1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_MIGHT_HAVE_PC_PARPORT
11 select ARCH_MIGHT_HAVE_PC_SERIO
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_PCI_IOMAP
28 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
29 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_TIME_VSYSCALL
31 select HANDLE_DOMAIN_IRQ
32 select HAVE_ARCH_COMPILER_H
33 select HAVE_ARCH_JUMP_LABEL
35 select HAVE_ARCH_MMAP_RND_BITS if MMU
36 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
37 select HAVE_ARCH_SECCOMP_FILTER
38 select HAVE_ARCH_TRACEHOOK
39 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
40 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
41 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
42 select HAVE_CC_STACKPROTECTOR
43 select HAVE_CONTEXT_TRACKING
44 select HAVE_COPY_THREAD_TLS
45 select HAVE_C_RECORDMCOUNT
46 select HAVE_DEBUG_KMEMLEAK
47 select HAVE_DEBUG_STACKOVERFLOW
48 select HAVE_DMA_API_DEBUG
49 select HAVE_DMA_CONTIGUOUS
50 select HAVE_DYNAMIC_FTRACE
51 select HAVE_EXIT_THREAD
52 select HAVE_FTRACE_MCOUNT_RECORD
53 select HAVE_FUNCTION_GRAPH_TRACER
54 select HAVE_FUNCTION_TRACER
55 select HAVE_GENERIC_DMA_COHERENT
57 select HAVE_IRQ_EXIT_ON_IRQ_STACK
58 select HAVE_IRQ_TIME_ACCOUNTING
60 select HAVE_KRETPROBES
62 select HAVE_MEMBLOCK_NODE_MAP
63 select HAVE_MOD_ARCH_SPECIFIC
66 select HAVE_PERF_EVENTS
67 select HAVE_REGS_AND_STACK_ACCESS_API
68 select HAVE_SYSCALL_TRACEPOINTS
69 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
70 select IRQ_FORCED_THREADING
71 select MODULES_USE_ELF_RELA if MODULES && 64BIT
72 select MODULES_USE_ELF_REL if MODULES
73 select PERF_USE_VMALLOC
74 select RTC_LIB if !MACH_LOONGSON64
75 select SYSCTL_EXCEPTION_TRACE
78 menu "Machine selection"
85 bool "Generic board-agnostic MIPS kernel"
89 select CLKSRC_MIPS_GIC
91 select CPU_MIPSR2_IRQ_VI
92 select CPU_MIPSR2_IRQ_EI
94 select DMA_PERDEV_COHERENT
98 select MIPS_CPU_SCACHE
100 select MIPS_L1_CACHE_SHIFT_7
101 select NO_EXCEPT_FILL
102 select PCI_DRIVERS_GENERIC
106 select SYS_HAS_CPU_MIPS32_R1
107 select SYS_HAS_CPU_MIPS32_R2
108 select SYS_HAS_CPU_MIPS32_R6
109 select SYS_HAS_CPU_MIPS64_R1
110 select SYS_HAS_CPU_MIPS64_R2
111 select SYS_HAS_CPU_MIPS64_R6
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_64BIT_KERNEL
114 select SYS_SUPPORTS_BIG_ENDIAN
115 select SYS_SUPPORTS_HIGHMEM
116 select SYS_SUPPORTS_LITTLE_ENDIAN
117 select SYS_SUPPORTS_MICROMIPS
118 select SYS_SUPPORTS_MIPS_CPS
119 select SYS_SUPPORTS_MIPS16
120 select SYS_SUPPORTS_MULTITHREADING
121 select SYS_SUPPORTS_RELOCATABLE
122 select SYS_SUPPORTS_SMARTMIPS
123 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
124 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
125 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
126 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
127 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
128 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 Select this to build a kernel which aims to support multiple boards,
132 generally using a flattened device tree passed from the bootloader
133 using the boot protocol defined in the UHI (Unified Hosting
134 Interface) specification.
137 bool "Alchemy processor based machines"
138 select ARCH_PHYS_ADDR_T_64BIT
142 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
143 select SYS_HAS_CPU_MIPS32_R1
144 select SYS_SUPPORTS_32BIT_KERNEL
145 select SYS_SUPPORTS_APM_EMULATION
147 select SYS_SUPPORTS_ZBOOT
151 bool "Texas Instruments AR7"
153 select DMA_NONCOHERENT
157 select NO_EXCEPT_FILL
159 select SYS_HAS_CPU_MIPS32_R1
160 select SYS_HAS_EARLY_PRINTK
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
163 select SYS_SUPPORTS_MIPS16
164 select SYS_SUPPORTS_ZBOOT_UART16550
169 Support for the Texas Instruments AR7 System-on-a-Chip
170 family: TNETD7100, 7200 and 7300.
173 bool "Atheros AR231x/AR531x SoC support"
176 select DMA_NONCOHERENT
179 select SYS_HAS_CPU_MIPS32_R1
180 select SYS_SUPPORTS_BIG_ENDIAN
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_HAS_EARLY_PRINTK
184 Support for Atheros AR231x and Atheros AR531x based boards
187 bool "Atheros AR71XX/AR724X/AR913X based boards"
188 select ARCH_HAS_RESET_CONTROLLER
192 select DMA_NONCOHERENT
199 select SYS_HAS_CPU_MIPS32_R2
200 select SYS_HAS_EARLY_PRINTK
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_BIG_ENDIAN
203 select SYS_SUPPORTS_MIPS16
204 select SYS_SUPPORTS_ZBOOT_UART_PROM
207 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
210 bool "Broadcom Generic BMIPS kernel"
212 select NO_EXCEPT_FILL
218 select BCM6345_L1_IRQ
219 select BCM7038_L1_IRQ
220 select BCM7120_L2_IRQ
221 select BRCMSTB_L2_IRQ
223 select DMA_NONCOHERENT
224 select SYS_SUPPORTS_32BIT_KERNEL
225 select SYS_SUPPORTS_LITTLE_ENDIAN
226 select SYS_SUPPORTS_BIG_ENDIAN
227 select SYS_SUPPORTS_HIGHMEM
228 select SYS_HAS_CPU_BMIPS32_3300
229 select SYS_HAS_CPU_BMIPS4350
230 select SYS_HAS_CPU_BMIPS4380
231 select SYS_HAS_CPU_BMIPS5000
233 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
235 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
236 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
238 Build a generic DT-based kernel image that boots on select
239 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
240 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
241 must be set appropriately for your board.
244 bool "Broadcom BCM47XX based boards"
248 select DMA_NONCOHERENT
251 select SYS_HAS_CPU_MIPS32_R1
252 select NO_EXCEPT_FILL
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_MIPS16
256 select SYS_HAS_EARLY_PRINTK
257 select USE_GENERIC_EARLY_PRINTK_8250
259 select LEDS_GPIO_REGISTER
263 Support for BCM47XX based boards
266 bool "Broadcom BCM63XX based boards"
271 select DMA_NONCOHERENT
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_BIG_ENDIAN
275 select SYS_HAS_EARLY_PRINTK
279 select MIPS_L1_CACHE_SHIFT_4
281 Support for BCM63XX based boards
288 select DMA_NONCOHERENT
294 select PCI_GT64XXX_PCI0
296 select SYS_HAS_CPU_NEVADA
297 select SYS_HAS_EARLY_PRINTK
298 select SYS_SUPPORTS_32BIT_KERNEL
299 select SYS_SUPPORTS_64BIT_KERNEL
300 select SYS_SUPPORTS_LITTLE_ENDIAN
301 select USE_GENERIC_EARLY_PRINTK_8250
303 config MACH_DECSTATION
307 select CEVT_R4K if CPU_R4X00
309 select CSRC_R4K if CPU_R4X00
310 select CPU_DADDI_WORKAROUNDS if 64BIT
311 select CPU_R4000_WORKAROUNDS if 64BIT
312 select CPU_R4400_WORKAROUNDS if 64BIT
313 select DMA_NONCOHERENT
316 select SYS_HAS_CPU_R3000
317 select SYS_HAS_CPU_R4X00
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_LITTLE_ENDIAN
321 select SYS_SUPPORTS_128HZ
322 select SYS_SUPPORTS_256HZ
323 select SYS_SUPPORTS_1024HZ
324 select MIPS_L1_CACHE_SHIFT_4
326 This enables support for DEC's MIPS based workstations. For details
327 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
328 DECstation porting pages on <http://decstation.unix-ag.org/>.
330 If you have one of the following DECstation Models you definitely
331 want to choose R4xx0 for the CPU Type:
338 otherwise choose R3000.
341 bool "Jazz family of machines"
344 select ARCH_MAY_HAVE_PC_FDC
347 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
348 select GENERIC_ISA_DMA
349 select HAVE_PCSPKR_PLATFORM
354 select SYS_HAS_CPU_R4X00
355 select SYS_SUPPORTS_32BIT_KERNEL
356 select SYS_SUPPORTS_64BIT_KERNEL
357 select SYS_SUPPORTS_100HZ
359 This a family of machines based on the MIPS R4030 chipset which was
360 used by several vendors to build RISC/os and Windows NT workstations.
361 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
362 Olivetti M700-10 workstations.
365 bool "Ingenic SoC based machines"
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_LITTLE_ENDIAN
368 select SYS_SUPPORTS_ZBOOT_UART16550
369 select DMA_NONCOHERENT
374 select GENERIC_IRQ_CHIP
380 bool "Lantiq based platforms"
381 select DMA_NONCOHERENT
385 select SYS_HAS_CPU_MIPS32_R1
386 select SYS_HAS_CPU_MIPS32_R2
387 select SYS_SUPPORTS_BIG_ENDIAN
388 select SYS_SUPPORTS_32BIT_KERNEL
389 select SYS_SUPPORTS_MIPS16
390 select SYS_SUPPORTS_MULTITHREADING
391 select SYS_HAS_EARLY_PRINTK
398 select PINCTRL_LANTIQ
399 select ARCH_HAS_RESET_CONTROLLER
400 select RESET_CONTROLLER
403 bool "LASAT Networks platforms"
407 select DMA_NONCOHERENT
408 select SYS_HAS_EARLY_PRINTK
411 select PCI_GT64XXX_PCI0
413 select R5000_CPU_SCACHE
414 select SYS_HAS_CPU_R5000
415 select SYS_SUPPORTS_32BIT_KERNEL
416 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
417 select SYS_SUPPORTS_LITTLE_ENDIAN
419 config MACH_LOONGSON32
420 bool "Loongson-1 family of machines"
421 select SYS_SUPPORTS_ZBOOT
423 This enables support for the Loongson-1 family of machines.
425 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
426 the Institute of Computing Technology (ICT), Chinese Academy of
429 config MACH_LOONGSON64
430 bool "Loongson-2/3 family of machines"
431 select SYS_SUPPORTS_ZBOOT
433 This enables the support of Loongson-2/3 family of machines.
435 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
436 family of multi-core CPUs. They are both 64-bit general-purpose
437 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
438 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
439 in the People's Republic of China. The chief architect is Professor
442 config MACH_PISTACHIO
443 bool "IMG Pistachio SoC based boards"
447 select CLKSRC_MIPS_GIC
450 select DMA_NONCOHERENT
455 select MIPS_CPU_SCACHE
459 select SYS_HAS_CPU_MIPS32_R2
460 select SYS_SUPPORTS_32BIT_KERNEL
461 select SYS_SUPPORTS_LITTLE_ENDIAN
462 select SYS_SUPPORTS_MIPS_CPS
463 select SYS_SUPPORTS_MULTITHREADING
464 select SYS_SUPPORTS_RELOCATABLE
465 select SYS_SUPPORTS_ZBOOT
466 select SYS_HAS_EARLY_PRINTK
467 select USE_GENERIC_EARLY_PRINTK_8250
470 This enables support for the IMG Pistachio SoC platform.
473 bool "MIPSfpga Xilinx based boards"
483 select MIPS_CPU_SCACHE
484 select SYS_HAS_EARLY_PRINTK
485 select SYS_HAS_CPU_MIPS32_R2
486 select SYS_SUPPORTS_32BIT_KERNEL
487 select SYS_SUPPORTS_LITTLE_ENDIAN
488 select SYS_SUPPORTS_ZBOOT_UART16550
490 select USE_GENERIC_EARLY_PRINTK_8250
493 This enables support for the IMG University Program MIPSfpga platform.
496 bool "MIPS Malta board"
497 select ARCH_MAY_HAVE_PC_FDC
503 select CLKSRC_MIPS_GIC
505 select DMA_MAYBE_COHERENT
506 select GENERIC_ISA_DMA
507 select HAVE_PCSPKR_PLATFORM
514 select MIPS_CPU_SCACHE
515 select MIPS_L1_CACHE_SHIFT_6
516 select PCI_GT64XXX_PCI0
520 select SYS_HAS_CPU_MIPS32_R1
521 select SYS_HAS_CPU_MIPS32_R2
522 select SYS_HAS_CPU_MIPS32_R3_5
523 select SYS_HAS_CPU_MIPS32_R5
524 select SYS_HAS_CPU_MIPS32_R6
525 select SYS_HAS_CPU_MIPS64_R1
526 select SYS_HAS_CPU_MIPS64_R2
527 select SYS_HAS_CPU_MIPS64_R6
528 select SYS_HAS_CPU_NEVADA
529 select SYS_HAS_CPU_RM7000
530 select SYS_SUPPORTS_32BIT_KERNEL
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select SYS_SUPPORTS_MICROMIPS
536 select SYS_SUPPORTS_MIPS_CMP
537 select SYS_SUPPORTS_MIPS_CPS
538 select SYS_SUPPORTS_MIPS16
539 select SYS_SUPPORTS_MULTITHREADING
540 select SYS_SUPPORTS_SMARTMIPS
541 select SYS_SUPPORTS_ZBOOT
542 select SYS_SUPPORTS_RELOCATABLE
545 select ZONE_DMA32 if 64BIT
549 This enables support for the MIPS Technologies Malta evaluation
553 bool "Microchip PIC32 Family"
555 This enables support for the Microchip PIC32 family of platforms.
557 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
561 bool "NEC EMMA2RH Mark-eins board"
565 This enables support for the NEC Electronics Mark-eins boards.
568 bool "NEC VR4100 series based machines"
571 select SYS_HAS_CPU_VR41XX
572 select SYS_SUPPORTS_MIPS16
576 bool "NXP STB220 board"
579 Support for NXP Semiconductors STB220 Development Board.
586 Support for NXP Semiconductors STB225 Development Board.
589 bool "PMC-Sierra MSP chipsets"
592 select DMA_NONCOHERENT
594 select NO_EXCEPT_FILL
596 select SYS_HAS_CPU_MIPS32_R1
597 select SYS_HAS_CPU_MIPS32_R2
598 select SYS_SUPPORTS_32BIT_KERNEL
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select SYS_SUPPORTS_MIPS16
603 select SERIAL_8250_CONSOLE
604 select USB_EHCI_BIG_ENDIAN_MMIO
605 select USB_EHCI_BIG_ENDIAN_DESC
607 This adds support for the PMC-Sierra family of Multi-Service
608 Processor System-On-A-Chips. These parts include a number
609 of integrated peripherals, interfaces and DSPs in addition to
610 a variety of MIPS cores.
613 bool "Ralink based machines"
617 select DMA_NONCOHERENT
620 select SYS_HAS_CPU_MIPS32_R1
621 select SYS_HAS_CPU_MIPS32_R2
622 select SYS_SUPPORTS_32BIT_KERNEL
623 select SYS_SUPPORTS_LITTLE_ENDIAN
624 select SYS_SUPPORTS_MIPS16
625 select SYS_HAS_EARLY_PRINTK
627 select ARCH_HAS_RESET_CONTROLLER
628 select RESET_CONTROLLER
631 bool "SGI IP22 (Indy/Indigo2)"
637 select DEFAULT_SGI_PARTITION
638 select DMA_NONCOHERENT
642 select IP22_CPU_SCACHE
644 select GENERIC_ISA_DMA_SUPPORT_BROKEN
646 select SGI_HAS_INDYDOG
652 select SYS_HAS_CPU_R4X00
653 select SYS_HAS_CPU_R5000
655 # Disable EARLY_PRINTK for now since it leads to overwritten prom
656 # memory during early boot on some machines.
658 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
659 # for a more details discussion
661 # select SYS_HAS_EARLY_PRINTK
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_64BIT_KERNEL
664 select SYS_SUPPORTS_BIG_ENDIAN
665 select MIPS_L1_CACHE_SHIFT_7
667 This are the SGI Indy, Challenge S and Indigo2, as well as certain
668 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
669 that runs on these, say Y here.
672 bool "SGI IP27 (Origin200/2000)"
676 select DEFAULT_SGI_PARTITION
678 select SYS_HAS_EARLY_PRINTK
680 select NR_CPUS_DEFAULT_64
681 select SYS_HAS_CPU_R10000
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_NUMA
685 select SYS_SUPPORTS_SMP
686 select MIPS_L1_CACHE_SHIFT_7
688 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
689 workstations. To compile a Linux kernel that runs on these, say Y
693 bool "SGI IP28 (Indigo2 R10k)"
699 select DEFAULT_SGI_PARTITION
700 select DMA_NONCOHERENT
701 select GENERIC_ISA_DMA_SUPPORT_BROKEN
707 select SGI_HAS_INDYDOG
713 select SYS_HAS_CPU_R10000
715 # Disable EARLY_PRINTK for now since it leads to overwritten prom
716 # memory during early boot on some machines.
718 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
719 # for a more details discussion
721 # select SYS_HAS_EARLY_PRINTK
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select MIPS_L1_CACHE_SHIFT_7
726 This is the SGI Indigo2 with R10000 processor. To compile a Linux
727 kernel that runs on these, say Y here.
736 select DMA_NONCOHERENT
739 select R5000_CPU_SCACHE
740 select RM7000_CPU_SCACHE
741 select SYS_HAS_CPU_R5000
742 select SYS_HAS_CPU_R10000 if BROKEN
743 select SYS_HAS_CPU_RM7000
744 select SYS_HAS_CPU_NEVADA
745 select SYS_SUPPORTS_64BIT_KERNEL
746 select SYS_SUPPORTS_BIG_ENDIAN
748 If you want this kernel to run on SGI O2 workstation, say Y here.
751 bool "Sibyte BCM91120C-CRhine"
754 select SIBYTE_BCM1120
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
761 bool "Sibyte BCM91120x-Carmel"
764 select SIBYTE_BCM1120
766 select SYS_HAS_CPU_SB1
767 select SYS_SUPPORTS_BIG_ENDIAN
768 select SYS_SUPPORTS_LITTLE_ENDIAN
771 bool "Sibyte BCM91125C-CRhone"
774 select SIBYTE_BCM1125
776 select SYS_HAS_CPU_SB1
777 select SYS_SUPPORTS_BIG_ENDIAN
778 select SYS_SUPPORTS_HIGHMEM
779 select SYS_SUPPORTS_LITTLE_ENDIAN
782 bool "Sibyte BCM91125E-Rhone"
785 select SIBYTE_BCM1125H
787 select SYS_HAS_CPU_SB1
788 select SYS_SUPPORTS_BIG_ENDIAN
789 select SYS_SUPPORTS_LITTLE_ENDIAN
792 bool "Sibyte BCM91250A-SWARM"
795 select HAVE_PATA_PLATFORM
798 select SYS_HAS_CPU_SB1
799 select SYS_SUPPORTS_BIG_ENDIAN
800 select SYS_SUPPORTS_HIGHMEM
801 select SYS_SUPPORTS_LITTLE_ENDIAN
802 select ZONE_DMA32 if 64BIT
804 config SIBYTE_LITTLESUR
805 bool "Sibyte BCM91250C2-LittleSur"
808 select HAVE_PATA_PLATFORM
811 select SYS_HAS_CPU_SB1
812 select SYS_SUPPORTS_BIG_ENDIAN
813 select SYS_SUPPORTS_HIGHMEM
814 select SYS_SUPPORTS_LITTLE_ENDIAN
815 select ZONE_DMA32 if 64BIT
817 config SIBYTE_SENTOSA
818 bool "Sibyte BCM91250E-Sentosa"
823 select SYS_HAS_CPU_SB1
824 select SYS_SUPPORTS_BIG_ENDIAN
825 select SYS_SUPPORTS_LITTLE_ENDIAN
828 bool "Sibyte BCM91480B-BigSur"
831 select NR_CPUS_DEFAULT_4
832 select SIBYTE_BCM1x80
834 select SYS_HAS_CPU_SB1
835 select SYS_SUPPORTS_BIG_ENDIAN
836 select SYS_SUPPORTS_HIGHMEM
837 select SYS_SUPPORTS_LITTLE_ENDIAN
838 select ZONE_DMA32 if 64BIT
841 bool "SNI RM200/300/400"
842 select FW_ARC if CPU_LITTLE_ENDIAN
843 select FW_ARC32 if CPU_LITTLE_ENDIAN
844 select FW_SNIPROM if CPU_BIG_ENDIAN
845 select ARCH_MAY_HAVE_PC_FDC
849 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
850 select DMA_NONCOHERENT
851 select GENERIC_ISA_DMA
852 select HAVE_PCSPKR_PLATFORM
859 select MIPS_L1_CACHE_SHIFT_6
860 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
861 select SYS_HAS_CPU_R4X00
862 select SYS_HAS_CPU_R5000
863 select SYS_HAS_CPU_R10000
864 select R5000_CPU_SCACHE
865 select SYS_HAS_EARLY_PRINTK
866 select SYS_SUPPORTS_32BIT_KERNEL
867 select SYS_SUPPORTS_64BIT_KERNEL
868 select SYS_SUPPORTS_BIG_ENDIAN
869 select SYS_SUPPORTS_HIGHMEM
870 select SYS_SUPPORTS_LITTLE_ENDIAN
872 The SNI RM200/300/400 are MIPS-based machines manufactured by
873 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
874 Technology and now in turn merged with Fujitsu. Say Y here to
875 support this machine type.
878 bool "Toshiba TX39 series based machines"
881 bool "Toshiba TX49 series based machines"
883 config MIKROTIK_RB532
884 bool "Mikrotik RB532 boards"
887 select DMA_NONCOHERENT
890 select SYS_HAS_CPU_MIPS32_R1
891 select SYS_SUPPORTS_32BIT_KERNEL
892 select SYS_SUPPORTS_LITTLE_ENDIAN
896 select MIPS_L1_CACHE_SHIFT_4
898 Support the Mikrotik(tm) RouterBoard 532 series,
899 based on the IDT RC32434 SoC.
901 config CAVIUM_OCTEON_SOC
902 bool "Cavium Networks Octeon SoC based boards"
904 select ARCH_PHYS_ADDR_T_64BIT
906 select SYS_SUPPORTS_64BIT_KERNEL
907 select SYS_SUPPORTS_BIG_ENDIAN
909 select EDAC_ATOMIC_SCRUB
910 select SYS_SUPPORTS_LITTLE_ENDIAN
911 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
912 select SYS_HAS_EARLY_PRINTK
913 select SYS_HAS_CPU_CAVIUM_OCTEON
920 select ARCH_SPARSEMEM_ENABLE
921 select SYS_SUPPORTS_SMP
922 select NR_CPUS_DEFAULT_16
924 select MTD_COMPLEX_MAPPINGS
925 select SYS_SUPPORTS_RELOCATABLE
927 This option supports all of the Octeon reference boards from Cavium
928 Networks. It builds a kernel that dynamically determines the Octeon
929 CPU type and supports all known board reference implementations.
930 Some of the supported boards are:
937 Say Y here for most Octeon reference boards.
940 bool "Netlogic XLR/XLS based systems"
943 select SYS_HAS_CPU_XLR
944 select SYS_SUPPORTS_SMP
947 select SYS_SUPPORTS_32BIT_KERNEL
948 select SYS_SUPPORTS_64BIT_KERNEL
949 select ARCH_PHYS_ADDR_T_64BIT
950 select SYS_SUPPORTS_BIG_ENDIAN
951 select SYS_SUPPORTS_HIGHMEM
953 select NR_CPUS_DEFAULT_32
957 select ZONE_DMA32 if 64BIT
959 select SYS_HAS_EARLY_PRINTK
960 select SYS_SUPPORTS_ZBOOT
961 select SYS_SUPPORTS_ZBOOT_UART16550
963 Support for systems based on Netlogic XLR and XLS processors.
964 Say Y here if you have a XLR or XLS based board.
967 bool "Netlogic XLP based systems"
970 select SYS_HAS_CPU_XLP
971 select SYS_SUPPORTS_SMP
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_64BIT_KERNEL
975 select ARCH_PHYS_ADDR_T_64BIT
977 select SYS_SUPPORTS_BIG_ENDIAN
978 select SYS_SUPPORTS_LITTLE_ENDIAN
979 select SYS_SUPPORTS_HIGHMEM
981 select NR_CPUS_DEFAULT_32
985 select ZONE_DMA32 if 64BIT
987 select SYS_HAS_EARLY_PRINTK
989 select SYS_SUPPORTS_ZBOOT
990 select SYS_SUPPORTS_ZBOOT_UART16550
992 This board is based on Netlogic XLP Processor.
993 Say Y here if you have a XLP based board.
996 bool "Para-Virtualized guest system"
1000 select SYS_SUPPORTS_64BIT_KERNEL
1001 select SYS_SUPPORTS_32BIT_KERNEL
1002 select SYS_SUPPORTS_BIG_ENDIAN
1003 select SYS_SUPPORTS_SMP
1004 select NR_CPUS_DEFAULT_4
1005 select SYS_HAS_EARLY_PRINTK
1006 select SYS_HAS_CPU_MIPS32_R2
1007 select SYS_HAS_CPU_MIPS64_R2
1008 select SYS_HAS_CPU_CAVIUM_OCTEON
1010 select SWAP_IO_SPACE
1012 This option supports guest running under ????
1016 source "arch/mips/alchemy/Kconfig"
1017 source "arch/mips/ath25/Kconfig"
1018 source "arch/mips/ath79/Kconfig"
1019 source "arch/mips/bcm47xx/Kconfig"
1020 source "arch/mips/bcm63xx/Kconfig"
1021 source "arch/mips/bmips/Kconfig"
1022 source "arch/mips/generic/Kconfig"
1023 source "arch/mips/jazz/Kconfig"
1024 source "arch/mips/jz4740/Kconfig"
1025 source "arch/mips/lantiq/Kconfig"
1026 source "arch/mips/lasat/Kconfig"
1027 source "arch/mips/pic32/Kconfig"
1028 source "arch/mips/pistachio/Kconfig"
1029 source "arch/mips/pmcs-msp71xx/Kconfig"
1030 source "arch/mips/ralink/Kconfig"
1031 source "arch/mips/sgi-ip27/Kconfig"
1032 source "arch/mips/sibyte/Kconfig"
1033 source "arch/mips/txx9/Kconfig"
1034 source "arch/mips/vr41xx/Kconfig"
1035 source "arch/mips/cavium-octeon/Kconfig"
1036 source "arch/mips/loongson32/Kconfig"
1037 source "arch/mips/loongson64/Kconfig"
1038 source "arch/mips/netlogic/Kconfig"
1039 source "arch/mips/paravirt/Kconfig"
1040 source "arch/mips/xilfpga/Kconfig"
1044 config RWSEM_GENERIC_SPINLOCK
1048 config RWSEM_XCHGADD_ALGORITHM
1051 config GENERIC_HWEIGHT
1055 config GENERIC_CALIBRATE_DELAY
1059 config SCHED_OMIT_FRAME_POINTER
1064 # Select some configuration options automatically based on user selections.
1069 config ARCH_MAY_HAVE_PC_FDC
1105 config MIPS_CLOCK_VSYSCALL
1106 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1115 config ARCH_DMA_ADDR_T_64BIT
1116 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1118 config ARCH_SUPPORTS_UPROBES
1121 config DMA_MAYBE_COHERENT
1122 select DMA_NONCOHERENT
1125 config DMA_PERDEV_COHERENT
1127 select DMA_MAYBE_COHERENT
1132 config DMA_NONCOHERENT
1134 select NEED_DMA_MAP_STATE
1136 config NEED_DMA_MAP_STATE
1139 config SYS_HAS_EARLY_PRINTK
1142 config SYS_SUPPORTS_HOTPLUG_CPU
1145 config MIPS_BONITO64
1160 config NO_IOPORT_MAP
1166 config GENERIC_ISA_DMA
1168 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1171 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1173 select GENERIC_ISA_DMA
1178 config HOLES_IN_ZONE
1181 config SYS_SUPPORTS_RELOCATABLE
1184 Selected if the platform supports relocating the kernel.
1185 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1186 to allow access to command line and entropy sources.
1188 config MIPS_CBPF_JIT
1190 depends on BPF_JIT && HAVE_CBPF_JIT
1192 config MIPS_EBPF_JIT
1194 depends on BPF_JIT && HAVE_EBPF_JIT
1198 # Endianness selection. Sufficiently obscure so many users don't know what to
1199 # answer,so we try hard to limit the available choices. Also the use of a
1200 # choice statement should be more obvious to the user.
1203 prompt "Endianness selection"
1205 Some MIPS machines can be configured for either little or big endian
1206 byte order. These modes require different kernels and a different
1207 Linux distribution. In general there is one preferred byteorder for a
1208 particular system but some systems are just as commonly used in the
1209 one or the other endianness.
1211 config CPU_BIG_ENDIAN
1213 depends on SYS_SUPPORTS_BIG_ENDIAN
1215 config CPU_LITTLE_ENDIAN
1216 bool "Little endian"
1217 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1224 config SYS_SUPPORTS_APM_EMULATION
1227 config SYS_SUPPORTS_BIG_ENDIAN
1230 config SYS_SUPPORTS_LITTLE_ENDIAN
1233 config SYS_SUPPORTS_HUGETLBFS
1235 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1238 config MIPS_HUGE_TLB_SUPPORT
1239 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1256 config PCI_GT64XXX_PCI0
1259 config NO_EXCEPT_FILL
1266 select DMA_NONCOHERENT
1268 select SWAP_IO_SPACE
1269 select SYS_HAS_CPU_R5500
1270 select SYS_SUPPORTS_32BIT_KERNEL
1271 select SYS_SUPPORTS_64BIT_KERNEL
1272 select SYS_SUPPORTS_BIG_ENDIAN
1279 select DMA_NONCOHERENT
1280 select SYS_HAS_CPU_MIPS32_R2
1281 select SYS_SUPPORTS_32BIT_KERNEL
1282 select SYS_SUPPORTS_LITTLE_ENDIAN
1283 select SYS_SUPPORTS_BIG_ENDIAN
1284 select SYS_SUPPORTS_MIPS16
1285 select CPU_MIPSR2_IRQ_VI
1294 config SWAP_IO_SPACE
1297 config SGI_HAS_INDYDOG
1309 config SGI_HAS_ZILOG
1312 config SGI_HAS_I8042
1315 config DEFAULT_SGI_PARTITION
1327 config MIPS_L1_CACHE_SHIFT_4
1330 config MIPS_L1_CACHE_SHIFT_5
1333 config MIPS_L1_CACHE_SHIFT_6
1336 config MIPS_L1_CACHE_SHIFT_7
1339 config MIPS_L1_CACHE_SHIFT
1341 default "7" if MIPS_L1_CACHE_SHIFT_7
1342 default "6" if MIPS_L1_CACHE_SHIFT_6
1343 default "5" if MIPS_L1_CACHE_SHIFT_5
1344 default "4" if MIPS_L1_CACHE_SHIFT_4
1347 config HAVE_STD_PC_SERIAL_PORT
1351 bool "ARC console support"
1352 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1356 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1361 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1370 menu "CPU selection"
1376 config CPU_LOONGSON3
1377 bool "Loongson 3 CPU"
1378 depends on SYS_HAS_CPU_LOONGSON3
1379 select CPU_SUPPORTS_64BIT_KERNEL
1380 select CPU_SUPPORTS_HIGHMEM
1381 select CPU_SUPPORTS_HUGEPAGES
1382 select WEAK_ORDERING
1383 select WEAK_REORDERING_BEYOND_LLSC
1384 select MIPS_PGD_C0_CONTEXT
1385 select MIPS_L1_CACHE_SHIFT_6
1388 The Loongson 3 processor implements the MIPS64R2 instruction
1389 set with many extensions.
1391 config LOONGSON3_ENHANCEMENT
1392 bool "New Loongson 3 CPU Enhancements"
1395 select CPU_HAS_PREFETCH
1396 depends on CPU_LOONGSON3
1398 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1399 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1400 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1401 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1402 Fast TLB refill support, etc.
1404 This option enable those enhancements which are not probed at run
1405 time. If you want a generic kernel to run on all Loongson 3 machines,
1406 please say 'N' here. If you want a high-performance kernel to run on
1407 new Loongson 3 machines only, please say 'Y' here.
1409 config CPU_LOONGSON2E
1411 depends on SYS_HAS_CPU_LOONGSON2E
1412 select CPU_LOONGSON2
1414 The Loongson 2E processor implements the MIPS III instruction set
1415 with many extensions.
1417 It has an internal FPGA northbridge, which is compatible to
1420 config CPU_LOONGSON2F
1422 depends on SYS_HAS_CPU_LOONGSON2F
1423 select CPU_LOONGSON2
1426 The Loongson 2F processor implements the MIPS III instruction set
1427 with many extensions.
1429 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1430 have a similar programming interface with FPGA northbridge used in
1433 config CPU_LOONGSON1B
1435 depends on SYS_HAS_CPU_LOONGSON1B
1436 select CPU_LOONGSON1
1437 select LEDS_GPIO_REGISTER
1439 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1440 release 2 instruction set.
1442 config CPU_LOONGSON1C
1444 depends on SYS_HAS_CPU_LOONGSON1C
1445 select CPU_LOONGSON1
1446 select LEDS_GPIO_REGISTER
1448 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1449 release 2 instruction set.
1451 config CPU_MIPS32_R1
1452 bool "MIPS32 Release 1"
1453 depends on SYS_HAS_CPU_MIPS32_R1
1454 select CPU_HAS_PREFETCH
1455 select CPU_SUPPORTS_32BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1458 Choose this option to build a kernel for release 1 or later of the
1459 MIPS32 architecture. Most modern embedded systems with a 32-bit
1460 MIPS processor are based on a MIPS32 processor. If you know the
1461 specific type of processor in your system, choose those that one
1462 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1463 Release 2 of the MIPS32 architecture is available since several
1464 years so chances are you even have a MIPS32 Release 2 processor
1465 in which case you should choose CPU_MIPS32_R2 instead for better
1468 config CPU_MIPS32_R2
1469 bool "MIPS32 Release 2"
1470 depends on SYS_HAS_CPU_MIPS32_R2
1471 select CPU_HAS_PREFETCH
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_MSA
1477 Choose this option to build a kernel for release 2 or later of the
1478 MIPS32 architecture. Most modern embedded systems with a 32-bit
1479 MIPS processor are based on a MIPS32 processor. If you know the
1480 specific type of processor in your system, choose those that one
1481 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1483 config CPU_MIPS32_R6
1484 bool "MIPS32 Release 6"
1485 depends on SYS_HAS_CPU_MIPS32_R6
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_MSA
1492 select MIPS_O32_FP64_SUPPORT
1494 Choose this option to build a kernel for release 6 or later of the
1495 MIPS32 architecture. New MIPS processors, starting with the Warrior
1496 family, are based on a MIPS32r6 processor. If you own an older
1497 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1499 config CPU_MIPS64_R1
1500 bool "MIPS64 Release 1"
1501 depends on SYS_HAS_CPU_MIPS64_R1
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_HUGEPAGES
1508 Choose this option to build a kernel for release 1 or later of the
1509 MIPS64 architecture. Many modern embedded systems with a 64-bit
1510 MIPS processor are based on a MIPS64 processor. If you know the
1511 specific type of processor in your system, choose those that one
1512 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1513 Release 2 of the MIPS64 architecture is available since several
1514 years so chances are you even have a MIPS64 Release 2 processor
1515 in which case you should choose CPU_MIPS64_R2 instead for better
1518 config CPU_MIPS64_R2
1519 bool "MIPS64 Release 2"
1520 depends on SYS_HAS_CPU_MIPS64_R2
1521 select CPU_HAS_PREFETCH
1522 select CPU_SUPPORTS_32BIT_KERNEL
1523 select CPU_SUPPORTS_64BIT_KERNEL
1524 select CPU_SUPPORTS_HIGHMEM
1525 select CPU_SUPPORTS_HUGEPAGES
1526 select CPU_SUPPORTS_MSA
1529 Choose this option to build a kernel for release 2 or later of the
1530 MIPS64 architecture. Many modern embedded systems with a 64-bit
1531 MIPS processor are based on a MIPS64 processor. If you know the
1532 specific type of processor in your system, choose those that one
1533 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1535 config CPU_MIPS64_R6
1536 bool "MIPS64 Release 6"
1537 depends on SYS_HAS_CPU_MIPS64_R6
1538 select CPU_HAS_PREFETCH
1539 select CPU_SUPPORTS_32BIT_KERNEL
1540 select CPU_SUPPORTS_64BIT_KERNEL
1541 select CPU_SUPPORTS_HIGHMEM
1542 select CPU_SUPPORTS_MSA
1544 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1547 Choose this option to build a kernel for release 6 or later of the
1548 MIPS64 architecture. New MIPS processors, starting with the Warrior
1549 family, are based on a MIPS64r6 processor. If you own an older
1550 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1554 depends on SYS_HAS_CPU_R3000
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_HIGHMEM
1559 Please make sure to pick the right CPU type. Linux/MIPS is not
1560 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1561 *not* work on R4000 machines and vice versa. However, since most
1562 of the supported machines have an R4000 (or similar) CPU, R4x00
1563 might be a safe bet. If the resulting kernel does not work,
1564 try to recompile with R3000.
1568 depends on SYS_HAS_CPU_TX39XX
1569 select CPU_SUPPORTS_32BIT_KERNEL
1573 depends on SYS_HAS_CPU_VR41XX
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1577 The options selects support for the NEC VR4100 series of processors.
1578 Only choose this option if you have one of these processors as a
1579 kernel built with this option will not run on any other type of
1580 processor or vice versa.
1584 depends on SYS_HAS_CPU_R4300
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select CPU_SUPPORTS_64BIT_KERNEL
1588 MIPS Technologies R4300-series processors.
1592 depends on SYS_HAS_CPU_R4X00
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1597 MIPS Technologies R4000-series processors other than 4300, including
1598 the R4000, R4400, R4600, and 4700.
1602 depends on SYS_HAS_CPU_TX49XX
1603 select CPU_HAS_PREFETCH
1604 select CPU_SUPPORTS_32BIT_KERNEL
1605 select CPU_SUPPORTS_64BIT_KERNEL
1606 select CPU_SUPPORTS_HUGEPAGES
1610 depends on SYS_HAS_CPU_R5000
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1615 MIPS Technologies R5000-series processors other than the Nevada.
1619 depends on SYS_HAS_CPU_R5432
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HUGEPAGES
1626 depends on SYS_HAS_CPU_R5500
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HUGEPAGES
1631 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1636 depends on SYS_HAS_CPU_NEVADA
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HUGEPAGES
1641 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1645 depends on SYS_HAS_CPU_R8000
1646 select CPU_HAS_PREFETCH
1647 select CPU_SUPPORTS_64BIT_KERNEL
1649 MIPS Technologies R8000 processors. Note these processors are
1650 uncommon and the support for them is incomplete.
1654 depends on SYS_HAS_CPU_R10000
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1661 MIPS Technologies R10000-series processors.
1665 depends on SYS_HAS_CPU_RM7000
1666 select CPU_HAS_PREFETCH
1667 select CPU_SUPPORTS_32BIT_KERNEL
1668 select CPU_SUPPORTS_64BIT_KERNEL
1669 select CPU_SUPPORTS_HIGHMEM
1670 select CPU_SUPPORTS_HUGEPAGES
1674 depends on SYS_HAS_CPU_SB1
1675 select CPU_SUPPORTS_32BIT_KERNEL
1676 select CPU_SUPPORTS_64BIT_KERNEL
1677 select CPU_SUPPORTS_HIGHMEM
1678 select CPU_SUPPORTS_HUGEPAGES
1679 select WEAK_ORDERING
1681 config CPU_CAVIUM_OCTEON
1682 bool "Cavium Octeon processor"
1683 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1684 select CPU_HAS_PREFETCH
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select WEAK_ORDERING
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_SUPPORTS_HUGEPAGES
1689 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1690 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1691 select MIPS_L1_CACHE_SHIFT_7
1694 The Cavium Octeon processor is a highly integrated chip containing
1695 many ethernet hardware widgets for networking tasks. The processor
1696 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1697 Full details can be found at http://www.caviumnetworks.com.
1700 bool "Broadcom BMIPS"
1701 depends on SYS_HAS_CPU_BMIPS
1703 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1704 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1705 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1706 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1707 select CPU_SUPPORTS_32BIT_KERNEL
1708 select DMA_NONCOHERENT
1710 select SWAP_IO_SPACE
1711 select WEAK_ORDERING
1712 select CPU_SUPPORTS_HIGHMEM
1713 select CPU_HAS_PREFETCH
1714 select CPU_SUPPORTS_CPUFREQ
1715 select MIPS_EXTERNAL_TIMER
1717 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1720 bool "Netlogic XLR SoC"
1721 depends on SYS_HAS_CPU_XLR
1722 select CPU_SUPPORTS_32BIT_KERNEL
1723 select CPU_SUPPORTS_64BIT_KERNEL
1724 select CPU_SUPPORTS_HIGHMEM
1725 select CPU_SUPPORTS_HUGEPAGES
1726 select WEAK_ORDERING
1727 select WEAK_REORDERING_BEYOND_LLSC
1729 Netlogic Microsystems XLR/XLS processors.
1732 bool "Netlogic XLP SoC"
1733 depends on SYS_HAS_CPU_XLP
1734 select CPU_SUPPORTS_32BIT_KERNEL
1735 select CPU_SUPPORTS_64BIT_KERNEL
1736 select CPU_SUPPORTS_HIGHMEM
1737 select WEAK_ORDERING
1738 select WEAK_REORDERING_BEYOND_LLSC
1739 select CPU_HAS_PREFETCH
1741 select CPU_SUPPORTS_HUGEPAGES
1742 select MIPS_ASID_BITS_VARIABLE
1744 Netlogic Microsystems XLP processors.
1747 config CPU_MIPS32_3_5_FEATURES
1748 bool "MIPS32 Release 3.5 Features"
1749 depends on SYS_HAS_CPU_MIPS32_R3_5
1750 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1752 Choose this option to build a kernel for release 2 or later of the
1753 MIPS32 architecture including features from the 3.5 release such as
1754 support for Enhanced Virtual Addressing (EVA).
1756 config CPU_MIPS32_3_5_EVA
1757 bool "Enhanced Virtual Addressing (EVA)"
1758 depends on CPU_MIPS32_3_5_FEATURES
1762 Choose this option if you want to enable the Enhanced Virtual
1763 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1764 One of its primary benefits is an increase in the maximum size
1765 of lowmem (up to 3GB). If unsure, say 'N' here.
1767 config CPU_MIPS32_R5_FEATURES
1768 bool "MIPS32 Release 5 Features"
1769 depends on SYS_HAS_CPU_MIPS32_R5
1770 depends on CPU_MIPS32_R2
1772 Choose this option to build a kernel for release 2 or later of the
1773 MIPS32 architecture including features from release 5 such as
1774 support for Extended Physical Addressing (XPA).
1776 config CPU_MIPS32_R5_XPA
1777 bool "Extended Physical Addressing (XPA)"
1778 depends on CPU_MIPS32_R5_FEATURES
1780 depends on !PAGE_SIZE_4KB
1781 depends on SYS_SUPPORTS_HIGHMEM
1784 select ARCH_PHYS_ADDR_T_64BIT
1787 Choose this option if you want to enable the Extended Physical
1788 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1789 benefit is to increase physical addressing equal to or greater
1790 than 40 bits. Note that this has the side effect of turning on
1791 64-bit addressing which in turn makes the PTEs 64-bit in size.
1792 If unsure, say 'N' here.
1795 config CPU_NOP_WORKAROUNDS
1798 config CPU_JUMP_WORKAROUNDS
1801 config CPU_LOONGSON2F_WORKAROUNDS
1802 bool "Loongson 2F Workarounds"
1804 select CPU_NOP_WORKAROUNDS
1805 select CPU_JUMP_WORKAROUNDS
1807 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1808 require workarounds. Without workarounds the system may hang
1809 unexpectedly. For more information please refer to the gas
1810 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1812 Loongson 2F03 and later have fixed these issues and no workarounds
1813 are needed. The workarounds have no significant side effect on them
1814 but may decrease the performance of the system so this option should
1815 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1818 If unsure, please say Y.
1819 endif # CPU_LOONGSON2F
1821 config SYS_SUPPORTS_ZBOOT
1823 select HAVE_KERNEL_GZIP
1824 select HAVE_KERNEL_BZIP2
1825 select HAVE_KERNEL_LZ4
1826 select HAVE_KERNEL_LZMA
1827 select HAVE_KERNEL_LZO
1828 select HAVE_KERNEL_XZ
1830 config SYS_SUPPORTS_ZBOOT_UART16550
1832 select SYS_SUPPORTS_ZBOOT
1834 config SYS_SUPPORTS_ZBOOT_UART_PROM
1836 select SYS_SUPPORTS_ZBOOT
1838 config CPU_LOONGSON2
1840 select CPU_SUPPORTS_32BIT_KERNEL
1841 select CPU_SUPPORTS_64BIT_KERNEL
1842 select CPU_SUPPORTS_HIGHMEM
1843 select CPU_SUPPORTS_HUGEPAGES
1845 config CPU_LOONGSON1
1849 select CPU_HAS_PREFETCH
1850 select CPU_SUPPORTS_32BIT_KERNEL
1851 select CPU_SUPPORTS_HIGHMEM
1852 select CPU_SUPPORTS_CPUFREQ
1854 config CPU_BMIPS32_3300
1855 select SMP_UP if SMP
1858 config CPU_BMIPS4350
1860 select SYS_SUPPORTS_SMP
1861 select SYS_SUPPORTS_HOTPLUG_CPU
1863 config CPU_BMIPS4380
1865 select MIPS_L1_CACHE_SHIFT_6
1866 select SYS_SUPPORTS_SMP
1867 select SYS_SUPPORTS_HOTPLUG_CPU
1870 config CPU_BMIPS5000
1872 select MIPS_CPU_SCACHE
1873 select MIPS_L1_CACHE_SHIFT_7
1874 select SYS_SUPPORTS_SMP
1875 select SYS_SUPPORTS_HOTPLUG_CPU
1878 config SYS_HAS_CPU_LOONGSON3
1880 select CPU_SUPPORTS_CPUFREQ
1883 config SYS_HAS_CPU_LOONGSON2E
1886 config SYS_HAS_CPU_LOONGSON2F
1888 select CPU_SUPPORTS_CPUFREQ
1889 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1890 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1892 config SYS_HAS_CPU_LOONGSON1B
1895 config SYS_HAS_CPU_LOONGSON1C
1898 config SYS_HAS_CPU_MIPS32_R1
1901 config SYS_HAS_CPU_MIPS32_R2
1904 config SYS_HAS_CPU_MIPS32_R3_5
1907 config SYS_HAS_CPU_MIPS32_R5
1910 config SYS_HAS_CPU_MIPS32_R6
1913 config SYS_HAS_CPU_MIPS64_R1
1916 config SYS_HAS_CPU_MIPS64_R2
1919 config SYS_HAS_CPU_MIPS64_R6
1922 config SYS_HAS_CPU_R3000
1925 config SYS_HAS_CPU_TX39XX
1928 config SYS_HAS_CPU_VR41XX
1931 config SYS_HAS_CPU_R4300
1934 config SYS_HAS_CPU_R4X00
1937 config SYS_HAS_CPU_TX49XX
1940 config SYS_HAS_CPU_R5000
1943 config SYS_HAS_CPU_R5432
1946 config SYS_HAS_CPU_R5500
1949 config SYS_HAS_CPU_NEVADA
1952 config SYS_HAS_CPU_R8000
1955 config SYS_HAS_CPU_R10000
1958 config SYS_HAS_CPU_RM7000
1961 config SYS_HAS_CPU_SB1
1964 config SYS_HAS_CPU_CAVIUM_OCTEON
1967 config SYS_HAS_CPU_BMIPS
1970 config SYS_HAS_CPU_BMIPS32_3300
1972 select SYS_HAS_CPU_BMIPS
1974 config SYS_HAS_CPU_BMIPS4350
1976 select SYS_HAS_CPU_BMIPS
1978 config SYS_HAS_CPU_BMIPS4380
1980 select SYS_HAS_CPU_BMIPS
1982 config SYS_HAS_CPU_BMIPS5000
1984 select SYS_HAS_CPU_BMIPS
1986 config SYS_HAS_CPU_XLR
1989 config SYS_HAS_CPU_XLP
1992 config MIPS_MALTA_PM
1993 depends on MIPS_MALTA
1999 # CPU may reorder R->R, R->W, W->R, W->W
2000 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2002 config WEAK_ORDERING
2006 # CPU may reorder reads and writes beyond LL/SC
2007 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2009 config WEAK_REORDERING_BEYOND_LLSC
2014 # These two indicate any level of the MIPS32 and MIPS64 architecture
2018 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2022 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2025 # These two indicate the revision of the architecture, either Release 1 or Release 2
2029 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2033 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2039 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2041 select HAVE_ARCH_BITREVERSE
2042 select MIPS_ASID_BITS_VARIABLE
2051 config SYS_SUPPORTS_32BIT_KERNEL
2053 config SYS_SUPPORTS_64BIT_KERNEL
2055 config CPU_SUPPORTS_32BIT_KERNEL
2057 config CPU_SUPPORTS_64BIT_KERNEL
2059 config CPU_SUPPORTS_CPUFREQ
2061 config CPU_SUPPORTS_ADDRWINCFG
2063 config CPU_SUPPORTS_HUGEPAGES
2065 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2067 config MIPS_PGD_C0_CONTEXT
2069 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2072 # Set to y for ptrace access to watch registers.
2074 config HARDWARE_WATCHPOINTS
2076 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2081 prompt "Kernel code model"
2083 You should only select this option if you have a workload that
2084 actually benefits from 64-bit processing or if your machine has
2085 large memory. You will only be presented a single option in this
2086 menu if your system does not support both 32-bit and 64-bit kernels.
2089 bool "32-bit kernel"
2090 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2093 Select this option if you want to build a 32-bit kernel.
2096 bool "64-bit kernel"
2097 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2099 Select this option if you want to build a 64-bit kernel.
2104 bool "KVM Guest Kernel"
2105 depends on BROKEN_ON_SMP
2107 Select this option if building a guest kernel for KVM (Trap & Emulate)
2110 config KVM_GUEST_TIMER_FREQ
2111 int "Count/Compare Timer Frequency (MHz)"
2112 depends on KVM_GUEST
2115 Set this to non-zero if building a guest kernel for KVM to skip RTC
2116 emulation when determining guest CPU Frequency. Instead, the guest's
2117 timer frequency is specified directly.
2119 config MIPS_VA_BITS_48
2120 bool "48 bits virtual memory"
2123 Support a maximum at least 48 bits of application virtual
2124 memory. Default is 40 bits or less, depending on the CPU.
2125 For page sizes 16k and above, this option results in a small
2126 memory overhead for page tables. For 4k page size, a fourth
2127 level of page tables is added which imposes both a memory
2128 overhead as well as slower TLB fault handling.
2133 prompt "Kernel page size"
2134 default PAGE_SIZE_4KB
2136 config PAGE_SIZE_4KB
2138 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2140 This option select the standard 4kB Linux page size. On some
2141 R3000-family processors this is the only available page size. Using
2142 4kB page size will minimize memory consumption and is therefore
2143 recommended for low memory systems.
2145 config PAGE_SIZE_8KB
2147 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2148 depends on !MIPS_VA_BITS_48
2150 Using 8kB page size will result in higher performance kernel at
2151 the price of higher memory consumption. This option is available
2152 only on R8000 and cnMIPS processors. Note that you will need a
2153 suitable Linux distribution to support this.
2155 config PAGE_SIZE_16KB
2157 depends on !CPU_R3000 && !CPU_TX39XX
2159 Using 16kB page size will result in higher performance kernel at
2160 the price of higher memory consumption. This option is available on
2161 all non-R3000 family processors. Note that you will need a suitable
2162 Linux distribution to support this.
2164 config PAGE_SIZE_32KB
2166 depends on CPU_CAVIUM_OCTEON
2167 depends on !MIPS_VA_BITS_48
2169 Using 32kB page size will result in higher performance kernel at
2170 the price of higher memory consumption. This option is available
2171 only on cnMIPS cores. Note that you will need a suitable Linux
2172 distribution to support this.
2174 config PAGE_SIZE_64KB
2176 depends on !CPU_R3000 && !CPU_TX39XX
2178 Using 64kB page size will result in higher performance kernel at
2179 the price of higher memory consumption. This option is available on
2180 all non-R3000 family processor. Not that at the time of this
2181 writing this option is still high experimental.
2185 config FORCE_MAX_ZONEORDER
2186 int "Maximum zone order"
2187 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2188 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2189 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2190 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2191 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2192 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2196 The kernel memory allocator divides physically contiguous memory
2197 blocks into "zones", where each zone is a power of two number of
2198 pages. This option selects the largest power of two that the kernel
2199 keeps in the memory allocator. If you need to allocate very large
2200 blocks of physically contiguous memory, then you may need to
2201 increase this value.
2203 This config option is actually maximum order plus one. For example,
2204 a value of 11 means that the largest free memory block is 2^10 pages.
2206 The page size is not necessarily 4KB. Keep this in mind
2207 when choosing a value for this option.
2212 config IP22_CPU_SCACHE
2217 # Support for a MIPS32 / MIPS64 style S-caches
2219 config MIPS_CPU_SCACHE
2223 config R5000_CPU_SCACHE
2227 config RM7000_CPU_SCACHE
2231 config SIBYTE_DMA_PAGEOPS
2232 bool "Use DMA to clear/copy pages"
2235 Instead of using the CPU to zero and copy pages, use a Data Mover
2236 channel. These DMA channels are otherwise unused by the standard
2237 SiByte Linux port. Seems to give a small performance benefit.
2239 config CPU_HAS_PREFETCH
2242 config CPU_GENERIC_DUMP_TLB
2244 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2248 default y if !(CPU_R3000 || CPU_TX39XX)
2250 config CPU_R4K_CACHE_TLB
2252 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2255 bool "MIPS MT SMP support (1 TC on each available VPE)"
2257 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2258 select CPU_MIPSR2_IRQ_VI
2259 select CPU_MIPSR2_IRQ_EI
2264 select SYS_SUPPORTS_SMP
2265 select SYS_SUPPORTS_SCHED_SMT
2266 select MIPS_PERF_SHARED_TC_COUNTERS
2268 This is a kernel model which is known as SMVP. This is supported
2269 on cores with the MT ASE and uses the available VPEs to implement
2270 virtual processors which supports SMP. This is equivalent to the
2271 Intel Hyperthreading feature. For further information go to
2272 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2278 bool "SMT (multithreading) scheduler support"
2279 depends on SYS_SUPPORTS_SCHED_SMT
2282 SMT scheduler support improves the CPU scheduler's decision making
2283 when dealing with MIPS MT enabled cores at a cost of slightly
2284 increased overhead in some places. If unsure say N here.
2286 config SYS_SUPPORTS_SCHED_SMT
2289 config SYS_SUPPORTS_MULTITHREADING
2292 config MIPS_MT_FPAFF
2293 bool "Dynamic FPU affinity for FP-intensive threads"
2295 depends on MIPS_MT_SMP
2297 config MIPSR2_TO_R6_EMULATOR
2298 bool "MIPS R2-to-R6 emulator"
2299 depends on CPU_MIPSR6
2302 Choose this option if you want to run non-R6 MIPS userland code.
2303 Even if you say 'Y' here, the emulator will still be disabled by
2304 default. You can enable it using the 'mipsr2emu' kernel option.
2305 The only reason this is a build-time option is to save ~14K from the
2308 config MIPS_VPE_LOADER
2309 bool "VPE loader support."
2310 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2311 select CPU_MIPSR2_IRQ_VI
2312 select CPU_MIPSR2_IRQ_EI
2315 Includes a loader for loading an elf relocatable object
2316 onto another VPE and running it.
2318 config MIPS_VPE_LOADER_CMP
2321 depends on MIPS_VPE_LOADER && MIPS_CMP
2323 config MIPS_VPE_LOADER_MT
2326 depends on MIPS_VPE_LOADER && !MIPS_CMP
2328 config MIPS_VPE_LOADER_TOM
2329 bool "Load VPE program into memory hidden from linux"
2330 depends on MIPS_VPE_LOADER
2333 The loader can use memory that is present but has been hidden from
2334 Linux using the kernel command line option "mem=xxMB". It's up to
2335 you to ensure the amount you put in the option and the space your
2336 program requires is less or equal to the amount physically present.
2338 config MIPS_VPE_APSP_API
2339 bool "Enable support for AP/SP API (RTLX)"
2340 depends on MIPS_VPE_LOADER
2343 config MIPS_VPE_APSP_API_CMP
2346 depends on MIPS_VPE_APSP_API && MIPS_CMP
2348 config MIPS_VPE_APSP_API_MT
2351 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2354 bool "MIPS CMP framework support (DEPRECATED)"
2355 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2358 select SYS_SUPPORTS_SMP
2359 select WEAK_ORDERING
2362 Select this if you are using a bootloader which implements the "CMP
2363 framework" protocol (ie. YAMON) and want your kernel to make use of
2364 its ability to start secondary CPUs.
2366 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2370 bool "MIPS Coherent Processing System support"
2371 depends on SYS_SUPPORTS_MIPS_CPS
2373 select MIPS_CPS_PM if HOTPLUG_CPU
2375 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2376 select SYS_SUPPORTS_HOTPLUG_CPU
2377 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2378 select SYS_SUPPORTS_SMP
2379 select WEAK_ORDERING
2381 Select this if you wish to run an SMP kernel across multiple cores
2382 within a MIPS Coherent Processing System. When this option is
2383 enabled the kernel will probe for other cores and boot them with
2384 no external assistance. It is safe to enable this when hardware
2385 support is unavailable.
2398 config SB1_PASS_2_WORKAROUNDS
2400 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2403 config SB1_PASS_2_1_WORKAROUNDS
2405 depends on CPU_SB1 && CPU_SB1_PASS_2
2409 config ARCH_PHYS_ADDR_T_64BIT
2413 prompt "SmartMIPS or microMIPS ASE support"
2415 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2418 Select this if you want neither microMIPS nor SmartMIPS support
2420 config CPU_HAS_SMARTMIPS
2421 depends on SYS_SUPPORTS_SMARTMIPS
2424 SmartMIPS is a extension of the MIPS32 architecture aimed at
2425 increased security at both hardware and software level for
2426 smartcards. Enabling this option will allow proper use of the
2427 SmartMIPS instructions by Linux applications. However a kernel with
2428 this option will not work on a MIPS core without SmartMIPS core. If
2429 you don't know you probably don't have SmartMIPS and should say N
2432 config CPU_MICROMIPS
2433 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2436 When this option is enabled the kernel will be built using the
2442 bool "Support for the MIPS SIMD Architecture"
2443 depends on CPU_SUPPORTS_MSA
2444 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2446 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2447 and a set of SIMD instructions to operate on them. When this option
2448 is enabled the kernel will support allocating & switching MSA
2449 vector register contexts. If you know that your kernel will only be
2450 running on CPUs which do not support MSA or that your userland will
2451 not be making use of it then you may wish to say N here to reduce
2452 the size & complexity of your kernel.
2466 # Vectored interrupt mode is an R2 feature
2468 config CPU_MIPSR2_IRQ_VI
2472 # Extended interrupt mode is an R2 feature
2474 config CPU_MIPSR2_IRQ_EI
2479 depends on !CPU_R3000
2485 config CPU_DADDI_WORKAROUNDS
2488 config CPU_R4000_WORKAROUNDS
2490 select CPU_R4400_WORKAROUNDS
2492 config CPU_R4400_WORKAROUNDS
2495 config MIPS_ASID_SHIFT
2497 default 6 if CPU_R3000 || CPU_TX39XX
2498 default 4 if CPU_R8000
2501 config MIPS_ASID_BITS
2503 default 0 if MIPS_ASID_BITS_VARIABLE
2504 default 6 if CPU_R3000 || CPU_TX39XX
2507 config MIPS_ASID_BITS_VARIABLE
2511 # - Highmem only makes sense for the 32-bit kernel.
2512 # - The current highmem code will only work properly on physically indexed
2513 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2514 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2515 # moment we protect the user and offer the highmem option only on machines
2516 # where it's known to be safe. This will not offer highmem on a few systems
2517 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2518 # indexed CPUs but we're playing safe.
2519 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2520 # know they might have memory configurations that could make use of highmem
2524 bool "High Memory Support"
2525 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2527 config CPU_SUPPORTS_HIGHMEM
2530 config SYS_SUPPORTS_HIGHMEM
2533 config SYS_SUPPORTS_SMARTMIPS
2536 config SYS_SUPPORTS_MICROMIPS
2539 config SYS_SUPPORTS_MIPS16
2542 This option must be set if a kernel might be executed on a MIPS16-
2543 enabled CPU even if MIPS16 is not actually being used. In other
2544 words, it makes the kernel MIPS16-tolerant.
2546 config CPU_SUPPORTS_MSA
2549 config ARCH_FLATMEM_ENABLE
2551 depends on !NUMA && !CPU_LOONGSON2
2553 config ARCH_DISCONTIGMEM_ENABLE
2555 default y if SGI_IP27
2557 Say Y to support efficient handling of discontiguous physical memory,
2558 for architectures which are either NUMA (Non-Uniform Memory Access)
2559 or have huge holes in the physical address space for other reasons.
2560 See <file:Documentation/vm/numa> for more.
2562 config ARCH_SPARSEMEM_ENABLE
2564 select SPARSEMEM_STATIC
2568 depends on SYS_SUPPORTS_NUMA
2570 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2571 Access). This option improves performance on systems with more
2572 than two nodes; on two node systems it is generally better to
2573 leave it disabled; on single node systems disable this option
2576 config SYS_SUPPORTS_NUMA
2580 bool "Relocatable kernel"
2581 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2583 This builds a kernel image that retains relocation information
2584 so it can be loaded someplace besides the default 1MB.
2585 The relocations make the kernel binary about 15% larger,
2586 but are discarded at runtime
2588 config RELOCATION_TABLE_SIZE
2589 hex "Relocation table size"
2590 depends on RELOCATABLE
2591 range 0x0 0x01000000
2592 default "0x00100000"
2594 A table of relocation data will be appended to the kernel binary
2595 and parsed at boot to fix up the relocated kernel.
2597 This option allows the amount of space reserved for the table to be
2598 adjusted, although the default of 1Mb should be ok in most cases.
2600 The build will fail and a valid size suggested if this is too small.
2602 If unsure, leave at the default value.
2604 config RANDOMIZE_BASE
2605 bool "Randomize the address of the kernel image"
2606 depends on RELOCATABLE
2608 Randomizes the physical and virtual address at which the
2609 kernel image is loaded, as a security feature that
2610 deters exploit attempts relying on knowledge of the location
2611 of kernel internals.
2613 Entropy is generated using any coprocessor 0 registers available.
2615 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2619 config RANDOMIZE_BASE_MAX_OFFSET
2620 hex "Maximum kASLR offset" if EXPERT
2621 depends on RANDOMIZE_BASE
2622 range 0x0 0x40000000 if EVA || 64BIT
2623 range 0x0 0x08000000
2624 default "0x01000000"
2626 When kASLR is active, this provides the maximum offset that will
2627 be applied to the kernel image. It should be set according to the
2628 amount of physical RAM available in the target system minus
2629 PHYSICAL_START and must be a power of 2.
2631 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2632 EVA or 64-bit. The default is 16Mb.
2637 depends on NEED_MULTIPLE_NODES
2639 config HW_PERF_EVENTS
2640 bool "Enable hardware performance counter support for perf events"
2641 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2644 Enable hardware performance counter support for perf events. If
2645 disabled, perf events will use software events only.
2650 bool "Multi-Processing support"
2651 depends on SYS_SUPPORTS_SMP
2653 This enables support for systems with more than one CPU. If you have
2654 a system with only one CPU, say N. If you have a system with more
2655 than one CPU, say Y.
2657 If you say N here, the kernel will run on uni- and multiprocessor
2658 machines, but will use only one CPU of a multiprocessor machine. If
2659 you say Y here, the kernel will run on many, but not all,
2660 uniprocessor machines. On a uniprocessor machine, the kernel
2661 will run faster if you say N here.
2663 People using multiprocessor machines who say Y here should also say
2664 Y to "Enhanced Real Time Clock Support", below.
2666 See also the SMP-HOWTO available at
2667 <http://www.tldp.org/docs.html#howto>.
2669 If you don't know what to do here, say N.
2672 bool "Support for hot-pluggable CPUs"
2673 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2675 Say Y here to allow turning CPUs off and on. CPUs can be
2676 controlled through /sys/devices/system/cpu.
2677 (Note: power management support will enable this option
2678 automatically on SMP systems. )
2679 Say N if you want to disable CPU hotplug.
2684 config SYS_SUPPORTS_MIPS_CMP
2687 config SYS_SUPPORTS_MIPS_CPS
2690 config SYS_SUPPORTS_SMP
2693 config NR_CPUS_DEFAULT_4
2696 config NR_CPUS_DEFAULT_8
2699 config NR_CPUS_DEFAULT_16
2702 config NR_CPUS_DEFAULT_32
2705 config NR_CPUS_DEFAULT_64
2709 int "Maximum number of CPUs (2-256)"
2712 default "4" if NR_CPUS_DEFAULT_4
2713 default "8" if NR_CPUS_DEFAULT_8
2714 default "16" if NR_CPUS_DEFAULT_16
2715 default "32" if NR_CPUS_DEFAULT_32
2716 default "64" if NR_CPUS_DEFAULT_64
2718 This allows you to specify the maximum number of CPUs which this
2719 kernel will support. The maximum supported value is 32 for 32-bit
2720 kernel and 64 for 64-bit kernels; the minimum value which makes
2721 sense is 1 for Qemu (useful only for kernel debugging purposes)
2722 and 2 for all others.
2724 This is purely to save memory - each supported CPU adds
2725 approximately eight kilobytes to the kernel image. For best
2726 performance should round up your number of processors to the next
2729 config MIPS_PERF_SHARED_TC_COUNTERS
2733 # Timer Interrupt Frequency Configuration
2737 prompt "Timer frequency"
2740 Allows the configuration of the timer frequency.
2743 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2746 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2764 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2768 config SYS_SUPPORTS_24HZ
2771 config SYS_SUPPORTS_48HZ
2774 config SYS_SUPPORTS_100HZ
2777 config SYS_SUPPORTS_128HZ
2780 config SYS_SUPPORTS_250HZ
2783 config SYS_SUPPORTS_256HZ
2786 config SYS_SUPPORTS_1000HZ
2789 config SYS_SUPPORTS_1024HZ
2792 config SYS_SUPPORTS_ARBIT_HZ
2794 default y if !SYS_SUPPORTS_24HZ && \
2795 !SYS_SUPPORTS_48HZ && \
2796 !SYS_SUPPORTS_100HZ && \
2797 !SYS_SUPPORTS_128HZ && \
2798 !SYS_SUPPORTS_250HZ && \
2799 !SYS_SUPPORTS_256HZ && \
2800 !SYS_SUPPORTS_1000HZ && \
2801 !SYS_SUPPORTS_1024HZ
2807 default 100 if HZ_100
2808 default 128 if HZ_128
2809 default 250 if HZ_250
2810 default 256 if HZ_256
2811 default 1000 if HZ_1000
2812 default 1024 if HZ_1024
2815 def_bool HIGH_RES_TIMERS
2817 source "kernel/Kconfig.preempt"
2820 bool "Kexec system call"
2823 kexec is a system call that implements the ability to shutdown your
2824 current kernel, and to start another kernel. It is like a reboot
2825 but it is independent of the system firmware. And like a reboot
2826 you can start any kernel with it, not just Linux.
2828 The name comes from the similarity to the exec system call.
2830 It is an ongoing process to be certain the hardware in a machine
2831 is properly shutdown, so do not be surprised if this code does not
2832 initially work for you. As of this writing the exact hardware
2833 interface is strongly in flux, so no good recommendation can be
2837 bool "Kernel crash dumps"
2839 Generate crash dump after being started by kexec.
2840 This should be normally only set in special crash dump kernels
2841 which are loaded in the main kernel with kexec-tools into
2842 a specially reserved region and then later executed after
2843 a crash by kdump/kexec. The crash dump kernel must be compiled
2844 to a memory address not used by the main kernel or firmware using
2847 config PHYSICAL_START
2848 hex "Physical address where the kernel is loaded"
2849 default "0xffffffff84000000" if 64BIT
2850 default "0x84000000" if 32BIT
2851 depends on CRASH_DUMP
2853 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2854 If you plan to use kernel for capturing the crash dump change
2855 this value to start of the reserved region (the "X" value as
2856 specified in the "crashkernel=YM@XM" command line boot parameter
2857 passed to the panic-ed kernel).
2860 bool "Enable seccomp to safely compute untrusted bytecode"
2864 This kernel feature is useful for number crunching applications
2865 that may need to compute untrusted bytecode during their
2866 execution. By using pipes or other transports made available to
2867 the process as file descriptors supporting the read/write
2868 syscalls, it's possible to isolate those applications in
2869 their own address space using seccomp. Once seccomp is
2870 enabled via /proc/<pid>/seccomp, it cannot be disabled
2871 and the task is only allowed to execute a few safe syscalls
2872 defined by each seccomp mode.
2874 If unsure, say Y. Only embedded should say N here.
2876 config MIPS_O32_FP64_SUPPORT
2877 bool "Support for O32 binaries using 64-bit FP"
2878 depends on 32BIT || MIPS32_O32
2880 When this is enabled, the kernel will support use of 64-bit floating
2881 point registers with binaries using the O32 ABI along with the
2882 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2883 32-bit MIPS systems this support is at the cost of increasing the
2884 size and complexity of the compiled FPU emulator. Thus if you are
2885 running a MIPS32 system and know that none of your userland binaries
2886 will require 64-bit floating point, you may wish to reduce the size
2887 of your kernel & potentially improve FP emulation performance by
2890 Although binutils currently supports use of this flag the details
2891 concerning its effect upon the O32 ABI in userland are still being
2892 worked on. In order to avoid userland becoming dependant upon current
2893 behaviour before the details have been finalised, this option should
2894 be considered experimental and only enabled by those working upon
2902 select OF_EARLY_FLATTREE
2909 prompt "Kernel appended dtb support" if USE_OF
2910 default MIPS_NO_APPENDED_DTB
2912 config MIPS_NO_APPENDED_DTB
2915 Do not enable appended dtb support.
2917 config MIPS_ELF_APPENDED_DTB
2920 With this option, the boot code will look for a device tree binary
2921 DTB) included in the vmlinux ELF section .appended_dtb. By default
2922 it is empty and the DTB can be appended using binutils command
2925 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2927 This is meant as a backward compatiblity convenience for those
2928 systems with a bootloader that can't be upgraded to accommodate
2929 the documented boot protocol using a device tree.
2931 config MIPS_RAW_APPENDED_DTB
2932 bool "vmlinux.bin or vmlinuz.bin"
2934 With this option, the boot code will look for a device tree binary
2935 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2936 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2938 This is meant as a backward compatibility convenience for those
2939 systems with a bootloader that can't be upgraded to accommodate
2940 the documented boot protocol using a device tree.
2942 Beware that there is very little in terms of protection against
2943 this option being confused by leftover garbage in memory that might
2944 look like a DTB header after a reboot if no actual DTB is appended
2945 to vmlinux.bin. Do not leave this option active in a production kernel
2946 if you don't intend to always append a DTB.
2950 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2951 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2954 default MIPS_CMDLINE_FROM_BOOTLOADER
2956 config MIPS_CMDLINE_FROM_DTB
2958 bool "Dtb kernel arguments if available"
2960 config MIPS_CMDLINE_DTB_EXTEND
2962 bool "Extend dtb kernel arguments with bootloader arguments"
2964 config MIPS_CMDLINE_FROM_BOOTLOADER
2965 bool "Bootloader kernel arguments if available"
2967 config MIPS_CMDLINE_BUILTIN_EXTEND
2968 depends on CMDLINE_BOOL
2969 bool "Extend builtin kernel arguments with bootloader arguments"
2974 config LOCKDEP_SUPPORT
2978 config STACKTRACE_SUPPORT
2982 config HAVE_LATENCYTOP_SUPPORT
2986 config PGTABLE_LEVELS
2988 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2989 default 3 if 64BIT && !PAGE_SIZE_64KB
2992 source "init/Kconfig"
2994 source "kernel/Kconfig.freezer"
2996 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3004 bool "Support for PCI controller"
3005 depends on HW_HAS_PCI
3008 Find out whether you have a PCI motherboard. PCI is the name of a
3009 bus system, i.e. the way the CPU talks to the other stuff inside
3010 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3014 bool "Support for HT-linked PCI"
3016 depends on CPU_LOONGSON3
3020 Loongson family machines use Hyper-Transport bus for inter-core
3021 connection and device connection. The PCI bus is a subordinate
3022 linked at HT. Choose Y for Loongson-3 based machines.
3027 config PCI_DOMAINS_GENERIC
3030 config PCI_DRIVERS_GENERIC
3031 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3034 config PCI_DRIVERS_LEGACY
3035 def_bool !PCI_DRIVERS_GENERIC
3036 select NO_GENERIC_PCI_IOPORT_MAP
3038 source "drivers/pci/Kconfig"
3041 # ISA support is now enabled via select. Too many systems still have the one
3042 # or other ISA chip on the board that users don't know about so don't expect
3043 # users to choose the right thing ...
3050 depends on HW_HAS_EISA
3052 select GENERIC_ISA_DMA
3054 The Extended Industry Standard Architecture (EISA) bus was
3055 developed as an open alternative to the IBM MicroChannel bus.
3057 The EISA bus provided some of the features of the IBM MicroChannel
3058 bus while maintaining backward compatibility with cards made for
3059 the older ISA bus. The EISA bus saw limited use between 1988 and
3060 1995 when it was made obsolete by the PCI bus.
3062 Say Y here if you are building a kernel for an EISA-based machine.
3066 source "drivers/eisa/Kconfig"
3069 bool "TURBOchannel support"
3070 depends on MACH_DECSTATION
3072 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3073 processors. TURBOchannel programming specifications are available
3075 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3077 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3078 Linux driver support status is documented at:
3079 <http://www.linux-mips.org/wiki/DECstation>
3085 config ARCH_MMAP_RND_BITS_MIN
3089 config ARCH_MMAP_RND_BITS_MAX
3093 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3096 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3103 select MIPS_EXTERNAL_TIMER
3111 source "drivers/pcmcia/Kconfig"
3114 tristate "RapidIO support"
3118 If you say Y here, the kernel will include drivers and
3119 infrastructure code to support RapidIO interconnect devices.
3121 source "drivers/rapidio/Kconfig"
3125 menu "Executable file formats"
3127 source "fs/Kconfig.binfmt"
3132 config MIPS32_COMPAT
3138 config SYSVIPC_COMPAT
3142 bool "Kernel support for o32 binaries"
3144 select ARCH_WANT_OLD_COMPAT_IPC
3146 select MIPS32_COMPAT
3147 select SYSVIPC_COMPAT if SYSVIPC
3149 Select this option if you want to run o32 binaries. These are pure
3150 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3151 existing binaries are in this format.
3156 bool "Kernel support for n32 binaries"
3158 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3160 select MIPS32_COMPAT
3161 select SYSVIPC_COMPAT if SYSVIPC
3163 Select this option if you want to run n32 binaries. These are
3164 64-bit binaries using 32-bit quantities for addressing and certain
3165 data that would normally be 64-bit. They are used in special
3172 default y if MIPS32_O32 || MIPS32_N32
3177 menu "Power management options"
3179 config ARCH_HIBERNATION_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 config ARCH_SUSPEND_POSSIBLE
3185 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3187 source "kernel/power/Kconfig"
3191 config MIPS_EXTERNAL_TIMER
3194 menu "CPU Power Management"
3196 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3197 source "drivers/cpufreq/Kconfig"
3200 source "drivers/cpuidle/Kconfig"
3204 source "net/Kconfig"
3206 source "drivers/Kconfig"
3208 source "drivers/firmware/Kconfig"
3212 source "arch/mips/Kconfig.debug"
3214 source "security/Kconfig"
3216 source "crypto/Kconfig"
3218 source "lib/Kconfig"
3220 source "arch/mips/kvm/Kconfig"