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
1396 select CPU_HAS_PREFETCH
1398 Support for BMIPS3300/4350/4380 and BMIPS5000 processors.
1401 bool "Netlogic XLR SoC"
1402 depends on SYS_HAS_CPU_XLR
1403 select CPU_SUPPORTS_32BIT_KERNEL
1404 select CPU_SUPPORTS_64BIT_KERNEL
1405 select CPU_SUPPORTS_HIGHMEM
1406 select CPU_SUPPORTS_HUGEPAGES
1407 select WEAK_ORDERING
1408 select WEAK_REORDERING_BEYOND_LLSC
1410 Netlogic Microsystems XLR/XLS processors.
1413 bool "Netlogic XLP SoC"
1414 depends on SYS_HAS_CPU_XLP
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select CPU_SUPPORTS_64BIT_KERNEL
1417 select CPU_SUPPORTS_HIGHMEM
1418 select WEAK_ORDERING
1419 select WEAK_REORDERING_BEYOND_LLSC
1420 select CPU_HAS_PREFETCH
1423 Netlogic Microsystems XLP processors.
1427 config CPU_NOP_WORKAROUNDS
1430 config CPU_JUMP_WORKAROUNDS
1433 config CPU_LOONGSON2F_WORKAROUNDS
1434 bool "Loongson 2F Workarounds"
1436 select CPU_NOP_WORKAROUNDS
1437 select CPU_JUMP_WORKAROUNDS
1439 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1440 require workarounds. Without workarounds the system may hang
1441 unexpectedly. For more information please refer to the gas
1442 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1444 Loongson 2F03 and later have fixed these issues and no workarounds
1445 are needed. The workarounds have no significant side effect on them
1446 but may decrease the performance of the system so this option should
1447 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1450 If unsure, please say Y.
1451 endif # CPU_LOONGSON2F
1453 config SYS_SUPPORTS_ZBOOT
1455 select HAVE_KERNEL_GZIP
1456 select HAVE_KERNEL_BZIP2
1457 select HAVE_KERNEL_LZ4
1458 select HAVE_KERNEL_LZMA
1459 select HAVE_KERNEL_LZO
1460 select HAVE_KERNEL_XZ
1462 config SYS_SUPPORTS_ZBOOT_UART16550
1464 select SYS_SUPPORTS_ZBOOT
1466 config CPU_LOONGSON2
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_64BIT_KERNEL
1470 select CPU_SUPPORTS_HIGHMEM
1471 select CPU_SUPPORTS_HUGEPAGES
1473 config CPU_LOONGSON1
1477 select CPU_HAS_PREFETCH
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_HIGHMEM
1481 config CPU_BMIPS3300
1484 config CPU_BMIPS4350
1486 select SYS_SUPPORTS_SMP
1487 select SYS_SUPPORTS_HOTPLUG_CPU
1489 config CPU_BMIPS4380
1491 select SYS_SUPPORTS_SMP
1492 select SYS_SUPPORTS_HOTPLUG_CPU
1494 config CPU_BMIPS5000
1496 select MIPS_CPU_SCACHE
1497 select SYS_SUPPORTS_SMP
1498 select SYS_SUPPORTS_HOTPLUG_CPU
1500 config SYS_HAS_CPU_LOONGSON2E
1503 config SYS_HAS_CPU_LOONGSON2F
1505 select CPU_SUPPORTS_CPUFREQ
1506 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1507 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1509 config SYS_HAS_CPU_LOONGSON1B
1512 config SYS_HAS_CPU_MIPS32_R1
1515 config SYS_HAS_CPU_MIPS32_R2
1518 config SYS_HAS_CPU_MIPS64_R1
1521 config SYS_HAS_CPU_MIPS64_R2
1524 config SYS_HAS_CPU_R3000
1527 config SYS_HAS_CPU_TX39XX
1530 config SYS_HAS_CPU_VR41XX
1533 config SYS_HAS_CPU_R4300
1536 config SYS_HAS_CPU_R4X00
1539 config SYS_HAS_CPU_TX49XX
1542 config SYS_HAS_CPU_R5000
1545 config SYS_HAS_CPU_R5432
1548 config SYS_HAS_CPU_R5500
1551 config SYS_HAS_CPU_R6000
1554 config SYS_HAS_CPU_NEVADA
1557 config SYS_HAS_CPU_R8000
1560 config SYS_HAS_CPU_R10000
1563 config SYS_HAS_CPU_RM7000
1566 config SYS_HAS_CPU_SB1
1569 config SYS_HAS_CPU_CAVIUM_OCTEON
1572 config SYS_HAS_CPU_BMIPS
1575 config SYS_HAS_CPU_BMIPS3300
1577 select SYS_HAS_CPU_BMIPS
1579 config SYS_HAS_CPU_BMIPS4350
1581 select SYS_HAS_CPU_BMIPS
1583 config SYS_HAS_CPU_BMIPS4380
1585 select SYS_HAS_CPU_BMIPS
1587 config SYS_HAS_CPU_BMIPS5000
1589 select SYS_HAS_CPU_BMIPS
1591 config SYS_HAS_CPU_XLR
1594 config SYS_HAS_CPU_XLP
1598 # CPU may reorder R->R, R->W, W->R, W->W
1599 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1601 config WEAK_ORDERING
1605 # CPU may reorder reads and writes beyond LL/SC
1606 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1608 config WEAK_REORDERING_BEYOND_LLSC
1613 # These two indicate any level of the MIPS32 and MIPS64 architecture
1617 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1621 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1624 # These two indicate the revision of the architecture, either Release 1 or Release 2
1628 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1632 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1634 config SYS_SUPPORTS_32BIT_KERNEL
1636 config SYS_SUPPORTS_64BIT_KERNEL
1638 config CPU_SUPPORTS_32BIT_KERNEL
1640 config CPU_SUPPORTS_64BIT_KERNEL
1642 config CPU_SUPPORTS_CPUFREQ
1644 config CPU_SUPPORTS_ADDRWINCFG
1646 config CPU_SUPPORTS_HUGEPAGES
1648 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1650 config MIPS_PGD_C0_CONTEXT
1652 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1655 # Set to y for ptrace access to watch registers.
1657 config HARDWARE_WATCHPOINTS
1659 default y if CPU_MIPSR1 || CPU_MIPSR2
1664 prompt "Kernel code model"
1666 You should only select this option if you have a workload that
1667 actually benefits from 64-bit processing or if your machine has
1668 large memory. You will only be presented a single option in this
1669 menu if your system does not support both 32-bit and 64-bit kernels.
1672 bool "32-bit kernel"
1673 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1676 Select this option if you want to build a 32-bit kernel.
1678 bool "64-bit kernel"
1679 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1681 Select this option if you want to build a 64-bit kernel.
1686 bool "KVM Guest Kernel"
1687 depends on BROKEN_ON_SMP
1689 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1691 config KVM_HOST_FREQ
1692 int "KVM Host Processor Frequency (MHz)"
1693 depends on KVM_GUEST
1696 Select this option if building a guest kernel for KVM to skip
1697 RTC emulation when determining guest CPU Frequency. Instead, the guest
1698 processor frequency is automatically derived from the host frequency.
1701 prompt "Kernel page size"
1702 default PAGE_SIZE_4KB
1704 config PAGE_SIZE_4KB
1706 depends on !CPU_LOONGSON2
1708 This option select the standard 4kB Linux page size. On some
1709 R3000-family processors this is the only available page size. Using
1710 4kB page size will minimize memory consumption and is therefore
1711 recommended for low memory systems.
1713 config PAGE_SIZE_8KB
1715 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1717 Using 8kB page size will result in higher performance kernel at
1718 the price of higher memory consumption. This option is available
1719 only on R8000 and cnMIPS processors. Note that you will need a
1720 suitable Linux distribution to support this.
1722 config PAGE_SIZE_16KB
1724 depends on !CPU_R3000 && !CPU_TX39XX
1726 Using 16kB page size will result in higher performance kernel at
1727 the price of higher memory consumption. This option is available on
1728 all non-R3000 family processors. Note that you will need a suitable
1729 Linux distribution to support this.
1731 config PAGE_SIZE_32KB
1733 depends on CPU_CAVIUM_OCTEON
1735 Using 32kB page size will result in higher performance kernel at
1736 the price of higher memory consumption. This option is available
1737 only on cnMIPS cores. Note that you will need a suitable Linux
1738 distribution to support this.
1740 config PAGE_SIZE_64KB
1742 depends on !CPU_R3000 && !CPU_TX39XX
1744 Using 64kB page size will result in higher performance kernel at
1745 the price of higher memory consumption. This option is available on
1746 all non-R3000 family processor. Not that at the time of this
1747 writing this option is still high experimental.
1751 config FORCE_MAX_ZONEORDER
1752 int "Maximum zone order"
1753 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1754 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1755 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1756 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1757 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1758 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1762 The kernel memory allocator divides physically contiguous memory
1763 blocks into "zones", where each zone is a power of two number of
1764 pages. This option selects the largest power of two that the kernel
1765 keeps in the memory allocator. If you need to allocate very large
1766 blocks of physically contiguous memory, then you may need to
1767 increase this value.
1769 This config option is actually maximum order plus one. For example,
1770 a value of 11 means that the largest free memory block is 2^10 pages.
1772 The page size is not necessarily 4KB. Keep this in mind
1773 when choosing a value for this option.
1776 bool "Use GIC global counter for clock events"
1777 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1779 Use the GIC global counter for the clock events. The R4K clock
1780 event driver is always present, so if the platform ends up not
1781 detecting a GIC, it will fall back to the R4K timer for the
1782 generation of clock events.
1787 config IP22_CPU_SCACHE
1792 # Support for a MIPS32 / MIPS64 style S-caches
1794 config MIPS_CPU_SCACHE
1798 config R5000_CPU_SCACHE
1802 config RM7000_CPU_SCACHE
1806 config SIBYTE_DMA_PAGEOPS
1807 bool "Use DMA to clear/copy pages"
1810 Instead of using the CPU to zero and copy pages, use a Data Mover
1811 channel. These DMA channels are otherwise unused by the standard
1812 SiByte Linux port. Seems to give a small performance benefit.
1814 config CPU_HAS_PREFETCH
1817 config CPU_GENERIC_DUMP_TLB
1819 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1823 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1825 config CPU_R4K_CACHE_TLB
1827 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1830 prompt "MIPS MT options"
1832 config MIPS_MT_DISABLED
1833 bool "Disable multithreading support."
1835 Use this option if your workload can't take advantage of
1836 MIPS hardware multithreading support. On systems that don't have
1837 the option of an MT-enabled processor this option will be the only
1838 option in this menu.
1841 bool "Use 1 TC on each available VPE for SMP"
1842 depends on SYS_SUPPORTS_MULTITHREADING
1843 select CPU_MIPSR2_IRQ_VI
1844 select CPU_MIPSR2_IRQ_EI
1847 select SYS_SUPPORTS_SCHED_SMT if SMP
1848 select SYS_SUPPORTS_SMP
1850 select MIPS_PERF_SHARED_TC_COUNTERS
1852 This is a kernel model which is known a VSMP but lately has been
1853 marketesed into SMVP.
1854 Virtual SMP uses the processor's VPEs to implement virtual
1855 processors. In currently available configuration of the 34K processor
1856 this allows for a dual processor. Both processors will share the same
1857 primary caches; each will obtain the half of the TLB for it's own
1858 exclusive use. For a layman this model can be described as similar to
1859 what Intel calls Hyperthreading.
1861 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1864 bool "SMTC: Use all TCs on all VPEs for SMP"
1865 depends on CPU_MIPS32_R2
1866 #depends on CPU_MIPS64_R2 # once there is hardware ...
1867 depends on SYS_SUPPORTS_MULTITHREADING
1868 select CPU_MIPSR2_IRQ_VI
1869 select CPU_MIPSR2_IRQ_EI
1871 select NR_CPUS_DEFAULT_8
1873 select SYS_SUPPORTS_SMP
1876 This is a kernel model which is known a SMTC or lately has been
1877 marketesed into SMVP.
1878 is presenting the available TC's of the core as processors to Linux.
1879 On currently available 34K processors this means a Linux system will
1880 see up to 5 processors. The implementation of the SMTC kernel differs
1881 significantly from VSMP and cannot efficiently coexist in the same
1882 kernel binary so the choice between VSMP and SMTC is a compile time
1885 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1893 bool "SMT (multithreading) scheduler support"
1894 depends on SYS_SUPPORTS_SCHED_SMT
1897 SMT scheduler support improves the CPU scheduler's decision making
1898 when dealing with MIPS MT enabled cores at a cost of slightly
1899 increased overhead in some places. If unsure say N here.
1901 config SYS_SUPPORTS_SCHED_SMT
1904 config SYS_SUPPORTS_MULTITHREADING
1907 config MIPS_MT_FPAFF
1908 bool "Dynamic FPU affinity for FP-intensive threads"
1910 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1912 config MIPS_VPE_LOADER
1913 bool "VPE loader support."
1914 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1915 select CPU_MIPSR2_IRQ_VI
1916 select CPU_MIPSR2_IRQ_EI
1919 Includes a loader for loading an elf relocatable object
1920 onto another VPE and running it.
1922 config MIPS_MT_SMTC_IM_BACKSTOP
1923 bool "Use per-TC register bits as backstop for inhibited IM bits"
1924 depends on MIPS_MT_SMTC
1927 To support multiple TC microthreads acting as "CPUs" within
1928 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1929 during interrupt handling. To support legacy drivers and interrupt
1930 controller management code, SMTC has a "backstop" to track and
1931 if necessary restore the interrupt mask. This has some performance
1932 impact on interrupt service overhead.
1934 config MIPS_MT_SMTC_IRQAFF
1935 bool "Support IRQ affinity API"
1936 depends on MIPS_MT_SMTC
1939 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1940 for SMTC Linux kernel. Requires platform support, of which
1941 an example can be found in the MIPS kernel i8259 and Malta
1942 platform code. Adds some overhead to interrupt dispatch, and
1943 should be used only if you know what you are doing.
1945 config MIPS_VPE_LOADER_TOM
1946 bool "Load VPE program into memory hidden from linux"
1947 depends on MIPS_VPE_LOADER
1950 The loader can use memory that is present but has been hidden from
1951 Linux using the kernel command line option "mem=xxMB". It's up to
1952 you to ensure the amount you put in the option and the space your
1953 program requires is less or equal to the amount physically present.
1955 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1956 config MIPS_VPE_APSP_API
1957 bool "Enable support for AP/SP API (RTLX)"
1958 depends on MIPS_VPE_LOADER
1962 bool "MIPS CMP framework support"
1963 depends on SYS_SUPPORTS_MIPS_CMP
1966 select SYS_SUPPORTS_SMP
1967 select SYS_SUPPORTS_SCHED_SMT if SMP
1968 select WEAK_ORDERING
1971 This is a placeholder option for the GCMP work. It will need to
1972 be handled differently...
1974 config SB1_PASS_1_WORKAROUNDS
1976 depends on CPU_SB1_PASS_1
1979 config SB1_PASS_2_WORKAROUNDS
1981 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1984 config SB1_PASS_2_1_WORKAROUNDS
1986 depends on CPU_SB1 && CPU_SB1_PASS_2
1990 config 64BIT_PHYS_ADDR
1993 config ARCH_PHYS_ADDR_T_64BIT
1994 def_bool 64BIT_PHYS_ADDR
1996 config CPU_HAS_SMARTMIPS
1997 depends on SYS_SUPPORTS_SMARTMIPS
1998 bool "Support for the SmartMIPS ASE"
2000 SmartMIPS is a extension of the MIPS32 architecture aimed at
2001 increased security at both hardware and software level for
2002 smartcards. Enabling this option will allow proper use of the
2003 SmartMIPS instructions by Linux applications. However a kernel with
2004 this option will not work on a MIPS core without SmartMIPS core. If
2005 you don't know you probably don't have SmartMIPS and should say N
2008 config CPU_MICROMIPS
2009 depends on SYS_SUPPORTS_MICROMIPS
2010 bool "Build kernel using microMIPS ISA"
2012 When this option is enabled the kernel will be built using the
2022 # Vectored interrupt mode is an R2 feature
2024 config CPU_MIPSR2_IRQ_VI
2028 # Extended interrupt mode is an R2 feature
2030 config CPU_MIPSR2_IRQ_EI
2035 depends on !CPU_R3000
2041 config CPU_DADDI_WORKAROUNDS
2044 config CPU_R4000_WORKAROUNDS
2046 select CPU_R4400_WORKAROUNDS
2048 config CPU_R4400_WORKAROUNDS
2052 # - Highmem only makes sense for the 32-bit kernel.
2053 # - The current highmem code will only work properly on physically indexed
2054 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2055 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2056 # moment we protect the user and offer the highmem option only on machines
2057 # where it's known to be safe. This will not offer highmem on a few systems
2058 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2059 # indexed CPUs but we're playing safe.
2060 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2061 # know they might have memory configurations that could make use of highmem
2065 bool "High Memory Support"
2066 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2068 config CPU_SUPPORTS_HIGHMEM
2071 config SYS_SUPPORTS_HIGHMEM
2074 config SYS_SUPPORTS_SMARTMIPS
2077 config SYS_SUPPORTS_MICROMIPS
2080 config ARCH_FLATMEM_ENABLE
2082 depends on !NUMA && !CPU_LOONGSON2
2084 config ARCH_DISCONTIGMEM_ENABLE
2086 default y if SGI_IP27
2088 Say Y to support efficient handling of discontiguous physical memory,
2089 for architectures which are either NUMA (Non-Uniform Memory Access)
2090 or have huge holes in the physical address space for other reasons.
2091 See <file:Documentation/vm/numa> for more.
2093 config ARCH_SPARSEMEM_ENABLE
2095 select SPARSEMEM_STATIC
2099 depends on SYS_SUPPORTS_NUMA
2101 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2102 Access). This option improves performance on systems with more
2103 than two nodes; on two node systems it is generally better to
2104 leave it disabled; on single node systems disable this option
2107 config SYS_SUPPORTS_NUMA
2113 depends on NEED_MULTIPLE_NODES
2115 config HW_PERF_EVENTS
2116 bool "Enable hardware performance counter support for perf events"
2117 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2120 Enable hardware performance counter support for perf events. If
2121 disabled, perf events will use software events only.
2126 bool "Multi-Processing support"
2127 depends on SYS_SUPPORTS_SMP
2129 This enables support for systems with more than one CPU. If you have
2130 a system with only one CPU, like most personal computers, say N. If
2131 you have a system with more than one CPU, say Y.
2133 If you say N here, the kernel will run on single and multiprocessor
2134 machines, but will use only one CPU of a multiprocessor machine. If
2135 you say Y here, the kernel will run on many, but not all,
2136 singleprocessor machines. On a singleprocessor machine, the kernel
2137 will run faster if you say N here.
2139 People using multiprocessor machines who say Y here should also say
2140 Y to "Enhanced Real Time Clock Support", below.
2142 See also the SMP-HOWTO available at
2143 <http://www.tldp.org/docs.html#howto>.
2145 If you don't know what to do here, say N.
2150 config SYS_SUPPORTS_MIPS_CMP
2153 config SYS_SUPPORTS_SMP
2156 config NR_CPUS_DEFAULT_4
2159 config NR_CPUS_DEFAULT_8
2162 config NR_CPUS_DEFAULT_16
2165 config NR_CPUS_DEFAULT_32
2168 config NR_CPUS_DEFAULT_64
2172 int "Maximum number of CPUs (2-64)"
2175 default "4" if NR_CPUS_DEFAULT_4
2176 default "8" if NR_CPUS_DEFAULT_8
2177 default "16" if NR_CPUS_DEFAULT_16
2178 default "32" if NR_CPUS_DEFAULT_32
2179 default "64" if NR_CPUS_DEFAULT_64
2181 This allows you to specify the maximum number of CPUs which this
2182 kernel will support. The maximum supported value is 32 for 32-bit
2183 kernel and 64 for 64-bit kernels; the minimum value which makes
2184 sense is 1 for Qemu (useful only for kernel debugging purposes)
2185 and 2 for all others.
2187 This is purely to save memory - each supported CPU adds
2188 approximately eight kilobytes to the kernel image. For best
2189 performance should round up your number of processors to the next
2192 config MIPS_PERF_SHARED_TC_COUNTERS
2196 # Timer Interrupt Frequency Configuration
2200 prompt "Timer frequency"
2203 Allows the configuration of the timer frequency.
2206 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2209 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2212 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2215 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2218 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2221 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2224 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2228 config SYS_SUPPORTS_48HZ
2231 config SYS_SUPPORTS_100HZ
2234 config SYS_SUPPORTS_128HZ
2237 config SYS_SUPPORTS_250HZ
2240 config SYS_SUPPORTS_256HZ
2243 config SYS_SUPPORTS_1000HZ
2246 config SYS_SUPPORTS_1024HZ
2249 config SYS_SUPPORTS_ARBIT_HZ
2251 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2252 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2253 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2254 !SYS_SUPPORTS_1024HZ
2259 default 100 if HZ_100
2260 default 128 if HZ_128
2261 default 250 if HZ_250
2262 default 256 if HZ_256
2263 default 1000 if HZ_1000
2264 default 1024 if HZ_1024
2266 source "kernel/Kconfig.preempt"
2269 bool "Kexec system call"
2271 kexec is a system call that implements the ability to shutdown your
2272 current kernel, and to start another kernel. It is like a reboot
2273 but it is independent of the system firmware. And like a reboot
2274 you can start any kernel with it, not just Linux.
2276 The name comes from the similarity to the exec system call.
2278 It is an ongoing process to be certain the hardware in a machine
2279 is properly shutdown, so do not be surprised if this code does not
2280 initially work for you. As of this writing the exact hardware
2281 interface is strongly in flux, so no good recommendation can be
2285 bool "Kernel crash dumps"
2287 Generate crash dump after being started by kexec.
2288 This should be normally only set in special crash dump kernels
2289 which are loaded in the main kernel with kexec-tools into
2290 a specially reserved region and then later executed after
2291 a crash by kdump/kexec. The crash dump kernel must be compiled
2292 to a memory address not used by the main kernel or firmware using
2295 config PHYSICAL_START
2296 hex "Physical address where the kernel is loaded"
2297 default "0xffffffff84000000" if 64BIT
2298 default "0x84000000" if 32BIT
2299 depends on CRASH_DUMP
2301 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2302 If you plan to use kernel for capturing the crash dump change
2303 this value to start of the reserved region (the "X" value as
2304 specified in the "crashkernel=YM@XM" command line boot parameter
2305 passed to the panic-ed kernel).
2308 bool "Enable seccomp to safely compute untrusted bytecode"
2312 This kernel feature is useful for number crunching applications
2313 that may need to compute untrusted bytecode during their
2314 execution. By using pipes or other transports made available to
2315 the process as file descriptors supporting the read/write
2316 syscalls, it's possible to isolate those applications in
2317 their own address space using seccomp. Once seccomp is
2318 enabled via /proc/<pid>/seccomp, it cannot be disabled
2319 and the task is only allowed to execute a few safe syscalls
2320 defined by each seccomp mode.
2322 If unsure, say Y. Only embedded should say N here.
2324 config CC_STACKPROTECTOR
2325 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2327 This option turns on the -fstack-protector GCC feature. This
2328 feature puts, at the beginning of functions, a canary value on
2329 the stack just before the return address, and validates
2330 the value just before actually returning. Stack based buffer
2331 overflows (that need to overwrite this return address) now also
2332 overwrite the canary, which gets detected and the attack is then
2333 neutralized via a kernel panic.
2335 This feature requires gcc version 4.2 or above.
2337 config MIPS_O32_FP64_SUPPORT
2338 bool "Support for O32 binaries using 64-bit FP"
2339 depends on 32BIT || MIPS32_O32
2342 When this is enabled, the kernel will support use of 64-bit floating
2343 point registers with binaries using the O32 ABI along with the
2344 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2345 32-bit MIPS systems this support is at the cost of increasing the
2346 size and complexity of the compiled FPU emulator. Thus if you are
2347 running a MIPS32 system and know that none of your userland binaries
2348 will require 64-bit floating point, you may wish to reduce the size
2349 of your kernel & potentially improve FP emulation performance by
2357 select OF_EARLY_FLATTREE
2362 config LOCKDEP_SUPPORT
2366 config STACKTRACE_SUPPORT
2370 source "init/Kconfig"
2372 source "kernel/Kconfig.freezer"
2374 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2382 bool "Support for PCI controller"
2383 depends on HW_HAS_PCI
2385 select NO_GENERIC_PCI_IOPORT_MAP
2387 Find out whether you have a PCI motherboard. PCI is the name of a
2388 bus system, i.e. the way the CPU talks to the other stuff inside
2389 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2395 source "drivers/pci/Kconfig"
2397 source "drivers/pci/pcie/Kconfig"
2400 # ISA support is now enabled via select. Too many systems still have the one
2401 # or other ISA chip on the board that users don't know about so don't expect
2402 # users to choose the right thing ...
2409 depends on HW_HAS_EISA
2411 select GENERIC_ISA_DMA
2413 The Extended Industry Standard Architecture (EISA) bus was
2414 developed as an open alternative to the IBM MicroChannel bus.
2416 The EISA bus provided some of the features of the IBM MicroChannel
2417 bus while maintaining backward compatibility with cards made for
2418 the older ISA bus. The EISA bus saw limited use between 1988 and
2419 1995 when it was made obsolete by the PCI bus.
2421 Say Y here if you are building a kernel for an EISA-based machine.
2425 source "drivers/eisa/Kconfig"
2428 bool "TURBOchannel support"
2429 depends on MACH_DECSTATION
2431 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2432 processors. TURBOchannel programming specifications are available
2434 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2436 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2437 Linux driver support status is documented at:
2438 <http://www.linux-mips.org/wiki/DECstation>
2448 select MIPS_EXTERNAL_TIMER
2456 source "drivers/pcmcia/Kconfig"
2458 source "drivers/pci/hotplug/Kconfig"
2461 bool "RapidIO support"
2465 If you say Y here, the kernel will include drivers and
2466 infrastructure code to support RapidIO interconnect devices.
2468 source "drivers/rapidio/Kconfig"
2472 menu "Executable file formats"
2474 source "fs/Kconfig.binfmt"
2479 config MIPS32_COMPAT
2480 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2483 Select this option if you want Linux/MIPS 32-bit binary
2484 compatibility. Since all software available for Linux/MIPS is
2485 currently 32-bit you should say Y here.
2489 depends on MIPS32_COMPAT
2490 select ARCH_WANT_OLD_COMPAT_IPC
2493 config SYSVIPC_COMPAT
2495 depends on COMPAT && SYSVIPC
2499 bool "Kernel support for o32 binaries"
2500 depends on MIPS32_COMPAT
2502 Select this option if you want to run o32 binaries. These are pure
2503 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2504 existing binaries are in this format.
2509 bool "Kernel support for n32 binaries"
2510 depends on MIPS32_COMPAT
2512 Select this option if you want to run n32 binaries. These are
2513 64-bit binaries using 32-bit quantities for addressing and certain
2514 data that would normally be 64-bit. They are used in special
2521 default y if MIPS32_O32 || MIPS32_N32
2525 menu "Power management options"
2527 config ARCH_HIBERNATION_POSSIBLE
2529 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2531 config ARCH_SUSPEND_POSSIBLE
2533 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2535 source "kernel/power/Kconfig"
2539 config MIPS_EXTERNAL_TIMER
2542 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2543 menu "CPU Power Management"
2544 source "drivers/cpufreq/Kconfig"
2548 source "net/Kconfig"
2550 source "drivers/Kconfig"
2552 source "drivers/firmware/Kconfig"
2556 source "arch/mips/Kconfig.debug"
2558 source "security/Kconfig"
2560 source "crypto/Kconfig"
2562 source "lib/Kconfig"
2564 source "arch/mips/kvm/Kconfig"