4 select HAVE_CONTEXT_TRACKING
5 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select HAVE_DEBUG_KMEMLEAK
21 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
22 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
23 select RTC_LIB if !MACH_LOONGSON
24 select GENERIC_ATOMIC64 if !64BIT
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
27 select HAVE_DMA_API_DEBUG
28 select HAVE_GENERIC_HARDIRQS
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_PCI_IOMAP
32 select HAVE_ARCH_JUMP_LABEL
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select IRQ_FORCED_THREADING
36 select HAVE_MEMBLOCK_NODE_MAP
37 select ARCH_DISCARD_MEMBLOCK
38 select GENERIC_SMP_IDLE_THREAD
39 select BUILDTIME_EXTABLE_SORT
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE
42 select HAVE_MOD_ARCH_SPECIFIC
44 select MODULES_USE_ELF_REL if MODULES
45 select MODULES_USE_ELF_RELA if MODULES && 64BIT
46 select CLONE_BACKWARDS
47 select HAVE_DEBUG_STACKOVERFLOW
49 menu "Machine selection"
56 bool "Alchemy processor based machines"
57 select 64BIT_PHYS_ADDR
61 select SYS_HAS_CPU_MIPS32_R1
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_APM_EMULATION
64 select ARCH_REQUIRE_GPIOLIB
65 select SYS_SUPPORTS_ZBOOT
66 select USB_ARCH_HAS_OHCI
67 select USB_ARCH_HAS_EHCI
70 bool "Texas Instruments AR7"
72 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select SYS_SUPPORTS_ZBOOT_UART16550
83 select ARCH_REQUIRE_GPIOLIB
87 Support for the Texas Instruments AR7 System-on-a-Chip
88 family: TNETD7100, 7200 and 7300.
91 bool "Atheros AR71XX/AR724X/AR913X based boards"
92 select ARCH_REQUIRE_GPIOLIB
96 select DMA_NONCOHERENT
101 select SYS_HAS_CPU_MIPS32_R2
102 select SYS_HAS_EARLY_PRINTK
103 select SYS_SUPPORTS_32BIT_KERNEL
104 select SYS_SUPPORTS_BIG_ENDIAN
106 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
109 bool "Broadcom BCM47XX based boards"
110 select ARCH_WANT_OPTIONAL_GPIOLIB
114 select DMA_NONCOHERENT
118 select SYS_HAS_CPU_MIPS32_R1
119 select NO_EXCEPT_FILL
120 select SYS_SUPPORTS_32BIT_KERNEL
121 select SYS_SUPPORTS_LITTLE_ENDIAN
122 select SYS_HAS_EARLY_PRINTK
124 Support for BCM47XX based boards
127 bool "Broadcom BCM63XX based boards"
131 select DMA_NONCOHERENT
133 select SYS_HAS_CPU_MIPS32_R1
134 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_BIG_ENDIAN
137 select SYS_HAS_EARLY_PRINTK
139 select ARCH_REQUIRE_GPIOLIB
142 Support for BCM63XX based boards
149 select DMA_NONCOHERENT
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_LZMA
1494 select HAVE_KERNEL_LZO
1496 config SYS_SUPPORTS_ZBOOT_UART16550
1498 select SYS_SUPPORTS_ZBOOT
1500 config CPU_LOONGSON2
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select CPU_SUPPORTS_64BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1505 select CPU_SUPPORTS_HUGEPAGES
1507 config CPU_LOONGSON1
1511 select CPU_HAS_PREFETCH
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_HIGHMEM
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select DMA_NONCOHERENT
1521 select SWAP_IO_SPACE
1522 select WEAK_ORDERING
1524 config SYS_HAS_CPU_LOONGSON2E
1527 config SYS_HAS_CPU_LOONGSON2F
1529 select CPU_SUPPORTS_CPUFREQ
1530 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1531 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1533 config SYS_HAS_CPU_LOONGSON1B
1536 config SYS_HAS_CPU_MIPS32_R1
1539 config SYS_HAS_CPU_MIPS32_R2
1542 config SYS_HAS_CPU_MIPS64_R1
1545 config SYS_HAS_CPU_MIPS64_R2
1548 config SYS_HAS_CPU_R3000
1551 config SYS_HAS_CPU_TX39XX
1554 config SYS_HAS_CPU_VR41XX
1557 config SYS_HAS_CPU_R4300
1560 config SYS_HAS_CPU_R4X00
1563 config SYS_HAS_CPU_TX49XX
1566 config SYS_HAS_CPU_R5000
1569 config SYS_HAS_CPU_R5432
1572 config SYS_HAS_CPU_R5500
1575 config SYS_HAS_CPU_R6000
1578 config SYS_HAS_CPU_NEVADA
1581 config SYS_HAS_CPU_R8000
1584 config SYS_HAS_CPU_R10000
1587 config SYS_HAS_CPU_RM7000
1590 config SYS_HAS_CPU_SB1
1593 config SYS_HAS_CPU_CAVIUM_OCTEON
1596 config SYS_HAS_CPU_BMIPS3300
1599 config SYS_HAS_CPU_BMIPS4350
1602 config SYS_HAS_CPU_BMIPS4380
1605 config SYS_HAS_CPU_BMIPS5000
1608 config SYS_HAS_CPU_XLR
1611 config SYS_HAS_CPU_XLP
1615 # CPU may reorder R->R, R->W, W->R, W->W
1616 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1618 config WEAK_ORDERING
1622 # CPU may reorder reads and writes beyond LL/SC
1623 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1625 config WEAK_REORDERING_BEYOND_LLSC
1630 # These two indicate any level of the MIPS32 and MIPS64 architecture
1634 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1638 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1641 # These two indicate the revision of the architecture, either Release 1 or Release 2
1645 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1649 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1651 config SYS_SUPPORTS_32BIT_KERNEL
1653 config SYS_SUPPORTS_64BIT_KERNEL
1655 config CPU_SUPPORTS_32BIT_KERNEL
1657 config CPU_SUPPORTS_64BIT_KERNEL
1659 config CPU_SUPPORTS_CPUFREQ
1661 config CPU_SUPPORTS_ADDRWINCFG
1663 config CPU_SUPPORTS_HUGEPAGES
1665 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1667 config MIPS_PGD_C0_CONTEXT
1669 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1672 # Set to y for ptrace access to watch registers.
1674 config HARDWARE_WATCHPOINTS
1676 default y if CPU_MIPSR1 || CPU_MIPSR2
1681 prompt "Kernel code model"
1683 You should only select this option if you have a workload that
1684 actually benefits from 64-bit processing or if your machine has
1685 large memory. You will only be presented a single option in this
1686 menu if your system does not support both 32-bit and 64-bit kernels.
1689 bool "32-bit kernel"
1690 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1693 Select this option if you want to build a 32-bit kernel.
1695 bool "64-bit kernel"
1696 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1698 Select this option if you want to build a 64-bit kernel.
1703 bool "KVM Guest Kernel"
1704 depends on BROKEN_ON_SMP
1706 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1708 config KVM_HOST_FREQ
1709 int "KVM Host Processor Frequency (MHz)"
1710 depends on KVM_GUEST
1713 Select this option if building a guest kernel for KVM to skip
1714 RTC emulation when determining guest CPU Frequency. Instead, the guest
1715 processor frequency is automatically derived from the host frequency.
1718 prompt "Kernel page size"
1719 default PAGE_SIZE_4KB
1721 config PAGE_SIZE_4KB
1723 depends on !CPU_LOONGSON2
1725 This option select the standard 4kB Linux page size. On some
1726 R3000-family processors this is the only available page size. Using
1727 4kB page size will minimize memory consumption and is therefore
1728 recommended for low memory systems.
1730 config PAGE_SIZE_8KB
1732 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1734 Using 8kB page size will result in higher performance kernel at
1735 the price of higher memory consumption. This option is available
1736 only on R8000 and cnMIPS processors. Note that you will need a
1737 suitable Linux distribution to support this.
1739 config PAGE_SIZE_16KB
1741 depends on !CPU_R3000 && !CPU_TX39XX
1743 Using 16kB page size will result in higher performance kernel at
1744 the price of higher memory consumption. This option is available on
1745 all non-R3000 family processors. Note that you will need a suitable
1746 Linux distribution to support this.
1748 config PAGE_SIZE_32KB
1750 depends on CPU_CAVIUM_OCTEON
1752 Using 32kB page size will result in higher performance kernel at
1753 the price of higher memory consumption. This option is available
1754 only on cnMIPS cores. Note that you will need a suitable Linux
1755 distribution to support this.
1757 config PAGE_SIZE_64KB
1759 depends on !CPU_R3000 && !CPU_TX39XX
1761 Using 64kB page size will result in higher performance kernel at
1762 the price of higher memory consumption. This option is available on
1763 all non-R3000 family processor. Not that at the time of this
1764 writing this option is still high experimental.
1768 config FORCE_MAX_ZONEORDER
1769 int "Maximum zone order"
1770 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1771 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1772 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1773 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1774 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1775 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1779 The kernel memory allocator divides physically contiguous memory
1780 blocks into "zones", where each zone is a power of two number of
1781 pages. This option selects the largest power of two that the kernel
1782 keeps in the memory allocator. If you need to allocate very large
1783 blocks of physically contiguous memory, then you may need to
1784 increase this value.
1786 This config option is actually maximum order plus one. For example,
1787 a value of 11 means that the largest free memory block is 2^10 pages.
1789 The page size is not necessarily 4KB. Keep this in mind
1790 when choosing a value for this option.
1793 bool "Use GIC global counter for clock events"
1794 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1796 Use the GIC global counter for the clock events. The R4K clock
1797 event driver is always present, so if the platform ends up not
1798 detecting a GIC, it will fall back to the R4K timer for the
1799 generation of clock events.
1804 config IP22_CPU_SCACHE
1809 # Support for a MIPS32 / MIPS64 style S-caches
1811 config MIPS_CPU_SCACHE
1815 config R5000_CPU_SCACHE
1819 config RM7000_CPU_SCACHE
1823 config SIBYTE_DMA_PAGEOPS
1824 bool "Use DMA to clear/copy pages"
1827 Instead of using the CPU to zero and copy pages, use a Data Mover
1828 channel. These DMA channels are otherwise unused by the standard
1829 SiByte Linux port. Seems to give a small performance benefit.
1831 config CPU_HAS_PREFETCH
1834 config CPU_GENERIC_DUMP_TLB
1836 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1840 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1842 config CPU_R4K_CACHE_TLB
1844 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1847 prompt "MIPS MT options"
1849 config MIPS_MT_DISABLED
1850 bool "Disable multithreading support."
1852 Use this option if your workload can't take advantage of
1853 MIPS hardware multithreading support. On systems that don't have
1854 the option of an MT-enabled processor this option will be the only
1855 option in this menu.
1858 bool "Use 1 TC on each available VPE for SMP"
1859 depends on SYS_SUPPORTS_MULTITHREADING
1860 select CPU_MIPSR2_IRQ_VI
1861 select CPU_MIPSR2_IRQ_EI
1864 select SYS_SUPPORTS_SCHED_SMT if SMP
1865 select SYS_SUPPORTS_SMP
1867 select MIPS_PERF_SHARED_TC_COUNTERS
1869 This is a kernel model which is known a VSMP but lately has been
1870 marketesed into SMVP.
1871 Virtual SMP uses the processor's VPEs to implement virtual
1872 processors. In currently available configuration of the 34K processor
1873 this allows for a dual processor. Both processors will share the same
1874 primary caches; each will obtain the half of the TLB for it's own
1875 exclusive use. For a layman this model can be described as similar to
1876 what Intel calls Hyperthreading.
1878 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1881 bool "SMTC: Use all TCs on all VPEs for SMP"
1882 depends on CPU_MIPS32_R2
1883 #depends on CPU_MIPS64_R2 # once there is hardware ...
1884 depends on SYS_SUPPORTS_MULTITHREADING
1885 select CPU_MIPSR2_IRQ_VI
1886 select CPU_MIPSR2_IRQ_EI
1888 select NR_CPUS_DEFAULT_8
1890 select SYS_SUPPORTS_SMP
1893 This is a kernel model which is known a SMTC or lately has been
1894 marketesed into SMVP.
1895 is presenting the available TC's of the core as processors to Linux.
1896 On currently available 34K processors this means a Linux system will
1897 see up to 5 processors. The implementation of the SMTC kernel differs
1898 significantly from VSMP and cannot efficiently coexist in the same
1899 kernel binary so the choice between VSMP and SMTC is a compile time
1902 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1910 bool "SMT (multithreading) scheduler support"
1911 depends on SYS_SUPPORTS_SCHED_SMT
1914 SMT scheduler support improves the CPU scheduler's decision making
1915 when dealing with MIPS MT enabled cores at a cost of slightly
1916 increased overhead in some places. If unsure say N here.
1918 config SYS_SUPPORTS_SCHED_SMT
1921 config SYS_SUPPORTS_MULTITHREADING
1924 config MIPS_MT_FPAFF
1925 bool "Dynamic FPU affinity for FP-intensive threads"
1927 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1929 config MIPS_VPE_LOADER
1930 bool "VPE loader support."
1931 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1932 select CPU_MIPSR2_IRQ_VI
1933 select CPU_MIPSR2_IRQ_EI
1936 Includes a loader for loading an elf relocatable object
1937 onto another VPE and running it.
1939 config MIPS_MT_SMTC_IM_BACKSTOP
1940 bool "Use per-TC register bits as backstop for inhibited IM bits"
1941 depends on MIPS_MT_SMTC
1944 To support multiple TC microthreads acting as "CPUs" within
1945 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1946 during interrupt handling. To support legacy drivers and interrupt
1947 controller management code, SMTC has a "backstop" to track and
1948 if necessary restore the interrupt mask. This has some performance
1949 impact on interrupt service overhead.
1951 config MIPS_MT_SMTC_IRQAFF
1952 bool "Support IRQ affinity API"
1953 depends on MIPS_MT_SMTC
1956 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1957 for SMTC Linux kernel. Requires platform support, of which
1958 an example can be found in the MIPS kernel i8259 and Malta
1959 platform code. Adds some overhead to interrupt dispatch, and
1960 should be used only if you know what you are doing.
1962 config MIPS_VPE_LOADER_TOM
1963 bool "Load VPE program into memory hidden from linux"
1964 depends on MIPS_VPE_LOADER
1967 The loader can use memory that is present but has been hidden from
1968 Linux using the kernel command line option "mem=xxMB". It's up to
1969 you to ensure the amount you put in the option and the space your
1970 program requires is less or equal to the amount physically present.
1972 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1973 config MIPS_VPE_APSP_API
1974 bool "Enable support for AP/SP API (RTLX)"
1975 depends on MIPS_VPE_LOADER
1979 bool "MIPS CMP framework support"
1980 depends on SYS_SUPPORTS_MIPS_CMP
1982 select SYS_SUPPORTS_SMP
1983 select SYS_SUPPORTS_SCHED_SMT if SMP
1984 select WEAK_ORDERING
1987 This is a placeholder option for the GCMP work. It will need to
1988 be handled differently...
1990 config SB1_PASS_1_WORKAROUNDS
1992 depends on CPU_SB1_PASS_1
1995 config SB1_PASS_2_WORKAROUNDS
1997 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2000 config SB1_PASS_2_1_WORKAROUNDS
2002 depends on CPU_SB1 && CPU_SB1_PASS_2
2006 config 64BIT_PHYS_ADDR
2009 config ARCH_PHYS_ADDR_T_64BIT
2010 def_bool 64BIT_PHYS_ADDR
2012 config CPU_HAS_SMARTMIPS
2013 depends on SYS_SUPPORTS_SMARTMIPS
2014 bool "Support for the SmartMIPS ASE"
2016 SmartMIPS is a extension of the MIPS32 architecture aimed at
2017 increased security at both hardware and software level for
2018 smartcards. Enabling this option will allow proper use of the
2019 SmartMIPS instructions by Linux applications. However a kernel with
2020 this option will not work on a MIPS core without SmartMIPS core. If
2021 you don't know you probably don't have SmartMIPS and should say N
2024 config CPU_MICROMIPS
2025 depends on SYS_SUPPORTS_MICROMIPS
2026 bool "Build kernel using microMIPS ISA"
2028 When this option is enabled the kernel will be built using the
2038 # Vectored interrupt mode is an R2 feature
2040 config CPU_MIPSR2_IRQ_VI
2044 # Extended interrupt mode is an R2 feature
2046 config CPU_MIPSR2_IRQ_EI
2051 depends on !CPU_R3000
2057 config CPU_DADDI_WORKAROUNDS
2060 config CPU_R4000_WORKAROUNDS
2062 select CPU_R4400_WORKAROUNDS
2064 config CPU_R4400_WORKAROUNDS
2068 # - Highmem only makes sense for the 32-bit kernel.
2069 # - The current highmem code will only work properly on physically indexed
2070 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2071 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2072 # moment we protect the user and offer the highmem option only on machines
2073 # where it's known to be safe. This will not offer highmem on a few systems
2074 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2075 # indexed CPUs but we're playing safe.
2076 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2077 # know they might have memory configurations that could make use of highmem
2081 bool "High Memory Support"
2082 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2084 config CPU_SUPPORTS_HIGHMEM
2087 config SYS_SUPPORTS_HIGHMEM
2090 config SYS_SUPPORTS_SMARTMIPS
2093 config SYS_SUPPORTS_MICROMIPS
2096 config ARCH_FLATMEM_ENABLE
2098 depends on !NUMA && !CPU_LOONGSON2
2100 config ARCH_DISCONTIGMEM_ENABLE
2102 default y if SGI_IP27
2104 Say Y to support efficient handling of discontiguous physical memory,
2105 for architectures which are either NUMA (Non-Uniform Memory Access)
2106 or have huge holes in the physical address space for other reasons.
2107 See <file:Documentation/vm/numa> for more.
2109 config ARCH_SPARSEMEM_ENABLE
2111 select SPARSEMEM_STATIC
2115 depends on SYS_SUPPORTS_NUMA
2117 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2118 Access). This option improves performance on systems with more
2119 than two nodes; on two node systems it is generally better to
2120 leave it disabled; on single node systems disable this option
2123 config SYS_SUPPORTS_NUMA
2129 depends on NEED_MULTIPLE_NODES
2131 config HW_PERF_EVENTS
2132 bool "Enable hardware performance counter support for perf events"
2133 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2136 Enable hardware performance counter support for perf events. If
2137 disabled, perf events will use software events only.
2142 bool "Multi-Processing support"
2143 depends on SYS_SUPPORTS_SMP
2144 select USE_GENERIC_SMP_HELPERS
2146 This enables support for systems with more than one CPU. If you have
2147 a system with only one CPU, like most personal computers, say N. If
2148 you have a system with more than one CPU, say Y.
2150 If you say N here, the kernel will run on single and multiprocessor
2151 machines, but will use only one CPU of a multiprocessor machine. If
2152 you say Y here, the kernel will run on many, but not all,
2153 singleprocessor machines. On a singleprocessor machine, the kernel
2154 will run faster if you say N here.
2156 People using multiprocessor machines who say Y here should also say
2157 Y to "Enhanced Real Time Clock Support", below.
2159 See also the SMP-HOWTO available at
2160 <http://www.tldp.org/docs.html#howto>.
2162 If you don't know what to do here, say N.
2167 config SYS_SUPPORTS_MIPS_CMP
2170 config SYS_SUPPORTS_SMP
2173 config NR_CPUS_DEFAULT_4
2176 config NR_CPUS_DEFAULT_8
2179 config NR_CPUS_DEFAULT_16
2182 config NR_CPUS_DEFAULT_32
2185 config NR_CPUS_DEFAULT_64
2189 int "Maximum number of CPUs (2-64)"
2192 default "4" if NR_CPUS_DEFAULT_4
2193 default "8" if NR_CPUS_DEFAULT_8
2194 default "16" if NR_CPUS_DEFAULT_16
2195 default "32" if NR_CPUS_DEFAULT_32
2196 default "64" if NR_CPUS_DEFAULT_64
2198 This allows you to specify the maximum number of CPUs which this
2199 kernel will support. The maximum supported value is 32 for 32-bit
2200 kernel and 64 for 64-bit kernels; the minimum value which makes
2201 sense is 1 for Qemu (useful only for kernel debugging purposes)
2202 and 2 for all others.
2204 This is purely to save memory - each supported CPU adds
2205 approximately eight kilobytes to the kernel image. For best
2206 performance should round up your number of processors to the next
2209 config MIPS_PERF_SHARED_TC_COUNTERS
2213 # Timer Interrupt Frequency Configuration
2217 prompt "Timer frequency"
2220 Allows the configuration of the timer frequency.
2223 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2226 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2229 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2232 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2235 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2245 config SYS_SUPPORTS_48HZ
2248 config SYS_SUPPORTS_100HZ
2251 config SYS_SUPPORTS_128HZ
2254 config SYS_SUPPORTS_250HZ
2257 config SYS_SUPPORTS_256HZ
2260 config SYS_SUPPORTS_1000HZ
2263 config SYS_SUPPORTS_1024HZ
2266 config SYS_SUPPORTS_ARBIT_HZ
2268 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2269 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2270 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2271 !SYS_SUPPORTS_1024HZ
2276 default 100 if HZ_100
2277 default 128 if HZ_128
2278 default 250 if HZ_250
2279 default 256 if HZ_256
2280 default 1000 if HZ_1000
2281 default 1024 if HZ_1024
2283 source "kernel/Kconfig.preempt"
2286 bool "Kexec system call"
2288 kexec is a system call that implements the ability to shutdown your
2289 current kernel, and to start another kernel. It is like a reboot
2290 but it is independent of the system firmware. And like a reboot
2291 you can start any kernel with it, not just Linux.
2293 The name comes from the similarity to the exec system call.
2295 It is an ongoing process to be certain the hardware in a machine
2296 is properly shutdown, so do not be surprised if this code does not
2297 initially work for you. As of this writing the exact hardware
2298 interface is strongly in flux, so no good recommendation can be
2302 bool "Kernel crash dumps"
2304 Generate crash dump after being started by kexec.
2305 This should be normally only set in special crash dump kernels
2306 which are loaded in the main kernel with kexec-tools into
2307 a specially reserved region and then later executed after
2308 a crash by kdump/kexec. The crash dump kernel must be compiled
2309 to a memory address not used by the main kernel or firmware using
2312 config PHYSICAL_START
2313 hex "Physical address where the kernel is loaded"
2314 default "0xffffffff84000000" if 64BIT
2315 default "0x84000000" if 32BIT
2316 depends on CRASH_DUMP
2318 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2319 If you plan to use kernel for capturing the crash dump change
2320 this value to start of the reserved region (the "X" value as
2321 specified in the "crashkernel=YM@XM" command line boot parameter
2322 passed to the panic-ed kernel).
2325 bool "Enable seccomp to safely compute untrusted bytecode"
2329 This kernel feature is useful for number crunching applications
2330 that may need to compute untrusted bytecode during their
2331 execution. By using pipes or other transports made available to
2332 the process as file descriptors supporting the read/write
2333 syscalls, it's possible to isolate those applications in
2334 their own address space using seccomp. Once seccomp is
2335 enabled via /proc/<pid>/seccomp, it cannot be disabled
2336 and the task is only allowed to execute a few safe syscalls
2337 defined by each seccomp mode.
2339 If unsure, say Y. Only embedded should say N here.
2341 config CC_STACKPROTECTOR
2342 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2344 This option turns on the -fstack-protector GCC feature. This
2345 feature puts, at the beginning of functions, a canary value on
2346 the stack just before the return address, and validates
2347 the value just before actually returning. Stack based buffer
2348 overflows (that need to overwrite this return address) now also
2349 overwrite the canary, which gets detected and the attack is then
2350 neutralized via a kernel panic.
2352 This feature requires gcc version 4.2 or above.
2357 select OF_EARLY_FLATTREE
2362 config LOCKDEP_SUPPORT
2366 config STACKTRACE_SUPPORT
2370 source "init/Kconfig"
2372 source "kernel/Kconfig.freezer"
2374 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2382 bool "Support for PCI controller"
2383 depends on HW_HAS_PCI
2385 select NO_GENERIC_PCI_IOPORT_MAP
2387 Find out whether you have a PCI motherboard. PCI is the name of a
2388 bus system, i.e. the way the CPU talks to the other stuff inside
2389 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2395 source "drivers/pci/Kconfig"
2397 source "drivers/pci/pcie/Kconfig"
2400 # ISA support is now enabled via select. Too many systems still have the one
2401 # or other ISA chip on the board that users don't know about so don't expect
2402 # users to choose the right thing ...
2409 depends on HW_HAS_EISA
2411 select GENERIC_ISA_DMA
2413 The Extended Industry Standard Architecture (EISA) bus was
2414 developed as an open alternative to the IBM MicroChannel bus.
2416 The EISA bus provided some of the features of the IBM MicroChannel
2417 bus while maintaining backward compatibility with cards made for
2418 the older ISA bus. The EISA bus saw limited use between 1988 and
2419 1995 when it was made obsolete by the PCI bus.
2421 Say Y here if you are building a kernel for an EISA-based machine.
2425 source "drivers/eisa/Kconfig"
2428 bool "TURBOchannel support"
2429 depends on MACH_DECSTATION
2431 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2432 processors. TURBOchannel programming specifications are available
2434 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2436 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2437 Linux driver support status is documented at:
2438 <http://www.linux-mips.org/wiki/DECstation>
2448 select MIPS_EXTERNAL_TIMER
2456 source "drivers/pcmcia/Kconfig"
2458 source "drivers/pci/hotplug/Kconfig"
2461 bool "RapidIO support"
2465 If you say Y here, the kernel will include drivers and
2466 infrastructure code to support RapidIO interconnect devices.
2468 source "drivers/rapidio/Kconfig"
2472 menu "Executable file formats"
2474 source "fs/Kconfig.binfmt"
2479 config MIPS32_COMPAT
2480 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2483 Select this option if you want Linux/MIPS 32-bit binary
2484 compatibility. Since all software available for Linux/MIPS is
2485 currently 32-bit you should say Y here.
2489 depends on MIPS32_COMPAT
2490 select ARCH_WANT_OLD_COMPAT_IPC
2493 config SYSVIPC_COMPAT
2495 depends on COMPAT && SYSVIPC
2499 bool "Kernel support for o32 binaries"
2500 depends on MIPS32_COMPAT
2502 Select this option if you want to run o32 binaries. These are pure
2503 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2504 existing binaries are in this format.
2509 bool "Kernel support for n32 binaries"
2510 depends on MIPS32_COMPAT
2512 Select this option if you want to run n32 binaries. These are
2513 64-bit binaries using 32-bit quantities for addressing and certain
2514 data that would normally be 64-bit. They are used in special
2521 default y if MIPS32_O32 || MIPS32_N32
2525 menu "Power management options"
2527 config ARCH_HIBERNATION_POSSIBLE
2529 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2531 config ARCH_SUSPEND_POSSIBLE
2533 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2535 source "kernel/power/Kconfig"
2539 config MIPS_EXTERNAL_TIMER
2542 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2543 menu "CPU Power Management"
2544 source "drivers/cpufreq/Kconfig"
2548 source "net/Kconfig"
2550 source "drivers/Kconfig"
2552 source "drivers/firmware/Kconfig"
2556 source "arch/mips/Kconfig.debug"
2558 source "security/Kconfig"
2560 source "crypto/Kconfig"
2562 source "lib/Kconfig"
2564 source "arch/mips/kvm/Kconfig"