4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
10 select HAVE_PERF_EVENTS
11 select PERF_USE_VMALLOC
13 select HAVE_ARCH_TRACEHOOK
14 select ARCH_HAVE_CUSTOM_GPIO_H
15 select HAVE_FUNCTION_TRACER
16 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
17 select HAVE_DYNAMIC_FTRACE
18 select HAVE_FTRACE_MCOUNT_RECORD
19 select HAVE_C_RECORDMCOUNT
20 select HAVE_FUNCTION_GRAPH_TRACER
22 select HAVE_KRETPROBES
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_SYSCALL_TRACEPOINTS
25 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
26 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
27 select RTC_LIB if !MACH_LOONGSON
28 select GENERIC_ATOMIC64 if !64BIT
29 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
31 select HAVE_DMA_API_DEBUG
32 select GENERIC_IRQ_PROBE
33 select GENERIC_IRQ_SHOW
34 select GENERIC_PCI_IOMAP
35 select HAVE_ARCH_JUMP_LABEL
36 select ARCH_WANT_IPC_PARSE_VERSION
37 select IRQ_FORCED_THREADING
39 select HAVE_MEMBLOCK_NODE_MAP
40 select ARCH_DISCARD_MEMBLOCK
41 select GENERIC_SMP_IDLE_THREAD
42 select BUILDTIME_EXTABLE_SORT
43 select GENERIC_CLOCKEVENTS
44 select GENERIC_CMOS_UPDATE
45 select HAVE_MOD_ARCH_SPECIFIC
47 select MODULES_USE_ELF_REL if MODULES
48 select MODULES_USE_ELF_RELA if MODULES && 64BIT
49 select CLONE_BACKWARDS
50 select HAVE_DEBUG_STACKOVERFLOW
51 select HAVE_CC_STACKPROTECTOR
53 menu "Machine selection"
60 bool "Alchemy processor based machines"
61 select 64BIT_PHYS_ADDR
65 select SYS_HAS_CPU_MIPS32_R1
66 select SYS_SUPPORTS_32BIT_KERNEL
67 select SYS_SUPPORTS_APM_EMULATION
68 select ARCH_REQUIRE_GPIOLIB
69 select SYS_SUPPORTS_ZBOOT
70 select USB_ARCH_HAS_OHCI
71 select USB_ARCH_HAS_EHCI
74 bool "Texas Instruments AR7"
76 select DMA_NONCOHERENT
82 select SYS_HAS_CPU_MIPS32_R1
83 select SYS_HAS_EARLY_PRINTK
84 select SYS_SUPPORTS_32BIT_KERNEL
85 select SYS_SUPPORTS_LITTLE_ENDIAN
86 select SYS_SUPPORTS_ZBOOT_UART16550
87 select ARCH_REQUIRE_GPIOLIB
91 Support for the Texas Instruments AR7 System-on-a-Chip
92 family: TNETD7100, 7200 and 7300.
95 bool "Atheros AR71XX/AR724X/AR913X based boards"
96 select ARCH_REQUIRE_GPIOLIB
100 select DMA_NONCOHERENT
105 select SYS_HAS_CPU_MIPS32_R2
106 select SYS_HAS_EARLY_PRINTK
107 select SYS_SUPPORTS_32BIT_KERNEL
108 select SYS_SUPPORTS_BIG_ENDIAN
110 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
113 bool "Broadcom BCM47XX based boards"
114 select ARCH_WANT_OPTIONAL_GPIOLIB
118 select DMA_NONCOHERENT
121 select SYS_HAS_CPU_MIPS32_R1
122 select NO_EXCEPT_FILL
123 select SYS_SUPPORTS_32BIT_KERNEL
124 select SYS_SUPPORTS_LITTLE_ENDIAN
125 select SYS_HAS_EARLY_PRINTK
126 select EARLY_PRINTK_8250 if EARLY_PRINTK
128 Support for BCM47XX based boards
131 bool "Broadcom BCM63XX based boards"
135 select DMA_NONCOHERENT
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_BIG_ENDIAN
139 select SYS_HAS_EARLY_PRINTK
141 select ARCH_REQUIRE_GPIOLIB
143 select MIPS_L1_CACHE_SHIFT_4
145 Support for BCM63XX based boards
152 select DMA_NONCOHERENT
153 select EARLY_PRINTK_8250 if EARLY_PRINTK
159 select PCI_GT64XXX_PCI0
161 select SYS_HAS_CPU_NEVADA
162 select SYS_HAS_EARLY_PRINTK
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_64BIT_KERNEL
165 select SYS_SUPPORTS_LITTLE_ENDIAN
167 config MACH_DECSTATION
174 select CPU_DADDI_WORKAROUNDS if 64BIT
175 select CPU_R4000_WORKAROUNDS if 64BIT
176 select CPU_R4400_WORKAROUNDS if 64BIT
177 select DMA_NONCOHERENT
180 select SYS_HAS_CPU_R3000
181 select SYS_HAS_CPU_R4X00
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_SUPPORTS_64BIT_KERNEL
184 select SYS_SUPPORTS_LITTLE_ENDIAN
185 select SYS_SUPPORTS_128HZ
186 select SYS_SUPPORTS_256HZ
187 select SYS_SUPPORTS_1024HZ
188 select MIPS_L1_CACHE_SHIFT_4
190 This enables support for DEC's MIPS based workstations. For details
191 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
192 DECstation porting pages on <http://decstation.unix-ag.org/>.
194 If you have one of the following DECstation Models you definitely
195 want to choose R4xx0 for the CPU Type:
202 otherwise choose R3000.
205 bool "Jazz family of machines"
208 select ARCH_MAY_HAVE_PC_FDC
211 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
212 select GENERIC_ISA_DMA
213 select HAVE_PCSPKR_PLATFORM
218 select SYS_HAS_CPU_R4X00
219 select SYS_SUPPORTS_32BIT_KERNEL
220 select SYS_SUPPORTS_64BIT_KERNEL
221 select SYS_SUPPORTS_100HZ
223 This a family of machines based on the MIPS R4030 chipset which was
224 used by several vendors to build RISC/os and Windows NT workstations.
225 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
226 Olivetti M700-10 workstations.
229 bool "Ingenic JZ4740 based machines"
230 select SYS_HAS_CPU_MIPS32_R1
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_LITTLE_ENDIAN
233 select SYS_SUPPORTS_ZBOOT_UART16550
234 select DMA_NONCOHERENT
236 select ARCH_REQUIRE_GPIOLIB
237 select SYS_HAS_EARLY_PRINTK
240 select GENERIC_IRQ_CHIP
243 bool "Lantiq based platforms"
244 select DMA_NONCOHERENT
248 select SYS_HAS_CPU_MIPS32_R1
249 select SYS_HAS_CPU_MIPS32_R2
250 select SYS_SUPPORTS_BIG_ENDIAN
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_MULTITHREADING
253 select SYS_HAS_EARLY_PRINTK
254 select ARCH_REQUIRE_GPIOLIB
257 select HAVE_MACH_CLKDEV
261 select PINCTRL_LANTIQ
264 bool "LASAT Networks platforms"
267 select DMA_NONCOHERENT
268 select SYS_HAS_EARLY_PRINTK
271 select PCI_GT64XXX_PCI0
273 select R5000_CPU_SCACHE
274 select SYS_HAS_CPU_R5000
275 select SYS_SUPPORTS_32BIT_KERNEL
276 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
277 select SYS_SUPPORTS_LITTLE_ENDIAN
280 bool "Loongson family of machines"
281 select SYS_SUPPORTS_ZBOOT
283 This enables the support of Loongson family of machines.
285 Loongson is a family of general-purpose MIPS-compatible CPUs.
286 developed at Institute of Computing Technology (ICT),
287 Chinese Academy of Sciences (CAS) in the People's Republic
288 of China. The chief architect is Professor Weiwu Hu.
290 config MACH_LOONGSON1
291 bool "Loongson 1 family of machines"
292 select SYS_SUPPORTS_ZBOOT
294 This enables support for the Loongson 1 based machines.
296 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
297 the ICT (Institute of Computing Technology) and the Chinese Academy
301 bool "MIPS Malta board"
302 select ARCH_MAY_HAVE_PC_FDC
308 select DMA_MAYBE_COHERENT
309 select GENERIC_ISA_DMA
310 select HAVE_PCSPKR_PLATFORM
317 select MIPS_CPU_SCACHE
318 select PCI_GT64XXX_PCI0
321 select SYS_HAS_CPU_MIPS32_R1
322 select SYS_HAS_CPU_MIPS32_R2
323 select SYS_HAS_CPU_MIPS64_R1
324 select SYS_HAS_CPU_MIPS64_R2
325 select SYS_HAS_CPU_NEVADA
326 select SYS_HAS_CPU_RM7000
327 select SYS_SUPPORTS_32BIT_KERNEL
328 select SYS_SUPPORTS_64BIT_KERNEL
329 select SYS_SUPPORTS_BIG_ENDIAN
330 select SYS_SUPPORTS_LITTLE_ENDIAN
331 select SYS_SUPPORTS_MIPS_CMP
332 select SYS_SUPPORTS_MIPS_CPS
333 select SYS_SUPPORTS_MULTITHREADING
334 select SYS_SUPPORTS_SMARTMIPS
335 select SYS_SUPPORTS_ZBOOT
337 This enables support for the MIPS Technologies Malta evaluation
341 bool "MIPS SEAD3 board"
347 select CPU_MIPSR2_IRQ_VI
348 select CPU_MIPSR2_IRQ_EI
349 select DMA_NONCOHERENT
354 select SYS_HAS_CPU_MIPS32_R1
355 select SYS_HAS_CPU_MIPS32_R2
356 select SYS_HAS_CPU_MIPS64_R1
357 select SYS_HAS_EARLY_PRINTK
358 select SYS_SUPPORTS_32BIT_KERNEL
359 select SYS_SUPPORTS_64BIT_KERNEL
360 select SYS_SUPPORTS_BIG_ENDIAN
361 select SYS_SUPPORTS_LITTLE_ENDIAN
362 select SYS_SUPPORTS_SMARTMIPS
363 select SYS_SUPPORTS_MICROMIPS
364 select USB_ARCH_HAS_EHCI
365 select USB_EHCI_BIG_ENDIAN_DESC
366 select USB_EHCI_BIG_ENDIAN_MMIO
369 This enables support for the MIPS Technologies SEAD3 evaluation
373 bool "NEC EMMA2RH Mark-eins board"
377 This enables support for the NEC Electronics Mark-eins boards.
380 bool "NEC VR4100 series based machines"
383 select SYS_HAS_CPU_VR41XX
384 select ARCH_REQUIRE_GPIOLIB
387 bool "NXP STB220 board"
390 Support for NXP Semiconductors STB220 Development Board.
397 Support for NXP Semiconductors STB225 Development Board.
400 bool "PMC-Sierra MSP chipsets"
403 select DMA_NONCOHERENT
405 select NO_EXCEPT_FILL
407 select SYS_HAS_CPU_MIPS32_R1
408 select SYS_HAS_CPU_MIPS32_R2
409 select SYS_SUPPORTS_32BIT_KERNEL
410 select SYS_SUPPORTS_BIG_ENDIAN
413 select SERIAL_8250_CONSOLE
414 select USB_EHCI_BIG_ENDIAN_MMIO
415 select USB_EHCI_BIG_ENDIAN_DESC
417 This adds support for the PMC-Sierra family of Multi-Service
418 Processor System-On-A-Chips. These parts include a number
419 of integrated peripherals, interfaces and DSPs in addition to
420 a variety of MIPS cores.
423 bool "Ralink based machines"
427 select DMA_NONCOHERENT
430 select SYS_HAS_CPU_MIPS32_R1
431 select SYS_HAS_CPU_MIPS32_R2
432 select SYS_SUPPORTS_32BIT_KERNEL
433 select SYS_SUPPORTS_LITTLE_ENDIAN
434 select SYS_HAS_EARLY_PRINTK
435 select HAVE_MACH_CLKDEV
437 select ARCH_HAS_RESET_CONTROLLER
438 select RESET_CONTROLLER
441 bool "SGI IP22 (Indy/Indigo2)"
447 select DEFAULT_SGI_PARTITION
448 select DMA_NONCOHERENT
452 select IP22_CPU_SCACHE
454 select GENERIC_ISA_DMA_SUPPORT_BROKEN
456 select SGI_HAS_INDYDOG
462 select SYS_HAS_CPU_R4X00
463 select SYS_HAS_CPU_R5000
465 # Disable EARLY_PRINTK for now since it leads to overwritten prom
466 # memory during early boot on some machines.
468 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
469 # for a more details discussion
471 # select SYS_HAS_EARLY_PRINTK
472 select SYS_SUPPORTS_32BIT_KERNEL
473 select SYS_SUPPORTS_64BIT_KERNEL
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select MIPS_L1_CACHE_SHIFT_7
477 This are the SGI Indy, Challenge S and Indigo2, as well as certain
478 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
479 that runs on these, say Y here.
482 bool "SGI IP27 (Origin200/2000)"
486 select DEFAULT_SGI_PARTITION
488 select SYS_HAS_EARLY_PRINTK
490 select NR_CPUS_DEFAULT_64
491 select SYS_HAS_CPU_R10000
492 select SYS_SUPPORTS_64BIT_KERNEL
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_NUMA
495 select SYS_SUPPORTS_SMP
496 select MIPS_L1_CACHE_SHIFT_7
498 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
499 workstations. To compile a Linux kernel that runs on these, say Y
503 bool "SGI IP28 (Indigo2 R10k)"
509 select DEFAULT_SGI_PARTITION
510 select DMA_NONCOHERENT
511 select GENERIC_ISA_DMA_SUPPORT_BROKEN
517 select SGI_HAS_INDYDOG
523 select SYS_HAS_CPU_R10000
525 # Disable EARLY_PRINTK for now since it leads to overwritten prom
526 # memory during early boot on some machines.
528 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
529 # for a more details discussion
531 # select SYS_HAS_EARLY_PRINTK
532 select SYS_SUPPORTS_64BIT_KERNEL
533 select SYS_SUPPORTS_BIG_ENDIAN
535 This is the SGI Indigo2 with R10000 processor. To compile a Linux
536 kernel that runs on these, say Y here.
545 select DMA_NONCOHERENT
548 select R5000_CPU_SCACHE
549 select RM7000_CPU_SCACHE
550 select SYS_HAS_CPU_R5000
551 select SYS_HAS_CPU_R10000 if BROKEN
552 select SYS_HAS_CPU_RM7000
553 select SYS_HAS_CPU_NEVADA
554 select SYS_SUPPORTS_64BIT_KERNEL
555 select SYS_SUPPORTS_BIG_ENDIAN
557 If you want this kernel to run on SGI O2 workstation, say Y here.
560 bool "Sibyte BCM91120C-CRhine"
563 select SIBYTE_BCM1120
565 select SYS_HAS_CPU_SB1
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select SYS_SUPPORTS_LITTLE_ENDIAN
570 bool "Sibyte BCM91120x-Carmel"
573 select SIBYTE_BCM1120
575 select SYS_HAS_CPU_SB1
576 select SYS_SUPPORTS_BIG_ENDIAN
577 select SYS_SUPPORTS_LITTLE_ENDIAN
580 bool "Sibyte BCM91125C-CRhone"
583 select SIBYTE_BCM1125
585 select SYS_HAS_CPU_SB1
586 select SYS_SUPPORTS_BIG_ENDIAN
587 select SYS_SUPPORTS_HIGHMEM
588 select SYS_SUPPORTS_LITTLE_ENDIAN
591 bool "Sibyte BCM91125E-Rhone"
594 select SIBYTE_BCM1125H
596 select SYS_HAS_CPU_SB1
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_LITTLE_ENDIAN
601 bool "Sibyte BCM91250A-SWARM"
604 select HAVE_PATA_PLATFORM
607 select SYS_HAS_CPU_SB1
608 select SYS_SUPPORTS_BIG_ENDIAN
609 select SYS_SUPPORTS_HIGHMEM
610 select SYS_SUPPORTS_LITTLE_ENDIAN
611 select ZONE_DMA32 if 64BIT
613 config SIBYTE_LITTLESUR
614 bool "Sibyte BCM91250C2-LittleSur"
617 select HAVE_PATA_PLATFORM
620 select SYS_HAS_CPU_SB1
621 select SYS_SUPPORTS_BIG_ENDIAN
622 select SYS_SUPPORTS_HIGHMEM
623 select SYS_SUPPORTS_LITTLE_ENDIAN
625 config SIBYTE_SENTOSA
626 bool "Sibyte BCM91250E-Sentosa"
631 select SYS_HAS_CPU_SB1
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select SYS_SUPPORTS_LITTLE_ENDIAN
636 bool "Sibyte BCM91480B-BigSur"
639 select NR_CPUS_DEFAULT_4
640 select SIBYTE_BCM1x80
642 select SYS_HAS_CPU_SB1
643 select SYS_SUPPORTS_BIG_ENDIAN
644 select SYS_SUPPORTS_HIGHMEM
645 select SYS_SUPPORTS_LITTLE_ENDIAN
646 select ZONE_DMA32 if 64BIT
649 bool "SNI RM200/300/400"
650 select FW_ARC if CPU_LITTLE_ENDIAN
651 select FW_ARC32 if CPU_LITTLE_ENDIAN
652 select FW_SNIPROM if CPU_BIG_ENDIAN
653 select ARCH_MAY_HAVE_PC_FDC
657 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
658 select DMA_NONCOHERENT
659 select GENERIC_ISA_DMA
660 select HAVE_PCSPKR_PLATFORM
667 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
668 select SYS_HAS_CPU_R4X00
669 select SYS_HAS_CPU_R5000
670 select SYS_HAS_CPU_R10000
671 select R5000_CPU_SCACHE
672 select SYS_HAS_EARLY_PRINTK
673 select SYS_SUPPORTS_32BIT_KERNEL
674 select SYS_SUPPORTS_64BIT_KERNEL
675 select SYS_SUPPORTS_BIG_ENDIAN
676 select SYS_SUPPORTS_HIGHMEM
677 select SYS_SUPPORTS_LITTLE_ENDIAN
679 The SNI RM200/300/400 are MIPS-based machines manufactured by
680 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
681 Technology and now in turn merged with Fujitsu. Say Y here to
682 support this machine type.
685 bool "Toshiba TX39 series based machines"
688 bool "Toshiba TX49 series based machines"
690 config MIKROTIK_RB532
691 bool "Mikrotik RB532 boards"
694 select DMA_NONCOHERENT
697 select SYS_HAS_CPU_MIPS32_R1
698 select SYS_SUPPORTS_32BIT_KERNEL
699 select SYS_SUPPORTS_LITTLE_ENDIAN
702 select ARCH_REQUIRE_GPIOLIB
703 select MIPS_L1_CACHE_SHIFT_4
705 Support the Mikrotik(tm) RouterBoard 532 series,
706 based on the IDT RC32434 SoC.
708 config CAVIUM_OCTEON_SOC
709 bool "Cavium Networks Octeon SoC based boards"
711 select 64BIT_PHYS_ADDR
713 select SYS_SUPPORTS_64BIT_KERNEL
714 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_HOTPLUG_CPU
717 select SYS_HAS_EARLY_PRINTK
718 select SYS_HAS_CPU_CAVIUM_OCTEON
722 select USB_ARCH_HAS_OHCI
723 select USB_ARCH_HAS_EHCI
725 select ARCH_REQUIRE_GPIOLIB
727 This option supports all of the Octeon reference boards from Cavium
728 Networks. It builds a kernel that dynamically determines the Octeon
729 CPU type and supports all known board reference implementations.
730 Some of the supported boards are:
737 Say Y here for most Octeon reference boards.
740 bool "Netlogic XLR/XLS based systems"
743 select SYS_HAS_CPU_XLR
744 select SYS_SUPPORTS_SMP
747 select SYS_SUPPORTS_32BIT_KERNEL
748 select SYS_SUPPORTS_64BIT_KERNEL
749 select 64BIT_PHYS_ADDR
750 select SYS_SUPPORTS_BIG_ENDIAN
751 select SYS_SUPPORTS_HIGHMEM
753 select NR_CPUS_DEFAULT_32
757 select ZONE_DMA32 if 64BIT
759 select SYS_HAS_EARLY_PRINTK
760 select USB_ARCH_HAS_OHCI if USB_SUPPORT
761 select USB_ARCH_HAS_EHCI if USB_SUPPORT
762 select SYS_SUPPORTS_ZBOOT
763 select SYS_SUPPORTS_ZBOOT_UART16550
765 Support for systems based on Netlogic XLR and XLS processors.
766 Say Y here if you have a XLR or XLS based board.
769 bool "Netlogic XLP based systems"
772 select SYS_HAS_CPU_XLP
773 select SYS_SUPPORTS_SMP
775 select SYS_SUPPORTS_32BIT_KERNEL
776 select SYS_SUPPORTS_64BIT_KERNEL
777 select 64BIT_PHYS_ADDR
778 select SYS_SUPPORTS_BIG_ENDIAN
779 select SYS_SUPPORTS_LITTLE_ENDIAN
780 select SYS_SUPPORTS_HIGHMEM
782 select NR_CPUS_DEFAULT_32
786 select ARCH_SUPPORTS_MSI
787 select ZONE_DMA32 if 64BIT
789 select SYS_HAS_EARLY_PRINTK
791 select SYS_SUPPORTS_ZBOOT
792 select SYS_SUPPORTS_ZBOOT_UART16550
794 This board is based on Netlogic XLP Processor.
795 Say Y here if you have a XLP based board.
799 source "arch/mips/alchemy/Kconfig"
800 source "arch/mips/ath79/Kconfig"
801 source "arch/mips/bcm47xx/Kconfig"
802 source "arch/mips/bcm63xx/Kconfig"
803 source "arch/mips/jazz/Kconfig"
804 source "arch/mips/jz4740/Kconfig"
805 source "arch/mips/lantiq/Kconfig"
806 source "arch/mips/lasat/Kconfig"
807 source "arch/mips/pmcs-msp71xx/Kconfig"
808 source "arch/mips/ralink/Kconfig"
809 source "arch/mips/sgi-ip27/Kconfig"
810 source "arch/mips/sibyte/Kconfig"
811 source "arch/mips/txx9/Kconfig"
812 source "arch/mips/vr41xx/Kconfig"
813 source "arch/mips/cavium-octeon/Kconfig"
814 source "arch/mips/loongson/Kconfig"
815 source "arch/mips/loongson1/Kconfig"
816 source "arch/mips/netlogic/Kconfig"
820 config RWSEM_GENERIC_SPINLOCK
824 config RWSEM_XCHGADD_ALGORITHM
827 config ARCH_HAS_ILOG2_U32
831 config ARCH_HAS_ILOG2_U64
835 config GENERIC_HWEIGHT
839 config GENERIC_CALIBRATE_DELAY
843 config SCHED_OMIT_FRAME_POINTER
848 # Select some configuration options automatically based on user selections.
853 config ARCH_MAY_HAVE_PC_FDC
898 select ARCH_REQUIRE_GPIOLIB
904 config ARCH_DMA_ADDR_T_64BIT
905 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
907 config DMA_MAYBE_COHERENT
908 select DMA_NONCOHERENT
914 config DMA_NONCOHERENT
916 select NEED_DMA_MAP_STATE
918 config NEED_DMA_MAP_STATE
921 config SYS_HAS_EARLY_PRINTK
925 bool "Support for hot-pluggable CPUs"
926 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
928 Say Y here to allow turning CPUs off and on. CPUs can be
929 controlled through /sys/devices/system/cpu.
930 (Note: power management support will enable this option
931 automatically on SMP systems. )
932 Say N if you want to disable CPU hotplug.
934 config SYS_SUPPORTS_HOTPLUG_CPU
958 config GENERIC_ISA_DMA
960 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
963 config GENERIC_ISA_DMA_SUPPORT_BROKEN
965 select GENERIC_ISA_DMA
974 # Endianness selection. Sufficiently obscure so many users don't know what to
975 # answer,so we try hard to limit the available choices. Also the use of a
976 # choice statement should be more obvious to the user.
979 prompt "Endianness selection"
981 Some MIPS machines can be configured for either little or big endian
982 byte order. These modes require different kernels and a different
983 Linux distribution. In general there is one preferred byteorder for a
984 particular system but some systems are just as commonly used in the
985 one or the other endianness.
987 config CPU_BIG_ENDIAN
989 depends on SYS_SUPPORTS_BIG_ENDIAN
991 config CPU_LITTLE_ENDIAN
993 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1000 config SYS_SUPPORTS_APM_EMULATION
1003 config SYS_SUPPORTS_BIG_ENDIAN
1006 config SYS_SUPPORTS_LITTLE_ENDIAN
1009 config SYS_SUPPORTS_HUGETLBFS
1011 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1014 config MIPS_HUGE_TLB_SUPPORT
1015 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1039 config PCI_GT64XXX_PCI0
1042 config NO_EXCEPT_FILL
1049 select DMA_NONCOHERENT
1051 select SWAP_IO_SPACE
1052 select SYS_HAS_CPU_R5500
1053 select SYS_SUPPORTS_32BIT_KERNEL
1054 select SYS_SUPPORTS_64BIT_KERNEL
1055 select SYS_SUPPORTS_BIG_ENDIAN
1062 select DMA_NONCOHERENT
1063 select SYS_HAS_CPU_MIPS32_R2
1064 select SYS_SUPPORTS_32BIT_KERNEL
1065 select SYS_SUPPORTS_LITTLE_ENDIAN
1066 select SYS_SUPPORTS_BIG_ENDIAN
1067 select CPU_MIPSR2_IRQ_VI
1073 config SWAP_IO_SPACE
1076 config SGI_HAS_INDYDOG
1088 config SGI_HAS_ZILOG
1091 config SGI_HAS_I8042
1094 config DEFAULT_SGI_PARTITION
1106 config MIPS_L1_CACHE_SHIFT_4
1109 config MIPS_L1_CACHE_SHIFT_5
1112 config MIPS_L1_CACHE_SHIFT_6
1115 config MIPS_L1_CACHE_SHIFT_7
1118 config MIPS_L1_CACHE_SHIFT
1120 default "4" if MIPS_L1_CACHE_SHIFT_4
1121 default "5" if MIPS_L1_CACHE_SHIFT_5
1122 default "6" if MIPS_L1_CACHE_SHIFT_6
1123 default "7" if MIPS_L1_CACHE_SHIFT_7
1126 config HAVE_STD_PC_SERIAL_PORT
1130 bool "ARC console support"
1131 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1135 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1140 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1149 menu "CPU selection"
1155 config CPU_LOONGSON2E
1157 depends on SYS_HAS_CPU_LOONGSON2E
1158 select CPU_LOONGSON2
1160 The Loongson 2E processor implements the MIPS III instruction set
1161 with many extensions.
1163 It has an internal FPGA northbridge, which is compatible to
1166 config CPU_LOONGSON2F
1168 depends on SYS_HAS_CPU_LOONGSON2F
1169 select CPU_LOONGSON2
1170 select ARCH_REQUIRE_GPIOLIB
1172 The Loongson 2F processor implements the MIPS III instruction set
1173 with many extensions.
1175 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1176 have a similar programming interface with FPGA northbridge used in
1179 config CPU_LOONGSON1B
1181 depends on SYS_HAS_CPU_LOONGSON1B
1182 select CPU_LOONGSON1
1184 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1185 release 2 instruction set.
1187 config CPU_MIPS32_R1
1188 bool "MIPS32 Release 1"
1189 depends on SYS_HAS_CPU_MIPS32_R1
1190 select CPU_HAS_PREFETCH
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_HIGHMEM
1194 Choose this option to build a kernel for release 1 or later of the
1195 MIPS32 architecture. Most modern embedded systems with a 32-bit
1196 MIPS processor are based on a MIPS32 processor. If you know the
1197 specific type of processor in your system, choose those that one
1198 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1199 Release 2 of the MIPS32 architecture is available since several
1200 years so chances are you even have a MIPS32 Release 2 processor
1201 in which case you should choose CPU_MIPS32_R2 instead for better
1204 config CPU_MIPS32_R2
1205 bool "MIPS32 Release 2"
1206 depends on SYS_HAS_CPU_MIPS32_R2
1207 select CPU_HAS_PREFETCH
1208 select CPU_SUPPORTS_32BIT_KERNEL
1209 select CPU_SUPPORTS_HIGHMEM
1212 Choose this option to build a kernel for release 2 or later of the
1213 MIPS32 architecture. Most modern embedded systems with a 32-bit
1214 MIPS processor are based on a MIPS32 processor. If you know the
1215 specific type of processor in your system, choose those that one
1216 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1218 config CPU_MIPS64_R1
1219 bool "MIPS64 Release 1"
1220 depends on SYS_HAS_CPU_MIPS64_R1
1221 select CPU_HAS_PREFETCH
1222 select CPU_SUPPORTS_32BIT_KERNEL
1223 select CPU_SUPPORTS_64BIT_KERNEL
1224 select CPU_SUPPORTS_HIGHMEM
1225 select CPU_SUPPORTS_HUGEPAGES
1227 Choose this option to build a kernel for release 1 or later of the
1228 MIPS64 architecture. Many modern embedded systems with a 64-bit
1229 MIPS processor are based on a MIPS64 processor. If you know the
1230 specific type of processor in your system, choose those that one
1231 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1232 Release 2 of the MIPS64 architecture is available since several
1233 years so chances are you even have a MIPS64 Release 2 processor
1234 in which case you should choose CPU_MIPS64_R2 instead for better
1237 config CPU_MIPS64_R2
1238 bool "MIPS64 Release 2"
1239 depends on SYS_HAS_CPU_MIPS64_R2
1240 select CPU_HAS_PREFETCH
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1243 select CPU_SUPPORTS_HIGHMEM
1244 select CPU_SUPPORTS_HUGEPAGES
1246 Choose this option to build a kernel for release 2 or later of the
1247 MIPS64 architecture. Many modern embedded systems with a 64-bit
1248 MIPS processor are based on a MIPS64 processor. If you know the
1249 specific type of processor in your system, choose those that one
1250 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1254 depends on SYS_HAS_CPU_R3000
1256 select CPU_SUPPORTS_32BIT_KERNEL
1257 select CPU_SUPPORTS_HIGHMEM
1259 Please make sure to pick the right CPU type. Linux/MIPS is not
1260 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1261 *not* work on R4000 machines and vice versa. However, since most
1262 of the supported machines have an R4000 (or similar) CPU, R4x00
1263 might be a safe bet. If the resulting kernel does not work,
1264 try to recompile with R3000.
1268 depends on SYS_HAS_CPU_TX39XX
1269 select CPU_SUPPORTS_32BIT_KERNEL
1273 depends on SYS_HAS_CPU_VR41XX
1274 select CPU_SUPPORTS_32BIT_KERNEL
1275 select CPU_SUPPORTS_64BIT_KERNEL
1277 The options selects support for the NEC VR4100 series of processors.
1278 Only choose this option if you have one of these processors as a
1279 kernel built with this option will not run on any other type of
1280 processor or vice versa.
1284 depends on SYS_HAS_CPU_R4300
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1288 MIPS Technologies R4300-series processors.
1292 depends on SYS_HAS_CPU_R4X00
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select CPU_SUPPORTS_HUGEPAGES
1297 MIPS Technologies R4000-series processors other than 4300, including
1298 the R4000, R4400, R4600, and 4700.
1302 depends on SYS_HAS_CPU_TX49XX
1303 select CPU_HAS_PREFETCH
1304 select CPU_SUPPORTS_32BIT_KERNEL
1305 select CPU_SUPPORTS_64BIT_KERNEL
1306 select CPU_SUPPORTS_HUGEPAGES
1310 depends on SYS_HAS_CPU_R5000
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1313 select CPU_SUPPORTS_HUGEPAGES
1315 MIPS Technologies R5000-series processors other than the Nevada.
1319 depends on SYS_HAS_CPU_R5432
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1322 select CPU_SUPPORTS_HUGEPAGES
1326 depends on SYS_HAS_CPU_R5500
1327 select CPU_SUPPORTS_32BIT_KERNEL
1328 select CPU_SUPPORTS_64BIT_KERNEL
1329 select CPU_SUPPORTS_HUGEPAGES
1331 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1336 depends on SYS_HAS_CPU_R6000
1337 select CPU_SUPPORTS_32BIT_KERNEL
1339 MIPS Technologies R6000 and R6000A series processors. Note these
1340 processors are extremely rare and the support for them is incomplete.
1344 depends on SYS_HAS_CPU_NEVADA
1345 select CPU_SUPPORTS_32BIT_KERNEL
1346 select CPU_SUPPORTS_64BIT_KERNEL
1347 select CPU_SUPPORTS_HUGEPAGES
1349 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1353 depends on SYS_HAS_CPU_R8000
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_64BIT_KERNEL
1357 MIPS Technologies R8000 processors. Note these processors are
1358 uncommon and the support for them is incomplete.
1362 depends on SYS_HAS_CPU_R10000
1363 select CPU_HAS_PREFETCH
1364 select CPU_SUPPORTS_32BIT_KERNEL
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_HUGEPAGES
1369 MIPS Technologies R10000-series processors.
1373 depends on SYS_HAS_CPU_RM7000
1374 select CPU_HAS_PREFETCH
1375 select CPU_SUPPORTS_32BIT_KERNEL
1376 select CPU_SUPPORTS_64BIT_KERNEL
1377 select CPU_SUPPORTS_HIGHMEM
1378 select CPU_SUPPORTS_HUGEPAGES
1382 depends on SYS_HAS_CPU_SB1
1383 select CPU_SUPPORTS_32BIT_KERNEL
1384 select CPU_SUPPORTS_64BIT_KERNEL
1385 select CPU_SUPPORTS_HIGHMEM
1386 select CPU_SUPPORTS_HUGEPAGES
1387 select WEAK_ORDERING
1389 config CPU_CAVIUM_OCTEON
1390 bool "Cavium Octeon processor"
1391 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1392 select ARCH_SPARSEMEM_ENABLE
1393 select CPU_HAS_PREFETCH
1394 select CPU_SUPPORTS_64BIT_KERNEL
1395 select SYS_SUPPORTS_SMP
1396 select NR_CPUS_DEFAULT_16
1397 select WEAK_ORDERING
1398 select CPU_SUPPORTS_HIGHMEM
1399 select CPU_SUPPORTS_HUGEPAGES
1402 select USB_EHCI_BIG_ENDIAN_MMIO
1403 select SYS_HAS_DMA_OPS
1404 select MIPS_L1_CACHE_SHIFT_7
1406 The Cavium Octeon processor is a highly integrated chip containing
1407 many ethernet hardware widgets for networking tasks. The processor
1408 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1409 Full details can be found at http://www.caviumnetworks.com.
1412 bool "Broadcom BMIPS"
1413 depends on SYS_HAS_CPU_BMIPS
1415 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1416 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1417 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1418 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1419 select CPU_SUPPORTS_32BIT_KERNEL
1420 select DMA_NONCOHERENT
1422 select SWAP_IO_SPACE
1423 select WEAK_ORDERING
1424 select CPU_SUPPORTS_HIGHMEM
1425 select CPU_HAS_PREFETCH
1427 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1430 bool "Netlogic XLR SoC"
1431 depends on SYS_HAS_CPU_XLR
1432 select CPU_SUPPORTS_32BIT_KERNEL
1433 select CPU_SUPPORTS_64BIT_KERNEL
1434 select CPU_SUPPORTS_HIGHMEM
1435 select CPU_SUPPORTS_HUGEPAGES
1436 select WEAK_ORDERING
1437 select WEAK_REORDERING_BEYOND_LLSC
1439 Netlogic Microsystems XLR/XLS processors.
1442 bool "Netlogic XLP SoC"
1443 depends on SYS_HAS_CPU_XLP
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_64BIT_KERNEL
1446 select CPU_SUPPORTS_HIGHMEM
1447 select WEAK_ORDERING
1448 select WEAK_REORDERING_BEYOND_LLSC
1449 select CPU_HAS_PREFETCH
1452 Netlogic Microsystems XLP processors.
1456 config CPU_NOP_WORKAROUNDS
1459 config CPU_JUMP_WORKAROUNDS
1462 config CPU_LOONGSON2F_WORKAROUNDS
1463 bool "Loongson 2F Workarounds"
1465 select CPU_NOP_WORKAROUNDS
1466 select CPU_JUMP_WORKAROUNDS
1468 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1469 require workarounds. Without workarounds the system may hang
1470 unexpectedly. For more information please refer to the gas
1471 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1473 Loongson 2F03 and later have fixed these issues and no workarounds
1474 are needed. The workarounds have no significant side effect on them
1475 but may decrease the performance of the system so this option should
1476 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1479 If unsure, please say Y.
1480 endif # CPU_LOONGSON2F
1482 config SYS_SUPPORTS_ZBOOT
1484 select HAVE_KERNEL_GZIP
1485 select HAVE_KERNEL_BZIP2
1486 select HAVE_KERNEL_LZ4
1487 select HAVE_KERNEL_LZMA
1488 select HAVE_KERNEL_LZO
1489 select HAVE_KERNEL_XZ
1491 config SYS_SUPPORTS_ZBOOT_UART16550
1493 select SYS_SUPPORTS_ZBOOT
1495 config CPU_LOONGSON2
1497 select CPU_SUPPORTS_32BIT_KERNEL
1498 select CPU_SUPPORTS_64BIT_KERNEL
1499 select CPU_SUPPORTS_HIGHMEM
1500 select CPU_SUPPORTS_HUGEPAGES
1502 config CPU_LOONGSON1
1506 select CPU_HAS_PREFETCH
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1510 config CPU_BMIPS32_3300
1511 select SMP_UP if SMP
1514 config CPU_BMIPS4350
1516 select SYS_SUPPORTS_SMP
1517 select SYS_SUPPORTS_HOTPLUG_CPU
1519 config CPU_BMIPS4380
1521 select SYS_SUPPORTS_SMP
1522 select SYS_SUPPORTS_HOTPLUG_CPU
1524 config CPU_BMIPS5000
1526 select MIPS_CPU_SCACHE
1527 select SYS_SUPPORTS_SMP
1528 select SYS_SUPPORTS_HOTPLUG_CPU
1530 config SYS_HAS_CPU_LOONGSON2E
1533 config SYS_HAS_CPU_LOONGSON2F
1535 select CPU_SUPPORTS_CPUFREQ
1536 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1537 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1539 config SYS_HAS_CPU_LOONGSON1B
1542 config SYS_HAS_CPU_MIPS32_R1
1545 config SYS_HAS_CPU_MIPS32_R2
1548 config SYS_HAS_CPU_MIPS64_R1
1551 config SYS_HAS_CPU_MIPS64_R2
1554 config SYS_HAS_CPU_R3000
1557 config SYS_HAS_CPU_TX39XX
1560 config SYS_HAS_CPU_VR41XX
1563 config SYS_HAS_CPU_R4300
1566 config SYS_HAS_CPU_R4X00
1569 config SYS_HAS_CPU_TX49XX
1572 config SYS_HAS_CPU_R5000
1575 config SYS_HAS_CPU_R5432
1578 config SYS_HAS_CPU_R5500
1581 config SYS_HAS_CPU_R6000
1584 config SYS_HAS_CPU_NEVADA
1587 config SYS_HAS_CPU_R8000
1590 config SYS_HAS_CPU_R10000
1593 config SYS_HAS_CPU_RM7000
1596 config SYS_HAS_CPU_SB1
1599 config SYS_HAS_CPU_CAVIUM_OCTEON
1602 config SYS_HAS_CPU_BMIPS
1605 config SYS_HAS_CPU_BMIPS32_3300
1607 select SYS_HAS_CPU_BMIPS
1609 config SYS_HAS_CPU_BMIPS4350
1611 select SYS_HAS_CPU_BMIPS
1613 config SYS_HAS_CPU_BMIPS4380
1615 select SYS_HAS_CPU_BMIPS
1617 config SYS_HAS_CPU_BMIPS5000
1619 select SYS_HAS_CPU_BMIPS
1621 config SYS_HAS_CPU_XLR
1624 config SYS_HAS_CPU_XLP
1628 # CPU may reorder R->R, R->W, W->R, W->W
1629 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1631 config WEAK_ORDERING
1635 # CPU may reorder reads and writes beyond LL/SC
1636 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1638 config WEAK_REORDERING_BEYOND_LLSC
1643 # These two indicate any level of the MIPS32 and MIPS64 architecture
1647 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1651 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1654 # These two indicate the revision of the architecture, either Release 1 or Release 2
1658 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1662 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1664 config SYS_SUPPORTS_32BIT_KERNEL
1666 config SYS_SUPPORTS_64BIT_KERNEL
1668 config CPU_SUPPORTS_32BIT_KERNEL
1670 config CPU_SUPPORTS_64BIT_KERNEL
1672 config CPU_SUPPORTS_CPUFREQ
1674 config CPU_SUPPORTS_ADDRWINCFG
1676 config CPU_SUPPORTS_HUGEPAGES
1678 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1680 config MIPS_PGD_C0_CONTEXT
1682 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1685 # Set to y for ptrace access to watch registers.
1687 config HARDWARE_WATCHPOINTS
1689 default y if CPU_MIPSR1 || CPU_MIPSR2
1694 prompt "Kernel code model"
1696 You should only select this option if you have a workload that
1697 actually benefits from 64-bit processing or if your machine has
1698 large memory. You will only be presented a single option in this
1699 menu if your system does not support both 32-bit and 64-bit kernels.
1702 bool "32-bit kernel"
1703 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1706 Select this option if you want to build a 32-bit kernel.
1708 bool "64-bit kernel"
1709 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1711 Select this option if you want to build a 64-bit kernel.
1716 bool "KVM Guest Kernel"
1717 depends on BROKEN_ON_SMP
1719 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1721 config KVM_HOST_FREQ
1722 int "KVM Host Processor Frequency (MHz)"
1723 depends on KVM_GUEST
1726 Select this option if building a guest kernel for KVM to skip
1727 RTC emulation when determining guest CPU Frequency. Instead, the guest
1728 processor frequency is automatically derived from the host frequency.
1731 prompt "Kernel page size"
1732 default PAGE_SIZE_4KB
1734 config PAGE_SIZE_4KB
1736 depends on !CPU_LOONGSON2
1738 This option select the standard 4kB Linux page size. On some
1739 R3000-family processors this is the only available page size. Using
1740 4kB page size will minimize memory consumption and is therefore
1741 recommended for low memory systems.
1743 config PAGE_SIZE_8KB
1745 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1747 Using 8kB page size will result in higher performance kernel at
1748 the price of higher memory consumption. This option is available
1749 only on R8000 and cnMIPS processors. Note that you will need a
1750 suitable Linux distribution to support this.
1752 config PAGE_SIZE_16KB
1754 depends on !CPU_R3000 && !CPU_TX39XX
1756 Using 16kB page size will result in higher performance kernel at
1757 the price of higher memory consumption. This option is available on
1758 all non-R3000 family processors. Note that you will need a suitable
1759 Linux distribution to support this.
1761 config PAGE_SIZE_32KB
1763 depends on CPU_CAVIUM_OCTEON
1765 Using 32kB page size will result in higher performance kernel at
1766 the price of higher memory consumption. This option is available
1767 only on cnMIPS cores. Note that you will need a suitable Linux
1768 distribution to support this.
1770 config PAGE_SIZE_64KB
1772 depends on !CPU_R3000 && !CPU_TX39XX
1774 Using 64kB page size will result in higher performance kernel at
1775 the price of higher memory consumption. This option is available on
1776 all non-R3000 family processor. Not that at the time of this
1777 writing this option is still high experimental.
1781 config FORCE_MAX_ZONEORDER
1782 int "Maximum zone order"
1783 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1784 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1785 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1786 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1787 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1788 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1792 The kernel memory allocator divides physically contiguous memory
1793 blocks into "zones", where each zone is a power of two number of
1794 pages. This option selects the largest power of two that the kernel
1795 keeps in the memory allocator. If you need to allocate very large
1796 blocks of physically contiguous memory, then you may need to
1797 increase this value.
1799 This config option is actually maximum order plus one. For example,
1800 a value of 11 means that the largest free memory block is 2^10 pages.
1802 The page size is not necessarily 4KB. Keep this in mind
1803 when choosing a value for this option.
1806 bool "Use GIC global counter for clock events"
1807 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1809 Use the GIC global counter for the clock events. The R4K clock
1810 event driver is always present, so if the platform ends up not
1811 detecting a GIC, it will fall back to the R4K timer for the
1812 generation of clock events.
1817 config IP22_CPU_SCACHE
1822 # Support for a MIPS32 / MIPS64 style S-caches
1824 config MIPS_CPU_SCACHE
1827 select MIPS_L1_CACHE_SHIFT_6
1829 config R5000_CPU_SCACHE
1833 config RM7000_CPU_SCACHE
1837 config SIBYTE_DMA_PAGEOPS
1838 bool "Use DMA to clear/copy pages"
1841 Instead of using the CPU to zero and copy pages, use a Data Mover
1842 channel. These DMA channels are otherwise unused by the standard
1843 SiByte Linux port. Seems to give a small performance benefit.
1845 config CPU_HAS_PREFETCH
1848 config CPU_GENERIC_DUMP_TLB
1850 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1854 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1856 config CPU_R4K_CACHE_TLB
1858 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1861 prompt "MIPS MT options"
1863 config MIPS_MT_DISABLED
1864 bool "Disable multithreading support"
1866 Use this option if your platform does not support the MT ASE
1867 which is hardware multithreading support. On systems without
1868 an MT-enabled processor, this will be the only option that is
1869 available in this menu.
1872 bool "Use 1 TC on each available VPE for SMP"
1873 depends on SYS_SUPPORTS_MULTITHREADING
1874 select CPU_MIPSR2_IRQ_VI
1875 select CPU_MIPSR2_IRQ_EI
1880 select SYS_SUPPORTS_SMP
1881 select SYS_SUPPORTS_SCHED_SMT
1882 select MIPS_PERF_SHARED_TC_COUNTERS
1884 This is a kernel model which is known as SMVP. This is supported
1885 on cores with the MT ASE and uses the available VPEs to implement
1886 virtual processors which supports SMP. This is equivalent to the
1887 Intel Hyperthreading feature. For further information go to
1888 <http://www.imgtec.com/mips/mips-multithreading.asp>.
1891 bool "Use all TCs on all VPEs for SMP (DEPRECATED)"
1892 depends on CPU_MIPS32_R2
1893 depends on SYS_SUPPORTS_MULTITHREADING
1894 depends on !MIPS_CPS
1895 select CPU_MIPSR2_IRQ_VI
1896 select CPU_MIPSR2_IRQ_EI
1900 select SYS_SUPPORTS_SMP
1901 select NR_CPUS_DEFAULT_8
1903 This is a kernel model which is known as SMTC. This is
1904 supported on cores with the MT ASE and presents all TCs
1905 available on all VPEs to support SMP. For further
1906 information see <http://www.linux-mips.org/wiki/34K#SMTC>.
1914 bool "SMT (multithreading) scheduler support"
1915 depends on SYS_SUPPORTS_SCHED_SMT
1918 SMT scheduler support improves the CPU scheduler's decision making
1919 when dealing with MIPS MT enabled cores at a cost of slightly
1920 increased overhead in some places. If unsure say N here.
1922 config SYS_SUPPORTS_SCHED_SMT
1925 config SYS_SUPPORTS_MULTITHREADING
1928 config MIPS_MT_FPAFF
1929 bool "Dynamic FPU affinity for FP-intensive threads"
1931 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1933 config MIPS_VPE_LOADER
1934 bool "VPE loader support."
1935 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1936 select CPU_MIPSR2_IRQ_VI
1937 select CPU_MIPSR2_IRQ_EI
1940 Includes a loader for loading an elf relocatable object
1941 onto another VPE and running it.
1943 config MIPS_VPE_LOADER_CMP
1946 depends on MIPS_VPE_LOADER && MIPS_CMP
1948 config MIPS_VPE_LOADER_MT
1951 depends on MIPS_VPE_LOADER && !MIPS_CMP
1953 config MIPS_MT_SMTC_IM_BACKSTOP
1954 bool "Use per-TC register bits as backstop for inhibited IM bits"
1955 depends on MIPS_MT_SMTC
1958 To support multiple TC microthreads acting as "CPUs" within
1959 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1960 during interrupt handling. To support legacy drivers and interrupt
1961 controller management code, SMTC has a "backstop" to track and
1962 if necessary restore the interrupt mask. This has some performance
1963 impact on interrupt service overhead.
1965 config MIPS_MT_SMTC_IRQAFF
1966 bool "Support IRQ affinity API"
1967 depends on MIPS_MT_SMTC
1970 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1971 for SMTC Linux kernel. Requires platform support, of which
1972 an example can be found in the MIPS kernel i8259 and Malta
1973 platform code. Adds some overhead to interrupt dispatch, and
1974 should be used only if you know what you are doing.
1976 config MIPS_VPE_LOADER_TOM
1977 bool "Load VPE program into memory hidden from linux"
1978 depends on MIPS_VPE_LOADER
1981 The loader can use memory that is present but has been hidden from
1982 Linux using the kernel command line option "mem=xxMB". It's up to
1983 you to ensure the amount you put in the option and the space your
1984 program requires is less or equal to the amount physically present.
1986 config MIPS_VPE_APSP_API
1987 bool "Enable support for AP/SP API (RTLX)"
1988 depends on MIPS_VPE_LOADER
1991 config MIPS_VPE_APSP_API_CMP
1994 depends on MIPS_VPE_APSP_API && MIPS_CMP
1996 config MIPS_VPE_APSP_API_MT
1999 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2002 bool "MIPS CMP support"
2003 depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP
2006 select WEAK_ORDERING
2009 Enable Coherency Manager processor (CMP) support.
2012 bool "MIPS Coherent Processing System support"
2013 depends on SYS_SUPPORTS_MIPS_CPS
2018 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2019 select SYS_SUPPORTS_SMP
2020 select WEAK_ORDERING
2022 Select this if you wish to run an SMP kernel across multiple cores
2023 within a MIPS Coherent Processing System. When this option is
2024 enabled the kernel will probe for other cores and boot them with
2025 no external assistance. It is safe to enable this when hardware
2026 support is unavailable.
2037 config SB1_PASS_1_WORKAROUNDS
2039 depends on CPU_SB1_PASS_1
2042 config SB1_PASS_2_WORKAROUNDS
2044 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2047 config SB1_PASS_2_1_WORKAROUNDS
2049 depends on CPU_SB1 && CPU_SB1_PASS_2
2053 config 64BIT_PHYS_ADDR
2056 config ARCH_PHYS_ADDR_T_64BIT
2057 def_bool 64BIT_PHYS_ADDR
2059 config CPU_HAS_SMARTMIPS
2060 depends on SYS_SUPPORTS_SMARTMIPS
2061 bool "Support for the SmartMIPS ASE"
2063 SmartMIPS is a extension of the MIPS32 architecture aimed at
2064 increased security at both hardware and software level for
2065 smartcards. Enabling this option will allow proper use of the
2066 SmartMIPS instructions by Linux applications. However a kernel with
2067 this option will not work on a MIPS core without SmartMIPS core. If
2068 you don't know you probably don't have SmartMIPS and should say N
2071 config CPU_MICROMIPS
2072 depends on SYS_SUPPORTS_MICROMIPS
2073 bool "Build kernel using microMIPS ISA"
2075 When this option is enabled the kernel will be built using the
2085 # Vectored interrupt mode is an R2 feature
2087 config CPU_MIPSR2_IRQ_VI
2091 # Extended interrupt mode is an R2 feature
2093 config CPU_MIPSR2_IRQ_EI
2098 depends on !CPU_R3000
2104 config CPU_DADDI_WORKAROUNDS
2107 config CPU_R4000_WORKAROUNDS
2109 select CPU_R4400_WORKAROUNDS
2111 config CPU_R4400_WORKAROUNDS
2115 # - Highmem only makes sense for the 32-bit kernel.
2116 # - The current highmem code will only work properly on physically indexed
2117 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2118 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2119 # moment we protect the user and offer the highmem option only on machines
2120 # where it's known to be safe. This will not offer highmem on a few systems
2121 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2122 # indexed CPUs but we're playing safe.
2123 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2124 # know they might have memory configurations that could make use of highmem
2128 bool "High Memory Support"
2129 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2131 config CPU_SUPPORTS_HIGHMEM
2134 config SYS_SUPPORTS_HIGHMEM
2137 config SYS_SUPPORTS_SMARTMIPS
2140 config SYS_SUPPORTS_MICROMIPS
2143 config ARCH_FLATMEM_ENABLE
2145 depends on !NUMA && !CPU_LOONGSON2
2147 config ARCH_DISCONTIGMEM_ENABLE
2149 default y if SGI_IP27
2151 Say Y to support efficient handling of discontiguous physical memory,
2152 for architectures which are either NUMA (Non-Uniform Memory Access)
2153 or have huge holes in the physical address space for other reasons.
2154 See <file:Documentation/vm/numa> for more.
2156 config ARCH_SPARSEMEM_ENABLE
2158 select SPARSEMEM_STATIC
2162 depends on SYS_SUPPORTS_NUMA
2164 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2165 Access). This option improves performance on systems with more
2166 than two nodes; on two node systems it is generally better to
2167 leave it disabled; on single node systems disable this option
2170 config SYS_SUPPORTS_NUMA
2176 depends on NEED_MULTIPLE_NODES
2178 config HW_PERF_EVENTS
2179 bool "Enable hardware performance counter support for perf events"
2180 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2183 Enable hardware performance counter support for perf events. If
2184 disabled, perf events will use software events only.
2189 bool "Multi-Processing support"
2190 depends on SYS_SUPPORTS_SMP
2192 This enables support for systems with more than one CPU. If you have
2193 a system with only one CPU, say N. If you have a system with more
2194 than one CPU, say Y.
2196 If you say N here, the kernel will run on uni- and multiprocessor
2197 machines, but will use only one CPU of a multiprocessor machine. If
2198 you say Y here, the kernel will run on many, but not all,
2199 uniprocessor machines. On a uniprocessor machine, the kernel
2200 will run faster if you say N here.
2202 People using multiprocessor machines who say Y here should also say
2203 Y to "Enhanced Real Time Clock Support", below.
2205 See also the SMP-HOWTO available at
2206 <http://www.tldp.org/docs.html#howto>.
2208 If you don't know what to do here, say N.
2213 config SYS_SUPPORTS_MIPS_CMP
2216 config SYS_SUPPORTS_MIPS_CPS
2219 config SYS_SUPPORTS_SMP
2222 config NR_CPUS_DEFAULT_4
2225 config NR_CPUS_DEFAULT_8
2228 config NR_CPUS_DEFAULT_16
2231 config NR_CPUS_DEFAULT_32
2234 config NR_CPUS_DEFAULT_64
2238 int "Maximum number of CPUs (2-64)"
2241 default "4" if NR_CPUS_DEFAULT_4
2242 default "8" if NR_CPUS_DEFAULT_8
2243 default "16" if NR_CPUS_DEFAULT_16
2244 default "32" if NR_CPUS_DEFAULT_32
2245 default "64" if NR_CPUS_DEFAULT_64
2247 This allows you to specify the maximum number of CPUs which this
2248 kernel will support. The maximum supported value is 32 for 32-bit
2249 kernel and 64 for 64-bit kernels; the minimum value which makes
2250 sense is 1 for Qemu (useful only for kernel debugging purposes)
2251 and 2 for all others.
2253 This is purely to save memory - each supported CPU adds
2254 approximately eight kilobytes to the kernel image. For best
2255 performance should round up your number of processors to the next
2258 config MIPS_PERF_SHARED_TC_COUNTERS
2262 # Timer Interrupt Frequency Configuration
2266 prompt "Timer frequency"
2269 Allows the configuration of the timer frequency.
2272 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2275 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2278 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2281 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2284 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2287 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2290 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2294 config SYS_SUPPORTS_48HZ
2297 config SYS_SUPPORTS_100HZ
2300 config SYS_SUPPORTS_128HZ
2303 config SYS_SUPPORTS_250HZ
2306 config SYS_SUPPORTS_256HZ
2309 config SYS_SUPPORTS_1000HZ
2312 config SYS_SUPPORTS_1024HZ
2315 config SYS_SUPPORTS_ARBIT_HZ
2317 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2318 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2319 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2320 !SYS_SUPPORTS_1024HZ
2325 default 100 if HZ_100
2326 default 128 if HZ_128
2327 default 250 if HZ_250
2328 default 256 if HZ_256
2329 default 1000 if HZ_1000
2330 default 1024 if HZ_1024
2332 source "kernel/Kconfig.preempt"
2335 bool "Kexec system call"
2337 kexec is a system call that implements the ability to shutdown your
2338 current kernel, and to start another kernel. It is like a reboot
2339 but it is independent of the system firmware. And like a reboot
2340 you can start any kernel with it, not just Linux.
2342 The name comes from the similarity to the exec system call.
2344 It is an ongoing process to be certain the hardware in a machine
2345 is properly shutdown, so do not be surprised if this code does not
2346 initially work for you. As of this writing the exact hardware
2347 interface is strongly in flux, so no good recommendation can be
2351 bool "Kernel crash dumps"
2353 Generate crash dump after being started by kexec.
2354 This should be normally only set in special crash dump kernels
2355 which are loaded in the main kernel with kexec-tools into
2356 a specially reserved region and then later executed after
2357 a crash by kdump/kexec. The crash dump kernel must be compiled
2358 to a memory address not used by the main kernel or firmware using
2361 config PHYSICAL_START
2362 hex "Physical address where the kernel is loaded"
2363 default "0xffffffff84000000" if 64BIT
2364 default "0x84000000" if 32BIT
2365 depends on CRASH_DUMP
2367 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2368 If you plan to use kernel for capturing the crash dump change
2369 this value to start of the reserved region (the "X" value as
2370 specified in the "crashkernel=YM@XM" command line boot parameter
2371 passed to the panic-ed kernel).
2374 bool "Enable seccomp to safely compute untrusted bytecode"
2378 This kernel feature is useful for number crunching applications
2379 that may need to compute untrusted bytecode during their
2380 execution. By using pipes or other transports made available to
2381 the process as file descriptors supporting the read/write
2382 syscalls, it's possible to isolate those applications in
2383 their own address space using seccomp. Once seccomp is
2384 enabled via /proc/<pid>/seccomp, it cannot be disabled
2385 and the task is only allowed to execute a few safe syscalls
2386 defined by each seccomp mode.
2388 If unsure, say Y. Only embedded should say N here.
2390 config MIPS_O32_FP64_SUPPORT
2391 bool "Support for O32 binaries using 64-bit FP"
2392 depends on 32BIT || MIPS32_O32
2395 When this is enabled, the kernel will support use of 64-bit floating
2396 point registers with binaries using the O32 ABI along with the
2397 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2398 32-bit MIPS systems this support is at the cost of increasing the
2399 size and complexity of the compiled FPU emulator. Thus if you are
2400 running a MIPS32 system and know that none of your userland binaries
2401 will require 64-bit floating point, you may wish to reduce the size
2402 of your kernel & potentially improve FP emulation performance by
2410 select OF_EARLY_FLATTREE
2415 config LOCKDEP_SUPPORT
2419 config STACKTRACE_SUPPORT
2423 source "init/Kconfig"
2425 source "kernel/Kconfig.freezer"
2427 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2435 bool "Support for PCI controller"
2436 depends on HW_HAS_PCI
2438 select NO_GENERIC_PCI_IOPORT_MAP
2440 Find out whether you have a PCI motherboard. PCI is the name of a
2441 bus system, i.e. the way the CPU talks to the other stuff inside
2442 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2448 source "drivers/pci/Kconfig"
2450 source "drivers/pci/pcie/Kconfig"
2453 # ISA support is now enabled via select. Too many systems still have the one
2454 # or other ISA chip on the board that users don't know about so don't expect
2455 # users to choose the right thing ...
2462 depends on HW_HAS_EISA
2464 select GENERIC_ISA_DMA
2466 The Extended Industry Standard Architecture (EISA) bus was
2467 developed as an open alternative to the IBM MicroChannel bus.
2469 The EISA bus provided some of the features of the IBM MicroChannel
2470 bus while maintaining backward compatibility with cards made for
2471 the older ISA bus. The EISA bus saw limited use between 1988 and
2472 1995 when it was made obsolete by the PCI bus.
2474 Say Y here if you are building a kernel for an EISA-based machine.
2478 source "drivers/eisa/Kconfig"
2481 bool "TURBOchannel support"
2482 depends on MACH_DECSTATION
2484 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2485 processors. TURBOchannel programming specifications are available
2487 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2489 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2490 Linux driver support status is documented at:
2491 <http://www.linux-mips.org/wiki/DECstation>
2501 select MIPS_EXTERNAL_TIMER
2509 source "drivers/pcmcia/Kconfig"
2511 source "drivers/pci/hotplug/Kconfig"
2514 tristate "RapidIO support"
2518 If you say Y here, the kernel will include drivers and
2519 infrastructure code to support RapidIO interconnect devices.
2521 source "drivers/rapidio/Kconfig"
2525 menu "Executable file formats"
2527 source "fs/Kconfig.binfmt"
2532 config MIPS32_COMPAT
2533 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2536 Select this option if you want Linux/MIPS 32-bit binary
2537 compatibility. Since all software available for Linux/MIPS is
2538 currently 32-bit you should say Y here.
2542 depends on MIPS32_COMPAT
2543 select ARCH_WANT_OLD_COMPAT_IPC
2546 config SYSVIPC_COMPAT
2548 depends on COMPAT && SYSVIPC
2552 bool "Kernel support for o32 binaries"
2553 depends on MIPS32_COMPAT
2555 Select this option if you want to run o32 binaries. These are pure
2556 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2557 existing binaries are in this format.
2562 bool "Kernel support for n32 binaries"
2563 depends on MIPS32_COMPAT
2565 Select this option if you want to run n32 binaries. These are
2566 64-bit binaries using 32-bit quantities for addressing and certain
2567 data that would normally be 64-bit. They are used in special
2574 default y if MIPS32_O32 || MIPS32_N32
2578 menu "Power management options"
2580 config ARCH_HIBERNATION_POSSIBLE
2582 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2584 config ARCH_SUSPEND_POSSIBLE
2586 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2588 source "kernel/power/Kconfig"
2592 config MIPS_EXTERNAL_TIMER
2595 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2596 menu "CPU Power Management"
2597 source "drivers/cpufreq/Kconfig"
2601 source "net/Kconfig"
2603 source "drivers/Kconfig"
2605 source "drivers/firmware/Kconfig"
2609 source "arch/mips/Kconfig.debug"
2611 source "security/Kconfig"
2613 source "crypto/Kconfig"
2615 source "lib/Kconfig"
2617 source "arch/mips/kvm/Kconfig"