4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
10 select HAVE_DYNAMIC_FTRACE
11 select HAVE_FTRACE_MCOUNT_RECORD
12 select HAVE_FUNCTION_GRAPH_TRACER
13 select RTC_LIB if !MACH_LOONGSON
15 mainmenu "Linux/MIPS Kernel Configuration"
17 menu "Machine selection"
27 bool "Alchemy processor based machines"
28 select SYS_SUPPORTS_ZBOOT
31 bool "Texas Instruments AR7"
33 select DMA_NONCOHERENT
39 select SYS_HAS_CPU_MIPS32_R1
40 select SYS_HAS_EARLY_PRINTK
41 select SYS_SUPPORTS_32BIT_KERNEL
42 select SYS_SUPPORTS_LITTLE_ENDIAN
43 select SYS_SUPPORTS_ZBOOT_UART16550
48 Support for the Texas Instruments AR7 System-on-a-Chip
49 family: TNETD7100, 7200 and 7300.
52 bool "BCM47XX based boards"
55 select DMA_NONCOHERENT
58 select SYS_HAS_CPU_MIPS32_R1
59 select SYS_SUPPORTS_32BIT_KERNEL
60 select SYS_SUPPORTS_LITTLE_ENDIAN
62 select SSB_DRIVER_MIPS
63 select SSB_DRIVER_EXTIF
65 select SSB_PCICORE_HOSTMODE if PCI
67 select SYS_HAS_EARLY_PRINTK
70 Support for BCM47XX based boards
73 bool "Broadcom BCM63XX based boards"
76 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_BIG_ENDIAN
81 select SYS_HAS_EARLY_PRINTK
83 select ARCH_REQUIRE_GPIOLIB
85 Support for BCM63XX based boards
92 select DMA_NONCOHERENT
98 select PCI_GT64XXX_PCI0
100 select SYS_HAS_CPU_NEVADA
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_64BIT_KERNEL
104 select SYS_SUPPORTS_LITTLE_ENDIAN
106 config MACH_DECSTATION
113 select CPU_DADDI_WORKAROUNDS if 64BIT
114 select CPU_R4000_WORKAROUNDS if 64BIT
115 select CPU_R4400_WORKAROUNDS if 64BIT
116 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_R3000
120 select SYS_HAS_CPU_R4X00
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
123 select SYS_SUPPORTS_LITTLE_ENDIAN
124 select SYS_SUPPORTS_128HZ
125 select SYS_SUPPORTS_256HZ
126 select SYS_SUPPORTS_1024HZ
128 This enables support for DEC's MIPS based workstations. For details
129 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
130 DECstation porting pages on <http://decstation.unix-ag.org/>.
132 If you have one of the following DECstation Models you definitely
133 want to choose R4xx0 for the CPU Type:
140 otherwise choose R3000.
143 bool "Jazz family of machines"
146 select ARCH_MAY_HAVE_PC_FDC
149 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
150 select GENERIC_ISA_DMA
155 select SYS_HAS_CPU_R4X00
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
158 select SYS_SUPPORTS_100HZ
160 This a family of machines based on the MIPS R4030 chipset which was
161 used by several vendors to build RISC/os and Windows NT workstations.
162 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
163 Olivetti M700-10 workstations.
166 bool "LASAT Networks platforms"
169 select DMA_NONCOHERENT
170 select SYS_HAS_EARLY_PRINTK
173 select PCI_GT64XXX_PCI0
175 select R5000_CPU_SCACHE
176 select SYS_HAS_CPU_R5000
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
179 select SYS_SUPPORTS_LITTLE_ENDIAN
182 bool "Loongson family of machines"
183 select SYS_SUPPORTS_ZBOOT_UART16550
185 This enables the support of Loongson family of machines.
187 Loongson is a family of general-purpose MIPS-compatible CPUs.
188 developed at Institute of Computing Technology (ICT),
189 Chinese Academy of Sciences (CAS) in the People's Republic
190 of China. The chief architect is Professor Weiwu Hu.
193 bool "MIPS Malta board"
194 select ARCH_MAY_HAVE_PC_FDC
199 select DMA_NONCOHERENT
200 select GENERIC_ISA_DMA
206 select MIPS_BOARDS_GEN
208 select MIPS_CPU_SCACHE
209 select PCI_GT64XXX_PCI0
212 select SYS_HAS_CPU_MIPS32_R1
213 select SYS_HAS_CPU_MIPS32_R2
214 select SYS_HAS_CPU_MIPS64_R1
215 select SYS_HAS_CPU_NEVADA
216 select SYS_HAS_CPU_RM7000
217 select SYS_HAS_EARLY_PRINTK
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_64BIT_KERNEL
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_LITTLE_ENDIAN
222 select SYS_SUPPORTS_MIPS_CMP
223 select SYS_SUPPORTS_MULTITHREADING
224 select SYS_SUPPORTS_SMARTMIPS
225 select SYS_SUPPORTS_ZBOOT
227 This enables support for the MIPS Technologies Malta evaluation
231 bool 'MIPS simulator (MIPSsim)'
234 select DMA_NONCOHERENT
235 select SYS_HAS_EARLY_PRINTK
238 select SYS_HAS_CPU_MIPS32_R1
239 select SYS_HAS_CPU_MIPS32_R2
240 select SYS_HAS_EARLY_PRINTK
241 select SYS_SUPPORTS_32BIT_KERNEL
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_MULTITHREADING
244 select SYS_SUPPORTS_LITTLE_ENDIAN
246 This option enables support for MIPS Technologies MIPSsim software
250 bool "NEC EMMA2RH Mark-eins board"
254 This enables support for the NEC Electronics Mark-eins boards.
257 bool "NEC VR4100 series based machines"
260 select SYS_HAS_CPU_VR41XX
261 select ARCH_REQUIRE_GPIOLIB
264 bool "NXP STB220 board"
267 Support for NXP Semiconductors STB220 Development Board.
274 Support for NXP Semiconductors STB225 Development Board.
277 bool "NXP PNX8550 based JBS board"
279 select SYS_SUPPORTS_LITTLE_ENDIAN
281 config PNX8550_STB810
282 bool "NXP PNX8550 based STB810 board"
284 select SYS_SUPPORTS_LITTLE_ENDIAN
287 bool "PMC-Sierra MSP chipsets"
288 depends on EXPERIMENTAL
289 select DMA_NONCOHERENT
291 select NO_EXCEPT_FILL
293 select SYS_HAS_CPU_MIPS32_R1
294 select SYS_HAS_CPU_MIPS32_R2
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
299 select SERIAL_8250_CONSOLE
301 This adds support for the PMC-Sierra family of Multi-Service
302 Processor System-On-A-Chips. These parts include a number
303 of integrated peripherals, interfaces and DSPs in addition to
304 a variety of MIPS cores.
307 bool "PMC-Sierra Yosemite eval board"
316 select SYS_HAS_CPU_RM9000
317 select SYS_HAS_EARLY_PRINTK
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_HIGHMEM
322 select SYS_SUPPORTS_SMP
324 Yosemite is an evaluation board for the RM9000x2 processor
325 manufactured by PMC-Sierra.
331 select CPU_MIPSR2_IRQ_VI
332 select CPU_MIPSR2_IRQ_EI
334 select DMA_NONCOHERENT
336 select SYS_HAS_EARLY_PRINTK
337 select SYS_HAS_CPU_MIPS32_R2
338 select SYS_SUPPORTS_32BIT_KERNEL
339 select SYS_SUPPORTS_BIG_ENDIAN
340 select SYS_SUPPORTS_HIGHMEM
341 select USB_OHCI_LITTLE_ENDIAN
343 This enables support for the Cisco PowerTV Platform.
346 bool "SGI IP22 (Indy/Indigo2)"
352 select DEFAULT_SGI_PARTITION
353 select DMA_NONCOHERENT
357 select IP22_CPU_SCACHE
359 select GENERIC_ISA_DMA_SUPPORT_BROKEN
361 select SGI_HAS_INDYDOG
367 select SYS_HAS_CPU_R4X00
368 select SYS_HAS_CPU_R5000
370 # Disable EARLY_PRINTK for now since it leads to overwritten prom
371 # memory during early boot on some machines.
373 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
374 # for a more details discussion
376 # select SYS_HAS_EARLY_PRINTK
377 select SYS_SUPPORTS_32BIT_KERNEL
378 select SYS_SUPPORTS_64BIT_KERNEL
379 select SYS_SUPPORTS_BIG_ENDIAN
381 This are the SGI Indy, Challenge S and Indigo2, as well as certain
382 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
383 that runs on these, say Y here.
386 bool "SGI IP27 (Origin200/2000)"
390 select DEFAULT_SGI_PARTITION
392 select SYS_HAS_EARLY_PRINTK
394 select NR_CPUS_DEFAULT_64
395 select SYS_HAS_CPU_R10000
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
398 select SYS_SUPPORTS_NUMA
399 select SYS_SUPPORTS_SMP
401 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
402 workstations. To compile a Linux kernel that runs on these, say Y
406 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
407 depends on EXPERIMENTAL
413 select DEFAULT_SGI_PARTITION
414 select DMA_NONCOHERENT
415 select GENERIC_ISA_DMA_SUPPORT_BROKEN
421 select SGI_HAS_INDYDOG
427 select SYS_HAS_CPU_R10000
429 # Disable EARLY_PRINTK for now since it leads to overwritten prom
430 # memory during early boot on some machines.
432 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
433 # for a more details discussion
435 # select SYS_HAS_EARLY_PRINTK
436 select SYS_SUPPORTS_64BIT_KERNEL
437 select SYS_SUPPORTS_BIG_ENDIAN
439 This is the SGI Indigo2 with R10000 processor. To compile a Linux
440 kernel that runs on these, say Y here.
449 select DMA_NONCOHERENT
452 select R5000_CPU_SCACHE
453 select RM7000_CPU_SCACHE
454 select SYS_HAS_CPU_R5000
455 select SYS_HAS_CPU_R10000 if BROKEN
456 select SYS_HAS_CPU_RM7000
457 select SYS_HAS_CPU_NEVADA
458 select SYS_SUPPORTS_64BIT_KERNEL
459 select SYS_SUPPORTS_BIG_ENDIAN
461 If you want this kernel to run on SGI O2 workstation, say Y here.
464 bool "Sibyte BCM91120C-CRhine"
465 depends on EXPERIMENTAL
468 select SIBYTE_BCM1120
470 select SYS_HAS_CPU_SB1
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_LITTLE_ENDIAN
475 bool "Sibyte BCM91120x-Carmel"
476 depends on EXPERIMENTAL
479 select SIBYTE_BCM1120
481 select SYS_HAS_CPU_SB1
482 select SYS_SUPPORTS_BIG_ENDIAN
483 select SYS_SUPPORTS_LITTLE_ENDIAN
486 bool "Sibyte BCM91125C-CRhone"
487 depends on EXPERIMENTAL
490 select SIBYTE_BCM1125
492 select SYS_HAS_CPU_SB1
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_HIGHMEM
495 select SYS_SUPPORTS_LITTLE_ENDIAN
498 bool "Sibyte BCM91125E-Rhone"
499 depends on EXPERIMENTAL
502 select SIBYTE_BCM1125H
504 select SYS_HAS_CPU_SB1
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_LITTLE_ENDIAN
509 bool "Sibyte BCM91250A-SWARM"
512 select NR_CPUS_DEFAULT_2
515 select SYS_HAS_CPU_SB1
516 select SYS_SUPPORTS_BIG_ENDIAN
517 select SYS_SUPPORTS_HIGHMEM
518 select SYS_SUPPORTS_LITTLE_ENDIAN
519 select ZONE_DMA32 if 64BIT
521 config SIBYTE_LITTLESUR
522 bool "Sibyte BCM91250C2-LittleSur"
523 depends on EXPERIMENTAL
526 select NR_CPUS_DEFAULT_2
529 select SYS_HAS_CPU_SB1
530 select SYS_SUPPORTS_BIG_ENDIAN
531 select SYS_SUPPORTS_HIGHMEM
532 select SYS_SUPPORTS_LITTLE_ENDIAN
534 config SIBYTE_SENTOSA
535 bool "Sibyte BCM91250E-Sentosa"
536 depends on EXPERIMENTAL
539 select NR_CPUS_DEFAULT_2
542 select SYS_HAS_CPU_SB1
543 select SYS_SUPPORTS_BIG_ENDIAN
544 select SYS_SUPPORTS_LITTLE_ENDIAN
547 bool "Sibyte BCM91480B-BigSur"
550 select NR_CPUS_DEFAULT_4
551 select SIBYTE_BCM1x80
553 select SYS_HAS_CPU_SB1
554 select SYS_SUPPORTS_BIG_ENDIAN
555 select SYS_SUPPORTS_HIGHMEM
556 select SYS_SUPPORTS_LITTLE_ENDIAN
557 select ZONE_DMA32 if 64BIT
560 bool "SNI RM200/300/400"
561 select ARC if CPU_LITTLE_ENDIAN
562 select ARC32 if CPU_LITTLE_ENDIAN
563 select SNIPROM if CPU_BIG_ENDIAN
564 select ARCH_MAY_HAVE_PC_FDC
568 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
569 select DMA_NONCOHERENT
570 select GENERIC_ISA_DMA
577 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
578 select SYS_HAS_CPU_R4X00
579 select SYS_HAS_CPU_R5000
580 select SYS_HAS_CPU_R10000
581 select R5000_CPU_SCACHE
582 select SYS_HAS_EARLY_PRINTK
583 select SYS_SUPPORTS_32BIT_KERNEL
584 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_HIGHMEM
587 select SYS_SUPPORTS_LITTLE_ENDIAN
589 The SNI RM200/300/400 are MIPS-based machines manufactured by
590 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
591 Technology and now in turn merged with Fujitsu. Say Y here to
592 support this machine type.
595 bool "Toshiba TX39 series based machines"
598 bool "Toshiba TX49 series based machines"
600 config MIKROTIK_RB532
601 bool "Mikrotik RB532 boards"
604 select DMA_NONCOHERENT
607 select SYS_HAS_CPU_MIPS32_R1
608 select SYS_SUPPORTS_32BIT_KERNEL
609 select SYS_SUPPORTS_LITTLE_ENDIAN
612 select ARCH_REQUIRE_GPIOLIB
614 Support the Mikrotik(tm) RouterBoard 532 series,
615 based on the IDT RC32434 SoC.
618 bool "Wind River PPMC board"
623 select DMA_NONCOHERENT
625 select PCI_GT64XXX_PCI0
627 select SYS_HAS_CPU_MIPS32_R1
628 select SYS_HAS_CPU_MIPS32_R2
629 select SYS_HAS_CPU_MIPS64_R1
630 select SYS_HAS_CPU_NEVADA
631 select SYS_HAS_CPU_RM7000
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_64BIT_KERNEL
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_LITTLE_ENDIAN
637 This enables support for the Wind River MIPS32 4KC PPMC evaluation
638 board, which is based on GT64120 bridge chip.
640 config CAVIUM_OCTEON_SIMULATOR
641 bool "Cavium Networks Octeon Simulator"
643 select 64BIT_PHYS_ADDR
645 select SYS_SUPPORTS_64BIT_KERNEL
646 select SYS_SUPPORTS_BIG_ENDIAN
647 select SYS_SUPPORTS_HIGHMEM
648 select SYS_SUPPORTS_HOTPLUG_CPU
649 select SYS_HAS_CPU_CAVIUM_OCTEON
651 The Octeon simulator is software performance model of the Cavium
652 Octeon Processor. It supports simulating Octeon processors on x86
655 config CAVIUM_OCTEON_REFERENCE_BOARD
656 bool "Cavium Networks Octeon reference board"
658 select 64BIT_PHYS_ADDR
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_HIGHMEM
663 select SYS_SUPPORTS_HOTPLUG_CPU
664 select SYS_HAS_EARLY_PRINTK
665 select SYS_HAS_CPU_CAVIUM_OCTEON
668 select ARCH_SUPPORTS_MSI
670 This option supports all of the Octeon reference boards from Cavium
671 Networks. It builds a kernel that dynamically determines the Octeon
672 CPU type and supports all known board reference implementations.
673 Some of the supported boards are:
680 Say Y here for most Octeon reference boards.
684 source "arch/mips/alchemy/Kconfig"
685 source "arch/mips/bcm63xx/Kconfig"
686 source "arch/mips/jazz/Kconfig"
687 source "arch/mips/lasat/Kconfig"
688 source "arch/mips/pmc-sierra/Kconfig"
689 source "arch/mips/powertv/Kconfig"
690 source "arch/mips/sgi-ip27/Kconfig"
691 source "arch/mips/sibyte/Kconfig"
692 source "arch/mips/txx9/Kconfig"
693 source "arch/mips/vr41xx/Kconfig"
694 source "arch/mips/cavium-octeon/Kconfig"
695 source "arch/mips/loongson/Kconfig"
699 config RWSEM_GENERIC_SPINLOCK
703 config RWSEM_XCHGADD_ALGORITHM
706 config ARCH_HAS_ILOG2_U32
710 config ARCH_HAS_ILOG2_U64
714 config ARCH_SUPPORTS_OPROFILE
716 default y if !MIPS_MT_SMTC
718 config GENERIC_FIND_NEXT_BIT
722 config GENERIC_HWEIGHT
726 config GENERIC_CALIBRATE_DELAY
730 config GENERIC_CLOCKEVENTS
738 config GENERIC_CMOS_UPDATE
742 config SCHED_OMIT_FRAME_POINTER
746 config GENERIC_HARDIRQS_NO__DO_IRQ
750 # Select some configuration options automatically based on user selections.
755 config ARCH_MAY_HAVE_PC_FDC
804 select ARCH_REQUIRE_GPIOLIB
813 config DMA_NONCOHERENT
815 select DMA_NEED_PCI_MAP_STATE
817 config DMA_NEED_PCI_MAP_STATE
820 config SYS_HAS_EARLY_PRINTK
824 bool "Support for hot-pluggable CPUs"
825 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
827 Say Y here to allow turning CPUs off and on. CPUs can be
828 controlled through /sys/devices/system/cpu.
829 (Note: power management support will enable this option
830 automatically on SMP systems. )
831 Say N if you want to disable CPU hotplug.
833 config SYS_SUPPORTS_HOTPLUG_CPU
848 config MIPS_DISABLE_OBSOLETE_IDE
857 config GENERIC_ISA_DMA
859 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
861 config GENERIC_ISA_DMA_SUPPORT_BROKEN
863 select GENERIC_ISA_DMA
869 # Endianess selection. Sufficiently obscure so many users don't know what to
870 # answer,so we try hard to limit the available choices. Also the use of a
871 # choice statement should be more obvious to the user.
874 prompt "Endianess selection"
876 Some MIPS machines can be configured for either little or big endian
877 byte order. These modes require different kernels and a different
878 Linux distribution. In general there is one preferred byteorder for a
879 particular system but some systems are just as commonly used in the
880 one or the other endianness.
882 config CPU_BIG_ENDIAN
884 depends on SYS_SUPPORTS_BIG_ENDIAN
886 config CPU_LITTLE_ENDIAN
888 depends on SYS_SUPPORTS_LITTLE_ENDIAN
893 config SYS_SUPPORTS_APM_EMULATION
896 config SYS_SUPPORTS_BIG_ENDIAN
899 config SYS_SUPPORTS_LITTLE_ENDIAN
902 config SYS_SUPPORTS_HUGETLBFS
904 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
931 config IRQ_CPU_OCTEON
934 config MIPS_BOARDS_GEN
937 config PCI_GT64XXX_PCI0
940 config NO_EXCEPT_FILL
951 select DMA_NONCOHERENT
954 select SYS_HAS_CPU_R5500
955 select SYS_SUPPORTS_32BIT_KERNEL
956 select SYS_SUPPORTS_64BIT_KERNEL
957 select SYS_SUPPORTS_BIG_ENDIAN
964 select DMA_NONCOHERENT
965 select SYS_HAS_CPU_MIPS32_R2
966 select SYS_SUPPORTS_32BIT_KERNEL
967 select SYS_SUPPORTS_LITTLE_ENDIAN
968 select SYS_SUPPORTS_BIG_ENDIAN
970 select CPU_MIPSR2_IRQ_VI
982 select DMA_NONCOHERENT
984 select SYS_HAS_CPU_MIPS32_R1
985 select SYS_HAS_EARLY_PRINTK
986 select SYS_SUPPORTS_32BIT_KERNEL
995 config SGI_HAS_INDYDOG
1007 config SGI_HAS_ZILOG
1010 config SGI_HAS_I8042
1013 config DEFAULT_SGI_PARTITION
1025 config MIPS_L1_CACHE_SHIFT
1027 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1028 default "6" if MIPS_CPU_SCACHE
1029 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1032 config HAVE_STD_PC_SERIAL_PORT
1036 bool "ARC console support"
1037 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1041 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1046 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1055 menu "CPU selection"
1061 config CPU_LOONGSON2E
1063 depends on SYS_HAS_CPU_LOONGSON2E
1064 select CPU_LOONGSON2
1066 The Loongson 2E processor implements the MIPS III instruction set
1067 with many extensions.
1069 It has an internal FPGA northbridge, which is compatiable to
1072 config CPU_LOONGSON2F
1074 depends on SYS_HAS_CPU_LOONGSON2F
1075 select CPU_LOONGSON2
1077 The Loongson 2F processor implements the MIPS III instruction set
1078 with many extensions.
1080 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1081 have a similar programming interface with FPGA northbridge used in
1084 config CPU_MIPS32_R1
1085 bool "MIPS32 Release 1"
1086 depends on SYS_HAS_CPU_MIPS32_R1
1087 select CPU_HAS_PREFETCH
1088 select CPU_SUPPORTS_32BIT_KERNEL
1089 select CPU_SUPPORTS_HIGHMEM
1091 Choose this option to build a kernel for release 1 or later of the
1092 MIPS32 architecture. Most modern embedded systems with a 32-bit
1093 MIPS processor are based on a MIPS32 processor. If you know the
1094 specific type of processor in your system, choose those that one
1095 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1096 Release 2 of the MIPS32 architecture is available since several
1097 years so chances are you even have a MIPS32 Release 2 processor
1098 in which case you should choose CPU_MIPS32_R2 instead for better
1101 config CPU_MIPS32_R2
1102 bool "MIPS32 Release 2"
1103 depends on SYS_HAS_CPU_MIPS32_R2
1104 select CPU_HAS_PREFETCH
1105 select CPU_SUPPORTS_32BIT_KERNEL
1106 select CPU_SUPPORTS_HIGHMEM
1108 Choose this option to build a kernel for release 2 or later of the
1109 MIPS32 architecture. Most modern embedded systems with a 32-bit
1110 MIPS processor are based on a MIPS32 processor. If you know the
1111 specific type of processor in your system, choose those that one
1112 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1114 config CPU_MIPS64_R1
1115 bool "MIPS64 Release 1"
1116 depends on SYS_HAS_CPU_MIPS64_R1
1117 select CPU_HAS_PREFETCH
1118 select CPU_SUPPORTS_32BIT_KERNEL
1119 select CPU_SUPPORTS_64BIT_KERNEL
1120 select CPU_SUPPORTS_HIGHMEM
1121 select CPU_SUPPORTS_HUGEPAGES
1123 Choose this option to build a kernel for release 1 or later of the
1124 MIPS64 architecture. Many modern embedded systems with a 64-bit
1125 MIPS processor are based on a MIPS64 processor. If you know the
1126 specific type of processor in your system, choose those that one
1127 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1128 Release 2 of the MIPS64 architecture is available since several
1129 years so chances are you even have a MIPS64 Release 2 processor
1130 in which case you should choose CPU_MIPS64_R2 instead for better
1133 config CPU_MIPS64_R2
1134 bool "MIPS64 Release 2"
1135 depends on SYS_HAS_CPU_MIPS64_R2
1136 select CPU_HAS_PREFETCH
1137 select CPU_SUPPORTS_32BIT_KERNEL
1138 select CPU_SUPPORTS_64BIT_KERNEL
1139 select CPU_SUPPORTS_HIGHMEM
1140 select CPU_SUPPORTS_HUGEPAGES
1142 Choose this option to build a kernel for release 2 or later of the
1143 MIPS64 architecture. Many modern embedded systems with a 64-bit
1144 MIPS processor are based on a MIPS64 processor. If you know the
1145 specific type of processor in your system, choose those that one
1146 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1150 depends on SYS_HAS_CPU_R3000
1152 select CPU_SUPPORTS_32BIT_KERNEL
1153 select CPU_SUPPORTS_HIGHMEM
1155 Please make sure to pick the right CPU type. Linux/MIPS is not
1156 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1157 *not* work on R4000 machines and vice versa. However, since most
1158 of the supported machines have an R4000 (or similar) CPU, R4x00
1159 might be a safe bet. If the resulting kernel does not work,
1160 try to recompile with R3000.
1164 depends on SYS_HAS_CPU_TX39XX
1165 select CPU_SUPPORTS_32BIT_KERNEL
1169 depends on SYS_HAS_CPU_VR41XX
1170 select CPU_SUPPORTS_32BIT_KERNEL
1171 select CPU_SUPPORTS_64BIT_KERNEL
1173 The options selects support for the NEC VR4100 series of processors.
1174 Only choose this option if you have one of these processors as a
1175 kernel built with this option will not run on any other type of
1176 processor or vice versa.
1180 depends on SYS_HAS_CPU_R4300
1181 select CPU_SUPPORTS_32BIT_KERNEL
1182 select CPU_SUPPORTS_64BIT_KERNEL
1184 MIPS Technologies R4300-series processors.
1188 depends on SYS_HAS_CPU_R4X00
1189 select CPU_SUPPORTS_32BIT_KERNEL
1190 select CPU_SUPPORTS_64BIT_KERNEL
1192 MIPS Technologies R4000-series processors other than 4300, including
1193 the R4000, R4400, R4600, and 4700.
1197 depends on SYS_HAS_CPU_TX49XX
1198 select CPU_HAS_PREFETCH
1199 select CPU_SUPPORTS_32BIT_KERNEL
1200 select CPU_SUPPORTS_64BIT_KERNEL
1204 depends on SYS_HAS_CPU_R5000
1205 select CPU_SUPPORTS_32BIT_KERNEL
1206 select CPU_SUPPORTS_64BIT_KERNEL
1208 MIPS Technologies R5000-series processors other than the Nevada.
1212 depends on SYS_HAS_CPU_R5432
1213 select CPU_SUPPORTS_32BIT_KERNEL
1214 select CPU_SUPPORTS_64BIT_KERNEL
1218 depends on SYS_HAS_CPU_R5500
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_64BIT_KERNEL
1221 select CPU_SUPPORTS_HUGEPAGES
1223 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1228 depends on EXPERIMENTAL
1229 depends on SYS_HAS_CPU_R6000
1230 select CPU_SUPPORTS_32BIT_KERNEL
1232 MIPS Technologies R6000 and R6000A series processors. Note these
1233 processors are extremely rare and the support for them is incomplete.
1237 depends on SYS_HAS_CPU_NEVADA
1238 select CPU_SUPPORTS_32BIT_KERNEL
1239 select CPU_SUPPORTS_64BIT_KERNEL
1241 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1245 depends on EXPERIMENTAL
1246 depends on SYS_HAS_CPU_R8000
1247 select CPU_HAS_PREFETCH
1248 select CPU_SUPPORTS_64BIT_KERNEL
1250 MIPS Technologies R8000 processors. Note these processors are
1251 uncommon and the support for them is incomplete.
1255 depends on SYS_HAS_CPU_R10000
1256 select CPU_HAS_PREFETCH
1257 select CPU_SUPPORTS_32BIT_KERNEL
1258 select CPU_SUPPORTS_64BIT_KERNEL
1259 select CPU_SUPPORTS_HIGHMEM
1261 MIPS Technologies R10000-series processors.
1265 depends on SYS_HAS_CPU_RM7000
1266 select CPU_HAS_PREFETCH
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1269 select CPU_SUPPORTS_HIGHMEM
1273 depends on SYS_HAS_CPU_RM9000
1274 select CPU_HAS_PREFETCH
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1277 select CPU_SUPPORTS_HIGHMEM
1278 select WEAK_ORDERING
1282 depends on SYS_HAS_CPU_SB1
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select CPU_SUPPORTS_HIGHMEM
1286 select WEAK_ORDERING
1288 config CPU_CAVIUM_OCTEON
1289 bool "Cavium Octeon processor"
1290 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1292 select IRQ_CPU_OCTEON
1293 select CPU_HAS_PREFETCH
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select SYS_SUPPORTS_SMP
1296 select NR_CPUS_DEFAULT_16
1297 select WEAK_ORDERING
1298 select WEAK_REORDERING_BEYOND_LLSC
1299 select CPU_SUPPORTS_HIGHMEM
1300 select CPU_SUPPORTS_HUGEPAGES
1302 The Cavium Octeon processor is a highly integrated chip containing
1303 many ethernet hardware widgets for networking tasks. The processor
1304 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1305 Full details can be found at http://www.caviumnetworks.com.
1309 config SYS_SUPPORTS_ZBOOT
1311 select HAVE_KERNEL_GZIP
1312 select HAVE_KERNEL_BZIP2
1313 select HAVE_KERNEL_LZMA
1314 select HAVE_KERNEL_LZO
1316 config SYS_SUPPORTS_ZBOOT_UART16550
1318 select SYS_SUPPORTS_ZBOOT
1320 config CPU_LOONGSON2
1322 select CPU_SUPPORTS_32BIT_KERNEL
1323 select CPU_SUPPORTS_64BIT_KERNEL
1324 select CPU_SUPPORTS_HIGHMEM
1326 config SYS_HAS_CPU_LOONGSON2E
1329 config SYS_HAS_CPU_LOONGSON2F
1331 select CPU_SUPPORTS_CPUFREQ
1332 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1333 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1335 config SYS_HAS_CPU_MIPS32_R1
1338 config SYS_HAS_CPU_MIPS32_R2
1341 config SYS_HAS_CPU_MIPS64_R1
1344 config SYS_HAS_CPU_MIPS64_R2
1347 config SYS_HAS_CPU_R3000
1350 config SYS_HAS_CPU_TX39XX
1353 config SYS_HAS_CPU_VR41XX
1356 config SYS_HAS_CPU_R4300
1359 config SYS_HAS_CPU_R4X00
1362 config SYS_HAS_CPU_TX49XX
1365 config SYS_HAS_CPU_R5000
1368 config SYS_HAS_CPU_R5432
1371 config SYS_HAS_CPU_R5500
1374 config SYS_HAS_CPU_R6000
1377 config SYS_HAS_CPU_NEVADA
1380 config SYS_HAS_CPU_R8000
1383 config SYS_HAS_CPU_R10000
1386 config SYS_HAS_CPU_RM7000
1389 config SYS_HAS_CPU_RM9000
1392 config SYS_HAS_CPU_SB1
1395 config SYS_HAS_CPU_CAVIUM_OCTEON
1399 # CPU may reorder R->R, R->W, W->R, W->W
1400 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1402 config WEAK_ORDERING
1406 # CPU may reorder reads and writes beyond LL/SC
1407 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1409 config WEAK_REORDERING_BEYOND_LLSC
1414 # These two indicate any level of the MIPS32 and MIPS64 architecture
1418 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1422 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1425 # These two indicate the revision of the architecture, either Release 1 or Release 2
1429 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1433 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1435 config SYS_SUPPORTS_32BIT_KERNEL
1437 config SYS_SUPPORTS_64BIT_KERNEL
1439 config CPU_SUPPORTS_32BIT_KERNEL
1441 config CPU_SUPPORTS_64BIT_KERNEL
1443 config CPU_SUPPORTS_CPUFREQ
1445 config CPU_SUPPORTS_ADDRWINCFG
1447 config CPU_SUPPORTS_HUGEPAGES
1449 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1451 config MIPS_PGD_C0_CONTEXT
1453 default y if 64BIT && CPU_MIPSR2
1456 # Set to y for ptrace access to watch registers.
1458 config HARDWARE_WATCHPOINTS
1460 default y if CPU_MIPSR1 || CPU_MIPSR2
1466 prompt "Kernel code model"
1468 You should only select this option if you have a workload that
1469 actually benefits from 64-bit processing or if your machine has
1470 large memory. You will only be presented a single option in this
1471 menu if your system does not support both 32-bit and 64-bit kernels.
1474 bool "32-bit kernel"
1475 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1478 Select this option if you want to build a 32-bit kernel.
1480 bool "64-bit kernel"
1481 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1482 select HAVE_SYSCALL_WRAPPERS
1484 Select this option if you want to build a 64-bit kernel.
1489 prompt "Kernel page size"
1490 default PAGE_SIZE_4KB
1492 config PAGE_SIZE_4KB
1494 depends on !CPU_LOONGSON2
1496 This option select the standard 4kB Linux page size. On some
1497 R3000-family processors this is the only available page size. Using
1498 4kB page size will minimize memory consumption and is therefore
1499 recommended for low memory systems.
1501 config PAGE_SIZE_8KB
1503 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1505 Using 8kB page size will result in higher performance kernel at
1506 the price of higher memory consumption. This option is available
1507 only on R8000 and cnMIPS processors. Note that you will need a
1508 suitable Linux distribution to support this.
1510 config PAGE_SIZE_16KB
1512 depends on !CPU_R3000 && !CPU_TX39XX
1514 Using 16kB page size will result in higher performance kernel at
1515 the price of higher memory consumption. This option is available on
1516 all non-R3000 family processors. Note that you will need a suitable
1517 Linux distribution to support this.
1519 config PAGE_SIZE_32KB
1521 depends on CPU_CAVIUM_OCTEON
1523 Using 32kB page size will result in higher performance kernel at
1524 the price of higher memory consumption. This option is available
1525 only on cnMIPS cores. Note that you will need a suitable Linux
1526 distribution to support this.
1528 config PAGE_SIZE_64KB
1530 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1532 Using 64kB page size will result in higher performance kernel at
1533 the price of higher memory consumption. This option is available on
1534 all non-R3000 family processor. Not that at the time of this
1535 writing this option is still high experimental.
1542 config IP22_CPU_SCACHE
1547 # Support for a MIPS32 / MIPS64 style S-caches
1549 config MIPS_CPU_SCACHE
1553 config R5000_CPU_SCACHE
1557 config RM7000_CPU_SCACHE
1561 config SIBYTE_DMA_PAGEOPS
1562 bool "Use DMA to clear/copy pages"
1565 Instead of using the CPU to zero and copy pages, use a Data Mover
1566 channel. These DMA channels are otherwise unused by the standard
1567 SiByte Linux port. Seems to give a small performance benefit.
1569 config CPU_HAS_PREFETCH
1573 prompt "MIPS MT options"
1575 config MIPS_MT_DISABLED
1576 bool "Disable multithreading support."
1578 Use this option if your workload can't take advantage of
1579 MIPS hardware multithreading support. On systems that don't have
1580 the option of an MT-enabled processor this option will be the only
1581 option in this menu.
1584 bool "Use 1 TC on each available VPE for SMP"
1585 depends on SYS_SUPPORTS_MULTITHREADING
1586 select CPU_MIPSR2_IRQ_VI
1587 select CPU_MIPSR2_IRQ_EI
1589 select NR_CPUS_DEFAULT_2
1591 select SYS_SUPPORTS_SCHED_SMT if SMP
1592 select SYS_SUPPORTS_SMP
1595 This is a kernel model which is also known a VSMP or lately
1596 has been marketesed into SMVP.
1599 bool "SMTC: Use all TCs on all VPEs for SMP"
1600 depends on CPU_MIPS32_R2
1601 #depends on CPU_MIPS64_R2 # once there is hardware ...
1602 depends on SYS_SUPPORTS_MULTITHREADING
1603 select CPU_MIPSR2_IRQ_VI
1604 select CPU_MIPSR2_IRQ_EI
1606 select NR_CPUS_DEFAULT_8
1608 select SYS_SUPPORTS_SMP
1611 This is a kernel model which is known a SMTC or lately has been
1612 marketesed into SMVP.
1620 bool "SMT (multithreading) scheduler support"
1621 depends on SYS_SUPPORTS_SCHED_SMT
1624 SMT scheduler support improves the CPU scheduler's decision making
1625 when dealing with MIPS MT enabled cores at a cost of slightly
1626 increased overhead in some places. If unsure say N here.
1628 config SYS_SUPPORTS_SCHED_SMT
1632 config SYS_SUPPORTS_MULTITHREADING
1635 config MIPS_MT_FPAFF
1636 bool "Dynamic FPU affinity for FP-intensive threads"
1638 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1640 config MIPS_VPE_LOADER
1641 bool "VPE loader support."
1642 depends on SYS_SUPPORTS_MULTITHREADING
1643 select CPU_MIPSR2_IRQ_VI
1644 select CPU_MIPSR2_IRQ_EI
1647 Includes a loader for loading an elf relocatable object
1648 onto another VPE and running it.
1650 config MIPS_MT_SMTC_IM_BACKSTOP
1651 bool "Use per-TC register bits as backstop for inhibited IM bits"
1652 depends on MIPS_MT_SMTC
1655 To support multiple TC microthreads acting as "CPUs" within
1656 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1657 during interrupt handling. To support legacy drivers and interrupt
1658 controller management code, SMTC has a "backstop" to track and
1659 if necessary restore the interrupt mask. This has some performance
1660 impact on interrupt service overhead.
1662 config MIPS_MT_SMTC_IRQAFF
1663 bool "Support IRQ affinity API"
1664 depends on MIPS_MT_SMTC
1667 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1668 for SMTC Linux kernel. Requires platform support, of which
1669 an example can be found in the MIPS kernel i8259 and Malta
1670 platform code. Adds some overhead to interrupt dispatch, and
1671 should be used only if you know what you are doing.
1673 config MIPS_VPE_LOADER_TOM
1674 bool "Load VPE program into memory hidden from linux"
1675 depends on MIPS_VPE_LOADER
1678 The loader can use memory that is present but has been hidden from
1679 Linux using the kernel command line option "mem=xxMB". It's up to
1680 you to ensure the amount you put in the option and the space your
1681 program requires is less or equal to the amount physically present.
1683 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1684 config MIPS_VPE_APSP_API
1685 bool "Enable support for AP/SP API (RTLX)"
1686 depends on MIPS_VPE_LOADER
1689 config MIPS_APSP_KSPD
1691 depends on MIPS_VPE_APSP_API
1694 KSPD is a kernel daemon that accepts syscall requests from the SP
1695 side, actions them and returns the results. It also handles the
1696 "exit" syscall notifying other kernel modules the SP program is
1697 exiting. You probably want to say yes here.
1700 bool "MIPS CMP framework support"
1701 depends on SYS_SUPPORTS_MIPS_CMP
1703 select SYS_SUPPORTS_SMP
1704 select SYS_SUPPORTS_SCHED_SMT if SMP
1705 select WEAK_ORDERING
1708 This is a placeholder option for the GCMP work. It will need to
1709 be handled differently...
1711 config SB1_PASS_1_WORKAROUNDS
1713 depends on CPU_SB1_PASS_1
1716 config SB1_PASS_2_WORKAROUNDS
1718 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1721 config SB1_PASS_2_1_WORKAROUNDS
1723 depends on CPU_SB1 && CPU_SB1_PASS_2
1726 config 64BIT_PHYS_ADDR
1729 config CPU_HAS_SMARTMIPS
1730 depends on SYS_SUPPORTS_SMARTMIPS
1731 bool "Support for the SmartMIPS ASE"
1733 SmartMIPS is a extension of the MIPS32 architecture aimed at
1734 increased security at both hardware and software level for
1735 smartcards. Enabling this option will allow proper use of the
1736 SmartMIPS instructions by Linux applications. However a kernel with
1737 this option will not work on a MIPS core without SmartMIPS core. If
1738 you don't know you probably don't have SmartMIPS and should say N
1745 # Vectored interrupt mode is an R2 feature
1747 config CPU_MIPSR2_IRQ_VI
1751 # Extended interrupt mode is an R2 feature
1753 config CPU_MIPSR2_IRQ_EI
1758 depends on !CPU_R3000
1761 config GENERIC_CLOCKEVENTS_BROADCAST
1767 config CPU_DADDI_WORKAROUNDS
1770 config CPU_R4000_WORKAROUNDS
1772 select CPU_R4400_WORKAROUNDS
1774 config CPU_R4400_WORKAROUNDS
1778 # Use the generic interrupt handling code in kernel/irq/:
1780 config GENERIC_HARDIRQS
1784 config GENERIC_IRQ_PROBE
1792 # - Highmem only makes sense for the 32-bit kernel.
1793 # - The current highmem code will only work properly on physically indexed
1794 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1795 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1796 # moment we protect the user and offer the highmem option only on machines
1797 # where it's known to be safe. This will not offer highmem on a few systems
1798 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1799 # indexed CPUs but we're playing safe.
1800 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1801 # know they might have memory configurations that could make use of highmem
1805 bool "High Memory Support"
1806 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1808 config CPU_SUPPORTS_HIGHMEM
1811 config SYS_SUPPORTS_HIGHMEM
1814 config SYS_SUPPORTS_SMARTMIPS
1817 config ARCH_FLATMEM_ENABLE
1819 depends on !NUMA && !CPU_LOONGSON2
1821 config ARCH_DISCONTIGMEM_ENABLE
1823 default y if SGI_IP27
1825 Say Y to support efficient handling of discontiguous physical memory,
1826 for architectures which are either NUMA (Non-Uniform Memory Access)
1827 or have huge holes in the physical address space for other reasons.
1828 See <file:Documentation/vm/numa> for more.
1830 config ARCH_POPULATES_NODE_MAP
1833 config ARCH_SPARSEMEM_ENABLE
1835 select SPARSEMEM_STATIC
1839 depends on SYS_SUPPORTS_NUMA
1841 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1842 Access). This option improves performance on systems with more
1843 than two nodes; on two node systems it is generally better to
1844 leave it disabled; on single node systems disable this option
1847 config SYS_SUPPORTS_NUMA
1853 depends on NEED_MULTIPLE_NODES
1858 bool "Multi-Processing support"
1859 depends on SYS_SUPPORTS_SMP
1861 select USE_GENERIC_SMP_HELPERS
1863 This enables support for systems with more than one CPU. If you have
1864 a system with only one CPU, like most personal computers, say N. If
1865 you have a system with more than one CPU, say Y.
1867 If you say N here, the kernel will run on single and multiprocessor
1868 machines, but will use only one CPU of a multiprocessor machine. If
1869 you say Y here, the kernel will run on many, but not all,
1870 singleprocessor machines. On a singleprocessor machine, the kernel
1871 will run faster if you say N here.
1873 People using multiprocessor machines who say Y here should also say
1874 Y to "Enhanced Real Time Clock Support", below.
1876 See also the SMP-HOWTO available at
1877 <http://www.tldp.org/docs.html#howto>.
1879 If you don't know what to do here, say N.
1884 config SYS_SUPPORTS_MIPS_CMP
1887 config SYS_SUPPORTS_SMP
1890 config NR_CPUS_DEFAULT_1
1893 config NR_CPUS_DEFAULT_2
1896 config NR_CPUS_DEFAULT_4
1899 config NR_CPUS_DEFAULT_8
1902 config NR_CPUS_DEFAULT_16
1905 config NR_CPUS_DEFAULT_32
1908 config NR_CPUS_DEFAULT_64
1912 int "Maximum number of CPUs (2-64)"
1913 range 1 64 if NR_CPUS_DEFAULT_1
1915 default "1" if NR_CPUS_DEFAULT_1
1916 default "2" if NR_CPUS_DEFAULT_2
1917 default "4" if NR_CPUS_DEFAULT_4
1918 default "8" if NR_CPUS_DEFAULT_8
1919 default "16" if NR_CPUS_DEFAULT_16
1920 default "32" if NR_CPUS_DEFAULT_32
1921 default "64" if NR_CPUS_DEFAULT_64
1923 This allows you to specify the maximum number of CPUs which this
1924 kernel will support. The maximum supported value is 32 for 32-bit
1925 kernel and 64 for 64-bit kernels; the minimum value which makes
1926 sense is 1 for Qemu (useful only for kernel debugging purposes)
1927 and 2 for all others.
1929 This is purely to save memory - each supported CPU adds
1930 approximately eight kilobytes to the kernel image. For best
1931 performance should round up your number of processors to the next
1934 source "kernel/time/Kconfig"
1937 # Timer Interrupt Frequency Configuration
1941 prompt "Timer frequency"
1944 Allows the configuration of the timer frequency.
1947 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1950 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1953 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1956 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1959 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1962 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1965 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1969 config SYS_SUPPORTS_48HZ
1972 config SYS_SUPPORTS_100HZ
1975 config SYS_SUPPORTS_128HZ
1978 config SYS_SUPPORTS_250HZ
1981 config SYS_SUPPORTS_256HZ
1984 config SYS_SUPPORTS_1000HZ
1987 config SYS_SUPPORTS_1024HZ
1990 config SYS_SUPPORTS_ARBIT_HZ
1992 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1993 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1994 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1995 !SYS_SUPPORTS_1024HZ
2000 default 100 if HZ_100
2001 default 128 if HZ_128
2002 default 250 if HZ_250
2003 default 256 if HZ_256
2004 default 1000 if HZ_1000
2005 default 1024 if HZ_1024
2007 source "kernel/Kconfig.preempt"
2009 config MIPS_INSANE_LARGE
2010 bool "Support for large 64-bit configurations"
2011 depends on CPU_R10000 && 64BIT
2013 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2014 previous 64-bit processors which only supported 40 bit / 1TB. If you
2015 need processes of more than 1TB virtual address space, say Y here.
2016 This will result in additional memory usage, so it is not
2017 recommended for normal users.
2020 bool "Kexec system call (EXPERIMENTAL)"
2021 depends on EXPERIMENTAL
2023 kexec is a system call that implements the ability to shutdown your
2024 current kernel, and to start another kernel. It is like a reboot
2025 but it is independent of the system firmware. And like a reboot
2026 you can start any kernel with it, not just Linux.
2028 The name comes from the similarity to the exec system call.
2030 It is an ongoing process to be certain the hardware in a machine
2031 is properly shutdown, so do not be surprised if this code does not
2032 initially work for you. It may help to enable device hotplugging
2033 support. As of this writing the exact hardware interface is
2034 strongly in flux, so no good recommendation can be made.
2037 bool "Enable seccomp to safely compute untrusted bytecode"
2041 This kernel feature is useful for number crunching applications
2042 that may need to compute untrusted bytecode during their
2043 execution. By using pipes or other transports made available to
2044 the process as file descriptors supporting the read/write
2045 syscalls, it's possible to isolate those applications in
2046 their own address space using seccomp. Once seccomp is
2047 enabled via /proc/<pid>/seccomp, it cannot be disabled
2048 and the task is only allowed to execute a few safe syscalls
2049 defined by each seccomp mode.
2051 If unsure, say Y. Only embedded should say N here.
2055 config LOCKDEP_SUPPORT
2059 config STACKTRACE_SUPPORT
2063 source "init/Kconfig"
2065 source "kernel/Kconfig.freezer"
2067 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2075 bool "Support for PCI controller"
2076 depends on HW_HAS_PCI
2079 Find out whether you have a PCI motherboard. PCI is the name of a
2080 bus system, i.e. the way the CPU talks to the other stuff inside
2081 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2087 source "drivers/pci/Kconfig"
2090 # ISA support is now enabled via select. Too many systems still have the one
2091 # or other ISA chip on the board that users don't know about so don't expect
2092 # users to choose the right thing ...
2099 depends on HW_HAS_EISA
2101 select GENERIC_ISA_DMA
2103 The Extended Industry Standard Architecture (EISA) bus was
2104 developed as an open alternative to the IBM MicroChannel bus.
2106 The EISA bus provided some of the features of the IBM MicroChannel
2107 bus while maintaining backward compatibility with cards made for
2108 the older ISA bus. The EISA bus saw limited use between 1988 and
2109 1995 when it was made obsolete by the PCI bus.
2111 Say Y here if you are building a kernel for an EISA-based machine.
2115 source "drivers/eisa/Kconfig"
2118 bool "TURBOchannel support"
2119 depends on MACH_DECSTATION
2121 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2122 processors. Documentation on writing device drivers for TurboChannel
2124 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2127 # bool "Access.Bus support"
2136 select MIPS_EXTERNAL_TIMER
2141 source "drivers/pcmcia/Kconfig"
2143 source "drivers/pci/hotplug/Kconfig"
2147 menu "Executable file formats"
2149 source "fs/Kconfig.binfmt"
2154 config MIPS32_COMPAT
2155 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2158 Select this option if you want Linux/MIPS 32-bit binary
2159 compatibility. Since all software available for Linux/MIPS is
2160 currently 32-bit you should say Y here.
2164 depends on MIPS32_COMPAT
2167 config SYSVIPC_COMPAT
2169 depends on COMPAT && SYSVIPC
2173 bool "Kernel support for o32 binaries"
2174 depends on MIPS32_COMPAT
2176 Select this option if you want to run o32 binaries. These are pure
2177 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2178 existing binaries are in this format.
2183 bool "Kernel support for n32 binaries"
2184 depends on MIPS32_COMPAT
2186 Select this option if you want to run n32 binaries. These are
2187 64-bit binaries using 32-bit quantities for addressing and certain
2188 data that would normally be 64-bit. They are used in special
2195 default y if MIPS32_O32 || MIPS32_N32
2199 menu "Power management options"
2201 config ARCH_HIBERNATION_POSSIBLE
2203 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2205 config ARCH_SUSPEND_POSSIBLE
2207 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2209 source "kernel/power/Kconfig"
2213 source "arch/mips/kernel/cpufreq/Kconfig"
2215 source "net/Kconfig"
2217 source "drivers/Kconfig"
2221 source "arch/mips/Kconfig.debug"
2223 source "security/Kconfig"
2225 source "crypto/Kconfig"
2227 source "lib/Kconfig"