4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_BPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_DMA_API_DEBUG
37 select GENERIC_IRQ_PROBE
38 select GENERIC_IRQ_SHOW
39 select GENERIC_PCI_IOMAP
40 select HAVE_ARCH_JUMP_LABEL
41 select ARCH_WANT_IPC_PARSE_VERSION
42 select IRQ_FORCED_THREADING
44 select HAVE_MEMBLOCK_NODE_MAP
45 select ARCH_DISCARD_MEMBLOCK
46 select GENERIC_SMP_IDLE_THREAD
47 select BUILDTIME_EXTABLE_SORT
48 select GENERIC_CLOCKEVENTS
49 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
50 select GENERIC_CMOS_UPDATE
51 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_REL if MODULES
54 select MODULES_USE_ELF_RELA if MODULES && 64BIT
55 select CLONE_BACKWARDS
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_CC_STACKPROTECTOR
58 select CPU_PM if CPU_IDLE
59 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
60 select ARCH_BINFMT_ELF_STATE
61 select SYSCTL_EXCEPTION_TRACE
62 select HAVE_VIRT_CPU_ACCOUNTING_GEN
63 select HAVE_IRQ_TIME_ACCOUNTING
64 select GENERIC_TIME_VSYSCALL
65 select ARCH_CLOCKSOURCE_DATA
67 menu "Machine selection"
74 bool "Alchemy processor based machines"
75 select ARCH_PHYS_ADDR_T_64BIT
79 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_APM_EMULATION
83 select ARCH_REQUIRE_GPIOLIB
84 select SYS_SUPPORTS_ZBOOT
88 bool "Texas Instruments AR7"
90 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R1
97 select SYS_HAS_EARLY_PRINTK
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_SUPPORTS_MIPS16
101 select SYS_SUPPORTS_ZBOOT_UART16550
102 select ARCH_REQUIRE_GPIOLIB
106 Support for the Texas Instruments AR7 System-on-a-Chip
107 family: TNETD7100, 7200 and 7300.
110 bool "Atheros AR231x/AR531x SoC support"
113 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_HAS_EARLY_PRINTK
121 Support for Atheros AR231x and Atheros AR531x based boards
124 bool "Atheros AR71XX/AR724X/AR913X based boards"
125 select ARCH_HAS_RESET_CONTROLLER
126 select ARCH_REQUIRE_GPIOLIB
130 select DMA_NONCOHERENT
136 select SYS_HAS_CPU_MIPS32_R2
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_BIG_ENDIAN
140 select SYS_SUPPORTS_MIPS16
141 select SYS_SUPPORTS_ZBOOT
144 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
147 bool "Broadcom Generic BMIPS kernel"
149 select NO_EXCEPT_FILL
155 select BCM7038_L1_IRQ
156 select BCM7120_L2_IRQ
157 select BRCMSTB_L2_IRQ
159 select DMA_NONCOHERENT
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_BIG_ENDIAN
163 select SYS_SUPPORTS_HIGHMEM
164 select SYS_HAS_CPU_BMIPS32_3300
165 select SYS_HAS_CPU_BMIPS4350
166 select SYS_HAS_CPU_BMIPS4380
167 select SYS_HAS_CPU_BMIPS5000
169 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
170 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
171 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
172 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
174 Build a generic DT-based kernel image that boots on select
175 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
176 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
177 must be set appropriately for your board.
180 bool "Broadcom BCM47XX based boards"
181 select ARCH_WANT_OPTIONAL_GPIOLIB
185 select DMA_NONCOHERENT
188 select SYS_HAS_CPU_MIPS32_R1
189 select NO_EXCEPT_FILL
190 select SYS_SUPPORTS_32BIT_KERNEL
191 select SYS_SUPPORTS_LITTLE_ENDIAN
192 select SYS_SUPPORTS_MIPS16
193 select SYS_HAS_EARLY_PRINTK
194 select USE_GENERIC_EARLY_PRINTK_8250
196 select LEDS_GPIO_REGISTER
199 Support for BCM47XX based boards
202 bool "Broadcom BCM63XX based boards"
207 select DMA_NONCOHERENT
209 select SYS_SUPPORTS_32BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_HAS_EARLY_PRINTK
213 select ARCH_REQUIRE_GPIOLIB
215 select MIPS_L1_CACHE_SHIFT_4
217 Support for BCM63XX based boards
224 select DMA_NONCOHERENT
230 select PCI_GT64XXX_PCI0
232 select SYS_HAS_CPU_NEVADA
233 select SYS_HAS_EARLY_PRINTK
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_64BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select USE_GENERIC_EARLY_PRINTK_8250
239 config MACH_DECSTATION
243 select CEVT_R4K if CPU_R4X00
245 select CSRC_R4K if CPU_R4X00
246 select CPU_DADDI_WORKAROUNDS if 64BIT
247 select CPU_R4000_WORKAROUNDS if 64BIT
248 select CPU_R4400_WORKAROUNDS if 64BIT
249 select DMA_NONCOHERENT
252 select SYS_HAS_CPU_R3000
253 select SYS_HAS_CPU_R4X00
254 select SYS_SUPPORTS_32BIT_KERNEL
255 select SYS_SUPPORTS_64BIT_KERNEL
256 select SYS_SUPPORTS_LITTLE_ENDIAN
257 select SYS_SUPPORTS_128HZ
258 select SYS_SUPPORTS_256HZ
259 select SYS_SUPPORTS_1024HZ
260 select MIPS_L1_CACHE_SHIFT_4
262 This enables support for DEC's MIPS based workstations. For details
263 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
264 DECstation porting pages on <http://decstation.unix-ag.org/>.
266 If you have one of the following DECstation Models you definitely
267 want to choose R4xx0 for the CPU Type:
274 otherwise choose R3000.
277 bool "Jazz family of machines"
280 select ARCH_MAY_HAVE_PC_FDC
283 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
284 select GENERIC_ISA_DMA
285 select HAVE_PCSPKR_PLATFORM
290 select SYS_HAS_CPU_R4X00
291 select SYS_SUPPORTS_32BIT_KERNEL
292 select SYS_SUPPORTS_64BIT_KERNEL
293 select SYS_SUPPORTS_100HZ
295 This a family of machines based on the MIPS R4030 chipset which was
296 used by several vendors to build RISC/os and Windows NT workstations.
297 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
298 Olivetti M700-10 workstations.
301 bool "Ingenic SoC based machines"
302 select SYS_SUPPORTS_32BIT_KERNEL
303 select SYS_SUPPORTS_LITTLE_ENDIAN
304 select SYS_SUPPORTS_ZBOOT_UART16550
305 select DMA_NONCOHERENT
307 select ARCH_REQUIRE_GPIOLIB
309 select GENERIC_IRQ_CHIP
315 bool "Lantiq based platforms"
316 select DMA_NONCOHERENT
320 select SYS_HAS_CPU_MIPS32_R1
321 select SYS_HAS_CPU_MIPS32_R2
322 select SYS_SUPPORTS_BIG_ENDIAN
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_MIPS16
325 select SYS_SUPPORTS_MULTITHREADING
326 select SYS_HAS_EARLY_PRINTK
327 select ARCH_REQUIRE_GPIOLIB
330 select HAVE_MACH_CLKDEV
334 select PINCTRL_LANTIQ
335 select ARCH_HAS_RESET_CONTROLLER
336 select RESET_CONTROLLER
339 bool "LASAT Networks platforms"
343 select DMA_NONCOHERENT
344 select SYS_HAS_EARLY_PRINTK
347 select PCI_GT64XXX_PCI0
349 select R5000_CPU_SCACHE
350 select SYS_HAS_CPU_R5000
351 select SYS_SUPPORTS_32BIT_KERNEL
352 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
353 select SYS_SUPPORTS_LITTLE_ENDIAN
355 config MACH_LOONGSON32
356 bool "Loongson-1 family of machines"
357 select SYS_SUPPORTS_ZBOOT
359 This enables support for the Loongson-1 family of machines.
361 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
362 the Institute of Computing Technology (ICT), Chinese Academy of
365 config MACH_LOONGSON64
366 bool "Loongson-2/3 family of machines"
367 select SYS_SUPPORTS_ZBOOT
369 This enables the support of Loongson-2/3 family of machines.
371 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
372 family of multi-core CPUs. They are both 64-bit general-purpose
373 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
374 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
375 in the People's Republic of China. The chief architect is Professor
378 config MACH_PISTACHIO
379 bool "IMG Pistachio SoC based boards"
380 select ARCH_REQUIRE_GPIOLIB
384 select CLKSRC_MIPS_GIC
387 select DMA_MAYBE_COHERENT
391 select MIPS_CPU_SCACHE
395 select SYS_HAS_CPU_MIPS32_R2
396 select SYS_SUPPORTS_32BIT_KERNEL
397 select SYS_SUPPORTS_LITTLE_ENDIAN
398 select SYS_SUPPORTS_MIPS_CPS
399 select SYS_SUPPORTS_MULTITHREADING
400 select SYS_SUPPORTS_ZBOOT
401 select SYS_HAS_EARLY_PRINTK
402 select USE_GENERIC_EARLY_PRINTK_8250
405 This enables support for the IMG Pistachio SoC platform.
408 bool "MIPS Malta board"
409 select ARCH_MAY_HAVE_PC_FDC
415 select CLKSRC_MIPS_GIC
417 select DMA_MAYBE_COHERENT
418 select GENERIC_ISA_DMA
419 select HAVE_PCSPKR_PLATFORM
426 select MIPS_CPU_SCACHE
427 select MIPS_L1_CACHE_SHIFT_6
428 select PCI_GT64XXX_PCI0
432 select SYS_HAS_CPU_MIPS32_R1
433 select SYS_HAS_CPU_MIPS32_R2
434 select SYS_HAS_CPU_MIPS32_R3_5
435 select SYS_HAS_CPU_MIPS32_R5
436 select SYS_HAS_CPU_MIPS32_R6
437 select SYS_HAS_CPU_MIPS64_R1
438 select SYS_HAS_CPU_MIPS64_R2
439 select SYS_HAS_CPU_MIPS64_R6
440 select SYS_HAS_CPU_NEVADA
441 select SYS_HAS_CPU_RM7000
442 select SYS_SUPPORTS_32BIT_KERNEL
443 select SYS_SUPPORTS_64BIT_KERNEL
444 select SYS_SUPPORTS_BIG_ENDIAN
445 select SYS_SUPPORTS_HIGHMEM
446 select SYS_SUPPORTS_LITTLE_ENDIAN
447 select SYS_SUPPORTS_MICROMIPS
448 select SYS_SUPPORTS_MIPS_CMP
449 select SYS_SUPPORTS_MIPS_CPS
450 select SYS_SUPPORTS_MIPS16
451 select SYS_SUPPORTS_MULTITHREADING
452 select SYS_SUPPORTS_SMARTMIPS
453 select SYS_SUPPORTS_ZBOOT
455 select ZONE_DMA32 if 64BIT
459 This enables support for the MIPS Technologies Malta evaluation
463 bool "MIPS SEAD3 board"
469 select CLKSRC_MIPS_GIC
471 select CPU_MIPSR2_IRQ_VI
472 select CPU_MIPSR2_IRQ_EI
473 select DMA_NONCOHERENT
478 select SYS_HAS_CPU_MIPS32_R1
479 select SYS_HAS_CPU_MIPS32_R2
480 select SYS_HAS_CPU_MIPS64_R1
481 select SYS_HAS_EARLY_PRINTK
482 select SYS_SUPPORTS_32BIT_KERNEL
483 select SYS_SUPPORTS_64BIT_KERNEL
484 select SYS_SUPPORTS_BIG_ENDIAN
485 select SYS_SUPPORTS_LITTLE_ENDIAN
486 select SYS_SUPPORTS_SMARTMIPS
487 select SYS_SUPPORTS_MICROMIPS
488 select SYS_SUPPORTS_MIPS16
489 select USB_EHCI_BIG_ENDIAN_DESC
490 select USB_EHCI_BIG_ENDIAN_MMIO
493 This enables support for the MIPS Technologies SEAD3 evaluation
497 bool "NEC EMMA2RH Mark-eins board"
501 This enables support for the NEC Electronics Mark-eins boards.
504 bool "NEC VR4100 series based machines"
507 select SYS_HAS_CPU_VR41XX
508 select SYS_SUPPORTS_MIPS16
509 select ARCH_REQUIRE_GPIOLIB
512 bool "NXP STB220 board"
515 Support for NXP Semiconductors STB220 Development Board.
522 Support for NXP Semiconductors STB225 Development Board.
525 bool "PMC-Sierra MSP chipsets"
528 select DMA_NONCOHERENT
530 select NO_EXCEPT_FILL
532 select SYS_HAS_CPU_MIPS32_R1
533 select SYS_HAS_CPU_MIPS32_R2
534 select SYS_SUPPORTS_32BIT_KERNEL
535 select SYS_SUPPORTS_BIG_ENDIAN
536 select SYS_SUPPORTS_MIPS16
539 select SERIAL_8250_CONSOLE
540 select USB_EHCI_BIG_ENDIAN_MMIO
541 select USB_EHCI_BIG_ENDIAN_DESC
543 This adds support for the PMC-Sierra family of Multi-Service
544 Processor System-On-A-Chips. These parts include a number
545 of integrated peripherals, interfaces and DSPs in addition to
546 a variety of MIPS cores.
549 bool "Ralink based machines"
553 select DMA_NONCOHERENT
556 select SYS_HAS_CPU_MIPS32_R1
557 select SYS_HAS_CPU_MIPS32_R2
558 select SYS_SUPPORTS_32BIT_KERNEL
559 select SYS_SUPPORTS_LITTLE_ENDIAN
560 select SYS_SUPPORTS_MIPS16
561 select SYS_HAS_EARLY_PRINTK
562 select HAVE_MACH_CLKDEV
564 select ARCH_HAS_RESET_CONTROLLER
565 select RESET_CONTROLLER
568 bool "SGI IP22 (Indy/Indigo2)"
574 select DEFAULT_SGI_PARTITION
575 select DMA_NONCOHERENT
579 select IP22_CPU_SCACHE
581 select GENERIC_ISA_DMA_SUPPORT_BROKEN
583 select SGI_HAS_INDYDOG
589 select SYS_HAS_CPU_R4X00
590 select SYS_HAS_CPU_R5000
592 # Disable EARLY_PRINTK for now since it leads to overwritten prom
593 # memory during early boot on some machines.
595 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
596 # for a more details discussion
598 # select SYS_HAS_EARLY_PRINTK
599 select SYS_SUPPORTS_32BIT_KERNEL
600 select SYS_SUPPORTS_64BIT_KERNEL
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select MIPS_L1_CACHE_SHIFT_7
604 This are the SGI Indy, Challenge S and Indigo2, as well as certain
605 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
606 that runs on these, say Y here.
609 bool "SGI IP27 (Origin200/2000)"
613 select DEFAULT_SGI_PARTITION
615 select SYS_HAS_EARLY_PRINTK
617 select NR_CPUS_DEFAULT_64
618 select SYS_HAS_CPU_R10000
619 select SYS_SUPPORTS_64BIT_KERNEL
620 select SYS_SUPPORTS_BIG_ENDIAN
621 select SYS_SUPPORTS_NUMA
622 select SYS_SUPPORTS_SMP
623 select MIPS_L1_CACHE_SHIFT_7
625 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
626 workstations. To compile a Linux kernel that runs on these, say Y
630 bool "SGI IP28 (Indigo2 R10k)"
636 select DEFAULT_SGI_PARTITION
637 select DMA_NONCOHERENT
638 select GENERIC_ISA_DMA_SUPPORT_BROKEN
644 select SGI_HAS_INDYDOG
650 select SYS_HAS_CPU_R10000
652 # Disable EARLY_PRINTK for now since it leads to overwritten prom
653 # memory during early boot on some machines.
655 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
656 # for a more details discussion
658 # select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select MIPS_L1_CACHE_SHIFT_7
663 This is the SGI Indigo2 with R10000 processor. To compile a Linux
664 kernel that runs on these, say Y here.
673 select DMA_NONCOHERENT
676 select R5000_CPU_SCACHE
677 select RM7000_CPU_SCACHE
678 select SYS_HAS_CPU_R5000
679 select SYS_HAS_CPU_R10000 if BROKEN
680 select SYS_HAS_CPU_RM7000
681 select SYS_HAS_CPU_NEVADA
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
685 If you want this kernel to run on SGI O2 workstation, say Y here.
688 bool "Sibyte BCM91120C-CRhine"
691 select SIBYTE_BCM1120
693 select SYS_HAS_CPU_SB1
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select SYS_SUPPORTS_LITTLE_ENDIAN
698 bool "Sibyte BCM91120x-Carmel"
701 select SIBYTE_BCM1120
703 select SYS_HAS_CPU_SB1
704 select SYS_SUPPORTS_BIG_ENDIAN
705 select SYS_SUPPORTS_LITTLE_ENDIAN
708 bool "Sibyte BCM91125C-CRhone"
711 select SIBYTE_BCM1125
713 select SYS_HAS_CPU_SB1
714 select SYS_SUPPORTS_BIG_ENDIAN
715 select SYS_SUPPORTS_HIGHMEM
716 select SYS_SUPPORTS_LITTLE_ENDIAN
719 bool "Sibyte BCM91125E-Rhone"
722 select SIBYTE_BCM1125H
724 select SYS_HAS_CPU_SB1
725 select SYS_SUPPORTS_BIG_ENDIAN
726 select SYS_SUPPORTS_LITTLE_ENDIAN
729 bool "Sibyte BCM91250A-SWARM"
732 select HAVE_PATA_PLATFORM
735 select SYS_HAS_CPU_SB1
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_HIGHMEM
738 select SYS_SUPPORTS_LITTLE_ENDIAN
739 select ZONE_DMA32 if 64BIT
741 config SIBYTE_LITTLESUR
742 bool "Sibyte BCM91250C2-LittleSur"
745 select HAVE_PATA_PLATFORM
748 select SYS_HAS_CPU_SB1
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_HIGHMEM
751 select SYS_SUPPORTS_LITTLE_ENDIAN
753 config SIBYTE_SENTOSA
754 bool "Sibyte BCM91250E-Sentosa"
759 select SYS_HAS_CPU_SB1
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_LITTLE_ENDIAN
764 bool "Sibyte BCM91480B-BigSur"
767 select NR_CPUS_DEFAULT_4
768 select SIBYTE_BCM1x80
770 select SYS_HAS_CPU_SB1
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
773 select SYS_SUPPORTS_LITTLE_ENDIAN
774 select ZONE_DMA32 if 64BIT
777 bool "SNI RM200/300/400"
778 select FW_ARC if CPU_LITTLE_ENDIAN
779 select FW_ARC32 if CPU_LITTLE_ENDIAN
780 select FW_SNIPROM if CPU_BIG_ENDIAN
781 select ARCH_MAY_HAVE_PC_FDC
785 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
786 select DMA_NONCOHERENT
787 select GENERIC_ISA_DMA
788 select HAVE_PCSPKR_PLATFORM
795 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
796 select SYS_HAS_CPU_R4X00
797 select SYS_HAS_CPU_R5000
798 select SYS_HAS_CPU_R10000
799 select R5000_CPU_SCACHE
800 select SYS_HAS_EARLY_PRINTK
801 select SYS_SUPPORTS_32BIT_KERNEL
802 select SYS_SUPPORTS_64BIT_KERNEL
803 select SYS_SUPPORTS_BIG_ENDIAN
804 select SYS_SUPPORTS_HIGHMEM
805 select SYS_SUPPORTS_LITTLE_ENDIAN
807 The SNI RM200/300/400 are MIPS-based machines manufactured by
808 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
809 Technology and now in turn merged with Fujitsu. Say Y here to
810 support this machine type.
813 bool "Toshiba TX39 series based machines"
816 bool "Toshiba TX49 series based machines"
818 config MIKROTIK_RB532
819 bool "Mikrotik RB532 boards"
822 select DMA_NONCOHERENT
825 select SYS_HAS_CPU_MIPS32_R1
826 select SYS_SUPPORTS_32BIT_KERNEL
827 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select ARCH_REQUIRE_GPIOLIB
831 select MIPS_L1_CACHE_SHIFT_4
833 Support the Mikrotik(tm) RouterBoard 532 series,
834 based on the IDT RC32434 SoC.
836 config CAVIUM_OCTEON_SOC
837 bool "Cavium Networks Octeon SoC based boards"
839 select ARCH_PHYS_ADDR_T_64BIT
841 select SYS_SUPPORTS_64BIT_KERNEL
842 select SYS_SUPPORTS_BIG_ENDIAN
844 select EDAC_ATOMIC_SCRUB
845 select SYS_SUPPORTS_LITTLE_ENDIAN
846 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
847 select SYS_HAS_EARLY_PRINTK
848 select SYS_HAS_CPU_CAVIUM_OCTEON
853 select ARCH_REQUIRE_GPIOLIB
856 select ARCH_SPARSEMEM_ENABLE
857 select SYS_SUPPORTS_SMP
858 select NR_CPUS_DEFAULT_16
860 select MTD_COMPLEX_MAPPINGS
862 This option supports all of the Octeon reference boards from Cavium
863 Networks. It builds a kernel that dynamically determines the Octeon
864 CPU type and supports all known board reference implementations.
865 Some of the supported boards are:
872 Say Y here for most Octeon reference boards.
875 bool "Netlogic XLR/XLS based systems"
878 select SYS_HAS_CPU_XLR
879 select SYS_SUPPORTS_SMP
882 select SYS_SUPPORTS_32BIT_KERNEL
883 select SYS_SUPPORTS_64BIT_KERNEL
884 select ARCH_PHYS_ADDR_T_64BIT
885 select SYS_SUPPORTS_BIG_ENDIAN
886 select SYS_SUPPORTS_HIGHMEM
888 select NR_CPUS_DEFAULT_32
892 select ZONE_DMA32 if 64BIT
894 select SYS_HAS_EARLY_PRINTK
895 select SYS_SUPPORTS_ZBOOT
896 select SYS_SUPPORTS_ZBOOT_UART16550
898 Support for systems based on Netlogic XLR and XLS processors.
899 Say Y here if you have a XLR or XLS based board.
902 bool "Netlogic XLP based systems"
905 select SYS_HAS_CPU_XLP
906 select SYS_SUPPORTS_SMP
908 select SYS_SUPPORTS_32BIT_KERNEL
909 select SYS_SUPPORTS_64BIT_KERNEL
910 select ARCH_PHYS_ADDR_T_64BIT
911 select ARCH_REQUIRE_GPIOLIB
912 select SYS_SUPPORTS_BIG_ENDIAN
913 select SYS_SUPPORTS_LITTLE_ENDIAN
914 select SYS_SUPPORTS_HIGHMEM
916 select NR_CPUS_DEFAULT_32
920 select ZONE_DMA32 if 64BIT
922 select SYS_HAS_EARLY_PRINTK
924 select SYS_SUPPORTS_ZBOOT
925 select SYS_SUPPORTS_ZBOOT_UART16550
927 This board is based on Netlogic XLP Processor.
928 Say Y here if you have a XLP based board.
931 bool "Para-Virtualized guest system"
935 select SYS_SUPPORTS_64BIT_KERNEL
936 select SYS_SUPPORTS_32BIT_KERNEL
937 select SYS_SUPPORTS_BIG_ENDIAN
938 select SYS_SUPPORTS_SMP
939 select NR_CPUS_DEFAULT_4
940 select SYS_HAS_EARLY_PRINTK
941 select SYS_HAS_CPU_MIPS32_R2
942 select SYS_HAS_CPU_MIPS64_R2
943 select SYS_HAS_CPU_CAVIUM_OCTEON
947 This option supports guest running under ????
951 source "arch/mips/alchemy/Kconfig"
952 source "arch/mips/ath25/Kconfig"
953 source "arch/mips/ath79/Kconfig"
954 source "arch/mips/bcm47xx/Kconfig"
955 source "arch/mips/bcm63xx/Kconfig"
956 source "arch/mips/bmips/Kconfig"
957 source "arch/mips/jazz/Kconfig"
958 source "arch/mips/jz4740/Kconfig"
959 source "arch/mips/lantiq/Kconfig"
960 source "arch/mips/lasat/Kconfig"
961 source "arch/mips/pistachio/Kconfig"
962 source "arch/mips/pmcs-msp71xx/Kconfig"
963 source "arch/mips/ralink/Kconfig"
964 source "arch/mips/sgi-ip27/Kconfig"
965 source "arch/mips/sibyte/Kconfig"
966 source "arch/mips/txx9/Kconfig"
967 source "arch/mips/vr41xx/Kconfig"
968 source "arch/mips/cavium-octeon/Kconfig"
969 source "arch/mips/loongson32/Kconfig"
970 source "arch/mips/loongson64/Kconfig"
971 source "arch/mips/netlogic/Kconfig"
972 source "arch/mips/paravirt/Kconfig"
976 config RWSEM_GENERIC_SPINLOCK
980 config RWSEM_XCHGADD_ALGORITHM
983 config ARCH_HAS_ILOG2_U32
987 config ARCH_HAS_ILOG2_U64
991 config GENERIC_HWEIGHT
995 config GENERIC_CALIBRATE_DELAY
999 config SCHED_OMIT_FRAME_POINTER
1004 # Select some configuration options automatically based on user selections.
1009 config ARCH_MAY_HAVE_PC_FDC
1045 config MIPS_CLOCK_VSYSCALL
1046 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1049 select ARCH_REQUIRE_GPIOLIB
1055 config ARCH_DMA_ADDR_T_64BIT
1056 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1058 config ARCH_SUPPORTS_UPROBES
1061 config DMA_MAYBE_COHERENT
1062 select DMA_NONCOHERENT
1068 config DMA_NONCOHERENT
1070 select NEED_DMA_MAP_STATE
1072 config NEED_DMA_MAP_STATE
1075 config SYS_HAS_EARLY_PRINTK
1079 bool "Support for hot-pluggable CPUs"
1080 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1082 Say Y here to allow turning CPUs off and on. CPUs can be
1083 controlled through /sys/devices/system/cpu.
1084 (Note: power management support will enable this option
1085 automatically on SMP systems. )
1086 Say N if you want to disable CPU hotplug.
1088 config SYS_SUPPORTS_HOTPLUG_CPU
1091 config MIPS_BONITO64
1106 config NO_IOPORT_MAP
1112 config GENERIC_ISA_DMA
1114 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1117 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1119 select GENERIC_ISA_DMA
1124 config HOLES_IN_ZONE
1128 # Endianness selection. Sufficiently obscure so many users don't know what to
1129 # answer,so we try hard to limit the available choices. Also the use of a
1130 # choice statement should be more obvious to the user.
1133 prompt "Endianness selection"
1135 Some MIPS machines can be configured for either little or big endian
1136 byte order. These modes require different kernels and a different
1137 Linux distribution. In general there is one preferred byteorder for a
1138 particular system but some systems are just as commonly used in the
1139 one or the other endianness.
1141 config CPU_BIG_ENDIAN
1143 depends on SYS_SUPPORTS_BIG_ENDIAN
1145 config CPU_LITTLE_ENDIAN
1146 bool "Little endian"
1147 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1154 config SYS_SUPPORTS_APM_EMULATION
1157 config SYS_SUPPORTS_BIG_ENDIAN
1160 config SYS_SUPPORTS_LITTLE_ENDIAN
1163 config SYS_SUPPORTS_HUGETLBFS
1165 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1168 config MIPS_HUGE_TLB_SUPPORT
1169 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1186 config PCI_GT64XXX_PCI0
1189 config NO_EXCEPT_FILL
1196 select DMA_NONCOHERENT
1198 select SWAP_IO_SPACE
1199 select SYS_HAS_CPU_R5500
1200 select SYS_SUPPORTS_32BIT_KERNEL
1201 select SYS_SUPPORTS_64BIT_KERNEL
1202 select SYS_SUPPORTS_BIG_ENDIAN
1209 select DMA_NONCOHERENT
1210 select SYS_HAS_CPU_MIPS32_R2
1211 select SYS_SUPPORTS_32BIT_KERNEL
1212 select SYS_SUPPORTS_LITTLE_ENDIAN
1213 select SYS_SUPPORTS_BIG_ENDIAN
1214 select SYS_SUPPORTS_MIPS16
1215 select CPU_MIPSR2_IRQ_VI
1224 config SWAP_IO_SPACE
1227 config SGI_HAS_INDYDOG
1239 config SGI_HAS_ZILOG
1242 config SGI_HAS_I8042
1245 config DEFAULT_SGI_PARTITION
1257 config MIPS_L1_CACHE_SHIFT_4
1260 config MIPS_L1_CACHE_SHIFT_5
1263 config MIPS_L1_CACHE_SHIFT_6
1266 config MIPS_L1_CACHE_SHIFT_7
1269 config MIPS_L1_CACHE_SHIFT
1271 default "7" if MIPS_L1_CACHE_SHIFT_7
1272 default "6" if MIPS_L1_CACHE_SHIFT_6
1273 default "5" if MIPS_L1_CACHE_SHIFT_5
1274 default "4" if MIPS_L1_CACHE_SHIFT_4
1277 config HAVE_STD_PC_SERIAL_PORT
1281 bool "ARC console support"
1282 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1286 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1291 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1300 menu "CPU selection"
1306 config CPU_LOONGSON3
1307 bool "Loongson 3 CPU"
1308 depends on SYS_HAS_CPU_LOONGSON3
1309 select CPU_SUPPORTS_64BIT_KERNEL
1310 select CPU_SUPPORTS_HIGHMEM
1311 select CPU_SUPPORTS_HUGEPAGES
1312 select WEAK_ORDERING
1313 select WEAK_REORDERING_BEYOND_LLSC
1314 select ARCH_REQUIRE_GPIOLIB
1316 The Loongson 3 processor implements the MIPS64R2 instruction
1317 set with many extensions.
1319 config CPU_LOONGSON2E
1321 depends on SYS_HAS_CPU_LOONGSON2E
1322 select CPU_LOONGSON2
1324 The Loongson 2E processor implements the MIPS III instruction set
1325 with many extensions.
1327 It has an internal FPGA northbridge, which is compatible to
1330 config CPU_LOONGSON2F
1332 depends on SYS_HAS_CPU_LOONGSON2F
1333 select CPU_LOONGSON2
1334 select ARCH_REQUIRE_GPIOLIB
1336 The Loongson 2F processor implements the MIPS III instruction set
1337 with many extensions.
1339 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1340 have a similar programming interface with FPGA northbridge used in
1343 config CPU_LOONGSON1B
1345 depends on SYS_HAS_CPU_LOONGSON1B
1346 select CPU_LOONGSON1
1348 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1349 release 2 instruction set.
1351 config CPU_MIPS32_R1
1352 bool "MIPS32 Release 1"
1353 depends on SYS_HAS_CPU_MIPS32_R1
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_32BIT_KERNEL
1356 select CPU_SUPPORTS_HIGHMEM
1358 Choose this option to build a kernel for release 1 or later of the
1359 MIPS32 architecture. Most modern embedded systems with a 32-bit
1360 MIPS processor are based on a MIPS32 processor. If you know the
1361 specific type of processor in your system, choose those that one
1362 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1363 Release 2 of the MIPS32 architecture is available since several
1364 years so chances are you even have a MIPS32 Release 2 processor
1365 in which case you should choose CPU_MIPS32_R2 instead for better
1368 config CPU_MIPS32_R2
1369 bool "MIPS32 Release 2"
1370 depends on SYS_HAS_CPU_MIPS32_R2
1371 select CPU_HAS_PREFETCH
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1374 select CPU_SUPPORTS_MSA
1377 Choose this option to build a kernel for release 2 or later of the
1378 MIPS32 architecture. Most modern embedded systems with a 32-bit
1379 MIPS processor are based on a MIPS32 processor. If you know the
1380 specific type of processor in your system, choose those that one
1381 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1383 config CPU_MIPS32_R6
1384 bool "MIPS32 Release 6"
1385 depends on SYS_HAS_CPU_MIPS32_R6
1386 select CPU_HAS_PREFETCH
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1389 select CPU_SUPPORTS_MSA
1392 select MIPS_O32_FP64_SUPPORT
1394 Choose this option to build a kernel for release 6 or later of the
1395 MIPS32 architecture. New MIPS processors, starting with the Warrior
1396 family, are based on a MIPS32r6 processor. If you own an older
1397 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1399 config CPU_MIPS64_R1
1400 bool "MIPS64 Release 1"
1401 depends on SYS_HAS_CPU_MIPS64_R1
1402 select CPU_HAS_PREFETCH
1403 select CPU_SUPPORTS_32BIT_KERNEL
1404 select CPU_SUPPORTS_64BIT_KERNEL
1405 select CPU_SUPPORTS_HIGHMEM
1406 select CPU_SUPPORTS_HUGEPAGES
1408 Choose this option to build a kernel for release 1 or later of the
1409 MIPS64 architecture. Many modern embedded systems with a 64-bit
1410 MIPS processor are based on a MIPS64 processor. If you know the
1411 specific type of processor in your system, choose those that one
1412 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1413 Release 2 of the MIPS64 architecture is available since several
1414 years so chances are you even have a MIPS64 Release 2 processor
1415 in which case you should choose CPU_MIPS64_R2 instead for better
1418 config CPU_MIPS64_R2
1419 bool "MIPS64 Release 2"
1420 depends on SYS_HAS_CPU_MIPS64_R2
1421 select CPU_HAS_PREFETCH
1422 select CPU_SUPPORTS_32BIT_KERNEL
1423 select CPU_SUPPORTS_64BIT_KERNEL
1424 select CPU_SUPPORTS_HIGHMEM
1425 select CPU_SUPPORTS_HUGEPAGES
1426 select CPU_SUPPORTS_MSA
1428 Choose this option to build a kernel for release 2 or later of the
1429 MIPS64 architecture. Many modern embedded systems with a 64-bit
1430 MIPS processor are based on a MIPS64 processor. If you know the
1431 specific type of processor in your system, choose those that one
1432 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1434 config CPU_MIPS64_R6
1435 bool "MIPS64 Release 6"
1436 depends on SYS_HAS_CPU_MIPS64_R6
1437 select CPU_HAS_PREFETCH
1438 select CPU_SUPPORTS_32BIT_KERNEL
1439 select CPU_SUPPORTS_64BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1441 select CPU_SUPPORTS_MSA
1443 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1445 Choose this option to build a kernel for release 6 or later of the
1446 MIPS64 architecture. New MIPS processors, starting with the Warrior
1447 family, are based on a MIPS64r6 processor. If you own an older
1448 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1452 depends on SYS_HAS_CPU_R3000
1454 select CPU_SUPPORTS_32BIT_KERNEL
1455 select CPU_SUPPORTS_HIGHMEM
1457 Please make sure to pick the right CPU type. Linux/MIPS is not
1458 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1459 *not* work on R4000 machines and vice versa. However, since most
1460 of the supported machines have an R4000 (or similar) CPU, R4x00
1461 might be a safe bet. If the resulting kernel does not work,
1462 try to recompile with R3000.
1466 depends on SYS_HAS_CPU_TX39XX
1467 select CPU_SUPPORTS_32BIT_KERNEL
1471 depends on SYS_HAS_CPU_VR41XX
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_64BIT_KERNEL
1475 The options selects support for the NEC VR4100 series of processors.
1476 Only choose this option if you have one of these processors as a
1477 kernel built with this option will not run on any other type of
1478 processor or vice versa.
1482 depends on SYS_HAS_CPU_R4300
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_64BIT_KERNEL
1486 MIPS Technologies R4300-series processors.
1490 depends on SYS_HAS_CPU_R4X00
1491 select CPU_SUPPORTS_32BIT_KERNEL
1492 select CPU_SUPPORTS_64BIT_KERNEL
1493 select CPU_SUPPORTS_HUGEPAGES
1495 MIPS Technologies R4000-series processors other than 4300, including
1496 the R4000, R4400, R4600, and 4700.
1500 depends on SYS_HAS_CPU_TX49XX
1501 select CPU_HAS_PREFETCH
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select CPU_SUPPORTS_64BIT_KERNEL
1504 select CPU_SUPPORTS_HUGEPAGES
1508 depends on SYS_HAS_CPU_R5000
1509 select CPU_SUPPORTS_32BIT_KERNEL
1510 select CPU_SUPPORTS_64BIT_KERNEL
1511 select CPU_SUPPORTS_HUGEPAGES
1513 MIPS Technologies R5000-series processors other than the Nevada.
1517 depends on SYS_HAS_CPU_R5432
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1520 select CPU_SUPPORTS_HUGEPAGES
1524 depends on SYS_HAS_CPU_R5500
1525 select CPU_SUPPORTS_32BIT_KERNEL
1526 select CPU_SUPPORTS_64BIT_KERNEL
1527 select CPU_SUPPORTS_HUGEPAGES
1529 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1534 depends on SYS_HAS_CPU_R6000
1535 select CPU_SUPPORTS_32BIT_KERNEL
1537 MIPS Technologies R6000 and R6000A series processors. Note these
1538 processors are extremely rare and the support for them is incomplete.
1542 depends on SYS_HAS_CPU_NEVADA
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select CPU_SUPPORTS_64BIT_KERNEL
1545 select CPU_SUPPORTS_HUGEPAGES
1547 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1551 depends on SYS_HAS_CPU_R8000
1552 select CPU_HAS_PREFETCH
1553 select CPU_SUPPORTS_64BIT_KERNEL
1555 MIPS Technologies R8000 processors. Note these processors are
1556 uncommon and the support for them is incomplete.
1560 depends on SYS_HAS_CPU_R10000
1561 select CPU_HAS_PREFETCH
1562 select CPU_SUPPORTS_32BIT_KERNEL
1563 select CPU_SUPPORTS_64BIT_KERNEL
1564 select CPU_SUPPORTS_HIGHMEM
1565 select CPU_SUPPORTS_HUGEPAGES
1567 MIPS Technologies R10000-series processors.
1571 depends on SYS_HAS_CPU_RM7000
1572 select CPU_HAS_PREFETCH
1573 select CPU_SUPPORTS_32BIT_KERNEL
1574 select CPU_SUPPORTS_64BIT_KERNEL
1575 select CPU_SUPPORTS_HIGHMEM
1576 select CPU_SUPPORTS_HUGEPAGES
1580 depends on SYS_HAS_CPU_SB1
1581 select CPU_SUPPORTS_32BIT_KERNEL
1582 select CPU_SUPPORTS_64BIT_KERNEL
1583 select CPU_SUPPORTS_HIGHMEM
1584 select CPU_SUPPORTS_HUGEPAGES
1585 select WEAK_ORDERING
1587 config CPU_CAVIUM_OCTEON
1588 bool "Cavium Octeon processor"
1589 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1590 select CPU_HAS_PREFETCH
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select WEAK_ORDERING
1593 select CPU_SUPPORTS_HIGHMEM
1594 select CPU_SUPPORTS_HUGEPAGES
1595 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1596 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1597 select MIPS_L1_CACHE_SHIFT_7
1599 The Cavium Octeon processor is a highly integrated chip containing
1600 many ethernet hardware widgets for networking tasks. The processor
1601 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1602 Full details can be found at http://www.caviumnetworks.com.
1605 bool "Broadcom BMIPS"
1606 depends on SYS_HAS_CPU_BMIPS
1608 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1609 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1610 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1611 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select DMA_NONCOHERENT
1615 select SWAP_IO_SPACE
1616 select WEAK_ORDERING
1617 select CPU_SUPPORTS_HIGHMEM
1618 select CPU_HAS_PREFETCH
1620 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1623 bool "Netlogic XLR SoC"
1624 depends on SYS_HAS_CPU_XLR
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HIGHMEM
1628 select CPU_SUPPORTS_HUGEPAGES
1629 select WEAK_ORDERING
1630 select WEAK_REORDERING_BEYOND_LLSC
1632 Netlogic Microsystems XLR/XLS processors.
1635 bool "Netlogic XLP SoC"
1636 depends on SYS_HAS_CPU_XLP
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HIGHMEM
1640 select WEAK_ORDERING
1641 select WEAK_REORDERING_BEYOND_LLSC
1642 select CPU_HAS_PREFETCH
1644 select CPU_SUPPORTS_HUGEPAGES
1646 Netlogic Microsystems XLP processors.
1649 config CPU_MIPS32_3_5_FEATURES
1650 bool "MIPS32 Release 3.5 Features"
1651 depends on SYS_HAS_CPU_MIPS32_R3_5
1652 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1654 Choose this option to build a kernel for release 2 or later of the
1655 MIPS32 architecture including features from the 3.5 release such as
1656 support for Enhanced Virtual Addressing (EVA).
1658 config CPU_MIPS32_3_5_EVA
1659 bool "Enhanced Virtual Addressing (EVA)"
1660 depends on CPU_MIPS32_3_5_FEATURES
1664 Choose this option if you want to enable the Enhanced Virtual
1665 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1666 One of its primary benefits is an increase in the maximum size
1667 of lowmem (up to 3GB). If unsure, say 'N' here.
1669 config CPU_MIPS32_R5_FEATURES
1670 bool "MIPS32 Release 5 Features"
1671 depends on SYS_HAS_CPU_MIPS32_R5
1672 depends on CPU_MIPS32_R2
1674 Choose this option to build a kernel for release 2 or later of the
1675 MIPS32 architecture including features from release 5 such as
1676 support for Extended Physical Addressing (XPA).
1678 config CPU_MIPS32_R5_XPA
1679 bool "Extended Physical Addressing (XPA)"
1680 depends on CPU_MIPS32_R5_FEATURES
1682 depends on !PAGE_SIZE_4KB
1683 depends on SYS_SUPPORTS_HIGHMEM
1686 select ARCH_PHYS_ADDR_T_64BIT
1689 Choose this option if you want to enable the Extended Physical
1690 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1691 benefit is to increase physical addressing equal to or greater
1692 than 40 bits. Note that this has the side effect of turning on
1693 64-bit addressing which in turn makes the PTEs 64-bit in size.
1694 If unsure, say 'N' here.
1697 config CPU_NOP_WORKAROUNDS
1700 config CPU_JUMP_WORKAROUNDS
1703 config CPU_LOONGSON2F_WORKAROUNDS
1704 bool "Loongson 2F Workarounds"
1706 select CPU_NOP_WORKAROUNDS
1707 select CPU_JUMP_WORKAROUNDS
1709 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1710 require workarounds. Without workarounds the system may hang
1711 unexpectedly. For more information please refer to the gas
1712 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1714 Loongson 2F03 and later have fixed these issues and no workarounds
1715 are needed. The workarounds have no significant side effect on them
1716 but may decrease the performance of the system so this option should
1717 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1720 If unsure, please say Y.
1721 endif # CPU_LOONGSON2F
1723 config SYS_SUPPORTS_ZBOOT
1725 select HAVE_KERNEL_GZIP
1726 select HAVE_KERNEL_BZIP2
1727 select HAVE_KERNEL_LZ4
1728 select HAVE_KERNEL_LZMA
1729 select HAVE_KERNEL_LZO
1730 select HAVE_KERNEL_XZ
1732 config SYS_SUPPORTS_ZBOOT_UART16550
1734 select SYS_SUPPORTS_ZBOOT
1736 config CPU_LOONGSON2
1738 select CPU_SUPPORTS_32BIT_KERNEL
1739 select CPU_SUPPORTS_64BIT_KERNEL
1740 select CPU_SUPPORTS_HIGHMEM
1741 select CPU_SUPPORTS_HUGEPAGES
1743 config CPU_LOONGSON1
1747 select CPU_HAS_PREFETCH
1748 select CPU_SUPPORTS_32BIT_KERNEL
1749 select CPU_SUPPORTS_HIGHMEM
1750 select CPU_SUPPORTS_CPUFREQ
1752 config CPU_BMIPS32_3300
1753 select SMP_UP if SMP
1756 config CPU_BMIPS4350
1758 select SYS_SUPPORTS_SMP
1759 select SYS_SUPPORTS_HOTPLUG_CPU
1761 config CPU_BMIPS4380
1763 select MIPS_L1_CACHE_SHIFT_6
1764 select SYS_SUPPORTS_SMP
1765 select SYS_SUPPORTS_HOTPLUG_CPU
1767 config CPU_BMIPS5000
1769 select MIPS_CPU_SCACHE
1770 select MIPS_L1_CACHE_SHIFT_7
1771 select SYS_SUPPORTS_SMP
1772 select SYS_SUPPORTS_HOTPLUG_CPU
1774 config SYS_HAS_CPU_LOONGSON3
1776 select CPU_SUPPORTS_CPUFREQ
1778 config SYS_HAS_CPU_LOONGSON2E
1781 config SYS_HAS_CPU_LOONGSON2F
1783 select CPU_SUPPORTS_CPUFREQ
1784 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1785 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1787 config SYS_HAS_CPU_LOONGSON1B
1790 config SYS_HAS_CPU_MIPS32_R1
1793 config SYS_HAS_CPU_MIPS32_R2
1796 config SYS_HAS_CPU_MIPS32_R3_5
1799 config SYS_HAS_CPU_MIPS32_R5
1802 config SYS_HAS_CPU_MIPS32_R6
1805 config SYS_HAS_CPU_MIPS64_R1
1808 config SYS_HAS_CPU_MIPS64_R2
1811 config SYS_HAS_CPU_MIPS64_R6
1814 config SYS_HAS_CPU_R3000
1817 config SYS_HAS_CPU_TX39XX
1820 config SYS_HAS_CPU_VR41XX
1823 config SYS_HAS_CPU_R4300
1826 config SYS_HAS_CPU_R4X00
1829 config SYS_HAS_CPU_TX49XX
1832 config SYS_HAS_CPU_R5000
1835 config SYS_HAS_CPU_R5432
1838 config SYS_HAS_CPU_R5500
1841 config SYS_HAS_CPU_R6000
1844 config SYS_HAS_CPU_NEVADA
1847 config SYS_HAS_CPU_R8000
1850 config SYS_HAS_CPU_R10000
1853 config SYS_HAS_CPU_RM7000
1856 config SYS_HAS_CPU_SB1
1859 config SYS_HAS_CPU_CAVIUM_OCTEON
1862 config SYS_HAS_CPU_BMIPS
1865 config SYS_HAS_CPU_BMIPS32_3300
1867 select SYS_HAS_CPU_BMIPS
1869 config SYS_HAS_CPU_BMIPS4350
1871 select SYS_HAS_CPU_BMIPS
1873 config SYS_HAS_CPU_BMIPS4380
1875 select SYS_HAS_CPU_BMIPS
1877 config SYS_HAS_CPU_BMIPS5000
1879 select SYS_HAS_CPU_BMIPS
1881 config SYS_HAS_CPU_XLR
1884 config SYS_HAS_CPU_XLP
1887 config MIPS_MALTA_PM
1888 depends on MIPS_MALTA
1894 # CPU may reorder R->R, R->W, W->R, W->W
1895 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1897 config WEAK_ORDERING
1901 # CPU may reorder reads and writes beyond LL/SC
1902 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1904 config WEAK_REORDERING_BEYOND_LLSC
1909 # These two indicate any level of the MIPS32 and MIPS64 architecture
1913 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1917 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1920 # These two indicate the revision of the architecture, either Release 1 or Release 2
1924 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1928 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1933 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1942 config SYS_SUPPORTS_32BIT_KERNEL
1944 config SYS_SUPPORTS_64BIT_KERNEL
1946 config CPU_SUPPORTS_32BIT_KERNEL
1948 config CPU_SUPPORTS_64BIT_KERNEL
1950 config CPU_SUPPORTS_CPUFREQ
1952 config CPU_SUPPORTS_ADDRWINCFG
1954 config CPU_SUPPORTS_HUGEPAGES
1956 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1958 config MIPS_PGD_C0_CONTEXT
1960 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1963 # Set to y for ptrace access to watch registers.
1965 config HARDWARE_WATCHPOINTS
1967 default y if CPU_MIPSR1 || CPU_MIPSR2
1972 prompt "Kernel code model"
1974 You should only select this option if you have a workload that
1975 actually benefits from 64-bit processing or if your machine has
1976 large memory. You will only be presented a single option in this
1977 menu if your system does not support both 32-bit and 64-bit kernels.
1980 bool "32-bit kernel"
1981 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1984 Select this option if you want to build a 32-bit kernel.
1987 bool "64-bit kernel"
1988 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1990 Select this option if you want to build a 64-bit kernel.
1995 bool "KVM Guest Kernel"
1996 depends on BROKEN_ON_SMP
1998 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
2000 config KVM_GUEST_TIMER_FREQ
2001 int "Count/Compare Timer Frequency (MHz)"
2002 depends on KVM_GUEST
2005 Set this to non-zero if building a guest kernel for KVM to skip RTC
2006 emulation when determining guest CPU Frequency. Instead, the guest's
2007 timer frequency is specified directly.
2010 prompt "Kernel page size"
2011 default PAGE_SIZE_4KB
2013 config PAGE_SIZE_4KB
2015 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2017 This option select the standard 4kB Linux page size. On some
2018 R3000-family processors this is the only available page size. Using
2019 4kB page size will minimize memory consumption and is therefore
2020 recommended for low memory systems.
2022 config PAGE_SIZE_8KB
2024 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2026 Using 8kB page size will result in higher performance kernel at
2027 the price of higher memory consumption. This option is available
2028 only on R8000 and cnMIPS processors. Note that you will need a
2029 suitable Linux distribution to support this.
2031 config PAGE_SIZE_16KB
2033 depends on !CPU_R3000 && !CPU_TX39XX
2035 Using 16kB page size will result in higher performance kernel at
2036 the price of higher memory consumption. This option is available on
2037 all non-R3000 family processors. Note that you will need a suitable
2038 Linux distribution to support this.
2040 config PAGE_SIZE_32KB
2042 depends on CPU_CAVIUM_OCTEON
2044 Using 32kB page size will result in higher performance kernel at
2045 the price of higher memory consumption. This option is available
2046 only on cnMIPS cores. Note that you will need a suitable Linux
2047 distribution to support this.
2049 config PAGE_SIZE_64KB
2051 depends on !CPU_R3000 && !CPU_TX39XX
2053 Using 64kB page size will result in higher performance kernel at
2054 the price of higher memory consumption. This option is available on
2055 all non-R3000 family processor. Not that at the time of this
2056 writing this option is still high experimental.
2060 config FORCE_MAX_ZONEORDER
2061 int "Maximum zone order"
2062 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2063 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2064 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2065 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2066 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2067 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2071 The kernel memory allocator divides physically contiguous memory
2072 blocks into "zones", where each zone is a power of two number of
2073 pages. This option selects the largest power of two that the kernel
2074 keeps in the memory allocator. If you need to allocate very large
2075 blocks of physically contiguous memory, then you may need to
2076 increase this value.
2078 This config option is actually maximum order plus one. For example,
2079 a value of 11 means that the largest free memory block is 2^10 pages.
2081 The page size is not necessarily 4KB. Keep this in mind
2082 when choosing a value for this option.
2087 config IP22_CPU_SCACHE
2092 # Support for a MIPS32 / MIPS64 style S-caches
2094 config MIPS_CPU_SCACHE
2098 config R5000_CPU_SCACHE
2102 config RM7000_CPU_SCACHE
2106 config SIBYTE_DMA_PAGEOPS
2107 bool "Use DMA to clear/copy pages"
2110 Instead of using the CPU to zero and copy pages, use a Data Mover
2111 channel. These DMA channels are otherwise unused by the standard
2112 SiByte Linux port. Seems to give a small performance benefit.
2114 config CPU_HAS_PREFETCH
2117 config CPU_GENERIC_DUMP_TLB
2119 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2123 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2125 config CPU_R4K_CACHE_TLB
2127 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2130 bool "MIPS MT SMP support (1 TC on each available VPE)"
2131 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2132 select CPU_MIPSR2_IRQ_VI
2133 select CPU_MIPSR2_IRQ_EI
2139 select SYS_SUPPORTS_SMP
2140 select SYS_SUPPORTS_SCHED_SMT
2141 select MIPS_PERF_SHARED_TC_COUNTERS
2143 This is a kernel model which is known as SMVP. This is supported
2144 on cores with the MT ASE and uses the available VPEs to implement
2145 virtual processors which supports SMP. This is equivalent to the
2146 Intel Hyperthreading feature. For further information go to
2147 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2153 bool "SMT (multithreading) scheduler support"
2154 depends on SYS_SUPPORTS_SCHED_SMT
2157 SMT scheduler support improves the CPU scheduler's decision making
2158 when dealing with MIPS MT enabled cores at a cost of slightly
2159 increased overhead in some places. If unsure say N here.
2161 config SYS_SUPPORTS_SCHED_SMT
2164 config SYS_SUPPORTS_MULTITHREADING
2167 config MIPS_MT_FPAFF
2168 bool "Dynamic FPU affinity for FP-intensive threads"
2170 depends on MIPS_MT_SMP
2172 config MIPSR2_TO_R6_EMULATOR
2173 bool "MIPS R2-to-R6 emulator"
2174 depends on CPU_MIPSR6 && !SMP
2177 Choose this option if you want to run non-R6 MIPS userland code.
2178 Even if you say 'Y' here, the emulator will still be disabled by
2179 default. You can enable it using the 'mipsr2emu' kernel option.
2180 The only reason this is a build-time option is to save ~14K from the
2182 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2183 depends on SMP && CPU_MIPSR6
2185 config MIPS_VPE_LOADER
2186 bool "VPE loader support."
2187 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2188 select CPU_MIPSR2_IRQ_VI
2189 select CPU_MIPSR2_IRQ_EI
2192 Includes a loader for loading an elf relocatable object
2193 onto another VPE and running it.
2195 config MIPS_VPE_LOADER_CMP
2198 depends on MIPS_VPE_LOADER && MIPS_CMP
2200 config MIPS_VPE_LOADER_MT
2203 depends on MIPS_VPE_LOADER && !MIPS_CMP
2205 config MIPS_VPE_LOADER_TOM
2206 bool "Load VPE program into memory hidden from linux"
2207 depends on MIPS_VPE_LOADER
2210 The loader can use memory that is present but has been hidden from
2211 Linux using the kernel command line option "mem=xxMB". It's up to
2212 you to ensure the amount you put in the option and the space your
2213 program requires is less or equal to the amount physically present.
2215 config MIPS_VPE_APSP_API
2216 bool "Enable support for AP/SP API (RTLX)"
2217 depends on MIPS_VPE_LOADER
2220 config MIPS_VPE_APSP_API_CMP
2223 depends on MIPS_VPE_APSP_API && MIPS_CMP
2225 config MIPS_VPE_APSP_API_MT
2228 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2231 bool "MIPS CMP framework support (DEPRECATED)"
2232 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2236 select SYS_SUPPORTS_SMP
2237 select WEAK_ORDERING
2240 Select this if you are using a bootloader which implements the "CMP
2241 framework" protocol (ie. YAMON) and want your kernel to make use of
2242 its ability to start secondary CPUs.
2244 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2248 bool "MIPS Coherent Processing System support"
2249 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2252 select MIPS_CPS_PM if HOTPLUG_CPU
2255 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2256 select SYS_SUPPORTS_HOTPLUG_CPU
2257 select SYS_SUPPORTS_SMP
2258 select WEAK_ORDERING
2260 Select this if you wish to run an SMP kernel across multiple cores
2261 within a MIPS Coherent Processing System. When this option is
2262 enabled the kernel will probe for other cores and boot them with
2263 no external assistance. It is safe to enable this when hardware
2264 support is unavailable.
2280 config SB1_PASS_2_WORKAROUNDS
2282 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2285 config SB1_PASS_2_1_WORKAROUNDS
2287 depends on CPU_SB1 && CPU_SB1_PASS_2
2291 config ARCH_PHYS_ADDR_T_64BIT
2295 prompt "SmartMIPS or microMIPS ASE support"
2297 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2300 Select this if you want neither microMIPS nor SmartMIPS support
2302 config CPU_HAS_SMARTMIPS
2303 depends on SYS_SUPPORTS_SMARTMIPS
2306 SmartMIPS is a extension of the MIPS32 architecture aimed at
2307 increased security at both hardware and software level for
2308 smartcards. Enabling this option will allow proper use of the
2309 SmartMIPS instructions by Linux applications. However a kernel with
2310 this option will not work on a MIPS core without SmartMIPS core. If
2311 you don't know you probably don't have SmartMIPS and should say N
2314 config CPU_MICROMIPS
2315 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2318 When this option is enabled the kernel will be built using the
2324 bool "Support for the MIPS SIMD Architecture"
2325 depends on CPU_SUPPORTS_MSA
2326 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2328 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2329 and a set of SIMD instructions to operate on them. When this option
2330 is enabled the kernel will support allocating & switching MSA
2331 vector register contexts. If you know that your kernel will only be
2332 running on CPUs which do not support MSA or that your userland will
2333 not be making use of it then you may wish to say N here to reduce
2334 the size & complexity of your kernel.
2345 # Vectored interrupt mode is an R2 feature
2347 config CPU_MIPSR2_IRQ_VI
2351 # Extended interrupt mode is an R2 feature
2353 config CPU_MIPSR2_IRQ_EI
2358 depends on !CPU_R3000
2364 config CPU_DADDI_WORKAROUNDS
2367 config CPU_R4000_WORKAROUNDS
2369 select CPU_R4400_WORKAROUNDS
2371 config CPU_R4400_WORKAROUNDS
2375 # - Highmem only makes sense for the 32-bit kernel.
2376 # - The current highmem code will only work properly on physically indexed
2377 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2378 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2379 # moment we protect the user and offer the highmem option only on machines
2380 # where it's known to be safe. This will not offer highmem on a few systems
2381 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2382 # indexed CPUs but we're playing safe.
2383 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2384 # know they might have memory configurations that could make use of highmem
2388 bool "High Memory Support"
2389 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2391 config CPU_SUPPORTS_HIGHMEM
2394 config SYS_SUPPORTS_HIGHMEM
2397 config SYS_SUPPORTS_SMARTMIPS
2400 config SYS_SUPPORTS_MICROMIPS
2403 config SYS_SUPPORTS_MIPS16
2406 This option must be set if a kernel might be executed on a MIPS16-
2407 enabled CPU even if MIPS16 is not actually being used. In other
2408 words, it makes the kernel MIPS16-tolerant.
2410 config CPU_SUPPORTS_MSA
2413 config ARCH_FLATMEM_ENABLE
2415 depends on !NUMA && !CPU_LOONGSON2
2417 config ARCH_DISCONTIGMEM_ENABLE
2419 default y if SGI_IP27
2421 Say Y to support efficient handling of discontiguous physical memory,
2422 for architectures which are either NUMA (Non-Uniform Memory Access)
2423 or have huge holes in the physical address space for other reasons.
2424 See <file:Documentation/vm/numa> for more.
2426 config ARCH_SPARSEMEM_ENABLE
2428 select SPARSEMEM_STATIC
2432 depends on SYS_SUPPORTS_NUMA
2434 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2435 Access). This option improves performance on systems with more
2436 than two nodes; on two node systems it is generally better to
2437 leave it disabled; on single node systems disable this option
2440 config SYS_SUPPORTS_NUMA
2446 depends on NEED_MULTIPLE_NODES
2448 config HW_PERF_EVENTS
2449 bool "Enable hardware performance counter support for perf events"
2450 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2453 Enable hardware performance counter support for perf events. If
2454 disabled, perf events will use software events only.
2459 bool "Multi-Processing support"
2460 depends on SYS_SUPPORTS_SMP
2462 This enables support for systems with more than one CPU. If you have
2463 a system with only one CPU, say N. If you have a system with more
2464 than one CPU, say Y.
2466 If you say N here, the kernel will run on uni- and multiprocessor
2467 machines, but will use only one CPU of a multiprocessor machine. If
2468 you say Y here, the kernel will run on many, but not all,
2469 uniprocessor machines. On a uniprocessor machine, the kernel
2470 will run faster if you say N here.
2472 People using multiprocessor machines who say Y here should also say
2473 Y to "Enhanced Real Time Clock Support", below.
2475 See also the SMP-HOWTO available at
2476 <http://www.tldp.org/docs.html#howto>.
2478 If you don't know what to do here, say N.
2483 config SYS_SUPPORTS_MIPS_CMP
2486 config SYS_SUPPORTS_MIPS_CPS
2489 config SYS_SUPPORTS_SMP
2492 config NR_CPUS_DEFAULT_4
2495 config NR_CPUS_DEFAULT_8
2498 config NR_CPUS_DEFAULT_16
2501 config NR_CPUS_DEFAULT_32
2504 config NR_CPUS_DEFAULT_64
2508 int "Maximum number of CPUs (2-256)"
2511 default "4" if NR_CPUS_DEFAULT_4
2512 default "8" if NR_CPUS_DEFAULT_8
2513 default "16" if NR_CPUS_DEFAULT_16
2514 default "32" if NR_CPUS_DEFAULT_32
2515 default "64" if NR_CPUS_DEFAULT_64
2517 This allows you to specify the maximum number of CPUs which this
2518 kernel will support. The maximum supported value is 32 for 32-bit
2519 kernel and 64 for 64-bit kernels; the minimum value which makes
2520 sense is 1 for Qemu (useful only for kernel debugging purposes)
2521 and 2 for all others.
2523 This is purely to save memory - each supported CPU adds
2524 approximately eight kilobytes to the kernel image. For best
2525 performance should round up your number of processors to the next
2528 config MIPS_PERF_SHARED_TC_COUNTERS
2532 # Timer Interrupt Frequency Configuration
2536 prompt "Timer frequency"
2539 Allows the configuration of the timer frequency.
2542 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2545 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2548 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2551 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2554 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2557 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2560 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2563 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2567 config SYS_SUPPORTS_24HZ
2570 config SYS_SUPPORTS_48HZ
2573 config SYS_SUPPORTS_100HZ
2576 config SYS_SUPPORTS_128HZ
2579 config SYS_SUPPORTS_250HZ
2582 config SYS_SUPPORTS_256HZ
2585 config SYS_SUPPORTS_1000HZ
2588 config SYS_SUPPORTS_1024HZ
2591 config SYS_SUPPORTS_ARBIT_HZ
2593 default y if !SYS_SUPPORTS_24HZ && \
2594 !SYS_SUPPORTS_48HZ && \
2595 !SYS_SUPPORTS_100HZ && \
2596 !SYS_SUPPORTS_128HZ && \
2597 !SYS_SUPPORTS_250HZ && \
2598 !SYS_SUPPORTS_256HZ && \
2599 !SYS_SUPPORTS_1000HZ && \
2600 !SYS_SUPPORTS_1024HZ
2606 default 100 if HZ_100
2607 default 128 if HZ_128
2608 default 250 if HZ_250
2609 default 256 if HZ_256
2610 default 1000 if HZ_1000
2611 default 1024 if HZ_1024
2614 def_bool HIGH_RES_TIMERS
2616 source "kernel/Kconfig.preempt"
2619 bool "Kexec system call"
2622 kexec is a system call that implements the ability to shutdown your
2623 current kernel, and to start another kernel. It is like a reboot
2624 but it is independent of the system firmware. And like a reboot
2625 you can start any kernel with it, not just Linux.
2627 The name comes from the similarity to the exec system call.
2629 It is an ongoing process to be certain the hardware in a machine
2630 is properly shutdown, so do not be surprised if this code does not
2631 initially work for you. As of this writing the exact hardware
2632 interface is strongly in flux, so no good recommendation can be
2636 bool "Kernel crash dumps"
2638 Generate crash dump after being started by kexec.
2639 This should be normally only set in special crash dump kernels
2640 which are loaded in the main kernel with kexec-tools into
2641 a specially reserved region and then later executed after
2642 a crash by kdump/kexec. The crash dump kernel must be compiled
2643 to a memory address not used by the main kernel or firmware using
2646 config PHYSICAL_START
2647 hex "Physical address where the kernel is loaded"
2648 default "0xffffffff84000000" if 64BIT
2649 default "0x84000000" if 32BIT
2650 depends on CRASH_DUMP
2652 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2653 If you plan to use kernel for capturing the crash dump change
2654 this value to start of the reserved region (the "X" value as
2655 specified in the "crashkernel=YM@XM" command line boot parameter
2656 passed to the panic-ed kernel).
2659 bool "Enable seccomp to safely compute untrusted bytecode"
2663 This kernel feature is useful for number crunching applications
2664 that may need to compute untrusted bytecode during their
2665 execution. By using pipes or other transports made available to
2666 the process as file descriptors supporting the read/write
2667 syscalls, it's possible to isolate those applications in
2668 their own address space using seccomp. Once seccomp is
2669 enabled via /proc/<pid>/seccomp, it cannot be disabled
2670 and the task is only allowed to execute a few safe syscalls
2671 defined by each seccomp mode.
2673 If unsure, say Y. Only embedded should say N here.
2675 config MIPS_O32_FP64_SUPPORT
2676 bool "Support for O32 binaries using 64-bit FP"
2677 depends on 32BIT || MIPS32_O32
2679 When this is enabled, the kernel will support use of 64-bit floating
2680 point registers with binaries using the O32 ABI along with the
2681 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2682 32-bit MIPS systems this support is at the cost of increasing the
2683 size and complexity of the compiled FPU emulator. Thus if you are
2684 running a MIPS32 system and know that none of your userland binaries
2685 will require 64-bit floating point, you may wish to reduce the size
2686 of your kernel & potentially improve FP emulation performance by
2689 Although binutils currently supports use of this flag the details
2690 concerning its effect upon the O32 ABI in userland are still being
2691 worked on. In order to avoid userland becoming dependant upon current
2692 behaviour before the details have been finalised, this option should
2693 be considered experimental and only enabled by those working upon
2701 select OF_EARLY_FLATTREE
2708 prompt "Kernel appended dtb support" if USE_OF
2709 default MIPS_NO_APPENDED_DTB
2711 config MIPS_NO_APPENDED_DTB
2714 Do not enable appended dtb support.
2716 config MIPS_RAW_APPENDED_DTB
2719 With this option, the boot code will look for a device tree binary
2720 DTB) appended to raw vmlinux.bin (without decompressor).
2721 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2723 This is meant as a backward compatibility convenience for those
2724 systems with a bootloader that can't be upgraded to accommodate
2725 the documented boot protocol using a device tree.
2727 Beware that there is very little in terms of protection against
2728 this option being confused by leftover garbage in memory that might
2729 look like a DTB header after a reboot if no actual DTB is appended
2730 to vmlinux.bin. Do not leave this option active in a production kernel
2731 if you don't intend to always append a DTB.
2733 config MIPS_ZBOOT_APPENDED_DTB
2735 depends on SYS_SUPPORTS_ZBOOT
2737 With this option, the boot code will look for a device tree binary
2738 DTB) appended to raw vmlinuz.bin (with decompressor).
2739 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2741 This is meant as a backward compatibility convenience for those
2742 systems with a bootloader that can't be upgraded to accommodate
2743 the documented boot protocol using a device tree.
2745 Beware that there is very little in terms of protection against
2746 this option being confused by leftover garbage in memory that might
2747 look like a DTB header after a reboot if no actual DTB is appended
2748 to vmlinuz.bin. Do not leave this option active in a production kernel
2749 if you don't intend to always append a DTB.
2753 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2754 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2755 !MIPS_MALTA && !MIPS_SEAD3 && \
2757 default MIPS_CMDLINE_FROM_BOOTLOADER
2759 config MIPS_CMDLINE_FROM_DTB
2761 bool "Dtb kernel arguments if available"
2763 config MIPS_CMDLINE_DTB_EXTEND
2765 bool "Extend dtb kernel arguments with bootloader arguments"
2767 config MIPS_CMDLINE_FROM_BOOTLOADER
2768 bool "Bootloader kernel arguments if available"
2773 config LOCKDEP_SUPPORT
2777 config STACKTRACE_SUPPORT
2781 config HAVE_LATENCYTOP_SUPPORT
2785 config PGTABLE_LEVELS
2787 default 3 if 64BIT && !PAGE_SIZE_64KB
2790 source "init/Kconfig"
2792 source "kernel/Kconfig.freezer"
2794 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2802 bool "Support for PCI controller"
2803 depends on HW_HAS_PCI
2805 select NO_GENERIC_PCI_IOPORT_MAP
2807 Find out whether you have a PCI motherboard. PCI is the name of a
2808 bus system, i.e. the way the CPU talks to the other stuff inside
2809 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2813 bool "Support for HT-linked PCI"
2815 depends on CPU_LOONGSON3
2819 Loongson family machines use Hyper-Transport bus for inter-core
2820 connection and device connection. The PCI bus is a subordinate
2821 linked at HT. Choose Y for Loongson-3 based machines.
2826 source "drivers/pci/Kconfig"
2828 source "drivers/pci/pcie/Kconfig"
2831 # ISA support is now enabled via select. Too many systems still have the one
2832 # or other ISA chip on the board that users don't know about so don't expect
2833 # users to choose the right thing ...
2840 depends on HW_HAS_EISA
2842 select GENERIC_ISA_DMA
2844 The Extended Industry Standard Architecture (EISA) bus was
2845 developed as an open alternative to the IBM MicroChannel bus.
2847 The EISA bus provided some of the features of the IBM MicroChannel
2848 bus while maintaining backward compatibility with cards made for
2849 the older ISA bus. The EISA bus saw limited use between 1988 and
2850 1995 when it was made obsolete by the PCI bus.
2852 Say Y here if you are building a kernel for an EISA-based machine.
2856 source "drivers/eisa/Kconfig"
2859 bool "TURBOchannel support"
2860 depends on MACH_DECSTATION
2862 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2863 processors. TURBOchannel programming specifications are available
2865 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2867 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2868 Linux driver support status is documented at:
2869 <http://www.linux-mips.org/wiki/DECstation>
2879 select MIPS_EXTERNAL_TIMER
2887 source "drivers/pcmcia/Kconfig"
2889 source "drivers/pci/hotplug/Kconfig"
2892 tristate "RapidIO support"
2896 If you say Y here, the kernel will include drivers and
2897 infrastructure code to support RapidIO interconnect devices.
2899 source "drivers/rapidio/Kconfig"
2903 menu "Executable file formats"
2905 source "fs/Kconfig.binfmt"
2910 config MIPS32_COMPAT
2916 config SYSVIPC_COMPAT
2920 bool "Kernel support for o32 binaries"
2922 select ARCH_WANT_OLD_COMPAT_IPC
2924 select MIPS32_COMPAT
2925 select SYSVIPC_COMPAT if SYSVIPC
2927 Select this option if you want to run o32 binaries. These are pure
2928 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2929 existing binaries are in this format.
2934 bool "Kernel support for n32 binaries"
2937 select MIPS32_COMPAT
2938 select SYSVIPC_COMPAT if SYSVIPC
2940 Select this option if you want to run n32 binaries. These are
2941 64-bit binaries using 32-bit quantities for addressing and certain
2942 data that would normally be 64-bit. They are used in special
2949 default y if MIPS32_O32 || MIPS32_N32
2953 menu "Power management options"
2955 config ARCH_HIBERNATION_POSSIBLE
2957 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2959 config ARCH_SUSPEND_POSSIBLE
2961 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2963 source "kernel/power/Kconfig"
2967 config MIPS_EXTERNAL_TIMER
2970 menu "CPU Power Management"
2972 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2973 source "drivers/cpufreq/Kconfig"
2976 source "drivers/cpuidle/Kconfig"
2980 source "net/Kconfig"
2982 source "drivers/Kconfig"
2984 source "drivers/firmware/Kconfig"
2988 source "arch/mips/Kconfig.debug"
2990 source "security/Kconfig"
2992 source "crypto/Kconfig"
2994 source "lib/Kconfig"
2996 source "arch/mips/kvm/Kconfig"