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
331 select HAVE_MACH_CLKDEV
335 select PINCTRL_LANTIQ
336 select ARCH_HAS_RESET_CONTROLLER
337 select RESET_CONTROLLER
340 bool "LASAT Networks platforms"
344 select DMA_NONCOHERENT
345 select SYS_HAS_EARLY_PRINTK
348 select PCI_GT64XXX_PCI0
350 select R5000_CPU_SCACHE
351 select SYS_HAS_CPU_R5000
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
354 select SYS_SUPPORTS_LITTLE_ENDIAN
356 config MACH_LOONGSON32
357 bool "Loongson-1 family of machines"
358 select SYS_SUPPORTS_ZBOOT
360 This enables support for the Loongson-1 family of machines.
362 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
363 the Institute of Computing Technology (ICT), Chinese Academy of
366 config MACH_LOONGSON64
367 bool "Loongson-2/3 family of machines"
368 select SYS_SUPPORTS_ZBOOT
370 This enables the support of Loongson-2/3 family of machines.
372 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
373 family of multi-core CPUs. They are both 64-bit general-purpose
374 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
375 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
376 in the People's Republic of China. The chief architect is Professor
379 config MACH_PISTACHIO
380 bool "IMG Pistachio SoC based boards"
381 select ARCH_REQUIRE_GPIOLIB
385 select CLKSRC_MIPS_GIC
388 select DMA_MAYBE_COHERENT
392 select MIPS_CPU_SCACHE
396 select SYS_HAS_CPU_MIPS32_R2
397 select SYS_SUPPORTS_32BIT_KERNEL
398 select SYS_SUPPORTS_LITTLE_ENDIAN
399 select SYS_SUPPORTS_MIPS_CPS
400 select SYS_SUPPORTS_MULTITHREADING
401 select SYS_SUPPORTS_ZBOOT
402 select SYS_HAS_EARLY_PRINTK
403 select USE_GENERIC_EARLY_PRINTK_8250
406 This enables support for the IMG Pistachio SoC platform.
409 bool "MIPSfpga Xilinx based boards"
410 select ARCH_REQUIRE_GPIOLIB
419 select MIPS_CPU_SCACHE
420 select SYS_HAS_EARLY_PRINTK
421 select SYS_HAS_CPU_MIPS32_R2
422 select SYS_SUPPORTS_32BIT_KERNEL
423 select SYS_SUPPORTS_LITTLE_ENDIAN
424 select SYS_SUPPORTS_ZBOOT_UART16550
426 select USE_GENERIC_EARLY_PRINTK_8250
428 This enables support for the IMG University Program MIPSfpga platform.
431 bool "MIPS Malta board"
432 select ARCH_MAY_HAVE_PC_FDC
438 select CLKSRC_MIPS_GIC
440 select DMA_MAYBE_COHERENT
441 select GENERIC_ISA_DMA
442 select HAVE_PCSPKR_PLATFORM
449 select MIPS_CPU_SCACHE
450 select MIPS_L1_CACHE_SHIFT_6
451 select PCI_GT64XXX_PCI0
455 select SYS_HAS_CPU_MIPS32_R1
456 select SYS_HAS_CPU_MIPS32_R2
457 select SYS_HAS_CPU_MIPS32_R3_5
458 select SYS_HAS_CPU_MIPS32_R5
459 select SYS_HAS_CPU_MIPS32_R6
460 select SYS_HAS_CPU_MIPS64_R1
461 select SYS_HAS_CPU_MIPS64_R2
462 select SYS_HAS_CPU_MIPS64_R6
463 select SYS_HAS_CPU_NEVADA
464 select SYS_HAS_CPU_RM7000
465 select SYS_SUPPORTS_32BIT_KERNEL
466 select SYS_SUPPORTS_64BIT_KERNEL
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_HIGHMEM
469 select SYS_SUPPORTS_LITTLE_ENDIAN
470 select SYS_SUPPORTS_MICROMIPS
471 select SYS_SUPPORTS_MIPS_CMP
472 select SYS_SUPPORTS_MIPS_CPS
473 select SYS_SUPPORTS_MIPS16
474 select SYS_SUPPORTS_MULTITHREADING
475 select SYS_SUPPORTS_SMARTMIPS
476 select SYS_SUPPORTS_ZBOOT
478 select ZONE_DMA32 if 64BIT
482 This enables support for the MIPS Technologies Malta evaluation
486 bool "Microchip PIC32 Family"
488 This enables support for the Microchip PIC32 family of platforms.
490 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
494 bool "MIPS SEAD3 board"
500 select CLKSRC_MIPS_GIC
502 select CPU_MIPSR2_IRQ_VI
503 select CPU_MIPSR2_IRQ_EI
504 select DMA_NONCOHERENT
509 select SYS_HAS_CPU_MIPS32_R1
510 select SYS_HAS_CPU_MIPS32_R2
511 select SYS_HAS_CPU_MIPS64_R1
512 select SYS_HAS_EARLY_PRINTK
513 select SYS_SUPPORTS_32BIT_KERNEL
514 select SYS_SUPPORTS_64BIT_KERNEL
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_LITTLE_ENDIAN
517 select SYS_SUPPORTS_SMARTMIPS
518 select SYS_SUPPORTS_MICROMIPS
519 select SYS_SUPPORTS_MIPS16
520 select USB_EHCI_BIG_ENDIAN_DESC
521 select USB_EHCI_BIG_ENDIAN_MMIO
524 This enables support for the MIPS Technologies SEAD3 evaluation
528 bool "NEC EMMA2RH Mark-eins board"
532 This enables support for the NEC Electronics Mark-eins boards.
535 bool "NEC VR4100 series based machines"
538 select SYS_HAS_CPU_VR41XX
539 select SYS_SUPPORTS_MIPS16
540 select ARCH_REQUIRE_GPIOLIB
543 bool "NXP STB220 board"
546 Support for NXP Semiconductors STB220 Development Board.
553 Support for NXP Semiconductors STB225 Development Board.
556 bool "PMC-Sierra MSP chipsets"
559 select DMA_NONCOHERENT
561 select NO_EXCEPT_FILL
563 select SYS_HAS_CPU_MIPS32_R1
564 select SYS_HAS_CPU_MIPS32_R2
565 select SYS_SUPPORTS_32BIT_KERNEL
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select SYS_SUPPORTS_MIPS16
570 select SERIAL_8250_CONSOLE
571 select USB_EHCI_BIG_ENDIAN_MMIO
572 select USB_EHCI_BIG_ENDIAN_DESC
574 This adds support for the PMC-Sierra family of Multi-Service
575 Processor System-On-A-Chips. These parts include a number
576 of integrated peripherals, interfaces and DSPs in addition to
577 a variety of MIPS cores.
580 bool "Ralink based machines"
584 select DMA_NONCOHERENT
587 select SYS_HAS_CPU_MIPS32_R1
588 select SYS_HAS_CPU_MIPS32_R2
589 select SYS_SUPPORTS_32BIT_KERNEL
590 select SYS_SUPPORTS_LITTLE_ENDIAN
591 select SYS_SUPPORTS_MIPS16
592 select SYS_HAS_EARLY_PRINTK
593 select HAVE_MACH_CLKDEV
595 select ARCH_HAS_RESET_CONTROLLER
596 select RESET_CONTROLLER
599 bool "SGI IP22 (Indy/Indigo2)"
605 select DEFAULT_SGI_PARTITION
606 select DMA_NONCOHERENT
610 select IP22_CPU_SCACHE
612 select GENERIC_ISA_DMA_SUPPORT_BROKEN
614 select SGI_HAS_INDYDOG
620 select SYS_HAS_CPU_R4X00
621 select SYS_HAS_CPU_R5000
623 # Disable EARLY_PRINTK for now since it leads to overwritten prom
624 # memory during early boot on some machines.
626 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
627 # for a more details discussion
629 # select SYS_HAS_EARLY_PRINTK
630 select SYS_SUPPORTS_32BIT_KERNEL
631 select SYS_SUPPORTS_64BIT_KERNEL
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select MIPS_L1_CACHE_SHIFT_7
635 This are the SGI Indy, Challenge S and Indigo2, as well as certain
636 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
637 that runs on these, say Y here.
640 bool "SGI IP27 (Origin200/2000)"
644 select DEFAULT_SGI_PARTITION
646 select SYS_HAS_EARLY_PRINTK
648 select NR_CPUS_DEFAULT_64
649 select SYS_HAS_CPU_R10000
650 select SYS_SUPPORTS_64BIT_KERNEL
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select SYS_SUPPORTS_NUMA
653 select SYS_SUPPORTS_SMP
654 select MIPS_L1_CACHE_SHIFT_7
656 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
657 workstations. To compile a Linux kernel that runs on these, say Y
661 bool "SGI IP28 (Indigo2 R10k)"
667 select DEFAULT_SGI_PARTITION
668 select DMA_NONCOHERENT
669 select GENERIC_ISA_DMA_SUPPORT_BROKEN
675 select SGI_HAS_INDYDOG
681 select SYS_HAS_CPU_R10000
683 # Disable EARLY_PRINTK for now since it leads to overwritten prom
684 # memory during early boot on some machines.
686 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
687 # for a more details discussion
689 # select SYS_HAS_EARLY_PRINTK
690 select SYS_SUPPORTS_64BIT_KERNEL
691 select SYS_SUPPORTS_BIG_ENDIAN
692 select MIPS_L1_CACHE_SHIFT_7
694 This is the SGI Indigo2 with R10000 processor. To compile a Linux
695 kernel that runs on these, say Y here.
704 select DMA_NONCOHERENT
707 select R5000_CPU_SCACHE
708 select RM7000_CPU_SCACHE
709 select SYS_HAS_CPU_R5000
710 select SYS_HAS_CPU_R10000 if BROKEN
711 select SYS_HAS_CPU_RM7000
712 select SYS_HAS_CPU_NEVADA
713 select SYS_SUPPORTS_64BIT_KERNEL
714 select SYS_SUPPORTS_BIG_ENDIAN
716 If you want this kernel to run on SGI O2 workstation, say Y here.
719 bool "Sibyte BCM91120C-CRhine"
722 select SIBYTE_BCM1120
724 select SYS_HAS_CPU_SB1
725 select SYS_SUPPORTS_BIG_ENDIAN
726 select SYS_SUPPORTS_LITTLE_ENDIAN
729 bool "Sibyte BCM91120x-Carmel"
732 select SIBYTE_BCM1120
734 select SYS_HAS_CPU_SB1
735 select SYS_SUPPORTS_BIG_ENDIAN
736 select SYS_SUPPORTS_LITTLE_ENDIAN
739 bool "Sibyte BCM91125C-CRhone"
742 select SIBYTE_BCM1125
744 select SYS_HAS_CPU_SB1
745 select SYS_SUPPORTS_BIG_ENDIAN
746 select SYS_SUPPORTS_HIGHMEM
747 select SYS_SUPPORTS_LITTLE_ENDIAN
750 bool "Sibyte BCM91125E-Rhone"
753 select SIBYTE_BCM1125H
755 select SYS_HAS_CPU_SB1
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select SYS_SUPPORTS_LITTLE_ENDIAN
760 bool "Sibyte BCM91250A-SWARM"
763 select HAVE_PATA_PLATFORM
766 select SYS_HAS_CPU_SB1
767 select SYS_SUPPORTS_BIG_ENDIAN
768 select SYS_SUPPORTS_HIGHMEM
769 select SYS_SUPPORTS_LITTLE_ENDIAN
770 select ZONE_DMA32 if 64BIT
772 config SIBYTE_LITTLESUR
773 bool "Sibyte BCM91250C2-LittleSur"
776 select HAVE_PATA_PLATFORM
779 select SYS_HAS_CPU_SB1
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_HIGHMEM
782 select SYS_SUPPORTS_LITTLE_ENDIAN
784 config SIBYTE_SENTOSA
785 bool "Sibyte BCM91250E-Sentosa"
790 select SYS_HAS_CPU_SB1
791 select SYS_SUPPORTS_BIG_ENDIAN
792 select SYS_SUPPORTS_LITTLE_ENDIAN
795 bool "Sibyte BCM91480B-BigSur"
798 select NR_CPUS_DEFAULT_4
799 select SIBYTE_BCM1x80
801 select SYS_HAS_CPU_SB1
802 select SYS_SUPPORTS_BIG_ENDIAN
803 select SYS_SUPPORTS_HIGHMEM
804 select SYS_SUPPORTS_LITTLE_ENDIAN
805 select ZONE_DMA32 if 64BIT
808 bool "SNI RM200/300/400"
809 select FW_ARC if CPU_LITTLE_ENDIAN
810 select FW_ARC32 if CPU_LITTLE_ENDIAN
811 select FW_SNIPROM if CPU_BIG_ENDIAN
812 select ARCH_MAY_HAVE_PC_FDC
816 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
817 select DMA_NONCOHERENT
818 select GENERIC_ISA_DMA
819 select HAVE_PCSPKR_PLATFORM
826 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
827 select SYS_HAS_CPU_R4X00
828 select SYS_HAS_CPU_R5000
829 select SYS_HAS_CPU_R10000
830 select R5000_CPU_SCACHE
831 select SYS_HAS_EARLY_PRINTK
832 select SYS_SUPPORTS_32BIT_KERNEL
833 select SYS_SUPPORTS_64BIT_KERNEL
834 select SYS_SUPPORTS_BIG_ENDIAN
835 select SYS_SUPPORTS_HIGHMEM
836 select SYS_SUPPORTS_LITTLE_ENDIAN
838 The SNI RM200/300/400 are MIPS-based machines manufactured by
839 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
840 Technology and now in turn merged with Fujitsu. Say Y here to
841 support this machine type.
844 bool "Toshiba TX39 series based machines"
847 bool "Toshiba TX49 series based machines"
849 config MIKROTIK_RB532
850 bool "Mikrotik RB532 boards"
853 select DMA_NONCOHERENT
856 select SYS_HAS_CPU_MIPS32_R1
857 select SYS_SUPPORTS_32BIT_KERNEL
858 select SYS_SUPPORTS_LITTLE_ENDIAN
861 select ARCH_REQUIRE_GPIOLIB
862 select MIPS_L1_CACHE_SHIFT_4
864 Support the Mikrotik(tm) RouterBoard 532 series,
865 based on the IDT RC32434 SoC.
867 config CAVIUM_OCTEON_SOC
868 bool "Cavium Networks Octeon SoC based boards"
870 select ARCH_PHYS_ADDR_T_64BIT
872 select SYS_SUPPORTS_64BIT_KERNEL
873 select SYS_SUPPORTS_BIG_ENDIAN
875 select EDAC_ATOMIC_SCRUB
876 select SYS_SUPPORTS_LITTLE_ENDIAN
877 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
878 select SYS_HAS_EARLY_PRINTK
879 select SYS_HAS_CPU_CAVIUM_OCTEON
884 select ARCH_REQUIRE_GPIOLIB
887 select ARCH_SPARSEMEM_ENABLE
888 select SYS_SUPPORTS_SMP
889 select NR_CPUS_DEFAULT_16
891 select MTD_COMPLEX_MAPPINGS
893 This option supports all of the Octeon reference boards from Cavium
894 Networks. It builds a kernel that dynamically determines the Octeon
895 CPU type and supports all known board reference implementations.
896 Some of the supported boards are:
903 Say Y here for most Octeon reference boards.
906 bool "Netlogic XLR/XLS based systems"
909 select SYS_HAS_CPU_XLR
910 select SYS_SUPPORTS_SMP
913 select SYS_SUPPORTS_32BIT_KERNEL
914 select SYS_SUPPORTS_64BIT_KERNEL
915 select ARCH_PHYS_ADDR_T_64BIT
916 select SYS_SUPPORTS_BIG_ENDIAN
917 select SYS_SUPPORTS_HIGHMEM
919 select NR_CPUS_DEFAULT_32
923 select ZONE_DMA32 if 64BIT
925 select SYS_HAS_EARLY_PRINTK
926 select SYS_SUPPORTS_ZBOOT
927 select SYS_SUPPORTS_ZBOOT_UART16550
929 Support for systems based on Netlogic XLR and XLS processors.
930 Say Y here if you have a XLR or XLS based board.
933 bool "Netlogic XLP based systems"
936 select SYS_HAS_CPU_XLP
937 select SYS_SUPPORTS_SMP
939 select SYS_SUPPORTS_32BIT_KERNEL
940 select SYS_SUPPORTS_64BIT_KERNEL
941 select ARCH_PHYS_ADDR_T_64BIT
942 select ARCH_REQUIRE_GPIOLIB
943 select SYS_SUPPORTS_BIG_ENDIAN
944 select SYS_SUPPORTS_LITTLE_ENDIAN
945 select SYS_SUPPORTS_HIGHMEM
947 select NR_CPUS_DEFAULT_32
951 select ZONE_DMA32 if 64BIT
953 select SYS_HAS_EARLY_PRINTK
955 select SYS_SUPPORTS_ZBOOT
956 select SYS_SUPPORTS_ZBOOT_UART16550
958 This board is based on Netlogic XLP Processor.
959 Say Y here if you have a XLP based board.
962 bool "Para-Virtualized guest system"
966 select SYS_SUPPORTS_64BIT_KERNEL
967 select SYS_SUPPORTS_32BIT_KERNEL
968 select SYS_SUPPORTS_BIG_ENDIAN
969 select SYS_SUPPORTS_SMP
970 select NR_CPUS_DEFAULT_4
971 select SYS_HAS_EARLY_PRINTK
972 select SYS_HAS_CPU_MIPS32_R2
973 select SYS_HAS_CPU_MIPS64_R2
974 select SYS_HAS_CPU_CAVIUM_OCTEON
978 This option supports guest running under ????
982 source "arch/mips/alchemy/Kconfig"
983 source "arch/mips/ath25/Kconfig"
984 source "arch/mips/ath79/Kconfig"
985 source "arch/mips/bcm47xx/Kconfig"
986 source "arch/mips/bcm63xx/Kconfig"
987 source "arch/mips/bmips/Kconfig"
988 source "arch/mips/jazz/Kconfig"
989 source "arch/mips/jz4740/Kconfig"
990 source "arch/mips/lantiq/Kconfig"
991 source "arch/mips/lasat/Kconfig"
992 source "arch/mips/pic32/Kconfig"
993 source "arch/mips/pistachio/Kconfig"
994 source "arch/mips/pmcs-msp71xx/Kconfig"
995 source "arch/mips/ralink/Kconfig"
996 source "arch/mips/sgi-ip27/Kconfig"
997 source "arch/mips/sibyte/Kconfig"
998 source "arch/mips/txx9/Kconfig"
999 source "arch/mips/vr41xx/Kconfig"
1000 source "arch/mips/cavium-octeon/Kconfig"
1001 source "arch/mips/loongson32/Kconfig"
1002 source "arch/mips/loongson64/Kconfig"
1003 source "arch/mips/netlogic/Kconfig"
1004 source "arch/mips/paravirt/Kconfig"
1005 source "arch/mips/xilfpga/Kconfig"
1009 config RWSEM_GENERIC_SPINLOCK
1013 config RWSEM_XCHGADD_ALGORITHM
1016 config ARCH_HAS_ILOG2_U32
1020 config ARCH_HAS_ILOG2_U64
1024 config GENERIC_HWEIGHT
1028 config GENERIC_CALIBRATE_DELAY
1032 config SCHED_OMIT_FRAME_POINTER
1037 # Select some configuration options automatically based on user selections.
1042 config ARCH_MAY_HAVE_PC_FDC
1078 config MIPS_CLOCK_VSYSCALL
1079 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1082 select ARCH_REQUIRE_GPIOLIB
1088 config ARCH_DMA_ADDR_T_64BIT
1089 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1091 config ARCH_SUPPORTS_UPROBES
1094 config DMA_MAYBE_COHERENT
1095 select DMA_NONCOHERENT
1101 config DMA_NONCOHERENT
1103 select NEED_DMA_MAP_STATE
1105 config NEED_DMA_MAP_STATE
1108 config SYS_HAS_EARLY_PRINTK
1112 bool "Support for hot-pluggable CPUs"
1113 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1115 Say Y here to allow turning CPUs off and on. CPUs can be
1116 controlled through /sys/devices/system/cpu.
1117 (Note: power management support will enable this option
1118 automatically on SMP systems. )
1119 Say N if you want to disable CPU hotplug.
1121 config SYS_SUPPORTS_HOTPLUG_CPU
1124 config MIPS_BONITO64
1139 config NO_IOPORT_MAP
1145 config GENERIC_ISA_DMA
1147 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1150 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1152 select GENERIC_ISA_DMA
1157 config HOLES_IN_ZONE
1161 # Endianness selection. Sufficiently obscure so many users don't know what to
1162 # answer,so we try hard to limit the available choices. Also the use of a
1163 # choice statement should be more obvious to the user.
1166 prompt "Endianness selection"
1168 Some MIPS machines can be configured for either little or big endian
1169 byte order. These modes require different kernels and a different
1170 Linux distribution. In general there is one preferred byteorder for a
1171 particular system but some systems are just as commonly used in the
1172 one or the other endianness.
1174 config CPU_BIG_ENDIAN
1176 depends on SYS_SUPPORTS_BIG_ENDIAN
1178 config CPU_LITTLE_ENDIAN
1179 bool "Little endian"
1180 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1187 config SYS_SUPPORTS_APM_EMULATION
1190 config SYS_SUPPORTS_BIG_ENDIAN
1193 config SYS_SUPPORTS_LITTLE_ENDIAN
1196 config SYS_SUPPORTS_HUGETLBFS
1198 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1201 config MIPS_HUGE_TLB_SUPPORT
1202 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1219 config PCI_GT64XXX_PCI0
1222 config NO_EXCEPT_FILL
1229 select DMA_NONCOHERENT
1231 select SWAP_IO_SPACE
1232 select SYS_HAS_CPU_R5500
1233 select SYS_SUPPORTS_32BIT_KERNEL
1234 select SYS_SUPPORTS_64BIT_KERNEL
1235 select SYS_SUPPORTS_BIG_ENDIAN
1242 select DMA_NONCOHERENT
1243 select SYS_HAS_CPU_MIPS32_R2
1244 select SYS_SUPPORTS_32BIT_KERNEL
1245 select SYS_SUPPORTS_LITTLE_ENDIAN
1246 select SYS_SUPPORTS_BIG_ENDIAN
1247 select SYS_SUPPORTS_MIPS16
1248 select CPU_MIPSR2_IRQ_VI
1257 config SWAP_IO_SPACE
1260 config SGI_HAS_INDYDOG
1272 config SGI_HAS_ZILOG
1275 config SGI_HAS_I8042
1278 config DEFAULT_SGI_PARTITION
1290 config MIPS_L1_CACHE_SHIFT_4
1293 config MIPS_L1_CACHE_SHIFT_5
1296 config MIPS_L1_CACHE_SHIFT_6
1299 config MIPS_L1_CACHE_SHIFT_7
1302 config MIPS_L1_CACHE_SHIFT
1304 default "7" if MIPS_L1_CACHE_SHIFT_7
1305 default "6" if MIPS_L1_CACHE_SHIFT_6
1306 default "5" if MIPS_L1_CACHE_SHIFT_5
1307 default "4" if MIPS_L1_CACHE_SHIFT_4
1310 config HAVE_STD_PC_SERIAL_PORT
1314 bool "ARC console support"
1315 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1319 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1324 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1333 menu "CPU selection"
1339 config CPU_LOONGSON3
1340 bool "Loongson 3 CPU"
1341 depends on SYS_HAS_CPU_LOONGSON3
1342 select CPU_SUPPORTS_64BIT_KERNEL
1343 select CPU_SUPPORTS_HIGHMEM
1344 select CPU_SUPPORTS_HUGEPAGES
1345 select WEAK_ORDERING
1346 select WEAK_REORDERING_BEYOND_LLSC
1347 select ARCH_REQUIRE_GPIOLIB
1349 The Loongson 3 processor implements the MIPS64R2 instruction
1350 set with many extensions.
1352 config CPU_LOONGSON2E
1354 depends on SYS_HAS_CPU_LOONGSON2E
1355 select CPU_LOONGSON2
1357 The Loongson 2E processor implements the MIPS III instruction set
1358 with many extensions.
1360 It has an internal FPGA northbridge, which is compatible to
1363 config CPU_LOONGSON2F
1365 depends on SYS_HAS_CPU_LOONGSON2F
1366 select CPU_LOONGSON2
1367 select ARCH_REQUIRE_GPIOLIB
1369 The Loongson 2F processor implements the MIPS III instruction set
1370 with many extensions.
1372 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1373 have a similar programming interface with FPGA northbridge used in
1376 config CPU_LOONGSON1B
1378 depends on SYS_HAS_CPU_LOONGSON1B
1379 select CPU_LOONGSON1
1381 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1382 release 2 instruction set.
1384 config CPU_MIPS32_R1
1385 bool "MIPS32 Release 1"
1386 depends on SYS_HAS_CPU_MIPS32_R1
1387 select CPU_HAS_PREFETCH
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select CPU_SUPPORTS_HIGHMEM
1391 Choose this option to build a kernel for release 1 or later of the
1392 MIPS32 architecture. Most modern embedded systems with a 32-bit
1393 MIPS processor are based on a MIPS32 processor. If you know the
1394 specific type of processor in your system, choose those that one
1395 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1396 Release 2 of the MIPS32 architecture is available since several
1397 years so chances are you even have a MIPS32 Release 2 processor
1398 in which case you should choose CPU_MIPS32_R2 instead for better
1401 config CPU_MIPS32_R2
1402 bool "MIPS32 Release 2"
1403 depends on SYS_HAS_CPU_MIPS32_R2
1404 select CPU_HAS_PREFETCH
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_HIGHMEM
1407 select CPU_SUPPORTS_MSA
1410 Choose this option to build a kernel for release 2 or later of the
1411 MIPS32 architecture. Most modern embedded systems with a 32-bit
1412 MIPS processor are based on a MIPS32 processor. If you know the
1413 specific type of processor in your system, choose those that one
1414 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1416 config CPU_MIPS32_R6
1417 bool "MIPS32 Release 6"
1418 depends on SYS_HAS_CPU_MIPS32_R6
1419 select CPU_HAS_PREFETCH
1420 select CPU_SUPPORTS_32BIT_KERNEL
1421 select CPU_SUPPORTS_HIGHMEM
1422 select CPU_SUPPORTS_MSA
1425 select MIPS_O32_FP64_SUPPORT
1427 Choose this option to build a kernel for release 6 or later of the
1428 MIPS32 architecture. New MIPS processors, starting with the Warrior
1429 family, are based on a MIPS32r6 processor. If you own an older
1430 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1432 config CPU_MIPS64_R1
1433 bool "MIPS64 Release 1"
1434 depends on SYS_HAS_CPU_MIPS64_R1
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_64BIT_KERNEL
1438 select CPU_SUPPORTS_HIGHMEM
1439 select CPU_SUPPORTS_HUGEPAGES
1441 Choose this option to build a kernel for release 1 or later of the
1442 MIPS64 architecture. Many modern embedded systems with a 64-bit
1443 MIPS processor are based on a MIPS64 processor. If you know the
1444 specific type of processor in your system, choose those that one
1445 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1446 Release 2 of the MIPS64 architecture is available since several
1447 years so chances are you even have a MIPS64 Release 2 processor
1448 in which case you should choose CPU_MIPS64_R2 instead for better
1451 config CPU_MIPS64_R2
1452 bool "MIPS64 Release 2"
1453 depends on SYS_HAS_CPU_MIPS64_R2
1454 select CPU_HAS_PREFETCH
1455 select CPU_SUPPORTS_32BIT_KERNEL
1456 select CPU_SUPPORTS_64BIT_KERNEL
1457 select CPU_SUPPORTS_HIGHMEM
1458 select CPU_SUPPORTS_HUGEPAGES
1459 select CPU_SUPPORTS_MSA
1461 Choose this option to build a kernel for release 2 or later of the
1462 MIPS64 architecture. Many modern embedded systems with a 64-bit
1463 MIPS processor are based on a MIPS64 processor. If you know the
1464 specific type of processor in your system, choose those that one
1465 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1467 config CPU_MIPS64_R6
1468 bool "MIPS64 Release 6"
1469 depends on SYS_HAS_CPU_MIPS64_R6
1470 select CPU_HAS_PREFETCH
1471 select CPU_SUPPORTS_32BIT_KERNEL
1472 select CPU_SUPPORTS_64BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_MSA
1476 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1478 Choose this option to build a kernel for release 6 or later of the
1479 MIPS64 architecture. New MIPS processors, starting with the Warrior
1480 family, are based on a MIPS64r6 processor. If you own an older
1481 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1485 depends on SYS_HAS_CPU_R3000
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1490 Please make sure to pick the right CPU type. Linux/MIPS is not
1491 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1492 *not* work on R4000 machines and vice versa. However, since most
1493 of the supported machines have an R4000 (or similar) CPU, R4x00
1494 might be a safe bet. If the resulting kernel does not work,
1495 try to recompile with R3000.
1499 depends on SYS_HAS_CPU_TX39XX
1500 select CPU_SUPPORTS_32BIT_KERNEL
1504 depends on SYS_HAS_CPU_VR41XX
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_64BIT_KERNEL
1508 The options selects support for the NEC VR4100 series of processors.
1509 Only choose this option if you have one of these processors as a
1510 kernel built with this option will not run on any other type of
1511 processor or vice versa.
1515 depends on SYS_HAS_CPU_R4300
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1519 MIPS Technologies R4300-series processors.
1523 depends on SYS_HAS_CPU_R4X00
1524 select CPU_SUPPORTS_32BIT_KERNEL
1525 select CPU_SUPPORTS_64BIT_KERNEL
1526 select CPU_SUPPORTS_HUGEPAGES
1528 MIPS Technologies R4000-series processors other than 4300, including
1529 the R4000, R4400, R4600, and 4700.
1533 depends on SYS_HAS_CPU_TX49XX
1534 select CPU_HAS_PREFETCH
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_64BIT_KERNEL
1537 select CPU_SUPPORTS_HUGEPAGES
1541 depends on SYS_HAS_CPU_R5000
1542 select CPU_SUPPORTS_32BIT_KERNEL
1543 select CPU_SUPPORTS_64BIT_KERNEL
1544 select CPU_SUPPORTS_HUGEPAGES
1546 MIPS Technologies R5000-series processors other than the Nevada.
1550 depends on SYS_HAS_CPU_R5432
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select CPU_SUPPORTS_64BIT_KERNEL
1553 select CPU_SUPPORTS_HUGEPAGES
1557 depends on SYS_HAS_CPU_R5500
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1560 select CPU_SUPPORTS_HUGEPAGES
1562 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1567 depends on SYS_HAS_CPU_R6000
1568 select CPU_SUPPORTS_32BIT_KERNEL
1570 MIPS Technologies R6000 and R6000A series processors. Note these
1571 processors are extremely rare and the support for them is incomplete.
1575 depends on SYS_HAS_CPU_NEVADA
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_64BIT_KERNEL
1578 select CPU_SUPPORTS_HUGEPAGES
1580 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1584 depends on SYS_HAS_CPU_R8000
1585 select CPU_HAS_PREFETCH
1586 select CPU_SUPPORTS_64BIT_KERNEL
1588 MIPS Technologies R8000 processors. Note these processors are
1589 uncommon and the support for them is incomplete.
1593 depends on SYS_HAS_CPU_R10000
1594 select CPU_HAS_PREFETCH
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HIGHMEM
1598 select CPU_SUPPORTS_HUGEPAGES
1600 MIPS Technologies R10000-series processors.
1604 depends on SYS_HAS_CPU_RM7000
1605 select CPU_HAS_PREFETCH
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HIGHMEM
1609 select CPU_SUPPORTS_HUGEPAGES
1613 depends on SYS_HAS_CPU_SB1
1614 select CPU_SUPPORTS_32BIT_KERNEL
1615 select CPU_SUPPORTS_64BIT_KERNEL
1616 select CPU_SUPPORTS_HIGHMEM
1617 select CPU_SUPPORTS_HUGEPAGES
1618 select WEAK_ORDERING
1620 config CPU_CAVIUM_OCTEON
1621 bool "Cavium Octeon processor"
1622 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1623 select CPU_HAS_PREFETCH
1624 select CPU_SUPPORTS_64BIT_KERNEL
1625 select WEAK_ORDERING
1626 select CPU_SUPPORTS_HIGHMEM
1627 select CPU_SUPPORTS_HUGEPAGES
1628 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1629 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1630 select MIPS_L1_CACHE_SHIFT_7
1632 The Cavium Octeon processor is a highly integrated chip containing
1633 many ethernet hardware widgets for networking tasks. The processor
1634 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1635 Full details can be found at http://www.caviumnetworks.com.
1638 bool "Broadcom BMIPS"
1639 depends on SYS_HAS_CPU_BMIPS
1641 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1642 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1643 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1644 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select DMA_NONCOHERENT
1648 select SWAP_IO_SPACE
1649 select WEAK_ORDERING
1650 select CPU_SUPPORTS_HIGHMEM
1651 select CPU_HAS_PREFETCH
1653 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1656 bool "Netlogic XLR SoC"
1657 depends on SYS_HAS_CPU_XLR
1658 select CPU_SUPPORTS_32BIT_KERNEL
1659 select CPU_SUPPORTS_64BIT_KERNEL
1660 select CPU_SUPPORTS_HIGHMEM
1661 select CPU_SUPPORTS_HUGEPAGES
1662 select WEAK_ORDERING
1663 select WEAK_REORDERING_BEYOND_LLSC
1665 Netlogic Microsystems XLR/XLS processors.
1668 bool "Netlogic XLP SoC"
1669 depends on SYS_HAS_CPU_XLP
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select WEAK_ORDERING
1674 select WEAK_REORDERING_BEYOND_LLSC
1675 select CPU_HAS_PREFETCH
1677 select CPU_SUPPORTS_HUGEPAGES
1679 Netlogic Microsystems XLP processors.
1682 config CPU_MIPS32_3_5_FEATURES
1683 bool "MIPS32 Release 3.5 Features"
1684 depends on SYS_HAS_CPU_MIPS32_R3_5
1685 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1687 Choose this option to build a kernel for release 2 or later of the
1688 MIPS32 architecture including features from the 3.5 release such as
1689 support for Enhanced Virtual Addressing (EVA).
1691 config CPU_MIPS32_3_5_EVA
1692 bool "Enhanced Virtual Addressing (EVA)"
1693 depends on CPU_MIPS32_3_5_FEATURES
1697 Choose this option if you want to enable the Enhanced Virtual
1698 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1699 One of its primary benefits is an increase in the maximum size
1700 of lowmem (up to 3GB). If unsure, say 'N' here.
1702 config CPU_MIPS32_R5_FEATURES
1703 bool "MIPS32 Release 5 Features"
1704 depends on SYS_HAS_CPU_MIPS32_R5
1705 depends on CPU_MIPS32_R2
1707 Choose this option to build a kernel for release 2 or later of the
1708 MIPS32 architecture including features from release 5 such as
1709 support for Extended Physical Addressing (XPA).
1711 config CPU_MIPS32_R5_XPA
1712 bool "Extended Physical Addressing (XPA)"
1713 depends on CPU_MIPS32_R5_FEATURES
1715 depends on !PAGE_SIZE_4KB
1716 depends on SYS_SUPPORTS_HIGHMEM
1719 select ARCH_PHYS_ADDR_T_64BIT
1722 Choose this option if you want to enable the Extended Physical
1723 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1724 benefit is to increase physical addressing equal to or greater
1725 than 40 bits. Note that this has the side effect of turning on
1726 64-bit addressing which in turn makes the PTEs 64-bit in size.
1727 If unsure, say 'N' here.
1730 config CPU_NOP_WORKAROUNDS
1733 config CPU_JUMP_WORKAROUNDS
1736 config CPU_LOONGSON2F_WORKAROUNDS
1737 bool "Loongson 2F Workarounds"
1739 select CPU_NOP_WORKAROUNDS
1740 select CPU_JUMP_WORKAROUNDS
1742 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1743 require workarounds. Without workarounds the system may hang
1744 unexpectedly. For more information please refer to the gas
1745 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1747 Loongson 2F03 and later have fixed these issues and no workarounds
1748 are needed. The workarounds have no significant side effect on them
1749 but may decrease the performance of the system so this option should
1750 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1753 If unsure, please say Y.
1754 endif # CPU_LOONGSON2F
1756 config SYS_SUPPORTS_ZBOOT
1758 select HAVE_KERNEL_GZIP
1759 select HAVE_KERNEL_BZIP2
1760 select HAVE_KERNEL_LZ4
1761 select HAVE_KERNEL_LZMA
1762 select HAVE_KERNEL_LZO
1763 select HAVE_KERNEL_XZ
1765 config SYS_SUPPORTS_ZBOOT_UART16550
1767 select SYS_SUPPORTS_ZBOOT
1769 config SYS_SUPPORTS_ZBOOT_UART_PROM
1771 select SYS_SUPPORTS_ZBOOT
1773 config CPU_LOONGSON2
1775 select CPU_SUPPORTS_32BIT_KERNEL
1776 select CPU_SUPPORTS_64BIT_KERNEL
1777 select CPU_SUPPORTS_HIGHMEM
1778 select CPU_SUPPORTS_HUGEPAGES
1780 config CPU_LOONGSON1
1784 select CPU_HAS_PREFETCH
1785 select CPU_SUPPORTS_32BIT_KERNEL
1786 select CPU_SUPPORTS_HIGHMEM
1787 select CPU_SUPPORTS_CPUFREQ
1789 config CPU_BMIPS32_3300
1790 select SMP_UP if SMP
1793 config CPU_BMIPS4350
1795 select SYS_SUPPORTS_SMP
1796 select SYS_SUPPORTS_HOTPLUG_CPU
1798 config CPU_BMIPS4380
1800 select MIPS_L1_CACHE_SHIFT_6
1801 select SYS_SUPPORTS_SMP
1802 select SYS_SUPPORTS_HOTPLUG_CPU
1804 config CPU_BMIPS5000
1806 select MIPS_CPU_SCACHE
1807 select MIPS_L1_CACHE_SHIFT_7
1808 select SYS_SUPPORTS_SMP
1809 select SYS_SUPPORTS_HOTPLUG_CPU
1811 config SYS_HAS_CPU_LOONGSON3
1813 select CPU_SUPPORTS_CPUFREQ
1815 config SYS_HAS_CPU_LOONGSON2E
1818 config SYS_HAS_CPU_LOONGSON2F
1820 select CPU_SUPPORTS_CPUFREQ
1821 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1822 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1824 config SYS_HAS_CPU_LOONGSON1B
1827 config SYS_HAS_CPU_MIPS32_R1
1830 config SYS_HAS_CPU_MIPS32_R2
1833 config SYS_HAS_CPU_MIPS32_R3_5
1836 config SYS_HAS_CPU_MIPS32_R5
1839 config SYS_HAS_CPU_MIPS32_R6
1842 config SYS_HAS_CPU_MIPS64_R1
1845 config SYS_HAS_CPU_MIPS64_R2
1848 config SYS_HAS_CPU_MIPS64_R6
1851 config SYS_HAS_CPU_R3000
1854 config SYS_HAS_CPU_TX39XX
1857 config SYS_HAS_CPU_VR41XX
1860 config SYS_HAS_CPU_R4300
1863 config SYS_HAS_CPU_R4X00
1866 config SYS_HAS_CPU_TX49XX
1869 config SYS_HAS_CPU_R5000
1872 config SYS_HAS_CPU_R5432
1875 config SYS_HAS_CPU_R5500
1878 config SYS_HAS_CPU_R6000
1881 config SYS_HAS_CPU_NEVADA
1884 config SYS_HAS_CPU_R8000
1887 config SYS_HAS_CPU_R10000
1890 config SYS_HAS_CPU_RM7000
1893 config SYS_HAS_CPU_SB1
1896 config SYS_HAS_CPU_CAVIUM_OCTEON
1899 config SYS_HAS_CPU_BMIPS
1902 config SYS_HAS_CPU_BMIPS32_3300
1904 select SYS_HAS_CPU_BMIPS
1906 config SYS_HAS_CPU_BMIPS4350
1908 select SYS_HAS_CPU_BMIPS
1910 config SYS_HAS_CPU_BMIPS4380
1912 select SYS_HAS_CPU_BMIPS
1914 config SYS_HAS_CPU_BMIPS5000
1916 select SYS_HAS_CPU_BMIPS
1918 config SYS_HAS_CPU_XLR
1921 config SYS_HAS_CPU_XLP
1924 config MIPS_MALTA_PM
1925 depends on MIPS_MALTA
1931 # CPU may reorder R->R, R->W, W->R, W->W
1932 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1934 config WEAK_ORDERING
1938 # CPU may reorder reads and writes beyond LL/SC
1939 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1941 config WEAK_REORDERING_BEYOND_LLSC
1946 # These two indicate any level of the MIPS32 and MIPS64 architecture
1950 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1954 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1957 # These two indicate the revision of the architecture, either Release 1 or Release 2
1961 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1965 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1970 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1979 config SYS_SUPPORTS_32BIT_KERNEL
1981 config SYS_SUPPORTS_64BIT_KERNEL
1983 config CPU_SUPPORTS_32BIT_KERNEL
1985 config CPU_SUPPORTS_64BIT_KERNEL
1987 config CPU_SUPPORTS_CPUFREQ
1989 config CPU_SUPPORTS_ADDRWINCFG
1991 config CPU_SUPPORTS_HUGEPAGES
1993 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1995 config MIPS_PGD_C0_CONTEXT
1997 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2000 # Set to y for ptrace access to watch registers.
2002 config HARDWARE_WATCHPOINTS
2004 default y if CPU_MIPSR1 || CPU_MIPSR2
2009 prompt "Kernel code model"
2011 You should only select this option if you have a workload that
2012 actually benefits from 64-bit processing or if your machine has
2013 large memory. You will only be presented a single option in this
2014 menu if your system does not support both 32-bit and 64-bit kernels.
2017 bool "32-bit kernel"
2018 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2021 Select this option if you want to build a 32-bit kernel.
2024 bool "64-bit kernel"
2025 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2027 Select this option if you want to build a 64-bit kernel.
2032 bool "KVM Guest Kernel"
2033 depends on BROKEN_ON_SMP
2035 Select this option if building a guest kernel for KVM (Trap & Emulate)
2038 config KVM_GUEST_TIMER_FREQ
2039 int "Count/Compare Timer Frequency (MHz)"
2040 depends on KVM_GUEST
2043 Set this to non-zero if building a guest kernel for KVM to skip RTC
2044 emulation when determining guest CPU Frequency. Instead, the guest's
2045 timer frequency is specified directly.
2048 prompt "Kernel page size"
2049 default PAGE_SIZE_4KB
2051 config PAGE_SIZE_4KB
2053 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2055 This option select the standard 4kB Linux page size. On some
2056 R3000-family processors this is the only available page size. Using
2057 4kB page size will minimize memory consumption and is therefore
2058 recommended for low memory systems.
2060 config PAGE_SIZE_8KB
2062 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2064 Using 8kB page size will result in higher performance kernel at
2065 the price of higher memory consumption. This option is available
2066 only on R8000 and cnMIPS processors. Note that you will need a
2067 suitable Linux distribution to support this.
2069 config PAGE_SIZE_16KB
2071 depends on !CPU_R3000 && !CPU_TX39XX
2073 Using 16kB page size will result in higher performance kernel at
2074 the price of higher memory consumption. This option is available on
2075 all non-R3000 family processors. Note that you will need a suitable
2076 Linux distribution to support this.
2078 config PAGE_SIZE_32KB
2080 depends on CPU_CAVIUM_OCTEON
2082 Using 32kB page size will result in higher performance kernel at
2083 the price of higher memory consumption. This option is available
2084 only on cnMIPS cores. Note that you will need a suitable Linux
2085 distribution to support this.
2087 config PAGE_SIZE_64KB
2089 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2091 Using 64kB page size will result in higher performance kernel at
2092 the price of higher memory consumption. This option is available on
2093 all non-R3000 family processor. Not that at the time of this
2094 writing this option is still high experimental.
2098 config FORCE_MAX_ZONEORDER
2099 int "Maximum zone order"
2100 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2101 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2102 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2103 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2104 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2105 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2109 The kernel memory allocator divides physically contiguous memory
2110 blocks into "zones", where each zone is a power of two number of
2111 pages. This option selects the largest power of two that the kernel
2112 keeps in the memory allocator. If you need to allocate very large
2113 blocks of physically contiguous memory, then you may need to
2114 increase this value.
2116 This config option is actually maximum order plus one. For example,
2117 a value of 11 means that the largest free memory block is 2^10 pages.
2119 The page size is not necessarily 4KB. Keep this in mind
2120 when choosing a value for this option.
2125 config IP22_CPU_SCACHE
2130 # Support for a MIPS32 / MIPS64 style S-caches
2132 config MIPS_CPU_SCACHE
2136 config R5000_CPU_SCACHE
2140 config RM7000_CPU_SCACHE
2144 config SIBYTE_DMA_PAGEOPS
2145 bool "Use DMA to clear/copy pages"
2148 Instead of using the CPU to zero and copy pages, use a Data Mover
2149 channel. These DMA channels are otherwise unused by the standard
2150 SiByte Linux port. Seems to give a small performance benefit.
2152 config CPU_HAS_PREFETCH
2155 config CPU_GENERIC_DUMP_TLB
2157 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2161 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2163 config CPU_R4K_CACHE_TLB
2165 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2168 bool "MIPS MT SMP support (1 TC on each available VPE)"
2169 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2170 select CPU_MIPSR2_IRQ_VI
2171 select CPU_MIPSR2_IRQ_EI
2176 select SYS_SUPPORTS_SMP
2177 select SYS_SUPPORTS_SCHED_SMT
2178 select MIPS_PERF_SHARED_TC_COUNTERS
2180 This is a kernel model which is known as SMVP. This is supported
2181 on cores with the MT ASE and uses the available VPEs to implement
2182 virtual processors which supports SMP. This is equivalent to the
2183 Intel Hyperthreading feature. For further information go to
2184 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2190 bool "SMT (multithreading) scheduler support"
2191 depends on SYS_SUPPORTS_SCHED_SMT
2194 SMT scheduler support improves the CPU scheduler's decision making
2195 when dealing with MIPS MT enabled cores at a cost of slightly
2196 increased overhead in some places. If unsure say N here.
2198 config SYS_SUPPORTS_SCHED_SMT
2201 config SYS_SUPPORTS_MULTITHREADING
2204 config MIPS_MT_FPAFF
2205 bool "Dynamic FPU affinity for FP-intensive threads"
2207 depends on MIPS_MT_SMP
2209 config MIPSR2_TO_R6_EMULATOR
2210 bool "MIPS R2-to-R6 emulator"
2211 depends on CPU_MIPSR6 && !SMP
2214 Choose this option if you want to run non-R6 MIPS userland code.
2215 Even if you say 'Y' here, the emulator will still be disabled by
2216 default. You can enable it using the 'mipsr2emu' kernel option.
2217 The only reason this is a build-time option is to save ~14K from the
2219 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2220 depends on SMP && CPU_MIPSR6
2222 config MIPS_VPE_LOADER
2223 bool "VPE loader support."
2224 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2225 select CPU_MIPSR2_IRQ_VI
2226 select CPU_MIPSR2_IRQ_EI
2229 Includes a loader for loading an elf relocatable object
2230 onto another VPE and running it.
2232 config MIPS_VPE_LOADER_CMP
2235 depends on MIPS_VPE_LOADER && MIPS_CMP
2237 config MIPS_VPE_LOADER_MT
2240 depends on MIPS_VPE_LOADER && !MIPS_CMP
2242 config MIPS_VPE_LOADER_TOM
2243 bool "Load VPE program into memory hidden from linux"
2244 depends on MIPS_VPE_LOADER
2247 The loader can use memory that is present but has been hidden from
2248 Linux using the kernel command line option "mem=xxMB". It's up to
2249 you to ensure the amount you put in the option and the space your
2250 program requires is less or equal to the amount physically present.
2252 config MIPS_VPE_APSP_API
2253 bool "Enable support for AP/SP API (RTLX)"
2254 depends on MIPS_VPE_LOADER
2257 config MIPS_VPE_APSP_API_CMP
2260 depends on MIPS_VPE_APSP_API && MIPS_CMP
2262 config MIPS_VPE_APSP_API_MT
2265 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2268 bool "MIPS CMP framework support (DEPRECATED)"
2269 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2272 select SYS_SUPPORTS_SMP
2273 select WEAK_ORDERING
2276 Select this if you are using a bootloader which implements the "CMP
2277 framework" protocol (ie. YAMON) and want your kernel to make use of
2278 its ability to start secondary CPUs.
2280 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2284 bool "MIPS Coherent Processing System support"
2285 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2288 select MIPS_CPS_PM if HOTPLUG_CPU
2290 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2291 select SYS_SUPPORTS_HOTPLUG_CPU
2292 select SYS_SUPPORTS_SMP
2293 select WEAK_ORDERING
2295 Select this if you wish to run an SMP kernel across multiple cores
2296 within a MIPS Coherent Processing System. When this option is
2297 enabled the kernel will probe for other cores and boot them with
2298 no external assistance. It is safe to enable this when hardware
2299 support is unavailable.
2312 config SB1_PASS_2_WORKAROUNDS
2314 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2317 config SB1_PASS_2_1_WORKAROUNDS
2319 depends on CPU_SB1 && CPU_SB1_PASS_2
2323 config ARCH_PHYS_ADDR_T_64BIT
2327 prompt "SmartMIPS or microMIPS ASE support"
2329 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2332 Select this if you want neither microMIPS nor SmartMIPS support
2334 config CPU_HAS_SMARTMIPS
2335 depends on SYS_SUPPORTS_SMARTMIPS
2338 SmartMIPS is a extension of the MIPS32 architecture aimed at
2339 increased security at both hardware and software level for
2340 smartcards. Enabling this option will allow proper use of the
2341 SmartMIPS instructions by Linux applications. However a kernel with
2342 this option will not work on a MIPS core without SmartMIPS core. If
2343 you don't know you probably don't have SmartMIPS and should say N
2346 config CPU_MICROMIPS
2347 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2350 When this option is enabled the kernel will be built using the
2356 bool "Support for the MIPS SIMD Architecture"
2357 depends on CPU_SUPPORTS_MSA
2358 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2360 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2361 and a set of SIMD instructions to operate on them. When this option
2362 is enabled the kernel will support allocating & switching MSA
2363 vector register contexts. If you know that your kernel will only be
2364 running on CPUs which do not support MSA or that your userland will
2365 not be making use of it then you may wish to say N here to reduce
2366 the size & complexity of your kernel.
2377 # Vectored interrupt mode is an R2 feature
2379 config CPU_MIPSR2_IRQ_VI
2383 # Extended interrupt mode is an R2 feature
2385 config CPU_MIPSR2_IRQ_EI
2390 depends on !CPU_R3000
2396 config CPU_DADDI_WORKAROUNDS
2399 config CPU_R4000_WORKAROUNDS
2401 select CPU_R4400_WORKAROUNDS
2403 config CPU_R4400_WORKAROUNDS
2407 # - Highmem only makes sense for the 32-bit kernel.
2408 # - The current highmem code will only work properly on physically indexed
2409 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2410 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2411 # moment we protect the user and offer the highmem option only on machines
2412 # where it's known to be safe. This will not offer highmem on a few systems
2413 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2414 # indexed CPUs but we're playing safe.
2415 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2416 # know they might have memory configurations that could make use of highmem
2420 bool "High Memory Support"
2421 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2423 config CPU_SUPPORTS_HIGHMEM
2426 config SYS_SUPPORTS_HIGHMEM
2429 config SYS_SUPPORTS_SMARTMIPS
2432 config SYS_SUPPORTS_MICROMIPS
2435 config SYS_SUPPORTS_MIPS16
2438 This option must be set if a kernel might be executed on a MIPS16-
2439 enabled CPU even if MIPS16 is not actually being used. In other
2440 words, it makes the kernel MIPS16-tolerant.
2442 config CPU_SUPPORTS_MSA
2445 config ARCH_FLATMEM_ENABLE
2447 depends on !NUMA && !CPU_LOONGSON2
2449 config ARCH_DISCONTIGMEM_ENABLE
2451 default y if SGI_IP27
2453 Say Y to support efficient handling of discontiguous physical memory,
2454 for architectures which are either NUMA (Non-Uniform Memory Access)
2455 or have huge holes in the physical address space for other reasons.
2456 See <file:Documentation/vm/numa> for more.
2458 config ARCH_SPARSEMEM_ENABLE
2460 select SPARSEMEM_STATIC
2464 depends on SYS_SUPPORTS_NUMA
2466 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2467 Access). This option improves performance on systems with more
2468 than two nodes; on two node systems it is generally better to
2469 leave it disabled; on single node systems disable this option
2472 config SYS_SUPPORTS_NUMA
2478 depends on NEED_MULTIPLE_NODES
2480 config HW_PERF_EVENTS
2481 bool "Enable hardware performance counter support for perf events"
2482 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2485 Enable hardware performance counter support for perf events. If
2486 disabled, perf events will use software events only.
2491 bool "Multi-Processing support"
2492 depends on SYS_SUPPORTS_SMP
2494 This enables support for systems with more than one CPU. If you have
2495 a system with only one CPU, say N. If you have a system with more
2496 than one CPU, say Y.
2498 If you say N here, the kernel will run on uni- and multiprocessor
2499 machines, but will use only one CPU of a multiprocessor machine. If
2500 you say Y here, the kernel will run on many, but not all,
2501 uniprocessor machines. On a uniprocessor machine, the kernel
2502 will run faster if you say N here.
2504 People using multiprocessor machines who say Y here should also say
2505 Y to "Enhanced Real Time Clock Support", below.
2507 See also the SMP-HOWTO available at
2508 <http://www.tldp.org/docs.html#howto>.
2510 If you don't know what to do here, say N.
2515 config SYS_SUPPORTS_MIPS_CMP
2518 config SYS_SUPPORTS_MIPS_CPS
2521 config SYS_SUPPORTS_SMP
2524 config NR_CPUS_DEFAULT_4
2527 config NR_CPUS_DEFAULT_8
2530 config NR_CPUS_DEFAULT_16
2533 config NR_CPUS_DEFAULT_32
2536 config NR_CPUS_DEFAULT_64
2540 int "Maximum number of CPUs (2-256)"
2543 default "4" if NR_CPUS_DEFAULT_4
2544 default "8" if NR_CPUS_DEFAULT_8
2545 default "16" if NR_CPUS_DEFAULT_16
2546 default "32" if NR_CPUS_DEFAULT_32
2547 default "64" if NR_CPUS_DEFAULT_64
2549 This allows you to specify the maximum number of CPUs which this
2550 kernel will support. The maximum supported value is 32 for 32-bit
2551 kernel and 64 for 64-bit kernels; the minimum value which makes
2552 sense is 1 for Qemu (useful only for kernel debugging purposes)
2553 and 2 for all others.
2555 This is purely to save memory - each supported CPU adds
2556 approximately eight kilobytes to the kernel image. For best
2557 performance should round up your number of processors to the next
2560 config MIPS_PERF_SHARED_TC_COUNTERS
2564 # Timer Interrupt Frequency Configuration
2568 prompt "Timer frequency"
2571 Allows the configuration of the timer frequency.
2574 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2577 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2580 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2583 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2586 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2589 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2592 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2595 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2599 config SYS_SUPPORTS_24HZ
2602 config SYS_SUPPORTS_48HZ
2605 config SYS_SUPPORTS_100HZ
2608 config SYS_SUPPORTS_128HZ
2611 config SYS_SUPPORTS_250HZ
2614 config SYS_SUPPORTS_256HZ
2617 config SYS_SUPPORTS_1000HZ
2620 config SYS_SUPPORTS_1024HZ
2623 config SYS_SUPPORTS_ARBIT_HZ
2625 default y if !SYS_SUPPORTS_24HZ && \
2626 !SYS_SUPPORTS_48HZ && \
2627 !SYS_SUPPORTS_100HZ && \
2628 !SYS_SUPPORTS_128HZ && \
2629 !SYS_SUPPORTS_250HZ && \
2630 !SYS_SUPPORTS_256HZ && \
2631 !SYS_SUPPORTS_1000HZ && \
2632 !SYS_SUPPORTS_1024HZ
2638 default 100 if HZ_100
2639 default 128 if HZ_128
2640 default 250 if HZ_250
2641 default 256 if HZ_256
2642 default 1000 if HZ_1000
2643 default 1024 if HZ_1024
2646 def_bool HIGH_RES_TIMERS
2648 source "kernel/Kconfig.preempt"
2651 bool "Kexec system call"
2654 kexec is a system call that implements the ability to shutdown your
2655 current kernel, and to start another kernel. It is like a reboot
2656 but it is independent of the system firmware. And like a reboot
2657 you can start any kernel with it, not just Linux.
2659 The name comes from the similarity to the exec system call.
2661 It is an ongoing process to be certain the hardware in a machine
2662 is properly shutdown, so do not be surprised if this code does not
2663 initially work for you. As of this writing the exact hardware
2664 interface is strongly in flux, so no good recommendation can be
2668 bool "Kernel crash dumps"
2670 Generate crash dump after being started by kexec.
2671 This should be normally only set in special crash dump kernels
2672 which are loaded in the main kernel with kexec-tools into
2673 a specially reserved region and then later executed after
2674 a crash by kdump/kexec. The crash dump kernel must be compiled
2675 to a memory address not used by the main kernel or firmware using
2678 config PHYSICAL_START
2679 hex "Physical address where the kernel is loaded"
2680 default "0xffffffff84000000" if 64BIT
2681 default "0x84000000" if 32BIT
2682 depends on CRASH_DUMP
2684 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2685 If you plan to use kernel for capturing the crash dump change
2686 this value to start of the reserved region (the "X" value as
2687 specified in the "crashkernel=YM@XM" command line boot parameter
2688 passed to the panic-ed kernel).
2691 bool "Enable seccomp to safely compute untrusted bytecode"
2695 This kernel feature is useful for number crunching applications
2696 that may need to compute untrusted bytecode during their
2697 execution. By using pipes or other transports made available to
2698 the process as file descriptors supporting the read/write
2699 syscalls, it's possible to isolate those applications in
2700 their own address space using seccomp. Once seccomp is
2701 enabled via /proc/<pid>/seccomp, it cannot be disabled
2702 and the task is only allowed to execute a few safe syscalls
2703 defined by each seccomp mode.
2705 If unsure, say Y. Only embedded should say N here.
2707 config MIPS_O32_FP64_SUPPORT
2708 bool "Support for O32 binaries using 64-bit FP"
2709 depends on 32BIT || MIPS32_O32
2711 When this is enabled, the kernel will support use of 64-bit floating
2712 point registers with binaries using the O32 ABI along with the
2713 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2714 32-bit MIPS systems this support is at the cost of increasing the
2715 size and complexity of the compiled FPU emulator. Thus if you are
2716 running a MIPS32 system and know that none of your userland binaries
2717 will require 64-bit floating point, you may wish to reduce the size
2718 of your kernel & potentially improve FP emulation performance by
2721 Although binutils currently supports use of this flag the details
2722 concerning its effect upon the O32 ABI in userland are still being
2723 worked on. In order to avoid userland becoming dependant upon current
2724 behaviour before the details have been finalised, this option should
2725 be considered experimental and only enabled by those working upon
2733 select OF_EARLY_FLATTREE
2740 prompt "Kernel appended dtb support" if USE_OF
2741 default MIPS_NO_APPENDED_DTB
2743 config MIPS_NO_APPENDED_DTB
2746 Do not enable appended dtb support.
2748 config MIPS_ELF_APPENDED_DTB
2751 With this option, the boot code will look for a device tree binary
2752 DTB) included in the vmlinux ELF section .appended_dtb. By default
2753 it is empty and the DTB can be appended using binutils command
2756 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2758 This is meant as a backward compatiblity convenience for those
2759 systems with a bootloader that can't be upgraded to accommodate
2760 the documented boot protocol using a device tree.
2762 config MIPS_RAW_APPENDED_DTB
2765 With this option, the boot code will look for a device tree binary
2766 DTB) appended to raw vmlinux.bin (without decompressor).
2767 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2769 This is meant as a backward compatibility convenience for those
2770 systems with a bootloader that can't be upgraded to accommodate
2771 the documented boot protocol using a device tree.
2773 Beware that there is very little in terms of protection against
2774 this option being confused by leftover garbage in memory that might
2775 look like a DTB header after a reboot if no actual DTB is appended
2776 to vmlinux.bin. Do not leave this option active in a production kernel
2777 if you don't intend to always append a DTB.
2779 config MIPS_ZBOOT_APPENDED_DTB
2781 depends on SYS_SUPPORTS_ZBOOT
2783 With this option, the boot code will look for a device tree binary
2784 DTB) appended to raw vmlinuz.bin (with decompressor).
2785 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2787 This is meant as a backward compatibility convenience for those
2788 systems with a bootloader that can't be upgraded to accommodate
2789 the documented boot protocol using a device tree.
2791 Beware that there is very little in terms of protection against
2792 this option being confused by leftover garbage in memory that might
2793 look like a DTB header after a reboot if no actual DTB is appended
2794 to vmlinuz.bin. Do not leave this option active in a production kernel
2795 if you don't intend to always append a DTB.
2799 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2800 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2801 !MIPS_MALTA && !MIPS_SEAD3 && \
2803 default MIPS_CMDLINE_FROM_BOOTLOADER
2805 config MIPS_CMDLINE_FROM_DTB
2807 bool "Dtb kernel arguments if available"
2809 config MIPS_CMDLINE_DTB_EXTEND
2811 bool "Extend dtb kernel arguments with bootloader arguments"
2813 config MIPS_CMDLINE_FROM_BOOTLOADER
2814 bool "Bootloader kernel arguments if available"
2819 config LOCKDEP_SUPPORT
2823 config STACKTRACE_SUPPORT
2827 config HAVE_LATENCYTOP_SUPPORT
2831 config PGTABLE_LEVELS
2833 default 3 if 64BIT && !PAGE_SIZE_64KB
2836 source "init/Kconfig"
2838 source "kernel/Kconfig.freezer"
2840 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2848 bool "Support for PCI controller"
2849 depends on HW_HAS_PCI
2851 select NO_GENERIC_PCI_IOPORT_MAP
2853 Find out whether you have a PCI motherboard. PCI is the name of a
2854 bus system, i.e. the way the CPU talks to the other stuff inside
2855 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2859 bool "Support for HT-linked PCI"
2861 depends on CPU_LOONGSON3
2865 Loongson family machines use Hyper-Transport bus for inter-core
2866 connection and device connection. The PCI bus is a subordinate
2867 linked at HT. Choose Y for Loongson-3 based machines.
2872 source "drivers/pci/Kconfig"
2875 # ISA support is now enabled via select. Too many systems still have the one
2876 # or other ISA chip on the board that users don't know about so don't expect
2877 # users to choose the right thing ...
2884 depends on HW_HAS_EISA
2886 select GENERIC_ISA_DMA
2888 The Extended Industry Standard Architecture (EISA) bus was
2889 developed as an open alternative to the IBM MicroChannel bus.
2891 The EISA bus provided some of the features of the IBM MicroChannel
2892 bus while maintaining backward compatibility with cards made for
2893 the older ISA bus. The EISA bus saw limited use between 1988 and
2894 1995 when it was made obsolete by the PCI bus.
2896 Say Y here if you are building a kernel for an EISA-based machine.
2900 source "drivers/eisa/Kconfig"
2903 bool "TURBOchannel support"
2904 depends on MACH_DECSTATION
2906 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2907 processors. TURBOchannel programming specifications are available
2909 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2911 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2912 Linux driver support status is documented at:
2913 <http://www.linux-mips.org/wiki/DECstation>
2923 select MIPS_EXTERNAL_TIMER
2931 source "drivers/pcmcia/Kconfig"
2934 tristate "RapidIO support"
2938 If you say Y here, the kernel will include drivers and
2939 infrastructure code to support RapidIO interconnect devices.
2941 source "drivers/rapidio/Kconfig"
2945 menu "Executable file formats"
2947 source "fs/Kconfig.binfmt"
2952 config MIPS32_COMPAT
2958 config SYSVIPC_COMPAT
2962 bool "Kernel support for o32 binaries"
2964 select ARCH_WANT_OLD_COMPAT_IPC
2966 select MIPS32_COMPAT
2967 select SYSVIPC_COMPAT if SYSVIPC
2969 Select this option if you want to run o32 binaries. These are pure
2970 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2971 existing binaries are in this format.
2976 bool "Kernel support for n32 binaries"
2979 select MIPS32_COMPAT
2980 select SYSVIPC_COMPAT if SYSVIPC
2982 Select this option if you want to run n32 binaries. These are
2983 64-bit binaries using 32-bit quantities for addressing and certain
2984 data that would normally be 64-bit. They are used in special
2991 default y if MIPS32_O32 || MIPS32_N32
2995 menu "Power management options"
2997 config ARCH_HIBERNATION_POSSIBLE
2999 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3001 config ARCH_SUSPEND_POSSIBLE
3003 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3005 source "kernel/power/Kconfig"
3009 config MIPS_EXTERNAL_TIMER
3012 menu "CPU Power Management"
3014 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3015 source "drivers/cpufreq/Kconfig"
3018 source "drivers/cpuidle/Kconfig"
3022 source "net/Kconfig"
3024 source "drivers/Kconfig"
3026 source "drivers/firmware/Kconfig"
3030 source "arch/mips/Kconfig.debug"
3032 source "security/Kconfig"
3034 source "crypto/Kconfig"
3036 source "lib/Kconfig"
3038 source "arch/mips/kvm/Kconfig"