4 select HAVE_GENERIC_DMA_COHERENT
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
10 select HAVE_FUNCTION_TRACER
11 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
12 select HAVE_DYNAMIC_FTRACE
13 select HAVE_FTRACE_MCOUNT_RECORD
14 select HAVE_C_RECORDMCOUNT
15 select HAVE_FUNCTION_GRAPH_TRACER
17 select HAVE_KRETPROBES
18 select RTC_LIB if !MACH_LOONGSON
19 select GENERIC_ATOMIC64 if !64BIT
21 select HAVE_DMA_API_DEBUG
22 select HAVE_GENERIC_HARDIRQS
23 select GENERIC_IRQ_PROBE
25 menu "Machine selection"
35 bool "Alchemy processor based machines"
36 select 64BIT_PHYS_ADDR
40 select SYS_HAS_CPU_MIPS32_R1
41 select SYS_SUPPORTS_32BIT_KERNEL
42 select SYS_SUPPORTS_APM_EMULATION
44 select ARCH_WANT_OPTIONAL_GPIOLIB
45 select SYS_SUPPORTS_ZBOOT
48 bool "Texas Instruments AR7"
50 select DMA_NONCOHERENT
56 select SYS_HAS_CPU_MIPS32_R1
57 select SYS_HAS_EARLY_PRINTK
58 select SYS_SUPPORTS_32BIT_KERNEL
59 select SYS_SUPPORTS_LITTLE_ENDIAN
60 select SYS_SUPPORTS_ZBOOT_UART16550
61 select ARCH_REQUIRE_GPIOLIB
65 Support for the Texas Instruments AR7 System-on-a-Chip
66 family: TNETD7100, 7200 and 7300.
69 bool "Broadcom BCM47XX based boards"
72 select DMA_NONCOHERENT
75 select SYS_HAS_CPU_MIPS32_R1
76 select SYS_SUPPORTS_32BIT_KERNEL
77 select SYS_SUPPORTS_LITTLE_ENDIAN
79 select SSB_DRIVER_MIPS
80 select SSB_DRIVER_EXTIF
82 select SSB_B43_PCI_BRIDGE if PCI
83 select SSB_PCICORE_HOSTMODE if PCI
85 select SYS_HAS_EARLY_PRINTK
88 Support for BCM47XX based boards
91 bool "Broadcom BCM63XX based boards"
94 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R1
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_BIG_ENDIAN
99 select SYS_HAS_EARLY_PRINTK
101 select ARCH_REQUIRE_GPIOLIB
103 Support for BCM63XX based boards
110 select DMA_NONCOHERENT
116 select PCI_GT64XXX_PCI0
118 select SYS_HAS_CPU_NEVADA
119 select SYS_HAS_EARLY_PRINTK
120 select SYS_SUPPORTS_32BIT_KERNEL
121 select SYS_SUPPORTS_64BIT_KERNEL
122 select SYS_SUPPORTS_LITTLE_ENDIAN
124 config MACH_DECSTATION
131 select CPU_DADDI_WORKAROUNDS if 64BIT
132 select CPU_R4000_WORKAROUNDS if 64BIT
133 select CPU_R4400_WORKAROUNDS if 64BIT
134 select DMA_NONCOHERENT
137 select SYS_HAS_CPU_R3000
138 select SYS_HAS_CPU_R4X00
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
141 select SYS_SUPPORTS_LITTLE_ENDIAN
142 select SYS_SUPPORTS_128HZ
143 select SYS_SUPPORTS_256HZ
144 select SYS_SUPPORTS_1024HZ
146 This enables support for DEC's MIPS based workstations. For details
147 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
148 DECstation porting pages on <http://decstation.unix-ag.org/>.
150 If you have one of the following DECstation Models you definitely
151 want to choose R4xx0 for the CPU Type:
158 otherwise choose R3000.
161 bool "Jazz family of machines"
164 select ARCH_MAY_HAVE_PC_FDC
167 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
168 select GENERIC_ISA_DMA
173 select SYS_HAS_CPU_R4X00
174 select SYS_SUPPORTS_32BIT_KERNEL
175 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
176 select SYS_SUPPORTS_100HZ
178 This a family of machines based on the MIPS R4030 chipset which was
179 used by several vendors to build RISC/os and Windows NT workstations.
180 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
181 Olivetti M700-10 workstations.
184 bool "Ingenic JZ4740 based machines"
185 select SYS_HAS_CPU_MIPS32_R1
186 select SYS_SUPPORTS_32BIT_KERNEL
187 select SYS_SUPPORTS_LITTLE_ENDIAN
188 select DMA_NONCOHERENT
191 select ARCH_REQUIRE_GPIOLIB
192 select SYS_HAS_EARLY_PRINTK
196 bool "LASAT Networks platforms"
199 select DMA_NONCOHERENT
200 select SYS_HAS_EARLY_PRINTK
203 select PCI_GT64XXX_PCI0
205 select R5000_CPU_SCACHE
206 select SYS_HAS_CPU_R5000
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
209 select SYS_SUPPORTS_LITTLE_ENDIAN
212 bool "Loongson family of machines"
213 select SYS_SUPPORTS_ZBOOT
215 This enables the support of Loongson family of machines.
217 Loongson is a family of general-purpose MIPS-compatible CPUs.
218 developed at Institute of Computing Technology (ICT),
219 Chinese Academy of Sciences (CAS) in the People's Republic
220 of China. The chief architect is Professor Weiwu Hu.
223 bool "MIPS Malta board"
224 select ARCH_MAY_HAVE_PC_FDC
229 select DMA_NONCOHERENT
230 select GENERIC_ISA_DMA
236 select MIPS_BOARDS_GEN
238 select MIPS_CPU_SCACHE
239 select PCI_GT64XXX_PCI0
242 select SYS_HAS_CPU_MIPS32_R1
243 select SYS_HAS_CPU_MIPS32_R2
244 select SYS_HAS_CPU_MIPS64_R1
245 select SYS_HAS_CPU_NEVADA
246 select SYS_HAS_CPU_RM7000
247 select SYS_HAS_EARLY_PRINTK
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_64BIT_KERNEL
250 select SYS_SUPPORTS_BIG_ENDIAN
251 select SYS_SUPPORTS_LITTLE_ENDIAN
252 select SYS_SUPPORTS_MIPS_CMP
253 select SYS_SUPPORTS_MULTITHREADING
254 select SYS_SUPPORTS_SMARTMIPS
255 select SYS_SUPPORTS_ZBOOT
257 This enables support for the MIPS Technologies Malta evaluation
261 bool 'MIPS simulator (MIPSsim)'
264 select DMA_NONCOHERENT
265 select SYS_HAS_EARLY_PRINTK
268 select SYS_HAS_CPU_MIPS32_R1
269 select SYS_HAS_CPU_MIPS32_R2
270 select SYS_HAS_EARLY_PRINTK
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_BIG_ENDIAN
273 select SYS_SUPPORTS_MULTITHREADING
274 select SYS_SUPPORTS_LITTLE_ENDIAN
276 This option enables support for MIPS Technologies MIPSsim software
280 bool "NEC EMMA2RH Mark-eins board"
284 This enables support for the NEC Electronics Mark-eins boards.
287 bool "NEC VR4100 series based machines"
290 select SYS_HAS_CPU_VR41XX
291 select ARCH_REQUIRE_GPIOLIB
294 bool "NXP STB220 board"
297 Support for NXP Semiconductors STB220 Development Board.
304 Support for NXP Semiconductors STB225 Development Board.
307 bool "NXP PNX8550 based JBS board"
309 select SYS_SUPPORTS_LITTLE_ENDIAN
311 config PNX8550_STB810
312 bool "NXP PNX8550 based STB810 board"
314 select SYS_SUPPORTS_LITTLE_ENDIAN
317 bool "PMC-Sierra MSP chipsets"
318 depends on EXPERIMENTAL
319 select DMA_NONCOHERENT
321 select NO_EXCEPT_FILL
323 select SYS_HAS_CPU_MIPS32_R1
324 select SYS_HAS_CPU_MIPS32_R2
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_BIG_ENDIAN
329 select SERIAL_8250_CONSOLE
331 This adds support for the PMC-Sierra family of Multi-Service
332 Processor System-On-A-Chips. These parts include a number
333 of integrated peripherals, interfaces and DSPs in addition to
334 a variety of MIPS cores.
337 bool "PMC-Sierra Yosemite eval board"
346 select SYS_HAS_CPU_RM9000
347 select SYS_HAS_EARLY_PRINTK
348 select SYS_SUPPORTS_32BIT_KERNEL
349 select SYS_SUPPORTS_64BIT_KERNEL
350 select SYS_SUPPORTS_BIG_ENDIAN
351 select SYS_SUPPORTS_HIGHMEM
352 select SYS_SUPPORTS_SMP
354 Yosemite is an evaluation board for the RM9000x2 processor
355 manufactured by PMC-Sierra.
361 select CPU_MIPSR2_IRQ_VI
362 select CPU_MIPSR2_IRQ_EI
364 select DMA_NONCOHERENT
366 select SYS_HAS_EARLY_PRINTK
367 select SYS_HAS_CPU_MIPS32_R2
368 select SYS_SUPPORTS_32BIT_KERNEL
369 select SYS_SUPPORTS_BIG_ENDIAN
370 select SYS_SUPPORTS_HIGHMEM
371 select USB_OHCI_LITTLE_ENDIAN
373 This enables support for the Cisco PowerTV Platform.
376 bool "SGI IP22 (Indy/Indigo2)"
382 select DEFAULT_SGI_PARTITION
383 select DMA_NONCOHERENT
387 select IP22_CPU_SCACHE
389 select GENERIC_ISA_DMA_SUPPORT_BROKEN
391 select SGI_HAS_INDYDOG
397 select SYS_HAS_CPU_R4X00
398 select SYS_HAS_CPU_R5000
400 # Disable EARLY_PRINTK for now since it leads to overwritten prom
401 # memory during early boot on some machines.
403 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
404 # for a more details discussion
406 # select SYS_HAS_EARLY_PRINTK
407 select SYS_SUPPORTS_32BIT_KERNEL
408 select SYS_SUPPORTS_64BIT_KERNEL
409 select SYS_SUPPORTS_BIG_ENDIAN
411 This are the SGI Indy, Challenge S and Indigo2, as well as certain
412 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
413 that runs on these, say Y here.
416 bool "SGI IP27 (Origin200/2000)"
420 select DEFAULT_SGI_PARTITION
422 select SYS_HAS_EARLY_PRINTK
424 select NR_CPUS_DEFAULT_64
425 select SYS_HAS_CPU_R10000
426 select SYS_SUPPORTS_64BIT_KERNEL
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_NUMA
429 select SYS_SUPPORTS_SMP
431 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
432 workstations. To compile a Linux kernel that runs on these, say Y
436 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
437 depends on EXPERIMENTAL
443 select DEFAULT_SGI_PARTITION
444 select DMA_NONCOHERENT
445 select GENERIC_ISA_DMA_SUPPORT_BROKEN
451 select SGI_HAS_INDYDOG
457 select SYS_HAS_CPU_R10000
459 # Disable EARLY_PRINTK for now since it leads to overwritten prom
460 # memory during early boot on some machines.
462 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
463 # for a more details discussion
465 # select SYS_HAS_EARLY_PRINTK
466 select SYS_SUPPORTS_64BIT_KERNEL
467 select SYS_SUPPORTS_BIG_ENDIAN
469 This is the SGI Indigo2 with R10000 processor. To compile a Linux
470 kernel that runs on these, say Y here.
479 select DMA_NONCOHERENT
482 select R5000_CPU_SCACHE
483 select RM7000_CPU_SCACHE
484 select SYS_HAS_CPU_R5000
485 select SYS_HAS_CPU_R10000 if BROKEN
486 select SYS_HAS_CPU_RM7000
487 select SYS_HAS_CPU_NEVADA
488 select SYS_SUPPORTS_64BIT_KERNEL
489 select SYS_SUPPORTS_BIG_ENDIAN
491 If you want this kernel to run on SGI O2 workstation, say Y here.
494 bool "Sibyte BCM91120C-CRhine"
495 depends on EXPERIMENTAL
498 select SIBYTE_BCM1120
500 select SYS_HAS_CPU_SB1
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_LITTLE_ENDIAN
505 bool "Sibyte BCM91120x-Carmel"
506 depends on EXPERIMENTAL
509 select SIBYTE_BCM1120
511 select SYS_HAS_CPU_SB1
512 select SYS_SUPPORTS_BIG_ENDIAN
513 select SYS_SUPPORTS_LITTLE_ENDIAN
516 bool "Sibyte BCM91125C-CRhone"
517 depends on EXPERIMENTAL
520 select SIBYTE_BCM1125
522 select SYS_HAS_CPU_SB1
523 select SYS_SUPPORTS_BIG_ENDIAN
524 select SYS_SUPPORTS_HIGHMEM
525 select SYS_SUPPORTS_LITTLE_ENDIAN
528 bool "Sibyte BCM91125E-Rhone"
529 depends on EXPERIMENTAL
532 select SIBYTE_BCM1125H
534 select SYS_HAS_CPU_SB1
535 select SYS_SUPPORTS_BIG_ENDIAN
536 select SYS_SUPPORTS_LITTLE_ENDIAN
539 bool "Sibyte BCM91250A-SWARM"
542 select HAVE_PATA_PLATFORM
543 select NR_CPUS_DEFAULT_2
546 select SYS_HAS_CPU_SB1
547 select SYS_SUPPORTS_BIG_ENDIAN
548 select SYS_SUPPORTS_HIGHMEM
549 select SYS_SUPPORTS_LITTLE_ENDIAN
550 select ZONE_DMA32 if 64BIT
552 config SIBYTE_LITTLESUR
553 bool "Sibyte BCM91250C2-LittleSur"
554 depends on EXPERIMENTAL
557 select HAVE_PATA_PLATFORM
558 select NR_CPUS_DEFAULT_2
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_HIGHMEM
564 select SYS_SUPPORTS_LITTLE_ENDIAN
566 config SIBYTE_SENTOSA
567 bool "Sibyte BCM91250E-Sentosa"
568 depends on EXPERIMENTAL
571 select NR_CPUS_DEFAULT_2
574 select SYS_HAS_CPU_SB1
575 select SYS_SUPPORTS_BIG_ENDIAN
576 select SYS_SUPPORTS_LITTLE_ENDIAN
579 bool "Sibyte BCM91480B-BigSur"
582 select NR_CPUS_DEFAULT_4
583 select SIBYTE_BCM1x80
585 select SYS_HAS_CPU_SB1
586 select SYS_SUPPORTS_BIG_ENDIAN
587 select SYS_SUPPORTS_HIGHMEM
588 select SYS_SUPPORTS_LITTLE_ENDIAN
589 select ZONE_DMA32 if 64BIT
592 bool "SNI RM200/300/400"
593 select ARC if CPU_LITTLE_ENDIAN
594 select ARC32 if CPU_LITTLE_ENDIAN
595 select SNIPROM if CPU_BIG_ENDIAN
596 select ARCH_MAY_HAVE_PC_FDC
600 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
601 select DMA_NONCOHERENT
602 select GENERIC_ISA_DMA
609 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
610 select SYS_HAS_CPU_R4X00
611 select SYS_HAS_CPU_R5000
612 select SYS_HAS_CPU_R10000
613 select R5000_CPU_SCACHE
614 select SYS_HAS_EARLY_PRINTK
615 select SYS_SUPPORTS_32BIT_KERNEL
616 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_HIGHMEM
619 select SYS_SUPPORTS_LITTLE_ENDIAN
621 The SNI RM200/300/400 are MIPS-based machines manufactured by
622 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
623 Technology and now in turn merged with Fujitsu. Say Y here to
624 support this machine type.
627 bool "Toshiba TX39 series based machines"
630 bool "Toshiba TX49 series based machines"
632 config MIKROTIK_RB532
633 bool "Mikrotik RB532 boards"
636 select DMA_NONCOHERENT
639 select SYS_HAS_CPU_MIPS32_R1
640 select SYS_SUPPORTS_32BIT_KERNEL
641 select SYS_SUPPORTS_LITTLE_ENDIAN
644 select ARCH_REQUIRE_GPIOLIB
646 Support the Mikrotik(tm) RouterBoard 532 series,
647 based on the IDT RC32434 SoC.
650 bool "Wind River PPMC board"
655 select DMA_NONCOHERENT
657 select PCI_GT64XXX_PCI0
659 select SYS_HAS_CPU_MIPS32_R1
660 select SYS_HAS_CPU_MIPS32_R2
661 select SYS_HAS_CPU_MIPS64_R1
662 select SYS_HAS_CPU_NEVADA
663 select SYS_HAS_CPU_RM7000
664 select SYS_SUPPORTS_32BIT_KERNEL
665 select SYS_SUPPORTS_64BIT_KERNEL
666 select SYS_SUPPORTS_BIG_ENDIAN
667 select SYS_SUPPORTS_LITTLE_ENDIAN
669 This enables support for the Wind River MIPS32 4KC PPMC evaluation
670 board, which is based on GT64120 bridge chip.
672 config CAVIUM_OCTEON_SIMULATOR
673 bool "Cavium Networks Octeon Simulator"
675 select 64BIT_PHYS_ADDR
677 select SYS_SUPPORTS_64BIT_KERNEL
678 select SYS_SUPPORTS_BIG_ENDIAN
679 select SYS_SUPPORTS_HIGHMEM
680 select SYS_SUPPORTS_HOTPLUG_CPU
681 select SYS_HAS_CPU_CAVIUM_OCTEON
683 The Octeon simulator is software performance model of the Cavium
684 Octeon Processor. It supports simulating Octeon processors on x86
687 config CAVIUM_OCTEON_REFERENCE_BOARD
688 bool "Cavium Networks Octeon reference board"
690 select 64BIT_PHYS_ADDR
692 select SYS_SUPPORTS_64BIT_KERNEL
693 select SYS_SUPPORTS_BIG_ENDIAN
694 select SYS_SUPPORTS_HIGHMEM
695 select SYS_SUPPORTS_HOTPLUG_CPU
696 select SYS_HAS_EARLY_PRINTK
697 select SYS_HAS_CPU_CAVIUM_OCTEON
700 select ARCH_SUPPORTS_MSI
702 select USB_ARCH_HAS_OHCI
703 select USB_ARCH_HAS_EHCI
705 This option supports all of the Octeon reference boards from Cavium
706 Networks. It builds a kernel that dynamically determines the Octeon
707 CPU type and supports all known board reference implementations.
708 Some of the supported boards are:
715 Say Y here for most Octeon reference boards.
719 source "arch/mips/alchemy/Kconfig"
720 source "arch/mips/bcm63xx/Kconfig"
721 source "arch/mips/jazz/Kconfig"
722 source "arch/mips/jz4740/Kconfig"
723 source "arch/mips/lasat/Kconfig"
724 source "arch/mips/pmc-sierra/Kconfig"
725 source "arch/mips/powertv/Kconfig"
726 source "arch/mips/sgi-ip27/Kconfig"
727 source "arch/mips/sibyte/Kconfig"
728 source "arch/mips/txx9/Kconfig"
729 source "arch/mips/vr41xx/Kconfig"
730 source "arch/mips/cavium-octeon/Kconfig"
731 source "arch/mips/loongson/Kconfig"
735 config RWSEM_GENERIC_SPINLOCK
739 config RWSEM_XCHGADD_ALGORITHM
742 config ARCH_HAS_ILOG2_U32
746 config ARCH_HAS_ILOG2_U64
750 config ARCH_SUPPORTS_OPROFILE
752 default y if !MIPS_MT_SMTC
754 config GENERIC_FIND_NEXT_BIT
758 config GENERIC_HWEIGHT
762 config GENERIC_CALIBRATE_DELAY
766 config GENERIC_CLOCKEVENTS
770 config GENERIC_CMOS_UPDATE
774 config SCHED_OMIT_FRAME_POINTER
778 config GENERIC_HARDIRQS_NO__DO_IRQ
782 # Select some configuration options automatically based on user selections.
787 config ARCH_MAY_HAVE_PC_FDC
836 select ARCH_REQUIRE_GPIOLIB
845 config DMA_NONCOHERENT
847 select NEED_DMA_MAP_STATE
849 config NEED_DMA_MAP_STATE
852 config SYS_HAS_EARLY_PRINTK
856 bool "Support for hot-pluggable CPUs"
857 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
859 Say Y here to allow turning CPUs off and on. CPUs can be
860 controlled through /sys/devices/system/cpu.
861 (Note: power management support will enable this option
862 automatically on SMP systems. )
863 Say N if you want to disable CPU hotplug.
865 config SYS_SUPPORTS_HOTPLUG_CPU
880 config MIPS_DISABLE_OBSOLETE_IDE
889 config GENERIC_ISA_DMA
891 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
894 config GENERIC_ISA_DMA_SUPPORT_BROKEN
896 select GENERIC_ISA_DMA
905 # Endianess selection. Sufficiently obscure so many users don't know what to
906 # answer,so we try hard to limit the available choices. Also the use of a
907 # choice statement should be more obvious to the user.
910 prompt "Endianess selection"
912 Some MIPS machines can be configured for either little or big endian
913 byte order. These modes require different kernels and a different
914 Linux distribution. In general there is one preferred byteorder for a
915 particular system but some systems are just as commonly used in the
916 one or the other endianness.
918 config CPU_BIG_ENDIAN
920 depends on SYS_SUPPORTS_BIG_ENDIAN
922 config CPU_LITTLE_ENDIAN
924 depends on SYS_SUPPORTS_LITTLE_ENDIAN
932 config SYS_SUPPORTS_APM_EMULATION
935 config SYS_SUPPORTS_BIG_ENDIAN
938 config SYS_SUPPORTS_LITTLE_ENDIAN
941 config SYS_SUPPORTS_HUGETLBFS
943 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
970 config IRQ_CPU_OCTEON
973 config MIPS_BOARDS_GEN
976 config PCI_GT64XXX_PCI0
979 config NO_EXCEPT_FILL
990 select DMA_NONCOHERENT
993 select SYS_HAS_CPU_R5500
994 select SYS_SUPPORTS_32BIT_KERNEL
995 select SYS_SUPPORTS_64BIT_KERNEL
996 select SYS_SUPPORTS_BIG_ENDIAN
1003 select DMA_NONCOHERENT
1004 select SYS_HAS_CPU_MIPS32_R2
1005 select SYS_SUPPORTS_32BIT_KERNEL
1006 select SYS_SUPPORTS_LITTLE_ENDIAN
1007 select SYS_SUPPORTS_BIG_ENDIAN
1009 select CPU_MIPSR2_IRQ_VI
1021 select DMA_NONCOHERENT
1023 select SYS_HAS_CPU_MIPS32_R1
1024 select SYS_HAS_EARLY_PRINTK
1025 select SYS_SUPPORTS_32BIT_KERNEL
1028 config SWAP_IO_SPACE
1031 config SERIAL_RM9000
1034 config SGI_HAS_INDYDOG
1046 config SGI_HAS_ZILOG
1049 config SGI_HAS_I8042
1052 config DEFAULT_SGI_PARTITION
1064 config MIPS_L1_CACHE_SHIFT
1066 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1067 default "6" if MIPS_CPU_SCACHE
1068 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1071 config HAVE_STD_PC_SERIAL_PORT
1075 bool "ARC console support"
1076 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1080 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1085 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1094 menu "CPU selection"
1100 config CPU_LOONGSON2E
1102 depends on SYS_HAS_CPU_LOONGSON2E
1103 select CPU_LOONGSON2
1105 The Loongson 2E processor implements the MIPS III instruction set
1106 with many extensions.
1108 It has an internal FPGA northbridge, which is compatiable to
1111 config CPU_LOONGSON2F
1113 depends on SYS_HAS_CPU_LOONGSON2F
1114 select CPU_LOONGSON2
1116 select ARCH_REQUIRE_GPIOLIB
1118 The Loongson 2F processor implements the MIPS III instruction set
1119 with many extensions.
1121 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1122 have a similar programming interface with FPGA northbridge used in
1125 config CPU_MIPS32_R1
1126 bool "MIPS32 Release 1"
1127 depends on SYS_HAS_CPU_MIPS32_R1
1128 select CPU_HAS_PREFETCH
1129 select CPU_SUPPORTS_32BIT_KERNEL
1130 select CPU_SUPPORTS_HIGHMEM
1132 Choose this option to build a kernel for release 1 or later of the
1133 MIPS32 architecture. Most modern embedded systems with a 32-bit
1134 MIPS processor are based on a MIPS32 processor. If you know the
1135 specific type of processor in your system, choose those that one
1136 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1137 Release 2 of the MIPS32 architecture is available since several
1138 years so chances are you even have a MIPS32 Release 2 processor
1139 in which case you should choose CPU_MIPS32_R2 instead for better
1142 config CPU_MIPS32_R2
1143 bool "MIPS32 Release 2"
1144 depends on SYS_HAS_CPU_MIPS32_R2
1145 select CPU_HAS_PREFETCH
1146 select CPU_SUPPORTS_32BIT_KERNEL
1147 select CPU_SUPPORTS_HIGHMEM
1149 Choose this option to build a kernel for release 2 or later of the
1150 MIPS32 architecture. Most modern embedded systems with a 32-bit
1151 MIPS processor are based on a MIPS32 processor. If you know the
1152 specific type of processor in your system, choose those that one
1153 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1155 config CPU_MIPS64_R1
1156 bool "MIPS64 Release 1"
1157 depends on SYS_HAS_CPU_MIPS64_R1
1158 select CPU_HAS_PREFETCH
1159 select CPU_SUPPORTS_32BIT_KERNEL
1160 select CPU_SUPPORTS_64BIT_KERNEL
1161 select CPU_SUPPORTS_HIGHMEM
1162 select CPU_SUPPORTS_HUGEPAGES
1164 Choose this option to build a kernel for release 1 or later of the
1165 MIPS64 architecture. Many modern embedded systems with a 64-bit
1166 MIPS processor are based on a MIPS64 processor. If you know the
1167 specific type of processor in your system, choose those that one
1168 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1169 Release 2 of the MIPS64 architecture is available since several
1170 years so chances are you even have a MIPS64 Release 2 processor
1171 in which case you should choose CPU_MIPS64_R2 instead for better
1174 config CPU_MIPS64_R2
1175 bool "MIPS64 Release 2"
1176 depends on SYS_HAS_CPU_MIPS64_R2
1177 select CPU_HAS_PREFETCH
1178 select CPU_SUPPORTS_32BIT_KERNEL
1179 select CPU_SUPPORTS_64BIT_KERNEL
1180 select CPU_SUPPORTS_HIGHMEM
1181 select CPU_SUPPORTS_HUGEPAGES
1183 Choose this option to build a kernel for release 2 or later of the
1184 MIPS64 architecture. Many modern embedded systems with a 64-bit
1185 MIPS processor are based on a MIPS64 processor. If you know the
1186 specific type of processor in your system, choose those that one
1187 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1191 depends on SYS_HAS_CPU_R3000
1193 select CPU_SUPPORTS_32BIT_KERNEL
1194 select CPU_SUPPORTS_HIGHMEM
1196 Please make sure to pick the right CPU type. Linux/MIPS is not
1197 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1198 *not* work on R4000 machines and vice versa. However, since most
1199 of the supported machines have an R4000 (or similar) CPU, R4x00
1200 might be a safe bet. If the resulting kernel does not work,
1201 try to recompile with R3000.
1205 depends on SYS_HAS_CPU_TX39XX
1206 select CPU_SUPPORTS_32BIT_KERNEL
1210 depends on SYS_HAS_CPU_VR41XX
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_64BIT_KERNEL
1214 The options selects support for the NEC VR4100 series of processors.
1215 Only choose this option if you have one of these processors as a
1216 kernel built with this option will not run on any other type of
1217 processor or vice versa.
1221 depends on SYS_HAS_CPU_R4300
1222 select CPU_SUPPORTS_32BIT_KERNEL
1223 select CPU_SUPPORTS_64BIT_KERNEL
1225 MIPS Technologies R4300-series processors.
1229 depends on SYS_HAS_CPU_R4X00
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1233 MIPS Technologies R4000-series processors other than 4300, including
1234 the R4000, R4400, R4600, and 4700.
1238 depends on SYS_HAS_CPU_TX49XX
1239 select CPU_HAS_PREFETCH
1240 select CPU_SUPPORTS_32BIT_KERNEL
1241 select CPU_SUPPORTS_64BIT_KERNEL
1245 depends on SYS_HAS_CPU_R5000
1246 select CPU_SUPPORTS_32BIT_KERNEL
1247 select CPU_SUPPORTS_64BIT_KERNEL
1249 MIPS Technologies R5000-series processors other than the Nevada.
1253 depends on SYS_HAS_CPU_R5432
1254 select CPU_SUPPORTS_32BIT_KERNEL
1255 select CPU_SUPPORTS_64BIT_KERNEL
1259 depends on SYS_HAS_CPU_R5500
1260 select CPU_SUPPORTS_32BIT_KERNEL
1261 select CPU_SUPPORTS_64BIT_KERNEL
1262 select CPU_SUPPORTS_HUGEPAGES
1264 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1269 depends on EXPERIMENTAL
1270 depends on SYS_HAS_CPU_R6000
1271 select CPU_SUPPORTS_32BIT_KERNEL
1273 MIPS Technologies R6000 and R6000A series processors. Note these
1274 processors are extremely rare and the support for them is incomplete.
1278 depends on SYS_HAS_CPU_NEVADA
1279 select CPU_SUPPORTS_32BIT_KERNEL
1280 select CPU_SUPPORTS_64BIT_KERNEL
1282 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1286 depends on EXPERIMENTAL
1287 depends on SYS_HAS_CPU_R8000
1288 select CPU_HAS_PREFETCH
1289 select CPU_SUPPORTS_64BIT_KERNEL
1291 MIPS Technologies R8000 processors. Note these processors are
1292 uncommon and the support for them is incomplete.
1296 depends on SYS_HAS_CPU_R10000
1297 select CPU_HAS_PREFETCH
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1300 select CPU_SUPPORTS_HIGHMEM
1302 MIPS Technologies R10000-series processors.
1306 depends on SYS_HAS_CPU_RM7000
1307 select CPU_HAS_PREFETCH
1308 select CPU_SUPPORTS_32BIT_KERNEL
1309 select CPU_SUPPORTS_64BIT_KERNEL
1310 select CPU_SUPPORTS_HIGHMEM
1314 depends on SYS_HAS_CPU_RM9000
1315 select CPU_HAS_PREFETCH
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1318 select CPU_SUPPORTS_HIGHMEM
1319 select WEAK_ORDERING
1323 depends on SYS_HAS_CPU_SB1
1324 select CPU_SUPPORTS_32BIT_KERNEL
1325 select CPU_SUPPORTS_64BIT_KERNEL
1326 select CPU_SUPPORTS_HIGHMEM
1327 select WEAK_ORDERING
1329 config CPU_CAVIUM_OCTEON
1330 bool "Cavium Octeon processor"
1331 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1333 select IRQ_CPU_OCTEON
1334 select CPU_HAS_PREFETCH
1335 select CPU_SUPPORTS_64BIT_KERNEL
1336 select SYS_SUPPORTS_SMP
1337 select NR_CPUS_DEFAULT_16
1338 select WEAK_ORDERING
1339 select CPU_SUPPORTS_HIGHMEM
1340 select CPU_SUPPORTS_HUGEPAGES
1342 The Cavium Octeon processor is a highly integrated chip containing
1343 many ethernet hardware widgets for networking tasks. The processor
1344 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1345 Full details can be found at http://www.caviumnetworks.com.
1347 config CPU_BMIPS3300
1349 depends on SYS_HAS_CPU_BMIPS3300
1350 select DMA_NONCOHERENT
1352 select SWAP_IO_SPACE
1353 select SYS_SUPPORTS_32BIT_KERNEL
1354 select WEAK_ORDERING
1356 Broadcom BMIPS3300 processors.
1358 config CPU_BMIPS4350
1360 depends on SYS_HAS_CPU_BMIPS4350
1361 select CPU_SUPPORTS_32BIT_KERNEL
1362 select DMA_NONCOHERENT
1364 select SWAP_IO_SPACE
1365 select SYS_SUPPORTS_SMP
1366 select SYS_SUPPORTS_HOTPLUG_CPU
1367 select WEAK_ORDERING
1369 Broadcom BMIPS4350 ("VIPER") processors.
1371 config CPU_BMIPS4380
1373 depends on SYS_HAS_CPU_BMIPS4380
1374 select CPU_SUPPORTS_32BIT_KERNEL
1375 select DMA_NONCOHERENT
1377 select SWAP_IO_SPACE
1378 select SYS_SUPPORTS_SMP
1379 select SYS_SUPPORTS_HOTPLUG_CPU
1380 select WEAK_ORDERING
1382 Broadcom BMIPS4380 processors.
1384 config CPU_BMIPS5000
1386 depends on SYS_HAS_CPU_BMIPS5000
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1389 select DMA_NONCOHERENT
1391 select SWAP_IO_SPACE
1392 select SYS_SUPPORTS_SMP
1393 select SYS_SUPPORTS_HOTPLUG_CPU
1394 select WEAK_ORDERING
1396 Broadcom BMIPS5000 processors.
1401 config CPU_NOP_WORKAROUNDS
1404 config CPU_JUMP_WORKAROUNDS
1407 config CPU_LOONGSON2F_WORKAROUNDS
1408 bool "Loongson 2F Workarounds"
1410 select CPU_NOP_WORKAROUNDS
1411 select CPU_JUMP_WORKAROUNDS
1413 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1414 require workarounds. Without workarounds the system may hang
1415 unexpectedly. For more information please refer to the gas
1416 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1418 Loongson 2F03 and later have fixed these issues and no workarounds
1419 are needed. The workarounds have no significant side effect on them
1420 but may decrease the performance of the system so this option should
1421 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1424 If unsure, please say Y.
1425 endif # CPU_LOONGSON2F
1427 config SYS_SUPPORTS_ZBOOT
1429 select HAVE_KERNEL_GZIP
1430 select HAVE_KERNEL_BZIP2
1431 select HAVE_KERNEL_LZMA
1432 select HAVE_KERNEL_LZO
1434 config SYS_SUPPORTS_ZBOOT_UART16550
1436 select SYS_SUPPORTS_ZBOOT
1438 config CPU_LOONGSON2
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_64BIT_KERNEL
1442 select CPU_SUPPORTS_HIGHMEM
1444 config SYS_HAS_CPU_LOONGSON2E
1447 config SYS_HAS_CPU_LOONGSON2F
1449 select CPU_SUPPORTS_CPUFREQ
1450 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1451 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1453 config SYS_HAS_CPU_MIPS32_R1
1456 config SYS_HAS_CPU_MIPS32_R2
1459 config SYS_HAS_CPU_MIPS64_R1
1462 config SYS_HAS_CPU_MIPS64_R2
1465 config SYS_HAS_CPU_R3000
1468 config SYS_HAS_CPU_TX39XX
1471 config SYS_HAS_CPU_VR41XX
1474 config SYS_HAS_CPU_R4300
1477 config SYS_HAS_CPU_R4X00
1480 config SYS_HAS_CPU_TX49XX
1483 config SYS_HAS_CPU_R5000
1486 config SYS_HAS_CPU_R5432
1489 config SYS_HAS_CPU_R5500
1492 config SYS_HAS_CPU_R6000
1495 config SYS_HAS_CPU_NEVADA
1498 config SYS_HAS_CPU_R8000
1501 config SYS_HAS_CPU_R10000
1504 config SYS_HAS_CPU_RM7000
1507 config SYS_HAS_CPU_RM9000
1510 config SYS_HAS_CPU_SB1
1513 config SYS_HAS_CPU_CAVIUM_OCTEON
1516 config SYS_HAS_CPU_BMIPS3300
1519 config SYS_HAS_CPU_BMIPS4350
1522 config SYS_HAS_CPU_BMIPS4380
1525 config SYS_HAS_CPU_BMIPS5000
1529 # CPU may reorder R->R, R->W, W->R, W->W
1530 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1532 config WEAK_ORDERING
1536 # CPU may reorder reads and writes beyond LL/SC
1537 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1539 config WEAK_REORDERING_BEYOND_LLSC
1544 # These two indicate any level of the MIPS32 and MIPS64 architecture
1548 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1552 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1555 # These two indicate the revision of the architecture, either Release 1 or Release 2
1559 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1563 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1565 config SYS_SUPPORTS_32BIT_KERNEL
1567 config SYS_SUPPORTS_64BIT_KERNEL
1569 config CPU_SUPPORTS_32BIT_KERNEL
1571 config CPU_SUPPORTS_64BIT_KERNEL
1573 config CPU_SUPPORTS_CPUFREQ
1575 config CPU_SUPPORTS_ADDRWINCFG
1577 config CPU_SUPPORTS_HUGEPAGES
1579 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1581 config MIPS_PGD_C0_CONTEXT
1583 default y if 64BIT && CPU_MIPSR2
1586 # Set to y for ptrace access to watch registers.
1588 config HARDWARE_WATCHPOINTS
1590 default y if CPU_MIPSR1 || CPU_MIPSR2
1596 prompt "Kernel code model"
1598 You should only select this option if you have a workload that
1599 actually benefits from 64-bit processing or if your machine has
1600 large memory. You will only be presented a single option in this
1601 menu if your system does not support both 32-bit and 64-bit kernels.
1604 bool "32-bit kernel"
1605 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1608 Select this option if you want to build a 32-bit kernel.
1610 bool "64-bit kernel"
1611 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1612 select HAVE_SYSCALL_WRAPPERS
1614 Select this option if you want to build a 64-bit kernel.
1619 prompt "Kernel page size"
1620 default PAGE_SIZE_4KB
1622 config PAGE_SIZE_4KB
1624 depends on !CPU_LOONGSON2
1626 This option select the standard 4kB Linux page size. On some
1627 R3000-family processors this is the only available page size. Using
1628 4kB page size will minimize memory consumption and is therefore
1629 recommended for low memory systems.
1631 config PAGE_SIZE_8KB
1633 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1635 Using 8kB page size will result in higher performance kernel at
1636 the price of higher memory consumption. This option is available
1637 only on R8000 and cnMIPS processors. Note that you will need a
1638 suitable Linux distribution to support this.
1640 config PAGE_SIZE_16KB
1642 depends on !CPU_R3000 && !CPU_TX39XX
1644 Using 16kB page size will result in higher performance kernel at
1645 the price of higher memory consumption. This option is available on
1646 all non-R3000 family processors. Note that you will need a suitable
1647 Linux distribution to support this.
1649 config PAGE_SIZE_32KB
1651 depends on CPU_CAVIUM_OCTEON
1653 Using 32kB page size will result in higher performance kernel at
1654 the price of higher memory consumption. This option is available
1655 only on cnMIPS cores. Note that you will need a suitable Linux
1656 distribution to support this.
1658 config PAGE_SIZE_64KB
1660 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1662 Using 64kB page size will result in higher performance kernel at
1663 the price of higher memory consumption. This option is available on
1664 all non-R3000 family processor. Not that at the time of this
1665 writing this option is still high experimental.
1669 config FORCE_MAX_ZONEORDER
1670 int "Maximum zone order"
1671 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1672 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1673 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1674 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1678 The kernel memory allocator divides physically contiguous memory
1679 blocks into "zones", where each zone is a power of two number of
1680 pages. This option selects the largest power of two that the kernel
1681 keeps in the memory allocator. If you need to allocate very large
1682 blocks of physically contiguous memory, then you may need to
1683 increase this value.
1685 This config option is actually maximum order plus one. For example,
1686 a value of 11 means that the largest free memory block is 2^10 pages.
1688 The page size is not necessarily 4KB. Keep this in mind
1689 when choosing a value for this option.
1694 config IP22_CPU_SCACHE
1699 # Support for a MIPS32 / MIPS64 style S-caches
1701 config MIPS_CPU_SCACHE
1705 config R5000_CPU_SCACHE
1709 config RM7000_CPU_SCACHE
1713 config SIBYTE_DMA_PAGEOPS
1714 bool "Use DMA to clear/copy pages"
1717 Instead of using the CPU to zero and copy pages, use a Data Mover
1718 channel. These DMA channels are otherwise unused by the standard
1719 SiByte Linux port. Seems to give a small performance benefit.
1721 config CPU_HAS_PREFETCH
1725 prompt "MIPS MT options"
1727 config MIPS_MT_DISABLED
1728 bool "Disable multithreading support."
1730 Use this option if your workload can't take advantage of
1731 MIPS hardware multithreading support. On systems that don't have
1732 the option of an MT-enabled processor this option will be the only
1733 option in this menu.
1736 bool "Use 1 TC on each available VPE for SMP"
1737 depends on SYS_SUPPORTS_MULTITHREADING
1738 select CPU_MIPSR2_IRQ_VI
1739 select CPU_MIPSR2_IRQ_EI
1741 select NR_CPUS_DEFAULT_2
1743 select SYS_SUPPORTS_SCHED_SMT if SMP
1744 select SYS_SUPPORTS_SMP
1747 This is a kernel model which is known a VSMP but lately has been
1748 marketesed into SMVP.
1749 Virtual SMP uses the processor's VPEs to implement virtual
1750 processors. In currently available configuration of the 34K processor
1751 this allows for a dual processor. Both processors will share the same
1752 primary caches; each will obtain the half of the TLB for it's own
1753 exclusive use. For a layman this model can be described as similar to
1754 what Intel calls Hyperthreading.
1756 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1759 bool "SMTC: Use all TCs on all VPEs for SMP"
1760 depends on CPU_MIPS32_R2
1761 #depends on CPU_MIPS64_R2 # once there is hardware ...
1762 depends on SYS_SUPPORTS_MULTITHREADING
1763 select CPU_MIPSR2_IRQ_VI
1764 select CPU_MIPSR2_IRQ_EI
1766 select NR_CPUS_DEFAULT_8
1768 select SYS_SUPPORTS_SMP
1771 This is a kernel model which is known a SMTC or lately has been
1772 marketesed into SMVP.
1773 is presenting the available TC's of the core as processors to Linux.
1774 On currently available 34K processors this means a Linux system will
1775 see up to 5 processors. The implementation of the SMTC kernel differs
1776 significantly from VSMP and cannot efficiently coexist in the same
1777 kernel binary so the choice between VSMP and SMTC is a compile time
1780 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1788 bool "SMT (multithreading) scheduler support"
1789 depends on SYS_SUPPORTS_SCHED_SMT
1792 SMT scheduler support improves the CPU scheduler's decision making
1793 when dealing with MIPS MT enabled cores at a cost of slightly
1794 increased overhead in some places. If unsure say N here.
1796 config SYS_SUPPORTS_SCHED_SMT
1800 config SYS_SUPPORTS_MULTITHREADING
1803 config MIPS_MT_FPAFF
1804 bool "Dynamic FPU affinity for FP-intensive threads"
1806 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1808 config MIPS_VPE_LOADER
1809 bool "VPE loader support."
1810 depends on SYS_SUPPORTS_MULTITHREADING
1811 select CPU_MIPSR2_IRQ_VI
1812 select CPU_MIPSR2_IRQ_EI
1815 Includes a loader for loading an elf relocatable object
1816 onto another VPE and running it.
1818 config MIPS_MT_SMTC_IM_BACKSTOP
1819 bool "Use per-TC register bits as backstop for inhibited IM bits"
1820 depends on MIPS_MT_SMTC
1823 To support multiple TC microthreads acting as "CPUs" within
1824 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1825 during interrupt handling. To support legacy drivers and interrupt
1826 controller management code, SMTC has a "backstop" to track and
1827 if necessary restore the interrupt mask. This has some performance
1828 impact on interrupt service overhead.
1830 config MIPS_MT_SMTC_IRQAFF
1831 bool "Support IRQ affinity API"
1832 depends on MIPS_MT_SMTC
1835 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1836 for SMTC Linux kernel. Requires platform support, of which
1837 an example can be found in the MIPS kernel i8259 and Malta
1838 platform code. Adds some overhead to interrupt dispatch, and
1839 should be used only if you know what you are doing.
1841 config MIPS_VPE_LOADER_TOM
1842 bool "Load VPE program into memory hidden from linux"
1843 depends on MIPS_VPE_LOADER
1846 The loader can use memory that is present but has been hidden from
1847 Linux using the kernel command line option "mem=xxMB". It's up to
1848 you to ensure the amount you put in the option and the space your
1849 program requires is less or equal to the amount physically present.
1851 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1852 config MIPS_VPE_APSP_API
1853 bool "Enable support for AP/SP API (RTLX)"
1854 depends on MIPS_VPE_LOADER
1857 config MIPS_APSP_KSPD
1859 depends on MIPS_VPE_APSP_API
1862 KSPD is a kernel daemon that accepts syscall requests from the SP
1863 side, actions them and returns the results. It also handles the
1864 "exit" syscall notifying other kernel modules the SP program is
1865 exiting. You probably want to say yes here.
1868 bool "MIPS CMP framework support"
1869 depends on SYS_SUPPORTS_MIPS_CMP
1871 select SYS_SUPPORTS_SMP
1872 select SYS_SUPPORTS_SCHED_SMT if SMP
1873 select WEAK_ORDERING
1876 This is a placeholder option for the GCMP work. It will need to
1877 be handled differently...
1879 config SB1_PASS_1_WORKAROUNDS
1881 depends on CPU_SB1_PASS_1
1884 config SB1_PASS_2_WORKAROUNDS
1886 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1889 config SB1_PASS_2_1_WORKAROUNDS
1891 depends on CPU_SB1 && CPU_SB1_PASS_2
1894 config 64BIT_PHYS_ADDR
1897 config ARCH_PHYS_ADDR_T_64BIT
1898 def_bool 64BIT_PHYS_ADDR
1900 config CPU_HAS_SMARTMIPS
1901 depends on SYS_SUPPORTS_SMARTMIPS
1902 bool "Support for the SmartMIPS ASE"
1904 SmartMIPS is a extension of the MIPS32 architecture aimed at
1905 increased security at both hardware and software level for
1906 smartcards. Enabling this option will allow proper use of the
1907 SmartMIPS instructions by Linux applications. However a kernel with
1908 this option will not work on a MIPS core without SmartMIPS core. If
1909 you don't know you probably don't have SmartMIPS and should say N
1916 # Vectored interrupt mode is an R2 feature
1918 config CPU_MIPSR2_IRQ_VI
1922 # Extended interrupt mode is an R2 feature
1924 config CPU_MIPSR2_IRQ_EI
1929 depends on !CPU_R3000
1932 config GENERIC_CLOCKEVENTS_BROADCAST
1938 config CPU_DADDI_WORKAROUNDS
1941 config CPU_R4000_WORKAROUNDS
1943 select CPU_R4400_WORKAROUNDS
1945 config CPU_R4400_WORKAROUNDS
1949 # - Highmem only makes sense for the 32-bit kernel.
1950 # - The current highmem code will only work properly on physically indexed
1951 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1952 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1953 # moment we protect the user and offer the highmem option only on machines
1954 # where it's known to be safe. This will not offer highmem on a few systems
1955 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1956 # indexed CPUs but we're playing safe.
1957 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1958 # know they might have memory configurations that could make use of highmem
1962 bool "High Memory Support"
1963 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1965 config CPU_SUPPORTS_HIGHMEM
1968 config SYS_SUPPORTS_HIGHMEM
1971 config SYS_SUPPORTS_SMARTMIPS
1974 config ARCH_FLATMEM_ENABLE
1976 depends on !NUMA && !CPU_LOONGSON2
1978 config ARCH_DISCONTIGMEM_ENABLE
1980 default y if SGI_IP27
1982 Say Y to support efficient handling of discontiguous physical memory,
1983 for architectures which are either NUMA (Non-Uniform Memory Access)
1984 or have huge holes in the physical address space for other reasons.
1985 See <file:Documentation/vm/numa> for more.
1987 config ARCH_POPULATES_NODE_MAP
1990 config ARCH_SPARSEMEM_ENABLE
1992 select SPARSEMEM_STATIC
1996 depends on SYS_SUPPORTS_NUMA
1998 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1999 Access). This option improves performance on systems with more
2000 than two nodes; on two node systems it is generally better to
2001 leave it disabled; on single node systems disable this option
2004 config SYS_SUPPORTS_NUMA
2010 depends on NEED_MULTIPLE_NODES
2012 config HW_PERF_EVENTS
2013 bool "Enable hardware performance counter support for perf events"
2014 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2017 Enable hardware performance counter support for perf events. If
2018 disabled, perf events will use software events only.
2023 bool "Multi-Processing support"
2024 depends on SYS_SUPPORTS_SMP
2026 select USE_GENERIC_SMP_HELPERS
2028 This enables support for systems with more than one CPU. If you have
2029 a system with only one CPU, like most personal computers, say N. If
2030 you have a system with more than one CPU, say Y.
2032 If you say N here, the kernel will run on single and multiprocessor
2033 machines, but will use only one CPU of a multiprocessor machine. If
2034 you say Y here, the kernel will run on many, but not all,
2035 singleprocessor machines. On a singleprocessor machine, the kernel
2036 will run faster if you say N here.
2038 People using multiprocessor machines who say Y here should also say
2039 Y to "Enhanced Real Time Clock Support", below.
2041 See also the SMP-HOWTO available at
2042 <http://www.tldp.org/docs.html#howto>.
2044 If you don't know what to do here, say N.
2049 config SYS_SUPPORTS_MIPS_CMP
2052 config SYS_SUPPORTS_SMP
2055 config NR_CPUS_DEFAULT_1
2058 config NR_CPUS_DEFAULT_2
2061 config NR_CPUS_DEFAULT_4
2064 config NR_CPUS_DEFAULT_8
2067 config NR_CPUS_DEFAULT_16
2070 config NR_CPUS_DEFAULT_32
2073 config NR_CPUS_DEFAULT_64
2077 int "Maximum number of CPUs (2-64)"
2078 range 1 64 if NR_CPUS_DEFAULT_1
2080 default "1" if NR_CPUS_DEFAULT_1
2081 default "2" if NR_CPUS_DEFAULT_2
2082 default "4" if NR_CPUS_DEFAULT_4
2083 default "8" if NR_CPUS_DEFAULT_8
2084 default "16" if NR_CPUS_DEFAULT_16
2085 default "32" if NR_CPUS_DEFAULT_32
2086 default "64" if NR_CPUS_DEFAULT_64
2088 This allows you to specify the maximum number of CPUs which this
2089 kernel will support. The maximum supported value is 32 for 32-bit
2090 kernel and 64 for 64-bit kernels; the minimum value which makes
2091 sense is 1 for Qemu (useful only for kernel debugging purposes)
2092 and 2 for all others.
2094 This is purely to save memory - each supported CPU adds
2095 approximately eight kilobytes to the kernel image. For best
2096 performance should round up your number of processors to the next
2099 source "kernel/time/Kconfig"
2102 # Timer Interrupt Frequency Configuration
2106 prompt "Timer frequency"
2109 Allows the configuration of the timer frequency.
2112 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2115 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2118 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2121 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2124 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2127 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2130 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2134 config SYS_SUPPORTS_48HZ
2137 config SYS_SUPPORTS_100HZ
2140 config SYS_SUPPORTS_128HZ
2143 config SYS_SUPPORTS_250HZ
2146 config SYS_SUPPORTS_256HZ
2149 config SYS_SUPPORTS_1000HZ
2152 config SYS_SUPPORTS_1024HZ
2155 config SYS_SUPPORTS_ARBIT_HZ
2157 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2158 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2159 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2160 !SYS_SUPPORTS_1024HZ
2165 default 100 if HZ_100
2166 default 128 if HZ_128
2167 default 250 if HZ_250
2168 default 256 if HZ_256
2169 default 1000 if HZ_1000
2170 default 1024 if HZ_1024
2172 source "kernel/Kconfig.preempt"
2174 config MIPS_INSANE_LARGE
2175 bool "Support for large 64-bit configurations"
2176 depends on CPU_R10000 && 64BIT
2178 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2179 previous 64-bit processors which only supported 40 bit / 1TB. If you
2180 need processes of more than 1TB virtual address space, say Y here.
2181 This will result in additional memory usage, so it is not
2182 recommended for normal users.
2185 bool "Kexec system call (EXPERIMENTAL)"
2186 depends on EXPERIMENTAL
2188 kexec is a system call that implements the ability to shutdown your
2189 current kernel, and to start another kernel. It is like a reboot
2190 but it is independent of the system firmware. And like a reboot
2191 you can start any kernel with it, not just Linux.
2193 The name comes from the similarity to the exec system call.
2195 It is an ongoing process to be certain the hardware in a machine
2196 is properly shutdown, so do not be surprised if this code does not
2197 initially work for you. It may help to enable device hotplugging
2198 support. As of this writing the exact hardware interface is
2199 strongly in flux, so no good recommendation can be made.
2202 bool "Enable seccomp to safely compute untrusted bytecode"
2206 This kernel feature is useful for number crunching applications
2207 that may need to compute untrusted bytecode during their
2208 execution. By using pipes or other transports made available to
2209 the process as file descriptors supporting the read/write
2210 syscalls, it's possible to isolate those applications in
2211 their own address space using seccomp. Once seccomp is
2212 enabled via /proc/<pid>/seccomp, it cannot be disabled
2213 and the task is only allowed to execute a few safe syscalls
2214 defined by each seccomp mode.
2216 If unsure, say Y. Only embedded should say N here.
2219 bool "Flattened Device Tree support"
2223 Include support for flattened device tree machine descriptions.
2227 config LOCKDEP_SUPPORT
2231 config STACKTRACE_SUPPORT
2235 source "init/Kconfig"
2237 source "kernel/Kconfig.freezer"
2239 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2247 bool "Support for PCI controller"
2248 depends on HW_HAS_PCI
2251 Find out whether you have a PCI motherboard. PCI is the name of a
2252 bus system, i.e. the way the CPU talks to the other stuff inside
2253 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2259 source "drivers/pci/Kconfig"
2262 # ISA support is now enabled via select. Too many systems still have the one
2263 # or other ISA chip on the board that users don't know about so don't expect
2264 # users to choose the right thing ...
2271 depends on HW_HAS_EISA
2273 select GENERIC_ISA_DMA
2275 The Extended Industry Standard Architecture (EISA) bus was
2276 developed as an open alternative to the IBM MicroChannel bus.
2278 The EISA bus provided some of the features of the IBM MicroChannel
2279 bus while maintaining backward compatibility with cards made for
2280 the older ISA bus. The EISA bus saw limited use between 1988 and
2281 1995 when it was made obsolete by the PCI bus.
2283 Say Y here if you are building a kernel for an EISA-based machine.
2287 source "drivers/eisa/Kconfig"
2290 bool "TURBOchannel support"
2291 depends on MACH_DECSTATION
2293 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2294 processors. TURBOchannel programming specifications are available
2296 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2298 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2299 Linux driver support status is documented at:
2300 <http://www.linux-mips.org/wiki/DECstation>
2303 # bool "Access.Bus support"
2312 select MIPS_EXTERNAL_TIMER
2317 source "drivers/pcmcia/Kconfig"
2319 source "drivers/pci/hotplug/Kconfig"
2323 menu "Executable file formats"
2325 source "fs/Kconfig.binfmt"
2330 config MIPS32_COMPAT
2331 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2334 Select this option if you want Linux/MIPS 32-bit binary
2335 compatibility. Since all software available for Linux/MIPS is
2336 currently 32-bit you should say Y here.
2340 depends on MIPS32_COMPAT
2343 config SYSVIPC_COMPAT
2345 depends on COMPAT && SYSVIPC
2349 bool "Kernel support for o32 binaries"
2350 depends on MIPS32_COMPAT
2352 Select this option if you want to run o32 binaries. These are pure
2353 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2354 existing binaries are in this format.
2359 bool "Kernel support for n32 binaries"
2360 depends on MIPS32_COMPAT
2362 Select this option if you want to run n32 binaries. These are
2363 64-bit binaries using 32-bit quantities for addressing and certain
2364 data that would normally be 64-bit. They are used in special
2371 default y if MIPS32_O32 || MIPS32_N32
2375 menu "Power management options"
2377 config ARCH_HIBERNATION_POSSIBLE
2379 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2381 config ARCH_SUSPEND_POSSIBLE
2383 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2385 source "kernel/power/Kconfig"
2389 source "arch/mips/kernel/cpufreq/Kconfig"
2391 source "net/Kconfig"
2393 source "drivers/Kconfig"
2397 source "arch/mips/Kconfig.debug"
2399 source "security/Kconfig"
2401 source "crypto/Kconfig"
2403 source "lib/Kconfig"