4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
10 select HAVE_DYNAMIC_FTRACE
11 select HAVE_FTRACE_MCOUNT_RECORD
12 select HAVE_FUNCTION_GRAPH_TRACER
14 select HAVE_KRETPROBES
15 select RTC_LIB if !MACH_LOONGSON
16 select GENERIC_ATOMIC64 if !64BIT
18 select HAVE_DMA_API_DEBUG
20 menu "Machine selection"
30 bool "Alchemy processor based machines"
31 select 64BIT_PHYS_ADDR
35 select SYS_HAS_CPU_MIPS32_R1
36 select SYS_SUPPORTS_32BIT_KERNEL
37 select SYS_SUPPORTS_APM_EMULATION
39 select ARCH_WANT_OPTIONAL_GPIOLIB
40 select SYS_SUPPORTS_ZBOOT
43 bool "Texas Instruments AR7"
45 select DMA_NONCOHERENT
51 select SYS_HAS_CPU_MIPS32_R1
52 select SYS_HAS_EARLY_PRINTK
53 select SYS_SUPPORTS_32BIT_KERNEL
54 select SYS_SUPPORTS_LITTLE_ENDIAN
55 select SYS_SUPPORTS_ZBOOT_UART16550
56 select ARCH_REQUIRE_GPIOLIB
60 Support for the Texas Instruments AR7 System-on-a-Chip
61 family: TNETD7100, 7200 and 7300.
64 bool "Broadcom BCM47XX based boards"
67 select DMA_NONCOHERENT
70 select SYS_HAS_CPU_MIPS32_R1
71 select SYS_SUPPORTS_32BIT_KERNEL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
74 select SSB_DRIVER_MIPS
75 select SSB_DRIVER_EXTIF
77 select SSB_B43_PCI_BRIDGE if PCI
78 select SSB_PCICORE_HOSTMODE if PCI
80 select SYS_HAS_EARLY_PRINTK
83 Support for BCM47XX based boards
86 bool "Broadcom BCM63XX based boards"
89 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_MIPS32_R1
92 select SYS_SUPPORTS_32BIT_KERNEL
93 select SYS_SUPPORTS_BIG_ENDIAN
94 select SYS_HAS_EARLY_PRINTK
96 select ARCH_REQUIRE_GPIOLIB
98 Support for BCM63XX based boards
105 select DMA_NONCOHERENT
111 select PCI_GT64XXX_PCI0
113 select SYS_HAS_CPU_NEVADA
114 select SYS_HAS_EARLY_PRINTK
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_SUPPORTS_64BIT_KERNEL
117 select SYS_SUPPORTS_LITTLE_ENDIAN
119 config MACH_DECSTATION
126 select CPU_DADDI_WORKAROUNDS if 64BIT
127 select CPU_R4000_WORKAROUNDS if 64BIT
128 select CPU_R4400_WORKAROUNDS if 64BIT
129 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_R3000
133 select SYS_HAS_CPU_R4X00
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
136 select SYS_SUPPORTS_LITTLE_ENDIAN
137 select SYS_SUPPORTS_128HZ
138 select SYS_SUPPORTS_256HZ
139 select SYS_SUPPORTS_1024HZ
141 This enables support for DEC's MIPS based workstations. For details
142 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
143 DECstation porting pages on <http://decstation.unix-ag.org/>.
145 If you have one of the following DECstation Models you definitely
146 want to choose R4xx0 for the CPU Type:
153 otherwise choose R3000.
156 bool "Jazz family of machines"
159 select ARCH_MAY_HAVE_PC_FDC
162 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
163 select GENERIC_ISA_DMA
168 select SYS_HAS_CPU_R4X00
169 select SYS_SUPPORTS_32BIT_KERNEL
170 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
171 select SYS_SUPPORTS_100HZ
173 This a family of machines based on the MIPS R4030 chipset which was
174 used by several vendors to build RISC/os and Windows NT workstations.
175 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
176 Olivetti M700-10 workstations.
179 bool "Ingenic JZ4740 based machines"
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_SUPPORTS_LITTLE_ENDIAN
183 select DMA_NONCOHERENT
186 select ARCH_REQUIRE_GPIOLIB
187 select SYS_HAS_EARLY_PRINTK
191 bool "LASAT Networks platforms"
194 select DMA_NONCOHERENT
195 select SYS_HAS_EARLY_PRINTK
198 select PCI_GT64XXX_PCI0
200 select R5000_CPU_SCACHE
201 select SYS_HAS_CPU_R5000
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
204 select SYS_SUPPORTS_LITTLE_ENDIAN
207 bool "Loongson family of machines"
208 select SYS_SUPPORTS_ZBOOT
210 This enables the support of Loongson family of machines.
212 Loongson is a family of general-purpose MIPS-compatible CPUs.
213 developed at Institute of Computing Technology (ICT),
214 Chinese Academy of Sciences (CAS) in the People's Republic
215 of China. The chief architect is Professor Weiwu Hu.
218 bool "MIPS Malta board"
219 select ARCH_MAY_HAVE_PC_FDC
224 select DMA_NONCOHERENT
225 select GENERIC_ISA_DMA
231 select MIPS_BOARDS_GEN
233 select MIPS_CPU_SCACHE
234 select PCI_GT64XXX_PCI0
237 select SYS_HAS_CPU_MIPS32_R1
238 select SYS_HAS_CPU_MIPS32_R2
239 select SYS_HAS_CPU_MIPS64_R1
240 select SYS_HAS_CPU_NEVADA
241 select SYS_HAS_CPU_RM7000
242 select SYS_HAS_EARLY_PRINTK
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_64BIT_KERNEL
245 select SYS_SUPPORTS_BIG_ENDIAN
246 select SYS_SUPPORTS_LITTLE_ENDIAN
247 select SYS_SUPPORTS_MIPS_CMP
248 select SYS_SUPPORTS_MULTITHREADING
249 select SYS_SUPPORTS_SMARTMIPS
250 select SYS_SUPPORTS_ZBOOT
252 This enables support for the MIPS Technologies Malta evaluation
256 bool 'MIPS simulator (MIPSsim)'
259 select DMA_NONCOHERENT
260 select SYS_HAS_EARLY_PRINTK
263 select SYS_HAS_CPU_MIPS32_R1
264 select SYS_HAS_CPU_MIPS32_R2
265 select SYS_HAS_EARLY_PRINTK
266 select SYS_SUPPORTS_32BIT_KERNEL
267 select SYS_SUPPORTS_BIG_ENDIAN
268 select SYS_SUPPORTS_MULTITHREADING
269 select SYS_SUPPORTS_LITTLE_ENDIAN
271 This option enables support for MIPS Technologies MIPSsim software
275 bool "NEC EMMA2RH Mark-eins board"
279 This enables support for the NEC Electronics Mark-eins boards.
282 bool "NEC VR4100 series based machines"
285 select SYS_HAS_CPU_VR41XX
286 select ARCH_REQUIRE_GPIOLIB
289 bool "NXP STB220 board"
292 Support for NXP Semiconductors STB220 Development Board.
299 Support for NXP Semiconductors STB225 Development Board.
302 bool "NXP PNX8550 based JBS board"
304 select SYS_SUPPORTS_LITTLE_ENDIAN
306 config PNX8550_STB810
307 bool "NXP PNX8550 based STB810 board"
309 select SYS_SUPPORTS_LITTLE_ENDIAN
312 bool "PMC-Sierra MSP chipsets"
313 depends on EXPERIMENTAL
314 select DMA_NONCOHERENT
316 select NO_EXCEPT_FILL
318 select SYS_HAS_CPU_MIPS32_R1
319 select SYS_HAS_CPU_MIPS32_R2
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_BIG_ENDIAN
324 select SERIAL_8250_CONSOLE
326 This adds support for the PMC-Sierra family of Multi-Service
327 Processor System-On-A-Chips. These parts include a number
328 of integrated peripherals, interfaces and DSPs in addition to
329 a variety of MIPS cores.
332 bool "PMC-Sierra Yosemite eval board"
341 select SYS_HAS_CPU_RM9000
342 select SYS_HAS_EARLY_PRINTK
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_64BIT_KERNEL
345 select SYS_SUPPORTS_BIG_ENDIAN
346 select SYS_SUPPORTS_HIGHMEM
347 select SYS_SUPPORTS_SMP
349 Yosemite is an evaluation board for the RM9000x2 processor
350 manufactured by PMC-Sierra.
356 select CPU_MIPSR2_IRQ_VI
357 select CPU_MIPSR2_IRQ_EI
359 select DMA_NONCOHERENT
361 select SYS_HAS_EARLY_PRINTK
362 select SYS_HAS_CPU_MIPS32_R2
363 select SYS_SUPPORTS_32BIT_KERNEL
364 select SYS_SUPPORTS_BIG_ENDIAN
365 select SYS_SUPPORTS_HIGHMEM
366 select USB_OHCI_LITTLE_ENDIAN
368 This enables support for the Cisco PowerTV Platform.
371 bool "SGI IP22 (Indy/Indigo2)"
377 select DEFAULT_SGI_PARTITION
378 select DMA_NONCOHERENT
382 select IP22_CPU_SCACHE
384 select GENERIC_ISA_DMA_SUPPORT_BROKEN
386 select SGI_HAS_INDYDOG
392 select SYS_HAS_CPU_R4X00
393 select SYS_HAS_CPU_R5000
395 # Disable EARLY_PRINTK for now since it leads to overwritten prom
396 # memory during early boot on some machines.
398 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
399 # for a more details discussion
401 # select SYS_HAS_EARLY_PRINTK
402 select SYS_SUPPORTS_32BIT_KERNEL
403 select SYS_SUPPORTS_64BIT_KERNEL
404 select SYS_SUPPORTS_BIG_ENDIAN
406 This are the SGI Indy, Challenge S and Indigo2, as well as certain
407 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
408 that runs on these, say Y here.
411 bool "SGI IP27 (Origin200/2000)"
415 select DEFAULT_SGI_PARTITION
417 select SYS_HAS_EARLY_PRINTK
419 select NR_CPUS_DEFAULT_64
420 select SYS_HAS_CPU_R10000
421 select SYS_SUPPORTS_64BIT_KERNEL
422 select SYS_SUPPORTS_BIG_ENDIAN
423 select SYS_SUPPORTS_NUMA
424 select SYS_SUPPORTS_SMP
426 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
427 workstations. To compile a Linux kernel that runs on these, say Y
431 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
432 depends on EXPERIMENTAL
438 select DEFAULT_SGI_PARTITION
439 select DMA_NONCOHERENT
440 select GENERIC_ISA_DMA_SUPPORT_BROKEN
446 select SGI_HAS_INDYDOG
452 select SYS_HAS_CPU_R10000
454 # Disable EARLY_PRINTK for now since it leads to overwritten prom
455 # memory during early boot on some machines.
457 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
458 # for a more details discussion
460 # select SYS_HAS_EARLY_PRINTK
461 select SYS_SUPPORTS_64BIT_KERNEL
462 select SYS_SUPPORTS_BIG_ENDIAN
464 This is the SGI Indigo2 with R10000 processor. To compile a Linux
465 kernel that runs on these, say Y here.
474 select DMA_NONCOHERENT
477 select R5000_CPU_SCACHE
478 select RM7000_CPU_SCACHE
479 select SYS_HAS_CPU_R5000
480 select SYS_HAS_CPU_R10000 if BROKEN
481 select SYS_HAS_CPU_RM7000
482 select SYS_HAS_CPU_NEVADA
483 select SYS_SUPPORTS_64BIT_KERNEL
484 select SYS_SUPPORTS_BIG_ENDIAN
486 If you want this kernel to run on SGI O2 workstation, say Y here.
489 bool "Sibyte BCM91120C-CRhine"
490 depends on EXPERIMENTAL
493 select SIBYTE_BCM1120
495 select SYS_HAS_CPU_SB1
496 select SYS_SUPPORTS_BIG_ENDIAN
497 select SYS_SUPPORTS_LITTLE_ENDIAN
500 bool "Sibyte BCM91120x-Carmel"
501 depends on EXPERIMENTAL
504 select SIBYTE_BCM1120
506 select SYS_HAS_CPU_SB1
507 select SYS_SUPPORTS_BIG_ENDIAN
508 select SYS_SUPPORTS_LITTLE_ENDIAN
511 bool "Sibyte BCM91125C-CRhone"
512 depends on EXPERIMENTAL
515 select SIBYTE_BCM1125
517 select SYS_HAS_CPU_SB1
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_HIGHMEM
520 select SYS_SUPPORTS_LITTLE_ENDIAN
523 bool "Sibyte BCM91125E-Rhone"
524 depends on EXPERIMENTAL
527 select SIBYTE_BCM1125H
529 select SYS_HAS_CPU_SB1
530 select SYS_SUPPORTS_BIG_ENDIAN
531 select SYS_SUPPORTS_LITTLE_ENDIAN
534 bool "Sibyte BCM91250A-SWARM"
537 select HAVE_PATA_PLATFORM
538 select NR_CPUS_DEFAULT_2
541 select SYS_HAS_CPU_SB1
542 select SYS_SUPPORTS_BIG_ENDIAN
543 select SYS_SUPPORTS_HIGHMEM
544 select SYS_SUPPORTS_LITTLE_ENDIAN
545 select ZONE_DMA32 if 64BIT
547 config SIBYTE_LITTLESUR
548 bool "Sibyte BCM91250C2-LittleSur"
549 depends on EXPERIMENTAL
552 select HAVE_PATA_PLATFORM
553 select NR_CPUS_DEFAULT_2
556 select SYS_HAS_CPU_SB1
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_HIGHMEM
559 select SYS_SUPPORTS_LITTLE_ENDIAN
561 config SIBYTE_SENTOSA
562 bool "Sibyte BCM91250E-Sentosa"
563 depends on EXPERIMENTAL
566 select NR_CPUS_DEFAULT_2
569 select SYS_HAS_CPU_SB1
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_LITTLE_ENDIAN
574 bool "Sibyte BCM91480B-BigSur"
577 select NR_CPUS_DEFAULT_4
578 select SIBYTE_BCM1x80
580 select SYS_HAS_CPU_SB1
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_HIGHMEM
583 select SYS_SUPPORTS_LITTLE_ENDIAN
584 select ZONE_DMA32 if 64BIT
587 bool "SNI RM200/300/400"
588 select ARC if CPU_LITTLE_ENDIAN
589 select ARC32 if CPU_LITTLE_ENDIAN
590 select SNIPROM if CPU_BIG_ENDIAN
591 select ARCH_MAY_HAVE_PC_FDC
595 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
596 select DMA_NONCOHERENT
597 select GENERIC_ISA_DMA
604 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
605 select SYS_HAS_CPU_R4X00
606 select SYS_HAS_CPU_R5000
607 select SYS_HAS_CPU_R10000
608 select R5000_CPU_SCACHE
609 select SYS_HAS_EARLY_PRINTK
610 select SYS_SUPPORTS_32BIT_KERNEL
611 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
612 select SYS_SUPPORTS_BIG_ENDIAN
613 select SYS_SUPPORTS_HIGHMEM
614 select SYS_SUPPORTS_LITTLE_ENDIAN
616 The SNI RM200/300/400 are MIPS-based machines manufactured by
617 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
618 Technology and now in turn merged with Fujitsu. Say Y here to
619 support this machine type.
622 bool "Toshiba TX39 series based machines"
625 bool "Toshiba TX49 series based machines"
627 config MIKROTIK_RB532
628 bool "Mikrotik RB532 boards"
631 select DMA_NONCOHERENT
634 select SYS_HAS_CPU_MIPS32_R1
635 select SYS_SUPPORTS_32BIT_KERNEL
636 select SYS_SUPPORTS_LITTLE_ENDIAN
639 select ARCH_REQUIRE_GPIOLIB
641 Support the Mikrotik(tm) RouterBoard 532 series,
642 based on the IDT RC32434 SoC.
645 bool "Wind River PPMC board"
650 select DMA_NONCOHERENT
652 select PCI_GT64XXX_PCI0
654 select SYS_HAS_CPU_MIPS32_R1
655 select SYS_HAS_CPU_MIPS32_R2
656 select SYS_HAS_CPU_MIPS64_R1
657 select SYS_HAS_CPU_NEVADA
658 select SYS_HAS_CPU_RM7000
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_LITTLE_ENDIAN
664 This enables support for the Wind River MIPS32 4KC PPMC evaluation
665 board, which is based on GT64120 bridge chip.
667 config CAVIUM_OCTEON_SIMULATOR
668 bool "Cavium Networks Octeon Simulator"
670 select 64BIT_PHYS_ADDR
672 select SYS_SUPPORTS_64BIT_KERNEL
673 select SYS_SUPPORTS_BIG_ENDIAN
674 select SYS_SUPPORTS_HIGHMEM
675 select SYS_SUPPORTS_HOTPLUG_CPU
676 select SYS_HAS_CPU_CAVIUM_OCTEON
678 The Octeon simulator is software performance model of the Cavium
679 Octeon Processor. It supports simulating Octeon processors on x86
682 config CAVIUM_OCTEON_REFERENCE_BOARD
683 bool "Cavium Networks Octeon reference board"
685 select 64BIT_PHYS_ADDR
687 select SYS_SUPPORTS_64BIT_KERNEL
688 select SYS_SUPPORTS_BIG_ENDIAN
689 select SYS_SUPPORTS_HIGHMEM
690 select SYS_SUPPORTS_HOTPLUG_CPU
691 select SYS_HAS_EARLY_PRINTK
692 select SYS_HAS_CPU_CAVIUM_OCTEON
695 select ARCH_SUPPORTS_MSI
697 select USB_ARCH_HAS_OHCI
698 select USB_ARCH_HAS_EHCI
700 This option supports all of the Octeon reference boards from Cavium
701 Networks. It builds a kernel that dynamically determines the Octeon
702 CPU type and supports all known board reference implementations.
703 Some of the supported boards are:
710 Say Y here for most Octeon reference boards.
714 source "arch/mips/alchemy/Kconfig"
715 source "arch/mips/bcm63xx/Kconfig"
716 source "arch/mips/jazz/Kconfig"
717 source "arch/mips/jz4740/Kconfig"
718 source "arch/mips/lasat/Kconfig"
719 source "arch/mips/pmc-sierra/Kconfig"
720 source "arch/mips/powertv/Kconfig"
721 source "arch/mips/sgi-ip27/Kconfig"
722 source "arch/mips/sibyte/Kconfig"
723 source "arch/mips/txx9/Kconfig"
724 source "arch/mips/vr41xx/Kconfig"
725 source "arch/mips/cavium-octeon/Kconfig"
726 source "arch/mips/loongson/Kconfig"
730 config RWSEM_GENERIC_SPINLOCK
734 config RWSEM_XCHGADD_ALGORITHM
737 config ARCH_HAS_ILOG2_U32
741 config ARCH_HAS_ILOG2_U64
745 config ARCH_SUPPORTS_OPROFILE
747 default y if !MIPS_MT_SMTC
749 config GENERIC_FIND_NEXT_BIT
753 config GENERIC_HWEIGHT
757 config GENERIC_CALIBRATE_DELAY
761 config GENERIC_CLOCKEVENTS
765 config GENERIC_CMOS_UPDATE
769 config SCHED_OMIT_FRAME_POINTER
773 config GENERIC_HARDIRQS_NO__DO_IRQ
777 # Select some configuration options automatically based on user selections.
782 config ARCH_MAY_HAVE_PC_FDC
831 select ARCH_REQUIRE_GPIOLIB
840 config DMA_NONCOHERENT
842 select NEED_DMA_MAP_STATE
844 config NEED_DMA_MAP_STATE
847 config SYS_HAS_EARLY_PRINTK
851 bool "Support for hot-pluggable CPUs"
852 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
854 Say Y here to allow turning CPUs off and on. CPUs can be
855 controlled through /sys/devices/system/cpu.
856 (Note: power management support will enable this option
857 automatically on SMP systems. )
858 Say N if you want to disable CPU hotplug.
860 config SYS_SUPPORTS_HOTPLUG_CPU
875 config MIPS_DISABLE_OBSOLETE_IDE
884 config GENERIC_ISA_DMA
886 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
889 config GENERIC_ISA_DMA_SUPPORT_BROKEN
891 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
927 config SYS_SUPPORTS_APM_EMULATION
930 config SYS_SUPPORTS_BIG_ENDIAN
933 config SYS_SUPPORTS_LITTLE_ENDIAN
936 config SYS_SUPPORTS_HUGETLBFS
938 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
965 config IRQ_CPU_OCTEON
968 config MIPS_BOARDS_GEN
971 config PCI_GT64XXX_PCI0
974 config NO_EXCEPT_FILL
985 select DMA_NONCOHERENT
988 select SYS_HAS_CPU_R5500
989 select SYS_SUPPORTS_32BIT_KERNEL
990 select SYS_SUPPORTS_64BIT_KERNEL
991 select SYS_SUPPORTS_BIG_ENDIAN
998 select DMA_NONCOHERENT
999 select SYS_HAS_CPU_MIPS32_R2
1000 select SYS_SUPPORTS_32BIT_KERNEL
1001 select SYS_SUPPORTS_LITTLE_ENDIAN
1002 select SYS_SUPPORTS_BIG_ENDIAN
1004 select CPU_MIPSR2_IRQ_VI
1016 select DMA_NONCOHERENT
1018 select SYS_HAS_CPU_MIPS32_R1
1019 select SYS_HAS_EARLY_PRINTK
1020 select SYS_SUPPORTS_32BIT_KERNEL
1023 config SWAP_IO_SPACE
1026 config SERIAL_RM9000
1029 config SGI_HAS_INDYDOG
1041 config SGI_HAS_ZILOG
1044 config SGI_HAS_I8042
1047 config DEFAULT_SGI_PARTITION
1059 config MIPS_L1_CACHE_SHIFT
1061 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1062 default "6" if MIPS_CPU_SCACHE
1063 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1066 config HAVE_STD_PC_SERIAL_PORT
1070 bool "ARC console support"
1071 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1075 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1080 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1089 menu "CPU selection"
1095 config CPU_LOONGSON2E
1097 depends on SYS_HAS_CPU_LOONGSON2E
1098 select CPU_LOONGSON2
1100 The Loongson 2E processor implements the MIPS III instruction set
1101 with many extensions.
1103 It has an internal FPGA northbridge, which is compatiable to
1106 config CPU_LOONGSON2F
1108 depends on SYS_HAS_CPU_LOONGSON2F
1109 select CPU_LOONGSON2
1111 select ARCH_REQUIRE_GPIOLIB
1113 The Loongson 2F processor implements the MIPS III instruction set
1114 with many extensions.
1116 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1117 have a similar programming interface with FPGA northbridge used in
1120 config CPU_MIPS32_R1
1121 bool "MIPS32 Release 1"
1122 depends on SYS_HAS_CPU_MIPS32_R1
1123 select CPU_HAS_PREFETCH
1124 select CPU_SUPPORTS_32BIT_KERNEL
1125 select CPU_SUPPORTS_HIGHMEM
1127 Choose this option to build a kernel for release 1 or later of the
1128 MIPS32 architecture. Most modern embedded systems with a 32-bit
1129 MIPS processor are based on a MIPS32 processor. If you know the
1130 specific type of processor in your system, choose those that one
1131 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1132 Release 2 of the MIPS32 architecture is available since several
1133 years so chances are you even have a MIPS32 Release 2 processor
1134 in which case you should choose CPU_MIPS32_R2 instead for better
1137 config CPU_MIPS32_R2
1138 bool "MIPS32 Release 2"
1139 depends on SYS_HAS_CPU_MIPS32_R2
1140 select CPU_HAS_PREFETCH
1141 select CPU_SUPPORTS_32BIT_KERNEL
1142 select CPU_SUPPORTS_HIGHMEM
1144 Choose this option to build a kernel for release 2 or later of the
1145 MIPS32 architecture. Most modern embedded systems with a 32-bit
1146 MIPS processor are based on a MIPS32 processor. If you know the
1147 specific type of processor in your system, choose those that one
1148 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1150 config CPU_MIPS64_R1
1151 bool "MIPS64 Release 1"
1152 depends on SYS_HAS_CPU_MIPS64_R1
1153 select CPU_HAS_PREFETCH
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_64BIT_KERNEL
1156 select CPU_SUPPORTS_HIGHMEM
1157 select CPU_SUPPORTS_HUGEPAGES
1159 Choose this option to build a kernel for release 1 or later of the
1160 MIPS64 architecture. Many modern embedded systems with a 64-bit
1161 MIPS processor are based on a MIPS64 processor. If you know the
1162 specific type of processor in your system, choose those that one
1163 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1164 Release 2 of the MIPS64 architecture is available since several
1165 years so chances are you even have a MIPS64 Release 2 processor
1166 in which case you should choose CPU_MIPS64_R2 instead for better
1169 config CPU_MIPS64_R2
1170 bool "MIPS64 Release 2"
1171 depends on SYS_HAS_CPU_MIPS64_R2
1172 select CPU_HAS_PREFETCH
1173 select CPU_SUPPORTS_32BIT_KERNEL
1174 select CPU_SUPPORTS_64BIT_KERNEL
1175 select CPU_SUPPORTS_HIGHMEM
1176 select CPU_SUPPORTS_HUGEPAGES
1178 Choose this option to build a kernel for release 2 or later of the
1179 MIPS64 architecture. Many modern embedded systems with a 64-bit
1180 MIPS processor are based on a MIPS64 processor. If you know the
1181 specific type of processor in your system, choose those that one
1182 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1186 depends on SYS_HAS_CPU_R3000
1188 select CPU_SUPPORTS_32BIT_KERNEL
1189 select CPU_SUPPORTS_HIGHMEM
1191 Please make sure to pick the right CPU type. Linux/MIPS is not
1192 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1193 *not* work on R4000 machines and vice versa. However, since most
1194 of the supported machines have an R4000 (or similar) CPU, R4x00
1195 might be a safe bet. If the resulting kernel does not work,
1196 try to recompile with R3000.
1200 depends on SYS_HAS_CPU_TX39XX
1201 select CPU_SUPPORTS_32BIT_KERNEL
1205 depends on SYS_HAS_CPU_VR41XX
1206 select CPU_SUPPORTS_32BIT_KERNEL
1207 select CPU_SUPPORTS_64BIT_KERNEL
1209 The options selects support for the NEC VR4100 series of processors.
1210 Only choose this option if you have one of these processors as a
1211 kernel built with this option will not run on any other type of
1212 processor or vice versa.
1216 depends on SYS_HAS_CPU_R4300
1217 select CPU_SUPPORTS_32BIT_KERNEL
1218 select CPU_SUPPORTS_64BIT_KERNEL
1220 MIPS Technologies R4300-series processors.
1224 depends on SYS_HAS_CPU_R4X00
1225 select CPU_SUPPORTS_32BIT_KERNEL
1226 select CPU_SUPPORTS_64BIT_KERNEL
1228 MIPS Technologies R4000-series processors other than 4300, including
1229 the R4000, R4400, R4600, and 4700.
1233 depends on SYS_HAS_CPU_TX49XX
1234 select CPU_HAS_PREFETCH
1235 select CPU_SUPPORTS_32BIT_KERNEL
1236 select CPU_SUPPORTS_64BIT_KERNEL
1240 depends on SYS_HAS_CPU_R5000
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1244 MIPS Technologies R5000-series processors other than the Nevada.
1248 depends on SYS_HAS_CPU_R5432
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1254 depends on SYS_HAS_CPU_R5500
1255 select CPU_SUPPORTS_32BIT_KERNEL
1256 select CPU_SUPPORTS_64BIT_KERNEL
1257 select CPU_SUPPORTS_HUGEPAGES
1259 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1264 depends on EXPERIMENTAL
1265 depends on SYS_HAS_CPU_R6000
1266 select CPU_SUPPORTS_32BIT_KERNEL
1268 MIPS Technologies R6000 and R6000A series processors. Note these
1269 processors are extremely rare and the support for them is incomplete.
1273 depends on SYS_HAS_CPU_NEVADA
1274 select CPU_SUPPORTS_32BIT_KERNEL
1275 select CPU_SUPPORTS_64BIT_KERNEL
1277 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1281 depends on EXPERIMENTAL
1282 depends on SYS_HAS_CPU_R8000
1283 select CPU_HAS_PREFETCH
1284 select CPU_SUPPORTS_64BIT_KERNEL
1286 MIPS Technologies R8000 processors. Note these processors are
1287 uncommon and the support for them is incomplete.
1291 depends on SYS_HAS_CPU_R10000
1292 select CPU_HAS_PREFETCH
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select CPU_SUPPORTS_HIGHMEM
1297 MIPS Technologies R10000-series processors.
1301 depends on SYS_HAS_CPU_RM7000
1302 select CPU_HAS_PREFETCH
1303 select CPU_SUPPORTS_32BIT_KERNEL
1304 select CPU_SUPPORTS_64BIT_KERNEL
1305 select CPU_SUPPORTS_HIGHMEM
1309 depends on SYS_HAS_CPU_RM9000
1310 select CPU_HAS_PREFETCH
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1313 select CPU_SUPPORTS_HIGHMEM
1314 select WEAK_ORDERING
1318 depends on SYS_HAS_CPU_SB1
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1321 select CPU_SUPPORTS_HIGHMEM
1322 select WEAK_ORDERING
1324 config CPU_CAVIUM_OCTEON
1325 bool "Cavium Octeon processor"
1326 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1328 select IRQ_CPU_OCTEON
1329 select CPU_HAS_PREFETCH
1330 select CPU_SUPPORTS_64BIT_KERNEL
1331 select SYS_SUPPORTS_SMP
1332 select NR_CPUS_DEFAULT_16
1333 select WEAK_ORDERING
1334 select CPU_SUPPORTS_HIGHMEM
1335 select CPU_SUPPORTS_HUGEPAGES
1337 The Cavium Octeon processor is a highly integrated chip containing
1338 many ethernet hardware widgets for networking tasks. The processor
1339 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1340 Full details can be found at http://www.caviumnetworks.com.
1345 config CPU_NOP_WORKAROUNDS
1348 config CPU_JUMP_WORKAROUNDS
1351 config CPU_LOONGSON2F_WORKAROUNDS
1352 bool "Loongson 2F Workarounds"
1354 select CPU_NOP_WORKAROUNDS
1355 select CPU_JUMP_WORKAROUNDS
1357 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1358 require workarounds. Without workarounds the system may hang
1359 unexpectedly. For more information please refer to the gas
1360 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1362 Loongson 2F03 and later have fixed these issues and no workarounds
1363 are needed. The workarounds have no significant side effect on them
1364 but may decrease the performance of the system so this option should
1365 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1368 If unsure, please say Y.
1369 endif # CPU_LOONGSON2F
1371 config SYS_SUPPORTS_ZBOOT
1373 select HAVE_KERNEL_GZIP
1374 select HAVE_KERNEL_BZIP2
1375 select HAVE_KERNEL_LZMA
1376 select HAVE_KERNEL_LZO
1378 config SYS_SUPPORTS_ZBOOT_UART16550
1380 select SYS_SUPPORTS_ZBOOT
1382 config CPU_LOONGSON2
1384 select CPU_SUPPORTS_32BIT_KERNEL
1385 select CPU_SUPPORTS_64BIT_KERNEL
1386 select CPU_SUPPORTS_HIGHMEM
1388 config SYS_HAS_CPU_LOONGSON2E
1391 config SYS_HAS_CPU_LOONGSON2F
1393 select CPU_SUPPORTS_CPUFREQ
1394 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1395 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1397 config SYS_HAS_CPU_MIPS32_R1
1400 config SYS_HAS_CPU_MIPS32_R2
1403 config SYS_HAS_CPU_MIPS64_R1
1406 config SYS_HAS_CPU_MIPS64_R2
1409 config SYS_HAS_CPU_R3000
1412 config SYS_HAS_CPU_TX39XX
1415 config SYS_HAS_CPU_VR41XX
1418 config SYS_HAS_CPU_R4300
1421 config SYS_HAS_CPU_R4X00
1424 config SYS_HAS_CPU_TX49XX
1427 config SYS_HAS_CPU_R5000
1430 config SYS_HAS_CPU_R5432
1433 config SYS_HAS_CPU_R5500
1436 config SYS_HAS_CPU_R6000
1439 config SYS_HAS_CPU_NEVADA
1442 config SYS_HAS_CPU_R8000
1445 config SYS_HAS_CPU_R10000
1448 config SYS_HAS_CPU_RM7000
1451 config SYS_HAS_CPU_RM9000
1454 config SYS_HAS_CPU_SB1
1457 config SYS_HAS_CPU_CAVIUM_OCTEON
1461 # CPU may reorder R->R, R->W, W->R, W->W
1462 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1464 config WEAK_ORDERING
1468 # CPU may reorder reads and writes beyond LL/SC
1469 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1471 config WEAK_REORDERING_BEYOND_LLSC
1476 # These two indicate any level of the MIPS32 and MIPS64 architecture
1480 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1484 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1487 # These two indicate the revision of the architecture, either Release 1 or Release 2
1491 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1495 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1497 config SYS_SUPPORTS_32BIT_KERNEL
1499 config SYS_SUPPORTS_64BIT_KERNEL
1501 config CPU_SUPPORTS_32BIT_KERNEL
1503 config CPU_SUPPORTS_64BIT_KERNEL
1505 config CPU_SUPPORTS_CPUFREQ
1507 config CPU_SUPPORTS_ADDRWINCFG
1509 config CPU_SUPPORTS_HUGEPAGES
1511 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1513 config MIPS_PGD_C0_CONTEXT
1515 default y if 64BIT && CPU_MIPSR2
1518 # Set to y for ptrace access to watch registers.
1520 config HARDWARE_WATCHPOINTS
1522 default y if CPU_MIPSR1 || CPU_MIPSR2
1528 prompt "Kernel code model"
1530 You should only select this option if you have a workload that
1531 actually benefits from 64-bit processing or if your machine has
1532 large memory. You will only be presented a single option in this
1533 menu if your system does not support both 32-bit and 64-bit kernels.
1536 bool "32-bit kernel"
1537 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1540 Select this option if you want to build a 32-bit kernel.
1542 bool "64-bit kernel"
1543 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1544 select HAVE_SYSCALL_WRAPPERS
1546 Select this option if you want to build a 64-bit kernel.
1551 prompt "Kernel page size"
1552 default PAGE_SIZE_4KB
1554 config PAGE_SIZE_4KB
1556 depends on !CPU_LOONGSON2
1558 This option select the standard 4kB Linux page size. On some
1559 R3000-family processors this is the only available page size. Using
1560 4kB page size will minimize memory consumption and is therefore
1561 recommended for low memory systems.
1563 config PAGE_SIZE_8KB
1565 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1567 Using 8kB page size will result in higher performance kernel at
1568 the price of higher memory consumption. This option is available
1569 only on R8000 and cnMIPS processors. Note that you will need a
1570 suitable Linux distribution to support this.
1572 config PAGE_SIZE_16KB
1574 depends on !CPU_R3000 && !CPU_TX39XX
1576 Using 16kB page size will result in higher performance kernel at
1577 the price of higher memory consumption. This option is available on
1578 all non-R3000 family processors. Note that you will need a suitable
1579 Linux distribution to support this.
1581 config PAGE_SIZE_32KB
1583 depends on CPU_CAVIUM_OCTEON
1585 Using 32kB page size will result in higher performance kernel at
1586 the price of higher memory consumption. This option is available
1587 only on cnMIPS cores. Note that you will need a suitable Linux
1588 distribution to support this.
1590 config PAGE_SIZE_64KB
1592 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1594 Using 64kB page size will result in higher performance kernel at
1595 the price of higher memory consumption. This option is available on
1596 all non-R3000 family processor. Not that at the time of this
1597 writing this option is still high experimental.
1604 config IP22_CPU_SCACHE
1609 # Support for a MIPS32 / MIPS64 style S-caches
1611 config MIPS_CPU_SCACHE
1615 config R5000_CPU_SCACHE
1619 config RM7000_CPU_SCACHE
1623 config SIBYTE_DMA_PAGEOPS
1624 bool "Use DMA to clear/copy pages"
1627 Instead of using the CPU to zero and copy pages, use a Data Mover
1628 channel. These DMA channels are otherwise unused by the standard
1629 SiByte Linux port. Seems to give a small performance benefit.
1631 config CPU_HAS_PREFETCH
1635 prompt "MIPS MT options"
1637 config MIPS_MT_DISABLED
1638 bool "Disable multithreading support."
1640 Use this option if your workload can't take advantage of
1641 MIPS hardware multithreading support. On systems that don't have
1642 the option of an MT-enabled processor this option will be the only
1643 option in this menu.
1646 bool "Use 1 TC on each available VPE for SMP"
1647 depends on SYS_SUPPORTS_MULTITHREADING
1648 select CPU_MIPSR2_IRQ_VI
1649 select CPU_MIPSR2_IRQ_EI
1651 select NR_CPUS_DEFAULT_2
1653 select SYS_SUPPORTS_SCHED_SMT if SMP
1654 select SYS_SUPPORTS_SMP
1657 This is a kernel model which is known a VSMP but lately has been
1658 marketesed into SMVP.
1659 Virtual SMP uses the processor's VPEs to implement virtual
1660 processors. In currently available configuration of the 34K processor
1661 this allows for a dual processor. Both processors will share the same
1662 primary caches; each will obtain the half of the TLB for it's own
1663 exclusive use. For a layman this model can be described as similar to
1664 what Intel calls Hyperthreading.
1666 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1669 bool "SMTC: Use all TCs on all VPEs for SMP"
1670 depends on CPU_MIPS32_R2
1671 #depends on CPU_MIPS64_R2 # once there is hardware ...
1672 depends on SYS_SUPPORTS_MULTITHREADING
1673 select CPU_MIPSR2_IRQ_VI
1674 select CPU_MIPSR2_IRQ_EI
1676 select NR_CPUS_DEFAULT_8
1678 select SYS_SUPPORTS_SMP
1681 This is a kernel model which is known a SMTC or lately has been
1682 marketesed into SMVP.
1683 is presenting the available TC's of the core as processors to Linux.
1684 On currently available 34K processors this means a Linux system will
1685 see up to 5 processors. The implementation of the SMTC kernel differs
1686 significantly from VSMP and cannot efficiently coexist in the same
1687 kernel binary so the choice between VSMP and SMTC is a compile time
1690 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1698 bool "SMT (multithreading) scheduler support"
1699 depends on SYS_SUPPORTS_SCHED_SMT
1702 SMT scheduler support improves the CPU scheduler's decision making
1703 when dealing with MIPS MT enabled cores at a cost of slightly
1704 increased overhead in some places. If unsure say N here.
1706 config SYS_SUPPORTS_SCHED_SMT
1710 config SYS_SUPPORTS_MULTITHREADING
1713 config MIPS_MT_FPAFF
1714 bool "Dynamic FPU affinity for FP-intensive threads"
1716 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1718 config MIPS_VPE_LOADER
1719 bool "VPE loader support."
1720 depends on SYS_SUPPORTS_MULTITHREADING
1721 select CPU_MIPSR2_IRQ_VI
1722 select CPU_MIPSR2_IRQ_EI
1725 Includes a loader for loading an elf relocatable object
1726 onto another VPE and running it.
1728 config MIPS_MT_SMTC_IM_BACKSTOP
1729 bool "Use per-TC register bits as backstop for inhibited IM bits"
1730 depends on MIPS_MT_SMTC
1733 To support multiple TC microthreads acting as "CPUs" within
1734 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1735 during interrupt handling. To support legacy drivers and interrupt
1736 controller management code, SMTC has a "backstop" to track and
1737 if necessary restore the interrupt mask. This has some performance
1738 impact on interrupt service overhead.
1740 config MIPS_MT_SMTC_IRQAFF
1741 bool "Support IRQ affinity API"
1742 depends on MIPS_MT_SMTC
1745 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1746 for SMTC Linux kernel. Requires platform support, of which
1747 an example can be found in the MIPS kernel i8259 and Malta
1748 platform code. Adds some overhead to interrupt dispatch, and
1749 should be used only if you know what you are doing.
1751 config MIPS_VPE_LOADER_TOM
1752 bool "Load VPE program into memory hidden from linux"
1753 depends on MIPS_VPE_LOADER
1756 The loader can use memory that is present but has been hidden from
1757 Linux using the kernel command line option "mem=xxMB". It's up to
1758 you to ensure the amount you put in the option and the space your
1759 program requires is less or equal to the amount physically present.
1761 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1762 config MIPS_VPE_APSP_API
1763 bool "Enable support for AP/SP API (RTLX)"
1764 depends on MIPS_VPE_LOADER
1767 config MIPS_APSP_KSPD
1769 depends on MIPS_VPE_APSP_API
1772 KSPD is a kernel daemon that accepts syscall requests from the SP
1773 side, actions them and returns the results. It also handles the
1774 "exit" syscall notifying other kernel modules the SP program is
1775 exiting. You probably want to say yes here.
1778 bool "MIPS CMP framework support"
1779 depends on SYS_SUPPORTS_MIPS_CMP
1781 select SYS_SUPPORTS_SMP
1782 select SYS_SUPPORTS_SCHED_SMT if SMP
1783 select WEAK_ORDERING
1786 This is a placeholder option for the GCMP work. It will need to
1787 be handled differently...
1789 config SB1_PASS_1_WORKAROUNDS
1791 depends on CPU_SB1_PASS_1
1794 config SB1_PASS_2_WORKAROUNDS
1796 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1799 config SB1_PASS_2_1_WORKAROUNDS
1801 depends on CPU_SB1 && CPU_SB1_PASS_2
1804 config 64BIT_PHYS_ADDR
1807 config ARCH_PHYS_ADDR_T_64BIT
1808 def_bool 64BIT_PHYS_ADDR
1810 config CPU_HAS_SMARTMIPS
1811 depends on SYS_SUPPORTS_SMARTMIPS
1812 bool "Support for the SmartMIPS ASE"
1814 SmartMIPS is a extension of the MIPS32 architecture aimed at
1815 increased security at both hardware and software level for
1816 smartcards. Enabling this option will allow proper use of the
1817 SmartMIPS instructions by Linux applications. However a kernel with
1818 this option will not work on a MIPS core without SmartMIPS core. If
1819 you don't know you probably don't have SmartMIPS and should say N
1826 # Vectored interrupt mode is an R2 feature
1828 config CPU_MIPSR2_IRQ_VI
1832 # Extended interrupt mode is an R2 feature
1834 config CPU_MIPSR2_IRQ_EI
1839 depends on !CPU_R3000
1842 config GENERIC_CLOCKEVENTS_BROADCAST
1848 config CPU_DADDI_WORKAROUNDS
1851 config CPU_R4000_WORKAROUNDS
1853 select CPU_R4400_WORKAROUNDS
1855 config CPU_R4400_WORKAROUNDS
1859 # Use the generic interrupt handling code in kernel/irq/:
1861 config GENERIC_HARDIRQS
1865 config GENERIC_IRQ_PROBE
1873 # - Highmem only makes sense for the 32-bit kernel.
1874 # - The current highmem code will only work properly on physically indexed
1875 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1876 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1877 # moment we protect the user and offer the highmem option only on machines
1878 # where it's known to be safe. This will not offer highmem on a few systems
1879 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1880 # indexed CPUs but we're playing safe.
1881 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1882 # know they might have memory configurations that could make use of highmem
1886 bool "High Memory Support"
1887 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1889 config CPU_SUPPORTS_HIGHMEM
1892 config SYS_SUPPORTS_HIGHMEM
1895 config SYS_SUPPORTS_SMARTMIPS
1898 config ARCH_FLATMEM_ENABLE
1900 depends on !NUMA && !CPU_LOONGSON2
1902 config ARCH_DISCONTIGMEM_ENABLE
1904 default y if SGI_IP27
1906 Say Y to support efficient handling of discontiguous physical memory,
1907 for architectures which are either NUMA (Non-Uniform Memory Access)
1908 or have huge holes in the physical address space for other reasons.
1909 See <file:Documentation/vm/numa> for more.
1911 config ARCH_POPULATES_NODE_MAP
1914 config ARCH_SPARSEMEM_ENABLE
1916 select SPARSEMEM_STATIC
1920 depends on SYS_SUPPORTS_NUMA
1922 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1923 Access). This option improves performance on systems with more
1924 than two nodes; on two node systems it is generally better to
1925 leave it disabled; on single node systems disable this option
1928 config SYS_SUPPORTS_NUMA
1934 depends on NEED_MULTIPLE_NODES
1939 bool "Multi-Processing support"
1940 depends on SYS_SUPPORTS_SMP
1942 select USE_GENERIC_SMP_HELPERS
1944 This enables support for systems with more than one CPU. If you have
1945 a system with only one CPU, like most personal computers, say N. If
1946 you have a system with more than one CPU, say Y.
1948 If you say N here, the kernel will run on single and multiprocessor
1949 machines, but will use only one CPU of a multiprocessor machine. If
1950 you say Y here, the kernel will run on many, but not all,
1951 singleprocessor machines. On a singleprocessor machine, the kernel
1952 will run faster if you say N here.
1954 People using multiprocessor machines who say Y here should also say
1955 Y to "Enhanced Real Time Clock Support", below.
1957 See also the SMP-HOWTO available at
1958 <http://www.tldp.org/docs.html#howto>.
1960 If you don't know what to do here, say N.
1965 config SYS_SUPPORTS_MIPS_CMP
1968 config SYS_SUPPORTS_SMP
1971 config NR_CPUS_DEFAULT_1
1974 config NR_CPUS_DEFAULT_2
1977 config NR_CPUS_DEFAULT_4
1980 config NR_CPUS_DEFAULT_8
1983 config NR_CPUS_DEFAULT_16
1986 config NR_CPUS_DEFAULT_32
1989 config NR_CPUS_DEFAULT_64
1993 int "Maximum number of CPUs (2-64)"
1994 range 1 64 if NR_CPUS_DEFAULT_1
1996 default "1" if NR_CPUS_DEFAULT_1
1997 default "2" if NR_CPUS_DEFAULT_2
1998 default "4" if NR_CPUS_DEFAULT_4
1999 default "8" if NR_CPUS_DEFAULT_8
2000 default "16" if NR_CPUS_DEFAULT_16
2001 default "32" if NR_CPUS_DEFAULT_32
2002 default "64" if NR_CPUS_DEFAULT_64
2004 This allows you to specify the maximum number of CPUs which this
2005 kernel will support. The maximum supported value is 32 for 32-bit
2006 kernel and 64 for 64-bit kernels; the minimum value which makes
2007 sense is 1 for Qemu (useful only for kernel debugging purposes)
2008 and 2 for all others.
2010 This is purely to save memory - each supported CPU adds
2011 approximately eight kilobytes to the kernel image. For best
2012 performance should round up your number of processors to the next
2015 source "kernel/time/Kconfig"
2018 # Timer Interrupt Frequency Configuration
2022 prompt "Timer frequency"
2025 Allows the configuration of the timer frequency.
2028 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2031 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2034 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2037 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2040 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2043 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2046 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2050 config SYS_SUPPORTS_48HZ
2053 config SYS_SUPPORTS_100HZ
2056 config SYS_SUPPORTS_128HZ
2059 config SYS_SUPPORTS_250HZ
2062 config SYS_SUPPORTS_256HZ
2065 config SYS_SUPPORTS_1000HZ
2068 config SYS_SUPPORTS_1024HZ
2071 config SYS_SUPPORTS_ARBIT_HZ
2073 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2074 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2075 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2076 !SYS_SUPPORTS_1024HZ
2081 default 100 if HZ_100
2082 default 128 if HZ_128
2083 default 250 if HZ_250
2084 default 256 if HZ_256
2085 default 1000 if HZ_1000
2086 default 1024 if HZ_1024
2088 source "kernel/Kconfig.preempt"
2090 config MIPS_INSANE_LARGE
2091 bool "Support for large 64-bit configurations"
2092 depends on CPU_R10000 && 64BIT
2094 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2095 previous 64-bit processors which only supported 40 bit / 1TB. If you
2096 need processes of more than 1TB virtual address space, say Y here.
2097 This will result in additional memory usage, so it is not
2098 recommended for normal users.
2101 bool "Kexec system call (EXPERIMENTAL)"
2102 depends on EXPERIMENTAL
2104 kexec is a system call that implements the ability to shutdown your
2105 current kernel, and to start another kernel. It is like a reboot
2106 but it is independent of the system firmware. And like a reboot
2107 you can start any kernel with it, not just Linux.
2109 The name comes from the similarity to the exec system call.
2111 It is an ongoing process to be certain the hardware in a machine
2112 is properly shutdown, so do not be surprised if this code does not
2113 initially work for you. It may help to enable device hotplugging
2114 support. As of this writing the exact hardware interface is
2115 strongly in flux, so no good recommendation can be made.
2118 bool "Enable seccomp to safely compute untrusted bytecode"
2122 This kernel feature is useful for number crunching applications
2123 that may need to compute untrusted bytecode during their
2124 execution. By using pipes or other transports made available to
2125 the process as file descriptors supporting the read/write
2126 syscalls, it's possible to isolate those applications in
2127 their own address space using seccomp. Once seccomp is
2128 enabled via /proc/<pid>/seccomp, it cannot be disabled
2129 and the task is only allowed to execute a few safe syscalls
2130 defined by each seccomp mode.
2132 If unsure, say Y. Only embedded should say N here.
2135 bool "Flattened Device Tree support"
2139 Include support for flattened device tree machine descriptions.
2143 config LOCKDEP_SUPPORT
2147 config STACKTRACE_SUPPORT
2151 source "init/Kconfig"
2153 source "kernel/Kconfig.freezer"
2155 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2163 bool "Support for PCI controller"
2164 depends on HW_HAS_PCI
2167 Find out whether you have a PCI motherboard. PCI is the name of a
2168 bus system, i.e. the way the CPU talks to the other stuff inside
2169 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2175 source "drivers/pci/Kconfig"
2178 # ISA support is now enabled via select. Too many systems still have the one
2179 # or other ISA chip on the board that users don't know about so don't expect
2180 # users to choose the right thing ...
2187 depends on HW_HAS_EISA
2189 select GENERIC_ISA_DMA
2191 The Extended Industry Standard Architecture (EISA) bus was
2192 developed as an open alternative to the IBM MicroChannel bus.
2194 The EISA bus provided some of the features of the IBM MicroChannel
2195 bus while maintaining backward compatibility with cards made for
2196 the older ISA bus. The EISA bus saw limited use between 1988 and
2197 1995 when it was made obsolete by the PCI bus.
2199 Say Y here if you are building a kernel for an EISA-based machine.
2203 source "drivers/eisa/Kconfig"
2206 bool "TURBOchannel support"
2207 depends on MACH_DECSTATION
2209 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2210 processors. TURBOchannel programming specifications are available
2212 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2214 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2215 Linux driver support status is documented at:
2216 <http://www.linux-mips.org/wiki/DECstation>
2219 # bool "Access.Bus support"
2228 select MIPS_EXTERNAL_TIMER
2233 source "drivers/pcmcia/Kconfig"
2235 source "drivers/pci/hotplug/Kconfig"
2239 menu "Executable file formats"
2241 source "fs/Kconfig.binfmt"
2246 config MIPS32_COMPAT
2247 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2250 Select this option if you want Linux/MIPS 32-bit binary
2251 compatibility. Since all software available for Linux/MIPS is
2252 currently 32-bit you should say Y here.
2256 depends on MIPS32_COMPAT
2259 config SYSVIPC_COMPAT
2261 depends on COMPAT && SYSVIPC
2265 bool "Kernel support for o32 binaries"
2266 depends on MIPS32_COMPAT
2268 Select this option if you want to run o32 binaries. These are pure
2269 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2270 existing binaries are in this format.
2275 bool "Kernel support for n32 binaries"
2276 depends on MIPS32_COMPAT
2278 Select this option if you want to run n32 binaries. These are
2279 64-bit binaries using 32-bit quantities for addressing and certain
2280 data that would normally be 64-bit. They are used in special
2287 default y if MIPS32_O32 || MIPS32_N32
2291 menu "Power management options"
2293 config ARCH_HIBERNATION_POSSIBLE
2295 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2297 config ARCH_SUSPEND_POSSIBLE
2299 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2301 source "kernel/power/Kconfig"
2305 source "arch/mips/kernel/cpufreq/Kconfig"
2307 source "net/Kconfig"
2309 source "drivers/Kconfig"
2313 source "arch/mips/Kconfig.debug"
2315 source "security/Kconfig"
2317 source "crypto/Kconfig"
2319 source "lib/Kconfig"