4 select HAVE_GENERIC_DMA_COHERENT
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
10 select ARCH_HAVE_CUSTOM_GPIO_H
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select HAVE_DEBUG_KMEMLEAK
20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
21 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
22 select RTC_LIB if !MACH_LOONGSON
23 select GENERIC_ATOMIC64 if !64BIT
24 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
26 select HAVE_DMA_API_DEBUG
27 select HAVE_GENERIC_HARDIRQS
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select HAVE_ARCH_JUMP_LABEL
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select IRQ_FORCED_THREADING
34 select HAVE_MEMBLOCK_NODE_MAP
35 select ARCH_DISCARD_MEMBLOCK
36 select GENERIC_SMP_IDLE_THREAD
37 select BUILDTIME_EXTABLE_SORT
38 select GENERIC_CLOCKEVENTS
39 select GENERIC_CMOS_UPDATE
40 select HAVE_MOD_ARCH_SPECIFIC
42 select MODULES_USE_ELF_REL if MODULES
43 select MODULES_USE_ELF_RELA if MODULES && 64BIT
44 select CLONE_BACKWARDS
46 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"
128 select DMA_NONCOHERENT
130 select SYS_HAS_CPU_MIPS32_R1
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_BIG_ENDIAN
133 select SYS_HAS_EARLY_PRINTK
135 select ARCH_REQUIRE_GPIOLIB
138 Support for BCM63XX based boards
145 select DMA_NONCOHERENT
151 select PCI_GT64XXX_PCI0
153 select SYS_HAS_CPU_NEVADA
154 select SYS_HAS_EARLY_PRINTK
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_64BIT_KERNEL
157 select SYS_SUPPORTS_LITTLE_ENDIAN
159 config MACH_DECSTATION
166 select CPU_DADDI_WORKAROUNDS if 64BIT
167 select CPU_R4000_WORKAROUNDS if 64BIT
168 select CPU_R4400_WORKAROUNDS if 64BIT
169 select DMA_NONCOHERENT
172 select SYS_HAS_CPU_R3000
173 select SYS_HAS_CPU_R4X00
174 select SYS_SUPPORTS_32BIT_KERNEL
175 select SYS_SUPPORTS_64BIT_KERNEL
176 select SYS_SUPPORTS_LITTLE_ENDIAN
177 select SYS_SUPPORTS_128HZ
178 select SYS_SUPPORTS_256HZ
179 select SYS_SUPPORTS_1024HZ
181 This enables support for DEC's MIPS based workstations. For details
182 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
183 DECstation porting pages on <http://decstation.unix-ag.org/>.
185 If you have one of the following DECstation Models you definitely
186 want to choose R4xx0 for the CPU Type:
193 otherwise choose R3000.
196 bool "Jazz family of machines"
199 select ARCH_MAY_HAVE_PC_FDC
202 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
203 select GENERIC_ISA_DMA
204 select HAVE_PCSPKR_PLATFORM
209 select SYS_HAS_CPU_R4X00
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_64BIT_KERNEL
212 select SYS_SUPPORTS_100HZ
214 This a family of machines based on the MIPS R4030 chipset which was
215 used by several vendors to build RISC/os and Windows NT workstations.
216 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
217 Olivetti M700-10 workstations.
220 bool "Ingenic JZ4740 based machines"
221 select SYS_HAS_CPU_MIPS32_R1
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_ZBOOT_UART16550
225 select DMA_NONCOHERENT
227 select ARCH_REQUIRE_GPIOLIB
228 select SYS_HAS_EARLY_PRINTK
231 select GENERIC_IRQ_CHIP
234 bool "Lantiq based platforms"
235 select DMA_NONCOHERENT
239 select SYS_HAS_CPU_MIPS32_R1
240 select SYS_HAS_CPU_MIPS32_R2
241 select SYS_SUPPORTS_BIG_ENDIAN
242 select SYS_SUPPORTS_32BIT_KERNEL
243 select SYS_SUPPORTS_MULTITHREADING
244 select SYS_HAS_EARLY_PRINTK
245 select ARCH_REQUIRE_GPIOLIB
248 select HAVE_MACH_CLKDEV
252 select PINCTRL_LANTIQ
255 bool "LASAT Networks platforms"
258 select DMA_NONCOHERENT
259 select SYS_HAS_EARLY_PRINTK
262 select PCI_GT64XXX_PCI0
264 select R5000_CPU_SCACHE
265 select SYS_HAS_CPU_R5000
266 select SYS_SUPPORTS_32BIT_KERNEL
267 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
268 select SYS_SUPPORTS_LITTLE_ENDIAN
271 bool "Loongson family of machines"
272 select SYS_SUPPORTS_ZBOOT
274 This enables the support of Loongson family of machines.
276 Loongson is a family of general-purpose MIPS-compatible CPUs.
277 developed at Institute of Computing Technology (ICT),
278 Chinese Academy of Sciences (CAS) in the People's Republic
279 of China. The chief architect is Professor Weiwu Hu.
281 config MACH_LOONGSON1
282 bool "Loongson 1 family of machines"
283 select SYS_SUPPORTS_ZBOOT
285 This enables support for the Loongson 1 based machines.
287 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
288 the ICT (Institute of Computing Technology) and the Chinese Academy
292 bool "MIPS Malta board"
293 select ARCH_MAY_HAVE_PC_FDC
299 select DMA_NONCOHERENT
300 select GENERIC_ISA_DMA
301 select HAVE_PCSPKR_PLATFORM
308 select MIPS_CPU_SCACHE
309 select PCI_GT64XXX_PCI0
312 select SYS_HAS_CPU_MIPS32_R1
313 select SYS_HAS_CPU_MIPS32_R2
314 select SYS_HAS_CPU_MIPS64_R1
315 select SYS_HAS_CPU_MIPS64_R2
316 select SYS_HAS_CPU_NEVADA
317 select SYS_HAS_CPU_RM7000
318 select SYS_HAS_EARLY_PRINTK
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_64BIT_KERNEL
321 select SYS_SUPPORTS_BIG_ENDIAN
322 select SYS_SUPPORTS_LITTLE_ENDIAN
323 select SYS_SUPPORTS_MIPS_CMP
324 select SYS_SUPPORTS_MULTITHREADING
325 select SYS_SUPPORTS_SMARTMIPS
326 select SYS_SUPPORTS_ZBOOT
328 This enables support for the MIPS Technologies Malta evaluation
332 bool "MIPS SEAD3 board"
338 select CPU_MIPSR2_IRQ_VI
339 select CPU_MIPSR2_IRQ_EI
340 select DMA_NONCOHERENT
343 select MIPS_CPU_SCACHE
345 select SYS_HAS_CPU_MIPS32_R1
346 select SYS_HAS_CPU_MIPS32_R2
347 select SYS_HAS_CPU_MIPS64_R1
348 select SYS_HAS_EARLY_PRINTK
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL
351 select SYS_SUPPORTS_BIG_ENDIAN
352 select SYS_SUPPORTS_LITTLE_ENDIAN
353 select SYS_SUPPORTS_SMARTMIPS
354 select SYS_SUPPORTS_MICROMIPS
355 select USB_ARCH_HAS_EHCI
356 select USB_EHCI_BIG_ENDIAN_DESC
357 select USB_EHCI_BIG_ENDIAN_MMIO
360 This enables support for the MIPS Technologies SEAD3 evaluation
364 bool "NEC EMMA2RH Mark-eins board"
368 This enables support for the NEC Electronics Mark-eins boards.
371 bool "NEC VR4100 series based machines"
374 select SYS_HAS_CPU_VR41XX
375 select ARCH_REQUIRE_GPIOLIB
378 bool "NXP STB220 board"
381 Support for NXP Semiconductors STB220 Development Board.
388 Support for NXP Semiconductors STB225 Development Board.
391 bool "PMC-Sierra MSP chipsets"
394 select DMA_NONCOHERENT
396 select NO_EXCEPT_FILL
398 select SYS_HAS_CPU_MIPS32_R1
399 select SYS_HAS_CPU_MIPS32_R2
400 select SYS_SUPPORTS_32BIT_KERNEL
401 select SYS_SUPPORTS_BIG_ENDIAN
404 select SERIAL_8250_CONSOLE
405 select USB_EHCI_BIG_ENDIAN_MMIO
406 select USB_EHCI_BIG_ENDIAN_DESC
408 This adds support for the PMC-Sierra family of Multi-Service
409 Processor System-On-A-Chips. These parts include a number
410 of integrated peripherals, interfaces and DSPs in addition to
411 a variety of MIPS cores.
417 select CPU_MIPSR2_IRQ_VI
418 select CPU_MIPSR2_IRQ_EI
420 select DMA_NONCOHERENT
422 select SYS_HAS_CPU_MIPS32_R2
423 select SYS_SUPPORTS_32BIT_KERNEL
424 select SYS_SUPPORTS_BIG_ENDIAN
425 select SYS_SUPPORTS_HIGHMEM
426 select USB_OHCI_LITTLE_ENDIAN
428 This enables support for the Cisco PowerTV Platform.
431 bool "Ralink based machines"
435 select DMA_NONCOHERENT
438 select SYS_HAS_CPU_MIPS32_R1
439 select SYS_HAS_CPU_MIPS32_R2
440 select SYS_SUPPORTS_32BIT_KERNEL
441 select SYS_SUPPORTS_LITTLE_ENDIAN
442 select SYS_HAS_EARLY_PRINTK
443 select HAVE_MACH_CLKDEV
447 bool "SGI IP22 (Indy/Indigo2)"
453 select DEFAULT_SGI_PARTITION
454 select DMA_NONCOHERENT
458 select IP22_CPU_SCACHE
460 select GENERIC_ISA_DMA_SUPPORT_BROKEN
462 select SGI_HAS_INDYDOG
468 select SYS_HAS_CPU_R4X00
469 select SYS_HAS_CPU_R5000
471 # Disable EARLY_PRINTK for now since it leads to overwritten prom
472 # memory during early boot on some machines.
474 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
475 # for a more details discussion
477 # select SYS_HAS_EARLY_PRINTK
478 select SYS_SUPPORTS_32BIT_KERNEL
479 select SYS_SUPPORTS_64BIT_KERNEL
480 select SYS_SUPPORTS_BIG_ENDIAN
482 This are the SGI Indy, Challenge S and Indigo2, as well as certain
483 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
484 that runs on these, say Y here.
487 bool "SGI IP27 (Origin200/2000)"
491 select DEFAULT_SGI_PARTITION
493 select SYS_HAS_EARLY_PRINTK
495 select NR_CPUS_DEFAULT_64
496 select SYS_HAS_CPU_R10000
497 select SYS_SUPPORTS_64BIT_KERNEL
498 select SYS_SUPPORTS_BIG_ENDIAN
499 select SYS_SUPPORTS_NUMA
500 select SYS_SUPPORTS_SMP
502 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
503 workstations. To compile a Linux kernel that runs on these, say Y
507 bool "SGI IP28 (Indigo2 R10k)"
513 select DEFAULT_SGI_PARTITION
514 select DMA_NONCOHERENT
515 select GENERIC_ISA_DMA_SUPPORT_BROKEN
521 select SGI_HAS_INDYDOG
527 select SYS_HAS_CPU_R10000
529 # Disable EARLY_PRINTK for now since it leads to overwritten prom
530 # memory during early boot on some machines.
532 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
533 # for a more details discussion
535 # select SYS_HAS_EARLY_PRINTK
536 select SYS_SUPPORTS_64BIT_KERNEL
537 select SYS_SUPPORTS_BIG_ENDIAN
539 This is the SGI Indigo2 with R10000 processor. To compile a Linux
540 kernel that runs on these, say Y here.
549 select DMA_NONCOHERENT
552 select R5000_CPU_SCACHE
553 select RM7000_CPU_SCACHE
554 select SYS_HAS_CPU_R5000
555 select SYS_HAS_CPU_R10000 if BROKEN
556 select SYS_HAS_CPU_RM7000
557 select SYS_HAS_CPU_NEVADA
558 select SYS_SUPPORTS_64BIT_KERNEL
559 select SYS_SUPPORTS_BIG_ENDIAN
561 If you want this kernel to run on SGI O2 workstation, say Y here.
564 bool "Sibyte BCM91120C-CRhine"
567 select SIBYTE_BCM1120
569 select SYS_HAS_CPU_SB1
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_LITTLE_ENDIAN
574 bool "Sibyte BCM91120x-Carmel"
577 select SIBYTE_BCM1120
579 select SYS_HAS_CPU_SB1
580 select SYS_SUPPORTS_BIG_ENDIAN
581 select SYS_SUPPORTS_LITTLE_ENDIAN
584 bool "Sibyte BCM91125C-CRhone"
587 select SIBYTE_BCM1125
589 select SYS_HAS_CPU_SB1
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_HIGHMEM
592 select SYS_SUPPORTS_LITTLE_ENDIAN
595 bool "Sibyte BCM91125E-Rhone"
598 select SIBYTE_BCM1125H
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_LITTLE_ENDIAN
605 bool "Sibyte BCM91250A-SWARM"
608 select HAVE_PATA_PLATFORM
609 select NR_CPUS_DEFAULT_2
612 select SYS_HAS_CPU_SB1
613 select SYS_SUPPORTS_BIG_ENDIAN
614 select SYS_SUPPORTS_HIGHMEM
615 select SYS_SUPPORTS_LITTLE_ENDIAN
616 select ZONE_DMA32 if 64BIT
618 config SIBYTE_LITTLESUR
619 bool "Sibyte BCM91250C2-LittleSur"
622 select HAVE_PATA_PLATFORM
623 select NR_CPUS_DEFAULT_2
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"
635 select NR_CPUS_DEFAULT_2
638 select SYS_HAS_CPU_SB1
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select SYS_SUPPORTS_LITTLE_ENDIAN
643 bool "Sibyte BCM91480B-BigSur"
646 select NR_CPUS_DEFAULT_4
647 select SIBYTE_BCM1x80
649 select SYS_HAS_CPU_SB1
650 select SYS_SUPPORTS_BIG_ENDIAN
651 select SYS_SUPPORTS_HIGHMEM
652 select SYS_SUPPORTS_LITTLE_ENDIAN
653 select ZONE_DMA32 if 64BIT
656 bool "SNI RM200/300/400"
657 select FW_ARC if CPU_LITTLE_ENDIAN
658 select FW_ARC32 if CPU_LITTLE_ENDIAN
659 select FW_SNIPROM if CPU_BIG_ENDIAN
660 select ARCH_MAY_HAVE_PC_FDC
664 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
665 select DMA_NONCOHERENT
666 select GENERIC_ISA_DMA
667 select HAVE_PCSPKR_PLATFORM
674 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
675 select SYS_HAS_CPU_R4X00
676 select SYS_HAS_CPU_R5000
677 select SYS_HAS_CPU_R10000
678 select R5000_CPU_SCACHE
679 select SYS_HAS_EARLY_PRINTK
680 select SYS_SUPPORTS_32BIT_KERNEL
681 select SYS_SUPPORTS_64BIT_KERNEL
682 select SYS_SUPPORTS_BIG_ENDIAN
683 select SYS_SUPPORTS_HIGHMEM
684 select SYS_SUPPORTS_LITTLE_ENDIAN
686 The SNI RM200/300/400 are MIPS-based machines manufactured by
687 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
688 Technology and now in turn merged with Fujitsu. Say Y here to
689 support this machine type.
692 bool "Toshiba TX39 series based machines"
695 bool "Toshiba TX49 series based machines"
697 config MIKROTIK_RB532
698 bool "Mikrotik RB532 boards"
701 select DMA_NONCOHERENT
704 select SYS_HAS_CPU_MIPS32_R1
705 select SYS_SUPPORTS_32BIT_KERNEL
706 select SYS_SUPPORTS_LITTLE_ENDIAN
709 select ARCH_REQUIRE_GPIOLIB
711 Support the Mikrotik(tm) RouterBoard 532 series,
712 based on the IDT RC32434 SoC.
715 bool "Wind River PPMC board"
720 select DMA_NONCOHERENT
722 select PCI_GT64XXX_PCI0
724 select SYS_HAS_CPU_MIPS32_R1
725 select SYS_HAS_CPU_MIPS32_R2
726 select SYS_HAS_CPU_MIPS64_R1
727 select SYS_HAS_CPU_NEVADA
728 select SYS_HAS_CPU_RM7000
729 select SYS_SUPPORTS_32BIT_KERNEL
730 select SYS_SUPPORTS_64BIT_KERNEL
731 select SYS_SUPPORTS_BIG_ENDIAN
732 select SYS_SUPPORTS_LITTLE_ENDIAN
734 This enables support for the Wind River MIPS32 4KC PPMC evaluation
735 board, which is based on GT64120 bridge chip.
737 config CAVIUM_OCTEON_SIMULATOR
738 bool "Cavium Networks Octeon Simulator"
740 select 64BIT_PHYS_ADDR
742 select SYS_SUPPORTS_64BIT_KERNEL
743 select SYS_SUPPORTS_BIG_ENDIAN
744 select SYS_SUPPORTS_HOTPLUG_CPU
745 select SYS_HAS_CPU_CAVIUM_OCTEON
748 The Octeon simulator is software performance model of the Cavium
749 Octeon Processor. It supports simulating Octeon processors on x86
752 config CAVIUM_OCTEON_REFERENCE_BOARD
753 bool "Cavium Networks Octeon reference board"
755 select 64BIT_PHYS_ADDR
757 select SYS_SUPPORTS_64BIT_KERNEL
758 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_HOTPLUG_CPU
761 select SYS_HAS_EARLY_PRINTK
762 select SYS_HAS_CPU_CAVIUM_OCTEON
765 select ARCH_SUPPORTS_MSI
767 select USB_ARCH_HAS_OHCI
768 select USB_ARCH_HAS_EHCI
771 This option supports all of the Octeon reference boards from Cavium
772 Networks. It builds a kernel that dynamically determines the Octeon
773 CPU type and supports all known board reference implementations.
774 Some of the supported boards are:
781 Say Y here for most Octeon reference boards.
784 bool "Netlogic XLR/XLS based systems"
787 select SYS_HAS_CPU_XLR
788 select SYS_SUPPORTS_SMP
791 select SYS_SUPPORTS_32BIT_KERNEL
792 select SYS_SUPPORTS_64BIT_KERNEL
793 select 64BIT_PHYS_ADDR
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
797 select NR_CPUS_DEFAULT_32
801 select ARCH_SUPPORTS_MSI
802 select ZONE_DMA32 if 64BIT
804 select SYS_HAS_EARLY_PRINTK
805 select USB_ARCH_HAS_OHCI if USB_SUPPORT
806 select USB_ARCH_HAS_EHCI if USB_SUPPORT
808 Support for systems based on Netlogic XLR and XLS processors.
809 Say Y here if you have a XLR or XLS based board.
812 bool "Netlogic XLP based systems"
815 select SYS_HAS_CPU_XLP
816 select SYS_SUPPORTS_SMP
818 select SYS_SUPPORTS_32BIT_KERNEL
819 select SYS_SUPPORTS_64BIT_KERNEL
820 select 64BIT_PHYS_ADDR
821 select SYS_SUPPORTS_BIG_ENDIAN
822 select SYS_SUPPORTS_LITTLE_ENDIAN
823 select SYS_SUPPORTS_HIGHMEM
825 select NR_CPUS_DEFAULT_32
829 select ZONE_DMA32 if 64BIT
831 select SYS_HAS_EARLY_PRINTK
834 This board is based on Netlogic XLP Processor.
835 Say Y here if you have a XLP based board.
839 source "arch/mips/alchemy/Kconfig"
840 source "arch/mips/ath79/Kconfig"
841 source "arch/mips/bcm47xx/Kconfig"
842 source "arch/mips/bcm63xx/Kconfig"
843 source "arch/mips/jazz/Kconfig"
844 source "arch/mips/jz4740/Kconfig"
845 source "arch/mips/lantiq/Kconfig"
846 source "arch/mips/lasat/Kconfig"
847 source "arch/mips/pmcs-msp71xx/Kconfig"
848 source "arch/mips/powertv/Kconfig"
849 source "arch/mips/ralink/Kconfig"
850 source "arch/mips/sgi-ip27/Kconfig"
851 source "arch/mips/sibyte/Kconfig"
852 source "arch/mips/txx9/Kconfig"
853 source "arch/mips/vr41xx/Kconfig"
854 source "arch/mips/cavium-octeon/Kconfig"
855 source "arch/mips/loongson/Kconfig"
856 source "arch/mips/loongson1/Kconfig"
857 source "arch/mips/netlogic/Kconfig"
861 config RWSEM_GENERIC_SPINLOCK
865 config RWSEM_XCHGADD_ALGORITHM
868 config ARCH_HAS_ILOG2_U32
872 config ARCH_HAS_ILOG2_U64
876 config GENERIC_HWEIGHT
880 config GENERIC_CALIBRATE_DELAY
884 config SCHED_OMIT_FRAME_POINTER
889 # Select some configuration options automatically based on user selections.
894 config ARCH_MAY_HAVE_PC_FDC
940 select ARCH_REQUIRE_GPIOLIB
946 config ARCH_DMA_ADDR_T_64BIT
947 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
952 config DMA_NONCOHERENT
954 select NEED_DMA_MAP_STATE
956 config NEED_DMA_MAP_STATE
959 config SYS_HAS_EARLY_PRINTK
963 bool "Support for hot-pluggable CPUs"
964 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
966 Say Y here to allow turning CPUs off and on. CPUs can be
967 controlled through /sys/devices/system/cpu.
968 (Note: power management support will enable this option
969 automatically on SMP systems. )
970 Say N if you want to disable CPU hotplug.
972 config SYS_SUPPORTS_HOTPLUG_CPU
996 config GENERIC_ISA_DMA
998 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1001 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1003 select GENERIC_ISA_DMA
1008 config HOLES_IN_ZONE
1012 # Endianness selection. Sufficiently obscure so many users don't know what to
1013 # answer,so we try hard to limit the available choices. Also the use of a
1014 # choice statement should be more obvious to the user.
1017 prompt "Endianness selection"
1019 Some MIPS machines can be configured for either little or big endian
1020 byte order. These modes require different kernels and a different
1021 Linux distribution. In general there is one preferred byteorder for a
1022 particular system but some systems are just as commonly used in the
1023 one or the other endianness.
1025 config CPU_BIG_ENDIAN
1027 depends on SYS_SUPPORTS_BIG_ENDIAN
1029 config CPU_LITTLE_ENDIAN
1030 bool "Little endian"
1031 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1038 config SYS_SUPPORTS_APM_EMULATION
1041 config SYS_SUPPORTS_BIG_ENDIAN
1044 config SYS_SUPPORTS_LITTLE_ENDIAN
1047 config SYS_SUPPORTS_HUGETLBFS
1049 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1052 config MIPS_HUGE_TLB_SUPPORT
1053 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1076 config PCI_GT64XXX_PCI0
1079 config NO_EXCEPT_FILL
1086 select DMA_NONCOHERENT
1088 select SWAP_IO_SPACE
1089 select SYS_HAS_CPU_R5500
1090 select SYS_SUPPORTS_32BIT_KERNEL
1091 select SYS_SUPPORTS_64BIT_KERNEL
1092 select SYS_SUPPORTS_BIG_ENDIAN
1099 select DMA_NONCOHERENT
1100 select SYS_HAS_CPU_MIPS32_R2
1101 select SYS_SUPPORTS_32BIT_KERNEL
1102 select SYS_SUPPORTS_LITTLE_ENDIAN
1103 select SYS_SUPPORTS_BIG_ENDIAN
1104 select CPU_MIPSR2_IRQ_VI
1110 config SWAP_IO_SPACE
1113 config SGI_HAS_INDYDOG
1125 config SGI_HAS_ZILOG
1128 config SGI_HAS_I8042
1131 config DEFAULT_SGI_PARTITION
1143 config MIPS_L1_CACHE_SHIFT
1145 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1146 default "6" if MIPS_CPU_SCACHE
1147 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1150 config HAVE_STD_PC_SERIAL_PORT
1154 bool "ARC console support"
1155 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1159 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1164 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1173 menu "CPU selection"
1179 config CPU_LOONGSON2E
1181 depends on SYS_HAS_CPU_LOONGSON2E
1182 select CPU_LOONGSON2
1184 The Loongson 2E processor implements the MIPS III instruction set
1185 with many extensions.
1187 It has an internal FPGA northbridge, which is compatible to
1190 config CPU_LOONGSON2F
1192 depends on SYS_HAS_CPU_LOONGSON2F
1193 select CPU_LOONGSON2
1194 select ARCH_REQUIRE_GPIOLIB
1196 The Loongson 2F processor implements the MIPS III instruction set
1197 with many extensions.
1199 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1200 have a similar programming interface with FPGA northbridge used in
1203 config CPU_LOONGSON1B
1205 depends on SYS_HAS_CPU_LOONGSON1B
1206 select CPU_LOONGSON1
1208 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1209 release 2 instruction set.
1211 config CPU_MIPS32_R1
1212 bool "MIPS32 Release 1"
1213 depends on SYS_HAS_CPU_MIPS32_R1
1214 select CPU_HAS_PREFETCH
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1218 Choose this option to build a kernel for release 1 or later of the
1219 MIPS32 architecture. Most modern embedded systems with a 32-bit
1220 MIPS processor are based on a MIPS32 processor. If you know the
1221 specific type of processor in your system, choose those that one
1222 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1223 Release 2 of the MIPS32 architecture is available since several
1224 years so chances are you even have a MIPS32 Release 2 processor
1225 in which case you should choose CPU_MIPS32_R2 instead for better
1228 config CPU_MIPS32_R2
1229 bool "MIPS32 Release 2"
1230 depends on SYS_HAS_CPU_MIPS32_R2
1231 select CPU_HAS_PREFETCH
1232 select CPU_SUPPORTS_32BIT_KERNEL
1233 select CPU_SUPPORTS_HIGHMEM
1236 Choose this option to build a kernel for release 2 or later of the
1237 MIPS32 architecture. Most modern embedded systems with a 32-bit
1238 MIPS processor are based on a MIPS32 processor. If you know the
1239 specific type of processor in your system, choose those that one
1240 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1242 config CPU_MIPS64_R1
1243 bool "MIPS64 Release 1"
1244 depends on SYS_HAS_CPU_MIPS64_R1
1245 select CPU_HAS_PREFETCH
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_64BIT_KERNEL
1248 select CPU_SUPPORTS_HIGHMEM
1249 select CPU_SUPPORTS_HUGEPAGES
1251 Choose this option to build a kernel for release 1 or later of the
1252 MIPS64 architecture. Many modern embedded systems with a 64-bit
1253 MIPS processor are based on a MIPS64 processor. If you know the
1254 specific type of processor in your system, choose those that one
1255 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1256 Release 2 of the MIPS64 architecture is available since several
1257 years so chances are you even have a MIPS64 Release 2 processor
1258 in which case you should choose CPU_MIPS64_R2 instead for better
1261 config CPU_MIPS64_R2
1262 bool "MIPS64 Release 2"
1263 depends on SYS_HAS_CPU_MIPS64_R2
1264 select CPU_HAS_PREFETCH
1265 select CPU_SUPPORTS_32BIT_KERNEL
1266 select CPU_SUPPORTS_64BIT_KERNEL
1267 select CPU_SUPPORTS_HIGHMEM
1268 select CPU_SUPPORTS_HUGEPAGES
1270 Choose this option to build a kernel for release 2 or later of the
1271 MIPS64 architecture. Many modern embedded systems with a 64-bit
1272 MIPS processor are based on a MIPS64 processor. If you know the
1273 specific type of processor in your system, choose those that one
1274 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1278 depends on SYS_HAS_CPU_R3000
1280 select CPU_SUPPORTS_32BIT_KERNEL
1281 select CPU_SUPPORTS_HIGHMEM
1283 Please make sure to pick the right CPU type. Linux/MIPS is not
1284 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1285 *not* work on R4000 machines and vice versa. However, since most
1286 of the supported machines have an R4000 (or similar) CPU, R4x00
1287 might be a safe bet. If the resulting kernel does not work,
1288 try to recompile with R3000.
1292 depends on SYS_HAS_CPU_TX39XX
1293 select CPU_SUPPORTS_32BIT_KERNEL
1297 depends on SYS_HAS_CPU_VR41XX
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1301 The options selects support for the NEC VR4100 series of processors.
1302 Only choose this option if you have one of these processors as a
1303 kernel built with this option will not run on any other type of
1304 processor or vice versa.
1308 depends on SYS_HAS_CPU_R4300
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1312 MIPS Technologies R4300-series processors.
1316 depends on SYS_HAS_CPU_R4X00
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1319 select CPU_SUPPORTS_HUGEPAGES
1321 MIPS Technologies R4000-series processors other than 4300, including
1322 the R4000, R4400, R4600, and 4700.
1326 depends on SYS_HAS_CPU_TX49XX
1327 select CPU_HAS_PREFETCH
1328 select CPU_SUPPORTS_32BIT_KERNEL
1329 select CPU_SUPPORTS_64BIT_KERNEL
1330 select CPU_SUPPORTS_HUGEPAGES
1334 depends on SYS_HAS_CPU_R5000
1335 select CPU_SUPPORTS_32BIT_KERNEL
1336 select CPU_SUPPORTS_64BIT_KERNEL
1337 select CPU_SUPPORTS_HUGEPAGES
1339 MIPS Technologies R5000-series processors other than the Nevada.
1343 depends on SYS_HAS_CPU_R5432
1344 select CPU_SUPPORTS_32BIT_KERNEL
1345 select CPU_SUPPORTS_64BIT_KERNEL
1346 select CPU_SUPPORTS_HUGEPAGES
1350 depends on SYS_HAS_CPU_R5500
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HUGEPAGES
1355 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1360 depends on SYS_HAS_CPU_R6000
1361 select CPU_SUPPORTS_32BIT_KERNEL
1363 MIPS Technologies R6000 and R6000A series processors. Note these
1364 processors are extremely rare and the support for them is incomplete.
1368 depends on SYS_HAS_CPU_NEVADA
1369 select CPU_SUPPORTS_32BIT_KERNEL
1370 select CPU_SUPPORTS_64BIT_KERNEL
1371 select CPU_SUPPORTS_HUGEPAGES
1373 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1377 depends on SYS_HAS_CPU_R8000
1378 select CPU_HAS_PREFETCH
1379 select CPU_SUPPORTS_64BIT_KERNEL
1381 MIPS Technologies R8000 processors. Note these processors are
1382 uncommon and the support for them is incomplete.
1386 depends on SYS_HAS_CPU_R10000
1387 select CPU_HAS_PREFETCH
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select CPU_SUPPORTS_64BIT_KERNEL
1390 select CPU_SUPPORTS_HIGHMEM
1391 select CPU_SUPPORTS_HUGEPAGES
1393 MIPS Technologies R10000-series processors.
1397 depends on SYS_HAS_CPU_RM7000
1398 select CPU_HAS_PREFETCH
1399 select CPU_SUPPORTS_32BIT_KERNEL
1400 select CPU_SUPPORTS_64BIT_KERNEL
1401 select CPU_SUPPORTS_HIGHMEM
1402 select CPU_SUPPORTS_HUGEPAGES
1406 depends on SYS_HAS_CPU_SB1
1407 select CPU_SUPPORTS_32BIT_KERNEL
1408 select CPU_SUPPORTS_64BIT_KERNEL
1409 select CPU_SUPPORTS_HIGHMEM
1410 select CPU_SUPPORTS_HUGEPAGES
1411 select WEAK_ORDERING
1413 config CPU_CAVIUM_OCTEON
1414 bool "Cavium Octeon processor"
1415 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1416 select ARCH_SPARSEMEM_ENABLE
1417 select CPU_HAS_PREFETCH
1418 select CPU_SUPPORTS_64BIT_KERNEL
1419 select SYS_SUPPORTS_SMP
1420 select NR_CPUS_DEFAULT_16
1421 select WEAK_ORDERING
1422 select CPU_SUPPORTS_HIGHMEM
1423 select CPU_SUPPORTS_HUGEPAGES
1426 select USB_EHCI_BIG_ENDIAN_MMIO
1428 The Cavium Octeon processor is a highly integrated chip containing
1429 many ethernet hardware widgets for networking tasks. The processor
1430 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1431 Full details can be found at http://www.caviumnetworks.com.
1433 config CPU_BMIPS3300
1435 depends on SYS_HAS_CPU_BMIPS3300
1438 Broadcom BMIPS3300 processors.
1440 config CPU_BMIPS4350
1442 depends on SYS_HAS_CPU_BMIPS4350
1444 select SYS_SUPPORTS_SMP
1445 select SYS_SUPPORTS_HOTPLUG_CPU
1447 Broadcom BMIPS4350 ("VIPER") processors.
1449 config CPU_BMIPS4380
1451 depends on SYS_HAS_CPU_BMIPS4380
1453 select SYS_SUPPORTS_SMP
1454 select SYS_SUPPORTS_HOTPLUG_CPU
1456 Broadcom BMIPS4380 processors.
1458 config CPU_BMIPS5000
1460 depends on SYS_HAS_CPU_BMIPS5000
1462 select CPU_SUPPORTS_HIGHMEM
1463 select MIPS_CPU_SCACHE
1464 select SYS_SUPPORTS_SMP
1465 select SYS_SUPPORTS_HOTPLUG_CPU
1467 Broadcom BMIPS5000 processors.
1470 bool "Netlogic XLR SoC"
1471 depends on SYS_HAS_CPU_XLR
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_64BIT_KERNEL
1474 select CPU_SUPPORTS_HIGHMEM
1475 select CPU_SUPPORTS_HUGEPAGES
1476 select WEAK_ORDERING
1477 select WEAK_REORDERING_BEYOND_LLSC
1479 Netlogic Microsystems XLR/XLS processors.
1482 bool "Netlogic XLP SoC"
1483 depends on SYS_HAS_CPU_XLP
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select WEAK_ORDERING
1488 select WEAK_REORDERING_BEYOND_LLSC
1489 select CPU_HAS_PREFETCH
1492 Netlogic Microsystems XLP processors.
1496 config CPU_NOP_WORKAROUNDS
1499 config CPU_JUMP_WORKAROUNDS
1502 config CPU_LOONGSON2F_WORKAROUNDS
1503 bool "Loongson 2F Workarounds"
1505 select CPU_NOP_WORKAROUNDS
1506 select CPU_JUMP_WORKAROUNDS
1508 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1509 require workarounds. Without workarounds the system may hang
1510 unexpectedly. For more information please refer to the gas
1511 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1513 Loongson 2F03 and later have fixed these issues and no workarounds
1514 are needed. The workarounds have no significant side effect on them
1515 but may decrease the performance of the system so this option should
1516 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1519 If unsure, please say Y.
1520 endif # CPU_LOONGSON2F
1522 config SYS_SUPPORTS_ZBOOT
1524 select HAVE_KERNEL_GZIP
1525 select HAVE_KERNEL_BZIP2
1526 select HAVE_KERNEL_LZMA
1527 select HAVE_KERNEL_LZO
1529 config SYS_SUPPORTS_ZBOOT_UART16550
1531 select SYS_SUPPORTS_ZBOOT
1533 config CPU_LOONGSON2
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_64BIT_KERNEL
1537 select CPU_SUPPORTS_HIGHMEM
1538 select CPU_SUPPORTS_HUGEPAGES
1540 config CPU_LOONGSON1
1544 select CPU_HAS_PREFETCH
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select DMA_NONCOHERENT
1554 select SWAP_IO_SPACE
1555 select WEAK_ORDERING
1557 config SYS_HAS_CPU_LOONGSON2E
1560 config SYS_HAS_CPU_LOONGSON2F
1562 select CPU_SUPPORTS_CPUFREQ
1563 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1564 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1566 config SYS_HAS_CPU_LOONGSON1B
1569 config SYS_HAS_CPU_MIPS32_R1
1572 config SYS_HAS_CPU_MIPS32_R2
1575 config SYS_HAS_CPU_MIPS64_R1
1578 config SYS_HAS_CPU_MIPS64_R2
1581 config SYS_HAS_CPU_R3000
1584 config SYS_HAS_CPU_TX39XX
1587 config SYS_HAS_CPU_VR41XX
1590 config SYS_HAS_CPU_R4300
1593 config SYS_HAS_CPU_R4X00
1596 config SYS_HAS_CPU_TX49XX
1599 config SYS_HAS_CPU_R5000
1602 config SYS_HAS_CPU_R5432
1605 config SYS_HAS_CPU_R5500
1608 config SYS_HAS_CPU_R6000
1611 config SYS_HAS_CPU_NEVADA
1614 config SYS_HAS_CPU_R8000
1617 config SYS_HAS_CPU_R10000
1620 config SYS_HAS_CPU_RM7000
1623 config SYS_HAS_CPU_SB1
1626 config SYS_HAS_CPU_CAVIUM_OCTEON
1629 config SYS_HAS_CPU_BMIPS3300
1632 config SYS_HAS_CPU_BMIPS4350
1635 config SYS_HAS_CPU_BMIPS4380
1638 config SYS_HAS_CPU_BMIPS5000
1641 config SYS_HAS_CPU_XLR
1644 config SYS_HAS_CPU_XLP
1648 # CPU may reorder R->R, R->W, W->R, W->W
1649 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1651 config WEAK_ORDERING
1655 # CPU may reorder reads and writes beyond LL/SC
1656 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1658 config WEAK_REORDERING_BEYOND_LLSC
1663 # These two indicate any level of the MIPS32 and MIPS64 architecture
1667 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1671 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1674 # These two indicate the revision of the architecture, either Release 1 or Release 2
1678 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1682 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1684 config SYS_SUPPORTS_32BIT_KERNEL
1686 config SYS_SUPPORTS_64BIT_KERNEL
1688 config CPU_SUPPORTS_32BIT_KERNEL
1690 config CPU_SUPPORTS_64BIT_KERNEL
1692 config CPU_SUPPORTS_CPUFREQ
1694 config CPU_SUPPORTS_ADDRWINCFG
1696 config CPU_SUPPORTS_HUGEPAGES
1698 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1700 config MIPS_PGD_C0_CONTEXT
1702 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1705 # Set to y for ptrace access to watch registers.
1707 config HARDWARE_WATCHPOINTS
1709 default y if CPU_MIPSR1 || CPU_MIPSR2
1714 prompt "Kernel code model"
1716 You should only select this option if you have a workload that
1717 actually benefits from 64-bit processing or if your machine has
1718 large memory. You will only be presented a single option in this
1719 menu if your system does not support both 32-bit and 64-bit kernels.
1722 bool "32-bit kernel"
1723 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1726 Select this option if you want to build a 32-bit kernel.
1728 bool "64-bit kernel"
1729 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1731 Select this option if you want to build a 64-bit kernel.
1736 bool "KVM Guest Kernel"
1738 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1740 config KVM_HOST_FREQ
1741 int "KVM Host Processor Frequency (MHz)"
1742 depends on KVM_GUEST
1745 Select this option if building a guest kernel for KVM to skip
1746 RTC emulation when determining guest CPU Frequency. Instead, the guest
1747 processor frequency is automatically derived from the host frequency.
1750 prompt "Kernel page size"
1751 default PAGE_SIZE_4KB
1753 config PAGE_SIZE_4KB
1755 depends on !CPU_LOONGSON2
1757 This option select the standard 4kB Linux page size. On some
1758 R3000-family processors this is the only available page size. Using
1759 4kB page size will minimize memory consumption and is therefore
1760 recommended for low memory systems.
1762 config PAGE_SIZE_8KB
1764 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1766 Using 8kB page size will result in higher performance kernel at
1767 the price of higher memory consumption. This option is available
1768 only on R8000 and cnMIPS processors. Note that you will need a
1769 suitable Linux distribution to support this.
1771 config PAGE_SIZE_16KB
1773 depends on !CPU_R3000 && !CPU_TX39XX
1775 Using 16kB page size will result in higher performance kernel at
1776 the price of higher memory consumption. This option is available on
1777 all non-R3000 family processors. Note that you will need a suitable
1778 Linux distribution to support this.
1780 config PAGE_SIZE_32KB
1782 depends on CPU_CAVIUM_OCTEON
1784 Using 32kB page size will result in higher performance kernel at
1785 the price of higher memory consumption. This option is available
1786 only on cnMIPS cores. Note that you will need a suitable Linux
1787 distribution to support this.
1789 config PAGE_SIZE_64KB
1791 depends on !CPU_R3000 && !CPU_TX39XX
1793 Using 64kB page size will result in higher performance kernel at
1794 the price of higher memory consumption. This option is available on
1795 all non-R3000 family processor. Not that at the time of this
1796 writing this option is still high experimental.
1800 config FORCE_MAX_ZONEORDER
1801 int "Maximum zone order"
1802 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1803 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1804 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1805 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1806 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1807 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1811 The kernel memory allocator divides physically contiguous memory
1812 blocks into "zones", where each zone is a power of two number of
1813 pages. This option selects the largest power of two that the kernel
1814 keeps in the memory allocator. If you need to allocate very large
1815 blocks of physically contiguous memory, then you may need to
1816 increase this value.
1818 This config option is actually maximum order plus one. For example,
1819 a value of 11 means that the largest free memory block is 2^10 pages.
1821 The page size is not necessarily 4KB. Keep this in mind
1822 when choosing a value for this option.
1825 bool "Use GIC global counter for clock events"
1826 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1828 Use the GIC global counter for the clock events. The R4K clock
1829 event driver is always present, so if the platform ends up not
1830 detecting a GIC, it will fall back to the R4K timer for the
1831 generation of clock events.
1836 config IP22_CPU_SCACHE
1841 # Support for a MIPS32 / MIPS64 style S-caches
1843 config MIPS_CPU_SCACHE
1847 config R5000_CPU_SCACHE
1851 config RM7000_CPU_SCACHE
1855 config SIBYTE_DMA_PAGEOPS
1856 bool "Use DMA to clear/copy pages"
1859 Instead of using the CPU to zero and copy pages, use a Data Mover
1860 channel. These DMA channels are otherwise unused by the standard
1861 SiByte Linux port. Seems to give a small performance benefit.
1863 config CPU_HAS_PREFETCH
1866 config CPU_GENERIC_DUMP_TLB
1868 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1872 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1874 config CPU_R4K_CACHE_TLB
1876 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1879 prompt "MIPS MT options"
1881 config MIPS_MT_DISABLED
1882 bool "Disable multithreading support."
1884 Use this option if your workload can't take advantage of
1885 MIPS hardware multithreading support. On systems that don't have
1886 the option of an MT-enabled processor this option will be the only
1887 option in this menu.
1890 bool "Use 1 TC on each available VPE for SMP"
1891 depends on SYS_SUPPORTS_MULTITHREADING
1892 select CPU_MIPSR2_IRQ_VI
1893 select CPU_MIPSR2_IRQ_EI
1895 select NR_CPUS_DEFAULT_2
1897 select SYS_SUPPORTS_SCHED_SMT if SMP
1898 select SYS_SUPPORTS_SMP
1900 select MIPS_PERF_SHARED_TC_COUNTERS
1902 This is a kernel model which is known a VSMP but lately has been
1903 marketesed into SMVP.
1904 Virtual SMP uses the processor's VPEs to implement virtual
1905 processors. In currently available configuration of the 34K processor
1906 this allows for a dual processor. Both processors will share the same
1907 primary caches; each will obtain the half of the TLB for it's own
1908 exclusive use. For a layman this model can be described as similar to
1909 what Intel calls Hyperthreading.
1911 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1914 bool "SMTC: Use all TCs on all VPEs for SMP"
1915 depends on CPU_MIPS32_R2
1916 #depends on CPU_MIPS64_R2 # once there is hardware ...
1917 depends on SYS_SUPPORTS_MULTITHREADING
1918 select CPU_MIPSR2_IRQ_VI
1919 select CPU_MIPSR2_IRQ_EI
1921 select NR_CPUS_DEFAULT_8
1923 select SYS_SUPPORTS_SMP
1926 This is a kernel model which is known a SMTC or lately has been
1927 marketesed into SMVP.
1928 is presenting the available TC's of the core as processors to Linux.
1929 On currently available 34K processors this means a Linux system will
1930 see up to 5 processors. The implementation of the SMTC kernel differs
1931 significantly from VSMP and cannot efficiently coexist in the same
1932 kernel binary so the choice between VSMP and SMTC is a compile time
1935 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1943 bool "SMT (multithreading) scheduler support"
1944 depends on SYS_SUPPORTS_SCHED_SMT
1947 SMT scheduler support improves the CPU scheduler's decision making
1948 when dealing with MIPS MT enabled cores at a cost of slightly
1949 increased overhead in some places. If unsure say N here.
1951 config SYS_SUPPORTS_SCHED_SMT
1954 config SYS_SUPPORTS_MULTITHREADING
1957 config MIPS_MT_FPAFF
1958 bool "Dynamic FPU affinity for FP-intensive threads"
1960 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1962 config MIPS_VPE_LOADER
1963 bool "VPE loader support."
1964 depends on SYS_SUPPORTS_MULTITHREADING
1965 select CPU_MIPSR2_IRQ_VI
1966 select CPU_MIPSR2_IRQ_EI
1969 Includes a loader for loading an elf relocatable object
1970 onto another VPE and running it.
1972 config MIPS_MT_SMTC_IM_BACKSTOP
1973 bool "Use per-TC register bits as backstop for inhibited IM bits"
1974 depends on MIPS_MT_SMTC
1977 To support multiple TC microthreads acting as "CPUs" within
1978 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1979 during interrupt handling. To support legacy drivers and interrupt
1980 controller management code, SMTC has a "backstop" to track and
1981 if necessary restore the interrupt mask. This has some performance
1982 impact on interrupt service overhead.
1984 config MIPS_MT_SMTC_IRQAFF
1985 bool "Support IRQ affinity API"
1986 depends on MIPS_MT_SMTC
1989 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1990 for SMTC Linux kernel. Requires platform support, of which
1991 an example can be found in the MIPS kernel i8259 and Malta
1992 platform code. Adds some overhead to interrupt dispatch, and
1993 should be used only if you know what you are doing.
1995 config MIPS_VPE_LOADER_TOM
1996 bool "Load VPE program into memory hidden from linux"
1997 depends on MIPS_VPE_LOADER
2000 The loader can use memory that is present but has been hidden from
2001 Linux using the kernel command line option "mem=xxMB". It's up to
2002 you to ensure the amount you put in the option and the space your
2003 program requires is less or equal to the amount physically present.
2005 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2006 config MIPS_VPE_APSP_API
2007 bool "Enable support for AP/SP API (RTLX)"
2008 depends on MIPS_VPE_LOADER
2012 bool "MIPS CMP framework support"
2013 depends on SYS_SUPPORTS_MIPS_CMP
2015 select SYS_SUPPORTS_SMP
2016 select SYS_SUPPORTS_SCHED_SMT if SMP
2017 select WEAK_ORDERING
2020 This is a placeholder option for the GCMP work. It will need to
2021 be handled differently...
2023 config SB1_PASS_1_WORKAROUNDS
2025 depends on CPU_SB1_PASS_1
2028 config SB1_PASS_2_WORKAROUNDS
2030 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2033 config SB1_PASS_2_1_WORKAROUNDS
2035 depends on CPU_SB1 && CPU_SB1_PASS_2
2039 config 64BIT_PHYS_ADDR
2042 config ARCH_PHYS_ADDR_T_64BIT
2043 def_bool 64BIT_PHYS_ADDR
2045 config CPU_HAS_SMARTMIPS
2046 depends on SYS_SUPPORTS_SMARTMIPS
2047 bool "Support for the SmartMIPS ASE"
2049 SmartMIPS is a extension of the MIPS32 architecture aimed at
2050 increased security at both hardware and software level for
2051 smartcards. Enabling this option will allow proper use of the
2052 SmartMIPS instructions by Linux applications. However a kernel with
2053 this option will not work on a MIPS core without SmartMIPS core. If
2054 you don't know you probably don't have SmartMIPS and should say N
2057 config CPU_MICROMIPS
2058 depends on SYS_SUPPORTS_MICROMIPS
2059 bool "Build kernel using microMIPS ISA"
2061 When this option is enabled the kernel will be built using the
2071 # Vectored interrupt mode is an R2 feature
2073 config CPU_MIPSR2_IRQ_VI
2077 # Extended interrupt mode is an R2 feature
2079 config CPU_MIPSR2_IRQ_EI
2084 depends on !CPU_R3000
2090 config CPU_DADDI_WORKAROUNDS
2093 config CPU_R4000_WORKAROUNDS
2095 select CPU_R4400_WORKAROUNDS
2097 config CPU_R4400_WORKAROUNDS
2101 # - Highmem only makes sense for the 32-bit kernel.
2102 # - The current highmem code will only work properly on physically indexed
2103 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2104 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2105 # moment we protect the user and offer the highmem option only on machines
2106 # where it's known to be safe. This will not offer highmem on a few systems
2107 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2108 # indexed CPUs but we're playing safe.
2109 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2110 # know they might have memory configurations that could make use of highmem
2114 bool "High Memory Support"
2115 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2117 config CPU_SUPPORTS_HIGHMEM
2120 config SYS_SUPPORTS_HIGHMEM
2123 config SYS_SUPPORTS_SMARTMIPS
2126 config SYS_SUPPORTS_MICROMIPS
2129 config ARCH_FLATMEM_ENABLE
2131 depends on !NUMA && !CPU_LOONGSON2
2133 config ARCH_DISCONTIGMEM_ENABLE
2135 default y if SGI_IP27
2137 Say Y to support efficient handling of discontiguous physical memory,
2138 for architectures which are either NUMA (Non-Uniform Memory Access)
2139 or have huge holes in the physical address space for other reasons.
2140 See <file:Documentation/vm/numa> for more.
2142 config ARCH_SPARSEMEM_ENABLE
2144 select SPARSEMEM_STATIC
2148 depends on SYS_SUPPORTS_NUMA
2150 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2151 Access). This option improves performance on systems with more
2152 than two nodes; on two node systems it is generally better to
2153 leave it disabled; on single node systems disable this option
2156 config SYS_SUPPORTS_NUMA
2162 depends on NEED_MULTIPLE_NODES
2164 config HW_PERF_EVENTS
2165 bool "Enable hardware performance counter support for perf events"
2166 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2169 Enable hardware performance counter support for perf events. If
2170 disabled, perf events will use software events only.
2175 bool "Multi-Processing support"
2176 depends on SYS_SUPPORTS_SMP
2177 select USE_GENERIC_SMP_HELPERS
2179 This enables support for systems with more than one CPU. If you have
2180 a system with only one CPU, like most personal computers, say N. If
2181 you have a system with more than one CPU, say Y.
2183 If you say N here, the kernel will run on single and multiprocessor
2184 machines, but will use only one CPU of a multiprocessor machine. If
2185 you say Y here, the kernel will run on many, but not all,
2186 singleprocessor machines. On a singleprocessor machine, the kernel
2187 will run faster if you say N here.
2189 People using multiprocessor machines who say Y here should also say
2190 Y to "Enhanced Real Time Clock Support", below.
2192 See also the SMP-HOWTO available at
2193 <http://www.tldp.org/docs.html#howto>.
2195 If you don't know what to do here, say N.
2200 config SYS_SUPPORTS_MIPS_CMP
2203 config SYS_SUPPORTS_SMP
2206 config NR_CPUS_DEFAULT_1
2209 config NR_CPUS_DEFAULT_2
2212 config NR_CPUS_DEFAULT_4
2215 config NR_CPUS_DEFAULT_8
2218 config NR_CPUS_DEFAULT_16
2221 config NR_CPUS_DEFAULT_32
2224 config NR_CPUS_DEFAULT_64
2228 int "Maximum number of CPUs (2-64)"
2229 range 1 64 if NR_CPUS_DEFAULT_1
2231 default "1" if NR_CPUS_DEFAULT_1
2232 default "2" if NR_CPUS_DEFAULT_2
2233 default "4" if NR_CPUS_DEFAULT_4
2234 default "8" if NR_CPUS_DEFAULT_8
2235 default "16" if NR_CPUS_DEFAULT_16
2236 default "32" if NR_CPUS_DEFAULT_32
2237 default "64" if NR_CPUS_DEFAULT_64
2239 This allows you to specify the maximum number of CPUs which this
2240 kernel will support. The maximum supported value is 32 for 32-bit
2241 kernel and 64 for 64-bit kernels; the minimum value which makes
2242 sense is 1 for Qemu (useful only for kernel debugging purposes)
2243 and 2 for all others.
2245 This is purely to save memory - each supported CPU adds
2246 approximately eight kilobytes to the kernel image. For best
2247 performance should round up your number of processors to the next
2250 config MIPS_PERF_SHARED_TC_COUNTERS
2254 # Timer Interrupt Frequency Configuration
2258 prompt "Timer frequency"
2261 Allows the configuration of the timer frequency.
2264 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2267 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2270 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2273 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2276 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2279 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2282 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2286 config SYS_SUPPORTS_48HZ
2289 config SYS_SUPPORTS_100HZ
2292 config SYS_SUPPORTS_128HZ
2295 config SYS_SUPPORTS_250HZ
2298 config SYS_SUPPORTS_256HZ
2301 config SYS_SUPPORTS_1000HZ
2304 config SYS_SUPPORTS_1024HZ
2307 config SYS_SUPPORTS_ARBIT_HZ
2309 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2310 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2311 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2312 !SYS_SUPPORTS_1024HZ
2317 default 100 if HZ_100
2318 default 128 if HZ_128
2319 default 250 if HZ_250
2320 default 256 if HZ_256
2321 default 1000 if HZ_1000
2322 default 1024 if HZ_1024
2324 source "kernel/Kconfig.preempt"
2327 bool "Kexec system call"
2329 kexec is a system call that implements the ability to shutdown your
2330 current kernel, and to start another kernel. It is like a reboot
2331 but it is independent of the system firmware. And like a reboot
2332 you can start any kernel with it, not just Linux.
2334 The name comes from the similarity to the exec system call.
2336 It is an ongoing process to be certain the hardware in a machine
2337 is properly shutdown, so do not be surprised if this code does not
2338 initially work for you. It may help to enable device hotplugging
2339 support. As of this writing the exact hardware interface is
2340 strongly in flux, so no good recommendation can be made.
2343 bool "Kernel crash dumps"
2345 Generate crash dump after being started by kexec.
2346 This should be normally only set in special crash dump kernels
2347 which are loaded in the main kernel with kexec-tools into
2348 a specially reserved region and then later executed after
2349 a crash by kdump/kexec. The crash dump kernel must be compiled
2350 to a memory address not used by the main kernel or firmware using
2353 config PHYSICAL_START
2354 hex "Physical address where the kernel is loaded"
2355 default "0xffffffff84000000" if 64BIT
2356 default "0x84000000" if 32BIT
2357 depends on CRASH_DUMP
2359 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2360 If you plan to use kernel for capturing the crash dump change
2361 this value to start of the reserved region (the "X" value as
2362 specified in the "crashkernel=YM@XM" command line boot parameter
2363 passed to the panic-ed kernel).
2366 bool "Enable seccomp to safely compute untrusted bytecode"
2370 This kernel feature is useful for number crunching applications
2371 that may need to compute untrusted bytecode during their
2372 execution. By using pipes or other transports made available to
2373 the process as file descriptors supporting the read/write
2374 syscalls, it's possible to isolate those applications in
2375 their own address space using seccomp. Once seccomp is
2376 enabled via /proc/<pid>/seccomp, it cannot be disabled
2377 and the task is only allowed to execute a few safe syscalls
2378 defined by each seccomp mode.
2380 If unsure, say Y. Only embedded should say N here.
2385 select OF_EARLY_FLATTREE
2390 config LOCKDEP_SUPPORT
2394 config STACKTRACE_SUPPORT
2398 source "init/Kconfig"
2400 source "kernel/Kconfig.freezer"
2402 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2410 bool "Support for PCI controller"
2411 depends on HW_HAS_PCI
2413 select GENERIC_PCI_IOMAP
2414 select NO_GENERIC_PCI_IOPORT_MAP
2416 Find out whether you have a PCI motherboard. PCI is the name of a
2417 bus system, i.e. the way the CPU talks to the other stuff inside
2418 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2424 source "drivers/pci/Kconfig"
2426 source "drivers/pci/pcie/Kconfig"
2429 # ISA support is now enabled via select. Too many systems still have the one
2430 # or other ISA chip on the board that users don't know about so don't expect
2431 # users to choose the right thing ...
2438 depends on HW_HAS_EISA
2440 select GENERIC_ISA_DMA
2442 The Extended Industry Standard Architecture (EISA) bus was
2443 developed as an open alternative to the IBM MicroChannel bus.
2445 The EISA bus provided some of the features of the IBM MicroChannel
2446 bus while maintaining backward compatibility with cards made for
2447 the older ISA bus. The EISA bus saw limited use between 1988 and
2448 1995 when it was made obsolete by the PCI bus.
2450 Say Y here if you are building a kernel for an EISA-based machine.
2454 source "drivers/eisa/Kconfig"
2457 bool "TURBOchannel support"
2458 depends on MACH_DECSTATION
2460 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2461 processors. TURBOchannel programming specifications are available
2463 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2465 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2466 Linux driver support status is documented at:
2467 <http://www.linux-mips.org/wiki/DECstation>
2477 select MIPS_EXTERNAL_TIMER
2482 source "drivers/pcmcia/Kconfig"
2484 source "drivers/pci/hotplug/Kconfig"
2487 bool "RapidIO support"
2491 If you say Y here, the kernel will include drivers and
2492 infrastructure code to support RapidIO interconnect devices.
2494 source "drivers/rapidio/Kconfig"
2498 menu "Executable file formats"
2500 source "fs/Kconfig.binfmt"
2505 config MIPS32_COMPAT
2506 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2509 Select this option if you want Linux/MIPS 32-bit binary
2510 compatibility. Since all software available for Linux/MIPS is
2511 currently 32-bit you should say Y here.
2515 depends on MIPS32_COMPAT
2516 select ARCH_WANT_OLD_COMPAT_IPC
2519 config SYSVIPC_COMPAT
2521 depends on COMPAT && SYSVIPC
2525 bool "Kernel support for o32 binaries"
2526 depends on MIPS32_COMPAT
2528 Select this option if you want to run o32 binaries. These are pure
2529 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2530 existing binaries are in this format.
2535 bool "Kernel support for n32 binaries"
2536 depends on MIPS32_COMPAT
2538 Select this option if you want to run n32 binaries. These are
2539 64-bit binaries using 32-bit quantities for addressing and certain
2540 data that would normally be 64-bit. They are used in special
2547 default y if MIPS32_O32 || MIPS32_N32
2551 menu "Power management options"
2553 config ARCH_HIBERNATION_POSSIBLE
2555 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2557 config ARCH_SUSPEND_POSSIBLE
2559 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2561 source "kernel/power/Kconfig"
2565 config MIPS_EXTERNAL_TIMER
2568 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2569 menu "CPU Power Management"
2570 source "drivers/cpufreq/Kconfig"
2574 source "net/Kconfig"
2576 source "drivers/Kconfig"
2578 source "drivers/firmware/Kconfig"
2582 source "arch/mips/Kconfig.debug"
2584 source "security/Kconfig"
2586 source "crypto/Kconfig"
2588 source "lib/Kconfig"
2590 source "arch/mips/kvm/Kconfig"