4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 # Horrible source of confusion. Die, die, die ...
11 select RTC_LIB if !MACH_LOONGSON
13 mainmenu "Linux/MIPS Kernel Configuration"
15 menu "Machine selection"
25 bool "Alchemy processor based machines"
26 select SYS_SUPPORTS_ZBOOT
29 bool "Texas Instruments AR7"
31 select DMA_NONCOHERENT
37 select SYS_HAS_CPU_MIPS32_R1
38 select SYS_HAS_EARLY_PRINTK
39 select SYS_SUPPORTS_32BIT_KERNEL
40 select SYS_SUPPORTS_LITTLE_ENDIAN
41 select SYS_SUPPORTS_ZBOOT_UART16550
46 Support for the Texas Instruments AR7 System-on-a-Chip
47 family: TNETD7100, 7200 and 7300.
50 bool "Basler eXcite smart camera"
59 select SYS_HAS_CPU_RM9000
60 select SYS_SUPPORTS_32BIT_KERNEL
61 select SYS_SUPPORTS_BIG_ENDIAN
63 The eXcite is a smart camera platform manufactured by
64 Basler Vision Technologies AG.
67 bool "BCM47XX based boards"
70 select DMA_NONCOHERENT
73 select SYS_HAS_CPU_MIPS32_R1
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_LITTLE_ENDIAN
77 select SSB_DRIVER_MIPS
78 select SSB_DRIVER_EXTIF
80 select SSB_PCICORE_HOSTMODE if PCI
82 select SYS_HAS_EARLY_PRINTK
85 Support for BCM47XX based boards
88 bool "Broadcom BCM63XX based boards"
91 select DMA_NONCOHERENT
93 select SYS_HAS_CPU_MIPS32_R1
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_BIG_ENDIAN
96 select SYS_HAS_EARLY_PRINTK
98 select ARCH_REQUIRE_GPIOLIB
100 Support for BCM63XX based boards
107 select DMA_NONCOHERENT
113 select PCI_GT64XXX_PCI0
115 select SYS_HAS_CPU_NEVADA
116 select SYS_HAS_EARLY_PRINTK
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_64BIT_KERNEL
119 select SYS_SUPPORTS_LITTLE_ENDIAN
121 config MACH_DECSTATION
128 select CPU_DADDI_WORKAROUNDS if 64BIT
129 select CPU_R4000_WORKAROUNDS if 64BIT
130 select CPU_R4400_WORKAROUNDS if 64BIT
131 select DMA_NONCOHERENT
134 select SYS_HAS_CPU_R3000
135 select SYS_HAS_CPU_R4X00
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
138 select SYS_SUPPORTS_LITTLE_ENDIAN
139 select SYS_SUPPORTS_128HZ
140 select SYS_SUPPORTS_256HZ
141 select SYS_SUPPORTS_1024HZ
143 This enables support for DEC's MIPS based workstations. For details
144 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
145 DECstation porting pages on <http://decstation.unix-ag.org/>.
147 If you have one of the following DECstation Models you definitely
148 want to choose R4xx0 for the CPU Type:
155 otherwise choose R3000.
158 bool "Jazz family of machines"
161 select ARCH_MAY_HAVE_PC_FDC
164 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
165 select GENERIC_ISA_DMA
170 select SYS_HAS_CPU_R4X00
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
173 select SYS_SUPPORTS_100HZ
175 This a family of machines based on the MIPS R4030 chipset which was
176 used by several vendors to build RISC/os and Windows NT workstations.
177 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
178 Olivetti M700-10 workstations.
181 bool "LASAT Networks platforms"
184 select DMA_NONCOHERENT
185 select SYS_HAS_EARLY_PRINTK
188 select PCI_GT64XXX_PCI0
190 select R5000_CPU_SCACHE
191 select SYS_HAS_CPU_R5000
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
194 select SYS_SUPPORTS_LITTLE_ENDIAN
197 bool "Loongson family of machines"
198 select SYS_SUPPORTS_ZBOOT_UART16550
200 This enables the support of Loongson family of machines.
202 Loongson is a family of general-purpose MIPS-compatible CPUs.
203 developed at Institute of Computing Technology (ICT),
204 Chinese Academy of Sciences (CAS) in the People's Republic
205 of China. The chief architect is Professor Weiwu Hu.
208 bool "MIPS Malta board"
209 select ARCH_MAY_HAVE_PC_FDC
214 select DMA_NONCOHERENT
215 select GENERIC_ISA_DMA
221 select MIPS_BOARDS_GEN
223 select MIPS_CPU_SCACHE
224 select PCI_GT64XXX_PCI0
227 select SYS_HAS_CPU_MIPS32_R1
228 select SYS_HAS_CPU_MIPS32_R2
229 select SYS_HAS_CPU_MIPS64_R1
230 select SYS_HAS_CPU_NEVADA
231 select SYS_HAS_CPU_RM7000
232 select SYS_HAS_EARLY_PRINTK
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_64BIT_KERNEL
235 select SYS_SUPPORTS_BIG_ENDIAN
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_MIPS_CMP
238 select SYS_SUPPORTS_MULTITHREADING
239 select SYS_SUPPORTS_SMARTMIPS
240 select SYS_SUPPORTS_ZBOOT
242 This enables support for the MIPS Technologies Malta evaluation
246 bool 'MIPS simulator (MIPSsim)'
249 select DMA_NONCOHERENT
250 select SYS_HAS_EARLY_PRINTK
253 select SYS_HAS_CPU_MIPS32_R1
254 select SYS_HAS_CPU_MIPS32_R2
255 select SYS_HAS_EARLY_PRINTK
256 select SYS_SUPPORTS_32BIT_KERNEL
257 select SYS_SUPPORTS_BIG_ENDIAN
258 select SYS_SUPPORTS_MULTITHREADING
259 select SYS_SUPPORTS_LITTLE_ENDIAN
261 This option enables support for MIPS Technologies MIPSsim software
265 bool "NEC EMMA2RH Mark-eins board"
269 This enables support for the NEC Electronics Mark-eins boards.
272 bool "NEC VR4100 series based machines"
275 select SYS_HAS_CPU_VR41XX
276 select ARCH_REQUIRE_GPIOLIB
279 bool "NXP STB220 board"
282 Support for NXP Semiconductors STB220 Development Board.
289 Support for NXP Semiconductors STB225 Development Board.
292 bool "NXP PNX8550 based JBS board"
294 select SYS_SUPPORTS_LITTLE_ENDIAN
296 config PNX8550_STB810
297 bool "NXP PNX8550 based STB810 board"
299 select SYS_SUPPORTS_LITTLE_ENDIAN
302 bool "PMC-Sierra MSP chipsets"
303 depends on EXPERIMENTAL
304 select DMA_NONCOHERENT
306 select NO_EXCEPT_FILL
308 select SYS_HAS_CPU_MIPS32_R1
309 select SYS_HAS_CPU_MIPS32_R2
310 select SYS_SUPPORTS_32BIT_KERNEL
311 select SYS_SUPPORTS_BIG_ENDIAN
314 select SERIAL_8250_CONSOLE
316 This adds support for the PMC-Sierra family of Multi-Service
317 Processor System-On-A-Chips. These parts include a number
318 of integrated peripherals, interfaces and DSPs in addition to
319 a variety of MIPS cores.
322 bool "PMC-Sierra Yosemite eval board"
331 select SYS_HAS_CPU_RM9000
332 select SYS_HAS_EARLY_PRINTK
333 select SYS_SUPPORTS_32BIT_KERNEL
334 select SYS_SUPPORTS_64BIT_KERNEL
335 select SYS_SUPPORTS_BIG_ENDIAN
336 select SYS_SUPPORTS_HIGHMEM
337 select SYS_SUPPORTS_SMP
339 Yosemite is an evaluation board for the RM9000x2 processor
340 manufactured by PMC-Sierra.
346 select CPU_MIPSR2_IRQ_VI
347 select CPU_MIPSR2_IRQ_EI
349 select DMA_NONCOHERENT
351 select SYS_HAS_EARLY_PRINTK
352 select SYS_HAS_CPU_MIPS32_R2
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_BIG_ENDIAN
355 select SYS_SUPPORTS_HIGHMEM
356 select USB_OHCI_LITTLE_ENDIAN
358 This enables support for the Cisco PowerTV Platform.
361 bool "SGI IP22 (Indy/Indigo2)"
367 select DEFAULT_SGI_PARTITION
368 select DMA_NONCOHERENT
372 select IP22_CPU_SCACHE
374 select GENERIC_ISA_DMA_SUPPORT_BROKEN
376 select SGI_HAS_INDYDOG
382 select SYS_HAS_CPU_R4X00
383 select SYS_HAS_CPU_R5000
385 # Disable EARLY_PRINTK for now since it leads to overwritten prom
386 # memory during early boot on some machines.
388 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
389 # for a more details discussion
391 # select SYS_HAS_EARLY_PRINTK
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_64BIT_KERNEL
394 select SYS_SUPPORTS_BIG_ENDIAN
396 This are the SGI Indy, Challenge S and Indigo2, as well as certain
397 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
398 that runs on these, say Y here.
401 bool "SGI IP27 (Origin200/2000)"
405 select DEFAULT_SGI_PARTITION
407 select SYS_HAS_EARLY_PRINTK
409 select NR_CPUS_DEFAULT_64
410 select SYS_HAS_CPU_R10000
411 select SYS_SUPPORTS_64BIT_KERNEL
412 select SYS_SUPPORTS_BIG_ENDIAN
413 select SYS_SUPPORTS_NUMA
414 select SYS_SUPPORTS_SMP
416 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
417 workstations. To compile a Linux kernel that runs on these, say Y
421 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
422 depends on EXPERIMENTAL
428 select DEFAULT_SGI_PARTITION
429 select DMA_NONCOHERENT
430 select GENERIC_ISA_DMA_SUPPORT_BROKEN
436 select SGI_HAS_INDYDOG
442 select SYS_HAS_CPU_R10000
444 # Disable EARLY_PRINTK for now since it leads to overwritten prom
445 # memory during early boot on some machines.
447 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
448 # for a more details discussion
450 # select SYS_HAS_EARLY_PRINTK
451 select SYS_SUPPORTS_64BIT_KERNEL
452 select SYS_SUPPORTS_BIG_ENDIAN
454 This is the SGI Indigo2 with R10000 processor. To compile a Linux
455 kernel that runs on these, say Y here.
464 select DMA_NONCOHERENT
467 select R5000_CPU_SCACHE
468 select RM7000_CPU_SCACHE
469 select SYS_HAS_CPU_R5000
470 select SYS_HAS_CPU_R10000 if BROKEN
471 select SYS_HAS_CPU_RM7000
472 select SYS_HAS_CPU_NEVADA
473 select SYS_SUPPORTS_64BIT_KERNEL
474 select SYS_SUPPORTS_BIG_ENDIAN
476 If you want this kernel to run on SGI O2 workstation, say Y here.
479 bool "Sibyte BCM91120C-CRhine"
480 depends on EXPERIMENTAL
483 select SIBYTE_BCM1120
485 select SYS_HAS_CPU_SB1
486 select SYS_SUPPORTS_BIG_ENDIAN
487 select SYS_SUPPORTS_LITTLE_ENDIAN
490 bool "Sibyte BCM91120x-Carmel"
491 depends on EXPERIMENTAL
494 select SIBYTE_BCM1120
496 select SYS_HAS_CPU_SB1
497 select SYS_SUPPORTS_BIG_ENDIAN
498 select SYS_SUPPORTS_LITTLE_ENDIAN
501 bool "Sibyte BCM91125C-CRhone"
502 depends on EXPERIMENTAL
505 select SIBYTE_BCM1125
507 select SYS_HAS_CPU_SB1
508 select SYS_SUPPORTS_BIG_ENDIAN
509 select SYS_SUPPORTS_HIGHMEM
510 select SYS_SUPPORTS_LITTLE_ENDIAN
513 bool "Sibyte BCM91125E-Rhone"
514 depends on EXPERIMENTAL
517 select SIBYTE_BCM1125H
519 select SYS_HAS_CPU_SB1
520 select SYS_SUPPORTS_BIG_ENDIAN
521 select SYS_SUPPORTS_LITTLE_ENDIAN
524 bool "Sibyte BCM91250A-SWARM"
527 select NR_CPUS_DEFAULT_2
530 select SYS_HAS_CPU_SB1
531 select SYS_SUPPORTS_BIG_ENDIAN
532 select SYS_SUPPORTS_HIGHMEM
533 select SYS_SUPPORTS_LITTLE_ENDIAN
534 select ZONE_DMA32 if 64BIT
536 config SIBYTE_LITTLESUR
537 bool "Sibyte BCM91250C2-LittleSur"
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_HIGHMEM
547 select SYS_SUPPORTS_LITTLE_ENDIAN
549 config SIBYTE_SENTOSA
550 bool "Sibyte BCM91250E-Sentosa"
551 depends on EXPERIMENTAL
554 select NR_CPUS_DEFAULT_2
557 select SYS_HAS_CPU_SB1
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_LITTLE_ENDIAN
562 bool "Sibyte BCM91480B-BigSur"
565 select NR_CPUS_DEFAULT_4
566 select SIBYTE_BCM1x80
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
572 select ZONE_DMA32 if 64BIT
575 bool "SNI RM200/300/400"
576 select ARC if CPU_LITTLE_ENDIAN
577 select ARC32 if CPU_LITTLE_ENDIAN
578 select SNIPROM if CPU_BIG_ENDIAN
579 select ARCH_MAY_HAVE_PC_FDC
583 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
584 select DMA_NONCOHERENT
585 select GENERIC_ISA_DMA
592 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
593 select SYS_HAS_CPU_R4X00
594 select SYS_HAS_CPU_R5000
595 select SYS_HAS_CPU_R10000
596 select R5000_CPU_SCACHE
597 select SYS_HAS_EARLY_PRINTK
598 select SYS_SUPPORTS_32BIT_KERNEL
599 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select SYS_SUPPORTS_HIGHMEM
602 select SYS_SUPPORTS_LITTLE_ENDIAN
604 The SNI RM200/300/400 are MIPS-based machines manufactured by
605 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
606 Technology and now in turn merged with Fujitsu. Say Y here to
607 support this machine type.
610 bool "Toshiba TX39 series based machines"
613 bool "Toshiba TX49 series based machines"
615 config MIKROTIK_RB532
616 bool "Mikrotik RB532 boards"
619 select DMA_NONCOHERENT
622 select SYS_HAS_CPU_MIPS32_R1
623 select SYS_SUPPORTS_32BIT_KERNEL
624 select SYS_SUPPORTS_LITTLE_ENDIAN
627 select ARCH_REQUIRE_GPIOLIB
629 Support the Mikrotik(tm) RouterBoard 532 series,
630 based on the IDT RC32434 SoC.
633 bool "Wind River PPMC board"
638 select DMA_NONCOHERENT
640 select PCI_GT64XXX_PCI0
642 select SYS_HAS_CPU_MIPS32_R1
643 select SYS_HAS_CPU_MIPS32_R2
644 select SYS_HAS_CPU_MIPS64_R1
645 select SYS_HAS_CPU_NEVADA
646 select SYS_HAS_CPU_RM7000
647 select SYS_SUPPORTS_32BIT_KERNEL
648 select SYS_SUPPORTS_64BIT_KERNEL
649 select SYS_SUPPORTS_BIG_ENDIAN
650 select SYS_SUPPORTS_LITTLE_ENDIAN
652 This enables support for the Wind River MIPS32 4KC PPMC evaluation
653 board, which is based on GT64120 bridge chip.
655 config CAVIUM_OCTEON_SIMULATOR
656 bool "Cavium Networks Octeon Simulator"
658 select 64BIT_PHYS_ADDR
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_HIGHMEM
663 select SYS_SUPPORTS_HOTPLUG_CPU
664 select SYS_HAS_CPU_CAVIUM_OCTEON
666 The Octeon simulator is software performance model of the Cavium
667 Octeon Processor. It supports simulating Octeon processors on x86
670 config CAVIUM_OCTEON_REFERENCE_BOARD
671 bool "Cavium Networks Octeon reference board"
673 select 64BIT_PHYS_ADDR
675 select SYS_SUPPORTS_64BIT_KERNEL
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_HIGHMEM
678 select SYS_SUPPORTS_HOTPLUG_CPU
679 select SYS_HAS_EARLY_PRINTK
680 select SYS_HAS_CPU_CAVIUM_OCTEON
683 select ARCH_SUPPORTS_MSI
685 This option supports all of the Octeon reference boards from Cavium
686 Networks. It builds a kernel that dynamically determines the Octeon
687 CPU type and supports all known board reference implementations.
688 Some of the supported boards are:
695 Say Y here for most Octeon reference boards.
699 source "arch/mips/alchemy/Kconfig"
700 source "arch/mips/basler/excite/Kconfig"
701 source "arch/mips/bcm63xx/Kconfig"
702 source "arch/mips/jazz/Kconfig"
703 source "arch/mips/lasat/Kconfig"
704 source "arch/mips/pmc-sierra/Kconfig"
705 source "arch/mips/powertv/Kconfig"
706 source "arch/mips/sgi-ip27/Kconfig"
707 source "arch/mips/sibyte/Kconfig"
708 source "arch/mips/txx9/Kconfig"
709 source "arch/mips/vr41xx/Kconfig"
710 source "arch/mips/cavium-octeon/Kconfig"
711 source "arch/mips/loongson/Kconfig"
715 config RWSEM_GENERIC_SPINLOCK
719 config RWSEM_XCHGADD_ALGORITHM
722 config ARCH_HAS_ILOG2_U32
726 config ARCH_HAS_ILOG2_U64
730 config ARCH_SUPPORTS_OPROFILE
732 default y if !MIPS_MT_SMTC
734 config GENERIC_FIND_NEXT_BIT
738 config GENERIC_HWEIGHT
742 config GENERIC_CALIBRATE_DELAY
746 config GENERIC_CLOCKEVENTS
754 config GENERIC_CMOS_UPDATE
758 config SCHED_OMIT_FRAME_POINTER
762 config GENERIC_HARDIRQS_NO__DO_IRQ
766 # Select some configuration options automatically based on user selections.
771 config ARCH_MAY_HAVE_PC_FDC
820 select ARCH_REQUIRE_GPIOLIB
829 config DMA_NONCOHERENT
831 select DMA_NEED_PCI_MAP_STATE
833 config DMA_NEED_PCI_MAP_STATE
837 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
838 depends on SYS_HAS_EARLY_PRINTK
841 This option enables special console drivers which allow the kernel
842 to print messages very early in the bootup process.
844 This is useful for kernel debugging when your machine crashes very
845 early before the console code is initialized. For normal operation,
846 it is not recommended because it looks ugly on some machines and
847 doesn't cooperate with an X server. You should normally say N here,
848 unless you want to debug such a crash.
850 config SYS_HAS_EARLY_PRINTK
854 bool "Support for hot-pluggable CPUs"
855 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
857 Say Y here to allow turning CPUs off and on. CPUs can be
858 controlled through /sys/devices/system/cpu.
859 (Note: power management support will enable this option
860 automatically on SMP systems. )
861 Say N if you want to disable CPU hotplug.
863 config SYS_SUPPORTS_HOTPLUG_CPU
878 config MIPS_DISABLE_OBSOLETE_IDE
887 config GENERIC_ISA_DMA
889 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
891 config GENERIC_ISA_DMA_SUPPORT_BROKEN
893 select GENERIC_ISA_DMA
899 # Endianess selection. Sufficiently obscure so many users don't know what to
900 # answer,so we try hard to limit the available choices. Also the use of a
901 # choice statement should be more obvious to the user.
904 prompt "Endianess selection"
906 Some MIPS machines can be configured for either little or big endian
907 byte order. These modes require different kernels and a different
908 Linux distribution. In general there is one preferred byteorder for a
909 particular system but some systems are just as commonly used in the
910 one or the other endianness.
912 config CPU_BIG_ENDIAN
914 depends on SYS_SUPPORTS_BIG_ENDIAN
916 config CPU_LITTLE_ENDIAN
918 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 The Loongson 2F processor implements the MIPS III instruction set
1108 with many extensions.
1110 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1111 have a similar programming interface with FPGA northbridge used in
1114 config CPU_MIPS32_R1
1115 bool "MIPS32 Release 1"
1116 depends on SYS_HAS_CPU_MIPS32_R1
1117 select CPU_HAS_PREFETCH
1118 select CPU_SUPPORTS_32BIT_KERNEL
1119 select CPU_SUPPORTS_HIGHMEM
1121 Choose this option to build a kernel for release 1 or later of the
1122 MIPS32 architecture. Most modern embedded systems with a 32-bit
1123 MIPS processor are based on a MIPS32 processor. If you know the
1124 specific type of processor in your system, choose those that one
1125 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1126 Release 2 of the MIPS32 architecture is available since several
1127 years so chances are you even have a MIPS32 Release 2 processor
1128 in which case you should choose CPU_MIPS32_R2 instead for better
1131 config CPU_MIPS32_R2
1132 bool "MIPS32 Release 2"
1133 depends on SYS_HAS_CPU_MIPS32_R2
1134 select CPU_HAS_PREFETCH
1135 select CPU_SUPPORTS_32BIT_KERNEL
1136 select CPU_SUPPORTS_HIGHMEM
1138 Choose this option to build a kernel for release 2 or later of the
1139 MIPS32 architecture. Most modern embedded systems with a 32-bit
1140 MIPS processor are based on a MIPS32 processor. If you know the
1141 specific type of processor in your system, choose those that one
1142 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1144 config CPU_MIPS64_R1
1145 bool "MIPS64 Release 1"
1146 depends on SYS_HAS_CPU_MIPS64_R1
1147 select CPU_HAS_PREFETCH
1148 select CPU_SUPPORTS_32BIT_KERNEL
1149 select CPU_SUPPORTS_64BIT_KERNEL
1150 select CPU_SUPPORTS_HIGHMEM
1151 select CPU_SUPPORTS_HUGEPAGES
1153 Choose this option to build a kernel for release 1 or later of the
1154 MIPS64 architecture. Many modern embedded systems with a 64-bit
1155 MIPS processor are based on a MIPS64 processor. If you know the
1156 specific type of processor in your system, choose those that one
1157 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1158 Release 2 of the MIPS64 architecture is available since several
1159 years so chances are you even have a MIPS64 Release 2 processor
1160 in which case you should choose CPU_MIPS64_R2 instead for better
1163 config CPU_MIPS64_R2
1164 bool "MIPS64 Release 2"
1165 depends on SYS_HAS_CPU_MIPS64_R2
1166 select CPU_HAS_PREFETCH
1167 select CPU_SUPPORTS_32BIT_KERNEL
1168 select CPU_SUPPORTS_64BIT_KERNEL
1169 select CPU_SUPPORTS_HIGHMEM
1170 select CPU_SUPPORTS_HUGEPAGES
1172 Choose this option to build a kernel for release 2 or later of the
1173 MIPS64 architecture. Many modern embedded systems with a 64-bit
1174 MIPS processor are based on a MIPS64 processor. If you know the
1175 specific type of processor in your system, choose those that one
1176 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1180 depends on SYS_HAS_CPU_R3000
1182 select CPU_SUPPORTS_32BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1185 Please make sure to pick the right CPU type. Linux/MIPS is not
1186 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1187 *not* work on R4000 machines and vice versa. However, since most
1188 of the supported machines have an R4000 (or similar) CPU, R4x00
1189 might be a safe bet. If the resulting kernel does not work,
1190 try to recompile with R3000.
1194 depends on SYS_HAS_CPU_TX39XX
1195 select CPU_SUPPORTS_32BIT_KERNEL
1199 depends on SYS_HAS_CPU_VR41XX
1200 select CPU_SUPPORTS_32BIT_KERNEL
1201 select CPU_SUPPORTS_64BIT_KERNEL
1203 The options selects support for the NEC VR4100 series of processors.
1204 Only choose this option if you have one of these processors as a
1205 kernel built with this option will not run on any other type of
1206 processor or vice versa.
1210 depends on SYS_HAS_CPU_R4300
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_64BIT_KERNEL
1214 MIPS Technologies R4300-series processors.
1218 depends on SYS_HAS_CPU_R4X00
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1222 MIPS Technologies R4000-series processors other than 4300, including
1223 the R4000, R4400, R4600, and 4700.
1227 depends on SYS_HAS_CPU_TX49XX
1228 select CPU_HAS_PREFETCH
1229 select CPU_SUPPORTS_32BIT_KERNEL
1230 select CPU_SUPPORTS_64BIT_KERNEL
1234 depends on SYS_HAS_CPU_R5000
1235 select CPU_SUPPORTS_32BIT_KERNEL
1236 select CPU_SUPPORTS_64BIT_KERNEL
1238 MIPS Technologies R5000-series processors other than the Nevada.
1242 depends on SYS_HAS_CPU_R5432
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_64BIT_KERNEL
1248 depends on SYS_HAS_CPU_R5500
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1251 select CPU_SUPPORTS_HUGEPAGES
1253 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1258 depends on EXPERIMENTAL
1259 depends on SYS_HAS_CPU_R6000
1260 select CPU_SUPPORTS_32BIT_KERNEL
1262 MIPS Technologies R6000 and R6000A series processors. Note these
1263 processors are extremely rare and the support for them is incomplete.
1267 depends on SYS_HAS_CPU_NEVADA
1268 select CPU_SUPPORTS_32BIT_KERNEL
1269 select CPU_SUPPORTS_64BIT_KERNEL
1271 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1275 depends on EXPERIMENTAL
1276 depends on SYS_HAS_CPU_R8000
1277 select CPU_HAS_PREFETCH
1278 select CPU_SUPPORTS_64BIT_KERNEL
1280 MIPS Technologies R8000 processors. Note these processors are
1281 uncommon and the support for them is incomplete.
1285 depends on SYS_HAS_CPU_R10000
1286 select CPU_HAS_PREFETCH
1287 select CPU_SUPPORTS_32BIT_KERNEL
1288 select CPU_SUPPORTS_64BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1291 MIPS Technologies R10000-series processors.
1295 depends on SYS_HAS_CPU_RM7000
1296 select CPU_HAS_PREFETCH
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1299 select CPU_SUPPORTS_HIGHMEM
1303 depends on SYS_HAS_CPU_RM9000
1304 select CPU_HAS_PREFETCH
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_64BIT_KERNEL
1307 select CPU_SUPPORTS_HIGHMEM
1308 select WEAK_ORDERING
1312 depends on SYS_HAS_CPU_SB1
1313 select CPU_SUPPORTS_32BIT_KERNEL
1314 select CPU_SUPPORTS_64BIT_KERNEL
1315 select CPU_SUPPORTS_HIGHMEM
1316 select WEAK_ORDERING
1318 config CPU_CAVIUM_OCTEON
1319 bool "Cavium Octeon processor"
1320 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1322 select IRQ_CPU_OCTEON
1323 select CPU_HAS_PREFETCH
1324 select CPU_SUPPORTS_64BIT_KERNEL
1325 select SYS_SUPPORTS_SMP
1326 select NR_CPUS_DEFAULT_16
1327 select WEAK_ORDERING
1328 select WEAK_REORDERING_BEYOND_LLSC
1329 select CPU_SUPPORTS_HIGHMEM
1330 select CPU_SUPPORTS_HUGEPAGES
1332 The Cavium Octeon processor is a highly integrated chip containing
1333 many ethernet hardware widgets for networking tasks. The processor
1334 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1335 Full details can be found at http://www.caviumnetworks.com.
1339 config SYS_SUPPORTS_ZBOOT
1341 select HAVE_KERNEL_GZIP
1342 select HAVE_KERNEL_BZIP2
1343 select HAVE_KERNEL_LZMA
1345 config SYS_SUPPORTS_ZBOOT_UART16550
1347 select SYS_SUPPORTS_ZBOOT
1349 config CPU_LOONGSON2
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HIGHMEM
1355 config SYS_HAS_CPU_LOONGSON2E
1358 config SYS_HAS_CPU_LOONGSON2F
1360 select CPU_SUPPORTS_CPUFREQ
1361 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1362 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1364 config SYS_HAS_CPU_MIPS32_R1
1367 config SYS_HAS_CPU_MIPS32_R2
1370 config SYS_HAS_CPU_MIPS64_R1
1373 config SYS_HAS_CPU_MIPS64_R2
1376 config SYS_HAS_CPU_R3000
1379 config SYS_HAS_CPU_TX39XX
1382 config SYS_HAS_CPU_VR41XX
1385 config SYS_HAS_CPU_R4300
1388 config SYS_HAS_CPU_R4X00
1391 config SYS_HAS_CPU_TX49XX
1394 config SYS_HAS_CPU_R5000
1397 config SYS_HAS_CPU_R5432
1400 config SYS_HAS_CPU_R5500
1403 config SYS_HAS_CPU_R6000
1406 config SYS_HAS_CPU_NEVADA
1409 config SYS_HAS_CPU_R8000
1412 config SYS_HAS_CPU_R10000
1415 config SYS_HAS_CPU_RM7000
1418 config SYS_HAS_CPU_RM9000
1421 config SYS_HAS_CPU_SB1
1424 config SYS_HAS_CPU_CAVIUM_OCTEON
1428 # CPU may reorder R->R, R->W, W->R, W->W
1429 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1431 config WEAK_ORDERING
1435 # CPU may reorder reads and writes beyond LL/SC
1436 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1438 config WEAK_REORDERING_BEYOND_LLSC
1443 # These two indicate any level of the MIPS32 and MIPS64 architecture
1447 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1451 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1454 # These two indicate the revision of the architecture, either Release 1 or Release 2
1458 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1462 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1464 config SYS_SUPPORTS_32BIT_KERNEL
1466 config SYS_SUPPORTS_64BIT_KERNEL
1468 config CPU_SUPPORTS_32BIT_KERNEL
1470 config CPU_SUPPORTS_64BIT_KERNEL
1472 config CPU_SUPPORTS_CPUFREQ
1474 config CPU_SUPPORTS_ADDRWINCFG
1476 config CPU_SUPPORTS_HUGEPAGES
1478 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1480 config MIPS_PGD_C0_CONTEXT
1482 default y if 64BIT && CPU_MIPSR2
1485 # Set to y for ptrace access to watch registers.
1487 config HARDWARE_WATCHPOINTS
1489 default y if CPU_MIPSR1 || CPU_MIPSR2
1495 prompt "Kernel code model"
1497 You should only select this option if you have a workload that
1498 actually benefits from 64-bit processing or if your machine has
1499 large memory. You will only be presented a single option in this
1500 menu if your system does not support both 32-bit and 64-bit kernels.
1503 bool "32-bit kernel"
1504 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1507 Select this option if you want to build a 32-bit kernel.
1509 bool "64-bit kernel"
1510 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1511 select HAVE_SYSCALL_WRAPPERS
1513 Select this option if you want to build a 64-bit kernel.
1518 prompt "Kernel page size"
1519 default PAGE_SIZE_4KB
1521 config PAGE_SIZE_4KB
1523 depends on !CPU_LOONGSON2
1525 This option select the standard 4kB Linux page size. On some
1526 R3000-family processors this is the only available page size. Using
1527 4kB page size will minimize memory consumption and is therefore
1528 recommended for low memory systems.
1530 config PAGE_SIZE_8KB
1532 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1534 Using 8kB page size will result in higher performance kernel at
1535 the price of higher memory consumption. This option is available
1536 only on R8000 and cnMIPS processors. Note that you will need a
1537 suitable Linux distribution to support this.
1539 config PAGE_SIZE_16KB
1541 depends on !CPU_R3000 && !CPU_TX39XX
1543 Using 16kB page size will result in higher performance kernel at
1544 the price of higher memory consumption. This option is available on
1545 all non-R3000 family processors. Note that you will need a suitable
1546 Linux distribution to support this.
1548 config PAGE_SIZE_32KB
1550 depends on CPU_CAVIUM_OCTEON
1552 Using 32kB page size will result in higher performance kernel at
1553 the price of higher memory consumption. This option is available
1554 only on cnMIPS cores. Note that you will need a suitable Linux
1555 distribution to support this.
1557 config PAGE_SIZE_64KB
1559 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1561 Using 64kB page size will result in higher performance kernel at
1562 the price of higher memory consumption. This option is available on
1563 all non-R3000 family processor. Not that at the time of this
1564 writing this option is still high experimental.
1571 config IP22_CPU_SCACHE
1576 # Support for a MIPS32 / MIPS64 style S-caches
1578 config MIPS_CPU_SCACHE
1582 config R5000_CPU_SCACHE
1586 config RM7000_CPU_SCACHE
1590 config SIBYTE_DMA_PAGEOPS
1591 bool "Use DMA to clear/copy pages"
1594 Instead of using the CPU to zero and copy pages, use a Data Mover
1595 channel. These DMA channels are otherwise unused by the standard
1596 SiByte Linux port. Seems to give a small performance benefit.
1598 config CPU_HAS_PREFETCH
1602 prompt "MIPS MT options"
1604 config MIPS_MT_DISABLED
1605 bool "Disable multithreading support."
1607 Use this option if your workload can't take advantage of
1608 MIPS hardware multithreading support. On systems that don't have
1609 the option of an MT-enabled processor this option will be the only
1610 option in this menu.
1613 bool "Use 1 TC on each available VPE for SMP"
1614 depends on SYS_SUPPORTS_MULTITHREADING
1615 select CPU_MIPSR2_IRQ_VI
1616 select CPU_MIPSR2_IRQ_EI
1618 select NR_CPUS_DEFAULT_2
1620 select SYS_SUPPORTS_SCHED_SMT if SMP
1621 select SYS_SUPPORTS_SMP
1624 This is a kernel model which is also known a VSMP or lately
1625 has been marketesed into SMVP.
1628 bool "SMTC: Use all TCs on all VPEs for SMP"
1629 depends on CPU_MIPS32_R2
1630 #depends on CPU_MIPS64_R2 # once there is hardware ...
1631 depends on SYS_SUPPORTS_MULTITHREADING
1632 select CPU_MIPSR2_IRQ_VI
1633 select CPU_MIPSR2_IRQ_EI
1635 select NR_CPUS_DEFAULT_8
1637 select SYS_SUPPORTS_SMP
1640 This is a kernel model which is known a SMTC or lately has been
1641 marketesed into SMVP.
1649 bool "SMT (multithreading) scheduler support"
1650 depends on SYS_SUPPORTS_SCHED_SMT
1653 SMT scheduler support improves the CPU scheduler's decision making
1654 when dealing with MIPS MT enabled cores at a cost of slightly
1655 increased overhead in some places. If unsure say N here.
1657 config SYS_SUPPORTS_SCHED_SMT
1661 config SYS_SUPPORTS_MULTITHREADING
1664 config MIPS_MT_FPAFF
1665 bool "Dynamic FPU affinity for FP-intensive threads"
1667 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1669 config MIPS_VPE_LOADER
1670 bool "VPE loader support."
1671 depends on SYS_SUPPORTS_MULTITHREADING
1672 select CPU_MIPSR2_IRQ_VI
1673 select CPU_MIPSR2_IRQ_EI
1676 Includes a loader for loading an elf relocatable object
1677 onto another VPE and running it.
1679 config MIPS_MT_SMTC_IM_BACKSTOP
1680 bool "Use per-TC register bits as backstop for inhibited IM bits"
1681 depends on MIPS_MT_SMTC
1684 To support multiple TC microthreads acting as "CPUs" within
1685 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1686 during interrupt handling. To support legacy drivers and interrupt
1687 controller management code, SMTC has a "backstop" to track and
1688 if necessary restore the interrupt mask. This has some performance
1689 impact on interrupt service overhead.
1691 config MIPS_MT_SMTC_IRQAFF
1692 bool "Support IRQ affinity API"
1693 depends on MIPS_MT_SMTC
1696 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1697 for SMTC Linux kernel. Requires platform support, of which
1698 an example can be found in the MIPS kernel i8259 and Malta
1699 platform code. Adds some overhead to interrupt dispatch, and
1700 should be used only if you know what you are doing.
1702 config MIPS_VPE_LOADER_TOM
1703 bool "Load VPE program into memory hidden from linux"
1704 depends on MIPS_VPE_LOADER
1707 The loader can use memory that is present but has been hidden from
1708 Linux using the kernel command line option "mem=xxMB". It's up to
1709 you to ensure the amount you put in the option and the space your
1710 program requires is less or equal to the amount physically present.
1712 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1713 config MIPS_VPE_APSP_API
1714 bool "Enable support for AP/SP API (RTLX)"
1715 depends on MIPS_VPE_LOADER
1718 config MIPS_APSP_KSPD
1720 depends on MIPS_VPE_APSP_API
1723 KSPD is a kernel daemon that accepts syscall requests from the SP
1724 side, actions them and returns the results. It also handles the
1725 "exit" syscall notifying other kernel modules the SP program is
1726 exiting. You probably want to say yes here.
1729 bool "MIPS CMP framework support"
1730 depends on SYS_SUPPORTS_MIPS_CMP
1732 select SYS_SUPPORTS_SMP
1733 select SYS_SUPPORTS_SCHED_SMT if SMP
1734 select WEAK_ORDERING
1737 This is a placeholder option for the GCMP work. It will need to
1738 be handled differently...
1740 config SB1_PASS_1_WORKAROUNDS
1742 depends on CPU_SB1_PASS_1
1745 config SB1_PASS_2_WORKAROUNDS
1747 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1750 config SB1_PASS_2_1_WORKAROUNDS
1752 depends on CPU_SB1 && CPU_SB1_PASS_2
1755 config 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"