4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
20 select RTC_LIB if !MACH_LOONGSON
21 select GENERIC_ATOMIC64 if !64BIT
23 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_HARDIRQS
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select HAVE_ARCH_JUMP_LABEL
28 select IRQ_FORCED_THREADING
30 select HAVE_MEMBLOCK_NODE_MAP
31 select ARCH_DISCARD_MEMBLOCK
32 select GENERIC_SMP_IDLE_THREAD
33 select BUILDTIME_EXTABLE_SORT
35 menu "Machine selection"
45 bool "Alchemy processor based machines"
46 select 64BIT_PHYS_ADDR
50 select SYS_HAS_CPU_MIPS32_R1
51 select SYS_SUPPORTS_32BIT_KERNEL
52 select SYS_SUPPORTS_APM_EMULATION
54 select ARCH_WANT_OPTIONAL_GPIOLIB
55 select SYS_SUPPORTS_ZBOOT
56 select USB_ARCH_HAS_OHCI
57 select USB_ARCH_HAS_EHCI
60 bool "Texas Instruments AR7"
62 select DMA_NONCOHERENT
68 select SYS_HAS_CPU_MIPS32_R1
69 select SYS_HAS_EARLY_PRINTK
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_LITTLE_ENDIAN
72 select SYS_SUPPORTS_ZBOOT_UART16550
73 select ARCH_REQUIRE_GPIOLIB
76 Support for the Texas Instruments AR7 System-on-a-Chip
77 family: TNETD7100, 7200 and 7300.
80 bool "Atheros AR71XX/AR724X/AR913X based boards"
81 select ARCH_REQUIRE_GPIOLIB
85 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R2
89 select SYS_HAS_EARLY_PRINTK
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_BIG_ENDIAN
93 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
96 bool "Broadcom BCM47XX based boards"
99 select DMA_NONCOHERENT
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_LITTLE_ENDIAN
105 select SYS_HAS_EARLY_PRINTK
108 Support for BCM47XX based boards
111 bool "Broadcom BCM63XX based boards"
114 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_HAS_EARLY_PRINTK
121 select ARCH_REQUIRE_GPIOLIB
123 Support for BCM63XX based boards
130 select DMA_NONCOHERENT
136 select PCI_GT64XXX_PCI0
138 select SYS_HAS_CPU_NEVADA
139 select SYS_HAS_EARLY_PRINTK
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_64BIT_KERNEL
142 select SYS_SUPPORTS_LITTLE_ENDIAN
144 config MACH_DECSTATION
151 select CPU_DADDI_WORKAROUNDS if 64BIT
152 select CPU_R4000_WORKAROUNDS if 64BIT
153 select CPU_R4400_WORKAROUNDS if 64BIT
154 select DMA_NONCOHERENT
157 select SYS_HAS_CPU_R3000
158 select SYS_HAS_CPU_R4X00
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_128HZ
163 select SYS_SUPPORTS_256HZ
164 select SYS_SUPPORTS_1024HZ
166 This enables support for DEC's MIPS based workstations. For details
167 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
168 DECstation porting pages on <http://decstation.unix-ag.org/>.
170 If you have one of the following DECstation Models you definitely
171 want to choose R4xx0 for the CPU Type:
178 otherwise choose R3000.
181 bool "Jazz family of machines"
184 select ARCH_MAY_HAVE_PC_FDC
187 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
188 select GENERIC_ISA_DMA
189 select HAVE_PCSPKR_PLATFORM
194 select SYS_HAS_CPU_R4X00
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
197 select SYS_SUPPORTS_100HZ
199 This a family of machines based on the MIPS R4030 chipset which was
200 used by several vendors to build RISC/os and Windows NT workstations.
201 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
202 Olivetti M700-10 workstations.
205 bool "Ingenic JZ4740 based machines"
206 select SYS_HAS_CPU_MIPS32_R1
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_LITTLE_ENDIAN
209 select DMA_NONCOHERENT
212 select ARCH_REQUIRE_GPIOLIB
213 select SYS_HAS_EARLY_PRINTK
216 select GENERIC_IRQ_CHIP
219 bool "Lantiq based platforms"
220 select DMA_NONCOHERENT
224 select SYS_HAS_CPU_MIPS32_R1
225 select SYS_HAS_CPU_MIPS32_R2
226 select SYS_SUPPORTS_BIG_ENDIAN
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_MULTITHREADING
229 select SYS_HAS_EARLY_PRINTK
230 select ARCH_REQUIRE_GPIOLIB
237 bool "LASAT Networks platforms"
240 select DMA_NONCOHERENT
241 select SYS_HAS_EARLY_PRINTK
244 select PCI_GT64XXX_PCI0
246 select R5000_CPU_SCACHE
247 select SYS_HAS_CPU_R5000
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
250 select SYS_SUPPORTS_LITTLE_ENDIAN
253 bool "Loongson family of machines"
254 select SYS_SUPPORTS_ZBOOT
256 This enables the support of Loongson family of machines.
258 Loongson is a family of general-purpose MIPS-compatible CPUs.
259 developed at Institute of Computing Technology (ICT),
260 Chinese Academy of Sciences (CAS) in the People's Republic
261 of China. The chief architect is Professor Weiwu Hu.
264 bool "MIPS Malta board"
265 select ARCH_MAY_HAVE_PC_FDC
270 select DMA_NONCOHERENT
271 select GENERIC_ISA_DMA
272 select HAVE_PCSPKR_PLATFORM
278 select MIPS_BOARDS_GEN
280 select MIPS_CPU_SCACHE
281 select PCI_GT64XXX_PCI0
284 select SYS_HAS_CPU_MIPS32_R1
285 select SYS_HAS_CPU_MIPS32_R2
286 select SYS_HAS_CPU_MIPS64_R1
287 select SYS_HAS_CPU_NEVADA
288 select SYS_HAS_CPU_RM7000
289 select SYS_HAS_EARLY_PRINTK
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_64BIT_KERNEL
292 select SYS_SUPPORTS_BIG_ENDIAN
293 select SYS_SUPPORTS_LITTLE_ENDIAN
294 select SYS_SUPPORTS_MIPS_CMP
295 select SYS_SUPPORTS_MULTITHREADING
296 select SYS_SUPPORTS_SMARTMIPS
297 select SYS_SUPPORTS_ZBOOT
299 This enables support for the MIPS Technologies Malta evaluation
303 bool 'MIPS simulator (MIPSsim)'
306 select DMA_NONCOHERENT
307 select SYS_HAS_EARLY_PRINTK
310 select SYS_HAS_CPU_MIPS32_R1
311 select SYS_HAS_CPU_MIPS32_R2
312 select SYS_HAS_EARLY_PRINTK
313 select SYS_SUPPORTS_32BIT_KERNEL
314 select SYS_SUPPORTS_BIG_ENDIAN
315 select SYS_SUPPORTS_MULTITHREADING
316 select SYS_SUPPORTS_LITTLE_ENDIAN
318 This option enables support for MIPS Technologies MIPSsim software
322 bool "NEC EMMA2RH Mark-eins board"
326 This enables support for the NEC Electronics Mark-eins boards.
329 bool "NEC VR4100 series based machines"
332 select SYS_HAS_CPU_VR41XX
333 select ARCH_REQUIRE_GPIOLIB
336 bool "NXP STB220 board"
339 Support for NXP Semiconductors STB220 Development Board.
346 Support for NXP Semiconductors STB225 Development Board.
349 bool "NXP PNX8550 based JBS board"
351 select SYS_SUPPORTS_LITTLE_ENDIAN
353 config PNX8550_STB810
354 bool "NXP PNX8550 based STB810 board"
356 select SYS_SUPPORTS_LITTLE_ENDIAN
359 bool "PMC-Sierra MSP chipsets"
360 depends on EXPERIMENTAL
363 select DMA_NONCOHERENT
365 select NO_EXCEPT_FILL
367 select SYS_HAS_CPU_MIPS32_R1
368 select SYS_HAS_CPU_MIPS32_R2
369 select SYS_SUPPORTS_32BIT_KERNEL
370 select SYS_SUPPORTS_BIG_ENDIAN
373 select SERIAL_8250_CONSOLE
375 This adds support for the PMC-Sierra family of Multi-Service
376 Processor System-On-A-Chips. These parts include a number
377 of integrated peripherals, interfaces and DSPs in addition to
378 a variety of MIPS cores.
381 bool "PMC-Sierra Yosemite eval board"
390 select SYS_HAS_CPU_RM9000
391 select SYS_HAS_EARLY_PRINTK
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_64BIT_KERNEL
394 select SYS_SUPPORTS_BIG_ENDIAN
395 select SYS_SUPPORTS_HIGHMEM
396 select SYS_SUPPORTS_SMP
398 Yosemite is an evaluation board for the RM9000x2 processor
399 manufactured by PMC-Sierra.
405 select CPU_MIPSR2_IRQ_VI
406 select CPU_MIPSR2_IRQ_EI
408 select DMA_NONCOHERENT
410 select SYS_HAS_EARLY_PRINTK
411 select SYS_HAS_CPU_MIPS32_R2
412 select SYS_SUPPORTS_32BIT_KERNEL
413 select SYS_SUPPORTS_BIG_ENDIAN
414 select SYS_SUPPORTS_HIGHMEM
415 select USB_OHCI_LITTLE_ENDIAN
417 This enables support for the Cisco PowerTV Platform.
420 bool "SGI IP22 (Indy/Indigo2)"
426 select DEFAULT_SGI_PARTITION
427 select DMA_NONCOHERENT
431 select IP22_CPU_SCACHE
433 select GENERIC_ISA_DMA_SUPPORT_BROKEN
435 select SGI_HAS_INDYDOG
441 select SYS_HAS_CPU_R4X00
442 select SYS_HAS_CPU_R5000
444 # Disable EARLY_PRINTK for now since it leads to overwritten prom
445 # memory during early boot on some machines.
447 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
448 # for a more details discussion
450 # select SYS_HAS_EARLY_PRINTK
451 select SYS_SUPPORTS_32BIT_KERNEL
452 select SYS_SUPPORTS_64BIT_KERNEL
453 select SYS_SUPPORTS_BIG_ENDIAN
455 This are the SGI Indy, Challenge S and Indigo2, as well as certain
456 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
457 that runs on these, say Y here.
460 bool "SGI IP27 (Origin200/2000)"
464 select DEFAULT_SGI_PARTITION
466 select SYS_HAS_EARLY_PRINTK
468 select NR_CPUS_DEFAULT_64
469 select SYS_HAS_CPU_R10000
470 select SYS_SUPPORTS_64BIT_KERNEL
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_NUMA
473 select SYS_SUPPORTS_SMP
475 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
476 workstations. To compile a Linux kernel that runs on these, say Y
480 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
481 depends on EXPERIMENTAL
487 select DEFAULT_SGI_PARTITION
488 select DMA_NONCOHERENT
489 select GENERIC_ISA_DMA_SUPPORT_BROKEN
495 select SGI_HAS_INDYDOG
501 select SYS_HAS_CPU_R10000
503 # Disable EARLY_PRINTK for now since it leads to overwritten prom
504 # memory during early boot on some machines.
506 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
507 # for a more details discussion
509 # select SYS_HAS_EARLY_PRINTK
510 select SYS_SUPPORTS_64BIT_KERNEL
511 select SYS_SUPPORTS_BIG_ENDIAN
513 This is the SGI Indigo2 with R10000 processor. To compile a Linux
514 kernel that runs on these, say Y here.
523 select DMA_NONCOHERENT
526 select R5000_CPU_SCACHE
527 select RM7000_CPU_SCACHE
528 select SYS_HAS_CPU_R5000
529 select SYS_HAS_CPU_R10000 if BROKEN
530 select SYS_HAS_CPU_RM7000
531 select SYS_HAS_CPU_NEVADA
532 select SYS_SUPPORTS_64BIT_KERNEL
533 select SYS_SUPPORTS_BIG_ENDIAN
535 If you want this kernel to run on SGI O2 workstation, say Y here.
538 bool "Sibyte BCM91120C-CRhine"
539 depends on EXPERIMENTAL
542 select SIBYTE_BCM1120
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_LITTLE_ENDIAN
549 bool "Sibyte BCM91120x-Carmel"
550 depends on EXPERIMENTAL
553 select SIBYTE_BCM1120
555 select SYS_HAS_CPU_SB1
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_LITTLE_ENDIAN
560 bool "Sibyte BCM91125C-CRhone"
561 depends on EXPERIMENTAL
564 select SIBYTE_BCM1125
566 select SYS_HAS_CPU_SB1
567 select SYS_SUPPORTS_BIG_ENDIAN
568 select SYS_SUPPORTS_HIGHMEM
569 select SYS_SUPPORTS_LITTLE_ENDIAN
572 bool "Sibyte BCM91125E-Rhone"
573 depends on EXPERIMENTAL
576 select SIBYTE_BCM1125H
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_LITTLE_ENDIAN
583 bool "Sibyte BCM91250A-SWARM"
586 select HAVE_PATA_PLATFORM
587 select NR_CPUS_DEFAULT_2
590 select SYS_HAS_CPU_SB1
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_HIGHMEM
593 select SYS_SUPPORTS_LITTLE_ENDIAN
594 select ZONE_DMA32 if 64BIT
596 config SIBYTE_LITTLESUR
597 bool "Sibyte BCM91250C2-LittleSur"
598 depends on EXPERIMENTAL
601 select HAVE_PATA_PLATFORM
602 select NR_CPUS_DEFAULT_2
605 select SYS_HAS_CPU_SB1
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select SYS_SUPPORTS_HIGHMEM
608 select SYS_SUPPORTS_LITTLE_ENDIAN
610 config SIBYTE_SENTOSA
611 bool "Sibyte BCM91250E-Sentosa"
612 depends on EXPERIMENTAL
615 select NR_CPUS_DEFAULT_2
618 select SYS_HAS_CPU_SB1
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select SYS_SUPPORTS_LITTLE_ENDIAN
623 bool "Sibyte BCM91480B-BigSur"
626 select NR_CPUS_DEFAULT_4
627 select SIBYTE_BCM1x80
629 select SYS_HAS_CPU_SB1
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select SYS_SUPPORTS_HIGHMEM
632 select SYS_SUPPORTS_LITTLE_ENDIAN
633 select ZONE_DMA32 if 64BIT
636 bool "SNI RM200/300/400"
637 select ARC if CPU_LITTLE_ENDIAN
638 select ARC32 if CPU_LITTLE_ENDIAN
639 select SNIPROM if CPU_BIG_ENDIAN
640 select ARCH_MAY_HAVE_PC_FDC
644 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
645 select DMA_NONCOHERENT
646 select GENERIC_ISA_DMA
647 select HAVE_PCSPKR_PLATFORM
654 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
655 select SYS_HAS_CPU_R4X00
656 select SYS_HAS_CPU_R5000
657 select SYS_HAS_CPU_R10000
658 select R5000_CPU_SCACHE
659 select SYS_HAS_EARLY_PRINTK
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select SYS_SUPPORTS_HIGHMEM
664 select SYS_SUPPORTS_LITTLE_ENDIAN
666 The SNI RM200/300/400 are MIPS-based machines manufactured by
667 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
668 Technology and now in turn merged with Fujitsu. Say Y here to
669 support this machine type.
672 bool "Toshiba TX39 series based machines"
675 bool "Toshiba TX49 series based machines"
677 config MIKROTIK_RB532
678 bool "Mikrotik RB532 boards"
681 select DMA_NONCOHERENT
684 select SYS_HAS_CPU_MIPS32_R1
685 select SYS_SUPPORTS_32BIT_KERNEL
686 select SYS_SUPPORTS_LITTLE_ENDIAN
689 select ARCH_REQUIRE_GPIOLIB
691 Support the Mikrotik(tm) RouterBoard 532 series,
692 based on the IDT RC32434 SoC.
695 bool "Wind River PPMC board"
700 select DMA_NONCOHERENT
702 select PCI_GT64XXX_PCI0
704 select SYS_HAS_CPU_MIPS32_R1
705 select SYS_HAS_CPU_MIPS32_R2
706 select SYS_HAS_CPU_MIPS64_R1
707 select SYS_HAS_CPU_NEVADA
708 select SYS_HAS_CPU_RM7000
709 select SYS_SUPPORTS_32BIT_KERNEL
710 select SYS_SUPPORTS_64BIT_KERNEL
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select SYS_SUPPORTS_LITTLE_ENDIAN
714 This enables support for the Wind River MIPS32 4KC PPMC evaluation
715 board, which is based on GT64120 bridge chip.
717 config CAVIUM_OCTEON_SIMULATOR
718 bool "Cavium Networks Octeon Simulator"
720 select 64BIT_PHYS_ADDR
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_HOTPLUG_CPU
725 select SYS_HAS_CPU_CAVIUM_OCTEON
728 The Octeon simulator is software performance model of the Cavium
729 Octeon Processor. It supports simulating Octeon processors on x86
732 config CAVIUM_OCTEON_REFERENCE_BOARD
733 bool "Cavium Networks Octeon reference board"
735 select 64BIT_PHYS_ADDR
737 select SYS_SUPPORTS_64BIT_KERNEL
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_HOTPLUG_CPU
740 select SYS_HAS_EARLY_PRINTK
741 select SYS_HAS_CPU_CAVIUM_OCTEON
744 select ARCH_SUPPORTS_MSI
746 select USB_ARCH_HAS_OHCI
747 select USB_ARCH_HAS_EHCI
750 This option supports all of the Octeon reference boards from Cavium
751 Networks. It builds a kernel that dynamically determines the Octeon
752 CPU type and supports all known board reference implementations.
753 Some of the supported boards are:
760 Say Y here for most Octeon reference boards.
763 bool "Netlogic XLR/XLS based systems"
764 depends on EXPERIMENTAL
767 select SYS_HAS_CPU_XLR
768 select SYS_SUPPORTS_SMP
771 select SYS_SUPPORTS_32BIT_KERNEL
772 select SYS_SUPPORTS_64BIT_KERNEL
773 select 64BIT_PHYS_ADDR
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
777 select NR_CPUS_DEFAULT_32
781 select ARCH_SUPPORTS_MSI
782 select ZONE_DMA if 64BIT
784 select SYS_HAS_EARLY_PRINTK
786 Support for systems based on Netlogic XLR and XLS processors.
787 Say Y here if you have a XLR or XLS based board.
790 bool "Netlogic XLP based systems"
791 depends on EXPERIMENTAL
794 select SYS_HAS_CPU_XLP
795 select SYS_SUPPORTS_SMP
798 select SYS_SUPPORTS_32BIT_KERNEL
799 select SYS_SUPPORTS_64BIT_KERNEL
800 select 64BIT_PHYS_ADDR
801 select SYS_SUPPORTS_BIG_ENDIAN
802 select SYS_SUPPORTS_LITTLE_ENDIAN
803 select SYS_SUPPORTS_HIGHMEM
805 select NR_CPUS_DEFAULT_32
809 select ZONE_DMA if 64BIT
811 select SYS_HAS_EARLY_PRINTK
813 This board is based on Netlogic XLP Processor.
814 Say Y here if you have a XLP based board.
818 source "arch/mips/alchemy/Kconfig"
819 source "arch/mips/ath79/Kconfig"
820 source "arch/mips/bcm47xx/Kconfig"
821 source "arch/mips/bcm63xx/Kconfig"
822 source "arch/mips/jazz/Kconfig"
823 source "arch/mips/jz4740/Kconfig"
824 source "arch/mips/lantiq/Kconfig"
825 source "arch/mips/lasat/Kconfig"
826 source "arch/mips/pmc-sierra/Kconfig"
827 source "arch/mips/powertv/Kconfig"
828 source "arch/mips/sgi-ip27/Kconfig"
829 source "arch/mips/sibyte/Kconfig"
830 source "arch/mips/txx9/Kconfig"
831 source "arch/mips/vr41xx/Kconfig"
832 source "arch/mips/cavium-octeon/Kconfig"
833 source "arch/mips/loongson/Kconfig"
834 source "arch/mips/netlogic/Kconfig"
838 config RWSEM_GENERIC_SPINLOCK
842 config RWSEM_XCHGADD_ALGORITHM
845 config ARCH_HAS_ILOG2_U32
849 config ARCH_HAS_ILOG2_U64
853 config GENERIC_HWEIGHT
857 config GENERIC_CALIBRATE_DELAY
861 config GENERIC_CLOCKEVENTS
865 config GENERIC_CMOS_UPDATE
869 config SCHED_OMIT_FRAME_POINTER
874 # Select some configuration options automatically based on user selections.
879 config ARCH_MAY_HAVE_PC_FDC
928 select ARCH_REQUIRE_GPIOLIB
934 config ARCH_DMA_ADDR_T_64BIT
935 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
940 config DMA_NONCOHERENT
942 select NEED_DMA_MAP_STATE
944 config NEED_DMA_MAP_STATE
947 config SYS_HAS_EARLY_PRINTK
951 bool "Support for hot-pluggable CPUs"
952 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
954 Say Y here to allow turning CPUs off and on. CPUs can be
955 controlled through /sys/devices/system/cpu.
956 (Note: power management support will enable this option
957 automatically on SMP systems. )
958 Say N if you want to disable CPU hotplug.
960 config SYS_SUPPORTS_HOTPLUG_CPU
975 config MIPS_DISABLE_OBSOLETE_IDE
987 config GENERIC_ISA_DMA
989 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
992 config GENERIC_ISA_DMA_SUPPORT_BROKEN
994 select GENERIC_ISA_DMA
1002 config HOLES_IN_ZONE
1006 # Endianness selection. Sufficiently obscure so many users don't know what to
1007 # answer,so we try hard to limit the available choices. Also the use of a
1008 # choice statement should be more obvious to the user.
1011 prompt "Endianness selection"
1013 Some MIPS machines can be configured for either little or big endian
1014 byte order. These modes require different kernels and a different
1015 Linux distribution. In general there is one preferred byteorder for a
1016 particular system but some systems are just as commonly used in the
1017 one or the other endianness.
1019 config CPU_BIG_ENDIAN
1021 depends on SYS_SUPPORTS_BIG_ENDIAN
1023 config CPU_LITTLE_ENDIAN
1024 bool "Little endian"
1025 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1033 config SYS_SUPPORTS_APM_EMULATION
1036 config SYS_SUPPORTS_BIG_ENDIAN
1039 config SYS_SUPPORTS_LITTLE_ENDIAN
1042 config SYS_SUPPORTS_HUGETLBFS
1044 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1071 config MIPS_BOARDS_GEN
1074 config PCI_GT64XXX_PCI0
1077 config NO_EXCEPT_FILL
1082 select SERIAL_RM9000
1088 select DMA_NONCOHERENT
1090 select SWAP_IO_SPACE
1091 select SYS_HAS_CPU_R5500
1092 select SYS_SUPPORTS_32BIT_KERNEL
1093 select SYS_SUPPORTS_64BIT_KERNEL
1094 select SYS_SUPPORTS_BIG_ENDIAN
1101 select DMA_NONCOHERENT
1102 select SYS_HAS_CPU_MIPS32_R2
1103 select SYS_SUPPORTS_32BIT_KERNEL
1104 select SYS_SUPPORTS_LITTLE_ENDIAN
1105 select SYS_SUPPORTS_BIG_ENDIAN
1107 select CPU_MIPSR2_IRQ_VI
1119 select DMA_NONCOHERENT
1121 select SYS_HAS_CPU_MIPS32_R1
1122 select SYS_HAS_EARLY_PRINTK
1123 select SYS_SUPPORTS_32BIT_KERNEL
1126 config SWAP_IO_SPACE
1129 config SERIAL_RM9000
1132 config SGI_HAS_INDYDOG
1144 config SGI_HAS_ZILOG
1147 config SGI_HAS_I8042
1150 config DEFAULT_SGI_PARTITION
1162 config MIPS_L1_CACHE_SHIFT
1164 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1165 default "6" if MIPS_CPU_SCACHE
1166 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1169 config HAVE_STD_PC_SERIAL_PORT
1173 bool "ARC console support"
1174 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1178 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1183 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1192 menu "CPU selection"
1198 config CPU_LOONGSON2E
1200 depends on SYS_HAS_CPU_LOONGSON2E
1201 select CPU_LOONGSON2
1203 The Loongson 2E processor implements the MIPS III instruction set
1204 with many extensions.
1206 It has an internal FPGA northbridge, which is compatible to
1209 config CPU_LOONGSON2F
1211 depends on SYS_HAS_CPU_LOONGSON2F
1212 select CPU_LOONGSON2
1214 select ARCH_REQUIRE_GPIOLIB
1216 The Loongson 2F processor implements the MIPS III instruction set
1217 with many extensions.
1219 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1220 have a similar programming interface with FPGA northbridge used in
1223 config CPU_MIPS32_R1
1224 bool "MIPS32 Release 1"
1225 depends on SYS_HAS_CPU_MIPS32_R1
1226 select CPU_HAS_PREFETCH
1227 select CPU_SUPPORTS_32BIT_KERNEL
1228 select CPU_SUPPORTS_HIGHMEM
1230 Choose this option to build a kernel for release 1 or later of the
1231 MIPS32 architecture. Most modern embedded systems with a 32-bit
1232 MIPS processor are based on a MIPS32 processor. If you know the
1233 specific type of processor in your system, choose those that one
1234 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1235 Release 2 of the MIPS32 architecture is available since several
1236 years so chances are you even have a MIPS32 Release 2 processor
1237 in which case you should choose CPU_MIPS32_R2 instead for better
1240 config CPU_MIPS32_R2
1241 bool "MIPS32 Release 2"
1242 depends on SYS_HAS_CPU_MIPS32_R2
1243 select CPU_HAS_PREFETCH
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_HIGHMEM
1247 Choose this option to build a kernel for release 2 or later of the
1248 MIPS32 architecture. Most modern embedded systems with a 32-bit
1249 MIPS processor are based on a MIPS32 processor. If you know the
1250 specific type of processor in your system, choose those that one
1251 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1253 config CPU_MIPS64_R1
1254 bool "MIPS64 Release 1"
1255 depends on SYS_HAS_CPU_MIPS64_R1
1256 select CPU_HAS_PREFETCH
1257 select CPU_SUPPORTS_32BIT_KERNEL
1258 select CPU_SUPPORTS_64BIT_KERNEL
1259 select CPU_SUPPORTS_HIGHMEM
1260 select CPU_SUPPORTS_HUGEPAGES
1262 Choose this option to build a kernel for release 1 or later of the
1263 MIPS64 architecture. Many modern embedded systems with a 64-bit
1264 MIPS processor are based on a MIPS64 processor. If you know the
1265 specific type of processor in your system, choose those that one
1266 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1267 Release 2 of the MIPS64 architecture is available since several
1268 years so chances are you even have a MIPS64 Release 2 processor
1269 in which case you should choose CPU_MIPS64_R2 instead for better
1272 config CPU_MIPS64_R2
1273 bool "MIPS64 Release 2"
1274 depends on SYS_HAS_CPU_MIPS64_R2
1275 select CPU_HAS_PREFETCH
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1278 select CPU_SUPPORTS_HIGHMEM
1279 select CPU_SUPPORTS_HUGEPAGES
1281 Choose this option to build a kernel for release 2 or later of the
1282 MIPS64 architecture. Many modern embedded systems with a 64-bit
1283 MIPS processor are based on a MIPS64 processor. If you know the
1284 specific type of processor in your system, choose those that one
1285 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1289 depends on SYS_HAS_CPU_R3000
1291 select CPU_SUPPORTS_32BIT_KERNEL
1292 select CPU_SUPPORTS_HIGHMEM
1294 Please make sure to pick the right CPU type. Linux/MIPS is not
1295 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1296 *not* work on R4000 machines and vice versa. However, since most
1297 of the supported machines have an R4000 (or similar) CPU, R4x00
1298 might be a safe bet. If the resulting kernel does not work,
1299 try to recompile with R3000.
1303 depends on SYS_HAS_CPU_TX39XX
1304 select CPU_SUPPORTS_32BIT_KERNEL
1308 depends on SYS_HAS_CPU_VR41XX
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1312 The options selects support for the NEC VR4100 series of processors.
1313 Only choose this option if you have one of these processors as a
1314 kernel built with this option will not run on any other type of
1315 processor or vice versa.
1319 depends on SYS_HAS_CPU_R4300
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1323 MIPS Technologies R4300-series processors.
1327 depends on SYS_HAS_CPU_R4X00
1328 select CPU_SUPPORTS_32BIT_KERNEL
1329 select CPU_SUPPORTS_64BIT_KERNEL
1331 MIPS Technologies R4000-series processors other than 4300, including
1332 the R4000, R4400, R4600, and 4700.
1336 depends on SYS_HAS_CPU_TX49XX
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1343 depends on SYS_HAS_CPU_R5000
1344 select CPU_SUPPORTS_32BIT_KERNEL
1345 select CPU_SUPPORTS_64BIT_KERNEL
1347 MIPS Technologies R5000-series processors other than the Nevada.
1351 depends on SYS_HAS_CPU_R5432
1352 select CPU_SUPPORTS_32BIT_KERNEL
1353 select CPU_SUPPORTS_64BIT_KERNEL
1357 depends on SYS_HAS_CPU_R5500
1358 select CPU_SUPPORTS_32BIT_KERNEL
1359 select CPU_SUPPORTS_64BIT_KERNEL
1360 select CPU_SUPPORTS_HUGEPAGES
1362 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1367 depends on EXPERIMENTAL
1368 depends on SYS_HAS_CPU_R6000
1369 select CPU_SUPPORTS_32BIT_KERNEL
1371 MIPS Technologies R6000 and R6000A series processors. Note these
1372 processors are extremely rare and the support for them is incomplete.
1376 depends on SYS_HAS_CPU_NEVADA
1377 select CPU_SUPPORTS_32BIT_KERNEL
1378 select CPU_SUPPORTS_64BIT_KERNEL
1380 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1384 depends on EXPERIMENTAL
1385 depends on SYS_HAS_CPU_R8000
1386 select CPU_HAS_PREFETCH
1387 select CPU_SUPPORTS_64BIT_KERNEL
1389 MIPS Technologies R8000 processors. Note these processors are
1390 uncommon and the support for them is incomplete.
1394 depends on SYS_HAS_CPU_R10000
1395 select CPU_HAS_PREFETCH
1396 select CPU_SUPPORTS_32BIT_KERNEL
1397 select CPU_SUPPORTS_64BIT_KERNEL
1398 select CPU_SUPPORTS_HIGHMEM
1400 MIPS Technologies R10000-series processors.
1404 depends on SYS_HAS_CPU_RM7000
1405 select CPU_HAS_PREFETCH
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_64BIT_KERNEL
1408 select CPU_SUPPORTS_HIGHMEM
1412 depends on SYS_HAS_CPU_RM9000
1413 select CPU_HAS_PREFETCH
1414 select CPU_SUPPORTS_32BIT_KERNEL
1415 select CPU_SUPPORTS_64BIT_KERNEL
1416 select CPU_SUPPORTS_HIGHMEM
1417 select WEAK_ORDERING
1421 depends on SYS_HAS_CPU_SB1
1422 select CPU_SUPPORTS_32BIT_KERNEL
1423 select CPU_SUPPORTS_64BIT_KERNEL
1424 select CPU_SUPPORTS_HIGHMEM
1425 select WEAK_ORDERING
1427 config CPU_CAVIUM_OCTEON
1428 bool "Cavium Octeon processor"
1429 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1430 select CPU_HAS_PREFETCH
1431 select CPU_SUPPORTS_64BIT_KERNEL
1432 select SYS_SUPPORTS_SMP
1433 select NR_CPUS_DEFAULT_16
1434 select WEAK_ORDERING
1435 select CPU_SUPPORTS_HIGHMEM
1436 select CPU_SUPPORTS_HUGEPAGES
1438 The Cavium Octeon processor is a highly integrated chip containing
1439 many ethernet hardware widgets for networking tasks. The processor
1440 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1441 Full details can be found at http://www.caviumnetworks.com.
1443 config CPU_BMIPS3300
1445 depends on SYS_HAS_CPU_BMIPS3300
1448 Broadcom BMIPS3300 processors.
1450 config CPU_BMIPS4350
1452 depends on SYS_HAS_CPU_BMIPS4350
1454 select SYS_SUPPORTS_SMP
1455 select SYS_SUPPORTS_HOTPLUG_CPU
1457 Broadcom BMIPS4350 ("VIPER") processors.
1459 config CPU_BMIPS4380
1461 depends on SYS_HAS_CPU_BMIPS4380
1463 select SYS_SUPPORTS_SMP
1464 select SYS_SUPPORTS_HOTPLUG_CPU
1466 Broadcom BMIPS4380 processors.
1468 config CPU_BMIPS5000
1470 depends on SYS_HAS_CPU_BMIPS5000
1472 select CPU_SUPPORTS_HIGHMEM
1473 select MIPS_CPU_SCACHE
1474 select SYS_SUPPORTS_SMP
1475 select SYS_SUPPORTS_HOTPLUG_CPU
1477 Broadcom BMIPS5000 processors.
1480 bool "Netlogic XLR SoC"
1481 depends on SYS_HAS_CPU_XLR
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_64BIT_KERNEL
1484 select CPU_SUPPORTS_HIGHMEM
1485 select WEAK_ORDERING
1486 select WEAK_REORDERING_BEYOND_LLSC
1487 select CPU_SUPPORTS_HUGEPAGES
1489 Netlogic Microsystems XLR/XLS processors.
1492 bool "Netlogic XLP SoC"
1493 depends on SYS_HAS_CPU_XLP
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1498 select WEAK_ORDERING
1499 select WEAK_REORDERING_BEYOND_LLSC
1500 select CPU_HAS_PREFETCH
1502 Netlogic Microsystems XLP processors.
1506 config CPU_NOP_WORKAROUNDS
1509 config CPU_JUMP_WORKAROUNDS
1512 config CPU_LOONGSON2F_WORKAROUNDS
1513 bool "Loongson 2F Workarounds"
1515 select CPU_NOP_WORKAROUNDS
1516 select CPU_JUMP_WORKAROUNDS
1518 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1519 require workarounds. Without workarounds the system may hang
1520 unexpectedly. For more information please refer to the gas
1521 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1523 Loongson 2F03 and later have fixed these issues and no workarounds
1524 are needed. The workarounds have no significant side effect on them
1525 but may decrease the performance of the system so this option should
1526 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1529 If unsure, please say Y.
1530 endif # CPU_LOONGSON2F
1532 config SYS_SUPPORTS_ZBOOT
1534 select HAVE_KERNEL_GZIP
1535 select HAVE_KERNEL_BZIP2
1536 select HAVE_KERNEL_LZMA
1537 select HAVE_KERNEL_LZO
1539 config SYS_SUPPORTS_ZBOOT_UART16550
1541 select SYS_SUPPORTS_ZBOOT
1543 config CPU_LOONGSON2
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_64BIT_KERNEL
1547 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select DMA_NONCOHERENT
1555 select SWAP_IO_SPACE
1556 select WEAK_ORDERING
1558 config SYS_HAS_CPU_LOONGSON2E
1561 config SYS_HAS_CPU_LOONGSON2F
1563 select CPU_SUPPORTS_CPUFREQ
1564 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1565 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1567 config SYS_HAS_CPU_MIPS32_R1
1570 config SYS_HAS_CPU_MIPS32_R2
1573 config SYS_HAS_CPU_MIPS64_R1
1576 config SYS_HAS_CPU_MIPS64_R2
1579 config SYS_HAS_CPU_R3000
1582 config SYS_HAS_CPU_TX39XX
1585 config SYS_HAS_CPU_VR41XX
1588 config SYS_HAS_CPU_R4300
1591 config SYS_HAS_CPU_R4X00
1594 config SYS_HAS_CPU_TX49XX
1597 config SYS_HAS_CPU_R5000
1600 config SYS_HAS_CPU_R5432
1603 config SYS_HAS_CPU_R5500
1606 config SYS_HAS_CPU_R6000
1609 config SYS_HAS_CPU_NEVADA
1612 config SYS_HAS_CPU_R8000
1615 config SYS_HAS_CPU_R10000
1618 config SYS_HAS_CPU_RM7000
1621 config SYS_HAS_CPU_RM9000
1624 config SYS_HAS_CPU_SB1
1627 config SYS_HAS_CPU_CAVIUM_OCTEON
1630 config SYS_HAS_CPU_BMIPS3300
1633 config SYS_HAS_CPU_BMIPS4350
1636 config SYS_HAS_CPU_BMIPS4380
1639 config SYS_HAS_CPU_BMIPS5000
1642 config SYS_HAS_CPU_XLR
1645 config SYS_HAS_CPU_XLP
1649 # CPU may reorder R->R, R->W, W->R, W->W
1650 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1652 config WEAK_ORDERING
1656 # CPU may reorder reads and writes beyond LL/SC
1657 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1659 config WEAK_REORDERING_BEYOND_LLSC
1664 # These two indicate any level of the MIPS32 and MIPS64 architecture
1668 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1672 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1675 # These two indicate the revision of the architecture, either Release 1 or Release 2
1679 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1683 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1685 config SYS_SUPPORTS_32BIT_KERNEL
1687 config SYS_SUPPORTS_64BIT_KERNEL
1689 config CPU_SUPPORTS_32BIT_KERNEL
1691 config CPU_SUPPORTS_64BIT_KERNEL
1693 config CPU_SUPPORTS_CPUFREQ
1695 config CPU_SUPPORTS_ADDRWINCFG
1697 config CPU_SUPPORTS_HUGEPAGES
1699 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1701 config MIPS_PGD_C0_CONTEXT
1703 default y if 64BIT && CPU_MIPSR2
1706 # Set to y for ptrace access to watch registers.
1708 config HARDWARE_WATCHPOINTS
1710 default y if CPU_MIPSR1 || CPU_MIPSR2
1716 prompt "Kernel code model"
1718 You should only select this option if you have a workload that
1719 actually benefits from 64-bit processing or if your machine has
1720 large memory. You will only be presented a single option in this
1721 menu if your system does not support both 32-bit and 64-bit kernels.
1724 bool "32-bit kernel"
1725 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1728 Select this option if you want to build a 32-bit kernel.
1730 bool "64-bit kernel"
1731 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1732 select HAVE_SYSCALL_WRAPPERS
1734 Select this option if you want to build a 64-bit kernel.
1739 prompt "Kernel page size"
1740 default PAGE_SIZE_4KB
1742 config PAGE_SIZE_4KB
1744 depends on !CPU_LOONGSON2
1746 This option select the standard 4kB Linux page size. On some
1747 R3000-family processors this is the only available page size. Using
1748 4kB page size will minimize memory consumption and is therefore
1749 recommended for low memory systems.
1751 config PAGE_SIZE_8KB
1753 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1755 Using 8kB page size will result in higher performance kernel at
1756 the price of higher memory consumption. This option is available
1757 only on R8000 and cnMIPS processors. Note that you will need a
1758 suitable Linux distribution to support this.
1760 config PAGE_SIZE_16KB
1762 depends on !CPU_R3000 && !CPU_TX39XX
1764 Using 16kB page size will result in higher performance kernel at
1765 the price of higher memory consumption. This option is available on
1766 all non-R3000 family processors. Note that you will need a suitable
1767 Linux distribution to support this.
1769 config PAGE_SIZE_32KB
1771 depends on CPU_CAVIUM_OCTEON
1773 Using 32kB page size will result in higher performance kernel at
1774 the price of higher memory consumption. This option is available
1775 only on cnMIPS cores. Note that you will need a suitable Linux
1776 distribution to support this.
1778 config PAGE_SIZE_64KB
1780 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1782 Using 64kB page size will result in higher performance kernel at
1783 the price of higher memory consumption. This option is available on
1784 all non-R3000 family processor. Not that at the time of this
1785 writing this option is still high experimental.
1789 config FORCE_MAX_ZONEORDER
1790 int "Maximum zone order"
1791 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1792 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1793 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1794 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1798 The kernel memory allocator divides physically contiguous memory
1799 blocks into "zones", where each zone is a power of two number of
1800 pages. This option selects the largest power of two that the kernel
1801 keeps in the memory allocator. If you need to allocate very large
1802 blocks of physically contiguous memory, then you may need to
1803 increase this value.
1805 This config option is actually maximum order plus one. For example,
1806 a value of 11 means that the largest free memory block is 2^10 pages.
1808 The page size is not necessarily 4KB. Keep this in mind
1809 when choosing a value for this option.
1814 config IP22_CPU_SCACHE
1819 # Support for a MIPS32 / MIPS64 style S-caches
1821 config MIPS_CPU_SCACHE
1825 config R5000_CPU_SCACHE
1829 config RM7000_CPU_SCACHE
1833 config SIBYTE_DMA_PAGEOPS
1834 bool "Use DMA to clear/copy pages"
1837 Instead of using the CPU to zero and copy pages, use a Data Mover
1838 channel. These DMA channels are otherwise unused by the standard
1839 SiByte Linux port. Seems to give a small performance benefit.
1841 config CPU_HAS_PREFETCH
1845 prompt "MIPS MT options"
1847 config MIPS_MT_DISABLED
1848 bool "Disable multithreading support."
1850 Use this option if your workload can't take advantage of
1851 MIPS hardware multithreading support. On systems that don't have
1852 the option of an MT-enabled processor this option will be the only
1853 option in this menu.
1856 bool "Use 1 TC on each available VPE for SMP"
1857 depends on SYS_SUPPORTS_MULTITHREADING
1858 select CPU_MIPSR2_IRQ_VI
1859 select CPU_MIPSR2_IRQ_EI
1861 select NR_CPUS_DEFAULT_2
1863 select SYS_SUPPORTS_SCHED_SMT if SMP
1864 select SYS_SUPPORTS_SMP
1867 This is a kernel model which is known a VSMP but lately has been
1868 marketesed into SMVP.
1869 Virtual SMP uses the processor's VPEs to implement virtual
1870 processors. In currently available configuration of the 34K processor
1871 this allows for a dual processor. Both processors will share the same
1872 primary caches; each will obtain the half of the TLB for it's own
1873 exclusive use. For a layman this model can be described as similar to
1874 what Intel calls Hyperthreading.
1876 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1879 bool "SMTC: Use all TCs on all VPEs for SMP"
1880 depends on CPU_MIPS32_R2
1881 #depends on CPU_MIPS64_R2 # once there is hardware ...
1882 depends on SYS_SUPPORTS_MULTITHREADING
1883 select CPU_MIPSR2_IRQ_VI
1884 select CPU_MIPSR2_IRQ_EI
1886 select NR_CPUS_DEFAULT_8
1888 select SYS_SUPPORTS_SMP
1891 This is a kernel model which is known a SMTC or lately has been
1892 marketesed into SMVP.
1893 is presenting the available TC's of the core as processors to Linux.
1894 On currently available 34K processors this means a Linux system will
1895 see up to 5 processors. The implementation of the SMTC kernel differs
1896 significantly from VSMP and cannot efficiently coexist in the same
1897 kernel binary so the choice between VSMP and SMTC is a compile time
1900 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1908 bool "SMT (multithreading) scheduler support"
1909 depends on SYS_SUPPORTS_SCHED_SMT
1912 SMT scheduler support improves the CPU scheduler's decision making
1913 when dealing with MIPS MT enabled cores at a cost of slightly
1914 increased overhead in some places. If unsure say N here.
1916 config SYS_SUPPORTS_SCHED_SMT
1920 config SYS_SUPPORTS_MULTITHREADING
1923 config MIPS_MT_FPAFF
1924 bool "Dynamic FPU affinity for FP-intensive threads"
1926 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1928 config MIPS_VPE_LOADER
1929 bool "VPE loader support."
1930 depends on SYS_SUPPORTS_MULTITHREADING
1931 select CPU_MIPSR2_IRQ_VI
1932 select CPU_MIPSR2_IRQ_EI
1935 Includes a loader for loading an elf relocatable object
1936 onto another VPE and running it.
1938 config MIPS_MT_SMTC_IM_BACKSTOP
1939 bool "Use per-TC register bits as backstop for inhibited IM bits"
1940 depends on MIPS_MT_SMTC
1943 To support multiple TC microthreads acting as "CPUs" within
1944 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1945 during interrupt handling. To support legacy drivers and interrupt
1946 controller management code, SMTC has a "backstop" to track and
1947 if necessary restore the interrupt mask. This has some performance
1948 impact on interrupt service overhead.
1950 config MIPS_MT_SMTC_IRQAFF
1951 bool "Support IRQ affinity API"
1952 depends on MIPS_MT_SMTC
1955 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1956 for SMTC Linux kernel. Requires platform support, of which
1957 an example can be found in the MIPS kernel i8259 and Malta
1958 platform code. Adds some overhead to interrupt dispatch, and
1959 should be used only if you know what you are doing.
1961 config MIPS_VPE_LOADER_TOM
1962 bool "Load VPE program into memory hidden from linux"
1963 depends on MIPS_VPE_LOADER
1966 The loader can use memory that is present but has been hidden from
1967 Linux using the kernel command line option "mem=xxMB". It's up to
1968 you to ensure the amount you put in the option and the space your
1969 program requires is less or equal to the amount physically present.
1971 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1972 config MIPS_VPE_APSP_API
1973 bool "Enable support for AP/SP API (RTLX)"
1974 depends on MIPS_VPE_LOADER
1977 config MIPS_APSP_KSPD
1979 depends on MIPS_VPE_APSP_API
1982 KSPD is a kernel daemon that accepts syscall requests from the SP
1983 side, actions them and returns the results. It also handles the
1984 "exit" syscall notifying other kernel modules the SP program is
1985 exiting. You probably want to say yes here.
1988 bool "MIPS CMP framework support"
1989 depends on SYS_SUPPORTS_MIPS_CMP
1991 select SYS_SUPPORTS_SMP
1992 select SYS_SUPPORTS_SCHED_SMT if SMP
1993 select WEAK_ORDERING
1996 This is a placeholder option for the GCMP work. It will need to
1997 be handled differently...
1999 config SB1_PASS_1_WORKAROUNDS
2001 depends on CPU_SB1_PASS_1
2004 config SB1_PASS_2_WORKAROUNDS
2006 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2009 config SB1_PASS_2_1_WORKAROUNDS
2011 depends on CPU_SB1 && CPU_SB1_PASS_2
2014 config 64BIT_PHYS_ADDR
2017 config ARCH_PHYS_ADDR_T_64BIT
2018 def_bool 64BIT_PHYS_ADDR
2020 config CPU_HAS_SMARTMIPS
2021 depends on SYS_SUPPORTS_SMARTMIPS
2022 bool "Support for the SmartMIPS ASE"
2024 SmartMIPS is a extension of the MIPS32 architecture aimed at
2025 increased security at both hardware and software level for
2026 smartcards. Enabling this option will allow proper use of the
2027 SmartMIPS instructions by Linux applications. However a kernel with
2028 this option will not work on a MIPS core without SmartMIPS core. If
2029 you don't know you probably don't have SmartMIPS and should say N
2039 # Vectored interrupt mode is an R2 feature
2041 config CPU_MIPSR2_IRQ_VI
2045 # Extended interrupt mode is an R2 feature
2047 config CPU_MIPSR2_IRQ_EI
2052 depends on !CPU_R3000
2055 config GENERIC_CLOCKEVENTS_BROADCAST
2061 config CPU_DADDI_WORKAROUNDS
2064 config CPU_R4000_WORKAROUNDS
2066 select CPU_R4400_WORKAROUNDS
2068 config CPU_R4400_WORKAROUNDS
2072 # - Highmem only makes sense for the 32-bit kernel.
2073 # - The current highmem code will only work properly on physically indexed
2074 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2075 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2076 # moment we protect the user and offer the highmem option only on machines
2077 # where it's known to be safe. This will not offer highmem on a few systems
2078 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2079 # indexed CPUs but we're playing safe.
2080 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2081 # know they might have memory configurations that could make use of highmem
2085 bool "High Memory Support"
2086 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2088 config CPU_SUPPORTS_HIGHMEM
2091 config SYS_SUPPORTS_HIGHMEM
2094 config SYS_SUPPORTS_SMARTMIPS
2097 config ARCH_FLATMEM_ENABLE
2099 depends on !NUMA && !CPU_LOONGSON2
2101 config ARCH_DISCONTIGMEM_ENABLE
2103 default y if SGI_IP27
2105 Say Y to support efficient handling of discontiguous physical memory,
2106 for architectures which are either NUMA (Non-Uniform Memory Access)
2107 or have huge holes in the physical address space for other reasons.
2108 See <file:Documentation/vm/numa> for more.
2110 config ARCH_SPARSEMEM_ENABLE
2112 select SPARSEMEM_STATIC
2116 depends on SYS_SUPPORTS_NUMA
2118 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2119 Access). This option improves performance on systems with more
2120 than two nodes; on two node systems it is generally better to
2121 leave it disabled; on single node systems disable this option
2124 config SYS_SUPPORTS_NUMA
2130 depends on NEED_MULTIPLE_NODES
2132 config HW_PERF_EVENTS
2133 bool "Enable hardware performance counter support for perf events"
2134 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2137 Enable hardware performance counter support for perf events. If
2138 disabled, perf events will use software events only.
2143 bool "Multi-Processing support"
2144 depends on SYS_SUPPORTS_SMP
2146 select USE_GENERIC_SMP_HELPERS
2148 This enables support for systems with more than one CPU. If you have
2149 a system with only one CPU, like most personal computers, say N. If
2150 you have a system with more than one CPU, say Y.
2152 If you say N here, the kernel will run on single and multiprocessor
2153 machines, but will use only one CPU of a multiprocessor machine. If
2154 you say Y here, the kernel will run on many, but not all,
2155 singleprocessor machines. On a singleprocessor machine, the kernel
2156 will run faster if you say N here.
2158 People using multiprocessor machines who say Y here should also say
2159 Y to "Enhanced Real Time Clock Support", below.
2161 See also the SMP-HOWTO available at
2162 <http://www.tldp.org/docs.html#howto>.
2164 If you don't know what to do here, say N.
2169 config SYS_SUPPORTS_MIPS_CMP
2172 config SYS_SUPPORTS_SMP
2175 config NR_CPUS_DEFAULT_1
2178 config NR_CPUS_DEFAULT_2
2181 config NR_CPUS_DEFAULT_4
2184 config NR_CPUS_DEFAULT_8
2187 config NR_CPUS_DEFAULT_16
2190 config NR_CPUS_DEFAULT_32
2193 config NR_CPUS_DEFAULT_64
2197 int "Maximum number of CPUs (2-64)"
2198 range 1 64 if NR_CPUS_DEFAULT_1
2200 default "1" if NR_CPUS_DEFAULT_1
2201 default "2" if NR_CPUS_DEFAULT_2
2202 default "4" if NR_CPUS_DEFAULT_4
2203 default "8" if NR_CPUS_DEFAULT_8
2204 default "16" if NR_CPUS_DEFAULT_16
2205 default "32" if NR_CPUS_DEFAULT_32
2206 default "64" if NR_CPUS_DEFAULT_64
2208 This allows you to specify the maximum number of CPUs which this
2209 kernel will support. The maximum supported value is 32 for 32-bit
2210 kernel and 64 for 64-bit kernels; the minimum value which makes
2211 sense is 1 for Qemu (useful only for kernel debugging purposes)
2212 and 2 for all others.
2214 This is purely to save memory - each supported CPU adds
2215 approximately eight kilobytes to the kernel image. For best
2216 performance should round up your number of processors to the next
2219 source "kernel/time/Kconfig"
2222 # Timer Interrupt Frequency Configuration
2226 prompt "Timer frequency"
2229 Allows the configuration of the timer frequency.
2232 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2235 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2238 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2241 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2244 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2247 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2250 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2254 config SYS_SUPPORTS_48HZ
2257 config SYS_SUPPORTS_100HZ
2260 config SYS_SUPPORTS_128HZ
2263 config SYS_SUPPORTS_250HZ
2266 config SYS_SUPPORTS_256HZ
2269 config SYS_SUPPORTS_1000HZ
2272 config SYS_SUPPORTS_1024HZ
2275 config SYS_SUPPORTS_ARBIT_HZ
2277 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2278 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2279 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2280 !SYS_SUPPORTS_1024HZ
2285 default 100 if HZ_100
2286 default 128 if HZ_128
2287 default 250 if HZ_250
2288 default 256 if HZ_256
2289 default 1000 if HZ_1000
2290 default 1024 if HZ_1024
2292 source "kernel/Kconfig.preempt"
2295 bool "Kexec system call (EXPERIMENTAL)"
2296 depends on EXPERIMENTAL
2298 kexec is a system call that implements the ability to shutdown your
2299 current kernel, and to start another kernel. It is like a reboot
2300 but it is independent of the system firmware. And like a reboot
2301 you can start any kernel with it, not just Linux.
2303 The name comes from the similarity to the exec system call.
2305 It is an ongoing process to be certain the hardware in a machine
2306 is properly shutdown, so do not be surprised if this code does not
2307 initially work for you. It may help to enable device hotplugging
2308 support. As of this writing the exact hardware interface is
2309 strongly in flux, so no good recommendation can be made.
2312 bool "Enable seccomp to safely compute untrusted bytecode"
2316 This kernel feature is useful for number crunching applications
2317 that may need to compute untrusted bytecode during their
2318 execution. By using pipes or other transports made available to
2319 the process as file descriptors supporting the read/write
2320 syscalls, it's possible to isolate those applications in
2321 their own address space using seccomp. Once seccomp is
2322 enabled via /proc/<pid>/seccomp, it cannot be disabled
2323 and the task is only allowed to execute a few safe syscalls
2324 defined by each seccomp mode.
2326 If unsure, say Y. Only embedded should say N here.
2329 bool "Flattened Device Tree support"
2331 select OF_EARLY_FLATTREE
2334 Include support for flattened device tree machine descriptions.
2338 config LOCKDEP_SUPPORT
2342 config STACKTRACE_SUPPORT
2346 source "init/Kconfig"
2348 source "kernel/Kconfig.freezer"
2350 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2358 bool "Support for PCI controller"
2359 depends on HW_HAS_PCI
2361 select GENERIC_PCI_IOMAP
2362 select NO_GENERIC_PCI_IOPORT_MAP
2364 Find out whether you have a PCI motherboard. PCI is the name of a
2365 bus system, i.e. the way the CPU talks to the other stuff inside
2366 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2372 source "drivers/pci/Kconfig"
2375 # ISA support is now enabled via select. Too many systems still have the one
2376 # or other ISA chip on the board that users don't know about so don't expect
2377 # users to choose the right thing ...
2384 depends on HW_HAS_EISA
2386 select GENERIC_ISA_DMA
2388 The Extended Industry Standard Architecture (EISA) bus was
2389 developed as an open alternative to the IBM MicroChannel bus.
2391 The EISA bus provided some of the features of the IBM MicroChannel
2392 bus while maintaining backward compatibility with cards made for
2393 the older ISA bus. The EISA bus saw limited use between 1988 and
2394 1995 when it was made obsolete by the PCI bus.
2396 Say Y here if you are building a kernel for an EISA-based machine.
2400 source "drivers/eisa/Kconfig"
2403 bool "TURBOchannel support"
2404 depends on MACH_DECSTATION
2406 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2407 processors. TURBOchannel programming specifications are available
2409 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2411 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2412 Linux driver support status is documented at:
2413 <http://www.linux-mips.org/wiki/DECstation>
2423 select MIPS_EXTERNAL_TIMER
2428 source "drivers/pcmcia/Kconfig"
2430 source "drivers/pci/hotplug/Kconfig"
2433 bool "RapidIO support"
2437 If you say Y here, the kernel will include drivers and
2438 infrastructure code to support RapidIO interconnect devices.
2440 source "drivers/rapidio/Kconfig"
2444 menu "Executable file formats"
2446 source "fs/Kconfig.binfmt"
2451 config MIPS32_COMPAT
2452 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2455 Select this option if you want Linux/MIPS 32-bit binary
2456 compatibility. Since all software available for Linux/MIPS is
2457 currently 32-bit you should say Y here.
2461 depends on MIPS32_COMPAT
2462 select ARCH_WANT_OLD_COMPAT_IPC
2465 config SYSVIPC_COMPAT
2467 depends on COMPAT && SYSVIPC
2471 bool "Kernel support for o32 binaries"
2472 depends on MIPS32_COMPAT
2474 Select this option if you want to run o32 binaries. These are pure
2475 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2476 existing binaries are in this format.
2481 bool "Kernel support for n32 binaries"
2482 depends on MIPS32_COMPAT
2484 Select this option if you want to run n32 binaries. These are
2485 64-bit binaries using 32-bit quantities for addressing and certain
2486 data that would normally be 64-bit. They are used in special
2493 default y if MIPS32_O32 || MIPS32_N32
2497 menu "Power management options"
2499 config ARCH_HIBERNATION_POSSIBLE
2501 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2503 config ARCH_SUSPEND_POSSIBLE
2505 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2507 source "kernel/power/Kconfig"
2511 source "arch/mips/kernel/cpufreq/Kconfig"
2513 source "net/Kconfig"
2515 source "drivers/Kconfig"
2519 source "arch/mips/Kconfig.debug"
2521 source "security/Kconfig"
2523 source "crypto/Kconfig"
2525 source "lib/Kconfig"