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_MULTITHREADING
333 select SYS_SUPPORTS_SMARTMIPS
334 select SYS_SUPPORTS_ZBOOT
336 This enables support for the MIPS Technologies Malta evaluation
340 bool "MIPS SEAD3 board"
346 select CPU_MIPSR2_IRQ_VI
347 select CPU_MIPSR2_IRQ_EI
348 select DMA_NONCOHERENT
353 select SYS_HAS_CPU_MIPS32_R1
354 select SYS_HAS_CPU_MIPS32_R2
355 select SYS_HAS_CPU_MIPS64_R1
356 select SYS_HAS_EARLY_PRINTK
357 select SYS_SUPPORTS_32BIT_KERNEL
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_BIG_ENDIAN
360 select SYS_SUPPORTS_LITTLE_ENDIAN
361 select SYS_SUPPORTS_SMARTMIPS
362 select SYS_SUPPORTS_MICROMIPS
363 select USB_ARCH_HAS_EHCI
364 select USB_EHCI_BIG_ENDIAN_DESC
365 select USB_EHCI_BIG_ENDIAN_MMIO
368 This enables support for the MIPS Technologies SEAD3 evaluation
372 bool "NEC EMMA2RH Mark-eins board"
376 This enables support for the NEC Electronics Mark-eins boards.
379 bool "NEC VR4100 series based machines"
382 select SYS_HAS_CPU_VR41XX
383 select ARCH_REQUIRE_GPIOLIB
386 bool "NXP STB220 board"
389 Support for NXP Semiconductors STB220 Development Board.
396 Support for NXP Semiconductors STB225 Development Board.
399 bool "PMC-Sierra MSP chipsets"
402 select DMA_NONCOHERENT
404 select NO_EXCEPT_FILL
406 select SYS_HAS_CPU_MIPS32_R1
407 select SYS_HAS_CPU_MIPS32_R2
408 select SYS_SUPPORTS_32BIT_KERNEL
409 select SYS_SUPPORTS_BIG_ENDIAN
412 select SERIAL_8250_CONSOLE
413 select USB_EHCI_BIG_ENDIAN_MMIO
414 select USB_EHCI_BIG_ENDIAN_DESC
416 This adds support for the PMC-Sierra family of Multi-Service
417 Processor System-On-A-Chips. These parts include a number
418 of integrated peripherals, interfaces and DSPs in addition to
419 a variety of MIPS cores.
422 bool "Ralink based machines"
426 select DMA_NONCOHERENT
429 select SYS_HAS_CPU_MIPS32_R1
430 select SYS_HAS_CPU_MIPS32_R2
431 select SYS_SUPPORTS_32BIT_KERNEL
432 select SYS_SUPPORTS_LITTLE_ENDIAN
433 select SYS_HAS_EARLY_PRINTK
434 select HAVE_MACH_CLKDEV
436 select ARCH_HAS_RESET_CONTROLLER
437 select RESET_CONTROLLER
440 bool "SGI IP22 (Indy/Indigo2)"
446 select DEFAULT_SGI_PARTITION
447 select DMA_NONCOHERENT
451 select IP22_CPU_SCACHE
453 select GENERIC_ISA_DMA_SUPPORT_BROKEN
455 select SGI_HAS_INDYDOG
461 select SYS_HAS_CPU_R4X00
462 select SYS_HAS_CPU_R5000
464 # Disable EARLY_PRINTK for now since it leads to overwritten prom
465 # memory during early boot on some machines.
467 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
468 # for a more details discussion
470 # select SYS_HAS_EARLY_PRINTK
471 select SYS_SUPPORTS_32BIT_KERNEL
472 select SYS_SUPPORTS_64BIT_KERNEL
473 select SYS_SUPPORTS_BIG_ENDIAN
474 select MIPS_L1_CACHE_SHIFT_7
476 This are the SGI Indy, Challenge S and Indigo2, as well as certain
477 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
478 that runs on these, say Y here.
481 bool "SGI IP27 (Origin200/2000)"
485 select DEFAULT_SGI_PARTITION
487 select SYS_HAS_EARLY_PRINTK
489 select NR_CPUS_DEFAULT_64
490 select SYS_HAS_CPU_R10000
491 select SYS_SUPPORTS_64BIT_KERNEL
492 select SYS_SUPPORTS_BIG_ENDIAN
493 select SYS_SUPPORTS_NUMA
494 select SYS_SUPPORTS_SMP
495 select MIPS_L1_CACHE_SHIFT_7
497 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
498 workstations. To compile a Linux kernel that runs on these, say Y
502 bool "SGI IP28 (Indigo2 R10k)"
508 select DEFAULT_SGI_PARTITION
509 select DMA_NONCOHERENT
510 select GENERIC_ISA_DMA_SUPPORT_BROKEN
516 select SGI_HAS_INDYDOG
522 select SYS_HAS_CPU_R10000
524 # Disable EARLY_PRINTK for now since it leads to overwritten prom
525 # memory during early boot on some machines.
527 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
528 # for a more details discussion
530 # select SYS_HAS_EARLY_PRINTK
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
534 This is the SGI Indigo2 with R10000 processor. To compile a Linux
535 kernel that runs on these, say Y here.
544 select DMA_NONCOHERENT
547 select R5000_CPU_SCACHE
548 select RM7000_CPU_SCACHE
549 select SYS_HAS_CPU_R5000
550 select SYS_HAS_CPU_R10000 if BROKEN
551 select SYS_HAS_CPU_RM7000
552 select SYS_HAS_CPU_NEVADA
553 select SYS_SUPPORTS_64BIT_KERNEL
554 select SYS_SUPPORTS_BIG_ENDIAN
556 If you want this kernel to run on SGI O2 workstation, say Y here.
559 bool "Sibyte BCM91120C-CRhine"
562 select SIBYTE_BCM1120
564 select SYS_HAS_CPU_SB1
565 select SYS_SUPPORTS_BIG_ENDIAN
566 select SYS_SUPPORTS_LITTLE_ENDIAN
569 bool "Sibyte BCM91120x-Carmel"
572 select SIBYTE_BCM1120
574 select SYS_HAS_CPU_SB1
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select SYS_SUPPORTS_LITTLE_ENDIAN
579 bool "Sibyte BCM91125C-CRhone"
582 select SIBYTE_BCM1125
584 select SYS_HAS_CPU_SB1
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_HIGHMEM
587 select SYS_SUPPORTS_LITTLE_ENDIAN
590 bool "Sibyte BCM91125E-Rhone"
593 select SIBYTE_BCM1125H
595 select SYS_HAS_CPU_SB1
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_LITTLE_ENDIAN
600 bool "Sibyte BCM91250A-SWARM"
603 select HAVE_PATA_PLATFORM
606 select SYS_HAS_CPU_SB1
607 select SYS_SUPPORTS_BIG_ENDIAN
608 select SYS_SUPPORTS_HIGHMEM
609 select SYS_SUPPORTS_LITTLE_ENDIAN
610 select ZONE_DMA32 if 64BIT
612 config SIBYTE_LITTLESUR
613 bool "Sibyte BCM91250C2-LittleSur"
616 select HAVE_PATA_PLATFORM
619 select SYS_HAS_CPU_SB1
620 select SYS_SUPPORTS_BIG_ENDIAN
621 select SYS_SUPPORTS_HIGHMEM
622 select SYS_SUPPORTS_LITTLE_ENDIAN
624 config SIBYTE_SENTOSA
625 bool "Sibyte BCM91250E-Sentosa"
630 select SYS_HAS_CPU_SB1
631 select SYS_SUPPORTS_BIG_ENDIAN
632 select SYS_SUPPORTS_LITTLE_ENDIAN
635 bool "Sibyte BCM91480B-BigSur"
638 select NR_CPUS_DEFAULT_4
639 select SIBYTE_BCM1x80
641 select SYS_HAS_CPU_SB1
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select SYS_SUPPORTS_HIGHMEM
644 select SYS_SUPPORTS_LITTLE_ENDIAN
645 select ZONE_DMA32 if 64BIT
648 bool "SNI RM200/300/400"
649 select FW_ARC if CPU_LITTLE_ENDIAN
650 select FW_ARC32 if CPU_LITTLE_ENDIAN
651 select FW_SNIPROM if CPU_BIG_ENDIAN
652 select ARCH_MAY_HAVE_PC_FDC
656 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
657 select DMA_NONCOHERENT
658 select GENERIC_ISA_DMA
659 select HAVE_PCSPKR_PLATFORM
666 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
667 select SYS_HAS_CPU_R4X00
668 select SYS_HAS_CPU_R5000
669 select SYS_HAS_CPU_R10000
670 select R5000_CPU_SCACHE
671 select SYS_HAS_EARLY_PRINTK
672 select SYS_SUPPORTS_32BIT_KERNEL
673 select SYS_SUPPORTS_64BIT_KERNEL
674 select SYS_SUPPORTS_BIG_ENDIAN
675 select SYS_SUPPORTS_HIGHMEM
676 select SYS_SUPPORTS_LITTLE_ENDIAN
678 The SNI RM200/300/400 are MIPS-based machines manufactured by
679 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
680 Technology and now in turn merged with Fujitsu. Say Y here to
681 support this machine type.
684 bool "Toshiba TX39 series based machines"
687 bool "Toshiba TX49 series based machines"
689 config MIKROTIK_RB532
690 bool "Mikrotik RB532 boards"
693 select DMA_NONCOHERENT
696 select SYS_HAS_CPU_MIPS32_R1
697 select SYS_SUPPORTS_32BIT_KERNEL
698 select SYS_SUPPORTS_LITTLE_ENDIAN
701 select ARCH_REQUIRE_GPIOLIB
702 select MIPS_L1_CACHE_SHIFT_4
704 Support the Mikrotik(tm) RouterBoard 532 series,
705 based on the IDT RC32434 SoC.
707 config CAVIUM_OCTEON_SOC
708 bool "Cavium Networks Octeon SoC based boards"
710 select 64BIT_PHYS_ADDR
712 select SYS_SUPPORTS_64BIT_KERNEL
713 select SYS_SUPPORTS_BIG_ENDIAN
715 select SYS_SUPPORTS_HOTPLUG_CPU
716 select SYS_HAS_EARLY_PRINTK
717 select SYS_HAS_CPU_CAVIUM_OCTEON
721 select USB_ARCH_HAS_OHCI
722 select USB_ARCH_HAS_EHCI
724 select ARCH_REQUIRE_GPIOLIB
726 This option supports all of the Octeon reference boards from Cavium
727 Networks. It builds a kernel that dynamically determines the Octeon
728 CPU type and supports all known board reference implementations.
729 Some of the supported boards are:
736 Say Y here for most Octeon reference boards.
739 bool "Netlogic XLR/XLS based systems"
742 select SYS_HAS_CPU_XLR
743 select SYS_SUPPORTS_SMP
746 select SYS_SUPPORTS_32BIT_KERNEL
747 select SYS_SUPPORTS_64BIT_KERNEL
748 select 64BIT_PHYS_ADDR
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_HIGHMEM
752 select NR_CPUS_DEFAULT_32
756 select ZONE_DMA32 if 64BIT
758 select SYS_HAS_EARLY_PRINTK
759 select USB_ARCH_HAS_OHCI if USB_SUPPORT
760 select USB_ARCH_HAS_EHCI if USB_SUPPORT
761 select SYS_SUPPORTS_ZBOOT
762 select SYS_SUPPORTS_ZBOOT_UART16550
764 Support for systems based on Netlogic XLR and XLS processors.
765 Say Y here if you have a XLR or XLS based board.
768 bool "Netlogic XLP based systems"
771 select SYS_HAS_CPU_XLP
772 select SYS_SUPPORTS_SMP
774 select SYS_SUPPORTS_32BIT_KERNEL
775 select SYS_SUPPORTS_64BIT_KERNEL
776 select 64BIT_PHYS_ADDR
777 select SYS_SUPPORTS_BIG_ENDIAN
778 select SYS_SUPPORTS_LITTLE_ENDIAN
779 select SYS_SUPPORTS_HIGHMEM
781 select NR_CPUS_DEFAULT_32
785 select ARCH_SUPPORTS_MSI
786 select ZONE_DMA32 if 64BIT
788 select SYS_HAS_EARLY_PRINTK
790 select SYS_SUPPORTS_ZBOOT
791 select SYS_SUPPORTS_ZBOOT_UART16550
793 This board is based on Netlogic XLP Processor.
794 Say Y here if you have a XLP based board.
798 source "arch/mips/alchemy/Kconfig"
799 source "arch/mips/ath79/Kconfig"
800 source "arch/mips/bcm47xx/Kconfig"
801 source "arch/mips/bcm63xx/Kconfig"
802 source "arch/mips/jazz/Kconfig"
803 source "arch/mips/jz4740/Kconfig"
804 source "arch/mips/lantiq/Kconfig"
805 source "arch/mips/lasat/Kconfig"
806 source "arch/mips/pmcs-msp71xx/Kconfig"
807 source "arch/mips/ralink/Kconfig"
808 source "arch/mips/sgi-ip27/Kconfig"
809 source "arch/mips/sibyte/Kconfig"
810 source "arch/mips/txx9/Kconfig"
811 source "arch/mips/vr41xx/Kconfig"
812 source "arch/mips/cavium-octeon/Kconfig"
813 source "arch/mips/loongson/Kconfig"
814 source "arch/mips/loongson1/Kconfig"
815 source "arch/mips/netlogic/Kconfig"
819 config RWSEM_GENERIC_SPINLOCK
823 config RWSEM_XCHGADD_ALGORITHM
826 config ARCH_HAS_ILOG2_U32
830 config ARCH_HAS_ILOG2_U64
834 config GENERIC_HWEIGHT
838 config GENERIC_CALIBRATE_DELAY
842 config SCHED_OMIT_FRAME_POINTER
847 # Select some configuration options automatically based on user selections.
852 config ARCH_MAY_HAVE_PC_FDC
895 select ARCH_REQUIRE_GPIOLIB
901 config ARCH_DMA_ADDR_T_64BIT
902 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
904 config DMA_MAYBE_COHERENT
905 select DMA_NONCOHERENT
911 config DMA_NONCOHERENT
913 select NEED_DMA_MAP_STATE
915 config NEED_DMA_MAP_STATE
918 config SYS_HAS_EARLY_PRINTK
922 bool "Support for hot-pluggable CPUs"
923 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
925 Say Y here to allow turning CPUs off and on. CPUs can be
926 controlled through /sys/devices/system/cpu.
927 (Note: power management support will enable this option
928 automatically on SMP systems. )
929 Say N if you want to disable CPU hotplug.
931 config SYS_SUPPORTS_HOTPLUG_CPU
955 config GENERIC_ISA_DMA
957 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
960 config GENERIC_ISA_DMA_SUPPORT_BROKEN
962 select GENERIC_ISA_DMA
971 # Endianness selection. Sufficiently obscure so many users don't know what to
972 # answer,so we try hard to limit the available choices. Also the use of a
973 # choice statement should be more obvious to the user.
976 prompt "Endianness selection"
978 Some MIPS machines can be configured for either little or big endian
979 byte order. These modes require different kernels and a different
980 Linux distribution. In general there is one preferred byteorder for a
981 particular system but some systems are just as commonly used in the
982 one or the other endianness.
984 config CPU_BIG_ENDIAN
986 depends on SYS_SUPPORTS_BIG_ENDIAN
988 config CPU_LITTLE_ENDIAN
990 depends on SYS_SUPPORTS_LITTLE_ENDIAN
997 config SYS_SUPPORTS_APM_EMULATION
1000 config SYS_SUPPORTS_BIG_ENDIAN
1003 config SYS_SUPPORTS_LITTLE_ENDIAN
1006 config SYS_SUPPORTS_HUGETLBFS
1008 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1011 config MIPS_HUGE_TLB_SUPPORT
1012 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1035 config PCI_GT64XXX_PCI0
1038 config NO_EXCEPT_FILL
1045 select DMA_NONCOHERENT
1047 select SWAP_IO_SPACE
1048 select SYS_HAS_CPU_R5500
1049 select SYS_SUPPORTS_32BIT_KERNEL
1050 select SYS_SUPPORTS_64BIT_KERNEL
1051 select SYS_SUPPORTS_BIG_ENDIAN
1058 select DMA_NONCOHERENT
1059 select SYS_HAS_CPU_MIPS32_R2
1060 select SYS_SUPPORTS_32BIT_KERNEL
1061 select SYS_SUPPORTS_LITTLE_ENDIAN
1062 select SYS_SUPPORTS_BIG_ENDIAN
1063 select CPU_MIPSR2_IRQ_VI
1069 config SWAP_IO_SPACE
1072 config SGI_HAS_INDYDOG
1084 config SGI_HAS_ZILOG
1087 config SGI_HAS_I8042
1090 config DEFAULT_SGI_PARTITION
1102 config MIPS_L1_CACHE_SHIFT_4
1105 config MIPS_L1_CACHE_SHIFT_5
1108 config MIPS_L1_CACHE_SHIFT_6
1111 config MIPS_L1_CACHE_SHIFT_7
1114 config MIPS_L1_CACHE_SHIFT
1116 default "4" if MIPS_L1_CACHE_SHIFT_4
1117 default "5" if MIPS_L1_CACHE_SHIFT_5
1118 default "6" if MIPS_L1_CACHE_SHIFT_6
1119 default "7" if MIPS_L1_CACHE_SHIFT_7
1122 config HAVE_STD_PC_SERIAL_PORT
1126 bool "ARC console support"
1127 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1131 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1136 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1145 menu "CPU selection"
1151 config CPU_LOONGSON2E
1153 depends on SYS_HAS_CPU_LOONGSON2E
1154 select CPU_LOONGSON2
1156 The Loongson 2E processor implements the MIPS III instruction set
1157 with many extensions.
1159 It has an internal FPGA northbridge, which is compatible to
1162 config CPU_LOONGSON2F
1164 depends on SYS_HAS_CPU_LOONGSON2F
1165 select CPU_LOONGSON2
1166 select ARCH_REQUIRE_GPIOLIB
1168 The Loongson 2F processor implements the MIPS III instruction set
1169 with many extensions.
1171 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1172 have a similar programming interface with FPGA northbridge used in
1175 config CPU_LOONGSON1B
1177 depends on SYS_HAS_CPU_LOONGSON1B
1178 select CPU_LOONGSON1
1180 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1181 release 2 instruction set.
1183 config CPU_MIPS32_R1
1184 bool "MIPS32 Release 1"
1185 depends on SYS_HAS_CPU_MIPS32_R1
1186 select CPU_HAS_PREFETCH
1187 select CPU_SUPPORTS_32BIT_KERNEL
1188 select CPU_SUPPORTS_HIGHMEM
1190 Choose this option to build a kernel for release 1 or later of the
1191 MIPS32 architecture. Most modern embedded systems with a 32-bit
1192 MIPS processor are based on a MIPS32 processor. If you know the
1193 specific type of processor in your system, choose those that one
1194 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1195 Release 2 of the MIPS32 architecture is available since several
1196 years so chances are you even have a MIPS32 Release 2 processor
1197 in which case you should choose CPU_MIPS32_R2 instead for better
1200 config CPU_MIPS32_R2
1201 bool "MIPS32 Release 2"
1202 depends on SYS_HAS_CPU_MIPS32_R2
1203 select CPU_HAS_PREFETCH
1204 select CPU_SUPPORTS_32BIT_KERNEL
1205 select CPU_SUPPORTS_HIGHMEM
1208 Choose this option to build a kernel for release 2 or later of the
1209 MIPS32 architecture. Most modern embedded systems with a 32-bit
1210 MIPS processor are based on a MIPS32 processor. If you know the
1211 specific type of processor in your system, choose those that one
1212 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1214 config CPU_MIPS64_R1
1215 bool "MIPS64 Release 1"
1216 depends on SYS_HAS_CPU_MIPS64_R1
1217 select CPU_HAS_PREFETCH
1218 select CPU_SUPPORTS_32BIT_KERNEL
1219 select CPU_SUPPORTS_64BIT_KERNEL
1220 select CPU_SUPPORTS_HIGHMEM
1221 select CPU_SUPPORTS_HUGEPAGES
1223 Choose this option to build a kernel for release 1 or later of the
1224 MIPS64 architecture. Many modern embedded systems with a 64-bit
1225 MIPS processor are based on a MIPS64 processor. If you know the
1226 specific type of processor in your system, choose those that one
1227 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1228 Release 2 of the MIPS64 architecture is available since several
1229 years so chances are you even have a MIPS64 Release 2 processor
1230 in which case you should choose CPU_MIPS64_R2 instead for better
1233 config CPU_MIPS64_R2
1234 bool "MIPS64 Release 2"
1235 depends on SYS_HAS_CPU_MIPS64_R2
1236 select CPU_HAS_PREFETCH
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1239 select CPU_SUPPORTS_HIGHMEM
1240 select CPU_SUPPORTS_HUGEPAGES
1242 Choose this option to build a kernel for release 2 or later of the
1243 MIPS64 architecture. Many modern embedded systems with a 64-bit
1244 MIPS processor are based on a MIPS64 processor. If you know the
1245 specific type of processor in your system, choose those that one
1246 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1250 depends on SYS_HAS_CPU_R3000
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_HIGHMEM
1255 Please make sure to pick the right CPU type. Linux/MIPS is not
1256 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1257 *not* work on R4000 machines and vice versa. However, since most
1258 of the supported machines have an R4000 (or similar) CPU, R4x00
1259 might be a safe bet. If the resulting kernel does not work,
1260 try to recompile with R3000.
1264 depends on SYS_HAS_CPU_TX39XX
1265 select CPU_SUPPORTS_32BIT_KERNEL
1269 depends on SYS_HAS_CPU_VR41XX
1270 select CPU_SUPPORTS_32BIT_KERNEL
1271 select CPU_SUPPORTS_64BIT_KERNEL
1273 The options selects support for the NEC VR4100 series of processors.
1274 Only choose this option if you have one of these processors as a
1275 kernel built with this option will not run on any other type of
1276 processor or vice versa.
1280 depends on SYS_HAS_CPU_R4300
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_64BIT_KERNEL
1284 MIPS Technologies R4300-series processors.
1288 depends on SYS_HAS_CPU_R4X00
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_64BIT_KERNEL
1291 select CPU_SUPPORTS_HUGEPAGES
1293 MIPS Technologies R4000-series processors other than 4300, including
1294 the R4000, R4400, R4600, and 4700.
1298 depends on SYS_HAS_CPU_TX49XX
1299 select CPU_HAS_PREFETCH
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1302 select CPU_SUPPORTS_HUGEPAGES
1306 depends on SYS_HAS_CPU_R5000
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_64BIT_KERNEL
1309 select CPU_SUPPORTS_HUGEPAGES
1311 MIPS Technologies R5000-series processors other than the Nevada.
1315 depends on SYS_HAS_CPU_R5432
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1318 select CPU_SUPPORTS_HUGEPAGES
1322 depends on SYS_HAS_CPU_R5500
1323 select CPU_SUPPORTS_32BIT_KERNEL
1324 select CPU_SUPPORTS_64BIT_KERNEL
1325 select CPU_SUPPORTS_HUGEPAGES
1327 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1332 depends on SYS_HAS_CPU_R6000
1333 select CPU_SUPPORTS_32BIT_KERNEL
1335 MIPS Technologies R6000 and R6000A series processors. Note these
1336 processors are extremely rare and the support for them is incomplete.
1340 depends on SYS_HAS_CPU_NEVADA
1341 select CPU_SUPPORTS_32BIT_KERNEL
1342 select CPU_SUPPORTS_64BIT_KERNEL
1343 select CPU_SUPPORTS_HUGEPAGES
1345 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1349 depends on SYS_HAS_CPU_R8000
1350 select CPU_HAS_PREFETCH
1351 select CPU_SUPPORTS_64BIT_KERNEL
1353 MIPS Technologies R8000 processors. Note these processors are
1354 uncommon and the support for them is incomplete.
1358 depends on SYS_HAS_CPU_R10000
1359 select CPU_HAS_PREFETCH
1360 select CPU_SUPPORTS_32BIT_KERNEL
1361 select CPU_SUPPORTS_64BIT_KERNEL
1362 select CPU_SUPPORTS_HIGHMEM
1363 select CPU_SUPPORTS_HUGEPAGES
1365 MIPS Technologies R10000-series processors.
1369 depends on SYS_HAS_CPU_RM7000
1370 select CPU_HAS_PREFETCH
1371 select CPU_SUPPORTS_32BIT_KERNEL
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1374 select CPU_SUPPORTS_HUGEPAGES
1378 depends on SYS_HAS_CPU_SB1
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select CPU_SUPPORTS_64BIT_KERNEL
1381 select CPU_SUPPORTS_HIGHMEM
1382 select CPU_SUPPORTS_HUGEPAGES
1383 select WEAK_ORDERING
1385 config CPU_CAVIUM_OCTEON
1386 bool "Cavium Octeon processor"
1387 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1388 select ARCH_SPARSEMEM_ENABLE
1389 select CPU_HAS_PREFETCH
1390 select CPU_SUPPORTS_64BIT_KERNEL
1391 select SYS_SUPPORTS_SMP
1392 select NR_CPUS_DEFAULT_16
1393 select WEAK_ORDERING
1394 select CPU_SUPPORTS_HIGHMEM
1395 select CPU_SUPPORTS_HUGEPAGES
1398 select USB_EHCI_BIG_ENDIAN_MMIO
1399 select SYS_HAS_DMA_OPS
1400 select MIPS_L1_CACHE_SHIFT_7
1402 The Cavium Octeon processor is a highly integrated chip containing
1403 many ethernet hardware widgets for networking tasks. The processor
1404 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1405 Full details can be found at http://www.caviumnetworks.com.
1408 bool "Broadcom BMIPS"
1409 depends on SYS_HAS_CPU_BMIPS
1411 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1412 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1413 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1414 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select DMA_NONCOHERENT
1418 select SWAP_IO_SPACE
1419 select WEAK_ORDERING
1420 select CPU_SUPPORTS_HIGHMEM
1421 select CPU_HAS_PREFETCH
1423 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1426 bool "Netlogic XLR SoC"
1427 depends on SYS_HAS_CPU_XLR
1428 select CPU_SUPPORTS_32BIT_KERNEL
1429 select CPU_SUPPORTS_64BIT_KERNEL
1430 select CPU_SUPPORTS_HIGHMEM
1431 select CPU_SUPPORTS_HUGEPAGES
1432 select WEAK_ORDERING
1433 select WEAK_REORDERING_BEYOND_LLSC
1435 Netlogic Microsystems XLR/XLS processors.
1438 bool "Netlogic XLP SoC"
1439 depends on SYS_HAS_CPU_XLP
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_64BIT_KERNEL
1442 select CPU_SUPPORTS_HIGHMEM
1443 select WEAK_ORDERING
1444 select WEAK_REORDERING_BEYOND_LLSC
1445 select CPU_HAS_PREFETCH
1448 Netlogic Microsystems XLP processors.
1452 config CPU_NOP_WORKAROUNDS
1455 config CPU_JUMP_WORKAROUNDS
1458 config CPU_LOONGSON2F_WORKAROUNDS
1459 bool "Loongson 2F Workarounds"
1461 select CPU_NOP_WORKAROUNDS
1462 select CPU_JUMP_WORKAROUNDS
1464 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1465 require workarounds. Without workarounds the system may hang
1466 unexpectedly. For more information please refer to the gas
1467 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1469 Loongson 2F03 and later have fixed these issues and no workarounds
1470 are needed. The workarounds have no significant side effect on them
1471 but may decrease the performance of the system so this option should
1472 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1475 If unsure, please say Y.
1476 endif # CPU_LOONGSON2F
1478 config SYS_SUPPORTS_ZBOOT
1480 select HAVE_KERNEL_GZIP
1481 select HAVE_KERNEL_BZIP2
1482 select HAVE_KERNEL_LZ4
1483 select HAVE_KERNEL_LZMA
1484 select HAVE_KERNEL_LZO
1485 select HAVE_KERNEL_XZ
1487 config SYS_SUPPORTS_ZBOOT_UART16550
1489 select SYS_SUPPORTS_ZBOOT
1491 config CPU_LOONGSON2
1493 select CPU_SUPPORTS_32BIT_KERNEL
1494 select CPU_SUPPORTS_64BIT_KERNEL
1495 select CPU_SUPPORTS_HIGHMEM
1496 select CPU_SUPPORTS_HUGEPAGES
1498 config CPU_LOONGSON1
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1506 config CPU_BMIPS32_3300
1507 select SMP_UP if SMP
1510 config CPU_BMIPS4350
1512 select SYS_SUPPORTS_SMP
1513 select SYS_SUPPORTS_HOTPLUG_CPU
1515 config CPU_BMIPS4380
1517 select SYS_SUPPORTS_SMP
1518 select SYS_SUPPORTS_HOTPLUG_CPU
1520 config CPU_BMIPS5000
1522 select MIPS_CPU_SCACHE
1523 select SYS_SUPPORTS_SMP
1524 select SYS_SUPPORTS_HOTPLUG_CPU
1526 config SYS_HAS_CPU_LOONGSON2E
1529 config SYS_HAS_CPU_LOONGSON2F
1531 select CPU_SUPPORTS_CPUFREQ
1532 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1533 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1535 config SYS_HAS_CPU_LOONGSON1B
1538 config SYS_HAS_CPU_MIPS32_R1
1541 config SYS_HAS_CPU_MIPS32_R2
1544 config SYS_HAS_CPU_MIPS64_R1
1547 config SYS_HAS_CPU_MIPS64_R2
1550 config SYS_HAS_CPU_R3000
1553 config SYS_HAS_CPU_TX39XX
1556 config SYS_HAS_CPU_VR41XX
1559 config SYS_HAS_CPU_R4300
1562 config SYS_HAS_CPU_R4X00
1565 config SYS_HAS_CPU_TX49XX
1568 config SYS_HAS_CPU_R5000
1571 config SYS_HAS_CPU_R5432
1574 config SYS_HAS_CPU_R5500
1577 config SYS_HAS_CPU_R6000
1580 config SYS_HAS_CPU_NEVADA
1583 config SYS_HAS_CPU_R8000
1586 config SYS_HAS_CPU_R10000
1589 config SYS_HAS_CPU_RM7000
1592 config SYS_HAS_CPU_SB1
1595 config SYS_HAS_CPU_CAVIUM_OCTEON
1598 config SYS_HAS_CPU_BMIPS
1601 config SYS_HAS_CPU_BMIPS32_3300
1603 select SYS_HAS_CPU_BMIPS
1605 config SYS_HAS_CPU_BMIPS4350
1607 select SYS_HAS_CPU_BMIPS
1609 config SYS_HAS_CPU_BMIPS4380
1611 select SYS_HAS_CPU_BMIPS
1613 config SYS_HAS_CPU_BMIPS5000
1615 select SYS_HAS_CPU_BMIPS
1617 config SYS_HAS_CPU_XLR
1620 config SYS_HAS_CPU_XLP
1624 # CPU may reorder R->R, R->W, W->R, W->W
1625 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1627 config WEAK_ORDERING
1631 # CPU may reorder reads and writes beyond LL/SC
1632 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1634 config WEAK_REORDERING_BEYOND_LLSC
1639 # These two indicate any level of the MIPS32 and MIPS64 architecture
1643 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1647 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1650 # These two indicate the revision of the architecture, either Release 1 or Release 2
1654 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1658 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1660 config SYS_SUPPORTS_32BIT_KERNEL
1662 config SYS_SUPPORTS_64BIT_KERNEL
1664 config CPU_SUPPORTS_32BIT_KERNEL
1666 config CPU_SUPPORTS_64BIT_KERNEL
1668 config CPU_SUPPORTS_CPUFREQ
1670 config CPU_SUPPORTS_ADDRWINCFG
1672 config CPU_SUPPORTS_HUGEPAGES
1674 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1676 config MIPS_PGD_C0_CONTEXT
1678 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1681 # Set to y for ptrace access to watch registers.
1683 config HARDWARE_WATCHPOINTS
1685 default y if CPU_MIPSR1 || CPU_MIPSR2
1690 prompt "Kernel code model"
1692 You should only select this option if you have a workload that
1693 actually benefits from 64-bit processing or if your machine has
1694 large memory. You will only be presented a single option in this
1695 menu if your system does not support both 32-bit and 64-bit kernels.
1698 bool "32-bit kernel"
1699 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1702 Select this option if you want to build a 32-bit kernel.
1704 bool "64-bit kernel"
1705 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1707 Select this option if you want to build a 64-bit kernel.
1712 bool "KVM Guest Kernel"
1713 depends on BROKEN_ON_SMP
1715 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1717 config KVM_HOST_FREQ
1718 int "KVM Host Processor Frequency (MHz)"
1719 depends on KVM_GUEST
1722 Select this option if building a guest kernel for KVM to skip
1723 RTC emulation when determining guest CPU Frequency. Instead, the guest
1724 processor frequency is automatically derived from the host frequency.
1727 prompt "Kernel page size"
1728 default PAGE_SIZE_4KB
1730 config PAGE_SIZE_4KB
1732 depends on !CPU_LOONGSON2
1734 This option select the standard 4kB Linux page size. On some
1735 R3000-family processors this is the only available page size. Using
1736 4kB page size will minimize memory consumption and is therefore
1737 recommended for low memory systems.
1739 config PAGE_SIZE_8KB
1741 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1743 Using 8kB page size will result in higher performance kernel at
1744 the price of higher memory consumption. This option is available
1745 only on R8000 and cnMIPS processors. Note that you will need a
1746 suitable Linux distribution to support this.
1748 config PAGE_SIZE_16KB
1750 depends on !CPU_R3000 && !CPU_TX39XX
1752 Using 16kB page size will result in higher performance kernel at
1753 the price of higher memory consumption. This option is available on
1754 all non-R3000 family processors. Note that you will need a suitable
1755 Linux distribution to support this.
1757 config PAGE_SIZE_32KB
1759 depends on CPU_CAVIUM_OCTEON
1761 Using 32kB page size will result in higher performance kernel at
1762 the price of higher memory consumption. This option is available
1763 only on cnMIPS cores. Note that you will need a suitable Linux
1764 distribution to support this.
1766 config PAGE_SIZE_64KB
1768 depends on !CPU_R3000 && !CPU_TX39XX
1770 Using 64kB page size will result in higher performance kernel at
1771 the price of higher memory consumption. This option is available on
1772 all non-R3000 family processor. Not that at the time of this
1773 writing this option is still high experimental.
1777 config FORCE_MAX_ZONEORDER
1778 int "Maximum zone order"
1779 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1780 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1781 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1782 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1783 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1784 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1788 The kernel memory allocator divides physically contiguous memory
1789 blocks into "zones", where each zone is a power of two number of
1790 pages. This option selects the largest power of two that the kernel
1791 keeps in the memory allocator. If you need to allocate very large
1792 blocks of physically contiguous memory, then you may need to
1793 increase this value.
1795 This config option is actually maximum order plus one. For example,
1796 a value of 11 means that the largest free memory block is 2^10 pages.
1798 The page size is not necessarily 4KB. Keep this in mind
1799 when choosing a value for this option.
1802 bool "Use GIC global counter for clock events"
1803 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1805 Use the GIC global counter for the clock events. The R4K clock
1806 event driver is always present, so if the platform ends up not
1807 detecting a GIC, it will fall back to the R4K timer for the
1808 generation of clock events.
1813 config IP22_CPU_SCACHE
1818 # Support for a MIPS32 / MIPS64 style S-caches
1820 config MIPS_CPU_SCACHE
1823 select MIPS_L1_CACHE_SHIFT_6
1825 config R5000_CPU_SCACHE
1829 config RM7000_CPU_SCACHE
1833 config SIBYTE_DMA_PAGEOPS
1834 bool "Use DMA to clear/copy pages"
1837 Instead of using the CPU to zero and copy pages, use a Data Mover
1838 channel. These DMA channels are otherwise unused by the standard
1839 SiByte Linux port. Seems to give a small performance benefit.
1841 config CPU_HAS_PREFETCH
1844 config CPU_GENERIC_DUMP_TLB
1846 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1850 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1852 config CPU_R4K_CACHE_TLB
1854 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1857 prompt "MIPS MT options"
1859 config MIPS_MT_DISABLED
1860 bool "Disable multithreading support"
1862 Use this option if your platform does not support the MT ASE
1863 which is hardware multithreading support. On systems without
1864 an MT-enabled processor, this will be the only option that is
1865 available in this menu.
1868 bool "Use 1 TC on each available VPE for SMP"
1869 depends on SYS_SUPPORTS_MULTITHREADING
1870 select CPU_MIPSR2_IRQ_VI
1871 select CPU_MIPSR2_IRQ_EI
1876 select SYS_SUPPORTS_SMP
1877 select SYS_SUPPORTS_SCHED_SMT
1878 select MIPS_PERF_SHARED_TC_COUNTERS
1880 This is a kernel model which is known as SMVP. This is supported
1881 on cores with the MT ASE and uses the available VPEs to implement
1882 virtual processors which supports SMP. This is equivalent to the
1883 Intel Hyperthreading feature. For further information go to
1884 <http://www.imgtec.com/mips/mips-multithreading.asp>.
1887 bool "Use all TCs on all VPEs for SMP (DEPRECATED)"
1888 depends on CPU_MIPS32_R2
1889 depends on SYS_SUPPORTS_MULTITHREADING
1890 select CPU_MIPSR2_IRQ_VI
1891 select CPU_MIPSR2_IRQ_EI
1895 select SYS_SUPPORTS_SMP
1896 select NR_CPUS_DEFAULT_8
1898 This is a kernel model which is known as SMTC. This is
1899 supported on cores with the MT ASE and presents all TCs
1900 available on all VPEs to support SMP. For further
1901 information see <http://www.linux-mips.org/wiki/34K#SMTC>.
1909 bool "SMT (multithreading) scheduler support"
1910 depends on SYS_SUPPORTS_SCHED_SMT
1913 SMT scheduler support improves the CPU scheduler's decision making
1914 when dealing with MIPS MT enabled cores at a cost of slightly
1915 increased overhead in some places. If unsure say N here.
1917 config SYS_SUPPORTS_SCHED_SMT
1920 config SYS_SUPPORTS_MULTITHREADING
1923 config MIPS_MT_FPAFF
1924 bool "Dynamic FPU affinity for FP-intensive threads"
1926 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1928 config MIPS_VPE_LOADER
1929 bool "VPE loader support."
1930 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1931 select CPU_MIPSR2_IRQ_VI
1932 select CPU_MIPSR2_IRQ_EI
1935 Includes a loader for loading an elf relocatable object
1936 onto another VPE and running it.
1938 config MIPS_VPE_LOADER_CMP
1941 depends on MIPS_VPE_LOADER && MIPS_CMP
1943 config MIPS_VPE_LOADER_MT
1946 depends on MIPS_VPE_LOADER && !MIPS_CMP
1948 config MIPS_MT_SMTC_IM_BACKSTOP
1949 bool "Use per-TC register bits as backstop for inhibited IM bits"
1950 depends on MIPS_MT_SMTC
1953 To support multiple TC microthreads acting as "CPUs" within
1954 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1955 during interrupt handling. To support legacy drivers and interrupt
1956 controller management code, SMTC has a "backstop" to track and
1957 if necessary restore the interrupt mask. This has some performance
1958 impact on interrupt service overhead.
1960 config MIPS_MT_SMTC_IRQAFF
1961 bool "Support IRQ affinity API"
1962 depends on MIPS_MT_SMTC
1965 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1966 for SMTC Linux kernel. Requires platform support, of which
1967 an example can be found in the MIPS kernel i8259 and Malta
1968 platform code. Adds some overhead to interrupt dispatch, and
1969 should be used only if you know what you are doing.
1971 config MIPS_VPE_LOADER_TOM
1972 bool "Load VPE program into memory hidden from linux"
1973 depends on MIPS_VPE_LOADER
1976 The loader can use memory that is present but has been hidden from
1977 Linux using the kernel command line option "mem=xxMB". It's up to
1978 you to ensure the amount you put in the option and the space your
1979 program requires is less or equal to the amount physically present.
1981 config MIPS_VPE_APSP_API
1982 bool "Enable support for AP/SP API (RTLX)"
1983 depends on MIPS_VPE_LOADER
1986 config MIPS_VPE_APSP_API_CMP
1989 depends on MIPS_VPE_APSP_API && MIPS_CMP
1991 config MIPS_VPE_APSP_API_MT
1994 depends on MIPS_VPE_APSP_API && !MIPS_CMP
1997 bool "MIPS CMP support"
1998 depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP
2001 select WEAK_ORDERING
2004 Enable Coherency Manager processor (CMP) support.
2015 config SB1_PASS_1_WORKAROUNDS
2017 depends on CPU_SB1_PASS_1
2020 config SB1_PASS_2_WORKAROUNDS
2022 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2025 config SB1_PASS_2_1_WORKAROUNDS
2027 depends on CPU_SB1 && CPU_SB1_PASS_2
2031 config 64BIT_PHYS_ADDR
2034 config ARCH_PHYS_ADDR_T_64BIT
2035 def_bool 64BIT_PHYS_ADDR
2037 config CPU_HAS_SMARTMIPS
2038 depends on SYS_SUPPORTS_SMARTMIPS
2039 bool "Support for the SmartMIPS ASE"
2041 SmartMIPS is a extension of the MIPS32 architecture aimed at
2042 increased security at both hardware and software level for
2043 smartcards. Enabling this option will allow proper use of the
2044 SmartMIPS instructions by Linux applications. However a kernel with
2045 this option will not work on a MIPS core without SmartMIPS core. If
2046 you don't know you probably don't have SmartMIPS and should say N
2049 config CPU_MICROMIPS
2050 depends on SYS_SUPPORTS_MICROMIPS
2051 bool "Build kernel using microMIPS ISA"
2053 When this option is enabled the kernel will be built using the
2063 # Vectored interrupt mode is an R2 feature
2065 config CPU_MIPSR2_IRQ_VI
2069 # Extended interrupt mode is an R2 feature
2071 config CPU_MIPSR2_IRQ_EI
2076 depends on !CPU_R3000
2082 config CPU_DADDI_WORKAROUNDS
2085 config CPU_R4000_WORKAROUNDS
2087 select CPU_R4400_WORKAROUNDS
2089 config CPU_R4400_WORKAROUNDS
2093 # - Highmem only makes sense for the 32-bit kernel.
2094 # - The current highmem code will only work properly on physically indexed
2095 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2096 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2097 # moment we protect the user and offer the highmem option only on machines
2098 # where it's known to be safe. This will not offer highmem on a few systems
2099 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2100 # indexed CPUs but we're playing safe.
2101 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2102 # know they might have memory configurations that could make use of highmem
2106 bool "High Memory Support"
2107 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2109 config CPU_SUPPORTS_HIGHMEM
2112 config SYS_SUPPORTS_HIGHMEM
2115 config SYS_SUPPORTS_SMARTMIPS
2118 config SYS_SUPPORTS_MICROMIPS
2121 config ARCH_FLATMEM_ENABLE
2123 depends on !NUMA && !CPU_LOONGSON2
2125 config ARCH_DISCONTIGMEM_ENABLE
2127 default y if SGI_IP27
2129 Say Y to support efficient handling of discontiguous physical memory,
2130 for architectures which are either NUMA (Non-Uniform Memory Access)
2131 or have huge holes in the physical address space for other reasons.
2132 See <file:Documentation/vm/numa> for more.
2134 config ARCH_SPARSEMEM_ENABLE
2136 select SPARSEMEM_STATIC
2140 depends on SYS_SUPPORTS_NUMA
2142 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2143 Access). This option improves performance on systems with more
2144 than two nodes; on two node systems it is generally better to
2145 leave it disabled; on single node systems disable this option
2148 config SYS_SUPPORTS_NUMA
2154 depends on NEED_MULTIPLE_NODES
2156 config HW_PERF_EVENTS
2157 bool "Enable hardware performance counter support for perf events"
2158 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2161 Enable hardware performance counter support for perf events. If
2162 disabled, perf events will use software events only.
2167 bool "Multi-Processing support"
2168 depends on SYS_SUPPORTS_SMP
2170 This enables support for systems with more than one CPU. If you have
2171 a system with only one CPU, say N. If you have a system with more
2172 than one CPU, say Y.
2174 If you say N here, the kernel will run on uni- and multiprocessor
2175 machines, but will use only one CPU of a multiprocessor machine. If
2176 you say Y here, the kernel will run on many, but not all,
2177 uniprocessor machines. On a uniprocessor machine, the kernel
2178 will run faster if you say N here.
2180 People using multiprocessor machines who say Y here should also say
2181 Y to "Enhanced Real Time Clock Support", below.
2183 See also the SMP-HOWTO available at
2184 <http://www.tldp.org/docs.html#howto>.
2186 If you don't know what to do here, say N.
2191 config SYS_SUPPORTS_MIPS_CMP
2194 config SYS_SUPPORTS_SMP
2197 config NR_CPUS_DEFAULT_4
2200 config NR_CPUS_DEFAULT_8
2203 config NR_CPUS_DEFAULT_16
2206 config NR_CPUS_DEFAULT_32
2209 config NR_CPUS_DEFAULT_64
2213 int "Maximum number of CPUs (2-64)"
2216 default "4" if NR_CPUS_DEFAULT_4
2217 default "8" if NR_CPUS_DEFAULT_8
2218 default "16" if NR_CPUS_DEFAULT_16
2219 default "32" if NR_CPUS_DEFAULT_32
2220 default "64" if NR_CPUS_DEFAULT_64
2222 This allows you to specify the maximum number of CPUs which this
2223 kernel will support. The maximum supported value is 32 for 32-bit
2224 kernel and 64 for 64-bit kernels; the minimum value which makes
2225 sense is 1 for Qemu (useful only for kernel debugging purposes)
2226 and 2 for all others.
2228 This is purely to save memory - each supported CPU adds
2229 approximately eight kilobytes to the kernel image. For best
2230 performance should round up your number of processors to the next
2233 config MIPS_PERF_SHARED_TC_COUNTERS
2237 # Timer Interrupt Frequency Configuration
2241 prompt "Timer frequency"
2244 Allows the configuration of the timer frequency.
2247 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2250 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2253 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2256 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2259 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2262 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2265 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2269 config SYS_SUPPORTS_48HZ
2272 config SYS_SUPPORTS_100HZ
2275 config SYS_SUPPORTS_128HZ
2278 config SYS_SUPPORTS_250HZ
2281 config SYS_SUPPORTS_256HZ
2284 config SYS_SUPPORTS_1000HZ
2287 config SYS_SUPPORTS_1024HZ
2290 config SYS_SUPPORTS_ARBIT_HZ
2292 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2293 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2294 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2295 !SYS_SUPPORTS_1024HZ
2300 default 100 if HZ_100
2301 default 128 if HZ_128
2302 default 250 if HZ_250
2303 default 256 if HZ_256
2304 default 1000 if HZ_1000
2305 default 1024 if HZ_1024
2307 source "kernel/Kconfig.preempt"
2310 bool "Kexec system call"
2312 kexec is a system call that implements the ability to shutdown your
2313 current kernel, and to start another kernel. It is like a reboot
2314 but it is independent of the system firmware. And like a reboot
2315 you can start any kernel with it, not just Linux.
2317 The name comes from the similarity to the exec system call.
2319 It is an ongoing process to be certain the hardware in a machine
2320 is properly shutdown, so do not be surprised if this code does not
2321 initially work for you. As of this writing the exact hardware
2322 interface is strongly in flux, so no good recommendation can be
2326 bool "Kernel crash dumps"
2328 Generate crash dump after being started by kexec.
2329 This should be normally only set in special crash dump kernels
2330 which are loaded in the main kernel with kexec-tools into
2331 a specially reserved region and then later executed after
2332 a crash by kdump/kexec. The crash dump kernel must be compiled
2333 to a memory address not used by the main kernel or firmware using
2336 config PHYSICAL_START
2337 hex "Physical address where the kernel is loaded"
2338 default "0xffffffff84000000" if 64BIT
2339 default "0x84000000" if 32BIT
2340 depends on CRASH_DUMP
2342 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2343 If you plan to use kernel for capturing the crash dump change
2344 this value to start of the reserved region (the "X" value as
2345 specified in the "crashkernel=YM@XM" command line boot parameter
2346 passed to the panic-ed kernel).
2349 bool "Enable seccomp to safely compute untrusted bytecode"
2353 This kernel feature is useful for number crunching applications
2354 that may need to compute untrusted bytecode during their
2355 execution. By using pipes or other transports made available to
2356 the process as file descriptors supporting the read/write
2357 syscalls, it's possible to isolate those applications in
2358 their own address space using seccomp. Once seccomp is
2359 enabled via /proc/<pid>/seccomp, it cannot be disabled
2360 and the task is only allowed to execute a few safe syscalls
2361 defined by each seccomp mode.
2363 If unsure, say Y. Only embedded should say N here.
2365 config MIPS_O32_FP64_SUPPORT
2366 bool "Support for O32 binaries using 64-bit FP"
2367 depends on 32BIT || MIPS32_O32
2370 When this is enabled, the kernel will support use of 64-bit floating
2371 point registers with binaries using the O32 ABI along with the
2372 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2373 32-bit MIPS systems this support is at the cost of increasing the
2374 size and complexity of the compiled FPU emulator. Thus if you are
2375 running a MIPS32 system and know that none of your userland binaries
2376 will require 64-bit floating point, you may wish to reduce the size
2377 of your kernel & potentially improve FP emulation performance by
2385 select OF_EARLY_FLATTREE
2390 config LOCKDEP_SUPPORT
2394 config STACKTRACE_SUPPORT
2398 source "init/Kconfig"
2400 source "kernel/Kconfig.freezer"
2402 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2410 bool "Support for PCI controller"
2411 depends on HW_HAS_PCI
2413 select NO_GENERIC_PCI_IOPORT_MAP
2415 Find out whether you have a PCI motherboard. PCI is the name of a
2416 bus system, i.e. the way the CPU talks to the other stuff inside
2417 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2423 source "drivers/pci/Kconfig"
2425 source "drivers/pci/pcie/Kconfig"
2428 # ISA support is now enabled via select. Too many systems still have the one
2429 # or other ISA chip on the board that users don't know about so don't expect
2430 # users to choose the right thing ...
2437 depends on HW_HAS_EISA
2439 select GENERIC_ISA_DMA
2441 The Extended Industry Standard Architecture (EISA) bus was
2442 developed as an open alternative to the IBM MicroChannel bus.
2444 The EISA bus provided some of the features of the IBM MicroChannel
2445 bus while maintaining backward compatibility with cards made for
2446 the older ISA bus. The EISA bus saw limited use between 1988 and
2447 1995 when it was made obsolete by the PCI bus.
2449 Say Y here if you are building a kernel for an EISA-based machine.
2453 source "drivers/eisa/Kconfig"
2456 bool "TURBOchannel support"
2457 depends on MACH_DECSTATION
2459 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2460 processors. TURBOchannel programming specifications are available
2462 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2464 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2465 Linux driver support status is documented at:
2466 <http://www.linux-mips.org/wiki/DECstation>
2476 select MIPS_EXTERNAL_TIMER
2484 source "drivers/pcmcia/Kconfig"
2486 source "drivers/pci/hotplug/Kconfig"
2489 tristate "RapidIO support"
2493 If you say Y here, the kernel will include drivers and
2494 infrastructure code to support RapidIO interconnect devices.
2496 source "drivers/rapidio/Kconfig"
2500 menu "Executable file formats"
2502 source "fs/Kconfig.binfmt"
2507 config MIPS32_COMPAT
2508 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2511 Select this option if you want Linux/MIPS 32-bit binary
2512 compatibility. Since all software available for Linux/MIPS is
2513 currently 32-bit you should say Y here.
2517 depends on MIPS32_COMPAT
2518 select ARCH_WANT_OLD_COMPAT_IPC
2521 config SYSVIPC_COMPAT
2523 depends on COMPAT && SYSVIPC
2527 bool "Kernel support for o32 binaries"
2528 depends on MIPS32_COMPAT
2530 Select this option if you want to run o32 binaries. These are pure
2531 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2532 existing binaries are in this format.
2537 bool "Kernel support for n32 binaries"
2538 depends on MIPS32_COMPAT
2540 Select this option if you want to run n32 binaries. These are
2541 64-bit binaries using 32-bit quantities for addressing and certain
2542 data that would normally be 64-bit. They are used in special
2549 default y if MIPS32_O32 || MIPS32_N32
2553 menu "Power management options"
2555 config ARCH_HIBERNATION_POSSIBLE
2557 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2559 config ARCH_SUSPEND_POSSIBLE
2561 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2563 source "kernel/power/Kconfig"
2567 config MIPS_EXTERNAL_TIMER
2570 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2571 menu "CPU Power Management"
2572 source "drivers/cpufreq/Kconfig"
2576 source "net/Kconfig"
2578 source "drivers/Kconfig"
2580 source "drivers/firmware/Kconfig"
2584 source "arch/mips/Kconfig.debug"
2586 source "security/Kconfig"
2588 source "crypto/Kconfig"
2590 source "lib/Kconfig"
2592 source "arch/mips/kvm/Kconfig"