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 HAVE_GENERIC_HARDIRQS
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_PCI_IOMAP
32 select HAVE_ARCH_JUMP_LABEL
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select IRQ_FORCED_THREADING
36 select HAVE_MEMBLOCK_NODE_MAP
37 select ARCH_DISCARD_MEMBLOCK
38 select GENERIC_SMP_IDLE_THREAD
39 select BUILDTIME_EXTABLE_SORT
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE
42 select HAVE_MOD_ARCH_SPECIFIC
44 select MODULES_USE_ELF_REL if MODULES
45 select MODULES_USE_ELF_RELA if MODULES && 64BIT
46 select CLONE_BACKWARDS
47 select HAVE_DEBUG_STACKOVERFLOW
49 menu "Machine selection"
56 bool "Alchemy processor based machines"
57 select 64BIT_PHYS_ADDR
61 select SYS_HAS_CPU_MIPS32_R1
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_APM_EMULATION
64 select ARCH_REQUIRE_GPIOLIB
65 select SYS_SUPPORTS_ZBOOT
66 select USB_ARCH_HAS_OHCI
67 select USB_ARCH_HAS_EHCI
70 bool "Texas Instruments AR7"
72 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select SYS_SUPPORTS_ZBOOT_UART16550
83 select ARCH_REQUIRE_GPIOLIB
87 Support for the Texas Instruments AR7 System-on-a-Chip
88 family: TNETD7100, 7200 and 7300.
91 bool "Atheros AR71XX/AR724X/AR913X based boards"
92 select ARCH_REQUIRE_GPIOLIB
96 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 NO_EXCEPT_FILL
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_LITTLE_ENDIAN
120 select SYS_HAS_EARLY_PRINTK
122 Support for BCM47XX based boards
125 bool "Broadcom BCM63XX based boards"
129 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_MIPS32_R1
132 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
133 select NR_CPUS_DEFAULT_2
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
449 bool "SGI IP22 (Indy/Indigo2)"
455 select DEFAULT_SGI_PARTITION
456 select DMA_NONCOHERENT
460 select IP22_CPU_SCACHE
462 select GENERIC_ISA_DMA_SUPPORT_BROKEN
464 select SGI_HAS_INDYDOG
470 select SYS_HAS_CPU_R4X00
471 select SYS_HAS_CPU_R5000
473 # Disable EARLY_PRINTK for now since it leads to overwritten prom
474 # memory during early boot on some machines.
476 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
477 # for a more details discussion
479 # select SYS_HAS_EARLY_PRINTK
480 select SYS_SUPPORTS_32BIT_KERNEL
481 select SYS_SUPPORTS_64BIT_KERNEL
482 select SYS_SUPPORTS_BIG_ENDIAN
484 This are the SGI Indy, Challenge S and Indigo2, as well as certain
485 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
486 that runs on these, say Y here.
489 bool "SGI IP27 (Origin200/2000)"
493 select DEFAULT_SGI_PARTITION
495 select SYS_HAS_EARLY_PRINTK
497 select NR_CPUS_DEFAULT_64
498 select SYS_HAS_CPU_R10000
499 select SYS_SUPPORTS_64BIT_KERNEL
500 select SYS_SUPPORTS_BIG_ENDIAN
501 select SYS_SUPPORTS_NUMA
502 select SYS_SUPPORTS_SMP
504 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
505 workstations. To compile a Linux kernel that runs on these, say Y
509 bool "SGI IP28 (Indigo2 R10k)"
515 select DEFAULT_SGI_PARTITION
516 select DMA_NONCOHERENT
517 select GENERIC_ISA_DMA_SUPPORT_BROKEN
523 select SGI_HAS_INDYDOG
529 select SYS_HAS_CPU_R10000
531 # Disable EARLY_PRINTK for now since it leads to overwritten prom
532 # memory during early boot on some machines.
534 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
535 # for a more details discussion
537 # select SYS_HAS_EARLY_PRINTK
538 select SYS_SUPPORTS_64BIT_KERNEL
539 select SYS_SUPPORTS_BIG_ENDIAN
541 This is the SGI Indigo2 with R10000 processor. To compile a Linux
542 kernel that runs on these, say Y here.
551 select DMA_NONCOHERENT
554 select R5000_CPU_SCACHE
555 select RM7000_CPU_SCACHE
556 select SYS_HAS_CPU_R5000
557 select SYS_HAS_CPU_R10000 if BROKEN
558 select SYS_HAS_CPU_RM7000
559 select SYS_HAS_CPU_NEVADA
560 select SYS_SUPPORTS_64BIT_KERNEL
561 select SYS_SUPPORTS_BIG_ENDIAN
563 If you want this kernel to run on SGI O2 workstation, say Y here.
566 bool "Sibyte BCM91120C-CRhine"
569 select SIBYTE_BCM1120
571 select SYS_HAS_CPU_SB1
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_LITTLE_ENDIAN
576 bool "Sibyte BCM91120x-Carmel"
579 select SIBYTE_BCM1120
581 select SYS_HAS_CPU_SB1
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_LITTLE_ENDIAN
586 bool "Sibyte BCM91125C-CRhone"
589 select SIBYTE_BCM1125
591 select SYS_HAS_CPU_SB1
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_HIGHMEM
594 select SYS_SUPPORTS_LITTLE_ENDIAN
597 bool "Sibyte BCM91125E-Rhone"
600 select SIBYTE_BCM1125H
602 select SYS_HAS_CPU_SB1
603 select SYS_SUPPORTS_BIG_ENDIAN
604 select SYS_SUPPORTS_LITTLE_ENDIAN
607 bool "Sibyte BCM91250A-SWARM"
610 select HAVE_PATA_PLATFORM
611 select NR_CPUS_DEFAULT_2
614 select SYS_HAS_CPU_SB1
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select SYS_SUPPORTS_HIGHMEM
617 select SYS_SUPPORTS_LITTLE_ENDIAN
618 select ZONE_DMA32 if 64BIT
620 config SIBYTE_LITTLESUR
621 bool "Sibyte BCM91250C2-LittleSur"
624 select HAVE_PATA_PLATFORM
625 select NR_CPUS_DEFAULT_2
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"
637 select NR_CPUS_DEFAULT_2
640 select SYS_HAS_CPU_SB1
641 select SYS_SUPPORTS_BIG_ENDIAN
642 select SYS_SUPPORTS_LITTLE_ENDIAN
645 bool "Sibyte BCM91480B-BigSur"
648 select NR_CPUS_DEFAULT_4
649 select SIBYTE_BCM1x80
651 select SYS_HAS_CPU_SB1
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_HIGHMEM
654 select SYS_SUPPORTS_LITTLE_ENDIAN
655 select ZONE_DMA32 if 64BIT
658 bool "SNI RM200/300/400"
659 select FW_ARC if CPU_LITTLE_ENDIAN
660 select FW_ARC32 if CPU_LITTLE_ENDIAN
661 select FW_SNIPROM if CPU_BIG_ENDIAN
662 select ARCH_MAY_HAVE_PC_FDC
666 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
667 select DMA_NONCOHERENT
668 select GENERIC_ISA_DMA
669 select HAVE_PCSPKR_PLATFORM
676 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
677 select SYS_HAS_CPU_R4X00
678 select SYS_HAS_CPU_R5000
679 select SYS_HAS_CPU_R10000
680 select R5000_CPU_SCACHE
681 select SYS_HAS_EARLY_PRINTK
682 select SYS_SUPPORTS_32BIT_KERNEL
683 select SYS_SUPPORTS_64BIT_KERNEL
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_HIGHMEM
686 select SYS_SUPPORTS_LITTLE_ENDIAN
688 The SNI RM200/300/400 are MIPS-based machines manufactured by
689 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
690 Technology and now in turn merged with Fujitsu. Say Y here to
691 support this machine type.
694 bool "Toshiba TX39 series based machines"
697 bool "Toshiba TX49 series based machines"
699 config MIKROTIK_RB532
700 bool "Mikrotik RB532 boards"
703 select DMA_NONCOHERENT
706 select SYS_HAS_CPU_MIPS32_R1
707 select SYS_SUPPORTS_32BIT_KERNEL
708 select SYS_SUPPORTS_LITTLE_ENDIAN
711 select ARCH_REQUIRE_GPIOLIB
713 Support the Mikrotik(tm) RouterBoard 532 series,
714 based on the IDT RC32434 SoC.
716 config CAVIUM_OCTEON_SOC
717 bool "Cavium Networks Octeon SoC based boards"
719 select 64BIT_PHYS_ADDR
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_HOTPLUG_CPU
725 select SYS_HAS_EARLY_PRINTK
726 select SYS_HAS_CPU_CAVIUM_OCTEON
730 select USB_ARCH_HAS_OHCI
731 select USB_ARCH_HAS_EHCI
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_LZMA
1493 select HAVE_KERNEL_LZO
1495 config SYS_SUPPORTS_ZBOOT_UART16550
1497 select SYS_SUPPORTS_ZBOOT
1499 config CPU_LOONGSON2
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HIGHMEM
1504 select CPU_SUPPORTS_HUGEPAGES
1506 config CPU_LOONGSON1
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_HIGHMEM
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select DMA_NONCOHERENT
1520 select SWAP_IO_SPACE
1521 select WEAK_ORDERING
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_LOONGSON1B
1535 config SYS_HAS_CPU_MIPS32_R1
1538 config SYS_HAS_CPU_MIPS32_R2
1541 config SYS_HAS_CPU_MIPS64_R1
1544 config SYS_HAS_CPU_MIPS64_R2
1547 config SYS_HAS_CPU_R3000
1550 config SYS_HAS_CPU_TX39XX
1553 config SYS_HAS_CPU_VR41XX
1556 config SYS_HAS_CPU_R4300
1559 config SYS_HAS_CPU_R4X00
1562 config SYS_HAS_CPU_TX49XX
1565 config SYS_HAS_CPU_R5000
1568 config SYS_HAS_CPU_R5432
1571 config SYS_HAS_CPU_R5500
1574 config SYS_HAS_CPU_R6000
1577 config SYS_HAS_CPU_NEVADA
1580 config SYS_HAS_CPU_R8000
1583 config SYS_HAS_CPU_R10000
1586 config SYS_HAS_CPU_RM7000
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
1610 config SYS_HAS_CPU_XLP
1614 # CPU may reorder R->R, R->W, W->R, W->W
1615 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1617 config WEAK_ORDERING
1621 # CPU may reorder reads and writes beyond LL/SC
1622 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1624 config WEAK_REORDERING_BEYOND_LLSC
1629 # These two indicate any level of the MIPS32 and MIPS64 architecture
1633 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1637 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1640 # These two indicate the revision of the architecture, either Release 1 or Release 2
1644 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1648 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1650 config SYS_SUPPORTS_32BIT_KERNEL
1652 config SYS_SUPPORTS_64BIT_KERNEL
1654 config CPU_SUPPORTS_32BIT_KERNEL
1656 config CPU_SUPPORTS_64BIT_KERNEL
1658 config CPU_SUPPORTS_CPUFREQ
1660 config CPU_SUPPORTS_ADDRWINCFG
1662 config CPU_SUPPORTS_HUGEPAGES
1664 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1666 config MIPS_PGD_C0_CONTEXT
1668 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1671 # Set to y for ptrace access to watch registers.
1673 config HARDWARE_WATCHPOINTS
1675 default y if CPU_MIPSR1 || CPU_MIPSR2
1680 prompt "Kernel code model"
1682 You should only select this option if you have a workload that
1683 actually benefits from 64-bit processing or if your machine has
1684 large memory. You will only be presented a single option in this
1685 menu if your system does not support both 32-bit and 64-bit kernels.
1688 bool "32-bit kernel"
1689 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1692 Select this option if you want to build a 32-bit kernel.
1694 bool "64-bit kernel"
1695 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1697 Select this option if you want to build a 64-bit kernel.
1702 bool "KVM Guest Kernel"
1704 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1706 config KVM_HOST_FREQ
1707 int "KVM Host Processor Frequency (MHz)"
1708 depends on KVM_GUEST
1711 Select this option if building a guest kernel for KVM to skip
1712 RTC emulation when determining guest CPU Frequency. Instead, the guest
1713 processor frequency is automatically derived from the host frequency.
1716 prompt "Kernel page size"
1717 default PAGE_SIZE_4KB
1719 config PAGE_SIZE_4KB
1721 depends on !CPU_LOONGSON2
1723 This option select the standard 4kB Linux page size. On some
1724 R3000-family processors this is the only available page size. Using
1725 4kB page size will minimize memory consumption and is therefore
1726 recommended for low memory systems.
1728 config PAGE_SIZE_8KB
1730 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1732 Using 8kB page size will result in higher performance kernel at
1733 the price of higher memory consumption. This option is available
1734 only on R8000 and cnMIPS processors. Note that you will need a
1735 suitable Linux distribution to support this.
1737 config PAGE_SIZE_16KB
1739 depends on !CPU_R3000 && !CPU_TX39XX
1741 Using 16kB page size will result in higher performance kernel at
1742 the price of higher memory consumption. This option is available on
1743 all non-R3000 family processors. Note that you will need a suitable
1744 Linux distribution to support this.
1746 config PAGE_SIZE_32KB
1748 depends on CPU_CAVIUM_OCTEON
1750 Using 32kB page size will result in higher performance kernel at
1751 the price of higher memory consumption. This option is available
1752 only on cnMIPS cores. Note that you will need a suitable Linux
1753 distribution to support this.
1755 config PAGE_SIZE_64KB
1757 depends on !CPU_R3000 && !CPU_TX39XX
1759 Using 64kB page size will result in higher performance kernel at
1760 the price of higher memory consumption. This option is available on
1761 all non-R3000 family processor. Not that at the time of this
1762 writing this option is still high experimental.
1766 config FORCE_MAX_ZONEORDER
1767 int "Maximum zone order"
1768 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1769 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1770 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1771 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1772 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1773 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1777 The kernel memory allocator divides physically contiguous memory
1778 blocks into "zones", where each zone is a power of two number of
1779 pages. This option selects the largest power of two that the kernel
1780 keeps in the memory allocator. If you need to allocate very large
1781 blocks of physically contiguous memory, then you may need to
1782 increase this value.
1784 This config option is actually maximum order plus one. For example,
1785 a value of 11 means that the largest free memory block is 2^10 pages.
1787 The page size is not necessarily 4KB. Keep this in mind
1788 when choosing a value for this option.
1791 bool "Use GIC global counter for clock events"
1792 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1794 Use the GIC global counter for the clock events. The R4K clock
1795 event driver is always present, so if the platform ends up not
1796 detecting a GIC, it will fall back to the R4K timer for the
1797 generation of clock events.
1802 config IP22_CPU_SCACHE
1807 # Support for a MIPS32 / MIPS64 style S-caches
1809 config MIPS_CPU_SCACHE
1813 config R5000_CPU_SCACHE
1817 config RM7000_CPU_SCACHE
1821 config SIBYTE_DMA_PAGEOPS
1822 bool "Use DMA to clear/copy pages"
1825 Instead of using the CPU to zero and copy pages, use a Data Mover
1826 channel. These DMA channels are otherwise unused by the standard
1827 SiByte Linux port. Seems to give a small performance benefit.
1829 config CPU_HAS_PREFETCH
1832 config CPU_GENERIC_DUMP_TLB
1834 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1838 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1840 config CPU_R4K_CACHE_TLB
1842 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1845 prompt "MIPS MT options"
1847 config MIPS_MT_DISABLED
1848 bool "Disable multithreading support."
1850 Use this option if your workload can't take advantage of
1851 MIPS hardware multithreading support. On systems that don't have
1852 the option of an MT-enabled processor this option will be the only
1853 option in this menu.
1856 bool "Use 1 TC on each available VPE for SMP"
1857 depends on SYS_SUPPORTS_MULTITHREADING
1858 select CPU_MIPSR2_IRQ_VI
1859 select CPU_MIPSR2_IRQ_EI
1861 select NR_CPUS_DEFAULT_2
1863 select SYS_SUPPORTS_SCHED_SMT if SMP
1864 select SYS_SUPPORTS_SMP
1866 select MIPS_PERF_SHARED_TC_COUNTERS
1868 This is a kernel model which is known a VSMP but lately has been
1869 marketesed into SMVP.
1870 Virtual SMP uses the processor's VPEs to implement virtual
1871 processors. In currently available configuration of the 34K processor
1872 this allows for a dual processor. Both processors will share the same
1873 primary caches; each will obtain the half of the TLB for it's own
1874 exclusive use. For a layman this model can be described as similar to
1875 what Intel calls Hyperthreading.
1877 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1880 bool "SMTC: Use all TCs on all VPEs for SMP"
1881 depends on CPU_MIPS32_R2
1882 #depends on CPU_MIPS64_R2 # once there is hardware ...
1883 depends on SYS_SUPPORTS_MULTITHREADING
1884 select CPU_MIPSR2_IRQ_VI
1885 select CPU_MIPSR2_IRQ_EI
1887 select NR_CPUS_DEFAULT_8
1889 select SYS_SUPPORTS_SMP
1892 This is a kernel model which is known a SMTC or lately has been
1893 marketesed into SMVP.
1894 is presenting the available TC's of the core as processors to Linux.
1895 On currently available 34K processors this means a Linux system will
1896 see up to 5 processors. The implementation of the SMTC kernel differs
1897 significantly from VSMP and cannot efficiently coexist in the same
1898 kernel binary so the choice between VSMP and SMTC is a compile time
1901 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1909 bool "SMT (multithreading) scheduler support"
1910 depends on SYS_SUPPORTS_SCHED_SMT
1913 SMT scheduler support improves the CPU scheduler's decision making
1914 when dealing with MIPS MT enabled cores at a cost of slightly
1915 increased overhead in some places. If unsure say N here.
1917 config SYS_SUPPORTS_SCHED_SMT
1920 config SYS_SUPPORTS_MULTITHREADING
1923 config MIPS_MT_FPAFF
1924 bool "Dynamic FPU affinity for FP-intensive threads"
1926 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1928 config MIPS_VPE_LOADER
1929 bool "VPE loader support."
1930 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1931 select CPU_MIPSR2_IRQ_VI
1932 select CPU_MIPSR2_IRQ_EI
1935 Includes a loader for loading an elf relocatable object
1936 onto another VPE and running it.
1938 config MIPS_MT_SMTC_IM_BACKSTOP
1939 bool "Use per-TC register bits as backstop for inhibited IM bits"
1940 depends on MIPS_MT_SMTC
1943 To support multiple TC microthreads acting as "CPUs" within
1944 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1945 during interrupt handling. To support legacy drivers and interrupt
1946 controller management code, SMTC has a "backstop" to track and
1947 if necessary restore the interrupt mask. This has some performance
1948 impact on interrupt service overhead.
1950 config MIPS_MT_SMTC_IRQAFF
1951 bool "Support IRQ affinity API"
1952 depends on MIPS_MT_SMTC
1955 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1956 for SMTC Linux kernel. Requires platform support, of which
1957 an example can be found in the MIPS kernel i8259 and Malta
1958 platform code. Adds some overhead to interrupt dispatch, and
1959 should be used only if you know what you are doing.
1961 config MIPS_VPE_LOADER_TOM
1962 bool "Load VPE program into memory hidden from linux"
1963 depends on MIPS_VPE_LOADER
1966 The loader can use memory that is present but has been hidden from
1967 Linux using the kernel command line option "mem=xxMB". It's up to
1968 you to ensure the amount you put in the option and the space your
1969 program requires is less or equal to the amount physically present.
1971 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1972 config MIPS_VPE_APSP_API
1973 bool "Enable support for AP/SP API (RTLX)"
1974 depends on MIPS_VPE_LOADER
1978 bool "MIPS CMP framework support"
1979 depends on SYS_SUPPORTS_MIPS_CMP
1981 select SYS_SUPPORTS_SMP
1982 select SYS_SUPPORTS_SCHED_SMT if SMP
1983 select WEAK_ORDERING
1986 This is a placeholder option for the GCMP work. It will need to
1987 be handled differently...
1989 config SB1_PASS_1_WORKAROUNDS
1991 depends on CPU_SB1_PASS_1
1994 config SB1_PASS_2_WORKAROUNDS
1996 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1999 config SB1_PASS_2_1_WORKAROUNDS
2001 depends on CPU_SB1 && CPU_SB1_PASS_2
2005 config 64BIT_PHYS_ADDR
2008 config ARCH_PHYS_ADDR_T_64BIT
2009 def_bool 64BIT_PHYS_ADDR
2011 config CPU_HAS_SMARTMIPS
2012 depends on SYS_SUPPORTS_SMARTMIPS
2013 bool "Support for the SmartMIPS ASE"
2015 SmartMIPS is a extension of the MIPS32 architecture aimed at
2016 increased security at both hardware and software level for
2017 smartcards. Enabling this option will allow proper use of the
2018 SmartMIPS instructions by Linux applications. However a kernel with
2019 this option will not work on a MIPS core without SmartMIPS core. If
2020 you don't know you probably don't have SmartMIPS and should say N
2023 config CPU_MICROMIPS
2024 depends on SYS_SUPPORTS_MICROMIPS
2025 bool "Build kernel using microMIPS ISA"
2027 When this option is enabled the kernel will be built using the
2037 # Vectored interrupt mode is an R2 feature
2039 config CPU_MIPSR2_IRQ_VI
2043 # Extended interrupt mode is an R2 feature
2045 config CPU_MIPSR2_IRQ_EI
2050 depends on !CPU_R3000
2056 config CPU_DADDI_WORKAROUNDS
2059 config CPU_R4000_WORKAROUNDS
2061 select CPU_R4400_WORKAROUNDS
2063 config CPU_R4400_WORKAROUNDS
2067 # - Highmem only makes sense for the 32-bit kernel.
2068 # - The current highmem code will only work properly on physically indexed
2069 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2070 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2071 # moment we protect the user and offer the highmem option only on machines
2072 # where it's known to be safe. This will not offer highmem on a few systems
2073 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2074 # indexed CPUs but we're playing safe.
2075 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2076 # know they might have memory configurations that could make use of highmem
2080 bool "High Memory Support"
2081 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2083 config CPU_SUPPORTS_HIGHMEM
2086 config SYS_SUPPORTS_HIGHMEM
2089 config SYS_SUPPORTS_SMARTMIPS
2092 config SYS_SUPPORTS_MICROMIPS
2095 config ARCH_FLATMEM_ENABLE
2097 depends on !NUMA && !CPU_LOONGSON2
2099 config ARCH_DISCONTIGMEM_ENABLE
2101 default y if SGI_IP27
2103 Say Y to support efficient handling of discontiguous physical memory,
2104 for architectures which are either NUMA (Non-Uniform Memory Access)
2105 or have huge holes in the physical address space for other reasons.
2106 See <file:Documentation/vm/numa> for more.
2108 config ARCH_SPARSEMEM_ENABLE
2110 select SPARSEMEM_STATIC
2114 depends on SYS_SUPPORTS_NUMA
2116 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2117 Access). This option improves performance on systems with more
2118 than two nodes; on two node systems it is generally better to
2119 leave it disabled; on single node systems disable this option
2122 config SYS_SUPPORTS_NUMA
2128 depends on NEED_MULTIPLE_NODES
2130 config HW_PERF_EVENTS
2131 bool "Enable hardware performance counter support for perf events"
2132 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2135 Enable hardware performance counter support for perf events. If
2136 disabled, perf events will use software events only.
2141 bool "Multi-Processing support"
2142 depends on SYS_SUPPORTS_SMP
2143 select USE_GENERIC_SMP_HELPERS
2145 This enables support for systems with more than one CPU. If you have
2146 a system with only one CPU, like most personal computers, say N. If
2147 you have a system with more than one CPU, say Y.
2149 If you say N here, the kernel will run on single and multiprocessor
2150 machines, but will use only one CPU of a multiprocessor machine. If
2151 you say Y here, the kernel will run on many, but not all,
2152 singleprocessor machines. On a singleprocessor machine, the kernel
2153 will run faster if you say N here.
2155 People using multiprocessor machines who say Y here should also say
2156 Y to "Enhanced Real Time Clock Support", below.
2158 See also the SMP-HOWTO available at
2159 <http://www.tldp.org/docs.html#howto>.
2161 If you don't know what to do here, say N.
2166 config SYS_SUPPORTS_MIPS_CMP
2169 config SYS_SUPPORTS_SMP
2172 config NR_CPUS_DEFAULT_1
2175 config NR_CPUS_DEFAULT_2
2178 config NR_CPUS_DEFAULT_4
2181 config NR_CPUS_DEFAULT_8
2184 config NR_CPUS_DEFAULT_16
2187 config NR_CPUS_DEFAULT_32
2190 config NR_CPUS_DEFAULT_64
2194 int "Maximum number of CPUs (2-64)"
2195 range 1 64 if NR_CPUS_DEFAULT_1
2197 default "1" if NR_CPUS_DEFAULT_1
2198 default "2" if NR_CPUS_DEFAULT_2
2199 default "4" if NR_CPUS_DEFAULT_4
2200 default "8" if NR_CPUS_DEFAULT_8
2201 default "16" if NR_CPUS_DEFAULT_16
2202 default "32" if NR_CPUS_DEFAULT_32
2203 default "64" if NR_CPUS_DEFAULT_64
2205 This allows you to specify the maximum number of CPUs which this
2206 kernel will support. The maximum supported value is 32 for 32-bit
2207 kernel and 64 for 64-bit kernels; the minimum value which makes
2208 sense is 1 for Qemu (useful only for kernel debugging purposes)
2209 and 2 for all others.
2211 This is purely to save memory - each supported CPU adds
2212 approximately eight kilobytes to the kernel image. For best
2213 performance should round up your number of processors to the next
2216 config MIPS_PERF_SHARED_TC_COUNTERS
2220 # Timer Interrupt Frequency Configuration
2224 prompt "Timer frequency"
2227 Allows the configuration of the timer frequency.
2230 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2233 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2236 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2239 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2242 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2245 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2248 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2252 config SYS_SUPPORTS_48HZ
2255 config SYS_SUPPORTS_100HZ
2258 config SYS_SUPPORTS_128HZ
2261 config SYS_SUPPORTS_250HZ
2264 config SYS_SUPPORTS_256HZ
2267 config SYS_SUPPORTS_1000HZ
2270 config SYS_SUPPORTS_1024HZ
2273 config SYS_SUPPORTS_ARBIT_HZ
2275 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2276 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2277 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2278 !SYS_SUPPORTS_1024HZ
2283 default 100 if HZ_100
2284 default 128 if HZ_128
2285 default 250 if HZ_250
2286 default 256 if HZ_256
2287 default 1000 if HZ_1000
2288 default 1024 if HZ_1024
2290 source "kernel/Kconfig.preempt"
2293 bool "Kexec system call"
2295 kexec is a system call that implements the ability to shutdown your
2296 current kernel, and to start another kernel. It is like a reboot
2297 but it is independent of the system firmware. And like a reboot
2298 you can start any kernel with it, not just Linux.
2300 The name comes from the similarity to the exec system call.
2302 It is an ongoing process to be certain the hardware in a machine
2303 is properly shutdown, so do not be surprised if this code does not
2304 initially work for you. It may help to enable device hotplugging
2305 support. As of this writing the exact hardware interface is
2306 strongly in flux, so no good recommendation can be made.
2309 bool "Kernel crash dumps"
2311 Generate crash dump after being started by kexec.
2312 This should be normally only set in special crash dump kernels
2313 which are loaded in the main kernel with kexec-tools into
2314 a specially reserved region and then later executed after
2315 a crash by kdump/kexec. The crash dump kernel must be compiled
2316 to a memory address not used by the main kernel or firmware using
2319 config PHYSICAL_START
2320 hex "Physical address where the kernel is loaded"
2321 default "0xffffffff84000000" if 64BIT
2322 default "0x84000000" if 32BIT
2323 depends on CRASH_DUMP
2325 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2326 If you plan to use kernel for capturing the crash dump change
2327 this value to start of the reserved region (the "X" value as
2328 specified in the "crashkernel=YM@XM" command line boot parameter
2329 passed to the panic-ed kernel).
2332 bool "Enable seccomp to safely compute untrusted bytecode"
2336 This kernel feature is useful for number crunching applications
2337 that may need to compute untrusted bytecode during their
2338 execution. By using pipes or other transports made available to
2339 the process as file descriptors supporting the read/write
2340 syscalls, it's possible to isolate those applications in
2341 their own address space using seccomp. Once seccomp is
2342 enabled via /proc/<pid>/seccomp, it cannot be disabled
2343 and the task is only allowed to execute a few safe syscalls
2344 defined by each seccomp mode.
2346 If unsure, say Y. Only embedded should say N here.
2348 config CC_STACKPROTECTOR
2349 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2351 This option turns on the -fstack-protector GCC feature. This
2352 feature puts, at the beginning of functions, a canary value on
2353 the stack just before the return address, and validates
2354 the value just before actually returning. Stack based buffer
2355 overflows (that need to overwrite this return address) now also
2356 overwrite the canary, which gets detected and the attack is then
2357 neutralized via a kernel panic.
2359 This feature requires gcc version 4.2 or above.
2364 select OF_EARLY_FLATTREE
2369 config LOCKDEP_SUPPORT
2373 config STACKTRACE_SUPPORT
2377 source "init/Kconfig"
2379 source "kernel/Kconfig.freezer"
2381 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2389 bool "Support for PCI controller"
2390 depends on HW_HAS_PCI
2392 select NO_GENERIC_PCI_IOPORT_MAP
2394 Find out whether you have a PCI motherboard. PCI is the name of a
2395 bus system, i.e. the way the CPU talks to the other stuff inside
2396 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2402 source "drivers/pci/Kconfig"
2404 source "drivers/pci/pcie/Kconfig"
2407 # ISA support is now enabled via select. Too many systems still have the one
2408 # or other ISA chip on the board that users don't know about so don't expect
2409 # users to choose the right thing ...
2416 depends on HW_HAS_EISA
2418 select GENERIC_ISA_DMA
2420 The Extended Industry Standard Architecture (EISA) bus was
2421 developed as an open alternative to the IBM MicroChannel bus.
2423 The EISA bus provided some of the features of the IBM MicroChannel
2424 bus while maintaining backward compatibility with cards made for
2425 the older ISA bus. The EISA bus saw limited use between 1988 and
2426 1995 when it was made obsolete by the PCI bus.
2428 Say Y here if you are building a kernel for an EISA-based machine.
2432 source "drivers/eisa/Kconfig"
2435 bool "TURBOchannel support"
2436 depends on MACH_DECSTATION
2438 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2439 processors. TURBOchannel programming specifications are available
2441 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2443 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2444 Linux driver support status is documented at:
2445 <http://www.linux-mips.org/wiki/DECstation>
2455 select MIPS_EXTERNAL_TIMER
2463 source "drivers/pcmcia/Kconfig"
2465 source "drivers/pci/hotplug/Kconfig"
2468 bool "RapidIO support"
2472 If you say Y here, the kernel will include drivers and
2473 infrastructure code to support RapidIO interconnect devices.
2475 source "drivers/rapidio/Kconfig"
2479 menu "Executable file formats"
2481 source "fs/Kconfig.binfmt"
2486 config MIPS32_COMPAT
2487 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2490 Select this option if you want Linux/MIPS 32-bit binary
2491 compatibility. Since all software available for Linux/MIPS is
2492 currently 32-bit you should say Y here.
2496 depends on MIPS32_COMPAT
2497 select ARCH_WANT_OLD_COMPAT_IPC
2500 config SYSVIPC_COMPAT
2502 depends on COMPAT && SYSVIPC
2506 bool "Kernel support for o32 binaries"
2507 depends on MIPS32_COMPAT
2509 Select this option if you want to run o32 binaries. These are pure
2510 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2511 existing binaries are in this format.
2516 bool "Kernel support for n32 binaries"
2517 depends on MIPS32_COMPAT
2519 Select this option if you want to run n32 binaries. These are
2520 64-bit binaries using 32-bit quantities for addressing and certain
2521 data that would normally be 64-bit. They are used in special
2528 default y if MIPS32_O32 || MIPS32_N32
2532 menu "Power management options"
2534 config ARCH_HIBERNATION_POSSIBLE
2536 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2538 config ARCH_SUSPEND_POSSIBLE
2540 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2542 source "kernel/power/Kconfig"
2546 config MIPS_EXTERNAL_TIMER
2549 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2550 menu "CPU Power Management"
2551 source "drivers/cpufreq/Kconfig"
2555 source "net/Kconfig"
2557 source "drivers/Kconfig"
2559 source "drivers/firmware/Kconfig"
2563 source "arch/mips/Kconfig.debug"
2565 source "security/Kconfig"
2567 source "crypto/Kconfig"
2569 source "lib/Kconfig"
2571 source "arch/mips/kvm/Kconfig"