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 ARCH_BINFMT_ELF_RANDOMIZE_PIE
20 select RTC_LIB if !MACH_LOONGSON
21 select GENERIC_ATOMIC64 if !64BIT
23 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_HARDIRQS
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select HAVE_ARCH_JUMP_LABEL
28 select IRQ_FORCED_THREADING
30 select HAVE_MEMBLOCK_NODE_MAP
31 select ARCH_DISCARD_MEMBLOCK
32 select GENERIC_CLOCKEVENTS
33 select GENERIC_CMOS_UPDATE
35 menu "Machine selection"
45 bool "Alchemy processor based machines"
46 select 64BIT_PHYS_ADDR
50 select SYS_HAS_CPU_MIPS32_R1
51 select SYS_SUPPORTS_32BIT_KERNEL
52 select SYS_SUPPORTS_APM_EMULATION
54 select ARCH_WANT_OPTIONAL_GPIOLIB
55 select SYS_SUPPORTS_ZBOOT
56 select USB_ARCH_HAS_OHCI
57 select USB_ARCH_HAS_EHCI
60 bool "Texas Instruments AR7"
62 select DMA_NONCOHERENT
68 select SYS_HAS_CPU_MIPS32_R1
69 select SYS_HAS_EARLY_PRINTK
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_LITTLE_ENDIAN
72 select SYS_SUPPORTS_ZBOOT_UART16550
73 select ARCH_REQUIRE_GPIOLIB
76 Support for the Texas Instruments AR7 System-on-a-Chip
77 family: TNETD7100, 7200 and 7300.
80 bool "Atheros AR71XX/AR724X/AR913X based boards"
81 select ARCH_REQUIRE_GPIOLIB
85 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R2
89 select SYS_HAS_EARLY_PRINTK
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_BIG_ENDIAN
93 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
96 bool "Broadcom BCM47XX based boards"
99 select DMA_NONCOHERENT
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_LITTLE_ENDIAN
105 select SYS_HAS_EARLY_PRINTK
108 Support for BCM47XX based boards
111 bool "Broadcom BCM63XX based boards"
114 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_HAS_EARLY_PRINTK
121 select ARCH_REQUIRE_GPIOLIB
123 Support for BCM63XX based boards
130 select DMA_NONCOHERENT
136 select PCI_GT64XXX_PCI0
138 select SYS_HAS_CPU_NEVADA
139 select SYS_HAS_EARLY_PRINTK
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_64BIT_KERNEL
142 select SYS_SUPPORTS_LITTLE_ENDIAN
144 config MACH_DECSTATION
151 select CPU_DADDI_WORKAROUNDS if 64BIT
152 select CPU_R4000_WORKAROUNDS if 64BIT
153 select CPU_R4400_WORKAROUNDS if 64BIT
154 select DMA_NONCOHERENT
157 select SYS_HAS_CPU_R3000
158 select SYS_HAS_CPU_R4X00
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_128HZ
163 select SYS_SUPPORTS_256HZ
164 select SYS_SUPPORTS_1024HZ
166 This enables support for DEC's MIPS based workstations. For details
167 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
168 DECstation porting pages on <http://decstation.unix-ag.org/>.
170 If you have one of the following DECstation Models you definitely
171 want to choose R4xx0 for the CPU Type:
178 otherwise choose R3000.
181 bool "Jazz family of machines"
184 select ARCH_MAY_HAVE_PC_FDC
187 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
188 select GENERIC_ISA_DMA
189 select HAVE_PCSPKR_PLATFORM
194 select SYS_HAS_CPU_R4X00
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
197 select SYS_SUPPORTS_100HZ
199 This a family of machines based on the MIPS R4030 chipset which was
200 used by several vendors to build RISC/os and Windows NT workstations.
201 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
202 Olivetti M700-10 workstations.
205 bool "Ingenic JZ4740 based machines"
206 select SYS_HAS_CPU_MIPS32_R1
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_LITTLE_ENDIAN
209 select DMA_NONCOHERENT
212 select ARCH_REQUIRE_GPIOLIB
213 select SYS_HAS_EARLY_PRINTK
216 select GENERIC_IRQ_CHIP
219 bool "Lantiq based platforms"
220 select DMA_NONCOHERENT
224 select SYS_HAS_CPU_MIPS32_R1
225 select SYS_HAS_CPU_MIPS32_R2
226 select SYS_SUPPORTS_BIG_ENDIAN
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_MULTITHREADING
229 select SYS_HAS_EARLY_PRINTK
230 select ARCH_REQUIRE_GPIOLIB
237 bool "LASAT Networks platforms"
240 select DMA_NONCOHERENT
241 select SYS_HAS_EARLY_PRINTK
244 select PCI_GT64XXX_PCI0
246 select R5000_CPU_SCACHE
247 select SYS_HAS_CPU_R5000
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
250 select SYS_SUPPORTS_LITTLE_ENDIAN
253 bool "Loongson family of machines"
254 select SYS_SUPPORTS_ZBOOT
256 This enables the support of Loongson family of machines.
258 Loongson is a family of general-purpose MIPS-compatible CPUs.
259 developed at Institute of Computing Technology (ICT),
260 Chinese Academy of Sciences (CAS) in the People's Republic
261 of China. The chief architect is Professor Weiwu Hu.
264 bool "MIPS Malta board"
265 select ARCH_MAY_HAVE_PC_FDC
270 select DMA_NONCOHERENT
271 select GENERIC_ISA_DMA
272 select HAVE_PCSPKR_PLATFORM
278 select MIPS_BOARDS_GEN
280 select MIPS_CPU_SCACHE
281 select PCI_GT64XXX_PCI0
284 select SYS_HAS_CPU_MIPS32_R1
285 select SYS_HAS_CPU_MIPS32_R2
286 select SYS_HAS_CPU_MIPS64_R1
287 select SYS_HAS_CPU_NEVADA
288 select SYS_HAS_CPU_RM7000
289 select SYS_HAS_EARLY_PRINTK
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_64BIT_KERNEL
292 select SYS_SUPPORTS_BIG_ENDIAN
293 select SYS_SUPPORTS_LITTLE_ENDIAN
294 select SYS_SUPPORTS_MIPS_CMP
295 select SYS_SUPPORTS_MULTITHREADING
296 select SYS_SUPPORTS_SMARTMIPS
297 select SYS_SUPPORTS_ZBOOT
299 This enables support for the MIPS Technologies Malta evaluation
303 bool 'MIPS simulator (MIPSsim)'
306 select DMA_NONCOHERENT
307 select SYS_HAS_EARLY_PRINTK
310 select SYS_HAS_CPU_MIPS32_R1
311 select SYS_HAS_CPU_MIPS32_R2
312 select SYS_HAS_EARLY_PRINTK
313 select SYS_SUPPORTS_32BIT_KERNEL
314 select SYS_SUPPORTS_BIG_ENDIAN
315 select SYS_SUPPORTS_MULTITHREADING
316 select SYS_SUPPORTS_LITTLE_ENDIAN
318 This option enables support for MIPS Technologies MIPSsim software
322 bool "NEC EMMA2RH Mark-eins board"
326 This enables support for the NEC Electronics Mark-eins boards.
329 bool "NEC VR4100 series based machines"
332 select SYS_HAS_CPU_VR41XX
333 select ARCH_REQUIRE_GPIOLIB
336 bool "NXP STB220 board"
339 Support for NXP Semiconductors STB220 Development Board.
346 Support for NXP Semiconductors STB225 Development Board.
349 bool "NXP PNX8550 based JBS board"
351 select SYS_SUPPORTS_LITTLE_ENDIAN
353 config PNX8550_STB810
354 bool "NXP PNX8550 based STB810 board"
356 select SYS_SUPPORTS_LITTLE_ENDIAN
359 bool "PMC-Sierra MSP chipsets"
360 depends on EXPERIMENTAL
363 select DMA_NONCOHERENT
365 select NO_EXCEPT_FILL
367 select SYS_HAS_CPU_MIPS32_R1
368 select SYS_HAS_CPU_MIPS32_R2
369 select SYS_SUPPORTS_32BIT_KERNEL
370 select SYS_SUPPORTS_BIG_ENDIAN
373 select SERIAL_8250_CONSOLE
375 This adds support for the PMC-Sierra family of Multi-Service
376 Processor System-On-A-Chips. These parts include a number
377 of integrated peripherals, interfaces and DSPs in addition to
378 a variety of MIPS cores.
381 bool "PMC-Sierra Yosemite eval board"
390 select SYS_HAS_CPU_RM9000
391 select SYS_HAS_EARLY_PRINTK
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_64BIT_KERNEL
394 select SYS_SUPPORTS_BIG_ENDIAN
395 select SYS_SUPPORTS_HIGHMEM
396 select SYS_SUPPORTS_SMP
398 Yosemite is an evaluation board for the RM9000x2 processor
399 manufactured by PMC-Sierra.
405 select CPU_MIPSR2_IRQ_VI
406 select CPU_MIPSR2_IRQ_EI
408 select DMA_NONCOHERENT
410 select SYS_HAS_EARLY_PRINTK
411 select SYS_HAS_CPU_MIPS32_R2
412 select SYS_SUPPORTS_32BIT_KERNEL
413 select SYS_SUPPORTS_BIG_ENDIAN
414 select SYS_SUPPORTS_HIGHMEM
415 select USB_OHCI_LITTLE_ENDIAN
417 This enables support for the Cisco PowerTV Platform.
420 bool "SGI IP22 (Indy/Indigo2)"
426 select DEFAULT_SGI_PARTITION
427 select DMA_NONCOHERENT
431 select IP22_CPU_SCACHE
433 select GENERIC_ISA_DMA_SUPPORT_BROKEN
435 select SGI_HAS_INDYDOG
441 select SYS_HAS_CPU_R4X00
442 select SYS_HAS_CPU_R5000
444 # Disable EARLY_PRINTK for now since it leads to overwritten prom
445 # memory during early boot on some machines.
447 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
448 # for a more details discussion
450 # select SYS_HAS_EARLY_PRINTK
451 select SYS_SUPPORTS_32BIT_KERNEL
452 select SYS_SUPPORTS_64BIT_KERNEL
453 select SYS_SUPPORTS_BIG_ENDIAN
455 This are the SGI Indy, Challenge S and Indigo2, as well as certain
456 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
457 that runs on these, say Y here.
460 bool "SGI IP27 (Origin200/2000)"
464 select DEFAULT_SGI_PARTITION
466 select SYS_HAS_EARLY_PRINTK
468 select NR_CPUS_DEFAULT_64
469 select SYS_HAS_CPU_R10000
470 select SYS_SUPPORTS_64BIT_KERNEL
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_NUMA
473 select SYS_SUPPORTS_SMP
475 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
476 workstations. To compile a Linux kernel that runs on these, say Y
480 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
481 depends on EXPERIMENTAL
487 select DEFAULT_SGI_PARTITION
488 select DMA_NONCOHERENT
489 select GENERIC_ISA_DMA_SUPPORT_BROKEN
495 select SGI_HAS_INDYDOG
501 select SYS_HAS_CPU_R10000
503 # Disable EARLY_PRINTK for now since it leads to overwritten prom
504 # memory during early boot on some machines.
506 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
507 # for a more details discussion
509 # select SYS_HAS_EARLY_PRINTK
510 select SYS_SUPPORTS_64BIT_KERNEL
511 select SYS_SUPPORTS_BIG_ENDIAN
513 This is the SGI Indigo2 with R10000 processor. To compile a Linux
514 kernel that runs on these, say Y here.
523 select DMA_NONCOHERENT
526 select R5000_CPU_SCACHE
527 select RM7000_CPU_SCACHE
528 select SYS_HAS_CPU_R5000
529 select SYS_HAS_CPU_R10000 if BROKEN
530 select SYS_HAS_CPU_RM7000
531 select SYS_HAS_CPU_NEVADA
532 select SYS_SUPPORTS_64BIT_KERNEL
533 select SYS_SUPPORTS_BIG_ENDIAN
535 If you want this kernel to run on SGI O2 workstation, say Y here.
538 bool "Sibyte BCM91120C-CRhine"
539 depends on EXPERIMENTAL
542 select SIBYTE_BCM1120
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_LITTLE_ENDIAN
549 bool "Sibyte BCM91120x-Carmel"
550 depends on EXPERIMENTAL
553 select SIBYTE_BCM1120
555 select SYS_HAS_CPU_SB1
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_LITTLE_ENDIAN
560 bool "Sibyte BCM91125C-CRhone"
561 depends on EXPERIMENTAL
564 select SIBYTE_BCM1125
566 select SYS_HAS_CPU_SB1
567 select SYS_SUPPORTS_BIG_ENDIAN
568 select SYS_SUPPORTS_HIGHMEM
569 select SYS_SUPPORTS_LITTLE_ENDIAN
572 bool "Sibyte BCM91125E-Rhone"
573 depends on EXPERIMENTAL
576 select SIBYTE_BCM1125H
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_LITTLE_ENDIAN
583 bool "Sibyte BCM91250A-SWARM"
586 select HAVE_PATA_PLATFORM
587 select NR_CPUS_DEFAULT_2
590 select SYS_HAS_CPU_SB1
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_HIGHMEM
593 select SYS_SUPPORTS_LITTLE_ENDIAN
594 select ZONE_DMA32 if 64BIT
596 config SIBYTE_LITTLESUR
597 bool "Sibyte BCM91250C2-LittleSur"
598 depends on EXPERIMENTAL
601 select HAVE_PATA_PLATFORM
602 select NR_CPUS_DEFAULT_2
605 select SYS_HAS_CPU_SB1
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select SYS_SUPPORTS_HIGHMEM
608 select SYS_SUPPORTS_LITTLE_ENDIAN
610 config SIBYTE_SENTOSA
611 bool "Sibyte BCM91250E-Sentosa"
612 depends on EXPERIMENTAL
615 select NR_CPUS_DEFAULT_2
618 select SYS_HAS_CPU_SB1
619 select SYS_SUPPORTS_BIG_ENDIAN
620 select SYS_SUPPORTS_LITTLE_ENDIAN
623 bool "Sibyte BCM91480B-BigSur"
626 select NR_CPUS_DEFAULT_4
627 select SIBYTE_BCM1x80
629 select SYS_HAS_CPU_SB1
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select SYS_SUPPORTS_HIGHMEM
632 select SYS_SUPPORTS_LITTLE_ENDIAN
633 select ZONE_DMA32 if 64BIT
636 bool "SNI RM200/300/400"
637 select ARC if CPU_LITTLE_ENDIAN
638 select ARC32 if CPU_LITTLE_ENDIAN
639 select SNIPROM if CPU_BIG_ENDIAN
640 select ARCH_MAY_HAVE_PC_FDC
644 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
645 select DMA_NONCOHERENT
646 select GENERIC_ISA_DMA
647 select HAVE_PCSPKR_PLATFORM
654 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
655 select SYS_HAS_CPU_R4X00
656 select SYS_HAS_CPU_R5000
657 select SYS_HAS_CPU_R10000
658 select R5000_CPU_SCACHE
659 select SYS_HAS_EARLY_PRINTK
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select SYS_SUPPORTS_HIGHMEM
664 select SYS_SUPPORTS_LITTLE_ENDIAN
666 The SNI RM200/300/400 are MIPS-based machines manufactured by
667 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
668 Technology and now in turn merged with Fujitsu. Say Y here to
669 support this machine type.
672 bool "Toshiba TX39 series based machines"
675 bool "Toshiba TX49 series based machines"
677 config MIKROTIK_RB532
678 bool "Mikrotik RB532 boards"
681 select DMA_NONCOHERENT
684 select SYS_HAS_CPU_MIPS32_R1
685 select SYS_SUPPORTS_32BIT_KERNEL
686 select SYS_SUPPORTS_LITTLE_ENDIAN
689 select ARCH_REQUIRE_GPIOLIB
691 Support the Mikrotik(tm) RouterBoard 532 series,
692 based on the IDT RC32434 SoC.
695 bool "Wind River PPMC board"
700 select DMA_NONCOHERENT
702 select PCI_GT64XXX_PCI0
704 select SYS_HAS_CPU_MIPS32_R1
705 select SYS_HAS_CPU_MIPS32_R2
706 select SYS_HAS_CPU_MIPS64_R1
707 select SYS_HAS_CPU_NEVADA
708 select SYS_HAS_CPU_RM7000
709 select SYS_SUPPORTS_32BIT_KERNEL
710 select SYS_SUPPORTS_64BIT_KERNEL
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select SYS_SUPPORTS_LITTLE_ENDIAN
714 This enables support for the Wind River MIPS32 4KC PPMC evaluation
715 board, which is based on GT64120 bridge chip.
717 config CAVIUM_OCTEON_SIMULATOR
718 bool "Cavium Networks Octeon Simulator"
720 select 64BIT_PHYS_ADDR
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_HOTPLUG_CPU
725 select SYS_HAS_CPU_CAVIUM_OCTEON
728 The Octeon simulator is software performance model of the Cavium
729 Octeon Processor. It supports simulating Octeon processors on x86
732 config CAVIUM_OCTEON_REFERENCE_BOARD
733 bool "Cavium Networks Octeon reference board"
735 select 64BIT_PHYS_ADDR
737 select SYS_SUPPORTS_64BIT_KERNEL
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_HOTPLUG_CPU
740 select SYS_HAS_EARLY_PRINTK
741 select SYS_HAS_CPU_CAVIUM_OCTEON
744 select ARCH_SUPPORTS_MSI
746 select USB_ARCH_HAS_OHCI
747 select USB_ARCH_HAS_EHCI
750 This option supports all of the Octeon reference boards from Cavium
751 Networks. It builds a kernel that dynamically determines the Octeon
752 CPU type and supports all known board reference implementations.
753 Some of the supported boards are:
760 Say Y here for most Octeon reference boards.
763 bool "Netlogic XLR/XLS based systems"
764 depends on EXPERIMENTAL
767 select SYS_HAS_CPU_XLR
768 select SYS_SUPPORTS_SMP
771 select SYS_SUPPORTS_32BIT_KERNEL
772 select SYS_SUPPORTS_64BIT_KERNEL
773 select 64BIT_PHYS_ADDR
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
777 select NR_CPUS_DEFAULT_32
781 select ARCH_SUPPORTS_MSI
782 select ZONE_DMA if 64BIT
784 select SYS_HAS_EARLY_PRINTK
786 Support for systems based on Netlogic XLR and XLS processors.
787 Say Y here if you have a XLR or XLS based board.
790 bool "Netlogic XLP based systems"
791 depends on EXPERIMENTAL
794 select SYS_HAS_CPU_XLP
795 select SYS_SUPPORTS_SMP
798 select SYS_SUPPORTS_32BIT_KERNEL
799 select SYS_SUPPORTS_64BIT_KERNEL
800 select 64BIT_PHYS_ADDR
801 select SYS_SUPPORTS_BIG_ENDIAN
802 select SYS_SUPPORTS_LITTLE_ENDIAN
803 select SYS_SUPPORTS_HIGHMEM
805 select NR_CPUS_DEFAULT_32
809 select ZONE_DMA if 64BIT
811 select SYS_HAS_EARLY_PRINTK
813 This board is based on Netlogic XLP Processor.
814 Say Y here if you have a XLP based board.
818 source "arch/mips/alchemy/Kconfig"
819 source "arch/mips/ath79/Kconfig"
820 source "arch/mips/bcm47xx/Kconfig"
821 source "arch/mips/bcm63xx/Kconfig"
822 source "arch/mips/jazz/Kconfig"
823 source "arch/mips/jz4740/Kconfig"
824 source "arch/mips/lantiq/Kconfig"
825 source "arch/mips/lasat/Kconfig"
826 source "arch/mips/pmc-sierra/Kconfig"
827 source "arch/mips/powertv/Kconfig"
828 source "arch/mips/sgi-ip27/Kconfig"
829 source "arch/mips/sibyte/Kconfig"
830 source "arch/mips/txx9/Kconfig"
831 source "arch/mips/vr41xx/Kconfig"
832 source "arch/mips/cavium-octeon/Kconfig"
833 source "arch/mips/loongson/Kconfig"
834 source "arch/mips/netlogic/Kconfig"
838 config RWSEM_GENERIC_SPINLOCK
842 config RWSEM_XCHGADD_ALGORITHM
845 config ARCH_HAS_ILOG2_U32
849 config ARCH_HAS_ILOG2_U64
853 config GENERIC_HWEIGHT
857 config GENERIC_CALIBRATE_DELAY
861 config SCHED_OMIT_FRAME_POINTER
866 # Select some configuration options automatically based on user selections.
871 config ARCH_MAY_HAVE_PC_FDC
920 select ARCH_REQUIRE_GPIOLIB
926 config ARCH_DMA_ADDR_T_64BIT
927 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
932 config DMA_NONCOHERENT
934 select NEED_DMA_MAP_STATE
936 config NEED_DMA_MAP_STATE
939 config SYS_HAS_EARLY_PRINTK
943 bool "Support for hot-pluggable CPUs"
944 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
946 Say Y here to allow turning CPUs off and on. CPUs can be
947 controlled through /sys/devices/system/cpu.
948 (Note: power management support will enable this option
949 automatically on SMP systems. )
950 Say N if you want to disable CPU hotplug.
952 config SYS_SUPPORTS_HOTPLUG_CPU
967 config MIPS_DISABLE_OBSOLETE_IDE
979 config GENERIC_ISA_DMA
981 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
984 config GENERIC_ISA_DMA_SUPPORT_BROKEN
986 select GENERIC_ISA_DMA
998 # Endianess selection. Sufficiently obscure so many users don't know what to
999 # answer,so we try hard to limit the available choices. Also the use of a
1000 # choice statement should be more obvious to the user.
1003 prompt "Endianess selection"
1005 Some MIPS machines can be configured for either little or big endian
1006 byte order. These modes require different kernels and a different
1007 Linux distribution. In general there is one preferred byteorder for a
1008 particular system but some systems are just as commonly used in the
1009 one or the other endianness.
1011 config CPU_BIG_ENDIAN
1013 depends on SYS_SUPPORTS_BIG_ENDIAN
1015 config CPU_LITTLE_ENDIAN
1016 bool "Little endian"
1017 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1025 config SYS_SUPPORTS_APM_EMULATION
1028 config SYS_SUPPORTS_BIG_ENDIAN
1031 config SYS_SUPPORTS_LITTLE_ENDIAN
1034 config SYS_SUPPORTS_HUGETLBFS
1036 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1063 config MIPS_BOARDS_GEN
1066 config PCI_GT64XXX_PCI0
1069 config NO_EXCEPT_FILL
1074 select SERIAL_RM9000
1080 select DMA_NONCOHERENT
1082 select SWAP_IO_SPACE
1083 select SYS_HAS_CPU_R5500
1084 select SYS_SUPPORTS_32BIT_KERNEL
1085 select SYS_SUPPORTS_64BIT_KERNEL
1086 select SYS_SUPPORTS_BIG_ENDIAN
1093 select DMA_NONCOHERENT
1094 select SYS_HAS_CPU_MIPS32_R2
1095 select SYS_SUPPORTS_32BIT_KERNEL
1096 select SYS_SUPPORTS_LITTLE_ENDIAN
1097 select SYS_SUPPORTS_BIG_ENDIAN
1099 select CPU_MIPSR2_IRQ_VI
1111 select DMA_NONCOHERENT
1113 select SYS_HAS_CPU_MIPS32_R1
1114 select SYS_HAS_EARLY_PRINTK
1115 select SYS_SUPPORTS_32BIT_KERNEL
1118 config SWAP_IO_SPACE
1121 config SERIAL_RM9000
1124 config SGI_HAS_INDYDOG
1136 config SGI_HAS_ZILOG
1139 config SGI_HAS_I8042
1142 config DEFAULT_SGI_PARTITION
1154 config MIPS_L1_CACHE_SHIFT
1156 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1157 default "6" if MIPS_CPU_SCACHE
1158 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1161 config HAVE_STD_PC_SERIAL_PORT
1165 bool "ARC console support"
1166 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1170 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1175 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1184 menu "CPU selection"
1190 config CPU_LOONGSON2E
1192 depends on SYS_HAS_CPU_LOONGSON2E
1193 select CPU_LOONGSON2
1195 The Loongson 2E processor implements the MIPS III instruction set
1196 with many extensions.
1198 It has an internal FPGA northbridge, which is compatible to
1201 config CPU_LOONGSON2F
1203 depends on SYS_HAS_CPU_LOONGSON2F
1204 select CPU_LOONGSON2
1206 select ARCH_REQUIRE_GPIOLIB
1208 The Loongson 2F processor implements the MIPS III instruction set
1209 with many extensions.
1211 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1212 have a similar programming interface with FPGA northbridge used in
1215 config CPU_MIPS32_R1
1216 bool "MIPS32 Release 1"
1217 depends on SYS_HAS_CPU_MIPS32_R1
1218 select CPU_HAS_PREFETCH
1219 select CPU_SUPPORTS_32BIT_KERNEL
1220 select CPU_SUPPORTS_HIGHMEM
1222 Choose this option to build a kernel for release 1 or later of the
1223 MIPS32 architecture. Most modern embedded systems with a 32-bit
1224 MIPS processor are based on a MIPS32 processor. If you know the
1225 specific type of processor in your system, choose those that one
1226 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1227 Release 2 of the MIPS32 architecture is available since several
1228 years so chances are you even have a MIPS32 Release 2 processor
1229 in which case you should choose CPU_MIPS32_R2 instead for better
1232 config CPU_MIPS32_R2
1233 bool "MIPS32 Release 2"
1234 depends on SYS_HAS_CPU_MIPS32_R2
1235 select CPU_HAS_PREFETCH
1236 select CPU_SUPPORTS_32BIT_KERNEL
1237 select CPU_SUPPORTS_HIGHMEM
1239 Choose this option to build a kernel for release 2 or later of the
1240 MIPS32 architecture. Most modern embedded systems with a 32-bit
1241 MIPS processor are based on a MIPS32 processor. If you know the
1242 specific type of processor in your system, choose those that one
1243 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1245 config CPU_MIPS64_R1
1246 bool "MIPS64 Release 1"
1247 depends on SYS_HAS_CPU_MIPS64_R1
1248 select CPU_HAS_PREFETCH
1249 select CPU_SUPPORTS_32BIT_KERNEL
1250 select CPU_SUPPORTS_64BIT_KERNEL
1251 select CPU_SUPPORTS_HIGHMEM
1252 select CPU_SUPPORTS_HUGEPAGES
1254 Choose this option to build a kernel for release 1 or later of the
1255 MIPS64 architecture. Many modern embedded systems with a 64-bit
1256 MIPS processor are based on a MIPS64 processor. If you know the
1257 specific type of processor in your system, choose those that one
1258 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1259 Release 2 of the MIPS64 architecture is available since several
1260 years so chances are you even have a MIPS64 Release 2 processor
1261 in which case you should choose CPU_MIPS64_R2 instead for better
1264 config CPU_MIPS64_R2
1265 bool "MIPS64 Release 2"
1266 depends on SYS_HAS_CPU_MIPS64_R2
1267 select CPU_HAS_PREFETCH
1268 select CPU_SUPPORTS_32BIT_KERNEL
1269 select CPU_SUPPORTS_64BIT_KERNEL
1270 select CPU_SUPPORTS_HIGHMEM
1271 select CPU_SUPPORTS_HUGEPAGES
1273 Choose this option to build a kernel for release 2 or later of the
1274 MIPS64 architecture. Many modern embedded systems with a 64-bit
1275 MIPS processor are based on a MIPS64 processor. If you know the
1276 specific type of processor in your system, choose those that one
1277 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1281 depends on SYS_HAS_CPU_R3000
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_HIGHMEM
1286 Please make sure to pick the right CPU type. Linux/MIPS is not
1287 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1288 *not* work on R4000 machines and vice versa. However, since most
1289 of the supported machines have an R4000 (or similar) CPU, R4x00
1290 might be a safe bet. If the resulting kernel does not work,
1291 try to recompile with R3000.
1295 depends on SYS_HAS_CPU_TX39XX
1296 select CPU_SUPPORTS_32BIT_KERNEL
1300 depends on SYS_HAS_CPU_VR41XX
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1304 The options selects support for the NEC VR4100 series of processors.
1305 Only choose this option if you have one of these processors as a
1306 kernel built with this option will not run on any other type of
1307 processor or vice versa.
1311 depends on SYS_HAS_CPU_R4300
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_64BIT_KERNEL
1315 MIPS Technologies R4300-series processors.
1319 depends on SYS_HAS_CPU_R4X00
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_64BIT_KERNEL
1323 MIPS Technologies R4000-series processors other than 4300, including
1324 the R4000, R4400, R4600, and 4700.
1328 depends on SYS_HAS_CPU_TX49XX
1329 select CPU_HAS_PREFETCH
1330 select CPU_SUPPORTS_32BIT_KERNEL
1331 select CPU_SUPPORTS_64BIT_KERNEL
1335 depends on SYS_HAS_CPU_R5000
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1339 MIPS Technologies R5000-series processors other than the Nevada.
1343 depends on SYS_HAS_CPU_R5432
1344 select CPU_SUPPORTS_32BIT_KERNEL
1345 select CPU_SUPPORTS_64BIT_KERNEL
1349 depends on SYS_HAS_CPU_R5500
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_64BIT_KERNEL
1352 select CPU_SUPPORTS_HUGEPAGES
1354 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1359 depends on EXPERIMENTAL
1360 depends on SYS_HAS_CPU_R6000
1361 select CPU_SUPPORTS_32BIT_KERNEL
1363 MIPS Technologies R6000 and R6000A series processors. Note these
1364 processors are extremely rare and the support for them is incomplete.
1368 depends on SYS_HAS_CPU_NEVADA
1369 select CPU_SUPPORTS_32BIT_KERNEL
1370 select CPU_SUPPORTS_64BIT_KERNEL
1372 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1376 depends on EXPERIMENTAL
1377 depends on SYS_HAS_CPU_R8000
1378 select CPU_HAS_PREFETCH
1379 select CPU_SUPPORTS_64BIT_KERNEL
1381 MIPS Technologies R8000 processors. Note these processors are
1382 uncommon and the support for them is incomplete.
1386 depends on SYS_HAS_CPU_R10000
1387 select CPU_HAS_PREFETCH
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select CPU_SUPPORTS_64BIT_KERNEL
1390 select CPU_SUPPORTS_HIGHMEM
1392 MIPS Technologies R10000-series processors.
1396 depends on SYS_HAS_CPU_RM7000
1397 select CPU_HAS_PREFETCH
1398 select CPU_SUPPORTS_32BIT_KERNEL
1399 select CPU_SUPPORTS_64BIT_KERNEL
1400 select CPU_SUPPORTS_HIGHMEM
1404 depends on SYS_HAS_CPU_RM9000
1405 select CPU_HAS_PREFETCH
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_64BIT_KERNEL
1408 select CPU_SUPPORTS_HIGHMEM
1409 select WEAK_ORDERING
1413 depends on SYS_HAS_CPU_SB1
1414 select CPU_SUPPORTS_32BIT_KERNEL
1415 select CPU_SUPPORTS_64BIT_KERNEL
1416 select CPU_SUPPORTS_HIGHMEM
1417 select WEAK_ORDERING
1419 config CPU_CAVIUM_OCTEON
1420 bool "Cavium Octeon processor"
1421 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1422 select CPU_HAS_PREFETCH
1423 select CPU_SUPPORTS_64BIT_KERNEL
1424 select SYS_SUPPORTS_SMP
1425 select NR_CPUS_DEFAULT_16
1426 select WEAK_ORDERING
1427 select CPU_SUPPORTS_HIGHMEM
1428 select CPU_SUPPORTS_HUGEPAGES
1430 The Cavium Octeon processor is a highly integrated chip containing
1431 many ethernet hardware widgets for networking tasks. The processor
1432 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1433 Full details can be found at http://www.caviumnetworks.com.
1435 config CPU_BMIPS3300
1437 depends on SYS_HAS_CPU_BMIPS3300
1440 Broadcom BMIPS3300 processors.
1442 config CPU_BMIPS4350
1444 depends on SYS_HAS_CPU_BMIPS4350
1446 select SYS_SUPPORTS_SMP
1447 select SYS_SUPPORTS_HOTPLUG_CPU
1449 Broadcom BMIPS4350 ("VIPER") processors.
1451 config CPU_BMIPS4380
1453 depends on SYS_HAS_CPU_BMIPS4380
1455 select SYS_SUPPORTS_SMP
1456 select SYS_SUPPORTS_HOTPLUG_CPU
1458 Broadcom BMIPS4380 processors.
1460 config CPU_BMIPS5000
1462 depends on SYS_HAS_CPU_BMIPS5000
1464 select CPU_SUPPORTS_HIGHMEM
1465 select MIPS_CPU_SCACHE
1466 select SYS_SUPPORTS_SMP
1467 select SYS_SUPPORTS_HOTPLUG_CPU
1469 Broadcom BMIPS5000 processors.
1472 bool "Netlogic XLR SoC"
1473 depends on SYS_HAS_CPU_XLR
1474 select CPU_SUPPORTS_32BIT_KERNEL
1475 select CPU_SUPPORTS_64BIT_KERNEL
1476 select CPU_SUPPORTS_HIGHMEM
1477 select WEAK_ORDERING
1478 select WEAK_REORDERING_BEYOND_LLSC
1479 select CPU_SUPPORTS_HUGEPAGES
1481 Netlogic Microsystems XLR/XLS processors.
1484 bool "Netlogic XLP SoC"
1485 depends on SYS_HAS_CPU_XLP
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1490 select WEAK_ORDERING
1491 select WEAK_REORDERING_BEYOND_LLSC
1492 select CPU_HAS_PREFETCH
1494 Netlogic Microsystems XLP processors.
1498 config CPU_NOP_WORKAROUNDS
1501 config CPU_JUMP_WORKAROUNDS
1504 config CPU_LOONGSON2F_WORKAROUNDS
1505 bool "Loongson 2F Workarounds"
1507 select CPU_NOP_WORKAROUNDS
1508 select CPU_JUMP_WORKAROUNDS
1510 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1511 require workarounds. Without workarounds the system may hang
1512 unexpectedly. For more information please refer to the gas
1513 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1515 Loongson 2F03 and later have fixed these issues and no workarounds
1516 are needed. The workarounds have no significant side effect on them
1517 but may decrease the performance of the system so this option should
1518 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1521 If unsure, please say Y.
1522 endif # CPU_LOONGSON2F
1524 config SYS_SUPPORTS_ZBOOT
1526 select HAVE_KERNEL_GZIP
1527 select HAVE_KERNEL_BZIP2
1528 select HAVE_KERNEL_LZMA
1529 select HAVE_KERNEL_LZO
1531 config SYS_SUPPORTS_ZBOOT_UART16550
1533 select SYS_SUPPORTS_ZBOOT
1535 config CPU_LOONGSON2
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1544 select CPU_SUPPORTS_32BIT_KERNEL
1545 select DMA_NONCOHERENT
1547 select SWAP_IO_SPACE
1548 select WEAK_ORDERING
1550 config SYS_HAS_CPU_LOONGSON2E
1553 config SYS_HAS_CPU_LOONGSON2F
1555 select CPU_SUPPORTS_CPUFREQ
1556 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1557 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1559 config SYS_HAS_CPU_MIPS32_R1
1562 config SYS_HAS_CPU_MIPS32_R2
1565 config SYS_HAS_CPU_MIPS64_R1
1568 config SYS_HAS_CPU_MIPS64_R2
1571 config SYS_HAS_CPU_R3000
1574 config SYS_HAS_CPU_TX39XX
1577 config SYS_HAS_CPU_VR41XX
1580 config SYS_HAS_CPU_R4300
1583 config SYS_HAS_CPU_R4X00
1586 config SYS_HAS_CPU_TX49XX
1589 config SYS_HAS_CPU_R5000
1592 config SYS_HAS_CPU_R5432
1595 config SYS_HAS_CPU_R5500
1598 config SYS_HAS_CPU_R6000
1601 config SYS_HAS_CPU_NEVADA
1604 config SYS_HAS_CPU_R8000
1607 config SYS_HAS_CPU_R10000
1610 config SYS_HAS_CPU_RM7000
1613 config SYS_HAS_CPU_RM9000
1616 config SYS_HAS_CPU_SB1
1619 config SYS_HAS_CPU_CAVIUM_OCTEON
1622 config SYS_HAS_CPU_BMIPS3300
1625 config SYS_HAS_CPU_BMIPS4350
1628 config SYS_HAS_CPU_BMIPS4380
1631 config SYS_HAS_CPU_BMIPS5000
1634 config SYS_HAS_CPU_XLR
1637 config SYS_HAS_CPU_XLP
1641 # CPU may reorder R->R, R->W, W->R, W->W
1642 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1644 config WEAK_ORDERING
1648 # CPU may reorder reads and writes beyond LL/SC
1649 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1651 config WEAK_REORDERING_BEYOND_LLSC
1656 # These two indicate any level of the MIPS32 and MIPS64 architecture
1660 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1664 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1667 # These two indicate the revision of the architecture, either Release 1 or Release 2
1671 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1675 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1677 config SYS_SUPPORTS_32BIT_KERNEL
1679 config SYS_SUPPORTS_64BIT_KERNEL
1681 config CPU_SUPPORTS_32BIT_KERNEL
1683 config CPU_SUPPORTS_64BIT_KERNEL
1685 config CPU_SUPPORTS_CPUFREQ
1687 config CPU_SUPPORTS_ADDRWINCFG
1689 config CPU_SUPPORTS_HUGEPAGES
1691 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1693 config MIPS_PGD_C0_CONTEXT
1695 default y if 64BIT && CPU_MIPSR2
1698 # Set to y for ptrace access to watch registers.
1700 config HARDWARE_WATCHPOINTS
1702 default y if CPU_MIPSR1 || CPU_MIPSR2
1708 prompt "Kernel code model"
1710 You should only select this option if you have a workload that
1711 actually benefits from 64-bit processing or if your machine has
1712 large memory. You will only be presented a single option in this
1713 menu if your system does not support both 32-bit and 64-bit kernels.
1716 bool "32-bit kernel"
1717 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1720 Select this option if you want to build a 32-bit kernel.
1722 bool "64-bit kernel"
1723 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1724 select HAVE_SYSCALL_WRAPPERS
1726 Select this option if you want to build a 64-bit kernel.
1731 prompt "Kernel page size"
1732 default PAGE_SIZE_4KB
1734 config PAGE_SIZE_4KB
1736 depends on !CPU_LOONGSON2
1738 This option select the standard 4kB Linux page size. On some
1739 R3000-family processors this is the only available page size. Using
1740 4kB page size will minimize memory consumption and is therefore
1741 recommended for low memory systems.
1743 config PAGE_SIZE_8KB
1745 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1747 Using 8kB page size will result in higher performance kernel at
1748 the price of higher memory consumption. This option is available
1749 only on R8000 and cnMIPS processors. Note that you will need a
1750 suitable Linux distribution to support this.
1752 config PAGE_SIZE_16KB
1754 depends on !CPU_R3000 && !CPU_TX39XX
1756 Using 16kB page size will result in higher performance kernel at
1757 the price of higher memory consumption. This option is available on
1758 all non-R3000 family processors. Note that you will need a suitable
1759 Linux distribution to support this.
1761 config PAGE_SIZE_32KB
1763 depends on CPU_CAVIUM_OCTEON
1765 Using 32kB page size will result in higher performance kernel at
1766 the price of higher memory consumption. This option is available
1767 only on cnMIPS cores. Note that you will need a suitable Linux
1768 distribution to support this.
1770 config PAGE_SIZE_64KB
1772 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1774 Using 64kB page size will result in higher performance kernel at
1775 the price of higher memory consumption. This option is available on
1776 all non-R3000 family processor. Not that at the time of this
1777 writing this option is still high experimental.
1781 config FORCE_MAX_ZONEORDER
1782 int "Maximum zone order"
1783 range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1784 default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1785 range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1786 default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1790 The kernel memory allocator divides physically contiguous memory
1791 blocks into "zones", where each zone is a power of two number of
1792 pages. This option selects the largest power of two that the kernel
1793 keeps in the memory allocator. If you need to allocate very large
1794 blocks of physically contiguous memory, then you may need to
1795 increase this value.
1797 This config option is actually maximum order plus one. For example,
1798 a value of 11 means that the largest free memory block is 2^10 pages.
1800 The page size is not necessarily 4KB. Keep this in mind
1801 when choosing a value for this option.
1806 config IP22_CPU_SCACHE
1811 # Support for a MIPS32 / MIPS64 style S-caches
1813 config MIPS_CPU_SCACHE
1817 config R5000_CPU_SCACHE
1821 config RM7000_CPU_SCACHE
1825 config SIBYTE_DMA_PAGEOPS
1826 bool "Use DMA to clear/copy pages"
1829 Instead of using the CPU to zero and copy pages, use a Data Mover
1830 channel. These DMA channels are otherwise unused by the standard
1831 SiByte Linux port. Seems to give a small performance benefit.
1833 config CPU_HAS_PREFETCH
1837 prompt "MIPS MT options"
1839 config MIPS_MT_DISABLED
1840 bool "Disable multithreading support."
1842 Use this option if your workload can't take advantage of
1843 MIPS hardware multithreading support. On systems that don't have
1844 the option of an MT-enabled processor this option will be the only
1845 option in this menu.
1848 bool "Use 1 TC on each available VPE for SMP"
1849 depends on SYS_SUPPORTS_MULTITHREADING
1850 select CPU_MIPSR2_IRQ_VI
1851 select CPU_MIPSR2_IRQ_EI
1853 select NR_CPUS_DEFAULT_2
1855 select SYS_SUPPORTS_SCHED_SMT if SMP
1856 select SYS_SUPPORTS_SMP
1859 This is a kernel model which is known a VSMP but lately has been
1860 marketesed into SMVP.
1861 Virtual SMP uses the processor's VPEs to implement virtual
1862 processors. In currently available configuration of the 34K processor
1863 this allows for a dual processor. Both processors will share the same
1864 primary caches; each will obtain the half of the TLB for it's own
1865 exclusive use. For a layman this model can be described as similar to
1866 what Intel calls Hyperthreading.
1868 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1871 bool "SMTC: Use all TCs on all VPEs for SMP"
1872 depends on CPU_MIPS32_R2
1873 #depends on CPU_MIPS64_R2 # once there is hardware ...
1874 depends on SYS_SUPPORTS_MULTITHREADING
1875 select CPU_MIPSR2_IRQ_VI
1876 select CPU_MIPSR2_IRQ_EI
1878 select NR_CPUS_DEFAULT_8
1880 select SYS_SUPPORTS_SMP
1883 This is a kernel model which is known a SMTC or lately has been
1884 marketesed into SMVP.
1885 is presenting the available TC's of the core as processors to Linux.
1886 On currently available 34K processors this means a Linux system will
1887 see up to 5 processors. The implementation of the SMTC kernel differs
1888 significantly from VSMP and cannot efficiently coexist in the same
1889 kernel binary so the choice between VSMP and SMTC is a compile time
1892 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1900 bool "SMT (multithreading) scheduler support"
1901 depends on SYS_SUPPORTS_SCHED_SMT
1904 SMT scheduler support improves the CPU scheduler's decision making
1905 when dealing with MIPS MT enabled cores at a cost of slightly
1906 increased overhead in some places. If unsure say N here.
1908 config SYS_SUPPORTS_SCHED_SMT
1912 config SYS_SUPPORTS_MULTITHREADING
1915 config MIPS_MT_FPAFF
1916 bool "Dynamic FPU affinity for FP-intensive threads"
1918 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1920 config MIPS_VPE_LOADER
1921 bool "VPE loader support."
1922 depends on SYS_SUPPORTS_MULTITHREADING
1923 select CPU_MIPSR2_IRQ_VI
1924 select CPU_MIPSR2_IRQ_EI
1927 Includes a loader for loading an elf relocatable object
1928 onto another VPE and running it.
1930 config MIPS_MT_SMTC_IM_BACKSTOP
1931 bool "Use per-TC register bits as backstop for inhibited IM bits"
1932 depends on MIPS_MT_SMTC
1935 To support multiple TC microthreads acting as "CPUs" within
1936 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1937 during interrupt handling. To support legacy drivers and interrupt
1938 controller management code, SMTC has a "backstop" to track and
1939 if necessary restore the interrupt mask. This has some performance
1940 impact on interrupt service overhead.
1942 config MIPS_MT_SMTC_IRQAFF
1943 bool "Support IRQ affinity API"
1944 depends on MIPS_MT_SMTC
1947 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1948 for SMTC Linux kernel. Requires platform support, of which
1949 an example can be found in the MIPS kernel i8259 and Malta
1950 platform code. Adds some overhead to interrupt dispatch, and
1951 should be used only if you know what you are doing.
1953 config MIPS_VPE_LOADER_TOM
1954 bool "Load VPE program into memory hidden from linux"
1955 depends on MIPS_VPE_LOADER
1958 The loader can use memory that is present but has been hidden from
1959 Linux using the kernel command line option "mem=xxMB". It's up to
1960 you to ensure the amount you put in the option and the space your
1961 program requires is less or equal to the amount physically present.
1963 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1964 config MIPS_VPE_APSP_API
1965 bool "Enable support for AP/SP API (RTLX)"
1966 depends on MIPS_VPE_LOADER
1969 config MIPS_APSP_KSPD
1971 depends on MIPS_VPE_APSP_API
1974 KSPD is a kernel daemon that accepts syscall requests from the SP
1975 side, actions them and returns the results. It also handles the
1976 "exit" syscall notifying other kernel modules the SP program is
1977 exiting. You probably want to say yes here.
1980 bool "MIPS CMP framework support"
1981 depends on SYS_SUPPORTS_MIPS_CMP
1983 select SYS_SUPPORTS_SMP
1984 select SYS_SUPPORTS_SCHED_SMT if SMP
1985 select WEAK_ORDERING
1988 This is a placeholder option for the GCMP work. It will need to
1989 be handled differently...
1991 config SB1_PASS_1_WORKAROUNDS
1993 depends on CPU_SB1_PASS_1
1996 config SB1_PASS_2_WORKAROUNDS
1998 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2001 config SB1_PASS_2_1_WORKAROUNDS
2003 depends on CPU_SB1 && CPU_SB1_PASS_2
2006 config 64BIT_PHYS_ADDR
2009 config ARCH_PHYS_ADDR_T_64BIT
2010 def_bool 64BIT_PHYS_ADDR
2012 config CPU_HAS_SMARTMIPS
2013 depends on SYS_SUPPORTS_SMARTMIPS
2014 bool "Support for the SmartMIPS ASE"
2016 SmartMIPS is a extension of the MIPS32 architecture aimed at
2017 increased security at both hardware and software level for
2018 smartcards. Enabling this option will allow proper use of the
2019 SmartMIPS instructions by Linux applications. However a kernel with
2020 this option will not work on a MIPS core without SmartMIPS core. If
2021 you don't know you probably don't have SmartMIPS and should say N
2031 # Vectored interrupt mode is an R2 feature
2033 config CPU_MIPSR2_IRQ_VI
2037 # Extended interrupt mode is an R2 feature
2039 config CPU_MIPSR2_IRQ_EI
2044 depends on !CPU_R3000
2050 config CPU_DADDI_WORKAROUNDS
2053 config CPU_R4000_WORKAROUNDS
2055 select CPU_R4400_WORKAROUNDS
2057 config CPU_R4400_WORKAROUNDS
2061 # - Highmem only makes sense for the 32-bit kernel.
2062 # - The current highmem code will only work properly on physically indexed
2063 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2064 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2065 # moment we protect the user and offer the highmem option only on machines
2066 # where it's known to be safe. This will not offer highmem on a few systems
2067 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2068 # indexed CPUs but we're playing safe.
2069 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2070 # know they might have memory configurations that could make use of highmem
2074 bool "High Memory Support"
2075 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2077 config CPU_SUPPORTS_HIGHMEM
2080 config SYS_SUPPORTS_HIGHMEM
2083 config SYS_SUPPORTS_SMARTMIPS
2086 config ARCH_FLATMEM_ENABLE
2088 depends on !NUMA && !CPU_LOONGSON2
2090 config ARCH_DISCONTIGMEM_ENABLE
2092 default y if SGI_IP27
2094 Say Y to support efficient handling of discontiguous physical memory,
2095 for architectures which are either NUMA (Non-Uniform Memory Access)
2096 or have huge holes in the physical address space for other reasons.
2097 See <file:Documentation/vm/numa> for more.
2099 config ARCH_SPARSEMEM_ENABLE
2101 select SPARSEMEM_STATIC
2105 depends on SYS_SUPPORTS_NUMA
2107 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2108 Access). This option improves performance on systems with more
2109 than two nodes; on two node systems it is generally better to
2110 leave it disabled; on single node systems disable this option
2113 config SYS_SUPPORTS_NUMA
2119 depends on NEED_MULTIPLE_NODES
2121 config HW_PERF_EVENTS
2122 bool "Enable hardware performance counter support for perf events"
2123 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON)
2126 Enable hardware performance counter support for perf events. If
2127 disabled, perf events will use software events only.
2132 bool "Multi-Processing support"
2133 depends on SYS_SUPPORTS_SMP
2135 select USE_GENERIC_SMP_HELPERS
2137 This enables support for systems with more than one CPU. If you have
2138 a system with only one CPU, like most personal computers, say N. If
2139 you have a system with more than one CPU, say Y.
2141 If you say N here, the kernel will run on single and multiprocessor
2142 machines, but will use only one CPU of a multiprocessor machine. If
2143 you say Y here, the kernel will run on many, but not all,
2144 singleprocessor machines. On a singleprocessor machine, the kernel
2145 will run faster if you say N here.
2147 People using multiprocessor machines who say Y here should also say
2148 Y to "Enhanced Real Time Clock Support", below.
2150 See also the SMP-HOWTO available at
2151 <http://www.tldp.org/docs.html#howto>.
2153 If you don't know what to do here, say N.
2158 config SYS_SUPPORTS_MIPS_CMP
2161 config SYS_SUPPORTS_SMP
2164 config NR_CPUS_DEFAULT_1
2167 config NR_CPUS_DEFAULT_2
2170 config NR_CPUS_DEFAULT_4
2173 config NR_CPUS_DEFAULT_8
2176 config NR_CPUS_DEFAULT_16
2179 config NR_CPUS_DEFAULT_32
2182 config NR_CPUS_DEFAULT_64
2186 int "Maximum number of CPUs (2-64)"
2187 range 1 64 if NR_CPUS_DEFAULT_1
2189 default "1" if NR_CPUS_DEFAULT_1
2190 default "2" if NR_CPUS_DEFAULT_2
2191 default "4" if NR_CPUS_DEFAULT_4
2192 default "8" if NR_CPUS_DEFAULT_8
2193 default "16" if NR_CPUS_DEFAULT_16
2194 default "32" if NR_CPUS_DEFAULT_32
2195 default "64" if NR_CPUS_DEFAULT_64
2197 This allows you to specify the maximum number of CPUs which this
2198 kernel will support. The maximum supported value is 32 for 32-bit
2199 kernel and 64 for 64-bit kernels; the minimum value which makes
2200 sense is 1 for Qemu (useful only for kernel debugging purposes)
2201 and 2 for all others.
2203 This is purely to save memory - each supported CPU adds
2204 approximately eight kilobytes to the kernel image. For best
2205 performance should round up your number of processors to the next
2209 # Timer Interrupt Frequency Configuration
2213 prompt "Timer frequency"
2216 Allows the configuration of the timer frequency.
2219 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2222 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2225 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2228 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2231 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2234 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2237 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2241 config SYS_SUPPORTS_48HZ
2244 config SYS_SUPPORTS_100HZ
2247 config SYS_SUPPORTS_128HZ
2250 config SYS_SUPPORTS_250HZ
2253 config SYS_SUPPORTS_256HZ
2256 config SYS_SUPPORTS_1000HZ
2259 config SYS_SUPPORTS_1024HZ
2262 config SYS_SUPPORTS_ARBIT_HZ
2264 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2265 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2266 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2267 !SYS_SUPPORTS_1024HZ
2272 default 100 if HZ_100
2273 default 128 if HZ_128
2274 default 250 if HZ_250
2275 default 256 if HZ_256
2276 default 1000 if HZ_1000
2277 default 1024 if HZ_1024
2279 source "kernel/Kconfig.preempt"
2282 bool "Kexec system call (EXPERIMENTAL)"
2283 depends on EXPERIMENTAL
2285 kexec is a system call that implements the ability to shutdown your
2286 current kernel, and to start another kernel. It is like a reboot
2287 but it is independent of the system firmware. And like a reboot
2288 you can start any kernel with it, not just Linux.
2290 The name comes from the similarity to the exec system call.
2292 It is an ongoing process to be certain the hardware in a machine
2293 is properly shutdown, so do not be surprised if this code does not
2294 initially work for you. It may help to enable device hotplugging
2295 support. As of this writing the exact hardware interface is
2296 strongly in flux, so no good recommendation can be made.
2299 bool "Enable seccomp to safely compute untrusted bytecode"
2303 This kernel feature is useful for number crunching applications
2304 that may need to compute untrusted bytecode during their
2305 execution. By using pipes or other transports made available to
2306 the process as file descriptors supporting the read/write
2307 syscalls, it's possible to isolate those applications in
2308 their own address space using seccomp. Once seccomp is
2309 enabled via /proc/<pid>/seccomp, it cannot be disabled
2310 and the task is only allowed to execute a few safe syscalls
2311 defined by each seccomp mode.
2313 If unsure, say Y. Only embedded should say N here.
2316 bool "Flattened Device Tree support"
2318 select OF_EARLY_FLATTREE
2321 Include support for flattened device tree machine descriptions.
2325 config LOCKDEP_SUPPORT
2329 config STACKTRACE_SUPPORT
2333 source "init/Kconfig"
2335 source "kernel/Kconfig.freezer"
2337 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2345 bool "Support for PCI controller"
2346 depends on HW_HAS_PCI
2348 select GENERIC_PCI_IOMAP
2349 select NO_GENERIC_PCI_IOPORT_MAP
2351 Find out whether you have a PCI motherboard. PCI is the name of a
2352 bus system, i.e. the way the CPU talks to the other stuff inside
2353 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2359 source "drivers/pci/Kconfig"
2362 # ISA support is now enabled via select. Too many systems still have the one
2363 # or other ISA chip on the board that users don't know about so don't expect
2364 # users to choose the right thing ...
2371 depends on HW_HAS_EISA
2373 select GENERIC_ISA_DMA
2375 The Extended Industry Standard Architecture (EISA) bus was
2376 developed as an open alternative to the IBM MicroChannel bus.
2378 The EISA bus provided some of the features of the IBM MicroChannel
2379 bus while maintaining backward compatibility with cards made for
2380 the older ISA bus. The EISA bus saw limited use between 1988 and
2381 1995 when it was made obsolete by the PCI bus.
2383 Say Y here if you are building a kernel for an EISA-based machine.
2387 source "drivers/eisa/Kconfig"
2390 bool "TURBOchannel support"
2391 depends on MACH_DECSTATION
2393 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2394 processors. TURBOchannel programming specifications are available
2396 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2398 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2399 Linux driver support status is documented at:
2400 <http://www.linux-mips.org/wiki/DECstation>
2410 select MIPS_EXTERNAL_TIMER
2415 source "drivers/pcmcia/Kconfig"
2417 source "drivers/pci/hotplug/Kconfig"
2420 bool "RapidIO support"
2424 If you say Y here, the kernel will include drivers and
2425 infrastructure code to support RapidIO interconnect devices.
2427 source "drivers/rapidio/Kconfig"
2431 menu "Executable file formats"
2433 source "fs/Kconfig.binfmt"
2438 config MIPS32_COMPAT
2439 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2442 Select this option if you want Linux/MIPS 32-bit binary
2443 compatibility. Since all software available for Linux/MIPS is
2444 currently 32-bit you should say Y here.
2448 depends on MIPS32_COMPAT
2449 select ARCH_WANT_OLD_COMPAT_IPC
2452 config SYSVIPC_COMPAT
2454 depends on COMPAT && SYSVIPC
2458 bool "Kernel support for o32 binaries"
2459 depends on MIPS32_COMPAT
2461 Select this option if you want to run o32 binaries. These are pure
2462 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2463 existing binaries are in this format.
2468 bool "Kernel support for n32 binaries"
2469 depends on MIPS32_COMPAT
2471 Select this option if you want to run n32 binaries. These are
2472 64-bit binaries using 32-bit quantities for addressing and certain
2473 data that would normally be 64-bit. They are used in special
2480 default y if MIPS32_O32 || MIPS32_N32
2484 menu "Power management options"
2486 config ARCH_HIBERNATION_POSSIBLE
2488 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2490 config ARCH_SUSPEND_POSSIBLE
2492 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2494 source "kernel/power/Kconfig"
2498 source "arch/mips/kernel/cpufreq/Kconfig"
2500 source "net/Kconfig"
2502 source "drivers/Kconfig"
2506 source "arch/mips/Kconfig.debug"
2508 source "security/Kconfig"
2510 source "crypto/Kconfig"
2512 source "lib/Kconfig"