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
1690 The Cavium Octeon processor is a highly integrated chip containing
1691 many ethernet hardware widgets for networking tasks. The processor
1692 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1693 Full details can be found at http://www.caviumnetworks.com.
1696 bool "Broadcom BMIPS"
1697 depends on SYS_HAS_CPU_BMIPS
1699 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1700 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1701 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1702 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select DMA_NONCOHERENT
1706 select SWAP_IO_SPACE
1707 select WEAK_ORDERING
1708 select CPU_SUPPORTS_HIGHMEM
1709 select CPU_HAS_PREFETCH
1710 select CPU_SUPPORTS_CPUFREQ
1711 select MIPS_EXTERNAL_TIMER
1713 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1716 bool "Netlogic XLR SoC"
1717 depends on SYS_HAS_CPU_XLR
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select CPU_SUPPORTS_HIGHMEM
1721 select CPU_SUPPORTS_HUGEPAGES
1722 select WEAK_ORDERING
1723 select WEAK_REORDERING_BEYOND_LLSC
1725 Netlogic Microsystems XLR/XLS processors.
1728 bool "Netlogic XLP SoC"
1729 depends on SYS_HAS_CPU_XLP
1730 select CPU_SUPPORTS_32BIT_KERNEL
1731 select CPU_SUPPORTS_64BIT_KERNEL
1732 select CPU_SUPPORTS_HIGHMEM
1733 select WEAK_ORDERING
1734 select WEAK_REORDERING_BEYOND_LLSC
1735 select CPU_HAS_PREFETCH
1737 select CPU_SUPPORTS_HUGEPAGES
1738 select MIPS_ASID_BITS_VARIABLE
1740 Netlogic Microsystems XLP processors.
1743 config CPU_MIPS32_3_5_FEATURES
1744 bool "MIPS32 Release 3.5 Features"
1745 depends on SYS_HAS_CPU_MIPS32_R3_5
1746 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1748 Choose this option to build a kernel for release 2 or later of the
1749 MIPS32 architecture including features from the 3.5 release such as
1750 support for Enhanced Virtual Addressing (EVA).
1752 config CPU_MIPS32_3_5_EVA
1753 bool "Enhanced Virtual Addressing (EVA)"
1754 depends on CPU_MIPS32_3_5_FEATURES
1758 Choose this option if you want to enable the Enhanced Virtual
1759 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1760 One of its primary benefits is an increase in the maximum size
1761 of lowmem (up to 3GB). If unsure, say 'N' here.
1763 config CPU_MIPS32_R5_FEATURES
1764 bool "MIPS32 Release 5 Features"
1765 depends on SYS_HAS_CPU_MIPS32_R5
1766 depends on CPU_MIPS32_R2
1768 Choose this option to build a kernel for release 2 or later of the
1769 MIPS32 architecture including features from release 5 such as
1770 support for Extended Physical Addressing (XPA).
1772 config CPU_MIPS32_R5_XPA
1773 bool "Extended Physical Addressing (XPA)"
1774 depends on CPU_MIPS32_R5_FEATURES
1776 depends on !PAGE_SIZE_4KB
1777 depends on SYS_SUPPORTS_HIGHMEM
1780 select ARCH_PHYS_ADDR_T_64BIT
1783 Choose this option if you want to enable the Extended Physical
1784 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1785 benefit is to increase physical addressing equal to or greater
1786 than 40 bits. Note that this has the side effect of turning on
1787 64-bit addressing which in turn makes the PTEs 64-bit in size.
1788 If unsure, say 'N' here.
1791 config CPU_NOP_WORKAROUNDS
1794 config CPU_JUMP_WORKAROUNDS
1797 config CPU_LOONGSON2F_WORKAROUNDS
1798 bool "Loongson 2F Workarounds"
1800 select CPU_NOP_WORKAROUNDS
1801 select CPU_JUMP_WORKAROUNDS
1803 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1804 require workarounds. Without workarounds the system may hang
1805 unexpectedly. For more information please refer to the gas
1806 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1808 Loongson 2F03 and later have fixed these issues and no workarounds
1809 are needed. The workarounds have no significant side effect on them
1810 but may decrease the performance of the system so this option should
1811 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1814 If unsure, please say Y.
1815 endif # CPU_LOONGSON2F
1817 config SYS_SUPPORTS_ZBOOT
1819 select HAVE_KERNEL_GZIP
1820 select HAVE_KERNEL_BZIP2
1821 select HAVE_KERNEL_LZ4
1822 select HAVE_KERNEL_LZMA
1823 select HAVE_KERNEL_LZO
1824 select HAVE_KERNEL_XZ
1826 config SYS_SUPPORTS_ZBOOT_UART16550
1828 select SYS_SUPPORTS_ZBOOT
1830 config SYS_SUPPORTS_ZBOOT_UART_PROM
1832 select SYS_SUPPORTS_ZBOOT
1834 config CPU_LOONGSON2
1836 select CPU_SUPPORTS_32BIT_KERNEL
1837 select CPU_SUPPORTS_64BIT_KERNEL
1838 select CPU_SUPPORTS_HIGHMEM
1839 select CPU_SUPPORTS_HUGEPAGES
1841 config CPU_LOONGSON1
1845 select CPU_HAS_PREFETCH
1846 select CPU_SUPPORTS_32BIT_KERNEL
1847 select CPU_SUPPORTS_HIGHMEM
1848 select CPU_SUPPORTS_CPUFREQ
1850 config CPU_BMIPS32_3300
1851 select SMP_UP if SMP
1854 config CPU_BMIPS4350
1856 select SYS_SUPPORTS_SMP
1857 select SYS_SUPPORTS_HOTPLUG_CPU
1859 config CPU_BMIPS4380
1861 select MIPS_L1_CACHE_SHIFT_6
1862 select SYS_SUPPORTS_SMP
1863 select SYS_SUPPORTS_HOTPLUG_CPU
1866 config CPU_BMIPS5000
1868 select MIPS_CPU_SCACHE
1869 select MIPS_L1_CACHE_SHIFT_7
1870 select SYS_SUPPORTS_SMP
1871 select SYS_SUPPORTS_HOTPLUG_CPU
1874 config SYS_HAS_CPU_LOONGSON3
1876 select CPU_SUPPORTS_CPUFREQ
1879 config SYS_HAS_CPU_LOONGSON2E
1882 config SYS_HAS_CPU_LOONGSON2F
1884 select CPU_SUPPORTS_CPUFREQ
1885 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1886 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1888 config SYS_HAS_CPU_LOONGSON1B
1891 config SYS_HAS_CPU_LOONGSON1C
1894 config SYS_HAS_CPU_MIPS32_R1
1897 config SYS_HAS_CPU_MIPS32_R2
1900 config SYS_HAS_CPU_MIPS32_R3_5
1903 config SYS_HAS_CPU_MIPS32_R5
1906 config SYS_HAS_CPU_MIPS32_R6
1909 config SYS_HAS_CPU_MIPS64_R1
1912 config SYS_HAS_CPU_MIPS64_R2
1915 config SYS_HAS_CPU_MIPS64_R6
1918 config SYS_HAS_CPU_R3000
1921 config SYS_HAS_CPU_TX39XX
1924 config SYS_HAS_CPU_VR41XX
1927 config SYS_HAS_CPU_R4300
1930 config SYS_HAS_CPU_R4X00
1933 config SYS_HAS_CPU_TX49XX
1936 config SYS_HAS_CPU_R5000
1939 config SYS_HAS_CPU_R5432
1942 config SYS_HAS_CPU_R5500
1945 config SYS_HAS_CPU_R6000
1948 config SYS_HAS_CPU_NEVADA
1951 config SYS_HAS_CPU_R8000
1954 config SYS_HAS_CPU_R10000
1957 config SYS_HAS_CPU_RM7000
1960 config SYS_HAS_CPU_SB1
1963 config SYS_HAS_CPU_CAVIUM_OCTEON
1966 config SYS_HAS_CPU_BMIPS
1969 config SYS_HAS_CPU_BMIPS32_3300
1971 select SYS_HAS_CPU_BMIPS
1973 config SYS_HAS_CPU_BMIPS4350
1975 select SYS_HAS_CPU_BMIPS
1977 config SYS_HAS_CPU_BMIPS4380
1979 select SYS_HAS_CPU_BMIPS
1981 config SYS_HAS_CPU_BMIPS5000
1983 select SYS_HAS_CPU_BMIPS
1985 config SYS_HAS_CPU_XLR
1988 config SYS_HAS_CPU_XLP
1991 config MIPS_MALTA_PM
1992 depends on MIPS_MALTA
1998 # CPU may reorder R->R, R->W, W->R, W->W
1999 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2001 config WEAK_ORDERING
2005 # CPU may reorder reads and writes beyond LL/SC
2006 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2008 config WEAK_REORDERING_BEYOND_LLSC
2013 # These two indicate any level of the MIPS32 and MIPS64 architecture
2017 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2021 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2024 # These two indicate the revision of the architecture, either Release 1 or Release 2
2028 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2032 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2038 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2040 select HAVE_ARCH_BITREVERSE
2041 select MIPS_ASID_BITS_VARIABLE
2050 config SYS_SUPPORTS_32BIT_KERNEL
2052 config SYS_SUPPORTS_64BIT_KERNEL
2054 config CPU_SUPPORTS_32BIT_KERNEL
2056 config CPU_SUPPORTS_64BIT_KERNEL
2058 config CPU_SUPPORTS_CPUFREQ
2060 config CPU_SUPPORTS_ADDRWINCFG
2062 config CPU_SUPPORTS_HUGEPAGES
2064 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2066 config MIPS_PGD_C0_CONTEXT
2068 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2071 # Set to y for ptrace access to watch registers.
2073 config HARDWARE_WATCHPOINTS
2075 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2080 prompt "Kernel code model"
2082 You should only select this option if you have a workload that
2083 actually benefits from 64-bit processing or if your machine has
2084 large memory. You will only be presented a single option in this
2085 menu if your system does not support both 32-bit and 64-bit kernels.
2088 bool "32-bit kernel"
2089 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2092 Select this option if you want to build a 32-bit kernel.
2095 bool "64-bit kernel"
2096 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2098 Select this option if you want to build a 64-bit kernel.
2103 bool "KVM Guest Kernel"
2104 depends on BROKEN_ON_SMP
2106 Select this option if building a guest kernel for KVM (Trap & Emulate)
2109 config KVM_GUEST_TIMER_FREQ
2110 int "Count/Compare Timer Frequency (MHz)"
2111 depends on KVM_GUEST
2114 Set this to non-zero if building a guest kernel for KVM to skip RTC
2115 emulation when determining guest CPU Frequency. Instead, the guest's
2116 timer frequency is specified directly.
2118 config MIPS_VA_BITS_48
2119 bool "48 bits virtual memory"
2122 Support a maximum at least 48 bits of application virtual memory.
2123 Default is 40 bits or less, depending on the CPU.
2124 This option result in a small memory overhead for page tables.
2125 This option is only supported with 16k and 64k page sizes.
2129 prompt "Kernel page size"
2130 default PAGE_SIZE_4KB
2132 config PAGE_SIZE_4KB
2134 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2135 depends on !MIPS_VA_BITS_48
2137 This option select the standard 4kB Linux page size. On some
2138 R3000-family processors this is the only available page size. Using
2139 4kB page size will minimize memory consumption and is therefore
2140 recommended for low memory systems.
2142 config PAGE_SIZE_8KB
2144 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2145 depends on !MIPS_VA_BITS_48
2147 Using 8kB page size will result in higher performance kernel at
2148 the price of higher memory consumption. This option is available
2149 only on R8000 and cnMIPS processors. Note that you will need a
2150 suitable Linux distribution to support this.
2152 config PAGE_SIZE_16KB
2154 depends on !CPU_R3000 && !CPU_TX39XX
2156 Using 16kB page size will result in higher performance kernel at
2157 the price of higher memory consumption. This option is available on
2158 all non-R3000 family processors. Note that you will need a suitable
2159 Linux distribution to support this.
2161 config PAGE_SIZE_32KB
2163 depends on CPU_CAVIUM_OCTEON
2164 depends on !MIPS_VA_BITS_48
2166 Using 32kB page size will result in higher performance kernel at
2167 the price of higher memory consumption. This option is available
2168 only on cnMIPS cores. Note that you will need a suitable Linux
2169 distribution to support this.
2171 config PAGE_SIZE_64KB
2173 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2175 Using 64kB page size will result in higher performance kernel at
2176 the price of higher memory consumption. This option is available on
2177 all non-R3000 family processor. Not that at the time of this
2178 writing this option is still high experimental.
2182 config FORCE_MAX_ZONEORDER
2183 int "Maximum zone order"
2184 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2185 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2186 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2187 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2188 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2189 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2193 The kernel memory allocator divides physically contiguous memory
2194 blocks into "zones", where each zone is a power of two number of
2195 pages. This option selects the largest power of two that the kernel
2196 keeps in the memory allocator. If you need to allocate very large
2197 blocks of physically contiguous memory, then you may need to
2198 increase this value.
2200 This config option is actually maximum order plus one. For example,
2201 a value of 11 means that the largest free memory block is 2^10 pages.
2203 The page size is not necessarily 4KB. Keep this in mind
2204 when choosing a value for this option.
2209 config IP22_CPU_SCACHE
2214 # Support for a MIPS32 / MIPS64 style S-caches
2216 config MIPS_CPU_SCACHE
2220 config R5000_CPU_SCACHE
2224 config RM7000_CPU_SCACHE
2228 config SIBYTE_DMA_PAGEOPS
2229 bool "Use DMA to clear/copy pages"
2232 Instead of using the CPU to zero and copy pages, use a Data Mover
2233 channel. These DMA channels are otherwise unused by the standard
2234 SiByte Linux port. Seems to give a small performance benefit.
2236 config CPU_HAS_PREFETCH
2239 config CPU_GENERIC_DUMP_TLB
2241 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2245 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2247 config CPU_R4K_CACHE_TLB
2249 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2252 bool "MIPS MT SMP support (1 TC on each available VPE)"
2253 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2254 select CPU_MIPSR2_IRQ_VI
2255 select CPU_MIPSR2_IRQ_EI
2260 select SYS_SUPPORTS_SMP
2261 select SYS_SUPPORTS_SCHED_SMT
2262 select MIPS_PERF_SHARED_TC_COUNTERS
2264 This is a kernel model which is known as SMVP. This is supported
2265 on cores with the MT ASE and uses the available VPEs to implement
2266 virtual processors which supports SMP. This is equivalent to the
2267 Intel Hyperthreading feature. For further information go to
2268 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2274 bool "SMT (multithreading) scheduler support"
2275 depends on SYS_SUPPORTS_SCHED_SMT
2278 SMT scheduler support improves the CPU scheduler's decision making
2279 when dealing with MIPS MT enabled cores at a cost of slightly
2280 increased overhead in some places. If unsure say N here.
2282 config SYS_SUPPORTS_SCHED_SMT
2285 config SYS_SUPPORTS_MULTITHREADING
2288 config MIPS_MT_FPAFF
2289 bool "Dynamic FPU affinity for FP-intensive threads"
2291 depends on MIPS_MT_SMP
2293 config MIPSR2_TO_R6_EMULATOR
2294 bool "MIPS R2-to-R6 emulator"
2295 depends on CPU_MIPSR6
2298 Choose this option if you want to run non-R6 MIPS userland code.
2299 Even if you say 'Y' here, the emulator will still be disabled by
2300 default. You can enable it using the 'mipsr2emu' kernel option.
2301 The only reason this is a build-time option is to save ~14K from the
2304 config MIPS_VPE_LOADER
2305 bool "VPE loader support."
2306 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2307 select CPU_MIPSR2_IRQ_VI
2308 select CPU_MIPSR2_IRQ_EI
2311 Includes a loader for loading an elf relocatable object
2312 onto another VPE and running it.
2314 config MIPS_VPE_LOADER_CMP
2317 depends on MIPS_VPE_LOADER && MIPS_CMP
2319 config MIPS_VPE_LOADER_MT
2322 depends on MIPS_VPE_LOADER && !MIPS_CMP
2324 config MIPS_VPE_LOADER_TOM
2325 bool "Load VPE program into memory hidden from linux"
2326 depends on MIPS_VPE_LOADER
2329 The loader can use memory that is present but has been hidden from
2330 Linux using the kernel command line option "mem=xxMB". It's up to
2331 you to ensure the amount you put in the option and the space your
2332 program requires is less or equal to the amount physically present.
2334 config MIPS_VPE_APSP_API
2335 bool "Enable support for AP/SP API (RTLX)"
2336 depends on MIPS_VPE_LOADER
2339 config MIPS_VPE_APSP_API_CMP
2342 depends on MIPS_VPE_APSP_API && MIPS_CMP
2344 config MIPS_VPE_APSP_API_MT
2347 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2350 bool "MIPS CMP framework support (DEPRECATED)"
2351 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2354 select SYS_SUPPORTS_SMP
2355 select WEAK_ORDERING
2358 Select this if you are using a bootloader which implements the "CMP
2359 framework" protocol (ie. YAMON) and want your kernel to make use of
2360 its ability to start secondary CPUs.
2362 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2366 bool "MIPS Coherent Processing System support"
2367 depends on SYS_SUPPORTS_MIPS_CPS
2370 select MIPS_CPS_PM if HOTPLUG_CPU
2372 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2373 select SYS_SUPPORTS_HOTPLUG_CPU
2374 select SYS_SUPPORTS_SMP
2375 select WEAK_ORDERING
2377 Select this if you wish to run an SMP kernel across multiple cores
2378 within a MIPS Coherent Processing System. When this option is
2379 enabled the kernel will probe for other cores and boot them with
2380 no external assistance. It is safe to enable this when hardware
2381 support is unavailable.
2394 config SB1_PASS_2_WORKAROUNDS
2396 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2399 config SB1_PASS_2_1_WORKAROUNDS
2401 depends on CPU_SB1 && CPU_SB1_PASS_2
2405 config ARCH_PHYS_ADDR_T_64BIT
2409 prompt "SmartMIPS or microMIPS ASE support"
2411 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2414 Select this if you want neither microMIPS nor SmartMIPS support
2416 config CPU_HAS_SMARTMIPS
2417 depends on SYS_SUPPORTS_SMARTMIPS
2420 SmartMIPS is a extension of the MIPS32 architecture aimed at
2421 increased security at both hardware and software level for
2422 smartcards. Enabling this option will allow proper use of the
2423 SmartMIPS instructions by Linux applications. However a kernel with
2424 this option will not work on a MIPS core without SmartMIPS core. If
2425 you don't know you probably don't have SmartMIPS and should say N
2428 config CPU_MICROMIPS
2429 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2432 When this option is enabled the kernel will be built using the
2438 bool "Support for the MIPS SIMD Architecture"
2439 depends on CPU_SUPPORTS_MSA
2440 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2442 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2443 and a set of SIMD instructions to operate on them. When this option
2444 is enabled the kernel will support allocating & switching MSA
2445 vector register contexts. If you know that your kernel will only be
2446 running on CPUs which do not support MSA or that your userland will
2447 not be making use of it then you may wish to say N here to reduce
2448 the size & complexity of your kernel.
2462 # Vectored interrupt mode is an R2 feature
2464 config CPU_MIPSR2_IRQ_VI
2468 # Extended interrupt mode is an R2 feature
2470 config CPU_MIPSR2_IRQ_EI
2475 depends on !CPU_R3000
2481 config CPU_DADDI_WORKAROUNDS
2484 config CPU_R4000_WORKAROUNDS
2486 select CPU_R4400_WORKAROUNDS
2488 config CPU_R4400_WORKAROUNDS
2491 config MIPS_ASID_SHIFT
2493 default 6 if CPU_R3000 || CPU_TX39XX
2494 default 4 if CPU_R8000
2497 config MIPS_ASID_BITS
2499 default 0 if MIPS_ASID_BITS_VARIABLE
2500 default 6 if CPU_R3000 || CPU_TX39XX
2503 config MIPS_ASID_BITS_VARIABLE
2507 # - Highmem only makes sense for the 32-bit kernel.
2508 # - The current highmem code will only work properly on physically indexed
2509 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2510 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2511 # moment we protect the user and offer the highmem option only on machines
2512 # where it's known to be safe. This will not offer highmem on a few systems
2513 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2514 # indexed CPUs but we're playing safe.
2515 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2516 # know they might have memory configurations that could make use of highmem
2520 bool "High Memory Support"
2521 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2523 config CPU_SUPPORTS_HIGHMEM
2526 config SYS_SUPPORTS_HIGHMEM
2529 config SYS_SUPPORTS_SMARTMIPS
2532 config SYS_SUPPORTS_MICROMIPS
2535 config SYS_SUPPORTS_MIPS16
2538 This option must be set if a kernel might be executed on a MIPS16-
2539 enabled CPU even if MIPS16 is not actually being used. In other
2540 words, it makes the kernel MIPS16-tolerant.
2542 config CPU_SUPPORTS_MSA
2545 config ARCH_FLATMEM_ENABLE
2547 depends on !NUMA && !CPU_LOONGSON2
2549 config ARCH_DISCONTIGMEM_ENABLE
2551 default y if SGI_IP27
2553 Say Y to support efficient handling of discontiguous physical memory,
2554 for architectures which are either NUMA (Non-Uniform Memory Access)
2555 or have huge holes in the physical address space for other reasons.
2556 See <file:Documentation/vm/numa> for more.
2558 config ARCH_SPARSEMEM_ENABLE
2560 select SPARSEMEM_STATIC
2564 depends on SYS_SUPPORTS_NUMA
2566 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2567 Access). This option improves performance on systems with more
2568 than two nodes; on two node systems it is generally better to
2569 leave it disabled; on single node systems disable this option
2572 config SYS_SUPPORTS_NUMA
2576 bool "Relocatable kernel"
2577 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2579 This builds a kernel image that retains relocation information
2580 so it can be loaded someplace besides the default 1MB.
2581 The relocations make the kernel binary about 15% larger,
2582 but are discarded at runtime
2584 config RELOCATION_TABLE_SIZE
2585 hex "Relocation table size"
2586 depends on RELOCATABLE
2587 range 0x0 0x01000000
2588 default "0x00100000"
2590 A table of relocation data will be appended to the kernel binary
2591 and parsed at boot to fix up the relocated kernel.
2593 This option allows the amount of space reserved for the table to be
2594 adjusted, although the default of 1Mb should be ok in most cases.
2596 The build will fail and a valid size suggested if this is too small.
2598 If unsure, leave at the default value.
2600 config RANDOMIZE_BASE
2601 bool "Randomize the address of the kernel image"
2602 depends on RELOCATABLE
2604 Randomizes the physical and virtual address at which the
2605 kernel image is loaded, as a security feature that
2606 deters exploit attempts relying on knowledge of the location
2607 of kernel internals.
2609 Entropy is generated using any coprocessor 0 registers available.
2611 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2615 config RANDOMIZE_BASE_MAX_OFFSET
2616 hex "Maximum kASLR offset" if EXPERT
2617 depends on RANDOMIZE_BASE
2618 range 0x0 0x40000000 if EVA || 64BIT
2619 range 0x0 0x08000000
2620 default "0x01000000"
2622 When kASLR is active, this provides the maximum offset that will
2623 be applied to the kernel image. It should be set according to the
2624 amount of physical RAM available in the target system minus
2625 PHYSICAL_START and must be a power of 2.
2627 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2628 EVA or 64-bit. The default is 16Mb.
2633 depends on NEED_MULTIPLE_NODES
2635 config HW_PERF_EVENTS
2636 bool "Enable hardware performance counter support for perf events"
2637 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2640 Enable hardware performance counter support for perf events. If
2641 disabled, perf events will use software events only.
2646 bool "Multi-Processing support"
2647 depends on SYS_SUPPORTS_SMP
2649 This enables support for systems with more than one CPU. If you have
2650 a system with only one CPU, say N. If you have a system with more
2651 than one CPU, say Y.
2653 If you say N here, the kernel will run on uni- and multiprocessor
2654 machines, but will use only one CPU of a multiprocessor machine. If
2655 you say Y here, the kernel will run on many, but not all,
2656 uniprocessor machines. On a uniprocessor machine, the kernel
2657 will run faster if you say N here.
2659 People using multiprocessor machines who say Y here should also say
2660 Y to "Enhanced Real Time Clock Support", below.
2662 See also the SMP-HOWTO available at
2663 <http://www.tldp.org/docs.html#howto>.
2665 If you don't know what to do here, say N.
2668 bool "Support for hot-pluggable CPUs"
2669 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2671 Say Y here to allow turning CPUs off and on. CPUs can be
2672 controlled through /sys/devices/system/cpu.
2673 (Note: power management support will enable this option
2674 automatically on SMP systems. )
2675 Say N if you want to disable CPU hotplug.
2680 config SYS_SUPPORTS_MIPS_CMP
2683 config SYS_SUPPORTS_MIPS_CPS
2686 config SYS_SUPPORTS_SMP
2689 config NR_CPUS_DEFAULT_4
2692 config NR_CPUS_DEFAULT_8
2695 config NR_CPUS_DEFAULT_16
2698 config NR_CPUS_DEFAULT_32
2701 config NR_CPUS_DEFAULT_64
2705 int "Maximum number of CPUs (2-256)"
2708 default "4" if NR_CPUS_DEFAULT_4
2709 default "8" if NR_CPUS_DEFAULT_8
2710 default "16" if NR_CPUS_DEFAULT_16
2711 default "32" if NR_CPUS_DEFAULT_32
2712 default "64" if NR_CPUS_DEFAULT_64
2714 This allows you to specify the maximum number of CPUs which this
2715 kernel will support. The maximum supported value is 32 for 32-bit
2716 kernel and 64 for 64-bit kernels; the minimum value which makes
2717 sense is 1 for Qemu (useful only for kernel debugging purposes)
2718 and 2 for all others.
2720 This is purely to save memory - each supported CPU adds
2721 approximately eight kilobytes to the kernel image. For best
2722 performance should round up your number of processors to the next
2725 config MIPS_PERF_SHARED_TC_COUNTERS
2729 # Timer Interrupt Frequency Configuration
2733 prompt "Timer frequency"
2736 Allows the configuration of the timer frequency.
2739 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2742 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2745 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2748 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2751 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2754 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2757 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2760 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2764 config SYS_SUPPORTS_24HZ
2767 config SYS_SUPPORTS_48HZ
2770 config SYS_SUPPORTS_100HZ
2773 config SYS_SUPPORTS_128HZ
2776 config SYS_SUPPORTS_250HZ
2779 config SYS_SUPPORTS_256HZ
2782 config SYS_SUPPORTS_1000HZ
2785 config SYS_SUPPORTS_1024HZ
2788 config SYS_SUPPORTS_ARBIT_HZ
2790 default y if !SYS_SUPPORTS_24HZ && \
2791 !SYS_SUPPORTS_48HZ && \
2792 !SYS_SUPPORTS_100HZ && \
2793 !SYS_SUPPORTS_128HZ && \
2794 !SYS_SUPPORTS_250HZ && \
2795 !SYS_SUPPORTS_256HZ && \
2796 !SYS_SUPPORTS_1000HZ && \
2797 !SYS_SUPPORTS_1024HZ
2803 default 100 if HZ_100
2804 default 128 if HZ_128
2805 default 250 if HZ_250
2806 default 256 if HZ_256
2807 default 1000 if HZ_1000
2808 default 1024 if HZ_1024
2811 def_bool HIGH_RES_TIMERS
2813 source "kernel/Kconfig.preempt"
2816 bool "Kexec system call"
2819 kexec is a system call that implements the ability to shutdown your
2820 current kernel, and to start another kernel. It is like a reboot
2821 but it is independent of the system firmware. And like a reboot
2822 you can start any kernel with it, not just Linux.
2824 The name comes from the similarity to the exec system call.
2826 It is an ongoing process to be certain the hardware in a machine
2827 is properly shutdown, so do not be surprised if this code does not
2828 initially work for you. As of this writing the exact hardware
2829 interface is strongly in flux, so no good recommendation can be
2833 bool "Kernel crash dumps"
2835 Generate crash dump after being started by kexec.
2836 This should be normally only set in special crash dump kernels
2837 which are loaded in the main kernel with kexec-tools into
2838 a specially reserved region and then later executed after
2839 a crash by kdump/kexec. The crash dump kernel must be compiled
2840 to a memory address not used by the main kernel or firmware using
2843 config PHYSICAL_START
2844 hex "Physical address where the kernel is loaded"
2845 default "0xffffffff84000000" if 64BIT
2846 default "0x84000000" if 32BIT
2847 depends on CRASH_DUMP
2849 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2850 If you plan to use kernel for capturing the crash dump change
2851 this value to start of the reserved region (the "X" value as
2852 specified in the "crashkernel=YM@XM" command line boot parameter
2853 passed to the panic-ed kernel).
2856 bool "Enable seccomp to safely compute untrusted bytecode"
2860 This kernel feature is useful for number crunching applications
2861 that may need to compute untrusted bytecode during their
2862 execution. By using pipes or other transports made available to
2863 the process as file descriptors supporting the read/write
2864 syscalls, it's possible to isolate those applications in
2865 their own address space using seccomp. Once seccomp is
2866 enabled via /proc/<pid>/seccomp, it cannot be disabled
2867 and the task is only allowed to execute a few safe syscalls
2868 defined by each seccomp mode.
2870 If unsure, say Y. Only embedded should say N here.
2872 config MIPS_O32_FP64_SUPPORT
2873 bool "Support for O32 binaries using 64-bit FP"
2874 depends on 32BIT || MIPS32_O32
2876 When this is enabled, the kernel will support use of 64-bit floating
2877 point registers with binaries using the O32 ABI along with the
2878 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2879 32-bit MIPS systems this support is at the cost of increasing the
2880 size and complexity of the compiled FPU emulator. Thus if you are
2881 running a MIPS32 system and know that none of your userland binaries
2882 will require 64-bit floating point, you may wish to reduce the size
2883 of your kernel & potentially improve FP emulation performance by
2886 Although binutils currently supports use of this flag the details
2887 concerning its effect upon the O32 ABI in userland are still being
2888 worked on. In order to avoid userland becoming dependant upon current
2889 behaviour before the details have been finalised, this option should
2890 be considered experimental and only enabled by those working upon
2898 select OF_EARLY_FLATTREE
2905 prompt "Kernel appended dtb support" if USE_OF
2906 default MIPS_NO_APPENDED_DTB
2908 config MIPS_NO_APPENDED_DTB
2911 Do not enable appended dtb support.
2913 config MIPS_ELF_APPENDED_DTB
2916 With this option, the boot code will look for a device tree binary
2917 DTB) included in the vmlinux ELF section .appended_dtb. By default
2918 it is empty and the DTB can be appended using binutils command
2921 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2923 This is meant as a backward compatiblity convenience for those
2924 systems with a bootloader that can't be upgraded to accommodate
2925 the documented boot protocol using a device tree.
2927 config MIPS_RAW_APPENDED_DTB
2928 bool "vmlinux.bin or vmlinuz.bin"
2930 With this option, the boot code will look for a device tree binary
2931 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2932 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2934 This is meant as a backward compatibility convenience for those
2935 systems with a bootloader that can't be upgraded to accommodate
2936 the documented boot protocol using a device tree.
2938 Beware that there is very little in terms of protection against
2939 this option being confused by leftover garbage in memory that might
2940 look like a DTB header after a reboot if no actual DTB is appended
2941 to vmlinux.bin. Do not leave this option active in a production kernel
2942 if you don't intend to always append a DTB.
2946 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2947 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2950 default MIPS_CMDLINE_FROM_BOOTLOADER
2952 config MIPS_CMDLINE_FROM_DTB
2954 bool "Dtb kernel arguments if available"
2956 config MIPS_CMDLINE_DTB_EXTEND
2958 bool "Extend dtb kernel arguments with bootloader arguments"
2960 config MIPS_CMDLINE_FROM_BOOTLOADER
2961 bool "Bootloader kernel arguments if available"
2963 config MIPS_CMDLINE_BUILTIN_EXTEND
2964 depends on CMDLINE_BOOL
2965 bool "Extend builtin kernel arguments with bootloader arguments"
2970 config LOCKDEP_SUPPORT
2974 config STACKTRACE_SUPPORT
2978 config HAVE_LATENCYTOP_SUPPORT
2982 config PGTABLE_LEVELS
2984 default 3 if 64BIT && !PAGE_SIZE_64KB
2987 source "init/Kconfig"
2989 source "kernel/Kconfig.freezer"
2991 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2999 bool "Support for PCI controller"
3000 depends on HW_HAS_PCI
3003 Find out whether you have a PCI motherboard. PCI is the name of a
3004 bus system, i.e. the way the CPU talks to the other stuff inside
3005 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3009 bool "Support for HT-linked PCI"
3011 depends on CPU_LOONGSON3
3015 Loongson family machines use Hyper-Transport bus for inter-core
3016 connection and device connection. The PCI bus is a subordinate
3017 linked at HT. Choose Y for Loongson-3 based machines.
3022 config PCI_DOMAINS_GENERIC
3025 config PCI_DRIVERS_GENERIC
3026 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3029 config PCI_DRIVERS_LEGACY
3030 def_bool !PCI_DRIVERS_GENERIC
3031 select NO_GENERIC_PCI_IOPORT_MAP
3033 source "drivers/pci/Kconfig"
3036 # ISA support is now enabled via select. Too many systems still have the one
3037 # or other ISA chip on the board that users don't know about so don't expect
3038 # users to choose the right thing ...
3045 depends on HW_HAS_EISA
3047 select GENERIC_ISA_DMA
3049 The Extended Industry Standard Architecture (EISA) bus was
3050 developed as an open alternative to the IBM MicroChannel bus.
3052 The EISA bus provided some of the features of the IBM MicroChannel
3053 bus while maintaining backward compatibility with cards made for
3054 the older ISA bus. The EISA bus saw limited use between 1988 and
3055 1995 when it was made obsolete by the PCI bus.
3057 Say Y here if you are building a kernel for an EISA-based machine.
3061 source "drivers/eisa/Kconfig"
3064 bool "TURBOchannel support"
3065 depends on MACH_DECSTATION
3067 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3068 processors. TURBOchannel programming specifications are available
3070 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3072 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3073 Linux driver support status is documented at:
3074 <http://www.linux-mips.org/wiki/DECstation>
3080 config ARCH_MMAP_RND_BITS_MIN
3084 config ARCH_MMAP_RND_BITS_MAX
3088 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3091 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3098 select MIPS_EXTERNAL_TIMER
3106 source "drivers/pcmcia/Kconfig"
3109 tristate "RapidIO support"
3113 If you say Y here, the kernel will include drivers and
3114 infrastructure code to support RapidIO interconnect devices.
3116 source "drivers/rapidio/Kconfig"
3120 menu "Executable file formats"
3122 source "fs/Kconfig.binfmt"
3127 config MIPS32_COMPAT
3133 config SYSVIPC_COMPAT
3137 bool "Kernel support for o32 binaries"
3139 select ARCH_WANT_OLD_COMPAT_IPC
3141 select MIPS32_COMPAT
3142 select SYSVIPC_COMPAT if SYSVIPC
3144 Select this option if you want to run o32 binaries. These are pure
3145 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3146 existing binaries are in this format.
3151 bool "Kernel support for n32 binaries"
3154 select MIPS32_COMPAT
3155 select SYSVIPC_COMPAT if SYSVIPC
3157 Select this option if you want to run n32 binaries. These are
3158 64-bit binaries using 32-bit quantities for addressing and certain
3159 data that would normally be 64-bit. They are used in special
3166 default y if MIPS32_O32 || MIPS32_N32
3171 menu "Power management options"
3173 config ARCH_HIBERNATION_POSSIBLE
3175 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3177 config ARCH_SUSPEND_POSSIBLE
3179 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3181 source "kernel/power/Kconfig"
3185 config MIPS_EXTERNAL_TIMER
3188 menu "CPU Power Management"
3190 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3191 source "drivers/cpufreq/Kconfig"
3194 source "drivers/cpuidle/Kconfig"
3198 source "net/Kconfig"
3200 source "drivers/Kconfig"
3202 source "drivers/firmware/Kconfig"
3206 source "arch/mips/Kconfig.debug"
3208 source "security/Kconfig"
3210 source "crypto/Kconfig"
3212 source "lib/Kconfig"
3214 source "arch/mips/kvm/Kconfig"