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_CPU_AUTOPROBE
50 select GENERIC_CLOCKEVENTS
51 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
52 select GENERIC_CMOS_UPDATE
53 select HAVE_MOD_ARCH_SPECIFIC
56 select MODULES_USE_ELF_REL if MODULES
57 select MODULES_USE_ELF_RELA if MODULES && 64BIT
58 select CLONE_BACKWARDS
59 select HAVE_DEBUG_STACKOVERFLOW
60 select HAVE_CC_STACKPROTECTOR
61 select CPU_PM if CPU_IDLE
62 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
63 select ARCH_BINFMT_ELF_STATE
64 select SYSCTL_EXCEPTION_TRACE
65 select HAVE_VIRT_CPU_ACCOUNTING_GEN
66 select HAVE_IRQ_TIME_ACCOUNTING
67 select GENERIC_TIME_VSYSCALL
68 select ARCH_CLOCKSOURCE_DATA
69 select HANDLE_DOMAIN_IRQ
70 select HAVE_EXIT_THREAD
71 select HAVE_REGS_AND_STACK_ACCESS_API
72 select HAVE_COPY_THREAD_TLS
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 GENERIC_HWEIGHT
1048 config GENERIC_CALIBRATE_DELAY
1052 config SCHED_OMIT_FRAME_POINTER
1057 # Select some configuration options automatically based on user selections.
1062 config ARCH_MAY_HAVE_PC_FDC
1098 config MIPS_CLOCK_VSYSCALL
1099 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1108 config ARCH_DMA_ADDR_T_64BIT
1109 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1111 config ARCH_SUPPORTS_UPROBES
1114 config DMA_MAYBE_COHERENT
1115 select DMA_NONCOHERENT
1118 config DMA_PERDEV_COHERENT
1120 select DMA_MAYBE_COHERENT
1125 config DMA_NONCOHERENT
1127 select NEED_DMA_MAP_STATE
1129 config NEED_DMA_MAP_STATE
1132 config SYS_HAS_EARLY_PRINTK
1135 config SYS_SUPPORTS_HOTPLUG_CPU
1138 config MIPS_BONITO64
1153 config NO_IOPORT_MAP
1159 config GENERIC_ISA_DMA
1161 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1164 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1166 select GENERIC_ISA_DMA
1171 config HOLES_IN_ZONE
1174 config SYS_SUPPORTS_RELOCATABLE
1177 Selected if the platform supports relocating the kernel.
1178 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1179 to allow access to command line and entropy sources.
1182 # Endianness selection. Sufficiently obscure so many users don't know what to
1183 # answer,so we try hard to limit the available choices. Also the use of a
1184 # choice statement should be more obvious to the user.
1187 prompt "Endianness selection"
1189 Some MIPS machines can be configured for either little or big endian
1190 byte order. These modes require different kernels and a different
1191 Linux distribution. In general there is one preferred byteorder for a
1192 particular system but some systems are just as commonly used in the
1193 one or the other endianness.
1195 config CPU_BIG_ENDIAN
1197 depends on SYS_SUPPORTS_BIG_ENDIAN
1199 config CPU_LITTLE_ENDIAN
1200 bool "Little endian"
1201 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1208 config SYS_SUPPORTS_APM_EMULATION
1211 config SYS_SUPPORTS_BIG_ENDIAN
1214 config SYS_SUPPORTS_LITTLE_ENDIAN
1217 config SYS_SUPPORTS_HUGETLBFS
1219 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1222 config MIPS_HUGE_TLB_SUPPORT
1223 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1240 config PCI_GT64XXX_PCI0
1243 config NO_EXCEPT_FILL
1250 select DMA_NONCOHERENT
1252 select SWAP_IO_SPACE
1253 select SYS_HAS_CPU_R5500
1254 select SYS_SUPPORTS_32BIT_KERNEL
1255 select SYS_SUPPORTS_64BIT_KERNEL
1256 select SYS_SUPPORTS_BIG_ENDIAN
1263 select DMA_NONCOHERENT
1264 select SYS_HAS_CPU_MIPS32_R2
1265 select SYS_SUPPORTS_32BIT_KERNEL
1266 select SYS_SUPPORTS_LITTLE_ENDIAN
1267 select SYS_SUPPORTS_BIG_ENDIAN
1268 select SYS_SUPPORTS_MIPS16
1269 select CPU_MIPSR2_IRQ_VI
1278 config SWAP_IO_SPACE
1281 config SGI_HAS_INDYDOG
1293 config SGI_HAS_ZILOG
1296 config SGI_HAS_I8042
1299 config DEFAULT_SGI_PARTITION
1311 config MIPS_L1_CACHE_SHIFT_4
1314 config MIPS_L1_CACHE_SHIFT_5
1317 config MIPS_L1_CACHE_SHIFT_6
1320 config MIPS_L1_CACHE_SHIFT_7
1323 config MIPS_L1_CACHE_SHIFT
1325 default "7" if MIPS_L1_CACHE_SHIFT_7
1326 default "6" if MIPS_L1_CACHE_SHIFT_6
1327 default "5" if MIPS_L1_CACHE_SHIFT_5
1328 default "4" if MIPS_L1_CACHE_SHIFT_4
1331 config HAVE_STD_PC_SERIAL_PORT
1335 bool "ARC console support"
1336 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1340 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1345 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1354 menu "CPU selection"
1360 config CPU_LOONGSON3
1361 bool "Loongson 3 CPU"
1362 depends on SYS_HAS_CPU_LOONGSON3
1363 select CPU_SUPPORTS_64BIT_KERNEL
1364 select CPU_SUPPORTS_HIGHMEM
1365 select CPU_SUPPORTS_HUGEPAGES
1366 select WEAK_ORDERING
1367 select WEAK_REORDERING_BEYOND_LLSC
1368 select MIPS_PGD_C0_CONTEXT
1369 select MIPS_L1_CACHE_SHIFT_6
1372 The Loongson 3 processor implements the MIPS64R2 instruction
1373 set with many extensions.
1375 config LOONGSON3_ENHANCEMENT
1376 bool "New Loongson 3 CPU Enhancements"
1379 select CPU_HAS_PREFETCH
1380 depends on CPU_LOONGSON3
1382 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1383 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1384 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1385 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1386 Fast TLB refill support, etc.
1388 This option enable those enhancements which are not probed at run
1389 time. If you want a generic kernel to run on all Loongson 3 machines,
1390 please say 'N' here. If you want a high-performance kernel to run on
1391 new Loongson 3 machines only, please say 'Y' here.
1393 config CPU_LOONGSON2E
1395 depends on SYS_HAS_CPU_LOONGSON2E
1396 select CPU_LOONGSON2
1398 The Loongson 2E processor implements the MIPS III instruction set
1399 with many extensions.
1401 It has an internal FPGA northbridge, which is compatible to
1404 config CPU_LOONGSON2F
1406 depends on SYS_HAS_CPU_LOONGSON2F
1407 select CPU_LOONGSON2
1410 The Loongson 2F processor implements the MIPS III instruction set
1411 with many extensions.
1413 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1414 have a similar programming interface with FPGA northbridge used in
1417 config CPU_LOONGSON1B
1419 depends on SYS_HAS_CPU_LOONGSON1B
1420 select CPU_LOONGSON1
1421 select LEDS_GPIO_REGISTER
1423 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1424 release 2 instruction set.
1426 config CPU_LOONGSON1C
1428 depends on SYS_HAS_CPU_LOONGSON1C
1429 select CPU_LOONGSON1
1430 select LEDS_GPIO_REGISTER
1432 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1433 release 2 instruction set.
1435 config CPU_MIPS32_R1
1436 bool "MIPS32 Release 1"
1437 depends on SYS_HAS_CPU_MIPS32_R1
1438 select CPU_HAS_PREFETCH
1439 select CPU_SUPPORTS_32BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1442 Choose this option to build a kernel for release 1 or later of the
1443 MIPS32 architecture. Most modern embedded systems with a 32-bit
1444 MIPS processor are based on a MIPS32 processor. If you know the
1445 specific type of processor in your system, choose those that one
1446 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1447 Release 2 of the MIPS32 architecture is available since several
1448 years so chances are you even have a MIPS32 Release 2 processor
1449 in which case you should choose CPU_MIPS32_R2 instead for better
1452 config CPU_MIPS32_R2
1453 bool "MIPS32 Release 2"
1454 depends on SYS_HAS_CPU_MIPS32_R2
1455 select CPU_HAS_PREFETCH
1456 select CPU_SUPPORTS_32BIT_KERNEL
1457 select CPU_SUPPORTS_HIGHMEM
1458 select CPU_SUPPORTS_MSA
1461 Choose this option to build a kernel for release 2 or later of the
1462 MIPS32 architecture. Most modern embedded systems with a 32-bit
1463 MIPS processor are based on a MIPS32 processor. If you know the
1464 specific type of processor in your system, choose those that one
1465 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1467 config CPU_MIPS32_R6
1468 bool "MIPS32 Release 6"
1469 depends on SYS_HAS_CPU_MIPS32_R6
1470 select CPU_HAS_PREFETCH
1471 select CPU_SUPPORTS_32BIT_KERNEL
1472 select CPU_SUPPORTS_HIGHMEM
1473 select CPU_SUPPORTS_MSA
1476 select MIPS_O32_FP64_SUPPORT
1478 Choose this option to build a kernel for release 6 or later of the
1479 MIPS32 architecture. New MIPS processors, starting with the Warrior
1480 family, are based on a MIPS32r6 processor. If you own an older
1481 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1483 config CPU_MIPS64_R1
1484 bool "MIPS64 Release 1"
1485 depends on SYS_HAS_CPU_MIPS64_R1
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_64BIT_KERNEL
1489 select CPU_SUPPORTS_HIGHMEM
1490 select CPU_SUPPORTS_HUGEPAGES
1492 Choose this option to build a kernel for release 1 or later of the
1493 MIPS64 architecture. Many modern embedded systems with a 64-bit
1494 MIPS processor are based on a MIPS64 processor. If you know the
1495 specific type of processor in your system, choose those that one
1496 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1497 Release 2 of the MIPS64 architecture is available since several
1498 years so chances are you even have a MIPS64 Release 2 processor
1499 in which case you should choose CPU_MIPS64_R2 instead for better
1502 config CPU_MIPS64_R2
1503 bool "MIPS64 Release 2"
1504 depends on SYS_HAS_CPU_MIPS64_R2
1505 select CPU_HAS_PREFETCH
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1509 select CPU_SUPPORTS_HUGEPAGES
1510 select CPU_SUPPORTS_MSA
1513 Choose this option to build a kernel for release 2 or later of the
1514 MIPS64 architecture. Many modern embedded systems with a 64-bit
1515 MIPS processor are based on a MIPS64 processor. If you know the
1516 specific type of processor in your system, choose those that one
1517 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1519 config CPU_MIPS64_R6
1520 bool "MIPS64 Release 6"
1521 depends on SYS_HAS_CPU_MIPS64_R6
1522 select CPU_HAS_PREFETCH
1523 select CPU_SUPPORTS_32BIT_KERNEL
1524 select CPU_SUPPORTS_64BIT_KERNEL
1525 select CPU_SUPPORTS_HIGHMEM
1526 select CPU_SUPPORTS_MSA
1528 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1531 Choose this option to build a kernel for release 6 or later of the
1532 MIPS64 architecture. New MIPS processors, starting with the Warrior
1533 family, are based on a MIPS64r6 processor. If you own an older
1534 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1538 depends on SYS_HAS_CPU_R3000
1540 select CPU_SUPPORTS_32BIT_KERNEL
1541 select CPU_SUPPORTS_HIGHMEM
1543 Please make sure to pick the right CPU type. Linux/MIPS is not
1544 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1545 *not* work on R4000 machines and vice versa. However, since most
1546 of the supported machines have an R4000 (or similar) CPU, R4x00
1547 might be a safe bet. If the resulting kernel does not work,
1548 try to recompile with R3000.
1552 depends on SYS_HAS_CPU_TX39XX
1553 select CPU_SUPPORTS_32BIT_KERNEL
1557 depends on SYS_HAS_CPU_VR41XX
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1561 The options selects support for the NEC VR4100 series of processors.
1562 Only choose this option if you have one of these processors as a
1563 kernel built with this option will not run on any other type of
1564 processor or vice versa.
1568 depends on SYS_HAS_CPU_R4300
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1572 MIPS Technologies R4300-series processors.
1576 depends on SYS_HAS_CPU_R4X00
1577 select CPU_SUPPORTS_32BIT_KERNEL
1578 select CPU_SUPPORTS_64BIT_KERNEL
1579 select CPU_SUPPORTS_HUGEPAGES
1581 MIPS Technologies R4000-series processors other than 4300, including
1582 the R4000, R4400, R4600, and 4700.
1586 depends on SYS_HAS_CPU_TX49XX
1587 select CPU_HAS_PREFETCH
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1594 depends on SYS_HAS_CPU_R5000
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1599 MIPS Technologies R5000-series processors other than the Nevada.
1603 depends on SYS_HAS_CPU_R5432
1604 select CPU_SUPPORTS_32BIT_KERNEL
1605 select CPU_SUPPORTS_64BIT_KERNEL
1606 select CPU_SUPPORTS_HUGEPAGES
1610 depends on SYS_HAS_CPU_R5500
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1615 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1620 depends on SYS_HAS_CPU_R6000
1621 select CPU_SUPPORTS_32BIT_KERNEL
1623 MIPS Technologies R6000 and R6000A series processors. Note these
1624 processors are extremely rare and the support for them is incomplete.
1628 depends on SYS_HAS_CPU_NEVADA
1629 select CPU_SUPPORTS_32BIT_KERNEL
1630 select CPU_SUPPORTS_64BIT_KERNEL
1631 select CPU_SUPPORTS_HUGEPAGES
1633 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1637 depends on SYS_HAS_CPU_R8000
1638 select CPU_HAS_PREFETCH
1639 select CPU_SUPPORTS_64BIT_KERNEL
1641 MIPS Technologies R8000 processors. Note these processors are
1642 uncommon and the support for them is incomplete.
1646 depends on SYS_HAS_CPU_R10000
1647 select CPU_HAS_PREFETCH
1648 select CPU_SUPPORTS_32BIT_KERNEL
1649 select CPU_SUPPORTS_64BIT_KERNEL
1650 select CPU_SUPPORTS_HIGHMEM
1651 select CPU_SUPPORTS_HUGEPAGES
1653 MIPS Technologies R10000-series processors.
1657 depends on SYS_HAS_CPU_RM7000
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
1666 depends on SYS_HAS_CPU_SB1
1667 select CPU_SUPPORTS_32BIT_KERNEL
1668 select CPU_SUPPORTS_64BIT_KERNEL
1669 select CPU_SUPPORTS_HIGHMEM
1670 select CPU_SUPPORTS_HUGEPAGES
1671 select WEAK_ORDERING
1673 config CPU_CAVIUM_OCTEON
1674 bool "Cavium Octeon processor"
1675 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1676 select CPU_HAS_PREFETCH
1677 select CPU_SUPPORTS_64BIT_KERNEL
1678 select WEAK_ORDERING
1679 select CPU_SUPPORTS_HIGHMEM
1680 select CPU_SUPPORTS_HUGEPAGES
1681 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1682 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1683 select MIPS_L1_CACHE_SHIFT_7
1686 The Cavium Octeon processor is a highly integrated chip containing
1687 many ethernet hardware widgets for networking tasks. The processor
1688 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1689 Full details can be found at http://www.caviumnetworks.com.
1692 bool "Broadcom BMIPS"
1693 depends on SYS_HAS_CPU_BMIPS
1695 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1696 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1697 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1698 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1699 select CPU_SUPPORTS_32BIT_KERNEL
1700 select DMA_NONCOHERENT
1702 select SWAP_IO_SPACE
1703 select WEAK_ORDERING
1704 select CPU_SUPPORTS_HIGHMEM
1705 select CPU_HAS_PREFETCH
1706 select CPU_SUPPORTS_CPUFREQ
1707 select MIPS_EXTERNAL_TIMER
1709 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1712 bool "Netlogic XLR SoC"
1713 depends on SYS_HAS_CPU_XLR
1714 select CPU_SUPPORTS_32BIT_KERNEL
1715 select CPU_SUPPORTS_64BIT_KERNEL
1716 select CPU_SUPPORTS_HIGHMEM
1717 select CPU_SUPPORTS_HUGEPAGES
1718 select WEAK_ORDERING
1719 select WEAK_REORDERING_BEYOND_LLSC
1721 Netlogic Microsystems XLR/XLS processors.
1724 bool "Netlogic XLP SoC"
1725 depends on SYS_HAS_CPU_XLP
1726 select CPU_SUPPORTS_32BIT_KERNEL
1727 select CPU_SUPPORTS_64BIT_KERNEL
1728 select CPU_SUPPORTS_HIGHMEM
1729 select WEAK_ORDERING
1730 select WEAK_REORDERING_BEYOND_LLSC
1731 select CPU_HAS_PREFETCH
1733 select CPU_SUPPORTS_HUGEPAGES
1734 select MIPS_ASID_BITS_VARIABLE
1736 Netlogic Microsystems XLP processors.
1739 config CPU_MIPS32_3_5_FEATURES
1740 bool "MIPS32 Release 3.5 Features"
1741 depends on SYS_HAS_CPU_MIPS32_R3_5
1742 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1744 Choose this option to build a kernel for release 2 or later of the
1745 MIPS32 architecture including features from the 3.5 release such as
1746 support for Enhanced Virtual Addressing (EVA).
1748 config CPU_MIPS32_3_5_EVA
1749 bool "Enhanced Virtual Addressing (EVA)"
1750 depends on CPU_MIPS32_3_5_FEATURES
1754 Choose this option if you want to enable the Enhanced Virtual
1755 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1756 One of its primary benefits is an increase in the maximum size
1757 of lowmem (up to 3GB). If unsure, say 'N' here.
1759 config CPU_MIPS32_R5_FEATURES
1760 bool "MIPS32 Release 5 Features"
1761 depends on SYS_HAS_CPU_MIPS32_R5
1762 depends on CPU_MIPS32_R2
1764 Choose this option to build a kernel for release 2 or later of the
1765 MIPS32 architecture including features from release 5 such as
1766 support for Extended Physical Addressing (XPA).
1768 config CPU_MIPS32_R5_XPA
1769 bool "Extended Physical Addressing (XPA)"
1770 depends on CPU_MIPS32_R5_FEATURES
1772 depends on !PAGE_SIZE_4KB
1773 depends on SYS_SUPPORTS_HIGHMEM
1776 select ARCH_PHYS_ADDR_T_64BIT
1779 Choose this option if you want to enable the Extended Physical
1780 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1781 benefit is to increase physical addressing equal to or greater
1782 than 40 bits. Note that this has the side effect of turning on
1783 64-bit addressing which in turn makes the PTEs 64-bit in size.
1784 If unsure, say 'N' here.
1787 config CPU_NOP_WORKAROUNDS
1790 config CPU_JUMP_WORKAROUNDS
1793 config CPU_LOONGSON2F_WORKAROUNDS
1794 bool "Loongson 2F Workarounds"
1796 select CPU_NOP_WORKAROUNDS
1797 select CPU_JUMP_WORKAROUNDS
1799 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1800 require workarounds. Without workarounds the system may hang
1801 unexpectedly. For more information please refer to the gas
1802 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1804 Loongson 2F03 and later have fixed these issues and no workarounds
1805 are needed. The workarounds have no significant side effect on them
1806 but may decrease the performance of the system so this option should
1807 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1810 If unsure, please say Y.
1811 endif # CPU_LOONGSON2F
1813 config SYS_SUPPORTS_ZBOOT
1815 select HAVE_KERNEL_GZIP
1816 select HAVE_KERNEL_BZIP2
1817 select HAVE_KERNEL_LZ4
1818 select HAVE_KERNEL_LZMA
1819 select HAVE_KERNEL_LZO
1820 select HAVE_KERNEL_XZ
1822 config SYS_SUPPORTS_ZBOOT_UART16550
1824 select SYS_SUPPORTS_ZBOOT
1826 config SYS_SUPPORTS_ZBOOT_UART_PROM
1828 select SYS_SUPPORTS_ZBOOT
1830 config CPU_LOONGSON2
1832 select CPU_SUPPORTS_32BIT_KERNEL
1833 select CPU_SUPPORTS_64BIT_KERNEL
1834 select CPU_SUPPORTS_HIGHMEM
1835 select CPU_SUPPORTS_HUGEPAGES
1837 config CPU_LOONGSON1
1841 select CPU_HAS_PREFETCH
1842 select CPU_SUPPORTS_32BIT_KERNEL
1843 select CPU_SUPPORTS_HIGHMEM
1844 select CPU_SUPPORTS_CPUFREQ
1846 config CPU_BMIPS32_3300
1847 select SMP_UP if SMP
1850 config CPU_BMIPS4350
1852 select SYS_SUPPORTS_SMP
1853 select SYS_SUPPORTS_HOTPLUG_CPU
1855 config CPU_BMIPS4380
1857 select MIPS_L1_CACHE_SHIFT_6
1858 select SYS_SUPPORTS_SMP
1859 select SYS_SUPPORTS_HOTPLUG_CPU
1862 config CPU_BMIPS5000
1864 select MIPS_CPU_SCACHE
1865 select MIPS_L1_CACHE_SHIFT_7
1866 select SYS_SUPPORTS_SMP
1867 select SYS_SUPPORTS_HOTPLUG_CPU
1870 config SYS_HAS_CPU_LOONGSON3
1872 select CPU_SUPPORTS_CPUFREQ
1875 config SYS_HAS_CPU_LOONGSON2E
1878 config SYS_HAS_CPU_LOONGSON2F
1880 select CPU_SUPPORTS_CPUFREQ
1881 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1882 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1884 config SYS_HAS_CPU_LOONGSON1B
1887 config SYS_HAS_CPU_LOONGSON1C
1890 config SYS_HAS_CPU_MIPS32_R1
1893 config SYS_HAS_CPU_MIPS32_R2
1896 config SYS_HAS_CPU_MIPS32_R3_5
1899 config SYS_HAS_CPU_MIPS32_R5
1902 config SYS_HAS_CPU_MIPS32_R6
1905 config SYS_HAS_CPU_MIPS64_R1
1908 config SYS_HAS_CPU_MIPS64_R2
1911 config SYS_HAS_CPU_MIPS64_R6
1914 config SYS_HAS_CPU_R3000
1917 config SYS_HAS_CPU_TX39XX
1920 config SYS_HAS_CPU_VR41XX
1923 config SYS_HAS_CPU_R4300
1926 config SYS_HAS_CPU_R4X00
1929 config SYS_HAS_CPU_TX49XX
1932 config SYS_HAS_CPU_R5000
1935 config SYS_HAS_CPU_R5432
1938 config SYS_HAS_CPU_R5500
1941 config SYS_HAS_CPU_R6000
1944 config SYS_HAS_CPU_NEVADA
1947 config SYS_HAS_CPU_R8000
1950 config SYS_HAS_CPU_R10000
1953 config SYS_HAS_CPU_RM7000
1956 config SYS_HAS_CPU_SB1
1959 config SYS_HAS_CPU_CAVIUM_OCTEON
1962 config SYS_HAS_CPU_BMIPS
1965 config SYS_HAS_CPU_BMIPS32_3300
1967 select SYS_HAS_CPU_BMIPS
1969 config SYS_HAS_CPU_BMIPS4350
1971 select SYS_HAS_CPU_BMIPS
1973 config SYS_HAS_CPU_BMIPS4380
1975 select SYS_HAS_CPU_BMIPS
1977 config SYS_HAS_CPU_BMIPS5000
1979 select SYS_HAS_CPU_BMIPS
1981 config SYS_HAS_CPU_XLR
1984 config SYS_HAS_CPU_XLP
1987 config MIPS_MALTA_PM
1988 depends on MIPS_MALTA
1994 # CPU may reorder R->R, R->W, W->R, W->W
1995 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1997 config WEAK_ORDERING
2001 # CPU may reorder reads and writes beyond LL/SC
2002 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2004 config WEAK_REORDERING_BEYOND_LLSC
2009 # These two indicate any level of the MIPS32 and MIPS64 architecture
2013 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2017 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2020 # These two indicate the revision of the architecture, either Release 1 or Release 2
2024 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2028 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2034 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2036 select HAVE_ARCH_BITREVERSE
2037 select MIPS_ASID_BITS_VARIABLE
2046 config SYS_SUPPORTS_32BIT_KERNEL
2048 config SYS_SUPPORTS_64BIT_KERNEL
2050 config CPU_SUPPORTS_32BIT_KERNEL
2052 config CPU_SUPPORTS_64BIT_KERNEL
2054 config CPU_SUPPORTS_CPUFREQ
2056 config CPU_SUPPORTS_ADDRWINCFG
2058 config CPU_SUPPORTS_HUGEPAGES
2060 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2062 config MIPS_PGD_C0_CONTEXT
2064 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2067 # Set to y for ptrace access to watch registers.
2069 config HARDWARE_WATCHPOINTS
2071 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2076 prompt "Kernel code model"
2078 You should only select this option if you have a workload that
2079 actually benefits from 64-bit processing or if your machine has
2080 large memory. You will only be presented a single option in this
2081 menu if your system does not support both 32-bit and 64-bit kernels.
2084 bool "32-bit kernel"
2085 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2088 Select this option if you want to build a 32-bit kernel.
2091 bool "64-bit kernel"
2092 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2094 Select this option if you want to build a 64-bit kernel.
2099 bool "KVM Guest Kernel"
2100 depends on BROKEN_ON_SMP
2102 Select this option if building a guest kernel for KVM (Trap & Emulate)
2105 config KVM_GUEST_TIMER_FREQ
2106 int "Count/Compare Timer Frequency (MHz)"
2107 depends on KVM_GUEST
2110 Set this to non-zero if building a guest kernel for KVM to skip RTC
2111 emulation when determining guest CPU Frequency. Instead, the guest's
2112 timer frequency is specified directly.
2114 config MIPS_VA_BITS_48
2115 bool "48 bits virtual memory"
2118 Support a maximum at least 48 bits of application virtual
2119 memory. Default is 40 bits or less, depending on the CPU.
2120 For page sizes 16k and above, this option results in a small
2121 memory overhead for page tables. For 4k page size, a fourth
2122 level of page tables is added which imposes both a memory
2123 overhead as well as slower TLB fault handling.
2128 prompt "Kernel page size"
2129 default PAGE_SIZE_4KB
2131 config PAGE_SIZE_4KB
2133 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2135 This option select the standard 4kB Linux page size. On some
2136 R3000-family processors this is the only available page size. Using
2137 4kB page size will minimize memory consumption and is therefore
2138 recommended for low memory systems.
2140 config PAGE_SIZE_8KB
2142 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2143 depends on !MIPS_VA_BITS_48
2145 Using 8kB page size will result in higher performance kernel at
2146 the price of higher memory consumption. This option is available
2147 only on R8000 and cnMIPS processors. Note that you will need a
2148 suitable Linux distribution to support this.
2150 config PAGE_SIZE_16KB
2152 depends on !CPU_R3000 && !CPU_TX39XX
2154 Using 16kB page size will result in higher performance kernel at
2155 the price of higher memory consumption. This option is available on
2156 all non-R3000 family processors. Note that you will need a suitable
2157 Linux distribution to support this.
2159 config PAGE_SIZE_32KB
2161 depends on CPU_CAVIUM_OCTEON
2162 depends on !MIPS_VA_BITS_48
2164 Using 32kB page size will result in higher performance kernel at
2165 the price of higher memory consumption. This option is available
2166 only on cnMIPS cores. Note that you will need a suitable Linux
2167 distribution to support this.
2169 config PAGE_SIZE_64KB
2171 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2173 Using 64kB page size will result in higher performance kernel at
2174 the price of higher memory consumption. This option is available on
2175 all non-R3000 family processor. Not that at the time of this
2176 writing this option is still high experimental.
2180 config FORCE_MAX_ZONEORDER
2181 int "Maximum zone order"
2182 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2183 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2184 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2185 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2186 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2187 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2191 The kernel memory allocator divides physically contiguous memory
2192 blocks into "zones", where each zone is a power of two number of
2193 pages. This option selects the largest power of two that the kernel
2194 keeps in the memory allocator. If you need to allocate very large
2195 blocks of physically contiguous memory, then you may need to
2196 increase this value.
2198 This config option is actually maximum order plus one. For example,
2199 a value of 11 means that the largest free memory block is 2^10 pages.
2201 The page size is not necessarily 4KB. Keep this in mind
2202 when choosing a value for this option.
2207 config IP22_CPU_SCACHE
2212 # Support for a MIPS32 / MIPS64 style S-caches
2214 config MIPS_CPU_SCACHE
2218 config R5000_CPU_SCACHE
2222 config RM7000_CPU_SCACHE
2226 config SIBYTE_DMA_PAGEOPS
2227 bool "Use DMA to clear/copy pages"
2230 Instead of using the CPU to zero and copy pages, use a Data Mover
2231 channel. These DMA channels are otherwise unused by the standard
2232 SiByte Linux port. Seems to give a small performance benefit.
2234 config CPU_HAS_PREFETCH
2237 config CPU_GENERIC_DUMP_TLB
2239 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2243 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2245 config CPU_R4K_CACHE_TLB
2247 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2250 bool "MIPS MT SMP support (1 TC on each available VPE)"
2251 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2252 select CPU_MIPSR2_IRQ_VI
2253 select CPU_MIPSR2_IRQ_EI
2258 select SYS_SUPPORTS_SMP
2259 select SYS_SUPPORTS_SCHED_SMT
2260 select MIPS_PERF_SHARED_TC_COUNTERS
2262 This is a kernel model which is known as SMVP. This is supported
2263 on cores with the MT ASE and uses the available VPEs to implement
2264 virtual processors which supports SMP. This is equivalent to the
2265 Intel Hyperthreading feature. For further information go to
2266 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2272 bool "SMT (multithreading) scheduler support"
2273 depends on SYS_SUPPORTS_SCHED_SMT
2276 SMT scheduler support improves the CPU scheduler's decision making
2277 when dealing with MIPS MT enabled cores at a cost of slightly
2278 increased overhead in some places. If unsure say N here.
2280 config SYS_SUPPORTS_SCHED_SMT
2283 config SYS_SUPPORTS_MULTITHREADING
2286 config MIPS_MT_FPAFF
2287 bool "Dynamic FPU affinity for FP-intensive threads"
2289 depends on MIPS_MT_SMP
2291 config MIPSR2_TO_R6_EMULATOR
2292 bool "MIPS R2-to-R6 emulator"
2293 depends on CPU_MIPSR6
2296 Choose this option if you want to run non-R6 MIPS userland code.
2297 Even if you say 'Y' here, the emulator will still be disabled by
2298 default. You can enable it using the 'mipsr2emu' kernel option.
2299 The only reason this is a build-time option is to save ~14K from the
2302 config MIPS_VPE_LOADER
2303 bool "VPE loader support."
2304 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2305 select CPU_MIPSR2_IRQ_VI
2306 select CPU_MIPSR2_IRQ_EI
2309 Includes a loader for loading an elf relocatable object
2310 onto another VPE and running it.
2312 config MIPS_VPE_LOADER_CMP
2315 depends on MIPS_VPE_LOADER && MIPS_CMP
2317 config MIPS_VPE_LOADER_MT
2320 depends on MIPS_VPE_LOADER && !MIPS_CMP
2322 config MIPS_VPE_LOADER_TOM
2323 bool "Load VPE program into memory hidden from linux"
2324 depends on MIPS_VPE_LOADER
2327 The loader can use memory that is present but has been hidden from
2328 Linux using the kernel command line option "mem=xxMB". It's up to
2329 you to ensure the amount you put in the option and the space your
2330 program requires is less or equal to the amount physically present.
2332 config MIPS_VPE_APSP_API
2333 bool "Enable support for AP/SP API (RTLX)"
2334 depends on MIPS_VPE_LOADER
2337 config MIPS_VPE_APSP_API_CMP
2340 depends on MIPS_VPE_APSP_API && MIPS_CMP
2342 config MIPS_VPE_APSP_API_MT
2345 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2348 bool "MIPS CMP framework support (DEPRECATED)"
2349 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2352 select SYS_SUPPORTS_SMP
2353 select WEAK_ORDERING
2356 Select this if you are using a bootloader which implements the "CMP
2357 framework" protocol (ie. YAMON) and want your kernel to make use of
2358 its ability to start secondary CPUs.
2360 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2364 bool "MIPS Coherent Processing System support"
2365 depends on SYS_SUPPORTS_MIPS_CPS
2368 select MIPS_CPS_PM if HOTPLUG_CPU
2370 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2371 select SYS_SUPPORTS_HOTPLUG_CPU
2372 select SYS_SUPPORTS_SMP
2373 select WEAK_ORDERING
2375 Select this if you wish to run an SMP kernel across multiple cores
2376 within a MIPS Coherent Processing System. When this option is
2377 enabled the kernel will probe for other cores and boot them with
2378 no external assistance. It is safe to enable this when hardware
2379 support is unavailable.
2392 config SB1_PASS_2_WORKAROUNDS
2394 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2397 config SB1_PASS_2_1_WORKAROUNDS
2399 depends on CPU_SB1 && CPU_SB1_PASS_2
2403 config ARCH_PHYS_ADDR_T_64BIT
2407 prompt "SmartMIPS or microMIPS ASE support"
2409 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2412 Select this if you want neither microMIPS nor SmartMIPS support
2414 config CPU_HAS_SMARTMIPS
2415 depends on SYS_SUPPORTS_SMARTMIPS
2418 SmartMIPS is a extension of the MIPS32 architecture aimed at
2419 increased security at both hardware and software level for
2420 smartcards. Enabling this option will allow proper use of the
2421 SmartMIPS instructions by Linux applications. However a kernel with
2422 this option will not work on a MIPS core without SmartMIPS core. If
2423 you don't know you probably don't have SmartMIPS and should say N
2426 config CPU_MICROMIPS
2427 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2430 When this option is enabled the kernel will be built using the
2436 bool "Support for the MIPS SIMD Architecture"
2437 depends on CPU_SUPPORTS_MSA
2438 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2440 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2441 and a set of SIMD instructions to operate on them. When this option
2442 is enabled the kernel will support allocating & switching MSA
2443 vector register contexts. If you know that your kernel will only be
2444 running on CPUs which do not support MSA or that your userland will
2445 not be making use of it then you may wish to say N here to reduce
2446 the size & complexity of your kernel.
2460 # Vectored interrupt mode is an R2 feature
2462 config CPU_MIPSR2_IRQ_VI
2466 # Extended interrupt mode is an R2 feature
2468 config CPU_MIPSR2_IRQ_EI
2473 depends on !CPU_R3000
2479 config CPU_DADDI_WORKAROUNDS
2482 config CPU_R4000_WORKAROUNDS
2484 select CPU_R4400_WORKAROUNDS
2486 config CPU_R4400_WORKAROUNDS
2489 config MIPS_ASID_SHIFT
2491 default 6 if CPU_R3000 || CPU_TX39XX
2492 default 4 if CPU_R8000
2495 config MIPS_ASID_BITS
2497 default 0 if MIPS_ASID_BITS_VARIABLE
2498 default 6 if CPU_R3000 || CPU_TX39XX
2501 config MIPS_ASID_BITS_VARIABLE
2505 # - Highmem only makes sense for the 32-bit kernel.
2506 # - The current highmem code will only work properly on physically indexed
2507 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2508 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2509 # moment we protect the user and offer the highmem option only on machines
2510 # where it's known to be safe. This will not offer highmem on a few systems
2511 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2512 # indexed CPUs but we're playing safe.
2513 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2514 # know they might have memory configurations that could make use of highmem
2518 bool "High Memory Support"
2519 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2521 config CPU_SUPPORTS_HIGHMEM
2524 config SYS_SUPPORTS_HIGHMEM
2527 config SYS_SUPPORTS_SMARTMIPS
2530 config SYS_SUPPORTS_MICROMIPS
2533 config SYS_SUPPORTS_MIPS16
2536 This option must be set if a kernel might be executed on a MIPS16-
2537 enabled CPU even if MIPS16 is not actually being used. In other
2538 words, it makes the kernel MIPS16-tolerant.
2540 config CPU_SUPPORTS_MSA
2543 config ARCH_FLATMEM_ENABLE
2545 depends on !NUMA && !CPU_LOONGSON2
2547 config ARCH_DISCONTIGMEM_ENABLE
2549 default y if SGI_IP27
2551 Say Y to support efficient handling of discontiguous physical memory,
2552 for architectures which are either NUMA (Non-Uniform Memory Access)
2553 or have huge holes in the physical address space for other reasons.
2554 See <file:Documentation/vm/numa> for more.
2556 config ARCH_SPARSEMEM_ENABLE
2558 select SPARSEMEM_STATIC
2562 depends on SYS_SUPPORTS_NUMA
2564 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2565 Access). This option improves performance on systems with more
2566 than two nodes; on two node systems it is generally better to
2567 leave it disabled; on single node systems disable this option
2570 config SYS_SUPPORTS_NUMA
2574 bool "Relocatable kernel"
2575 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2577 This builds a kernel image that retains relocation information
2578 so it can be loaded someplace besides the default 1MB.
2579 The relocations make the kernel binary about 15% larger,
2580 but are discarded at runtime
2582 config RELOCATION_TABLE_SIZE
2583 hex "Relocation table size"
2584 depends on RELOCATABLE
2585 range 0x0 0x01000000
2586 default "0x00100000"
2588 A table of relocation data will be appended to the kernel binary
2589 and parsed at boot to fix up the relocated kernel.
2591 This option allows the amount of space reserved for the table to be
2592 adjusted, although the default of 1Mb should be ok in most cases.
2594 The build will fail and a valid size suggested if this is too small.
2596 If unsure, leave at the default value.
2598 config RANDOMIZE_BASE
2599 bool "Randomize the address of the kernel image"
2600 depends on RELOCATABLE
2602 Randomizes the physical and virtual address at which the
2603 kernel image is loaded, as a security feature that
2604 deters exploit attempts relying on knowledge of the location
2605 of kernel internals.
2607 Entropy is generated using any coprocessor 0 registers available.
2609 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2613 config RANDOMIZE_BASE_MAX_OFFSET
2614 hex "Maximum kASLR offset" if EXPERT
2615 depends on RANDOMIZE_BASE
2616 range 0x0 0x40000000 if EVA || 64BIT
2617 range 0x0 0x08000000
2618 default "0x01000000"
2620 When kASLR is active, this provides the maximum offset that will
2621 be applied to the kernel image. It should be set according to the
2622 amount of physical RAM available in the target system minus
2623 PHYSICAL_START and must be a power of 2.
2625 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2626 EVA or 64-bit. The default is 16Mb.
2631 depends on NEED_MULTIPLE_NODES
2633 config HW_PERF_EVENTS
2634 bool "Enable hardware performance counter support for perf events"
2635 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2638 Enable hardware performance counter support for perf events. If
2639 disabled, perf events will use software events only.
2644 bool "Multi-Processing support"
2645 depends on SYS_SUPPORTS_SMP
2647 This enables support for systems with more than one CPU. If you have
2648 a system with only one CPU, say N. If you have a system with more
2649 than one CPU, say Y.
2651 If you say N here, the kernel will run on uni- and multiprocessor
2652 machines, but will use only one CPU of a multiprocessor machine. If
2653 you say Y here, the kernel will run on many, but not all,
2654 uniprocessor machines. On a uniprocessor machine, the kernel
2655 will run faster if you say N here.
2657 People using multiprocessor machines who say Y here should also say
2658 Y to "Enhanced Real Time Clock Support", below.
2660 See also the SMP-HOWTO available at
2661 <http://www.tldp.org/docs.html#howto>.
2663 If you don't know what to do here, say N.
2666 bool "Support for hot-pluggable CPUs"
2667 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2669 Say Y here to allow turning CPUs off and on. CPUs can be
2670 controlled through /sys/devices/system/cpu.
2671 (Note: power management support will enable this option
2672 automatically on SMP systems. )
2673 Say N if you want to disable CPU hotplug.
2678 config SYS_SUPPORTS_MIPS_CMP
2681 config SYS_SUPPORTS_MIPS_CPS
2684 config SYS_SUPPORTS_SMP
2687 config NR_CPUS_DEFAULT_4
2690 config NR_CPUS_DEFAULT_8
2693 config NR_CPUS_DEFAULT_16
2696 config NR_CPUS_DEFAULT_32
2699 config NR_CPUS_DEFAULT_64
2703 int "Maximum number of CPUs (2-256)"
2706 default "4" if NR_CPUS_DEFAULT_4
2707 default "8" if NR_CPUS_DEFAULT_8
2708 default "16" if NR_CPUS_DEFAULT_16
2709 default "32" if NR_CPUS_DEFAULT_32
2710 default "64" if NR_CPUS_DEFAULT_64
2712 This allows you to specify the maximum number of CPUs which this
2713 kernel will support. The maximum supported value is 32 for 32-bit
2714 kernel and 64 for 64-bit kernels; the minimum value which makes
2715 sense is 1 for Qemu (useful only for kernel debugging purposes)
2716 and 2 for all others.
2718 This is purely to save memory - each supported CPU adds
2719 approximately eight kilobytes to the kernel image. For best
2720 performance should round up your number of processors to the next
2723 config MIPS_PERF_SHARED_TC_COUNTERS
2727 # Timer Interrupt Frequency Configuration
2731 prompt "Timer frequency"
2734 Allows the configuration of the timer frequency.
2737 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2740 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2743 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2746 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2762 config SYS_SUPPORTS_24HZ
2765 config SYS_SUPPORTS_48HZ
2768 config SYS_SUPPORTS_100HZ
2771 config SYS_SUPPORTS_128HZ
2774 config SYS_SUPPORTS_250HZ
2777 config SYS_SUPPORTS_256HZ
2780 config SYS_SUPPORTS_1000HZ
2783 config SYS_SUPPORTS_1024HZ
2786 config SYS_SUPPORTS_ARBIT_HZ
2788 default y if !SYS_SUPPORTS_24HZ && \
2789 !SYS_SUPPORTS_48HZ && \
2790 !SYS_SUPPORTS_100HZ && \
2791 !SYS_SUPPORTS_128HZ && \
2792 !SYS_SUPPORTS_250HZ && \
2793 !SYS_SUPPORTS_256HZ && \
2794 !SYS_SUPPORTS_1000HZ && \
2795 !SYS_SUPPORTS_1024HZ
2801 default 100 if HZ_100
2802 default 128 if HZ_128
2803 default 250 if HZ_250
2804 default 256 if HZ_256
2805 default 1000 if HZ_1000
2806 default 1024 if HZ_1024
2809 def_bool HIGH_RES_TIMERS
2811 source "kernel/Kconfig.preempt"
2814 bool "Kexec system call"
2817 kexec is a system call that implements the ability to shutdown your
2818 current kernel, and to start another kernel. It is like a reboot
2819 but it is independent of the system firmware. And like a reboot
2820 you can start any kernel with it, not just Linux.
2822 The name comes from the similarity to the exec system call.
2824 It is an ongoing process to be certain the hardware in a machine
2825 is properly shutdown, so do not be surprised if this code does not
2826 initially work for you. As of this writing the exact hardware
2827 interface is strongly in flux, so no good recommendation can be
2831 bool "Kernel crash dumps"
2833 Generate crash dump after being started by kexec.
2834 This should be normally only set in special crash dump kernels
2835 which are loaded in the main kernel with kexec-tools into
2836 a specially reserved region and then later executed after
2837 a crash by kdump/kexec. The crash dump kernel must be compiled
2838 to a memory address not used by the main kernel or firmware using
2841 config PHYSICAL_START
2842 hex "Physical address where the kernel is loaded"
2843 default "0xffffffff84000000" if 64BIT
2844 default "0x84000000" if 32BIT
2845 depends on CRASH_DUMP
2847 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2848 If you plan to use kernel for capturing the crash dump change
2849 this value to start of the reserved region (the "X" value as
2850 specified in the "crashkernel=YM@XM" command line boot parameter
2851 passed to the panic-ed kernel).
2854 bool "Enable seccomp to safely compute untrusted bytecode"
2858 This kernel feature is useful for number crunching applications
2859 that may need to compute untrusted bytecode during their
2860 execution. By using pipes or other transports made available to
2861 the process as file descriptors supporting the read/write
2862 syscalls, it's possible to isolate those applications in
2863 their own address space using seccomp. Once seccomp is
2864 enabled via /proc/<pid>/seccomp, it cannot be disabled
2865 and the task is only allowed to execute a few safe syscalls
2866 defined by each seccomp mode.
2868 If unsure, say Y. Only embedded should say N here.
2870 config MIPS_O32_FP64_SUPPORT
2871 bool "Support for O32 binaries using 64-bit FP"
2872 depends on 32BIT || MIPS32_O32
2874 When this is enabled, the kernel will support use of 64-bit floating
2875 point registers with binaries using the O32 ABI along with the
2876 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2877 32-bit MIPS systems this support is at the cost of increasing the
2878 size and complexity of the compiled FPU emulator. Thus if you are
2879 running a MIPS32 system and know that none of your userland binaries
2880 will require 64-bit floating point, you may wish to reduce the size
2881 of your kernel & potentially improve FP emulation performance by
2884 Although binutils currently supports use of this flag the details
2885 concerning its effect upon the O32 ABI in userland are still being
2886 worked on. In order to avoid userland becoming dependant upon current
2887 behaviour before the details have been finalised, this option should
2888 be considered experimental and only enabled by those working upon
2896 select OF_EARLY_FLATTREE
2903 prompt "Kernel appended dtb support" if USE_OF
2904 default MIPS_NO_APPENDED_DTB
2906 config MIPS_NO_APPENDED_DTB
2909 Do not enable appended dtb support.
2911 config MIPS_ELF_APPENDED_DTB
2914 With this option, the boot code will look for a device tree binary
2915 DTB) included in the vmlinux ELF section .appended_dtb. By default
2916 it is empty and the DTB can be appended using binutils command
2919 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2921 This is meant as a backward compatiblity convenience for those
2922 systems with a bootloader that can't be upgraded to accommodate
2923 the documented boot protocol using a device tree.
2925 config MIPS_RAW_APPENDED_DTB
2926 bool "vmlinux.bin or vmlinuz.bin"
2928 With this option, the boot code will look for a device tree binary
2929 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2930 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2932 This is meant as a backward compatibility convenience for those
2933 systems with a bootloader that can't be upgraded to accommodate
2934 the documented boot protocol using a device tree.
2936 Beware that there is very little in terms of protection against
2937 this option being confused by leftover garbage in memory that might
2938 look like a DTB header after a reboot if no actual DTB is appended
2939 to vmlinux.bin. Do not leave this option active in a production kernel
2940 if you don't intend to always append a DTB.
2944 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2945 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2948 default MIPS_CMDLINE_FROM_BOOTLOADER
2950 config MIPS_CMDLINE_FROM_DTB
2952 bool "Dtb kernel arguments if available"
2954 config MIPS_CMDLINE_DTB_EXTEND
2956 bool "Extend dtb kernel arguments with bootloader arguments"
2958 config MIPS_CMDLINE_FROM_BOOTLOADER
2959 bool "Bootloader kernel arguments if available"
2961 config MIPS_CMDLINE_BUILTIN_EXTEND
2962 depends on CMDLINE_BOOL
2963 bool "Extend builtin kernel arguments with bootloader arguments"
2968 config LOCKDEP_SUPPORT
2972 config STACKTRACE_SUPPORT
2976 config HAVE_LATENCYTOP_SUPPORT
2980 config PGTABLE_LEVELS
2982 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2983 default 3 if 64BIT && !PAGE_SIZE_64KB
2986 source "init/Kconfig"
2988 source "kernel/Kconfig.freezer"
2990 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2998 bool "Support for PCI controller"
2999 depends on HW_HAS_PCI
3002 Find out whether you have a PCI motherboard. PCI is the name of a
3003 bus system, i.e. the way the CPU talks to the other stuff inside
3004 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3008 bool "Support for HT-linked PCI"
3010 depends on CPU_LOONGSON3
3014 Loongson family machines use Hyper-Transport bus for inter-core
3015 connection and device connection. The PCI bus is a subordinate
3016 linked at HT. Choose Y for Loongson-3 based machines.
3021 config PCI_DOMAINS_GENERIC
3024 config PCI_DRIVERS_GENERIC
3025 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3028 config PCI_DRIVERS_LEGACY
3029 def_bool !PCI_DRIVERS_GENERIC
3030 select NO_GENERIC_PCI_IOPORT_MAP
3032 source "drivers/pci/Kconfig"
3035 # ISA support is now enabled via select. Too many systems still have the one
3036 # or other ISA chip on the board that users don't know about so don't expect
3037 # users to choose the right thing ...
3044 depends on HW_HAS_EISA
3046 select GENERIC_ISA_DMA
3048 The Extended Industry Standard Architecture (EISA) bus was
3049 developed as an open alternative to the IBM MicroChannel bus.
3051 The EISA bus provided some of the features of the IBM MicroChannel
3052 bus while maintaining backward compatibility with cards made for
3053 the older ISA bus. The EISA bus saw limited use between 1988 and
3054 1995 when it was made obsolete by the PCI bus.
3056 Say Y here if you are building a kernel for an EISA-based machine.
3060 source "drivers/eisa/Kconfig"
3063 bool "TURBOchannel support"
3064 depends on MACH_DECSTATION
3066 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3067 processors. TURBOchannel programming specifications are available
3069 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3071 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3072 Linux driver support status is documented at:
3073 <http://www.linux-mips.org/wiki/DECstation>
3079 config ARCH_MMAP_RND_BITS_MIN
3083 config ARCH_MMAP_RND_BITS_MAX
3087 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3090 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3097 select MIPS_EXTERNAL_TIMER
3105 source "drivers/pcmcia/Kconfig"
3108 tristate "RapidIO support"
3112 If you say Y here, the kernel will include drivers and
3113 infrastructure code to support RapidIO interconnect devices.
3115 source "drivers/rapidio/Kconfig"
3119 menu "Executable file formats"
3121 source "fs/Kconfig.binfmt"
3126 config MIPS32_COMPAT
3132 config SYSVIPC_COMPAT
3136 bool "Kernel support for o32 binaries"
3138 select ARCH_WANT_OLD_COMPAT_IPC
3140 select MIPS32_COMPAT
3141 select SYSVIPC_COMPAT if SYSVIPC
3143 Select this option if you want to run o32 binaries. These are pure
3144 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3145 existing binaries are in this format.
3150 bool "Kernel support for n32 binaries"
3153 select MIPS32_COMPAT
3154 select SYSVIPC_COMPAT if SYSVIPC
3156 Select this option if you want to run n32 binaries. These are
3157 64-bit binaries using 32-bit quantities for addressing and certain
3158 data that would normally be 64-bit. They are used in special
3165 default y if MIPS32_O32 || MIPS32_N32
3170 menu "Power management options"
3172 config ARCH_HIBERNATION_POSSIBLE
3174 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3176 config ARCH_SUSPEND_POSSIBLE
3178 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3180 source "kernel/power/Kconfig"
3184 config MIPS_EXTERNAL_TIMER
3187 menu "CPU Power Management"
3189 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3190 source "drivers/cpufreq/Kconfig"
3193 source "drivers/cpuidle/Kconfig"
3197 source "net/Kconfig"
3199 source "drivers/Kconfig"
3201 source "drivers/firmware/Kconfig"
3205 source "arch/mips/Kconfig.debug"
3207 source "security/Kconfig"
3209 source "crypto/Kconfig"
3211 source "lib/Kconfig"
3213 source "arch/mips/kvm/Kconfig"