4 select HAVE_GENERIC_DMA_COHERENT
8 # Horrible source of confusion. Die, die, die ...
10 select RTC_LIB if !LEMOTE_FULOONG2E
12 mainmenu "Linux/MIPS Kernel Configuration"
14 menu "Machine selection"
24 bool "Alchemy processor based machines"
25 select SYS_SUPPORTS_ZBOOT
28 bool "Texas Instruments AR7"
30 select DMA_NONCOHERENT
36 select SYS_HAS_CPU_MIPS32_R1
37 select SYS_HAS_EARLY_PRINTK
38 select SYS_SUPPORTS_32BIT_KERNEL
39 select SYS_SUPPORTS_LITTLE_ENDIAN
40 select SYS_SUPPORTS_ZBOOT_UART16550
45 Support for the Texas Instruments AR7 System-on-a-Chip
46 family: TNETD7100, 7200 and 7300.
49 bool "Basler eXcite smart camera"
58 select SYS_HAS_CPU_RM9000
59 select SYS_SUPPORTS_32BIT_KERNEL
60 select SYS_SUPPORTS_BIG_ENDIAN
62 The eXcite is a smart camera platform manufactured by
63 Basler Vision Technologies AG.
66 bool "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_PCICORE_HOSTMODE if PCI
81 select SYS_HAS_EARLY_PRINTK
84 Support for BCM47XX based boards
87 bool "Broadcom BCM63XX based boards"
90 select DMA_NONCOHERENT
92 select SYS_HAS_CPU_MIPS32_R1
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_BIG_ENDIAN
95 select SYS_HAS_EARLY_PRINTK
97 select ARCH_REQUIRE_GPIOLIB
99 Support for BCM63XX based boards
106 select DMA_NONCOHERENT
112 select PCI_GT64XXX_PCI0
114 select SYS_HAS_CPU_NEVADA
115 select SYS_HAS_EARLY_PRINTK
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_64BIT_KERNEL
118 select SYS_SUPPORTS_LITTLE_ENDIAN
120 config MACH_DECSTATION
127 select CPU_DADDI_WORKAROUNDS if 64BIT
128 select CPU_R4000_WORKAROUNDS if 64BIT
129 select CPU_R4400_WORKAROUNDS if 64BIT
130 select DMA_NONCOHERENT
133 select SYS_HAS_CPU_R3000
134 select SYS_HAS_CPU_R4X00
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
137 select SYS_SUPPORTS_LITTLE_ENDIAN
138 select SYS_SUPPORTS_128HZ
139 select SYS_SUPPORTS_256HZ
140 select SYS_SUPPORTS_1024HZ
142 This enables support for DEC's MIPS based workstations. For details
143 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
144 DECstation porting pages on <http://decstation.unix-ag.org/>.
146 If you have one of the following DECstation Models you definitely
147 want to choose R4xx0 for the CPU Type:
154 otherwise choose R3000.
157 bool "Jazz family of machines"
160 select ARCH_MAY_HAVE_PC_FDC
163 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
164 select GENERIC_ISA_DMA
169 select SYS_HAS_CPU_R4X00
170 select SYS_SUPPORTS_32BIT_KERNEL
171 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
172 select SYS_SUPPORTS_100HZ
174 This a family of machines based on the MIPS R4030 chipset which was
175 used by several vendors to build RISC/os and Windows NT workstations.
176 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
177 Olivetti M700-10 workstations.
180 bool "LASAT Networks platforms"
183 select DMA_NONCOHERENT
184 select SYS_HAS_EARLY_PRINTK
187 select PCI_GT64XXX_PCI0
189 select R5000_CPU_SCACHE
190 select SYS_HAS_CPU_R5000
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
193 select SYS_SUPPORTS_LITTLE_ENDIAN
196 bool "Loongson family of machines"
197 select SYS_SUPPORTS_ZBOOT_UART16550
199 This enables the support of Loongson family of machines.
201 Loongson is a family of general-purpose MIPS-compatible CPUs.
202 developed at Institute of Computing Technology (ICT),
203 Chinese Academy of Sciences (CAS) in the People's Republic
204 of China. The chief architect is Professor Weiwu Hu.
207 bool "MIPS Malta board"
208 select ARCH_MAY_HAVE_PC_FDC
213 select DMA_NONCOHERENT
214 select GENERIC_ISA_DMA
220 select MIPS_BOARDS_GEN
222 select MIPS_CPU_SCACHE
223 select PCI_GT64XXX_PCI0
226 select SYS_HAS_CPU_MIPS32_R1
227 select SYS_HAS_CPU_MIPS32_R2
228 select SYS_HAS_CPU_MIPS64_R1
229 select SYS_HAS_CPU_NEVADA
230 select SYS_HAS_CPU_RM7000
231 select SYS_HAS_EARLY_PRINTK
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_64BIT_KERNEL
234 select SYS_SUPPORTS_BIG_ENDIAN
235 select SYS_SUPPORTS_LITTLE_ENDIAN
236 select SYS_SUPPORTS_MIPS_CMP
237 select SYS_SUPPORTS_MULTITHREADING
238 select SYS_SUPPORTS_SMARTMIPS
239 select SYS_SUPPORTS_ZBOOT
241 This enables support for the MIPS Technologies Malta evaluation
245 bool 'MIPS simulator (MIPSsim)'
248 select DMA_NONCOHERENT
249 select SYS_HAS_EARLY_PRINTK
252 select SYS_HAS_CPU_MIPS32_R1
253 select SYS_HAS_CPU_MIPS32_R2
254 select SYS_HAS_EARLY_PRINTK
255 select SYS_SUPPORTS_32BIT_KERNEL
256 select SYS_SUPPORTS_BIG_ENDIAN
257 select SYS_SUPPORTS_MULTITHREADING
258 select SYS_SUPPORTS_LITTLE_ENDIAN
260 This option enables support for MIPS Technologies MIPSsim software
264 bool "NEC EMMA2RH Mark-eins board"
268 This enables support for the NEC Electronics Mark-eins boards.
271 bool "NEC VR4100 series based machines"
274 select SYS_HAS_CPU_VR41XX
275 select ARCH_REQUIRE_GPIOLIB
278 bool "NXP STB220 board"
281 Support for NXP Semiconductors STB220 Development Board.
288 Support for NXP Semiconductors STB225 Development Board.
291 bool "NXP PNX8550 based JBS board"
293 select SYS_SUPPORTS_LITTLE_ENDIAN
295 config PNX8550_STB810
296 bool "NXP PNX8550 based STB810 board"
298 select SYS_SUPPORTS_LITTLE_ENDIAN
301 bool "PMC-Sierra MSP chipsets"
302 depends on EXPERIMENTAL
303 select DMA_NONCOHERENT
305 select NO_EXCEPT_FILL
307 select SYS_HAS_CPU_MIPS32_R1
308 select SYS_HAS_CPU_MIPS32_R2
309 select SYS_SUPPORTS_32BIT_KERNEL
310 select SYS_SUPPORTS_BIG_ENDIAN
313 select SERIAL_8250_CONSOLE
315 This adds support for the PMC-Sierra family of Multi-Service
316 Processor System-On-A-Chips. These parts include a number
317 of integrated peripherals, interfaces and DSPs in addition to
318 a variety of MIPS cores.
321 bool "PMC-Sierra Yosemite eval board"
330 select SYS_HAS_CPU_RM9000
331 select SYS_HAS_EARLY_PRINTK
332 select SYS_SUPPORTS_32BIT_KERNEL
333 select SYS_SUPPORTS_64BIT_KERNEL
334 select SYS_SUPPORTS_BIG_ENDIAN
335 select SYS_SUPPORTS_HIGHMEM
336 select SYS_SUPPORTS_SMP
338 Yosemite is an evaluation board for the RM9000x2 processor
339 manufactured by PMC-Sierra.
342 bool "SGI IP22 (Indy/Indigo2)"
348 select DEFAULT_SGI_PARTITION
349 select DMA_NONCOHERENT
353 select IP22_CPU_SCACHE
355 select GENERIC_ISA_DMA_SUPPORT_BROKEN
357 select SGI_HAS_INDYDOG
363 select SYS_HAS_CPU_R4X00
364 select SYS_HAS_CPU_R5000
366 # Disable EARLY_PRINTK for now since it leads to overwritten prom
367 # memory during early boot on some machines.
369 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
370 # for a more details discussion
372 # select SYS_HAS_EARLY_PRINTK
373 select SYS_SUPPORTS_32BIT_KERNEL
374 select SYS_SUPPORTS_64BIT_KERNEL
375 select SYS_SUPPORTS_BIG_ENDIAN
377 This are the SGI Indy, Challenge S and Indigo2, as well as certain
378 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
379 that runs on these, say Y here.
382 bool "SGI IP27 (Origin200/2000)"
386 select DEFAULT_SGI_PARTITION
388 select SYS_HAS_EARLY_PRINTK
390 select NR_CPUS_DEFAULT_64
391 select SYS_HAS_CPU_R10000
392 select SYS_SUPPORTS_64BIT_KERNEL
393 select SYS_SUPPORTS_BIG_ENDIAN
394 select SYS_SUPPORTS_NUMA
395 select SYS_SUPPORTS_SMP
397 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
398 workstations. To compile a Linux kernel that runs on these, say Y
402 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
403 depends on EXPERIMENTAL
409 select DEFAULT_SGI_PARTITION
410 select DMA_NONCOHERENT
411 select GENERIC_ISA_DMA_SUPPORT_BROKEN
417 select SGI_HAS_INDYDOG
423 select SYS_HAS_CPU_R10000
425 # Disable EARLY_PRINTK for now since it leads to overwritten prom
426 # memory during early boot on some machines.
428 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
429 # for a more details discussion
431 # select SYS_HAS_EARLY_PRINTK
432 select SYS_SUPPORTS_64BIT_KERNEL
433 select SYS_SUPPORTS_BIG_ENDIAN
435 This is the SGI Indigo2 with R10000 processor. To compile a Linux
436 kernel that runs on these, say Y here.
445 select DMA_NONCOHERENT
448 select R5000_CPU_SCACHE
449 select RM7000_CPU_SCACHE
450 select SYS_HAS_CPU_R5000
451 select SYS_HAS_CPU_R10000 if BROKEN
452 select SYS_HAS_CPU_RM7000
453 select SYS_HAS_CPU_NEVADA
454 select SYS_SUPPORTS_64BIT_KERNEL
455 select SYS_SUPPORTS_BIG_ENDIAN
457 If you want this kernel to run on SGI O2 workstation, say Y here.
460 bool "Sibyte BCM91120C-CRhine"
461 depends on EXPERIMENTAL
464 select SIBYTE_BCM1120
466 select SYS_HAS_CPU_SB1
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_LITTLE_ENDIAN
471 bool "Sibyte BCM91120x-Carmel"
472 depends on EXPERIMENTAL
475 select SIBYTE_BCM1120
477 select SYS_HAS_CPU_SB1
478 select SYS_SUPPORTS_BIG_ENDIAN
479 select SYS_SUPPORTS_LITTLE_ENDIAN
482 bool "Sibyte BCM91125C-CRhone"
483 depends on EXPERIMENTAL
486 select SIBYTE_BCM1125
488 select SYS_HAS_CPU_SB1
489 select SYS_SUPPORTS_BIG_ENDIAN
490 select SYS_SUPPORTS_HIGHMEM
491 select SYS_SUPPORTS_LITTLE_ENDIAN
494 bool "Sibyte BCM91125E-Rhone"
495 depends on EXPERIMENTAL
498 select SIBYTE_BCM1125H
500 select SYS_HAS_CPU_SB1
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_LITTLE_ENDIAN
505 bool "Sibyte BCM91250A-SWARM"
508 select NR_CPUS_DEFAULT_2
511 select SYS_HAS_CPU_SB1
512 select SYS_SUPPORTS_BIG_ENDIAN
513 select SYS_SUPPORTS_HIGHMEM
514 select SYS_SUPPORTS_LITTLE_ENDIAN
515 select ZONE_DMA32 if 64BIT
517 config SIBYTE_LITTLESUR
518 bool "Sibyte BCM91250C2-LittleSur"
519 depends on EXPERIMENTAL
522 select NR_CPUS_DEFAULT_2
525 select SYS_HAS_CPU_SB1
526 select SYS_SUPPORTS_BIG_ENDIAN
527 select SYS_SUPPORTS_HIGHMEM
528 select SYS_SUPPORTS_LITTLE_ENDIAN
530 config SIBYTE_SENTOSA
531 bool "Sibyte BCM91250E-Sentosa"
532 depends on EXPERIMENTAL
535 select NR_CPUS_DEFAULT_2
538 select SYS_HAS_CPU_SB1
539 select SYS_SUPPORTS_BIG_ENDIAN
540 select SYS_SUPPORTS_LITTLE_ENDIAN
543 bool "Sibyte BCM91480B-BigSur"
546 select NR_CPUS_DEFAULT_4
547 select SIBYTE_BCM1x80
549 select SYS_HAS_CPU_SB1
550 select SYS_SUPPORTS_BIG_ENDIAN
551 select SYS_SUPPORTS_HIGHMEM
552 select SYS_SUPPORTS_LITTLE_ENDIAN
553 select ZONE_DMA32 if 64BIT
556 bool "SNI RM200/300/400"
557 select ARC if CPU_LITTLE_ENDIAN
558 select ARC32 if CPU_LITTLE_ENDIAN
559 select SNIPROM if CPU_BIG_ENDIAN
560 select ARCH_MAY_HAVE_PC_FDC
564 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
565 select DMA_NONCOHERENT
566 select GENERIC_ISA_DMA
573 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
574 select SYS_HAS_CPU_R4X00
575 select SYS_HAS_CPU_R5000
576 select SYS_HAS_CPU_R10000
577 select R5000_CPU_SCACHE
578 select SYS_HAS_EARLY_PRINTK
579 select SYS_SUPPORTS_32BIT_KERNEL
580 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_HIGHMEM
583 select SYS_SUPPORTS_LITTLE_ENDIAN
585 The SNI RM200/300/400 are MIPS-based machines manufactured by
586 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
587 Technology and now in turn merged with Fujitsu. Say Y here to
588 support this machine type.
591 bool "Toshiba TX39 series based machines"
594 bool "Toshiba TX49 series based machines"
596 config MIKROTIK_RB532
597 bool "Mikrotik RB532 boards"
600 select DMA_NONCOHERENT
603 select SYS_HAS_CPU_MIPS32_R1
604 select SYS_SUPPORTS_32BIT_KERNEL
605 select SYS_SUPPORTS_LITTLE_ENDIAN
608 select ARCH_REQUIRE_GPIOLIB
610 Support the Mikrotik(tm) RouterBoard 532 series,
611 based on the IDT RC32434 SoC.
614 bool "Wind River PPMC board"
619 select DMA_NONCOHERENT
621 select PCI_GT64XXX_PCI0
623 select SYS_HAS_CPU_MIPS32_R1
624 select SYS_HAS_CPU_MIPS32_R2
625 select SYS_HAS_CPU_MIPS64_R1
626 select SYS_HAS_CPU_NEVADA
627 select SYS_HAS_CPU_RM7000
628 select SYS_SUPPORTS_32BIT_KERNEL
629 select SYS_SUPPORTS_64BIT_KERNEL
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select SYS_SUPPORTS_LITTLE_ENDIAN
633 This enables support for the Wind River MIPS32 4KC PPMC evaluation
634 board, which is based on GT64120 bridge chip.
636 config CAVIUM_OCTEON_SIMULATOR
637 bool "Cavium Networks Octeon Simulator"
639 select 64BIT_PHYS_ADDR
641 select SYS_SUPPORTS_64BIT_KERNEL
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select SYS_SUPPORTS_HIGHMEM
644 select SYS_SUPPORTS_HOTPLUG_CPU
645 select SYS_HAS_CPU_CAVIUM_OCTEON
647 The Octeon simulator is software performance model of the Cavium
648 Octeon Processor. It supports simulating Octeon processors on x86
651 config CAVIUM_OCTEON_REFERENCE_BOARD
652 bool "Cavium Networks Octeon reference board"
654 select 64BIT_PHYS_ADDR
656 select SYS_SUPPORTS_64BIT_KERNEL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select SYS_SUPPORTS_HIGHMEM
659 select SYS_SUPPORTS_HOTPLUG_CPU
660 select SYS_HAS_EARLY_PRINTK
661 select SYS_HAS_CPU_CAVIUM_OCTEON
664 select ARCH_SUPPORTS_MSI
666 This option supports all of the Octeon reference boards from Cavium
667 Networks. It builds a kernel that dynamically determines the Octeon
668 CPU type and supports all known board reference implementations.
669 Some of the supported boards are:
676 Say Y here for most Octeon reference boards.
680 source "arch/mips/alchemy/Kconfig"
681 source "arch/mips/basler/excite/Kconfig"
682 source "arch/mips/bcm63xx/Kconfig"
683 source "arch/mips/jazz/Kconfig"
684 source "arch/mips/lasat/Kconfig"
685 source "arch/mips/pmc-sierra/Kconfig"
686 source "arch/mips/sgi-ip27/Kconfig"
687 source "arch/mips/sibyte/Kconfig"
688 source "arch/mips/txx9/Kconfig"
689 source "arch/mips/vr41xx/Kconfig"
690 source "arch/mips/cavium-octeon/Kconfig"
691 source "arch/mips/loongson/Kconfig"
695 config RWSEM_GENERIC_SPINLOCK
699 config RWSEM_XCHGADD_ALGORITHM
702 config ARCH_HAS_ILOG2_U32
706 config ARCH_HAS_ILOG2_U64
710 config ARCH_SUPPORTS_OPROFILE
712 default y if !MIPS_MT_SMTC
714 config GENERIC_FIND_NEXT_BIT
718 config GENERIC_HWEIGHT
722 config GENERIC_CALIBRATE_DELAY
726 config GENERIC_CLOCKEVENTS
734 config GENERIC_CMOS_UPDATE
738 config SCHED_OMIT_FRAME_POINTER
742 config GENERIC_HARDIRQS_NO__DO_IRQ
746 # Select some configuration options automatically based on user selections.
751 config ARCH_MAY_HAVE_PC_FDC
797 select ARCH_REQUIRE_GPIOLIB
806 config DMA_NONCOHERENT
808 select DMA_NEED_PCI_MAP_STATE
810 config DMA_NEED_PCI_MAP_STATE
814 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
815 depends on SYS_HAS_EARLY_PRINTK
818 This option enables special console drivers which allow the kernel
819 to print messages very early in the bootup process.
821 This is useful for kernel debugging when your machine crashes very
822 early before the console code is initialized. For normal operation,
823 it is not recommended because it looks ugly on some machines and
824 doesn't cooperate with an X server. You should normally say N here,
825 unless you want to debug such a crash.
827 config SYS_HAS_EARLY_PRINTK
831 bool "Support for hot-pluggable CPUs"
832 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
834 Say Y here to allow turning CPUs off and on. CPUs can be
835 controlled through /sys/devices/system/cpu.
836 (Note: power management support will enable this option
837 automatically on SMP systems. )
838 Say N if you want to disable CPU hotplug.
840 config SYS_SUPPORTS_HOTPLUG_CPU
855 config MIPS_DISABLE_OBSOLETE_IDE
864 config GENERIC_ISA_DMA
866 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
868 config GENERIC_ISA_DMA_SUPPORT_BROKEN
870 select GENERIC_ISA_DMA
876 # Endianess selection. Sufficiently obscure so many users don't know what to
877 # answer,so we try hard to limit the available choices. Also the use of a
878 # choice statement should be more obvious to the user.
881 prompt "Endianess selection"
883 Some MIPS machines can be configured for either little or big endian
884 byte order. These modes require different kernels and a different
885 Linux distribution. In general there is one preferred byteorder for a
886 particular system but some systems are just as commonly used in the
887 one or the other endianness.
889 config CPU_BIG_ENDIAN
891 depends on SYS_SUPPORTS_BIG_ENDIAN
893 config CPU_LITTLE_ENDIAN
895 depends on SYS_SUPPORTS_LITTLE_ENDIAN
900 config SYS_SUPPORTS_APM_EMULATION
903 config SYS_SUPPORTS_BIG_ENDIAN
906 config SYS_SUPPORTS_LITTLE_ENDIAN
909 config SYS_SUPPORTS_HUGETLBFS
911 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
938 config IRQ_CPU_OCTEON
941 config MIPS_BOARDS_GEN
944 config PCI_GT64XXX_PCI0
947 config NO_EXCEPT_FILL
958 select DMA_NONCOHERENT
961 select SYS_HAS_CPU_R5500
962 select SYS_SUPPORTS_32BIT_KERNEL
963 select SYS_SUPPORTS_64BIT_KERNEL
964 select SYS_SUPPORTS_BIG_ENDIAN
971 select DMA_NONCOHERENT
972 select SYS_HAS_CPU_MIPS32_R2
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_LITTLE_ENDIAN
975 select SYS_SUPPORTS_BIG_ENDIAN
977 select CPU_MIPSR2_IRQ_VI
989 select DMA_NONCOHERENT
991 select SYS_HAS_CPU_MIPS32_R1
992 select SYS_HAS_EARLY_PRINTK
993 select SYS_SUPPORTS_32BIT_KERNEL
1002 config SGI_HAS_INDYDOG
1014 config SGI_HAS_ZILOG
1017 config SGI_HAS_I8042
1020 config DEFAULT_SGI_PARTITION
1032 config MIPS_L1_CACHE_SHIFT
1034 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1035 default "6" if MIPS_CPU_SCACHE
1036 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1039 config HAVE_STD_PC_SERIAL_PORT
1043 bool "ARC console support"
1044 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1048 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1053 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1062 menu "CPU selection"
1068 config CPU_LOONGSON2E
1070 depends on SYS_HAS_CPU_LOONGSON2E
1071 select CPU_LOONGSON2
1073 The Loongson 2E processor implements the MIPS III instruction set
1074 with many extensions.
1076 config CPU_MIPS32_R1
1077 bool "MIPS32 Release 1"
1078 depends on SYS_HAS_CPU_MIPS32_R1
1079 select CPU_HAS_PREFETCH
1080 select CPU_SUPPORTS_32BIT_KERNEL
1081 select CPU_SUPPORTS_HIGHMEM
1083 Choose this option to build a kernel for release 1 or later of the
1084 MIPS32 architecture. Most modern embedded systems with a 32-bit
1085 MIPS processor are based on a MIPS32 processor. If you know the
1086 specific type of processor in your system, choose those that one
1087 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1088 Release 2 of the MIPS32 architecture is available since several
1089 years so chances are you even have a MIPS32 Release 2 processor
1090 in which case you should choose CPU_MIPS32_R2 instead for better
1093 config CPU_MIPS32_R2
1094 bool "MIPS32 Release 2"
1095 depends on SYS_HAS_CPU_MIPS32_R2
1096 select CPU_HAS_PREFETCH
1097 select CPU_SUPPORTS_32BIT_KERNEL
1098 select CPU_SUPPORTS_HIGHMEM
1100 Choose this option to build a kernel for release 2 or later of the
1101 MIPS32 architecture. Most modern embedded systems with a 32-bit
1102 MIPS processor are based on a MIPS32 processor. If you know the
1103 specific type of processor in your system, choose those that one
1104 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1106 config CPU_MIPS64_R1
1107 bool "MIPS64 Release 1"
1108 depends on SYS_HAS_CPU_MIPS64_R1
1109 select CPU_HAS_PREFETCH
1110 select CPU_SUPPORTS_32BIT_KERNEL
1111 select CPU_SUPPORTS_64BIT_KERNEL
1112 select CPU_SUPPORTS_HIGHMEM
1113 select CPU_SUPPORTS_HUGEPAGES
1115 Choose this option to build a kernel for release 1 or later of the
1116 MIPS64 architecture. Many modern embedded systems with a 64-bit
1117 MIPS processor are based on a MIPS64 processor. If you know the
1118 specific type of processor in your system, choose those that one
1119 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1120 Release 2 of the MIPS64 architecture is available since several
1121 years so chances are you even have a MIPS64 Release 2 processor
1122 in which case you should choose CPU_MIPS64_R2 instead for better
1125 config CPU_MIPS64_R2
1126 bool "MIPS64 Release 2"
1127 depends on SYS_HAS_CPU_MIPS64_R2
1128 select CPU_HAS_PREFETCH
1129 select CPU_SUPPORTS_32BIT_KERNEL
1130 select CPU_SUPPORTS_64BIT_KERNEL
1131 select CPU_SUPPORTS_HIGHMEM
1132 select CPU_SUPPORTS_HUGEPAGES
1134 Choose this option to build a kernel for release 2 or later of the
1135 MIPS64 architecture. Many modern embedded systems with a 64-bit
1136 MIPS processor are based on a MIPS64 processor. If you know the
1137 specific type of processor in your system, choose those that one
1138 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1142 depends on SYS_HAS_CPU_R3000
1144 select CPU_SUPPORTS_32BIT_KERNEL
1145 select CPU_SUPPORTS_HIGHMEM
1147 Please make sure to pick the right CPU type. Linux/MIPS is not
1148 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1149 *not* work on R4000 machines and vice versa. However, since most
1150 of the supported machines have an R4000 (or similar) CPU, R4x00
1151 might be a safe bet. If the resulting kernel does not work,
1152 try to recompile with R3000.
1156 depends on SYS_HAS_CPU_TX39XX
1157 select CPU_SUPPORTS_32BIT_KERNEL
1161 depends on SYS_HAS_CPU_VR41XX
1162 select CPU_SUPPORTS_32BIT_KERNEL
1163 select CPU_SUPPORTS_64BIT_KERNEL
1165 The options selects support for the NEC VR4100 series of processors.
1166 Only choose this option if you have one of these processors as a
1167 kernel built with this option will not run on any other type of
1168 processor or vice versa.
1172 depends on SYS_HAS_CPU_R4300
1173 select CPU_SUPPORTS_32BIT_KERNEL
1174 select CPU_SUPPORTS_64BIT_KERNEL
1176 MIPS Technologies R4300-series processors.
1180 depends on SYS_HAS_CPU_R4X00
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1184 MIPS Technologies R4000-series processors other than 4300, including
1185 the R4000, R4400, R4600, and 4700.
1189 depends on SYS_HAS_CPU_TX49XX
1190 select CPU_HAS_PREFETCH
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_64BIT_KERNEL
1196 depends on SYS_HAS_CPU_R5000
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_64BIT_KERNEL
1200 MIPS Technologies R5000-series processors other than the Nevada.
1204 depends on SYS_HAS_CPU_R5432
1205 select CPU_SUPPORTS_32BIT_KERNEL
1206 select CPU_SUPPORTS_64BIT_KERNEL
1210 depends on SYS_HAS_CPU_R5500
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_64BIT_KERNEL
1213 select CPU_SUPPORTS_HUGEPAGES
1215 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1220 depends on EXPERIMENTAL
1221 depends on SYS_HAS_CPU_R6000
1222 select CPU_SUPPORTS_32BIT_KERNEL
1224 MIPS Technologies R6000 and R6000A series processors. Note these
1225 processors are extremely rare and the support for them is incomplete.
1229 depends on SYS_HAS_CPU_NEVADA
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1233 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1237 depends on EXPERIMENTAL
1238 depends on SYS_HAS_CPU_R8000
1239 select CPU_HAS_PREFETCH
1240 select CPU_SUPPORTS_64BIT_KERNEL
1242 MIPS Technologies R8000 processors. Note these processors are
1243 uncommon and the support for them is incomplete.
1247 depends on SYS_HAS_CPU_R10000
1248 select CPU_HAS_PREFETCH
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1251 select CPU_SUPPORTS_HIGHMEM
1253 MIPS Technologies R10000-series processors.
1257 depends on SYS_HAS_CPU_RM7000
1258 select CPU_HAS_PREFETCH
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_64BIT_KERNEL
1261 select CPU_SUPPORTS_HIGHMEM
1265 depends on SYS_HAS_CPU_RM9000
1266 select CPU_HAS_PREFETCH
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1269 select CPU_SUPPORTS_HIGHMEM
1270 select WEAK_ORDERING
1274 depends on SYS_HAS_CPU_SB1
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1277 select CPU_SUPPORTS_HIGHMEM
1278 select WEAK_ORDERING
1280 config CPU_CAVIUM_OCTEON
1281 bool "Cavium Octeon processor"
1282 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1284 select IRQ_CPU_OCTEON
1285 select CPU_HAS_PREFETCH
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select SYS_SUPPORTS_SMP
1288 select NR_CPUS_DEFAULT_16
1289 select WEAK_ORDERING
1290 select WEAK_REORDERING_BEYOND_LLSC
1291 select CPU_SUPPORTS_HIGHMEM
1292 select CPU_SUPPORTS_HUGEPAGES
1294 The Cavium Octeon processor is a highly integrated chip containing
1295 many ethernet hardware widgets for networking tasks. The processor
1296 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1297 Full details can be found at http://www.caviumnetworks.com.
1301 config SYS_SUPPORTS_ZBOOT
1303 select HAVE_KERNEL_GZIP
1304 select HAVE_KERNEL_BZIP2
1305 select HAVE_KERNEL_LZMA
1307 config SYS_SUPPORTS_ZBOOT_UART16550
1309 select SYS_SUPPORTS_ZBOOT
1311 config CPU_LOONGSON2
1313 select CPU_SUPPORTS_32BIT_KERNEL
1314 select CPU_SUPPORTS_64BIT_KERNEL
1315 select CPU_SUPPORTS_HIGHMEM
1317 config SYS_HAS_CPU_LOONGSON2E
1320 config SYS_HAS_CPU_MIPS32_R1
1323 config SYS_HAS_CPU_MIPS32_R2
1326 config SYS_HAS_CPU_MIPS64_R1
1329 config SYS_HAS_CPU_MIPS64_R2
1332 config SYS_HAS_CPU_R3000
1335 config SYS_HAS_CPU_TX39XX
1338 config SYS_HAS_CPU_VR41XX
1341 config SYS_HAS_CPU_R4300
1344 config SYS_HAS_CPU_R4X00
1347 config SYS_HAS_CPU_TX49XX
1350 config SYS_HAS_CPU_R5000
1353 config SYS_HAS_CPU_R5432
1356 config SYS_HAS_CPU_R5500
1359 config SYS_HAS_CPU_R6000
1362 config SYS_HAS_CPU_NEVADA
1365 config SYS_HAS_CPU_R8000
1368 config SYS_HAS_CPU_R10000
1371 config SYS_HAS_CPU_RM7000
1374 config SYS_HAS_CPU_RM9000
1377 config SYS_HAS_CPU_SB1
1380 config SYS_HAS_CPU_CAVIUM_OCTEON
1384 # CPU may reorder R->R, R->W, W->R, W->W
1385 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1387 config WEAK_ORDERING
1391 # CPU may reorder reads and writes beyond LL/SC
1392 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1394 config WEAK_REORDERING_BEYOND_LLSC
1399 # These two indicate any level of the MIPS32 and MIPS64 architecture
1403 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1407 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1410 # These two indicate the revision of the architecture, either Release 1 or Release 2
1414 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1418 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1420 config SYS_SUPPORTS_32BIT_KERNEL
1422 config SYS_SUPPORTS_64BIT_KERNEL
1424 config CPU_SUPPORTS_32BIT_KERNEL
1426 config CPU_SUPPORTS_64BIT_KERNEL
1428 config CPU_SUPPORTS_HUGEPAGES
1430 config MIPS_PGD_C0_CONTEXT
1432 default y if 64BIT && CPU_MIPSR2
1435 # Set to y for ptrace access to watch registers.
1437 config HARDWARE_WATCHPOINTS
1439 default y if CPU_MIPSR1 || CPU_MIPSR2
1445 prompt "Kernel code model"
1447 You should only select this option if you have a workload that
1448 actually benefits from 64-bit processing or if your machine has
1449 large memory. You will only be presented a single option in this
1450 menu if your system does not support both 32-bit and 64-bit kernels.
1453 bool "32-bit kernel"
1454 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1457 Select this option if you want to build a 32-bit kernel.
1459 bool "64-bit kernel"
1460 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1461 select HAVE_SYSCALL_WRAPPERS
1463 Select this option if you want to build a 64-bit kernel.
1468 prompt "Kernel page size"
1469 default PAGE_SIZE_4KB
1471 config PAGE_SIZE_4KB
1473 depends on !CPU_LOONGSON2
1475 This option select the standard 4kB Linux page size. On some
1476 R3000-family processors this is the only available page size. Using
1477 4kB page size will minimize memory consumption and is therefore
1478 recommended for low memory systems.
1480 config PAGE_SIZE_8KB
1482 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1484 Using 8kB page size will result in higher performance kernel at
1485 the price of higher memory consumption. This option is available
1486 only on R8000 and cnMIPS processors. Note that you will need a
1487 suitable Linux distribution to support this.
1489 config PAGE_SIZE_16KB
1491 depends on !CPU_R3000 && !CPU_TX39XX
1493 Using 16kB page size will result in higher performance kernel at
1494 the price of higher memory consumption. This option is available on
1495 all non-R3000 family processors. Note that you will need a suitable
1496 Linux distribution to support this.
1498 config PAGE_SIZE_32KB
1500 depends on CPU_CAVIUM_OCTEON
1502 Using 32kB page size will result in higher performance kernel at
1503 the price of higher memory consumption. This option is available
1504 only on cnMIPS cores. Note that you will need a suitable Linux
1505 distribution to support this.
1507 config PAGE_SIZE_64KB
1509 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1511 Using 64kB page size will result in higher performance kernel at
1512 the price of higher memory consumption. This option is available on
1513 all non-R3000 family processor. Not that at the time of this
1514 writing this option is still high experimental.
1521 config IP22_CPU_SCACHE
1526 # Support for a MIPS32 / MIPS64 style S-caches
1528 config MIPS_CPU_SCACHE
1532 config R5000_CPU_SCACHE
1536 config RM7000_CPU_SCACHE
1540 config SIBYTE_DMA_PAGEOPS
1541 bool "Use DMA to clear/copy pages"
1544 Instead of using the CPU to zero and copy pages, use a Data Mover
1545 channel. These DMA channels are otherwise unused by the standard
1546 SiByte Linux port. Seems to give a small performance benefit.
1548 config CPU_HAS_PREFETCH
1552 prompt "MIPS MT options"
1554 config MIPS_MT_DISABLED
1555 bool "Disable multithreading support."
1557 Use this option if your workload can't take advantage of
1558 MIPS hardware multithreading support. On systems that don't have
1559 the option of an MT-enabled processor this option will be the only
1560 option in this menu.
1563 bool "Use 1 TC on each available VPE for SMP"
1564 depends on SYS_SUPPORTS_MULTITHREADING
1565 select CPU_MIPSR2_IRQ_VI
1566 select CPU_MIPSR2_IRQ_EI
1568 select NR_CPUS_DEFAULT_2
1570 select SYS_SUPPORTS_SCHED_SMT if SMP
1571 select SYS_SUPPORTS_SMP
1574 This is a kernel model which is also known a VSMP or lately
1575 has been marketesed into SMVP.
1578 bool "SMTC: Use all TCs on all VPEs for SMP"
1579 depends on CPU_MIPS32_R2
1580 #depends on CPU_MIPS64_R2 # once there is hardware ...
1581 depends on SYS_SUPPORTS_MULTITHREADING
1582 select CPU_MIPSR2_IRQ_VI
1583 select CPU_MIPSR2_IRQ_EI
1585 select NR_CPUS_DEFAULT_8
1587 select SYS_SUPPORTS_SMP
1590 This is a kernel model which is known a SMTC or lately has been
1591 marketesed into SMVP.
1599 bool "SMT (multithreading) scheduler support"
1600 depends on SYS_SUPPORTS_SCHED_SMT
1603 SMT scheduler support improves the CPU scheduler's decision making
1604 when dealing with MIPS MT enabled cores at a cost of slightly
1605 increased overhead in some places. If unsure say N here.
1607 config SYS_SUPPORTS_SCHED_SMT
1611 config SYS_SUPPORTS_MULTITHREADING
1614 config MIPS_MT_FPAFF
1615 bool "Dynamic FPU affinity for FP-intensive threads"
1617 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1619 config MIPS_VPE_LOADER
1620 bool "VPE loader support."
1621 depends on SYS_SUPPORTS_MULTITHREADING
1622 select CPU_MIPSR2_IRQ_VI
1623 select CPU_MIPSR2_IRQ_EI
1626 Includes a loader for loading an elf relocatable object
1627 onto another VPE and running it.
1629 config MIPS_MT_SMTC_IM_BACKSTOP
1630 bool "Use per-TC register bits as backstop for inhibited IM bits"
1631 depends on MIPS_MT_SMTC
1634 To support multiple TC microthreads acting as "CPUs" within
1635 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1636 during interrupt handling. To support legacy drivers and interrupt
1637 controller management code, SMTC has a "backstop" to track and
1638 if necessary restore the interrupt mask. This has some performance
1639 impact on interrupt service overhead.
1641 config MIPS_MT_SMTC_IRQAFF
1642 bool "Support IRQ affinity API"
1643 depends on MIPS_MT_SMTC
1646 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1647 for SMTC Linux kernel. Requires platform support, of which
1648 an example can be found in the MIPS kernel i8259 and Malta
1649 platform code. Adds some overhead to interrupt dispatch, and
1650 should be used only if you know what you are doing.
1652 config MIPS_VPE_LOADER_TOM
1653 bool "Load VPE program into memory hidden from linux"
1654 depends on MIPS_VPE_LOADER
1657 The loader can use memory that is present but has been hidden from
1658 Linux using the kernel command line option "mem=xxMB". It's up to
1659 you to ensure the amount you put in the option and the space your
1660 program requires is less or equal to the amount physically present.
1662 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1663 config MIPS_VPE_APSP_API
1664 bool "Enable support for AP/SP API (RTLX)"
1665 depends on MIPS_VPE_LOADER
1668 config MIPS_APSP_KSPD
1670 depends on MIPS_VPE_APSP_API
1673 KSPD is a kernel daemon that accepts syscall requests from the SP
1674 side, actions them and returns the results. It also handles the
1675 "exit" syscall notifying other kernel modules the SP program is
1676 exiting. You probably want to say yes here.
1679 bool "MIPS CMP framework support"
1680 depends on SYS_SUPPORTS_MIPS_CMP
1682 select SYS_SUPPORTS_SMP
1683 select SYS_SUPPORTS_SCHED_SMT if SMP
1684 select WEAK_ORDERING
1687 This is a placeholder option for the GCMP work. It will need to
1688 be handled differently...
1690 config SB1_PASS_1_WORKAROUNDS
1692 depends on CPU_SB1_PASS_1
1695 config SB1_PASS_2_WORKAROUNDS
1697 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1700 config SB1_PASS_2_1_WORKAROUNDS
1702 depends on CPU_SB1 && CPU_SB1_PASS_2
1705 config 64BIT_PHYS_ADDR
1708 config CPU_HAS_SMARTMIPS
1709 depends on SYS_SUPPORTS_SMARTMIPS
1710 bool "Support for the SmartMIPS ASE"
1712 SmartMIPS is a extension of the MIPS32 architecture aimed at
1713 increased security at both hardware and software level for
1714 smartcards. Enabling this option will allow proper use of the
1715 SmartMIPS instructions by Linux applications. However a kernel with
1716 this option will not work on a MIPS core without SmartMIPS core. If
1717 you don't know you probably don't have SmartMIPS and should say N
1724 # Vectored interrupt mode is an R2 feature
1726 config CPU_MIPSR2_IRQ_VI
1730 # Extended interrupt mode is an R2 feature
1732 config CPU_MIPSR2_IRQ_EI
1737 depends on !CPU_R3000
1740 config GENERIC_CLOCKEVENTS_BROADCAST
1746 config CPU_DADDI_WORKAROUNDS
1749 config CPU_R4000_WORKAROUNDS
1751 select CPU_R4400_WORKAROUNDS
1753 config CPU_R4400_WORKAROUNDS
1757 # Use the generic interrupt handling code in kernel/irq/:
1759 config GENERIC_HARDIRQS
1763 config GENERIC_IRQ_PROBE
1771 # - Highmem only makes sense for the 32-bit kernel.
1772 # - The current highmem code will only work properly on physically indexed
1773 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1774 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1775 # moment we protect the user and offer the highmem option only on machines
1776 # where it's known to be safe. This will not offer highmem on a few systems
1777 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1778 # indexed CPUs but we're playing safe.
1779 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1780 # know they might have memory configurations that could make use of highmem
1784 bool "High Memory Support"
1785 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1787 config CPU_SUPPORTS_HIGHMEM
1790 config SYS_SUPPORTS_HIGHMEM
1793 config SYS_SUPPORTS_SMARTMIPS
1796 config ARCH_FLATMEM_ENABLE
1798 depends on !NUMA && !CPU_LOONGSON2
1800 config ARCH_DISCONTIGMEM_ENABLE
1802 default y if SGI_IP27
1804 Say Y to support efficient handling of discontiguous physical memory,
1805 for architectures which are either NUMA (Non-Uniform Memory Access)
1806 or have huge holes in the physical address space for other reasons.
1807 See <file:Documentation/vm/numa> for more.
1809 config ARCH_POPULATES_NODE_MAP
1812 config ARCH_SPARSEMEM_ENABLE
1814 select SPARSEMEM_STATIC
1818 depends on SYS_SUPPORTS_NUMA
1820 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1821 Access). This option improves performance on systems with more
1822 than two nodes; on two node systems it is generally better to
1823 leave it disabled; on single node systems disable this option
1826 config SYS_SUPPORTS_NUMA
1832 depends on NEED_MULTIPLE_NODES
1837 bool "Multi-Processing support"
1838 depends on SYS_SUPPORTS_SMP
1840 select USE_GENERIC_SMP_HELPERS
1842 This enables support for systems with more than one CPU. If you have
1843 a system with only one CPU, like most personal computers, say N. If
1844 you have a system with more than one CPU, say Y.
1846 If you say N here, the kernel will run on single and multiprocessor
1847 machines, but will use only one CPU of a multiprocessor machine. If
1848 you say Y here, the kernel will run on many, but not all,
1849 singleprocessor machines. On a singleprocessor machine, the kernel
1850 will run faster if you say N here.
1852 People using multiprocessor machines who say Y here should also say
1853 Y to "Enhanced Real Time Clock Support", below.
1855 See also the SMP-HOWTO available at
1856 <http://www.tldp.org/docs.html#howto>.
1858 If you don't know what to do here, say N.
1863 config SYS_SUPPORTS_MIPS_CMP
1866 config SYS_SUPPORTS_SMP
1869 config NR_CPUS_DEFAULT_1
1872 config NR_CPUS_DEFAULT_2
1875 config NR_CPUS_DEFAULT_4
1878 config NR_CPUS_DEFAULT_8
1881 config NR_CPUS_DEFAULT_16
1884 config NR_CPUS_DEFAULT_32
1887 config NR_CPUS_DEFAULT_64
1891 int "Maximum number of CPUs (2-64)"
1892 range 1 64 if NR_CPUS_DEFAULT_1
1894 default "1" if NR_CPUS_DEFAULT_1
1895 default "2" if NR_CPUS_DEFAULT_2
1896 default "4" if NR_CPUS_DEFAULT_4
1897 default "8" if NR_CPUS_DEFAULT_8
1898 default "16" if NR_CPUS_DEFAULT_16
1899 default "32" if NR_CPUS_DEFAULT_32
1900 default "64" if NR_CPUS_DEFAULT_64
1902 This allows you to specify the maximum number of CPUs which this
1903 kernel will support. The maximum supported value is 32 for 32-bit
1904 kernel and 64 for 64-bit kernels; the minimum value which makes
1905 sense is 1 for Qemu (useful only for kernel debugging purposes)
1906 and 2 for all others.
1908 This is purely to save memory - each supported CPU adds
1909 approximately eight kilobytes to the kernel image. For best
1910 performance should round up your number of processors to the next
1913 source "kernel/time/Kconfig"
1916 # Timer Interrupt Frequency Configuration
1920 prompt "Timer frequency"
1923 Allows the configuration of the timer frequency.
1926 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1929 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1932 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1935 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1938 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1941 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1944 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1948 config SYS_SUPPORTS_48HZ
1951 config SYS_SUPPORTS_100HZ
1954 config SYS_SUPPORTS_128HZ
1957 config SYS_SUPPORTS_250HZ
1960 config SYS_SUPPORTS_256HZ
1963 config SYS_SUPPORTS_1000HZ
1966 config SYS_SUPPORTS_1024HZ
1969 config SYS_SUPPORTS_ARBIT_HZ
1971 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1972 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1973 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1974 !SYS_SUPPORTS_1024HZ
1979 default 100 if HZ_100
1980 default 128 if HZ_128
1981 default 250 if HZ_250
1982 default 256 if HZ_256
1983 default 1000 if HZ_1000
1984 default 1024 if HZ_1024
1986 source "kernel/Kconfig.preempt"
1988 config MIPS_INSANE_LARGE
1989 bool "Support for large 64-bit configurations"
1990 depends on CPU_R10000 && 64BIT
1992 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1993 previous 64-bit processors which only supported 40 bit / 1TB. If you
1994 need processes of more than 1TB virtual address space, say Y here.
1995 This will result in additional memory usage, so it is not
1996 recommended for normal users.
1999 bool "Kexec system call (EXPERIMENTAL)"
2000 depends on EXPERIMENTAL
2002 kexec is a system call that implements the ability to shutdown your
2003 current kernel, and to start another kernel. It is like a reboot
2004 but it is independent of the system firmware. And like a reboot
2005 you can start any kernel with it, not just Linux.
2007 The name comes from the similarity to the exec system call.
2009 It is an ongoing process to be certain the hardware in a machine
2010 is properly shutdown, so do not be surprised if this code does not
2011 initially work for you. It may help to enable device hotplugging
2012 support. As of this writing the exact hardware interface is
2013 strongly in flux, so no good recommendation can be made.
2016 bool "Enable seccomp to safely compute untrusted bytecode"
2020 This kernel feature is useful for number crunching applications
2021 that may need to compute untrusted bytecode during their
2022 execution. By using pipes or other transports made available to
2023 the process as file descriptors supporting the read/write
2024 syscalls, it's possible to isolate those applications in
2025 their own address space using seccomp. Once seccomp is
2026 enabled via /proc/<pid>/seccomp, it cannot be disabled
2027 and the task is only allowed to execute a few safe syscalls
2028 defined by each seccomp mode.
2030 If unsure, say Y. Only embedded should say N here.
2034 config LOCKDEP_SUPPORT
2038 config STACKTRACE_SUPPORT
2042 source "init/Kconfig"
2044 config PROBE_INITRD_HEADER
2045 bool "Probe initrd header created by addinitrd"
2046 depends on BLK_DEV_INITRD
2048 Probe initrd header at the last page of kernel image.
2049 Say Y here if you are using arch/mips/boot/addinitrd.c to
2050 add initrd or initramfs image to the kernel image.
2053 source "kernel/Kconfig.freezer"
2055 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2063 bool "Support for PCI controller"
2064 depends on HW_HAS_PCI
2067 Find out whether you have a PCI motherboard. PCI is the name of a
2068 bus system, i.e. the way the CPU talks to the other stuff inside
2069 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2075 source "drivers/pci/Kconfig"
2078 # ISA support is now enabled via select. Too many systems still have the one
2079 # or other ISA chip on the board that users don't know about so don't expect
2080 # users to choose the right thing ...
2087 depends on HW_HAS_EISA
2089 select GENERIC_ISA_DMA
2091 The Extended Industry Standard Architecture (EISA) bus was
2092 developed as an open alternative to the IBM MicroChannel bus.
2094 The EISA bus provided some of the features of the IBM MicroChannel
2095 bus while maintaining backward compatibility with cards made for
2096 the older ISA bus. The EISA bus saw limited use between 1988 and
2097 1995 when it was made obsolete by the PCI bus.
2099 Say Y here if you are building a kernel for an EISA-based machine.
2103 source "drivers/eisa/Kconfig"
2106 bool "TURBOchannel support"
2107 depends on MACH_DECSTATION
2109 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2110 processors. Documentation on writing device drivers for TurboChannel
2112 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2115 # bool "Access.Bus support"
2128 source "drivers/pcmcia/Kconfig"
2130 source "drivers/pci/hotplug/Kconfig"
2134 menu "Executable file formats"
2136 source "fs/Kconfig.binfmt"
2141 config MIPS32_COMPAT
2142 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2145 Select this option if you want Linux/MIPS 32-bit binary
2146 compatibility. Since all software available for Linux/MIPS is
2147 currently 32-bit you should say Y here.
2151 depends on MIPS32_COMPAT
2154 config SYSVIPC_COMPAT
2156 depends on COMPAT && SYSVIPC
2160 bool "Kernel support for o32 binaries"
2161 depends on MIPS32_COMPAT
2163 Select this option if you want to run o32 binaries. These are pure
2164 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2165 existing binaries are in this format.
2170 bool "Kernel support for n32 binaries"
2171 depends on MIPS32_COMPAT
2173 Select this option if you want to run n32 binaries. These are
2174 64-bit binaries using 32-bit quantities for addressing and certain
2175 data that would normally be 64-bit. They are used in special
2182 default y if MIPS32_O32 || MIPS32_N32
2186 menu "Power management options"
2188 config ARCH_HIBERNATION_POSSIBLE
2190 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2192 config ARCH_SUSPEND_POSSIBLE
2194 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2196 source "kernel/power/Kconfig"
2200 source "net/Kconfig"
2202 source "drivers/Kconfig"
2206 source "arch/mips/Kconfig.debug"
2208 source "security/Kconfig"
2210 source "crypto/Kconfig"
2212 source "lib/Kconfig"