4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
10 select HAVE_DYNAMIC_FTRACE
11 select HAVE_FTRACE_MCOUNT_RECORD
12 select HAVE_FUNCTION_GRAPH_TRACER
14 select HAVE_KRETPROBES
15 select RTC_LIB if !MACH_LOONGSON
16 select GENERIC_ATOMIC64 if !64BIT
18 menu "Machine selection"
28 bool "Alchemy processor based machines"
29 select 64BIT_PHYS_ADDR
33 select SYS_HAS_CPU_MIPS32_R1
34 select SYS_SUPPORTS_32BIT_KERNEL
35 select SYS_SUPPORTS_APM_EMULATION
37 select ARCH_WANT_OPTIONAL_GPIOLIB
38 select SYS_SUPPORTS_ZBOOT
41 bool "Texas Instruments AR7"
43 select DMA_NONCOHERENT
49 select SYS_HAS_CPU_MIPS32_R1
50 select SYS_HAS_EARLY_PRINTK
51 select SYS_SUPPORTS_32BIT_KERNEL
52 select SYS_SUPPORTS_LITTLE_ENDIAN
53 select SYS_SUPPORTS_ZBOOT_UART16550
54 select ARCH_REQUIRE_GPIOLIB
58 Support for the Texas Instruments AR7 System-on-a-Chip
59 family: TNETD7100, 7200 and 7300.
62 bool "Broadcom BCM47XX based boards"
65 select DMA_NONCOHERENT
68 select SYS_HAS_CPU_MIPS32_R1
69 select SYS_SUPPORTS_32BIT_KERNEL
70 select SYS_SUPPORTS_LITTLE_ENDIAN
72 select SSB_DRIVER_MIPS
73 select SSB_DRIVER_EXTIF
75 select SSB_B43_PCI_BRIDGE if PCI
76 select SSB_PCICORE_HOSTMODE if PCI
78 select SYS_HAS_EARLY_PRINTK
81 Support for BCM47XX based boards
84 bool "Broadcom BCM63XX based boards"
87 select DMA_NONCOHERENT
89 select SYS_HAS_CPU_MIPS32_R1
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_BIG_ENDIAN
92 select SYS_HAS_EARLY_PRINTK
94 select ARCH_REQUIRE_GPIOLIB
96 Support for BCM63XX based boards
103 select DMA_NONCOHERENT
109 select PCI_GT64XXX_PCI0
111 select SYS_HAS_CPU_NEVADA
112 select SYS_HAS_EARLY_PRINTK
113 select SYS_SUPPORTS_32BIT_KERNEL
114 select SYS_SUPPORTS_64BIT_KERNEL
115 select SYS_SUPPORTS_LITTLE_ENDIAN
117 config MACH_DECSTATION
124 select CPU_DADDI_WORKAROUNDS if 64BIT
125 select CPU_R4000_WORKAROUNDS if 64BIT
126 select CPU_R4400_WORKAROUNDS if 64BIT
127 select DMA_NONCOHERENT
130 select SYS_HAS_CPU_R3000
131 select SYS_HAS_CPU_R4X00
132 select SYS_SUPPORTS_32BIT_KERNEL
133 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
134 select SYS_SUPPORTS_LITTLE_ENDIAN
135 select SYS_SUPPORTS_128HZ
136 select SYS_SUPPORTS_256HZ
137 select SYS_SUPPORTS_1024HZ
139 This enables support for DEC's MIPS based workstations. For details
140 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
141 DECstation porting pages on <http://decstation.unix-ag.org/>.
143 If you have one of the following DECstation Models you definitely
144 want to choose R4xx0 for the CPU Type:
151 otherwise choose R3000.
154 bool "Jazz family of machines"
157 select ARCH_MAY_HAVE_PC_FDC
160 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
161 select GENERIC_ISA_DMA
166 select SYS_HAS_CPU_R4X00
167 select SYS_SUPPORTS_32BIT_KERNEL
168 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
169 select SYS_SUPPORTS_100HZ
171 This a family of machines based on the MIPS R4030 chipset which was
172 used by several vendors to build RISC/os and Windows NT workstations.
173 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
174 Olivetti M700-10 workstations.
177 bool "Ingenic JZ4740 based machines"
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_SUPPORTS_32BIT_KERNEL
180 select SYS_SUPPORTS_LITTLE_ENDIAN
181 select DMA_NONCOHERENT
184 select ARCH_REQUIRE_GPIOLIB
185 select SYS_HAS_EARLY_PRINTK
189 bool "LASAT Networks platforms"
192 select DMA_NONCOHERENT
193 select SYS_HAS_EARLY_PRINTK
196 select PCI_GT64XXX_PCI0
198 select R5000_CPU_SCACHE
199 select SYS_HAS_CPU_R5000
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
202 select SYS_SUPPORTS_LITTLE_ENDIAN
205 bool "Loongson family of machines"
206 select SYS_SUPPORTS_ZBOOT
208 This enables the support of Loongson family of machines.
210 Loongson is a family of general-purpose MIPS-compatible CPUs.
211 developed at Institute of Computing Technology (ICT),
212 Chinese Academy of Sciences (CAS) in the People's Republic
213 of China. The chief architect is Professor Weiwu Hu.
216 bool "MIPS Malta board"
217 select ARCH_MAY_HAVE_PC_FDC
222 select DMA_NONCOHERENT
223 select GENERIC_ISA_DMA
229 select MIPS_BOARDS_GEN
231 select MIPS_CPU_SCACHE
232 select PCI_GT64XXX_PCI0
235 select SYS_HAS_CPU_MIPS32_R1
236 select SYS_HAS_CPU_MIPS32_R2
237 select SYS_HAS_CPU_MIPS64_R1
238 select SYS_HAS_CPU_NEVADA
239 select SYS_HAS_CPU_RM7000
240 select SYS_HAS_EARLY_PRINTK
241 select SYS_SUPPORTS_32BIT_KERNEL
242 select SYS_SUPPORTS_64BIT_KERNEL
243 select SYS_SUPPORTS_BIG_ENDIAN
244 select SYS_SUPPORTS_LITTLE_ENDIAN
245 select SYS_SUPPORTS_MIPS_CMP
246 select SYS_SUPPORTS_MULTITHREADING
247 select SYS_SUPPORTS_SMARTMIPS
248 select SYS_SUPPORTS_ZBOOT
250 This enables support for the MIPS Technologies Malta evaluation
254 bool 'MIPS simulator (MIPSsim)'
257 select DMA_NONCOHERENT
258 select SYS_HAS_EARLY_PRINTK
261 select SYS_HAS_CPU_MIPS32_R1
262 select SYS_HAS_CPU_MIPS32_R2
263 select SYS_HAS_EARLY_PRINTK
264 select SYS_SUPPORTS_32BIT_KERNEL
265 select SYS_SUPPORTS_BIG_ENDIAN
266 select SYS_SUPPORTS_MULTITHREADING
267 select SYS_SUPPORTS_LITTLE_ENDIAN
269 This option enables support for MIPS Technologies MIPSsim software
273 bool "NEC EMMA2RH Mark-eins board"
277 This enables support for the NEC Electronics Mark-eins boards.
280 bool "NEC VR4100 series based machines"
283 select SYS_HAS_CPU_VR41XX
284 select ARCH_REQUIRE_GPIOLIB
287 bool "NXP STB220 board"
290 Support for NXP Semiconductors STB220 Development Board.
297 Support for NXP Semiconductors STB225 Development Board.
300 bool "NXP PNX8550 based JBS board"
302 select SYS_SUPPORTS_LITTLE_ENDIAN
304 config PNX8550_STB810
305 bool "NXP PNX8550 based STB810 board"
307 select SYS_SUPPORTS_LITTLE_ENDIAN
310 bool "PMC-Sierra MSP chipsets"
311 depends on EXPERIMENTAL
312 select DMA_NONCOHERENT
314 select NO_EXCEPT_FILL
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_BIG_ENDIAN
322 select SERIAL_8250_CONSOLE
324 This adds support for the PMC-Sierra family of Multi-Service
325 Processor System-On-A-Chips. These parts include a number
326 of integrated peripherals, interfaces and DSPs in addition to
327 a variety of MIPS cores.
330 bool "PMC-Sierra Yosemite eval board"
339 select SYS_HAS_CPU_RM9000
340 select SYS_HAS_EARLY_PRINTK
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_BIG_ENDIAN
344 select SYS_SUPPORTS_HIGHMEM
345 select SYS_SUPPORTS_SMP
347 Yosemite is an evaluation board for the RM9000x2 processor
348 manufactured by PMC-Sierra.
354 select CPU_MIPSR2_IRQ_VI
355 select CPU_MIPSR2_IRQ_EI
357 select DMA_NONCOHERENT
359 select SYS_HAS_EARLY_PRINTK
360 select SYS_HAS_CPU_MIPS32_R2
361 select SYS_SUPPORTS_32BIT_KERNEL
362 select SYS_SUPPORTS_BIG_ENDIAN
363 select SYS_SUPPORTS_HIGHMEM
364 select USB_OHCI_LITTLE_ENDIAN
366 This enables support for the Cisco PowerTV Platform.
369 bool "SGI IP22 (Indy/Indigo2)"
375 select DEFAULT_SGI_PARTITION
376 select DMA_NONCOHERENT
380 select IP22_CPU_SCACHE
382 select GENERIC_ISA_DMA_SUPPORT_BROKEN
384 select SGI_HAS_INDYDOG
390 select SYS_HAS_CPU_R4X00
391 select SYS_HAS_CPU_R5000
393 # Disable EARLY_PRINTK for now since it leads to overwritten prom
394 # memory during early boot on some machines.
396 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
397 # for a more details discussion
399 # select SYS_HAS_EARLY_PRINTK
400 select SYS_SUPPORTS_32BIT_KERNEL
401 select SYS_SUPPORTS_64BIT_KERNEL
402 select SYS_SUPPORTS_BIG_ENDIAN
404 This are the SGI Indy, Challenge S and Indigo2, as well as certain
405 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
406 that runs on these, say Y here.
409 bool "SGI IP27 (Origin200/2000)"
413 select DEFAULT_SGI_PARTITION
415 select SYS_HAS_EARLY_PRINTK
417 select NR_CPUS_DEFAULT_64
418 select SYS_HAS_CPU_R10000
419 select SYS_SUPPORTS_64BIT_KERNEL
420 select SYS_SUPPORTS_BIG_ENDIAN
421 select SYS_SUPPORTS_NUMA
422 select SYS_SUPPORTS_SMP
424 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
425 workstations. To compile a Linux kernel that runs on these, say Y
429 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
430 depends on EXPERIMENTAL
436 select DEFAULT_SGI_PARTITION
437 select DMA_NONCOHERENT
438 select GENERIC_ISA_DMA_SUPPORT_BROKEN
444 select SGI_HAS_INDYDOG
450 select SYS_HAS_CPU_R10000
452 # Disable EARLY_PRINTK for now since it leads to overwritten prom
453 # memory during early boot on some machines.
455 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
456 # for a more details discussion
458 # select SYS_HAS_EARLY_PRINTK
459 select SYS_SUPPORTS_64BIT_KERNEL
460 select SYS_SUPPORTS_BIG_ENDIAN
462 This is the SGI Indigo2 with R10000 processor. To compile a Linux
463 kernel that runs on these, say Y here.
472 select DMA_NONCOHERENT
475 select R5000_CPU_SCACHE
476 select RM7000_CPU_SCACHE
477 select SYS_HAS_CPU_R5000
478 select SYS_HAS_CPU_R10000 if BROKEN
479 select SYS_HAS_CPU_RM7000
480 select SYS_HAS_CPU_NEVADA
481 select SYS_SUPPORTS_64BIT_KERNEL
482 select SYS_SUPPORTS_BIG_ENDIAN
484 If you want this kernel to run on SGI O2 workstation, say Y here.
487 bool "Sibyte BCM91120C-CRhine"
488 depends on EXPERIMENTAL
491 select SIBYTE_BCM1120
493 select SYS_HAS_CPU_SB1
494 select SYS_SUPPORTS_BIG_ENDIAN
495 select SYS_SUPPORTS_LITTLE_ENDIAN
498 bool "Sibyte BCM91120x-Carmel"
499 depends on EXPERIMENTAL
502 select SIBYTE_BCM1120
504 select SYS_HAS_CPU_SB1
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_LITTLE_ENDIAN
509 bool "Sibyte BCM91125C-CRhone"
510 depends on EXPERIMENTAL
513 select SIBYTE_BCM1125
515 select SYS_HAS_CPU_SB1
516 select SYS_SUPPORTS_BIG_ENDIAN
517 select SYS_SUPPORTS_HIGHMEM
518 select SYS_SUPPORTS_LITTLE_ENDIAN
521 bool "Sibyte BCM91125E-Rhone"
522 depends on EXPERIMENTAL
525 select SIBYTE_BCM1125H
527 select SYS_HAS_CPU_SB1
528 select SYS_SUPPORTS_BIG_ENDIAN
529 select SYS_SUPPORTS_LITTLE_ENDIAN
532 bool "Sibyte BCM91250A-SWARM"
535 select HAVE_PATA_PLATFORM
536 select NR_CPUS_DEFAULT_2
539 select SYS_HAS_CPU_SB1
540 select SYS_SUPPORTS_BIG_ENDIAN
541 select SYS_SUPPORTS_HIGHMEM
542 select SYS_SUPPORTS_LITTLE_ENDIAN
543 select ZONE_DMA32 if 64BIT
545 config SIBYTE_LITTLESUR
546 bool "Sibyte BCM91250C2-LittleSur"
547 depends on EXPERIMENTAL
550 select HAVE_PATA_PLATFORM
551 select NR_CPUS_DEFAULT_2
554 select SYS_HAS_CPU_SB1
555 select SYS_SUPPORTS_BIG_ENDIAN
556 select SYS_SUPPORTS_HIGHMEM
557 select SYS_SUPPORTS_LITTLE_ENDIAN
559 config SIBYTE_SENTOSA
560 bool "Sibyte BCM91250E-Sentosa"
561 depends on EXPERIMENTAL
564 select NR_CPUS_DEFAULT_2
567 select SYS_HAS_CPU_SB1
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_LITTLE_ENDIAN
572 bool "Sibyte BCM91480B-BigSur"
575 select NR_CPUS_DEFAULT_4
576 select SIBYTE_BCM1x80
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_HIGHMEM
581 select SYS_SUPPORTS_LITTLE_ENDIAN
582 select ZONE_DMA32 if 64BIT
585 bool "SNI RM200/300/400"
586 select ARC if CPU_LITTLE_ENDIAN
587 select ARC32 if CPU_LITTLE_ENDIAN
588 select SNIPROM if CPU_BIG_ENDIAN
589 select ARCH_MAY_HAVE_PC_FDC
593 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
594 select DMA_NONCOHERENT
595 select GENERIC_ISA_DMA
602 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
603 select SYS_HAS_CPU_R4X00
604 select SYS_HAS_CPU_R5000
605 select SYS_HAS_CPU_R10000
606 select R5000_CPU_SCACHE
607 select SYS_HAS_EARLY_PRINTK
608 select SYS_SUPPORTS_32BIT_KERNEL
609 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
610 select SYS_SUPPORTS_BIG_ENDIAN
611 select SYS_SUPPORTS_HIGHMEM
612 select SYS_SUPPORTS_LITTLE_ENDIAN
614 The SNI RM200/300/400 are MIPS-based machines manufactured by
615 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
616 Technology and now in turn merged with Fujitsu. Say Y here to
617 support this machine type.
620 bool "Toshiba TX39 series based machines"
623 bool "Toshiba TX49 series based machines"
625 config MIKROTIK_RB532
626 bool "Mikrotik RB532 boards"
629 select DMA_NONCOHERENT
632 select SYS_HAS_CPU_MIPS32_R1
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_LITTLE_ENDIAN
637 select ARCH_REQUIRE_GPIOLIB
639 Support the Mikrotik(tm) RouterBoard 532 series,
640 based on the IDT RC32434 SoC.
643 bool "Wind River PPMC board"
648 select DMA_NONCOHERENT
650 select PCI_GT64XXX_PCI0
652 select SYS_HAS_CPU_MIPS32_R1
653 select SYS_HAS_CPU_MIPS32_R2
654 select SYS_HAS_CPU_MIPS64_R1
655 select SYS_HAS_CPU_NEVADA
656 select SYS_HAS_CPU_RM7000
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_64BIT_KERNEL
659 select SYS_SUPPORTS_BIG_ENDIAN
660 select SYS_SUPPORTS_LITTLE_ENDIAN
662 This enables support for the Wind River MIPS32 4KC PPMC evaluation
663 board, which is based on GT64120 bridge chip.
665 config CAVIUM_OCTEON_SIMULATOR
666 bool "Cavium Networks Octeon Simulator"
668 select 64BIT_PHYS_ADDR
670 select SYS_SUPPORTS_64BIT_KERNEL
671 select SYS_SUPPORTS_BIG_ENDIAN
672 select SYS_SUPPORTS_HIGHMEM
673 select SYS_SUPPORTS_HOTPLUG_CPU
674 select SYS_HAS_CPU_CAVIUM_OCTEON
676 The Octeon simulator is software performance model of the Cavium
677 Octeon Processor. It supports simulating Octeon processors on x86
680 config CAVIUM_OCTEON_REFERENCE_BOARD
681 bool "Cavium Networks Octeon reference board"
683 select 64BIT_PHYS_ADDR
685 select SYS_SUPPORTS_64BIT_KERNEL
686 select SYS_SUPPORTS_BIG_ENDIAN
687 select SYS_SUPPORTS_HIGHMEM
688 select SYS_SUPPORTS_HOTPLUG_CPU
689 select SYS_HAS_EARLY_PRINTK
690 select SYS_HAS_CPU_CAVIUM_OCTEON
693 select ARCH_SUPPORTS_MSI
695 This option supports all of the Octeon reference boards from Cavium
696 Networks. It builds a kernel that dynamically determines the Octeon
697 CPU type and supports all known board reference implementations.
698 Some of the supported boards are:
705 Say Y here for most Octeon reference boards.
709 source "arch/mips/alchemy/Kconfig"
710 source "arch/mips/bcm63xx/Kconfig"
711 source "arch/mips/jazz/Kconfig"
712 source "arch/mips/jz4740/Kconfig"
713 source "arch/mips/lasat/Kconfig"
714 source "arch/mips/pmc-sierra/Kconfig"
715 source "arch/mips/powertv/Kconfig"
716 source "arch/mips/sgi-ip27/Kconfig"
717 source "arch/mips/sibyte/Kconfig"
718 source "arch/mips/txx9/Kconfig"
719 source "arch/mips/vr41xx/Kconfig"
720 source "arch/mips/cavium-octeon/Kconfig"
721 source "arch/mips/loongson/Kconfig"
725 config RWSEM_GENERIC_SPINLOCK
729 config RWSEM_XCHGADD_ALGORITHM
732 config ARCH_HAS_ILOG2_U32
736 config ARCH_HAS_ILOG2_U64
740 config ARCH_SUPPORTS_OPROFILE
742 default y if !MIPS_MT_SMTC
744 config GENERIC_FIND_NEXT_BIT
748 config GENERIC_HWEIGHT
752 config GENERIC_CALIBRATE_DELAY
756 config GENERIC_CLOCKEVENTS
760 config GENERIC_CMOS_UPDATE
764 config SCHED_OMIT_FRAME_POINTER
768 config GENERIC_HARDIRQS_NO__DO_IRQ
772 # Select some configuration options automatically based on user selections.
777 config ARCH_MAY_HAVE_PC_FDC
826 select ARCH_REQUIRE_GPIOLIB
835 config DMA_NONCOHERENT
837 select NEED_DMA_MAP_STATE
839 config NEED_DMA_MAP_STATE
842 config SYS_HAS_EARLY_PRINTK
846 bool "Support for hot-pluggable CPUs"
847 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
849 Say Y here to allow turning CPUs off and on. CPUs can be
850 controlled through /sys/devices/system/cpu.
851 (Note: power management support will enable this option
852 automatically on SMP systems. )
853 Say N if you want to disable CPU hotplug.
855 config SYS_SUPPORTS_HOTPLUG_CPU
870 config MIPS_DISABLE_OBSOLETE_IDE
879 config GENERIC_ISA_DMA
881 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
884 config GENERIC_ISA_DMA_SUPPORT_BROKEN
886 select GENERIC_ISA_DMA
895 # Endianess selection. Sufficiently obscure so many users don't know what to
896 # answer,so we try hard to limit the available choices. Also the use of a
897 # choice statement should be more obvious to the user.
900 prompt "Endianess selection"
902 Some MIPS machines can be configured for either little or big endian
903 byte order. These modes require different kernels and a different
904 Linux distribution. In general there is one preferred byteorder for a
905 particular system but some systems are just as commonly used in the
906 one or the other endianness.
908 config CPU_BIG_ENDIAN
910 depends on SYS_SUPPORTS_BIG_ENDIAN
912 config CPU_LITTLE_ENDIAN
914 depends on SYS_SUPPORTS_LITTLE_ENDIAN
922 config SYS_SUPPORTS_APM_EMULATION
925 config SYS_SUPPORTS_BIG_ENDIAN
928 config SYS_SUPPORTS_LITTLE_ENDIAN
931 config SYS_SUPPORTS_HUGETLBFS
933 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
960 config IRQ_CPU_OCTEON
963 config MIPS_BOARDS_GEN
966 config PCI_GT64XXX_PCI0
969 config NO_EXCEPT_FILL
980 select DMA_NONCOHERENT
983 select SYS_HAS_CPU_R5500
984 select SYS_SUPPORTS_32BIT_KERNEL
985 select SYS_SUPPORTS_64BIT_KERNEL
986 select SYS_SUPPORTS_BIG_ENDIAN
993 select DMA_NONCOHERENT
994 select SYS_HAS_CPU_MIPS32_R2
995 select SYS_SUPPORTS_32BIT_KERNEL
996 select SYS_SUPPORTS_LITTLE_ENDIAN
997 select SYS_SUPPORTS_BIG_ENDIAN
999 select CPU_MIPSR2_IRQ_VI
1011 select DMA_NONCOHERENT
1013 select SYS_HAS_CPU_MIPS32_R1
1014 select SYS_HAS_EARLY_PRINTK
1015 select SYS_SUPPORTS_32BIT_KERNEL
1018 config SWAP_IO_SPACE
1021 config SERIAL_RM9000
1024 config SGI_HAS_INDYDOG
1036 config SGI_HAS_ZILOG
1039 config SGI_HAS_I8042
1042 config DEFAULT_SGI_PARTITION
1054 config MIPS_L1_CACHE_SHIFT
1056 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1057 default "6" if MIPS_CPU_SCACHE
1058 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1061 config HAVE_STD_PC_SERIAL_PORT
1065 bool "ARC console support"
1066 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1070 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1075 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1084 menu "CPU selection"
1090 config CPU_LOONGSON2E
1092 depends on SYS_HAS_CPU_LOONGSON2E
1093 select CPU_LOONGSON2
1095 The Loongson 2E processor implements the MIPS III instruction set
1096 with many extensions.
1098 It has an internal FPGA northbridge, which is compatiable to
1101 config CPU_LOONGSON2F
1103 depends on SYS_HAS_CPU_LOONGSON2F
1104 select CPU_LOONGSON2
1106 select ARCH_REQUIRE_GPIOLIB
1108 The Loongson 2F processor implements the MIPS III instruction set
1109 with many extensions.
1111 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1112 have a similar programming interface with FPGA northbridge used in
1115 config CPU_MIPS32_R1
1116 bool "MIPS32 Release 1"
1117 depends on SYS_HAS_CPU_MIPS32_R1
1118 select CPU_HAS_PREFETCH
1119 select CPU_SUPPORTS_32BIT_KERNEL
1120 select CPU_SUPPORTS_HIGHMEM
1122 Choose this option to build a kernel for release 1 or later of the
1123 MIPS32 architecture. Most modern embedded systems with a 32-bit
1124 MIPS processor are based on a MIPS32 processor. If you know the
1125 specific type of processor in your system, choose those that one
1126 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1127 Release 2 of the MIPS32 architecture is available since several
1128 years so chances are you even have a MIPS32 Release 2 processor
1129 in which case you should choose CPU_MIPS32_R2 instead for better
1132 config CPU_MIPS32_R2
1133 bool "MIPS32 Release 2"
1134 depends on SYS_HAS_CPU_MIPS32_R2
1135 select CPU_HAS_PREFETCH
1136 select CPU_SUPPORTS_32BIT_KERNEL
1137 select CPU_SUPPORTS_HIGHMEM
1139 Choose this option to build a kernel for release 2 or later of the
1140 MIPS32 architecture. Most modern embedded systems with a 32-bit
1141 MIPS processor are based on a MIPS32 processor. If you know the
1142 specific type of processor in your system, choose those that one
1143 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1145 config CPU_MIPS64_R1
1146 bool "MIPS64 Release 1"
1147 depends on SYS_HAS_CPU_MIPS64_R1
1148 select CPU_HAS_PREFETCH
1149 select CPU_SUPPORTS_32BIT_KERNEL
1150 select CPU_SUPPORTS_64BIT_KERNEL
1151 select CPU_SUPPORTS_HIGHMEM
1152 select CPU_SUPPORTS_HUGEPAGES
1154 Choose this option to build a kernel for release 1 or later of the
1155 MIPS64 architecture. Many modern embedded systems with a 64-bit
1156 MIPS processor are based on a MIPS64 processor. If you know the
1157 specific type of processor in your system, choose those that one
1158 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1159 Release 2 of the MIPS64 architecture is available since several
1160 years so chances are you even have a MIPS64 Release 2 processor
1161 in which case you should choose CPU_MIPS64_R2 instead for better
1164 config CPU_MIPS64_R2
1165 bool "MIPS64 Release 2"
1166 depends on SYS_HAS_CPU_MIPS64_R2
1167 select CPU_HAS_PREFETCH
1168 select CPU_SUPPORTS_32BIT_KERNEL
1169 select CPU_SUPPORTS_64BIT_KERNEL
1170 select CPU_SUPPORTS_HIGHMEM
1171 select CPU_SUPPORTS_HUGEPAGES
1173 Choose this option to build a kernel for release 2 or later of the
1174 MIPS64 architecture. Many modern embedded systems with a 64-bit
1175 MIPS processor are based on a MIPS64 processor. If you know the
1176 specific type of processor in your system, choose those that one
1177 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1181 depends on SYS_HAS_CPU_R3000
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_HIGHMEM
1186 Please make sure to pick the right CPU type. Linux/MIPS is not
1187 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1188 *not* work on R4000 machines and vice versa. However, since most
1189 of the supported machines have an R4000 (or similar) CPU, R4x00
1190 might be a safe bet. If the resulting kernel does not work,
1191 try to recompile with R3000.
1195 depends on SYS_HAS_CPU_TX39XX
1196 select CPU_SUPPORTS_32BIT_KERNEL
1200 depends on SYS_HAS_CPU_VR41XX
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1204 The options selects support for the NEC VR4100 series of processors.
1205 Only choose this option if you have one of these processors as a
1206 kernel built with this option will not run on any other type of
1207 processor or vice versa.
1211 depends on SYS_HAS_CPU_R4300
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1215 MIPS Technologies R4300-series processors.
1219 depends on SYS_HAS_CPU_R4X00
1220 select CPU_SUPPORTS_32BIT_KERNEL
1221 select CPU_SUPPORTS_64BIT_KERNEL
1223 MIPS Technologies R4000-series processors other than 4300, including
1224 the R4000, R4400, R4600, and 4700.
1228 depends on SYS_HAS_CPU_TX49XX
1229 select CPU_HAS_PREFETCH
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1235 depends on SYS_HAS_CPU_R5000
1236 select CPU_SUPPORTS_32BIT_KERNEL
1237 select CPU_SUPPORTS_64BIT_KERNEL
1239 MIPS Technologies R5000-series processors other than the Nevada.
1243 depends on SYS_HAS_CPU_R5432
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1249 depends on SYS_HAS_CPU_R5500
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_64BIT_KERNEL
1252 select CPU_SUPPORTS_HUGEPAGES
1254 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1259 depends on EXPERIMENTAL
1260 depends on SYS_HAS_CPU_R6000
1261 select CPU_SUPPORTS_32BIT_KERNEL
1263 MIPS Technologies R6000 and R6000A series processors. Note these
1264 processors are extremely rare and the support for them is incomplete.
1268 depends on SYS_HAS_CPU_NEVADA
1269 select CPU_SUPPORTS_32BIT_KERNEL
1270 select CPU_SUPPORTS_64BIT_KERNEL
1272 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1276 depends on EXPERIMENTAL
1277 depends on SYS_HAS_CPU_R8000
1278 select CPU_HAS_PREFETCH
1279 select CPU_SUPPORTS_64BIT_KERNEL
1281 MIPS Technologies R8000 processors. Note these processors are
1282 uncommon and the support for them is incomplete.
1286 depends on SYS_HAS_CPU_R10000
1287 select CPU_HAS_PREFETCH
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_64BIT_KERNEL
1290 select CPU_SUPPORTS_HIGHMEM
1292 MIPS Technologies R10000-series processors.
1296 depends on SYS_HAS_CPU_RM7000
1297 select CPU_HAS_PREFETCH
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1300 select CPU_SUPPORTS_HIGHMEM
1304 depends on SYS_HAS_CPU_RM9000
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1308 select CPU_SUPPORTS_HIGHMEM
1309 select WEAK_ORDERING
1313 depends on SYS_HAS_CPU_SB1
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1316 select CPU_SUPPORTS_HIGHMEM
1317 select WEAK_ORDERING
1319 config CPU_CAVIUM_OCTEON
1320 bool "Cavium Octeon processor"
1321 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1323 select IRQ_CPU_OCTEON
1324 select CPU_HAS_PREFETCH
1325 select CPU_SUPPORTS_64BIT_KERNEL
1326 select SYS_SUPPORTS_SMP
1327 select NR_CPUS_DEFAULT_16
1328 select WEAK_ORDERING
1329 select CPU_SUPPORTS_HIGHMEM
1330 select CPU_SUPPORTS_HUGEPAGES
1332 The Cavium Octeon processor is a highly integrated chip containing
1333 many ethernet hardware widgets for networking tasks. The processor
1334 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1335 Full details can be found at http://www.caviumnetworks.com.
1340 config CPU_NOP_WORKAROUNDS
1343 config CPU_JUMP_WORKAROUNDS
1346 config CPU_LOONGSON2F_WORKAROUNDS
1347 bool "Loongson 2F Workarounds"
1349 select CPU_NOP_WORKAROUNDS
1350 select CPU_JUMP_WORKAROUNDS
1352 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1353 require workarounds. Without workarounds the system may hang
1354 unexpectedly. For more information please refer to the gas
1355 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1357 Loongson 2F03 and later have fixed these issues and no workarounds
1358 are needed. The workarounds have no significant side effect on them
1359 but may decrease the performance of the system so this option should
1360 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1363 If unsure, please say Y.
1364 endif # CPU_LOONGSON2F
1366 config SYS_SUPPORTS_ZBOOT
1368 select HAVE_KERNEL_GZIP
1369 select HAVE_KERNEL_BZIP2
1370 select HAVE_KERNEL_LZMA
1371 select HAVE_KERNEL_LZO
1373 config SYS_SUPPORTS_ZBOOT_UART16550
1375 select SYS_SUPPORTS_ZBOOT
1377 config CPU_LOONGSON2
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select CPU_SUPPORTS_64BIT_KERNEL
1381 select CPU_SUPPORTS_HIGHMEM
1383 config SYS_HAS_CPU_LOONGSON2E
1386 config SYS_HAS_CPU_LOONGSON2F
1388 select CPU_SUPPORTS_CPUFREQ
1389 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1390 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1392 config SYS_HAS_CPU_MIPS32_R1
1395 config SYS_HAS_CPU_MIPS32_R2
1398 config SYS_HAS_CPU_MIPS64_R1
1401 config SYS_HAS_CPU_MIPS64_R2
1404 config SYS_HAS_CPU_R3000
1407 config SYS_HAS_CPU_TX39XX
1410 config SYS_HAS_CPU_VR41XX
1413 config SYS_HAS_CPU_R4300
1416 config SYS_HAS_CPU_R4X00
1419 config SYS_HAS_CPU_TX49XX
1422 config SYS_HAS_CPU_R5000
1425 config SYS_HAS_CPU_R5432
1428 config SYS_HAS_CPU_R5500
1431 config SYS_HAS_CPU_R6000
1434 config SYS_HAS_CPU_NEVADA
1437 config SYS_HAS_CPU_R8000
1440 config SYS_HAS_CPU_R10000
1443 config SYS_HAS_CPU_RM7000
1446 config SYS_HAS_CPU_RM9000
1449 config SYS_HAS_CPU_SB1
1452 config SYS_HAS_CPU_CAVIUM_OCTEON
1456 # CPU may reorder R->R, R->W, W->R, W->W
1457 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1459 config WEAK_ORDERING
1463 # CPU may reorder reads and writes beyond LL/SC
1464 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1466 config WEAK_REORDERING_BEYOND_LLSC
1471 # These two indicate any level of the MIPS32 and MIPS64 architecture
1475 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1479 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1482 # These two indicate the revision of the architecture, either Release 1 or Release 2
1486 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1490 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1492 config SYS_SUPPORTS_32BIT_KERNEL
1494 config SYS_SUPPORTS_64BIT_KERNEL
1496 config CPU_SUPPORTS_32BIT_KERNEL
1498 config CPU_SUPPORTS_64BIT_KERNEL
1500 config CPU_SUPPORTS_CPUFREQ
1502 config CPU_SUPPORTS_ADDRWINCFG
1504 config CPU_SUPPORTS_HUGEPAGES
1506 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1508 config MIPS_PGD_C0_CONTEXT
1510 default y if 64BIT && CPU_MIPSR2
1513 # Set to y for ptrace access to watch registers.
1515 config HARDWARE_WATCHPOINTS
1517 default y if CPU_MIPSR1 || CPU_MIPSR2
1523 prompt "Kernel code model"
1525 You should only select this option if you have a workload that
1526 actually benefits from 64-bit processing or if your machine has
1527 large memory. You will only be presented a single option in this
1528 menu if your system does not support both 32-bit and 64-bit kernels.
1531 bool "32-bit kernel"
1532 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1535 Select this option if you want to build a 32-bit kernel.
1537 bool "64-bit kernel"
1538 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1539 select HAVE_SYSCALL_WRAPPERS
1541 Select this option if you want to build a 64-bit kernel.
1546 prompt "Kernel page size"
1547 default PAGE_SIZE_4KB
1549 config PAGE_SIZE_4KB
1551 depends on !CPU_LOONGSON2
1553 This option select the standard 4kB Linux page size. On some
1554 R3000-family processors this is the only available page size. Using
1555 4kB page size will minimize memory consumption and is therefore
1556 recommended for low memory systems.
1558 config PAGE_SIZE_8KB
1560 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1562 Using 8kB page size will result in higher performance kernel at
1563 the price of higher memory consumption. This option is available
1564 only on R8000 and cnMIPS processors. Note that you will need a
1565 suitable Linux distribution to support this.
1567 config PAGE_SIZE_16KB
1569 depends on !CPU_R3000 && !CPU_TX39XX
1571 Using 16kB page size will result in higher performance kernel at
1572 the price of higher memory consumption. This option is available on
1573 all non-R3000 family processors. Note that you will need a suitable
1574 Linux distribution to support this.
1576 config PAGE_SIZE_32KB
1578 depends on CPU_CAVIUM_OCTEON
1580 Using 32kB page size will result in higher performance kernel at
1581 the price of higher memory consumption. This option is available
1582 only on cnMIPS cores. Note that you will need a suitable Linux
1583 distribution to support this.
1585 config PAGE_SIZE_64KB
1587 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1589 Using 64kB page size will result in higher performance kernel at
1590 the price of higher memory consumption. This option is available on
1591 all non-R3000 family processor. Not that at the time of this
1592 writing this option is still high experimental.
1599 config IP22_CPU_SCACHE
1604 # Support for a MIPS32 / MIPS64 style S-caches
1606 config MIPS_CPU_SCACHE
1610 config R5000_CPU_SCACHE
1614 config RM7000_CPU_SCACHE
1618 config SIBYTE_DMA_PAGEOPS
1619 bool "Use DMA to clear/copy pages"
1622 Instead of using the CPU to zero and copy pages, use a Data Mover
1623 channel. These DMA channels are otherwise unused by the standard
1624 SiByte Linux port. Seems to give a small performance benefit.
1626 config CPU_HAS_PREFETCH
1630 prompt "MIPS MT options"
1632 config MIPS_MT_DISABLED
1633 bool "Disable multithreading support."
1635 Use this option if your workload can't take advantage of
1636 MIPS hardware multithreading support. On systems that don't have
1637 the option of an MT-enabled processor this option will be the only
1638 option in this menu.
1641 bool "Use 1 TC on each available VPE for SMP"
1642 depends on SYS_SUPPORTS_MULTITHREADING
1643 select CPU_MIPSR2_IRQ_VI
1644 select CPU_MIPSR2_IRQ_EI
1646 select NR_CPUS_DEFAULT_2
1648 select SYS_SUPPORTS_SCHED_SMT if SMP
1649 select SYS_SUPPORTS_SMP
1652 This is a kernel model which is known a VSMP but lately has been
1653 marketesed into SMVP.
1654 Virtual SMP uses the processor's VPEs to implement virtual
1655 processors. In currently available configuration of the 34K processor
1656 this allows for a dual processor. Both processors will share the same
1657 primary caches; each will obtain the half of the TLB for it's own
1658 exclusive use. For a layman this model can be described as similar to
1659 what Intel calls Hyperthreading.
1661 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1664 bool "SMTC: Use all TCs on all VPEs for SMP"
1665 depends on CPU_MIPS32_R2
1666 #depends on CPU_MIPS64_R2 # once there is hardware ...
1667 depends on SYS_SUPPORTS_MULTITHREADING
1668 select CPU_MIPSR2_IRQ_VI
1669 select CPU_MIPSR2_IRQ_EI
1671 select NR_CPUS_DEFAULT_8
1673 select SYS_SUPPORTS_SMP
1676 This is a kernel model which is known a SMTC or lately has been
1677 marketesed into SMVP.
1678 is presenting the available TC's of the core as processors to Linux.
1679 On currently available 34K processors this means a Linux system will
1680 see up to 5 processors. The implementation of the SMTC kernel differs
1681 significantly from VSMP and cannot efficiently coexist in the same
1682 kernel binary so the choice between VSMP and SMTC is a compile time
1685 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1693 bool "SMT (multithreading) scheduler support"
1694 depends on SYS_SUPPORTS_SCHED_SMT
1697 SMT scheduler support improves the CPU scheduler's decision making
1698 when dealing with MIPS MT enabled cores at a cost of slightly
1699 increased overhead in some places. If unsure say N here.
1701 config SYS_SUPPORTS_SCHED_SMT
1705 config SYS_SUPPORTS_MULTITHREADING
1708 config MIPS_MT_FPAFF
1709 bool "Dynamic FPU affinity for FP-intensive threads"
1711 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1713 config MIPS_VPE_LOADER
1714 bool "VPE loader support."
1715 depends on SYS_SUPPORTS_MULTITHREADING
1716 select CPU_MIPSR2_IRQ_VI
1717 select CPU_MIPSR2_IRQ_EI
1720 Includes a loader for loading an elf relocatable object
1721 onto another VPE and running it.
1723 config MIPS_MT_SMTC_IM_BACKSTOP
1724 bool "Use per-TC register bits as backstop for inhibited IM bits"
1725 depends on MIPS_MT_SMTC
1728 To support multiple TC microthreads acting as "CPUs" within
1729 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1730 during interrupt handling. To support legacy drivers and interrupt
1731 controller management code, SMTC has a "backstop" to track and
1732 if necessary restore the interrupt mask. This has some performance
1733 impact on interrupt service overhead.
1735 config MIPS_MT_SMTC_IRQAFF
1736 bool "Support IRQ affinity API"
1737 depends on MIPS_MT_SMTC
1740 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1741 for SMTC Linux kernel. Requires platform support, of which
1742 an example can be found in the MIPS kernel i8259 and Malta
1743 platform code. Adds some overhead to interrupt dispatch, and
1744 should be used only if you know what you are doing.
1746 config MIPS_VPE_LOADER_TOM
1747 bool "Load VPE program into memory hidden from linux"
1748 depends on MIPS_VPE_LOADER
1751 The loader can use memory that is present but has been hidden from
1752 Linux using the kernel command line option "mem=xxMB". It's up to
1753 you to ensure the amount you put in the option and the space your
1754 program requires is less or equal to the amount physically present.
1756 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1757 config MIPS_VPE_APSP_API
1758 bool "Enable support for AP/SP API (RTLX)"
1759 depends on MIPS_VPE_LOADER
1762 config MIPS_APSP_KSPD
1764 depends on MIPS_VPE_APSP_API
1767 KSPD is a kernel daemon that accepts syscall requests from the SP
1768 side, actions them and returns the results. It also handles the
1769 "exit" syscall notifying other kernel modules the SP program is
1770 exiting. You probably want to say yes here.
1773 bool "MIPS CMP framework support"
1774 depends on SYS_SUPPORTS_MIPS_CMP
1776 select SYS_SUPPORTS_SMP
1777 select SYS_SUPPORTS_SCHED_SMT if SMP
1778 select WEAK_ORDERING
1781 This is a placeholder option for the GCMP work. It will need to
1782 be handled differently...
1784 config SB1_PASS_1_WORKAROUNDS
1786 depends on CPU_SB1_PASS_1
1789 config SB1_PASS_2_WORKAROUNDS
1791 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1794 config SB1_PASS_2_1_WORKAROUNDS
1796 depends on CPU_SB1 && CPU_SB1_PASS_2
1799 config 64BIT_PHYS_ADDR
1802 config ARCH_PHYS_ADDR_T_64BIT
1803 def_bool 64BIT_PHYS_ADDR
1805 config CPU_HAS_SMARTMIPS
1806 depends on SYS_SUPPORTS_SMARTMIPS
1807 bool "Support for the SmartMIPS ASE"
1809 SmartMIPS is a extension of the MIPS32 architecture aimed at
1810 increased security at both hardware and software level for
1811 smartcards. Enabling this option will allow proper use of the
1812 SmartMIPS instructions by Linux applications. However a kernel with
1813 this option will not work on a MIPS core without SmartMIPS core. If
1814 you don't know you probably don't have SmartMIPS and should say N
1821 # Vectored interrupt mode is an R2 feature
1823 config CPU_MIPSR2_IRQ_VI
1827 # Extended interrupt mode is an R2 feature
1829 config CPU_MIPSR2_IRQ_EI
1834 depends on !CPU_R3000
1837 config GENERIC_CLOCKEVENTS_BROADCAST
1843 config CPU_DADDI_WORKAROUNDS
1846 config CPU_R4000_WORKAROUNDS
1848 select CPU_R4400_WORKAROUNDS
1850 config CPU_R4400_WORKAROUNDS
1854 # Use the generic interrupt handling code in kernel/irq/:
1856 config GENERIC_HARDIRQS
1860 config GENERIC_IRQ_PROBE
1868 # - Highmem only makes sense for the 32-bit kernel.
1869 # - The current highmem code will only work properly on physically indexed
1870 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1871 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1872 # moment we protect the user and offer the highmem option only on machines
1873 # where it's known to be safe. This will not offer highmem on a few systems
1874 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1875 # indexed CPUs but we're playing safe.
1876 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1877 # know they might have memory configurations that could make use of highmem
1881 bool "High Memory Support"
1882 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1884 config CPU_SUPPORTS_HIGHMEM
1887 config SYS_SUPPORTS_HIGHMEM
1890 config SYS_SUPPORTS_SMARTMIPS
1893 config ARCH_FLATMEM_ENABLE
1895 depends on !NUMA && !CPU_LOONGSON2
1897 config ARCH_DISCONTIGMEM_ENABLE
1899 default y if SGI_IP27
1901 Say Y to support efficient handling of discontiguous physical memory,
1902 for architectures which are either NUMA (Non-Uniform Memory Access)
1903 or have huge holes in the physical address space for other reasons.
1904 See <file:Documentation/vm/numa> for more.
1906 config ARCH_POPULATES_NODE_MAP
1909 config ARCH_SPARSEMEM_ENABLE
1911 select SPARSEMEM_STATIC
1915 depends on SYS_SUPPORTS_NUMA
1917 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1918 Access). This option improves performance on systems with more
1919 than two nodes; on two node systems it is generally better to
1920 leave it disabled; on single node systems disable this option
1923 config SYS_SUPPORTS_NUMA
1929 depends on NEED_MULTIPLE_NODES
1934 bool "Multi-Processing support"
1935 depends on SYS_SUPPORTS_SMP
1937 select USE_GENERIC_SMP_HELPERS
1939 This enables support for systems with more than one CPU. If you have
1940 a system with only one CPU, like most personal computers, say N. If
1941 you have a system with more than one CPU, say Y.
1943 If you say N here, the kernel will run on single and multiprocessor
1944 machines, but will use only one CPU of a multiprocessor machine. If
1945 you say Y here, the kernel will run on many, but not all,
1946 singleprocessor machines. On a singleprocessor machine, the kernel
1947 will run faster if you say N here.
1949 People using multiprocessor machines who say Y here should also say
1950 Y to "Enhanced Real Time Clock Support", below.
1952 See also the SMP-HOWTO available at
1953 <http://www.tldp.org/docs.html#howto>.
1955 If you don't know what to do here, say N.
1960 config SYS_SUPPORTS_MIPS_CMP
1963 config SYS_SUPPORTS_SMP
1966 config NR_CPUS_DEFAULT_1
1969 config NR_CPUS_DEFAULT_2
1972 config NR_CPUS_DEFAULT_4
1975 config NR_CPUS_DEFAULT_8
1978 config NR_CPUS_DEFAULT_16
1981 config NR_CPUS_DEFAULT_32
1984 config NR_CPUS_DEFAULT_64
1988 int "Maximum number of CPUs (2-64)"
1989 range 1 64 if NR_CPUS_DEFAULT_1
1991 default "1" if NR_CPUS_DEFAULT_1
1992 default "2" if NR_CPUS_DEFAULT_2
1993 default "4" if NR_CPUS_DEFAULT_4
1994 default "8" if NR_CPUS_DEFAULT_8
1995 default "16" if NR_CPUS_DEFAULT_16
1996 default "32" if NR_CPUS_DEFAULT_32
1997 default "64" if NR_CPUS_DEFAULT_64
1999 This allows you to specify the maximum number of CPUs which this
2000 kernel will support. The maximum supported value is 32 for 32-bit
2001 kernel and 64 for 64-bit kernels; the minimum value which makes
2002 sense is 1 for Qemu (useful only for kernel debugging purposes)
2003 and 2 for all others.
2005 This is purely to save memory - each supported CPU adds
2006 approximately eight kilobytes to the kernel image. For best
2007 performance should round up your number of processors to the next
2010 source "kernel/time/Kconfig"
2013 # Timer Interrupt Frequency Configuration
2017 prompt "Timer frequency"
2020 Allows the configuration of the timer frequency.
2023 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2026 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2029 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2032 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2035 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2038 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2041 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2045 config SYS_SUPPORTS_48HZ
2048 config SYS_SUPPORTS_100HZ
2051 config SYS_SUPPORTS_128HZ
2054 config SYS_SUPPORTS_250HZ
2057 config SYS_SUPPORTS_256HZ
2060 config SYS_SUPPORTS_1000HZ
2063 config SYS_SUPPORTS_1024HZ
2066 config SYS_SUPPORTS_ARBIT_HZ
2068 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2069 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2070 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2071 !SYS_SUPPORTS_1024HZ
2076 default 100 if HZ_100
2077 default 128 if HZ_128
2078 default 250 if HZ_250
2079 default 256 if HZ_256
2080 default 1000 if HZ_1000
2081 default 1024 if HZ_1024
2083 source "kernel/Kconfig.preempt"
2085 config MIPS_INSANE_LARGE
2086 bool "Support for large 64-bit configurations"
2087 depends on CPU_R10000 && 64BIT
2089 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2090 previous 64-bit processors which only supported 40 bit / 1TB. If you
2091 need processes of more than 1TB virtual address space, say Y here.
2092 This will result in additional memory usage, so it is not
2093 recommended for normal users.
2096 bool "Kexec system call (EXPERIMENTAL)"
2097 depends on EXPERIMENTAL
2099 kexec is a system call that implements the ability to shutdown your
2100 current kernel, and to start another kernel. It is like a reboot
2101 but it is independent of the system firmware. And like a reboot
2102 you can start any kernel with it, not just Linux.
2104 The name comes from the similarity to the exec system call.
2106 It is an ongoing process to be certain the hardware in a machine
2107 is properly shutdown, so do not be surprised if this code does not
2108 initially work for you. It may help to enable device hotplugging
2109 support. As of this writing the exact hardware interface is
2110 strongly in flux, so no good recommendation can be made.
2113 bool "Enable seccomp to safely compute untrusted bytecode"
2117 This kernel feature is useful for number crunching applications
2118 that may need to compute untrusted bytecode during their
2119 execution. By using pipes or other transports made available to
2120 the process as file descriptors supporting the read/write
2121 syscalls, it's possible to isolate those applications in
2122 their own address space using seccomp. Once seccomp is
2123 enabled via /proc/<pid>/seccomp, it cannot be disabled
2124 and the task is only allowed to execute a few safe syscalls
2125 defined by each seccomp mode.
2127 If unsure, say Y. Only embedded should say N here.
2130 bool "Flattened Device Tree support"
2134 Include support for flattened device tree machine descriptions.
2138 config LOCKDEP_SUPPORT
2142 config STACKTRACE_SUPPORT
2146 source "init/Kconfig"
2148 source "kernel/Kconfig.freezer"
2150 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2158 bool "Support for PCI controller"
2159 depends on HW_HAS_PCI
2162 Find out whether you have a PCI motherboard. PCI is the name of a
2163 bus system, i.e. the way the CPU talks to the other stuff inside
2164 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2170 source "drivers/pci/Kconfig"
2173 # ISA support is now enabled via select. Too many systems still have the one
2174 # or other ISA chip on the board that users don't know about so don't expect
2175 # users to choose the right thing ...
2182 depends on HW_HAS_EISA
2184 select GENERIC_ISA_DMA
2186 The Extended Industry Standard Architecture (EISA) bus was
2187 developed as an open alternative to the IBM MicroChannel bus.
2189 The EISA bus provided some of the features of the IBM MicroChannel
2190 bus while maintaining backward compatibility with cards made for
2191 the older ISA bus. The EISA bus saw limited use between 1988 and
2192 1995 when it was made obsolete by the PCI bus.
2194 Say Y here if you are building a kernel for an EISA-based machine.
2198 source "drivers/eisa/Kconfig"
2201 bool "TURBOchannel support"
2202 depends on MACH_DECSTATION
2204 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2205 processors. TURBOchannel programming specifications are available
2207 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2209 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2210 Linux driver support status is documented at:
2211 <http://www.linux-mips.org/wiki/DECstation>
2214 # bool "Access.Bus support"
2223 select MIPS_EXTERNAL_TIMER
2228 source "drivers/pcmcia/Kconfig"
2230 source "drivers/pci/hotplug/Kconfig"
2234 menu "Executable file formats"
2236 source "fs/Kconfig.binfmt"
2241 config MIPS32_COMPAT
2242 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2245 Select this option if you want Linux/MIPS 32-bit binary
2246 compatibility. Since all software available for Linux/MIPS is
2247 currently 32-bit you should say Y here.
2251 depends on MIPS32_COMPAT
2254 config SYSVIPC_COMPAT
2256 depends on COMPAT && SYSVIPC
2260 bool "Kernel support for o32 binaries"
2261 depends on MIPS32_COMPAT
2263 Select this option if you want to run o32 binaries. These are pure
2264 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2265 existing binaries are in this format.
2270 bool "Kernel support for n32 binaries"
2271 depends on MIPS32_COMPAT
2273 Select this option if you want to run n32 binaries. These are
2274 64-bit binaries using 32-bit quantities for addressing and certain
2275 data that would normally be 64-bit. They are used in special
2282 default y if MIPS32_O32 || MIPS32_N32
2286 menu "Power management options"
2288 config ARCH_HIBERNATION_POSSIBLE
2290 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2292 config ARCH_SUSPEND_POSSIBLE
2294 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2296 source "kernel/power/Kconfig"
2300 source "arch/mips/kernel/cpufreq/Kconfig"
2302 source "net/Kconfig"
2304 source "drivers/Kconfig"
2308 source "arch/mips/Kconfig.debug"
2310 source "security/Kconfig"
2312 source "crypto/Kconfig"
2314 source "lib/Kconfig"