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"
339 select CPU_MIPSR2_IRQ_VI
340 select CPU_MIPSR2_IRQ_EI
341 select DMA_NONCOHERENT
344 select MIPS_CPU_SCACHE
346 select SYS_HAS_CPU_MIPS32_R1
347 select SYS_HAS_CPU_MIPS32_R2
348 select SYS_HAS_CPU_MIPS64_R1
349 select SYS_HAS_EARLY_PRINTK
350 select SYS_SUPPORTS_32BIT_KERNEL
351 select SYS_SUPPORTS_64BIT_KERNEL
352 select SYS_SUPPORTS_BIG_ENDIAN
353 select SYS_SUPPORTS_LITTLE_ENDIAN
354 select SYS_SUPPORTS_SMARTMIPS
355 select USB_ARCH_HAS_EHCI
356 select USB_EHCI_BIG_ENDIAN_DESC
357 select USB_EHCI_BIG_ENDIAN_MMIO
360 This enables support for the MIPS Technologies SEAD3 evaluation
364 bool "NEC EMMA2RH Mark-eins board"
368 This enables support for the NEC Electronics Mark-eins boards.
371 bool "NEC VR4100 series based machines"
374 select SYS_HAS_CPU_VR41XX
375 select ARCH_REQUIRE_GPIOLIB
378 bool "NXP STB220 board"
381 Support for NXP Semiconductors STB220 Development Board.
388 Support for NXP Semiconductors STB225 Development Board.
391 bool "PMC-Sierra MSP chipsets"
394 select DMA_NONCOHERENT
396 select NO_EXCEPT_FILL
398 select SYS_HAS_CPU_MIPS32_R1
399 select SYS_HAS_CPU_MIPS32_R2
400 select SYS_SUPPORTS_32BIT_KERNEL
401 select SYS_SUPPORTS_BIG_ENDIAN
404 select SERIAL_8250_CONSOLE
406 This adds support for the PMC-Sierra family of Multi-Service
407 Processor System-On-A-Chips. These parts include a number
408 of integrated peripherals, interfaces and DSPs in addition to
409 a variety of MIPS cores.
415 select CPU_MIPSR2_IRQ_VI
416 select CPU_MIPSR2_IRQ_EI
418 select DMA_NONCOHERENT
420 select SYS_HAS_EARLY_PRINTK
421 select SYS_HAS_CPU_MIPS32_R2
422 select SYS_SUPPORTS_32BIT_KERNEL
423 select SYS_SUPPORTS_BIG_ENDIAN
424 select SYS_SUPPORTS_HIGHMEM
425 select USB_OHCI_LITTLE_ENDIAN
427 This enables support for the Cisco PowerTV Platform.
430 bool "Ralink based machines"
434 select DMA_NONCOHERENT
437 select SYS_HAS_CPU_MIPS32_R1
438 select SYS_HAS_CPU_MIPS32_R2
439 select SYS_SUPPORTS_32BIT_KERNEL
440 select SYS_SUPPORTS_LITTLE_ENDIAN
441 select SYS_HAS_EARLY_PRINTK
442 select HAVE_MACH_CLKDEV
446 bool "SGI IP22 (Indy/Indigo2)"
452 select DEFAULT_SGI_PARTITION
453 select DMA_NONCOHERENT
457 select IP22_CPU_SCACHE
459 select GENERIC_ISA_DMA_SUPPORT_BROKEN
461 select SGI_HAS_INDYDOG
467 select SYS_HAS_CPU_R4X00
468 select SYS_HAS_CPU_R5000
470 # Disable EARLY_PRINTK for now since it leads to overwritten prom
471 # memory during early boot on some machines.
473 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
474 # for a more details discussion
476 # select SYS_HAS_EARLY_PRINTK
477 select SYS_SUPPORTS_32BIT_KERNEL
478 select SYS_SUPPORTS_64BIT_KERNEL
479 select SYS_SUPPORTS_BIG_ENDIAN
481 This are the SGI Indy, Challenge S and Indigo2, as well as certain
482 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
483 that runs on these, say Y here.
486 bool "SGI IP27 (Origin200/2000)"
490 select DEFAULT_SGI_PARTITION
492 select SYS_HAS_EARLY_PRINTK
494 select NR_CPUS_DEFAULT_64
495 select SYS_HAS_CPU_R10000
496 select SYS_SUPPORTS_64BIT_KERNEL
497 select SYS_SUPPORTS_BIG_ENDIAN
498 select SYS_SUPPORTS_NUMA
499 select SYS_SUPPORTS_SMP
501 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
502 workstations. To compile a Linux kernel that runs on these, say Y
506 bool "SGI IP28 (Indigo2 R10k)"
512 select DEFAULT_SGI_PARTITION
513 select DMA_NONCOHERENT
514 select GENERIC_ISA_DMA_SUPPORT_BROKEN
520 select SGI_HAS_INDYDOG
526 select SYS_HAS_CPU_R10000
528 # Disable EARLY_PRINTK for now since it leads to overwritten prom
529 # memory during early boot on some machines.
531 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
532 # for a more details discussion
534 # select SYS_HAS_EARLY_PRINTK
535 select SYS_SUPPORTS_64BIT_KERNEL
536 select SYS_SUPPORTS_BIG_ENDIAN
538 This is the SGI Indigo2 with R10000 processor. To compile a Linux
539 kernel that runs on these, say Y here.
548 select DMA_NONCOHERENT
551 select R5000_CPU_SCACHE
552 select RM7000_CPU_SCACHE
553 select SYS_HAS_CPU_R5000
554 select SYS_HAS_CPU_R10000 if BROKEN
555 select SYS_HAS_CPU_RM7000
556 select SYS_HAS_CPU_NEVADA
557 select SYS_SUPPORTS_64BIT_KERNEL
558 select SYS_SUPPORTS_BIG_ENDIAN
560 If you want this kernel to run on SGI O2 workstation, say Y here.
563 bool "Sibyte BCM91120C-CRhine"
566 select SIBYTE_BCM1120
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_LITTLE_ENDIAN
573 bool "Sibyte BCM91120x-Carmel"
576 select SIBYTE_BCM1120
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_LITTLE_ENDIAN
583 bool "Sibyte BCM91125C-CRhone"
586 select SIBYTE_BCM1125
588 select SYS_HAS_CPU_SB1
589 select SYS_SUPPORTS_BIG_ENDIAN
590 select SYS_SUPPORTS_HIGHMEM
591 select SYS_SUPPORTS_LITTLE_ENDIAN
594 bool "Sibyte BCM91125E-Rhone"
597 select SIBYTE_BCM1125H
599 select SYS_HAS_CPU_SB1
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select SYS_SUPPORTS_LITTLE_ENDIAN
604 bool "Sibyte BCM91250A-SWARM"
607 select HAVE_PATA_PLATFORM
608 select NR_CPUS_DEFAULT_2
611 select SYS_HAS_CPU_SB1
612 select SYS_SUPPORTS_BIG_ENDIAN
613 select SYS_SUPPORTS_HIGHMEM
614 select SYS_SUPPORTS_LITTLE_ENDIAN
615 select ZONE_DMA32 if 64BIT
617 config SIBYTE_LITTLESUR
618 bool "Sibyte BCM91250C2-LittleSur"
621 select HAVE_PATA_PLATFORM
622 select NR_CPUS_DEFAULT_2
625 select SYS_HAS_CPU_SB1
626 select SYS_SUPPORTS_BIG_ENDIAN
627 select SYS_SUPPORTS_HIGHMEM
628 select SYS_SUPPORTS_LITTLE_ENDIAN
630 config SIBYTE_SENTOSA
631 bool "Sibyte BCM91250E-Sentosa"
634 select NR_CPUS_DEFAULT_2
637 select SYS_HAS_CPU_SB1
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_LITTLE_ENDIAN
642 bool "Sibyte BCM91480B-BigSur"
645 select NR_CPUS_DEFAULT_4
646 select SIBYTE_BCM1x80
648 select SYS_HAS_CPU_SB1
649 select SYS_SUPPORTS_BIG_ENDIAN
650 select SYS_SUPPORTS_HIGHMEM
651 select SYS_SUPPORTS_LITTLE_ENDIAN
652 select ZONE_DMA32 if 64BIT
655 bool "SNI RM200/300/400"
656 select FW_ARC if CPU_LITTLE_ENDIAN
657 select FW_ARC32 if CPU_LITTLE_ENDIAN
658 select FW_SNIPROM if CPU_BIG_ENDIAN
659 select ARCH_MAY_HAVE_PC_FDC
663 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
664 select DMA_NONCOHERENT
665 select GENERIC_ISA_DMA
666 select HAVE_PCSPKR_PLATFORM
673 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
674 select SYS_HAS_CPU_R4X00
675 select SYS_HAS_CPU_R5000
676 select SYS_HAS_CPU_R10000
677 select R5000_CPU_SCACHE
678 select SYS_HAS_EARLY_PRINTK
679 select SYS_SUPPORTS_32BIT_KERNEL
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_HIGHMEM
683 select SYS_SUPPORTS_LITTLE_ENDIAN
685 The SNI RM200/300/400 are MIPS-based machines manufactured by
686 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
687 Technology and now in turn merged with Fujitsu. Say Y here to
688 support this machine type.
691 bool "Toshiba TX39 series based machines"
694 bool "Toshiba TX49 series based machines"
696 config MIKROTIK_RB532
697 bool "Mikrotik RB532 boards"
700 select DMA_NONCOHERENT
703 select SYS_HAS_CPU_MIPS32_R1
704 select SYS_SUPPORTS_32BIT_KERNEL
705 select SYS_SUPPORTS_LITTLE_ENDIAN
708 select ARCH_REQUIRE_GPIOLIB
710 Support the Mikrotik(tm) RouterBoard 532 series,
711 based on the IDT RC32434 SoC.
714 bool "Wind River PPMC board"
719 select DMA_NONCOHERENT
721 select PCI_GT64XXX_PCI0
723 select SYS_HAS_CPU_MIPS32_R1
724 select SYS_HAS_CPU_MIPS32_R2
725 select SYS_HAS_CPU_MIPS64_R1
726 select SYS_HAS_CPU_NEVADA
727 select SYS_HAS_CPU_RM7000
728 select SYS_SUPPORTS_32BIT_KERNEL
729 select SYS_SUPPORTS_64BIT_KERNEL
730 select SYS_SUPPORTS_BIG_ENDIAN
731 select SYS_SUPPORTS_LITTLE_ENDIAN
733 This enables support for the Wind River MIPS32 4KC PPMC evaluation
734 board, which is based on GT64120 bridge chip.
736 config CAVIUM_OCTEON_SIMULATOR
737 bool "Cavium Networks Octeon Simulator"
739 select 64BIT_PHYS_ADDR
741 select SYS_SUPPORTS_64BIT_KERNEL
742 select SYS_SUPPORTS_BIG_ENDIAN
743 select SYS_SUPPORTS_HOTPLUG_CPU
744 select SYS_HAS_CPU_CAVIUM_OCTEON
747 The Octeon simulator is software performance model of the Cavium
748 Octeon Processor. It supports simulating Octeon processors on x86
751 config CAVIUM_OCTEON_REFERENCE_BOARD
752 bool "Cavium Networks Octeon reference board"
754 select 64BIT_PHYS_ADDR
756 select SYS_SUPPORTS_64BIT_KERNEL
757 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_HOTPLUG_CPU
760 select SYS_HAS_EARLY_PRINTK
761 select SYS_HAS_CPU_CAVIUM_OCTEON
764 select ARCH_SUPPORTS_MSI
766 select USB_ARCH_HAS_OHCI
767 select USB_ARCH_HAS_EHCI
770 This option supports all of the Octeon reference boards from Cavium
771 Networks. It builds a kernel that dynamically determines the Octeon
772 CPU type and supports all known board reference implementations.
773 Some of the supported boards are:
780 Say Y here for most Octeon reference boards.
783 bool "Netlogic XLR/XLS based systems"
786 select SYS_HAS_CPU_XLR
787 select SYS_SUPPORTS_SMP
790 select SYS_SUPPORTS_32BIT_KERNEL
791 select SYS_SUPPORTS_64BIT_KERNEL
792 select 64BIT_PHYS_ADDR
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
796 select NR_CPUS_DEFAULT_32
800 select ARCH_SUPPORTS_MSI
801 select ZONE_DMA32 if 64BIT
803 select SYS_HAS_EARLY_PRINTK
804 select USB_ARCH_HAS_OHCI if USB_SUPPORT
805 select USB_ARCH_HAS_EHCI if USB_SUPPORT
807 Support for systems based on Netlogic XLR and XLS processors.
808 Say Y here if you have a XLR or XLS based board.
811 bool "Netlogic XLP based systems"
814 select SYS_HAS_CPU_XLP
815 select SYS_SUPPORTS_SMP
817 select SYS_SUPPORTS_32BIT_KERNEL
818 select SYS_SUPPORTS_64BIT_KERNEL
819 select 64BIT_PHYS_ADDR
820 select SYS_SUPPORTS_BIG_ENDIAN
821 select SYS_SUPPORTS_LITTLE_ENDIAN
822 select SYS_SUPPORTS_HIGHMEM
824 select NR_CPUS_DEFAULT_32
828 select ZONE_DMA32 if 64BIT
830 select SYS_HAS_EARLY_PRINTK
833 This board is based on Netlogic XLP Processor.
834 Say Y here if you have a XLP based board.
838 source "arch/mips/alchemy/Kconfig"
839 source "arch/mips/ath79/Kconfig"
840 source "arch/mips/bcm47xx/Kconfig"
841 source "arch/mips/bcm63xx/Kconfig"
842 source "arch/mips/jazz/Kconfig"
843 source "arch/mips/jz4740/Kconfig"
844 source "arch/mips/lantiq/Kconfig"
845 source "arch/mips/lasat/Kconfig"
846 source "arch/mips/pmcs-msp71xx/Kconfig"
847 source "arch/mips/powertv/Kconfig"
848 source "arch/mips/ralink/Kconfig"
849 source "arch/mips/sgi-ip27/Kconfig"
850 source "arch/mips/sibyte/Kconfig"
851 source "arch/mips/txx9/Kconfig"
852 source "arch/mips/vr41xx/Kconfig"
853 source "arch/mips/cavium-octeon/Kconfig"
854 source "arch/mips/loongson/Kconfig"
855 source "arch/mips/loongson1/Kconfig"
856 source "arch/mips/netlogic/Kconfig"
860 config RWSEM_GENERIC_SPINLOCK
864 config RWSEM_XCHGADD_ALGORITHM
867 config ARCH_HAS_ILOG2_U32
871 config ARCH_HAS_ILOG2_U64
875 config GENERIC_HWEIGHT
879 config GENERIC_CALIBRATE_DELAY
883 config SCHED_OMIT_FRAME_POINTER
888 # Select some configuration options automatically based on user selections.
893 config ARCH_MAY_HAVE_PC_FDC
937 select ARCH_REQUIRE_GPIOLIB
943 config ARCH_DMA_ADDR_T_64BIT
944 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
949 config DMA_NONCOHERENT
951 select NEED_DMA_MAP_STATE
953 config NEED_DMA_MAP_STATE
956 config SYS_HAS_EARLY_PRINTK
960 bool "Support for hot-pluggable CPUs"
961 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
963 Say Y here to allow turning CPUs off and on. CPUs can be
964 controlled through /sys/devices/system/cpu.
965 (Note: power management support will enable this option
966 automatically on SMP systems. )
967 Say N if you want to disable CPU hotplug.
969 config SYS_SUPPORTS_HOTPLUG_CPU
993 config GENERIC_ISA_DMA
995 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
998 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1000 select GENERIC_ISA_DMA
1008 config HOLES_IN_ZONE
1012 # Endianness selection. Sufficiently obscure so many users don't know what to
1013 # answer,so we try hard to limit the available choices. Also the use of a
1014 # choice statement should be more obvious to the user.
1017 prompt "Endianness selection"
1019 Some MIPS machines can be configured for either little or big endian
1020 byte order. These modes require different kernels and a different
1021 Linux distribution. In general there is one preferred byteorder for a
1022 particular system but some systems are just as commonly used in the
1023 one or the other endianness.
1025 config CPU_BIG_ENDIAN
1027 depends on SYS_SUPPORTS_BIG_ENDIAN
1029 config CPU_LITTLE_ENDIAN
1030 bool "Little endian"
1031 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1039 config SYS_SUPPORTS_APM_EMULATION
1042 config SYS_SUPPORTS_BIG_ENDIAN
1045 config SYS_SUPPORTS_LITTLE_ENDIAN
1048 config SYS_SUPPORTS_HUGETLBFS
1050 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1053 config MIPS_HUGE_TLB_SUPPORT
1054 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1077 config PCI_GT64XXX_PCI0
1080 config NO_EXCEPT_FILL
1087 select DMA_NONCOHERENT
1089 select SWAP_IO_SPACE
1090 select SYS_HAS_CPU_R5500
1091 select SYS_SUPPORTS_32BIT_KERNEL
1092 select SYS_SUPPORTS_64BIT_KERNEL
1093 select SYS_SUPPORTS_BIG_ENDIAN
1100 select DMA_NONCOHERENT
1101 select SYS_HAS_CPU_MIPS32_R2
1102 select SYS_SUPPORTS_32BIT_KERNEL
1103 select SYS_SUPPORTS_LITTLE_ENDIAN
1104 select SYS_SUPPORTS_BIG_ENDIAN
1106 select CPU_MIPSR2_IRQ_VI
1112 config SWAP_IO_SPACE
1115 config SGI_HAS_INDYDOG
1127 config SGI_HAS_ZILOG
1130 config SGI_HAS_I8042
1133 config DEFAULT_SGI_PARTITION
1145 config MIPS_L1_CACHE_SHIFT
1147 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1148 default "6" if MIPS_CPU_SCACHE
1149 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1152 config HAVE_STD_PC_SERIAL_PORT
1156 bool "ARC console support"
1157 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1161 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1166 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1175 menu "CPU selection"
1181 config CPU_LOONGSON2E
1183 depends on SYS_HAS_CPU_LOONGSON2E
1184 select CPU_LOONGSON2
1186 The Loongson 2E processor implements the MIPS III instruction set
1187 with many extensions.
1189 It has an internal FPGA northbridge, which is compatible to
1192 config CPU_LOONGSON2F
1194 depends on SYS_HAS_CPU_LOONGSON2F
1195 select CPU_LOONGSON2
1197 select ARCH_REQUIRE_GPIOLIB
1199 The Loongson 2F processor implements the MIPS III instruction set
1200 with many extensions.
1202 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1203 have a similar programming interface with FPGA northbridge used in
1206 config CPU_LOONGSON1B
1208 depends on SYS_HAS_CPU_LOONGSON1B
1209 select CPU_LOONGSON1
1211 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1212 release 2 instruction set.
1214 config CPU_MIPS32_R1
1215 bool "MIPS32 Release 1"
1216 depends on SYS_HAS_CPU_MIPS32_R1
1217 select CPU_HAS_PREFETCH
1218 select CPU_SUPPORTS_32BIT_KERNEL
1219 select CPU_SUPPORTS_HIGHMEM
1221 Choose this option to build a kernel for release 1 or later of the
1222 MIPS32 architecture. Most modern embedded systems with a 32-bit
1223 MIPS processor are based on a MIPS32 processor. If you know the
1224 specific type of processor in your system, choose those that one
1225 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1226 Release 2 of the MIPS32 architecture is available since several
1227 years so chances are you even have a MIPS32 Release 2 processor
1228 in which case you should choose CPU_MIPS32_R2 instead for better
1231 config CPU_MIPS32_R2
1232 bool "MIPS32 Release 2"
1233 depends on SYS_HAS_CPU_MIPS32_R2
1234 select CPU_HAS_PREFETCH
1235 select CPU_SUPPORTS_32BIT_KERNEL
1236 select CPU_SUPPORTS_HIGHMEM
1239 Choose this option to build a kernel for release 2 or later of the
1240 MIPS32 architecture. Most modern embedded systems with a 32-bit
1241 MIPS processor are based on a MIPS32 processor. If you know the
1242 specific type of processor in your system, choose those that one
1243 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1245 config CPU_MIPS64_R1
1246 bool "MIPS64 Release 1"
1247 depends on SYS_HAS_CPU_MIPS64_R1
1248 select CPU_HAS_PREFETCH
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1251 select CPU_SUPPORTS_HIGHMEM
1252 select CPU_SUPPORTS_HUGEPAGES
1254 Choose this option to build a kernel for release 1 or later of the
1255 MIPS64 architecture. Many modern embedded systems with a 64-bit
1256 MIPS processor are based on a MIPS64 processor. If you know the
1257 specific type of processor in your system, choose those that one
1258 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1259 Release 2 of the MIPS64 architecture is available since several
1260 years so chances are you even have a MIPS64 Release 2 processor
1261 in which case you should choose CPU_MIPS64_R2 instead for better
1264 config CPU_MIPS64_R2
1265 bool "MIPS64 Release 2"
1266 depends on SYS_HAS_CPU_MIPS64_R2
1267 select CPU_HAS_PREFETCH
1268 select CPU_SUPPORTS_32BIT_KERNEL
1269 select CPU_SUPPORTS_64BIT_KERNEL
1270 select CPU_SUPPORTS_HIGHMEM
1271 select CPU_SUPPORTS_HUGEPAGES
1273 Choose this option to build a kernel for release 2 or later of the
1274 MIPS64 architecture. Many modern embedded systems with a 64-bit
1275 MIPS processor are based on a MIPS64 processor. If you know the
1276 specific type of processor in your system, choose those that one
1277 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1281 depends on SYS_HAS_CPU_R3000
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_HIGHMEM
1286 Please make sure to pick the right CPU type. Linux/MIPS is not
1287 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1288 *not* work on R4000 machines and vice versa. However, since most
1289 of the supported machines have an R4000 (or similar) CPU, R4x00
1290 might be a safe bet. If the resulting kernel does not work,
1291 try to recompile with R3000.
1295 depends on SYS_HAS_CPU_TX39XX
1296 select CPU_SUPPORTS_32BIT_KERNEL
1300 depends on SYS_HAS_CPU_VR41XX
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1304 The options selects support for the NEC VR4100 series of processors.
1305 Only choose this option if you have one of these processors as a
1306 kernel built with this option will not run on any other type of
1307 processor or vice versa.
1311 depends on SYS_HAS_CPU_R4300
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_64BIT_KERNEL
1315 MIPS Technologies R4300-series processors.
1319 depends on SYS_HAS_CPU_R4X00
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1322 select CPU_SUPPORTS_HUGEPAGES
1324 MIPS Technologies R4000-series processors other than 4300, including
1325 the R4000, R4400, R4600, and 4700.
1329 depends on SYS_HAS_CPU_TX49XX
1330 select CPU_HAS_PREFETCH
1331 select CPU_SUPPORTS_32BIT_KERNEL
1332 select CPU_SUPPORTS_64BIT_KERNEL
1333 select CPU_SUPPORTS_HUGEPAGES
1337 depends on SYS_HAS_CPU_R5000
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HUGEPAGES
1342 MIPS Technologies R5000-series processors other than the Nevada.
1346 depends on SYS_HAS_CPU_R5432
1347 select CPU_SUPPORTS_32BIT_KERNEL
1348 select CPU_SUPPORTS_64BIT_KERNEL
1349 select CPU_SUPPORTS_HUGEPAGES
1353 depends on SYS_HAS_CPU_R5500
1354 select CPU_SUPPORTS_32BIT_KERNEL
1355 select CPU_SUPPORTS_64BIT_KERNEL
1356 select CPU_SUPPORTS_HUGEPAGES
1358 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1363 depends on SYS_HAS_CPU_R6000
1364 select CPU_SUPPORTS_32BIT_KERNEL
1366 MIPS Technologies R6000 and R6000A series processors. Note these
1367 processors are extremely rare and the support for them is incomplete.
1371 depends on SYS_HAS_CPU_NEVADA
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HUGEPAGES
1376 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1380 depends on SYS_HAS_CPU_R8000
1381 select CPU_HAS_PREFETCH
1382 select CPU_SUPPORTS_64BIT_KERNEL
1384 MIPS Technologies R8000 processors. Note these processors are
1385 uncommon and the support for them is incomplete.
1389 depends on SYS_HAS_CPU_R10000
1390 select CPU_HAS_PREFETCH
1391 select CPU_SUPPORTS_32BIT_KERNEL
1392 select CPU_SUPPORTS_64BIT_KERNEL
1393 select CPU_SUPPORTS_HIGHMEM
1394 select CPU_SUPPORTS_HUGEPAGES
1396 MIPS Technologies R10000-series processors.
1400 depends on SYS_HAS_CPU_RM7000
1401 select CPU_HAS_PREFETCH
1402 select CPU_SUPPORTS_32BIT_KERNEL
1403 select CPU_SUPPORTS_64BIT_KERNEL
1404 select CPU_SUPPORTS_HIGHMEM
1405 select CPU_SUPPORTS_HUGEPAGES
1409 depends on SYS_HAS_CPU_SB1
1410 select CPU_SUPPORTS_32BIT_KERNEL
1411 select CPU_SUPPORTS_64BIT_KERNEL
1412 select CPU_SUPPORTS_HIGHMEM
1413 select CPU_SUPPORTS_HUGEPAGES
1414 select WEAK_ORDERING
1416 config CPU_CAVIUM_OCTEON
1417 bool "Cavium Octeon processor"
1418 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1419 select ARCH_SPARSEMEM_ENABLE
1420 select CPU_HAS_PREFETCH
1421 select CPU_SUPPORTS_64BIT_KERNEL
1422 select SYS_SUPPORTS_SMP
1423 select NR_CPUS_DEFAULT_16
1424 select WEAK_ORDERING
1425 select CPU_SUPPORTS_HIGHMEM
1426 select CPU_SUPPORTS_HUGEPAGES
1430 The Cavium Octeon processor is a highly integrated chip containing
1431 many ethernet hardware widgets for networking tasks. The processor
1432 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1433 Full details can be found at http://www.caviumnetworks.com.
1435 config CPU_BMIPS3300
1437 depends on SYS_HAS_CPU_BMIPS3300
1440 Broadcom BMIPS3300 processors.
1442 config CPU_BMIPS4350
1444 depends on SYS_HAS_CPU_BMIPS4350
1446 select SYS_SUPPORTS_SMP
1447 select SYS_SUPPORTS_HOTPLUG_CPU
1449 Broadcom BMIPS4350 ("VIPER") processors.
1451 config CPU_BMIPS4380
1453 depends on SYS_HAS_CPU_BMIPS4380
1455 select SYS_SUPPORTS_SMP
1456 select SYS_SUPPORTS_HOTPLUG_CPU
1458 Broadcom BMIPS4380 processors.
1460 config CPU_BMIPS5000
1462 depends on SYS_HAS_CPU_BMIPS5000
1464 select CPU_SUPPORTS_HIGHMEM
1465 select MIPS_CPU_SCACHE
1466 select SYS_SUPPORTS_SMP
1467 select SYS_SUPPORTS_HOTPLUG_CPU
1469 Broadcom BMIPS5000 processors.
1472 bool "Netlogic XLR SoC"
1473 depends on SYS_HAS_CPU_XLR
1474 select CPU_SUPPORTS_32BIT_KERNEL
1475 select CPU_SUPPORTS_64BIT_KERNEL
1476 select CPU_SUPPORTS_HIGHMEM
1477 select CPU_SUPPORTS_HUGEPAGES
1478 select WEAK_ORDERING
1479 select WEAK_REORDERING_BEYOND_LLSC
1481 Netlogic Microsystems XLR/XLS processors.
1484 bool "Netlogic XLP SoC"
1485 depends on SYS_HAS_CPU_XLP
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select WEAK_ORDERING
1490 select WEAK_REORDERING_BEYOND_LLSC
1491 select CPU_HAS_PREFETCH
1494 Netlogic Microsystems XLP processors.
1498 config CPU_NOP_WORKAROUNDS
1501 config CPU_JUMP_WORKAROUNDS
1504 config CPU_LOONGSON2F_WORKAROUNDS
1505 bool "Loongson 2F Workarounds"
1507 select CPU_NOP_WORKAROUNDS
1508 select CPU_JUMP_WORKAROUNDS
1510 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1511 require workarounds. Without workarounds the system may hang
1512 unexpectedly. For more information please refer to the gas
1513 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1515 Loongson 2F03 and later have fixed these issues and no workarounds
1516 are needed. The workarounds have no significant side effect on them
1517 but may decrease the performance of the system so this option should
1518 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1521 If unsure, please say Y.
1522 endif # CPU_LOONGSON2F
1524 config SYS_SUPPORTS_ZBOOT
1526 select HAVE_KERNEL_GZIP
1527 select HAVE_KERNEL_BZIP2
1528 select HAVE_KERNEL_LZMA
1529 select HAVE_KERNEL_LZO
1531 config SYS_SUPPORTS_ZBOOT_UART16550
1533 select SYS_SUPPORTS_ZBOOT
1535 config CPU_LOONGSON2
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1540 select CPU_SUPPORTS_HUGEPAGES
1542 config CPU_LOONGSON1
1546 select CPU_HAS_PREFETCH
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select DMA_NONCOHERENT
1556 select SWAP_IO_SPACE
1557 select WEAK_ORDERING
1559 config SYS_HAS_CPU_LOONGSON2E
1562 config SYS_HAS_CPU_LOONGSON2F
1564 select CPU_SUPPORTS_CPUFREQ
1565 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1566 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1568 config SYS_HAS_CPU_LOONGSON1B
1571 config SYS_HAS_CPU_MIPS32_R1
1574 config SYS_HAS_CPU_MIPS32_R2
1577 config SYS_HAS_CPU_MIPS64_R1
1580 config SYS_HAS_CPU_MIPS64_R2
1583 config SYS_HAS_CPU_R3000
1586 config SYS_HAS_CPU_TX39XX
1589 config SYS_HAS_CPU_VR41XX
1592 config SYS_HAS_CPU_R4300
1595 config SYS_HAS_CPU_R4X00
1598 config SYS_HAS_CPU_TX49XX
1601 config SYS_HAS_CPU_R5000
1604 config SYS_HAS_CPU_R5432
1607 config SYS_HAS_CPU_R5500
1610 config SYS_HAS_CPU_R6000
1613 config SYS_HAS_CPU_NEVADA
1616 config SYS_HAS_CPU_R8000
1619 config SYS_HAS_CPU_R10000
1622 config SYS_HAS_CPU_RM7000
1625 config SYS_HAS_CPU_SB1
1628 config SYS_HAS_CPU_CAVIUM_OCTEON
1631 config SYS_HAS_CPU_BMIPS3300
1634 config SYS_HAS_CPU_BMIPS4350
1637 config SYS_HAS_CPU_BMIPS4380
1640 config SYS_HAS_CPU_BMIPS5000
1643 config SYS_HAS_CPU_XLR
1646 config SYS_HAS_CPU_XLP
1650 # CPU may reorder R->R, R->W, W->R, W->W
1651 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1653 config WEAK_ORDERING
1657 # CPU may reorder reads and writes beyond LL/SC
1658 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1660 config WEAK_REORDERING_BEYOND_LLSC
1665 # These two indicate any level of the MIPS32 and MIPS64 architecture
1669 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1673 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1676 # These two indicate the revision of the architecture, either Release 1 or Release 2
1680 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1684 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1686 config SYS_SUPPORTS_32BIT_KERNEL
1688 config SYS_SUPPORTS_64BIT_KERNEL
1690 config CPU_SUPPORTS_32BIT_KERNEL
1692 config CPU_SUPPORTS_64BIT_KERNEL
1694 config CPU_SUPPORTS_CPUFREQ
1696 config CPU_SUPPORTS_ADDRWINCFG
1698 config CPU_SUPPORTS_HUGEPAGES
1700 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1702 config MIPS_PGD_C0_CONTEXT
1704 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1707 # Set to y for ptrace access to watch registers.
1709 config HARDWARE_WATCHPOINTS
1711 default y if CPU_MIPSR1 || CPU_MIPSR2
1716 prompt "Kernel code model"
1718 You should only select this option if you have a workload that
1719 actually benefits from 64-bit processing or if your machine has
1720 large memory. You will only be presented a single option in this
1721 menu if your system does not support both 32-bit and 64-bit kernels.
1724 bool "32-bit kernel"
1725 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1728 Select this option if you want to build a 32-bit kernel.
1730 bool "64-bit kernel"
1731 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1732 select HAVE_SYSCALL_WRAPPERS
1734 Select this option if you want to build a 64-bit kernel.
1739 bool "KVM Guest Kernel"
1741 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1743 config KVM_HOST_FREQ
1744 int "KVM Host Processor Frequency (MHz)"
1745 depends on KVM_GUEST
1748 Select this option if building a guest kernel for KVM to skip
1749 RTC emulation when determining guest CPU Frequency. Instead, the guest
1750 processor frequency is automatically derived from the host frequency.
1753 prompt "Kernel page size"
1754 default PAGE_SIZE_4KB
1756 config PAGE_SIZE_4KB
1758 depends on !CPU_LOONGSON2
1760 This option select the standard 4kB Linux page size. On some
1761 R3000-family processors this is the only available page size. Using
1762 4kB page size will minimize memory consumption and is therefore
1763 recommended for low memory systems.
1765 config PAGE_SIZE_8KB
1767 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1769 Using 8kB page size will result in higher performance kernel at
1770 the price of higher memory consumption. This option is available
1771 only on R8000 and cnMIPS processors. Note that you will need a
1772 suitable Linux distribution to support this.
1774 config PAGE_SIZE_16KB
1776 depends on !CPU_R3000 && !CPU_TX39XX
1778 Using 16kB page size will result in higher performance kernel at
1779 the price of higher memory consumption. This option is available on
1780 all non-R3000 family processors. Note that you will need a suitable
1781 Linux distribution to support this.
1783 config PAGE_SIZE_32KB
1785 depends on CPU_CAVIUM_OCTEON
1787 Using 32kB page size will result in higher performance kernel at
1788 the price of higher memory consumption. This option is available
1789 only on cnMIPS cores. Note that you will need a suitable Linux
1790 distribution to support this.
1792 config PAGE_SIZE_64KB
1794 depends on !CPU_R3000 && !CPU_TX39XX
1796 Using 64kB page size will result in higher performance kernel at
1797 the price of higher memory consumption. This option is available on
1798 all non-R3000 family processor. Not that at the time of this
1799 writing this option is still high experimental.
1803 config FORCE_MAX_ZONEORDER
1804 int "Maximum zone order"
1805 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1806 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1807 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1808 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1809 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1810 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1814 The kernel memory allocator divides physically contiguous memory
1815 blocks into "zones", where each zone is a power of two number of
1816 pages. This option selects the largest power of two that the kernel
1817 keeps in the memory allocator. If you need to allocate very large
1818 blocks of physically contiguous memory, then you may need to
1819 increase this value.
1821 This config option is actually maximum order plus one. For example,
1822 a value of 11 means that the largest free memory block is 2^10 pages.
1824 The page size is not necessarily 4KB. Keep this in mind
1825 when choosing a value for this option.
1830 config IP22_CPU_SCACHE
1835 # Support for a MIPS32 / MIPS64 style S-caches
1837 config MIPS_CPU_SCACHE
1841 config R5000_CPU_SCACHE
1845 config RM7000_CPU_SCACHE
1849 config SIBYTE_DMA_PAGEOPS
1850 bool "Use DMA to clear/copy pages"
1853 Instead of using the CPU to zero and copy pages, use a Data Mover
1854 channel. These DMA channels are otherwise unused by the standard
1855 SiByte Linux port. Seems to give a small performance benefit.
1857 config CPU_HAS_PREFETCH
1860 config CPU_GENERIC_DUMP_TLB
1862 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1866 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1868 config CPU_R4K_CACHE_TLB
1870 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1873 prompt "MIPS MT options"
1875 config MIPS_MT_DISABLED
1876 bool "Disable multithreading support."
1878 Use this option if your workload can't take advantage of
1879 MIPS hardware multithreading support. On systems that don't have
1880 the option of an MT-enabled processor this option will be the only
1881 option in this menu.
1884 bool "Use 1 TC on each available VPE for SMP"
1885 depends on SYS_SUPPORTS_MULTITHREADING
1886 select CPU_MIPSR2_IRQ_VI
1887 select CPU_MIPSR2_IRQ_EI
1889 select NR_CPUS_DEFAULT_2
1891 select SYS_SUPPORTS_SCHED_SMT if SMP
1892 select SYS_SUPPORTS_SMP
1894 select MIPS_PERF_SHARED_TC_COUNTERS
1896 This is a kernel model which is known a VSMP but lately has been
1897 marketesed into SMVP.
1898 Virtual SMP uses the processor's VPEs to implement virtual
1899 processors. In currently available configuration of the 34K processor
1900 this allows for a dual processor. Both processors will share the same
1901 primary caches; each will obtain the half of the TLB for it's own
1902 exclusive use. For a layman this model can be described as similar to
1903 what Intel calls Hyperthreading.
1905 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1908 bool "SMTC: Use all TCs on all VPEs for SMP"
1909 depends on CPU_MIPS32_R2
1910 #depends on CPU_MIPS64_R2 # once there is hardware ...
1911 depends on SYS_SUPPORTS_MULTITHREADING
1912 select CPU_MIPSR2_IRQ_VI
1913 select CPU_MIPSR2_IRQ_EI
1915 select NR_CPUS_DEFAULT_8
1917 select SYS_SUPPORTS_SMP
1920 This is a kernel model which is known a SMTC or lately has been
1921 marketesed into SMVP.
1922 is presenting the available TC's of the core as processors to Linux.
1923 On currently available 34K processors this means a Linux system will
1924 see up to 5 processors. The implementation of the SMTC kernel differs
1925 significantly from VSMP and cannot efficiently coexist in the same
1926 kernel binary so the choice between VSMP and SMTC is a compile time
1929 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1937 bool "SMT (multithreading) scheduler support"
1938 depends on SYS_SUPPORTS_SCHED_SMT
1941 SMT scheduler support improves the CPU scheduler's decision making
1942 when dealing with MIPS MT enabled cores at a cost of slightly
1943 increased overhead in some places. If unsure say N here.
1945 config SYS_SUPPORTS_SCHED_SMT
1948 config SYS_SUPPORTS_MULTITHREADING
1951 config MIPS_MT_FPAFF
1952 bool "Dynamic FPU affinity for FP-intensive threads"
1954 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1956 config MIPS_VPE_LOADER
1957 bool "VPE loader support."
1958 depends on SYS_SUPPORTS_MULTITHREADING
1959 select CPU_MIPSR2_IRQ_VI
1960 select CPU_MIPSR2_IRQ_EI
1963 Includes a loader for loading an elf relocatable object
1964 onto another VPE and running it.
1966 config MIPS_MT_SMTC_IM_BACKSTOP
1967 bool "Use per-TC register bits as backstop for inhibited IM bits"
1968 depends on MIPS_MT_SMTC
1971 To support multiple TC microthreads acting as "CPUs" within
1972 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1973 during interrupt handling. To support legacy drivers and interrupt
1974 controller management code, SMTC has a "backstop" to track and
1975 if necessary restore the interrupt mask. This has some performance
1976 impact on interrupt service overhead.
1978 config MIPS_MT_SMTC_IRQAFF
1979 bool "Support IRQ affinity API"
1980 depends on MIPS_MT_SMTC
1983 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1984 for SMTC Linux kernel. Requires platform support, of which
1985 an example can be found in the MIPS kernel i8259 and Malta
1986 platform code. Adds some overhead to interrupt dispatch, and
1987 should be used only if you know what you are doing.
1989 config MIPS_VPE_LOADER_TOM
1990 bool "Load VPE program into memory hidden from linux"
1991 depends on MIPS_VPE_LOADER
1994 The loader can use memory that is present but has been hidden from
1995 Linux using the kernel command line option "mem=xxMB". It's up to
1996 you to ensure the amount you put in the option and the space your
1997 program requires is less or equal to the amount physically present.
1999 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2000 config MIPS_VPE_APSP_API
2001 bool "Enable support for AP/SP API (RTLX)"
2002 depends on MIPS_VPE_LOADER
2006 bool "MIPS CMP framework support"
2007 depends on SYS_SUPPORTS_MIPS_CMP
2009 select SYS_SUPPORTS_SMP
2010 select SYS_SUPPORTS_SCHED_SMT if SMP
2011 select WEAK_ORDERING
2014 This is a placeholder option for the GCMP work. It will need to
2015 be handled differently...
2017 config SB1_PASS_1_WORKAROUNDS
2019 depends on CPU_SB1_PASS_1
2022 config SB1_PASS_2_WORKAROUNDS
2024 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2027 config SB1_PASS_2_1_WORKAROUNDS
2029 depends on CPU_SB1 && CPU_SB1_PASS_2
2033 config 64BIT_PHYS_ADDR
2036 config ARCH_PHYS_ADDR_T_64BIT
2037 def_bool 64BIT_PHYS_ADDR
2039 config CPU_HAS_SMARTMIPS
2040 depends on SYS_SUPPORTS_SMARTMIPS
2041 bool "Support for the SmartMIPS ASE"
2043 SmartMIPS is a extension of the MIPS32 architecture aimed at
2044 increased security at both hardware and software level for
2045 smartcards. Enabling this option will allow proper use of the
2046 SmartMIPS instructions by Linux applications. However a kernel with
2047 this option will not work on a MIPS core without SmartMIPS core. If
2048 you don't know you probably don't have SmartMIPS and should say N
2058 # Vectored interrupt mode is an R2 feature
2060 config CPU_MIPSR2_IRQ_VI
2064 # Extended interrupt mode is an R2 feature
2066 config CPU_MIPSR2_IRQ_EI
2071 depends on !CPU_R3000
2077 config CPU_DADDI_WORKAROUNDS
2080 config CPU_R4000_WORKAROUNDS
2082 select CPU_R4400_WORKAROUNDS
2084 config CPU_R4400_WORKAROUNDS
2088 # - Highmem only makes sense for the 32-bit kernel.
2089 # - The current highmem code will only work properly on physically indexed
2090 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2091 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2092 # moment we protect the user and offer the highmem option only on machines
2093 # where it's known to be safe. This will not offer highmem on a few systems
2094 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2095 # indexed CPUs but we're playing safe.
2096 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2097 # know they might have memory configurations that could make use of highmem
2101 bool "High Memory Support"
2102 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2104 config CPU_SUPPORTS_HIGHMEM
2107 config SYS_SUPPORTS_HIGHMEM
2110 config SYS_SUPPORTS_SMARTMIPS
2113 config ARCH_FLATMEM_ENABLE
2115 depends on !NUMA && !CPU_LOONGSON2
2117 config ARCH_DISCONTIGMEM_ENABLE
2119 default y if SGI_IP27
2121 Say Y to support efficient handling of discontiguous physical memory,
2122 for architectures which are either NUMA (Non-Uniform Memory Access)
2123 or have huge holes in the physical address space for other reasons.
2124 See <file:Documentation/vm/numa> for more.
2126 config ARCH_SPARSEMEM_ENABLE
2128 select SPARSEMEM_STATIC
2132 depends on SYS_SUPPORTS_NUMA
2134 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2135 Access). This option improves performance on systems with more
2136 than two nodes; on two node systems it is generally better to
2137 leave it disabled; on single node systems disable this option
2140 config SYS_SUPPORTS_NUMA
2146 depends on NEED_MULTIPLE_NODES
2148 config HW_PERF_EVENTS
2149 bool "Enable hardware performance counter support for perf events"
2150 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2153 Enable hardware performance counter support for perf events. If
2154 disabled, perf events will use software events only.
2159 bool "Multi-Processing support"
2160 depends on SYS_SUPPORTS_SMP
2161 select USE_GENERIC_SMP_HELPERS
2163 This enables support for systems with more than one CPU. If you have
2164 a system with only one CPU, like most personal computers, say N. If
2165 you have a system with more than one CPU, say Y.
2167 If you say N here, the kernel will run on single and multiprocessor
2168 machines, but will use only one CPU of a multiprocessor machine. If
2169 you say Y here, the kernel will run on many, but not all,
2170 singleprocessor machines. On a singleprocessor machine, the kernel
2171 will run faster if you say N here.
2173 People using multiprocessor machines who say Y here should also say
2174 Y to "Enhanced Real Time Clock Support", below.
2176 See also the SMP-HOWTO available at
2177 <http://www.tldp.org/docs.html#howto>.
2179 If you don't know what to do here, say N.
2184 config SYS_SUPPORTS_MIPS_CMP
2187 config SYS_SUPPORTS_SMP
2190 config NR_CPUS_DEFAULT_1
2193 config NR_CPUS_DEFAULT_2
2196 config NR_CPUS_DEFAULT_4
2199 config NR_CPUS_DEFAULT_8
2202 config NR_CPUS_DEFAULT_16
2205 config NR_CPUS_DEFAULT_32
2208 config NR_CPUS_DEFAULT_64
2212 int "Maximum number of CPUs (2-64)"
2213 range 1 64 if NR_CPUS_DEFAULT_1
2215 default "1" if NR_CPUS_DEFAULT_1
2216 default "2" if NR_CPUS_DEFAULT_2
2217 default "4" if NR_CPUS_DEFAULT_4
2218 default "8" if NR_CPUS_DEFAULT_8
2219 default "16" if NR_CPUS_DEFAULT_16
2220 default "32" if NR_CPUS_DEFAULT_32
2221 default "64" if NR_CPUS_DEFAULT_64
2223 This allows you to specify the maximum number of CPUs which this
2224 kernel will support. The maximum supported value is 32 for 32-bit
2225 kernel and 64 for 64-bit kernels; the minimum value which makes
2226 sense is 1 for Qemu (useful only for kernel debugging purposes)
2227 and 2 for all others.
2229 This is purely to save memory - each supported CPU adds
2230 approximately eight kilobytes to the kernel image. For best
2231 performance should round up your number of processors to the next
2234 config MIPS_PERF_SHARED_TC_COUNTERS
2238 # Timer Interrupt Frequency Configuration
2242 prompt "Timer frequency"
2245 Allows the configuration of the timer frequency.
2248 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2251 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2254 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2257 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2260 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2263 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2266 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2270 config SYS_SUPPORTS_48HZ
2273 config SYS_SUPPORTS_100HZ
2276 config SYS_SUPPORTS_128HZ
2279 config SYS_SUPPORTS_250HZ
2282 config SYS_SUPPORTS_256HZ
2285 config SYS_SUPPORTS_1000HZ
2288 config SYS_SUPPORTS_1024HZ
2291 config SYS_SUPPORTS_ARBIT_HZ
2293 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2294 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2295 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2296 !SYS_SUPPORTS_1024HZ
2301 default 100 if HZ_100
2302 default 128 if HZ_128
2303 default 250 if HZ_250
2304 default 256 if HZ_256
2305 default 1000 if HZ_1000
2306 default 1024 if HZ_1024
2308 source "kernel/Kconfig.preempt"
2311 bool "Kexec system call"
2313 kexec is a system call that implements the ability to shutdown your
2314 current kernel, and to start another kernel. It is like a reboot
2315 but it is independent of the system firmware. And like a reboot
2316 you can start any kernel with it, not just Linux.
2318 The name comes from the similarity to the exec system call.
2320 It is an ongoing process to be certain the hardware in a machine
2321 is properly shutdown, so do not be surprised if this code does not
2322 initially work for you. It may help to enable device hotplugging
2323 support. As of this writing the exact hardware interface is
2324 strongly in flux, so no good recommendation can be made.
2327 bool "Kernel crash dumps"
2329 Generate crash dump after being started by kexec.
2330 This should be normally only set in special crash dump kernels
2331 which are loaded in the main kernel with kexec-tools into
2332 a specially reserved region and then later executed after
2333 a crash by kdump/kexec. The crash dump kernel must be compiled
2334 to a memory address not used by the main kernel or firmware using
2337 config PHYSICAL_START
2338 hex "Physical address where the kernel is loaded"
2339 default "0xffffffff84000000" if 64BIT
2340 default "0x84000000" if 32BIT
2341 depends on CRASH_DUMP
2343 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2344 If you plan to use kernel for capturing the crash dump change
2345 this value to start of the reserved region (the "X" value as
2346 specified in the "crashkernel=YM@XM" command line boot parameter
2347 passed to the panic-ed kernel).
2350 bool "Enable seccomp to safely compute untrusted bytecode"
2354 This kernel feature is useful for number crunching applications
2355 that may need to compute untrusted bytecode during their
2356 execution. By using pipes or other transports made available to
2357 the process as file descriptors supporting the read/write
2358 syscalls, it's possible to isolate those applications in
2359 their own address space using seccomp. Once seccomp is
2360 enabled via /proc/<pid>/seccomp, it cannot be disabled
2361 and the task is only allowed to execute a few safe syscalls
2362 defined by each seccomp mode.
2364 If unsure, say Y. Only embedded should say N here.
2369 select OF_EARLY_FLATTREE
2374 config LOCKDEP_SUPPORT
2378 config STACKTRACE_SUPPORT
2382 source "init/Kconfig"
2384 source "kernel/Kconfig.freezer"
2386 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2394 bool "Support for PCI controller"
2395 depends on HW_HAS_PCI
2397 select GENERIC_PCI_IOMAP
2398 select NO_GENERIC_PCI_IOPORT_MAP
2400 Find out whether you have a PCI motherboard. PCI is the name of a
2401 bus system, i.e. the way the CPU talks to the other stuff inside
2402 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2408 source "drivers/pci/Kconfig"
2410 source "drivers/pci/pcie/Kconfig"
2413 # ISA support is now enabled via select. Too many systems still have the one
2414 # or other ISA chip on the board that users don't know about so don't expect
2415 # users to choose the right thing ...
2422 depends on HW_HAS_EISA
2424 select GENERIC_ISA_DMA
2426 The Extended Industry Standard Architecture (EISA) bus was
2427 developed as an open alternative to the IBM MicroChannel bus.
2429 The EISA bus provided some of the features of the IBM MicroChannel
2430 bus while maintaining backward compatibility with cards made for
2431 the older ISA bus. The EISA bus saw limited use between 1988 and
2432 1995 when it was made obsolete by the PCI bus.
2434 Say Y here if you are building a kernel for an EISA-based machine.
2438 source "drivers/eisa/Kconfig"
2441 bool "TURBOchannel support"
2442 depends on MACH_DECSTATION
2444 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2445 processors. TURBOchannel programming specifications are available
2447 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2449 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2450 Linux driver support status is documented at:
2451 <http://www.linux-mips.org/wiki/DECstation>
2461 select MIPS_EXTERNAL_TIMER
2466 source "drivers/pcmcia/Kconfig"
2468 source "drivers/pci/hotplug/Kconfig"
2471 bool "RapidIO support"
2475 If you say Y here, the kernel will include drivers and
2476 infrastructure code to support RapidIO interconnect devices.
2478 source "drivers/rapidio/Kconfig"
2482 menu "Executable file formats"
2484 source "fs/Kconfig.binfmt"
2489 config MIPS32_COMPAT
2490 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2493 Select this option if you want Linux/MIPS 32-bit binary
2494 compatibility. Since all software available for Linux/MIPS is
2495 currently 32-bit you should say Y here.
2499 depends on MIPS32_COMPAT
2500 select ARCH_WANT_OLD_COMPAT_IPC
2503 config SYSVIPC_COMPAT
2505 depends on COMPAT && SYSVIPC
2509 bool "Kernel support for o32 binaries"
2510 depends on MIPS32_COMPAT
2512 Select this option if you want to run o32 binaries. These are pure
2513 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2514 existing binaries are in this format.
2519 bool "Kernel support for n32 binaries"
2520 depends on MIPS32_COMPAT
2522 Select this option if you want to run n32 binaries. These are
2523 64-bit binaries using 32-bit quantities for addressing and certain
2524 data that would normally be 64-bit. They are used in special
2531 default y if MIPS32_O32 || MIPS32_N32
2535 menu "Power management options"
2537 config ARCH_HIBERNATION_POSSIBLE
2539 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2541 config ARCH_SUSPEND_POSSIBLE
2543 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2545 source "kernel/power/Kconfig"
2549 source "arch/mips/kernel/cpufreq/Kconfig"
2551 source "net/Kconfig"
2553 source "drivers/Kconfig"
2555 source "drivers/firmware/Kconfig"
2559 source "arch/mips/Kconfig.debug"
2561 source "security/Kconfig"
2563 source "crypto/Kconfig"
2565 source "lib/Kconfig"
2567 source "arch/mips/kvm/Kconfig"