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 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
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
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_HIGHMEM
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select ZONE_DMA32 if 64BIT
619 config SIBYTE_LITTLESUR
620 bool "Sibyte BCM91250C2-LittleSur"
623 select HAVE_PATA_PLATFORM
626 select SYS_HAS_CPU_SB1
627 select SYS_SUPPORTS_BIG_ENDIAN
628 select SYS_SUPPORTS_HIGHMEM
629 select SYS_SUPPORTS_LITTLE_ENDIAN
631 config SIBYTE_SENTOSA
632 bool "Sibyte BCM91250E-Sentosa"
637 select SYS_HAS_CPU_SB1
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_LITTLE_ENDIAN
642 bool "Sibyte BCM91480B-BigSur"
645 select NR_CPUS_DEFAULT_4
646 select SIBYTE_BCM1x80
648 select SYS_HAS_CPU_SB1
649 select SYS_SUPPORTS_BIG_ENDIAN
650 select SYS_SUPPORTS_HIGHMEM
651 select SYS_SUPPORTS_LITTLE_ENDIAN
652 select ZONE_DMA32 if 64BIT
655 bool "SNI RM200/300/400"
656 select FW_ARC if CPU_LITTLE_ENDIAN
657 select FW_ARC32 if CPU_LITTLE_ENDIAN
658 select FW_SNIPROM if CPU_BIG_ENDIAN
659 select ARCH_MAY_HAVE_PC_FDC
663 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
664 select DMA_NONCOHERENT
665 select GENERIC_ISA_DMA
666 select HAVE_PCSPKR_PLATFORM
673 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
674 select SYS_HAS_CPU_R4X00
675 select SYS_HAS_CPU_R5000
676 select SYS_HAS_CPU_R10000
677 select R5000_CPU_SCACHE
678 select SYS_HAS_EARLY_PRINTK
679 select SYS_SUPPORTS_32BIT_KERNEL
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_HIGHMEM
683 select SYS_SUPPORTS_LITTLE_ENDIAN
685 The SNI RM200/300/400 are MIPS-based machines manufactured by
686 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
687 Technology and now in turn merged with Fujitsu. Say Y here to
688 support this machine type.
691 bool "Toshiba TX39 series based machines"
694 bool "Toshiba TX49 series based machines"
696 config MIKROTIK_RB532
697 bool "Mikrotik RB532 boards"
700 select DMA_NONCOHERENT
703 select SYS_HAS_CPU_MIPS32_R1
704 select SYS_SUPPORTS_32BIT_KERNEL
705 select SYS_SUPPORTS_LITTLE_ENDIAN
708 select ARCH_REQUIRE_GPIOLIB
710 Support the Mikrotik(tm) RouterBoard 532 series,
711 based on the IDT RC32434 SoC.
713 config CAVIUM_OCTEON_SOC
714 bool "Cavium Networks Octeon SoC based boards"
716 select 64BIT_PHYS_ADDR
718 select SYS_SUPPORTS_64BIT_KERNEL
719 select SYS_SUPPORTS_BIG_ENDIAN
721 select SYS_SUPPORTS_HOTPLUG_CPU
722 select SYS_HAS_EARLY_PRINTK
723 select SYS_HAS_CPU_CAVIUM_OCTEON
726 select ARCH_SUPPORTS_MSI
728 select USB_ARCH_HAS_OHCI
729 select USB_ARCH_HAS_EHCI
732 This option supports all of the Octeon reference boards from Cavium
733 Networks. It builds a kernel that dynamically determines the Octeon
734 CPU type and supports all known board reference implementations.
735 Some of the supported boards are:
742 Say Y here for most Octeon reference boards.
745 bool "Netlogic XLR/XLS based systems"
748 select SYS_HAS_CPU_XLR
749 select SYS_SUPPORTS_SMP
752 select SYS_SUPPORTS_32BIT_KERNEL
753 select SYS_SUPPORTS_64BIT_KERNEL
754 select 64BIT_PHYS_ADDR
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_HIGHMEM
758 select NR_CPUS_DEFAULT_32
762 select ARCH_SUPPORTS_MSI
763 select ZONE_DMA32 if 64BIT
765 select SYS_HAS_EARLY_PRINTK
766 select USB_ARCH_HAS_OHCI if USB_SUPPORT
767 select USB_ARCH_HAS_EHCI if USB_SUPPORT
768 select SYS_SUPPORTS_ZBOOT
769 select SYS_SUPPORTS_ZBOOT_UART16550
771 Support for systems based on Netlogic XLR and XLS processors.
772 Say Y here if you have a XLR or XLS based board.
775 bool "Netlogic XLP based systems"
778 select SYS_HAS_CPU_XLP
779 select SYS_SUPPORTS_SMP
781 select SYS_SUPPORTS_32BIT_KERNEL
782 select SYS_SUPPORTS_64BIT_KERNEL
783 select 64BIT_PHYS_ADDR
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_LITTLE_ENDIAN
786 select SYS_SUPPORTS_HIGHMEM
788 select NR_CPUS_DEFAULT_32
792 select ZONE_DMA32 if 64BIT
794 select SYS_HAS_EARLY_PRINTK
796 select SYS_SUPPORTS_ZBOOT
797 select SYS_SUPPORTS_ZBOOT_UART16550
799 This board is based on Netlogic XLP Processor.
800 Say Y here if you have a XLP based board.
804 source "arch/mips/alchemy/Kconfig"
805 source "arch/mips/ath79/Kconfig"
806 source "arch/mips/bcm47xx/Kconfig"
807 source "arch/mips/bcm63xx/Kconfig"
808 source "arch/mips/jazz/Kconfig"
809 source "arch/mips/jz4740/Kconfig"
810 source "arch/mips/lantiq/Kconfig"
811 source "arch/mips/lasat/Kconfig"
812 source "arch/mips/pmcs-msp71xx/Kconfig"
813 source "arch/mips/powertv/Kconfig"
814 source "arch/mips/ralink/Kconfig"
815 source "arch/mips/sgi-ip27/Kconfig"
816 source "arch/mips/sibyte/Kconfig"
817 source "arch/mips/txx9/Kconfig"
818 source "arch/mips/vr41xx/Kconfig"
819 source "arch/mips/cavium-octeon/Kconfig"
820 source "arch/mips/loongson/Kconfig"
821 source "arch/mips/loongson1/Kconfig"
822 source "arch/mips/netlogic/Kconfig"
826 config RWSEM_GENERIC_SPINLOCK
830 config RWSEM_XCHGADD_ALGORITHM
833 config ARCH_HAS_ILOG2_U32
837 config ARCH_HAS_ILOG2_U64
841 config GENERIC_HWEIGHT
845 config GENERIC_CALIBRATE_DELAY
849 config SCHED_OMIT_FRAME_POINTER
854 # Select some configuration options automatically based on user selections.
859 config ARCH_MAY_HAVE_PC_FDC
905 select ARCH_REQUIRE_GPIOLIB
911 config ARCH_DMA_ADDR_T_64BIT
912 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
917 config DMA_NONCOHERENT
919 select NEED_DMA_MAP_STATE
921 config NEED_DMA_MAP_STATE
924 config SYS_HAS_EARLY_PRINTK
928 bool "Support for hot-pluggable CPUs"
929 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
931 Say Y here to allow turning CPUs off and on. CPUs can be
932 controlled through /sys/devices/system/cpu.
933 (Note: power management support will enable this option
934 automatically on SMP systems. )
935 Say N if you want to disable CPU hotplug.
937 config SYS_SUPPORTS_HOTPLUG_CPU
961 config GENERIC_ISA_DMA
963 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
966 config GENERIC_ISA_DMA_SUPPORT_BROKEN
968 select GENERIC_ISA_DMA
977 # Endianness selection. Sufficiently obscure so many users don't know what to
978 # answer,so we try hard to limit the available choices. Also the use of a
979 # choice statement should be more obvious to the user.
982 prompt "Endianness selection"
984 Some MIPS machines can be configured for either little or big endian
985 byte order. These modes require different kernels and a different
986 Linux distribution. In general there is one preferred byteorder for a
987 particular system but some systems are just as commonly used in the
988 one or the other endianness.
990 config CPU_BIG_ENDIAN
992 depends on SYS_SUPPORTS_BIG_ENDIAN
994 config CPU_LITTLE_ENDIAN
996 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1003 config SYS_SUPPORTS_APM_EMULATION
1006 config SYS_SUPPORTS_BIG_ENDIAN
1009 config SYS_SUPPORTS_LITTLE_ENDIAN
1012 config SYS_SUPPORTS_HUGETLBFS
1014 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1017 config MIPS_HUGE_TLB_SUPPORT
1018 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1041 config PCI_GT64XXX_PCI0
1044 config NO_EXCEPT_FILL
1051 select DMA_NONCOHERENT
1053 select SWAP_IO_SPACE
1054 select SYS_HAS_CPU_R5500
1055 select SYS_SUPPORTS_32BIT_KERNEL
1056 select SYS_SUPPORTS_64BIT_KERNEL
1057 select SYS_SUPPORTS_BIG_ENDIAN
1064 select DMA_NONCOHERENT
1065 select SYS_HAS_CPU_MIPS32_R2
1066 select SYS_SUPPORTS_32BIT_KERNEL
1067 select SYS_SUPPORTS_LITTLE_ENDIAN
1068 select SYS_SUPPORTS_BIG_ENDIAN
1069 select CPU_MIPSR2_IRQ_VI
1075 config SWAP_IO_SPACE
1078 config SGI_HAS_INDYDOG
1090 config SGI_HAS_ZILOG
1093 config SGI_HAS_I8042
1096 config DEFAULT_SGI_PARTITION
1108 config MIPS_L1_CACHE_SHIFT
1110 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1111 default "6" if MIPS_CPU_SCACHE
1112 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1115 config HAVE_STD_PC_SERIAL_PORT
1119 bool "ARC console support"
1120 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1124 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1129 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1138 menu "CPU selection"
1144 config CPU_LOONGSON2E
1146 depends on SYS_HAS_CPU_LOONGSON2E
1147 select CPU_LOONGSON2
1149 The Loongson 2E processor implements the MIPS III instruction set
1150 with many extensions.
1152 It has an internal FPGA northbridge, which is compatible to
1155 config CPU_LOONGSON2F
1157 depends on SYS_HAS_CPU_LOONGSON2F
1158 select CPU_LOONGSON2
1159 select ARCH_REQUIRE_GPIOLIB
1161 The Loongson 2F processor implements the MIPS III instruction set
1162 with many extensions.
1164 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1165 have a similar programming interface with FPGA northbridge used in
1168 config CPU_LOONGSON1B
1170 depends on SYS_HAS_CPU_LOONGSON1B
1171 select CPU_LOONGSON1
1173 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1174 release 2 instruction set.
1176 config CPU_MIPS32_R1
1177 bool "MIPS32 Release 1"
1178 depends on SYS_HAS_CPU_MIPS32_R1
1179 select CPU_HAS_PREFETCH
1180 select CPU_SUPPORTS_32BIT_KERNEL
1181 select CPU_SUPPORTS_HIGHMEM
1183 Choose this option to build a kernel for release 1 or later of the
1184 MIPS32 architecture. Most modern embedded systems with a 32-bit
1185 MIPS processor are based on a MIPS32 processor. If you know the
1186 specific type of processor in your system, choose those that one
1187 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1188 Release 2 of the MIPS32 architecture is available since several
1189 years so chances are you even have a MIPS32 Release 2 processor
1190 in which case you should choose CPU_MIPS32_R2 instead for better
1193 config CPU_MIPS32_R2
1194 bool "MIPS32 Release 2"
1195 depends on SYS_HAS_CPU_MIPS32_R2
1196 select CPU_HAS_PREFETCH
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1201 Choose this option to build a kernel for release 2 or later of the
1202 MIPS32 architecture. Most modern embedded systems with a 32-bit
1203 MIPS processor are based on a MIPS32 processor. If you know the
1204 specific type of processor in your system, choose those that one
1205 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1207 config CPU_MIPS64_R1
1208 bool "MIPS64 Release 1"
1209 depends on SYS_HAS_CPU_MIPS64_R1
1210 select CPU_HAS_PREFETCH
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_64BIT_KERNEL
1213 select CPU_SUPPORTS_HIGHMEM
1214 select CPU_SUPPORTS_HUGEPAGES
1216 Choose this option to build a kernel for release 1 or later of the
1217 MIPS64 architecture. Many modern embedded systems with a 64-bit
1218 MIPS processor are based on a MIPS64 processor. If you know the
1219 specific type of processor in your system, choose those that one
1220 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1221 Release 2 of the MIPS64 architecture is available since several
1222 years so chances are you even have a MIPS64 Release 2 processor
1223 in which case you should choose CPU_MIPS64_R2 instead for better
1226 config CPU_MIPS64_R2
1227 bool "MIPS64 Release 2"
1228 depends on SYS_HAS_CPU_MIPS64_R2
1229 select CPU_HAS_PREFETCH
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1232 select CPU_SUPPORTS_HIGHMEM
1233 select CPU_SUPPORTS_HUGEPAGES
1235 Choose this option to build a kernel for release 2 or later of the
1236 MIPS64 architecture. Many modern embedded systems with a 64-bit
1237 MIPS processor are based on a MIPS64 processor. If you know the
1238 specific type of processor in your system, choose those that one
1239 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1243 depends on SYS_HAS_CPU_R3000
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_HIGHMEM
1248 Please make sure to pick the right CPU type. Linux/MIPS is not
1249 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1250 *not* work on R4000 machines and vice versa. However, since most
1251 of the supported machines have an R4000 (or similar) CPU, R4x00
1252 might be a safe bet. If the resulting kernel does not work,
1253 try to recompile with R3000.
1257 depends on SYS_HAS_CPU_TX39XX
1258 select CPU_SUPPORTS_32BIT_KERNEL
1262 depends on SYS_HAS_CPU_VR41XX
1263 select CPU_SUPPORTS_32BIT_KERNEL
1264 select CPU_SUPPORTS_64BIT_KERNEL
1266 The options selects support for the NEC VR4100 series of processors.
1267 Only choose this option if you have one of these processors as a
1268 kernel built with this option will not run on any other type of
1269 processor or vice versa.
1273 depends on SYS_HAS_CPU_R4300
1274 select CPU_SUPPORTS_32BIT_KERNEL
1275 select CPU_SUPPORTS_64BIT_KERNEL
1277 MIPS Technologies R4300-series processors.
1281 depends on SYS_HAS_CPU_R4X00
1282 select CPU_SUPPORTS_32BIT_KERNEL
1283 select CPU_SUPPORTS_64BIT_KERNEL
1284 select CPU_SUPPORTS_HUGEPAGES
1286 MIPS Technologies R4000-series processors other than 4300, including
1287 the R4000, R4400, R4600, and 4700.
1291 depends on SYS_HAS_CPU_TX49XX
1292 select CPU_HAS_PREFETCH
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select CPU_SUPPORTS_HUGEPAGES
1299 depends on SYS_HAS_CPU_R5000
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1302 select CPU_SUPPORTS_HUGEPAGES
1304 MIPS Technologies R5000-series processors other than the Nevada.
1308 depends on SYS_HAS_CPU_R5432
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1311 select CPU_SUPPORTS_HUGEPAGES
1315 depends on SYS_HAS_CPU_R5500
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1318 select CPU_SUPPORTS_HUGEPAGES
1320 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1325 depends on SYS_HAS_CPU_R6000
1326 select CPU_SUPPORTS_32BIT_KERNEL
1328 MIPS Technologies R6000 and R6000A series processors. Note these
1329 processors are extremely rare and the support for them is incomplete.
1333 depends on SYS_HAS_CPU_NEVADA
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1336 select CPU_SUPPORTS_HUGEPAGES
1338 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1342 depends on SYS_HAS_CPU_R8000
1343 select CPU_HAS_PREFETCH
1344 select CPU_SUPPORTS_64BIT_KERNEL
1346 MIPS Technologies R8000 processors. Note these processors are
1347 uncommon and the support for them is incomplete.
1351 depends on SYS_HAS_CPU_R10000
1352 select CPU_HAS_PREFETCH
1353 select CPU_SUPPORTS_32BIT_KERNEL
1354 select CPU_SUPPORTS_64BIT_KERNEL
1355 select CPU_SUPPORTS_HIGHMEM
1356 select CPU_SUPPORTS_HUGEPAGES
1358 MIPS Technologies R10000-series processors.
1362 depends on SYS_HAS_CPU_RM7000
1363 select CPU_HAS_PREFETCH
1364 select CPU_SUPPORTS_32BIT_KERNEL
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_HUGEPAGES
1371 depends on SYS_HAS_CPU_SB1
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_HUGEPAGES
1376 select WEAK_ORDERING
1378 config CPU_CAVIUM_OCTEON
1379 bool "Cavium Octeon processor"
1380 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1381 select ARCH_SPARSEMEM_ENABLE
1382 select CPU_HAS_PREFETCH
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select SYS_SUPPORTS_SMP
1385 select NR_CPUS_DEFAULT_16
1386 select WEAK_ORDERING
1387 select CPU_SUPPORTS_HIGHMEM
1388 select CPU_SUPPORTS_HUGEPAGES
1391 select USB_EHCI_BIG_ENDIAN_MMIO
1393 The Cavium Octeon processor is a highly integrated chip containing
1394 many ethernet hardware widgets for networking tasks. The processor
1395 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1396 Full details can be found at http://www.caviumnetworks.com.
1398 config CPU_BMIPS3300
1400 depends on SYS_HAS_CPU_BMIPS3300
1403 Broadcom BMIPS3300 processors.
1405 config CPU_BMIPS4350
1407 depends on SYS_HAS_CPU_BMIPS4350
1409 select SYS_SUPPORTS_SMP
1410 select SYS_SUPPORTS_HOTPLUG_CPU
1412 Broadcom BMIPS4350 ("VIPER") processors.
1414 config CPU_BMIPS4380
1416 depends on SYS_HAS_CPU_BMIPS4380
1418 select SYS_SUPPORTS_SMP
1419 select SYS_SUPPORTS_HOTPLUG_CPU
1421 Broadcom BMIPS4380 processors.
1423 config CPU_BMIPS5000
1425 depends on SYS_HAS_CPU_BMIPS5000
1427 select CPU_SUPPORTS_HIGHMEM
1428 select MIPS_CPU_SCACHE
1429 select SYS_SUPPORTS_SMP
1430 select SYS_SUPPORTS_HOTPLUG_CPU
1432 Broadcom BMIPS5000 processors.
1435 bool "Netlogic XLR SoC"
1436 depends on SYS_HAS_CPU_XLR
1437 select CPU_SUPPORTS_32BIT_KERNEL
1438 select CPU_SUPPORTS_64BIT_KERNEL
1439 select CPU_SUPPORTS_HIGHMEM
1440 select CPU_SUPPORTS_HUGEPAGES
1441 select WEAK_ORDERING
1442 select WEAK_REORDERING_BEYOND_LLSC
1444 Netlogic Microsystems XLR/XLS processors.
1447 bool "Netlogic XLP SoC"
1448 depends on SYS_HAS_CPU_XLP
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_64BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1452 select WEAK_ORDERING
1453 select WEAK_REORDERING_BEYOND_LLSC
1454 select CPU_HAS_PREFETCH
1457 Netlogic Microsystems XLP processors.
1461 config CPU_NOP_WORKAROUNDS
1464 config CPU_JUMP_WORKAROUNDS
1467 config CPU_LOONGSON2F_WORKAROUNDS
1468 bool "Loongson 2F Workarounds"
1470 select CPU_NOP_WORKAROUNDS
1471 select CPU_JUMP_WORKAROUNDS
1473 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1474 require workarounds. Without workarounds the system may hang
1475 unexpectedly. For more information please refer to the gas
1476 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1478 Loongson 2F03 and later have fixed these issues and no workarounds
1479 are needed. The workarounds have no significant side effect on them
1480 but may decrease the performance of the system so this option should
1481 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1484 If unsure, please say Y.
1485 endif # CPU_LOONGSON2F
1487 config SYS_SUPPORTS_ZBOOT
1489 select HAVE_KERNEL_GZIP
1490 select HAVE_KERNEL_BZIP2
1491 select HAVE_KERNEL_LZMA
1492 select HAVE_KERNEL_LZO
1494 config SYS_SUPPORTS_ZBOOT_UART16550
1496 select SYS_SUPPORTS_ZBOOT
1498 config CPU_LOONGSON2
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_HUGEPAGES
1505 config CPU_LOONGSON1
1509 select CPU_HAS_PREFETCH
1510 select CPU_SUPPORTS_32BIT_KERNEL
1511 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select DMA_NONCOHERENT
1519 select SWAP_IO_SPACE
1520 select WEAK_ORDERING
1522 config SYS_HAS_CPU_LOONGSON2E
1525 config SYS_HAS_CPU_LOONGSON2F
1527 select CPU_SUPPORTS_CPUFREQ
1528 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1529 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1531 config SYS_HAS_CPU_LOONGSON1B
1534 config SYS_HAS_CPU_MIPS32_R1
1537 config SYS_HAS_CPU_MIPS32_R2
1540 config SYS_HAS_CPU_MIPS64_R1
1543 config SYS_HAS_CPU_MIPS64_R2
1546 config SYS_HAS_CPU_R3000
1549 config SYS_HAS_CPU_TX39XX
1552 config SYS_HAS_CPU_VR41XX
1555 config SYS_HAS_CPU_R4300
1558 config SYS_HAS_CPU_R4X00
1561 config SYS_HAS_CPU_TX49XX
1564 config SYS_HAS_CPU_R5000
1567 config SYS_HAS_CPU_R5432
1570 config SYS_HAS_CPU_R5500
1573 config SYS_HAS_CPU_R6000
1576 config SYS_HAS_CPU_NEVADA
1579 config SYS_HAS_CPU_R8000
1582 config SYS_HAS_CPU_R10000
1585 config SYS_HAS_CPU_RM7000
1588 config SYS_HAS_CPU_SB1
1591 config SYS_HAS_CPU_CAVIUM_OCTEON
1594 config SYS_HAS_CPU_BMIPS3300
1597 config SYS_HAS_CPU_BMIPS4350
1600 config SYS_HAS_CPU_BMIPS4380
1603 config SYS_HAS_CPU_BMIPS5000
1606 config SYS_HAS_CPU_XLR
1609 config SYS_HAS_CPU_XLP
1613 # CPU may reorder R->R, R->W, W->R, W->W
1614 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1616 config WEAK_ORDERING
1620 # CPU may reorder reads and writes beyond LL/SC
1621 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1623 config WEAK_REORDERING_BEYOND_LLSC
1628 # These two indicate any level of the MIPS32 and MIPS64 architecture
1632 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1636 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1639 # These two indicate the revision of the architecture, either Release 1 or Release 2
1643 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1647 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1649 config SYS_SUPPORTS_32BIT_KERNEL
1651 config SYS_SUPPORTS_64BIT_KERNEL
1653 config CPU_SUPPORTS_32BIT_KERNEL
1655 config CPU_SUPPORTS_64BIT_KERNEL
1657 config CPU_SUPPORTS_CPUFREQ
1659 config CPU_SUPPORTS_ADDRWINCFG
1661 config CPU_SUPPORTS_HUGEPAGES
1663 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1665 config MIPS_PGD_C0_CONTEXT
1667 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1670 # Set to y for ptrace access to watch registers.
1672 config HARDWARE_WATCHPOINTS
1674 default y if CPU_MIPSR1 || CPU_MIPSR2
1679 prompt "Kernel code model"
1681 You should only select this option if you have a workload that
1682 actually benefits from 64-bit processing or if your machine has
1683 large memory. You will only be presented a single option in this
1684 menu if your system does not support both 32-bit and 64-bit kernels.
1687 bool "32-bit kernel"
1688 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1691 Select this option if you want to build a 32-bit kernel.
1693 bool "64-bit kernel"
1694 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1696 Select this option if you want to build a 64-bit kernel.
1701 bool "KVM Guest Kernel"
1702 depends on BROKEN_ON_SMP
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
1862 select SYS_SUPPORTS_SCHED_SMT if SMP
1863 select SYS_SUPPORTS_SMP
1865 select MIPS_PERF_SHARED_TC_COUNTERS
1867 This is a kernel model which is known a VSMP but lately has been
1868 marketesed into SMVP.
1869 Virtual SMP uses the processor's VPEs to implement virtual
1870 processors. In currently available configuration of the 34K processor
1871 this allows for a dual processor. Both processors will share the same
1872 primary caches; each will obtain the half of the TLB for it's own
1873 exclusive use. For a layman this model can be described as similar to
1874 what Intel calls Hyperthreading.
1876 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1879 bool "SMTC: Use all TCs on all VPEs for SMP"
1880 depends on CPU_MIPS32_R2
1881 #depends on CPU_MIPS64_R2 # once there is hardware ...
1882 depends on SYS_SUPPORTS_MULTITHREADING
1883 select CPU_MIPSR2_IRQ_VI
1884 select CPU_MIPSR2_IRQ_EI
1886 select NR_CPUS_DEFAULT_8
1888 select SYS_SUPPORTS_SMP
1891 This is a kernel model which is known a SMTC or lately has been
1892 marketesed into SMVP.
1893 is presenting the available TC's of the core as processors to Linux.
1894 On currently available 34K processors this means a Linux system will
1895 see up to 5 processors. The implementation of the SMTC kernel differs
1896 significantly from VSMP and cannot efficiently coexist in the same
1897 kernel binary so the choice between VSMP and SMTC is a compile time
1900 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1908 bool "SMT (multithreading) scheduler support"
1909 depends on SYS_SUPPORTS_SCHED_SMT
1912 SMT scheduler support improves the CPU scheduler's decision making
1913 when dealing with MIPS MT enabled cores at a cost of slightly
1914 increased overhead in some places. If unsure say N here.
1916 config SYS_SUPPORTS_SCHED_SMT
1919 config SYS_SUPPORTS_MULTITHREADING
1922 config MIPS_MT_FPAFF
1923 bool "Dynamic FPU affinity for FP-intensive threads"
1925 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1927 config MIPS_VPE_LOADER
1928 bool "VPE loader support."
1929 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1930 select CPU_MIPSR2_IRQ_VI
1931 select CPU_MIPSR2_IRQ_EI
1934 Includes a loader for loading an elf relocatable object
1935 onto another VPE and running it.
1937 config MIPS_MT_SMTC_IM_BACKSTOP
1938 bool "Use per-TC register bits as backstop for inhibited IM bits"
1939 depends on MIPS_MT_SMTC
1942 To support multiple TC microthreads acting as "CPUs" within
1943 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1944 during interrupt handling. To support legacy drivers and interrupt
1945 controller management code, SMTC has a "backstop" to track and
1946 if necessary restore the interrupt mask. This has some performance
1947 impact on interrupt service overhead.
1949 config MIPS_MT_SMTC_IRQAFF
1950 bool "Support IRQ affinity API"
1951 depends on MIPS_MT_SMTC
1954 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1955 for SMTC Linux kernel. Requires platform support, of which
1956 an example can be found in the MIPS kernel i8259 and Malta
1957 platform code. Adds some overhead to interrupt dispatch, and
1958 should be used only if you know what you are doing.
1960 config MIPS_VPE_LOADER_TOM
1961 bool "Load VPE program into memory hidden from linux"
1962 depends on MIPS_VPE_LOADER
1965 The loader can use memory that is present but has been hidden from
1966 Linux using the kernel command line option "mem=xxMB". It's up to
1967 you to ensure the amount you put in the option and the space your
1968 program requires is less or equal to the amount physically present.
1970 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1971 config MIPS_VPE_APSP_API
1972 bool "Enable support for AP/SP API (RTLX)"
1973 depends on MIPS_VPE_LOADER
1977 bool "MIPS CMP framework support"
1978 depends on SYS_SUPPORTS_MIPS_CMP
1980 select SYS_SUPPORTS_SMP
1981 select SYS_SUPPORTS_SCHED_SMT if SMP
1982 select WEAK_ORDERING
1985 This is a placeholder option for the GCMP work. It will need to
1986 be handled differently...
1988 config SB1_PASS_1_WORKAROUNDS
1990 depends on CPU_SB1_PASS_1
1993 config SB1_PASS_2_WORKAROUNDS
1995 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1998 config SB1_PASS_2_1_WORKAROUNDS
2000 depends on CPU_SB1 && CPU_SB1_PASS_2
2004 config 64BIT_PHYS_ADDR
2007 config ARCH_PHYS_ADDR_T_64BIT
2008 def_bool 64BIT_PHYS_ADDR
2010 config CPU_HAS_SMARTMIPS
2011 depends on SYS_SUPPORTS_SMARTMIPS
2012 bool "Support for the SmartMIPS ASE"
2014 SmartMIPS is a extension of the MIPS32 architecture aimed at
2015 increased security at both hardware and software level for
2016 smartcards. Enabling this option will allow proper use of the
2017 SmartMIPS instructions by Linux applications. However a kernel with
2018 this option will not work on a MIPS core without SmartMIPS core. If
2019 you don't know you probably don't have SmartMIPS and should say N
2022 config CPU_MICROMIPS
2023 depends on SYS_SUPPORTS_MICROMIPS
2024 bool "Build kernel using microMIPS ISA"
2026 When this option is enabled the kernel will be built using the
2036 # Vectored interrupt mode is an R2 feature
2038 config CPU_MIPSR2_IRQ_VI
2042 # Extended interrupt mode is an R2 feature
2044 config CPU_MIPSR2_IRQ_EI
2049 depends on !CPU_R3000
2055 config CPU_DADDI_WORKAROUNDS
2058 config CPU_R4000_WORKAROUNDS
2060 select CPU_R4400_WORKAROUNDS
2062 config CPU_R4400_WORKAROUNDS
2066 # - Highmem only makes sense for the 32-bit kernel.
2067 # - The current highmem code will only work properly on physically indexed
2068 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2069 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2070 # moment we protect the user and offer the highmem option only on machines
2071 # where it's known to be safe. This will not offer highmem on a few systems
2072 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2073 # indexed CPUs but we're playing safe.
2074 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2075 # know they might have memory configurations that could make use of highmem
2079 bool "High Memory Support"
2080 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2082 config CPU_SUPPORTS_HIGHMEM
2085 config SYS_SUPPORTS_HIGHMEM
2088 config SYS_SUPPORTS_SMARTMIPS
2091 config SYS_SUPPORTS_MICROMIPS
2094 config ARCH_FLATMEM_ENABLE
2096 depends on !NUMA && !CPU_LOONGSON2
2098 config ARCH_DISCONTIGMEM_ENABLE
2100 default y if SGI_IP27
2102 Say Y to support efficient handling of discontiguous physical memory,
2103 for architectures which are either NUMA (Non-Uniform Memory Access)
2104 or have huge holes in the physical address space for other reasons.
2105 See <file:Documentation/vm/numa> for more.
2107 config ARCH_SPARSEMEM_ENABLE
2109 select SPARSEMEM_STATIC
2113 depends on SYS_SUPPORTS_NUMA
2115 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2116 Access). This option improves performance on systems with more
2117 than two nodes; on two node systems it is generally better to
2118 leave it disabled; on single node systems disable this option
2121 config SYS_SUPPORTS_NUMA
2127 depends on NEED_MULTIPLE_NODES
2129 config HW_PERF_EVENTS
2130 bool "Enable hardware performance counter support for perf events"
2131 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2134 Enable hardware performance counter support for perf events. If
2135 disabled, perf events will use software events only.
2140 bool "Multi-Processing support"
2141 depends on SYS_SUPPORTS_SMP
2142 select USE_GENERIC_SMP_HELPERS
2144 This enables support for systems with more than one CPU. If you have
2145 a system with only one CPU, like most personal computers, say N. If
2146 you have a system with more than one CPU, say Y.
2148 If you say N here, the kernel will run on single and multiprocessor
2149 machines, but will use only one CPU of a multiprocessor machine. If
2150 you say Y here, the kernel will run on many, but not all,
2151 singleprocessor machines. On a singleprocessor machine, the kernel
2152 will run faster if you say N here.
2154 People using multiprocessor machines who say Y here should also say
2155 Y to "Enhanced Real Time Clock Support", below.
2157 See also the SMP-HOWTO available at
2158 <http://www.tldp.org/docs.html#howto>.
2160 If you don't know what to do here, say N.
2165 config SYS_SUPPORTS_MIPS_CMP
2168 config SYS_SUPPORTS_SMP
2171 config NR_CPUS_DEFAULT_4
2174 config NR_CPUS_DEFAULT_8
2177 config NR_CPUS_DEFAULT_16
2180 config NR_CPUS_DEFAULT_32
2183 config NR_CPUS_DEFAULT_64
2187 int "Maximum number of CPUs (2-64)"
2190 default "4" if NR_CPUS_DEFAULT_4
2191 default "8" if NR_CPUS_DEFAULT_8
2192 default "16" if NR_CPUS_DEFAULT_16
2193 default "32" if NR_CPUS_DEFAULT_32
2194 default "64" if NR_CPUS_DEFAULT_64
2196 This allows you to specify the maximum number of CPUs which this
2197 kernel will support. The maximum supported value is 32 for 32-bit
2198 kernel and 64 for 64-bit kernels; the minimum value which makes
2199 sense is 1 for Qemu (useful only for kernel debugging purposes)
2200 and 2 for all others.
2202 This is purely to save memory - each supported CPU adds
2203 approximately eight kilobytes to the kernel image. For best
2204 performance should round up your number of processors to the next
2207 config MIPS_PERF_SHARED_TC_COUNTERS
2211 # Timer Interrupt Frequency Configuration
2215 prompt "Timer frequency"
2218 Allows the configuration of the timer frequency.
2221 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2224 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2227 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2230 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2233 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2236 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2239 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2243 config SYS_SUPPORTS_48HZ
2246 config SYS_SUPPORTS_100HZ
2249 config SYS_SUPPORTS_128HZ
2252 config SYS_SUPPORTS_250HZ
2255 config SYS_SUPPORTS_256HZ
2258 config SYS_SUPPORTS_1000HZ
2261 config SYS_SUPPORTS_1024HZ
2264 config SYS_SUPPORTS_ARBIT_HZ
2266 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2267 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2268 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2269 !SYS_SUPPORTS_1024HZ
2274 default 100 if HZ_100
2275 default 128 if HZ_128
2276 default 250 if HZ_250
2277 default 256 if HZ_256
2278 default 1000 if HZ_1000
2279 default 1024 if HZ_1024
2281 source "kernel/Kconfig.preempt"
2284 bool "Kexec system call"
2286 kexec is a system call that implements the ability to shutdown your
2287 current kernel, and to start another kernel. It is like a reboot
2288 but it is independent of the system firmware. And like a reboot
2289 you can start any kernel with it, not just Linux.
2291 The name comes from the similarity to the exec system call.
2293 It is an ongoing process to be certain the hardware in a machine
2294 is properly shutdown, so do not be surprised if this code does not
2295 initially work for you. It may help to enable device hotplugging
2296 support. As of this writing the exact hardware interface is
2297 strongly in flux, so no good recommendation can be made.
2300 bool "Kernel crash dumps"
2302 Generate crash dump after being started by kexec.
2303 This should be normally only set in special crash dump kernels
2304 which are loaded in the main kernel with kexec-tools into
2305 a specially reserved region and then later executed after
2306 a crash by kdump/kexec. The crash dump kernel must be compiled
2307 to a memory address not used by the main kernel or firmware using
2310 config PHYSICAL_START
2311 hex "Physical address where the kernel is loaded"
2312 default "0xffffffff84000000" if 64BIT
2313 default "0x84000000" if 32BIT
2314 depends on CRASH_DUMP
2316 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2317 If you plan to use kernel for capturing the crash dump change
2318 this value to start of the reserved region (the "X" value as
2319 specified in the "crashkernel=YM@XM" command line boot parameter
2320 passed to the panic-ed kernel).
2323 bool "Enable seccomp to safely compute untrusted bytecode"
2327 This kernel feature is useful for number crunching applications
2328 that may need to compute untrusted bytecode during their
2329 execution. By using pipes or other transports made available to
2330 the process as file descriptors supporting the read/write
2331 syscalls, it's possible to isolate those applications in
2332 their own address space using seccomp. Once seccomp is
2333 enabled via /proc/<pid>/seccomp, it cannot be disabled
2334 and the task is only allowed to execute a few safe syscalls
2335 defined by each seccomp mode.
2337 If unsure, say Y. Only embedded should say N here.
2339 config CC_STACKPROTECTOR
2340 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2342 This option turns on the -fstack-protector GCC feature. This
2343 feature puts, at the beginning of functions, a canary value on
2344 the stack just before the return address, and validates
2345 the value just before actually returning. Stack based buffer
2346 overflows (that need to overwrite this return address) now also
2347 overwrite the canary, which gets detected and the attack is then
2348 neutralized via a kernel panic.
2350 This feature requires gcc version 4.2 or above.
2355 select OF_EARLY_FLATTREE
2360 config LOCKDEP_SUPPORT
2364 config STACKTRACE_SUPPORT
2368 source "init/Kconfig"
2370 source "kernel/Kconfig.freezer"
2372 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2380 bool "Support for PCI controller"
2381 depends on HW_HAS_PCI
2383 select NO_GENERIC_PCI_IOPORT_MAP
2385 Find out whether you have a PCI motherboard. PCI is the name of a
2386 bus system, i.e. the way the CPU talks to the other stuff inside
2387 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2393 source "drivers/pci/Kconfig"
2395 source "drivers/pci/pcie/Kconfig"
2398 # ISA support is now enabled via select. Too many systems still have the one
2399 # or other ISA chip on the board that users don't know about so don't expect
2400 # users to choose the right thing ...
2407 depends on HW_HAS_EISA
2409 select GENERIC_ISA_DMA
2411 The Extended Industry Standard Architecture (EISA) bus was
2412 developed as an open alternative to the IBM MicroChannel bus.
2414 The EISA bus provided some of the features of the IBM MicroChannel
2415 bus while maintaining backward compatibility with cards made for
2416 the older ISA bus. The EISA bus saw limited use between 1988 and
2417 1995 when it was made obsolete by the PCI bus.
2419 Say Y here if you are building a kernel for an EISA-based machine.
2423 source "drivers/eisa/Kconfig"
2426 bool "TURBOchannel support"
2427 depends on MACH_DECSTATION
2429 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2430 processors. TURBOchannel programming specifications are available
2432 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2434 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2435 Linux driver support status is documented at:
2436 <http://www.linux-mips.org/wiki/DECstation>
2446 select MIPS_EXTERNAL_TIMER
2454 source "drivers/pcmcia/Kconfig"
2456 source "drivers/pci/hotplug/Kconfig"
2459 bool "RapidIO support"
2463 If you say Y here, the kernel will include drivers and
2464 infrastructure code to support RapidIO interconnect devices.
2466 source "drivers/rapidio/Kconfig"
2470 menu "Executable file formats"
2472 source "fs/Kconfig.binfmt"
2477 config MIPS32_COMPAT
2478 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2481 Select this option if you want Linux/MIPS 32-bit binary
2482 compatibility. Since all software available for Linux/MIPS is
2483 currently 32-bit you should say Y here.
2487 depends on MIPS32_COMPAT
2488 select ARCH_WANT_OLD_COMPAT_IPC
2491 config SYSVIPC_COMPAT
2493 depends on COMPAT && SYSVIPC
2497 bool "Kernel support for o32 binaries"
2498 depends on MIPS32_COMPAT
2500 Select this option if you want to run o32 binaries. These are pure
2501 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2502 existing binaries are in this format.
2507 bool "Kernel support for n32 binaries"
2508 depends on MIPS32_COMPAT
2510 Select this option if you want to run n32 binaries. These are
2511 64-bit binaries using 32-bit quantities for addressing and certain
2512 data that would normally be 64-bit. They are used in special
2519 default y if MIPS32_O32 || MIPS32_N32
2523 menu "Power management options"
2525 config ARCH_HIBERNATION_POSSIBLE
2527 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2529 config ARCH_SUSPEND_POSSIBLE
2531 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2533 source "kernel/power/Kconfig"
2537 config MIPS_EXTERNAL_TIMER
2540 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2541 menu "CPU Power Management"
2542 source "drivers/cpufreq/Kconfig"
2546 source "net/Kconfig"
2548 source "drivers/Kconfig"
2550 source "drivers/firmware/Kconfig"
2554 source "arch/mips/Kconfig.debug"
2556 source "security/Kconfig"
2558 source "crypto/Kconfig"
2560 source "lib/Kconfig"
2562 source "arch/mips/kvm/Kconfig"