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 ARCH_BINFMT_ELF_RANDOMIZE_PIE
21 select RTC_LIB if !MACH_LOONGSON
22 select GENERIC_ATOMIC64 if !64BIT
24 select HAVE_DMA_API_DEBUG
25 select HAVE_GENERIC_HARDIRQS
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select HAVE_ARCH_JUMP_LABEL
29 select IRQ_FORCED_THREADING
31 select HAVE_MEMBLOCK_NODE_MAP
32 select ARCH_DISCARD_MEMBLOCK
33 select GENERIC_SMP_IDLE_THREAD
34 select BUILDTIME_EXTABLE_SORT
35 select GENERIC_CLOCKEVENTS
36 select GENERIC_CMOS_UPDATE
38 menu "Machine selection"
48 bool "Alchemy processor based machines"
49 select 64BIT_PHYS_ADDR
53 select SYS_HAS_CPU_MIPS32_R1
54 select SYS_SUPPORTS_32BIT_KERNEL
55 select SYS_SUPPORTS_APM_EMULATION
57 select ARCH_WANT_OPTIONAL_GPIOLIB
58 select SYS_SUPPORTS_ZBOOT
59 select USB_ARCH_HAS_OHCI
60 select USB_ARCH_HAS_EHCI
63 bool "Texas Instruments AR7"
65 select DMA_NONCOHERENT
71 select SYS_HAS_CPU_MIPS32_R1
72 select SYS_HAS_EARLY_PRINTK
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_LITTLE_ENDIAN
75 select SYS_SUPPORTS_ZBOOT_UART16550
76 select ARCH_REQUIRE_GPIOLIB
79 Support for the Texas Instruments AR7 System-on-a-Chip
80 family: TNETD7100, 7200 and 7300.
83 bool "Atheros AR71XX/AR724X/AR913X based boards"
84 select ARCH_REQUIRE_GPIOLIB
88 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_MIPS32_R2
92 select SYS_HAS_EARLY_PRINTK
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_BIG_ENDIAN
96 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
99 bool "Broadcom BCM47XX based boards"
102 select DMA_NONCOHERENT
105 select SYS_SUPPORTS_32BIT_KERNEL
106 select SYS_SUPPORTS_LITTLE_ENDIAN
108 select SYS_HAS_EARLY_PRINTK
111 Support for BCM47XX based boards
114 bool "Broadcom BCM63XX based boards"
117 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_MIPS32_R1
120 select SYS_SUPPORTS_32BIT_KERNEL
121 select SYS_SUPPORTS_BIG_ENDIAN
122 select SYS_HAS_EARLY_PRINTK
124 select ARCH_REQUIRE_GPIOLIB
126 Support for BCM63XX based boards
133 select DMA_NONCOHERENT
139 select PCI_GT64XXX_PCI0
141 select SYS_HAS_CPU_NEVADA
142 select SYS_HAS_EARLY_PRINTK
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_64BIT_KERNEL
145 select SYS_SUPPORTS_LITTLE_ENDIAN
147 config MACH_DECSTATION
154 select CPU_DADDI_WORKAROUNDS if 64BIT
155 select CPU_R4000_WORKAROUNDS if 64BIT
156 select CPU_R4400_WORKAROUNDS if 64BIT
157 select DMA_NONCOHERENT
160 select SYS_HAS_CPU_R3000
161 select SYS_HAS_CPU_R4X00
162 select SYS_SUPPORTS_32BIT_KERNEL
163 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
164 select SYS_SUPPORTS_LITTLE_ENDIAN
165 select SYS_SUPPORTS_128HZ
166 select SYS_SUPPORTS_256HZ
167 select SYS_SUPPORTS_1024HZ
169 This enables support for DEC's MIPS based workstations. For details
170 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
171 DECstation porting pages on <http://decstation.unix-ag.org/>.
173 If you have one of the following DECstation Models you definitely
174 want to choose R4xx0 for the CPU Type:
181 otherwise choose R3000.
184 bool "Jazz family of machines"
187 select ARCH_MAY_HAVE_PC_FDC
190 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
191 select GENERIC_ISA_DMA
192 select HAVE_PCSPKR_PLATFORM
197 select SYS_HAS_CPU_R4X00
198 select SYS_SUPPORTS_32BIT_KERNEL
199 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
200 select SYS_SUPPORTS_100HZ
202 This a family of machines based on the MIPS R4030 chipset which was
203 used by several vendors to build RISC/os and Windows NT workstations.
204 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
205 Olivetti M700-10 workstations.
208 bool "Ingenic JZ4740 based machines"
209 select SYS_HAS_CPU_MIPS32_R1
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_LITTLE_ENDIAN
212 select DMA_NONCOHERENT
215 select ARCH_REQUIRE_GPIOLIB
216 select SYS_HAS_EARLY_PRINTK
219 select GENERIC_IRQ_CHIP
222 bool "Lantiq based platforms"
223 select DMA_NONCOHERENT
227 select SYS_HAS_CPU_MIPS32_R1
228 select SYS_HAS_CPU_MIPS32_R2
229 select SYS_SUPPORTS_BIG_ENDIAN
230 select SYS_SUPPORTS_32BIT_KERNEL
231 select SYS_SUPPORTS_MULTITHREADING
232 select SYS_HAS_EARLY_PRINTK
233 select ARCH_REQUIRE_GPIOLIB
236 select HAVE_MACH_CLKDEV
241 bool "LASAT Networks platforms"
244 select DMA_NONCOHERENT
245 select SYS_HAS_EARLY_PRINTK
248 select PCI_GT64XXX_PCI0
250 select R5000_CPU_SCACHE
251 select SYS_HAS_CPU_R5000
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
254 select SYS_SUPPORTS_LITTLE_ENDIAN
257 bool "Loongson family of machines"
258 select SYS_SUPPORTS_ZBOOT
260 This enables the support of Loongson family of machines.
262 Loongson is a family of general-purpose MIPS-compatible CPUs.
263 developed at Institute of Computing Technology (ICT),
264 Chinese Academy of Sciences (CAS) in the People's Republic
265 of China. The chief architect is Professor Weiwu Hu.
268 bool "MIPS Malta board"
269 select ARCH_MAY_HAVE_PC_FDC
274 select DMA_NONCOHERENT
275 select GENERIC_ISA_DMA
276 select HAVE_PCSPKR_PLATFORM
282 select MIPS_BOARDS_GEN
284 select MIPS_CPU_SCACHE
285 select PCI_GT64XXX_PCI0
288 select SYS_HAS_CPU_MIPS32_R1
289 select SYS_HAS_CPU_MIPS32_R2
290 select SYS_HAS_CPU_MIPS64_R1
291 select SYS_HAS_CPU_NEVADA
292 select SYS_HAS_CPU_RM7000
293 select SYS_HAS_EARLY_PRINTK
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
297 select SYS_SUPPORTS_LITTLE_ENDIAN
298 select SYS_SUPPORTS_MIPS_CMP
299 select SYS_SUPPORTS_MULTITHREADING
300 select SYS_SUPPORTS_SMARTMIPS
301 select SYS_SUPPORTS_ZBOOT
303 This enables support for the MIPS Technologies Malta evaluation
307 bool 'MIPS simulator (MIPSsim)'
310 select DMA_NONCOHERENT
311 select SYS_HAS_EARLY_PRINTK
314 select SYS_HAS_CPU_MIPS32_R1
315 select SYS_HAS_CPU_MIPS32_R2
316 select SYS_HAS_EARLY_PRINTK
317 select SYS_SUPPORTS_32BIT_KERNEL
318 select SYS_SUPPORTS_BIG_ENDIAN
319 select SYS_SUPPORTS_MULTITHREADING
320 select SYS_SUPPORTS_LITTLE_ENDIAN
322 This option enables support for MIPS Technologies MIPSsim software
326 bool "NEC EMMA2RH Mark-eins board"
330 This enables support for the NEC Electronics Mark-eins boards.
333 bool "NEC VR4100 series based machines"
336 select SYS_HAS_CPU_VR41XX
337 select ARCH_REQUIRE_GPIOLIB
340 bool "NXP STB220 board"
343 Support for NXP Semiconductors STB220 Development Board.
350 Support for NXP Semiconductors STB225 Development Board.
353 bool "NXP PNX8550 based JBS board"
355 select SYS_SUPPORTS_LITTLE_ENDIAN
357 config PNX8550_STB810
358 bool "NXP PNX8550 based STB810 board"
360 select SYS_SUPPORTS_LITTLE_ENDIAN
363 bool "PMC-Sierra MSP chipsets"
364 depends on EXPERIMENTAL
367 select DMA_NONCOHERENT
369 select NO_EXCEPT_FILL
371 select SYS_HAS_CPU_MIPS32_R1
372 select SYS_HAS_CPU_MIPS32_R2
373 select SYS_SUPPORTS_32BIT_KERNEL
374 select SYS_SUPPORTS_BIG_ENDIAN
377 select SERIAL_8250_CONSOLE
379 This adds support for the PMC-Sierra family of Multi-Service
380 Processor System-On-A-Chips. These parts include a number
381 of integrated peripherals, interfaces and DSPs in addition to
382 a variety of MIPS cores.
385 bool "PMC-Sierra Yosemite eval board"
394 select SYS_HAS_CPU_RM9000
395 select SYS_HAS_EARLY_PRINTK
396 select SYS_SUPPORTS_32BIT_KERNEL
397 select SYS_SUPPORTS_64BIT_KERNEL
398 select SYS_SUPPORTS_BIG_ENDIAN
399 select SYS_SUPPORTS_HIGHMEM
400 select SYS_SUPPORTS_SMP
402 Yosemite is an evaluation board for the RM9000x2 processor
403 manufactured by PMC-Sierra.
409 select CPU_MIPSR2_IRQ_VI
410 select CPU_MIPSR2_IRQ_EI
412 select DMA_NONCOHERENT
414 select SYS_HAS_EARLY_PRINTK
415 select SYS_HAS_CPU_MIPS32_R2
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_BIG_ENDIAN
418 select SYS_SUPPORTS_HIGHMEM
419 select USB_OHCI_LITTLE_ENDIAN
421 This enables support for the Cisco PowerTV Platform.
424 bool "SGI IP22 (Indy/Indigo2)"
430 select DEFAULT_SGI_PARTITION
431 select DMA_NONCOHERENT
435 select IP22_CPU_SCACHE
437 select GENERIC_ISA_DMA_SUPPORT_BROKEN
439 select SGI_HAS_INDYDOG
445 select SYS_HAS_CPU_R4X00
446 select SYS_HAS_CPU_R5000
448 # Disable EARLY_PRINTK for now since it leads to overwritten prom
449 # memory during early boot on some machines.
451 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
452 # for a more details discussion
454 # select SYS_HAS_EARLY_PRINTK
455 select SYS_SUPPORTS_32BIT_KERNEL
456 select SYS_SUPPORTS_64BIT_KERNEL
457 select SYS_SUPPORTS_BIG_ENDIAN
459 This are the SGI Indy, Challenge S and Indigo2, as well as certain
460 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
461 that runs on these, say Y here.
464 bool "SGI IP27 (Origin200/2000)"
468 select DEFAULT_SGI_PARTITION
470 select SYS_HAS_EARLY_PRINTK
472 select NR_CPUS_DEFAULT_64
473 select SYS_HAS_CPU_R10000
474 select SYS_SUPPORTS_64BIT_KERNEL
475 select SYS_SUPPORTS_BIG_ENDIAN
476 select SYS_SUPPORTS_NUMA
477 select SYS_SUPPORTS_SMP
479 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
480 workstations. To compile a Linux kernel that runs on these, say Y
484 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
485 depends on EXPERIMENTAL
491 select DEFAULT_SGI_PARTITION
492 select DMA_NONCOHERENT
493 select GENERIC_ISA_DMA_SUPPORT_BROKEN
499 select SGI_HAS_INDYDOG
505 select SYS_HAS_CPU_R10000
507 # Disable EARLY_PRINTK for now since it leads to overwritten prom
508 # memory during early boot on some machines.
510 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
511 # for a more details discussion
513 # select SYS_HAS_EARLY_PRINTK
514 select SYS_SUPPORTS_64BIT_KERNEL
515 select SYS_SUPPORTS_BIG_ENDIAN
517 This is the SGI Indigo2 with R10000 processor. To compile a Linux
518 kernel that runs on these, say Y here.
527 select DMA_NONCOHERENT
530 select R5000_CPU_SCACHE
531 select RM7000_CPU_SCACHE
532 select SYS_HAS_CPU_R5000
533 select SYS_HAS_CPU_R10000 if BROKEN
534 select SYS_HAS_CPU_RM7000
535 select SYS_HAS_CPU_NEVADA
536 select SYS_SUPPORTS_64BIT_KERNEL
537 select SYS_SUPPORTS_BIG_ENDIAN
539 If you want this kernel to run on SGI O2 workstation, say Y here.
542 bool "Sibyte BCM91120C-CRhine"
543 depends on EXPERIMENTAL
546 select SIBYTE_BCM1120
548 select SYS_HAS_CPU_SB1
549 select SYS_SUPPORTS_BIG_ENDIAN
550 select SYS_SUPPORTS_LITTLE_ENDIAN
553 bool "Sibyte BCM91120x-Carmel"
554 depends on EXPERIMENTAL
557 select SIBYTE_BCM1120
559 select SYS_HAS_CPU_SB1
560 select SYS_SUPPORTS_BIG_ENDIAN
561 select SYS_SUPPORTS_LITTLE_ENDIAN
564 bool "Sibyte BCM91125C-CRhone"
565 depends on EXPERIMENTAL
568 select SIBYTE_BCM1125
570 select SYS_HAS_CPU_SB1
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_HIGHMEM
573 select SYS_SUPPORTS_LITTLE_ENDIAN
576 bool "Sibyte BCM91125E-Rhone"
577 depends on EXPERIMENTAL
580 select SIBYTE_BCM1125H
582 select SYS_HAS_CPU_SB1
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_LITTLE_ENDIAN
587 bool "Sibyte BCM91250A-SWARM"
590 select HAVE_PATA_PLATFORM
591 select NR_CPUS_DEFAULT_2
594 select SYS_HAS_CPU_SB1
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_HIGHMEM
597 select SYS_SUPPORTS_LITTLE_ENDIAN
598 select ZONE_DMA32 if 64BIT
600 config SIBYTE_LITTLESUR
601 bool "Sibyte BCM91250C2-LittleSur"
602 depends on EXPERIMENTAL
605 select HAVE_PATA_PLATFORM
606 select NR_CPUS_DEFAULT_2
609 select SYS_HAS_CPU_SB1
610 select SYS_SUPPORTS_BIG_ENDIAN
611 select SYS_SUPPORTS_HIGHMEM
612 select SYS_SUPPORTS_LITTLE_ENDIAN
614 config SIBYTE_SENTOSA
615 bool "Sibyte BCM91250E-Sentosa"
616 depends on EXPERIMENTAL
619 select NR_CPUS_DEFAULT_2
622 select SYS_HAS_CPU_SB1
623 select SYS_SUPPORTS_BIG_ENDIAN
624 select SYS_SUPPORTS_LITTLE_ENDIAN
627 bool "Sibyte BCM91480B-BigSur"
630 select NR_CPUS_DEFAULT_4
631 select SIBYTE_BCM1x80
633 select SYS_HAS_CPU_SB1
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_HIGHMEM
636 select SYS_SUPPORTS_LITTLE_ENDIAN
637 select ZONE_DMA32 if 64BIT
640 bool "SNI RM200/300/400"
641 select ARC if CPU_LITTLE_ENDIAN
642 select ARC32 if CPU_LITTLE_ENDIAN
643 select SNIPROM if CPU_BIG_ENDIAN
644 select ARCH_MAY_HAVE_PC_FDC
648 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
649 select DMA_NONCOHERENT
650 select GENERIC_ISA_DMA
651 select HAVE_PCSPKR_PLATFORM
658 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
659 select SYS_HAS_CPU_R4X00
660 select SYS_HAS_CPU_R5000
661 select SYS_HAS_CPU_R10000
662 select R5000_CPU_SCACHE
663 select SYS_HAS_EARLY_PRINTK
664 select SYS_SUPPORTS_32BIT_KERNEL
665 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
666 select SYS_SUPPORTS_BIG_ENDIAN
667 select SYS_SUPPORTS_HIGHMEM
668 select SYS_SUPPORTS_LITTLE_ENDIAN
670 The SNI RM200/300/400 are MIPS-based machines manufactured by
671 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
672 Technology and now in turn merged with Fujitsu. Say Y here to
673 support this machine type.
676 bool "Toshiba TX39 series based machines"
679 bool "Toshiba TX49 series based machines"
681 config MIKROTIK_RB532
682 bool "Mikrotik RB532 boards"
685 select DMA_NONCOHERENT
688 select SYS_HAS_CPU_MIPS32_R1
689 select SYS_SUPPORTS_32BIT_KERNEL
690 select SYS_SUPPORTS_LITTLE_ENDIAN
693 select ARCH_REQUIRE_GPIOLIB
695 Support the Mikrotik(tm) RouterBoard 532 series,
696 based on the IDT RC32434 SoC.
699 bool "Wind River PPMC board"
704 select DMA_NONCOHERENT
706 select PCI_GT64XXX_PCI0
708 select SYS_HAS_CPU_MIPS32_R1
709 select SYS_HAS_CPU_MIPS32_R2
710 select SYS_HAS_CPU_MIPS64_R1
711 select SYS_HAS_CPU_NEVADA
712 select SYS_HAS_CPU_RM7000
713 select SYS_SUPPORTS_32BIT_KERNEL
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_LITTLE_ENDIAN
718 This enables support for the Wind River MIPS32 4KC PPMC evaluation
719 board, which is based on GT64120 bridge chip.
721 config CAVIUM_OCTEON_SIMULATOR
722 bool "Cavium Networks Octeon Simulator"
724 select 64BIT_PHYS_ADDR
726 select SYS_SUPPORTS_64BIT_KERNEL
727 select SYS_SUPPORTS_BIG_ENDIAN
728 select SYS_SUPPORTS_HOTPLUG_CPU
729 select SYS_HAS_CPU_CAVIUM_OCTEON
732 The Octeon simulator is software performance model of the Cavium
733 Octeon Processor. It supports simulating Octeon processors on x86
736 config CAVIUM_OCTEON_REFERENCE_BOARD
737 bool "Cavium Networks Octeon reference board"
739 select 64BIT_PHYS_ADDR
741 select SYS_SUPPORTS_64BIT_KERNEL
742 select SYS_SUPPORTS_BIG_ENDIAN
743 select SYS_SUPPORTS_HOTPLUG_CPU
744 select SYS_HAS_EARLY_PRINTK
745 select SYS_HAS_CPU_CAVIUM_OCTEON
748 select ARCH_SUPPORTS_MSI
750 select USB_ARCH_HAS_OHCI
751 select USB_ARCH_HAS_EHCI
754 This option supports all of the Octeon reference boards from Cavium
755 Networks. It builds a kernel that dynamically determines the Octeon
756 CPU type and supports all known board reference implementations.
757 Some of the supported boards are:
764 Say Y here for most Octeon reference boards.
767 bool "Netlogic XLR/XLS based systems"
768 depends on EXPERIMENTAL
771 select SYS_HAS_CPU_XLR
772 select SYS_SUPPORTS_SMP
775 select SYS_SUPPORTS_32BIT_KERNEL
776 select SYS_SUPPORTS_64BIT_KERNEL
777 select 64BIT_PHYS_ADDR
778 select SYS_SUPPORTS_BIG_ENDIAN
779 select SYS_SUPPORTS_HIGHMEM
781 select NR_CPUS_DEFAULT_32
785 select ARCH_SUPPORTS_MSI
786 select ZONE_DMA if 64BIT
788 select SYS_HAS_EARLY_PRINTK
790 Support for systems based on Netlogic XLR and XLS processors.
791 Say Y here if you have a XLR or XLS based board.
794 bool "Netlogic XLP based systems"
795 depends on EXPERIMENTAL
798 select SYS_HAS_CPU_XLP
799 select SYS_SUPPORTS_SMP
802 select SYS_SUPPORTS_32BIT_KERNEL
803 select SYS_SUPPORTS_64BIT_KERNEL
804 select 64BIT_PHYS_ADDR
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_LITTLE_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
809 select NR_CPUS_DEFAULT_32
813 select ZONE_DMA if 64BIT
815 select SYS_HAS_EARLY_PRINTK
817 This board is based on Netlogic XLP Processor.
818 Say Y here if you have a XLP based board.
822 source "arch/mips/alchemy/Kconfig"
823 source "arch/mips/ath79/Kconfig"
824 source "arch/mips/bcm47xx/Kconfig"
825 source "arch/mips/bcm63xx/Kconfig"
826 source "arch/mips/jazz/Kconfig"
827 source "arch/mips/jz4740/Kconfig"
828 source "arch/mips/lantiq/Kconfig"
829 source "arch/mips/lasat/Kconfig"
830 source "arch/mips/pmc-sierra/Kconfig"
831 source "arch/mips/powertv/Kconfig"
832 source "arch/mips/sgi-ip27/Kconfig"
833 source "arch/mips/sibyte/Kconfig"
834 source "arch/mips/txx9/Kconfig"
835 source "arch/mips/vr41xx/Kconfig"
836 source "arch/mips/cavium-octeon/Kconfig"
837 source "arch/mips/loongson/Kconfig"
838 source "arch/mips/netlogic/Kconfig"
842 config RWSEM_GENERIC_SPINLOCK
846 config RWSEM_XCHGADD_ALGORITHM
849 config ARCH_HAS_ILOG2_U32
853 config ARCH_HAS_ILOG2_U64
857 config GENERIC_HWEIGHT
861 config GENERIC_CALIBRATE_DELAY
865 config SCHED_OMIT_FRAME_POINTER
870 # Select some configuration options automatically based on user selections.
875 config ARCH_MAY_HAVE_PC_FDC
924 select ARCH_REQUIRE_GPIOLIB
930 config ARCH_DMA_ADDR_T_64BIT
931 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
936 config DMA_NONCOHERENT
938 select NEED_DMA_MAP_STATE
940 config NEED_DMA_MAP_STATE
943 config SYS_HAS_EARLY_PRINTK
947 bool "Support for hot-pluggable CPUs"
948 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
950 Say Y here to allow turning CPUs off and on. CPUs can be
951 controlled through /sys/devices/system/cpu.
952 (Note: power management support will enable this option
953 automatically on SMP systems. )
954 Say N if you want to disable CPU hotplug.
956 config SYS_SUPPORTS_HOTPLUG_CPU
971 config MIPS_DISABLE_OBSOLETE_IDE
983 config GENERIC_ISA_DMA
985 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
988 config GENERIC_ISA_DMA_SUPPORT_BROKEN
990 select GENERIC_ISA_DMA
1002 # Endianness selection. Sufficiently obscure so many users don't know what to
1003 # answer,so we try hard to limit the available choices. Also the use of a
1004 # choice statement should be more obvious to the user.
1007 prompt "Endianness selection"
1009 Some MIPS machines can be configured for either little or big endian
1010 byte order. These modes require different kernels and a different
1011 Linux distribution. In general there is one preferred byteorder for a
1012 particular system but some systems are just as commonly used in the
1013 one or the other endianness.
1015 config CPU_BIG_ENDIAN
1017 depends on SYS_SUPPORTS_BIG_ENDIAN
1019 config CPU_LITTLE_ENDIAN
1020 bool "Little endian"
1021 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1029 config SYS_SUPPORTS_APM_EMULATION
1032 config SYS_SUPPORTS_BIG_ENDIAN
1035 config SYS_SUPPORTS_LITTLE_ENDIAN
1038 config SYS_SUPPORTS_HUGETLBFS
1040 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1067 config MIPS_BOARDS_GEN
1070 config PCI_GT64XXX_PCI0
1073 config NO_EXCEPT_FILL
1078 select SERIAL_RM9000
1084 select DMA_NONCOHERENT
1086 select SWAP_IO_SPACE
1087 select SYS_HAS_CPU_R5500
1088 select SYS_SUPPORTS_32BIT_KERNEL
1089 select SYS_SUPPORTS_64BIT_KERNEL
1090 select SYS_SUPPORTS_BIG_ENDIAN
1097 select DMA_NONCOHERENT
1098 select SYS_HAS_CPU_MIPS32_R2
1099 select SYS_SUPPORTS_32BIT_KERNEL
1100 select SYS_SUPPORTS_LITTLE_ENDIAN
1101 select SYS_SUPPORTS_BIG_ENDIAN
1103 select CPU_MIPSR2_IRQ_VI
1115 select DMA_NONCOHERENT
1117 select SYS_HAS_CPU_MIPS32_R1
1118 select SYS_HAS_EARLY_PRINTK
1119 select SYS_SUPPORTS_32BIT_KERNEL
1122 config SWAP_IO_SPACE
1125 config SERIAL_RM9000
1128 config SGI_HAS_INDYDOG
1140 config SGI_HAS_ZILOG
1143 config SGI_HAS_I8042
1146 config DEFAULT_SGI_PARTITION
1158 config MIPS_L1_CACHE_SHIFT
1160 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1161 default "6" if MIPS_CPU_SCACHE
1162 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1165 config HAVE_STD_PC_SERIAL_PORT
1169 bool "ARC console support"
1170 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1174 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1179 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1188 menu "CPU selection"
1194 config CPU_LOONGSON2E
1196 depends on SYS_HAS_CPU_LOONGSON2E
1197 select CPU_LOONGSON2
1199 The Loongson 2E processor implements the MIPS III instruction set
1200 with many extensions.
1202 It has an internal FPGA northbridge, which is compatible to
1205 config CPU_LOONGSON2F
1207 depends on SYS_HAS_CPU_LOONGSON2F
1208 select CPU_LOONGSON2
1210 select ARCH_REQUIRE_GPIOLIB
1212 The Loongson 2F processor implements the MIPS III instruction set
1213 with many extensions.
1215 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1216 have a similar programming interface with FPGA northbridge used in
1219 config CPU_MIPS32_R1
1220 bool "MIPS32 Release 1"
1221 depends on SYS_HAS_CPU_MIPS32_R1
1222 select CPU_HAS_PREFETCH
1223 select CPU_SUPPORTS_32BIT_KERNEL
1224 select CPU_SUPPORTS_HIGHMEM
1226 Choose this option to build a kernel for release 1 or later of the
1227 MIPS32 architecture. Most modern embedded systems with a 32-bit
1228 MIPS processor are based on a MIPS32 processor. If you know the
1229 specific type of processor in your system, choose those that one
1230 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1231 Release 2 of the MIPS32 architecture is available since several
1232 years so chances are you even have a MIPS32 Release 2 processor
1233 in which case you should choose CPU_MIPS32_R2 instead for better
1236 config CPU_MIPS32_R2
1237 bool "MIPS32 Release 2"
1238 depends on SYS_HAS_CPU_MIPS32_R2
1239 select CPU_HAS_PREFETCH
1240 select CPU_SUPPORTS_32BIT_KERNEL
1241 select CPU_SUPPORTS_HIGHMEM
1243 Choose this option to build a kernel for release 2 or later of the
1244 MIPS32 architecture. Most modern embedded systems with a 32-bit
1245 MIPS processor are based on a MIPS32 processor. If you know the
1246 specific type of processor in your system, choose those that one
1247 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1249 config CPU_MIPS64_R1
1250 bool "MIPS64 Release 1"
1251 depends on SYS_HAS_CPU_MIPS64_R1
1252 select CPU_HAS_PREFETCH
1253 select CPU_SUPPORTS_32BIT_KERNEL
1254 select CPU_SUPPORTS_64BIT_KERNEL
1255 select CPU_SUPPORTS_HIGHMEM
1256 select CPU_SUPPORTS_HUGEPAGES
1258 Choose this option to build a kernel for release 1 or later of the
1259 MIPS64 architecture. Many modern embedded systems with a 64-bit
1260 MIPS processor are based on a MIPS64 processor. If you know the
1261 specific type of processor in your system, choose those that one
1262 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1263 Release 2 of the MIPS64 architecture is available since several
1264 years so chances are you even have a MIPS64 Release 2 processor
1265 in which case you should choose CPU_MIPS64_R2 instead for better
1268 config CPU_MIPS64_R2
1269 bool "MIPS64 Release 2"
1270 depends on SYS_HAS_CPU_MIPS64_R2
1271 select CPU_HAS_PREFETCH
1272 select CPU_SUPPORTS_32BIT_KERNEL
1273 select CPU_SUPPORTS_64BIT_KERNEL
1274 select CPU_SUPPORTS_HIGHMEM
1275 select CPU_SUPPORTS_HUGEPAGES
1277 Choose this option to build a kernel for release 2 or later of the
1278 MIPS64 architecture. Many modern embedded systems with a 64-bit
1279 MIPS processor are based on a MIPS64 processor. If you know the
1280 specific type of processor in your system, choose those that one
1281 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1285 depends on SYS_HAS_CPU_R3000
1287 select CPU_SUPPORTS_32BIT_KERNEL
1288 select CPU_SUPPORTS_HIGHMEM
1290 Please make sure to pick the right CPU type. Linux/MIPS is not
1291 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1292 *not* work on R4000 machines and vice versa. However, since most
1293 of the supported machines have an R4000 (or similar) CPU, R4x00
1294 might be a safe bet. If the resulting kernel does not work,
1295 try to recompile with R3000.
1299 depends on SYS_HAS_CPU_TX39XX
1300 select CPU_SUPPORTS_32BIT_KERNEL
1304 depends on SYS_HAS_CPU_VR41XX
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_64BIT_KERNEL
1308 The options selects support for the NEC VR4100 series of processors.
1309 Only choose this option if you have one of these processors as a
1310 kernel built with this option will not run on any other type of
1311 processor or vice versa.
1315 depends on SYS_HAS_CPU_R4300
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1319 MIPS Technologies R4300-series processors.
1323 depends on SYS_HAS_CPU_R4X00
1324 select CPU_SUPPORTS_32BIT_KERNEL
1325 select CPU_SUPPORTS_64BIT_KERNEL
1327 MIPS Technologies R4000-series processors other than 4300, including
1328 the R4000, R4400, R4600, and 4700.
1332 depends on SYS_HAS_CPU_TX49XX
1333 select CPU_HAS_PREFETCH
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1339 depends on SYS_HAS_CPU_R5000
1340 select CPU_SUPPORTS_32BIT_KERNEL
1341 select CPU_SUPPORTS_64BIT_KERNEL
1343 MIPS Technologies R5000-series processors other than the Nevada.
1347 depends on SYS_HAS_CPU_R5432
1348 select CPU_SUPPORTS_32BIT_KERNEL
1349 select CPU_SUPPORTS_64BIT_KERNEL
1353 depends on SYS_HAS_CPU_R5500
1354 select CPU_SUPPORTS_32BIT_KERNEL
1355 select CPU_SUPPORTS_64BIT_KERNEL
1356 select CPU_SUPPORTS_HUGEPAGES
1358 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1363 depends on EXPERIMENTAL
1364 depends on SYS_HAS_CPU_R6000
1365 select CPU_SUPPORTS_32BIT_KERNEL
1367 MIPS Technologies R6000 and R6000A series processors. Note these
1368 processors are extremely rare and the support for them is incomplete.
1372 depends on SYS_HAS_CPU_NEVADA
1373 select CPU_SUPPORTS_32BIT_KERNEL
1374 select CPU_SUPPORTS_64BIT_KERNEL
1376 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1380 depends on EXPERIMENTAL
1381 depends on SYS_HAS_CPU_R8000
1382 select CPU_HAS_PREFETCH
1383 select CPU_SUPPORTS_64BIT_KERNEL
1385 MIPS Technologies R8000 processors. Note these processors are
1386 uncommon and the support for them is incomplete.
1390 depends on SYS_HAS_CPU_R10000
1391 select CPU_HAS_PREFETCH
1392 select CPU_SUPPORTS_32BIT_KERNEL
1393 select CPU_SUPPORTS_64BIT_KERNEL
1394 select CPU_SUPPORTS_HIGHMEM
1396 MIPS Technologies R10000-series processors.
1400 depends on SYS_HAS_CPU_RM7000
1401 select CPU_HAS_PREFETCH
1402 select CPU_SUPPORTS_32BIT_KERNEL
1403 select CPU_SUPPORTS_64BIT_KERNEL
1404 select CPU_SUPPORTS_HIGHMEM
1408 depends on SYS_HAS_CPU_RM9000
1409 select CPU_HAS_PREFETCH
1410 select CPU_SUPPORTS_32BIT_KERNEL
1411 select CPU_SUPPORTS_64BIT_KERNEL
1412 select CPU_SUPPORTS_HIGHMEM
1413 select WEAK_ORDERING
1417 depends on SYS_HAS_CPU_SB1
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_64BIT_KERNEL
1420 select CPU_SUPPORTS_HIGHMEM
1421 select WEAK_ORDERING
1423 config CPU_CAVIUM_OCTEON
1424 bool "Cavium Octeon processor"
1425 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1426 select CPU_HAS_PREFETCH
1427 select CPU_SUPPORTS_64BIT_KERNEL
1428 select SYS_SUPPORTS_SMP
1429 select NR_CPUS_DEFAULT_16
1430 select WEAK_ORDERING
1431 select CPU_SUPPORTS_HIGHMEM
1432 select CPU_SUPPORTS_HUGEPAGES
1434 The Cavium Octeon processor is a highly integrated chip containing
1435 many ethernet hardware widgets for networking tasks. The processor
1436 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1437 Full details can be found at http://www.caviumnetworks.com.
1439 config CPU_BMIPS3300
1441 depends on SYS_HAS_CPU_BMIPS3300
1444 Broadcom BMIPS3300 processors.
1446 config CPU_BMIPS4350
1448 depends on SYS_HAS_CPU_BMIPS4350
1450 select SYS_SUPPORTS_SMP
1451 select SYS_SUPPORTS_HOTPLUG_CPU
1453 Broadcom BMIPS4350 ("VIPER") processors.
1455 config CPU_BMIPS4380
1457 depends on SYS_HAS_CPU_BMIPS4380
1459 select SYS_SUPPORTS_SMP
1460 select SYS_SUPPORTS_HOTPLUG_CPU
1462 Broadcom BMIPS4380 processors.
1464 config CPU_BMIPS5000
1466 depends on SYS_HAS_CPU_BMIPS5000
1468 select CPU_SUPPORTS_HIGHMEM
1469 select MIPS_CPU_SCACHE
1470 select SYS_SUPPORTS_SMP
1471 select SYS_SUPPORTS_HOTPLUG_CPU
1473 Broadcom BMIPS5000 processors.
1476 bool "Netlogic XLR SoC"
1477 depends on SYS_HAS_CPU_XLR
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_64BIT_KERNEL
1480 select CPU_SUPPORTS_HIGHMEM
1481 select WEAK_ORDERING
1482 select WEAK_REORDERING_BEYOND_LLSC
1483 select CPU_SUPPORTS_HUGEPAGES
1485 Netlogic Microsystems XLR/XLS processors.
1488 bool "Netlogic XLP SoC"
1489 depends on SYS_HAS_CPU_XLP
1490 select CPU_SUPPORTS_32BIT_KERNEL
1491 select CPU_SUPPORTS_64BIT_KERNEL
1492 select CPU_SUPPORTS_HIGHMEM
1494 select WEAK_ORDERING
1495 select WEAK_REORDERING_BEYOND_LLSC
1496 select CPU_HAS_PREFETCH
1498 Netlogic Microsystems XLP processors.
1502 config CPU_NOP_WORKAROUNDS
1505 config CPU_JUMP_WORKAROUNDS
1508 config CPU_LOONGSON2F_WORKAROUNDS
1509 bool "Loongson 2F Workarounds"
1511 select CPU_NOP_WORKAROUNDS
1512 select CPU_JUMP_WORKAROUNDS
1514 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1515 require workarounds. Without workarounds the system may hang
1516 unexpectedly. For more information please refer to the gas
1517 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1519 Loongson 2F03 and later have fixed these issues and no workarounds
1520 are needed. The workarounds have no significant side effect on them
1521 but may decrease the performance of the system so this option should
1522 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1525 If unsure, please say Y.
1526 endif # CPU_LOONGSON2F
1528 config SYS_SUPPORTS_ZBOOT
1530 select HAVE_KERNEL_GZIP
1531 select HAVE_KERNEL_BZIP2
1532 select HAVE_KERNEL_LZMA
1533 select HAVE_KERNEL_LZO
1535 config SYS_SUPPORTS_ZBOOT_UART16550
1537 select SYS_SUPPORTS_ZBOOT
1539 config CPU_LOONGSON2
1541 select CPU_SUPPORTS_32BIT_KERNEL
1542 select CPU_SUPPORTS_64BIT_KERNEL
1543 select CPU_SUPPORTS_HIGHMEM
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select DMA_NONCOHERENT
1551 select SWAP_IO_SPACE
1552 select WEAK_ORDERING
1554 config SYS_HAS_CPU_LOONGSON2E
1557 config SYS_HAS_CPU_LOONGSON2F
1559 select CPU_SUPPORTS_CPUFREQ
1560 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1561 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1563 config SYS_HAS_CPU_MIPS32_R1
1566 config SYS_HAS_CPU_MIPS32_R2
1569 config SYS_HAS_CPU_MIPS64_R1
1572 config SYS_HAS_CPU_MIPS64_R2
1575 config SYS_HAS_CPU_R3000
1578 config SYS_HAS_CPU_TX39XX
1581 config SYS_HAS_CPU_VR41XX
1584 config SYS_HAS_CPU_R4300
1587 config SYS_HAS_CPU_R4X00
1590 config SYS_HAS_CPU_TX49XX
1593 config SYS_HAS_CPU_R5000
1596 config SYS_HAS_CPU_R5432
1599 config SYS_HAS_CPU_R5500
1602 config SYS_HAS_CPU_R6000
1605 config SYS_HAS_CPU_NEVADA
1608 config SYS_HAS_CPU_R8000
1611 config SYS_HAS_CPU_R10000
1614 config SYS_HAS_CPU_RM7000
1617 config SYS_HAS_CPU_RM9000
1620 config SYS_HAS_CPU_SB1
1623 config SYS_HAS_CPU_CAVIUM_OCTEON
1626 config SYS_HAS_CPU_BMIPS3300
1629 config SYS_HAS_CPU_BMIPS4350
1632 config SYS_HAS_CPU_BMIPS4380
1635 config SYS_HAS_CPU_BMIPS5000
1638 config SYS_HAS_CPU_XLR
1641 config SYS_HAS_CPU_XLP
1645 # CPU may reorder R->R, R->W, W->R, W->W
1646 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1648 config WEAK_ORDERING
1652 # CPU may reorder reads and writes beyond LL/SC
1653 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1655 config WEAK_REORDERING_BEYOND_LLSC
1660 # These two indicate any level of the MIPS32 and MIPS64 architecture
1664 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1668 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1671 # These two indicate the revision of the architecture, either Release 1 or Release 2
1675 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1679 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1681 config SYS_SUPPORTS_32BIT_KERNEL
1683 config SYS_SUPPORTS_64BIT_KERNEL
1685 config CPU_SUPPORTS_32BIT_KERNEL
1687 config CPU_SUPPORTS_64BIT_KERNEL
1689 config CPU_SUPPORTS_CPUFREQ
1691 config CPU_SUPPORTS_ADDRWINCFG
1693 config CPU_SUPPORTS_HUGEPAGES
1695 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1697 config MIPS_PGD_C0_CONTEXT
1699 default y if 64BIT && CPU_MIPSR2
1702 # Set to y for ptrace access to watch registers.
1704 config HARDWARE_WATCHPOINTS
1706 default y if CPU_MIPSR1 || CPU_MIPSR2
1712 prompt "Kernel code model"
1714 You should only select this option if you have a workload that
1715 actually benefits from 64-bit processing or if your machine has
1716 large memory. You will only be presented a single option in this
1717 menu if your system does not support both 32-bit and 64-bit kernels.
1720 bool "32-bit kernel"
1721 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1724 Select this option if you want to build a 32-bit kernel.
1726 bool "64-bit kernel"
1727 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1728 select HAVE_SYSCALL_WRAPPERS
1730 Select this option if you want to build a 64-bit kernel.
1735 prompt "Kernel page size"
1736 default PAGE_SIZE_4KB
1738 config PAGE_SIZE_4KB
1740 depends on !CPU_LOONGSON2
1742 This option select the standard 4kB Linux page size. On some
1743 R3000-family processors this is the only available page size. Using
1744 4kB page size will minimize memory consumption and is therefore
1745 recommended for low memory systems.
1747 config PAGE_SIZE_8KB
1749 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1751 Using 8kB page size will result in higher performance kernel at
1752 the price of higher memory consumption. This option is available
1753 only on R8000 and cnMIPS processors. Note that you will need a
1754 suitable Linux distribution to support this.
1756 config PAGE_SIZE_16KB
1758 depends on !CPU_R3000 && !CPU_TX39XX
1760 Using 16kB page size will result in higher performance kernel at
1761 the price of higher memory consumption. This option is available on
1762 all non-R3000 family processors. Note that you will need a suitable
1763 Linux distribution to support this.
1765 config PAGE_SIZE_32KB
1767 depends on CPU_CAVIUM_OCTEON
1769 Using 32kB page size will result in higher performance kernel at
1770 the price of higher memory consumption. This option is available
1771 only on cnMIPS cores. Note that you will need a suitable Linux
1772 distribution to support this.
1774 config PAGE_SIZE_64KB
1776 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1778 Using 64kB page size will result in higher performance kernel at
1779 the price of higher memory consumption. This option is available on
1780 all non-R3000 family processor. Not that at the time of this
1781 writing this option is still high experimental.
1785 config FORCE_MAX_ZONEORDER
1786 int "Maximum zone order"
1787 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1788 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1789 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1790 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1791 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1792 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1796 The kernel memory allocator divides physically contiguous memory
1797 blocks into "zones", where each zone is a power of two number of
1798 pages. This option selects the largest power of two that the kernel
1799 keeps in the memory allocator. If you need to allocate very large
1800 blocks of physically contiguous memory, then you may need to
1801 increase this value.
1803 This config option is actually maximum order plus one. For example,
1804 a value of 11 means that the largest free memory block is 2^10 pages.
1806 The page size is not necessarily 4KB. Keep this in mind
1807 when choosing a value for this option.
1812 config IP22_CPU_SCACHE
1817 # Support for a MIPS32 / MIPS64 style S-caches
1819 config MIPS_CPU_SCACHE
1823 config R5000_CPU_SCACHE
1827 config RM7000_CPU_SCACHE
1831 config SIBYTE_DMA_PAGEOPS
1832 bool "Use DMA to clear/copy pages"
1835 Instead of using the CPU to zero and copy pages, use a Data Mover
1836 channel. These DMA channels are otherwise unused by the standard
1837 SiByte Linux port. Seems to give a small performance benefit.
1839 config CPU_HAS_PREFETCH
1843 prompt "MIPS MT options"
1845 config MIPS_MT_DISABLED
1846 bool "Disable multithreading support."
1848 Use this option if your workload can't take advantage of
1849 MIPS hardware multithreading support. On systems that don't have
1850 the option of an MT-enabled processor this option will be the only
1851 option in this menu.
1854 bool "Use 1 TC on each available VPE for SMP"
1855 depends on SYS_SUPPORTS_MULTITHREADING
1856 select CPU_MIPSR2_IRQ_VI
1857 select CPU_MIPSR2_IRQ_EI
1859 select NR_CPUS_DEFAULT_2
1861 select SYS_SUPPORTS_SCHED_SMT if SMP
1862 select SYS_SUPPORTS_SMP
1865 This is a kernel model which is known a VSMP but lately has been
1866 marketesed into SMVP.
1867 Virtual SMP uses the processor's VPEs to implement virtual
1868 processors. In currently available configuration of the 34K processor
1869 this allows for a dual processor. Both processors will share the same
1870 primary caches; each will obtain the half of the TLB for it's own
1871 exclusive use. For a layman this model can be described as similar to
1872 what Intel calls Hyperthreading.
1874 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1877 bool "SMTC: Use all TCs on all VPEs for SMP"
1878 depends on CPU_MIPS32_R2
1879 #depends on CPU_MIPS64_R2 # once there is hardware ...
1880 depends on SYS_SUPPORTS_MULTITHREADING
1881 select CPU_MIPSR2_IRQ_VI
1882 select CPU_MIPSR2_IRQ_EI
1884 select NR_CPUS_DEFAULT_8
1886 select SYS_SUPPORTS_SMP
1889 This is a kernel model which is known a SMTC or lately has been
1890 marketesed into SMVP.
1891 is presenting the available TC's of the core as processors to Linux.
1892 On currently available 34K processors this means a Linux system will
1893 see up to 5 processors. The implementation of the SMTC kernel differs
1894 significantly from VSMP and cannot efficiently coexist in the same
1895 kernel binary so the choice between VSMP and SMTC is a compile time
1898 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1906 bool "SMT (multithreading) scheduler support"
1907 depends on SYS_SUPPORTS_SCHED_SMT
1910 SMT scheduler support improves the CPU scheduler's decision making
1911 when dealing with MIPS MT enabled cores at a cost of slightly
1912 increased overhead in some places. If unsure say N here.
1914 config SYS_SUPPORTS_SCHED_SMT
1918 config SYS_SUPPORTS_MULTITHREADING
1921 config MIPS_MT_FPAFF
1922 bool "Dynamic FPU affinity for FP-intensive threads"
1924 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1926 config MIPS_VPE_LOADER
1927 bool "VPE loader support."
1928 depends on SYS_SUPPORTS_MULTITHREADING
1929 select CPU_MIPSR2_IRQ_VI
1930 select CPU_MIPSR2_IRQ_EI
1933 Includes a loader for loading an elf relocatable object
1934 onto another VPE and running it.
1936 config MIPS_MT_SMTC_IM_BACKSTOP
1937 bool "Use per-TC register bits as backstop for inhibited IM bits"
1938 depends on MIPS_MT_SMTC
1941 To support multiple TC microthreads acting as "CPUs" within
1942 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1943 during interrupt handling. To support legacy drivers and interrupt
1944 controller management code, SMTC has a "backstop" to track and
1945 if necessary restore the interrupt mask. This has some performance
1946 impact on interrupt service overhead.
1948 config MIPS_MT_SMTC_IRQAFF
1949 bool "Support IRQ affinity API"
1950 depends on MIPS_MT_SMTC
1953 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1954 for SMTC Linux kernel. Requires platform support, of which
1955 an example can be found in the MIPS kernel i8259 and Malta
1956 platform code. Adds some overhead to interrupt dispatch, and
1957 should be used only if you know what you are doing.
1959 config MIPS_VPE_LOADER_TOM
1960 bool "Load VPE program into memory hidden from linux"
1961 depends on MIPS_VPE_LOADER
1964 The loader can use memory that is present but has been hidden from
1965 Linux using the kernel command line option "mem=xxMB". It's up to
1966 you to ensure the amount you put in the option and the space your
1967 program requires is less or equal to the amount physically present.
1969 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1970 config MIPS_VPE_APSP_API
1971 bool "Enable support for AP/SP API (RTLX)"
1972 depends on MIPS_VPE_LOADER
1975 config MIPS_APSP_KSPD
1977 depends on MIPS_VPE_APSP_API
1980 KSPD is a kernel daemon that accepts syscall requests from the SP
1981 side, actions them and returns the results. It also handles the
1982 "exit" syscall notifying other kernel modules the SP program is
1983 exiting. You probably want to say yes here.
1986 bool "MIPS CMP framework support"
1987 depends on SYS_SUPPORTS_MIPS_CMP
1989 select SYS_SUPPORTS_SMP
1990 select SYS_SUPPORTS_SCHED_SMT if SMP
1991 select WEAK_ORDERING
1994 This is a placeholder option for the GCMP work. It will need to
1995 be handled differently...
1997 config SB1_PASS_1_WORKAROUNDS
1999 depends on CPU_SB1_PASS_1
2002 config SB1_PASS_2_WORKAROUNDS
2004 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2007 config SB1_PASS_2_1_WORKAROUNDS
2009 depends on CPU_SB1 && CPU_SB1_PASS_2
2012 config 64BIT_PHYS_ADDR
2015 config ARCH_PHYS_ADDR_T_64BIT
2016 def_bool 64BIT_PHYS_ADDR
2018 config CPU_HAS_SMARTMIPS
2019 depends on SYS_SUPPORTS_SMARTMIPS
2020 bool "Support for the SmartMIPS ASE"
2022 SmartMIPS is a extension of the MIPS32 architecture aimed at
2023 increased security at both hardware and software level for
2024 smartcards. Enabling this option will allow proper use of the
2025 SmartMIPS instructions by Linux applications. However a kernel with
2026 this option will not work on a MIPS core without SmartMIPS core. If
2027 you don't know you probably don't have SmartMIPS and should say N
2037 # Vectored interrupt mode is an R2 feature
2039 config CPU_MIPSR2_IRQ_VI
2043 # Extended interrupt mode is an R2 feature
2045 config CPU_MIPSR2_IRQ_EI
2050 depends on !CPU_R3000
2056 config CPU_DADDI_WORKAROUNDS
2059 config CPU_R4000_WORKAROUNDS
2061 select CPU_R4400_WORKAROUNDS
2063 config CPU_R4400_WORKAROUNDS
2067 # - Highmem only makes sense for the 32-bit kernel.
2068 # - The current highmem code will only work properly on physically indexed
2069 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2070 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2071 # moment we protect the user and offer the highmem option only on machines
2072 # where it's known to be safe. This will not offer highmem on a few systems
2073 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2074 # indexed CPUs but we're playing safe.
2075 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2076 # know they might have memory configurations that could make use of highmem
2080 bool "High Memory Support"
2081 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2083 config CPU_SUPPORTS_HIGHMEM
2086 config SYS_SUPPORTS_HIGHMEM
2089 config SYS_SUPPORTS_SMARTMIPS
2092 config ARCH_FLATMEM_ENABLE
2094 depends on !NUMA && !CPU_LOONGSON2
2096 config ARCH_DISCONTIGMEM_ENABLE
2098 default y if SGI_IP27
2100 Say Y to support efficient handling of discontiguous physical memory,
2101 for architectures which are either NUMA (Non-Uniform Memory Access)
2102 or have huge holes in the physical address space for other reasons.
2103 See <file:Documentation/vm/numa> for more.
2105 config ARCH_SPARSEMEM_ENABLE
2107 select SPARSEMEM_STATIC
2111 depends on SYS_SUPPORTS_NUMA
2113 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2114 Access). This option improves performance on systems with more
2115 than two nodes; on two node systems it is generally better to
2116 leave it disabled; on single node systems disable this option
2119 config SYS_SUPPORTS_NUMA
2125 depends on NEED_MULTIPLE_NODES
2127 config HW_PERF_EVENTS
2128 bool "Enable hardware performance counter support for perf events"
2129 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2132 Enable hardware performance counter support for perf events. If
2133 disabled, perf events will use software events only.
2138 bool "Multi-Processing support"
2139 depends on SYS_SUPPORTS_SMP
2141 select USE_GENERIC_SMP_HELPERS
2143 This enables support for systems with more than one CPU. If you have
2144 a system with only one CPU, like most personal computers, say N. If
2145 you have a system with more than one CPU, say Y.
2147 If you say N here, the kernel will run on single and multiprocessor
2148 machines, but will use only one CPU of a multiprocessor machine. If
2149 you say Y here, the kernel will run on many, but not all,
2150 singleprocessor machines. On a singleprocessor machine, the kernel
2151 will run faster if you say N here.
2153 People using multiprocessor machines who say Y here should also say
2154 Y to "Enhanced Real Time Clock Support", below.
2156 See also the SMP-HOWTO available at
2157 <http://www.tldp.org/docs.html#howto>.
2159 If you don't know what to do here, say N.
2164 config SYS_SUPPORTS_MIPS_CMP
2167 config SYS_SUPPORTS_SMP
2170 config NR_CPUS_DEFAULT_1
2173 config NR_CPUS_DEFAULT_2
2176 config NR_CPUS_DEFAULT_4
2179 config NR_CPUS_DEFAULT_8
2182 config NR_CPUS_DEFAULT_16
2185 config NR_CPUS_DEFAULT_32
2188 config NR_CPUS_DEFAULT_64
2192 int "Maximum number of CPUs (2-64)"
2193 range 1 64 if NR_CPUS_DEFAULT_1
2195 default "1" if NR_CPUS_DEFAULT_1
2196 default "2" if NR_CPUS_DEFAULT_2
2197 default "4" if NR_CPUS_DEFAULT_4
2198 default "8" if NR_CPUS_DEFAULT_8
2199 default "16" if NR_CPUS_DEFAULT_16
2200 default "32" if NR_CPUS_DEFAULT_32
2201 default "64" if NR_CPUS_DEFAULT_64
2203 This allows you to specify the maximum number of CPUs which this
2204 kernel will support. The maximum supported value is 32 for 32-bit
2205 kernel and 64 for 64-bit kernels; the minimum value which makes
2206 sense is 1 for Qemu (useful only for kernel debugging purposes)
2207 and 2 for all others.
2209 This is purely to save memory - each supported CPU adds
2210 approximately eight kilobytes to the kernel image. For best
2211 performance should round up your number of processors to the next
2215 # Timer Interrupt Frequency Configuration
2219 prompt "Timer frequency"
2222 Allows the configuration of the timer frequency.
2225 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2228 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2231 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2234 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2240 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2243 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2247 config SYS_SUPPORTS_48HZ
2250 config SYS_SUPPORTS_100HZ
2253 config SYS_SUPPORTS_128HZ
2256 config SYS_SUPPORTS_250HZ
2259 config SYS_SUPPORTS_256HZ
2262 config SYS_SUPPORTS_1000HZ
2265 config SYS_SUPPORTS_1024HZ
2268 config SYS_SUPPORTS_ARBIT_HZ
2270 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2271 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2272 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2273 !SYS_SUPPORTS_1024HZ
2278 default 100 if HZ_100
2279 default 128 if HZ_128
2280 default 250 if HZ_250
2281 default 256 if HZ_256
2282 default 1000 if HZ_1000
2283 default 1024 if HZ_1024
2285 source "kernel/Kconfig.preempt"
2288 bool "Kexec system call (EXPERIMENTAL)"
2289 depends on EXPERIMENTAL
2291 kexec is a system call that implements the ability to shutdown your
2292 current kernel, and to start another kernel. It is like a reboot
2293 but it is independent of the system firmware. And like a reboot
2294 you can start any kernel with it, not just Linux.
2296 The name comes from the similarity to the exec system call.
2298 It is an ongoing process to be certain the hardware in a machine
2299 is properly shutdown, so do not be surprised if this code does not
2300 initially work for you. It may help to enable device hotplugging
2301 support. As of this writing the exact hardware interface is
2302 strongly in flux, so no good recommendation can be made.
2305 bool "Enable seccomp to safely compute untrusted bytecode"
2309 This kernel feature is useful for number crunching applications
2310 that may need to compute untrusted bytecode during their
2311 execution. By using pipes or other transports made available to
2312 the process as file descriptors supporting the read/write
2313 syscalls, it's possible to isolate those applications in
2314 their own address space using seccomp. Once seccomp is
2315 enabled via /proc/<pid>/seccomp, it cannot be disabled
2316 and the task is only allowed to execute a few safe syscalls
2317 defined by each seccomp mode.
2319 If unsure, say Y. Only embedded should say N here.
2322 bool "Flattened Device Tree support"
2324 select OF_EARLY_FLATTREE
2327 Include support for flattened device tree machine descriptions.
2331 config LOCKDEP_SUPPORT
2335 config STACKTRACE_SUPPORT
2339 source "init/Kconfig"
2341 source "kernel/Kconfig.freezer"
2343 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2351 bool "Support for PCI controller"
2352 depends on HW_HAS_PCI
2354 select GENERIC_PCI_IOMAP
2355 select NO_GENERIC_PCI_IOPORT_MAP
2357 Find out whether you have a PCI motherboard. PCI is the name of a
2358 bus system, i.e. the way the CPU talks to the other stuff inside
2359 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2365 source "drivers/pci/Kconfig"
2368 # ISA support is now enabled via select. Too many systems still have the one
2369 # or other ISA chip on the board that users don't know about so don't expect
2370 # users to choose the right thing ...
2377 depends on HW_HAS_EISA
2379 select GENERIC_ISA_DMA
2381 The Extended Industry Standard Architecture (EISA) bus was
2382 developed as an open alternative to the IBM MicroChannel bus.
2384 The EISA bus provided some of the features of the IBM MicroChannel
2385 bus while maintaining backward compatibility with cards made for
2386 the older ISA bus. The EISA bus saw limited use between 1988 and
2387 1995 when it was made obsolete by the PCI bus.
2389 Say Y here if you are building a kernel for an EISA-based machine.
2393 source "drivers/eisa/Kconfig"
2396 bool "TURBOchannel support"
2397 depends on MACH_DECSTATION
2399 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2400 processors. TURBOchannel programming specifications are available
2402 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2404 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2405 Linux driver support status is documented at:
2406 <http://www.linux-mips.org/wiki/DECstation>
2416 select MIPS_EXTERNAL_TIMER
2421 source "drivers/pcmcia/Kconfig"
2423 source "drivers/pci/hotplug/Kconfig"
2426 bool "RapidIO support"
2430 If you say Y here, the kernel will include drivers and
2431 infrastructure code to support RapidIO interconnect devices.
2433 source "drivers/rapidio/Kconfig"
2437 menu "Executable file formats"
2439 source "fs/Kconfig.binfmt"
2444 config MIPS32_COMPAT
2445 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2448 Select this option if you want Linux/MIPS 32-bit binary
2449 compatibility. Since all software available for Linux/MIPS is
2450 currently 32-bit you should say Y here.
2454 depends on MIPS32_COMPAT
2455 select ARCH_WANT_OLD_COMPAT_IPC
2458 config SYSVIPC_COMPAT
2460 depends on COMPAT && SYSVIPC
2464 bool "Kernel support for o32 binaries"
2465 depends on MIPS32_COMPAT
2467 Select this option if you want to run o32 binaries. These are pure
2468 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2469 existing binaries are in this format.
2474 bool "Kernel support for n32 binaries"
2475 depends on MIPS32_COMPAT
2477 Select this option if you want to run n32 binaries. These are
2478 64-bit binaries using 32-bit quantities for addressing and certain
2479 data that would normally be 64-bit. They are used in special
2486 default y if MIPS32_O32 || MIPS32_N32
2490 menu "Power management options"
2492 config ARCH_HIBERNATION_POSSIBLE
2494 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2496 config ARCH_SUSPEND_POSSIBLE
2498 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2500 source "kernel/power/Kconfig"
2504 source "arch/mips/kernel/cpufreq/Kconfig"
2506 source "net/Kconfig"
2508 source "drivers/Kconfig"
2512 source "arch/mips/Kconfig.debug"
2514 source "security/Kconfig"
2516 source "crypto/Kconfig"
2518 source "lib/Kconfig"