4 select HAVE_CONTEXT_TRACKING
5 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_ARCH_TRACEHOOK
12 select ARCH_HAVE_CUSTOM_GPIO_H
13 select HAVE_FUNCTION_TRACER
14 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
15 select HAVE_DYNAMIC_FTRACE
16 select HAVE_FTRACE_MCOUNT_RECORD
17 select HAVE_C_RECORDMCOUNT
18 select HAVE_FUNCTION_GRAPH_TRACER
20 select HAVE_KRETPROBES
21 select HAVE_DEBUG_KMEMLEAK
22 select HAVE_SYSCALL_TRACEPOINTS
23 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
24 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
25 select RTC_LIB if !MACH_LOONGSON
26 select GENERIC_ATOMIC64 if !64BIT
27 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
29 select HAVE_DMA_API_DEBUG
30 select GENERIC_IRQ_PROBE
31 select GENERIC_IRQ_SHOW
32 select GENERIC_PCI_IOMAP
33 select HAVE_ARCH_JUMP_LABEL
34 select ARCH_WANT_IPC_PARSE_VERSION
35 select IRQ_FORCED_THREADING
37 select HAVE_MEMBLOCK_NODE_MAP
38 select ARCH_DISCARD_MEMBLOCK
39 select GENERIC_SMP_IDLE_THREAD
40 select BUILDTIME_EXTABLE_SORT
41 select GENERIC_CLOCKEVENTS
42 select GENERIC_CMOS_UPDATE
43 select HAVE_MOD_ARCH_SPECIFIC
45 select MODULES_USE_ELF_REL if MODULES
46 select MODULES_USE_ELF_RELA if MODULES && 64BIT
47 select CLONE_BACKWARDS
48 select HAVE_DEBUG_STACKOVERFLOW
50 menu "Machine selection"
57 bool "Alchemy processor based machines"
58 select 64BIT_PHYS_ADDR
62 select SYS_HAS_CPU_MIPS32_R1
63 select SYS_SUPPORTS_32BIT_KERNEL
64 select SYS_SUPPORTS_APM_EMULATION
65 select ARCH_REQUIRE_GPIOLIB
66 select SYS_SUPPORTS_ZBOOT
67 select USB_ARCH_HAS_OHCI
68 select USB_ARCH_HAS_EHCI
71 bool "Texas Instruments AR7"
73 select DMA_NONCOHERENT
79 select SYS_HAS_CPU_MIPS32_R1
80 select SYS_HAS_EARLY_PRINTK
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_LITTLE_ENDIAN
83 select SYS_SUPPORTS_ZBOOT_UART16550
84 select ARCH_REQUIRE_GPIOLIB
88 Support for the Texas Instruments AR7 System-on-a-Chip
89 family: TNETD7100, 7200 and 7300.
92 bool "Atheros AR71XX/AR724X/AR913X based boards"
93 select ARCH_REQUIRE_GPIOLIB
97 select DMA_NONCOHERENT
102 select SYS_HAS_CPU_MIPS32_R2
103 select SYS_HAS_EARLY_PRINTK
104 select SYS_SUPPORTS_32BIT_KERNEL
105 select SYS_SUPPORTS_BIG_ENDIAN
107 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
110 bool "Broadcom BCM47XX based boards"
111 select ARCH_WANT_OPTIONAL_GPIOLIB
115 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_MIPS32_R1
120 select NO_EXCEPT_FILL
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select SYS_HAS_EARLY_PRINTK
125 Support for BCM47XX based boards
128 bool "Broadcom BCM63XX based boards"
132 select DMA_NONCOHERENT
134 select SYS_HAS_CPU_MIPS32_R1
135 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_BIG_ENDIAN
138 select SYS_HAS_EARLY_PRINTK
140 select ARCH_REQUIRE_GPIOLIB
143 Support for BCM63XX based boards
150 select DMA_NONCOHERENT
151 select EARLY_PRINTK_8250 if EARLY_PRINTK
157 select PCI_GT64XXX_PCI0
159 select SYS_HAS_CPU_NEVADA
160 select SYS_HAS_EARLY_PRINTK
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_64BIT_KERNEL
163 select SYS_SUPPORTS_LITTLE_ENDIAN
165 config MACH_DECSTATION
172 select CPU_DADDI_WORKAROUNDS if 64BIT
173 select CPU_R4000_WORKAROUNDS if 64BIT
174 select CPU_R4400_WORKAROUNDS if 64BIT
175 select DMA_NONCOHERENT
178 select SYS_HAS_CPU_R3000
179 select SYS_HAS_CPU_R4X00
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_SUPPORTS_64BIT_KERNEL
182 select SYS_SUPPORTS_LITTLE_ENDIAN
183 select SYS_SUPPORTS_128HZ
184 select SYS_SUPPORTS_256HZ
185 select SYS_SUPPORTS_1024HZ
187 This enables support for DEC's MIPS based workstations. For details
188 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
189 DECstation porting pages on <http://decstation.unix-ag.org/>.
191 If you have one of the following DECstation Models you definitely
192 want to choose R4xx0 for the CPU Type:
199 otherwise choose R3000.
202 bool "Jazz family of machines"
205 select ARCH_MAY_HAVE_PC_FDC
208 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
209 select GENERIC_ISA_DMA
210 select HAVE_PCSPKR_PLATFORM
215 select SYS_HAS_CPU_R4X00
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_64BIT_KERNEL
218 select SYS_SUPPORTS_100HZ
220 This a family of machines based on the MIPS R4030 chipset which was
221 used by several vendors to build RISC/os and Windows NT workstations.
222 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
223 Olivetti M700-10 workstations.
226 bool "Ingenic JZ4740 based machines"
227 select SYS_HAS_CPU_MIPS32_R1
228 select SYS_SUPPORTS_32BIT_KERNEL
229 select SYS_SUPPORTS_LITTLE_ENDIAN
230 select SYS_SUPPORTS_ZBOOT_UART16550
231 select DMA_NONCOHERENT
233 select ARCH_REQUIRE_GPIOLIB
234 select SYS_HAS_EARLY_PRINTK
237 select GENERIC_IRQ_CHIP
240 bool "Lantiq based platforms"
241 select DMA_NONCOHERENT
245 select SYS_HAS_CPU_MIPS32_R1
246 select SYS_HAS_CPU_MIPS32_R2
247 select SYS_SUPPORTS_BIG_ENDIAN
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_MULTITHREADING
250 select SYS_HAS_EARLY_PRINTK
251 select ARCH_REQUIRE_GPIOLIB
254 select HAVE_MACH_CLKDEV
258 select PINCTRL_LANTIQ
261 bool "LASAT Networks platforms"
264 select DMA_NONCOHERENT
265 select SYS_HAS_EARLY_PRINTK
268 select PCI_GT64XXX_PCI0
270 select R5000_CPU_SCACHE
271 select SYS_HAS_CPU_R5000
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
274 select SYS_SUPPORTS_LITTLE_ENDIAN
277 bool "Loongson family of machines"
278 select SYS_SUPPORTS_ZBOOT
280 This enables the support of Loongson family of machines.
282 Loongson is a family of general-purpose MIPS-compatible CPUs.
283 developed at Institute of Computing Technology (ICT),
284 Chinese Academy of Sciences (CAS) in the People's Republic
285 of China. The chief architect is Professor Weiwu Hu.
287 config MACH_LOONGSON1
288 bool "Loongson 1 family of machines"
289 select SYS_SUPPORTS_ZBOOT
291 This enables support for the Loongson 1 based machines.
293 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
294 the ICT (Institute of Computing Technology) and the Chinese Academy
298 bool "MIPS Malta board"
299 select ARCH_MAY_HAVE_PC_FDC
305 select DMA_NONCOHERENT
306 select GENERIC_ISA_DMA
307 select HAVE_PCSPKR_PLATFORM
314 select MIPS_CPU_SCACHE
315 select PCI_GT64XXX_PCI0
318 select SYS_HAS_CPU_MIPS32_R1
319 select SYS_HAS_CPU_MIPS32_R2
320 select SYS_HAS_CPU_MIPS64_R1
321 select SYS_HAS_CPU_MIPS64_R2
322 select SYS_HAS_CPU_NEVADA
323 select SYS_HAS_CPU_RM7000
324 select SYS_HAS_EARLY_PRINTK
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_64BIT_KERNEL
327 select SYS_SUPPORTS_BIG_ENDIAN
328 select SYS_SUPPORTS_LITTLE_ENDIAN
329 select SYS_SUPPORTS_MIPS_CMP
330 select SYS_SUPPORTS_MULTITHREADING
331 select SYS_SUPPORTS_SMARTMIPS
332 select SYS_SUPPORTS_ZBOOT
334 This enables support for the MIPS Technologies Malta evaluation
338 bool "MIPS SEAD3 board"
344 select CPU_MIPSR2_IRQ_VI
345 select CPU_MIPSR2_IRQ_EI
346 select DMA_NONCOHERENT
350 select SYS_HAS_CPU_MIPS32_R1
351 select SYS_HAS_CPU_MIPS32_R2
352 select SYS_HAS_CPU_MIPS64_R1
353 select SYS_HAS_EARLY_PRINTK
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_64BIT_KERNEL
356 select SYS_SUPPORTS_BIG_ENDIAN
357 select SYS_SUPPORTS_LITTLE_ENDIAN
358 select SYS_SUPPORTS_SMARTMIPS
359 select SYS_SUPPORTS_MICROMIPS
360 select USB_ARCH_HAS_EHCI
361 select USB_EHCI_BIG_ENDIAN_DESC
362 select USB_EHCI_BIG_ENDIAN_MMIO
365 This enables support for the MIPS Technologies SEAD3 evaluation
369 bool "NEC EMMA2RH Mark-eins board"
373 This enables support for the NEC Electronics Mark-eins boards.
376 bool "NEC VR4100 series based machines"
379 select SYS_HAS_CPU_VR41XX
380 select ARCH_REQUIRE_GPIOLIB
383 bool "NXP STB220 board"
386 Support for NXP Semiconductors STB220 Development Board.
393 Support for NXP Semiconductors STB225 Development Board.
396 bool "PMC-Sierra MSP chipsets"
399 select DMA_NONCOHERENT
401 select NO_EXCEPT_FILL
403 select SYS_HAS_CPU_MIPS32_R1
404 select SYS_HAS_CPU_MIPS32_R2
405 select SYS_SUPPORTS_32BIT_KERNEL
406 select SYS_SUPPORTS_BIG_ENDIAN
409 select SERIAL_8250_CONSOLE
410 select USB_EHCI_BIG_ENDIAN_MMIO
411 select USB_EHCI_BIG_ENDIAN_DESC
413 This adds support for the PMC-Sierra family of Multi-Service
414 Processor System-On-A-Chips. These parts include a number
415 of integrated peripherals, interfaces and DSPs in addition to
416 a variety of MIPS cores.
422 select CPU_MIPSR2_IRQ_VI
423 select CPU_MIPSR2_IRQ_EI
425 select DMA_NONCOHERENT
427 select SYS_HAS_CPU_MIPS32_R2
428 select SYS_SUPPORTS_32BIT_KERNEL
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_HIGHMEM
431 select USB_OHCI_LITTLE_ENDIAN
433 This enables support for the Cisco PowerTV Platform.
436 bool "Ralink based machines"
440 select DMA_NONCOHERENT
443 select SYS_HAS_CPU_MIPS32_R1
444 select SYS_HAS_CPU_MIPS32_R2
445 select SYS_SUPPORTS_32BIT_KERNEL
446 select SYS_SUPPORTS_LITTLE_ENDIAN
447 select SYS_HAS_EARLY_PRINTK
448 select HAVE_MACH_CLKDEV
450 select ARCH_HAS_RESET_CONTROLLER
451 select RESET_CONTROLLER
454 bool "SGI IP22 (Indy/Indigo2)"
460 select DEFAULT_SGI_PARTITION
461 select DMA_NONCOHERENT
465 select IP22_CPU_SCACHE
467 select GENERIC_ISA_DMA_SUPPORT_BROKEN
469 select SGI_HAS_INDYDOG
475 select SYS_HAS_CPU_R4X00
476 select SYS_HAS_CPU_R5000
478 # Disable EARLY_PRINTK for now since it leads to overwritten prom
479 # memory during early boot on some machines.
481 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
482 # for a more details discussion
484 # select SYS_HAS_EARLY_PRINTK
485 select SYS_SUPPORTS_32BIT_KERNEL
486 select SYS_SUPPORTS_64BIT_KERNEL
487 select SYS_SUPPORTS_BIG_ENDIAN
489 This are the SGI Indy, Challenge S and Indigo2, as well as certain
490 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
491 that runs on these, say Y here.
494 bool "SGI IP27 (Origin200/2000)"
498 select DEFAULT_SGI_PARTITION
500 select SYS_HAS_EARLY_PRINTK
502 select NR_CPUS_DEFAULT_64
503 select SYS_HAS_CPU_R10000
504 select SYS_SUPPORTS_64BIT_KERNEL
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_NUMA
507 select SYS_SUPPORTS_SMP
509 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
510 workstations. To compile a Linux kernel that runs on these, say Y
514 bool "SGI IP28 (Indigo2 R10k)"
520 select DEFAULT_SGI_PARTITION
521 select DMA_NONCOHERENT
522 select GENERIC_ISA_DMA_SUPPORT_BROKEN
528 select SGI_HAS_INDYDOG
534 select SYS_HAS_CPU_R10000
536 # Disable EARLY_PRINTK for now since it leads to overwritten prom
537 # memory during early boot on some machines.
539 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
540 # for a more details discussion
542 # select SYS_HAS_EARLY_PRINTK
543 select SYS_SUPPORTS_64BIT_KERNEL
544 select SYS_SUPPORTS_BIG_ENDIAN
546 This is the SGI Indigo2 with R10000 processor. To compile a Linux
547 kernel that runs on these, say Y here.
556 select DMA_NONCOHERENT
559 select R5000_CPU_SCACHE
560 select RM7000_CPU_SCACHE
561 select SYS_HAS_CPU_R5000
562 select SYS_HAS_CPU_R10000 if BROKEN
563 select SYS_HAS_CPU_RM7000
564 select SYS_HAS_CPU_NEVADA
565 select SYS_SUPPORTS_64BIT_KERNEL
566 select SYS_SUPPORTS_BIG_ENDIAN
568 If you want this kernel to run on SGI O2 workstation, say Y here.
571 bool "Sibyte BCM91120C-CRhine"
574 select SIBYTE_BCM1120
576 select SYS_HAS_CPU_SB1
577 select SYS_SUPPORTS_BIG_ENDIAN
578 select SYS_SUPPORTS_LITTLE_ENDIAN
581 bool "Sibyte BCM91120x-Carmel"
584 select SIBYTE_BCM1120
586 select SYS_HAS_CPU_SB1
587 select SYS_SUPPORTS_BIG_ENDIAN
588 select SYS_SUPPORTS_LITTLE_ENDIAN
591 bool "Sibyte BCM91125C-CRhone"
594 select SIBYTE_BCM1125
596 select SYS_HAS_CPU_SB1
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_HIGHMEM
599 select SYS_SUPPORTS_LITTLE_ENDIAN
602 bool "Sibyte BCM91125E-Rhone"
605 select SIBYTE_BCM1125H
607 select SYS_HAS_CPU_SB1
608 select SYS_SUPPORTS_BIG_ENDIAN
609 select SYS_SUPPORTS_LITTLE_ENDIAN
612 bool "Sibyte BCM91250A-SWARM"
615 select HAVE_PATA_PLATFORM
618 select SYS_HAS_CPU_SB1
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select SYS_SUPPORTS_HIGHMEM
621 select SYS_SUPPORTS_LITTLE_ENDIAN
622 select ZONE_DMA32 if 64BIT
624 config SIBYTE_LITTLESUR
625 bool "Sibyte BCM91250C2-LittleSur"
628 select HAVE_PATA_PLATFORM
631 select SYS_HAS_CPU_SB1
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select SYS_SUPPORTS_HIGHMEM
634 select SYS_SUPPORTS_LITTLE_ENDIAN
636 config SIBYTE_SENTOSA
637 bool "Sibyte BCM91250E-Sentosa"
642 select SYS_HAS_CPU_SB1
643 select SYS_SUPPORTS_BIG_ENDIAN
644 select SYS_SUPPORTS_LITTLE_ENDIAN
647 bool "Sibyte BCM91480B-BigSur"
650 select NR_CPUS_DEFAULT_4
651 select SIBYTE_BCM1x80
653 select SYS_HAS_CPU_SB1
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_HIGHMEM
656 select SYS_SUPPORTS_LITTLE_ENDIAN
657 select ZONE_DMA32 if 64BIT
660 bool "SNI RM200/300/400"
661 select FW_ARC if CPU_LITTLE_ENDIAN
662 select FW_ARC32 if CPU_LITTLE_ENDIAN
663 select FW_SNIPROM if CPU_BIG_ENDIAN
664 select ARCH_MAY_HAVE_PC_FDC
668 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
669 select DMA_NONCOHERENT
670 select GENERIC_ISA_DMA
671 select HAVE_PCSPKR_PLATFORM
678 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
679 select SYS_HAS_CPU_R4X00
680 select SYS_HAS_CPU_R5000
681 select SYS_HAS_CPU_R10000
682 select R5000_CPU_SCACHE
683 select SYS_HAS_EARLY_PRINTK
684 select SYS_SUPPORTS_32BIT_KERNEL
685 select SYS_SUPPORTS_64BIT_KERNEL
686 select SYS_SUPPORTS_BIG_ENDIAN
687 select SYS_SUPPORTS_HIGHMEM
688 select SYS_SUPPORTS_LITTLE_ENDIAN
690 The SNI RM200/300/400 are MIPS-based machines manufactured by
691 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
692 Technology and now in turn merged with Fujitsu. Say Y here to
693 support this machine type.
696 bool "Toshiba TX39 series based machines"
699 bool "Toshiba TX49 series based machines"
701 config MIKROTIK_RB532
702 bool "Mikrotik RB532 boards"
705 select DMA_NONCOHERENT
708 select SYS_HAS_CPU_MIPS32_R1
709 select SYS_SUPPORTS_32BIT_KERNEL
710 select SYS_SUPPORTS_LITTLE_ENDIAN
713 select ARCH_REQUIRE_GPIOLIB
715 Support the Mikrotik(tm) RouterBoard 532 series,
716 based on the IDT RC32434 SoC.
718 config CAVIUM_OCTEON_SOC
719 bool "Cavium Networks Octeon SoC based boards"
721 select 64BIT_PHYS_ADDR
723 select SYS_SUPPORTS_64BIT_KERNEL
724 select SYS_SUPPORTS_BIG_ENDIAN
726 select SYS_SUPPORTS_HOTPLUG_CPU
727 select SYS_HAS_EARLY_PRINTK
728 select SYS_HAS_CPU_CAVIUM_OCTEON
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 ZONE_DMA32 if 64BIT
769 select SYS_HAS_EARLY_PRINTK
770 select USB_ARCH_HAS_OHCI if USB_SUPPORT
771 select USB_ARCH_HAS_EHCI if USB_SUPPORT
772 select SYS_SUPPORTS_ZBOOT
773 select SYS_SUPPORTS_ZBOOT_UART16550
775 Support for systems based on Netlogic XLR and XLS processors.
776 Say Y here if you have a XLR or XLS based board.
779 bool "Netlogic XLP based systems"
782 select SYS_HAS_CPU_XLP
783 select SYS_SUPPORTS_SMP
785 select SYS_SUPPORTS_32BIT_KERNEL
786 select SYS_SUPPORTS_64BIT_KERNEL
787 select 64BIT_PHYS_ADDR
788 select SYS_SUPPORTS_BIG_ENDIAN
789 select SYS_SUPPORTS_LITTLE_ENDIAN
790 select SYS_SUPPORTS_HIGHMEM
792 select NR_CPUS_DEFAULT_32
796 select ZONE_DMA32 if 64BIT
798 select SYS_HAS_EARLY_PRINTK
800 select SYS_SUPPORTS_ZBOOT
801 select SYS_SUPPORTS_ZBOOT_UART16550
803 This board is based on Netlogic XLP Processor.
804 Say Y here if you have a XLP based board.
808 source "arch/mips/alchemy/Kconfig"
809 source "arch/mips/ath79/Kconfig"
810 source "arch/mips/bcm47xx/Kconfig"
811 source "arch/mips/bcm63xx/Kconfig"
812 source "arch/mips/jazz/Kconfig"
813 source "arch/mips/jz4740/Kconfig"
814 source "arch/mips/lantiq/Kconfig"
815 source "arch/mips/lasat/Kconfig"
816 source "arch/mips/pmcs-msp71xx/Kconfig"
817 source "arch/mips/powertv/Kconfig"
818 source "arch/mips/ralink/Kconfig"
819 source "arch/mips/sgi-ip27/Kconfig"
820 source "arch/mips/sibyte/Kconfig"
821 source "arch/mips/txx9/Kconfig"
822 source "arch/mips/vr41xx/Kconfig"
823 source "arch/mips/cavium-octeon/Kconfig"
824 source "arch/mips/loongson/Kconfig"
825 source "arch/mips/loongson1/Kconfig"
826 source "arch/mips/netlogic/Kconfig"
830 config RWSEM_GENERIC_SPINLOCK
834 config RWSEM_XCHGADD_ALGORITHM
837 config ARCH_HAS_ILOG2_U32
841 config ARCH_HAS_ILOG2_U64
845 config GENERIC_HWEIGHT
849 config GENERIC_CALIBRATE_DELAY
853 config SCHED_OMIT_FRAME_POINTER
858 # Select some configuration options automatically based on user selections.
863 config ARCH_MAY_HAVE_PC_FDC
909 select ARCH_REQUIRE_GPIOLIB
915 config ARCH_DMA_ADDR_T_64BIT
916 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
921 config DMA_NONCOHERENT
923 select NEED_DMA_MAP_STATE
925 config NEED_DMA_MAP_STATE
928 config SYS_HAS_EARLY_PRINTK
932 bool "Support for hot-pluggable CPUs"
933 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
935 Say Y here to allow turning CPUs off and on. CPUs can be
936 controlled through /sys/devices/system/cpu.
937 (Note: power management support will enable this option
938 automatically on SMP systems. )
939 Say N if you want to disable CPU hotplug.
941 config SYS_SUPPORTS_HOTPLUG_CPU
965 config GENERIC_ISA_DMA
967 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
970 config GENERIC_ISA_DMA_SUPPORT_BROKEN
972 select GENERIC_ISA_DMA
981 # Endianness selection. Sufficiently obscure so many users don't know what to
982 # answer,so we try hard to limit the available choices. Also the use of a
983 # choice statement should be more obvious to the user.
986 prompt "Endianness selection"
988 Some MIPS machines can be configured for either little or big endian
989 byte order. These modes require different kernels and a different
990 Linux distribution. In general there is one preferred byteorder for a
991 particular system but some systems are just as commonly used in the
992 one or the other endianness.
994 config CPU_BIG_ENDIAN
996 depends on SYS_SUPPORTS_BIG_ENDIAN
998 config CPU_LITTLE_ENDIAN
1000 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1007 config SYS_SUPPORTS_APM_EMULATION
1010 config SYS_SUPPORTS_BIG_ENDIAN
1013 config SYS_SUPPORTS_LITTLE_ENDIAN
1016 config SYS_SUPPORTS_HUGETLBFS
1018 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1021 config MIPS_HUGE_TLB_SUPPORT
1022 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1045 config PCI_GT64XXX_PCI0
1048 config NO_EXCEPT_FILL
1055 select DMA_NONCOHERENT
1057 select SWAP_IO_SPACE
1058 select SYS_HAS_CPU_R5500
1059 select SYS_SUPPORTS_32BIT_KERNEL
1060 select SYS_SUPPORTS_64BIT_KERNEL
1061 select SYS_SUPPORTS_BIG_ENDIAN
1068 select DMA_NONCOHERENT
1069 select SYS_HAS_CPU_MIPS32_R2
1070 select SYS_SUPPORTS_32BIT_KERNEL
1071 select SYS_SUPPORTS_LITTLE_ENDIAN
1072 select SYS_SUPPORTS_BIG_ENDIAN
1073 select CPU_MIPSR2_IRQ_VI
1079 config SWAP_IO_SPACE
1082 config SGI_HAS_INDYDOG
1094 config SGI_HAS_ZILOG
1097 config SGI_HAS_I8042
1100 config DEFAULT_SGI_PARTITION
1112 config MIPS_L1_CACHE_SHIFT
1114 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1115 default "6" if MIPS_CPU_SCACHE
1116 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1119 config HAVE_STD_PC_SERIAL_PORT
1123 bool "ARC console support"
1124 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1128 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1133 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1142 menu "CPU selection"
1148 config CPU_LOONGSON2E
1150 depends on SYS_HAS_CPU_LOONGSON2E
1151 select CPU_LOONGSON2
1153 The Loongson 2E processor implements the MIPS III instruction set
1154 with many extensions.
1156 It has an internal FPGA northbridge, which is compatible to
1159 config CPU_LOONGSON2F
1161 depends on SYS_HAS_CPU_LOONGSON2F
1162 select CPU_LOONGSON2
1163 select ARCH_REQUIRE_GPIOLIB
1165 The Loongson 2F processor implements the MIPS III instruction set
1166 with many extensions.
1168 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1169 have a similar programming interface with FPGA northbridge used in
1172 config CPU_LOONGSON1B
1174 depends on SYS_HAS_CPU_LOONGSON1B
1175 select CPU_LOONGSON1
1177 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1178 release 2 instruction set.
1180 config CPU_MIPS32_R1
1181 bool "MIPS32 Release 1"
1182 depends on SYS_HAS_CPU_MIPS32_R1
1183 select CPU_HAS_PREFETCH
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1187 Choose this option to build a kernel for release 1 or later of the
1188 MIPS32 architecture. Most modern embedded systems with a 32-bit
1189 MIPS processor are based on a MIPS32 processor. If you know the
1190 specific type of processor in your system, choose those that one
1191 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1192 Release 2 of the MIPS32 architecture is available since several
1193 years so chances are you even have a MIPS32 Release 2 processor
1194 in which case you should choose CPU_MIPS32_R2 instead for better
1197 config CPU_MIPS32_R2
1198 bool "MIPS32 Release 2"
1199 depends on SYS_HAS_CPU_MIPS32_R2
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_HIGHMEM
1205 Choose this option to build a kernel for release 2 or later of the
1206 MIPS32 architecture. Most modern embedded systems with a 32-bit
1207 MIPS processor are based on a MIPS32 processor. If you know the
1208 specific type of processor in your system, choose those that one
1209 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1211 config CPU_MIPS64_R1
1212 bool "MIPS64 Release 1"
1213 depends on SYS_HAS_CPU_MIPS64_R1
1214 select CPU_HAS_PREFETCH
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1217 select CPU_SUPPORTS_HIGHMEM
1218 select CPU_SUPPORTS_HUGEPAGES
1220 Choose this option to build a kernel for release 1 or later of the
1221 MIPS64 architecture. Many modern embedded systems with a 64-bit
1222 MIPS processor are based on a MIPS64 processor. If you know the
1223 specific type of processor in your system, choose those that one
1224 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1225 Release 2 of the MIPS64 architecture is available since several
1226 years so chances are you even have a MIPS64 Release 2 processor
1227 in which case you should choose CPU_MIPS64_R2 instead for better
1230 config CPU_MIPS64_R2
1231 bool "MIPS64 Release 2"
1232 depends on SYS_HAS_CPU_MIPS64_R2
1233 select CPU_HAS_PREFETCH
1234 select CPU_SUPPORTS_32BIT_KERNEL
1235 select CPU_SUPPORTS_64BIT_KERNEL
1236 select CPU_SUPPORTS_HIGHMEM
1237 select CPU_SUPPORTS_HUGEPAGES
1239 Choose this option to build a kernel for release 2 or later of the
1240 MIPS64 architecture. Many modern embedded systems with a 64-bit
1241 MIPS processor are based on a MIPS64 processor. If you know the
1242 specific type of processor in your system, choose those that one
1243 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1247 depends on SYS_HAS_CPU_R3000
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_HIGHMEM
1252 Please make sure to pick the right CPU type. Linux/MIPS is not
1253 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1254 *not* work on R4000 machines and vice versa. However, since most
1255 of the supported machines have an R4000 (or similar) CPU, R4x00
1256 might be a safe bet. If the resulting kernel does not work,
1257 try to recompile with R3000.
1261 depends on SYS_HAS_CPU_TX39XX
1262 select CPU_SUPPORTS_32BIT_KERNEL
1266 depends on SYS_HAS_CPU_VR41XX
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1270 The options selects support for the NEC VR4100 series of processors.
1271 Only choose this option if you have one of these processors as a
1272 kernel built with this option will not run on any other type of
1273 processor or vice versa.
1277 depends on SYS_HAS_CPU_R4300
1278 select CPU_SUPPORTS_32BIT_KERNEL
1279 select CPU_SUPPORTS_64BIT_KERNEL
1281 MIPS Technologies R4300-series processors.
1285 depends on SYS_HAS_CPU_R4X00
1286 select CPU_SUPPORTS_32BIT_KERNEL
1287 select CPU_SUPPORTS_64BIT_KERNEL
1288 select CPU_SUPPORTS_HUGEPAGES
1290 MIPS Technologies R4000-series processors other than 4300, including
1291 the R4000, R4400, R4600, and 4700.
1295 depends on SYS_HAS_CPU_TX49XX
1296 select CPU_HAS_PREFETCH
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1299 select CPU_SUPPORTS_HUGEPAGES
1303 depends on SYS_HAS_CPU_R5000
1304 select CPU_SUPPORTS_32BIT_KERNEL
1305 select CPU_SUPPORTS_64BIT_KERNEL
1306 select CPU_SUPPORTS_HUGEPAGES
1308 MIPS Technologies R5000-series processors other than the Nevada.
1312 depends on SYS_HAS_CPU_R5432
1313 select CPU_SUPPORTS_32BIT_KERNEL
1314 select CPU_SUPPORTS_64BIT_KERNEL
1315 select CPU_SUPPORTS_HUGEPAGES
1319 depends on SYS_HAS_CPU_R5500
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1322 select CPU_SUPPORTS_HUGEPAGES
1324 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1329 depends on SYS_HAS_CPU_R6000
1330 select CPU_SUPPORTS_32BIT_KERNEL
1332 MIPS Technologies R6000 and R6000A series processors. Note these
1333 processors are extremely rare and the support for them is incomplete.
1337 depends on SYS_HAS_CPU_NEVADA
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HUGEPAGES
1342 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1346 depends on SYS_HAS_CPU_R8000
1347 select CPU_HAS_PREFETCH
1348 select CPU_SUPPORTS_64BIT_KERNEL
1350 MIPS Technologies R8000 processors. Note these processors are
1351 uncommon and the support for them is incomplete.
1355 depends on SYS_HAS_CPU_R10000
1356 select CPU_HAS_PREFETCH
1357 select CPU_SUPPORTS_32BIT_KERNEL
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_HUGEPAGES
1362 MIPS Technologies R10000-series processors.
1366 depends on SYS_HAS_CPU_RM7000
1367 select CPU_HAS_PREFETCH
1368 select CPU_SUPPORTS_32BIT_KERNEL
1369 select CPU_SUPPORTS_64BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1371 select CPU_SUPPORTS_HUGEPAGES
1375 depends on SYS_HAS_CPU_SB1
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_64BIT_KERNEL
1378 select CPU_SUPPORTS_HIGHMEM
1379 select CPU_SUPPORTS_HUGEPAGES
1380 select WEAK_ORDERING
1382 config CPU_CAVIUM_OCTEON
1383 bool "Cavium Octeon processor"
1384 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1385 select ARCH_SPARSEMEM_ENABLE
1386 select CPU_HAS_PREFETCH
1387 select CPU_SUPPORTS_64BIT_KERNEL
1388 select SYS_SUPPORTS_SMP
1389 select NR_CPUS_DEFAULT_16
1390 select WEAK_ORDERING
1391 select CPU_SUPPORTS_HIGHMEM
1392 select CPU_SUPPORTS_HUGEPAGES
1395 select USB_EHCI_BIG_ENDIAN_MMIO
1397 The Cavium Octeon processor is a highly integrated chip containing
1398 many ethernet hardware widgets for networking tasks. The processor
1399 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1400 Full details can be found at http://www.caviumnetworks.com.
1402 config CPU_BMIPS3300
1404 depends on SYS_HAS_CPU_BMIPS3300
1407 Broadcom BMIPS3300 processors.
1409 config CPU_BMIPS4350
1411 depends on SYS_HAS_CPU_BMIPS4350
1413 select SYS_SUPPORTS_SMP
1414 select SYS_SUPPORTS_HOTPLUG_CPU
1416 Broadcom BMIPS4350 ("VIPER") processors.
1418 config CPU_BMIPS4380
1420 depends on SYS_HAS_CPU_BMIPS4380
1422 select SYS_SUPPORTS_SMP
1423 select SYS_SUPPORTS_HOTPLUG_CPU
1425 Broadcom BMIPS4380 processors.
1427 config CPU_BMIPS5000
1429 depends on SYS_HAS_CPU_BMIPS5000
1431 select CPU_SUPPORTS_HIGHMEM
1432 select MIPS_CPU_SCACHE
1433 select SYS_SUPPORTS_SMP
1434 select SYS_SUPPORTS_HOTPLUG_CPU
1436 Broadcom BMIPS5000 processors.
1439 bool "Netlogic XLR SoC"
1440 depends on SYS_HAS_CPU_XLR
1441 select CPU_SUPPORTS_32BIT_KERNEL
1442 select CPU_SUPPORTS_64BIT_KERNEL
1443 select CPU_SUPPORTS_HIGHMEM
1444 select CPU_SUPPORTS_HUGEPAGES
1445 select WEAK_ORDERING
1446 select WEAK_REORDERING_BEYOND_LLSC
1448 Netlogic Microsystems XLR/XLS processors.
1451 bool "Netlogic XLP SoC"
1452 depends on SYS_HAS_CPU_XLP
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_64BIT_KERNEL
1455 select CPU_SUPPORTS_HIGHMEM
1456 select WEAK_ORDERING
1457 select WEAK_REORDERING_BEYOND_LLSC
1458 select CPU_HAS_PREFETCH
1461 Netlogic Microsystems XLP processors.
1465 config CPU_NOP_WORKAROUNDS
1468 config CPU_JUMP_WORKAROUNDS
1471 config CPU_LOONGSON2F_WORKAROUNDS
1472 bool "Loongson 2F Workarounds"
1474 select CPU_NOP_WORKAROUNDS
1475 select CPU_JUMP_WORKAROUNDS
1477 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1478 require workarounds. Without workarounds the system may hang
1479 unexpectedly. For more information please refer to the gas
1480 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1482 Loongson 2F03 and later have fixed these issues and no workarounds
1483 are needed. The workarounds have no significant side effect on them
1484 but may decrease the performance of the system so this option should
1485 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1488 If unsure, please say Y.
1489 endif # CPU_LOONGSON2F
1491 config SYS_SUPPORTS_ZBOOT
1493 select HAVE_KERNEL_GZIP
1494 select HAVE_KERNEL_BZIP2
1495 select HAVE_KERNEL_LZ4
1496 select HAVE_KERNEL_LZMA
1497 select HAVE_KERNEL_LZO
1498 select HAVE_KERNEL_XZ
1500 config SYS_SUPPORTS_ZBOOT_UART16550
1502 select SYS_SUPPORTS_ZBOOT
1504 config CPU_LOONGSON2
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1509 select CPU_SUPPORTS_HUGEPAGES
1511 config CPU_LOONGSON1
1515 select CPU_HAS_PREFETCH
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_HIGHMEM
1522 select CPU_SUPPORTS_32BIT_KERNEL
1523 select DMA_NONCOHERENT
1525 select SWAP_IO_SPACE
1526 select WEAK_ORDERING
1528 config SYS_HAS_CPU_LOONGSON2E
1531 config SYS_HAS_CPU_LOONGSON2F
1533 select CPU_SUPPORTS_CPUFREQ
1534 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1535 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1537 config SYS_HAS_CPU_LOONGSON1B
1540 config SYS_HAS_CPU_MIPS32_R1
1543 config SYS_HAS_CPU_MIPS32_R2
1546 config SYS_HAS_CPU_MIPS64_R1
1549 config SYS_HAS_CPU_MIPS64_R2
1552 config SYS_HAS_CPU_R3000
1555 config SYS_HAS_CPU_TX39XX
1558 config SYS_HAS_CPU_VR41XX
1561 config SYS_HAS_CPU_R4300
1564 config SYS_HAS_CPU_R4X00
1567 config SYS_HAS_CPU_TX49XX
1570 config SYS_HAS_CPU_R5000
1573 config SYS_HAS_CPU_R5432
1576 config SYS_HAS_CPU_R5500
1579 config SYS_HAS_CPU_R6000
1582 config SYS_HAS_CPU_NEVADA
1585 config SYS_HAS_CPU_R8000
1588 config SYS_HAS_CPU_R10000
1591 config SYS_HAS_CPU_RM7000
1594 config SYS_HAS_CPU_SB1
1597 config SYS_HAS_CPU_CAVIUM_OCTEON
1600 config SYS_HAS_CPU_BMIPS3300
1603 config SYS_HAS_CPU_BMIPS4350
1606 config SYS_HAS_CPU_BMIPS4380
1609 config SYS_HAS_CPU_BMIPS5000
1612 config SYS_HAS_CPU_XLR
1615 config SYS_HAS_CPU_XLP
1619 # CPU may reorder R->R, R->W, W->R, W->W
1620 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1622 config WEAK_ORDERING
1626 # CPU may reorder reads and writes beyond LL/SC
1627 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1629 config WEAK_REORDERING_BEYOND_LLSC
1634 # These two indicate any level of the MIPS32 and MIPS64 architecture
1638 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1642 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1645 # These two indicate the revision of the architecture, either Release 1 or Release 2
1649 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1653 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1655 config SYS_SUPPORTS_32BIT_KERNEL
1657 config SYS_SUPPORTS_64BIT_KERNEL
1659 config CPU_SUPPORTS_32BIT_KERNEL
1661 config CPU_SUPPORTS_64BIT_KERNEL
1663 config CPU_SUPPORTS_CPUFREQ
1665 config CPU_SUPPORTS_ADDRWINCFG
1667 config CPU_SUPPORTS_HUGEPAGES
1669 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1671 config MIPS_PGD_C0_CONTEXT
1673 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1676 # Set to y for ptrace access to watch registers.
1678 config HARDWARE_WATCHPOINTS
1680 default y if CPU_MIPSR1 || CPU_MIPSR2
1685 prompt "Kernel code model"
1687 You should only select this option if you have a workload that
1688 actually benefits from 64-bit processing or if your machine has
1689 large memory. You will only be presented a single option in this
1690 menu if your system does not support both 32-bit and 64-bit kernels.
1693 bool "32-bit kernel"
1694 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1697 Select this option if you want to build a 32-bit kernel.
1699 bool "64-bit kernel"
1700 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1702 Select this option if you want to build a 64-bit kernel.
1707 bool "KVM Guest Kernel"
1708 depends on BROKEN_ON_SMP
1710 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1712 config KVM_HOST_FREQ
1713 int "KVM Host Processor Frequency (MHz)"
1714 depends on KVM_GUEST
1717 Select this option if building a guest kernel for KVM to skip
1718 RTC emulation when determining guest CPU Frequency. Instead, the guest
1719 processor frequency is automatically derived from the host frequency.
1722 prompt "Kernel page size"
1723 default PAGE_SIZE_4KB
1725 config PAGE_SIZE_4KB
1727 depends on !CPU_LOONGSON2
1729 This option select the standard 4kB Linux page size. On some
1730 R3000-family processors this is the only available page size. Using
1731 4kB page size will minimize memory consumption and is therefore
1732 recommended for low memory systems.
1734 config PAGE_SIZE_8KB
1736 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1738 Using 8kB page size will result in higher performance kernel at
1739 the price of higher memory consumption. This option is available
1740 only on R8000 and cnMIPS processors. Note that you will need a
1741 suitable Linux distribution to support this.
1743 config PAGE_SIZE_16KB
1745 depends on !CPU_R3000 && !CPU_TX39XX
1747 Using 16kB page size will result in higher performance kernel at
1748 the price of higher memory consumption. This option is available on
1749 all non-R3000 family processors. Note that you will need a suitable
1750 Linux distribution to support this.
1752 config PAGE_SIZE_32KB
1754 depends on CPU_CAVIUM_OCTEON
1756 Using 32kB page size will result in higher performance kernel at
1757 the price of higher memory consumption. This option is available
1758 only on cnMIPS cores. Note that you will need a suitable Linux
1759 distribution to support this.
1761 config PAGE_SIZE_64KB
1763 depends on !CPU_R3000 && !CPU_TX39XX
1765 Using 64kB page size will result in higher performance kernel at
1766 the price of higher memory consumption. This option is available on
1767 all non-R3000 family processor. Not that at the time of this
1768 writing this option is still high experimental.
1772 config FORCE_MAX_ZONEORDER
1773 int "Maximum zone order"
1774 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1775 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1776 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1777 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1778 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1779 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1783 The kernel memory allocator divides physically contiguous memory
1784 blocks into "zones", where each zone is a power of two number of
1785 pages. This option selects the largest power of two that the kernel
1786 keeps in the memory allocator. If you need to allocate very large
1787 blocks of physically contiguous memory, then you may need to
1788 increase this value.
1790 This config option is actually maximum order plus one. For example,
1791 a value of 11 means that the largest free memory block is 2^10 pages.
1793 The page size is not necessarily 4KB. Keep this in mind
1794 when choosing a value for this option.
1797 bool "Use GIC global counter for clock events"
1798 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1800 Use the GIC global counter for the clock events. The R4K clock
1801 event driver is always present, so if the platform ends up not
1802 detecting a GIC, it will fall back to the R4K timer for the
1803 generation of clock events.
1808 config IP22_CPU_SCACHE
1813 # Support for a MIPS32 / MIPS64 style S-caches
1815 config MIPS_CPU_SCACHE
1819 config R5000_CPU_SCACHE
1823 config RM7000_CPU_SCACHE
1827 config SIBYTE_DMA_PAGEOPS
1828 bool "Use DMA to clear/copy pages"
1831 Instead of using the CPU to zero and copy pages, use a Data Mover
1832 channel. These DMA channels are otherwise unused by the standard
1833 SiByte Linux port. Seems to give a small performance benefit.
1835 config CPU_HAS_PREFETCH
1838 config CPU_GENERIC_DUMP_TLB
1840 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1844 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1846 config CPU_R4K_CACHE_TLB
1848 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1851 prompt "MIPS MT options"
1853 config MIPS_MT_DISABLED
1854 bool "Disable multithreading support."
1856 Use this option if your workload can't take advantage of
1857 MIPS hardware multithreading support. On systems that don't have
1858 the option of an MT-enabled processor this option will be the only
1859 option in this menu.
1862 bool "Use 1 TC on each available VPE for SMP"
1863 depends on SYS_SUPPORTS_MULTITHREADING
1864 select CPU_MIPSR2_IRQ_VI
1865 select CPU_MIPSR2_IRQ_EI
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
1987 select SYS_SUPPORTS_SMP
1988 select SYS_SUPPORTS_SCHED_SMT if SMP
1989 select WEAK_ORDERING
1992 This is a placeholder option for the GCMP work. It will need to
1993 be handled differently...
1995 config SB1_PASS_1_WORKAROUNDS
1997 depends on CPU_SB1_PASS_1
2000 config SB1_PASS_2_WORKAROUNDS
2002 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2005 config SB1_PASS_2_1_WORKAROUNDS
2007 depends on CPU_SB1 && CPU_SB1_PASS_2
2011 config 64BIT_PHYS_ADDR
2014 config ARCH_PHYS_ADDR_T_64BIT
2015 def_bool 64BIT_PHYS_ADDR
2017 config CPU_HAS_SMARTMIPS
2018 depends on SYS_SUPPORTS_SMARTMIPS
2019 bool "Support for the SmartMIPS ASE"
2021 SmartMIPS is a extension of the MIPS32 architecture aimed at
2022 increased security at both hardware and software level for
2023 smartcards. Enabling this option will allow proper use of the
2024 SmartMIPS instructions by Linux applications. However a kernel with
2025 this option will not work on a MIPS core without SmartMIPS core. If
2026 you don't know you probably don't have SmartMIPS and should say N
2029 config CPU_MICROMIPS
2030 depends on SYS_SUPPORTS_MICROMIPS
2031 bool "Build kernel using microMIPS ISA"
2033 When this option is enabled the kernel will be built using the
2043 # Vectored interrupt mode is an R2 feature
2045 config CPU_MIPSR2_IRQ_VI
2049 # Extended interrupt mode is an R2 feature
2051 config CPU_MIPSR2_IRQ_EI
2056 depends on !CPU_R3000
2062 config CPU_DADDI_WORKAROUNDS
2065 config CPU_R4000_WORKAROUNDS
2067 select CPU_R4400_WORKAROUNDS
2069 config CPU_R4400_WORKAROUNDS
2073 # - Highmem only makes sense for the 32-bit kernel.
2074 # - The current highmem code will only work properly on physically indexed
2075 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2076 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2077 # moment we protect the user and offer the highmem option only on machines
2078 # where it's known to be safe. This will not offer highmem on a few systems
2079 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2080 # indexed CPUs but we're playing safe.
2081 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2082 # know they might have memory configurations that could make use of highmem
2086 bool "High Memory Support"
2087 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2089 config CPU_SUPPORTS_HIGHMEM
2092 config SYS_SUPPORTS_HIGHMEM
2095 config SYS_SUPPORTS_SMARTMIPS
2098 config SYS_SUPPORTS_MICROMIPS
2101 config ARCH_FLATMEM_ENABLE
2103 depends on !NUMA && !CPU_LOONGSON2
2105 config ARCH_DISCONTIGMEM_ENABLE
2107 default y if SGI_IP27
2109 Say Y to support efficient handling of discontiguous physical memory,
2110 for architectures which are either NUMA (Non-Uniform Memory Access)
2111 or have huge holes in the physical address space for other reasons.
2112 See <file:Documentation/vm/numa> for more.
2114 config ARCH_SPARSEMEM_ENABLE
2116 select SPARSEMEM_STATIC
2120 depends on SYS_SUPPORTS_NUMA
2122 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2123 Access). This option improves performance on systems with more
2124 than two nodes; on two node systems it is generally better to
2125 leave it disabled; on single node systems disable this option
2128 config SYS_SUPPORTS_NUMA
2134 depends on NEED_MULTIPLE_NODES
2136 config HW_PERF_EVENTS
2137 bool "Enable hardware performance counter support for perf events"
2138 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2141 Enable hardware performance counter support for perf events. If
2142 disabled, perf events will use software events only.
2147 bool "Multi-Processing support"
2148 depends on SYS_SUPPORTS_SMP
2149 select USE_GENERIC_SMP_HELPERS
2151 This enables support for systems with more than one CPU. If you have
2152 a system with only one CPU, like most personal computers, say N. If
2153 you have a system with more than one CPU, say Y.
2155 If you say N here, the kernel will run on single and multiprocessor
2156 machines, but will use only one CPU of a multiprocessor machine. If
2157 you say Y here, the kernel will run on many, but not all,
2158 singleprocessor machines. On a singleprocessor machine, the kernel
2159 will run faster if you say N here.
2161 People using multiprocessor machines who say Y here should also say
2162 Y to "Enhanced Real Time Clock Support", below.
2164 See also the SMP-HOWTO available at
2165 <http://www.tldp.org/docs.html#howto>.
2167 If you don't know what to do here, say N.
2172 config SYS_SUPPORTS_MIPS_CMP
2175 config SYS_SUPPORTS_SMP
2178 config NR_CPUS_DEFAULT_4
2181 config NR_CPUS_DEFAULT_8
2184 config NR_CPUS_DEFAULT_16
2187 config NR_CPUS_DEFAULT_32
2190 config NR_CPUS_DEFAULT_64
2194 int "Maximum number of CPUs (2-64)"
2197 default "4" if NR_CPUS_DEFAULT_4
2198 default "8" if NR_CPUS_DEFAULT_8
2199 default "16" if NR_CPUS_DEFAULT_16
2200 default "32" if NR_CPUS_DEFAULT_32
2201 default "64" if NR_CPUS_DEFAULT_64
2203 This allows you to specify the maximum number of CPUs which this
2204 kernel will support. The maximum supported value is 32 for 32-bit
2205 kernel and 64 for 64-bit kernels; the minimum value which makes
2206 sense is 1 for Qemu (useful only for kernel debugging purposes)
2207 and 2 for all others.
2209 This is purely to save memory - each supported CPU adds
2210 approximately eight kilobytes to the kernel image. For best
2211 performance should round up your number of processors to the next
2214 config MIPS_PERF_SHARED_TC_COUNTERS
2218 # Timer Interrupt Frequency Configuration
2222 prompt "Timer frequency"
2225 Allows the configuration of the timer frequency.
2228 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2231 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2234 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2240 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2243 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2246 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2250 config SYS_SUPPORTS_48HZ
2253 config SYS_SUPPORTS_100HZ
2256 config SYS_SUPPORTS_128HZ
2259 config SYS_SUPPORTS_250HZ
2262 config SYS_SUPPORTS_256HZ
2265 config SYS_SUPPORTS_1000HZ
2268 config SYS_SUPPORTS_1024HZ
2271 config SYS_SUPPORTS_ARBIT_HZ
2273 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2274 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2275 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2276 !SYS_SUPPORTS_1024HZ
2281 default 100 if HZ_100
2282 default 128 if HZ_128
2283 default 250 if HZ_250
2284 default 256 if HZ_256
2285 default 1000 if HZ_1000
2286 default 1024 if HZ_1024
2288 source "kernel/Kconfig.preempt"
2291 bool "Kexec system call"
2293 kexec is a system call that implements the ability to shutdown your
2294 current kernel, and to start another kernel. It is like a reboot
2295 but it is independent of the system firmware. And like a reboot
2296 you can start any kernel with it, not just Linux.
2298 The name comes from the similarity to the exec system call.
2300 It is an ongoing process to be certain the hardware in a machine
2301 is properly shutdown, so do not be surprised if this code does not
2302 initially work for you. As of this writing the exact hardware
2303 interface is strongly in flux, so no good recommendation can be
2307 bool "Kernel crash dumps"
2309 Generate crash dump after being started by kexec.
2310 This should be normally only set in special crash dump kernels
2311 which are loaded in the main kernel with kexec-tools into
2312 a specially reserved region and then later executed after
2313 a crash by kdump/kexec. The crash dump kernel must be compiled
2314 to a memory address not used by the main kernel or firmware using
2317 config PHYSICAL_START
2318 hex "Physical address where the kernel is loaded"
2319 default "0xffffffff84000000" if 64BIT
2320 default "0x84000000" if 32BIT
2321 depends on CRASH_DUMP
2323 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2324 If you plan to use kernel for capturing the crash dump change
2325 this value to start of the reserved region (the "X" value as
2326 specified in the "crashkernel=YM@XM" command line boot parameter
2327 passed to the panic-ed kernel).
2330 bool "Enable seccomp to safely compute untrusted bytecode"
2334 This kernel feature is useful for number crunching applications
2335 that may need to compute untrusted bytecode during their
2336 execution. By using pipes or other transports made available to
2337 the process as file descriptors supporting the read/write
2338 syscalls, it's possible to isolate those applications in
2339 their own address space using seccomp. Once seccomp is
2340 enabled via /proc/<pid>/seccomp, it cannot be disabled
2341 and the task is only allowed to execute a few safe syscalls
2342 defined by each seccomp mode.
2344 If unsure, say Y. Only embedded should say N here.
2346 config CC_STACKPROTECTOR
2347 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2349 This option turns on the -fstack-protector GCC feature. This
2350 feature puts, at the beginning of functions, a canary value on
2351 the stack just before the return address, and validates
2352 the value just before actually returning. Stack based buffer
2353 overflows (that need to overwrite this return address) now also
2354 overwrite the canary, which gets detected and the attack is then
2355 neutralized via a kernel panic.
2357 This feature requires gcc version 4.2 or above.
2362 select OF_EARLY_FLATTREE
2367 config LOCKDEP_SUPPORT
2371 config STACKTRACE_SUPPORT
2375 source "init/Kconfig"
2377 source "kernel/Kconfig.freezer"
2379 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2387 bool "Support for PCI controller"
2388 depends on HW_HAS_PCI
2390 select NO_GENERIC_PCI_IOPORT_MAP
2392 Find out whether you have a PCI motherboard. PCI is the name of a
2393 bus system, i.e. the way the CPU talks to the other stuff inside
2394 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2400 source "drivers/pci/Kconfig"
2402 source "drivers/pci/pcie/Kconfig"
2405 # ISA support is now enabled via select. Too many systems still have the one
2406 # or other ISA chip on the board that users don't know about so don't expect
2407 # users to choose the right thing ...
2414 depends on HW_HAS_EISA
2416 select GENERIC_ISA_DMA
2418 The Extended Industry Standard Architecture (EISA) bus was
2419 developed as an open alternative to the IBM MicroChannel bus.
2421 The EISA bus provided some of the features of the IBM MicroChannel
2422 bus while maintaining backward compatibility with cards made for
2423 the older ISA bus. The EISA bus saw limited use between 1988 and
2424 1995 when it was made obsolete by the PCI bus.
2426 Say Y here if you are building a kernel for an EISA-based machine.
2430 source "drivers/eisa/Kconfig"
2433 bool "TURBOchannel support"
2434 depends on MACH_DECSTATION
2436 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2437 processors. TURBOchannel programming specifications are available
2439 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2441 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2442 Linux driver support status is documented at:
2443 <http://www.linux-mips.org/wiki/DECstation>
2453 select MIPS_EXTERNAL_TIMER
2461 source "drivers/pcmcia/Kconfig"
2463 source "drivers/pci/hotplug/Kconfig"
2466 bool "RapidIO support"
2470 If you say Y here, the kernel will include drivers and
2471 infrastructure code to support RapidIO interconnect devices.
2473 source "drivers/rapidio/Kconfig"
2477 menu "Executable file formats"
2479 source "fs/Kconfig.binfmt"
2484 config MIPS32_COMPAT
2485 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2488 Select this option if you want Linux/MIPS 32-bit binary
2489 compatibility. Since all software available for Linux/MIPS is
2490 currently 32-bit you should say Y here.
2494 depends on MIPS32_COMPAT
2495 select ARCH_WANT_OLD_COMPAT_IPC
2498 config SYSVIPC_COMPAT
2500 depends on COMPAT && SYSVIPC
2504 bool "Kernel support for o32 binaries"
2505 depends on MIPS32_COMPAT
2507 Select this option if you want to run o32 binaries. These are pure
2508 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2509 existing binaries are in this format.
2514 bool "Kernel support for n32 binaries"
2515 depends on MIPS32_COMPAT
2517 Select this option if you want to run n32 binaries. These are
2518 64-bit binaries using 32-bit quantities for addressing and certain
2519 data that would normally be 64-bit. They are used in special
2526 default y if MIPS32_O32 || MIPS32_N32
2530 menu "Power management options"
2532 config ARCH_HIBERNATION_POSSIBLE
2534 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2536 config ARCH_SUSPEND_POSSIBLE
2538 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2540 source "kernel/power/Kconfig"
2544 config MIPS_EXTERNAL_TIMER
2547 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2548 menu "CPU Power Management"
2549 source "drivers/cpufreq/Kconfig"
2553 source "net/Kconfig"
2555 source "drivers/Kconfig"
2557 source "drivers/firmware/Kconfig"
2561 source "arch/mips/Kconfig.debug"
2563 source "security/Kconfig"
2565 source "crypto/Kconfig"
2567 source "lib/Kconfig"
2569 source "arch/mips/kvm/Kconfig"