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
736 config GENERIC_CMOS_UPDATE
740 config SCHED_OMIT_FRAME_POINTER
744 config GENERIC_HARDIRQS_NO__DO_IRQ
748 # Select some configuration options automatically based on user selections.
753 config ARCH_MAY_HAVE_PC_FDC
802 select ARCH_REQUIRE_GPIOLIB
811 config DMA_NONCOHERENT
813 select NEED_DMA_MAP_STATE
815 config NEED_DMA_MAP_STATE
818 config SYS_HAS_EARLY_PRINTK
822 bool "Support for hot-pluggable CPUs"
823 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
825 Say Y here to allow turning CPUs off and on. CPUs can be
826 controlled through /sys/devices/system/cpu.
827 (Note: power management support will enable this option
828 automatically on SMP systems. )
829 Say N if you want to disable CPU hotplug.
831 config SYS_SUPPORTS_HOTPLUG_CPU
846 config MIPS_DISABLE_OBSOLETE_IDE
855 config GENERIC_ISA_DMA
857 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
859 config GENERIC_ISA_DMA_SUPPORT_BROKEN
861 select GENERIC_ISA_DMA
867 # Endianess selection. Sufficiently obscure so many users don't know what to
868 # answer,so we try hard to limit the available choices. Also the use of a
869 # choice statement should be more obvious to the user.
872 prompt "Endianess selection"
874 Some MIPS machines can be configured for either little or big endian
875 byte order. These modes require different kernels and a different
876 Linux distribution. In general there is one preferred byteorder for a
877 particular system but some systems are just as commonly used in the
878 one or the other endianness.
880 config CPU_BIG_ENDIAN
882 depends on SYS_SUPPORTS_BIG_ENDIAN
884 config CPU_LITTLE_ENDIAN
886 depends on SYS_SUPPORTS_LITTLE_ENDIAN
891 config SYS_SUPPORTS_APM_EMULATION
894 config SYS_SUPPORTS_BIG_ENDIAN
897 config SYS_SUPPORTS_LITTLE_ENDIAN
900 config SYS_SUPPORTS_HUGETLBFS
902 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
929 config IRQ_CPU_OCTEON
932 config MIPS_BOARDS_GEN
935 config PCI_GT64XXX_PCI0
938 config NO_EXCEPT_FILL
949 select DMA_NONCOHERENT
952 select SYS_HAS_CPU_R5500
953 select SYS_SUPPORTS_32BIT_KERNEL
954 select SYS_SUPPORTS_64BIT_KERNEL
955 select SYS_SUPPORTS_BIG_ENDIAN
962 select DMA_NONCOHERENT
963 select SYS_HAS_CPU_MIPS32_R2
964 select SYS_SUPPORTS_32BIT_KERNEL
965 select SYS_SUPPORTS_LITTLE_ENDIAN
966 select SYS_SUPPORTS_BIG_ENDIAN
968 select CPU_MIPSR2_IRQ_VI
980 select DMA_NONCOHERENT
982 select SYS_HAS_CPU_MIPS32_R1
983 select SYS_HAS_EARLY_PRINTK
984 select SYS_SUPPORTS_32BIT_KERNEL
993 config SGI_HAS_INDYDOG
1005 config SGI_HAS_ZILOG
1008 config SGI_HAS_I8042
1011 config DEFAULT_SGI_PARTITION
1023 config MIPS_L1_CACHE_SHIFT
1025 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1026 default "6" if MIPS_CPU_SCACHE
1027 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1030 config HAVE_STD_PC_SERIAL_PORT
1034 bool "ARC console support"
1035 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1039 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1044 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1053 menu "CPU selection"
1059 config CPU_LOONGSON2E
1061 depends on SYS_HAS_CPU_LOONGSON2E
1062 select CPU_LOONGSON2
1064 The Loongson 2E processor implements the MIPS III instruction set
1065 with many extensions.
1067 It has an internal FPGA northbridge, which is compatiable to
1070 config CPU_LOONGSON2F
1072 depends on SYS_HAS_CPU_LOONGSON2F
1073 select CPU_LOONGSON2
1075 select ARCH_REQUIRE_GPIOLIB
1077 The Loongson 2F processor implements the MIPS III instruction set
1078 with many extensions.
1080 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1081 have a similar programming interface with FPGA northbridge used in
1084 config CPU_MIPS32_R1
1085 bool "MIPS32 Release 1"
1086 depends on SYS_HAS_CPU_MIPS32_R1
1087 select CPU_HAS_PREFETCH
1088 select CPU_SUPPORTS_32BIT_KERNEL
1089 select CPU_SUPPORTS_HIGHMEM
1091 Choose this option to build a kernel for release 1 or later of the
1092 MIPS32 architecture. Most modern embedded systems with a 32-bit
1093 MIPS processor are based on a MIPS32 processor. If you know the
1094 specific type of processor in your system, choose those that one
1095 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1096 Release 2 of the MIPS32 architecture is available since several
1097 years so chances are you even have a MIPS32 Release 2 processor
1098 in which case you should choose CPU_MIPS32_R2 instead for better
1101 config CPU_MIPS32_R2
1102 bool "MIPS32 Release 2"
1103 depends on SYS_HAS_CPU_MIPS32_R2
1104 select CPU_HAS_PREFETCH
1105 select CPU_SUPPORTS_32BIT_KERNEL
1106 select CPU_SUPPORTS_HIGHMEM
1108 Choose this option to build a kernel for release 2 or later of the
1109 MIPS32 architecture. Most modern embedded systems with a 32-bit
1110 MIPS processor are based on a MIPS32 processor. If you know the
1111 specific type of processor in your system, choose those that one
1112 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1114 config CPU_MIPS64_R1
1115 bool "MIPS64 Release 1"
1116 depends on SYS_HAS_CPU_MIPS64_R1
1117 select CPU_HAS_PREFETCH
1118 select CPU_SUPPORTS_32BIT_KERNEL
1119 select CPU_SUPPORTS_64BIT_KERNEL
1120 select CPU_SUPPORTS_HIGHMEM
1121 select CPU_SUPPORTS_HUGEPAGES
1123 Choose this option to build a kernel for release 1 or later of the
1124 MIPS64 architecture. Many modern embedded systems with a 64-bit
1125 MIPS processor are based on a MIPS64 processor. If you know the
1126 specific type of processor in your system, choose those that one
1127 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1128 Release 2 of the MIPS64 architecture is available since several
1129 years so chances are you even have a MIPS64 Release 2 processor
1130 in which case you should choose CPU_MIPS64_R2 instead for better
1133 config CPU_MIPS64_R2
1134 bool "MIPS64 Release 2"
1135 depends on SYS_HAS_CPU_MIPS64_R2
1136 select CPU_HAS_PREFETCH
1137 select CPU_SUPPORTS_32BIT_KERNEL
1138 select CPU_SUPPORTS_64BIT_KERNEL
1139 select CPU_SUPPORTS_HIGHMEM
1140 select CPU_SUPPORTS_HUGEPAGES
1142 Choose this option to build a kernel for release 2 or later of the
1143 MIPS64 architecture. Many modern embedded systems with a 64-bit
1144 MIPS processor are based on a MIPS64 processor. If you know the
1145 specific type of processor in your system, choose those that one
1146 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1150 depends on SYS_HAS_CPU_R3000
1152 select CPU_SUPPORTS_32BIT_KERNEL
1153 select CPU_SUPPORTS_HIGHMEM
1155 Please make sure to pick the right CPU type. Linux/MIPS is not
1156 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1157 *not* work on R4000 machines and vice versa. However, since most
1158 of the supported machines have an R4000 (or similar) CPU, R4x00
1159 might be a safe bet. If the resulting kernel does not work,
1160 try to recompile with R3000.
1164 depends on SYS_HAS_CPU_TX39XX
1165 select CPU_SUPPORTS_32BIT_KERNEL
1169 depends on SYS_HAS_CPU_VR41XX
1170 select CPU_SUPPORTS_32BIT_KERNEL
1171 select CPU_SUPPORTS_64BIT_KERNEL
1173 The options selects support for the NEC VR4100 series of processors.
1174 Only choose this option if you have one of these processors as a
1175 kernel built with this option will not run on any other type of
1176 processor or vice versa.
1180 depends on SYS_HAS_CPU_R4300
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1184 MIPS Technologies R4300-series processors.
1188 depends on SYS_HAS_CPU_R4X00
1189 select CPU_SUPPORTS_32BIT_KERNEL
1190 select CPU_SUPPORTS_64BIT_KERNEL
1192 MIPS Technologies R4000-series processors other than 4300, including
1193 the R4000, R4400, R4600, and 4700.
1197 depends on SYS_HAS_CPU_TX49XX
1198 select CPU_HAS_PREFETCH
1199 select CPU_SUPPORTS_32BIT_KERNEL
1200 select CPU_SUPPORTS_64BIT_KERNEL
1204 depends on SYS_HAS_CPU_R5000
1205 select CPU_SUPPORTS_32BIT_KERNEL
1206 select CPU_SUPPORTS_64BIT_KERNEL
1208 MIPS Technologies R5000-series processors other than the Nevada.
1212 depends on SYS_HAS_CPU_R5432
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_64BIT_KERNEL
1218 depends on SYS_HAS_CPU_R5500
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1221 select CPU_SUPPORTS_HUGEPAGES
1223 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1228 depends on EXPERIMENTAL
1229 depends on SYS_HAS_CPU_R6000
1230 select CPU_SUPPORTS_32BIT_KERNEL
1232 MIPS Technologies R6000 and R6000A series processors. Note these
1233 processors are extremely rare and the support for them is incomplete.
1237 depends on SYS_HAS_CPU_NEVADA
1238 select CPU_SUPPORTS_32BIT_KERNEL
1239 select CPU_SUPPORTS_64BIT_KERNEL
1241 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1245 depends on EXPERIMENTAL
1246 depends on SYS_HAS_CPU_R8000
1247 select CPU_HAS_PREFETCH
1248 select CPU_SUPPORTS_64BIT_KERNEL
1250 MIPS Technologies R8000 processors. Note these processors are
1251 uncommon and the support for them is incomplete.
1255 depends on SYS_HAS_CPU_R10000
1256 select CPU_HAS_PREFETCH
1257 select CPU_SUPPORTS_32BIT_KERNEL
1258 select CPU_SUPPORTS_64BIT_KERNEL
1259 select CPU_SUPPORTS_HIGHMEM
1261 MIPS Technologies R10000-series processors.
1265 depends on SYS_HAS_CPU_RM7000
1266 select CPU_HAS_PREFETCH
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1269 select CPU_SUPPORTS_HIGHMEM
1273 depends on SYS_HAS_CPU_RM9000
1274 select CPU_HAS_PREFETCH
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1277 select CPU_SUPPORTS_HIGHMEM
1278 select WEAK_ORDERING
1282 depends on SYS_HAS_CPU_SB1
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select CPU_SUPPORTS_HIGHMEM
1286 select WEAK_ORDERING
1288 config CPU_CAVIUM_OCTEON
1289 bool "Cavium Octeon processor"
1290 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1292 select IRQ_CPU_OCTEON
1293 select CPU_HAS_PREFETCH
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select SYS_SUPPORTS_SMP
1296 select NR_CPUS_DEFAULT_16
1297 select WEAK_ORDERING
1298 select CPU_SUPPORTS_HIGHMEM
1299 select CPU_SUPPORTS_HUGEPAGES
1301 The Cavium Octeon processor is a highly integrated chip containing
1302 many ethernet hardware widgets for networking tasks. The processor
1303 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1304 Full details can be found at http://www.caviumnetworks.com.
1309 config CPU_NOP_WORKAROUNDS
1312 config CPU_JUMP_WORKAROUNDS
1315 config CPU_LOONGSON2F_WORKAROUNDS
1316 bool "Loongson 2F Workarounds"
1318 select CPU_NOP_WORKAROUNDS
1319 select CPU_JUMP_WORKAROUNDS
1321 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1322 require workarounds. Without workarounds the system may hang
1323 unexpectedly. For more information please refer to the gas
1324 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1326 Loongson 2F03 and later have fixed these issues and no workarounds
1327 are needed. The workarounds have no significant side effect on them
1328 but may decrease the performance of the system so this option should
1329 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1332 If unsure, please say Y.
1333 endif # CPU_LOONGSON2F
1335 config SYS_SUPPORTS_ZBOOT
1337 select HAVE_KERNEL_GZIP
1338 select HAVE_KERNEL_BZIP2
1339 select HAVE_KERNEL_LZMA
1340 select HAVE_KERNEL_LZO
1342 config SYS_SUPPORTS_ZBOOT_UART16550
1344 select SYS_SUPPORTS_ZBOOT
1346 config CPU_LOONGSON2
1348 select CPU_SUPPORTS_32BIT_KERNEL
1349 select CPU_SUPPORTS_64BIT_KERNEL
1350 select CPU_SUPPORTS_HIGHMEM
1352 config SYS_HAS_CPU_LOONGSON2E
1355 config SYS_HAS_CPU_LOONGSON2F
1357 select CPU_SUPPORTS_CPUFREQ
1358 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1359 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1361 config SYS_HAS_CPU_MIPS32_R1
1364 config SYS_HAS_CPU_MIPS32_R2
1367 config SYS_HAS_CPU_MIPS64_R1
1370 config SYS_HAS_CPU_MIPS64_R2
1373 config SYS_HAS_CPU_R3000
1376 config SYS_HAS_CPU_TX39XX
1379 config SYS_HAS_CPU_VR41XX
1382 config SYS_HAS_CPU_R4300
1385 config SYS_HAS_CPU_R4X00
1388 config SYS_HAS_CPU_TX49XX
1391 config SYS_HAS_CPU_R5000
1394 config SYS_HAS_CPU_R5432
1397 config SYS_HAS_CPU_R5500
1400 config SYS_HAS_CPU_R6000
1403 config SYS_HAS_CPU_NEVADA
1406 config SYS_HAS_CPU_R8000
1409 config SYS_HAS_CPU_R10000
1412 config SYS_HAS_CPU_RM7000
1415 config SYS_HAS_CPU_RM9000
1418 config SYS_HAS_CPU_SB1
1421 config SYS_HAS_CPU_CAVIUM_OCTEON
1425 # CPU may reorder R->R, R->W, W->R, W->W
1426 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1428 config WEAK_ORDERING
1432 # CPU may reorder reads and writes beyond LL/SC
1433 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1435 config WEAK_REORDERING_BEYOND_LLSC
1440 # These two indicate any level of the MIPS32 and MIPS64 architecture
1444 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1448 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1451 # These two indicate the revision of the architecture, either Release 1 or Release 2
1455 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1459 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1461 config SYS_SUPPORTS_32BIT_KERNEL
1463 config SYS_SUPPORTS_64BIT_KERNEL
1465 config CPU_SUPPORTS_32BIT_KERNEL
1467 config CPU_SUPPORTS_64BIT_KERNEL
1469 config CPU_SUPPORTS_CPUFREQ
1471 config CPU_SUPPORTS_ADDRWINCFG
1473 config CPU_SUPPORTS_HUGEPAGES
1475 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1477 config MIPS_PGD_C0_CONTEXT
1479 default y if 64BIT && CPU_MIPSR2
1482 # Set to y for ptrace access to watch registers.
1484 config HARDWARE_WATCHPOINTS
1486 default y if CPU_MIPSR1 || CPU_MIPSR2
1492 prompt "Kernel code model"
1494 You should only select this option if you have a workload that
1495 actually benefits from 64-bit processing or if your machine has
1496 large memory. You will only be presented a single option in this
1497 menu if your system does not support both 32-bit and 64-bit kernels.
1500 bool "32-bit kernel"
1501 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1504 Select this option if you want to build a 32-bit kernel.
1506 bool "64-bit kernel"
1507 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1508 select HAVE_SYSCALL_WRAPPERS
1510 Select this option if you want to build a 64-bit kernel.
1515 prompt "Kernel page size"
1516 default PAGE_SIZE_4KB
1518 config PAGE_SIZE_4KB
1520 depends on !CPU_LOONGSON2
1522 This option select the standard 4kB Linux page size. On some
1523 R3000-family processors this is the only available page size. Using
1524 4kB page size will minimize memory consumption and is therefore
1525 recommended for low memory systems.
1527 config PAGE_SIZE_8KB
1529 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1531 Using 8kB page size will result in higher performance kernel at
1532 the price of higher memory consumption. This option is available
1533 only on R8000 and cnMIPS processors. Note that you will need a
1534 suitable Linux distribution to support this.
1536 config PAGE_SIZE_16KB
1538 depends on !CPU_R3000 && !CPU_TX39XX
1540 Using 16kB page size will result in higher performance kernel at
1541 the price of higher memory consumption. This option is available on
1542 all non-R3000 family processors. Note that you will need a suitable
1543 Linux distribution to support this.
1545 config PAGE_SIZE_32KB
1547 depends on CPU_CAVIUM_OCTEON
1549 Using 32kB page size will result in higher performance kernel at
1550 the price of higher memory consumption. This option is available
1551 only on cnMIPS cores. Note that you will need a suitable Linux
1552 distribution to support this.
1554 config PAGE_SIZE_64KB
1556 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1558 Using 64kB page size will result in higher performance kernel at
1559 the price of higher memory consumption. This option is available on
1560 all non-R3000 family processor. Not that at the time of this
1561 writing this option is still high experimental.
1568 config IP22_CPU_SCACHE
1573 # Support for a MIPS32 / MIPS64 style S-caches
1575 config MIPS_CPU_SCACHE
1579 config R5000_CPU_SCACHE
1583 config RM7000_CPU_SCACHE
1587 config SIBYTE_DMA_PAGEOPS
1588 bool "Use DMA to clear/copy pages"
1591 Instead of using the CPU to zero and copy pages, use a Data Mover
1592 channel. These DMA channels are otherwise unused by the standard
1593 SiByte Linux port. Seems to give a small performance benefit.
1595 config CPU_HAS_PREFETCH
1599 prompt "MIPS MT options"
1601 config MIPS_MT_DISABLED
1602 bool "Disable multithreading support."
1604 Use this option if your workload can't take advantage of
1605 MIPS hardware multithreading support. On systems that don't have
1606 the option of an MT-enabled processor this option will be the only
1607 option in this menu.
1610 bool "Use 1 TC on each available VPE for SMP"
1611 depends on SYS_SUPPORTS_MULTITHREADING
1612 select CPU_MIPSR2_IRQ_VI
1613 select CPU_MIPSR2_IRQ_EI
1615 select NR_CPUS_DEFAULT_2
1617 select SYS_SUPPORTS_SCHED_SMT if SMP
1618 select SYS_SUPPORTS_SMP
1621 This is a kernel model which is also known a VSMP or lately
1622 has been marketesed into SMVP.
1625 bool "SMTC: Use all TCs on all VPEs for SMP"
1626 depends on CPU_MIPS32_R2
1627 #depends on CPU_MIPS64_R2 # once there is hardware ...
1628 depends on SYS_SUPPORTS_MULTITHREADING
1629 select CPU_MIPSR2_IRQ_VI
1630 select CPU_MIPSR2_IRQ_EI
1632 select NR_CPUS_DEFAULT_8
1634 select SYS_SUPPORTS_SMP
1637 This is a kernel model which is known a SMTC or lately has been
1638 marketesed into SMVP.
1646 bool "SMT (multithreading) scheduler support"
1647 depends on SYS_SUPPORTS_SCHED_SMT
1650 SMT scheduler support improves the CPU scheduler's decision making
1651 when dealing with MIPS MT enabled cores at a cost of slightly
1652 increased overhead in some places. If unsure say N here.
1654 config SYS_SUPPORTS_SCHED_SMT
1658 config SYS_SUPPORTS_MULTITHREADING
1661 config MIPS_MT_FPAFF
1662 bool "Dynamic FPU affinity for FP-intensive threads"
1664 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1666 config MIPS_VPE_LOADER
1667 bool "VPE loader support."
1668 depends on SYS_SUPPORTS_MULTITHREADING
1669 select CPU_MIPSR2_IRQ_VI
1670 select CPU_MIPSR2_IRQ_EI
1673 Includes a loader for loading an elf relocatable object
1674 onto another VPE and running it.
1676 config MIPS_MT_SMTC_IM_BACKSTOP
1677 bool "Use per-TC register bits as backstop for inhibited IM bits"
1678 depends on MIPS_MT_SMTC
1681 To support multiple TC microthreads acting as "CPUs" within
1682 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1683 during interrupt handling. To support legacy drivers and interrupt
1684 controller management code, SMTC has a "backstop" to track and
1685 if necessary restore the interrupt mask. This has some performance
1686 impact on interrupt service overhead.
1688 config MIPS_MT_SMTC_IRQAFF
1689 bool "Support IRQ affinity API"
1690 depends on MIPS_MT_SMTC
1693 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1694 for SMTC Linux kernel. Requires platform support, of which
1695 an example can be found in the MIPS kernel i8259 and Malta
1696 platform code. Adds some overhead to interrupt dispatch, and
1697 should be used only if you know what you are doing.
1699 config MIPS_VPE_LOADER_TOM
1700 bool "Load VPE program into memory hidden from linux"
1701 depends on MIPS_VPE_LOADER
1704 The loader can use memory that is present but has been hidden from
1705 Linux using the kernel command line option "mem=xxMB". It's up to
1706 you to ensure the amount you put in the option and the space your
1707 program requires is less or equal to the amount physically present.
1709 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1710 config MIPS_VPE_APSP_API
1711 bool "Enable support for AP/SP API (RTLX)"
1712 depends on MIPS_VPE_LOADER
1715 config MIPS_APSP_KSPD
1717 depends on MIPS_VPE_APSP_API
1720 KSPD is a kernel daemon that accepts syscall requests from the SP
1721 side, actions them and returns the results. It also handles the
1722 "exit" syscall notifying other kernel modules the SP program is
1723 exiting. You probably want to say yes here.
1726 bool "MIPS CMP framework support"
1727 depends on SYS_SUPPORTS_MIPS_CMP
1729 select SYS_SUPPORTS_SMP
1730 select SYS_SUPPORTS_SCHED_SMT if SMP
1731 select WEAK_ORDERING
1734 This is a placeholder option for the GCMP work. It will need to
1735 be handled differently...
1737 config SB1_PASS_1_WORKAROUNDS
1739 depends on CPU_SB1_PASS_1
1742 config SB1_PASS_2_WORKAROUNDS
1744 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1747 config SB1_PASS_2_1_WORKAROUNDS
1749 depends on CPU_SB1 && CPU_SB1_PASS_2
1752 config 64BIT_PHYS_ADDR
1755 config ARCH_PHYS_ADDR_T_64BIT
1756 def_bool 64BIT_PHYS_ADDR
1758 config CPU_HAS_SMARTMIPS
1759 depends on SYS_SUPPORTS_SMARTMIPS
1760 bool "Support for the SmartMIPS ASE"
1762 SmartMIPS is a extension of the MIPS32 architecture aimed at
1763 increased security at both hardware and software level for
1764 smartcards. Enabling this option will allow proper use of the
1765 SmartMIPS instructions by Linux applications. However a kernel with
1766 this option will not work on a MIPS core without SmartMIPS core. If
1767 you don't know you probably don't have SmartMIPS and should say N
1774 # Vectored interrupt mode is an R2 feature
1776 config CPU_MIPSR2_IRQ_VI
1780 # Extended interrupt mode is an R2 feature
1782 config CPU_MIPSR2_IRQ_EI
1787 depends on !CPU_R3000
1790 config GENERIC_CLOCKEVENTS_BROADCAST
1796 config CPU_DADDI_WORKAROUNDS
1799 config CPU_R4000_WORKAROUNDS
1801 select CPU_R4400_WORKAROUNDS
1803 config CPU_R4400_WORKAROUNDS
1807 # Use the generic interrupt handling code in kernel/irq/:
1809 config GENERIC_HARDIRQS
1813 config GENERIC_IRQ_PROBE
1821 # - Highmem only makes sense for the 32-bit kernel.
1822 # - The current highmem code will only work properly on physically indexed
1823 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1824 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1825 # moment we protect the user and offer the highmem option only on machines
1826 # where it's known to be safe. This will not offer highmem on a few systems
1827 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1828 # indexed CPUs but we're playing safe.
1829 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1830 # know they might have memory configurations that could make use of highmem
1834 bool "High Memory Support"
1835 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1837 config CPU_SUPPORTS_HIGHMEM
1840 config SYS_SUPPORTS_HIGHMEM
1843 config SYS_SUPPORTS_SMARTMIPS
1846 config ARCH_FLATMEM_ENABLE
1848 depends on !NUMA && !CPU_LOONGSON2
1850 config ARCH_DISCONTIGMEM_ENABLE
1852 default y if SGI_IP27
1854 Say Y to support efficient handling of discontiguous physical memory,
1855 for architectures which are either NUMA (Non-Uniform Memory Access)
1856 or have huge holes in the physical address space for other reasons.
1857 See <file:Documentation/vm/numa> for more.
1859 config ARCH_POPULATES_NODE_MAP
1862 config ARCH_SPARSEMEM_ENABLE
1864 select SPARSEMEM_STATIC
1868 depends on SYS_SUPPORTS_NUMA
1870 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1871 Access). This option improves performance on systems with more
1872 than two nodes; on two node systems it is generally better to
1873 leave it disabled; on single node systems disable this option
1876 config SYS_SUPPORTS_NUMA
1882 depends on NEED_MULTIPLE_NODES
1887 bool "Multi-Processing support"
1888 depends on SYS_SUPPORTS_SMP
1890 select USE_GENERIC_SMP_HELPERS
1892 This enables support for systems with more than one CPU. If you have
1893 a system with only one CPU, like most personal computers, say N. If
1894 you have a system with more than one CPU, say Y.
1896 If you say N here, the kernel will run on single and multiprocessor
1897 machines, but will use only one CPU of a multiprocessor machine. If
1898 you say Y here, the kernel will run on many, but not all,
1899 singleprocessor machines. On a singleprocessor machine, the kernel
1900 will run faster if you say N here.
1902 People using multiprocessor machines who say Y here should also say
1903 Y to "Enhanced Real Time Clock Support", below.
1905 See also the SMP-HOWTO available at
1906 <http://www.tldp.org/docs.html#howto>.
1908 If you don't know what to do here, say N.
1913 config SYS_SUPPORTS_MIPS_CMP
1916 config SYS_SUPPORTS_SMP
1919 config NR_CPUS_DEFAULT_1
1922 config NR_CPUS_DEFAULT_2
1925 config NR_CPUS_DEFAULT_4
1928 config NR_CPUS_DEFAULT_8
1931 config NR_CPUS_DEFAULT_16
1934 config NR_CPUS_DEFAULT_32
1937 config NR_CPUS_DEFAULT_64
1941 int "Maximum number of CPUs (2-64)"
1942 range 1 64 if NR_CPUS_DEFAULT_1
1944 default "1" if NR_CPUS_DEFAULT_1
1945 default "2" if NR_CPUS_DEFAULT_2
1946 default "4" if NR_CPUS_DEFAULT_4
1947 default "8" if NR_CPUS_DEFAULT_8
1948 default "16" if NR_CPUS_DEFAULT_16
1949 default "32" if NR_CPUS_DEFAULT_32
1950 default "64" if NR_CPUS_DEFAULT_64
1952 This allows you to specify the maximum number of CPUs which this
1953 kernel will support. The maximum supported value is 32 for 32-bit
1954 kernel and 64 for 64-bit kernels; the minimum value which makes
1955 sense is 1 for Qemu (useful only for kernel debugging purposes)
1956 and 2 for all others.
1958 This is purely to save memory - each supported CPU adds
1959 approximately eight kilobytes to the kernel image. For best
1960 performance should round up your number of processors to the next
1963 source "kernel/time/Kconfig"
1966 # Timer Interrupt Frequency Configuration
1970 prompt "Timer frequency"
1973 Allows the configuration of the timer frequency.
1976 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1979 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1982 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1985 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1988 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1991 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1994 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1998 config SYS_SUPPORTS_48HZ
2001 config SYS_SUPPORTS_100HZ
2004 config SYS_SUPPORTS_128HZ
2007 config SYS_SUPPORTS_250HZ
2010 config SYS_SUPPORTS_256HZ
2013 config SYS_SUPPORTS_1000HZ
2016 config SYS_SUPPORTS_1024HZ
2019 config SYS_SUPPORTS_ARBIT_HZ
2021 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2022 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2023 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2024 !SYS_SUPPORTS_1024HZ
2029 default 100 if HZ_100
2030 default 128 if HZ_128
2031 default 250 if HZ_250
2032 default 256 if HZ_256
2033 default 1000 if HZ_1000
2034 default 1024 if HZ_1024
2036 source "kernel/Kconfig.preempt"
2038 config MIPS_INSANE_LARGE
2039 bool "Support for large 64-bit configurations"
2040 depends on CPU_R10000 && 64BIT
2042 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2043 previous 64-bit processors which only supported 40 bit / 1TB. If you
2044 need processes of more than 1TB virtual address space, say Y here.
2045 This will result in additional memory usage, so it is not
2046 recommended for normal users.
2049 bool "Kexec system call (EXPERIMENTAL)"
2050 depends on EXPERIMENTAL
2052 kexec is a system call that implements the ability to shutdown your
2053 current kernel, and to start another kernel. It is like a reboot
2054 but it is independent of the system firmware. And like a reboot
2055 you can start any kernel with it, not just Linux.
2057 The name comes from the similarity to the exec system call.
2059 It is an ongoing process to be certain the hardware in a machine
2060 is properly shutdown, so do not be surprised if this code does not
2061 initially work for you. It may help to enable device hotplugging
2062 support. As of this writing the exact hardware interface is
2063 strongly in flux, so no good recommendation can be made.
2066 bool "Enable seccomp to safely compute untrusted bytecode"
2070 This kernel feature is useful for number crunching applications
2071 that may need to compute untrusted bytecode during their
2072 execution. By using pipes or other transports made available to
2073 the process as file descriptors supporting the read/write
2074 syscalls, it's possible to isolate those applications in
2075 their own address space using seccomp. Once seccomp is
2076 enabled via /proc/<pid>/seccomp, it cannot be disabled
2077 and the task is only allowed to execute a few safe syscalls
2078 defined by each seccomp mode.
2080 If unsure, say Y. Only embedded should say N here.
2084 config LOCKDEP_SUPPORT
2088 config STACKTRACE_SUPPORT
2092 source "init/Kconfig"
2094 source "kernel/Kconfig.freezer"
2096 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2104 bool "Support for PCI controller"
2105 depends on HW_HAS_PCI
2108 Find out whether you have a PCI motherboard. PCI is the name of a
2109 bus system, i.e. the way the CPU talks to the other stuff inside
2110 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2116 source "drivers/pci/Kconfig"
2119 # ISA support is now enabled via select. Too many systems still have the one
2120 # or other ISA chip on the board that users don't know about so don't expect
2121 # users to choose the right thing ...
2128 depends on HW_HAS_EISA
2130 select GENERIC_ISA_DMA
2132 The Extended Industry Standard Architecture (EISA) bus was
2133 developed as an open alternative to the IBM MicroChannel bus.
2135 The EISA bus provided some of the features of the IBM MicroChannel
2136 bus while maintaining backward compatibility with cards made for
2137 the older ISA bus. The EISA bus saw limited use between 1988 and
2138 1995 when it was made obsolete by the PCI bus.
2140 Say Y here if you are building a kernel for an EISA-based machine.
2144 source "drivers/eisa/Kconfig"
2147 bool "TURBOchannel support"
2148 depends on MACH_DECSTATION
2150 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2151 processors. Documentation on writing device drivers for TurboChannel
2153 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2156 # bool "Access.Bus support"
2165 select MIPS_EXTERNAL_TIMER
2170 source "drivers/pcmcia/Kconfig"
2172 source "drivers/pci/hotplug/Kconfig"
2176 menu "Executable file formats"
2178 source "fs/Kconfig.binfmt"
2183 config MIPS32_COMPAT
2184 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2187 Select this option if you want Linux/MIPS 32-bit binary
2188 compatibility. Since all software available for Linux/MIPS is
2189 currently 32-bit you should say Y here.
2193 depends on MIPS32_COMPAT
2196 config SYSVIPC_COMPAT
2198 depends on COMPAT && SYSVIPC
2202 bool "Kernel support for o32 binaries"
2203 depends on MIPS32_COMPAT
2205 Select this option if you want to run o32 binaries. These are pure
2206 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2207 existing binaries are in this format.
2212 bool "Kernel support for n32 binaries"
2213 depends on MIPS32_COMPAT
2215 Select this option if you want to run n32 binaries. These are
2216 64-bit binaries using 32-bit quantities for addressing and certain
2217 data that would normally be 64-bit. They are used in special
2224 default y if MIPS32_O32 || MIPS32_N32
2228 menu "Power management options"
2230 config ARCH_HIBERNATION_POSSIBLE
2232 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2234 config ARCH_SUSPEND_POSSIBLE
2236 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2238 source "kernel/power/Kconfig"
2242 source "arch/mips/kernel/cpufreq/Kconfig"
2244 source "net/Kconfig"
2246 source "drivers/Kconfig"
2250 source "arch/mips/Kconfig.debug"
2252 source "security/Kconfig"
2254 source "crypto/Kconfig"
2256 source "lib/Kconfig"