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
797 # Select some configuration options automatically based on user selections.
802 config ARCH_MAY_HAVE_PC_FDC
851 select ARCH_REQUIRE_GPIOLIB
860 config DMA_NONCOHERENT
862 select NEED_DMA_MAP_STATE
864 config NEED_DMA_MAP_STATE
867 config SYS_HAS_EARLY_PRINTK
871 bool "Support for hot-pluggable CPUs"
872 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
874 Say Y here to allow turning CPUs off and on. CPUs can be
875 controlled through /sys/devices/system/cpu.
876 (Note: power management support will enable this option
877 automatically on SMP systems. )
878 Say N if you want to disable CPU hotplug.
880 config SYS_SUPPORTS_HOTPLUG_CPU
895 config MIPS_DISABLE_OBSOLETE_IDE
907 config GENERIC_ISA_DMA
909 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
912 config GENERIC_ISA_DMA_SUPPORT_BROKEN
914 select GENERIC_ISA_DMA
923 # Endianess selection. Sufficiently obscure so many users don't know what to
924 # answer,so we try hard to limit the available choices. Also the use of a
925 # choice statement should be more obvious to the user.
928 prompt "Endianess selection"
930 Some MIPS machines can be configured for either little or big endian
931 byte order. These modes require different kernels and a different
932 Linux distribution. In general there is one preferred byteorder for a
933 particular system but some systems are just as commonly used in the
934 one or the other endianness.
936 config CPU_BIG_ENDIAN
938 depends on SYS_SUPPORTS_BIG_ENDIAN
940 config CPU_LITTLE_ENDIAN
942 depends on SYS_SUPPORTS_LITTLE_ENDIAN
950 config SYS_SUPPORTS_APM_EMULATION
953 config SYS_SUPPORTS_BIG_ENDIAN
956 config SYS_SUPPORTS_LITTLE_ENDIAN
959 config SYS_SUPPORTS_HUGETLBFS
961 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
988 config IRQ_CPU_OCTEON
991 config MIPS_BOARDS_GEN
994 config PCI_GT64XXX_PCI0
997 config NO_EXCEPT_FILL
1002 select SERIAL_RM9000
1008 select DMA_NONCOHERENT
1010 select SWAP_IO_SPACE
1011 select SYS_HAS_CPU_R5500
1012 select SYS_SUPPORTS_32BIT_KERNEL
1013 select SYS_SUPPORTS_64BIT_KERNEL
1014 select SYS_SUPPORTS_BIG_ENDIAN
1021 select DMA_NONCOHERENT
1022 select SYS_HAS_CPU_MIPS32_R2
1023 select SYS_SUPPORTS_32BIT_KERNEL
1024 select SYS_SUPPORTS_LITTLE_ENDIAN
1025 select SYS_SUPPORTS_BIG_ENDIAN
1027 select CPU_MIPSR2_IRQ_VI
1039 select DMA_NONCOHERENT
1041 select SYS_HAS_CPU_MIPS32_R1
1042 select SYS_HAS_EARLY_PRINTK
1043 select SYS_SUPPORTS_32BIT_KERNEL
1046 config SWAP_IO_SPACE
1049 config SERIAL_RM9000
1052 config SGI_HAS_INDYDOG
1064 config SGI_HAS_ZILOG
1067 config SGI_HAS_I8042
1070 config DEFAULT_SGI_PARTITION
1082 config MIPS_L1_CACHE_SHIFT
1084 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1085 default "6" if MIPS_CPU_SCACHE
1086 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1089 config HAVE_STD_PC_SERIAL_PORT
1093 bool "ARC console support"
1094 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1098 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1103 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1112 menu "CPU selection"
1118 config CPU_LOONGSON2E
1120 depends on SYS_HAS_CPU_LOONGSON2E
1121 select CPU_LOONGSON2
1123 The Loongson 2E processor implements the MIPS III instruction set
1124 with many extensions.
1126 It has an internal FPGA northbridge, which is compatiable to
1129 config CPU_LOONGSON2F
1131 depends on SYS_HAS_CPU_LOONGSON2F
1132 select CPU_LOONGSON2
1134 select ARCH_REQUIRE_GPIOLIB
1136 The Loongson 2F processor implements the MIPS III instruction set
1137 with many extensions.
1139 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1140 have a similar programming interface with FPGA northbridge used in
1143 config CPU_MIPS32_R1
1144 bool "MIPS32 Release 1"
1145 depends on SYS_HAS_CPU_MIPS32_R1
1146 select CPU_HAS_PREFETCH
1147 select CPU_SUPPORTS_32BIT_KERNEL
1148 select CPU_SUPPORTS_HIGHMEM
1150 Choose this option to build a kernel for release 1 or later of the
1151 MIPS32 architecture. Most modern embedded systems with a 32-bit
1152 MIPS processor are based on a MIPS32 processor. If you know the
1153 specific type of processor in your system, choose those that one
1154 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1155 Release 2 of the MIPS32 architecture is available since several
1156 years so chances are you even have a MIPS32 Release 2 processor
1157 in which case you should choose CPU_MIPS32_R2 instead for better
1160 config CPU_MIPS32_R2
1161 bool "MIPS32 Release 2"
1162 depends on SYS_HAS_CPU_MIPS32_R2
1163 select CPU_HAS_PREFETCH
1164 select CPU_SUPPORTS_32BIT_KERNEL
1165 select CPU_SUPPORTS_HIGHMEM
1167 Choose this option to build a kernel for release 2 or later of the
1168 MIPS32 architecture. Most modern embedded systems with a 32-bit
1169 MIPS processor are based on a MIPS32 processor. If you know the
1170 specific type of processor in your system, choose those that one
1171 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1173 config CPU_MIPS64_R1
1174 bool "MIPS64 Release 1"
1175 depends on SYS_HAS_CPU_MIPS64_R1
1176 select CPU_HAS_PREFETCH
1177 select CPU_SUPPORTS_32BIT_KERNEL
1178 select CPU_SUPPORTS_64BIT_KERNEL
1179 select CPU_SUPPORTS_HIGHMEM
1180 select CPU_SUPPORTS_HUGEPAGES
1182 Choose this option to build a kernel for release 1 or later of the
1183 MIPS64 architecture. Many modern embedded systems with a 64-bit
1184 MIPS processor are based on a MIPS64 processor. If you know the
1185 specific type of processor in your system, choose those that one
1186 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1187 Release 2 of the MIPS64 architecture is available since several
1188 years so chances are you even have a MIPS64 Release 2 processor
1189 in which case you should choose CPU_MIPS64_R2 instead for better
1192 config CPU_MIPS64_R2
1193 bool "MIPS64 Release 2"
1194 depends on SYS_HAS_CPU_MIPS64_R2
1195 select CPU_HAS_PREFETCH
1196 select CPU_SUPPORTS_32BIT_KERNEL
1197 select CPU_SUPPORTS_64BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1199 select CPU_SUPPORTS_HUGEPAGES
1201 Choose this option to build a kernel for release 2 or later of the
1202 MIPS64 architecture. Many modern embedded systems with a 64-bit
1203 MIPS processor are based on a MIPS64 processor. If you know the
1204 specific type of processor in your system, choose those that one
1205 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1209 depends on SYS_HAS_CPU_R3000
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_HIGHMEM
1214 Please make sure to pick the right CPU type. Linux/MIPS is not
1215 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1216 *not* work on R4000 machines and vice versa. However, since most
1217 of the supported machines have an R4000 (or similar) CPU, R4x00
1218 might be a safe bet. If the resulting kernel does not work,
1219 try to recompile with R3000.
1223 depends on SYS_HAS_CPU_TX39XX
1224 select CPU_SUPPORTS_32BIT_KERNEL
1228 depends on SYS_HAS_CPU_VR41XX
1229 select CPU_SUPPORTS_32BIT_KERNEL
1230 select CPU_SUPPORTS_64BIT_KERNEL
1232 The options selects support for the NEC VR4100 series of processors.
1233 Only choose this option if you have one of these processors as a
1234 kernel built with this option will not run on any other type of
1235 processor or vice versa.
1239 depends on SYS_HAS_CPU_R4300
1240 select CPU_SUPPORTS_32BIT_KERNEL
1241 select CPU_SUPPORTS_64BIT_KERNEL
1243 MIPS Technologies R4300-series processors.
1247 depends on SYS_HAS_CPU_R4X00
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_64BIT_KERNEL
1251 MIPS Technologies R4000-series processors other than 4300, including
1252 the R4000, R4400, R4600, and 4700.
1256 depends on SYS_HAS_CPU_TX49XX
1257 select CPU_HAS_PREFETCH
1258 select CPU_SUPPORTS_32BIT_KERNEL
1259 select CPU_SUPPORTS_64BIT_KERNEL
1263 depends on SYS_HAS_CPU_R5000
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_64BIT_KERNEL
1267 MIPS Technologies R5000-series processors other than the Nevada.
1271 depends on SYS_HAS_CPU_R5432
1272 select CPU_SUPPORTS_32BIT_KERNEL
1273 select CPU_SUPPORTS_64BIT_KERNEL
1277 depends on SYS_HAS_CPU_R5500
1278 select CPU_SUPPORTS_32BIT_KERNEL
1279 select CPU_SUPPORTS_64BIT_KERNEL
1280 select CPU_SUPPORTS_HUGEPAGES
1282 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1287 depends on EXPERIMENTAL
1288 depends on SYS_HAS_CPU_R6000
1289 select CPU_SUPPORTS_32BIT_KERNEL
1291 MIPS Technologies R6000 and R6000A series processors. Note these
1292 processors are extremely rare and the support for them is incomplete.
1296 depends on SYS_HAS_CPU_NEVADA
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_64BIT_KERNEL
1300 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1304 depends on EXPERIMENTAL
1305 depends on SYS_HAS_CPU_R8000
1306 select CPU_HAS_PREFETCH
1307 select CPU_SUPPORTS_64BIT_KERNEL
1309 MIPS Technologies R8000 processors. Note these processors are
1310 uncommon and the support for them is incomplete.
1314 depends on SYS_HAS_CPU_R10000
1315 select CPU_HAS_PREFETCH
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1318 select CPU_SUPPORTS_HIGHMEM
1320 MIPS Technologies R10000-series processors.
1324 depends on SYS_HAS_CPU_RM7000
1325 select CPU_HAS_PREFETCH
1326 select CPU_SUPPORTS_32BIT_KERNEL
1327 select CPU_SUPPORTS_64BIT_KERNEL
1328 select CPU_SUPPORTS_HIGHMEM
1332 depends on SYS_HAS_CPU_RM9000
1333 select CPU_HAS_PREFETCH
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1336 select CPU_SUPPORTS_HIGHMEM
1337 select WEAK_ORDERING
1341 depends on SYS_HAS_CPU_SB1
1342 select CPU_SUPPORTS_32BIT_KERNEL
1343 select CPU_SUPPORTS_64BIT_KERNEL
1344 select CPU_SUPPORTS_HIGHMEM
1345 select WEAK_ORDERING
1347 config CPU_CAVIUM_OCTEON
1348 bool "Cavium Octeon processor"
1349 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1351 select IRQ_CPU_OCTEON
1352 select CPU_HAS_PREFETCH
1353 select CPU_SUPPORTS_64BIT_KERNEL
1354 select SYS_SUPPORTS_SMP
1355 select NR_CPUS_DEFAULT_16
1356 select WEAK_ORDERING
1357 select CPU_SUPPORTS_HIGHMEM
1358 select CPU_SUPPORTS_HUGEPAGES
1360 The Cavium Octeon processor is a highly integrated chip containing
1361 many ethernet hardware widgets for networking tasks. The processor
1362 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1363 Full details can be found at http://www.caviumnetworks.com.
1365 config CPU_BMIPS3300
1367 depends on SYS_HAS_CPU_BMIPS3300
1368 select DMA_NONCOHERENT
1370 select SWAP_IO_SPACE
1371 select SYS_SUPPORTS_32BIT_KERNEL
1372 select WEAK_ORDERING
1374 Broadcom BMIPS3300 processors.
1376 config CPU_BMIPS4350
1378 depends on SYS_HAS_CPU_BMIPS4350
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select DMA_NONCOHERENT
1382 select SWAP_IO_SPACE
1383 select SYS_SUPPORTS_SMP
1384 select SYS_SUPPORTS_HOTPLUG_CPU
1385 select WEAK_ORDERING
1387 Broadcom BMIPS4350 ("VIPER") processors.
1389 config CPU_BMIPS4380
1391 depends on SYS_HAS_CPU_BMIPS4380
1392 select CPU_SUPPORTS_32BIT_KERNEL
1393 select DMA_NONCOHERENT
1395 select SWAP_IO_SPACE
1396 select SYS_SUPPORTS_SMP
1397 select SYS_SUPPORTS_HOTPLUG_CPU
1398 select WEAK_ORDERING
1400 Broadcom BMIPS4380 processors.
1402 config CPU_BMIPS5000
1404 depends on SYS_HAS_CPU_BMIPS5000
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_HIGHMEM
1407 select DMA_NONCOHERENT
1409 select SWAP_IO_SPACE
1410 select SYS_SUPPORTS_SMP
1411 select SYS_SUPPORTS_HOTPLUG_CPU
1412 select WEAK_ORDERING
1414 Broadcom BMIPS5000 processors.
1419 config CPU_NOP_WORKAROUNDS
1422 config CPU_JUMP_WORKAROUNDS
1425 config CPU_LOONGSON2F_WORKAROUNDS
1426 bool "Loongson 2F Workarounds"
1428 select CPU_NOP_WORKAROUNDS
1429 select CPU_JUMP_WORKAROUNDS
1431 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1432 require workarounds. Without workarounds the system may hang
1433 unexpectedly. For more information please refer to the gas
1434 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1436 Loongson 2F03 and later have fixed these issues and no workarounds
1437 are needed. The workarounds have no significant side effect on them
1438 but may decrease the performance of the system so this option should
1439 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1442 If unsure, please say Y.
1443 endif # CPU_LOONGSON2F
1445 config SYS_SUPPORTS_ZBOOT
1447 select HAVE_KERNEL_GZIP
1448 select HAVE_KERNEL_BZIP2
1449 select HAVE_KERNEL_LZMA
1450 select HAVE_KERNEL_LZO
1452 config SYS_SUPPORTS_ZBOOT_UART16550
1454 select SYS_SUPPORTS_ZBOOT
1456 config CPU_LOONGSON2
1458 select CPU_SUPPORTS_32BIT_KERNEL
1459 select CPU_SUPPORTS_64BIT_KERNEL
1460 select CPU_SUPPORTS_HIGHMEM
1462 config SYS_HAS_CPU_LOONGSON2E
1465 config SYS_HAS_CPU_LOONGSON2F
1467 select CPU_SUPPORTS_CPUFREQ
1468 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1469 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1471 config SYS_HAS_CPU_MIPS32_R1
1474 config SYS_HAS_CPU_MIPS32_R2
1477 config SYS_HAS_CPU_MIPS64_R1
1480 config SYS_HAS_CPU_MIPS64_R2
1483 config SYS_HAS_CPU_R3000
1486 config SYS_HAS_CPU_TX39XX
1489 config SYS_HAS_CPU_VR41XX
1492 config SYS_HAS_CPU_R4300
1495 config SYS_HAS_CPU_R4X00
1498 config SYS_HAS_CPU_TX49XX
1501 config SYS_HAS_CPU_R5000
1504 config SYS_HAS_CPU_R5432
1507 config SYS_HAS_CPU_R5500
1510 config SYS_HAS_CPU_R6000
1513 config SYS_HAS_CPU_NEVADA
1516 config SYS_HAS_CPU_R8000
1519 config SYS_HAS_CPU_R10000
1522 config SYS_HAS_CPU_RM7000
1525 config SYS_HAS_CPU_RM9000
1528 config SYS_HAS_CPU_SB1
1531 config SYS_HAS_CPU_CAVIUM_OCTEON
1534 config SYS_HAS_CPU_BMIPS3300
1537 config SYS_HAS_CPU_BMIPS4350
1540 config SYS_HAS_CPU_BMIPS4380
1543 config SYS_HAS_CPU_BMIPS5000
1547 # CPU may reorder R->R, R->W, W->R, W->W
1548 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1550 config WEAK_ORDERING
1554 # CPU may reorder reads and writes beyond LL/SC
1555 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1557 config WEAK_REORDERING_BEYOND_LLSC
1562 # These two indicate any level of the MIPS32 and MIPS64 architecture
1566 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1570 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1573 # These two indicate the revision of the architecture, either Release 1 or Release 2
1577 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1581 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1583 config SYS_SUPPORTS_32BIT_KERNEL
1585 config SYS_SUPPORTS_64BIT_KERNEL
1587 config CPU_SUPPORTS_32BIT_KERNEL
1589 config CPU_SUPPORTS_64BIT_KERNEL
1591 config CPU_SUPPORTS_CPUFREQ
1593 config CPU_SUPPORTS_ADDRWINCFG
1595 config CPU_SUPPORTS_HUGEPAGES
1597 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1599 config MIPS_PGD_C0_CONTEXT
1601 default y if 64BIT && CPU_MIPSR2
1604 # Set to y for ptrace access to watch registers.
1606 config HARDWARE_WATCHPOINTS
1608 default y if CPU_MIPSR1 || CPU_MIPSR2
1614 prompt "Kernel code model"
1616 You should only select this option if you have a workload that
1617 actually benefits from 64-bit processing or if your machine has
1618 large memory. You will only be presented a single option in this
1619 menu if your system does not support both 32-bit and 64-bit kernels.
1622 bool "32-bit kernel"
1623 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1626 Select this option if you want to build a 32-bit kernel.
1628 bool "64-bit kernel"
1629 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1630 select HAVE_SYSCALL_WRAPPERS
1632 Select this option if you want to build a 64-bit kernel.
1637 prompt "Kernel page size"
1638 default PAGE_SIZE_4KB
1640 config PAGE_SIZE_4KB
1642 depends on !CPU_LOONGSON2
1644 This option select the standard 4kB Linux page size. On some
1645 R3000-family processors this is the only available page size. Using
1646 4kB page size will minimize memory consumption and is therefore
1647 recommended for low memory systems.
1649 config PAGE_SIZE_8KB
1651 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1653 Using 8kB page size will result in higher performance kernel at
1654 the price of higher memory consumption. This option is available
1655 only on R8000 and cnMIPS processors. Note that you will need a
1656 suitable Linux distribution to support this.
1658 config PAGE_SIZE_16KB
1660 depends on !CPU_R3000 && !CPU_TX39XX
1662 Using 16kB page size will result in higher performance kernel at
1663 the price of higher memory consumption. This option is available on
1664 all non-R3000 family processors. Note that you will need a suitable
1665 Linux distribution to support this.
1667 config PAGE_SIZE_32KB
1669 depends on CPU_CAVIUM_OCTEON
1671 Using 32kB page size will result in higher performance kernel at
1672 the price of higher memory consumption. This option is available
1673 only on cnMIPS cores. Note that you will need a suitable Linux
1674 distribution to support this.
1676 config PAGE_SIZE_64KB
1678 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1680 Using 64kB page size will result in higher performance kernel at
1681 the price of higher memory consumption. This option is available on
1682 all non-R3000 family processor. Not that at the time of this
1683 writing this option is still high experimental.
1687 config FORCE_MAX_ZONEORDER
1688 int "Maximum zone order"
1689 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1690 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1691 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1692 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1696 The kernel memory allocator divides physically contiguous memory
1697 blocks into "zones", where each zone is a power of two number of
1698 pages. This option selects the largest power of two that the kernel
1699 keeps in the memory allocator. If you need to allocate very large
1700 blocks of physically contiguous memory, then you may need to
1701 increase this value.
1703 This config option is actually maximum order plus one. For example,
1704 a value of 11 means that the largest free memory block is 2^10 pages.
1706 The page size is not necessarily 4KB. Keep this in mind
1707 when choosing a value for this option.
1712 config IP22_CPU_SCACHE
1717 # Support for a MIPS32 / MIPS64 style S-caches
1719 config MIPS_CPU_SCACHE
1723 config R5000_CPU_SCACHE
1727 config RM7000_CPU_SCACHE
1731 config SIBYTE_DMA_PAGEOPS
1732 bool "Use DMA to clear/copy pages"
1735 Instead of using the CPU to zero and copy pages, use a Data Mover
1736 channel. These DMA channels are otherwise unused by the standard
1737 SiByte Linux port. Seems to give a small performance benefit.
1739 config CPU_HAS_PREFETCH
1743 prompt "MIPS MT options"
1745 config MIPS_MT_DISABLED
1746 bool "Disable multithreading support."
1748 Use this option if your workload can't take advantage of
1749 MIPS hardware multithreading support. On systems that don't have
1750 the option of an MT-enabled processor this option will be the only
1751 option in this menu.
1754 bool "Use 1 TC on each available VPE for SMP"
1755 depends on SYS_SUPPORTS_MULTITHREADING
1756 select CPU_MIPSR2_IRQ_VI
1757 select CPU_MIPSR2_IRQ_EI
1759 select NR_CPUS_DEFAULT_2
1761 select SYS_SUPPORTS_SCHED_SMT if SMP
1762 select SYS_SUPPORTS_SMP
1765 This is a kernel model which is known a VSMP but lately has been
1766 marketesed into SMVP.
1767 Virtual SMP uses the processor's VPEs to implement virtual
1768 processors. In currently available configuration of the 34K processor
1769 this allows for a dual processor. Both processors will share the same
1770 primary caches; each will obtain the half of the TLB for it's own
1771 exclusive use. For a layman this model can be described as similar to
1772 what Intel calls Hyperthreading.
1774 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1777 bool "SMTC: Use all TCs on all VPEs for SMP"
1778 depends on CPU_MIPS32_R2
1779 #depends on CPU_MIPS64_R2 # once there is hardware ...
1780 depends on SYS_SUPPORTS_MULTITHREADING
1781 select CPU_MIPSR2_IRQ_VI
1782 select CPU_MIPSR2_IRQ_EI
1784 select NR_CPUS_DEFAULT_8
1786 select SYS_SUPPORTS_SMP
1789 This is a kernel model which is known a SMTC or lately has been
1790 marketesed into SMVP.
1791 is presenting the available TC's of the core as processors to Linux.
1792 On currently available 34K processors this means a Linux system will
1793 see up to 5 processors. The implementation of the SMTC kernel differs
1794 significantly from VSMP and cannot efficiently coexist in the same
1795 kernel binary so the choice between VSMP and SMTC is a compile time
1798 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1806 bool "SMT (multithreading) scheduler support"
1807 depends on SYS_SUPPORTS_SCHED_SMT
1810 SMT scheduler support improves the CPU scheduler's decision making
1811 when dealing with MIPS MT enabled cores at a cost of slightly
1812 increased overhead in some places. If unsure say N here.
1814 config SYS_SUPPORTS_SCHED_SMT
1818 config SYS_SUPPORTS_MULTITHREADING
1821 config MIPS_MT_FPAFF
1822 bool "Dynamic FPU affinity for FP-intensive threads"
1824 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1826 config MIPS_VPE_LOADER
1827 bool "VPE loader support."
1828 depends on SYS_SUPPORTS_MULTITHREADING
1829 select CPU_MIPSR2_IRQ_VI
1830 select CPU_MIPSR2_IRQ_EI
1833 Includes a loader for loading an elf relocatable object
1834 onto another VPE and running it.
1836 config MIPS_MT_SMTC_IM_BACKSTOP
1837 bool "Use per-TC register bits as backstop for inhibited IM bits"
1838 depends on MIPS_MT_SMTC
1841 To support multiple TC microthreads acting as "CPUs" within
1842 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1843 during interrupt handling. To support legacy drivers and interrupt
1844 controller management code, SMTC has a "backstop" to track and
1845 if necessary restore the interrupt mask. This has some performance
1846 impact on interrupt service overhead.
1848 config MIPS_MT_SMTC_IRQAFF
1849 bool "Support IRQ affinity API"
1850 depends on MIPS_MT_SMTC
1853 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1854 for SMTC Linux kernel. Requires platform support, of which
1855 an example can be found in the MIPS kernel i8259 and Malta
1856 platform code. Adds some overhead to interrupt dispatch, and
1857 should be used only if you know what you are doing.
1859 config MIPS_VPE_LOADER_TOM
1860 bool "Load VPE program into memory hidden from linux"
1861 depends on MIPS_VPE_LOADER
1864 The loader can use memory that is present but has been hidden from
1865 Linux using the kernel command line option "mem=xxMB". It's up to
1866 you to ensure the amount you put in the option and the space your
1867 program requires is less or equal to the amount physically present.
1869 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1870 config MIPS_VPE_APSP_API
1871 bool "Enable support for AP/SP API (RTLX)"
1872 depends on MIPS_VPE_LOADER
1875 config MIPS_APSP_KSPD
1877 depends on MIPS_VPE_APSP_API
1880 KSPD is a kernel daemon that accepts syscall requests from the SP
1881 side, actions them and returns the results. It also handles the
1882 "exit" syscall notifying other kernel modules the SP program is
1883 exiting. You probably want to say yes here.
1886 bool "MIPS CMP framework support"
1887 depends on SYS_SUPPORTS_MIPS_CMP
1889 select SYS_SUPPORTS_SMP
1890 select SYS_SUPPORTS_SCHED_SMT if SMP
1891 select WEAK_ORDERING
1894 This is a placeholder option for the GCMP work. It will need to
1895 be handled differently...
1897 config SB1_PASS_1_WORKAROUNDS
1899 depends on CPU_SB1_PASS_1
1902 config SB1_PASS_2_WORKAROUNDS
1904 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1907 config SB1_PASS_2_1_WORKAROUNDS
1909 depends on CPU_SB1 && CPU_SB1_PASS_2
1912 config 64BIT_PHYS_ADDR
1915 config ARCH_PHYS_ADDR_T_64BIT
1916 def_bool 64BIT_PHYS_ADDR
1918 config CPU_HAS_SMARTMIPS
1919 depends on SYS_SUPPORTS_SMARTMIPS
1920 bool "Support for the SmartMIPS ASE"
1922 SmartMIPS is a extension of the MIPS32 architecture aimed at
1923 increased security at both hardware and software level for
1924 smartcards. Enabling this option will allow proper use of the
1925 SmartMIPS instructions by Linux applications. However a kernel with
1926 this option will not work on a MIPS core without SmartMIPS core. If
1927 you don't know you probably don't have SmartMIPS and should say N
1934 # Vectored interrupt mode is an R2 feature
1936 config CPU_MIPSR2_IRQ_VI
1940 # Extended interrupt mode is an R2 feature
1942 config CPU_MIPSR2_IRQ_EI
1947 depends on !CPU_R3000
1950 config GENERIC_CLOCKEVENTS_BROADCAST
1956 config CPU_DADDI_WORKAROUNDS
1959 config CPU_R4000_WORKAROUNDS
1961 select CPU_R4400_WORKAROUNDS
1963 config CPU_R4400_WORKAROUNDS
1967 # - Highmem only makes sense for the 32-bit kernel.
1968 # - The current highmem code will only work properly on physically indexed
1969 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1970 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1971 # moment we protect the user and offer the highmem option only on machines
1972 # where it's known to be safe. This will not offer highmem on a few systems
1973 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1974 # indexed CPUs but we're playing safe.
1975 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1976 # know they might have memory configurations that could make use of highmem
1980 bool "High Memory Support"
1981 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1983 config CPU_SUPPORTS_HIGHMEM
1986 config SYS_SUPPORTS_HIGHMEM
1989 config SYS_SUPPORTS_SMARTMIPS
1992 config ARCH_FLATMEM_ENABLE
1994 depends on !NUMA && !CPU_LOONGSON2
1996 config ARCH_DISCONTIGMEM_ENABLE
1998 default y if SGI_IP27
2000 Say Y to support efficient handling of discontiguous physical memory,
2001 for architectures which are either NUMA (Non-Uniform Memory Access)
2002 or have huge holes in the physical address space for other reasons.
2003 See <file:Documentation/vm/numa> for more.
2005 config ARCH_POPULATES_NODE_MAP
2008 config ARCH_SPARSEMEM_ENABLE
2010 select SPARSEMEM_STATIC
2014 depends on SYS_SUPPORTS_NUMA
2016 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2017 Access). This option improves performance on systems with more
2018 than two nodes; on two node systems it is generally better to
2019 leave it disabled; on single node systems disable this option
2022 config SYS_SUPPORTS_NUMA
2028 depends on NEED_MULTIPLE_NODES
2030 config HW_PERF_EVENTS
2031 bool "Enable hardware performance counter support for perf events"
2032 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2035 Enable hardware performance counter support for perf events. If
2036 disabled, perf events will use software events only.
2041 bool "Multi-Processing support"
2042 depends on SYS_SUPPORTS_SMP
2044 select USE_GENERIC_SMP_HELPERS
2046 This enables support for systems with more than one CPU. If you have
2047 a system with only one CPU, like most personal computers, say N. If
2048 you have a system with more than one CPU, say Y.
2050 If you say N here, the kernel will run on single and multiprocessor
2051 machines, but will use only one CPU of a multiprocessor machine. If
2052 you say Y here, the kernel will run on many, but not all,
2053 singleprocessor machines. On a singleprocessor machine, the kernel
2054 will run faster if you say N here.
2056 People using multiprocessor machines who say Y here should also say
2057 Y to "Enhanced Real Time Clock Support", below.
2059 See also the SMP-HOWTO available at
2060 <http://www.tldp.org/docs.html#howto>.
2062 If you don't know what to do here, say N.
2067 config SYS_SUPPORTS_MIPS_CMP
2070 config SYS_SUPPORTS_SMP
2073 config NR_CPUS_DEFAULT_1
2076 config NR_CPUS_DEFAULT_2
2079 config NR_CPUS_DEFAULT_4
2082 config NR_CPUS_DEFAULT_8
2085 config NR_CPUS_DEFAULT_16
2088 config NR_CPUS_DEFAULT_32
2091 config NR_CPUS_DEFAULT_64
2095 int "Maximum number of CPUs (2-64)"
2096 range 1 64 if NR_CPUS_DEFAULT_1
2098 default "1" if NR_CPUS_DEFAULT_1
2099 default "2" if NR_CPUS_DEFAULT_2
2100 default "4" if NR_CPUS_DEFAULT_4
2101 default "8" if NR_CPUS_DEFAULT_8
2102 default "16" if NR_CPUS_DEFAULT_16
2103 default "32" if NR_CPUS_DEFAULT_32
2104 default "64" if NR_CPUS_DEFAULT_64
2106 This allows you to specify the maximum number of CPUs which this
2107 kernel will support. The maximum supported value is 32 for 32-bit
2108 kernel and 64 for 64-bit kernels; the minimum value which makes
2109 sense is 1 for Qemu (useful only for kernel debugging purposes)
2110 and 2 for all others.
2112 This is purely to save memory - each supported CPU adds
2113 approximately eight kilobytes to the kernel image. For best
2114 performance should round up your number of processors to the next
2117 source "kernel/time/Kconfig"
2120 # Timer Interrupt Frequency Configuration
2124 prompt "Timer frequency"
2127 Allows the configuration of the timer frequency.
2130 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2133 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2136 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2139 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2142 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2145 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2148 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2152 config SYS_SUPPORTS_48HZ
2155 config SYS_SUPPORTS_100HZ
2158 config SYS_SUPPORTS_128HZ
2161 config SYS_SUPPORTS_250HZ
2164 config SYS_SUPPORTS_256HZ
2167 config SYS_SUPPORTS_1000HZ
2170 config SYS_SUPPORTS_1024HZ
2173 config SYS_SUPPORTS_ARBIT_HZ
2175 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2176 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2177 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2178 !SYS_SUPPORTS_1024HZ
2183 default 100 if HZ_100
2184 default 128 if HZ_128
2185 default 250 if HZ_250
2186 default 256 if HZ_256
2187 default 1000 if HZ_1000
2188 default 1024 if HZ_1024
2190 source "kernel/Kconfig.preempt"
2192 config MIPS_INSANE_LARGE
2193 bool "Support for large 64-bit configurations"
2194 depends on CPU_R10000 && 64BIT
2196 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2197 previous 64-bit processors which only supported 40 bit / 1TB. If you
2198 need processes of more than 1TB virtual address space, say Y here.
2199 This will result in additional memory usage, so it is not
2200 recommended for normal users.
2203 bool "Kexec system call (EXPERIMENTAL)"
2204 depends on EXPERIMENTAL
2206 kexec is a system call that implements the ability to shutdown your
2207 current kernel, and to start another kernel. It is like a reboot
2208 but it is independent of the system firmware. And like a reboot
2209 you can start any kernel with it, not just Linux.
2211 The name comes from the similarity to the exec system call.
2213 It is an ongoing process to be certain the hardware in a machine
2214 is properly shutdown, so do not be surprised if this code does not
2215 initially work for you. It may help to enable device hotplugging
2216 support. As of this writing the exact hardware interface is
2217 strongly in flux, so no good recommendation can be made.
2220 bool "Enable seccomp to safely compute untrusted bytecode"
2224 This kernel feature is useful for number crunching applications
2225 that may need to compute untrusted bytecode during their
2226 execution. By using pipes or other transports made available to
2227 the process as file descriptors supporting the read/write
2228 syscalls, it's possible to isolate those applications in
2229 their own address space using seccomp. Once seccomp is
2230 enabled via /proc/<pid>/seccomp, it cannot be disabled
2231 and the task is only allowed to execute a few safe syscalls
2232 defined by each seccomp mode.
2234 If unsure, say Y. Only embedded should say N here.
2237 bool "Flattened Device Tree support"
2239 select OF_EARLY_FLATTREE
2241 Include support for flattened device tree machine descriptions.
2245 config LOCKDEP_SUPPORT
2249 config STACKTRACE_SUPPORT
2253 source "init/Kconfig"
2255 source "kernel/Kconfig.freezer"
2257 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2265 bool "Support for PCI controller"
2266 depends on HW_HAS_PCI
2269 Find out whether you have a PCI motherboard. PCI is the name of a
2270 bus system, i.e. the way the CPU talks to the other stuff inside
2271 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2277 source "drivers/pci/Kconfig"
2280 # ISA support is now enabled via select. Too many systems still have the one
2281 # or other ISA chip on the board that users don't know about so don't expect
2282 # users to choose the right thing ...
2289 depends on HW_HAS_EISA
2291 select GENERIC_ISA_DMA
2293 The Extended Industry Standard Architecture (EISA) bus was
2294 developed as an open alternative to the IBM MicroChannel bus.
2296 The EISA bus provided some of the features of the IBM MicroChannel
2297 bus while maintaining backward compatibility with cards made for
2298 the older ISA bus. The EISA bus saw limited use between 1988 and
2299 1995 when it was made obsolete by the PCI bus.
2301 Say Y here if you are building a kernel for an EISA-based machine.
2305 source "drivers/eisa/Kconfig"
2308 bool "TURBOchannel support"
2309 depends on MACH_DECSTATION
2311 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2312 processors. TURBOchannel programming specifications are available
2314 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2316 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2317 Linux driver support status is documented at:
2318 <http://www.linux-mips.org/wiki/DECstation>
2321 # bool "Access.Bus support"
2330 select MIPS_EXTERNAL_TIMER
2335 source "drivers/pcmcia/Kconfig"
2337 source "drivers/pci/hotplug/Kconfig"
2341 menu "Executable file formats"
2343 source "fs/Kconfig.binfmt"
2348 config MIPS32_COMPAT
2349 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2352 Select this option if you want Linux/MIPS 32-bit binary
2353 compatibility. Since all software available for Linux/MIPS is
2354 currently 32-bit you should say Y here.
2358 depends on MIPS32_COMPAT
2361 config SYSVIPC_COMPAT
2363 depends on COMPAT && SYSVIPC
2367 bool "Kernel support for o32 binaries"
2368 depends on MIPS32_COMPAT
2370 Select this option if you want to run o32 binaries. These are pure
2371 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2372 existing binaries are in this format.
2377 bool "Kernel support for n32 binaries"
2378 depends on MIPS32_COMPAT
2380 Select this option if you want to run n32 binaries. These are
2381 64-bit binaries using 32-bit quantities for addressing and certain
2382 data that would normally be 64-bit. They are used in special
2389 default y if MIPS32_O32 || MIPS32_N32
2393 menu "Power management options"
2395 config ARCH_HIBERNATION_POSSIBLE
2397 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2399 config ARCH_SUSPEND_POSSIBLE
2401 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2403 source "kernel/power/Kconfig"
2407 source "arch/mips/kernel/cpufreq/Kconfig"
2409 source "net/Kconfig"
2411 source "drivers/Kconfig"
2415 source "arch/mips/Kconfig.debug"
2417 source "security/Kconfig"
2419 source "crypto/Kconfig"
2421 menuconfig VIRTUALIZATION
2422 bool "Virtualization"
2425 Say Y here to get to see options for using your Linux host to run other
2426 operating systems inside virtual machines (guests).
2427 This option alone does not add any kernel code.
2429 If you say N, all options in this submenu will be skipped and disabled.
2433 source drivers/virtio/Kconfig
2435 endif # VIRTUALIZATION
2437 source "lib/Kconfig"