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 menu "Machine selection"
25 bool "Alchemy processor based machines"
26 select SYS_SUPPORTS_ZBOOT
29 bool "Texas Instruments AR7"
31 select DMA_NONCOHERENT
37 select SYS_HAS_CPU_MIPS32_R1
38 select SYS_HAS_EARLY_PRINTK
39 select SYS_SUPPORTS_32BIT_KERNEL
40 select SYS_SUPPORTS_LITTLE_ENDIAN
41 select SYS_SUPPORTS_ZBOOT_UART16550
42 select ARCH_REQUIRE_GPIOLIB
46 Support for the Texas Instruments AR7 System-on-a-Chip
47 family: TNETD7100, 7200 and 7300.
50 bool "Broadcom BCM47XX based boards"
53 select DMA_NONCOHERENT
56 select SYS_HAS_CPU_MIPS32_R1
57 select SYS_SUPPORTS_32BIT_KERNEL
58 select SYS_SUPPORTS_LITTLE_ENDIAN
60 select SSB_DRIVER_MIPS
61 select SSB_DRIVER_EXTIF
63 select SSB_PCICORE_HOSTMODE if PCI
65 select SYS_HAS_EARLY_PRINTK
68 Support for BCM47XX based boards
71 bool "Broadcom BCM63XX based boards"
74 select DMA_NONCOHERENT
76 select SYS_HAS_CPU_MIPS32_R1
77 select SYS_SUPPORTS_32BIT_KERNEL
78 select SYS_SUPPORTS_BIG_ENDIAN
79 select SYS_HAS_EARLY_PRINTK
81 select ARCH_REQUIRE_GPIOLIB
83 Support for BCM63XX based boards
90 select DMA_NONCOHERENT
96 select PCI_GT64XXX_PCI0
98 select SYS_HAS_CPU_NEVADA
99 select SYS_HAS_EARLY_PRINTK
100 select SYS_SUPPORTS_32BIT_KERNEL
101 select SYS_SUPPORTS_64BIT_KERNEL
102 select SYS_SUPPORTS_LITTLE_ENDIAN
104 config MACH_DECSTATION
111 select CPU_DADDI_WORKAROUNDS if 64BIT
112 select CPU_R4000_WORKAROUNDS if 64BIT
113 select CPU_R4400_WORKAROUNDS if 64BIT
114 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_R3000
118 select SYS_HAS_CPU_R4X00
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
121 select SYS_SUPPORTS_LITTLE_ENDIAN
122 select SYS_SUPPORTS_128HZ
123 select SYS_SUPPORTS_256HZ
124 select SYS_SUPPORTS_1024HZ
126 This enables support for DEC's MIPS based workstations. For details
127 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
128 DECstation porting pages on <http://decstation.unix-ag.org/>.
130 If you have one of the following DECstation Models you definitely
131 want to choose R4xx0 for the CPU Type:
138 otherwise choose R3000.
141 bool "Jazz family of machines"
144 select ARCH_MAY_HAVE_PC_FDC
147 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
148 select GENERIC_ISA_DMA
153 select SYS_HAS_CPU_R4X00
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
156 select SYS_SUPPORTS_100HZ
158 This a family of machines based on the MIPS R4030 chipset which was
159 used by several vendors to build RISC/os and Windows NT workstations.
160 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
161 Olivetti M700-10 workstations.
164 bool "LASAT Networks platforms"
167 select DMA_NONCOHERENT
168 select SYS_HAS_EARLY_PRINTK
171 select PCI_GT64XXX_PCI0
173 select R5000_CPU_SCACHE
174 select SYS_HAS_CPU_R5000
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
177 select SYS_SUPPORTS_LITTLE_ENDIAN
180 bool "Loongson family of machines"
181 select SYS_SUPPORTS_ZBOOT
183 This enables the support of Loongson family of machines.
185 Loongson is a family of general-purpose MIPS-compatible CPUs.
186 developed at Institute of Computing Technology (ICT),
187 Chinese Academy of Sciences (CAS) in the People's Republic
188 of China. The chief architect is Professor Weiwu Hu.
191 bool "MIPS Malta board"
192 select ARCH_MAY_HAVE_PC_FDC
197 select DMA_NONCOHERENT
198 select GENERIC_ISA_DMA
204 select MIPS_BOARDS_GEN
206 select MIPS_CPU_SCACHE
207 select PCI_GT64XXX_PCI0
210 select SYS_HAS_CPU_MIPS32_R1
211 select SYS_HAS_CPU_MIPS32_R2
212 select SYS_HAS_CPU_MIPS64_R1
213 select SYS_HAS_CPU_NEVADA
214 select SYS_HAS_CPU_RM7000
215 select SYS_HAS_EARLY_PRINTK
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_64BIT_KERNEL
218 select SYS_SUPPORTS_BIG_ENDIAN
219 select SYS_SUPPORTS_LITTLE_ENDIAN
220 select SYS_SUPPORTS_MIPS_CMP
221 select SYS_SUPPORTS_MULTITHREADING
222 select SYS_SUPPORTS_SMARTMIPS
223 select SYS_SUPPORTS_ZBOOT
225 This enables support for the MIPS Technologies Malta evaluation
229 bool 'MIPS simulator (MIPSsim)'
232 select DMA_NONCOHERENT
233 select SYS_HAS_EARLY_PRINTK
236 select SYS_HAS_CPU_MIPS32_R1
237 select SYS_HAS_CPU_MIPS32_R2
238 select SYS_HAS_EARLY_PRINTK
239 select SYS_SUPPORTS_32BIT_KERNEL
240 select SYS_SUPPORTS_BIG_ENDIAN
241 select SYS_SUPPORTS_MULTITHREADING
242 select SYS_SUPPORTS_LITTLE_ENDIAN
244 This option enables support for MIPS Technologies MIPSsim software
248 bool "NEC EMMA2RH Mark-eins board"
252 This enables support for the NEC Electronics Mark-eins boards.
255 bool "NEC VR4100 series based machines"
258 select SYS_HAS_CPU_VR41XX
259 select ARCH_REQUIRE_GPIOLIB
262 bool "NXP STB220 board"
265 Support for NXP Semiconductors STB220 Development Board.
272 Support for NXP Semiconductors STB225 Development Board.
275 bool "NXP PNX8550 based JBS board"
277 select SYS_SUPPORTS_LITTLE_ENDIAN
279 config PNX8550_STB810
280 bool "NXP PNX8550 based STB810 board"
282 select SYS_SUPPORTS_LITTLE_ENDIAN
285 bool "PMC-Sierra MSP chipsets"
286 depends on EXPERIMENTAL
287 select DMA_NONCOHERENT
289 select NO_EXCEPT_FILL
291 select SYS_HAS_CPU_MIPS32_R1
292 select SYS_HAS_CPU_MIPS32_R2
293 select SYS_SUPPORTS_32BIT_KERNEL
294 select SYS_SUPPORTS_BIG_ENDIAN
297 select SERIAL_8250_CONSOLE
299 This adds support for the PMC-Sierra family of Multi-Service
300 Processor System-On-A-Chips. These parts include a number
301 of integrated peripherals, interfaces and DSPs in addition to
302 a variety of MIPS cores.
305 bool "PMC-Sierra Yosemite eval board"
314 select SYS_HAS_CPU_RM9000
315 select SYS_HAS_EARLY_PRINTK
316 select SYS_SUPPORTS_32BIT_KERNEL
317 select SYS_SUPPORTS_64BIT_KERNEL
318 select SYS_SUPPORTS_BIG_ENDIAN
319 select SYS_SUPPORTS_HIGHMEM
320 select SYS_SUPPORTS_SMP
322 Yosemite is an evaluation board for the RM9000x2 processor
323 manufactured by PMC-Sierra.
329 select CPU_MIPSR2_IRQ_VI
330 select CPU_MIPSR2_IRQ_EI
332 select DMA_NONCOHERENT
334 select SYS_HAS_EARLY_PRINTK
335 select SYS_HAS_CPU_MIPS32_R2
336 select SYS_SUPPORTS_32BIT_KERNEL
337 select SYS_SUPPORTS_BIG_ENDIAN
338 select SYS_SUPPORTS_HIGHMEM
339 select USB_OHCI_LITTLE_ENDIAN
341 This enables support for the Cisco PowerTV Platform.
344 bool "SGI IP22 (Indy/Indigo2)"
350 select DEFAULT_SGI_PARTITION
351 select DMA_NONCOHERENT
355 select IP22_CPU_SCACHE
357 select GENERIC_ISA_DMA_SUPPORT_BROKEN
359 select SGI_HAS_INDYDOG
365 select SYS_HAS_CPU_R4X00
366 select SYS_HAS_CPU_R5000
368 # Disable EARLY_PRINTK for now since it leads to overwritten prom
369 # memory during early boot on some machines.
371 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
372 # for a more details discussion
374 # select SYS_HAS_EARLY_PRINTK
375 select SYS_SUPPORTS_32BIT_KERNEL
376 select SYS_SUPPORTS_64BIT_KERNEL
377 select SYS_SUPPORTS_BIG_ENDIAN
379 This are the SGI Indy, Challenge S and Indigo2, as well as certain
380 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
381 that runs on these, say Y here.
384 bool "SGI IP27 (Origin200/2000)"
388 select DEFAULT_SGI_PARTITION
390 select SYS_HAS_EARLY_PRINTK
392 select NR_CPUS_DEFAULT_64
393 select SYS_HAS_CPU_R10000
394 select SYS_SUPPORTS_64BIT_KERNEL
395 select SYS_SUPPORTS_BIG_ENDIAN
396 select SYS_SUPPORTS_NUMA
397 select SYS_SUPPORTS_SMP
399 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
400 workstations. To compile a Linux kernel that runs on these, say Y
404 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
405 depends on EXPERIMENTAL
411 select DEFAULT_SGI_PARTITION
412 select DMA_NONCOHERENT
413 select GENERIC_ISA_DMA_SUPPORT_BROKEN
419 select SGI_HAS_INDYDOG
425 select SYS_HAS_CPU_R10000
427 # Disable EARLY_PRINTK for now since it leads to overwritten prom
428 # memory during early boot on some machines.
430 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
431 # for a more details discussion
433 # select SYS_HAS_EARLY_PRINTK
434 select SYS_SUPPORTS_64BIT_KERNEL
435 select SYS_SUPPORTS_BIG_ENDIAN
437 This is the SGI Indigo2 with R10000 processor. To compile a Linux
438 kernel that runs on these, say Y here.
447 select DMA_NONCOHERENT
450 select R5000_CPU_SCACHE
451 select RM7000_CPU_SCACHE
452 select SYS_HAS_CPU_R5000
453 select SYS_HAS_CPU_R10000 if BROKEN
454 select SYS_HAS_CPU_RM7000
455 select SYS_HAS_CPU_NEVADA
456 select SYS_SUPPORTS_64BIT_KERNEL
457 select SYS_SUPPORTS_BIG_ENDIAN
459 If you want this kernel to run on SGI O2 workstation, say Y here.
462 bool "Sibyte BCM91120C-CRhine"
463 depends on EXPERIMENTAL
466 select SIBYTE_BCM1120
468 select SYS_HAS_CPU_SB1
469 select SYS_SUPPORTS_BIG_ENDIAN
470 select SYS_SUPPORTS_LITTLE_ENDIAN
473 bool "Sibyte BCM91120x-Carmel"
474 depends on EXPERIMENTAL
477 select SIBYTE_BCM1120
479 select SYS_HAS_CPU_SB1
480 select SYS_SUPPORTS_BIG_ENDIAN
481 select SYS_SUPPORTS_LITTLE_ENDIAN
484 bool "Sibyte BCM91125C-CRhone"
485 depends on EXPERIMENTAL
488 select SIBYTE_BCM1125
490 select SYS_HAS_CPU_SB1
491 select SYS_SUPPORTS_BIG_ENDIAN
492 select SYS_SUPPORTS_HIGHMEM
493 select SYS_SUPPORTS_LITTLE_ENDIAN
496 bool "Sibyte BCM91125E-Rhone"
497 depends on EXPERIMENTAL
500 select SIBYTE_BCM1125H
502 select SYS_HAS_CPU_SB1
503 select SYS_SUPPORTS_BIG_ENDIAN
504 select SYS_SUPPORTS_LITTLE_ENDIAN
507 bool "Sibyte BCM91250A-SWARM"
510 select HAVE_PATA_PLATFORM
511 select NR_CPUS_DEFAULT_2
514 select SYS_HAS_CPU_SB1
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_HIGHMEM
517 select SYS_SUPPORTS_LITTLE_ENDIAN
518 select ZONE_DMA32 if 64BIT
520 config SIBYTE_LITTLESUR
521 bool "Sibyte BCM91250C2-LittleSur"
522 depends on EXPERIMENTAL
525 select HAVE_PATA_PLATFORM
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 NEED_DMA_MAP_STATE
817 config NEED_DMA_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 select ARCH_REQUIRE_GPIOLIB
1079 The Loongson 2F processor implements the MIPS III instruction set
1080 with many extensions.
1082 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1083 have a similar programming interface with FPGA northbridge used in
1086 config CPU_MIPS32_R1
1087 bool "MIPS32 Release 1"
1088 depends on SYS_HAS_CPU_MIPS32_R1
1089 select CPU_HAS_PREFETCH
1090 select CPU_SUPPORTS_32BIT_KERNEL
1091 select CPU_SUPPORTS_HIGHMEM
1093 Choose this option to build a kernel for release 1 or later of the
1094 MIPS32 architecture. Most modern embedded systems with a 32-bit
1095 MIPS processor are based on a MIPS32 processor. If you know the
1096 specific type of processor in your system, choose those that one
1097 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1098 Release 2 of the MIPS32 architecture is available since several
1099 years so chances are you even have a MIPS32 Release 2 processor
1100 in which case you should choose CPU_MIPS32_R2 instead for better
1103 config CPU_MIPS32_R2
1104 bool "MIPS32 Release 2"
1105 depends on SYS_HAS_CPU_MIPS32_R2
1106 select CPU_HAS_PREFETCH
1107 select CPU_SUPPORTS_32BIT_KERNEL
1108 select CPU_SUPPORTS_HIGHMEM
1110 Choose this option to build a kernel for release 2 or later of the
1111 MIPS32 architecture. Most modern embedded systems with a 32-bit
1112 MIPS processor are based on a MIPS32 processor. If you know the
1113 specific type of processor in your system, choose those that one
1114 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1116 config CPU_MIPS64_R1
1117 bool "MIPS64 Release 1"
1118 depends on SYS_HAS_CPU_MIPS64_R1
1119 select CPU_HAS_PREFETCH
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1122 select CPU_SUPPORTS_HIGHMEM
1123 select CPU_SUPPORTS_HUGEPAGES
1125 Choose this option to build a kernel for release 1 or later of the
1126 MIPS64 architecture. Many modern embedded systems with a 64-bit
1127 MIPS processor are based on a MIPS64 processor. If you know the
1128 specific type of processor in your system, choose those that one
1129 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1130 Release 2 of the MIPS64 architecture is available since several
1131 years so chances are you even have a MIPS64 Release 2 processor
1132 in which case you should choose CPU_MIPS64_R2 instead for better
1135 config CPU_MIPS64_R2
1136 bool "MIPS64 Release 2"
1137 depends on SYS_HAS_CPU_MIPS64_R2
1138 select CPU_HAS_PREFETCH
1139 select CPU_SUPPORTS_32BIT_KERNEL
1140 select CPU_SUPPORTS_64BIT_KERNEL
1141 select CPU_SUPPORTS_HIGHMEM
1142 select CPU_SUPPORTS_HUGEPAGES
1144 Choose this option to build a kernel for release 2 or later of the
1145 MIPS64 architecture. Many modern embedded systems with a 64-bit
1146 MIPS processor are based on a MIPS64 processor. If you know the
1147 specific type of processor in your system, choose those that one
1148 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1152 depends on SYS_HAS_CPU_R3000
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_HIGHMEM
1157 Please make sure to pick the right CPU type. Linux/MIPS is not
1158 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1159 *not* work on R4000 machines and vice versa. However, since most
1160 of the supported machines have an R4000 (or similar) CPU, R4x00
1161 might be a safe bet. If the resulting kernel does not work,
1162 try to recompile with R3000.
1166 depends on SYS_HAS_CPU_TX39XX
1167 select CPU_SUPPORTS_32BIT_KERNEL
1171 depends on SYS_HAS_CPU_VR41XX
1172 select CPU_SUPPORTS_32BIT_KERNEL
1173 select CPU_SUPPORTS_64BIT_KERNEL
1175 The options selects support for the NEC VR4100 series of processors.
1176 Only choose this option if you have one of these processors as a
1177 kernel built with this option will not run on any other type of
1178 processor or vice versa.
1182 depends on SYS_HAS_CPU_R4300
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_64BIT_KERNEL
1186 MIPS Technologies R4300-series processors.
1190 depends on SYS_HAS_CPU_R4X00
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_64BIT_KERNEL
1194 MIPS Technologies R4000-series processors other than 4300, including
1195 the R4000, R4400, R4600, and 4700.
1199 depends on SYS_HAS_CPU_TX49XX
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_64BIT_KERNEL
1206 depends on SYS_HAS_CPU_R5000
1207 select CPU_SUPPORTS_32BIT_KERNEL
1208 select CPU_SUPPORTS_64BIT_KERNEL
1210 MIPS Technologies R5000-series processors other than the Nevada.
1214 depends on SYS_HAS_CPU_R5432
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1220 depends on SYS_HAS_CPU_R5500
1221 select CPU_SUPPORTS_32BIT_KERNEL
1222 select CPU_SUPPORTS_64BIT_KERNEL
1223 select CPU_SUPPORTS_HUGEPAGES
1225 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1230 depends on EXPERIMENTAL
1231 depends on SYS_HAS_CPU_R6000
1232 select CPU_SUPPORTS_32BIT_KERNEL
1234 MIPS Technologies R6000 and R6000A series processors. Note these
1235 processors are extremely rare and the support for them is incomplete.
1239 depends on SYS_HAS_CPU_NEVADA
1240 select CPU_SUPPORTS_32BIT_KERNEL
1241 select CPU_SUPPORTS_64BIT_KERNEL
1243 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1247 depends on EXPERIMENTAL
1248 depends on SYS_HAS_CPU_R8000
1249 select CPU_HAS_PREFETCH
1250 select CPU_SUPPORTS_64BIT_KERNEL
1252 MIPS Technologies R8000 processors. Note these processors are
1253 uncommon and the support for them is incomplete.
1257 depends on SYS_HAS_CPU_R10000
1258 select CPU_HAS_PREFETCH
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_64BIT_KERNEL
1261 select CPU_SUPPORTS_HIGHMEM
1263 MIPS Technologies R10000-series processors.
1267 depends on SYS_HAS_CPU_RM7000
1268 select CPU_HAS_PREFETCH
1269 select CPU_SUPPORTS_32BIT_KERNEL
1270 select CPU_SUPPORTS_64BIT_KERNEL
1271 select CPU_SUPPORTS_HIGHMEM
1275 depends on SYS_HAS_CPU_RM9000
1276 select CPU_HAS_PREFETCH
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1279 select CPU_SUPPORTS_HIGHMEM
1280 select WEAK_ORDERING
1284 depends on SYS_HAS_CPU_SB1
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HIGHMEM
1288 select WEAK_ORDERING
1290 config CPU_CAVIUM_OCTEON
1291 bool "Cavium Octeon processor"
1292 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1294 select IRQ_CPU_OCTEON
1295 select CPU_HAS_PREFETCH
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select SYS_SUPPORTS_SMP
1298 select NR_CPUS_DEFAULT_16
1299 select WEAK_ORDERING
1300 select CPU_SUPPORTS_HIGHMEM
1301 select CPU_SUPPORTS_HUGEPAGES
1303 The Cavium Octeon processor is a highly integrated chip containing
1304 many ethernet hardware widgets for networking tasks. The processor
1305 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1306 Full details can be found at http://www.caviumnetworks.com.
1311 config CPU_NOP_WORKAROUNDS
1314 config CPU_JUMP_WORKAROUNDS
1317 config CPU_LOONGSON2F_WORKAROUNDS
1318 bool "Loongson 2F Workarounds"
1320 select CPU_NOP_WORKAROUNDS
1321 select CPU_JUMP_WORKAROUNDS
1323 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1324 require workarounds. Without workarounds the system may hang
1325 unexpectedly. For more information please refer to the gas
1326 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1328 Loongson 2F03 and later have fixed these issues and no workarounds
1329 are needed. The workarounds have no significant side effect on them
1330 but may decrease the performance of the system so this option should
1331 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1334 If unsure, please say Y.
1335 endif # CPU_LOONGSON2F
1337 config SYS_SUPPORTS_ZBOOT
1339 select HAVE_KERNEL_GZIP
1340 select HAVE_KERNEL_BZIP2
1341 select HAVE_KERNEL_LZMA
1342 select HAVE_KERNEL_LZO
1344 config SYS_SUPPORTS_ZBOOT_UART16550
1346 select SYS_SUPPORTS_ZBOOT
1348 config CPU_LOONGSON2
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_64BIT_KERNEL
1352 select CPU_SUPPORTS_HIGHMEM
1354 config SYS_HAS_CPU_LOONGSON2E
1357 config SYS_HAS_CPU_LOONGSON2F
1359 select CPU_SUPPORTS_CPUFREQ
1360 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1361 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1363 config SYS_HAS_CPU_MIPS32_R1
1366 config SYS_HAS_CPU_MIPS32_R2
1369 config SYS_HAS_CPU_MIPS64_R1
1372 config SYS_HAS_CPU_MIPS64_R2
1375 config SYS_HAS_CPU_R3000
1378 config SYS_HAS_CPU_TX39XX
1381 config SYS_HAS_CPU_VR41XX
1384 config SYS_HAS_CPU_R4300
1387 config SYS_HAS_CPU_R4X00
1390 config SYS_HAS_CPU_TX49XX
1393 config SYS_HAS_CPU_R5000
1396 config SYS_HAS_CPU_R5432
1399 config SYS_HAS_CPU_R5500
1402 config SYS_HAS_CPU_R6000
1405 config SYS_HAS_CPU_NEVADA
1408 config SYS_HAS_CPU_R8000
1411 config SYS_HAS_CPU_R10000
1414 config SYS_HAS_CPU_RM7000
1417 config SYS_HAS_CPU_RM9000
1420 config SYS_HAS_CPU_SB1
1423 config SYS_HAS_CPU_CAVIUM_OCTEON
1427 # CPU may reorder R->R, R->W, W->R, W->W
1428 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1430 config WEAK_ORDERING
1434 # CPU may reorder reads and writes beyond LL/SC
1435 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1437 config WEAK_REORDERING_BEYOND_LLSC
1442 # These two indicate any level of the MIPS32 and MIPS64 architecture
1446 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1450 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1453 # These two indicate the revision of the architecture, either Release 1 or Release 2
1457 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1461 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1463 config SYS_SUPPORTS_32BIT_KERNEL
1465 config SYS_SUPPORTS_64BIT_KERNEL
1467 config CPU_SUPPORTS_32BIT_KERNEL
1469 config CPU_SUPPORTS_64BIT_KERNEL
1471 config CPU_SUPPORTS_CPUFREQ
1473 config CPU_SUPPORTS_ADDRWINCFG
1475 config CPU_SUPPORTS_HUGEPAGES
1477 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1479 config MIPS_PGD_C0_CONTEXT
1481 default y if 64BIT && CPU_MIPSR2
1484 # Set to y for ptrace access to watch registers.
1486 config HARDWARE_WATCHPOINTS
1488 default y if CPU_MIPSR1 || CPU_MIPSR2
1494 prompt "Kernel code model"
1496 You should only select this option if you have a workload that
1497 actually benefits from 64-bit processing or if your machine has
1498 large memory. You will only be presented a single option in this
1499 menu if your system does not support both 32-bit and 64-bit kernels.
1502 bool "32-bit kernel"
1503 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1506 Select this option if you want to build a 32-bit kernel.
1508 bool "64-bit kernel"
1509 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1510 select HAVE_SYSCALL_WRAPPERS
1512 Select this option if you want to build a 64-bit kernel.
1517 prompt "Kernel page size"
1518 default PAGE_SIZE_4KB
1520 config PAGE_SIZE_4KB
1522 depends on !CPU_LOONGSON2
1524 This option select the standard 4kB Linux page size. On some
1525 R3000-family processors this is the only available page size. Using
1526 4kB page size will minimize memory consumption and is therefore
1527 recommended for low memory systems.
1529 config PAGE_SIZE_8KB
1531 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1533 Using 8kB page size will result in higher performance kernel at
1534 the price of higher memory consumption. This option is available
1535 only on R8000 and cnMIPS processors. Note that you will need a
1536 suitable Linux distribution to support this.
1538 config PAGE_SIZE_16KB
1540 depends on !CPU_R3000 && !CPU_TX39XX
1542 Using 16kB page size will result in higher performance kernel at
1543 the price of higher memory consumption. This option is available on
1544 all non-R3000 family processors. Note that you will need a suitable
1545 Linux distribution to support this.
1547 config PAGE_SIZE_32KB
1549 depends on CPU_CAVIUM_OCTEON
1551 Using 32kB page size will result in higher performance kernel at
1552 the price of higher memory consumption. This option is available
1553 only on cnMIPS cores. Note that you will need a suitable Linux
1554 distribution to support this.
1556 config PAGE_SIZE_64KB
1558 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1560 Using 64kB page size will result in higher performance kernel at
1561 the price of higher memory consumption. This option is available on
1562 all non-R3000 family processor. Not that at the time of this
1563 writing this option is still high experimental.
1570 config IP22_CPU_SCACHE
1575 # Support for a MIPS32 / MIPS64 style S-caches
1577 config MIPS_CPU_SCACHE
1581 config R5000_CPU_SCACHE
1585 config RM7000_CPU_SCACHE
1589 config SIBYTE_DMA_PAGEOPS
1590 bool "Use DMA to clear/copy pages"
1593 Instead of using the CPU to zero and copy pages, use a Data Mover
1594 channel. These DMA channels are otherwise unused by the standard
1595 SiByte Linux port. Seems to give a small performance benefit.
1597 config CPU_HAS_PREFETCH
1601 prompt "MIPS MT options"
1603 config MIPS_MT_DISABLED
1604 bool "Disable multithreading support."
1606 Use this option if your workload can't take advantage of
1607 MIPS hardware multithreading support. On systems that don't have
1608 the option of an MT-enabled processor this option will be the only
1609 option in this menu.
1612 bool "Use 1 TC on each available VPE for SMP"
1613 depends on SYS_SUPPORTS_MULTITHREADING
1614 select CPU_MIPSR2_IRQ_VI
1615 select CPU_MIPSR2_IRQ_EI
1617 select NR_CPUS_DEFAULT_2
1619 select SYS_SUPPORTS_SCHED_SMT if SMP
1620 select SYS_SUPPORTS_SMP
1623 This is a kernel model which is also known a VSMP or lately
1624 has been marketesed into SMVP.
1627 bool "SMTC: Use all TCs on all VPEs for SMP"
1628 depends on CPU_MIPS32_R2
1629 #depends on CPU_MIPS64_R2 # once there is hardware ...
1630 depends on SYS_SUPPORTS_MULTITHREADING
1631 select CPU_MIPSR2_IRQ_VI
1632 select CPU_MIPSR2_IRQ_EI
1634 select NR_CPUS_DEFAULT_8
1636 select SYS_SUPPORTS_SMP
1639 This is a kernel model which is known a SMTC or lately has been
1640 marketesed into SMVP.
1648 bool "SMT (multithreading) scheduler support"
1649 depends on SYS_SUPPORTS_SCHED_SMT
1652 SMT scheduler support improves the CPU scheduler's decision making
1653 when dealing with MIPS MT enabled cores at a cost of slightly
1654 increased overhead in some places. If unsure say N here.
1656 config SYS_SUPPORTS_SCHED_SMT
1660 config SYS_SUPPORTS_MULTITHREADING
1663 config MIPS_MT_FPAFF
1664 bool "Dynamic FPU affinity for FP-intensive threads"
1666 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1668 config MIPS_VPE_LOADER
1669 bool "VPE loader support."
1670 depends on SYS_SUPPORTS_MULTITHREADING
1671 select CPU_MIPSR2_IRQ_VI
1672 select CPU_MIPSR2_IRQ_EI
1675 Includes a loader for loading an elf relocatable object
1676 onto another VPE and running it.
1678 config MIPS_MT_SMTC_IM_BACKSTOP
1679 bool "Use per-TC register bits as backstop for inhibited IM bits"
1680 depends on MIPS_MT_SMTC
1683 To support multiple TC microthreads acting as "CPUs" within
1684 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1685 during interrupt handling. To support legacy drivers and interrupt
1686 controller management code, SMTC has a "backstop" to track and
1687 if necessary restore the interrupt mask. This has some performance
1688 impact on interrupt service overhead.
1690 config MIPS_MT_SMTC_IRQAFF
1691 bool "Support IRQ affinity API"
1692 depends on MIPS_MT_SMTC
1695 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1696 for SMTC Linux kernel. Requires platform support, of which
1697 an example can be found in the MIPS kernel i8259 and Malta
1698 platform code. Adds some overhead to interrupt dispatch, and
1699 should be used only if you know what you are doing.
1701 config MIPS_VPE_LOADER_TOM
1702 bool "Load VPE program into memory hidden from linux"
1703 depends on MIPS_VPE_LOADER
1706 The loader can use memory that is present but has been hidden from
1707 Linux using the kernel command line option "mem=xxMB". It's up to
1708 you to ensure the amount you put in the option and the space your
1709 program requires is less or equal to the amount physically present.
1711 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1712 config MIPS_VPE_APSP_API
1713 bool "Enable support for AP/SP API (RTLX)"
1714 depends on MIPS_VPE_LOADER
1717 config MIPS_APSP_KSPD
1719 depends on MIPS_VPE_APSP_API
1722 KSPD is a kernel daemon that accepts syscall requests from the SP
1723 side, actions them and returns the results. It also handles the
1724 "exit" syscall notifying other kernel modules the SP program is
1725 exiting. You probably want to say yes here.
1728 bool "MIPS CMP framework support"
1729 depends on SYS_SUPPORTS_MIPS_CMP
1731 select SYS_SUPPORTS_SMP
1732 select SYS_SUPPORTS_SCHED_SMT if SMP
1733 select WEAK_ORDERING
1736 This is a placeholder option for the GCMP work. It will need to
1737 be handled differently...
1739 config SB1_PASS_1_WORKAROUNDS
1741 depends on CPU_SB1_PASS_1
1744 config SB1_PASS_2_WORKAROUNDS
1746 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1749 config SB1_PASS_2_1_WORKAROUNDS
1751 depends on CPU_SB1 && CPU_SB1_PASS_2
1754 config 64BIT_PHYS_ADDR
1757 config ARCH_PHYS_ADDR_T_64BIT
1758 def_bool 64BIT_PHYS_ADDR
1760 config CPU_HAS_SMARTMIPS
1761 depends on SYS_SUPPORTS_SMARTMIPS
1762 bool "Support for the SmartMIPS ASE"
1764 SmartMIPS is a extension of the MIPS32 architecture aimed at
1765 increased security at both hardware and software level for
1766 smartcards. Enabling this option will allow proper use of the
1767 SmartMIPS instructions by Linux applications. However a kernel with
1768 this option will not work on a MIPS core without SmartMIPS core. If
1769 you don't know you probably don't have SmartMIPS and should say N
1776 # Vectored interrupt mode is an R2 feature
1778 config CPU_MIPSR2_IRQ_VI
1782 # Extended interrupt mode is an R2 feature
1784 config CPU_MIPSR2_IRQ_EI
1789 depends on !CPU_R3000
1792 config GENERIC_CLOCKEVENTS_BROADCAST
1798 config CPU_DADDI_WORKAROUNDS
1801 config CPU_R4000_WORKAROUNDS
1803 select CPU_R4400_WORKAROUNDS
1805 config CPU_R4400_WORKAROUNDS
1809 # Use the generic interrupt handling code in kernel/irq/:
1811 config GENERIC_HARDIRQS
1815 config GENERIC_IRQ_PROBE
1823 # - Highmem only makes sense for the 32-bit kernel.
1824 # - The current highmem code will only work properly on physically indexed
1825 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1826 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1827 # moment we protect the user and offer the highmem option only on machines
1828 # where it's known to be safe. This will not offer highmem on a few systems
1829 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1830 # indexed CPUs but we're playing safe.
1831 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1832 # know they might have memory configurations that could make use of highmem
1836 bool "High Memory Support"
1837 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1839 config CPU_SUPPORTS_HIGHMEM
1842 config SYS_SUPPORTS_HIGHMEM
1845 config SYS_SUPPORTS_SMARTMIPS
1848 config ARCH_FLATMEM_ENABLE
1850 depends on !NUMA && !CPU_LOONGSON2
1852 config ARCH_DISCONTIGMEM_ENABLE
1854 default y if SGI_IP27
1856 Say Y to support efficient handling of discontiguous physical memory,
1857 for architectures which are either NUMA (Non-Uniform Memory Access)
1858 or have huge holes in the physical address space for other reasons.
1859 See <file:Documentation/vm/numa> for more.
1861 config ARCH_POPULATES_NODE_MAP
1864 config ARCH_SPARSEMEM_ENABLE
1866 select SPARSEMEM_STATIC
1870 depends on SYS_SUPPORTS_NUMA
1872 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1873 Access). This option improves performance on systems with more
1874 than two nodes; on two node systems it is generally better to
1875 leave it disabled; on single node systems disable this option
1878 config SYS_SUPPORTS_NUMA
1884 depends on NEED_MULTIPLE_NODES
1889 bool "Multi-Processing support"
1890 depends on SYS_SUPPORTS_SMP
1892 select USE_GENERIC_SMP_HELPERS
1894 This enables support for systems with more than one CPU. If you have
1895 a system with only one CPU, like most personal computers, say N. If
1896 you have a system with more than one CPU, say Y.
1898 If you say N here, the kernel will run on single and multiprocessor
1899 machines, but will use only one CPU of a multiprocessor machine. If
1900 you say Y here, the kernel will run on many, but not all,
1901 singleprocessor machines. On a singleprocessor machine, the kernel
1902 will run faster if you say N here.
1904 People using multiprocessor machines who say Y here should also say
1905 Y to "Enhanced Real Time Clock Support", below.
1907 See also the SMP-HOWTO available at
1908 <http://www.tldp.org/docs.html#howto>.
1910 If you don't know what to do here, say N.
1915 config SYS_SUPPORTS_MIPS_CMP
1918 config SYS_SUPPORTS_SMP
1921 config NR_CPUS_DEFAULT_1
1924 config NR_CPUS_DEFAULT_2
1927 config NR_CPUS_DEFAULT_4
1930 config NR_CPUS_DEFAULT_8
1933 config NR_CPUS_DEFAULT_16
1936 config NR_CPUS_DEFAULT_32
1939 config NR_CPUS_DEFAULT_64
1943 int "Maximum number of CPUs (2-64)"
1944 range 1 64 if NR_CPUS_DEFAULT_1
1946 default "1" if NR_CPUS_DEFAULT_1
1947 default "2" if NR_CPUS_DEFAULT_2
1948 default "4" if NR_CPUS_DEFAULT_4
1949 default "8" if NR_CPUS_DEFAULT_8
1950 default "16" if NR_CPUS_DEFAULT_16
1951 default "32" if NR_CPUS_DEFAULT_32
1952 default "64" if NR_CPUS_DEFAULT_64
1954 This allows you to specify the maximum number of CPUs which this
1955 kernel will support. The maximum supported value is 32 for 32-bit
1956 kernel and 64 for 64-bit kernels; the minimum value which makes
1957 sense is 1 for Qemu (useful only for kernel debugging purposes)
1958 and 2 for all others.
1960 This is purely to save memory - each supported CPU adds
1961 approximately eight kilobytes to the kernel image. For best
1962 performance should round up your number of processors to the next
1965 source "kernel/time/Kconfig"
1968 # Timer Interrupt Frequency Configuration
1972 prompt "Timer frequency"
1975 Allows the configuration of the timer frequency.
1978 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1981 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1984 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1987 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1990 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1993 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1996 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2000 config SYS_SUPPORTS_48HZ
2003 config SYS_SUPPORTS_100HZ
2006 config SYS_SUPPORTS_128HZ
2009 config SYS_SUPPORTS_250HZ
2012 config SYS_SUPPORTS_256HZ
2015 config SYS_SUPPORTS_1000HZ
2018 config SYS_SUPPORTS_1024HZ
2021 config SYS_SUPPORTS_ARBIT_HZ
2023 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2024 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2025 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2026 !SYS_SUPPORTS_1024HZ
2031 default 100 if HZ_100
2032 default 128 if HZ_128
2033 default 250 if HZ_250
2034 default 256 if HZ_256
2035 default 1000 if HZ_1000
2036 default 1024 if HZ_1024
2038 source "kernel/Kconfig.preempt"
2040 config MIPS_INSANE_LARGE
2041 bool "Support for large 64-bit configurations"
2042 depends on CPU_R10000 && 64BIT
2044 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2045 previous 64-bit processors which only supported 40 bit / 1TB. If you
2046 need processes of more than 1TB virtual address space, say Y here.
2047 This will result in additional memory usage, so it is not
2048 recommended for normal users.
2051 bool "Kexec system call (EXPERIMENTAL)"
2052 depends on EXPERIMENTAL
2054 kexec is a system call that implements the ability to shutdown your
2055 current kernel, and to start another kernel. It is like a reboot
2056 but it is independent of the system firmware. And like a reboot
2057 you can start any kernel with it, not just Linux.
2059 The name comes from the similarity to the exec system call.
2061 It is an ongoing process to be certain the hardware in a machine
2062 is properly shutdown, so do not be surprised if this code does not
2063 initially work for you. It may help to enable device hotplugging
2064 support. As of this writing the exact hardware interface is
2065 strongly in flux, so no good recommendation can be made.
2068 bool "Enable seccomp to safely compute untrusted bytecode"
2072 This kernel feature is useful for number crunching applications
2073 that may need to compute untrusted bytecode during their
2074 execution. By using pipes or other transports made available to
2075 the process as file descriptors supporting the read/write
2076 syscalls, it's possible to isolate those applications in
2077 their own address space using seccomp. Once seccomp is
2078 enabled via /proc/<pid>/seccomp, it cannot be disabled
2079 and the task is only allowed to execute a few safe syscalls
2080 defined by each seccomp mode.
2082 If unsure, say Y. Only embedded should say N here.
2086 config LOCKDEP_SUPPORT
2090 config STACKTRACE_SUPPORT
2094 source "init/Kconfig"
2096 source "kernel/Kconfig.freezer"
2098 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2106 bool "Support for PCI controller"
2107 depends on HW_HAS_PCI
2110 Find out whether you have a PCI motherboard. PCI is the name of a
2111 bus system, i.e. the way the CPU talks to the other stuff inside
2112 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2118 source "drivers/pci/Kconfig"
2121 # ISA support is now enabled via select. Too many systems still have the one
2122 # or other ISA chip on the board that users don't know about so don't expect
2123 # users to choose the right thing ...
2130 depends on HW_HAS_EISA
2132 select GENERIC_ISA_DMA
2134 The Extended Industry Standard Architecture (EISA) bus was
2135 developed as an open alternative to the IBM MicroChannel bus.
2137 The EISA bus provided some of the features of the IBM MicroChannel
2138 bus while maintaining backward compatibility with cards made for
2139 the older ISA bus. The EISA bus saw limited use between 1988 and
2140 1995 when it was made obsolete by the PCI bus.
2142 Say Y here if you are building a kernel for an EISA-based machine.
2146 source "drivers/eisa/Kconfig"
2149 bool "TURBOchannel support"
2150 depends on MACH_DECSTATION
2152 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2153 processors. Documentation on writing device drivers for TurboChannel
2155 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2158 # bool "Access.Bus support"
2167 select MIPS_EXTERNAL_TIMER
2172 source "drivers/pcmcia/Kconfig"
2174 source "drivers/pci/hotplug/Kconfig"
2178 menu "Executable file formats"
2180 source "fs/Kconfig.binfmt"
2185 config MIPS32_COMPAT
2186 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2189 Select this option if you want Linux/MIPS 32-bit binary
2190 compatibility. Since all software available for Linux/MIPS is
2191 currently 32-bit you should say Y here.
2195 depends on MIPS32_COMPAT
2198 config SYSVIPC_COMPAT
2200 depends on COMPAT && SYSVIPC
2204 bool "Kernel support for o32 binaries"
2205 depends on MIPS32_COMPAT
2207 Select this option if you want to run o32 binaries. These are pure
2208 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2209 existing binaries are in this format.
2214 bool "Kernel support for n32 binaries"
2215 depends on MIPS32_COMPAT
2217 Select this option if you want to run n32 binaries. These are
2218 64-bit binaries using 32-bit quantities for addressing and certain
2219 data that would normally be 64-bit. They are used in special
2226 default y if MIPS32_O32 || MIPS32_N32
2230 menu "Power management options"
2232 config ARCH_HIBERNATION_POSSIBLE
2234 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2236 config ARCH_SUSPEND_POSSIBLE
2238 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2240 source "kernel/power/Kconfig"
2244 source "arch/mips/kernel/cpufreq/Kconfig"
2246 source "net/Kconfig"
2248 source "drivers/Kconfig"
2252 source "arch/mips/Kconfig.debug"
2254 source "security/Kconfig"
2256 source "crypto/Kconfig"
2258 source "lib/Kconfig"