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.
1383 bool "Broadcom BMIPS"
1384 depends on SYS_HAS_CPU_BMIPS
1386 select CPU_BMIPS3300 if SYS_HAS_CPU_BMIPS3300
1387 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1388 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1389 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1390 select CPU_SUPPORTS_32BIT_KERNEL
1391 select DMA_NONCOHERENT
1393 select SWAP_IO_SPACE
1394 select WEAK_ORDERING
1395 select CPU_SUPPORTS_HIGHMEM
1397 Support for BMIPS3300/4350/4380 and BMIPS5000 processors.
1400 bool "Netlogic XLR SoC"
1401 depends on SYS_HAS_CPU_XLR
1402 select CPU_SUPPORTS_32BIT_KERNEL
1403 select CPU_SUPPORTS_64BIT_KERNEL
1404 select CPU_SUPPORTS_HIGHMEM
1405 select CPU_SUPPORTS_HUGEPAGES
1406 select WEAK_ORDERING
1407 select WEAK_REORDERING_BEYOND_LLSC
1409 Netlogic Microsystems XLR/XLS processors.
1412 bool "Netlogic XLP SoC"
1413 depends on SYS_HAS_CPU_XLP
1414 select CPU_SUPPORTS_32BIT_KERNEL
1415 select CPU_SUPPORTS_64BIT_KERNEL
1416 select CPU_SUPPORTS_HIGHMEM
1417 select WEAK_ORDERING
1418 select WEAK_REORDERING_BEYOND_LLSC
1419 select CPU_HAS_PREFETCH
1422 Netlogic Microsystems XLP processors.
1426 config CPU_NOP_WORKAROUNDS
1429 config CPU_JUMP_WORKAROUNDS
1432 config CPU_LOONGSON2F_WORKAROUNDS
1433 bool "Loongson 2F Workarounds"
1435 select CPU_NOP_WORKAROUNDS
1436 select CPU_JUMP_WORKAROUNDS
1438 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1439 require workarounds. Without workarounds the system may hang
1440 unexpectedly. For more information please refer to the gas
1441 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1443 Loongson 2F03 and later have fixed these issues and no workarounds
1444 are needed. The workarounds have no significant side effect on them
1445 but may decrease the performance of the system so this option should
1446 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1449 If unsure, please say Y.
1450 endif # CPU_LOONGSON2F
1452 config SYS_SUPPORTS_ZBOOT
1454 select HAVE_KERNEL_GZIP
1455 select HAVE_KERNEL_BZIP2
1456 select HAVE_KERNEL_LZ4
1457 select HAVE_KERNEL_LZMA
1458 select HAVE_KERNEL_LZO
1459 select HAVE_KERNEL_XZ
1461 config SYS_SUPPORTS_ZBOOT_UART16550
1463 select SYS_SUPPORTS_ZBOOT
1465 config CPU_LOONGSON2
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_HUGEPAGES
1472 config CPU_LOONGSON1
1476 select CPU_HAS_PREFETCH
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_HIGHMEM
1480 config CPU_BMIPS3300
1483 config CPU_BMIPS4350
1485 select SYS_SUPPORTS_SMP
1486 select SYS_SUPPORTS_HOTPLUG_CPU
1488 config CPU_BMIPS4380
1490 select SYS_SUPPORTS_SMP
1491 select SYS_SUPPORTS_HOTPLUG_CPU
1493 config CPU_BMIPS5000
1495 select MIPS_CPU_SCACHE
1496 select SYS_SUPPORTS_SMP
1497 select SYS_SUPPORTS_HOTPLUG_CPU
1499 config SYS_HAS_CPU_LOONGSON2E
1502 config SYS_HAS_CPU_LOONGSON2F
1504 select CPU_SUPPORTS_CPUFREQ
1505 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1506 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1508 config SYS_HAS_CPU_LOONGSON1B
1511 config SYS_HAS_CPU_MIPS32_R1
1514 config SYS_HAS_CPU_MIPS32_R2
1517 config SYS_HAS_CPU_MIPS64_R1
1520 config SYS_HAS_CPU_MIPS64_R2
1523 config SYS_HAS_CPU_R3000
1526 config SYS_HAS_CPU_TX39XX
1529 config SYS_HAS_CPU_VR41XX
1532 config SYS_HAS_CPU_R4300
1535 config SYS_HAS_CPU_R4X00
1538 config SYS_HAS_CPU_TX49XX
1541 config SYS_HAS_CPU_R5000
1544 config SYS_HAS_CPU_R5432
1547 config SYS_HAS_CPU_R5500
1550 config SYS_HAS_CPU_R6000
1553 config SYS_HAS_CPU_NEVADA
1556 config SYS_HAS_CPU_R8000
1559 config SYS_HAS_CPU_R10000
1562 config SYS_HAS_CPU_RM7000
1565 config SYS_HAS_CPU_SB1
1568 config SYS_HAS_CPU_CAVIUM_OCTEON
1571 config SYS_HAS_CPU_BMIPS
1574 config SYS_HAS_CPU_BMIPS3300
1576 select SYS_HAS_CPU_BMIPS
1578 config SYS_HAS_CPU_BMIPS4350
1580 select SYS_HAS_CPU_BMIPS
1582 config SYS_HAS_CPU_BMIPS4380
1584 select SYS_HAS_CPU_BMIPS
1586 config SYS_HAS_CPU_BMIPS5000
1588 select SYS_HAS_CPU_BMIPS
1590 config SYS_HAS_CPU_XLR
1593 config SYS_HAS_CPU_XLP
1597 # CPU may reorder R->R, R->W, W->R, W->W
1598 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1600 config WEAK_ORDERING
1604 # CPU may reorder reads and writes beyond LL/SC
1605 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1607 config WEAK_REORDERING_BEYOND_LLSC
1612 # These two indicate any level of the MIPS32 and MIPS64 architecture
1616 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1620 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1623 # These two indicate the revision of the architecture, either Release 1 or Release 2
1627 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1631 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1633 config SYS_SUPPORTS_32BIT_KERNEL
1635 config SYS_SUPPORTS_64BIT_KERNEL
1637 config CPU_SUPPORTS_32BIT_KERNEL
1639 config CPU_SUPPORTS_64BIT_KERNEL
1641 config CPU_SUPPORTS_CPUFREQ
1643 config CPU_SUPPORTS_ADDRWINCFG
1645 config CPU_SUPPORTS_HUGEPAGES
1647 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1649 config MIPS_PGD_C0_CONTEXT
1651 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1654 # Set to y for ptrace access to watch registers.
1656 config HARDWARE_WATCHPOINTS
1658 default y if CPU_MIPSR1 || CPU_MIPSR2
1663 prompt "Kernel code model"
1665 You should only select this option if you have a workload that
1666 actually benefits from 64-bit processing or if your machine has
1667 large memory. You will only be presented a single option in this
1668 menu if your system does not support both 32-bit and 64-bit kernels.
1671 bool "32-bit kernel"
1672 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1675 Select this option if you want to build a 32-bit kernel.
1677 bool "64-bit kernel"
1678 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1680 Select this option if you want to build a 64-bit kernel.
1685 bool "KVM Guest Kernel"
1686 depends on BROKEN_ON_SMP
1688 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1690 config KVM_HOST_FREQ
1691 int "KVM Host Processor Frequency (MHz)"
1692 depends on KVM_GUEST
1695 Select this option if building a guest kernel for KVM to skip
1696 RTC emulation when determining guest CPU Frequency. Instead, the guest
1697 processor frequency is automatically derived from the host frequency.
1700 prompt "Kernel page size"
1701 default PAGE_SIZE_4KB
1703 config PAGE_SIZE_4KB
1705 depends on !CPU_LOONGSON2
1707 This option select the standard 4kB Linux page size. On some
1708 R3000-family processors this is the only available page size. Using
1709 4kB page size will minimize memory consumption and is therefore
1710 recommended for low memory systems.
1712 config PAGE_SIZE_8KB
1714 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1716 Using 8kB page size will result in higher performance kernel at
1717 the price of higher memory consumption. This option is available
1718 only on R8000 and cnMIPS processors. Note that you will need a
1719 suitable Linux distribution to support this.
1721 config PAGE_SIZE_16KB
1723 depends on !CPU_R3000 && !CPU_TX39XX
1725 Using 16kB page size will result in higher performance kernel at
1726 the price of higher memory consumption. This option is available on
1727 all non-R3000 family processors. Note that you will need a suitable
1728 Linux distribution to support this.
1730 config PAGE_SIZE_32KB
1732 depends on CPU_CAVIUM_OCTEON
1734 Using 32kB page size will result in higher performance kernel at
1735 the price of higher memory consumption. This option is available
1736 only on cnMIPS cores. Note that you will need a suitable Linux
1737 distribution to support this.
1739 config PAGE_SIZE_64KB
1741 depends on !CPU_R3000 && !CPU_TX39XX
1743 Using 64kB page size will result in higher performance kernel at
1744 the price of higher memory consumption. This option is available on
1745 all non-R3000 family processor. Not that at the time of this
1746 writing this option is still high experimental.
1750 config FORCE_MAX_ZONEORDER
1751 int "Maximum zone order"
1752 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1753 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1754 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1755 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1756 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1757 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1761 The kernel memory allocator divides physically contiguous memory
1762 blocks into "zones", where each zone is a power of two number of
1763 pages. This option selects the largest power of two that the kernel
1764 keeps in the memory allocator. If you need to allocate very large
1765 blocks of physically contiguous memory, then you may need to
1766 increase this value.
1768 This config option is actually maximum order plus one. For example,
1769 a value of 11 means that the largest free memory block is 2^10 pages.
1771 The page size is not necessarily 4KB. Keep this in mind
1772 when choosing a value for this option.
1775 bool "Use GIC global counter for clock events"
1776 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1778 Use the GIC global counter for the clock events. The R4K clock
1779 event driver is always present, so if the platform ends up not
1780 detecting a GIC, it will fall back to the R4K timer for the
1781 generation of clock events.
1786 config IP22_CPU_SCACHE
1791 # Support for a MIPS32 / MIPS64 style S-caches
1793 config MIPS_CPU_SCACHE
1797 config R5000_CPU_SCACHE
1801 config RM7000_CPU_SCACHE
1805 config SIBYTE_DMA_PAGEOPS
1806 bool "Use DMA to clear/copy pages"
1809 Instead of using the CPU to zero and copy pages, use a Data Mover
1810 channel. These DMA channels are otherwise unused by the standard
1811 SiByte Linux port. Seems to give a small performance benefit.
1813 config CPU_HAS_PREFETCH
1816 config CPU_GENERIC_DUMP_TLB
1818 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1822 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1824 config CPU_R4K_CACHE_TLB
1826 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1829 prompt "MIPS MT options"
1831 config MIPS_MT_DISABLED
1832 bool "Disable multithreading support."
1834 Use this option if your workload can't take advantage of
1835 MIPS hardware multithreading support. On systems that don't have
1836 the option of an MT-enabled processor this option will be the only
1837 option in this menu.
1840 bool "Use 1 TC on each available VPE for SMP"
1841 depends on SYS_SUPPORTS_MULTITHREADING
1842 select CPU_MIPSR2_IRQ_VI
1843 select CPU_MIPSR2_IRQ_EI
1846 select SYS_SUPPORTS_SCHED_SMT if SMP
1847 select SYS_SUPPORTS_SMP
1849 select MIPS_PERF_SHARED_TC_COUNTERS
1851 This is a kernel model which is known a VSMP but lately has been
1852 marketesed into SMVP.
1853 Virtual SMP uses the processor's VPEs to implement virtual
1854 processors. In currently available configuration of the 34K processor
1855 this allows for a dual processor. Both processors will share the same
1856 primary caches; each will obtain the half of the TLB for it's own
1857 exclusive use. For a layman this model can be described as similar to
1858 what Intel calls Hyperthreading.
1860 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1863 bool "SMTC: Use all TCs on all VPEs for SMP"
1864 depends on CPU_MIPS32_R2
1865 #depends on CPU_MIPS64_R2 # once there is hardware ...
1866 depends on SYS_SUPPORTS_MULTITHREADING
1867 select CPU_MIPSR2_IRQ_VI
1868 select CPU_MIPSR2_IRQ_EI
1870 select NR_CPUS_DEFAULT_8
1872 select SYS_SUPPORTS_SMP
1875 This is a kernel model which is known a SMTC or lately has been
1876 marketesed into SMVP.
1877 is presenting the available TC's of the core as processors to Linux.
1878 On currently available 34K processors this means a Linux system will
1879 see up to 5 processors. The implementation of the SMTC kernel differs
1880 significantly from VSMP and cannot efficiently coexist in the same
1881 kernel binary so the choice between VSMP and SMTC is a compile time
1884 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1892 bool "SMT (multithreading) scheduler support"
1893 depends on SYS_SUPPORTS_SCHED_SMT
1896 SMT scheduler support improves the CPU scheduler's decision making
1897 when dealing with MIPS MT enabled cores at a cost of slightly
1898 increased overhead in some places. If unsure say N here.
1900 config SYS_SUPPORTS_SCHED_SMT
1903 config SYS_SUPPORTS_MULTITHREADING
1906 config MIPS_MT_FPAFF
1907 bool "Dynamic FPU affinity for FP-intensive threads"
1909 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1911 config MIPS_VPE_LOADER
1912 bool "VPE loader support."
1913 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1914 select CPU_MIPSR2_IRQ_VI
1915 select CPU_MIPSR2_IRQ_EI
1918 Includes a loader for loading an elf relocatable object
1919 onto another VPE and running it.
1921 config MIPS_MT_SMTC_IM_BACKSTOP
1922 bool "Use per-TC register bits as backstop for inhibited IM bits"
1923 depends on MIPS_MT_SMTC
1926 To support multiple TC microthreads acting as "CPUs" within
1927 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1928 during interrupt handling. To support legacy drivers and interrupt
1929 controller management code, SMTC has a "backstop" to track and
1930 if necessary restore the interrupt mask. This has some performance
1931 impact on interrupt service overhead.
1933 config MIPS_MT_SMTC_IRQAFF
1934 bool "Support IRQ affinity API"
1935 depends on MIPS_MT_SMTC
1938 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1939 for SMTC Linux kernel. Requires platform support, of which
1940 an example can be found in the MIPS kernel i8259 and Malta
1941 platform code. Adds some overhead to interrupt dispatch, and
1942 should be used only if you know what you are doing.
1944 config MIPS_VPE_LOADER_TOM
1945 bool "Load VPE program into memory hidden from linux"
1946 depends on MIPS_VPE_LOADER
1949 The loader can use memory that is present but has been hidden from
1950 Linux using the kernel command line option "mem=xxMB". It's up to
1951 you to ensure the amount you put in the option and the space your
1952 program requires is less or equal to the amount physically present.
1954 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1955 config MIPS_VPE_APSP_API
1956 bool "Enable support for AP/SP API (RTLX)"
1957 depends on MIPS_VPE_LOADER
1961 bool "MIPS CMP framework support"
1962 depends on SYS_SUPPORTS_MIPS_CMP
1965 select SYS_SUPPORTS_SMP
1966 select SYS_SUPPORTS_SCHED_SMT if SMP
1967 select WEAK_ORDERING
1970 This is a placeholder option for the GCMP work. It will need to
1971 be handled differently...
1973 config SB1_PASS_1_WORKAROUNDS
1975 depends on CPU_SB1_PASS_1
1978 config SB1_PASS_2_WORKAROUNDS
1980 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1983 config SB1_PASS_2_1_WORKAROUNDS
1985 depends on CPU_SB1 && CPU_SB1_PASS_2
1989 config 64BIT_PHYS_ADDR
1992 config ARCH_PHYS_ADDR_T_64BIT
1993 def_bool 64BIT_PHYS_ADDR
1995 config CPU_HAS_SMARTMIPS
1996 depends on SYS_SUPPORTS_SMARTMIPS
1997 bool "Support for the SmartMIPS ASE"
1999 SmartMIPS is a extension of the MIPS32 architecture aimed at
2000 increased security at both hardware and software level for
2001 smartcards. Enabling this option will allow proper use of the
2002 SmartMIPS instructions by Linux applications. However a kernel with
2003 this option will not work on a MIPS core without SmartMIPS core. If
2004 you don't know you probably don't have SmartMIPS and should say N
2007 config CPU_MICROMIPS
2008 depends on SYS_SUPPORTS_MICROMIPS
2009 bool "Build kernel using microMIPS ISA"
2011 When this option is enabled the kernel will be built using the
2021 # Vectored interrupt mode is an R2 feature
2023 config CPU_MIPSR2_IRQ_VI
2027 # Extended interrupt mode is an R2 feature
2029 config CPU_MIPSR2_IRQ_EI
2034 depends on !CPU_R3000
2040 config CPU_DADDI_WORKAROUNDS
2043 config CPU_R4000_WORKAROUNDS
2045 select CPU_R4400_WORKAROUNDS
2047 config CPU_R4400_WORKAROUNDS
2051 # - Highmem only makes sense for the 32-bit kernel.
2052 # - The current highmem code will only work properly on physically indexed
2053 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2054 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2055 # moment we protect the user and offer the highmem option only on machines
2056 # where it's known to be safe. This will not offer highmem on a few systems
2057 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2058 # indexed CPUs but we're playing safe.
2059 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2060 # know they might have memory configurations that could make use of highmem
2064 bool "High Memory Support"
2065 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2067 config CPU_SUPPORTS_HIGHMEM
2070 config SYS_SUPPORTS_HIGHMEM
2073 config SYS_SUPPORTS_SMARTMIPS
2076 config SYS_SUPPORTS_MICROMIPS
2079 config ARCH_FLATMEM_ENABLE
2081 depends on !NUMA && !CPU_LOONGSON2
2083 config ARCH_DISCONTIGMEM_ENABLE
2085 default y if SGI_IP27
2087 Say Y to support efficient handling of discontiguous physical memory,
2088 for architectures which are either NUMA (Non-Uniform Memory Access)
2089 or have huge holes in the physical address space for other reasons.
2090 See <file:Documentation/vm/numa> for more.
2092 config ARCH_SPARSEMEM_ENABLE
2094 select SPARSEMEM_STATIC
2098 depends on SYS_SUPPORTS_NUMA
2100 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2101 Access). This option improves performance on systems with more
2102 than two nodes; on two node systems it is generally better to
2103 leave it disabled; on single node systems disable this option
2106 config SYS_SUPPORTS_NUMA
2112 depends on NEED_MULTIPLE_NODES
2114 config HW_PERF_EVENTS
2115 bool "Enable hardware performance counter support for perf events"
2116 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2119 Enable hardware performance counter support for perf events. If
2120 disabled, perf events will use software events only.
2125 bool "Multi-Processing support"
2126 depends on SYS_SUPPORTS_SMP
2128 This enables support for systems with more than one CPU. If you have
2129 a system with only one CPU, like most personal computers, say N. If
2130 you have a system with more than one CPU, say Y.
2132 If you say N here, the kernel will run on single and multiprocessor
2133 machines, but will use only one CPU of a multiprocessor machine. If
2134 you say Y here, the kernel will run on many, but not all,
2135 singleprocessor machines. On a singleprocessor machine, the kernel
2136 will run faster if you say N here.
2138 People using multiprocessor machines who say Y here should also say
2139 Y to "Enhanced Real Time Clock Support", below.
2141 See also the SMP-HOWTO available at
2142 <http://www.tldp.org/docs.html#howto>.
2144 If you don't know what to do here, say N.
2149 config SYS_SUPPORTS_MIPS_CMP
2152 config SYS_SUPPORTS_SMP
2155 config NR_CPUS_DEFAULT_4
2158 config NR_CPUS_DEFAULT_8
2161 config NR_CPUS_DEFAULT_16
2164 config NR_CPUS_DEFAULT_32
2167 config NR_CPUS_DEFAULT_64
2171 int "Maximum number of CPUs (2-64)"
2174 default "4" if NR_CPUS_DEFAULT_4
2175 default "8" if NR_CPUS_DEFAULT_8
2176 default "16" if NR_CPUS_DEFAULT_16
2177 default "32" if NR_CPUS_DEFAULT_32
2178 default "64" if NR_CPUS_DEFAULT_64
2180 This allows you to specify the maximum number of CPUs which this
2181 kernel will support. The maximum supported value is 32 for 32-bit
2182 kernel and 64 for 64-bit kernels; the minimum value which makes
2183 sense is 1 for Qemu (useful only for kernel debugging purposes)
2184 and 2 for all others.
2186 This is purely to save memory - each supported CPU adds
2187 approximately eight kilobytes to the kernel image. For best
2188 performance should round up your number of processors to the next
2191 config MIPS_PERF_SHARED_TC_COUNTERS
2195 # Timer Interrupt Frequency Configuration
2199 prompt "Timer frequency"
2202 Allows the configuration of the timer frequency.
2205 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2208 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2211 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2214 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2217 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2220 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2223 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2227 config SYS_SUPPORTS_48HZ
2230 config SYS_SUPPORTS_100HZ
2233 config SYS_SUPPORTS_128HZ
2236 config SYS_SUPPORTS_250HZ
2239 config SYS_SUPPORTS_256HZ
2242 config SYS_SUPPORTS_1000HZ
2245 config SYS_SUPPORTS_1024HZ
2248 config SYS_SUPPORTS_ARBIT_HZ
2250 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2251 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2252 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2253 !SYS_SUPPORTS_1024HZ
2258 default 100 if HZ_100
2259 default 128 if HZ_128
2260 default 250 if HZ_250
2261 default 256 if HZ_256
2262 default 1000 if HZ_1000
2263 default 1024 if HZ_1024
2265 source "kernel/Kconfig.preempt"
2268 bool "Kexec system call"
2270 kexec is a system call that implements the ability to shutdown your
2271 current kernel, and to start another kernel. It is like a reboot
2272 but it is independent of the system firmware. And like a reboot
2273 you can start any kernel with it, not just Linux.
2275 The name comes from the similarity to the exec system call.
2277 It is an ongoing process to be certain the hardware in a machine
2278 is properly shutdown, so do not be surprised if this code does not
2279 initially work for you. As of this writing the exact hardware
2280 interface is strongly in flux, so no good recommendation can be
2284 bool "Kernel crash dumps"
2286 Generate crash dump after being started by kexec.
2287 This should be normally only set in special crash dump kernels
2288 which are loaded in the main kernel with kexec-tools into
2289 a specially reserved region and then later executed after
2290 a crash by kdump/kexec. The crash dump kernel must be compiled
2291 to a memory address not used by the main kernel or firmware using
2294 config PHYSICAL_START
2295 hex "Physical address where the kernel is loaded"
2296 default "0xffffffff84000000" if 64BIT
2297 default "0x84000000" if 32BIT
2298 depends on CRASH_DUMP
2300 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2301 If you plan to use kernel for capturing the crash dump change
2302 this value to start of the reserved region (the "X" value as
2303 specified in the "crashkernel=YM@XM" command line boot parameter
2304 passed to the panic-ed kernel).
2307 bool "Enable seccomp to safely compute untrusted bytecode"
2311 This kernel feature is useful for number crunching applications
2312 that may need to compute untrusted bytecode during their
2313 execution. By using pipes or other transports made available to
2314 the process as file descriptors supporting the read/write
2315 syscalls, it's possible to isolate those applications in
2316 their own address space using seccomp. Once seccomp is
2317 enabled via /proc/<pid>/seccomp, it cannot be disabled
2318 and the task is only allowed to execute a few safe syscalls
2319 defined by each seccomp mode.
2321 If unsure, say Y. Only embedded should say N here.
2323 config CC_STACKPROTECTOR
2324 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2326 This option turns on the -fstack-protector GCC feature. This
2327 feature puts, at the beginning of functions, a canary value on
2328 the stack just before the return address, and validates
2329 the value just before actually returning. Stack based buffer
2330 overflows (that need to overwrite this return address) now also
2331 overwrite the canary, which gets detected and the attack is then
2332 neutralized via a kernel panic.
2334 This feature requires gcc version 4.2 or above.
2336 config MIPS_O32_FP64_SUPPORT
2337 bool "Support for O32 binaries using 64-bit FP"
2338 depends on 32BIT || MIPS32_O32
2341 When this is enabled, the kernel will support use of 64-bit floating
2342 point registers with binaries using the O32 ABI along with the
2343 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2344 32-bit MIPS systems this support is at the cost of increasing the
2345 size and complexity of the compiled FPU emulator. Thus if you are
2346 running a MIPS32 system and know that none of your userland binaries
2347 will require 64-bit floating point, you may wish to reduce the size
2348 of your kernel & potentially improve FP emulation performance by
2356 select OF_EARLY_FLATTREE
2361 config LOCKDEP_SUPPORT
2365 config STACKTRACE_SUPPORT
2369 source "init/Kconfig"
2371 source "kernel/Kconfig.freezer"
2373 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2381 bool "Support for PCI controller"
2382 depends on HW_HAS_PCI
2384 select NO_GENERIC_PCI_IOPORT_MAP
2386 Find out whether you have a PCI motherboard. PCI is the name of a
2387 bus system, i.e. the way the CPU talks to the other stuff inside
2388 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2394 source "drivers/pci/Kconfig"
2396 source "drivers/pci/pcie/Kconfig"
2399 # ISA support is now enabled via select. Too many systems still have the one
2400 # or other ISA chip on the board that users don't know about so don't expect
2401 # users to choose the right thing ...
2408 depends on HW_HAS_EISA
2410 select GENERIC_ISA_DMA
2412 The Extended Industry Standard Architecture (EISA) bus was
2413 developed as an open alternative to the IBM MicroChannel bus.
2415 The EISA bus provided some of the features of the IBM MicroChannel
2416 bus while maintaining backward compatibility with cards made for
2417 the older ISA bus. The EISA bus saw limited use between 1988 and
2418 1995 when it was made obsolete by the PCI bus.
2420 Say Y here if you are building a kernel for an EISA-based machine.
2424 source "drivers/eisa/Kconfig"
2427 bool "TURBOchannel support"
2428 depends on MACH_DECSTATION
2430 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2431 processors. TURBOchannel programming specifications are available
2433 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2435 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2436 Linux driver support status is documented at:
2437 <http://www.linux-mips.org/wiki/DECstation>
2447 select MIPS_EXTERNAL_TIMER
2455 source "drivers/pcmcia/Kconfig"
2457 source "drivers/pci/hotplug/Kconfig"
2460 bool "RapidIO support"
2464 If you say Y here, the kernel will include drivers and
2465 infrastructure code to support RapidIO interconnect devices.
2467 source "drivers/rapidio/Kconfig"
2471 menu "Executable file formats"
2473 source "fs/Kconfig.binfmt"
2478 config MIPS32_COMPAT
2479 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2482 Select this option if you want Linux/MIPS 32-bit binary
2483 compatibility. Since all software available for Linux/MIPS is
2484 currently 32-bit you should say Y here.
2488 depends on MIPS32_COMPAT
2489 select ARCH_WANT_OLD_COMPAT_IPC
2492 config SYSVIPC_COMPAT
2494 depends on COMPAT && SYSVIPC
2498 bool "Kernel support for o32 binaries"
2499 depends on MIPS32_COMPAT
2501 Select this option if you want to run o32 binaries. These are pure
2502 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2503 existing binaries are in this format.
2508 bool "Kernel support for n32 binaries"
2509 depends on MIPS32_COMPAT
2511 Select this option if you want to run n32 binaries. These are
2512 64-bit binaries using 32-bit quantities for addressing and certain
2513 data that would normally be 64-bit. They are used in special
2520 default y if MIPS32_O32 || MIPS32_N32
2524 menu "Power management options"
2526 config ARCH_HIBERNATION_POSSIBLE
2528 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2530 config ARCH_SUSPEND_POSSIBLE
2532 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2534 source "kernel/power/Kconfig"
2538 config MIPS_EXTERNAL_TIMER
2541 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2542 menu "CPU Power Management"
2543 source "drivers/cpufreq/Kconfig"
2547 source "net/Kconfig"
2549 source "drivers/Kconfig"
2551 source "drivers/firmware/Kconfig"
2555 source "arch/mips/Kconfig.debug"
2557 source "security/Kconfig"
2559 source "crypto/Kconfig"
2561 source "lib/Kconfig"
2563 source "arch/mips/kvm/Kconfig"