4 select HAVE_CONTEXT_TRACKING
5 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select HAVE_DEBUG_KMEMLEAK
21 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
22 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
23 select RTC_LIB if !MACH_LOONGSON
24 select GENERIC_ATOMIC64 if !64BIT
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
27 select HAVE_DMA_API_DEBUG
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select GENERIC_PCI_IOMAP
31 select HAVE_ARCH_JUMP_LABEL
32 select ARCH_WANT_IPC_PARSE_VERSION
33 select IRQ_FORCED_THREADING
35 select HAVE_MEMBLOCK_NODE_MAP
36 select ARCH_DISCARD_MEMBLOCK
37 select GENERIC_SMP_IDLE_THREAD
38 select BUILDTIME_EXTABLE_SORT
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_CMOS_UPDATE
41 select HAVE_MOD_ARCH_SPECIFIC
43 select MODULES_USE_ELF_REL if MODULES
44 select MODULES_USE_ELF_RELA if MODULES && 64BIT
45 select CLONE_BACKWARDS
46 select HAVE_DEBUG_STACKOVERFLOW
48 menu "Machine selection"
55 bool "Alchemy processor based machines"
56 select 64BIT_PHYS_ADDR
60 select SYS_HAS_CPU_MIPS32_R1
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_APM_EMULATION
63 select ARCH_REQUIRE_GPIOLIB
64 select SYS_SUPPORTS_ZBOOT
65 select USB_ARCH_HAS_OHCI
66 select USB_ARCH_HAS_EHCI
69 bool "Texas Instruments AR7"
71 select DMA_NONCOHERENT
77 select SYS_HAS_CPU_MIPS32_R1
78 select SYS_HAS_EARLY_PRINTK
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_LITTLE_ENDIAN
81 select SYS_SUPPORTS_ZBOOT_UART16550
82 select ARCH_REQUIRE_GPIOLIB
86 Support for the Texas Instruments AR7 System-on-a-Chip
87 family: TNETD7100, 7200 and 7300.
90 bool "Atheros AR71XX/AR724X/AR913X based boards"
91 select ARCH_REQUIRE_GPIOLIB
95 select DMA_NONCOHERENT
100 select SYS_HAS_CPU_MIPS32_R2
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_BIG_ENDIAN
105 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
108 bool "Broadcom BCM47XX based boards"
109 select ARCH_WANT_OPTIONAL_GPIOLIB
113 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_MIPS32_R1
118 select NO_EXCEPT_FILL
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121 select SYS_HAS_EARLY_PRINTK
123 Support for BCM47XX based boards
126 bool "Broadcom BCM63XX based boards"
130 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_MIPS32_R1
133 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_BIG_ENDIAN
136 select SYS_HAS_EARLY_PRINTK
138 select ARCH_REQUIRE_GPIOLIB
141 Support for BCM63XX based boards
148 select DMA_NONCOHERENT
149 select EARLY_PRINTK_8250 if EARLY_PRINTK
155 select PCI_GT64XXX_PCI0
157 select SYS_HAS_CPU_NEVADA
158 select SYS_HAS_EARLY_PRINTK
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_64BIT_KERNEL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
163 config MACH_DECSTATION
170 select CPU_DADDI_WORKAROUNDS if 64BIT
171 select CPU_R4000_WORKAROUNDS if 64BIT
172 select CPU_R4400_WORKAROUNDS if 64BIT
173 select DMA_NONCOHERENT
176 select SYS_HAS_CPU_R3000
177 select SYS_HAS_CPU_R4X00
178 select SYS_SUPPORTS_32BIT_KERNEL
179 select SYS_SUPPORTS_64BIT_KERNEL
180 select SYS_SUPPORTS_LITTLE_ENDIAN
181 select SYS_SUPPORTS_128HZ
182 select SYS_SUPPORTS_256HZ
183 select SYS_SUPPORTS_1024HZ
185 This enables support for DEC's MIPS based workstations. For details
186 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
187 DECstation porting pages on <http://decstation.unix-ag.org/>.
189 If you have one of the following DECstation Models you definitely
190 want to choose R4xx0 for the CPU Type:
197 otherwise choose R3000.
200 bool "Jazz family of machines"
203 select ARCH_MAY_HAVE_PC_FDC
206 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
207 select GENERIC_ISA_DMA
208 select HAVE_PCSPKR_PLATFORM
213 select SYS_HAS_CPU_R4X00
214 select SYS_SUPPORTS_32BIT_KERNEL
215 select SYS_SUPPORTS_64BIT_KERNEL
216 select SYS_SUPPORTS_100HZ
218 This a family of machines based on the MIPS R4030 chipset which was
219 used by several vendors to build RISC/os and Windows NT workstations.
220 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
221 Olivetti M700-10 workstations.
224 bool "Ingenic JZ4740 based machines"
225 select SYS_HAS_CPU_MIPS32_R1
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_LITTLE_ENDIAN
228 select SYS_SUPPORTS_ZBOOT_UART16550
229 select DMA_NONCOHERENT
231 select ARCH_REQUIRE_GPIOLIB
232 select SYS_HAS_EARLY_PRINTK
235 select GENERIC_IRQ_CHIP
238 bool "Lantiq based platforms"
239 select DMA_NONCOHERENT
243 select SYS_HAS_CPU_MIPS32_R1
244 select SYS_HAS_CPU_MIPS32_R2
245 select SYS_SUPPORTS_BIG_ENDIAN
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_MULTITHREADING
248 select SYS_HAS_EARLY_PRINTK
249 select ARCH_REQUIRE_GPIOLIB
252 select HAVE_MACH_CLKDEV
256 select PINCTRL_LANTIQ
259 bool "LASAT Networks platforms"
262 select DMA_NONCOHERENT
263 select SYS_HAS_EARLY_PRINTK
266 select PCI_GT64XXX_PCI0
268 select R5000_CPU_SCACHE
269 select SYS_HAS_CPU_R5000
270 select SYS_SUPPORTS_32BIT_KERNEL
271 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
272 select SYS_SUPPORTS_LITTLE_ENDIAN
275 bool "Loongson family of machines"
276 select SYS_SUPPORTS_ZBOOT
278 This enables the support of Loongson family of machines.
280 Loongson is a family of general-purpose MIPS-compatible CPUs.
281 developed at Institute of Computing Technology (ICT),
282 Chinese Academy of Sciences (CAS) in the People's Republic
283 of China. The chief architect is Professor Weiwu Hu.
285 config MACH_LOONGSON1
286 bool "Loongson 1 family of machines"
287 select SYS_SUPPORTS_ZBOOT
289 This enables support for the Loongson 1 based machines.
291 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
292 the ICT (Institute of Computing Technology) and the Chinese Academy
296 bool "MIPS Malta board"
297 select ARCH_MAY_HAVE_PC_FDC
303 select DMA_NONCOHERENT
304 select GENERIC_ISA_DMA
305 select HAVE_PCSPKR_PLATFORM
312 select MIPS_CPU_SCACHE
313 select PCI_GT64XXX_PCI0
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_HAS_CPU_MIPS64_R1
319 select SYS_HAS_CPU_MIPS64_R2
320 select SYS_HAS_CPU_NEVADA
321 select SYS_HAS_CPU_RM7000
322 select SYS_HAS_EARLY_PRINTK
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_64BIT_KERNEL
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_LITTLE_ENDIAN
327 select SYS_SUPPORTS_MIPS_CMP
328 select SYS_SUPPORTS_MULTITHREADING
329 select SYS_SUPPORTS_SMARTMIPS
330 select SYS_SUPPORTS_ZBOOT
332 This enables support for the MIPS Technologies Malta evaluation
336 bool "MIPS SEAD3 board"
342 select CPU_MIPSR2_IRQ_VI
343 select CPU_MIPSR2_IRQ_EI
344 select DMA_NONCOHERENT
348 select SYS_HAS_CPU_MIPS32_R1
349 select SYS_HAS_CPU_MIPS32_R2
350 select SYS_HAS_CPU_MIPS64_R1
351 select SYS_HAS_EARLY_PRINTK
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL
354 select SYS_SUPPORTS_BIG_ENDIAN
355 select SYS_SUPPORTS_LITTLE_ENDIAN
356 select SYS_SUPPORTS_SMARTMIPS
357 select SYS_SUPPORTS_MICROMIPS
358 select USB_ARCH_HAS_EHCI
359 select USB_EHCI_BIG_ENDIAN_DESC
360 select USB_EHCI_BIG_ENDIAN_MMIO
363 This enables support for the MIPS Technologies SEAD3 evaluation
367 bool "NEC EMMA2RH Mark-eins board"
371 This enables support for the NEC Electronics Mark-eins boards.
374 bool "NEC VR4100 series based machines"
377 select SYS_HAS_CPU_VR41XX
378 select ARCH_REQUIRE_GPIOLIB
381 bool "NXP STB220 board"
384 Support for NXP Semiconductors STB220 Development Board.
391 Support for NXP Semiconductors STB225 Development Board.
394 bool "PMC-Sierra MSP chipsets"
397 select DMA_NONCOHERENT
399 select NO_EXCEPT_FILL
401 select SYS_HAS_CPU_MIPS32_R1
402 select SYS_HAS_CPU_MIPS32_R2
403 select SYS_SUPPORTS_32BIT_KERNEL
404 select SYS_SUPPORTS_BIG_ENDIAN
407 select SERIAL_8250_CONSOLE
408 select USB_EHCI_BIG_ENDIAN_MMIO
409 select USB_EHCI_BIG_ENDIAN_DESC
411 This adds support for the PMC-Sierra family of Multi-Service
412 Processor System-On-A-Chips. These parts include a number
413 of integrated peripherals, interfaces and DSPs in addition to
414 a variety of MIPS cores.
420 select CPU_MIPSR2_IRQ_VI
421 select CPU_MIPSR2_IRQ_EI
423 select DMA_NONCOHERENT
425 select SYS_HAS_CPU_MIPS32_R2
426 select SYS_SUPPORTS_32BIT_KERNEL
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_HIGHMEM
429 select USB_OHCI_LITTLE_ENDIAN
431 This enables support for the Cisco PowerTV Platform.
434 bool "Ralink based machines"
438 select DMA_NONCOHERENT
441 select SYS_HAS_CPU_MIPS32_R1
442 select SYS_HAS_CPU_MIPS32_R2
443 select SYS_SUPPORTS_32BIT_KERNEL
444 select SYS_SUPPORTS_LITTLE_ENDIAN
445 select SYS_HAS_EARLY_PRINTK
446 select HAVE_MACH_CLKDEV
448 select ARCH_HAS_RESET_CONTROLLER
449 select RESET_CONTROLLER
452 bool "SGI IP22 (Indy/Indigo2)"
458 select DEFAULT_SGI_PARTITION
459 select DMA_NONCOHERENT
463 select IP22_CPU_SCACHE
465 select GENERIC_ISA_DMA_SUPPORT_BROKEN
467 select SGI_HAS_INDYDOG
473 select SYS_HAS_CPU_R4X00
474 select SYS_HAS_CPU_R5000
476 # Disable EARLY_PRINTK for now since it leads to overwritten prom
477 # memory during early boot on some machines.
479 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
480 # for a more details discussion
482 # select SYS_HAS_EARLY_PRINTK
483 select SYS_SUPPORTS_32BIT_KERNEL
484 select SYS_SUPPORTS_64BIT_KERNEL
485 select SYS_SUPPORTS_BIG_ENDIAN
487 This are the SGI Indy, Challenge S and Indigo2, as well as certain
488 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
489 that runs on these, say Y here.
492 bool "SGI IP27 (Origin200/2000)"
496 select DEFAULT_SGI_PARTITION
498 select SYS_HAS_EARLY_PRINTK
500 select NR_CPUS_DEFAULT_64
501 select SYS_HAS_CPU_R10000
502 select SYS_SUPPORTS_64BIT_KERNEL
503 select SYS_SUPPORTS_BIG_ENDIAN
504 select SYS_SUPPORTS_NUMA
505 select SYS_SUPPORTS_SMP
507 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
508 workstations. To compile a Linux kernel that runs on these, say Y
512 bool "SGI IP28 (Indigo2 R10k)"
518 select DEFAULT_SGI_PARTITION
519 select DMA_NONCOHERENT
520 select GENERIC_ISA_DMA_SUPPORT_BROKEN
526 select SGI_HAS_INDYDOG
532 select SYS_HAS_CPU_R10000
534 # Disable EARLY_PRINTK for now since it leads to overwritten prom
535 # memory during early boot on some machines.
537 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
538 # for a more details discussion
540 # select SYS_HAS_EARLY_PRINTK
541 select SYS_SUPPORTS_64BIT_KERNEL
542 select SYS_SUPPORTS_BIG_ENDIAN
544 This is the SGI Indigo2 with R10000 processor. To compile a Linux
545 kernel that runs on these, say Y here.
554 select DMA_NONCOHERENT
557 select R5000_CPU_SCACHE
558 select RM7000_CPU_SCACHE
559 select SYS_HAS_CPU_R5000
560 select SYS_HAS_CPU_R10000 if BROKEN
561 select SYS_HAS_CPU_RM7000
562 select SYS_HAS_CPU_NEVADA
563 select SYS_SUPPORTS_64BIT_KERNEL
564 select SYS_SUPPORTS_BIG_ENDIAN
566 If you want this kernel to run on SGI O2 workstation, say Y here.
569 bool "Sibyte BCM91120C-CRhine"
572 select SIBYTE_BCM1120
574 select SYS_HAS_CPU_SB1
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select SYS_SUPPORTS_LITTLE_ENDIAN
579 bool "Sibyte BCM91120x-Carmel"
582 select SIBYTE_BCM1120
584 select SYS_HAS_CPU_SB1
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_LITTLE_ENDIAN
589 bool "Sibyte BCM91125C-CRhone"
592 select SIBYTE_BCM1125
594 select SYS_HAS_CPU_SB1
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_HIGHMEM
597 select SYS_SUPPORTS_LITTLE_ENDIAN
600 bool "Sibyte BCM91125E-Rhone"
603 select SIBYTE_BCM1125H
605 select SYS_HAS_CPU_SB1
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select SYS_SUPPORTS_LITTLE_ENDIAN
610 bool "Sibyte BCM91250A-SWARM"
613 select HAVE_PATA_PLATFORM
616 select SYS_HAS_CPU_SB1
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_HIGHMEM
619 select SYS_SUPPORTS_LITTLE_ENDIAN
620 select ZONE_DMA32 if 64BIT
622 config SIBYTE_LITTLESUR
623 bool "Sibyte BCM91250C2-LittleSur"
626 select HAVE_PATA_PLATFORM
629 select SYS_HAS_CPU_SB1
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select SYS_SUPPORTS_HIGHMEM
632 select SYS_SUPPORTS_LITTLE_ENDIAN
634 config SIBYTE_SENTOSA
635 bool "Sibyte BCM91250E-Sentosa"
640 select SYS_HAS_CPU_SB1
641 select SYS_SUPPORTS_BIG_ENDIAN
642 select SYS_SUPPORTS_LITTLE_ENDIAN
645 bool "Sibyte BCM91480B-BigSur"
648 select NR_CPUS_DEFAULT_4
649 select SIBYTE_BCM1x80
651 select SYS_HAS_CPU_SB1
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_HIGHMEM
654 select SYS_SUPPORTS_LITTLE_ENDIAN
655 select ZONE_DMA32 if 64BIT
658 bool "SNI RM200/300/400"
659 select FW_ARC if CPU_LITTLE_ENDIAN
660 select FW_ARC32 if CPU_LITTLE_ENDIAN
661 select FW_SNIPROM if CPU_BIG_ENDIAN
662 select ARCH_MAY_HAVE_PC_FDC
666 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
667 select DMA_NONCOHERENT
668 select GENERIC_ISA_DMA
669 select HAVE_PCSPKR_PLATFORM
676 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
677 select SYS_HAS_CPU_R4X00
678 select SYS_HAS_CPU_R5000
679 select SYS_HAS_CPU_R10000
680 select R5000_CPU_SCACHE
681 select SYS_HAS_EARLY_PRINTK
682 select SYS_SUPPORTS_32BIT_KERNEL
683 select SYS_SUPPORTS_64BIT_KERNEL
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_HIGHMEM
686 select SYS_SUPPORTS_LITTLE_ENDIAN
688 The SNI RM200/300/400 are MIPS-based machines manufactured by
689 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
690 Technology and now in turn merged with Fujitsu. Say Y here to
691 support this machine type.
694 bool "Toshiba TX39 series based machines"
697 bool "Toshiba TX49 series based machines"
699 config MIKROTIK_RB532
700 bool "Mikrotik RB532 boards"
703 select DMA_NONCOHERENT
706 select SYS_HAS_CPU_MIPS32_R1
707 select SYS_SUPPORTS_32BIT_KERNEL
708 select SYS_SUPPORTS_LITTLE_ENDIAN
711 select ARCH_REQUIRE_GPIOLIB
713 Support the Mikrotik(tm) RouterBoard 532 series,
714 based on the IDT RC32434 SoC.
716 config CAVIUM_OCTEON_SOC
717 bool "Cavium Networks Octeon SoC based boards"
719 select 64BIT_PHYS_ADDR
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_HOTPLUG_CPU
725 select SYS_HAS_EARLY_PRINTK
726 select SYS_HAS_CPU_CAVIUM_OCTEON
730 select USB_ARCH_HAS_OHCI
731 select USB_ARCH_HAS_EHCI
733 select ARCH_REQUIRE_GPIOLIB
735 This option supports all of the Octeon reference boards from Cavium
736 Networks. It builds a kernel that dynamically determines the Octeon
737 CPU type and supports all known board reference implementations.
738 Some of the supported boards are:
745 Say Y here for most Octeon reference boards.
748 bool "Netlogic XLR/XLS based systems"
751 select SYS_HAS_CPU_XLR
752 select SYS_SUPPORTS_SMP
755 select SYS_SUPPORTS_32BIT_KERNEL
756 select SYS_SUPPORTS_64BIT_KERNEL
757 select 64BIT_PHYS_ADDR
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_HIGHMEM
761 select NR_CPUS_DEFAULT_32
765 select ZONE_DMA32 if 64BIT
767 select SYS_HAS_EARLY_PRINTK
768 select USB_ARCH_HAS_OHCI if USB_SUPPORT
769 select USB_ARCH_HAS_EHCI if USB_SUPPORT
770 select SYS_SUPPORTS_ZBOOT
771 select SYS_SUPPORTS_ZBOOT_UART16550
773 Support for systems based on Netlogic XLR and XLS processors.
774 Say Y here if you have a XLR or XLS based board.
777 bool "Netlogic XLP based systems"
780 select SYS_HAS_CPU_XLP
781 select SYS_SUPPORTS_SMP
783 select SYS_SUPPORTS_32BIT_KERNEL
784 select SYS_SUPPORTS_64BIT_KERNEL
785 select 64BIT_PHYS_ADDR
786 select SYS_SUPPORTS_BIG_ENDIAN
787 select SYS_SUPPORTS_LITTLE_ENDIAN
788 select SYS_SUPPORTS_HIGHMEM
790 select NR_CPUS_DEFAULT_32
794 select ZONE_DMA32 if 64BIT
796 select SYS_HAS_EARLY_PRINTK
798 select SYS_SUPPORTS_ZBOOT
799 select SYS_SUPPORTS_ZBOOT_UART16550
801 This board is based on Netlogic XLP Processor.
802 Say Y here if you have a XLP based board.
806 source "arch/mips/alchemy/Kconfig"
807 source "arch/mips/ath79/Kconfig"
808 source "arch/mips/bcm47xx/Kconfig"
809 source "arch/mips/bcm63xx/Kconfig"
810 source "arch/mips/jazz/Kconfig"
811 source "arch/mips/jz4740/Kconfig"
812 source "arch/mips/lantiq/Kconfig"
813 source "arch/mips/lasat/Kconfig"
814 source "arch/mips/pmcs-msp71xx/Kconfig"
815 source "arch/mips/powertv/Kconfig"
816 source "arch/mips/ralink/Kconfig"
817 source "arch/mips/sgi-ip27/Kconfig"
818 source "arch/mips/sibyte/Kconfig"
819 source "arch/mips/txx9/Kconfig"
820 source "arch/mips/vr41xx/Kconfig"
821 source "arch/mips/cavium-octeon/Kconfig"
822 source "arch/mips/loongson/Kconfig"
823 source "arch/mips/loongson1/Kconfig"
824 source "arch/mips/netlogic/Kconfig"
828 config RWSEM_GENERIC_SPINLOCK
832 config RWSEM_XCHGADD_ALGORITHM
835 config ARCH_HAS_ILOG2_U32
839 config ARCH_HAS_ILOG2_U64
843 config GENERIC_HWEIGHT
847 config GENERIC_CALIBRATE_DELAY
851 config SCHED_OMIT_FRAME_POINTER
856 # Select some configuration options automatically based on user selections.
861 config ARCH_MAY_HAVE_PC_FDC
907 select ARCH_REQUIRE_GPIOLIB
913 config ARCH_DMA_ADDR_T_64BIT
914 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
919 config DMA_NONCOHERENT
921 select NEED_DMA_MAP_STATE
923 config NEED_DMA_MAP_STATE
926 config SYS_HAS_EARLY_PRINTK
930 bool "Support for hot-pluggable CPUs"
931 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
933 Say Y here to allow turning CPUs off and on. CPUs can be
934 controlled through /sys/devices/system/cpu.
935 (Note: power management support will enable this option
936 automatically on SMP systems. )
937 Say N if you want to disable CPU hotplug.
939 config SYS_SUPPORTS_HOTPLUG_CPU
963 config GENERIC_ISA_DMA
965 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
968 config GENERIC_ISA_DMA_SUPPORT_BROKEN
970 select GENERIC_ISA_DMA
979 # Endianness selection. Sufficiently obscure so many users don't know what to
980 # answer,so we try hard to limit the available choices. Also the use of a
981 # choice statement should be more obvious to the user.
984 prompt "Endianness selection"
986 Some MIPS machines can be configured for either little or big endian
987 byte order. These modes require different kernels and a different
988 Linux distribution. In general there is one preferred byteorder for a
989 particular system but some systems are just as commonly used in the
990 one or the other endianness.
992 config CPU_BIG_ENDIAN
994 depends on SYS_SUPPORTS_BIG_ENDIAN
996 config CPU_LITTLE_ENDIAN
998 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1005 config SYS_SUPPORTS_APM_EMULATION
1008 config SYS_SUPPORTS_BIG_ENDIAN
1011 config SYS_SUPPORTS_LITTLE_ENDIAN
1014 config SYS_SUPPORTS_HUGETLBFS
1016 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1019 config MIPS_HUGE_TLB_SUPPORT
1020 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1043 config PCI_GT64XXX_PCI0
1046 config NO_EXCEPT_FILL
1053 select DMA_NONCOHERENT
1055 select SWAP_IO_SPACE
1056 select SYS_HAS_CPU_R5500
1057 select SYS_SUPPORTS_32BIT_KERNEL
1058 select SYS_SUPPORTS_64BIT_KERNEL
1059 select SYS_SUPPORTS_BIG_ENDIAN
1066 select DMA_NONCOHERENT
1067 select SYS_HAS_CPU_MIPS32_R2
1068 select SYS_SUPPORTS_32BIT_KERNEL
1069 select SYS_SUPPORTS_LITTLE_ENDIAN
1070 select SYS_SUPPORTS_BIG_ENDIAN
1071 select CPU_MIPSR2_IRQ_VI
1077 config SWAP_IO_SPACE
1080 config SGI_HAS_INDYDOG
1092 config SGI_HAS_ZILOG
1095 config SGI_HAS_I8042
1098 config DEFAULT_SGI_PARTITION
1110 config MIPS_L1_CACHE_SHIFT
1112 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1113 default "6" if MIPS_CPU_SCACHE
1114 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1117 config HAVE_STD_PC_SERIAL_PORT
1121 bool "ARC console support"
1122 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1126 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1131 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1140 menu "CPU selection"
1146 config CPU_LOONGSON2E
1148 depends on SYS_HAS_CPU_LOONGSON2E
1149 select CPU_LOONGSON2
1151 The Loongson 2E processor implements the MIPS III instruction set
1152 with many extensions.
1154 It has an internal FPGA northbridge, which is compatible to
1157 config CPU_LOONGSON2F
1159 depends on SYS_HAS_CPU_LOONGSON2F
1160 select CPU_LOONGSON2
1161 select ARCH_REQUIRE_GPIOLIB
1163 The Loongson 2F processor implements the MIPS III instruction set
1164 with many extensions.
1166 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1167 have a similar programming interface with FPGA northbridge used in
1170 config CPU_LOONGSON1B
1172 depends on SYS_HAS_CPU_LOONGSON1B
1173 select CPU_LOONGSON1
1175 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1176 release 2 instruction set.
1178 config CPU_MIPS32_R1
1179 bool "MIPS32 Release 1"
1180 depends on SYS_HAS_CPU_MIPS32_R1
1181 select CPU_HAS_PREFETCH
1182 select CPU_SUPPORTS_32BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1185 Choose this option to build a kernel for release 1 or later of the
1186 MIPS32 architecture. Most modern embedded systems with a 32-bit
1187 MIPS processor are based on a MIPS32 processor. If you know the
1188 specific type of processor in your system, choose those that one
1189 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1190 Release 2 of the MIPS32 architecture is available since several
1191 years so chances are you even have a MIPS32 Release 2 processor
1192 in which case you should choose CPU_MIPS32_R2 instead for better
1195 config CPU_MIPS32_R2
1196 bool "MIPS32 Release 2"
1197 depends on SYS_HAS_CPU_MIPS32_R2
1198 select CPU_HAS_PREFETCH
1199 select CPU_SUPPORTS_32BIT_KERNEL
1200 select CPU_SUPPORTS_HIGHMEM
1203 Choose this option to build a kernel for release 2 or later of the
1204 MIPS32 architecture. Most modern embedded systems with a 32-bit
1205 MIPS processor are based on a MIPS32 processor. If you know the
1206 specific type of processor in your system, choose those that one
1207 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1209 config CPU_MIPS64_R1
1210 bool "MIPS64 Release 1"
1211 depends on SYS_HAS_CPU_MIPS64_R1
1212 select CPU_HAS_PREFETCH
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_64BIT_KERNEL
1215 select CPU_SUPPORTS_HIGHMEM
1216 select CPU_SUPPORTS_HUGEPAGES
1218 Choose this option to build a kernel for release 1 or later of the
1219 MIPS64 architecture. Many modern embedded systems with a 64-bit
1220 MIPS processor are based on a MIPS64 processor. If you know the
1221 specific type of processor in your system, choose those that one
1222 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1223 Release 2 of the MIPS64 architecture is available since several
1224 years so chances are you even have a MIPS64 Release 2 processor
1225 in which case you should choose CPU_MIPS64_R2 instead for better
1228 config CPU_MIPS64_R2
1229 bool "MIPS64 Release 2"
1230 depends on SYS_HAS_CPU_MIPS64_R2
1231 select CPU_HAS_PREFETCH
1232 select CPU_SUPPORTS_32BIT_KERNEL
1233 select CPU_SUPPORTS_64BIT_KERNEL
1234 select CPU_SUPPORTS_HIGHMEM
1235 select CPU_SUPPORTS_HUGEPAGES
1237 Choose this option to build a kernel for release 2 or later of the
1238 MIPS64 architecture. Many modern embedded systems with a 64-bit
1239 MIPS processor are based on a MIPS64 processor. If you know the
1240 specific type of processor in your system, choose those that one
1241 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1245 depends on SYS_HAS_CPU_R3000
1247 select CPU_SUPPORTS_32BIT_KERNEL
1248 select CPU_SUPPORTS_HIGHMEM
1250 Please make sure to pick the right CPU type. Linux/MIPS is not
1251 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1252 *not* work on R4000 machines and vice versa. However, since most
1253 of the supported machines have an R4000 (or similar) CPU, R4x00
1254 might be a safe bet. If the resulting kernel does not work,
1255 try to recompile with R3000.
1259 depends on SYS_HAS_CPU_TX39XX
1260 select CPU_SUPPORTS_32BIT_KERNEL
1264 depends on SYS_HAS_CPU_VR41XX
1265 select CPU_SUPPORTS_32BIT_KERNEL
1266 select CPU_SUPPORTS_64BIT_KERNEL
1268 The options selects support for the NEC VR4100 series of processors.
1269 Only choose this option if you have one of these processors as a
1270 kernel built with this option will not run on any other type of
1271 processor or vice versa.
1275 depends on SYS_HAS_CPU_R4300
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1279 MIPS Technologies R4300-series processors.
1283 depends on SYS_HAS_CPU_R4X00
1284 select CPU_SUPPORTS_32BIT_KERNEL
1285 select CPU_SUPPORTS_64BIT_KERNEL
1286 select CPU_SUPPORTS_HUGEPAGES
1288 MIPS Technologies R4000-series processors other than 4300, including
1289 the R4000, R4400, R4600, and 4700.
1293 depends on SYS_HAS_CPU_TX49XX
1294 select CPU_HAS_PREFETCH
1295 select CPU_SUPPORTS_32BIT_KERNEL
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select CPU_SUPPORTS_HUGEPAGES
1301 depends on SYS_HAS_CPU_R5000
1302 select CPU_SUPPORTS_32BIT_KERNEL
1303 select CPU_SUPPORTS_64BIT_KERNEL
1304 select CPU_SUPPORTS_HUGEPAGES
1306 MIPS Technologies R5000-series processors other than the Nevada.
1310 depends on SYS_HAS_CPU_R5432
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1313 select CPU_SUPPORTS_HUGEPAGES
1317 depends on SYS_HAS_CPU_R5500
1318 select CPU_SUPPORTS_32BIT_KERNEL
1319 select CPU_SUPPORTS_64BIT_KERNEL
1320 select CPU_SUPPORTS_HUGEPAGES
1322 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1327 depends on SYS_HAS_CPU_R6000
1328 select CPU_SUPPORTS_32BIT_KERNEL
1330 MIPS Technologies R6000 and R6000A series processors. Note these
1331 processors are extremely rare and the support for them is incomplete.
1335 depends on SYS_HAS_CPU_NEVADA
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1338 select CPU_SUPPORTS_HUGEPAGES
1340 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1344 depends on SYS_HAS_CPU_R8000
1345 select CPU_HAS_PREFETCH
1346 select CPU_SUPPORTS_64BIT_KERNEL
1348 MIPS Technologies R8000 processors. Note these processors are
1349 uncommon and the support for them is incomplete.
1353 depends on SYS_HAS_CPU_R10000
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_32BIT_KERNEL
1356 select CPU_SUPPORTS_64BIT_KERNEL
1357 select CPU_SUPPORTS_HIGHMEM
1358 select CPU_SUPPORTS_HUGEPAGES
1360 MIPS Technologies R10000-series processors.
1364 depends on SYS_HAS_CPU_RM7000
1365 select CPU_HAS_PREFETCH
1366 select CPU_SUPPORTS_32BIT_KERNEL
1367 select CPU_SUPPORTS_64BIT_KERNEL
1368 select CPU_SUPPORTS_HIGHMEM
1369 select CPU_SUPPORTS_HUGEPAGES
1373 depends on SYS_HAS_CPU_SB1
1374 select CPU_SUPPORTS_32BIT_KERNEL
1375 select CPU_SUPPORTS_64BIT_KERNEL
1376 select CPU_SUPPORTS_HIGHMEM
1377 select CPU_SUPPORTS_HUGEPAGES
1378 select WEAK_ORDERING
1380 config CPU_CAVIUM_OCTEON
1381 bool "Cavium Octeon processor"
1382 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1383 select ARCH_SPARSEMEM_ENABLE
1384 select CPU_HAS_PREFETCH
1385 select CPU_SUPPORTS_64BIT_KERNEL
1386 select SYS_SUPPORTS_SMP
1387 select NR_CPUS_DEFAULT_16
1388 select WEAK_ORDERING
1389 select CPU_SUPPORTS_HIGHMEM
1390 select CPU_SUPPORTS_HUGEPAGES
1393 select USB_EHCI_BIG_ENDIAN_MMIO
1395 The Cavium Octeon processor is a highly integrated chip containing
1396 many ethernet hardware widgets for networking tasks. The processor
1397 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1398 Full details can be found at http://www.caviumnetworks.com.
1400 config CPU_BMIPS3300
1402 depends on SYS_HAS_CPU_BMIPS3300
1405 Broadcom BMIPS3300 processors.
1407 config CPU_BMIPS4350
1409 depends on SYS_HAS_CPU_BMIPS4350
1411 select SYS_SUPPORTS_SMP
1412 select SYS_SUPPORTS_HOTPLUG_CPU
1414 Broadcom BMIPS4350 ("VIPER") processors.
1416 config CPU_BMIPS4380
1418 depends on SYS_HAS_CPU_BMIPS4380
1420 select SYS_SUPPORTS_SMP
1421 select SYS_SUPPORTS_HOTPLUG_CPU
1423 Broadcom BMIPS4380 processors.
1425 config CPU_BMIPS5000
1427 depends on SYS_HAS_CPU_BMIPS5000
1429 select CPU_SUPPORTS_HIGHMEM
1430 select MIPS_CPU_SCACHE
1431 select SYS_SUPPORTS_SMP
1432 select SYS_SUPPORTS_HOTPLUG_CPU
1434 Broadcom BMIPS5000 processors.
1437 bool "Netlogic XLR SoC"
1438 depends on SYS_HAS_CPU_XLR
1439 select CPU_SUPPORTS_32BIT_KERNEL
1440 select CPU_SUPPORTS_64BIT_KERNEL
1441 select CPU_SUPPORTS_HIGHMEM
1442 select CPU_SUPPORTS_HUGEPAGES
1443 select WEAK_ORDERING
1444 select WEAK_REORDERING_BEYOND_LLSC
1446 Netlogic Microsystems XLR/XLS processors.
1449 bool "Netlogic XLP SoC"
1450 depends on SYS_HAS_CPU_XLP
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_64BIT_KERNEL
1453 select CPU_SUPPORTS_HIGHMEM
1454 select WEAK_ORDERING
1455 select WEAK_REORDERING_BEYOND_LLSC
1456 select CPU_HAS_PREFETCH
1459 Netlogic Microsystems XLP processors.
1463 config CPU_NOP_WORKAROUNDS
1466 config CPU_JUMP_WORKAROUNDS
1469 config CPU_LOONGSON2F_WORKAROUNDS
1470 bool "Loongson 2F Workarounds"
1472 select CPU_NOP_WORKAROUNDS
1473 select CPU_JUMP_WORKAROUNDS
1475 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1476 require workarounds. Without workarounds the system may hang
1477 unexpectedly. For more information please refer to the gas
1478 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1480 Loongson 2F03 and later have fixed these issues and no workarounds
1481 are needed. The workarounds have no significant side effect on them
1482 but may decrease the performance of the system so this option should
1483 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1486 If unsure, please say Y.
1487 endif # CPU_LOONGSON2F
1489 config SYS_SUPPORTS_ZBOOT
1491 select HAVE_KERNEL_GZIP
1492 select HAVE_KERNEL_BZIP2
1493 select HAVE_KERNEL_LZ4
1494 select HAVE_KERNEL_LZMA
1495 select HAVE_KERNEL_LZO
1496 select HAVE_KERNEL_XZ
1498 config SYS_SUPPORTS_ZBOOT_UART16550
1500 select SYS_SUPPORTS_ZBOOT
1502 config CPU_LOONGSON2
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_64BIT_KERNEL
1506 select CPU_SUPPORTS_HIGHMEM
1507 select CPU_SUPPORTS_HUGEPAGES
1509 config CPU_LOONGSON1
1513 select CPU_HAS_PREFETCH
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select DMA_NONCOHERENT
1523 select SWAP_IO_SPACE
1524 select WEAK_ORDERING
1526 config SYS_HAS_CPU_LOONGSON2E
1529 config SYS_HAS_CPU_LOONGSON2F
1531 select CPU_SUPPORTS_CPUFREQ
1532 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1533 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1535 config SYS_HAS_CPU_LOONGSON1B
1538 config SYS_HAS_CPU_MIPS32_R1
1541 config SYS_HAS_CPU_MIPS32_R2
1544 config SYS_HAS_CPU_MIPS64_R1
1547 config SYS_HAS_CPU_MIPS64_R2
1550 config SYS_HAS_CPU_R3000
1553 config SYS_HAS_CPU_TX39XX
1556 config SYS_HAS_CPU_VR41XX
1559 config SYS_HAS_CPU_R4300
1562 config SYS_HAS_CPU_R4X00
1565 config SYS_HAS_CPU_TX49XX
1568 config SYS_HAS_CPU_R5000
1571 config SYS_HAS_CPU_R5432
1574 config SYS_HAS_CPU_R5500
1577 config SYS_HAS_CPU_R6000
1580 config SYS_HAS_CPU_NEVADA
1583 config SYS_HAS_CPU_R8000
1586 config SYS_HAS_CPU_R10000
1589 config SYS_HAS_CPU_RM7000
1592 config SYS_HAS_CPU_SB1
1595 config SYS_HAS_CPU_CAVIUM_OCTEON
1598 config SYS_HAS_CPU_BMIPS3300
1601 config SYS_HAS_CPU_BMIPS4350
1604 config SYS_HAS_CPU_BMIPS4380
1607 config SYS_HAS_CPU_BMIPS5000
1610 config SYS_HAS_CPU_XLR
1613 config SYS_HAS_CPU_XLP
1617 # CPU may reorder R->R, R->W, W->R, W->W
1618 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1620 config WEAK_ORDERING
1624 # CPU may reorder reads and writes beyond LL/SC
1625 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1627 config WEAK_REORDERING_BEYOND_LLSC
1632 # These two indicate any level of the MIPS32 and MIPS64 architecture
1636 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1640 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1643 # These two indicate the revision of the architecture, either Release 1 or Release 2
1647 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1651 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1653 config SYS_SUPPORTS_32BIT_KERNEL
1655 config SYS_SUPPORTS_64BIT_KERNEL
1657 config CPU_SUPPORTS_32BIT_KERNEL
1659 config CPU_SUPPORTS_64BIT_KERNEL
1661 config CPU_SUPPORTS_CPUFREQ
1663 config CPU_SUPPORTS_ADDRWINCFG
1665 config CPU_SUPPORTS_HUGEPAGES
1667 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1669 config MIPS_PGD_C0_CONTEXT
1671 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1674 # Set to y for ptrace access to watch registers.
1676 config HARDWARE_WATCHPOINTS
1678 default y if CPU_MIPSR1 || CPU_MIPSR2
1683 prompt "Kernel code model"
1685 You should only select this option if you have a workload that
1686 actually benefits from 64-bit processing or if your machine has
1687 large memory. You will only be presented a single option in this
1688 menu if your system does not support both 32-bit and 64-bit kernels.
1691 bool "32-bit kernel"
1692 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1695 Select this option if you want to build a 32-bit kernel.
1697 bool "64-bit kernel"
1698 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1700 Select this option if you want to build a 64-bit kernel.
1705 bool "KVM Guest Kernel"
1706 depends on BROKEN_ON_SMP
1708 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1710 config KVM_HOST_FREQ
1711 int "KVM Host Processor Frequency (MHz)"
1712 depends on KVM_GUEST
1715 Select this option if building a guest kernel for KVM to skip
1716 RTC emulation when determining guest CPU Frequency. Instead, the guest
1717 processor frequency is automatically derived from the host frequency.
1720 prompt "Kernel page size"
1721 default PAGE_SIZE_4KB
1723 config PAGE_SIZE_4KB
1725 depends on !CPU_LOONGSON2
1727 This option select the standard 4kB Linux page size. On some
1728 R3000-family processors this is the only available page size. Using
1729 4kB page size will minimize memory consumption and is therefore
1730 recommended for low memory systems.
1732 config PAGE_SIZE_8KB
1734 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1736 Using 8kB page size will result in higher performance kernel at
1737 the price of higher memory consumption. This option is available
1738 only on R8000 and cnMIPS processors. Note that you will need a
1739 suitable Linux distribution to support this.
1741 config PAGE_SIZE_16KB
1743 depends on !CPU_R3000 && !CPU_TX39XX
1745 Using 16kB page size will result in higher performance kernel at
1746 the price of higher memory consumption. This option is available on
1747 all non-R3000 family processors. Note that you will need a suitable
1748 Linux distribution to support this.
1750 config PAGE_SIZE_32KB
1752 depends on CPU_CAVIUM_OCTEON
1754 Using 32kB page size will result in higher performance kernel at
1755 the price of higher memory consumption. This option is available
1756 only on cnMIPS cores. Note that you will need a suitable Linux
1757 distribution to support this.
1759 config PAGE_SIZE_64KB
1761 depends on !CPU_R3000 && !CPU_TX39XX
1763 Using 64kB page size will result in higher performance kernel at
1764 the price of higher memory consumption. This option is available on
1765 all non-R3000 family processor. Not that at the time of this
1766 writing this option is still high experimental.
1770 config FORCE_MAX_ZONEORDER
1771 int "Maximum zone order"
1772 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1773 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1774 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1775 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1776 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1777 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1781 The kernel memory allocator divides physically contiguous memory
1782 blocks into "zones", where each zone is a power of two number of
1783 pages. This option selects the largest power of two that the kernel
1784 keeps in the memory allocator. If you need to allocate very large
1785 blocks of physically contiguous memory, then you may need to
1786 increase this value.
1788 This config option is actually maximum order plus one. For example,
1789 a value of 11 means that the largest free memory block is 2^10 pages.
1791 The page size is not necessarily 4KB. Keep this in mind
1792 when choosing a value for this option.
1795 bool "Use GIC global counter for clock events"
1796 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1798 Use the GIC global counter for the clock events. The R4K clock
1799 event driver is always present, so if the platform ends up not
1800 detecting a GIC, it will fall back to the R4K timer for the
1801 generation of clock events.
1806 config IP22_CPU_SCACHE
1811 # Support for a MIPS32 / MIPS64 style S-caches
1813 config MIPS_CPU_SCACHE
1817 config R5000_CPU_SCACHE
1821 config RM7000_CPU_SCACHE
1825 config SIBYTE_DMA_PAGEOPS
1826 bool "Use DMA to clear/copy pages"
1829 Instead of using the CPU to zero and copy pages, use a Data Mover
1830 channel. These DMA channels are otherwise unused by the standard
1831 SiByte Linux port. Seems to give a small performance benefit.
1833 config CPU_HAS_PREFETCH
1836 config CPU_GENERIC_DUMP_TLB
1838 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1842 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1844 config CPU_R4K_CACHE_TLB
1846 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1849 prompt "MIPS MT options"
1851 config MIPS_MT_DISABLED
1852 bool "Disable multithreading support."
1854 Use this option if your workload can't take advantage of
1855 MIPS hardware multithreading support. On systems that don't have
1856 the option of an MT-enabled processor this option will be the only
1857 option in this menu.
1860 bool "Use 1 TC on each available VPE for SMP"
1861 depends on SYS_SUPPORTS_MULTITHREADING
1862 select CPU_MIPSR2_IRQ_VI
1863 select CPU_MIPSR2_IRQ_EI
1866 select SYS_SUPPORTS_SCHED_SMT if SMP
1867 select SYS_SUPPORTS_SMP
1869 select MIPS_PERF_SHARED_TC_COUNTERS
1871 This is a kernel model which is known a VSMP but lately has been
1872 marketesed into SMVP.
1873 Virtual SMP uses the processor's VPEs to implement virtual
1874 processors. In currently available configuration of the 34K processor
1875 this allows for a dual processor. Both processors will share the same
1876 primary caches; each will obtain the half of the TLB for it's own
1877 exclusive use. For a layman this model can be described as similar to
1878 what Intel calls Hyperthreading.
1880 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1883 bool "SMTC: Use all TCs on all VPEs for SMP"
1884 depends on CPU_MIPS32_R2
1885 #depends on CPU_MIPS64_R2 # once there is hardware ...
1886 depends on SYS_SUPPORTS_MULTITHREADING
1887 select CPU_MIPSR2_IRQ_VI
1888 select CPU_MIPSR2_IRQ_EI
1890 select NR_CPUS_DEFAULT_8
1892 select SYS_SUPPORTS_SMP
1895 This is a kernel model which is known a SMTC or lately has been
1896 marketesed into SMVP.
1897 is presenting the available TC's of the core as processors to Linux.
1898 On currently available 34K processors this means a Linux system will
1899 see up to 5 processors. The implementation of the SMTC kernel differs
1900 significantly from VSMP and cannot efficiently coexist in the same
1901 kernel binary so the choice between VSMP and SMTC is a compile time
1904 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1912 bool "SMT (multithreading) scheduler support"
1913 depends on SYS_SUPPORTS_SCHED_SMT
1916 SMT scheduler support improves the CPU scheduler's decision making
1917 when dealing with MIPS MT enabled cores at a cost of slightly
1918 increased overhead in some places. If unsure say N here.
1920 config SYS_SUPPORTS_SCHED_SMT
1923 config SYS_SUPPORTS_MULTITHREADING
1926 config MIPS_MT_FPAFF
1927 bool "Dynamic FPU affinity for FP-intensive threads"
1929 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1931 config MIPS_VPE_LOADER
1932 bool "VPE loader support."
1933 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1934 select CPU_MIPSR2_IRQ_VI
1935 select CPU_MIPSR2_IRQ_EI
1938 Includes a loader for loading an elf relocatable object
1939 onto another VPE and running it.
1941 config MIPS_MT_SMTC_IM_BACKSTOP
1942 bool "Use per-TC register bits as backstop for inhibited IM bits"
1943 depends on MIPS_MT_SMTC
1946 To support multiple TC microthreads acting as "CPUs" within
1947 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1948 during interrupt handling. To support legacy drivers and interrupt
1949 controller management code, SMTC has a "backstop" to track and
1950 if necessary restore the interrupt mask. This has some performance
1951 impact on interrupt service overhead.
1953 config MIPS_MT_SMTC_IRQAFF
1954 bool "Support IRQ affinity API"
1955 depends on MIPS_MT_SMTC
1958 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1959 for SMTC Linux kernel. Requires platform support, of which
1960 an example can be found in the MIPS kernel i8259 and Malta
1961 platform code. Adds some overhead to interrupt dispatch, and
1962 should be used only if you know what you are doing.
1964 config MIPS_VPE_LOADER_TOM
1965 bool "Load VPE program into memory hidden from linux"
1966 depends on MIPS_VPE_LOADER
1969 The loader can use memory that is present but has been hidden from
1970 Linux using the kernel command line option "mem=xxMB". It's up to
1971 you to ensure the amount you put in the option and the space your
1972 program requires is less or equal to the amount physically present.
1974 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1975 config MIPS_VPE_APSP_API
1976 bool "Enable support for AP/SP API (RTLX)"
1977 depends on MIPS_VPE_LOADER
1981 bool "MIPS CMP framework support"
1982 depends on SYS_SUPPORTS_MIPS_CMP
1985 select SYS_SUPPORTS_SMP
1986 select SYS_SUPPORTS_SCHED_SMT if SMP
1987 select WEAK_ORDERING
1990 This is a placeholder option for the GCMP work. It will need to
1991 be handled differently...
1993 config SB1_PASS_1_WORKAROUNDS
1995 depends on CPU_SB1_PASS_1
1998 config SB1_PASS_2_WORKAROUNDS
2000 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2003 config SB1_PASS_2_1_WORKAROUNDS
2005 depends on CPU_SB1 && CPU_SB1_PASS_2
2009 config 64BIT_PHYS_ADDR
2012 config ARCH_PHYS_ADDR_T_64BIT
2013 def_bool 64BIT_PHYS_ADDR
2015 config CPU_HAS_SMARTMIPS
2016 depends on SYS_SUPPORTS_SMARTMIPS
2017 bool "Support for the SmartMIPS ASE"
2019 SmartMIPS is a extension of the MIPS32 architecture aimed at
2020 increased security at both hardware and software level for
2021 smartcards. Enabling this option will allow proper use of the
2022 SmartMIPS instructions by Linux applications. However a kernel with
2023 this option will not work on a MIPS core without SmartMIPS core. If
2024 you don't know you probably don't have SmartMIPS and should say N
2027 config CPU_MICROMIPS
2028 depends on SYS_SUPPORTS_MICROMIPS
2029 bool "Build kernel using microMIPS ISA"
2031 When this option is enabled the kernel will be built using the
2041 # Vectored interrupt mode is an R2 feature
2043 config CPU_MIPSR2_IRQ_VI
2047 # Extended interrupt mode is an R2 feature
2049 config CPU_MIPSR2_IRQ_EI
2054 depends on !CPU_R3000
2060 config CPU_DADDI_WORKAROUNDS
2063 config CPU_R4000_WORKAROUNDS
2065 select CPU_R4400_WORKAROUNDS
2067 config CPU_R4400_WORKAROUNDS
2071 # - Highmem only makes sense for the 32-bit kernel.
2072 # - The current highmem code will only work properly on physically indexed
2073 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2074 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2075 # moment we protect the user and offer the highmem option only on machines
2076 # where it's known to be safe. This will not offer highmem on a few systems
2077 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2078 # indexed CPUs but we're playing safe.
2079 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2080 # know they might have memory configurations that could make use of highmem
2084 bool "High Memory Support"
2085 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2087 config CPU_SUPPORTS_HIGHMEM
2090 config SYS_SUPPORTS_HIGHMEM
2093 config SYS_SUPPORTS_SMARTMIPS
2096 config SYS_SUPPORTS_MICROMIPS
2099 config ARCH_FLATMEM_ENABLE
2101 depends on !NUMA && !CPU_LOONGSON2
2103 config ARCH_DISCONTIGMEM_ENABLE
2105 default y if SGI_IP27
2107 Say Y to support efficient handling of discontiguous physical memory,
2108 for architectures which are either NUMA (Non-Uniform Memory Access)
2109 or have huge holes in the physical address space for other reasons.
2110 See <file:Documentation/vm/numa> for more.
2112 config ARCH_SPARSEMEM_ENABLE
2114 select SPARSEMEM_STATIC
2118 depends on SYS_SUPPORTS_NUMA
2120 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2121 Access). This option improves performance on systems with more
2122 than two nodes; on two node systems it is generally better to
2123 leave it disabled; on single node systems disable this option
2126 config SYS_SUPPORTS_NUMA
2132 depends on NEED_MULTIPLE_NODES
2134 config HW_PERF_EVENTS
2135 bool "Enable hardware performance counter support for perf events"
2136 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2139 Enable hardware performance counter support for perf events. If
2140 disabled, perf events will use software events only.
2145 bool "Multi-Processing support"
2146 depends on SYS_SUPPORTS_SMP
2147 select USE_GENERIC_SMP_HELPERS
2149 This enables support for systems with more than one CPU. If you have
2150 a system with only one CPU, like most personal computers, say N. If
2151 you have a system with more than one CPU, say Y.
2153 If you say N here, the kernel will run on single and multiprocessor
2154 machines, but will use only one CPU of a multiprocessor machine. If
2155 you say Y here, the kernel will run on many, but not all,
2156 singleprocessor machines. On a singleprocessor machine, the kernel
2157 will run faster if you say N here.
2159 People using multiprocessor machines who say Y here should also say
2160 Y to "Enhanced Real Time Clock Support", below.
2162 See also the SMP-HOWTO available at
2163 <http://www.tldp.org/docs.html#howto>.
2165 If you don't know what to do here, say N.
2170 config SYS_SUPPORTS_MIPS_CMP
2173 config SYS_SUPPORTS_SMP
2176 config NR_CPUS_DEFAULT_4
2179 config NR_CPUS_DEFAULT_8
2182 config NR_CPUS_DEFAULT_16
2185 config NR_CPUS_DEFAULT_32
2188 config NR_CPUS_DEFAULT_64
2192 int "Maximum number of CPUs (2-64)"
2195 default "4" if NR_CPUS_DEFAULT_4
2196 default "8" if NR_CPUS_DEFAULT_8
2197 default "16" if NR_CPUS_DEFAULT_16
2198 default "32" if NR_CPUS_DEFAULT_32
2199 default "64" if NR_CPUS_DEFAULT_64
2201 This allows you to specify the maximum number of CPUs which this
2202 kernel will support. The maximum supported value is 32 for 32-bit
2203 kernel and 64 for 64-bit kernels; the minimum value which makes
2204 sense is 1 for Qemu (useful only for kernel debugging purposes)
2205 and 2 for all others.
2207 This is purely to save memory - each supported CPU adds
2208 approximately eight kilobytes to the kernel image. For best
2209 performance should round up your number of processors to the next
2212 config MIPS_PERF_SHARED_TC_COUNTERS
2216 # Timer Interrupt Frequency Configuration
2220 prompt "Timer frequency"
2223 Allows the configuration of the timer frequency.
2226 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2229 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2232 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2235 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2244 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2248 config SYS_SUPPORTS_48HZ
2251 config SYS_SUPPORTS_100HZ
2254 config SYS_SUPPORTS_128HZ
2257 config SYS_SUPPORTS_250HZ
2260 config SYS_SUPPORTS_256HZ
2263 config SYS_SUPPORTS_1000HZ
2266 config SYS_SUPPORTS_1024HZ
2269 config SYS_SUPPORTS_ARBIT_HZ
2271 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2272 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2273 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2274 !SYS_SUPPORTS_1024HZ
2279 default 100 if HZ_100
2280 default 128 if HZ_128
2281 default 250 if HZ_250
2282 default 256 if HZ_256
2283 default 1000 if HZ_1000
2284 default 1024 if HZ_1024
2286 source "kernel/Kconfig.preempt"
2289 bool "Kexec system call"
2291 kexec is a system call that implements the ability to shutdown your
2292 current kernel, and to start another kernel. It is like a reboot
2293 but it is independent of the system firmware. And like a reboot
2294 you can start any kernel with it, not just Linux.
2296 The name comes from the similarity to the exec system call.
2298 It is an ongoing process to be certain the hardware in a machine
2299 is properly shutdown, so do not be surprised if this code does not
2300 initially work for you. As of this writing the exact hardware
2301 interface is strongly in flux, so no good recommendation can be
2305 bool "Kernel crash dumps"
2307 Generate crash dump after being started by kexec.
2308 This should be normally only set in special crash dump kernels
2309 which are loaded in the main kernel with kexec-tools into
2310 a specially reserved region and then later executed after
2311 a crash by kdump/kexec. The crash dump kernel must be compiled
2312 to a memory address not used by the main kernel or firmware using
2315 config PHYSICAL_START
2316 hex "Physical address where the kernel is loaded"
2317 default "0xffffffff84000000" if 64BIT
2318 default "0x84000000" if 32BIT
2319 depends on CRASH_DUMP
2321 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2322 If you plan to use kernel for capturing the crash dump change
2323 this value to start of the reserved region (the "X" value as
2324 specified in the "crashkernel=YM@XM" command line boot parameter
2325 passed to the panic-ed kernel).
2328 bool "Enable seccomp to safely compute untrusted bytecode"
2332 This kernel feature is useful for number crunching applications
2333 that may need to compute untrusted bytecode during their
2334 execution. By using pipes or other transports made available to
2335 the process as file descriptors supporting the read/write
2336 syscalls, it's possible to isolate those applications in
2337 their own address space using seccomp. Once seccomp is
2338 enabled via /proc/<pid>/seccomp, it cannot be disabled
2339 and the task is only allowed to execute a few safe syscalls
2340 defined by each seccomp mode.
2342 If unsure, say Y. Only embedded should say N here.
2344 config CC_STACKPROTECTOR
2345 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2347 This option turns on the -fstack-protector GCC feature. This
2348 feature puts, at the beginning of functions, a canary value on
2349 the stack just before the return address, and validates
2350 the value just before actually returning. Stack based buffer
2351 overflows (that need to overwrite this return address) now also
2352 overwrite the canary, which gets detected and the attack is then
2353 neutralized via a kernel panic.
2355 This feature requires gcc version 4.2 or above.
2360 select OF_EARLY_FLATTREE
2365 config LOCKDEP_SUPPORT
2369 config STACKTRACE_SUPPORT
2373 source "init/Kconfig"
2375 source "kernel/Kconfig.freezer"
2377 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2385 bool "Support for PCI controller"
2386 depends on HW_HAS_PCI
2388 select NO_GENERIC_PCI_IOPORT_MAP
2390 Find out whether you have a PCI motherboard. PCI is the name of a
2391 bus system, i.e. the way the CPU talks to the other stuff inside
2392 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2398 source "drivers/pci/Kconfig"
2400 source "drivers/pci/pcie/Kconfig"
2403 # ISA support is now enabled via select. Too many systems still have the one
2404 # or other ISA chip on the board that users don't know about so don't expect
2405 # users to choose the right thing ...
2412 depends on HW_HAS_EISA
2414 select GENERIC_ISA_DMA
2416 The Extended Industry Standard Architecture (EISA) bus was
2417 developed as an open alternative to the IBM MicroChannel bus.
2419 The EISA bus provided some of the features of the IBM MicroChannel
2420 bus while maintaining backward compatibility with cards made for
2421 the older ISA bus. The EISA bus saw limited use between 1988 and
2422 1995 when it was made obsolete by the PCI bus.
2424 Say Y here if you are building a kernel for an EISA-based machine.
2428 source "drivers/eisa/Kconfig"
2431 bool "TURBOchannel support"
2432 depends on MACH_DECSTATION
2434 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2435 processors. TURBOchannel programming specifications are available
2437 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2439 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2440 Linux driver support status is documented at:
2441 <http://www.linux-mips.org/wiki/DECstation>
2451 select MIPS_EXTERNAL_TIMER
2459 source "drivers/pcmcia/Kconfig"
2461 source "drivers/pci/hotplug/Kconfig"
2464 bool "RapidIO support"
2468 If you say Y here, the kernel will include drivers and
2469 infrastructure code to support RapidIO interconnect devices.
2471 source "drivers/rapidio/Kconfig"
2475 menu "Executable file formats"
2477 source "fs/Kconfig.binfmt"
2482 config MIPS32_COMPAT
2483 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2486 Select this option if you want Linux/MIPS 32-bit binary
2487 compatibility. Since all software available for Linux/MIPS is
2488 currently 32-bit you should say Y here.
2492 depends on MIPS32_COMPAT
2493 select ARCH_WANT_OLD_COMPAT_IPC
2496 config SYSVIPC_COMPAT
2498 depends on COMPAT && SYSVIPC
2502 bool "Kernel support for o32 binaries"
2503 depends on MIPS32_COMPAT
2505 Select this option if you want to run o32 binaries. These are pure
2506 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2507 existing binaries are in this format.
2512 bool "Kernel support for n32 binaries"
2513 depends on MIPS32_COMPAT
2515 Select this option if you want to run n32 binaries. These are
2516 64-bit binaries using 32-bit quantities for addressing and certain
2517 data that would normally be 64-bit. They are used in special
2524 default y if MIPS32_O32 || MIPS32_N32
2528 menu "Power management options"
2530 config ARCH_HIBERNATION_POSSIBLE
2532 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2534 config ARCH_SUSPEND_POSSIBLE
2536 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2538 source "kernel/power/Kconfig"
2542 config MIPS_EXTERNAL_TIMER
2545 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2546 menu "CPU Power Management"
2547 source "drivers/cpufreq/Kconfig"
2551 source "net/Kconfig"
2553 source "drivers/Kconfig"
2555 source "drivers/firmware/Kconfig"
2559 source "arch/mips/Kconfig.debug"
2561 source "security/Kconfig"
2563 source "crypto/Kconfig"
2565 source "lib/Kconfig"
2567 source "arch/mips/kvm/Kconfig"