4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select HAVE_CONTEXT_TRACKING
6 select HAVE_GENERIC_DMA_COHERENT
9 select HAVE_PERF_EVENTS
10 select PERF_USE_VMALLOC
12 select HAVE_ARCH_TRACEHOOK
13 select ARCH_HAVE_CUSTOM_GPIO_H
14 select HAVE_FUNCTION_TRACER
15 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
16 select HAVE_DYNAMIC_FTRACE
17 select HAVE_FTRACE_MCOUNT_RECORD
18 select HAVE_C_RECORDMCOUNT
19 select HAVE_FUNCTION_GRAPH_TRACER
21 select HAVE_KRETPROBES
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_SYSCALL_TRACEPOINTS
24 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
25 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
26 select RTC_LIB if !MACH_LOONGSON
27 select GENERIC_ATOMIC64 if !64BIT
28 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
30 select HAVE_DMA_API_DEBUG
31 select GENERIC_IRQ_PROBE
32 select GENERIC_IRQ_SHOW
33 select GENERIC_PCI_IOMAP
34 select HAVE_ARCH_JUMP_LABEL
35 select ARCH_WANT_IPC_PARSE_VERSION
36 select IRQ_FORCED_THREADING
38 select HAVE_MEMBLOCK_NODE_MAP
39 select ARCH_DISCARD_MEMBLOCK
40 select GENERIC_SMP_IDLE_THREAD
41 select BUILDTIME_EXTABLE_SORT
42 select GENERIC_CLOCKEVENTS
43 select GENERIC_CMOS_UPDATE
44 select HAVE_MOD_ARCH_SPECIFIC
46 select MODULES_USE_ELF_REL if MODULES
47 select MODULES_USE_ELF_RELA if MODULES && 64BIT
48 select CLONE_BACKWARDS
49 select HAVE_DEBUG_STACKOVERFLOW
51 menu "Machine selection"
58 bool "Alchemy processor based machines"
59 select 64BIT_PHYS_ADDR
63 select SYS_HAS_CPU_MIPS32_R1
64 select SYS_SUPPORTS_32BIT_KERNEL
65 select SYS_SUPPORTS_APM_EMULATION
66 select ARCH_REQUIRE_GPIOLIB
67 select SYS_SUPPORTS_ZBOOT
68 select USB_ARCH_HAS_OHCI
69 select USB_ARCH_HAS_EHCI
72 bool "Texas Instruments AR7"
74 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_LITTLE_ENDIAN
84 select SYS_SUPPORTS_ZBOOT_UART16550
85 select ARCH_REQUIRE_GPIOLIB
89 Support for the Texas Instruments AR7 System-on-a-Chip
90 family: TNETD7100, 7200 and 7300.
93 bool "Atheros AR71XX/AR724X/AR913X based boards"
94 select ARCH_REQUIRE_GPIOLIB
98 select DMA_NONCOHERENT
103 select SYS_HAS_CPU_MIPS32_R2
104 select SYS_HAS_EARLY_PRINTK
105 select SYS_SUPPORTS_32BIT_KERNEL
106 select SYS_SUPPORTS_BIG_ENDIAN
108 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
111 bool "Broadcom BCM47XX based boards"
112 select ARCH_WANT_OPTIONAL_GPIOLIB
116 select DMA_NONCOHERENT
120 select SYS_HAS_CPU_MIPS32_R1
121 select NO_EXCEPT_FILL
122 select SYS_SUPPORTS_32BIT_KERNEL
123 select SYS_SUPPORTS_LITTLE_ENDIAN
124 select SYS_HAS_EARLY_PRINTK
126 Support for BCM47XX based boards
129 bool "Broadcom BCM63XX based boards"
133 select DMA_NONCOHERENT
135 select SYS_HAS_CPU_MIPS32_R1
136 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_BIG_ENDIAN
139 select SYS_HAS_EARLY_PRINTK
141 select ARCH_REQUIRE_GPIOLIB
144 Support for BCM63XX based boards
151 select DMA_NONCOHERENT
152 select EARLY_PRINTK_8250 if EARLY_PRINTK
158 select PCI_GT64XXX_PCI0
160 select SYS_HAS_CPU_NEVADA
161 select SYS_HAS_EARLY_PRINTK
162 select SYS_SUPPORTS_32BIT_KERNEL
163 select SYS_SUPPORTS_64BIT_KERNEL
164 select SYS_SUPPORTS_LITTLE_ENDIAN
166 config MACH_DECSTATION
173 select CPU_DADDI_WORKAROUNDS if 64BIT
174 select CPU_R4000_WORKAROUNDS if 64BIT
175 select CPU_R4400_WORKAROUNDS if 64BIT
176 select DMA_NONCOHERENT
179 select SYS_HAS_CPU_R3000
180 select SYS_HAS_CPU_R4X00
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_SUPPORTS_64BIT_KERNEL
183 select SYS_SUPPORTS_LITTLE_ENDIAN
184 select SYS_SUPPORTS_128HZ
185 select SYS_SUPPORTS_256HZ
186 select SYS_SUPPORTS_1024HZ
188 This enables support for DEC's MIPS based workstations. For details
189 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
190 DECstation porting pages on <http://decstation.unix-ag.org/>.
192 If you have one of the following DECstation Models you definitely
193 want to choose R4xx0 for the CPU Type:
200 otherwise choose R3000.
203 bool "Jazz family of machines"
206 select ARCH_MAY_HAVE_PC_FDC
209 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
210 select GENERIC_ISA_DMA
211 select HAVE_PCSPKR_PLATFORM
216 select SYS_HAS_CPU_R4X00
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_64BIT_KERNEL
219 select SYS_SUPPORTS_100HZ
221 This a family of machines based on the MIPS R4030 chipset which was
222 used by several vendors to build RISC/os and Windows NT workstations.
223 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
224 Olivetti M700-10 workstations.
227 bool "Ingenic JZ4740 based machines"
228 select SYS_HAS_CPU_MIPS32_R1
229 select SYS_SUPPORTS_32BIT_KERNEL
230 select SYS_SUPPORTS_LITTLE_ENDIAN
231 select SYS_SUPPORTS_ZBOOT_UART16550
232 select DMA_NONCOHERENT
234 select ARCH_REQUIRE_GPIOLIB
235 select SYS_HAS_EARLY_PRINTK
238 select GENERIC_IRQ_CHIP
241 bool "Lantiq based platforms"
242 select DMA_NONCOHERENT
246 select SYS_HAS_CPU_MIPS32_R1
247 select SYS_HAS_CPU_MIPS32_R2
248 select SYS_SUPPORTS_BIG_ENDIAN
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_MULTITHREADING
251 select SYS_HAS_EARLY_PRINTK
252 select ARCH_REQUIRE_GPIOLIB
255 select HAVE_MACH_CLKDEV
259 select PINCTRL_LANTIQ
262 bool "LASAT Networks platforms"
265 select DMA_NONCOHERENT
266 select SYS_HAS_EARLY_PRINTK
269 select PCI_GT64XXX_PCI0
271 select R5000_CPU_SCACHE
272 select SYS_HAS_CPU_R5000
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
275 select SYS_SUPPORTS_LITTLE_ENDIAN
278 bool "Loongson family of machines"
279 select SYS_SUPPORTS_ZBOOT
281 This enables the support of Loongson family of machines.
283 Loongson is a family of general-purpose MIPS-compatible CPUs.
284 developed at Institute of Computing Technology (ICT),
285 Chinese Academy of Sciences (CAS) in the People's Republic
286 of China. The chief architect is Professor Weiwu Hu.
288 config MACH_LOONGSON1
289 bool "Loongson 1 family of machines"
290 select SYS_SUPPORTS_ZBOOT
292 This enables support for the Loongson 1 based machines.
294 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
295 the ICT (Institute of Computing Technology) and the Chinese Academy
299 bool "MIPS Malta board"
300 select ARCH_MAY_HAVE_PC_FDC
306 select DMA_NONCOHERENT
307 select GENERIC_ISA_DMA
308 select HAVE_PCSPKR_PLATFORM
315 select MIPS_CPU_SCACHE
316 select PCI_GT64XXX_PCI0
319 select SYS_HAS_CPU_MIPS32_R1
320 select SYS_HAS_CPU_MIPS32_R2
321 select SYS_HAS_CPU_MIPS64_R1
322 select SYS_HAS_CPU_MIPS64_R2
323 select SYS_HAS_CPU_NEVADA
324 select SYS_HAS_CPU_RM7000
325 select SYS_HAS_EARLY_PRINTK
326 select SYS_SUPPORTS_32BIT_KERNEL
327 select SYS_SUPPORTS_64BIT_KERNEL
328 select SYS_SUPPORTS_BIG_ENDIAN
329 select SYS_SUPPORTS_LITTLE_ENDIAN
330 select SYS_SUPPORTS_MIPS_CMP
331 select SYS_SUPPORTS_MULTITHREADING
332 select SYS_SUPPORTS_SMARTMIPS
333 select SYS_SUPPORTS_ZBOOT
335 This enables support for the MIPS Technologies Malta evaluation
339 bool "MIPS SEAD3 board"
345 select CPU_MIPSR2_IRQ_VI
346 select CPU_MIPSR2_IRQ_EI
347 select DMA_NONCOHERENT
351 select SYS_HAS_CPU_MIPS32_R1
352 select SYS_HAS_CPU_MIPS32_R2
353 select SYS_HAS_CPU_MIPS64_R1
354 select SYS_HAS_EARLY_PRINTK
355 select SYS_SUPPORTS_32BIT_KERNEL
356 select SYS_SUPPORTS_64BIT_KERNEL
357 select SYS_SUPPORTS_BIG_ENDIAN
358 select SYS_SUPPORTS_LITTLE_ENDIAN
359 select SYS_SUPPORTS_SMARTMIPS
360 select SYS_SUPPORTS_MICROMIPS
361 select USB_ARCH_HAS_EHCI
362 select USB_EHCI_BIG_ENDIAN_DESC
363 select USB_EHCI_BIG_ENDIAN_MMIO
366 This enables support for the MIPS Technologies SEAD3 evaluation
370 bool "NEC EMMA2RH Mark-eins board"
374 This enables support for the NEC Electronics Mark-eins boards.
377 bool "NEC VR4100 series based machines"
380 select SYS_HAS_CPU_VR41XX
381 select ARCH_REQUIRE_GPIOLIB
384 bool "NXP STB220 board"
387 Support for NXP Semiconductors STB220 Development Board.
394 Support for NXP Semiconductors STB225 Development Board.
397 bool "PMC-Sierra MSP chipsets"
400 select DMA_NONCOHERENT
402 select NO_EXCEPT_FILL
404 select SYS_HAS_CPU_MIPS32_R1
405 select SYS_HAS_CPU_MIPS32_R2
406 select SYS_SUPPORTS_32BIT_KERNEL
407 select SYS_SUPPORTS_BIG_ENDIAN
410 select SERIAL_8250_CONSOLE
411 select USB_EHCI_BIG_ENDIAN_MMIO
412 select USB_EHCI_BIG_ENDIAN_DESC
414 This adds support for the PMC-Sierra family of Multi-Service
415 Processor System-On-A-Chips. These parts include a number
416 of integrated peripherals, interfaces and DSPs in addition to
417 a variety of MIPS cores.
420 bool "Ralink based machines"
424 select DMA_NONCOHERENT
427 select SYS_HAS_CPU_MIPS32_R1
428 select SYS_HAS_CPU_MIPS32_R2
429 select SYS_SUPPORTS_32BIT_KERNEL
430 select SYS_SUPPORTS_LITTLE_ENDIAN
431 select SYS_HAS_EARLY_PRINTK
432 select HAVE_MACH_CLKDEV
434 select ARCH_HAS_RESET_CONTROLLER
435 select RESET_CONTROLLER
438 bool "SGI IP22 (Indy/Indigo2)"
444 select DEFAULT_SGI_PARTITION
445 select DMA_NONCOHERENT
449 select IP22_CPU_SCACHE
451 select GENERIC_ISA_DMA_SUPPORT_BROKEN
453 select SGI_HAS_INDYDOG
459 select SYS_HAS_CPU_R4X00
460 select SYS_HAS_CPU_R5000
462 # Disable EARLY_PRINTK for now since it leads to overwritten prom
463 # memory during early boot on some machines.
465 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
466 # for a more details discussion
468 # select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_32BIT_KERNEL
470 select SYS_SUPPORTS_64BIT_KERNEL
471 select SYS_SUPPORTS_BIG_ENDIAN
473 This are the SGI Indy, Challenge S and Indigo2, as well as certain
474 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
475 that runs on these, say Y here.
478 bool "SGI IP27 (Origin200/2000)"
482 select DEFAULT_SGI_PARTITION
484 select SYS_HAS_EARLY_PRINTK
486 select NR_CPUS_DEFAULT_64
487 select SYS_HAS_CPU_R10000
488 select SYS_SUPPORTS_64BIT_KERNEL
489 select SYS_SUPPORTS_BIG_ENDIAN
490 select SYS_SUPPORTS_NUMA
491 select SYS_SUPPORTS_SMP
493 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
494 workstations. To compile a Linux kernel that runs on these, say Y
498 bool "SGI IP28 (Indigo2 R10k)"
504 select DEFAULT_SGI_PARTITION
505 select DMA_NONCOHERENT
506 select GENERIC_ISA_DMA_SUPPORT_BROKEN
512 select SGI_HAS_INDYDOG
518 select SYS_HAS_CPU_R10000
520 # Disable EARLY_PRINTK for now since it leads to overwritten prom
521 # memory during early boot on some machines.
523 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
524 # for a more details discussion
526 # select SYS_HAS_EARLY_PRINTK
527 select SYS_SUPPORTS_64BIT_KERNEL
528 select SYS_SUPPORTS_BIG_ENDIAN
530 This is the SGI Indigo2 with R10000 processor. To compile a Linux
531 kernel that runs on these, say Y here.
540 select DMA_NONCOHERENT
543 select R5000_CPU_SCACHE
544 select RM7000_CPU_SCACHE
545 select SYS_HAS_CPU_R5000
546 select SYS_HAS_CPU_R10000 if BROKEN
547 select SYS_HAS_CPU_RM7000
548 select SYS_HAS_CPU_NEVADA
549 select SYS_SUPPORTS_64BIT_KERNEL
550 select SYS_SUPPORTS_BIG_ENDIAN
552 If you want this kernel to run on SGI O2 workstation, say Y here.
555 bool "Sibyte BCM91120C-CRhine"
558 select SIBYTE_BCM1120
560 select SYS_HAS_CPU_SB1
561 select SYS_SUPPORTS_BIG_ENDIAN
562 select SYS_SUPPORTS_LITTLE_ENDIAN
565 bool "Sibyte BCM91120x-Carmel"
568 select SIBYTE_BCM1120
570 select SYS_HAS_CPU_SB1
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_LITTLE_ENDIAN
575 bool "Sibyte BCM91125C-CRhone"
578 select SIBYTE_BCM1125
580 select SYS_HAS_CPU_SB1
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_HIGHMEM
583 select SYS_SUPPORTS_LITTLE_ENDIAN
586 bool "Sibyte BCM91125E-Rhone"
589 select SIBYTE_BCM1125H
591 select SYS_HAS_CPU_SB1
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_LITTLE_ENDIAN
596 bool "Sibyte BCM91250A-SWARM"
599 select HAVE_PATA_PLATFORM
602 select SYS_HAS_CPU_SB1
603 select SYS_SUPPORTS_BIG_ENDIAN
604 select SYS_SUPPORTS_HIGHMEM
605 select SYS_SUPPORTS_LITTLE_ENDIAN
606 select ZONE_DMA32 if 64BIT
608 config SIBYTE_LITTLESUR
609 bool "Sibyte BCM91250C2-LittleSur"
612 select HAVE_PATA_PLATFORM
615 select SYS_HAS_CPU_SB1
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_HIGHMEM
618 select SYS_SUPPORTS_LITTLE_ENDIAN
620 config SIBYTE_SENTOSA
621 bool "Sibyte BCM91250E-Sentosa"
626 select SYS_HAS_CPU_SB1
627 select SYS_SUPPORTS_BIG_ENDIAN
628 select SYS_SUPPORTS_LITTLE_ENDIAN
631 bool "Sibyte BCM91480B-BigSur"
634 select NR_CPUS_DEFAULT_4
635 select SIBYTE_BCM1x80
637 select SYS_HAS_CPU_SB1
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select SYS_SUPPORTS_HIGHMEM
640 select SYS_SUPPORTS_LITTLE_ENDIAN
641 select ZONE_DMA32 if 64BIT
644 bool "SNI RM200/300/400"
645 select FW_ARC if CPU_LITTLE_ENDIAN
646 select FW_ARC32 if CPU_LITTLE_ENDIAN
647 select FW_SNIPROM if CPU_BIG_ENDIAN
648 select ARCH_MAY_HAVE_PC_FDC
652 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
653 select DMA_NONCOHERENT
654 select GENERIC_ISA_DMA
655 select HAVE_PCSPKR_PLATFORM
662 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
663 select SYS_HAS_CPU_R4X00
664 select SYS_HAS_CPU_R5000
665 select SYS_HAS_CPU_R10000
666 select R5000_CPU_SCACHE
667 select SYS_HAS_EARLY_PRINTK
668 select SYS_SUPPORTS_32BIT_KERNEL
669 select SYS_SUPPORTS_64BIT_KERNEL
670 select SYS_SUPPORTS_BIG_ENDIAN
671 select SYS_SUPPORTS_HIGHMEM
672 select SYS_SUPPORTS_LITTLE_ENDIAN
674 The SNI RM200/300/400 are MIPS-based machines manufactured by
675 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
676 Technology and now in turn merged with Fujitsu. Say Y here to
677 support this machine type.
680 bool "Toshiba TX39 series based machines"
683 bool "Toshiba TX49 series based machines"
685 config MIKROTIK_RB532
686 bool "Mikrotik RB532 boards"
689 select DMA_NONCOHERENT
692 select SYS_HAS_CPU_MIPS32_R1
693 select SYS_SUPPORTS_32BIT_KERNEL
694 select SYS_SUPPORTS_LITTLE_ENDIAN
697 select ARCH_REQUIRE_GPIOLIB
699 Support the Mikrotik(tm) RouterBoard 532 series,
700 based on the IDT RC32434 SoC.
702 config CAVIUM_OCTEON_SOC
703 bool "Cavium Networks Octeon SoC based boards"
705 select 64BIT_PHYS_ADDR
707 select SYS_SUPPORTS_64BIT_KERNEL
708 select SYS_SUPPORTS_BIG_ENDIAN
710 select SYS_SUPPORTS_HOTPLUG_CPU
711 select SYS_HAS_EARLY_PRINTK
712 select SYS_HAS_CPU_CAVIUM_OCTEON
716 select USB_ARCH_HAS_OHCI
717 select USB_ARCH_HAS_EHCI
719 select ARCH_REQUIRE_GPIOLIB
721 This option supports all of the Octeon reference boards from Cavium
722 Networks. It builds a kernel that dynamically determines the Octeon
723 CPU type and supports all known board reference implementations.
724 Some of the supported boards are:
731 Say Y here for most Octeon reference boards.
734 bool "Netlogic XLR/XLS based systems"
737 select SYS_HAS_CPU_XLR
738 select SYS_SUPPORTS_SMP
741 select SYS_SUPPORTS_32BIT_KERNEL
742 select SYS_SUPPORTS_64BIT_KERNEL
743 select 64BIT_PHYS_ADDR
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select SYS_SUPPORTS_HIGHMEM
747 select NR_CPUS_DEFAULT_32
751 select ZONE_DMA32 if 64BIT
753 select SYS_HAS_EARLY_PRINTK
754 select USB_ARCH_HAS_OHCI if USB_SUPPORT
755 select USB_ARCH_HAS_EHCI if USB_SUPPORT
756 select SYS_SUPPORTS_ZBOOT
757 select SYS_SUPPORTS_ZBOOT_UART16550
759 Support for systems based on Netlogic XLR and XLS processors.
760 Say Y here if you have a XLR or XLS based board.
763 bool "Netlogic XLP based systems"
766 select SYS_HAS_CPU_XLP
767 select SYS_SUPPORTS_SMP
769 select SYS_SUPPORTS_32BIT_KERNEL
770 select SYS_SUPPORTS_64BIT_KERNEL
771 select 64BIT_PHYS_ADDR
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select SYS_SUPPORTS_LITTLE_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
776 select NR_CPUS_DEFAULT_32
780 select ZONE_DMA32 if 64BIT
782 select SYS_HAS_EARLY_PRINTK
784 select SYS_SUPPORTS_ZBOOT
785 select SYS_SUPPORTS_ZBOOT_UART16550
787 This board is based on Netlogic XLP Processor.
788 Say Y here if you have a XLP based board.
792 source "arch/mips/alchemy/Kconfig"
793 source "arch/mips/ath79/Kconfig"
794 source "arch/mips/bcm47xx/Kconfig"
795 source "arch/mips/bcm63xx/Kconfig"
796 source "arch/mips/jazz/Kconfig"
797 source "arch/mips/jz4740/Kconfig"
798 source "arch/mips/lantiq/Kconfig"
799 source "arch/mips/lasat/Kconfig"
800 source "arch/mips/pmcs-msp71xx/Kconfig"
801 source "arch/mips/ralink/Kconfig"
802 source "arch/mips/sgi-ip27/Kconfig"
803 source "arch/mips/sibyte/Kconfig"
804 source "arch/mips/txx9/Kconfig"
805 source "arch/mips/vr41xx/Kconfig"
806 source "arch/mips/cavium-octeon/Kconfig"
807 source "arch/mips/loongson/Kconfig"
808 source "arch/mips/loongson1/Kconfig"
809 source "arch/mips/netlogic/Kconfig"
813 config RWSEM_GENERIC_SPINLOCK
817 config RWSEM_XCHGADD_ALGORITHM
820 config ARCH_HAS_ILOG2_U32
824 config ARCH_HAS_ILOG2_U64
828 config GENERIC_HWEIGHT
832 config GENERIC_CALIBRATE_DELAY
836 config SCHED_OMIT_FRAME_POINTER
841 # Select some configuration options automatically based on user selections.
846 config ARCH_MAY_HAVE_PC_FDC
889 select ARCH_REQUIRE_GPIOLIB
895 config ARCH_DMA_ADDR_T_64BIT
896 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
901 config DMA_NONCOHERENT
903 select NEED_DMA_MAP_STATE
905 config NEED_DMA_MAP_STATE
908 config SYS_HAS_EARLY_PRINTK
912 bool "Support for hot-pluggable CPUs"
913 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
915 Say Y here to allow turning CPUs off and on. CPUs can be
916 controlled through /sys/devices/system/cpu.
917 (Note: power management support will enable this option
918 automatically on SMP systems. )
919 Say N if you want to disable CPU hotplug.
921 config SYS_SUPPORTS_HOTPLUG_CPU
945 config GENERIC_ISA_DMA
947 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
950 config GENERIC_ISA_DMA_SUPPORT_BROKEN
952 select GENERIC_ISA_DMA
961 # Endianness selection. Sufficiently obscure so many users don't know what to
962 # answer,so we try hard to limit the available choices. Also the use of a
963 # choice statement should be more obvious to the user.
966 prompt "Endianness selection"
968 Some MIPS machines can be configured for either little or big endian
969 byte order. These modes require different kernels and a different
970 Linux distribution. In general there is one preferred byteorder for a
971 particular system but some systems are just as commonly used in the
972 one or the other endianness.
974 config CPU_BIG_ENDIAN
976 depends on SYS_SUPPORTS_BIG_ENDIAN
978 config CPU_LITTLE_ENDIAN
980 depends on SYS_SUPPORTS_LITTLE_ENDIAN
987 config SYS_SUPPORTS_APM_EMULATION
990 config SYS_SUPPORTS_BIG_ENDIAN
993 config SYS_SUPPORTS_LITTLE_ENDIAN
996 config SYS_SUPPORTS_HUGETLBFS
998 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1001 config MIPS_HUGE_TLB_SUPPORT
1002 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1025 config PCI_GT64XXX_PCI0
1028 config NO_EXCEPT_FILL
1035 select DMA_NONCOHERENT
1037 select SWAP_IO_SPACE
1038 select SYS_HAS_CPU_R5500
1039 select SYS_SUPPORTS_32BIT_KERNEL
1040 select SYS_SUPPORTS_64BIT_KERNEL
1041 select SYS_SUPPORTS_BIG_ENDIAN
1048 select DMA_NONCOHERENT
1049 select SYS_HAS_CPU_MIPS32_R2
1050 select SYS_SUPPORTS_32BIT_KERNEL
1051 select SYS_SUPPORTS_LITTLE_ENDIAN
1052 select SYS_SUPPORTS_BIG_ENDIAN
1053 select CPU_MIPSR2_IRQ_VI
1059 config SWAP_IO_SPACE
1062 config SGI_HAS_INDYDOG
1074 config SGI_HAS_ZILOG
1077 config SGI_HAS_I8042
1080 config DEFAULT_SGI_PARTITION
1092 config MIPS_L1_CACHE_SHIFT
1094 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1095 default "6" if MIPS_CPU_SCACHE
1096 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1099 config HAVE_STD_PC_SERIAL_PORT
1103 bool "ARC console support"
1104 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1108 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1113 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1122 menu "CPU selection"
1128 config CPU_LOONGSON2E
1130 depends on SYS_HAS_CPU_LOONGSON2E
1131 select CPU_LOONGSON2
1133 The Loongson 2E processor implements the MIPS III instruction set
1134 with many extensions.
1136 It has an internal FPGA northbridge, which is compatible to
1139 config CPU_LOONGSON2F
1141 depends on SYS_HAS_CPU_LOONGSON2F
1142 select CPU_LOONGSON2
1143 select ARCH_REQUIRE_GPIOLIB
1145 The Loongson 2F processor implements the MIPS III instruction set
1146 with many extensions.
1148 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1149 have a similar programming interface with FPGA northbridge used in
1152 config CPU_LOONGSON1B
1154 depends on SYS_HAS_CPU_LOONGSON1B
1155 select CPU_LOONGSON1
1157 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1158 release 2 instruction set.
1160 config CPU_MIPS32_R1
1161 bool "MIPS32 Release 1"
1162 depends on SYS_HAS_CPU_MIPS32_R1
1163 select CPU_HAS_PREFETCH
1164 select CPU_SUPPORTS_32BIT_KERNEL
1165 select CPU_SUPPORTS_HIGHMEM
1167 Choose this option to build a kernel for release 1 or later of the
1168 MIPS32 architecture. Most modern embedded systems with a 32-bit
1169 MIPS processor are based on a MIPS32 processor. If you know the
1170 specific type of processor in your system, choose those that one
1171 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1172 Release 2 of the MIPS32 architecture is available since several
1173 years so chances are you even have a MIPS32 Release 2 processor
1174 in which case you should choose CPU_MIPS32_R2 instead for better
1177 config CPU_MIPS32_R2
1178 bool "MIPS32 Release 2"
1179 depends on SYS_HAS_CPU_MIPS32_R2
1180 select CPU_HAS_PREFETCH
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_HIGHMEM
1185 Choose this option to build a kernel for release 2 or later of the
1186 MIPS32 architecture. Most modern embedded systems with a 32-bit
1187 MIPS processor are based on a MIPS32 processor. If you know the
1188 specific type of processor in your system, choose those that one
1189 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1191 config CPU_MIPS64_R1
1192 bool "MIPS64 Release 1"
1193 depends on SYS_HAS_CPU_MIPS64_R1
1194 select CPU_HAS_PREFETCH
1195 select CPU_SUPPORTS_32BIT_KERNEL
1196 select CPU_SUPPORTS_64BIT_KERNEL
1197 select CPU_SUPPORTS_HIGHMEM
1198 select CPU_SUPPORTS_HUGEPAGES
1200 Choose this option to build a kernel for release 1 or later of the
1201 MIPS64 architecture. Many modern embedded systems with a 64-bit
1202 MIPS processor are based on a MIPS64 processor. If you know the
1203 specific type of processor in your system, choose those that one
1204 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1205 Release 2 of the MIPS64 architecture is available since several
1206 years so chances are you even have a MIPS64 Release 2 processor
1207 in which case you should choose CPU_MIPS64_R2 instead for better
1210 config CPU_MIPS64_R2
1211 bool "MIPS64 Release 2"
1212 depends on SYS_HAS_CPU_MIPS64_R2
1213 select CPU_HAS_PREFETCH
1214 select CPU_SUPPORTS_32BIT_KERNEL
1215 select CPU_SUPPORTS_64BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1217 select CPU_SUPPORTS_HUGEPAGES
1219 Choose this option to build a kernel for release 2 or later of the
1220 MIPS64 architecture. Many modern embedded systems with a 64-bit
1221 MIPS processor are based on a MIPS64 processor. If you know the
1222 specific type of processor in your system, choose those that one
1223 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1227 depends on SYS_HAS_CPU_R3000
1229 select CPU_SUPPORTS_32BIT_KERNEL
1230 select CPU_SUPPORTS_HIGHMEM
1232 Please make sure to pick the right CPU type. Linux/MIPS is not
1233 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1234 *not* work on R4000 machines and vice versa. However, since most
1235 of the supported machines have an R4000 (or similar) CPU, R4x00
1236 might be a safe bet. If the resulting kernel does not work,
1237 try to recompile with R3000.
1241 depends on SYS_HAS_CPU_TX39XX
1242 select CPU_SUPPORTS_32BIT_KERNEL
1246 depends on SYS_HAS_CPU_VR41XX
1247 select CPU_SUPPORTS_32BIT_KERNEL
1248 select CPU_SUPPORTS_64BIT_KERNEL
1250 The options selects support for the NEC VR4100 series of processors.
1251 Only choose this option if you have one of these processors as a
1252 kernel built with this option will not run on any other type of
1253 processor or vice versa.
1257 depends on SYS_HAS_CPU_R4300
1258 select CPU_SUPPORTS_32BIT_KERNEL
1259 select CPU_SUPPORTS_64BIT_KERNEL
1261 MIPS Technologies R4300-series processors.
1265 depends on SYS_HAS_CPU_R4X00
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1268 select CPU_SUPPORTS_HUGEPAGES
1270 MIPS Technologies R4000-series processors other than 4300, including
1271 the R4000, R4400, R4600, and 4700.
1275 depends on SYS_HAS_CPU_TX49XX
1276 select CPU_HAS_PREFETCH
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1279 select CPU_SUPPORTS_HUGEPAGES
1283 depends on SYS_HAS_CPU_R5000
1284 select CPU_SUPPORTS_32BIT_KERNEL
1285 select CPU_SUPPORTS_64BIT_KERNEL
1286 select CPU_SUPPORTS_HUGEPAGES
1288 MIPS Technologies R5000-series processors other than the Nevada.
1292 depends on SYS_HAS_CPU_R5432
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select CPU_SUPPORTS_HUGEPAGES
1299 depends on SYS_HAS_CPU_R5500
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1302 select CPU_SUPPORTS_HUGEPAGES
1304 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1309 depends on SYS_HAS_CPU_R6000
1310 select CPU_SUPPORTS_32BIT_KERNEL
1312 MIPS Technologies R6000 and R6000A series processors. Note these
1313 processors are extremely rare and the support for them is incomplete.
1317 depends on SYS_HAS_CPU_NEVADA
1318 select CPU_SUPPORTS_32BIT_KERNEL
1319 select CPU_SUPPORTS_64BIT_KERNEL
1320 select CPU_SUPPORTS_HUGEPAGES
1322 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1326 depends on SYS_HAS_CPU_R8000
1327 select CPU_HAS_PREFETCH
1328 select CPU_SUPPORTS_64BIT_KERNEL
1330 MIPS Technologies R8000 processors. Note these processors are
1331 uncommon and the support for them is incomplete.
1335 depends on SYS_HAS_CPU_R10000
1336 select CPU_HAS_PREFETCH
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HIGHMEM
1340 select CPU_SUPPORTS_HUGEPAGES
1342 MIPS Technologies R10000-series processors.
1346 depends on SYS_HAS_CPU_RM7000
1347 select CPU_HAS_PREFETCH
1348 select CPU_SUPPORTS_32BIT_KERNEL
1349 select CPU_SUPPORTS_64BIT_KERNEL
1350 select CPU_SUPPORTS_HIGHMEM
1351 select CPU_SUPPORTS_HUGEPAGES
1355 depends on SYS_HAS_CPU_SB1
1356 select CPU_SUPPORTS_32BIT_KERNEL
1357 select CPU_SUPPORTS_64BIT_KERNEL
1358 select CPU_SUPPORTS_HIGHMEM
1359 select CPU_SUPPORTS_HUGEPAGES
1360 select WEAK_ORDERING
1362 config CPU_CAVIUM_OCTEON
1363 bool "Cavium Octeon processor"
1364 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1365 select ARCH_SPARSEMEM_ENABLE
1366 select CPU_HAS_PREFETCH
1367 select CPU_SUPPORTS_64BIT_KERNEL
1368 select SYS_SUPPORTS_SMP
1369 select NR_CPUS_DEFAULT_16
1370 select WEAK_ORDERING
1371 select CPU_SUPPORTS_HIGHMEM
1372 select CPU_SUPPORTS_HUGEPAGES
1375 select USB_EHCI_BIG_ENDIAN_MMIO
1377 The Cavium Octeon processor is a highly integrated chip containing
1378 many ethernet hardware widgets for networking tasks. The processor
1379 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1380 Full details can be found at http://www.caviumnetworks.com.
1382 config CPU_BMIPS3300
1384 depends on SYS_HAS_CPU_BMIPS3300
1387 Broadcom BMIPS3300 processors.
1389 config CPU_BMIPS4350
1391 depends on SYS_HAS_CPU_BMIPS4350
1393 select SYS_SUPPORTS_SMP
1394 select SYS_SUPPORTS_HOTPLUG_CPU
1396 Broadcom BMIPS4350 ("VIPER") processors.
1398 config CPU_BMIPS4380
1400 depends on SYS_HAS_CPU_BMIPS4380
1402 select SYS_SUPPORTS_SMP
1403 select SYS_SUPPORTS_HOTPLUG_CPU
1405 Broadcom BMIPS4380 processors.
1407 config CPU_BMIPS5000
1409 depends on SYS_HAS_CPU_BMIPS5000
1411 select CPU_SUPPORTS_HIGHMEM
1412 select MIPS_CPU_SCACHE
1413 select SYS_SUPPORTS_SMP
1414 select SYS_SUPPORTS_HOTPLUG_CPU
1416 Broadcom BMIPS5000 processors.
1419 bool "Netlogic XLR SoC"
1420 depends on SYS_HAS_CPU_XLR
1421 select CPU_SUPPORTS_32BIT_KERNEL
1422 select CPU_SUPPORTS_64BIT_KERNEL
1423 select CPU_SUPPORTS_HIGHMEM
1424 select CPU_SUPPORTS_HUGEPAGES
1425 select WEAK_ORDERING
1426 select WEAK_REORDERING_BEYOND_LLSC
1428 Netlogic Microsystems XLR/XLS processors.
1431 bool "Netlogic XLP SoC"
1432 depends on SYS_HAS_CPU_XLP
1433 select CPU_SUPPORTS_32BIT_KERNEL
1434 select CPU_SUPPORTS_64BIT_KERNEL
1435 select CPU_SUPPORTS_HIGHMEM
1436 select WEAK_ORDERING
1437 select WEAK_REORDERING_BEYOND_LLSC
1438 select CPU_HAS_PREFETCH
1441 Netlogic Microsystems XLP processors.
1445 config CPU_NOP_WORKAROUNDS
1448 config CPU_JUMP_WORKAROUNDS
1451 config CPU_LOONGSON2F_WORKAROUNDS
1452 bool "Loongson 2F Workarounds"
1454 select CPU_NOP_WORKAROUNDS
1455 select CPU_JUMP_WORKAROUNDS
1457 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1458 require workarounds. Without workarounds the system may hang
1459 unexpectedly. For more information please refer to the gas
1460 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1462 Loongson 2F03 and later have fixed these issues and no workarounds
1463 are needed. The workarounds have no significant side effect on them
1464 but may decrease the performance of the system so this option should
1465 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1468 If unsure, please say Y.
1469 endif # CPU_LOONGSON2F
1471 config SYS_SUPPORTS_ZBOOT
1473 select HAVE_KERNEL_GZIP
1474 select HAVE_KERNEL_BZIP2
1475 select HAVE_KERNEL_LZ4
1476 select HAVE_KERNEL_LZMA
1477 select HAVE_KERNEL_LZO
1478 select HAVE_KERNEL_XZ
1480 config SYS_SUPPORTS_ZBOOT_UART16550
1482 select SYS_SUPPORTS_ZBOOT
1484 config CPU_LOONGSON2
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_HUGEPAGES
1491 config CPU_LOONGSON1
1495 select CPU_HAS_PREFETCH
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_HIGHMEM
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select DMA_NONCOHERENT
1505 select SWAP_IO_SPACE
1506 select WEAK_ORDERING
1508 config SYS_HAS_CPU_LOONGSON2E
1511 config SYS_HAS_CPU_LOONGSON2F
1513 select CPU_SUPPORTS_CPUFREQ
1514 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1515 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1517 config SYS_HAS_CPU_LOONGSON1B
1520 config SYS_HAS_CPU_MIPS32_R1
1523 config SYS_HAS_CPU_MIPS32_R2
1526 config SYS_HAS_CPU_MIPS64_R1
1529 config SYS_HAS_CPU_MIPS64_R2
1532 config SYS_HAS_CPU_R3000
1535 config SYS_HAS_CPU_TX39XX
1538 config SYS_HAS_CPU_VR41XX
1541 config SYS_HAS_CPU_R4300
1544 config SYS_HAS_CPU_R4X00
1547 config SYS_HAS_CPU_TX49XX
1550 config SYS_HAS_CPU_R5000
1553 config SYS_HAS_CPU_R5432
1556 config SYS_HAS_CPU_R5500
1559 config SYS_HAS_CPU_R6000
1562 config SYS_HAS_CPU_NEVADA
1565 config SYS_HAS_CPU_R8000
1568 config SYS_HAS_CPU_R10000
1571 config SYS_HAS_CPU_RM7000
1574 config SYS_HAS_CPU_SB1
1577 config SYS_HAS_CPU_CAVIUM_OCTEON
1580 config SYS_HAS_CPU_BMIPS3300
1583 config SYS_HAS_CPU_BMIPS4350
1586 config SYS_HAS_CPU_BMIPS4380
1589 config SYS_HAS_CPU_BMIPS5000
1592 config SYS_HAS_CPU_XLR
1595 config SYS_HAS_CPU_XLP
1599 # CPU may reorder R->R, R->W, W->R, W->W
1600 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1602 config WEAK_ORDERING
1606 # CPU may reorder reads and writes beyond LL/SC
1607 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1609 config WEAK_REORDERING_BEYOND_LLSC
1614 # These two indicate any level of the MIPS32 and MIPS64 architecture
1618 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1622 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1625 # These two indicate the revision of the architecture, either Release 1 or Release 2
1629 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1633 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1635 config SYS_SUPPORTS_32BIT_KERNEL
1637 config SYS_SUPPORTS_64BIT_KERNEL
1639 config CPU_SUPPORTS_32BIT_KERNEL
1641 config CPU_SUPPORTS_64BIT_KERNEL
1643 config CPU_SUPPORTS_CPUFREQ
1645 config CPU_SUPPORTS_ADDRWINCFG
1647 config CPU_SUPPORTS_HUGEPAGES
1649 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1651 config MIPS_PGD_C0_CONTEXT
1653 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1656 # Set to y for ptrace access to watch registers.
1658 config HARDWARE_WATCHPOINTS
1660 default y if CPU_MIPSR1 || CPU_MIPSR2
1665 prompt "Kernel code model"
1667 You should only select this option if you have a workload that
1668 actually benefits from 64-bit processing or if your machine has
1669 large memory. You will only be presented a single option in this
1670 menu if your system does not support both 32-bit and 64-bit kernels.
1673 bool "32-bit kernel"
1674 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1677 Select this option if you want to build a 32-bit kernel.
1679 bool "64-bit kernel"
1680 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1682 Select this option if you want to build a 64-bit kernel.
1687 bool "KVM Guest Kernel"
1688 depends on BROKEN_ON_SMP
1690 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1692 config KVM_HOST_FREQ
1693 int "KVM Host Processor Frequency (MHz)"
1694 depends on KVM_GUEST
1697 Select this option if building a guest kernel for KVM to skip
1698 RTC emulation when determining guest CPU Frequency. Instead, the guest
1699 processor frequency is automatically derived from the host frequency.
1702 prompt "Kernel page size"
1703 default PAGE_SIZE_4KB
1705 config PAGE_SIZE_4KB
1707 depends on !CPU_LOONGSON2
1709 This option select the standard 4kB Linux page size. On some
1710 R3000-family processors this is the only available page size. Using
1711 4kB page size will minimize memory consumption and is therefore
1712 recommended for low memory systems.
1714 config PAGE_SIZE_8KB
1716 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1718 Using 8kB page size will result in higher performance kernel at
1719 the price of higher memory consumption. This option is available
1720 only on R8000 and cnMIPS processors. Note that you will need a
1721 suitable Linux distribution to support this.
1723 config PAGE_SIZE_16KB
1725 depends on !CPU_R3000 && !CPU_TX39XX
1727 Using 16kB page size will result in higher performance kernel at
1728 the price of higher memory consumption. This option is available on
1729 all non-R3000 family processors. Note that you will need a suitable
1730 Linux distribution to support this.
1732 config PAGE_SIZE_32KB
1734 depends on CPU_CAVIUM_OCTEON
1736 Using 32kB page size will result in higher performance kernel at
1737 the price of higher memory consumption. This option is available
1738 only on cnMIPS cores. Note that you will need a suitable Linux
1739 distribution to support this.
1741 config PAGE_SIZE_64KB
1743 depends on !CPU_R3000 && !CPU_TX39XX
1745 Using 64kB page size will result in higher performance kernel at
1746 the price of higher memory consumption. This option is available on
1747 all non-R3000 family processor. Not that at the time of this
1748 writing this option is still high experimental.
1752 config FORCE_MAX_ZONEORDER
1753 int "Maximum zone order"
1754 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1755 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1756 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1757 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1758 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1759 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1763 The kernel memory allocator divides physically contiguous memory
1764 blocks into "zones", where each zone is a power of two number of
1765 pages. This option selects the largest power of two that the kernel
1766 keeps in the memory allocator. If you need to allocate very large
1767 blocks of physically contiguous memory, then you may need to
1768 increase this value.
1770 This config option is actually maximum order plus one. For example,
1771 a value of 11 means that the largest free memory block is 2^10 pages.
1773 The page size is not necessarily 4KB. Keep this in mind
1774 when choosing a value for this option.
1777 bool "Use GIC global counter for clock events"
1778 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1780 Use the GIC global counter for the clock events. The R4K clock
1781 event driver is always present, so if the platform ends up not
1782 detecting a GIC, it will fall back to the R4K timer for the
1783 generation of clock events.
1788 config IP22_CPU_SCACHE
1793 # Support for a MIPS32 / MIPS64 style S-caches
1795 config MIPS_CPU_SCACHE
1799 config R5000_CPU_SCACHE
1803 config RM7000_CPU_SCACHE
1807 config SIBYTE_DMA_PAGEOPS
1808 bool "Use DMA to clear/copy pages"
1811 Instead of using the CPU to zero and copy pages, use a Data Mover
1812 channel. These DMA channels are otherwise unused by the standard
1813 SiByte Linux port. Seems to give a small performance benefit.
1815 config CPU_HAS_PREFETCH
1818 config CPU_GENERIC_DUMP_TLB
1820 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1824 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1826 config CPU_R4K_CACHE_TLB
1828 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1831 prompt "MIPS MT options"
1833 config MIPS_MT_DISABLED
1834 bool "Disable multithreading support."
1836 Use this option if your workload can't take advantage of
1837 MIPS hardware multithreading support. On systems that don't have
1838 the option of an MT-enabled processor this option will be the only
1839 option in this menu.
1842 bool "Use 1 TC on each available VPE for SMP"
1843 depends on SYS_SUPPORTS_MULTITHREADING
1844 select CPU_MIPSR2_IRQ_VI
1845 select CPU_MIPSR2_IRQ_EI
1848 select SYS_SUPPORTS_SCHED_SMT if SMP
1849 select SYS_SUPPORTS_SMP
1851 select MIPS_PERF_SHARED_TC_COUNTERS
1853 This is a kernel model which is known a VSMP but lately has been
1854 marketesed into SMVP.
1855 Virtual SMP uses the processor's VPEs to implement virtual
1856 processors. In currently available configuration of the 34K processor
1857 this allows for a dual processor. Both processors will share the same
1858 primary caches; each will obtain the half of the TLB for it's own
1859 exclusive use. For a layman this model can be described as similar to
1860 what Intel calls Hyperthreading.
1862 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1865 bool "SMTC: Use all TCs on all VPEs for SMP"
1866 depends on CPU_MIPS32_R2
1867 #depends on CPU_MIPS64_R2 # once there is hardware ...
1868 depends on SYS_SUPPORTS_MULTITHREADING
1869 select CPU_MIPSR2_IRQ_VI
1870 select CPU_MIPSR2_IRQ_EI
1872 select NR_CPUS_DEFAULT_8
1874 select SYS_SUPPORTS_SMP
1877 This is a kernel model which is known a SMTC or lately has been
1878 marketesed into SMVP.
1879 is presenting the available TC's of the core as processors to Linux.
1880 On currently available 34K processors this means a Linux system will
1881 see up to 5 processors. The implementation of the SMTC kernel differs
1882 significantly from VSMP and cannot efficiently coexist in the same
1883 kernel binary so the choice between VSMP and SMTC is a compile time
1886 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1894 bool "SMT (multithreading) scheduler support"
1895 depends on SYS_SUPPORTS_SCHED_SMT
1898 SMT scheduler support improves the CPU scheduler's decision making
1899 when dealing with MIPS MT enabled cores at a cost of slightly
1900 increased overhead in some places. If unsure say N here.
1902 config SYS_SUPPORTS_SCHED_SMT
1905 config SYS_SUPPORTS_MULTITHREADING
1908 config MIPS_MT_FPAFF
1909 bool "Dynamic FPU affinity for FP-intensive threads"
1911 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1913 config MIPS_VPE_LOADER
1914 bool "VPE loader support."
1915 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1916 select CPU_MIPSR2_IRQ_VI
1917 select CPU_MIPSR2_IRQ_EI
1920 Includes a loader for loading an elf relocatable object
1921 onto another VPE and running it.
1923 config MIPS_MT_SMTC_IM_BACKSTOP
1924 bool "Use per-TC register bits as backstop for inhibited IM bits"
1925 depends on MIPS_MT_SMTC
1928 To support multiple TC microthreads acting as "CPUs" within
1929 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1930 during interrupt handling. To support legacy drivers and interrupt
1931 controller management code, SMTC has a "backstop" to track and
1932 if necessary restore the interrupt mask. This has some performance
1933 impact on interrupt service overhead.
1935 config MIPS_MT_SMTC_IRQAFF
1936 bool "Support IRQ affinity API"
1937 depends on MIPS_MT_SMTC
1940 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1941 for SMTC Linux kernel. Requires platform support, of which
1942 an example can be found in the MIPS kernel i8259 and Malta
1943 platform code. Adds some overhead to interrupt dispatch, and
1944 should be used only if you know what you are doing.
1946 config MIPS_VPE_LOADER_TOM
1947 bool "Load VPE program into memory hidden from linux"
1948 depends on MIPS_VPE_LOADER
1951 The loader can use memory that is present but has been hidden from
1952 Linux using the kernel command line option "mem=xxMB". It's up to
1953 you to ensure the amount you put in the option and the space your
1954 program requires is less or equal to the amount physically present.
1956 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1957 config MIPS_VPE_APSP_API
1958 bool "Enable support for AP/SP API (RTLX)"
1959 depends on MIPS_VPE_LOADER
1963 bool "MIPS CMP framework support"
1964 depends on SYS_SUPPORTS_MIPS_CMP
1967 select SYS_SUPPORTS_SMP
1968 select SYS_SUPPORTS_SCHED_SMT if SMP
1969 select WEAK_ORDERING
1972 This is a placeholder option for the GCMP work. It will need to
1973 be handled differently...
1975 config SB1_PASS_1_WORKAROUNDS
1977 depends on CPU_SB1_PASS_1
1980 config SB1_PASS_2_WORKAROUNDS
1982 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1985 config SB1_PASS_2_1_WORKAROUNDS
1987 depends on CPU_SB1 && CPU_SB1_PASS_2
1991 config 64BIT_PHYS_ADDR
1994 config ARCH_PHYS_ADDR_T_64BIT
1995 def_bool 64BIT_PHYS_ADDR
1997 config CPU_HAS_SMARTMIPS
1998 depends on SYS_SUPPORTS_SMARTMIPS
1999 bool "Support for the SmartMIPS ASE"
2001 SmartMIPS is a extension of the MIPS32 architecture aimed at
2002 increased security at both hardware and software level for
2003 smartcards. Enabling this option will allow proper use of the
2004 SmartMIPS instructions by Linux applications. However a kernel with
2005 this option will not work on a MIPS core without SmartMIPS core. If
2006 you don't know you probably don't have SmartMIPS and should say N
2009 config CPU_MICROMIPS
2010 depends on SYS_SUPPORTS_MICROMIPS
2011 bool "Build kernel using microMIPS ISA"
2013 When this option is enabled the kernel will be built using the
2023 # Vectored interrupt mode is an R2 feature
2025 config CPU_MIPSR2_IRQ_VI
2029 # Extended interrupt mode is an R2 feature
2031 config CPU_MIPSR2_IRQ_EI
2036 depends on !CPU_R3000
2042 config CPU_DADDI_WORKAROUNDS
2045 config CPU_R4000_WORKAROUNDS
2047 select CPU_R4400_WORKAROUNDS
2049 config CPU_R4400_WORKAROUNDS
2053 # - Highmem only makes sense for the 32-bit kernel.
2054 # - The current highmem code will only work properly on physically indexed
2055 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2056 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2057 # moment we protect the user and offer the highmem option only on machines
2058 # where it's known to be safe. This will not offer highmem on a few systems
2059 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2060 # indexed CPUs but we're playing safe.
2061 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2062 # know they might have memory configurations that could make use of highmem
2066 bool "High Memory Support"
2067 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2069 config CPU_SUPPORTS_HIGHMEM
2072 config SYS_SUPPORTS_HIGHMEM
2075 config SYS_SUPPORTS_SMARTMIPS
2078 config SYS_SUPPORTS_MICROMIPS
2081 config ARCH_FLATMEM_ENABLE
2083 depends on !NUMA && !CPU_LOONGSON2
2085 config ARCH_DISCONTIGMEM_ENABLE
2087 default y if SGI_IP27
2089 Say Y to support efficient handling of discontiguous physical memory,
2090 for architectures which are either NUMA (Non-Uniform Memory Access)
2091 or have huge holes in the physical address space for other reasons.
2092 See <file:Documentation/vm/numa> for more.
2094 config ARCH_SPARSEMEM_ENABLE
2096 select SPARSEMEM_STATIC
2100 depends on SYS_SUPPORTS_NUMA
2102 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2103 Access). This option improves performance on systems with more
2104 than two nodes; on two node systems it is generally better to
2105 leave it disabled; on single node systems disable this option
2108 config SYS_SUPPORTS_NUMA
2114 depends on NEED_MULTIPLE_NODES
2116 config HW_PERF_EVENTS
2117 bool "Enable hardware performance counter support for perf events"
2118 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2121 Enable hardware performance counter support for perf events. If
2122 disabled, perf events will use software events only.
2127 bool "Multi-Processing support"
2128 depends on SYS_SUPPORTS_SMP
2130 This enables support for systems with more than one CPU. If you have
2131 a system with only one CPU, like most personal computers, say N. If
2132 you have a system with more than one CPU, say Y.
2134 If you say N here, the kernel will run on single and multiprocessor
2135 machines, but will use only one CPU of a multiprocessor machine. If
2136 you say Y here, the kernel will run on many, but not all,
2137 singleprocessor machines. On a singleprocessor machine, the kernel
2138 will run faster if you say N here.
2140 People using multiprocessor machines who say Y here should also say
2141 Y to "Enhanced Real Time Clock Support", below.
2143 See also the SMP-HOWTO available at
2144 <http://www.tldp.org/docs.html#howto>.
2146 If you don't know what to do here, say N.
2151 config SYS_SUPPORTS_MIPS_CMP
2154 config SYS_SUPPORTS_SMP
2157 config NR_CPUS_DEFAULT_4
2160 config NR_CPUS_DEFAULT_8
2163 config NR_CPUS_DEFAULT_16
2166 config NR_CPUS_DEFAULT_32
2169 config NR_CPUS_DEFAULT_64
2173 int "Maximum number of CPUs (2-64)"
2176 default "4" if NR_CPUS_DEFAULT_4
2177 default "8" if NR_CPUS_DEFAULT_8
2178 default "16" if NR_CPUS_DEFAULT_16
2179 default "32" if NR_CPUS_DEFAULT_32
2180 default "64" if NR_CPUS_DEFAULT_64
2182 This allows you to specify the maximum number of CPUs which this
2183 kernel will support. The maximum supported value is 32 for 32-bit
2184 kernel and 64 for 64-bit kernels; the minimum value which makes
2185 sense is 1 for Qemu (useful only for kernel debugging purposes)
2186 and 2 for all others.
2188 This is purely to save memory - each supported CPU adds
2189 approximately eight kilobytes to the kernel image. For best
2190 performance should round up your number of processors to the next
2193 config MIPS_PERF_SHARED_TC_COUNTERS
2197 # Timer Interrupt Frequency Configuration
2201 prompt "Timer frequency"
2204 Allows the configuration of the timer frequency.
2207 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2210 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2213 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2216 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2219 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2222 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2225 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2229 config SYS_SUPPORTS_48HZ
2232 config SYS_SUPPORTS_100HZ
2235 config SYS_SUPPORTS_128HZ
2238 config SYS_SUPPORTS_250HZ
2241 config SYS_SUPPORTS_256HZ
2244 config SYS_SUPPORTS_1000HZ
2247 config SYS_SUPPORTS_1024HZ
2250 config SYS_SUPPORTS_ARBIT_HZ
2252 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2253 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2254 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2255 !SYS_SUPPORTS_1024HZ
2260 default 100 if HZ_100
2261 default 128 if HZ_128
2262 default 250 if HZ_250
2263 default 256 if HZ_256
2264 default 1000 if HZ_1000
2265 default 1024 if HZ_1024
2267 source "kernel/Kconfig.preempt"
2270 bool "Kexec system call"
2272 kexec is a system call that implements the ability to shutdown your
2273 current kernel, and to start another kernel. It is like a reboot
2274 but it is independent of the system firmware. And like a reboot
2275 you can start any kernel with it, not just Linux.
2277 The name comes from the similarity to the exec system call.
2279 It is an ongoing process to be certain the hardware in a machine
2280 is properly shutdown, so do not be surprised if this code does not
2281 initially work for you. As of this writing the exact hardware
2282 interface is strongly in flux, so no good recommendation can be
2286 bool "Kernel crash dumps"
2288 Generate crash dump after being started by kexec.
2289 This should be normally only set in special crash dump kernels
2290 which are loaded in the main kernel with kexec-tools into
2291 a specially reserved region and then later executed after
2292 a crash by kdump/kexec. The crash dump kernel must be compiled
2293 to a memory address not used by the main kernel or firmware using
2296 config PHYSICAL_START
2297 hex "Physical address where the kernel is loaded"
2298 default "0xffffffff84000000" if 64BIT
2299 default "0x84000000" if 32BIT
2300 depends on CRASH_DUMP
2302 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2303 If you plan to use kernel for capturing the crash dump change
2304 this value to start of the reserved region (the "X" value as
2305 specified in the "crashkernel=YM@XM" command line boot parameter
2306 passed to the panic-ed kernel).
2309 bool "Enable seccomp to safely compute untrusted bytecode"
2313 This kernel feature is useful for number crunching applications
2314 that may need to compute untrusted bytecode during their
2315 execution. By using pipes or other transports made available to
2316 the process as file descriptors supporting the read/write
2317 syscalls, it's possible to isolate those applications in
2318 their own address space using seccomp. Once seccomp is
2319 enabled via /proc/<pid>/seccomp, it cannot be disabled
2320 and the task is only allowed to execute a few safe syscalls
2321 defined by each seccomp mode.
2323 If unsure, say Y. Only embedded should say N here.
2325 config CC_STACKPROTECTOR
2326 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2328 This option turns on the -fstack-protector GCC feature. This
2329 feature puts, at the beginning of functions, a canary value on
2330 the stack just before the return address, and validates
2331 the value just before actually returning. Stack based buffer
2332 overflows (that need to overwrite this return address) now also
2333 overwrite the canary, which gets detected and the attack is then
2334 neutralized via a kernel panic.
2336 This feature requires gcc version 4.2 or above.
2341 select OF_EARLY_FLATTREE
2346 config LOCKDEP_SUPPORT
2350 config STACKTRACE_SUPPORT
2354 source "init/Kconfig"
2356 source "kernel/Kconfig.freezer"
2358 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2366 bool "Support for PCI controller"
2367 depends on HW_HAS_PCI
2369 select NO_GENERIC_PCI_IOPORT_MAP
2371 Find out whether you have a PCI motherboard. PCI is the name of a
2372 bus system, i.e. the way the CPU talks to the other stuff inside
2373 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2379 source "drivers/pci/Kconfig"
2381 source "drivers/pci/pcie/Kconfig"
2384 # ISA support is now enabled via select. Too many systems still have the one
2385 # or other ISA chip on the board that users don't know about so don't expect
2386 # users to choose the right thing ...
2393 depends on HW_HAS_EISA
2395 select GENERIC_ISA_DMA
2397 The Extended Industry Standard Architecture (EISA) bus was
2398 developed as an open alternative to the IBM MicroChannel bus.
2400 The EISA bus provided some of the features of the IBM MicroChannel
2401 bus while maintaining backward compatibility with cards made for
2402 the older ISA bus. The EISA bus saw limited use between 1988 and
2403 1995 when it was made obsolete by the PCI bus.
2405 Say Y here if you are building a kernel for an EISA-based machine.
2409 source "drivers/eisa/Kconfig"
2412 bool "TURBOchannel support"
2413 depends on MACH_DECSTATION
2415 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2416 processors. TURBOchannel programming specifications are available
2418 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2420 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2421 Linux driver support status is documented at:
2422 <http://www.linux-mips.org/wiki/DECstation>
2432 select MIPS_EXTERNAL_TIMER
2440 source "drivers/pcmcia/Kconfig"
2442 source "drivers/pci/hotplug/Kconfig"
2445 bool "RapidIO support"
2449 If you say Y here, the kernel will include drivers and
2450 infrastructure code to support RapidIO interconnect devices.
2452 source "drivers/rapidio/Kconfig"
2456 menu "Executable file formats"
2458 source "fs/Kconfig.binfmt"
2463 config MIPS32_COMPAT
2464 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2467 Select this option if you want Linux/MIPS 32-bit binary
2468 compatibility. Since all software available for Linux/MIPS is
2469 currently 32-bit you should say Y here.
2473 depends on MIPS32_COMPAT
2474 select ARCH_WANT_OLD_COMPAT_IPC
2477 config SYSVIPC_COMPAT
2479 depends on COMPAT && SYSVIPC
2483 bool "Kernel support for o32 binaries"
2484 depends on MIPS32_COMPAT
2486 Select this option if you want to run o32 binaries. These are pure
2487 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2488 existing binaries are in this format.
2493 bool "Kernel support for n32 binaries"
2494 depends on MIPS32_COMPAT
2496 Select this option if you want to run n32 binaries. These are
2497 64-bit binaries using 32-bit quantities for addressing and certain
2498 data that would normally be 64-bit. They are used in special
2505 default y if MIPS32_O32 || MIPS32_N32
2509 menu "Power management options"
2511 config ARCH_HIBERNATION_POSSIBLE
2513 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2515 config ARCH_SUSPEND_POSSIBLE
2517 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2519 source "kernel/power/Kconfig"
2523 config MIPS_EXTERNAL_TIMER
2526 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2527 menu "CPU Power Management"
2528 source "drivers/cpufreq/Kconfig"
2532 source "net/Kconfig"
2534 source "drivers/Kconfig"
2536 source "drivers/firmware/Kconfig"
2540 source "arch/mips/Kconfig.debug"
2542 source "security/Kconfig"
2544 source "crypto/Kconfig"
2546 source "lib/Kconfig"
2548 source "arch/mips/kvm/Kconfig"