4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
10 # Horrible source of confusion. Die, die, die ...
12 select RTC_LIB if !MACH_LOONGSON
14 mainmenu "Linux/MIPS Kernel Configuration"
16 menu "Machine selection"
26 bool "Alchemy processor based machines"
27 select SYS_SUPPORTS_ZBOOT
30 bool "Texas Instruments AR7"
32 select DMA_NONCOHERENT
38 select SYS_HAS_CPU_MIPS32_R1
39 select SYS_HAS_EARLY_PRINTK
40 select SYS_SUPPORTS_32BIT_KERNEL
41 select SYS_SUPPORTS_LITTLE_ENDIAN
42 select SYS_SUPPORTS_ZBOOT_UART16550
47 Support for the Texas Instruments AR7 System-on-a-Chip
48 family: TNETD7100, 7200 and 7300.
51 bool "Basler eXcite smart camera"
60 select SYS_HAS_CPU_RM9000
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_BIG_ENDIAN
64 The eXcite is a smart camera platform manufactured by
65 Basler Vision Technologies AG.
68 bool "BCM47XX based boards"
71 select DMA_NONCOHERENT
74 select SYS_HAS_CPU_MIPS32_R1
75 select SYS_SUPPORTS_32BIT_KERNEL
76 select SYS_SUPPORTS_LITTLE_ENDIAN
78 select SSB_DRIVER_MIPS
79 select SSB_DRIVER_EXTIF
81 select SSB_PCICORE_HOSTMODE if PCI
83 select SYS_HAS_EARLY_PRINTK
86 Support for BCM47XX based boards
89 bool "Broadcom BCM63XX based boards"
92 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_BIG_ENDIAN
97 select SYS_HAS_EARLY_PRINTK
99 select ARCH_REQUIRE_GPIOLIB
101 Support for BCM63XX based boards
108 select DMA_NONCOHERENT
114 select PCI_GT64XXX_PCI0
116 select SYS_HAS_CPU_NEVADA
117 select SYS_HAS_EARLY_PRINTK
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
122 config MACH_DECSTATION
129 select CPU_DADDI_WORKAROUNDS if 64BIT
130 select CPU_R4000_WORKAROUNDS if 64BIT
131 select CPU_R4400_WORKAROUNDS if 64BIT
132 select DMA_NONCOHERENT
135 select SYS_HAS_CPU_R3000
136 select SYS_HAS_CPU_R4X00
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
139 select SYS_SUPPORTS_LITTLE_ENDIAN
140 select SYS_SUPPORTS_128HZ
141 select SYS_SUPPORTS_256HZ
142 select SYS_SUPPORTS_1024HZ
144 This enables support for DEC's MIPS based workstations. For details
145 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
146 DECstation porting pages on <http://decstation.unix-ag.org/>.
148 If you have one of the following DECstation Models you definitely
149 want to choose R4xx0 for the CPU Type:
156 otherwise choose R3000.
159 bool "Jazz family of machines"
162 select ARCH_MAY_HAVE_PC_FDC
165 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
166 select GENERIC_ISA_DMA
171 select SYS_HAS_CPU_R4X00
172 select SYS_SUPPORTS_32BIT_KERNEL
173 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
174 select SYS_SUPPORTS_100HZ
176 This a family of machines based on the MIPS R4030 chipset which was
177 used by several vendors to build RISC/os and Windows NT workstations.
178 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
179 Olivetti M700-10 workstations.
182 bool "LASAT Networks platforms"
185 select DMA_NONCOHERENT
186 select SYS_HAS_EARLY_PRINTK
189 select PCI_GT64XXX_PCI0
191 select R5000_CPU_SCACHE
192 select SYS_HAS_CPU_R5000
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
195 select SYS_SUPPORTS_LITTLE_ENDIAN
198 bool "Loongson family of machines"
199 select SYS_SUPPORTS_ZBOOT_UART16550
201 This enables the support of Loongson family of machines.
203 Loongson is a family of general-purpose MIPS-compatible CPUs.
204 developed at Institute of Computing Technology (ICT),
205 Chinese Academy of Sciences (CAS) in the People's Republic
206 of China. The chief architect is Professor Weiwu Hu.
209 bool "MIPS Malta board"
210 select ARCH_MAY_HAVE_PC_FDC
215 select DMA_NONCOHERENT
216 select GENERIC_ISA_DMA
222 select MIPS_BOARDS_GEN
224 select MIPS_CPU_SCACHE
225 select PCI_GT64XXX_PCI0
228 select SYS_HAS_CPU_MIPS32_R1
229 select SYS_HAS_CPU_MIPS32_R2
230 select SYS_HAS_CPU_MIPS64_R1
231 select SYS_HAS_CPU_NEVADA
232 select SYS_HAS_CPU_RM7000
233 select SYS_HAS_EARLY_PRINTK
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_64BIT_KERNEL
236 select SYS_SUPPORTS_BIG_ENDIAN
237 select SYS_SUPPORTS_LITTLE_ENDIAN
238 select SYS_SUPPORTS_MIPS_CMP
239 select SYS_SUPPORTS_MULTITHREADING
240 select SYS_SUPPORTS_SMARTMIPS
241 select SYS_SUPPORTS_ZBOOT
243 This enables support for the MIPS Technologies Malta evaluation
247 bool 'MIPS simulator (MIPSsim)'
250 select DMA_NONCOHERENT
251 select SYS_HAS_EARLY_PRINTK
254 select SYS_HAS_CPU_MIPS32_R1
255 select SYS_HAS_CPU_MIPS32_R2
256 select SYS_HAS_EARLY_PRINTK
257 select SYS_SUPPORTS_32BIT_KERNEL
258 select SYS_SUPPORTS_BIG_ENDIAN
259 select SYS_SUPPORTS_MULTITHREADING
260 select SYS_SUPPORTS_LITTLE_ENDIAN
262 This option enables support for MIPS Technologies MIPSsim software
266 bool "NEC EMMA2RH Mark-eins board"
270 This enables support for the NEC Electronics Mark-eins boards.
273 bool "NEC VR4100 series based machines"
276 select SYS_HAS_CPU_VR41XX
277 select ARCH_REQUIRE_GPIOLIB
280 bool "NXP STB220 board"
283 Support for NXP Semiconductors STB220 Development Board.
290 Support for NXP Semiconductors STB225 Development Board.
293 bool "NXP PNX8550 based JBS board"
295 select SYS_SUPPORTS_LITTLE_ENDIAN
297 config PNX8550_STB810
298 bool "NXP PNX8550 based STB810 board"
300 select SYS_SUPPORTS_LITTLE_ENDIAN
303 bool "PMC-Sierra MSP chipsets"
304 depends on EXPERIMENTAL
305 select DMA_NONCOHERENT
307 select NO_EXCEPT_FILL
309 select SYS_HAS_CPU_MIPS32_R1
310 select SYS_HAS_CPU_MIPS32_R2
311 select SYS_SUPPORTS_32BIT_KERNEL
312 select SYS_SUPPORTS_BIG_ENDIAN
315 select SERIAL_8250_CONSOLE
317 This adds support for the PMC-Sierra family of Multi-Service
318 Processor System-On-A-Chips. These parts include a number
319 of integrated peripherals, interfaces and DSPs in addition to
320 a variety of MIPS cores.
323 bool "PMC-Sierra Yosemite eval board"
332 select SYS_HAS_CPU_RM9000
333 select SYS_HAS_EARLY_PRINTK
334 select SYS_SUPPORTS_32BIT_KERNEL
335 select SYS_SUPPORTS_64BIT_KERNEL
336 select SYS_SUPPORTS_BIG_ENDIAN
337 select SYS_SUPPORTS_HIGHMEM
338 select SYS_SUPPORTS_SMP
340 Yosemite is an evaluation board for the RM9000x2 processor
341 manufactured by PMC-Sierra.
347 select CPU_MIPSR2_IRQ_VI
348 select CPU_MIPSR2_IRQ_EI
350 select DMA_NONCOHERENT
352 select SYS_HAS_EARLY_PRINTK
353 select SYS_HAS_CPU_MIPS32_R2
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_BIG_ENDIAN
356 select SYS_SUPPORTS_HIGHMEM
357 select USB_OHCI_LITTLE_ENDIAN
359 This enables support for the Cisco PowerTV Platform.
362 bool "SGI IP22 (Indy/Indigo2)"
368 select DEFAULT_SGI_PARTITION
369 select DMA_NONCOHERENT
373 select IP22_CPU_SCACHE
375 select GENERIC_ISA_DMA_SUPPORT_BROKEN
377 select SGI_HAS_INDYDOG
383 select SYS_HAS_CPU_R4X00
384 select SYS_HAS_CPU_R5000
386 # Disable EARLY_PRINTK for now since it leads to overwritten prom
387 # memory during early boot on some machines.
389 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
390 # for a more details discussion
392 # select SYS_HAS_EARLY_PRINTK
393 select SYS_SUPPORTS_32BIT_KERNEL
394 select SYS_SUPPORTS_64BIT_KERNEL
395 select SYS_SUPPORTS_BIG_ENDIAN
397 This are the SGI Indy, Challenge S and Indigo2, as well as certain
398 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
399 that runs on these, say Y here.
402 bool "SGI IP27 (Origin200/2000)"
406 select DEFAULT_SGI_PARTITION
408 select SYS_HAS_EARLY_PRINTK
410 select NR_CPUS_DEFAULT_64
411 select SYS_HAS_CPU_R10000
412 select SYS_SUPPORTS_64BIT_KERNEL
413 select SYS_SUPPORTS_BIG_ENDIAN
414 select SYS_SUPPORTS_NUMA
415 select SYS_SUPPORTS_SMP
417 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
418 workstations. To compile a Linux kernel that runs on these, say Y
422 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
423 depends on EXPERIMENTAL
429 select DEFAULT_SGI_PARTITION
430 select DMA_NONCOHERENT
431 select GENERIC_ISA_DMA_SUPPORT_BROKEN
437 select SGI_HAS_INDYDOG
443 select SYS_HAS_CPU_R10000
445 # Disable EARLY_PRINTK for now since it leads to overwritten prom
446 # memory during early boot on some machines.
448 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
449 # for a more details discussion
451 # select SYS_HAS_EARLY_PRINTK
452 select SYS_SUPPORTS_64BIT_KERNEL
453 select SYS_SUPPORTS_BIG_ENDIAN
455 This is the SGI Indigo2 with R10000 processor. To compile a Linux
456 kernel that runs on these, say Y here.
465 select DMA_NONCOHERENT
468 select R5000_CPU_SCACHE
469 select RM7000_CPU_SCACHE
470 select SYS_HAS_CPU_R5000
471 select SYS_HAS_CPU_R10000 if BROKEN
472 select SYS_HAS_CPU_RM7000
473 select SYS_HAS_CPU_NEVADA
474 select SYS_SUPPORTS_64BIT_KERNEL
475 select SYS_SUPPORTS_BIG_ENDIAN
477 If you want this kernel to run on SGI O2 workstation, say Y here.
480 bool "Sibyte BCM91120C-CRhine"
481 depends on EXPERIMENTAL
484 select SIBYTE_BCM1120
486 select SYS_HAS_CPU_SB1
487 select SYS_SUPPORTS_BIG_ENDIAN
488 select SYS_SUPPORTS_LITTLE_ENDIAN
491 bool "Sibyte BCM91120x-Carmel"
492 depends on EXPERIMENTAL
495 select SIBYTE_BCM1120
497 select SYS_HAS_CPU_SB1
498 select SYS_SUPPORTS_BIG_ENDIAN
499 select SYS_SUPPORTS_LITTLE_ENDIAN
502 bool "Sibyte BCM91125C-CRhone"
503 depends on EXPERIMENTAL
506 select SIBYTE_BCM1125
508 select SYS_HAS_CPU_SB1
509 select SYS_SUPPORTS_BIG_ENDIAN
510 select SYS_SUPPORTS_HIGHMEM
511 select SYS_SUPPORTS_LITTLE_ENDIAN
514 bool "Sibyte BCM91125E-Rhone"
515 depends on EXPERIMENTAL
518 select SIBYTE_BCM1125H
520 select SYS_HAS_CPU_SB1
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_LITTLE_ENDIAN
525 bool "Sibyte BCM91250A-SWARM"
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
535 select ZONE_DMA32 if 64BIT
537 config SIBYTE_LITTLESUR
538 bool "Sibyte BCM91250C2-LittleSur"
539 depends on EXPERIMENTAL
542 select NR_CPUS_DEFAULT_2
545 select SYS_HAS_CPU_SB1
546 select SYS_SUPPORTS_BIG_ENDIAN
547 select SYS_SUPPORTS_HIGHMEM
548 select SYS_SUPPORTS_LITTLE_ENDIAN
550 config SIBYTE_SENTOSA
551 bool "Sibyte BCM91250E-Sentosa"
552 depends on EXPERIMENTAL
555 select NR_CPUS_DEFAULT_2
558 select SYS_HAS_CPU_SB1
559 select SYS_SUPPORTS_BIG_ENDIAN
560 select SYS_SUPPORTS_LITTLE_ENDIAN
563 bool "Sibyte BCM91480B-BigSur"
566 select NR_CPUS_DEFAULT_4
567 select SIBYTE_BCM1x80
569 select SYS_HAS_CPU_SB1
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_HIGHMEM
572 select SYS_SUPPORTS_LITTLE_ENDIAN
573 select ZONE_DMA32 if 64BIT
576 bool "SNI RM200/300/400"
577 select ARC if CPU_LITTLE_ENDIAN
578 select ARC32 if CPU_LITTLE_ENDIAN
579 select SNIPROM if CPU_BIG_ENDIAN
580 select ARCH_MAY_HAVE_PC_FDC
584 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
585 select DMA_NONCOHERENT
586 select GENERIC_ISA_DMA
593 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
594 select SYS_HAS_CPU_R4X00
595 select SYS_HAS_CPU_R5000
596 select SYS_HAS_CPU_R10000
597 select R5000_CPU_SCACHE
598 select SYS_HAS_EARLY_PRINTK
599 select SYS_SUPPORTS_32BIT_KERNEL
600 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_HIGHMEM
603 select SYS_SUPPORTS_LITTLE_ENDIAN
605 The SNI RM200/300/400 are MIPS-based machines manufactured by
606 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
607 Technology and now in turn merged with Fujitsu. Say Y here to
608 support this machine type.
611 bool "Toshiba TX39 series based machines"
614 bool "Toshiba TX49 series based machines"
616 config MIKROTIK_RB532
617 bool "Mikrotik RB532 boards"
620 select DMA_NONCOHERENT
623 select SYS_HAS_CPU_MIPS32_R1
624 select SYS_SUPPORTS_32BIT_KERNEL
625 select SYS_SUPPORTS_LITTLE_ENDIAN
628 select ARCH_REQUIRE_GPIOLIB
630 Support the Mikrotik(tm) RouterBoard 532 series,
631 based on the IDT RC32434 SoC.
634 bool "Wind River PPMC board"
639 select DMA_NONCOHERENT
641 select PCI_GT64XXX_PCI0
643 select SYS_HAS_CPU_MIPS32_R1
644 select SYS_HAS_CPU_MIPS32_R2
645 select SYS_HAS_CPU_MIPS64_R1
646 select SYS_HAS_CPU_NEVADA
647 select SYS_HAS_CPU_RM7000
648 select SYS_SUPPORTS_32BIT_KERNEL
649 select SYS_SUPPORTS_64BIT_KERNEL
650 select SYS_SUPPORTS_BIG_ENDIAN
651 select SYS_SUPPORTS_LITTLE_ENDIAN
653 This enables support for the Wind River MIPS32 4KC PPMC evaluation
654 board, which is based on GT64120 bridge chip.
656 config CAVIUM_OCTEON_SIMULATOR
657 bool "Cavium Networks Octeon Simulator"
659 select 64BIT_PHYS_ADDR
661 select SYS_SUPPORTS_64BIT_KERNEL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select SYS_SUPPORTS_HIGHMEM
664 select SYS_SUPPORTS_HOTPLUG_CPU
665 select SYS_HAS_CPU_CAVIUM_OCTEON
667 The Octeon simulator is software performance model of the Cavium
668 Octeon Processor. It supports simulating Octeon processors on x86
671 config CAVIUM_OCTEON_REFERENCE_BOARD
672 bool "Cavium Networks Octeon reference board"
674 select 64BIT_PHYS_ADDR
676 select SYS_SUPPORTS_64BIT_KERNEL
677 select SYS_SUPPORTS_BIG_ENDIAN
678 select SYS_SUPPORTS_HIGHMEM
679 select SYS_SUPPORTS_HOTPLUG_CPU
680 select SYS_HAS_EARLY_PRINTK
681 select SYS_HAS_CPU_CAVIUM_OCTEON
684 select ARCH_SUPPORTS_MSI
686 This option supports all of the Octeon reference boards from Cavium
687 Networks. It builds a kernel that dynamically determines the Octeon
688 CPU type and supports all known board reference implementations.
689 Some of the supported boards are:
696 Say Y here for most Octeon reference boards.
700 source "arch/mips/alchemy/Kconfig"
701 source "arch/mips/basler/excite/Kconfig"
702 source "arch/mips/bcm63xx/Kconfig"
703 source "arch/mips/jazz/Kconfig"
704 source "arch/mips/lasat/Kconfig"
705 source "arch/mips/pmc-sierra/Kconfig"
706 source "arch/mips/powertv/Kconfig"
707 source "arch/mips/sgi-ip27/Kconfig"
708 source "arch/mips/sibyte/Kconfig"
709 source "arch/mips/txx9/Kconfig"
710 source "arch/mips/vr41xx/Kconfig"
711 source "arch/mips/cavium-octeon/Kconfig"
712 source "arch/mips/loongson/Kconfig"
716 config RWSEM_GENERIC_SPINLOCK
720 config RWSEM_XCHGADD_ALGORITHM
723 config ARCH_HAS_ILOG2_U32
727 config ARCH_HAS_ILOG2_U64
731 config ARCH_SUPPORTS_OPROFILE
733 default y if !MIPS_MT_SMTC
735 config GENERIC_FIND_NEXT_BIT
739 config GENERIC_HWEIGHT
743 config GENERIC_CALIBRATE_DELAY
747 config GENERIC_CLOCKEVENTS
755 config GENERIC_CMOS_UPDATE
759 config SCHED_OMIT_FRAME_POINTER
763 config GENERIC_HARDIRQS_NO__DO_IRQ
767 # Select some configuration options automatically based on user selections.
772 config ARCH_MAY_HAVE_PC_FDC
821 select ARCH_REQUIRE_GPIOLIB
830 config DMA_NONCOHERENT
832 select DMA_NEED_PCI_MAP_STATE
834 config DMA_NEED_PCI_MAP_STATE
838 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
839 depends on SYS_HAS_EARLY_PRINTK
842 This option enables special console drivers which allow the kernel
843 to print messages very early in the bootup process.
845 This is useful for kernel debugging when your machine crashes very
846 early before the console code is initialized. For normal operation,
847 it is not recommended because it looks ugly on some machines and
848 doesn't cooperate with an X server. You should normally say N here,
849 unless you want to debug such a crash.
851 config SYS_HAS_EARLY_PRINTK
855 bool "Support for hot-pluggable CPUs"
856 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
858 Say Y here to allow turning CPUs off and on. CPUs can be
859 controlled through /sys/devices/system/cpu.
860 (Note: power management support will enable this option
861 automatically on SMP systems. )
862 Say N if you want to disable CPU hotplug.
864 config SYS_SUPPORTS_HOTPLUG_CPU
879 config MIPS_DISABLE_OBSOLETE_IDE
888 config GENERIC_ISA_DMA
890 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
892 config GENERIC_ISA_DMA_SUPPORT_BROKEN
894 select GENERIC_ISA_DMA
900 # Endianess selection. Sufficiently obscure so many users don't know what to
901 # answer,so we try hard to limit the available choices. Also the use of a
902 # choice statement should be more obvious to the user.
905 prompt "Endianess selection"
907 Some MIPS machines can be configured for either little or big endian
908 byte order. These modes require different kernels and a different
909 Linux distribution. In general there is one preferred byteorder for a
910 particular system but some systems are just as commonly used in the
911 one or the other endianness.
913 config CPU_BIG_ENDIAN
915 depends on SYS_SUPPORTS_BIG_ENDIAN
917 config CPU_LITTLE_ENDIAN
919 depends on SYS_SUPPORTS_LITTLE_ENDIAN
924 config SYS_SUPPORTS_APM_EMULATION
927 config SYS_SUPPORTS_BIG_ENDIAN
930 config SYS_SUPPORTS_LITTLE_ENDIAN
933 config SYS_SUPPORTS_HUGETLBFS
935 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
962 config IRQ_CPU_OCTEON
965 config MIPS_BOARDS_GEN
968 config PCI_GT64XXX_PCI0
971 config NO_EXCEPT_FILL
982 select DMA_NONCOHERENT
985 select SYS_HAS_CPU_R5500
986 select SYS_SUPPORTS_32BIT_KERNEL
987 select SYS_SUPPORTS_64BIT_KERNEL
988 select SYS_SUPPORTS_BIG_ENDIAN
995 select DMA_NONCOHERENT
996 select SYS_HAS_CPU_MIPS32_R2
997 select SYS_SUPPORTS_32BIT_KERNEL
998 select SYS_SUPPORTS_LITTLE_ENDIAN
999 select SYS_SUPPORTS_BIG_ENDIAN
1001 select CPU_MIPSR2_IRQ_VI
1013 select DMA_NONCOHERENT
1015 select SYS_HAS_CPU_MIPS32_R1
1016 select SYS_HAS_EARLY_PRINTK
1017 select SYS_SUPPORTS_32BIT_KERNEL
1020 config SWAP_IO_SPACE
1023 config SERIAL_RM9000
1026 config SGI_HAS_INDYDOG
1038 config SGI_HAS_ZILOG
1041 config SGI_HAS_I8042
1044 config DEFAULT_SGI_PARTITION
1056 config MIPS_L1_CACHE_SHIFT
1058 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1059 default "6" if MIPS_CPU_SCACHE
1060 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1063 config HAVE_STD_PC_SERIAL_PORT
1067 bool "ARC console support"
1068 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1072 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1077 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1086 menu "CPU selection"
1092 config CPU_LOONGSON2E
1094 depends on SYS_HAS_CPU_LOONGSON2E
1095 select CPU_LOONGSON2
1097 The Loongson 2E processor implements the MIPS III instruction set
1098 with many extensions.
1100 It has an internal FPGA northbridge, which is compatiable to
1103 config CPU_LOONGSON2F
1105 depends on SYS_HAS_CPU_LOONGSON2F
1106 select CPU_LOONGSON2
1108 The Loongson 2F processor implements the MIPS III instruction set
1109 with many extensions.
1111 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1112 have a similar programming interface with FPGA northbridge used in
1115 config CPU_MIPS32_R1
1116 bool "MIPS32 Release 1"
1117 depends on SYS_HAS_CPU_MIPS32_R1
1118 select CPU_HAS_PREFETCH
1119 select CPU_SUPPORTS_32BIT_KERNEL
1120 select CPU_SUPPORTS_HIGHMEM
1122 Choose this option to build a kernel for release 1 or later of the
1123 MIPS32 architecture. Most modern embedded systems with a 32-bit
1124 MIPS processor are based on a MIPS32 processor. If you know the
1125 specific type of processor in your system, choose those that one
1126 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1127 Release 2 of the MIPS32 architecture is available since several
1128 years so chances are you even have a MIPS32 Release 2 processor
1129 in which case you should choose CPU_MIPS32_R2 instead for better
1132 config CPU_MIPS32_R2
1133 bool "MIPS32 Release 2"
1134 depends on SYS_HAS_CPU_MIPS32_R2
1135 select CPU_HAS_PREFETCH
1136 select CPU_SUPPORTS_32BIT_KERNEL
1137 select CPU_SUPPORTS_HIGHMEM
1139 Choose this option to build a kernel for release 2 or later of the
1140 MIPS32 architecture. Most modern embedded systems with a 32-bit
1141 MIPS processor are based on a MIPS32 processor. If you know the
1142 specific type of processor in your system, choose those that one
1143 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1145 config CPU_MIPS64_R1
1146 bool "MIPS64 Release 1"
1147 depends on SYS_HAS_CPU_MIPS64_R1
1148 select CPU_HAS_PREFETCH
1149 select CPU_SUPPORTS_32BIT_KERNEL
1150 select CPU_SUPPORTS_64BIT_KERNEL
1151 select CPU_SUPPORTS_HIGHMEM
1152 select CPU_SUPPORTS_HUGEPAGES
1154 Choose this option to build a kernel for release 1 or later of the
1155 MIPS64 architecture. Many modern embedded systems with a 64-bit
1156 MIPS processor are based on a MIPS64 processor. If you know the
1157 specific type of processor in your system, choose those that one
1158 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1159 Release 2 of the MIPS64 architecture is available since several
1160 years so chances are you even have a MIPS64 Release 2 processor
1161 in which case you should choose CPU_MIPS64_R2 instead for better
1164 config CPU_MIPS64_R2
1165 bool "MIPS64 Release 2"
1166 depends on SYS_HAS_CPU_MIPS64_R2
1167 select CPU_HAS_PREFETCH
1168 select CPU_SUPPORTS_32BIT_KERNEL
1169 select CPU_SUPPORTS_64BIT_KERNEL
1170 select CPU_SUPPORTS_HIGHMEM
1171 select CPU_SUPPORTS_HUGEPAGES
1173 Choose this option to build a kernel for release 2 or later of the
1174 MIPS64 architecture. Many modern embedded systems with a 64-bit
1175 MIPS processor are based on a MIPS64 processor. If you know the
1176 specific type of processor in your system, choose those that one
1177 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1181 depends on SYS_HAS_CPU_R3000
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_HIGHMEM
1186 Please make sure to pick the right CPU type. Linux/MIPS is not
1187 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1188 *not* work on R4000 machines and vice versa. However, since most
1189 of the supported machines have an R4000 (or similar) CPU, R4x00
1190 might be a safe bet. If the resulting kernel does not work,
1191 try to recompile with R3000.
1195 depends on SYS_HAS_CPU_TX39XX
1196 select CPU_SUPPORTS_32BIT_KERNEL
1200 depends on SYS_HAS_CPU_VR41XX
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1204 The options selects support for the NEC VR4100 series of processors.
1205 Only choose this option if you have one of these processors as a
1206 kernel built with this option will not run on any other type of
1207 processor or vice versa.
1211 depends on SYS_HAS_CPU_R4300
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1215 MIPS Technologies R4300-series processors.
1219 depends on SYS_HAS_CPU_R4X00
1220 select CPU_SUPPORTS_32BIT_KERNEL
1221 select CPU_SUPPORTS_64BIT_KERNEL
1223 MIPS Technologies R4000-series processors other than 4300, including
1224 the R4000, R4400, R4600, and 4700.
1228 depends on SYS_HAS_CPU_TX49XX
1229 select CPU_HAS_PREFETCH
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1235 depends on SYS_HAS_CPU_R5000
1236 select CPU_SUPPORTS_32BIT_KERNEL
1237 select CPU_SUPPORTS_64BIT_KERNEL
1239 MIPS Technologies R5000-series processors other than the Nevada.
1243 depends on SYS_HAS_CPU_R5432
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1249 depends on SYS_HAS_CPU_R5500
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_64BIT_KERNEL
1252 select CPU_SUPPORTS_HUGEPAGES
1254 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1259 depends on EXPERIMENTAL
1260 depends on SYS_HAS_CPU_R6000
1261 select CPU_SUPPORTS_32BIT_KERNEL
1263 MIPS Technologies R6000 and R6000A series processors. Note these
1264 processors are extremely rare and the support for them is incomplete.
1268 depends on SYS_HAS_CPU_NEVADA
1269 select CPU_SUPPORTS_32BIT_KERNEL
1270 select CPU_SUPPORTS_64BIT_KERNEL
1272 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1276 depends on EXPERIMENTAL
1277 depends on SYS_HAS_CPU_R8000
1278 select CPU_HAS_PREFETCH
1279 select CPU_SUPPORTS_64BIT_KERNEL
1281 MIPS Technologies R8000 processors. Note these processors are
1282 uncommon and the support for them is incomplete.
1286 depends on SYS_HAS_CPU_R10000
1287 select CPU_HAS_PREFETCH
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_64BIT_KERNEL
1290 select CPU_SUPPORTS_HIGHMEM
1292 MIPS Technologies R10000-series processors.
1296 depends on SYS_HAS_CPU_RM7000
1297 select CPU_HAS_PREFETCH
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1300 select CPU_SUPPORTS_HIGHMEM
1304 depends on SYS_HAS_CPU_RM9000
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1308 select CPU_SUPPORTS_HIGHMEM
1309 select WEAK_ORDERING
1313 depends on SYS_HAS_CPU_SB1
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1316 select CPU_SUPPORTS_HIGHMEM
1317 select WEAK_ORDERING
1319 config CPU_CAVIUM_OCTEON
1320 bool "Cavium Octeon processor"
1321 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1323 select IRQ_CPU_OCTEON
1324 select CPU_HAS_PREFETCH
1325 select CPU_SUPPORTS_64BIT_KERNEL
1326 select SYS_SUPPORTS_SMP
1327 select NR_CPUS_DEFAULT_16
1328 select WEAK_ORDERING
1329 select WEAK_REORDERING_BEYOND_LLSC
1330 select CPU_SUPPORTS_HIGHMEM
1331 select CPU_SUPPORTS_HUGEPAGES
1333 The Cavium Octeon processor is a highly integrated chip containing
1334 many ethernet hardware widgets for networking tasks. The processor
1335 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1336 Full details can be found at http://www.caviumnetworks.com.
1340 config SYS_SUPPORTS_ZBOOT
1342 select HAVE_KERNEL_GZIP
1343 select HAVE_KERNEL_BZIP2
1344 select HAVE_KERNEL_LZMA
1346 config SYS_SUPPORTS_ZBOOT_UART16550
1348 select SYS_SUPPORTS_ZBOOT
1350 config CPU_LOONGSON2
1352 select CPU_SUPPORTS_32BIT_KERNEL
1353 select CPU_SUPPORTS_64BIT_KERNEL
1354 select CPU_SUPPORTS_HIGHMEM
1356 config SYS_HAS_CPU_LOONGSON2E
1359 config SYS_HAS_CPU_LOONGSON2F
1361 select CPU_SUPPORTS_CPUFREQ
1362 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1363 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1365 config SYS_HAS_CPU_MIPS32_R1
1368 config SYS_HAS_CPU_MIPS32_R2
1371 config SYS_HAS_CPU_MIPS64_R1
1374 config SYS_HAS_CPU_MIPS64_R2
1377 config SYS_HAS_CPU_R3000
1380 config SYS_HAS_CPU_TX39XX
1383 config SYS_HAS_CPU_VR41XX
1386 config SYS_HAS_CPU_R4300
1389 config SYS_HAS_CPU_R4X00
1392 config SYS_HAS_CPU_TX49XX
1395 config SYS_HAS_CPU_R5000
1398 config SYS_HAS_CPU_R5432
1401 config SYS_HAS_CPU_R5500
1404 config SYS_HAS_CPU_R6000
1407 config SYS_HAS_CPU_NEVADA
1410 config SYS_HAS_CPU_R8000
1413 config SYS_HAS_CPU_R10000
1416 config SYS_HAS_CPU_RM7000
1419 config SYS_HAS_CPU_RM9000
1422 config SYS_HAS_CPU_SB1
1425 config SYS_HAS_CPU_CAVIUM_OCTEON
1429 # CPU may reorder R->R, R->W, W->R, W->W
1430 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1432 config WEAK_ORDERING
1436 # CPU may reorder reads and writes beyond LL/SC
1437 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1439 config WEAK_REORDERING_BEYOND_LLSC
1444 # These two indicate any level of the MIPS32 and MIPS64 architecture
1448 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1452 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1455 # These two indicate the revision of the architecture, either Release 1 or Release 2
1459 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1463 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1465 config SYS_SUPPORTS_32BIT_KERNEL
1467 config SYS_SUPPORTS_64BIT_KERNEL
1469 config CPU_SUPPORTS_32BIT_KERNEL
1471 config CPU_SUPPORTS_64BIT_KERNEL
1473 config CPU_SUPPORTS_CPUFREQ
1475 config CPU_SUPPORTS_ADDRWINCFG
1477 config CPU_SUPPORTS_HUGEPAGES
1479 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1481 config MIPS_PGD_C0_CONTEXT
1483 default y if 64BIT && CPU_MIPSR2
1486 # Set to y for ptrace access to watch registers.
1488 config HARDWARE_WATCHPOINTS
1490 default y if CPU_MIPSR1 || CPU_MIPSR2
1496 prompt "Kernel code model"
1498 You should only select this option if you have a workload that
1499 actually benefits from 64-bit processing or if your machine has
1500 large memory. You will only be presented a single option in this
1501 menu if your system does not support both 32-bit and 64-bit kernels.
1504 bool "32-bit kernel"
1505 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1508 Select this option if you want to build a 32-bit kernel.
1510 bool "64-bit kernel"
1511 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1512 select HAVE_SYSCALL_WRAPPERS
1514 Select this option if you want to build a 64-bit kernel.
1519 prompt "Kernel page size"
1520 default PAGE_SIZE_4KB
1522 config PAGE_SIZE_4KB
1524 depends on !CPU_LOONGSON2
1526 This option select the standard 4kB Linux page size. On some
1527 R3000-family processors this is the only available page size. Using
1528 4kB page size will minimize memory consumption and is therefore
1529 recommended for low memory systems.
1531 config PAGE_SIZE_8KB
1533 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1535 Using 8kB page size will result in higher performance kernel at
1536 the price of higher memory consumption. This option is available
1537 only on R8000 and cnMIPS processors. Note that you will need a
1538 suitable Linux distribution to support this.
1540 config PAGE_SIZE_16KB
1542 depends on !CPU_R3000 && !CPU_TX39XX
1544 Using 16kB page size will result in higher performance kernel at
1545 the price of higher memory consumption. This option is available on
1546 all non-R3000 family processors. Note that you will need a suitable
1547 Linux distribution to support this.
1549 config PAGE_SIZE_32KB
1551 depends on CPU_CAVIUM_OCTEON
1553 Using 32kB page size will result in higher performance kernel at
1554 the price of higher memory consumption. This option is available
1555 only on cnMIPS cores. Note that you will need a suitable Linux
1556 distribution to support this.
1558 config PAGE_SIZE_64KB
1560 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1562 Using 64kB page size will result in higher performance kernel at
1563 the price of higher memory consumption. This option is available on
1564 all non-R3000 family processor. Not that at the time of this
1565 writing this option is still high experimental.
1572 config IP22_CPU_SCACHE
1577 # Support for a MIPS32 / MIPS64 style S-caches
1579 config MIPS_CPU_SCACHE
1583 config R5000_CPU_SCACHE
1587 config RM7000_CPU_SCACHE
1591 config SIBYTE_DMA_PAGEOPS
1592 bool "Use DMA to clear/copy pages"
1595 Instead of using the CPU to zero and copy pages, use a Data Mover
1596 channel. These DMA channels are otherwise unused by the standard
1597 SiByte Linux port. Seems to give a small performance benefit.
1599 config CPU_HAS_PREFETCH
1603 prompt "MIPS MT options"
1605 config MIPS_MT_DISABLED
1606 bool "Disable multithreading support."
1608 Use this option if your workload can't take advantage of
1609 MIPS hardware multithreading support. On systems that don't have
1610 the option of an MT-enabled processor this option will be the only
1611 option in this menu.
1614 bool "Use 1 TC on each available VPE for SMP"
1615 depends on SYS_SUPPORTS_MULTITHREADING
1616 select CPU_MIPSR2_IRQ_VI
1617 select CPU_MIPSR2_IRQ_EI
1619 select NR_CPUS_DEFAULT_2
1621 select SYS_SUPPORTS_SCHED_SMT if SMP
1622 select SYS_SUPPORTS_SMP
1625 This is a kernel model which is also known a VSMP or lately
1626 has been marketesed into SMVP.
1629 bool "SMTC: Use all TCs on all VPEs for SMP"
1630 depends on CPU_MIPS32_R2
1631 #depends on CPU_MIPS64_R2 # once there is hardware ...
1632 depends on SYS_SUPPORTS_MULTITHREADING
1633 select CPU_MIPSR2_IRQ_VI
1634 select CPU_MIPSR2_IRQ_EI
1636 select NR_CPUS_DEFAULT_8
1638 select SYS_SUPPORTS_SMP
1641 This is a kernel model which is known a SMTC or lately has been
1642 marketesed into SMVP.
1650 bool "SMT (multithreading) scheduler support"
1651 depends on SYS_SUPPORTS_SCHED_SMT
1654 SMT scheduler support improves the CPU scheduler's decision making
1655 when dealing with MIPS MT enabled cores at a cost of slightly
1656 increased overhead in some places. If unsure say N here.
1658 config SYS_SUPPORTS_SCHED_SMT
1662 config SYS_SUPPORTS_MULTITHREADING
1665 config MIPS_MT_FPAFF
1666 bool "Dynamic FPU affinity for FP-intensive threads"
1668 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1670 config MIPS_VPE_LOADER
1671 bool "VPE loader support."
1672 depends on SYS_SUPPORTS_MULTITHREADING
1673 select CPU_MIPSR2_IRQ_VI
1674 select CPU_MIPSR2_IRQ_EI
1677 Includes a loader for loading an elf relocatable object
1678 onto another VPE and running it.
1680 config MIPS_MT_SMTC_IM_BACKSTOP
1681 bool "Use per-TC register bits as backstop for inhibited IM bits"
1682 depends on MIPS_MT_SMTC
1685 To support multiple TC microthreads acting as "CPUs" within
1686 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1687 during interrupt handling. To support legacy drivers and interrupt
1688 controller management code, SMTC has a "backstop" to track and
1689 if necessary restore the interrupt mask. This has some performance
1690 impact on interrupt service overhead.
1692 config MIPS_MT_SMTC_IRQAFF
1693 bool "Support IRQ affinity API"
1694 depends on MIPS_MT_SMTC
1697 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1698 for SMTC Linux kernel. Requires platform support, of which
1699 an example can be found in the MIPS kernel i8259 and Malta
1700 platform code. Adds some overhead to interrupt dispatch, and
1701 should be used only if you know what you are doing.
1703 config MIPS_VPE_LOADER_TOM
1704 bool "Load VPE program into memory hidden from linux"
1705 depends on MIPS_VPE_LOADER
1708 The loader can use memory that is present but has been hidden from
1709 Linux using the kernel command line option "mem=xxMB". It's up to
1710 you to ensure the amount you put in the option and the space your
1711 program requires is less or equal to the amount physically present.
1713 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1714 config MIPS_VPE_APSP_API
1715 bool "Enable support for AP/SP API (RTLX)"
1716 depends on MIPS_VPE_LOADER
1719 config MIPS_APSP_KSPD
1721 depends on MIPS_VPE_APSP_API
1724 KSPD is a kernel daemon that accepts syscall requests from the SP
1725 side, actions them and returns the results. It also handles the
1726 "exit" syscall notifying other kernel modules the SP program is
1727 exiting. You probably want to say yes here.
1730 bool "MIPS CMP framework support"
1731 depends on SYS_SUPPORTS_MIPS_CMP
1733 select SYS_SUPPORTS_SMP
1734 select SYS_SUPPORTS_SCHED_SMT if SMP
1735 select WEAK_ORDERING
1738 This is a placeholder option for the GCMP work. It will need to
1739 be handled differently...
1741 config SB1_PASS_1_WORKAROUNDS
1743 depends on CPU_SB1_PASS_1
1746 config SB1_PASS_2_WORKAROUNDS
1748 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1751 config SB1_PASS_2_1_WORKAROUNDS
1753 depends on CPU_SB1 && CPU_SB1_PASS_2
1756 config 64BIT_PHYS_ADDR
1759 config CPU_HAS_SMARTMIPS
1760 depends on SYS_SUPPORTS_SMARTMIPS
1761 bool "Support for the SmartMIPS ASE"
1763 SmartMIPS is a extension of the MIPS32 architecture aimed at
1764 increased security at both hardware and software level for
1765 smartcards. Enabling this option will allow proper use of the
1766 SmartMIPS instructions by Linux applications. However a kernel with
1767 this option will not work on a MIPS core without SmartMIPS core. If
1768 you don't know you probably don't have SmartMIPS and should say N
1775 # Vectored interrupt mode is an R2 feature
1777 config CPU_MIPSR2_IRQ_VI
1781 # Extended interrupt mode is an R2 feature
1783 config CPU_MIPSR2_IRQ_EI
1788 depends on !CPU_R3000
1791 config GENERIC_CLOCKEVENTS_BROADCAST
1797 config CPU_DADDI_WORKAROUNDS
1800 config CPU_R4000_WORKAROUNDS
1802 select CPU_R4400_WORKAROUNDS
1804 config CPU_R4400_WORKAROUNDS
1808 # Use the generic interrupt handling code in kernel/irq/:
1810 config GENERIC_HARDIRQS
1814 config GENERIC_IRQ_PROBE
1822 # - Highmem only makes sense for the 32-bit kernel.
1823 # - The current highmem code will only work properly on physically indexed
1824 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1825 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1826 # moment we protect the user and offer the highmem option only on machines
1827 # where it's known to be safe. This will not offer highmem on a few systems
1828 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1829 # indexed CPUs but we're playing safe.
1830 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1831 # know they might have memory configurations that could make use of highmem
1835 bool "High Memory Support"
1836 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1838 config CPU_SUPPORTS_HIGHMEM
1841 config SYS_SUPPORTS_HIGHMEM
1844 config SYS_SUPPORTS_SMARTMIPS
1847 config ARCH_FLATMEM_ENABLE
1849 depends on !NUMA && !CPU_LOONGSON2
1851 config ARCH_DISCONTIGMEM_ENABLE
1853 default y if SGI_IP27
1855 Say Y to support efficient handling of discontiguous physical memory,
1856 for architectures which are either NUMA (Non-Uniform Memory Access)
1857 or have huge holes in the physical address space for other reasons.
1858 See <file:Documentation/vm/numa> for more.
1860 config ARCH_POPULATES_NODE_MAP
1863 config ARCH_SPARSEMEM_ENABLE
1865 select SPARSEMEM_STATIC
1869 depends on SYS_SUPPORTS_NUMA
1871 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1872 Access). This option improves performance on systems with more
1873 than two nodes; on two node systems it is generally better to
1874 leave it disabled; on single node systems disable this option
1877 config SYS_SUPPORTS_NUMA
1883 depends on NEED_MULTIPLE_NODES
1888 bool "Multi-Processing support"
1889 depends on SYS_SUPPORTS_SMP
1891 select USE_GENERIC_SMP_HELPERS
1893 This enables support for systems with more than one CPU. If you have
1894 a system with only one CPU, like most personal computers, say N. If
1895 you have a system with more than one CPU, say Y.
1897 If you say N here, the kernel will run on single and multiprocessor
1898 machines, but will use only one CPU of a multiprocessor machine. If
1899 you say Y here, the kernel will run on many, but not all,
1900 singleprocessor machines. On a singleprocessor machine, the kernel
1901 will run faster if you say N here.
1903 People using multiprocessor machines who say Y here should also say
1904 Y to "Enhanced Real Time Clock Support", below.
1906 See also the SMP-HOWTO available at
1907 <http://www.tldp.org/docs.html#howto>.
1909 If you don't know what to do here, say N.
1914 config SYS_SUPPORTS_MIPS_CMP
1917 config SYS_SUPPORTS_SMP
1920 config NR_CPUS_DEFAULT_1
1923 config NR_CPUS_DEFAULT_2
1926 config NR_CPUS_DEFAULT_4
1929 config NR_CPUS_DEFAULT_8
1932 config NR_CPUS_DEFAULT_16
1935 config NR_CPUS_DEFAULT_32
1938 config NR_CPUS_DEFAULT_64
1942 int "Maximum number of CPUs (2-64)"
1943 range 1 64 if NR_CPUS_DEFAULT_1
1945 default "1" if NR_CPUS_DEFAULT_1
1946 default "2" if NR_CPUS_DEFAULT_2
1947 default "4" if NR_CPUS_DEFAULT_4
1948 default "8" if NR_CPUS_DEFAULT_8
1949 default "16" if NR_CPUS_DEFAULT_16
1950 default "32" if NR_CPUS_DEFAULT_32
1951 default "64" if NR_CPUS_DEFAULT_64
1953 This allows you to specify the maximum number of CPUs which this
1954 kernel will support. The maximum supported value is 32 for 32-bit
1955 kernel and 64 for 64-bit kernels; the minimum value which makes
1956 sense is 1 for Qemu (useful only for kernel debugging purposes)
1957 and 2 for all others.
1959 This is purely to save memory - each supported CPU adds
1960 approximately eight kilobytes to the kernel image. For best
1961 performance should round up your number of processors to the next
1964 source "kernel/time/Kconfig"
1967 # Timer Interrupt Frequency Configuration
1971 prompt "Timer frequency"
1974 Allows the configuration of the timer frequency.
1977 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1980 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1983 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1986 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1989 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1992 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1995 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1999 config SYS_SUPPORTS_48HZ
2002 config SYS_SUPPORTS_100HZ
2005 config SYS_SUPPORTS_128HZ
2008 config SYS_SUPPORTS_250HZ
2011 config SYS_SUPPORTS_256HZ
2014 config SYS_SUPPORTS_1000HZ
2017 config SYS_SUPPORTS_1024HZ
2020 config SYS_SUPPORTS_ARBIT_HZ
2022 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2023 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2024 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2025 !SYS_SUPPORTS_1024HZ
2030 default 100 if HZ_100
2031 default 128 if HZ_128
2032 default 250 if HZ_250
2033 default 256 if HZ_256
2034 default 1000 if HZ_1000
2035 default 1024 if HZ_1024
2037 source "kernel/Kconfig.preempt"
2039 config MIPS_INSANE_LARGE
2040 bool "Support for large 64-bit configurations"
2041 depends on CPU_R10000 && 64BIT
2043 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2044 previous 64-bit processors which only supported 40 bit / 1TB. If you
2045 need processes of more than 1TB virtual address space, say Y here.
2046 This will result in additional memory usage, so it is not
2047 recommended for normal users.
2050 bool "Kexec system call (EXPERIMENTAL)"
2051 depends on EXPERIMENTAL
2053 kexec is a system call that implements the ability to shutdown your
2054 current kernel, and to start another kernel. It is like a reboot
2055 but it is independent of the system firmware. And like a reboot
2056 you can start any kernel with it, not just Linux.
2058 The name comes from the similarity to the exec system call.
2060 It is an ongoing process to be certain the hardware in a machine
2061 is properly shutdown, so do not be surprised if this code does not
2062 initially work for you. It may help to enable device hotplugging
2063 support. As of this writing the exact hardware interface is
2064 strongly in flux, so no good recommendation can be made.
2067 bool "Enable seccomp to safely compute untrusted bytecode"
2071 This kernel feature is useful for number crunching applications
2072 that may need to compute untrusted bytecode during their
2073 execution. By using pipes or other transports made available to
2074 the process as file descriptors supporting the read/write
2075 syscalls, it's possible to isolate those applications in
2076 their own address space using seccomp. Once seccomp is
2077 enabled via /proc/<pid>/seccomp, it cannot be disabled
2078 and the task is only allowed to execute a few safe syscalls
2079 defined by each seccomp mode.
2081 If unsure, say Y. Only embedded should say N here.
2085 config LOCKDEP_SUPPORT
2089 config STACKTRACE_SUPPORT
2093 source "init/Kconfig"
2095 source "kernel/Kconfig.freezer"
2097 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2105 bool "Support for PCI controller"
2106 depends on HW_HAS_PCI
2109 Find out whether you have a PCI motherboard. PCI is the name of a
2110 bus system, i.e. the way the CPU talks to the other stuff inside
2111 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2117 source "drivers/pci/Kconfig"
2120 # ISA support is now enabled via select. Too many systems still have the one
2121 # or other ISA chip on the board that users don't know about so don't expect
2122 # users to choose the right thing ...
2129 depends on HW_HAS_EISA
2131 select GENERIC_ISA_DMA
2133 The Extended Industry Standard Architecture (EISA) bus was
2134 developed as an open alternative to the IBM MicroChannel bus.
2136 The EISA bus provided some of the features of the IBM MicroChannel
2137 bus while maintaining backward compatibility with cards made for
2138 the older ISA bus. The EISA bus saw limited use between 1988 and
2139 1995 when it was made obsolete by the PCI bus.
2141 Say Y here if you are building a kernel for an EISA-based machine.
2145 source "drivers/eisa/Kconfig"
2148 bool "TURBOchannel support"
2149 depends on MACH_DECSTATION
2151 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2152 processors. Documentation on writing device drivers for TurboChannel
2154 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2157 # bool "Access.Bus support"
2166 select MIPS_EXTERNAL_TIMER
2171 source "drivers/pcmcia/Kconfig"
2173 source "drivers/pci/hotplug/Kconfig"
2177 menu "Executable file formats"
2179 source "fs/Kconfig.binfmt"
2184 config MIPS32_COMPAT
2185 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2188 Select this option if you want Linux/MIPS 32-bit binary
2189 compatibility. Since all software available for Linux/MIPS is
2190 currently 32-bit you should say Y here.
2194 depends on MIPS32_COMPAT
2197 config SYSVIPC_COMPAT
2199 depends on COMPAT && SYSVIPC
2203 bool "Kernel support for o32 binaries"
2204 depends on MIPS32_COMPAT
2206 Select this option if you want to run o32 binaries. These are pure
2207 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2208 existing binaries are in this format.
2213 bool "Kernel support for n32 binaries"
2214 depends on MIPS32_COMPAT
2216 Select this option if you want to run n32 binaries. These are
2217 64-bit binaries using 32-bit quantities for addressing and certain
2218 data that would normally be 64-bit. They are used in special
2225 default y if MIPS32_O32 || MIPS32_N32
2229 menu "Power management options"
2231 config ARCH_HIBERNATION_POSSIBLE
2233 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2235 config ARCH_SUSPEND_POSSIBLE
2237 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2239 source "kernel/power/Kconfig"
2243 source "arch/mips/kernel/cpufreq/Kconfig"
2245 source "net/Kconfig"
2247 source "drivers/Kconfig"
2251 source "arch/mips/Kconfig.debug"
2253 source "security/Kconfig"
2255 source "crypto/Kconfig"
2257 source "lib/Kconfig"