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
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
63 select GENERIC_TIME_VSYSCALL
64 select ARCH_CLOCKSOURCE_DATA
66 menu "Machine selection"
73 bool "Alchemy processor based machines"
74 select ARCH_PHYS_ADDR_T_64BIT
78 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
79 select SYS_HAS_CPU_MIPS32_R1
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_APM_EMULATION
82 select ARCH_REQUIRE_GPIOLIB
83 select SYS_SUPPORTS_ZBOOT
87 bool "Texas Instruments AR7"
89 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_MIPS32_R1
96 select SYS_HAS_EARLY_PRINTK
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SYS_SUPPORTS_MIPS16
100 select SYS_SUPPORTS_ZBOOT_UART16550
101 select ARCH_REQUIRE_GPIOLIB
105 Support for the Texas Instruments AR7 System-on-a-Chip
106 family: TNETD7100, 7200 and 7300.
109 bool "Atheros AR231x/AR531x SoC support"
112 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_HAS_EARLY_PRINTK
120 Support for Atheros AR231x and Atheros AR531x based boards
123 bool "Atheros AR71XX/AR724X/AR913X based boards"
124 select ARCH_HAS_RESET_CONTROLLER
125 select ARCH_REQUIRE_GPIOLIB
129 select DMA_NONCOHERENT
135 select SYS_HAS_CPU_MIPS32_R2
136 select SYS_HAS_EARLY_PRINTK
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_BIG_ENDIAN
139 select SYS_SUPPORTS_MIPS16
140 select SYS_SUPPORTS_ZBOOT
143 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
146 bool "Broadcom Generic BMIPS kernel"
148 select NO_EXCEPT_FILL
154 select BCM6345_L1_IRQ
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
173 select ARCH_WANT_OPTIONAL_GPIOLIB
175 Build a generic DT-based kernel image that boots on select
176 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
177 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
178 must be set appropriately for your board.
181 bool "Broadcom BCM47XX based boards"
182 select ARCH_WANT_OPTIONAL_GPIOLIB
186 select DMA_NONCOHERENT
189 select SYS_HAS_CPU_MIPS32_R1
190 select NO_EXCEPT_FILL
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_SUPPORTS_LITTLE_ENDIAN
193 select SYS_SUPPORTS_MIPS16
194 select SYS_HAS_EARLY_PRINTK
195 select USE_GENERIC_EARLY_PRINTK_8250
197 select LEDS_GPIO_REGISTER
200 Support for BCM47XX based boards
203 bool "Broadcom BCM63XX based boards"
208 select DMA_NONCOHERENT
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_BIG_ENDIAN
212 select SYS_HAS_EARLY_PRINTK
214 select ARCH_REQUIRE_GPIOLIB
216 select MIPS_L1_CACHE_SHIFT_4
218 Support for BCM63XX based boards
225 select DMA_NONCOHERENT
231 select PCI_GT64XXX_PCI0
233 select SYS_HAS_CPU_NEVADA
234 select SYS_HAS_EARLY_PRINTK
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_64BIT_KERNEL
237 select SYS_SUPPORTS_LITTLE_ENDIAN
238 select USE_GENERIC_EARLY_PRINTK_8250
240 config MACH_DECSTATION
244 select CEVT_R4K if CPU_R4X00
246 select CSRC_R4K if CPU_R4X00
247 select CPU_DADDI_WORKAROUNDS if 64BIT
248 select CPU_R4000_WORKAROUNDS if 64BIT
249 select CPU_R4400_WORKAROUNDS if 64BIT
250 select DMA_NONCOHERENT
253 select SYS_HAS_CPU_R3000
254 select SYS_HAS_CPU_R4X00
255 select SYS_SUPPORTS_32BIT_KERNEL
256 select SYS_SUPPORTS_64BIT_KERNEL
257 select SYS_SUPPORTS_LITTLE_ENDIAN
258 select SYS_SUPPORTS_128HZ
259 select SYS_SUPPORTS_256HZ
260 select SYS_SUPPORTS_1024HZ
261 select MIPS_L1_CACHE_SHIFT_4
263 This enables support for DEC's MIPS based workstations. For details
264 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
265 DECstation porting pages on <http://decstation.unix-ag.org/>.
267 If you have one of the following DECstation Models you definitely
268 want to choose R4xx0 for the CPU Type:
275 otherwise choose R3000.
278 bool "Jazz family of machines"
281 select ARCH_MAY_HAVE_PC_FDC
284 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
285 select GENERIC_ISA_DMA
286 select HAVE_PCSPKR_PLATFORM
291 select SYS_HAS_CPU_R4X00
292 select SYS_SUPPORTS_32BIT_KERNEL
293 select SYS_SUPPORTS_64BIT_KERNEL
294 select SYS_SUPPORTS_100HZ
296 This a family of machines based on the MIPS R4030 chipset which was
297 used by several vendors to build RISC/os and Windows NT workstations.
298 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
299 Olivetti M700-10 workstations.
302 bool "Ingenic SoC based machines"
303 select SYS_SUPPORTS_32BIT_KERNEL
304 select SYS_SUPPORTS_LITTLE_ENDIAN
305 select SYS_SUPPORTS_ZBOOT_UART16550
306 select DMA_NONCOHERENT
308 select ARCH_REQUIRE_GPIOLIB
310 select GENERIC_IRQ_CHIP
316 bool "Lantiq based platforms"
317 select DMA_NONCOHERENT
321 select SYS_HAS_CPU_MIPS32_R1
322 select SYS_HAS_CPU_MIPS32_R2
323 select SYS_SUPPORTS_BIG_ENDIAN
324 select SYS_SUPPORTS_32BIT_KERNEL
325 select SYS_SUPPORTS_MIPS16
326 select SYS_SUPPORTS_MULTITHREADING
327 select SYS_HAS_EARLY_PRINTK
328 select ARCH_REQUIRE_GPIOLIB
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 "MIPSfpga Xilinx based boards"
409 select ARCH_REQUIRE_GPIOLIB
418 select MIPS_CPU_SCACHE
419 select SYS_HAS_EARLY_PRINTK
420 select SYS_HAS_CPU_MIPS32_R2
421 select SYS_SUPPORTS_32BIT_KERNEL
422 select SYS_SUPPORTS_LITTLE_ENDIAN
423 select SYS_SUPPORTS_ZBOOT_UART16550
425 select USE_GENERIC_EARLY_PRINTK_8250
427 This enables support for the IMG University Program MIPSfpga platform.
430 bool "MIPS Malta board"
431 select ARCH_MAY_HAVE_PC_FDC
437 select CLKSRC_MIPS_GIC
439 select DMA_MAYBE_COHERENT
440 select GENERIC_ISA_DMA
441 select HAVE_PCSPKR_PLATFORM
448 select MIPS_CPU_SCACHE
449 select MIPS_L1_CACHE_SHIFT_6
450 select PCI_GT64XXX_PCI0
454 select SYS_HAS_CPU_MIPS32_R1
455 select SYS_HAS_CPU_MIPS32_R2
456 select SYS_HAS_CPU_MIPS32_R3_5
457 select SYS_HAS_CPU_MIPS32_R5
458 select SYS_HAS_CPU_MIPS32_R6
459 select SYS_HAS_CPU_MIPS64_R1
460 select SYS_HAS_CPU_MIPS64_R2
461 select SYS_HAS_CPU_MIPS64_R6
462 select SYS_HAS_CPU_NEVADA
463 select SYS_HAS_CPU_RM7000
464 select SYS_SUPPORTS_32BIT_KERNEL
465 select SYS_SUPPORTS_64BIT_KERNEL
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_HIGHMEM
468 select SYS_SUPPORTS_LITTLE_ENDIAN
469 select SYS_SUPPORTS_MICROMIPS
470 select SYS_SUPPORTS_MIPS_CMP
471 select SYS_SUPPORTS_MIPS_CPS
472 select SYS_SUPPORTS_MIPS16
473 select SYS_SUPPORTS_MULTITHREADING
474 select SYS_SUPPORTS_SMARTMIPS
475 select SYS_SUPPORTS_ZBOOT
477 select ZONE_DMA32 if 64BIT
481 This enables support for the MIPS Technologies Malta evaluation
485 bool "Microchip PIC32 Family"
487 This enables support for the Microchip PIC32 family of platforms.
489 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
493 bool "MIPS SEAD3 board"
499 select CLKSRC_MIPS_GIC
501 select CPU_MIPSR2_IRQ_VI
502 select CPU_MIPSR2_IRQ_EI
503 select DMA_NONCOHERENT
508 select SYS_HAS_CPU_MIPS32_R1
509 select SYS_HAS_CPU_MIPS32_R2
510 select SYS_HAS_CPU_MIPS64_R1
511 select SYS_HAS_EARLY_PRINTK
512 select SYS_SUPPORTS_32BIT_KERNEL
513 select SYS_SUPPORTS_64BIT_KERNEL
514 select SYS_SUPPORTS_BIG_ENDIAN
515 select SYS_SUPPORTS_LITTLE_ENDIAN
516 select SYS_SUPPORTS_SMARTMIPS
517 select SYS_SUPPORTS_MICROMIPS
518 select SYS_SUPPORTS_MIPS16
519 select USB_EHCI_BIG_ENDIAN_DESC
520 select USB_EHCI_BIG_ENDIAN_MMIO
523 This enables support for the MIPS Technologies SEAD3 evaluation
527 bool "NEC EMMA2RH Mark-eins board"
531 This enables support for the NEC Electronics Mark-eins boards.
534 bool "NEC VR4100 series based machines"
537 select SYS_HAS_CPU_VR41XX
538 select SYS_SUPPORTS_MIPS16
539 select ARCH_REQUIRE_GPIOLIB
542 bool "NXP STB220 board"
545 Support for NXP Semiconductors STB220 Development Board.
552 Support for NXP Semiconductors STB225 Development Board.
555 bool "PMC-Sierra MSP chipsets"
558 select DMA_NONCOHERENT
560 select NO_EXCEPT_FILL
562 select SYS_HAS_CPU_MIPS32_R1
563 select SYS_HAS_CPU_MIPS32_R2
564 select SYS_SUPPORTS_32BIT_KERNEL
565 select SYS_SUPPORTS_BIG_ENDIAN
566 select SYS_SUPPORTS_MIPS16
569 select SERIAL_8250_CONSOLE
570 select USB_EHCI_BIG_ENDIAN_MMIO
571 select USB_EHCI_BIG_ENDIAN_DESC
573 This adds support for the PMC-Sierra family of Multi-Service
574 Processor System-On-A-Chips. These parts include a number
575 of integrated peripherals, interfaces and DSPs in addition to
576 a variety of MIPS cores.
579 bool "Ralink based machines"
583 select DMA_NONCOHERENT
586 select SYS_HAS_CPU_MIPS32_R1
587 select SYS_HAS_CPU_MIPS32_R2
588 select SYS_SUPPORTS_32BIT_KERNEL
589 select SYS_SUPPORTS_LITTLE_ENDIAN
590 select SYS_SUPPORTS_MIPS16
591 select SYS_HAS_EARLY_PRINTK
593 select ARCH_HAS_RESET_CONTROLLER
594 select RESET_CONTROLLER
597 bool "SGI IP22 (Indy/Indigo2)"
603 select DEFAULT_SGI_PARTITION
604 select DMA_NONCOHERENT
608 select IP22_CPU_SCACHE
610 select GENERIC_ISA_DMA_SUPPORT_BROKEN
612 select SGI_HAS_INDYDOG
618 select SYS_HAS_CPU_R4X00
619 select SYS_HAS_CPU_R5000
621 # Disable EARLY_PRINTK for now since it leads to overwritten prom
622 # memory during early boot on some machines.
624 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
625 # for a more details discussion
627 # select SYS_HAS_EARLY_PRINTK
628 select SYS_SUPPORTS_32BIT_KERNEL
629 select SYS_SUPPORTS_64BIT_KERNEL
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select MIPS_L1_CACHE_SHIFT_7
633 This are the SGI Indy, Challenge S and Indigo2, as well as certain
634 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
635 that runs on these, say Y here.
638 bool "SGI IP27 (Origin200/2000)"
642 select DEFAULT_SGI_PARTITION
644 select SYS_HAS_EARLY_PRINTK
646 select NR_CPUS_DEFAULT_64
647 select SYS_HAS_CPU_R10000
648 select SYS_SUPPORTS_64BIT_KERNEL
649 select SYS_SUPPORTS_BIG_ENDIAN
650 select SYS_SUPPORTS_NUMA
651 select SYS_SUPPORTS_SMP
652 select MIPS_L1_CACHE_SHIFT_7
654 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
655 workstations. To compile a Linux kernel that runs on these, say Y
659 bool "SGI IP28 (Indigo2 R10k)"
665 select DEFAULT_SGI_PARTITION
666 select DMA_NONCOHERENT
667 select GENERIC_ISA_DMA_SUPPORT_BROKEN
673 select SGI_HAS_INDYDOG
679 select SYS_HAS_CPU_R10000
681 # Disable EARLY_PRINTK for now since it leads to overwritten prom
682 # memory during early boot on some machines.
684 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
685 # for a more details discussion
687 # select SYS_HAS_EARLY_PRINTK
688 select SYS_SUPPORTS_64BIT_KERNEL
689 select SYS_SUPPORTS_BIG_ENDIAN
690 select MIPS_L1_CACHE_SHIFT_7
692 This is the SGI Indigo2 with R10000 processor. To compile a Linux
693 kernel that runs on these, say Y here.
702 select DMA_NONCOHERENT
705 select R5000_CPU_SCACHE
706 select RM7000_CPU_SCACHE
707 select SYS_HAS_CPU_R5000
708 select SYS_HAS_CPU_R10000 if BROKEN
709 select SYS_HAS_CPU_RM7000
710 select SYS_HAS_CPU_NEVADA
711 select SYS_SUPPORTS_64BIT_KERNEL
712 select SYS_SUPPORTS_BIG_ENDIAN
714 If you want this kernel to run on SGI O2 workstation, say Y here.
717 bool "Sibyte BCM91120C-CRhine"
720 select SIBYTE_BCM1120
722 select SYS_HAS_CPU_SB1
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_LITTLE_ENDIAN
727 bool "Sibyte BCM91120x-Carmel"
730 select SIBYTE_BCM1120
732 select SYS_HAS_CPU_SB1
733 select SYS_SUPPORTS_BIG_ENDIAN
734 select SYS_SUPPORTS_LITTLE_ENDIAN
737 bool "Sibyte BCM91125C-CRhone"
740 select SIBYTE_BCM1125
742 select SYS_HAS_CPU_SB1
743 select SYS_SUPPORTS_BIG_ENDIAN
744 select SYS_SUPPORTS_HIGHMEM
745 select SYS_SUPPORTS_LITTLE_ENDIAN
748 bool "Sibyte BCM91125E-Rhone"
751 select SIBYTE_BCM1125H
753 select SYS_HAS_CPU_SB1
754 select SYS_SUPPORTS_BIG_ENDIAN
755 select SYS_SUPPORTS_LITTLE_ENDIAN
758 bool "Sibyte BCM91250A-SWARM"
761 select HAVE_PATA_PLATFORM
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_HIGHMEM
767 select SYS_SUPPORTS_LITTLE_ENDIAN
768 select ZONE_DMA32 if 64BIT
770 config SIBYTE_LITTLESUR
771 bool "Sibyte BCM91250C2-LittleSur"
774 select HAVE_PATA_PLATFORM
777 select SYS_HAS_CPU_SB1
778 select SYS_SUPPORTS_BIG_ENDIAN
779 select SYS_SUPPORTS_HIGHMEM
780 select SYS_SUPPORTS_LITTLE_ENDIAN
782 config SIBYTE_SENTOSA
783 bool "Sibyte BCM91250E-Sentosa"
788 select SYS_HAS_CPU_SB1
789 select SYS_SUPPORTS_BIG_ENDIAN
790 select SYS_SUPPORTS_LITTLE_ENDIAN
793 bool "Sibyte BCM91480B-BigSur"
796 select NR_CPUS_DEFAULT_4
797 select SIBYTE_BCM1x80
799 select SYS_HAS_CPU_SB1
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_HIGHMEM
802 select SYS_SUPPORTS_LITTLE_ENDIAN
803 select ZONE_DMA32 if 64BIT
806 bool "SNI RM200/300/400"
807 select FW_ARC if CPU_LITTLE_ENDIAN
808 select FW_ARC32 if CPU_LITTLE_ENDIAN
809 select FW_SNIPROM if CPU_BIG_ENDIAN
810 select ARCH_MAY_HAVE_PC_FDC
814 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
815 select DMA_NONCOHERENT
816 select GENERIC_ISA_DMA
817 select HAVE_PCSPKR_PLATFORM
824 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
825 select SYS_HAS_CPU_R4X00
826 select SYS_HAS_CPU_R5000
827 select SYS_HAS_CPU_R10000
828 select R5000_CPU_SCACHE
829 select SYS_HAS_EARLY_PRINTK
830 select SYS_SUPPORTS_32BIT_KERNEL
831 select SYS_SUPPORTS_64BIT_KERNEL
832 select SYS_SUPPORTS_BIG_ENDIAN
833 select SYS_SUPPORTS_HIGHMEM
834 select SYS_SUPPORTS_LITTLE_ENDIAN
836 The SNI RM200/300/400 are MIPS-based machines manufactured by
837 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
838 Technology and now in turn merged with Fujitsu. Say Y here to
839 support this machine type.
842 bool "Toshiba TX39 series based machines"
845 bool "Toshiba TX49 series based machines"
847 config MIKROTIK_RB532
848 bool "Mikrotik RB532 boards"
851 select DMA_NONCOHERENT
854 select SYS_HAS_CPU_MIPS32_R1
855 select SYS_SUPPORTS_32BIT_KERNEL
856 select SYS_SUPPORTS_LITTLE_ENDIAN
859 select ARCH_REQUIRE_GPIOLIB
860 select MIPS_L1_CACHE_SHIFT_4
862 Support the Mikrotik(tm) RouterBoard 532 series,
863 based on the IDT RC32434 SoC.
865 config CAVIUM_OCTEON_SOC
866 bool "Cavium Networks Octeon SoC based boards"
868 select ARCH_PHYS_ADDR_T_64BIT
870 select SYS_SUPPORTS_64BIT_KERNEL
871 select SYS_SUPPORTS_BIG_ENDIAN
873 select EDAC_ATOMIC_SCRUB
874 select SYS_SUPPORTS_LITTLE_ENDIAN
875 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
876 select SYS_HAS_EARLY_PRINTK
877 select SYS_HAS_CPU_CAVIUM_OCTEON
882 select ARCH_REQUIRE_GPIOLIB
885 select ARCH_SPARSEMEM_ENABLE
886 select SYS_SUPPORTS_SMP
887 select NR_CPUS_DEFAULT_16
889 select MTD_COMPLEX_MAPPINGS
891 This option supports all of the Octeon reference boards from Cavium
892 Networks. It builds a kernel that dynamically determines the Octeon
893 CPU type and supports all known board reference implementations.
894 Some of the supported boards are:
901 Say Y here for most Octeon reference boards.
904 bool "Netlogic XLR/XLS based systems"
907 select SYS_HAS_CPU_XLR
908 select SYS_SUPPORTS_SMP
911 select SYS_SUPPORTS_32BIT_KERNEL
912 select SYS_SUPPORTS_64BIT_KERNEL
913 select ARCH_PHYS_ADDR_T_64BIT
914 select SYS_SUPPORTS_BIG_ENDIAN
915 select SYS_SUPPORTS_HIGHMEM
917 select NR_CPUS_DEFAULT_32
921 select ZONE_DMA32 if 64BIT
923 select SYS_HAS_EARLY_PRINTK
924 select SYS_SUPPORTS_ZBOOT
925 select SYS_SUPPORTS_ZBOOT_UART16550
927 Support for systems based on Netlogic XLR and XLS processors.
928 Say Y here if you have a XLR or XLS based board.
931 bool "Netlogic XLP based systems"
934 select SYS_HAS_CPU_XLP
935 select SYS_SUPPORTS_SMP
937 select SYS_SUPPORTS_32BIT_KERNEL
938 select SYS_SUPPORTS_64BIT_KERNEL
939 select ARCH_PHYS_ADDR_T_64BIT
940 select ARCH_REQUIRE_GPIOLIB
941 select SYS_SUPPORTS_BIG_ENDIAN
942 select SYS_SUPPORTS_LITTLE_ENDIAN
943 select SYS_SUPPORTS_HIGHMEM
945 select NR_CPUS_DEFAULT_32
949 select ZONE_DMA32 if 64BIT
951 select SYS_HAS_EARLY_PRINTK
953 select SYS_SUPPORTS_ZBOOT
954 select SYS_SUPPORTS_ZBOOT_UART16550
956 This board is based on Netlogic XLP Processor.
957 Say Y here if you have a XLP based board.
960 bool "Para-Virtualized guest system"
964 select SYS_SUPPORTS_64BIT_KERNEL
965 select SYS_SUPPORTS_32BIT_KERNEL
966 select SYS_SUPPORTS_BIG_ENDIAN
967 select SYS_SUPPORTS_SMP
968 select NR_CPUS_DEFAULT_4
969 select SYS_HAS_EARLY_PRINTK
970 select SYS_HAS_CPU_MIPS32_R2
971 select SYS_HAS_CPU_MIPS64_R2
972 select SYS_HAS_CPU_CAVIUM_OCTEON
976 This option supports guest running under ????
980 source "arch/mips/alchemy/Kconfig"
981 source "arch/mips/ath25/Kconfig"
982 source "arch/mips/ath79/Kconfig"
983 source "arch/mips/bcm47xx/Kconfig"
984 source "arch/mips/bcm63xx/Kconfig"
985 source "arch/mips/bmips/Kconfig"
986 source "arch/mips/jazz/Kconfig"
987 source "arch/mips/jz4740/Kconfig"
988 source "arch/mips/lantiq/Kconfig"
989 source "arch/mips/lasat/Kconfig"
990 source "arch/mips/pic32/Kconfig"
991 source "arch/mips/pistachio/Kconfig"
992 source "arch/mips/pmcs-msp71xx/Kconfig"
993 source "arch/mips/ralink/Kconfig"
994 source "arch/mips/sgi-ip27/Kconfig"
995 source "arch/mips/sibyte/Kconfig"
996 source "arch/mips/txx9/Kconfig"
997 source "arch/mips/vr41xx/Kconfig"
998 source "arch/mips/cavium-octeon/Kconfig"
999 source "arch/mips/loongson32/Kconfig"
1000 source "arch/mips/loongson64/Kconfig"
1001 source "arch/mips/netlogic/Kconfig"
1002 source "arch/mips/paravirt/Kconfig"
1003 source "arch/mips/xilfpga/Kconfig"
1007 config RWSEM_GENERIC_SPINLOCK
1011 config RWSEM_XCHGADD_ALGORITHM
1014 config ARCH_HAS_ILOG2_U32
1018 config ARCH_HAS_ILOG2_U64
1022 config GENERIC_HWEIGHT
1026 config GENERIC_CALIBRATE_DELAY
1030 config SCHED_OMIT_FRAME_POINTER
1035 # Select some configuration options automatically based on user selections.
1040 config ARCH_MAY_HAVE_PC_FDC
1076 config MIPS_CLOCK_VSYSCALL
1077 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1080 select ARCH_REQUIRE_GPIOLIB
1086 config ARCH_DMA_ADDR_T_64BIT
1087 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1089 config ARCH_SUPPORTS_UPROBES
1092 config DMA_MAYBE_COHERENT
1093 select DMA_NONCOHERENT
1099 config DMA_NONCOHERENT
1101 select NEED_DMA_MAP_STATE
1103 config NEED_DMA_MAP_STATE
1106 config SYS_HAS_EARLY_PRINTK
1110 bool "Support for hot-pluggable CPUs"
1111 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1113 Say Y here to allow turning CPUs off and on. CPUs can be
1114 controlled through /sys/devices/system/cpu.
1115 (Note: power management support will enable this option
1116 automatically on SMP systems. )
1117 Say N if you want to disable CPU hotplug.
1119 config SYS_SUPPORTS_HOTPLUG_CPU
1122 config MIPS_BONITO64
1137 config NO_IOPORT_MAP
1143 config GENERIC_ISA_DMA
1145 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1148 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1150 select GENERIC_ISA_DMA
1155 config HOLES_IN_ZONE
1159 # Endianness selection. Sufficiently obscure so many users don't know what to
1160 # answer,so we try hard to limit the available choices. Also the use of a
1161 # choice statement should be more obvious to the user.
1164 prompt "Endianness selection"
1166 Some MIPS machines can be configured for either little or big endian
1167 byte order. These modes require different kernels and a different
1168 Linux distribution. In general there is one preferred byteorder for a
1169 particular system but some systems are just as commonly used in the
1170 one or the other endianness.
1172 config CPU_BIG_ENDIAN
1174 depends on SYS_SUPPORTS_BIG_ENDIAN
1176 config CPU_LITTLE_ENDIAN
1177 bool "Little endian"
1178 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1185 config SYS_SUPPORTS_APM_EMULATION
1188 config SYS_SUPPORTS_BIG_ENDIAN
1191 config SYS_SUPPORTS_LITTLE_ENDIAN
1194 config SYS_SUPPORTS_HUGETLBFS
1196 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1199 config MIPS_HUGE_TLB_SUPPORT
1200 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1217 config PCI_GT64XXX_PCI0
1220 config NO_EXCEPT_FILL
1227 select DMA_NONCOHERENT
1229 select SWAP_IO_SPACE
1230 select SYS_HAS_CPU_R5500
1231 select SYS_SUPPORTS_32BIT_KERNEL
1232 select SYS_SUPPORTS_64BIT_KERNEL
1233 select SYS_SUPPORTS_BIG_ENDIAN
1240 select DMA_NONCOHERENT
1241 select SYS_HAS_CPU_MIPS32_R2
1242 select SYS_SUPPORTS_32BIT_KERNEL
1243 select SYS_SUPPORTS_LITTLE_ENDIAN
1244 select SYS_SUPPORTS_BIG_ENDIAN
1245 select SYS_SUPPORTS_MIPS16
1246 select CPU_MIPSR2_IRQ_VI
1255 config SWAP_IO_SPACE
1258 config SGI_HAS_INDYDOG
1270 config SGI_HAS_ZILOG
1273 config SGI_HAS_I8042
1276 config DEFAULT_SGI_PARTITION
1288 config MIPS_L1_CACHE_SHIFT_4
1291 config MIPS_L1_CACHE_SHIFT_5
1294 config MIPS_L1_CACHE_SHIFT_6
1297 config MIPS_L1_CACHE_SHIFT_7
1300 config MIPS_L1_CACHE_SHIFT
1302 default "7" if MIPS_L1_CACHE_SHIFT_7
1303 default "6" if MIPS_L1_CACHE_SHIFT_6
1304 default "5" if MIPS_L1_CACHE_SHIFT_5
1305 default "4" if MIPS_L1_CACHE_SHIFT_4
1308 config HAVE_STD_PC_SERIAL_PORT
1312 bool "ARC console support"
1313 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1317 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1322 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1331 menu "CPU selection"
1337 config CPU_LOONGSON3
1338 bool "Loongson 3 CPU"
1339 depends on SYS_HAS_CPU_LOONGSON3
1340 select CPU_SUPPORTS_64BIT_KERNEL
1341 select CPU_SUPPORTS_HIGHMEM
1342 select CPU_SUPPORTS_HUGEPAGES
1343 select WEAK_ORDERING
1344 select WEAK_REORDERING_BEYOND_LLSC
1345 select ARCH_REQUIRE_GPIOLIB
1347 The Loongson 3 processor implements the MIPS64R2 instruction
1348 set with many extensions.
1350 config CPU_LOONGSON2E
1352 depends on SYS_HAS_CPU_LOONGSON2E
1353 select CPU_LOONGSON2
1355 The Loongson 2E processor implements the MIPS III instruction set
1356 with many extensions.
1358 It has an internal FPGA northbridge, which is compatible to
1361 config CPU_LOONGSON2F
1363 depends on SYS_HAS_CPU_LOONGSON2F
1364 select CPU_LOONGSON2
1365 select ARCH_REQUIRE_GPIOLIB
1367 The Loongson 2F processor implements the MIPS III instruction set
1368 with many extensions.
1370 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1371 have a similar programming interface with FPGA northbridge used in
1374 config CPU_LOONGSON1B
1376 depends on SYS_HAS_CPU_LOONGSON1B
1377 select CPU_LOONGSON1
1379 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1380 release 2 instruction set.
1382 config CPU_MIPS32_R1
1383 bool "MIPS32 Release 1"
1384 depends on SYS_HAS_CPU_MIPS32_R1
1385 select CPU_HAS_PREFETCH
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select CPU_SUPPORTS_HIGHMEM
1389 Choose this option to build a kernel for release 1 or later of the
1390 MIPS32 architecture. Most modern embedded systems with a 32-bit
1391 MIPS processor are based on a MIPS32 processor. If you know the
1392 specific type of processor in your system, choose those that one
1393 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1394 Release 2 of the MIPS32 architecture is available since several
1395 years so chances are you even have a MIPS32 Release 2 processor
1396 in which case you should choose CPU_MIPS32_R2 instead for better
1399 config CPU_MIPS32_R2
1400 bool "MIPS32 Release 2"
1401 depends on SYS_HAS_CPU_MIPS32_R2
1402 select CPU_HAS_PREFETCH
1403 select CPU_SUPPORTS_32BIT_KERNEL
1404 select CPU_SUPPORTS_HIGHMEM
1405 select CPU_SUPPORTS_MSA
1408 Choose this option to build a kernel for release 2 or later of the
1409 MIPS32 architecture. Most modern embedded systems with a 32-bit
1410 MIPS processor are based on a MIPS32 processor. If you know the
1411 specific type of processor in your system, choose those that one
1412 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1414 config CPU_MIPS32_R6
1415 bool "MIPS32 Release 6"
1416 depends on SYS_HAS_CPU_MIPS32_R6
1417 select CPU_HAS_PREFETCH
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_HIGHMEM
1420 select CPU_SUPPORTS_MSA
1423 select MIPS_O32_FP64_SUPPORT
1425 Choose this option to build a kernel for release 6 or later of the
1426 MIPS32 architecture. New MIPS processors, starting with the Warrior
1427 family, are based on a MIPS32r6 processor. If you own an older
1428 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1430 config CPU_MIPS64_R1
1431 bool "MIPS64 Release 1"
1432 depends on SYS_HAS_CPU_MIPS64_R1
1433 select CPU_HAS_PREFETCH
1434 select CPU_SUPPORTS_32BIT_KERNEL
1435 select CPU_SUPPORTS_64BIT_KERNEL
1436 select CPU_SUPPORTS_HIGHMEM
1437 select CPU_SUPPORTS_HUGEPAGES
1439 Choose this option to build a kernel for release 1 or later of the
1440 MIPS64 architecture. Many modern embedded systems with a 64-bit
1441 MIPS processor are based on a MIPS64 processor. If you know the
1442 specific type of processor in your system, choose those that one
1443 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1444 Release 2 of the MIPS64 architecture is available since several
1445 years so chances are you even have a MIPS64 Release 2 processor
1446 in which case you should choose CPU_MIPS64_R2 instead for better
1449 config CPU_MIPS64_R2
1450 bool "MIPS64 Release 2"
1451 depends on SYS_HAS_CPU_MIPS64_R2
1452 select CPU_HAS_PREFETCH
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_64BIT_KERNEL
1455 select CPU_SUPPORTS_HIGHMEM
1456 select CPU_SUPPORTS_HUGEPAGES
1457 select CPU_SUPPORTS_MSA
1459 Choose this option to build a kernel for release 2 or later of the
1460 MIPS64 architecture. Many modern embedded systems with a 64-bit
1461 MIPS processor are based on a MIPS64 processor. If you know the
1462 specific type of processor in your system, choose those that one
1463 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1465 config CPU_MIPS64_R6
1466 bool "MIPS64 Release 6"
1467 depends on SYS_HAS_CPU_MIPS64_R6
1468 select CPU_HAS_PREFETCH
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_64BIT_KERNEL
1471 select CPU_SUPPORTS_HIGHMEM
1472 select CPU_SUPPORTS_MSA
1474 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1476 Choose this option to build a kernel for release 6 or later of the
1477 MIPS64 architecture. New MIPS processors, starting with the Warrior
1478 family, are based on a MIPS64r6 processor. If you own an older
1479 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1483 depends on SYS_HAS_CPU_R3000
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1488 Please make sure to pick the right CPU type. Linux/MIPS is not
1489 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1490 *not* work on R4000 machines and vice versa. However, since most
1491 of the supported machines have an R4000 (or similar) CPU, R4x00
1492 might be a safe bet. If the resulting kernel does not work,
1493 try to recompile with R3000.
1497 depends on SYS_HAS_CPU_TX39XX
1498 select CPU_SUPPORTS_32BIT_KERNEL
1502 depends on SYS_HAS_CPU_VR41XX
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1506 The options selects support for the NEC VR4100 series of processors.
1507 Only choose this option if you have one of these processors as a
1508 kernel built with this option will not run on any other type of
1509 processor or vice versa.
1513 depends on SYS_HAS_CPU_R4300
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_64BIT_KERNEL
1517 MIPS Technologies R4300-series processors.
1521 depends on SYS_HAS_CPU_R4X00
1522 select CPU_SUPPORTS_32BIT_KERNEL
1523 select CPU_SUPPORTS_64BIT_KERNEL
1524 select CPU_SUPPORTS_HUGEPAGES
1526 MIPS Technologies R4000-series processors other than 4300, including
1527 the R4000, R4400, R4600, and 4700.
1531 depends on SYS_HAS_CPU_TX49XX
1532 select CPU_HAS_PREFETCH
1533 select CPU_SUPPORTS_32BIT_KERNEL
1534 select CPU_SUPPORTS_64BIT_KERNEL
1535 select CPU_SUPPORTS_HUGEPAGES
1539 depends on SYS_HAS_CPU_R5000
1540 select CPU_SUPPORTS_32BIT_KERNEL
1541 select CPU_SUPPORTS_64BIT_KERNEL
1542 select CPU_SUPPORTS_HUGEPAGES
1544 MIPS Technologies R5000-series processors other than the Nevada.
1548 depends on SYS_HAS_CPU_R5432
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1551 select CPU_SUPPORTS_HUGEPAGES
1555 depends on SYS_HAS_CPU_R5500
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HUGEPAGES
1560 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1565 depends on SYS_HAS_CPU_R6000
1566 select CPU_SUPPORTS_32BIT_KERNEL
1568 MIPS Technologies R6000 and R6000A series processors. Note these
1569 processors are extremely rare and the support for them is incomplete.
1573 depends on SYS_HAS_CPU_NEVADA
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 select CPU_SUPPORTS_HUGEPAGES
1578 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1582 depends on SYS_HAS_CPU_R8000
1583 select CPU_HAS_PREFETCH
1584 select CPU_SUPPORTS_64BIT_KERNEL
1586 MIPS Technologies R8000 processors. Note these processors are
1587 uncommon and the support for them is incomplete.
1591 depends on SYS_HAS_CPU_R10000
1592 select CPU_HAS_PREFETCH
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HIGHMEM
1596 select CPU_SUPPORTS_HUGEPAGES
1598 MIPS Technologies R10000-series processors.
1602 depends on SYS_HAS_CPU_RM7000
1603 select CPU_HAS_PREFETCH
1604 select CPU_SUPPORTS_32BIT_KERNEL
1605 select CPU_SUPPORTS_64BIT_KERNEL
1606 select CPU_SUPPORTS_HIGHMEM
1607 select CPU_SUPPORTS_HUGEPAGES
1611 depends on SYS_HAS_CPU_SB1
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HIGHMEM
1615 select CPU_SUPPORTS_HUGEPAGES
1616 select WEAK_ORDERING
1618 config CPU_CAVIUM_OCTEON
1619 bool "Cavium Octeon processor"
1620 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1621 select CPU_HAS_PREFETCH
1622 select CPU_SUPPORTS_64BIT_KERNEL
1623 select WEAK_ORDERING
1624 select CPU_SUPPORTS_HIGHMEM
1625 select CPU_SUPPORTS_HUGEPAGES
1626 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1627 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1628 select MIPS_L1_CACHE_SHIFT_7
1630 The Cavium Octeon processor is a highly integrated chip containing
1631 many ethernet hardware widgets for networking tasks. The processor
1632 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1633 Full details can be found at http://www.caviumnetworks.com.
1636 bool "Broadcom BMIPS"
1637 depends on SYS_HAS_CPU_BMIPS
1639 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1640 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1641 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1642 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select DMA_NONCOHERENT
1646 select SWAP_IO_SPACE
1647 select WEAK_ORDERING
1648 select CPU_SUPPORTS_HIGHMEM
1649 select CPU_HAS_PREFETCH
1651 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1654 bool "Netlogic XLR SoC"
1655 depends on SYS_HAS_CPU_XLR
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1660 select WEAK_ORDERING
1661 select WEAK_REORDERING_BEYOND_LLSC
1663 Netlogic Microsystems XLR/XLS processors.
1666 bool "Netlogic XLP SoC"
1667 depends on SYS_HAS_CPU_XLP
1668 select CPU_SUPPORTS_32BIT_KERNEL
1669 select CPU_SUPPORTS_64BIT_KERNEL
1670 select CPU_SUPPORTS_HIGHMEM
1671 select WEAK_ORDERING
1672 select WEAK_REORDERING_BEYOND_LLSC
1673 select CPU_HAS_PREFETCH
1675 select CPU_SUPPORTS_HUGEPAGES
1677 Netlogic Microsystems XLP processors.
1680 config CPU_MIPS32_3_5_FEATURES
1681 bool "MIPS32 Release 3.5 Features"
1682 depends on SYS_HAS_CPU_MIPS32_R3_5
1683 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1685 Choose this option to build a kernel for release 2 or later of the
1686 MIPS32 architecture including features from the 3.5 release such as
1687 support for Enhanced Virtual Addressing (EVA).
1689 config CPU_MIPS32_3_5_EVA
1690 bool "Enhanced Virtual Addressing (EVA)"
1691 depends on CPU_MIPS32_3_5_FEATURES
1695 Choose this option if you want to enable the Enhanced Virtual
1696 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1697 One of its primary benefits is an increase in the maximum size
1698 of lowmem (up to 3GB). If unsure, say 'N' here.
1700 config CPU_MIPS32_R5_FEATURES
1701 bool "MIPS32 Release 5 Features"
1702 depends on SYS_HAS_CPU_MIPS32_R5
1703 depends on CPU_MIPS32_R2
1705 Choose this option to build a kernel for release 2 or later of the
1706 MIPS32 architecture including features from release 5 such as
1707 support for Extended Physical Addressing (XPA).
1709 config CPU_MIPS32_R5_XPA
1710 bool "Extended Physical Addressing (XPA)"
1711 depends on CPU_MIPS32_R5_FEATURES
1713 depends on !PAGE_SIZE_4KB
1714 depends on SYS_SUPPORTS_HIGHMEM
1717 select ARCH_PHYS_ADDR_T_64BIT
1720 Choose this option if you want to enable the Extended Physical
1721 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1722 benefit is to increase physical addressing equal to or greater
1723 than 40 bits. Note that this has the side effect of turning on
1724 64-bit addressing which in turn makes the PTEs 64-bit in size.
1725 If unsure, say 'N' here.
1728 config CPU_NOP_WORKAROUNDS
1731 config CPU_JUMP_WORKAROUNDS
1734 config CPU_LOONGSON2F_WORKAROUNDS
1735 bool "Loongson 2F Workarounds"
1737 select CPU_NOP_WORKAROUNDS
1738 select CPU_JUMP_WORKAROUNDS
1740 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1741 require workarounds. Without workarounds the system may hang
1742 unexpectedly. For more information please refer to the gas
1743 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1745 Loongson 2F03 and later have fixed these issues and no workarounds
1746 are needed. The workarounds have no significant side effect on them
1747 but may decrease the performance of the system so this option should
1748 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1751 If unsure, please say Y.
1752 endif # CPU_LOONGSON2F
1754 config SYS_SUPPORTS_ZBOOT
1756 select HAVE_KERNEL_GZIP
1757 select HAVE_KERNEL_BZIP2
1758 select HAVE_KERNEL_LZ4
1759 select HAVE_KERNEL_LZMA
1760 select HAVE_KERNEL_LZO
1761 select HAVE_KERNEL_XZ
1763 config SYS_SUPPORTS_ZBOOT_UART16550
1765 select SYS_SUPPORTS_ZBOOT
1767 config SYS_SUPPORTS_ZBOOT_UART_PROM
1769 select SYS_SUPPORTS_ZBOOT
1771 config CPU_LOONGSON2
1773 select CPU_SUPPORTS_32BIT_KERNEL
1774 select CPU_SUPPORTS_64BIT_KERNEL
1775 select CPU_SUPPORTS_HIGHMEM
1776 select CPU_SUPPORTS_HUGEPAGES
1778 config CPU_LOONGSON1
1782 select CPU_HAS_PREFETCH
1783 select CPU_SUPPORTS_32BIT_KERNEL
1784 select CPU_SUPPORTS_HIGHMEM
1785 select CPU_SUPPORTS_CPUFREQ
1787 config CPU_BMIPS32_3300
1788 select SMP_UP if SMP
1791 config CPU_BMIPS4350
1793 select SYS_SUPPORTS_SMP
1794 select SYS_SUPPORTS_HOTPLUG_CPU
1796 config CPU_BMIPS4380
1798 select MIPS_L1_CACHE_SHIFT_6
1799 select SYS_SUPPORTS_SMP
1800 select SYS_SUPPORTS_HOTPLUG_CPU
1802 config CPU_BMIPS5000
1804 select MIPS_CPU_SCACHE
1805 select MIPS_L1_CACHE_SHIFT_7
1806 select SYS_SUPPORTS_SMP
1807 select SYS_SUPPORTS_HOTPLUG_CPU
1809 config SYS_HAS_CPU_LOONGSON3
1811 select CPU_SUPPORTS_CPUFREQ
1813 config SYS_HAS_CPU_LOONGSON2E
1816 config SYS_HAS_CPU_LOONGSON2F
1818 select CPU_SUPPORTS_CPUFREQ
1819 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1820 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1822 config SYS_HAS_CPU_LOONGSON1B
1825 config SYS_HAS_CPU_MIPS32_R1
1828 config SYS_HAS_CPU_MIPS32_R2
1831 config SYS_HAS_CPU_MIPS32_R3_5
1834 config SYS_HAS_CPU_MIPS32_R5
1837 config SYS_HAS_CPU_MIPS32_R6
1840 config SYS_HAS_CPU_MIPS64_R1
1843 config SYS_HAS_CPU_MIPS64_R2
1846 config SYS_HAS_CPU_MIPS64_R6
1849 config SYS_HAS_CPU_R3000
1852 config SYS_HAS_CPU_TX39XX
1855 config SYS_HAS_CPU_VR41XX
1858 config SYS_HAS_CPU_R4300
1861 config SYS_HAS_CPU_R4X00
1864 config SYS_HAS_CPU_TX49XX
1867 config SYS_HAS_CPU_R5000
1870 config SYS_HAS_CPU_R5432
1873 config SYS_HAS_CPU_R5500
1876 config SYS_HAS_CPU_R6000
1879 config SYS_HAS_CPU_NEVADA
1882 config SYS_HAS_CPU_R8000
1885 config SYS_HAS_CPU_R10000
1888 config SYS_HAS_CPU_RM7000
1891 config SYS_HAS_CPU_SB1
1894 config SYS_HAS_CPU_CAVIUM_OCTEON
1897 config SYS_HAS_CPU_BMIPS
1900 config SYS_HAS_CPU_BMIPS32_3300
1902 select SYS_HAS_CPU_BMIPS
1904 config SYS_HAS_CPU_BMIPS4350
1906 select SYS_HAS_CPU_BMIPS
1908 config SYS_HAS_CPU_BMIPS4380
1910 select SYS_HAS_CPU_BMIPS
1912 config SYS_HAS_CPU_BMIPS5000
1914 select SYS_HAS_CPU_BMIPS
1916 config SYS_HAS_CPU_XLR
1919 config SYS_HAS_CPU_XLP
1922 config MIPS_MALTA_PM
1923 depends on MIPS_MALTA
1929 # CPU may reorder R->R, R->W, W->R, W->W
1930 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1932 config WEAK_ORDERING
1936 # CPU may reorder reads and writes beyond LL/SC
1937 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1939 config WEAK_REORDERING_BEYOND_LLSC
1944 # These two indicate any level of the MIPS32 and MIPS64 architecture
1948 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1952 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1955 # These two indicate the revision of the architecture, either Release 1 or Release 2
1959 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1963 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1968 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1977 config SYS_SUPPORTS_32BIT_KERNEL
1979 config SYS_SUPPORTS_64BIT_KERNEL
1981 config CPU_SUPPORTS_32BIT_KERNEL
1983 config CPU_SUPPORTS_64BIT_KERNEL
1985 config CPU_SUPPORTS_CPUFREQ
1987 config CPU_SUPPORTS_ADDRWINCFG
1989 config CPU_SUPPORTS_HUGEPAGES
1991 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1993 config MIPS_PGD_C0_CONTEXT
1995 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1998 # Set to y for ptrace access to watch registers.
2000 config HARDWARE_WATCHPOINTS
2002 default y if CPU_MIPSR1 || CPU_MIPSR2
2007 prompt "Kernel code model"
2009 You should only select this option if you have a workload that
2010 actually benefits from 64-bit processing or if your machine has
2011 large memory. You will only be presented a single option in this
2012 menu if your system does not support both 32-bit and 64-bit kernels.
2015 bool "32-bit kernel"
2016 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2019 Select this option if you want to build a 32-bit kernel.
2022 bool "64-bit kernel"
2023 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2025 Select this option if you want to build a 64-bit kernel.
2030 bool "KVM Guest Kernel"
2031 depends on BROKEN_ON_SMP
2033 Select this option if building a guest kernel for KVM (Trap & Emulate)
2036 config KVM_GUEST_TIMER_FREQ
2037 int "Count/Compare Timer Frequency (MHz)"
2038 depends on KVM_GUEST
2041 Set this to non-zero if building a guest kernel for KVM to skip RTC
2042 emulation when determining guest CPU Frequency. Instead, the guest's
2043 timer frequency is specified directly.
2046 prompt "Kernel page size"
2047 default PAGE_SIZE_4KB
2049 config PAGE_SIZE_4KB
2051 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2053 This option select the standard 4kB Linux page size. On some
2054 R3000-family processors this is the only available page size. Using
2055 4kB page size will minimize memory consumption and is therefore
2056 recommended for low memory systems.
2058 config PAGE_SIZE_8KB
2060 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2062 Using 8kB page size will result in higher performance kernel at
2063 the price of higher memory consumption. This option is available
2064 only on R8000 and cnMIPS processors. Note that you will need a
2065 suitable Linux distribution to support this.
2067 config PAGE_SIZE_16KB
2069 depends on !CPU_R3000 && !CPU_TX39XX
2071 Using 16kB page size will result in higher performance kernel at
2072 the price of higher memory consumption. This option is available on
2073 all non-R3000 family processors. Note that you will need a suitable
2074 Linux distribution to support this.
2076 config PAGE_SIZE_32KB
2078 depends on CPU_CAVIUM_OCTEON
2080 Using 32kB page size will result in higher performance kernel at
2081 the price of higher memory consumption. This option is available
2082 only on cnMIPS cores. Note that you will need a suitable Linux
2083 distribution to support this.
2085 config PAGE_SIZE_64KB
2087 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2089 Using 64kB page size will result in higher performance kernel at
2090 the price of higher memory consumption. This option is available on
2091 all non-R3000 family processor. Not that at the time of this
2092 writing this option is still high experimental.
2096 config FORCE_MAX_ZONEORDER
2097 int "Maximum zone order"
2098 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2099 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2100 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2101 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2102 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2103 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2107 The kernel memory allocator divides physically contiguous memory
2108 blocks into "zones", where each zone is a power of two number of
2109 pages. This option selects the largest power of two that the kernel
2110 keeps in the memory allocator. If you need to allocate very large
2111 blocks of physically contiguous memory, then you may need to
2112 increase this value.
2114 This config option is actually maximum order plus one. For example,
2115 a value of 11 means that the largest free memory block is 2^10 pages.
2117 The page size is not necessarily 4KB. Keep this in mind
2118 when choosing a value for this option.
2123 config IP22_CPU_SCACHE
2128 # Support for a MIPS32 / MIPS64 style S-caches
2130 config MIPS_CPU_SCACHE
2134 config R5000_CPU_SCACHE
2138 config RM7000_CPU_SCACHE
2142 config SIBYTE_DMA_PAGEOPS
2143 bool "Use DMA to clear/copy pages"
2146 Instead of using the CPU to zero and copy pages, use a Data Mover
2147 channel. These DMA channels are otherwise unused by the standard
2148 SiByte Linux port. Seems to give a small performance benefit.
2150 config CPU_HAS_PREFETCH
2153 config CPU_GENERIC_DUMP_TLB
2155 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2159 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2161 config CPU_R4K_CACHE_TLB
2163 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2166 bool "MIPS MT SMP support (1 TC on each available VPE)"
2167 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2168 select CPU_MIPSR2_IRQ_VI
2169 select CPU_MIPSR2_IRQ_EI
2174 select SYS_SUPPORTS_SMP
2175 select SYS_SUPPORTS_SCHED_SMT
2176 select MIPS_PERF_SHARED_TC_COUNTERS
2178 This is a kernel model which is known as SMVP. This is supported
2179 on cores with the MT ASE and uses the available VPEs to implement
2180 virtual processors which supports SMP. This is equivalent to the
2181 Intel Hyperthreading feature. For further information go to
2182 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2188 bool "SMT (multithreading) scheduler support"
2189 depends on SYS_SUPPORTS_SCHED_SMT
2192 SMT scheduler support improves the CPU scheduler's decision making
2193 when dealing with MIPS MT enabled cores at a cost of slightly
2194 increased overhead in some places. If unsure say N here.
2196 config SYS_SUPPORTS_SCHED_SMT
2199 config SYS_SUPPORTS_MULTITHREADING
2202 config MIPS_MT_FPAFF
2203 bool "Dynamic FPU affinity for FP-intensive threads"
2205 depends on MIPS_MT_SMP
2207 config MIPSR2_TO_R6_EMULATOR
2208 bool "MIPS R2-to-R6 emulator"
2209 depends on CPU_MIPSR6 && !SMP
2212 Choose this option if you want to run non-R6 MIPS userland code.
2213 Even if you say 'Y' here, the emulator will still be disabled by
2214 default. You can enable it using the 'mipsr2emu' kernel option.
2215 The only reason this is a build-time option is to save ~14K from the
2217 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2218 depends on SMP && CPU_MIPSR6
2220 config MIPS_VPE_LOADER
2221 bool "VPE loader support."
2222 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2223 select CPU_MIPSR2_IRQ_VI
2224 select CPU_MIPSR2_IRQ_EI
2227 Includes a loader for loading an elf relocatable object
2228 onto another VPE and running it.
2230 config MIPS_VPE_LOADER_CMP
2233 depends on MIPS_VPE_LOADER && MIPS_CMP
2235 config MIPS_VPE_LOADER_MT
2238 depends on MIPS_VPE_LOADER && !MIPS_CMP
2240 config MIPS_VPE_LOADER_TOM
2241 bool "Load VPE program into memory hidden from linux"
2242 depends on MIPS_VPE_LOADER
2245 The loader can use memory that is present but has been hidden from
2246 Linux using the kernel command line option "mem=xxMB". It's up to
2247 you to ensure the amount you put in the option and the space your
2248 program requires is less or equal to the amount physically present.
2250 config MIPS_VPE_APSP_API
2251 bool "Enable support for AP/SP API (RTLX)"
2252 depends on MIPS_VPE_LOADER
2255 config MIPS_VPE_APSP_API_CMP
2258 depends on MIPS_VPE_APSP_API && MIPS_CMP
2260 config MIPS_VPE_APSP_API_MT
2263 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2266 bool "MIPS CMP framework support (DEPRECATED)"
2267 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2270 select SYS_SUPPORTS_SMP
2271 select WEAK_ORDERING
2274 Select this if you are using a bootloader which implements the "CMP
2275 framework" protocol (ie. YAMON) and want your kernel to make use of
2276 its ability to start secondary CPUs.
2278 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2282 bool "MIPS Coherent Processing System support"
2283 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2286 select MIPS_CPS_PM if HOTPLUG_CPU
2288 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2289 select SYS_SUPPORTS_HOTPLUG_CPU
2290 select SYS_SUPPORTS_SMP
2291 select WEAK_ORDERING
2293 Select this if you wish to run an SMP kernel across multiple cores
2294 within a MIPS Coherent Processing System. When this option is
2295 enabled the kernel will probe for other cores and boot them with
2296 no external assistance. It is safe to enable this when hardware
2297 support is unavailable.
2310 config SB1_PASS_2_WORKAROUNDS
2312 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2315 config SB1_PASS_2_1_WORKAROUNDS
2317 depends on CPU_SB1 && CPU_SB1_PASS_2
2321 config ARCH_PHYS_ADDR_T_64BIT
2325 prompt "SmartMIPS or microMIPS ASE support"
2327 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2330 Select this if you want neither microMIPS nor SmartMIPS support
2332 config CPU_HAS_SMARTMIPS
2333 depends on SYS_SUPPORTS_SMARTMIPS
2336 SmartMIPS is a extension of the MIPS32 architecture aimed at
2337 increased security at both hardware and software level for
2338 smartcards. Enabling this option will allow proper use of the
2339 SmartMIPS instructions by Linux applications. However a kernel with
2340 this option will not work on a MIPS core without SmartMIPS core. If
2341 you don't know you probably don't have SmartMIPS and should say N
2344 config CPU_MICROMIPS
2345 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2348 When this option is enabled the kernel will be built using the
2354 bool "Support for the MIPS SIMD Architecture"
2355 depends on CPU_SUPPORTS_MSA
2356 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2358 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2359 and a set of SIMD instructions to operate on them. When this option
2360 is enabled the kernel will support allocating & switching MSA
2361 vector register contexts. If you know that your kernel will only be
2362 running on CPUs which do not support MSA or that your userland will
2363 not be making use of it then you may wish to say N here to reduce
2364 the size & complexity of your kernel.
2375 # Vectored interrupt mode is an R2 feature
2377 config CPU_MIPSR2_IRQ_VI
2381 # Extended interrupt mode is an R2 feature
2383 config CPU_MIPSR2_IRQ_EI
2388 depends on !CPU_R3000
2394 config CPU_DADDI_WORKAROUNDS
2397 config CPU_R4000_WORKAROUNDS
2399 select CPU_R4400_WORKAROUNDS
2401 config CPU_R4400_WORKAROUNDS
2405 # - Highmem only makes sense for the 32-bit kernel.
2406 # - The current highmem code will only work properly on physically indexed
2407 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2408 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2409 # moment we protect the user and offer the highmem option only on machines
2410 # where it's known to be safe. This will not offer highmem on a few systems
2411 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2412 # indexed CPUs but we're playing safe.
2413 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2414 # know they might have memory configurations that could make use of highmem
2418 bool "High Memory Support"
2419 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2421 config CPU_SUPPORTS_HIGHMEM
2424 config SYS_SUPPORTS_HIGHMEM
2427 config SYS_SUPPORTS_SMARTMIPS
2430 config SYS_SUPPORTS_MICROMIPS
2433 config SYS_SUPPORTS_MIPS16
2436 This option must be set if a kernel might be executed on a MIPS16-
2437 enabled CPU even if MIPS16 is not actually being used. In other
2438 words, it makes the kernel MIPS16-tolerant.
2440 config CPU_SUPPORTS_MSA
2443 config ARCH_FLATMEM_ENABLE
2445 depends on !NUMA && !CPU_LOONGSON2
2447 config ARCH_DISCONTIGMEM_ENABLE
2449 default y if SGI_IP27
2451 Say Y to support efficient handling of discontiguous physical memory,
2452 for architectures which are either NUMA (Non-Uniform Memory Access)
2453 or have huge holes in the physical address space for other reasons.
2454 See <file:Documentation/vm/numa> for more.
2456 config ARCH_SPARSEMEM_ENABLE
2458 select SPARSEMEM_STATIC
2462 depends on SYS_SUPPORTS_NUMA
2464 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2465 Access). This option improves performance on systems with more
2466 than two nodes; on two node systems it is generally better to
2467 leave it disabled; on single node systems disable this option
2470 config SYS_SUPPORTS_NUMA
2476 depends on NEED_MULTIPLE_NODES
2478 config HW_PERF_EVENTS
2479 bool "Enable hardware performance counter support for perf events"
2480 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2483 Enable hardware performance counter support for perf events. If
2484 disabled, perf events will use software events only.
2489 bool "Multi-Processing support"
2490 depends on SYS_SUPPORTS_SMP
2492 This enables support for systems with more than one CPU. If you have
2493 a system with only one CPU, say N. If you have a system with more
2494 than one CPU, say Y.
2496 If you say N here, the kernel will run on uni- and multiprocessor
2497 machines, but will use only one CPU of a multiprocessor machine. If
2498 you say Y here, the kernel will run on many, but not all,
2499 uniprocessor machines. On a uniprocessor machine, the kernel
2500 will run faster if you say N here.
2502 People using multiprocessor machines who say Y here should also say
2503 Y to "Enhanced Real Time Clock Support", below.
2505 See also the SMP-HOWTO available at
2506 <http://www.tldp.org/docs.html#howto>.
2508 If you don't know what to do here, say N.
2513 config SYS_SUPPORTS_MIPS_CMP
2516 config SYS_SUPPORTS_MIPS_CPS
2519 config SYS_SUPPORTS_SMP
2522 config NR_CPUS_DEFAULT_4
2525 config NR_CPUS_DEFAULT_8
2528 config NR_CPUS_DEFAULT_16
2531 config NR_CPUS_DEFAULT_32
2534 config NR_CPUS_DEFAULT_64
2538 int "Maximum number of CPUs (2-256)"
2541 default "4" if NR_CPUS_DEFAULT_4
2542 default "8" if NR_CPUS_DEFAULT_8
2543 default "16" if NR_CPUS_DEFAULT_16
2544 default "32" if NR_CPUS_DEFAULT_32
2545 default "64" if NR_CPUS_DEFAULT_64
2547 This allows you to specify the maximum number of CPUs which this
2548 kernel will support. The maximum supported value is 32 for 32-bit
2549 kernel and 64 for 64-bit kernels; the minimum value which makes
2550 sense is 1 for Qemu (useful only for kernel debugging purposes)
2551 and 2 for all others.
2553 This is purely to save memory - each supported CPU adds
2554 approximately eight kilobytes to the kernel image. For best
2555 performance should round up your number of processors to the next
2558 config MIPS_PERF_SHARED_TC_COUNTERS
2562 # Timer Interrupt Frequency Configuration
2566 prompt "Timer frequency"
2569 Allows the configuration of the timer frequency.
2572 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2575 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2578 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2581 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2584 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2587 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2590 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2593 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2597 config SYS_SUPPORTS_24HZ
2600 config SYS_SUPPORTS_48HZ
2603 config SYS_SUPPORTS_100HZ
2606 config SYS_SUPPORTS_128HZ
2609 config SYS_SUPPORTS_250HZ
2612 config SYS_SUPPORTS_256HZ
2615 config SYS_SUPPORTS_1000HZ
2618 config SYS_SUPPORTS_1024HZ
2621 config SYS_SUPPORTS_ARBIT_HZ
2623 default y if !SYS_SUPPORTS_24HZ && \
2624 !SYS_SUPPORTS_48HZ && \
2625 !SYS_SUPPORTS_100HZ && \
2626 !SYS_SUPPORTS_128HZ && \
2627 !SYS_SUPPORTS_250HZ && \
2628 !SYS_SUPPORTS_256HZ && \
2629 !SYS_SUPPORTS_1000HZ && \
2630 !SYS_SUPPORTS_1024HZ
2636 default 100 if HZ_100
2637 default 128 if HZ_128
2638 default 250 if HZ_250
2639 default 256 if HZ_256
2640 default 1000 if HZ_1000
2641 default 1024 if HZ_1024
2644 def_bool HIGH_RES_TIMERS
2646 source "kernel/Kconfig.preempt"
2649 bool "Kexec system call"
2652 kexec is a system call that implements the ability to shutdown your
2653 current kernel, and to start another kernel. It is like a reboot
2654 but it is independent of the system firmware. And like a reboot
2655 you can start any kernel with it, not just Linux.
2657 The name comes from the similarity to the exec system call.
2659 It is an ongoing process to be certain the hardware in a machine
2660 is properly shutdown, so do not be surprised if this code does not
2661 initially work for you. As of this writing the exact hardware
2662 interface is strongly in flux, so no good recommendation can be
2666 bool "Kernel crash dumps"
2668 Generate crash dump after being started by kexec.
2669 This should be normally only set in special crash dump kernels
2670 which are loaded in the main kernel with kexec-tools into
2671 a specially reserved region and then later executed after
2672 a crash by kdump/kexec. The crash dump kernel must be compiled
2673 to a memory address not used by the main kernel or firmware using
2676 config PHYSICAL_START
2677 hex "Physical address where the kernel is loaded"
2678 default "0xffffffff84000000" if 64BIT
2679 default "0x84000000" if 32BIT
2680 depends on CRASH_DUMP
2682 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2683 If you plan to use kernel for capturing the crash dump change
2684 this value to start of the reserved region (the "X" value as
2685 specified in the "crashkernel=YM@XM" command line boot parameter
2686 passed to the panic-ed kernel).
2689 bool "Enable seccomp to safely compute untrusted bytecode"
2693 This kernel feature is useful for number crunching applications
2694 that may need to compute untrusted bytecode during their
2695 execution. By using pipes or other transports made available to
2696 the process as file descriptors supporting the read/write
2697 syscalls, it's possible to isolate those applications in
2698 their own address space using seccomp. Once seccomp is
2699 enabled via /proc/<pid>/seccomp, it cannot be disabled
2700 and the task is only allowed to execute a few safe syscalls
2701 defined by each seccomp mode.
2703 If unsure, say Y. Only embedded should say N here.
2705 config MIPS_O32_FP64_SUPPORT
2706 bool "Support for O32 binaries using 64-bit FP"
2707 depends on 32BIT || MIPS32_O32
2709 When this is enabled, the kernel will support use of 64-bit floating
2710 point registers with binaries using the O32 ABI along with the
2711 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2712 32-bit MIPS systems this support is at the cost of increasing the
2713 size and complexity of the compiled FPU emulator. Thus if you are
2714 running a MIPS32 system and know that none of your userland binaries
2715 will require 64-bit floating point, you may wish to reduce the size
2716 of your kernel & potentially improve FP emulation performance by
2719 Although binutils currently supports use of this flag the details
2720 concerning its effect upon the O32 ABI in userland are still being
2721 worked on. In order to avoid userland becoming dependant upon current
2722 behaviour before the details have been finalised, this option should
2723 be considered experimental and only enabled by those working upon
2731 select OF_EARLY_FLATTREE
2738 prompt "Kernel appended dtb support" if USE_OF
2739 default MIPS_NO_APPENDED_DTB
2741 config MIPS_NO_APPENDED_DTB
2744 Do not enable appended dtb support.
2746 config MIPS_ELF_APPENDED_DTB
2749 With this option, the boot code will look for a device tree binary
2750 DTB) included in the vmlinux ELF section .appended_dtb. By default
2751 it is empty and the DTB can be appended using binutils command
2754 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2756 This is meant as a backward compatiblity convenience for those
2757 systems with a bootloader that can't be upgraded to accommodate
2758 the documented boot protocol using a device tree.
2760 config MIPS_RAW_APPENDED_DTB
2763 With this option, the boot code will look for a device tree binary
2764 DTB) appended to raw vmlinux.bin (without decompressor).
2765 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2767 This is meant as a backward compatibility convenience for those
2768 systems with a bootloader that can't be upgraded to accommodate
2769 the documented boot protocol using a device tree.
2771 Beware that there is very little in terms of protection against
2772 this option being confused by leftover garbage in memory that might
2773 look like a DTB header after a reboot if no actual DTB is appended
2774 to vmlinux.bin. Do not leave this option active in a production kernel
2775 if you don't intend to always append a DTB.
2777 config MIPS_ZBOOT_APPENDED_DTB
2779 depends on SYS_SUPPORTS_ZBOOT
2781 With this option, the boot code will look for a device tree binary
2782 DTB) appended to raw vmlinuz.bin (with decompressor).
2783 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2785 This is meant as a backward compatibility convenience for those
2786 systems with a bootloader that can't be upgraded to accommodate
2787 the documented boot protocol using a device tree.
2789 Beware that there is very little in terms of protection against
2790 this option being confused by leftover garbage in memory that might
2791 look like a DTB header after a reboot if no actual DTB is appended
2792 to vmlinuz.bin. Do not leave this option active in a production kernel
2793 if you don't intend to always append a DTB.
2797 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2798 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2799 !MIPS_MALTA && !MIPS_SEAD3 && \
2801 default MIPS_CMDLINE_FROM_BOOTLOADER
2803 config MIPS_CMDLINE_FROM_DTB
2805 bool "Dtb kernel arguments if available"
2807 config MIPS_CMDLINE_DTB_EXTEND
2809 bool "Extend dtb kernel arguments with bootloader arguments"
2811 config MIPS_CMDLINE_FROM_BOOTLOADER
2812 bool "Bootloader kernel arguments if available"
2817 config LOCKDEP_SUPPORT
2821 config STACKTRACE_SUPPORT
2825 config HAVE_LATENCYTOP_SUPPORT
2829 config PGTABLE_LEVELS
2831 default 3 if 64BIT && !PAGE_SIZE_64KB
2834 source "init/Kconfig"
2836 source "kernel/Kconfig.freezer"
2838 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2846 bool "Support for PCI controller"
2847 depends on HW_HAS_PCI
2849 select NO_GENERIC_PCI_IOPORT_MAP
2851 Find out whether you have a PCI motherboard. PCI is the name of a
2852 bus system, i.e. the way the CPU talks to the other stuff inside
2853 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2857 bool "Support for HT-linked PCI"
2859 depends on CPU_LOONGSON3
2863 Loongson family machines use Hyper-Transport bus for inter-core
2864 connection and device connection. The PCI bus is a subordinate
2865 linked at HT. Choose Y for Loongson-3 based machines.
2870 source "drivers/pci/Kconfig"
2873 # ISA support is now enabled via select. Too many systems still have the one
2874 # or other ISA chip on the board that users don't know about so don't expect
2875 # users to choose the right thing ...
2882 depends on HW_HAS_EISA
2884 select GENERIC_ISA_DMA
2886 The Extended Industry Standard Architecture (EISA) bus was
2887 developed as an open alternative to the IBM MicroChannel bus.
2889 The EISA bus provided some of the features of the IBM MicroChannel
2890 bus while maintaining backward compatibility with cards made for
2891 the older ISA bus. The EISA bus saw limited use between 1988 and
2892 1995 when it was made obsolete by the PCI bus.
2894 Say Y here if you are building a kernel for an EISA-based machine.
2898 source "drivers/eisa/Kconfig"
2901 bool "TURBOchannel support"
2902 depends on MACH_DECSTATION
2904 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2905 processors. TURBOchannel programming specifications are available
2907 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2909 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2910 Linux driver support status is documented at:
2911 <http://www.linux-mips.org/wiki/DECstation>
2921 select MIPS_EXTERNAL_TIMER
2929 source "drivers/pcmcia/Kconfig"
2932 tristate "RapidIO support"
2936 If you say Y here, the kernel will include drivers and
2937 infrastructure code to support RapidIO interconnect devices.
2939 source "drivers/rapidio/Kconfig"
2943 menu "Executable file formats"
2945 source "fs/Kconfig.binfmt"
2950 config MIPS32_COMPAT
2956 config SYSVIPC_COMPAT
2960 bool "Kernel support for o32 binaries"
2962 select ARCH_WANT_OLD_COMPAT_IPC
2964 select MIPS32_COMPAT
2965 select SYSVIPC_COMPAT if SYSVIPC
2967 Select this option if you want to run o32 binaries. These are pure
2968 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2969 existing binaries are in this format.
2974 bool "Kernel support for n32 binaries"
2977 select MIPS32_COMPAT
2978 select SYSVIPC_COMPAT if SYSVIPC
2980 Select this option if you want to run n32 binaries. These are
2981 64-bit binaries using 32-bit quantities for addressing and certain
2982 data that would normally be 64-bit. They are used in special
2989 default y if MIPS32_O32 || MIPS32_N32
2993 menu "Power management options"
2995 config ARCH_HIBERNATION_POSSIBLE
2997 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2999 config ARCH_SUSPEND_POSSIBLE
3001 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3003 source "kernel/power/Kconfig"
3007 config MIPS_EXTERNAL_TIMER
3010 menu "CPU Power Management"
3012 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3013 source "drivers/cpufreq/Kconfig"
3016 source "drivers/cpuidle/Kconfig"
3020 source "net/Kconfig"
3022 source "drivers/Kconfig"
3024 source "drivers/firmware/Kconfig"
3028 source "arch/mips/Kconfig.debug"
3030 source "security/Kconfig"
3032 source "crypto/Kconfig"
3034 source "lib/Kconfig"
3036 source "arch/mips/kvm/Kconfig"