4 select HAVE_GENERIC_DMA_COHERENT
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
10 select ARCH_HAVE_CUSTOM_GPIO_H
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select HAVE_DEBUG_KMEMLEAK
20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
21 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
22 select RTC_LIB if !MACH_LOONGSON
23 select GENERIC_ATOMIC64 if !64BIT
24 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
26 select HAVE_DMA_API_DEBUG
27 select HAVE_GENERIC_HARDIRQS
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select HAVE_ARCH_JUMP_LABEL
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select IRQ_FORCED_THREADING
34 select HAVE_MEMBLOCK_NODE_MAP
35 select ARCH_DISCARD_MEMBLOCK
36 select GENERIC_SMP_IDLE_THREAD
37 select BUILDTIME_EXTABLE_SORT
38 select GENERIC_CLOCKEVENTS
39 select GENERIC_CMOS_UPDATE
40 select HAVE_MOD_ARCH_SPECIFIC
42 select MODULES_USE_ELF_REL if MODULES
43 select MODULES_USE_ELF_RELA if MODULES && 64BIT
44 select CLONE_BACKWARDS
46 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
65 select ARCH_WANT_OPTIONAL_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
101 select SYS_HAS_CPU_MIPS32_R2
102 select SYS_HAS_EARLY_PRINTK
103 select SYS_SUPPORTS_32BIT_KERNEL
104 select SYS_SUPPORTS_BIG_ENDIAN
106 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
109 bool "Broadcom BCM47XX based boards"
110 select ARCH_WANT_OPTIONAL_GPIOLIB
114 select DMA_NONCOHERENT
118 select 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"
129 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_MIPS32_R1
132 select SYS_SUPPORTS_32BIT_KERNEL
133 select SYS_SUPPORTS_BIG_ENDIAN
134 select SYS_HAS_EARLY_PRINTK
136 select ARCH_REQUIRE_GPIOLIB
139 Support for BCM63XX based boards
146 select DMA_NONCOHERENT
152 select PCI_GT64XXX_PCI0
154 select SYS_HAS_CPU_NEVADA
155 select SYS_HAS_EARLY_PRINTK
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_64BIT_KERNEL
158 select SYS_SUPPORTS_LITTLE_ENDIAN
160 config MACH_DECSTATION
167 select CPU_DADDI_WORKAROUNDS if 64BIT
168 select CPU_R4000_WORKAROUNDS if 64BIT
169 select CPU_R4400_WORKAROUNDS if 64BIT
170 select DMA_NONCOHERENT
173 select SYS_HAS_CPU_R3000
174 select SYS_HAS_CPU_R4X00
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_SUPPORTS_64BIT_KERNEL
177 select SYS_SUPPORTS_LITTLE_ENDIAN
178 select SYS_SUPPORTS_128HZ
179 select SYS_SUPPORTS_256HZ
180 select SYS_SUPPORTS_1024HZ
182 This enables support for DEC's MIPS based workstations. For details
183 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
184 DECstation porting pages on <http://decstation.unix-ag.org/>.
186 If you have one of the following DECstation Models you definitely
187 want to choose R4xx0 for the CPU Type:
194 otherwise choose R3000.
197 bool "Jazz family of machines"
200 select ARCH_MAY_HAVE_PC_FDC
203 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
204 select GENERIC_ISA_DMA
205 select HAVE_PCSPKR_PLATFORM
210 select SYS_HAS_CPU_R4X00
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_64BIT_KERNEL
213 select SYS_SUPPORTS_100HZ
215 This a family of machines based on the MIPS R4030 chipset which was
216 used by several vendors to build RISC/os and Windows NT workstations.
217 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
218 Olivetti M700-10 workstations.
221 bool "Ingenic JZ4740 based machines"
222 select SYS_HAS_CPU_MIPS32_R1
223 select SYS_SUPPORTS_32BIT_KERNEL
224 select SYS_SUPPORTS_LITTLE_ENDIAN
225 select SYS_SUPPORTS_ZBOOT_UART16550
226 select DMA_NONCOHERENT
229 select ARCH_REQUIRE_GPIOLIB
230 select SYS_HAS_EARLY_PRINTK
233 select GENERIC_IRQ_CHIP
236 bool "Lantiq based platforms"
237 select DMA_NONCOHERENT
241 select SYS_HAS_CPU_MIPS32_R1
242 select SYS_HAS_CPU_MIPS32_R2
243 select SYS_SUPPORTS_BIG_ENDIAN
244 select SYS_SUPPORTS_32BIT_KERNEL
245 select SYS_SUPPORTS_MULTITHREADING
246 select SYS_HAS_EARLY_PRINTK
247 select ARCH_REQUIRE_GPIOLIB
250 select HAVE_MACH_CLKDEV
254 select PINCTRL_LANTIQ
257 bool "LASAT Networks platforms"
260 select DMA_NONCOHERENT
261 select SYS_HAS_EARLY_PRINTK
264 select PCI_GT64XXX_PCI0
266 select R5000_CPU_SCACHE
267 select SYS_HAS_CPU_R5000
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
270 select SYS_SUPPORTS_LITTLE_ENDIAN
273 bool "Loongson family of machines"
274 select SYS_SUPPORTS_ZBOOT
276 This enables the support of Loongson family of machines.
278 Loongson is a family of general-purpose MIPS-compatible CPUs.
279 developed at Institute of Computing Technology (ICT),
280 Chinese Academy of Sciences (CAS) in the People's Republic
281 of China. The chief architect is Professor Weiwu Hu.
283 config MACH_LOONGSON1
284 bool "Loongson 1 family of machines"
285 select SYS_SUPPORTS_ZBOOT
287 This enables support for the Loongson 1 based machines.
289 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
290 the ICT (Institute of Computing Technology) and the Chinese Academy
294 bool "MIPS Malta board"
295 select ARCH_MAY_HAVE_PC_FDC
301 select DMA_NONCOHERENT
302 select GENERIC_ISA_DMA
303 select HAVE_PCSPKR_PLATFORM
310 select MIPS_CPU_SCACHE
311 select PCI_GT64XXX_PCI0
314 select SYS_HAS_CPU_MIPS32_R1
315 select SYS_HAS_CPU_MIPS32_R2
316 select SYS_HAS_CPU_MIPS64_R1
317 select SYS_HAS_CPU_MIPS64_R2
318 select SYS_HAS_CPU_NEVADA
319 select SYS_HAS_CPU_RM7000
320 select SYS_HAS_EARLY_PRINTK
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_64BIT_KERNEL
323 select SYS_SUPPORTS_BIG_ENDIAN
324 select SYS_SUPPORTS_LITTLE_ENDIAN
325 select SYS_SUPPORTS_MIPS_CMP
326 select SYS_SUPPORTS_MULTITHREADING
327 select SYS_SUPPORTS_SMARTMIPS
328 select SYS_SUPPORTS_ZBOOT
330 This enables support for the MIPS Technologies Malta evaluation
334 bool "MIPS SEAD3 board"
340 select CPU_MIPSR2_IRQ_VI
341 select CPU_MIPSR2_IRQ_EI
342 select DMA_NONCOHERENT
345 select MIPS_CPU_SCACHE
347 select SYS_HAS_CPU_MIPS32_R1
348 select SYS_HAS_CPU_MIPS32_R2
349 select SYS_HAS_CPU_MIPS64_R1
350 select SYS_HAS_EARLY_PRINTK
351 select SYS_SUPPORTS_32BIT_KERNEL
352 select SYS_SUPPORTS_64BIT_KERNEL
353 select SYS_SUPPORTS_BIG_ENDIAN
354 select SYS_SUPPORTS_LITTLE_ENDIAN
355 select SYS_SUPPORTS_SMARTMIPS
356 select SYS_SUPPORTS_MICROMIPS
357 select USB_ARCH_HAS_EHCI
358 select USB_EHCI_BIG_ENDIAN_DESC
359 select USB_EHCI_BIG_ENDIAN_MMIO
362 This enables support for the MIPS Technologies SEAD3 evaluation
366 bool "NEC EMMA2RH Mark-eins board"
370 This enables support for the NEC Electronics Mark-eins boards.
373 bool "NEC VR4100 series based machines"
376 select SYS_HAS_CPU_VR41XX
377 select ARCH_REQUIRE_GPIOLIB
380 bool "NXP STB220 board"
383 Support for NXP Semiconductors STB220 Development Board.
390 Support for NXP Semiconductors STB225 Development Board.
393 bool "PMC-Sierra MSP chipsets"
396 select DMA_NONCOHERENT
398 select NO_EXCEPT_FILL
400 select SYS_HAS_CPU_MIPS32_R1
401 select SYS_HAS_CPU_MIPS32_R2
402 select SYS_SUPPORTS_32BIT_KERNEL
403 select SYS_SUPPORTS_BIG_ENDIAN
406 select SERIAL_8250_CONSOLE
408 This adds support for the PMC-Sierra family of Multi-Service
409 Processor System-On-A-Chips. These parts include a number
410 of integrated peripherals, interfaces and DSPs in addition to
411 a variety of MIPS cores.
417 select CPU_MIPSR2_IRQ_VI
418 select CPU_MIPSR2_IRQ_EI
420 select DMA_NONCOHERENT
422 select SYS_HAS_EARLY_PRINTK
423 select SYS_HAS_CPU_MIPS32_R2
424 select SYS_SUPPORTS_32BIT_KERNEL
425 select SYS_SUPPORTS_BIG_ENDIAN
426 select SYS_SUPPORTS_HIGHMEM
427 select USB_OHCI_LITTLE_ENDIAN
429 This enables support for the Cisco PowerTV Platform.
432 bool "Ralink based machines"
436 select DMA_NONCOHERENT
439 select SYS_HAS_CPU_MIPS32_R1
440 select SYS_HAS_CPU_MIPS32_R2
441 select SYS_SUPPORTS_32BIT_KERNEL
442 select SYS_SUPPORTS_LITTLE_ENDIAN
443 select SYS_HAS_EARLY_PRINTK
444 select HAVE_MACH_CLKDEV
448 bool "SGI IP22 (Indy/Indigo2)"
454 select DEFAULT_SGI_PARTITION
455 select DMA_NONCOHERENT
459 select IP22_CPU_SCACHE
461 select GENERIC_ISA_DMA_SUPPORT_BROKEN
463 select SGI_HAS_INDYDOG
469 select SYS_HAS_CPU_R4X00
470 select SYS_HAS_CPU_R5000
472 # Disable EARLY_PRINTK for now since it leads to overwritten prom
473 # memory during early boot on some machines.
475 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
476 # for a more details discussion
478 # select SYS_HAS_EARLY_PRINTK
479 select SYS_SUPPORTS_32BIT_KERNEL
480 select SYS_SUPPORTS_64BIT_KERNEL
481 select SYS_SUPPORTS_BIG_ENDIAN
483 This are the SGI Indy, Challenge S and Indigo2, as well as certain
484 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
485 that runs on these, say Y here.
488 bool "SGI IP27 (Origin200/2000)"
492 select DEFAULT_SGI_PARTITION
494 select SYS_HAS_EARLY_PRINTK
496 select NR_CPUS_DEFAULT_64
497 select SYS_HAS_CPU_R10000
498 select SYS_SUPPORTS_64BIT_KERNEL
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_NUMA
501 select SYS_SUPPORTS_SMP
503 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
504 workstations. To compile a Linux kernel that runs on these, say Y
508 bool "SGI IP28 (Indigo2 R10k)"
514 select DEFAULT_SGI_PARTITION
515 select DMA_NONCOHERENT
516 select GENERIC_ISA_DMA_SUPPORT_BROKEN
522 select SGI_HAS_INDYDOG
528 select SYS_HAS_CPU_R10000
530 # Disable EARLY_PRINTK for now since it leads to overwritten prom
531 # memory during early boot on some machines.
533 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
534 # for a more details discussion
536 # select SYS_HAS_EARLY_PRINTK
537 select SYS_SUPPORTS_64BIT_KERNEL
538 select SYS_SUPPORTS_BIG_ENDIAN
540 This is the SGI Indigo2 with R10000 processor. To compile a Linux
541 kernel that runs on these, say Y here.
550 select DMA_NONCOHERENT
553 select R5000_CPU_SCACHE
554 select RM7000_CPU_SCACHE
555 select SYS_HAS_CPU_R5000
556 select SYS_HAS_CPU_R10000 if BROKEN
557 select SYS_HAS_CPU_RM7000
558 select SYS_HAS_CPU_NEVADA
559 select SYS_SUPPORTS_64BIT_KERNEL
560 select SYS_SUPPORTS_BIG_ENDIAN
562 If you want this kernel to run on SGI O2 workstation, say Y here.
565 bool "Sibyte BCM91120C-CRhine"
568 select SIBYTE_BCM1120
570 select SYS_HAS_CPU_SB1
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_LITTLE_ENDIAN
575 bool "Sibyte BCM91120x-Carmel"
578 select SIBYTE_BCM1120
580 select SYS_HAS_CPU_SB1
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_LITTLE_ENDIAN
585 bool "Sibyte BCM91125C-CRhone"
588 select SIBYTE_BCM1125
590 select SYS_HAS_CPU_SB1
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_HIGHMEM
593 select SYS_SUPPORTS_LITTLE_ENDIAN
596 bool "Sibyte BCM91125E-Rhone"
599 select SIBYTE_BCM1125H
601 select SYS_HAS_CPU_SB1
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_LITTLE_ENDIAN
606 bool "Sibyte BCM91250A-SWARM"
609 select HAVE_PATA_PLATFORM
610 select NR_CPUS_DEFAULT_2
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_HIGHMEM
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select ZONE_DMA32 if 64BIT
619 config SIBYTE_LITTLESUR
620 bool "Sibyte BCM91250C2-LittleSur"
623 select HAVE_PATA_PLATFORM
624 select NR_CPUS_DEFAULT_2
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_HIGHMEM
630 select SYS_SUPPORTS_LITTLE_ENDIAN
632 config SIBYTE_SENTOSA
633 bool "Sibyte BCM91250E-Sentosa"
636 select NR_CPUS_DEFAULT_2
639 select SYS_HAS_CPU_SB1
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select SYS_SUPPORTS_LITTLE_ENDIAN
644 bool "Sibyte BCM91480B-BigSur"
647 select NR_CPUS_DEFAULT_4
648 select SIBYTE_BCM1x80
650 select SYS_HAS_CPU_SB1
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select SYS_SUPPORTS_HIGHMEM
653 select SYS_SUPPORTS_LITTLE_ENDIAN
654 select ZONE_DMA32 if 64BIT
657 bool "SNI RM200/300/400"
658 select FW_ARC if CPU_LITTLE_ENDIAN
659 select FW_ARC32 if CPU_LITTLE_ENDIAN
660 select FW_SNIPROM if CPU_BIG_ENDIAN
661 select ARCH_MAY_HAVE_PC_FDC
665 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
666 select DMA_NONCOHERENT
667 select GENERIC_ISA_DMA
668 select HAVE_PCSPKR_PLATFORM
675 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
676 select SYS_HAS_CPU_R4X00
677 select SYS_HAS_CPU_R5000
678 select SYS_HAS_CPU_R10000
679 select R5000_CPU_SCACHE
680 select SYS_HAS_EARLY_PRINTK
681 select SYS_SUPPORTS_32BIT_KERNEL
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_HIGHMEM
685 select SYS_SUPPORTS_LITTLE_ENDIAN
687 The SNI RM200/300/400 are MIPS-based machines manufactured by
688 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
689 Technology and now in turn merged with Fujitsu. Say Y here to
690 support this machine type.
693 bool "Toshiba TX39 series based machines"
696 bool "Toshiba TX49 series based machines"
698 config MIKROTIK_RB532
699 bool "Mikrotik RB532 boards"
702 select DMA_NONCOHERENT
705 select SYS_HAS_CPU_MIPS32_R1
706 select SYS_SUPPORTS_32BIT_KERNEL
707 select SYS_SUPPORTS_LITTLE_ENDIAN
710 select ARCH_REQUIRE_GPIOLIB
712 Support the Mikrotik(tm) RouterBoard 532 series,
713 based on the IDT RC32434 SoC.
716 bool "Wind River PPMC board"
721 select DMA_NONCOHERENT
723 select PCI_GT64XXX_PCI0
725 select SYS_HAS_CPU_MIPS32_R1
726 select SYS_HAS_CPU_MIPS32_R2
727 select SYS_HAS_CPU_MIPS64_R1
728 select SYS_HAS_CPU_NEVADA
729 select SYS_HAS_CPU_RM7000
730 select SYS_SUPPORTS_32BIT_KERNEL
731 select SYS_SUPPORTS_64BIT_KERNEL
732 select SYS_SUPPORTS_BIG_ENDIAN
733 select SYS_SUPPORTS_LITTLE_ENDIAN
735 This enables support for the Wind River MIPS32 4KC PPMC evaluation
736 board, which is based on GT64120 bridge chip.
738 config CAVIUM_OCTEON_SIMULATOR
739 bool "Cavium Networks Octeon Simulator"
741 select 64BIT_PHYS_ADDR
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select SYS_SUPPORTS_HOTPLUG_CPU
746 select SYS_HAS_CPU_CAVIUM_OCTEON
749 The Octeon simulator is software performance model of the Cavium
750 Octeon Processor. It supports simulating Octeon processors on x86
753 config CAVIUM_OCTEON_REFERENCE_BOARD
754 bool "Cavium Networks Octeon reference board"
756 select 64BIT_PHYS_ADDR
758 select SYS_SUPPORTS_64BIT_KERNEL
759 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_HOTPLUG_CPU
762 select SYS_HAS_EARLY_PRINTK
763 select SYS_HAS_CPU_CAVIUM_OCTEON
766 select ARCH_SUPPORTS_MSI
768 select USB_ARCH_HAS_OHCI
769 select USB_ARCH_HAS_EHCI
772 This option supports all of the Octeon reference boards from Cavium
773 Networks. It builds a kernel that dynamically determines the Octeon
774 CPU type and supports all known board reference implementations.
775 Some of the supported boards are:
782 Say Y here for most Octeon reference boards.
785 bool "Netlogic XLR/XLS based systems"
788 select SYS_HAS_CPU_XLR
789 select SYS_SUPPORTS_SMP
792 select SYS_SUPPORTS_32BIT_KERNEL
793 select SYS_SUPPORTS_64BIT_KERNEL
794 select 64BIT_PHYS_ADDR
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_HIGHMEM
798 select NR_CPUS_DEFAULT_32
802 select ARCH_SUPPORTS_MSI
803 select ZONE_DMA32 if 64BIT
805 select SYS_HAS_EARLY_PRINTK
806 select USB_ARCH_HAS_OHCI if USB_SUPPORT
807 select USB_ARCH_HAS_EHCI if USB_SUPPORT
809 Support for systems based on Netlogic XLR and XLS processors.
810 Say Y here if you have a XLR or XLS based board.
813 bool "Netlogic XLP based systems"
816 select SYS_HAS_CPU_XLP
817 select SYS_SUPPORTS_SMP
819 select SYS_SUPPORTS_32BIT_KERNEL
820 select SYS_SUPPORTS_64BIT_KERNEL
821 select 64BIT_PHYS_ADDR
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_LITTLE_ENDIAN
824 select SYS_SUPPORTS_HIGHMEM
826 select NR_CPUS_DEFAULT_32
830 select ZONE_DMA32 if 64BIT
832 select SYS_HAS_EARLY_PRINTK
835 This board is based on Netlogic XLP Processor.
836 Say Y here if you have a XLP based board.
840 source "arch/mips/alchemy/Kconfig"
841 source "arch/mips/ath79/Kconfig"
842 source "arch/mips/bcm47xx/Kconfig"
843 source "arch/mips/bcm63xx/Kconfig"
844 source "arch/mips/jazz/Kconfig"
845 source "arch/mips/jz4740/Kconfig"
846 source "arch/mips/lantiq/Kconfig"
847 source "arch/mips/lasat/Kconfig"
848 source "arch/mips/pmcs-msp71xx/Kconfig"
849 source "arch/mips/powertv/Kconfig"
850 source "arch/mips/ralink/Kconfig"
851 source "arch/mips/sgi-ip27/Kconfig"
852 source "arch/mips/sibyte/Kconfig"
853 source "arch/mips/txx9/Kconfig"
854 source "arch/mips/vr41xx/Kconfig"
855 source "arch/mips/cavium-octeon/Kconfig"
856 source "arch/mips/loongson/Kconfig"
857 source "arch/mips/loongson1/Kconfig"
858 source "arch/mips/netlogic/Kconfig"
862 config RWSEM_GENERIC_SPINLOCK
866 config RWSEM_XCHGADD_ALGORITHM
869 config ARCH_HAS_ILOG2_U32
873 config ARCH_HAS_ILOG2_U64
877 config GENERIC_HWEIGHT
881 config GENERIC_CALIBRATE_DELAY
885 config SCHED_OMIT_FRAME_POINTER
890 # Select some configuration options automatically based on user selections.
895 config ARCH_MAY_HAVE_PC_FDC
942 select ARCH_REQUIRE_GPIOLIB
948 config ARCH_DMA_ADDR_T_64BIT
949 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
954 config DMA_NONCOHERENT
956 select NEED_DMA_MAP_STATE
958 config NEED_DMA_MAP_STATE
961 config SYS_HAS_EARLY_PRINTK
965 bool "Support for hot-pluggable CPUs"
966 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
968 Say Y here to allow turning CPUs off and on. CPUs can be
969 controlled through /sys/devices/system/cpu.
970 (Note: power management support will enable this option
971 automatically on SMP systems. )
972 Say N if you want to disable CPU hotplug.
974 config SYS_SUPPORTS_HOTPLUG_CPU
998 config GENERIC_ISA_DMA
1000 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1003 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1005 select GENERIC_ISA_DMA
1013 config HOLES_IN_ZONE
1017 # Endianness selection. Sufficiently obscure so many users don't know what to
1018 # answer,so we try hard to limit the available choices. Also the use of a
1019 # choice statement should be more obvious to the user.
1022 prompt "Endianness selection"
1024 Some MIPS machines can be configured for either little or big endian
1025 byte order. These modes require different kernels and a different
1026 Linux distribution. In general there is one preferred byteorder for a
1027 particular system but some systems are just as commonly used in the
1028 one or the other endianness.
1030 config CPU_BIG_ENDIAN
1032 depends on SYS_SUPPORTS_BIG_ENDIAN
1034 config CPU_LITTLE_ENDIAN
1035 bool "Little endian"
1036 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1044 config SYS_SUPPORTS_APM_EMULATION
1047 config SYS_SUPPORTS_BIG_ENDIAN
1050 config SYS_SUPPORTS_LITTLE_ENDIAN
1053 config SYS_SUPPORTS_HUGETLBFS
1055 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1058 config MIPS_HUGE_TLB_SUPPORT
1059 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1082 config PCI_GT64XXX_PCI0
1085 config NO_EXCEPT_FILL
1092 select DMA_NONCOHERENT
1094 select SWAP_IO_SPACE
1095 select SYS_HAS_CPU_R5500
1096 select SYS_SUPPORTS_32BIT_KERNEL
1097 select SYS_SUPPORTS_64BIT_KERNEL
1098 select SYS_SUPPORTS_BIG_ENDIAN
1105 select DMA_NONCOHERENT
1106 select SYS_HAS_CPU_MIPS32_R2
1107 select SYS_SUPPORTS_32BIT_KERNEL
1108 select SYS_SUPPORTS_LITTLE_ENDIAN
1109 select SYS_SUPPORTS_BIG_ENDIAN
1111 select CPU_MIPSR2_IRQ_VI
1117 config SWAP_IO_SPACE
1120 config SGI_HAS_INDYDOG
1132 config SGI_HAS_ZILOG
1135 config SGI_HAS_I8042
1138 config DEFAULT_SGI_PARTITION
1150 config MIPS_L1_CACHE_SHIFT
1152 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1153 default "6" if MIPS_CPU_SCACHE
1154 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1157 config HAVE_STD_PC_SERIAL_PORT
1161 bool "ARC console support"
1162 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1166 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1171 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1180 menu "CPU selection"
1186 config CPU_LOONGSON2E
1188 depends on SYS_HAS_CPU_LOONGSON2E
1189 select CPU_LOONGSON2
1191 The Loongson 2E processor implements the MIPS III instruction set
1192 with many extensions.
1194 It has an internal FPGA northbridge, which is compatible to
1197 config CPU_LOONGSON2F
1199 depends on SYS_HAS_CPU_LOONGSON2F
1200 select CPU_LOONGSON2
1202 select ARCH_REQUIRE_GPIOLIB
1204 The Loongson 2F processor implements the MIPS III instruction set
1205 with many extensions.
1207 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1208 have a similar programming interface with FPGA northbridge used in
1211 config CPU_LOONGSON1B
1213 depends on SYS_HAS_CPU_LOONGSON1B
1214 select CPU_LOONGSON1
1216 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1217 release 2 instruction set.
1219 config CPU_MIPS32_R1
1220 bool "MIPS32 Release 1"
1221 depends on SYS_HAS_CPU_MIPS32_R1
1222 select CPU_HAS_PREFETCH
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_HIGHMEM
1226 Choose this option to build a kernel for release 1 or later of the
1227 MIPS32 architecture. Most modern embedded systems with a 32-bit
1228 MIPS processor are based on a MIPS32 processor. If you know the
1229 specific type of processor in your system, choose those that one
1230 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1231 Release 2 of the MIPS32 architecture is available since several
1232 years so chances are you even have a MIPS32 Release 2 processor
1233 in which case you should choose CPU_MIPS32_R2 instead for better
1236 config CPU_MIPS32_R2
1237 bool "MIPS32 Release 2"
1238 depends on SYS_HAS_CPU_MIPS32_R2
1239 select CPU_HAS_PREFETCH
1240 select CPU_SUPPORTS_32BIT_KERNEL
1241 select CPU_SUPPORTS_HIGHMEM
1244 Choose this option to build a kernel for release 2 or later of the
1245 MIPS32 architecture. Most modern embedded systems with a 32-bit
1246 MIPS processor are based on a MIPS32 processor. If you know the
1247 specific type of processor in your system, choose those that one
1248 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1250 config CPU_MIPS64_R1
1251 bool "MIPS64 Release 1"
1252 depends on SYS_HAS_CPU_MIPS64_R1
1253 select CPU_HAS_PREFETCH
1254 select CPU_SUPPORTS_32BIT_KERNEL
1255 select CPU_SUPPORTS_64BIT_KERNEL
1256 select CPU_SUPPORTS_HIGHMEM
1257 select CPU_SUPPORTS_HUGEPAGES
1259 Choose this option to build a kernel for release 1 or later of the
1260 MIPS64 architecture. Many modern embedded systems with a 64-bit
1261 MIPS processor are based on a MIPS64 processor. If you know the
1262 specific type of processor in your system, choose those that one
1263 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1264 Release 2 of the MIPS64 architecture is available since several
1265 years so chances are you even have a MIPS64 Release 2 processor
1266 in which case you should choose CPU_MIPS64_R2 instead for better
1269 config CPU_MIPS64_R2
1270 bool "MIPS64 Release 2"
1271 depends on SYS_HAS_CPU_MIPS64_R2
1272 select CPU_HAS_PREFETCH
1273 select CPU_SUPPORTS_32BIT_KERNEL
1274 select CPU_SUPPORTS_64BIT_KERNEL
1275 select CPU_SUPPORTS_HIGHMEM
1276 select CPU_SUPPORTS_HUGEPAGES
1278 Choose this option to build a kernel for release 2 or later of the
1279 MIPS64 architecture. Many modern embedded systems with a 64-bit
1280 MIPS processor are based on a MIPS64 processor. If you know the
1281 specific type of processor in your system, choose those that one
1282 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1286 depends on SYS_HAS_CPU_R3000
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1291 Please make sure to pick the right CPU type. Linux/MIPS is not
1292 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1293 *not* work on R4000 machines and vice versa. However, since most
1294 of the supported machines have an R4000 (or similar) CPU, R4x00
1295 might be a safe bet. If the resulting kernel does not work,
1296 try to recompile with R3000.
1300 depends on SYS_HAS_CPU_TX39XX
1301 select CPU_SUPPORTS_32BIT_KERNEL
1305 depends on SYS_HAS_CPU_VR41XX
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1309 The options selects support for the NEC VR4100 series of processors.
1310 Only choose this option if you have one of these processors as a
1311 kernel built with this option will not run on any other type of
1312 processor or vice versa.
1316 depends on SYS_HAS_CPU_R4300
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1320 MIPS Technologies R4300-series processors.
1324 depends on SYS_HAS_CPU_R4X00
1325 select CPU_SUPPORTS_32BIT_KERNEL
1326 select CPU_SUPPORTS_64BIT_KERNEL
1327 select CPU_SUPPORTS_HUGEPAGES
1329 MIPS Technologies R4000-series processors other than 4300, including
1330 the R4000, R4400, R4600, and 4700.
1334 depends on SYS_HAS_CPU_TX49XX
1335 select CPU_HAS_PREFETCH
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1338 select CPU_SUPPORTS_HUGEPAGES
1342 depends on SYS_HAS_CPU_R5000
1343 select CPU_SUPPORTS_32BIT_KERNEL
1344 select CPU_SUPPORTS_64BIT_KERNEL
1345 select CPU_SUPPORTS_HUGEPAGES
1347 MIPS Technologies R5000-series processors other than the Nevada.
1351 depends on SYS_HAS_CPU_R5432
1352 select CPU_SUPPORTS_32BIT_KERNEL
1353 select CPU_SUPPORTS_64BIT_KERNEL
1354 select CPU_SUPPORTS_HUGEPAGES
1358 depends on SYS_HAS_CPU_R5500
1359 select CPU_SUPPORTS_32BIT_KERNEL
1360 select CPU_SUPPORTS_64BIT_KERNEL
1361 select CPU_SUPPORTS_HUGEPAGES
1363 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1368 depends on SYS_HAS_CPU_R6000
1369 select CPU_SUPPORTS_32BIT_KERNEL
1371 MIPS Technologies R6000 and R6000A series processors. Note these
1372 processors are extremely rare and the support for them is incomplete.
1376 depends on SYS_HAS_CPU_NEVADA
1377 select CPU_SUPPORTS_32BIT_KERNEL
1378 select CPU_SUPPORTS_64BIT_KERNEL
1379 select CPU_SUPPORTS_HUGEPAGES
1381 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1385 depends on SYS_HAS_CPU_R8000
1386 select CPU_HAS_PREFETCH
1387 select CPU_SUPPORTS_64BIT_KERNEL
1389 MIPS Technologies R8000 processors. Note these processors are
1390 uncommon and the support for them is incomplete.
1394 depends on SYS_HAS_CPU_R10000
1395 select CPU_HAS_PREFETCH
1396 select CPU_SUPPORTS_32BIT_KERNEL
1397 select CPU_SUPPORTS_64BIT_KERNEL
1398 select CPU_SUPPORTS_HIGHMEM
1399 select CPU_SUPPORTS_HUGEPAGES
1401 MIPS Technologies R10000-series processors.
1405 depends on SYS_HAS_CPU_RM7000
1406 select CPU_HAS_PREFETCH
1407 select CPU_SUPPORTS_32BIT_KERNEL
1408 select CPU_SUPPORTS_64BIT_KERNEL
1409 select CPU_SUPPORTS_HIGHMEM
1410 select CPU_SUPPORTS_HUGEPAGES
1414 depends on SYS_HAS_CPU_SB1
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select CPU_SUPPORTS_64BIT_KERNEL
1417 select CPU_SUPPORTS_HIGHMEM
1418 select CPU_SUPPORTS_HUGEPAGES
1419 select WEAK_ORDERING
1421 config CPU_CAVIUM_OCTEON
1422 bool "Cavium Octeon processor"
1423 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1424 select ARCH_SPARSEMEM_ENABLE
1425 select CPU_HAS_PREFETCH
1426 select CPU_SUPPORTS_64BIT_KERNEL
1427 select SYS_SUPPORTS_SMP
1428 select NR_CPUS_DEFAULT_16
1429 select WEAK_ORDERING
1430 select CPU_SUPPORTS_HIGHMEM
1431 select CPU_SUPPORTS_HUGEPAGES
1435 The Cavium Octeon processor is a highly integrated chip containing
1436 many ethernet hardware widgets for networking tasks. The processor
1437 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1438 Full details can be found at http://www.caviumnetworks.com.
1440 config CPU_BMIPS3300
1442 depends on SYS_HAS_CPU_BMIPS3300
1445 Broadcom BMIPS3300 processors.
1447 config CPU_BMIPS4350
1449 depends on SYS_HAS_CPU_BMIPS4350
1451 select SYS_SUPPORTS_SMP
1452 select SYS_SUPPORTS_HOTPLUG_CPU
1454 Broadcom BMIPS4350 ("VIPER") processors.
1456 config CPU_BMIPS4380
1458 depends on SYS_HAS_CPU_BMIPS4380
1460 select SYS_SUPPORTS_SMP
1461 select SYS_SUPPORTS_HOTPLUG_CPU
1463 Broadcom BMIPS4380 processors.
1465 config CPU_BMIPS5000
1467 depends on SYS_HAS_CPU_BMIPS5000
1469 select CPU_SUPPORTS_HIGHMEM
1470 select MIPS_CPU_SCACHE
1471 select SYS_SUPPORTS_SMP
1472 select SYS_SUPPORTS_HOTPLUG_CPU
1474 Broadcom BMIPS5000 processors.
1477 bool "Netlogic XLR SoC"
1478 depends on SYS_HAS_CPU_XLR
1479 select CPU_SUPPORTS_32BIT_KERNEL
1480 select CPU_SUPPORTS_64BIT_KERNEL
1481 select CPU_SUPPORTS_HIGHMEM
1482 select CPU_SUPPORTS_HUGEPAGES
1483 select WEAK_ORDERING
1484 select WEAK_REORDERING_BEYOND_LLSC
1486 Netlogic Microsystems XLR/XLS processors.
1489 bool "Netlogic XLP SoC"
1490 depends on SYS_HAS_CPU_XLP
1491 select CPU_SUPPORTS_32BIT_KERNEL
1492 select CPU_SUPPORTS_64BIT_KERNEL
1493 select CPU_SUPPORTS_HIGHMEM
1494 select WEAK_ORDERING
1495 select WEAK_REORDERING_BEYOND_LLSC
1496 select CPU_HAS_PREFETCH
1499 Netlogic Microsystems XLP processors.
1503 config CPU_NOP_WORKAROUNDS
1506 config CPU_JUMP_WORKAROUNDS
1509 config CPU_LOONGSON2F_WORKAROUNDS
1510 bool "Loongson 2F Workarounds"
1512 select CPU_NOP_WORKAROUNDS
1513 select CPU_JUMP_WORKAROUNDS
1515 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1516 require workarounds. Without workarounds the system may hang
1517 unexpectedly. For more information please refer to the gas
1518 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1520 Loongson 2F03 and later have fixed these issues and no workarounds
1521 are needed. The workarounds have no significant side effect on them
1522 but may decrease the performance of the system so this option should
1523 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1526 If unsure, please say Y.
1527 endif # CPU_LOONGSON2F
1529 config SYS_SUPPORTS_ZBOOT
1531 select HAVE_KERNEL_GZIP
1532 select HAVE_KERNEL_BZIP2
1533 select HAVE_KERNEL_LZMA
1534 select HAVE_KERNEL_LZO
1536 config SYS_SUPPORTS_ZBOOT_UART16550
1538 select SYS_SUPPORTS_ZBOOT
1540 config CPU_LOONGSON2
1542 select CPU_SUPPORTS_32BIT_KERNEL
1543 select CPU_SUPPORTS_64BIT_KERNEL
1544 select CPU_SUPPORTS_HIGHMEM
1545 select CPU_SUPPORTS_HUGEPAGES
1547 config CPU_LOONGSON1
1551 select CPU_HAS_PREFETCH
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_HIGHMEM
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select DMA_NONCOHERENT
1561 select SWAP_IO_SPACE
1562 select WEAK_ORDERING
1564 config SYS_HAS_CPU_LOONGSON2E
1567 config SYS_HAS_CPU_LOONGSON2F
1569 select CPU_SUPPORTS_CPUFREQ
1570 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1571 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1573 config SYS_HAS_CPU_LOONGSON1B
1576 config SYS_HAS_CPU_MIPS32_R1
1579 config SYS_HAS_CPU_MIPS32_R2
1582 config SYS_HAS_CPU_MIPS64_R1
1585 config SYS_HAS_CPU_MIPS64_R2
1588 config SYS_HAS_CPU_R3000
1591 config SYS_HAS_CPU_TX39XX
1594 config SYS_HAS_CPU_VR41XX
1597 config SYS_HAS_CPU_R4300
1600 config SYS_HAS_CPU_R4X00
1603 config SYS_HAS_CPU_TX49XX
1606 config SYS_HAS_CPU_R5000
1609 config SYS_HAS_CPU_R5432
1612 config SYS_HAS_CPU_R5500
1615 config SYS_HAS_CPU_R6000
1618 config SYS_HAS_CPU_NEVADA
1621 config SYS_HAS_CPU_R8000
1624 config SYS_HAS_CPU_R10000
1627 config SYS_HAS_CPU_RM7000
1630 config SYS_HAS_CPU_SB1
1633 config SYS_HAS_CPU_CAVIUM_OCTEON
1636 config SYS_HAS_CPU_BMIPS3300
1639 config SYS_HAS_CPU_BMIPS4350
1642 config SYS_HAS_CPU_BMIPS4380
1645 config SYS_HAS_CPU_BMIPS5000
1648 config SYS_HAS_CPU_XLR
1651 config SYS_HAS_CPU_XLP
1655 # CPU may reorder R->R, R->W, W->R, W->W
1656 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1658 config WEAK_ORDERING
1662 # CPU may reorder reads and writes beyond LL/SC
1663 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1665 config WEAK_REORDERING_BEYOND_LLSC
1670 # These two indicate any level of the MIPS32 and MIPS64 architecture
1674 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1678 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1681 # These two indicate the revision of the architecture, either Release 1 or Release 2
1685 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1689 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1691 config SYS_SUPPORTS_32BIT_KERNEL
1693 config SYS_SUPPORTS_64BIT_KERNEL
1695 config CPU_SUPPORTS_32BIT_KERNEL
1697 config CPU_SUPPORTS_64BIT_KERNEL
1699 config CPU_SUPPORTS_CPUFREQ
1701 config CPU_SUPPORTS_ADDRWINCFG
1703 config CPU_SUPPORTS_HUGEPAGES
1705 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1707 config MIPS_PGD_C0_CONTEXT
1709 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1712 # Set to y for ptrace access to watch registers.
1714 config HARDWARE_WATCHPOINTS
1716 default y if CPU_MIPSR1 || CPU_MIPSR2
1721 prompt "Kernel code model"
1723 You should only select this option if you have a workload that
1724 actually benefits from 64-bit processing or if your machine has
1725 large memory. You will only be presented a single option in this
1726 menu if your system does not support both 32-bit and 64-bit kernels.
1729 bool "32-bit kernel"
1730 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1733 Select this option if you want to build a 32-bit kernel.
1735 bool "64-bit kernel"
1736 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1737 select HAVE_SYSCALL_WRAPPERS
1739 Select this option if you want to build a 64-bit kernel.
1744 bool "KVM Guest Kernel"
1746 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1748 config KVM_HOST_FREQ
1749 int "KVM Host Processor Frequency (MHz)"
1750 depends on KVM_GUEST
1753 Select this option if building a guest kernel for KVM to skip
1754 RTC emulation when determining guest CPU Frequency. Instead, the guest
1755 processor frequency is automatically derived from the host frequency.
1758 prompt "Kernel page size"
1759 default PAGE_SIZE_4KB
1761 config PAGE_SIZE_4KB
1763 depends on !CPU_LOONGSON2
1765 This option select the standard 4kB Linux page size. On some
1766 R3000-family processors this is the only available page size. Using
1767 4kB page size will minimize memory consumption and is therefore
1768 recommended for low memory systems.
1770 config PAGE_SIZE_8KB
1772 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1774 Using 8kB page size will result in higher performance kernel at
1775 the price of higher memory consumption. This option is available
1776 only on R8000 and cnMIPS processors. Note that you will need a
1777 suitable Linux distribution to support this.
1779 config PAGE_SIZE_16KB
1781 depends on !CPU_R3000 && !CPU_TX39XX
1783 Using 16kB page size will result in higher performance kernel at
1784 the price of higher memory consumption. This option is available on
1785 all non-R3000 family processors. Note that you will need a suitable
1786 Linux distribution to support this.
1788 config PAGE_SIZE_32KB
1790 depends on CPU_CAVIUM_OCTEON
1792 Using 32kB page size will result in higher performance kernel at
1793 the price of higher memory consumption. This option is available
1794 only on cnMIPS cores. Note that you will need a suitable Linux
1795 distribution to support this.
1797 config PAGE_SIZE_64KB
1799 depends on !CPU_R3000 && !CPU_TX39XX
1801 Using 64kB page size will result in higher performance kernel at
1802 the price of higher memory consumption. This option is available on
1803 all non-R3000 family processor. Not that at the time of this
1804 writing this option is still high experimental.
1808 config FORCE_MAX_ZONEORDER
1809 int "Maximum zone order"
1810 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1811 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1812 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1813 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1814 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1815 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1819 The kernel memory allocator divides physically contiguous memory
1820 blocks into "zones", where each zone is a power of two number of
1821 pages. This option selects the largest power of two that the kernel
1822 keeps in the memory allocator. If you need to allocate very large
1823 blocks of physically contiguous memory, then you may need to
1824 increase this value.
1826 This config option is actually maximum order plus one. For example,
1827 a value of 11 means that the largest free memory block is 2^10 pages.
1829 The page size is not necessarily 4KB. Keep this in mind
1830 when choosing a value for this option.
1833 bool "Use GIC global counter for clock events"
1834 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1836 Use the GIC global counter for the clock events. The R4K clock
1837 event driver is always present, so if the platform ends up not
1838 detecting a GIC, it will fall back to the R4K timer for the
1839 generation of clock events.
1844 config IP22_CPU_SCACHE
1849 # Support for a MIPS32 / MIPS64 style S-caches
1851 config MIPS_CPU_SCACHE
1855 config R5000_CPU_SCACHE
1859 config RM7000_CPU_SCACHE
1863 config SIBYTE_DMA_PAGEOPS
1864 bool "Use DMA to clear/copy pages"
1867 Instead of using the CPU to zero and copy pages, use a Data Mover
1868 channel. These DMA channels are otherwise unused by the standard
1869 SiByte Linux port. Seems to give a small performance benefit.
1871 config CPU_HAS_PREFETCH
1874 config CPU_GENERIC_DUMP_TLB
1876 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1880 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1882 config CPU_R4K_CACHE_TLB
1884 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1887 prompt "MIPS MT options"
1889 config MIPS_MT_DISABLED
1890 bool "Disable multithreading support."
1892 Use this option if your workload can't take advantage of
1893 MIPS hardware multithreading support. On systems that don't have
1894 the option of an MT-enabled processor this option will be the only
1895 option in this menu.
1898 bool "Use 1 TC on each available VPE for SMP"
1899 depends on SYS_SUPPORTS_MULTITHREADING
1900 select CPU_MIPSR2_IRQ_VI
1901 select CPU_MIPSR2_IRQ_EI
1903 select NR_CPUS_DEFAULT_2
1905 select SYS_SUPPORTS_SCHED_SMT if SMP
1906 select SYS_SUPPORTS_SMP
1908 select MIPS_PERF_SHARED_TC_COUNTERS
1910 This is a kernel model which is known a VSMP but lately has been
1911 marketesed into SMVP.
1912 Virtual SMP uses the processor's VPEs to implement virtual
1913 processors. In currently available configuration of the 34K processor
1914 this allows for a dual processor. Both processors will share the same
1915 primary caches; each will obtain the half of the TLB for it's own
1916 exclusive use. For a layman this model can be described as similar to
1917 what Intel calls Hyperthreading.
1919 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1922 bool "SMTC: Use all TCs on all VPEs for SMP"
1923 depends on CPU_MIPS32_R2
1924 #depends on CPU_MIPS64_R2 # once there is hardware ...
1925 depends on SYS_SUPPORTS_MULTITHREADING
1926 select CPU_MIPSR2_IRQ_VI
1927 select CPU_MIPSR2_IRQ_EI
1929 select NR_CPUS_DEFAULT_8
1931 select SYS_SUPPORTS_SMP
1934 This is a kernel model which is known a SMTC or lately has been
1935 marketesed into SMVP.
1936 is presenting the available TC's of the core as processors to Linux.
1937 On currently available 34K processors this means a Linux system will
1938 see up to 5 processors. The implementation of the SMTC kernel differs
1939 significantly from VSMP and cannot efficiently coexist in the same
1940 kernel binary so the choice between VSMP and SMTC is a compile time
1943 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1951 bool "SMT (multithreading) scheduler support"
1952 depends on SYS_SUPPORTS_SCHED_SMT
1955 SMT scheduler support improves the CPU scheduler's decision making
1956 when dealing with MIPS MT enabled cores at a cost of slightly
1957 increased overhead in some places. If unsure say N here.
1959 config SYS_SUPPORTS_SCHED_SMT
1962 config SYS_SUPPORTS_MULTITHREADING
1965 config MIPS_MT_FPAFF
1966 bool "Dynamic FPU affinity for FP-intensive threads"
1968 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1970 config MIPS_VPE_LOADER
1971 bool "VPE loader support."
1972 depends on SYS_SUPPORTS_MULTITHREADING
1973 select CPU_MIPSR2_IRQ_VI
1974 select CPU_MIPSR2_IRQ_EI
1977 Includes a loader for loading an elf relocatable object
1978 onto another VPE and running it.
1980 config MIPS_MT_SMTC_IM_BACKSTOP
1981 bool "Use per-TC register bits as backstop for inhibited IM bits"
1982 depends on MIPS_MT_SMTC
1985 To support multiple TC microthreads acting as "CPUs" within
1986 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1987 during interrupt handling. To support legacy drivers and interrupt
1988 controller management code, SMTC has a "backstop" to track and
1989 if necessary restore the interrupt mask. This has some performance
1990 impact on interrupt service overhead.
1992 config MIPS_MT_SMTC_IRQAFF
1993 bool "Support IRQ affinity API"
1994 depends on MIPS_MT_SMTC
1997 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1998 for SMTC Linux kernel. Requires platform support, of which
1999 an example can be found in the MIPS kernel i8259 and Malta
2000 platform code. Adds some overhead to interrupt dispatch, and
2001 should be used only if you know what you are doing.
2003 config MIPS_VPE_LOADER_TOM
2004 bool "Load VPE program into memory hidden from linux"
2005 depends on MIPS_VPE_LOADER
2008 The loader can use memory that is present but has been hidden from
2009 Linux using the kernel command line option "mem=xxMB". It's up to
2010 you to ensure the amount you put in the option and the space your
2011 program requires is less or equal to the amount physically present.
2013 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2014 config MIPS_VPE_APSP_API
2015 bool "Enable support for AP/SP API (RTLX)"
2016 depends on MIPS_VPE_LOADER
2020 bool "MIPS CMP framework support"
2021 depends on SYS_SUPPORTS_MIPS_CMP
2023 select SYS_SUPPORTS_SMP
2024 select SYS_SUPPORTS_SCHED_SMT if SMP
2025 select WEAK_ORDERING
2028 This is a placeholder option for the GCMP work. It will need to
2029 be handled differently...
2031 config SB1_PASS_1_WORKAROUNDS
2033 depends on CPU_SB1_PASS_1
2036 config SB1_PASS_2_WORKAROUNDS
2038 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2041 config SB1_PASS_2_1_WORKAROUNDS
2043 depends on CPU_SB1 && CPU_SB1_PASS_2
2047 config 64BIT_PHYS_ADDR
2050 config ARCH_PHYS_ADDR_T_64BIT
2051 def_bool 64BIT_PHYS_ADDR
2053 config CPU_HAS_SMARTMIPS
2054 depends on SYS_SUPPORTS_SMARTMIPS
2055 bool "Support for the SmartMIPS ASE"
2057 SmartMIPS is a extension of the MIPS32 architecture aimed at
2058 increased security at both hardware and software level for
2059 smartcards. Enabling this option will allow proper use of the
2060 SmartMIPS instructions by Linux applications. However a kernel with
2061 this option will not work on a MIPS core without SmartMIPS core. If
2062 you don't know you probably don't have SmartMIPS and should say N
2065 config CPU_MICROMIPS
2066 depends on SYS_SUPPORTS_MICROMIPS
2067 bool "Build kernel using microMIPS ISA"
2069 When this option is enabled the kernel will be built using the
2079 # Vectored interrupt mode is an R2 feature
2081 config CPU_MIPSR2_IRQ_VI
2085 # Extended interrupt mode is an R2 feature
2087 config CPU_MIPSR2_IRQ_EI
2092 depends on !CPU_R3000
2098 config CPU_DADDI_WORKAROUNDS
2101 config CPU_R4000_WORKAROUNDS
2103 select CPU_R4400_WORKAROUNDS
2105 config CPU_R4400_WORKAROUNDS
2109 # - Highmem only makes sense for the 32-bit kernel.
2110 # - The current highmem code will only work properly on physically indexed
2111 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2112 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2113 # moment we protect the user and offer the highmem option only on machines
2114 # where it's known to be safe. This will not offer highmem on a few systems
2115 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2116 # indexed CPUs but we're playing safe.
2117 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2118 # know they might have memory configurations that could make use of highmem
2122 bool "High Memory Support"
2123 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2125 config CPU_SUPPORTS_HIGHMEM
2128 config SYS_SUPPORTS_HIGHMEM
2131 config SYS_SUPPORTS_SMARTMIPS
2134 config SYS_SUPPORTS_MICROMIPS
2137 config ARCH_FLATMEM_ENABLE
2139 depends on !NUMA && !CPU_LOONGSON2
2141 config ARCH_DISCONTIGMEM_ENABLE
2143 default y if SGI_IP27
2145 Say Y to support efficient handling of discontiguous physical memory,
2146 for architectures which are either NUMA (Non-Uniform Memory Access)
2147 or have huge holes in the physical address space for other reasons.
2148 See <file:Documentation/vm/numa> for more.
2150 config ARCH_SPARSEMEM_ENABLE
2152 select SPARSEMEM_STATIC
2156 depends on SYS_SUPPORTS_NUMA
2158 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2159 Access). This option improves performance on systems with more
2160 than two nodes; on two node systems it is generally better to
2161 leave it disabled; on single node systems disable this option
2164 config SYS_SUPPORTS_NUMA
2170 depends on NEED_MULTIPLE_NODES
2172 config HW_PERF_EVENTS
2173 bool "Enable hardware performance counter support for perf events"
2174 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2177 Enable hardware performance counter support for perf events. If
2178 disabled, perf events will use software events only.
2183 bool "Multi-Processing support"
2184 depends on SYS_SUPPORTS_SMP
2185 select USE_GENERIC_SMP_HELPERS
2187 This enables support for systems with more than one CPU. If you have
2188 a system with only one CPU, like most personal computers, say N. If
2189 you have a system with more than one CPU, say Y.
2191 If you say N here, the kernel will run on single and multiprocessor
2192 machines, but will use only one CPU of a multiprocessor machine. If
2193 you say Y here, the kernel will run on many, but not all,
2194 singleprocessor machines. On a singleprocessor machine, the kernel
2195 will run faster if you say N here.
2197 People using multiprocessor machines who say Y here should also say
2198 Y to "Enhanced Real Time Clock Support", below.
2200 See also the SMP-HOWTO available at
2201 <http://www.tldp.org/docs.html#howto>.
2203 If you don't know what to do here, say N.
2208 config SYS_SUPPORTS_MIPS_CMP
2211 config SYS_SUPPORTS_SMP
2214 config NR_CPUS_DEFAULT_1
2217 config NR_CPUS_DEFAULT_2
2220 config NR_CPUS_DEFAULT_4
2223 config NR_CPUS_DEFAULT_8
2226 config NR_CPUS_DEFAULT_16
2229 config NR_CPUS_DEFAULT_32
2232 config NR_CPUS_DEFAULT_64
2236 int "Maximum number of CPUs (2-64)"
2237 range 1 64 if NR_CPUS_DEFAULT_1
2239 default "1" if NR_CPUS_DEFAULT_1
2240 default "2" if NR_CPUS_DEFAULT_2
2241 default "4" if NR_CPUS_DEFAULT_4
2242 default "8" if NR_CPUS_DEFAULT_8
2243 default "16" if NR_CPUS_DEFAULT_16
2244 default "32" if NR_CPUS_DEFAULT_32
2245 default "64" if NR_CPUS_DEFAULT_64
2247 This allows you to specify the maximum number of CPUs which this
2248 kernel will support. The maximum supported value is 32 for 32-bit
2249 kernel and 64 for 64-bit kernels; the minimum value which makes
2250 sense is 1 for Qemu (useful only for kernel debugging purposes)
2251 and 2 for all others.
2253 This is purely to save memory - each supported CPU adds
2254 approximately eight kilobytes to the kernel image. For best
2255 performance should round up your number of processors to the next
2258 config MIPS_PERF_SHARED_TC_COUNTERS
2262 # Timer Interrupt Frequency Configuration
2266 prompt "Timer frequency"
2269 Allows the configuration of the timer frequency.
2272 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2275 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2278 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2281 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2284 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2287 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2290 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2294 config SYS_SUPPORTS_48HZ
2297 config SYS_SUPPORTS_100HZ
2300 config SYS_SUPPORTS_128HZ
2303 config SYS_SUPPORTS_250HZ
2306 config SYS_SUPPORTS_256HZ
2309 config SYS_SUPPORTS_1000HZ
2312 config SYS_SUPPORTS_1024HZ
2315 config SYS_SUPPORTS_ARBIT_HZ
2317 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2318 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2319 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2320 !SYS_SUPPORTS_1024HZ
2325 default 100 if HZ_100
2326 default 128 if HZ_128
2327 default 250 if HZ_250
2328 default 256 if HZ_256
2329 default 1000 if HZ_1000
2330 default 1024 if HZ_1024
2332 source "kernel/Kconfig.preempt"
2335 bool "Kexec system call"
2337 kexec is a system call that implements the ability to shutdown your
2338 current kernel, and to start another kernel. It is like a reboot
2339 but it is independent of the system firmware. And like a reboot
2340 you can start any kernel with it, not just Linux.
2342 The name comes from the similarity to the exec system call.
2344 It is an ongoing process to be certain the hardware in a machine
2345 is properly shutdown, so do not be surprised if this code does not
2346 initially work for you. It may help to enable device hotplugging
2347 support. As of this writing the exact hardware interface is
2348 strongly in flux, so no good recommendation can be made.
2351 bool "Kernel crash dumps"
2353 Generate crash dump after being started by kexec.
2354 This should be normally only set in special crash dump kernels
2355 which are loaded in the main kernel with kexec-tools into
2356 a specially reserved region and then later executed after
2357 a crash by kdump/kexec. The crash dump kernel must be compiled
2358 to a memory address not used by the main kernel or firmware using
2361 config PHYSICAL_START
2362 hex "Physical address where the kernel is loaded"
2363 default "0xffffffff84000000" if 64BIT
2364 default "0x84000000" if 32BIT
2365 depends on CRASH_DUMP
2367 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2368 If you plan to use kernel for capturing the crash dump change
2369 this value to start of the reserved region (the "X" value as
2370 specified in the "crashkernel=YM@XM" command line boot parameter
2371 passed to the panic-ed kernel).
2374 bool "Enable seccomp to safely compute untrusted bytecode"
2378 This kernel feature is useful for number crunching applications
2379 that may need to compute untrusted bytecode during their
2380 execution. By using pipes or other transports made available to
2381 the process as file descriptors supporting the read/write
2382 syscalls, it's possible to isolate those applications in
2383 their own address space using seccomp. Once seccomp is
2384 enabled via /proc/<pid>/seccomp, it cannot be disabled
2385 and the task is only allowed to execute a few safe syscalls
2386 defined by each seccomp mode.
2388 If unsure, say Y. Only embedded should say N here.
2393 select OF_EARLY_FLATTREE
2398 config LOCKDEP_SUPPORT
2402 config STACKTRACE_SUPPORT
2406 source "init/Kconfig"
2408 source "kernel/Kconfig.freezer"
2410 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2418 bool "Support for PCI controller"
2419 depends on HW_HAS_PCI
2421 select GENERIC_PCI_IOMAP
2422 select NO_GENERIC_PCI_IOPORT_MAP
2424 Find out whether you have a PCI motherboard. PCI is the name of a
2425 bus system, i.e. the way the CPU talks to the other stuff inside
2426 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2432 source "drivers/pci/Kconfig"
2434 source "drivers/pci/pcie/Kconfig"
2437 # ISA support is now enabled via select. Too many systems still have the one
2438 # or other ISA chip on the board that users don't know about so don't expect
2439 # users to choose the right thing ...
2446 depends on HW_HAS_EISA
2448 select GENERIC_ISA_DMA
2450 The Extended Industry Standard Architecture (EISA) bus was
2451 developed as an open alternative to the IBM MicroChannel bus.
2453 The EISA bus provided some of the features of the IBM MicroChannel
2454 bus while maintaining backward compatibility with cards made for
2455 the older ISA bus. The EISA bus saw limited use between 1988 and
2456 1995 when it was made obsolete by the PCI bus.
2458 Say Y here if you are building a kernel for an EISA-based machine.
2462 source "drivers/eisa/Kconfig"
2465 bool "TURBOchannel support"
2466 depends on MACH_DECSTATION
2468 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2469 processors. TURBOchannel programming specifications are available
2471 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2473 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2474 Linux driver support status is documented at:
2475 <http://www.linux-mips.org/wiki/DECstation>
2485 select MIPS_EXTERNAL_TIMER
2490 source "drivers/pcmcia/Kconfig"
2492 source "drivers/pci/hotplug/Kconfig"
2495 bool "RapidIO support"
2499 If you say Y here, the kernel will include drivers and
2500 infrastructure code to support RapidIO interconnect devices.
2502 source "drivers/rapidio/Kconfig"
2506 menu "Executable file formats"
2508 source "fs/Kconfig.binfmt"
2513 config MIPS32_COMPAT
2514 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2517 Select this option if you want Linux/MIPS 32-bit binary
2518 compatibility. Since all software available for Linux/MIPS is
2519 currently 32-bit you should say Y here.
2523 depends on MIPS32_COMPAT
2524 select ARCH_WANT_OLD_COMPAT_IPC
2527 config SYSVIPC_COMPAT
2529 depends on COMPAT && SYSVIPC
2533 bool "Kernel support for o32 binaries"
2534 depends on MIPS32_COMPAT
2536 Select this option if you want to run o32 binaries. These are pure
2537 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2538 existing binaries are in this format.
2543 bool "Kernel support for n32 binaries"
2544 depends on MIPS32_COMPAT
2546 Select this option if you want to run n32 binaries. These are
2547 64-bit binaries using 32-bit quantities for addressing and certain
2548 data that would normally be 64-bit. They are used in special
2555 default y if MIPS32_O32 || MIPS32_N32
2559 menu "Power management options"
2561 config ARCH_HIBERNATION_POSSIBLE
2563 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2565 config ARCH_SUSPEND_POSSIBLE
2567 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2569 source "kernel/power/Kconfig"
2573 source "arch/mips/kernel/cpufreq/Kconfig"
2575 source "net/Kconfig"
2577 source "drivers/Kconfig"
2579 source "drivers/firmware/Kconfig"
2583 source "arch/mips/Kconfig.debug"
2585 source "security/Kconfig"
2587 source "crypto/Kconfig"
2589 source "lib/Kconfig"
2591 source "arch/mips/kvm/Kconfig"