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
16 select HAVE_ARCH_COMPILER_H
18 select HAVE_ARCH_SECCOMP_FILTER
19 select HAVE_ARCH_TRACEHOOK
20 select HAVE_CBPF_JIT if !CPU_MICROMIPS
21 select HAVE_FUNCTION_TRACER
22 select HAVE_DYNAMIC_FTRACE
23 select HAVE_FTRACE_MCOUNT_RECORD
24 select HAVE_C_RECORDMCOUNT
25 select HAVE_FUNCTION_GRAPH_TRACER
27 select HAVE_KRETPROBES
28 select HAVE_SYSCALL_TRACEPOINTS
29 select HAVE_DEBUG_KMEMLEAK
30 select HAVE_SYSCALL_TRACEPOINTS
31 select ARCH_HAS_ELF_RANDOMIZE
32 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
33 select RTC_LIB if !MACH_LOONGSON64
34 select GENERIC_ATOMIC64 if !64BIT
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_DMA_API_DEBUG
37 select GENERIC_IRQ_PROBE
38 select GENERIC_IRQ_SHOW
39 select GENERIC_PCI_IOMAP
40 select HAVE_ARCH_JUMP_LABEL
41 select ARCH_WANT_IPC_PARSE_VERSION
42 select IRQ_FORCED_THREADING
44 select HAVE_MEMBLOCK_NODE_MAP
45 select ARCH_DISCARD_MEMBLOCK
46 select GENERIC_SMP_IDLE_THREAD
47 select BUILDTIME_EXTABLE_SORT
48 select GENERIC_CLOCKEVENTS
49 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
50 select GENERIC_CMOS_UPDATE
51 select HAVE_MOD_ARCH_SPECIFIC
54 select MODULES_USE_ELF_REL if MODULES
55 select MODULES_USE_ELF_RELA if MODULES && 64BIT
56 select CLONE_BACKWARDS
57 select HAVE_DEBUG_STACKOVERFLOW
58 select HAVE_CC_STACKPROTECTOR
59 select CPU_PM if CPU_IDLE
60 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
61 select ARCH_BINFMT_ELF_STATE
62 select SYSCTL_EXCEPTION_TRACE
63 select HAVE_VIRT_CPU_ACCOUNTING_GEN
64 select HAVE_IRQ_TIME_ACCOUNTING
65 select GENERIC_TIME_VSYSCALL
66 select ARCH_CLOCKSOURCE_DATA
67 select HANDLE_DOMAIN_IRQ
68 select HAVE_EXIT_THREAD
69 select HAVE_REGS_AND_STACK_ACCESS_API
70 select HAVE_ARCH_HARDENED_USERCOPY
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 CPU_BIG_ENDIAN
118 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
119 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
120 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
121 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
122 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_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
270 select SYS_HAS_CPU_BMIPS32_3300
271 select SYS_HAS_CPU_BMIPS4350
272 select SYS_HAS_CPU_BMIPS4380
276 select MIPS_L1_CACHE_SHIFT_4
278 Support for BCM63XX based boards
285 select DMA_NONCOHERENT
291 select PCI_GT64XXX_PCI0
293 select SYS_HAS_CPU_NEVADA
294 select SYS_HAS_EARLY_PRINTK
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_64BIT_KERNEL
297 select SYS_SUPPORTS_LITTLE_ENDIAN
298 select USE_GENERIC_EARLY_PRINTK_8250
300 config MACH_DECSTATION
304 select CEVT_R4K if CPU_R4X00
306 select CSRC_R4K if CPU_R4X00
307 select CPU_DADDI_WORKAROUNDS if 64BIT
308 select CPU_R4000_WORKAROUNDS if 64BIT
309 select CPU_R4400_WORKAROUNDS if 64BIT
310 select DMA_NONCOHERENT
313 select SYS_HAS_CPU_R3000
314 select SYS_HAS_CPU_R4X00
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_64BIT_KERNEL
317 select SYS_SUPPORTS_LITTLE_ENDIAN
318 select SYS_SUPPORTS_128HZ
319 select SYS_SUPPORTS_256HZ
320 select SYS_SUPPORTS_1024HZ
321 select MIPS_L1_CACHE_SHIFT_4
323 This enables support for DEC's MIPS based workstations. For details
324 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
325 DECstation porting pages on <http://decstation.unix-ag.org/>.
327 If you have one of the following DECstation Models you definitely
328 want to choose R4xx0 for the CPU Type:
335 otherwise choose R3000.
338 bool "Jazz family of machines"
341 select ARCH_MAY_HAVE_PC_FDC
344 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
345 select GENERIC_ISA_DMA
346 select HAVE_PCSPKR_PLATFORM
351 select SYS_HAS_CPU_R4X00
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL
354 select SYS_SUPPORTS_100HZ
356 This a family of machines based on the MIPS R4030 chipset which was
357 used by several vendors to build RISC/os and Windows NT workstations.
358 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
359 Olivetti M700-10 workstations.
362 bool "Ingenic SoC based machines"
363 select SYS_SUPPORTS_32BIT_KERNEL
364 select SYS_SUPPORTS_LITTLE_ENDIAN
365 select SYS_SUPPORTS_ZBOOT_UART16550
366 select DMA_NONCOHERENT
370 select GENERIC_IRQ_CHIP
376 bool "Lantiq based platforms"
377 select DMA_NONCOHERENT
381 select SYS_HAS_CPU_MIPS32_R1
382 select SYS_HAS_CPU_MIPS32_R2
383 select SYS_SUPPORTS_BIG_ENDIAN
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_MIPS16
386 select SYS_SUPPORTS_MULTITHREADING
387 select SYS_HAS_EARLY_PRINTK
394 select PINCTRL_LANTIQ
395 select ARCH_HAS_RESET_CONTROLLER
396 select RESET_CONTROLLER
399 bool "LASAT Networks platforms"
403 select DMA_NONCOHERENT
404 select SYS_HAS_EARLY_PRINTK
407 select PCI_GT64XXX_PCI0
409 select R5000_CPU_SCACHE
410 select SYS_HAS_CPU_R5000
411 select SYS_SUPPORTS_32BIT_KERNEL
412 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
413 select SYS_SUPPORTS_LITTLE_ENDIAN
415 config MACH_LOONGSON32
416 bool "Loongson-1 family of machines"
417 select SYS_SUPPORTS_ZBOOT
419 This enables support for the Loongson-1 family of machines.
421 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
422 the Institute of Computing Technology (ICT), Chinese Academy of
425 config MACH_LOONGSON64
426 bool "Loongson-2/3 family of machines"
427 select SYS_SUPPORTS_ZBOOT
429 This enables the support of Loongson-2/3 family of machines.
431 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
432 family of multi-core CPUs. They are both 64-bit general-purpose
433 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
434 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
435 in the People's Republic of China. The chief architect is Professor
438 config MACH_PISTACHIO
439 bool "IMG Pistachio SoC based boards"
443 select CLKSRC_MIPS_GIC
446 select DMA_NONCOHERENT
451 select MIPS_CPU_SCACHE
455 select SYS_HAS_CPU_MIPS32_R2
456 select SYS_SUPPORTS_32BIT_KERNEL
457 select SYS_SUPPORTS_LITTLE_ENDIAN
458 select SYS_SUPPORTS_MIPS_CPS
459 select SYS_SUPPORTS_MULTITHREADING
460 select SYS_SUPPORTS_RELOCATABLE
461 select SYS_SUPPORTS_ZBOOT
462 select SYS_HAS_EARLY_PRINTK
463 select USE_GENERIC_EARLY_PRINTK_8250
466 This enables support for the IMG Pistachio SoC platform.
469 bool "MIPSfpga Xilinx based boards"
479 select MIPS_CPU_SCACHE
480 select SYS_HAS_EARLY_PRINTK
481 select SYS_HAS_CPU_MIPS32_R2
482 select SYS_SUPPORTS_32BIT_KERNEL
483 select SYS_SUPPORTS_LITTLE_ENDIAN
484 select SYS_SUPPORTS_ZBOOT_UART16550
486 select USE_GENERIC_EARLY_PRINTK_8250
488 This enables support for the IMG University Program MIPSfpga platform.
491 bool "MIPS Malta board"
492 select ARCH_MAY_HAVE_PC_FDC
498 select CLKSRC_MIPS_GIC
500 select DMA_MAYBE_COHERENT
501 select GENERIC_ISA_DMA
502 select HAVE_PCSPKR_PLATFORM
509 select MIPS_CPU_SCACHE
510 select MIPS_L1_CACHE_SHIFT_6
511 select PCI_GT64XXX_PCI0
515 select SYS_HAS_CPU_MIPS32_R1
516 select SYS_HAS_CPU_MIPS32_R2
517 select SYS_HAS_CPU_MIPS32_R3_5
518 select SYS_HAS_CPU_MIPS32_R5
519 select SYS_HAS_CPU_MIPS32_R6
520 select SYS_HAS_CPU_MIPS64_R1
521 select SYS_HAS_CPU_MIPS64_R2
522 select SYS_HAS_CPU_MIPS64_R6
523 select SYS_HAS_CPU_NEVADA
524 select SYS_HAS_CPU_RM7000
525 select SYS_SUPPORTS_32BIT_KERNEL
526 select SYS_SUPPORTS_64BIT_KERNEL
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_HIGHMEM
529 select SYS_SUPPORTS_LITTLE_ENDIAN
530 select SYS_SUPPORTS_MICROMIPS
531 select SYS_SUPPORTS_MIPS_CMP
532 select SYS_SUPPORTS_MIPS_CPS
533 select SYS_SUPPORTS_MIPS16
534 select SYS_SUPPORTS_MULTITHREADING
535 select SYS_SUPPORTS_SMARTMIPS
536 select SYS_SUPPORTS_ZBOOT
537 select SYS_SUPPORTS_RELOCATABLE
540 select ZONE_DMA32 if 64BIT
544 This enables support for the MIPS Technologies Malta evaluation
548 bool "Microchip PIC32 Family"
550 This enables support for the Microchip PIC32 family of platforms.
552 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
556 bool "NEC EMMA2RH Mark-eins board"
560 This enables support for the NEC Electronics Mark-eins boards.
563 bool "NEC VR4100 series based machines"
566 select SYS_HAS_CPU_VR41XX
567 select SYS_SUPPORTS_MIPS16
571 bool "NXP STB220 board"
574 Support for NXP Semiconductors STB220 Development Board.
581 Support for NXP Semiconductors STB225 Development Board.
584 bool "PMC-Sierra MSP chipsets"
587 select DMA_NONCOHERENT
589 select NO_EXCEPT_FILL
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_BIG_ENDIAN
595 select SYS_SUPPORTS_MIPS16
598 select SERIAL_8250_CONSOLE
599 select USB_EHCI_BIG_ENDIAN_MMIO
600 select USB_EHCI_BIG_ENDIAN_DESC
602 This adds support for the PMC-Sierra family of Multi-Service
603 Processor System-On-A-Chips. These parts include a number
604 of integrated peripherals, interfaces and DSPs in addition to
605 a variety of MIPS cores.
608 bool "Ralink based machines"
612 select DMA_NONCOHERENT
615 select SYS_HAS_CPU_MIPS32_R1
616 select SYS_HAS_CPU_MIPS32_R2
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_MIPS16
620 select SYS_HAS_EARLY_PRINTK
622 select ARCH_HAS_RESET_CONTROLLER
623 select RESET_CONTROLLER
626 bool "SGI IP22 (Indy/Indigo2)"
632 select DEFAULT_SGI_PARTITION
633 select DMA_NONCOHERENT
637 select IP22_CPU_SCACHE
639 select GENERIC_ISA_DMA_SUPPORT_BROKEN
641 select SGI_HAS_INDYDOG
647 select SYS_HAS_CPU_R4X00
648 select SYS_HAS_CPU_R5000
650 # Disable EARLY_PRINTK for now since it leads to overwritten prom
651 # memory during early boot on some machines.
653 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
654 # for a more details discussion
656 # select SYS_HAS_EARLY_PRINTK
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_64BIT_KERNEL
659 select SYS_SUPPORTS_BIG_ENDIAN
660 select MIPS_L1_CACHE_SHIFT_7
662 This are the SGI Indy, Challenge S and Indigo2, as well as certain
663 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
664 that runs on these, say Y here.
667 bool "SGI IP27 (Origin200/2000)"
671 select DEFAULT_SGI_PARTITION
673 select SYS_HAS_EARLY_PRINTK
675 select NR_CPUS_DEFAULT_64
676 select SYS_HAS_CPU_R10000
677 select SYS_SUPPORTS_64BIT_KERNEL
678 select SYS_SUPPORTS_BIG_ENDIAN
679 select SYS_SUPPORTS_NUMA
680 select SYS_SUPPORTS_SMP
681 select MIPS_L1_CACHE_SHIFT_7
683 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
684 workstations. To compile a Linux kernel that runs on these, say Y
688 bool "SGI IP28 (Indigo2 R10k)"
694 select DEFAULT_SGI_PARTITION
695 select DMA_NONCOHERENT
696 select GENERIC_ISA_DMA_SUPPORT_BROKEN
702 select SGI_HAS_INDYDOG
708 select SYS_HAS_CPU_R10000
710 # Disable EARLY_PRINTK for now since it leads to overwritten prom
711 # memory during early boot on some machines.
713 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
714 # for a more details discussion
716 # select SYS_HAS_EARLY_PRINTK
717 select SYS_SUPPORTS_64BIT_KERNEL
718 select SYS_SUPPORTS_BIG_ENDIAN
719 select MIPS_L1_CACHE_SHIFT_7
721 This is the SGI Indigo2 with R10000 processor. To compile a Linux
722 kernel that runs on these, say Y here.
731 select DMA_NONCOHERENT
734 select R5000_CPU_SCACHE
735 select RM7000_CPU_SCACHE
736 select SYS_HAS_CPU_R5000
737 select SYS_HAS_CPU_R10000 if BROKEN
738 select SYS_HAS_CPU_RM7000
739 select SYS_HAS_CPU_NEVADA
740 select SYS_SUPPORTS_64BIT_KERNEL
741 select SYS_SUPPORTS_BIG_ENDIAN
743 If you want this kernel to run on SGI O2 workstation, say Y here.
746 bool "Sibyte BCM91120C-CRhine"
749 select SIBYTE_BCM1120
751 select SYS_HAS_CPU_SB1
752 select SYS_SUPPORTS_BIG_ENDIAN
753 select SYS_SUPPORTS_LITTLE_ENDIAN
756 bool "Sibyte BCM91120x-Carmel"
759 select SIBYTE_BCM1120
761 select SYS_HAS_CPU_SB1
762 select SYS_SUPPORTS_BIG_ENDIAN
763 select SYS_SUPPORTS_LITTLE_ENDIAN
766 bool "Sibyte BCM91125C-CRhone"
769 select SIBYTE_BCM1125
771 select SYS_HAS_CPU_SB1
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select SYS_SUPPORTS_HIGHMEM
774 select SYS_SUPPORTS_LITTLE_ENDIAN
777 bool "Sibyte BCM91125E-Rhone"
780 select SIBYTE_BCM1125H
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_LITTLE_ENDIAN
787 bool "Sibyte BCM91250A-SWARM"
790 select HAVE_PATA_PLATFORM
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
797 select ZONE_DMA32 if 64BIT
799 config SIBYTE_LITTLESUR
800 bool "Sibyte BCM91250C2-LittleSur"
803 select HAVE_PATA_PLATFORM
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_HIGHMEM
809 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select ZONE_DMA32 if 64BIT
812 config SIBYTE_SENTOSA
813 bool "Sibyte BCM91250E-Sentosa"
818 select SYS_HAS_CPU_SB1
819 select SYS_SUPPORTS_BIG_ENDIAN
820 select SYS_SUPPORTS_LITTLE_ENDIAN
823 bool "Sibyte BCM91480B-BigSur"
826 select NR_CPUS_DEFAULT_4
827 select SIBYTE_BCM1x80
829 select SYS_HAS_CPU_SB1
830 select SYS_SUPPORTS_BIG_ENDIAN
831 select SYS_SUPPORTS_HIGHMEM
832 select SYS_SUPPORTS_LITTLE_ENDIAN
833 select ZONE_DMA32 if 64BIT
836 bool "SNI RM200/300/400"
837 select FW_ARC if CPU_LITTLE_ENDIAN
838 select FW_ARC32 if CPU_LITTLE_ENDIAN
839 select FW_SNIPROM if CPU_BIG_ENDIAN
840 select ARCH_MAY_HAVE_PC_FDC
844 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
845 select DMA_NONCOHERENT
846 select GENERIC_ISA_DMA
847 select HAVE_PCSPKR_PLATFORM
854 select MIPS_L1_CACHE_SHIFT_6
855 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
856 select SYS_HAS_CPU_R4X00
857 select SYS_HAS_CPU_R5000
858 select SYS_HAS_CPU_R10000
859 select R5000_CPU_SCACHE
860 select SYS_HAS_EARLY_PRINTK
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select SYS_SUPPORTS_BIG_ENDIAN
864 select SYS_SUPPORTS_HIGHMEM
865 select SYS_SUPPORTS_LITTLE_ENDIAN
867 The SNI RM200/300/400 are MIPS-based machines manufactured by
868 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
869 Technology and now in turn merged with Fujitsu. Say Y here to
870 support this machine type.
873 bool "Toshiba TX39 series based machines"
876 bool "Toshiba TX49 series based machines"
878 config MIKROTIK_RB532
879 bool "Mikrotik RB532 boards"
882 select DMA_NONCOHERENT
885 select SYS_HAS_CPU_MIPS32_R1
886 select SYS_SUPPORTS_32BIT_KERNEL
887 select SYS_SUPPORTS_LITTLE_ENDIAN
891 select MIPS_L1_CACHE_SHIFT_4
893 Support the Mikrotik(tm) RouterBoard 532 series,
894 based on the IDT RC32434 SoC.
896 config CAVIUM_OCTEON_SOC
897 bool "Cavium Networks Octeon SoC based boards"
899 select ARCH_PHYS_ADDR_T_64BIT
901 select SYS_SUPPORTS_64BIT_KERNEL
902 select SYS_SUPPORTS_BIG_ENDIAN
904 select EDAC_ATOMIC_SCRUB
905 select SYS_SUPPORTS_LITTLE_ENDIAN
906 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
907 select SYS_HAS_EARLY_PRINTK
908 select SYS_HAS_CPU_CAVIUM_OCTEON
915 select ARCH_SPARSEMEM_ENABLE
916 select SYS_SUPPORTS_SMP
917 select NR_CPUS_DEFAULT_16
919 select MTD_COMPLEX_MAPPINGS
921 This option supports all of the Octeon reference boards from Cavium
922 Networks. It builds a kernel that dynamically determines the Octeon
923 CPU type and supports all known board reference implementations.
924 Some of the supported boards are:
931 Say Y here for most Octeon reference boards.
934 bool "Netlogic XLR/XLS based systems"
937 select SYS_HAS_CPU_XLR
938 select SYS_SUPPORTS_SMP
941 select SYS_SUPPORTS_32BIT_KERNEL
942 select SYS_SUPPORTS_64BIT_KERNEL
943 select ARCH_PHYS_ADDR_T_64BIT
944 select SYS_SUPPORTS_BIG_ENDIAN
945 select SYS_SUPPORTS_HIGHMEM
947 select NR_CPUS_DEFAULT_32
951 select ZONE_DMA32 if 64BIT
953 select SYS_HAS_EARLY_PRINTK
954 select SYS_SUPPORTS_ZBOOT
955 select SYS_SUPPORTS_ZBOOT_UART16550
957 Support for systems based on Netlogic XLR and XLS processors.
958 Say Y here if you have a XLR or XLS based board.
961 bool "Netlogic XLP based systems"
964 select SYS_HAS_CPU_XLP
965 select SYS_SUPPORTS_SMP
967 select SYS_SUPPORTS_32BIT_KERNEL
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select ARCH_PHYS_ADDR_T_64BIT
971 select SYS_SUPPORTS_BIG_ENDIAN
972 select SYS_SUPPORTS_LITTLE_ENDIAN
973 select SYS_SUPPORTS_HIGHMEM
975 select NR_CPUS_DEFAULT_32
979 select ZONE_DMA32 if 64BIT
981 select SYS_HAS_EARLY_PRINTK
983 select SYS_SUPPORTS_ZBOOT
984 select SYS_SUPPORTS_ZBOOT_UART16550
986 This board is based on Netlogic XLP Processor.
987 Say Y here if you have a XLP based board.
990 bool "Para-Virtualized guest system"
994 select SYS_SUPPORTS_64BIT_KERNEL
995 select SYS_SUPPORTS_32BIT_KERNEL
996 select SYS_SUPPORTS_BIG_ENDIAN
997 select SYS_SUPPORTS_SMP
998 select NR_CPUS_DEFAULT_4
999 select SYS_HAS_EARLY_PRINTK
1000 select SYS_HAS_CPU_MIPS32_R2
1001 select SYS_HAS_CPU_MIPS64_R2
1002 select SYS_HAS_CPU_CAVIUM_OCTEON
1004 select SWAP_IO_SPACE
1006 This option supports guest running under ????
1010 source "arch/mips/alchemy/Kconfig"
1011 source "arch/mips/ath25/Kconfig"
1012 source "arch/mips/ath79/Kconfig"
1013 source "arch/mips/bcm47xx/Kconfig"
1014 source "arch/mips/bcm63xx/Kconfig"
1015 source "arch/mips/bmips/Kconfig"
1016 source "arch/mips/generic/Kconfig"
1017 source "arch/mips/jazz/Kconfig"
1018 source "arch/mips/jz4740/Kconfig"
1019 source "arch/mips/lantiq/Kconfig"
1020 source "arch/mips/lasat/Kconfig"
1021 source "arch/mips/pic32/Kconfig"
1022 source "arch/mips/pistachio/Kconfig"
1023 source "arch/mips/pmcs-msp71xx/Kconfig"
1024 source "arch/mips/ralink/Kconfig"
1025 source "arch/mips/sgi-ip27/Kconfig"
1026 source "arch/mips/sibyte/Kconfig"
1027 source "arch/mips/txx9/Kconfig"
1028 source "arch/mips/vr41xx/Kconfig"
1029 source "arch/mips/cavium-octeon/Kconfig"
1030 source "arch/mips/loongson32/Kconfig"
1031 source "arch/mips/loongson64/Kconfig"
1032 source "arch/mips/netlogic/Kconfig"
1033 source "arch/mips/paravirt/Kconfig"
1034 source "arch/mips/xilfpga/Kconfig"
1038 config RWSEM_GENERIC_SPINLOCK
1042 config RWSEM_XCHGADD_ALGORITHM
1045 config ARCH_HAS_ILOG2_U32
1049 config ARCH_HAS_ILOG2_U64
1053 config GENERIC_HWEIGHT
1057 config GENERIC_CALIBRATE_DELAY
1061 config SCHED_OMIT_FRAME_POINTER
1066 # Select some configuration options automatically based on user selections.
1071 config ARCH_MAY_HAVE_PC_FDC
1107 config MIPS_CLOCK_VSYSCALL
1108 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1117 config ARCH_DMA_ADDR_T_64BIT
1118 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1120 config ARCH_SUPPORTS_UPROBES
1123 config DMA_MAYBE_COHERENT
1124 select DMA_NONCOHERENT
1127 config DMA_PERDEV_COHERENT
1129 select DMA_MAYBE_COHERENT
1134 config DMA_NONCOHERENT
1136 select NEED_DMA_MAP_STATE
1138 config NEED_DMA_MAP_STATE
1141 config SYS_HAS_EARLY_PRINTK
1144 config SYS_SUPPORTS_HOTPLUG_CPU
1147 config MIPS_BONITO64
1162 config NO_IOPORT_MAP
1168 config GENERIC_ISA_DMA
1170 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1173 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1175 select GENERIC_ISA_DMA
1180 config HOLES_IN_ZONE
1183 config SYS_SUPPORTS_RELOCATABLE
1186 Selected if the platform supports relocating the kernel.
1187 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1188 to allow access to command line and entropy sources.
1191 # Endianness selection. Sufficiently obscure so many users don't know what to
1192 # answer,so we try hard to limit the available choices. Also the use of a
1193 # choice statement should be more obvious to the user.
1196 prompt "Endianness selection"
1198 Some MIPS machines can be configured for either little or big endian
1199 byte order. These modes require different kernels and a different
1200 Linux distribution. In general there is one preferred byteorder for a
1201 particular system but some systems are just as commonly used in the
1202 one or the other endianness.
1204 config CPU_BIG_ENDIAN
1206 depends on SYS_SUPPORTS_BIG_ENDIAN
1208 config CPU_LITTLE_ENDIAN
1209 bool "Little endian"
1210 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1217 config SYS_SUPPORTS_APM_EMULATION
1220 config SYS_SUPPORTS_BIG_ENDIAN
1223 config SYS_SUPPORTS_LITTLE_ENDIAN
1226 config SYS_SUPPORTS_HUGETLBFS
1228 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1231 config MIPS_HUGE_TLB_SUPPORT
1232 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1249 config PCI_GT64XXX_PCI0
1252 config NO_EXCEPT_FILL
1259 select DMA_NONCOHERENT
1261 select SWAP_IO_SPACE
1262 select SYS_HAS_CPU_R5500
1263 select SYS_SUPPORTS_32BIT_KERNEL
1264 select SYS_SUPPORTS_64BIT_KERNEL
1265 select SYS_SUPPORTS_BIG_ENDIAN
1272 select DMA_NONCOHERENT
1273 select SYS_HAS_CPU_MIPS32_R2
1274 select SYS_SUPPORTS_32BIT_KERNEL
1275 select SYS_SUPPORTS_LITTLE_ENDIAN
1276 select SYS_SUPPORTS_BIG_ENDIAN
1277 select SYS_SUPPORTS_MIPS16
1278 select CPU_MIPSR2_IRQ_VI
1287 config SWAP_IO_SPACE
1290 config SGI_HAS_INDYDOG
1302 config SGI_HAS_ZILOG
1305 config SGI_HAS_I8042
1308 config DEFAULT_SGI_PARTITION
1320 config MIPS_L1_CACHE_SHIFT_4
1323 config MIPS_L1_CACHE_SHIFT_5
1326 config MIPS_L1_CACHE_SHIFT_6
1329 config MIPS_L1_CACHE_SHIFT_7
1332 config MIPS_L1_CACHE_SHIFT
1334 default "7" if MIPS_L1_CACHE_SHIFT_7
1335 default "6" if MIPS_L1_CACHE_SHIFT_6
1336 default "5" if MIPS_L1_CACHE_SHIFT_5
1337 default "4" if MIPS_L1_CACHE_SHIFT_4
1340 config HAVE_STD_PC_SERIAL_PORT
1344 bool "ARC console support"
1345 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1349 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1354 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1363 menu "CPU selection"
1369 config CPU_LOONGSON3
1370 bool "Loongson 3 CPU"
1371 depends on SYS_HAS_CPU_LOONGSON3
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1374 select CPU_SUPPORTS_HUGEPAGES
1375 select WEAK_ORDERING
1376 select WEAK_REORDERING_BEYOND_LLSC
1377 select MIPS_PGD_C0_CONTEXT
1378 select MIPS_L1_CACHE_SHIFT_6
1379 select MIPS_FP_SUPPORT
1382 The Loongson 3 processor implements the MIPS64R2 instruction
1383 set with many extensions.
1385 config LOONGSON3_ENHANCEMENT
1386 bool "New Loongson 3 CPU Enhancements"
1389 select CPU_HAS_PREFETCH
1390 depends on CPU_LOONGSON3
1392 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1393 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1394 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1395 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1396 Fast TLB refill support, etc.
1398 This option enable those enhancements which are not probed at run
1399 time. If you want a generic kernel to run on all Loongson 3 machines,
1400 please say 'N' here. If you want a high-performance kernel to run on
1401 new Loongson 3 machines only, please say 'Y' here.
1403 config CPU_LOONGSON2E
1405 depends on SYS_HAS_CPU_LOONGSON2E
1406 select CPU_LOONGSON2
1408 The Loongson 2E processor implements the MIPS III instruction set
1409 with many extensions.
1411 It has an internal FPGA northbridge, which is compatible to
1414 config CPU_LOONGSON2F
1416 depends on SYS_HAS_CPU_LOONGSON2F
1417 select CPU_LOONGSON2
1420 The Loongson 2F processor implements the MIPS III instruction set
1421 with many extensions.
1423 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1424 have a similar programming interface with FPGA northbridge used in
1427 config CPU_LOONGSON1B
1429 depends on SYS_HAS_CPU_LOONGSON1B
1430 select CPU_LOONGSON1
1431 select LEDS_GPIO_REGISTER
1433 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1434 release 2 instruction set.
1436 config CPU_LOONGSON1C
1438 depends on SYS_HAS_CPU_LOONGSON1C
1439 select CPU_LOONGSON1
1440 select ARCH_WANT_OPTIONAL_GPIOLIB
1441 select LEDS_GPIO_REGISTER
1443 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1444 release 2 instruction set.
1446 config CPU_MIPS32_R1
1447 bool "MIPS32 Release 1"
1448 depends on SYS_HAS_CPU_MIPS32_R1
1449 select CPU_HAS_PREFETCH
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1453 Choose this option to build a kernel for release 1 or later of the
1454 MIPS32 architecture. Most modern embedded systems with a 32-bit
1455 MIPS processor are based on a MIPS32 processor. If you know the
1456 specific type of processor in your system, choose those that one
1457 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1458 Release 2 of the MIPS32 architecture is available since several
1459 years so chances are you even have a MIPS32 Release 2 processor
1460 in which case you should choose CPU_MIPS32_R2 instead for better
1463 config CPU_MIPS32_R2
1464 bool "MIPS32 Release 2"
1465 depends on SYS_HAS_CPU_MIPS32_R2
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_MSA
1472 Choose this option to build a kernel for release 2 or later of the
1473 MIPS32 architecture. Most modern embedded systems with a 32-bit
1474 MIPS processor are based on a MIPS32 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1478 config CPU_MIPS32_R6
1479 bool "MIPS32 Release 6"
1480 depends on SYS_HAS_CPU_MIPS32_R6
1481 select CPU_HAS_PREFETCH
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_HIGHMEM
1484 select CPU_SUPPORTS_MSA
1487 select MIPS_O32_FP64_SUPPORT
1489 Choose this option to build a kernel for release 6 or later of the
1490 MIPS32 architecture. New MIPS processors, starting with the Warrior
1491 family, are based on a MIPS32r6 processor. If you own an older
1492 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1494 config CPU_MIPS64_R1
1495 bool "MIPS64 Release 1"
1496 depends on SYS_HAS_CPU_MIPS64_R1
1497 select CPU_HAS_PREFETCH
1498 select CPU_SUPPORTS_32BIT_KERNEL
1499 select CPU_SUPPORTS_64BIT_KERNEL
1500 select CPU_SUPPORTS_HIGHMEM
1501 select CPU_SUPPORTS_HUGEPAGES
1503 Choose this option to build a kernel for release 1 or later of the
1504 MIPS64 architecture. Many modern embedded systems with a 64-bit
1505 MIPS processor are based on a MIPS64 processor. If you know the
1506 specific type of processor in your system, choose those that one
1507 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1508 Release 2 of the MIPS64 architecture is available since several
1509 years so chances are you even have a MIPS64 Release 2 processor
1510 in which case you should choose CPU_MIPS64_R2 instead for better
1513 config CPU_MIPS64_R2
1514 bool "MIPS64 Release 2"
1515 depends on SYS_HAS_CPU_MIPS64_R2
1516 select CPU_HAS_PREFETCH
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_HUGEPAGES
1521 select CPU_SUPPORTS_MSA
1524 Choose this option to build a kernel for release 2 or later of the
1525 MIPS64 architecture. Many modern embedded systems with a 64-bit
1526 MIPS processor are based on a MIPS64 processor. If you know the
1527 specific type of processor in your system, choose those that one
1528 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1530 config CPU_MIPS64_R6
1531 bool "MIPS64 Release 6"
1532 depends on SYS_HAS_CPU_MIPS64_R6
1533 select CPU_HAS_PREFETCH
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_64BIT_KERNEL
1536 select CPU_SUPPORTS_HIGHMEM
1537 select CPU_SUPPORTS_MSA
1539 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1542 Choose this option to build a kernel for release 6 or later of the
1543 MIPS64 architecture. New MIPS processors, starting with the Warrior
1544 family, are based on a MIPS64r6 processor. If you own an older
1545 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1549 depends on SYS_HAS_CPU_R3000
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select CPU_SUPPORTS_HIGHMEM
1554 Please make sure to pick the right CPU type. Linux/MIPS is not
1555 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1556 *not* work on R4000 machines and vice versa. However, since most
1557 of the supported machines have an R4000 (or similar) CPU, R4x00
1558 might be a safe bet. If the resulting kernel does not work,
1559 try to recompile with R3000.
1563 depends on SYS_HAS_CPU_TX39XX
1564 select CPU_SUPPORTS_32BIT_KERNEL
1568 depends on SYS_HAS_CPU_VR41XX
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1572 The options selects support for the NEC VR4100 series of processors.
1573 Only choose this option if you have one of these processors as a
1574 kernel built with this option will not run on any other type of
1575 processor or vice versa.
1579 depends on SYS_HAS_CPU_R4300
1580 select CPU_SUPPORTS_32BIT_KERNEL
1581 select CPU_SUPPORTS_64BIT_KERNEL
1583 MIPS Technologies R4300-series processors.
1587 depends on SYS_HAS_CPU_R4X00
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1592 MIPS Technologies R4000-series processors other than 4300, including
1593 the R4000, R4400, R4600, and 4700.
1597 depends on SYS_HAS_CPU_TX49XX
1598 select CPU_HAS_PREFETCH
1599 select CPU_SUPPORTS_32BIT_KERNEL
1600 select CPU_SUPPORTS_64BIT_KERNEL
1601 select CPU_SUPPORTS_HUGEPAGES
1605 depends on SYS_HAS_CPU_R5000
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HUGEPAGES
1610 MIPS Technologies R5000-series processors other than the Nevada.
1614 depends on SYS_HAS_CPU_R5432
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HUGEPAGES
1621 depends on SYS_HAS_CPU_R5500
1622 select CPU_SUPPORTS_32BIT_KERNEL
1623 select CPU_SUPPORTS_64BIT_KERNEL
1624 select CPU_SUPPORTS_HUGEPAGES
1626 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1631 depends on SYS_HAS_CPU_R6000
1632 select CPU_SUPPORTS_32BIT_KERNEL
1634 MIPS Technologies R6000 and R6000A series processors. Note these
1635 processors are extremely rare and the support for them is incomplete.
1639 depends on SYS_HAS_CPU_NEVADA
1640 select CPU_SUPPORTS_32BIT_KERNEL
1641 select CPU_SUPPORTS_64BIT_KERNEL
1642 select CPU_SUPPORTS_HUGEPAGES
1644 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1648 depends on SYS_HAS_CPU_R8000
1649 select CPU_HAS_PREFETCH
1650 select CPU_SUPPORTS_64BIT_KERNEL
1652 MIPS Technologies R8000 processors. Note these processors are
1653 uncommon and the support for them is incomplete.
1657 depends on SYS_HAS_CPU_R10000
1658 select CPU_HAS_PREFETCH
1659 select CPU_SUPPORTS_32BIT_KERNEL
1660 select CPU_SUPPORTS_64BIT_KERNEL
1661 select CPU_SUPPORTS_HIGHMEM
1662 select CPU_SUPPORTS_HUGEPAGES
1664 MIPS Technologies R10000-series processors.
1668 depends on SYS_HAS_CPU_RM7000
1669 select CPU_HAS_PREFETCH
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1677 depends on SYS_HAS_CPU_SB1
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select CPU_SUPPORTS_64BIT_KERNEL
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_HUGEPAGES
1682 select WEAK_ORDERING
1684 config CPU_CAVIUM_OCTEON
1685 bool "Cavium Octeon processor"
1686 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1687 select CPU_HAS_PREFETCH
1688 select CPU_SUPPORTS_64BIT_KERNEL
1689 select WEAK_ORDERING
1690 select CPU_SUPPORTS_HIGHMEM
1691 select CPU_SUPPORTS_HUGEPAGES
1692 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1693 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1694 select MIPS_L1_CACHE_SHIFT_7
1696 The Cavium Octeon processor is a highly integrated chip containing
1697 many ethernet hardware widgets for networking tasks. The processor
1698 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1699 Full details can be found at http://www.caviumnetworks.com.
1702 bool "Broadcom BMIPS"
1703 depends on SYS_HAS_CPU_BMIPS
1705 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1706 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1707 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1708 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1709 select CPU_SUPPORTS_32BIT_KERNEL
1710 select DMA_NONCOHERENT
1712 select SWAP_IO_SPACE
1713 select WEAK_ORDERING
1714 select CPU_SUPPORTS_HIGHMEM
1715 select CPU_HAS_PREFETCH
1717 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1720 bool "Netlogic XLR SoC"
1721 depends on SYS_HAS_CPU_XLR
1722 select CPU_SUPPORTS_32BIT_KERNEL
1723 select CPU_SUPPORTS_64BIT_KERNEL
1724 select CPU_SUPPORTS_HIGHMEM
1725 select CPU_SUPPORTS_HUGEPAGES
1726 select WEAK_ORDERING
1727 select WEAK_REORDERING_BEYOND_LLSC
1729 Netlogic Microsystems XLR/XLS processors.
1732 bool "Netlogic XLP SoC"
1733 depends on SYS_HAS_CPU_XLP
1734 select CPU_SUPPORTS_32BIT_KERNEL
1735 select CPU_SUPPORTS_64BIT_KERNEL
1736 select CPU_SUPPORTS_HIGHMEM
1737 select WEAK_ORDERING
1738 select WEAK_REORDERING_BEYOND_LLSC
1739 select CPU_HAS_PREFETCH
1741 select CPU_SUPPORTS_HUGEPAGES
1742 select MIPS_ASID_BITS_VARIABLE
1744 Netlogic Microsystems XLP processors.
1747 config CPU_MIPS32_3_5_FEATURES
1748 bool "MIPS32 Release 3.5 Features"
1749 depends on SYS_HAS_CPU_MIPS32_R3_5
1750 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1752 Choose this option to build a kernel for release 2 or later of the
1753 MIPS32 architecture including features from the 3.5 release such as
1754 support for Enhanced Virtual Addressing (EVA).
1756 config CPU_MIPS32_3_5_EVA
1757 bool "Enhanced Virtual Addressing (EVA)"
1758 depends on CPU_MIPS32_3_5_FEATURES
1762 Choose this option if you want to enable the Enhanced Virtual
1763 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1764 One of its primary benefits is an increase in the maximum size
1765 of lowmem (up to 3GB). If unsure, say 'N' here.
1767 config CPU_MIPS32_R5_FEATURES
1768 bool "MIPS32 Release 5 Features"
1769 depends on SYS_HAS_CPU_MIPS32_R5
1770 depends on CPU_MIPS32_R2
1772 Choose this option to build a kernel for release 2 or later of the
1773 MIPS32 architecture including features from release 5 such as
1774 support for Extended Physical Addressing (XPA).
1776 config CPU_MIPS32_R5_XPA
1777 bool "Extended Physical Addressing (XPA)"
1778 depends on CPU_MIPS32_R5_FEATURES
1780 depends on !PAGE_SIZE_4KB
1781 depends on SYS_SUPPORTS_HIGHMEM
1784 select ARCH_PHYS_ADDR_T_64BIT
1787 Choose this option if you want to enable the Extended Physical
1788 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1789 benefit is to increase physical addressing equal to or greater
1790 than 40 bits. Note that this has the side effect of turning on
1791 64-bit addressing which in turn makes the PTEs 64-bit in size.
1792 If unsure, say 'N' here.
1795 config CPU_NOP_WORKAROUNDS
1798 config CPU_JUMP_WORKAROUNDS
1801 config CPU_LOONGSON2F_WORKAROUNDS
1802 bool "Loongson 2F Workarounds"
1804 select CPU_NOP_WORKAROUNDS
1805 select CPU_JUMP_WORKAROUNDS
1807 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1808 require workarounds. Without workarounds the system may hang
1809 unexpectedly. For more information please refer to the gas
1810 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1812 Loongson 2F03 and later have fixed these issues and no workarounds
1813 are needed. The workarounds have no significant side effect on them
1814 but may decrease the performance of the system so this option should
1815 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1818 If unsure, please say Y.
1819 endif # CPU_LOONGSON2F
1821 config SYS_SUPPORTS_ZBOOT
1823 select HAVE_KERNEL_GZIP
1824 select HAVE_KERNEL_BZIP2
1825 select HAVE_KERNEL_LZ4
1826 select HAVE_KERNEL_LZMA
1827 select HAVE_KERNEL_LZO
1828 select HAVE_KERNEL_XZ
1830 config SYS_SUPPORTS_ZBOOT_UART16550
1832 select SYS_SUPPORTS_ZBOOT
1834 config SYS_SUPPORTS_ZBOOT_UART_PROM
1836 select SYS_SUPPORTS_ZBOOT
1838 config CPU_LOONGSON2
1840 select CPU_SUPPORTS_32BIT_KERNEL
1841 select CPU_SUPPORTS_64BIT_KERNEL
1842 select CPU_SUPPORTS_HIGHMEM
1843 select CPU_SUPPORTS_HUGEPAGES
1845 config CPU_LOONGSON1
1849 select CPU_HAS_PREFETCH
1850 select CPU_SUPPORTS_32BIT_KERNEL
1851 select CPU_SUPPORTS_HIGHMEM
1852 select CPU_SUPPORTS_CPUFREQ
1854 config CPU_BMIPS32_3300
1855 select SMP_UP if SMP
1858 config CPU_BMIPS4350
1860 select SYS_SUPPORTS_SMP
1861 select SYS_SUPPORTS_HOTPLUG_CPU
1863 config CPU_BMIPS4380
1865 select MIPS_L1_CACHE_SHIFT_6
1866 select SYS_SUPPORTS_SMP
1867 select SYS_SUPPORTS_HOTPLUG_CPU
1870 config CPU_BMIPS5000
1872 select MIPS_CPU_SCACHE
1873 select MIPS_L1_CACHE_SHIFT_7
1874 select SYS_SUPPORTS_SMP
1875 select SYS_SUPPORTS_HOTPLUG_CPU
1878 config SYS_HAS_CPU_LOONGSON3
1880 select CPU_SUPPORTS_CPUFREQ
1883 config SYS_HAS_CPU_LOONGSON2E
1886 config SYS_HAS_CPU_LOONGSON2F
1888 select CPU_SUPPORTS_CPUFREQ
1889 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1890 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1892 config SYS_HAS_CPU_LOONGSON1B
1895 config SYS_HAS_CPU_LOONGSON1C
1898 config SYS_HAS_CPU_MIPS32_R1
1901 config SYS_HAS_CPU_MIPS32_R2
1904 config SYS_HAS_CPU_MIPS32_R3_5
1907 config SYS_HAS_CPU_MIPS32_R5
1910 config SYS_HAS_CPU_MIPS32_R6
1913 config SYS_HAS_CPU_MIPS64_R1
1916 config SYS_HAS_CPU_MIPS64_R2
1919 config SYS_HAS_CPU_MIPS64_R6
1922 config SYS_HAS_CPU_R3000
1925 config SYS_HAS_CPU_TX39XX
1928 config SYS_HAS_CPU_VR41XX
1931 config SYS_HAS_CPU_R4300
1934 config SYS_HAS_CPU_R4X00
1937 config SYS_HAS_CPU_TX49XX
1940 config SYS_HAS_CPU_R5000
1943 config SYS_HAS_CPU_R5432
1946 config SYS_HAS_CPU_R5500
1949 config SYS_HAS_CPU_R6000
1952 config SYS_HAS_CPU_NEVADA
1955 config SYS_HAS_CPU_R8000
1958 config SYS_HAS_CPU_R10000
1961 config SYS_HAS_CPU_RM7000
1964 config SYS_HAS_CPU_SB1
1967 config SYS_HAS_CPU_CAVIUM_OCTEON
1970 config SYS_HAS_CPU_BMIPS
1973 config SYS_HAS_CPU_BMIPS32_3300
1975 select SYS_HAS_CPU_BMIPS
1977 config SYS_HAS_CPU_BMIPS4350
1979 select SYS_HAS_CPU_BMIPS
1981 config SYS_HAS_CPU_BMIPS4380
1983 select SYS_HAS_CPU_BMIPS
1985 config SYS_HAS_CPU_BMIPS5000
1987 select SYS_HAS_CPU_BMIPS
1989 config SYS_HAS_CPU_XLR
1992 config SYS_HAS_CPU_XLP
1995 config MIPS_MALTA_PM
1996 depends on MIPS_MALTA
2002 # CPU may reorder R->R, R->W, W->R, W->W
2003 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2005 config WEAK_ORDERING
2009 # CPU may reorder reads and writes beyond LL/SC
2010 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2012 config WEAK_REORDERING_BEYOND_LLSC
2017 # These two indicate any level of the MIPS32 and MIPS64 architecture
2021 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2025 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2028 # These two indicate the revision of the architecture, either Release 1 or Release 2
2032 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2036 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2042 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2044 select HAVE_ARCH_BITREVERSE
2045 select MIPS_ASID_BITS_VARIABLE
2054 config SYS_SUPPORTS_32BIT_KERNEL
2056 config SYS_SUPPORTS_64BIT_KERNEL
2058 config CPU_SUPPORTS_32BIT_KERNEL
2060 config CPU_SUPPORTS_64BIT_KERNEL
2062 config CPU_SUPPORTS_CPUFREQ
2064 config CPU_SUPPORTS_ADDRWINCFG
2066 config CPU_SUPPORTS_HUGEPAGES
2068 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2070 config MIPS_PGD_C0_CONTEXT
2072 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2075 # Set to y for ptrace access to watch registers.
2077 config HARDWARE_WATCHPOINTS
2079 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2084 prompt "Kernel code model"
2086 You should only select this option if you have a workload that
2087 actually benefits from 64-bit processing or if your machine has
2088 large memory. You will only be presented a single option in this
2089 menu if your system does not support both 32-bit and 64-bit kernels.
2092 bool "32-bit kernel"
2093 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2096 Select this option if you want to build a 32-bit kernel.
2099 bool "64-bit kernel"
2100 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2102 Select this option if you want to build a 64-bit kernel.
2107 bool "KVM Guest Kernel"
2108 depends on BROKEN_ON_SMP
2110 Select this option if building a guest kernel for KVM (Trap & Emulate)
2113 config KVM_GUEST_TIMER_FREQ
2114 int "Count/Compare Timer Frequency (MHz)"
2115 depends on KVM_GUEST
2118 Set this to non-zero if building a guest kernel for KVM to skip RTC
2119 emulation when determining guest CPU Frequency. Instead, the guest's
2120 timer frequency is specified directly.
2122 config MIPS_VA_BITS_48
2123 bool "48 bits virtual memory"
2126 Support a maximum at least 48 bits of application virtual memory.
2127 Default is 40 bits or less, depending on the CPU.
2128 This option result in a small memory overhead for page tables.
2129 This option is only supported with 16k and 64k page sizes.
2133 prompt "Kernel page size"
2134 default PAGE_SIZE_4KB
2136 config PAGE_SIZE_4KB
2138 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2139 depends on !MIPS_VA_BITS_48
2141 This option select the standard 4kB Linux page size. On some
2142 R3000-family processors this is the only available page size. Using
2143 4kB page size will minimize memory consumption and is therefore
2144 recommended for low memory systems.
2146 config PAGE_SIZE_8KB
2148 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2149 depends on !MIPS_VA_BITS_48
2151 Using 8kB page size will result in higher performance kernel at
2152 the price of higher memory consumption. This option is available
2153 only on R8000 and cnMIPS processors. Note that you will need a
2154 suitable Linux distribution to support this.
2156 config PAGE_SIZE_16KB
2158 depends on !CPU_R3000 && !CPU_TX39XX
2160 Using 16kB page size will result in higher performance kernel at
2161 the price of higher memory consumption. This option is available on
2162 all non-R3000 family processors. Note that you will need a suitable
2163 Linux distribution to support this.
2165 config PAGE_SIZE_32KB
2167 depends on CPU_CAVIUM_OCTEON
2168 depends on !MIPS_VA_BITS_48
2170 Using 32kB page size will result in higher performance kernel at
2171 the price of higher memory consumption. This option is available
2172 only on cnMIPS cores. Note that you will need a suitable Linux
2173 distribution to support this.
2175 config PAGE_SIZE_64KB
2177 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2179 Using 64kB page size will result in higher performance kernel at
2180 the price of higher memory consumption. This option is available on
2181 all non-R3000 family processor. Not that at the time of this
2182 writing this option is still high experimental.
2186 config FORCE_MAX_ZONEORDER
2187 int "Maximum zone order"
2188 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2189 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2190 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2191 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2192 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2193 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2197 The kernel memory allocator divides physically contiguous memory
2198 blocks into "zones", where each zone is a power of two number of
2199 pages. This option selects the largest power of two that the kernel
2200 keeps in the memory allocator. If you need to allocate very large
2201 blocks of physically contiguous memory, then you may need to
2202 increase this value.
2204 This config option is actually maximum order plus one. For example,
2205 a value of 11 means that the largest free memory block is 2^10 pages.
2207 The page size is not necessarily 4KB. Keep this in mind
2208 when choosing a value for this option.
2213 config IP22_CPU_SCACHE
2218 # Support for a MIPS32 / MIPS64 style S-caches
2220 config MIPS_CPU_SCACHE
2224 config R5000_CPU_SCACHE
2228 config RM7000_CPU_SCACHE
2232 config SIBYTE_DMA_PAGEOPS
2233 bool "Use DMA to clear/copy pages"
2236 Instead of using the CPU to zero and copy pages, use a Data Mover
2237 channel. These DMA channels are otherwise unused by the standard
2238 SiByte Linux port. Seems to give a small performance benefit.
2240 config CPU_HAS_PREFETCH
2243 config CPU_GENERIC_DUMP_TLB
2245 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2249 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2251 config CPU_R4K_CACHE_TLB
2253 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2256 bool "MIPS MT SMP support (1 TC on each available VPE)"
2257 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2258 select CPU_MIPSR2_IRQ_VI
2259 select CPU_MIPSR2_IRQ_EI
2264 select SYS_SUPPORTS_SMP
2265 select SYS_SUPPORTS_SCHED_SMT
2266 select MIPS_PERF_SHARED_TC_COUNTERS
2268 This is a kernel model which is known as SMVP. This is supported
2269 on cores with the MT ASE and uses the available VPEs to implement
2270 virtual processors which supports SMP. This is equivalent to the
2271 Intel Hyperthreading feature. For further information go to
2272 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2278 bool "SMT (multithreading) scheduler support"
2279 depends on SYS_SUPPORTS_SCHED_SMT
2282 SMT scheduler support improves the CPU scheduler's decision making
2283 when dealing with MIPS MT enabled cores at a cost of slightly
2284 increased overhead in some places. If unsure say N here.
2286 config SYS_SUPPORTS_SCHED_SMT
2289 config SYS_SUPPORTS_MULTITHREADING
2292 config MIPS_MT_FPAFF
2293 bool "Dynamic FPU affinity for FP-intensive threads"
2295 depends on MIPS_MT_SMP
2297 config MIPSR2_TO_R6_EMULATOR
2298 bool "MIPS R2-to-R6 emulator"
2299 depends on CPU_MIPSR6 && !SMP
2302 Choose this option if you want to run non-R6 MIPS userland code.
2303 Even if you say 'Y' here, the emulator will still be disabled by
2304 default. You can enable it using the 'mipsr2emu' kernel option.
2305 The only reason this is a build-time option is to save ~14K from the
2307 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2308 depends on SMP && CPU_MIPSR6
2310 config MIPS_VPE_LOADER
2311 bool "VPE loader support."
2312 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2313 select CPU_MIPSR2_IRQ_VI
2314 select CPU_MIPSR2_IRQ_EI
2317 Includes a loader for loading an elf relocatable object
2318 onto another VPE and running it.
2320 config MIPS_VPE_LOADER_CMP
2323 depends on MIPS_VPE_LOADER && MIPS_CMP
2325 config MIPS_VPE_LOADER_MT
2328 depends on MIPS_VPE_LOADER && !MIPS_CMP
2330 config MIPS_VPE_LOADER_TOM
2331 bool "Load VPE program into memory hidden from linux"
2332 depends on MIPS_VPE_LOADER
2335 The loader can use memory that is present but has been hidden from
2336 Linux using the kernel command line option "mem=xxMB". It's up to
2337 you to ensure the amount you put in the option and the space your
2338 program requires is less or equal to the amount physically present.
2340 config MIPS_VPE_APSP_API
2341 bool "Enable support for AP/SP API (RTLX)"
2342 depends on MIPS_VPE_LOADER
2345 config MIPS_VPE_APSP_API_CMP
2348 depends on MIPS_VPE_APSP_API && MIPS_CMP
2350 config MIPS_VPE_APSP_API_MT
2353 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2356 bool "MIPS CMP framework support (DEPRECATED)"
2357 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2360 select SYS_SUPPORTS_SMP
2361 select WEAK_ORDERING
2364 Select this if you are using a bootloader which implements the "CMP
2365 framework" protocol (ie. YAMON) and want your kernel to make use of
2366 its ability to start secondary CPUs.
2368 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2372 bool "MIPS Coherent Processing System support"
2373 depends on SYS_SUPPORTS_MIPS_CPS
2376 select MIPS_CPS_PM if HOTPLUG_CPU
2378 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2379 select SYS_SUPPORTS_HOTPLUG_CPU
2380 select SYS_SUPPORTS_SMP
2381 select WEAK_ORDERING
2383 Select this if you wish to run an SMP kernel across multiple cores
2384 within a MIPS Coherent Processing System. When this option is
2385 enabled the kernel will probe for other cores and boot them with
2386 no external assistance. It is safe to enable this when hardware
2387 support is unavailable.
2400 config SB1_PASS_2_WORKAROUNDS
2402 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2405 config SB1_PASS_2_1_WORKAROUNDS
2407 depends on CPU_SB1 && CPU_SB1_PASS_2
2411 config ARCH_PHYS_ADDR_T_64BIT
2415 prompt "SmartMIPS or microMIPS ASE support"
2417 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2420 Select this if you want neither microMIPS nor SmartMIPS support
2422 config CPU_HAS_SMARTMIPS
2423 depends on SYS_SUPPORTS_SMARTMIPS
2426 SmartMIPS is a extension of the MIPS32 architecture aimed at
2427 increased security at both hardware and software level for
2428 smartcards. Enabling this option will allow proper use of the
2429 SmartMIPS instructions by Linux applications. However a kernel with
2430 this option will not work on a MIPS core without SmartMIPS core. If
2431 you don't know you probably don't have SmartMIPS and should say N
2434 config CPU_MICROMIPS
2435 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2438 When this option is enabled the kernel will be built using the
2444 bool "Support for the MIPS SIMD Architecture"
2445 depends on CPU_SUPPORTS_MSA
2446 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2448 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2449 and a set of SIMD instructions to operate on them. When this option
2450 is enabled the kernel will support allocating & switching MSA
2451 vector register contexts. If you know that your kernel will only be
2452 running on CPUs which do not support MSA or that your userland will
2453 not be making use of it then you may wish to say N here to reduce
2454 the size & complexity of your kernel.
2468 # Vectored interrupt mode is an R2 feature
2470 config CPU_MIPSR2_IRQ_VI
2474 # Extended interrupt mode is an R2 feature
2476 config CPU_MIPSR2_IRQ_EI
2481 depends on !CPU_R3000
2487 config CPU_DADDI_WORKAROUNDS
2490 config CPU_R4000_WORKAROUNDS
2492 select CPU_R4400_WORKAROUNDS
2494 config CPU_R4400_WORKAROUNDS
2497 config MIPS_ASID_SHIFT
2499 default 6 if CPU_R3000 || CPU_TX39XX
2500 default 4 if CPU_R8000
2503 config MIPS_ASID_BITS
2505 default 0 if MIPS_ASID_BITS_VARIABLE
2506 default 6 if CPU_R3000 || CPU_TX39XX
2509 config MIPS_ASID_BITS_VARIABLE
2513 # - Highmem only makes sense for the 32-bit kernel.
2514 # - The current highmem code will only work properly on physically indexed
2515 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2516 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2517 # moment we protect the user and offer the highmem option only on machines
2518 # where it's known to be safe. This will not offer highmem on a few systems
2519 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2520 # indexed CPUs but we're playing safe.
2521 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2522 # know they might have memory configurations that could make use of highmem
2526 bool "High Memory Support"
2527 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2529 config CPU_SUPPORTS_HIGHMEM
2532 config SYS_SUPPORTS_HIGHMEM
2535 config SYS_SUPPORTS_SMARTMIPS
2538 config SYS_SUPPORTS_MICROMIPS
2541 config SYS_SUPPORTS_MIPS16
2544 This option must be set if a kernel might be executed on a MIPS16-
2545 enabled CPU even if MIPS16 is not actually being used. In other
2546 words, it makes the kernel MIPS16-tolerant.
2548 config CPU_SUPPORTS_MSA
2551 config ARCH_FLATMEM_ENABLE
2553 depends on !NUMA && !CPU_LOONGSON2
2555 config ARCH_DISCONTIGMEM_ENABLE
2557 default y if SGI_IP27
2559 Say Y to support efficient handling of discontiguous physical memory,
2560 for architectures which are either NUMA (Non-Uniform Memory Access)
2561 or have huge holes in the physical address space for other reasons.
2562 See <file:Documentation/vm/numa> for more.
2564 config ARCH_SPARSEMEM_ENABLE
2566 select SPARSEMEM_STATIC
2570 depends on SYS_SUPPORTS_NUMA
2572 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2573 Access). This option improves performance on systems with more
2574 than two nodes; on two node systems it is generally better to
2575 leave it disabled; on single node systems disable this option
2578 config SYS_SUPPORTS_NUMA
2582 bool "Relocatable kernel"
2583 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2585 This builds a kernel image that retains relocation information
2586 so it can be loaded someplace besides the default 1MB.
2587 The relocations make the kernel binary about 15% larger,
2588 but are discarded at runtime
2590 config RELOCATION_TABLE_SIZE
2591 hex "Relocation table size"
2592 depends on RELOCATABLE
2593 range 0x0 0x01000000
2594 default "0x00100000"
2596 A table of relocation data will be appended to the kernel binary
2597 and parsed at boot to fix up the relocated kernel.
2599 This option allows the amount of space reserved for the table to be
2600 adjusted, although the default of 1Mb should be ok in most cases.
2602 The build will fail and a valid size suggested if this is too small.
2604 If unsure, leave at the default value.
2606 config RANDOMIZE_BASE
2607 bool "Randomize the address of the kernel image"
2608 depends on RELOCATABLE
2610 Randomizes the physical and virtual address at which the
2611 kernel image is loaded, as a security feature that
2612 deters exploit attempts relying on knowledge of the location
2613 of kernel internals.
2615 Entropy is generated using any coprocessor 0 registers available.
2617 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2621 config RANDOMIZE_BASE_MAX_OFFSET
2622 hex "Maximum kASLR offset" if EXPERT
2623 depends on RANDOMIZE_BASE
2624 range 0x0 0x40000000 if EVA || 64BIT
2625 range 0x0 0x08000000
2626 default "0x01000000"
2628 When kASLR is active, this provides the maximum offset that will
2629 be applied to the kernel image. It should be set according to the
2630 amount of physical RAM available in the target system minus
2631 PHYSICAL_START and must be a power of 2.
2633 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2634 EVA or 64-bit. The default is 16Mb.
2639 depends on NEED_MULTIPLE_NODES
2641 config HW_PERF_EVENTS
2642 bool "Enable hardware performance counter support for perf events"
2643 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2646 Enable hardware performance counter support for perf events. If
2647 disabled, perf events will use software events only.
2652 bool "Multi-Processing support"
2653 depends on SYS_SUPPORTS_SMP
2655 This enables support for systems with more than one CPU. If you have
2656 a system with only one CPU, say N. If you have a system with more
2657 than one CPU, say Y.
2659 If you say N here, the kernel will run on uni- and multiprocessor
2660 machines, but will use only one CPU of a multiprocessor machine. If
2661 you say Y here, the kernel will run on many, but not all,
2662 uniprocessor machines. On a uniprocessor machine, the kernel
2663 will run faster if you say N here.
2665 People using multiprocessor machines who say Y here should also say
2666 Y to "Enhanced Real Time Clock Support", below.
2668 See also the SMP-HOWTO available at
2669 <http://www.tldp.org/docs.html#howto>.
2671 If you don't know what to do here, say N.
2674 bool "Support for hot-pluggable CPUs"
2675 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2677 Say Y here to allow turning CPUs off and on. CPUs can be
2678 controlled through /sys/devices/system/cpu.
2679 (Note: power management support will enable this option
2680 automatically on SMP systems. )
2681 Say N if you want to disable CPU hotplug.
2686 config SYS_SUPPORTS_MIPS_CMP
2689 config SYS_SUPPORTS_MIPS_CPS
2692 config SYS_SUPPORTS_SMP
2695 config NR_CPUS_DEFAULT_4
2698 config NR_CPUS_DEFAULT_8
2701 config NR_CPUS_DEFAULT_16
2704 config NR_CPUS_DEFAULT_32
2707 config NR_CPUS_DEFAULT_64
2711 int "Maximum number of CPUs (2-256)"
2714 default "4" if NR_CPUS_DEFAULT_4
2715 default "8" if NR_CPUS_DEFAULT_8
2716 default "16" if NR_CPUS_DEFAULT_16
2717 default "32" if NR_CPUS_DEFAULT_32
2718 default "64" if NR_CPUS_DEFAULT_64
2720 This allows you to specify the maximum number of CPUs which this
2721 kernel will support. The maximum supported value is 32 for 32-bit
2722 kernel and 64 for 64-bit kernels; the minimum value which makes
2723 sense is 1 for Qemu (useful only for kernel debugging purposes)
2724 and 2 for all others.
2726 This is purely to save memory - each supported CPU adds
2727 approximately eight kilobytes to the kernel image. For best
2728 performance should round up your number of processors to the next
2731 config MIPS_PERF_SHARED_TC_COUNTERS
2735 # Timer Interrupt Frequency Configuration
2739 prompt "Timer frequency"
2742 Allows the configuration of the timer frequency.
2745 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2748 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2751 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2754 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2757 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2760 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2763 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2766 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2770 config SYS_SUPPORTS_24HZ
2773 config SYS_SUPPORTS_48HZ
2776 config SYS_SUPPORTS_100HZ
2779 config SYS_SUPPORTS_128HZ
2782 config SYS_SUPPORTS_250HZ
2785 config SYS_SUPPORTS_256HZ
2788 config SYS_SUPPORTS_1000HZ
2791 config SYS_SUPPORTS_1024HZ
2794 config SYS_SUPPORTS_ARBIT_HZ
2796 default y if !SYS_SUPPORTS_24HZ && \
2797 !SYS_SUPPORTS_48HZ && \
2798 !SYS_SUPPORTS_100HZ && \
2799 !SYS_SUPPORTS_128HZ && \
2800 !SYS_SUPPORTS_250HZ && \
2801 !SYS_SUPPORTS_256HZ && \
2802 !SYS_SUPPORTS_1000HZ && \
2803 !SYS_SUPPORTS_1024HZ
2809 default 100 if HZ_100
2810 default 128 if HZ_128
2811 default 250 if HZ_250
2812 default 256 if HZ_256
2813 default 1000 if HZ_1000
2814 default 1024 if HZ_1024
2817 def_bool HIGH_RES_TIMERS
2819 source "kernel/Kconfig.preempt"
2822 bool "Kexec system call"
2825 kexec is a system call that implements the ability to shutdown your
2826 current kernel, and to start another kernel. It is like a reboot
2827 but it is independent of the system firmware. And like a reboot
2828 you can start any kernel with it, not just Linux.
2830 The name comes from the similarity to the exec system call.
2832 It is an ongoing process to be certain the hardware in a machine
2833 is properly shutdown, so do not be surprised if this code does not
2834 initially work for you. As of this writing the exact hardware
2835 interface is strongly in flux, so no good recommendation can be
2839 bool "Kernel crash dumps"
2841 Generate crash dump after being started by kexec.
2842 This should be normally only set in special crash dump kernels
2843 which are loaded in the main kernel with kexec-tools into
2844 a specially reserved region and then later executed after
2845 a crash by kdump/kexec. The crash dump kernel must be compiled
2846 to a memory address not used by the main kernel or firmware using
2849 config PHYSICAL_START
2850 hex "Physical address where the kernel is loaded"
2851 default "0xffffffff84000000" if 64BIT
2852 default "0x84000000" if 32BIT
2853 depends on CRASH_DUMP
2855 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2856 If you plan to use kernel for capturing the crash dump change
2857 this value to start of the reserved region (the "X" value as
2858 specified in the "crashkernel=YM@XM" command line boot parameter
2859 passed to the panic-ed kernel).
2862 bool "Enable seccomp to safely compute untrusted bytecode"
2866 This kernel feature is useful for number crunching applications
2867 that may need to compute untrusted bytecode during their
2868 execution. By using pipes or other transports made available to
2869 the process as file descriptors supporting the read/write
2870 syscalls, it's possible to isolate those applications in
2871 their own address space using seccomp. Once seccomp is
2872 enabled via /proc/<pid>/seccomp, it cannot be disabled
2873 and the task is only allowed to execute a few safe syscalls
2874 defined by each seccomp mode.
2876 If unsure, say Y. Only embedded should say N here.
2878 config MIPS_O32_FP64_SUPPORT
2879 bool "Support for O32 binaries using 64-bit FP"
2880 depends on 32BIT || MIPS32_O32
2882 When this is enabled, the kernel will support use of 64-bit floating
2883 point registers with binaries using the O32 ABI along with the
2884 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2885 32-bit MIPS systems this support is at the cost of increasing the
2886 size and complexity of the compiled FPU emulator. Thus if you are
2887 running a MIPS32 system and know that none of your userland binaries
2888 will require 64-bit floating point, you may wish to reduce the size
2889 of your kernel & potentially improve FP emulation performance by
2892 Although binutils currently supports use of this flag the details
2893 concerning its effect upon the O32 ABI in userland are still being
2894 worked on. In order to avoid userland becoming dependant upon current
2895 behaviour before the details have been finalised, this option should
2896 be considered experimental and only enabled by those working upon
2904 select OF_EARLY_FLATTREE
2911 prompt "Kernel appended dtb support" if USE_OF
2912 default MIPS_NO_APPENDED_DTB
2914 config MIPS_NO_APPENDED_DTB
2917 Do not enable appended dtb support.
2919 config MIPS_ELF_APPENDED_DTB
2922 With this option, the boot code will look for a device tree binary
2923 DTB) included in the vmlinux ELF section .appended_dtb. By default
2924 it is empty and the DTB can be appended using binutils command
2927 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2929 This is meant as a backward compatiblity convenience for those
2930 systems with a bootloader that can't be upgraded to accommodate
2931 the documented boot protocol using a device tree.
2933 config MIPS_RAW_APPENDED_DTB
2934 bool "vmlinux.bin or vmlinuz.bin"
2936 With this option, the boot code will look for a device tree binary
2937 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2938 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2940 This is meant as a backward compatibility convenience for those
2941 systems with a bootloader that can't be upgraded to accommodate
2942 the documented boot protocol using a device tree.
2944 Beware that there is very little in terms of protection against
2945 this option being confused by leftover garbage in memory that might
2946 look like a DTB header after a reboot if no actual DTB is appended
2947 to vmlinux.bin. Do not leave this option active in a production kernel
2948 if you don't intend to always append a DTB.
2952 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2953 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2956 default MIPS_CMDLINE_FROM_BOOTLOADER
2958 config MIPS_CMDLINE_FROM_DTB
2960 bool "Dtb kernel arguments if available"
2962 config MIPS_CMDLINE_DTB_EXTEND
2964 bool "Extend dtb kernel arguments with bootloader arguments"
2966 config MIPS_CMDLINE_FROM_BOOTLOADER
2967 bool "Bootloader kernel arguments if available"
2969 config MIPS_CMDLINE_BUILTIN_EXTEND
2970 depends on CMDLINE_BOOL
2971 bool "Extend builtin kernel arguments with bootloader arguments"
2976 config LOCKDEP_SUPPORT
2980 config STACKTRACE_SUPPORT
2984 config HAVE_LATENCYTOP_SUPPORT
2988 config PGTABLE_LEVELS
2990 default 3 if 64BIT && !PAGE_SIZE_64KB
2993 source "init/Kconfig"
2995 source "kernel/Kconfig.freezer"
2997 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3005 bool "Support for PCI controller"
3006 depends on HW_HAS_PCI
3009 Find out whether you have a PCI motherboard. PCI is the name of a
3010 bus system, i.e. the way the CPU talks to the other stuff inside
3011 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3015 bool "Support for HT-linked PCI"
3017 depends on CPU_LOONGSON3
3021 Loongson family machines use Hyper-Transport bus for inter-core
3022 connection and device connection. The PCI bus is a subordinate
3023 linked at HT. Choose Y for Loongson-3 based machines.
3028 config PCI_DOMAINS_GENERIC
3031 config PCI_DRIVERS_GENERIC
3032 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3035 config PCI_DRIVERS_LEGACY
3036 def_bool !PCI_DRIVERS_GENERIC
3037 select NO_GENERIC_PCI_IOPORT_MAP
3039 source "drivers/pci/Kconfig"
3042 # ISA support is now enabled via select. Too many systems still have the one
3043 # or other ISA chip on the board that users don't know about so don't expect
3044 # users to choose the right thing ...
3051 depends on HW_HAS_EISA
3053 select GENERIC_ISA_DMA
3055 The Extended Industry Standard Architecture (EISA) bus was
3056 developed as an open alternative to the IBM MicroChannel bus.
3058 The EISA bus provided some of the features of the IBM MicroChannel
3059 bus while maintaining backward compatibility with cards made for
3060 the older ISA bus. The EISA bus saw limited use between 1988 and
3061 1995 when it was made obsolete by the PCI bus.
3063 Say Y here if you are building a kernel for an EISA-based machine.
3067 source "drivers/eisa/Kconfig"
3070 bool "TURBOchannel support"
3071 depends on MACH_DECSTATION
3073 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3074 processors. TURBOchannel programming specifications are available
3076 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3078 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3079 Linux driver support status is documented at:
3080 <http://www.linux-mips.org/wiki/DECstation>
3090 select MIPS_EXTERNAL_TIMER
3098 source "drivers/pcmcia/Kconfig"
3101 tristate "RapidIO support"
3105 If you say Y here, the kernel will include drivers and
3106 infrastructure code to support RapidIO interconnect devices.
3108 source "drivers/rapidio/Kconfig"
3112 menu "Executable file formats"
3114 source "fs/Kconfig.binfmt"
3119 config MIPS32_COMPAT
3125 config SYSVIPC_COMPAT
3129 bool "Kernel support for o32 binaries"
3131 select ARCH_WANT_OLD_COMPAT_IPC
3133 select MIPS32_COMPAT
3134 select SYSVIPC_COMPAT if SYSVIPC
3136 Select this option if you want to run o32 binaries. These are pure
3137 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3138 existing binaries are in this format.
3143 bool "Kernel support for n32 binaries"
3145 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3147 select MIPS32_COMPAT
3148 select SYSVIPC_COMPAT if SYSVIPC
3150 Select this option if you want to run n32 binaries. These are
3151 64-bit binaries using 32-bit quantities for addressing and certain
3152 data that would normally be 64-bit. They are used in special
3159 default y if MIPS32_O32 || MIPS32_N32
3164 menu "Power management options"
3166 config ARCH_HIBERNATION_POSSIBLE
3168 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3170 config ARCH_SUSPEND_POSSIBLE
3172 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3174 source "kernel/power/Kconfig"
3178 config MIPS_EXTERNAL_TIMER
3181 menu "CPU Power Management"
3183 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3184 source "drivers/cpufreq/Kconfig"
3187 source "drivers/cpuidle/Kconfig"
3191 source "net/Kconfig"
3193 source "drivers/Kconfig"
3195 source "drivers/firmware/Kconfig"
3199 source "arch/mips/Kconfig.debug"
3201 source "security/Kconfig"
3203 source "crypto/Kconfig"
3205 source "lib/Kconfig"
3207 source "arch/mips/kvm/Kconfig"