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
761 config GENERIC_CMOS_UPDATE
765 config SCHED_OMIT_FRAME_POINTER
769 config GENERIC_HARDIRQS_NO__DO_IRQ
773 # Select some configuration options automatically based on user selections.
778 config ARCH_MAY_HAVE_PC_FDC
827 select ARCH_REQUIRE_GPIOLIB
836 config DMA_NONCOHERENT
838 select NEED_DMA_MAP_STATE
840 config NEED_DMA_MAP_STATE
843 config SYS_HAS_EARLY_PRINTK
847 bool "Support for hot-pluggable CPUs"
848 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
850 Say Y here to allow turning CPUs off and on. CPUs can be
851 controlled through /sys/devices/system/cpu.
852 (Note: power management support will enable this option
853 automatically on SMP systems. )
854 Say N if you want to disable CPU hotplug.
856 config SYS_SUPPORTS_HOTPLUG_CPU
871 config MIPS_DISABLE_OBSOLETE_IDE
880 config GENERIC_ISA_DMA
882 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
884 config GENERIC_ISA_DMA_SUPPORT_BROKEN
886 select GENERIC_ISA_DMA
892 # Endianess selection. Sufficiently obscure so many users don't know what to
893 # answer,so we try hard to limit the available choices. Also the use of a
894 # choice statement should be more obvious to the user.
897 prompt "Endianess selection"
899 Some MIPS machines can be configured for either little or big endian
900 byte order. These modes require different kernels and a different
901 Linux distribution. In general there is one preferred byteorder for a
902 particular system but some systems are just as commonly used in the
903 one or the other endianness.
905 config CPU_BIG_ENDIAN
907 depends on SYS_SUPPORTS_BIG_ENDIAN
909 config CPU_LITTLE_ENDIAN
911 depends on SYS_SUPPORTS_LITTLE_ENDIAN
919 config SYS_SUPPORTS_APM_EMULATION
922 config SYS_SUPPORTS_BIG_ENDIAN
925 config SYS_SUPPORTS_LITTLE_ENDIAN
928 config SYS_SUPPORTS_HUGETLBFS
930 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
957 config IRQ_CPU_OCTEON
960 config MIPS_BOARDS_GEN
963 config PCI_GT64XXX_PCI0
966 config NO_EXCEPT_FILL
977 select DMA_NONCOHERENT
980 select SYS_HAS_CPU_R5500
981 select SYS_SUPPORTS_32BIT_KERNEL
982 select SYS_SUPPORTS_64BIT_KERNEL
983 select SYS_SUPPORTS_BIG_ENDIAN
990 select DMA_NONCOHERENT
991 select SYS_HAS_CPU_MIPS32_R2
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_LITTLE_ENDIAN
994 select SYS_SUPPORTS_BIG_ENDIAN
996 select CPU_MIPSR2_IRQ_VI
1008 select DMA_NONCOHERENT
1010 select SYS_HAS_CPU_MIPS32_R1
1011 select SYS_HAS_EARLY_PRINTK
1012 select SYS_SUPPORTS_32BIT_KERNEL
1015 config SWAP_IO_SPACE
1018 config SERIAL_RM9000
1021 config SGI_HAS_INDYDOG
1033 config SGI_HAS_ZILOG
1036 config SGI_HAS_I8042
1039 config DEFAULT_SGI_PARTITION
1051 config MIPS_L1_CACHE_SHIFT
1053 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1054 default "6" if MIPS_CPU_SCACHE
1055 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1058 config HAVE_STD_PC_SERIAL_PORT
1062 bool "ARC console support"
1063 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1067 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1072 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1081 menu "CPU selection"
1087 config CPU_LOONGSON2E
1089 depends on SYS_HAS_CPU_LOONGSON2E
1090 select CPU_LOONGSON2
1092 The Loongson 2E processor implements the MIPS III instruction set
1093 with many extensions.
1095 It has an internal FPGA northbridge, which is compatiable to
1098 config CPU_LOONGSON2F
1100 depends on SYS_HAS_CPU_LOONGSON2F
1101 select CPU_LOONGSON2
1103 select ARCH_REQUIRE_GPIOLIB
1105 The Loongson 2F processor implements the MIPS III instruction set
1106 with many extensions.
1108 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1109 have a similar programming interface with FPGA northbridge used in
1112 config CPU_MIPS32_R1
1113 bool "MIPS32 Release 1"
1114 depends on SYS_HAS_CPU_MIPS32_R1
1115 select CPU_HAS_PREFETCH
1116 select CPU_SUPPORTS_32BIT_KERNEL
1117 select CPU_SUPPORTS_HIGHMEM
1119 Choose this option to build a kernel for release 1 or later of the
1120 MIPS32 architecture. Most modern embedded systems with a 32-bit
1121 MIPS processor are based on a MIPS32 processor. If you know the
1122 specific type of processor in your system, choose those that one
1123 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1124 Release 2 of the MIPS32 architecture is available since several
1125 years so chances are you even have a MIPS32 Release 2 processor
1126 in which case you should choose CPU_MIPS32_R2 instead for better
1129 config CPU_MIPS32_R2
1130 bool "MIPS32 Release 2"
1131 depends on SYS_HAS_CPU_MIPS32_R2
1132 select CPU_HAS_PREFETCH
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_HIGHMEM
1136 Choose this option to build a kernel for release 2 or later of the
1137 MIPS32 architecture. Most modern embedded systems with a 32-bit
1138 MIPS processor are based on a MIPS32 processor. If you know the
1139 specific type of processor in your system, choose those that one
1140 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1142 config CPU_MIPS64_R1
1143 bool "MIPS64 Release 1"
1144 depends on SYS_HAS_CPU_MIPS64_R1
1145 select CPU_HAS_PREFETCH
1146 select CPU_SUPPORTS_32BIT_KERNEL
1147 select CPU_SUPPORTS_64BIT_KERNEL
1148 select CPU_SUPPORTS_HIGHMEM
1149 select CPU_SUPPORTS_HUGEPAGES
1151 Choose this option to build a kernel for release 1 or later of the
1152 MIPS64 architecture. Many modern embedded systems with a 64-bit
1153 MIPS processor are based on a MIPS64 processor. If you know the
1154 specific type of processor in your system, choose those that one
1155 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1156 Release 2 of the MIPS64 architecture is available since several
1157 years so chances are you even have a MIPS64 Release 2 processor
1158 in which case you should choose CPU_MIPS64_R2 instead for better
1161 config CPU_MIPS64_R2
1162 bool "MIPS64 Release 2"
1163 depends on SYS_HAS_CPU_MIPS64_R2
1164 select CPU_HAS_PREFETCH
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_64BIT_KERNEL
1167 select CPU_SUPPORTS_HIGHMEM
1168 select CPU_SUPPORTS_HUGEPAGES
1170 Choose this option to build a kernel for release 2 or later of the
1171 MIPS64 architecture. Many modern embedded systems with a 64-bit
1172 MIPS processor are based on a MIPS64 processor. If you know the
1173 specific type of processor in your system, choose those that one
1174 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1178 depends on SYS_HAS_CPU_R3000
1180 select CPU_SUPPORTS_32BIT_KERNEL
1181 select CPU_SUPPORTS_HIGHMEM
1183 Please make sure to pick the right CPU type. Linux/MIPS is not
1184 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1185 *not* work on R4000 machines and vice versa. However, since most
1186 of the supported machines have an R4000 (or similar) CPU, R4x00
1187 might be a safe bet. If the resulting kernel does not work,
1188 try to recompile with R3000.
1192 depends on SYS_HAS_CPU_TX39XX
1193 select CPU_SUPPORTS_32BIT_KERNEL
1197 depends on SYS_HAS_CPU_VR41XX
1198 select CPU_SUPPORTS_32BIT_KERNEL
1199 select CPU_SUPPORTS_64BIT_KERNEL
1201 The options selects support for the NEC VR4100 series of processors.
1202 Only choose this option if you have one of these processors as a
1203 kernel built with this option will not run on any other type of
1204 processor or vice versa.
1208 depends on SYS_HAS_CPU_R4300
1209 select CPU_SUPPORTS_32BIT_KERNEL
1210 select CPU_SUPPORTS_64BIT_KERNEL
1212 MIPS Technologies R4300-series processors.
1216 depends on SYS_HAS_CPU_R4X00
1217 select CPU_SUPPORTS_32BIT_KERNEL
1218 select CPU_SUPPORTS_64BIT_KERNEL
1220 MIPS Technologies R4000-series processors other than 4300, including
1221 the R4000, R4400, R4600, and 4700.
1225 depends on SYS_HAS_CPU_TX49XX
1226 select CPU_HAS_PREFETCH
1227 select CPU_SUPPORTS_32BIT_KERNEL
1228 select CPU_SUPPORTS_64BIT_KERNEL
1232 depends on SYS_HAS_CPU_R5000
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1236 MIPS Technologies R5000-series processors other than the Nevada.
1240 depends on SYS_HAS_CPU_R5432
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1246 depends on SYS_HAS_CPU_R5500
1247 select CPU_SUPPORTS_32BIT_KERNEL
1248 select CPU_SUPPORTS_64BIT_KERNEL
1249 select CPU_SUPPORTS_HUGEPAGES
1251 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1256 depends on EXPERIMENTAL
1257 depends on SYS_HAS_CPU_R6000
1258 select CPU_SUPPORTS_32BIT_KERNEL
1260 MIPS Technologies R6000 and R6000A series processors. Note these
1261 processors are extremely rare and the support for them is incomplete.
1265 depends on SYS_HAS_CPU_NEVADA
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1269 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1273 depends on EXPERIMENTAL
1274 depends on SYS_HAS_CPU_R8000
1275 select CPU_HAS_PREFETCH
1276 select CPU_SUPPORTS_64BIT_KERNEL
1278 MIPS Technologies R8000 processors. Note these processors are
1279 uncommon and the support for them is incomplete.
1283 depends on SYS_HAS_CPU_R10000
1284 select CPU_HAS_PREFETCH
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HIGHMEM
1289 MIPS Technologies R10000-series processors.
1293 depends on SYS_HAS_CPU_RM7000
1294 select CPU_HAS_PREFETCH
1295 select CPU_SUPPORTS_32BIT_KERNEL
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select CPU_SUPPORTS_HIGHMEM
1301 depends on SYS_HAS_CPU_RM9000
1302 select CPU_HAS_PREFETCH
1303 select CPU_SUPPORTS_32BIT_KERNEL
1304 select CPU_SUPPORTS_64BIT_KERNEL
1305 select CPU_SUPPORTS_HIGHMEM
1306 select WEAK_ORDERING
1310 depends on SYS_HAS_CPU_SB1
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1313 select CPU_SUPPORTS_HIGHMEM
1314 select WEAK_ORDERING
1316 config CPU_CAVIUM_OCTEON
1317 bool "Cavium Octeon processor"
1318 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1320 select IRQ_CPU_OCTEON
1321 select CPU_HAS_PREFETCH
1322 select CPU_SUPPORTS_64BIT_KERNEL
1323 select SYS_SUPPORTS_SMP
1324 select NR_CPUS_DEFAULT_16
1325 select WEAK_ORDERING
1326 select CPU_SUPPORTS_HIGHMEM
1327 select CPU_SUPPORTS_HUGEPAGES
1329 The Cavium Octeon processor is a highly integrated chip containing
1330 many ethernet hardware widgets for networking tasks. The processor
1331 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1332 Full details can be found at http://www.caviumnetworks.com.
1337 config CPU_NOP_WORKAROUNDS
1340 config CPU_JUMP_WORKAROUNDS
1343 config CPU_LOONGSON2F_WORKAROUNDS
1344 bool "Loongson 2F Workarounds"
1346 select CPU_NOP_WORKAROUNDS
1347 select CPU_JUMP_WORKAROUNDS
1349 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1350 require workarounds. Without workarounds the system may hang
1351 unexpectedly. For more information please refer to the gas
1352 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1354 Loongson 2F03 and later have fixed these issues and no workarounds
1355 are needed. The workarounds have no significant side effect on them
1356 but may decrease the performance of the system so this option should
1357 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1360 If unsure, please say Y.
1361 endif # CPU_LOONGSON2F
1363 config SYS_SUPPORTS_ZBOOT
1365 select HAVE_KERNEL_GZIP
1366 select HAVE_KERNEL_BZIP2
1367 select HAVE_KERNEL_LZMA
1368 select HAVE_KERNEL_LZO
1370 config SYS_SUPPORTS_ZBOOT_UART16550
1372 select SYS_SUPPORTS_ZBOOT
1374 config CPU_LOONGSON2
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_64BIT_KERNEL
1378 select CPU_SUPPORTS_HIGHMEM
1380 config SYS_HAS_CPU_LOONGSON2E
1383 config SYS_HAS_CPU_LOONGSON2F
1385 select CPU_SUPPORTS_CPUFREQ
1386 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1387 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1389 config SYS_HAS_CPU_MIPS32_R1
1392 config SYS_HAS_CPU_MIPS32_R2
1395 config SYS_HAS_CPU_MIPS64_R1
1398 config SYS_HAS_CPU_MIPS64_R2
1401 config SYS_HAS_CPU_R3000
1404 config SYS_HAS_CPU_TX39XX
1407 config SYS_HAS_CPU_VR41XX
1410 config SYS_HAS_CPU_R4300
1413 config SYS_HAS_CPU_R4X00
1416 config SYS_HAS_CPU_TX49XX
1419 config SYS_HAS_CPU_R5000
1422 config SYS_HAS_CPU_R5432
1425 config SYS_HAS_CPU_R5500
1428 config SYS_HAS_CPU_R6000
1431 config SYS_HAS_CPU_NEVADA
1434 config SYS_HAS_CPU_R8000
1437 config SYS_HAS_CPU_R10000
1440 config SYS_HAS_CPU_RM7000
1443 config SYS_HAS_CPU_RM9000
1446 config SYS_HAS_CPU_SB1
1449 config SYS_HAS_CPU_CAVIUM_OCTEON
1453 # CPU may reorder R->R, R->W, W->R, W->W
1454 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1456 config WEAK_ORDERING
1460 # CPU may reorder reads and writes beyond LL/SC
1461 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1463 config WEAK_REORDERING_BEYOND_LLSC
1468 # These two indicate any level of the MIPS32 and MIPS64 architecture
1472 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1476 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1479 # These two indicate the revision of the architecture, either Release 1 or Release 2
1483 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1487 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1489 config SYS_SUPPORTS_32BIT_KERNEL
1491 config SYS_SUPPORTS_64BIT_KERNEL
1493 config CPU_SUPPORTS_32BIT_KERNEL
1495 config CPU_SUPPORTS_64BIT_KERNEL
1497 config CPU_SUPPORTS_CPUFREQ
1499 config CPU_SUPPORTS_ADDRWINCFG
1501 config CPU_SUPPORTS_HUGEPAGES
1503 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1505 config MIPS_PGD_C0_CONTEXT
1507 default y if 64BIT && CPU_MIPSR2
1510 # Set to y for ptrace access to watch registers.
1512 config HARDWARE_WATCHPOINTS
1514 default y if CPU_MIPSR1 || CPU_MIPSR2
1520 prompt "Kernel code model"
1522 You should only select this option if you have a workload that
1523 actually benefits from 64-bit processing or if your machine has
1524 large memory. You will only be presented a single option in this
1525 menu if your system does not support both 32-bit and 64-bit kernels.
1528 bool "32-bit kernel"
1529 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1532 Select this option if you want to build a 32-bit kernel.
1534 bool "64-bit kernel"
1535 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1536 select HAVE_SYSCALL_WRAPPERS
1538 Select this option if you want to build a 64-bit kernel.
1543 prompt "Kernel page size"
1544 default PAGE_SIZE_4KB
1546 config PAGE_SIZE_4KB
1548 depends on !CPU_LOONGSON2
1550 This option select the standard 4kB Linux page size. On some
1551 R3000-family processors this is the only available page size. Using
1552 4kB page size will minimize memory consumption and is therefore
1553 recommended for low memory systems.
1555 config PAGE_SIZE_8KB
1557 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1559 Using 8kB page size will result in higher performance kernel at
1560 the price of higher memory consumption. This option is available
1561 only on R8000 and cnMIPS processors. Note that you will need a
1562 suitable Linux distribution to support this.
1564 config PAGE_SIZE_16KB
1566 depends on !CPU_R3000 && !CPU_TX39XX
1568 Using 16kB page size will result in higher performance kernel at
1569 the price of higher memory consumption. This option is available on
1570 all non-R3000 family processors. Note that you will need a suitable
1571 Linux distribution to support this.
1573 config PAGE_SIZE_32KB
1575 depends on CPU_CAVIUM_OCTEON
1577 Using 32kB page size will result in higher performance kernel at
1578 the price of higher memory consumption. This option is available
1579 only on cnMIPS cores. Note that you will need a suitable Linux
1580 distribution to support this.
1582 config PAGE_SIZE_64KB
1584 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1586 Using 64kB page size will result in higher performance kernel at
1587 the price of higher memory consumption. This option is available on
1588 all non-R3000 family processor. Not that at the time of this
1589 writing this option is still high experimental.
1596 config IP22_CPU_SCACHE
1601 # Support for a MIPS32 / MIPS64 style S-caches
1603 config MIPS_CPU_SCACHE
1607 config R5000_CPU_SCACHE
1611 config RM7000_CPU_SCACHE
1615 config SIBYTE_DMA_PAGEOPS
1616 bool "Use DMA to clear/copy pages"
1619 Instead of using the CPU to zero and copy pages, use a Data Mover
1620 channel. These DMA channels are otherwise unused by the standard
1621 SiByte Linux port. Seems to give a small performance benefit.
1623 config CPU_HAS_PREFETCH
1627 prompt "MIPS MT options"
1629 config MIPS_MT_DISABLED
1630 bool "Disable multithreading support."
1632 Use this option if your workload can't take advantage of
1633 MIPS hardware multithreading support. On systems that don't have
1634 the option of an MT-enabled processor this option will be the only
1635 option in this menu.
1638 bool "Use 1 TC on each available VPE for SMP"
1639 depends on SYS_SUPPORTS_MULTITHREADING
1640 select CPU_MIPSR2_IRQ_VI
1641 select CPU_MIPSR2_IRQ_EI
1643 select NR_CPUS_DEFAULT_2
1645 select SYS_SUPPORTS_SCHED_SMT if SMP
1646 select SYS_SUPPORTS_SMP
1649 This is a kernel model which is also known a VSMP or lately
1650 has been marketesed into SMVP.
1653 bool "SMTC: Use all TCs on all VPEs for SMP"
1654 depends on CPU_MIPS32_R2
1655 #depends on CPU_MIPS64_R2 # once there is hardware ...
1656 depends on SYS_SUPPORTS_MULTITHREADING
1657 select CPU_MIPSR2_IRQ_VI
1658 select CPU_MIPSR2_IRQ_EI
1660 select NR_CPUS_DEFAULT_8
1662 select SYS_SUPPORTS_SMP
1665 This is a kernel model which is known a SMTC or lately has been
1666 marketesed into SMVP.
1674 bool "SMT (multithreading) scheduler support"
1675 depends on SYS_SUPPORTS_SCHED_SMT
1678 SMT scheduler support improves the CPU scheduler's decision making
1679 when dealing with MIPS MT enabled cores at a cost of slightly
1680 increased overhead in some places. If unsure say N here.
1682 config SYS_SUPPORTS_SCHED_SMT
1686 config SYS_SUPPORTS_MULTITHREADING
1689 config MIPS_MT_FPAFF
1690 bool "Dynamic FPU affinity for FP-intensive threads"
1692 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1694 config MIPS_VPE_LOADER
1695 bool "VPE loader support."
1696 depends on SYS_SUPPORTS_MULTITHREADING
1697 select CPU_MIPSR2_IRQ_VI
1698 select CPU_MIPSR2_IRQ_EI
1701 Includes a loader for loading an elf relocatable object
1702 onto another VPE and running it.
1704 config MIPS_MT_SMTC_IM_BACKSTOP
1705 bool "Use per-TC register bits as backstop for inhibited IM bits"
1706 depends on MIPS_MT_SMTC
1709 To support multiple TC microthreads acting as "CPUs" within
1710 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1711 during interrupt handling. To support legacy drivers and interrupt
1712 controller management code, SMTC has a "backstop" to track and
1713 if necessary restore the interrupt mask. This has some performance
1714 impact on interrupt service overhead.
1716 config MIPS_MT_SMTC_IRQAFF
1717 bool "Support IRQ affinity API"
1718 depends on MIPS_MT_SMTC
1721 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1722 for SMTC Linux kernel. Requires platform support, of which
1723 an example can be found in the MIPS kernel i8259 and Malta
1724 platform code. Adds some overhead to interrupt dispatch, and
1725 should be used only if you know what you are doing.
1727 config MIPS_VPE_LOADER_TOM
1728 bool "Load VPE program into memory hidden from linux"
1729 depends on MIPS_VPE_LOADER
1732 The loader can use memory that is present but has been hidden from
1733 Linux using the kernel command line option "mem=xxMB". It's up to
1734 you to ensure the amount you put in the option and the space your
1735 program requires is less or equal to the amount physically present.
1737 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1738 config MIPS_VPE_APSP_API
1739 bool "Enable support for AP/SP API (RTLX)"
1740 depends on MIPS_VPE_LOADER
1743 config MIPS_APSP_KSPD
1745 depends on MIPS_VPE_APSP_API
1748 KSPD is a kernel daemon that accepts syscall requests from the SP
1749 side, actions them and returns the results. It also handles the
1750 "exit" syscall notifying other kernel modules the SP program is
1751 exiting. You probably want to say yes here.
1754 bool "MIPS CMP framework support"
1755 depends on SYS_SUPPORTS_MIPS_CMP
1757 select SYS_SUPPORTS_SMP
1758 select SYS_SUPPORTS_SCHED_SMT if SMP
1759 select WEAK_ORDERING
1762 This is a placeholder option for the GCMP work. It will need to
1763 be handled differently...
1765 config SB1_PASS_1_WORKAROUNDS
1767 depends on CPU_SB1_PASS_1
1770 config SB1_PASS_2_WORKAROUNDS
1772 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1775 config SB1_PASS_2_1_WORKAROUNDS
1777 depends on CPU_SB1 && CPU_SB1_PASS_2
1780 config 64BIT_PHYS_ADDR
1783 config ARCH_PHYS_ADDR_T_64BIT
1784 def_bool 64BIT_PHYS_ADDR
1786 config CPU_HAS_SMARTMIPS
1787 depends on SYS_SUPPORTS_SMARTMIPS
1788 bool "Support for the SmartMIPS ASE"
1790 SmartMIPS is a extension of the MIPS32 architecture aimed at
1791 increased security at both hardware and software level for
1792 smartcards. Enabling this option will allow proper use of the
1793 SmartMIPS instructions by Linux applications. However a kernel with
1794 this option will not work on a MIPS core without SmartMIPS core. If
1795 you don't know you probably don't have SmartMIPS and should say N
1802 # Vectored interrupt mode is an R2 feature
1804 config CPU_MIPSR2_IRQ_VI
1808 # Extended interrupt mode is an R2 feature
1810 config CPU_MIPSR2_IRQ_EI
1815 depends on !CPU_R3000
1818 config GENERIC_CLOCKEVENTS_BROADCAST
1824 config CPU_DADDI_WORKAROUNDS
1827 config CPU_R4000_WORKAROUNDS
1829 select CPU_R4400_WORKAROUNDS
1831 config CPU_R4400_WORKAROUNDS
1835 # Use the generic interrupt handling code in kernel/irq/:
1837 config GENERIC_HARDIRQS
1841 config GENERIC_IRQ_PROBE
1849 # - Highmem only makes sense for the 32-bit kernel.
1850 # - The current highmem code will only work properly on physically indexed
1851 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1852 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1853 # moment we protect the user and offer the highmem option only on machines
1854 # where it's known to be safe. This will not offer highmem on a few systems
1855 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1856 # indexed CPUs but we're playing safe.
1857 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1858 # know they might have memory configurations that could make use of highmem
1862 bool "High Memory Support"
1863 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1865 config CPU_SUPPORTS_HIGHMEM
1868 config SYS_SUPPORTS_HIGHMEM
1871 config SYS_SUPPORTS_SMARTMIPS
1874 config ARCH_FLATMEM_ENABLE
1876 depends on !NUMA && !CPU_LOONGSON2
1878 config ARCH_DISCONTIGMEM_ENABLE
1880 default y if SGI_IP27
1882 Say Y to support efficient handling of discontiguous physical memory,
1883 for architectures which are either NUMA (Non-Uniform Memory Access)
1884 or have huge holes in the physical address space for other reasons.
1885 See <file:Documentation/vm/numa> for more.
1887 config ARCH_POPULATES_NODE_MAP
1890 config ARCH_SPARSEMEM_ENABLE
1892 select SPARSEMEM_STATIC
1896 depends on SYS_SUPPORTS_NUMA
1898 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1899 Access). This option improves performance on systems with more
1900 than two nodes; on two node systems it is generally better to
1901 leave it disabled; on single node systems disable this option
1904 config SYS_SUPPORTS_NUMA
1910 depends on NEED_MULTIPLE_NODES
1915 bool "Multi-Processing support"
1916 depends on SYS_SUPPORTS_SMP
1918 select USE_GENERIC_SMP_HELPERS
1920 This enables support for systems with more than one CPU. If you have
1921 a system with only one CPU, like most personal computers, say N. If
1922 you have a system with more than one CPU, say Y.
1924 If you say N here, the kernel will run on single and multiprocessor
1925 machines, but will use only one CPU of a multiprocessor machine. If
1926 you say Y here, the kernel will run on many, but not all,
1927 singleprocessor machines. On a singleprocessor machine, the kernel
1928 will run faster if you say N here.
1930 People using multiprocessor machines who say Y here should also say
1931 Y to "Enhanced Real Time Clock Support", below.
1933 See also the SMP-HOWTO available at
1934 <http://www.tldp.org/docs.html#howto>.
1936 If you don't know what to do here, say N.
1941 config SYS_SUPPORTS_MIPS_CMP
1944 config SYS_SUPPORTS_SMP
1947 config NR_CPUS_DEFAULT_1
1950 config NR_CPUS_DEFAULT_2
1953 config NR_CPUS_DEFAULT_4
1956 config NR_CPUS_DEFAULT_8
1959 config NR_CPUS_DEFAULT_16
1962 config NR_CPUS_DEFAULT_32
1965 config NR_CPUS_DEFAULT_64
1969 int "Maximum number of CPUs (2-64)"
1970 range 1 64 if NR_CPUS_DEFAULT_1
1972 default "1" if NR_CPUS_DEFAULT_1
1973 default "2" if NR_CPUS_DEFAULT_2
1974 default "4" if NR_CPUS_DEFAULT_4
1975 default "8" if NR_CPUS_DEFAULT_8
1976 default "16" if NR_CPUS_DEFAULT_16
1977 default "32" if NR_CPUS_DEFAULT_32
1978 default "64" if NR_CPUS_DEFAULT_64
1980 This allows you to specify the maximum number of CPUs which this
1981 kernel will support. The maximum supported value is 32 for 32-bit
1982 kernel and 64 for 64-bit kernels; the minimum value which makes
1983 sense is 1 for Qemu (useful only for kernel debugging purposes)
1984 and 2 for all others.
1986 This is purely to save memory - each supported CPU adds
1987 approximately eight kilobytes to the kernel image. For best
1988 performance should round up your number of processors to the next
1991 source "kernel/time/Kconfig"
1994 # Timer Interrupt Frequency Configuration
1998 prompt "Timer frequency"
2001 Allows the configuration of the timer frequency.
2004 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2007 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2010 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2013 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2016 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2019 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2022 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2026 config SYS_SUPPORTS_48HZ
2029 config SYS_SUPPORTS_100HZ
2032 config SYS_SUPPORTS_128HZ
2035 config SYS_SUPPORTS_250HZ
2038 config SYS_SUPPORTS_256HZ
2041 config SYS_SUPPORTS_1000HZ
2044 config SYS_SUPPORTS_1024HZ
2047 config SYS_SUPPORTS_ARBIT_HZ
2049 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2050 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2051 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2052 !SYS_SUPPORTS_1024HZ
2057 default 100 if HZ_100
2058 default 128 if HZ_128
2059 default 250 if HZ_250
2060 default 256 if HZ_256
2061 default 1000 if HZ_1000
2062 default 1024 if HZ_1024
2064 source "kernel/Kconfig.preempt"
2066 config MIPS_INSANE_LARGE
2067 bool "Support for large 64-bit configurations"
2068 depends on CPU_R10000 && 64BIT
2070 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2071 previous 64-bit processors which only supported 40 bit / 1TB. If you
2072 need processes of more than 1TB virtual address space, say Y here.
2073 This will result in additional memory usage, so it is not
2074 recommended for normal users.
2077 bool "Kexec system call (EXPERIMENTAL)"
2078 depends on EXPERIMENTAL
2080 kexec is a system call that implements the ability to shutdown your
2081 current kernel, and to start another kernel. It is like a reboot
2082 but it is independent of the system firmware. And like a reboot
2083 you can start any kernel with it, not just Linux.
2085 The name comes from the similarity to the exec system call.
2087 It is an ongoing process to be certain the hardware in a machine
2088 is properly shutdown, so do not be surprised if this code does not
2089 initially work for you. It may help to enable device hotplugging
2090 support. As of this writing the exact hardware interface is
2091 strongly in flux, so no good recommendation can be made.
2094 bool "Enable seccomp to safely compute untrusted bytecode"
2098 This kernel feature is useful for number crunching applications
2099 that may need to compute untrusted bytecode during their
2100 execution. By using pipes or other transports made available to
2101 the process as file descriptors supporting the read/write
2102 syscalls, it's possible to isolate those applications in
2103 their own address space using seccomp. Once seccomp is
2104 enabled via /proc/<pid>/seccomp, it cannot be disabled
2105 and the task is only allowed to execute a few safe syscalls
2106 defined by each seccomp mode.
2108 If unsure, say Y. Only embedded should say N here.
2112 config LOCKDEP_SUPPORT
2116 config STACKTRACE_SUPPORT
2120 source "init/Kconfig"
2122 source "kernel/Kconfig.freezer"
2124 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2132 bool "Support for PCI controller"
2133 depends on HW_HAS_PCI
2136 Find out whether you have a PCI motherboard. PCI is the name of a
2137 bus system, i.e. the way the CPU talks to the other stuff inside
2138 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2144 source "drivers/pci/Kconfig"
2147 # ISA support is now enabled via select. Too many systems still have the one
2148 # or other ISA chip on the board that users don't know about so don't expect
2149 # users to choose the right thing ...
2156 depends on HW_HAS_EISA
2158 select GENERIC_ISA_DMA
2160 The Extended Industry Standard Architecture (EISA) bus was
2161 developed as an open alternative to the IBM MicroChannel bus.
2163 The EISA bus provided some of the features of the IBM MicroChannel
2164 bus while maintaining backward compatibility with cards made for
2165 the older ISA bus. The EISA bus saw limited use between 1988 and
2166 1995 when it was made obsolete by the PCI bus.
2168 Say Y here if you are building a kernel for an EISA-based machine.
2172 source "drivers/eisa/Kconfig"
2175 bool "TURBOchannel support"
2176 depends on MACH_DECSTATION
2178 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2179 processors. Documentation on writing device drivers for TurboChannel
2181 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2184 # bool "Access.Bus support"
2193 select MIPS_EXTERNAL_TIMER
2198 source "drivers/pcmcia/Kconfig"
2200 source "drivers/pci/hotplug/Kconfig"
2204 menu "Executable file formats"
2206 source "fs/Kconfig.binfmt"
2211 config MIPS32_COMPAT
2212 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2215 Select this option if you want Linux/MIPS 32-bit binary
2216 compatibility. Since all software available for Linux/MIPS is
2217 currently 32-bit you should say Y here.
2221 depends on MIPS32_COMPAT
2224 config SYSVIPC_COMPAT
2226 depends on COMPAT && SYSVIPC
2230 bool "Kernel support for o32 binaries"
2231 depends on MIPS32_COMPAT
2233 Select this option if you want to run o32 binaries. These are pure
2234 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2235 existing binaries are in this format.
2240 bool "Kernel support for n32 binaries"
2241 depends on MIPS32_COMPAT
2243 Select this option if you want to run n32 binaries. These are
2244 64-bit binaries using 32-bit quantities for addressing and certain
2245 data that would normally be 64-bit. They are used in special
2252 default y if MIPS32_O32 || MIPS32_N32
2256 menu "Power management options"
2258 config ARCH_HIBERNATION_POSSIBLE
2260 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2262 config ARCH_SUSPEND_POSSIBLE
2264 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2266 source "kernel/power/Kconfig"
2270 source "arch/mips/kernel/cpufreq/Kconfig"
2272 source "net/Kconfig"
2274 source "drivers/Kconfig"
2278 source "arch/mips/Kconfig.debug"
2280 source "security/Kconfig"
2282 source "crypto/Kconfig"
2284 source "lib/Kconfig"