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"
71 select ARCH_REQUIRE_GPIOLIB
75 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R2
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_BIG_ENDIAN
83 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
86 bool "Broadcom BCM47XX based boards"
89 select DMA_NONCOHERENT
92 select SYS_HAS_CPU_MIPS32_R1
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SSB_DRIVER_MIPS
97 select SSB_DRIVER_EXTIF
99 select SSB_B43_PCI_BRIDGE if PCI
100 select SSB_PCICORE_HOSTMODE if PCI
102 select SYS_HAS_EARLY_PRINTK
105 Support for BCM47XX based boards
108 bool "Broadcom BCM63XX based boards"
111 select DMA_NONCOHERENT
113 select SYS_HAS_CPU_MIPS32_R1
114 select SYS_SUPPORTS_32BIT_KERNEL
115 select SYS_SUPPORTS_BIG_ENDIAN
116 select SYS_HAS_EARLY_PRINTK
118 select ARCH_REQUIRE_GPIOLIB
120 Support for BCM63XX based boards
127 select DMA_NONCOHERENT
133 select PCI_GT64XXX_PCI0
135 select SYS_HAS_CPU_NEVADA
136 select SYS_HAS_EARLY_PRINTK
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_64BIT_KERNEL
139 select SYS_SUPPORTS_LITTLE_ENDIAN
141 config MACH_DECSTATION
148 select CPU_DADDI_WORKAROUNDS if 64BIT
149 select CPU_R4000_WORKAROUNDS if 64BIT
150 select CPU_R4400_WORKAROUNDS if 64BIT
151 select DMA_NONCOHERENT
154 select SYS_HAS_CPU_R3000
155 select SYS_HAS_CPU_R4X00
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
158 select SYS_SUPPORTS_LITTLE_ENDIAN
159 select SYS_SUPPORTS_128HZ
160 select SYS_SUPPORTS_256HZ
161 select SYS_SUPPORTS_1024HZ
163 This enables support for DEC's MIPS based workstations. For details
164 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
165 DECstation porting pages on <http://decstation.unix-ag.org/>.
167 If you have one of the following DECstation Models you definitely
168 want to choose R4xx0 for the CPU Type:
175 otherwise choose R3000.
178 bool "Jazz family of machines"
181 select ARCH_MAY_HAVE_PC_FDC
184 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
185 select GENERIC_ISA_DMA
190 select SYS_HAS_CPU_R4X00
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
193 select SYS_SUPPORTS_100HZ
195 This a family of machines based on the MIPS R4030 chipset which was
196 used by several vendors to build RISC/os and Windows NT workstations.
197 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
198 Olivetti M700-10 workstations.
201 bool "Ingenic JZ4740 based machines"
202 select SYS_HAS_CPU_MIPS32_R1
203 select SYS_SUPPORTS_32BIT_KERNEL
204 select SYS_SUPPORTS_LITTLE_ENDIAN
205 select DMA_NONCOHERENT
208 select ARCH_REQUIRE_GPIOLIB
209 select SYS_HAS_EARLY_PRINTK
213 bool "LASAT Networks platforms"
216 select DMA_NONCOHERENT
217 select SYS_HAS_EARLY_PRINTK
220 select PCI_GT64XXX_PCI0
222 select R5000_CPU_SCACHE
223 select SYS_HAS_CPU_R5000
224 select SYS_SUPPORTS_32BIT_KERNEL
225 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
226 select SYS_SUPPORTS_LITTLE_ENDIAN
229 bool "Loongson family of machines"
230 select SYS_SUPPORTS_ZBOOT
232 This enables the support of Loongson family of machines.
234 Loongson is a family of general-purpose MIPS-compatible CPUs.
235 developed at Institute of Computing Technology (ICT),
236 Chinese Academy of Sciences (CAS) in the People's Republic
237 of China. The chief architect is Professor Weiwu Hu.
240 bool "MIPS Malta board"
241 select ARCH_MAY_HAVE_PC_FDC
246 select DMA_NONCOHERENT
247 select GENERIC_ISA_DMA
253 select MIPS_BOARDS_GEN
255 select MIPS_CPU_SCACHE
256 select PCI_GT64XXX_PCI0
259 select SYS_HAS_CPU_MIPS32_R1
260 select SYS_HAS_CPU_MIPS32_R2
261 select SYS_HAS_CPU_MIPS64_R1
262 select SYS_HAS_CPU_NEVADA
263 select SYS_HAS_CPU_RM7000
264 select SYS_HAS_EARLY_PRINTK
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_64BIT_KERNEL
267 select SYS_SUPPORTS_BIG_ENDIAN
268 select SYS_SUPPORTS_LITTLE_ENDIAN
269 select SYS_SUPPORTS_MIPS_CMP
270 select SYS_SUPPORTS_MULTITHREADING
271 select SYS_SUPPORTS_SMARTMIPS
272 select SYS_SUPPORTS_ZBOOT
274 This enables support for the MIPS Technologies Malta evaluation
278 bool 'MIPS simulator (MIPSsim)'
281 select DMA_NONCOHERENT
282 select SYS_HAS_EARLY_PRINTK
285 select SYS_HAS_CPU_MIPS32_R1
286 select SYS_HAS_CPU_MIPS32_R2
287 select SYS_HAS_EARLY_PRINTK
288 select SYS_SUPPORTS_32BIT_KERNEL
289 select SYS_SUPPORTS_BIG_ENDIAN
290 select SYS_SUPPORTS_MULTITHREADING
291 select SYS_SUPPORTS_LITTLE_ENDIAN
293 This option enables support for MIPS Technologies MIPSsim software
297 bool "NEC EMMA2RH Mark-eins board"
301 This enables support for the NEC Electronics Mark-eins boards.
304 bool "NEC VR4100 series based machines"
307 select SYS_HAS_CPU_VR41XX
308 select ARCH_REQUIRE_GPIOLIB
311 bool "NXP STB220 board"
314 Support for NXP Semiconductors STB220 Development Board.
321 Support for NXP Semiconductors STB225 Development Board.
324 bool "NXP PNX8550 based JBS board"
326 select SYS_SUPPORTS_LITTLE_ENDIAN
328 config PNX8550_STB810
329 bool "NXP PNX8550 based STB810 board"
331 select SYS_SUPPORTS_LITTLE_ENDIAN
334 bool "PMC-Sierra MSP chipsets"
335 depends on EXPERIMENTAL
336 select DMA_NONCOHERENT
338 select NO_EXCEPT_FILL
340 select SYS_HAS_CPU_MIPS32_R1
341 select SYS_HAS_CPU_MIPS32_R2
342 select SYS_SUPPORTS_32BIT_KERNEL
343 select SYS_SUPPORTS_BIG_ENDIAN
346 select SERIAL_8250_CONSOLE
348 This adds support for the PMC-Sierra family of Multi-Service
349 Processor System-On-A-Chips. These parts include a number
350 of integrated peripherals, interfaces and DSPs in addition to
351 a variety of MIPS cores.
354 bool "PMC-Sierra Yosemite eval board"
363 select SYS_HAS_CPU_RM9000
364 select SYS_HAS_EARLY_PRINTK
365 select SYS_SUPPORTS_32BIT_KERNEL
366 select SYS_SUPPORTS_64BIT_KERNEL
367 select SYS_SUPPORTS_BIG_ENDIAN
368 select SYS_SUPPORTS_HIGHMEM
369 select SYS_SUPPORTS_SMP
371 Yosemite is an evaluation board for the RM9000x2 processor
372 manufactured by PMC-Sierra.
378 select CPU_MIPSR2_IRQ_VI
379 select CPU_MIPSR2_IRQ_EI
381 select DMA_NONCOHERENT
383 select SYS_HAS_EARLY_PRINTK
384 select SYS_HAS_CPU_MIPS32_R2
385 select SYS_SUPPORTS_32BIT_KERNEL
386 select SYS_SUPPORTS_BIG_ENDIAN
387 select SYS_SUPPORTS_HIGHMEM
388 select USB_OHCI_LITTLE_ENDIAN
390 This enables support for the Cisco PowerTV Platform.
393 bool "SGI IP22 (Indy/Indigo2)"
399 select DEFAULT_SGI_PARTITION
400 select DMA_NONCOHERENT
404 select IP22_CPU_SCACHE
406 select GENERIC_ISA_DMA_SUPPORT_BROKEN
408 select SGI_HAS_INDYDOG
414 select SYS_HAS_CPU_R4X00
415 select SYS_HAS_CPU_R5000
417 # Disable EARLY_PRINTK for now since it leads to overwritten prom
418 # memory during early boot on some machines.
420 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
421 # for a more details discussion
423 # select SYS_HAS_EARLY_PRINTK
424 select SYS_SUPPORTS_32BIT_KERNEL
425 select SYS_SUPPORTS_64BIT_KERNEL
426 select SYS_SUPPORTS_BIG_ENDIAN
428 This are the SGI Indy, Challenge S and Indigo2, as well as certain
429 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
430 that runs on these, say Y here.
433 bool "SGI IP27 (Origin200/2000)"
437 select DEFAULT_SGI_PARTITION
439 select SYS_HAS_EARLY_PRINTK
441 select NR_CPUS_DEFAULT_64
442 select SYS_HAS_CPU_R10000
443 select SYS_SUPPORTS_64BIT_KERNEL
444 select SYS_SUPPORTS_BIG_ENDIAN
445 select SYS_SUPPORTS_NUMA
446 select SYS_SUPPORTS_SMP
448 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
449 workstations. To compile a Linux kernel that runs on these, say Y
453 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
454 depends on EXPERIMENTAL
460 select DEFAULT_SGI_PARTITION
461 select DMA_NONCOHERENT
462 select GENERIC_ISA_DMA_SUPPORT_BROKEN
468 select SGI_HAS_INDYDOG
474 select SYS_HAS_CPU_R10000
476 # Disable EARLY_PRINTK for now since it leads to overwritten prom
477 # memory during early boot on some machines.
479 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
480 # for a more details discussion
482 # select SYS_HAS_EARLY_PRINTK
483 select SYS_SUPPORTS_64BIT_KERNEL
484 select SYS_SUPPORTS_BIG_ENDIAN
486 This is the SGI Indigo2 with R10000 processor. To compile a Linux
487 kernel that runs on these, say Y here.
496 select DMA_NONCOHERENT
499 select R5000_CPU_SCACHE
500 select RM7000_CPU_SCACHE
501 select SYS_HAS_CPU_R5000
502 select SYS_HAS_CPU_R10000 if BROKEN
503 select SYS_HAS_CPU_RM7000
504 select SYS_HAS_CPU_NEVADA
505 select SYS_SUPPORTS_64BIT_KERNEL
506 select SYS_SUPPORTS_BIG_ENDIAN
508 If you want this kernel to run on SGI O2 workstation, say Y here.
511 bool "Sibyte BCM91120C-CRhine"
512 depends on EXPERIMENTAL
515 select SIBYTE_BCM1120
517 select SYS_HAS_CPU_SB1
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_LITTLE_ENDIAN
522 bool "Sibyte BCM91120x-Carmel"
523 depends on EXPERIMENTAL
526 select SIBYTE_BCM1120
528 select SYS_HAS_CPU_SB1
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_LITTLE_ENDIAN
533 bool "Sibyte BCM91125C-CRhone"
534 depends on EXPERIMENTAL
537 select SIBYTE_BCM1125
539 select SYS_HAS_CPU_SB1
540 select SYS_SUPPORTS_BIG_ENDIAN
541 select SYS_SUPPORTS_HIGHMEM
542 select SYS_SUPPORTS_LITTLE_ENDIAN
545 bool "Sibyte BCM91125E-Rhone"
546 depends on EXPERIMENTAL
549 select SIBYTE_BCM1125H
551 select SYS_HAS_CPU_SB1
552 select SYS_SUPPORTS_BIG_ENDIAN
553 select SYS_SUPPORTS_LITTLE_ENDIAN
556 bool "Sibyte BCM91250A-SWARM"
559 select HAVE_PATA_PLATFORM
560 select NR_CPUS_DEFAULT_2
563 select SYS_HAS_CPU_SB1
564 select SYS_SUPPORTS_BIG_ENDIAN
565 select SYS_SUPPORTS_HIGHMEM
566 select SYS_SUPPORTS_LITTLE_ENDIAN
567 select ZONE_DMA32 if 64BIT
569 config SIBYTE_LITTLESUR
570 bool "Sibyte BCM91250C2-LittleSur"
571 depends on EXPERIMENTAL
574 select HAVE_PATA_PLATFORM
575 select NR_CPUS_DEFAULT_2
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_HIGHMEM
581 select SYS_SUPPORTS_LITTLE_ENDIAN
583 config SIBYTE_SENTOSA
584 bool "Sibyte BCM91250E-Sentosa"
585 depends on EXPERIMENTAL
588 select NR_CPUS_DEFAULT_2
591 select SYS_HAS_CPU_SB1
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_LITTLE_ENDIAN
596 bool "Sibyte BCM91480B-BigSur"
599 select NR_CPUS_DEFAULT_4
600 select SIBYTE_BCM1x80
602 select SYS_HAS_CPU_SB1
603 select SYS_SUPPORTS_BIG_ENDIAN
604 select SYS_SUPPORTS_HIGHMEM
605 select SYS_SUPPORTS_LITTLE_ENDIAN
606 select ZONE_DMA32 if 64BIT
609 bool "SNI RM200/300/400"
610 select ARC if CPU_LITTLE_ENDIAN
611 select ARC32 if CPU_LITTLE_ENDIAN
612 select SNIPROM if CPU_BIG_ENDIAN
613 select ARCH_MAY_HAVE_PC_FDC
617 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
618 select DMA_NONCOHERENT
619 select GENERIC_ISA_DMA
626 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
627 select SYS_HAS_CPU_R4X00
628 select SYS_HAS_CPU_R5000
629 select SYS_HAS_CPU_R10000
630 select R5000_CPU_SCACHE
631 select SYS_HAS_EARLY_PRINTK
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_HIGHMEM
636 select SYS_SUPPORTS_LITTLE_ENDIAN
638 The SNI RM200/300/400 are MIPS-based machines manufactured by
639 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
640 Technology and now in turn merged with Fujitsu. Say Y here to
641 support this machine type.
644 bool "Toshiba TX39 series based machines"
647 bool "Toshiba TX49 series based machines"
649 config MIKROTIK_RB532
650 bool "Mikrotik RB532 boards"
653 select DMA_NONCOHERENT
656 select SYS_HAS_CPU_MIPS32_R1
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_LITTLE_ENDIAN
661 select ARCH_REQUIRE_GPIOLIB
663 Support the Mikrotik(tm) RouterBoard 532 series,
664 based on the IDT RC32434 SoC.
667 bool "Wind River PPMC board"
672 select DMA_NONCOHERENT
674 select PCI_GT64XXX_PCI0
676 select SYS_HAS_CPU_MIPS32_R1
677 select SYS_HAS_CPU_MIPS32_R2
678 select SYS_HAS_CPU_MIPS64_R1
679 select SYS_HAS_CPU_NEVADA
680 select SYS_HAS_CPU_RM7000
681 select SYS_SUPPORTS_32BIT_KERNEL
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_LITTLE_ENDIAN
686 This enables support for the Wind River MIPS32 4KC PPMC evaluation
687 board, which is based on GT64120 bridge chip.
689 config CAVIUM_OCTEON_SIMULATOR
690 bool "Cavium Networks Octeon Simulator"
692 select 64BIT_PHYS_ADDR
694 select SYS_SUPPORTS_64BIT_KERNEL
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select SYS_SUPPORTS_HIGHMEM
697 select SYS_SUPPORTS_HOTPLUG_CPU
698 select SYS_HAS_CPU_CAVIUM_OCTEON
700 The Octeon simulator is software performance model of the Cavium
701 Octeon Processor. It supports simulating Octeon processors on x86
704 config CAVIUM_OCTEON_REFERENCE_BOARD
705 bool "Cavium Networks Octeon reference board"
707 select 64BIT_PHYS_ADDR
709 select SYS_SUPPORTS_64BIT_KERNEL
710 select SYS_SUPPORTS_BIG_ENDIAN
711 select SYS_SUPPORTS_HIGHMEM
712 select SYS_SUPPORTS_HOTPLUG_CPU
713 select SYS_HAS_EARLY_PRINTK
714 select SYS_HAS_CPU_CAVIUM_OCTEON
717 select ARCH_SUPPORTS_MSI
719 select USB_ARCH_HAS_OHCI
720 select USB_ARCH_HAS_EHCI
722 This option supports all of the Octeon reference boards from Cavium
723 Networks. It builds a kernel that dynamically determines the Octeon
724 CPU type and supports all known board reference implementations.
725 Some of the supported boards are:
732 Say Y here for most Octeon reference boards.
736 source "arch/mips/alchemy/Kconfig"
737 source "arch/mips/ath79/Kconfig"
738 source "arch/mips/bcm63xx/Kconfig"
739 source "arch/mips/jazz/Kconfig"
740 source "arch/mips/jz4740/Kconfig"
741 source "arch/mips/lasat/Kconfig"
742 source "arch/mips/pmc-sierra/Kconfig"
743 source "arch/mips/powertv/Kconfig"
744 source "arch/mips/sgi-ip27/Kconfig"
745 source "arch/mips/sibyte/Kconfig"
746 source "arch/mips/txx9/Kconfig"
747 source "arch/mips/vr41xx/Kconfig"
748 source "arch/mips/cavium-octeon/Kconfig"
749 source "arch/mips/loongson/Kconfig"
753 config RWSEM_GENERIC_SPINLOCK
757 config RWSEM_XCHGADD_ALGORITHM
760 config ARCH_HAS_ILOG2_U32
764 config ARCH_HAS_ILOG2_U64
768 config ARCH_SUPPORTS_OPROFILE
770 default y if !MIPS_MT_SMTC
772 config GENERIC_FIND_NEXT_BIT
776 config GENERIC_HWEIGHT
780 config GENERIC_CALIBRATE_DELAY
784 config GENERIC_CLOCKEVENTS
788 config GENERIC_CMOS_UPDATE
792 config SCHED_OMIT_FRAME_POINTER
796 config GENERIC_HARDIRQS_NO__DO_IRQ
800 # Select some configuration options automatically based on user selections.
805 config ARCH_MAY_HAVE_PC_FDC
854 select ARCH_REQUIRE_GPIOLIB
863 config DMA_NONCOHERENT
865 select NEED_DMA_MAP_STATE
867 config NEED_DMA_MAP_STATE
870 config SYS_HAS_EARLY_PRINTK
874 bool "Support for hot-pluggable CPUs"
875 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
877 Say Y here to allow turning CPUs off and on. CPUs can be
878 controlled through /sys/devices/system/cpu.
879 (Note: power management support will enable this option
880 automatically on SMP systems. )
881 Say N if you want to disable CPU hotplug.
883 config SYS_SUPPORTS_HOTPLUG_CPU
898 config MIPS_DISABLE_OBSOLETE_IDE
910 config GENERIC_ISA_DMA
912 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
915 config GENERIC_ISA_DMA_SUPPORT_BROKEN
917 select GENERIC_ISA_DMA
926 # Endianess selection. Sufficiently obscure so many users don't know what to
927 # answer,so we try hard to limit the available choices. Also the use of a
928 # choice statement should be more obvious to the user.
931 prompt "Endianess selection"
933 Some MIPS machines can be configured for either little or big endian
934 byte order. These modes require different kernels and a different
935 Linux distribution. In general there is one preferred byteorder for a
936 particular system but some systems are just as commonly used in the
937 one or the other endianness.
939 config CPU_BIG_ENDIAN
941 depends on SYS_SUPPORTS_BIG_ENDIAN
943 config CPU_LITTLE_ENDIAN
945 depends on SYS_SUPPORTS_LITTLE_ENDIAN
953 config SYS_SUPPORTS_APM_EMULATION
956 config SYS_SUPPORTS_BIG_ENDIAN
959 config SYS_SUPPORTS_LITTLE_ENDIAN
962 config SYS_SUPPORTS_HUGETLBFS
964 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
991 config IRQ_CPU_OCTEON
994 config MIPS_BOARDS_GEN
997 config PCI_GT64XXX_PCI0
1000 config NO_EXCEPT_FILL
1005 select SERIAL_RM9000
1011 select DMA_NONCOHERENT
1013 select SWAP_IO_SPACE
1014 select SYS_HAS_CPU_R5500
1015 select SYS_SUPPORTS_32BIT_KERNEL
1016 select SYS_SUPPORTS_64BIT_KERNEL
1017 select SYS_SUPPORTS_BIG_ENDIAN
1024 select DMA_NONCOHERENT
1025 select SYS_HAS_CPU_MIPS32_R2
1026 select SYS_SUPPORTS_32BIT_KERNEL
1027 select SYS_SUPPORTS_LITTLE_ENDIAN
1028 select SYS_SUPPORTS_BIG_ENDIAN
1030 select CPU_MIPSR2_IRQ_VI
1042 select DMA_NONCOHERENT
1044 select SYS_HAS_CPU_MIPS32_R1
1045 select SYS_HAS_EARLY_PRINTK
1046 select SYS_SUPPORTS_32BIT_KERNEL
1049 config SWAP_IO_SPACE
1052 config SERIAL_RM9000
1055 config SGI_HAS_INDYDOG
1067 config SGI_HAS_ZILOG
1070 config SGI_HAS_I8042
1073 config DEFAULT_SGI_PARTITION
1085 config MIPS_L1_CACHE_SHIFT
1087 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1088 default "6" if MIPS_CPU_SCACHE
1089 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1092 config HAVE_STD_PC_SERIAL_PORT
1096 bool "ARC console support"
1097 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1101 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1106 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1115 menu "CPU selection"
1121 config CPU_LOONGSON2E
1123 depends on SYS_HAS_CPU_LOONGSON2E
1124 select CPU_LOONGSON2
1126 The Loongson 2E processor implements the MIPS III instruction set
1127 with many extensions.
1129 It has an internal FPGA northbridge, which is compatiable to
1132 config CPU_LOONGSON2F
1134 depends on SYS_HAS_CPU_LOONGSON2F
1135 select CPU_LOONGSON2
1137 select ARCH_REQUIRE_GPIOLIB
1139 The Loongson 2F processor implements the MIPS III instruction set
1140 with many extensions.
1142 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1143 have a similar programming interface with FPGA northbridge used in
1146 config CPU_MIPS32_R1
1147 bool "MIPS32 Release 1"
1148 depends on SYS_HAS_CPU_MIPS32_R1
1149 select CPU_HAS_PREFETCH
1150 select CPU_SUPPORTS_32BIT_KERNEL
1151 select CPU_SUPPORTS_HIGHMEM
1153 Choose this option to build a kernel for release 1 or later of the
1154 MIPS32 architecture. Most modern embedded systems with a 32-bit
1155 MIPS processor are based on a MIPS32 processor. If you know the
1156 specific type of processor in your system, choose those that one
1157 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1158 Release 2 of the MIPS32 architecture is available since several
1159 years so chances are you even have a MIPS32 Release 2 processor
1160 in which case you should choose CPU_MIPS32_R2 instead for better
1163 config CPU_MIPS32_R2
1164 bool "MIPS32 Release 2"
1165 depends on SYS_HAS_CPU_MIPS32_R2
1166 select CPU_HAS_PREFETCH
1167 select CPU_SUPPORTS_32BIT_KERNEL
1168 select CPU_SUPPORTS_HIGHMEM
1170 Choose this option to build a kernel for release 2 or later of the
1171 MIPS32 architecture. Most modern embedded systems with a 32-bit
1172 MIPS processor are based on a MIPS32 processor. If you know the
1173 specific type of processor in your system, choose those that one
1174 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1176 config CPU_MIPS64_R1
1177 bool "MIPS64 Release 1"
1178 depends on SYS_HAS_CPU_MIPS64_R1
1179 select CPU_HAS_PREFETCH
1180 select CPU_SUPPORTS_32BIT_KERNEL
1181 select CPU_SUPPORTS_64BIT_KERNEL
1182 select CPU_SUPPORTS_HIGHMEM
1183 select CPU_SUPPORTS_HUGEPAGES
1185 Choose this option to build a kernel for release 1 or later of the
1186 MIPS64 architecture. Many modern embedded systems with a 64-bit
1187 MIPS processor are based on a MIPS64 processor. If you know the
1188 specific type of processor in your system, choose those that one
1189 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1190 Release 2 of the MIPS64 architecture is available since several
1191 years so chances are you even have a MIPS64 Release 2 processor
1192 in which case you should choose CPU_MIPS64_R2 instead for better
1195 config CPU_MIPS64_R2
1196 bool "MIPS64 Release 2"
1197 depends on SYS_HAS_CPU_MIPS64_R2
1198 select CPU_HAS_PREFETCH
1199 select CPU_SUPPORTS_32BIT_KERNEL
1200 select CPU_SUPPORTS_64BIT_KERNEL
1201 select CPU_SUPPORTS_HIGHMEM
1202 select CPU_SUPPORTS_HUGEPAGES
1204 Choose this option to build a kernel for release 2 or later of the
1205 MIPS64 architecture. Many modern embedded systems with a 64-bit
1206 MIPS processor are based on a MIPS64 processor. If you know the
1207 specific type of processor in your system, choose those that one
1208 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1212 depends on SYS_HAS_CPU_R3000
1214 select CPU_SUPPORTS_32BIT_KERNEL
1215 select CPU_SUPPORTS_HIGHMEM
1217 Please make sure to pick the right CPU type. Linux/MIPS is not
1218 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1219 *not* work on R4000 machines and vice versa. However, since most
1220 of the supported machines have an R4000 (or similar) CPU, R4x00
1221 might be a safe bet. If the resulting kernel does not work,
1222 try to recompile with R3000.
1226 depends on SYS_HAS_CPU_TX39XX
1227 select CPU_SUPPORTS_32BIT_KERNEL
1231 depends on SYS_HAS_CPU_VR41XX
1232 select CPU_SUPPORTS_32BIT_KERNEL
1233 select CPU_SUPPORTS_64BIT_KERNEL
1235 The options selects support for the NEC VR4100 series of processors.
1236 Only choose this option if you have one of these processors as a
1237 kernel built with this option will not run on any other type of
1238 processor or vice versa.
1242 depends on SYS_HAS_CPU_R4300
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_64BIT_KERNEL
1246 MIPS Technologies R4300-series processors.
1250 depends on SYS_HAS_CPU_R4X00
1251 select CPU_SUPPORTS_32BIT_KERNEL
1252 select CPU_SUPPORTS_64BIT_KERNEL
1254 MIPS Technologies R4000-series processors other than 4300, including
1255 the R4000, R4400, R4600, and 4700.
1259 depends on SYS_HAS_CPU_TX49XX
1260 select CPU_HAS_PREFETCH
1261 select CPU_SUPPORTS_32BIT_KERNEL
1262 select CPU_SUPPORTS_64BIT_KERNEL
1266 depends on SYS_HAS_CPU_R5000
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1270 MIPS Technologies R5000-series processors other than the Nevada.
1274 depends on SYS_HAS_CPU_R5432
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1280 depends on SYS_HAS_CPU_R5500
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_64BIT_KERNEL
1283 select CPU_SUPPORTS_HUGEPAGES
1285 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1290 depends on EXPERIMENTAL
1291 depends on SYS_HAS_CPU_R6000
1292 select CPU_SUPPORTS_32BIT_KERNEL
1294 MIPS Technologies R6000 and R6000A series processors. Note these
1295 processors are extremely rare and the support for them is incomplete.
1299 depends on SYS_HAS_CPU_NEVADA
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1303 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1307 depends on EXPERIMENTAL
1308 depends on SYS_HAS_CPU_R8000
1309 select CPU_HAS_PREFETCH
1310 select CPU_SUPPORTS_64BIT_KERNEL
1312 MIPS Technologies R8000 processors. Note these processors are
1313 uncommon and the support for them is incomplete.
1317 depends on SYS_HAS_CPU_R10000
1318 select CPU_HAS_PREFETCH
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1321 select CPU_SUPPORTS_HIGHMEM
1323 MIPS Technologies R10000-series processors.
1327 depends on SYS_HAS_CPU_RM7000
1328 select CPU_HAS_PREFETCH
1329 select CPU_SUPPORTS_32BIT_KERNEL
1330 select CPU_SUPPORTS_64BIT_KERNEL
1331 select CPU_SUPPORTS_HIGHMEM
1335 depends on SYS_HAS_CPU_RM9000
1336 select CPU_HAS_PREFETCH
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HIGHMEM
1340 select WEAK_ORDERING
1344 depends on SYS_HAS_CPU_SB1
1345 select CPU_SUPPORTS_32BIT_KERNEL
1346 select CPU_SUPPORTS_64BIT_KERNEL
1347 select CPU_SUPPORTS_HIGHMEM
1348 select WEAK_ORDERING
1350 config CPU_CAVIUM_OCTEON
1351 bool "Cavium Octeon processor"
1352 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1354 select IRQ_CPU_OCTEON
1355 select CPU_HAS_PREFETCH
1356 select CPU_SUPPORTS_64BIT_KERNEL
1357 select SYS_SUPPORTS_SMP
1358 select NR_CPUS_DEFAULT_16
1359 select WEAK_ORDERING
1360 select CPU_SUPPORTS_HIGHMEM
1361 select CPU_SUPPORTS_HUGEPAGES
1363 The Cavium Octeon processor is a highly integrated chip containing
1364 many ethernet hardware widgets for networking tasks. The processor
1365 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1366 Full details can be found at http://www.caviumnetworks.com.
1368 config CPU_BMIPS3300
1370 depends on SYS_HAS_CPU_BMIPS3300
1371 select DMA_NONCOHERENT
1373 select SWAP_IO_SPACE
1374 select SYS_SUPPORTS_32BIT_KERNEL
1375 select WEAK_ORDERING
1377 Broadcom BMIPS3300 processors.
1379 config CPU_BMIPS4350
1381 depends on SYS_HAS_CPU_BMIPS4350
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select DMA_NONCOHERENT
1385 select SWAP_IO_SPACE
1386 select SYS_SUPPORTS_SMP
1387 select SYS_SUPPORTS_HOTPLUG_CPU
1388 select WEAK_ORDERING
1390 Broadcom BMIPS4350 ("VIPER") processors.
1392 config CPU_BMIPS4380
1394 depends on SYS_HAS_CPU_BMIPS4380
1395 select CPU_SUPPORTS_32BIT_KERNEL
1396 select DMA_NONCOHERENT
1398 select SWAP_IO_SPACE
1399 select SYS_SUPPORTS_SMP
1400 select SYS_SUPPORTS_HOTPLUG_CPU
1401 select WEAK_ORDERING
1403 Broadcom BMIPS4380 processors.
1405 config CPU_BMIPS5000
1407 depends on SYS_HAS_CPU_BMIPS5000
1408 select CPU_SUPPORTS_32BIT_KERNEL
1409 select CPU_SUPPORTS_HIGHMEM
1410 select DMA_NONCOHERENT
1412 select SWAP_IO_SPACE
1413 select SYS_SUPPORTS_SMP
1414 select SYS_SUPPORTS_HOTPLUG_CPU
1415 select WEAK_ORDERING
1417 Broadcom BMIPS5000 processors.
1422 config CPU_NOP_WORKAROUNDS
1425 config CPU_JUMP_WORKAROUNDS
1428 config CPU_LOONGSON2F_WORKAROUNDS
1429 bool "Loongson 2F Workarounds"
1431 select CPU_NOP_WORKAROUNDS
1432 select CPU_JUMP_WORKAROUNDS
1434 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1435 require workarounds. Without workarounds the system may hang
1436 unexpectedly. For more information please refer to the gas
1437 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1439 Loongson 2F03 and later have fixed these issues and no workarounds
1440 are needed. The workarounds have no significant side effect on them
1441 but may decrease the performance of the system so this option should
1442 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1445 If unsure, please say Y.
1446 endif # CPU_LOONGSON2F
1448 config SYS_SUPPORTS_ZBOOT
1450 select HAVE_KERNEL_GZIP
1451 select HAVE_KERNEL_BZIP2
1452 select HAVE_KERNEL_LZMA
1453 select HAVE_KERNEL_LZO
1455 config SYS_SUPPORTS_ZBOOT_UART16550
1457 select SYS_SUPPORTS_ZBOOT
1459 config CPU_LOONGSON2
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_64BIT_KERNEL
1463 select CPU_SUPPORTS_HIGHMEM
1465 config SYS_HAS_CPU_LOONGSON2E
1468 config SYS_HAS_CPU_LOONGSON2F
1470 select CPU_SUPPORTS_CPUFREQ
1471 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1472 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1474 config SYS_HAS_CPU_MIPS32_R1
1477 config SYS_HAS_CPU_MIPS32_R2
1480 config SYS_HAS_CPU_MIPS64_R1
1483 config SYS_HAS_CPU_MIPS64_R2
1486 config SYS_HAS_CPU_R3000
1489 config SYS_HAS_CPU_TX39XX
1492 config SYS_HAS_CPU_VR41XX
1495 config SYS_HAS_CPU_R4300
1498 config SYS_HAS_CPU_R4X00
1501 config SYS_HAS_CPU_TX49XX
1504 config SYS_HAS_CPU_R5000
1507 config SYS_HAS_CPU_R5432
1510 config SYS_HAS_CPU_R5500
1513 config SYS_HAS_CPU_R6000
1516 config SYS_HAS_CPU_NEVADA
1519 config SYS_HAS_CPU_R8000
1522 config SYS_HAS_CPU_R10000
1525 config SYS_HAS_CPU_RM7000
1528 config SYS_HAS_CPU_RM9000
1531 config SYS_HAS_CPU_SB1
1534 config SYS_HAS_CPU_CAVIUM_OCTEON
1537 config SYS_HAS_CPU_BMIPS3300
1540 config SYS_HAS_CPU_BMIPS4350
1543 config SYS_HAS_CPU_BMIPS4380
1546 config SYS_HAS_CPU_BMIPS5000
1550 # CPU may reorder R->R, R->W, W->R, W->W
1551 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1553 config WEAK_ORDERING
1557 # CPU may reorder reads and writes beyond LL/SC
1558 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1560 config WEAK_REORDERING_BEYOND_LLSC
1565 # These two indicate any level of the MIPS32 and MIPS64 architecture
1569 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1573 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1576 # These two indicate the revision of the architecture, either Release 1 or Release 2
1580 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1584 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1586 config SYS_SUPPORTS_32BIT_KERNEL
1588 config SYS_SUPPORTS_64BIT_KERNEL
1590 config CPU_SUPPORTS_32BIT_KERNEL
1592 config CPU_SUPPORTS_64BIT_KERNEL
1594 config CPU_SUPPORTS_CPUFREQ
1596 config CPU_SUPPORTS_ADDRWINCFG
1598 config CPU_SUPPORTS_HUGEPAGES
1600 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1602 config MIPS_PGD_C0_CONTEXT
1604 default y if 64BIT && CPU_MIPSR2
1607 # Set to y for ptrace access to watch registers.
1609 config HARDWARE_WATCHPOINTS
1611 default y if CPU_MIPSR1 || CPU_MIPSR2
1617 prompt "Kernel code model"
1619 You should only select this option if you have a workload that
1620 actually benefits from 64-bit processing or if your machine has
1621 large memory. You will only be presented a single option in this
1622 menu if your system does not support both 32-bit and 64-bit kernels.
1625 bool "32-bit kernel"
1626 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1629 Select this option if you want to build a 32-bit kernel.
1631 bool "64-bit kernel"
1632 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1633 select HAVE_SYSCALL_WRAPPERS
1635 Select this option if you want to build a 64-bit kernel.
1640 prompt "Kernel page size"
1641 default PAGE_SIZE_4KB
1643 config PAGE_SIZE_4KB
1645 depends on !CPU_LOONGSON2
1647 This option select the standard 4kB Linux page size. On some
1648 R3000-family processors this is the only available page size. Using
1649 4kB page size will minimize memory consumption and is therefore
1650 recommended for low memory systems.
1652 config PAGE_SIZE_8KB
1654 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1656 Using 8kB page size will result in higher performance kernel at
1657 the price of higher memory consumption. This option is available
1658 only on R8000 and cnMIPS processors. Note that you will need a
1659 suitable Linux distribution to support this.
1661 config PAGE_SIZE_16KB
1663 depends on !CPU_R3000 && !CPU_TX39XX
1665 Using 16kB page size will result in higher performance kernel at
1666 the price of higher memory consumption. This option is available on
1667 all non-R3000 family processors. Note that you will need a suitable
1668 Linux distribution to support this.
1670 config PAGE_SIZE_32KB
1672 depends on CPU_CAVIUM_OCTEON
1674 Using 32kB page size will result in higher performance kernel at
1675 the price of higher memory consumption. This option is available
1676 only on cnMIPS cores. Note that you will need a suitable Linux
1677 distribution to support this.
1679 config PAGE_SIZE_64KB
1681 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1683 Using 64kB page size will result in higher performance kernel at
1684 the price of higher memory consumption. This option is available on
1685 all non-R3000 family processor. Not that at the time of this
1686 writing this option is still high experimental.
1690 config FORCE_MAX_ZONEORDER
1691 int "Maximum zone order"
1692 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1693 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1694 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1695 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1699 The kernel memory allocator divides physically contiguous memory
1700 blocks into "zones", where each zone is a power of two number of
1701 pages. This option selects the largest power of two that the kernel
1702 keeps in the memory allocator. If you need to allocate very large
1703 blocks of physically contiguous memory, then you may need to
1704 increase this value.
1706 This config option is actually maximum order plus one. For example,
1707 a value of 11 means that the largest free memory block is 2^10 pages.
1709 The page size is not necessarily 4KB. Keep this in mind
1710 when choosing a value for this option.
1715 config IP22_CPU_SCACHE
1720 # Support for a MIPS32 / MIPS64 style S-caches
1722 config MIPS_CPU_SCACHE
1726 config R5000_CPU_SCACHE
1730 config RM7000_CPU_SCACHE
1734 config SIBYTE_DMA_PAGEOPS
1735 bool "Use DMA to clear/copy pages"
1738 Instead of using the CPU to zero and copy pages, use a Data Mover
1739 channel. These DMA channels are otherwise unused by the standard
1740 SiByte Linux port. Seems to give a small performance benefit.
1742 config CPU_HAS_PREFETCH
1746 prompt "MIPS MT options"
1748 config MIPS_MT_DISABLED
1749 bool "Disable multithreading support."
1751 Use this option if your workload can't take advantage of
1752 MIPS hardware multithreading support. On systems that don't have
1753 the option of an MT-enabled processor this option will be the only
1754 option in this menu.
1757 bool "Use 1 TC on each available VPE for SMP"
1758 depends on SYS_SUPPORTS_MULTITHREADING
1759 select CPU_MIPSR2_IRQ_VI
1760 select CPU_MIPSR2_IRQ_EI
1762 select NR_CPUS_DEFAULT_2
1764 select SYS_SUPPORTS_SCHED_SMT if SMP
1765 select SYS_SUPPORTS_SMP
1768 This is a kernel model which is known a VSMP but lately has been
1769 marketesed into SMVP.
1770 Virtual SMP uses the processor's VPEs to implement virtual
1771 processors. In currently available configuration of the 34K processor
1772 this allows for a dual processor. Both processors will share the same
1773 primary caches; each will obtain the half of the TLB for it's own
1774 exclusive use. For a layman this model can be described as similar to
1775 what Intel calls Hyperthreading.
1777 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1780 bool "SMTC: Use all TCs on all VPEs for SMP"
1781 depends on CPU_MIPS32_R2
1782 #depends on CPU_MIPS64_R2 # once there is hardware ...
1783 depends on SYS_SUPPORTS_MULTITHREADING
1784 select CPU_MIPSR2_IRQ_VI
1785 select CPU_MIPSR2_IRQ_EI
1787 select NR_CPUS_DEFAULT_8
1789 select SYS_SUPPORTS_SMP
1792 This is a kernel model which is known a SMTC or lately has been
1793 marketesed into SMVP.
1794 is presenting the available TC's of the core as processors to Linux.
1795 On currently available 34K processors this means a Linux system will
1796 see up to 5 processors. The implementation of the SMTC kernel differs
1797 significantly from VSMP and cannot efficiently coexist in the same
1798 kernel binary so the choice between VSMP and SMTC is a compile time
1801 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1809 bool "SMT (multithreading) scheduler support"
1810 depends on SYS_SUPPORTS_SCHED_SMT
1813 SMT scheduler support improves the CPU scheduler's decision making
1814 when dealing with MIPS MT enabled cores at a cost of slightly
1815 increased overhead in some places. If unsure say N here.
1817 config SYS_SUPPORTS_SCHED_SMT
1821 config SYS_SUPPORTS_MULTITHREADING
1824 config MIPS_MT_FPAFF
1825 bool "Dynamic FPU affinity for FP-intensive threads"
1827 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1829 config MIPS_VPE_LOADER
1830 bool "VPE loader support."
1831 depends on SYS_SUPPORTS_MULTITHREADING
1832 select CPU_MIPSR2_IRQ_VI
1833 select CPU_MIPSR2_IRQ_EI
1836 Includes a loader for loading an elf relocatable object
1837 onto another VPE and running it.
1839 config MIPS_MT_SMTC_IM_BACKSTOP
1840 bool "Use per-TC register bits as backstop for inhibited IM bits"
1841 depends on MIPS_MT_SMTC
1844 To support multiple TC microthreads acting as "CPUs" within
1845 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1846 during interrupt handling. To support legacy drivers and interrupt
1847 controller management code, SMTC has a "backstop" to track and
1848 if necessary restore the interrupt mask. This has some performance
1849 impact on interrupt service overhead.
1851 config MIPS_MT_SMTC_IRQAFF
1852 bool "Support IRQ affinity API"
1853 depends on MIPS_MT_SMTC
1856 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1857 for SMTC Linux kernel. Requires platform support, of which
1858 an example can be found in the MIPS kernel i8259 and Malta
1859 platform code. Adds some overhead to interrupt dispatch, and
1860 should be used only if you know what you are doing.
1862 config MIPS_VPE_LOADER_TOM
1863 bool "Load VPE program into memory hidden from linux"
1864 depends on MIPS_VPE_LOADER
1867 The loader can use memory that is present but has been hidden from
1868 Linux using the kernel command line option "mem=xxMB". It's up to
1869 you to ensure the amount you put in the option and the space your
1870 program requires is less or equal to the amount physically present.
1872 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1873 config MIPS_VPE_APSP_API
1874 bool "Enable support for AP/SP API (RTLX)"
1875 depends on MIPS_VPE_LOADER
1878 config MIPS_APSP_KSPD
1880 depends on MIPS_VPE_APSP_API
1883 KSPD is a kernel daemon that accepts syscall requests from the SP
1884 side, actions them and returns the results. It also handles the
1885 "exit" syscall notifying other kernel modules the SP program is
1886 exiting. You probably want to say yes here.
1889 bool "MIPS CMP framework support"
1890 depends on SYS_SUPPORTS_MIPS_CMP
1892 select SYS_SUPPORTS_SMP
1893 select SYS_SUPPORTS_SCHED_SMT if SMP
1894 select WEAK_ORDERING
1897 This is a placeholder option for the GCMP work. It will need to
1898 be handled differently...
1900 config SB1_PASS_1_WORKAROUNDS
1902 depends on CPU_SB1_PASS_1
1905 config SB1_PASS_2_WORKAROUNDS
1907 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1910 config SB1_PASS_2_1_WORKAROUNDS
1912 depends on CPU_SB1 && CPU_SB1_PASS_2
1915 config 64BIT_PHYS_ADDR
1918 config ARCH_PHYS_ADDR_T_64BIT
1919 def_bool 64BIT_PHYS_ADDR
1921 config CPU_HAS_SMARTMIPS
1922 depends on SYS_SUPPORTS_SMARTMIPS
1923 bool "Support for the SmartMIPS ASE"
1925 SmartMIPS is a extension of the MIPS32 architecture aimed at
1926 increased security at both hardware and software level for
1927 smartcards. Enabling this option will allow proper use of the
1928 SmartMIPS instructions by Linux applications. However a kernel with
1929 this option will not work on a MIPS core without SmartMIPS core. If
1930 you don't know you probably don't have SmartMIPS and should say N
1937 # Vectored interrupt mode is an R2 feature
1939 config CPU_MIPSR2_IRQ_VI
1943 # Extended interrupt mode is an R2 feature
1945 config CPU_MIPSR2_IRQ_EI
1950 depends on !CPU_R3000
1953 config GENERIC_CLOCKEVENTS_BROADCAST
1959 config CPU_DADDI_WORKAROUNDS
1962 config CPU_R4000_WORKAROUNDS
1964 select CPU_R4400_WORKAROUNDS
1966 config CPU_R4400_WORKAROUNDS
1970 # - Highmem only makes sense for the 32-bit kernel.
1971 # - The current highmem code will only work properly on physically indexed
1972 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1973 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1974 # moment we protect the user and offer the highmem option only on machines
1975 # where it's known to be safe. This will not offer highmem on a few systems
1976 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1977 # indexed CPUs but we're playing safe.
1978 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1979 # know they might have memory configurations that could make use of highmem
1983 bool "High Memory Support"
1984 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1986 config CPU_SUPPORTS_HIGHMEM
1989 config SYS_SUPPORTS_HIGHMEM
1992 config SYS_SUPPORTS_SMARTMIPS
1995 config ARCH_FLATMEM_ENABLE
1997 depends on !NUMA && !CPU_LOONGSON2
1999 config ARCH_DISCONTIGMEM_ENABLE
2001 default y if SGI_IP27
2003 Say Y to support efficient handling of discontiguous physical memory,
2004 for architectures which are either NUMA (Non-Uniform Memory Access)
2005 or have huge holes in the physical address space for other reasons.
2006 See <file:Documentation/vm/numa> for more.
2008 config ARCH_POPULATES_NODE_MAP
2011 config ARCH_SPARSEMEM_ENABLE
2013 select SPARSEMEM_STATIC
2017 depends on SYS_SUPPORTS_NUMA
2019 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2020 Access). This option improves performance on systems with more
2021 than two nodes; on two node systems it is generally better to
2022 leave it disabled; on single node systems disable this option
2025 config SYS_SUPPORTS_NUMA
2031 depends on NEED_MULTIPLE_NODES
2033 config HW_PERF_EVENTS
2034 bool "Enable hardware performance counter support for perf events"
2035 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2038 Enable hardware performance counter support for perf events. If
2039 disabled, perf events will use software events only.
2044 bool "Multi-Processing support"
2045 depends on SYS_SUPPORTS_SMP
2047 select USE_GENERIC_SMP_HELPERS
2049 This enables support for systems with more than one CPU. If you have
2050 a system with only one CPU, like most personal computers, say N. If
2051 you have a system with more than one CPU, say Y.
2053 If you say N here, the kernel will run on single and multiprocessor
2054 machines, but will use only one CPU of a multiprocessor machine. If
2055 you say Y here, the kernel will run on many, but not all,
2056 singleprocessor machines. On a singleprocessor machine, the kernel
2057 will run faster if you say N here.
2059 People using multiprocessor machines who say Y here should also say
2060 Y to "Enhanced Real Time Clock Support", below.
2062 See also the SMP-HOWTO available at
2063 <http://www.tldp.org/docs.html#howto>.
2065 If you don't know what to do here, say N.
2070 config SYS_SUPPORTS_MIPS_CMP
2073 config SYS_SUPPORTS_SMP
2076 config NR_CPUS_DEFAULT_1
2079 config NR_CPUS_DEFAULT_2
2082 config NR_CPUS_DEFAULT_4
2085 config NR_CPUS_DEFAULT_8
2088 config NR_CPUS_DEFAULT_16
2091 config NR_CPUS_DEFAULT_32
2094 config NR_CPUS_DEFAULT_64
2098 int "Maximum number of CPUs (2-64)"
2099 range 1 64 if NR_CPUS_DEFAULT_1
2101 default "1" if NR_CPUS_DEFAULT_1
2102 default "2" if NR_CPUS_DEFAULT_2
2103 default "4" if NR_CPUS_DEFAULT_4
2104 default "8" if NR_CPUS_DEFAULT_8
2105 default "16" if NR_CPUS_DEFAULT_16
2106 default "32" if NR_CPUS_DEFAULT_32
2107 default "64" if NR_CPUS_DEFAULT_64
2109 This allows you to specify the maximum number of CPUs which this
2110 kernel will support. The maximum supported value is 32 for 32-bit
2111 kernel and 64 for 64-bit kernels; the minimum value which makes
2112 sense is 1 for Qemu (useful only for kernel debugging purposes)
2113 and 2 for all others.
2115 This is purely to save memory - each supported CPU adds
2116 approximately eight kilobytes to the kernel image. For best
2117 performance should round up your number of processors to the next
2120 source "kernel/time/Kconfig"
2123 # Timer Interrupt Frequency Configuration
2127 prompt "Timer frequency"
2130 Allows the configuration of the timer frequency.
2133 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2136 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2139 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2142 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2145 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2148 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2151 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2155 config SYS_SUPPORTS_48HZ
2158 config SYS_SUPPORTS_100HZ
2161 config SYS_SUPPORTS_128HZ
2164 config SYS_SUPPORTS_250HZ
2167 config SYS_SUPPORTS_256HZ
2170 config SYS_SUPPORTS_1000HZ
2173 config SYS_SUPPORTS_1024HZ
2176 config SYS_SUPPORTS_ARBIT_HZ
2178 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2179 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2180 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2181 !SYS_SUPPORTS_1024HZ
2186 default 100 if HZ_100
2187 default 128 if HZ_128
2188 default 250 if HZ_250
2189 default 256 if HZ_256
2190 default 1000 if HZ_1000
2191 default 1024 if HZ_1024
2193 source "kernel/Kconfig.preempt"
2195 config MIPS_INSANE_LARGE
2196 bool "Support for large 64-bit configurations"
2197 depends on CPU_R10000 && 64BIT
2199 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2200 previous 64-bit processors which only supported 40 bit / 1TB. If you
2201 need processes of more than 1TB virtual address space, say Y here.
2202 This will result in additional memory usage, so it is not
2203 recommended for normal users.
2206 bool "Kexec system call (EXPERIMENTAL)"
2207 depends on EXPERIMENTAL
2209 kexec is a system call that implements the ability to shutdown your
2210 current kernel, and to start another kernel. It is like a reboot
2211 but it is independent of the system firmware. And like a reboot
2212 you can start any kernel with it, not just Linux.
2214 The name comes from the similarity to the exec system call.
2216 It is an ongoing process to be certain the hardware in a machine
2217 is properly shutdown, so do not be surprised if this code does not
2218 initially work for you. It may help to enable device hotplugging
2219 support. As of this writing the exact hardware interface is
2220 strongly in flux, so no good recommendation can be made.
2223 bool "Enable seccomp to safely compute untrusted bytecode"
2227 This kernel feature is useful for number crunching applications
2228 that may need to compute untrusted bytecode during their
2229 execution. By using pipes or other transports made available to
2230 the process as file descriptors supporting the read/write
2231 syscalls, it's possible to isolate those applications in
2232 their own address space using seccomp. Once seccomp is
2233 enabled via /proc/<pid>/seccomp, it cannot be disabled
2234 and the task is only allowed to execute a few safe syscalls
2235 defined by each seccomp mode.
2237 If unsure, say Y. Only embedded should say N here.
2240 bool "Flattened Device Tree support"
2242 select OF_EARLY_FLATTREE
2244 Include support for flattened device tree machine descriptions.
2248 config LOCKDEP_SUPPORT
2252 config STACKTRACE_SUPPORT
2256 source "init/Kconfig"
2258 source "kernel/Kconfig.freezer"
2260 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2268 bool "Support for PCI controller"
2269 depends on HW_HAS_PCI
2272 Find out whether you have a PCI motherboard. PCI is the name of a
2273 bus system, i.e. the way the CPU talks to the other stuff inside
2274 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2280 source "drivers/pci/Kconfig"
2283 # ISA support is now enabled via select. Too many systems still have the one
2284 # or other ISA chip on the board that users don't know about so don't expect
2285 # users to choose the right thing ...
2292 depends on HW_HAS_EISA
2294 select GENERIC_ISA_DMA
2296 The Extended Industry Standard Architecture (EISA) bus was
2297 developed as an open alternative to the IBM MicroChannel bus.
2299 The EISA bus provided some of the features of the IBM MicroChannel
2300 bus while maintaining backward compatibility with cards made for
2301 the older ISA bus. The EISA bus saw limited use between 1988 and
2302 1995 when it was made obsolete by the PCI bus.
2304 Say Y here if you are building a kernel for an EISA-based machine.
2308 source "drivers/eisa/Kconfig"
2311 bool "TURBOchannel support"
2312 depends on MACH_DECSTATION
2314 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2315 processors. TURBOchannel programming specifications are available
2317 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2319 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2320 Linux driver support status is documented at:
2321 <http://www.linux-mips.org/wiki/DECstation>
2324 # bool "Access.Bus support"
2333 select MIPS_EXTERNAL_TIMER
2338 source "drivers/pcmcia/Kconfig"
2340 source "drivers/pci/hotplug/Kconfig"
2344 menu "Executable file formats"
2346 source "fs/Kconfig.binfmt"
2351 config MIPS32_COMPAT
2352 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2355 Select this option if you want Linux/MIPS 32-bit binary
2356 compatibility. Since all software available for Linux/MIPS is
2357 currently 32-bit you should say Y here.
2361 depends on MIPS32_COMPAT
2364 config SYSVIPC_COMPAT
2366 depends on COMPAT && SYSVIPC
2370 bool "Kernel support for o32 binaries"
2371 depends on MIPS32_COMPAT
2373 Select this option if you want to run o32 binaries. These are pure
2374 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2375 existing binaries are in this format.
2380 bool "Kernel support for n32 binaries"
2381 depends on MIPS32_COMPAT
2383 Select this option if you want to run n32 binaries. These are
2384 64-bit binaries using 32-bit quantities for addressing and certain
2385 data that would normally be 64-bit. They are used in special
2392 default y if MIPS32_O32 || MIPS32_N32
2396 menu "Power management options"
2398 config ARCH_HIBERNATION_POSSIBLE
2400 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2402 config ARCH_SUSPEND_POSSIBLE
2404 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2406 source "kernel/power/Kconfig"
2410 source "arch/mips/kernel/cpufreq/Kconfig"
2412 source "net/Kconfig"
2414 source "drivers/Kconfig"
2418 source "arch/mips/Kconfig.debug"
2420 source "security/Kconfig"
2422 source "crypto/Kconfig"
2424 menuconfig VIRTUALIZATION
2425 bool "Virtualization"
2428 Say Y here to get to see options for using your Linux host to run other
2429 operating systems inside virtual machines (guests).
2430 This option alone does not add any kernel code.
2432 If you say N, all options in this submenu will be skipped and disabled.
2436 source drivers/virtio/Kconfig
2438 endif # VIRTUALIZATION
2440 source "lib/Kconfig"