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
71 select HAVE_ARCH_HARDENED_USERCOPY
72 select ARCH_HAS_RAW_COPY_USER
74 menu "Machine selection"
81 bool "Generic board-agnostic MIPS kernel"
85 select CLKSRC_MIPS_GIC
87 select CPU_MIPSR2_IRQ_VI
88 select CPU_MIPSR2_IRQ_EI
90 select DMA_PERDEV_COHERENT
94 select MIPS_CPU_SCACHE
96 select MIPS_L1_CACHE_SHIFT_7
98 select PCI_DRIVERS_GENERIC
102 select SYS_HAS_CPU_MIPS32_R1
103 select SYS_HAS_CPU_MIPS32_R2
104 select SYS_HAS_CPU_MIPS32_R6
105 select SYS_HAS_CPU_MIPS64_R1
106 select SYS_HAS_CPU_MIPS64_R2
107 select SYS_HAS_CPU_MIPS64_R6
108 select SYS_SUPPORTS_32BIT_KERNEL
109 select SYS_SUPPORTS_64BIT_KERNEL
110 select SYS_SUPPORTS_BIG_ENDIAN
111 select SYS_SUPPORTS_HIGHMEM
112 select SYS_SUPPORTS_LITTLE_ENDIAN
113 select SYS_SUPPORTS_MICROMIPS
114 select SYS_SUPPORTS_MIPS_CPS
115 select SYS_SUPPORTS_MIPS16
116 select SYS_SUPPORTS_MULTITHREADING
117 select SYS_SUPPORTS_RELOCATABLE
118 select SYS_SUPPORTS_SMARTMIPS
119 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
120 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
121 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
122 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
123 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
124 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
127 Select this to build a kernel which aims to support multiple boards,
128 generally using a flattened device tree passed from the bootloader
129 using the boot protocol defined in the UHI (Unified Hosting
130 Interface) specification.
133 bool "Alchemy processor based machines"
134 select ARCH_PHYS_ADDR_T_64BIT
138 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
139 select SYS_HAS_CPU_MIPS32_R1
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_APM_EMULATION
143 select SYS_SUPPORTS_ZBOOT
147 bool "Texas Instruments AR7"
149 select DMA_NONCOHERENT
153 select NO_EXCEPT_FILL
155 select SYS_HAS_CPU_MIPS32_R1
156 select SYS_HAS_EARLY_PRINTK
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_LITTLE_ENDIAN
159 select SYS_SUPPORTS_MIPS16
160 select SYS_SUPPORTS_ZBOOT_UART16550
165 Support for the Texas Instruments AR7 System-on-a-Chip
166 family: TNETD7100, 7200 and 7300.
169 bool "Atheros AR231x/AR531x SoC support"
172 select DMA_NONCOHERENT
175 select SYS_HAS_CPU_MIPS32_R1
176 select SYS_SUPPORTS_BIG_ENDIAN
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_HAS_EARLY_PRINTK
180 Support for Atheros AR231x and Atheros AR531x based boards
183 bool "Atheros AR71XX/AR724X/AR913X based boards"
184 select ARCH_HAS_RESET_CONTROLLER
188 select DMA_NONCOHERENT
195 select SYS_HAS_CPU_MIPS32_R2
196 select SYS_HAS_EARLY_PRINTK
197 select SYS_SUPPORTS_32BIT_KERNEL
198 select SYS_SUPPORTS_BIG_ENDIAN
199 select SYS_SUPPORTS_MIPS16
200 select SYS_SUPPORTS_ZBOOT_UART_PROM
203 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
206 bool "Broadcom Generic BMIPS kernel"
208 select NO_EXCEPT_FILL
214 select BCM6345_L1_IRQ
215 select BCM7038_L1_IRQ
216 select BCM7120_L2_IRQ
217 select BRCMSTB_L2_IRQ
219 select DMA_NONCOHERENT
220 select SYS_SUPPORTS_32BIT_KERNEL
221 select SYS_SUPPORTS_LITTLE_ENDIAN
222 select SYS_SUPPORTS_BIG_ENDIAN
223 select SYS_SUPPORTS_HIGHMEM
224 select SYS_HAS_CPU_BMIPS32_3300
225 select SYS_HAS_CPU_BMIPS4350
226 select SYS_HAS_CPU_BMIPS4380
227 select SYS_HAS_CPU_BMIPS5000
229 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
230 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
231 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
232 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
234 Build a generic DT-based kernel image that boots on select
235 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
236 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
237 must be set appropriately for your board.
240 bool "Broadcom BCM47XX based boards"
244 select DMA_NONCOHERENT
247 select SYS_HAS_CPU_MIPS32_R1
248 select NO_EXCEPT_FILL
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_LITTLE_ENDIAN
251 select SYS_SUPPORTS_MIPS16
252 select SYS_HAS_EARLY_PRINTK
253 select USE_GENERIC_EARLY_PRINTK_8250
255 select LEDS_GPIO_REGISTER
259 Support for BCM47XX based boards
262 bool "Broadcom BCM63XX based boards"
267 select DMA_NONCOHERENT
269 select SYS_SUPPORTS_32BIT_KERNEL
270 select SYS_SUPPORTS_BIG_ENDIAN
271 select SYS_HAS_EARLY_PRINTK
275 select MIPS_L1_CACHE_SHIFT_4
277 Support for BCM63XX based boards
284 select DMA_NONCOHERENT
290 select PCI_GT64XXX_PCI0
292 select SYS_HAS_CPU_NEVADA
293 select SYS_HAS_EARLY_PRINTK
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_LITTLE_ENDIAN
297 select USE_GENERIC_EARLY_PRINTK_8250
299 config MACH_DECSTATION
303 select CEVT_R4K if CPU_R4X00
305 select CSRC_R4K if CPU_R4X00
306 select CPU_DADDI_WORKAROUNDS if 64BIT
307 select CPU_R4000_WORKAROUNDS if 64BIT
308 select CPU_R4400_WORKAROUNDS if 64BIT
309 select DMA_NONCOHERENT
312 select SYS_HAS_CPU_R3000
313 select SYS_HAS_CPU_R4X00
314 select SYS_SUPPORTS_32BIT_KERNEL
315 select SYS_SUPPORTS_64BIT_KERNEL
316 select SYS_SUPPORTS_LITTLE_ENDIAN
317 select SYS_SUPPORTS_128HZ
318 select SYS_SUPPORTS_256HZ
319 select SYS_SUPPORTS_1024HZ
320 select MIPS_L1_CACHE_SHIFT_4
322 This enables support for DEC's MIPS based workstations. For details
323 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
324 DECstation porting pages on <http://decstation.unix-ag.org/>.
326 If you have one of the following DECstation Models you definitely
327 want to choose R4xx0 for the CPU Type:
334 otherwise choose R3000.
337 bool "Jazz family of machines"
340 select ARCH_MAY_HAVE_PC_FDC
343 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
344 select GENERIC_ISA_DMA
345 select HAVE_PCSPKR_PLATFORM
350 select SYS_HAS_CPU_R4X00
351 select SYS_SUPPORTS_32BIT_KERNEL
352 select SYS_SUPPORTS_64BIT_KERNEL
353 select SYS_SUPPORTS_100HZ
355 This a family of machines based on the MIPS R4030 chipset which was
356 used by several vendors to build RISC/os and Windows NT workstations.
357 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
358 Olivetti M700-10 workstations.
361 bool "Ingenic SoC based machines"
362 select SYS_SUPPORTS_32BIT_KERNEL
363 select SYS_SUPPORTS_LITTLE_ENDIAN
364 select SYS_SUPPORTS_ZBOOT_UART16550
365 select DMA_NONCOHERENT
369 select GENERIC_IRQ_CHIP
375 bool "Lantiq based platforms"
376 select DMA_NONCOHERENT
380 select SYS_HAS_CPU_MIPS32_R1
381 select SYS_HAS_CPU_MIPS32_R2
382 select SYS_SUPPORTS_BIG_ENDIAN
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_MIPS16
385 select SYS_SUPPORTS_MULTITHREADING
386 select SYS_HAS_EARLY_PRINTK
393 select PINCTRL_LANTIQ
394 select ARCH_HAS_RESET_CONTROLLER
395 select RESET_CONTROLLER
398 bool "LASAT Networks platforms"
402 select DMA_NONCOHERENT
403 select SYS_HAS_EARLY_PRINTK
406 select PCI_GT64XXX_PCI0
408 select R5000_CPU_SCACHE
409 select SYS_HAS_CPU_R5000
410 select SYS_SUPPORTS_32BIT_KERNEL
411 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
412 select SYS_SUPPORTS_LITTLE_ENDIAN
414 config MACH_LOONGSON32
415 bool "Loongson-1 family of machines"
416 select SYS_SUPPORTS_ZBOOT
418 This enables support for the Loongson-1 family of machines.
420 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
421 the Institute of Computing Technology (ICT), Chinese Academy of
424 config MACH_LOONGSON64
425 bool "Loongson-2/3 family of machines"
426 select SYS_SUPPORTS_ZBOOT
428 This enables the support of Loongson-2/3 family of machines.
430 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
431 family of multi-core CPUs. They are both 64-bit general-purpose
432 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
433 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
434 in the People's Republic of China. The chief architect is Professor
437 config MACH_PISTACHIO
438 bool "IMG Pistachio SoC based boards"
442 select CLKSRC_MIPS_GIC
445 select DMA_NONCOHERENT
450 select MIPS_CPU_SCACHE
454 select SYS_HAS_CPU_MIPS32_R2
455 select SYS_SUPPORTS_32BIT_KERNEL
456 select SYS_SUPPORTS_LITTLE_ENDIAN
457 select SYS_SUPPORTS_MIPS_CPS
458 select SYS_SUPPORTS_MULTITHREADING
459 select SYS_SUPPORTS_RELOCATABLE
460 select SYS_SUPPORTS_ZBOOT
461 select SYS_HAS_EARLY_PRINTK
462 select USE_GENERIC_EARLY_PRINTK_8250
465 This enables support for the IMG Pistachio SoC platform.
468 bool "MIPSfpga Xilinx based boards"
478 select MIPS_CPU_SCACHE
479 select SYS_HAS_EARLY_PRINTK
480 select SYS_HAS_CPU_MIPS32_R2
481 select SYS_SUPPORTS_32BIT_KERNEL
482 select SYS_SUPPORTS_LITTLE_ENDIAN
483 select SYS_SUPPORTS_ZBOOT_UART16550
485 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
811 config SIBYTE_SENTOSA
812 bool "Sibyte BCM91250E-Sentosa"
817 select SYS_HAS_CPU_SB1
818 select SYS_SUPPORTS_BIG_ENDIAN
819 select SYS_SUPPORTS_LITTLE_ENDIAN
822 bool "Sibyte BCM91480B-BigSur"
825 select NR_CPUS_DEFAULT_4
826 select SIBYTE_BCM1x80
828 select SYS_HAS_CPU_SB1
829 select SYS_SUPPORTS_BIG_ENDIAN
830 select SYS_SUPPORTS_HIGHMEM
831 select SYS_SUPPORTS_LITTLE_ENDIAN
832 select ZONE_DMA32 if 64BIT
835 bool "SNI RM200/300/400"
836 select FW_ARC if CPU_LITTLE_ENDIAN
837 select FW_ARC32 if CPU_LITTLE_ENDIAN
838 select FW_SNIPROM if CPU_BIG_ENDIAN
839 select ARCH_MAY_HAVE_PC_FDC
843 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
844 select DMA_NONCOHERENT
845 select GENERIC_ISA_DMA
846 select HAVE_PCSPKR_PLATFORM
853 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
854 select SYS_HAS_CPU_R4X00
855 select SYS_HAS_CPU_R5000
856 select SYS_HAS_CPU_R10000
857 select R5000_CPU_SCACHE
858 select SYS_HAS_EARLY_PRINTK
859 select SYS_SUPPORTS_32BIT_KERNEL
860 select SYS_SUPPORTS_64BIT_KERNEL
861 select SYS_SUPPORTS_BIG_ENDIAN
862 select SYS_SUPPORTS_HIGHMEM
863 select SYS_SUPPORTS_LITTLE_ENDIAN
865 The SNI RM200/300/400 are MIPS-based machines manufactured by
866 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
867 Technology and now in turn merged with Fujitsu. Say Y here to
868 support this machine type.
871 bool "Toshiba TX39 series based machines"
874 bool "Toshiba TX49 series based machines"
876 config MIKROTIK_RB532
877 bool "Mikrotik RB532 boards"
880 select DMA_NONCOHERENT
883 select SYS_HAS_CPU_MIPS32_R1
884 select SYS_SUPPORTS_32BIT_KERNEL
885 select SYS_SUPPORTS_LITTLE_ENDIAN
889 select MIPS_L1_CACHE_SHIFT_4
891 Support the Mikrotik(tm) RouterBoard 532 series,
892 based on the IDT RC32434 SoC.
894 config CAVIUM_OCTEON_SOC
895 bool "Cavium Networks Octeon SoC based boards"
897 select ARCH_PHYS_ADDR_T_64BIT
899 select SYS_SUPPORTS_64BIT_KERNEL
900 select SYS_SUPPORTS_BIG_ENDIAN
902 select EDAC_ATOMIC_SCRUB
903 select SYS_SUPPORTS_LITTLE_ENDIAN
904 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
905 select SYS_HAS_EARLY_PRINTK
906 select SYS_HAS_CPU_CAVIUM_OCTEON
913 select ARCH_SPARSEMEM_ENABLE
914 select SYS_SUPPORTS_SMP
915 select NR_CPUS_DEFAULT_16
917 select MTD_COMPLEX_MAPPINGS
918 select SYS_SUPPORTS_RELOCATABLE
920 This option supports all of the Octeon reference boards from Cavium
921 Networks. It builds a kernel that dynamically determines the Octeon
922 CPU type and supports all known board reference implementations.
923 Some of the supported boards are:
930 Say Y here for most Octeon reference boards.
933 bool "Netlogic XLR/XLS based systems"
936 select SYS_HAS_CPU_XLR
937 select SYS_SUPPORTS_SMP
940 select SYS_SUPPORTS_32BIT_KERNEL
941 select SYS_SUPPORTS_64BIT_KERNEL
942 select ARCH_PHYS_ADDR_T_64BIT
943 select SYS_SUPPORTS_BIG_ENDIAN
944 select SYS_SUPPORTS_HIGHMEM
946 select NR_CPUS_DEFAULT_32
950 select ZONE_DMA32 if 64BIT
952 select SYS_HAS_EARLY_PRINTK
953 select SYS_SUPPORTS_ZBOOT
954 select SYS_SUPPORTS_ZBOOT_UART16550
956 Support for systems based on Netlogic XLR and XLS processors.
957 Say Y here if you have a XLR or XLS based board.
960 bool "Netlogic XLP based systems"
963 select SYS_HAS_CPU_XLP
964 select SYS_SUPPORTS_SMP
966 select SYS_SUPPORTS_32BIT_KERNEL
967 select SYS_SUPPORTS_64BIT_KERNEL
968 select ARCH_PHYS_ADDR_T_64BIT
970 select SYS_SUPPORTS_BIG_ENDIAN
971 select SYS_SUPPORTS_LITTLE_ENDIAN
972 select SYS_SUPPORTS_HIGHMEM
974 select NR_CPUS_DEFAULT_32
978 select ZONE_DMA32 if 64BIT
980 select SYS_HAS_EARLY_PRINTK
982 select SYS_SUPPORTS_ZBOOT
983 select SYS_SUPPORTS_ZBOOT_UART16550
985 This board is based on Netlogic XLP Processor.
986 Say Y here if you have a XLP based board.
989 bool "Para-Virtualized guest system"
993 select SYS_SUPPORTS_64BIT_KERNEL
994 select SYS_SUPPORTS_32BIT_KERNEL
995 select SYS_SUPPORTS_BIG_ENDIAN
996 select SYS_SUPPORTS_SMP
997 select NR_CPUS_DEFAULT_4
998 select SYS_HAS_EARLY_PRINTK
999 select SYS_HAS_CPU_MIPS32_R2
1000 select SYS_HAS_CPU_MIPS64_R2
1001 select SYS_HAS_CPU_CAVIUM_OCTEON
1003 select SWAP_IO_SPACE
1005 This option supports guest running under ????
1009 source "arch/mips/alchemy/Kconfig"
1010 source "arch/mips/ath25/Kconfig"
1011 source "arch/mips/ath79/Kconfig"
1012 source "arch/mips/bcm47xx/Kconfig"
1013 source "arch/mips/bcm63xx/Kconfig"
1014 source "arch/mips/bmips/Kconfig"
1015 source "arch/mips/generic/Kconfig"
1016 source "arch/mips/jazz/Kconfig"
1017 source "arch/mips/jz4740/Kconfig"
1018 source "arch/mips/lantiq/Kconfig"
1019 source "arch/mips/lasat/Kconfig"
1020 source "arch/mips/pic32/Kconfig"
1021 source "arch/mips/pistachio/Kconfig"
1022 source "arch/mips/pmcs-msp71xx/Kconfig"
1023 source "arch/mips/ralink/Kconfig"
1024 source "arch/mips/sgi-ip27/Kconfig"
1025 source "arch/mips/sibyte/Kconfig"
1026 source "arch/mips/txx9/Kconfig"
1027 source "arch/mips/vr41xx/Kconfig"
1028 source "arch/mips/cavium-octeon/Kconfig"
1029 source "arch/mips/loongson32/Kconfig"
1030 source "arch/mips/loongson64/Kconfig"
1031 source "arch/mips/netlogic/Kconfig"
1032 source "arch/mips/paravirt/Kconfig"
1033 source "arch/mips/xilfpga/Kconfig"
1037 config RWSEM_GENERIC_SPINLOCK
1041 config RWSEM_XCHGADD_ALGORITHM
1044 config ARCH_HAS_ILOG2_U32
1048 config ARCH_HAS_ILOG2_U64
1052 config GENERIC_HWEIGHT
1056 config GENERIC_CALIBRATE_DELAY
1060 config SCHED_OMIT_FRAME_POINTER
1065 # Select some configuration options automatically based on user selections.
1070 config ARCH_MAY_HAVE_PC_FDC
1106 config MIPS_CLOCK_VSYSCALL
1107 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1116 config ARCH_DMA_ADDR_T_64BIT
1117 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1119 config ARCH_SUPPORTS_UPROBES
1122 config DMA_MAYBE_COHERENT
1123 select DMA_NONCOHERENT
1126 config DMA_PERDEV_COHERENT
1128 select DMA_MAYBE_COHERENT
1133 config DMA_NONCOHERENT
1135 select NEED_DMA_MAP_STATE
1137 config NEED_DMA_MAP_STATE
1140 config SYS_HAS_EARLY_PRINTK
1143 config SYS_SUPPORTS_HOTPLUG_CPU
1146 config MIPS_BONITO64
1161 config NO_IOPORT_MAP
1167 config GENERIC_ISA_DMA
1169 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1172 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1174 select GENERIC_ISA_DMA
1179 config HOLES_IN_ZONE
1182 config SYS_SUPPORTS_RELOCATABLE
1185 Selected if the platform supports relocating the kernel.
1186 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1187 to allow access to command line and entropy sources.
1190 # Endianness selection. Sufficiently obscure so many users don't know what to
1191 # answer,so we try hard to limit the available choices. Also the use of a
1192 # choice statement should be more obvious to the user.
1195 prompt "Endianness selection"
1197 Some MIPS machines can be configured for either little or big endian
1198 byte order. These modes require different kernels and a different
1199 Linux distribution. In general there is one preferred byteorder for a
1200 particular system but some systems are just as commonly used in the
1201 one or the other endianness.
1203 config CPU_BIG_ENDIAN
1205 depends on SYS_SUPPORTS_BIG_ENDIAN
1207 config CPU_LITTLE_ENDIAN
1208 bool "Little endian"
1209 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1216 config SYS_SUPPORTS_APM_EMULATION
1219 config SYS_SUPPORTS_BIG_ENDIAN
1222 config SYS_SUPPORTS_LITTLE_ENDIAN
1225 config SYS_SUPPORTS_HUGETLBFS
1227 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1230 config MIPS_HUGE_TLB_SUPPORT
1231 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1248 config PCI_GT64XXX_PCI0
1251 config NO_EXCEPT_FILL
1258 select DMA_NONCOHERENT
1260 select SWAP_IO_SPACE
1261 select SYS_HAS_CPU_R5500
1262 select SYS_SUPPORTS_32BIT_KERNEL
1263 select SYS_SUPPORTS_64BIT_KERNEL
1264 select SYS_SUPPORTS_BIG_ENDIAN
1271 select DMA_NONCOHERENT
1272 select SYS_HAS_CPU_MIPS32_R2
1273 select SYS_SUPPORTS_32BIT_KERNEL
1274 select SYS_SUPPORTS_LITTLE_ENDIAN
1275 select SYS_SUPPORTS_BIG_ENDIAN
1276 select SYS_SUPPORTS_MIPS16
1277 select CPU_MIPSR2_IRQ_VI
1286 config SWAP_IO_SPACE
1289 config SGI_HAS_INDYDOG
1301 config SGI_HAS_ZILOG
1304 config SGI_HAS_I8042
1307 config DEFAULT_SGI_PARTITION
1319 config MIPS_L1_CACHE_SHIFT_4
1322 config MIPS_L1_CACHE_SHIFT_5
1325 config MIPS_L1_CACHE_SHIFT_6
1328 config MIPS_L1_CACHE_SHIFT_7
1331 config MIPS_L1_CACHE_SHIFT
1333 default "7" if MIPS_L1_CACHE_SHIFT_7
1334 default "6" if MIPS_L1_CACHE_SHIFT_6
1335 default "5" if MIPS_L1_CACHE_SHIFT_5
1336 default "4" if MIPS_L1_CACHE_SHIFT_4
1339 config HAVE_STD_PC_SERIAL_PORT
1343 bool "ARC console support"
1344 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1348 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1353 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1362 menu "CPU selection"
1368 config CPU_LOONGSON3
1369 bool "Loongson 3 CPU"
1370 depends on SYS_HAS_CPU_LOONGSON3
1371 select CPU_SUPPORTS_64BIT_KERNEL
1372 select CPU_SUPPORTS_HIGHMEM
1373 select CPU_SUPPORTS_HUGEPAGES
1374 select WEAK_ORDERING
1375 select WEAK_REORDERING_BEYOND_LLSC
1376 select MIPS_PGD_C0_CONTEXT
1379 The Loongson 3 processor implements the MIPS64R2 instruction
1380 set with many extensions.
1382 config LOONGSON3_ENHANCEMENT
1383 bool "New Loongson 3 CPU Enhancements"
1386 select CPU_HAS_PREFETCH
1387 depends on CPU_LOONGSON3
1389 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1390 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1391 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1392 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1393 Fast TLB refill support, etc.
1395 This option enable those enhancements which are not probed at run
1396 time. If you want a generic kernel to run on all Loongson 3 machines,
1397 please say 'N' here. If you want a high-performance kernel to run on
1398 new Loongson 3 machines only, please say 'Y' here.
1400 config CPU_LOONGSON2E
1402 depends on SYS_HAS_CPU_LOONGSON2E
1403 select CPU_LOONGSON2
1405 The Loongson 2E processor implements the MIPS III instruction set
1406 with many extensions.
1408 It has an internal FPGA northbridge, which is compatible to
1411 config CPU_LOONGSON2F
1413 depends on SYS_HAS_CPU_LOONGSON2F
1414 select CPU_LOONGSON2
1417 The Loongson 2F processor implements the MIPS III instruction set
1418 with many extensions.
1420 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1421 have a similar programming interface with FPGA northbridge used in
1424 config CPU_LOONGSON1B
1426 depends on SYS_HAS_CPU_LOONGSON1B
1427 select CPU_LOONGSON1
1428 select LEDS_GPIO_REGISTER
1430 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1431 release 2 instruction set.
1433 config CPU_LOONGSON1C
1435 depends on SYS_HAS_CPU_LOONGSON1C
1436 select CPU_LOONGSON1
1437 select LEDS_GPIO_REGISTER
1439 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1440 release 2 instruction set.
1442 config CPU_MIPS32_R1
1443 bool "MIPS32 Release 1"
1444 depends on SYS_HAS_CPU_MIPS32_R1
1445 select CPU_HAS_PREFETCH
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select CPU_SUPPORTS_HIGHMEM
1449 Choose this option to build a kernel for release 1 or later of the
1450 MIPS32 architecture. Most modern embedded systems with a 32-bit
1451 MIPS processor are based on a MIPS32 processor. If you know the
1452 specific type of processor in your system, choose those that one
1453 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1454 Release 2 of the MIPS32 architecture is available since several
1455 years so chances are you even have a MIPS32 Release 2 processor
1456 in which case you should choose CPU_MIPS32_R2 instead for better
1459 config CPU_MIPS32_R2
1460 bool "MIPS32 Release 2"
1461 depends on SYS_HAS_CPU_MIPS32_R2
1462 select CPU_HAS_PREFETCH
1463 select CPU_SUPPORTS_32BIT_KERNEL
1464 select CPU_SUPPORTS_HIGHMEM
1465 select CPU_SUPPORTS_MSA
1468 Choose this option to build a kernel for release 2 or later of the
1469 MIPS32 architecture. Most modern embedded systems with a 32-bit
1470 MIPS processor are based on a MIPS32 processor. If you know the
1471 specific type of processor in your system, choose those that one
1472 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1474 config CPU_MIPS32_R6
1475 bool "MIPS32 Release 6"
1476 depends on SYS_HAS_CPU_MIPS32_R6
1477 select CPU_HAS_PREFETCH
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_HIGHMEM
1480 select CPU_SUPPORTS_MSA
1483 select MIPS_O32_FP64_SUPPORT
1485 Choose this option to build a kernel for release 6 or later of the
1486 MIPS32 architecture. New MIPS processors, starting with the Warrior
1487 family, are based on a MIPS32r6 processor. If you own an older
1488 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1490 config CPU_MIPS64_R1
1491 bool "MIPS64 Release 1"
1492 depends on SYS_HAS_CPU_MIPS64_R1
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1497 select CPU_SUPPORTS_HUGEPAGES
1499 Choose this option to build a kernel for release 1 or later of the
1500 MIPS64 architecture. Many modern embedded systems with a 64-bit
1501 MIPS processor are based on a MIPS64 processor. If you know the
1502 specific type of processor in your system, choose those that one
1503 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1504 Release 2 of the MIPS64 architecture is available since several
1505 years so chances are you even have a MIPS64 Release 2 processor
1506 in which case you should choose CPU_MIPS64_R2 instead for better
1509 config CPU_MIPS64_R2
1510 bool "MIPS64 Release 2"
1511 depends on SYS_HAS_CPU_MIPS64_R2
1512 select CPU_HAS_PREFETCH
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_HUGEPAGES
1517 select CPU_SUPPORTS_MSA
1520 Choose this option to build a kernel for release 2 or later of the
1521 MIPS64 architecture. Many modern embedded systems with a 64-bit
1522 MIPS processor are based on a MIPS64 processor. If you know the
1523 specific type of processor in your system, choose those that one
1524 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1526 config CPU_MIPS64_R6
1527 bool "MIPS64 Release 6"
1528 depends on SYS_HAS_CPU_MIPS64_R6
1529 select CPU_HAS_PREFETCH
1530 select CPU_SUPPORTS_32BIT_KERNEL
1531 select CPU_SUPPORTS_64BIT_KERNEL
1532 select CPU_SUPPORTS_HIGHMEM
1533 select CPU_SUPPORTS_MSA
1535 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1538 Choose this option to build a kernel for release 6 or later of the
1539 MIPS64 architecture. New MIPS processors, starting with the Warrior
1540 family, are based on a MIPS64r6 processor. If you own an older
1541 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1545 depends on SYS_HAS_CPU_R3000
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1550 Please make sure to pick the right CPU type. Linux/MIPS is not
1551 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1552 *not* work on R4000 machines and vice versa. However, since most
1553 of the supported machines have an R4000 (or similar) CPU, R4x00
1554 might be a safe bet. If the resulting kernel does not work,
1555 try to recompile with R3000.
1559 depends on SYS_HAS_CPU_TX39XX
1560 select CPU_SUPPORTS_32BIT_KERNEL
1564 depends on SYS_HAS_CPU_VR41XX
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_SUPPORTS_64BIT_KERNEL
1568 The options selects support for the NEC VR4100 series of processors.
1569 Only choose this option if you have one of these processors as a
1570 kernel built with this option will not run on any other type of
1571 processor or vice versa.
1575 depends on SYS_HAS_CPU_R4300
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_64BIT_KERNEL
1579 MIPS Technologies R4300-series processors.
1583 depends on SYS_HAS_CPU_R4X00
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HUGEPAGES
1588 MIPS Technologies R4000-series processors other than 4300, including
1589 the R4000, R4400, R4600, and 4700.
1593 depends on SYS_HAS_CPU_TX49XX
1594 select CPU_HAS_PREFETCH
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1601 depends on SYS_HAS_CPU_R5000
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HUGEPAGES
1606 MIPS Technologies R5000-series processors other than the Nevada.
1610 depends on SYS_HAS_CPU_R5432
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1617 depends on SYS_HAS_CPU_R5500
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HUGEPAGES
1622 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1627 depends on SYS_HAS_CPU_R6000
1628 select CPU_SUPPORTS_32BIT_KERNEL
1630 MIPS Technologies R6000 and R6000A series processors. Note these
1631 processors are extremely rare and the support for them is incomplete.
1635 depends on SYS_HAS_CPU_NEVADA
1636 select CPU_SUPPORTS_32BIT_KERNEL
1637 select CPU_SUPPORTS_64BIT_KERNEL
1638 select CPU_SUPPORTS_HUGEPAGES
1640 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1644 depends on SYS_HAS_CPU_R8000
1645 select CPU_HAS_PREFETCH
1646 select CPU_SUPPORTS_64BIT_KERNEL
1648 MIPS Technologies R8000 processors. Note these processors are
1649 uncommon and the support for them is incomplete.
1653 depends on SYS_HAS_CPU_R10000
1654 select CPU_HAS_PREFETCH
1655 select CPU_SUPPORTS_32BIT_KERNEL
1656 select CPU_SUPPORTS_64BIT_KERNEL
1657 select CPU_SUPPORTS_HIGHMEM
1658 select CPU_SUPPORTS_HUGEPAGES
1660 MIPS Technologies R10000-series processors.
1664 depends on SYS_HAS_CPU_RM7000
1665 select CPU_HAS_PREFETCH
1666 select CPU_SUPPORTS_32BIT_KERNEL
1667 select CPU_SUPPORTS_64BIT_KERNEL
1668 select CPU_SUPPORTS_HIGHMEM
1669 select CPU_SUPPORTS_HUGEPAGES
1673 depends on SYS_HAS_CPU_SB1
1674 select CPU_SUPPORTS_32BIT_KERNEL
1675 select CPU_SUPPORTS_64BIT_KERNEL
1676 select CPU_SUPPORTS_HIGHMEM
1677 select CPU_SUPPORTS_HUGEPAGES
1678 select WEAK_ORDERING
1680 config CPU_CAVIUM_OCTEON
1681 bool "Cavium Octeon processor"
1682 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1683 select CPU_HAS_PREFETCH
1684 select CPU_SUPPORTS_64BIT_KERNEL
1685 select WEAK_ORDERING
1686 select CPU_SUPPORTS_HIGHMEM
1687 select CPU_SUPPORTS_HUGEPAGES
1688 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1689 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1690 select MIPS_L1_CACHE_SHIFT_7
1692 The Cavium Octeon processor is a highly integrated chip containing
1693 many ethernet hardware widgets for networking tasks. The processor
1694 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1695 Full details can be found at http://www.caviumnetworks.com.
1698 bool "Broadcom BMIPS"
1699 depends on SYS_HAS_CPU_BMIPS
1701 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1702 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1703 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1704 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select DMA_NONCOHERENT
1708 select SWAP_IO_SPACE
1709 select WEAK_ORDERING
1710 select CPU_SUPPORTS_HIGHMEM
1711 select CPU_HAS_PREFETCH
1712 select CPU_SUPPORTS_CPUFREQ
1713 select MIPS_EXTERNAL_TIMER
1715 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1718 bool "Netlogic XLR SoC"
1719 depends on SYS_HAS_CPU_XLR
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_HUGEPAGES
1724 select WEAK_ORDERING
1725 select WEAK_REORDERING_BEYOND_LLSC
1727 Netlogic Microsystems XLR/XLS processors.
1730 bool "Netlogic XLP SoC"
1731 depends on SYS_HAS_CPU_XLP
1732 select CPU_SUPPORTS_32BIT_KERNEL
1733 select CPU_SUPPORTS_64BIT_KERNEL
1734 select CPU_SUPPORTS_HIGHMEM
1735 select WEAK_ORDERING
1736 select WEAK_REORDERING_BEYOND_LLSC
1737 select CPU_HAS_PREFETCH
1739 select CPU_SUPPORTS_HUGEPAGES
1740 select MIPS_ASID_BITS_VARIABLE
1742 Netlogic Microsystems XLP processors.
1745 config CPU_MIPS32_3_5_FEATURES
1746 bool "MIPS32 Release 3.5 Features"
1747 depends on SYS_HAS_CPU_MIPS32_R3_5
1748 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1750 Choose this option to build a kernel for release 2 or later of the
1751 MIPS32 architecture including features from the 3.5 release such as
1752 support for Enhanced Virtual Addressing (EVA).
1754 config CPU_MIPS32_3_5_EVA
1755 bool "Enhanced Virtual Addressing (EVA)"
1756 depends on CPU_MIPS32_3_5_FEATURES
1760 Choose this option if you want to enable the Enhanced Virtual
1761 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1762 One of its primary benefits is an increase in the maximum size
1763 of lowmem (up to 3GB). If unsure, say 'N' here.
1765 config CPU_MIPS32_R5_FEATURES
1766 bool "MIPS32 Release 5 Features"
1767 depends on SYS_HAS_CPU_MIPS32_R5
1768 depends on CPU_MIPS32_R2
1770 Choose this option to build a kernel for release 2 or later of the
1771 MIPS32 architecture including features from release 5 such as
1772 support for Extended Physical Addressing (XPA).
1774 config CPU_MIPS32_R5_XPA
1775 bool "Extended Physical Addressing (XPA)"
1776 depends on CPU_MIPS32_R5_FEATURES
1778 depends on !PAGE_SIZE_4KB
1779 depends on SYS_SUPPORTS_HIGHMEM
1782 select ARCH_PHYS_ADDR_T_64BIT
1785 Choose this option if you want to enable the Extended Physical
1786 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1787 benefit is to increase physical addressing equal to or greater
1788 than 40 bits. Note that this has the side effect of turning on
1789 64-bit addressing which in turn makes the PTEs 64-bit in size.
1790 If unsure, say 'N' here.
1793 config CPU_NOP_WORKAROUNDS
1796 config CPU_JUMP_WORKAROUNDS
1799 config CPU_LOONGSON2F_WORKAROUNDS
1800 bool "Loongson 2F Workarounds"
1802 select CPU_NOP_WORKAROUNDS
1803 select CPU_JUMP_WORKAROUNDS
1805 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1806 require workarounds. Without workarounds the system may hang
1807 unexpectedly. For more information please refer to the gas
1808 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1810 Loongson 2F03 and later have fixed these issues and no workarounds
1811 are needed. The workarounds have no significant side effect on them
1812 but may decrease the performance of the system so this option should
1813 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1816 If unsure, please say Y.
1817 endif # CPU_LOONGSON2F
1819 config SYS_SUPPORTS_ZBOOT
1821 select HAVE_KERNEL_GZIP
1822 select HAVE_KERNEL_BZIP2
1823 select HAVE_KERNEL_LZ4
1824 select HAVE_KERNEL_LZMA
1825 select HAVE_KERNEL_LZO
1826 select HAVE_KERNEL_XZ
1828 config SYS_SUPPORTS_ZBOOT_UART16550
1830 select SYS_SUPPORTS_ZBOOT
1832 config SYS_SUPPORTS_ZBOOT_UART_PROM
1834 select SYS_SUPPORTS_ZBOOT
1836 config CPU_LOONGSON2
1838 select CPU_SUPPORTS_32BIT_KERNEL
1839 select CPU_SUPPORTS_64BIT_KERNEL
1840 select CPU_SUPPORTS_HIGHMEM
1841 select CPU_SUPPORTS_HUGEPAGES
1843 config CPU_LOONGSON1
1847 select CPU_HAS_PREFETCH
1848 select CPU_SUPPORTS_32BIT_KERNEL
1849 select CPU_SUPPORTS_HIGHMEM
1850 select CPU_SUPPORTS_CPUFREQ
1852 config CPU_BMIPS32_3300
1853 select SMP_UP if SMP
1856 config CPU_BMIPS4350
1858 select SYS_SUPPORTS_SMP
1859 select SYS_SUPPORTS_HOTPLUG_CPU
1861 config CPU_BMIPS4380
1863 select MIPS_L1_CACHE_SHIFT_6
1864 select SYS_SUPPORTS_SMP
1865 select SYS_SUPPORTS_HOTPLUG_CPU
1868 config CPU_BMIPS5000
1870 select MIPS_CPU_SCACHE
1871 select MIPS_L1_CACHE_SHIFT_7
1872 select SYS_SUPPORTS_SMP
1873 select SYS_SUPPORTS_HOTPLUG_CPU
1876 config SYS_HAS_CPU_LOONGSON3
1878 select CPU_SUPPORTS_CPUFREQ
1881 config SYS_HAS_CPU_LOONGSON2E
1884 config SYS_HAS_CPU_LOONGSON2F
1886 select CPU_SUPPORTS_CPUFREQ
1887 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1888 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1890 config SYS_HAS_CPU_LOONGSON1B
1893 config SYS_HAS_CPU_LOONGSON1C
1896 config SYS_HAS_CPU_MIPS32_R1
1899 config SYS_HAS_CPU_MIPS32_R2
1902 config SYS_HAS_CPU_MIPS32_R3_5
1905 config SYS_HAS_CPU_MIPS32_R5
1908 config SYS_HAS_CPU_MIPS32_R6
1911 config SYS_HAS_CPU_MIPS64_R1
1914 config SYS_HAS_CPU_MIPS64_R2
1917 config SYS_HAS_CPU_MIPS64_R6
1920 config SYS_HAS_CPU_R3000
1923 config SYS_HAS_CPU_TX39XX
1926 config SYS_HAS_CPU_VR41XX
1929 config SYS_HAS_CPU_R4300
1932 config SYS_HAS_CPU_R4X00
1935 config SYS_HAS_CPU_TX49XX
1938 config SYS_HAS_CPU_R5000
1941 config SYS_HAS_CPU_R5432
1944 config SYS_HAS_CPU_R5500
1947 config SYS_HAS_CPU_R6000
1950 config SYS_HAS_CPU_NEVADA
1953 config SYS_HAS_CPU_R8000
1956 config SYS_HAS_CPU_R10000
1959 config SYS_HAS_CPU_RM7000
1962 config SYS_HAS_CPU_SB1
1965 config SYS_HAS_CPU_CAVIUM_OCTEON
1968 config SYS_HAS_CPU_BMIPS
1971 config SYS_HAS_CPU_BMIPS32_3300
1973 select SYS_HAS_CPU_BMIPS
1975 config SYS_HAS_CPU_BMIPS4350
1977 select SYS_HAS_CPU_BMIPS
1979 config SYS_HAS_CPU_BMIPS4380
1981 select SYS_HAS_CPU_BMIPS
1983 config SYS_HAS_CPU_BMIPS5000
1985 select SYS_HAS_CPU_BMIPS
1987 config SYS_HAS_CPU_XLR
1990 config SYS_HAS_CPU_XLP
1993 config MIPS_MALTA_PM
1994 depends on MIPS_MALTA
2000 # CPU may reorder R->R, R->W, W->R, W->W
2001 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2003 config WEAK_ORDERING
2007 # CPU may reorder reads and writes beyond LL/SC
2008 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2010 config WEAK_REORDERING_BEYOND_LLSC
2015 # These two indicate any level of the MIPS32 and MIPS64 architecture
2019 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2023 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2026 # These two indicate the revision of the architecture, either Release 1 or Release 2
2030 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2034 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2040 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2042 select HAVE_ARCH_BITREVERSE
2043 select MIPS_ASID_BITS_VARIABLE
2052 config SYS_SUPPORTS_32BIT_KERNEL
2054 config SYS_SUPPORTS_64BIT_KERNEL
2056 config CPU_SUPPORTS_32BIT_KERNEL
2058 config CPU_SUPPORTS_64BIT_KERNEL
2060 config CPU_SUPPORTS_CPUFREQ
2062 config CPU_SUPPORTS_ADDRWINCFG
2064 config CPU_SUPPORTS_HUGEPAGES
2066 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2068 config MIPS_PGD_C0_CONTEXT
2070 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2073 # Set to y for ptrace access to watch registers.
2075 config HARDWARE_WATCHPOINTS
2077 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2082 prompt "Kernel code model"
2084 You should only select this option if you have a workload that
2085 actually benefits from 64-bit processing or if your machine has
2086 large memory. You will only be presented a single option in this
2087 menu if your system does not support both 32-bit and 64-bit kernels.
2090 bool "32-bit kernel"
2091 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2094 Select this option if you want to build a 32-bit kernel.
2097 bool "64-bit kernel"
2098 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2100 Select this option if you want to build a 64-bit kernel.
2105 bool "KVM Guest Kernel"
2106 depends on BROKEN_ON_SMP
2108 Select this option if building a guest kernel for KVM (Trap & Emulate)
2111 config KVM_GUEST_TIMER_FREQ
2112 int "Count/Compare Timer Frequency (MHz)"
2113 depends on KVM_GUEST
2116 Set this to non-zero if building a guest kernel for KVM to skip RTC
2117 emulation when determining guest CPU Frequency. Instead, the guest's
2118 timer frequency is specified directly.
2120 config MIPS_VA_BITS_48
2121 bool "48 bits virtual memory"
2124 Support a maximum at least 48 bits of application virtual memory.
2125 Default is 40 bits or less, depending on the CPU.
2126 This option result in a small memory overhead for page tables.
2127 This option is only supported with 16k and 64k page sizes.
2131 prompt "Kernel page size"
2132 default PAGE_SIZE_4KB
2134 config PAGE_SIZE_4KB
2136 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2137 depends on !MIPS_VA_BITS_48
2139 This option select the standard 4kB Linux page size. On some
2140 R3000-family processors this is the only available page size. Using
2141 4kB page size will minimize memory consumption and is therefore
2142 recommended for low memory systems.
2144 config PAGE_SIZE_8KB
2146 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2147 depends on !MIPS_VA_BITS_48
2149 Using 8kB page size will result in higher performance kernel at
2150 the price of higher memory consumption. This option is available
2151 only on R8000 and cnMIPS processors. Note that you will need a
2152 suitable Linux distribution to support this.
2154 config PAGE_SIZE_16KB
2156 depends on !CPU_R3000 && !CPU_TX39XX
2158 Using 16kB page size will result in higher performance kernel at
2159 the price of higher memory consumption. This option is available on
2160 all non-R3000 family processors. Note that you will need a suitable
2161 Linux distribution to support this.
2163 config PAGE_SIZE_32KB
2165 depends on CPU_CAVIUM_OCTEON
2166 depends on !MIPS_VA_BITS_48
2168 Using 32kB page size will result in higher performance kernel at
2169 the price of higher memory consumption. This option is available
2170 only on cnMIPS cores. Note that you will need a suitable Linux
2171 distribution to support this.
2173 config PAGE_SIZE_64KB
2175 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2177 Using 64kB page size will result in higher performance kernel at
2178 the price of higher memory consumption. This option is available on
2179 all non-R3000 family processor. Not that at the time of this
2180 writing this option is still high experimental.
2184 config FORCE_MAX_ZONEORDER
2185 int "Maximum zone order"
2186 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2187 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2188 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2189 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2190 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2191 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2195 The kernel memory allocator divides physically contiguous memory
2196 blocks into "zones", where each zone is a power of two number of
2197 pages. This option selects the largest power of two that the kernel
2198 keeps in the memory allocator. If you need to allocate very large
2199 blocks of physically contiguous memory, then you may need to
2200 increase this value.
2202 This config option is actually maximum order plus one. For example,
2203 a value of 11 means that the largest free memory block is 2^10 pages.
2205 The page size is not necessarily 4KB. Keep this in mind
2206 when choosing a value for this option.
2211 config IP22_CPU_SCACHE
2216 # Support for a MIPS32 / MIPS64 style S-caches
2218 config MIPS_CPU_SCACHE
2222 config R5000_CPU_SCACHE
2226 config RM7000_CPU_SCACHE
2230 config SIBYTE_DMA_PAGEOPS
2231 bool "Use DMA to clear/copy pages"
2234 Instead of using the CPU to zero and copy pages, use a Data Mover
2235 channel. These DMA channels are otherwise unused by the standard
2236 SiByte Linux port. Seems to give a small performance benefit.
2238 config CPU_HAS_PREFETCH
2241 config CPU_GENERIC_DUMP_TLB
2243 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2247 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2249 config CPU_R4K_CACHE_TLB
2251 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2254 bool "MIPS MT SMP support (1 TC on each available VPE)"
2255 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2256 select CPU_MIPSR2_IRQ_VI
2257 select CPU_MIPSR2_IRQ_EI
2262 select SYS_SUPPORTS_SMP
2263 select SYS_SUPPORTS_SCHED_SMT
2264 select MIPS_PERF_SHARED_TC_COUNTERS
2266 This is a kernel model which is known as SMVP. This is supported
2267 on cores with the MT ASE and uses the available VPEs to implement
2268 virtual processors which supports SMP. This is equivalent to the
2269 Intel Hyperthreading feature. For further information go to
2270 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2276 bool "SMT (multithreading) scheduler support"
2277 depends on SYS_SUPPORTS_SCHED_SMT
2280 SMT scheduler support improves the CPU scheduler's decision making
2281 when dealing with MIPS MT enabled cores at a cost of slightly
2282 increased overhead in some places. If unsure say N here.
2284 config SYS_SUPPORTS_SCHED_SMT
2287 config SYS_SUPPORTS_MULTITHREADING
2290 config MIPS_MT_FPAFF
2291 bool "Dynamic FPU affinity for FP-intensive threads"
2293 depends on MIPS_MT_SMP
2295 config MIPSR2_TO_R6_EMULATOR
2296 bool "MIPS R2-to-R6 emulator"
2297 depends on CPU_MIPSR6
2300 Choose this option if you want to run non-R6 MIPS userland code.
2301 Even if you say 'Y' here, the emulator will still be disabled by
2302 default. You can enable it using the 'mipsr2emu' kernel option.
2303 The only reason this is a build-time option is to save ~14K from the
2306 config MIPS_VPE_LOADER
2307 bool "VPE loader support."
2308 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2309 select CPU_MIPSR2_IRQ_VI
2310 select CPU_MIPSR2_IRQ_EI
2313 Includes a loader for loading an elf relocatable object
2314 onto another VPE and running it.
2316 config MIPS_VPE_LOADER_CMP
2319 depends on MIPS_VPE_LOADER && MIPS_CMP
2321 config MIPS_VPE_LOADER_MT
2324 depends on MIPS_VPE_LOADER && !MIPS_CMP
2326 config MIPS_VPE_LOADER_TOM
2327 bool "Load VPE program into memory hidden from linux"
2328 depends on MIPS_VPE_LOADER
2331 The loader can use memory that is present but has been hidden from
2332 Linux using the kernel command line option "mem=xxMB". It's up to
2333 you to ensure the amount you put in the option and the space your
2334 program requires is less or equal to the amount physically present.
2336 config MIPS_VPE_APSP_API
2337 bool "Enable support for AP/SP API (RTLX)"
2338 depends on MIPS_VPE_LOADER
2341 config MIPS_VPE_APSP_API_CMP
2344 depends on MIPS_VPE_APSP_API && MIPS_CMP
2346 config MIPS_VPE_APSP_API_MT
2349 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2352 bool "MIPS CMP framework support (DEPRECATED)"
2353 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2356 select SYS_SUPPORTS_SMP
2357 select WEAK_ORDERING
2360 Select this if you are using a bootloader which implements the "CMP
2361 framework" protocol (ie. YAMON) and want your kernel to make use of
2362 its ability to start secondary CPUs.
2364 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2368 bool "MIPS Coherent Processing System support"
2369 depends on SYS_SUPPORTS_MIPS_CPS
2372 select MIPS_CPS_PM if HOTPLUG_CPU
2374 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2375 select SYS_SUPPORTS_HOTPLUG_CPU
2376 select SYS_SUPPORTS_SMP
2377 select WEAK_ORDERING
2379 Select this if you wish to run an SMP kernel across multiple cores
2380 within a MIPS Coherent Processing System. When this option is
2381 enabled the kernel will probe for other cores and boot them with
2382 no external assistance. It is safe to enable this when hardware
2383 support is unavailable.
2396 config SB1_PASS_2_WORKAROUNDS
2398 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2401 config SB1_PASS_2_1_WORKAROUNDS
2403 depends on CPU_SB1 && CPU_SB1_PASS_2
2407 config ARCH_PHYS_ADDR_T_64BIT
2411 prompt "SmartMIPS or microMIPS ASE support"
2413 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2416 Select this if you want neither microMIPS nor SmartMIPS support
2418 config CPU_HAS_SMARTMIPS
2419 depends on SYS_SUPPORTS_SMARTMIPS
2422 SmartMIPS is a extension of the MIPS32 architecture aimed at
2423 increased security at both hardware and software level for
2424 smartcards. Enabling this option will allow proper use of the
2425 SmartMIPS instructions by Linux applications. However a kernel with
2426 this option will not work on a MIPS core without SmartMIPS core. If
2427 you don't know you probably don't have SmartMIPS and should say N
2430 config CPU_MICROMIPS
2431 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2434 When this option is enabled the kernel will be built using the
2440 bool "Support for the MIPS SIMD Architecture"
2441 depends on CPU_SUPPORTS_MSA
2442 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2444 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2445 and a set of SIMD instructions to operate on them. When this option
2446 is enabled the kernel will support allocating & switching MSA
2447 vector register contexts. If you know that your kernel will only be
2448 running on CPUs which do not support MSA or that your userland will
2449 not be making use of it then you may wish to say N here to reduce
2450 the size & complexity of your kernel.
2464 # Vectored interrupt mode is an R2 feature
2466 config CPU_MIPSR2_IRQ_VI
2470 # Extended interrupt mode is an R2 feature
2472 config CPU_MIPSR2_IRQ_EI
2477 depends on !CPU_R3000
2483 config CPU_DADDI_WORKAROUNDS
2486 config CPU_R4000_WORKAROUNDS
2488 select CPU_R4400_WORKAROUNDS
2490 config CPU_R4400_WORKAROUNDS
2493 config MIPS_ASID_SHIFT
2495 default 6 if CPU_R3000 || CPU_TX39XX
2496 default 4 if CPU_R8000
2499 config MIPS_ASID_BITS
2501 default 0 if MIPS_ASID_BITS_VARIABLE
2502 default 6 if CPU_R3000 || CPU_TX39XX
2505 config MIPS_ASID_BITS_VARIABLE
2509 # - Highmem only makes sense for the 32-bit kernel.
2510 # - The current highmem code will only work properly on physically indexed
2511 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2512 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2513 # moment we protect the user and offer the highmem option only on machines
2514 # where it's known to be safe. This will not offer highmem on a few systems
2515 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2516 # indexed CPUs but we're playing safe.
2517 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2518 # know they might have memory configurations that could make use of highmem
2522 bool "High Memory Support"
2523 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2525 config CPU_SUPPORTS_HIGHMEM
2528 config SYS_SUPPORTS_HIGHMEM
2531 config SYS_SUPPORTS_SMARTMIPS
2534 config SYS_SUPPORTS_MICROMIPS
2537 config SYS_SUPPORTS_MIPS16
2540 This option must be set if a kernel might be executed on a MIPS16-
2541 enabled CPU even if MIPS16 is not actually being used. In other
2542 words, it makes the kernel MIPS16-tolerant.
2544 config CPU_SUPPORTS_MSA
2547 config ARCH_FLATMEM_ENABLE
2549 depends on !NUMA && !CPU_LOONGSON2
2551 config ARCH_DISCONTIGMEM_ENABLE
2553 default y if SGI_IP27
2555 Say Y to support efficient handling of discontiguous physical memory,
2556 for architectures which are either NUMA (Non-Uniform Memory Access)
2557 or have huge holes in the physical address space for other reasons.
2558 See <file:Documentation/vm/numa> for more.
2560 config ARCH_SPARSEMEM_ENABLE
2562 select SPARSEMEM_STATIC
2566 depends on SYS_SUPPORTS_NUMA
2568 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2569 Access). This option improves performance on systems with more
2570 than two nodes; on two node systems it is generally better to
2571 leave it disabled; on single node systems disable this option
2574 config SYS_SUPPORTS_NUMA
2578 bool "Relocatable kernel"
2579 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2581 This builds a kernel image that retains relocation information
2582 so it can be loaded someplace besides the default 1MB.
2583 The relocations make the kernel binary about 15% larger,
2584 but are discarded at runtime
2586 config RELOCATION_TABLE_SIZE
2587 hex "Relocation table size"
2588 depends on RELOCATABLE
2589 range 0x0 0x01000000
2590 default "0x00100000"
2592 A table of relocation data will be appended to the kernel binary
2593 and parsed at boot to fix up the relocated kernel.
2595 This option allows the amount of space reserved for the table to be
2596 adjusted, although the default of 1Mb should be ok in most cases.
2598 The build will fail and a valid size suggested if this is too small.
2600 If unsure, leave at the default value.
2602 config RANDOMIZE_BASE
2603 bool "Randomize the address of the kernel image"
2604 depends on RELOCATABLE
2606 Randomizes the physical and virtual address at which the
2607 kernel image is loaded, as a security feature that
2608 deters exploit attempts relying on knowledge of the location
2609 of kernel internals.
2611 Entropy is generated using any coprocessor 0 registers available.
2613 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2617 config RANDOMIZE_BASE_MAX_OFFSET
2618 hex "Maximum kASLR offset" if EXPERT
2619 depends on RANDOMIZE_BASE
2620 range 0x0 0x40000000 if EVA || 64BIT
2621 range 0x0 0x08000000
2622 default "0x01000000"
2624 When kASLR is active, this provides the maximum offset that will
2625 be applied to the kernel image. It should be set according to the
2626 amount of physical RAM available in the target system minus
2627 PHYSICAL_START and must be a power of 2.
2629 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2630 EVA or 64-bit. The default is 16Mb.
2635 depends on NEED_MULTIPLE_NODES
2637 config HW_PERF_EVENTS
2638 bool "Enable hardware performance counter support for perf events"
2639 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2642 Enable hardware performance counter support for perf events. If
2643 disabled, perf events will use software events only.
2648 bool "Multi-Processing support"
2649 depends on SYS_SUPPORTS_SMP
2651 This enables support for systems with more than one CPU. If you have
2652 a system with only one CPU, say N. If you have a system with more
2653 than one CPU, say Y.
2655 If you say N here, the kernel will run on uni- and multiprocessor
2656 machines, but will use only one CPU of a multiprocessor machine. If
2657 you say Y here, the kernel will run on many, but not all,
2658 uniprocessor machines. On a uniprocessor machine, the kernel
2659 will run faster if you say N here.
2661 People using multiprocessor machines who say Y here should also say
2662 Y to "Enhanced Real Time Clock Support", below.
2664 See also the SMP-HOWTO available at
2665 <http://www.tldp.org/docs.html#howto>.
2667 If you don't know what to do here, say N.
2670 bool "Support for hot-pluggable CPUs"
2671 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2673 Say Y here to allow turning CPUs off and on. CPUs can be
2674 controlled through /sys/devices/system/cpu.
2675 (Note: power management support will enable this option
2676 automatically on SMP systems. )
2677 Say N if you want to disable CPU hotplug.
2682 config SYS_SUPPORTS_MIPS_CMP
2685 config SYS_SUPPORTS_MIPS_CPS
2688 config SYS_SUPPORTS_SMP
2691 config NR_CPUS_DEFAULT_4
2694 config NR_CPUS_DEFAULT_8
2697 config NR_CPUS_DEFAULT_16
2700 config NR_CPUS_DEFAULT_32
2703 config NR_CPUS_DEFAULT_64
2707 int "Maximum number of CPUs (2-256)"
2710 default "4" if NR_CPUS_DEFAULT_4
2711 default "8" if NR_CPUS_DEFAULT_8
2712 default "16" if NR_CPUS_DEFAULT_16
2713 default "32" if NR_CPUS_DEFAULT_32
2714 default "64" if NR_CPUS_DEFAULT_64
2716 This allows you to specify the maximum number of CPUs which this
2717 kernel will support. The maximum supported value is 32 for 32-bit
2718 kernel and 64 for 64-bit kernels; the minimum value which makes
2719 sense is 1 for Qemu (useful only for kernel debugging purposes)
2720 and 2 for all others.
2722 This is purely to save memory - each supported CPU adds
2723 approximately eight kilobytes to the kernel image. For best
2724 performance should round up your number of processors to the next
2727 config MIPS_PERF_SHARED_TC_COUNTERS
2731 # Timer Interrupt Frequency Configuration
2735 prompt "Timer frequency"
2738 Allows the configuration of the timer frequency.
2741 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2744 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2747 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2750 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2762 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2766 config SYS_SUPPORTS_24HZ
2769 config SYS_SUPPORTS_48HZ
2772 config SYS_SUPPORTS_100HZ
2775 config SYS_SUPPORTS_128HZ
2778 config SYS_SUPPORTS_250HZ
2781 config SYS_SUPPORTS_256HZ
2784 config SYS_SUPPORTS_1000HZ
2787 config SYS_SUPPORTS_1024HZ
2790 config SYS_SUPPORTS_ARBIT_HZ
2792 default y if !SYS_SUPPORTS_24HZ && \
2793 !SYS_SUPPORTS_48HZ && \
2794 !SYS_SUPPORTS_100HZ && \
2795 !SYS_SUPPORTS_128HZ && \
2796 !SYS_SUPPORTS_250HZ && \
2797 !SYS_SUPPORTS_256HZ && \
2798 !SYS_SUPPORTS_1000HZ && \
2799 !SYS_SUPPORTS_1024HZ
2805 default 100 if HZ_100
2806 default 128 if HZ_128
2807 default 250 if HZ_250
2808 default 256 if HZ_256
2809 default 1000 if HZ_1000
2810 default 1024 if HZ_1024
2813 def_bool HIGH_RES_TIMERS
2815 source "kernel/Kconfig.preempt"
2818 bool "Kexec system call"
2821 kexec is a system call that implements the ability to shutdown your
2822 current kernel, and to start another kernel. It is like a reboot
2823 but it is independent of the system firmware. And like a reboot
2824 you can start any kernel with it, not just Linux.
2826 The name comes from the similarity to the exec system call.
2828 It is an ongoing process to be certain the hardware in a machine
2829 is properly shutdown, so do not be surprised if this code does not
2830 initially work for you. As of this writing the exact hardware
2831 interface is strongly in flux, so no good recommendation can be
2835 bool "Kernel crash dumps"
2837 Generate crash dump after being started by kexec.
2838 This should be normally only set in special crash dump kernels
2839 which are loaded in the main kernel with kexec-tools into
2840 a specially reserved region and then later executed after
2841 a crash by kdump/kexec. The crash dump kernel must be compiled
2842 to a memory address not used by the main kernel or firmware using
2845 config PHYSICAL_START
2846 hex "Physical address where the kernel is loaded"
2847 default "0xffffffff84000000" if 64BIT
2848 default "0x84000000" if 32BIT
2849 depends on CRASH_DUMP
2851 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2852 If you plan to use kernel for capturing the crash dump change
2853 this value to start of the reserved region (the "X" value as
2854 specified in the "crashkernel=YM@XM" command line boot parameter
2855 passed to the panic-ed kernel).
2858 bool "Enable seccomp to safely compute untrusted bytecode"
2862 This kernel feature is useful for number crunching applications
2863 that may need to compute untrusted bytecode during their
2864 execution. By using pipes or other transports made available to
2865 the process as file descriptors supporting the read/write
2866 syscalls, it's possible to isolate those applications in
2867 their own address space using seccomp. Once seccomp is
2868 enabled via /proc/<pid>/seccomp, it cannot be disabled
2869 and the task is only allowed to execute a few safe syscalls
2870 defined by each seccomp mode.
2872 If unsure, say Y. Only embedded should say N here.
2874 config MIPS_O32_FP64_SUPPORT
2875 bool "Support for O32 binaries using 64-bit FP"
2876 depends on 32BIT || MIPS32_O32
2878 When this is enabled, the kernel will support use of 64-bit floating
2879 point registers with binaries using the O32 ABI along with the
2880 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2881 32-bit MIPS systems this support is at the cost of increasing the
2882 size and complexity of the compiled FPU emulator. Thus if you are
2883 running a MIPS32 system and know that none of your userland binaries
2884 will require 64-bit floating point, you may wish to reduce the size
2885 of your kernel & potentially improve FP emulation performance by
2888 Although binutils currently supports use of this flag the details
2889 concerning its effect upon the O32 ABI in userland are still being
2890 worked on. In order to avoid userland becoming dependant upon current
2891 behaviour before the details have been finalised, this option should
2892 be considered experimental and only enabled by those working upon
2900 select OF_EARLY_FLATTREE
2907 prompt "Kernel appended dtb support" if USE_OF
2908 default MIPS_NO_APPENDED_DTB
2910 config MIPS_NO_APPENDED_DTB
2913 Do not enable appended dtb support.
2915 config MIPS_ELF_APPENDED_DTB
2918 With this option, the boot code will look for a device tree binary
2919 DTB) included in the vmlinux ELF section .appended_dtb. By default
2920 it is empty and the DTB can be appended using binutils command
2923 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2925 This is meant as a backward compatiblity convenience for those
2926 systems with a bootloader that can't be upgraded to accommodate
2927 the documented boot protocol using a device tree.
2929 config MIPS_RAW_APPENDED_DTB
2930 bool "vmlinux.bin or vmlinuz.bin"
2932 With this option, the boot code will look for a device tree binary
2933 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2934 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2936 This is meant as a backward compatibility convenience for those
2937 systems with a bootloader that can't be upgraded to accommodate
2938 the documented boot protocol using a device tree.
2940 Beware that there is very little in terms of protection against
2941 this option being confused by leftover garbage in memory that might
2942 look like a DTB header after a reboot if no actual DTB is appended
2943 to vmlinux.bin. Do not leave this option active in a production kernel
2944 if you don't intend to always append a DTB.
2948 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2949 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2952 default MIPS_CMDLINE_FROM_BOOTLOADER
2954 config MIPS_CMDLINE_FROM_DTB
2956 bool "Dtb kernel arguments if available"
2958 config MIPS_CMDLINE_DTB_EXTEND
2960 bool "Extend dtb kernel arguments with bootloader arguments"
2962 config MIPS_CMDLINE_FROM_BOOTLOADER
2963 bool "Bootloader kernel arguments if available"
2965 config MIPS_CMDLINE_BUILTIN_EXTEND
2966 depends on CMDLINE_BOOL
2967 bool "Extend builtin kernel arguments with bootloader arguments"
2972 config LOCKDEP_SUPPORT
2976 config STACKTRACE_SUPPORT
2980 config HAVE_LATENCYTOP_SUPPORT
2984 config PGTABLE_LEVELS
2986 default 3 if 64BIT && !PAGE_SIZE_64KB
2989 source "init/Kconfig"
2991 source "kernel/Kconfig.freezer"
2993 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3001 bool "Support for PCI controller"
3002 depends on HW_HAS_PCI
3005 Find out whether you have a PCI motherboard. PCI is the name of a
3006 bus system, i.e. the way the CPU talks to the other stuff inside
3007 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3011 bool "Support for HT-linked PCI"
3013 depends on CPU_LOONGSON3
3017 Loongson family machines use Hyper-Transport bus for inter-core
3018 connection and device connection. The PCI bus is a subordinate
3019 linked at HT. Choose Y for Loongson-3 based machines.
3024 config PCI_DOMAINS_GENERIC
3027 config PCI_DRIVERS_GENERIC
3028 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3031 config PCI_DRIVERS_LEGACY
3032 def_bool !PCI_DRIVERS_GENERIC
3033 select NO_GENERIC_PCI_IOPORT_MAP
3035 source "drivers/pci/Kconfig"
3038 # ISA support is now enabled via select. Too many systems still have the one
3039 # or other ISA chip on the board that users don't know about so don't expect
3040 # users to choose the right thing ...
3047 depends on HW_HAS_EISA
3049 select GENERIC_ISA_DMA
3051 The Extended Industry Standard Architecture (EISA) bus was
3052 developed as an open alternative to the IBM MicroChannel bus.
3054 The EISA bus provided some of the features of the IBM MicroChannel
3055 bus while maintaining backward compatibility with cards made for
3056 the older ISA bus. The EISA bus saw limited use between 1988 and
3057 1995 when it was made obsolete by the PCI bus.
3059 Say Y here if you are building a kernel for an EISA-based machine.
3063 source "drivers/eisa/Kconfig"
3066 bool "TURBOchannel support"
3067 depends on MACH_DECSTATION
3069 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3070 processors. TURBOchannel programming specifications are available
3072 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3074 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3075 Linux driver support status is documented at:
3076 <http://www.linux-mips.org/wiki/DECstation>
3082 config ARCH_MMAP_RND_BITS_MIN
3086 config ARCH_MMAP_RND_BITS_MAX
3090 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3093 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3100 select MIPS_EXTERNAL_TIMER
3108 source "drivers/pcmcia/Kconfig"
3111 tristate "RapidIO support"
3115 If you say Y here, the kernel will include drivers and
3116 infrastructure code to support RapidIO interconnect devices.
3118 source "drivers/rapidio/Kconfig"
3122 menu "Executable file formats"
3124 source "fs/Kconfig.binfmt"
3129 config MIPS32_COMPAT
3135 config SYSVIPC_COMPAT
3139 bool "Kernel support for o32 binaries"
3141 select ARCH_WANT_OLD_COMPAT_IPC
3143 select MIPS32_COMPAT
3144 select SYSVIPC_COMPAT if SYSVIPC
3146 Select this option if you want to run o32 binaries. These are pure
3147 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3148 existing binaries are in this format.
3153 bool "Kernel support for n32 binaries"
3156 select MIPS32_COMPAT
3157 select SYSVIPC_COMPAT if SYSVIPC
3159 Select this option if you want to run n32 binaries. These are
3160 64-bit binaries using 32-bit quantities for addressing and certain
3161 data that would normally be 64-bit. They are used in special
3168 default y if MIPS32_O32 || MIPS32_N32
3173 menu "Power management options"
3175 config ARCH_HIBERNATION_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 config ARCH_SUSPEND_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 source "kernel/power/Kconfig"
3187 config MIPS_EXTERNAL_TIMER
3190 menu "CPU Power Management"
3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3193 source "drivers/cpufreq/Kconfig"
3196 source "drivers/cpuidle/Kconfig"
3200 source "net/Kconfig"
3202 source "drivers/Kconfig"
3204 source "drivers/firmware/Kconfig"
3208 source "arch/mips/Kconfig.debug"
3210 source "security/Kconfig"
3212 source "crypto/Kconfig"
3214 source "lib/Kconfig"
3216 source "arch/mips/kvm/Kconfig"