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
14 select HAVE_KRETPROBES
15 select RTC_LIB if !MACH_LOONGSON
17 menu "Machine selection"
27 bool "Alchemy processor based machines"
28 select 64BIT_PHYS_ADDR
32 select SYS_HAS_CPU_MIPS32_R1
33 select SYS_SUPPORTS_32BIT_KERNEL
34 select SYS_SUPPORTS_APM_EMULATION
36 select ARCH_WANT_OPTIONAL_GPIOLIB
37 select SYS_SUPPORTS_ZBOOT
40 bool "Texas Instruments AR7"
42 select DMA_NONCOHERENT
48 select SYS_HAS_CPU_MIPS32_R1
49 select SYS_HAS_EARLY_PRINTK
50 select SYS_SUPPORTS_32BIT_KERNEL
51 select SYS_SUPPORTS_LITTLE_ENDIAN
52 select SYS_SUPPORTS_ZBOOT_UART16550
53 select ARCH_REQUIRE_GPIOLIB
57 Support for the Texas Instruments AR7 System-on-a-Chip
58 family: TNETD7100, 7200 and 7300.
61 bool "Broadcom BCM47XX based boards"
64 select DMA_NONCOHERENT
67 select SYS_HAS_CPU_MIPS32_R1
68 select SYS_SUPPORTS_32BIT_KERNEL
69 select SYS_SUPPORTS_LITTLE_ENDIAN
71 select SSB_DRIVER_MIPS
72 select SSB_DRIVER_EXTIF
74 select SSB_B43_PCI_BRIDGE if PCI
75 select SSB_PCICORE_HOSTMODE if PCI
77 select SYS_HAS_EARLY_PRINTK
80 Support for BCM47XX based boards
83 bool "Broadcom BCM63XX based boards"
86 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_SUPPORTS_32BIT_KERNEL
90 select SYS_SUPPORTS_BIG_ENDIAN
91 select SYS_HAS_EARLY_PRINTK
93 select ARCH_REQUIRE_GPIOLIB
95 Support for BCM63XX based boards
102 select DMA_NONCOHERENT
108 select PCI_GT64XXX_PCI0
110 select SYS_HAS_CPU_NEVADA
111 select SYS_HAS_EARLY_PRINTK
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_64BIT_KERNEL
114 select SYS_SUPPORTS_LITTLE_ENDIAN
116 config MACH_DECSTATION
123 select CPU_DADDI_WORKAROUNDS if 64BIT
124 select CPU_R4000_WORKAROUNDS if 64BIT
125 select CPU_R4400_WORKAROUNDS if 64BIT
126 select DMA_NONCOHERENT
129 select SYS_HAS_CPU_R3000
130 select SYS_HAS_CPU_R4X00
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
133 select SYS_SUPPORTS_LITTLE_ENDIAN
134 select SYS_SUPPORTS_128HZ
135 select SYS_SUPPORTS_256HZ
136 select SYS_SUPPORTS_1024HZ
138 This enables support for DEC's MIPS based workstations. For details
139 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
140 DECstation porting pages on <http://decstation.unix-ag.org/>.
142 If you have one of the following DECstation Models you definitely
143 want to choose R4xx0 for the CPU Type:
150 otherwise choose R3000.
153 bool "Jazz family of machines"
156 select ARCH_MAY_HAVE_PC_FDC
159 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
160 select GENERIC_ISA_DMA
165 select SYS_HAS_CPU_R4X00
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
168 select SYS_SUPPORTS_100HZ
170 This a family of machines based on the MIPS R4030 chipset which was
171 used by several vendors to build RISC/os and Windows NT workstations.
172 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
173 Olivetti M700-10 workstations.
176 bool "Ingenic JZ4740 based machines"
177 select SYS_HAS_CPU_MIPS32_R1
178 select SYS_SUPPORTS_32BIT_KERNEL
179 select SYS_SUPPORTS_LITTLE_ENDIAN
180 select DMA_NONCOHERENT
183 select ARCH_REQUIRE_GPIOLIB
184 select SYS_HAS_EARLY_PRINTK
188 bool "LASAT Networks platforms"
191 select DMA_NONCOHERENT
192 select SYS_HAS_EARLY_PRINTK
195 select PCI_GT64XXX_PCI0
197 select R5000_CPU_SCACHE
198 select SYS_HAS_CPU_R5000
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
201 select SYS_SUPPORTS_LITTLE_ENDIAN
204 bool "Loongson family of machines"
205 select SYS_SUPPORTS_ZBOOT
207 This enables the support of Loongson family of machines.
209 Loongson is a family of general-purpose MIPS-compatible CPUs.
210 developed at Institute of Computing Technology (ICT),
211 Chinese Academy of Sciences (CAS) in the People's Republic
212 of China. The chief architect is Professor Weiwu Hu.
215 bool "MIPS Malta board"
216 select ARCH_MAY_HAVE_PC_FDC
221 select DMA_NONCOHERENT
222 select GENERIC_ISA_DMA
228 select MIPS_BOARDS_GEN
230 select MIPS_CPU_SCACHE
231 select PCI_GT64XXX_PCI0
234 select SYS_HAS_CPU_MIPS32_R1
235 select SYS_HAS_CPU_MIPS32_R2
236 select SYS_HAS_CPU_MIPS64_R1
237 select SYS_HAS_CPU_NEVADA
238 select SYS_HAS_CPU_RM7000
239 select SYS_HAS_EARLY_PRINTK
240 select SYS_SUPPORTS_32BIT_KERNEL
241 select SYS_SUPPORTS_64BIT_KERNEL
242 select SYS_SUPPORTS_BIG_ENDIAN
243 select SYS_SUPPORTS_LITTLE_ENDIAN
244 select SYS_SUPPORTS_MIPS_CMP
245 select SYS_SUPPORTS_MULTITHREADING
246 select SYS_SUPPORTS_SMARTMIPS
247 select SYS_SUPPORTS_ZBOOT
249 This enables support for the MIPS Technologies Malta evaluation
253 bool 'MIPS simulator (MIPSsim)'
256 select DMA_NONCOHERENT
257 select SYS_HAS_EARLY_PRINTK
260 select SYS_HAS_CPU_MIPS32_R1
261 select SYS_HAS_CPU_MIPS32_R2
262 select SYS_HAS_EARLY_PRINTK
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_BIG_ENDIAN
265 select SYS_SUPPORTS_MULTITHREADING
266 select SYS_SUPPORTS_LITTLE_ENDIAN
268 This option enables support for MIPS Technologies MIPSsim software
272 bool "NEC EMMA2RH Mark-eins board"
276 This enables support for the NEC Electronics Mark-eins boards.
279 bool "NEC VR4100 series based machines"
282 select SYS_HAS_CPU_VR41XX
283 select ARCH_REQUIRE_GPIOLIB
286 bool "NXP STB220 board"
289 Support for NXP Semiconductors STB220 Development Board.
296 Support for NXP Semiconductors STB225 Development Board.
299 bool "NXP PNX8550 based JBS board"
301 select SYS_SUPPORTS_LITTLE_ENDIAN
303 config PNX8550_STB810
304 bool "NXP PNX8550 based STB810 board"
306 select SYS_SUPPORTS_LITTLE_ENDIAN
309 bool "PMC-Sierra MSP chipsets"
310 depends on EXPERIMENTAL
311 select DMA_NONCOHERENT
313 select NO_EXCEPT_FILL
315 select SYS_HAS_CPU_MIPS32_R1
316 select SYS_HAS_CPU_MIPS32_R2
317 select SYS_SUPPORTS_32BIT_KERNEL
318 select SYS_SUPPORTS_BIG_ENDIAN
321 select SERIAL_8250_CONSOLE
323 This adds support for the PMC-Sierra family of Multi-Service
324 Processor System-On-A-Chips. These parts include a number
325 of integrated peripherals, interfaces and DSPs in addition to
326 a variety of MIPS cores.
329 bool "PMC-Sierra Yosemite eval board"
338 select SYS_HAS_CPU_RM9000
339 select SYS_HAS_EARLY_PRINTK
340 select SYS_SUPPORTS_32BIT_KERNEL
341 select SYS_SUPPORTS_64BIT_KERNEL
342 select SYS_SUPPORTS_BIG_ENDIAN
343 select SYS_SUPPORTS_HIGHMEM
344 select SYS_SUPPORTS_SMP
346 Yosemite is an evaluation board for the RM9000x2 processor
347 manufactured by PMC-Sierra.
353 select CPU_MIPSR2_IRQ_VI
354 select CPU_MIPSR2_IRQ_EI
356 select DMA_NONCOHERENT
358 select SYS_HAS_EARLY_PRINTK
359 select SYS_HAS_CPU_MIPS32_R2
360 select SYS_SUPPORTS_32BIT_KERNEL
361 select SYS_SUPPORTS_BIG_ENDIAN
362 select SYS_SUPPORTS_HIGHMEM
363 select USB_OHCI_LITTLE_ENDIAN
365 This enables support for the Cisco PowerTV Platform.
368 bool "SGI IP22 (Indy/Indigo2)"
374 select DEFAULT_SGI_PARTITION
375 select DMA_NONCOHERENT
379 select IP22_CPU_SCACHE
381 select GENERIC_ISA_DMA_SUPPORT_BROKEN
383 select SGI_HAS_INDYDOG
389 select SYS_HAS_CPU_R4X00
390 select SYS_HAS_CPU_R5000
392 # Disable EARLY_PRINTK for now since it leads to overwritten prom
393 # memory during early boot on some machines.
395 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
396 # for a more details discussion
398 # select SYS_HAS_EARLY_PRINTK
399 select SYS_SUPPORTS_32BIT_KERNEL
400 select SYS_SUPPORTS_64BIT_KERNEL
401 select SYS_SUPPORTS_BIG_ENDIAN
403 This are the SGI Indy, Challenge S and Indigo2, as well as certain
404 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
405 that runs on these, say Y here.
408 bool "SGI IP27 (Origin200/2000)"
412 select DEFAULT_SGI_PARTITION
414 select SYS_HAS_EARLY_PRINTK
416 select NR_CPUS_DEFAULT_64
417 select SYS_HAS_CPU_R10000
418 select SYS_SUPPORTS_64BIT_KERNEL
419 select SYS_SUPPORTS_BIG_ENDIAN
420 select SYS_SUPPORTS_NUMA
421 select SYS_SUPPORTS_SMP
423 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
424 workstations. To compile a Linux kernel that runs on these, say Y
428 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
429 depends on EXPERIMENTAL
435 select DEFAULT_SGI_PARTITION
436 select DMA_NONCOHERENT
437 select GENERIC_ISA_DMA_SUPPORT_BROKEN
443 select SGI_HAS_INDYDOG
449 select SYS_HAS_CPU_R10000
451 # Disable EARLY_PRINTK for now since it leads to overwritten prom
452 # memory during early boot on some machines.
454 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
455 # for a more details discussion
457 # select SYS_HAS_EARLY_PRINTK
458 select SYS_SUPPORTS_64BIT_KERNEL
459 select SYS_SUPPORTS_BIG_ENDIAN
461 This is the SGI Indigo2 with R10000 processor. To compile a Linux
462 kernel that runs on these, say Y here.
471 select DMA_NONCOHERENT
474 select R5000_CPU_SCACHE
475 select RM7000_CPU_SCACHE
476 select SYS_HAS_CPU_R5000
477 select SYS_HAS_CPU_R10000 if BROKEN
478 select SYS_HAS_CPU_RM7000
479 select SYS_HAS_CPU_NEVADA
480 select SYS_SUPPORTS_64BIT_KERNEL
481 select SYS_SUPPORTS_BIG_ENDIAN
483 If you want this kernel to run on SGI O2 workstation, say Y here.
486 bool "Sibyte BCM91120C-CRhine"
487 depends on EXPERIMENTAL
490 select SIBYTE_BCM1120
492 select SYS_HAS_CPU_SB1
493 select SYS_SUPPORTS_BIG_ENDIAN
494 select SYS_SUPPORTS_LITTLE_ENDIAN
497 bool "Sibyte BCM91120x-Carmel"
498 depends on EXPERIMENTAL
501 select SIBYTE_BCM1120
503 select SYS_HAS_CPU_SB1
504 select SYS_SUPPORTS_BIG_ENDIAN
505 select SYS_SUPPORTS_LITTLE_ENDIAN
508 bool "Sibyte BCM91125C-CRhone"
509 depends on EXPERIMENTAL
512 select SIBYTE_BCM1125
514 select SYS_HAS_CPU_SB1
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_HIGHMEM
517 select SYS_SUPPORTS_LITTLE_ENDIAN
520 bool "Sibyte BCM91125E-Rhone"
521 depends on EXPERIMENTAL
524 select SIBYTE_BCM1125H
526 select SYS_HAS_CPU_SB1
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_LITTLE_ENDIAN
531 bool "Sibyte BCM91250A-SWARM"
534 select HAVE_PATA_PLATFORM
535 select NR_CPUS_DEFAULT_2
538 select SYS_HAS_CPU_SB1
539 select SYS_SUPPORTS_BIG_ENDIAN
540 select SYS_SUPPORTS_HIGHMEM
541 select SYS_SUPPORTS_LITTLE_ENDIAN
542 select ZONE_DMA32 if 64BIT
544 config SIBYTE_LITTLESUR
545 bool "Sibyte BCM91250C2-LittleSur"
546 depends on EXPERIMENTAL
549 select HAVE_PATA_PLATFORM
550 select NR_CPUS_DEFAULT_2
553 select SYS_HAS_CPU_SB1
554 select SYS_SUPPORTS_BIG_ENDIAN
555 select SYS_SUPPORTS_HIGHMEM
556 select SYS_SUPPORTS_LITTLE_ENDIAN
558 config SIBYTE_SENTOSA
559 bool "Sibyte BCM91250E-Sentosa"
560 depends on EXPERIMENTAL
563 select NR_CPUS_DEFAULT_2
566 select SYS_HAS_CPU_SB1
567 select SYS_SUPPORTS_BIG_ENDIAN
568 select SYS_SUPPORTS_LITTLE_ENDIAN
571 bool "Sibyte BCM91480B-BigSur"
574 select NR_CPUS_DEFAULT_4
575 select SIBYTE_BCM1x80
577 select SYS_HAS_CPU_SB1
578 select SYS_SUPPORTS_BIG_ENDIAN
579 select SYS_SUPPORTS_HIGHMEM
580 select SYS_SUPPORTS_LITTLE_ENDIAN
581 select ZONE_DMA32 if 64BIT
584 bool "SNI RM200/300/400"
585 select ARC if CPU_LITTLE_ENDIAN
586 select ARC32 if CPU_LITTLE_ENDIAN
587 select SNIPROM if CPU_BIG_ENDIAN
588 select ARCH_MAY_HAVE_PC_FDC
592 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
593 select DMA_NONCOHERENT
594 select GENERIC_ISA_DMA
601 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
602 select SYS_HAS_CPU_R4X00
603 select SYS_HAS_CPU_R5000
604 select SYS_HAS_CPU_R10000
605 select R5000_CPU_SCACHE
606 select SYS_HAS_EARLY_PRINTK
607 select SYS_SUPPORTS_32BIT_KERNEL
608 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
609 select SYS_SUPPORTS_BIG_ENDIAN
610 select SYS_SUPPORTS_HIGHMEM
611 select SYS_SUPPORTS_LITTLE_ENDIAN
613 The SNI RM200/300/400 are MIPS-based machines manufactured by
614 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
615 Technology and now in turn merged with Fujitsu. Say Y here to
616 support this machine type.
619 bool "Toshiba TX39 series based machines"
622 bool "Toshiba TX49 series based machines"
624 config MIKROTIK_RB532
625 bool "Mikrotik RB532 boards"
628 select DMA_NONCOHERENT
631 select SYS_HAS_CPU_MIPS32_R1
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_LITTLE_ENDIAN
636 select ARCH_REQUIRE_GPIOLIB
638 Support the Mikrotik(tm) RouterBoard 532 series,
639 based on the IDT RC32434 SoC.
642 bool "Wind River PPMC board"
647 select DMA_NONCOHERENT
649 select PCI_GT64XXX_PCI0
651 select SYS_HAS_CPU_MIPS32_R1
652 select SYS_HAS_CPU_MIPS32_R2
653 select SYS_HAS_CPU_MIPS64_R1
654 select SYS_HAS_CPU_NEVADA
655 select SYS_HAS_CPU_RM7000
656 select SYS_SUPPORTS_32BIT_KERNEL
657 select SYS_SUPPORTS_64BIT_KERNEL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_LITTLE_ENDIAN
661 This enables support for the Wind River MIPS32 4KC PPMC evaluation
662 board, which is based on GT64120 bridge chip.
664 config CAVIUM_OCTEON_SIMULATOR
665 bool "Cavium Networks Octeon Simulator"
667 select 64BIT_PHYS_ADDR
669 select SYS_SUPPORTS_64BIT_KERNEL
670 select SYS_SUPPORTS_BIG_ENDIAN
671 select SYS_SUPPORTS_HIGHMEM
672 select SYS_SUPPORTS_HOTPLUG_CPU
673 select SYS_HAS_CPU_CAVIUM_OCTEON
675 The Octeon simulator is software performance model of the Cavium
676 Octeon Processor. It supports simulating Octeon processors on x86
679 config CAVIUM_OCTEON_REFERENCE_BOARD
680 bool "Cavium Networks Octeon reference board"
682 select 64BIT_PHYS_ADDR
684 select SYS_SUPPORTS_64BIT_KERNEL
685 select SYS_SUPPORTS_BIG_ENDIAN
686 select SYS_SUPPORTS_HIGHMEM
687 select SYS_SUPPORTS_HOTPLUG_CPU
688 select SYS_HAS_EARLY_PRINTK
689 select SYS_HAS_CPU_CAVIUM_OCTEON
692 select ARCH_SUPPORTS_MSI
694 This option supports all of the Octeon reference boards from Cavium
695 Networks. It builds a kernel that dynamically determines the Octeon
696 CPU type and supports all known board reference implementations.
697 Some of the supported boards are:
704 Say Y here for most Octeon reference boards.
708 source "arch/mips/alchemy/Kconfig"
709 source "arch/mips/bcm63xx/Kconfig"
710 source "arch/mips/jazz/Kconfig"
711 source "arch/mips/jz4740/Kconfig"
712 source "arch/mips/lasat/Kconfig"
713 source "arch/mips/pmc-sierra/Kconfig"
714 source "arch/mips/powertv/Kconfig"
715 source "arch/mips/sgi-ip27/Kconfig"
716 source "arch/mips/sibyte/Kconfig"
717 source "arch/mips/txx9/Kconfig"
718 source "arch/mips/vr41xx/Kconfig"
719 source "arch/mips/cavium-octeon/Kconfig"
720 source "arch/mips/loongson/Kconfig"
724 config RWSEM_GENERIC_SPINLOCK
728 config RWSEM_XCHGADD_ALGORITHM
731 config ARCH_HAS_ILOG2_U32
735 config ARCH_HAS_ILOG2_U64
739 config ARCH_SUPPORTS_OPROFILE
741 default y if !MIPS_MT_SMTC
743 config GENERIC_FIND_NEXT_BIT
747 config GENERIC_HWEIGHT
751 config GENERIC_CALIBRATE_DELAY
755 config GENERIC_CLOCKEVENTS
759 config GENERIC_CMOS_UPDATE
763 config SCHED_OMIT_FRAME_POINTER
767 config GENERIC_HARDIRQS_NO__DO_IRQ
771 # Select some configuration options automatically based on user selections.
776 config ARCH_MAY_HAVE_PC_FDC
825 select ARCH_REQUIRE_GPIOLIB
834 config DMA_NONCOHERENT
836 select NEED_DMA_MAP_STATE
838 config NEED_DMA_MAP_STATE
841 config SYS_HAS_EARLY_PRINTK
845 bool "Support for hot-pluggable CPUs"
846 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
848 Say Y here to allow turning CPUs off and on. CPUs can be
849 controlled through /sys/devices/system/cpu.
850 (Note: power management support will enable this option
851 automatically on SMP systems. )
852 Say N if you want to disable CPU hotplug.
854 config SYS_SUPPORTS_HOTPLUG_CPU
869 config MIPS_DISABLE_OBSOLETE_IDE
878 config GENERIC_ISA_DMA
880 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
882 config GENERIC_ISA_DMA_SUPPORT_BROKEN
884 select GENERIC_ISA_DMA
890 # Endianess selection. Sufficiently obscure so many users don't know what to
891 # answer,so we try hard to limit the available choices. Also the use of a
892 # choice statement should be more obvious to the user.
895 prompt "Endianess selection"
897 Some MIPS machines can be configured for either little or big endian
898 byte order. These modes require different kernels and a different
899 Linux distribution. In general there is one preferred byteorder for a
900 particular system but some systems are just as commonly used in the
901 one or the other endianness.
903 config CPU_BIG_ENDIAN
905 depends on SYS_SUPPORTS_BIG_ENDIAN
907 config CPU_LITTLE_ENDIAN
909 depends on SYS_SUPPORTS_LITTLE_ENDIAN
917 config SYS_SUPPORTS_APM_EMULATION
920 config SYS_SUPPORTS_BIG_ENDIAN
923 config SYS_SUPPORTS_LITTLE_ENDIAN
926 config SYS_SUPPORTS_HUGETLBFS
928 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
955 config IRQ_CPU_OCTEON
958 config MIPS_BOARDS_GEN
961 config PCI_GT64XXX_PCI0
964 config NO_EXCEPT_FILL
975 select DMA_NONCOHERENT
978 select SYS_HAS_CPU_R5500
979 select SYS_SUPPORTS_32BIT_KERNEL
980 select SYS_SUPPORTS_64BIT_KERNEL
981 select SYS_SUPPORTS_BIG_ENDIAN
988 select DMA_NONCOHERENT
989 select SYS_HAS_CPU_MIPS32_R2
990 select SYS_SUPPORTS_32BIT_KERNEL
991 select SYS_SUPPORTS_LITTLE_ENDIAN
992 select SYS_SUPPORTS_BIG_ENDIAN
994 select CPU_MIPSR2_IRQ_VI
1006 select DMA_NONCOHERENT
1008 select SYS_HAS_CPU_MIPS32_R1
1009 select SYS_HAS_EARLY_PRINTK
1010 select SYS_SUPPORTS_32BIT_KERNEL
1013 config SWAP_IO_SPACE
1016 config SERIAL_RM9000
1019 config SGI_HAS_INDYDOG
1031 config SGI_HAS_ZILOG
1034 config SGI_HAS_I8042
1037 config DEFAULT_SGI_PARTITION
1049 config MIPS_L1_CACHE_SHIFT
1051 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1052 default "6" if MIPS_CPU_SCACHE
1053 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1056 config HAVE_STD_PC_SERIAL_PORT
1060 bool "ARC console support"
1061 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1065 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1070 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1079 menu "CPU selection"
1085 config CPU_LOONGSON2E
1087 depends on SYS_HAS_CPU_LOONGSON2E
1088 select CPU_LOONGSON2
1090 The Loongson 2E processor implements the MIPS III instruction set
1091 with many extensions.
1093 It has an internal FPGA northbridge, which is compatiable to
1096 config CPU_LOONGSON2F
1098 depends on SYS_HAS_CPU_LOONGSON2F
1099 select CPU_LOONGSON2
1101 select ARCH_REQUIRE_GPIOLIB
1103 The Loongson 2F processor implements the MIPS III instruction set
1104 with many extensions.
1106 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1107 have a similar programming interface with FPGA northbridge used in
1110 config CPU_MIPS32_R1
1111 bool "MIPS32 Release 1"
1112 depends on SYS_HAS_CPU_MIPS32_R1
1113 select CPU_HAS_PREFETCH
1114 select CPU_SUPPORTS_32BIT_KERNEL
1115 select CPU_SUPPORTS_HIGHMEM
1117 Choose this option to build a kernel for release 1 or later of the
1118 MIPS32 architecture. Most modern embedded systems with a 32-bit
1119 MIPS processor are based on a MIPS32 processor. If you know the
1120 specific type of processor in your system, choose those that one
1121 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1122 Release 2 of the MIPS32 architecture is available since several
1123 years so chances are you even have a MIPS32 Release 2 processor
1124 in which case you should choose CPU_MIPS32_R2 instead for better
1127 config CPU_MIPS32_R2
1128 bool "MIPS32 Release 2"
1129 depends on SYS_HAS_CPU_MIPS32_R2
1130 select CPU_HAS_PREFETCH
1131 select CPU_SUPPORTS_32BIT_KERNEL
1132 select CPU_SUPPORTS_HIGHMEM
1134 Choose this option to build a kernel for release 2 or later of the
1135 MIPS32 architecture. Most modern embedded systems with a 32-bit
1136 MIPS processor are based on a MIPS32 processor. If you know the
1137 specific type of processor in your system, choose those that one
1138 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1140 config CPU_MIPS64_R1
1141 bool "MIPS64 Release 1"
1142 depends on SYS_HAS_CPU_MIPS64_R1
1143 select CPU_HAS_PREFETCH
1144 select CPU_SUPPORTS_32BIT_KERNEL
1145 select CPU_SUPPORTS_64BIT_KERNEL
1146 select CPU_SUPPORTS_HIGHMEM
1147 select CPU_SUPPORTS_HUGEPAGES
1149 Choose this option to build a kernel for release 1 or later of the
1150 MIPS64 architecture. Many modern embedded systems with a 64-bit
1151 MIPS processor are based on a MIPS64 processor. If you know the
1152 specific type of processor in your system, choose those that one
1153 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1154 Release 2 of the MIPS64 architecture is available since several
1155 years so chances are you even have a MIPS64 Release 2 processor
1156 in which case you should choose CPU_MIPS64_R2 instead for better
1159 config CPU_MIPS64_R2
1160 bool "MIPS64 Release 2"
1161 depends on SYS_HAS_CPU_MIPS64_R2
1162 select CPU_HAS_PREFETCH
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1165 select CPU_SUPPORTS_HIGHMEM
1166 select CPU_SUPPORTS_HUGEPAGES
1168 Choose this option to build a kernel for release 2 or later of the
1169 MIPS64 architecture. Many modern embedded systems with a 64-bit
1170 MIPS processor are based on a MIPS64 processor. If you know the
1171 specific type of processor in your system, choose those that one
1172 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1176 depends on SYS_HAS_CPU_R3000
1178 select CPU_SUPPORTS_32BIT_KERNEL
1179 select CPU_SUPPORTS_HIGHMEM
1181 Please make sure to pick the right CPU type. Linux/MIPS is not
1182 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1183 *not* work on R4000 machines and vice versa. However, since most
1184 of the supported machines have an R4000 (or similar) CPU, R4x00
1185 might be a safe bet. If the resulting kernel does not work,
1186 try to recompile with R3000.
1190 depends on SYS_HAS_CPU_TX39XX
1191 select CPU_SUPPORTS_32BIT_KERNEL
1195 depends on SYS_HAS_CPU_VR41XX
1196 select CPU_SUPPORTS_32BIT_KERNEL
1197 select CPU_SUPPORTS_64BIT_KERNEL
1199 The options selects support for the NEC VR4100 series of processors.
1200 Only choose this option if you have one of these processors as a
1201 kernel built with this option will not run on any other type of
1202 processor or vice versa.
1206 depends on SYS_HAS_CPU_R4300
1207 select CPU_SUPPORTS_32BIT_KERNEL
1208 select CPU_SUPPORTS_64BIT_KERNEL
1210 MIPS Technologies R4300-series processors.
1214 depends on SYS_HAS_CPU_R4X00
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1218 MIPS Technologies R4000-series processors other than 4300, including
1219 the R4000, R4400, R4600, and 4700.
1223 depends on SYS_HAS_CPU_TX49XX
1224 select CPU_HAS_PREFETCH
1225 select CPU_SUPPORTS_32BIT_KERNEL
1226 select CPU_SUPPORTS_64BIT_KERNEL
1230 depends on SYS_HAS_CPU_R5000
1231 select CPU_SUPPORTS_32BIT_KERNEL
1232 select CPU_SUPPORTS_64BIT_KERNEL
1234 MIPS Technologies R5000-series processors other than the Nevada.
1238 depends on SYS_HAS_CPU_R5432
1239 select CPU_SUPPORTS_32BIT_KERNEL
1240 select CPU_SUPPORTS_64BIT_KERNEL
1244 depends on SYS_HAS_CPU_R5500
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_64BIT_KERNEL
1247 select CPU_SUPPORTS_HUGEPAGES
1249 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1254 depends on EXPERIMENTAL
1255 depends on SYS_HAS_CPU_R6000
1256 select CPU_SUPPORTS_32BIT_KERNEL
1258 MIPS Technologies R6000 and R6000A series processors. Note these
1259 processors are extremely rare and the support for them is incomplete.
1263 depends on SYS_HAS_CPU_NEVADA
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_64BIT_KERNEL
1267 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1271 depends on EXPERIMENTAL
1272 depends on SYS_HAS_CPU_R8000
1273 select CPU_HAS_PREFETCH
1274 select CPU_SUPPORTS_64BIT_KERNEL
1276 MIPS Technologies R8000 processors. Note these processors are
1277 uncommon and the support for them is incomplete.
1281 depends on SYS_HAS_CPU_R10000
1282 select CPU_HAS_PREFETCH
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select CPU_SUPPORTS_HIGHMEM
1287 MIPS Technologies R10000-series processors.
1291 depends on SYS_HAS_CPU_RM7000
1292 select CPU_HAS_PREFETCH
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select CPU_SUPPORTS_HIGHMEM
1299 depends on SYS_HAS_CPU_RM9000
1300 select CPU_HAS_PREFETCH
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1303 select CPU_SUPPORTS_HIGHMEM
1304 select WEAK_ORDERING
1308 depends on SYS_HAS_CPU_SB1
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1311 select CPU_SUPPORTS_HIGHMEM
1312 select WEAK_ORDERING
1314 config CPU_CAVIUM_OCTEON
1315 bool "Cavium Octeon processor"
1316 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1318 select IRQ_CPU_OCTEON
1319 select CPU_HAS_PREFETCH
1320 select CPU_SUPPORTS_64BIT_KERNEL
1321 select SYS_SUPPORTS_SMP
1322 select NR_CPUS_DEFAULT_16
1323 select WEAK_ORDERING
1324 select CPU_SUPPORTS_HIGHMEM
1325 select CPU_SUPPORTS_HUGEPAGES
1327 The Cavium Octeon processor is a highly integrated chip containing
1328 many ethernet hardware widgets for networking tasks. The processor
1329 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1330 Full details can be found at http://www.caviumnetworks.com.
1335 config CPU_NOP_WORKAROUNDS
1338 config CPU_JUMP_WORKAROUNDS
1341 config CPU_LOONGSON2F_WORKAROUNDS
1342 bool "Loongson 2F Workarounds"
1344 select CPU_NOP_WORKAROUNDS
1345 select CPU_JUMP_WORKAROUNDS
1347 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1348 require workarounds. Without workarounds the system may hang
1349 unexpectedly. For more information please refer to the gas
1350 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1352 Loongson 2F03 and later have fixed these issues and no workarounds
1353 are needed. The workarounds have no significant side effect on them
1354 but may decrease the performance of the system so this option should
1355 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1358 If unsure, please say Y.
1359 endif # CPU_LOONGSON2F
1361 config SYS_SUPPORTS_ZBOOT
1363 select HAVE_KERNEL_GZIP
1364 select HAVE_KERNEL_BZIP2
1365 select HAVE_KERNEL_LZMA
1366 select HAVE_KERNEL_LZO
1368 config SYS_SUPPORTS_ZBOOT_UART16550
1370 select SYS_SUPPORTS_ZBOOT
1372 config CPU_LOONGSON2
1374 select CPU_SUPPORTS_32BIT_KERNEL
1375 select CPU_SUPPORTS_64BIT_KERNEL
1376 select CPU_SUPPORTS_HIGHMEM
1378 config SYS_HAS_CPU_LOONGSON2E
1381 config SYS_HAS_CPU_LOONGSON2F
1383 select CPU_SUPPORTS_CPUFREQ
1384 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1385 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1387 config SYS_HAS_CPU_MIPS32_R1
1390 config SYS_HAS_CPU_MIPS32_R2
1393 config SYS_HAS_CPU_MIPS64_R1
1396 config SYS_HAS_CPU_MIPS64_R2
1399 config SYS_HAS_CPU_R3000
1402 config SYS_HAS_CPU_TX39XX
1405 config SYS_HAS_CPU_VR41XX
1408 config SYS_HAS_CPU_R4300
1411 config SYS_HAS_CPU_R4X00
1414 config SYS_HAS_CPU_TX49XX
1417 config SYS_HAS_CPU_R5000
1420 config SYS_HAS_CPU_R5432
1423 config SYS_HAS_CPU_R5500
1426 config SYS_HAS_CPU_R6000
1429 config SYS_HAS_CPU_NEVADA
1432 config SYS_HAS_CPU_R8000
1435 config SYS_HAS_CPU_R10000
1438 config SYS_HAS_CPU_RM7000
1441 config SYS_HAS_CPU_RM9000
1444 config SYS_HAS_CPU_SB1
1447 config SYS_HAS_CPU_CAVIUM_OCTEON
1451 # CPU may reorder R->R, R->W, W->R, W->W
1452 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1454 config WEAK_ORDERING
1458 # CPU may reorder reads and writes beyond LL/SC
1459 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1461 config WEAK_REORDERING_BEYOND_LLSC
1466 # These two indicate any level of the MIPS32 and MIPS64 architecture
1470 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1474 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1477 # These two indicate the revision of the architecture, either Release 1 or Release 2
1481 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1485 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1487 config SYS_SUPPORTS_32BIT_KERNEL
1489 config SYS_SUPPORTS_64BIT_KERNEL
1491 config CPU_SUPPORTS_32BIT_KERNEL
1493 config CPU_SUPPORTS_64BIT_KERNEL
1495 config CPU_SUPPORTS_CPUFREQ
1497 config CPU_SUPPORTS_ADDRWINCFG
1499 config CPU_SUPPORTS_HUGEPAGES
1501 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1503 config MIPS_PGD_C0_CONTEXT
1505 default y if 64BIT && CPU_MIPSR2
1508 # Set to y for ptrace access to watch registers.
1510 config HARDWARE_WATCHPOINTS
1512 default y if CPU_MIPSR1 || CPU_MIPSR2
1518 prompt "Kernel code model"
1520 You should only select this option if you have a workload that
1521 actually benefits from 64-bit processing or if your machine has
1522 large memory. You will only be presented a single option in this
1523 menu if your system does not support both 32-bit and 64-bit kernels.
1526 bool "32-bit kernel"
1527 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1530 Select this option if you want to build a 32-bit kernel.
1532 bool "64-bit kernel"
1533 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1534 select HAVE_SYSCALL_WRAPPERS
1536 Select this option if you want to build a 64-bit kernel.
1541 prompt "Kernel page size"
1542 default PAGE_SIZE_4KB
1544 config PAGE_SIZE_4KB
1546 depends on !CPU_LOONGSON2
1548 This option select the standard 4kB Linux page size. On some
1549 R3000-family processors this is the only available page size. Using
1550 4kB page size will minimize memory consumption and is therefore
1551 recommended for low memory systems.
1553 config PAGE_SIZE_8KB
1555 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1557 Using 8kB page size will result in higher performance kernel at
1558 the price of higher memory consumption. This option is available
1559 only on R8000 and cnMIPS processors. Note that you will need a
1560 suitable Linux distribution to support this.
1562 config PAGE_SIZE_16KB
1564 depends on !CPU_R3000 && !CPU_TX39XX
1566 Using 16kB page size will result in higher performance kernel at
1567 the price of higher memory consumption. This option is available on
1568 all non-R3000 family processors. Note that you will need a suitable
1569 Linux distribution to support this.
1571 config PAGE_SIZE_32KB
1573 depends on CPU_CAVIUM_OCTEON
1575 Using 32kB page size will result in higher performance kernel at
1576 the price of higher memory consumption. This option is available
1577 only on cnMIPS cores. Note that you will need a suitable Linux
1578 distribution to support this.
1580 config PAGE_SIZE_64KB
1582 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1584 Using 64kB page size will result in higher performance kernel at
1585 the price of higher memory consumption. This option is available on
1586 all non-R3000 family processor. Not that at the time of this
1587 writing this option is still high experimental.
1594 config IP22_CPU_SCACHE
1599 # Support for a MIPS32 / MIPS64 style S-caches
1601 config MIPS_CPU_SCACHE
1605 config R5000_CPU_SCACHE
1609 config RM7000_CPU_SCACHE
1613 config SIBYTE_DMA_PAGEOPS
1614 bool "Use DMA to clear/copy pages"
1617 Instead of using the CPU to zero and copy pages, use a Data Mover
1618 channel. These DMA channels are otherwise unused by the standard
1619 SiByte Linux port. Seems to give a small performance benefit.
1621 config CPU_HAS_PREFETCH
1625 prompt "MIPS MT options"
1627 config MIPS_MT_DISABLED
1628 bool "Disable multithreading support."
1630 Use this option if your workload can't take advantage of
1631 MIPS hardware multithreading support. On systems that don't have
1632 the option of an MT-enabled processor this option will be the only
1633 option in this menu.
1636 bool "Use 1 TC on each available VPE for SMP"
1637 depends on SYS_SUPPORTS_MULTITHREADING
1638 select CPU_MIPSR2_IRQ_VI
1639 select CPU_MIPSR2_IRQ_EI
1641 select NR_CPUS_DEFAULT_2
1643 select SYS_SUPPORTS_SCHED_SMT if SMP
1644 select SYS_SUPPORTS_SMP
1647 This is a kernel model which is also known a VSMP or lately
1648 has been marketesed into SMVP.
1651 bool "SMTC: Use all TCs on all VPEs for SMP"
1652 depends on CPU_MIPS32_R2
1653 #depends on CPU_MIPS64_R2 # once there is hardware ...
1654 depends on SYS_SUPPORTS_MULTITHREADING
1655 select CPU_MIPSR2_IRQ_VI
1656 select CPU_MIPSR2_IRQ_EI
1658 select NR_CPUS_DEFAULT_8
1660 select SYS_SUPPORTS_SMP
1663 This is a kernel model which is known a SMTC or lately has been
1664 marketesed into SMVP.
1672 bool "SMT (multithreading) scheduler support"
1673 depends on SYS_SUPPORTS_SCHED_SMT
1676 SMT scheduler support improves the CPU scheduler's decision making
1677 when dealing with MIPS MT enabled cores at a cost of slightly
1678 increased overhead in some places. If unsure say N here.
1680 config SYS_SUPPORTS_SCHED_SMT
1684 config SYS_SUPPORTS_MULTITHREADING
1687 config MIPS_MT_FPAFF
1688 bool "Dynamic FPU affinity for FP-intensive threads"
1690 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1692 config MIPS_VPE_LOADER
1693 bool "VPE loader support."
1694 depends on SYS_SUPPORTS_MULTITHREADING
1695 select CPU_MIPSR2_IRQ_VI
1696 select CPU_MIPSR2_IRQ_EI
1699 Includes a loader for loading an elf relocatable object
1700 onto another VPE and running it.
1702 config MIPS_MT_SMTC_IM_BACKSTOP
1703 bool "Use per-TC register bits as backstop for inhibited IM bits"
1704 depends on MIPS_MT_SMTC
1707 To support multiple TC microthreads acting as "CPUs" within
1708 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1709 during interrupt handling. To support legacy drivers and interrupt
1710 controller management code, SMTC has a "backstop" to track and
1711 if necessary restore the interrupt mask. This has some performance
1712 impact on interrupt service overhead.
1714 config MIPS_MT_SMTC_IRQAFF
1715 bool "Support IRQ affinity API"
1716 depends on MIPS_MT_SMTC
1719 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1720 for SMTC Linux kernel. Requires platform support, of which
1721 an example can be found in the MIPS kernel i8259 and Malta
1722 platform code. Adds some overhead to interrupt dispatch, and
1723 should be used only if you know what you are doing.
1725 config MIPS_VPE_LOADER_TOM
1726 bool "Load VPE program into memory hidden from linux"
1727 depends on MIPS_VPE_LOADER
1730 The loader can use memory that is present but has been hidden from
1731 Linux using the kernel command line option "mem=xxMB". It's up to
1732 you to ensure the amount you put in the option and the space your
1733 program requires is less or equal to the amount physically present.
1735 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1736 config MIPS_VPE_APSP_API
1737 bool "Enable support for AP/SP API (RTLX)"
1738 depends on MIPS_VPE_LOADER
1741 config MIPS_APSP_KSPD
1743 depends on MIPS_VPE_APSP_API
1746 KSPD is a kernel daemon that accepts syscall requests from the SP
1747 side, actions them and returns the results. It also handles the
1748 "exit" syscall notifying other kernel modules the SP program is
1749 exiting. You probably want to say yes here.
1752 bool "MIPS CMP framework support"
1753 depends on SYS_SUPPORTS_MIPS_CMP
1755 select SYS_SUPPORTS_SMP
1756 select SYS_SUPPORTS_SCHED_SMT if SMP
1757 select WEAK_ORDERING
1760 This is a placeholder option for the GCMP work. It will need to
1761 be handled differently...
1763 config SB1_PASS_1_WORKAROUNDS
1765 depends on CPU_SB1_PASS_1
1768 config SB1_PASS_2_WORKAROUNDS
1770 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1773 config SB1_PASS_2_1_WORKAROUNDS
1775 depends on CPU_SB1 && CPU_SB1_PASS_2
1778 config 64BIT_PHYS_ADDR
1781 config ARCH_PHYS_ADDR_T_64BIT
1782 def_bool 64BIT_PHYS_ADDR
1784 config CPU_HAS_SMARTMIPS
1785 depends on SYS_SUPPORTS_SMARTMIPS
1786 bool "Support for the SmartMIPS ASE"
1788 SmartMIPS is a extension of the MIPS32 architecture aimed at
1789 increased security at both hardware and software level for
1790 smartcards. Enabling this option will allow proper use of the
1791 SmartMIPS instructions by Linux applications. However a kernel with
1792 this option will not work on a MIPS core without SmartMIPS core. If
1793 you don't know you probably don't have SmartMIPS and should say N
1800 # Vectored interrupt mode is an R2 feature
1802 config CPU_MIPSR2_IRQ_VI
1806 # Extended interrupt mode is an R2 feature
1808 config CPU_MIPSR2_IRQ_EI
1813 depends on !CPU_R3000
1816 config GENERIC_CLOCKEVENTS_BROADCAST
1822 config CPU_DADDI_WORKAROUNDS
1825 config CPU_R4000_WORKAROUNDS
1827 select CPU_R4400_WORKAROUNDS
1829 config CPU_R4400_WORKAROUNDS
1833 # Use the generic interrupt handling code in kernel/irq/:
1835 config GENERIC_HARDIRQS
1839 config GENERIC_IRQ_PROBE
1847 # - Highmem only makes sense for the 32-bit kernel.
1848 # - The current highmem code will only work properly on physically indexed
1849 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1850 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1851 # moment we protect the user and offer the highmem option only on machines
1852 # where it's known to be safe. This will not offer highmem on a few systems
1853 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1854 # indexed CPUs but we're playing safe.
1855 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1856 # know they might have memory configurations that could make use of highmem
1860 bool "High Memory Support"
1861 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1863 config CPU_SUPPORTS_HIGHMEM
1866 config SYS_SUPPORTS_HIGHMEM
1869 config SYS_SUPPORTS_SMARTMIPS
1872 config ARCH_FLATMEM_ENABLE
1874 depends on !NUMA && !CPU_LOONGSON2
1876 config ARCH_DISCONTIGMEM_ENABLE
1878 default y if SGI_IP27
1880 Say Y to support efficient handling of discontiguous physical memory,
1881 for architectures which are either NUMA (Non-Uniform Memory Access)
1882 or have huge holes in the physical address space for other reasons.
1883 See <file:Documentation/vm/numa> for more.
1885 config ARCH_POPULATES_NODE_MAP
1888 config ARCH_SPARSEMEM_ENABLE
1890 select SPARSEMEM_STATIC
1894 depends on SYS_SUPPORTS_NUMA
1896 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1897 Access). This option improves performance on systems with more
1898 than two nodes; on two node systems it is generally better to
1899 leave it disabled; on single node systems disable this option
1902 config SYS_SUPPORTS_NUMA
1908 depends on NEED_MULTIPLE_NODES
1913 bool "Multi-Processing support"
1914 depends on SYS_SUPPORTS_SMP
1916 select USE_GENERIC_SMP_HELPERS
1918 This enables support for systems with more than one CPU. If you have
1919 a system with only one CPU, like most personal computers, say N. If
1920 you have a system with more than one CPU, say Y.
1922 If you say N here, the kernel will run on single and multiprocessor
1923 machines, but will use only one CPU of a multiprocessor machine. If
1924 you say Y here, the kernel will run on many, but not all,
1925 singleprocessor machines. On a singleprocessor machine, the kernel
1926 will run faster if you say N here.
1928 People using multiprocessor machines who say Y here should also say
1929 Y to "Enhanced Real Time Clock Support", below.
1931 See also the SMP-HOWTO available at
1932 <http://www.tldp.org/docs.html#howto>.
1934 If you don't know what to do here, say N.
1939 config SYS_SUPPORTS_MIPS_CMP
1942 config SYS_SUPPORTS_SMP
1945 config NR_CPUS_DEFAULT_1
1948 config NR_CPUS_DEFAULT_2
1951 config NR_CPUS_DEFAULT_4
1954 config NR_CPUS_DEFAULT_8
1957 config NR_CPUS_DEFAULT_16
1960 config NR_CPUS_DEFAULT_32
1963 config NR_CPUS_DEFAULT_64
1967 int "Maximum number of CPUs (2-64)"
1968 range 1 64 if NR_CPUS_DEFAULT_1
1970 default "1" if NR_CPUS_DEFAULT_1
1971 default "2" if NR_CPUS_DEFAULT_2
1972 default "4" if NR_CPUS_DEFAULT_4
1973 default "8" if NR_CPUS_DEFAULT_8
1974 default "16" if NR_CPUS_DEFAULT_16
1975 default "32" if NR_CPUS_DEFAULT_32
1976 default "64" if NR_CPUS_DEFAULT_64
1978 This allows you to specify the maximum number of CPUs which this
1979 kernel will support. The maximum supported value is 32 for 32-bit
1980 kernel and 64 for 64-bit kernels; the minimum value which makes
1981 sense is 1 for Qemu (useful only for kernel debugging purposes)
1982 and 2 for all others.
1984 This is purely to save memory - each supported CPU adds
1985 approximately eight kilobytes to the kernel image. For best
1986 performance should round up your number of processors to the next
1989 source "kernel/time/Kconfig"
1992 # Timer Interrupt Frequency Configuration
1996 prompt "Timer frequency"
1999 Allows the configuration of the timer frequency.
2002 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2005 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2008 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2011 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2014 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2017 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2020 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2024 config SYS_SUPPORTS_48HZ
2027 config SYS_SUPPORTS_100HZ
2030 config SYS_SUPPORTS_128HZ
2033 config SYS_SUPPORTS_250HZ
2036 config SYS_SUPPORTS_256HZ
2039 config SYS_SUPPORTS_1000HZ
2042 config SYS_SUPPORTS_1024HZ
2045 config SYS_SUPPORTS_ARBIT_HZ
2047 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2048 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2049 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2050 !SYS_SUPPORTS_1024HZ
2055 default 100 if HZ_100
2056 default 128 if HZ_128
2057 default 250 if HZ_250
2058 default 256 if HZ_256
2059 default 1000 if HZ_1000
2060 default 1024 if HZ_1024
2062 source "kernel/Kconfig.preempt"
2064 config MIPS_INSANE_LARGE
2065 bool "Support for large 64-bit configurations"
2066 depends on CPU_R10000 && 64BIT
2068 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2069 previous 64-bit processors which only supported 40 bit / 1TB. If you
2070 need processes of more than 1TB virtual address space, say Y here.
2071 This will result in additional memory usage, so it is not
2072 recommended for normal users.
2075 bool "Kexec system call (EXPERIMENTAL)"
2076 depends on EXPERIMENTAL
2078 kexec is a system call that implements the ability to shutdown your
2079 current kernel, and to start another kernel. It is like a reboot
2080 but it is independent of the system firmware. And like a reboot
2081 you can start any kernel with it, not just Linux.
2083 The name comes from the similarity to the exec system call.
2085 It is an ongoing process to be certain the hardware in a machine
2086 is properly shutdown, so do not be surprised if this code does not
2087 initially work for you. It may help to enable device hotplugging
2088 support. As of this writing the exact hardware interface is
2089 strongly in flux, so no good recommendation can be made.
2092 bool "Enable seccomp to safely compute untrusted bytecode"
2096 This kernel feature is useful for number crunching applications
2097 that may need to compute untrusted bytecode during their
2098 execution. By using pipes or other transports made available to
2099 the process as file descriptors supporting the read/write
2100 syscalls, it's possible to isolate those applications in
2101 their own address space using seccomp. Once seccomp is
2102 enabled via /proc/<pid>/seccomp, it cannot be disabled
2103 and the task is only allowed to execute a few safe syscalls
2104 defined by each seccomp mode.
2106 If unsure, say Y. Only embedded should say N here.
2110 config LOCKDEP_SUPPORT
2114 config STACKTRACE_SUPPORT
2118 source "init/Kconfig"
2120 source "kernel/Kconfig.freezer"
2122 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2130 bool "Support for PCI controller"
2131 depends on HW_HAS_PCI
2134 Find out whether you have a PCI motherboard. PCI is the name of a
2135 bus system, i.e. the way the CPU talks to the other stuff inside
2136 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2142 source "drivers/pci/Kconfig"
2145 # ISA support is now enabled via select. Too many systems still have the one
2146 # or other ISA chip on the board that users don't know about so don't expect
2147 # users to choose the right thing ...
2154 depends on HW_HAS_EISA
2156 select GENERIC_ISA_DMA
2158 The Extended Industry Standard Architecture (EISA) bus was
2159 developed as an open alternative to the IBM MicroChannel bus.
2161 The EISA bus provided some of the features of the IBM MicroChannel
2162 bus while maintaining backward compatibility with cards made for
2163 the older ISA bus. The EISA bus saw limited use between 1988 and
2164 1995 when it was made obsolete by the PCI bus.
2166 Say Y here if you are building a kernel for an EISA-based machine.
2170 source "drivers/eisa/Kconfig"
2173 bool "TURBOchannel support"
2174 depends on MACH_DECSTATION
2176 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2177 processors. Documentation on writing device drivers for TurboChannel
2179 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
2182 # bool "Access.Bus support"
2191 select MIPS_EXTERNAL_TIMER
2196 source "drivers/pcmcia/Kconfig"
2198 source "drivers/pci/hotplug/Kconfig"
2202 menu "Executable file formats"
2204 source "fs/Kconfig.binfmt"
2209 config MIPS32_COMPAT
2210 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2213 Select this option if you want Linux/MIPS 32-bit binary
2214 compatibility. Since all software available for Linux/MIPS is
2215 currently 32-bit you should say Y here.
2219 depends on MIPS32_COMPAT
2222 config SYSVIPC_COMPAT
2224 depends on COMPAT && SYSVIPC
2228 bool "Kernel support for o32 binaries"
2229 depends on MIPS32_COMPAT
2231 Select this option if you want to run o32 binaries. These are pure
2232 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2233 existing binaries are in this format.
2238 bool "Kernel support for n32 binaries"
2239 depends on MIPS32_COMPAT
2241 Select this option if you want to run n32 binaries. These are
2242 64-bit binaries using 32-bit quantities for addressing and certain
2243 data that would normally be 64-bit. They are used in special
2250 default y if MIPS32_O32 || MIPS32_N32
2254 menu "Power management options"
2256 config ARCH_HIBERNATION_POSSIBLE
2258 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2260 config ARCH_SUSPEND_POSSIBLE
2262 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2264 source "kernel/power/Kconfig"
2268 source "arch/mips/kernel/cpufreq/Kconfig"
2270 source "net/Kconfig"
2272 source "drivers/Kconfig"
2276 source "arch/mips/Kconfig.debug"
2278 source "security/Kconfig"
2280 source "crypto/Kconfig"
2282 source "lib/Kconfig"