4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select RTC_LIB if !MACH_LOONGSON
20 select GENERIC_ATOMIC64 if !64BIT
22 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_HARDIRQS
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select HAVE_ARCH_JUMP_LABEL
27 select IRQ_FORCED_THREADING
29 menu "Machine selection"
39 bool "Alchemy processor based machines"
40 select 64BIT_PHYS_ADDR
44 select SYS_HAS_CPU_MIPS32_R1
45 select SYS_SUPPORTS_32BIT_KERNEL
46 select SYS_SUPPORTS_APM_EMULATION
48 select ARCH_WANT_OPTIONAL_GPIOLIB
49 select SYS_SUPPORTS_ZBOOT
52 bool "Texas Instruments AR7"
54 select DMA_NONCOHERENT
60 select SYS_HAS_CPU_MIPS32_R1
61 select SYS_HAS_EARLY_PRINTK
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_LITTLE_ENDIAN
64 select SYS_SUPPORTS_ZBOOT_UART16550
65 select ARCH_REQUIRE_GPIOLIB
69 Support for the Texas Instruments AR7 System-on-a-Chip
70 family: TNETD7100, 7200 and 7300.
73 bool "Atheros AR71XX/AR724X/AR913X based boards"
74 select ARCH_REQUIRE_GPIOLIB
78 select DMA_NONCOHERENT
81 select SYS_HAS_CPU_MIPS32_R2
82 select SYS_HAS_EARLY_PRINTK
83 select SYS_SUPPORTS_32BIT_KERNEL
84 select SYS_SUPPORTS_BIG_ENDIAN
86 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
89 bool "Broadcom BCM47XX based boards"
92 select DMA_NONCOHERENT
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SYS_HAS_EARLY_PRINTK
101 Support for BCM47XX based boards
104 bool "Broadcom BCM63XX based boards"
107 select DMA_NONCOHERENT
109 select SYS_HAS_CPU_MIPS32_R1
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_SUPPORTS_BIG_ENDIAN
112 select SYS_HAS_EARLY_PRINTK
114 select ARCH_REQUIRE_GPIOLIB
116 Support for BCM63XX based boards
123 select DMA_NONCOHERENT
129 select PCI_GT64XXX_PCI0
131 select SYS_HAS_CPU_NEVADA
132 select SYS_HAS_EARLY_PRINTK
133 select SYS_SUPPORTS_32BIT_KERNEL
134 select SYS_SUPPORTS_64BIT_KERNEL
135 select SYS_SUPPORTS_LITTLE_ENDIAN
137 config MACH_DECSTATION
144 select CPU_DADDI_WORKAROUNDS if 64BIT
145 select CPU_R4000_WORKAROUNDS if 64BIT
146 select CPU_R4400_WORKAROUNDS if 64BIT
147 select DMA_NONCOHERENT
150 select SYS_HAS_CPU_R3000
151 select SYS_HAS_CPU_R4X00
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
154 select SYS_SUPPORTS_LITTLE_ENDIAN
155 select SYS_SUPPORTS_128HZ
156 select SYS_SUPPORTS_256HZ
157 select SYS_SUPPORTS_1024HZ
159 This enables support for DEC's MIPS based workstations. For details
160 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
161 DECstation porting pages on <http://decstation.unix-ag.org/>.
163 If you have one of the following DECstation Models you definitely
164 want to choose R4xx0 for the CPU Type:
171 otherwise choose R3000.
174 bool "Jazz family of machines"
177 select ARCH_MAY_HAVE_PC_FDC
180 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
181 select GENERIC_ISA_DMA
182 select HAVE_PCSPKR_PLATFORM
187 select SYS_HAS_CPU_R4X00
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
190 select SYS_SUPPORTS_100HZ
192 This a family of machines based on the MIPS R4030 chipset which was
193 used by several vendors to build RISC/os and Windows NT workstations.
194 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
195 Olivetti M700-10 workstations.
198 bool "Ingenic JZ4740 based machines"
199 select SYS_HAS_CPU_MIPS32_R1
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_SUPPORTS_LITTLE_ENDIAN
202 select DMA_NONCOHERENT
205 select ARCH_REQUIRE_GPIOLIB
206 select SYS_HAS_EARLY_PRINTK
211 bool "Lantiq based platforms"
212 select DMA_NONCOHERENT
216 select SYS_HAS_CPU_MIPS32_R1
217 select SYS_HAS_CPU_MIPS32_R2
218 select SYS_SUPPORTS_BIG_ENDIAN
219 select SYS_SUPPORTS_32BIT_KERNEL
220 select SYS_SUPPORTS_MULTITHREADING
221 select SYS_HAS_EARLY_PRINTK
222 select ARCH_REQUIRE_GPIOLIB
229 bool "LASAT Networks platforms"
232 select DMA_NONCOHERENT
233 select SYS_HAS_EARLY_PRINTK
236 select PCI_GT64XXX_PCI0
238 select R5000_CPU_SCACHE
239 select SYS_HAS_CPU_R5000
240 select SYS_SUPPORTS_32BIT_KERNEL
241 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
242 select SYS_SUPPORTS_LITTLE_ENDIAN
245 bool "Loongson family of machines"
246 select SYS_SUPPORTS_ZBOOT
248 This enables the support of Loongson family of machines.
250 Loongson is a family of general-purpose MIPS-compatible CPUs.
251 developed at Institute of Computing Technology (ICT),
252 Chinese Academy of Sciences (CAS) in the People's Republic
253 of China. The chief architect is Professor Weiwu Hu.
256 bool "MIPS Malta board"
257 select ARCH_MAY_HAVE_PC_FDC
262 select DMA_NONCOHERENT
263 select GENERIC_ISA_DMA
264 select HAVE_PCSPKR_PLATFORM
270 select MIPS_BOARDS_GEN
272 select MIPS_CPU_SCACHE
273 select PCI_GT64XXX_PCI0
276 select SYS_HAS_CPU_MIPS32_R1
277 select SYS_HAS_CPU_MIPS32_R2
278 select SYS_HAS_CPU_MIPS64_R1
279 select SYS_HAS_CPU_NEVADA
280 select SYS_HAS_CPU_RM7000
281 select SYS_HAS_EARLY_PRINTK
282 select SYS_SUPPORTS_32BIT_KERNEL
283 select SYS_SUPPORTS_64BIT_KERNEL
284 select SYS_SUPPORTS_BIG_ENDIAN
285 select SYS_SUPPORTS_LITTLE_ENDIAN
286 select SYS_SUPPORTS_MIPS_CMP
287 select SYS_SUPPORTS_MULTITHREADING
288 select SYS_SUPPORTS_SMARTMIPS
289 select SYS_SUPPORTS_ZBOOT
291 This enables support for the MIPS Technologies Malta evaluation
295 bool 'MIPS simulator (MIPSsim)'
298 select DMA_NONCOHERENT
299 select SYS_HAS_EARLY_PRINTK
302 select SYS_HAS_CPU_MIPS32_R1
303 select SYS_HAS_CPU_MIPS32_R2
304 select SYS_HAS_EARLY_PRINTK
305 select SYS_SUPPORTS_32BIT_KERNEL
306 select SYS_SUPPORTS_BIG_ENDIAN
307 select SYS_SUPPORTS_MULTITHREADING
308 select SYS_SUPPORTS_LITTLE_ENDIAN
310 This option enables support for MIPS Technologies MIPSsim software
314 bool "NEC EMMA2RH Mark-eins board"
318 This enables support for the NEC Electronics Mark-eins boards.
321 bool "NEC VR4100 series based machines"
324 select SYS_HAS_CPU_VR41XX
325 select ARCH_REQUIRE_GPIOLIB
328 bool "NXP STB220 board"
331 Support for NXP Semiconductors STB220 Development Board.
338 Support for NXP Semiconductors STB225 Development Board.
341 bool "NXP PNX8550 based JBS board"
343 select SYS_SUPPORTS_LITTLE_ENDIAN
345 config PNX8550_STB810
346 bool "NXP PNX8550 based STB810 board"
348 select SYS_SUPPORTS_LITTLE_ENDIAN
351 bool "PMC-Sierra MSP chipsets"
352 depends on EXPERIMENTAL
355 select DMA_NONCOHERENT
357 select NO_EXCEPT_FILL
359 select SYS_HAS_CPU_MIPS32_R1
360 select SYS_HAS_CPU_MIPS32_R2
361 select SYS_SUPPORTS_32BIT_KERNEL
362 select SYS_SUPPORTS_BIG_ENDIAN
365 select SERIAL_8250_CONSOLE
367 This adds support for the PMC-Sierra family of Multi-Service
368 Processor System-On-A-Chips. These parts include a number
369 of integrated peripherals, interfaces and DSPs in addition to
370 a variety of MIPS cores.
373 bool "PMC-Sierra Yosemite eval board"
382 select SYS_HAS_CPU_RM9000
383 select SYS_HAS_EARLY_PRINTK
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_64BIT_KERNEL
386 select SYS_SUPPORTS_BIG_ENDIAN
387 select SYS_SUPPORTS_HIGHMEM
388 select SYS_SUPPORTS_SMP
390 Yosemite is an evaluation board for the RM9000x2 processor
391 manufactured by PMC-Sierra.
397 select CPU_MIPSR2_IRQ_VI
398 select CPU_MIPSR2_IRQ_EI
400 select DMA_NONCOHERENT
402 select SYS_HAS_EARLY_PRINTK
403 select SYS_HAS_CPU_MIPS32_R2
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_BIG_ENDIAN
406 select SYS_SUPPORTS_HIGHMEM
407 select USB_OHCI_LITTLE_ENDIAN
409 This enables support for the Cisco PowerTV Platform.
412 bool "SGI IP22 (Indy/Indigo2)"
418 select DEFAULT_SGI_PARTITION
419 select DMA_NONCOHERENT
423 select IP22_CPU_SCACHE
425 select GENERIC_ISA_DMA_SUPPORT_BROKEN
427 select SGI_HAS_INDYDOG
433 select SYS_HAS_CPU_R4X00
434 select SYS_HAS_CPU_R5000
436 # Disable EARLY_PRINTK for now since it leads to overwritten prom
437 # memory during early boot on some machines.
439 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
440 # for a more details discussion
442 # select SYS_HAS_EARLY_PRINTK
443 select SYS_SUPPORTS_32BIT_KERNEL
444 select SYS_SUPPORTS_64BIT_KERNEL
445 select SYS_SUPPORTS_BIG_ENDIAN
447 This are the SGI Indy, Challenge S and Indigo2, as well as certain
448 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
449 that runs on these, say Y here.
452 bool "SGI IP27 (Origin200/2000)"
456 select DEFAULT_SGI_PARTITION
458 select SYS_HAS_EARLY_PRINTK
460 select NR_CPUS_DEFAULT_64
461 select SYS_HAS_CPU_R10000
462 select SYS_SUPPORTS_64BIT_KERNEL
463 select SYS_SUPPORTS_BIG_ENDIAN
464 select SYS_SUPPORTS_NUMA
465 select SYS_SUPPORTS_SMP
467 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
468 workstations. To compile a Linux kernel that runs on these, say Y
472 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
473 depends on EXPERIMENTAL
479 select DEFAULT_SGI_PARTITION
480 select DMA_NONCOHERENT
481 select GENERIC_ISA_DMA_SUPPORT_BROKEN
487 select SGI_HAS_INDYDOG
493 select SYS_HAS_CPU_R10000
495 # Disable EARLY_PRINTK for now since it leads to overwritten prom
496 # memory during early boot on some machines.
498 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
499 # for a more details discussion
501 # select SYS_HAS_EARLY_PRINTK
502 select SYS_SUPPORTS_64BIT_KERNEL
503 select SYS_SUPPORTS_BIG_ENDIAN
505 This is the SGI Indigo2 with R10000 processor. To compile a Linux
506 kernel that runs on these, say Y here.
515 select DMA_NONCOHERENT
518 select R5000_CPU_SCACHE
519 select RM7000_CPU_SCACHE
520 select SYS_HAS_CPU_R5000
521 select SYS_HAS_CPU_R10000 if BROKEN
522 select SYS_HAS_CPU_RM7000
523 select SYS_HAS_CPU_NEVADA
524 select SYS_SUPPORTS_64BIT_KERNEL
525 select SYS_SUPPORTS_BIG_ENDIAN
527 If you want this kernel to run on SGI O2 workstation, say Y here.
530 bool "Sibyte BCM91120C-CRhine"
531 depends on EXPERIMENTAL
534 select SIBYTE_BCM1120
536 select SYS_HAS_CPU_SB1
537 select SYS_SUPPORTS_BIG_ENDIAN
538 select SYS_SUPPORTS_LITTLE_ENDIAN
541 bool "Sibyte BCM91120x-Carmel"
542 depends on EXPERIMENTAL
545 select SIBYTE_BCM1120
547 select SYS_HAS_CPU_SB1
548 select SYS_SUPPORTS_BIG_ENDIAN
549 select SYS_SUPPORTS_LITTLE_ENDIAN
552 bool "Sibyte BCM91125C-CRhone"
553 depends on EXPERIMENTAL
556 select SIBYTE_BCM1125
558 select SYS_HAS_CPU_SB1
559 select SYS_SUPPORTS_BIG_ENDIAN
560 select SYS_SUPPORTS_HIGHMEM
561 select SYS_SUPPORTS_LITTLE_ENDIAN
564 bool "Sibyte BCM91125E-Rhone"
565 depends on EXPERIMENTAL
568 select SIBYTE_BCM1125H
570 select SYS_HAS_CPU_SB1
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_LITTLE_ENDIAN
575 bool "Sibyte BCM91250A-SWARM"
578 select HAVE_PATA_PLATFORM
579 select NR_CPUS_DEFAULT_2
582 select SYS_HAS_CPU_SB1
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_HIGHMEM
585 select SYS_SUPPORTS_LITTLE_ENDIAN
586 select ZONE_DMA32 if 64BIT
588 config SIBYTE_LITTLESUR
589 bool "Sibyte BCM91250C2-LittleSur"
590 depends on EXPERIMENTAL
593 select HAVE_PATA_PLATFORM
594 select NR_CPUS_DEFAULT_2
597 select SYS_HAS_CPU_SB1
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select SYS_SUPPORTS_HIGHMEM
600 select SYS_SUPPORTS_LITTLE_ENDIAN
602 config SIBYTE_SENTOSA
603 bool "Sibyte BCM91250E-Sentosa"
604 depends on EXPERIMENTAL
607 select NR_CPUS_DEFAULT_2
610 select SYS_HAS_CPU_SB1
611 select SYS_SUPPORTS_BIG_ENDIAN
612 select SYS_SUPPORTS_LITTLE_ENDIAN
615 bool "Sibyte BCM91480B-BigSur"
618 select NR_CPUS_DEFAULT_4
619 select SIBYTE_BCM1x80
621 select SYS_HAS_CPU_SB1
622 select SYS_SUPPORTS_BIG_ENDIAN
623 select SYS_SUPPORTS_HIGHMEM
624 select SYS_SUPPORTS_LITTLE_ENDIAN
625 select ZONE_DMA32 if 64BIT
628 bool "SNI RM200/300/400"
629 select ARC if CPU_LITTLE_ENDIAN
630 select ARC32 if CPU_LITTLE_ENDIAN
631 select SNIPROM if CPU_BIG_ENDIAN
632 select ARCH_MAY_HAVE_PC_FDC
636 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
637 select DMA_NONCOHERENT
638 select GENERIC_ISA_DMA
639 select HAVE_PCSPKR_PLATFORM
646 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
647 select SYS_HAS_CPU_R4X00
648 select SYS_HAS_CPU_R5000
649 select SYS_HAS_CPU_R10000
650 select R5000_CPU_SCACHE
651 select SYS_HAS_EARLY_PRINTK
652 select SYS_SUPPORTS_32BIT_KERNEL
653 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_HIGHMEM
656 select SYS_SUPPORTS_LITTLE_ENDIAN
658 The SNI RM200/300/400 are MIPS-based machines manufactured by
659 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
660 Technology and now in turn merged with Fujitsu. Say Y here to
661 support this machine type.
664 bool "Toshiba TX39 series based machines"
667 bool "Toshiba TX49 series based machines"
669 config MIKROTIK_RB532
670 bool "Mikrotik RB532 boards"
673 select DMA_NONCOHERENT
676 select SYS_HAS_CPU_MIPS32_R1
677 select SYS_SUPPORTS_32BIT_KERNEL
678 select SYS_SUPPORTS_LITTLE_ENDIAN
681 select ARCH_REQUIRE_GPIOLIB
683 Support the Mikrotik(tm) RouterBoard 532 series,
684 based on the IDT RC32434 SoC.
687 bool "Wind River PPMC board"
692 select DMA_NONCOHERENT
694 select PCI_GT64XXX_PCI0
696 select SYS_HAS_CPU_MIPS32_R1
697 select SYS_HAS_CPU_MIPS32_R2
698 select SYS_HAS_CPU_MIPS64_R1
699 select SYS_HAS_CPU_NEVADA
700 select SYS_HAS_CPU_RM7000
701 select SYS_SUPPORTS_32BIT_KERNEL
702 select SYS_SUPPORTS_64BIT_KERNEL
703 select SYS_SUPPORTS_BIG_ENDIAN
704 select SYS_SUPPORTS_LITTLE_ENDIAN
706 This enables support for the Wind River MIPS32 4KC PPMC evaluation
707 board, which is based on GT64120 bridge chip.
709 config CAVIUM_OCTEON_SIMULATOR
710 bool "Cavium Networks Octeon Simulator"
712 select 64BIT_PHYS_ADDR
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_HIGHMEM
717 select SYS_SUPPORTS_HOTPLUG_CPU
718 select SYS_HAS_CPU_CAVIUM_OCTEON
721 The Octeon simulator is software performance model of the Cavium
722 Octeon Processor. It supports simulating Octeon processors on x86
725 config CAVIUM_OCTEON_REFERENCE_BOARD
726 bool "Cavium Networks Octeon reference board"
728 select 64BIT_PHYS_ADDR
730 select SYS_SUPPORTS_64BIT_KERNEL
731 select SYS_SUPPORTS_BIG_ENDIAN
732 select SYS_SUPPORTS_HIGHMEM
733 select SYS_SUPPORTS_HOTPLUG_CPU
734 select SYS_HAS_EARLY_PRINTK
735 select SYS_HAS_CPU_CAVIUM_OCTEON
738 select ARCH_SUPPORTS_MSI
740 select USB_ARCH_HAS_OHCI
741 select USB_ARCH_HAS_EHCI
744 This option supports all of the Octeon reference boards from Cavium
745 Networks. It builds a kernel that dynamically determines the Octeon
746 CPU type and supports all known board reference implementations.
747 Some of the supported boards are:
754 Say Y here for most Octeon reference boards.
757 bool "Netlogic XLR/XLS based systems"
758 depends on EXPERIMENTAL
762 select SYS_HAS_CPU_XLR
763 select SYS_SUPPORTS_SMP
766 select SYS_SUPPORTS_32BIT_KERNEL
767 select SYS_SUPPORTS_64BIT_KERNEL
768 select 64BIT_PHYS_ADDR
769 select SYS_SUPPORTS_BIG_ENDIAN
770 select SYS_SUPPORTS_HIGHMEM
772 select NR_CPUS_DEFAULT_32
776 select ZONE_DMA if 64BIT
778 select SYS_HAS_EARLY_PRINTK
780 Support for systems based on Netlogic XLR and XLS processors.
781 Say Y here if you have a XLR or XLS based board.
785 source "arch/mips/alchemy/Kconfig"
786 source "arch/mips/ath79/Kconfig"
787 source "arch/mips/bcm47xx/Kconfig"
788 source "arch/mips/bcm63xx/Kconfig"
789 source "arch/mips/jazz/Kconfig"
790 source "arch/mips/jz4740/Kconfig"
791 source "arch/mips/lantiq/Kconfig"
792 source "arch/mips/lasat/Kconfig"
793 source "arch/mips/pmc-sierra/Kconfig"
794 source "arch/mips/powertv/Kconfig"
795 source "arch/mips/sgi-ip27/Kconfig"
796 source "arch/mips/sibyte/Kconfig"
797 source "arch/mips/txx9/Kconfig"
798 source "arch/mips/vr41xx/Kconfig"
799 source "arch/mips/cavium-octeon/Kconfig"
800 source "arch/mips/loongson/Kconfig"
801 source "arch/mips/netlogic/Kconfig"
805 config RWSEM_GENERIC_SPINLOCK
809 config RWSEM_XCHGADD_ALGORITHM
812 config ARCH_HAS_ILOG2_U32
816 config ARCH_HAS_ILOG2_U64
820 config ARCH_SUPPORTS_OPROFILE
822 default y if !MIPS_MT_SMTC
824 config GENERIC_HWEIGHT
828 config GENERIC_CALIBRATE_DELAY
832 config GENERIC_CLOCKEVENTS
836 config GENERIC_CMOS_UPDATE
840 config SCHED_OMIT_FRAME_POINTER
845 # Select some configuration options automatically based on user selections.
850 config ARCH_MAY_HAVE_PC_FDC
899 select ARCH_REQUIRE_GPIOLIB
905 config ARCH_DMA_ADDR_T_64BIT
906 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
911 config DMA_NONCOHERENT
913 select NEED_DMA_MAP_STATE
915 config NEED_DMA_MAP_STATE
918 config SYS_HAS_EARLY_PRINTK
922 bool "Support for hot-pluggable CPUs"
923 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
925 Say Y here to allow turning CPUs off and on. CPUs can be
926 controlled through /sys/devices/system/cpu.
927 (Note: power management support will enable this option
928 automatically on SMP systems. )
929 Say N if you want to disable CPU hotplug.
931 config SYS_SUPPORTS_HOTPLUG_CPU
946 config MIPS_DISABLE_OBSOLETE_IDE
958 config GENERIC_ISA_DMA
960 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
963 config GENERIC_ISA_DMA_SUPPORT_BROKEN
965 select GENERIC_ISA_DMA
977 # Endianess selection. Sufficiently obscure so many users don't know what to
978 # answer,so we try hard to limit the available choices. Also the use of a
979 # choice statement should be more obvious to the user.
982 prompt "Endianess selection"
984 Some MIPS machines can be configured for either little or big endian
985 byte order. These modes require different kernels and a different
986 Linux distribution. In general there is one preferred byteorder for a
987 particular system but some systems are just as commonly used in the
988 one or the other endianness.
990 config CPU_BIG_ENDIAN
992 depends on SYS_SUPPORTS_BIG_ENDIAN
994 config CPU_LITTLE_ENDIAN
996 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1004 config SYS_SUPPORTS_APM_EMULATION
1007 config SYS_SUPPORTS_BIG_ENDIAN
1010 config SYS_SUPPORTS_LITTLE_ENDIAN
1013 config SYS_SUPPORTS_HUGETLBFS
1015 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1042 config MIPS_BOARDS_GEN
1045 config PCI_GT64XXX_PCI0
1048 config NO_EXCEPT_FILL
1053 select SERIAL_RM9000
1059 select DMA_NONCOHERENT
1061 select SWAP_IO_SPACE
1062 select SYS_HAS_CPU_R5500
1063 select SYS_SUPPORTS_32BIT_KERNEL
1064 select SYS_SUPPORTS_64BIT_KERNEL
1065 select SYS_SUPPORTS_BIG_ENDIAN
1072 select DMA_NONCOHERENT
1073 select SYS_HAS_CPU_MIPS32_R2
1074 select SYS_SUPPORTS_32BIT_KERNEL
1075 select SYS_SUPPORTS_LITTLE_ENDIAN
1076 select SYS_SUPPORTS_BIG_ENDIAN
1078 select CPU_MIPSR2_IRQ_VI
1090 select DMA_NONCOHERENT
1092 select SYS_HAS_CPU_MIPS32_R1
1093 select SYS_HAS_EARLY_PRINTK
1094 select SYS_SUPPORTS_32BIT_KERNEL
1097 config SWAP_IO_SPACE
1100 config SERIAL_RM9000
1103 config SGI_HAS_INDYDOG
1115 config SGI_HAS_ZILOG
1118 config SGI_HAS_I8042
1121 config DEFAULT_SGI_PARTITION
1133 config MIPS_L1_CACHE_SHIFT
1135 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1136 default "6" if MIPS_CPU_SCACHE
1137 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1140 config HAVE_STD_PC_SERIAL_PORT
1144 bool "ARC console support"
1145 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1149 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1154 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1163 menu "CPU selection"
1169 config CPU_LOONGSON2E
1171 depends on SYS_HAS_CPU_LOONGSON2E
1172 select CPU_LOONGSON2
1174 The Loongson 2E processor implements the MIPS III instruction set
1175 with many extensions.
1177 It has an internal FPGA northbridge, which is compatible to
1180 config CPU_LOONGSON2F
1182 depends on SYS_HAS_CPU_LOONGSON2F
1183 select CPU_LOONGSON2
1185 select ARCH_REQUIRE_GPIOLIB
1187 The Loongson 2F processor implements the MIPS III instruction set
1188 with many extensions.
1190 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1191 have a similar programming interface with FPGA northbridge used in
1194 config CPU_MIPS32_R1
1195 bool "MIPS32 Release 1"
1196 depends on SYS_HAS_CPU_MIPS32_R1
1197 select CPU_HAS_PREFETCH
1198 select CPU_SUPPORTS_32BIT_KERNEL
1199 select CPU_SUPPORTS_HIGHMEM
1201 Choose this option to build a kernel for release 1 or later of the
1202 MIPS32 architecture. Most modern embedded systems with a 32-bit
1203 MIPS processor are based on a MIPS32 processor. If you know the
1204 specific type of processor in your system, choose those that one
1205 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1206 Release 2 of the MIPS32 architecture is available since several
1207 years so chances are you even have a MIPS32 Release 2 processor
1208 in which case you should choose CPU_MIPS32_R2 instead for better
1211 config CPU_MIPS32_R2
1212 bool "MIPS32 Release 2"
1213 depends on SYS_HAS_CPU_MIPS32_R2
1214 select CPU_HAS_PREFETCH
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1218 Choose this option to build a kernel for release 2 or later of the
1219 MIPS32 architecture. Most modern embedded systems with a 32-bit
1220 MIPS processor are based on a MIPS32 processor. If you know the
1221 specific type of processor in your system, choose those that one
1222 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1224 config CPU_MIPS64_R1
1225 bool "MIPS64 Release 1"
1226 depends on SYS_HAS_CPU_MIPS64_R1
1227 select CPU_HAS_PREFETCH
1228 select CPU_SUPPORTS_32BIT_KERNEL
1229 select CPU_SUPPORTS_64BIT_KERNEL
1230 select CPU_SUPPORTS_HIGHMEM
1231 select CPU_SUPPORTS_HUGEPAGES
1233 Choose this option to build a kernel for release 1 or later of the
1234 MIPS64 architecture. Many modern embedded systems with a 64-bit
1235 MIPS processor are based on a MIPS64 processor. If you know the
1236 specific type of processor in your system, choose those that one
1237 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1238 Release 2 of the MIPS64 architecture is available since several
1239 years so chances are you even have a MIPS64 Release 2 processor
1240 in which case you should choose CPU_MIPS64_R2 instead for better
1243 config CPU_MIPS64_R2
1244 bool "MIPS64 Release 2"
1245 depends on SYS_HAS_CPU_MIPS64_R2
1246 select CPU_HAS_PREFETCH
1247 select CPU_SUPPORTS_32BIT_KERNEL
1248 select CPU_SUPPORTS_64BIT_KERNEL
1249 select CPU_SUPPORTS_HIGHMEM
1250 select CPU_SUPPORTS_HUGEPAGES
1252 Choose this option to build a kernel for release 2 or later of the
1253 MIPS64 architecture. Many modern embedded systems with a 64-bit
1254 MIPS processor are based on a MIPS64 processor. If you know the
1255 specific type of processor in your system, choose those that one
1256 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1260 depends on SYS_HAS_CPU_R3000
1262 select CPU_SUPPORTS_32BIT_KERNEL
1263 select CPU_SUPPORTS_HIGHMEM
1265 Please make sure to pick the right CPU type. Linux/MIPS is not
1266 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1267 *not* work on R4000 machines and vice versa. However, since most
1268 of the supported machines have an R4000 (or similar) CPU, R4x00
1269 might be a safe bet. If the resulting kernel does not work,
1270 try to recompile with R3000.
1274 depends on SYS_HAS_CPU_TX39XX
1275 select CPU_SUPPORTS_32BIT_KERNEL
1279 depends on SYS_HAS_CPU_VR41XX
1280 select CPU_SUPPORTS_32BIT_KERNEL
1281 select CPU_SUPPORTS_64BIT_KERNEL
1283 The options selects support for the NEC VR4100 series of processors.
1284 Only choose this option if you have one of these processors as a
1285 kernel built with this option will not run on any other type of
1286 processor or vice versa.
1290 depends on SYS_HAS_CPU_R4300
1291 select CPU_SUPPORTS_32BIT_KERNEL
1292 select CPU_SUPPORTS_64BIT_KERNEL
1294 MIPS Technologies R4300-series processors.
1298 depends on SYS_HAS_CPU_R4X00
1299 select CPU_SUPPORTS_32BIT_KERNEL
1300 select CPU_SUPPORTS_64BIT_KERNEL
1302 MIPS Technologies R4000-series processors other than 4300, including
1303 the R4000, R4400, R4600, and 4700.
1307 depends on SYS_HAS_CPU_TX49XX
1308 select CPU_HAS_PREFETCH
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1314 depends on SYS_HAS_CPU_R5000
1315 select CPU_SUPPORTS_32BIT_KERNEL
1316 select CPU_SUPPORTS_64BIT_KERNEL
1318 MIPS Technologies R5000-series processors other than the Nevada.
1322 depends on SYS_HAS_CPU_R5432
1323 select CPU_SUPPORTS_32BIT_KERNEL
1324 select CPU_SUPPORTS_64BIT_KERNEL
1328 depends on SYS_HAS_CPU_R5500
1329 select CPU_SUPPORTS_32BIT_KERNEL
1330 select CPU_SUPPORTS_64BIT_KERNEL
1331 select CPU_SUPPORTS_HUGEPAGES
1333 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1338 depends on EXPERIMENTAL
1339 depends on SYS_HAS_CPU_R6000
1340 select CPU_SUPPORTS_32BIT_KERNEL
1342 MIPS Technologies R6000 and R6000A series processors. Note these
1343 processors are extremely rare and the support for them is incomplete.
1347 depends on SYS_HAS_CPU_NEVADA
1348 select CPU_SUPPORTS_32BIT_KERNEL
1349 select CPU_SUPPORTS_64BIT_KERNEL
1351 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1355 depends on EXPERIMENTAL
1356 depends on SYS_HAS_CPU_R8000
1357 select CPU_HAS_PREFETCH
1358 select CPU_SUPPORTS_64BIT_KERNEL
1360 MIPS Technologies R8000 processors. Note these processors are
1361 uncommon and the support for them is incomplete.
1365 depends on SYS_HAS_CPU_R10000
1366 select CPU_HAS_PREFETCH
1367 select CPU_SUPPORTS_32BIT_KERNEL
1368 select CPU_SUPPORTS_64BIT_KERNEL
1369 select CPU_SUPPORTS_HIGHMEM
1371 MIPS Technologies R10000-series processors.
1375 depends on SYS_HAS_CPU_RM7000
1376 select CPU_HAS_PREFETCH
1377 select CPU_SUPPORTS_32BIT_KERNEL
1378 select CPU_SUPPORTS_64BIT_KERNEL
1379 select CPU_SUPPORTS_HIGHMEM
1383 depends on SYS_HAS_CPU_RM9000
1384 select CPU_HAS_PREFETCH
1385 select CPU_SUPPORTS_32BIT_KERNEL
1386 select CPU_SUPPORTS_64BIT_KERNEL
1387 select CPU_SUPPORTS_HIGHMEM
1388 select WEAK_ORDERING
1392 depends on SYS_HAS_CPU_SB1
1393 select CPU_SUPPORTS_32BIT_KERNEL
1394 select CPU_SUPPORTS_64BIT_KERNEL
1395 select CPU_SUPPORTS_HIGHMEM
1396 select WEAK_ORDERING
1398 config CPU_CAVIUM_OCTEON
1399 bool "Cavium Octeon processor"
1400 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1401 select CPU_HAS_PREFETCH
1402 select CPU_SUPPORTS_64BIT_KERNEL
1403 select SYS_SUPPORTS_SMP
1404 select NR_CPUS_DEFAULT_16
1405 select WEAK_ORDERING
1406 select CPU_SUPPORTS_HIGHMEM
1407 select CPU_SUPPORTS_HUGEPAGES
1409 The Cavium Octeon processor is a highly integrated chip containing
1410 many ethernet hardware widgets for networking tasks. The processor
1411 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1412 Full details can be found at http://www.caviumnetworks.com.
1414 config CPU_BMIPS3300
1416 depends on SYS_HAS_CPU_BMIPS3300
1417 select DMA_NONCOHERENT
1419 select SWAP_IO_SPACE
1420 select SYS_SUPPORTS_32BIT_KERNEL
1421 select WEAK_ORDERING
1423 Broadcom BMIPS3300 processors.
1425 config CPU_BMIPS4350
1427 depends on SYS_HAS_CPU_BMIPS4350
1428 select CPU_SUPPORTS_32BIT_KERNEL
1429 select DMA_NONCOHERENT
1431 select SWAP_IO_SPACE
1432 select SYS_SUPPORTS_SMP
1433 select SYS_SUPPORTS_HOTPLUG_CPU
1434 select WEAK_ORDERING
1436 Broadcom BMIPS4350 ("VIPER") processors.
1438 config CPU_BMIPS4380
1440 depends on SYS_HAS_CPU_BMIPS4380
1441 select CPU_SUPPORTS_32BIT_KERNEL
1442 select DMA_NONCOHERENT
1444 select SWAP_IO_SPACE
1445 select SYS_SUPPORTS_SMP
1446 select SYS_SUPPORTS_HOTPLUG_CPU
1447 select WEAK_ORDERING
1449 Broadcom BMIPS4380 processors.
1451 config CPU_BMIPS5000
1453 depends on SYS_HAS_CPU_BMIPS5000
1454 select CPU_SUPPORTS_32BIT_KERNEL
1455 select CPU_SUPPORTS_HIGHMEM
1456 select DMA_NONCOHERENT
1458 select SWAP_IO_SPACE
1459 select SYS_SUPPORTS_SMP
1460 select SYS_SUPPORTS_HOTPLUG_CPU
1461 select WEAK_ORDERING
1463 Broadcom BMIPS5000 processors.
1466 bool "Netlogic XLR SoC"
1467 depends on SYS_HAS_CPU_XLR
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_64BIT_KERNEL
1470 select CPU_SUPPORTS_HIGHMEM
1471 select WEAK_ORDERING
1472 select WEAK_REORDERING_BEYOND_LLSC
1473 select CPU_SUPPORTS_HUGEPAGES
1475 Netlogic Microsystems XLR/XLS processors.
1479 config CPU_NOP_WORKAROUNDS
1482 config CPU_JUMP_WORKAROUNDS
1485 config CPU_LOONGSON2F_WORKAROUNDS
1486 bool "Loongson 2F Workarounds"
1488 select CPU_NOP_WORKAROUNDS
1489 select CPU_JUMP_WORKAROUNDS
1491 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1492 require workarounds. Without workarounds the system may hang
1493 unexpectedly. For more information please refer to the gas
1494 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1496 Loongson 2F03 and later have fixed these issues and no workarounds
1497 are needed. The workarounds have no significant side effect on them
1498 but may decrease the performance of the system so this option should
1499 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1502 If unsure, please say Y.
1503 endif # CPU_LOONGSON2F
1505 config SYS_SUPPORTS_ZBOOT
1507 select HAVE_KERNEL_GZIP
1508 select HAVE_KERNEL_BZIP2
1509 select HAVE_KERNEL_LZMA
1510 select HAVE_KERNEL_LZO
1512 config SYS_SUPPORTS_ZBOOT_UART16550
1514 select SYS_SUPPORTS_ZBOOT
1516 config CPU_LOONGSON2
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1522 config SYS_HAS_CPU_LOONGSON2E
1525 config SYS_HAS_CPU_LOONGSON2F
1527 select CPU_SUPPORTS_CPUFREQ
1528 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1529 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1531 config SYS_HAS_CPU_MIPS32_R1
1534 config SYS_HAS_CPU_MIPS32_R2
1537 config SYS_HAS_CPU_MIPS64_R1
1540 config SYS_HAS_CPU_MIPS64_R2
1543 config SYS_HAS_CPU_R3000
1546 config SYS_HAS_CPU_TX39XX
1549 config SYS_HAS_CPU_VR41XX
1552 config SYS_HAS_CPU_R4300
1555 config SYS_HAS_CPU_R4X00
1558 config SYS_HAS_CPU_TX49XX
1561 config SYS_HAS_CPU_R5000
1564 config SYS_HAS_CPU_R5432
1567 config SYS_HAS_CPU_R5500
1570 config SYS_HAS_CPU_R6000
1573 config SYS_HAS_CPU_NEVADA
1576 config SYS_HAS_CPU_R8000
1579 config SYS_HAS_CPU_R10000
1582 config SYS_HAS_CPU_RM7000
1585 config SYS_HAS_CPU_RM9000
1588 config SYS_HAS_CPU_SB1
1591 config SYS_HAS_CPU_CAVIUM_OCTEON
1594 config SYS_HAS_CPU_BMIPS3300
1597 config SYS_HAS_CPU_BMIPS4350
1600 config SYS_HAS_CPU_BMIPS4380
1603 config SYS_HAS_CPU_BMIPS5000
1606 config SYS_HAS_CPU_XLR
1610 # CPU may reorder R->R, R->W, W->R, W->W
1611 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1613 config WEAK_ORDERING
1617 # CPU may reorder reads and writes beyond LL/SC
1618 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1620 config WEAK_REORDERING_BEYOND_LLSC
1625 # These two indicate any level of the MIPS32 and MIPS64 architecture
1629 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1633 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1636 # These two indicate the revision of the architecture, either Release 1 or Release 2
1640 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1644 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1646 config SYS_SUPPORTS_32BIT_KERNEL
1648 config SYS_SUPPORTS_64BIT_KERNEL
1650 config CPU_SUPPORTS_32BIT_KERNEL
1652 config CPU_SUPPORTS_64BIT_KERNEL
1654 config CPU_SUPPORTS_CPUFREQ
1656 config CPU_SUPPORTS_ADDRWINCFG
1658 config CPU_SUPPORTS_HUGEPAGES
1660 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1662 config MIPS_PGD_C0_CONTEXT
1664 default y if 64BIT && CPU_MIPSR2
1667 # Set to y for ptrace access to watch registers.
1669 config HARDWARE_WATCHPOINTS
1671 default y if CPU_MIPSR1 || CPU_MIPSR2
1677 prompt "Kernel code model"
1679 You should only select this option if you have a workload that
1680 actually benefits from 64-bit processing or if your machine has
1681 large memory. You will only be presented a single option in this
1682 menu if your system does not support both 32-bit and 64-bit kernels.
1685 bool "32-bit kernel"
1686 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1689 Select this option if you want to build a 32-bit kernel.
1691 bool "64-bit kernel"
1692 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1693 select HAVE_SYSCALL_WRAPPERS
1695 Select this option if you want to build a 64-bit kernel.
1700 prompt "Kernel page size"
1701 default PAGE_SIZE_4KB
1703 config PAGE_SIZE_4KB
1705 depends on !CPU_LOONGSON2
1707 This option select the standard 4kB Linux page size. On some
1708 R3000-family processors this is the only available page size. Using
1709 4kB page size will minimize memory consumption and is therefore
1710 recommended for low memory systems.
1712 config PAGE_SIZE_8KB
1714 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1716 Using 8kB page size will result in higher performance kernel at
1717 the price of higher memory consumption. This option is available
1718 only on R8000 and cnMIPS processors. Note that you will need a
1719 suitable Linux distribution to support this.
1721 config PAGE_SIZE_16KB
1723 depends on !CPU_R3000 && !CPU_TX39XX
1725 Using 16kB page size will result in higher performance kernel at
1726 the price of higher memory consumption. This option is available on
1727 all non-R3000 family processors. Note that you will need a suitable
1728 Linux distribution to support this.
1730 config PAGE_SIZE_32KB
1732 depends on CPU_CAVIUM_OCTEON
1734 Using 32kB page size will result in higher performance kernel at
1735 the price of higher memory consumption. This option is available
1736 only on cnMIPS cores. Note that you will need a suitable Linux
1737 distribution to support this.
1739 config PAGE_SIZE_64KB
1741 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1743 Using 64kB page size will result in higher performance kernel at
1744 the price of higher memory consumption. This option is available on
1745 all non-R3000 family processor. Not that at the time of this
1746 writing this option is still high experimental.
1750 config FORCE_MAX_ZONEORDER
1751 int "Maximum zone order"
1752 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1753 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1754 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1755 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1759 The kernel memory allocator divides physically contiguous memory
1760 blocks into "zones", where each zone is a power of two number of
1761 pages. This option selects the largest power of two that the kernel
1762 keeps in the memory allocator. If you need to allocate very large
1763 blocks of physically contiguous memory, then you may need to
1764 increase this value.
1766 This config option is actually maximum order plus one. For example,
1767 a value of 11 means that the largest free memory block is 2^10 pages.
1769 The page size is not necessarily 4KB. Keep this in mind
1770 when choosing a value for this option.
1775 config IP22_CPU_SCACHE
1780 # Support for a MIPS32 / MIPS64 style S-caches
1782 config MIPS_CPU_SCACHE
1786 config R5000_CPU_SCACHE
1790 config RM7000_CPU_SCACHE
1794 config SIBYTE_DMA_PAGEOPS
1795 bool "Use DMA to clear/copy pages"
1798 Instead of using the CPU to zero and copy pages, use a Data Mover
1799 channel. These DMA channels are otherwise unused by the standard
1800 SiByte Linux port. Seems to give a small performance benefit.
1802 config CPU_HAS_PREFETCH
1806 prompt "MIPS MT options"
1808 config MIPS_MT_DISABLED
1809 bool "Disable multithreading support."
1811 Use this option if your workload can't take advantage of
1812 MIPS hardware multithreading support. On systems that don't have
1813 the option of an MT-enabled processor this option will be the only
1814 option in this menu.
1817 bool "Use 1 TC on each available VPE for SMP"
1818 depends on SYS_SUPPORTS_MULTITHREADING
1819 select CPU_MIPSR2_IRQ_VI
1820 select CPU_MIPSR2_IRQ_EI
1822 select NR_CPUS_DEFAULT_2
1824 select SYS_SUPPORTS_SCHED_SMT if SMP
1825 select SYS_SUPPORTS_SMP
1828 This is a kernel model which is known a VSMP but lately has been
1829 marketesed into SMVP.
1830 Virtual SMP uses the processor's VPEs to implement virtual
1831 processors. In currently available configuration of the 34K processor
1832 this allows for a dual processor. Both processors will share the same
1833 primary caches; each will obtain the half of the TLB for it's own
1834 exclusive use. For a layman this model can be described as similar to
1835 what Intel calls Hyperthreading.
1837 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1840 bool "SMTC: Use all TCs on all VPEs for SMP"
1841 depends on CPU_MIPS32_R2
1842 #depends on CPU_MIPS64_R2 # once there is hardware ...
1843 depends on SYS_SUPPORTS_MULTITHREADING
1844 select CPU_MIPSR2_IRQ_VI
1845 select CPU_MIPSR2_IRQ_EI
1847 select NR_CPUS_DEFAULT_8
1849 select SYS_SUPPORTS_SMP
1852 This is a kernel model which is known a SMTC or lately has been
1853 marketesed into SMVP.
1854 is presenting the available TC's of the core as processors to Linux.
1855 On currently available 34K processors this means a Linux system will
1856 see up to 5 processors. The implementation of the SMTC kernel differs
1857 significantly from VSMP and cannot efficiently coexist in the same
1858 kernel binary so the choice between VSMP and SMTC is a compile time
1861 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1869 bool "SMT (multithreading) scheduler support"
1870 depends on SYS_SUPPORTS_SCHED_SMT
1873 SMT scheduler support improves the CPU scheduler's decision making
1874 when dealing with MIPS MT enabled cores at a cost of slightly
1875 increased overhead in some places. If unsure say N here.
1877 config SYS_SUPPORTS_SCHED_SMT
1881 config SYS_SUPPORTS_MULTITHREADING
1884 config MIPS_MT_FPAFF
1885 bool "Dynamic FPU affinity for FP-intensive threads"
1887 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1889 config MIPS_VPE_LOADER
1890 bool "VPE loader support."
1891 depends on SYS_SUPPORTS_MULTITHREADING
1892 select CPU_MIPSR2_IRQ_VI
1893 select CPU_MIPSR2_IRQ_EI
1896 Includes a loader for loading an elf relocatable object
1897 onto another VPE and running it.
1899 config MIPS_MT_SMTC_IM_BACKSTOP
1900 bool "Use per-TC register bits as backstop for inhibited IM bits"
1901 depends on MIPS_MT_SMTC
1904 To support multiple TC microthreads acting as "CPUs" within
1905 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1906 during interrupt handling. To support legacy drivers and interrupt
1907 controller management code, SMTC has a "backstop" to track and
1908 if necessary restore the interrupt mask. This has some performance
1909 impact on interrupt service overhead.
1911 config MIPS_MT_SMTC_IRQAFF
1912 bool "Support IRQ affinity API"
1913 depends on MIPS_MT_SMTC
1916 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1917 for SMTC Linux kernel. Requires platform support, of which
1918 an example can be found in the MIPS kernel i8259 and Malta
1919 platform code. Adds some overhead to interrupt dispatch, and
1920 should be used only if you know what you are doing.
1922 config MIPS_VPE_LOADER_TOM
1923 bool "Load VPE program into memory hidden from linux"
1924 depends on MIPS_VPE_LOADER
1927 The loader can use memory that is present but has been hidden from
1928 Linux using the kernel command line option "mem=xxMB". It's up to
1929 you to ensure the amount you put in the option and the space your
1930 program requires is less or equal to the amount physically present.
1932 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1933 config MIPS_VPE_APSP_API
1934 bool "Enable support for AP/SP API (RTLX)"
1935 depends on MIPS_VPE_LOADER
1938 config MIPS_APSP_KSPD
1940 depends on MIPS_VPE_APSP_API
1943 KSPD is a kernel daemon that accepts syscall requests from the SP
1944 side, actions them and returns the results. It also handles the
1945 "exit" syscall notifying other kernel modules the SP program is
1946 exiting. You probably want to say yes here.
1949 bool "MIPS CMP framework support"
1950 depends on SYS_SUPPORTS_MIPS_CMP
1952 select SYS_SUPPORTS_SMP
1953 select SYS_SUPPORTS_SCHED_SMT if SMP
1954 select WEAK_ORDERING
1957 This is a placeholder option for the GCMP work. It will need to
1958 be handled differently...
1960 config SB1_PASS_1_WORKAROUNDS
1962 depends on CPU_SB1_PASS_1
1965 config SB1_PASS_2_WORKAROUNDS
1967 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1970 config SB1_PASS_2_1_WORKAROUNDS
1972 depends on CPU_SB1 && CPU_SB1_PASS_2
1975 config 64BIT_PHYS_ADDR
1978 config ARCH_PHYS_ADDR_T_64BIT
1979 def_bool 64BIT_PHYS_ADDR
1981 config CPU_HAS_SMARTMIPS
1982 depends on SYS_SUPPORTS_SMARTMIPS
1983 bool "Support for the SmartMIPS ASE"
1985 SmartMIPS is a extension of the MIPS32 architecture aimed at
1986 increased security at both hardware and software level for
1987 smartcards. Enabling this option will allow proper use of the
1988 SmartMIPS instructions by Linux applications. However a kernel with
1989 this option will not work on a MIPS core without SmartMIPS core. If
1990 you don't know you probably don't have SmartMIPS and should say N
1997 # Vectored interrupt mode is an R2 feature
1999 config CPU_MIPSR2_IRQ_VI
2003 # Extended interrupt mode is an R2 feature
2005 config CPU_MIPSR2_IRQ_EI
2010 depends on !CPU_R3000
2013 config GENERIC_CLOCKEVENTS_BROADCAST
2019 config CPU_DADDI_WORKAROUNDS
2022 config CPU_R4000_WORKAROUNDS
2024 select CPU_R4400_WORKAROUNDS
2026 config CPU_R4400_WORKAROUNDS
2030 # - Highmem only makes sense for the 32-bit kernel.
2031 # - The current highmem code will only work properly on physically indexed
2032 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2033 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2034 # moment we protect the user and offer the highmem option only on machines
2035 # where it's known to be safe. This will not offer highmem on a few systems
2036 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2037 # indexed CPUs but we're playing safe.
2038 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2039 # know they might have memory configurations that could make use of highmem
2043 bool "High Memory Support"
2044 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2046 config CPU_SUPPORTS_HIGHMEM
2049 config SYS_SUPPORTS_HIGHMEM
2052 config SYS_SUPPORTS_SMARTMIPS
2055 config ARCH_FLATMEM_ENABLE
2057 depends on !NUMA && !CPU_LOONGSON2
2059 config ARCH_DISCONTIGMEM_ENABLE
2061 default y if SGI_IP27
2063 Say Y to support efficient handling of discontiguous physical memory,
2064 for architectures which are either NUMA (Non-Uniform Memory Access)
2065 or have huge holes in the physical address space for other reasons.
2066 See <file:Documentation/vm/numa> for more.
2068 config ARCH_POPULATES_NODE_MAP
2071 config ARCH_SPARSEMEM_ENABLE
2073 select SPARSEMEM_STATIC
2077 depends on SYS_SUPPORTS_NUMA
2079 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2080 Access). This option improves performance on systems with more
2081 than two nodes; on two node systems it is generally better to
2082 leave it disabled; on single node systems disable this option
2085 config SYS_SUPPORTS_NUMA
2091 depends on NEED_MULTIPLE_NODES
2093 config HW_PERF_EVENTS
2094 bool "Enable hardware performance counter support for perf events"
2095 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2098 Enable hardware performance counter support for perf events. If
2099 disabled, perf events will use software events only.
2104 bool "Multi-Processing support"
2105 depends on SYS_SUPPORTS_SMP
2107 select USE_GENERIC_SMP_HELPERS
2109 This enables support for systems with more than one CPU. If you have
2110 a system with only one CPU, like most personal computers, say N. If
2111 you have a system with more than one CPU, say Y.
2113 If you say N here, the kernel will run on single and multiprocessor
2114 machines, but will use only one CPU of a multiprocessor machine. If
2115 you say Y here, the kernel will run on many, but not all,
2116 singleprocessor machines. On a singleprocessor machine, the kernel
2117 will run faster if you say N here.
2119 People using multiprocessor machines who say Y here should also say
2120 Y to "Enhanced Real Time Clock Support", below.
2122 See also the SMP-HOWTO available at
2123 <http://www.tldp.org/docs.html#howto>.
2125 If you don't know what to do here, say N.
2130 config SYS_SUPPORTS_MIPS_CMP
2133 config SYS_SUPPORTS_SMP
2136 config NR_CPUS_DEFAULT_1
2139 config NR_CPUS_DEFAULT_2
2142 config NR_CPUS_DEFAULT_4
2145 config NR_CPUS_DEFAULT_8
2148 config NR_CPUS_DEFAULT_16
2151 config NR_CPUS_DEFAULT_32
2154 config NR_CPUS_DEFAULT_64
2158 int "Maximum number of CPUs (2-64)"
2159 range 1 64 if NR_CPUS_DEFAULT_1
2161 default "1" if NR_CPUS_DEFAULT_1
2162 default "2" if NR_CPUS_DEFAULT_2
2163 default "4" if NR_CPUS_DEFAULT_4
2164 default "8" if NR_CPUS_DEFAULT_8
2165 default "16" if NR_CPUS_DEFAULT_16
2166 default "32" if NR_CPUS_DEFAULT_32
2167 default "64" if NR_CPUS_DEFAULT_64
2169 This allows you to specify the maximum number of CPUs which this
2170 kernel will support. The maximum supported value is 32 for 32-bit
2171 kernel and 64 for 64-bit kernels; the minimum value which makes
2172 sense is 1 for Qemu (useful only for kernel debugging purposes)
2173 and 2 for all others.
2175 This is purely to save memory - each supported CPU adds
2176 approximately eight kilobytes to the kernel image. For best
2177 performance should round up your number of processors to the next
2180 source "kernel/time/Kconfig"
2183 # Timer Interrupt Frequency Configuration
2187 prompt "Timer frequency"
2190 Allows the configuration of the timer frequency.
2193 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2196 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2199 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2202 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2205 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2208 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2211 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2215 config SYS_SUPPORTS_48HZ
2218 config SYS_SUPPORTS_100HZ
2221 config SYS_SUPPORTS_128HZ
2224 config SYS_SUPPORTS_250HZ
2227 config SYS_SUPPORTS_256HZ
2230 config SYS_SUPPORTS_1000HZ
2233 config SYS_SUPPORTS_1024HZ
2236 config SYS_SUPPORTS_ARBIT_HZ
2238 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2239 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2240 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2241 !SYS_SUPPORTS_1024HZ
2246 default 100 if HZ_100
2247 default 128 if HZ_128
2248 default 250 if HZ_250
2249 default 256 if HZ_256
2250 default 1000 if HZ_1000
2251 default 1024 if HZ_1024
2253 source "kernel/Kconfig.preempt"
2255 config MIPS_INSANE_LARGE
2256 bool "Support for large 64-bit configurations"
2257 depends on CPU_R10000 && 64BIT
2259 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2260 previous 64-bit processors which only supported 40 bit / 1TB. If you
2261 need processes of more than 1TB virtual address space, say Y here.
2262 This will result in additional memory usage, so it is not
2263 recommended for normal users.
2266 bool "Kexec system call (EXPERIMENTAL)"
2267 depends on EXPERIMENTAL
2269 kexec is a system call that implements the ability to shutdown your
2270 current kernel, and to start another kernel. It is like a reboot
2271 but it is independent of the system firmware. And like a reboot
2272 you can start any kernel with it, not just Linux.
2274 The name comes from the similarity to the exec system call.
2276 It is an ongoing process to be certain the hardware in a machine
2277 is properly shutdown, so do not be surprised if this code does not
2278 initially work for you. It may help to enable device hotplugging
2279 support. As of this writing the exact hardware interface is
2280 strongly in flux, so no good recommendation can be made.
2283 bool "Enable seccomp to safely compute untrusted bytecode"
2287 This kernel feature is useful for number crunching applications
2288 that may need to compute untrusted bytecode during their
2289 execution. By using pipes or other transports made available to
2290 the process as file descriptors supporting the read/write
2291 syscalls, it's possible to isolate those applications in
2292 their own address space using seccomp. Once seccomp is
2293 enabled via /proc/<pid>/seccomp, it cannot be disabled
2294 and the task is only allowed to execute a few safe syscalls
2295 defined by each seccomp mode.
2297 If unsure, say Y. Only embedded should say N here.
2300 bool "Flattened Device Tree support"
2302 select OF_EARLY_FLATTREE
2304 Include support for flattened device tree machine descriptions.
2308 config LOCKDEP_SUPPORT
2312 config STACKTRACE_SUPPORT
2316 source "init/Kconfig"
2318 source "kernel/Kconfig.freezer"
2320 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2328 bool "Support for PCI controller"
2329 depends on HW_HAS_PCI
2332 Find out whether you have a PCI motherboard. PCI is the name of a
2333 bus system, i.e. the way the CPU talks to the other stuff inside
2334 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2340 source "drivers/pci/Kconfig"
2343 # ISA support is now enabled via select. Too many systems still have the one
2344 # or other ISA chip on the board that users don't know about so don't expect
2345 # users to choose the right thing ...
2352 depends on HW_HAS_EISA
2354 select GENERIC_ISA_DMA
2356 The Extended Industry Standard Architecture (EISA) bus was
2357 developed as an open alternative to the IBM MicroChannel bus.
2359 The EISA bus provided some of the features of the IBM MicroChannel
2360 bus while maintaining backward compatibility with cards made for
2361 the older ISA bus. The EISA bus saw limited use between 1988 and
2362 1995 when it was made obsolete by the PCI bus.
2364 Say Y here if you are building a kernel for an EISA-based machine.
2368 source "drivers/eisa/Kconfig"
2371 bool "TURBOchannel support"
2372 depends on MACH_DECSTATION
2374 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2375 processors. TURBOchannel programming specifications are available
2377 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2379 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2380 Linux driver support status is documented at:
2381 <http://www.linux-mips.org/wiki/DECstation>
2384 # bool "Access.Bus support"
2395 select MIPS_EXTERNAL_TIMER
2400 source "drivers/pcmcia/Kconfig"
2402 source "drivers/pci/hotplug/Kconfig"
2405 bool "RapidIO support"
2409 If you say Y here, the kernel will include drivers and
2410 infrastructure code to support RapidIO interconnect devices.
2412 source "drivers/rapidio/Kconfig"
2416 menu "Executable file formats"
2418 source "fs/Kconfig.binfmt"
2423 config MIPS32_COMPAT
2424 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2427 Select this option if you want Linux/MIPS 32-bit binary
2428 compatibility. Since all software available for Linux/MIPS is
2429 currently 32-bit you should say Y here.
2433 depends on MIPS32_COMPAT
2436 config SYSVIPC_COMPAT
2438 depends on COMPAT && SYSVIPC
2442 bool "Kernel support for o32 binaries"
2443 depends on MIPS32_COMPAT
2445 Select this option if you want to run o32 binaries. These are pure
2446 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2447 existing binaries are in this format.
2452 bool "Kernel support for n32 binaries"
2453 depends on MIPS32_COMPAT
2455 Select this option if you want to run n32 binaries. These are
2456 64-bit binaries using 32-bit quantities for addressing and certain
2457 data that would normally be 64-bit. They are used in special
2464 default y if MIPS32_O32 || MIPS32_N32
2468 menu "Power management options"
2470 config ARCH_HIBERNATION_POSSIBLE
2472 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2474 config ARCH_SUSPEND_POSSIBLE
2476 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2478 source "kernel/power/Kconfig"
2482 source "arch/mips/kernel/cpufreq/Kconfig"
2484 source "net/Kconfig"
2486 source "drivers/Kconfig"
2490 source "arch/mips/Kconfig.debug"
2492 source "security/Kconfig"
2494 source "crypto/Kconfig"
2496 source "lib/Kconfig"