1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_HAS_CPU_FINALIZE_INIT
8 select ARCH_DISCARD_MEMBLOCK
9 select ARCH_HAS_ELF_RANDOMIZE
10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11 select ARCH_MIGHT_HAVE_PC_PARPORT
12 select ARCH_MIGHT_HAVE_PC_SERIO
13 select ARCH_SUPPORTS_UPROBES
14 select ARCH_USE_BUILTIN_BSWAP
15 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
16 select ARCH_USE_QUEUED_RWLOCKS
17 select ARCH_USE_QUEUED_SPINLOCKS
18 select ARCH_WANT_IPC_PARSE_VERSION
19 select BUILDTIME_EXTABLE_SORT
20 select CLONE_BACKWARDS
21 select CPU_PM if CPU_IDLE
22 select GENERIC_ATOMIC64 if !64BIT
23 select GENERIC_CLOCKEVENTS
24 select GENERIC_CMOS_UPDATE
25 select GENERIC_CPU_AUTOPROBE
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select GENERIC_PCI_IOMAP
29 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
30 select GENERIC_SMP_IDLE_THREAD
31 select GENERIC_TIME_VSYSCALL
32 select HANDLE_DOMAIN_IRQ
33 select HAVE_ARCH_COMPILER_H
34 select HAVE_ARCH_JUMP_LABEL
36 select HAVE_ARCH_MMAP_RND_BITS if MMU
37 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
38 select HAVE_ARCH_SECCOMP_FILTER
39 select HAVE_ARCH_TRACEHOOK
40 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
41 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
42 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
43 select HAVE_CC_STACKPROTECTOR
44 select HAVE_CONTEXT_TRACKING
45 select HAVE_COPY_THREAD_TLS
46 select HAVE_C_RECORDMCOUNT
47 select HAVE_DEBUG_KMEMLEAK
48 select HAVE_DEBUG_STACKOVERFLOW
49 select HAVE_DMA_API_DEBUG
50 select HAVE_DMA_CONTIGUOUS
51 select HAVE_DYNAMIC_FTRACE
52 select HAVE_EXIT_THREAD
53 select HAVE_FTRACE_MCOUNT_RECORD
54 select HAVE_FUNCTION_GRAPH_TRACER
55 select HAVE_FUNCTION_TRACER
56 select HAVE_GENERIC_DMA_COHERENT
58 select HAVE_IRQ_EXIT_ON_IRQ_STACK
59 select HAVE_IRQ_TIME_ACCOUNTING
61 select HAVE_KRETPROBES
63 select HAVE_MEMBLOCK_NODE_MAP
64 select HAVE_MOD_ARCH_SPECIFIC
67 select HAVE_PERF_EVENTS
68 select HAVE_REGS_AND_STACK_ACCESS_API
69 select HAVE_SYSCALL_TRACEPOINTS
70 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
71 select IRQ_FORCED_THREADING
72 select MODULES_USE_ELF_RELA if MODULES && 64BIT
73 select MODULES_USE_ELF_REL if MODULES
74 select PERF_USE_VMALLOC
75 select RTC_LIB if !MACH_LOONGSON64
76 select SYSCTL_EXCEPTION_TRACE
79 menu "Machine selection"
86 bool "Generic board-agnostic MIPS kernel"
90 select CLKSRC_MIPS_GIC
92 select CPU_MIPSR2_IRQ_VI
93 select CPU_MIPSR2_IRQ_EI
95 select DMA_PERDEV_COHERENT
99 select MIPS_CPU_SCACHE
101 select MIPS_L1_CACHE_SHIFT_7
102 select NO_EXCEPT_FILL
103 select PCI_DRIVERS_GENERIC
107 select SYS_HAS_CPU_MIPS32_R1
108 select SYS_HAS_CPU_MIPS32_R2
109 select SYS_HAS_CPU_MIPS32_R6
110 select SYS_HAS_CPU_MIPS64_R1
111 select SYS_HAS_CPU_MIPS64_R2
112 select SYS_HAS_CPU_MIPS64_R6
113 select SYS_SUPPORTS_32BIT_KERNEL
114 select SYS_SUPPORTS_64BIT_KERNEL
115 select SYS_SUPPORTS_BIG_ENDIAN
116 select SYS_SUPPORTS_HIGHMEM
117 select SYS_SUPPORTS_LITTLE_ENDIAN
118 select SYS_SUPPORTS_MICROMIPS
119 select SYS_SUPPORTS_MIPS_CPS
120 select SYS_SUPPORTS_MIPS16
121 select SYS_SUPPORTS_MULTITHREADING
122 select SYS_SUPPORTS_RELOCATABLE
123 select SYS_SUPPORTS_SMARTMIPS
124 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
125 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
126 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
127 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
128 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
129 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
132 Select this to build a kernel which aims to support multiple boards,
133 generally using a flattened device tree passed from the bootloader
134 using the boot protocol defined in the UHI (Unified Hosting
135 Interface) specification.
138 bool "Alchemy processor based machines"
139 select ARCH_PHYS_ADDR_T_64BIT
143 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
144 select SYS_HAS_CPU_MIPS32_R1
145 select SYS_SUPPORTS_32BIT_KERNEL
146 select SYS_SUPPORTS_APM_EMULATION
148 select SYS_SUPPORTS_ZBOOT
152 bool "Texas Instruments AR7"
154 select DMA_NONCOHERENT
158 select NO_EXCEPT_FILL
160 select SYS_HAS_CPU_MIPS32_R1
161 select SYS_HAS_EARLY_PRINTK
162 select SYS_SUPPORTS_32BIT_KERNEL
163 select SYS_SUPPORTS_LITTLE_ENDIAN
164 select SYS_SUPPORTS_MIPS16
165 select SYS_SUPPORTS_ZBOOT_UART16550
170 Support for the Texas Instruments AR7 System-on-a-Chip
171 family: TNETD7100, 7200 and 7300.
174 bool "Atheros AR231x/AR531x SoC support"
177 select DMA_NONCOHERENT
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_SUPPORTS_BIG_ENDIAN
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_HAS_EARLY_PRINTK
185 Support for Atheros AR231x and Atheros AR531x based boards
188 bool "Atheros AR71XX/AR724X/AR913X based boards"
189 select ARCH_HAS_RESET_CONTROLLER
193 select DMA_NONCOHERENT
200 select SYS_HAS_CPU_MIPS32_R2
201 select SYS_HAS_EARLY_PRINTK
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_SUPPORTS_BIG_ENDIAN
204 select SYS_SUPPORTS_MIPS16
205 select SYS_SUPPORTS_ZBOOT_UART_PROM
208 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
211 bool "Broadcom Generic BMIPS kernel"
213 select NO_EXCEPT_FILL
219 select BCM6345_L1_IRQ
220 select BCM7038_L1_IRQ
221 select BCM7120_L2_IRQ
222 select BRCMSTB_L2_IRQ
224 select DMA_NONCOHERENT
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_LITTLE_ENDIAN
227 select SYS_SUPPORTS_BIG_ENDIAN
228 select SYS_SUPPORTS_HIGHMEM
229 select SYS_HAS_CPU_BMIPS32_3300
230 select SYS_HAS_CPU_BMIPS4350
231 select SYS_HAS_CPU_BMIPS4380
232 select SYS_HAS_CPU_BMIPS5000
234 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
235 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
236 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
237 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
239 Build a generic DT-based kernel image that boots on select
240 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
241 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
242 must be set appropriately for your board.
245 bool "Broadcom BCM47XX based boards"
249 select DMA_NONCOHERENT
252 select SYS_HAS_CPU_MIPS32_R1
253 select NO_EXCEPT_FILL
254 select SYS_SUPPORTS_32BIT_KERNEL
255 select SYS_SUPPORTS_LITTLE_ENDIAN
256 select SYS_SUPPORTS_MIPS16
257 select SYS_HAS_EARLY_PRINTK
258 select USE_GENERIC_EARLY_PRINTK_8250
260 select LEDS_GPIO_REGISTER
264 Support for BCM47XX based boards
267 bool "Broadcom BCM63XX based boards"
272 select DMA_NONCOHERENT
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_BIG_ENDIAN
276 select SYS_HAS_EARLY_PRINTK
277 select SYS_HAS_CPU_BMIPS32_3300
278 select SYS_HAS_CPU_BMIPS4350
279 select SYS_HAS_CPU_BMIPS4380
283 select MIPS_L1_CACHE_SHIFT_4
285 Support for BCM63XX based boards
292 select DMA_NONCOHERENT
298 select PCI_GT64XXX_PCI0
300 select SYS_HAS_CPU_NEVADA
301 select SYS_HAS_EARLY_PRINTK
302 select SYS_SUPPORTS_32BIT_KERNEL
303 select SYS_SUPPORTS_64BIT_KERNEL
304 select SYS_SUPPORTS_LITTLE_ENDIAN
305 select USE_GENERIC_EARLY_PRINTK_8250
307 config MACH_DECSTATION
311 select CEVT_R4K if CPU_R4X00
313 select CSRC_R4K if CPU_R4X00
314 select CPU_DADDI_WORKAROUNDS if 64BIT
315 select CPU_R4000_WORKAROUNDS if 64BIT
316 select CPU_R4400_WORKAROUNDS if 64BIT
317 select DMA_NONCOHERENT
320 select SYS_HAS_CPU_R3000
321 select SYS_HAS_CPU_R4X00
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_64BIT_KERNEL
324 select SYS_SUPPORTS_LITTLE_ENDIAN
325 select SYS_SUPPORTS_128HZ
326 select SYS_SUPPORTS_256HZ
327 select SYS_SUPPORTS_1024HZ
328 select MIPS_L1_CACHE_SHIFT_4
330 This enables support for DEC's MIPS based workstations. For details
331 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
332 DECstation porting pages on <http://decstation.unix-ag.org/>.
334 If you have one of the following DECstation Models you definitely
335 want to choose R4xx0 for the CPU Type:
342 otherwise choose R3000.
345 bool "Jazz family of machines"
348 select ARCH_MAY_HAVE_PC_FDC
351 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
352 select GENERIC_ISA_DMA
353 select HAVE_PCSPKR_PLATFORM
358 select SYS_HAS_CPU_R4X00
359 select SYS_SUPPORTS_32BIT_KERNEL
360 select SYS_SUPPORTS_64BIT_KERNEL
361 select SYS_SUPPORTS_100HZ
363 This a family of machines based on the MIPS R4030 chipset which was
364 used by several vendors to build RISC/os and Windows NT workstations.
365 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
366 Olivetti M700-10 workstations.
369 bool "Ingenic SoC based machines"
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_LITTLE_ENDIAN
372 select SYS_SUPPORTS_ZBOOT_UART16550
373 select DMA_NONCOHERENT
378 select GENERIC_IRQ_CHIP
384 bool "Lantiq based platforms"
385 select DMA_NONCOHERENT
389 select SYS_HAS_CPU_MIPS32_R1
390 select SYS_HAS_CPU_MIPS32_R2
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_MIPS16
394 select SYS_SUPPORTS_MULTITHREADING
395 select SYS_HAS_EARLY_PRINTK
402 select PINCTRL_LANTIQ
403 select ARCH_HAS_RESET_CONTROLLER
404 select RESET_CONTROLLER
407 bool "LASAT Networks platforms"
411 select DMA_NONCOHERENT
412 select SYS_HAS_EARLY_PRINTK
415 select PCI_GT64XXX_PCI0
417 select R5000_CPU_SCACHE
418 select SYS_HAS_CPU_R5000
419 select SYS_SUPPORTS_32BIT_KERNEL
420 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
421 select SYS_SUPPORTS_LITTLE_ENDIAN
423 config MACH_LOONGSON32
424 bool "Loongson-1 family of machines"
425 select SYS_SUPPORTS_ZBOOT
427 This enables support for the Loongson-1 family of machines.
429 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
430 the Institute of Computing Technology (ICT), Chinese Academy of
433 config MACH_LOONGSON64
434 bool "Loongson-2/3 family of machines"
435 select SYS_SUPPORTS_ZBOOT
437 This enables the support of Loongson-2/3 family of machines.
439 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
440 family of multi-core CPUs. They are both 64-bit general-purpose
441 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
442 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
443 in the People's Republic of China. The chief architect is Professor
446 config MACH_PISTACHIO
447 bool "IMG Pistachio SoC based boards"
451 select CLKSRC_MIPS_GIC
454 select DMA_NONCOHERENT
459 select MIPS_CPU_SCACHE
463 select SYS_HAS_CPU_MIPS32_R2
464 select SYS_SUPPORTS_32BIT_KERNEL
465 select SYS_SUPPORTS_LITTLE_ENDIAN
466 select SYS_SUPPORTS_MIPS_CPS
467 select SYS_SUPPORTS_MULTITHREADING
468 select SYS_SUPPORTS_RELOCATABLE
469 select SYS_SUPPORTS_ZBOOT
470 select SYS_HAS_EARLY_PRINTK
471 select USE_GENERIC_EARLY_PRINTK_8250
474 This enables support for the IMG Pistachio SoC platform.
477 bool "MIPSfpga Xilinx based boards"
487 select MIPS_CPU_SCACHE
488 select SYS_HAS_EARLY_PRINTK
489 select SYS_HAS_CPU_MIPS32_R2
490 select SYS_SUPPORTS_32BIT_KERNEL
491 select SYS_SUPPORTS_LITTLE_ENDIAN
492 select SYS_SUPPORTS_ZBOOT_UART16550
494 select USE_GENERIC_EARLY_PRINTK_8250
497 This enables support for the IMG University Program MIPSfpga platform.
500 bool "MIPS Malta board"
501 select ARCH_MAY_HAVE_PC_FDC
507 select CLKSRC_MIPS_GIC
509 select DMA_MAYBE_COHERENT
510 select GENERIC_ISA_DMA
511 select HAVE_PCSPKR_PLATFORM
518 select MIPS_CPU_SCACHE
519 select MIPS_L1_CACHE_SHIFT_6
520 select PCI_GT64XXX_PCI0
524 select SYS_HAS_CPU_MIPS32_R1
525 select SYS_HAS_CPU_MIPS32_R2
526 select SYS_HAS_CPU_MIPS32_R3_5
527 select SYS_HAS_CPU_MIPS32_R5
528 select SYS_HAS_CPU_MIPS32_R6
529 select SYS_HAS_CPU_MIPS64_R1
530 select SYS_HAS_CPU_MIPS64_R2
531 select SYS_HAS_CPU_MIPS64_R6
532 select SYS_HAS_CPU_NEVADA
533 select SYS_HAS_CPU_RM7000
534 select SYS_SUPPORTS_32BIT_KERNEL
535 select SYS_SUPPORTS_64BIT_KERNEL
536 select SYS_SUPPORTS_BIG_ENDIAN
537 select SYS_SUPPORTS_HIGHMEM
538 select SYS_SUPPORTS_LITTLE_ENDIAN
539 select SYS_SUPPORTS_MICROMIPS
540 select SYS_SUPPORTS_MIPS_CMP
541 select SYS_SUPPORTS_MIPS_CPS
542 select SYS_SUPPORTS_MIPS16
543 select SYS_SUPPORTS_MULTITHREADING
544 select SYS_SUPPORTS_SMARTMIPS
545 select SYS_SUPPORTS_ZBOOT
546 select SYS_SUPPORTS_RELOCATABLE
549 select ZONE_DMA32 if 64BIT
553 This enables support for the MIPS Technologies Malta evaluation
557 bool "Microchip PIC32 Family"
559 This enables support for the Microchip PIC32 family of platforms.
561 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
565 bool "NEC EMMA2RH Mark-eins board"
569 This enables support for the NEC Electronics Mark-eins boards.
572 bool "NEC VR4100 series based machines"
575 select SYS_HAS_CPU_VR41XX
576 select SYS_SUPPORTS_MIPS16
580 bool "NXP STB220 board"
583 Support for NXP Semiconductors STB220 Development Board.
590 Support for NXP Semiconductors STB225 Development Board.
593 bool "PMC-Sierra MSP chipsets"
596 select DMA_NONCOHERENT
598 select NO_EXCEPT_FILL
600 select SYS_HAS_CPU_MIPS32_R1
601 select SYS_HAS_CPU_MIPS32_R2
602 select SYS_SUPPORTS_32BIT_KERNEL
603 select SYS_SUPPORTS_BIG_ENDIAN
604 select SYS_SUPPORTS_MIPS16
607 select SERIAL_8250_CONSOLE
608 select USB_EHCI_BIG_ENDIAN_MMIO
609 select USB_EHCI_BIG_ENDIAN_DESC
611 This adds support for the PMC-Sierra family of Multi-Service
612 Processor System-On-A-Chips. These parts include a number
613 of integrated peripherals, interfaces and DSPs in addition to
614 a variety of MIPS cores.
617 bool "Ralink based machines"
621 select DMA_NONCOHERENT
624 select SYS_HAS_CPU_MIPS32_R1
625 select SYS_HAS_CPU_MIPS32_R2
626 select SYS_SUPPORTS_32BIT_KERNEL
627 select SYS_SUPPORTS_LITTLE_ENDIAN
628 select SYS_SUPPORTS_MIPS16
629 select SYS_HAS_EARLY_PRINTK
631 select ARCH_HAS_RESET_CONTROLLER
632 select RESET_CONTROLLER
635 bool "SGI IP22 (Indy/Indigo2)"
641 select DEFAULT_SGI_PARTITION
642 select DMA_NONCOHERENT
646 select IP22_CPU_SCACHE
648 select GENERIC_ISA_DMA_SUPPORT_BROKEN
650 select SGI_HAS_INDYDOG
656 select SYS_HAS_CPU_R4X00
657 select SYS_HAS_CPU_R5000
659 # Disable EARLY_PRINTK for now since it leads to overwritten prom
660 # memory during early boot on some machines.
662 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
663 # for a more details discussion
665 # select SYS_HAS_EARLY_PRINTK
666 select SYS_SUPPORTS_32BIT_KERNEL
667 select SYS_SUPPORTS_64BIT_KERNEL
668 select SYS_SUPPORTS_BIG_ENDIAN
669 select MIPS_L1_CACHE_SHIFT_7
671 This are the SGI Indy, Challenge S and Indigo2, as well as certain
672 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
673 that runs on these, say Y here.
676 bool "SGI IP27 (Origin200/2000)"
680 select DEFAULT_SGI_PARTITION
682 select SYS_HAS_EARLY_PRINTK
684 select NR_CPUS_DEFAULT_64
685 select SYS_HAS_CPU_R10000
686 select SYS_SUPPORTS_64BIT_KERNEL
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select SYS_SUPPORTS_NUMA
689 select SYS_SUPPORTS_SMP
690 select MIPS_L1_CACHE_SHIFT_7
692 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
693 workstations. To compile a Linux kernel that runs on these, say Y
697 bool "SGI IP28 (Indigo2 R10k)"
703 select DEFAULT_SGI_PARTITION
704 select DMA_NONCOHERENT
705 select GENERIC_ISA_DMA_SUPPORT_BROKEN
711 select SGI_HAS_INDYDOG
717 select SYS_HAS_CPU_R10000
719 # Disable EARLY_PRINTK for now since it leads to overwritten prom
720 # memory during early boot on some machines.
722 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
723 # for a more details discussion
725 # select SYS_HAS_EARLY_PRINTK
726 select SYS_SUPPORTS_64BIT_KERNEL
727 select SYS_SUPPORTS_BIG_ENDIAN
728 select MIPS_L1_CACHE_SHIFT_7
730 This is the SGI Indigo2 with R10000 processor. To compile a Linux
731 kernel that runs on these, say Y here.
740 select DMA_NONCOHERENT
743 select R5000_CPU_SCACHE
744 select RM7000_CPU_SCACHE
745 select SYS_HAS_CPU_R5000
746 select SYS_HAS_CPU_R10000 if BROKEN
747 select SYS_HAS_CPU_RM7000
748 select SYS_HAS_CPU_NEVADA
749 select SYS_SUPPORTS_64BIT_KERNEL
750 select SYS_SUPPORTS_BIG_ENDIAN
752 If you want this kernel to run on SGI O2 workstation, say Y here.
755 bool "Sibyte BCM91120C-CRhine"
758 select SIBYTE_BCM1120
760 select SYS_HAS_CPU_SB1
761 select SYS_SUPPORTS_BIG_ENDIAN
762 select SYS_SUPPORTS_LITTLE_ENDIAN
765 bool "Sibyte BCM91120x-Carmel"
768 select SIBYTE_BCM1120
770 select SYS_HAS_CPU_SB1
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_LITTLE_ENDIAN
775 bool "Sibyte BCM91125C-CRhone"
778 select SIBYTE_BCM1125
780 select SYS_HAS_CPU_SB1
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_HIGHMEM
783 select SYS_SUPPORTS_LITTLE_ENDIAN
786 bool "Sibyte BCM91125E-Rhone"
789 select SIBYTE_BCM1125H
791 select SYS_HAS_CPU_SB1
792 select SYS_SUPPORTS_BIG_ENDIAN
793 select SYS_SUPPORTS_LITTLE_ENDIAN
796 bool "Sibyte BCM91250A-SWARM"
799 select HAVE_PATA_PLATFORM
802 select SYS_HAS_CPU_SB1
803 select SYS_SUPPORTS_BIG_ENDIAN
804 select SYS_SUPPORTS_HIGHMEM
805 select SYS_SUPPORTS_LITTLE_ENDIAN
806 select ZONE_DMA32 if 64BIT
808 config SIBYTE_LITTLESUR
809 bool "Sibyte BCM91250C2-LittleSur"
812 select HAVE_PATA_PLATFORM
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_HIGHMEM
818 select SYS_SUPPORTS_LITTLE_ENDIAN
819 select ZONE_DMA32 if 64BIT
821 config SIBYTE_SENTOSA
822 bool "Sibyte BCM91250E-Sentosa"
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_LITTLE_ENDIAN
832 bool "Sibyte BCM91480B-BigSur"
835 select NR_CPUS_DEFAULT_4
836 select SIBYTE_BCM1x80
838 select SYS_HAS_CPU_SB1
839 select SYS_SUPPORTS_BIG_ENDIAN
840 select SYS_SUPPORTS_HIGHMEM
841 select SYS_SUPPORTS_LITTLE_ENDIAN
842 select ZONE_DMA32 if 64BIT
845 bool "SNI RM200/300/400"
846 select FW_ARC if CPU_LITTLE_ENDIAN
847 select FW_ARC32 if CPU_LITTLE_ENDIAN
848 select FW_SNIPROM if CPU_BIG_ENDIAN
849 select ARCH_MAY_HAVE_PC_FDC
853 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
854 select DMA_NONCOHERENT
855 select GENERIC_ISA_DMA
856 select HAVE_PCSPKR_PLATFORM
863 select MIPS_L1_CACHE_SHIFT_6
864 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
865 select SYS_HAS_CPU_R4X00
866 select SYS_HAS_CPU_R5000
867 select SYS_HAS_CPU_R10000
868 select R5000_CPU_SCACHE
869 select SYS_HAS_EARLY_PRINTK
870 select SYS_SUPPORTS_32BIT_KERNEL
871 select SYS_SUPPORTS_64BIT_KERNEL
872 select SYS_SUPPORTS_BIG_ENDIAN
873 select SYS_SUPPORTS_HIGHMEM
874 select SYS_SUPPORTS_LITTLE_ENDIAN
876 The SNI RM200/300/400 are MIPS-based machines manufactured by
877 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
878 Technology and now in turn merged with Fujitsu. Say Y here to
879 support this machine type.
882 bool "Toshiba TX39 series based machines"
885 bool "Toshiba TX49 series based machines"
887 config MIKROTIK_RB532
888 bool "Mikrotik RB532 boards"
891 select DMA_NONCOHERENT
894 select SYS_HAS_CPU_MIPS32_R1
895 select SYS_SUPPORTS_32BIT_KERNEL
896 select SYS_SUPPORTS_LITTLE_ENDIAN
900 select MIPS_L1_CACHE_SHIFT_4
902 Support the Mikrotik(tm) RouterBoard 532 series,
903 based on the IDT RC32434 SoC.
905 config CAVIUM_OCTEON_SOC
906 bool "Cavium Networks Octeon SoC based boards"
908 select ARCH_PHYS_ADDR_T_64BIT
910 select SYS_SUPPORTS_64BIT_KERNEL
911 select SYS_SUPPORTS_BIG_ENDIAN
913 select EDAC_ATOMIC_SCRUB
914 select SYS_SUPPORTS_LITTLE_ENDIAN
915 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
916 select SYS_HAS_EARLY_PRINTK
917 select SYS_HAS_CPU_CAVIUM_OCTEON
924 select ARCH_SPARSEMEM_ENABLE
925 select SYS_SUPPORTS_SMP
926 select NR_CPUS_DEFAULT_16
928 select MTD_COMPLEX_MAPPINGS
929 select SYS_SUPPORTS_RELOCATABLE
931 This option supports all of the Octeon reference boards from Cavium
932 Networks. It builds a kernel that dynamically determines the Octeon
933 CPU type and supports all known board reference implementations.
934 Some of the supported boards are:
941 Say Y here for most Octeon reference boards.
944 bool "Netlogic XLR/XLS based systems"
947 select SYS_HAS_CPU_XLR
948 select SYS_SUPPORTS_SMP
951 select SYS_SUPPORTS_32BIT_KERNEL
952 select SYS_SUPPORTS_64BIT_KERNEL
953 select ARCH_PHYS_ADDR_T_64BIT
954 select SYS_SUPPORTS_BIG_ENDIAN
955 select SYS_SUPPORTS_HIGHMEM
957 select NR_CPUS_DEFAULT_32
961 select ZONE_DMA32 if 64BIT
963 select SYS_HAS_EARLY_PRINTK
964 select SYS_SUPPORTS_ZBOOT
965 select SYS_SUPPORTS_ZBOOT_UART16550
967 Support for systems based on Netlogic XLR and XLS processors.
968 Say Y here if you have a XLR or XLS based board.
971 bool "Netlogic XLP based systems"
974 select SYS_HAS_CPU_XLP
975 select SYS_SUPPORTS_SMP
977 select SYS_SUPPORTS_32BIT_KERNEL
978 select SYS_SUPPORTS_64BIT_KERNEL
979 select ARCH_PHYS_ADDR_T_64BIT
981 select SYS_SUPPORTS_BIG_ENDIAN
982 select SYS_SUPPORTS_LITTLE_ENDIAN
983 select SYS_SUPPORTS_HIGHMEM
985 select NR_CPUS_DEFAULT_32
989 select ZONE_DMA32 if 64BIT
991 select SYS_HAS_EARLY_PRINTK
993 select SYS_SUPPORTS_ZBOOT
994 select SYS_SUPPORTS_ZBOOT_UART16550
996 This board is based on Netlogic XLP Processor.
997 Say Y here if you have a XLP based board.
1000 bool "Para-Virtualized guest system"
1004 select SYS_SUPPORTS_64BIT_KERNEL
1005 select SYS_SUPPORTS_32BIT_KERNEL
1006 select SYS_SUPPORTS_BIG_ENDIAN
1007 select SYS_SUPPORTS_SMP
1008 select NR_CPUS_DEFAULT_4
1009 select SYS_HAS_EARLY_PRINTK
1010 select SYS_HAS_CPU_MIPS32_R2
1011 select SYS_HAS_CPU_MIPS64_R2
1012 select SYS_HAS_CPU_CAVIUM_OCTEON
1014 select SWAP_IO_SPACE
1016 This option supports guest running under ????
1020 source "arch/mips/alchemy/Kconfig"
1021 source "arch/mips/ath25/Kconfig"
1022 source "arch/mips/ath79/Kconfig"
1023 source "arch/mips/bcm47xx/Kconfig"
1024 source "arch/mips/bcm63xx/Kconfig"
1025 source "arch/mips/bmips/Kconfig"
1026 source "arch/mips/generic/Kconfig"
1027 source "arch/mips/jazz/Kconfig"
1028 source "arch/mips/jz4740/Kconfig"
1029 source "arch/mips/lantiq/Kconfig"
1030 source "arch/mips/lasat/Kconfig"
1031 source "arch/mips/pic32/Kconfig"
1032 source "arch/mips/pistachio/Kconfig"
1033 source "arch/mips/pmcs-msp71xx/Kconfig"
1034 source "arch/mips/ralink/Kconfig"
1035 source "arch/mips/sgi-ip27/Kconfig"
1036 source "arch/mips/sibyte/Kconfig"
1037 source "arch/mips/txx9/Kconfig"
1038 source "arch/mips/vr41xx/Kconfig"
1039 source "arch/mips/cavium-octeon/Kconfig"
1040 source "arch/mips/loongson32/Kconfig"
1041 source "arch/mips/loongson64/Kconfig"
1042 source "arch/mips/netlogic/Kconfig"
1043 source "arch/mips/paravirt/Kconfig"
1044 source "arch/mips/xilfpga/Kconfig"
1048 config RWSEM_GENERIC_SPINLOCK
1052 config RWSEM_XCHGADD_ALGORITHM
1055 config GENERIC_HWEIGHT
1059 config GENERIC_CALIBRATE_DELAY
1063 config SCHED_OMIT_FRAME_POINTER
1068 # Select some configuration options automatically based on user selections.
1073 config ARCH_MAY_HAVE_PC_FDC
1109 config MIPS_CLOCK_VSYSCALL
1110 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1119 config ARCH_DMA_ADDR_T_64BIT
1120 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1122 config ARCH_SUPPORTS_UPROBES
1125 config DMA_MAYBE_COHERENT
1126 select DMA_NONCOHERENT
1129 config DMA_PERDEV_COHERENT
1131 select DMA_MAYBE_COHERENT
1136 config DMA_NONCOHERENT
1138 select NEED_DMA_MAP_STATE
1140 config NEED_DMA_MAP_STATE
1143 config SYS_HAS_EARLY_PRINTK
1146 config SYS_SUPPORTS_HOTPLUG_CPU
1149 config MIPS_BONITO64
1164 config NO_IOPORT_MAP
1170 config GENERIC_ISA_DMA
1172 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1175 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1177 select GENERIC_ISA_DMA
1182 config HOLES_IN_ZONE
1185 config SYS_SUPPORTS_RELOCATABLE
1188 Selected if the platform supports relocating the kernel.
1189 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1190 to allow access to command line and entropy sources.
1192 config MIPS_CBPF_JIT
1194 depends on BPF_JIT && HAVE_CBPF_JIT
1196 config MIPS_EBPF_JIT
1198 depends on BPF_JIT && HAVE_EBPF_JIT
1202 # Endianness selection. Sufficiently obscure so many users don't know what to
1203 # answer,so we try hard to limit the available choices. Also the use of a
1204 # choice statement should be more obvious to the user.
1207 prompt "Endianness selection"
1209 Some MIPS machines can be configured for either little or big endian
1210 byte order. These modes require different kernels and a different
1211 Linux distribution. In general there is one preferred byteorder for a
1212 particular system but some systems are just as commonly used in the
1213 one or the other endianness.
1215 config CPU_BIG_ENDIAN
1217 depends on SYS_SUPPORTS_BIG_ENDIAN
1219 config CPU_LITTLE_ENDIAN
1220 bool "Little endian"
1221 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1228 config SYS_SUPPORTS_APM_EMULATION
1231 config SYS_SUPPORTS_BIG_ENDIAN
1234 config SYS_SUPPORTS_LITTLE_ENDIAN
1237 config SYS_SUPPORTS_HUGETLBFS
1239 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1242 config MIPS_HUGE_TLB_SUPPORT
1243 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1260 config PCI_GT64XXX_PCI0
1263 config NO_EXCEPT_FILL
1270 select DMA_NONCOHERENT
1272 select SWAP_IO_SPACE
1273 select SYS_HAS_CPU_R5500
1274 select SYS_SUPPORTS_32BIT_KERNEL
1275 select SYS_SUPPORTS_64BIT_KERNEL
1276 select SYS_SUPPORTS_BIG_ENDIAN
1283 select DMA_NONCOHERENT
1284 select SYS_HAS_CPU_MIPS32_R2
1285 select SYS_SUPPORTS_32BIT_KERNEL
1286 select SYS_SUPPORTS_LITTLE_ENDIAN
1287 select SYS_SUPPORTS_BIG_ENDIAN
1288 select SYS_SUPPORTS_MIPS16
1289 select CPU_MIPSR2_IRQ_VI
1298 config SWAP_IO_SPACE
1301 config SGI_HAS_INDYDOG
1313 config SGI_HAS_ZILOG
1316 config SGI_HAS_I8042
1319 config DEFAULT_SGI_PARTITION
1331 config MIPS_L1_CACHE_SHIFT_4
1334 config MIPS_L1_CACHE_SHIFT_5
1337 config MIPS_L1_CACHE_SHIFT_6
1340 config MIPS_L1_CACHE_SHIFT_7
1343 config MIPS_L1_CACHE_SHIFT
1345 default "7" if MIPS_L1_CACHE_SHIFT_7
1346 default "6" if MIPS_L1_CACHE_SHIFT_6
1347 default "5" if MIPS_L1_CACHE_SHIFT_5
1348 default "4" if MIPS_L1_CACHE_SHIFT_4
1351 config HAVE_STD_PC_SERIAL_PORT
1355 bool "ARC console support"
1356 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1360 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1365 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1374 menu "CPU selection"
1380 config CPU_LOONGSON3
1381 bool "Loongson 3 CPU"
1382 depends on SYS_HAS_CPU_LOONGSON3
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select CPU_SUPPORTS_HIGHMEM
1385 select CPU_SUPPORTS_HUGEPAGES
1386 select WEAK_ORDERING
1387 select WEAK_REORDERING_BEYOND_LLSC
1388 select MIPS_PGD_C0_CONTEXT
1389 select MIPS_L1_CACHE_SHIFT_6
1390 select MIPS_FP_SUPPORT
1393 The Loongson 3 processor implements the MIPS64R2 instruction
1394 set with many extensions.
1396 config LOONGSON3_ENHANCEMENT
1397 bool "New Loongson 3 CPU Enhancements"
1400 select CPU_HAS_PREFETCH
1401 depends on CPU_LOONGSON3
1403 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1404 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1405 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1406 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1407 Fast TLB refill support, etc.
1409 This option enable those enhancements which are not probed at run
1410 time. If you want a generic kernel to run on all Loongson 3 machines,
1411 please say 'N' here. If you want a high-performance kernel to run on
1412 new Loongson 3 machines only, please say 'Y' here.
1414 config CPU_LOONGSON2E
1416 depends on SYS_HAS_CPU_LOONGSON2E
1417 select CPU_LOONGSON2
1419 The Loongson 2E processor implements the MIPS III instruction set
1420 with many extensions.
1422 It has an internal FPGA northbridge, which is compatible to
1425 config CPU_LOONGSON2F
1427 depends on SYS_HAS_CPU_LOONGSON2F
1428 select CPU_LOONGSON2
1431 The Loongson 2F processor implements the MIPS III instruction set
1432 with many extensions.
1434 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1435 have a similar programming interface with FPGA northbridge used in
1438 config CPU_LOONGSON1B
1440 depends on SYS_HAS_CPU_LOONGSON1B
1441 select CPU_LOONGSON1
1442 select LEDS_GPIO_REGISTER
1444 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1445 release 2 instruction set.
1447 config CPU_LOONGSON1C
1449 depends on SYS_HAS_CPU_LOONGSON1C
1450 select CPU_LOONGSON1
1451 select LEDS_GPIO_REGISTER
1453 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1454 release 2 instruction set.
1456 config CPU_MIPS32_R1
1457 bool "MIPS32 Release 1"
1458 depends on SYS_HAS_CPU_MIPS32_R1
1459 select CPU_HAS_PREFETCH
1460 select CPU_SUPPORTS_32BIT_KERNEL
1461 select CPU_SUPPORTS_HIGHMEM
1463 Choose this option to build a kernel for release 1 or later of the
1464 MIPS32 architecture. Most modern embedded systems with a 32-bit
1465 MIPS processor are based on a MIPS32 processor. If you know the
1466 specific type of processor in your system, choose those that one
1467 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1468 Release 2 of the MIPS32 architecture is available since several
1469 years so chances are you even have a MIPS32 Release 2 processor
1470 in which case you should choose CPU_MIPS32_R2 instead for better
1473 config CPU_MIPS32_R2
1474 bool "MIPS32 Release 2"
1475 depends on SYS_HAS_CPU_MIPS32_R2
1476 select CPU_HAS_PREFETCH
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_HIGHMEM
1479 select CPU_SUPPORTS_MSA
1482 Choose this option to build a kernel for release 2 or later of the
1483 MIPS32 architecture. Most modern embedded systems with a 32-bit
1484 MIPS processor are based on a MIPS32 processor. If you know the
1485 specific type of processor in your system, choose those that one
1486 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1488 config CPU_MIPS32_R6
1489 bool "MIPS32 Release 6"
1490 depends on SYS_HAS_CPU_MIPS32_R6
1491 select CPU_HAS_PREFETCH
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_HIGHMEM
1494 select CPU_SUPPORTS_MSA
1497 select MIPS_O32_FP64_SUPPORT
1499 Choose this option to build a kernel for release 6 or later of the
1500 MIPS32 architecture. New MIPS processors, starting with the Warrior
1501 family, are based on a MIPS32r6 processor. If you own an older
1502 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1504 config CPU_MIPS64_R1
1505 bool "MIPS64 Release 1"
1506 depends on SYS_HAS_CPU_MIPS64_R1
1507 select CPU_HAS_PREFETCH
1508 select CPU_SUPPORTS_32BIT_KERNEL
1509 select CPU_SUPPORTS_64BIT_KERNEL
1510 select CPU_SUPPORTS_HIGHMEM
1511 select CPU_SUPPORTS_HUGEPAGES
1513 Choose this option to build a kernel for release 1 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.
1518 Release 2 of the MIPS64 architecture is available since several
1519 years so chances are you even have a MIPS64 Release 2 processor
1520 in which case you should choose CPU_MIPS64_R2 instead for better
1523 config CPU_MIPS64_R2
1524 bool "MIPS64 Release 2"
1525 depends on SYS_HAS_CPU_MIPS64_R2
1526 select CPU_HAS_PREFETCH
1527 select CPU_SUPPORTS_32BIT_KERNEL
1528 select CPU_SUPPORTS_64BIT_KERNEL
1529 select CPU_SUPPORTS_HIGHMEM
1530 select CPU_SUPPORTS_HUGEPAGES
1531 select CPU_SUPPORTS_MSA
1534 Choose this option to build a kernel for release 2 or later of the
1535 MIPS64 architecture. Many modern embedded systems with a 64-bit
1536 MIPS processor are based on a MIPS64 processor. If you know the
1537 specific type of processor in your system, choose those that one
1538 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1540 config CPU_MIPS64_R6
1541 bool "MIPS64 Release 6"
1542 depends on SYS_HAS_CPU_MIPS64_R6
1543 select CPU_HAS_PREFETCH
1544 select CPU_SUPPORTS_32BIT_KERNEL
1545 select CPU_SUPPORTS_64BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1547 select CPU_SUPPORTS_MSA
1549 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1552 Choose this option to build a kernel for release 6 or later of the
1553 MIPS64 architecture. New MIPS processors, starting with the Warrior
1554 family, are based on a MIPS64r6 processor. If you own an older
1555 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1559 depends on SYS_HAS_CPU_R3000
1561 select CPU_SUPPORTS_32BIT_KERNEL
1562 select CPU_SUPPORTS_HIGHMEM
1564 Please make sure to pick the right CPU type. Linux/MIPS is not
1565 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1566 *not* work on R4000 machines and vice versa. However, since most
1567 of the supported machines have an R4000 (or similar) CPU, R4x00
1568 might be a safe bet. If the resulting kernel does not work,
1569 try to recompile with R3000.
1573 depends on SYS_HAS_CPU_TX39XX
1574 select CPU_SUPPORTS_32BIT_KERNEL
1578 depends on SYS_HAS_CPU_VR41XX
1579 select CPU_SUPPORTS_32BIT_KERNEL
1580 select CPU_SUPPORTS_64BIT_KERNEL
1582 The options selects support for the NEC VR4100 series of processors.
1583 Only choose this option if you have one of these processors as a
1584 kernel built with this option will not run on any other type of
1585 processor or vice versa.
1589 depends on SYS_HAS_CPU_R4300
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1593 MIPS Technologies R4300-series processors.
1597 depends on SYS_HAS_CPU_R4X00
1598 select CPU_SUPPORTS_32BIT_KERNEL
1599 select CPU_SUPPORTS_64BIT_KERNEL
1600 select CPU_SUPPORTS_HUGEPAGES
1602 MIPS Technologies R4000-series processors other than 4300, including
1603 the R4000, R4400, R4600, and 4700.
1607 depends on SYS_HAS_CPU_TX49XX
1608 select CPU_HAS_PREFETCH
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1615 depends on SYS_HAS_CPU_R5000
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1620 MIPS Technologies R5000-series processors other than the Nevada.
1624 depends on SYS_HAS_CPU_R5432
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HUGEPAGES
1631 depends on SYS_HAS_CPU_R5500
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1634 select CPU_SUPPORTS_HUGEPAGES
1636 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1641 depends on SYS_HAS_CPU_NEVADA
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_64BIT_KERNEL
1644 select CPU_SUPPORTS_HUGEPAGES
1646 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1650 depends on SYS_HAS_CPU_R8000
1651 select CPU_HAS_PREFETCH
1652 select CPU_SUPPORTS_64BIT_KERNEL
1654 MIPS Technologies R8000 processors. Note these processors are
1655 uncommon and the support for them is incomplete.
1659 depends on SYS_HAS_CPU_R10000
1660 select CPU_HAS_PREFETCH
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_SUPPORTS_64BIT_KERNEL
1663 select CPU_SUPPORTS_HIGHMEM
1664 select CPU_SUPPORTS_HUGEPAGES
1666 MIPS Technologies R10000-series processors.
1670 depends on SYS_HAS_CPU_RM7000
1671 select CPU_HAS_PREFETCH
1672 select CPU_SUPPORTS_32BIT_KERNEL
1673 select CPU_SUPPORTS_64BIT_KERNEL
1674 select CPU_SUPPORTS_HIGHMEM
1675 select CPU_SUPPORTS_HUGEPAGES
1679 depends on SYS_HAS_CPU_SB1
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_64BIT_KERNEL
1682 select CPU_SUPPORTS_HIGHMEM
1683 select CPU_SUPPORTS_HUGEPAGES
1684 select WEAK_ORDERING
1686 config CPU_CAVIUM_OCTEON
1687 bool "Cavium Octeon processor"
1688 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1689 select CPU_HAS_PREFETCH
1690 select CPU_SUPPORTS_64BIT_KERNEL
1691 select WEAK_ORDERING
1692 select CPU_SUPPORTS_HIGHMEM
1693 select CPU_SUPPORTS_HUGEPAGES
1694 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1695 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1696 select MIPS_L1_CACHE_SHIFT_7
1699 The Cavium Octeon processor is a highly integrated chip containing
1700 many ethernet hardware widgets for networking tasks. The processor
1701 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1702 Full details can be found at http://www.caviumnetworks.com.
1705 bool "Broadcom BMIPS"
1706 depends on SYS_HAS_CPU_BMIPS
1708 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1709 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1710 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1711 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1712 select CPU_SUPPORTS_32BIT_KERNEL
1713 select DMA_NONCOHERENT
1715 select SWAP_IO_SPACE
1716 select WEAK_ORDERING
1717 select CPU_SUPPORTS_HIGHMEM
1718 select CPU_HAS_PREFETCH
1719 select CPU_SUPPORTS_CPUFREQ
1720 select MIPS_EXTERNAL_TIMER
1722 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1725 bool "Netlogic XLR SoC"
1726 depends on SYS_HAS_CPU_XLR
1727 select CPU_SUPPORTS_32BIT_KERNEL
1728 select CPU_SUPPORTS_64BIT_KERNEL
1729 select CPU_SUPPORTS_HIGHMEM
1730 select CPU_SUPPORTS_HUGEPAGES
1731 select WEAK_ORDERING
1732 select WEAK_REORDERING_BEYOND_LLSC
1734 Netlogic Microsystems XLR/XLS processors.
1737 bool "Netlogic XLP SoC"
1738 depends on SYS_HAS_CPU_XLP
1739 select CPU_SUPPORTS_32BIT_KERNEL
1740 select CPU_SUPPORTS_64BIT_KERNEL
1741 select CPU_SUPPORTS_HIGHMEM
1742 select WEAK_ORDERING
1743 select WEAK_REORDERING_BEYOND_LLSC
1744 select CPU_HAS_PREFETCH
1746 select CPU_SUPPORTS_HUGEPAGES
1747 select MIPS_ASID_BITS_VARIABLE
1749 Netlogic Microsystems XLP processors.
1752 config CPU_MIPS32_3_5_FEATURES
1753 bool "MIPS32 Release 3.5 Features"
1754 depends on SYS_HAS_CPU_MIPS32_R3_5
1755 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1757 Choose this option to build a kernel for release 2 or later of the
1758 MIPS32 architecture including features from the 3.5 release such as
1759 support for Enhanced Virtual Addressing (EVA).
1761 config CPU_MIPS32_3_5_EVA
1762 bool "Enhanced Virtual Addressing (EVA)"
1763 depends on CPU_MIPS32_3_5_FEATURES
1767 Choose this option if you want to enable the Enhanced Virtual
1768 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1769 One of its primary benefits is an increase in the maximum size
1770 of lowmem (up to 3GB). If unsure, say 'N' here.
1772 config CPU_MIPS32_R5_FEATURES
1773 bool "MIPS32 Release 5 Features"
1774 depends on SYS_HAS_CPU_MIPS32_R5
1775 depends on CPU_MIPS32_R2
1777 Choose this option to build a kernel for release 2 or later of the
1778 MIPS32 architecture including features from release 5 such as
1779 support for Extended Physical Addressing (XPA).
1781 config CPU_MIPS32_R5_XPA
1782 bool "Extended Physical Addressing (XPA)"
1783 depends on CPU_MIPS32_R5_FEATURES
1785 depends on !PAGE_SIZE_4KB
1786 depends on SYS_SUPPORTS_HIGHMEM
1789 select ARCH_PHYS_ADDR_T_64BIT
1792 Choose this option if you want to enable the Extended Physical
1793 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1794 benefit is to increase physical addressing equal to or greater
1795 than 40 bits. Note that this has the side effect of turning on
1796 64-bit addressing which in turn makes the PTEs 64-bit in size.
1797 If unsure, say 'N' here.
1800 config CPU_NOP_WORKAROUNDS
1803 config CPU_JUMP_WORKAROUNDS
1806 config CPU_LOONGSON2F_WORKAROUNDS
1807 bool "Loongson 2F Workarounds"
1809 select CPU_NOP_WORKAROUNDS
1810 select CPU_JUMP_WORKAROUNDS
1812 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1813 require workarounds. Without workarounds the system may hang
1814 unexpectedly. For more information please refer to the gas
1815 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1817 Loongson 2F03 and later have fixed these issues and no workarounds
1818 are needed. The workarounds have no significant side effect on them
1819 but may decrease the performance of the system so this option should
1820 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1823 If unsure, please say Y.
1824 endif # CPU_LOONGSON2F
1826 config SYS_SUPPORTS_ZBOOT
1828 select HAVE_KERNEL_GZIP
1829 select HAVE_KERNEL_BZIP2
1830 select HAVE_KERNEL_LZ4
1831 select HAVE_KERNEL_LZMA
1832 select HAVE_KERNEL_LZO
1833 select HAVE_KERNEL_XZ
1835 config SYS_SUPPORTS_ZBOOT_UART16550
1837 select SYS_SUPPORTS_ZBOOT
1839 config SYS_SUPPORTS_ZBOOT_UART_PROM
1841 select SYS_SUPPORTS_ZBOOT
1843 config CPU_LOONGSON2
1845 select CPU_SUPPORTS_32BIT_KERNEL
1846 select CPU_SUPPORTS_64BIT_KERNEL
1847 select CPU_SUPPORTS_HIGHMEM
1848 select CPU_SUPPORTS_HUGEPAGES
1850 config CPU_LOONGSON1
1854 select CPU_HAS_PREFETCH
1855 select CPU_SUPPORTS_32BIT_KERNEL
1856 select CPU_SUPPORTS_HIGHMEM
1857 select CPU_SUPPORTS_CPUFREQ
1859 config CPU_BMIPS32_3300
1860 select SMP_UP if SMP
1863 config CPU_BMIPS4350
1865 select SYS_SUPPORTS_SMP
1866 select SYS_SUPPORTS_HOTPLUG_CPU
1868 config CPU_BMIPS4380
1870 select MIPS_L1_CACHE_SHIFT_6
1871 select SYS_SUPPORTS_SMP
1872 select SYS_SUPPORTS_HOTPLUG_CPU
1875 config CPU_BMIPS5000
1877 select MIPS_CPU_SCACHE
1878 select MIPS_L1_CACHE_SHIFT_7
1879 select SYS_SUPPORTS_SMP
1880 select SYS_SUPPORTS_HOTPLUG_CPU
1883 config SYS_HAS_CPU_LOONGSON3
1885 select CPU_SUPPORTS_CPUFREQ
1888 config SYS_HAS_CPU_LOONGSON2E
1891 config SYS_HAS_CPU_LOONGSON2F
1893 select CPU_SUPPORTS_CPUFREQ
1894 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1895 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1897 config SYS_HAS_CPU_LOONGSON1B
1900 config SYS_HAS_CPU_LOONGSON1C
1903 config SYS_HAS_CPU_MIPS32_R1
1906 config SYS_HAS_CPU_MIPS32_R2
1909 config SYS_HAS_CPU_MIPS32_R3_5
1912 config SYS_HAS_CPU_MIPS32_R5
1915 config SYS_HAS_CPU_MIPS32_R6
1918 config SYS_HAS_CPU_MIPS64_R1
1921 config SYS_HAS_CPU_MIPS64_R2
1924 config SYS_HAS_CPU_MIPS64_R6
1927 config SYS_HAS_CPU_R3000
1930 config SYS_HAS_CPU_TX39XX
1933 config SYS_HAS_CPU_VR41XX
1936 config SYS_HAS_CPU_R4300
1939 config SYS_HAS_CPU_R4X00
1942 config SYS_HAS_CPU_TX49XX
1945 config SYS_HAS_CPU_R5000
1948 config SYS_HAS_CPU_R5432
1951 config SYS_HAS_CPU_R5500
1954 config SYS_HAS_CPU_NEVADA
1957 config SYS_HAS_CPU_R8000
1960 config SYS_HAS_CPU_R10000
1963 config SYS_HAS_CPU_RM7000
1966 config SYS_HAS_CPU_SB1
1969 config SYS_HAS_CPU_CAVIUM_OCTEON
1972 config SYS_HAS_CPU_BMIPS
1975 config SYS_HAS_CPU_BMIPS32_3300
1977 select SYS_HAS_CPU_BMIPS
1979 config SYS_HAS_CPU_BMIPS4350
1981 select SYS_HAS_CPU_BMIPS
1983 config SYS_HAS_CPU_BMIPS4380
1985 select SYS_HAS_CPU_BMIPS
1987 config SYS_HAS_CPU_BMIPS5000
1989 select SYS_HAS_CPU_BMIPS
1991 config SYS_HAS_CPU_XLR
1994 config SYS_HAS_CPU_XLP
1997 config MIPS_MALTA_PM
1998 depends on MIPS_MALTA
2004 # CPU may reorder R->R, R->W, W->R, W->W
2005 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2007 config WEAK_ORDERING
2011 # CPU may reorder reads and writes beyond LL/SC
2012 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2014 config WEAK_REORDERING_BEYOND_LLSC
2019 # These two indicate any level of the MIPS32 and MIPS64 architecture
2023 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2027 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2030 # These two indicate the revision of the architecture, either Release 1 or Release 2
2034 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2038 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2044 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2046 select HAVE_ARCH_BITREVERSE
2047 select MIPS_ASID_BITS_VARIABLE
2056 config SYS_SUPPORTS_32BIT_KERNEL
2058 config SYS_SUPPORTS_64BIT_KERNEL
2060 config CPU_SUPPORTS_32BIT_KERNEL
2062 config CPU_SUPPORTS_64BIT_KERNEL
2064 config CPU_SUPPORTS_CPUFREQ
2066 config CPU_SUPPORTS_ADDRWINCFG
2068 config CPU_SUPPORTS_HUGEPAGES
2070 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2072 config MIPS_PGD_C0_CONTEXT
2074 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2077 # Set to y for ptrace access to watch registers.
2079 config HARDWARE_WATCHPOINTS
2081 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2086 prompt "Kernel code model"
2088 You should only select this option if you have a workload that
2089 actually benefits from 64-bit processing or if your machine has
2090 large memory. You will only be presented a single option in this
2091 menu if your system does not support both 32-bit and 64-bit kernels.
2094 bool "32-bit kernel"
2095 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2098 Select this option if you want to build a 32-bit kernel.
2101 bool "64-bit kernel"
2102 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2104 Select this option if you want to build a 64-bit kernel.
2109 bool "KVM Guest Kernel"
2110 depends on BROKEN_ON_SMP
2112 Select this option if building a guest kernel for KVM (Trap & Emulate)
2115 config KVM_GUEST_TIMER_FREQ
2116 int "Count/Compare Timer Frequency (MHz)"
2117 depends on KVM_GUEST
2120 Set this to non-zero if building a guest kernel for KVM to skip RTC
2121 emulation when determining guest CPU Frequency. Instead, the guest's
2122 timer frequency is specified directly.
2124 config MIPS_VA_BITS_48
2125 bool "48 bits virtual memory"
2128 Support a maximum at least 48 bits of application virtual
2129 memory. Default is 40 bits or less, depending on the CPU.
2130 For page sizes 16k and above, this option results in a small
2131 memory overhead for page tables. For 4k page size, a fourth
2132 level of page tables is added which imposes both a memory
2133 overhead as well as slower TLB fault handling.
2138 prompt "Kernel page size"
2139 default PAGE_SIZE_4KB
2141 config PAGE_SIZE_4KB
2143 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2145 This option select the standard 4kB Linux page size. On some
2146 R3000-family processors this is the only available page size. Using
2147 4kB page size will minimize memory consumption and is therefore
2148 recommended for low memory systems.
2150 config PAGE_SIZE_8KB
2152 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2153 depends on !MIPS_VA_BITS_48
2155 Using 8kB page size will result in higher performance kernel at
2156 the price of higher memory consumption. This option is available
2157 only on R8000 and cnMIPS processors. Note that you will need a
2158 suitable Linux distribution to support this.
2160 config PAGE_SIZE_16KB
2162 depends on !CPU_R3000 && !CPU_TX39XX
2164 Using 16kB page size will result in higher performance kernel at
2165 the price of higher memory consumption. This option is available on
2166 all non-R3000 family processors. Note that you will need a suitable
2167 Linux distribution to support this.
2169 config PAGE_SIZE_32KB
2171 depends on CPU_CAVIUM_OCTEON
2172 depends on !MIPS_VA_BITS_48
2174 Using 32kB page size will result in higher performance kernel at
2175 the price of higher memory consumption. This option is available
2176 only on cnMIPS cores. Note that you will need a suitable Linux
2177 distribution to support this.
2179 config PAGE_SIZE_64KB
2181 depends on !CPU_R3000 && !CPU_TX39XX
2183 Using 64kB page size will result in higher performance kernel at
2184 the price of higher memory consumption. This option is available on
2185 all non-R3000 family processor. Not that at the time of this
2186 writing this option is still high experimental.
2190 config FORCE_MAX_ZONEORDER
2191 int "Maximum zone order"
2192 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2193 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2194 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2195 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2196 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2197 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2201 The kernel memory allocator divides physically contiguous memory
2202 blocks into "zones", where each zone is a power of two number of
2203 pages. This option selects the largest power of two that the kernel
2204 keeps in the memory allocator. If you need to allocate very large
2205 blocks of physically contiguous memory, then you may need to
2206 increase this value.
2208 This config option is actually maximum order plus one. For example,
2209 a value of 11 means that the largest free memory block is 2^10 pages.
2211 The page size is not necessarily 4KB. Keep this in mind
2212 when choosing a value for this option.
2217 config IP22_CPU_SCACHE
2222 # Support for a MIPS32 / MIPS64 style S-caches
2224 config MIPS_CPU_SCACHE
2228 config R5000_CPU_SCACHE
2232 config RM7000_CPU_SCACHE
2236 config SIBYTE_DMA_PAGEOPS
2237 bool "Use DMA to clear/copy pages"
2240 Instead of using the CPU to zero and copy pages, use a Data Mover
2241 channel. These DMA channels are otherwise unused by the standard
2242 SiByte Linux port. Seems to give a small performance benefit.
2244 config CPU_HAS_PREFETCH
2247 config CPU_GENERIC_DUMP_TLB
2249 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2253 default y if !(CPU_R3000 || CPU_TX39XX)
2255 config CPU_R4K_CACHE_TLB
2257 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2260 bool "MIPS MT SMP support (1 TC on each available VPE)"
2262 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2263 select CPU_MIPSR2_IRQ_VI
2264 select CPU_MIPSR2_IRQ_EI
2269 select SYS_SUPPORTS_SMP
2270 select SYS_SUPPORTS_SCHED_SMT
2271 select MIPS_PERF_SHARED_TC_COUNTERS
2273 This is a kernel model which is known as SMVP. This is supported
2274 on cores with the MT ASE and uses the available VPEs to implement
2275 virtual processors which supports SMP. This is equivalent to the
2276 Intel Hyperthreading feature. For further information go to
2277 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2283 bool "SMT (multithreading) scheduler support"
2284 depends on SYS_SUPPORTS_SCHED_SMT
2287 SMT scheduler support improves the CPU scheduler's decision making
2288 when dealing with MIPS MT enabled cores at a cost of slightly
2289 increased overhead in some places. If unsure say N here.
2291 config SYS_SUPPORTS_SCHED_SMT
2294 config SYS_SUPPORTS_MULTITHREADING
2297 config MIPS_MT_FPAFF
2298 bool "Dynamic FPU affinity for FP-intensive threads"
2300 depends on MIPS_MT_SMP
2302 config MIPSR2_TO_R6_EMULATOR
2303 bool "MIPS R2-to-R6 emulator"
2304 depends on CPU_MIPSR6
2307 Choose this option if you want to run non-R6 MIPS userland code.
2308 Even if you say 'Y' here, the emulator will still be disabled by
2309 default. You can enable it using the 'mipsr2emu' kernel option.
2310 The only reason this is a build-time option is to save ~14K from the
2313 config MIPS_VPE_LOADER
2314 bool "VPE loader support."
2315 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2316 select CPU_MIPSR2_IRQ_VI
2317 select CPU_MIPSR2_IRQ_EI
2320 Includes a loader for loading an elf relocatable object
2321 onto another VPE and running it.
2323 config MIPS_VPE_LOADER_CMP
2326 depends on MIPS_VPE_LOADER && MIPS_CMP
2328 config MIPS_VPE_LOADER_MT
2331 depends on MIPS_VPE_LOADER && !MIPS_CMP
2333 config MIPS_VPE_LOADER_TOM
2334 bool "Load VPE program into memory hidden from linux"
2335 depends on MIPS_VPE_LOADER
2338 The loader can use memory that is present but has been hidden from
2339 Linux using the kernel command line option "mem=xxMB". It's up to
2340 you to ensure the amount you put in the option and the space your
2341 program requires is less or equal to the amount physically present.
2343 config MIPS_VPE_APSP_API
2344 bool "Enable support for AP/SP API (RTLX)"
2345 depends on MIPS_VPE_LOADER
2348 config MIPS_VPE_APSP_API_CMP
2351 depends on MIPS_VPE_APSP_API && MIPS_CMP
2353 config MIPS_VPE_APSP_API_MT
2356 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2359 bool "MIPS CMP framework support (DEPRECATED)"
2360 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2363 select SYS_SUPPORTS_SMP
2364 select WEAK_ORDERING
2367 Select this if you are using a bootloader which implements the "CMP
2368 framework" protocol (ie. YAMON) and want your kernel to make use of
2369 its ability to start secondary CPUs.
2371 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2375 bool "MIPS Coherent Processing System support"
2376 depends on SYS_SUPPORTS_MIPS_CPS
2378 select MIPS_CPS_PM if HOTPLUG_CPU
2380 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2381 select SYS_SUPPORTS_HOTPLUG_CPU
2382 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2383 select SYS_SUPPORTS_SMP
2384 select WEAK_ORDERING
2386 Select this if you wish to run an SMP kernel across multiple cores
2387 within a MIPS Coherent Processing System. When this option is
2388 enabled the kernel will probe for other cores and boot them with
2389 no external assistance. It is safe to enable this when hardware
2390 support is unavailable.
2403 config SB1_PASS_2_WORKAROUNDS
2405 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2408 config SB1_PASS_2_1_WORKAROUNDS
2410 depends on CPU_SB1 && CPU_SB1_PASS_2
2414 config ARCH_PHYS_ADDR_T_64BIT
2418 prompt "SmartMIPS or microMIPS ASE support"
2420 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2423 Select this if you want neither microMIPS nor SmartMIPS support
2425 config CPU_HAS_SMARTMIPS
2426 depends on SYS_SUPPORTS_SMARTMIPS
2429 SmartMIPS is a extension of the MIPS32 architecture aimed at
2430 increased security at both hardware and software level for
2431 smartcards. Enabling this option will allow proper use of the
2432 SmartMIPS instructions by Linux applications. However a kernel with
2433 this option will not work on a MIPS core without SmartMIPS core. If
2434 you don't know you probably don't have SmartMIPS and should say N
2437 config CPU_MICROMIPS
2438 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2441 When this option is enabled the kernel will be built using the
2447 bool "Support for the MIPS SIMD Architecture"
2448 depends on CPU_SUPPORTS_MSA
2449 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2451 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2452 and a set of SIMD instructions to operate on them. When this option
2453 is enabled the kernel will support allocating & switching MSA
2454 vector register contexts. If you know that your kernel will only be
2455 running on CPUs which do not support MSA or that your userland will
2456 not be making use of it then you may wish to say N here to reduce
2457 the size & complexity of your kernel.
2471 # Vectored interrupt mode is an R2 feature
2473 config CPU_MIPSR2_IRQ_VI
2477 # Extended interrupt mode is an R2 feature
2479 config CPU_MIPSR2_IRQ_EI
2484 depends on !CPU_R3000
2490 config CPU_DADDI_WORKAROUNDS
2493 config CPU_R4000_WORKAROUNDS
2495 select CPU_R4400_WORKAROUNDS
2497 config CPU_R4400_WORKAROUNDS
2500 config MIPS_ASID_SHIFT
2502 default 6 if CPU_R3000 || CPU_TX39XX
2503 default 4 if CPU_R8000
2506 config MIPS_ASID_BITS
2508 default 0 if MIPS_ASID_BITS_VARIABLE
2509 default 6 if CPU_R3000 || CPU_TX39XX
2512 config MIPS_ASID_BITS_VARIABLE
2516 # - Highmem only makes sense for the 32-bit kernel.
2517 # - The current highmem code will only work properly on physically indexed
2518 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2519 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2520 # moment we protect the user and offer the highmem option only on machines
2521 # where it's known to be safe. This will not offer highmem on a few systems
2522 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2523 # indexed CPUs but we're playing safe.
2524 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2525 # know they might have memory configurations that could make use of highmem
2529 bool "High Memory Support"
2530 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2532 config CPU_SUPPORTS_HIGHMEM
2535 config SYS_SUPPORTS_HIGHMEM
2538 config SYS_SUPPORTS_SMARTMIPS
2541 config SYS_SUPPORTS_MICROMIPS
2544 config SYS_SUPPORTS_MIPS16
2547 This option must be set if a kernel might be executed on a MIPS16-
2548 enabled CPU even if MIPS16 is not actually being used. In other
2549 words, it makes the kernel MIPS16-tolerant.
2551 config CPU_SUPPORTS_MSA
2554 config ARCH_FLATMEM_ENABLE
2556 depends on !NUMA && !CPU_LOONGSON2
2558 config ARCH_DISCONTIGMEM_ENABLE
2560 default y if SGI_IP27
2562 Say Y to support efficient handling of discontiguous physical memory,
2563 for architectures which are either NUMA (Non-Uniform Memory Access)
2564 or have huge holes in the physical address space for other reasons.
2565 See <file:Documentation/vm/numa> for more.
2567 config ARCH_SPARSEMEM_ENABLE
2569 select SPARSEMEM_STATIC
2573 depends on SYS_SUPPORTS_NUMA
2575 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2576 Access). This option improves performance on systems with more
2577 than two nodes; on two node systems it is generally better to
2578 leave it disabled; on single node systems disable this option
2581 config SYS_SUPPORTS_NUMA
2585 bool "Relocatable kernel"
2586 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2588 This builds a kernel image that retains relocation information
2589 so it can be loaded someplace besides the default 1MB.
2590 The relocations make the kernel binary about 15% larger,
2591 but are discarded at runtime
2593 config RELOCATION_TABLE_SIZE
2594 hex "Relocation table size"
2595 depends on RELOCATABLE
2596 range 0x0 0x01000000
2597 default "0x00100000"
2599 A table of relocation data will be appended to the kernel binary
2600 and parsed at boot to fix up the relocated kernel.
2602 This option allows the amount of space reserved for the table to be
2603 adjusted, although the default of 1Mb should be ok in most cases.
2605 The build will fail and a valid size suggested if this is too small.
2607 If unsure, leave at the default value.
2609 config RANDOMIZE_BASE
2610 bool "Randomize the address of the kernel image"
2611 depends on RELOCATABLE
2613 Randomizes the physical and virtual address at which the
2614 kernel image is loaded, as a security feature that
2615 deters exploit attempts relying on knowledge of the location
2616 of kernel internals.
2618 Entropy is generated using any coprocessor 0 registers available.
2620 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2624 config RANDOMIZE_BASE_MAX_OFFSET
2625 hex "Maximum kASLR offset" if EXPERT
2626 depends on RANDOMIZE_BASE
2627 range 0x0 0x40000000 if EVA || 64BIT
2628 range 0x0 0x08000000
2629 default "0x01000000"
2631 When kASLR is active, this provides the maximum offset that will
2632 be applied to the kernel image. It should be set according to the
2633 amount of physical RAM available in the target system minus
2634 PHYSICAL_START and must be a power of 2.
2636 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2637 EVA or 64-bit. The default is 16Mb.
2642 depends on NEED_MULTIPLE_NODES
2644 config HW_PERF_EVENTS
2645 bool "Enable hardware performance counter support for perf events"
2646 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2649 Enable hardware performance counter support for perf events. If
2650 disabled, perf events will use software events only.
2655 bool "Multi-Processing support"
2656 depends on SYS_SUPPORTS_SMP
2658 This enables support for systems with more than one CPU. If you have
2659 a system with only one CPU, say N. If you have a system with more
2660 than one CPU, say Y.
2662 If you say N here, the kernel will run on uni- and multiprocessor
2663 machines, but will use only one CPU of a multiprocessor machine. If
2664 you say Y here, the kernel will run on many, but not all,
2665 uniprocessor machines. On a uniprocessor machine, the kernel
2666 will run faster if you say N here.
2668 People using multiprocessor machines who say Y here should also say
2669 Y to "Enhanced Real Time Clock Support", below.
2671 See also the SMP-HOWTO available at
2672 <http://www.tldp.org/docs.html#howto>.
2674 If you don't know what to do here, say N.
2677 bool "Support for hot-pluggable CPUs"
2678 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2680 Say Y here to allow turning CPUs off and on. CPUs can be
2681 controlled through /sys/devices/system/cpu.
2682 (Note: power management support will enable this option
2683 automatically on SMP systems. )
2684 Say N if you want to disable CPU hotplug.
2689 config SYS_SUPPORTS_MIPS_CMP
2692 config SYS_SUPPORTS_MIPS_CPS
2695 config SYS_SUPPORTS_SMP
2698 config NR_CPUS_DEFAULT_4
2701 config NR_CPUS_DEFAULT_8
2704 config NR_CPUS_DEFAULT_16
2707 config NR_CPUS_DEFAULT_32
2710 config NR_CPUS_DEFAULT_64
2714 int "Maximum number of CPUs (2-256)"
2717 default "4" if NR_CPUS_DEFAULT_4
2718 default "8" if NR_CPUS_DEFAULT_8
2719 default "16" if NR_CPUS_DEFAULT_16
2720 default "32" if NR_CPUS_DEFAULT_32
2721 default "64" if NR_CPUS_DEFAULT_64
2723 This allows you to specify the maximum number of CPUs which this
2724 kernel will support. The maximum supported value is 32 for 32-bit
2725 kernel and 64 for 64-bit kernels; the minimum value which makes
2726 sense is 1 for Qemu (useful only for kernel debugging purposes)
2727 and 2 for all others.
2729 This is purely to save memory - each supported CPU adds
2730 approximately eight kilobytes to the kernel image. For best
2731 performance should round up your number of processors to the next
2734 config MIPS_PERF_SHARED_TC_COUNTERS
2738 # Timer Interrupt Frequency Configuration
2742 prompt "Timer frequency"
2745 Allows the configuration of the timer frequency.
2748 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2751 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2754 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2757 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2760 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2763 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2766 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2769 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2773 config SYS_SUPPORTS_24HZ
2776 config SYS_SUPPORTS_48HZ
2779 config SYS_SUPPORTS_100HZ
2782 config SYS_SUPPORTS_128HZ
2785 config SYS_SUPPORTS_250HZ
2788 config SYS_SUPPORTS_256HZ
2791 config SYS_SUPPORTS_1000HZ
2794 config SYS_SUPPORTS_1024HZ
2797 config SYS_SUPPORTS_ARBIT_HZ
2799 default y if !SYS_SUPPORTS_24HZ && \
2800 !SYS_SUPPORTS_48HZ && \
2801 !SYS_SUPPORTS_100HZ && \
2802 !SYS_SUPPORTS_128HZ && \
2803 !SYS_SUPPORTS_250HZ && \
2804 !SYS_SUPPORTS_256HZ && \
2805 !SYS_SUPPORTS_1000HZ && \
2806 !SYS_SUPPORTS_1024HZ
2812 default 100 if HZ_100
2813 default 128 if HZ_128
2814 default 250 if HZ_250
2815 default 256 if HZ_256
2816 default 1000 if HZ_1000
2817 default 1024 if HZ_1024
2820 def_bool HIGH_RES_TIMERS
2822 source "kernel/Kconfig.preempt"
2825 bool "Kexec system call"
2828 kexec is a system call that implements the ability to shutdown your
2829 current kernel, and to start another kernel. It is like a reboot
2830 but it is independent of the system firmware. And like a reboot
2831 you can start any kernel with it, not just Linux.
2833 The name comes from the similarity to the exec system call.
2835 It is an ongoing process to be certain the hardware in a machine
2836 is properly shutdown, so do not be surprised if this code does not
2837 initially work for you. As of this writing the exact hardware
2838 interface is strongly in flux, so no good recommendation can be
2842 bool "Kernel crash dumps"
2844 Generate crash dump after being started by kexec.
2845 This should be normally only set in special crash dump kernels
2846 which are loaded in the main kernel with kexec-tools into
2847 a specially reserved region and then later executed after
2848 a crash by kdump/kexec. The crash dump kernel must be compiled
2849 to a memory address not used by the main kernel or firmware using
2852 config PHYSICAL_START
2853 hex "Physical address where the kernel is loaded"
2854 default "0xffffffff84000000" if 64BIT
2855 default "0x84000000" if 32BIT
2856 depends on CRASH_DUMP
2858 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2859 If you plan to use kernel for capturing the crash dump change
2860 this value to start of the reserved region (the "X" value as
2861 specified in the "crashkernel=YM@XM" command line boot parameter
2862 passed to the panic-ed kernel).
2865 bool "Enable seccomp to safely compute untrusted bytecode"
2869 This kernel feature is useful for number crunching applications
2870 that may need to compute untrusted bytecode during their
2871 execution. By using pipes or other transports made available to
2872 the process as file descriptors supporting the read/write
2873 syscalls, it's possible to isolate those applications in
2874 their own address space using seccomp. Once seccomp is
2875 enabled via /proc/<pid>/seccomp, it cannot be disabled
2876 and the task is only allowed to execute a few safe syscalls
2877 defined by each seccomp mode.
2879 If unsure, say Y. Only embedded should say N here.
2881 config MIPS_O32_FP64_SUPPORT
2882 bool "Support for O32 binaries using 64-bit FP"
2883 depends on 32BIT || MIPS32_O32
2885 When this is enabled, the kernel will support use of 64-bit floating
2886 point registers with binaries using the O32 ABI along with the
2887 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2888 32-bit MIPS systems this support is at the cost of increasing the
2889 size and complexity of the compiled FPU emulator. Thus if you are
2890 running a MIPS32 system and know that none of your userland binaries
2891 will require 64-bit floating point, you may wish to reduce the size
2892 of your kernel & potentially improve FP emulation performance by
2895 Although binutils currently supports use of this flag the details
2896 concerning its effect upon the O32 ABI in userland are still being
2897 worked on. In order to avoid userland becoming dependant upon current
2898 behaviour before the details have been finalised, this option should
2899 be considered experimental and only enabled by those working upon
2907 select OF_EARLY_FLATTREE
2914 prompt "Kernel appended dtb support" if USE_OF
2915 default MIPS_NO_APPENDED_DTB
2917 config MIPS_NO_APPENDED_DTB
2920 Do not enable appended dtb support.
2922 config MIPS_ELF_APPENDED_DTB
2925 With this option, the boot code will look for a device tree binary
2926 DTB) included in the vmlinux ELF section .appended_dtb. By default
2927 it is empty and the DTB can be appended using binutils command
2930 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2932 This is meant as a backward compatiblity 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 config MIPS_RAW_APPENDED_DTB
2937 bool "vmlinux.bin or vmlinuz.bin"
2939 With this option, the boot code will look for a device tree binary
2940 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2941 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2943 This is meant as a backward compatibility convenience for those
2944 systems with a bootloader that can't be upgraded to accommodate
2945 the documented boot protocol using a device tree.
2947 Beware that there is very little in terms of protection against
2948 this option being confused by leftover garbage in memory that might
2949 look like a DTB header after a reboot if no actual DTB is appended
2950 to vmlinux.bin. Do not leave this option active in a production kernel
2951 if you don't intend to always append a DTB.
2955 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2956 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2959 default MIPS_CMDLINE_FROM_BOOTLOADER
2961 config MIPS_CMDLINE_FROM_DTB
2963 bool "Dtb kernel arguments if available"
2965 config MIPS_CMDLINE_DTB_EXTEND
2967 bool "Extend dtb kernel arguments with bootloader arguments"
2969 config MIPS_CMDLINE_FROM_BOOTLOADER
2970 bool "Bootloader kernel arguments if available"
2972 config MIPS_CMDLINE_BUILTIN_EXTEND
2973 depends on CMDLINE_BOOL
2974 bool "Extend builtin kernel arguments with bootloader arguments"
2979 config LOCKDEP_SUPPORT
2983 config STACKTRACE_SUPPORT
2987 config HAVE_LATENCYTOP_SUPPORT
2991 config PGTABLE_LEVELS
2993 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2994 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
2997 source "init/Kconfig"
2999 source "kernel/Kconfig.freezer"
3001 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3009 bool "Support for PCI controller"
3010 depends on HW_HAS_PCI
3013 Find out whether you have a PCI motherboard. PCI is the name of a
3014 bus system, i.e. the way the CPU talks to the other stuff inside
3015 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3019 bool "Support for HT-linked PCI"
3021 depends on CPU_LOONGSON3
3025 Loongson family machines use Hyper-Transport bus for inter-core
3026 connection and device connection. The PCI bus is a subordinate
3027 linked at HT. Choose Y for Loongson-3 based machines.
3032 config PCI_DOMAINS_GENERIC
3035 config PCI_DRIVERS_GENERIC
3036 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3039 config PCI_DRIVERS_LEGACY
3040 def_bool !PCI_DRIVERS_GENERIC
3041 select NO_GENERIC_PCI_IOPORT_MAP
3043 source "drivers/pci/Kconfig"
3046 # ISA support is now enabled via select. Too many systems still have the one
3047 # or other ISA chip on the board that users don't know about so don't expect
3048 # users to choose the right thing ...
3055 depends on HW_HAS_EISA
3057 select GENERIC_ISA_DMA
3059 The Extended Industry Standard Architecture (EISA) bus was
3060 developed as an open alternative to the IBM MicroChannel bus.
3062 The EISA bus provided some of the features of the IBM MicroChannel
3063 bus while maintaining backward compatibility with cards made for
3064 the older ISA bus. The EISA bus saw limited use between 1988 and
3065 1995 when it was made obsolete by the PCI bus.
3067 Say Y here if you are building a kernel for an EISA-based machine.
3071 source "drivers/eisa/Kconfig"
3074 bool "TURBOchannel support"
3075 depends on MACH_DECSTATION
3077 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3078 processors. TURBOchannel programming specifications are available
3080 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3082 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3083 Linux driver support status is documented at:
3084 <http://www.linux-mips.org/wiki/DECstation>
3090 config ARCH_MMAP_RND_BITS_MIN
3094 config ARCH_MMAP_RND_BITS_MAX
3098 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3101 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3108 select MIPS_EXTERNAL_TIMER
3116 source "drivers/pcmcia/Kconfig"
3119 tristate "RapidIO support"
3123 If you say Y here, the kernel will include drivers and
3124 infrastructure code to support RapidIO interconnect devices.
3126 source "drivers/rapidio/Kconfig"
3130 menu "Executable file formats"
3132 source "fs/Kconfig.binfmt"
3137 config MIPS32_COMPAT
3143 config SYSVIPC_COMPAT
3147 bool "Kernel support for o32 binaries"
3149 select ARCH_WANT_OLD_COMPAT_IPC
3151 select MIPS32_COMPAT
3152 select SYSVIPC_COMPAT if SYSVIPC
3154 Select this option if you want to run o32 binaries. These are pure
3155 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3156 existing binaries are in this format.
3161 bool "Kernel support for n32 binaries"
3163 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3165 select MIPS32_COMPAT
3166 select SYSVIPC_COMPAT if SYSVIPC
3168 Select this option if you want to run n32 binaries. These are
3169 64-bit binaries using 32-bit quantities for addressing and certain
3170 data that would normally be 64-bit. They are used in special
3177 default y if MIPS32_O32 || MIPS32_N32
3182 menu "Power management options"
3184 config ARCH_HIBERNATION_POSSIBLE
3186 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3188 config ARCH_SUSPEND_POSSIBLE
3190 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3192 source "kernel/power/Kconfig"
3196 config MIPS_EXTERNAL_TIMER
3199 menu "CPU Power Management"
3201 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3202 source "drivers/cpufreq/Kconfig"
3205 source "drivers/cpuidle/Kconfig"
3209 source "net/Kconfig"
3211 source "drivers/Kconfig"
3213 source "drivers/firmware/Kconfig"
3217 source "arch/mips/Kconfig.debug"
3219 source "security/Kconfig"
3221 source "crypto/Kconfig"
3223 source "lib/Kconfig"
3225 source "arch/mips/kvm/Kconfig"