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
28 menu "Machine selection"
38 bool "Alchemy processor based machines"
39 select 64BIT_PHYS_ADDR
43 select SYS_HAS_CPU_MIPS32_R1
44 select SYS_SUPPORTS_32BIT_KERNEL
45 select SYS_SUPPORTS_APM_EMULATION
47 select ARCH_WANT_OPTIONAL_GPIOLIB
48 select SYS_SUPPORTS_ZBOOT
51 bool "Texas Instruments AR7"
53 select DMA_NONCOHERENT
59 select SYS_HAS_CPU_MIPS32_R1
60 select SYS_HAS_EARLY_PRINTK
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_LITTLE_ENDIAN
63 select SYS_SUPPORTS_ZBOOT_UART16550
64 select ARCH_REQUIRE_GPIOLIB
68 Support for the Texas Instruments AR7 System-on-a-Chip
69 family: TNETD7100, 7200 and 7300.
72 bool "Atheros AR71XX/AR724X/AR913X based boards"
73 select ARCH_REQUIRE_GPIOLIB
77 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R2
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_BIG_ENDIAN
85 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
88 bool "Broadcom BCM47XX based boards"
91 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SSB_DRIVER_MIPS
99 select SSB_DRIVER_EXTIF
101 select SSB_B43_PCI_BRIDGE if PCI
102 select SSB_PCICORE_HOSTMODE if PCI
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
217 bool "Lantiq based platforms"
218 select DMA_NONCOHERENT
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_MULTITHREADING
227 select SYS_HAS_EARLY_PRINTK
228 select ARCH_REQUIRE_GPIOLIB
235 bool "LASAT Networks platforms"
238 select DMA_NONCOHERENT
239 select SYS_HAS_EARLY_PRINTK
242 select PCI_GT64XXX_PCI0
244 select R5000_CPU_SCACHE
245 select SYS_HAS_CPU_R5000
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
248 select SYS_SUPPORTS_LITTLE_ENDIAN
251 bool "Loongson family of machines"
252 select SYS_SUPPORTS_ZBOOT
254 This enables the support of Loongson family of machines.
256 Loongson is a family of general-purpose MIPS-compatible CPUs.
257 developed at Institute of Computing Technology (ICT),
258 Chinese Academy of Sciences (CAS) in the People's Republic
259 of China. The chief architect is Professor Weiwu Hu.
262 bool "MIPS Malta board"
263 select ARCH_MAY_HAVE_PC_FDC
268 select DMA_NONCOHERENT
269 select GENERIC_ISA_DMA
270 select HAVE_PCSPKR_PLATFORM
276 select MIPS_BOARDS_GEN
278 select MIPS_CPU_SCACHE
279 select PCI_GT64XXX_PCI0
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_HAS_CPU_MIPS32_R2
284 select SYS_HAS_CPU_MIPS64_R1
285 select SYS_HAS_CPU_NEVADA
286 select SYS_HAS_CPU_RM7000
287 select SYS_HAS_EARLY_PRINTK
288 select SYS_SUPPORTS_32BIT_KERNEL
289 select SYS_SUPPORTS_64BIT_KERNEL
290 select SYS_SUPPORTS_BIG_ENDIAN
291 select SYS_SUPPORTS_LITTLE_ENDIAN
292 select SYS_SUPPORTS_MIPS_CMP
293 select SYS_SUPPORTS_MULTITHREADING
294 select SYS_SUPPORTS_SMARTMIPS
295 select SYS_SUPPORTS_ZBOOT
297 This enables support for the MIPS Technologies Malta evaluation
301 bool 'MIPS simulator (MIPSsim)'
304 select DMA_NONCOHERENT
305 select SYS_HAS_EARLY_PRINTK
308 select SYS_HAS_CPU_MIPS32_R1
309 select SYS_HAS_CPU_MIPS32_R2
310 select SYS_HAS_EARLY_PRINTK
311 select SYS_SUPPORTS_32BIT_KERNEL
312 select SYS_SUPPORTS_BIG_ENDIAN
313 select SYS_SUPPORTS_MULTITHREADING
314 select SYS_SUPPORTS_LITTLE_ENDIAN
316 This option enables support for MIPS Technologies MIPSsim software
320 bool "NEC EMMA2RH Mark-eins board"
324 This enables support for the NEC Electronics Mark-eins boards.
327 bool "NEC VR4100 series based machines"
330 select SYS_HAS_CPU_VR41XX
331 select ARCH_REQUIRE_GPIOLIB
334 bool "NXP STB220 board"
337 Support for NXP Semiconductors STB220 Development Board.
344 Support for NXP Semiconductors STB225 Development Board.
347 bool "NXP PNX8550 based JBS board"
349 select SYS_SUPPORTS_LITTLE_ENDIAN
351 config PNX8550_STB810
352 bool "NXP PNX8550 based STB810 board"
354 select SYS_SUPPORTS_LITTLE_ENDIAN
357 bool "PMC-Sierra MSP chipsets"
358 depends on EXPERIMENTAL
361 select DMA_NONCOHERENT
363 select NO_EXCEPT_FILL
365 select SYS_HAS_CPU_MIPS32_R1
366 select SYS_HAS_CPU_MIPS32_R2
367 select SYS_SUPPORTS_32BIT_KERNEL
368 select SYS_SUPPORTS_BIG_ENDIAN
371 select SERIAL_8250_CONSOLE
373 This adds support for the PMC-Sierra family of Multi-Service
374 Processor System-On-A-Chips. These parts include a number
375 of integrated peripherals, interfaces and DSPs in addition to
376 a variety of MIPS cores.
379 bool "PMC-Sierra Yosemite eval board"
388 select SYS_HAS_CPU_RM9000
389 select SYS_HAS_EARLY_PRINTK
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_64BIT_KERNEL
392 select SYS_SUPPORTS_BIG_ENDIAN
393 select SYS_SUPPORTS_HIGHMEM
394 select SYS_SUPPORTS_SMP
396 Yosemite is an evaluation board for the RM9000x2 processor
397 manufactured by PMC-Sierra.
403 select CPU_MIPSR2_IRQ_VI
404 select CPU_MIPSR2_IRQ_EI
406 select DMA_NONCOHERENT
408 select SYS_HAS_EARLY_PRINTK
409 select SYS_HAS_CPU_MIPS32_R2
410 select SYS_SUPPORTS_32BIT_KERNEL
411 select SYS_SUPPORTS_BIG_ENDIAN
412 select SYS_SUPPORTS_HIGHMEM
413 select USB_OHCI_LITTLE_ENDIAN
415 This enables support for the Cisco PowerTV Platform.
418 bool "SGI IP22 (Indy/Indigo2)"
424 select DEFAULT_SGI_PARTITION
425 select DMA_NONCOHERENT
429 select IP22_CPU_SCACHE
431 select GENERIC_ISA_DMA_SUPPORT_BROKEN
433 select SGI_HAS_INDYDOG
439 select SYS_HAS_CPU_R4X00
440 select SYS_HAS_CPU_R5000
442 # Disable EARLY_PRINTK for now since it leads to overwritten prom
443 # memory during early boot on some machines.
445 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
446 # for a more details discussion
448 # select SYS_HAS_EARLY_PRINTK
449 select SYS_SUPPORTS_32BIT_KERNEL
450 select SYS_SUPPORTS_64BIT_KERNEL
451 select SYS_SUPPORTS_BIG_ENDIAN
453 This are the SGI Indy, Challenge S and Indigo2, as well as certain
454 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
455 that runs on these, say Y here.
458 bool "SGI IP27 (Origin200/2000)"
462 select DEFAULT_SGI_PARTITION
464 select SYS_HAS_EARLY_PRINTK
466 select NR_CPUS_DEFAULT_64
467 select SYS_HAS_CPU_R10000
468 select SYS_SUPPORTS_64BIT_KERNEL
469 select SYS_SUPPORTS_BIG_ENDIAN
470 select SYS_SUPPORTS_NUMA
471 select SYS_SUPPORTS_SMP
473 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
474 workstations. To compile a Linux kernel that runs on these, say Y
478 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
479 depends on EXPERIMENTAL
485 select DEFAULT_SGI_PARTITION
486 select DMA_NONCOHERENT
487 select GENERIC_ISA_DMA_SUPPORT_BROKEN
493 select SGI_HAS_INDYDOG
499 select SYS_HAS_CPU_R10000
501 # Disable EARLY_PRINTK for now since it leads to overwritten prom
502 # memory during early boot on some machines.
504 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
505 # for a more details discussion
507 # select SYS_HAS_EARLY_PRINTK
508 select SYS_SUPPORTS_64BIT_KERNEL
509 select SYS_SUPPORTS_BIG_ENDIAN
511 This is the SGI Indigo2 with R10000 processor. To compile a Linux
512 kernel that runs on these, say Y here.
521 select DMA_NONCOHERENT
524 select R5000_CPU_SCACHE
525 select RM7000_CPU_SCACHE
526 select SYS_HAS_CPU_R5000
527 select SYS_HAS_CPU_R10000 if BROKEN
528 select SYS_HAS_CPU_RM7000
529 select SYS_HAS_CPU_NEVADA
530 select SYS_SUPPORTS_64BIT_KERNEL
531 select SYS_SUPPORTS_BIG_ENDIAN
533 If you want this kernel to run on SGI O2 workstation, say Y here.
536 bool "Sibyte BCM91120C-CRhine"
537 depends on EXPERIMENTAL
540 select SIBYTE_BCM1120
542 select SYS_HAS_CPU_SB1
543 select SYS_SUPPORTS_BIG_ENDIAN
544 select SYS_SUPPORTS_LITTLE_ENDIAN
547 bool "Sibyte BCM91120x-Carmel"
548 depends on EXPERIMENTAL
551 select SIBYTE_BCM1120
553 select SYS_HAS_CPU_SB1
554 select SYS_SUPPORTS_BIG_ENDIAN
555 select SYS_SUPPORTS_LITTLE_ENDIAN
558 bool "Sibyte BCM91125C-CRhone"
559 depends on EXPERIMENTAL
562 select SIBYTE_BCM1125
564 select SYS_HAS_CPU_SB1
565 select SYS_SUPPORTS_BIG_ENDIAN
566 select SYS_SUPPORTS_HIGHMEM
567 select SYS_SUPPORTS_LITTLE_ENDIAN
570 bool "Sibyte BCM91125E-Rhone"
571 depends on EXPERIMENTAL
574 select SIBYTE_BCM1125H
576 select SYS_HAS_CPU_SB1
577 select SYS_SUPPORTS_BIG_ENDIAN
578 select SYS_SUPPORTS_LITTLE_ENDIAN
581 bool "Sibyte BCM91250A-SWARM"
584 select HAVE_PATA_PLATFORM
585 select NR_CPUS_DEFAULT_2
588 select SYS_HAS_CPU_SB1
589 select SYS_SUPPORTS_BIG_ENDIAN
590 select SYS_SUPPORTS_HIGHMEM
591 select SYS_SUPPORTS_LITTLE_ENDIAN
592 select ZONE_DMA32 if 64BIT
594 config SIBYTE_LITTLESUR
595 bool "Sibyte BCM91250C2-LittleSur"
596 depends on EXPERIMENTAL
599 select HAVE_PATA_PLATFORM
600 select NR_CPUS_DEFAULT_2
603 select SYS_HAS_CPU_SB1
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_HIGHMEM
606 select SYS_SUPPORTS_LITTLE_ENDIAN
608 config SIBYTE_SENTOSA
609 bool "Sibyte BCM91250E-Sentosa"
610 depends on EXPERIMENTAL
613 select NR_CPUS_DEFAULT_2
616 select SYS_HAS_CPU_SB1
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_LITTLE_ENDIAN
621 bool "Sibyte BCM91480B-BigSur"
624 select NR_CPUS_DEFAULT_4
625 select SIBYTE_BCM1x80
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_HIGHMEM
630 select SYS_SUPPORTS_LITTLE_ENDIAN
631 select ZONE_DMA32 if 64BIT
634 bool "SNI RM200/300/400"
635 select ARC if CPU_LITTLE_ENDIAN
636 select ARC32 if CPU_LITTLE_ENDIAN
637 select SNIPROM if CPU_BIG_ENDIAN
638 select ARCH_MAY_HAVE_PC_FDC
642 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
643 select DMA_NONCOHERENT
644 select GENERIC_ISA_DMA
645 select HAVE_PCSPKR_PLATFORM
652 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
653 select SYS_HAS_CPU_R4X00
654 select SYS_HAS_CPU_R5000
655 select SYS_HAS_CPU_R10000
656 select R5000_CPU_SCACHE
657 select SYS_HAS_EARLY_PRINTK
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select SYS_SUPPORTS_HIGHMEM
662 select SYS_SUPPORTS_LITTLE_ENDIAN
664 The SNI RM200/300/400 are MIPS-based machines manufactured by
665 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
666 Technology and now in turn merged with Fujitsu. Say Y here to
667 support this machine type.
670 bool "Toshiba TX39 series based machines"
673 bool "Toshiba TX49 series based machines"
675 config MIKROTIK_RB532
676 bool "Mikrotik RB532 boards"
679 select DMA_NONCOHERENT
682 select SYS_HAS_CPU_MIPS32_R1
683 select SYS_SUPPORTS_32BIT_KERNEL
684 select SYS_SUPPORTS_LITTLE_ENDIAN
687 select ARCH_REQUIRE_GPIOLIB
689 Support the Mikrotik(tm) RouterBoard 532 series,
690 based on the IDT RC32434 SoC.
693 bool "Wind River PPMC board"
698 select DMA_NONCOHERENT
700 select PCI_GT64XXX_PCI0
702 select SYS_HAS_CPU_MIPS32_R1
703 select SYS_HAS_CPU_MIPS32_R2
704 select SYS_HAS_CPU_MIPS64_R1
705 select SYS_HAS_CPU_NEVADA
706 select SYS_HAS_CPU_RM7000
707 select SYS_SUPPORTS_32BIT_KERNEL
708 select SYS_SUPPORTS_64BIT_KERNEL
709 select SYS_SUPPORTS_BIG_ENDIAN
710 select SYS_SUPPORTS_LITTLE_ENDIAN
712 This enables support for the Wind River MIPS32 4KC PPMC evaluation
713 board, which is based on GT64120 bridge chip.
715 config CAVIUM_OCTEON_SIMULATOR
716 bool "Cavium Networks Octeon Simulator"
718 select 64BIT_PHYS_ADDR
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select SYS_SUPPORTS_HIGHMEM
723 select SYS_SUPPORTS_HOTPLUG_CPU
724 select SYS_HAS_CPU_CAVIUM_OCTEON
726 The Octeon simulator is software performance model of the Cavium
727 Octeon Processor. It supports simulating Octeon processors on x86
730 config CAVIUM_OCTEON_REFERENCE_BOARD
731 bool "Cavium Networks Octeon reference board"
733 select 64BIT_PHYS_ADDR
735 select SYS_SUPPORTS_64BIT_KERNEL
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_HIGHMEM
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
748 This option supports all of the Octeon reference boards from Cavium
749 Networks. It builds a kernel that dynamically determines the Octeon
750 CPU type and supports all known board reference implementations.
751 Some of the supported boards are:
758 Say Y here for most Octeon reference boards.
761 bool "Netlogic XLR/XLS based systems"
762 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 ZONE_DMA if 64BIT
782 select SYS_HAS_EARLY_PRINTK
784 Support for systems based on Netlogic XLR and XLS processors.
785 Say Y here if you have a XLR or XLS based board.
789 source "arch/mips/alchemy/Kconfig"
790 source "arch/mips/ath79/Kconfig"
791 source "arch/mips/bcm63xx/Kconfig"
792 source "arch/mips/jazz/Kconfig"
793 source "arch/mips/jz4740/Kconfig"
794 source "arch/mips/lantiq/Kconfig"
795 source "arch/mips/lasat/Kconfig"
796 source "arch/mips/pmc-sierra/Kconfig"
797 source "arch/mips/powertv/Kconfig"
798 source "arch/mips/sgi-ip27/Kconfig"
799 source "arch/mips/sibyte/Kconfig"
800 source "arch/mips/txx9/Kconfig"
801 source "arch/mips/vr41xx/Kconfig"
802 source "arch/mips/cavium-octeon/Kconfig"
803 source "arch/mips/loongson/Kconfig"
804 source "arch/mips/netlogic/Kconfig"
808 config RWSEM_GENERIC_SPINLOCK
812 config RWSEM_XCHGADD_ALGORITHM
815 config ARCH_HAS_ILOG2_U32
819 config ARCH_HAS_ILOG2_U64
823 config GENERIC_HWEIGHT
827 config GENERIC_CALIBRATE_DELAY
831 config GENERIC_CLOCKEVENTS
835 config GENERIC_CMOS_UPDATE
839 config SCHED_OMIT_FRAME_POINTER
844 # Select some configuration options automatically based on user selections.
849 config ARCH_MAY_HAVE_PC_FDC
898 select ARCH_REQUIRE_GPIOLIB
904 config ARCH_DMA_ADDR_T_64BIT
905 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
910 config DMA_NONCOHERENT
912 select NEED_DMA_MAP_STATE
914 config NEED_DMA_MAP_STATE
917 config SYS_HAS_EARLY_PRINTK
921 bool "Support for hot-pluggable CPUs"
922 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
924 Say Y here to allow turning CPUs off and on. CPUs can be
925 controlled through /sys/devices/system/cpu.
926 (Note: power management support will enable this option
927 automatically on SMP systems. )
928 Say N if you want to disable CPU hotplug.
930 config SYS_SUPPORTS_HOTPLUG_CPU
945 config MIPS_DISABLE_OBSOLETE_IDE
957 config GENERIC_ISA_DMA
959 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
962 config GENERIC_ISA_DMA_SUPPORT_BROKEN
964 select GENERIC_ISA_DMA
973 # Endianess selection. Sufficiently obscure so many users don't know what to
974 # answer,so we try hard to limit the available choices. Also the use of a
975 # choice statement should be more obvious to the user.
978 prompt "Endianess selection"
980 Some MIPS machines can be configured for either little or big endian
981 byte order. These modes require different kernels and a different
982 Linux distribution. In general there is one preferred byteorder for a
983 particular system but some systems are just as commonly used in the
984 one or the other endianness.
986 config CPU_BIG_ENDIAN
988 depends on SYS_SUPPORTS_BIG_ENDIAN
990 config CPU_LITTLE_ENDIAN
992 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1000 config SYS_SUPPORTS_APM_EMULATION
1003 config SYS_SUPPORTS_BIG_ENDIAN
1006 config SYS_SUPPORTS_LITTLE_ENDIAN
1009 config SYS_SUPPORTS_HUGETLBFS
1011 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1038 config MIPS_BOARDS_GEN
1041 config PCI_GT64XXX_PCI0
1044 config NO_EXCEPT_FILL
1049 select SERIAL_RM9000
1055 select DMA_NONCOHERENT
1057 select SWAP_IO_SPACE
1058 select SYS_HAS_CPU_R5500
1059 select SYS_SUPPORTS_32BIT_KERNEL
1060 select SYS_SUPPORTS_64BIT_KERNEL
1061 select SYS_SUPPORTS_BIG_ENDIAN
1068 select DMA_NONCOHERENT
1069 select SYS_HAS_CPU_MIPS32_R2
1070 select SYS_SUPPORTS_32BIT_KERNEL
1071 select SYS_SUPPORTS_LITTLE_ENDIAN
1072 select SYS_SUPPORTS_BIG_ENDIAN
1074 select CPU_MIPSR2_IRQ_VI
1086 select DMA_NONCOHERENT
1088 select SYS_HAS_CPU_MIPS32_R1
1089 select SYS_HAS_EARLY_PRINTK
1090 select SYS_SUPPORTS_32BIT_KERNEL
1093 config SWAP_IO_SPACE
1096 config SERIAL_RM9000
1099 config SGI_HAS_INDYDOG
1111 config SGI_HAS_ZILOG
1114 config SGI_HAS_I8042
1117 config DEFAULT_SGI_PARTITION
1129 config MIPS_L1_CACHE_SHIFT
1131 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1132 default "6" if MIPS_CPU_SCACHE
1133 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1136 config HAVE_STD_PC_SERIAL_PORT
1140 bool "ARC console support"
1141 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1145 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1150 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1159 menu "CPU selection"
1165 config CPU_LOONGSON2E
1167 depends on SYS_HAS_CPU_LOONGSON2E
1168 select CPU_LOONGSON2
1170 The Loongson 2E processor implements the MIPS III instruction set
1171 with many extensions.
1173 It has an internal FPGA northbridge, which is compatible to
1176 config CPU_LOONGSON2F
1178 depends on SYS_HAS_CPU_LOONGSON2F
1179 select CPU_LOONGSON2
1181 select ARCH_REQUIRE_GPIOLIB
1183 The Loongson 2F processor implements the MIPS III instruction set
1184 with many extensions.
1186 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1187 have a similar programming interface with FPGA northbridge used in
1190 config CPU_MIPS32_R1
1191 bool "MIPS32 Release 1"
1192 depends on SYS_HAS_CPU_MIPS32_R1
1193 select CPU_HAS_PREFETCH
1194 select CPU_SUPPORTS_32BIT_KERNEL
1195 select CPU_SUPPORTS_HIGHMEM
1197 Choose this option to build a kernel for release 1 or later of the
1198 MIPS32 architecture. Most modern embedded systems with a 32-bit
1199 MIPS processor are based on a MIPS32 processor. If you know the
1200 specific type of processor in your system, choose those that one
1201 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1202 Release 2 of the MIPS32 architecture is available since several
1203 years so chances are you even have a MIPS32 Release 2 processor
1204 in which case you should choose CPU_MIPS32_R2 instead for better
1207 config CPU_MIPS32_R2
1208 bool "MIPS32 Release 2"
1209 depends on SYS_HAS_CPU_MIPS32_R2
1210 select CPU_HAS_PREFETCH
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_HIGHMEM
1214 Choose this option to build a kernel for release 2 or later of the
1215 MIPS32 architecture. Most modern embedded systems with a 32-bit
1216 MIPS processor are based on a MIPS32 processor. If you know the
1217 specific type of processor in your system, choose those that one
1218 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1220 config CPU_MIPS64_R1
1221 bool "MIPS64 Release 1"
1222 depends on SYS_HAS_CPU_MIPS64_R1
1223 select CPU_HAS_PREFETCH
1224 select CPU_SUPPORTS_32BIT_KERNEL
1225 select CPU_SUPPORTS_64BIT_KERNEL
1226 select CPU_SUPPORTS_HIGHMEM
1227 select CPU_SUPPORTS_HUGEPAGES
1229 Choose this option to build a kernel for release 1 or later of the
1230 MIPS64 architecture. Many modern embedded systems with a 64-bit
1231 MIPS processor are based on a MIPS64 processor. If you know the
1232 specific type of processor in your system, choose those that one
1233 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1234 Release 2 of the MIPS64 architecture is available since several
1235 years so chances are you even have a MIPS64 Release 2 processor
1236 in which case you should choose CPU_MIPS64_R2 instead for better
1239 config CPU_MIPS64_R2
1240 bool "MIPS64 Release 2"
1241 depends on SYS_HAS_CPU_MIPS64_R2
1242 select CPU_HAS_PREFETCH
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_64BIT_KERNEL
1245 select CPU_SUPPORTS_HIGHMEM
1246 select CPU_SUPPORTS_HUGEPAGES
1248 Choose this option to build a kernel for release 2 or later of the
1249 MIPS64 architecture. Many modern embedded systems with a 64-bit
1250 MIPS processor are based on a MIPS64 processor. If you know the
1251 specific type of processor in your system, choose those that one
1252 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1256 depends on SYS_HAS_CPU_R3000
1258 select CPU_SUPPORTS_32BIT_KERNEL
1259 select CPU_SUPPORTS_HIGHMEM
1261 Please make sure to pick the right CPU type. Linux/MIPS is not
1262 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1263 *not* work on R4000 machines and vice versa. However, since most
1264 of the supported machines have an R4000 (or similar) CPU, R4x00
1265 might be a safe bet. If the resulting kernel does not work,
1266 try to recompile with R3000.
1270 depends on SYS_HAS_CPU_TX39XX
1271 select CPU_SUPPORTS_32BIT_KERNEL
1275 depends on SYS_HAS_CPU_VR41XX
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1279 The options selects support for the NEC VR4100 series of processors.
1280 Only choose this option if you have one of these processors as a
1281 kernel built with this option will not run on any other type of
1282 processor or vice versa.
1286 depends on SYS_HAS_CPU_R4300
1287 select CPU_SUPPORTS_32BIT_KERNEL
1288 select CPU_SUPPORTS_64BIT_KERNEL
1290 MIPS Technologies R4300-series processors.
1294 depends on SYS_HAS_CPU_R4X00
1295 select CPU_SUPPORTS_32BIT_KERNEL
1296 select CPU_SUPPORTS_64BIT_KERNEL
1298 MIPS Technologies R4000-series processors other than 4300, including
1299 the R4000, R4400, R4600, and 4700.
1303 depends on SYS_HAS_CPU_TX49XX
1304 select CPU_HAS_PREFETCH
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_64BIT_KERNEL
1310 depends on SYS_HAS_CPU_R5000
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1314 MIPS Technologies R5000-series processors other than the Nevada.
1318 depends on SYS_HAS_CPU_R5432
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1324 depends on SYS_HAS_CPU_R5500
1325 select CPU_SUPPORTS_32BIT_KERNEL
1326 select CPU_SUPPORTS_64BIT_KERNEL
1327 select CPU_SUPPORTS_HUGEPAGES
1329 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1334 depends on EXPERIMENTAL
1335 depends on SYS_HAS_CPU_R6000
1336 select CPU_SUPPORTS_32BIT_KERNEL
1338 MIPS Technologies R6000 and R6000A series processors. Note these
1339 processors are extremely rare and the support for them is incomplete.
1343 depends on SYS_HAS_CPU_NEVADA
1344 select CPU_SUPPORTS_32BIT_KERNEL
1345 select CPU_SUPPORTS_64BIT_KERNEL
1347 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1351 depends on EXPERIMENTAL
1352 depends on SYS_HAS_CPU_R8000
1353 select CPU_HAS_PREFETCH
1354 select CPU_SUPPORTS_64BIT_KERNEL
1356 MIPS Technologies R8000 processors. Note these processors are
1357 uncommon and the support for them is incomplete.
1361 depends on SYS_HAS_CPU_R10000
1362 select CPU_HAS_PREFETCH
1363 select CPU_SUPPORTS_32BIT_KERNEL
1364 select CPU_SUPPORTS_64BIT_KERNEL
1365 select CPU_SUPPORTS_HIGHMEM
1367 MIPS Technologies R10000-series processors.
1371 depends on SYS_HAS_CPU_RM7000
1372 select CPU_HAS_PREFETCH
1373 select CPU_SUPPORTS_32BIT_KERNEL
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1379 depends on SYS_HAS_CPU_RM9000
1380 select CPU_HAS_PREFETCH
1381 select CPU_SUPPORTS_32BIT_KERNEL
1382 select CPU_SUPPORTS_64BIT_KERNEL
1383 select CPU_SUPPORTS_HIGHMEM
1384 select WEAK_ORDERING
1388 depends on SYS_HAS_CPU_SB1
1389 select CPU_SUPPORTS_32BIT_KERNEL
1390 select CPU_SUPPORTS_64BIT_KERNEL
1391 select CPU_SUPPORTS_HIGHMEM
1392 select WEAK_ORDERING
1394 config CPU_CAVIUM_OCTEON
1395 bool "Cavium Octeon processor"
1396 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1397 select CPU_HAS_PREFETCH
1398 select CPU_SUPPORTS_64BIT_KERNEL
1399 select SYS_SUPPORTS_SMP
1400 select NR_CPUS_DEFAULT_16
1401 select WEAK_ORDERING
1402 select CPU_SUPPORTS_HIGHMEM
1403 select CPU_SUPPORTS_HUGEPAGES
1405 The Cavium Octeon processor is a highly integrated chip containing
1406 many ethernet hardware widgets for networking tasks. The processor
1407 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1408 Full details can be found at http://www.caviumnetworks.com.
1410 config CPU_BMIPS3300
1412 depends on SYS_HAS_CPU_BMIPS3300
1413 select DMA_NONCOHERENT
1415 select SWAP_IO_SPACE
1416 select SYS_SUPPORTS_32BIT_KERNEL
1417 select WEAK_ORDERING
1419 Broadcom BMIPS3300 processors.
1421 config CPU_BMIPS4350
1423 depends on SYS_HAS_CPU_BMIPS4350
1424 select CPU_SUPPORTS_32BIT_KERNEL
1425 select DMA_NONCOHERENT
1427 select SWAP_IO_SPACE
1428 select SYS_SUPPORTS_SMP
1429 select SYS_SUPPORTS_HOTPLUG_CPU
1430 select WEAK_ORDERING
1432 Broadcom BMIPS4350 ("VIPER") processors.
1434 config CPU_BMIPS4380
1436 depends on SYS_HAS_CPU_BMIPS4380
1437 select CPU_SUPPORTS_32BIT_KERNEL
1438 select DMA_NONCOHERENT
1440 select SWAP_IO_SPACE
1441 select SYS_SUPPORTS_SMP
1442 select SYS_SUPPORTS_HOTPLUG_CPU
1443 select WEAK_ORDERING
1445 Broadcom BMIPS4380 processors.
1447 config CPU_BMIPS5000
1449 depends on SYS_HAS_CPU_BMIPS5000
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1452 select DMA_NONCOHERENT
1454 select SWAP_IO_SPACE
1455 select SYS_SUPPORTS_SMP
1456 select SYS_SUPPORTS_HOTPLUG_CPU
1457 select WEAK_ORDERING
1459 Broadcom BMIPS5000 processors.
1462 bool "Netlogic XLR SoC"
1463 depends on SYS_HAS_CPU_XLR
1464 select CPU_SUPPORTS_32BIT_KERNEL
1465 select CPU_SUPPORTS_64BIT_KERNEL
1466 select CPU_SUPPORTS_HIGHMEM
1467 select WEAK_ORDERING
1468 select WEAK_REORDERING_BEYOND_LLSC
1469 select CPU_SUPPORTS_HUGEPAGES
1471 Netlogic Microsystems XLR/XLS processors.
1475 config CPU_NOP_WORKAROUNDS
1478 config CPU_JUMP_WORKAROUNDS
1481 config CPU_LOONGSON2F_WORKAROUNDS
1482 bool "Loongson 2F Workarounds"
1484 select CPU_NOP_WORKAROUNDS
1485 select CPU_JUMP_WORKAROUNDS
1487 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1488 require workarounds. Without workarounds the system may hang
1489 unexpectedly. For more information please refer to the gas
1490 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1492 Loongson 2F03 and later have fixed these issues and no workarounds
1493 are needed. The workarounds have no significant side effect on them
1494 but may decrease the performance of the system so this option should
1495 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1498 If unsure, please say Y.
1499 endif # CPU_LOONGSON2F
1501 config SYS_SUPPORTS_ZBOOT
1503 select HAVE_KERNEL_GZIP
1504 select HAVE_KERNEL_BZIP2
1505 select HAVE_KERNEL_LZMA
1506 select HAVE_KERNEL_LZO
1508 config SYS_SUPPORTS_ZBOOT_UART16550
1510 select SYS_SUPPORTS_ZBOOT
1512 config CPU_LOONGSON2
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_64BIT_KERNEL
1516 select CPU_SUPPORTS_HIGHMEM
1518 config SYS_HAS_CPU_LOONGSON2E
1521 config SYS_HAS_CPU_LOONGSON2F
1523 select CPU_SUPPORTS_CPUFREQ
1524 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1525 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1527 config SYS_HAS_CPU_MIPS32_R1
1530 config SYS_HAS_CPU_MIPS32_R2
1533 config SYS_HAS_CPU_MIPS64_R1
1536 config SYS_HAS_CPU_MIPS64_R2
1539 config SYS_HAS_CPU_R3000
1542 config SYS_HAS_CPU_TX39XX
1545 config SYS_HAS_CPU_VR41XX
1548 config SYS_HAS_CPU_R4300
1551 config SYS_HAS_CPU_R4X00
1554 config SYS_HAS_CPU_TX49XX
1557 config SYS_HAS_CPU_R5000
1560 config SYS_HAS_CPU_R5432
1563 config SYS_HAS_CPU_R5500
1566 config SYS_HAS_CPU_R6000
1569 config SYS_HAS_CPU_NEVADA
1572 config SYS_HAS_CPU_R8000
1575 config SYS_HAS_CPU_R10000
1578 config SYS_HAS_CPU_RM7000
1581 config SYS_HAS_CPU_RM9000
1584 config SYS_HAS_CPU_SB1
1587 config SYS_HAS_CPU_CAVIUM_OCTEON
1590 config SYS_HAS_CPU_BMIPS3300
1593 config SYS_HAS_CPU_BMIPS4350
1596 config SYS_HAS_CPU_BMIPS4380
1599 config SYS_HAS_CPU_BMIPS5000
1602 config SYS_HAS_CPU_XLR
1606 # CPU may reorder R->R, R->W, W->R, W->W
1607 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1609 config WEAK_ORDERING
1613 # CPU may reorder reads and writes beyond LL/SC
1614 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1616 config WEAK_REORDERING_BEYOND_LLSC
1621 # These two indicate any level of the MIPS32 and MIPS64 architecture
1625 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1629 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1632 # These two indicate the revision of the architecture, either Release 1 or Release 2
1636 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1640 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1642 config SYS_SUPPORTS_32BIT_KERNEL
1644 config SYS_SUPPORTS_64BIT_KERNEL
1646 config CPU_SUPPORTS_32BIT_KERNEL
1648 config CPU_SUPPORTS_64BIT_KERNEL
1650 config CPU_SUPPORTS_CPUFREQ
1652 config CPU_SUPPORTS_ADDRWINCFG
1654 config CPU_SUPPORTS_HUGEPAGES
1656 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1658 config MIPS_PGD_C0_CONTEXT
1660 default y if 64BIT && CPU_MIPSR2
1663 # Set to y for ptrace access to watch registers.
1665 config HARDWARE_WATCHPOINTS
1667 default y if CPU_MIPSR1 || CPU_MIPSR2
1673 prompt "Kernel code model"
1675 You should only select this option if you have a workload that
1676 actually benefits from 64-bit processing or if your machine has
1677 large memory. You will only be presented a single option in this
1678 menu if your system does not support both 32-bit and 64-bit kernels.
1681 bool "32-bit kernel"
1682 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1685 Select this option if you want to build a 32-bit kernel.
1687 bool "64-bit kernel"
1688 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1689 select HAVE_SYSCALL_WRAPPERS
1691 Select this option if you want to build a 64-bit kernel.
1696 prompt "Kernel page size"
1697 default PAGE_SIZE_4KB
1699 config PAGE_SIZE_4KB
1701 depends on !CPU_LOONGSON2
1703 This option select the standard 4kB Linux page size. On some
1704 R3000-family processors this is the only available page size. Using
1705 4kB page size will minimize memory consumption and is therefore
1706 recommended for low memory systems.
1708 config PAGE_SIZE_8KB
1710 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1712 Using 8kB page size will result in higher performance kernel at
1713 the price of higher memory consumption. This option is available
1714 only on R8000 and cnMIPS processors. Note that you will need a
1715 suitable Linux distribution to support this.
1717 config PAGE_SIZE_16KB
1719 depends on !CPU_R3000 && !CPU_TX39XX
1721 Using 16kB page size will result in higher performance kernel at
1722 the price of higher memory consumption. This option is available on
1723 all non-R3000 family processors. Note that you will need a suitable
1724 Linux distribution to support this.
1726 config PAGE_SIZE_32KB
1728 depends on CPU_CAVIUM_OCTEON
1730 Using 32kB page size will result in higher performance kernel at
1731 the price of higher memory consumption. This option is available
1732 only on cnMIPS cores. Note that you will need a suitable Linux
1733 distribution to support this.
1735 config PAGE_SIZE_64KB
1737 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1739 Using 64kB page size will result in higher performance kernel at
1740 the price of higher memory consumption. This option is available on
1741 all non-R3000 family processor. Not that at the time of this
1742 writing this option is still high experimental.
1746 config FORCE_MAX_ZONEORDER
1747 int "Maximum zone order"
1748 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1749 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1750 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1751 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1755 The kernel memory allocator divides physically contiguous memory
1756 blocks into "zones", where each zone is a power of two number of
1757 pages. This option selects the largest power of two that the kernel
1758 keeps in the memory allocator. If you need to allocate very large
1759 blocks of physically contiguous memory, then you may need to
1760 increase this value.
1762 This config option is actually maximum order plus one. For example,
1763 a value of 11 means that the largest free memory block is 2^10 pages.
1765 The page size is not necessarily 4KB. Keep this in mind
1766 when choosing a value for this option.
1771 config IP22_CPU_SCACHE
1776 # Support for a MIPS32 / MIPS64 style S-caches
1778 config MIPS_CPU_SCACHE
1782 config R5000_CPU_SCACHE
1786 config RM7000_CPU_SCACHE
1790 config SIBYTE_DMA_PAGEOPS
1791 bool "Use DMA to clear/copy pages"
1794 Instead of using the CPU to zero and copy pages, use a Data Mover
1795 channel. These DMA channels are otherwise unused by the standard
1796 SiByte Linux port. Seems to give a small performance benefit.
1798 config CPU_HAS_PREFETCH
1802 prompt "MIPS MT options"
1804 config MIPS_MT_DISABLED
1805 bool "Disable multithreading support."
1807 Use this option if your workload can't take advantage of
1808 MIPS hardware multithreading support. On systems that don't have
1809 the option of an MT-enabled processor this option will be the only
1810 option in this menu.
1813 bool "Use 1 TC on each available VPE for SMP"
1814 depends on SYS_SUPPORTS_MULTITHREADING
1815 select CPU_MIPSR2_IRQ_VI
1816 select CPU_MIPSR2_IRQ_EI
1818 select NR_CPUS_DEFAULT_2
1820 select SYS_SUPPORTS_SCHED_SMT if SMP
1821 select SYS_SUPPORTS_SMP
1824 This is a kernel model which is known a VSMP but lately has been
1825 marketesed into SMVP.
1826 Virtual SMP uses the processor's VPEs to implement virtual
1827 processors. In currently available configuration of the 34K processor
1828 this allows for a dual processor. Both processors will share the same
1829 primary caches; each will obtain the half of the TLB for it's own
1830 exclusive use. For a layman this model can be described as similar to
1831 what Intel calls Hyperthreading.
1833 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1836 bool "SMTC: Use all TCs on all VPEs for SMP"
1837 depends on CPU_MIPS32_R2
1838 #depends on CPU_MIPS64_R2 # once there is hardware ...
1839 depends on SYS_SUPPORTS_MULTITHREADING
1840 select CPU_MIPSR2_IRQ_VI
1841 select CPU_MIPSR2_IRQ_EI
1843 select NR_CPUS_DEFAULT_8
1845 select SYS_SUPPORTS_SMP
1848 This is a kernel model which is known a SMTC or lately has been
1849 marketesed into SMVP.
1850 is presenting the available TC's of the core as processors to Linux.
1851 On currently available 34K processors this means a Linux system will
1852 see up to 5 processors. The implementation of the SMTC kernel differs
1853 significantly from VSMP and cannot efficiently coexist in the same
1854 kernel binary so the choice between VSMP and SMTC is a compile time
1857 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1865 bool "SMT (multithreading) scheduler support"
1866 depends on SYS_SUPPORTS_SCHED_SMT
1869 SMT scheduler support improves the CPU scheduler's decision making
1870 when dealing with MIPS MT enabled cores at a cost of slightly
1871 increased overhead in some places. If unsure say N here.
1873 config SYS_SUPPORTS_SCHED_SMT
1877 config SYS_SUPPORTS_MULTITHREADING
1880 config MIPS_MT_FPAFF
1881 bool "Dynamic FPU affinity for FP-intensive threads"
1883 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1885 config MIPS_VPE_LOADER
1886 bool "VPE loader support."
1887 depends on SYS_SUPPORTS_MULTITHREADING
1888 select CPU_MIPSR2_IRQ_VI
1889 select CPU_MIPSR2_IRQ_EI
1892 Includes a loader for loading an elf relocatable object
1893 onto another VPE and running it.
1895 config MIPS_MT_SMTC_IM_BACKSTOP
1896 bool "Use per-TC register bits as backstop for inhibited IM bits"
1897 depends on MIPS_MT_SMTC
1900 To support multiple TC microthreads acting as "CPUs" within
1901 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1902 during interrupt handling. To support legacy drivers and interrupt
1903 controller management code, SMTC has a "backstop" to track and
1904 if necessary restore the interrupt mask. This has some performance
1905 impact on interrupt service overhead.
1907 config MIPS_MT_SMTC_IRQAFF
1908 bool "Support IRQ affinity API"
1909 depends on MIPS_MT_SMTC
1912 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1913 for SMTC Linux kernel. Requires platform support, of which
1914 an example can be found in the MIPS kernel i8259 and Malta
1915 platform code. Adds some overhead to interrupt dispatch, and
1916 should be used only if you know what you are doing.
1918 config MIPS_VPE_LOADER_TOM
1919 bool "Load VPE program into memory hidden from linux"
1920 depends on MIPS_VPE_LOADER
1923 The loader can use memory that is present but has been hidden from
1924 Linux using the kernel command line option "mem=xxMB". It's up to
1925 you to ensure the amount you put in the option and the space your
1926 program requires is less or equal to the amount physically present.
1928 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1929 config MIPS_VPE_APSP_API
1930 bool "Enable support for AP/SP API (RTLX)"
1931 depends on MIPS_VPE_LOADER
1934 config MIPS_APSP_KSPD
1936 depends on MIPS_VPE_APSP_API
1939 KSPD is a kernel daemon that accepts syscall requests from the SP
1940 side, actions them and returns the results. It also handles the
1941 "exit" syscall notifying other kernel modules the SP program is
1942 exiting. You probably want to say yes here.
1945 bool "MIPS CMP framework support"
1946 depends on SYS_SUPPORTS_MIPS_CMP
1948 select SYS_SUPPORTS_SMP
1949 select SYS_SUPPORTS_SCHED_SMT if SMP
1950 select WEAK_ORDERING
1953 This is a placeholder option for the GCMP work. It will need to
1954 be handled differently...
1956 config SB1_PASS_1_WORKAROUNDS
1958 depends on CPU_SB1_PASS_1
1961 config SB1_PASS_2_WORKAROUNDS
1963 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1966 config SB1_PASS_2_1_WORKAROUNDS
1968 depends on CPU_SB1 && CPU_SB1_PASS_2
1971 config 64BIT_PHYS_ADDR
1974 config ARCH_PHYS_ADDR_T_64BIT
1975 def_bool 64BIT_PHYS_ADDR
1977 config CPU_HAS_SMARTMIPS
1978 depends on SYS_SUPPORTS_SMARTMIPS
1979 bool "Support for the SmartMIPS ASE"
1981 SmartMIPS is a extension of the MIPS32 architecture aimed at
1982 increased security at both hardware and software level for
1983 smartcards. Enabling this option will allow proper use of the
1984 SmartMIPS instructions by Linux applications. However a kernel with
1985 this option will not work on a MIPS core without SmartMIPS core. If
1986 you don't know you probably don't have SmartMIPS and should say N
1993 # Vectored interrupt mode is an R2 feature
1995 config CPU_MIPSR2_IRQ_VI
1999 # Extended interrupt mode is an R2 feature
2001 config CPU_MIPSR2_IRQ_EI
2006 depends on !CPU_R3000
2009 config GENERIC_CLOCKEVENTS_BROADCAST
2015 config CPU_DADDI_WORKAROUNDS
2018 config CPU_R4000_WORKAROUNDS
2020 select CPU_R4400_WORKAROUNDS
2022 config CPU_R4400_WORKAROUNDS
2026 # - Highmem only makes sense for the 32-bit kernel.
2027 # - The current highmem code will only work properly on physically indexed
2028 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2029 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2030 # moment we protect the user and offer the highmem option only on machines
2031 # where it's known to be safe. This will not offer highmem on a few systems
2032 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2033 # indexed CPUs but we're playing safe.
2034 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2035 # know they might have memory configurations that could make use of highmem
2039 bool "High Memory Support"
2040 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2042 config CPU_SUPPORTS_HIGHMEM
2045 config SYS_SUPPORTS_HIGHMEM
2048 config SYS_SUPPORTS_SMARTMIPS
2051 config ARCH_FLATMEM_ENABLE
2053 depends on !NUMA && !CPU_LOONGSON2
2055 config ARCH_DISCONTIGMEM_ENABLE
2057 default y if SGI_IP27
2059 Say Y to support efficient handling of discontiguous physical memory,
2060 for architectures which are either NUMA (Non-Uniform Memory Access)
2061 or have huge holes in the physical address space for other reasons.
2062 See <file:Documentation/vm/numa> for more.
2064 config ARCH_POPULATES_NODE_MAP
2067 config ARCH_SPARSEMEM_ENABLE
2069 select SPARSEMEM_STATIC
2073 depends on SYS_SUPPORTS_NUMA
2075 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2076 Access). This option improves performance on systems with more
2077 than two nodes; on two node systems it is generally better to
2078 leave it disabled; on single node systems disable this option
2081 config SYS_SUPPORTS_NUMA
2087 depends on NEED_MULTIPLE_NODES
2089 config HW_PERF_EVENTS
2090 bool "Enable hardware performance counter support for perf events"
2091 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2094 Enable hardware performance counter support for perf events. If
2095 disabled, perf events will use software events only.
2100 bool "Multi-Processing support"
2101 depends on SYS_SUPPORTS_SMP
2103 select USE_GENERIC_SMP_HELPERS
2105 This enables support for systems with more than one CPU. If you have
2106 a system with only one CPU, like most personal computers, say N. If
2107 you have a system with more than one CPU, say Y.
2109 If you say N here, the kernel will run on single and multiprocessor
2110 machines, but will use only one CPU of a multiprocessor machine. If
2111 you say Y here, the kernel will run on many, but not all,
2112 singleprocessor machines. On a singleprocessor machine, the kernel
2113 will run faster if you say N here.
2115 People using multiprocessor machines who say Y here should also say
2116 Y to "Enhanced Real Time Clock Support", below.
2118 See also the SMP-HOWTO available at
2119 <http://www.tldp.org/docs.html#howto>.
2121 If you don't know what to do here, say N.
2126 config SYS_SUPPORTS_MIPS_CMP
2129 config SYS_SUPPORTS_SMP
2132 config NR_CPUS_DEFAULT_1
2135 config NR_CPUS_DEFAULT_2
2138 config NR_CPUS_DEFAULT_4
2141 config NR_CPUS_DEFAULT_8
2144 config NR_CPUS_DEFAULT_16
2147 config NR_CPUS_DEFAULT_32
2150 config NR_CPUS_DEFAULT_64
2154 int "Maximum number of CPUs (2-64)"
2155 range 1 64 if NR_CPUS_DEFAULT_1
2157 default "1" if NR_CPUS_DEFAULT_1
2158 default "2" if NR_CPUS_DEFAULT_2
2159 default "4" if NR_CPUS_DEFAULT_4
2160 default "8" if NR_CPUS_DEFAULT_8
2161 default "16" if NR_CPUS_DEFAULT_16
2162 default "32" if NR_CPUS_DEFAULT_32
2163 default "64" if NR_CPUS_DEFAULT_64
2165 This allows you to specify the maximum number of CPUs which this
2166 kernel will support. The maximum supported value is 32 for 32-bit
2167 kernel and 64 for 64-bit kernels; the minimum value which makes
2168 sense is 1 for Qemu (useful only for kernel debugging purposes)
2169 and 2 for all others.
2171 This is purely to save memory - each supported CPU adds
2172 approximately eight kilobytes to the kernel image. For best
2173 performance should round up your number of processors to the next
2176 source "kernel/time/Kconfig"
2179 # Timer Interrupt Frequency Configuration
2183 prompt "Timer frequency"
2186 Allows the configuration of the timer frequency.
2189 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2192 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2195 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2198 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2201 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2204 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2207 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2211 config SYS_SUPPORTS_48HZ
2214 config SYS_SUPPORTS_100HZ
2217 config SYS_SUPPORTS_128HZ
2220 config SYS_SUPPORTS_250HZ
2223 config SYS_SUPPORTS_256HZ
2226 config SYS_SUPPORTS_1000HZ
2229 config SYS_SUPPORTS_1024HZ
2232 config SYS_SUPPORTS_ARBIT_HZ
2234 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2235 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2236 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2237 !SYS_SUPPORTS_1024HZ
2242 default 100 if HZ_100
2243 default 128 if HZ_128
2244 default 250 if HZ_250
2245 default 256 if HZ_256
2246 default 1000 if HZ_1000
2247 default 1024 if HZ_1024
2249 source "kernel/Kconfig.preempt"
2252 bool "Kexec system call (EXPERIMENTAL)"
2253 depends on EXPERIMENTAL
2255 kexec is a system call that implements the ability to shutdown your
2256 current kernel, and to start another kernel. It is like a reboot
2257 but it is independent of the system firmware. And like a reboot
2258 you can start any kernel with it, not just Linux.
2260 The name comes from the similarity to the exec system call.
2262 It is an ongoing process to be certain the hardware in a machine
2263 is properly shutdown, so do not be surprised if this code does not
2264 initially work for you. It may help to enable device hotplugging
2265 support. As of this writing the exact hardware interface is
2266 strongly in flux, so no good recommendation can be made.
2269 bool "Enable seccomp to safely compute untrusted bytecode"
2273 This kernel feature is useful for number crunching applications
2274 that may need to compute untrusted bytecode during their
2275 execution. By using pipes or other transports made available to
2276 the process as file descriptors supporting the read/write
2277 syscalls, it's possible to isolate those applications in
2278 their own address space using seccomp. Once seccomp is
2279 enabled via /proc/<pid>/seccomp, it cannot be disabled
2280 and the task is only allowed to execute a few safe syscalls
2281 defined by each seccomp mode.
2283 If unsure, say Y. Only embedded should say N here.
2286 bool "Flattened Device Tree support"
2288 select OF_EARLY_FLATTREE
2290 Include support for flattened device tree machine descriptions.
2294 config LOCKDEP_SUPPORT
2298 config STACKTRACE_SUPPORT
2302 source "init/Kconfig"
2304 source "kernel/Kconfig.freezer"
2306 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2314 bool "Support for PCI controller"
2315 depends on HW_HAS_PCI
2318 Find out whether you have a PCI motherboard. PCI is the name of a
2319 bus system, i.e. the way the CPU talks to the other stuff inside
2320 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2326 source "drivers/pci/Kconfig"
2329 # ISA support is now enabled via select. Too many systems still have the one
2330 # or other ISA chip on the board that users don't know about so don't expect
2331 # users to choose the right thing ...
2338 depends on HW_HAS_EISA
2340 select GENERIC_ISA_DMA
2342 The Extended Industry Standard Architecture (EISA) bus was
2343 developed as an open alternative to the IBM MicroChannel bus.
2345 The EISA bus provided some of the features of the IBM MicroChannel
2346 bus while maintaining backward compatibility with cards made for
2347 the older ISA bus. The EISA bus saw limited use between 1988 and
2348 1995 when it was made obsolete by the PCI bus.
2350 Say Y here if you are building a kernel for an EISA-based machine.
2354 source "drivers/eisa/Kconfig"
2357 bool "TURBOchannel support"
2358 depends on MACH_DECSTATION
2360 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2361 processors. TURBOchannel programming specifications are available
2363 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2365 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2366 Linux driver support status is documented at:
2367 <http://www.linux-mips.org/wiki/DECstation>
2370 # bool "Access.Bus support"
2381 select MIPS_EXTERNAL_TIMER
2386 source "drivers/pcmcia/Kconfig"
2388 source "drivers/pci/hotplug/Kconfig"
2391 bool "RapidIO support"
2395 If you say Y here, the kernel will include drivers and
2396 infrastructure code to support RapidIO interconnect devices.
2398 source "drivers/rapidio/Kconfig"
2402 menu "Executable file formats"
2404 source "fs/Kconfig.binfmt"
2409 config MIPS32_COMPAT
2410 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2413 Select this option if you want Linux/MIPS 32-bit binary
2414 compatibility. Since all software available for Linux/MIPS is
2415 currently 32-bit you should say Y here.
2419 depends on MIPS32_COMPAT
2422 config SYSVIPC_COMPAT
2424 depends on COMPAT && SYSVIPC
2428 bool "Kernel support for o32 binaries"
2429 depends on MIPS32_COMPAT
2431 Select this option if you want to run o32 binaries. These are pure
2432 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2433 existing binaries are in this format.
2438 bool "Kernel support for n32 binaries"
2439 depends on MIPS32_COMPAT
2441 Select this option if you want to run n32 binaries. These are
2442 64-bit binaries using 32-bit quantities for addressing and certain
2443 data that would normally be 64-bit. They are used in special
2450 default y if MIPS32_O32 || MIPS32_N32
2454 menu "Power management options"
2456 config ARCH_HIBERNATION_POSSIBLE
2458 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2460 config ARCH_SUSPEND_POSSIBLE
2462 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2464 source "kernel/power/Kconfig"
2468 source "arch/mips/kernel/cpufreq/Kconfig"
2470 source "net/Kconfig"
2472 source "drivers/Kconfig"
2476 source "arch/mips/Kconfig.debug"
2478 source "security/Kconfig"
2480 source "crypto/Kconfig"
2482 source "lib/Kconfig"