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 select HAVE_MEMBLOCK_NODE_MAP
30 select ARCH_DISCARD_MEMBLOCK
32 menu "Machine selection"
42 bool "Alchemy processor based machines"
43 select 64BIT_PHYS_ADDR
47 select SYS_HAS_CPU_MIPS32_R1
48 select SYS_SUPPORTS_32BIT_KERNEL
49 select SYS_SUPPORTS_APM_EMULATION
51 select ARCH_WANT_OPTIONAL_GPIOLIB
52 select SYS_SUPPORTS_ZBOOT
53 select USB_ARCH_HAS_OHCI
54 select USB_ARCH_HAS_EHCI
57 bool "Texas Instruments AR7"
59 select DMA_NONCOHERENT
65 select SYS_HAS_CPU_MIPS32_R1
66 select SYS_HAS_EARLY_PRINTK
67 select SYS_SUPPORTS_32BIT_KERNEL
68 select SYS_SUPPORTS_LITTLE_ENDIAN
69 select SYS_SUPPORTS_ZBOOT_UART16550
70 select ARCH_REQUIRE_GPIOLIB
74 Support for the Texas Instruments AR7 System-on-a-Chip
75 family: TNETD7100, 7200 and 7300.
78 bool "Atheros AR71XX/AR724X/AR913X based boards"
79 select ARCH_REQUIRE_GPIOLIB
83 select DMA_NONCOHERENT
86 select SYS_HAS_CPU_MIPS32_R2
87 select SYS_HAS_EARLY_PRINTK
88 select SYS_SUPPORTS_32BIT_KERNEL
89 select SYS_SUPPORTS_BIG_ENDIAN
91 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
94 bool "Broadcom BCM47XX based boards"
97 select DMA_NONCOHERENT
100 select SYS_SUPPORTS_32BIT_KERNEL
101 select SYS_SUPPORTS_LITTLE_ENDIAN
103 select SYS_HAS_EARLY_PRINTK
106 Support for BCM47XX based boards
109 bool "Broadcom BCM63XX based boards"
112 select DMA_NONCOHERENT
114 select SYS_HAS_CPU_MIPS32_R1
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_HAS_EARLY_PRINTK
119 select ARCH_REQUIRE_GPIOLIB
121 Support for BCM63XX based boards
128 select DMA_NONCOHERENT
134 select PCI_GT64XXX_PCI0
136 select SYS_HAS_CPU_NEVADA
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_64BIT_KERNEL
140 select SYS_SUPPORTS_LITTLE_ENDIAN
142 config MACH_DECSTATION
149 select CPU_DADDI_WORKAROUNDS if 64BIT
150 select CPU_R4000_WORKAROUNDS if 64BIT
151 select CPU_R4400_WORKAROUNDS if 64BIT
152 select DMA_NONCOHERENT
155 select SYS_HAS_CPU_R3000
156 select SYS_HAS_CPU_R4X00
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_128HZ
161 select SYS_SUPPORTS_256HZ
162 select SYS_SUPPORTS_1024HZ
164 This enables support for DEC's MIPS based workstations. For details
165 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
166 DECstation porting pages on <http://decstation.unix-ag.org/>.
168 If you have one of the following DECstation Models you definitely
169 want to choose R4xx0 for the CPU Type:
176 otherwise choose R3000.
179 bool "Jazz family of machines"
182 select ARCH_MAY_HAVE_PC_FDC
185 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
186 select GENERIC_ISA_DMA
187 select HAVE_PCSPKR_PLATFORM
192 select SYS_HAS_CPU_R4X00
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
195 select SYS_SUPPORTS_100HZ
197 This a family of machines based on the MIPS R4030 chipset which was
198 used by several vendors to build RISC/os and Windows NT workstations.
199 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
200 Olivetti M700-10 workstations.
203 bool "Ingenic JZ4740 based machines"
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select DMA_NONCOHERENT
210 select ARCH_REQUIRE_GPIOLIB
211 select SYS_HAS_EARLY_PRINTK
214 select GENERIC_IRQ_CHIP
217 bool "Lantiq based platforms"
218 select DMA_NONCOHERENT
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_HAS_CPU_MIPS32_R2
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_MULTITHREADING
227 select SYS_HAS_EARLY_PRINTK
228 select ARCH_REQUIRE_GPIOLIB
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
727 The Octeon simulator is software performance model of the Cavium
728 Octeon Processor. It supports simulating Octeon processors on x86
731 config CAVIUM_OCTEON_REFERENCE_BOARD
732 bool "Cavium Networks Octeon reference board"
734 select 64BIT_PHYS_ADDR
736 select SYS_SUPPORTS_64BIT_KERNEL
737 select SYS_SUPPORTS_BIG_ENDIAN
738 select SYS_SUPPORTS_HIGHMEM
739 select SYS_SUPPORTS_HOTPLUG_CPU
740 select SYS_HAS_EARLY_PRINTK
741 select SYS_HAS_CPU_CAVIUM_OCTEON
744 select ARCH_SUPPORTS_MSI
746 select USB_ARCH_HAS_OHCI
747 select USB_ARCH_HAS_EHCI
750 This option supports all of the Octeon reference boards from Cavium
751 Networks. It builds a kernel that dynamically determines the Octeon
752 CPU type and supports all known board reference implementations.
753 Some of the supported boards are:
760 Say Y here for most Octeon reference boards.
763 bool "Netlogic XLR/XLS based systems"
764 depends on EXPERIMENTAL
768 select SYS_HAS_CPU_XLR
769 select SYS_SUPPORTS_SMP
772 select SYS_SUPPORTS_32BIT_KERNEL
773 select SYS_SUPPORTS_64BIT_KERNEL
774 select 64BIT_PHYS_ADDR
775 select SYS_SUPPORTS_BIG_ENDIAN
776 select SYS_SUPPORTS_HIGHMEM
778 select NR_CPUS_DEFAULT_32
782 select ZONE_DMA if 64BIT
784 select SYS_HAS_EARLY_PRINTK
786 Support for systems based on Netlogic XLR and XLS processors.
787 Say Y here if you have a XLR or XLS based board.
791 source "arch/mips/alchemy/Kconfig"
792 source "arch/mips/ath79/Kconfig"
793 source "arch/mips/bcm47xx/Kconfig"
794 source "arch/mips/bcm63xx/Kconfig"
795 source "arch/mips/jazz/Kconfig"
796 source "arch/mips/jz4740/Kconfig"
797 source "arch/mips/lantiq/Kconfig"
798 source "arch/mips/lasat/Kconfig"
799 source "arch/mips/pmc-sierra/Kconfig"
800 source "arch/mips/powertv/Kconfig"
801 source "arch/mips/sgi-ip27/Kconfig"
802 source "arch/mips/sibyte/Kconfig"
803 source "arch/mips/txx9/Kconfig"
804 source "arch/mips/vr41xx/Kconfig"
805 source "arch/mips/cavium-octeon/Kconfig"
806 source "arch/mips/loongson/Kconfig"
807 source "arch/mips/netlogic/Kconfig"
811 config RWSEM_GENERIC_SPINLOCK
815 config RWSEM_XCHGADD_ALGORITHM
818 config ARCH_HAS_ILOG2_U32
822 config ARCH_HAS_ILOG2_U64
826 config GENERIC_HWEIGHT
830 config GENERIC_CALIBRATE_DELAY
834 config GENERIC_CLOCKEVENTS
838 config GENERIC_CMOS_UPDATE
842 config SCHED_OMIT_FRAME_POINTER
847 # Select some configuration options automatically based on user selections.
852 config ARCH_MAY_HAVE_PC_FDC
901 select ARCH_REQUIRE_GPIOLIB
907 config ARCH_DMA_ADDR_T_64BIT
908 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
913 config DMA_NONCOHERENT
915 select NEED_DMA_MAP_STATE
917 config NEED_DMA_MAP_STATE
920 config SYS_HAS_EARLY_PRINTK
924 bool "Support for hot-pluggable CPUs"
925 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
927 Say Y here to allow turning CPUs off and on. CPUs can be
928 controlled through /sys/devices/system/cpu.
929 (Note: power management support will enable this option
930 automatically on SMP systems. )
931 Say N if you want to disable CPU hotplug.
933 config SYS_SUPPORTS_HOTPLUG_CPU
948 config MIPS_DISABLE_OBSOLETE_IDE
960 config GENERIC_ISA_DMA
962 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
965 config GENERIC_ISA_DMA_SUPPORT_BROKEN
967 select GENERIC_ISA_DMA
979 # Endianess selection. Sufficiently obscure so many users don't know what to
980 # answer,so we try hard to limit the available choices. Also the use of a
981 # choice statement should be more obvious to the user.
984 prompt "Endianess selection"
986 Some MIPS machines can be configured for either little or big endian
987 byte order. These modes require different kernels and a different
988 Linux distribution. In general there is one preferred byteorder for a
989 particular system but some systems are just as commonly used in the
990 one or the other endianness.
992 config CPU_BIG_ENDIAN
994 depends on SYS_SUPPORTS_BIG_ENDIAN
996 config CPU_LITTLE_ENDIAN
998 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1006 config SYS_SUPPORTS_APM_EMULATION
1009 config SYS_SUPPORTS_BIG_ENDIAN
1012 config SYS_SUPPORTS_LITTLE_ENDIAN
1015 config SYS_SUPPORTS_HUGETLBFS
1017 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1044 config MIPS_BOARDS_GEN
1047 config PCI_GT64XXX_PCI0
1050 config NO_EXCEPT_FILL
1055 select SERIAL_RM9000
1061 select DMA_NONCOHERENT
1063 select SWAP_IO_SPACE
1064 select SYS_HAS_CPU_R5500
1065 select SYS_SUPPORTS_32BIT_KERNEL
1066 select SYS_SUPPORTS_64BIT_KERNEL
1067 select SYS_SUPPORTS_BIG_ENDIAN
1074 select DMA_NONCOHERENT
1075 select SYS_HAS_CPU_MIPS32_R2
1076 select SYS_SUPPORTS_32BIT_KERNEL
1077 select SYS_SUPPORTS_LITTLE_ENDIAN
1078 select SYS_SUPPORTS_BIG_ENDIAN
1080 select CPU_MIPSR2_IRQ_VI
1092 select DMA_NONCOHERENT
1094 select SYS_HAS_CPU_MIPS32_R1
1095 select SYS_HAS_EARLY_PRINTK
1096 select SYS_SUPPORTS_32BIT_KERNEL
1099 config SWAP_IO_SPACE
1102 config SERIAL_RM9000
1105 config SGI_HAS_INDYDOG
1117 config SGI_HAS_ZILOG
1120 config SGI_HAS_I8042
1123 config DEFAULT_SGI_PARTITION
1135 config MIPS_L1_CACHE_SHIFT
1137 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1138 default "6" if MIPS_CPU_SCACHE
1139 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1142 config HAVE_STD_PC_SERIAL_PORT
1146 bool "ARC console support"
1147 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1151 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1156 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1165 menu "CPU selection"
1171 config CPU_LOONGSON2E
1173 depends on SYS_HAS_CPU_LOONGSON2E
1174 select CPU_LOONGSON2
1176 The Loongson 2E processor implements the MIPS III instruction set
1177 with many extensions.
1179 It has an internal FPGA northbridge, which is compatible to
1182 config CPU_LOONGSON2F
1184 depends on SYS_HAS_CPU_LOONGSON2F
1185 select CPU_LOONGSON2
1187 select ARCH_REQUIRE_GPIOLIB
1189 The Loongson 2F processor implements the MIPS III instruction set
1190 with many extensions.
1192 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1193 have a similar programming interface with FPGA northbridge used in
1196 config CPU_MIPS32_R1
1197 bool "MIPS32 Release 1"
1198 depends on SYS_HAS_CPU_MIPS32_R1
1199 select CPU_HAS_PREFETCH
1200 select CPU_SUPPORTS_32BIT_KERNEL
1201 select CPU_SUPPORTS_HIGHMEM
1203 Choose this option to build a kernel for release 1 or later of the
1204 MIPS32 architecture. Most modern embedded systems with a 32-bit
1205 MIPS processor are based on a MIPS32 processor. If you know the
1206 specific type of processor in your system, choose those that one
1207 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1208 Release 2 of the MIPS32 architecture is available since several
1209 years so chances are you even have a MIPS32 Release 2 processor
1210 in which case you should choose CPU_MIPS32_R2 instead for better
1213 config CPU_MIPS32_R2
1214 bool "MIPS32 Release 2"
1215 depends on SYS_HAS_CPU_MIPS32_R2
1216 select CPU_HAS_PREFETCH
1217 select CPU_SUPPORTS_32BIT_KERNEL
1218 select CPU_SUPPORTS_HIGHMEM
1220 Choose this option to build a kernel for release 2 or later of the
1221 MIPS32 architecture. Most modern embedded systems with a 32-bit
1222 MIPS processor are based on a MIPS32 processor. If you know the
1223 specific type of processor in your system, choose those that one
1224 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1226 config CPU_MIPS64_R1
1227 bool "MIPS64 Release 1"
1228 depends on SYS_HAS_CPU_MIPS64_R1
1229 select CPU_HAS_PREFETCH
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1232 select CPU_SUPPORTS_HIGHMEM
1233 select CPU_SUPPORTS_HUGEPAGES
1235 Choose this option to build a kernel for release 1 or later of the
1236 MIPS64 architecture. Many modern embedded systems with a 64-bit
1237 MIPS processor are based on a MIPS64 processor. If you know the
1238 specific type of processor in your system, choose those that one
1239 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1240 Release 2 of the MIPS64 architecture is available since several
1241 years so chances are you even have a MIPS64 Release 2 processor
1242 in which case you should choose CPU_MIPS64_R2 instead for better
1245 config CPU_MIPS64_R2
1246 bool "MIPS64 Release 2"
1247 depends on SYS_HAS_CPU_MIPS64_R2
1248 select CPU_HAS_PREFETCH
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1251 select CPU_SUPPORTS_HIGHMEM
1252 select CPU_SUPPORTS_HUGEPAGES
1254 Choose this option to build a kernel for release 2 or later of the
1255 MIPS64 architecture. Many modern embedded systems with a 64-bit
1256 MIPS processor are based on a MIPS64 processor. If you know the
1257 specific type of processor in your system, choose those that one
1258 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1262 depends on SYS_HAS_CPU_R3000
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_HIGHMEM
1267 Please make sure to pick the right CPU type. Linux/MIPS is not
1268 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1269 *not* work on R4000 machines and vice versa. However, since most
1270 of the supported machines have an R4000 (or similar) CPU, R4x00
1271 might be a safe bet. If the resulting kernel does not work,
1272 try to recompile with R3000.
1276 depends on SYS_HAS_CPU_TX39XX
1277 select CPU_SUPPORTS_32BIT_KERNEL
1281 depends on SYS_HAS_CPU_VR41XX
1282 select CPU_SUPPORTS_32BIT_KERNEL
1283 select CPU_SUPPORTS_64BIT_KERNEL
1285 The options selects support for the NEC VR4100 series of processors.
1286 Only choose this option if you have one of these processors as a
1287 kernel built with this option will not run on any other type of
1288 processor or vice versa.
1292 depends on SYS_HAS_CPU_R4300
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1296 MIPS Technologies R4300-series processors.
1300 depends on SYS_HAS_CPU_R4X00
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1304 MIPS Technologies R4000-series processors other than 4300, including
1305 the R4000, R4400, R4600, and 4700.
1309 depends on SYS_HAS_CPU_TX49XX
1310 select CPU_HAS_PREFETCH
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1316 depends on SYS_HAS_CPU_R5000
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1320 MIPS Technologies R5000-series processors other than the Nevada.
1324 depends on SYS_HAS_CPU_R5432
1325 select CPU_SUPPORTS_32BIT_KERNEL
1326 select CPU_SUPPORTS_64BIT_KERNEL
1330 depends on SYS_HAS_CPU_R5500
1331 select CPU_SUPPORTS_32BIT_KERNEL
1332 select CPU_SUPPORTS_64BIT_KERNEL
1333 select CPU_SUPPORTS_HUGEPAGES
1335 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1340 depends on EXPERIMENTAL
1341 depends on SYS_HAS_CPU_R6000
1342 select CPU_SUPPORTS_32BIT_KERNEL
1344 MIPS Technologies R6000 and R6000A series processors. Note these
1345 processors are extremely rare and the support for them is incomplete.
1349 depends on SYS_HAS_CPU_NEVADA
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_64BIT_KERNEL
1353 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1357 depends on EXPERIMENTAL
1358 depends on SYS_HAS_CPU_R8000
1359 select CPU_HAS_PREFETCH
1360 select CPU_SUPPORTS_64BIT_KERNEL
1362 MIPS Technologies R8000 processors. Note these processors are
1363 uncommon and the support for them is incomplete.
1367 depends on SYS_HAS_CPU_R10000
1368 select CPU_HAS_PREFETCH
1369 select CPU_SUPPORTS_32BIT_KERNEL
1370 select CPU_SUPPORTS_64BIT_KERNEL
1371 select CPU_SUPPORTS_HIGHMEM
1373 MIPS Technologies R10000-series processors.
1377 depends on SYS_HAS_CPU_RM7000
1378 select CPU_HAS_PREFETCH
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select CPU_SUPPORTS_64BIT_KERNEL
1381 select CPU_SUPPORTS_HIGHMEM
1385 depends on SYS_HAS_CPU_RM9000
1386 select CPU_HAS_PREFETCH
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select CPU_SUPPORTS_64BIT_KERNEL
1389 select CPU_SUPPORTS_HIGHMEM
1390 select WEAK_ORDERING
1394 depends on SYS_HAS_CPU_SB1
1395 select CPU_SUPPORTS_32BIT_KERNEL
1396 select CPU_SUPPORTS_64BIT_KERNEL
1397 select CPU_SUPPORTS_HIGHMEM
1398 select WEAK_ORDERING
1400 config CPU_CAVIUM_OCTEON
1401 bool "Cavium Octeon processor"
1402 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1403 select CPU_HAS_PREFETCH
1404 select CPU_SUPPORTS_64BIT_KERNEL
1405 select SYS_SUPPORTS_SMP
1406 select NR_CPUS_DEFAULT_16
1407 select WEAK_ORDERING
1408 select CPU_SUPPORTS_HIGHMEM
1409 select CPU_SUPPORTS_HUGEPAGES
1411 The Cavium Octeon processor is a highly integrated chip containing
1412 many ethernet hardware widgets for networking tasks. The processor
1413 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1414 Full details can be found at http://www.caviumnetworks.com.
1416 config CPU_BMIPS3300
1418 depends on SYS_HAS_CPU_BMIPS3300
1419 select DMA_NONCOHERENT
1421 select SWAP_IO_SPACE
1422 select SYS_SUPPORTS_32BIT_KERNEL
1423 select WEAK_ORDERING
1425 Broadcom BMIPS3300 processors.
1427 config CPU_BMIPS4350
1429 depends on SYS_HAS_CPU_BMIPS4350
1430 select CPU_SUPPORTS_32BIT_KERNEL
1431 select DMA_NONCOHERENT
1433 select SWAP_IO_SPACE
1434 select SYS_SUPPORTS_SMP
1435 select SYS_SUPPORTS_HOTPLUG_CPU
1436 select WEAK_ORDERING
1438 Broadcom BMIPS4350 ("VIPER") processors.
1440 config CPU_BMIPS4380
1442 depends on SYS_HAS_CPU_BMIPS4380
1443 select CPU_SUPPORTS_32BIT_KERNEL
1444 select DMA_NONCOHERENT
1446 select SWAP_IO_SPACE
1447 select SYS_SUPPORTS_SMP
1448 select SYS_SUPPORTS_HOTPLUG_CPU
1449 select WEAK_ORDERING
1451 Broadcom BMIPS4380 processors.
1453 config CPU_BMIPS5000
1455 depends on SYS_HAS_CPU_BMIPS5000
1456 select CPU_SUPPORTS_32BIT_KERNEL
1457 select CPU_SUPPORTS_HIGHMEM
1458 select DMA_NONCOHERENT
1460 select SWAP_IO_SPACE
1461 select SYS_SUPPORTS_SMP
1462 select SYS_SUPPORTS_HOTPLUG_CPU
1463 select WEAK_ORDERING
1465 Broadcom BMIPS5000 processors.
1468 bool "Netlogic XLR SoC"
1469 depends on SYS_HAS_CPU_XLR
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_64BIT_KERNEL
1472 select CPU_SUPPORTS_HIGHMEM
1473 select WEAK_ORDERING
1474 select WEAK_REORDERING_BEYOND_LLSC
1475 select CPU_SUPPORTS_HUGEPAGES
1477 Netlogic Microsystems XLR/XLS processors.
1481 config CPU_NOP_WORKAROUNDS
1484 config CPU_JUMP_WORKAROUNDS
1487 config CPU_LOONGSON2F_WORKAROUNDS
1488 bool "Loongson 2F Workarounds"
1490 select CPU_NOP_WORKAROUNDS
1491 select CPU_JUMP_WORKAROUNDS
1493 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1494 require workarounds. Without workarounds the system may hang
1495 unexpectedly. For more information please refer to the gas
1496 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1498 Loongson 2F03 and later have fixed these issues and no workarounds
1499 are needed. The workarounds have no significant side effect on them
1500 but may decrease the performance of the system so this option should
1501 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1504 If unsure, please say Y.
1505 endif # CPU_LOONGSON2F
1507 config SYS_SUPPORTS_ZBOOT
1509 select HAVE_KERNEL_GZIP
1510 select HAVE_KERNEL_BZIP2
1511 select HAVE_KERNEL_LZMA
1512 select HAVE_KERNEL_LZO
1514 config SYS_SUPPORTS_ZBOOT_UART16550
1516 select SYS_SUPPORTS_ZBOOT
1518 config CPU_LOONGSON2
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HIGHMEM
1524 config SYS_HAS_CPU_LOONGSON2E
1527 config SYS_HAS_CPU_LOONGSON2F
1529 select CPU_SUPPORTS_CPUFREQ
1530 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1531 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1533 config SYS_HAS_CPU_MIPS32_R1
1536 config SYS_HAS_CPU_MIPS32_R2
1539 config SYS_HAS_CPU_MIPS64_R1
1542 config SYS_HAS_CPU_MIPS64_R2
1545 config SYS_HAS_CPU_R3000
1548 config SYS_HAS_CPU_TX39XX
1551 config SYS_HAS_CPU_VR41XX
1554 config SYS_HAS_CPU_R4300
1557 config SYS_HAS_CPU_R4X00
1560 config SYS_HAS_CPU_TX49XX
1563 config SYS_HAS_CPU_R5000
1566 config SYS_HAS_CPU_R5432
1569 config SYS_HAS_CPU_R5500
1572 config SYS_HAS_CPU_R6000
1575 config SYS_HAS_CPU_NEVADA
1578 config SYS_HAS_CPU_R8000
1581 config SYS_HAS_CPU_R10000
1584 config SYS_HAS_CPU_RM7000
1587 config SYS_HAS_CPU_RM9000
1590 config SYS_HAS_CPU_SB1
1593 config SYS_HAS_CPU_CAVIUM_OCTEON
1596 config SYS_HAS_CPU_BMIPS3300
1599 config SYS_HAS_CPU_BMIPS4350
1602 config SYS_HAS_CPU_BMIPS4380
1605 config SYS_HAS_CPU_BMIPS5000
1608 config SYS_HAS_CPU_XLR
1612 # CPU may reorder R->R, R->W, W->R, W->W
1613 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1615 config WEAK_ORDERING
1619 # CPU may reorder reads and writes beyond LL/SC
1620 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1622 config WEAK_REORDERING_BEYOND_LLSC
1627 # These two indicate any level of the MIPS32 and MIPS64 architecture
1631 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1635 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1638 # These two indicate the revision of the architecture, either Release 1 or Release 2
1642 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1646 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1648 config SYS_SUPPORTS_32BIT_KERNEL
1650 config SYS_SUPPORTS_64BIT_KERNEL
1652 config CPU_SUPPORTS_32BIT_KERNEL
1654 config CPU_SUPPORTS_64BIT_KERNEL
1656 config CPU_SUPPORTS_CPUFREQ
1658 config CPU_SUPPORTS_ADDRWINCFG
1660 config CPU_SUPPORTS_HUGEPAGES
1662 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1664 config MIPS_PGD_C0_CONTEXT
1666 default y if 64BIT && CPU_MIPSR2
1669 # Set to y for ptrace access to watch registers.
1671 config HARDWARE_WATCHPOINTS
1673 default y if CPU_MIPSR1 || CPU_MIPSR2
1679 prompt "Kernel code model"
1681 You should only select this option if you have a workload that
1682 actually benefits from 64-bit processing or if your machine has
1683 large memory. You will only be presented a single option in this
1684 menu if your system does not support both 32-bit and 64-bit kernels.
1687 bool "32-bit kernel"
1688 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1691 Select this option if you want to build a 32-bit kernel.
1693 bool "64-bit kernel"
1694 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1695 select HAVE_SYSCALL_WRAPPERS
1697 Select this option if you want to build a 64-bit kernel.
1702 prompt "Kernel page size"
1703 default PAGE_SIZE_4KB
1705 config PAGE_SIZE_4KB
1707 depends on !CPU_LOONGSON2
1709 This option select the standard 4kB Linux page size. On some
1710 R3000-family processors this is the only available page size. Using
1711 4kB page size will minimize memory consumption and is therefore
1712 recommended for low memory systems.
1714 config PAGE_SIZE_8KB
1716 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1718 Using 8kB page size will result in higher performance kernel at
1719 the price of higher memory consumption. This option is available
1720 only on R8000 and cnMIPS processors. Note that you will need a
1721 suitable Linux distribution to support this.
1723 config PAGE_SIZE_16KB
1725 depends on !CPU_R3000 && !CPU_TX39XX
1727 Using 16kB page size will result in higher performance kernel at
1728 the price of higher memory consumption. This option is available on
1729 all non-R3000 family processors. Note that you will need a suitable
1730 Linux distribution to support this.
1732 config PAGE_SIZE_32KB
1734 depends on CPU_CAVIUM_OCTEON
1736 Using 32kB page size will result in higher performance kernel at
1737 the price of higher memory consumption. This option is available
1738 only on cnMIPS cores. Note that you will need a suitable Linux
1739 distribution to support this.
1741 config PAGE_SIZE_64KB
1743 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1745 Using 64kB page size will result in higher performance kernel at
1746 the price of higher memory consumption. This option is available on
1747 all non-R3000 family processor. Not that at the time of this
1748 writing this option is still high experimental.
1752 config FORCE_MAX_ZONEORDER
1753 int "Maximum zone order"
1754 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1755 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1756 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1757 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1761 The kernel memory allocator divides physically contiguous memory
1762 blocks into "zones", where each zone is a power of two number of
1763 pages. This option selects the largest power of two that the kernel
1764 keeps in the memory allocator. If you need to allocate very large
1765 blocks of physically contiguous memory, then you may need to
1766 increase this value.
1768 This config option is actually maximum order plus one. For example,
1769 a value of 11 means that the largest free memory block is 2^10 pages.
1771 The page size is not necessarily 4KB. Keep this in mind
1772 when choosing a value for this option.
1777 config IP22_CPU_SCACHE
1782 # Support for a MIPS32 / MIPS64 style S-caches
1784 config MIPS_CPU_SCACHE
1788 config R5000_CPU_SCACHE
1792 config RM7000_CPU_SCACHE
1796 config SIBYTE_DMA_PAGEOPS
1797 bool "Use DMA to clear/copy pages"
1800 Instead of using the CPU to zero and copy pages, use a Data Mover
1801 channel. These DMA channels are otherwise unused by the standard
1802 SiByte Linux port. Seems to give a small performance benefit.
1804 config CPU_HAS_PREFETCH
1808 prompt "MIPS MT options"
1810 config MIPS_MT_DISABLED
1811 bool "Disable multithreading support."
1813 Use this option if your workload can't take advantage of
1814 MIPS hardware multithreading support. On systems that don't have
1815 the option of an MT-enabled processor this option will be the only
1816 option in this menu.
1819 bool "Use 1 TC on each available VPE for SMP"
1820 depends on SYS_SUPPORTS_MULTITHREADING
1821 select CPU_MIPSR2_IRQ_VI
1822 select CPU_MIPSR2_IRQ_EI
1824 select NR_CPUS_DEFAULT_2
1826 select SYS_SUPPORTS_SCHED_SMT if SMP
1827 select SYS_SUPPORTS_SMP
1830 This is a kernel model which is known a VSMP but lately has been
1831 marketesed into SMVP.
1832 Virtual SMP uses the processor's VPEs to implement virtual
1833 processors. In currently available configuration of the 34K processor
1834 this allows for a dual processor. Both processors will share the same
1835 primary caches; each will obtain the half of the TLB for it's own
1836 exclusive use. For a layman this model can be described as similar to
1837 what Intel calls Hyperthreading.
1839 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1842 bool "SMTC: Use all TCs on all VPEs for SMP"
1843 depends on CPU_MIPS32_R2
1844 #depends on CPU_MIPS64_R2 # once there is hardware ...
1845 depends on SYS_SUPPORTS_MULTITHREADING
1846 select CPU_MIPSR2_IRQ_VI
1847 select CPU_MIPSR2_IRQ_EI
1849 select NR_CPUS_DEFAULT_8
1851 select SYS_SUPPORTS_SMP
1854 This is a kernel model which is known a SMTC or lately has been
1855 marketesed into SMVP.
1856 is presenting the available TC's of the core as processors to Linux.
1857 On currently available 34K processors this means a Linux system will
1858 see up to 5 processors. The implementation of the SMTC kernel differs
1859 significantly from VSMP and cannot efficiently coexist in the same
1860 kernel binary so the choice between VSMP and SMTC is a compile time
1863 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1871 bool "SMT (multithreading) scheduler support"
1872 depends on SYS_SUPPORTS_SCHED_SMT
1875 SMT scheduler support improves the CPU scheduler's decision making
1876 when dealing with MIPS MT enabled cores at a cost of slightly
1877 increased overhead in some places. If unsure say N here.
1879 config SYS_SUPPORTS_SCHED_SMT
1883 config SYS_SUPPORTS_MULTITHREADING
1886 config MIPS_MT_FPAFF
1887 bool "Dynamic FPU affinity for FP-intensive threads"
1889 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1891 config MIPS_VPE_LOADER
1892 bool "VPE loader support."
1893 depends on SYS_SUPPORTS_MULTITHREADING
1894 select CPU_MIPSR2_IRQ_VI
1895 select CPU_MIPSR2_IRQ_EI
1898 Includes a loader for loading an elf relocatable object
1899 onto another VPE and running it.
1901 config MIPS_MT_SMTC_IM_BACKSTOP
1902 bool "Use per-TC register bits as backstop for inhibited IM bits"
1903 depends on MIPS_MT_SMTC
1906 To support multiple TC microthreads acting as "CPUs" within
1907 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1908 during interrupt handling. To support legacy drivers and interrupt
1909 controller management code, SMTC has a "backstop" to track and
1910 if necessary restore the interrupt mask. This has some performance
1911 impact on interrupt service overhead.
1913 config MIPS_MT_SMTC_IRQAFF
1914 bool "Support IRQ affinity API"
1915 depends on MIPS_MT_SMTC
1918 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1919 for SMTC Linux kernel. Requires platform support, of which
1920 an example can be found in the MIPS kernel i8259 and Malta
1921 platform code. Adds some overhead to interrupt dispatch, and
1922 should be used only if you know what you are doing.
1924 config MIPS_VPE_LOADER_TOM
1925 bool "Load VPE program into memory hidden from linux"
1926 depends on MIPS_VPE_LOADER
1929 The loader can use memory that is present but has been hidden from
1930 Linux using the kernel command line option "mem=xxMB". It's up to
1931 you to ensure the amount you put in the option and the space your
1932 program requires is less or equal to the amount physically present.
1934 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1935 config MIPS_VPE_APSP_API
1936 bool "Enable support for AP/SP API (RTLX)"
1937 depends on MIPS_VPE_LOADER
1940 config MIPS_APSP_KSPD
1942 depends on MIPS_VPE_APSP_API
1945 KSPD is a kernel daemon that accepts syscall requests from the SP
1946 side, actions them and returns the results. It also handles the
1947 "exit" syscall notifying other kernel modules the SP program is
1948 exiting. You probably want to say yes here.
1951 bool "MIPS CMP framework support"
1952 depends on SYS_SUPPORTS_MIPS_CMP
1954 select SYS_SUPPORTS_SMP
1955 select SYS_SUPPORTS_SCHED_SMT if SMP
1956 select WEAK_ORDERING
1959 This is a placeholder option for the GCMP work. It will need to
1960 be handled differently...
1962 config SB1_PASS_1_WORKAROUNDS
1964 depends on CPU_SB1_PASS_1
1967 config SB1_PASS_2_WORKAROUNDS
1969 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1972 config SB1_PASS_2_1_WORKAROUNDS
1974 depends on CPU_SB1 && CPU_SB1_PASS_2
1977 config 64BIT_PHYS_ADDR
1980 config ARCH_PHYS_ADDR_T_64BIT
1981 def_bool 64BIT_PHYS_ADDR
1983 config CPU_HAS_SMARTMIPS
1984 depends on SYS_SUPPORTS_SMARTMIPS
1985 bool "Support for the SmartMIPS ASE"
1987 SmartMIPS is a extension of the MIPS32 architecture aimed at
1988 increased security at both hardware and software level for
1989 smartcards. Enabling this option will allow proper use of the
1990 SmartMIPS instructions by Linux applications. However a kernel with
1991 this option will not work on a MIPS core without SmartMIPS core. If
1992 you don't know you probably don't have SmartMIPS and should say N
1999 # Vectored interrupt mode is an R2 feature
2001 config CPU_MIPSR2_IRQ_VI
2005 # Extended interrupt mode is an R2 feature
2007 config CPU_MIPSR2_IRQ_EI
2012 depends on !CPU_R3000
2015 config GENERIC_CLOCKEVENTS_BROADCAST
2021 config CPU_DADDI_WORKAROUNDS
2024 config CPU_R4000_WORKAROUNDS
2026 select CPU_R4400_WORKAROUNDS
2028 config CPU_R4400_WORKAROUNDS
2032 # - Highmem only makes sense for the 32-bit kernel.
2033 # - The current highmem code will only work properly on physically indexed
2034 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2035 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2036 # moment we protect the user and offer the highmem option only on machines
2037 # where it's known to be safe. This will not offer highmem on a few systems
2038 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2039 # indexed CPUs but we're playing safe.
2040 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2041 # know they might have memory configurations that could make use of highmem
2045 bool "High Memory Support"
2046 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2048 config CPU_SUPPORTS_HIGHMEM
2051 config SYS_SUPPORTS_HIGHMEM
2054 config SYS_SUPPORTS_SMARTMIPS
2057 config ARCH_FLATMEM_ENABLE
2059 depends on !NUMA && !CPU_LOONGSON2
2061 config ARCH_DISCONTIGMEM_ENABLE
2063 default y if SGI_IP27
2065 Say Y to support efficient handling of discontiguous physical memory,
2066 for architectures which are either NUMA (Non-Uniform Memory Access)
2067 or have huge holes in the physical address space for other reasons.
2068 See <file:Documentation/vm/numa> for more.
2070 config ARCH_SPARSEMEM_ENABLE
2072 select SPARSEMEM_STATIC
2076 depends on SYS_SUPPORTS_NUMA
2078 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2079 Access). This option improves performance on systems with more
2080 than two nodes; on two node systems it is generally better to
2081 leave it disabled; on single node systems disable this option
2084 config SYS_SUPPORTS_NUMA
2090 depends on NEED_MULTIPLE_NODES
2092 config HW_PERF_EVENTS
2093 bool "Enable hardware performance counter support for perf events"
2094 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2097 Enable hardware performance counter support for perf events. If
2098 disabled, perf events will use software events only.
2103 bool "Multi-Processing support"
2104 depends on SYS_SUPPORTS_SMP
2106 select USE_GENERIC_SMP_HELPERS
2108 This enables support for systems with more than one CPU. If you have
2109 a system with only one CPU, like most personal computers, say N. If
2110 you have a system with more than one CPU, say Y.
2112 If you say N here, the kernel will run on single and multiprocessor
2113 machines, but will use only one CPU of a multiprocessor machine. If
2114 you say Y here, the kernel will run on many, but not all,
2115 singleprocessor machines. On a singleprocessor machine, the kernel
2116 will run faster if you say N here.
2118 People using multiprocessor machines who say Y here should also say
2119 Y to "Enhanced Real Time Clock Support", below.
2121 See also the SMP-HOWTO available at
2122 <http://www.tldp.org/docs.html#howto>.
2124 If you don't know what to do here, say N.
2129 config SYS_SUPPORTS_MIPS_CMP
2132 config SYS_SUPPORTS_SMP
2135 config NR_CPUS_DEFAULT_1
2138 config NR_CPUS_DEFAULT_2
2141 config NR_CPUS_DEFAULT_4
2144 config NR_CPUS_DEFAULT_8
2147 config NR_CPUS_DEFAULT_16
2150 config NR_CPUS_DEFAULT_32
2153 config NR_CPUS_DEFAULT_64
2157 int "Maximum number of CPUs (2-64)"
2158 range 1 64 if NR_CPUS_DEFAULT_1
2160 default "1" if NR_CPUS_DEFAULT_1
2161 default "2" if NR_CPUS_DEFAULT_2
2162 default "4" if NR_CPUS_DEFAULT_4
2163 default "8" if NR_CPUS_DEFAULT_8
2164 default "16" if NR_CPUS_DEFAULT_16
2165 default "32" if NR_CPUS_DEFAULT_32
2166 default "64" if NR_CPUS_DEFAULT_64
2168 This allows you to specify the maximum number of CPUs which this
2169 kernel will support. The maximum supported value is 32 for 32-bit
2170 kernel and 64 for 64-bit kernels; the minimum value which makes
2171 sense is 1 for Qemu (useful only for kernel debugging purposes)
2172 and 2 for all others.
2174 This is purely to save memory - each supported CPU adds
2175 approximately eight kilobytes to the kernel image. For best
2176 performance should round up your number of processors to the next
2179 source "kernel/time/Kconfig"
2182 # Timer Interrupt Frequency Configuration
2186 prompt "Timer frequency"
2189 Allows the configuration of the timer frequency.
2192 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2195 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2198 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2201 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2204 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2207 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2210 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2214 config SYS_SUPPORTS_48HZ
2217 config SYS_SUPPORTS_100HZ
2220 config SYS_SUPPORTS_128HZ
2223 config SYS_SUPPORTS_250HZ
2226 config SYS_SUPPORTS_256HZ
2229 config SYS_SUPPORTS_1000HZ
2232 config SYS_SUPPORTS_1024HZ
2235 config SYS_SUPPORTS_ARBIT_HZ
2237 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2238 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2239 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2240 !SYS_SUPPORTS_1024HZ
2245 default 100 if HZ_100
2246 default 128 if HZ_128
2247 default 250 if HZ_250
2248 default 256 if HZ_256
2249 default 1000 if HZ_1000
2250 default 1024 if HZ_1024
2252 source "kernel/Kconfig.preempt"
2255 bool "Kexec system call (EXPERIMENTAL)"
2256 depends on EXPERIMENTAL
2258 kexec is a system call that implements the ability to shutdown your
2259 current kernel, and to start another kernel. It is like a reboot
2260 but it is independent of the system firmware. And like a reboot
2261 you can start any kernel with it, not just Linux.
2263 The name comes from the similarity to the exec system call.
2265 It is an ongoing process to be certain the hardware in a machine
2266 is properly shutdown, so do not be surprised if this code does not
2267 initially work for you. It may help to enable device hotplugging
2268 support. As of this writing the exact hardware interface is
2269 strongly in flux, so no good recommendation can be made.
2272 bool "Enable seccomp to safely compute untrusted bytecode"
2276 This kernel feature is useful for number crunching applications
2277 that may need to compute untrusted bytecode during their
2278 execution. By using pipes or other transports made available to
2279 the process as file descriptors supporting the read/write
2280 syscalls, it's possible to isolate those applications in
2281 their own address space using seccomp. Once seccomp is
2282 enabled via /proc/<pid>/seccomp, it cannot be disabled
2283 and the task is only allowed to execute a few safe syscalls
2284 defined by each seccomp mode.
2286 If unsure, say Y. Only embedded should say N here.
2289 bool "Flattened Device Tree support"
2291 select OF_EARLY_FLATTREE
2293 Include support for flattened device tree machine descriptions.
2297 config LOCKDEP_SUPPORT
2301 config STACKTRACE_SUPPORT
2305 source "init/Kconfig"
2307 source "kernel/Kconfig.freezer"
2309 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2317 bool "Support for PCI controller"
2318 depends on HW_HAS_PCI
2321 Find out whether you have a PCI motherboard. PCI is the name of a
2322 bus system, i.e. the way the CPU talks to the other stuff inside
2323 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2329 source "drivers/pci/Kconfig"
2332 # ISA support is now enabled via select. Too many systems still have the one
2333 # or other ISA chip on the board that users don't know about so don't expect
2334 # users to choose the right thing ...
2341 depends on HW_HAS_EISA
2343 select GENERIC_ISA_DMA
2345 The Extended Industry Standard Architecture (EISA) bus was
2346 developed as an open alternative to the IBM MicroChannel bus.
2348 The EISA bus provided some of the features of the IBM MicroChannel
2349 bus while maintaining backward compatibility with cards made for
2350 the older ISA bus. The EISA bus saw limited use between 1988 and
2351 1995 when it was made obsolete by the PCI bus.
2353 Say Y here if you are building a kernel for an EISA-based machine.
2357 source "drivers/eisa/Kconfig"
2360 bool "TURBOchannel support"
2361 depends on MACH_DECSTATION
2363 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2364 processors. TURBOchannel programming specifications are available
2366 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2368 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2369 Linux driver support status is documented at:
2370 <http://www.linux-mips.org/wiki/DECstation>
2373 # bool "Access.Bus support"
2384 select MIPS_EXTERNAL_TIMER
2389 source "drivers/pcmcia/Kconfig"
2391 source "drivers/pci/hotplug/Kconfig"
2394 bool "RapidIO support"
2398 If you say Y here, the kernel will include drivers and
2399 infrastructure code to support RapidIO interconnect devices.
2401 source "drivers/rapidio/Kconfig"
2405 menu "Executable file formats"
2407 source "fs/Kconfig.binfmt"
2412 config MIPS32_COMPAT
2413 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2416 Select this option if you want Linux/MIPS 32-bit binary
2417 compatibility. Since all software available for Linux/MIPS is
2418 currently 32-bit you should say Y here.
2422 depends on MIPS32_COMPAT
2425 config SYSVIPC_COMPAT
2427 depends on COMPAT && SYSVIPC
2431 bool "Kernel support for o32 binaries"
2432 depends on MIPS32_COMPAT
2434 Select this option if you want to run o32 binaries. These are pure
2435 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2436 existing binaries are in this format.
2441 bool "Kernel support for n32 binaries"
2442 depends on MIPS32_COMPAT
2444 Select this option if you want to run n32 binaries. These are
2445 64-bit binaries using 32-bit quantities for addressing and certain
2446 data that would normally be 64-bit. They are used in special
2453 default y if MIPS32_O32 || MIPS32_N32
2457 menu "Power management options"
2459 config ARCH_HIBERNATION_POSSIBLE
2461 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2463 config ARCH_SUSPEND_POSSIBLE
2465 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2467 source "kernel/power/Kconfig"
2471 source "arch/mips/kernel/cpufreq/Kconfig"
2473 source "net/Kconfig"
2475 source "drivers/Kconfig"
2479 source "arch/mips/Kconfig.debug"
2481 source "security/Kconfig"
2483 source "crypto/Kconfig"
2485 source "lib/Kconfig"