4 select HAVE_GENERIC_DMA_COHERENT
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
10 select HAVE_FUNCTION_TRACER
11 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
12 select HAVE_DYNAMIC_FTRACE
13 select HAVE_FTRACE_MCOUNT_RECORD
14 select HAVE_C_RECORDMCOUNT
15 select HAVE_FUNCTION_GRAPH_TRACER
17 select HAVE_KRETPROBES
18 select RTC_LIB if !MACH_LOONGSON
19 select GENERIC_ATOMIC64 if !64BIT
21 select HAVE_DMA_API_DEBUG
22 select HAVE_GENERIC_HARDIRQS
23 select GENERIC_IRQ_PROBE
24 select HAVE_ARCH_JUMP_LABEL
26 menu "Machine selection"
36 bool "Alchemy processor based machines"
37 select 64BIT_PHYS_ADDR
41 select SYS_HAS_CPU_MIPS32_R1
42 select SYS_SUPPORTS_32BIT_KERNEL
43 select SYS_SUPPORTS_APM_EMULATION
45 select ARCH_WANT_OPTIONAL_GPIOLIB
46 select SYS_SUPPORTS_ZBOOT
49 bool "Texas Instruments AR7"
51 select DMA_NONCOHERENT
57 select SYS_HAS_CPU_MIPS32_R1
58 select SYS_HAS_EARLY_PRINTK
59 select SYS_SUPPORTS_32BIT_KERNEL
60 select SYS_SUPPORTS_LITTLE_ENDIAN
61 select SYS_SUPPORTS_ZBOOT_UART16550
62 select ARCH_REQUIRE_GPIOLIB
66 Support for the Texas Instruments AR7 System-on-a-Chip
67 family: TNETD7100, 7200 and 7300.
70 bool "Atheros AR71XX/AR724X/AR913X based boards"
74 select DMA_NONCOHERENT
76 select SYS_HAS_CPU_MIPS32_R2
77 select SYS_HAS_EARLY_PRINTK
78 select SYS_SUPPORTS_32BIT_KERNEL
79 select SYS_SUPPORTS_BIG_ENDIAN
81 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
84 bool "Broadcom BCM47XX based boards"
87 select DMA_NONCOHERENT
90 select SYS_HAS_CPU_MIPS32_R1
91 select SYS_SUPPORTS_32BIT_KERNEL
92 select SYS_SUPPORTS_LITTLE_ENDIAN
94 select SSB_DRIVER_MIPS
95 select SSB_DRIVER_EXTIF
97 select SSB_B43_PCI_BRIDGE if PCI
98 select SSB_PCICORE_HOSTMODE if PCI
100 select SYS_HAS_EARLY_PRINTK
103 Support for BCM47XX based boards
106 bool "Broadcom BCM63XX based boards"
109 select DMA_NONCOHERENT
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_HAS_EARLY_PRINTK
116 select ARCH_REQUIRE_GPIOLIB
118 Support for BCM63XX based boards
125 select DMA_NONCOHERENT
131 select PCI_GT64XXX_PCI0
133 select SYS_HAS_CPU_NEVADA
134 select SYS_HAS_EARLY_PRINTK
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_64BIT_KERNEL
137 select SYS_SUPPORTS_LITTLE_ENDIAN
139 config MACH_DECSTATION
146 select CPU_DADDI_WORKAROUNDS if 64BIT
147 select CPU_R4000_WORKAROUNDS if 64BIT
148 select CPU_R4400_WORKAROUNDS if 64BIT
149 select DMA_NONCOHERENT
152 select SYS_HAS_CPU_R3000
153 select SYS_HAS_CPU_R4X00
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_128HZ
158 select SYS_SUPPORTS_256HZ
159 select SYS_SUPPORTS_1024HZ
161 This enables support for DEC's MIPS based workstations. For details
162 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
163 DECstation porting pages on <http://decstation.unix-ag.org/>.
165 If you have one of the following DECstation Models you definitely
166 want to choose R4xx0 for the CPU Type:
173 otherwise choose R3000.
176 bool "Jazz family of machines"
179 select ARCH_MAY_HAVE_PC_FDC
182 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
183 select GENERIC_ISA_DMA
188 select SYS_HAS_CPU_R4X00
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
191 select SYS_SUPPORTS_100HZ
193 This a family of machines based on the MIPS R4030 chipset which was
194 used by several vendors to build RISC/os and Windows NT workstations.
195 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
196 Olivetti M700-10 workstations.
199 bool "Ingenic JZ4740 based machines"
200 select SYS_HAS_CPU_MIPS32_R1
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_LITTLE_ENDIAN
203 select DMA_NONCOHERENT
206 select ARCH_REQUIRE_GPIOLIB
207 select SYS_HAS_EARLY_PRINTK
211 bool "LASAT Networks platforms"
214 select DMA_NONCOHERENT
215 select SYS_HAS_EARLY_PRINTK
218 select PCI_GT64XXX_PCI0
220 select R5000_CPU_SCACHE
221 select SYS_HAS_CPU_R5000
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
224 select SYS_SUPPORTS_LITTLE_ENDIAN
227 bool "Loongson family of machines"
228 select SYS_SUPPORTS_ZBOOT
230 This enables the support of Loongson family of machines.
232 Loongson is a family of general-purpose MIPS-compatible CPUs.
233 developed at Institute of Computing Technology (ICT),
234 Chinese Academy of Sciences (CAS) in the People's Republic
235 of China. The chief architect is Professor Weiwu Hu.
238 bool "MIPS Malta board"
239 select ARCH_MAY_HAVE_PC_FDC
244 select DMA_NONCOHERENT
245 select GENERIC_ISA_DMA
251 select MIPS_BOARDS_GEN
253 select MIPS_CPU_SCACHE
254 select PCI_GT64XXX_PCI0
257 select SYS_HAS_CPU_MIPS32_R1
258 select SYS_HAS_CPU_MIPS32_R2
259 select SYS_HAS_CPU_MIPS64_R1
260 select SYS_HAS_CPU_NEVADA
261 select SYS_HAS_CPU_RM7000
262 select SYS_HAS_EARLY_PRINTK
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_64BIT_KERNEL
265 select SYS_SUPPORTS_BIG_ENDIAN
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_SUPPORTS_MIPS_CMP
268 select SYS_SUPPORTS_MULTITHREADING
269 select SYS_SUPPORTS_SMARTMIPS
270 select SYS_SUPPORTS_ZBOOT
272 This enables support for the MIPS Technologies Malta evaluation
276 bool 'MIPS simulator (MIPSsim)'
279 select DMA_NONCOHERENT
280 select SYS_HAS_EARLY_PRINTK
283 select SYS_HAS_CPU_MIPS32_R1
284 select SYS_HAS_CPU_MIPS32_R2
285 select SYS_HAS_EARLY_PRINTK
286 select SYS_SUPPORTS_32BIT_KERNEL
287 select SYS_SUPPORTS_BIG_ENDIAN
288 select SYS_SUPPORTS_MULTITHREADING
289 select SYS_SUPPORTS_LITTLE_ENDIAN
291 This option enables support for MIPS Technologies MIPSsim software
295 bool "NEC EMMA2RH Mark-eins board"
299 This enables support for the NEC Electronics Mark-eins boards.
302 bool "NEC VR4100 series based machines"
305 select SYS_HAS_CPU_VR41XX
306 select ARCH_REQUIRE_GPIOLIB
309 bool "NXP STB220 board"
312 Support for NXP Semiconductors STB220 Development Board.
319 Support for NXP Semiconductors STB225 Development Board.
322 bool "NXP PNX8550 based JBS board"
324 select SYS_SUPPORTS_LITTLE_ENDIAN
326 config PNX8550_STB810
327 bool "NXP PNX8550 based STB810 board"
329 select SYS_SUPPORTS_LITTLE_ENDIAN
332 bool "PMC-Sierra MSP chipsets"
333 depends on EXPERIMENTAL
334 select DMA_NONCOHERENT
336 select NO_EXCEPT_FILL
338 select SYS_HAS_CPU_MIPS32_R1
339 select SYS_HAS_CPU_MIPS32_R2
340 select SYS_SUPPORTS_32BIT_KERNEL
341 select SYS_SUPPORTS_BIG_ENDIAN
344 select SERIAL_8250_CONSOLE
346 This adds support for the PMC-Sierra family of Multi-Service
347 Processor System-On-A-Chips. These parts include a number
348 of integrated peripherals, interfaces and DSPs in addition to
349 a variety of MIPS cores.
352 bool "PMC-Sierra Yosemite eval board"
361 select SYS_HAS_CPU_RM9000
362 select SYS_HAS_EARLY_PRINTK
363 select SYS_SUPPORTS_32BIT_KERNEL
364 select SYS_SUPPORTS_64BIT_KERNEL
365 select SYS_SUPPORTS_BIG_ENDIAN
366 select SYS_SUPPORTS_HIGHMEM
367 select SYS_SUPPORTS_SMP
369 Yosemite is an evaluation board for the RM9000x2 processor
370 manufactured by PMC-Sierra.
376 select CPU_MIPSR2_IRQ_VI
377 select CPU_MIPSR2_IRQ_EI
379 select DMA_NONCOHERENT
381 select SYS_HAS_EARLY_PRINTK
382 select SYS_HAS_CPU_MIPS32_R2
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_BIG_ENDIAN
385 select SYS_SUPPORTS_HIGHMEM
386 select USB_OHCI_LITTLE_ENDIAN
388 This enables support for the Cisco PowerTV Platform.
391 bool "SGI IP22 (Indy/Indigo2)"
397 select DEFAULT_SGI_PARTITION
398 select DMA_NONCOHERENT
402 select IP22_CPU_SCACHE
404 select GENERIC_ISA_DMA_SUPPORT_BROKEN
406 select SGI_HAS_INDYDOG
412 select SYS_HAS_CPU_R4X00
413 select SYS_HAS_CPU_R5000
415 # Disable EARLY_PRINTK for now since it leads to overwritten prom
416 # memory during early boot on some machines.
418 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
419 # for a more details discussion
421 # select SYS_HAS_EARLY_PRINTK
422 select SYS_SUPPORTS_32BIT_KERNEL
423 select SYS_SUPPORTS_64BIT_KERNEL
424 select SYS_SUPPORTS_BIG_ENDIAN
426 This are the SGI Indy, Challenge S and Indigo2, as well as certain
427 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
428 that runs on these, say Y here.
431 bool "SGI IP27 (Origin200/2000)"
435 select DEFAULT_SGI_PARTITION
437 select SYS_HAS_EARLY_PRINTK
439 select NR_CPUS_DEFAULT_64
440 select SYS_HAS_CPU_R10000
441 select SYS_SUPPORTS_64BIT_KERNEL
442 select SYS_SUPPORTS_BIG_ENDIAN
443 select SYS_SUPPORTS_NUMA
444 select SYS_SUPPORTS_SMP
446 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
447 workstations. To compile a Linux kernel that runs on these, say Y
451 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
452 depends on EXPERIMENTAL
458 select DEFAULT_SGI_PARTITION
459 select DMA_NONCOHERENT
460 select GENERIC_ISA_DMA_SUPPORT_BROKEN
466 select SGI_HAS_INDYDOG
472 select SYS_HAS_CPU_R10000
474 # Disable EARLY_PRINTK for now since it leads to overwritten prom
475 # memory during early boot on some machines.
477 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
478 # for a more details discussion
480 # select SYS_HAS_EARLY_PRINTK
481 select SYS_SUPPORTS_64BIT_KERNEL
482 select SYS_SUPPORTS_BIG_ENDIAN
484 This is the SGI Indigo2 with R10000 processor. To compile a Linux
485 kernel that runs on these, say Y here.
494 select DMA_NONCOHERENT
497 select R5000_CPU_SCACHE
498 select RM7000_CPU_SCACHE
499 select SYS_HAS_CPU_R5000
500 select SYS_HAS_CPU_R10000 if BROKEN
501 select SYS_HAS_CPU_RM7000
502 select SYS_HAS_CPU_NEVADA
503 select SYS_SUPPORTS_64BIT_KERNEL
504 select SYS_SUPPORTS_BIG_ENDIAN
506 If you want this kernel to run on SGI O2 workstation, say Y here.
509 bool "Sibyte BCM91120C-CRhine"
510 depends on EXPERIMENTAL
513 select SIBYTE_BCM1120
515 select SYS_HAS_CPU_SB1
516 select SYS_SUPPORTS_BIG_ENDIAN
517 select SYS_SUPPORTS_LITTLE_ENDIAN
520 bool "Sibyte BCM91120x-Carmel"
521 depends on EXPERIMENTAL
524 select SIBYTE_BCM1120
526 select SYS_HAS_CPU_SB1
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_LITTLE_ENDIAN
531 bool "Sibyte BCM91125C-CRhone"
532 depends on EXPERIMENTAL
535 select SIBYTE_BCM1125
537 select SYS_HAS_CPU_SB1
538 select SYS_SUPPORTS_BIG_ENDIAN
539 select SYS_SUPPORTS_HIGHMEM
540 select SYS_SUPPORTS_LITTLE_ENDIAN
543 bool "Sibyte BCM91125E-Rhone"
544 depends on EXPERIMENTAL
547 select SIBYTE_BCM1125H
549 select SYS_HAS_CPU_SB1
550 select SYS_SUPPORTS_BIG_ENDIAN
551 select SYS_SUPPORTS_LITTLE_ENDIAN
554 bool "Sibyte BCM91250A-SWARM"
557 select HAVE_PATA_PLATFORM
558 select NR_CPUS_DEFAULT_2
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_HIGHMEM
564 select SYS_SUPPORTS_LITTLE_ENDIAN
565 select ZONE_DMA32 if 64BIT
567 config SIBYTE_LITTLESUR
568 bool "Sibyte BCM91250C2-LittleSur"
569 depends on EXPERIMENTAL
572 select HAVE_PATA_PLATFORM
573 select NR_CPUS_DEFAULT_2
576 select SYS_HAS_CPU_SB1
577 select SYS_SUPPORTS_BIG_ENDIAN
578 select SYS_SUPPORTS_HIGHMEM
579 select SYS_SUPPORTS_LITTLE_ENDIAN
581 config SIBYTE_SENTOSA
582 bool "Sibyte BCM91250E-Sentosa"
583 depends on EXPERIMENTAL
586 select NR_CPUS_DEFAULT_2
589 select SYS_HAS_CPU_SB1
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_LITTLE_ENDIAN
594 bool "Sibyte BCM91480B-BigSur"
597 select NR_CPUS_DEFAULT_4
598 select SIBYTE_BCM1x80
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_HIGHMEM
603 select SYS_SUPPORTS_LITTLE_ENDIAN
604 select ZONE_DMA32 if 64BIT
607 bool "SNI RM200/300/400"
608 select ARC if CPU_LITTLE_ENDIAN
609 select ARC32 if CPU_LITTLE_ENDIAN
610 select SNIPROM if CPU_BIG_ENDIAN
611 select ARCH_MAY_HAVE_PC_FDC
615 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
616 select DMA_NONCOHERENT
617 select GENERIC_ISA_DMA
624 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
625 select SYS_HAS_CPU_R4X00
626 select SYS_HAS_CPU_R5000
627 select SYS_HAS_CPU_R10000
628 select R5000_CPU_SCACHE
629 select SYS_HAS_EARLY_PRINTK
630 select SYS_SUPPORTS_32BIT_KERNEL
631 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select SYS_SUPPORTS_HIGHMEM
634 select SYS_SUPPORTS_LITTLE_ENDIAN
636 The SNI RM200/300/400 are MIPS-based machines manufactured by
637 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
638 Technology and now in turn merged with Fujitsu. Say Y here to
639 support this machine type.
642 bool "Toshiba TX39 series based machines"
645 bool "Toshiba TX49 series based machines"
647 config MIKROTIK_RB532
648 bool "Mikrotik RB532 boards"
651 select DMA_NONCOHERENT
654 select SYS_HAS_CPU_MIPS32_R1
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_LITTLE_ENDIAN
659 select ARCH_REQUIRE_GPIOLIB
661 Support the Mikrotik(tm) RouterBoard 532 series,
662 based on the IDT RC32434 SoC.
665 bool "Wind River PPMC board"
670 select DMA_NONCOHERENT
672 select PCI_GT64XXX_PCI0
674 select SYS_HAS_CPU_MIPS32_R1
675 select SYS_HAS_CPU_MIPS32_R2
676 select SYS_HAS_CPU_MIPS64_R1
677 select SYS_HAS_CPU_NEVADA
678 select SYS_HAS_CPU_RM7000
679 select SYS_SUPPORTS_32BIT_KERNEL
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_LITTLE_ENDIAN
684 This enables support for the Wind River MIPS32 4KC PPMC evaluation
685 board, which is based on GT64120 bridge chip.
687 config CAVIUM_OCTEON_SIMULATOR
688 bool "Cavium Networks Octeon Simulator"
690 select 64BIT_PHYS_ADDR
692 select SYS_SUPPORTS_64BIT_KERNEL
693 select SYS_SUPPORTS_BIG_ENDIAN
694 select SYS_SUPPORTS_HIGHMEM
695 select SYS_SUPPORTS_HOTPLUG_CPU
696 select SYS_HAS_CPU_CAVIUM_OCTEON
698 The Octeon simulator is software performance model of the Cavium
699 Octeon Processor. It supports simulating Octeon processors on x86
702 config CAVIUM_OCTEON_REFERENCE_BOARD
703 bool "Cavium Networks Octeon reference board"
705 select 64BIT_PHYS_ADDR
707 select SYS_SUPPORTS_64BIT_KERNEL
708 select SYS_SUPPORTS_BIG_ENDIAN
709 select SYS_SUPPORTS_HIGHMEM
710 select SYS_SUPPORTS_HOTPLUG_CPU
711 select SYS_HAS_EARLY_PRINTK
712 select SYS_HAS_CPU_CAVIUM_OCTEON
715 select ARCH_SUPPORTS_MSI
717 select USB_ARCH_HAS_OHCI
718 select USB_ARCH_HAS_EHCI
720 This option supports all of the Octeon reference boards from Cavium
721 Networks. It builds a kernel that dynamically determines the Octeon
722 CPU type and supports all known board reference implementations.
723 Some of the supported boards are:
730 Say Y here for most Octeon reference boards.
734 source "arch/mips/alchemy/Kconfig"
735 source "arch/mips/ath79/Kconfig"
736 source "arch/mips/bcm63xx/Kconfig"
737 source "arch/mips/jazz/Kconfig"
738 source "arch/mips/jz4740/Kconfig"
739 source "arch/mips/lasat/Kconfig"
740 source "arch/mips/pmc-sierra/Kconfig"
741 source "arch/mips/powertv/Kconfig"
742 source "arch/mips/sgi-ip27/Kconfig"
743 source "arch/mips/sibyte/Kconfig"
744 source "arch/mips/txx9/Kconfig"
745 source "arch/mips/vr41xx/Kconfig"
746 source "arch/mips/cavium-octeon/Kconfig"
747 source "arch/mips/loongson/Kconfig"
751 config RWSEM_GENERIC_SPINLOCK
755 config RWSEM_XCHGADD_ALGORITHM
758 config ARCH_HAS_ILOG2_U32
762 config ARCH_HAS_ILOG2_U64
766 config ARCH_SUPPORTS_OPROFILE
768 default y if !MIPS_MT_SMTC
770 config GENERIC_FIND_NEXT_BIT
774 config GENERIC_HWEIGHT
778 config GENERIC_CALIBRATE_DELAY
782 config GENERIC_CLOCKEVENTS
786 config GENERIC_CMOS_UPDATE
790 config SCHED_OMIT_FRAME_POINTER
794 config GENERIC_HARDIRQS_NO__DO_IRQ
798 # Select some configuration options automatically based on user selections.
803 config ARCH_MAY_HAVE_PC_FDC
852 select ARCH_REQUIRE_GPIOLIB
861 config DMA_NONCOHERENT
863 select NEED_DMA_MAP_STATE
865 config NEED_DMA_MAP_STATE
868 config SYS_HAS_EARLY_PRINTK
872 bool "Support for hot-pluggable CPUs"
873 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
875 Say Y here to allow turning CPUs off and on. CPUs can be
876 controlled through /sys/devices/system/cpu.
877 (Note: power management support will enable this option
878 automatically on SMP systems. )
879 Say N if you want to disable CPU hotplug.
881 config SYS_SUPPORTS_HOTPLUG_CPU
896 config MIPS_DISABLE_OBSOLETE_IDE
908 config GENERIC_ISA_DMA
910 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
913 config GENERIC_ISA_DMA_SUPPORT_BROKEN
915 select GENERIC_ISA_DMA
924 # Endianess selection. Sufficiently obscure so many users don't know what to
925 # answer,so we try hard to limit the available choices. Also the use of a
926 # choice statement should be more obvious to the user.
929 prompt "Endianess selection"
931 Some MIPS machines can be configured for either little or big endian
932 byte order. These modes require different kernels and a different
933 Linux distribution. In general there is one preferred byteorder for a
934 particular system but some systems are just as commonly used in the
935 one or the other endianness.
937 config CPU_BIG_ENDIAN
939 depends on SYS_SUPPORTS_BIG_ENDIAN
941 config CPU_LITTLE_ENDIAN
943 depends on SYS_SUPPORTS_LITTLE_ENDIAN
951 config SYS_SUPPORTS_APM_EMULATION
954 config SYS_SUPPORTS_BIG_ENDIAN
957 config SYS_SUPPORTS_LITTLE_ENDIAN
960 config SYS_SUPPORTS_HUGETLBFS
962 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
989 config IRQ_CPU_OCTEON
992 config MIPS_BOARDS_GEN
995 config PCI_GT64XXX_PCI0
998 config NO_EXCEPT_FILL
1003 select SERIAL_RM9000
1009 select DMA_NONCOHERENT
1011 select SWAP_IO_SPACE
1012 select SYS_HAS_CPU_R5500
1013 select SYS_SUPPORTS_32BIT_KERNEL
1014 select SYS_SUPPORTS_64BIT_KERNEL
1015 select SYS_SUPPORTS_BIG_ENDIAN
1022 select DMA_NONCOHERENT
1023 select SYS_HAS_CPU_MIPS32_R2
1024 select SYS_SUPPORTS_32BIT_KERNEL
1025 select SYS_SUPPORTS_LITTLE_ENDIAN
1026 select SYS_SUPPORTS_BIG_ENDIAN
1028 select CPU_MIPSR2_IRQ_VI
1040 select DMA_NONCOHERENT
1042 select SYS_HAS_CPU_MIPS32_R1
1043 select SYS_HAS_EARLY_PRINTK
1044 select SYS_SUPPORTS_32BIT_KERNEL
1047 config SWAP_IO_SPACE
1050 config SERIAL_RM9000
1053 config SGI_HAS_INDYDOG
1065 config SGI_HAS_ZILOG
1068 config SGI_HAS_I8042
1071 config DEFAULT_SGI_PARTITION
1083 config MIPS_L1_CACHE_SHIFT
1085 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1086 default "6" if MIPS_CPU_SCACHE
1087 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1090 config HAVE_STD_PC_SERIAL_PORT
1094 bool "ARC console support"
1095 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1099 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1104 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1113 menu "CPU selection"
1119 config CPU_LOONGSON2E
1121 depends on SYS_HAS_CPU_LOONGSON2E
1122 select CPU_LOONGSON2
1124 The Loongson 2E processor implements the MIPS III instruction set
1125 with many extensions.
1127 It has an internal FPGA northbridge, which is compatiable to
1130 config CPU_LOONGSON2F
1132 depends on SYS_HAS_CPU_LOONGSON2F
1133 select CPU_LOONGSON2
1135 select ARCH_REQUIRE_GPIOLIB
1137 The Loongson 2F processor implements the MIPS III instruction set
1138 with many extensions.
1140 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1141 have a similar programming interface with FPGA northbridge used in
1144 config CPU_MIPS32_R1
1145 bool "MIPS32 Release 1"
1146 depends on SYS_HAS_CPU_MIPS32_R1
1147 select CPU_HAS_PREFETCH
1148 select CPU_SUPPORTS_32BIT_KERNEL
1149 select CPU_SUPPORTS_HIGHMEM
1151 Choose this option to build a kernel for release 1 or later of the
1152 MIPS32 architecture. Most modern embedded systems with a 32-bit
1153 MIPS processor are based on a MIPS32 processor. If you know the
1154 specific type of processor in your system, choose those that one
1155 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1156 Release 2 of the MIPS32 architecture is available since several
1157 years so chances are you even have a MIPS32 Release 2 processor
1158 in which case you should choose CPU_MIPS32_R2 instead for better
1161 config CPU_MIPS32_R2
1162 bool "MIPS32 Release 2"
1163 depends on SYS_HAS_CPU_MIPS32_R2
1164 select CPU_HAS_PREFETCH
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_HIGHMEM
1168 Choose this option to build a kernel for release 2 or later of the
1169 MIPS32 architecture. Most modern embedded systems with a 32-bit
1170 MIPS processor are based on a MIPS32 processor. If you know the
1171 specific type of processor in your system, choose those that one
1172 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1174 config CPU_MIPS64_R1
1175 bool "MIPS64 Release 1"
1176 depends on SYS_HAS_CPU_MIPS64_R1
1177 select CPU_HAS_PREFETCH
1178 select CPU_SUPPORTS_32BIT_KERNEL
1179 select CPU_SUPPORTS_64BIT_KERNEL
1180 select CPU_SUPPORTS_HIGHMEM
1181 select CPU_SUPPORTS_HUGEPAGES
1183 Choose this option to build a kernel for release 1 or later of the
1184 MIPS64 architecture. Many modern embedded systems with a 64-bit
1185 MIPS processor are based on a MIPS64 processor. If you know the
1186 specific type of processor in your system, choose those that one
1187 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1188 Release 2 of the MIPS64 architecture is available since several
1189 years so chances are you even have a MIPS64 Release 2 processor
1190 in which case you should choose CPU_MIPS64_R2 instead for better
1193 config CPU_MIPS64_R2
1194 bool "MIPS64 Release 2"
1195 depends on SYS_HAS_CPU_MIPS64_R2
1196 select CPU_HAS_PREFETCH
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_64BIT_KERNEL
1199 select CPU_SUPPORTS_HIGHMEM
1200 select CPU_SUPPORTS_HUGEPAGES
1202 Choose this option to build a kernel for release 2 or later of the
1203 MIPS64 architecture. Many modern embedded systems with a 64-bit
1204 MIPS processor are based on a MIPS64 processor. If you know the
1205 specific type of processor in your system, choose those that one
1206 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1210 depends on SYS_HAS_CPU_R3000
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_HIGHMEM
1215 Please make sure to pick the right CPU type. Linux/MIPS is not
1216 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1217 *not* work on R4000 machines and vice versa. However, since most
1218 of the supported machines have an R4000 (or similar) CPU, R4x00
1219 might be a safe bet. If the resulting kernel does not work,
1220 try to recompile with R3000.
1224 depends on SYS_HAS_CPU_TX39XX
1225 select CPU_SUPPORTS_32BIT_KERNEL
1229 depends on SYS_HAS_CPU_VR41XX
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1233 The options selects support for the NEC VR4100 series of processors.
1234 Only choose this option if you have one of these processors as a
1235 kernel built with this option will not run on any other type of
1236 processor or vice versa.
1240 depends on SYS_HAS_CPU_R4300
1241 select CPU_SUPPORTS_32BIT_KERNEL
1242 select CPU_SUPPORTS_64BIT_KERNEL
1244 MIPS Technologies R4300-series processors.
1248 depends on SYS_HAS_CPU_R4X00
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1252 MIPS Technologies R4000-series processors other than 4300, including
1253 the R4000, R4400, R4600, and 4700.
1257 depends on SYS_HAS_CPU_TX49XX
1258 select CPU_HAS_PREFETCH
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_64BIT_KERNEL
1264 depends on SYS_HAS_CPU_R5000
1265 select CPU_SUPPORTS_32BIT_KERNEL
1266 select CPU_SUPPORTS_64BIT_KERNEL
1268 MIPS Technologies R5000-series processors other than the Nevada.
1272 depends on SYS_HAS_CPU_R5432
1273 select CPU_SUPPORTS_32BIT_KERNEL
1274 select CPU_SUPPORTS_64BIT_KERNEL
1278 depends on SYS_HAS_CPU_R5500
1279 select CPU_SUPPORTS_32BIT_KERNEL
1280 select CPU_SUPPORTS_64BIT_KERNEL
1281 select CPU_SUPPORTS_HUGEPAGES
1283 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1288 depends on EXPERIMENTAL
1289 depends on SYS_HAS_CPU_R6000
1290 select CPU_SUPPORTS_32BIT_KERNEL
1292 MIPS Technologies R6000 and R6000A series processors. Note these
1293 processors are extremely rare and the support for them is incomplete.
1297 depends on SYS_HAS_CPU_NEVADA
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1301 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1305 depends on EXPERIMENTAL
1306 depends on SYS_HAS_CPU_R8000
1307 select CPU_HAS_PREFETCH
1308 select CPU_SUPPORTS_64BIT_KERNEL
1310 MIPS Technologies R8000 processors. Note these processors are
1311 uncommon and the support for them is incomplete.
1315 depends on SYS_HAS_CPU_R10000
1316 select CPU_HAS_PREFETCH
1317 select CPU_SUPPORTS_32BIT_KERNEL
1318 select CPU_SUPPORTS_64BIT_KERNEL
1319 select CPU_SUPPORTS_HIGHMEM
1321 MIPS Technologies R10000-series processors.
1325 depends on SYS_HAS_CPU_RM7000
1326 select CPU_HAS_PREFETCH
1327 select CPU_SUPPORTS_32BIT_KERNEL
1328 select CPU_SUPPORTS_64BIT_KERNEL
1329 select CPU_SUPPORTS_HIGHMEM
1333 depends on SYS_HAS_CPU_RM9000
1334 select CPU_HAS_PREFETCH
1335 select CPU_SUPPORTS_32BIT_KERNEL
1336 select CPU_SUPPORTS_64BIT_KERNEL
1337 select CPU_SUPPORTS_HIGHMEM
1338 select WEAK_ORDERING
1342 depends on SYS_HAS_CPU_SB1
1343 select CPU_SUPPORTS_32BIT_KERNEL
1344 select CPU_SUPPORTS_64BIT_KERNEL
1345 select CPU_SUPPORTS_HIGHMEM
1346 select WEAK_ORDERING
1348 config CPU_CAVIUM_OCTEON
1349 bool "Cavium Octeon processor"
1350 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1352 select IRQ_CPU_OCTEON
1353 select CPU_HAS_PREFETCH
1354 select CPU_SUPPORTS_64BIT_KERNEL
1355 select SYS_SUPPORTS_SMP
1356 select NR_CPUS_DEFAULT_16
1357 select WEAK_ORDERING
1358 select CPU_SUPPORTS_HIGHMEM
1359 select CPU_SUPPORTS_HUGEPAGES
1361 The Cavium Octeon processor is a highly integrated chip containing
1362 many ethernet hardware widgets for networking tasks. The processor
1363 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1364 Full details can be found at http://www.caviumnetworks.com.
1366 config CPU_BMIPS3300
1368 depends on SYS_HAS_CPU_BMIPS3300
1369 select DMA_NONCOHERENT
1371 select SWAP_IO_SPACE
1372 select SYS_SUPPORTS_32BIT_KERNEL
1373 select WEAK_ORDERING
1375 Broadcom BMIPS3300 processors.
1377 config CPU_BMIPS4350
1379 depends on SYS_HAS_CPU_BMIPS4350
1380 select CPU_SUPPORTS_32BIT_KERNEL
1381 select DMA_NONCOHERENT
1383 select SWAP_IO_SPACE
1384 select SYS_SUPPORTS_SMP
1385 select SYS_SUPPORTS_HOTPLUG_CPU
1386 select WEAK_ORDERING
1388 Broadcom BMIPS4350 ("VIPER") processors.
1390 config CPU_BMIPS4380
1392 depends on SYS_HAS_CPU_BMIPS4380
1393 select CPU_SUPPORTS_32BIT_KERNEL
1394 select DMA_NONCOHERENT
1396 select SWAP_IO_SPACE
1397 select SYS_SUPPORTS_SMP
1398 select SYS_SUPPORTS_HOTPLUG_CPU
1399 select WEAK_ORDERING
1401 Broadcom BMIPS4380 processors.
1403 config CPU_BMIPS5000
1405 depends on SYS_HAS_CPU_BMIPS5000
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_HIGHMEM
1408 select DMA_NONCOHERENT
1410 select SWAP_IO_SPACE
1411 select SYS_SUPPORTS_SMP
1412 select SYS_SUPPORTS_HOTPLUG_CPU
1413 select WEAK_ORDERING
1415 Broadcom BMIPS5000 processors.
1420 config CPU_NOP_WORKAROUNDS
1423 config CPU_JUMP_WORKAROUNDS
1426 config CPU_LOONGSON2F_WORKAROUNDS
1427 bool "Loongson 2F Workarounds"
1429 select CPU_NOP_WORKAROUNDS
1430 select CPU_JUMP_WORKAROUNDS
1432 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1433 require workarounds. Without workarounds the system may hang
1434 unexpectedly. For more information please refer to the gas
1435 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1437 Loongson 2F03 and later have fixed these issues and no workarounds
1438 are needed. The workarounds have no significant side effect on them
1439 but may decrease the performance of the system so this option should
1440 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1443 If unsure, please say Y.
1444 endif # CPU_LOONGSON2F
1446 config SYS_SUPPORTS_ZBOOT
1448 select HAVE_KERNEL_GZIP
1449 select HAVE_KERNEL_BZIP2
1450 select HAVE_KERNEL_LZMA
1451 select HAVE_KERNEL_LZO
1453 config SYS_SUPPORTS_ZBOOT_UART16550
1455 select SYS_SUPPORTS_ZBOOT
1457 config CPU_LOONGSON2
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_64BIT_KERNEL
1461 select CPU_SUPPORTS_HIGHMEM
1463 config SYS_HAS_CPU_LOONGSON2E
1466 config SYS_HAS_CPU_LOONGSON2F
1468 select CPU_SUPPORTS_CPUFREQ
1469 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1470 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1472 config SYS_HAS_CPU_MIPS32_R1
1475 config SYS_HAS_CPU_MIPS32_R2
1478 config SYS_HAS_CPU_MIPS64_R1
1481 config SYS_HAS_CPU_MIPS64_R2
1484 config SYS_HAS_CPU_R3000
1487 config SYS_HAS_CPU_TX39XX
1490 config SYS_HAS_CPU_VR41XX
1493 config SYS_HAS_CPU_R4300
1496 config SYS_HAS_CPU_R4X00
1499 config SYS_HAS_CPU_TX49XX
1502 config SYS_HAS_CPU_R5000
1505 config SYS_HAS_CPU_R5432
1508 config SYS_HAS_CPU_R5500
1511 config SYS_HAS_CPU_R6000
1514 config SYS_HAS_CPU_NEVADA
1517 config SYS_HAS_CPU_R8000
1520 config SYS_HAS_CPU_R10000
1523 config SYS_HAS_CPU_RM7000
1526 config SYS_HAS_CPU_RM9000
1529 config SYS_HAS_CPU_SB1
1532 config SYS_HAS_CPU_CAVIUM_OCTEON
1535 config SYS_HAS_CPU_BMIPS3300
1538 config SYS_HAS_CPU_BMIPS4350
1541 config SYS_HAS_CPU_BMIPS4380
1544 config SYS_HAS_CPU_BMIPS5000
1548 # CPU may reorder R->R, R->W, W->R, W->W
1549 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1551 config WEAK_ORDERING
1555 # CPU may reorder reads and writes beyond LL/SC
1556 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1558 config WEAK_REORDERING_BEYOND_LLSC
1563 # These two indicate any level of the MIPS32 and MIPS64 architecture
1567 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1571 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1574 # These two indicate the revision of the architecture, either Release 1 or Release 2
1578 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1582 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1584 config SYS_SUPPORTS_32BIT_KERNEL
1586 config SYS_SUPPORTS_64BIT_KERNEL
1588 config CPU_SUPPORTS_32BIT_KERNEL
1590 config CPU_SUPPORTS_64BIT_KERNEL
1592 config CPU_SUPPORTS_CPUFREQ
1594 config CPU_SUPPORTS_ADDRWINCFG
1596 config CPU_SUPPORTS_HUGEPAGES
1598 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1600 config MIPS_PGD_C0_CONTEXT
1602 default y if 64BIT && CPU_MIPSR2
1605 # Set to y for ptrace access to watch registers.
1607 config HARDWARE_WATCHPOINTS
1609 default y if CPU_MIPSR1 || CPU_MIPSR2
1615 prompt "Kernel code model"
1617 You should only select this option if you have a workload that
1618 actually benefits from 64-bit processing or if your machine has
1619 large memory. You will only be presented a single option in this
1620 menu if your system does not support both 32-bit and 64-bit kernels.
1623 bool "32-bit kernel"
1624 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1627 Select this option if you want to build a 32-bit kernel.
1629 bool "64-bit kernel"
1630 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1631 select HAVE_SYSCALL_WRAPPERS
1633 Select this option if you want to build a 64-bit kernel.
1638 prompt "Kernel page size"
1639 default PAGE_SIZE_4KB
1641 config PAGE_SIZE_4KB
1643 depends on !CPU_LOONGSON2
1645 This option select the standard 4kB Linux page size. On some
1646 R3000-family processors this is the only available page size. Using
1647 4kB page size will minimize memory consumption and is therefore
1648 recommended for low memory systems.
1650 config PAGE_SIZE_8KB
1652 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1654 Using 8kB page size will result in higher performance kernel at
1655 the price of higher memory consumption. This option is available
1656 only on R8000 and cnMIPS processors. Note that you will need a
1657 suitable Linux distribution to support this.
1659 config PAGE_SIZE_16KB
1661 depends on !CPU_R3000 && !CPU_TX39XX
1663 Using 16kB page size will result in higher performance kernel at
1664 the price of higher memory consumption. This option is available on
1665 all non-R3000 family processors. Note that you will need a suitable
1666 Linux distribution to support this.
1668 config PAGE_SIZE_32KB
1670 depends on CPU_CAVIUM_OCTEON
1672 Using 32kB page size will result in higher performance kernel at
1673 the price of higher memory consumption. This option is available
1674 only on cnMIPS cores. Note that you will need a suitable Linux
1675 distribution to support this.
1677 config PAGE_SIZE_64KB
1679 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1681 Using 64kB page size will result in higher performance kernel at
1682 the price of higher memory consumption. This option is available on
1683 all non-R3000 family processor. Not that at the time of this
1684 writing this option is still high experimental.
1688 config FORCE_MAX_ZONEORDER
1689 int "Maximum zone order"
1690 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1691 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1692 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1693 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1697 The kernel memory allocator divides physically contiguous memory
1698 blocks into "zones", where each zone is a power of two number of
1699 pages. This option selects the largest power of two that the kernel
1700 keeps in the memory allocator. If you need to allocate very large
1701 blocks of physically contiguous memory, then you may need to
1702 increase this value.
1704 This config option is actually maximum order plus one. For example,
1705 a value of 11 means that the largest free memory block is 2^10 pages.
1707 The page size is not necessarily 4KB. Keep this in mind
1708 when choosing a value for this option.
1713 config IP22_CPU_SCACHE
1718 # Support for a MIPS32 / MIPS64 style S-caches
1720 config MIPS_CPU_SCACHE
1724 config R5000_CPU_SCACHE
1728 config RM7000_CPU_SCACHE
1732 config SIBYTE_DMA_PAGEOPS
1733 bool "Use DMA to clear/copy pages"
1736 Instead of using the CPU to zero and copy pages, use a Data Mover
1737 channel. These DMA channels are otherwise unused by the standard
1738 SiByte Linux port. Seems to give a small performance benefit.
1740 config CPU_HAS_PREFETCH
1744 prompt "MIPS MT options"
1746 config MIPS_MT_DISABLED
1747 bool "Disable multithreading support."
1749 Use this option if your workload can't take advantage of
1750 MIPS hardware multithreading support. On systems that don't have
1751 the option of an MT-enabled processor this option will be the only
1752 option in this menu.
1755 bool "Use 1 TC on each available VPE for SMP"
1756 depends on SYS_SUPPORTS_MULTITHREADING
1757 select CPU_MIPSR2_IRQ_VI
1758 select CPU_MIPSR2_IRQ_EI
1760 select NR_CPUS_DEFAULT_2
1762 select SYS_SUPPORTS_SCHED_SMT if SMP
1763 select SYS_SUPPORTS_SMP
1766 This is a kernel model which is known a VSMP but lately has been
1767 marketesed into SMVP.
1768 Virtual SMP uses the processor's VPEs to implement virtual
1769 processors. In currently available configuration of the 34K processor
1770 this allows for a dual processor. Both processors will share the same
1771 primary caches; each will obtain the half of the TLB for it's own
1772 exclusive use. For a layman this model can be described as similar to
1773 what Intel calls Hyperthreading.
1775 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1778 bool "SMTC: Use all TCs on all VPEs for SMP"
1779 depends on CPU_MIPS32_R2
1780 #depends on CPU_MIPS64_R2 # once there is hardware ...
1781 depends on SYS_SUPPORTS_MULTITHREADING
1782 select CPU_MIPSR2_IRQ_VI
1783 select CPU_MIPSR2_IRQ_EI
1785 select NR_CPUS_DEFAULT_8
1787 select SYS_SUPPORTS_SMP
1790 This is a kernel model which is known a SMTC or lately has been
1791 marketesed into SMVP.
1792 is presenting the available TC's of the core as processors to Linux.
1793 On currently available 34K processors this means a Linux system will
1794 see up to 5 processors. The implementation of the SMTC kernel differs
1795 significantly from VSMP and cannot efficiently coexist in the same
1796 kernel binary so the choice between VSMP and SMTC is a compile time
1799 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1807 bool "SMT (multithreading) scheduler support"
1808 depends on SYS_SUPPORTS_SCHED_SMT
1811 SMT scheduler support improves the CPU scheduler's decision making
1812 when dealing with MIPS MT enabled cores at a cost of slightly
1813 increased overhead in some places. If unsure say N here.
1815 config SYS_SUPPORTS_SCHED_SMT
1819 config SYS_SUPPORTS_MULTITHREADING
1822 config MIPS_MT_FPAFF
1823 bool "Dynamic FPU affinity for FP-intensive threads"
1825 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1827 config MIPS_VPE_LOADER
1828 bool "VPE loader support."
1829 depends on SYS_SUPPORTS_MULTITHREADING
1830 select CPU_MIPSR2_IRQ_VI
1831 select CPU_MIPSR2_IRQ_EI
1834 Includes a loader for loading an elf relocatable object
1835 onto another VPE and running it.
1837 config MIPS_MT_SMTC_IM_BACKSTOP
1838 bool "Use per-TC register bits as backstop for inhibited IM bits"
1839 depends on MIPS_MT_SMTC
1842 To support multiple TC microthreads acting as "CPUs" within
1843 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1844 during interrupt handling. To support legacy drivers and interrupt
1845 controller management code, SMTC has a "backstop" to track and
1846 if necessary restore the interrupt mask. This has some performance
1847 impact on interrupt service overhead.
1849 config MIPS_MT_SMTC_IRQAFF
1850 bool "Support IRQ affinity API"
1851 depends on MIPS_MT_SMTC
1854 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1855 for SMTC Linux kernel. Requires platform support, of which
1856 an example can be found in the MIPS kernel i8259 and Malta
1857 platform code. Adds some overhead to interrupt dispatch, and
1858 should be used only if you know what you are doing.
1860 config MIPS_VPE_LOADER_TOM
1861 bool "Load VPE program into memory hidden from linux"
1862 depends on MIPS_VPE_LOADER
1865 The loader can use memory that is present but has been hidden from
1866 Linux using the kernel command line option "mem=xxMB". It's up to
1867 you to ensure the amount you put in the option and the space your
1868 program requires is less or equal to the amount physically present.
1870 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1871 config MIPS_VPE_APSP_API
1872 bool "Enable support for AP/SP API (RTLX)"
1873 depends on MIPS_VPE_LOADER
1876 config MIPS_APSP_KSPD
1878 depends on MIPS_VPE_APSP_API
1881 KSPD is a kernel daemon that accepts syscall requests from the SP
1882 side, actions them and returns the results. It also handles the
1883 "exit" syscall notifying other kernel modules the SP program is
1884 exiting. You probably want to say yes here.
1887 bool "MIPS CMP framework support"
1888 depends on SYS_SUPPORTS_MIPS_CMP
1890 select SYS_SUPPORTS_SMP
1891 select SYS_SUPPORTS_SCHED_SMT if SMP
1892 select WEAK_ORDERING
1895 This is a placeholder option for the GCMP work. It will need to
1896 be handled differently...
1898 config SB1_PASS_1_WORKAROUNDS
1900 depends on CPU_SB1_PASS_1
1903 config SB1_PASS_2_WORKAROUNDS
1905 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1908 config SB1_PASS_2_1_WORKAROUNDS
1910 depends on CPU_SB1 && CPU_SB1_PASS_2
1913 config 64BIT_PHYS_ADDR
1916 config ARCH_PHYS_ADDR_T_64BIT
1917 def_bool 64BIT_PHYS_ADDR
1919 config CPU_HAS_SMARTMIPS
1920 depends on SYS_SUPPORTS_SMARTMIPS
1921 bool "Support for the SmartMIPS ASE"
1923 SmartMIPS is a extension of the MIPS32 architecture aimed at
1924 increased security at both hardware and software level for
1925 smartcards. Enabling this option will allow proper use of the
1926 SmartMIPS instructions by Linux applications. However a kernel with
1927 this option will not work on a MIPS core without SmartMIPS core. If
1928 you don't know you probably don't have SmartMIPS and should say N
1935 # Vectored interrupt mode is an R2 feature
1937 config CPU_MIPSR2_IRQ_VI
1941 # Extended interrupt mode is an R2 feature
1943 config CPU_MIPSR2_IRQ_EI
1948 depends on !CPU_R3000
1951 config GENERIC_CLOCKEVENTS_BROADCAST
1957 config CPU_DADDI_WORKAROUNDS
1960 config CPU_R4000_WORKAROUNDS
1962 select CPU_R4400_WORKAROUNDS
1964 config CPU_R4400_WORKAROUNDS
1968 # - Highmem only makes sense for the 32-bit kernel.
1969 # - The current highmem code will only work properly on physically indexed
1970 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1971 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1972 # moment we protect the user and offer the highmem option only on machines
1973 # where it's known to be safe. This will not offer highmem on a few systems
1974 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1975 # indexed CPUs but we're playing safe.
1976 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1977 # know they might have memory configurations that could make use of highmem
1981 bool "High Memory Support"
1982 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1984 config CPU_SUPPORTS_HIGHMEM
1987 config SYS_SUPPORTS_HIGHMEM
1990 config SYS_SUPPORTS_SMARTMIPS
1993 config ARCH_FLATMEM_ENABLE
1995 depends on !NUMA && !CPU_LOONGSON2
1997 config ARCH_DISCONTIGMEM_ENABLE
1999 default y if SGI_IP27
2001 Say Y to support efficient handling of discontiguous physical memory,
2002 for architectures which are either NUMA (Non-Uniform Memory Access)
2003 or have huge holes in the physical address space for other reasons.
2004 See <file:Documentation/vm/numa> for more.
2006 config ARCH_POPULATES_NODE_MAP
2009 config ARCH_SPARSEMEM_ENABLE
2011 select SPARSEMEM_STATIC
2015 depends on SYS_SUPPORTS_NUMA
2017 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2018 Access). This option improves performance on systems with more
2019 than two nodes; on two node systems it is generally better to
2020 leave it disabled; on single node systems disable this option
2023 config SYS_SUPPORTS_NUMA
2029 depends on NEED_MULTIPLE_NODES
2031 config HW_PERF_EVENTS
2032 bool "Enable hardware performance counter support for perf events"
2033 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2036 Enable hardware performance counter support for perf events. If
2037 disabled, perf events will use software events only.
2042 bool "Multi-Processing support"
2043 depends on SYS_SUPPORTS_SMP
2045 select USE_GENERIC_SMP_HELPERS
2047 This enables support for systems with more than one CPU. If you have
2048 a system with only one CPU, like most personal computers, say N. If
2049 you have a system with more than one CPU, say Y.
2051 If you say N here, the kernel will run on single and multiprocessor
2052 machines, but will use only one CPU of a multiprocessor machine. If
2053 you say Y here, the kernel will run on many, but not all,
2054 singleprocessor machines. On a singleprocessor machine, the kernel
2055 will run faster if you say N here.
2057 People using multiprocessor machines who say Y here should also say
2058 Y to "Enhanced Real Time Clock Support", below.
2060 See also the SMP-HOWTO available at
2061 <http://www.tldp.org/docs.html#howto>.
2063 If you don't know what to do here, say N.
2068 config SYS_SUPPORTS_MIPS_CMP
2071 config SYS_SUPPORTS_SMP
2074 config NR_CPUS_DEFAULT_1
2077 config NR_CPUS_DEFAULT_2
2080 config NR_CPUS_DEFAULT_4
2083 config NR_CPUS_DEFAULT_8
2086 config NR_CPUS_DEFAULT_16
2089 config NR_CPUS_DEFAULT_32
2092 config NR_CPUS_DEFAULT_64
2096 int "Maximum number of CPUs (2-64)"
2097 range 1 64 if NR_CPUS_DEFAULT_1
2099 default "1" if NR_CPUS_DEFAULT_1
2100 default "2" if NR_CPUS_DEFAULT_2
2101 default "4" if NR_CPUS_DEFAULT_4
2102 default "8" if NR_CPUS_DEFAULT_8
2103 default "16" if NR_CPUS_DEFAULT_16
2104 default "32" if NR_CPUS_DEFAULT_32
2105 default "64" if NR_CPUS_DEFAULT_64
2107 This allows you to specify the maximum number of CPUs which this
2108 kernel will support. The maximum supported value is 32 for 32-bit
2109 kernel and 64 for 64-bit kernels; the minimum value which makes
2110 sense is 1 for Qemu (useful only for kernel debugging purposes)
2111 and 2 for all others.
2113 This is purely to save memory - each supported CPU adds
2114 approximately eight kilobytes to the kernel image. For best
2115 performance should round up your number of processors to the next
2118 source "kernel/time/Kconfig"
2121 # Timer Interrupt Frequency Configuration
2125 prompt "Timer frequency"
2128 Allows the configuration of the timer frequency.
2131 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2134 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2137 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2140 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2143 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2146 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2149 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2153 config SYS_SUPPORTS_48HZ
2156 config SYS_SUPPORTS_100HZ
2159 config SYS_SUPPORTS_128HZ
2162 config SYS_SUPPORTS_250HZ
2165 config SYS_SUPPORTS_256HZ
2168 config SYS_SUPPORTS_1000HZ
2171 config SYS_SUPPORTS_1024HZ
2174 config SYS_SUPPORTS_ARBIT_HZ
2176 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2177 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2178 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2179 !SYS_SUPPORTS_1024HZ
2184 default 100 if HZ_100
2185 default 128 if HZ_128
2186 default 250 if HZ_250
2187 default 256 if HZ_256
2188 default 1000 if HZ_1000
2189 default 1024 if HZ_1024
2191 source "kernel/Kconfig.preempt"
2193 config MIPS_INSANE_LARGE
2194 bool "Support for large 64-bit configurations"
2195 depends on CPU_R10000 && 64BIT
2197 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2198 previous 64-bit processors which only supported 40 bit / 1TB. If you
2199 need processes of more than 1TB virtual address space, say Y here.
2200 This will result in additional memory usage, so it is not
2201 recommended for normal users.
2204 bool "Kexec system call (EXPERIMENTAL)"
2205 depends on EXPERIMENTAL
2207 kexec is a system call that implements the ability to shutdown your
2208 current kernel, and to start another kernel. It is like a reboot
2209 but it is independent of the system firmware. And like a reboot
2210 you can start any kernel with it, not just Linux.
2212 The name comes from the similarity to the exec system call.
2214 It is an ongoing process to be certain the hardware in a machine
2215 is properly shutdown, so do not be surprised if this code does not
2216 initially work for you. It may help to enable device hotplugging
2217 support. As of this writing the exact hardware interface is
2218 strongly in flux, so no good recommendation can be made.
2221 bool "Enable seccomp to safely compute untrusted bytecode"
2225 This kernel feature is useful for number crunching applications
2226 that may need to compute untrusted bytecode during their
2227 execution. By using pipes or other transports made available to
2228 the process as file descriptors supporting the read/write
2229 syscalls, it's possible to isolate those applications in
2230 their own address space using seccomp. Once seccomp is
2231 enabled via /proc/<pid>/seccomp, it cannot be disabled
2232 and the task is only allowed to execute a few safe syscalls
2233 defined by each seccomp mode.
2235 If unsure, say Y. Only embedded should say N here.
2238 bool "Flattened Device Tree support"
2240 select OF_EARLY_FLATTREE
2242 Include support for flattened device tree machine descriptions.
2246 config LOCKDEP_SUPPORT
2250 config STACKTRACE_SUPPORT
2254 source "init/Kconfig"
2256 source "kernel/Kconfig.freezer"
2258 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2266 bool "Support for PCI controller"
2267 depends on HW_HAS_PCI
2270 Find out whether you have a PCI motherboard. PCI is the name of a
2271 bus system, i.e. the way the CPU talks to the other stuff inside
2272 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2278 source "drivers/pci/Kconfig"
2281 # ISA support is now enabled via select. Too many systems still have the one
2282 # or other ISA chip on the board that users don't know about so don't expect
2283 # users to choose the right thing ...
2290 depends on HW_HAS_EISA
2292 select GENERIC_ISA_DMA
2294 The Extended Industry Standard Architecture (EISA) bus was
2295 developed as an open alternative to the IBM MicroChannel bus.
2297 The EISA bus provided some of the features of the IBM MicroChannel
2298 bus while maintaining backward compatibility with cards made for
2299 the older ISA bus. The EISA bus saw limited use between 1988 and
2300 1995 when it was made obsolete by the PCI bus.
2302 Say Y here if you are building a kernel for an EISA-based machine.
2306 source "drivers/eisa/Kconfig"
2309 bool "TURBOchannel support"
2310 depends on MACH_DECSTATION
2312 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2313 processors. TURBOchannel programming specifications are available
2315 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2317 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2318 Linux driver support status is documented at:
2319 <http://www.linux-mips.org/wiki/DECstation>
2322 # bool "Access.Bus support"
2331 select MIPS_EXTERNAL_TIMER
2336 source "drivers/pcmcia/Kconfig"
2338 source "drivers/pci/hotplug/Kconfig"
2342 menu "Executable file formats"
2344 source "fs/Kconfig.binfmt"
2349 config MIPS32_COMPAT
2350 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2353 Select this option if you want Linux/MIPS 32-bit binary
2354 compatibility. Since all software available for Linux/MIPS is
2355 currently 32-bit you should say Y here.
2359 depends on MIPS32_COMPAT
2362 config SYSVIPC_COMPAT
2364 depends on COMPAT && SYSVIPC
2368 bool "Kernel support for o32 binaries"
2369 depends on MIPS32_COMPAT
2371 Select this option if you want to run o32 binaries. These are pure
2372 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2373 existing binaries are in this format.
2378 bool "Kernel support for n32 binaries"
2379 depends on MIPS32_COMPAT
2381 Select this option if you want to run n32 binaries. These are
2382 64-bit binaries using 32-bit quantities for addressing and certain
2383 data that would normally be 64-bit. They are used in special
2390 default y if MIPS32_O32 || MIPS32_N32
2394 menu "Power management options"
2396 config ARCH_HIBERNATION_POSSIBLE
2398 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2400 config ARCH_SUSPEND_POSSIBLE
2402 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2404 source "kernel/power/Kconfig"
2408 source "arch/mips/kernel/cpufreq/Kconfig"
2410 source "net/Kconfig"
2412 source "drivers/Kconfig"
2416 source "arch/mips/Kconfig.debug"
2418 source "security/Kconfig"
2420 source "crypto/Kconfig"
2422 source "lib/Kconfig"