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 GENERIC_PCI_IOMAP
31 select HAVE_ARCH_JUMP_LABEL
32 select ARCH_WANT_IPC_PARSE_VERSION
33 select IRQ_FORCED_THREADING
35 select HAVE_MEMBLOCK_NODE_MAP
36 select ARCH_DISCARD_MEMBLOCK
37 select GENERIC_SMP_IDLE_THREAD
38 select BUILDTIME_EXTABLE_SORT
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_CMOS_UPDATE
41 select HAVE_MOD_ARCH_SPECIFIC
43 select MODULES_USE_ELF_REL if MODULES
44 select MODULES_USE_ELF_RELA if MODULES && 64BIT
45 select CLONE_BACKWARDS
47 menu "Machine selection"
57 bool "Alchemy processor based machines"
58 select 64BIT_PHYS_ADDR
62 select SYS_HAS_CPU_MIPS32_R1
63 select SYS_SUPPORTS_32BIT_KERNEL
64 select SYS_SUPPORTS_APM_EMULATION
65 select ARCH_REQUIRE_GPIOLIB
66 select SYS_SUPPORTS_ZBOOT
67 select USB_ARCH_HAS_OHCI
68 select USB_ARCH_HAS_EHCI
71 bool "Texas Instruments AR7"
73 select DMA_NONCOHERENT
79 select SYS_HAS_CPU_MIPS32_R1
80 select SYS_HAS_EARLY_PRINTK
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_LITTLE_ENDIAN
83 select SYS_SUPPORTS_ZBOOT_UART16550
84 select ARCH_REQUIRE_GPIOLIB
88 Support for the Texas Instruments AR7 System-on-a-Chip
89 family: TNETD7100, 7200 and 7300.
92 bool "Atheros AR71XX/AR724X/AR913X based boards"
93 select ARCH_REQUIRE_GPIOLIB
97 select DMA_NONCOHERENT
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
228 select ARCH_REQUIRE_GPIOLIB
229 select SYS_HAS_EARLY_PRINTK
232 select GENERIC_IRQ_CHIP
235 bool "Lantiq based platforms"
236 select DMA_NONCOHERENT
240 select SYS_HAS_CPU_MIPS32_R1
241 select SYS_HAS_CPU_MIPS32_R2
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_MULTITHREADING
245 select SYS_HAS_EARLY_PRINTK
246 select ARCH_REQUIRE_GPIOLIB
249 select HAVE_MACH_CLKDEV
253 select PINCTRL_LANTIQ
256 bool "LASAT Networks platforms"
259 select DMA_NONCOHERENT
260 select SYS_HAS_EARLY_PRINTK
263 select PCI_GT64XXX_PCI0
265 select R5000_CPU_SCACHE
266 select SYS_HAS_CPU_R5000
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
269 select SYS_SUPPORTS_LITTLE_ENDIAN
272 bool "Loongson family of machines"
273 select SYS_SUPPORTS_ZBOOT
275 This enables the support of Loongson family of machines.
277 Loongson is a family of general-purpose MIPS-compatible CPUs.
278 developed at Institute of Computing Technology (ICT),
279 Chinese Academy of Sciences (CAS) in the People's Republic
280 of China. The chief architect is Professor Weiwu Hu.
282 config MACH_LOONGSON1
283 bool "Loongson 1 family of machines"
284 select SYS_SUPPORTS_ZBOOT
286 This enables support for the Loongson 1 based machines.
288 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
289 the ICT (Institute of Computing Technology) and the Chinese Academy
293 bool "MIPS Malta board"
294 select ARCH_MAY_HAVE_PC_FDC
300 select DMA_NONCOHERENT
301 select GENERIC_ISA_DMA
302 select HAVE_PCSPKR_PLATFORM
309 select MIPS_CPU_SCACHE
310 select PCI_GT64XXX_PCI0
313 select SYS_HAS_CPU_MIPS32_R1
314 select SYS_HAS_CPU_MIPS32_R2
315 select SYS_HAS_CPU_MIPS64_R1
316 select SYS_HAS_CPU_MIPS64_R2
317 select SYS_HAS_CPU_NEVADA
318 select SYS_HAS_CPU_RM7000
319 select SYS_HAS_EARLY_PRINTK
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_64BIT_KERNEL
322 select SYS_SUPPORTS_BIG_ENDIAN
323 select SYS_SUPPORTS_LITTLE_ENDIAN
324 select SYS_SUPPORTS_MIPS_CMP
325 select SYS_SUPPORTS_MULTITHREADING
326 select SYS_SUPPORTS_SMARTMIPS
327 select SYS_SUPPORTS_ZBOOT
329 This enables support for the MIPS Technologies Malta evaluation
333 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 SYS_SUPPORTS_MICROMIPS
356 select USB_ARCH_HAS_EHCI
357 select USB_EHCI_BIG_ENDIAN_DESC
358 select USB_EHCI_BIG_ENDIAN_MMIO
361 This enables support for the MIPS Technologies SEAD3 evaluation
365 bool "NEC EMMA2RH Mark-eins board"
369 This enables support for the NEC Electronics Mark-eins boards.
372 bool "NEC VR4100 series based machines"
375 select SYS_HAS_CPU_VR41XX
376 select ARCH_REQUIRE_GPIOLIB
379 bool "NXP STB220 board"
382 Support for NXP Semiconductors STB220 Development Board.
389 Support for NXP Semiconductors STB225 Development Board.
392 bool "PMC-Sierra MSP chipsets"
395 select DMA_NONCOHERENT
397 select NO_EXCEPT_FILL
399 select SYS_HAS_CPU_MIPS32_R1
400 select SYS_HAS_CPU_MIPS32_R2
401 select SYS_SUPPORTS_32BIT_KERNEL
402 select SYS_SUPPORTS_BIG_ENDIAN
405 select SERIAL_8250_CONSOLE
406 select USB_EHCI_BIG_ENDIAN_MMIO
407 select USB_EHCI_BIG_ENDIAN_DESC
409 This adds support for the PMC-Sierra family of Multi-Service
410 Processor System-On-A-Chips. These parts include a number
411 of integrated peripherals, interfaces and DSPs in addition to
412 a variety of MIPS cores.
418 select CPU_MIPSR2_IRQ_VI
419 select CPU_MIPSR2_IRQ_EI
421 select DMA_NONCOHERENT
423 select SYS_HAS_EARLY_PRINTK
424 select SYS_HAS_CPU_MIPS32_R2
425 select SYS_SUPPORTS_32BIT_KERNEL
426 select SYS_SUPPORTS_BIG_ENDIAN
427 select SYS_SUPPORTS_HIGHMEM
428 select USB_OHCI_LITTLE_ENDIAN
430 This enables support for the Cisco PowerTV Platform.
433 bool "Ralink based machines"
437 select DMA_NONCOHERENT
440 select SYS_HAS_CPU_MIPS32_R1
441 select SYS_HAS_CPU_MIPS32_R2
442 select SYS_SUPPORTS_32BIT_KERNEL
443 select SYS_SUPPORTS_LITTLE_ENDIAN
444 select SYS_HAS_EARLY_PRINTK
445 select HAVE_MACH_CLKDEV
449 bool "SGI IP22 (Indy/Indigo2)"
455 select DEFAULT_SGI_PARTITION
456 select DMA_NONCOHERENT
460 select IP22_CPU_SCACHE
462 select GENERIC_ISA_DMA_SUPPORT_BROKEN
464 select SGI_HAS_INDYDOG
470 select SYS_HAS_CPU_R4X00
471 select SYS_HAS_CPU_R5000
473 # Disable EARLY_PRINTK for now since it leads to overwritten prom
474 # memory during early boot on some machines.
476 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
477 # for a more details discussion
479 # select SYS_HAS_EARLY_PRINTK
480 select SYS_SUPPORTS_32BIT_KERNEL
481 select SYS_SUPPORTS_64BIT_KERNEL
482 select SYS_SUPPORTS_BIG_ENDIAN
484 This are the SGI Indy, Challenge S and Indigo2, as well as certain
485 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
486 that runs on these, say Y here.
489 bool "SGI IP27 (Origin200/2000)"
493 select DEFAULT_SGI_PARTITION
495 select SYS_HAS_EARLY_PRINTK
497 select NR_CPUS_DEFAULT_64
498 select SYS_HAS_CPU_R10000
499 select SYS_SUPPORTS_64BIT_KERNEL
500 select SYS_SUPPORTS_BIG_ENDIAN
501 select SYS_SUPPORTS_NUMA
502 select SYS_SUPPORTS_SMP
504 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
505 workstations. To compile a Linux kernel that runs on these, say Y
509 bool "SGI IP28 (Indigo2 R10k)"
515 select DEFAULT_SGI_PARTITION
516 select DMA_NONCOHERENT
517 select GENERIC_ISA_DMA_SUPPORT_BROKEN
523 select SGI_HAS_INDYDOG
529 select SYS_HAS_CPU_R10000
531 # Disable EARLY_PRINTK for now since it leads to overwritten prom
532 # memory during early boot on some machines.
534 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
535 # for a more details discussion
537 # select SYS_HAS_EARLY_PRINTK
538 select SYS_SUPPORTS_64BIT_KERNEL
539 select SYS_SUPPORTS_BIG_ENDIAN
541 This is the SGI Indigo2 with R10000 processor. To compile a Linux
542 kernel that runs on these, say Y here.
551 select DMA_NONCOHERENT
554 select R5000_CPU_SCACHE
555 select RM7000_CPU_SCACHE
556 select SYS_HAS_CPU_R5000
557 select SYS_HAS_CPU_R10000 if BROKEN
558 select SYS_HAS_CPU_RM7000
559 select SYS_HAS_CPU_NEVADA
560 select SYS_SUPPORTS_64BIT_KERNEL
561 select SYS_SUPPORTS_BIG_ENDIAN
563 If you want this kernel to run on SGI O2 workstation, say Y here.
566 bool "Sibyte BCM91120C-CRhine"
569 select SIBYTE_BCM1120
571 select SYS_HAS_CPU_SB1
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_LITTLE_ENDIAN
576 bool "Sibyte BCM91120x-Carmel"
579 select SIBYTE_BCM1120
581 select SYS_HAS_CPU_SB1
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_LITTLE_ENDIAN
586 bool "Sibyte BCM91125C-CRhone"
589 select SIBYTE_BCM1125
591 select SYS_HAS_CPU_SB1
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_HIGHMEM
594 select SYS_SUPPORTS_LITTLE_ENDIAN
597 bool "Sibyte BCM91125E-Rhone"
600 select SIBYTE_BCM1125H
602 select SYS_HAS_CPU_SB1
603 select SYS_SUPPORTS_BIG_ENDIAN
604 select SYS_SUPPORTS_LITTLE_ENDIAN
607 bool "Sibyte BCM91250A-SWARM"
610 select HAVE_PATA_PLATFORM
611 select NR_CPUS_DEFAULT_2
614 select SYS_HAS_CPU_SB1
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select SYS_SUPPORTS_HIGHMEM
617 select SYS_SUPPORTS_LITTLE_ENDIAN
618 select ZONE_DMA32 if 64BIT
620 config SIBYTE_LITTLESUR
621 bool "Sibyte BCM91250C2-LittleSur"
624 select HAVE_PATA_PLATFORM
625 select NR_CPUS_DEFAULT_2
628 select SYS_HAS_CPU_SB1
629 select SYS_SUPPORTS_BIG_ENDIAN
630 select SYS_SUPPORTS_HIGHMEM
631 select SYS_SUPPORTS_LITTLE_ENDIAN
633 config SIBYTE_SENTOSA
634 bool "Sibyte BCM91250E-Sentosa"
637 select NR_CPUS_DEFAULT_2
640 select SYS_HAS_CPU_SB1
641 select SYS_SUPPORTS_BIG_ENDIAN
642 select SYS_SUPPORTS_LITTLE_ENDIAN
645 bool "Sibyte BCM91480B-BigSur"
648 select NR_CPUS_DEFAULT_4
649 select SIBYTE_BCM1x80
651 select SYS_HAS_CPU_SB1
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_HIGHMEM
654 select SYS_SUPPORTS_LITTLE_ENDIAN
655 select ZONE_DMA32 if 64BIT
658 bool "SNI RM200/300/400"
659 select FW_ARC if CPU_LITTLE_ENDIAN
660 select FW_ARC32 if CPU_LITTLE_ENDIAN
661 select FW_SNIPROM if CPU_BIG_ENDIAN
662 select ARCH_MAY_HAVE_PC_FDC
666 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
667 select DMA_NONCOHERENT
668 select GENERIC_ISA_DMA
669 select HAVE_PCSPKR_PLATFORM
676 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
677 select SYS_HAS_CPU_R4X00
678 select SYS_HAS_CPU_R5000
679 select SYS_HAS_CPU_R10000
680 select R5000_CPU_SCACHE
681 select SYS_HAS_EARLY_PRINTK
682 select SYS_SUPPORTS_32BIT_KERNEL
683 select SYS_SUPPORTS_64BIT_KERNEL
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_HIGHMEM
686 select SYS_SUPPORTS_LITTLE_ENDIAN
688 The SNI RM200/300/400 are MIPS-based machines manufactured by
689 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
690 Technology and now in turn merged with Fujitsu. Say Y here to
691 support this machine type.
694 bool "Toshiba TX39 series based machines"
697 bool "Toshiba TX49 series based machines"
699 config MIKROTIK_RB532
700 bool "Mikrotik RB532 boards"
703 select DMA_NONCOHERENT
706 select SYS_HAS_CPU_MIPS32_R1
707 select SYS_SUPPORTS_32BIT_KERNEL
708 select SYS_SUPPORTS_LITTLE_ENDIAN
711 select ARCH_REQUIRE_GPIOLIB
713 Support the Mikrotik(tm) RouterBoard 532 series,
714 based on the IDT RC32434 SoC.
717 bool "Wind River PPMC board"
722 select DMA_NONCOHERENT
724 select PCI_GT64XXX_PCI0
726 select SYS_HAS_CPU_MIPS32_R1
727 select SYS_HAS_CPU_MIPS32_R2
728 select SYS_HAS_CPU_MIPS64_R1
729 select SYS_HAS_CPU_NEVADA
730 select SYS_HAS_CPU_RM7000
731 select SYS_SUPPORTS_32BIT_KERNEL
732 select SYS_SUPPORTS_64BIT_KERNEL
733 select SYS_SUPPORTS_BIG_ENDIAN
734 select SYS_SUPPORTS_LITTLE_ENDIAN
736 This enables support for the Wind River MIPS32 4KC PPMC evaluation
737 board, which is based on GT64120 bridge chip.
739 config CAVIUM_OCTEON_SIMULATOR
740 bool "Cavium Networks Octeon Simulator"
742 select 64BIT_PHYS_ADDR
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select SYS_SUPPORTS_BIG_ENDIAN
746 select SYS_SUPPORTS_HOTPLUG_CPU
747 select SYS_HAS_CPU_CAVIUM_OCTEON
750 The Octeon simulator is software performance model of the Cavium
751 Octeon Processor. It supports simulating Octeon processors on x86
754 config CAVIUM_OCTEON_REFERENCE_BOARD
755 bool "Cavium Networks Octeon reference board"
757 select 64BIT_PHYS_ADDR
759 select SYS_SUPPORTS_64BIT_KERNEL
760 select SYS_SUPPORTS_BIG_ENDIAN
762 select SYS_SUPPORTS_HOTPLUG_CPU
763 select SYS_HAS_EARLY_PRINTK
764 select SYS_HAS_CPU_CAVIUM_OCTEON
767 select ARCH_SUPPORTS_MSI
769 select USB_ARCH_HAS_OHCI
770 select USB_ARCH_HAS_EHCI
773 This option supports all of the Octeon reference boards from Cavium
774 Networks. It builds a kernel that dynamically determines the Octeon
775 CPU type and supports all known board reference implementations.
776 Some of the supported boards are:
783 Say Y here for most Octeon reference boards.
786 bool "Netlogic XLR/XLS based systems"
789 select SYS_HAS_CPU_XLR
790 select SYS_SUPPORTS_SMP
793 select SYS_SUPPORTS_32BIT_KERNEL
794 select SYS_SUPPORTS_64BIT_KERNEL
795 select 64BIT_PHYS_ADDR
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
799 select NR_CPUS_DEFAULT_32
803 select ARCH_SUPPORTS_MSI
804 select ZONE_DMA32 if 64BIT
806 select SYS_HAS_EARLY_PRINTK
807 select USB_ARCH_HAS_OHCI if USB_SUPPORT
808 select USB_ARCH_HAS_EHCI if USB_SUPPORT
810 Support for systems based on Netlogic XLR and XLS processors.
811 Say Y here if you have a XLR or XLS based board.
814 bool "Netlogic XLP based systems"
817 select SYS_HAS_CPU_XLP
818 select SYS_SUPPORTS_SMP
820 select SYS_SUPPORTS_32BIT_KERNEL
821 select SYS_SUPPORTS_64BIT_KERNEL
822 select 64BIT_PHYS_ADDR
823 select SYS_SUPPORTS_BIG_ENDIAN
824 select SYS_SUPPORTS_LITTLE_ENDIAN
825 select SYS_SUPPORTS_HIGHMEM
827 select NR_CPUS_DEFAULT_32
831 select ZONE_DMA32 if 64BIT
833 select SYS_HAS_EARLY_PRINTK
836 This board is based on Netlogic XLP Processor.
837 Say Y here if you have a XLP based board.
841 source "arch/mips/alchemy/Kconfig"
842 source "arch/mips/ath79/Kconfig"
843 source "arch/mips/bcm47xx/Kconfig"
844 source "arch/mips/bcm63xx/Kconfig"
845 source "arch/mips/jazz/Kconfig"
846 source "arch/mips/jz4740/Kconfig"
847 source "arch/mips/lantiq/Kconfig"
848 source "arch/mips/lasat/Kconfig"
849 source "arch/mips/pmcs-msp71xx/Kconfig"
850 source "arch/mips/powertv/Kconfig"
851 source "arch/mips/ralink/Kconfig"
852 source "arch/mips/sgi-ip27/Kconfig"
853 source "arch/mips/sibyte/Kconfig"
854 source "arch/mips/txx9/Kconfig"
855 source "arch/mips/vr41xx/Kconfig"
856 source "arch/mips/cavium-octeon/Kconfig"
857 source "arch/mips/loongson/Kconfig"
858 source "arch/mips/loongson1/Kconfig"
859 source "arch/mips/netlogic/Kconfig"
863 config RWSEM_GENERIC_SPINLOCK
867 config RWSEM_XCHGADD_ALGORITHM
870 config ARCH_HAS_ILOG2_U32
874 config ARCH_HAS_ILOG2_U64
878 config GENERIC_HWEIGHT
882 config GENERIC_CALIBRATE_DELAY
886 config SCHED_OMIT_FRAME_POINTER
891 # Select some configuration options automatically based on user selections.
896 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
1010 config HOLES_IN_ZONE
1014 # Endianness selection. Sufficiently obscure so many users don't know what to
1015 # answer,so we try hard to limit the available choices. Also the use of a
1016 # choice statement should be more obvious to the user.
1019 prompt "Endianness selection"
1021 Some MIPS machines can be configured for either little or big endian
1022 byte order. These modes require different kernels and a different
1023 Linux distribution. In general there is one preferred byteorder for a
1024 particular system but some systems are just as commonly used in the
1025 one or the other endianness.
1027 config CPU_BIG_ENDIAN
1029 depends on SYS_SUPPORTS_BIG_ENDIAN
1031 config CPU_LITTLE_ENDIAN
1032 bool "Little endian"
1033 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1041 config SYS_SUPPORTS_APM_EMULATION
1044 config SYS_SUPPORTS_BIG_ENDIAN
1047 config SYS_SUPPORTS_LITTLE_ENDIAN
1050 config SYS_SUPPORTS_HUGETLBFS
1052 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1055 config MIPS_HUGE_TLB_SUPPORT
1056 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1079 config PCI_GT64XXX_PCI0
1082 config NO_EXCEPT_FILL
1089 select DMA_NONCOHERENT
1091 select SWAP_IO_SPACE
1092 select SYS_HAS_CPU_R5500
1093 select SYS_SUPPORTS_32BIT_KERNEL
1094 select SYS_SUPPORTS_64BIT_KERNEL
1095 select SYS_SUPPORTS_BIG_ENDIAN
1102 select DMA_NONCOHERENT
1103 select SYS_HAS_CPU_MIPS32_R2
1104 select SYS_SUPPORTS_32BIT_KERNEL
1105 select SYS_SUPPORTS_LITTLE_ENDIAN
1106 select SYS_SUPPORTS_BIG_ENDIAN
1107 select CPU_MIPSR2_IRQ_VI
1113 config SWAP_IO_SPACE
1116 config SGI_HAS_INDYDOG
1128 config SGI_HAS_ZILOG
1131 config SGI_HAS_I8042
1134 config DEFAULT_SGI_PARTITION
1146 config MIPS_L1_CACHE_SHIFT
1148 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1149 default "6" if MIPS_CPU_SCACHE
1150 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1153 config HAVE_STD_PC_SERIAL_PORT
1157 bool "ARC console support"
1158 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1162 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1167 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1176 menu "CPU selection"
1182 config CPU_LOONGSON2E
1184 depends on SYS_HAS_CPU_LOONGSON2E
1185 select CPU_LOONGSON2
1187 The Loongson 2E processor implements the MIPS III instruction set
1188 with many extensions.
1190 It has an internal FPGA northbridge, which is compatible to
1193 config CPU_LOONGSON2F
1195 depends on SYS_HAS_CPU_LOONGSON2F
1196 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
1429 select USB_EHCI_BIG_ENDIAN_MMIO
1431 The Cavium Octeon processor is a highly integrated chip containing
1432 many ethernet hardware widgets for networking tasks. The processor
1433 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1434 Full details can be found at http://www.caviumnetworks.com.
1436 config CPU_BMIPS3300
1438 depends on SYS_HAS_CPU_BMIPS3300
1441 Broadcom BMIPS3300 processors.
1443 config CPU_BMIPS4350
1445 depends on SYS_HAS_CPU_BMIPS4350
1447 select SYS_SUPPORTS_SMP
1448 select SYS_SUPPORTS_HOTPLUG_CPU
1450 Broadcom BMIPS4350 ("VIPER") processors.
1452 config CPU_BMIPS4380
1454 depends on SYS_HAS_CPU_BMIPS4380
1456 select SYS_SUPPORTS_SMP
1457 select SYS_SUPPORTS_HOTPLUG_CPU
1459 Broadcom BMIPS4380 processors.
1461 config CPU_BMIPS5000
1463 depends on SYS_HAS_CPU_BMIPS5000
1465 select CPU_SUPPORTS_HIGHMEM
1466 select MIPS_CPU_SCACHE
1467 select SYS_SUPPORTS_SMP
1468 select SYS_SUPPORTS_HOTPLUG_CPU
1470 Broadcom BMIPS5000 processors.
1473 bool "Netlogic XLR SoC"
1474 depends on SYS_HAS_CPU_XLR
1475 select CPU_SUPPORTS_32BIT_KERNEL
1476 select CPU_SUPPORTS_64BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_HUGEPAGES
1479 select WEAK_ORDERING
1480 select WEAK_REORDERING_BEYOND_LLSC
1482 Netlogic Microsystems XLR/XLS processors.
1485 bool "Netlogic XLP SoC"
1486 depends on SYS_HAS_CPU_XLP
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_64BIT_KERNEL
1489 select CPU_SUPPORTS_HIGHMEM
1490 select WEAK_ORDERING
1491 select WEAK_REORDERING_BEYOND_LLSC
1492 select CPU_HAS_PREFETCH
1495 Netlogic Microsystems XLP processors.
1499 config CPU_NOP_WORKAROUNDS
1502 config CPU_JUMP_WORKAROUNDS
1505 config CPU_LOONGSON2F_WORKAROUNDS
1506 bool "Loongson 2F Workarounds"
1508 select CPU_NOP_WORKAROUNDS
1509 select CPU_JUMP_WORKAROUNDS
1511 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1512 require workarounds. Without workarounds the system may hang
1513 unexpectedly. For more information please refer to the gas
1514 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1516 Loongson 2F03 and later have fixed these issues and no workarounds
1517 are needed. The workarounds have no significant side effect on them
1518 but may decrease the performance of the system so this option should
1519 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1522 If unsure, please say Y.
1523 endif # CPU_LOONGSON2F
1525 config SYS_SUPPORTS_ZBOOT
1527 select HAVE_KERNEL_GZIP
1528 select HAVE_KERNEL_BZIP2
1529 select HAVE_KERNEL_LZMA
1530 select HAVE_KERNEL_LZO
1532 config SYS_SUPPORTS_ZBOOT_UART16550
1534 select SYS_SUPPORTS_ZBOOT
1536 config CPU_LOONGSON2
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1540 select CPU_SUPPORTS_HIGHMEM
1541 select CPU_SUPPORTS_HUGEPAGES
1543 config CPU_LOONGSON1
1547 select CPU_HAS_PREFETCH
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_HIGHMEM
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select DMA_NONCOHERENT
1557 select SWAP_IO_SPACE
1558 select WEAK_ORDERING
1560 config SYS_HAS_CPU_LOONGSON2E
1563 config SYS_HAS_CPU_LOONGSON2F
1565 select CPU_SUPPORTS_CPUFREQ
1566 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1567 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1569 config SYS_HAS_CPU_LOONGSON1B
1572 config SYS_HAS_CPU_MIPS32_R1
1575 config SYS_HAS_CPU_MIPS32_R2
1578 config SYS_HAS_CPU_MIPS64_R1
1581 config SYS_HAS_CPU_MIPS64_R2
1584 config SYS_HAS_CPU_R3000
1587 config SYS_HAS_CPU_TX39XX
1590 config SYS_HAS_CPU_VR41XX
1593 config SYS_HAS_CPU_R4300
1596 config SYS_HAS_CPU_R4X00
1599 config SYS_HAS_CPU_TX49XX
1602 config SYS_HAS_CPU_R5000
1605 config SYS_HAS_CPU_R5432
1608 config SYS_HAS_CPU_R5500
1611 config SYS_HAS_CPU_R6000
1614 config SYS_HAS_CPU_NEVADA
1617 config SYS_HAS_CPU_R8000
1620 config SYS_HAS_CPU_R10000
1623 config SYS_HAS_CPU_RM7000
1626 config SYS_HAS_CPU_SB1
1629 config SYS_HAS_CPU_CAVIUM_OCTEON
1632 config SYS_HAS_CPU_BMIPS3300
1635 config SYS_HAS_CPU_BMIPS4350
1638 config SYS_HAS_CPU_BMIPS4380
1641 config SYS_HAS_CPU_BMIPS5000
1644 config SYS_HAS_CPU_XLR
1647 config SYS_HAS_CPU_XLP
1651 # CPU may reorder R->R, R->W, W->R, W->W
1652 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1654 config WEAK_ORDERING
1658 # CPU may reorder reads and writes beyond LL/SC
1659 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1661 config WEAK_REORDERING_BEYOND_LLSC
1666 # These two indicate any level of the MIPS32 and MIPS64 architecture
1670 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1674 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1677 # These two indicate the revision of the architecture, either Release 1 or Release 2
1681 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1685 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1687 config SYS_SUPPORTS_32BIT_KERNEL
1689 config SYS_SUPPORTS_64BIT_KERNEL
1691 config CPU_SUPPORTS_32BIT_KERNEL
1693 config CPU_SUPPORTS_64BIT_KERNEL
1695 config CPU_SUPPORTS_CPUFREQ
1697 config CPU_SUPPORTS_ADDRWINCFG
1699 config CPU_SUPPORTS_HUGEPAGES
1701 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1703 config MIPS_PGD_C0_CONTEXT
1705 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1708 # Set to y for ptrace access to watch registers.
1710 config HARDWARE_WATCHPOINTS
1712 default y if CPU_MIPSR1 || CPU_MIPSR2
1717 prompt "Kernel code model"
1719 You should only select this option if you have a workload that
1720 actually benefits from 64-bit processing or if your machine has
1721 large memory. You will only be presented a single option in this
1722 menu if your system does not support both 32-bit and 64-bit kernels.
1725 bool "32-bit kernel"
1726 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1729 Select this option if you want to build a 32-bit kernel.
1731 bool "64-bit kernel"
1732 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
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.
1828 bool "Use GIC global counter for clock events"
1829 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1831 Use the GIC global counter for the clock events. The R4K clock
1832 event driver is always present, so if the platform ends up not
1833 detecting a GIC, it will fall back to the R4K timer for the
1834 generation of clock events.
1839 config IP22_CPU_SCACHE
1844 # Support for a MIPS32 / MIPS64 style S-caches
1846 config MIPS_CPU_SCACHE
1850 config R5000_CPU_SCACHE
1854 config RM7000_CPU_SCACHE
1858 config SIBYTE_DMA_PAGEOPS
1859 bool "Use DMA to clear/copy pages"
1862 Instead of using the CPU to zero and copy pages, use a Data Mover
1863 channel. These DMA channels are otherwise unused by the standard
1864 SiByte Linux port. Seems to give a small performance benefit.
1866 config CPU_HAS_PREFETCH
1869 config CPU_GENERIC_DUMP_TLB
1871 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1875 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1877 config CPU_R4K_CACHE_TLB
1879 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1882 prompt "MIPS MT options"
1884 config MIPS_MT_DISABLED
1885 bool "Disable multithreading support."
1887 Use this option if your workload can't take advantage of
1888 MIPS hardware multithreading support. On systems that don't have
1889 the option of an MT-enabled processor this option will be the only
1890 option in this menu.
1893 bool "Use 1 TC on each available VPE for SMP"
1894 depends on SYS_SUPPORTS_MULTITHREADING
1895 select CPU_MIPSR2_IRQ_VI
1896 select CPU_MIPSR2_IRQ_EI
1898 select NR_CPUS_DEFAULT_2
1900 select SYS_SUPPORTS_SCHED_SMT if SMP
1901 select SYS_SUPPORTS_SMP
1903 select MIPS_PERF_SHARED_TC_COUNTERS
1905 This is a kernel model which is known a VSMP but lately has been
1906 marketesed into SMVP.
1907 Virtual SMP uses the processor's VPEs to implement virtual
1908 processors. In currently available configuration of the 34K processor
1909 this allows for a dual processor. Both processors will share the same
1910 primary caches; each will obtain the half of the TLB for it's own
1911 exclusive use. For a layman this model can be described as similar to
1912 what Intel calls Hyperthreading.
1914 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1917 bool "SMTC: Use all TCs on all VPEs for SMP"
1918 depends on CPU_MIPS32_R2
1919 #depends on CPU_MIPS64_R2 # once there is hardware ...
1920 depends on SYS_SUPPORTS_MULTITHREADING
1921 select CPU_MIPSR2_IRQ_VI
1922 select CPU_MIPSR2_IRQ_EI
1924 select NR_CPUS_DEFAULT_8
1926 select SYS_SUPPORTS_SMP
1929 This is a kernel model which is known a SMTC or lately has been
1930 marketesed into SMVP.
1931 is presenting the available TC's of the core as processors to Linux.
1932 On currently available 34K processors this means a Linux system will
1933 see up to 5 processors. The implementation of the SMTC kernel differs
1934 significantly from VSMP and cannot efficiently coexist in the same
1935 kernel binary so the choice between VSMP and SMTC is a compile time
1938 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1946 bool "SMT (multithreading) scheduler support"
1947 depends on SYS_SUPPORTS_SCHED_SMT
1950 SMT scheduler support improves the CPU scheduler's decision making
1951 when dealing with MIPS MT enabled cores at a cost of slightly
1952 increased overhead in some places. If unsure say N here.
1954 config SYS_SUPPORTS_SCHED_SMT
1957 config SYS_SUPPORTS_MULTITHREADING
1960 config MIPS_MT_FPAFF
1961 bool "Dynamic FPU affinity for FP-intensive threads"
1963 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1965 config MIPS_VPE_LOADER
1966 bool "VPE loader support."
1967 depends on SYS_SUPPORTS_MULTITHREADING
1968 select CPU_MIPSR2_IRQ_VI
1969 select CPU_MIPSR2_IRQ_EI
1972 Includes a loader for loading an elf relocatable object
1973 onto another VPE and running it.
1975 config MIPS_MT_SMTC_IM_BACKSTOP
1976 bool "Use per-TC register bits as backstop for inhibited IM bits"
1977 depends on MIPS_MT_SMTC
1980 To support multiple TC microthreads acting as "CPUs" within
1981 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1982 during interrupt handling. To support legacy drivers and interrupt
1983 controller management code, SMTC has a "backstop" to track and
1984 if necessary restore the interrupt mask. This has some performance
1985 impact on interrupt service overhead.
1987 config MIPS_MT_SMTC_IRQAFF
1988 bool "Support IRQ affinity API"
1989 depends on MIPS_MT_SMTC
1992 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1993 for SMTC Linux kernel. Requires platform support, of which
1994 an example can be found in the MIPS kernel i8259 and Malta
1995 platform code. Adds some overhead to interrupt dispatch, and
1996 should be used only if you know what you are doing.
1998 config MIPS_VPE_LOADER_TOM
1999 bool "Load VPE program into memory hidden from linux"
2000 depends on MIPS_VPE_LOADER
2003 The loader can use memory that is present but has been hidden from
2004 Linux using the kernel command line option "mem=xxMB". It's up to
2005 you to ensure the amount you put in the option and the space your
2006 program requires is less or equal to the amount physically present.
2008 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2009 config MIPS_VPE_APSP_API
2010 bool "Enable support for AP/SP API (RTLX)"
2011 depends on MIPS_VPE_LOADER
2015 bool "MIPS CMP framework support"
2016 depends on SYS_SUPPORTS_MIPS_CMP
2018 select SYS_SUPPORTS_SMP
2019 select SYS_SUPPORTS_SCHED_SMT if SMP
2020 select WEAK_ORDERING
2023 This is a placeholder option for the GCMP work. It will need to
2024 be handled differently...
2026 config SB1_PASS_1_WORKAROUNDS
2028 depends on CPU_SB1_PASS_1
2031 config SB1_PASS_2_WORKAROUNDS
2033 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2036 config SB1_PASS_2_1_WORKAROUNDS
2038 depends on CPU_SB1 && CPU_SB1_PASS_2
2042 config 64BIT_PHYS_ADDR
2045 config ARCH_PHYS_ADDR_T_64BIT
2046 def_bool 64BIT_PHYS_ADDR
2048 config CPU_HAS_SMARTMIPS
2049 depends on SYS_SUPPORTS_SMARTMIPS
2050 bool "Support for the SmartMIPS ASE"
2052 SmartMIPS is a extension of the MIPS32 architecture aimed at
2053 increased security at both hardware and software level for
2054 smartcards. Enabling this option will allow proper use of the
2055 SmartMIPS instructions by Linux applications. However a kernel with
2056 this option will not work on a MIPS core without SmartMIPS core. If
2057 you don't know you probably don't have SmartMIPS and should say N
2060 config CPU_MICROMIPS
2061 depends on SYS_SUPPORTS_MICROMIPS
2062 bool "Build kernel using microMIPS ISA"
2064 When this option is enabled the kernel will be built using the
2074 # Vectored interrupt mode is an R2 feature
2076 config CPU_MIPSR2_IRQ_VI
2080 # Extended interrupt mode is an R2 feature
2082 config CPU_MIPSR2_IRQ_EI
2087 depends on !CPU_R3000
2093 config CPU_DADDI_WORKAROUNDS
2096 config CPU_R4000_WORKAROUNDS
2098 select CPU_R4400_WORKAROUNDS
2100 config CPU_R4400_WORKAROUNDS
2104 # - Highmem only makes sense for the 32-bit kernel.
2105 # - The current highmem code will only work properly on physically indexed
2106 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2107 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2108 # moment we protect the user and offer the highmem option only on machines
2109 # where it's known to be safe. This will not offer highmem on a few systems
2110 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2111 # indexed CPUs but we're playing safe.
2112 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2113 # know they might have memory configurations that could make use of highmem
2117 bool "High Memory Support"
2118 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2120 config CPU_SUPPORTS_HIGHMEM
2123 config SYS_SUPPORTS_HIGHMEM
2126 config SYS_SUPPORTS_SMARTMIPS
2129 config SYS_SUPPORTS_MICROMIPS
2132 config ARCH_FLATMEM_ENABLE
2134 depends on !NUMA && !CPU_LOONGSON2
2136 config ARCH_DISCONTIGMEM_ENABLE
2138 default y if SGI_IP27
2140 Say Y to support efficient handling of discontiguous physical memory,
2141 for architectures which are either NUMA (Non-Uniform Memory Access)
2142 or have huge holes in the physical address space for other reasons.
2143 See <file:Documentation/vm/numa> for more.
2145 config ARCH_SPARSEMEM_ENABLE
2147 select SPARSEMEM_STATIC
2151 depends on SYS_SUPPORTS_NUMA
2153 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2154 Access). This option improves performance on systems with more
2155 than two nodes; on two node systems it is generally better to
2156 leave it disabled; on single node systems disable this option
2159 config SYS_SUPPORTS_NUMA
2165 depends on NEED_MULTIPLE_NODES
2167 config HW_PERF_EVENTS
2168 bool "Enable hardware performance counter support for perf events"
2169 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2172 Enable hardware performance counter support for perf events. If
2173 disabled, perf events will use software events only.
2178 bool "Multi-Processing support"
2179 depends on SYS_SUPPORTS_SMP
2180 select USE_GENERIC_SMP_HELPERS
2182 This enables support for systems with more than one CPU. If you have
2183 a system with only one CPU, like most personal computers, say N. If
2184 you have a system with more than one CPU, say Y.
2186 If you say N here, the kernel will run on single and multiprocessor
2187 machines, but will use only one CPU of a multiprocessor machine. If
2188 you say Y here, the kernel will run on many, but not all,
2189 singleprocessor machines. On a singleprocessor machine, the kernel
2190 will run faster if you say N here.
2192 People using multiprocessor machines who say Y here should also say
2193 Y to "Enhanced Real Time Clock Support", below.
2195 See also the SMP-HOWTO available at
2196 <http://www.tldp.org/docs.html#howto>.
2198 If you don't know what to do here, say N.
2203 config SYS_SUPPORTS_MIPS_CMP
2206 config SYS_SUPPORTS_SMP
2209 config NR_CPUS_DEFAULT_1
2212 config NR_CPUS_DEFAULT_2
2215 config NR_CPUS_DEFAULT_4
2218 config NR_CPUS_DEFAULT_8
2221 config NR_CPUS_DEFAULT_16
2224 config NR_CPUS_DEFAULT_32
2227 config NR_CPUS_DEFAULT_64
2231 int "Maximum number of CPUs (2-64)"
2232 range 1 64 if NR_CPUS_DEFAULT_1
2234 default "1" if NR_CPUS_DEFAULT_1
2235 default "2" if NR_CPUS_DEFAULT_2
2236 default "4" if NR_CPUS_DEFAULT_4
2237 default "8" if NR_CPUS_DEFAULT_8
2238 default "16" if NR_CPUS_DEFAULT_16
2239 default "32" if NR_CPUS_DEFAULT_32
2240 default "64" if NR_CPUS_DEFAULT_64
2242 This allows you to specify the maximum number of CPUs which this
2243 kernel will support. The maximum supported value is 32 for 32-bit
2244 kernel and 64 for 64-bit kernels; the minimum value which makes
2245 sense is 1 for Qemu (useful only for kernel debugging purposes)
2246 and 2 for all others.
2248 This is purely to save memory - each supported CPU adds
2249 approximately eight kilobytes to the kernel image. For best
2250 performance should round up your number of processors to the next
2253 config MIPS_PERF_SHARED_TC_COUNTERS
2257 # Timer Interrupt Frequency Configuration
2261 prompt "Timer frequency"
2264 Allows the configuration of the timer frequency.
2267 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2270 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2273 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2276 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2279 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2282 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2285 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2289 config SYS_SUPPORTS_48HZ
2292 config SYS_SUPPORTS_100HZ
2295 config SYS_SUPPORTS_128HZ
2298 config SYS_SUPPORTS_250HZ
2301 config SYS_SUPPORTS_256HZ
2304 config SYS_SUPPORTS_1000HZ
2307 config SYS_SUPPORTS_1024HZ
2310 config SYS_SUPPORTS_ARBIT_HZ
2312 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2313 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2314 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2315 !SYS_SUPPORTS_1024HZ
2320 default 100 if HZ_100
2321 default 128 if HZ_128
2322 default 250 if HZ_250
2323 default 256 if HZ_256
2324 default 1000 if HZ_1000
2325 default 1024 if HZ_1024
2327 source "kernel/Kconfig.preempt"
2330 bool "Kexec system call"
2332 kexec is a system call that implements the ability to shutdown your
2333 current kernel, and to start another kernel. It is like a reboot
2334 but it is independent of the system firmware. And like a reboot
2335 you can start any kernel with it, not just Linux.
2337 The name comes from the similarity to the exec system call.
2339 It is an ongoing process to be certain the hardware in a machine
2340 is properly shutdown, so do not be surprised if this code does not
2341 initially work for you. It may help to enable device hotplugging
2342 support. As of this writing the exact hardware interface is
2343 strongly in flux, so no good recommendation can be made.
2346 bool "Kernel crash dumps"
2348 Generate crash dump after being started by kexec.
2349 This should be normally only set in special crash dump kernels
2350 which are loaded in the main kernel with kexec-tools into
2351 a specially reserved region and then later executed after
2352 a crash by kdump/kexec. The crash dump kernel must be compiled
2353 to a memory address not used by the main kernel or firmware using
2356 config PHYSICAL_START
2357 hex "Physical address where the kernel is loaded"
2358 default "0xffffffff84000000" if 64BIT
2359 default "0x84000000" if 32BIT
2360 depends on CRASH_DUMP
2362 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2363 If you plan to use kernel for capturing the crash dump change
2364 this value to start of the reserved region (the "X" value as
2365 specified in the "crashkernel=YM@XM" command line boot parameter
2366 passed to the panic-ed kernel).
2369 bool "Enable seccomp to safely compute untrusted bytecode"
2373 This kernel feature is useful for number crunching applications
2374 that may need to compute untrusted bytecode during their
2375 execution. By using pipes or other transports made available to
2376 the process as file descriptors supporting the read/write
2377 syscalls, it's possible to isolate those applications in
2378 their own address space using seccomp. Once seccomp is
2379 enabled via /proc/<pid>/seccomp, it cannot be disabled
2380 and the task is only allowed to execute a few safe syscalls
2381 defined by each seccomp mode.
2383 If unsure, say Y. Only embedded should say N here.
2388 select OF_EARLY_FLATTREE
2393 config LOCKDEP_SUPPORT
2397 config STACKTRACE_SUPPORT
2401 source "init/Kconfig"
2403 source "kernel/Kconfig.freezer"
2405 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2413 bool "Support for PCI controller"
2414 depends on HW_HAS_PCI
2416 select NO_GENERIC_PCI_IOPORT_MAP
2418 Find out whether you have a PCI motherboard. PCI is the name of a
2419 bus system, i.e. the way the CPU talks to the other stuff inside
2420 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2426 source "drivers/pci/Kconfig"
2428 source "drivers/pci/pcie/Kconfig"
2431 # ISA support is now enabled via select. Too many systems still have the one
2432 # or other ISA chip on the board that users don't know about so don't expect
2433 # users to choose the right thing ...
2440 depends on HW_HAS_EISA
2442 select GENERIC_ISA_DMA
2444 The Extended Industry Standard Architecture (EISA) bus was
2445 developed as an open alternative to the IBM MicroChannel bus.
2447 The EISA bus provided some of the features of the IBM MicroChannel
2448 bus while maintaining backward compatibility with cards made for
2449 the older ISA bus. The EISA bus saw limited use between 1988 and
2450 1995 when it was made obsolete by the PCI bus.
2452 Say Y here if you are building a kernel for an EISA-based machine.
2456 source "drivers/eisa/Kconfig"
2459 bool "TURBOchannel support"
2460 depends on MACH_DECSTATION
2462 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2463 processors. TURBOchannel programming specifications are available
2465 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2467 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2468 Linux driver support status is documented at:
2469 <http://www.linux-mips.org/wiki/DECstation>
2479 select MIPS_EXTERNAL_TIMER
2484 source "drivers/pcmcia/Kconfig"
2486 source "drivers/pci/hotplug/Kconfig"
2489 bool "RapidIO support"
2493 If you say Y here, the kernel will include drivers and
2494 infrastructure code to support RapidIO interconnect devices.
2496 source "drivers/rapidio/Kconfig"
2500 menu "Executable file formats"
2502 source "fs/Kconfig.binfmt"
2507 config MIPS32_COMPAT
2508 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2511 Select this option if you want Linux/MIPS 32-bit binary
2512 compatibility. Since all software available for Linux/MIPS is
2513 currently 32-bit you should say Y here.
2517 depends on MIPS32_COMPAT
2518 select ARCH_WANT_OLD_COMPAT_IPC
2521 config SYSVIPC_COMPAT
2523 depends on COMPAT && SYSVIPC
2527 bool "Kernel support for o32 binaries"
2528 depends on MIPS32_COMPAT
2530 Select this option if you want to run o32 binaries. These are pure
2531 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2532 existing binaries are in this format.
2537 bool "Kernel support for n32 binaries"
2538 depends on MIPS32_COMPAT
2540 Select this option if you want to run n32 binaries. These are
2541 64-bit binaries using 32-bit quantities for addressing and certain
2542 data that would normally be 64-bit. They are used in special
2549 default y if MIPS32_O32 || MIPS32_N32
2553 menu "Power management options"
2555 config ARCH_HIBERNATION_POSSIBLE
2557 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2559 config ARCH_SUSPEND_POSSIBLE
2561 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2563 source "kernel/power/Kconfig"
2567 config MIPS_EXTERNAL_TIMER
2570 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2571 menu "CPU Power Management"
2572 source "drivers/cpufreq/Kconfig"
2576 source "net/Kconfig"
2578 source "drivers/Kconfig"
2580 source "drivers/firmware/Kconfig"
2584 source "arch/mips/Kconfig.debug"
2586 source "security/Kconfig"
2588 source "crypto/Kconfig"
2590 source "lib/Kconfig"
2592 source "arch/mips/kvm/Kconfig"