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
696 This option supports all of the Octeon reference boards from Cavium
697 Networks. It builds a kernel that dynamically determines the Octeon
698 CPU type and supports all known board reference implementations.
699 Some of the supported boards are:
706 Say Y here for most Octeon reference boards.
710 source "arch/mips/alchemy/Kconfig"
711 source "arch/mips/bcm63xx/Kconfig"
712 source "arch/mips/jazz/Kconfig"
713 source "arch/mips/jz4740/Kconfig"
714 source "arch/mips/lasat/Kconfig"
715 source "arch/mips/pmc-sierra/Kconfig"
716 source "arch/mips/powertv/Kconfig"
717 source "arch/mips/sgi-ip27/Kconfig"
718 source "arch/mips/sibyte/Kconfig"
719 source "arch/mips/txx9/Kconfig"
720 source "arch/mips/vr41xx/Kconfig"
721 source "arch/mips/cavium-octeon/Kconfig"
722 source "arch/mips/loongson/Kconfig"
726 config RWSEM_GENERIC_SPINLOCK
730 config RWSEM_XCHGADD_ALGORITHM
733 config ARCH_HAS_ILOG2_U32
737 config ARCH_HAS_ILOG2_U64
741 config ARCH_SUPPORTS_OPROFILE
743 default y if !MIPS_MT_SMTC
745 config GENERIC_FIND_NEXT_BIT
749 config GENERIC_HWEIGHT
753 config GENERIC_CALIBRATE_DELAY
757 config GENERIC_CLOCKEVENTS
761 config GENERIC_CMOS_UPDATE
765 config SCHED_OMIT_FRAME_POINTER
769 config GENERIC_HARDIRQS_NO__DO_IRQ
773 # Select some configuration options automatically based on user selections.
778 config ARCH_MAY_HAVE_PC_FDC
827 select ARCH_REQUIRE_GPIOLIB
836 config DMA_NONCOHERENT
838 select NEED_DMA_MAP_STATE
840 config NEED_DMA_MAP_STATE
843 config SYS_HAS_EARLY_PRINTK
847 bool "Support for hot-pluggable CPUs"
848 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
850 Say Y here to allow turning CPUs off and on. CPUs can be
851 controlled through /sys/devices/system/cpu.
852 (Note: power management support will enable this option
853 automatically on SMP systems. )
854 Say N if you want to disable CPU hotplug.
856 config SYS_SUPPORTS_HOTPLUG_CPU
871 config MIPS_DISABLE_OBSOLETE_IDE
880 config GENERIC_ISA_DMA
882 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
885 config GENERIC_ISA_DMA_SUPPORT_BROKEN
887 select GENERIC_ISA_DMA
896 # Endianess selection. Sufficiently obscure so many users don't know what to
897 # answer,so we try hard to limit the available choices. Also the use of a
898 # choice statement should be more obvious to the user.
901 prompt "Endianess selection"
903 Some MIPS machines can be configured for either little or big endian
904 byte order. These modes require different kernels and a different
905 Linux distribution. In general there is one preferred byteorder for a
906 particular system but some systems are just as commonly used in the
907 one or the other endianness.
909 config CPU_BIG_ENDIAN
911 depends on SYS_SUPPORTS_BIG_ENDIAN
913 config CPU_LITTLE_ENDIAN
915 depends on SYS_SUPPORTS_LITTLE_ENDIAN
923 config SYS_SUPPORTS_APM_EMULATION
926 config SYS_SUPPORTS_BIG_ENDIAN
929 config SYS_SUPPORTS_LITTLE_ENDIAN
932 config SYS_SUPPORTS_HUGETLBFS
934 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
961 config IRQ_CPU_OCTEON
964 config MIPS_BOARDS_GEN
967 config PCI_GT64XXX_PCI0
970 config NO_EXCEPT_FILL
981 select DMA_NONCOHERENT
984 select SYS_HAS_CPU_R5500
985 select SYS_SUPPORTS_32BIT_KERNEL
986 select SYS_SUPPORTS_64BIT_KERNEL
987 select SYS_SUPPORTS_BIG_ENDIAN
994 select DMA_NONCOHERENT
995 select SYS_HAS_CPU_MIPS32_R2
996 select SYS_SUPPORTS_32BIT_KERNEL
997 select SYS_SUPPORTS_LITTLE_ENDIAN
998 select SYS_SUPPORTS_BIG_ENDIAN
1000 select CPU_MIPSR2_IRQ_VI
1012 select DMA_NONCOHERENT
1014 select SYS_HAS_CPU_MIPS32_R1
1015 select SYS_HAS_EARLY_PRINTK
1016 select SYS_SUPPORTS_32BIT_KERNEL
1019 config SWAP_IO_SPACE
1022 config SERIAL_RM9000
1025 config SGI_HAS_INDYDOG
1037 config SGI_HAS_ZILOG
1040 config SGI_HAS_I8042
1043 config DEFAULT_SGI_PARTITION
1055 config MIPS_L1_CACHE_SHIFT
1057 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1058 default "6" if MIPS_CPU_SCACHE
1059 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1062 config HAVE_STD_PC_SERIAL_PORT
1066 bool "ARC console support"
1067 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1071 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1076 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1085 menu "CPU selection"
1091 config CPU_LOONGSON2E
1093 depends on SYS_HAS_CPU_LOONGSON2E
1094 select CPU_LOONGSON2
1096 The Loongson 2E processor implements the MIPS III instruction set
1097 with many extensions.
1099 It has an internal FPGA northbridge, which is compatiable to
1102 config CPU_LOONGSON2F
1104 depends on SYS_HAS_CPU_LOONGSON2F
1105 select CPU_LOONGSON2
1107 select ARCH_REQUIRE_GPIOLIB
1109 The Loongson 2F processor implements the MIPS III instruction set
1110 with many extensions.
1112 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1113 have a similar programming interface with FPGA northbridge used in
1116 config CPU_MIPS32_R1
1117 bool "MIPS32 Release 1"
1118 depends on SYS_HAS_CPU_MIPS32_R1
1119 select CPU_HAS_PREFETCH
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_HIGHMEM
1123 Choose this option to build a kernel for release 1 or later of the
1124 MIPS32 architecture. Most modern embedded systems with a 32-bit
1125 MIPS processor are based on a MIPS32 processor. If you know the
1126 specific type of processor in your system, choose those that one
1127 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1128 Release 2 of the MIPS32 architecture is available since several
1129 years so chances are you even have a MIPS32 Release 2 processor
1130 in which case you should choose CPU_MIPS32_R2 instead for better
1133 config CPU_MIPS32_R2
1134 bool "MIPS32 Release 2"
1135 depends on SYS_HAS_CPU_MIPS32_R2
1136 select CPU_HAS_PREFETCH
1137 select CPU_SUPPORTS_32BIT_KERNEL
1138 select CPU_SUPPORTS_HIGHMEM
1140 Choose this option to build a kernel for release 2 or later of the
1141 MIPS32 architecture. Most modern embedded systems with a 32-bit
1142 MIPS processor are based on a MIPS32 processor. If you know the
1143 specific type of processor in your system, choose those that one
1144 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1146 config CPU_MIPS64_R1
1147 bool "MIPS64 Release 1"
1148 depends on SYS_HAS_CPU_MIPS64_R1
1149 select CPU_HAS_PREFETCH
1150 select CPU_SUPPORTS_32BIT_KERNEL
1151 select CPU_SUPPORTS_64BIT_KERNEL
1152 select CPU_SUPPORTS_HIGHMEM
1153 select CPU_SUPPORTS_HUGEPAGES
1155 Choose this option to build a kernel for release 1 or later of the
1156 MIPS64 architecture. Many modern embedded systems with a 64-bit
1157 MIPS processor are based on a MIPS64 processor. If you know the
1158 specific type of processor in your system, choose those that one
1159 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1160 Release 2 of the MIPS64 architecture is available since several
1161 years so chances are you even have a MIPS64 Release 2 processor
1162 in which case you should choose CPU_MIPS64_R2 instead for better
1165 config CPU_MIPS64_R2
1166 bool "MIPS64 Release 2"
1167 depends on SYS_HAS_CPU_MIPS64_R2
1168 select CPU_HAS_PREFETCH
1169 select CPU_SUPPORTS_32BIT_KERNEL
1170 select CPU_SUPPORTS_64BIT_KERNEL
1171 select CPU_SUPPORTS_HIGHMEM
1172 select CPU_SUPPORTS_HUGEPAGES
1174 Choose this option to build a kernel for release 2 or later of the
1175 MIPS64 architecture. Many modern embedded systems with a 64-bit
1176 MIPS processor are based on a MIPS64 processor. If you know the
1177 specific type of processor in your system, choose those that one
1178 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1182 depends on SYS_HAS_CPU_R3000
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1187 Please make sure to pick the right CPU type. Linux/MIPS is not
1188 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1189 *not* work on R4000 machines and vice versa. However, since most
1190 of the supported machines have an R4000 (or similar) CPU, R4x00
1191 might be a safe bet. If the resulting kernel does not work,
1192 try to recompile with R3000.
1196 depends on SYS_HAS_CPU_TX39XX
1197 select CPU_SUPPORTS_32BIT_KERNEL
1201 depends on SYS_HAS_CPU_VR41XX
1202 select CPU_SUPPORTS_32BIT_KERNEL
1203 select CPU_SUPPORTS_64BIT_KERNEL
1205 The options selects support for the NEC VR4100 series of processors.
1206 Only choose this option if you have one of these processors as a
1207 kernel built with this option will not run on any other type of
1208 processor or vice versa.
1212 depends on SYS_HAS_CPU_R4300
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_64BIT_KERNEL
1216 MIPS Technologies R4300-series processors.
1220 depends on SYS_HAS_CPU_R4X00
1221 select CPU_SUPPORTS_32BIT_KERNEL
1222 select CPU_SUPPORTS_64BIT_KERNEL
1224 MIPS Technologies R4000-series processors other than 4300, including
1225 the R4000, R4400, R4600, and 4700.
1229 depends on SYS_HAS_CPU_TX49XX
1230 select CPU_HAS_PREFETCH
1231 select CPU_SUPPORTS_32BIT_KERNEL
1232 select CPU_SUPPORTS_64BIT_KERNEL
1236 depends on SYS_HAS_CPU_R5000
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1240 MIPS Technologies R5000-series processors other than the Nevada.
1244 depends on SYS_HAS_CPU_R5432
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_64BIT_KERNEL
1250 depends on SYS_HAS_CPU_R5500
1251 select CPU_SUPPORTS_32BIT_KERNEL
1252 select CPU_SUPPORTS_64BIT_KERNEL
1253 select CPU_SUPPORTS_HUGEPAGES
1255 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1260 depends on EXPERIMENTAL
1261 depends on SYS_HAS_CPU_R6000
1262 select CPU_SUPPORTS_32BIT_KERNEL
1264 MIPS Technologies R6000 and R6000A series processors. Note these
1265 processors are extremely rare and the support for them is incomplete.
1269 depends on SYS_HAS_CPU_NEVADA
1270 select CPU_SUPPORTS_32BIT_KERNEL
1271 select CPU_SUPPORTS_64BIT_KERNEL
1273 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1277 depends on EXPERIMENTAL
1278 depends on SYS_HAS_CPU_R8000
1279 select CPU_HAS_PREFETCH
1280 select CPU_SUPPORTS_64BIT_KERNEL
1282 MIPS Technologies R8000 processors. Note these processors are
1283 uncommon and the support for them is incomplete.
1287 depends on SYS_HAS_CPU_R10000
1288 select CPU_HAS_PREFETCH
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_64BIT_KERNEL
1291 select CPU_SUPPORTS_HIGHMEM
1293 MIPS Technologies R10000-series processors.
1297 depends on SYS_HAS_CPU_RM7000
1298 select CPU_HAS_PREFETCH
1299 select CPU_SUPPORTS_32BIT_KERNEL
1300 select CPU_SUPPORTS_64BIT_KERNEL
1301 select CPU_SUPPORTS_HIGHMEM
1305 depends on SYS_HAS_CPU_RM9000
1306 select CPU_HAS_PREFETCH
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_64BIT_KERNEL
1309 select CPU_SUPPORTS_HIGHMEM
1310 select WEAK_ORDERING
1314 depends on SYS_HAS_CPU_SB1
1315 select CPU_SUPPORTS_32BIT_KERNEL
1316 select CPU_SUPPORTS_64BIT_KERNEL
1317 select CPU_SUPPORTS_HIGHMEM
1318 select WEAK_ORDERING
1320 config CPU_CAVIUM_OCTEON
1321 bool "Cavium Octeon processor"
1322 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1324 select IRQ_CPU_OCTEON
1325 select CPU_HAS_PREFETCH
1326 select CPU_SUPPORTS_64BIT_KERNEL
1327 select SYS_SUPPORTS_SMP
1328 select NR_CPUS_DEFAULT_16
1329 select WEAK_ORDERING
1330 select CPU_SUPPORTS_HIGHMEM
1331 select CPU_SUPPORTS_HUGEPAGES
1333 The Cavium Octeon processor is a highly integrated chip containing
1334 many ethernet hardware widgets for networking tasks. The processor
1335 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1336 Full details can be found at http://www.caviumnetworks.com.
1341 config CPU_NOP_WORKAROUNDS
1344 config CPU_JUMP_WORKAROUNDS
1347 config CPU_LOONGSON2F_WORKAROUNDS
1348 bool "Loongson 2F Workarounds"
1350 select CPU_NOP_WORKAROUNDS
1351 select CPU_JUMP_WORKAROUNDS
1353 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1354 require workarounds. Without workarounds the system may hang
1355 unexpectedly. For more information please refer to the gas
1356 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1358 Loongson 2F03 and later have fixed these issues and no workarounds
1359 are needed. The workarounds have no significant side effect on them
1360 but may decrease the performance of the system so this option should
1361 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1364 If unsure, please say Y.
1365 endif # CPU_LOONGSON2F
1367 config SYS_SUPPORTS_ZBOOT
1369 select HAVE_KERNEL_GZIP
1370 select HAVE_KERNEL_BZIP2
1371 select HAVE_KERNEL_LZMA
1372 select HAVE_KERNEL_LZO
1374 config SYS_SUPPORTS_ZBOOT_UART16550
1376 select SYS_SUPPORTS_ZBOOT
1378 config CPU_LOONGSON2
1380 select CPU_SUPPORTS_32BIT_KERNEL
1381 select CPU_SUPPORTS_64BIT_KERNEL
1382 select CPU_SUPPORTS_HIGHMEM
1384 config SYS_HAS_CPU_LOONGSON2E
1387 config SYS_HAS_CPU_LOONGSON2F
1389 select CPU_SUPPORTS_CPUFREQ
1390 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1391 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1393 config SYS_HAS_CPU_MIPS32_R1
1396 config SYS_HAS_CPU_MIPS32_R2
1399 config SYS_HAS_CPU_MIPS64_R1
1402 config SYS_HAS_CPU_MIPS64_R2
1405 config SYS_HAS_CPU_R3000
1408 config SYS_HAS_CPU_TX39XX
1411 config SYS_HAS_CPU_VR41XX
1414 config SYS_HAS_CPU_R4300
1417 config SYS_HAS_CPU_R4X00
1420 config SYS_HAS_CPU_TX49XX
1423 config SYS_HAS_CPU_R5000
1426 config SYS_HAS_CPU_R5432
1429 config SYS_HAS_CPU_R5500
1432 config SYS_HAS_CPU_R6000
1435 config SYS_HAS_CPU_NEVADA
1438 config SYS_HAS_CPU_R8000
1441 config SYS_HAS_CPU_R10000
1444 config SYS_HAS_CPU_RM7000
1447 config SYS_HAS_CPU_RM9000
1450 config SYS_HAS_CPU_SB1
1453 config SYS_HAS_CPU_CAVIUM_OCTEON
1457 # CPU may reorder R->R, R->W, W->R, W->W
1458 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1460 config WEAK_ORDERING
1464 # CPU may reorder reads and writes beyond LL/SC
1465 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1467 config WEAK_REORDERING_BEYOND_LLSC
1472 # These two indicate any level of the MIPS32 and MIPS64 architecture
1476 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1480 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1483 # These two indicate the revision of the architecture, either Release 1 or Release 2
1487 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1491 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1493 config SYS_SUPPORTS_32BIT_KERNEL
1495 config SYS_SUPPORTS_64BIT_KERNEL
1497 config CPU_SUPPORTS_32BIT_KERNEL
1499 config CPU_SUPPORTS_64BIT_KERNEL
1501 config CPU_SUPPORTS_CPUFREQ
1503 config CPU_SUPPORTS_ADDRWINCFG
1505 config CPU_SUPPORTS_HUGEPAGES
1507 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1509 config MIPS_PGD_C0_CONTEXT
1511 default y if 64BIT && CPU_MIPSR2
1514 # Set to y for ptrace access to watch registers.
1516 config HARDWARE_WATCHPOINTS
1518 default y if CPU_MIPSR1 || CPU_MIPSR2
1524 prompt "Kernel code model"
1526 You should only select this option if you have a workload that
1527 actually benefits from 64-bit processing or if your machine has
1528 large memory. You will only be presented a single option in this
1529 menu if your system does not support both 32-bit and 64-bit kernels.
1532 bool "32-bit kernel"
1533 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1536 Select this option if you want to build a 32-bit kernel.
1538 bool "64-bit kernel"
1539 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1540 select HAVE_SYSCALL_WRAPPERS
1542 Select this option if you want to build a 64-bit kernel.
1547 prompt "Kernel page size"
1548 default PAGE_SIZE_4KB
1550 config PAGE_SIZE_4KB
1552 depends on !CPU_LOONGSON2
1554 This option select the standard 4kB Linux page size. On some
1555 R3000-family processors this is the only available page size. Using
1556 4kB page size will minimize memory consumption and is therefore
1557 recommended for low memory systems.
1559 config PAGE_SIZE_8KB
1561 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1563 Using 8kB page size will result in higher performance kernel at
1564 the price of higher memory consumption. This option is available
1565 only on R8000 and cnMIPS processors. Note that you will need a
1566 suitable Linux distribution to support this.
1568 config PAGE_SIZE_16KB
1570 depends on !CPU_R3000 && !CPU_TX39XX
1572 Using 16kB page size will result in higher performance kernel at
1573 the price of higher memory consumption. This option is available on
1574 all non-R3000 family processors. Note that you will need a suitable
1575 Linux distribution to support this.
1577 config PAGE_SIZE_32KB
1579 depends on CPU_CAVIUM_OCTEON
1581 Using 32kB page size will result in higher performance kernel at
1582 the price of higher memory consumption. This option is available
1583 only on cnMIPS cores. Note that you will need a suitable Linux
1584 distribution to support this.
1586 config PAGE_SIZE_64KB
1588 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1590 Using 64kB page size will result in higher performance kernel at
1591 the price of higher memory consumption. This option is available on
1592 all non-R3000 family processor. Not that at the time of this
1593 writing this option is still high experimental.
1600 config IP22_CPU_SCACHE
1605 # Support for a MIPS32 / MIPS64 style S-caches
1607 config MIPS_CPU_SCACHE
1611 config R5000_CPU_SCACHE
1615 config RM7000_CPU_SCACHE
1619 config SIBYTE_DMA_PAGEOPS
1620 bool "Use DMA to clear/copy pages"
1623 Instead of using the CPU to zero and copy pages, use a Data Mover
1624 channel. These DMA channels are otherwise unused by the standard
1625 SiByte Linux port. Seems to give a small performance benefit.
1627 config CPU_HAS_PREFETCH
1631 prompt "MIPS MT options"
1633 config MIPS_MT_DISABLED
1634 bool "Disable multithreading support."
1636 Use this option if your workload can't take advantage of
1637 MIPS hardware multithreading support. On systems that don't have
1638 the option of an MT-enabled processor this option will be the only
1639 option in this menu.
1642 bool "Use 1 TC on each available VPE for SMP"
1643 depends on SYS_SUPPORTS_MULTITHREADING
1644 select CPU_MIPSR2_IRQ_VI
1645 select CPU_MIPSR2_IRQ_EI
1647 select NR_CPUS_DEFAULT_2
1649 select SYS_SUPPORTS_SCHED_SMT if SMP
1650 select SYS_SUPPORTS_SMP
1653 This is a kernel model which is known a VSMP but lately has been
1654 marketesed into SMVP.
1655 Virtual SMP uses the processor's VPEs to implement virtual
1656 processors. In currently available configuration of the 34K processor
1657 this allows for a dual processor. Both processors will share the same
1658 primary caches; each will obtain the half of the TLB for it's own
1659 exclusive use. For a layman this model can be described as similar to
1660 what Intel calls Hyperthreading.
1662 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1665 bool "SMTC: Use all TCs on all VPEs for SMP"
1666 depends on CPU_MIPS32_R2
1667 #depends on CPU_MIPS64_R2 # once there is hardware ...
1668 depends on SYS_SUPPORTS_MULTITHREADING
1669 select CPU_MIPSR2_IRQ_VI
1670 select CPU_MIPSR2_IRQ_EI
1672 select NR_CPUS_DEFAULT_8
1674 select SYS_SUPPORTS_SMP
1677 This is a kernel model which is known a SMTC or lately has been
1678 marketesed into SMVP.
1679 is presenting the available TC's of the core as processors to Linux.
1680 On currently available 34K processors this means a Linux system will
1681 see up to 5 processors. The implementation of the SMTC kernel differs
1682 significantly from VSMP and cannot efficiently coexist in the same
1683 kernel binary so the choice between VSMP and SMTC is a compile time
1686 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1694 bool "SMT (multithreading) scheduler support"
1695 depends on SYS_SUPPORTS_SCHED_SMT
1698 SMT scheduler support improves the CPU scheduler's decision making
1699 when dealing with MIPS MT enabled cores at a cost of slightly
1700 increased overhead in some places. If unsure say N here.
1702 config SYS_SUPPORTS_SCHED_SMT
1706 config SYS_SUPPORTS_MULTITHREADING
1709 config MIPS_MT_FPAFF
1710 bool "Dynamic FPU affinity for FP-intensive threads"
1712 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1714 config MIPS_VPE_LOADER
1715 bool "VPE loader support."
1716 depends on SYS_SUPPORTS_MULTITHREADING
1717 select CPU_MIPSR2_IRQ_VI
1718 select CPU_MIPSR2_IRQ_EI
1721 Includes a loader for loading an elf relocatable object
1722 onto another VPE and running it.
1724 config MIPS_MT_SMTC_IM_BACKSTOP
1725 bool "Use per-TC register bits as backstop for inhibited IM bits"
1726 depends on MIPS_MT_SMTC
1729 To support multiple TC microthreads acting as "CPUs" within
1730 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1731 during interrupt handling. To support legacy drivers and interrupt
1732 controller management code, SMTC has a "backstop" to track and
1733 if necessary restore the interrupt mask. This has some performance
1734 impact on interrupt service overhead.
1736 config MIPS_MT_SMTC_IRQAFF
1737 bool "Support IRQ affinity API"
1738 depends on MIPS_MT_SMTC
1741 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1742 for SMTC Linux kernel. Requires platform support, of which
1743 an example can be found in the MIPS kernel i8259 and Malta
1744 platform code. Adds some overhead to interrupt dispatch, and
1745 should be used only if you know what you are doing.
1747 config MIPS_VPE_LOADER_TOM
1748 bool "Load VPE program into memory hidden from linux"
1749 depends on MIPS_VPE_LOADER
1752 The loader can use memory that is present but has been hidden from
1753 Linux using the kernel command line option "mem=xxMB". It's up to
1754 you to ensure the amount you put in the option and the space your
1755 program requires is less or equal to the amount physically present.
1757 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1758 config MIPS_VPE_APSP_API
1759 bool "Enable support for AP/SP API (RTLX)"
1760 depends on MIPS_VPE_LOADER
1763 config MIPS_APSP_KSPD
1765 depends on MIPS_VPE_APSP_API
1768 KSPD is a kernel daemon that accepts syscall requests from the SP
1769 side, actions them and returns the results. It also handles the
1770 "exit" syscall notifying other kernel modules the SP program is
1771 exiting. You probably want to say yes here.
1774 bool "MIPS CMP framework support"
1775 depends on SYS_SUPPORTS_MIPS_CMP
1777 select SYS_SUPPORTS_SMP
1778 select SYS_SUPPORTS_SCHED_SMT if SMP
1779 select WEAK_ORDERING
1782 This is a placeholder option for the GCMP work. It will need to
1783 be handled differently...
1785 config SB1_PASS_1_WORKAROUNDS
1787 depends on CPU_SB1_PASS_1
1790 config SB1_PASS_2_WORKAROUNDS
1792 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1795 config SB1_PASS_2_1_WORKAROUNDS
1797 depends on CPU_SB1 && CPU_SB1_PASS_2
1800 config 64BIT_PHYS_ADDR
1803 config ARCH_PHYS_ADDR_T_64BIT
1804 def_bool 64BIT_PHYS_ADDR
1806 config CPU_HAS_SMARTMIPS
1807 depends on SYS_SUPPORTS_SMARTMIPS
1808 bool "Support for the SmartMIPS ASE"
1810 SmartMIPS is a extension of the MIPS32 architecture aimed at
1811 increased security at both hardware and software level for
1812 smartcards. Enabling this option will allow proper use of the
1813 SmartMIPS instructions by Linux applications. However a kernel with
1814 this option will not work on a MIPS core without SmartMIPS core. If
1815 you don't know you probably don't have SmartMIPS and should say N
1822 # Vectored interrupt mode is an R2 feature
1824 config CPU_MIPSR2_IRQ_VI
1828 # Extended interrupt mode is an R2 feature
1830 config CPU_MIPSR2_IRQ_EI
1835 depends on !CPU_R3000
1838 config GENERIC_CLOCKEVENTS_BROADCAST
1844 config CPU_DADDI_WORKAROUNDS
1847 config CPU_R4000_WORKAROUNDS
1849 select CPU_R4400_WORKAROUNDS
1851 config CPU_R4400_WORKAROUNDS
1855 # Use the generic interrupt handling code in kernel/irq/:
1857 config GENERIC_HARDIRQS
1861 config GENERIC_IRQ_PROBE
1869 # - Highmem only makes sense for the 32-bit kernel.
1870 # - The current highmem code will only work properly on physically indexed
1871 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1872 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1873 # moment we protect the user and offer the highmem option only on machines
1874 # where it's known to be safe. This will not offer highmem on a few systems
1875 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1876 # indexed CPUs but we're playing safe.
1877 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1878 # know they might have memory configurations that could make use of highmem
1882 bool "High Memory Support"
1883 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1885 config CPU_SUPPORTS_HIGHMEM
1888 config SYS_SUPPORTS_HIGHMEM
1891 config SYS_SUPPORTS_SMARTMIPS
1894 config ARCH_FLATMEM_ENABLE
1896 depends on !NUMA && !CPU_LOONGSON2
1898 config ARCH_DISCONTIGMEM_ENABLE
1900 default y if SGI_IP27
1902 Say Y to support efficient handling of discontiguous physical memory,
1903 for architectures which are either NUMA (Non-Uniform Memory Access)
1904 or have huge holes in the physical address space for other reasons.
1905 See <file:Documentation/vm/numa> for more.
1907 config ARCH_POPULATES_NODE_MAP
1910 config ARCH_SPARSEMEM_ENABLE
1912 select SPARSEMEM_STATIC
1916 depends on SYS_SUPPORTS_NUMA
1918 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1919 Access). This option improves performance on systems with more
1920 than two nodes; on two node systems it is generally better to
1921 leave it disabled; on single node systems disable this option
1924 config SYS_SUPPORTS_NUMA
1930 depends on NEED_MULTIPLE_NODES
1935 bool "Multi-Processing support"
1936 depends on SYS_SUPPORTS_SMP
1938 select USE_GENERIC_SMP_HELPERS
1940 This enables support for systems with more than one CPU. If you have
1941 a system with only one CPU, like most personal computers, say N. If
1942 you have a system with more than one CPU, say Y.
1944 If you say N here, the kernel will run on single and multiprocessor
1945 machines, but will use only one CPU of a multiprocessor machine. If
1946 you say Y here, the kernel will run on many, but not all,
1947 singleprocessor machines. On a singleprocessor machine, the kernel
1948 will run faster if you say N here.
1950 People using multiprocessor machines who say Y here should also say
1951 Y to "Enhanced Real Time Clock Support", below.
1953 See also the SMP-HOWTO available at
1954 <http://www.tldp.org/docs.html#howto>.
1956 If you don't know what to do here, say N.
1961 config SYS_SUPPORTS_MIPS_CMP
1964 config SYS_SUPPORTS_SMP
1967 config NR_CPUS_DEFAULT_1
1970 config NR_CPUS_DEFAULT_2
1973 config NR_CPUS_DEFAULT_4
1976 config NR_CPUS_DEFAULT_8
1979 config NR_CPUS_DEFAULT_16
1982 config NR_CPUS_DEFAULT_32
1985 config NR_CPUS_DEFAULT_64
1989 int "Maximum number of CPUs (2-64)"
1990 range 1 64 if NR_CPUS_DEFAULT_1
1992 default "1" if NR_CPUS_DEFAULT_1
1993 default "2" if NR_CPUS_DEFAULT_2
1994 default "4" if NR_CPUS_DEFAULT_4
1995 default "8" if NR_CPUS_DEFAULT_8
1996 default "16" if NR_CPUS_DEFAULT_16
1997 default "32" if NR_CPUS_DEFAULT_32
1998 default "64" if NR_CPUS_DEFAULT_64
2000 This allows you to specify the maximum number of CPUs which this
2001 kernel will support. The maximum supported value is 32 for 32-bit
2002 kernel and 64 for 64-bit kernels; the minimum value which makes
2003 sense is 1 for Qemu (useful only for kernel debugging purposes)
2004 and 2 for all others.
2006 This is purely to save memory - each supported CPU adds
2007 approximately eight kilobytes to the kernel image. For best
2008 performance should round up your number of processors to the next
2011 source "kernel/time/Kconfig"
2014 # Timer Interrupt Frequency Configuration
2018 prompt "Timer frequency"
2021 Allows the configuration of the timer frequency.
2024 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2027 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2030 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2033 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2036 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2039 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2042 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2046 config SYS_SUPPORTS_48HZ
2049 config SYS_SUPPORTS_100HZ
2052 config SYS_SUPPORTS_128HZ
2055 config SYS_SUPPORTS_250HZ
2058 config SYS_SUPPORTS_256HZ
2061 config SYS_SUPPORTS_1000HZ
2064 config SYS_SUPPORTS_1024HZ
2067 config SYS_SUPPORTS_ARBIT_HZ
2069 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2070 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2071 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2072 !SYS_SUPPORTS_1024HZ
2077 default 100 if HZ_100
2078 default 128 if HZ_128
2079 default 250 if HZ_250
2080 default 256 if HZ_256
2081 default 1000 if HZ_1000
2082 default 1024 if HZ_1024
2084 source "kernel/Kconfig.preempt"
2086 config MIPS_INSANE_LARGE
2087 bool "Support for large 64-bit configurations"
2088 depends on CPU_R10000 && 64BIT
2090 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2091 previous 64-bit processors which only supported 40 bit / 1TB. If you
2092 need processes of more than 1TB virtual address space, say Y here.
2093 This will result in additional memory usage, so it is not
2094 recommended for normal users.
2097 bool "Kexec system call (EXPERIMENTAL)"
2098 depends on EXPERIMENTAL
2100 kexec is a system call that implements the ability to shutdown your
2101 current kernel, and to start another kernel. It is like a reboot
2102 but it is independent of the system firmware. And like a reboot
2103 you can start any kernel with it, not just Linux.
2105 The name comes from the similarity to the exec system call.
2107 It is an ongoing process to be certain the hardware in a machine
2108 is properly shutdown, so do not be surprised if this code does not
2109 initially work for you. It may help to enable device hotplugging
2110 support. As of this writing the exact hardware interface is
2111 strongly in flux, so no good recommendation can be made.
2114 bool "Enable seccomp to safely compute untrusted bytecode"
2118 This kernel feature is useful for number crunching applications
2119 that may need to compute untrusted bytecode during their
2120 execution. By using pipes or other transports made available to
2121 the process as file descriptors supporting the read/write
2122 syscalls, it's possible to isolate those applications in
2123 their own address space using seccomp. Once seccomp is
2124 enabled via /proc/<pid>/seccomp, it cannot be disabled
2125 and the task is only allowed to execute a few safe syscalls
2126 defined by each seccomp mode.
2128 If unsure, say Y. Only embedded should say N here.
2131 bool "Flattened Device Tree support"
2135 Include support for flattened device tree machine descriptions.
2139 config LOCKDEP_SUPPORT
2143 config STACKTRACE_SUPPORT
2147 source "init/Kconfig"
2149 source "kernel/Kconfig.freezer"
2151 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2159 bool "Support for PCI controller"
2160 depends on HW_HAS_PCI
2163 Find out whether you have a PCI motherboard. PCI is the name of a
2164 bus system, i.e. the way the CPU talks to the other stuff inside
2165 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2171 source "drivers/pci/Kconfig"
2174 # ISA support is now enabled via select. Too many systems still have the one
2175 # or other ISA chip on the board that users don't know about so don't expect
2176 # users to choose the right thing ...
2183 depends on HW_HAS_EISA
2185 select GENERIC_ISA_DMA
2187 The Extended Industry Standard Architecture (EISA) bus was
2188 developed as an open alternative to the IBM MicroChannel bus.
2190 The EISA bus provided some of the features of the IBM MicroChannel
2191 bus while maintaining backward compatibility with cards made for
2192 the older ISA bus. The EISA bus saw limited use between 1988 and
2193 1995 when it was made obsolete by the PCI bus.
2195 Say Y here if you are building a kernel for an EISA-based machine.
2199 source "drivers/eisa/Kconfig"
2202 bool "TURBOchannel support"
2203 depends on MACH_DECSTATION
2205 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2206 processors. TURBOchannel programming specifications are available
2208 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2210 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2211 Linux driver support status is documented at:
2212 <http://www.linux-mips.org/wiki/DECstation>
2215 # bool "Access.Bus support"
2224 select MIPS_EXTERNAL_TIMER
2229 source "drivers/pcmcia/Kconfig"
2231 source "drivers/pci/hotplug/Kconfig"
2235 menu "Executable file formats"
2237 source "fs/Kconfig.binfmt"
2242 config MIPS32_COMPAT
2243 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2246 Select this option if you want Linux/MIPS 32-bit binary
2247 compatibility. Since all software available for Linux/MIPS is
2248 currently 32-bit you should say Y here.
2252 depends on MIPS32_COMPAT
2255 config SYSVIPC_COMPAT
2257 depends on COMPAT && SYSVIPC
2261 bool "Kernel support for o32 binaries"
2262 depends on MIPS32_COMPAT
2264 Select this option if you want to run o32 binaries. These are pure
2265 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2266 existing binaries are in this format.
2271 bool "Kernel support for n32 binaries"
2272 depends on MIPS32_COMPAT
2274 Select this option if you want to run n32 binaries. These are
2275 64-bit binaries using 32-bit quantities for addressing and certain
2276 data that would normally be 64-bit. They are used in special
2283 default y if MIPS32_O32 || MIPS32_N32
2287 menu "Power management options"
2289 config ARCH_HIBERNATION_POSSIBLE
2291 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2293 config ARCH_SUSPEND_POSSIBLE
2295 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2297 source "kernel/power/Kconfig"
2301 source "arch/mips/kernel/cpufreq/Kconfig"
2303 source "net/Kconfig"
2305 source "drivers/Kconfig"
2309 source "arch/mips/Kconfig.debug"
2311 source "security/Kconfig"
2313 source "crypto/Kconfig"
2315 source "lib/Kconfig"