIAN
71 select SYS_SUPPORTS_ZBOOT_UART16550
72 select ARCH_REQUIRE_GPIOLIB
75 Support for the Texas Instruments AR7 System-on-a-Chip
76 family: TNETD7100, 7200 and 7300.
79 bool "Atheros AR71XX/AR724X/AR913X based boards"
80 select ARCH_REQUIRE_GPIOLIB
84 select DMA_NONCOHERENT
87 select SYS_HAS_CPU_MIPS32_R2
88 select SYS_HAS_EARLY_PRINTK
89 select SYS_SUPPORTS_32BIT_KERNEL
90 select SYS_SUPPORTS_BIG_ENDIAN
92 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
95 bool "Broadcom BCM47XX based boards"
98 select DMA_NONCOHERENT
101 select SYS_SUPPORTS_32BIT_KERNEL
102 select SYS_SUPPORTS_LITTLE_ENDIAN
104 select SYS_HAS_EARLY_PRINTK
107 Support for BCM47XX based boards
110 bool "Broadcom BCM63XX based boards"
113 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_HAS_EARLY_PRINTK
120 select ARCH_REQUIRE_GPIOLIB
122 Support for BCM63XX based boards
129 select DMA_NONCOHERENT
135 select PCI_GT64XXX_PCI0
137 select SYS_HAS_CPU_NEVADA
138 select SYS_HAS_EARLY_PRINTK
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_64BIT_KERNEL
141 select SYS_SUPPORTS_LITTLE_ENDIAN
143 config MACH_DECSTATION
150 select CPU_DADDI_WORKAROUNDS if 64BIT
151 select CPU_R4000_WORKAROUNDS if 64BIT
152 select CPU_R4400_WORKAROUNDS if 64BIT
153 select DMA_NONCOHERENT
156 select SYS_HAS_CPU_R3000
157 select SYS_HAS_CPU_R4X00
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_128HZ
162 select SYS_SUPPORTS_256HZ
163 select SYS_SUPPORTS_1024HZ
165 This enables support for DEC's MIPS based workstations. For details
166 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
167 DECstation porting pages on <http://decstation.unix-ag.org/>.
169 If you have one of the following DECstation Models you definitely
170 want to choose R4xx0 for the CPU Type:
177 otherwise choose R3000.
180 bool "Jazz family of machines"
183 select ARCH_MAY_HAVE_PC_FDC
186 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
187 select GENERIC_ISA_DMA
188 select HAVE_PCSPKR_PLATFORM
193 select SYS_HAS_CPU_R4X00
194 select SYS_SUPPORTS_32BIT_KERNEL
195 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
196 select SYS_SUPPORTS_100HZ
198 This a family of machines based on the MIPS R4030 chipset which was
199 used by several vendors to build RISC/os and Windows NT workstations.
200 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
201 Olivetti M700-10 workstations.
204 bool "Ingenic JZ4740 based machines"
205 select SYS_HAS_CPU_MIPS32_R1
206 select SYS_SUPPORTS_32BIT_KERNEL
207 select SYS_SUPPORTS_LITTLE_ENDIAN
208 select DMA_NONCOHERENT
211 select ARCH_REQUIRE_GPIOLIB
212 select SYS_HAS_EARLY_PRINTK
215 select GENERIC_IRQ_CHIP
218 bool "Lantiq based platforms"
219 select DMA_NONCOHERENT
223 select SYS_HAS_CPU_MIPS32_R1
224 select SYS_HAS_CPU_MIPS32_R2
225 select SYS_SUPPORTS_BIG_ENDIAN
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_MULTITHREADING
228 select SYS_HAS_EARLY_PRINTK
229 select ARCH_REQUIRE_GPIOLIB
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 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1791 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1792 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1793 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1797 The kernel memory allocator divides physically contiguous memory
1798 blocks into "zones", where each zone is a power of two number of
1799 pages. This option selects the largest power of two that the kernel
1800 keeps in the memory allocator. If you need to allocate very large
1801 blocks of physically contiguous memory, then you may need to
1802 increase this value.
1804 This config option is actually maximum order plus one. For example,
1805 a value of 11 means that the largest free memory block is 2^10 pages.
1807 The page size is not necessarily 4KB. Keep this in mind
1808 when choosing a value for this option.
1813 config IP22_CPU_SCACHE
1818 # Support for a MIPS32 / MIPS64 style S-caches
1820 config MIPS_CPU_SCACHE
1824 config R5000_CPU_SCACHE
1828 config RM7000_CPU_SCACHE
1832 config SIBYTE_DMA_PAGEOPS
1833 bool "Use DMA to clear/copy pages"
1836 Instead of using the CPU to zero and copy pages, use a Data Mover
1837 channel. These DMA channels are otherwise unused by the standard
1838 SiByte Linux port. Seems to give a small performance benefit.
1840 config CPU_HAS_PREFETCH
1844 prompt "MIPS MT options"
1846 config MIPS_MT_DISABLED
1847 bool "Disable multithreading support."
1849 Use this option if your workload can't take advantage of
1850 MIPS hardware multithreading support. On systems that don't have
1851 the option of an MT-enabled processor this option will be the only
1852 option in this menu.
1855 bool "Use 1 TC on each available VPE for SMP"
1856 depends on SYS_SUPPORTS_MULTITHREADING
1857 select CPU_MIPSR2_IRQ_VI
1858 select CPU_MIPSR2_IRQ_EI
1860 select NR_CPUS_DEFAULT_2
1862 select SYS_SUPPORTS_SCHED_SMT if SMP
1863 select SYS_SUPPORTS_SMP
1866 This is a kernel model which is known a VSMP but lately has been
1867 marketesed into SMVP.
1868 Virtual SMP uses the processor's VPEs to implement virtual
1869 processors. In currently available configuration of the 34K processor
1870 this allows for a dual processor. Both processors will share the same
1871 primary caches; each will obtain the half of the TLB for it's own
1872 exclusive use. For a layman this model can be described as similar to
1873 what Intel calls Hyperthreading.
1875 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1878 bool "SMTC: Use all TCs on all VPEs for SMP"
1879 depends on CPU_MIPS32_R2
1880 #depends on CPU_MIPS64_R2 # once there is hardware ...
1881 depends on SYS_SUPPORTS_MULTITHREADING
1882 select CPU_MIPSR2_IRQ_VI
1883 select CPU_MIPSR2_IRQ_EI
1885 select NR_CPUS_DEFAULT_8
1887 select SYS_SUPPORTS_SMP
1890 This is a kernel model which is known a SMTC or lately has been
1891 marketesed into SMVP.
1892 is presenting the available TC's of the core as processors to Linux.
1893 On currently available 34K processors this means a Linux system will
1894 see up to 5 processors. The implementation of the SMTC kernel differs
1895 significantly from VSMP and cannot efficiently coexist in the same
1896 kernel binary so the choice between VSMP and SMTC is a compile time
1899 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1907 bool "SMT (multithreading) scheduler support"
1908 depends on SYS_SUPPORTS_SCHED_SMT
1911 SMT scheduler support improves the CPU scheduler's decision making
1912 when dealing with MIPS MT enabled cores at a cost of slightly
1913 increased overhead in some places. If unsure say N here.
1915 config SYS_SUPPORTS_SCHED_SMT
1919 config SYS_SUPPORTS_MULTITHREADING
1922 config MIPS_MT_FPAFF
1923 bool "Dynamic FPU affinity for FP-intensive threads"
1925 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1927 config MIPS_VPE_LOADER
1928 bool "VPE loader support."
1929 depends on SYS_SUPPORTS_MULTITHREADING
1930 select CPU_MIPSR2_IRQ_VI
1931 select CPU_MIPSR2_IRQ_EI
1934 Includes a loader for loading an elf relocatable object
1935 onto another VPE and running it.
1937 config MIPS_MT_SMTC_IM_BACKSTOP
1938 bool "Use per-TC register bits as backstop for inhibited IM bits"
1939 depends on MIPS_MT_SMTC
1942 To support multiple TC microthreads acting as "CPUs" within
1943 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1944 during interrupt handling. To support legacy drivers and interrupt
1945 controller management code, SMTC has a "backstop" to track and
1946 if necessary restore the interrupt mask. This has some performance
1947 impact on interrupt service overhead.
1949 config MIPS_MT_SMTC_IRQAFF
1950 bool "Support IRQ affinity API"
1951 depends on MIPS_MT_SMTC
1954 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1955 for SMTC Linux kernel. Requires platform support, of which
1956 an example can be found in the MIPS kernel i8259 and Malta
1957 platform code. Adds some overhead to interrupt dispatch, and
1958 should be used only if you know what you are doing.
1960 config MIPS_VPE_LOADER_TOM
1961 bool "Load VPE program into memory hidden from linux"
1962 depends on MIPS_VPE_LOADER
1965 The loader can use memory that is present but has been hidden from
1966 Linux using the kernel command line option "mem=xxMB". It's up to
1967 you to ensure the amount you put in the option and the space your
1968 program requires is less or equal to the amount physically present.
1970 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1971 config MIPS_VPE_APSP_API
1972 bool "Enable support for AP/SP API (RTLX)"
1973 depends on MIPS_VPE_LOADER
1976 config MIPS_APSP_KSPD
1978 depends on MIPS_VPE_APSP_API
1981 KSPD is a kernel daemon that accepts syscall requests from the SP
1982 side, actions them and returns the results. It also handles the
1983 "exit" syscall notifying other kernel modules the SP program is
1984 exiting. You probably want to say yes here.
1987 bool "MIPS CMP framework support"
1988 depends on SYS_SUPPORTS_MIPS_CMP
1990 select SYS_SUPPORTS_SMP
1991 select SYS_SUPPORTS_SCHED_SMT if SMP
1992 select WEAK_ORDERING
1995 This is a placeholder option for the GCMP work. It will need to
1996 be handled differently...
1998 config SB1_PASS_1_WORKAROUNDS
2000 depends on CPU_SB1_PASS_1
2003 config SB1_PASS_2_WORKAROUNDS
2005 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2008 config SB1_PASS_2_1_WORKAROUNDS
2010 depends on CPU_SB1 && CPU_SB1_PASS_2
2013 config 64BIT_PHYS_ADDR
2016 config ARCH_PHYS_ADDR_T_64BIT
2017 def_bool 64BIT_PHYS_ADDR
2019 config CPU_HAS_SMARTMIPS
2020 depends on SYS_SUPPORTS_SMARTMIPS
2021 bool "Support for the SmartMIPS ASE"
2023 SmartMIPS is a extension of the MIPS32 architecture aimed at
2024 increased security at both hardware and software level for
2025 smartcards. Enabling this option will allow proper use of the
2026 SmartMIPS instructions by Linux applications. However a kernel with
2027 this option will not work on a MIPS core without SmartMIPS core. If
2028 you don't know you probably don't have SmartMIPS and should say N
2038 # Vectored interrupt mode is an R2 feature
2040 config CPU_MIPSR2_IRQ_VI
2044 # Extended interrupt mode is an R2 feature
2046 config CPU_MIPSR2_IRQ_EI
2051 depends on !CPU_R3000
2054 config GENERIC_CLOCKEVENTS_BROADCAST
2060 config CPU_DADDI_WORKAROUNDS
2063 config CPU_R4000_WORKAROUNDS
2065 select CPU_R4400_WORKAROUNDS
2067 config CPU_R4400_WORKAROUNDS
2071 # - Highmem only makes sense for the 32-bit kernel.
2072 # - The current highmem code will only work properly on physically indexed
2073 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2074 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2075 # moment we protect the user and offer the highmem option only on machines
2076 # where it's known to be safe. This will not offer highmem on a few systems
2077 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2078 # indexed CPUs but we're playing safe.
2079 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2080 # know they might have memory configurations that could make use of highmem
2084 bool "High Memory Support"
2085 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2087 config CPU_SUPPORTS_HIGHMEM
2090 config SYS_SUPPORTS_HIGHMEM
2093 config SYS_SUPPORTS_SMARTMIPS
2096 config ARCH_FLATMEM_ENABLE
2098 depends on !NUMA && !CPU_LOONGSON2
2100 config ARCH_DISCONTIGMEM_ENABLE
2102 default y if SGI_IP27
2104 Say Y to support efficient handling of discontiguous physical memory,
2105 for architectures which are either NUMA (Non-Uniform Memory Access)
2106 or have huge holes in the physical address space for other reasons.
2107 See <file:Documentation/vm/numa> for more.
2109 config ARCH_SPARSEMEM_ENABLE
2111 select SPARSEMEM_STATIC
2115 depends on SYS_SUPPORTS_NUMA
2117 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2118 Access). This option improves performance on systems with more
2119 than two nodes; on two node systems it is generally better to
2120 leave it disabled; on single node systems disable this option
2123 config SYS_SUPPORTS_NUMA
2129 depends on NEED_MULTIPLE_NODES
2131 config HW_PERF_EVENTS
2132 bool "Enable hardware performance counter support for perf events"
2133 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2136 Enable hardware performance counter support for perf events. If
2137 disabled, perf events will use software events only.
2142 bool "Multi-Processing support"
2143 depends on SYS_SUPPORTS_SMP
2145 select USE_GENERIC_SMP_HELPERS
2147 This enables support for systems with more than one CPU. If you have
2148 a system with only one CPU, like most personal computers, say N. If
2149 you have a system with more than one CPU, say Y.
2151 If you say N here, the kernel will run on single and multiprocessor
2152 machines, but will use only one CPU of a multiprocessor machine. If
2153 you say Y here, the kernel will run on many, but not all,
2154 singleprocessor machines. On a singleprocessor machine, the kernel
2155 will run faster if you say N here.
2157 People using multiprocessor machines who say Y here should also say
2158 Y to "Enhanced Real Time Clock Support", below.
2160 See also the SMP-HOWTO available at
2161 <http://www.tldp.org/docs.html#howto>.
2163 If you don't know what to do here, say N.
2168 config SYS_SUPPORTS_MIPS_CMP
2171 config SYS_SUPPORTS_SMP
2174 config NR_CPUS_DEFAULT_1
2177 config NR_CPUS_DEFAULT_2
2180 config NR_CPUS_DEFAULT_4
2183 config NR_CPUS_DEFAULT_8
2186 config NR_CPUS_DEFAULT_16
2189 config NR_CPUS_DEFAULT_32
2192 config NR_CPUS_DEFAULT_64
2196 int "Maximum number of CPUs (2-64)"
2197 range 1 64 if NR_CPUS_DEFAULT_1
2199 default "1" if NR_CPUS_DEFAULT_1
2200 default "2" if NR_CPUS_DEFAULT_2
2201 default "4" if NR_CPUS_DEFAULT_4
2202 default "8" if NR_CPUS_DEFAULT_8
2203 default "16" if NR_CPUS_DEFAULT_16
2204 default "32" if NR_CPUS_DEFAULT_32
2205 default "64" if NR_CPUS_DEFAULT_64
2207 This allows you to specify the maximum number of CPUs which this
2208 kernel will support. The maximum supported value is 32 for 32-bit
2209 kernel and 64 for 64-bit kernels; the minimum value which makes
2210 sense is 1 for Qemu (useful only for kernel debugging purposes)
2211 and 2 for all others.
2213 This is purely to save memory - each supported CPU adds
2214 approximately eight kilobytes to the kernel image. For best
2215 performance should round up your number of processors to the next
2218 source "kernel/time/Kconfig"
2221 # Timer Interrupt Frequency Configuration
2225 prompt "Timer frequency"
2228 Allows the configuration of the timer frequency.
2231 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2234 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2240 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2243 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2246 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2249 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2253 config SYS_SUPPORTS_48HZ
2256 config SYS_SUPPORTS_100HZ
2259 config SYS_SUPPORTS_128HZ
2262 config SYS_SUPPORTS_250HZ
2265 config SYS_SUPPORTS_256HZ
2268 config SYS_SUPPORTS_1000HZ
2271 config SYS_SUPPORTS_1024HZ
2274 config SYS_SUPPORTS_ARBIT_HZ
2276 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2277 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2278 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2279 !SYS_SUPPORTS_1024HZ
2284 default 100 if HZ_100
2285 default 128 if HZ_128
2286 default 250 if HZ_250
2287 default 256 if HZ_256
2288 default 1000 if HZ_1000
2289 default 1024 if HZ_1024
2291 source "kernel/Kconfig.preempt"
2294 bool "Kexec system call (EXPERIMENTAL)"
2295 depends on EXPERIMENTAL
2297 kexec is a system call that implements the ability to shutdown your
2298 current kernel, and to start another kernel. It is like a reboot
2299 but it is independent of the system firmware. And like a reboot
2300 you can start any kernel with it, not just Linux.
2302 The name comes from the similarity to the exec system call.
2304 It is an ongoing process to be certain the hardware in a machine
2305 is properly shutdown, so do not be surprised if this code does not
2306 initially work for you. It may help to enable device hotplugging
2307 support. As of this writing the exact hardware interface is
2308 strongly in flux, so no good recommendation can be made.
2311 bool "Enable seccomp to safely compute untrusted bytecode"
2315 This kernel feature is useful for number crunching applications
2316 that may need to compute untrusted bytecode during their
2317 execution. By using pipes or other transports made available to
2318 the process as file descriptors supporting the read/write
2319 syscalls, it's possible to isolate those applications in
2320 their own address space using seccomp. Once seccomp is
2321 enabled via /proc/<pid>/seccomp, it cannot be disabled
2322 and the task is only allowed to execute a few safe syscalls
2323 defined by each seccomp mode.
2325 If unsure, say Y. Only embedded should say N here.
2328 bool "Flattened Device Tree support"
2330 select OF_EARLY_FLATTREE
2333 Include support for flattened device tree machine descriptions.
2337 config LOCKDEP_SUPPORT
2341 config STACKTRACE_SUPPORT
2345 source "init/Kconfig"
2347 source "kernel/Kconfig.freezer"
2349 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2357 bool "Support for PCI controller"
2358 depends on HW_HAS_PCI
2360 select GENERIC_PCI_IOMAP
2361 select NO_GENERIC_PCI_IOPORT_MAP
2363 Find out whether you have a PCI motherboard. PCI is the name of a
2364 bus system, i.e. the way the CPU talks to the other stuff inside
2365 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2371 source "drivers/pci/Kconfig"
2374 # ISA support is now enabled via select. Too many systems still have the one
2375 # or other ISA chip on the board that users don't know about so don't expect
2376 # users to choose the right thing ...
2383 depends on HW_HAS_EISA
2385 select GENERIC_ISA_DMA
2387 The Extended Industry Standard Architecture (EISA) bus was
2388 developed as an open alternative to the IBM MicroChannel bus.
2390 The EISA bus provided some of the features of the IBM MicroChannel
2391 bus while maintaining backward compatibility with cards made for
2392 the older ISA bus. The EISA bus saw limited use between 1988 and
2393 1995 when it was made obsolete by the PCI bus.
2395 Say Y here if you are building a kernel for an EISA-based machine.
2399 source "drivers/eisa/Kconfig"
2402 bool "TURBOchannel support"
2403 depends on MACH_DECSTATION
2405 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2406 processors. TURBOchannel programming specifications are available
2408 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2410 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2411 Linux driver support status is documented at:
2412 <http://www.linux-mips.org/wiki/DECstation>
2422 select MIPS_EXTERNAL_TIMER
2427 source "drivers/pcmcia/Kconfig"
2429 source "drivers/pci/hotplug/Kconfig"
2432 bool "RapidIO support"
2436 If you say Y here, the kernel will include drivers and
2437 infrastructure code to support RapidIO interconnect devices.
2439 source "drivers/rapidio/Kconfig"
2443 menu "Executable file formats"
2445 source "fs/Kconfig.binfmt"
2450 config MIPS32_COMPAT
2451 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2454 Select this option if you want Linux/MIPS 32-bit binary
2455 compatibility. Since all software available for Linux/MIPS is
2456 currently 32-bit you should say Y here.
2460 depends on MIPS32_COMPAT
2461 select ARCH_WANT_OLD_COMPAT_IPC
2464 config SYSVIPC_COMPAT
2466 depends on COMPAT && SYSVIPC
2470 bool "Kernel support for o32 binaries"
2471 depends on MIPS32_COMPAT
2473 Select this option if you want to run o32 binaries. These are pure
2474 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2475 existing binaries are in this format.
2480 bool "Kernel support for n32 binaries"
2481 depends on MIPS32_COMPAT
2483 Select this option if you want to run n32 binaries. These are
2484 64-bit binaries using 32-bit quantities for addressing and certain
2485 data that would normally be 64-bit. They are used in special
2492 default y if MIPS32_O32 || MIPS32_N32
2496 menu "Power management options"
2498 config ARCH_HIBERNATION_POSSIBLE
2500 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2502 config ARCH_SUSPEND_POSSIBLE
2504 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2506 source "kernel/power/Kconfig"
2510 source "arch/mips/kernel/cpufreq/Kconfig"
2512 source "net/Kconfig"
2514 source "drivers/Kconfig"
2518 source "arch/mips/Kconfig.debug"
2520 source "security/Kconfig"
2522 source "crypto/Kconfig"
2524 source "lib/Kconfig"