4 select HAVE_CONTEXT_TRACKING
5 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select HAVE_DEBUG_KMEMLEAK
21 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
22 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
23 select RTC_LIB if !MACH_LOONGSON
24 select GENERIC_ATOMIC64 if !64BIT
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
27 select HAVE_DMA_API_DEBUG
28 select HAVE_GENERIC_HARDIRQS
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_PCI_IOMAP
32 select HAVE_ARCH_JUMP_LABEL
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select IRQ_FORCED_THREADING
36 select HAVE_MEMBLOCK_NODE_MAP
37 select ARCH_DISCARD_MEMBLOCK
38 select GENERIC_SMP_IDLE_THREAD
39 select BUILDTIME_EXTABLE_SORT
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE
42 select HAVE_MOD_ARCH_SPECIFIC
44 select MODULES_USE_ELF_REL if MODULES
45 select MODULES_USE_ELF_RELA if MODULES && 64BIT
46 select CLONE_BACKWARDS
47 select HAVE_DEBUG_STACKOVERFLOW
49 menu "Machine selection"
56 bool "Alchemy processor based machines"
57 select 64BIT_PHYS_ADDR
61 select SYS_HAS_CPU_MIPS32_R1
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_APM_EMULATION
64 select ARCH_REQUIRE_GPIOLIB
65 select SYS_SUPPORTS_ZBOOT
66 select USB_ARCH_HAS_OHCI
67 select USB_ARCH_HAS_EHCI
70 bool "Texas Instruments AR7"
72 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select SYS_SUPPORTS_ZBOOT_UART16550
83 select ARCH_REQUIRE_GPIOLIB
87 Support for the Texas Instruments AR7 System-on-a-Chip
88 family: TNETD7100, 7200 and 7300.
91 bool "Atheros AR71XX/AR724X/AR913X based boards"
92 select ARCH_REQUIRE_GPIOLIB
96 select DMA_NONCOHERENT
100 select SYS_HAS_CPU_MIPS32_R2
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_BIG_ENDIAN
105 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
108 bool "Broadcom BCM47XX based boards"
109 select ARCH_WANT_OPTIONAL_GPIOLIB
113 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_MIPS32_R1
118 select NO_EXCEPT_FILL
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121 select SYS_HAS_EARLY_PRINTK
123 Support for BCM47XX based boards
126 bool "Broadcom BCM63XX based boards"
130 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_MIPS32_R1
133 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
134 select NR_CPUS_DEFAULT_2
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
450 bool "SGI IP22 (Indy/Indigo2)"
456 select DEFAULT_SGI_PARTITION
457 select DMA_NONCOHERENT
461 select IP22_CPU_SCACHE
463 select GENERIC_ISA_DMA_SUPPORT_BROKEN
465 select SGI_HAS_INDYDOG
471 select SYS_HAS_CPU_R4X00
472 select SYS_HAS_CPU_R5000
474 # Disable EARLY_PRINTK for now since it leads to overwritten prom
475 # memory during early boot on some machines.
477 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
478 # for a more details discussion
480 # select SYS_HAS_EARLY_PRINTK
481 select SYS_SUPPORTS_32BIT_KERNEL
482 select SYS_SUPPORTS_64BIT_KERNEL
483 select SYS_SUPPORTS_BIG_ENDIAN
485 This are the SGI Indy, Challenge S and Indigo2, as well as certain
486 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
487 that runs on these, say Y here.
490 bool "SGI IP27 (Origin200/2000)"
494 select DEFAULT_SGI_PARTITION
496 select SYS_HAS_EARLY_PRINTK
498 select NR_CPUS_DEFAULT_64
499 select SYS_HAS_CPU_R10000
500 select SYS_SUPPORTS_64BIT_KERNEL
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_NUMA
503 select SYS_SUPPORTS_SMP
505 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
506 workstations. To compile a Linux kernel that runs on these, say Y
510 bool "SGI IP28 (Indigo2 R10k)"
516 select DEFAULT_SGI_PARTITION
517 select DMA_NONCOHERENT
518 select GENERIC_ISA_DMA_SUPPORT_BROKEN
524 select SGI_HAS_INDYDOG
530 select SYS_HAS_CPU_R10000
532 # Disable EARLY_PRINTK for now since it leads to overwritten prom
533 # memory during early boot on some machines.
535 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
536 # for a more details discussion
538 # select SYS_HAS_EARLY_PRINTK
539 select SYS_SUPPORTS_64BIT_KERNEL
540 select SYS_SUPPORTS_BIG_ENDIAN
542 This is the SGI Indigo2 with R10000 processor. To compile a Linux
543 kernel that runs on these, say Y here.
552 select DMA_NONCOHERENT
555 select R5000_CPU_SCACHE
556 select RM7000_CPU_SCACHE
557 select SYS_HAS_CPU_R5000
558 select SYS_HAS_CPU_R10000 if BROKEN
559 select SYS_HAS_CPU_RM7000
560 select SYS_HAS_CPU_NEVADA
561 select SYS_SUPPORTS_64BIT_KERNEL
562 select SYS_SUPPORTS_BIG_ENDIAN
564 If you want this kernel to run on SGI O2 workstation, say Y here.
567 bool "Sibyte BCM91120C-CRhine"
570 select SIBYTE_BCM1120
572 select SYS_HAS_CPU_SB1
573 select SYS_SUPPORTS_BIG_ENDIAN
574 select SYS_SUPPORTS_LITTLE_ENDIAN
577 bool "Sibyte BCM91120x-Carmel"
580 select SIBYTE_BCM1120
582 select SYS_HAS_CPU_SB1
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_LITTLE_ENDIAN
587 bool "Sibyte BCM91125C-CRhone"
590 select SIBYTE_BCM1125
592 select SYS_HAS_CPU_SB1
593 select SYS_SUPPORTS_BIG_ENDIAN
594 select SYS_SUPPORTS_HIGHMEM
595 select SYS_SUPPORTS_LITTLE_ENDIAN
598 bool "Sibyte BCM91125E-Rhone"
601 select SIBYTE_BCM1125H
603 select SYS_HAS_CPU_SB1
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_LITTLE_ENDIAN
608 bool "Sibyte BCM91250A-SWARM"
611 select HAVE_PATA_PLATFORM
612 select NR_CPUS_DEFAULT_2
615 select SYS_HAS_CPU_SB1
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_HIGHMEM
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select ZONE_DMA32 if 64BIT
621 config SIBYTE_LITTLESUR
622 bool "Sibyte BCM91250C2-LittleSur"
625 select HAVE_PATA_PLATFORM
626 select NR_CPUS_DEFAULT_2
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"
638 select NR_CPUS_DEFAULT_2
641 select SYS_HAS_CPU_SB1
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select SYS_SUPPORTS_LITTLE_ENDIAN
646 bool "Sibyte BCM91480B-BigSur"
649 select NR_CPUS_DEFAULT_4
650 select SIBYTE_BCM1x80
652 select SYS_HAS_CPU_SB1
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select SYS_SUPPORTS_HIGHMEM
655 select SYS_SUPPORTS_LITTLE_ENDIAN
656 select ZONE_DMA32 if 64BIT
659 bool "SNI RM200/300/400"
660 select FW_ARC if CPU_LITTLE_ENDIAN
661 select FW_ARC32 if CPU_LITTLE_ENDIAN
662 select FW_SNIPROM if CPU_BIG_ENDIAN
663 select ARCH_MAY_HAVE_PC_FDC
667 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
668 select DMA_NONCOHERENT
669 select GENERIC_ISA_DMA
670 select HAVE_PCSPKR_PLATFORM
677 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
678 select SYS_HAS_CPU_R4X00
679 select SYS_HAS_CPU_R5000
680 select SYS_HAS_CPU_R10000
681 select R5000_CPU_SCACHE
682 select SYS_HAS_EARLY_PRINTK
683 select SYS_SUPPORTS_32BIT_KERNEL
684 select SYS_SUPPORTS_64BIT_KERNEL
685 select SYS_SUPPORTS_BIG_ENDIAN
686 select SYS_SUPPORTS_HIGHMEM
687 select SYS_SUPPORTS_LITTLE_ENDIAN
689 The SNI RM200/300/400 are MIPS-based machines manufactured by
690 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
691 Technology and now in turn merged with Fujitsu. Say Y here to
692 support this machine type.
695 bool "Toshiba TX39 series based machines"
698 bool "Toshiba TX49 series based machines"
700 config MIKROTIK_RB532
701 bool "Mikrotik RB532 boards"
704 select DMA_NONCOHERENT
707 select SYS_HAS_CPU_MIPS32_R1
708 select SYS_SUPPORTS_32BIT_KERNEL
709 select SYS_SUPPORTS_LITTLE_ENDIAN
712 select ARCH_REQUIRE_GPIOLIB
714 Support the Mikrotik(tm) RouterBoard 532 series,
715 based on the IDT RC32434 SoC.
717 config CAVIUM_OCTEON_SOC
718 bool "Cavium Networks Octeon SoC based boards"
720 select 64BIT_PHYS_ADDR
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
725 select SYS_SUPPORTS_HOTPLUG_CPU
726 select SYS_HAS_EARLY_PRINTK
727 select SYS_HAS_CPU_CAVIUM_OCTEON
731 select USB_ARCH_HAS_OHCI
732 select USB_ARCH_HAS_EHCI
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
1863 select NR_CPUS_DEFAULT_2
1865 select SYS_SUPPORTS_SCHED_SMT if SMP
1866 select SYS_SUPPORTS_SMP
1868 select MIPS_PERF_SHARED_TC_COUNTERS
1870 This is a kernel model which is known a VSMP but lately has been
1871 marketesed into SMVP.
1872 Virtual SMP uses the processor's VPEs to implement virtual
1873 processors. In currently available configuration of the 34K processor
1874 this allows for a dual processor. Both processors will share the same
1875 primary caches; each will obtain the half of the TLB for it's own
1876 exclusive use. For a layman this model can be described as similar to
1877 what Intel calls Hyperthreading.
1879 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1882 bool "SMTC: Use all TCs on all VPEs for SMP"
1883 depends on CPU_MIPS32_R2
1884 #depends on CPU_MIPS64_R2 # once there is hardware ...
1885 depends on SYS_SUPPORTS_MULTITHREADING
1886 select CPU_MIPSR2_IRQ_VI
1887 select CPU_MIPSR2_IRQ_EI
1889 select NR_CPUS_DEFAULT_8
1891 select SYS_SUPPORTS_SMP
1894 This is a kernel model which is known a SMTC or lately has been
1895 marketesed into SMVP.
1896 is presenting the available TC's of the core as processors to Linux.
1897 On currently available 34K processors this means a Linux system will
1898 see up to 5 processors. The implementation of the SMTC kernel differs
1899 significantly from VSMP and cannot efficiently coexist in the same
1900 kernel binary so the choice between VSMP and SMTC is a compile time
1903 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1911 bool "SMT (multithreading) scheduler support"
1912 depends on SYS_SUPPORTS_SCHED_SMT
1915 SMT scheduler support improves the CPU scheduler's decision making
1916 when dealing with MIPS MT enabled cores at a cost of slightly
1917 increased overhead in some places. If unsure say N here.
1919 config SYS_SUPPORTS_SCHED_SMT
1922 config SYS_SUPPORTS_MULTITHREADING
1925 config MIPS_MT_FPAFF
1926 bool "Dynamic FPU affinity for FP-intensive threads"
1928 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1930 config MIPS_VPE_LOADER
1931 bool "VPE loader support."
1932 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1933 select CPU_MIPSR2_IRQ_VI
1934 select CPU_MIPSR2_IRQ_EI
1937 Includes a loader for loading an elf relocatable object
1938 onto another VPE and running it.
1940 config MIPS_MT_SMTC_IM_BACKSTOP
1941 bool "Use per-TC register bits as backstop for inhibited IM bits"
1942 depends on MIPS_MT_SMTC
1945 To support multiple TC microthreads acting as "CPUs" within
1946 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1947 during interrupt handling. To support legacy drivers and interrupt
1948 controller management code, SMTC has a "backstop" to track and
1949 if necessary restore the interrupt mask. This has some performance
1950 impact on interrupt service overhead.
1952 config MIPS_MT_SMTC_IRQAFF
1953 bool "Support IRQ affinity API"
1954 depends on MIPS_MT_SMTC
1957 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1958 for SMTC Linux kernel. Requires platform support, of which
1959 an example can be found in the MIPS kernel i8259 and Malta
1960 platform code. Adds some overhead to interrupt dispatch, and
1961 should be used only if you know what you are doing.
1963 config MIPS_VPE_LOADER_TOM
1964 bool "Load VPE program into memory hidden from linux"
1965 depends on MIPS_VPE_LOADER
1968 The loader can use memory that is present but has been hidden from
1969 Linux using the kernel command line option "mem=xxMB". It's up to
1970 you to ensure the amount you put in the option and the space your
1971 program requires is less or equal to the amount physically present.
1973 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1974 config MIPS_VPE_APSP_API
1975 bool "Enable support for AP/SP API (RTLX)"
1976 depends on MIPS_VPE_LOADER
1980 bool "MIPS CMP framework support"
1981 depends on SYS_SUPPORTS_MIPS_CMP
1983 select SYS_SUPPORTS_SMP
1984 select SYS_SUPPORTS_SCHED_SMT if SMP
1985 select WEAK_ORDERING
1988 This is a placeholder option for the GCMP work. It will need to
1989 be handled differently...
1991 config SB1_PASS_1_WORKAROUNDS
1993 depends on CPU_SB1_PASS_1
1996 config SB1_PASS_2_WORKAROUNDS
1998 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2001 config SB1_PASS_2_1_WORKAROUNDS
2003 depends on CPU_SB1 && CPU_SB1_PASS_2
2007 config 64BIT_PHYS_ADDR
2010 config ARCH_PHYS_ADDR_T_64BIT
2011 def_bool 64BIT_PHYS_ADDR
2013 config CPU_HAS_SMARTMIPS
2014 depends on SYS_SUPPORTS_SMARTMIPS
2015 bool "Support for the SmartMIPS ASE"
2017 SmartMIPS is a extension of the MIPS32 architecture aimed at
2018 increased security at both hardware and software level for
2019 smartcards. Enabling this option will allow proper use of the
2020 SmartMIPS instructions by Linux applications. However a kernel with
2021 this option will not work on a MIPS core without SmartMIPS core. If
2022 you don't know you probably don't have SmartMIPS and should say N
2025 config CPU_MICROMIPS
2026 depends on SYS_SUPPORTS_MICROMIPS
2027 bool "Build kernel using microMIPS ISA"
2029 When this option is enabled the kernel will be built using the
2039 # Vectored interrupt mode is an R2 feature
2041 config CPU_MIPSR2_IRQ_VI
2045 # Extended interrupt mode is an R2 feature
2047 config CPU_MIPSR2_IRQ_EI
2052 depends on !CPU_R3000
2058 config CPU_DADDI_WORKAROUNDS
2061 config CPU_R4000_WORKAROUNDS
2063 select CPU_R4400_WORKAROUNDS
2065 config CPU_R4400_WORKAROUNDS
2069 # - Highmem only makes sense for the 32-bit kernel.
2070 # - The current highmem code will only work properly on physically indexed
2071 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2072 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2073 # moment we protect the user and offer the highmem option only on machines
2074 # where it's known to be safe. This will not offer highmem on a few systems
2075 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2076 # indexed CPUs but we're playing safe.
2077 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2078 # know they might have memory configurations that could make use of highmem
2082 bool "High Memory Support"
2083 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2085 config CPU_SUPPORTS_HIGHMEM
2088 config SYS_SUPPORTS_HIGHMEM
2091 config SYS_SUPPORTS_SMARTMIPS
2094 config SYS_SUPPORTS_MICROMIPS
2097 config ARCH_FLATMEM_ENABLE
2099 depends on !NUMA && !CPU_LOONGSON2
2101 config ARCH_DISCONTIGMEM_ENABLE
2103 default y if SGI_IP27
2105 Say Y to support efficient handling of discontiguous physical memory,
2106 for architectures which are either NUMA (Non-Uniform Memory Access)
2107 or have huge holes in the physical address space for other reasons.
2108 See <file:Documentation/vm/numa> for more.
2110 config ARCH_SPARSEMEM_ENABLE
2112 select SPARSEMEM_STATIC
2116 depends on SYS_SUPPORTS_NUMA
2118 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2119 Access). This option improves performance on systems with more
2120 than two nodes; on two node systems it is generally better to
2121 leave it disabled; on single node systems disable this option
2124 config SYS_SUPPORTS_NUMA
2130 depends on NEED_MULTIPLE_NODES
2132 config HW_PERF_EVENTS
2133 bool "Enable hardware performance counter support for perf events"
2134 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2137 Enable hardware performance counter support for perf events. If
2138 disabled, perf events will use software events only.
2143 bool "Multi-Processing support"
2144 depends on SYS_SUPPORTS_SMP
2145 select USE_GENERIC_SMP_HELPERS
2147 This enables support for systems with more than one CPU. If you have
2148 a system with only one CPU, like most personal computers, say N. If
2149 you have a system with more than one CPU, say Y.
2151 If you say N here, the kernel will run on single and multiprocessor
2152 machines, but will use only one CPU of a multiprocessor machine. If
2153 you say Y here, the kernel will run on many, but not all,
2154 singleprocessor machines. On a singleprocessor machine, the kernel
2155 will run faster if you say N here.
2157 People using multiprocessor machines who say Y here should also say
2158 Y to "Enhanced Real Time Clock Support", below.
2160 See also the SMP-HOWTO available at
2161 <http://www.tldp.org/docs.html#howto>.
2163 If you don't know what to do here, say N.
2168 config SYS_SUPPORTS_MIPS_CMP
2171 config SYS_SUPPORTS_SMP
2174 config NR_CPUS_DEFAULT_1
2177 config NR_CPUS_DEFAULT_2
2180 config NR_CPUS_DEFAULT_4
2183 config NR_CPUS_DEFAULT_8
2186 config NR_CPUS_DEFAULT_16
2189 config NR_CPUS_DEFAULT_32
2192 config NR_CPUS_DEFAULT_64
2196 int "Maximum number of CPUs (2-64)"
2197 range 1 64 if NR_CPUS_DEFAULT_1
2199 default "1" if NR_CPUS_DEFAULT_1
2200 default "2" if NR_CPUS_DEFAULT_2
2201 default "4" if NR_CPUS_DEFAULT_4
2202 default "8" if NR_CPUS_DEFAULT_8
2203 default "16" if NR_CPUS_DEFAULT_16
2204 default "32" if NR_CPUS_DEFAULT_32
2205 default "64" if NR_CPUS_DEFAULT_64
2207 This allows you to specify the maximum number of CPUs which this
2208 kernel will support. The maximum supported value is 32 for 32-bit
2209 kernel and 64 for 64-bit kernels; the minimum value which makes
2210 sense is 1 for Qemu (useful only for kernel debugging purposes)
2211 and 2 for all others.
2213 This is purely to save memory - each supported CPU adds
2214 approximately eight kilobytes to the kernel image. For best
2215 performance should round up your number of processors to the next
2218 config MIPS_PERF_SHARED_TC_COUNTERS
2222 # Timer Interrupt Frequency Configuration
2226 prompt "Timer frequency"
2229 Allows the configuration of the timer frequency.
2232 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2235 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2244 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2247 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2250 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2254 config SYS_SUPPORTS_48HZ
2257 config SYS_SUPPORTS_100HZ
2260 config SYS_SUPPORTS_128HZ
2263 config SYS_SUPPORTS_250HZ
2266 config SYS_SUPPORTS_256HZ
2269 config SYS_SUPPORTS_1000HZ
2272 config SYS_SUPPORTS_1024HZ
2275 config SYS_SUPPORTS_ARBIT_HZ
2277 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2278 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2279 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2280 !SYS_SUPPORTS_1024HZ
2285 default 100 if HZ_100
2286 default 128 if HZ_128
2287 default 250 if HZ_250
2288 default 256 if HZ_256
2289 default 1000 if HZ_1000
2290 default 1024 if HZ_1024
2292 source "kernel/Kconfig.preempt"
2295 bool "Kexec system call"
2297 kexec is a system call that implements the ability to shutdown your
2298 current kernel, and to start another kernel. It is like a reboot
2299 but it is independent of the system firmware. And like a reboot
2300 you can start any kernel with it, not just Linux.
2302 The name comes from the similarity to the exec system call.
2304 It is an ongoing process to be certain the hardware in a machine
2305 is properly shutdown, so do not be surprised if this code does not
2306 initially work for you. As of this writing the exact hardware
2307 interface is strongly in flux, so no good recommendation can be
2311 bool "Kernel crash dumps"
2313 Generate crash dump after being started by kexec.
2314 This should be normally only set in special crash dump kernels
2315 which are loaded in the main kernel with kexec-tools into
2316 a specially reserved region and then later executed after
2317 a crash by kdump/kexec. The crash dump kernel must be compiled
2318 to a memory address not used by the main kernel or firmware using
2321 config PHYSICAL_START
2322 hex "Physical address where the kernel is loaded"
2323 default "0xffffffff84000000" if 64BIT
2324 default "0x84000000" if 32BIT
2325 depends on CRASH_DUMP
2327 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2328 If you plan to use kernel for capturing the crash dump change
2329 this value to start of the reserved region (the "X" value as
2330 specified in the "crashkernel=YM@XM" command line boot parameter
2331 passed to the panic-ed kernel).
2334 bool "Enable seccomp to safely compute untrusted bytecode"
2338 This kernel feature is useful for number crunching applications
2339 that may need to compute untrusted bytecode during their
2340 execution. By using pipes or other transports made available to
2341 the process as file descriptors supporting the read/write
2342 syscalls, it's possible to isolate those applications in
2343 their own address space using seccomp. Once seccomp is
2344 enabled via /proc/<pid>/seccomp, it cannot be disabled
2345 and the task is only allowed to execute a few safe syscalls
2346 defined by each seccomp mode.
2348 If unsure, say Y. Only embedded should say N here.
2350 config CC_STACKPROTECTOR
2351 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2353 This option turns on the -fstack-protector GCC feature. This
2354 feature puts, at the beginning of functions, a canary value on
2355 the stack just before the return address, and validates
2356 the value just before actually returning. Stack based buffer
2357 overflows (that need to overwrite this return address) now also
2358 overwrite the canary, which gets detected and the attack is then
2359 neutralized via a kernel panic.
2361 This feature requires gcc version 4.2 or above.
2366 select OF_EARLY_FLATTREE
2371 config LOCKDEP_SUPPORT
2375 config STACKTRACE_SUPPORT
2379 source "init/Kconfig"
2381 source "kernel/Kconfig.freezer"
2383 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2391 bool "Support for PCI controller"
2392 depends on HW_HAS_PCI
2394 select NO_GENERIC_PCI_IOPORT_MAP
2396 Find out whether you have a PCI motherboard. PCI is the name of a
2397 bus system, i.e. the way the CPU talks to the other stuff inside
2398 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2404 source "drivers/pci/Kconfig"
2406 source "drivers/pci/pcie/Kconfig"
2409 # ISA support is now enabled via select. Too many systems still have the one
2410 # or other ISA chip on the board that users don't know about so don't expect
2411 # users to choose the right thing ...
2418 depends on HW_HAS_EISA
2420 select GENERIC_ISA_DMA
2422 The Extended Industry Standard Architecture (EISA) bus was
2423 developed as an open alternative to the IBM MicroChannel bus.
2425 The EISA bus provided some of the features of the IBM MicroChannel
2426 bus while maintaining backward compatibility with cards made for
2427 the older ISA bus. The EISA bus saw limited use between 1988 and
2428 1995 when it was made obsolete by the PCI bus.
2430 Say Y here if you are building a kernel for an EISA-based machine.
2434 source "drivers/eisa/Kconfig"
2437 bool "TURBOchannel support"
2438 depends on MACH_DECSTATION
2440 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2441 processors. TURBOchannel programming specifications are available
2443 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2445 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2446 Linux driver support status is documented at:
2447 <http://www.linux-mips.org/wiki/DECstation>
2457 select MIPS_EXTERNAL_TIMER
2465 source "drivers/pcmcia/Kconfig"
2467 source "drivers/pci/hotplug/Kconfig"
2470 bool "RapidIO support"
2474 If you say Y here, the kernel will include drivers and
2475 infrastructure code to support RapidIO interconnect devices.
2477 source "drivers/rapidio/Kconfig"
2481 menu "Executable file formats"
2483 source "fs/Kconfig.binfmt"
2488 config MIPS32_COMPAT
2489 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2492 Select this option if you want Linux/MIPS 32-bit binary
2493 compatibility. Since all software available for Linux/MIPS is
2494 currently 32-bit you should say Y here.
2498 depends on MIPS32_COMPAT
2499 select ARCH_WANT_OLD_COMPAT_IPC
2502 config SYSVIPC_COMPAT
2504 depends on COMPAT && SYSVIPC
2508 bool "Kernel support for o32 binaries"
2509 depends on MIPS32_COMPAT
2511 Select this option if you want to run o32 binaries. These are pure
2512 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2513 existing binaries are in this format.
2518 bool "Kernel support for n32 binaries"
2519 depends on MIPS32_COMPAT
2521 Select this option if you want to run n32 binaries. These are
2522 64-bit binaries using 32-bit quantities for addressing and certain
2523 data that would normally be 64-bit. They are used in special
2530 default y if MIPS32_O32 || MIPS32_N32
2534 menu "Power management options"
2536 config ARCH_HIBERNATION_POSSIBLE
2538 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2540 config ARCH_SUSPEND_POSSIBLE
2542 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2544 source "kernel/power/Kconfig"
2548 config MIPS_EXTERNAL_TIMER
2551 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2552 menu "CPU Power Management"
2553 source "drivers/cpufreq/Kconfig"
2557 source "net/Kconfig"
2559 source "drivers/Kconfig"
2561 source "drivers/firmware/Kconfig"
2565 source "arch/mips/Kconfig.debug"
2567 source "security/Kconfig"
2569 source "crypto/Kconfig"
2571 source "lib/Kconfig"
2573 source "arch/mips/kvm/Kconfig"