4 select HAVE_CONTEXT_TRACKING
5 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select HAVE_DEBUG_KMEMLEAK
21 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
22 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
23 select RTC_LIB if !MACH_LOONGSON
24 select GENERIC_ATOMIC64 if !64BIT
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
27 select HAVE_DMA_API_DEBUG
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select GENERIC_PCI_IOMAP
31 select HAVE_ARCH_JUMP_LABEL
32 select ARCH_WANT_IPC_PARSE_VERSION
33 select IRQ_FORCED_THREADING
35 select HAVE_MEMBLOCK_NODE_MAP
36 select ARCH_DISCARD_MEMBLOCK
37 select GENERIC_SMP_IDLE_THREAD
38 select BUILDTIME_EXTABLE_SORT
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_CMOS_UPDATE
41 select HAVE_MOD_ARCH_SPECIFIC
43 select MODULES_USE_ELF_REL if MODULES
44 select MODULES_USE_ELF_RELA if MODULES && 64BIT
45 select CLONE_BACKWARDS
46 select HAVE_DEBUG_STACKOVERFLOW
48 menu "Machine selection"
55 bool "Alchemy processor based machines"
56 select 64BIT_PHYS_ADDR
60 select SYS_HAS_CPU_MIPS32_R1
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_APM_EMULATION
63 select ARCH_REQUIRE_GPIOLIB
64 select SYS_SUPPORTS_ZBOOT
65 select USB_ARCH_HAS_OHCI
66 select USB_ARCH_HAS_EHCI
69 bool "Texas Instruments AR7"
71 select DMA_NONCOHERENT
77 select SYS_HAS_CPU_MIPS32_R1
78 select SYS_HAS_EARLY_PRINTK
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_LITTLE_ENDIAN
81 select SYS_SUPPORTS_ZBOOT_UART16550
82 select ARCH_REQUIRE_GPIOLIB
86 Support for the Texas Instruments AR7 System-on-a-Chip
87 family: TNETD7100, 7200 and 7300.
90 bool "Atheros AR71XX/AR724X/AR913X based boards"
91 select ARCH_REQUIRE_GPIOLIB
95 select DMA_NONCOHERENT
100 select SYS_HAS_CPU_MIPS32_R2
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_BIG_ENDIAN
105 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
108 bool "Broadcom BCM47XX based boards"
109 select ARCH_WANT_OPTIONAL_GPIOLIB
113 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_MIPS32_R1
118 select NO_EXCEPT_FILL
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121 select SYS_HAS_EARLY_PRINTK
123 Support for BCM47XX based boards
126 bool "Broadcom BCM63XX based boards"
130 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_MIPS32_R1
133 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_BIG_ENDIAN
136 select SYS_HAS_EARLY_PRINTK
138 select ARCH_REQUIRE_GPIOLIB
141 Support for BCM63XX based boards
148 select DMA_NONCOHERENT
154 select PCI_GT64XXX_PCI0
156 select SYS_HAS_CPU_NEVADA
157 select SYS_HAS_EARLY_PRINTK
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
162 config MACH_DECSTATION
169 select CPU_DADDI_WORKAROUNDS if 64BIT
170 select CPU_R4000_WORKAROUNDS if 64BIT
171 select CPU_R4400_WORKAROUNDS if 64BIT
172 select DMA_NONCOHERENT
175 select SYS_HAS_CPU_R3000
176 select SYS_HAS_CPU_R4X00
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_SUPPORTS_64BIT_KERNEL
179 select SYS_SUPPORTS_LITTLE_ENDIAN
180 select SYS_SUPPORTS_128HZ
181 select SYS_SUPPORTS_256HZ
182 select SYS_SUPPORTS_1024HZ
184 This enables support for DEC's MIPS based workstations. For details
185 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
186 DECstation porting pages on <http://decstation.unix-ag.org/>.
188 If you have one of the following DECstation Models you definitely
189 want to choose R4xx0 for the CPU Type:
196 otherwise choose R3000.
199 bool "Jazz family of machines"
202 select ARCH_MAY_HAVE_PC_FDC
205 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
206 select GENERIC_ISA_DMA
207 select HAVE_PCSPKR_PLATFORM
212 select SYS_HAS_CPU_R4X00
213 select SYS_SUPPORTS_32BIT_KERNEL
214 select SYS_SUPPORTS_64BIT_KERNEL
215 select SYS_SUPPORTS_100HZ
217 This a family of machines based on the MIPS R4030 chipset which was
218 used by several vendors to build RISC/os and Windows NT workstations.
219 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
220 Olivetti M700-10 workstations.
223 bool "Ingenic JZ4740 based machines"
224 select SYS_HAS_CPU_MIPS32_R1
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_LITTLE_ENDIAN
227 select SYS_SUPPORTS_ZBOOT_UART16550
228 select DMA_NONCOHERENT
230 select ARCH_REQUIRE_GPIOLIB
231 select SYS_HAS_EARLY_PRINTK
234 select GENERIC_IRQ_CHIP
237 bool "Lantiq based platforms"
238 select DMA_NONCOHERENT
242 select SYS_HAS_CPU_MIPS32_R1
243 select SYS_HAS_CPU_MIPS32_R2
244 select SYS_SUPPORTS_BIG_ENDIAN
245 select SYS_SUPPORTS_32BIT_KERNEL
246 select SYS_SUPPORTS_MULTITHREADING
247 select SYS_HAS_EARLY_PRINTK
248 select ARCH_REQUIRE_GPIOLIB
251 select HAVE_MACH_CLKDEV
255 select PINCTRL_LANTIQ
258 bool "LASAT Networks platforms"
261 select DMA_NONCOHERENT
262 select SYS_HAS_EARLY_PRINTK
265 select PCI_GT64XXX_PCI0
267 select R5000_CPU_SCACHE
268 select SYS_HAS_CPU_R5000
269 select SYS_SUPPORTS_32BIT_KERNEL
270 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
271 select SYS_SUPPORTS_LITTLE_ENDIAN
274 bool "Loongson family of machines"
275 select SYS_SUPPORTS_ZBOOT
277 This enables the support of Loongson family of machines.
279 Loongson is a family of general-purpose MIPS-compatible CPUs.
280 developed at Institute of Computing Technology (ICT),
281 Chinese Academy of Sciences (CAS) in the People's Republic
282 of China. The chief architect is Professor Weiwu Hu.
284 config MACH_LOONGSON1
285 bool "Loongson 1 family of machines"
286 select SYS_SUPPORTS_ZBOOT
288 This enables support for the Loongson 1 based machines.
290 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
291 the ICT (Institute of Computing Technology) and the Chinese Academy
295 bool "MIPS Malta board"
296 select ARCH_MAY_HAVE_PC_FDC
302 select DMA_NONCOHERENT
303 select GENERIC_ISA_DMA
304 select HAVE_PCSPKR_PLATFORM
311 select MIPS_CPU_SCACHE
312 select PCI_GT64XXX_PCI0
315 select SYS_HAS_CPU_MIPS32_R1
316 select SYS_HAS_CPU_MIPS32_R2
317 select SYS_HAS_CPU_MIPS64_R1
318 select SYS_HAS_CPU_MIPS64_R2
319 select SYS_HAS_CPU_NEVADA
320 select SYS_HAS_CPU_RM7000
321 select SYS_HAS_EARLY_PRINTK
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_64BIT_KERNEL
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select SYS_SUPPORTS_LITTLE_ENDIAN
326 select SYS_SUPPORTS_MIPS_CMP
327 select SYS_SUPPORTS_MULTITHREADING
328 select SYS_SUPPORTS_SMARTMIPS
329 select SYS_SUPPORTS_ZBOOT
331 This enables support for the MIPS Technologies Malta evaluation
335 bool "MIPS SEAD3 board"
341 select CPU_MIPSR2_IRQ_VI
342 select CPU_MIPSR2_IRQ_EI
343 select DMA_NONCOHERENT
347 select SYS_HAS_CPU_MIPS32_R1
348 select SYS_HAS_CPU_MIPS32_R2
349 select SYS_HAS_CPU_MIPS64_R1
350 select SYS_HAS_EARLY_PRINTK
351 select SYS_SUPPORTS_32BIT_KERNEL
352 select SYS_SUPPORTS_64BIT_KERNEL
353 select SYS_SUPPORTS_BIG_ENDIAN
354 select SYS_SUPPORTS_LITTLE_ENDIAN
355 select SYS_SUPPORTS_SMARTMIPS
356 select SYS_SUPPORTS_MICROMIPS
357 select USB_ARCH_HAS_EHCI
358 select USB_EHCI_BIG_ENDIAN_DESC
359 select USB_EHCI_BIG_ENDIAN_MMIO
362 This enables support for the MIPS Technologies SEAD3 evaluation
366 bool "NEC EMMA2RH Mark-eins board"
370 This enables support for the NEC Electronics Mark-eins boards.
373 bool "NEC VR4100 series based machines"
376 select SYS_HAS_CPU_VR41XX
377 select ARCH_REQUIRE_GPIOLIB
380 bool "NXP STB220 board"
383 Support for NXP Semiconductors STB220 Development Board.
390 Support for NXP Semiconductors STB225 Development Board.
393 bool "PMC-Sierra MSP chipsets"
396 select DMA_NONCOHERENT
398 select NO_EXCEPT_FILL
400 select SYS_HAS_CPU_MIPS32_R1
401 select SYS_HAS_CPU_MIPS32_R2
402 select SYS_SUPPORTS_32BIT_KERNEL
403 select SYS_SUPPORTS_BIG_ENDIAN
406 select SERIAL_8250_CONSOLE
407 select USB_EHCI_BIG_ENDIAN_MMIO
408 select USB_EHCI_BIG_ENDIAN_DESC
410 This adds support for the PMC-Sierra family of Multi-Service
411 Processor System-On-A-Chips. These parts include a number
412 of integrated peripherals, interfaces and DSPs in addition to
413 a variety of MIPS cores.
419 select CPU_MIPSR2_IRQ_VI
420 select CPU_MIPSR2_IRQ_EI
422 select DMA_NONCOHERENT
424 select SYS_HAS_CPU_MIPS32_R2
425 select SYS_SUPPORTS_32BIT_KERNEL
426 select SYS_SUPPORTS_BIG_ENDIAN
427 select SYS_SUPPORTS_HIGHMEM
428 select USB_OHCI_LITTLE_ENDIAN
430 This enables support for the Cisco PowerTV Platform.
433 bool "Ralink based machines"
437 select DMA_NONCOHERENT
440 select SYS_HAS_CPU_MIPS32_R1
441 select SYS_HAS_CPU_MIPS32_R2
442 select SYS_SUPPORTS_32BIT_KERNEL
443 select SYS_SUPPORTS_LITTLE_ENDIAN
444 select SYS_HAS_EARLY_PRINTK
445 select HAVE_MACH_CLKDEV
447 select ARCH_HAS_RESET_CONTROLLER
448 select RESET_CONTROLLER
451 bool "SGI IP22 (Indy/Indigo2)"
457 select DEFAULT_SGI_PARTITION
458 select DMA_NONCOHERENT
462 select IP22_CPU_SCACHE
464 select GENERIC_ISA_DMA_SUPPORT_BROKEN
466 select SGI_HAS_INDYDOG
472 select SYS_HAS_CPU_R4X00
473 select SYS_HAS_CPU_R5000
475 # Disable EARLY_PRINTK for now since it leads to overwritten prom
476 # memory during early boot on some machines.
478 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
479 # for a more details discussion
481 # select SYS_HAS_EARLY_PRINTK
482 select SYS_SUPPORTS_32BIT_KERNEL
483 select SYS_SUPPORTS_64BIT_KERNEL
484 select SYS_SUPPORTS_BIG_ENDIAN
486 This are the SGI Indy, Challenge S and Indigo2, as well as certain
487 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
488 that runs on these, say Y here.
491 bool "SGI IP27 (Origin200/2000)"
495 select DEFAULT_SGI_PARTITION
497 select SYS_HAS_EARLY_PRINTK
499 select NR_CPUS_DEFAULT_64
500 select SYS_HAS_CPU_R10000
501 select SYS_SUPPORTS_64BIT_KERNEL
502 select SYS_SUPPORTS_BIG_ENDIAN
503 select SYS_SUPPORTS_NUMA
504 select SYS_SUPPORTS_SMP
506 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
507 workstations. To compile a Linux kernel that runs on these, say Y
511 bool "SGI IP28 (Indigo2 R10k)"
517 select DEFAULT_SGI_PARTITION
518 select DMA_NONCOHERENT
519 select GENERIC_ISA_DMA_SUPPORT_BROKEN
525 select SGI_HAS_INDYDOG
531 select SYS_HAS_CPU_R10000
533 # Disable EARLY_PRINTK for now since it leads to overwritten prom
534 # memory during early boot on some machines.
536 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
537 # for a more details discussion
539 # select SYS_HAS_EARLY_PRINTK
540 select SYS_SUPPORTS_64BIT_KERNEL
541 select SYS_SUPPORTS_BIG_ENDIAN
543 This is the SGI Indigo2 with R10000 processor. To compile a Linux
544 kernel that runs on these, say Y here.
553 select DMA_NONCOHERENT
556 select R5000_CPU_SCACHE
557 select RM7000_CPU_SCACHE
558 select SYS_HAS_CPU_R5000
559 select SYS_HAS_CPU_R10000 if BROKEN
560 select SYS_HAS_CPU_RM7000
561 select SYS_HAS_CPU_NEVADA
562 select SYS_SUPPORTS_64BIT_KERNEL
563 select SYS_SUPPORTS_BIG_ENDIAN
565 If you want this kernel to run on SGI O2 workstation, say Y here.
568 bool "Sibyte BCM91120C-CRhine"
571 select SIBYTE_BCM1120
573 select SYS_HAS_CPU_SB1
574 select SYS_SUPPORTS_BIG_ENDIAN
575 select SYS_SUPPORTS_LITTLE_ENDIAN
578 bool "Sibyte BCM91120x-Carmel"
581 select SIBYTE_BCM1120
583 select SYS_HAS_CPU_SB1
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_LITTLE_ENDIAN
588 bool "Sibyte BCM91125C-CRhone"
591 select SIBYTE_BCM1125
593 select SYS_HAS_CPU_SB1
594 select SYS_SUPPORTS_BIG_ENDIAN
595 select SYS_SUPPORTS_HIGHMEM
596 select SYS_SUPPORTS_LITTLE_ENDIAN
599 bool "Sibyte BCM91125E-Rhone"
602 select SIBYTE_BCM1125H
604 select SYS_HAS_CPU_SB1
605 select SYS_SUPPORTS_BIG_ENDIAN
606 select SYS_SUPPORTS_LITTLE_ENDIAN
609 bool "Sibyte BCM91250A-SWARM"
612 select HAVE_PATA_PLATFORM
615 select SYS_HAS_CPU_SB1
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_HIGHMEM
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select ZONE_DMA32 if 64BIT
621 config SIBYTE_LITTLESUR
622 bool "Sibyte BCM91250C2-LittleSur"
625 select HAVE_PATA_PLATFORM
628 select SYS_HAS_CPU_SB1
629 select SYS_SUPPORTS_BIG_ENDIAN
630 select SYS_SUPPORTS_HIGHMEM
631 select SYS_SUPPORTS_LITTLE_ENDIAN
633 config SIBYTE_SENTOSA
634 bool "Sibyte BCM91250E-Sentosa"
639 select SYS_HAS_CPU_SB1
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select SYS_SUPPORTS_LITTLE_ENDIAN
644 bool "Sibyte BCM91480B-BigSur"
647 select NR_CPUS_DEFAULT_4
648 select SIBYTE_BCM1x80
650 select SYS_HAS_CPU_SB1
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select SYS_SUPPORTS_HIGHMEM
653 select SYS_SUPPORTS_LITTLE_ENDIAN
654 select ZONE_DMA32 if 64BIT
657 bool "SNI RM200/300/400"
658 select FW_ARC if CPU_LITTLE_ENDIAN
659 select FW_ARC32 if CPU_LITTLE_ENDIAN
660 select FW_SNIPROM if CPU_BIG_ENDIAN
661 select ARCH_MAY_HAVE_PC_FDC
665 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
666 select DMA_NONCOHERENT
667 select GENERIC_ISA_DMA
668 select HAVE_PCSPKR_PLATFORM
675 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
676 select SYS_HAS_CPU_R4X00
677 select SYS_HAS_CPU_R5000
678 select SYS_HAS_CPU_R10000
679 select R5000_CPU_SCACHE
680 select SYS_HAS_EARLY_PRINTK
681 select SYS_SUPPORTS_32BIT_KERNEL
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_HIGHMEM
685 select SYS_SUPPORTS_LITTLE_ENDIAN
687 The SNI RM200/300/400 are MIPS-based machines manufactured by
688 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
689 Technology and now in turn merged with Fujitsu. Say Y here to
690 support this machine type.
693 bool "Toshiba TX39 series based machines"
696 bool "Toshiba TX49 series based machines"
698 config MIKROTIK_RB532
699 bool "Mikrotik RB532 boards"
702 select DMA_NONCOHERENT
705 select SYS_HAS_CPU_MIPS32_R1
706 select SYS_SUPPORTS_32BIT_KERNEL
707 select SYS_SUPPORTS_LITTLE_ENDIAN
710 select ARCH_REQUIRE_GPIOLIB
712 Support the Mikrotik(tm) RouterBoard 532 series,
713 based on the IDT RC32434 SoC.
715 config CAVIUM_OCTEON_SOC
716 bool "Cavium Networks Octeon SoC based boards"
718 select 64BIT_PHYS_ADDR
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
723 select SYS_SUPPORTS_HOTPLUG_CPU
724 select SYS_HAS_EARLY_PRINTK
725 select SYS_HAS_CPU_CAVIUM_OCTEON
729 select USB_ARCH_HAS_OHCI
730 select USB_ARCH_HAS_EHCI
732 select ARCH_REQUIRE_GPIOLIB
734 This option supports all of the Octeon reference boards from Cavium
735 Networks. It builds a kernel that dynamically determines the Octeon
736 CPU type and supports all known board reference implementations.
737 Some of the supported boards are:
744 Say Y here for most Octeon reference boards.
747 bool "Netlogic XLR/XLS based systems"
750 select SYS_HAS_CPU_XLR
751 select SYS_SUPPORTS_SMP
754 select SYS_SUPPORTS_32BIT_KERNEL
755 select SYS_SUPPORTS_64BIT_KERNEL
756 select 64BIT_PHYS_ADDR
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_HIGHMEM
760 select NR_CPUS_DEFAULT_32
764 select ZONE_DMA32 if 64BIT
766 select SYS_HAS_EARLY_PRINTK
767 select USB_ARCH_HAS_OHCI if USB_SUPPORT
768 select USB_ARCH_HAS_EHCI if USB_SUPPORT
769 select SYS_SUPPORTS_ZBOOT
770 select SYS_SUPPORTS_ZBOOT_UART16550
772 Support for systems based on Netlogic XLR and XLS processors.
773 Say Y here if you have a XLR or XLS based board.
776 bool "Netlogic XLP based systems"
779 select SYS_HAS_CPU_XLP
780 select SYS_SUPPORTS_SMP
782 select SYS_SUPPORTS_32BIT_KERNEL
783 select SYS_SUPPORTS_64BIT_KERNEL
784 select 64BIT_PHYS_ADDR
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_LITTLE_ENDIAN
787 select SYS_SUPPORTS_HIGHMEM
789 select NR_CPUS_DEFAULT_32
793 select ZONE_DMA32 if 64BIT
795 select SYS_HAS_EARLY_PRINTK
797 select SYS_SUPPORTS_ZBOOT
798 select SYS_SUPPORTS_ZBOOT_UART16550
800 This board is based on Netlogic XLP Processor.
801 Say Y here if you have a XLP based board.
805 source "arch/mips/alchemy/Kconfig"
806 source "arch/mips/ath79/Kconfig"
807 source "arch/mips/bcm47xx/Kconfig"
808 source "arch/mips/bcm63xx/Kconfig"
809 source "arch/mips/jazz/Kconfig"
810 source "arch/mips/jz4740/Kconfig"
811 source "arch/mips/lantiq/Kconfig"
812 source "arch/mips/lasat/Kconfig"
813 source "arch/mips/pmcs-msp71xx/Kconfig"
814 source "arch/mips/powertv/Kconfig"
815 source "arch/mips/ralink/Kconfig"
816 source "arch/mips/sgi-ip27/Kconfig"
817 source "arch/mips/sibyte/Kconfig"
818 source "arch/mips/txx9/Kconfig"
819 source "arch/mips/vr41xx/Kconfig"
820 source "arch/mips/cavium-octeon/Kconfig"
821 source "arch/mips/loongson/Kconfig"
822 source "arch/mips/loongson1/Kconfig"
823 source "arch/mips/netlogic/Kconfig"
827 config RWSEM_GENERIC_SPINLOCK
831 config RWSEM_XCHGADD_ALGORITHM
834 config ARCH_HAS_ILOG2_U32
838 config ARCH_HAS_ILOG2_U64
842 config GENERIC_HWEIGHT
846 config GENERIC_CALIBRATE_DELAY
850 config SCHED_OMIT_FRAME_POINTER
855 # Select some configuration options automatically based on user selections.
860 config ARCH_MAY_HAVE_PC_FDC
906 select ARCH_REQUIRE_GPIOLIB
912 config ARCH_DMA_ADDR_T_64BIT
913 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
918 config DMA_NONCOHERENT
920 select NEED_DMA_MAP_STATE
922 config NEED_DMA_MAP_STATE
925 config SYS_HAS_EARLY_PRINTK
929 bool "Support for hot-pluggable CPUs"
930 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
932 Say Y here to allow turning CPUs off and on. CPUs can be
933 controlled through /sys/devices/system/cpu.
934 (Note: power management support will enable this option
935 automatically on SMP systems. )
936 Say N if you want to disable CPU hotplug.
938 config SYS_SUPPORTS_HOTPLUG_CPU
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 # Endianness 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 "Endianness 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
1004 config SYS_SUPPORTS_APM_EMULATION
1007 config SYS_SUPPORTS_BIG_ENDIAN
1010 config SYS_SUPPORTS_LITTLE_ENDIAN
1013 config SYS_SUPPORTS_HUGETLBFS
1015 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1018 config MIPS_HUGE_TLB_SUPPORT
1019 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1042 config PCI_GT64XXX_PCI0
1045 config NO_EXCEPT_FILL
1052 select DMA_NONCOHERENT
1054 select SWAP_IO_SPACE
1055 select SYS_HAS_CPU_R5500
1056 select SYS_SUPPORTS_32BIT_KERNEL
1057 select SYS_SUPPORTS_64BIT_KERNEL
1058 select SYS_SUPPORTS_BIG_ENDIAN
1065 select DMA_NONCOHERENT
1066 select SYS_HAS_CPU_MIPS32_R2
1067 select SYS_SUPPORTS_32BIT_KERNEL
1068 select SYS_SUPPORTS_LITTLE_ENDIAN
1069 select SYS_SUPPORTS_BIG_ENDIAN
1070 select CPU_MIPSR2_IRQ_VI
1076 config SWAP_IO_SPACE
1079 config SGI_HAS_INDYDOG
1091 config SGI_HAS_ZILOG
1094 config SGI_HAS_I8042
1097 config DEFAULT_SGI_PARTITION
1109 config MIPS_L1_CACHE_SHIFT
1111 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1112 default "6" if MIPS_CPU_SCACHE
1113 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1116 config HAVE_STD_PC_SERIAL_PORT
1120 bool "ARC console support"
1121 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1125 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1130 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1139 menu "CPU selection"
1145 config CPU_LOONGSON2E
1147 depends on SYS_HAS_CPU_LOONGSON2E
1148 select CPU_LOONGSON2
1150 The Loongson 2E processor implements the MIPS III instruction set
1151 with many extensions.
1153 It has an internal FPGA northbridge, which is compatible to
1156 config CPU_LOONGSON2F
1158 depends on SYS_HAS_CPU_LOONGSON2F
1159 select CPU_LOONGSON2
1160 select ARCH_REQUIRE_GPIOLIB
1162 The Loongson 2F processor implements the MIPS III instruction set
1163 with many extensions.
1165 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1166 have a similar programming interface with FPGA northbridge used in
1169 config CPU_LOONGSON1B
1171 depends on SYS_HAS_CPU_LOONGSON1B
1172 select CPU_LOONGSON1
1174 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1175 release 2 instruction set.
1177 config CPU_MIPS32_R1
1178 bool "MIPS32 Release 1"
1179 depends on SYS_HAS_CPU_MIPS32_R1
1180 select CPU_HAS_PREFETCH
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_HIGHMEM
1184 Choose this option to build a kernel for release 1 or later of the
1185 MIPS32 architecture. Most modern embedded systems with a 32-bit
1186 MIPS processor are based on a MIPS32 processor. If you know the
1187 specific type of processor in your system, choose those that one
1188 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1189 Release 2 of the MIPS32 architecture is available since several
1190 years so chances are you even have a MIPS32 Release 2 processor
1191 in which case you should choose CPU_MIPS32_R2 instead for better
1194 config CPU_MIPS32_R2
1195 bool "MIPS32 Release 2"
1196 depends on SYS_HAS_CPU_MIPS32_R2
1197 select CPU_HAS_PREFETCH
1198 select CPU_SUPPORTS_32BIT_KERNEL
1199 select CPU_SUPPORTS_HIGHMEM
1202 Choose this option to build a kernel for release 2 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.
1208 config CPU_MIPS64_R1
1209 bool "MIPS64 Release 1"
1210 depends on SYS_HAS_CPU_MIPS64_R1
1211 select CPU_HAS_PREFETCH
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1214 select CPU_SUPPORTS_HIGHMEM
1215 select CPU_SUPPORTS_HUGEPAGES
1217 Choose this option to build a kernel for release 1 or later of the
1218 MIPS64 architecture. Many modern embedded systems with a 64-bit
1219 MIPS processor are based on a MIPS64 processor. If you know the
1220 specific type of processor in your system, choose those that one
1221 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1222 Release 2 of the MIPS64 architecture is available since several
1223 years so chances are you even have a MIPS64 Release 2 processor
1224 in which case you should choose CPU_MIPS64_R2 instead for better
1227 config CPU_MIPS64_R2
1228 bool "MIPS64 Release 2"
1229 depends on SYS_HAS_CPU_MIPS64_R2
1230 select CPU_HAS_PREFETCH
1231 select CPU_SUPPORTS_32BIT_KERNEL
1232 select CPU_SUPPORTS_64BIT_KERNEL
1233 select CPU_SUPPORTS_HIGHMEM
1234 select CPU_SUPPORTS_HUGEPAGES
1236 Choose this option to build a kernel for release 2 or later of the
1237 MIPS64 architecture. Many modern embedded systems with a 64-bit
1238 MIPS processor are based on a MIPS64 processor. If you know the
1239 specific type of processor in your system, choose those that one
1240 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1244 depends on SYS_HAS_CPU_R3000
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_HIGHMEM
1249 Please make sure to pick the right CPU type. Linux/MIPS is not
1250 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1251 *not* work on R4000 machines and vice versa. However, since most
1252 of the supported machines have an R4000 (or similar) CPU, R4x00
1253 might be a safe bet. If the resulting kernel does not work,
1254 try to recompile with R3000.
1258 depends on SYS_HAS_CPU_TX39XX
1259 select CPU_SUPPORTS_32BIT_KERNEL
1263 depends on SYS_HAS_CPU_VR41XX
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_64BIT_KERNEL
1267 The options selects support for the NEC VR4100 series of processors.
1268 Only choose this option if you have one of these processors as a
1269 kernel built with this option will not run on any other type of
1270 processor or vice versa.
1274 depends on SYS_HAS_CPU_R4300
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1278 MIPS Technologies R4300-series processors.
1282 depends on SYS_HAS_CPU_R4X00
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select CPU_SUPPORTS_HUGEPAGES
1287 MIPS Technologies R4000-series processors other than 4300, including
1288 the R4000, R4400, R4600, and 4700.
1292 depends on SYS_HAS_CPU_TX49XX
1293 select CPU_HAS_PREFETCH
1294 select CPU_SUPPORTS_32BIT_KERNEL
1295 select CPU_SUPPORTS_64BIT_KERNEL
1296 select CPU_SUPPORTS_HUGEPAGES
1300 depends on SYS_HAS_CPU_R5000
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1303 select CPU_SUPPORTS_HUGEPAGES
1305 MIPS Technologies R5000-series processors other than the Nevada.
1309 depends on SYS_HAS_CPU_R5432
1310 select CPU_SUPPORTS_32BIT_KERNEL
1311 select CPU_SUPPORTS_64BIT_KERNEL
1312 select CPU_SUPPORTS_HUGEPAGES
1316 depends on SYS_HAS_CPU_R5500
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1319 select CPU_SUPPORTS_HUGEPAGES
1321 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1326 depends on SYS_HAS_CPU_R6000
1327 select CPU_SUPPORTS_32BIT_KERNEL
1329 MIPS Technologies R6000 and R6000A series processors. Note these
1330 processors are extremely rare and the support for them is incomplete.
1334 depends on SYS_HAS_CPU_NEVADA
1335 select CPU_SUPPORTS_32BIT_KERNEL
1336 select CPU_SUPPORTS_64BIT_KERNEL
1337 select CPU_SUPPORTS_HUGEPAGES
1339 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1343 depends on SYS_HAS_CPU_R8000
1344 select CPU_HAS_PREFETCH
1345 select CPU_SUPPORTS_64BIT_KERNEL
1347 MIPS Technologies R8000 processors. Note these processors are
1348 uncommon and the support for them is incomplete.
1352 depends on SYS_HAS_CPU_R10000
1353 select CPU_HAS_PREFETCH
1354 select CPU_SUPPORTS_32BIT_KERNEL
1355 select CPU_SUPPORTS_64BIT_KERNEL
1356 select CPU_SUPPORTS_HIGHMEM
1357 select CPU_SUPPORTS_HUGEPAGES
1359 MIPS Technologies R10000-series processors.
1363 depends on SYS_HAS_CPU_RM7000
1364 select CPU_HAS_PREFETCH
1365 select CPU_SUPPORTS_32BIT_KERNEL
1366 select CPU_SUPPORTS_64BIT_KERNEL
1367 select CPU_SUPPORTS_HIGHMEM
1368 select CPU_SUPPORTS_HUGEPAGES
1372 depends on SYS_HAS_CPU_SB1
1373 select CPU_SUPPORTS_32BIT_KERNEL
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_HUGEPAGES
1377 select WEAK_ORDERING
1379 config CPU_CAVIUM_OCTEON
1380 bool "Cavium Octeon processor"
1381 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1382 select ARCH_SPARSEMEM_ENABLE
1383 select CPU_HAS_PREFETCH
1384 select CPU_SUPPORTS_64BIT_KERNEL
1385 select SYS_SUPPORTS_SMP
1386 select NR_CPUS_DEFAULT_16
1387 select WEAK_ORDERING
1388 select CPU_SUPPORTS_HIGHMEM
1389 select CPU_SUPPORTS_HUGEPAGES
1392 select USB_EHCI_BIG_ENDIAN_MMIO
1394 The Cavium Octeon processor is a highly integrated chip containing
1395 many ethernet hardware widgets for networking tasks. The processor
1396 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1397 Full details can be found at http://www.caviumnetworks.com.
1399 config CPU_BMIPS3300
1401 depends on SYS_HAS_CPU_BMIPS3300
1404 Broadcom BMIPS3300 processors.
1406 config CPU_BMIPS4350
1408 depends on SYS_HAS_CPU_BMIPS4350
1410 select SYS_SUPPORTS_SMP
1411 select SYS_SUPPORTS_HOTPLUG_CPU
1413 Broadcom BMIPS4350 ("VIPER") processors.
1415 config CPU_BMIPS4380
1417 depends on SYS_HAS_CPU_BMIPS4380
1419 select SYS_SUPPORTS_SMP
1420 select SYS_SUPPORTS_HOTPLUG_CPU
1422 Broadcom BMIPS4380 processors.
1424 config CPU_BMIPS5000
1426 depends on SYS_HAS_CPU_BMIPS5000
1428 select CPU_SUPPORTS_HIGHMEM
1429 select MIPS_CPU_SCACHE
1430 select SYS_SUPPORTS_SMP
1431 select SYS_SUPPORTS_HOTPLUG_CPU
1433 Broadcom BMIPS5000 processors.
1436 bool "Netlogic XLR SoC"
1437 depends on SYS_HAS_CPU_XLR
1438 select CPU_SUPPORTS_32BIT_KERNEL
1439 select CPU_SUPPORTS_64BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1441 select CPU_SUPPORTS_HUGEPAGES
1442 select WEAK_ORDERING
1443 select WEAK_REORDERING_BEYOND_LLSC
1445 Netlogic Microsystems XLR/XLS processors.
1448 bool "Netlogic XLP SoC"
1449 depends on SYS_HAS_CPU_XLP
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_64BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1453 select WEAK_ORDERING
1454 select WEAK_REORDERING_BEYOND_LLSC
1455 select CPU_HAS_PREFETCH
1458 Netlogic Microsystems XLP processors.
1462 config CPU_NOP_WORKAROUNDS
1465 config CPU_JUMP_WORKAROUNDS
1468 config CPU_LOONGSON2F_WORKAROUNDS
1469 bool "Loongson 2F Workarounds"
1471 select CPU_NOP_WORKAROUNDS
1472 select CPU_JUMP_WORKAROUNDS
1474 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1475 require workarounds. Without workarounds the system may hang
1476 unexpectedly. For more information please refer to the gas
1477 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1479 Loongson 2F03 and later have fixed these issues and no workarounds
1480 are needed. The workarounds have no significant side effect on them
1481 but may decrease the performance of the system so this option should
1482 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1485 If unsure, please say Y.
1486 endif # CPU_LOONGSON2F
1488 config SYS_SUPPORTS_ZBOOT
1490 select HAVE_KERNEL_GZIP
1491 select HAVE_KERNEL_BZIP2
1492 select HAVE_KERNEL_LZ4
1493 select HAVE_KERNEL_LZMA
1494 select HAVE_KERNEL_LZO
1495 select HAVE_KERNEL_XZ
1497 config SYS_SUPPORTS_ZBOOT_UART16550
1499 select SYS_SUPPORTS_ZBOOT
1501 config CPU_LOONGSON2
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_HUGEPAGES
1508 config CPU_LOONGSON1
1512 select CPU_HAS_PREFETCH
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_HIGHMEM
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select DMA_NONCOHERENT
1522 select SWAP_IO_SPACE
1523 select WEAK_ORDERING
1525 config SYS_HAS_CPU_LOONGSON2E
1528 config SYS_HAS_CPU_LOONGSON2F
1530 select CPU_SUPPORTS_CPUFREQ
1531 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1532 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1534 config SYS_HAS_CPU_LOONGSON1B
1537 config SYS_HAS_CPU_MIPS32_R1
1540 config SYS_HAS_CPU_MIPS32_R2
1543 config SYS_HAS_CPU_MIPS64_R1
1546 config SYS_HAS_CPU_MIPS64_R2
1549 config SYS_HAS_CPU_R3000
1552 config SYS_HAS_CPU_TX39XX
1555 config SYS_HAS_CPU_VR41XX
1558 config SYS_HAS_CPU_R4300
1561 config SYS_HAS_CPU_R4X00
1564 config SYS_HAS_CPU_TX49XX
1567 config SYS_HAS_CPU_R5000
1570 config SYS_HAS_CPU_R5432
1573 config SYS_HAS_CPU_R5500
1576 config SYS_HAS_CPU_R6000
1579 config SYS_HAS_CPU_NEVADA
1582 config SYS_HAS_CPU_R8000
1585 config SYS_HAS_CPU_R10000
1588 config SYS_HAS_CPU_RM7000
1591 config SYS_HAS_CPU_SB1
1594 config SYS_HAS_CPU_CAVIUM_OCTEON
1597 config SYS_HAS_CPU_BMIPS3300
1600 config SYS_HAS_CPU_BMIPS4350
1603 config SYS_HAS_CPU_BMIPS4380
1606 config SYS_HAS_CPU_BMIPS5000
1609 config SYS_HAS_CPU_XLR
1612 config SYS_HAS_CPU_XLP
1616 # CPU may reorder R->R, R->W, W->R, W->W
1617 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1619 config WEAK_ORDERING
1623 # CPU may reorder reads and writes beyond LL/SC
1624 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1626 config WEAK_REORDERING_BEYOND_LLSC
1631 # These two indicate any level of the MIPS32 and MIPS64 architecture
1635 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1639 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1642 # These two indicate the revision of the architecture, either Release 1 or Release 2
1646 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1650 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1652 config SYS_SUPPORTS_32BIT_KERNEL
1654 config SYS_SUPPORTS_64BIT_KERNEL
1656 config CPU_SUPPORTS_32BIT_KERNEL
1658 config CPU_SUPPORTS_64BIT_KERNEL
1660 config CPU_SUPPORTS_CPUFREQ
1662 config CPU_SUPPORTS_ADDRWINCFG
1664 config CPU_SUPPORTS_HUGEPAGES
1666 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1668 config MIPS_PGD_C0_CONTEXT
1670 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1673 # Set to y for ptrace access to watch registers.
1675 config HARDWARE_WATCHPOINTS
1677 default y if CPU_MIPSR1 || CPU_MIPSR2
1682 prompt "Kernel code model"
1684 You should only select this option if you have a workload that
1685 actually benefits from 64-bit processing or if your machine has
1686 large memory. You will only be presented a single option in this
1687 menu if your system does not support both 32-bit and 64-bit kernels.
1690 bool "32-bit kernel"
1691 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1694 Select this option if you want to build a 32-bit kernel.
1696 bool "64-bit kernel"
1697 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1699 Select this option if you want to build a 64-bit kernel.
1704 bool "KVM Guest Kernel"
1705 depends on BROKEN_ON_SMP
1707 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1709 config KVM_HOST_FREQ
1710 int "KVM Host Processor Frequency (MHz)"
1711 depends on KVM_GUEST
1714 Select this option if building a guest kernel for KVM to skip
1715 RTC emulation when determining guest CPU Frequency. Instead, the guest
1716 processor frequency is automatically derived from the host frequency.
1719 prompt "Kernel page size"
1720 default PAGE_SIZE_4KB
1722 config PAGE_SIZE_4KB
1724 depends on !CPU_LOONGSON2
1726 This option select the standard 4kB Linux page size. On some
1727 R3000-family processors this is the only available page size. Using
1728 4kB page size will minimize memory consumption and is therefore
1729 recommended for low memory systems.
1731 config PAGE_SIZE_8KB
1733 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1735 Using 8kB page size will result in higher performance kernel at
1736 the price of higher memory consumption. This option is available
1737 only on R8000 and cnMIPS processors. Note that you will need a
1738 suitable Linux distribution to support this.
1740 config PAGE_SIZE_16KB
1742 depends on !CPU_R3000 && !CPU_TX39XX
1744 Using 16kB 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 processors. Note that you will need a suitable
1747 Linux distribution to support this.
1749 config PAGE_SIZE_32KB
1751 depends on CPU_CAVIUM_OCTEON
1753 Using 32kB page size will result in higher performance kernel at
1754 the price of higher memory consumption. This option is available
1755 only on cnMIPS cores. Note that you will need a suitable Linux
1756 distribution to support this.
1758 config PAGE_SIZE_64KB
1760 depends on !CPU_R3000 && !CPU_TX39XX
1762 Using 64kB page size will result in higher performance kernel at
1763 the price of higher memory consumption. This option is available on
1764 all non-R3000 family processor. Not that at the time of this
1765 writing this option is still high experimental.
1769 config FORCE_MAX_ZONEORDER
1770 int "Maximum zone order"
1771 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1772 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1773 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1774 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1775 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1776 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1780 The kernel memory allocator divides physically contiguous memory
1781 blocks into "zones", where each zone is a power of two number of
1782 pages. This option selects the largest power of two that the kernel
1783 keeps in the memory allocator. If you need to allocate very large
1784 blocks of physically contiguous memory, then you may need to
1785 increase this value.
1787 This config option is actually maximum order plus one. For example,
1788 a value of 11 means that the largest free memory block is 2^10 pages.
1790 The page size is not necessarily 4KB. Keep this in mind
1791 when choosing a value for this option.
1794 bool "Use GIC global counter for clock events"
1795 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1797 Use the GIC global counter for the clock events. The R4K clock
1798 event driver is always present, so if the platform ends up not
1799 detecting a GIC, it will fall back to the R4K timer for the
1800 generation of clock events.
1805 config IP22_CPU_SCACHE
1810 # Support for a MIPS32 / MIPS64 style S-caches
1812 config MIPS_CPU_SCACHE
1816 config R5000_CPU_SCACHE
1820 config RM7000_CPU_SCACHE
1824 config SIBYTE_DMA_PAGEOPS
1825 bool "Use DMA to clear/copy pages"
1828 Instead of using the CPU to zero and copy pages, use a Data Mover
1829 channel. These DMA channels are otherwise unused by the standard
1830 SiByte Linux port. Seems to give a small performance benefit.
1832 config CPU_HAS_PREFETCH
1835 config CPU_GENERIC_DUMP_TLB
1837 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1841 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1843 config CPU_R4K_CACHE_TLB
1845 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1848 prompt "MIPS MT options"
1850 config MIPS_MT_DISABLED
1851 bool "Disable multithreading support."
1853 Use this option if your workload can't take advantage of
1854 MIPS hardware multithreading support. On systems that don't have
1855 the option of an MT-enabled processor this option will be the only
1856 option in this menu.
1859 bool "Use 1 TC on each available VPE for SMP"
1860 depends on SYS_SUPPORTS_MULTITHREADING
1861 select CPU_MIPSR2_IRQ_VI
1862 select CPU_MIPSR2_IRQ_EI
1865 select SYS_SUPPORTS_SCHED_SMT if SMP
1866 select SYS_SUPPORTS_SMP
1868 select MIPS_PERF_SHARED_TC_COUNTERS
1870 This is a kernel model which is known a VSMP but lately has been
1871 marketesed into SMVP.
1872 Virtual SMP uses the processor's VPEs to implement virtual
1873 processors. In currently available configuration of the 34K processor
1874 this allows for a dual processor. Both processors will share the same
1875 primary caches; each will obtain the half of the TLB for it's own
1876 exclusive use. For a layman this model can be described as similar to
1877 what Intel calls Hyperthreading.
1879 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1882 bool "SMTC: Use all TCs on all VPEs for SMP"
1883 depends on CPU_MIPS32_R2
1884 #depends on CPU_MIPS64_R2 # once there is hardware ...
1885 depends on SYS_SUPPORTS_MULTITHREADING
1886 select CPU_MIPSR2_IRQ_VI
1887 select CPU_MIPSR2_IRQ_EI
1889 select NR_CPUS_DEFAULT_8
1891 select SYS_SUPPORTS_SMP
1894 This is a kernel model which is known a SMTC or lately has been
1895 marketesed into SMVP.
1896 is presenting the available TC's of the core as processors to Linux.
1897 On currently available 34K processors this means a Linux system will
1898 see up to 5 processors. The implementation of the SMTC kernel differs
1899 significantly from VSMP and cannot efficiently coexist in the same
1900 kernel binary so the choice between VSMP and SMTC is a compile time
1903 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1911 bool "SMT (multithreading) scheduler support"
1912 depends on SYS_SUPPORTS_SCHED_SMT
1915 SMT scheduler support improves the CPU scheduler's decision making
1916 when dealing with MIPS MT enabled cores at a cost of slightly
1917 increased overhead in some places. If unsure say N here.
1919 config SYS_SUPPORTS_SCHED_SMT
1922 config SYS_SUPPORTS_MULTITHREADING
1925 config MIPS_MT_FPAFF
1926 bool "Dynamic FPU affinity for FP-intensive threads"
1928 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1930 config MIPS_VPE_LOADER
1931 bool "VPE loader support."
1932 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1933 select CPU_MIPSR2_IRQ_VI
1934 select CPU_MIPSR2_IRQ_EI
1937 Includes a loader for loading an elf relocatable object
1938 onto another VPE and running it.
1940 config MIPS_MT_SMTC_IM_BACKSTOP
1941 bool "Use per-TC register bits as backstop for inhibited IM bits"
1942 depends on MIPS_MT_SMTC
1945 To support multiple TC microthreads acting as "CPUs" within
1946 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1947 during interrupt handling. To support legacy drivers and interrupt
1948 controller management code, SMTC has a "backstop" to track and
1949 if necessary restore the interrupt mask. This has some performance
1950 impact on interrupt service overhead.
1952 config MIPS_MT_SMTC_IRQAFF
1953 bool "Support IRQ affinity API"
1954 depends on MIPS_MT_SMTC
1957 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1958 for SMTC Linux kernel. Requires platform support, of which
1959 an example can be found in the MIPS kernel i8259 and Malta
1960 platform code. Adds some overhead to interrupt dispatch, and
1961 should be used only if you know what you are doing.
1963 config MIPS_VPE_LOADER_TOM
1964 bool "Load VPE program into memory hidden from linux"
1965 depends on MIPS_VPE_LOADER
1968 The loader can use memory that is present but has been hidden from
1969 Linux using the kernel command line option "mem=xxMB". It's up to
1970 you to ensure the amount you put in the option and the space your
1971 program requires is less or equal to the amount physically present.
1973 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1974 config MIPS_VPE_APSP_API
1975 bool "Enable support for AP/SP API (RTLX)"
1976 depends on MIPS_VPE_LOADER
1980 bool "MIPS CMP framework support"
1981 depends on SYS_SUPPORTS_MIPS_CMP
1984 select SYS_SUPPORTS_SMP
1985 select SYS_SUPPORTS_SCHED_SMT if SMP
1986 select WEAK_ORDERING
1989 This is a placeholder option for the GCMP work. It will need to
1990 be handled differently...
1992 config SB1_PASS_1_WORKAROUNDS
1994 depends on CPU_SB1_PASS_1
1997 config SB1_PASS_2_WORKAROUNDS
1999 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2002 config SB1_PASS_2_1_WORKAROUNDS
2004 depends on CPU_SB1 && CPU_SB1_PASS_2
2008 config 64BIT_PHYS_ADDR
2011 config ARCH_PHYS_ADDR_T_64BIT
2012 def_bool 64BIT_PHYS_ADDR
2014 config CPU_HAS_SMARTMIPS
2015 depends on SYS_SUPPORTS_SMARTMIPS
2016 bool "Support for the SmartMIPS ASE"
2018 SmartMIPS is a extension of the MIPS32 architecture aimed at
2019 increased security at both hardware and software level for
2020 smartcards. Enabling this option will allow proper use of the
2021 SmartMIPS instructions by Linux applications. However a kernel with
2022 this option will not work on a MIPS core without SmartMIPS core. If
2023 you don't know you probably don't have SmartMIPS and should say N
2026 config CPU_MICROMIPS
2027 depends on SYS_SUPPORTS_MICROMIPS
2028 bool "Build kernel using microMIPS ISA"
2030 When this option is enabled the kernel will be built using the
2040 # Vectored interrupt mode is an R2 feature
2042 config CPU_MIPSR2_IRQ_VI
2046 # Extended interrupt mode is an R2 feature
2048 config CPU_MIPSR2_IRQ_EI
2053 depends on !CPU_R3000
2059 config CPU_DADDI_WORKAROUNDS
2062 config CPU_R4000_WORKAROUNDS
2064 select CPU_R4400_WORKAROUNDS
2066 config CPU_R4400_WORKAROUNDS
2070 # - Highmem only makes sense for the 32-bit kernel.
2071 # - The current highmem code will only work properly on physically indexed
2072 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2073 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2074 # moment we protect the user and offer the highmem option only on machines
2075 # where it's known to be safe. This will not offer highmem on a few systems
2076 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2077 # indexed CPUs but we're playing safe.
2078 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2079 # know they might have memory configurations that could make use of highmem
2083 bool "High Memory Support"
2084 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2086 config CPU_SUPPORTS_HIGHMEM
2089 config SYS_SUPPORTS_HIGHMEM
2092 config SYS_SUPPORTS_SMARTMIPS
2095 config SYS_SUPPORTS_MICROMIPS
2098 config ARCH_FLATMEM_ENABLE
2100 depends on !NUMA && !CPU_LOONGSON2
2102 config ARCH_DISCONTIGMEM_ENABLE
2104 default y if SGI_IP27
2106 Say Y to support efficient handling of discontiguous physical memory,
2107 for architectures which are either NUMA (Non-Uniform Memory Access)
2108 or have huge holes in the physical address space for other reasons.
2109 See <file:Documentation/vm/numa> for more.
2111 config ARCH_SPARSEMEM_ENABLE
2113 select SPARSEMEM_STATIC
2117 depends on SYS_SUPPORTS_NUMA
2119 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2120 Access). This option improves performance on systems with more
2121 than two nodes; on two node systems it is generally better to
2122 leave it disabled; on single node systems disable this option
2125 config SYS_SUPPORTS_NUMA
2131 depends on NEED_MULTIPLE_NODES
2133 config HW_PERF_EVENTS
2134 bool "Enable hardware performance counter support for perf events"
2135 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2138 Enable hardware performance counter support for perf events. If
2139 disabled, perf events will use software events only.
2144 bool "Multi-Processing support"
2145 depends on SYS_SUPPORTS_SMP
2146 select USE_GENERIC_SMP_HELPERS
2148 This enables support for systems with more than one CPU. If you have
2149 a system with only one CPU, like most personal computers, say N. If
2150 you have a system with more than one CPU, say Y.
2152 If you say N here, the kernel will run on single and multiprocessor
2153 machines, but will use only one CPU of a multiprocessor machine. If
2154 you say Y here, the kernel will run on many, but not all,
2155 singleprocessor machines. On a singleprocessor machine, the kernel
2156 will run faster if you say N here.
2158 People using multiprocessor machines who say Y here should also say
2159 Y to "Enhanced Real Time Clock Support", below.
2161 See also the SMP-HOWTO available at
2162 <http://www.tldp.org/docs.html#howto>.
2164 If you don't know what to do here, say N.
2169 config SYS_SUPPORTS_MIPS_CMP
2172 config SYS_SUPPORTS_SMP
2175 config NR_CPUS_DEFAULT_4
2178 config NR_CPUS_DEFAULT_8
2181 config NR_CPUS_DEFAULT_16
2184 config NR_CPUS_DEFAULT_32
2187 config NR_CPUS_DEFAULT_64
2191 int "Maximum number of CPUs (2-64)"
2194 default "4" if NR_CPUS_DEFAULT_4
2195 default "8" if NR_CPUS_DEFAULT_8
2196 default "16" if NR_CPUS_DEFAULT_16
2197 default "32" if NR_CPUS_DEFAULT_32
2198 default "64" if NR_CPUS_DEFAULT_64
2200 This allows you to specify the maximum number of CPUs which this
2201 kernel will support. The maximum supported value is 32 for 32-bit
2202 kernel and 64 for 64-bit kernels; the minimum value which makes
2203 sense is 1 for Qemu (useful only for kernel debugging purposes)
2204 and 2 for all others.
2206 This is purely to save memory - each supported CPU adds
2207 approximately eight kilobytes to the kernel image. For best
2208 performance should round up your number of processors to the next
2211 config MIPS_PERF_SHARED_TC_COUNTERS
2215 # Timer Interrupt Frequency Configuration
2219 prompt "Timer frequency"
2222 Allows the configuration of the timer frequency.
2225 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2228 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2231 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2234 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2240 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2243 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2247 config SYS_SUPPORTS_48HZ
2250 config SYS_SUPPORTS_100HZ
2253 config SYS_SUPPORTS_128HZ
2256 config SYS_SUPPORTS_250HZ
2259 config SYS_SUPPORTS_256HZ
2262 config SYS_SUPPORTS_1000HZ
2265 config SYS_SUPPORTS_1024HZ
2268 config SYS_SUPPORTS_ARBIT_HZ
2270 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2271 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2272 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2273 !SYS_SUPPORTS_1024HZ
2278 default 100 if HZ_100
2279 default 128 if HZ_128
2280 default 250 if HZ_250
2281 default 256 if HZ_256
2282 default 1000 if HZ_1000
2283 default 1024 if HZ_1024
2285 source "kernel/Kconfig.preempt"
2288 bool "Kexec system call"
2290 kexec is a system call that implements the ability to shutdown your
2291 current kernel, and to start another kernel. It is like a reboot
2292 but it is independent of the system firmware. And like a reboot
2293 you can start any kernel with it, not just Linux.
2295 The name comes from the similarity to the exec system call.
2297 It is an ongoing process to be certain the hardware in a machine
2298 is properly shutdown, so do not be surprised if this code does not
2299 initially work for you. As of this writing the exact hardware
2300 interface is strongly in flux, so no good recommendation can be
2304 bool "Kernel crash dumps"
2306 Generate crash dump after being started by kexec.
2307 This should be normally only set in special crash dump kernels
2308 which are loaded in the main kernel with kexec-tools into
2309 a specially reserved region and then later executed after
2310 a crash by kdump/kexec. The crash dump kernel must be compiled
2311 to a memory address not used by the main kernel or firmware using
2314 config PHYSICAL_START
2315 hex "Physical address where the kernel is loaded"
2316 default "0xffffffff84000000" if 64BIT
2317 default "0x84000000" if 32BIT
2318 depends on CRASH_DUMP
2320 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2321 If you plan to use kernel for capturing the crash dump change
2322 this value to start of the reserved region (the "X" value as
2323 specified in the "crashkernel=YM@XM" command line boot parameter
2324 passed to the panic-ed kernel).
2327 bool "Enable seccomp to safely compute untrusted bytecode"
2331 This kernel feature is useful for number crunching applications
2332 that may need to compute untrusted bytecode during their
2333 execution. By using pipes or other transports made available to
2334 the process as file descriptors supporting the read/write
2335 syscalls, it's possible to isolate those applications in
2336 their own address space using seccomp. Once seccomp is
2337 enabled via /proc/<pid>/seccomp, it cannot be disabled
2338 and the task is only allowed to execute a few safe syscalls
2339 defined by each seccomp mode.
2341 If unsure, say Y. Only embedded should say N here.
2343 config CC_STACKPROTECTOR
2344 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2346 This option turns on the -fstack-protector GCC feature. This
2347 feature puts, at the beginning of functions, a canary value on
2348 the stack just before the return address, and validates
2349 the value just before actually returning. Stack based buffer
2350 overflows (that need to overwrite this return address) now also
2351 overwrite the canary, which gets detected and the attack is then
2352 neutralized via a kernel panic.
2354 This feature requires gcc version 4.2 or above.
2359 select OF_EARLY_FLATTREE
2364 config LOCKDEP_SUPPORT
2368 config STACKTRACE_SUPPORT
2372 source "init/Kconfig"
2374 source "kernel/Kconfig.freezer"
2376 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2384 bool "Support for PCI controller"
2385 depends on HW_HAS_PCI
2387 select NO_GENERIC_PCI_IOPORT_MAP
2389 Find out whether you have a PCI motherboard. PCI is the name of a
2390 bus system, i.e. the way the CPU talks to the other stuff inside
2391 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2397 source "drivers/pci/Kconfig"
2399 source "drivers/pci/pcie/Kconfig"
2402 # ISA support is now enabled via select. Too many systems still have the one
2403 # or other ISA chip on the board that users don't know about so don't expect
2404 # users to choose the right thing ...
2411 depends on HW_HAS_EISA
2413 select GENERIC_ISA_DMA
2415 The Extended Industry Standard Architecture (EISA) bus was
2416 developed as an open alternative to the IBM MicroChannel bus.
2418 The EISA bus provided some of the features of the IBM MicroChannel
2419 bus while maintaining backward compatibility with cards made for
2420 the older ISA bus. The EISA bus saw limited use between 1988 and
2421 1995 when it was made obsolete by the PCI bus.
2423 Say Y here if you are building a kernel for an EISA-based machine.
2427 source "drivers/eisa/Kconfig"
2430 bool "TURBOchannel support"
2431 depends on MACH_DECSTATION
2433 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2434 processors. TURBOchannel programming specifications are available
2436 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2438 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2439 Linux driver support status is documented at:
2440 <http://www.linux-mips.org/wiki/DECstation>
2450 select MIPS_EXTERNAL_TIMER
2458 source "drivers/pcmcia/Kconfig"
2460 source "drivers/pci/hotplug/Kconfig"
2463 bool "RapidIO support"
2467 If you say Y here, the kernel will include drivers and
2468 infrastructure code to support RapidIO interconnect devices.
2470 source "drivers/rapidio/Kconfig"
2474 menu "Executable file formats"
2476 source "fs/Kconfig.binfmt"
2481 config MIPS32_COMPAT
2482 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2485 Select this option if you want Linux/MIPS 32-bit binary
2486 compatibility. Since all software available for Linux/MIPS is
2487 currently 32-bit you should say Y here.
2491 depends on MIPS32_COMPAT
2492 select ARCH_WANT_OLD_COMPAT_IPC
2495 config SYSVIPC_COMPAT
2497 depends on COMPAT && SYSVIPC
2501 bool "Kernel support for o32 binaries"
2502 depends on MIPS32_COMPAT
2504 Select this option if you want to run o32 binaries. These are pure
2505 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2506 existing binaries are in this format.
2511 bool "Kernel support for n32 binaries"
2512 depends on MIPS32_COMPAT
2514 Select this option if you want to run n32 binaries. These are
2515 64-bit binaries using 32-bit quantities for addressing and certain
2516 data that would normally be 64-bit. They are used in special
2523 default y if MIPS32_O32 || MIPS32_N32
2527 menu "Power management options"
2529 config ARCH_HIBERNATION_POSSIBLE
2531 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2533 config ARCH_SUSPEND_POSSIBLE
2535 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2537 source "kernel/power/Kconfig"
2541 config MIPS_EXTERNAL_TIMER
2544 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2545 menu "CPU Power Management"
2546 source "drivers/cpufreq/Kconfig"
2550 source "net/Kconfig"
2552 source "drivers/Kconfig"
2554 source "drivers/firmware/Kconfig"
2558 source "arch/mips/Kconfig.debug"
2560 source "security/Kconfig"
2562 source "crypto/Kconfig"
2564 source "lib/Kconfig"
2566 source "arch/mips/kvm/Kconfig"