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
17 mainmenu "Linux/MIPS Kernel Configuration"
19 menu "Machine selection"
29 bool "Alchemy processor based machines"
30 select 64BIT_PHYS_ADDR
34 select SYS_HAS_CPU_MIPS32_R1
35 select SYS_SUPPORTS_32BIT_KERNEL
36 select SYS_SUPPORTS_APM_EMULATION
38 select ARCH_WANT_OPTIONAL_GPIOLIB
39 select SYS_SUPPORTS_ZBOOT
42 bool "Texas Instruments AR7"
44 select DMA_NONCOHERENT
50 select SYS_HAS_CPU_MIPS32_R1
51 select SYS_HAS_EARLY_PRINTK
52 select SYS_SUPPORTS_32BIT_KERNEL
53 select SYS_SUPPORTS_LITTLE_ENDIAN
54 select SYS_SUPPORTS_ZBOOT_UART16550
55 select ARCH_REQUIRE_GPIOLIB
59 Support for the Texas Instruments AR7 System-on-a-Chip
60 family: TNETD7100, 7200 and 7300.
63 bool "Broadcom BCM47XX based boards"
66 select DMA_NONCOHERENT
69 select SYS_HAS_CPU_MIPS32_R1
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_LITTLE_ENDIAN
73 select SSB_DRIVER_MIPS
74 select SSB_DRIVER_EXTIF
76 select SSB_B43_PCI_BRIDGE if PCI
77 select SSB_PCICORE_HOSTMODE if PCI
79 select SYS_HAS_EARLY_PRINTK
82 Support for BCM47XX based boards
85 bool "Broadcom BCM63XX based boards"
88 select DMA_NONCOHERENT
90 select SYS_HAS_CPU_MIPS32_R1
91 select SYS_SUPPORTS_32BIT_KERNEL
92 select SYS_SUPPORTS_BIG_ENDIAN
93 select SYS_HAS_EARLY_PRINTK
95 select ARCH_REQUIRE_GPIOLIB
97 Support for BCM63XX based boards
104 select DMA_NONCOHERENT
110 select PCI_GT64XXX_PCI0
112 select SYS_HAS_CPU_NEVADA
113 select SYS_HAS_EARLY_PRINTK
114 select SYS_SUPPORTS_32BIT_KERNEL
115 select SYS_SUPPORTS_64BIT_KERNEL
116 select SYS_SUPPORTS_LITTLE_ENDIAN
118 config MACH_DECSTATION
125 select CPU_DADDI_WORKAROUNDS if 64BIT
126 select CPU_R4000_WORKAROUNDS if 64BIT
127 select CPU_R4400_WORKAROUNDS if 64BIT
128 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_R3000
132 select SYS_HAS_CPU_R4X00
133 select SYS_SUPPORTS_32BIT_KERNEL
134 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
135 select SYS_SUPPORTS_LITTLE_ENDIAN
136 select SYS_SUPPORTS_128HZ
137 select SYS_SUPPORTS_256HZ
138 select SYS_SUPPORTS_1024HZ
140 This enables support for DEC's MIPS based workstations. For details
141 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
142 DECstation porting pages on <http://decstation.unix-ag.org/>.
144 If you have one of the following DECstation Models you definitely
145 want to choose R4xx0 for the CPU Type:
152 otherwise choose R3000.
155 bool "Jazz family of machines"
158 select ARCH_MAY_HAVE_PC_FDC
161 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
162 select GENERIC_ISA_DMA
167 select SYS_HAS_CPU_R4X00
168 select SYS_SUPPORTS_32BIT_KERNEL
169 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
170 select SYS_SUPPORTS_100HZ
172 This a family of machines based on the MIPS R4030 chipset which was
173 used by several vendors to build RISC/os and Windows NT workstations.
174 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
175 Olivetti M700-10 workstations.
178 bool "Ingenic JZ4740 based machines"
179 select SYS_HAS_CPU_MIPS32_R1
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_SUPPORTS_LITTLE_ENDIAN
182 select DMA_NONCOHERENT
185 select ARCH_REQUIRE_GPIOLIB
186 select SYS_HAS_EARLY_PRINTK
190 bool "LASAT Networks platforms"
193 select DMA_NONCOHERENT
194 select SYS_HAS_EARLY_PRINTK
197 select PCI_GT64XXX_PCI0
199 select R5000_CPU_SCACHE
200 select SYS_HAS_CPU_R5000
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
203 select SYS_SUPPORTS_LITTLE_ENDIAN
206 bool "Loongson family of machines"
207 select SYS_SUPPORTS_ZBOOT
209 This enables the support of Loongson family of machines.
211 Loongson is a family of general-purpose MIPS-compatible CPUs.
212 developed at Institute of Computing Technology (ICT),
213 Chinese Academy of Sciences (CAS) in the People's Republic
214 of China. The chief architect is Professor Weiwu Hu.
217 bool "MIPS Malta board"
218 select ARCH_MAY_HAVE_PC_FDC
223 select DMA_NONCOHERENT
224 select GENERIC_ISA_DMA
230 select MIPS_BOARDS_GEN
232 select MIPS_CPU_SCACHE
233 select PCI_GT64XXX_PCI0
236 select SYS_HAS_CPU_MIPS32_R1
237 select SYS_HAS_CPU_MIPS32_R2
238 select SYS_HAS_CPU_MIPS64_R1
239 select SYS_HAS_CPU_NEVADA
240 select SYS_HAS_CPU_RM7000
241 select SYS_HAS_EARLY_PRINTK
242 select SYS_SUPPORTS_32BIT_KERNEL
243 select SYS_SUPPORTS_64BIT_KERNEL
244 select SYS_SUPPORTS_BIG_ENDIAN
245 select SYS_SUPPORTS_LITTLE_ENDIAN
246 select SYS_SUPPORTS_MIPS_CMP
247 select SYS_SUPPORTS_MULTITHREADING
248 select SYS_SUPPORTS_SMARTMIPS
249 select SYS_SUPPORTS_ZBOOT
251 This enables support for the MIPS Technologies Malta evaluation
255 bool 'MIPS simulator (MIPSsim)'
258 select DMA_NONCOHERENT
259 select SYS_HAS_EARLY_PRINTK
262 select SYS_HAS_CPU_MIPS32_R1
263 select SYS_HAS_CPU_MIPS32_R2
264 select SYS_HAS_EARLY_PRINTK
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_BIG_ENDIAN
267 select SYS_SUPPORTS_MULTITHREADING
268 select SYS_SUPPORTS_LITTLE_ENDIAN
270 This option enables support for MIPS Technologies MIPSsim software
274 bool "NEC EMMA2RH Mark-eins board"
278 This enables support for the NEC Electronics Mark-eins boards.
281 bool "NEC VR4100 series based machines"
284 select SYS_HAS_CPU_VR41XX
285 select ARCH_REQUIRE_GPIOLIB
288 bool "NXP STB220 board"
291 Support for NXP Semiconductors STB220 Development Board.
298 Support for NXP Semiconductors STB225 Development Board.
301 bool "NXP PNX8550 based JBS board"
303 select SYS_SUPPORTS_LITTLE_ENDIAN
305 config PNX8550_STB810
306 bool "NXP PNX8550 based STB810 board"
308 select SYS_SUPPORTS_LITTLE_ENDIAN
311 bool "PMC-Sierra MSP chipsets"
312 depends on EXPERIMENTAL
313 select DMA_NONCOHERENT
315 select NO_EXCEPT_FILL
317 select SYS_HAS_CPU_MIPS32_R1
318 select SYS_HAS_CPU_MIPS32_R2
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_BIG_ENDIAN
323 select SERIAL_8250_CONSOLE
325 This adds support for the PMC-Sierra family of Multi-Service
326 Processor System-On-A-Chips. These parts include a number
327 of integrated peripherals, interfaces and DSPs in addition to
328 a variety of MIPS cores.
331 bool "PMC-Sierra Yosemite eval board"
340 select SYS_HAS_CPU_RM9000
341 select SYS_HAS_EARLY_PRINTK
342 select SYS_SUPPORTS_32BIT_KERNEL
343 select SYS_SUPPORTS_64BIT_KERNEL
344 select SYS_SUPPORTS_BIG_ENDIAN
345 select SYS_SUPPORTS_HIGHMEM
346 select SYS_SUPPORTS_SMP
348 Yosemite is an evaluation board for the RM9000x2 processor
349 manufactured by PMC-Sierra.
355 select CPU_MIPSR2_IRQ_VI
356 select CPU_MIPSR2_IRQ_EI
358 select DMA_NONCOHERENT
360 select SYS_HAS_EARLY_PRINTK
361 select SYS_HAS_CPU_MIPS32_R2
362 select SYS_SUPPORTS_32BIT_KERNEL
363 select SYS_SUPPORTS_BIG_ENDIAN
364 select SYS_SUPPORTS_HIGHMEM
365 select USB_OHCI_LITTLE_ENDIAN
367 This enables support for the Cisco PowerTV Platform.
370 bool "SGI IP22 (Indy/Indigo2)"
376 select DEFAULT_SGI_PARTITION
377 select DMA_NONCOHERENT
381 select IP22_CPU_SCACHE
383 select GENERIC_ISA_DMA_SUPPORT_BROKEN
385 select SGI_HAS_INDYDOG
391 select SYS_HAS_CPU_R4X00
392 select SYS_HAS_CPU_R5000
394 # Disable EARLY_PRINTK for now since it leads to overwritten prom
395 # memory during early boot on some machines.
397 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
398 # for a more details discussion
400 # select SYS_HAS_EARLY_PRINTK
401 select SYS_SUPPORTS_32BIT_KERNEL
402 select SYS_SUPPORTS_64BIT_KERNEL
403 select SYS_SUPPORTS_BIG_ENDIAN
405 This are the SGI Indy, Challenge S and Indigo2, as well as certain
406 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
407 that runs on these, say Y here.
410 bool "SGI IP27 (Origin200/2000)"
414 select DEFAULT_SGI_PARTITION
416 select SYS_HAS_EARLY_PRINTK
418 select NR_CPUS_DEFAULT_64
419 select SYS_HAS_CPU_R10000
420 select SYS_SUPPORTS_64BIT_KERNEL
421 select SYS_SUPPORTS_BIG_ENDIAN
422 select SYS_SUPPORTS_NUMA
423 select SYS_SUPPORTS_SMP
425 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
426 workstations. To compile a Linux kernel that runs on these, say Y
430 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
431 depends on EXPERIMENTAL
437 select DEFAULT_SGI_PARTITION
438 select DMA_NONCOHERENT
439 select GENERIC_ISA_DMA_SUPPORT_BROKEN
445 select SGI_HAS_INDYDOG
451 select SYS_HAS_CPU_R10000
453 # Disable EARLY_PRINTK for now since it leads to overwritten prom
454 # memory during early boot on some machines.
456 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
457 # for a more details discussion
459 # select SYS_HAS_EARLY_PRINTK
460 select SYS_SUPPORTS_64BIT_KERNEL
461 select SYS_SUPPORTS_BIG_ENDIAN
463 This is the SGI Indigo2 with R10000 processor. To compile a Linux
464 kernel that runs on these, say Y here.
473 select DMA_NONCOHERENT
476 select R5000_CPU_SCACHE
477 select RM7000_CPU_SCACHE
478 select SYS_HAS_CPU_R5000
479 select SYS_HAS_CPU_R10000 if BROKEN
480 select SYS_HAS_CPU_RM7000
481 select SYS_HAS_CPU_NEVADA
482 select SYS_SUPPORTS_64BIT_KERNEL
483 select SYS_SUPPORTS_BIG_ENDIAN
485 If you want this kernel to run on SGI O2 workstation, say Y here.
488 bool "Sibyte BCM91120C-CRhine"
489 depends on EXPERIMENTAL
492 select SIBYTE_BCM1120
494 select SYS_HAS_CPU_SB1
495 select SYS_SUPPORTS_BIG_ENDIAN
496 select SYS_SUPPORTS_LITTLE_ENDIAN
499 bool "Sibyte BCM91120x-Carmel"
500 depends on EXPERIMENTAL
503 select SIBYTE_BCM1120
505 select SYS_HAS_CPU_SB1
506 select SYS_SUPPORTS_BIG_ENDIAN
507 select SYS_SUPPORTS_LITTLE_ENDIAN
510 bool "Sibyte BCM91125C-CRhone"
511 depends on EXPERIMENTAL
514 select SIBYTE_BCM1125
516 select SYS_HAS_CPU_SB1
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_LITTLE_ENDIAN
522 bool "Sibyte BCM91125E-Rhone"
523 depends on EXPERIMENTAL
526 select SIBYTE_BCM1125H
528 select SYS_HAS_CPU_SB1
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_LITTLE_ENDIAN
533 bool "Sibyte BCM91250A-SWARM"
536 select HAVE_PATA_PLATFORM
537 select NR_CPUS_DEFAULT_2
540 select SYS_HAS_CPU_SB1
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select SYS_SUPPORTS_HIGHMEM
543 select SYS_SUPPORTS_LITTLE_ENDIAN
544 select ZONE_DMA32 if 64BIT
546 config SIBYTE_LITTLESUR
547 bool "Sibyte BCM91250C2-LittleSur"
548 depends on EXPERIMENTAL
551 select HAVE_PATA_PLATFORM
552 select NR_CPUS_DEFAULT_2
555 select SYS_HAS_CPU_SB1
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_HIGHMEM
558 select SYS_SUPPORTS_LITTLE_ENDIAN
560 config SIBYTE_SENTOSA
561 bool "Sibyte BCM91250E-Sentosa"
562 depends on EXPERIMENTAL
565 select NR_CPUS_DEFAULT_2
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_LITTLE_ENDIAN
573 bool "Sibyte BCM91480B-BigSur"
576 select NR_CPUS_DEFAULT_4
577 select SIBYTE_BCM1x80
579 select SYS_HAS_CPU_SB1
580 select SYS_SUPPORTS_BIG_ENDIAN
581 select SYS_SUPPORTS_HIGHMEM
582 select SYS_SUPPORTS_LITTLE_ENDIAN
583 select ZONE_DMA32 if 64BIT
586 bool "SNI RM200/300/400"
587 select ARC if CPU_LITTLE_ENDIAN
588 select ARC32 if CPU_LITTLE_ENDIAN
589 select SNIPROM if CPU_BIG_ENDIAN
590 select ARCH_MAY_HAVE_PC_FDC
594 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
595 select DMA_NONCOHERENT
596 select GENERIC_ISA_DMA
603 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
604 select SYS_HAS_CPU_R4X00
605 select SYS_HAS_CPU_R5000
606 select SYS_HAS_CPU_R10000
607 select R5000_CPU_SCACHE
608 select SYS_HAS_EARLY_PRINTK
609 select SYS_SUPPORTS_32BIT_KERNEL
610 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
611 select SYS_SUPPORTS_BIG_ENDIAN
612 select SYS_SUPPORTS_HIGHMEM
613 select SYS_SUPPORTS_LITTLE_ENDIAN
615 The SNI RM200/300/400 are MIPS-based machines manufactured by
616 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
617 Technology and now in turn merged with Fujitsu. Say Y here to
618 support this machine type.
621 bool "Toshiba TX39 series based machines"
624 bool "Toshiba TX49 series based machines"
626 config MIKROTIK_RB532
627 bool "Mikrotik RB532 boards"
630 select DMA_NONCOHERENT
633 select SYS_HAS_CPU_MIPS32_R1
634 select SYS_SUPPORTS_32BIT_KERNEL
635 select SYS_SUPPORTS_LITTLE_ENDIAN
638 select ARCH_REQUIRE_GPIOLIB
640 Support the Mikrotik(tm) RouterBoard 532 series,
641 based on the IDT RC32434 SoC.
644 bool "Wind River PPMC board"
649 select DMA_NONCOHERENT
651 select PCI_GT64XXX_PCI0
653 select SYS_HAS_CPU_MIPS32_R1
654 select SYS_HAS_CPU_MIPS32_R2
655 select SYS_HAS_CPU_MIPS64_R1
656 select SYS_HAS_CPU_NEVADA
657 select SYS_HAS_CPU_RM7000
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select SYS_SUPPORTS_LITTLE_ENDIAN
663 This enables support for the Wind River MIPS32 4KC PPMC evaluation
664 board, which is based on GT64120 bridge chip.
666 config CAVIUM_OCTEON_SIMULATOR
667 bool "Cavium Networks Octeon Simulator"
669 select 64BIT_PHYS_ADDR
671 select SYS_SUPPORTS_64BIT_KERNEL
672 select SYS_SUPPORTS_BIG_ENDIAN
673 select SYS_SUPPORTS_HIGHMEM
674 select SYS_SUPPORTS_HOTPLUG_CPU
675 select SYS_HAS_CPU_CAVIUM_OCTEON
677 The Octeon simulator is software performance model of the Cavium
678 Octeon Processor. It supports simulating Octeon processors on x86
681 config CAVIUM_OCTEON_REFERENCE_BOARD
682 bool "Cavium Networks Octeon reference board"
684 select 64BIT_PHYS_ADDR
686 select SYS_SUPPORTS_64BIT_KERNEL
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select SYS_SUPPORTS_HIGHMEM
689 select SYS_SUPPORTS_HOTPLUG_CPU
690 select SYS_HAS_EARLY_PRINTK
691 select SYS_HAS_CPU_CAVIUM_OCTEON
694 select ARCH_SUPPORTS_MSI
696 This option supports all of the Octeon reference boards from Cavium
697 Networks. It builds a kernel that dynamically determines the Octeon
698 CPU type and supports all known board reference implementations.
699 Some of the supported boards are:
706 Say Y here for most Octeon reference boards.
710 source "arch/mips/alchemy/Kconfig"
711 source "arch/mips/bcm63xx/Kconfig"
712 source "arch/mips/jazz/Kconfig"
713 source "arch/mips/jz4740/Kconfig"
714 source "arch/mips/lasat/Kconfig"
715 source "arch/mips/pmc-sierra/Kconfig"
716 source "arch/mips/powertv/Kconfig"
717 source "arch/mips/sgi-ip27/Kconfig"
718 source "arch/mips/sibyte/Kconfig"
719 source "arch/mips/txx9/Kconfig"
720 source "arch/mips/vr41xx/Kconfig"
721 source "arch/mips/cavium-octeon/Kconfig"
722 source "arch/mips/loongson/Kconfig"
726 config RWSEM_GENERIC_SPINLOCK
730 config RWSEM_XCHGADD_ALGORITHM
733 config ARCH_HAS_ILOG2_U32
737 config ARCH_HAS_ILOG2_U64
741 config ARCH_SUPPORTS_OPROFILE
743 default y if !MIPS_MT_SMTC
745 config GENERIC_FIND_NEXT_BIT
749 config GENERIC_HWEIGHT
753 config GENERIC_CALIBRATE_DELAY
757 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
888 config GENERIC_ISA_DMA_SUPPORT_BROKEN
890 select GENERIC_ISA_DMA
896 # Endianess selection. Sufficiently obscure so many users don't know what to
897 # answer,so we try hard to limit the available choices. Also the use of a
898 # choice statement should be more obvious to the user.
901 prompt "Endianess selection"
903 Some MIPS machines can be configured for either little or big endian
904 byte order. These modes require different kernels and a different
905 Linux distribution. In general there is one preferred byteorder for a
906 particular system but some systems are just as commonly used in the
907 one or the other endianness.
909 config CPU_BIG_ENDIAN
911 depends on SYS_SUPPORTS_BIG_ENDIAN
913 config CPU_LITTLE_ENDIAN
915 depends on SYS_SUPPORTS_LITTLE_ENDIAN
923 config SYS_SUPPORTS_APM_EMULATION
926 config SYS_SUPPORTS_BIG_ENDIAN
929 config SYS_SUPPORTS_LITTLE_ENDIAN
932 config SYS_SUPPORTS_HUGETLBFS
934 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
961 config IRQ_CPU_OCTEON
964 config MIPS_BOARDS_GEN
967 config PCI_GT64XXX_PCI0
970 config NO_EXCEPT_FILL
981 select DMA_NONCOHERENT
984 select SYS_HAS_CPU_R5500
985 select SYS_SUPPORTS_32BIT_KERNEL
986 select SYS_SUPPORTS_64BIT_KERNEL
987 select SYS_SUPPORTS_BIG_ENDIAN
994 select DMA_NONCOHERENT
995 select SYS_HAS_CPU_MIPS32_R2
996 select SYS_SUPPORTS_32BIT_KERNEL
997 select SYS_SUPPORTS_LITTLE_ENDIAN
998 select SYS_SUPPORTS_BIG_ENDIAN
1000 select CPU_MIPSR2_IRQ_VI
1012 select DMA_NONCOHERENT
1014 select SYS_HAS_CPU_MIPS32_R1
1015 select SYS_HAS_EARLY_PRINTK
1016 select SYS_SUPPORTS_32BIT_KERNEL
1019 config SWAP_IO_SPACE
1022 config SERIAL_RM9000
1025 config SGI_HAS_INDYDOG
1037 config SGI_HAS_ZILOG
1040 config SGI_HAS_I8042
1043 config DEFAULT_SGI_PARTITION
1055 config MIPS_L1_CACHE_SHIFT
1057 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1058 default "6" if MIPS_CPU_SCACHE
1059 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1062 config HAVE_STD_PC_SERIAL_PORT
1066 bool "ARC console support"
1067 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1071 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1076 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1085 menu "CPU selection"
1091 config CPU_LOONGSON2E
1093 depends on SYS_HAS_CPU_LOONGSON2E
1094 select CPU_LOONGSON2
1096 The Loongson 2E processor implements the MIPS III instruction set
1097 with many extensions.
1099 It has an internal FPGA northbridge, which is compatiable to
1102 config CPU_LOONGSON2F
1104 depends on SYS_HAS_CPU_LOONGSON2F
1105 select CPU_LOONGSON2
1107 select ARCH_REQUIRE_GPIOLIB
1109 The Loongson 2F processor implements the MIPS III instruction set
1110 with many extensions.
1112 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1113 have a similar programming interface with FPGA northbridge used in
1116 config CPU_MIPS32_R1
1117 bool "MIPS32 Release 1"
1118 depends on SYS_HAS_CPU_MIPS32_R1
1119 select CPU_HAS_PREFETCH
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_HIGHMEM
1123 Choose this option to build a kernel for release 1 or later of the
1124 MIPS32 architecture. Most modern embedded systems with a 32-bit
1125 MIPS processor are based on a MIPS32 processor. If you know the
1126 specific type of processor in your system, choose those that one
1127 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1128 Release 2 of the MIPS32 architecture is available since several
1129 years so chances are you even have a MIPS32 Release 2 processor
1130 in which case you should choose CPU_MIPS32_R2 instead for better
1133 config CPU_MIPS32_R2
1134 bool "MIPS32 Release 2"
1135 depends on SYS_HAS_CPU_MIPS32_R2
1136 select CPU_HAS_PREFETCH
1137 select CPU_SUPPORTS_32BIT_KERNEL
1138 select CPU_SUPPORTS_HIGHMEM
1140 Choose this option to build a kernel for release 2 or later of the
1141 MIPS32 architecture. Most modern embedded systems with a 32-bit
1142 MIPS processor are based on a MIPS32 processor. If you know the
1143 specific type of processor in your system, choose those that one
1144 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1146 config CPU_MIPS64_R1
1147 bool "MIPS64 Release 1"
1148 depends on SYS_HAS_CPU_MIPS64_R1
1149 select CPU_HAS_PREFETCH
1150 select CPU_SUPPORTS_32BIT_KERNEL
1151 select CPU_SUPPORTS_64BIT_KERNEL
1152 select CPU_SUPPORTS_HIGHMEM
1153 select CPU_SUPPORTS_HUGEPAGES
1155 Choose this option to build a kernel for release 1 or later of the
1156 MIPS64 architecture. Many modern embedded systems with a 64-bit
1157 MIPS processor are based on a MIPS64 processor. If you know the
1158 specific type of processor in your system, choose those that one
1159 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1160 Release 2 of the MIPS64 architecture is available since several
1161 years so chances are you even have a MIPS64 Release 2 processor
1162 in which case you should choose CPU_MIPS64_R2 instead for better
1165 config CPU_MIPS64_R2
1166 bool "MIPS64 Release 2"
1167 depends on SYS_HAS_CPU_MIPS64_R2
1168 select CPU_HAS_PREFETCH
1169 select CPU_SUPPORTS_32BIT_KERNEL
1170 select CPU_SUPPORTS_64BIT_KERNEL
1171 select CPU_SUPPORTS_HIGHMEM
1172 select CPU_SUPPORTS_HUGEPAGES
1174 Choose this option to build a kernel for release 2 or later of the
1175 MIPS64 architecture. Many modern embedded systems with a 64-bit
1176 MIPS processor are based on a MIPS64 processor. If you know the
1177 specific type of processor in your system, choose those that one
1178 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1182 depends on SYS_HAS_CPU_R3000
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1187 Please make sure to pick the right CPU type. Linux/MIPS is not
1188 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1189 *not* work on R4000 machines and vice versa. However, since most
1190 of the supported machines have an R4000 (or similar) CPU, R4x00
1191 might be a safe bet. If the resulting kernel does not work,
1192 try to recompile with R3000.
1196 depends on SYS_HAS_CPU_TX39XX
1197 select CPU_SUPPORTS_32BIT_KERNEL
1201 depends on SYS_HAS_CPU_VR41XX
1202 select CPU_SUPPORTS_32BIT_KERNEL
1203 select CPU_SUPPORTS_64BIT_KERNEL
1205 The options selects support for the NEC VR4100 series of processors.
1206 Only choose this option if you have one of these processors as a
1207 kernel built with this option will not run on any other type of
1208 processor or vice versa.
1212 depends on SYS_HAS_CPU_R4300
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_64BIT_KERNEL
1216 MIPS Technologies R4300-series processors.
1220 depends on SYS_HAS_CPU_R4X00
1221 select CPU_SUPPORTS_32BIT_KERNEL
1222 select CPU_SUPPORTS_64BIT_KERNEL
1224 MIPS Technologies R4000-series processors other than 4300, including
1225 the R4000, R4400, R4600, and 4700.
1229 depends on SYS_HAS_CPU_TX49XX
1230 select CPU_HAS_PREFETCH
1231 select CPU_SUPPORTS_32BIT_KERNEL
1232 select CPU_SUPPORTS_64BIT_KERNEL
1236 depends on SYS_HAS_CPU_R5000
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1240 MIPS Technologies R5000-series processors other than the Nevada.
1244 depends on SYS_HAS_CPU_R5432
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_64BIT_KERNEL
1250 depends on SYS_HAS_CPU_R5500
1251 select CPU_SUPPORTS_32BIT_KERNEL
1252 select CPU_SUPPORTS_64BIT_KERNEL
1253 select CPU_SUPPORTS_HUGEPAGES
1255 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1260 depends on EXPERIMENTAL
1261 depends on SYS_HAS_CPU_R6000
1262 select CPU_SUPPORTS_32BIT_KERNEL
1264 MIPS Technologies R6000 and R6000A series processors. Note these
1265 processors are extremely rare and the support for them is incomplete.
1269 depends on SYS_HAS_CPU_NEVADA
1270 select CPU_SUPPORTS_32BIT_KERNEL
1271 select CPU_SUPPORTS_64BIT_KERNEL
1273 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1277 depends on EXPERIMENTAL
1278 depends on SYS_HAS_CPU_R8000
1279 select CPU_HAS_PREFETCH
1280 select CPU_SUPPORTS_64BIT_KERNEL
1282 MIPS Technologies R8000 processors. Note these processors are
1283 uncommon and the support for them is incomplete.
1287 depends on SYS_HAS_CPU_R10000
1288 select CPU_HAS_PREFETCH
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_64BIT_KERNEL
1291 select CPU_SUPPORTS_HIGHMEM
1293 MIPS Technologies R10000-series processors.
1297 depends on SYS_HAS_CPU_RM7000
1298 select CPU_HAS_PREFETCH
1299 select CPU_SUPPORTS_32BIT_KERNEL
1300 select CPU_SUPPORTS_64BIT_KERNEL
1301 select CPU_SUPPORTS_HIGHMEM
1305 depends on SYS_HAS_CPU_RM9000
1306 select CPU_HAS_PREFETCH
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_64BIT_KERNEL
1309 select CPU_SUPPORTS_HIGHMEM
1310 select WEAK_ORDERING
1314 depends on SYS_HAS_CPU_SB1
1315 select CPU_SUPPORTS_32BIT_KERNEL
1316 select CPU_SUPPORTS_64BIT_KERNEL
1317 select CPU_SUPPORTS_HIGHMEM
1318 select WEAK_ORDERING
1320 config CPU_CAVIUM_OCTEON
1321 bool "Cavium Octeon processor"
1322 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1324 select IRQ_CPU_OCTEON
1325 select CPU_HAS_PREFETCH
1326 select CPU_SUPPORTS_64BIT_KERNEL
1327 select SYS_SUPPORTS_SMP
1328 select NR_CPUS_DEFAULT_16
1329 select WEAK_ORDERING
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.
1341 config CPU_NOP_WORKAROUNDS
1344 config CPU_JUMP_WORKAROUNDS
1347 config CPU_LOONGSON2F_WORKAROUNDS
1348 bool "Loongson 2F Workarounds"
1350 select CPU_NOP_WORKAROUNDS
1351 select CPU_JUMP_WORKAROUNDS
1353 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1354 require workarounds. Without workarounds the system may hang
1355 unexpectedly. For more information please refer to the gas
1356 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1358 Loongson 2F03 and later have fixed these issues and no workarounds
1359 are needed. The workarounds have no significant side effect on them
1360 but may decrease the performance of the system so this option should
1361 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1364 If unsure, please say Y.
1365 endif # CPU_LOONGSON2F
1367 config SYS_SUPPORTS_ZBOOT
1369 select HAVE_KERNEL_GZIP
1370 select HAVE_KERNEL_BZIP2
1371 select HAVE_KERNEL_LZMA
1372 select HAVE_KERNEL_LZO
1374 config SYS_SUPPORTS_ZBOOT_UART16550
1376 select SYS_SUPPORTS_ZBOOT
1378 config CPU_LOONGSON2
1380 select CPU_SUPPORTS_32BIT_KERNEL
1381 select CPU_SUPPORTS_64BIT_KERNEL
1382 select CPU_SUPPORTS_HIGHMEM
1384 config SYS_HAS_CPU_LOONGSON2E
1387 config SYS_HAS_CPU_LOONGSON2F
1389 select CPU_SUPPORTS_CPUFREQ
1390 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1391 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1393 config SYS_HAS_CPU_MIPS32_R1
1396 config SYS_HAS_CPU_MIPS32_R2
1399 config SYS_HAS_CPU_MIPS64_R1
1402 config SYS_HAS_CPU_MIPS64_R2
1405 config SYS_HAS_CPU_R3000
1408 config SYS_HAS_CPU_TX39XX
1411 config SYS_HAS_CPU_VR41XX
1414 config SYS_HAS_CPU_R4300
1417 config SYS_HAS_CPU_R4X00
1420 config SYS_HAS_CPU_TX49XX
1423 config SYS_HAS_CPU_R5000
1426 config SYS_HAS_CPU_R5432
1429 config SYS_HAS_CPU_R5500
1432 config SYS_HAS_CPU_R6000
1435 config SYS_HAS_CPU_NEVADA
1438 config SYS_HAS_CPU_R8000
1441 config SYS_HAS_CPU_R10000
1444 config SYS_HAS_CPU_RM7000
1447 config SYS_HAS_CPU_RM9000
1450 config SYS_HAS_CPU_SB1
1453 config SYS_HAS_CPU_CAVIUM_OCTEON
1457 # CPU may reorder R->R, R->W, W->R, W->W
1458 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1460 config WEAK_ORDERING
1464 # CPU may reorder reads and writes beyond LL/SC
1465 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1467 config WEAK_REORDERING_BEYOND_LLSC
1472 # These two indicate any level of the MIPS32 and MIPS64 architecture
1476 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1480 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1483 # These two indicate the revision of the architecture, either Release 1 or Release 2
1487 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1491 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1493 config SYS_SUPPORTS_32BIT_KERNEL
1495 config SYS_SUPPORTS_64BIT_KERNEL
1497 config CPU_SUPPORTS_32BIT_KERNEL
1499 config CPU_SUPPORTS_64BIT_KERNEL
1501 config CPU_SUPPORTS_CPUFREQ
1503 config CPU_SUPPORTS_ADDRWINCFG
1505 config CPU_SUPPORTS_HUGEPAGES
1507 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1509 config MIPS_PGD_C0_CONTEXT
1511 default y if 64BIT && CPU_MIPSR2
1514 # Set to y for ptrace access to watch registers.
1516 config HARDWARE_WATCHPOINTS
1518 default y if CPU_MIPSR1 || CPU_MIPSR2
1524 prompt "Kernel code model"
1526 You should only select this option if you have a workload that
1527 actually benefits from 64-bit processing or if your machine has
1528 large memory. You will only be presented a single option in this
1529 menu if your system does not support both 32-bit and 64-bit kernels.
1532 bool "32-bit kernel"
1533 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1536 Select this option if you want to build a 32-bit kernel.
1538 bool "64-bit kernel"
1539 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1540 select HAVE_SYSCALL_WRAPPERS
1542 Select this option if you want to build a 64-bit kernel.
1547 prompt "Kernel page size"
1548 default PAGE_SIZE_4KB
1550 config PAGE_SIZE_4KB
1552 depends on !CPU_LOONGSON2
1554 This option select the standard 4kB Linux page size. On some
1555 R3000-family processors this is the only available page size. Using
1556 4kB page size will minimize memory consumption and is therefore
1557 recommended for low memory systems.
1559 config PAGE_SIZE_8KB
1561 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1563 Using 8kB page size will result in higher performance kernel at
1564 the price of higher memory consumption. This option is available
1565 only on R8000 and cnMIPS processors. Note that you will need a
1566 suitable Linux distribution to support this.
1568 config PAGE_SIZE_16KB
1570 depends on !CPU_R3000 && !CPU_TX39XX
1572 Using 16kB page size will result in higher performance kernel at
1573 the price of higher memory consumption. This option is available on
1574 all non-R3000 family processors. Note that you will need a suitable
1575 Linux distribution to support this.
1577 config PAGE_SIZE_32KB
1579 depends on CPU_CAVIUM_OCTEON
1581 Using 32kB page size will result in higher performance kernel at
1582 the price of higher memory consumption. This option is available
1583 only on cnMIPS cores. Note that you will need a suitable Linux
1584 distribution to support this.
1586 config PAGE_SIZE_64KB
1588 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1590 Using 64kB page size will result in higher performance kernel at
1591 the price of higher memory consumption. This option is available on
1592 all non-R3000 family processor. Not that at the time of this
1593 writing this option is still high experimental.
1600 config IP22_CPU_SCACHE
1605 # Support for a MIPS32 / MIPS64 style S-caches
1607 config MIPS_CPU_SCACHE
1611 config R5000_CPU_SCACHE
1615 config RM7000_CPU_SCACHE
1619 config SIBYTE_DMA_PAGEOPS
1620 bool "Use DMA to clear/copy pages"
1623 Instead of using the CPU to zero and copy pages, use a Data Mover
1624 channel. These DMA channels are otherwise unused by the standard
1625 SiByte Linux port. Seems to give a small performance benefit.
1627 config CPU_HAS_PREFETCH
1631 prompt "MIPS MT options"
1633 config MIPS_MT_DISABLED
1634 bool "Disable multithreading support."
1636 Use this option if your workload can't take advantage of
1637 MIPS hardware multithreading support. On systems that don't have
1638 the option of an MT-enabled processor this option will be the only
1639 option in this menu.
1642 bool "Use 1 TC on each available VPE for SMP"
1643 depends on SYS_SUPPORTS_MULTITHREADING
1644 select CPU_MIPSR2_IRQ_VI
1645 select CPU_MIPSR2_IRQ_EI
1647 select NR_CPUS_DEFAULT_2
1649 select SYS_SUPPORTS_SCHED_SMT if SMP
1650 select SYS_SUPPORTS_SMP
1653 This is a kernel model which is also known a VSMP or lately
1654 has been marketesed into SMVP.
1657 bool "SMTC: Use all TCs on all VPEs for SMP"
1658 depends on CPU_MIPS32_R2
1659 #depends on CPU_MIPS64_R2 # once there is hardware ...
1660 depends on SYS_SUPPORTS_MULTITHREADING
1661 select CPU_MIPSR2_IRQ_VI
1662 select CPU_MIPSR2_IRQ_EI
1664 select NR_CPUS_DEFAULT_8
1666 select SYS_SUPPORTS_SMP
1669 This is a kernel model which is known a SMTC or lately has been
1670 marketesed into SMVP.
1678 bool "SMT (multithreading) scheduler support"
1679 depends on SYS_SUPPORTS_SCHED_SMT
1682 SMT scheduler support improves the CPU scheduler's decision making
1683 when dealing with MIPS MT enabled cores at a cost of slightly
1684 increased overhead in some places. If unsure say N here.
1686 config SYS_SUPPORTS_SCHED_SMT
1690 config SYS_SUPPORTS_MULTITHREADING
1693 config MIPS_MT_FPAFF
1694 bool "Dynamic FPU affinity for FP-intensive threads"
1696 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1698 config MIPS_VPE_LOADER
1699 bool "VPE loader support."
1700 depends on SYS_SUPPORTS_MULTITHREADING
1701 select CPU_MIPSR2_IRQ_VI
1702 select CPU_MIPSR2_IRQ_EI
1705 Includes a loader for loading an elf relocatable object
1706 onto another VPE and running it.
1708 config MIPS_MT_SMTC_IM_BACKSTOP
1709 bool "Use per-TC register bits as backstop for inhibited IM bits"
1710 depends on MIPS_MT_SMTC
1713 To support multiple TC microthreads acting as "CPUs" within
1714 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1715 during interrupt handling. To support legacy drivers and interrupt
1716 controller management code, SMTC has a "backstop" to track and
1717 if necessary restore the interrupt mask. This has some performance
1718 impact on interrupt service overhead.
1720 config MIPS_MT_SMTC_IRQAFF
1721 bool "Support IRQ affinity API"
1722 depends on MIPS_MT_SMTC
1725 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1726 for SMTC Linux kernel. Requires platform support, of which
1727 an example can be found in the MIPS kernel i8259 and Malta
1728 platform code. Adds some overhead to interrupt dispatch, and
1729 should be used only if you know what you are doing.
1731 config MIPS_VPE_LOADER_TOM
1732 bool "Load VPE program into memory hidden from linux"
1733 depends on MIPS_VPE_LOADER
1736 The loader can use memory that is present but has been hidden from
1737 Linux using the kernel command line option "mem=xxMB". It's up to
1738 you to ensure the amount you put in the option and the space your
1739 program requires is less or equal to the amount physically present.
1741 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1742 config MIPS_VPE_APSP_API
1743 bool "Enable support for AP/SP API (RTLX)"
1744 depends on MIPS_VPE_LOADER
1747 config MIPS_APSP_KSPD
1749 depends on MIPS_VPE_APSP_API
1752 KSPD is a kernel daemon that accepts syscall requests from the SP
1753 side, actions them and returns the results. It also handles the
1754 "exit" syscall notifying other kernel modules the SP program is
1755 exiting. You probably want to say yes here.
1758 bool "MIPS CMP framework support"
1759 depends on SYS_SUPPORTS_MIPS_CMP
1761 select SYS_SUPPORTS_SMP
1762 select SYS_SUPPORTS_SCHED_SMT if SMP
1763 select WEAK_ORDERING
1766 This is a placeholder option for the GCMP work. It will need to
1767 be handled differently...
1769 config SB1_PASS_1_WORKAROUNDS
1771 depends on CPU_SB1_PASS_1
1774 config SB1_PASS_2_WORKAROUNDS
1776 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1779 config SB1_PASS_2_1_WORKAROUNDS
1781 depends on CPU_SB1 && CPU_SB1_PASS_2
1784 config 64BIT_PHYS_ADDR
1787 config ARCH_PHYS_ADDR_T_64BIT
1788 def_bool 64BIT_PHYS_ADDR
1790 config CPU_HAS_SMARTMIPS
1791 depends on SYS_SUPPORTS_SMARTMIPS
1792 bool "Support for the SmartMIPS ASE"
1794 SmartMIPS is a extension of the MIPS32 architecture aimed at
1795 increased security at both hardware and software level for
1796 smartcards. Enabling this option will allow proper use of the
1797 SmartMIPS instructions by Linux applications. However a kernel with
1798 this option will not work on a MIPS core without SmartMIPS core. If
1799 you don't know you probably don't have SmartMIPS and should say N
1806 # Vectored interrupt mode is an R2 feature
1808 config CPU_MIPSR2_IRQ_VI
1812 # Extended interrupt mode is an R2 feature
1814 config CPU_MIPSR2_IRQ_EI
1819 depends on !CPU_R3000
1822 config GENERIC_CLOCKEVENTS_BROADCAST
1828 config CPU_DADDI_WORKAROUNDS
1831 config CPU_R4000_WORKAROUNDS
1833 select CPU_R4400_WORKAROUNDS
1835 config CPU_R4400_WORKAROUNDS
1839 # Use the generic interrupt handling code in kernel/irq/:
1841 config GENERIC_HARDIRQS
1845 config GENERIC_IRQ_PROBE
1853 # - Highmem only makes sense for the 32-bit kernel.
1854 # - The current highmem code will only work properly on physically indexed
1855 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1856 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1857 # moment we protect the user and offer the highmem option only on machines
1858 # where it's known to be safe. This will not offer highmem on a few systems
1859 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1860 # indexed CPUs but we're playing safe.
1861 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1862 # know they might have memory configurations that could make use of highmem
1866 bool "High Memory Support"
1867 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1869 config CPU_SUPPORTS_HIGHMEM
1872 config SYS_SUPPORTS_HIGHMEM
1875 config SYS_SUPPORTS_SMARTMIPS
1878 config ARCH_FLATMEM_ENABLE
1880 depends on !NUMA && !CPU_LOONGSON2
1882 config ARCH_DISCONTIGMEM_ENABLE
1884 default y if SGI_IP27
1886 Say Y to support efficient handling of discontiguous physical memory,
1887 for architectures which are either NUMA (Non-Uniform Memory Access)
1888 or have huge holes in the physical address space for other reasons.
1889 See <file:Documentation/vm/numa> for more.
1891 config ARCH_POPULATES_NODE_MAP
1894 config ARCH_SPARSEMEM_ENABLE
1896 select SPARSEMEM_STATIC
1900 depends on SYS_SUPPORTS_NUMA
1902 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1903 Access). This option improves performance on systems with more
1904 than two nodes; on two node systems it is generally better to
1905 leave it disabled; on single node systems disable this option
1908 config SYS_SUPPORTS_NUMA
1914 depends on NEED_MULTIPLE_NODES
1919 bool "Multi-Processing support"
1920 depends on SYS_SUPPORTS_SMP
1922 select USE_GENERIC_SMP_HELPERS
1924 This enables support for systems with more than one CPU. If you have
1925 a system with only one CPU, like most personal computers, say N. If
1926 you have a system with more than one CPU, say Y.
1928 If you say N here, the kernel will run on single and multiprocessor
1929 machines, but will use only one CPU of a multiprocessor machine. If
1930 you say Y here, the kernel will run on many, but not all,
1931 singleprocessor machines. On a singleprocessor machine, the kernel
1932 will run faster if you say N here.
1934 People using multiprocessor machines who say Y here should also say
1935 Y to "Enhanced Real Time Clock Support", below.
1937 See also the SMP-HOWTO available at
1938 <http://www.tldp.org/docs.html#howto>.
1940 If you don't know what to do here, say N.
1945 config SYS_SUPPORTS_MIPS_CMP
1948 config SYS_SUPPORTS_SMP
1951 config NR_CPUS_DEFAULT_1
1954 config NR_CPUS_DEFAULT_2
1957 config NR_CPUS_DEFAULT_4
1960 config NR_CPUS_DEFAULT_8
1963 config NR_CPUS_DEFAULT_16
1966 config NR_CPUS_DEFAULT_32
1969 config NR_CPUS_DEFAULT_64
1973 int "Maximum number of CPUs (2-64)"
1974 range 1 64 if NR_CPUS_DEFAULT_1
1976 default "1" if NR_CPUS_DEFAULT_1
1977 default "2" if NR_CPUS_DEFAULT_2
1978 default "4" if NR_CPUS_DEFAULT_4
1979 default "8" if NR_CPUS_DEFAULT_8
1980 default "16" if NR_CPUS_DEFAULT_16
1981 default "32" if NR_CPUS_DEFAULT_32
1982 default "64" if NR_CPUS_DEFAULT_64
1984 This allows you to specify the maximum number of CPUs which this
1985 kernel will support. The maximum supported value is 32 for 32-bit
1986 kernel and 64 for 64-bit kernels; the minimum value which makes
1987 sense is 1 for Qemu (useful only for kernel debugging purposes)
1988 and 2 for all others.
1990 This is purely to save memory - each supported CPU adds
1991 approximately eight kilobytes to the kernel image. For best
1992 performance should round up your number of processors to the next
1995 source "kernel/time/Kconfig"
1998 # Timer Interrupt Frequency Configuration
2002 prompt "Timer frequency"
2005 Allows the configuration of the timer frequency.
2008 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2011 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2014 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2017 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2020 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2023 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2026 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2030 config SYS_SUPPORTS_48HZ
2033 config SYS_SUPPORTS_100HZ
2036 config SYS_SUPPORTS_128HZ
2039 config SYS_SUPPORTS_250HZ
2042 config SYS_SUPPORTS_256HZ
2045 config SYS_SUPPORTS_1000HZ
2048 config SYS_SUPPORTS_1024HZ
2051 config SYS_SUPPORTS_ARBIT_HZ
2053 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2054 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2055 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2056 !SYS_SUPPORTS_1024HZ
2061 default 100 if HZ_100
2062 default 128 if HZ_128
2063 default 250 if HZ_250
2064 default 256 if HZ_256
2065 default 1000 if HZ_1000
2066 default 1024 if HZ_1024
2068 source "kernel/Kconfig.preempt"
2070 config MIPS_INSANE_LARGE
2071 bool "Support for large 64-bit configurations"
2072 depends on CPU_R10000 && 64BIT
2074 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2075 previous 64-bit processors which only supported 40 bit / 1TB. If you
2076 need processes of more than 1TB virtual address space, say Y here.
2077 This will result in additional memory usage, so it is not
2078 recommended for normal users.
2081 bool "Kexec system call (EXPERIMENTAL)"
2082 depends on EXPERIMENTAL
2084 kexec is a system call that implements the ability to shutdown your
2085 current kernel, and to start another kernel. It is like a reboot
2086 but it is independent of the system firmware. And like a reboot
2087 you can start any kernel with it, not just Linux.
2089 The name comes from the similarity to the exec system call.
2091 It is an ongoing process to be certain the hardware in a machine
2092 is properly shutdown, so do not be surprised if this code does not
2093 initially work for you. It may help to enable device hotplugging
2094 support. As of this writing the exact hardware interface is
2095 strongly in flux, so no good recommendation can be made.
2098 bool "Enable seccomp to safely compute untrusted bytecode"
2102 This kernel feature is useful for number crunching applications
2103 that may need to compute untrusted bytecode during their
2104 execution. By using pipes or other transports made available to
2105 the process as file descriptors supporting the read/write
2106 syscalls, it's possible to isolate those applications in
2107 their own address space using seccomp. Once seccomp is
2108 enabled via /proc/<pid>/seccomp, it cannot be disabled
2109 and the task is only allowed to execute a few safe syscalls
2110 defined by each seccomp mode.
2112 If unsure, say Y. Only embedded should say N here.
2116 config LOCKDEP_SUPPORT
2120 config STACKTRACE_SUPPORT
2124 source "init/Kconfig"
2126 source "kernel/Kconfig.freezer"
2128 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2136 bool "Support for PCI controller"
2137 depends on HW_HAS_PCI
2140 Find out whether you have a PCI motherboard. PCI is the name of a
2141 bus system, i.e. the way the CPU talks to the other stuff inside
2142 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2148 source "drivers/pci/Kconfig"
2151 # ISA support is now enabled via select. Too many systems still have the one
2152 # or other ISA chip on the board that users don't know about so don't expect
2153 # users to choose the right thing ...
2160 depends on HW_HAS_EISA
2162 select GENERIC_ISA_DMA
2164 The Extended Industry Standard Architecture (EISA) bus was
2165 developed as an open alternative to the IBM MicroChannel bus.
2167 The EISA bus provided some of the features of the IBM MicroChannel
2168 bus while maintaining backward compatibility with cards made for
2169 the older ISA bus. The EISA bus saw limited use between 1988 and
2170 1995 when it was made obsolete by the PCI bus.
2172 Say Y here if you are building a kernel for an EISA-based machine.
2176 source "drivers/eisa/Kconfig"
2179 bool "TURBOchannel support"
2180 depends on MACH_DECSTATION
2182 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2183 processors. Documentation on writing device drivers for TurboChannel
2185 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2188 # bool "Access.Bus support"
2197 select MIPS_EXTERNAL_TIMER
2202 source "drivers/pcmcia/Kconfig"
2204 source "drivers/pci/hotplug/Kconfig"
2208 menu "Executable file formats"
2210 source "fs/Kconfig.binfmt"
2215 config MIPS32_COMPAT
2216 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2219 Select this option if you want Linux/MIPS 32-bit binary
2220 compatibility. Since all software available for Linux/MIPS is
2221 currently 32-bit you should say Y here.
2225 depends on MIPS32_COMPAT
2228 config SYSVIPC_COMPAT
2230 depends on COMPAT && SYSVIPC
2234 bool "Kernel support for o32 binaries"
2235 depends on MIPS32_COMPAT
2237 Select this option if you want to run o32 binaries. These are pure
2238 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2239 existing binaries are in this format.
2244 bool "Kernel support for n32 binaries"
2245 depends on MIPS32_COMPAT
2247 Select this option if you want to run n32 binaries. These are
2248 64-bit binaries using 32-bit quantities for addressing and certain
2249 data that would normally be 64-bit. They are used in special
2256 default y if MIPS32_O32 || MIPS32_N32
2260 menu "Power management options"
2262 config ARCH_HIBERNATION_POSSIBLE
2264 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2266 config ARCH_SUSPEND_POSSIBLE
2268 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2270 source "kernel/power/Kconfig"
2274 source "arch/mips/kernel/cpufreq/Kconfig"
2276 source "net/Kconfig"
2278 source "drivers/Kconfig"
2282 source "arch/mips/Kconfig.debug"
2284 source "security/Kconfig"
2286 source "crypto/Kconfig"
2288 source "lib/Kconfig"