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
12 select HAVE_IRQ_EXIT_ON_IRQ_STACK
14 select HAVE_PERF_EVENTS
15 select PERF_USE_VMALLOC
17 select HAVE_ARCH_MMAP_RND_BITS if MMU
18 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
19 select HAVE_ARCH_SECCOMP_FILTER
20 select HAVE_ARCH_TRACEHOOK
21 select HAVE_CBPF_JIT if !CPU_MICROMIPS
22 select HAVE_FUNCTION_TRACER
23 select HAVE_DYNAMIC_FTRACE
24 select HAVE_FTRACE_MCOUNT_RECORD
25 select HAVE_C_RECORDMCOUNT
26 select HAVE_FUNCTION_GRAPH_TRACER
28 select HAVE_KRETPROBES
29 select HAVE_SYSCALL_TRACEPOINTS
30 select HAVE_DEBUG_KMEMLEAK
31 select HAVE_SYSCALL_TRACEPOINTS
32 select ARCH_HAS_ELF_RANDOMIZE
33 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
34 select RTC_LIB if !MACH_LOONGSON64
35 select GENERIC_ATOMIC64 if !64BIT
36 select HAVE_DMA_CONTIGUOUS
37 select HAVE_DMA_API_DEBUG
38 select GENERIC_IRQ_PROBE
39 select GENERIC_IRQ_SHOW
40 select GENERIC_PCI_IOMAP
41 select HAVE_ARCH_JUMP_LABEL
42 select ARCH_WANT_IPC_PARSE_VERSION
43 select IRQ_FORCED_THREADING
45 select HAVE_MEMBLOCK_NODE_MAP
46 select ARCH_DISCARD_MEMBLOCK
47 select GENERIC_SMP_IDLE_THREAD
48 select BUILDTIME_EXTABLE_SORT
49 select GENERIC_CLOCKEVENTS
50 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
51 select GENERIC_CMOS_UPDATE
52 select HAVE_MOD_ARCH_SPECIFIC
55 select MODULES_USE_ELF_REL if MODULES
56 select MODULES_USE_ELF_RELA if MODULES && 64BIT
57 select CLONE_BACKWARDS
58 select HAVE_DEBUG_STACKOVERFLOW
59 select HAVE_CC_STACKPROTECTOR
60 select CPU_PM if CPU_IDLE
61 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
62 select ARCH_BINFMT_ELF_STATE
63 select SYSCTL_EXCEPTION_TRACE
64 select HAVE_VIRT_CPU_ACCOUNTING_GEN
65 select HAVE_IRQ_TIME_ACCOUNTING
66 select GENERIC_TIME_VSYSCALL
67 select ARCH_CLOCKSOURCE_DATA
68 select HANDLE_DOMAIN_IRQ
69 select HAVE_EXIT_THREAD
70 select HAVE_REGS_AND_STACK_ACCESS_API
72 menu "Machine selection"
79 bool "Generic board-agnostic MIPS kernel"
83 select CLKSRC_MIPS_GIC
85 select CPU_MIPSR2_IRQ_VI
86 select CPU_MIPSR2_IRQ_EI
88 select DMA_PERDEV_COHERENT
92 select MIPS_CPU_SCACHE
94 select MIPS_L1_CACHE_SHIFT_7
96 select PCI_DRIVERS_GENERIC
100 select SYS_HAS_CPU_MIPS32_R1
101 select SYS_HAS_CPU_MIPS32_R2
102 select SYS_HAS_CPU_MIPS32_R6
103 select SYS_HAS_CPU_MIPS64_R1
104 select SYS_HAS_CPU_MIPS64_R2
105 select SYS_HAS_CPU_MIPS64_R6
106 select SYS_SUPPORTS_32BIT_KERNEL
107 select SYS_SUPPORTS_64BIT_KERNEL
108 select SYS_SUPPORTS_BIG_ENDIAN
109 select SYS_SUPPORTS_HIGHMEM
110 select SYS_SUPPORTS_LITTLE_ENDIAN
111 select SYS_SUPPORTS_MICROMIPS
112 select SYS_SUPPORTS_MIPS_CPS
113 select SYS_SUPPORTS_MIPS16
114 select SYS_SUPPORTS_MULTITHREADING
115 select SYS_SUPPORTS_RELOCATABLE
116 select SYS_SUPPORTS_SMARTMIPS
117 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
118 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
119 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
120 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
121 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
122 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
125 Select this to build a kernel which aims to support multiple boards,
126 generally using a flattened device tree passed from the bootloader
127 using the boot protocol defined in the UHI (Unified Hosting
128 Interface) specification.
131 bool "Alchemy processor based machines"
132 select ARCH_PHYS_ADDR_T_64BIT
136 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
137 select SYS_HAS_CPU_MIPS32_R1
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_APM_EMULATION
141 select SYS_SUPPORTS_ZBOOT
145 bool "Texas Instruments AR7"
147 select DMA_NONCOHERENT
151 select NO_EXCEPT_FILL
153 select SYS_HAS_CPU_MIPS32_R1
154 select SYS_HAS_EARLY_PRINTK
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_MIPS16
158 select SYS_SUPPORTS_ZBOOT_UART16550
163 Support for the Texas Instruments AR7 System-on-a-Chip
164 family: TNETD7100, 7200 and 7300.
167 bool "Atheros AR231x/AR531x SoC support"
170 select DMA_NONCOHERENT
173 select SYS_HAS_CPU_MIPS32_R1
174 select SYS_SUPPORTS_BIG_ENDIAN
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_HAS_EARLY_PRINTK
178 Support for Atheros AR231x and Atheros AR531x based boards
181 bool "Atheros AR71XX/AR724X/AR913X based boards"
182 select ARCH_HAS_RESET_CONTROLLER
186 select DMA_NONCOHERENT
193 select SYS_HAS_CPU_MIPS32_R2
194 select SYS_HAS_EARLY_PRINTK
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_BIG_ENDIAN
197 select SYS_SUPPORTS_MIPS16
198 select SYS_SUPPORTS_ZBOOT_UART_PROM
201 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
204 bool "Broadcom Generic BMIPS kernel"
206 select NO_EXCEPT_FILL
212 select BCM6345_L1_IRQ
213 select BCM7038_L1_IRQ
214 select BCM7120_L2_IRQ
215 select BRCMSTB_L2_IRQ
217 select DMA_NONCOHERENT
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_LITTLE_ENDIAN
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_HIGHMEM
222 select SYS_HAS_CPU_BMIPS32_3300
223 select SYS_HAS_CPU_BMIPS4350
224 select SYS_HAS_CPU_BMIPS4380
225 select SYS_HAS_CPU_BMIPS5000
227 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
228 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
229 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
230 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
232 Build a generic DT-based kernel image that boots on select
233 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
234 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
235 must be set appropriately for your board.
238 bool "Broadcom BCM47XX based boards"
242 select DMA_NONCOHERENT
245 select SYS_HAS_CPU_MIPS32_R1
246 select NO_EXCEPT_FILL
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_LITTLE_ENDIAN
249 select SYS_SUPPORTS_MIPS16
250 select SYS_HAS_EARLY_PRINTK
251 select USE_GENERIC_EARLY_PRINTK_8250
253 select LEDS_GPIO_REGISTER
257 Support for BCM47XX based boards
260 bool "Broadcom BCM63XX based boards"
265 select DMA_NONCOHERENT
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_BIG_ENDIAN
269 select SYS_HAS_EARLY_PRINTK
273 select MIPS_L1_CACHE_SHIFT_4
275 Support for BCM63XX based boards
282 select DMA_NONCOHERENT
288 select PCI_GT64XXX_PCI0
290 select SYS_HAS_CPU_NEVADA
291 select SYS_HAS_EARLY_PRINTK
292 select SYS_SUPPORTS_32BIT_KERNEL
293 select SYS_SUPPORTS_64BIT_KERNEL
294 select SYS_SUPPORTS_LITTLE_ENDIAN
295 select USE_GENERIC_EARLY_PRINTK_8250
297 config MACH_DECSTATION
301 select CEVT_R4K if CPU_R4X00
303 select CSRC_R4K if CPU_R4X00
304 select CPU_DADDI_WORKAROUNDS if 64BIT
305 select CPU_R4000_WORKAROUNDS if 64BIT
306 select CPU_R4400_WORKAROUNDS if 64BIT
307 select DMA_NONCOHERENT
310 select SYS_HAS_CPU_R3000
311 select SYS_HAS_CPU_R4X00
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_64BIT_KERNEL
314 select SYS_SUPPORTS_LITTLE_ENDIAN
315 select SYS_SUPPORTS_128HZ
316 select SYS_SUPPORTS_256HZ
317 select SYS_SUPPORTS_1024HZ
318 select MIPS_L1_CACHE_SHIFT_4
320 This enables support for DEC's MIPS based workstations. For details
321 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
322 DECstation porting pages on <http://decstation.unix-ag.org/>.
324 If you have one of the following DECstation Models you definitely
325 want to choose R4xx0 for the CPU Type:
332 otherwise choose R3000.
335 bool "Jazz family of machines"
338 select ARCH_MAY_HAVE_PC_FDC
341 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
342 select GENERIC_ISA_DMA
343 select HAVE_PCSPKR_PLATFORM
348 select SYS_HAS_CPU_R4X00
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL
351 select SYS_SUPPORTS_100HZ
353 This a family of machines based on the MIPS R4030 chipset which was
354 used by several vendors to build RISC/os and Windows NT workstations.
355 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
356 Olivetti M700-10 workstations.
359 bool "Ingenic SoC based machines"
360 select SYS_SUPPORTS_32BIT_KERNEL
361 select SYS_SUPPORTS_LITTLE_ENDIAN
362 select SYS_SUPPORTS_ZBOOT_UART16550
363 select DMA_NONCOHERENT
367 select GENERIC_IRQ_CHIP
373 bool "Lantiq based platforms"
374 select DMA_NONCOHERENT
378 select SYS_HAS_CPU_MIPS32_R1
379 select SYS_HAS_CPU_MIPS32_R2
380 select SYS_SUPPORTS_BIG_ENDIAN
381 select SYS_SUPPORTS_32BIT_KERNEL
382 select SYS_SUPPORTS_MIPS16
383 select SYS_SUPPORTS_MULTITHREADING
384 select SYS_HAS_EARLY_PRINTK
391 select PINCTRL_LANTIQ
392 select ARCH_HAS_RESET_CONTROLLER
393 select RESET_CONTROLLER
396 bool "LASAT Networks platforms"
400 select DMA_NONCOHERENT
401 select SYS_HAS_EARLY_PRINTK
404 select PCI_GT64XXX_PCI0
406 select R5000_CPU_SCACHE
407 select SYS_HAS_CPU_R5000
408 select SYS_SUPPORTS_32BIT_KERNEL
409 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
410 select SYS_SUPPORTS_LITTLE_ENDIAN
412 config MACH_LOONGSON32
413 bool "Loongson-1 family of machines"
414 select SYS_SUPPORTS_ZBOOT
416 This enables support for the Loongson-1 family of machines.
418 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
419 the Institute of Computing Technology (ICT), Chinese Academy of
422 config MACH_LOONGSON64
423 bool "Loongson-2/3 family of machines"
424 select SYS_SUPPORTS_ZBOOT
426 This enables the support of Loongson-2/3 family of machines.
428 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
429 family of multi-core CPUs. They are both 64-bit general-purpose
430 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
431 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
432 in the People's Republic of China. The chief architect is Professor
435 config MACH_PISTACHIO
436 bool "IMG Pistachio SoC based boards"
440 select CLKSRC_MIPS_GIC
443 select DMA_NONCOHERENT
448 select MIPS_CPU_SCACHE
452 select SYS_HAS_CPU_MIPS32_R2
453 select SYS_SUPPORTS_32BIT_KERNEL
454 select SYS_SUPPORTS_LITTLE_ENDIAN
455 select SYS_SUPPORTS_MIPS_CPS
456 select SYS_SUPPORTS_MULTITHREADING
457 select SYS_SUPPORTS_RELOCATABLE
458 select SYS_SUPPORTS_ZBOOT
459 select SYS_HAS_EARLY_PRINTK
460 select USE_GENERIC_EARLY_PRINTK_8250
463 This enables support for the IMG Pistachio SoC platform.
466 bool "MIPSfpga Xilinx based boards"
476 select MIPS_CPU_SCACHE
477 select SYS_HAS_EARLY_PRINTK
478 select SYS_HAS_CPU_MIPS32_R2
479 select SYS_SUPPORTS_32BIT_KERNEL
480 select SYS_SUPPORTS_LITTLE_ENDIAN
481 select SYS_SUPPORTS_ZBOOT_UART16550
483 select USE_GENERIC_EARLY_PRINTK_8250
486 This enables support for the IMG University Program MIPSfpga platform.
489 bool "MIPS Malta board"
490 select ARCH_MAY_HAVE_PC_FDC
496 select CLKSRC_MIPS_GIC
498 select DMA_MAYBE_COHERENT
499 select GENERIC_ISA_DMA
500 select HAVE_PCSPKR_PLATFORM
507 select MIPS_CPU_SCACHE
508 select MIPS_L1_CACHE_SHIFT_6
509 select PCI_GT64XXX_PCI0
513 select SYS_HAS_CPU_MIPS32_R1
514 select SYS_HAS_CPU_MIPS32_R2
515 select SYS_HAS_CPU_MIPS32_R3_5
516 select SYS_HAS_CPU_MIPS32_R5
517 select SYS_HAS_CPU_MIPS32_R6
518 select SYS_HAS_CPU_MIPS64_R1
519 select SYS_HAS_CPU_MIPS64_R2
520 select SYS_HAS_CPU_MIPS64_R6
521 select SYS_HAS_CPU_NEVADA
522 select SYS_HAS_CPU_RM7000
523 select SYS_SUPPORTS_32BIT_KERNEL
524 select SYS_SUPPORTS_64BIT_KERNEL
525 select SYS_SUPPORTS_BIG_ENDIAN
526 select SYS_SUPPORTS_HIGHMEM
527 select SYS_SUPPORTS_LITTLE_ENDIAN
528 select SYS_SUPPORTS_MICROMIPS
529 select SYS_SUPPORTS_MIPS_CMP
530 select SYS_SUPPORTS_MIPS_CPS
531 select SYS_SUPPORTS_MIPS16
532 select SYS_SUPPORTS_MULTITHREADING
533 select SYS_SUPPORTS_SMARTMIPS
534 select SYS_SUPPORTS_ZBOOT
535 select SYS_SUPPORTS_RELOCATABLE
538 select ZONE_DMA32 if 64BIT
542 This enables support for the MIPS Technologies Malta evaluation
546 bool "Microchip PIC32 Family"
548 This enables support for the Microchip PIC32 family of platforms.
550 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
554 bool "NEC EMMA2RH Mark-eins board"
558 This enables support for the NEC Electronics Mark-eins boards.
561 bool "NEC VR4100 series based machines"
564 select SYS_HAS_CPU_VR41XX
565 select SYS_SUPPORTS_MIPS16
569 bool "NXP STB220 board"
572 Support for NXP Semiconductors STB220 Development Board.
579 Support for NXP Semiconductors STB225 Development Board.
582 bool "PMC-Sierra MSP chipsets"
585 select DMA_NONCOHERENT
587 select NO_EXCEPT_FILL
589 select SYS_HAS_CPU_MIPS32_R1
590 select SYS_HAS_CPU_MIPS32_R2
591 select SYS_SUPPORTS_32BIT_KERNEL
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_MIPS16
596 select SERIAL_8250_CONSOLE
597 select USB_EHCI_BIG_ENDIAN_MMIO
598 select USB_EHCI_BIG_ENDIAN_DESC
600 This adds support for the PMC-Sierra family of Multi-Service
601 Processor System-On-A-Chips. These parts include a number
602 of integrated peripherals, interfaces and DSPs in addition to
603 a variety of MIPS cores.
606 bool "Ralink based machines"
610 select DMA_NONCOHERENT
613 select SYS_HAS_CPU_MIPS32_R1
614 select SYS_HAS_CPU_MIPS32_R2
615 select SYS_SUPPORTS_32BIT_KERNEL
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select SYS_SUPPORTS_MIPS16
618 select SYS_HAS_EARLY_PRINTK
620 select ARCH_HAS_RESET_CONTROLLER
621 select RESET_CONTROLLER
624 bool "SGI IP22 (Indy/Indigo2)"
630 select DEFAULT_SGI_PARTITION
631 select DMA_NONCOHERENT
635 select IP22_CPU_SCACHE
637 select GENERIC_ISA_DMA_SUPPORT_BROKEN
639 select SGI_HAS_INDYDOG
645 select SYS_HAS_CPU_R4X00
646 select SYS_HAS_CPU_R5000
648 # Disable EARLY_PRINTK for now since it leads to overwritten prom
649 # memory during early boot on some machines.
651 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
652 # for a more details discussion
654 # select SYS_HAS_EARLY_PRINTK
655 select SYS_SUPPORTS_32BIT_KERNEL
656 select SYS_SUPPORTS_64BIT_KERNEL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select MIPS_L1_CACHE_SHIFT_7
660 This are the SGI Indy, Challenge S and Indigo2, as well as certain
661 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
662 that runs on these, say Y here.
665 bool "SGI IP27 (Origin200/2000)"
669 select DEFAULT_SGI_PARTITION
671 select SYS_HAS_EARLY_PRINTK
673 select NR_CPUS_DEFAULT_64
674 select SYS_HAS_CPU_R10000
675 select SYS_SUPPORTS_64BIT_KERNEL
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_NUMA
678 select SYS_SUPPORTS_SMP
679 select MIPS_L1_CACHE_SHIFT_7
681 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
682 workstations. To compile a Linux kernel that runs on these, say Y
686 bool "SGI IP28 (Indigo2 R10k)"
692 select DEFAULT_SGI_PARTITION
693 select DMA_NONCOHERENT
694 select GENERIC_ISA_DMA_SUPPORT_BROKEN
700 select SGI_HAS_INDYDOG
706 select SYS_HAS_CPU_R10000
708 # Disable EARLY_PRINTK for now since it leads to overwritten prom
709 # memory during early boot on some machines.
711 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
712 # for a more details discussion
714 # select SYS_HAS_EARLY_PRINTK
715 select SYS_SUPPORTS_64BIT_KERNEL
716 select SYS_SUPPORTS_BIG_ENDIAN
717 select MIPS_L1_CACHE_SHIFT_7
719 This is the SGI Indigo2 with R10000 processor. To compile a Linux
720 kernel that runs on these, say Y here.
729 select DMA_NONCOHERENT
732 select R5000_CPU_SCACHE
733 select RM7000_CPU_SCACHE
734 select SYS_HAS_CPU_R5000
735 select SYS_HAS_CPU_R10000 if BROKEN
736 select SYS_HAS_CPU_RM7000
737 select SYS_HAS_CPU_NEVADA
738 select SYS_SUPPORTS_64BIT_KERNEL
739 select SYS_SUPPORTS_BIG_ENDIAN
741 If you want this kernel to run on SGI O2 workstation, say Y here.
744 bool "Sibyte BCM91120C-CRhine"
747 select SIBYTE_BCM1120
749 select SYS_HAS_CPU_SB1
750 select SYS_SUPPORTS_BIG_ENDIAN
751 select SYS_SUPPORTS_LITTLE_ENDIAN
754 bool "Sibyte BCM91120x-Carmel"
757 select SIBYTE_BCM1120
759 select SYS_HAS_CPU_SB1
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_LITTLE_ENDIAN
764 bool "Sibyte BCM91125C-CRhone"
767 select SIBYTE_BCM1125
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_HIGHMEM
772 select SYS_SUPPORTS_LITTLE_ENDIAN
775 bool "Sibyte BCM91125E-Rhone"
778 select SIBYTE_BCM1125H
780 select SYS_HAS_CPU_SB1
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_LITTLE_ENDIAN
785 bool "Sibyte BCM91250A-SWARM"
788 select HAVE_PATA_PLATFORM
791 select SYS_HAS_CPU_SB1
792 select SYS_SUPPORTS_BIG_ENDIAN
793 select SYS_SUPPORTS_HIGHMEM
794 select SYS_SUPPORTS_LITTLE_ENDIAN
795 select ZONE_DMA32 if 64BIT
797 config SIBYTE_LITTLESUR
798 bool "Sibyte BCM91250C2-LittleSur"
801 select HAVE_PATA_PLATFORM
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
809 config SIBYTE_SENTOSA
810 bool "Sibyte BCM91250E-Sentosa"
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_LITTLE_ENDIAN
820 bool "Sibyte BCM91480B-BigSur"
823 select NR_CPUS_DEFAULT_4
824 select SIBYTE_BCM1x80
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_HIGHMEM
829 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select ZONE_DMA32 if 64BIT
833 bool "SNI RM200/300/400"
834 select FW_ARC if CPU_LITTLE_ENDIAN
835 select FW_ARC32 if CPU_LITTLE_ENDIAN
836 select FW_SNIPROM if CPU_BIG_ENDIAN
837 select ARCH_MAY_HAVE_PC_FDC
841 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
842 select DMA_NONCOHERENT
843 select GENERIC_ISA_DMA
844 select HAVE_PCSPKR_PLATFORM
851 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
852 select SYS_HAS_CPU_R4X00
853 select SYS_HAS_CPU_R5000
854 select SYS_HAS_CPU_R10000
855 select R5000_CPU_SCACHE
856 select SYS_HAS_EARLY_PRINTK
857 select SYS_SUPPORTS_32BIT_KERNEL
858 select SYS_SUPPORTS_64BIT_KERNEL
859 select SYS_SUPPORTS_BIG_ENDIAN
860 select SYS_SUPPORTS_HIGHMEM
861 select SYS_SUPPORTS_LITTLE_ENDIAN
863 The SNI RM200/300/400 are MIPS-based machines manufactured by
864 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
865 Technology and now in turn merged with Fujitsu. Say Y here to
866 support this machine type.
869 bool "Toshiba TX39 series based machines"
872 bool "Toshiba TX49 series based machines"
874 config MIKROTIK_RB532
875 bool "Mikrotik RB532 boards"
878 select DMA_NONCOHERENT
881 select SYS_HAS_CPU_MIPS32_R1
882 select SYS_SUPPORTS_32BIT_KERNEL
883 select SYS_SUPPORTS_LITTLE_ENDIAN
887 select MIPS_L1_CACHE_SHIFT_4
889 Support the Mikrotik(tm) RouterBoard 532 series,
890 based on the IDT RC32434 SoC.
892 config CAVIUM_OCTEON_SOC
893 bool "Cavium Networks Octeon SoC based boards"
895 select ARCH_PHYS_ADDR_T_64BIT
897 select SYS_SUPPORTS_64BIT_KERNEL
898 select SYS_SUPPORTS_BIG_ENDIAN
900 select EDAC_ATOMIC_SCRUB
901 select SYS_SUPPORTS_LITTLE_ENDIAN
902 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
903 select SYS_HAS_EARLY_PRINTK
904 select SYS_HAS_CPU_CAVIUM_OCTEON
911 select ARCH_SPARSEMEM_ENABLE
912 select SYS_SUPPORTS_SMP
913 select NR_CPUS_DEFAULT_16
915 select MTD_COMPLEX_MAPPINGS
916 select SYS_SUPPORTS_RELOCATABLE
918 This option supports all of the Octeon reference boards from Cavium
919 Networks. It builds a kernel that dynamically determines the Octeon
920 CPU type and supports all known board reference implementations.
921 Some of the supported boards are:
928 Say Y here for most Octeon reference boards.
931 bool "Netlogic XLR/XLS based systems"
934 select SYS_HAS_CPU_XLR
935 select SYS_SUPPORTS_SMP
938 select SYS_SUPPORTS_32BIT_KERNEL
939 select SYS_SUPPORTS_64BIT_KERNEL
940 select ARCH_PHYS_ADDR_T_64BIT
941 select SYS_SUPPORTS_BIG_ENDIAN
942 select SYS_SUPPORTS_HIGHMEM
944 select NR_CPUS_DEFAULT_32
948 select ZONE_DMA32 if 64BIT
950 select SYS_HAS_EARLY_PRINTK
951 select SYS_SUPPORTS_ZBOOT
952 select SYS_SUPPORTS_ZBOOT_UART16550
954 Support for systems based on Netlogic XLR and XLS processors.
955 Say Y here if you have a XLR or XLS based board.
958 bool "Netlogic XLP based systems"
961 select SYS_HAS_CPU_XLP
962 select SYS_SUPPORTS_SMP
964 select SYS_SUPPORTS_32BIT_KERNEL
965 select SYS_SUPPORTS_64BIT_KERNEL
966 select ARCH_PHYS_ADDR_T_64BIT
968 select SYS_SUPPORTS_BIG_ENDIAN
969 select SYS_SUPPORTS_LITTLE_ENDIAN
970 select SYS_SUPPORTS_HIGHMEM
972 select NR_CPUS_DEFAULT_32
976 select ZONE_DMA32 if 64BIT
978 select SYS_HAS_EARLY_PRINTK
980 select SYS_SUPPORTS_ZBOOT
981 select SYS_SUPPORTS_ZBOOT_UART16550
983 This board is based on Netlogic XLP Processor.
984 Say Y here if you have a XLP based board.
987 bool "Para-Virtualized guest system"
991 select SYS_SUPPORTS_64BIT_KERNEL
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_BIG_ENDIAN
994 select SYS_SUPPORTS_SMP
995 select NR_CPUS_DEFAULT_4
996 select SYS_HAS_EARLY_PRINTK
997 select SYS_HAS_CPU_MIPS32_R2
998 select SYS_HAS_CPU_MIPS64_R2
999 select SYS_HAS_CPU_CAVIUM_OCTEON
1001 select SWAP_IO_SPACE
1003 This option supports guest running under ????
1007 source "arch/mips/alchemy/Kconfig"
1008 source "arch/mips/ath25/Kconfig"
1009 source "arch/mips/ath79/Kconfig"
1010 source "arch/mips/bcm47xx/Kconfig"
1011 source "arch/mips/bcm63xx/Kconfig"
1012 source "arch/mips/bmips/Kconfig"
1013 source "arch/mips/generic/Kconfig"
1014 source "arch/mips/jazz/Kconfig"
1015 source "arch/mips/jz4740/Kconfig"
1016 source "arch/mips/lantiq/Kconfig"
1017 source "arch/mips/lasat/Kconfig"
1018 source "arch/mips/pic32/Kconfig"
1019 source "arch/mips/pistachio/Kconfig"
1020 source "arch/mips/pmcs-msp71xx/Kconfig"
1021 source "arch/mips/ralink/Kconfig"
1022 source "arch/mips/sgi-ip27/Kconfig"
1023 source "arch/mips/sibyte/Kconfig"
1024 source "arch/mips/txx9/Kconfig"
1025 source "arch/mips/vr41xx/Kconfig"
1026 source "arch/mips/cavium-octeon/Kconfig"
1027 source "arch/mips/loongson32/Kconfig"
1028 source "arch/mips/loongson64/Kconfig"
1029 source "arch/mips/netlogic/Kconfig"
1030 source "arch/mips/paravirt/Kconfig"
1031 source "arch/mips/xilfpga/Kconfig"
1035 config RWSEM_GENERIC_SPINLOCK
1039 config RWSEM_XCHGADD_ALGORITHM
1042 config ARCH_HAS_ILOG2_U32
1046 config ARCH_HAS_ILOG2_U64
1050 config GENERIC_HWEIGHT
1054 config GENERIC_CALIBRATE_DELAY
1058 config SCHED_OMIT_FRAME_POINTER
1063 # Select some configuration options automatically based on user selections.
1068 config ARCH_MAY_HAVE_PC_FDC
1104 config MIPS_CLOCK_VSYSCALL
1105 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1114 config ARCH_DMA_ADDR_T_64BIT
1115 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1117 config ARCH_SUPPORTS_UPROBES
1120 config DMA_MAYBE_COHERENT
1121 select DMA_NONCOHERENT
1124 config DMA_PERDEV_COHERENT
1126 select DMA_MAYBE_COHERENT
1131 config DMA_NONCOHERENT
1133 select NEED_DMA_MAP_STATE
1135 config NEED_DMA_MAP_STATE
1138 config SYS_HAS_EARLY_PRINTK
1141 config SYS_SUPPORTS_HOTPLUG_CPU
1144 config MIPS_BONITO64
1159 config NO_IOPORT_MAP
1165 config GENERIC_ISA_DMA
1167 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1170 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1172 select GENERIC_ISA_DMA
1177 config HOLES_IN_ZONE
1180 config SYS_SUPPORTS_RELOCATABLE
1183 Selected if the platform supports relocating the kernel.
1184 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1185 to allow access to command line and entropy sources.
1188 # Endianness selection. Sufficiently obscure so many users don't know what to
1189 # answer,so we try hard to limit the available choices. Also the use of a
1190 # choice statement should be more obvious to the user.
1193 prompt "Endianness selection"
1195 Some MIPS machines can be configured for either little or big endian
1196 byte order. These modes require different kernels and a different
1197 Linux distribution. In general there is one preferred byteorder for a
1198 particular system but some systems are just as commonly used in the
1199 one or the other endianness.
1201 config CPU_BIG_ENDIAN
1203 depends on SYS_SUPPORTS_BIG_ENDIAN
1205 config CPU_LITTLE_ENDIAN
1206 bool "Little endian"
1207 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1214 config SYS_SUPPORTS_APM_EMULATION
1217 config SYS_SUPPORTS_BIG_ENDIAN
1220 config SYS_SUPPORTS_LITTLE_ENDIAN
1223 config SYS_SUPPORTS_HUGETLBFS
1225 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1228 config MIPS_HUGE_TLB_SUPPORT
1229 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1246 config PCI_GT64XXX_PCI0
1249 config NO_EXCEPT_FILL
1256 select DMA_NONCOHERENT
1258 select SWAP_IO_SPACE
1259 select SYS_HAS_CPU_R5500
1260 select SYS_SUPPORTS_32BIT_KERNEL
1261 select SYS_SUPPORTS_64BIT_KERNEL
1262 select SYS_SUPPORTS_BIG_ENDIAN
1269 select DMA_NONCOHERENT
1270 select SYS_HAS_CPU_MIPS32_R2
1271 select SYS_SUPPORTS_32BIT_KERNEL
1272 select SYS_SUPPORTS_LITTLE_ENDIAN
1273 select SYS_SUPPORTS_BIG_ENDIAN
1274 select SYS_SUPPORTS_MIPS16
1275 select CPU_MIPSR2_IRQ_VI
1284 config SWAP_IO_SPACE
1287 config SGI_HAS_INDYDOG
1299 config SGI_HAS_ZILOG
1302 config SGI_HAS_I8042
1305 config DEFAULT_SGI_PARTITION
1317 config MIPS_L1_CACHE_SHIFT_4
1320 config MIPS_L1_CACHE_SHIFT_5
1323 config MIPS_L1_CACHE_SHIFT_6
1326 config MIPS_L1_CACHE_SHIFT_7
1329 config MIPS_L1_CACHE_SHIFT
1331 default "7" if MIPS_L1_CACHE_SHIFT_7
1332 default "6" if MIPS_L1_CACHE_SHIFT_6
1333 default "5" if MIPS_L1_CACHE_SHIFT_5
1334 default "4" if MIPS_L1_CACHE_SHIFT_4
1337 config HAVE_STD_PC_SERIAL_PORT
1341 bool "ARC console support"
1342 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1346 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1351 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1360 menu "CPU selection"
1366 config CPU_LOONGSON3
1367 bool "Loongson 3 CPU"
1368 depends on SYS_HAS_CPU_LOONGSON3
1369 select CPU_SUPPORTS_64BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1371 select CPU_SUPPORTS_HUGEPAGES
1372 select WEAK_ORDERING
1373 select WEAK_REORDERING_BEYOND_LLSC
1374 select MIPS_PGD_C0_CONTEXT
1377 The Loongson 3 processor implements the MIPS64R2 instruction
1378 set with many extensions.
1380 config LOONGSON3_ENHANCEMENT
1381 bool "New Loongson 3 CPU Enhancements"
1384 select CPU_HAS_PREFETCH
1385 depends on CPU_LOONGSON3
1387 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1388 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1389 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1390 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1391 Fast TLB refill support, etc.
1393 This option enable those enhancements which are not probed at run
1394 time. If you want a generic kernel to run on all Loongson 3 machines,
1395 please say 'N' here. If you want a high-performance kernel to run on
1396 new Loongson 3 machines only, please say 'Y' here.
1398 config CPU_LOONGSON2E
1400 depends on SYS_HAS_CPU_LOONGSON2E
1401 select CPU_LOONGSON2
1403 The Loongson 2E processor implements the MIPS III instruction set
1404 with many extensions.
1406 It has an internal FPGA northbridge, which is compatible to
1409 config CPU_LOONGSON2F
1411 depends on SYS_HAS_CPU_LOONGSON2F
1412 select CPU_LOONGSON2
1415 The Loongson 2F processor implements the MIPS III instruction set
1416 with many extensions.
1418 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1419 have a similar programming interface with FPGA northbridge used in
1422 config CPU_LOONGSON1B
1424 depends on SYS_HAS_CPU_LOONGSON1B
1425 select CPU_LOONGSON1
1426 select LEDS_GPIO_REGISTER
1428 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1429 release 2 instruction set.
1431 config CPU_LOONGSON1C
1433 depends on SYS_HAS_CPU_LOONGSON1C
1434 select CPU_LOONGSON1
1435 select LEDS_GPIO_REGISTER
1437 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1438 release 2 instruction set.
1440 config CPU_MIPS32_R1
1441 bool "MIPS32 Release 1"
1442 depends on SYS_HAS_CPU_MIPS32_R1
1443 select CPU_HAS_PREFETCH
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_HIGHMEM
1447 Choose this option to build a kernel for release 1 or later of the
1448 MIPS32 architecture. Most modern embedded systems with a 32-bit
1449 MIPS processor are based on a MIPS32 processor. If you know the
1450 specific type of processor in your system, choose those that one
1451 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1452 Release 2 of the MIPS32 architecture is available since several
1453 years so chances are you even have a MIPS32 Release 2 processor
1454 in which case you should choose CPU_MIPS32_R2 instead for better
1457 config CPU_MIPS32_R2
1458 bool "MIPS32 Release 2"
1459 depends on SYS_HAS_CPU_MIPS32_R2
1460 select CPU_HAS_PREFETCH
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_HIGHMEM
1463 select CPU_SUPPORTS_MSA
1466 Choose this option to build a kernel for release 2 or later of the
1467 MIPS32 architecture. Most modern embedded systems with a 32-bit
1468 MIPS processor are based on a MIPS32 processor. If you know the
1469 specific type of processor in your system, choose those that one
1470 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1472 config CPU_MIPS32_R6
1473 bool "MIPS32 Release 6"
1474 depends on SYS_HAS_CPU_MIPS32_R6
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_MSA
1481 select MIPS_O32_FP64_SUPPORT
1483 Choose this option to build a kernel for release 6 or later of the
1484 MIPS32 architecture. New MIPS processors, starting with the Warrior
1485 family, are based on a MIPS32r6 processor. If you own an older
1486 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1488 config CPU_MIPS64_R1
1489 bool "MIPS64 Release 1"
1490 depends on SYS_HAS_CPU_MIPS64_R1
1491 select CPU_HAS_PREFETCH
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HIGHMEM
1495 select CPU_SUPPORTS_HUGEPAGES
1497 Choose this option to build a kernel for release 1 or later of the
1498 MIPS64 architecture. Many modern embedded systems with a 64-bit
1499 MIPS processor are based on a MIPS64 processor. If you know the
1500 specific type of processor in your system, choose those that one
1501 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1502 Release 2 of the MIPS64 architecture is available since several
1503 years so chances are you even have a MIPS64 Release 2 processor
1504 in which case you should choose CPU_MIPS64_R2 instead for better
1507 config CPU_MIPS64_R2
1508 bool "MIPS64 Release 2"
1509 depends on SYS_HAS_CPU_MIPS64_R2
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_64BIT_KERNEL
1513 select CPU_SUPPORTS_HIGHMEM
1514 select CPU_SUPPORTS_HUGEPAGES
1515 select CPU_SUPPORTS_MSA
1518 Choose this option to build a kernel for release 2 or later of the
1519 MIPS64 architecture. Many modern embedded systems with a 64-bit
1520 MIPS processor are based on a MIPS64 processor. If you know the
1521 specific type of processor in your system, choose those that one
1522 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1524 config CPU_MIPS64_R6
1525 bool "MIPS64 Release 6"
1526 depends on SYS_HAS_CPU_MIPS64_R6
1527 select CPU_HAS_PREFETCH
1528 select CPU_SUPPORTS_32BIT_KERNEL
1529 select CPU_SUPPORTS_64BIT_KERNEL
1530 select CPU_SUPPORTS_HIGHMEM
1531 select CPU_SUPPORTS_MSA
1533 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1536 Choose this option to build a kernel for release 6 or later of the
1537 MIPS64 architecture. New MIPS processors, starting with the Warrior
1538 family, are based on a MIPS64r6 processor. If you own an older
1539 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1543 depends on SYS_HAS_CPU_R3000
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1548 Please make sure to pick the right CPU type. Linux/MIPS is not
1549 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1550 *not* work on R4000 machines and vice versa. However, since most
1551 of the supported machines have an R4000 (or similar) CPU, R4x00
1552 might be a safe bet. If the resulting kernel does not work,
1553 try to recompile with R3000.
1557 depends on SYS_HAS_CPU_TX39XX
1558 select CPU_SUPPORTS_32BIT_KERNEL
1562 depends on SYS_HAS_CPU_VR41XX
1563 select CPU_SUPPORTS_32BIT_KERNEL
1564 select CPU_SUPPORTS_64BIT_KERNEL
1566 The options selects support for the NEC VR4100 series of processors.
1567 Only choose this option if you have one of these processors as a
1568 kernel built with this option will not run on any other type of
1569 processor or vice versa.
1573 depends on SYS_HAS_CPU_R4300
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1577 MIPS Technologies R4300-series processors.
1581 depends on SYS_HAS_CPU_R4X00
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_64BIT_KERNEL
1584 select CPU_SUPPORTS_HUGEPAGES
1586 MIPS Technologies R4000-series processors other than 4300, including
1587 the R4000, R4400, R4600, and 4700.
1591 depends on SYS_HAS_CPU_TX49XX
1592 select CPU_HAS_PREFETCH
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1599 depends on SYS_HAS_CPU_R5000
1600 select CPU_SUPPORTS_32BIT_KERNEL
1601 select CPU_SUPPORTS_64BIT_KERNEL
1602 select CPU_SUPPORTS_HUGEPAGES
1604 MIPS Technologies R5000-series processors other than the Nevada.
1608 depends on SYS_HAS_CPU_R5432
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1615 depends on SYS_HAS_CPU_R5500
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1620 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1625 depends on SYS_HAS_CPU_R6000
1626 select CPU_SUPPORTS_32BIT_KERNEL
1628 MIPS Technologies R6000 and R6000A series processors. Note these
1629 processors are extremely rare and the support for them is incomplete.
1633 depends on SYS_HAS_CPU_NEVADA
1634 select CPU_SUPPORTS_32BIT_KERNEL
1635 select CPU_SUPPORTS_64BIT_KERNEL
1636 select CPU_SUPPORTS_HUGEPAGES
1638 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1642 depends on SYS_HAS_CPU_R8000
1643 select CPU_HAS_PREFETCH
1644 select CPU_SUPPORTS_64BIT_KERNEL
1646 MIPS Technologies R8000 processors. Note these processors are
1647 uncommon and the support for them is incomplete.
1651 depends on SYS_HAS_CPU_R10000
1652 select CPU_HAS_PREFETCH
1653 select CPU_SUPPORTS_32BIT_KERNEL
1654 select CPU_SUPPORTS_64BIT_KERNEL
1655 select CPU_SUPPORTS_HIGHMEM
1656 select CPU_SUPPORTS_HUGEPAGES
1658 MIPS Technologies R10000-series processors.
1662 depends on SYS_HAS_CPU_RM7000
1663 select CPU_HAS_PREFETCH
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1671 depends on SYS_HAS_CPU_SB1
1672 select CPU_SUPPORTS_32BIT_KERNEL
1673 select CPU_SUPPORTS_64BIT_KERNEL
1674 select CPU_SUPPORTS_HIGHMEM
1675 select CPU_SUPPORTS_HUGEPAGES
1676 select WEAK_ORDERING
1678 config CPU_CAVIUM_OCTEON
1679 bool "Cavium Octeon processor"
1680 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1681 select CPU_HAS_PREFETCH
1682 select CPU_SUPPORTS_64BIT_KERNEL
1683 select WEAK_ORDERING
1684 select CPU_SUPPORTS_HIGHMEM
1685 select CPU_SUPPORTS_HUGEPAGES
1686 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1687 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1688 select MIPS_L1_CACHE_SHIFT_7
1691 The Cavium Octeon processor is a highly integrated chip containing
1692 many ethernet hardware widgets for networking tasks. The processor
1693 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1694 Full details can be found at http://www.caviumnetworks.com.
1697 bool "Broadcom BMIPS"
1698 depends on SYS_HAS_CPU_BMIPS
1700 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1701 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1702 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1703 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1704 select CPU_SUPPORTS_32BIT_KERNEL
1705 select DMA_NONCOHERENT
1707 select SWAP_IO_SPACE
1708 select WEAK_ORDERING
1709 select CPU_SUPPORTS_HIGHMEM
1710 select CPU_HAS_PREFETCH
1711 select CPU_SUPPORTS_CPUFREQ
1712 select MIPS_EXTERNAL_TIMER
1714 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1717 bool "Netlogic XLR SoC"
1718 depends on SYS_HAS_CPU_XLR
1719 select CPU_SUPPORTS_32BIT_KERNEL
1720 select CPU_SUPPORTS_64BIT_KERNEL
1721 select CPU_SUPPORTS_HIGHMEM
1722 select CPU_SUPPORTS_HUGEPAGES
1723 select WEAK_ORDERING
1724 select WEAK_REORDERING_BEYOND_LLSC
1726 Netlogic Microsystems XLR/XLS processors.
1729 bool "Netlogic XLP SoC"
1730 depends on SYS_HAS_CPU_XLP
1731 select CPU_SUPPORTS_32BIT_KERNEL
1732 select CPU_SUPPORTS_64BIT_KERNEL
1733 select CPU_SUPPORTS_HIGHMEM
1734 select WEAK_ORDERING
1735 select WEAK_REORDERING_BEYOND_LLSC
1736 select CPU_HAS_PREFETCH
1738 select CPU_SUPPORTS_HUGEPAGES
1739 select MIPS_ASID_BITS_VARIABLE
1741 Netlogic Microsystems XLP processors.
1744 config CPU_MIPS32_3_5_FEATURES
1745 bool "MIPS32 Release 3.5 Features"
1746 depends on SYS_HAS_CPU_MIPS32_R3_5
1747 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1749 Choose this option to build a kernel for release 2 or later of the
1750 MIPS32 architecture including features from the 3.5 release such as
1751 support for Enhanced Virtual Addressing (EVA).
1753 config CPU_MIPS32_3_5_EVA
1754 bool "Enhanced Virtual Addressing (EVA)"
1755 depends on CPU_MIPS32_3_5_FEATURES
1759 Choose this option if you want to enable the Enhanced Virtual
1760 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1761 One of its primary benefits is an increase in the maximum size
1762 of lowmem (up to 3GB). If unsure, say 'N' here.
1764 config CPU_MIPS32_R5_FEATURES
1765 bool "MIPS32 Release 5 Features"
1766 depends on SYS_HAS_CPU_MIPS32_R5
1767 depends on CPU_MIPS32_R2
1769 Choose this option to build a kernel for release 2 or later of the
1770 MIPS32 architecture including features from release 5 such as
1771 support for Extended Physical Addressing (XPA).
1773 config CPU_MIPS32_R5_XPA
1774 bool "Extended Physical Addressing (XPA)"
1775 depends on CPU_MIPS32_R5_FEATURES
1777 depends on !PAGE_SIZE_4KB
1778 depends on SYS_SUPPORTS_HIGHMEM
1781 select ARCH_PHYS_ADDR_T_64BIT
1784 Choose this option if you want to enable the Extended Physical
1785 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1786 benefit is to increase physical addressing equal to or greater
1787 than 40 bits. Note that this has the side effect of turning on
1788 64-bit addressing which in turn makes the PTEs 64-bit in size.
1789 If unsure, say 'N' here.
1792 config CPU_NOP_WORKAROUNDS
1795 config CPU_JUMP_WORKAROUNDS
1798 config CPU_LOONGSON2F_WORKAROUNDS
1799 bool "Loongson 2F Workarounds"
1801 select CPU_NOP_WORKAROUNDS
1802 select CPU_JUMP_WORKAROUNDS
1804 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1805 require workarounds. Without workarounds the system may hang
1806 unexpectedly. For more information please refer to the gas
1807 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1809 Loongson 2F03 and later have fixed these issues and no workarounds
1810 are needed. The workarounds have no significant side effect on them
1811 but may decrease the performance of the system so this option should
1812 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1815 If unsure, please say Y.
1816 endif # CPU_LOONGSON2F
1818 config SYS_SUPPORTS_ZBOOT
1820 select HAVE_KERNEL_GZIP
1821 select HAVE_KERNEL_BZIP2
1822 select HAVE_KERNEL_LZ4
1823 select HAVE_KERNEL_LZMA
1824 select HAVE_KERNEL_LZO
1825 select HAVE_KERNEL_XZ
1827 config SYS_SUPPORTS_ZBOOT_UART16550
1829 select SYS_SUPPORTS_ZBOOT
1831 config SYS_SUPPORTS_ZBOOT_UART_PROM
1833 select SYS_SUPPORTS_ZBOOT
1835 config CPU_LOONGSON2
1837 select CPU_SUPPORTS_32BIT_KERNEL
1838 select CPU_SUPPORTS_64BIT_KERNEL
1839 select CPU_SUPPORTS_HIGHMEM
1840 select CPU_SUPPORTS_HUGEPAGES
1842 config CPU_LOONGSON1
1846 select CPU_HAS_PREFETCH
1847 select CPU_SUPPORTS_32BIT_KERNEL
1848 select CPU_SUPPORTS_HIGHMEM
1849 select CPU_SUPPORTS_CPUFREQ
1851 config CPU_BMIPS32_3300
1852 select SMP_UP if SMP
1855 config CPU_BMIPS4350
1857 select SYS_SUPPORTS_SMP
1858 select SYS_SUPPORTS_HOTPLUG_CPU
1860 config CPU_BMIPS4380
1862 select MIPS_L1_CACHE_SHIFT_6
1863 select SYS_SUPPORTS_SMP
1864 select SYS_SUPPORTS_HOTPLUG_CPU
1867 config CPU_BMIPS5000
1869 select MIPS_CPU_SCACHE
1870 select MIPS_L1_CACHE_SHIFT_7
1871 select SYS_SUPPORTS_SMP
1872 select SYS_SUPPORTS_HOTPLUG_CPU
1875 config SYS_HAS_CPU_LOONGSON3
1877 select CPU_SUPPORTS_CPUFREQ
1880 config SYS_HAS_CPU_LOONGSON2E
1883 config SYS_HAS_CPU_LOONGSON2F
1885 select CPU_SUPPORTS_CPUFREQ
1886 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1887 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1889 config SYS_HAS_CPU_LOONGSON1B
1892 config SYS_HAS_CPU_LOONGSON1C
1895 config SYS_HAS_CPU_MIPS32_R1
1898 config SYS_HAS_CPU_MIPS32_R2
1901 config SYS_HAS_CPU_MIPS32_R3_5
1904 config SYS_HAS_CPU_MIPS32_R5
1907 config SYS_HAS_CPU_MIPS32_R6
1910 config SYS_HAS_CPU_MIPS64_R1
1913 config SYS_HAS_CPU_MIPS64_R2
1916 config SYS_HAS_CPU_MIPS64_R6
1919 config SYS_HAS_CPU_R3000
1922 config SYS_HAS_CPU_TX39XX
1925 config SYS_HAS_CPU_VR41XX
1928 config SYS_HAS_CPU_R4300
1931 config SYS_HAS_CPU_R4X00
1934 config SYS_HAS_CPU_TX49XX
1937 config SYS_HAS_CPU_R5000
1940 config SYS_HAS_CPU_R5432
1943 config SYS_HAS_CPU_R5500
1946 config SYS_HAS_CPU_R6000
1949 config SYS_HAS_CPU_NEVADA
1952 config SYS_HAS_CPU_R8000
1955 config SYS_HAS_CPU_R10000
1958 config SYS_HAS_CPU_RM7000
1961 config SYS_HAS_CPU_SB1
1964 config SYS_HAS_CPU_CAVIUM_OCTEON
1967 config SYS_HAS_CPU_BMIPS
1970 config SYS_HAS_CPU_BMIPS32_3300
1972 select SYS_HAS_CPU_BMIPS
1974 config SYS_HAS_CPU_BMIPS4350
1976 select SYS_HAS_CPU_BMIPS
1978 config SYS_HAS_CPU_BMIPS4380
1980 select SYS_HAS_CPU_BMIPS
1982 config SYS_HAS_CPU_BMIPS5000
1984 select SYS_HAS_CPU_BMIPS
1986 config SYS_HAS_CPU_XLR
1989 config SYS_HAS_CPU_XLP
1992 config MIPS_MALTA_PM
1993 depends on MIPS_MALTA
1999 # CPU may reorder R->R, R->W, W->R, W->W
2000 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2002 config WEAK_ORDERING
2006 # CPU may reorder reads and writes beyond LL/SC
2007 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2009 config WEAK_REORDERING_BEYOND_LLSC
2014 # These two indicate any level of the MIPS32 and MIPS64 architecture
2018 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2022 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2025 # These two indicate the revision of the architecture, either Release 1 or Release 2
2029 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2033 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2039 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2041 select HAVE_ARCH_BITREVERSE
2042 select MIPS_ASID_BITS_VARIABLE
2051 config SYS_SUPPORTS_32BIT_KERNEL
2053 config SYS_SUPPORTS_64BIT_KERNEL
2055 config CPU_SUPPORTS_32BIT_KERNEL
2057 config CPU_SUPPORTS_64BIT_KERNEL
2059 config CPU_SUPPORTS_CPUFREQ
2061 config CPU_SUPPORTS_ADDRWINCFG
2063 config CPU_SUPPORTS_HUGEPAGES
2065 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2067 config MIPS_PGD_C0_CONTEXT
2069 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2072 # Set to y for ptrace access to watch registers.
2074 config HARDWARE_WATCHPOINTS
2076 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2081 prompt "Kernel code model"
2083 You should only select this option if you have a workload that
2084 actually benefits from 64-bit processing or if your machine has
2085 large memory. You will only be presented a single option in this
2086 menu if your system does not support both 32-bit and 64-bit kernels.
2089 bool "32-bit kernel"
2090 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2093 Select this option if you want to build a 32-bit kernel.
2096 bool "64-bit kernel"
2097 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2099 Select this option if you want to build a 64-bit kernel.
2104 bool "KVM Guest Kernel"
2105 depends on BROKEN_ON_SMP
2107 Select this option if building a guest kernel for KVM (Trap & Emulate)
2110 config KVM_GUEST_TIMER_FREQ
2111 int "Count/Compare Timer Frequency (MHz)"
2112 depends on KVM_GUEST
2115 Set this to non-zero if building a guest kernel for KVM to skip RTC
2116 emulation when determining guest CPU Frequency. Instead, the guest's
2117 timer frequency is specified directly.
2119 config MIPS_VA_BITS_48
2120 bool "48 bits virtual memory"
2123 Support a maximum at least 48 bits of application virtual memory.
2124 Default is 40 bits or less, depending on the CPU.
2125 This option result in a small memory overhead for page tables.
2126 This option is only supported with 16k and 64k page sizes.
2130 prompt "Kernel page size"
2131 default PAGE_SIZE_4KB
2133 config PAGE_SIZE_4KB
2135 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2136 depends on !MIPS_VA_BITS_48
2138 This option select the standard 4kB Linux page size. On some
2139 R3000-family processors this is the only available page size. Using
2140 4kB page size will minimize memory consumption and is therefore
2141 recommended for low memory systems.
2143 config PAGE_SIZE_8KB
2145 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2146 depends on !MIPS_VA_BITS_48
2148 Using 8kB page size will result in higher performance kernel at
2149 the price of higher memory consumption. This option is available
2150 only on R8000 and cnMIPS processors. Note that you will need a
2151 suitable Linux distribution to support this.
2153 config PAGE_SIZE_16KB
2155 depends on !CPU_R3000 && !CPU_TX39XX
2157 Using 16kB page size will result in higher performance kernel at
2158 the price of higher memory consumption. This option is available on
2159 all non-R3000 family processors. Note that you will need a suitable
2160 Linux distribution to support this.
2162 config PAGE_SIZE_32KB
2164 depends on CPU_CAVIUM_OCTEON
2165 depends on !MIPS_VA_BITS_48
2167 Using 32kB page size will result in higher performance kernel at
2168 the price of higher memory consumption. This option is available
2169 only on cnMIPS cores. Note that you will need a suitable Linux
2170 distribution to support this.
2172 config PAGE_SIZE_64KB
2174 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2176 Using 64kB page size will result in higher performance kernel at
2177 the price of higher memory consumption. This option is available on
2178 all non-R3000 family processor. Not that at the time of this
2179 writing this option is still high experimental.
2183 config FORCE_MAX_ZONEORDER
2184 int "Maximum zone order"
2185 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2186 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2187 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2188 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2189 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2190 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2194 The kernel memory allocator divides physically contiguous memory
2195 blocks into "zones", where each zone is a power of two number of
2196 pages. This option selects the largest power of two that the kernel
2197 keeps in the memory allocator. If you need to allocate very large
2198 blocks of physically contiguous memory, then you may need to
2199 increase this value.
2201 This config option is actually maximum order plus one. For example,
2202 a value of 11 means that the largest free memory block is 2^10 pages.
2204 The page size is not necessarily 4KB. Keep this in mind
2205 when choosing a value for this option.
2210 config IP22_CPU_SCACHE
2215 # Support for a MIPS32 / MIPS64 style S-caches
2217 config MIPS_CPU_SCACHE
2221 config R5000_CPU_SCACHE
2225 config RM7000_CPU_SCACHE
2229 config SIBYTE_DMA_PAGEOPS
2230 bool "Use DMA to clear/copy pages"
2233 Instead of using the CPU to zero and copy pages, use a Data Mover
2234 channel. These DMA channels are otherwise unused by the standard
2235 SiByte Linux port. Seems to give a small performance benefit.
2237 config CPU_HAS_PREFETCH
2240 config CPU_GENERIC_DUMP_TLB
2242 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2246 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2248 config CPU_R4K_CACHE_TLB
2250 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2253 bool "MIPS MT SMP support (1 TC on each available VPE)"
2254 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2255 select CPU_MIPSR2_IRQ_VI
2256 select CPU_MIPSR2_IRQ_EI
2261 select SYS_SUPPORTS_SMP
2262 select SYS_SUPPORTS_SCHED_SMT
2263 select MIPS_PERF_SHARED_TC_COUNTERS
2265 This is a kernel model which is known as SMVP. This is supported
2266 on cores with the MT ASE and uses the available VPEs to implement
2267 virtual processors which supports SMP. This is equivalent to the
2268 Intel Hyperthreading feature. For further information go to
2269 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2275 bool "SMT (multithreading) scheduler support"
2276 depends on SYS_SUPPORTS_SCHED_SMT
2279 SMT scheduler support improves the CPU scheduler's decision making
2280 when dealing with MIPS MT enabled cores at a cost of slightly
2281 increased overhead in some places. If unsure say N here.
2283 config SYS_SUPPORTS_SCHED_SMT
2286 config SYS_SUPPORTS_MULTITHREADING
2289 config MIPS_MT_FPAFF
2290 bool "Dynamic FPU affinity for FP-intensive threads"
2292 depends on MIPS_MT_SMP
2294 config MIPSR2_TO_R6_EMULATOR
2295 bool "MIPS R2-to-R6 emulator"
2296 depends on CPU_MIPSR6
2299 Choose this option if you want to run non-R6 MIPS userland code.
2300 Even if you say 'Y' here, the emulator will still be disabled by
2301 default. You can enable it using the 'mipsr2emu' kernel option.
2302 The only reason this is a build-time option is to save ~14K from the
2305 config MIPS_VPE_LOADER
2306 bool "VPE loader support."
2307 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2308 select CPU_MIPSR2_IRQ_VI
2309 select CPU_MIPSR2_IRQ_EI
2312 Includes a loader for loading an elf relocatable object
2313 onto another VPE and running it.
2315 config MIPS_VPE_LOADER_CMP
2318 depends on MIPS_VPE_LOADER && MIPS_CMP
2320 config MIPS_VPE_LOADER_MT
2323 depends on MIPS_VPE_LOADER && !MIPS_CMP
2325 config MIPS_VPE_LOADER_TOM
2326 bool "Load VPE program into memory hidden from linux"
2327 depends on MIPS_VPE_LOADER
2330 The loader can use memory that is present but has been hidden from
2331 Linux using the kernel command line option "mem=xxMB". It's up to
2332 you to ensure the amount you put in the option and the space your
2333 program requires is less or equal to the amount physically present.
2335 config MIPS_VPE_APSP_API
2336 bool "Enable support for AP/SP API (RTLX)"
2337 depends on MIPS_VPE_LOADER
2340 config MIPS_VPE_APSP_API_CMP
2343 depends on MIPS_VPE_APSP_API && MIPS_CMP
2345 config MIPS_VPE_APSP_API_MT
2348 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2351 bool "MIPS CMP framework support (DEPRECATED)"
2352 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2355 select SYS_SUPPORTS_SMP
2356 select WEAK_ORDERING
2359 Select this if you are using a bootloader which implements the "CMP
2360 framework" protocol (ie. YAMON) and want your kernel to make use of
2361 its ability to start secondary CPUs.
2363 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2367 bool "MIPS Coherent Processing System support"
2368 depends on SYS_SUPPORTS_MIPS_CPS
2371 select MIPS_CPS_PM if HOTPLUG_CPU
2373 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2374 select SYS_SUPPORTS_HOTPLUG_CPU
2375 select SYS_SUPPORTS_SMP
2376 select WEAK_ORDERING
2378 Select this if you wish to run an SMP kernel across multiple cores
2379 within a MIPS Coherent Processing System. When this option is
2380 enabled the kernel will probe for other cores and boot them with
2381 no external assistance. It is safe to enable this when hardware
2382 support is unavailable.
2395 config SB1_PASS_2_WORKAROUNDS
2397 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2400 config SB1_PASS_2_1_WORKAROUNDS
2402 depends on CPU_SB1 && CPU_SB1_PASS_2
2406 config ARCH_PHYS_ADDR_T_64BIT
2410 prompt "SmartMIPS or microMIPS ASE support"
2412 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2415 Select this if you want neither microMIPS nor SmartMIPS support
2417 config CPU_HAS_SMARTMIPS
2418 depends on SYS_SUPPORTS_SMARTMIPS
2421 SmartMIPS is a extension of the MIPS32 architecture aimed at
2422 increased security at both hardware and software level for
2423 smartcards. Enabling this option will allow proper use of the
2424 SmartMIPS instructions by Linux applications. However a kernel with
2425 this option will not work on a MIPS core without SmartMIPS core. If
2426 you don't know you probably don't have SmartMIPS and should say N
2429 config CPU_MICROMIPS
2430 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2433 When this option is enabled the kernel will be built using the
2439 bool "Support for the MIPS SIMD Architecture"
2440 depends on CPU_SUPPORTS_MSA
2441 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2443 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2444 and a set of SIMD instructions to operate on them. When this option
2445 is enabled the kernel will support allocating & switching MSA
2446 vector register contexts. If you know that your kernel will only be
2447 running on CPUs which do not support MSA or that your userland will
2448 not be making use of it then you may wish to say N here to reduce
2449 the size & complexity of your kernel.
2463 # Vectored interrupt mode is an R2 feature
2465 config CPU_MIPSR2_IRQ_VI
2469 # Extended interrupt mode is an R2 feature
2471 config CPU_MIPSR2_IRQ_EI
2476 depends on !CPU_R3000
2482 config CPU_DADDI_WORKAROUNDS
2485 config CPU_R4000_WORKAROUNDS
2487 select CPU_R4400_WORKAROUNDS
2489 config CPU_R4400_WORKAROUNDS
2492 config MIPS_ASID_SHIFT
2494 default 6 if CPU_R3000 || CPU_TX39XX
2495 default 4 if CPU_R8000
2498 config MIPS_ASID_BITS
2500 default 0 if MIPS_ASID_BITS_VARIABLE
2501 default 6 if CPU_R3000 || CPU_TX39XX
2504 config MIPS_ASID_BITS_VARIABLE
2508 # - Highmem only makes sense for the 32-bit kernel.
2509 # - The current highmem code will only work properly on physically indexed
2510 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2511 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2512 # moment we protect the user and offer the highmem option only on machines
2513 # where it's known to be safe. This will not offer highmem on a few systems
2514 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2515 # indexed CPUs but we're playing safe.
2516 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2517 # know they might have memory configurations that could make use of highmem
2521 bool "High Memory Support"
2522 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2524 config CPU_SUPPORTS_HIGHMEM
2527 config SYS_SUPPORTS_HIGHMEM
2530 config SYS_SUPPORTS_SMARTMIPS
2533 config SYS_SUPPORTS_MICROMIPS
2536 config SYS_SUPPORTS_MIPS16
2539 This option must be set if a kernel might be executed on a MIPS16-
2540 enabled CPU even if MIPS16 is not actually being used. In other
2541 words, it makes the kernel MIPS16-tolerant.
2543 config CPU_SUPPORTS_MSA
2546 config ARCH_FLATMEM_ENABLE
2548 depends on !NUMA && !CPU_LOONGSON2
2550 config ARCH_DISCONTIGMEM_ENABLE
2552 default y if SGI_IP27
2554 Say Y to support efficient handling of discontiguous physical memory,
2555 for architectures which are either NUMA (Non-Uniform Memory Access)
2556 or have huge holes in the physical address space for other reasons.
2557 See <file:Documentation/vm/numa> for more.
2559 config ARCH_SPARSEMEM_ENABLE
2561 select SPARSEMEM_STATIC
2565 depends on SYS_SUPPORTS_NUMA
2567 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2568 Access). This option improves performance on systems with more
2569 than two nodes; on two node systems it is generally better to
2570 leave it disabled; on single node systems disable this option
2573 config SYS_SUPPORTS_NUMA
2577 bool "Relocatable kernel"
2578 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2580 This builds a kernel image that retains relocation information
2581 so it can be loaded someplace besides the default 1MB.
2582 The relocations make the kernel binary about 15% larger,
2583 but are discarded at runtime
2585 config RELOCATION_TABLE_SIZE
2586 hex "Relocation table size"
2587 depends on RELOCATABLE
2588 range 0x0 0x01000000
2589 default "0x00100000"
2591 A table of relocation data will be appended to the kernel binary
2592 and parsed at boot to fix up the relocated kernel.
2594 This option allows the amount of space reserved for the table to be
2595 adjusted, although the default of 1Mb should be ok in most cases.
2597 The build will fail and a valid size suggested if this is too small.
2599 If unsure, leave at the default value.
2601 config RANDOMIZE_BASE
2602 bool "Randomize the address of the kernel image"
2603 depends on RELOCATABLE
2605 Randomizes the physical and virtual address at which the
2606 kernel image is loaded, as a security feature that
2607 deters exploit attempts relying on knowledge of the location
2608 of kernel internals.
2610 Entropy is generated using any coprocessor 0 registers available.
2612 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2616 config RANDOMIZE_BASE_MAX_OFFSET
2617 hex "Maximum kASLR offset" if EXPERT
2618 depends on RANDOMIZE_BASE
2619 range 0x0 0x40000000 if EVA || 64BIT
2620 range 0x0 0x08000000
2621 default "0x01000000"
2623 When kASLR is active, this provides the maximum offset that will
2624 be applied to the kernel image. It should be set according to the
2625 amount of physical RAM available in the target system minus
2626 PHYSICAL_START and must be a power of 2.
2628 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2629 EVA or 64-bit. The default is 16Mb.
2634 depends on NEED_MULTIPLE_NODES
2636 config HW_PERF_EVENTS
2637 bool "Enable hardware performance counter support for perf events"
2638 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2641 Enable hardware performance counter support for perf events. If
2642 disabled, perf events will use software events only.
2647 bool "Multi-Processing support"
2648 depends on SYS_SUPPORTS_SMP
2650 This enables support for systems with more than one CPU. If you have
2651 a system with only one CPU, say N. If you have a system with more
2652 than one CPU, say Y.
2654 If you say N here, the kernel will run on uni- and multiprocessor
2655 machines, but will use only one CPU of a multiprocessor machine. If
2656 you say Y here, the kernel will run on many, but not all,
2657 uniprocessor machines. On a uniprocessor machine, the kernel
2658 will run faster if you say N here.
2660 People using multiprocessor machines who say Y here should also say
2661 Y to "Enhanced Real Time Clock Support", below.
2663 See also the SMP-HOWTO available at
2664 <http://www.tldp.org/docs.html#howto>.
2666 If you don't know what to do here, say N.
2669 bool "Support for hot-pluggable CPUs"
2670 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2672 Say Y here to allow turning CPUs off and on. CPUs can be
2673 controlled through /sys/devices/system/cpu.
2674 (Note: power management support will enable this option
2675 automatically on SMP systems. )
2676 Say N if you want to disable CPU hotplug.
2681 config SYS_SUPPORTS_MIPS_CMP
2684 config SYS_SUPPORTS_MIPS_CPS
2687 config SYS_SUPPORTS_SMP
2690 config NR_CPUS_DEFAULT_4
2693 config NR_CPUS_DEFAULT_8
2696 config NR_CPUS_DEFAULT_16
2699 config NR_CPUS_DEFAULT_32
2702 config NR_CPUS_DEFAULT_64
2706 int "Maximum number of CPUs (2-256)"
2709 default "4" if NR_CPUS_DEFAULT_4
2710 default "8" if NR_CPUS_DEFAULT_8
2711 default "16" if NR_CPUS_DEFAULT_16
2712 default "32" if NR_CPUS_DEFAULT_32
2713 default "64" if NR_CPUS_DEFAULT_64
2715 This allows you to specify the maximum number of CPUs which this
2716 kernel will support. The maximum supported value is 32 for 32-bit
2717 kernel and 64 for 64-bit kernels; the minimum value which makes
2718 sense is 1 for Qemu (useful only for kernel debugging purposes)
2719 and 2 for all others.
2721 This is purely to save memory - each supported CPU adds
2722 approximately eight kilobytes to the kernel image. For best
2723 performance should round up your number of processors to the next
2726 config MIPS_PERF_SHARED_TC_COUNTERS
2730 # Timer Interrupt Frequency Configuration
2734 prompt "Timer frequency"
2737 Allows the configuration of the timer frequency.
2740 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2743 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2746 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2765 config SYS_SUPPORTS_24HZ
2768 config SYS_SUPPORTS_48HZ
2771 config SYS_SUPPORTS_100HZ
2774 config SYS_SUPPORTS_128HZ
2777 config SYS_SUPPORTS_250HZ
2780 config SYS_SUPPORTS_256HZ
2783 config SYS_SUPPORTS_1000HZ
2786 config SYS_SUPPORTS_1024HZ
2789 config SYS_SUPPORTS_ARBIT_HZ
2791 default y if !SYS_SUPPORTS_24HZ && \
2792 !SYS_SUPPORTS_48HZ && \
2793 !SYS_SUPPORTS_100HZ && \
2794 !SYS_SUPPORTS_128HZ && \
2795 !SYS_SUPPORTS_250HZ && \
2796 !SYS_SUPPORTS_256HZ && \
2797 !SYS_SUPPORTS_1000HZ && \
2798 !SYS_SUPPORTS_1024HZ
2804 default 100 if HZ_100
2805 default 128 if HZ_128
2806 default 250 if HZ_250
2807 default 256 if HZ_256
2808 default 1000 if HZ_1000
2809 default 1024 if HZ_1024
2812 def_bool HIGH_RES_TIMERS
2814 source "kernel/Kconfig.preempt"
2817 bool "Kexec system call"
2820 kexec is a system call that implements the ability to shutdown your
2821 current kernel, and to start another kernel. It is like a reboot
2822 but it is independent of the system firmware. And like a reboot
2823 you can start any kernel with it, not just Linux.
2825 The name comes from the similarity to the exec system call.
2827 It is an ongoing process to be certain the hardware in a machine
2828 is properly shutdown, so do not be surprised if this code does not
2829 initially work for you. As of this writing the exact hardware
2830 interface is strongly in flux, so no good recommendation can be
2834 bool "Kernel crash dumps"
2836 Generate crash dump after being started by kexec.
2837 This should be normally only set in special crash dump kernels
2838 which are loaded in the main kernel with kexec-tools into
2839 a specially reserved region and then later executed after
2840 a crash by kdump/kexec. The crash dump kernel must be compiled
2841 to a memory address not used by the main kernel or firmware using
2844 config PHYSICAL_START
2845 hex "Physical address where the kernel is loaded"
2846 default "0xffffffff84000000" if 64BIT
2847 default "0x84000000" if 32BIT
2848 depends on CRASH_DUMP
2850 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2851 If you plan to use kernel for capturing the crash dump change
2852 this value to start of the reserved region (the "X" value as
2853 specified in the "crashkernel=YM@XM" command line boot parameter
2854 passed to the panic-ed kernel).
2857 bool "Enable seccomp to safely compute untrusted bytecode"
2861 This kernel feature is useful for number crunching applications
2862 that may need to compute untrusted bytecode during their
2863 execution. By using pipes or other transports made available to
2864 the process as file descriptors supporting the read/write
2865 syscalls, it's possible to isolate those applications in
2866 their own address space using seccomp. Once seccomp is
2867 enabled via /proc/<pid>/seccomp, it cannot be disabled
2868 and the task is only allowed to execute a few safe syscalls
2869 defined by each seccomp mode.
2871 If unsure, say Y. Only embedded should say N here.
2873 config MIPS_O32_FP64_SUPPORT
2874 bool "Support for O32 binaries using 64-bit FP"
2875 depends on 32BIT || MIPS32_O32
2877 When this is enabled, the kernel will support use of 64-bit floating
2878 point registers with binaries using the O32 ABI along with the
2879 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2880 32-bit MIPS systems this support is at the cost of increasing the
2881 size and complexity of the compiled FPU emulator. Thus if you are
2882 running a MIPS32 system and know that none of your userland binaries
2883 will require 64-bit floating point, you may wish to reduce the size
2884 of your kernel & potentially improve FP emulation performance by
2887 Although binutils currently supports use of this flag the details
2888 concerning its effect upon the O32 ABI in userland are still being
2889 worked on. In order to avoid userland becoming dependant upon current
2890 behaviour before the details have been finalised, this option should
2891 be considered experimental and only enabled by those working upon
2899 select OF_EARLY_FLATTREE
2906 prompt "Kernel appended dtb support" if USE_OF
2907 default MIPS_NO_APPENDED_DTB
2909 config MIPS_NO_APPENDED_DTB
2912 Do not enable appended dtb support.
2914 config MIPS_ELF_APPENDED_DTB
2917 With this option, the boot code will look for a device tree binary
2918 DTB) included in the vmlinux ELF section .appended_dtb. By default
2919 it is empty and the DTB can be appended using binutils command
2922 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2924 This is meant as a backward compatiblity convenience for those
2925 systems with a bootloader that can't be upgraded to accommodate
2926 the documented boot protocol using a device tree.
2928 config MIPS_RAW_APPENDED_DTB
2929 bool "vmlinux.bin or vmlinuz.bin"
2931 With this option, the boot code will look for a device tree binary
2932 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2933 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2935 This is meant as a backward compatibility convenience for those
2936 systems with a bootloader that can't be upgraded to accommodate
2937 the documented boot protocol using a device tree.
2939 Beware that there is very little in terms of protection against
2940 this option being confused by leftover garbage in memory that might
2941 look like a DTB header after a reboot if no actual DTB is appended
2942 to vmlinux.bin. Do not leave this option active in a production kernel
2943 if you don't intend to always append a DTB.
2947 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2948 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2951 default MIPS_CMDLINE_FROM_BOOTLOADER
2953 config MIPS_CMDLINE_FROM_DTB
2955 bool "Dtb kernel arguments if available"
2957 config MIPS_CMDLINE_DTB_EXTEND
2959 bool "Extend dtb kernel arguments with bootloader arguments"
2961 config MIPS_CMDLINE_FROM_BOOTLOADER
2962 bool "Bootloader kernel arguments if available"
2964 config MIPS_CMDLINE_BUILTIN_EXTEND
2965 depends on CMDLINE_BOOL
2966 bool "Extend builtin kernel arguments with bootloader arguments"
2971 config LOCKDEP_SUPPORT
2975 config STACKTRACE_SUPPORT
2979 config HAVE_LATENCYTOP_SUPPORT
2983 config PGTABLE_LEVELS
2985 default 3 if 64BIT && !PAGE_SIZE_64KB
2988 source "init/Kconfig"
2990 source "kernel/Kconfig.freezer"
2992 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3000 bool "Support for PCI controller"
3001 depends on HW_HAS_PCI
3004 Find out whether you have a PCI motherboard. PCI is the name of a
3005 bus system, i.e. the way the CPU talks to the other stuff inside
3006 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3010 bool "Support for HT-linked PCI"
3012 depends on CPU_LOONGSON3
3016 Loongson family machines use Hyper-Transport bus for inter-core
3017 connection and device connection. The PCI bus is a subordinate
3018 linked at HT. Choose Y for Loongson-3 based machines.
3023 config PCI_DOMAINS_GENERIC
3026 config PCI_DRIVERS_GENERIC
3027 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3030 config PCI_DRIVERS_LEGACY
3031 def_bool !PCI_DRIVERS_GENERIC
3032 select NO_GENERIC_PCI_IOPORT_MAP
3034 source "drivers/pci/Kconfig"
3037 # ISA support is now enabled via select. Too many systems still have the one
3038 # or other ISA chip on the board that users don't know about so don't expect
3039 # users to choose the right thing ...
3046 depends on HW_HAS_EISA
3048 select GENERIC_ISA_DMA
3050 The Extended Industry Standard Architecture (EISA) bus was
3051 developed as an open alternative to the IBM MicroChannel bus.
3053 The EISA bus provided some of the features of the IBM MicroChannel
3054 bus while maintaining backward compatibility with cards made for
3055 the older ISA bus. The EISA bus saw limited use between 1988 and
3056 1995 when it was made obsolete by the PCI bus.
3058 Say Y here if you are building a kernel for an EISA-based machine.
3062 source "drivers/eisa/Kconfig"
3065 bool "TURBOchannel support"
3066 depends on MACH_DECSTATION
3068 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3069 processors. TURBOchannel programming specifications are available
3071 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3073 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3074 Linux driver support status is documented at:
3075 <http://www.linux-mips.org/wiki/DECstation>
3081 config ARCH_MMAP_RND_BITS_MIN
3085 config ARCH_MMAP_RND_BITS_MAX
3089 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3092 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3099 select MIPS_EXTERNAL_TIMER
3107 source "drivers/pcmcia/Kconfig"
3110 tristate "RapidIO support"
3114 If you say Y here, the kernel will include drivers and
3115 infrastructure code to support RapidIO interconnect devices.
3117 source "drivers/rapidio/Kconfig"
3121 menu "Executable file formats"
3123 source "fs/Kconfig.binfmt"
3128 config MIPS32_COMPAT
3134 config SYSVIPC_COMPAT
3138 bool "Kernel support for o32 binaries"
3140 select ARCH_WANT_OLD_COMPAT_IPC
3142 select MIPS32_COMPAT
3143 select SYSVIPC_COMPAT if SYSVIPC
3145 Select this option if you want to run o32 binaries. These are pure
3146 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3147 existing binaries are in this format.
3152 bool "Kernel support for n32 binaries"
3155 select MIPS32_COMPAT
3156 select SYSVIPC_COMPAT if SYSVIPC
3158 Select this option if you want to run n32 binaries. These are
3159 64-bit binaries using 32-bit quantities for addressing and certain
3160 data that would normally be 64-bit. They are used in special
3167 default y if MIPS32_O32 || MIPS32_N32
3172 menu "Power management options"
3174 config ARCH_HIBERNATION_POSSIBLE
3176 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3178 config ARCH_SUSPEND_POSSIBLE
3180 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3182 source "kernel/power/Kconfig"
3186 config MIPS_EXTERNAL_TIMER
3189 menu "CPU Power Management"
3191 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3192 source "drivers/cpufreq/Kconfig"
3195 source "drivers/cpuidle/Kconfig"
3199 source "net/Kconfig"
3201 source "drivers/Kconfig"
3203 source "drivers/firmware/Kconfig"
3207 source "arch/mips/Kconfig.debug"
3209 source "security/Kconfig"
3211 source "crypto/Kconfig"
3213 source "lib/Kconfig"
3215 source "arch/mips/kvm/Kconfig"