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
13 select RTC_LIB if !MACH_LOONGSON
15 mainmenu "Linux/MIPS Kernel Configuration"
17 menu "Machine selection"
27 bool "Alchemy processor based machines"
28 select SYS_SUPPORTS_ZBOOT
31 bool "Texas Instruments AR7"
33 select DMA_NONCOHERENT
39 select SYS_HAS_CPU_MIPS32_R1
40 select SYS_HAS_EARLY_PRINTK
41 select SYS_SUPPORTS_32BIT_KERNEL
42 select SYS_SUPPORTS_LITTLE_ENDIAN
43 select SYS_SUPPORTS_ZBOOT_UART16550
44 select ARCH_REQUIRE_GPIOLIB
48 Support for the Texas Instruments AR7 System-on-a-Chip
49 family: TNETD7100, 7200 and 7300.
52 bool "Broadcom BCM47XX based boards"
55 select DMA_NONCOHERENT
58 select SYS_HAS_CPU_MIPS32_R1
59 select SYS_SUPPORTS_32BIT_KERNEL
60 select SYS_SUPPORTS_LITTLE_ENDIAN
62 select SSB_DRIVER_MIPS
63 select SSB_DRIVER_EXTIF
65 select SSB_PCICORE_HOSTMODE if PCI
67 select SYS_HAS_EARLY_PRINTK
70 Support for BCM47XX based boards
73 bool "Broadcom BCM63XX based boards"
76 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_BIG_ENDIAN
81 select SYS_HAS_EARLY_PRINTK
83 select ARCH_REQUIRE_GPIOLIB
85 Support for BCM63XX based boards
92 select DMA_NONCOHERENT
98 select PCI_GT64XXX_PCI0
100 select SYS_HAS_CPU_NEVADA
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_64BIT_KERNEL
104 select SYS_SUPPORTS_LITTLE_ENDIAN
106 config MACH_DECSTATION
113 select CPU_DADDI_WORKAROUNDS if 64BIT
114 select CPU_R4000_WORKAROUNDS if 64BIT
115 select CPU_R4400_WORKAROUNDS if 64BIT
116 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_R3000
120 select SYS_HAS_CPU_R4X00
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
123 select SYS_SUPPORTS_LITTLE_ENDIAN
124 select SYS_SUPPORTS_128HZ
125 select SYS_SUPPORTS_256HZ
126 select SYS_SUPPORTS_1024HZ
128 This enables support for DEC's MIPS based workstations. For details
129 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
130 DECstation porting pages on <http://decstation.unix-ag.org/>.
132 If you have one of the following DECstation Models you definitely
133 want to choose R4xx0 for the CPU Type:
140 otherwise choose R3000.
143 bool "Jazz family of machines"
146 select ARCH_MAY_HAVE_PC_FDC
149 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
150 select GENERIC_ISA_DMA
155 select SYS_HAS_CPU_R4X00
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
158 select SYS_SUPPORTS_100HZ
160 This a family of machines based on the MIPS R4030 chipset which was
161 used by several vendors to build RISC/os and Windows NT workstations.
162 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
163 Olivetti M700-10 workstations.
166 bool "LASAT Networks platforms"
169 select DMA_NONCOHERENT
170 select SYS_HAS_EARLY_PRINTK
173 select PCI_GT64XXX_PCI0
175 select R5000_CPU_SCACHE
176 select SYS_HAS_CPU_R5000
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
179 select SYS_SUPPORTS_LITTLE_ENDIAN
182 bool "Loongson family of machines"
183 select SYS_SUPPORTS_ZBOOT
185 This enables the support of Loongson family of machines.
187 Loongson is a family of general-purpose MIPS-compatible CPUs.
188 developed at Institute of Computing Technology (ICT),
189 Chinese Academy of Sciences (CAS) in the People's Republic
190 of China. The chief architect is Professor Weiwu Hu.
193 bool "MIPS Malta board"
194 select ARCH_MAY_HAVE_PC_FDC
199 select DMA_NONCOHERENT
200 select GENERIC_ISA_DMA
206 select MIPS_BOARDS_GEN
208 select MIPS_CPU_SCACHE
209 select PCI_GT64XXX_PCI0
212 select SYS_HAS_CPU_MIPS32_R1
213 select SYS_HAS_CPU_MIPS32_R2
214 select SYS_HAS_CPU_MIPS64_R1
215 select SYS_HAS_CPU_NEVADA
216 select SYS_HAS_CPU_RM7000
217 select SYS_HAS_EARLY_PRINTK
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_64BIT_KERNEL
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_LITTLE_ENDIAN
222 select SYS_SUPPORTS_MIPS_CMP
223 select SYS_SUPPORTS_MULTITHREADING
224 select SYS_SUPPORTS_SMARTMIPS
225 select SYS_SUPPORTS_ZBOOT
227 This enables support for the MIPS Technologies Malta evaluation
231 bool 'MIPS simulator (MIPSsim)'
234 select DMA_NONCOHERENT
235 select SYS_HAS_EARLY_PRINTK
238 select SYS_HAS_CPU_MIPS32_R1
239 select SYS_HAS_CPU_MIPS32_R2
240 select SYS_HAS_EARLY_PRINTK
241 select SYS_SUPPORTS_32BIT_KERNEL
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_MULTITHREADING
244 select SYS_SUPPORTS_LITTLE_ENDIAN
246 This option enables support for MIPS Technologies MIPSsim software
250 bool "NEC EMMA2RH Mark-eins board"
254 This enables support for the NEC Electronics Mark-eins boards.
257 bool "NEC VR4100 series based machines"
260 select SYS_HAS_CPU_VR41XX
261 select ARCH_REQUIRE_GPIOLIB
264 bool "NXP STB220 board"
267 Support for NXP Semiconductors STB220 Development Board.
274 Support for NXP Semiconductors STB225 Development Board.
277 bool "NXP PNX8550 based JBS board"
279 select SYS_SUPPORTS_LITTLE_ENDIAN
281 config PNX8550_STB810
282 bool "NXP PNX8550 based STB810 board"
284 select SYS_SUPPORTS_LITTLE_ENDIAN
287 bool "PMC-Sierra MSP chipsets"
288 depends on EXPERIMENTAL
289 select DMA_NONCOHERENT
291 select NO_EXCEPT_FILL
293 select SYS_HAS_CPU_MIPS32_R1
294 select SYS_HAS_CPU_MIPS32_R2
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
299 select SERIAL_8250_CONSOLE
301 This adds support for the PMC-Sierra family of Multi-Service
302 Processor System-On-A-Chips. These parts include a number
303 of integrated peripherals, interfaces and DSPs in addition to
304 a variety of MIPS cores.
307 bool "PMC-Sierra Yosemite eval board"
316 select SYS_HAS_CPU_RM9000
317 select SYS_HAS_EARLY_PRINTK
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_HIGHMEM
322 select SYS_SUPPORTS_SMP
324 Yosemite is an evaluation board for the RM9000x2 processor
325 manufactured by PMC-Sierra.
331 select CPU_MIPSR2_IRQ_VI
332 select CPU_MIPSR2_IRQ_EI
334 select DMA_NONCOHERENT
336 select SYS_HAS_EARLY_PRINTK
337 select SYS_HAS_CPU_MIPS32_R2
338 select SYS_SUPPORTS_32BIT_KERNEL
339 select SYS_SUPPORTS_BIG_ENDIAN
340 select SYS_SUPPORTS_HIGHMEM
341 select USB_OHCI_LITTLE_ENDIAN
343 This enables support for the Cisco PowerTV Platform.
346 bool "SGI IP22 (Indy/Indigo2)"
352 select DEFAULT_SGI_PARTITION
353 select DMA_NONCOHERENT
357 select IP22_CPU_SCACHE
359 select GENERIC_ISA_DMA_SUPPORT_BROKEN
361 select SGI_HAS_INDYDOG
367 select SYS_HAS_CPU_R4X00
368 select SYS_HAS_CPU_R5000
370 # Disable EARLY_PRINTK for now since it leads to overwritten prom
371 # memory during early boot on some machines.
373 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
374 # for a more details discussion
376 # select SYS_HAS_EARLY_PRINTK
377 select SYS_SUPPORTS_32BIT_KERNEL
378 select SYS_SUPPORTS_64BIT_KERNEL
379 select SYS_SUPPORTS_BIG_ENDIAN
381 This are the SGI Indy, Challenge S and Indigo2, as well as certain
382 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
383 that runs on these, say Y here.
386 bool "SGI IP27 (Origin200/2000)"
390 select DEFAULT_SGI_PARTITION
392 select SYS_HAS_EARLY_PRINTK
394 select NR_CPUS_DEFAULT_64
395 select SYS_HAS_CPU_R10000
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
398 select SYS_SUPPORTS_NUMA
399 select SYS_SUPPORTS_SMP
401 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
402 workstations. To compile a Linux kernel that runs on these, say Y
406 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
407 depends on EXPERIMENTAL
413 select DEFAULT_SGI_PARTITION
414 select DMA_NONCOHERENT
415 select GENERIC_ISA_DMA_SUPPORT_BROKEN
421 select SGI_HAS_INDYDOG
427 select SYS_HAS_CPU_R10000
429 # Disable EARLY_PRINTK for now since it leads to overwritten prom
430 # memory during early boot on some machines.
432 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
433 # for a more details discussion
435 # select SYS_HAS_EARLY_PRINTK
436 select SYS_SUPPORTS_64BIT_KERNEL
437 select SYS_SUPPORTS_BIG_ENDIAN
439 This is the SGI Indigo2 with R10000 processor. To compile a Linux
440 kernel that runs on these, say Y here.
449 select DMA_NONCOHERENT
452 select R5000_CPU_SCACHE
453 select RM7000_CPU_SCACHE
454 select SYS_HAS_CPU_R5000
455 select SYS_HAS_CPU_R10000 if BROKEN
456 select SYS_HAS_CPU_RM7000
457 select SYS_HAS_CPU_NEVADA
458 select SYS_SUPPORTS_64BIT_KERNEL
459 select SYS_SUPPORTS_BIG_ENDIAN
461 If you want this kernel to run on SGI O2 workstation, say Y here.
464 bool "Sibyte BCM91120C-CRhine"
465 depends on EXPERIMENTAL
468 select SIBYTE_BCM1120
470 select SYS_HAS_CPU_SB1
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_LITTLE_ENDIAN
475 bool "Sibyte BCM91120x-Carmel"
476 depends on EXPERIMENTAL
479 select SIBYTE_BCM1120
481 select SYS_HAS_CPU_SB1
482 select SYS_SUPPORTS_BIG_ENDIAN
483 select SYS_SUPPORTS_LITTLE_ENDIAN
486 bool "Sibyte BCM91125C-CRhone"
487 depends on EXPERIMENTAL
490 select SIBYTE_BCM1125
492 select SYS_HAS_CPU_SB1
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_HIGHMEM
495 select SYS_SUPPORTS_LITTLE_ENDIAN
498 bool "Sibyte BCM91125E-Rhone"
499 depends on EXPERIMENTAL
502 select SIBYTE_BCM1125H
504 select SYS_HAS_CPU_SB1
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_LITTLE_ENDIAN
509 bool "Sibyte BCM91250A-SWARM"
512 select HAVE_PATA_PLATFORM
513 select NR_CPUS_DEFAULT_2
516 select SYS_HAS_CPU_SB1
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select ZONE_DMA32 if 64BIT
522 config SIBYTE_LITTLESUR
523 bool "Sibyte BCM91250C2-LittleSur"
524 depends on EXPERIMENTAL
527 select HAVE_PATA_PLATFORM
528 select NR_CPUS_DEFAULT_2
531 select SYS_HAS_CPU_SB1
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
536 config SIBYTE_SENTOSA
537 bool "Sibyte BCM91250E-Sentosa"
538 depends on EXPERIMENTAL
541 select NR_CPUS_DEFAULT_2
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_LITTLE_ENDIAN
549 bool "Sibyte BCM91480B-BigSur"
552 select NR_CPUS_DEFAULT_4
553 select SIBYTE_BCM1x80
555 select SYS_HAS_CPU_SB1
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_HIGHMEM
558 select SYS_SUPPORTS_LITTLE_ENDIAN
559 select ZONE_DMA32 if 64BIT
562 bool "SNI RM200/300/400"
563 select ARC if CPU_LITTLE_ENDIAN
564 select ARC32 if CPU_LITTLE_ENDIAN
565 select SNIPROM if CPU_BIG_ENDIAN
566 select ARCH_MAY_HAVE_PC_FDC
570 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
571 select DMA_NONCOHERENT
572 select GENERIC_ISA_DMA
579 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
580 select SYS_HAS_CPU_R4X00
581 select SYS_HAS_CPU_R5000
582 select SYS_HAS_CPU_R10000
583 select R5000_CPU_SCACHE
584 select SYS_HAS_EARLY_PRINTK
585 select SYS_SUPPORTS_32BIT_KERNEL
586 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
587 select SYS_SUPPORTS_BIG_ENDIAN
588 select SYS_SUPPORTS_HIGHMEM
589 select SYS_SUPPORTS_LITTLE_ENDIAN
591 The SNI RM200/300/400 are MIPS-based machines manufactured by
592 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
593 Technology and now in turn merged with Fujitsu. Say Y here to
594 support this machine type.
597 bool "Toshiba TX39 series based machines"
600 bool "Toshiba TX49 series based machines"
602 config MIKROTIK_RB532
603 bool "Mikrotik RB532 boards"
606 select DMA_NONCOHERENT
609 select SYS_HAS_CPU_MIPS32_R1
610 select SYS_SUPPORTS_32BIT_KERNEL
611 select SYS_SUPPORTS_LITTLE_ENDIAN
614 select ARCH_REQUIRE_GPIOLIB
616 Support the Mikrotik(tm) RouterBoard 532 series,
617 based on the IDT RC32434 SoC.
620 bool "Wind River PPMC board"
625 select DMA_NONCOHERENT
627 select PCI_GT64XXX_PCI0
629 select SYS_HAS_CPU_MIPS32_R1
630 select SYS_HAS_CPU_MIPS32_R2
631 select SYS_HAS_CPU_MIPS64_R1
632 select SYS_HAS_CPU_NEVADA
633 select SYS_HAS_CPU_RM7000
634 select SYS_SUPPORTS_32BIT_KERNEL
635 select SYS_SUPPORTS_64BIT_KERNEL
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select SYS_SUPPORTS_LITTLE_ENDIAN
639 This enables support for the Wind River MIPS32 4KC PPMC evaluation
640 board, which is based on GT64120 bridge chip.
642 config CAVIUM_OCTEON_SIMULATOR
643 bool "Cavium Networks Octeon Simulator"
645 select 64BIT_PHYS_ADDR
647 select SYS_SUPPORTS_64BIT_KERNEL
648 select SYS_SUPPORTS_BIG_ENDIAN
649 select SYS_SUPPORTS_HIGHMEM
650 select SYS_SUPPORTS_HOTPLUG_CPU
651 select SYS_HAS_CPU_CAVIUM_OCTEON
653 The Octeon simulator is software performance model of the Cavium
654 Octeon Processor. It supports simulating Octeon processors on x86
657 config CAVIUM_OCTEON_REFERENCE_BOARD
658 bool "Cavium Networks Octeon reference board"
660 select 64BIT_PHYS_ADDR
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select SYS_SUPPORTS_HIGHMEM
665 select SYS_SUPPORTS_HOTPLUG_CPU
666 select SYS_HAS_EARLY_PRINTK
667 select SYS_HAS_CPU_CAVIUM_OCTEON
670 select ARCH_SUPPORTS_MSI
672 This option supports all of the Octeon reference boards from Cavium
673 Networks. It builds a kernel that dynamically determines the Octeon
674 CPU type and supports all known board reference implementations.
675 Some of the supported boards are:
682 Say Y here for most Octeon reference boards.
686 source "arch/mips/alchemy/Kconfig"
687 source "arch/mips/bcm63xx/Kconfig"
688 source "arch/mips/jazz/Kconfig"
689 source "arch/mips/lasat/Kconfig"
690 source "arch/mips/pmc-sierra/Kconfig"
691 source "arch/mips/powertv/Kconfig"
692 source "arch/mips/sgi-ip27/Kconfig"
693 source "arch/mips/sibyte/Kconfig"
694 source "arch/mips/txx9/Kconfig"
695 source "arch/mips/vr41xx/Kconfig"
696 source "arch/mips/cavium-octeon/Kconfig"
697 source "arch/mips/loongson/Kconfig"
701 config RWSEM_GENERIC_SPINLOCK
705 config RWSEM_XCHGADD_ALGORITHM
708 config ARCH_HAS_ILOG2_U32
712 config ARCH_HAS_ILOG2_U64
716 config ARCH_SUPPORTS_OPROFILE
718 default y if !MIPS_MT_SMTC
720 config GENERIC_FIND_NEXT_BIT
724 config GENERIC_HWEIGHT
728 config GENERIC_CALIBRATE_DELAY
732 config GENERIC_CLOCKEVENTS
740 config GENERIC_CMOS_UPDATE
744 config SCHED_OMIT_FRAME_POINTER
748 config GENERIC_HARDIRQS_NO__DO_IRQ
752 # Select some configuration options automatically based on user selections.
757 config ARCH_MAY_HAVE_PC_FDC
806 select ARCH_REQUIRE_GPIOLIB
815 config DMA_NONCOHERENT
817 select NEED_DMA_MAP_STATE
819 config NEED_DMA_MAP_STATE
822 config SYS_HAS_EARLY_PRINTK
826 bool "Support for hot-pluggable CPUs"
827 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
829 Say Y here to allow turning CPUs off and on. CPUs can be
830 controlled through /sys/devices/system/cpu.
831 (Note: power management support will enable this option
832 automatically on SMP systems. )
833 Say N if you want to disable CPU hotplug.
835 config SYS_SUPPORTS_HOTPLUG_CPU
850 config MIPS_DISABLE_OBSOLETE_IDE
859 config GENERIC_ISA_DMA
861 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
863 config GENERIC_ISA_DMA_SUPPORT_BROKEN
865 select GENERIC_ISA_DMA
871 # Endianess selection. Sufficiently obscure so many users don't know what to
872 # answer,so we try hard to limit the available choices. Also the use of a
873 # choice statement should be more obvious to the user.
876 prompt "Endianess selection"
878 Some MIPS machines can be configured for either little or big endian
879 byte order. These modes require different kernels and a different
880 Linux distribution. In general there is one preferred byteorder for a
881 particular system but some systems are just as commonly used in the
882 one or the other endianness.
884 config CPU_BIG_ENDIAN
886 depends on SYS_SUPPORTS_BIG_ENDIAN
888 config CPU_LITTLE_ENDIAN
890 depends on SYS_SUPPORTS_LITTLE_ENDIAN
895 config SYS_SUPPORTS_APM_EMULATION
898 config SYS_SUPPORTS_BIG_ENDIAN
901 config SYS_SUPPORTS_LITTLE_ENDIAN
904 config SYS_SUPPORTS_HUGETLBFS
906 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
933 config IRQ_CPU_OCTEON
936 config MIPS_BOARDS_GEN
939 config PCI_GT64XXX_PCI0
942 config NO_EXCEPT_FILL
953 select DMA_NONCOHERENT
956 select SYS_HAS_CPU_R5500
957 select SYS_SUPPORTS_32BIT_KERNEL
958 select SYS_SUPPORTS_64BIT_KERNEL
959 select SYS_SUPPORTS_BIG_ENDIAN
966 select DMA_NONCOHERENT
967 select SYS_HAS_CPU_MIPS32_R2
968 select SYS_SUPPORTS_32BIT_KERNEL
969 select SYS_SUPPORTS_LITTLE_ENDIAN
970 select SYS_SUPPORTS_BIG_ENDIAN
972 select CPU_MIPSR2_IRQ_VI
984 select DMA_NONCOHERENT
986 select SYS_HAS_CPU_MIPS32_R1
987 select SYS_HAS_EARLY_PRINTK
988 select SYS_SUPPORTS_32BIT_KERNEL
997 config SGI_HAS_INDYDOG
1009 config SGI_HAS_ZILOG
1012 config SGI_HAS_I8042
1015 config DEFAULT_SGI_PARTITION
1027 config MIPS_L1_CACHE_SHIFT
1029 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1030 default "6" if MIPS_CPU_SCACHE
1031 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1034 config HAVE_STD_PC_SERIAL_PORT
1038 bool "ARC console support"
1039 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1043 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1048 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1057 menu "CPU selection"
1063 config CPU_LOONGSON2E
1065 depends on SYS_HAS_CPU_LOONGSON2E
1066 select CPU_LOONGSON2
1068 The Loongson 2E processor implements the MIPS III instruction set
1069 with many extensions.
1071 It has an internal FPGA northbridge, which is compatiable to
1074 config CPU_LOONGSON2F
1076 depends on SYS_HAS_CPU_LOONGSON2F
1077 select CPU_LOONGSON2
1079 The Loongson 2F processor implements the MIPS III instruction set
1080 with many extensions.
1082 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1083 have a similar programming interface with FPGA northbridge used in
1086 config CPU_MIPS32_R1
1087 bool "MIPS32 Release 1"
1088 depends on SYS_HAS_CPU_MIPS32_R1
1089 select CPU_HAS_PREFETCH
1090 select CPU_SUPPORTS_32BIT_KERNEL
1091 select CPU_SUPPORTS_HIGHMEM
1093 Choose this option to build a kernel for release 1 or later of the
1094 MIPS32 architecture. Most modern embedded systems with a 32-bit
1095 MIPS processor are based on a MIPS32 processor. If you know the
1096 specific type of processor in your system, choose those that one
1097 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1098 Release 2 of the MIPS32 architecture is available since several
1099 years so chances are you even have a MIPS32 Release 2 processor
1100 in which case you should choose CPU_MIPS32_R2 instead for better
1103 config CPU_MIPS32_R2
1104 bool "MIPS32 Release 2"
1105 depends on SYS_HAS_CPU_MIPS32_R2
1106 select CPU_HAS_PREFETCH
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_HIGHMEM
1110 Choose this option to build a kernel for release 2 or later of the
1111 MIPS32 architecture. Most modern embedded systems with a 32-bit
1112 MIPS processor are based on a MIPS32 processor. If you know the
1113 specific type of processor in your system, choose those that one
1114 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1116 config CPU_MIPS64_R1
1117 bool "MIPS64 Release 1"
1118 depends on SYS_HAS_CPU_MIPS64_R1
1119 select CPU_HAS_PREFETCH
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1122 select CPU_SUPPORTS_HIGHMEM
1123 select CPU_SUPPORTS_HUGEPAGES
1125 Choose this option to build a kernel for release 1 or later of the
1126 MIPS64 architecture. Many modern embedded systems with a 64-bit
1127 MIPS processor are based on a MIPS64 processor. If you know the
1128 specific type of processor in your system, choose those that one
1129 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1130 Release 2 of the MIPS64 architecture is available since several
1131 years so chances are you even have a MIPS64 Release 2 processor
1132 in which case you should choose CPU_MIPS64_R2 instead for better
1135 config CPU_MIPS64_R2
1136 bool "MIPS64 Release 2"
1137 depends on SYS_HAS_CPU_MIPS64_R2
1138 select CPU_HAS_PREFETCH
1139 select CPU_SUPPORTS_32BIT_KERNEL
1140 select CPU_SUPPORTS_64BIT_KERNEL
1141 select CPU_SUPPORTS_HIGHMEM
1142 select CPU_SUPPORTS_HUGEPAGES
1144 Choose this option to build a kernel for release 2 or later of the
1145 MIPS64 architecture. Many modern embedded systems with a 64-bit
1146 MIPS processor are based on a MIPS64 processor. If you know the
1147 specific type of processor in your system, choose those that one
1148 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1152 depends on SYS_HAS_CPU_R3000
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_HIGHMEM
1157 Please make sure to pick the right CPU type. Linux/MIPS is not
1158 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1159 *not* work on R4000 machines and vice versa. However, since most
1160 of the supported machines have an R4000 (or similar) CPU, R4x00
1161 might be a safe bet. If the resulting kernel does not work,
1162 try to recompile with R3000.
1166 depends on SYS_HAS_CPU_TX39XX
1167 select CPU_SUPPORTS_32BIT_KERNEL
1171 depends on SYS_HAS_CPU_VR41XX
1172 select CPU_SUPPORTS_32BIT_KERNEL
1173 select CPU_SUPPORTS_64BIT_KERNEL
1175 The options selects support for the NEC VR4100 series of processors.
1176 Only choose this option if you have one of these processors as a
1177 kernel built with this option will not run on any other type of
1178 processor or vice versa.
1182 depends on SYS_HAS_CPU_R4300
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_64BIT_KERNEL
1186 MIPS Technologies R4300-series processors.
1190 depends on SYS_HAS_CPU_R4X00
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_64BIT_KERNEL
1194 MIPS Technologies R4000-series processors other than 4300, including
1195 the R4000, R4400, R4600, and 4700.
1199 depends on SYS_HAS_CPU_TX49XX
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1206 depends on SYS_HAS_CPU_R5000
1207 select CPU_SUPPORTS_32BIT_KERNEL
1208 select CPU_SUPPORTS_64BIT_KERNEL
1210 MIPS Technologies R5000-series processors other than the Nevada.
1214 depends on SYS_HAS_CPU_R5432
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1220 depends on SYS_HAS_CPU_R5500
1221 select CPU_SUPPORTS_32BIT_KERNEL
1222 select CPU_SUPPORTS_64BIT_KERNEL
1223 select CPU_SUPPORTS_HUGEPAGES
1225 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1230 depends on EXPERIMENTAL
1231 depends on SYS_HAS_CPU_R6000
1232 select CPU_SUPPORTS_32BIT_KERNEL
1234 MIPS Technologies R6000 and R6000A series processors. Note these
1235 processors are extremely rare and the support for them is incomplete.
1239 depends on SYS_HAS_CPU_NEVADA
1240 select CPU_SUPPORTS_32BIT_KERNEL
1241 select CPU_SUPPORTS_64BIT_KERNEL
1243 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1247 depends on EXPERIMENTAL
1248 depends on SYS_HAS_CPU_R8000
1249 select CPU_HAS_PREFETCH
1250 select CPU_SUPPORTS_64BIT_KERNEL
1252 MIPS Technologies R8000 processors. Note these processors are
1253 uncommon and the support for them is incomplete.
1257 depends on SYS_HAS_CPU_R10000
1258 select CPU_HAS_PREFETCH
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_64BIT_KERNEL
1261 select CPU_SUPPORTS_HIGHMEM
1263 MIPS Technologies R10000-series processors.
1267 depends on SYS_HAS_CPU_RM7000
1268 select CPU_HAS_PREFETCH
1269 select CPU_SUPPORTS_32BIT_KERNEL
1270 select CPU_SUPPORTS_64BIT_KERNEL
1271 select CPU_SUPPORTS_HIGHMEM
1275 depends on SYS_HAS_CPU_RM9000
1276 select CPU_HAS_PREFETCH
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1279 select CPU_SUPPORTS_HIGHMEM
1280 select WEAK_ORDERING
1284 depends on SYS_HAS_CPU_SB1
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HIGHMEM
1288 select WEAK_ORDERING
1290 config CPU_CAVIUM_OCTEON
1291 bool "Cavium Octeon processor"
1292 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1294 select IRQ_CPU_OCTEON
1295 select CPU_HAS_PREFETCH
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select SYS_SUPPORTS_SMP
1298 select NR_CPUS_DEFAULT_16
1299 select WEAK_ORDERING
1300 select CPU_SUPPORTS_HIGHMEM
1301 select CPU_SUPPORTS_HUGEPAGES
1303 The Cavium Octeon processor is a highly integrated chip containing
1304 many ethernet hardware widgets for networking tasks. The processor
1305 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1306 Full details can be found at http://www.caviumnetworks.com.
1310 config SYS_SUPPORTS_ZBOOT
1312 select HAVE_KERNEL_GZIP
1313 select HAVE_KERNEL_BZIP2
1314 select HAVE_KERNEL_LZMA
1315 select HAVE_KERNEL_LZO
1317 config SYS_SUPPORTS_ZBOOT_UART16550
1319 select SYS_SUPPORTS_ZBOOT
1321 config CPU_LOONGSON2
1323 select CPU_SUPPORTS_32BIT_KERNEL
1324 select CPU_SUPPORTS_64BIT_KERNEL
1325 select CPU_SUPPORTS_HIGHMEM
1327 config SYS_HAS_CPU_LOONGSON2E
1330 config SYS_HAS_CPU_LOONGSON2F
1332 select CPU_SUPPORTS_CPUFREQ
1333 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1334 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1336 config SYS_HAS_CPU_MIPS32_R1
1339 config SYS_HAS_CPU_MIPS32_R2
1342 config SYS_HAS_CPU_MIPS64_R1
1345 config SYS_HAS_CPU_MIPS64_R2
1348 config SYS_HAS_CPU_R3000
1351 config SYS_HAS_CPU_TX39XX
1354 config SYS_HAS_CPU_VR41XX
1357 config SYS_HAS_CPU_R4300
1360 config SYS_HAS_CPU_R4X00
1363 config SYS_HAS_CPU_TX49XX
1366 config SYS_HAS_CPU_R5000
1369 config SYS_HAS_CPU_R5432
1372 config SYS_HAS_CPU_R5500
1375 config SYS_HAS_CPU_R6000
1378 config SYS_HAS_CPU_NEVADA
1381 config SYS_HAS_CPU_R8000
1384 config SYS_HAS_CPU_R10000
1387 config SYS_HAS_CPU_RM7000
1390 config SYS_HAS_CPU_RM9000
1393 config SYS_HAS_CPU_SB1
1396 config SYS_HAS_CPU_CAVIUM_OCTEON
1400 # CPU may reorder R->R, R->W, W->R, W->W
1401 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1403 config WEAK_ORDERING
1407 # CPU may reorder reads and writes beyond LL/SC
1408 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1410 config WEAK_REORDERING_BEYOND_LLSC
1415 # These two indicate any level of the MIPS32 and MIPS64 architecture
1419 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1423 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1426 # These two indicate the revision of the architecture, either Release 1 or Release 2
1430 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1434 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1436 config SYS_SUPPORTS_32BIT_KERNEL
1438 config SYS_SUPPORTS_64BIT_KERNEL
1440 config CPU_SUPPORTS_32BIT_KERNEL
1442 config CPU_SUPPORTS_64BIT_KERNEL
1444 config CPU_SUPPORTS_CPUFREQ
1446 config CPU_SUPPORTS_ADDRWINCFG
1448 config CPU_SUPPORTS_HUGEPAGES
1450 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1452 config MIPS_PGD_C0_CONTEXT
1454 default y if 64BIT && CPU_MIPSR2
1457 # Set to y for ptrace access to watch registers.
1459 config HARDWARE_WATCHPOINTS
1461 default y if CPU_MIPSR1 || CPU_MIPSR2
1467 prompt "Kernel code model"
1469 You should only select this option if you have a workload that
1470 actually benefits from 64-bit processing or if your machine has
1471 large memory. You will only be presented a single option in this
1472 menu if your system does not support both 32-bit and 64-bit kernels.
1475 bool "32-bit kernel"
1476 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1479 Select this option if you want to build a 32-bit kernel.
1481 bool "64-bit kernel"
1482 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1483 select HAVE_SYSCALL_WRAPPERS
1485 Select this option if you want to build a 64-bit kernel.
1490 prompt "Kernel page size"
1491 default PAGE_SIZE_4KB
1493 config PAGE_SIZE_4KB
1495 depends on !CPU_LOONGSON2
1497 This option select the standard 4kB Linux page size. On some
1498 R3000-family processors this is the only available page size. Using
1499 4kB page size will minimize memory consumption and is therefore
1500 recommended for low memory systems.
1502 config PAGE_SIZE_8KB
1504 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1506 Using 8kB page size will result in higher performance kernel at
1507 the price of higher memory consumption. This option is available
1508 only on R8000 and cnMIPS processors. Note that you will need a
1509 suitable Linux distribution to support this.
1511 config PAGE_SIZE_16KB
1513 depends on !CPU_R3000 && !CPU_TX39XX
1515 Using 16kB page size will result in higher performance kernel at
1516 the price of higher memory consumption. This option is available on
1517 all non-R3000 family processors. Note that you will need a suitable
1518 Linux distribution to support this.
1520 config PAGE_SIZE_32KB
1522 depends on CPU_CAVIUM_OCTEON
1524 Using 32kB page size will result in higher performance kernel at
1525 the price of higher memory consumption. This option is available
1526 only on cnMIPS cores. Note that you will need a suitable Linux
1527 distribution to support this.
1529 config PAGE_SIZE_64KB
1531 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1533 Using 64kB page size will result in higher performance kernel at
1534 the price of higher memory consumption. This option is available on
1535 all non-R3000 family processor. Not that at the time of this
1536 writing this option is still high experimental.
1543 config IP22_CPU_SCACHE
1548 # Support for a MIPS32 / MIPS64 style S-caches
1550 config MIPS_CPU_SCACHE
1554 config R5000_CPU_SCACHE
1558 config RM7000_CPU_SCACHE
1562 config SIBYTE_DMA_PAGEOPS
1563 bool "Use DMA to clear/copy pages"
1566 Instead of using the CPU to zero and copy pages, use a Data Mover
1567 channel. These DMA channels are otherwise unused by the standard
1568 SiByte Linux port. Seems to give a small performance benefit.
1570 config CPU_HAS_PREFETCH
1574 prompt "MIPS MT options"
1576 config MIPS_MT_DISABLED
1577 bool "Disable multithreading support."
1579 Use this option if your workload can't take advantage of
1580 MIPS hardware multithreading support. On systems that don't have
1581 the option of an MT-enabled processor this option will be the only
1582 option in this menu.
1585 bool "Use 1 TC on each available VPE for SMP"
1586 depends on SYS_SUPPORTS_MULTITHREADING
1587 select CPU_MIPSR2_IRQ_VI
1588 select CPU_MIPSR2_IRQ_EI
1590 select NR_CPUS_DEFAULT_2
1592 select SYS_SUPPORTS_SCHED_SMT if SMP
1593 select SYS_SUPPORTS_SMP
1596 This is a kernel model which is also known a VSMP or lately
1597 has been marketesed into SMVP.
1600 bool "SMTC: Use all TCs on all VPEs for SMP"
1601 depends on CPU_MIPS32_R2
1602 #depends on CPU_MIPS64_R2 # once there is hardware ...
1603 depends on SYS_SUPPORTS_MULTITHREADING
1604 select CPU_MIPSR2_IRQ_VI
1605 select CPU_MIPSR2_IRQ_EI
1607 select NR_CPUS_DEFAULT_8
1609 select SYS_SUPPORTS_SMP
1612 This is a kernel model which is known a SMTC or lately has been
1613 marketesed into SMVP.
1621 bool "SMT (multithreading) scheduler support"
1622 depends on SYS_SUPPORTS_SCHED_SMT
1625 SMT scheduler support improves the CPU scheduler's decision making
1626 when dealing with MIPS MT enabled cores at a cost of slightly
1627 increased overhead in some places. If unsure say N here.
1629 config SYS_SUPPORTS_SCHED_SMT
1633 config SYS_SUPPORTS_MULTITHREADING
1636 config MIPS_MT_FPAFF
1637 bool "Dynamic FPU affinity for FP-intensive threads"
1639 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1641 config MIPS_VPE_LOADER
1642 bool "VPE loader support."
1643 depends on SYS_SUPPORTS_MULTITHREADING
1644 select CPU_MIPSR2_IRQ_VI
1645 select CPU_MIPSR2_IRQ_EI
1648 Includes a loader for loading an elf relocatable object
1649 onto another VPE and running it.
1651 config MIPS_MT_SMTC_IM_BACKSTOP
1652 bool "Use per-TC register bits as backstop for inhibited IM bits"
1653 depends on MIPS_MT_SMTC
1656 To support multiple TC microthreads acting as "CPUs" within
1657 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1658 during interrupt handling. To support legacy drivers and interrupt
1659 controller management code, SMTC has a "backstop" to track and
1660 if necessary restore the interrupt mask. This has some performance
1661 impact on interrupt service overhead.
1663 config MIPS_MT_SMTC_IRQAFF
1664 bool "Support IRQ affinity API"
1665 depends on MIPS_MT_SMTC
1668 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1669 for SMTC Linux kernel. Requires platform support, of which
1670 an example can be found in the MIPS kernel i8259 and Malta
1671 platform code. Adds some overhead to interrupt dispatch, and
1672 should be used only if you know what you are doing.
1674 config MIPS_VPE_LOADER_TOM
1675 bool "Load VPE program into memory hidden from linux"
1676 depends on MIPS_VPE_LOADER
1679 The loader can use memory that is present but has been hidden from
1680 Linux using the kernel command line option "mem=xxMB". It's up to
1681 you to ensure the amount you put in the option and the space your
1682 program requires is less or equal to the amount physically present.
1684 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1685 config MIPS_VPE_APSP_API
1686 bool "Enable support for AP/SP API (RTLX)"
1687 depends on MIPS_VPE_LOADER
1690 config MIPS_APSP_KSPD
1692 depends on MIPS_VPE_APSP_API
1695 KSPD is a kernel daemon that accepts syscall requests from the SP
1696 side, actions them and returns the results. It also handles the
1697 "exit" syscall notifying other kernel modules the SP program is
1698 exiting. You probably want to say yes here.
1701 bool "MIPS CMP framework support"
1702 depends on SYS_SUPPORTS_MIPS_CMP
1704 select SYS_SUPPORTS_SMP
1705 select SYS_SUPPORTS_SCHED_SMT if SMP
1706 select WEAK_ORDERING
1709 This is a placeholder option for the GCMP work. It will need to
1710 be handled differently...
1712 config SB1_PASS_1_WORKAROUNDS
1714 depends on CPU_SB1_PASS_1
1717 config SB1_PASS_2_WORKAROUNDS
1719 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1722 config SB1_PASS_2_1_WORKAROUNDS
1724 depends on CPU_SB1 && CPU_SB1_PASS_2
1727 config 64BIT_PHYS_ADDR
1730 config ARCH_PHYS_ADDR_T_64BIT
1731 def_bool 64BIT_PHYS_ADDR
1733 config CPU_HAS_SMARTMIPS
1734 depends on SYS_SUPPORTS_SMARTMIPS
1735 bool "Support for the SmartMIPS ASE"
1737 SmartMIPS is a extension of the MIPS32 architecture aimed at
1738 increased security at both hardware and software level for
1739 smartcards. Enabling this option will allow proper use of the
1740 SmartMIPS instructions by Linux applications. However a kernel with
1741 this option will not work on a MIPS core without SmartMIPS core. If
1742 you don't know you probably don't have SmartMIPS and should say N
1749 # Vectored interrupt mode is an R2 feature
1751 config CPU_MIPSR2_IRQ_VI
1755 # Extended interrupt mode is an R2 feature
1757 config CPU_MIPSR2_IRQ_EI
1762 depends on !CPU_R3000
1765 config GENERIC_CLOCKEVENTS_BROADCAST
1771 config CPU_DADDI_WORKAROUNDS
1774 config CPU_R4000_WORKAROUNDS
1776 select CPU_R4400_WORKAROUNDS
1778 config CPU_R4400_WORKAROUNDS
1782 # Use the generic interrupt handling code in kernel/irq/:
1784 config GENERIC_HARDIRQS
1788 config GENERIC_IRQ_PROBE
1796 # - Highmem only makes sense for the 32-bit kernel.
1797 # - The current highmem code will only work properly on physically indexed
1798 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1799 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1800 # moment we protect the user and offer the highmem option only on machines
1801 # where it's known to be safe. This will not offer highmem on a few systems
1802 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1803 # indexed CPUs but we're playing safe.
1804 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1805 # know they might have memory configurations that could make use of highmem
1809 bool "High Memory Support"
1810 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1812 config CPU_SUPPORTS_HIGHMEM
1815 config SYS_SUPPORTS_HIGHMEM
1818 config SYS_SUPPORTS_SMARTMIPS
1821 config ARCH_FLATMEM_ENABLE
1823 depends on !NUMA && !CPU_LOONGSON2
1825 config ARCH_DISCONTIGMEM_ENABLE
1827 default y if SGI_IP27
1829 Say Y to support efficient handling of discontiguous physical memory,
1830 for architectures which are either NUMA (Non-Uniform Memory Access)
1831 or have huge holes in the physical address space for other reasons.
1832 See <file:Documentation/vm/numa> for more.
1834 config ARCH_POPULATES_NODE_MAP
1837 config ARCH_SPARSEMEM_ENABLE
1839 select SPARSEMEM_STATIC
1843 depends on SYS_SUPPORTS_NUMA
1845 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1846 Access). This option improves performance on systems with more
1847 than two nodes; on two node systems it is generally better to
1848 leave it disabled; on single node systems disable this option
1851 config SYS_SUPPORTS_NUMA
1857 depends on NEED_MULTIPLE_NODES
1862 bool "Multi-Processing support"
1863 depends on SYS_SUPPORTS_SMP
1865 select USE_GENERIC_SMP_HELPERS
1867 This enables support for systems with more than one CPU. If you have
1868 a system with only one CPU, like most personal computers, say N. If
1869 you have a system with more than one CPU, say Y.
1871 If you say N here, the kernel will run on single and multiprocessor
1872 machines, but will use only one CPU of a multiprocessor machine. If
1873 you say Y here, the kernel will run on many, but not all,
1874 singleprocessor machines. On a singleprocessor machine, the kernel
1875 will run faster if you say N here.
1877 People using multiprocessor machines who say Y here should also say
1878 Y to "Enhanced Real Time Clock Support", below.
1880 See also the SMP-HOWTO available at
1881 <http://www.tldp.org/docs.html#howto>.
1883 If you don't know what to do here, say N.
1888 config SYS_SUPPORTS_MIPS_CMP
1891 config SYS_SUPPORTS_SMP
1894 config NR_CPUS_DEFAULT_1
1897 config NR_CPUS_DEFAULT_2
1900 config NR_CPUS_DEFAULT_4
1903 config NR_CPUS_DEFAULT_8
1906 config NR_CPUS_DEFAULT_16
1909 config NR_CPUS_DEFAULT_32
1912 config NR_CPUS_DEFAULT_64
1916 int "Maximum number of CPUs (2-64)"
1917 range 1 64 if NR_CPUS_DEFAULT_1
1919 default "1" if NR_CPUS_DEFAULT_1
1920 default "2" if NR_CPUS_DEFAULT_2
1921 default "4" if NR_CPUS_DEFAULT_4
1922 default "8" if NR_CPUS_DEFAULT_8
1923 default "16" if NR_CPUS_DEFAULT_16
1924 default "32" if NR_CPUS_DEFAULT_32
1925 default "64" if NR_CPUS_DEFAULT_64
1927 This allows you to specify the maximum number of CPUs which this
1928 kernel will support. The maximum supported value is 32 for 32-bit
1929 kernel and 64 for 64-bit kernels; the minimum value which makes
1930 sense is 1 for Qemu (useful only for kernel debugging purposes)
1931 and 2 for all others.
1933 This is purely to save memory - each supported CPU adds
1934 approximately eight kilobytes to the kernel image. For best
1935 performance should round up your number of processors to the next
1938 source "kernel/time/Kconfig"
1941 # Timer Interrupt Frequency Configuration
1945 prompt "Timer frequency"
1948 Allows the configuration of the timer frequency.
1951 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1954 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1957 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1960 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1963 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1966 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1969 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1973 config SYS_SUPPORTS_48HZ
1976 config SYS_SUPPORTS_100HZ
1979 config SYS_SUPPORTS_128HZ
1982 config SYS_SUPPORTS_250HZ
1985 config SYS_SUPPORTS_256HZ
1988 config SYS_SUPPORTS_1000HZ
1991 config SYS_SUPPORTS_1024HZ
1994 config SYS_SUPPORTS_ARBIT_HZ
1996 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1997 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1998 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1999 !SYS_SUPPORTS_1024HZ
2004 default 100 if HZ_100
2005 default 128 if HZ_128
2006 default 250 if HZ_250
2007 default 256 if HZ_256
2008 default 1000 if HZ_1000
2009 default 1024 if HZ_1024
2011 source "kernel/Kconfig.preempt"
2013 config MIPS_INSANE_LARGE
2014 bool "Support for large 64-bit configurations"
2015 depends on CPU_R10000 && 64BIT
2017 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2018 previous 64-bit processors which only supported 40 bit / 1TB. If you
2019 need processes of more than 1TB virtual address space, say Y here.
2020 This will result in additional memory usage, so it is not
2021 recommended for normal users.
2024 bool "Kexec system call (EXPERIMENTAL)"
2025 depends on EXPERIMENTAL
2027 kexec is a system call that implements the ability to shutdown your
2028 current kernel, and to start another kernel. It is like a reboot
2029 but it is independent of the system firmware. And like a reboot
2030 you can start any kernel with it, not just Linux.
2032 The name comes from the similarity to the exec system call.
2034 It is an ongoing process to be certain the hardware in a machine
2035 is properly shutdown, so do not be surprised if this code does not
2036 initially work for you. It may help to enable device hotplugging
2037 support. As of this writing the exact hardware interface is
2038 strongly in flux, so no good recommendation can be made.
2041 bool "Enable seccomp to safely compute untrusted bytecode"
2045 This kernel feature is useful for number crunching applications
2046 that may need to compute untrusted bytecode during their
2047 execution. By using pipes or other transports made available to
2048 the process as file descriptors supporting the read/write
2049 syscalls, it's possible to isolate those applications in
2050 their own address space using seccomp. Once seccomp is
2051 enabled via /proc/<pid>/seccomp, it cannot be disabled
2052 and the task is only allowed to execute a few safe syscalls
2053 defined by each seccomp mode.
2055 If unsure, say Y. Only embedded should say N here.
2059 config LOCKDEP_SUPPORT
2063 config STACKTRACE_SUPPORT
2067 source "init/Kconfig"
2069 source "kernel/Kconfig.freezer"
2071 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2079 bool "Support for PCI controller"
2080 depends on HW_HAS_PCI
2083 Find out whether you have a PCI motherboard. PCI is the name of a
2084 bus system, i.e. the way the CPU talks to the other stuff inside
2085 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2091 source "drivers/pci/Kconfig"
2094 # ISA support is now enabled via select. Too many systems still have the one
2095 # or other ISA chip on the board that users don't know about so don't expect
2096 # users to choose the right thing ...
2103 depends on HW_HAS_EISA
2105 select GENERIC_ISA_DMA
2107 The Extended Industry Standard Architecture (EISA) bus was
2108 developed as an open alternative to the IBM MicroChannel bus.
2110 The EISA bus provided some of the features of the IBM MicroChannel
2111 bus while maintaining backward compatibility with cards made for
2112 the older ISA bus. The EISA bus saw limited use between 1988 and
2113 1995 when it was made obsolete by the PCI bus.
2115 Say Y here if you are building a kernel for an EISA-based machine.
2119 source "drivers/eisa/Kconfig"
2122 bool "TURBOchannel support"
2123 depends on MACH_DECSTATION
2125 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2126 processors. Documentation on writing device drivers for TurboChannel
2128 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2131 # bool "Access.Bus support"
2140 select MIPS_EXTERNAL_TIMER
2145 source "drivers/pcmcia/Kconfig"
2147 source "drivers/pci/hotplug/Kconfig"
2151 menu "Executable file formats"
2153 source "fs/Kconfig.binfmt"
2158 config MIPS32_COMPAT
2159 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2162 Select this option if you want Linux/MIPS 32-bit binary
2163 compatibility. Since all software available for Linux/MIPS is
2164 currently 32-bit you should say Y here.
2168 depends on MIPS32_COMPAT
2171 config SYSVIPC_COMPAT
2173 depends on COMPAT && SYSVIPC
2177 bool "Kernel support for o32 binaries"
2178 depends on MIPS32_COMPAT
2180 Select this option if you want to run o32 binaries. These are pure
2181 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2182 existing binaries are in this format.
2187 bool "Kernel support for n32 binaries"
2188 depends on MIPS32_COMPAT
2190 Select this option if you want to run n32 binaries. These are
2191 64-bit binaries using 32-bit quantities for addressing and certain
2192 data that would normally be 64-bit. They are used in special
2199 default y if MIPS32_O32 || MIPS32_N32
2203 menu "Power management options"
2205 config ARCH_HIBERNATION_POSSIBLE
2207 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2209 config ARCH_SUSPEND_POSSIBLE
2211 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2213 source "kernel/power/Kconfig"
2217 source "arch/mips/kernel/cpufreq/Kconfig"
2219 source "net/Kconfig"
2221 source "drivers/Kconfig"
2225 source "arch/mips/Kconfig.debug"
2227 source "security/Kconfig"
2229 source "crypto/Kconfig"
2231 source "lib/Kconfig"