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 ARCH_SPARSEMEM_ENABLE
1427 select CPU_HAS_PREFETCH
1428 select CPU_SUPPORTS_64BIT_KERNEL
1429 select SYS_SUPPORTS_SMP
1430 select NR_CPUS_DEFAULT_16
1431 select WEAK_ORDERING
1432 select CPU_SUPPORTS_HIGHMEM
1433 select CPU_SUPPORTS_HUGEPAGES
1435 The Cavium Octeon processor is a highly integrated chip containing
1436 many ethernet hardware widgets for networking tasks. The processor
1437 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1438 Full details can be found at http://www.caviumnetworks.com.
1440 config CPU_BMIPS3300
1442 depends on SYS_HAS_CPU_BMIPS3300
1445 Broadcom BMIPS3300 processors.
1447 config CPU_BMIPS4350
1449 depends on SYS_HAS_CPU_BMIPS4350
1451 select SYS_SUPPORTS_SMP
1452 select SYS_SUPPORTS_HOTPLUG_CPU
1454 Broadcom BMIPS4350 ("VIPER") processors.
1456 config CPU_BMIPS4380
1458 depends on SYS_HAS_CPU_BMIPS4380
1460 select SYS_SUPPORTS_SMP
1461 select SYS_SUPPORTS_HOTPLUG_CPU
1463 Broadcom BMIPS4380 processors.
1465 config CPU_BMIPS5000
1467 depends on SYS_HAS_CPU_BMIPS5000
1469 select CPU_SUPPORTS_HIGHMEM
1470 select MIPS_CPU_SCACHE
1471 select SYS_SUPPORTS_SMP
1472 select SYS_SUPPORTS_HOTPLUG_CPU
1474 Broadcom BMIPS5000 processors.
1477 bool "Netlogic XLR SoC"
1478 depends on SYS_HAS_CPU_XLR
1479 select CPU_SUPPORTS_32BIT_KERNEL
1480 select CPU_SUPPORTS_64BIT_KERNEL
1481 select CPU_SUPPORTS_HIGHMEM
1482 select WEAK_ORDERING
1483 select WEAK_REORDERING_BEYOND_LLSC
1484 select CPU_SUPPORTS_HUGEPAGES
1486 Netlogic Microsystems XLR/XLS processors.
1489 bool "Netlogic XLP SoC"
1490 depends on SYS_HAS_CPU_XLP
1491 select CPU_SUPPORTS_32BIT_KERNEL
1492 select CPU_SUPPORTS_64BIT_KERNEL
1493 select CPU_SUPPORTS_HIGHMEM
1495 select WEAK_ORDERING
1496 select WEAK_REORDERING_BEYOND_LLSC
1497 select CPU_HAS_PREFETCH
1499 Netlogic Microsystems XLP processors.
1503 config CPU_NOP_WORKAROUNDS
1506 config CPU_JUMP_WORKAROUNDS
1509 config CPU_LOONGSON2F_WORKAROUNDS
1510 bool "Loongson 2F Workarounds"
1512 select CPU_NOP_WORKAROUNDS
1513 select CPU_JUMP_WORKAROUNDS
1515 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1516 require workarounds. Without workarounds the system may hang
1517 unexpectedly. For more information please refer to the gas
1518 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1520 Loongson 2F03 and later have fixed these issues and no workarounds
1521 are needed. The workarounds have no significant side effect on them
1522 but may decrease the performance of the system so this option should
1523 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1526 If unsure, please say Y.
1527 endif # CPU_LOONGSON2F
1529 config SYS_SUPPORTS_ZBOOT
1531 select HAVE_KERNEL_GZIP
1532 select HAVE_KERNEL_BZIP2
1533 select HAVE_KERNEL_LZMA
1534 select HAVE_KERNEL_LZO
1536 config SYS_SUPPORTS_ZBOOT_UART16550
1538 select SYS_SUPPORTS_ZBOOT
1540 config CPU_LOONGSON2
1542 select CPU_SUPPORTS_32BIT_KERNEL
1543 select CPU_SUPPORTS_64BIT_KERNEL
1544 select CPU_SUPPORTS_HIGHMEM
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select DMA_NONCOHERENT
1552 select SWAP_IO_SPACE
1553 select WEAK_ORDERING
1555 config SYS_HAS_CPU_LOONGSON2E
1558 config SYS_HAS_CPU_LOONGSON2F
1560 select CPU_SUPPORTS_CPUFREQ
1561 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1562 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1564 config SYS_HAS_CPU_MIPS32_R1
1567 config SYS_HAS_CPU_MIPS32_R2
1570 config SYS_HAS_CPU_MIPS64_R1
1573 config SYS_HAS_CPU_MIPS64_R2
1576 config SYS_HAS_CPU_R3000
1579 config SYS_HAS_CPU_TX39XX
1582 config SYS_HAS_CPU_VR41XX
1585 config SYS_HAS_CPU_R4300
1588 config SYS_HAS_CPU_R4X00
1591 config SYS_HAS_CPU_TX49XX
1594 config SYS_HAS_CPU_R5000
1597 config SYS_HAS_CPU_R5432
1600 config SYS_HAS_CPU_R5500
1603 config SYS_HAS_CPU_R6000
1606 config SYS_HAS_CPU_NEVADA
1609 config SYS_HAS_CPU_R8000
1612 config SYS_HAS_CPU_R10000
1615 config SYS_HAS_CPU_RM7000
1618 config SYS_HAS_CPU_RM9000
1621 config SYS_HAS_CPU_SB1
1624 config SYS_HAS_CPU_CAVIUM_OCTEON
1627 config SYS_HAS_CPU_BMIPS3300
1630 config SYS_HAS_CPU_BMIPS4350
1633 config SYS_HAS_CPU_BMIPS4380
1636 config SYS_HAS_CPU_BMIPS5000
1639 config SYS_HAS_CPU_XLR
1642 config SYS_HAS_CPU_XLP
1646 # CPU may reorder R->R, R->W, W->R, W->W
1647 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1649 config WEAK_ORDERING
1653 # CPU may reorder reads and writes beyond LL/SC
1654 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1656 config WEAK_REORDERING_BEYOND_LLSC
1661 # These two indicate any level of the MIPS32 and MIPS64 architecture
1665 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1669 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1672 # These two indicate the revision of the architecture, either Release 1 or Release 2
1676 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1680 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1682 config SYS_SUPPORTS_32BIT_KERNEL
1684 config SYS_SUPPORTS_64BIT_KERNEL
1686 config CPU_SUPPORTS_32BIT_KERNEL
1688 config CPU_SUPPORTS_64BIT_KERNEL
1690 config CPU_SUPPORTS_CPUFREQ
1692 config CPU_SUPPORTS_ADDRWINCFG
1694 config CPU_SUPPORTS_HUGEPAGES
1696 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1698 config MIPS_PGD_C0_CONTEXT
1700 default y if 64BIT && CPU_MIPSR2
1703 # Set to y for ptrace access to watch registers.
1705 config HARDWARE_WATCHPOINTS
1707 default y if CPU_MIPSR1 || CPU_MIPSR2
1713 prompt "Kernel code model"
1715 You should only select this option if you have a workload that
1716 actually benefits from 64-bit processing or if your machine has
1717 large memory. You will only be presented a single option in this
1718 menu if your system does not support both 32-bit and 64-bit kernels.
1721 bool "32-bit kernel"
1722 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1725 Select this option if you want to build a 32-bit kernel.
1727 bool "64-bit kernel"
1728 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1729 select HAVE_SYSCALL_WRAPPERS
1731 Select this option if you want to build a 64-bit kernel.
1736 prompt "Kernel page size"
1737 default PAGE_SIZE_4KB
1739 config PAGE_SIZE_4KB
1741 depends on !CPU_LOONGSON2
1743 This option select the standard 4kB Linux page size. On some
1744 R3000-family processors this is the only available page size. Using
1745 4kB page size will minimize memory consumption and is therefore
1746 recommended for low memory systems.
1748 config PAGE_SIZE_8KB
1750 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1752 Using 8kB page size will result in higher performance kernel at
1753 the price of higher memory consumption. This option is available
1754 only on R8000 and cnMIPS processors. Note that you will need a
1755 suitable Linux distribution to support this.
1757 config PAGE_SIZE_16KB
1759 depends on !CPU_R3000 && !CPU_TX39XX
1761 Using 16kB page size will result in higher performance kernel at
1762 the price of higher memory consumption. This option is available on
1763 all non-R3000 family processors. Note that you will need a suitable
1764 Linux distribution to support this.
1766 config PAGE_SIZE_32KB
1768 depends on CPU_CAVIUM_OCTEON
1770 Using 32kB page size will result in higher performance kernel at
1771 the price of higher memory consumption. This option is available
1772 only on cnMIPS cores. Note that you will need a suitable Linux
1773 distribution to support this.
1775 config PAGE_SIZE_64KB
1777 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1779 Using 64kB page size will result in higher performance kernel at
1780 the price of higher memory consumption. This option is available on
1781 all non-R3000 family processor. Not that at the time of this
1782 writing this option is still high experimental.
1786 config FORCE_MAX_ZONEORDER
1787 int "Maximum zone order"
1788 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1789 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1790 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1791 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1792 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1793 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1797 The kernel memory allocator divides physically contiguous memory
1798 blocks into "zones", where each zone is a power of two number of
1799 pages. This option selects the largest power of two that the kernel
1800 keeps in the memory allocator. If you need to allocate very large
1801 blocks of physically contiguous memory, then you may need to
1802 increase this value.
1804 This config option is actually maximum order plus one. For example,
1805 a value of 11 means that the largest free memory block is 2^10 pages.
1807 The page size is not necessarily 4KB. Keep this in mind
1808 when choosing a value for this option.
1813 config IP22_CPU_SCACHE
1818 # Support for a MIPS32 / MIPS64 style S-caches
1820 config MIPS_CPU_SCACHE
1824 config R5000_CPU_SCACHE
1828 config RM7000_CPU_SCACHE
1832 config SIBYTE_DMA_PAGEOPS
1833 bool "Use DMA to clear/copy pages"
1836 Instead of using the CPU to zero and copy pages, use a Data Mover
1837 channel. These DMA channels are otherwise unused by the standard
1838 SiByte Linux port. Seems to give a small performance benefit.
1840 config CPU_HAS_PREFETCH
1844 prompt "MIPS MT options"
1846 config MIPS_MT_DISABLED
1847 bool "Disable multithreading support."
1849 Use this option if your workload can't take advantage of
1850 MIPS hardware multithreading support. On systems that don't have
1851 the option of an MT-enabled processor this option will be the only
1852 option in this menu.
1855 bool "Use 1 TC on each available VPE for SMP"
1856 depends on SYS_SUPPORTS_MULTITHREADING
1857 select CPU_MIPSR2_IRQ_VI
1858 select CPU_MIPSR2_IRQ_EI
1860 select NR_CPUS_DEFAULT_2
1862 select SYS_SUPPORTS_SCHED_SMT if SMP
1863 select SYS_SUPPORTS_SMP
1866 This is a kernel model which is known a VSMP but lately has been
1867 marketesed into SMVP.
1868 Virtual SMP uses the processor's VPEs to implement virtual
1869 processors. In currently available configuration of the 34K processor
1870 this allows for a dual processor. Both processors will share the same
1871 primary caches; each will obtain the half of the TLB for it's own
1872 exclusive use. For a layman this model can be described as similar to
1873 what Intel calls Hyperthreading.
1875 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1878 bool "SMTC: Use all TCs on all VPEs for SMP"
1879 depends on CPU_MIPS32_R2
1880 #depends on CPU_MIPS64_R2 # once there is hardware ...
1881 depends on SYS_SUPPORTS_MULTITHREADING
1882 select CPU_MIPSR2_IRQ_VI
1883 select CPU_MIPSR2_IRQ_EI
1885 select NR_CPUS_DEFAULT_8
1887 select SYS_SUPPORTS_SMP
1890 This is a kernel model which is known a SMTC or lately has been
1891 marketesed into SMVP.
1892 is presenting the available TC's of the core as processors to Linux.
1893 On currently available 34K processors this means a Linux system will
1894 see up to 5 processors. The implementation of the SMTC kernel differs
1895 significantly from VSMP and cannot efficiently coexist in the same
1896 kernel binary so the choice between VSMP and SMTC is a compile time
1899 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1907 bool "SMT (multithreading) scheduler support"
1908 depends on SYS_SUPPORTS_SCHED_SMT
1911 SMT scheduler support improves the CPU scheduler's decision making
1912 when dealing with MIPS MT enabled cores at a cost of slightly
1913 increased overhead in some places. If unsure say N here.
1915 config SYS_SUPPORTS_SCHED_SMT
1919 config SYS_SUPPORTS_MULTITHREADING
1922 config MIPS_MT_FPAFF
1923 bool "Dynamic FPU affinity for FP-intensive threads"
1925 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1927 config MIPS_VPE_LOADER
1928 bool "VPE loader support."
1929 depends on SYS_SUPPORTS_MULTITHREADING
1930 select CPU_MIPSR2_IRQ_VI
1931 select CPU_MIPSR2_IRQ_EI
1934 Includes a loader for loading an elf relocatable object
1935 onto another VPE and running it.
1937 config MIPS_MT_SMTC_IM_BACKSTOP
1938 bool "Use per-TC register bits as backstop for inhibited IM bits"
1939 depends on MIPS_MT_SMTC
1942 To support multiple TC microthreads acting as "CPUs" within
1943 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1944 during interrupt handling. To support legacy drivers and interrupt
1945 controller management code, SMTC has a "backstop" to track and
1946 if necessary restore the interrupt mask. This has some performance
1947 impact on interrupt service overhead.
1949 config MIPS_MT_SMTC_IRQAFF
1950 bool "Support IRQ affinity API"
1951 depends on MIPS_MT_SMTC
1954 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1955 for SMTC Linux kernel. Requires platform support, of which
1956 an example can be found in the MIPS kernel i8259 and Malta
1957 platform code. Adds some overhead to interrupt dispatch, and
1958 should be used only if you know what you are doing.
1960 config MIPS_VPE_LOADER_TOM
1961 bool "Load VPE program into memory hidden from linux"
1962 depends on MIPS_VPE_LOADER
1965 The loader can use memory that is present but has been hidden from
1966 Linux using the kernel command line option "mem=xxMB". It's up to
1967 you to ensure the amount you put in the option and the space your
1968 program requires is less or equal to the amount physically present.
1970 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1971 config MIPS_VPE_APSP_API
1972 bool "Enable support for AP/SP API (RTLX)"
1973 depends on MIPS_VPE_LOADER
1976 config MIPS_APSP_KSPD
1978 depends on MIPS_VPE_APSP_API
1981 KSPD is a kernel daemon that accepts syscall requests from the SP
1982 side, actions them and returns the results. It also handles the
1983 "exit" syscall notifying other kernel modules the SP program is
1984 exiting. You probably want to say yes here.
1987 bool "MIPS CMP framework support"
1988 depends on SYS_SUPPORTS_MIPS_CMP
1990 select SYS_SUPPORTS_SMP
1991 select SYS_SUPPORTS_SCHED_SMT if SMP
1992 select WEAK_ORDERING
1995 This is a placeholder option for the GCMP work. It will need to
1996 be handled differently...
1998 config SB1_PASS_1_WORKAROUNDS
2000 depends on CPU_SB1_PASS_1
2003 config SB1_PASS_2_WORKAROUNDS
2005 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2008 config SB1_PASS_2_1_WORKAROUNDS
2010 depends on CPU_SB1 && CPU_SB1_PASS_2
2013 config 64BIT_PHYS_ADDR
2016 config ARCH_PHYS_ADDR_T_64BIT
2017 def_bool 64BIT_PHYS_ADDR
2019 config CPU_HAS_SMARTMIPS
2020 depends on SYS_SUPPORTS_SMARTMIPS
2021 bool "Support for the SmartMIPS ASE"
2023 SmartMIPS is a extension of the MIPS32 architecture aimed at
2024 increased security at both hardware and software level for
2025 smartcards. Enabling this option will allow proper use of the
2026 SmartMIPS instructions by Linux applications. However a kernel with
2027 this option will not work on a MIPS core without SmartMIPS core. If
2028 you don't know you probably don't have SmartMIPS and should say N
2038 # Vectored interrupt mode is an R2 feature
2040 config CPU_MIPSR2_IRQ_VI
2044 # Extended interrupt mode is an R2 feature
2046 config CPU_MIPSR2_IRQ_EI
2051 depends on !CPU_R3000
2057 config CPU_DADDI_WORKAROUNDS
2060 config CPU_R4000_WORKAROUNDS
2062 select CPU_R4400_WORKAROUNDS
2064 config CPU_R4400_WORKAROUNDS
2068 # - Highmem only makes sense for the 32-bit kernel.
2069 # - The current highmem code will only work properly on physically indexed
2070 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2071 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2072 # moment we protect the user and offer the highmem option only on machines
2073 # where it's known to be safe. This will not offer highmem on a few systems
2074 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2075 # indexed CPUs but we're playing safe.
2076 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2077 # know they might have memory configurations that could make use of highmem
2081 bool "High Memory Support"
2082 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2084 config CPU_SUPPORTS_HIGHMEM
2087 config SYS_SUPPORTS_HIGHMEM
2090 config SYS_SUPPORTS_SMARTMIPS
2093 config ARCH_FLATMEM_ENABLE
2095 depends on !NUMA && !CPU_LOONGSON2
2097 config ARCH_DISCONTIGMEM_ENABLE
2099 default y if SGI_IP27
2101 Say Y to support efficient handling of discontiguous physical memory,
2102 for architectures which are either NUMA (Non-Uniform Memory Access)
2103 or have huge holes in the physical address space for other reasons.
2104 See <file:Documentation/vm/numa> for more.
2106 config ARCH_SPARSEMEM_ENABLE
2108 select SPARSEMEM_STATIC
2112 depends on SYS_SUPPORTS_NUMA
2114 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2115 Access). This option improves performance on systems with more
2116 than two nodes; on two node systems it is generally better to
2117 leave it disabled; on single node systems disable this option
2120 config SYS_SUPPORTS_NUMA
2126 depends on NEED_MULTIPLE_NODES
2128 config HW_PERF_EVENTS
2129 bool "Enable hardware performance counter support for perf events"
2130 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2133 Enable hardware performance counter support for perf events. If
2134 disabled, perf events will use software events only.
2139 bool "Multi-Processing support"
2140 depends on SYS_SUPPORTS_SMP
2142 select USE_GENERIC_SMP_HELPERS
2144 This enables support for systems with more than one CPU. If you have
2145 a system with only one CPU, like most personal computers, say N. If
2146 you have a system with more than one CPU, say Y.
2148 If you say N here, the kernel will run on single and multiprocessor
2149 machines, but will use only one CPU of a multiprocessor machine. If
2150 you say Y here, the kernel will run on many, but not all,
2151 singleprocessor machines. On a singleprocessor machine, the kernel
2152 will run faster if you say N here.
2154 People using multiprocessor machines who say Y here should also say
2155 Y to "Enhanced Real Time Clock Support", below.
2157 See also the SMP-HOWTO available at
2158 <http://www.tldp.org/docs.html#howto>.
2160 If you don't know what to do here, say N.
2165 config SYS_SUPPORTS_MIPS_CMP
2168 config SYS_SUPPORTS_SMP
2171 config NR_CPUS_DEFAULT_1
2174 config NR_CPUS_DEFAULT_2
2177 config NR_CPUS_DEFAULT_4
2180 config NR_CPUS_DEFAULT_8
2183 config NR_CPUS_DEFAULT_16
2186 config NR_CPUS_DEFAULT_32
2189 config NR_CPUS_DEFAULT_64
2193 int "Maximum number of CPUs (2-64)"
2194 range 1 64 if NR_CPUS_DEFAULT_1
2196 default "1" if NR_CPUS_DEFAULT_1
2197 default "2" if NR_CPUS_DEFAULT_2
2198 default "4" if NR_CPUS_DEFAULT_4
2199 default "8" if NR_CPUS_DEFAULT_8
2200 default "16" if NR_CPUS_DEFAULT_16
2201 default "32" if NR_CPUS_DEFAULT_32
2202 default "64" if NR_CPUS_DEFAULT_64
2204 This allows you to specify the maximum number of CPUs which this
2205 kernel will support. The maximum supported value is 32 for 32-bit
2206 kernel and 64 for 64-bit kernels; the minimum value which makes
2207 sense is 1 for Qemu (useful only for kernel debugging purposes)
2208 and 2 for all others.
2210 This is purely to save memory - each supported CPU adds
2211 approximately eight kilobytes to the kernel image. For best
2212 performance should round up your number of processors to the next
2216 # Timer Interrupt Frequency Configuration
2220 prompt "Timer frequency"
2223 Allows the configuration of the timer frequency.
2226 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2229 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2232 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2235 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2244 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2248 config SYS_SUPPORTS_48HZ
2251 config SYS_SUPPORTS_100HZ
2254 config SYS_SUPPORTS_128HZ
2257 config SYS_SUPPORTS_250HZ
2260 config SYS_SUPPORTS_256HZ
2263 config SYS_SUPPORTS_1000HZ
2266 config SYS_SUPPORTS_1024HZ
2269 config SYS_SUPPORTS_ARBIT_HZ
2271 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2272 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2273 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2274 !SYS_SUPPORTS_1024HZ
2279 default 100 if HZ_100
2280 default 128 if HZ_128
2281 default 250 if HZ_250
2282 default 256 if HZ_256
2283 default 1000 if HZ_1000
2284 default 1024 if HZ_1024
2286 source "kernel/Kconfig.preempt"
2289 bool "Kexec system call (EXPERIMENTAL)"
2290 depends on EXPERIMENTAL
2292 kexec is a system call that implements the ability to shutdown your
2293 current kernel, and to start another kernel. It is like a reboot
2294 but it is independent of the system firmware. And like a reboot
2295 you can start any kernel with it, not just Linux.
2297 The name comes from the similarity to the exec system call.
2299 It is an ongoing process to be certain the hardware in a machine
2300 is properly shutdown, so do not be surprised if this code does not
2301 initially work for you. It may help to enable device hotplugging
2302 support. As of this writing the exact hardware interface is
2303 strongly in flux, so no good recommendation can be made.
2306 bool "Enable seccomp to safely compute untrusted bytecode"
2310 This kernel feature is useful for number crunching applications
2311 that may need to compute untrusted bytecode during their
2312 execution. By using pipes or other transports made available to
2313 the process as file descriptors supporting the read/write
2314 syscalls, it's possible to isolate those applications in
2315 their own address space using seccomp. Once seccomp is
2316 enabled via /proc/<pid>/seccomp, it cannot be disabled
2317 and the task is only allowed to execute a few safe syscalls
2318 defined by each seccomp mode.
2320 If unsure, say Y. Only embedded should say N here.
2323 bool "Flattened Device Tree support"
2325 select OF_EARLY_FLATTREE
2328 Include support for flattened device tree machine descriptions.
2332 config LOCKDEP_SUPPORT
2336 config STACKTRACE_SUPPORT
2340 source "init/Kconfig"
2342 source "kernel/Kconfig.freezer"
2344 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2352 bool "Support for PCI controller"
2353 depends on HW_HAS_PCI
2355 select GENERIC_PCI_IOMAP
2356 select NO_GENERIC_PCI_IOPORT_MAP
2358 Find out whether you have a PCI motherboard. PCI is the name of a
2359 bus system, i.e. the way the CPU talks to the other stuff inside
2360 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2366 source "drivers/pci/Kconfig"
2369 # ISA support is now enabled via select. Too many systems still have the one
2370 # or other ISA chip on the board that users don't know about so don't expect
2371 # users to choose the right thing ...
2378 depends on HW_HAS_EISA
2380 select GENERIC_ISA_DMA
2382 The Extended Industry Standard Architecture (EISA) bus was
2383 developed as an open alternative to the IBM MicroChannel bus.
2385 The EISA bus provided some of the features of the IBM MicroChannel
2386 bus while maintaining backward compatibility with cards made for
2387 the older ISA bus. The EISA bus saw limited use between 1988 and
2388 1995 when it was made obsolete by the PCI bus.
2390 Say Y here if you are building a kernel for an EISA-based machine.
2394 source "drivers/eisa/Kconfig"
2397 bool "TURBOchannel support"
2398 depends on MACH_DECSTATION
2400 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2401 processors. TURBOchannel programming specifications are available
2403 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2405 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2406 Linux driver support status is documented at:
2407 <http://www.linux-mips.org/wiki/DECstation>
2417 select MIPS_EXTERNAL_TIMER
2422 source "drivers/pcmcia/Kconfig"
2424 source "drivers/pci/hotplug/Kconfig"
2427 bool "RapidIO support"
2431 If you say Y here, the kernel will include drivers and
2432 infrastructure code to support RapidIO interconnect devices.
2434 source "drivers/rapidio/Kconfig"
2438 menu "Executable file formats"
2440 source "fs/Kconfig.binfmt"
2445 config MIPS32_COMPAT
2446 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2449 Select this option if you want Linux/MIPS 32-bit binary
2450 compatibility. Since all software available for Linux/MIPS is
2451 currently 32-bit you should say Y here.
2455 depends on MIPS32_COMPAT
2456 select ARCH_WANT_OLD_COMPAT_IPC
2459 config SYSVIPC_COMPAT
2461 depends on COMPAT && SYSVIPC
2465 bool "Kernel support for o32 binaries"
2466 depends on MIPS32_COMPAT
2468 Select this option if you want to run o32 binaries. These are pure
2469 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2470 existing binaries are in this format.
2475 bool "Kernel support for n32 binaries"
2476 depends on MIPS32_COMPAT
2478 Select this option if you want to run n32 binaries. These are
2479 64-bit binaries using 32-bit quantities for addressing and certain
2480 data that would normally be 64-bit. They are used in special
2487 default y if MIPS32_O32 || MIPS32_N32
2491 menu "Power management options"
2493 config ARCH_HIBERNATION_POSSIBLE
2495 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2497 config ARCH_SUSPEND_POSSIBLE
2499 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2501 source "kernel/power/Kconfig"
2505 source "arch/mips/kernel/cpufreq/Kconfig"
2507 source "net/Kconfig"
2509 source "drivers/Kconfig"
2513 source "arch/mips/Kconfig.debug"
2515 source "security/Kconfig"
2517 source "crypto/Kconfig"
2519 source "lib/Kconfig"