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
730 select ARCH_SUPPORTS_MSI
732 select USB_ARCH_HAS_OHCI
733 select USB_ARCH_HAS_EHCI
735 select ARCH_REQUIRE_GPIOLIB
737 This option supports all of the Octeon reference boards from Cavium
738 Networks. It builds a kernel that dynamically determines the Octeon
739 CPU type and supports all known board reference implementations.
740 Some of the supported boards are:
747 Say Y here for most Octeon reference boards.
750 bool "Netlogic XLR/XLS based systems"
753 select SYS_HAS_CPU_XLR
754 select SYS_SUPPORTS_SMP
757 select SYS_SUPPORTS_32BIT_KERNEL
758 select SYS_SUPPORTS_64BIT_KERNEL
759 select 64BIT_PHYS_ADDR
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_HIGHMEM
763 select NR_CPUS_DEFAULT_32
767 select ARCH_SUPPORTS_MSI
768 select ZONE_DMA32 if 64BIT
770 select SYS_HAS_EARLY_PRINTK
771 select USB_ARCH_HAS_OHCI if USB_SUPPORT
772 select USB_ARCH_HAS_EHCI if USB_SUPPORT
773 select SYS_SUPPORTS_ZBOOT
774 select SYS_SUPPORTS_ZBOOT_UART16550
776 Support for systems based on Netlogic XLR and XLS processors.
777 Say Y here if you have a XLR or XLS based board.
780 bool "Netlogic XLP based systems"
783 select SYS_HAS_CPU_XLP
784 select SYS_SUPPORTS_SMP
786 select SYS_SUPPORTS_32BIT_KERNEL
787 select SYS_SUPPORTS_64BIT_KERNEL
788 select 64BIT_PHYS_ADDR
789 select SYS_SUPPORTS_BIG_ENDIAN
790 select SYS_SUPPORTS_LITTLE_ENDIAN
791 select SYS_SUPPORTS_HIGHMEM
793 select NR_CPUS_DEFAULT_32
797 select ZONE_DMA32 if 64BIT
799 select SYS_HAS_EARLY_PRINTK
801 select SYS_SUPPORTS_ZBOOT
802 select SYS_SUPPORTS_ZBOOT_UART16550
804 This board is based on Netlogic XLP Processor.
805 Say Y here if you have a XLP based board.
809 source "arch/mips/alchemy/Kconfig"
810 source "arch/mips/ath79/Kconfig"
811 source "arch/mips/bcm47xx/Kconfig"
812 source "arch/mips/bcm63xx/Kconfig"
813 source "arch/mips/jazz/Kconfig"
814 source "arch/mips/jz4740/Kconfig"
815 source "arch/mips/lantiq/Kconfig"
816 source "arch/mips/lasat/Kconfig"
817 source "arch/mips/pmcs-msp71xx/Kconfig"
818 source "arch/mips/powertv/Kconfig"
819 source "arch/mips/ralink/Kconfig"
820 source "arch/mips/sgi-ip27/Kconfig"
821 source "arch/mips/sibyte/Kconfig"
822 source "arch/mips/txx9/Kconfig"
823 source "arch/mips/vr41xx/Kconfig"
824 source "arch/mips/cavium-octeon/Kconfig"
825 source "arch/mips/loongson/Kconfig"
826 source "arch/mips/loongson1/Kconfig"
827 source "arch/mips/netlogic/Kconfig"
831 config RWSEM_GENERIC_SPINLOCK
835 config RWSEM_XCHGADD_ALGORITHM
838 config ARCH_HAS_ILOG2_U32
842 config ARCH_HAS_ILOG2_U64
846 config GENERIC_HWEIGHT
850 config GENERIC_CALIBRATE_DELAY
854 config SCHED_OMIT_FRAME_POINTER
859 # Select some configuration options automatically based on user selections.
864 config ARCH_MAY_HAVE_PC_FDC
910 select ARCH_REQUIRE_GPIOLIB
916 config ARCH_DMA_ADDR_T_64BIT
917 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
922 config DMA_NONCOHERENT
924 select NEED_DMA_MAP_STATE
926 config NEED_DMA_MAP_STATE
929 config SYS_HAS_EARLY_PRINTK
933 bool "Support for hot-pluggable CPUs"
934 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
936 Say Y here to allow turning CPUs off and on. CPUs can be
937 controlled through /sys/devices/system/cpu.
938 (Note: power management support will enable this option
939 automatically on SMP systems. )
940 Say N if you want to disable CPU hotplug.
942 config SYS_SUPPORTS_HOTPLUG_CPU
966 config GENERIC_ISA_DMA
968 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
971 config GENERIC_ISA_DMA_SUPPORT_BROKEN
973 select GENERIC_ISA_DMA
982 # Endianness selection. Sufficiently obscure so many users don't know what to
983 # answer,so we try hard to limit the available choices. Also the use of a
984 # choice statement should be more obvious to the user.
987 prompt "Endianness selection"
989 Some MIPS machines can be configured for either little or big endian
990 byte order. These modes require different kernels and a different
991 Linux distribution. In general there is one preferred byteorder for a
992 particular system but some systems are just as commonly used in the
993 one or the other endianness.
995 config CPU_BIG_ENDIAN
997 depends on SYS_SUPPORTS_BIG_ENDIAN
999 config CPU_LITTLE_ENDIAN
1000 bool "Little endian"
1001 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1008 config SYS_SUPPORTS_APM_EMULATION
1011 config SYS_SUPPORTS_BIG_ENDIAN
1014 config SYS_SUPPORTS_LITTLE_ENDIAN
1017 config SYS_SUPPORTS_HUGETLBFS
1019 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1022 config MIPS_HUGE_TLB_SUPPORT
1023 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1046 config PCI_GT64XXX_PCI0
1049 config NO_EXCEPT_FILL
1056 select DMA_NONCOHERENT
1058 select SWAP_IO_SPACE
1059 select SYS_HAS_CPU_R5500
1060 select SYS_SUPPORTS_32BIT_KERNEL
1061 select SYS_SUPPORTS_64BIT_KERNEL
1062 select SYS_SUPPORTS_BIG_ENDIAN
1069 select DMA_NONCOHERENT
1070 select SYS_HAS_CPU_MIPS32_R2
1071 select SYS_SUPPORTS_32BIT_KERNEL
1072 select SYS_SUPPORTS_LITTLE_ENDIAN
1073 select SYS_SUPPORTS_BIG_ENDIAN
1074 select CPU_MIPSR2_IRQ_VI
1080 config SWAP_IO_SPACE
1083 config SGI_HAS_INDYDOG
1095 config SGI_HAS_ZILOG
1098 config SGI_HAS_I8042
1101 config DEFAULT_SGI_PARTITION
1113 config MIPS_L1_CACHE_SHIFT
1115 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1116 default "6" if MIPS_CPU_SCACHE
1117 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1120 config HAVE_STD_PC_SERIAL_PORT
1124 bool "ARC console support"
1125 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1129 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1134 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1143 menu "CPU selection"
1149 config CPU_LOONGSON2E
1151 depends on SYS_HAS_CPU_LOONGSON2E
1152 select CPU_LOONGSON2
1154 The Loongson 2E processor implements the MIPS III instruction set
1155 with many extensions.
1157 It has an internal FPGA northbridge, which is compatible to
1160 config CPU_LOONGSON2F
1162 depends on SYS_HAS_CPU_LOONGSON2F
1163 select CPU_LOONGSON2
1164 select ARCH_REQUIRE_GPIOLIB
1166 The Loongson 2F processor implements the MIPS III instruction set
1167 with many extensions.
1169 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1170 have a similar programming interface with FPGA northbridge used in
1173 config CPU_LOONGSON1B
1175 depends on SYS_HAS_CPU_LOONGSON1B
1176 select CPU_LOONGSON1
1178 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1179 release 2 instruction set.
1181 config CPU_MIPS32_R1
1182 bool "MIPS32 Release 1"
1183 depends on SYS_HAS_CPU_MIPS32_R1
1184 select CPU_HAS_PREFETCH
1185 select CPU_SUPPORTS_32BIT_KERNEL
1186 select CPU_SUPPORTS_HIGHMEM
1188 Choose this option to build a kernel for release 1 or later of the
1189 MIPS32 architecture. Most modern embedded systems with a 32-bit
1190 MIPS processor are based on a MIPS32 processor. If you know the
1191 specific type of processor in your system, choose those that one
1192 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1193 Release 2 of the MIPS32 architecture is available since several
1194 years so chances are you even have a MIPS32 Release 2 processor
1195 in which case you should choose CPU_MIPS32_R2 instead for better
1198 config CPU_MIPS32_R2
1199 bool "MIPS32 Release 2"
1200 depends on SYS_HAS_CPU_MIPS32_R2
1201 select CPU_HAS_PREFETCH
1202 select CPU_SUPPORTS_32BIT_KERNEL
1203 select CPU_SUPPORTS_HIGHMEM
1206 Choose this option to build a kernel for release 2 or later of the
1207 MIPS32 architecture. Most modern embedded systems with a 32-bit
1208 MIPS processor are based on a MIPS32 processor. If you know the
1209 specific type of processor in your system, choose those that one
1210 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1212 config CPU_MIPS64_R1
1213 bool "MIPS64 Release 1"
1214 depends on SYS_HAS_CPU_MIPS64_R1
1215 select CPU_HAS_PREFETCH
1216 select CPU_SUPPORTS_32BIT_KERNEL
1217 select CPU_SUPPORTS_64BIT_KERNEL
1218 select CPU_SUPPORTS_HIGHMEM
1219 select CPU_SUPPORTS_HUGEPAGES
1221 Choose this option to build a kernel for release 1 or later of the
1222 MIPS64 architecture. Many modern embedded systems with a 64-bit
1223 MIPS processor are based on a MIPS64 processor. If you know the
1224 specific type of processor in your system, choose those that one
1225 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1226 Release 2 of the MIPS64 architecture is available since several
1227 years so chances are you even have a MIPS64 Release 2 processor
1228 in which case you should choose CPU_MIPS64_R2 instead for better
1231 config CPU_MIPS64_R2
1232 bool "MIPS64 Release 2"
1233 depends on SYS_HAS_CPU_MIPS64_R2
1234 select CPU_HAS_PREFETCH
1235 select CPU_SUPPORTS_32BIT_KERNEL
1236 select CPU_SUPPORTS_64BIT_KERNEL
1237 select CPU_SUPPORTS_HIGHMEM
1238 select CPU_SUPPORTS_HUGEPAGES
1240 Choose this option to build a kernel for release 2 or later of the
1241 MIPS64 architecture. Many modern embedded systems with a 64-bit
1242 MIPS processor are based on a MIPS64 processor. If you know the
1243 specific type of processor in your system, choose those that one
1244 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1248 depends on SYS_HAS_CPU_R3000
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_HIGHMEM
1253 Please make sure to pick the right CPU type. Linux/MIPS is not
1254 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1255 *not* work on R4000 machines and vice versa. However, since most
1256 of the supported machines have an R4000 (or similar) CPU, R4x00
1257 might be a safe bet. If the resulting kernel does not work,
1258 try to recompile with R3000.
1262 depends on SYS_HAS_CPU_TX39XX
1263 select CPU_SUPPORTS_32BIT_KERNEL
1267 depends on SYS_HAS_CPU_VR41XX
1268 select CPU_SUPPORTS_32BIT_KERNEL
1269 select CPU_SUPPORTS_64BIT_KERNEL
1271 The options selects support for the NEC VR4100 series of processors.
1272 Only choose this option if you have one of these processors as a
1273 kernel built with this option will not run on any other type of
1274 processor or vice versa.
1278 depends on SYS_HAS_CPU_R4300
1279 select CPU_SUPPORTS_32BIT_KERNEL
1280 select CPU_SUPPORTS_64BIT_KERNEL
1282 MIPS Technologies R4300-series processors.
1286 depends on SYS_HAS_CPU_R4X00
1287 select CPU_SUPPORTS_32BIT_KERNEL
1288 select CPU_SUPPORTS_64BIT_KERNEL
1289 select CPU_SUPPORTS_HUGEPAGES
1291 MIPS Technologies R4000-series processors other than 4300, including
1292 the R4000, R4400, R4600, and 4700.
1296 depends on SYS_HAS_CPU_TX49XX
1297 select CPU_HAS_PREFETCH
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1300 select CPU_SUPPORTS_HUGEPAGES
1304 depends on SYS_HAS_CPU_R5000
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_64BIT_KERNEL
1307 select CPU_SUPPORTS_HUGEPAGES
1309 MIPS Technologies R5000-series processors other than the Nevada.
1313 depends on SYS_HAS_CPU_R5432
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1316 select CPU_SUPPORTS_HUGEPAGES
1320 depends on SYS_HAS_CPU_R5500
1321 select CPU_SUPPORTS_32BIT_KERNEL
1322 select CPU_SUPPORTS_64BIT_KERNEL
1323 select CPU_SUPPORTS_HUGEPAGES
1325 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1330 depends on SYS_HAS_CPU_R6000
1331 select CPU_SUPPORTS_32BIT_KERNEL
1333 MIPS Technologies R6000 and R6000A series processors. Note these
1334 processors are extremely rare and the support for them is incomplete.
1338 depends on SYS_HAS_CPU_NEVADA
1339 select CPU_SUPPORTS_32BIT_KERNEL
1340 select CPU_SUPPORTS_64BIT_KERNEL
1341 select CPU_SUPPORTS_HUGEPAGES
1343 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1347 depends on SYS_HAS_CPU_R8000
1348 select CPU_HAS_PREFETCH
1349 select CPU_SUPPORTS_64BIT_KERNEL
1351 MIPS Technologies R8000 processors. Note these processors are
1352 uncommon and the support for them is incomplete.
1356 depends on SYS_HAS_CPU_R10000
1357 select CPU_HAS_PREFETCH
1358 select CPU_SUPPORTS_32BIT_KERNEL
1359 select CPU_SUPPORTS_64BIT_KERNEL
1360 select CPU_SUPPORTS_HIGHMEM
1361 select CPU_SUPPORTS_HUGEPAGES
1363 MIPS Technologies R10000-series processors.
1367 depends on SYS_HAS_CPU_RM7000
1368 select CPU_HAS_PREFETCH
1369 select CPU_SUPPORTS_32BIT_KERNEL
1370 select CPU_SUPPORTS_64BIT_KERNEL
1371 select CPU_SUPPORTS_HIGHMEM
1372 select CPU_SUPPORTS_HUGEPAGES
1376 depends on SYS_HAS_CPU_SB1
1377 select CPU_SUPPORTS_32BIT_KERNEL
1378 select CPU_SUPPORTS_64BIT_KERNEL
1379 select CPU_SUPPORTS_HIGHMEM
1380 select CPU_SUPPORTS_HUGEPAGES
1381 select WEAK_ORDERING
1383 config CPU_CAVIUM_OCTEON
1384 bool "Cavium Octeon processor"
1385 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1386 select ARCH_SPARSEMEM_ENABLE
1387 select CPU_HAS_PREFETCH
1388 select CPU_SUPPORTS_64BIT_KERNEL
1389 select SYS_SUPPORTS_SMP
1390 select NR_CPUS_DEFAULT_16
1391 select WEAK_ORDERING
1392 select CPU_SUPPORTS_HIGHMEM
1393 select CPU_SUPPORTS_HUGEPAGES
1396 select USB_EHCI_BIG_ENDIAN_MMIO
1398 The Cavium Octeon processor is a highly integrated chip containing
1399 many ethernet hardware widgets for networking tasks. The processor
1400 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1401 Full details can be found at http://www.caviumnetworks.com.
1403 config CPU_BMIPS3300
1405 depends on SYS_HAS_CPU_BMIPS3300
1408 Broadcom BMIPS3300 processors.
1410 config CPU_BMIPS4350
1412 depends on SYS_HAS_CPU_BMIPS4350
1414 select SYS_SUPPORTS_SMP
1415 select SYS_SUPPORTS_HOTPLUG_CPU
1417 Broadcom BMIPS4350 ("VIPER") processors.
1419 config CPU_BMIPS4380
1421 depends on SYS_HAS_CPU_BMIPS4380
1423 select SYS_SUPPORTS_SMP
1424 select SYS_SUPPORTS_HOTPLUG_CPU
1426 Broadcom BMIPS4380 processors.
1428 config CPU_BMIPS5000
1430 depends on SYS_HAS_CPU_BMIPS5000
1432 select CPU_SUPPORTS_HIGHMEM
1433 select MIPS_CPU_SCACHE
1434 select SYS_SUPPORTS_SMP
1435 select SYS_SUPPORTS_HOTPLUG_CPU
1437 Broadcom BMIPS5000 processors.
1440 bool "Netlogic XLR SoC"
1441 depends on SYS_HAS_CPU_XLR
1442 select CPU_SUPPORTS_32BIT_KERNEL
1443 select CPU_SUPPORTS_64BIT_KERNEL
1444 select CPU_SUPPORTS_HIGHMEM
1445 select CPU_SUPPORTS_HUGEPAGES
1446 select WEAK_ORDERING
1447 select WEAK_REORDERING_BEYOND_LLSC
1449 Netlogic Microsystems XLR/XLS processors.
1452 bool "Netlogic XLP SoC"
1453 depends on SYS_HAS_CPU_XLP
1454 select CPU_SUPPORTS_32BIT_KERNEL
1455 select CPU_SUPPORTS_64BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1457 select WEAK_ORDERING
1458 select WEAK_REORDERING_BEYOND_LLSC
1459 select CPU_HAS_PREFETCH
1462 Netlogic Microsystems XLP processors.
1466 config CPU_NOP_WORKAROUNDS
1469 config CPU_JUMP_WORKAROUNDS
1472 config CPU_LOONGSON2F_WORKAROUNDS
1473 bool "Loongson 2F Workarounds"
1475 select CPU_NOP_WORKAROUNDS
1476 select CPU_JUMP_WORKAROUNDS
1478 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1479 require workarounds. Without workarounds the system may hang
1480 unexpectedly. For more information please refer to the gas
1481 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1483 Loongson 2F03 and later have fixed these issues and no workarounds
1484 are needed. The workarounds have no significant side effect on them
1485 but may decrease the performance of the system so this option should
1486 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1489 If unsure, please say Y.
1490 endif # CPU_LOONGSON2F
1492 config SYS_SUPPORTS_ZBOOT
1494 select HAVE_KERNEL_GZIP
1495 select HAVE_KERNEL_BZIP2
1496 select HAVE_KERNEL_LZMA
1497 select HAVE_KERNEL_LZO
1499 config SYS_SUPPORTS_ZBOOT_UART16550
1501 select SYS_SUPPORTS_ZBOOT
1503 config CPU_LOONGSON2
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_64BIT_KERNEL
1507 select CPU_SUPPORTS_HIGHMEM
1508 select CPU_SUPPORTS_HUGEPAGES
1510 config CPU_LOONGSON1
1514 select CPU_HAS_PREFETCH
1515 select CPU_SUPPORTS_32BIT_KERNEL
1516 select CPU_SUPPORTS_HIGHMEM
1521 select CPU_SUPPORTS_32BIT_KERNEL
1522 select DMA_NONCOHERENT
1524 select SWAP_IO_SPACE
1525 select WEAK_ORDERING
1527 config SYS_HAS_CPU_LOONGSON2E
1530 config SYS_HAS_CPU_LOONGSON2F
1532 select CPU_SUPPORTS_CPUFREQ
1533 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1534 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1536 config SYS_HAS_CPU_LOONGSON1B
1539 config SYS_HAS_CPU_MIPS32_R1
1542 config SYS_HAS_CPU_MIPS32_R2
1545 config SYS_HAS_CPU_MIPS64_R1
1548 config SYS_HAS_CPU_MIPS64_R2
1551 config SYS_HAS_CPU_R3000
1554 config SYS_HAS_CPU_TX39XX
1557 config SYS_HAS_CPU_VR41XX
1560 config SYS_HAS_CPU_R4300
1563 config SYS_HAS_CPU_R4X00
1566 config SYS_HAS_CPU_TX49XX
1569 config SYS_HAS_CPU_R5000
1572 config SYS_HAS_CPU_R5432
1575 config SYS_HAS_CPU_R5500
1578 config SYS_HAS_CPU_R6000
1581 config SYS_HAS_CPU_NEVADA
1584 config SYS_HAS_CPU_R8000
1587 config SYS_HAS_CPU_R10000
1590 config SYS_HAS_CPU_RM7000
1593 config SYS_HAS_CPU_SB1
1596 config SYS_HAS_CPU_CAVIUM_OCTEON
1599 config SYS_HAS_CPU_BMIPS3300
1602 config SYS_HAS_CPU_BMIPS4350
1605 config SYS_HAS_CPU_BMIPS4380
1608 config SYS_HAS_CPU_BMIPS5000
1611 config SYS_HAS_CPU_XLR
1614 config SYS_HAS_CPU_XLP
1618 # CPU may reorder R->R, R->W, W->R, W->W
1619 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1621 config WEAK_ORDERING
1625 # CPU may reorder reads and writes beyond LL/SC
1626 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1628 config WEAK_REORDERING_BEYOND_LLSC
1633 # These two indicate any level of the MIPS32 and MIPS64 architecture
1637 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1641 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1644 # These two indicate the revision of the architecture, either Release 1 or Release 2
1648 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1652 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1654 config SYS_SUPPORTS_32BIT_KERNEL
1656 config SYS_SUPPORTS_64BIT_KERNEL
1658 config CPU_SUPPORTS_32BIT_KERNEL
1660 config CPU_SUPPORTS_64BIT_KERNEL
1662 config CPU_SUPPORTS_CPUFREQ
1664 config CPU_SUPPORTS_ADDRWINCFG
1666 config CPU_SUPPORTS_HUGEPAGES
1668 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1670 config MIPS_PGD_C0_CONTEXT
1672 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1675 # Set to y for ptrace access to watch registers.
1677 config HARDWARE_WATCHPOINTS
1679 default y if CPU_MIPSR1 || CPU_MIPSR2
1684 prompt "Kernel code model"
1686 You should only select this option if you have a workload that
1687 actually benefits from 64-bit processing or if your machine has
1688 large memory. You will only be presented a single option in this
1689 menu if your system does not support both 32-bit and 64-bit kernels.
1692 bool "32-bit kernel"
1693 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1696 Select this option if you want to build a 32-bit kernel.
1698 bool "64-bit kernel"
1699 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1701 Select this option if you want to build a 64-bit kernel.
1706 bool "KVM Guest Kernel"
1707 depends on BROKEN_ON_SMP
1709 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1711 config KVM_HOST_FREQ
1712 int "KVM Host Processor Frequency (MHz)"
1713 depends on KVM_GUEST
1716 Select this option if building a guest kernel for KVM to skip
1717 RTC emulation when determining guest CPU Frequency. Instead, the guest
1718 processor frequency is automatically derived from the host frequency.
1721 prompt "Kernel page size"
1722 default PAGE_SIZE_4KB
1724 config PAGE_SIZE_4KB
1726 depends on !CPU_LOONGSON2
1728 This option select the standard 4kB Linux page size. On some
1729 R3000-family processors this is the only available page size. Using
1730 4kB page size will minimize memory consumption and is therefore
1731 recommended for low memory systems.
1733 config PAGE_SIZE_8KB
1735 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1737 Using 8kB page size will result in higher performance kernel at
1738 the price of higher memory consumption. This option is available
1739 only on R8000 and cnMIPS processors. Note that you will need a
1740 suitable Linux distribution to support this.
1742 config PAGE_SIZE_16KB
1744 depends on !CPU_R3000 && !CPU_TX39XX
1746 Using 16kB page size will result in higher performance kernel at
1747 the price of higher memory consumption. This option is available on
1748 all non-R3000 family processors. Note that you will need a suitable
1749 Linux distribution to support this.
1751 config PAGE_SIZE_32KB
1753 depends on CPU_CAVIUM_OCTEON
1755 Using 32kB page size will result in higher performance kernel at
1756 the price of higher memory consumption. This option is available
1757 only on cnMIPS cores. Note that you will need a suitable Linux
1758 distribution to support this.
1760 config PAGE_SIZE_64KB
1762 depends on !CPU_R3000 && !CPU_TX39XX
1764 Using 64kB page size will result in higher performance kernel at
1765 the price of higher memory consumption. This option is available on
1766 all non-R3000 family processor. Not that at the time of this
1767 writing this option is still high experimental.
1771 config FORCE_MAX_ZONEORDER
1772 int "Maximum zone order"
1773 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1774 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1775 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1776 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1777 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1778 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1782 The kernel memory allocator divides physically contiguous memory
1783 blocks into "zones", where each zone is a power of two number of
1784 pages. This option selects the largest power of two that the kernel
1785 keeps in the memory allocator. If you need to allocate very large
1786 blocks of physically contiguous memory, then you may need to
1787 increase this value.
1789 This config option is actually maximum order plus one. For example,
1790 a value of 11 means that the largest free memory block is 2^10 pages.
1792 The page size is not necessarily 4KB. Keep this in mind
1793 when choosing a value for this option.
1796 bool "Use GIC global counter for clock events"
1797 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1799 Use the GIC global counter for the clock events. The R4K clock
1800 event driver is always present, so if the platform ends up not
1801 detecting a GIC, it will fall back to the R4K timer for the
1802 generation of clock events.
1807 config IP22_CPU_SCACHE
1812 # Support for a MIPS32 / MIPS64 style S-caches
1814 config MIPS_CPU_SCACHE
1818 config R5000_CPU_SCACHE
1822 config RM7000_CPU_SCACHE
1826 config SIBYTE_DMA_PAGEOPS
1827 bool "Use DMA to clear/copy pages"
1830 Instead of using the CPU to zero and copy pages, use a Data Mover
1831 channel. These DMA channels are otherwise unused by the standard
1832 SiByte Linux port. Seems to give a small performance benefit.
1834 config CPU_HAS_PREFETCH
1837 config CPU_GENERIC_DUMP_TLB
1839 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1843 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1845 config CPU_R4K_CACHE_TLB
1847 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1850 prompt "MIPS MT options"
1852 config MIPS_MT_DISABLED
1853 bool "Disable multithreading support."
1855 Use this option if your workload can't take advantage of
1856 MIPS hardware multithreading support. On systems that don't have
1857 the option of an MT-enabled processor this option will be the only
1858 option in this menu.
1861 bool "Use 1 TC on each available VPE for SMP"
1862 depends on SYS_SUPPORTS_MULTITHREADING
1863 select CPU_MIPSR2_IRQ_VI
1864 select CPU_MIPSR2_IRQ_EI
1866 select NR_CPUS_DEFAULT_2
1868 select SYS_SUPPORTS_SCHED_SMT if SMP
1869 select SYS_SUPPORTS_SMP
1871 select MIPS_PERF_SHARED_TC_COUNTERS
1873 This is a kernel model which is known a VSMP but lately has been
1874 marketesed into SMVP.
1875 Virtual SMP uses the processor's VPEs to implement virtual
1876 processors. In currently available configuration of the 34K processor
1877 this allows for a dual processor. Both processors will share the same
1878 primary caches; each will obtain the half of the TLB for it's own
1879 exclusive use. For a layman this model can be described as similar to
1880 what Intel calls Hyperthreading.
1882 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1885 bool "SMTC: Use all TCs on all VPEs for SMP"
1886 depends on CPU_MIPS32_R2
1887 #depends on CPU_MIPS64_R2 # once there is hardware ...
1888 depends on SYS_SUPPORTS_MULTITHREADING
1889 select CPU_MIPSR2_IRQ_VI
1890 select CPU_MIPSR2_IRQ_EI
1892 select NR_CPUS_DEFAULT_8
1894 select SYS_SUPPORTS_SMP
1897 This is a kernel model which is known a SMTC or lately has been
1898 marketesed into SMVP.
1899 is presenting the available TC's of the core as processors to Linux.
1900 On currently available 34K processors this means a Linux system will
1901 see up to 5 processors. The implementation of the SMTC kernel differs
1902 significantly from VSMP and cannot efficiently coexist in the same
1903 kernel binary so the choice between VSMP and SMTC is a compile time
1906 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1914 bool "SMT (multithreading) scheduler support"
1915 depends on SYS_SUPPORTS_SCHED_SMT
1918 SMT scheduler support improves the CPU scheduler's decision making
1919 when dealing with MIPS MT enabled cores at a cost of slightly
1920 increased overhead in some places. If unsure say N here.
1922 config SYS_SUPPORTS_SCHED_SMT
1925 config SYS_SUPPORTS_MULTITHREADING
1928 config MIPS_MT_FPAFF
1929 bool "Dynamic FPU affinity for FP-intensive threads"
1931 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1933 config MIPS_VPE_LOADER
1934 bool "VPE loader support."
1935 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1936 select CPU_MIPSR2_IRQ_VI
1937 select CPU_MIPSR2_IRQ_EI
1940 Includes a loader for loading an elf relocatable object
1941 onto another VPE and running it.
1943 config MIPS_MT_SMTC_IM_BACKSTOP
1944 bool "Use per-TC register bits as backstop for inhibited IM bits"
1945 depends on MIPS_MT_SMTC
1948 To support multiple TC microthreads acting as "CPUs" within
1949 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1950 during interrupt handling. To support legacy drivers and interrupt
1951 controller management code, SMTC has a "backstop" to track and
1952 if necessary restore the interrupt mask. This has some performance
1953 impact on interrupt service overhead.
1955 config MIPS_MT_SMTC_IRQAFF
1956 bool "Support IRQ affinity API"
1957 depends on MIPS_MT_SMTC
1960 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1961 for SMTC Linux kernel. Requires platform support, of which
1962 an example can be found in the MIPS kernel i8259 and Malta
1963 platform code. Adds some overhead to interrupt dispatch, and
1964 should be used only if you know what you are doing.
1966 config MIPS_VPE_LOADER_TOM
1967 bool "Load VPE program into memory hidden from linux"
1968 depends on MIPS_VPE_LOADER
1971 The loader can use memory that is present but has been hidden from
1972 Linux using the kernel command line option "mem=xxMB". It's up to
1973 you to ensure the amount you put in the option and the space your
1974 program requires is less or equal to the amount physically present.
1976 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1977 config MIPS_VPE_APSP_API
1978 bool "Enable support for AP/SP API (RTLX)"
1979 depends on MIPS_VPE_LOADER
1983 bool "MIPS CMP framework support"
1984 depends on SYS_SUPPORTS_MIPS_CMP
1986 select SYS_SUPPORTS_SMP
1987 select SYS_SUPPORTS_SCHED_SMT if SMP
1988 select WEAK_ORDERING
1991 This is a placeholder option for the GCMP work. It will need to
1992 be handled differently...
1994 config SB1_PASS_1_WORKAROUNDS
1996 depends on CPU_SB1_PASS_1
1999 config SB1_PASS_2_WORKAROUNDS
2001 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2004 config SB1_PASS_2_1_WORKAROUNDS
2006 depends on CPU_SB1 && CPU_SB1_PASS_2
2010 config 64BIT_PHYS_ADDR
2013 config ARCH_PHYS_ADDR_T_64BIT
2014 def_bool 64BIT_PHYS_ADDR
2016 config CPU_HAS_SMARTMIPS
2017 depends on SYS_SUPPORTS_SMARTMIPS
2018 bool "Support for the SmartMIPS ASE"
2020 SmartMIPS is a extension of the MIPS32 architecture aimed at
2021 increased security at both hardware and software level for
2022 smartcards. Enabling this option will allow proper use of the
2023 SmartMIPS instructions by Linux applications. However a kernel with
2024 this option will not work on a MIPS core without SmartMIPS core. If
2025 you don't know you probably don't have SmartMIPS and should say N
2028 config CPU_MICROMIPS
2029 depends on SYS_SUPPORTS_MICROMIPS
2030 bool "Build kernel using microMIPS ISA"
2032 When this option is enabled the kernel will be built using the
2042 # Vectored interrupt mode is an R2 feature
2044 config CPU_MIPSR2_IRQ_VI
2048 # Extended interrupt mode is an R2 feature
2050 config CPU_MIPSR2_IRQ_EI
2055 depends on !CPU_R3000
2061 config CPU_DADDI_WORKAROUNDS
2064 config CPU_R4000_WORKAROUNDS
2066 select CPU_R4400_WORKAROUNDS
2068 config CPU_R4400_WORKAROUNDS
2072 # - Highmem only makes sense for the 32-bit kernel.
2073 # - The current highmem code will only work properly on physically indexed
2074 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2075 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2076 # moment we protect the user and offer the highmem option only on machines
2077 # where it's known to be safe. This will not offer highmem on a few systems
2078 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2079 # indexed CPUs but we're playing safe.
2080 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2081 # know they might have memory configurations that could make use of highmem
2085 bool "High Memory Support"
2086 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2088 config CPU_SUPPORTS_HIGHMEM
2091 config SYS_SUPPORTS_HIGHMEM
2094 config SYS_SUPPORTS_SMARTMIPS
2097 config SYS_SUPPORTS_MICROMIPS
2100 config ARCH_FLATMEM_ENABLE
2102 depends on !NUMA && !CPU_LOONGSON2
2104 config ARCH_DISCONTIGMEM_ENABLE
2106 default y if SGI_IP27
2108 Say Y to support efficient handling of discontiguous physical memory,
2109 for architectures which are either NUMA (Non-Uniform Memory Access)
2110 or have huge holes in the physical address space for other reasons.
2111 See <file:Documentation/vm/numa> for more.
2113 config ARCH_SPARSEMEM_ENABLE
2115 select SPARSEMEM_STATIC
2119 depends on SYS_SUPPORTS_NUMA
2121 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2122 Access). This option improves performance on systems with more
2123 than two nodes; on two node systems it is generally better to
2124 leave it disabled; on single node systems disable this option
2127 config SYS_SUPPORTS_NUMA
2133 depends on NEED_MULTIPLE_NODES
2135 config HW_PERF_EVENTS
2136 bool "Enable hardware performance counter support for perf events"
2137 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2140 Enable hardware performance counter support for perf events. If
2141 disabled, perf events will use software events only.
2146 bool "Multi-Processing support"
2147 depends on SYS_SUPPORTS_SMP
2148 select USE_GENERIC_SMP_HELPERS
2150 This enables support for systems with more than one CPU. If you have
2151 a system with only one CPU, like most personal computers, say N. If
2152 you have a system with more than one CPU, say Y.
2154 If you say N here, the kernel will run on single and multiprocessor
2155 machines, but will use only one CPU of a multiprocessor machine. If
2156 you say Y here, the kernel will run on many, but not all,
2157 singleprocessor machines. On a singleprocessor machine, the kernel
2158 will run faster if you say N here.
2160 People using multiprocessor machines who say Y here should also say
2161 Y to "Enhanced Real Time Clock Support", below.
2163 See also the SMP-HOWTO available at
2164 <http://www.tldp.org/docs.html#howto>.
2166 If you don't know what to do here, say N.
2171 config SYS_SUPPORTS_MIPS_CMP
2174 config SYS_SUPPORTS_SMP
2177 config NR_CPUS_DEFAULT_1
2180 config NR_CPUS_DEFAULT_2
2183 config NR_CPUS_DEFAULT_4
2186 config NR_CPUS_DEFAULT_8
2189 config NR_CPUS_DEFAULT_16
2192 config NR_CPUS_DEFAULT_32
2195 config NR_CPUS_DEFAULT_64
2199 int "Maximum number of CPUs (2-64)"
2200 range 1 64 if NR_CPUS_DEFAULT_1
2202 default "1" if NR_CPUS_DEFAULT_1
2203 default "2" if NR_CPUS_DEFAULT_2
2204 default "4" if NR_CPUS_DEFAULT_4
2205 default "8" if NR_CPUS_DEFAULT_8
2206 default "16" if NR_CPUS_DEFAULT_16
2207 default "32" if NR_CPUS_DEFAULT_32
2208 default "64" if NR_CPUS_DEFAULT_64
2210 This allows you to specify the maximum number of CPUs which this
2211 kernel will support. The maximum supported value is 32 for 32-bit
2212 kernel and 64 for 64-bit kernels; the minimum value which makes
2213 sense is 1 for Qemu (useful only for kernel debugging purposes)
2214 and 2 for all others.
2216 This is purely to save memory - each supported CPU adds
2217 approximately eight kilobytes to the kernel image. For best
2218 performance should round up your number of processors to the next
2221 config MIPS_PERF_SHARED_TC_COUNTERS
2225 # Timer Interrupt Frequency Configuration
2229 prompt "Timer frequency"
2232 Allows the configuration of the timer frequency.
2235 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2244 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2247 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2250 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2253 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2257 config SYS_SUPPORTS_48HZ
2260 config SYS_SUPPORTS_100HZ
2263 config SYS_SUPPORTS_128HZ
2266 config SYS_SUPPORTS_250HZ
2269 config SYS_SUPPORTS_256HZ
2272 config SYS_SUPPORTS_1000HZ
2275 config SYS_SUPPORTS_1024HZ
2278 config SYS_SUPPORTS_ARBIT_HZ
2280 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2281 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2282 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2283 !SYS_SUPPORTS_1024HZ
2288 default 100 if HZ_100
2289 default 128 if HZ_128
2290 default 250 if HZ_250
2291 default 256 if HZ_256
2292 default 1000 if HZ_1000
2293 default 1024 if HZ_1024
2295 source "kernel/Kconfig.preempt"
2298 bool "Kexec system call"
2300 kexec is a system call that implements the ability to shutdown your
2301 current kernel, and to start another kernel. It is like a reboot
2302 but it is independent of the system firmware. And like a reboot
2303 you can start any kernel with it, not just Linux.
2305 The name comes from the similarity to the exec system call.
2307 It is an ongoing process to be certain the hardware in a machine
2308 is properly shutdown, so do not be surprised if this code does not
2309 initially work for you. It may help to enable device hotplugging
2310 support. As of this writing the exact hardware interface is
2311 strongly in flux, so no good recommendation can be made.
2314 bool "Kernel crash dumps"
2316 Generate crash dump after being started by kexec.
2317 This should be normally only set in special crash dump kernels
2318 which are loaded in the main kernel with kexec-tools into
2319 a specially reserved region and then later executed after
2320 a crash by kdump/kexec. The crash dump kernel must be compiled
2321 to a memory address not used by the main kernel or firmware using
2324 config PHYSICAL_START
2325 hex "Physical address where the kernel is loaded"
2326 default "0xffffffff84000000" if 64BIT
2327 default "0x84000000" if 32BIT
2328 depends on CRASH_DUMP
2330 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2331 If you plan to use kernel for capturing the crash dump change
2332 this value to start of the reserved region (the "X" value as
2333 specified in the "crashkernel=YM@XM" command line boot parameter
2334 passed to the panic-ed kernel).
2337 bool "Enable seccomp to safely compute untrusted bytecode"
2341 This kernel feature is useful for number crunching applications
2342 that may need to compute untrusted bytecode during their
2343 execution. By using pipes or other transports made available to
2344 the process as file descriptors supporting the read/write
2345 syscalls, it's possible to isolate those applications in
2346 their own address space using seccomp. Once seccomp is
2347 enabled via /proc/<pid>/seccomp, it cannot be disabled
2348 and the task is only allowed to execute a few safe syscalls
2349 defined by each seccomp mode.
2351 If unsure, say Y. Only embedded should say N here.
2353 config CC_STACKPROTECTOR
2354 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2356 This option turns on the -fstack-protector GCC feature. This
2357 feature puts, at the beginning of functions, a canary value on
2358 the stack just before the return address, and validates
2359 the value just before actually returning. Stack based buffer
2360 overflows (that need to overwrite this return address) now also
2361 overwrite the canary, which gets detected and the attack is then
2362 neutralized via a kernel panic.
2364 This feature requires gcc version 4.2 or above.
2369 select OF_EARLY_FLATTREE
2374 config LOCKDEP_SUPPORT
2378 config STACKTRACE_SUPPORT
2382 source "init/Kconfig"
2384 source "kernel/Kconfig.freezer"
2386 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2394 bool "Support for PCI controller"
2395 depends on HW_HAS_PCI
2397 select NO_GENERIC_PCI_IOPORT_MAP
2399 Find out whether you have a PCI motherboard. PCI is the name of a
2400 bus system, i.e. the way the CPU talks to the other stuff inside
2401 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2407 source "drivers/pci/Kconfig"
2409 source "drivers/pci/pcie/Kconfig"
2412 # ISA support is now enabled via select. Too many systems still have the one
2413 # or other ISA chip on the board that users don't know about so don't expect
2414 # users to choose the right thing ...
2421 depends on HW_HAS_EISA
2423 select GENERIC_ISA_DMA
2425 The Extended Industry Standard Architecture (EISA) bus was
2426 developed as an open alternative to the IBM MicroChannel bus.
2428 The EISA bus provided some of the features of the IBM MicroChannel
2429 bus while maintaining backward compatibility with cards made for
2430 the older ISA bus. The EISA bus saw limited use between 1988 and
2431 1995 when it was made obsolete by the PCI bus.
2433 Say Y here if you are building a kernel for an EISA-based machine.
2437 source "drivers/eisa/Kconfig"
2440 bool "TURBOchannel support"
2441 depends on MACH_DECSTATION
2443 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2444 processors. TURBOchannel programming specifications are available
2446 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2448 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2449 Linux driver support status is documented at:
2450 <http://www.linux-mips.org/wiki/DECstation>
2460 select MIPS_EXTERNAL_TIMER
2468 source "drivers/pcmcia/Kconfig"
2470 source "drivers/pci/hotplug/Kconfig"
2473 bool "RapidIO support"
2477 If you say Y here, the kernel will include drivers and
2478 infrastructure code to support RapidIO interconnect devices.
2480 source "drivers/rapidio/Kconfig"
2484 menu "Executable file formats"
2486 source "fs/Kconfig.binfmt"
2491 config MIPS32_COMPAT
2492 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2495 Select this option if you want Linux/MIPS 32-bit binary
2496 compatibility. Since all software available for Linux/MIPS is
2497 currently 32-bit you should say Y here.
2501 depends on MIPS32_COMPAT
2502 select ARCH_WANT_OLD_COMPAT_IPC
2505 config SYSVIPC_COMPAT
2507 depends on COMPAT && SYSVIPC
2511 bool "Kernel support for o32 binaries"
2512 depends on MIPS32_COMPAT
2514 Select this option if you want to run o32 binaries. These are pure
2515 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2516 existing binaries are in this format.
2521 bool "Kernel support for n32 binaries"
2522 depends on MIPS32_COMPAT
2524 Select this option if you want to run n32 binaries. These are
2525 64-bit binaries using 32-bit quantities for addressing and certain
2526 data that would normally be 64-bit. They are used in special
2533 default y if MIPS32_O32 || MIPS32_N32
2537 menu "Power management options"
2539 config ARCH_HIBERNATION_POSSIBLE
2541 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2543 config ARCH_SUSPEND_POSSIBLE
2545 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2547 source "kernel/power/Kconfig"
2551 config MIPS_EXTERNAL_TIMER
2554 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2555 menu "CPU Power Management"
2556 source "drivers/cpufreq/Kconfig"
2560 source "net/Kconfig"
2562 source "drivers/Kconfig"
2564 source "drivers/firmware/Kconfig"
2568 source "arch/mips/Kconfig.debug"
2570 source "security/Kconfig"
2572 source "crypto/Kconfig"
2574 source "lib/Kconfig"
2576 source "arch/mips/kvm/Kconfig"