4 select HAVE_CONTEXT_TRACKING
5 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select ARCH_HAVE_CUSTOM_GPIO_H
12 select HAVE_FUNCTION_TRACER
13 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
14 select HAVE_DYNAMIC_FTRACE
15 select HAVE_FTRACE_MCOUNT_RECORD
16 select HAVE_C_RECORDMCOUNT
17 select HAVE_FUNCTION_GRAPH_TRACER
19 select HAVE_KRETPROBES
20 select HAVE_DEBUG_KMEMLEAK
21 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
22 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
23 select RTC_LIB if !MACH_LOONGSON
24 select GENERIC_ATOMIC64 if !64BIT
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
27 select HAVE_DMA_API_DEBUG
28 select HAVE_GENERIC_HARDIRQS
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_PCI_IOMAP
32 select HAVE_ARCH_JUMP_LABEL
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select IRQ_FORCED_THREADING
36 select HAVE_MEMBLOCK_NODE_MAP
37 select ARCH_DISCARD_MEMBLOCK
38 select GENERIC_SMP_IDLE_THREAD
39 select BUILDTIME_EXTABLE_SORT
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE
42 select HAVE_MOD_ARCH_SPECIFIC
44 select MODULES_USE_ELF_REL if MODULES
45 select MODULES_USE_ELF_RELA if MODULES && 64BIT
46 select CLONE_BACKWARDS
47 select HAVE_DEBUG_STACKOVERFLOW
49 menu "Machine selection"
56 bool "Alchemy processor based machines"
57 select 64BIT_PHYS_ADDR
61 select SYS_HAS_CPU_MIPS32_R1
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_APM_EMULATION
64 select ARCH_REQUIRE_GPIOLIB
65 select SYS_SUPPORTS_ZBOOT
66 select USB_ARCH_HAS_OHCI
67 select USB_ARCH_HAS_EHCI
70 bool "Texas Instruments AR7"
72 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select SYS_SUPPORTS_ZBOOT_UART16550
83 select ARCH_REQUIRE_GPIOLIB
87 Support for the Texas Instruments AR7 System-on-a-Chip
88 family: TNETD7100, 7200 and 7300.
91 bool "Atheros AR71XX/AR724X/AR913X based boards"
92 select ARCH_REQUIRE_GPIOLIB
96 select DMA_NONCOHERENT
100 select SYS_HAS_CPU_MIPS32_R2
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_BIG_ENDIAN
105 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
108 bool "Broadcom BCM47XX based boards"
109 select ARCH_WANT_OPTIONAL_GPIOLIB
113 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_MIPS32_R1
118 select NO_EXCEPT_FILL
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121 select SYS_HAS_EARLY_PRINTK
123 Support for BCM47XX based boards
126 bool "Broadcom BCM63XX based boards"
130 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_MIPS32_R1
133 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
134 select NR_CPUS_DEFAULT_2
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_BIG_ENDIAN
137 select SYS_HAS_EARLY_PRINTK
139 select ARCH_REQUIRE_GPIOLIB
142 Support for BCM63XX based boards
149 select DMA_NONCOHERENT
155 select PCI_GT64XXX_PCI0
157 select SYS_HAS_CPU_NEVADA
158 select SYS_HAS_EARLY_PRINTK
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_64BIT_KERNEL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
163 config MACH_DECSTATION
170 select CPU_DADDI_WORKAROUNDS if 64BIT
171 select CPU_R4000_WORKAROUNDS if 64BIT
172 select CPU_R4400_WORKAROUNDS if 64BIT
173 select DMA_NONCOHERENT
176 select SYS_HAS_CPU_R3000
177 select SYS_HAS_CPU_R4X00
178 select SYS_SUPPORTS_32BIT_KERNEL
179 select SYS_SUPPORTS_64BIT_KERNEL
180 select SYS_SUPPORTS_LITTLE_ENDIAN
181 select SYS_SUPPORTS_128HZ
182 select SYS_SUPPORTS_256HZ
183 select SYS_SUPPORTS_1024HZ
185 This enables support for DEC's MIPS based workstations. For details
186 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
187 DECstation porting pages on <http://decstation.unix-ag.org/>.
189 If you have one of the following DECstation Models you definitely
190 want to choose R4xx0 for the CPU Type:
197 otherwise choose R3000.
200 bool "Jazz family of machines"
203 select ARCH_MAY_HAVE_PC_FDC
206 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
207 select GENERIC_ISA_DMA
208 select HAVE_PCSPKR_PLATFORM
213 select SYS_HAS_CPU_R4X00
214 select SYS_SUPPORTS_32BIT_KERNEL
215 select SYS_SUPPORTS_64BIT_KERNEL
216 select SYS_SUPPORTS_100HZ
218 This a family of machines based on the MIPS R4030 chipset which was
219 used by several vendors to build RISC/os and Windows NT workstations.
220 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
221 Olivetti M700-10 workstations.
224 bool "Ingenic JZ4740 based machines"
225 select SYS_HAS_CPU_MIPS32_R1
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_LITTLE_ENDIAN
228 select SYS_SUPPORTS_ZBOOT_UART16550
229 select DMA_NONCOHERENT
231 select ARCH_REQUIRE_GPIOLIB
232 select SYS_HAS_EARLY_PRINTK
235 select GENERIC_IRQ_CHIP
238 bool "Lantiq based platforms"
239 select DMA_NONCOHERENT
243 select SYS_HAS_CPU_MIPS32_R1
244 select SYS_HAS_CPU_MIPS32_R2
245 select SYS_SUPPORTS_BIG_ENDIAN
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_MULTITHREADING
248 select SYS_HAS_EARLY_PRINTK
249 select ARCH_REQUIRE_GPIOLIB
252 select HAVE_MACH_CLKDEV
256 select PINCTRL_LANTIQ
259 bool "LASAT Networks platforms"
262 select DMA_NONCOHERENT
263 select SYS_HAS_EARLY_PRINTK
266 select PCI_GT64XXX_PCI0
268 select R5000_CPU_SCACHE
269 select SYS_HAS_CPU_R5000
270 select SYS_SUPPORTS_32BIT_KERNEL
271 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
272 select SYS_SUPPORTS_LITTLE_ENDIAN
275 bool "Loongson family of machines"
276 select SYS_SUPPORTS_ZBOOT
278 This enables the support of Loongson family of machines.
280 Loongson is a family of general-purpose MIPS-compatible CPUs.
281 developed at Institute of Computing Technology (ICT),
282 Chinese Academy of Sciences (CAS) in the People's Republic
283 of China. The chief architect is Professor Weiwu Hu.
285 config MACH_LOONGSON1
286 bool "Loongson 1 family of machines"
287 select SYS_SUPPORTS_ZBOOT
289 This enables support for the Loongson 1 based machines.
291 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
292 the ICT (Institute of Computing Technology) and the Chinese Academy
296 bool "MIPS Malta board"
297 select ARCH_MAY_HAVE_PC_FDC
303 select DMA_NONCOHERENT
304 select GENERIC_ISA_DMA
305 select HAVE_PCSPKR_PLATFORM
312 select MIPS_CPU_SCACHE
313 select PCI_GT64XXX_PCI0
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_HAS_CPU_MIPS64_R1
319 select SYS_HAS_CPU_MIPS64_R2
320 select SYS_HAS_CPU_NEVADA
321 select SYS_HAS_CPU_RM7000
322 select SYS_HAS_EARLY_PRINTK
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_64BIT_KERNEL
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_LITTLE_ENDIAN
327 select SYS_SUPPORTS_MIPS_CMP
328 select SYS_SUPPORTS_MULTITHREADING
329 select SYS_SUPPORTS_SMARTMIPS
330 select SYS_SUPPORTS_ZBOOT
332 This enables support for the MIPS Technologies Malta evaluation
336 bool "MIPS SEAD3 board"
342 select CPU_MIPSR2_IRQ_VI
343 select CPU_MIPSR2_IRQ_EI
344 select DMA_NONCOHERENT
348 select SYS_HAS_CPU_MIPS32_R1
349 select SYS_HAS_CPU_MIPS32_R2
350 select SYS_HAS_CPU_MIPS64_R1
351 select SYS_HAS_EARLY_PRINTK
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL
354 select SYS_SUPPORTS_BIG_ENDIAN
355 select SYS_SUPPORTS_LITTLE_ENDIAN
356 select SYS_SUPPORTS_SMARTMIPS
357 select SYS_SUPPORTS_MICROMIPS
358 select USB_ARCH_HAS_EHCI
359 select USB_EHCI_BIG_ENDIAN_DESC
360 select USB_EHCI_BIG_ENDIAN_MMIO
363 This enables support for the MIPS Technologies SEAD3 evaluation
367 bool "NEC EMMA2RH Mark-eins board"
371 This enables support for the NEC Electronics Mark-eins boards.
374 bool "NEC VR4100 series based machines"
377 select SYS_HAS_CPU_VR41XX
378 select ARCH_REQUIRE_GPIOLIB
381 bool "NXP STB220 board"
384 Support for NXP Semiconductors STB220 Development Board.
391 Support for NXP Semiconductors STB225 Development Board.
394 bool "PMC-Sierra MSP chipsets"
397 select DMA_NONCOHERENT
399 select NO_EXCEPT_FILL
401 select SYS_HAS_CPU_MIPS32_R1
402 select SYS_HAS_CPU_MIPS32_R2
403 select SYS_SUPPORTS_32BIT_KERNEL
404 select SYS_SUPPORTS_BIG_ENDIAN
407 select SERIAL_8250_CONSOLE
408 select USB_EHCI_BIG_ENDIAN_MMIO
409 select USB_EHCI_BIG_ENDIAN_DESC
411 This adds support for the PMC-Sierra family of Multi-Service
412 Processor System-On-A-Chips. These parts include a number
413 of integrated peripherals, interfaces and DSPs in addition to
414 a variety of MIPS cores.
420 select CPU_MIPSR2_IRQ_VI
421 select CPU_MIPSR2_IRQ_EI
423 select DMA_NONCOHERENT
425 select SYS_HAS_CPU_MIPS32_R2
426 select SYS_SUPPORTS_32BIT_KERNEL
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_HIGHMEM
429 select USB_OHCI_LITTLE_ENDIAN
431 This enables support for the Cisco PowerTV Platform.
434 bool "Ralink based machines"
438 select DMA_NONCOHERENT
441 select SYS_HAS_CPU_MIPS32_R1
442 select SYS_HAS_CPU_MIPS32_R2
443 select SYS_SUPPORTS_32BIT_KERNEL
444 select SYS_SUPPORTS_LITTLE_ENDIAN
445 select SYS_HAS_EARLY_PRINTK
446 select HAVE_MACH_CLKDEV
450 bool "SGI IP22 (Indy/Indigo2)"
456 select DEFAULT_SGI_PARTITION
457 select DMA_NONCOHERENT
461 select IP22_CPU_SCACHE
463 select GENERIC_ISA_DMA_SUPPORT_BROKEN
465 select SGI_HAS_INDYDOG
471 select SYS_HAS_CPU_R4X00
472 select SYS_HAS_CPU_R5000
474 # Disable EARLY_PRINTK for now since it leads to overwritten prom
475 # memory during early boot on some machines.
477 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
478 # for a more details discussion
480 # select SYS_HAS_EARLY_PRINTK
481 select SYS_SUPPORTS_32BIT_KERNEL
482 select SYS_SUPPORTS_64BIT_KERNEL
483 select SYS_SUPPORTS_BIG_ENDIAN
485 This are the SGI Indy, Challenge S and Indigo2, as well as certain
486 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
487 that runs on these, say Y here.
490 bool "SGI IP27 (Origin200/2000)"
494 select DEFAULT_SGI_PARTITION
496 select SYS_HAS_EARLY_PRINTK
498 select NR_CPUS_DEFAULT_64
499 select SYS_HAS_CPU_R10000
500 select SYS_SUPPORTS_64BIT_KERNEL
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_NUMA
503 select SYS_SUPPORTS_SMP
505 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
506 workstations. To compile a Linux kernel that runs on these, say Y
510 bool "SGI IP28 (Indigo2 R10k)"
516 select DEFAULT_SGI_PARTITION
517 select DMA_NONCOHERENT
518 select GENERIC_ISA_DMA_SUPPORT_BROKEN
524 select SGI_HAS_INDYDOG
530 select SYS_HAS_CPU_R10000
532 # Disable EARLY_PRINTK for now since it leads to overwritten prom
533 # memory during early boot on some machines.
535 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
536 # for a more details discussion
538 # select SYS_HAS_EARLY_PRINTK
539 select SYS_SUPPORTS_64BIT_KERNEL
540 select SYS_SUPPORTS_BIG_ENDIAN
542 This is the SGI Indigo2 with R10000 processor. To compile a Linux
543 kernel that runs on these, say Y here.
552 select DMA_NONCOHERENT
555 select R5000_CPU_SCACHE
556 select RM7000_CPU_SCACHE
557 select SYS_HAS_CPU_R5000
558 select SYS_HAS_CPU_R10000 if BROKEN
559 select SYS_HAS_CPU_RM7000
560 select SYS_HAS_CPU_NEVADA
561 select SYS_SUPPORTS_64BIT_KERNEL
562 select SYS_SUPPORTS_BIG_ENDIAN
564 If you want this kernel to run on SGI O2 workstation, say Y here.
567 bool "Sibyte BCM91120C-CRhine"
570 select SIBYTE_BCM1120
572 select SYS_HAS_CPU_SB1
573 select SYS_SUPPORTS_BIG_ENDIAN
574 select SYS_SUPPORTS_LITTLE_ENDIAN
577 bool "Sibyte BCM91120x-Carmel"
580 select SIBYTE_BCM1120
582 select SYS_HAS_CPU_SB1
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_LITTLE_ENDIAN
587 bool "Sibyte BCM91125C-CRhone"
590 select SIBYTE_BCM1125
592 select SYS_HAS_CPU_SB1
593 select SYS_SUPPORTS_BIG_ENDIAN
594 select SYS_SUPPORTS_HIGHMEM
595 select SYS_SUPPORTS_LITTLE_ENDIAN
598 bool "Sibyte BCM91125E-Rhone"
601 select SIBYTE_BCM1125H
603 select SYS_HAS_CPU_SB1
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_LITTLE_ENDIAN
608 bool "Sibyte BCM91250A-SWARM"
611 select HAVE_PATA_PLATFORM
612 select NR_CPUS_DEFAULT_2
615 select SYS_HAS_CPU_SB1
616 select SYS_SUPPORTS_BIG_ENDIAN
617 select SYS_SUPPORTS_HIGHMEM
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select ZONE_DMA32 if 64BIT
621 config SIBYTE_LITTLESUR
622 bool "Sibyte BCM91250C2-LittleSur"
625 select HAVE_PATA_PLATFORM
626 select NR_CPUS_DEFAULT_2
629 select SYS_HAS_CPU_SB1
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select SYS_SUPPORTS_HIGHMEM
632 select SYS_SUPPORTS_LITTLE_ENDIAN
634 config SIBYTE_SENTOSA
635 bool "Sibyte BCM91250E-Sentosa"
638 select NR_CPUS_DEFAULT_2
641 select SYS_HAS_CPU_SB1
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select SYS_SUPPORTS_LITTLE_ENDIAN
646 bool "Sibyte BCM91480B-BigSur"
649 select NR_CPUS_DEFAULT_4
650 select SIBYTE_BCM1x80
652 select SYS_HAS_CPU_SB1
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select SYS_SUPPORTS_HIGHMEM
655 select SYS_SUPPORTS_LITTLE_ENDIAN
656 select ZONE_DMA32 if 64BIT
659 bool "SNI RM200/300/400"
660 select FW_ARC if CPU_LITTLE_ENDIAN
661 select FW_ARC32 if CPU_LITTLE_ENDIAN
662 select FW_SNIPROM if CPU_BIG_ENDIAN
663 select ARCH_MAY_HAVE_PC_FDC
667 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
668 select DMA_NONCOHERENT
669 select GENERIC_ISA_DMA
670 select HAVE_PCSPKR_PLATFORM
677 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
678 select SYS_HAS_CPU_R4X00
679 select SYS_HAS_CPU_R5000
680 select SYS_HAS_CPU_R10000
681 select R5000_CPU_SCACHE
682 select SYS_HAS_EARLY_PRINTK
683 select SYS_SUPPORTS_32BIT_KERNEL
684 select SYS_SUPPORTS_64BIT_KERNEL
685 select SYS_SUPPORTS_BIG_ENDIAN
686 select SYS_SUPPORTS_HIGHMEM
687 select SYS_SUPPORTS_LITTLE_ENDIAN
689 The SNI RM200/300/400 are MIPS-based machines manufactured by
690 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
691 Technology and now in turn merged with Fujitsu. Say Y here to
692 support this machine type.
695 bool "Toshiba TX39 series based machines"
698 bool "Toshiba TX49 series based machines"
700 config MIKROTIK_RB532
701 bool "Mikrotik RB532 boards"
704 select DMA_NONCOHERENT
707 select SYS_HAS_CPU_MIPS32_R1
708 select SYS_SUPPORTS_32BIT_KERNEL
709 select SYS_SUPPORTS_LITTLE_ENDIAN
712 select ARCH_REQUIRE_GPIOLIB
714 Support the Mikrotik(tm) RouterBoard 532 series,
715 based on the IDT RC32434 SoC.
717 config CAVIUM_OCTEON_SOC
718 bool "Cavium Networks Octeon SoC based boards"
720 select 64BIT_PHYS_ADDR
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
725 select SYS_SUPPORTS_HOTPLUG_CPU
726 select SYS_HAS_EARLY_PRINTK
727 select SYS_HAS_CPU_CAVIUM_OCTEON
730 select ARCH_SUPPORTS_MSI
732 select USB_ARCH_HAS_OHCI
733 select USB_ARCH_HAS_EHCI
736 This option supports all of the Octeon reference boards from Cavium
737 Networks. It builds a kernel that dynamically determines the Octeon
738 CPU type and supports all known board reference implementations.
739 Some of the supported boards are:
746 Say Y here for most Octeon reference boards.
749 bool "Netlogic XLR/XLS based systems"
752 select SYS_HAS_CPU_XLR
753 select SYS_SUPPORTS_SMP
756 select SYS_SUPPORTS_32BIT_KERNEL
757 select SYS_SUPPORTS_64BIT_KERNEL
758 select 64BIT_PHYS_ADDR
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_HIGHMEM
762 select NR_CPUS_DEFAULT_32
766 select ARCH_SUPPORTS_MSI
767 select ZONE_DMA32 if 64BIT
769 select SYS_HAS_EARLY_PRINTK
770 select USB_ARCH_HAS_OHCI if USB_SUPPORT
771 select USB_ARCH_HAS_EHCI if USB_SUPPORT
772 select SYS_SUPPORTS_ZBOOT
773 select SYS_SUPPORTS_ZBOOT_UART16550
775 Support for systems based on Netlogic XLR and XLS processors.
776 Say Y here if you have a XLR or XLS based board.
779 bool "Netlogic XLP based systems"
782 select SYS_HAS_CPU_XLP
783 select SYS_SUPPORTS_SMP
785 select SYS_SUPPORTS_32BIT_KERNEL
786 select SYS_SUPPORTS_64BIT_KERNEL
787 select 64BIT_PHYS_ADDR
788 select SYS_SUPPORTS_BIG_ENDIAN
789 select SYS_SUPPORTS_LITTLE_ENDIAN
790 select SYS_SUPPORTS_HIGHMEM
792 select NR_CPUS_DEFAULT_32
796 select ZONE_DMA32 if 64BIT
798 select SYS_HAS_EARLY_PRINTK
800 select SYS_SUPPORTS_ZBOOT
801 select SYS_SUPPORTS_ZBOOT_UART16550
803 This board is based on Netlogic XLP Processor.
804 Say Y here if you have a XLP based board.
808 source "arch/mips/alchemy/Kconfig"
809 source "arch/mips/ath79/Kconfig"
810 source "arch/mips/bcm47xx/Kconfig"
811 source "arch/mips/bcm63xx/Kconfig"
812 source "arch/mips/jazz/Kconfig"
813 source "arch/mips/jz4740/Kconfig"
814 source "arch/mips/lantiq/Kconfig"
815 source "arch/mips/lasat/Kconfig"
816 source "arch/mips/pmcs-msp71xx/Kconfig"
817 source "arch/mips/powertv/Kconfig"
818 source "arch/mips/ralink/Kconfig"
819 source "arch/mips/sgi-ip27/Kconfig"
820 source "arch/mips/sibyte/Kconfig"
821 source "arch/mips/txx9/Kconfig"
822 source "arch/mips/vr41xx/Kconfig"
823 source "arch/mips/cavium-octeon/Kconfig"
824 source "arch/mips/loongson/Kconfig"
825 source "arch/mips/loongson1/Kconfig"
826 source "arch/mips/netlogic/Kconfig"
830 config RWSEM_GENERIC_SPINLOCK
834 config RWSEM_XCHGADD_ALGORITHM
837 config ARCH_HAS_ILOG2_U32
841 config ARCH_HAS_ILOG2_U64
845 config GENERIC_HWEIGHT
849 config GENERIC_CALIBRATE_DELAY
853 config SCHED_OMIT_FRAME_POINTER
858 # Select some configuration options automatically based on user selections.
863 config ARCH_MAY_HAVE_PC_FDC
909 select ARCH_REQUIRE_GPIOLIB
915 config ARCH_DMA_ADDR_T_64BIT
916 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
921 config DMA_NONCOHERENT
923 select NEED_DMA_MAP_STATE
925 config NEED_DMA_MAP_STATE
928 config SYS_HAS_EARLY_PRINTK
932 bool "Support for hot-pluggable CPUs"
933 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
935 Say Y here to allow turning CPUs off and on. CPUs can be
936 controlled through /sys/devices/system/cpu.
937 (Note: power management support will enable this option
938 automatically on SMP systems. )
939 Say N if you want to disable CPU hotplug.
941 config SYS_SUPPORTS_HOTPLUG_CPU
965 config GENERIC_ISA_DMA
967 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
970 config GENERIC_ISA_DMA_SUPPORT_BROKEN
972 select GENERIC_ISA_DMA
981 # Endianness selection. Sufficiently obscure so many users don't know what to
982 # answer,so we try hard to limit the available choices. Also the use of a
983 # choice statement should be more obvious to the user.
986 prompt "Endianness selection"
988 Some MIPS machines can be configured for either little or big endian
989 byte order. These modes require different kernels and a different
990 Linux distribution. In general there is one preferred byteorder for a
991 particular system but some systems are just as commonly used in the
992 one or the other endianness.
994 config CPU_BIG_ENDIAN
996 depends on SYS_SUPPORTS_BIG_ENDIAN
998 config CPU_LITTLE_ENDIAN
1000 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1007 config SYS_SUPPORTS_APM_EMULATION
1010 config SYS_SUPPORTS_BIG_ENDIAN
1013 config SYS_SUPPORTS_LITTLE_ENDIAN
1016 config SYS_SUPPORTS_HUGETLBFS
1018 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1021 config MIPS_HUGE_TLB_SUPPORT
1022 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1045 config PCI_GT64XXX_PCI0
1048 config NO_EXCEPT_FILL
1055 select DMA_NONCOHERENT
1057 select SWAP_IO_SPACE
1058 select SYS_HAS_CPU_R5500
1059 select SYS_SUPPORTS_32BIT_KERNEL
1060 select SYS_SUPPORTS_64BIT_KERNEL
1061 select SYS_SUPPORTS_BIG_ENDIAN
1068 select DMA_NONCOHERENT
1069 select SYS_HAS_CPU_MIPS32_R2
1070 select SYS_SUPPORTS_32BIT_KERNEL
1071 select SYS_SUPPORTS_LITTLE_ENDIAN
1072 select SYS_SUPPORTS_BIG_ENDIAN
1073 select CPU_MIPSR2_IRQ_VI
1079 config SWAP_IO_SPACE
1082 config SGI_HAS_INDYDOG
1094 config SGI_HAS_ZILOG
1097 config SGI_HAS_I8042
1100 config DEFAULT_SGI_PARTITION
1112 config MIPS_L1_CACHE_SHIFT
1114 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1115 default "6" if MIPS_CPU_SCACHE
1116 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1119 config HAVE_STD_PC_SERIAL_PORT
1123 bool "ARC console support"
1124 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1128 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1133 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1142 menu "CPU selection"
1148 config CPU_LOONGSON2E
1150 depends on SYS_HAS_CPU_LOONGSON2E
1151 select CPU_LOONGSON2
1153 The Loongson 2E processor implements the MIPS III instruction set
1154 with many extensions.
1156 It has an internal FPGA northbridge, which is compatible to
1159 config CPU_LOONGSON2F
1161 depends on SYS_HAS_CPU_LOONGSON2F
1162 select CPU_LOONGSON2
1163 select ARCH_REQUIRE_GPIOLIB
1165 The Loongson 2F processor implements the MIPS III instruction set
1166 with many extensions.
1168 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1169 have a similar programming interface with FPGA northbridge used in
1172 config CPU_LOONGSON1B
1174 depends on SYS_HAS_CPU_LOONGSON1B
1175 select CPU_LOONGSON1
1177 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1178 release 2 instruction set.
1180 config CPU_MIPS32_R1
1181 bool "MIPS32 Release 1"
1182 depends on SYS_HAS_CPU_MIPS32_R1
1183 select CPU_HAS_PREFETCH
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1187 Choose this option to build a kernel for release 1 or later of the
1188 MIPS32 architecture. Most modern embedded systems with a 32-bit
1189 MIPS processor are based on a MIPS32 processor. If you know the
1190 specific type of processor in your system, choose those that one
1191 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1192 Release 2 of the MIPS32 architecture is available since several
1193 years so chances are you even have a MIPS32 Release 2 processor
1194 in which case you should choose CPU_MIPS32_R2 instead for better
1197 config CPU_MIPS32_R2
1198 bool "MIPS32 Release 2"
1199 depends on SYS_HAS_CPU_MIPS32_R2
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_HIGHMEM
1205 Choose this option to build a kernel for release 2 or later of the
1206 MIPS32 architecture. Most modern embedded systems with a 32-bit
1207 MIPS processor are based on a MIPS32 processor. If you know the
1208 specific type of processor in your system, choose those that one
1209 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1211 config CPU_MIPS64_R1
1212 bool "MIPS64 Release 1"
1213 depends on SYS_HAS_CPU_MIPS64_R1
1214 select CPU_HAS_PREFETCH
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1217 select CPU_SUPPORTS_HIGHMEM
1218 select CPU_SUPPORTS_HUGEPAGES
1220 Choose this option to build a kernel for release 1 or later of the
1221 MIPS64 architecture. Many modern embedded systems with a 64-bit
1222 MIPS processor are based on a MIPS64 processor. If you know the
1223 specific type of processor in your system, choose those that one
1224 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1225 Release 2 of the MIPS64 architecture is available since several
1226 years so chances are you even have a MIPS64 Release 2 processor
1227 in which case you should choose CPU_MIPS64_R2 instead for better
1230 config CPU_MIPS64_R2
1231 bool "MIPS64 Release 2"
1232 depends on SYS_HAS_CPU_MIPS64_R2
1233 select CPU_HAS_PREFETCH
1234 select CPU_SUPPORTS_32BIT_KERNEL
1235 select CPU_SUPPORTS_64BIT_KERNEL
1236 select CPU_SUPPORTS_HIGHMEM
1237 select CPU_SUPPORTS_HUGEPAGES
1239 Choose this option to build a kernel for release 2 or later of the
1240 MIPS64 architecture. Many modern embedded systems with a 64-bit
1241 MIPS processor are based on a MIPS64 processor. If you know the
1242 specific type of processor in your system, choose those that one
1243 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1247 depends on SYS_HAS_CPU_R3000
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_HIGHMEM
1252 Please make sure to pick the right CPU type. Linux/MIPS is not
1253 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1254 *not* work on R4000 machines and vice versa. However, since most
1255 of the supported machines have an R4000 (or similar) CPU, R4x00
1256 might be a safe bet. If the resulting kernel does not work,
1257 try to recompile with R3000.
1261 depends on SYS_HAS_CPU_TX39XX
1262 select CPU_SUPPORTS_32BIT_KERNEL
1266 depends on SYS_HAS_CPU_VR41XX
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1270 The options selects support for the NEC VR4100 series of processors.
1271 Only choose this option if you have one of these processors as a
1272 kernel built with this option will not run on any other type of
1273 processor or vice versa.
1277 depends on SYS_HAS_CPU_R4300
1278 select CPU_SUPPORTS_32BIT_KERNEL
1279 select CPU_SUPPORTS_64BIT_KERNEL
1281 MIPS Technologies R4300-series processors.
1285 depends on SYS_HAS_CPU_R4X00
1286 select CPU_SUPPORTS_32BIT_KERNEL
1287 select CPU_SUPPORTS_64BIT_KERNEL
1288 select CPU_SUPPORTS_HUGEPAGES
1290 MIPS Technologies R4000-series processors other than 4300, including
1291 the R4000, R4400, R4600, and 4700.
1295 depends on SYS_HAS_CPU_TX49XX
1296 select CPU_HAS_PREFETCH
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1299 select CPU_SUPPORTS_HUGEPAGES
1303 depends on SYS_HAS_CPU_R5000
1304 select CPU_SUPPORTS_32BIT_KERNEL
1305 select CPU_SUPPORTS_64BIT_KERNEL
1306 select CPU_SUPPORTS_HUGEPAGES
1308 MIPS Technologies R5000-series processors other than the Nevada.
1312 depends on SYS_HAS_CPU_R5432
1313 select CPU_SUPPORTS_32BIT_KERNEL
1314 select CPU_SUPPORTS_64BIT_KERNEL
1315 select CPU_SUPPORTS_HUGEPAGES
1319 depends on SYS_HAS_CPU_R5500
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1322 select CPU_SUPPORTS_HUGEPAGES
1324 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1329 depends on SYS_HAS_CPU_R6000
1330 select CPU_SUPPORTS_32BIT_KERNEL
1332 MIPS Technologies R6000 and R6000A series processors. Note these
1333 processors are extremely rare and the support for them is incomplete.
1337 depends on SYS_HAS_CPU_NEVADA
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HUGEPAGES
1342 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1346 depends on SYS_HAS_CPU_R8000
1347 select CPU_HAS_PREFETCH
1348 select CPU_SUPPORTS_64BIT_KERNEL
1350 MIPS Technologies R8000 processors. Note these processors are
1351 uncommon and the support for them is incomplete.
1355 depends on SYS_HAS_CPU_R10000
1356 select CPU_HAS_PREFETCH
1357 select CPU_SUPPORTS_32BIT_KERNEL
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_HUGEPAGES
1362 MIPS Technologies R10000-series processors.
1366 depends on SYS_HAS_CPU_RM7000
1367 select CPU_HAS_PREFETCH
1368 select CPU_SUPPORTS_32BIT_KERNEL
1369 select CPU_SUPPORTS_64BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1371 select CPU_SUPPORTS_HUGEPAGES
1375 depends on SYS_HAS_CPU_SB1
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_64BIT_KERNEL
1378 select CPU_SUPPORTS_HIGHMEM
1379 select CPU_SUPPORTS_HUGEPAGES
1380 select WEAK_ORDERING
1382 config CPU_CAVIUM_OCTEON
1383 bool "Cavium Octeon processor"
1384 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1385 select ARCH_SPARSEMEM_ENABLE
1386 select CPU_HAS_PREFETCH
1387 select CPU_SUPPORTS_64BIT_KERNEL
1388 select SYS_SUPPORTS_SMP
1389 select NR_CPUS_DEFAULT_16
1390 select WEAK_ORDERING
1391 select CPU_SUPPORTS_HIGHMEM
1392 select CPU_SUPPORTS_HUGEPAGES
1395 select USB_EHCI_BIG_ENDIAN_MMIO
1397 The Cavium Octeon processor is a highly integrated chip containing
1398 many ethernet hardware widgets for networking tasks. The processor
1399 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1400 Full details can be found at http://www.caviumnetworks.com.
1402 config CPU_BMIPS3300
1404 depends on SYS_HAS_CPU_BMIPS3300
1407 Broadcom BMIPS3300 processors.
1409 config CPU_BMIPS4350
1411 depends on SYS_HAS_CPU_BMIPS4350
1413 select SYS_SUPPORTS_SMP
1414 select SYS_SUPPORTS_HOTPLUG_CPU
1416 Broadcom BMIPS4350 ("VIPER") processors.
1418 config CPU_BMIPS4380
1420 depends on SYS_HAS_CPU_BMIPS4380
1422 select SYS_SUPPORTS_SMP
1423 select SYS_SUPPORTS_HOTPLUG_CPU
1425 Broadcom BMIPS4380 processors.
1427 config CPU_BMIPS5000
1429 depends on SYS_HAS_CPU_BMIPS5000
1431 select CPU_SUPPORTS_HIGHMEM
1432 select MIPS_CPU_SCACHE
1433 select SYS_SUPPORTS_SMP
1434 select SYS_SUPPORTS_HOTPLUG_CPU
1436 Broadcom BMIPS5000 processors.
1439 bool "Netlogic XLR SoC"
1440 depends on SYS_HAS_CPU_XLR
1441 select CPU_SUPPORTS_32BIT_KERNEL
1442 select CPU_SUPPORTS_64BIT_KERNEL
1443 select CPU_SUPPORTS_HIGHMEM
1444 select CPU_SUPPORTS_HUGEPAGES
1445 select WEAK_ORDERING
1446 select WEAK_REORDERING_BEYOND_LLSC
1448 Netlogic Microsystems XLR/XLS processors.
1451 bool "Netlogic XLP SoC"
1452 depends on SYS_HAS_CPU_XLP
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_64BIT_KERNEL
1455 select CPU_SUPPORTS_HIGHMEM
1456 select WEAK_ORDERING
1457 select WEAK_REORDERING_BEYOND_LLSC
1458 select CPU_HAS_PREFETCH
1461 Netlogic Microsystems XLP processors.
1465 config CPU_NOP_WORKAROUNDS
1468 config CPU_JUMP_WORKAROUNDS
1471 config CPU_LOONGSON2F_WORKAROUNDS
1472 bool "Loongson 2F Workarounds"
1474 select CPU_NOP_WORKAROUNDS
1475 select CPU_JUMP_WORKAROUNDS
1477 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1478 require workarounds. Without workarounds the system may hang
1479 unexpectedly. For more information please refer to the gas
1480 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1482 Loongson 2F03 and later have fixed these issues and no workarounds
1483 are needed. The workarounds have no significant side effect on them
1484 but may decrease the performance of the system so this option should
1485 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1488 If unsure, please say Y.
1489 endif # CPU_LOONGSON2F
1491 config SYS_SUPPORTS_ZBOOT
1493 select HAVE_KERNEL_GZIP
1494 select HAVE_KERNEL_BZIP2
1495 select HAVE_KERNEL_LZMA
1496 select HAVE_KERNEL_LZO
1498 config SYS_SUPPORTS_ZBOOT_UART16550
1500 select SYS_SUPPORTS_ZBOOT
1502 config CPU_LOONGSON2
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_64BIT_KERNEL
1506 select CPU_SUPPORTS_HIGHMEM
1507 select CPU_SUPPORTS_HUGEPAGES
1509 config CPU_LOONGSON1
1513 select CPU_HAS_PREFETCH
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select DMA_NONCOHERENT
1523 select SWAP_IO_SPACE
1524 select WEAK_ORDERING
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_BMIPS3300
1601 config SYS_HAS_CPU_BMIPS4350
1604 config SYS_HAS_CPU_BMIPS4380
1607 config SYS_HAS_CPU_BMIPS5000
1610 config SYS_HAS_CPU_XLR
1613 config SYS_HAS_CPU_XLP
1617 # CPU may reorder R->R, R->W, W->R, W->W
1618 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1620 config WEAK_ORDERING
1624 # CPU may reorder reads and writes beyond LL/SC
1625 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1627 config WEAK_REORDERING_BEYOND_LLSC
1632 # These two indicate any level of the MIPS32 and MIPS64 architecture
1636 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1640 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1643 # These two indicate the revision of the architecture, either Release 1 or Release 2
1647 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1651 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1653 config SYS_SUPPORTS_32BIT_KERNEL
1655 config SYS_SUPPORTS_64BIT_KERNEL
1657 config CPU_SUPPORTS_32BIT_KERNEL
1659 config CPU_SUPPORTS_64BIT_KERNEL
1661 config CPU_SUPPORTS_CPUFREQ
1663 config CPU_SUPPORTS_ADDRWINCFG
1665 config CPU_SUPPORTS_HUGEPAGES
1667 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1669 config MIPS_PGD_C0_CONTEXT
1671 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1674 # Set to y for ptrace access to watch registers.
1676 config HARDWARE_WATCHPOINTS
1678 default y if CPU_MIPSR1 || CPU_MIPSR2
1683 prompt "Kernel code model"
1685 You should only select this option if you have a workload that
1686 actually benefits from 64-bit processing or if your machine has
1687 large memory. You will only be presented a single option in this
1688 menu if your system does not support both 32-bit and 64-bit kernels.
1691 bool "32-bit kernel"
1692 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1695 Select this option if you want to build a 32-bit kernel.
1697 bool "64-bit kernel"
1698 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1700 Select this option if you want to build a 64-bit kernel.
1705 bool "KVM Guest Kernel"
1706 depends on BROKEN_ON_SMP
1708 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1710 config KVM_HOST_FREQ
1711 int "KVM Host Processor Frequency (MHz)"
1712 depends on KVM_GUEST
1715 Select this option if building a guest kernel for KVM to skip
1716 RTC emulation when determining guest CPU Frequency. Instead, the guest
1717 processor frequency is automatically derived from the host frequency.
1720 prompt "Kernel page size"
1721 default PAGE_SIZE_4KB
1723 config PAGE_SIZE_4KB
1725 depends on !CPU_LOONGSON2
1727 This option select the standard 4kB Linux page size. On some
1728 R3000-family processors this is the only available page size. Using
1729 4kB page size will minimize memory consumption and is therefore
1730 recommended for low memory systems.
1732 config PAGE_SIZE_8KB
1734 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1736 Using 8kB page size will result in higher performance kernel at
1737 the price of higher memory consumption. This option is available
1738 only on R8000 and cnMIPS processors. Note that you will need a
1739 suitable Linux distribution to support this.
1741 config PAGE_SIZE_16KB
1743 depends on !CPU_R3000 && !CPU_TX39XX
1745 Using 16kB page size will result in higher performance kernel at
1746 the price of higher memory consumption. This option is available on
1747 all non-R3000 family processors. Note that you will need a suitable
1748 Linux distribution to support this.
1750 config PAGE_SIZE_32KB
1752 depends on CPU_CAVIUM_OCTEON
1754 Using 32kB page size will result in higher performance kernel at
1755 the price of higher memory consumption. This option is available
1756 only on cnMIPS cores. Note that you will need a suitable Linux
1757 distribution to support this.
1759 config PAGE_SIZE_64KB
1761 depends on !CPU_R3000 && !CPU_TX39XX
1763 Using 64kB page size will result in higher performance kernel at
1764 the price of higher memory consumption. This option is available on
1765 all non-R3000 family processor. Not that at the time of this
1766 writing this option is still high experimental.
1770 config FORCE_MAX_ZONEORDER
1771 int "Maximum zone order"
1772 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1773 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1774 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1775 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1776 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1777 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1781 The kernel memory allocator divides physically contiguous memory
1782 blocks into "zones", where each zone is a power of two number of
1783 pages. This option selects the largest power of two that the kernel
1784 keeps in the memory allocator. If you need to allocate very large
1785 blocks of physically contiguous memory, then you may need to
1786 increase this value.
1788 This config option is actually maximum order plus one. For example,
1789 a value of 11 means that the largest free memory block is 2^10 pages.
1791 The page size is not necessarily 4KB. Keep this in mind
1792 when choosing a value for this option.
1795 bool "Use GIC global counter for clock events"
1796 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1798 Use the GIC global counter for the clock events. The R4K clock
1799 event driver is always present, so if the platform ends up not
1800 detecting a GIC, it will fall back to the R4K timer for the
1801 generation of clock events.
1806 config IP22_CPU_SCACHE
1811 # Support for a MIPS32 / MIPS64 style S-caches
1813 config MIPS_CPU_SCACHE
1817 config R5000_CPU_SCACHE
1821 config RM7000_CPU_SCACHE
1825 config SIBYTE_DMA_PAGEOPS
1826 bool "Use DMA to clear/copy pages"
1829 Instead of using the CPU to zero and copy pages, use a Data Mover
1830 channel. These DMA channels are otherwise unused by the standard
1831 SiByte Linux port. Seems to give a small performance benefit.
1833 config CPU_HAS_PREFETCH
1836 config CPU_GENERIC_DUMP_TLB
1838 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1842 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1844 config CPU_R4K_CACHE_TLB
1846 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1849 prompt "MIPS MT options"
1851 config MIPS_MT_DISABLED
1852 bool "Disable multithreading support."
1854 Use this option if your workload can't take advantage of
1855 MIPS hardware multithreading support. On systems that don't have
1856 the option of an MT-enabled processor this option will be the only
1857 option in this menu.
1860 bool "Use 1 TC on each available VPE for SMP"
1861 depends on SYS_SUPPORTS_MULTITHREADING
1862 select CPU_MIPSR2_IRQ_VI
1863 select CPU_MIPSR2_IRQ_EI
1865 select NR_CPUS_DEFAULT_2
1867 select SYS_SUPPORTS_SCHED_SMT if SMP
1868 select SYS_SUPPORTS_SMP
1870 select MIPS_PERF_SHARED_TC_COUNTERS
1872 This is a kernel model which is known a VSMP but lately has been
1873 marketesed into SMVP.
1874 Virtual SMP uses the processor's VPEs to implement virtual
1875 processors. In currently available configuration of the 34K processor
1876 this allows for a dual processor. Both processors will share the same
1877 primary caches; each will obtain the half of the TLB for it's own
1878 exclusive use. For a layman this model can be described as similar to
1879 what Intel calls Hyperthreading.
1881 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1884 bool "SMTC: Use all TCs on all VPEs for SMP"
1885 depends on CPU_MIPS32_R2
1886 #depends on CPU_MIPS64_R2 # once there is hardware ...
1887 depends on SYS_SUPPORTS_MULTITHREADING
1888 select CPU_MIPSR2_IRQ_VI
1889 select CPU_MIPSR2_IRQ_EI
1891 select NR_CPUS_DEFAULT_8
1893 select SYS_SUPPORTS_SMP
1896 This is a kernel model which is known a SMTC or lately has been
1897 marketesed into SMVP.
1898 is presenting the available TC's of the core as processors to Linux.
1899 On currently available 34K processors this means a Linux system will
1900 see up to 5 processors. The implementation of the SMTC kernel differs
1901 significantly from VSMP and cannot efficiently coexist in the same
1902 kernel binary so the choice between VSMP and SMTC is a compile time
1905 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1913 bool "SMT (multithreading) scheduler support"
1914 depends on SYS_SUPPORTS_SCHED_SMT
1917 SMT scheduler support improves the CPU scheduler's decision making
1918 when dealing with MIPS MT enabled cores at a cost of slightly
1919 increased overhead in some places. If unsure say N here.
1921 config SYS_SUPPORTS_SCHED_SMT
1924 config SYS_SUPPORTS_MULTITHREADING
1927 config MIPS_MT_FPAFF
1928 bool "Dynamic FPU affinity for FP-intensive threads"
1930 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1932 config MIPS_VPE_LOADER
1933 bool "VPE loader support."
1934 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1935 select CPU_MIPSR2_IRQ_VI
1936 select CPU_MIPSR2_IRQ_EI
1939 Includes a loader for loading an elf relocatable object
1940 onto another VPE and running it.
1942 config MIPS_MT_SMTC_IM_BACKSTOP
1943 bool "Use per-TC register bits as backstop for inhibited IM bits"
1944 depends on MIPS_MT_SMTC
1947 To support multiple TC microthreads acting as "CPUs" within
1948 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1949 during interrupt handling. To support legacy drivers and interrupt
1950 controller management code, SMTC has a "backstop" to track and
1951 if necessary restore the interrupt mask. This has some performance
1952 impact on interrupt service overhead.
1954 config MIPS_MT_SMTC_IRQAFF
1955 bool "Support IRQ affinity API"
1956 depends on MIPS_MT_SMTC
1959 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1960 for SMTC Linux kernel. Requires platform support, of which
1961 an example can be found in the MIPS kernel i8259 and Malta
1962 platform code. Adds some overhead to interrupt dispatch, and
1963 should be used only if you know what you are doing.
1965 config MIPS_VPE_LOADER_TOM
1966 bool "Load VPE program into memory hidden from linux"
1967 depends on MIPS_VPE_LOADER
1970 The loader can use memory that is present but has been hidden from
1971 Linux using the kernel command line option "mem=xxMB". It's up to
1972 you to ensure the amount you put in the option and the space your
1973 program requires is less or equal to the amount physically present.
1975 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1976 config MIPS_VPE_APSP_API
1977 bool "Enable support for AP/SP API (RTLX)"
1978 depends on MIPS_VPE_LOADER
1982 bool "MIPS CMP framework support"
1983 depends on SYS_SUPPORTS_MIPS_CMP
1985 select SYS_SUPPORTS_SMP
1986 select SYS_SUPPORTS_SCHED_SMT if SMP
1987 select WEAK_ORDERING
1990 This is a placeholder option for the GCMP work. It will need to
1991 be handled differently...
1993 config SB1_PASS_1_WORKAROUNDS
1995 depends on CPU_SB1_PASS_1
1998 config SB1_PASS_2_WORKAROUNDS
2000 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2003 config SB1_PASS_2_1_WORKAROUNDS
2005 depends on CPU_SB1 && CPU_SB1_PASS_2
2009 config 64BIT_PHYS_ADDR
2012 config ARCH_PHYS_ADDR_T_64BIT
2013 def_bool 64BIT_PHYS_ADDR
2015 config CPU_HAS_SMARTMIPS
2016 depends on SYS_SUPPORTS_SMARTMIPS
2017 bool "Support for the SmartMIPS ASE"
2019 SmartMIPS is a extension of the MIPS32 architecture aimed at
2020 increased security at both hardware and software level for
2021 smartcards. Enabling this option will allow proper use of the
2022 SmartMIPS instructions by Linux applications. However a kernel with
2023 this option will not work on a MIPS core without SmartMIPS core. If
2024 you don't know you probably don't have SmartMIPS and should say N
2027 config CPU_MICROMIPS
2028 depends on SYS_SUPPORTS_MICROMIPS
2029 bool "Build kernel using microMIPS ISA"
2031 When this option is enabled the kernel will be built using the
2041 # Vectored interrupt mode is an R2 feature
2043 config CPU_MIPSR2_IRQ_VI
2047 # Extended interrupt mode is an R2 feature
2049 config CPU_MIPSR2_IRQ_EI
2054 depends on !CPU_R3000
2060 config CPU_DADDI_WORKAROUNDS
2063 config CPU_R4000_WORKAROUNDS
2065 select CPU_R4400_WORKAROUNDS
2067 config CPU_R4400_WORKAROUNDS
2071 # - Highmem only makes sense for the 32-bit kernel.
2072 # - The current highmem code will only work properly on physically indexed
2073 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2074 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2075 # moment we protect the user and offer the highmem option only on machines
2076 # where it's known to be safe. This will not offer highmem on a few systems
2077 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2078 # indexed CPUs but we're playing safe.
2079 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2080 # know they might have memory configurations that could make use of highmem
2084 bool "High Memory Support"
2085 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2087 config CPU_SUPPORTS_HIGHMEM
2090 config SYS_SUPPORTS_HIGHMEM
2093 config SYS_SUPPORTS_SMARTMIPS
2096 config SYS_SUPPORTS_MICROMIPS
2099 config ARCH_FLATMEM_ENABLE
2101 depends on !NUMA && !CPU_LOONGSON2
2103 config ARCH_DISCONTIGMEM_ENABLE
2105 default y if SGI_IP27
2107 Say Y to support efficient handling of discontiguous physical memory,
2108 for architectures which are either NUMA (Non-Uniform Memory Access)
2109 or have huge holes in the physical address space for other reasons.
2110 See <file:Documentation/vm/numa> for more.
2112 config ARCH_SPARSEMEM_ENABLE
2114 select SPARSEMEM_STATIC
2118 depends on SYS_SUPPORTS_NUMA
2120 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2121 Access). This option improves performance on systems with more
2122 than two nodes; on two node systems it is generally better to
2123 leave it disabled; on single node systems disable this option
2126 config SYS_SUPPORTS_NUMA
2132 depends on NEED_MULTIPLE_NODES
2134 config HW_PERF_EVENTS
2135 bool "Enable hardware performance counter support for perf events"
2136 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2139 Enable hardware performance counter support for perf events. If
2140 disabled, perf events will use software events only.
2145 bool "Multi-Processing support"
2146 depends on SYS_SUPPORTS_SMP
2147 select USE_GENERIC_SMP_HELPERS
2149 This enables support for systems with more than one CPU. If you have
2150 a system with only one CPU, like most personal computers, say N. If
2151 you have a system with more than one CPU, say Y.
2153 If you say N here, the kernel will run on single and multiprocessor
2154 machines, but will use only one CPU of a multiprocessor machine. If
2155 you say Y here, the kernel will run on many, but not all,
2156 singleprocessor machines. On a singleprocessor machine, the kernel
2157 will run faster if you say N here.
2159 People using multiprocessor machines who say Y here should also say
2160 Y to "Enhanced Real Time Clock Support", below.
2162 See also the SMP-HOWTO available at
2163 <http://www.tldp.org/docs.html#howto>.
2165 If you don't know what to do here, say N.
2170 config SYS_SUPPORTS_MIPS_CMP
2173 config SYS_SUPPORTS_SMP
2176 config NR_CPUS_DEFAULT_1
2179 config NR_CPUS_DEFAULT_2
2182 config NR_CPUS_DEFAULT_4
2185 config NR_CPUS_DEFAULT_8
2188 config NR_CPUS_DEFAULT_16
2191 config NR_CPUS_DEFAULT_32
2194 config NR_CPUS_DEFAULT_64
2198 int "Maximum number of CPUs (2-64)"
2199 range 1 64 if NR_CPUS_DEFAULT_1
2201 default "1" if NR_CPUS_DEFAULT_1
2202 default "2" if NR_CPUS_DEFAULT_2
2203 default "4" if NR_CPUS_DEFAULT_4
2204 default "8" if NR_CPUS_DEFAULT_8
2205 default "16" if NR_CPUS_DEFAULT_16
2206 default "32" if NR_CPUS_DEFAULT_32
2207 default "64" if NR_CPUS_DEFAULT_64
2209 This allows you to specify the maximum number of CPUs which this
2210 kernel will support. The maximum supported value is 32 for 32-bit
2211 kernel and 64 for 64-bit kernels; the minimum value which makes
2212 sense is 1 for Qemu (useful only for kernel debugging purposes)
2213 and 2 for all others.
2215 This is purely to save memory - each supported CPU adds
2216 approximately eight kilobytes to the kernel image. For best
2217 performance should round up your number of processors to the next
2220 config MIPS_PERF_SHARED_TC_COUNTERS
2224 # Timer Interrupt Frequency Configuration
2228 prompt "Timer frequency"
2231 Allows the configuration of the timer frequency.
2234 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2240 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2243 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2246 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2249 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2252 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2256 config SYS_SUPPORTS_48HZ
2259 config SYS_SUPPORTS_100HZ
2262 config SYS_SUPPORTS_128HZ
2265 config SYS_SUPPORTS_250HZ
2268 config SYS_SUPPORTS_256HZ
2271 config SYS_SUPPORTS_1000HZ
2274 config SYS_SUPPORTS_1024HZ
2277 config SYS_SUPPORTS_ARBIT_HZ
2279 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2280 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2281 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2282 !SYS_SUPPORTS_1024HZ
2287 default 100 if HZ_100
2288 default 128 if HZ_128
2289 default 250 if HZ_250
2290 default 256 if HZ_256
2291 default 1000 if HZ_1000
2292 default 1024 if HZ_1024
2294 source "kernel/Kconfig.preempt"
2297 bool "Kexec system call"
2299 kexec is a system call that implements the ability to shutdown your
2300 current kernel, and to start another kernel. It is like a reboot
2301 but it is independent of the system firmware. And like a reboot
2302 you can start any kernel with it, not just Linux.
2304 The name comes from the similarity to the exec system call.
2306 It is an ongoing process to be certain the hardware in a machine
2307 is properly shutdown, so do not be surprised if this code does not
2308 initially work for you. It may help to enable device hotplugging
2309 support. As of this writing the exact hardware interface is
2310 strongly in flux, so no good recommendation can be made.
2313 bool "Kernel crash dumps"
2315 Generate crash dump after being started by kexec.
2316 This should be normally only set in special crash dump kernels
2317 which are loaded in the main kernel with kexec-tools into
2318 a specially reserved region and then later executed after
2319 a crash by kdump/kexec. The crash dump kernel must be compiled
2320 to a memory address not used by the main kernel or firmware using
2323 config PHYSICAL_START
2324 hex "Physical address where the kernel is loaded"
2325 default "0xffffffff84000000" if 64BIT
2326 default "0x84000000" if 32BIT
2327 depends on CRASH_DUMP
2329 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2330 If you plan to use kernel for capturing the crash dump change
2331 this value to start of the reserved region (the "X" value as
2332 specified in the "crashkernel=YM@XM" command line boot parameter
2333 passed to the panic-ed kernel).
2336 bool "Enable seccomp to safely compute untrusted bytecode"
2340 This kernel feature is useful for number crunching applications
2341 that may need to compute untrusted bytecode during their
2342 execution. By using pipes or other transports made available to
2343 the process as file descriptors supporting the read/write
2344 syscalls, it's possible to isolate those applications in
2345 their own address space using seccomp. Once seccomp is
2346 enabled via /proc/<pid>/seccomp, it cannot be disabled
2347 and the task is only allowed to execute a few safe syscalls
2348 defined by each seccomp mode.
2350 If unsure, say Y. Only embedded should say N here.
2352 config CC_STACKPROTECTOR
2353 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2355 This option turns on the -fstack-protector GCC feature. This
2356 feature puts, at the beginning of functions, a canary value on
2357 the stack just before the return address, and validates
2358 the value just before actually returning. Stack based buffer
2359 overflows (that need to overwrite this return address) now also
2360 overwrite the canary, which gets detected and the attack is then
2361 neutralized via a kernel panic.
2363 This feature requires gcc version 4.2 or above.
2368 select OF_EARLY_FLATTREE
2373 config LOCKDEP_SUPPORT
2377 config STACKTRACE_SUPPORT
2381 source "init/Kconfig"
2383 source "kernel/Kconfig.freezer"
2385 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2393 bool "Support for PCI controller"
2394 depends on HW_HAS_PCI
2396 select NO_GENERIC_PCI_IOPORT_MAP
2398 Find out whether you have a PCI motherboard. PCI is the name of a
2399 bus system, i.e. the way the CPU talks to the other stuff inside
2400 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2406 source "drivers/pci/Kconfig"
2408 source "drivers/pci/pcie/Kconfig"
2411 # ISA support is now enabled via select. Too many systems still have the one
2412 # or other ISA chip on the board that users don't know about so don't expect
2413 # users to choose the right thing ...
2420 depends on HW_HAS_EISA
2422 select GENERIC_ISA_DMA
2424 The Extended Industry Standard Architecture (EISA) bus was
2425 developed as an open alternative to the IBM MicroChannel bus.
2427 The EISA bus provided some of the features of the IBM MicroChannel
2428 bus while maintaining backward compatibility with cards made for
2429 the older ISA bus. The EISA bus saw limited use between 1988 and
2430 1995 when it was made obsolete by the PCI bus.
2432 Say Y here if you are building a kernel for an EISA-based machine.
2436 source "drivers/eisa/Kconfig"
2439 bool "TURBOchannel support"
2440 depends on MACH_DECSTATION
2442 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2443 processors. TURBOchannel programming specifications are available
2445 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2447 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2448 Linux driver support status is documented at:
2449 <http://www.linux-mips.org/wiki/DECstation>
2459 select MIPS_EXTERNAL_TIMER
2467 source "drivers/pcmcia/Kconfig"
2469 source "drivers/pci/hotplug/Kconfig"
2472 bool "RapidIO support"
2476 If you say Y here, the kernel will include drivers and
2477 infrastructure code to support RapidIO interconnect devices.
2479 source "drivers/rapidio/Kconfig"
2483 menu "Executable file formats"
2485 source "fs/Kconfig.binfmt"
2490 config MIPS32_COMPAT
2491 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2494 Select this option if you want Linux/MIPS 32-bit binary
2495 compatibility. Since all software available for Linux/MIPS is
2496 currently 32-bit you should say Y here.
2500 depends on MIPS32_COMPAT
2501 select ARCH_WANT_OLD_COMPAT_IPC
2504 config SYSVIPC_COMPAT
2506 depends on COMPAT && SYSVIPC
2510 bool "Kernel support for o32 binaries"
2511 depends on MIPS32_COMPAT
2513 Select this option if you want to run o32 binaries. These are pure
2514 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2515 existing binaries are in this format.
2520 bool "Kernel support for n32 binaries"
2521 depends on MIPS32_COMPAT
2523 Select this option if you want to run n32 binaries. These are
2524 64-bit binaries using 32-bit quantities for addressing and certain
2525 data that would normally be 64-bit. They are used in special
2532 default y if MIPS32_O32 || MIPS32_N32
2536 menu "Power management options"
2538 config ARCH_HIBERNATION_POSSIBLE
2540 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2542 config ARCH_SUSPEND_POSSIBLE
2544 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2546 source "kernel/power/Kconfig"
2550 config MIPS_EXTERNAL_TIMER
2553 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2554 menu "CPU Power Management"
2555 source "drivers/cpufreq/Kconfig"
2559 source "net/Kconfig"
2561 source "drivers/Kconfig"
2563 source "drivers/firmware/Kconfig"
2567 source "arch/mips/Kconfig.debug"
2569 source "security/Kconfig"
2571 source "crypto/Kconfig"
2573 source "lib/Kconfig"
2575 source "arch/mips/kvm/Kconfig"