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_FUNCTION_GRAPH_TRACER
16 select HAVE_KRETPROBES
17 select RTC_LIB if !MACH_LOONGSON
18 select GENERIC_ATOMIC64 if !64BIT
20 select HAVE_DMA_API_DEBUG
22 menu "Machine selection"
32 bool "Alchemy processor based machines"
33 select 64BIT_PHYS_ADDR
37 select SYS_HAS_CPU_MIPS32_R1
38 select SYS_SUPPORTS_32BIT_KERNEL
39 select SYS_SUPPORTS_APM_EMULATION
41 select ARCH_WANT_OPTIONAL_GPIOLIB
42 select SYS_SUPPORTS_ZBOOT
45 bool "Texas Instruments AR7"
47 select DMA_NONCOHERENT
53 select SYS_HAS_CPU_MIPS32_R1
54 select SYS_HAS_EARLY_PRINTK
55 select SYS_SUPPORTS_32BIT_KERNEL
56 select SYS_SUPPORTS_LITTLE_ENDIAN
57 select SYS_SUPPORTS_ZBOOT_UART16550
58 select ARCH_REQUIRE_GPIOLIB
62 Support for the Texas Instruments AR7 System-on-a-Chip
63 family: TNETD7100, 7200 and 7300.
66 bool "Broadcom BCM47XX based boards"
69 select DMA_NONCOHERENT
72 select SYS_HAS_CPU_MIPS32_R1
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_LITTLE_ENDIAN
76 select SSB_DRIVER_MIPS
77 select SSB_DRIVER_EXTIF
79 select SSB_B43_PCI_BRIDGE if PCI
80 select SSB_PCICORE_HOSTMODE if PCI
82 select SYS_HAS_EARLY_PRINTK
85 Support for BCM47XX based boards
88 bool "Broadcom BCM63XX based boards"
91 select DMA_NONCOHERENT
93 select SYS_HAS_CPU_MIPS32_R1
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_BIG_ENDIAN
96 select SYS_HAS_EARLY_PRINTK
98 select ARCH_REQUIRE_GPIOLIB
100 Support for BCM63XX based boards
107 select DMA_NONCOHERENT
113 select PCI_GT64XXX_PCI0
115 select SYS_HAS_CPU_NEVADA
116 select SYS_HAS_EARLY_PRINTK
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_64BIT_KERNEL
119 select SYS_SUPPORTS_LITTLE_ENDIAN
121 config MACH_DECSTATION
128 select CPU_DADDI_WORKAROUNDS if 64BIT
129 select CPU_R4000_WORKAROUNDS if 64BIT
130 select CPU_R4400_WORKAROUNDS if 64BIT
131 select DMA_NONCOHERENT
134 select SYS_HAS_CPU_R3000
135 select SYS_HAS_CPU_R4X00
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
138 select SYS_SUPPORTS_LITTLE_ENDIAN
139 select SYS_SUPPORTS_128HZ
140 select SYS_SUPPORTS_256HZ
141 select SYS_SUPPORTS_1024HZ
143 This enables support for DEC's MIPS based workstations. For details
144 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
145 DECstation porting pages on <http://decstation.unix-ag.org/>.
147 If you have one of the following DECstation Models you definitely
148 want to choose R4xx0 for the CPU Type:
155 otherwise choose R3000.
158 bool "Jazz family of machines"
161 select ARCH_MAY_HAVE_PC_FDC
164 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
165 select GENERIC_ISA_DMA
170 select SYS_HAS_CPU_R4X00
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
173 select SYS_SUPPORTS_100HZ
175 This a family of machines based on the MIPS R4030 chipset which was
176 used by several vendors to build RISC/os and Windows NT workstations.
177 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
178 Olivetti M700-10 workstations.
181 bool "Ingenic JZ4740 based machines"
182 select SYS_HAS_CPU_MIPS32_R1
183 select SYS_SUPPORTS_32BIT_KERNEL
184 select SYS_SUPPORTS_LITTLE_ENDIAN
185 select DMA_NONCOHERENT
188 select ARCH_REQUIRE_GPIOLIB
189 select SYS_HAS_EARLY_PRINTK
193 bool "LASAT Networks platforms"
196 select DMA_NONCOHERENT
197 select SYS_HAS_EARLY_PRINTK
200 select PCI_GT64XXX_PCI0
202 select R5000_CPU_SCACHE
203 select SYS_HAS_CPU_R5000
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
206 select SYS_SUPPORTS_LITTLE_ENDIAN
209 bool "Loongson family of machines"
210 select SYS_SUPPORTS_ZBOOT
212 This enables the support of Loongson family of machines.
214 Loongson is a family of general-purpose MIPS-compatible CPUs.
215 developed at Institute of Computing Technology (ICT),
216 Chinese Academy of Sciences (CAS) in the People's Republic
217 of China. The chief architect is Professor Weiwu Hu.
220 bool "MIPS Malta board"
221 select ARCH_MAY_HAVE_PC_FDC
226 select DMA_NONCOHERENT
227 select GENERIC_ISA_DMA
233 select MIPS_BOARDS_GEN
235 select MIPS_CPU_SCACHE
236 select PCI_GT64XXX_PCI0
239 select SYS_HAS_CPU_MIPS32_R1
240 select SYS_HAS_CPU_MIPS32_R2
241 select SYS_HAS_CPU_MIPS64_R1
242 select SYS_HAS_CPU_NEVADA
243 select SYS_HAS_CPU_RM7000
244 select SYS_HAS_EARLY_PRINTK
245 select SYS_SUPPORTS_32BIT_KERNEL
246 select SYS_SUPPORTS_64BIT_KERNEL
247 select SYS_SUPPORTS_BIG_ENDIAN
248 select SYS_SUPPORTS_LITTLE_ENDIAN
249 select SYS_SUPPORTS_MIPS_CMP
250 select SYS_SUPPORTS_MULTITHREADING
251 select SYS_SUPPORTS_SMARTMIPS
252 select SYS_SUPPORTS_ZBOOT
254 This enables support for the MIPS Technologies Malta evaluation
258 bool 'MIPS simulator (MIPSsim)'
261 select DMA_NONCOHERENT
262 select SYS_HAS_EARLY_PRINTK
265 select SYS_HAS_CPU_MIPS32_R1
266 select SYS_HAS_CPU_MIPS32_R2
267 select SYS_HAS_EARLY_PRINTK
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_SUPPORTS_MULTITHREADING
271 select SYS_SUPPORTS_LITTLE_ENDIAN
273 This option enables support for MIPS Technologies MIPSsim software
277 bool "NEC EMMA2RH Mark-eins board"
281 This enables support for the NEC Electronics Mark-eins boards.
284 bool "NEC VR4100 series based machines"
287 select SYS_HAS_CPU_VR41XX
288 select ARCH_REQUIRE_GPIOLIB
291 bool "NXP STB220 board"
294 Support for NXP Semiconductors STB220 Development Board.
301 Support for NXP Semiconductors STB225 Development Board.
304 bool "NXP PNX8550 based JBS board"
306 select SYS_SUPPORTS_LITTLE_ENDIAN
308 config PNX8550_STB810
309 bool "NXP PNX8550 based STB810 board"
311 select SYS_SUPPORTS_LITTLE_ENDIAN
314 bool "PMC-Sierra MSP chipsets"
315 depends on EXPERIMENTAL
316 select DMA_NONCOHERENT
318 select NO_EXCEPT_FILL
320 select SYS_HAS_CPU_MIPS32_R1
321 select SYS_HAS_CPU_MIPS32_R2
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_BIG_ENDIAN
326 select SERIAL_8250_CONSOLE
328 This adds support for the PMC-Sierra family of Multi-Service
329 Processor System-On-A-Chips. These parts include a number
330 of integrated peripherals, interfaces and DSPs in addition to
331 a variety of MIPS cores.
334 bool "PMC-Sierra Yosemite eval board"
343 select SYS_HAS_CPU_RM9000
344 select SYS_HAS_EARLY_PRINTK
345 select SYS_SUPPORTS_32BIT_KERNEL
346 select SYS_SUPPORTS_64BIT_KERNEL
347 select SYS_SUPPORTS_BIG_ENDIAN
348 select SYS_SUPPORTS_HIGHMEM
349 select SYS_SUPPORTS_SMP
351 Yosemite is an evaluation board for the RM9000x2 processor
352 manufactured by PMC-Sierra.
358 select CPU_MIPSR2_IRQ_VI
359 select CPU_MIPSR2_IRQ_EI
361 select DMA_NONCOHERENT
363 select SYS_HAS_EARLY_PRINTK
364 select SYS_HAS_CPU_MIPS32_R2
365 select SYS_SUPPORTS_32BIT_KERNEL
366 select SYS_SUPPORTS_BIG_ENDIAN
367 select SYS_SUPPORTS_HIGHMEM
368 select USB_OHCI_LITTLE_ENDIAN
370 This enables support for the Cisco PowerTV Platform.
373 bool "SGI IP22 (Indy/Indigo2)"
379 select DEFAULT_SGI_PARTITION
380 select DMA_NONCOHERENT
384 select IP22_CPU_SCACHE
386 select GENERIC_ISA_DMA_SUPPORT_BROKEN
388 select SGI_HAS_INDYDOG
394 select SYS_HAS_CPU_R4X00
395 select SYS_HAS_CPU_R5000
397 # Disable EARLY_PRINTK for now since it leads to overwritten prom
398 # memory during early boot on some machines.
400 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
401 # for a more details discussion
403 # select SYS_HAS_EARLY_PRINTK
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_64BIT_KERNEL
406 select SYS_SUPPORTS_BIG_ENDIAN
408 This are the SGI Indy, Challenge S and Indigo2, as well as certain
409 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
410 that runs on these, say Y here.
413 bool "SGI IP27 (Origin200/2000)"
417 select DEFAULT_SGI_PARTITION
419 select SYS_HAS_EARLY_PRINTK
421 select NR_CPUS_DEFAULT_64
422 select SYS_HAS_CPU_R10000
423 select SYS_SUPPORTS_64BIT_KERNEL
424 select SYS_SUPPORTS_BIG_ENDIAN
425 select SYS_SUPPORTS_NUMA
426 select SYS_SUPPORTS_SMP
428 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
429 workstations. To compile a Linux kernel that runs on these, say Y
433 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
434 depends on EXPERIMENTAL
440 select DEFAULT_SGI_PARTITION
441 select DMA_NONCOHERENT
442 select GENERIC_ISA_DMA_SUPPORT_BROKEN
448 select SGI_HAS_INDYDOG
454 select SYS_HAS_CPU_R10000
456 # Disable EARLY_PRINTK for now since it leads to overwritten prom
457 # memory during early boot on some machines.
459 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
460 # for a more details discussion
462 # select SYS_HAS_EARLY_PRINTK
463 select SYS_SUPPORTS_64BIT_KERNEL
464 select SYS_SUPPORTS_BIG_ENDIAN
466 This is the SGI Indigo2 with R10000 processor. To compile a Linux
467 kernel that runs on these, say Y here.
476 select DMA_NONCOHERENT
479 select R5000_CPU_SCACHE
480 select RM7000_CPU_SCACHE
481 select SYS_HAS_CPU_R5000
482 select SYS_HAS_CPU_R10000 if BROKEN
483 select SYS_HAS_CPU_RM7000
484 select SYS_HAS_CPU_NEVADA
485 select SYS_SUPPORTS_64BIT_KERNEL
486 select SYS_SUPPORTS_BIG_ENDIAN
488 If you want this kernel to run on SGI O2 workstation, say Y here.
491 bool "Sibyte BCM91120C-CRhine"
492 depends on EXPERIMENTAL
495 select SIBYTE_BCM1120
497 select SYS_HAS_CPU_SB1
498 select SYS_SUPPORTS_BIG_ENDIAN
499 select SYS_SUPPORTS_LITTLE_ENDIAN
502 bool "Sibyte BCM91120x-Carmel"
503 depends on EXPERIMENTAL
506 select SIBYTE_BCM1120
508 select SYS_HAS_CPU_SB1
509 select SYS_SUPPORTS_BIG_ENDIAN
510 select SYS_SUPPORTS_LITTLE_ENDIAN
513 bool "Sibyte BCM91125C-CRhone"
514 depends on EXPERIMENTAL
517 select SIBYTE_BCM1125
519 select SYS_HAS_CPU_SB1
520 select SYS_SUPPORTS_BIG_ENDIAN
521 select SYS_SUPPORTS_HIGHMEM
522 select SYS_SUPPORTS_LITTLE_ENDIAN
525 bool "Sibyte BCM91125E-Rhone"
526 depends on EXPERIMENTAL
529 select SIBYTE_BCM1125H
531 select SYS_HAS_CPU_SB1
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_LITTLE_ENDIAN
536 bool "Sibyte BCM91250A-SWARM"
539 select HAVE_PATA_PLATFORM
540 select NR_CPUS_DEFAULT_2
543 select SYS_HAS_CPU_SB1
544 select SYS_SUPPORTS_BIG_ENDIAN
545 select SYS_SUPPORTS_HIGHMEM
546 select SYS_SUPPORTS_LITTLE_ENDIAN
547 select ZONE_DMA32 if 64BIT
549 config SIBYTE_LITTLESUR
550 bool "Sibyte BCM91250C2-LittleSur"
551 depends on EXPERIMENTAL
554 select HAVE_PATA_PLATFORM
555 select NR_CPUS_DEFAULT_2
558 select SYS_HAS_CPU_SB1
559 select SYS_SUPPORTS_BIG_ENDIAN
560 select SYS_SUPPORTS_HIGHMEM
561 select SYS_SUPPORTS_LITTLE_ENDIAN
563 config SIBYTE_SENTOSA
564 bool "Sibyte BCM91250E-Sentosa"
565 depends on EXPERIMENTAL
568 select NR_CPUS_DEFAULT_2
571 select SYS_HAS_CPU_SB1
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_LITTLE_ENDIAN
576 bool "Sibyte BCM91480B-BigSur"
579 select NR_CPUS_DEFAULT_4
580 select SIBYTE_BCM1x80
582 select SYS_HAS_CPU_SB1
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_HIGHMEM
585 select SYS_SUPPORTS_LITTLE_ENDIAN
586 select ZONE_DMA32 if 64BIT
589 bool "SNI RM200/300/400"
590 select ARC if CPU_LITTLE_ENDIAN
591 select ARC32 if CPU_LITTLE_ENDIAN
592 select SNIPROM if CPU_BIG_ENDIAN
593 select ARCH_MAY_HAVE_PC_FDC
597 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
598 select DMA_NONCOHERENT
599 select GENERIC_ISA_DMA
606 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
607 select SYS_HAS_CPU_R4X00
608 select SYS_HAS_CPU_R5000
609 select SYS_HAS_CPU_R10000
610 select R5000_CPU_SCACHE
611 select SYS_HAS_EARLY_PRINTK
612 select SYS_SUPPORTS_32BIT_KERNEL
613 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_HIGHMEM
616 select SYS_SUPPORTS_LITTLE_ENDIAN
618 The SNI RM200/300/400 are MIPS-based machines manufactured by
619 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
620 Technology and now in turn merged with Fujitsu. Say Y here to
621 support this machine type.
624 bool "Toshiba TX39 series based machines"
627 bool "Toshiba TX49 series based machines"
629 config MIKROTIK_RB532
630 bool "Mikrotik RB532 boards"
633 select DMA_NONCOHERENT
636 select SYS_HAS_CPU_MIPS32_R1
637 select SYS_SUPPORTS_32BIT_KERNEL
638 select SYS_SUPPORTS_LITTLE_ENDIAN
641 select ARCH_REQUIRE_GPIOLIB
643 Support the Mikrotik(tm) RouterBoard 532 series,
644 based on the IDT RC32434 SoC.
647 bool "Wind River PPMC board"
652 select DMA_NONCOHERENT
654 select PCI_GT64XXX_PCI0
656 select SYS_HAS_CPU_MIPS32_R1
657 select SYS_HAS_CPU_MIPS32_R2
658 select SYS_HAS_CPU_MIPS64_R1
659 select SYS_HAS_CPU_NEVADA
660 select SYS_HAS_CPU_RM7000
661 select SYS_SUPPORTS_32BIT_KERNEL
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select SYS_SUPPORTS_LITTLE_ENDIAN
666 This enables support for the Wind River MIPS32 4KC PPMC evaluation
667 board, which is based on GT64120 bridge chip.
669 config CAVIUM_OCTEON_SIMULATOR
670 bool "Cavium Networks Octeon Simulator"
672 select 64BIT_PHYS_ADDR
674 select SYS_SUPPORTS_64BIT_KERNEL
675 select SYS_SUPPORTS_BIG_ENDIAN
676 select SYS_SUPPORTS_HIGHMEM
677 select SYS_SUPPORTS_HOTPLUG_CPU
678 select SYS_HAS_CPU_CAVIUM_OCTEON
680 The Octeon simulator is software performance model of the Cavium
681 Octeon Processor. It supports simulating Octeon processors on x86
684 config CAVIUM_OCTEON_REFERENCE_BOARD
685 bool "Cavium Networks Octeon reference board"
687 select 64BIT_PHYS_ADDR
689 select SYS_SUPPORTS_64BIT_KERNEL
690 select SYS_SUPPORTS_BIG_ENDIAN
691 select SYS_SUPPORTS_HIGHMEM
692 select SYS_SUPPORTS_HOTPLUG_CPU
693 select SYS_HAS_EARLY_PRINTK
694 select SYS_HAS_CPU_CAVIUM_OCTEON
697 select ARCH_SUPPORTS_MSI
699 select USB_ARCH_HAS_OHCI
700 select USB_ARCH_HAS_EHCI
702 This option supports all of the Octeon reference boards from Cavium
703 Networks. It builds a kernel that dynamically determines the Octeon
704 CPU type and supports all known board reference implementations.
705 Some of the supported boards are:
712 Say Y here for most Octeon reference boards.
716 source "arch/mips/alchemy/Kconfig"
717 source "arch/mips/bcm63xx/Kconfig"
718 source "arch/mips/jazz/Kconfig"
719 source "arch/mips/jz4740/Kconfig"
720 source "arch/mips/lasat/Kconfig"
721 source "arch/mips/pmc-sierra/Kconfig"
722 source "arch/mips/powertv/Kconfig"
723 source "arch/mips/sgi-ip27/Kconfig"
724 source "arch/mips/sibyte/Kconfig"
725 source "arch/mips/txx9/Kconfig"
726 source "arch/mips/vr41xx/Kconfig"
727 source "arch/mips/cavium-octeon/Kconfig"
728 source "arch/mips/loongson/Kconfig"
732 config RWSEM_GENERIC_SPINLOCK
736 config RWSEM_XCHGADD_ALGORITHM
739 config ARCH_HAS_ILOG2_U32
743 config ARCH_HAS_ILOG2_U64
747 config ARCH_SUPPORTS_OPROFILE
749 default y if !MIPS_MT_SMTC
751 config GENERIC_FIND_NEXT_BIT
755 config GENERIC_HWEIGHT
759 config GENERIC_CALIBRATE_DELAY
763 config GENERIC_CLOCKEVENTS
767 config GENERIC_CMOS_UPDATE
771 config SCHED_OMIT_FRAME_POINTER
775 config GENERIC_HARDIRQS_NO__DO_IRQ
779 # Select some configuration options automatically based on user selections.
784 config ARCH_MAY_HAVE_PC_FDC
833 select ARCH_REQUIRE_GPIOLIB
842 config DMA_NONCOHERENT
844 select NEED_DMA_MAP_STATE
846 config NEED_DMA_MAP_STATE
849 config SYS_HAS_EARLY_PRINTK
853 bool "Support for hot-pluggable CPUs"
854 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
856 Say Y here to allow turning CPUs off and on. CPUs can be
857 controlled through /sys/devices/system/cpu.
858 (Note: power management support will enable this option
859 automatically on SMP systems. )
860 Say N if you want to disable CPU hotplug.
862 config SYS_SUPPORTS_HOTPLUG_CPU
877 config MIPS_DISABLE_OBSOLETE_IDE
886 config GENERIC_ISA_DMA
888 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
891 config GENERIC_ISA_DMA_SUPPORT_BROKEN
893 select GENERIC_ISA_DMA
902 # Endianess selection. Sufficiently obscure so many users don't know what to
903 # answer,so we try hard to limit the available choices. Also the use of a
904 # choice statement should be more obvious to the user.
907 prompt "Endianess selection"
909 Some MIPS machines can be configured for either little or big endian
910 byte order. These modes require different kernels and a different
911 Linux distribution. In general there is one preferred byteorder for a
912 particular system but some systems are just as commonly used in the
913 one or the other endianness.
915 config CPU_BIG_ENDIAN
917 depends on SYS_SUPPORTS_BIG_ENDIAN
919 config CPU_LITTLE_ENDIAN
921 depends on SYS_SUPPORTS_LITTLE_ENDIAN
929 config SYS_SUPPORTS_APM_EMULATION
932 config SYS_SUPPORTS_BIG_ENDIAN
935 config SYS_SUPPORTS_LITTLE_ENDIAN
938 config SYS_SUPPORTS_HUGETLBFS
940 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
967 config IRQ_CPU_OCTEON
970 config MIPS_BOARDS_GEN
973 config PCI_GT64XXX_PCI0
976 config NO_EXCEPT_FILL
987 select DMA_NONCOHERENT
990 select SYS_HAS_CPU_R5500
991 select SYS_SUPPORTS_32BIT_KERNEL
992 select SYS_SUPPORTS_64BIT_KERNEL
993 select SYS_SUPPORTS_BIG_ENDIAN
1000 select DMA_NONCOHERENT
1001 select SYS_HAS_CPU_MIPS32_R2
1002 select SYS_SUPPORTS_32BIT_KERNEL
1003 select SYS_SUPPORTS_LITTLE_ENDIAN
1004 select SYS_SUPPORTS_BIG_ENDIAN
1006 select CPU_MIPSR2_IRQ_VI
1018 select DMA_NONCOHERENT
1020 select SYS_HAS_CPU_MIPS32_R1
1021 select SYS_HAS_EARLY_PRINTK
1022 select SYS_SUPPORTS_32BIT_KERNEL
1025 config SWAP_IO_SPACE
1028 config SERIAL_RM9000
1031 config SGI_HAS_INDYDOG
1043 config SGI_HAS_ZILOG
1046 config SGI_HAS_I8042
1049 config DEFAULT_SGI_PARTITION
1061 config MIPS_L1_CACHE_SHIFT
1063 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1064 default "6" if MIPS_CPU_SCACHE
1065 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1068 config HAVE_STD_PC_SERIAL_PORT
1072 bool "ARC console support"
1073 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1077 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1082 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1091 menu "CPU selection"
1097 config CPU_LOONGSON2E
1099 depends on SYS_HAS_CPU_LOONGSON2E
1100 select CPU_LOONGSON2
1102 The Loongson 2E processor implements the MIPS III instruction set
1103 with many extensions.
1105 It has an internal FPGA northbridge, which is compatiable to
1108 config CPU_LOONGSON2F
1110 depends on SYS_HAS_CPU_LOONGSON2F
1111 select CPU_LOONGSON2
1113 select ARCH_REQUIRE_GPIOLIB
1115 The Loongson 2F processor implements the MIPS III instruction set
1116 with many extensions.
1118 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1119 have a similar programming interface with FPGA northbridge used in
1122 config CPU_MIPS32_R1
1123 bool "MIPS32 Release 1"
1124 depends on SYS_HAS_CPU_MIPS32_R1
1125 select CPU_HAS_PREFETCH
1126 select CPU_SUPPORTS_32BIT_KERNEL
1127 select CPU_SUPPORTS_HIGHMEM
1129 Choose this option to build a kernel for release 1 or later of the
1130 MIPS32 architecture. Most modern embedded systems with a 32-bit
1131 MIPS processor are based on a MIPS32 processor. If you know the
1132 specific type of processor in your system, choose those that one
1133 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1134 Release 2 of the MIPS32 architecture is available since several
1135 years so chances are you even have a MIPS32 Release 2 processor
1136 in which case you should choose CPU_MIPS32_R2 instead for better
1139 config CPU_MIPS32_R2
1140 bool "MIPS32 Release 2"
1141 depends on SYS_HAS_CPU_MIPS32_R2
1142 select CPU_HAS_PREFETCH
1143 select CPU_SUPPORTS_32BIT_KERNEL
1144 select CPU_SUPPORTS_HIGHMEM
1146 Choose this option to build a kernel for release 2 or later of the
1147 MIPS32 architecture. Most modern embedded systems with a 32-bit
1148 MIPS processor are based on a MIPS32 processor. If you know the
1149 specific type of processor in your system, choose those that one
1150 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1152 config CPU_MIPS64_R1
1153 bool "MIPS64 Release 1"
1154 depends on SYS_HAS_CPU_MIPS64_R1
1155 select CPU_HAS_PREFETCH
1156 select CPU_SUPPORTS_32BIT_KERNEL
1157 select CPU_SUPPORTS_64BIT_KERNEL
1158 select CPU_SUPPORTS_HIGHMEM
1159 select CPU_SUPPORTS_HUGEPAGES
1161 Choose this option to build a kernel for release 1 or later of the
1162 MIPS64 architecture. Many modern embedded systems with a 64-bit
1163 MIPS processor are based on a MIPS64 processor. If you know the
1164 specific type of processor in your system, choose those that one
1165 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1166 Release 2 of the MIPS64 architecture is available since several
1167 years so chances are you even have a MIPS64 Release 2 processor
1168 in which case you should choose CPU_MIPS64_R2 instead for better
1171 config CPU_MIPS64_R2
1172 bool "MIPS64 Release 2"
1173 depends on SYS_HAS_CPU_MIPS64_R2
1174 select CPU_HAS_PREFETCH
1175 select CPU_SUPPORTS_32BIT_KERNEL
1176 select CPU_SUPPORTS_64BIT_KERNEL
1177 select CPU_SUPPORTS_HIGHMEM
1178 select CPU_SUPPORTS_HUGEPAGES
1180 Choose this option to build a kernel for release 2 or later of the
1181 MIPS64 architecture. Many modern embedded systems with a 64-bit
1182 MIPS processor are based on a MIPS64 processor. If you know the
1183 specific type of processor in your system, choose those that one
1184 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1188 depends on SYS_HAS_CPU_R3000
1190 select CPU_SUPPORTS_32BIT_KERNEL
1191 select CPU_SUPPORTS_HIGHMEM
1193 Please make sure to pick the right CPU type. Linux/MIPS is not
1194 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1195 *not* work on R4000 machines and vice versa. However, since most
1196 of the supported machines have an R4000 (or similar) CPU, R4x00
1197 might be a safe bet. If the resulting kernel does not work,
1198 try to recompile with R3000.
1202 depends on SYS_HAS_CPU_TX39XX
1203 select CPU_SUPPORTS_32BIT_KERNEL
1207 depends on SYS_HAS_CPU_VR41XX
1208 select CPU_SUPPORTS_32BIT_KERNEL
1209 select CPU_SUPPORTS_64BIT_KERNEL
1211 The options selects support for the NEC VR4100 series of processors.
1212 Only choose this option if you have one of these processors as a
1213 kernel built with this option will not run on any other type of
1214 processor or vice versa.
1218 depends on SYS_HAS_CPU_R4300
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1222 MIPS Technologies R4300-series processors.
1226 depends on SYS_HAS_CPU_R4X00
1227 select CPU_SUPPORTS_32BIT_KERNEL
1228 select CPU_SUPPORTS_64BIT_KERNEL
1230 MIPS Technologies R4000-series processors other than 4300, including
1231 the R4000, R4400, R4600, and 4700.
1235 depends on SYS_HAS_CPU_TX49XX
1236 select CPU_HAS_PREFETCH
1237 select CPU_SUPPORTS_32BIT_KERNEL
1238 select CPU_SUPPORTS_64BIT_KERNEL
1242 depends on SYS_HAS_CPU_R5000
1243 select CPU_SUPPORTS_32BIT_KERNEL
1244 select CPU_SUPPORTS_64BIT_KERNEL
1246 MIPS Technologies R5000-series processors other than the Nevada.
1250 depends on SYS_HAS_CPU_R5432
1251 select CPU_SUPPORTS_32BIT_KERNEL
1252 select CPU_SUPPORTS_64BIT_KERNEL
1256 depends on SYS_HAS_CPU_R5500
1257 select CPU_SUPPORTS_32BIT_KERNEL
1258 select CPU_SUPPORTS_64BIT_KERNEL
1259 select CPU_SUPPORTS_HUGEPAGES
1261 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1266 depends on EXPERIMENTAL
1267 depends on SYS_HAS_CPU_R6000
1268 select CPU_SUPPORTS_32BIT_KERNEL
1270 MIPS Technologies R6000 and R6000A series processors. Note these
1271 processors are extremely rare and the support for them is incomplete.
1275 depends on SYS_HAS_CPU_NEVADA
1276 select CPU_SUPPORTS_32BIT_KERNEL
1277 select CPU_SUPPORTS_64BIT_KERNEL
1279 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1283 depends on EXPERIMENTAL
1284 depends on SYS_HAS_CPU_R8000
1285 select CPU_HAS_PREFETCH
1286 select CPU_SUPPORTS_64BIT_KERNEL
1288 MIPS Technologies R8000 processors. Note these processors are
1289 uncommon and the support for them is incomplete.
1293 depends on SYS_HAS_CPU_R10000
1294 select CPU_HAS_PREFETCH
1295 select CPU_SUPPORTS_32BIT_KERNEL
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select CPU_SUPPORTS_HIGHMEM
1299 MIPS Technologies R10000-series processors.
1303 depends on SYS_HAS_CPU_RM7000
1304 select CPU_HAS_PREFETCH
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_64BIT_KERNEL
1307 select CPU_SUPPORTS_HIGHMEM
1311 depends on SYS_HAS_CPU_RM9000
1312 select CPU_HAS_PREFETCH
1313 select CPU_SUPPORTS_32BIT_KERNEL
1314 select CPU_SUPPORTS_64BIT_KERNEL
1315 select CPU_SUPPORTS_HIGHMEM
1316 select WEAK_ORDERING
1320 depends on SYS_HAS_CPU_SB1
1321 select CPU_SUPPORTS_32BIT_KERNEL
1322 select CPU_SUPPORTS_64BIT_KERNEL
1323 select CPU_SUPPORTS_HIGHMEM
1324 select WEAK_ORDERING
1326 config CPU_CAVIUM_OCTEON
1327 bool "Cavium Octeon processor"
1328 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1330 select IRQ_CPU_OCTEON
1331 select CPU_HAS_PREFETCH
1332 select CPU_SUPPORTS_64BIT_KERNEL
1333 select SYS_SUPPORTS_SMP
1334 select NR_CPUS_DEFAULT_16
1335 select WEAK_ORDERING
1336 select CPU_SUPPORTS_HIGHMEM
1337 select CPU_SUPPORTS_HUGEPAGES
1339 The Cavium Octeon processor is a highly integrated chip containing
1340 many ethernet hardware widgets for networking tasks. The processor
1341 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1342 Full details can be found at http://www.caviumnetworks.com.
1347 config CPU_NOP_WORKAROUNDS
1350 config CPU_JUMP_WORKAROUNDS
1353 config CPU_LOONGSON2F_WORKAROUNDS
1354 bool "Loongson 2F Workarounds"
1356 select CPU_NOP_WORKAROUNDS
1357 select CPU_JUMP_WORKAROUNDS
1359 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1360 require workarounds. Without workarounds the system may hang
1361 unexpectedly. For more information please refer to the gas
1362 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1364 Loongson 2F03 and later have fixed these issues and no workarounds
1365 are needed. The workarounds have no significant side effect on them
1366 but may decrease the performance of the system so this option should
1367 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1370 If unsure, please say Y.
1371 endif # CPU_LOONGSON2F
1373 config SYS_SUPPORTS_ZBOOT
1375 select HAVE_KERNEL_GZIP
1376 select HAVE_KERNEL_BZIP2
1377 select HAVE_KERNEL_LZMA
1378 select HAVE_KERNEL_LZO
1380 config SYS_SUPPORTS_ZBOOT_UART16550
1382 select SYS_SUPPORTS_ZBOOT
1384 config CPU_LOONGSON2
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select CPU_SUPPORTS_64BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1390 config SYS_HAS_CPU_LOONGSON2E
1393 config SYS_HAS_CPU_LOONGSON2F
1395 select CPU_SUPPORTS_CPUFREQ
1396 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1397 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1399 config SYS_HAS_CPU_MIPS32_R1
1402 config SYS_HAS_CPU_MIPS32_R2
1405 config SYS_HAS_CPU_MIPS64_R1
1408 config SYS_HAS_CPU_MIPS64_R2
1411 config SYS_HAS_CPU_R3000
1414 config SYS_HAS_CPU_TX39XX
1417 config SYS_HAS_CPU_VR41XX
1420 config SYS_HAS_CPU_R4300
1423 config SYS_HAS_CPU_R4X00
1426 config SYS_HAS_CPU_TX49XX
1429 config SYS_HAS_CPU_R5000
1432 config SYS_HAS_CPU_R5432
1435 config SYS_HAS_CPU_R5500
1438 config SYS_HAS_CPU_R6000
1441 config SYS_HAS_CPU_NEVADA
1444 config SYS_HAS_CPU_R8000
1447 config SYS_HAS_CPU_R10000
1450 config SYS_HAS_CPU_RM7000
1453 config SYS_HAS_CPU_RM9000
1456 config SYS_HAS_CPU_SB1
1459 config SYS_HAS_CPU_CAVIUM_OCTEON
1463 # CPU may reorder R->R, R->W, W->R, W->W
1464 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1466 config WEAK_ORDERING
1470 # CPU may reorder reads and writes beyond LL/SC
1471 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1473 config WEAK_REORDERING_BEYOND_LLSC
1478 # These two indicate any level of the MIPS32 and MIPS64 architecture
1482 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1486 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1489 # These two indicate the revision of the architecture, either Release 1 or Release 2
1493 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1497 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1499 config SYS_SUPPORTS_32BIT_KERNEL
1501 config SYS_SUPPORTS_64BIT_KERNEL
1503 config CPU_SUPPORTS_32BIT_KERNEL
1505 config CPU_SUPPORTS_64BIT_KERNEL
1507 config CPU_SUPPORTS_CPUFREQ
1509 config CPU_SUPPORTS_ADDRWINCFG
1511 config CPU_SUPPORTS_HUGEPAGES
1513 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1515 config MIPS_PGD_C0_CONTEXT
1517 default y if 64BIT && CPU_MIPSR2
1520 # Set to y for ptrace access to watch registers.
1522 config HARDWARE_WATCHPOINTS
1524 default y if CPU_MIPSR1 || CPU_MIPSR2
1530 prompt "Kernel code model"
1532 You should only select this option if you have a workload that
1533 actually benefits from 64-bit processing or if your machine has
1534 large memory. You will only be presented a single option in this
1535 menu if your system does not support both 32-bit and 64-bit kernels.
1538 bool "32-bit kernel"
1539 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1542 Select this option if you want to build a 32-bit kernel.
1544 bool "64-bit kernel"
1545 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1546 select HAVE_SYSCALL_WRAPPERS
1548 Select this option if you want to build a 64-bit kernel.
1553 prompt "Kernel page size"
1554 default PAGE_SIZE_4KB
1556 config PAGE_SIZE_4KB
1558 depends on !CPU_LOONGSON2
1560 This option select the standard 4kB Linux page size. On some
1561 R3000-family processors this is the only available page size. Using
1562 4kB page size will minimize memory consumption and is therefore
1563 recommended for low memory systems.
1565 config PAGE_SIZE_8KB
1567 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1569 Using 8kB page size will result in higher performance kernel at
1570 the price of higher memory consumption. This option is available
1571 only on R8000 and cnMIPS processors. Note that you will need a
1572 suitable Linux distribution to support this.
1574 config PAGE_SIZE_16KB
1576 depends on !CPU_R3000 && !CPU_TX39XX
1578 Using 16kB page size will result in higher performance kernel at
1579 the price of higher memory consumption. This option is available on
1580 all non-R3000 family processors. Note that you will need a suitable
1581 Linux distribution to support this.
1583 config PAGE_SIZE_32KB
1585 depends on CPU_CAVIUM_OCTEON
1587 Using 32kB page size will result in higher performance kernel at
1588 the price of higher memory consumption. This option is available
1589 only on cnMIPS cores. Note that you will need a suitable Linux
1590 distribution to support this.
1592 config PAGE_SIZE_64KB
1594 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1596 Using 64kB page size will result in higher performance kernel at
1597 the price of higher memory consumption. This option is available on
1598 all non-R3000 family processor. Not that at the time of this
1599 writing this option is still high experimental.
1606 config IP22_CPU_SCACHE
1611 # Support for a MIPS32 / MIPS64 style S-caches
1613 config MIPS_CPU_SCACHE
1617 config R5000_CPU_SCACHE
1621 config RM7000_CPU_SCACHE
1625 config SIBYTE_DMA_PAGEOPS
1626 bool "Use DMA to clear/copy pages"
1629 Instead of using the CPU to zero and copy pages, use a Data Mover
1630 channel. These DMA channels are otherwise unused by the standard
1631 SiByte Linux port. Seems to give a small performance benefit.
1633 config CPU_HAS_PREFETCH
1637 prompt "MIPS MT options"
1639 config MIPS_MT_DISABLED
1640 bool "Disable multithreading support."
1642 Use this option if your workload can't take advantage of
1643 MIPS hardware multithreading support. On systems that don't have
1644 the option of an MT-enabled processor this option will be the only
1645 option in this menu.
1648 bool "Use 1 TC on each available VPE for SMP"
1649 depends on SYS_SUPPORTS_MULTITHREADING
1650 select CPU_MIPSR2_IRQ_VI
1651 select CPU_MIPSR2_IRQ_EI
1653 select NR_CPUS_DEFAULT_2
1655 select SYS_SUPPORTS_SCHED_SMT if SMP
1656 select SYS_SUPPORTS_SMP
1659 This is a kernel model which is known a VSMP but lately has been
1660 marketesed into SMVP.
1661 Virtual SMP uses the processor's VPEs to implement virtual
1662 processors. In currently available configuration of the 34K processor
1663 this allows for a dual processor. Both processors will share the same
1664 primary caches; each will obtain the half of the TLB for it's own
1665 exclusive use. For a layman this model can be described as similar to
1666 what Intel calls Hyperthreading.
1668 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1671 bool "SMTC: Use all TCs on all VPEs for SMP"
1672 depends on CPU_MIPS32_R2
1673 #depends on CPU_MIPS64_R2 # once there is hardware ...
1674 depends on SYS_SUPPORTS_MULTITHREADING
1675 select CPU_MIPSR2_IRQ_VI
1676 select CPU_MIPSR2_IRQ_EI
1678 select NR_CPUS_DEFAULT_8
1680 select SYS_SUPPORTS_SMP
1683 This is a kernel model which is known a SMTC or lately has been
1684 marketesed into SMVP.
1685 is presenting the available TC's of the core as processors to Linux.
1686 On currently available 34K processors this means a Linux system will
1687 see up to 5 processors. The implementation of the SMTC kernel differs
1688 significantly from VSMP and cannot efficiently coexist in the same
1689 kernel binary so the choice between VSMP and SMTC is a compile time
1692 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1700 bool "SMT (multithreading) scheduler support"
1701 depends on SYS_SUPPORTS_SCHED_SMT
1704 SMT scheduler support improves the CPU scheduler's decision making
1705 when dealing with MIPS MT enabled cores at a cost of slightly
1706 increased overhead in some places. If unsure say N here.
1708 config SYS_SUPPORTS_SCHED_SMT
1712 config SYS_SUPPORTS_MULTITHREADING
1715 config MIPS_MT_FPAFF
1716 bool "Dynamic FPU affinity for FP-intensive threads"
1718 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1720 config MIPS_VPE_LOADER
1721 bool "VPE loader support."
1722 depends on SYS_SUPPORTS_MULTITHREADING
1723 select CPU_MIPSR2_IRQ_VI
1724 select CPU_MIPSR2_IRQ_EI
1727 Includes a loader for loading an elf relocatable object
1728 onto another VPE and running it.
1730 config MIPS_MT_SMTC_IM_BACKSTOP
1731 bool "Use per-TC register bits as backstop for inhibited IM bits"
1732 depends on MIPS_MT_SMTC
1735 To support multiple TC microthreads acting as "CPUs" within
1736 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1737 during interrupt handling. To support legacy drivers and interrupt
1738 controller management code, SMTC has a "backstop" to track and
1739 if necessary restore the interrupt mask. This has some performance
1740 impact on interrupt service overhead.
1742 config MIPS_MT_SMTC_IRQAFF
1743 bool "Support IRQ affinity API"
1744 depends on MIPS_MT_SMTC
1747 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1748 for SMTC Linux kernel. Requires platform support, of which
1749 an example can be found in the MIPS kernel i8259 and Malta
1750 platform code. Adds some overhead to interrupt dispatch, and
1751 should be used only if you know what you are doing.
1753 config MIPS_VPE_LOADER_TOM
1754 bool "Load VPE program into memory hidden from linux"
1755 depends on MIPS_VPE_LOADER
1758 The loader can use memory that is present but has been hidden from
1759 Linux using the kernel command line option "mem=xxMB". It's up to
1760 you to ensure the amount you put in the option and the space your
1761 program requires is less or equal to the amount physically present.
1763 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1764 config MIPS_VPE_APSP_API
1765 bool "Enable support for AP/SP API (RTLX)"
1766 depends on MIPS_VPE_LOADER
1769 config MIPS_APSP_KSPD
1771 depends on MIPS_VPE_APSP_API
1774 KSPD is a kernel daemon that accepts syscall requests from the SP
1775 side, actions them and returns the results. It also handles the
1776 "exit" syscall notifying other kernel modules the SP program is
1777 exiting. You probably want to say yes here.
1780 bool "MIPS CMP framework support"
1781 depends on SYS_SUPPORTS_MIPS_CMP
1783 select SYS_SUPPORTS_SMP
1784 select SYS_SUPPORTS_SCHED_SMT if SMP
1785 select WEAK_ORDERING
1788 This is a placeholder option for the GCMP work. It will need to
1789 be handled differently...
1791 config SB1_PASS_1_WORKAROUNDS
1793 depends on CPU_SB1_PASS_1
1796 config SB1_PASS_2_WORKAROUNDS
1798 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1801 config SB1_PASS_2_1_WORKAROUNDS
1803 depends on CPU_SB1 && CPU_SB1_PASS_2
1806 config 64BIT_PHYS_ADDR
1809 config ARCH_PHYS_ADDR_T_64BIT
1810 def_bool 64BIT_PHYS_ADDR
1812 config CPU_HAS_SMARTMIPS
1813 depends on SYS_SUPPORTS_SMARTMIPS
1814 bool "Support for the SmartMIPS ASE"
1816 SmartMIPS is a extension of the MIPS32 architecture aimed at
1817 increased security at both hardware and software level for
1818 smartcards. Enabling this option will allow proper use of the
1819 SmartMIPS instructions by Linux applications. However a kernel with
1820 this option will not work on a MIPS core without SmartMIPS core. If
1821 you don't know you probably don't have SmartMIPS and should say N
1828 # Vectored interrupt mode is an R2 feature
1830 config CPU_MIPSR2_IRQ_VI
1834 # Extended interrupt mode is an R2 feature
1836 config CPU_MIPSR2_IRQ_EI
1841 depends on !CPU_R3000
1844 config GENERIC_CLOCKEVENTS_BROADCAST
1850 config CPU_DADDI_WORKAROUNDS
1853 config CPU_R4000_WORKAROUNDS
1855 select CPU_R4400_WORKAROUNDS
1857 config CPU_R4400_WORKAROUNDS
1861 # Use the generic interrupt handling code in kernel/irq/:
1863 config GENERIC_HARDIRQS
1867 config GENERIC_IRQ_PROBE
1875 # - Highmem only makes sense for the 32-bit kernel.
1876 # - The current highmem code will only work properly on physically indexed
1877 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1878 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1879 # moment we protect the user and offer the highmem option only on machines
1880 # where it's known to be safe. This will not offer highmem on a few systems
1881 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1882 # indexed CPUs but we're playing safe.
1883 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1884 # know they might have memory configurations that could make use of highmem
1888 bool "High Memory Support"
1889 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1891 config CPU_SUPPORTS_HIGHMEM
1894 config SYS_SUPPORTS_HIGHMEM
1897 config SYS_SUPPORTS_SMARTMIPS
1900 config ARCH_FLATMEM_ENABLE
1902 depends on !NUMA && !CPU_LOONGSON2
1904 config ARCH_DISCONTIGMEM_ENABLE
1906 default y if SGI_IP27
1908 Say Y to support efficient handling of discontiguous physical memory,
1909 for architectures which are either NUMA (Non-Uniform Memory Access)
1910 or have huge holes in the physical address space for other reasons.
1911 See <file:Documentation/vm/numa> for more.
1913 config ARCH_POPULATES_NODE_MAP
1916 config ARCH_SPARSEMEM_ENABLE
1918 select SPARSEMEM_STATIC
1922 depends on SYS_SUPPORTS_NUMA
1924 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1925 Access). This option improves performance on systems with more
1926 than two nodes; on two node systems it is generally better to
1927 leave it disabled; on single node systems disable this option
1930 config SYS_SUPPORTS_NUMA
1936 depends on NEED_MULTIPLE_NODES
1941 bool "Multi-Processing support"
1942 depends on SYS_SUPPORTS_SMP
1944 select USE_GENERIC_SMP_HELPERS
1946 This enables support for systems with more than one CPU. If you have
1947 a system with only one CPU, like most personal computers, say N. If
1948 you have a system with more than one CPU, say Y.
1950 If you say N here, the kernel will run on single and multiprocessor
1951 machines, but will use only one CPU of a multiprocessor machine. If
1952 you say Y here, the kernel will run on many, but not all,
1953 singleprocessor machines. On a singleprocessor machine, the kernel
1954 will run faster if you say N here.
1956 People using multiprocessor machines who say Y here should also say
1957 Y to "Enhanced Real Time Clock Support", below.
1959 See also the SMP-HOWTO available at
1960 <http://www.tldp.org/docs.html#howto>.
1962 If you don't know what to do here, say N.
1967 config SYS_SUPPORTS_MIPS_CMP
1970 config SYS_SUPPORTS_SMP
1973 config NR_CPUS_DEFAULT_1
1976 config NR_CPUS_DEFAULT_2
1979 config NR_CPUS_DEFAULT_4
1982 config NR_CPUS_DEFAULT_8
1985 config NR_CPUS_DEFAULT_16
1988 config NR_CPUS_DEFAULT_32
1991 config NR_CPUS_DEFAULT_64
1995 int "Maximum number of CPUs (2-64)"
1996 range 1 64 if NR_CPUS_DEFAULT_1
1998 default "1" if NR_CPUS_DEFAULT_1
1999 default "2" if NR_CPUS_DEFAULT_2
2000 default "4" if NR_CPUS_DEFAULT_4
2001 default "8" if NR_CPUS_DEFAULT_8
2002 default "16" if NR_CPUS_DEFAULT_16
2003 default "32" if NR_CPUS_DEFAULT_32
2004 default "64" if NR_CPUS_DEFAULT_64
2006 This allows you to specify the maximum number of CPUs which this
2007 kernel will support. The maximum supported value is 32 for 32-bit
2008 kernel and 64 for 64-bit kernels; the minimum value which makes
2009 sense is 1 for Qemu (useful only for kernel debugging purposes)
2010 and 2 for all others.
2012 This is purely to save memory - each supported CPU adds
2013 approximately eight kilobytes to the kernel image. For best
2014 performance should round up your number of processors to the next
2017 source "kernel/time/Kconfig"
2020 # Timer Interrupt Frequency Configuration
2024 prompt "Timer frequency"
2027 Allows the configuration of the timer frequency.
2030 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2033 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2036 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2039 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2042 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2045 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2048 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2052 config SYS_SUPPORTS_48HZ
2055 config SYS_SUPPORTS_100HZ
2058 config SYS_SUPPORTS_128HZ
2061 config SYS_SUPPORTS_250HZ
2064 config SYS_SUPPORTS_256HZ
2067 config SYS_SUPPORTS_1000HZ
2070 config SYS_SUPPORTS_1024HZ
2073 config SYS_SUPPORTS_ARBIT_HZ
2075 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2076 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2077 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2078 !SYS_SUPPORTS_1024HZ
2083 default 100 if HZ_100
2084 default 128 if HZ_128
2085 default 250 if HZ_250
2086 default 256 if HZ_256
2087 default 1000 if HZ_1000
2088 default 1024 if HZ_1024
2090 source "kernel/Kconfig.preempt"
2092 config MIPS_INSANE_LARGE
2093 bool "Support for large 64-bit configurations"
2094 depends on CPU_R10000 && 64BIT
2096 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2097 previous 64-bit processors which only supported 40 bit / 1TB. If you
2098 need processes of more than 1TB virtual address space, say Y here.
2099 This will result in additional memory usage, so it is not
2100 recommended for normal users.
2103 bool "Kexec system call (EXPERIMENTAL)"
2104 depends on EXPERIMENTAL
2106 kexec is a system call that implements the ability to shutdown your
2107 current kernel, and to start another kernel. It is like a reboot
2108 but it is independent of the system firmware. And like a reboot
2109 you can start any kernel with it, not just Linux.
2111 The name comes from the similarity to the exec system call.
2113 It is an ongoing process to be certain the hardware in a machine
2114 is properly shutdown, so do not be surprised if this code does not
2115 initially work for you. It may help to enable device hotplugging
2116 support. As of this writing the exact hardware interface is
2117 strongly in flux, so no good recommendation can be made.
2120 bool "Enable seccomp to safely compute untrusted bytecode"
2124 This kernel feature is useful for number crunching applications
2125 that may need to compute untrusted bytecode during their
2126 execution. By using pipes or other transports made available to
2127 the process as file descriptors supporting the read/write
2128 syscalls, it's possible to isolate those applications in
2129 their own address space using seccomp. Once seccomp is
2130 enabled via /proc/<pid>/seccomp, it cannot be disabled
2131 and the task is only allowed to execute a few safe syscalls
2132 defined by each seccomp mode.
2134 If unsure, say Y. Only embedded should say N here.
2137 bool "Flattened Device Tree support"
2141 Include support for flattened device tree machine descriptions.
2145 config LOCKDEP_SUPPORT
2149 config STACKTRACE_SUPPORT
2153 source "init/Kconfig"
2155 source "kernel/Kconfig.freezer"
2157 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2165 bool "Support for PCI controller"
2166 depends on HW_HAS_PCI
2169 Find out whether you have a PCI motherboard. PCI is the name of a
2170 bus system, i.e. the way the CPU talks to the other stuff inside
2171 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2177 source "drivers/pci/Kconfig"
2180 # ISA support is now enabled via select. Too many systems still have the one
2181 # or other ISA chip on the board that users don't know about so don't expect
2182 # users to choose the right thing ...
2189 depends on HW_HAS_EISA
2191 select GENERIC_ISA_DMA
2193 The Extended Industry Standard Architecture (EISA) bus was
2194 developed as an open alternative to the IBM MicroChannel bus.
2196 The EISA bus provided some of the features of the IBM MicroChannel
2197 bus while maintaining backward compatibility with cards made for
2198 the older ISA bus. The EISA bus saw limited use between 1988 and
2199 1995 when it was made obsolete by the PCI bus.
2201 Say Y here if you are building a kernel for an EISA-based machine.
2205 source "drivers/eisa/Kconfig"
2208 bool "TURBOchannel support"
2209 depends on MACH_DECSTATION
2211 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2212 processors. TURBOchannel programming specifications are available
2214 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2216 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2217 Linux driver support status is documented at:
2218 <http://www.linux-mips.org/wiki/DECstation>
2221 # bool "Access.Bus support"
2230 select MIPS_EXTERNAL_TIMER
2235 source "drivers/pcmcia/Kconfig"
2237 source "drivers/pci/hotplug/Kconfig"
2241 menu "Executable file formats"
2243 source "fs/Kconfig.binfmt"
2248 config MIPS32_COMPAT
2249 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2252 Select this option if you want Linux/MIPS 32-bit binary
2253 compatibility. Since all software available for Linux/MIPS is
2254 currently 32-bit you should say Y here.
2258 depends on MIPS32_COMPAT
2261 config SYSVIPC_COMPAT
2263 depends on COMPAT && SYSVIPC
2267 bool "Kernel support for o32 binaries"
2268 depends on MIPS32_COMPAT
2270 Select this option if you want to run o32 binaries. These are pure
2271 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2272 existing binaries are in this format.
2277 bool "Kernel support for n32 binaries"
2278 depends on MIPS32_COMPAT
2280 Select this option if you want to run n32 binaries. These are
2281 64-bit binaries using 32-bit quantities for addressing and certain
2282 data that would normally be 64-bit. They are used in special
2289 default y if MIPS32_O32 || MIPS32_N32
2293 menu "Power management options"
2295 config ARCH_HIBERNATION_POSSIBLE
2297 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2299 config ARCH_SUSPEND_POSSIBLE
2301 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2303 source "kernel/power/Kconfig"
2307 source "arch/mips/kernel/cpufreq/Kconfig"
2309 source "net/Kconfig"
2311 source "drivers/Kconfig"
2315 source "arch/mips/Kconfig.debug"
2317 source "security/Kconfig"
2319 source "crypto/Kconfig"
2321 source "lib/Kconfig"