4 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 RTC_LIB if !MACH_LOONGSON
23 select GENERIC_ATOMIC64 if !64BIT
24 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
26 select HAVE_DMA_API_DEBUG
27 select HAVE_GENERIC_HARDIRQS
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select HAVE_ARCH_JUMP_LABEL
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select IRQ_FORCED_THREADING
34 select HAVE_MEMBLOCK_NODE_MAP
35 select ARCH_DISCARD_MEMBLOCK
36 select GENERIC_SMP_IDLE_THREAD
37 select BUILDTIME_EXTABLE_SORT
38 select GENERIC_CLOCKEVENTS
39 select GENERIC_CMOS_UPDATE
41 menu "Machine selection"
51 bool "Alchemy processor based machines"
52 select 64BIT_PHYS_ADDR
56 select SYS_HAS_CPU_MIPS32_R1
57 select SYS_SUPPORTS_32BIT_KERNEL
58 select SYS_SUPPORTS_APM_EMULATION
60 select ARCH_WANT_OPTIONAL_GPIOLIB
61 select SYS_SUPPORTS_ZBOOT
62 select USB_ARCH_HAS_OHCI
63 select USB_ARCH_HAS_EHCI
66 bool "Texas Instruments AR7"
68 select DMA_NONCOHERENT
74 select SYS_HAS_CPU_MIPS32_R1
75 select SYS_HAS_EARLY_PRINTK
76 select SYS_SUPPORTS_32BIT_KERNEL
77 select SYS_SUPPORTS_LITTLE_ENDIAN
78 select SYS_SUPPORTS_ZBOOT_UART16550
79 select ARCH_REQUIRE_GPIOLIB
83 Support for the Texas Instruments AR7 System-on-a-Chip
84 family: TNETD7100, 7200 and 7300.
87 bool "Atheros AR71XX/AR724X/AR913X based boards"
88 select ARCH_REQUIRE_GPIOLIB
92 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R2
97 select SYS_HAS_EARLY_PRINTK
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_BIG_ENDIAN
101 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
104 bool "Broadcom BCM47XX based boards"
107 select DMA_NONCOHERENT
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_SUPPORTS_LITTLE_ENDIAN
113 select SYS_HAS_EARLY_PRINTK
116 Support for BCM47XX based boards
119 bool "Broadcom BCM63XX based boards"
122 select DMA_NONCOHERENT
124 select SYS_HAS_CPU_MIPS32_R1
125 select SYS_SUPPORTS_32BIT_KERNEL
126 select SYS_SUPPORTS_BIG_ENDIAN
127 select SYS_HAS_EARLY_PRINTK
129 select ARCH_REQUIRE_GPIOLIB
132 Support for BCM63XX based boards
139 select DMA_NONCOHERENT
145 select PCI_GT64XXX_PCI0
147 select SYS_HAS_CPU_NEVADA
148 select SYS_HAS_EARLY_PRINTK
149 select SYS_SUPPORTS_32BIT_KERNEL
150 select SYS_SUPPORTS_64BIT_KERNEL
151 select SYS_SUPPORTS_LITTLE_ENDIAN
153 config MACH_DECSTATION
160 select CPU_DADDI_WORKAROUNDS if 64BIT
161 select CPU_R4000_WORKAROUNDS if 64BIT
162 select CPU_R4400_WORKAROUNDS if 64BIT
163 select DMA_NONCOHERENT
166 select SYS_HAS_CPU_R3000
167 select SYS_HAS_CPU_R4X00
168 select SYS_SUPPORTS_32BIT_KERNEL
169 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
170 select SYS_SUPPORTS_LITTLE_ENDIAN
171 select SYS_SUPPORTS_128HZ
172 select SYS_SUPPORTS_256HZ
173 select SYS_SUPPORTS_1024HZ
175 This enables support for DEC's MIPS based workstations. For details
176 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
177 DECstation porting pages on <http://decstation.unix-ag.org/>.
179 If you have one of the following DECstation Models you definitely
180 want to choose R4xx0 for the CPU Type:
187 otherwise choose R3000.
190 bool "Jazz family of machines"
193 select ARCH_MAY_HAVE_PC_FDC
196 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
197 select GENERIC_ISA_DMA
198 select HAVE_PCSPKR_PLATFORM
203 select SYS_HAS_CPU_R4X00
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
206 select SYS_SUPPORTS_100HZ
208 This a family of machines based on the MIPS R4030 chipset which was
209 used by several vendors to build RISC/os and Windows NT workstations.
210 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
211 Olivetti M700-10 workstations.
214 bool "Ingenic JZ4740 based machines"
215 select SYS_HAS_CPU_MIPS32_R1
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_LITTLE_ENDIAN
218 select SYS_SUPPORTS_ZBOOT_UART16550
219 select DMA_NONCOHERENT
222 select ARCH_REQUIRE_GPIOLIB
223 select SYS_HAS_EARLY_PRINTK
226 select GENERIC_IRQ_CHIP
229 bool "Lantiq based platforms"
230 select DMA_NONCOHERENT
234 select SYS_HAS_CPU_MIPS32_R1
235 select SYS_HAS_CPU_MIPS32_R2
236 select SYS_SUPPORTS_BIG_ENDIAN
237 select SYS_SUPPORTS_32BIT_KERNEL
238 select SYS_SUPPORTS_MULTITHREADING
239 select SYS_HAS_EARLY_PRINTK
240 select ARCH_REQUIRE_GPIOLIB
243 select HAVE_MACH_CLKDEV
248 bool "LASAT Networks platforms"
251 select DMA_NONCOHERENT
252 select SYS_HAS_EARLY_PRINTK
255 select PCI_GT64XXX_PCI0
257 select R5000_CPU_SCACHE
258 select SYS_HAS_CPU_R5000
259 select SYS_SUPPORTS_32BIT_KERNEL
260 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
261 select SYS_SUPPORTS_LITTLE_ENDIAN
264 bool "Loongson family of machines"
265 select SYS_SUPPORTS_ZBOOT
267 This enables the support of Loongson family of machines.
269 Loongson is a family of general-purpose MIPS-compatible CPUs.
270 developed at Institute of Computing Technology (ICT),
271 Chinese Academy of Sciences (CAS) in the People's Republic
272 of China. The chief architect is Professor Weiwu Hu.
274 config MACH_LOONGSON1
275 bool "Loongson 1 family of machines"
276 select SYS_SUPPORTS_ZBOOT
278 This enables support for the Loongson 1 based machines.
280 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
281 the ICT (Institute of Computing Technology) and the Chinese Academy
285 bool "MIPS Malta board"
286 select ARCH_MAY_HAVE_PC_FDC
291 select DMA_NONCOHERENT
292 select GENERIC_ISA_DMA
293 select HAVE_PCSPKR_PLATFORM
299 select MIPS_BOARDS_GEN
301 select MIPS_CPU_SCACHE
302 select PCI_GT64XXX_PCI0
305 select SYS_HAS_CPU_MIPS32_R1
306 select SYS_HAS_CPU_MIPS32_R2
307 select SYS_HAS_CPU_MIPS64_R1
308 select SYS_HAS_CPU_MIPS64_R2
309 select SYS_HAS_CPU_NEVADA
310 select SYS_HAS_CPU_RM7000
311 select SYS_HAS_EARLY_PRINTK
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_64BIT_KERNEL
314 select SYS_SUPPORTS_BIG_ENDIAN
315 select SYS_SUPPORTS_LITTLE_ENDIAN
316 select SYS_SUPPORTS_MIPS_CMP
317 select SYS_SUPPORTS_MULTITHREADING
318 select SYS_SUPPORTS_SMARTMIPS
319 select SYS_SUPPORTS_ZBOOT
321 This enables support for the MIPS Technologies Malta evaluation
325 bool 'MIPS simulator (MIPSsim)'
328 select DMA_NONCOHERENT
329 select SYS_HAS_EARLY_PRINTK
332 select SYS_HAS_CPU_MIPS32_R1
333 select SYS_HAS_CPU_MIPS32_R2
334 select SYS_HAS_EARLY_PRINTK
335 select SYS_SUPPORTS_32BIT_KERNEL
336 select SYS_SUPPORTS_BIG_ENDIAN
337 select SYS_SUPPORTS_MULTITHREADING
338 select SYS_SUPPORTS_LITTLE_ENDIAN
340 This option enables support for MIPS Technologies MIPSsim software
344 bool "NEC EMMA2RH Mark-eins board"
348 This enables support for the NEC Electronics Mark-eins boards.
351 bool "NEC VR4100 series based machines"
354 select SYS_HAS_CPU_VR41XX
355 select ARCH_REQUIRE_GPIOLIB
358 bool "NXP STB220 board"
361 Support for NXP Semiconductors STB220 Development Board.
368 Support for NXP Semiconductors STB225 Development Board.
371 bool "NXP PNX8550 based JBS board"
373 select SYS_SUPPORTS_LITTLE_ENDIAN
375 config PNX8550_STB810
376 bool "NXP PNX8550 based STB810 board"
378 select SYS_SUPPORTS_LITTLE_ENDIAN
381 bool "PMC-Sierra MSP chipsets"
382 depends on EXPERIMENTAL
385 select DMA_NONCOHERENT
387 select NO_EXCEPT_FILL
389 select SYS_HAS_CPU_MIPS32_R1
390 select SYS_HAS_CPU_MIPS32_R2
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_BIG_ENDIAN
395 select SERIAL_8250_CONSOLE
397 This adds support for the PMC-Sierra family of Multi-Service
398 Processor System-On-A-Chips. These parts include a number
399 of integrated peripherals, interfaces and DSPs in addition to
400 a variety of MIPS cores.
403 bool "PMC-Sierra Yosemite eval board"
412 select SYS_HAS_CPU_RM9000
413 select SYS_HAS_EARLY_PRINTK
414 select SYS_SUPPORTS_32BIT_KERNEL
415 select SYS_SUPPORTS_64BIT_KERNEL
416 select SYS_SUPPORTS_BIG_ENDIAN
417 select SYS_SUPPORTS_HIGHMEM
418 select SYS_SUPPORTS_SMP
420 Yosemite is an evaluation board for the RM9000x2 processor
421 manufactured by PMC-Sierra.
427 select CPU_MIPSR2_IRQ_VI
428 select CPU_MIPSR2_IRQ_EI
430 select DMA_NONCOHERENT
432 select SYS_HAS_EARLY_PRINTK
433 select SYS_HAS_CPU_MIPS32_R2
434 select SYS_SUPPORTS_32BIT_KERNEL
435 select SYS_SUPPORTS_BIG_ENDIAN
436 select SYS_SUPPORTS_HIGHMEM
437 select USB_OHCI_LITTLE_ENDIAN
439 This enables support for the Cisco PowerTV Platform.
442 bool "SGI IP22 (Indy/Indigo2)"
448 select DEFAULT_SGI_PARTITION
449 select DMA_NONCOHERENT
453 select IP22_CPU_SCACHE
455 select GENERIC_ISA_DMA_SUPPORT_BROKEN
457 select SGI_HAS_INDYDOG
463 select SYS_HAS_CPU_R4X00
464 select SYS_HAS_CPU_R5000
466 # Disable EARLY_PRINTK for now since it leads to overwritten prom
467 # memory during early boot on some machines.
469 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
470 # for a more details discussion
472 # select SYS_HAS_EARLY_PRINTK
473 select SYS_SUPPORTS_32BIT_KERNEL
474 select SYS_SUPPORTS_64BIT_KERNEL
475 select SYS_SUPPORTS_BIG_ENDIAN
477 This are the SGI Indy, Challenge S and Indigo2, as well as certain
478 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
479 that runs on these, say Y here.
482 bool "SGI IP27 (Origin200/2000)"
486 select DEFAULT_SGI_PARTITION
488 select SYS_HAS_EARLY_PRINTK
490 select NR_CPUS_DEFAULT_64
491 select SYS_HAS_CPU_R10000
492 select SYS_SUPPORTS_64BIT_KERNEL
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_NUMA
495 select SYS_SUPPORTS_SMP
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) (EXPERIMENTAL)"
503 depends on EXPERIMENTAL
509 select DEFAULT_SGI_PARTITION
510 select DMA_NONCOHERENT
511 select GENERIC_ISA_DMA_SUPPORT_BROKEN
517 select SGI_HAS_INDYDOG
523 select SYS_HAS_CPU_R10000
525 # Disable EARLY_PRINTK for now since it leads to overwritten prom
526 # memory during early boot on some machines.
528 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
529 # for a more details discussion
531 # select SYS_HAS_EARLY_PRINTK
532 select SYS_SUPPORTS_64BIT_KERNEL
533 select SYS_SUPPORTS_BIG_ENDIAN
535 This is the SGI Indigo2 with R10000 processor. To compile a Linux
536 kernel that runs on these, say Y here.
545 select DMA_NONCOHERENT
548 select R5000_CPU_SCACHE
549 select RM7000_CPU_SCACHE
550 select SYS_HAS_CPU_R5000
551 select SYS_HAS_CPU_R10000 if BROKEN
552 select SYS_HAS_CPU_RM7000
553 select SYS_HAS_CPU_NEVADA
554 select SYS_SUPPORTS_64BIT_KERNEL
555 select SYS_SUPPORTS_BIG_ENDIAN
557 If you want this kernel to run on SGI O2 workstation, say Y here.
560 bool "Sibyte BCM91120C-CRhine"
561 depends on EXPERIMENTAL
564 select SIBYTE_BCM1120
566 select SYS_HAS_CPU_SB1
567 select SYS_SUPPORTS_BIG_ENDIAN
568 select SYS_SUPPORTS_LITTLE_ENDIAN
571 bool "Sibyte BCM91120x-Carmel"
572 depends on EXPERIMENTAL
575 select SIBYTE_BCM1120
577 select SYS_HAS_CPU_SB1
578 select SYS_SUPPORTS_BIG_ENDIAN
579 select SYS_SUPPORTS_LITTLE_ENDIAN
582 bool "Sibyte BCM91125C-CRhone"
583 depends on EXPERIMENTAL
586 select SIBYTE_BCM1125
588 select SYS_HAS_CPU_SB1
589 select SYS_SUPPORTS_BIG_ENDIAN
590 select SYS_SUPPORTS_HIGHMEM
591 select SYS_SUPPORTS_LITTLE_ENDIAN
594 bool "Sibyte BCM91125E-Rhone"
595 depends on EXPERIMENTAL
598 select SIBYTE_BCM1125H
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_LITTLE_ENDIAN
605 bool "Sibyte BCM91250A-SWARM"
608 select HAVE_PATA_PLATFORM
609 select NR_CPUS_DEFAULT_2
612 select SYS_HAS_CPU_SB1
613 select SYS_SUPPORTS_BIG_ENDIAN
614 select SYS_SUPPORTS_HIGHMEM
615 select SYS_SUPPORTS_LITTLE_ENDIAN
616 select ZONE_DMA32 if 64BIT
618 config SIBYTE_LITTLESUR
619 bool "Sibyte BCM91250C2-LittleSur"
620 depends on EXPERIMENTAL
623 select HAVE_PATA_PLATFORM
624 select NR_CPUS_DEFAULT_2
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_HIGHMEM
630 select SYS_SUPPORTS_LITTLE_ENDIAN
632 config SIBYTE_SENTOSA
633 bool "Sibyte BCM91250E-Sentosa"
634 depends on EXPERIMENTAL
637 select NR_CPUS_DEFAULT_2
640 select SYS_HAS_CPU_SB1
641 select SYS_SUPPORTS_BIG_ENDIAN
642 select SYS_SUPPORTS_LITTLE_ENDIAN
645 bool "Sibyte BCM91480B-BigSur"
648 select NR_CPUS_DEFAULT_4
649 select SIBYTE_BCM1x80
651 select SYS_HAS_CPU_SB1
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_HIGHMEM
654 select SYS_SUPPORTS_LITTLE_ENDIAN
655 select ZONE_DMA32 if 64BIT
658 bool "SNI RM200/300/400"
659 select ARC if CPU_LITTLE_ENDIAN
660 select ARC32 if CPU_LITTLE_ENDIAN
661 select SNIPROM if CPU_BIG_ENDIAN
662 select ARCH_MAY_HAVE_PC_FDC
666 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
667 select DMA_NONCOHERENT
668 select GENERIC_ISA_DMA
669 select HAVE_PCSPKR_PLATFORM
676 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
677 select SYS_HAS_CPU_R4X00
678 select SYS_HAS_CPU_R5000
679 select SYS_HAS_CPU_R10000
680 select R5000_CPU_SCACHE
681 select SYS_HAS_EARLY_PRINTK
682 select SYS_SUPPORTS_32BIT_KERNEL
683 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_HIGHMEM
686 select SYS_SUPPORTS_LITTLE_ENDIAN
688 The SNI RM200/300/400 are MIPS-based machines manufactured by
689 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
690 Technology and now in turn merged with Fujitsu. Say Y here to
691 support this machine type.
694 bool "Toshiba TX39 series based machines"
697 bool "Toshiba TX49 series based machines"
699 config MIKROTIK_RB532
700 bool "Mikrotik RB532 boards"
703 select DMA_NONCOHERENT
706 select SYS_HAS_CPU_MIPS32_R1
707 select SYS_SUPPORTS_32BIT_KERNEL
708 select SYS_SUPPORTS_LITTLE_ENDIAN
711 select ARCH_REQUIRE_GPIOLIB
713 Support the Mikrotik(tm) RouterBoard 532 series,
714 based on the IDT RC32434 SoC.
717 bool "Wind River PPMC board"
722 select DMA_NONCOHERENT
724 select PCI_GT64XXX_PCI0
726 select SYS_HAS_CPU_MIPS32_R1
727 select SYS_HAS_CPU_MIPS32_R2
728 select SYS_HAS_CPU_MIPS64_R1
729 select SYS_HAS_CPU_NEVADA
730 select SYS_HAS_CPU_RM7000
731 select SYS_SUPPORTS_32BIT_KERNEL
732 select SYS_SUPPORTS_64BIT_KERNEL
733 select SYS_SUPPORTS_BIG_ENDIAN
734 select SYS_SUPPORTS_LITTLE_ENDIAN
736 This enables support for the Wind River MIPS32 4KC PPMC evaluation
737 board, which is based on GT64120 bridge chip.
739 config CAVIUM_OCTEON_SIMULATOR
740 bool "Cavium Networks Octeon Simulator"
742 select 64BIT_PHYS_ADDR
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select SYS_SUPPORTS_BIG_ENDIAN
746 select SYS_SUPPORTS_HOTPLUG_CPU
747 select SYS_HAS_CPU_CAVIUM_OCTEON
750 The Octeon simulator is software performance model of the Cavium
751 Octeon Processor. It supports simulating Octeon processors on x86
754 config CAVIUM_OCTEON_REFERENCE_BOARD
755 bool "Cavium Networks Octeon reference board"
757 select 64BIT_PHYS_ADDR
759 select SYS_SUPPORTS_64BIT_KERNEL
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_HOTPLUG_CPU
762 select SYS_HAS_EARLY_PRINTK
763 select SYS_HAS_CPU_CAVIUM_OCTEON
766 select ARCH_SUPPORTS_MSI
768 select USB_ARCH_HAS_OHCI
769 select USB_ARCH_HAS_EHCI
772 This option supports all of the Octeon reference boards from Cavium
773 Networks. It builds a kernel that dynamically determines the Octeon
774 CPU type and supports all known board reference implementations.
775 Some of the supported boards are:
782 Say Y here for most Octeon reference boards.
785 bool "Netlogic XLR/XLS based systems"
786 depends on EXPERIMENTAL
789 select SYS_HAS_CPU_XLR
790 select SYS_SUPPORTS_SMP
793 select SYS_SUPPORTS_32BIT_KERNEL
794 select SYS_SUPPORTS_64BIT_KERNEL
795 select 64BIT_PHYS_ADDR
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
799 select NR_CPUS_DEFAULT_32
803 select ARCH_SUPPORTS_MSI
804 select ZONE_DMA if 64BIT
806 select SYS_HAS_EARLY_PRINTK
807 select USB_ARCH_HAS_OHCI if USB_SUPPORT
808 select USB_ARCH_HAS_EHCI if USB_SUPPORT
810 Support for systems based on Netlogic XLR and XLS processors.
811 Say Y here if you have a XLR or XLS based board.
814 bool "Netlogic XLP based systems"
815 depends on EXPERIMENTAL
818 select SYS_HAS_CPU_XLP
819 select SYS_SUPPORTS_SMP
821 select SYS_SUPPORTS_32BIT_KERNEL
822 select SYS_SUPPORTS_64BIT_KERNEL
823 select 64BIT_PHYS_ADDR
824 select SYS_SUPPORTS_BIG_ENDIAN
825 select SYS_SUPPORTS_LITTLE_ENDIAN
826 select SYS_SUPPORTS_HIGHMEM
828 select NR_CPUS_DEFAULT_32
832 select ZONE_DMA if 64BIT
834 select SYS_HAS_EARLY_PRINTK
836 This board is based on Netlogic XLP Processor.
837 Say Y here if you have a XLP based board.
841 source "arch/mips/alchemy/Kconfig"
842 source "arch/mips/ath79/Kconfig"
843 source "arch/mips/bcm47xx/Kconfig"
844 source "arch/mips/bcm63xx/Kconfig"
845 source "arch/mips/jazz/Kconfig"
846 source "arch/mips/jz4740/Kconfig"
847 source "arch/mips/lantiq/Kconfig"
848 source "arch/mips/lasat/Kconfig"
849 source "arch/mips/pmc-sierra/Kconfig"
850 source "arch/mips/powertv/Kconfig"
851 source "arch/mips/sgi-ip27/Kconfig"
852 source "arch/mips/sibyte/Kconfig"
853 source "arch/mips/txx9/Kconfig"
854 source "arch/mips/vr41xx/Kconfig"
855 source "arch/mips/cavium-octeon/Kconfig"
856 source "arch/mips/loongson/Kconfig"
857 source "arch/mips/loongson1/Kconfig"
858 source "arch/mips/netlogic/Kconfig"
862 config RWSEM_GENERIC_SPINLOCK
866 config RWSEM_XCHGADD_ALGORITHM
869 config ARCH_HAS_ILOG2_U32
873 config ARCH_HAS_ILOG2_U64
877 config GENERIC_HWEIGHT
881 config GENERIC_CALIBRATE_DELAY
885 config SCHED_OMIT_FRAME_POINTER
890 # Select some configuration options automatically based on user selections.
895 config ARCH_MAY_HAVE_PC_FDC
944 select ARCH_REQUIRE_GPIOLIB
950 config ARCH_DMA_ADDR_T_64BIT
951 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
956 config DMA_NONCOHERENT
958 select NEED_DMA_MAP_STATE
960 config NEED_DMA_MAP_STATE
963 config SYS_HAS_EARLY_PRINTK
967 bool "Support for hot-pluggable CPUs"
968 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
970 Say Y here to allow turning CPUs off and on. CPUs can be
971 controlled through /sys/devices/system/cpu.
972 (Note: power management support will enable this option
973 automatically on SMP systems. )
974 Say N if you want to disable CPU hotplug.
976 config SYS_SUPPORTS_HOTPLUG_CPU
991 config MIPS_DISABLE_OBSOLETE_IDE
1003 config GENERIC_ISA_DMA
1005 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1008 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1010 select GENERIC_ISA_DMA
1018 config HOLES_IN_ZONE
1022 # Endianness selection. Sufficiently obscure so many users don't know what to
1023 # answer,so we try hard to limit the available choices. Also the use of a
1024 # choice statement should be more obvious to the user.
1027 prompt "Endianness selection"
1029 Some MIPS machines can be configured for either little or big endian
1030 byte order. These modes require different kernels and a different
1031 Linux distribution. In general there is one preferred byteorder for a
1032 particular system but some systems are just as commonly used in the
1033 one or the other endianness.
1035 config CPU_BIG_ENDIAN
1037 depends on SYS_SUPPORTS_BIG_ENDIAN
1039 config CPU_LITTLE_ENDIAN
1040 bool "Little endian"
1041 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1049 config SYS_SUPPORTS_APM_EMULATION
1052 config SYS_SUPPORTS_BIG_ENDIAN
1055 config SYS_SUPPORTS_LITTLE_ENDIAN
1058 config SYS_SUPPORTS_HUGETLBFS
1060 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1087 config MIPS_BOARDS_GEN
1090 config PCI_GT64XXX_PCI0
1093 config NO_EXCEPT_FILL
1098 select SERIAL_RM9000
1104 select DMA_NONCOHERENT
1106 select SWAP_IO_SPACE
1107 select SYS_HAS_CPU_R5500
1108 select SYS_SUPPORTS_32BIT_KERNEL
1109 select SYS_SUPPORTS_64BIT_KERNEL
1110 select SYS_SUPPORTS_BIG_ENDIAN
1117 select DMA_NONCOHERENT
1118 select SYS_HAS_CPU_MIPS32_R2
1119 select SYS_SUPPORTS_32BIT_KERNEL
1120 select SYS_SUPPORTS_LITTLE_ENDIAN
1121 select SYS_SUPPORTS_BIG_ENDIAN
1123 select CPU_MIPSR2_IRQ_VI
1135 select DMA_NONCOHERENT
1137 select SYS_HAS_CPU_MIPS32_R1
1138 select SYS_HAS_EARLY_PRINTK
1139 select SYS_SUPPORTS_32BIT_KERNEL
1142 config SWAP_IO_SPACE
1145 config SERIAL_RM9000
1148 config SGI_HAS_INDYDOG
1160 config SGI_HAS_ZILOG
1163 config SGI_HAS_I8042
1166 config DEFAULT_SGI_PARTITION
1178 config MIPS_L1_CACHE_SHIFT
1180 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1181 default "6" if MIPS_CPU_SCACHE
1182 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1185 config HAVE_STD_PC_SERIAL_PORT
1189 bool "ARC console support"
1190 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1194 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1199 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1208 menu "CPU selection"
1214 config CPU_LOONGSON2E
1216 depends on SYS_HAS_CPU_LOONGSON2E
1217 select CPU_LOONGSON2
1219 The Loongson 2E processor implements the MIPS III instruction set
1220 with many extensions.
1222 It has an internal FPGA northbridge, which is compatible to
1225 config CPU_LOONGSON2F
1227 depends on SYS_HAS_CPU_LOONGSON2F
1228 select CPU_LOONGSON2
1230 select ARCH_REQUIRE_GPIOLIB
1232 The Loongson 2F processor implements the MIPS III instruction set
1233 with many extensions.
1235 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1236 have a similar programming interface with FPGA northbridge used in
1239 config CPU_LOONGSON1B
1241 depends on SYS_HAS_CPU_LOONGSON1B
1242 select CPU_LOONGSON1
1244 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1245 release 2 instruction set.
1247 config CPU_MIPS32_R1
1248 bool "MIPS32 Release 1"
1249 depends on SYS_HAS_CPU_MIPS32_R1
1250 select CPU_HAS_PREFETCH
1251 select CPU_SUPPORTS_32BIT_KERNEL
1252 select CPU_SUPPORTS_HIGHMEM
1254 Choose this option to build a kernel for release 1 or later of the
1255 MIPS32 architecture. Most modern embedded systems with a 32-bit
1256 MIPS processor are based on a MIPS32 processor. If you know the
1257 specific type of processor in your system, choose those that one
1258 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1259 Release 2 of the MIPS32 architecture is available since several
1260 years so chances are you even have a MIPS32 Release 2 processor
1261 in which case you should choose CPU_MIPS32_R2 instead for better
1264 config CPU_MIPS32_R2
1265 bool "MIPS32 Release 2"
1266 depends on SYS_HAS_CPU_MIPS32_R2
1267 select CPU_HAS_PREFETCH
1268 select CPU_SUPPORTS_32BIT_KERNEL
1269 select CPU_SUPPORTS_HIGHMEM
1271 Choose this option to build a kernel for release 2 or later of the
1272 MIPS32 architecture. Most modern embedded systems with a 32-bit
1273 MIPS processor are based on a MIPS32 processor. If you know the
1274 specific type of processor in your system, choose those that one
1275 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1277 config CPU_MIPS64_R1
1278 bool "MIPS64 Release 1"
1279 depends on SYS_HAS_CPU_MIPS64_R1
1280 select CPU_HAS_PREFETCH
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_64BIT_KERNEL
1283 select CPU_SUPPORTS_HIGHMEM
1284 select CPU_SUPPORTS_HUGEPAGES
1286 Choose this option to build a kernel for release 1 or later of the
1287 MIPS64 architecture. Many modern embedded systems with a 64-bit
1288 MIPS processor are based on a MIPS64 processor. If you know the
1289 specific type of processor in your system, choose those that one
1290 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1291 Release 2 of the MIPS64 architecture is available since several
1292 years so chances are you even have a MIPS64 Release 2 processor
1293 in which case you should choose CPU_MIPS64_R2 instead for better
1296 config CPU_MIPS64_R2
1297 bool "MIPS64 Release 2"
1298 depends on SYS_HAS_CPU_MIPS64_R2
1299 select CPU_HAS_PREFETCH
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1302 select CPU_SUPPORTS_HIGHMEM
1303 select CPU_SUPPORTS_HUGEPAGES
1305 Choose this option to build a kernel for release 2 or later of the
1306 MIPS64 architecture. Many modern embedded systems with a 64-bit
1307 MIPS processor are based on a MIPS64 processor. If you know the
1308 specific type of processor in your system, choose those that one
1309 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1313 depends on SYS_HAS_CPU_R3000
1315 select CPU_SUPPORTS_32BIT_KERNEL
1316 select CPU_SUPPORTS_HIGHMEM
1318 Please make sure to pick the right CPU type. Linux/MIPS is not
1319 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1320 *not* work on R4000 machines and vice versa. However, since most
1321 of the supported machines have an R4000 (or similar) CPU, R4x00
1322 might be a safe bet. If the resulting kernel does not work,
1323 try to recompile with R3000.
1327 depends on SYS_HAS_CPU_TX39XX
1328 select CPU_SUPPORTS_32BIT_KERNEL
1332 depends on SYS_HAS_CPU_VR41XX
1333 select CPU_SUPPORTS_32BIT_KERNEL
1334 select CPU_SUPPORTS_64BIT_KERNEL
1336 The options selects support for the NEC VR4100 series of processors.
1337 Only choose this option if you have one of these processors as a
1338 kernel built with this option will not run on any other type of
1339 processor or vice versa.
1343 depends on SYS_HAS_CPU_R4300
1344 select CPU_SUPPORTS_32BIT_KERNEL
1345 select CPU_SUPPORTS_64BIT_KERNEL
1347 MIPS Technologies R4300-series processors.
1351 depends on SYS_HAS_CPU_R4X00
1352 select CPU_SUPPORTS_32BIT_KERNEL
1353 select CPU_SUPPORTS_64BIT_KERNEL
1355 MIPS Technologies R4000-series processors other than 4300, including
1356 the R4000, R4400, R4600, and 4700.
1360 depends on SYS_HAS_CPU_TX49XX
1361 select CPU_HAS_PREFETCH
1362 select CPU_SUPPORTS_32BIT_KERNEL
1363 select CPU_SUPPORTS_64BIT_KERNEL
1367 depends on SYS_HAS_CPU_R5000
1368 select CPU_SUPPORTS_32BIT_KERNEL
1369 select CPU_SUPPORTS_64BIT_KERNEL
1371 MIPS Technologies R5000-series processors other than the Nevada.
1375 depends on SYS_HAS_CPU_R5432
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_64BIT_KERNEL
1381 depends on SYS_HAS_CPU_R5500
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select CPU_SUPPORTS_HUGEPAGES
1386 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1391 depends on EXPERIMENTAL
1392 depends on SYS_HAS_CPU_R6000
1393 select CPU_SUPPORTS_32BIT_KERNEL
1395 MIPS Technologies R6000 and R6000A series processors. Note these
1396 processors are extremely rare and the support for them is incomplete.
1400 depends on SYS_HAS_CPU_NEVADA
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402 select CPU_SUPPORTS_64BIT_KERNEL
1404 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1408 depends on EXPERIMENTAL
1409 depends on SYS_HAS_CPU_R8000
1410 select CPU_HAS_PREFETCH
1411 select CPU_SUPPORTS_64BIT_KERNEL
1413 MIPS Technologies R8000 processors. Note these processors are
1414 uncommon and the support for them is incomplete.
1418 depends on SYS_HAS_CPU_R10000
1419 select CPU_HAS_PREFETCH
1420 select CPU_SUPPORTS_32BIT_KERNEL
1421 select CPU_SUPPORTS_64BIT_KERNEL
1422 select CPU_SUPPORTS_HIGHMEM
1424 MIPS Technologies R10000-series processors.
1428 depends on SYS_HAS_CPU_RM7000
1429 select CPU_HAS_PREFETCH
1430 select CPU_SUPPORTS_32BIT_KERNEL
1431 select CPU_SUPPORTS_64BIT_KERNEL
1432 select CPU_SUPPORTS_HIGHMEM
1436 depends on SYS_HAS_CPU_RM9000
1437 select CPU_HAS_PREFETCH
1438 select CPU_SUPPORTS_32BIT_KERNEL
1439 select CPU_SUPPORTS_64BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1441 select WEAK_ORDERING
1445 depends on SYS_HAS_CPU_SB1
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select CPU_SUPPORTS_64BIT_KERNEL
1448 select CPU_SUPPORTS_HIGHMEM
1449 select WEAK_ORDERING
1451 config CPU_CAVIUM_OCTEON
1452 bool "Cavium Octeon processor"
1453 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1454 select ARCH_SPARSEMEM_ENABLE
1455 select CPU_HAS_PREFETCH
1456 select CPU_SUPPORTS_64BIT_KERNEL
1457 select SYS_SUPPORTS_SMP
1458 select NR_CPUS_DEFAULT_16
1459 select WEAK_ORDERING
1460 select CPU_SUPPORTS_HIGHMEM
1461 select CPU_SUPPORTS_HUGEPAGES
1465 The Cavium Octeon processor is a highly integrated chip containing
1466 many ethernet hardware widgets for networking tasks. The processor
1467 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1468 Full details can be found at http://www.caviumnetworks.com.
1470 config CPU_BMIPS3300
1472 depends on SYS_HAS_CPU_BMIPS3300
1475 Broadcom BMIPS3300 processors.
1477 config CPU_BMIPS4350
1479 depends on SYS_HAS_CPU_BMIPS4350
1481 select SYS_SUPPORTS_SMP
1482 select SYS_SUPPORTS_HOTPLUG_CPU
1484 Broadcom BMIPS4350 ("VIPER") processors.
1486 config CPU_BMIPS4380
1488 depends on SYS_HAS_CPU_BMIPS4380
1490 select SYS_SUPPORTS_SMP
1491 select SYS_SUPPORTS_HOTPLUG_CPU
1493 Broadcom BMIPS4380 processors.
1495 config CPU_BMIPS5000
1497 depends on SYS_HAS_CPU_BMIPS5000
1499 select CPU_SUPPORTS_HIGHMEM
1500 select MIPS_CPU_SCACHE
1501 select SYS_SUPPORTS_SMP
1502 select SYS_SUPPORTS_HOTPLUG_CPU
1504 Broadcom BMIPS5000 processors.
1507 bool "Netlogic XLR SoC"
1508 depends on SYS_HAS_CPU_XLR
1509 select CPU_SUPPORTS_32BIT_KERNEL
1510 select CPU_SUPPORTS_64BIT_KERNEL
1511 select CPU_SUPPORTS_HIGHMEM
1512 select WEAK_ORDERING
1513 select WEAK_REORDERING_BEYOND_LLSC
1514 select CPU_SUPPORTS_HUGEPAGES
1516 Netlogic Microsystems XLR/XLS processors.
1519 bool "Netlogic XLP SoC"
1520 depends on SYS_HAS_CPU_XLP
1521 select CPU_SUPPORTS_32BIT_KERNEL
1522 select CPU_SUPPORTS_64BIT_KERNEL
1523 select CPU_SUPPORTS_HIGHMEM
1525 select WEAK_ORDERING
1526 select WEAK_REORDERING_BEYOND_LLSC
1527 select CPU_HAS_PREFETCH
1529 Netlogic Microsystems XLP processors.
1533 config CPU_NOP_WORKAROUNDS
1536 config CPU_JUMP_WORKAROUNDS
1539 config CPU_LOONGSON2F_WORKAROUNDS
1540 bool "Loongson 2F Workarounds"
1542 select CPU_NOP_WORKAROUNDS
1543 select CPU_JUMP_WORKAROUNDS
1545 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1546 require workarounds. Without workarounds the system may hang
1547 unexpectedly. For more information please refer to the gas
1548 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1550 Loongson 2F03 and later have fixed these issues and no workarounds
1551 are needed. The workarounds have no significant side effect on them
1552 but may decrease the performance of the system so this option should
1553 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1556 If unsure, please say Y.
1557 endif # CPU_LOONGSON2F
1559 config SYS_SUPPORTS_ZBOOT
1561 select HAVE_KERNEL_GZIP
1562 select HAVE_KERNEL_BZIP2
1563 select HAVE_KERNEL_LZMA
1564 select HAVE_KERNEL_LZO
1566 config SYS_SUPPORTS_ZBOOT_UART16550
1568 select SYS_SUPPORTS_ZBOOT
1570 config CPU_LOONGSON2
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_SUPPORTS_HIGHMEM
1576 config CPU_LOONGSON1
1580 select CPU_HAS_PREFETCH
1581 select CPU_SUPPORTS_32BIT_KERNEL
1582 select CPU_SUPPORTS_HIGHMEM
1587 select CPU_SUPPORTS_32BIT_KERNEL
1588 select DMA_NONCOHERENT
1590 select SWAP_IO_SPACE
1591 select WEAK_ORDERING
1593 config SYS_HAS_CPU_LOONGSON2E
1596 config SYS_HAS_CPU_LOONGSON2F
1598 select CPU_SUPPORTS_CPUFREQ
1599 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1600 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1602 config SYS_HAS_CPU_LOONGSON1B
1605 config SYS_HAS_CPU_MIPS32_R1
1608 config SYS_HAS_CPU_MIPS32_R2
1611 config SYS_HAS_CPU_MIPS64_R1
1614 config SYS_HAS_CPU_MIPS64_R2
1617 config SYS_HAS_CPU_R3000
1620 config SYS_HAS_CPU_TX39XX
1623 config SYS_HAS_CPU_VR41XX
1626 config SYS_HAS_CPU_R4300
1629 config SYS_HAS_CPU_R4X00
1632 config SYS_HAS_CPU_TX49XX
1635 config SYS_HAS_CPU_R5000
1638 config SYS_HAS_CPU_R5432
1641 config SYS_HAS_CPU_R5500
1644 config SYS_HAS_CPU_R6000
1647 config SYS_HAS_CPU_NEVADA
1650 config SYS_HAS_CPU_R8000
1653 config SYS_HAS_CPU_R10000
1656 config SYS_HAS_CPU_RM7000
1659 config SYS_HAS_CPU_RM9000
1662 config SYS_HAS_CPU_SB1
1665 config SYS_HAS_CPU_CAVIUM_OCTEON
1668 config SYS_HAS_CPU_BMIPS3300
1671 config SYS_HAS_CPU_BMIPS4350
1674 config SYS_HAS_CPU_BMIPS4380
1677 config SYS_HAS_CPU_BMIPS5000
1680 config SYS_HAS_CPU_XLR
1683 config SYS_HAS_CPU_XLP
1687 # CPU may reorder R->R, R->W, W->R, W->W
1688 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1690 config WEAK_ORDERING
1694 # CPU may reorder reads and writes beyond LL/SC
1695 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1697 config WEAK_REORDERING_BEYOND_LLSC
1702 # These two indicate any level of the MIPS32 and MIPS64 architecture
1706 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1710 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1713 # These two indicate the revision of the architecture, either Release 1 or Release 2
1717 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1721 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1723 config SYS_SUPPORTS_32BIT_KERNEL
1725 config SYS_SUPPORTS_64BIT_KERNEL
1727 config CPU_SUPPORTS_32BIT_KERNEL
1729 config CPU_SUPPORTS_64BIT_KERNEL
1731 config CPU_SUPPORTS_CPUFREQ
1733 config CPU_SUPPORTS_ADDRWINCFG
1735 config CPU_SUPPORTS_HUGEPAGES
1737 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1739 config MIPS_PGD_C0_CONTEXT
1741 default y if 64BIT && CPU_MIPSR2
1744 # Set to y for ptrace access to watch registers.
1746 config HARDWARE_WATCHPOINTS
1748 default y if CPU_MIPSR1 || CPU_MIPSR2
1754 prompt "Kernel code model"
1756 You should only select this option if you have a workload that
1757 actually benefits from 64-bit processing or if your machine has
1758 large memory. You will only be presented a single option in this
1759 menu if your system does not support both 32-bit and 64-bit kernels.
1762 bool "32-bit kernel"
1763 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1766 Select this option if you want to build a 32-bit kernel.
1768 bool "64-bit kernel"
1769 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1770 select HAVE_SYSCALL_WRAPPERS
1772 Select this option if you want to build a 64-bit kernel.
1777 prompt "Kernel page size"
1778 default PAGE_SIZE_4KB
1780 config PAGE_SIZE_4KB
1782 depends on !CPU_LOONGSON2
1784 This option select the standard 4kB Linux page size. On some
1785 R3000-family processors this is the only available page size. Using
1786 4kB page size will minimize memory consumption and is therefore
1787 recommended for low memory systems.
1789 config PAGE_SIZE_8KB
1791 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1793 Using 8kB page size will result in higher performance kernel at
1794 the price of higher memory consumption. This option is available
1795 only on R8000 and cnMIPS processors. Note that you will need a
1796 suitable Linux distribution to support this.
1798 config PAGE_SIZE_16KB
1800 depends on !CPU_R3000 && !CPU_TX39XX
1802 Using 16kB page size will result in higher performance kernel at
1803 the price of higher memory consumption. This option is available on
1804 all non-R3000 family processors. Note that you will need a suitable
1805 Linux distribution to support this.
1807 config PAGE_SIZE_32KB
1809 depends on CPU_CAVIUM_OCTEON
1811 Using 32kB page size will result in higher performance kernel at
1812 the price of higher memory consumption. This option is available
1813 only on cnMIPS cores. Note that you will need a suitable Linux
1814 distribution to support this.
1816 config PAGE_SIZE_64KB
1818 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1820 Using 64kB page size will result in higher performance kernel at
1821 the price of higher memory consumption. This option is available on
1822 all non-R3000 family processor. Not that at the time of this
1823 writing this option is still high experimental.
1827 config FORCE_MAX_ZONEORDER
1828 int "Maximum zone order"
1829 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1830 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1831 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1832 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1833 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1834 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1838 The kernel memory allocator divides physically contiguous memory
1839 blocks into "zones", where each zone is a power of two number of
1840 pages. This option selects the largest power of two that the kernel
1841 keeps in the memory allocator. If you need to allocate very large
1842 blocks of physically contiguous memory, then you may need to
1843 increase this value.
1845 This config option is actually maximum order plus one. For example,
1846 a value of 11 means that the largest free memory block is 2^10 pages.
1848 The page size is not necessarily 4KB. Keep this in mind
1849 when choosing a value for this option.
1854 config IP22_CPU_SCACHE
1859 # Support for a MIPS32 / MIPS64 style S-caches
1861 config MIPS_CPU_SCACHE
1865 config R5000_CPU_SCACHE
1869 config RM7000_CPU_SCACHE
1873 config SIBYTE_DMA_PAGEOPS
1874 bool "Use DMA to clear/copy pages"
1877 Instead of using the CPU to zero and copy pages, use a Data Mover
1878 channel. These DMA channels are otherwise unused by the standard
1879 SiByte Linux port. Seems to give a small performance benefit.
1881 config CPU_HAS_PREFETCH
1885 prompt "MIPS MT options"
1887 config MIPS_MT_DISABLED
1888 bool "Disable multithreading support."
1890 Use this option if your workload can't take advantage of
1891 MIPS hardware multithreading support. On systems that don't have
1892 the option of an MT-enabled processor this option will be the only
1893 option in this menu.
1896 bool "Use 1 TC on each available VPE for SMP"
1897 depends on SYS_SUPPORTS_MULTITHREADING
1898 select CPU_MIPSR2_IRQ_VI
1899 select CPU_MIPSR2_IRQ_EI
1901 select NR_CPUS_DEFAULT_2
1903 select SYS_SUPPORTS_SCHED_SMT if SMP
1904 select SYS_SUPPORTS_SMP
1907 This is a kernel model which is known a VSMP but lately has been
1908 marketesed into SMVP.
1909 Virtual SMP uses the processor's VPEs to implement virtual
1910 processors. In currently available configuration of the 34K processor
1911 this allows for a dual processor. Both processors will share the same
1912 primary caches; each will obtain the half of the TLB for it's own
1913 exclusive use. For a layman this model can be described as similar to
1914 what Intel calls Hyperthreading.
1916 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1919 bool "SMTC: Use all TCs on all VPEs for SMP"
1920 depends on CPU_MIPS32_R2
1921 #depends on CPU_MIPS64_R2 # once there is hardware ...
1922 depends on SYS_SUPPORTS_MULTITHREADING
1923 select CPU_MIPSR2_IRQ_VI
1924 select CPU_MIPSR2_IRQ_EI
1926 select NR_CPUS_DEFAULT_8
1928 select SYS_SUPPORTS_SMP
1931 This is a kernel model which is known a SMTC or lately has been
1932 marketesed into SMVP.
1933 is presenting the available TC's of the core as processors to Linux.
1934 On currently available 34K processors this means a Linux system will
1935 see up to 5 processors. The implementation of the SMTC kernel differs
1936 significantly from VSMP and cannot efficiently coexist in the same
1937 kernel binary so the choice between VSMP and SMTC is a compile time
1940 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1948 bool "SMT (multithreading) scheduler support"
1949 depends on SYS_SUPPORTS_SCHED_SMT
1952 SMT scheduler support improves the CPU scheduler's decision making
1953 when dealing with MIPS MT enabled cores at a cost of slightly
1954 increased overhead in some places. If unsure say N here.
1956 config SYS_SUPPORTS_SCHED_SMT
1960 config SYS_SUPPORTS_MULTITHREADING
1963 config MIPS_MT_FPAFF
1964 bool "Dynamic FPU affinity for FP-intensive threads"
1966 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1968 config MIPS_VPE_LOADER
1969 bool "VPE loader support."
1970 depends on SYS_SUPPORTS_MULTITHREADING
1971 select CPU_MIPSR2_IRQ_VI
1972 select CPU_MIPSR2_IRQ_EI
1975 Includes a loader for loading an elf relocatable object
1976 onto another VPE and running it.
1978 config MIPS_MT_SMTC_IM_BACKSTOP
1979 bool "Use per-TC register bits as backstop for inhibited IM bits"
1980 depends on MIPS_MT_SMTC
1983 To support multiple TC microthreads acting as "CPUs" within
1984 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1985 during interrupt handling. To support legacy drivers and interrupt
1986 controller management code, SMTC has a "backstop" to track and
1987 if necessary restore the interrupt mask. This has some performance
1988 impact on interrupt service overhead.
1990 config MIPS_MT_SMTC_IRQAFF
1991 bool "Support IRQ affinity API"
1992 depends on MIPS_MT_SMTC
1995 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1996 for SMTC Linux kernel. Requires platform support, of which
1997 an example can be found in the MIPS kernel i8259 and Malta
1998 platform code. Adds some overhead to interrupt dispatch, and
1999 should be used only if you know what you are doing.
2001 config MIPS_VPE_LOADER_TOM
2002 bool "Load VPE program into memory hidden from linux"
2003 depends on MIPS_VPE_LOADER
2006 The loader can use memory that is present but has been hidden from
2007 Linux using the kernel command line option "mem=xxMB". It's up to
2008 you to ensure the amount you put in the option and the space your
2009 program requires is less or equal to the amount physically present.
2011 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2012 config MIPS_VPE_APSP_API
2013 bool "Enable support for AP/SP API (RTLX)"
2014 depends on MIPS_VPE_LOADER
2017 config MIPS_APSP_KSPD
2019 depends on MIPS_VPE_APSP_API
2022 KSPD is a kernel daemon that accepts syscall requests from the SP
2023 side, actions them and returns the results. It also handles the
2024 "exit" syscall notifying other kernel modules the SP program is
2025 exiting. You probably want to say yes here.
2028 bool "MIPS CMP framework support"
2029 depends on SYS_SUPPORTS_MIPS_CMP
2031 select SYS_SUPPORTS_SMP
2032 select SYS_SUPPORTS_SCHED_SMT if SMP
2033 select WEAK_ORDERING
2036 This is a placeholder option for the GCMP work. It will need to
2037 be handled differently...
2039 config SB1_PASS_1_WORKAROUNDS
2041 depends on CPU_SB1_PASS_1
2044 config SB1_PASS_2_WORKAROUNDS
2046 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2049 config SB1_PASS_2_1_WORKAROUNDS
2051 depends on CPU_SB1 && CPU_SB1_PASS_2
2054 config 64BIT_PHYS_ADDR
2057 config ARCH_PHYS_ADDR_T_64BIT
2058 def_bool 64BIT_PHYS_ADDR
2060 config CPU_HAS_SMARTMIPS
2061 depends on SYS_SUPPORTS_SMARTMIPS
2062 bool "Support for the SmartMIPS ASE"
2064 SmartMIPS is a extension of the MIPS32 architecture aimed at
2065 increased security at both hardware and software level for
2066 smartcards. Enabling this option will allow proper use of the
2067 SmartMIPS instructions by Linux applications. However a kernel with
2068 this option will not work on a MIPS core without SmartMIPS core. If
2069 you don't know you probably don't have SmartMIPS and should say N
2079 # Vectored interrupt mode is an R2 feature
2081 config CPU_MIPSR2_IRQ_VI
2085 # Extended interrupt mode is an R2 feature
2087 config CPU_MIPSR2_IRQ_EI
2092 depends on !CPU_R3000
2098 config CPU_DADDI_WORKAROUNDS
2101 config CPU_R4000_WORKAROUNDS
2103 select CPU_R4400_WORKAROUNDS
2105 config CPU_R4400_WORKAROUNDS
2109 # - Highmem only makes sense for the 32-bit kernel.
2110 # - The current highmem code will only work properly on physically indexed
2111 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2112 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2113 # moment we protect the user and offer the highmem option only on machines
2114 # where it's known to be safe. This will not offer highmem on a few systems
2115 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2116 # indexed CPUs but we're playing safe.
2117 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2118 # know they might have memory configurations that could make use of highmem
2122 bool "High Memory Support"
2123 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2125 config CPU_SUPPORTS_HIGHMEM
2128 config SYS_SUPPORTS_HIGHMEM
2131 config SYS_SUPPORTS_SMARTMIPS
2134 config ARCH_FLATMEM_ENABLE
2136 depends on !NUMA && !CPU_LOONGSON2
2138 config ARCH_DISCONTIGMEM_ENABLE
2140 default y if SGI_IP27
2142 Say Y to support efficient handling of discontiguous physical memory,
2143 for architectures which are either NUMA (Non-Uniform Memory Access)
2144 or have huge holes in the physical address space for other reasons.
2145 See <file:Documentation/vm/numa> for more.
2147 config ARCH_SPARSEMEM_ENABLE
2149 select SPARSEMEM_STATIC
2153 depends on SYS_SUPPORTS_NUMA
2155 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2156 Access). This option improves performance on systems with more
2157 than two nodes; on two node systems it is generally better to
2158 leave it disabled; on single node systems disable this option
2161 config SYS_SUPPORTS_NUMA
2167 depends on NEED_MULTIPLE_NODES
2169 config HW_PERF_EVENTS
2170 bool "Enable hardware performance counter support for perf events"
2171 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2174 Enable hardware performance counter support for perf events. If
2175 disabled, perf events will use software events only.
2180 bool "Multi-Processing support"
2181 depends on SYS_SUPPORTS_SMP
2183 select USE_GENERIC_SMP_HELPERS
2185 This enables support for systems with more than one CPU. If you have
2186 a system with only one CPU, like most personal computers, say N. If
2187 you have a system with more than one CPU, say Y.
2189 If you say N here, the kernel will run on single and multiprocessor
2190 machines, but will use only one CPU of a multiprocessor machine. If
2191 you say Y here, the kernel will run on many, but not all,
2192 singleprocessor machines. On a singleprocessor machine, the kernel
2193 will run faster if you say N here.
2195 People using multiprocessor machines who say Y here should also say
2196 Y to "Enhanced Real Time Clock Support", below.
2198 See also the SMP-HOWTO available at
2199 <http://www.tldp.org/docs.html#howto>.
2201 If you don't know what to do here, say N.
2206 config SYS_SUPPORTS_MIPS_CMP
2209 config SYS_SUPPORTS_SMP
2212 config NR_CPUS_DEFAULT_1
2215 config NR_CPUS_DEFAULT_2
2218 config NR_CPUS_DEFAULT_4
2221 config NR_CPUS_DEFAULT_8
2224 config NR_CPUS_DEFAULT_16
2227 config NR_CPUS_DEFAULT_32
2230 config NR_CPUS_DEFAULT_64
2234 int "Maximum number of CPUs (2-64)"
2235 range 1 64 if NR_CPUS_DEFAULT_1
2237 default "1" if NR_CPUS_DEFAULT_1
2238 default "2" if NR_CPUS_DEFAULT_2
2239 default "4" if NR_CPUS_DEFAULT_4
2240 default "8" if NR_CPUS_DEFAULT_8
2241 default "16" if NR_CPUS_DEFAULT_16
2242 default "32" if NR_CPUS_DEFAULT_32
2243 default "64" if NR_CPUS_DEFAULT_64
2245 This allows you to specify the maximum number of CPUs which this
2246 kernel will support. The maximum supported value is 32 for 32-bit
2247 kernel and 64 for 64-bit kernels; the minimum value which makes
2248 sense is 1 for Qemu (useful only for kernel debugging purposes)
2249 and 2 for all others.
2251 This is purely to save memory - each supported CPU adds
2252 approximately eight kilobytes to the kernel image. For best
2253 performance should round up your number of processors to the next
2257 # Timer Interrupt Frequency Configuration
2261 prompt "Timer frequency"
2264 Allows the configuration of the timer frequency.
2267 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2270 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2273 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2276 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2279 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2282 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2285 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2289 config SYS_SUPPORTS_48HZ
2292 config SYS_SUPPORTS_100HZ
2295 config SYS_SUPPORTS_128HZ
2298 config SYS_SUPPORTS_250HZ
2301 config SYS_SUPPORTS_256HZ
2304 config SYS_SUPPORTS_1000HZ
2307 config SYS_SUPPORTS_1024HZ
2310 config SYS_SUPPORTS_ARBIT_HZ
2312 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2313 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2314 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2315 !SYS_SUPPORTS_1024HZ
2320 default 100 if HZ_100
2321 default 128 if HZ_128
2322 default 250 if HZ_250
2323 default 256 if HZ_256
2324 default 1000 if HZ_1000
2325 default 1024 if HZ_1024
2327 source "kernel/Kconfig.preempt"
2330 bool "Kexec system call (EXPERIMENTAL)"
2331 depends on EXPERIMENTAL
2333 kexec is a system call that implements the ability to shutdown your
2334 current kernel, and to start another kernel. It is like a reboot
2335 but it is independent of the system firmware. And like a reboot
2336 you can start any kernel with it, not just Linux.
2338 The name comes from the similarity to the exec system call.
2340 It is an ongoing process to be certain the hardware in a machine
2341 is properly shutdown, so do not be surprised if this code does not
2342 initially work for you. It may help to enable device hotplugging
2343 support. As of this writing the exact hardware interface is
2344 strongly in flux, so no good recommendation can be made.
2347 bool "Enable seccomp to safely compute untrusted bytecode"
2351 This kernel feature is useful for number crunching applications
2352 that may need to compute untrusted bytecode during their
2353 execution. By using pipes or other transports made available to
2354 the process as file descriptors supporting the read/write
2355 syscalls, it's possible to isolate those applications in
2356 their own address space using seccomp. Once seccomp is
2357 enabled via /proc/<pid>/seccomp, it cannot be disabled
2358 and the task is only allowed to execute a few safe syscalls
2359 defined by each seccomp mode.
2361 If unsure, say Y. Only embedded should say N here.
2364 bool "Flattened Device Tree support"
2366 select OF_EARLY_FLATTREE
2369 Include support for flattened device tree machine descriptions.
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 GENERIC_PCI_IOMAP
2397 select NO_GENERIC_PCI_IOPORT_MAP
2399 Find out whether you have a PCI motherboard. PCI is the name of a
2400 bus system, i.e. the way the CPU talks to the other stuff inside
2401 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2407 source "drivers/pci/Kconfig"
2409 source "drivers/pci/pcie/Kconfig"
2412 # ISA support is now enabled via select. Too many systems still have the one
2413 # or other ISA chip on the board that users don't know about so don't expect
2414 # users to choose the right thing ...
2421 depends on HW_HAS_EISA
2423 select GENERIC_ISA_DMA
2425 The Extended Industry Standard Architecture (EISA) bus was
2426 developed as an open alternative to the IBM MicroChannel bus.
2428 The EISA bus provided some of the features of the IBM MicroChannel
2429 bus while maintaining backward compatibility with cards made for
2430 the older ISA bus. The EISA bus saw limited use between 1988 and
2431 1995 when it was made obsolete by the PCI bus.
2433 Say Y here if you are building a kernel for an EISA-based machine.
2437 source "drivers/eisa/Kconfig"
2440 bool "TURBOchannel support"
2441 depends on MACH_DECSTATION
2443 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2444 processors. TURBOchannel programming specifications are available
2446 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2448 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2449 Linux driver support status is documented at:
2450 <http://www.linux-mips.org/wiki/DECstation>
2460 select MIPS_EXTERNAL_TIMER
2465 source "drivers/pcmcia/Kconfig"
2467 source "drivers/pci/hotplug/Kconfig"
2470 bool "RapidIO support"
2474 If you say Y here, the kernel will include drivers and
2475 infrastructure code to support RapidIO interconnect devices.
2477 source "drivers/rapidio/Kconfig"
2481 menu "Executable file formats"
2483 source "fs/Kconfig.binfmt"
2488 config MIPS32_COMPAT
2489 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2492 Select this option if you want Linux/MIPS 32-bit binary
2493 compatibility. Since all software available for Linux/MIPS is
2494 currently 32-bit you should say Y here.
2498 depends on MIPS32_COMPAT
2499 select ARCH_WANT_OLD_COMPAT_IPC
2502 config SYSVIPC_COMPAT
2504 depends on COMPAT && SYSVIPC
2508 bool "Kernel support for o32 binaries"
2509 depends on MIPS32_COMPAT
2511 Select this option if you want to run o32 binaries. These are pure
2512 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2513 existing binaries are in this format.
2518 bool "Kernel support for n32 binaries"
2519 depends on MIPS32_COMPAT
2521 Select this option if you want to run n32 binaries. These are
2522 64-bit binaries using 32-bit quantities for addressing and certain
2523 data that would normally be 64-bit. They are used in special
2530 default y if MIPS32_O32 || MIPS32_N32
2534 menu "Power management options"
2536 config ARCH_HIBERNATION_POSSIBLE
2538 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2540 config ARCH_SUSPEND_POSSIBLE
2542 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2544 source "kernel/power/Kconfig"
2548 source "arch/mips/kernel/cpufreq/Kconfig"
2550 source "net/Kconfig"
2552 source "drivers/Kconfig"
2556 source "arch/mips/Kconfig.debug"
2558 source "security/Kconfig"
2560 source "crypto/Kconfig"
2562 source "lib/Kconfig"