4 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_PERF_EVENTS
9 select PERF_USE_VMALLOC
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select RTC_LIB if !MACH_LOONGSON
20 select GENERIC_ATOMIC64 if !64BIT
22 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_HARDIRQS
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select HAVE_ARCH_JUMP_LABEL
28 menu "Machine selection"
38 bool "Alchemy processor based machines"
39 select 64BIT_PHYS_ADDR
43 select SYS_HAS_CPU_MIPS32_R1
44 select SYS_SUPPORTS_32BIT_KERNEL
45 select SYS_SUPPORTS_APM_EMULATION
47 select ARCH_WANT_OPTIONAL_GPIOLIB
48 select SYS_SUPPORTS_ZBOOT
51 bool "Texas Instruments AR7"
53 select DMA_NONCOHERENT
59 select SYS_HAS_CPU_MIPS32_R1
60 select SYS_HAS_EARLY_PRINTK
61 select SYS_SUPPORTS_32BIT_KERNEL
62 select SYS_SUPPORTS_LITTLE_ENDIAN
63 select SYS_SUPPORTS_ZBOOT_UART16550
64 select ARCH_REQUIRE_GPIOLIB
68 Support for the Texas Instruments AR7 System-on-a-Chip
69 family: TNETD7100, 7200 and 7300.
72 bool "Atheros AR71XX/AR724X/AR913X based boards"
73 select ARCH_REQUIRE_GPIOLIB
77 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R2
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_BIG_ENDIAN
85 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
88 bool "Broadcom BCM47XX based boards"
91 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SSB_DRIVER_MIPS
99 select SSB_DRIVER_EXTIF
101 select SSB_B43_PCI_BRIDGE if PCI
102 select SSB_PCICORE_HOSTMODE if PCI
104 select SYS_HAS_EARLY_PRINTK
107 Support for BCM47XX based boards
110 bool "Broadcom BCM63XX based boards"
113 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_HAS_EARLY_PRINTK
120 select ARCH_REQUIRE_GPIOLIB
122 Support for BCM63XX based boards
129 select DMA_NONCOHERENT
135 select PCI_GT64XXX_PCI0
137 select SYS_HAS_CPU_NEVADA
138 select SYS_HAS_EARLY_PRINTK
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_64BIT_KERNEL
141 select SYS_SUPPORTS_LITTLE_ENDIAN
143 config MACH_DECSTATION
150 select CPU_DADDI_WORKAROUNDS if 64BIT
151 select CPU_R4000_WORKAROUNDS if 64BIT
152 select CPU_R4400_WORKAROUNDS if 64BIT
153 select DMA_NONCOHERENT
156 select SYS_HAS_CPU_R3000
157 select SYS_HAS_CPU_R4X00
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_128HZ
162 select SYS_SUPPORTS_256HZ
163 select SYS_SUPPORTS_1024HZ
165 This enables support for DEC's MIPS based workstations. For details
166 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
167 DECstation porting pages on <http://decstation.unix-ag.org/>.
169 If you have one of the following DECstation Models you definitely
170 want to choose R4xx0 for the CPU Type:
177 otherwise choose R3000.
180 bool "Jazz family of machines"
183 select ARCH_MAY_HAVE_PC_FDC
186 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
187 select GENERIC_ISA_DMA
192 select SYS_HAS_CPU_R4X00
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
195 select SYS_SUPPORTS_100HZ
197 This a family of machines based on the MIPS R4030 chipset which was
198 used by several vendors to build RISC/os and Windows NT workstations.
199 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
200 Olivetti M700-10 workstations.
203 bool "Ingenic JZ4740 based machines"
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_LITTLE_ENDIAN
207 select DMA_NONCOHERENT
210 select ARCH_REQUIRE_GPIOLIB
211 select SYS_HAS_EARLY_PRINTK
216 bool "LASAT Networks platforms"
219 select DMA_NONCOHERENT
220 select SYS_HAS_EARLY_PRINTK
223 select PCI_GT64XXX_PCI0
225 select R5000_CPU_SCACHE
226 select SYS_HAS_CPU_R5000
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
229 select SYS_SUPPORTS_LITTLE_ENDIAN
232 bool "Loongson family of machines"
233 select SYS_SUPPORTS_ZBOOT
235 This enables the support of Loongson family of machines.
237 Loongson is a family of general-purpose MIPS-compatible CPUs.
238 developed at Institute of Computing Technology (ICT),
239 Chinese Academy of Sciences (CAS) in the People's Republic
240 of China. The chief architect is Professor Weiwu Hu.
243 bool "MIPS Malta board"
244 select ARCH_MAY_HAVE_PC_FDC
249 select DMA_NONCOHERENT
250 select GENERIC_ISA_DMA
256 select MIPS_BOARDS_GEN
258 select MIPS_CPU_SCACHE
259 select PCI_GT64XXX_PCI0
262 select SYS_HAS_CPU_MIPS32_R1
263 select SYS_HAS_CPU_MIPS32_R2
264 select SYS_HAS_CPU_MIPS64_R1
265 select SYS_HAS_CPU_NEVADA
266 select SYS_HAS_CPU_RM7000
267 select SYS_HAS_EARLY_PRINTK
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_64BIT_KERNEL
270 select SYS_SUPPORTS_BIG_ENDIAN
271 select SYS_SUPPORTS_LITTLE_ENDIAN
272 select SYS_SUPPORTS_MIPS_CMP
273 select SYS_SUPPORTS_MULTITHREADING
274 select SYS_SUPPORTS_SMARTMIPS
275 select SYS_SUPPORTS_ZBOOT
277 This enables support for the MIPS Technologies Malta evaluation
281 bool 'MIPS simulator (MIPSsim)'
284 select DMA_NONCOHERENT
285 select SYS_HAS_EARLY_PRINTK
288 select SYS_HAS_CPU_MIPS32_R1
289 select SYS_HAS_CPU_MIPS32_R2
290 select SYS_HAS_EARLY_PRINTK
291 select SYS_SUPPORTS_32BIT_KERNEL
292 select SYS_SUPPORTS_BIG_ENDIAN
293 select SYS_SUPPORTS_MULTITHREADING
294 select SYS_SUPPORTS_LITTLE_ENDIAN
296 This option enables support for MIPS Technologies MIPSsim software
300 bool "NEC EMMA2RH Mark-eins board"
304 This enables support for the NEC Electronics Mark-eins boards.
307 bool "NEC VR4100 series based machines"
310 select SYS_HAS_CPU_VR41XX
311 select ARCH_REQUIRE_GPIOLIB
314 bool "NXP STB220 board"
317 Support for NXP Semiconductors STB220 Development Board.
324 Support for NXP Semiconductors STB225 Development Board.
327 bool "NXP PNX8550 based JBS board"
329 select SYS_SUPPORTS_LITTLE_ENDIAN
331 config PNX8550_STB810
332 bool "NXP PNX8550 based STB810 board"
334 select SYS_SUPPORTS_LITTLE_ENDIAN
337 bool "PMC-Sierra MSP chipsets"
338 depends on EXPERIMENTAL
341 select DMA_NONCOHERENT
343 select NO_EXCEPT_FILL
345 select SYS_HAS_CPU_MIPS32_R1
346 select SYS_HAS_CPU_MIPS32_R2
347 select SYS_SUPPORTS_32BIT_KERNEL
348 select SYS_SUPPORTS_BIG_ENDIAN
351 select SERIAL_8250_CONSOLE
353 This adds support for the PMC-Sierra family of Multi-Service
354 Processor System-On-A-Chips. These parts include a number
355 of integrated peripherals, interfaces and DSPs in addition to
356 a variety of MIPS cores.
359 bool "PMC-Sierra Yosemite eval board"
368 select SYS_HAS_CPU_RM9000
369 select SYS_HAS_EARLY_PRINTK
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_BIG_ENDIAN
373 select SYS_SUPPORTS_HIGHMEM
374 select SYS_SUPPORTS_SMP
376 Yosemite is an evaluation board for the RM9000x2 processor
377 manufactured by PMC-Sierra.
383 select CPU_MIPSR2_IRQ_VI
384 select CPU_MIPSR2_IRQ_EI
386 select DMA_NONCOHERENT
388 select SYS_HAS_EARLY_PRINTK
389 select SYS_HAS_CPU_MIPS32_R2
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_HIGHMEM
393 select USB_OHCI_LITTLE_ENDIAN
395 This enables support for the Cisco PowerTV Platform.
398 bool "SGI IP22 (Indy/Indigo2)"
404 select DEFAULT_SGI_PARTITION
405 select DMA_NONCOHERENT
409 select IP22_CPU_SCACHE
411 select GENERIC_ISA_DMA_SUPPORT_BROKEN
413 select SGI_HAS_INDYDOG
419 select SYS_HAS_CPU_R4X00
420 select SYS_HAS_CPU_R5000
422 # Disable EARLY_PRINTK for now since it leads to overwritten prom
423 # memory during early boot on some machines.
425 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
426 # for a more details discussion
428 # select SYS_HAS_EARLY_PRINTK
429 select SYS_SUPPORTS_32BIT_KERNEL
430 select SYS_SUPPORTS_64BIT_KERNEL
431 select SYS_SUPPORTS_BIG_ENDIAN
433 This are the SGI Indy, Challenge S and Indigo2, as well as certain
434 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
435 that runs on these, say Y here.
438 bool "SGI IP27 (Origin200/2000)"
442 select DEFAULT_SGI_PARTITION
444 select SYS_HAS_EARLY_PRINTK
446 select NR_CPUS_DEFAULT_64
447 select SYS_HAS_CPU_R10000
448 select SYS_SUPPORTS_64BIT_KERNEL
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_NUMA
451 select SYS_SUPPORTS_SMP
453 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
454 workstations. To compile a Linux kernel that runs on these, say Y
458 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
459 depends on EXPERIMENTAL
465 select DEFAULT_SGI_PARTITION
466 select DMA_NONCOHERENT
467 select GENERIC_ISA_DMA_SUPPORT_BROKEN
473 select SGI_HAS_INDYDOG
479 select SYS_HAS_CPU_R10000
481 # Disable EARLY_PRINTK for now since it leads to overwritten prom
482 # memory during early boot on some machines.
484 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
485 # for a more details discussion
487 # select SYS_HAS_EARLY_PRINTK
488 select SYS_SUPPORTS_64BIT_KERNEL
489 select SYS_SUPPORTS_BIG_ENDIAN
491 This is the SGI Indigo2 with R10000 processor. To compile a Linux
492 kernel that runs on these, say Y here.
501 select DMA_NONCOHERENT
504 select R5000_CPU_SCACHE
505 select RM7000_CPU_SCACHE
506 select SYS_HAS_CPU_R5000
507 select SYS_HAS_CPU_R10000 if BROKEN
508 select SYS_HAS_CPU_RM7000
509 select SYS_HAS_CPU_NEVADA
510 select SYS_SUPPORTS_64BIT_KERNEL
511 select SYS_SUPPORTS_BIG_ENDIAN
513 If you want this kernel to run on SGI O2 workstation, say Y here.
516 bool "Sibyte BCM91120C-CRhine"
517 depends on EXPERIMENTAL
520 select SIBYTE_BCM1120
522 select SYS_HAS_CPU_SB1
523 select SYS_SUPPORTS_BIG_ENDIAN
524 select SYS_SUPPORTS_LITTLE_ENDIAN
527 bool "Sibyte BCM91120x-Carmel"
528 depends on EXPERIMENTAL
531 select SIBYTE_BCM1120
533 select SYS_HAS_CPU_SB1
534 select SYS_SUPPORTS_BIG_ENDIAN
535 select SYS_SUPPORTS_LITTLE_ENDIAN
538 bool "Sibyte BCM91125C-CRhone"
539 depends on EXPERIMENTAL
542 select SIBYTE_BCM1125
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_HIGHMEM
547 select SYS_SUPPORTS_LITTLE_ENDIAN
550 bool "Sibyte BCM91125E-Rhone"
551 depends on EXPERIMENTAL
554 select SIBYTE_BCM1125H
556 select SYS_HAS_CPU_SB1
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_LITTLE_ENDIAN
561 bool "Sibyte BCM91250A-SWARM"
564 select HAVE_PATA_PLATFORM
565 select NR_CPUS_DEFAULT_2
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
572 select ZONE_DMA32 if 64BIT
574 config SIBYTE_LITTLESUR
575 bool "Sibyte BCM91250C2-LittleSur"
576 depends on EXPERIMENTAL
579 select HAVE_PATA_PLATFORM
580 select NR_CPUS_DEFAULT_2
583 select SYS_HAS_CPU_SB1
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_HIGHMEM
586 select SYS_SUPPORTS_LITTLE_ENDIAN
588 config SIBYTE_SENTOSA
589 bool "Sibyte BCM91250E-Sentosa"
590 depends on EXPERIMENTAL
593 select NR_CPUS_DEFAULT_2
596 select SYS_HAS_CPU_SB1
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_LITTLE_ENDIAN
601 bool "Sibyte BCM91480B-BigSur"
604 select NR_CPUS_DEFAULT_4
605 select SIBYTE_BCM1x80
607 select SYS_HAS_CPU_SB1
608 select SYS_SUPPORTS_BIG_ENDIAN
609 select SYS_SUPPORTS_HIGHMEM
610 select SYS_SUPPORTS_LITTLE_ENDIAN
611 select ZONE_DMA32 if 64BIT
614 bool "SNI RM200/300/400"
615 select ARC if CPU_LITTLE_ENDIAN
616 select ARC32 if CPU_LITTLE_ENDIAN
617 select SNIPROM if CPU_BIG_ENDIAN
618 select ARCH_MAY_HAVE_PC_FDC
622 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
623 select DMA_NONCOHERENT
624 select GENERIC_ISA_DMA
631 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
632 select SYS_HAS_CPU_R4X00
633 select SYS_HAS_CPU_R5000
634 select SYS_HAS_CPU_R10000
635 select R5000_CPU_SCACHE
636 select SYS_HAS_EARLY_PRINTK
637 select SYS_SUPPORTS_32BIT_KERNEL
638 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select SYS_SUPPORTS_HIGHMEM
641 select SYS_SUPPORTS_LITTLE_ENDIAN
643 The SNI RM200/300/400 are MIPS-based machines manufactured by
644 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
645 Technology and now in turn merged with Fujitsu. Say Y here to
646 support this machine type.
649 bool "Toshiba TX39 series based machines"
652 bool "Toshiba TX49 series based machines"
654 config MIKROTIK_RB532
655 bool "Mikrotik RB532 boards"
658 select DMA_NONCOHERENT
661 select SYS_HAS_CPU_MIPS32_R1
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_LITTLE_ENDIAN
666 select ARCH_REQUIRE_GPIOLIB
668 Support the Mikrotik(tm) RouterBoard 532 series,
669 based on the IDT RC32434 SoC.
672 bool "Wind River PPMC board"
677 select DMA_NONCOHERENT
679 select PCI_GT64XXX_PCI0
681 select SYS_HAS_CPU_MIPS32_R1
682 select SYS_HAS_CPU_MIPS32_R2
683 select SYS_HAS_CPU_MIPS64_R1
684 select SYS_HAS_CPU_NEVADA
685 select SYS_HAS_CPU_RM7000
686 select SYS_SUPPORTS_32BIT_KERNEL
687 select SYS_SUPPORTS_64BIT_KERNEL
688 select SYS_SUPPORTS_BIG_ENDIAN
689 select SYS_SUPPORTS_LITTLE_ENDIAN
691 This enables support for the Wind River MIPS32 4KC PPMC evaluation
692 board, which is based on GT64120 bridge chip.
694 config CAVIUM_OCTEON_SIMULATOR
695 bool "Cavium Networks Octeon Simulator"
697 select 64BIT_PHYS_ADDR
699 select SYS_SUPPORTS_64BIT_KERNEL
700 select SYS_SUPPORTS_BIG_ENDIAN
701 select SYS_SUPPORTS_HIGHMEM
702 select SYS_SUPPORTS_HOTPLUG_CPU
703 select SYS_HAS_CPU_CAVIUM_OCTEON
705 The Octeon simulator is software performance model of the Cavium
706 Octeon Processor. It supports simulating Octeon processors on x86
709 config CAVIUM_OCTEON_REFERENCE_BOARD
710 bool "Cavium Networks Octeon reference board"
712 select 64BIT_PHYS_ADDR
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_HIGHMEM
717 select SYS_SUPPORTS_HOTPLUG_CPU
718 select SYS_HAS_EARLY_PRINTK
719 select SYS_HAS_CPU_CAVIUM_OCTEON
722 select ARCH_SUPPORTS_MSI
724 select USB_ARCH_HAS_OHCI
725 select USB_ARCH_HAS_EHCI
727 This option supports all of the Octeon reference boards from Cavium
728 Networks. It builds a kernel that dynamically determines the Octeon
729 CPU type and supports all known board reference implementations.
730 Some of the supported boards are:
737 Say Y here for most Octeon reference boards.
740 bool "Netlogic XLR/XLS based systems"
741 depends on EXPERIMENTAL
745 select SYS_HAS_CPU_XLR
746 select SYS_SUPPORTS_SMP
749 select SYS_SUPPORTS_32BIT_KERNEL
750 select SYS_SUPPORTS_64BIT_KERNEL
751 select 64BIT_PHYS_ADDR
752 select SYS_SUPPORTS_BIG_ENDIAN
753 select SYS_SUPPORTS_HIGHMEM
755 select NR_CPUS_DEFAULT_32
759 select ZONE_DMA if 64BIT
761 select SYS_HAS_EARLY_PRINTK
763 Support for systems based on Netlogic XLR and XLS processors.
764 Say Y here if you have a XLR or XLS based board.
768 source "arch/mips/alchemy/Kconfig"
769 source "arch/mips/ath79/Kconfig"
770 source "arch/mips/bcm63xx/Kconfig"
771 source "arch/mips/jazz/Kconfig"
772 source "arch/mips/jz4740/Kconfig"
773 source "arch/mips/lasat/Kconfig"
774 source "arch/mips/pmc-sierra/Kconfig"
775 source "arch/mips/powertv/Kconfig"
776 source "arch/mips/sgi-ip27/Kconfig"
777 source "arch/mips/sibyte/Kconfig"
778 source "arch/mips/txx9/Kconfig"
779 source "arch/mips/vr41xx/Kconfig"
780 source "arch/mips/cavium-octeon/Kconfig"
781 source "arch/mips/loongson/Kconfig"
782 source "arch/mips/netlogic/Kconfig"
786 config RWSEM_GENERIC_SPINLOCK
790 config RWSEM_XCHGADD_ALGORITHM
793 config ARCH_HAS_ILOG2_U32
797 config ARCH_HAS_ILOG2_U64
801 config ARCH_SUPPORTS_OPROFILE
803 default y if !MIPS_MT_SMTC
805 config GENERIC_FIND_NEXT_BIT
809 config GENERIC_FIND_BIT_LE
813 config GENERIC_HWEIGHT
817 config GENERIC_CALIBRATE_DELAY
821 config GENERIC_CLOCKEVENTS
825 config GENERIC_CMOS_UPDATE
829 config SCHED_OMIT_FRAME_POINTER
834 # Select some configuration options automatically based on user selections.
839 config ARCH_MAY_HAVE_PC_FDC
888 select ARCH_REQUIRE_GPIOLIB
894 config ARCH_DMA_ADDR_T_64BIT
895 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
900 config DMA_NONCOHERENT
902 select NEED_DMA_MAP_STATE
904 config NEED_DMA_MAP_STATE
907 config SYS_HAS_EARLY_PRINTK
911 bool "Support for hot-pluggable CPUs"
912 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
914 Say Y here to allow turning CPUs off and on. CPUs can be
915 controlled through /sys/devices/system/cpu.
916 (Note: power management support will enable this option
917 automatically on SMP systems. )
918 Say N if you want to disable CPU hotplug.
920 config SYS_SUPPORTS_HOTPLUG_CPU
935 config MIPS_DISABLE_OBSOLETE_IDE
947 config GENERIC_ISA_DMA
949 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
952 config GENERIC_ISA_DMA_SUPPORT_BROKEN
954 select GENERIC_ISA_DMA
963 # Endianess selection. Sufficiently obscure so many users don't know what to
964 # answer,so we try hard to limit the available choices. Also the use of a
965 # choice statement should be more obvious to the user.
968 prompt "Endianess selection"
970 Some MIPS machines can be configured for either little or big endian
971 byte order. These modes require different kernels and a different
972 Linux distribution. In general there is one preferred byteorder for a
973 particular system but some systems are just as commonly used in the
974 one or the other endianness.
976 config CPU_BIG_ENDIAN
978 depends on SYS_SUPPORTS_BIG_ENDIAN
980 config CPU_LITTLE_ENDIAN
982 depends on SYS_SUPPORTS_LITTLE_ENDIAN
990 config SYS_SUPPORTS_APM_EMULATION
993 config SYS_SUPPORTS_BIG_ENDIAN
996 config SYS_SUPPORTS_LITTLE_ENDIAN
999 config SYS_SUPPORTS_HUGETLBFS
1001 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1028 config MIPS_BOARDS_GEN
1031 config PCI_GT64XXX_PCI0
1034 config NO_EXCEPT_FILL
1039 select SERIAL_RM9000
1045 select DMA_NONCOHERENT
1047 select SWAP_IO_SPACE
1048 select SYS_HAS_CPU_R5500
1049 select SYS_SUPPORTS_32BIT_KERNEL
1050 select SYS_SUPPORTS_64BIT_KERNEL
1051 select SYS_SUPPORTS_BIG_ENDIAN
1058 select DMA_NONCOHERENT
1059 select SYS_HAS_CPU_MIPS32_R2
1060 select SYS_SUPPORTS_32BIT_KERNEL
1061 select SYS_SUPPORTS_LITTLE_ENDIAN
1062 select SYS_SUPPORTS_BIG_ENDIAN
1064 select CPU_MIPSR2_IRQ_VI
1076 select DMA_NONCOHERENT
1078 select SYS_HAS_CPU_MIPS32_R1
1079 select SYS_HAS_EARLY_PRINTK
1080 select SYS_SUPPORTS_32BIT_KERNEL
1083 config SWAP_IO_SPACE
1086 config SERIAL_RM9000
1089 config SGI_HAS_INDYDOG
1101 config SGI_HAS_ZILOG
1104 config SGI_HAS_I8042
1107 config DEFAULT_SGI_PARTITION
1119 config MIPS_L1_CACHE_SHIFT
1121 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1122 default "6" if MIPS_CPU_SCACHE
1123 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1126 config HAVE_STD_PC_SERIAL_PORT
1130 bool "ARC console support"
1131 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1135 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1140 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1149 menu "CPU selection"
1155 config CPU_LOONGSON2E
1157 depends on SYS_HAS_CPU_LOONGSON2E
1158 select CPU_LOONGSON2
1160 The Loongson 2E processor implements the MIPS III instruction set
1161 with many extensions.
1163 It has an internal FPGA northbridge, which is compatible to
1166 config CPU_LOONGSON2F
1168 depends on SYS_HAS_CPU_LOONGSON2F
1169 select CPU_LOONGSON2
1171 select ARCH_REQUIRE_GPIOLIB
1173 The Loongson 2F processor implements the MIPS III instruction set
1174 with many extensions.
1176 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1177 have a similar programming interface with FPGA northbridge used in
1180 config CPU_MIPS32_R1
1181 bool "MIPS32 Release 1"
1182 depends on SYS_HAS_CPU_MIPS32_R1
1183 select CPU_HAS_PREFETCH
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1187 Choose this option to build a kernel for release 1 or later of the
1188 MIPS32 architecture. Most modern embedded systems with a 32-bit
1189 MIPS processor are based on a MIPS32 processor. If you know the
1190 specific type of processor in your system, choose those that one
1191 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1192 Release 2 of the MIPS32 architecture is available since several
1193 years so chances are you even have a MIPS32 Release 2 processor
1194 in which case you should choose CPU_MIPS32_R2 instead for better
1197 config CPU_MIPS32_R2
1198 bool "MIPS32 Release 2"
1199 depends on SYS_HAS_CPU_MIPS32_R2
1200 select CPU_HAS_PREFETCH
1201 select CPU_SUPPORTS_32BIT_KERNEL
1202 select CPU_SUPPORTS_HIGHMEM
1204 Choose this option to build a kernel for release 2 or later of the
1205 MIPS32 architecture. Most modern embedded systems with a 32-bit
1206 MIPS processor are based on a MIPS32 processor. If you know the
1207 specific type of processor in your system, choose those that one
1208 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1210 config CPU_MIPS64_R1
1211 bool "MIPS64 Release 1"
1212 depends on SYS_HAS_CPU_MIPS64_R1
1213 select CPU_HAS_PREFETCH
1214 select CPU_SUPPORTS_32BIT_KERNEL
1215 select CPU_SUPPORTS_64BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1217 select CPU_SUPPORTS_HUGEPAGES
1219 Choose this option to build a kernel for release 1 or later of the
1220 MIPS64 architecture. Many modern embedded systems with a 64-bit
1221 MIPS processor are based on a MIPS64 processor. If you know the
1222 specific type of processor in your system, choose those that one
1223 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1224 Release 2 of the MIPS64 architecture is available since several
1225 years so chances are you even have a MIPS64 Release 2 processor
1226 in which case you should choose CPU_MIPS64_R2 instead for better
1229 config CPU_MIPS64_R2
1230 bool "MIPS64 Release 2"
1231 depends on SYS_HAS_CPU_MIPS64_R2
1232 select CPU_HAS_PREFETCH
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1235 select CPU_SUPPORTS_HIGHMEM
1236 select CPU_SUPPORTS_HUGEPAGES
1238 Choose this option to build a kernel for release 2 or later of the
1239 MIPS64 architecture. Many modern embedded systems with a 64-bit
1240 MIPS processor are based on a MIPS64 processor. If you know the
1241 specific type of processor in your system, choose those that one
1242 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1246 depends on SYS_HAS_CPU_R3000
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_HIGHMEM
1251 Please make sure to pick the right CPU type. Linux/MIPS is not
1252 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1253 *not* work on R4000 machines and vice versa. However, since most
1254 of the supported machines have an R4000 (or similar) CPU, R4x00
1255 might be a safe bet. If the resulting kernel does not work,
1256 try to recompile with R3000.
1260 depends on SYS_HAS_CPU_TX39XX
1261 select CPU_SUPPORTS_32BIT_KERNEL
1265 depends on SYS_HAS_CPU_VR41XX
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1269 The options selects support for the NEC VR4100 series of processors.
1270 Only choose this option if you have one of these processors as a
1271 kernel built with this option will not run on any other type of
1272 processor or vice versa.
1276 depends on SYS_HAS_CPU_R4300
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1280 MIPS Technologies R4300-series processors.
1284 depends on SYS_HAS_CPU_R4X00
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1288 MIPS Technologies R4000-series processors other than 4300, including
1289 the R4000, R4400, R4600, and 4700.
1293 depends on SYS_HAS_CPU_TX49XX
1294 select CPU_HAS_PREFETCH
1295 select CPU_SUPPORTS_32BIT_KERNEL
1296 select CPU_SUPPORTS_64BIT_KERNEL
1300 depends on SYS_HAS_CPU_R5000
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1304 MIPS Technologies R5000-series processors other than the Nevada.
1308 depends on SYS_HAS_CPU_R5432
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1314 depends on SYS_HAS_CPU_R5500
1315 select CPU_SUPPORTS_32BIT_KERNEL
1316 select CPU_SUPPORTS_64BIT_KERNEL
1317 select CPU_SUPPORTS_HUGEPAGES
1319 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1324 depends on EXPERIMENTAL
1325 depends on SYS_HAS_CPU_R6000
1326 select CPU_SUPPORTS_32BIT_KERNEL
1328 MIPS Technologies R6000 and R6000A series processors. Note these
1329 processors are extremely rare and the support for them is incomplete.
1333 depends on SYS_HAS_CPU_NEVADA
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1337 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1341 depends on EXPERIMENTAL
1342 depends on SYS_HAS_CPU_R8000
1343 select CPU_HAS_PREFETCH
1344 select CPU_SUPPORTS_64BIT_KERNEL
1346 MIPS Technologies R8000 processors. Note these processors are
1347 uncommon and the support for them is incomplete.
1351 depends on SYS_HAS_CPU_R10000
1352 select CPU_HAS_PREFETCH
1353 select CPU_SUPPORTS_32BIT_KERNEL
1354 select CPU_SUPPORTS_64BIT_KERNEL
1355 select CPU_SUPPORTS_HIGHMEM
1357 MIPS Technologies R10000-series processors.
1361 depends on SYS_HAS_CPU_RM7000
1362 select CPU_HAS_PREFETCH
1363 select CPU_SUPPORTS_32BIT_KERNEL
1364 select CPU_SUPPORTS_64BIT_KERNEL
1365 select CPU_SUPPORTS_HIGHMEM
1369 depends on SYS_HAS_CPU_RM9000
1370 select CPU_HAS_PREFETCH
1371 select CPU_SUPPORTS_32BIT_KERNEL
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1374 select WEAK_ORDERING
1378 depends on SYS_HAS_CPU_SB1
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select CPU_SUPPORTS_64BIT_KERNEL
1381 select CPU_SUPPORTS_HIGHMEM
1382 select WEAK_ORDERING
1384 config CPU_CAVIUM_OCTEON
1385 bool "Cavium Octeon processor"
1386 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1387 select CPU_HAS_PREFETCH
1388 select CPU_SUPPORTS_64BIT_KERNEL
1389 select SYS_SUPPORTS_SMP
1390 select NR_CPUS_DEFAULT_16
1391 select WEAK_ORDERING
1392 select CPU_SUPPORTS_HIGHMEM
1393 select CPU_SUPPORTS_HUGEPAGES
1395 The Cavium Octeon processor is a highly integrated chip containing
1396 many ethernet hardware widgets for networking tasks. The processor
1397 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1398 Full details can be found at http://www.caviumnetworks.com.
1400 config CPU_BMIPS3300
1402 depends on SYS_HAS_CPU_BMIPS3300
1403 select DMA_NONCOHERENT
1405 select SWAP_IO_SPACE
1406 select SYS_SUPPORTS_32BIT_KERNEL
1407 select WEAK_ORDERING
1409 Broadcom BMIPS3300 processors.
1411 config CPU_BMIPS4350
1413 depends on SYS_HAS_CPU_BMIPS4350
1414 select CPU_SUPPORTS_32BIT_KERNEL
1415 select DMA_NONCOHERENT
1417 select SWAP_IO_SPACE
1418 select SYS_SUPPORTS_SMP
1419 select SYS_SUPPORTS_HOTPLUG_CPU
1420 select WEAK_ORDERING
1422 Broadcom BMIPS4350 ("VIPER") processors.
1424 config CPU_BMIPS4380
1426 depends on SYS_HAS_CPU_BMIPS4380
1427 select CPU_SUPPORTS_32BIT_KERNEL
1428 select DMA_NONCOHERENT
1430 select SWAP_IO_SPACE
1431 select SYS_SUPPORTS_SMP
1432 select SYS_SUPPORTS_HOTPLUG_CPU
1433 select WEAK_ORDERING
1435 Broadcom BMIPS4380 processors.
1437 config CPU_BMIPS5000
1439 depends on SYS_HAS_CPU_BMIPS5000
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_HIGHMEM
1442 select DMA_NONCOHERENT
1444 select SWAP_IO_SPACE
1445 select SYS_SUPPORTS_SMP
1446 select SYS_SUPPORTS_HOTPLUG_CPU
1447 select WEAK_ORDERING
1449 Broadcom BMIPS5000 processors.
1452 bool "Netlogic XLR SoC"
1453 depends on SYS_HAS_CPU_XLR
1454 select CPU_SUPPORTS_32BIT_KERNEL
1455 select CPU_SUPPORTS_64BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1457 select WEAK_ORDERING
1458 select WEAK_REORDERING_BEYOND_LLSC
1459 select CPU_SUPPORTS_HUGEPAGES
1461 Netlogic Microsystems XLR/XLS processors.
1465 config CPU_NOP_WORKAROUNDS
1468 config CPU_JUMP_WORKAROUNDS
1471 config CPU_LOONGSON2F_WORKAROUNDS
1472 bool "Loongson 2F Workarounds"
1474 select CPU_NOP_WORKAROUNDS
1475 select CPU_JUMP_WORKAROUNDS
1477 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1478 require workarounds. Without workarounds the system may hang
1479 unexpectedly. For more information please refer to the gas
1480 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1482 Loongson 2F03 and later have fixed these issues and no workarounds
1483 are needed. The workarounds have no significant side effect on them
1484 but may decrease the performance of the system so this option should
1485 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1488 If unsure, please say Y.
1489 endif # CPU_LOONGSON2F
1491 config SYS_SUPPORTS_ZBOOT
1493 select HAVE_KERNEL_GZIP
1494 select HAVE_KERNEL_BZIP2
1495 select HAVE_KERNEL_LZMA
1496 select HAVE_KERNEL_LZO
1498 config SYS_SUPPORTS_ZBOOT_UART16550
1500 select SYS_SUPPORTS_ZBOOT
1502 config CPU_LOONGSON2
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_64BIT_KERNEL
1506 select CPU_SUPPORTS_HIGHMEM
1508 config SYS_HAS_CPU_LOONGSON2E
1511 config SYS_HAS_CPU_LOONGSON2F
1513 select CPU_SUPPORTS_CPUFREQ
1514 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1515 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1517 config SYS_HAS_CPU_MIPS32_R1
1520 config SYS_HAS_CPU_MIPS32_R2
1523 config SYS_HAS_CPU_MIPS64_R1
1526 config SYS_HAS_CPU_MIPS64_R2
1529 config SYS_HAS_CPU_R3000
1532 config SYS_HAS_CPU_TX39XX
1535 config SYS_HAS_CPU_VR41XX
1538 config SYS_HAS_CPU_R4300
1541 config SYS_HAS_CPU_R4X00
1544 config SYS_HAS_CPU_TX49XX
1547 config SYS_HAS_CPU_R5000
1550 config SYS_HAS_CPU_R5432
1553 config SYS_HAS_CPU_R5500
1556 config SYS_HAS_CPU_R6000
1559 config SYS_HAS_CPU_NEVADA
1562 config SYS_HAS_CPU_R8000
1565 config SYS_HAS_CPU_R10000
1568 config SYS_HAS_CPU_RM7000
1571 config SYS_HAS_CPU_RM9000
1574 config SYS_HAS_CPU_SB1
1577 config SYS_HAS_CPU_CAVIUM_OCTEON
1580 config SYS_HAS_CPU_BMIPS3300
1583 config SYS_HAS_CPU_BMIPS4350
1586 config SYS_HAS_CPU_BMIPS4380
1589 config SYS_HAS_CPU_BMIPS5000
1592 config SYS_HAS_CPU_XLR
1596 # CPU may reorder R->R, R->W, W->R, W->W
1597 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1599 config WEAK_ORDERING
1603 # CPU may reorder reads and writes beyond LL/SC
1604 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1606 config WEAK_REORDERING_BEYOND_LLSC
1611 # These two indicate any level of the MIPS32 and MIPS64 architecture
1615 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1619 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1622 # These two indicate the revision of the architecture, either Release 1 or Release 2
1626 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1630 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1632 config SYS_SUPPORTS_32BIT_KERNEL
1634 config SYS_SUPPORTS_64BIT_KERNEL
1636 config CPU_SUPPORTS_32BIT_KERNEL
1638 config CPU_SUPPORTS_64BIT_KERNEL
1640 config CPU_SUPPORTS_CPUFREQ
1642 config CPU_SUPPORTS_ADDRWINCFG
1644 config CPU_SUPPORTS_HUGEPAGES
1646 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1648 config MIPS_PGD_C0_CONTEXT
1650 default y if 64BIT && CPU_MIPSR2
1653 # Set to y for ptrace access to watch registers.
1655 config HARDWARE_WATCHPOINTS
1657 default y if CPU_MIPSR1 || CPU_MIPSR2
1663 prompt "Kernel code model"
1665 You should only select this option if you have a workload that
1666 actually benefits from 64-bit processing or if your machine has
1667 large memory. You will only be presented a single option in this
1668 menu if your system does not support both 32-bit and 64-bit kernels.
1671 bool "32-bit kernel"
1672 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1675 Select this option if you want to build a 32-bit kernel.
1677 bool "64-bit kernel"
1678 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1679 select HAVE_SYSCALL_WRAPPERS
1681 Select this option if you want to build a 64-bit kernel.
1686 prompt "Kernel page size"
1687 default PAGE_SIZE_4KB
1689 config PAGE_SIZE_4KB
1691 depends on !CPU_LOONGSON2
1693 This option select the standard 4kB Linux page size. On some
1694 R3000-family processors this is the only available page size. Using
1695 4kB page size will minimize memory consumption and is therefore
1696 recommended for low memory systems.
1698 config PAGE_SIZE_8KB
1700 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1702 Using 8kB page size will result in higher performance kernel at
1703 the price of higher memory consumption. This option is available
1704 only on R8000 and cnMIPS processors. Note that you will need a
1705 suitable Linux distribution to support this.
1707 config PAGE_SIZE_16KB
1709 depends on !CPU_R3000 && !CPU_TX39XX
1711 Using 16kB page size will result in higher performance kernel at
1712 the price of higher memory consumption. This option is available on
1713 all non-R3000 family processors. Note that you will need a suitable
1714 Linux distribution to support this.
1716 config PAGE_SIZE_32KB
1718 depends on CPU_CAVIUM_OCTEON
1720 Using 32kB page size will result in higher performance kernel at
1721 the price of higher memory consumption. This option is available
1722 only on cnMIPS cores. Note that you will need a suitable Linux
1723 distribution to support this.
1725 config PAGE_SIZE_64KB
1727 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1729 Using 64kB page size will result in higher performance kernel at
1730 the price of higher memory consumption. This option is available on
1731 all non-R3000 family processor. Not that at the time of this
1732 writing this option is still high experimental.
1736 config FORCE_MAX_ZONEORDER
1737 int "Maximum zone order"
1738 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1739 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1740 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1741 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1745 The kernel memory allocator divides physically contiguous memory
1746 blocks into "zones", where each zone is a power of two number of
1747 pages. This option selects the largest power of two that the kernel
1748 keeps in the memory allocator. If you need to allocate very large
1749 blocks of physically contiguous memory, then you may need to
1750 increase this value.
1752 This config option is actually maximum order plus one. For example,
1753 a value of 11 means that the largest free memory block is 2^10 pages.
1755 The page size is not necessarily 4KB. Keep this in mind
1756 when choosing a value for this option.
1761 config IP22_CPU_SCACHE
1766 # Support for a MIPS32 / MIPS64 style S-caches
1768 config MIPS_CPU_SCACHE
1772 config R5000_CPU_SCACHE
1776 config RM7000_CPU_SCACHE
1780 config SIBYTE_DMA_PAGEOPS
1781 bool "Use DMA to clear/copy pages"
1784 Instead of using the CPU to zero and copy pages, use a Data Mover
1785 channel. These DMA channels are otherwise unused by the standard
1786 SiByte Linux port. Seems to give a small performance benefit.
1788 config CPU_HAS_PREFETCH
1792 prompt "MIPS MT options"
1794 config MIPS_MT_DISABLED
1795 bool "Disable multithreading support."
1797 Use this option if your workload can't take advantage of
1798 MIPS hardware multithreading support. On systems that don't have
1799 the option of an MT-enabled processor this option will be the only
1800 option in this menu.
1803 bool "Use 1 TC on each available VPE for SMP"
1804 depends on SYS_SUPPORTS_MULTITHREADING
1805 select CPU_MIPSR2_IRQ_VI
1806 select CPU_MIPSR2_IRQ_EI
1808 select NR_CPUS_DEFAULT_2
1810 select SYS_SUPPORTS_SCHED_SMT if SMP
1811 select SYS_SUPPORTS_SMP
1814 This is a kernel model which is known a VSMP but lately has been
1815 marketesed into SMVP.
1816 Virtual SMP uses the processor's VPEs to implement virtual
1817 processors. In currently available configuration of the 34K processor
1818 this allows for a dual processor. Both processors will share the same
1819 primary caches; each will obtain the half of the TLB for it's own
1820 exclusive use. For a layman this model can be described as similar to
1821 what Intel calls Hyperthreading.
1823 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1826 bool "SMTC: Use all TCs on all VPEs for SMP"
1827 depends on CPU_MIPS32_R2
1828 #depends on CPU_MIPS64_R2 # once there is hardware ...
1829 depends on SYS_SUPPORTS_MULTITHREADING
1830 select CPU_MIPSR2_IRQ_VI
1831 select CPU_MIPSR2_IRQ_EI
1833 select NR_CPUS_DEFAULT_8
1835 select SYS_SUPPORTS_SMP
1838 This is a kernel model which is known a SMTC or lately has been
1839 marketesed into SMVP.
1840 is presenting the available TC's of the core as processors to Linux.
1841 On currently available 34K processors this means a Linux system will
1842 see up to 5 processors. The implementation of the SMTC kernel differs
1843 significantly from VSMP and cannot efficiently coexist in the same
1844 kernel binary so the choice between VSMP and SMTC is a compile time
1847 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1855 bool "SMT (multithreading) scheduler support"
1856 depends on SYS_SUPPORTS_SCHED_SMT
1859 SMT scheduler support improves the CPU scheduler's decision making
1860 when dealing with MIPS MT enabled cores at a cost of slightly
1861 increased overhead in some places. If unsure say N here.
1863 config SYS_SUPPORTS_SCHED_SMT
1867 config SYS_SUPPORTS_MULTITHREADING
1870 config MIPS_MT_FPAFF
1871 bool "Dynamic FPU affinity for FP-intensive threads"
1873 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1875 config MIPS_VPE_LOADER
1876 bool "VPE loader support."
1877 depends on SYS_SUPPORTS_MULTITHREADING
1878 select CPU_MIPSR2_IRQ_VI
1879 select CPU_MIPSR2_IRQ_EI
1882 Includes a loader for loading an elf relocatable object
1883 onto another VPE and running it.
1885 config MIPS_MT_SMTC_IM_BACKSTOP
1886 bool "Use per-TC register bits as backstop for inhibited IM bits"
1887 depends on MIPS_MT_SMTC
1890 To support multiple TC microthreads acting as "CPUs" within
1891 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1892 during interrupt handling. To support legacy drivers and interrupt
1893 controller management code, SMTC has a "backstop" to track and
1894 if necessary restore the interrupt mask. This has some performance
1895 impact on interrupt service overhead.
1897 config MIPS_MT_SMTC_IRQAFF
1898 bool "Support IRQ affinity API"
1899 depends on MIPS_MT_SMTC
1902 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1903 for SMTC Linux kernel. Requires platform support, of which
1904 an example can be found in the MIPS kernel i8259 and Malta
1905 platform code. Adds some overhead to interrupt dispatch, and
1906 should be used only if you know what you are doing.
1908 config MIPS_VPE_LOADER_TOM
1909 bool "Load VPE program into memory hidden from linux"
1910 depends on MIPS_VPE_LOADER
1913 The loader can use memory that is present but has been hidden from
1914 Linux using the kernel command line option "mem=xxMB". It's up to
1915 you to ensure the amount you put in the option and the space your
1916 program requires is less or equal to the amount physically present.
1918 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1919 config MIPS_VPE_APSP_API
1920 bool "Enable support for AP/SP API (RTLX)"
1921 depends on MIPS_VPE_LOADER
1924 config MIPS_APSP_KSPD
1926 depends on MIPS_VPE_APSP_API
1929 KSPD is a kernel daemon that accepts syscall requests from the SP
1930 side, actions them and returns the results. It also handles the
1931 "exit" syscall notifying other kernel modules the SP program is
1932 exiting. You probably want to say yes here.
1935 bool "MIPS CMP framework support"
1936 depends on SYS_SUPPORTS_MIPS_CMP
1938 select SYS_SUPPORTS_SMP
1939 select SYS_SUPPORTS_SCHED_SMT if SMP
1940 select WEAK_ORDERING
1943 This is a placeholder option for the GCMP work. It will need to
1944 be handled differently...
1946 config SB1_PASS_1_WORKAROUNDS
1948 depends on CPU_SB1_PASS_1
1951 config SB1_PASS_2_WORKAROUNDS
1953 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1956 config SB1_PASS_2_1_WORKAROUNDS
1958 depends on CPU_SB1 && CPU_SB1_PASS_2
1961 config 64BIT_PHYS_ADDR
1964 config ARCH_PHYS_ADDR_T_64BIT
1965 def_bool 64BIT_PHYS_ADDR
1967 config CPU_HAS_SMARTMIPS
1968 depends on SYS_SUPPORTS_SMARTMIPS
1969 bool "Support for the SmartMIPS ASE"
1971 SmartMIPS is a extension of the MIPS32 architecture aimed at
1972 increased security at both hardware and software level for
1973 smartcards. Enabling this option will allow proper use of the
1974 SmartMIPS instructions by Linux applications. However a kernel with
1975 this option will not work on a MIPS core without SmartMIPS core. If
1976 you don't know you probably don't have SmartMIPS and should say N
1983 # Vectored interrupt mode is an R2 feature
1985 config CPU_MIPSR2_IRQ_VI
1989 # Extended interrupt mode is an R2 feature
1991 config CPU_MIPSR2_IRQ_EI
1996 depends on !CPU_R3000
1999 config GENERIC_CLOCKEVENTS_BROADCAST
2005 config CPU_DADDI_WORKAROUNDS
2008 config CPU_R4000_WORKAROUNDS
2010 select CPU_R4400_WORKAROUNDS
2012 config CPU_R4400_WORKAROUNDS
2016 # - Highmem only makes sense for the 32-bit kernel.
2017 # - The current highmem code will only work properly on physically indexed
2018 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2019 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2020 # moment we protect the user and offer the highmem option only on machines
2021 # where it's known to be safe. This will not offer highmem on a few systems
2022 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2023 # indexed CPUs but we're playing safe.
2024 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2025 # know they might have memory configurations that could make use of highmem
2029 bool "High Memory Support"
2030 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2032 config CPU_SUPPORTS_HIGHMEM
2035 config SYS_SUPPORTS_HIGHMEM
2038 config SYS_SUPPORTS_SMARTMIPS
2041 config ARCH_FLATMEM_ENABLE
2043 depends on !NUMA && !CPU_LOONGSON2
2045 config ARCH_DISCONTIGMEM_ENABLE
2047 default y if SGI_IP27
2049 Say Y to support efficient handling of discontiguous physical memory,
2050 for architectures which are either NUMA (Non-Uniform Memory Access)
2051 or have huge holes in the physical address space for other reasons.
2052 See <file:Documentation/vm/numa> for more.
2054 config ARCH_POPULATES_NODE_MAP
2057 config ARCH_SPARSEMEM_ENABLE
2059 select SPARSEMEM_STATIC
2063 depends on SYS_SUPPORTS_NUMA
2065 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2066 Access). This option improves performance on systems with more
2067 than two nodes; on two node systems it is generally better to
2068 leave it disabled; on single node systems disable this option
2071 config SYS_SUPPORTS_NUMA
2077 depends on NEED_MULTIPLE_NODES
2079 config HW_PERF_EVENTS
2080 bool "Enable hardware performance counter support for perf events"
2081 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2084 Enable hardware performance counter support for perf events. If
2085 disabled, perf events will use software events only.
2090 bool "Multi-Processing support"
2091 depends on SYS_SUPPORTS_SMP
2093 select USE_GENERIC_SMP_HELPERS
2095 This enables support for systems with more than one CPU. If you have
2096 a system with only one CPU, like most personal computers, say N. If
2097 you have a system with more than one CPU, say Y.
2099 If you say N here, the kernel will run on single and multiprocessor
2100 machines, but will use only one CPU of a multiprocessor machine. If
2101 you say Y here, the kernel will run on many, but not all,
2102 singleprocessor machines. On a singleprocessor machine, the kernel
2103 will run faster if you say N here.
2105 People using multiprocessor machines who say Y here should also say
2106 Y to "Enhanced Real Time Clock Support", below.
2108 See also the SMP-HOWTO available at
2109 <http://www.tldp.org/docs.html#howto>.
2111 If you don't know what to do here, say N.
2116 config SYS_SUPPORTS_MIPS_CMP
2119 config SYS_SUPPORTS_SMP
2122 config NR_CPUS_DEFAULT_1
2125 config NR_CPUS_DEFAULT_2
2128 config NR_CPUS_DEFAULT_4
2131 config NR_CPUS_DEFAULT_8
2134 config NR_CPUS_DEFAULT_16
2137 config NR_CPUS_DEFAULT_32
2140 config NR_CPUS_DEFAULT_64
2144 int "Maximum number of CPUs (2-64)"
2145 range 1 64 if NR_CPUS_DEFAULT_1
2147 default "1" if NR_CPUS_DEFAULT_1
2148 default "2" if NR_CPUS_DEFAULT_2
2149 default "4" if NR_CPUS_DEFAULT_4
2150 default "8" if NR_CPUS_DEFAULT_8
2151 default "16" if NR_CPUS_DEFAULT_16
2152 default "32" if NR_CPUS_DEFAULT_32
2153 default "64" if NR_CPUS_DEFAULT_64
2155 This allows you to specify the maximum number of CPUs which this
2156 kernel will support. The maximum supported value is 32 for 32-bit
2157 kernel and 64 for 64-bit kernels; the minimum value which makes
2158 sense is 1 for Qemu (useful only for kernel debugging purposes)
2159 and 2 for all others.
2161 This is purely to save memory - each supported CPU adds
2162 approximately eight kilobytes to the kernel image. For best
2163 performance should round up your number of processors to the next
2166 source "kernel/time/Kconfig"
2169 # Timer Interrupt Frequency Configuration
2173 prompt "Timer frequency"
2176 Allows the configuration of the timer frequency.
2179 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2182 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2185 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2188 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2191 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2194 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2197 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2201 config SYS_SUPPORTS_48HZ
2204 config SYS_SUPPORTS_100HZ
2207 config SYS_SUPPORTS_128HZ
2210 config SYS_SUPPORTS_250HZ
2213 config SYS_SUPPORTS_256HZ
2216 config SYS_SUPPORTS_1000HZ
2219 config SYS_SUPPORTS_1024HZ
2222 config SYS_SUPPORTS_ARBIT_HZ
2224 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2225 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2226 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2227 !SYS_SUPPORTS_1024HZ
2232 default 100 if HZ_100
2233 default 128 if HZ_128
2234 default 250 if HZ_250
2235 default 256 if HZ_256
2236 default 1000 if HZ_1000
2237 default 1024 if HZ_1024
2239 source "kernel/Kconfig.preempt"
2241 config MIPS_INSANE_LARGE
2242 bool "Support for large 64-bit configurations"
2243 depends on CPU_R10000 && 64BIT
2245 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2246 previous 64-bit processors which only supported 40 bit / 1TB. If you
2247 need processes of more than 1TB virtual address space, say Y here.
2248 This will result in additional memory usage, so it is not
2249 recommended for normal users.
2252 bool "Kexec system call (EXPERIMENTAL)"
2253 depends on EXPERIMENTAL
2255 kexec is a system call that implements the ability to shutdown your
2256 current kernel, and to start another kernel. It is like a reboot
2257 but it is independent of the system firmware. And like a reboot
2258 you can start any kernel with it, not just Linux.
2260 The name comes from the similarity to the exec system call.
2262 It is an ongoing process to be certain the hardware in a machine
2263 is properly shutdown, so do not be surprised if this code does not
2264 initially work for you. It may help to enable device hotplugging
2265 support. As of this writing the exact hardware interface is
2266 strongly in flux, so no good recommendation can be made.
2269 bool "Enable seccomp to safely compute untrusted bytecode"
2273 This kernel feature is useful for number crunching applications
2274 that may need to compute untrusted bytecode during their
2275 execution. By using pipes or other transports made available to
2276 the process as file descriptors supporting the read/write
2277 syscalls, it's possible to isolate those applications in
2278 their own address space using seccomp. Once seccomp is
2279 enabled via /proc/<pid>/seccomp, it cannot be disabled
2280 and the task is only allowed to execute a few safe syscalls
2281 defined by each seccomp mode.
2283 If unsure, say Y. Only embedded should say N here.
2286 bool "Flattened Device Tree support"
2288 select OF_EARLY_FLATTREE
2290 Include support for flattened device tree machine descriptions.
2294 config LOCKDEP_SUPPORT
2298 config STACKTRACE_SUPPORT
2302 source "init/Kconfig"
2304 source "kernel/Kconfig.freezer"
2306 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2314 bool "Support for PCI controller"
2315 depends on HW_HAS_PCI
2318 Find out whether you have a PCI motherboard. PCI is the name of a
2319 bus system, i.e. the way the CPU talks to the other stuff inside
2320 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2326 source "drivers/pci/Kconfig"
2329 # ISA support is now enabled via select. Too many systems still have the one
2330 # or other ISA chip on the board that users don't know about so don't expect
2331 # users to choose the right thing ...
2338 depends on HW_HAS_EISA
2340 select GENERIC_ISA_DMA
2342 The Extended Industry Standard Architecture (EISA) bus was
2343 developed as an open alternative to the IBM MicroChannel bus.
2345 The EISA bus provided some of the features of the IBM MicroChannel
2346 bus while maintaining backward compatibility with cards made for
2347 the older ISA bus. The EISA bus saw limited use between 1988 and
2348 1995 when it was made obsolete by the PCI bus.
2350 Say Y here if you are building a kernel for an EISA-based machine.
2354 source "drivers/eisa/Kconfig"
2357 bool "TURBOchannel support"
2358 depends on MACH_DECSTATION
2360 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2361 processors. TURBOchannel programming specifications are available
2363 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2365 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2366 Linux driver support status is documented at:
2367 <http://www.linux-mips.org/wiki/DECstation>
2370 # bool "Access.Bus support"
2379 select MIPS_EXTERNAL_TIMER
2384 source "drivers/pcmcia/Kconfig"
2386 source "drivers/pci/hotplug/Kconfig"
2389 bool "RapidIO support"
2393 If you say Y here, the kernel will include drivers and
2394 infrastructure code to support RapidIO interconnect devices.
2396 source "drivers/rapidio/Kconfig"
2400 menu "Executable file formats"
2402 source "fs/Kconfig.binfmt"
2407 config MIPS32_COMPAT
2408 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2411 Select this option if you want Linux/MIPS 32-bit binary
2412 compatibility. Since all software available for Linux/MIPS is
2413 currently 32-bit you should say Y here.
2417 depends on MIPS32_COMPAT
2420 config SYSVIPC_COMPAT
2422 depends on COMPAT && SYSVIPC
2426 bool "Kernel support for o32 binaries"
2427 depends on MIPS32_COMPAT
2429 Select this option if you want to run o32 binaries. These are pure
2430 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2431 existing binaries are in this format.
2436 bool "Kernel support for n32 binaries"
2437 depends on MIPS32_COMPAT
2439 Select this option if you want to run n32 binaries. These are
2440 64-bit binaries using 32-bit quantities for addressing and certain
2441 data that would normally be 64-bit. They are used in special
2448 default y if MIPS32_O32 || MIPS32_N32
2452 menu "Power management options"
2454 config ARCH_HIBERNATION_POSSIBLE
2456 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2458 config ARCH_SUSPEND_POSSIBLE
2460 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2462 source "kernel/power/Kconfig"
2466 source "arch/mips/kernel/cpufreq/Kconfig"
2468 source "net/Kconfig"
2470 source "drivers/Kconfig"
2474 source "arch/mips/Kconfig.debug"
2476 source "security/Kconfig"
2478 source "crypto/Kconfig"
2480 menuconfig VIRTUALIZATION
2481 bool "Virtualization"
2484 Say Y here to get to see options for using your Linux host to run other
2485 operating systems inside virtual machines (guests).
2486 This option alone does not add any kernel code.
2488 If you say N, all options in this submenu will be skipped and disabled.
2492 source drivers/virtio/Kconfig
2494 endif # VIRTUALIZATION
2496 source "lib/Kconfig"