4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select RTC_LIB if !MACH_LOONGSON
20 select GENERIC_ATOMIC64 if !64BIT
22 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_HARDIRQS
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select HAVE_ARCH_JUMP_LABEL
27 select IRQ_FORCED_THREADING
29 menu "Machine selection"
39 bool "Alchemy processor based machines"
40 select 64BIT_PHYS_ADDR
44 select SYS_HAS_CPU_MIPS32_R1
45 select SYS_SUPPORTS_32BIT_KERNEL
46 select SYS_SUPPORTS_APM_EMULATION
48 select ARCH_WANT_OPTIONAL_GPIOLIB
49 select SYS_SUPPORTS_ZBOOT
52 bool "Texas Instruments AR7"
54 select DMA_NONCOHERENT
60 select SYS_HAS_CPU_MIPS32_R1
61 select SYS_HAS_EARLY_PRINTK
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_LITTLE_ENDIAN
64 select SYS_SUPPORTS_ZBOOT_UART16550
65 select ARCH_REQUIRE_GPIOLIB
69 Support for the Texas Instruments AR7 System-on-a-Chip
70 family: TNETD7100, 7200 and 7300.
73 bool "Atheros AR71XX/AR724X/AR913X based boards"
74 select ARCH_REQUIRE_GPIOLIB
78 select DMA_NONCOHERENT
81 select SYS_HAS_CPU_MIPS32_R2
82 select SYS_HAS_EARLY_PRINTK
83 select SYS_SUPPORTS_32BIT_KERNEL
84 select SYS_SUPPORTS_BIG_ENDIAN
86 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
89 bool "Broadcom BCM47XX based boards"
92 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_MIPS32_R1
96 select SYS_SUPPORTS_32BIT_KERNEL
97 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SSB_DRIVER_MIPS
100 select SSB_DRIVER_EXTIF
102 select SSB_B43_PCI_BRIDGE if PCI
103 select SSB_PCICORE_HOSTMODE if PCI
105 select SYS_HAS_EARLY_PRINTK
108 Support for BCM47XX based boards
111 bool "Broadcom BCM63XX based boards"
114 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_HAS_EARLY_PRINTK
121 select ARCH_REQUIRE_GPIOLIB
123 Support for BCM63XX based boards
130 select DMA_NONCOHERENT
136 select PCI_GT64XXX_PCI0
138 select SYS_HAS_CPU_NEVADA
139 select SYS_HAS_EARLY_PRINTK
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_64BIT_KERNEL
142 select SYS_SUPPORTS_LITTLE_ENDIAN
144 config MACH_DECSTATION
151 select CPU_DADDI_WORKAROUNDS if 64BIT
152 select CPU_R4000_WORKAROUNDS if 64BIT
153 select CPU_R4400_WORKAROUNDS if 64BIT
154 select DMA_NONCOHERENT
157 select SYS_HAS_CPU_R3000
158 select SYS_HAS_CPU_R4X00
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_128HZ
163 select SYS_SUPPORTS_256HZ
164 select SYS_SUPPORTS_1024HZ
166 This enables support for DEC's MIPS based workstations. For details
167 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
168 DECstation porting pages on <http://decstation.unix-ag.org/>.
170 If you have one of the following DECstation Models you definitely
171 want to choose R4xx0 for the CPU Type:
178 otherwise choose R3000.
181 bool "Jazz family of machines"
184 select ARCH_MAY_HAVE_PC_FDC
187 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
188 select GENERIC_ISA_DMA
189 select HAVE_PCSPKR_PLATFORM
194 select SYS_HAS_CPU_R4X00
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
197 select SYS_SUPPORTS_100HZ
199 This a family of machines based on the MIPS R4030 chipset which was
200 used by several vendors to build RISC/os and Windows NT workstations.
201 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
202 Olivetti M700-10 workstations.
205 bool "Ingenic JZ4740 based machines"
206 select SYS_HAS_CPU_MIPS32_R1
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_LITTLE_ENDIAN
209 select DMA_NONCOHERENT
212 select ARCH_REQUIRE_GPIOLIB
213 select SYS_HAS_EARLY_PRINTK
218 bool "Lantiq based platforms"
219 select DMA_NONCOHERENT
223 select SYS_HAS_CPU_MIPS32_R1
224 select SYS_HAS_CPU_MIPS32_R2
225 select SYS_SUPPORTS_BIG_ENDIAN
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_MULTITHREADING
228 select SYS_HAS_EARLY_PRINTK
229 select ARCH_REQUIRE_GPIOLIB
236 bool "LASAT Networks platforms"
239 select DMA_NONCOHERENT
240 select SYS_HAS_EARLY_PRINTK
243 select PCI_GT64XXX_PCI0
245 select R5000_CPU_SCACHE
246 select SYS_HAS_CPU_R5000
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
249 select SYS_SUPPORTS_LITTLE_ENDIAN
252 bool "Loongson family of machines"
253 select SYS_SUPPORTS_ZBOOT
255 This enables the support of Loongson family of machines.
257 Loongson is a family of general-purpose MIPS-compatible CPUs.
258 developed at Institute of Computing Technology (ICT),
259 Chinese Academy of Sciences (CAS) in the People's Republic
260 of China. The chief architect is Professor Weiwu Hu.
263 bool "MIPS Malta board"
264 select ARCH_MAY_HAVE_PC_FDC
269 select DMA_NONCOHERENT
270 select GENERIC_ISA_DMA
271 select HAVE_PCSPKR_PLATFORM
277 select MIPS_BOARDS_GEN
279 select MIPS_CPU_SCACHE
280 select PCI_GT64XXX_PCI0
283 select SYS_HAS_CPU_MIPS32_R1
284 select SYS_HAS_CPU_MIPS32_R2
285 select SYS_HAS_CPU_MIPS64_R1
286 select SYS_HAS_CPU_NEVADA
287 select SYS_HAS_CPU_RM7000
288 select SYS_HAS_EARLY_PRINTK
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_64BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_SUPPORTS_LITTLE_ENDIAN
293 select SYS_SUPPORTS_MIPS_CMP
294 select SYS_SUPPORTS_MULTITHREADING
295 select SYS_SUPPORTS_SMARTMIPS
296 select SYS_SUPPORTS_ZBOOT
298 This enables support for the MIPS Technologies Malta evaluation
302 bool 'MIPS simulator (MIPSsim)'
305 select DMA_NONCOHERENT
306 select SYS_HAS_EARLY_PRINTK
309 select SYS_HAS_CPU_MIPS32_R1
310 select SYS_HAS_CPU_MIPS32_R2
311 select SYS_HAS_EARLY_PRINTK
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_BIG_ENDIAN
314 select SYS_SUPPORTS_MULTITHREADING
315 select SYS_SUPPORTS_LITTLE_ENDIAN
317 This option enables support for MIPS Technologies MIPSsim software
321 bool "NEC EMMA2RH Mark-eins board"
325 This enables support for the NEC Electronics Mark-eins boards.
328 bool "NEC VR4100 series based machines"
331 select SYS_HAS_CPU_VR41XX
332 select ARCH_REQUIRE_GPIOLIB
335 bool "NXP STB220 board"
338 Support for NXP Semiconductors STB220 Development Board.
345 Support for NXP Semiconductors STB225 Development Board.
348 bool "NXP PNX8550 based JBS board"
350 select SYS_SUPPORTS_LITTLE_ENDIAN
352 config PNX8550_STB810
353 bool "NXP PNX8550 based STB810 board"
355 select SYS_SUPPORTS_LITTLE_ENDIAN
358 bool "PMC-Sierra MSP chipsets"
359 depends on EXPERIMENTAL
362 select DMA_NONCOHERENT
364 select NO_EXCEPT_FILL
366 select SYS_HAS_CPU_MIPS32_R1
367 select SYS_HAS_CPU_MIPS32_R2
368 select SYS_SUPPORTS_32BIT_KERNEL
369 select SYS_SUPPORTS_BIG_ENDIAN
372 select SERIAL_8250_CONSOLE
374 This adds support for the PMC-Sierra family of Multi-Service
375 Processor System-On-A-Chips. These parts include a number
376 of integrated peripherals, interfaces and DSPs in addition to
377 a variety of MIPS cores.
380 bool "PMC-Sierra Yosemite eval board"
389 select SYS_HAS_CPU_RM9000
390 select SYS_HAS_EARLY_PRINTK
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_64BIT_KERNEL
393 select SYS_SUPPORTS_BIG_ENDIAN
394 select SYS_SUPPORTS_HIGHMEM
395 select SYS_SUPPORTS_SMP
397 Yosemite is an evaluation board for the RM9000x2 processor
398 manufactured by PMC-Sierra.
404 select CPU_MIPSR2_IRQ_VI
405 select CPU_MIPSR2_IRQ_EI
407 select DMA_NONCOHERENT
409 select SYS_HAS_EARLY_PRINTK
410 select SYS_HAS_CPU_MIPS32_R2
411 select SYS_SUPPORTS_32BIT_KERNEL
412 select SYS_SUPPORTS_BIG_ENDIAN
413 select SYS_SUPPORTS_HIGHMEM
414 select USB_OHCI_LITTLE_ENDIAN
416 This enables support for the Cisco PowerTV Platform.
419 bool "SGI IP22 (Indy/Indigo2)"
425 select DEFAULT_SGI_PARTITION
426 select DMA_NONCOHERENT
430 select IP22_CPU_SCACHE
432 select GENERIC_ISA_DMA_SUPPORT_BROKEN
434 select SGI_HAS_INDYDOG
440 select SYS_HAS_CPU_R4X00
441 select SYS_HAS_CPU_R5000
443 # Disable EARLY_PRINTK for now since it leads to overwritten prom
444 # memory during early boot on some machines.
446 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
447 # for a more details discussion
449 # select SYS_HAS_EARLY_PRINTK
450 select SYS_SUPPORTS_32BIT_KERNEL
451 select SYS_SUPPORTS_64BIT_KERNEL
452 select SYS_SUPPORTS_BIG_ENDIAN
454 This are the SGI Indy, Challenge S and Indigo2, as well as certain
455 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
456 that runs on these, say Y here.
459 bool "SGI IP27 (Origin200/2000)"
463 select DEFAULT_SGI_PARTITION
465 select SYS_HAS_EARLY_PRINTK
467 select NR_CPUS_DEFAULT_64
468 select SYS_HAS_CPU_R10000
469 select SYS_SUPPORTS_64BIT_KERNEL
470 select SYS_SUPPORTS_BIG_ENDIAN
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_SMP
474 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
475 workstations. To compile a Linux kernel that runs on these, say Y
479 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
480 depends on EXPERIMENTAL
486 select DEFAULT_SGI_PARTITION
487 select DMA_NONCOHERENT
488 select GENERIC_ISA_DMA_SUPPORT_BROKEN
494 select SGI_HAS_INDYDOG
500 select SYS_HAS_CPU_R10000
502 # Disable EARLY_PRINTK for now since it leads to overwritten prom
503 # memory during early boot on some machines.
505 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
506 # for a more details discussion
508 # select SYS_HAS_EARLY_PRINTK
509 select SYS_SUPPORTS_64BIT_KERNEL
510 select SYS_SUPPORTS_BIG_ENDIAN
512 This is the SGI Indigo2 with R10000 processor. To compile a Linux
513 kernel that runs on these, say Y here.
522 select DMA_NONCOHERENT
525 select R5000_CPU_SCACHE
526 select RM7000_CPU_SCACHE
527 select SYS_HAS_CPU_R5000
528 select SYS_HAS_CPU_R10000 if BROKEN
529 select SYS_HAS_CPU_RM7000
530 select SYS_HAS_CPU_NEVADA
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
534 If you want this kernel to run on SGI O2 workstation, say Y here.
537 bool "Sibyte BCM91120C-CRhine"
538 depends on EXPERIMENTAL
541 select SIBYTE_BCM1120
543 select SYS_HAS_CPU_SB1
544 select SYS_SUPPORTS_BIG_ENDIAN
545 select SYS_SUPPORTS_LITTLE_ENDIAN
548 bool "Sibyte BCM91120x-Carmel"
549 depends on EXPERIMENTAL
552 select SIBYTE_BCM1120
554 select SYS_HAS_CPU_SB1
555 select SYS_SUPPORTS_BIG_ENDIAN
556 select SYS_SUPPORTS_LITTLE_ENDIAN
559 bool "Sibyte BCM91125C-CRhone"
560 depends on EXPERIMENTAL
563 select SIBYTE_BCM1125
565 select SYS_HAS_CPU_SB1
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select SYS_SUPPORTS_HIGHMEM
568 select SYS_SUPPORTS_LITTLE_ENDIAN
571 bool "Sibyte BCM91125E-Rhone"
572 depends on EXPERIMENTAL
575 select SIBYTE_BCM1125H
577 select SYS_HAS_CPU_SB1
578 select SYS_SUPPORTS_BIG_ENDIAN
579 select SYS_SUPPORTS_LITTLE_ENDIAN
582 bool "Sibyte BCM91250A-SWARM"
585 select HAVE_PATA_PLATFORM
586 select NR_CPUS_DEFAULT_2
589 select SYS_HAS_CPU_SB1
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_HIGHMEM
592 select SYS_SUPPORTS_LITTLE_ENDIAN
593 select ZONE_DMA32 if 64BIT
595 config SIBYTE_LITTLESUR
596 bool "Sibyte BCM91250C2-LittleSur"
597 depends on EXPERIMENTAL
600 select HAVE_PATA_PLATFORM
601 select NR_CPUS_DEFAULT_2
604 select SYS_HAS_CPU_SB1
605 select SYS_SUPPORTS_BIG_ENDIAN
606 select SYS_SUPPORTS_HIGHMEM
607 select SYS_SUPPORTS_LITTLE_ENDIAN
609 config SIBYTE_SENTOSA
610 bool "Sibyte BCM91250E-Sentosa"
611 depends on EXPERIMENTAL
614 select NR_CPUS_DEFAULT_2
617 select SYS_HAS_CPU_SB1
618 select SYS_SUPPORTS_BIG_ENDIAN
619 select SYS_SUPPORTS_LITTLE_ENDIAN
622 bool "Sibyte BCM91480B-BigSur"
625 select NR_CPUS_DEFAULT_4
626 select SIBYTE_BCM1x80
628 select SYS_HAS_CPU_SB1
629 select SYS_SUPPORTS_BIG_ENDIAN
630 select SYS_SUPPORTS_HIGHMEM
631 select SYS_SUPPORTS_LITTLE_ENDIAN
632 select ZONE_DMA32 if 64BIT
635 bool "SNI RM200/300/400"
636 select ARC if CPU_LITTLE_ENDIAN
637 select ARC32 if CPU_LITTLE_ENDIAN
638 select SNIPROM if CPU_BIG_ENDIAN
639 select ARCH_MAY_HAVE_PC_FDC
643 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
644 select DMA_NONCOHERENT
645 select GENERIC_ISA_DMA
646 select HAVE_PCSPKR_PLATFORM
653 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
654 select SYS_HAS_CPU_R4X00
655 select SYS_HAS_CPU_R5000
656 select SYS_HAS_CPU_R10000
657 select R5000_CPU_SCACHE
658 select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_HIGHMEM
663 select SYS_SUPPORTS_LITTLE_ENDIAN
665 The SNI RM200/300/400 are MIPS-based machines manufactured by
666 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
667 Technology and now in turn merged with Fujitsu. Say Y here to
668 support this machine type.
671 bool "Toshiba TX39 series based machines"
674 bool "Toshiba TX49 series based machines"
676 config MIKROTIK_RB532
677 bool "Mikrotik RB532 boards"
680 select DMA_NONCOHERENT
683 select SYS_HAS_CPU_MIPS32_R1
684 select SYS_SUPPORTS_32BIT_KERNEL
685 select SYS_SUPPORTS_LITTLE_ENDIAN
688 select ARCH_REQUIRE_GPIOLIB
690 Support the Mikrotik(tm) RouterBoard 532 series,
691 based on the IDT RC32434 SoC.
694 bool "Wind River PPMC board"
699 select DMA_NONCOHERENT
701 select PCI_GT64XXX_PCI0
703 select SYS_HAS_CPU_MIPS32_R1
704 select SYS_HAS_CPU_MIPS32_R2
705 select SYS_HAS_CPU_MIPS64_R1
706 select SYS_HAS_CPU_NEVADA
707 select SYS_HAS_CPU_RM7000
708 select SYS_SUPPORTS_32BIT_KERNEL
709 select SYS_SUPPORTS_64BIT_KERNEL
710 select SYS_SUPPORTS_BIG_ENDIAN
711 select SYS_SUPPORTS_LITTLE_ENDIAN
713 This enables support for the Wind River MIPS32 4KC PPMC evaluation
714 board, which is based on GT64120 bridge chip.
716 config CAVIUM_OCTEON_SIMULATOR
717 bool "Cavium Networks Octeon Simulator"
719 select 64BIT_PHYS_ADDR
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select SYS_SUPPORTS_HIGHMEM
724 select SYS_SUPPORTS_HOTPLUG_CPU
725 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
749 This option supports all of the Octeon reference boards from Cavium
750 Networks. It builds a kernel that dynamically determines the Octeon
751 CPU type and supports all known board reference implementations.
752 Some of the supported boards are:
759 Say Y here for most Octeon reference boards.
762 bool "Netlogic XLR/XLS based systems"
763 depends on EXPERIMENTAL
767 select SYS_HAS_CPU_XLR
768 select SYS_SUPPORTS_SMP
771 select SYS_SUPPORTS_32BIT_KERNEL
772 select SYS_SUPPORTS_64BIT_KERNEL
773 select 64BIT_PHYS_ADDR
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
777 select NR_CPUS_DEFAULT_32
781 select ZONE_DMA if 64BIT
783 select SYS_HAS_EARLY_PRINTK
785 Support for systems based on Netlogic XLR and XLS processors.
786 Say Y here if you have a XLR or XLS based board.
790 source "arch/mips/alchemy/Kconfig"
791 source "arch/mips/ath79/Kconfig"
792 source "arch/mips/bcm63xx/Kconfig"
793 source "arch/mips/jazz/Kconfig"
794 source "arch/mips/jz4740/Kconfig"
795 source "arch/mips/lantiq/Kconfig"
796 source "arch/mips/lasat/Kconfig"
797 source "arch/mips/pmc-sierra/Kconfig"
798 source "arch/mips/powertv/Kconfig"
799 source "arch/mips/sgi-ip27/Kconfig"
800 source "arch/mips/sibyte/Kconfig"
801 source "arch/mips/txx9/Kconfig"
802 source "arch/mips/vr41xx/Kconfig"
803 source "arch/mips/cavium-octeon/Kconfig"
804 source "arch/mips/loongson/Kconfig"
805 source "arch/mips/netlogic/Kconfig"
809 config RWSEM_GENERIC_SPINLOCK
813 config RWSEM_XCHGADD_ALGORITHM
816 config ARCH_HAS_ILOG2_U32
820 config ARCH_HAS_ILOG2_U64
824 config ARCH_SUPPORTS_OPROFILE
826 default y if !MIPS_MT_SMTC
828 config GENERIC_HWEIGHT
832 config GENERIC_CALIBRATE_DELAY
836 config GENERIC_CLOCKEVENTS
840 config GENERIC_CMOS_UPDATE
844 config SCHED_OMIT_FRAME_POINTER
849 # Select some configuration options automatically based on user selections.
854 config ARCH_MAY_HAVE_PC_FDC
903 select ARCH_REQUIRE_GPIOLIB
909 config ARCH_DMA_ADDR_T_64BIT
910 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
915 config DMA_NONCOHERENT
917 select NEED_DMA_MAP_STATE
919 config NEED_DMA_MAP_STATE
922 config SYS_HAS_EARLY_PRINTK
926 bool "Support for hot-pluggable CPUs"
927 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
929 Say Y here to allow turning CPUs off and on. CPUs can be
930 controlled through /sys/devices/system/cpu.
931 (Note: power management support will enable this option
932 automatically on SMP systems. )
933 Say N if you want to disable CPU hotplug.
935 config SYS_SUPPORTS_HOTPLUG_CPU
950 config MIPS_DISABLE_OBSOLETE_IDE
962 config GENERIC_ISA_DMA
964 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
967 config GENERIC_ISA_DMA_SUPPORT_BROKEN
969 select GENERIC_ISA_DMA
978 # Endianess selection. Sufficiently obscure so many users don't know what to
979 # answer,so we try hard to limit the available choices. Also the use of a
980 # choice statement should be more obvious to the user.
983 prompt "Endianess selection"
985 Some MIPS machines can be configured for either little or big endian
986 byte order. These modes require different kernels and a different
987 Linux distribution. In general there is one preferred byteorder for a
988 particular system but some systems are just as commonly used in the
989 one or the other endianness.
991 config CPU_BIG_ENDIAN
993 depends on SYS_SUPPORTS_BIG_ENDIAN
995 config CPU_LITTLE_ENDIAN
997 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1005 config SYS_SUPPORTS_APM_EMULATION
1008 config SYS_SUPPORTS_BIG_ENDIAN
1011 config SYS_SUPPORTS_LITTLE_ENDIAN
1014 config SYS_SUPPORTS_HUGETLBFS
1016 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1043 config MIPS_BOARDS_GEN
1046 config PCI_GT64XXX_PCI0
1049 config NO_EXCEPT_FILL
1054 select SERIAL_RM9000
1060 select DMA_NONCOHERENT
1062 select SWAP_IO_SPACE
1063 select SYS_HAS_CPU_R5500
1064 select SYS_SUPPORTS_32BIT_KERNEL
1065 select SYS_SUPPORTS_64BIT_KERNEL
1066 select SYS_SUPPORTS_BIG_ENDIAN
1073 select DMA_NONCOHERENT
1074 select SYS_HAS_CPU_MIPS32_R2
1075 select SYS_SUPPORTS_32BIT_KERNEL
1076 select SYS_SUPPORTS_LITTLE_ENDIAN
1077 select SYS_SUPPORTS_BIG_ENDIAN
1079 select CPU_MIPSR2_IRQ_VI
1091 select DMA_NONCOHERENT
1093 select SYS_HAS_CPU_MIPS32_R1
1094 select SYS_HAS_EARLY_PRINTK
1095 select SYS_SUPPORTS_32BIT_KERNEL
1098 config SWAP_IO_SPACE
1101 config SERIAL_RM9000
1104 config SGI_HAS_INDYDOG
1116 config SGI_HAS_ZILOG
1119 config SGI_HAS_I8042
1122 config DEFAULT_SGI_PARTITION
1134 config MIPS_L1_CACHE_SHIFT
1136 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1137 default "6" if MIPS_CPU_SCACHE
1138 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1141 config HAVE_STD_PC_SERIAL_PORT
1145 bool "ARC console support"
1146 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1150 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1155 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1164 menu "CPU selection"
1170 config CPU_LOONGSON2E
1172 depends on SYS_HAS_CPU_LOONGSON2E
1173 select CPU_LOONGSON2
1175 The Loongson 2E processor implements the MIPS III instruction set
1176 with many extensions.
1178 It has an internal FPGA northbridge, which is compatible to
1181 config CPU_LOONGSON2F
1183 depends on SYS_HAS_CPU_LOONGSON2F
1184 select CPU_LOONGSON2
1186 select ARCH_REQUIRE_GPIOLIB
1188 The Loongson 2F processor implements the MIPS III instruction set
1189 with many extensions.
1191 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1192 have a similar programming interface with FPGA northbridge used in
1195 config CPU_MIPS32_R1
1196 bool "MIPS32 Release 1"
1197 depends on SYS_HAS_CPU_MIPS32_R1
1198 select CPU_HAS_PREFETCH
1199 select CPU_SUPPORTS_32BIT_KERNEL
1200 select CPU_SUPPORTS_HIGHMEM
1202 Choose this option to build a kernel for release 1 or later of the
1203 MIPS32 architecture. Most modern embedded systems with a 32-bit
1204 MIPS processor are based on a MIPS32 processor. If you know the
1205 specific type of processor in your system, choose those that one
1206 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1207 Release 2 of the MIPS32 architecture is available since several
1208 years so chances are you even have a MIPS32 Release 2 processor
1209 in which case you should choose CPU_MIPS32_R2 instead for better
1212 config CPU_MIPS32_R2
1213 bool "MIPS32 Release 2"
1214 depends on SYS_HAS_CPU_MIPS32_R2
1215 select CPU_HAS_PREFETCH
1216 select CPU_SUPPORTS_32BIT_KERNEL
1217 select CPU_SUPPORTS_HIGHMEM
1219 Choose this option to build a kernel for release 2 or later of the
1220 MIPS32 architecture. Most modern embedded systems with a 32-bit
1221 MIPS processor are based on a MIPS32 processor. If you know the
1222 specific type of processor in your system, choose those that one
1223 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1225 config CPU_MIPS64_R1
1226 bool "MIPS64 Release 1"
1227 depends on SYS_HAS_CPU_MIPS64_R1
1228 select CPU_HAS_PREFETCH
1229 select CPU_SUPPORTS_32BIT_KERNEL
1230 select CPU_SUPPORTS_64BIT_KERNEL
1231 select CPU_SUPPORTS_HIGHMEM
1232 select CPU_SUPPORTS_HUGEPAGES
1234 Choose this option to build a kernel for release 1 or later of the
1235 MIPS64 architecture. Many modern embedded systems with a 64-bit
1236 MIPS processor are based on a MIPS64 processor. If you know the
1237 specific type of processor in your system, choose those that one
1238 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1239 Release 2 of the MIPS64 architecture is available since several
1240 years so chances are you even have a MIPS64 Release 2 processor
1241 in which case you should choose CPU_MIPS64_R2 instead for better
1244 config CPU_MIPS64_R2
1245 bool "MIPS64 Release 2"
1246 depends on SYS_HAS_CPU_MIPS64_R2
1247 select CPU_HAS_PREFETCH
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_64BIT_KERNEL
1250 select CPU_SUPPORTS_HIGHMEM
1251 select CPU_SUPPORTS_HUGEPAGES
1253 Choose this option to build a kernel for release 2 or later of the
1254 MIPS64 architecture. Many modern embedded systems with a 64-bit
1255 MIPS processor are based on a MIPS64 processor. If you know the
1256 specific type of processor in your system, choose those that one
1257 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1261 depends on SYS_HAS_CPU_R3000
1263 select CPU_SUPPORTS_32BIT_KERNEL
1264 select CPU_SUPPORTS_HIGHMEM
1266 Please make sure to pick the right CPU type. Linux/MIPS is not
1267 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1268 *not* work on R4000 machines and vice versa. However, since most
1269 of the supported machines have an R4000 (or similar) CPU, R4x00
1270 might be a safe bet. If the resulting kernel does not work,
1271 try to recompile with R3000.
1275 depends on SYS_HAS_CPU_TX39XX
1276 select CPU_SUPPORTS_32BIT_KERNEL
1280 depends on SYS_HAS_CPU_VR41XX
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_64BIT_KERNEL
1284 The options selects support for the NEC VR4100 series of processors.
1285 Only choose this option if you have one of these processors as a
1286 kernel built with this option will not run on any other type of
1287 processor or vice versa.
1291 depends on SYS_HAS_CPU_R4300
1292 select CPU_SUPPORTS_32BIT_KERNEL
1293 select CPU_SUPPORTS_64BIT_KERNEL
1295 MIPS Technologies R4300-series processors.
1299 depends on SYS_HAS_CPU_R4X00
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1303 MIPS Technologies R4000-series processors other than 4300, including
1304 the R4000, R4400, R4600, and 4700.
1308 depends on SYS_HAS_CPU_TX49XX
1309 select CPU_HAS_PREFETCH
1310 select CPU_SUPPORTS_32BIT_KERNEL
1311 select CPU_SUPPORTS_64BIT_KERNEL
1315 depends on SYS_HAS_CPU_R5000
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1319 MIPS Technologies R5000-series processors other than the Nevada.
1323 depends on SYS_HAS_CPU_R5432
1324 select CPU_SUPPORTS_32BIT_KERNEL
1325 select CPU_SUPPORTS_64BIT_KERNEL
1329 depends on SYS_HAS_CPU_R5500
1330 select CPU_SUPPORTS_32BIT_KERNEL
1331 select CPU_SUPPORTS_64BIT_KERNEL
1332 select CPU_SUPPORTS_HUGEPAGES
1334 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1339 depends on EXPERIMENTAL
1340 depends on SYS_HAS_CPU_R6000
1341 select CPU_SUPPORTS_32BIT_KERNEL
1343 MIPS Technologies R6000 and R6000A series processors. Note these
1344 processors are extremely rare and the support for them is incomplete.
1348 depends on SYS_HAS_CPU_NEVADA
1349 select CPU_SUPPORTS_32BIT_KERNEL
1350 select CPU_SUPPORTS_64BIT_KERNEL
1352 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1356 depends on EXPERIMENTAL
1357 depends on SYS_HAS_CPU_R8000
1358 select CPU_HAS_PREFETCH
1359 select CPU_SUPPORTS_64BIT_KERNEL
1361 MIPS Technologies R8000 processors. Note these processors are
1362 uncommon and the support for them is incomplete.
1366 depends on SYS_HAS_CPU_R10000
1367 select CPU_HAS_PREFETCH
1368 select CPU_SUPPORTS_32BIT_KERNEL
1369 select CPU_SUPPORTS_64BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1372 MIPS Technologies R10000-series processors.
1376 depends on SYS_HAS_CPU_RM7000
1377 select CPU_HAS_PREFETCH
1378 select CPU_SUPPORTS_32BIT_KERNEL
1379 select CPU_SUPPORTS_64BIT_KERNEL
1380 select CPU_SUPPORTS_HIGHMEM
1384 depends on SYS_HAS_CPU_RM9000
1385 select CPU_HAS_PREFETCH
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select CPU_SUPPORTS_64BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1389 select WEAK_ORDERING
1393 depends on SYS_HAS_CPU_SB1
1394 select CPU_SUPPORTS_32BIT_KERNEL
1395 select CPU_SUPPORTS_64BIT_KERNEL
1396 select CPU_SUPPORTS_HIGHMEM
1397 select WEAK_ORDERING
1399 config CPU_CAVIUM_OCTEON
1400 bool "Cavium Octeon processor"
1401 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1402 select CPU_HAS_PREFETCH
1403 select CPU_SUPPORTS_64BIT_KERNEL
1404 select SYS_SUPPORTS_SMP
1405 select NR_CPUS_DEFAULT_16
1406 select WEAK_ORDERING
1407 select CPU_SUPPORTS_HIGHMEM
1408 select CPU_SUPPORTS_HUGEPAGES
1410 The Cavium Octeon processor is a highly integrated chip containing
1411 many ethernet hardware widgets for networking tasks. The processor
1412 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1413 Full details can be found at http://www.caviumnetworks.com.
1415 config CPU_BMIPS3300
1417 depends on SYS_HAS_CPU_BMIPS3300
1418 select DMA_NONCOHERENT
1420 select SWAP_IO_SPACE
1421 select SYS_SUPPORTS_32BIT_KERNEL
1422 select WEAK_ORDERING
1424 Broadcom BMIPS3300 processors.
1426 config CPU_BMIPS4350
1428 depends on SYS_HAS_CPU_BMIPS4350
1429 select CPU_SUPPORTS_32BIT_KERNEL
1430 select DMA_NONCOHERENT
1432 select SWAP_IO_SPACE
1433 select SYS_SUPPORTS_SMP
1434 select SYS_SUPPORTS_HOTPLUG_CPU
1435 select WEAK_ORDERING
1437 Broadcom BMIPS4350 ("VIPER") processors.
1439 config CPU_BMIPS4380
1441 depends on SYS_HAS_CPU_BMIPS4380
1442 select CPU_SUPPORTS_32BIT_KERNEL
1443 select DMA_NONCOHERENT
1445 select SWAP_IO_SPACE
1446 select SYS_SUPPORTS_SMP
1447 select SYS_SUPPORTS_HOTPLUG_CPU
1448 select WEAK_ORDERING
1450 Broadcom BMIPS4380 processors.
1452 config CPU_BMIPS5000
1454 depends on SYS_HAS_CPU_BMIPS5000
1455 select CPU_SUPPORTS_32BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1457 select DMA_NONCOHERENT
1459 select SWAP_IO_SPACE
1460 select SYS_SUPPORTS_SMP
1461 select SYS_SUPPORTS_HOTPLUG_CPU
1462 select WEAK_ORDERING
1464 Broadcom BMIPS5000 processors.
1467 bool "Netlogic XLR SoC"
1468 depends on SYS_HAS_CPU_XLR
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_64BIT_KERNEL
1471 select CPU_SUPPORTS_HIGHMEM
1472 select WEAK_ORDERING
1473 select WEAK_REORDERING_BEYOND_LLSC
1474 select CPU_SUPPORTS_HUGEPAGES
1476 Netlogic Microsystems XLR/XLS processors.
1480 config CPU_NOP_WORKAROUNDS
1483 config CPU_JUMP_WORKAROUNDS
1486 config CPU_LOONGSON2F_WORKAROUNDS
1487 bool "Loongson 2F Workarounds"
1489 select CPU_NOP_WORKAROUNDS
1490 select CPU_JUMP_WORKAROUNDS
1492 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1493 require workarounds. Without workarounds the system may hang
1494 unexpectedly. For more information please refer to the gas
1495 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1497 Loongson 2F03 and later have fixed these issues and no workarounds
1498 are needed. The workarounds have no significant side effect on them
1499 but may decrease the performance of the system so this option should
1500 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1503 If unsure, please say Y.
1504 endif # CPU_LOONGSON2F
1506 config SYS_SUPPORTS_ZBOOT
1508 select HAVE_KERNEL_GZIP
1509 select HAVE_KERNEL_BZIP2
1510 select HAVE_KERNEL_LZMA
1511 select HAVE_KERNEL_LZO
1513 config SYS_SUPPORTS_ZBOOT_UART16550
1515 select SYS_SUPPORTS_ZBOOT
1517 config CPU_LOONGSON2
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_64BIT_KERNEL
1521 select CPU_SUPPORTS_HIGHMEM
1523 config SYS_HAS_CPU_LOONGSON2E
1526 config SYS_HAS_CPU_LOONGSON2F
1528 select CPU_SUPPORTS_CPUFREQ
1529 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1530 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1532 config SYS_HAS_CPU_MIPS32_R1
1535 config SYS_HAS_CPU_MIPS32_R2
1538 config SYS_HAS_CPU_MIPS64_R1
1541 config SYS_HAS_CPU_MIPS64_R2
1544 config SYS_HAS_CPU_R3000
1547 config SYS_HAS_CPU_TX39XX
1550 config SYS_HAS_CPU_VR41XX
1553 config SYS_HAS_CPU_R4300
1556 config SYS_HAS_CPU_R4X00
1559 config SYS_HAS_CPU_TX49XX
1562 config SYS_HAS_CPU_R5000
1565 config SYS_HAS_CPU_R5432
1568 config SYS_HAS_CPU_R5500
1571 config SYS_HAS_CPU_R6000
1574 config SYS_HAS_CPU_NEVADA
1577 config SYS_HAS_CPU_R8000
1580 config SYS_HAS_CPU_R10000
1583 config SYS_HAS_CPU_RM7000
1586 config SYS_HAS_CPU_RM9000
1589 config SYS_HAS_CPU_SB1
1592 config SYS_HAS_CPU_CAVIUM_OCTEON
1595 config SYS_HAS_CPU_BMIPS3300
1598 config SYS_HAS_CPU_BMIPS4350
1601 config SYS_HAS_CPU_BMIPS4380
1604 config SYS_HAS_CPU_BMIPS5000
1607 config SYS_HAS_CPU_XLR
1611 # CPU may reorder R->R, R->W, W->R, W->W
1612 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1614 config WEAK_ORDERING
1618 # CPU may reorder reads and writes beyond LL/SC
1619 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1621 config WEAK_REORDERING_BEYOND_LLSC
1626 # These two indicate any level of the MIPS32 and MIPS64 architecture
1630 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1634 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1637 # These two indicate the revision of the architecture, either Release 1 or Release 2
1641 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1645 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1647 config SYS_SUPPORTS_32BIT_KERNEL
1649 config SYS_SUPPORTS_64BIT_KERNEL
1651 config CPU_SUPPORTS_32BIT_KERNEL
1653 config CPU_SUPPORTS_64BIT_KERNEL
1655 config CPU_SUPPORTS_CPUFREQ
1657 config CPU_SUPPORTS_ADDRWINCFG
1659 config CPU_SUPPORTS_HUGEPAGES
1661 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1663 config MIPS_PGD_C0_CONTEXT
1665 default y if 64BIT && CPU_MIPSR2
1668 # Set to y for ptrace access to watch registers.
1670 config HARDWARE_WATCHPOINTS
1672 default y if CPU_MIPSR1 || CPU_MIPSR2
1678 prompt "Kernel code model"
1680 You should only select this option if you have a workload that
1681 actually benefits from 64-bit processing or if your machine has
1682 large memory. You will only be presented a single option in this
1683 menu if your system does not support both 32-bit and 64-bit kernels.
1686 bool "32-bit kernel"
1687 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1690 Select this option if you want to build a 32-bit kernel.
1692 bool "64-bit kernel"
1693 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1694 select HAVE_SYSCALL_WRAPPERS
1696 Select this option if you want to build a 64-bit kernel.
1701 prompt "Kernel page size"
1702 default PAGE_SIZE_4KB
1704 config PAGE_SIZE_4KB
1706 depends on !CPU_LOONGSON2
1708 This option select the standard 4kB Linux page size. On some
1709 R3000-family processors this is the only available page size. Using
1710 4kB page size will minimize memory consumption and is therefore
1711 recommended for low memory systems.
1713 config PAGE_SIZE_8KB
1715 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1717 Using 8kB page size will result in higher performance kernel at
1718 the price of higher memory consumption. This option is available
1719 only on R8000 and cnMIPS processors. Note that you will need a
1720 suitable Linux distribution to support this.
1722 config PAGE_SIZE_16KB
1724 depends on !CPU_R3000 && !CPU_TX39XX
1726 Using 16kB page size will result in higher performance kernel at
1727 the price of higher memory consumption. This option is available on
1728 all non-R3000 family processors. Note that you will need a suitable
1729 Linux distribution to support this.
1731 config PAGE_SIZE_32KB
1733 depends on CPU_CAVIUM_OCTEON
1735 Using 32kB page size will result in higher performance kernel at
1736 the price of higher memory consumption. This option is available
1737 only on cnMIPS cores. Note that you will need a suitable Linux
1738 distribution to support this.
1740 config PAGE_SIZE_64KB
1742 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1744 Using 64kB page size will result in higher performance kernel at
1745 the price of higher memory consumption. This option is available on
1746 all non-R3000 family processor. Not that at the time of this
1747 writing this option is still high experimental.
1751 config FORCE_MAX_ZONEORDER
1752 int "Maximum zone order"
1753 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1754 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1755 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1756 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1760 The kernel memory allocator divides physically contiguous memory
1761 blocks into "zones", where each zone is a power of two number of
1762 pages. This option selects the largest power of two that the kernel
1763 keeps in the memory allocator. If you need to allocate very large
1764 blocks of physically contiguous memory, then you may need to
1765 increase this value.
1767 This config option is actually maximum order plus one. For example,
1768 a value of 11 means that the largest free memory block is 2^10 pages.
1770 The page size is not necessarily 4KB. Keep this in mind
1771 when choosing a value for this option.
1776 config IP22_CPU_SCACHE
1781 # Support for a MIPS32 / MIPS64 style S-caches
1783 config MIPS_CPU_SCACHE
1787 config R5000_CPU_SCACHE
1791 config RM7000_CPU_SCACHE
1795 config SIBYTE_DMA_PAGEOPS
1796 bool "Use DMA to clear/copy pages"
1799 Instead of using the CPU to zero and copy pages, use a Data Mover
1800 channel. These DMA channels are otherwise unused by the standard
1801 SiByte Linux port. Seems to give a small performance benefit.
1803 config CPU_HAS_PREFETCH
1807 prompt "MIPS MT options"
1809 config MIPS_MT_DISABLED
1810 bool "Disable multithreading support."
1812 Use this option if your workload can't take advantage of
1813 MIPS hardware multithreading support. On systems that don't have
1814 the option of an MT-enabled processor this option will be the only
1815 option in this menu.
1818 bool "Use 1 TC on each available VPE for SMP"
1819 depends on SYS_SUPPORTS_MULTITHREADING
1820 select CPU_MIPSR2_IRQ_VI
1821 select CPU_MIPSR2_IRQ_EI
1823 select NR_CPUS_DEFAULT_2
1825 select SYS_SUPPORTS_SCHED_SMT if SMP
1826 select SYS_SUPPORTS_SMP
1829 This is a kernel model which is known a VSMP but lately has been
1830 marketesed into SMVP.
1831 Virtual SMP uses the processor's VPEs to implement virtual
1832 processors. In currently available configuration of the 34K processor
1833 this allows for a dual processor. Both processors will share the same
1834 primary caches; each will obtain the half of the TLB for it's own
1835 exclusive use. For a layman this model can be described as similar to
1836 what Intel calls Hyperthreading.
1838 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1841 bool "SMTC: Use all TCs on all VPEs for SMP"
1842 depends on CPU_MIPS32_R2
1843 #depends on CPU_MIPS64_R2 # once there is hardware ...
1844 depends on SYS_SUPPORTS_MULTITHREADING
1845 select CPU_MIPSR2_IRQ_VI
1846 select CPU_MIPSR2_IRQ_EI
1848 select NR_CPUS_DEFAULT_8
1850 select SYS_SUPPORTS_SMP
1853 This is a kernel model which is known a SMTC or lately has been
1854 marketesed into SMVP.
1855 is presenting the available TC's of the core as processors to Linux.
1856 On currently available 34K processors this means a Linux system will
1857 see up to 5 processors. The implementation of the SMTC kernel differs
1858 significantly from VSMP and cannot efficiently coexist in the same
1859 kernel binary so the choice between VSMP and SMTC is a compile time
1862 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1870 bool "SMT (multithreading) scheduler support"
1871 depends on SYS_SUPPORTS_SCHED_SMT
1874 SMT scheduler support improves the CPU scheduler's decision making
1875 when dealing with MIPS MT enabled cores at a cost of slightly
1876 increased overhead in some places. If unsure say N here.
1878 config SYS_SUPPORTS_SCHED_SMT
1882 config SYS_SUPPORTS_MULTITHREADING
1885 config MIPS_MT_FPAFF
1886 bool "Dynamic FPU affinity for FP-intensive threads"
1888 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1890 config MIPS_VPE_LOADER
1891 bool "VPE loader support."
1892 depends on SYS_SUPPORTS_MULTITHREADING
1893 select CPU_MIPSR2_IRQ_VI
1894 select CPU_MIPSR2_IRQ_EI
1897 Includes a loader for loading an elf relocatable object
1898 onto another VPE and running it.
1900 config MIPS_MT_SMTC_IM_BACKSTOP
1901 bool "Use per-TC register bits as backstop for inhibited IM bits"
1902 depends on MIPS_MT_SMTC
1905 To support multiple TC microthreads acting as "CPUs" within
1906 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1907 during interrupt handling. To support legacy drivers and interrupt
1908 controller management code, SMTC has a "backstop" to track and
1909 if necessary restore the interrupt mask. This has some performance
1910 impact on interrupt service overhead.
1912 config MIPS_MT_SMTC_IRQAFF
1913 bool "Support IRQ affinity API"
1914 depends on MIPS_MT_SMTC
1917 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1918 for SMTC Linux kernel. Requires platform support, of which
1919 an example can be found in the MIPS kernel i8259 and Malta
1920 platform code. Adds some overhead to interrupt dispatch, and
1921 should be used only if you know what you are doing.
1923 config MIPS_VPE_LOADER_TOM
1924 bool "Load VPE program into memory hidden from linux"
1925 depends on MIPS_VPE_LOADER
1928 The loader can use memory that is present but has been hidden from
1929 Linux using the kernel command line option "mem=xxMB". It's up to
1930 you to ensure the amount you put in the option and the space your
1931 program requires is less or equal to the amount physically present.
1933 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1934 config MIPS_VPE_APSP_API
1935 bool "Enable support for AP/SP API (RTLX)"
1936 depends on MIPS_VPE_LOADER
1939 config MIPS_APSP_KSPD
1941 depends on MIPS_VPE_APSP_API
1944 KSPD is a kernel daemon that accepts syscall requests from the SP
1945 side, actions them and returns the results. It also handles the
1946 "exit" syscall notifying other kernel modules the SP program is
1947 exiting. You probably want to say yes here.
1950 bool "MIPS CMP framework support"
1951 depends on SYS_SUPPORTS_MIPS_CMP
1953 select SYS_SUPPORTS_SMP
1954 select SYS_SUPPORTS_SCHED_SMT if SMP
1955 select WEAK_ORDERING
1958 This is a placeholder option for the GCMP work. It will need to
1959 be handled differently...
1961 config SB1_PASS_1_WORKAROUNDS
1963 depends on CPU_SB1_PASS_1
1966 config SB1_PASS_2_WORKAROUNDS
1968 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1971 config SB1_PASS_2_1_WORKAROUNDS
1973 depends on CPU_SB1 && CPU_SB1_PASS_2
1976 config 64BIT_PHYS_ADDR
1979 config ARCH_PHYS_ADDR_T_64BIT
1980 def_bool 64BIT_PHYS_ADDR
1982 config CPU_HAS_SMARTMIPS
1983 depends on SYS_SUPPORTS_SMARTMIPS
1984 bool "Support for the SmartMIPS ASE"
1986 SmartMIPS is a extension of the MIPS32 architecture aimed at
1987 increased security at both hardware and software level for
1988 smartcards. Enabling this option will allow proper use of the
1989 SmartMIPS instructions by Linux applications. However a kernel with
1990 this option will not work on a MIPS core without SmartMIPS core. If
1991 you don't know you probably don't have SmartMIPS and should say N
1998 # Vectored interrupt mode is an R2 feature
2000 config CPU_MIPSR2_IRQ_VI
2004 # Extended interrupt mode is an R2 feature
2006 config CPU_MIPSR2_IRQ_EI
2011 depends on !CPU_R3000
2014 config GENERIC_CLOCKEVENTS_BROADCAST
2020 config CPU_DADDI_WORKAROUNDS
2023 config CPU_R4000_WORKAROUNDS
2025 select CPU_R4400_WORKAROUNDS
2027 config CPU_R4400_WORKAROUNDS
2031 # - Highmem only makes sense for the 32-bit kernel.
2032 # - The current highmem code will only work properly on physically indexed
2033 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2034 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2035 # moment we protect the user and offer the highmem option only on machines
2036 # where it's known to be safe. This will not offer highmem on a few systems
2037 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2038 # indexed CPUs but we're playing safe.
2039 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2040 # know they might have memory configurations that could make use of highmem
2044 bool "High Memory Support"
2045 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2047 config CPU_SUPPORTS_HIGHMEM
2050 config SYS_SUPPORTS_HIGHMEM
2053 config SYS_SUPPORTS_SMARTMIPS
2056 config ARCH_FLATMEM_ENABLE
2058 depends on !NUMA && !CPU_LOONGSON2
2060 config ARCH_DISCONTIGMEM_ENABLE
2062 default y if SGI_IP27
2064 Say Y to support efficient handling of discontiguous physical memory,
2065 for architectures which are either NUMA (Non-Uniform Memory Access)
2066 or have huge holes in the physical address space for other reasons.
2067 See <file:Documentation/vm/numa> for more.
2069 config ARCH_POPULATES_NODE_MAP
2072 config ARCH_SPARSEMEM_ENABLE
2074 select SPARSEMEM_STATIC
2078 depends on SYS_SUPPORTS_NUMA
2080 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2081 Access). This option improves performance on systems with more
2082 than two nodes; on two node systems it is generally better to
2083 leave it disabled; on single node systems disable this option
2086 config SYS_SUPPORTS_NUMA
2092 depends on NEED_MULTIPLE_NODES
2094 config HW_PERF_EVENTS
2095 bool "Enable hardware performance counter support for perf events"
2096 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2099 Enable hardware performance counter support for perf events. If
2100 disabled, perf events will use software events only.
2105 bool "Multi-Processing support"
2106 depends on SYS_SUPPORTS_SMP
2108 select USE_GENERIC_SMP_HELPERS
2110 This enables support for systems with more than one CPU. If you have
2111 a system with only one CPU, like most personal computers, say N. If
2112 you have a system with more than one CPU, say Y.
2114 If you say N here, the kernel will run on single and multiprocessor
2115 machines, but will use only one CPU of a multiprocessor machine. If
2116 you say Y here, the kernel will run on many, but not all,
2117 singleprocessor machines. On a singleprocessor machine, the kernel
2118 will run faster if you say N here.
2120 People using multiprocessor machines who say Y here should also say
2121 Y to "Enhanced Real Time Clock Support", below.
2123 See also the SMP-HOWTO available at
2124 <http://www.tldp.org/docs.html#howto>.
2126 If you don't know what to do here, say N.
2131 config SYS_SUPPORTS_MIPS_CMP
2134 config SYS_SUPPORTS_SMP
2137 config NR_CPUS_DEFAULT_1
2140 config NR_CPUS_DEFAULT_2
2143 config NR_CPUS_DEFAULT_4
2146 config NR_CPUS_DEFAULT_8
2149 config NR_CPUS_DEFAULT_16
2152 config NR_CPUS_DEFAULT_32
2155 config NR_CPUS_DEFAULT_64
2159 int "Maximum number of CPUs (2-64)"
2160 range 1 64 if NR_CPUS_DEFAULT_1
2162 default "1" if NR_CPUS_DEFAULT_1
2163 default "2" if NR_CPUS_DEFAULT_2
2164 default "4" if NR_CPUS_DEFAULT_4
2165 default "8" if NR_CPUS_DEFAULT_8
2166 default "16" if NR_CPUS_DEFAULT_16
2167 default "32" if NR_CPUS_DEFAULT_32
2168 default "64" if NR_CPUS_DEFAULT_64
2170 This allows you to specify the maximum number of CPUs which this
2171 kernel will support. The maximum supported value is 32 for 32-bit
2172 kernel and 64 for 64-bit kernels; the minimum value which makes
2173 sense is 1 for Qemu (useful only for kernel debugging purposes)
2174 and 2 for all others.
2176 This is purely to save memory - each supported CPU adds
2177 approximately eight kilobytes to the kernel image. For best
2178 performance should round up your number of processors to the next
2181 source "kernel/time/Kconfig"
2184 # Timer Interrupt Frequency Configuration
2188 prompt "Timer frequency"
2191 Allows the configuration of the timer frequency.
2194 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2197 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2200 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2203 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2206 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2209 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2212 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2216 config SYS_SUPPORTS_48HZ
2219 config SYS_SUPPORTS_100HZ
2222 config SYS_SUPPORTS_128HZ
2225 config SYS_SUPPORTS_250HZ
2228 config SYS_SUPPORTS_256HZ
2231 config SYS_SUPPORTS_1000HZ
2234 config SYS_SUPPORTS_1024HZ
2237 config SYS_SUPPORTS_ARBIT_HZ
2239 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2240 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2241 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2242 !SYS_SUPPORTS_1024HZ
2247 default 100 if HZ_100
2248 default 128 if HZ_128
2249 default 250 if HZ_250
2250 default 256 if HZ_256
2251 default 1000 if HZ_1000
2252 default 1024 if HZ_1024
2254 source "kernel/Kconfig.preempt"
2256 config MIPS_INSANE_LARGE
2257 bool "Support for large 64-bit configurations"
2258 depends on CPU_R10000 && 64BIT
2260 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2261 previous 64-bit processors which only supported 40 bit / 1TB. If you
2262 need processes of more than 1TB virtual address space, say Y here.
2263 This will result in additional memory usage, so it is not
2264 recommended for normal users.
2267 bool "Kexec system call (EXPERIMENTAL)"
2268 depends on EXPERIMENTAL
2270 kexec is a system call that implements the ability to shutdown your
2271 current kernel, and to start another kernel. It is like a reboot
2272 but it is independent of the system firmware. And like a reboot
2273 you can start any kernel with it, not just Linux.
2275 The name comes from the similarity to the exec system call.
2277 It is an ongoing process to be certain the hardware in a machine
2278 is properly shutdown, so do not be surprised if this code does not
2279 initially work for you. It may help to enable device hotplugging
2280 support. As of this writing the exact hardware interface is
2281 strongly in flux, so no good recommendation can be made.
2284 bool "Enable seccomp to safely compute untrusted bytecode"
2288 This kernel feature is useful for number crunching applications
2289 that may need to compute untrusted bytecode during their
2290 execution. By using pipes or other transports made available to
2291 the process as file descriptors supporting the read/write
2292 syscalls, it's possible to isolate those applications in
2293 their own address space using seccomp. Once seccomp is
2294 enabled via /proc/<pid>/seccomp, it cannot be disabled
2295 and the task is only allowed to execute a few safe syscalls
2296 defined by each seccomp mode.
2298 If unsure, say Y. Only embedded should say N here.
2301 bool "Flattened Device Tree support"
2303 select OF_EARLY_FLATTREE
2305 Include support for flattened device tree machine descriptions.
2309 config LOCKDEP_SUPPORT
2313 config STACKTRACE_SUPPORT
2317 source "init/Kconfig"
2319 source "kernel/Kconfig.freezer"
2321 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2329 bool "Support for PCI controller"
2330 depends on HW_HAS_PCI
2333 Find out whether you have a PCI motherboard. PCI is the name of a
2334 bus system, i.e. the way the CPU talks to the other stuff inside
2335 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2341 source "drivers/pci/Kconfig"
2344 # ISA support is now enabled via select. Too many systems still have the one
2345 # or other ISA chip on the board that users don't know about so don't expect
2346 # users to choose the right thing ...
2353 depends on HW_HAS_EISA
2355 select GENERIC_ISA_DMA
2357 The Extended Industry Standard Architecture (EISA) bus was
2358 developed as an open alternative to the IBM MicroChannel bus.
2360 The EISA bus provided some of the features of the IBM MicroChannel
2361 bus while maintaining backward compatibility with cards made for
2362 the older ISA bus. The EISA bus saw limited use between 1988 and
2363 1995 when it was made obsolete by the PCI bus.
2365 Say Y here if you are building a kernel for an EISA-based machine.
2369 source "drivers/eisa/Kconfig"
2372 bool "TURBOchannel support"
2373 depends on MACH_DECSTATION
2375 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2376 processors. TURBOchannel programming specifications are available
2378 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2380 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2381 Linux driver support status is documented at:
2382 <http://www.linux-mips.org/wiki/DECstation>
2385 # bool "Access.Bus support"
2396 select MIPS_EXTERNAL_TIMER
2401 source "drivers/pcmcia/Kconfig"
2403 source "drivers/pci/hotplug/Kconfig"
2406 bool "RapidIO support"
2410 If you say Y here, the kernel will include drivers and
2411 infrastructure code to support RapidIO interconnect devices.
2413 source "drivers/rapidio/Kconfig"
2417 menu "Executable file formats"
2419 source "fs/Kconfig.binfmt"
2424 config MIPS32_COMPAT
2425 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2428 Select this option if you want Linux/MIPS 32-bit binary
2429 compatibility. Since all software available for Linux/MIPS is
2430 currently 32-bit you should say Y here.
2434 depends on MIPS32_COMPAT
2437 config SYSVIPC_COMPAT
2439 depends on COMPAT && SYSVIPC
2443 bool "Kernel support for o32 binaries"
2444 depends on MIPS32_COMPAT
2446 Select this option if you want to run o32 binaries. These are pure
2447 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2448 existing binaries are in this format.
2453 bool "Kernel support for n32 binaries"
2454 depends on MIPS32_COMPAT
2456 Select this option if you want to run n32 binaries. These are
2457 64-bit binaries using 32-bit quantities for addressing and certain
2458 data that would normally be 64-bit. They are used in special
2465 default y if MIPS32_O32 || MIPS32_N32
2469 menu "Power management options"
2471 config ARCH_HIBERNATION_POSSIBLE
2473 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2475 config ARCH_SUSPEND_POSSIBLE
2477 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2479 source "kernel/power/Kconfig"
2483 source "arch/mips/kernel/cpufreq/Kconfig"
2485 source "net/Kconfig"
2487 source "drivers/Kconfig"
2491 source "arch/mips/Kconfig.debug"
2493 source "security/Kconfig"
2495 source "crypto/Kconfig"
2497 source "lib/Kconfig"