1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_HAS_FORTIFY_SOURCE
9 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11 select ARCH_HAS_UBSAN_SANITIZE_ALL
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_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
18 select ARCH_WANT_IPC_PARSE_VERSION
19 select BUILDTIME_TABLE_SORT
20 select CLONE_BACKWARDS
21 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
22 select CPU_PM if CPU_IDLE
23 select GENERIC_ATOMIC64 if !64BIT
24 select GENERIC_CLOCKEVENTS
25 select GENERIC_CMOS_UPDATE
26 select GENERIC_CPU_AUTOPROBE
27 select GENERIC_GETTIMEOFDAY
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_ISA_DMA if EISA
32 select GENERIC_LIB_ASHLDI3
33 select GENERIC_LIB_ASHRDI3
34 select GENERIC_LIB_CMPDI2
35 select GENERIC_LIB_LSHRDI3
36 select GENERIC_LIB_UCMPDI2
37 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_TIME_VSYSCALL
40 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
41 select HANDLE_DOMAIN_IRQ
42 select HAVE_ARCH_COMPILER_H
43 select HAVE_ARCH_JUMP_LABEL
45 select HAVE_ARCH_MMAP_RND_BITS if MMU
46 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
47 select HAVE_ARCH_SECCOMP_FILTER
48 select HAVE_ARCH_TRACEHOOK
49 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
50 select HAVE_ASM_MODVERSIONS
51 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
52 select HAVE_CONTEXT_TRACKING
54 select HAVE_C_RECORDMCOUNT
55 select HAVE_DEBUG_KMEMLEAK
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_DMA_CONTIGUOUS
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
60 select HAVE_EXIT_THREAD
62 select HAVE_FTRACE_MCOUNT_RECORD
63 select HAVE_FUNCTION_GRAPH_TRACER
64 select HAVE_FUNCTION_TRACER
65 select HAVE_GCC_PLUGINS
66 select HAVE_GENERIC_VDSO
68 select HAVE_IOREMAP_PROT
69 select HAVE_IRQ_EXIT_ON_IRQ_STACK
70 select HAVE_IRQ_TIME_ACCOUNTING
72 select HAVE_KRETPROBES
73 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
74 select HAVE_MOD_ARCH_SPECIFIC
77 select HAVE_PERF_EVENTS
78 select HAVE_REGS_AND_STACK_ACCESS_API
80 select HAVE_SPARSE_SYSCALL_NR
81 select HAVE_STACKPROTECTOR
82 select HAVE_SYSCALL_TRACEPOINTS
83 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
84 select IRQ_FORCED_THREADING
86 select MODULES_USE_ELF_REL if MODULES
87 select MODULES_USE_ELF_RELA if MODULES && 64BIT
88 select PERF_USE_VMALLOC
90 select SYSCTL_EXCEPTION_TRACE
93 config MIPS_FIXUP_BIGPHYS_ADDR
96 menu "Machine selection"
103 bool "Generic board-agnostic MIPS kernel"
107 select CLKSRC_MIPS_GIC
109 select CPU_MIPSR2_IRQ_EI
110 select CPU_MIPSR2_IRQ_VI
112 select DMA_PERDEV_COHERENT
115 select MIPS_AUTO_PFN_OFFSET
116 select MIPS_CPU_SCACHE
118 select MIPS_L1_CACHE_SHIFT_7
119 select NO_EXCEPT_FILL
120 select PCI_DRIVERS_GENERIC
123 select SYS_HAS_CPU_MIPS32_R1
124 select SYS_HAS_CPU_MIPS32_R2
125 select SYS_HAS_CPU_MIPS32_R6
126 select SYS_HAS_CPU_MIPS64_R1
127 select SYS_HAS_CPU_MIPS64_R2
128 select SYS_HAS_CPU_MIPS64_R6
129 select SYS_SUPPORTS_32BIT_KERNEL
130 select SYS_SUPPORTS_64BIT_KERNEL
131 select SYS_SUPPORTS_BIG_ENDIAN
132 select SYS_SUPPORTS_HIGHMEM
133 select SYS_SUPPORTS_LITTLE_ENDIAN
134 select SYS_SUPPORTS_MICROMIPS
135 select SYS_SUPPORTS_MIPS16
136 select SYS_SUPPORTS_MIPS_CPS
137 select SYS_SUPPORTS_MULTITHREADING
138 select SYS_SUPPORTS_RELOCATABLE
139 select SYS_SUPPORTS_SMARTMIPS
141 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
142 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
143 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
144 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
145 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
146 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
149 Select this to build a kernel which aims to support multiple boards,
150 generally using a flattened device tree passed from the bootloader
151 using the boot protocol defined in the UHI (Unified Hosting
152 Interface) specification.
155 bool "Alchemy processor based machines"
156 select PHYS_ADDR_T_64BIT
160 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
161 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
162 select SYS_HAS_CPU_MIPS32_R1
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_APM_EMULATION
166 select SYS_SUPPORTS_ZBOOT
170 bool "Texas Instruments AR7"
172 select DMA_NONCOHERENT
176 select NO_EXCEPT_FILL
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_HAS_EARLY_PRINTK
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_SUPPORTS_LITTLE_ENDIAN
182 select SYS_SUPPORTS_MIPS16
183 select SYS_SUPPORTS_ZBOOT_UART16550
186 select HAVE_LEGACY_CLK
188 Support for the Texas Instruments AR7 System-on-a-Chip
189 family: TNETD7100, 7200 and 7300.
192 bool "Atheros AR231x/AR531x SoC support"
195 select DMA_NONCOHERENT
198 select SYS_HAS_CPU_MIPS32_R1
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_HAS_EARLY_PRINTK
203 Support for Atheros AR231x and Atheros AR531x based boards
206 bool "Atheros AR71XX/AR724X/AR913X based boards"
207 select ARCH_HAS_RESET_CONTROLLER
211 select DMA_NONCOHERENT
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_HAS_EARLY_PRINTK
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_MIPS16
221 select SYS_SUPPORTS_ZBOOT_UART_PROM
223 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
225 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
228 bool "Broadcom Generic BMIPS kernel"
229 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
230 select ARCH_HAS_PHYS_TO_DMA
232 select NO_EXCEPT_FILL
238 select BCM6345_L1_IRQ
239 select BCM7038_L1_IRQ
240 select BCM7120_L2_IRQ
241 select BRCMSTB_L2_IRQ
243 select DMA_NONCOHERENT
244 select SYS_SUPPORTS_32BIT_KERNEL
245 select SYS_SUPPORTS_LITTLE_ENDIAN
246 select SYS_SUPPORTS_BIG_ENDIAN
247 select SYS_SUPPORTS_HIGHMEM
248 select SYS_HAS_CPU_BMIPS32_3300
249 select SYS_HAS_CPU_BMIPS4350
250 select SYS_HAS_CPU_BMIPS4380
251 select SYS_HAS_CPU_BMIPS5000
253 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
254 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
255 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
256 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
257 select HARDIRQS_SW_RESEND
259 Build a generic DT-based kernel image that boots on select
260 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
261 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
262 must be set appropriately for your board.
265 bool "Broadcom BCM47XX based boards"
269 select DMA_NONCOHERENT
272 select SYS_HAS_CPU_MIPS32_R1
273 select NO_EXCEPT_FILL
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_LITTLE_ENDIAN
276 select SYS_SUPPORTS_MIPS16
277 select SYS_SUPPORTS_ZBOOT
278 select SYS_HAS_EARLY_PRINTK
279 select USE_GENERIC_EARLY_PRINTK_8250
281 select LEDS_GPIO_REGISTER
284 select BCM47XX_SSB if !BCM47XX_BCMA
286 Support for BCM47XX based boards
289 bool "Broadcom BCM63XX based boards"
294 select DMA_NONCOHERENT
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_BIG_ENDIAN
298 select SYS_HAS_EARLY_PRINTK
301 select MIPS_L1_CACHE_SHIFT_4
303 select HAVE_LEGACY_CLK
305 Support for BCM63XX based boards
312 select DMA_NONCOHERENT
318 select PCI_GT64XXX_PCI0
319 select SYS_HAS_CPU_NEVADA
320 select SYS_HAS_EARLY_PRINTK
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_64BIT_KERNEL
323 select SYS_SUPPORTS_LITTLE_ENDIAN
324 select USE_GENERIC_EARLY_PRINTK_8250
326 config MACH_DECSTATION
330 select CEVT_R4K if CPU_R4X00
332 select CSRC_R4K if CPU_R4X00
333 select CPU_DADDI_WORKAROUNDS if 64BIT
334 select CPU_R4000_WORKAROUNDS if 64BIT
335 select CPU_R4400_WORKAROUNDS if 64BIT
336 select DMA_NONCOHERENT
339 select SYS_HAS_CPU_R3000
340 select SYS_HAS_CPU_R4X00
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_LITTLE_ENDIAN
344 select SYS_SUPPORTS_128HZ
345 select SYS_SUPPORTS_256HZ
346 select SYS_SUPPORTS_1024HZ
347 select MIPS_L1_CACHE_SHIFT_4
349 This enables support for DEC's MIPS based workstations. For details
350 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
351 DECstation porting pages on <http://decstation.unix-ag.org/>.
353 If you have one of the following DECstation Models you definitely
354 want to choose R4xx0 for the CPU Type:
361 otherwise choose R3000.
364 bool "Jazz family of machines"
367 select ARCH_MIGHT_HAVE_PC_PARPORT
368 select ARCH_MIGHT_HAVE_PC_SERIO
372 select ARCH_MAY_HAVE_PC_FDC
375 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
376 select GENERIC_ISA_DMA
377 select HAVE_PCSPKR_PLATFORM
382 select SYS_HAS_CPU_R4X00
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_64BIT_KERNEL
385 select SYS_SUPPORTS_100HZ
387 This a family of machines based on the MIPS R4030 chipset which was
388 used by several vendors to build RISC/os and Windows NT workstations.
389 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
390 Olivetti M700-10 workstations.
393 bool "Ingenic SoC based machines"
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_ZBOOT_UART16550
397 select CPU_SUPPORTS_HUGEPAGES
398 select DMA_NONCOHERENT
403 select GENERIC_IRQ_CHIP
404 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
408 bool "Lantiq based platforms"
409 select DMA_NONCOHERENT
413 select SYS_HAS_CPU_MIPS32_R1
414 select SYS_HAS_CPU_MIPS32_R2
415 select SYS_SUPPORTS_BIG_ENDIAN
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_MIPS16
418 select SYS_SUPPORTS_MULTITHREADING
419 select SYS_SUPPORTS_VPE_LOADER
420 select SYS_HAS_EARLY_PRINTK
425 select HAVE_LEGACY_CLK
428 select PINCTRL_LANTIQ
429 select ARCH_HAS_RESET_CONTROLLER
430 select RESET_CONTROLLER
432 config MACH_LOONGSON32
433 bool "Loongson 32-bit family of machines"
434 select SYS_SUPPORTS_ZBOOT
436 This enables support for the Loongson-1 family of machines.
438 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
439 the Institute of Computing Technology (ICT), Chinese Academy of
442 config MACH_LOONGSON2EF
443 bool "Loongson-2E/F family of machines"
444 select SYS_SUPPORTS_ZBOOT
446 This enables the support of early Loongson-2E/F family of machines.
448 config MACH_LOONGSON64
449 bool "Loongson 64-bit family of machines"
450 select ARCH_SPARSEMEM_ENABLE
451 select ARCH_MIGHT_HAVE_PC_PARPORT
452 select ARCH_MIGHT_HAVE_PC_SERIO
453 select GENERIC_ISA_DMA_SUPPORT_BROKEN
463 select NO_EXCEPT_FILL
464 select NR_CPUS_DEFAULT_64
465 select USE_GENERIC_EARLY_PRINTK_8250
466 select PCI_DRIVERS_GENERIC
467 select SYS_HAS_CPU_LOONGSON64
468 select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_SMP
470 select SYS_SUPPORTS_HOTPLUG_CPU
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_64BIT_KERNEL
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_LITTLE_ENDIAN
475 select SYS_SUPPORTS_ZBOOT
481 select PCI_HOST_GENERIC
483 This enables the support of Loongson-2/3 family of machines.
485 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
486 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
487 and Loongson-2F which will be removed), developed by the Institute
488 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
490 config MACH_PISTACHIO
491 bool "IMG Pistachio SoC based boards"
495 select CLKSRC_MIPS_GIC
498 select DMA_NONCOHERENT
502 select MIPS_CPU_SCACHE
506 select SYS_HAS_CPU_MIPS32_R2
507 select SYS_SUPPORTS_32BIT_KERNEL
508 select SYS_SUPPORTS_LITTLE_ENDIAN
509 select SYS_SUPPORTS_MIPS_CPS
510 select SYS_SUPPORTS_MULTITHREADING
511 select SYS_SUPPORTS_RELOCATABLE
512 select SYS_SUPPORTS_ZBOOT
513 select SYS_HAS_EARLY_PRINTK
514 select USE_GENERIC_EARLY_PRINTK_8250
517 This enables support for the IMG Pistachio SoC platform.
520 bool "MIPS Malta board"
521 select ARCH_MAY_HAVE_PC_FDC
522 select ARCH_MIGHT_HAVE_PC_PARPORT
523 select ARCH_MIGHT_HAVE_PC_SERIO
528 select CLKSRC_MIPS_GIC
531 select DMA_MAYBE_COHERENT
532 select GENERIC_ISA_DMA
533 select HAVE_PCSPKR_PLATFORM
539 select MIPS_CPU_SCACHE
541 select MIPS_L1_CACHE_SHIFT_6
543 select PCI_GT64XXX_PCI0
546 select SYS_HAS_CPU_MIPS32_R1
547 select SYS_HAS_CPU_MIPS32_R2
548 select SYS_HAS_CPU_MIPS32_R3_5
549 select SYS_HAS_CPU_MIPS32_R5
550 select SYS_HAS_CPU_MIPS32_R6
551 select SYS_HAS_CPU_MIPS64_R1
552 select SYS_HAS_CPU_MIPS64_R2
553 select SYS_HAS_CPU_MIPS64_R6
554 select SYS_HAS_CPU_NEVADA
555 select SYS_HAS_CPU_RM7000
556 select SYS_SUPPORTS_32BIT_KERNEL
557 select SYS_SUPPORTS_64BIT_KERNEL
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_HIGHMEM
560 select SYS_SUPPORTS_LITTLE_ENDIAN
561 select SYS_SUPPORTS_MICROMIPS
562 select SYS_SUPPORTS_MIPS16
563 select SYS_SUPPORTS_MIPS_CMP
564 select SYS_SUPPORTS_MIPS_CPS
565 select SYS_SUPPORTS_MULTITHREADING
566 select SYS_SUPPORTS_RELOCATABLE
567 select SYS_SUPPORTS_SMARTMIPS
568 select SYS_SUPPORTS_VPE_LOADER
569 select SYS_SUPPORTS_ZBOOT
571 select ZONE_DMA32 if 64BIT
573 This enables support for the MIPS Technologies Malta evaluation
577 bool "Microchip PIC32 Family"
579 This enables support for the Microchip PIC32 family of platforms.
581 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
585 bool "NEC VR4100 series based machines"
588 select SYS_HAS_CPU_VR41XX
589 select SYS_SUPPORTS_MIPS16
593 bool "Ralink based machines"
597 select DMA_NONCOHERENT
600 select SYS_HAS_CPU_MIPS32_R1
601 select SYS_HAS_CPU_MIPS32_R2
602 select SYS_SUPPORTS_32BIT_KERNEL
603 select SYS_SUPPORTS_LITTLE_ENDIAN
604 select SYS_SUPPORTS_MIPS16
605 select SYS_HAS_EARLY_PRINTK
607 select ARCH_HAS_RESET_CONTROLLER
608 select RESET_CONTROLLER
611 bool "SGI IP22 (Indy/Indigo2)"
616 select ARCH_MIGHT_HAVE_PC_SERIO
620 select DEFAULT_SGI_PARTITION
621 select DMA_NONCOHERENT
625 select IP22_CPU_SCACHE
627 select GENERIC_ISA_DMA_SUPPORT_BROKEN
629 select SGI_HAS_INDYDOG
635 select SYS_HAS_CPU_R4X00
636 select SYS_HAS_CPU_R5000
637 select SYS_HAS_EARLY_PRINTK
638 select SYS_SUPPORTS_32BIT_KERNEL
639 select SYS_SUPPORTS_64BIT_KERNEL
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select WAR_R4600_V1_INDEX_ICACHEOP
642 select WAR_R4600_V1_HIT_CACHEOP
643 select MIPS_L1_CACHE_SHIFT_7
645 This are the SGI Indy, Challenge S and Indigo2, as well as certain
646 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
647 that runs on these, say Y here.
650 bool "SGI IP27 (Origin200/2000)"
651 select ARCH_HAS_PHYS_TO_DMA
652 select ARCH_SPARSEMEM_ENABLE
655 select ARC_CMDLINE_ONLY
657 select DEFAULT_SGI_PARTITION
658 select SYS_HAS_EARLY_PRINTK
661 select IRQ_DOMAIN_HIERARCHY
662 select NR_CPUS_DEFAULT_64
663 select PCI_DRIVERS_GENERIC
664 select PCI_XTALK_BRIDGE
665 select SYS_HAS_CPU_R10000
666 select SYS_SUPPORTS_64BIT_KERNEL
667 select SYS_SUPPORTS_BIG_ENDIAN
668 select SYS_SUPPORTS_NUMA
669 select SYS_SUPPORTS_SMP
670 select MIPS_L1_CACHE_SHIFT_7
673 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
674 workstations. To compile a Linux kernel that runs on these, say Y
678 bool "SGI IP28 (Indigo2 R10k)"
683 select ARCH_MIGHT_HAVE_PC_SERIO
687 select DEFAULT_SGI_PARTITION
688 select DMA_NONCOHERENT
689 select GENERIC_ISA_DMA_SUPPORT_BROKEN
695 select SGI_HAS_INDYDOG
701 select SYS_HAS_CPU_R10000
702 select SYS_HAS_EARLY_PRINTK
703 select SYS_SUPPORTS_64BIT_KERNEL
704 select SYS_SUPPORTS_BIG_ENDIAN
705 select MIPS_L1_CACHE_SHIFT_7
707 This is the SGI Indigo2 with R10000 processor. To compile a Linux
708 kernel that runs on these, say Y here.
711 bool "SGI IP30 (Octane/Octane2)"
712 select ARCH_HAS_PHYS_TO_DMA
718 select SYNC_R4K if SMP
722 select IRQ_DOMAIN_HIERARCHY
723 select NR_CPUS_DEFAULT_2
724 select PCI_DRIVERS_GENERIC
725 select PCI_XTALK_BRIDGE
726 select SYS_HAS_EARLY_PRINTK
727 select SYS_HAS_CPU_R10000
728 select SYS_SUPPORTS_64BIT_KERNEL
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_SMP
731 select MIPS_L1_CACHE_SHIFT_7
734 These are the SGI Octane and Octane2 graphics workstations. To
735 compile a Linux kernel that runs on these, say Y here.
741 select ARCH_HAS_PHYS_TO_DMA
747 select DMA_NONCOHERENT
750 select R5000_CPU_SCACHE
751 select RM7000_CPU_SCACHE
752 select SYS_HAS_CPU_R5000
753 select SYS_HAS_CPU_R10000 if BROKEN
754 select SYS_HAS_CPU_RM7000
755 select SYS_HAS_CPU_NEVADA
756 select SYS_SUPPORTS_64BIT_KERNEL
757 select SYS_SUPPORTS_BIG_ENDIAN
759 If you want this kernel to run on SGI O2 workstation, say Y here.
762 bool "Sibyte BCM91120C-CRhine"
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 BCM91120x-Carmel"
773 select SIBYTE_BCM1120
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_LITTLE_ENDIAN
780 bool "Sibyte BCM91125C-CRhone"
782 select SIBYTE_BCM1125
784 select SYS_HAS_CPU_SB1
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_HIGHMEM
787 select SYS_SUPPORTS_LITTLE_ENDIAN
790 bool "Sibyte BCM91125E-Rhone"
792 select SIBYTE_BCM1125H
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_LITTLE_ENDIAN
799 bool "Sibyte BCM91250A-SWARM"
801 select HAVE_PATA_PLATFORM
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
808 select ZONE_DMA32 if 64BIT
809 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
811 config SIBYTE_LITTLESUR
812 bool "Sibyte BCM91250C2-LittleSur"
814 select HAVE_PATA_PLATFORM
817 select SYS_HAS_CPU_SB1
818 select SYS_SUPPORTS_BIG_ENDIAN
819 select SYS_SUPPORTS_HIGHMEM
820 select SYS_SUPPORTS_LITTLE_ENDIAN
821 select ZONE_DMA32 if 64BIT
823 config SIBYTE_SENTOSA
824 bool "Sibyte BCM91250E-Sentosa"
828 select SYS_HAS_CPU_SB1
829 select SYS_SUPPORTS_BIG_ENDIAN
830 select SYS_SUPPORTS_LITTLE_ENDIAN
831 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
834 bool "Sibyte BCM91480B-BigSur"
836 select NR_CPUS_DEFAULT_4
837 select SIBYTE_BCM1x80
839 select SYS_HAS_CPU_SB1
840 select SYS_SUPPORTS_BIG_ENDIAN
841 select SYS_SUPPORTS_HIGHMEM
842 select SYS_SUPPORTS_LITTLE_ENDIAN
843 select ZONE_DMA32 if 64BIT
844 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
847 bool "SNI RM200/300/400"
850 select FW_ARC if CPU_LITTLE_ENDIAN
851 select FW_ARC32 if CPU_LITTLE_ENDIAN
852 select FW_SNIPROM if CPU_BIG_ENDIAN
853 select ARCH_MAY_HAVE_PC_FDC
854 select ARCH_MIGHT_HAVE_PC_PARPORT
855 select ARCH_MIGHT_HAVE_PC_SERIO
859 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
860 select DMA_NONCOHERENT
861 select GENERIC_ISA_DMA
863 select HAVE_PCSPKR_PLATFORM
869 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
870 select SYS_HAS_CPU_R4X00
871 select SYS_HAS_CPU_R5000
872 select SYS_HAS_CPU_R10000
873 select R5000_CPU_SCACHE
874 select SYS_HAS_EARLY_PRINTK
875 select SYS_SUPPORTS_32BIT_KERNEL
876 select SYS_SUPPORTS_64BIT_KERNEL
877 select SYS_SUPPORTS_BIG_ENDIAN
878 select SYS_SUPPORTS_HIGHMEM
879 select SYS_SUPPORTS_LITTLE_ENDIAN
881 The SNI RM200/300/400 are MIPS-based machines manufactured by
882 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
883 Technology and now in turn merged with Fujitsu. Say Y here to
884 support this machine type.
887 bool "Toshiba TX39 series based machines"
890 bool "Toshiba TX49 series based machines"
892 config MIKROTIK_RB532
893 bool "Mikrotik RB532 boards"
896 select DMA_NONCOHERENT
899 select SYS_HAS_CPU_MIPS32_R1
900 select SYS_SUPPORTS_32BIT_KERNEL
901 select SYS_SUPPORTS_LITTLE_ENDIAN
905 select MIPS_L1_CACHE_SHIFT_4
907 Support the Mikrotik(tm) RouterBoard 532 series,
908 based on the IDT RC32434 SoC.
910 config CAVIUM_OCTEON_SOC
911 bool "Cavium Networks Octeon SoC based boards"
913 select ARCH_HAS_PHYS_TO_DMA
915 select PHYS_ADDR_T_64BIT
916 select SYS_SUPPORTS_64BIT_KERNEL
917 select SYS_SUPPORTS_BIG_ENDIAN
919 select EDAC_ATOMIC_SCRUB
920 select SYS_SUPPORTS_LITTLE_ENDIAN
921 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
922 select SYS_HAS_EARLY_PRINTK
923 select SYS_HAS_CPU_CAVIUM_OCTEON
925 select HAVE_PLAT_DELAY
926 select HAVE_PLAT_FW_INIT_CMDLINE
927 select HAVE_PLAT_MEMCPY
932 select ARCH_SPARSEMEM_ENABLE
933 select SYS_SUPPORTS_SMP
934 select NR_CPUS_DEFAULT_64
935 select MIPS_NR_CPU_NR_MAP_1024
937 select MTD_COMPLEX_MAPPINGS
939 select SYS_SUPPORTS_RELOCATABLE
941 This option supports all of the Octeon reference boards from Cavium
942 Networks. It builds a kernel that dynamically determines the Octeon
943 CPU type and supports all known board reference implementations.
944 Some of the supported boards are:
951 Say Y here for most Octeon reference boards.
954 bool "Netlogic XLR/XLS based systems"
957 select SYS_HAS_CPU_XLR
958 select SYS_SUPPORTS_SMP
961 select SYS_SUPPORTS_32BIT_KERNEL
962 select SYS_SUPPORTS_64BIT_KERNEL
963 select PHYS_ADDR_T_64BIT
964 select SYS_SUPPORTS_BIG_ENDIAN
965 select SYS_SUPPORTS_HIGHMEM
966 select NR_CPUS_DEFAULT_32
970 select ZONE_DMA32 if 64BIT
972 select SYS_HAS_EARLY_PRINTK
973 select SYS_SUPPORTS_ZBOOT
974 select SYS_SUPPORTS_ZBOOT_UART16550
976 Support for systems based on Netlogic XLR and XLS processors.
977 Say Y here if you have a XLR or XLS based board.
980 bool "Netlogic XLP based systems"
983 select SYS_HAS_CPU_XLP
984 select SYS_SUPPORTS_SMP
986 select SYS_SUPPORTS_32BIT_KERNEL
987 select SYS_SUPPORTS_64BIT_KERNEL
988 select PHYS_ADDR_T_64BIT
990 select SYS_SUPPORTS_BIG_ENDIAN
991 select SYS_SUPPORTS_LITTLE_ENDIAN
992 select SYS_SUPPORTS_HIGHMEM
993 select NR_CPUS_DEFAULT_32
997 select ZONE_DMA32 if 64BIT
999 select SYS_HAS_EARLY_PRINTK
1001 select SYS_SUPPORTS_ZBOOT
1002 select SYS_SUPPORTS_ZBOOT_UART16550
1004 This board is based on Netlogic XLP Processor.
1005 Say Y here if you have a XLP based board.
1009 source "arch/mips/alchemy/Kconfig"
1010 source "arch/mips/ath25/Kconfig"
1011 source "arch/mips/ath79/Kconfig"
1012 source "arch/mips/bcm47xx/Kconfig"
1013 source "arch/mips/bcm63xx/Kconfig"
1014 source "arch/mips/bmips/Kconfig"
1015 source "arch/mips/generic/Kconfig"
1016 source "arch/mips/jazz/Kconfig"
1017 source "arch/mips/jz4740/Kconfig"
1018 source "arch/mips/lantiq/Kconfig"
1019 source "arch/mips/pic32/Kconfig"
1020 source "arch/mips/pistachio/Kconfig"
1021 source "arch/mips/ralink/Kconfig"
1022 source "arch/mips/sgi-ip27/Kconfig"
1023 source "arch/mips/sibyte/Kconfig"
1024 source "arch/mips/txx9/Kconfig"
1025 source "arch/mips/vr41xx/Kconfig"
1026 source "arch/mips/cavium-octeon/Kconfig"
1027 source "arch/mips/loongson2ef/Kconfig"
1028 source "arch/mips/loongson32/Kconfig"
1029 source "arch/mips/loongson64/Kconfig"
1030 source "arch/mips/netlogic/Kconfig"
1034 config GENERIC_HWEIGHT
1038 config GENERIC_CALIBRATE_DELAY
1042 config SCHED_OMIT_FRAME_POINTER
1047 # Select some configuration options automatically based on user selections.
1052 config ARCH_MAY_HAVE_PC_FDC
1083 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1089 config MIPS_CLOCK_VSYSCALL
1090 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1099 config ARCH_SUPPORTS_UPROBES
1102 config DMA_MAYBE_COHERENT
1103 select ARCH_HAS_DMA_COHERENCE_H
1104 select DMA_NONCOHERENT
1107 config DMA_PERDEV_COHERENT
1109 select ARCH_HAS_SETUP_DMA_OPS
1110 select DMA_NONCOHERENT
1112 config DMA_NONCOHERENT
1115 # MIPS allows mixing "slightly different" Cacheability and Coherency
1116 # Attribute bits. It is believed that the uncached access through
1117 # KSEG1 and the implementation specific "uncached accelerated" used
1118 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1119 # significant advantages.
1121 select ARCH_HAS_DMA_WRITE_COMBINE
1122 select ARCH_HAS_DMA_PREP_COHERENT
1123 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1124 select ARCH_HAS_DMA_SET_UNCACHED
1125 select DMA_NONCOHERENT_MMAP
1126 select DMA_NONCOHERENT_CACHE_SYNC
1127 select NEED_DMA_MAP_STATE
1129 config SYS_HAS_EARLY_PRINTK
1132 config SYS_SUPPORTS_HOTPLUG_CPU
1135 config MIPS_BONITO64
1144 config NO_IOPORT_MAP
1148 def_bool CPU_NO_LOAD_STORE_LR
1150 config GENERIC_ISA_DMA
1152 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1155 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1157 select GENERIC_ISA_DMA
1159 config HAVE_PLAT_DELAY
1162 config HAVE_PLAT_FW_INIT_CMDLINE
1165 config HAVE_PLAT_MEMCPY
1171 config HOLES_IN_ZONE
1174 config SYS_SUPPORTS_RELOCATABLE
1177 Selected if the platform supports relocating the kernel.
1178 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1179 to allow access to command line and entropy sources.
1181 config MIPS_CBPF_JIT
1183 depends on BPF_JIT && HAVE_CBPF_JIT
1185 config MIPS_EBPF_JIT
1187 depends on BPF_JIT && HAVE_EBPF_JIT
1191 # Endianness selection. Sufficiently obscure so many users don't know what to
1192 # answer,so we try hard to limit the available choices. Also the use of a
1193 # choice statement should be more obvious to the user.
1196 prompt "Endianness selection"
1198 Some MIPS machines can be configured for either little or big endian
1199 byte order. These modes require different kernels and a different
1200 Linux distribution. In general there is one preferred byteorder for a
1201 particular system but some systems are just as commonly used in the
1202 one or the other endianness.
1204 config CPU_BIG_ENDIAN
1206 depends on SYS_SUPPORTS_BIG_ENDIAN
1208 config CPU_LITTLE_ENDIAN
1209 bool "Little endian"
1210 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1217 config SYS_SUPPORTS_APM_EMULATION
1220 config SYS_SUPPORTS_BIG_ENDIAN
1223 config SYS_SUPPORTS_LITTLE_ENDIAN
1226 config SYS_SUPPORTS_HUGETLBFS
1228 depends on CPU_SUPPORTS_HUGEPAGES
1231 config MIPS_HUGE_TLB_SUPPORT
1232 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1249 config PCI_GT64XXX_PCI0
1252 config PCI_XTALK_BRIDGE
1255 config NO_EXCEPT_FILL
1261 config SWAP_IO_SPACE
1264 config SGI_HAS_INDYDOG
1276 config SGI_HAS_ZILOG
1279 config SGI_HAS_I8042
1282 config DEFAULT_SGI_PARTITION
1294 config MIPS_L1_CACHE_SHIFT_4
1297 config MIPS_L1_CACHE_SHIFT_5
1300 config MIPS_L1_CACHE_SHIFT_6
1303 config MIPS_L1_CACHE_SHIFT_7
1306 config MIPS_L1_CACHE_SHIFT
1308 default "7" if MIPS_L1_CACHE_SHIFT_7
1309 default "6" if MIPS_L1_CACHE_SHIFT_6
1310 default "5" if MIPS_L1_CACHE_SHIFT_5
1311 default "4" if MIPS_L1_CACHE_SHIFT_4
1314 config ARC_CMDLINE_ONLY
1318 bool "ARC console support"
1319 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1333 menu "CPU selection"
1339 config CPU_LOONGSON64
1340 bool "Loongson 64-bit CPU"
1341 depends on SYS_HAS_CPU_LOONGSON64
1342 select ARCH_HAS_PHYS_TO_DMA
1344 select CPU_HAS_PREFETCH
1345 select CPU_SUPPORTS_64BIT_KERNEL
1346 select CPU_SUPPORTS_HIGHMEM
1347 select CPU_SUPPORTS_HUGEPAGES
1348 select CPU_SUPPORTS_MSA
1349 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1350 select CPU_MIPSR2_IRQ_VI
1351 select WEAK_ORDERING
1352 select WEAK_REORDERING_BEYOND_LLSC
1353 select MIPS_ASID_BITS_VARIABLE
1354 select MIPS_PGD_C0_CONTEXT
1355 select MIPS_L1_CACHE_SHIFT_6
1360 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1361 cores implements the MIPS64R2 instruction set with many extensions,
1362 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1363 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1364 Loongson-2E/2F is not covered here and will be removed in future.
1366 config LOONGSON3_ENHANCEMENT
1367 bool "New Loongson-3 CPU Enhancements"
1369 depends on CPU_LOONGSON64
1371 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1372 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1373 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1374 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1375 Fast TLB refill support, etc.
1377 This option enable those enhancements which are not probed at run
1378 time. If you want a generic kernel to run on all Loongson 3 machines,
1379 please say 'N' here. If you want a high-performance kernel to run on
1380 new Loongson-3 machines only, please say 'Y' here.
1382 config CPU_LOONGSON3_WORKAROUNDS
1383 bool "Old Loongson-3 LLSC Workarounds"
1385 depends on CPU_LOONGSON64
1387 Loongson-3 processors have the llsc issues which require workarounds.
1388 Without workarounds the system may hang unexpectedly.
1390 Newer Loongson-3 will fix these issues and no workarounds are needed.
1391 The workarounds have no significant side effect on them but may
1392 decrease the performance of the system so this option should be
1393 disabled unless the kernel is intended to be run on old systems.
1395 If unsure, please say Y.
1397 config CPU_LOONGSON3_CPUCFG_EMULATION
1398 bool "Emulate the CPUCFG instruction on older Loongson cores"
1400 depends on CPU_LOONGSON64
1402 Loongson-3A R4 and newer have the CPUCFG instruction available for
1403 userland to query CPU capabilities, much like CPUID on x86. This
1404 option provides emulation of the instruction on older Loongson
1405 cores, back to Loongson-3A1000.
1407 If unsure, please say Y.
1409 config CPU_LOONGSON2E
1411 depends on SYS_HAS_CPU_LOONGSON2E
1412 select CPU_LOONGSON2EF
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_LOONGSON2EF
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_LOONGSON32
1437 select LEDS_GPIO_REGISTER
1439 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1440 Release 1 instruction set and part of the MIPS32 Release 2
1443 config CPU_LOONGSON1C
1445 depends on SYS_HAS_CPU_LOONGSON1C
1446 select CPU_LOONGSON32
1447 select LEDS_GPIO_REGISTER
1449 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1450 Release 1 instruction set and part of the MIPS32 Release 2
1453 config CPU_MIPS32_R1
1454 bool "MIPS32 Release 1"
1455 depends on SYS_HAS_CPU_MIPS32_R1
1456 select CPU_HAS_PREFETCH
1457 select CPU_SUPPORTS_32BIT_KERNEL
1458 select CPU_SUPPORTS_HIGHMEM
1460 Choose this option to build a kernel for release 1 or later of the
1461 MIPS32 architecture. Most modern embedded systems with a 32-bit
1462 MIPS processor are based on a MIPS32 processor. If you know the
1463 specific type of processor in your system, choose those that one
1464 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1465 Release 2 of the MIPS32 architecture is available since several
1466 years so chances are you even have a MIPS32 Release 2 processor
1467 in which case you should choose CPU_MIPS32_R2 instead for better
1470 config CPU_MIPS32_R2
1471 bool "MIPS32 Release 2"
1472 depends on SYS_HAS_CPU_MIPS32_R2
1473 select CPU_HAS_PREFETCH
1474 select CPU_SUPPORTS_32BIT_KERNEL
1475 select CPU_SUPPORTS_HIGHMEM
1476 select CPU_SUPPORTS_MSA
1479 Choose this option to build a kernel for release 2 or later of the
1480 MIPS32 architecture. Most modern embedded systems with a 32-bit
1481 MIPS processor are based on a MIPS32 processor. If you know the
1482 specific type of processor in your system, choose those that one
1483 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1485 config CPU_MIPS32_R5
1486 bool "MIPS32 Release 5"
1487 depends on SYS_HAS_CPU_MIPS32_R5
1488 select CPU_HAS_PREFETCH
1489 select CPU_SUPPORTS_32BIT_KERNEL
1490 select CPU_SUPPORTS_HIGHMEM
1491 select CPU_SUPPORTS_MSA
1493 select MIPS_O32_FP64_SUPPORT
1495 Choose this option to build a kernel for release 5 or later of the
1496 MIPS32 architecture. New MIPS processors, starting with the Warrior
1497 family, are based on a MIPS32r5 processor. If you own an older
1498 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1500 config CPU_MIPS32_R6
1501 bool "MIPS32 Release 6"
1502 depends on SYS_HAS_CPU_MIPS32_R6
1503 select CPU_HAS_PREFETCH
1504 select CPU_NO_LOAD_STORE_LR
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_HIGHMEM
1507 select CPU_SUPPORTS_MSA
1509 select MIPS_O32_FP64_SUPPORT
1511 Choose this option to build a kernel for release 6 or later of the
1512 MIPS32 architecture. New MIPS processors, starting with the Warrior
1513 family, are based on a MIPS32r6 processor. If you own an older
1514 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1516 config CPU_MIPS64_R1
1517 bool "MIPS64 Release 1"
1518 depends on SYS_HAS_CPU_MIPS64_R1
1519 select CPU_HAS_PREFETCH
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HIGHMEM
1523 select CPU_SUPPORTS_HUGEPAGES
1525 Choose this option to build a kernel for release 1 or later of the
1526 MIPS64 architecture. Many modern embedded systems with a 64-bit
1527 MIPS processor are based on a MIPS64 processor. If you know the
1528 specific type of processor in your system, choose those that one
1529 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1530 Release 2 of the MIPS64 architecture is available since several
1531 years so chances are you even have a MIPS64 Release 2 processor
1532 in which case you should choose CPU_MIPS64_R2 instead for better
1535 config CPU_MIPS64_R2
1536 bool "MIPS64 Release 2"
1537 depends on SYS_HAS_CPU_MIPS64_R2
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_HUGEPAGES
1543 select CPU_SUPPORTS_MSA
1546 Choose this option to build a kernel for release 2 or later of the
1547 MIPS64 architecture. Many modern embedded systems with a 64-bit
1548 MIPS processor are based on a MIPS64 processor. If you know the
1549 specific type of processor in your system, choose those that one
1550 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1552 config CPU_MIPS64_R5
1553 bool "MIPS64 Release 5"
1554 depends on SYS_HAS_CPU_MIPS64_R5
1555 select CPU_HAS_PREFETCH
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_HUGEPAGES
1560 select CPU_SUPPORTS_MSA
1561 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1564 Choose this option to build a kernel for release 5 or later of the
1565 MIPS64 architecture. This is a intermediate MIPS architecture
1566 release partly implementing release 6 features. Though there is no
1567 any hardware known to be based on this release.
1569 config CPU_MIPS64_R6
1570 bool "MIPS64 Release 6"
1571 depends on SYS_HAS_CPU_MIPS64_R6
1572 select CPU_HAS_PREFETCH
1573 select CPU_NO_LOAD_STORE_LR
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 select CPU_SUPPORTS_HIGHMEM
1577 select CPU_SUPPORTS_HUGEPAGES
1578 select CPU_SUPPORTS_MSA
1579 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1582 Choose this option to build a kernel for release 6 or later of the
1583 MIPS64 architecture. New MIPS processors, starting with the Warrior
1584 family, are based on a MIPS64r6 processor. If you own an older
1585 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1588 bool "MIPS Warrior P5600"
1589 depends on SYS_HAS_CPU_P5600
1590 select CPU_HAS_PREFETCH
1591 select CPU_SUPPORTS_32BIT_KERNEL
1592 select CPU_SUPPORTS_HIGHMEM
1593 select CPU_SUPPORTS_MSA
1594 select CPU_SUPPORTS_CPUFREQ
1595 select CPU_MIPSR2_IRQ_VI
1596 select CPU_MIPSR2_IRQ_EI
1598 select MIPS_O32_FP64_SUPPORT
1600 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1601 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1602 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1603 level features like up to six P5600 calculation cores, CM2 with L2
1604 cache, IOCU/IOMMU (though might be unused depending on the system-
1605 specific IP core configuration), GIC, CPC, virtualisation module,
1610 depends on SYS_HAS_CPU_R3000
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_HIGHMEM
1616 Please make sure to pick the right CPU type. Linux/MIPS is not
1617 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1618 *not* work on R4000 machines and vice versa. However, since most
1619 of the supported machines have an R4000 (or similar) CPU, R4x00
1620 might be a safe bet. If the resulting kernel does not work,
1621 try to recompile with R3000.
1625 depends on SYS_HAS_CPU_TX39XX
1626 select CPU_SUPPORTS_32BIT_KERNEL
1631 depends on SYS_HAS_CPU_VR41XX
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1635 The options selects support for the NEC VR4100 series of processors.
1636 Only choose this option if you have one of these processors as a
1637 kernel built with this option will not run on any other type of
1638 processor or vice versa.
1642 depends on SYS_HAS_CPU_R4X00
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select CPU_SUPPORTS_HUGEPAGES
1647 MIPS Technologies R4000-series processors other than 4300, including
1648 the R4000, R4400, R4600, and 4700.
1652 depends on SYS_HAS_CPU_TX49XX
1653 select CPU_HAS_PREFETCH
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HUGEPAGES
1660 depends on SYS_HAS_CPU_R5000
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_SUPPORTS_64BIT_KERNEL
1663 select CPU_SUPPORTS_HUGEPAGES
1665 MIPS Technologies R5000-series processors other than the Nevada.
1669 depends on SYS_HAS_CPU_R5500
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HUGEPAGES
1674 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1679 depends on SYS_HAS_CPU_NEVADA
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_64BIT_KERNEL
1682 select CPU_SUPPORTS_HUGEPAGES
1684 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1688 depends on SYS_HAS_CPU_R10000
1689 select CPU_HAS_PREFETCH
1690 select CPU_SUPPORTS_32BIT_KERNEL
1691 select CPU_SUPPORTS_64BIT_KERNEL
1692 select CPU_SUPPORTS_HIGHMEM
1693 select CPU_SUPPORTS_HUGEPAGES
1695 MIPS Technologies R10000-series processors.
1699 depends on SYS_HAS_CPU_RM7000
1700 select CPU_HAS_PREFETCH
1701 select CPU_SUPPORTS_32BIT_KERNEL
1702 select CPU_SUPPORTS_64BIT_KERNEL
1703 select CPU_SUPPORTS_HIGHMEM
1704 select CPU_SUPPORTS_HUGEPAGES
1708 depends on SYS_HAS_CPU_SB1
1709 select CPU_SUPPORTS_32BIT_KERNEL
1710 select CPU_SUPPORTS_64BIT_KERNEL
1711 select CPU_SUPPORTS_HIGHMEM
1712 select CPU_SUPPORTS_HUGEPAGES
1713 select WEAK_ORDERING
1715 config CPU_CAVIUM_OCTEON
1716 bool "Cavium Octeon processor"
1717 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1718 select CPU_HAS_PREFETCH
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select WEAK_ORDERING
1721 select CPU_SUPPORTS_HIGHMEM
1722 select CPU_SUPPORTS_HUGEPAGES
1723 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1724 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1725 select MIPS_L1_CACHE_SHIFT_7
1728 The Cavium Octeon processor is a highly integrated chip containing
1729 many ethernet hardware widgets for networking tasks. The processor
1730 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1731 Full details can be found at http://www.caviumnetworks.com.
1734 bool "Broadcom BMIPS"
1735 depends on SYS_HAS_CPU_BMIPS
1737 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1738 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1739 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1740 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1741 select CPU_SUPPORTS_32BIT_KERNEL
1742 select DMA_NONCOHERENT
1744 select SWAP_IO_SPACE
1745 select WEAK_ORDERING
1746 select CPU_SUPPORTS_HIGHMEM
1747 select CPU_HAS_PREFETCH
1748 select CPU_SUPPORTS_CPUFREQ
1749 select MIPS_EXTERNAL_TIMER
1751 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1754 bool "Netlogic XLR SoC"
1755 depends on SYS_HAS_CPU_XLR
1756 select CPU_SUPPORTS_32BIT_KERNEL
1757 select CPU_SUPPORTS_64BIT_KERNEL
1758 select CPU_SUPPORTS_HIGHMEM
1759 select CPU_SUPPORTS_HUGEPAGES
1760 select WEAK_ORDERING
1761 select WEAK_REORDERING_BEYOND_LLSC
1763 Netlogic Microsystems XLR/XLS processors.
1766 bool "Netlogic XLP SoC"
1767 depends on SYS_HAS_CPU_XLP
1768 select CPU_SUPPORTS_32BIT_KERNEL
1769 select CPU_SUPPORTS_64BIT_KERNEL
1770 select CPU_SUPPORTS_HIGHMEM
1771 select WEAK_ORDERING
1772 select WEAK_REORDERING_BEYOND_LLSC
1773 select CPU_HAS_PREFETCH
1775 select CPU_SUPPORTS_HUGEPAGES
1776 select MIPS_ASID_BITS_VARIABLE
1778 Netlogic Microsystems XLP processors.
1781 config CPU_MIPS32_3_5_FEATURES
1782 bool "MIPS32 Release 3.5 Features"
1783 depends on SYS_HAS_CPU_MIPS32_R3_5
1784 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1787 Choose this option to build a kernel for release 2 or later of the
1788 MIPS32 architecture including features from the 3.5 release such as
1789 support for Enhanced Virtual Addressing (EVA).
1791 config CPU_MIPS32_3_5_EVA
1792 bool "Enhanced Virtual Addressing (EVA)"
1793 depends on CPU_MIPS32_3_5_FEATURES
1797 Choose this option if you want to enable the Enhanced Virtual
1798 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1799 One of its primary benefits is an increase in the maximum size
1800 of lowmem (up to 3GB). If unsure, say 'N' here.
1802 config CPU_MIPS32_R5_FEATURES
1803 bool "MIPS32 Release 5 Features"
1804 depends on SYS_HAS_CPU_MIPS32_R5
1805 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1807 Choose this option to build a kernel for release 2 or later of the
1808 MIPS32 architecture including features from release 5 such as
1809 support for Extended Physical Addressing (XPA).
1811 config CPU_MIPS32_R5_XPA
1812 bool "Extended Physical Addressing (XPA)"
1813 depends on CPU_MIPS32_R5_FEATURES
1815 depends on !PAGE_SIZE_4KB
1816 depends on SYS_SUPPORTS_HIGHMEM
1819 select PHYS_ADDR_T_64BIT
1822 Choose this option if you want to enable the Extended Physical
1823 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1824 benefit is to increase physical addressing equal to or greater
1825 than 40 bits. Note that this has the side effect of turning on
1826 64-bit addressing which in turn makes the PTEs 64-bit in size.
1827 If unsure, say 'N' here.
1830 config CPU_NOP_WORKAROUNDS
1833 config CPU_JUMP_WORKAROUNDS
1836 config CPU_LOONGSON2F_WORKAROUNDS
1837 bool "Loongson 2F Workarounds"
1839 select CPU_NOP_WORKAROUNDS
1840 select CPU_JUMP_WORKAROUNDS
1842 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1843 require workarounds. Without workarounds the system may hang
1844 unexpectedly. For more information please refer to the gas
1845 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1847 Loongson 2F03 and later have fixed these issues and no workarounds
1848 are needed. The workarounds have no significant side effect on them
1849 but may decrease the performance of the system so this option should
1850 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1853 If unsure, please say Y.
1854 endif # CPU_LOONGSON2F
1856 config SYS_SUPPORTS_ZBOOT
1858 select HAVE_KERNEL_GZIP
1859 select HAVE_KERNEL_BZIP2
1860 select HAVE_KERNEL_LZ4
1861 select HAVE_KERNEL_LZMA
1862 select HAVE_KERNEL_LZO
1863 select HAVE_KERNEL_XZ
1864 select HAVE_KERNEL_ZSTD
1866 config SYS_SUPPORTS_ZBOOT_UART16550
1868 select SYS_SUPPORTS_ZBOOT
1870 config SYS_SUPPORTS_ZBOOT_UART_PROM
1872 select SYS_SUPPORTS_ZBOOT
1874 config CPU_LOONGSON2EF
1876 select CPU_SUPPORTS_32BIT_KERNEL
1877 select CPU_SUPPORTS_64BIT_KERNEL
1878 select CPU_SUPPORTS_HIGHMEM
1879 select CPU_SUPPORTS_HUGEPAGES
1880 select ARCH_HAS_PHYS_TO_DMA
1882 config CPU_LOONGSON32
1886 select CPU_HAS_PREFETCH
1887 select CPU_SUPPORTS_32BIT_KERNEL
1888 select CPU_SUPPORTS_HIGHMEM
1889 select CPU_SUPPORTS_CPUFREQ
1891 config CPU_BMIPS32_3300
1892 select SMP_UP if SMP
1895 config CPU_BMIPS4350
1897 select SYS_SUPPORTS_SMP
1898 select SYS_SUPPORTS_HOTPLUG_CPU
1900 config CPU_BMIPS4380
1902 select MIPS_L1_CACHE_SHIFT_6
1903 select SYS_SUPPORTS_SMP
1904 select SYS_SUPPORTS_HOTPLUG_CPU
1907 config CPU_BMIPS5000
1909 select MIPS_CPU_SCACHE
1910 select MIPS_L1_CACHE_SHIFT_7
1911 select SYS_SUPPORTS_SMP
1912 select SYS_SUPPORTS_HOTPLUG_CPU
1915 config SYS_HAS_CPU_LOONGSON64
1917 select CPU_SUPPORTS_CPUFREQ
1920 config SYS_HAS_CPU_LOONGSON2E
1923 config SYS_HAS_CPU_LOONGSON2F
1925 select CPU_SUPPORTS_CPUFREQ
1926 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1928 config SYS_HAS_CPU_LOONGSON1B
1931 config SYS_HAS_CPU_LOONGSON1C
1934 config SYS_HAS_CPU_MIPS32_R1
1937 config SYS_HAS_CPU_MIPS32_R2
1940 config SYS_HAS_CPU_MIPS32_R3_5
1943 config SYS_HAS_CPU_MIPS32_R5
1945 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1947 config SYS_HAS_CPU_MIPS32_R6
1949 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1951 config SYS_HAS_CPU_MIPS64_R1
1954 config SYS_HAS_CPU_MIPS64_R2
1957 config SYS_HAS_CPU_MIPS64_R6
1959 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1961 config SYS_HAS_CPU_P5600
1963 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1965 config SYS_HAS_CPU_R3000
1968 config SYS_HAS_CPU_TX39XX
1971 config SYS_HAS_CPU_VR41XX
1974 config SYS_HAS_CPU_R4X00
1977 config SYS_HAS_CPU_TX49XX
1980 config SYS_HAS_CPU_R5000
1983 config SYS_HAS_CPU_R5500
1986 config SYS_HAS_CPU_NEVADA
1989 config SYS_HAS_CPU_R10000
1991 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993 config SYS_HAS_CPU_RM7000
1996 config SYS_HAS_CPU_SB1
1999 config SYS_HAS_CPU_CAVIUM_OCTEON
2002 config SYS_HAS_CPU_BMIPS
2005 config SYS_HAS_CPU_BMIPS32_3300
2007 select SYS_HAS_CPU_BMIPS
2009 config SYS_HAS_CPU_BMIPS4350
2011 select SYS_HAS_CPU_BMIPS
2013 config SYS_HAS_CPU_BMIPS4380
2015 select SYS_HAS_CPU_BMIPS
2017 config SYS_HAS_CPU_BMIPS5000
2019 select SYS_HAS_CPU_BMIPS
2020 select ARCH_HAS_SYNC_DMA_FOR_CPU
2022 config SYS_HAS_CPU_XLR
2025 config SYS_HAS_CPU_XLP
2029 # CPU may reorder R->R, R->W, W->R, W->W
2030 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2032 config WEAK_ORDERING
2036 # CPU may reorder reads and writes beyond LL/SC
2037 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2039 config WEAK_REORDERING_BEYOND_LLSC
2044 # These two indicate any level of the MIPS32 and MIPS64 architecture
2048 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2049 CPU_MIPS32_R6 || CPU_P5600
2053 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2057 # These indicate the revision of the architecture
2061 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2065 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2067 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2072 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2074 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2079 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2081 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2082 select HAVE_ARCH_BITREVERSE
2083 select MIPS_ASID_BITS_VARIABLE
2084 select MIPS_CRC_SUPPORT
2087 config TARGET_ISA_REV
2089 default 1 if CPU_MIPSR1
2090 default 2 if CPU_MIPSR2
2091 default 5 if CPU_MIPSR5
2092 default 6 if CPU_MIPSR6
2095 Reflects the ISA revision being targeted by the kernel build. This
2096 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2104 config SYS_SUPPORTS_32BIT_KERNEL
2106 config SYS_SUPPORTS_64BIT_KERNEL
2108 config CPU_SUPPORTS_32BIT_KERNEL
2110 config CPU_SUPPORTS_64BIT_KERNEL
2112 config CPU_SUPPORTS_CPUFREQ
2114 config CPU_SUPPORTS_ADDRWINCFG
2116 config CPU_SUPPORTS_HUGEPAGES
2118 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2119 config MIPS_PGD_C0_CONTEXT
2121 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2124 # Set to y for ptrace access to watch registers.
2126 config HARDWARE_WATCHPOINTS
2128 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2133 prompt "Kernel code model"
2135 You should only select this option if you have a workload that
2136 actually benefits from 64-bit processing or if your machine has
2137 large memory. You will only be presented a single option in this
2138 menu if your system does not support both 32-bit and 64-bit kernels.
2141 bool "32-bit kernel"
2142 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2145 Select this option if you want to build a 32-bit kernel.
2148 bool "64-bit kernel"
2149 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2151 Select this option if you want to build a 64-bit kernel.
2156 bool "KVM Guest Kernel"
2157 depends on CPU_MIPS32_R2
2158 depends on BROKEN_ON_SMP
2160 Select this option if building a guest kernel for KVM (Trap & Emulate)
2163 config KVM_GUEST_TIMER_FREQ
2164 int "Count/Compare Timer Frequency (MHz)"
2165 depends on KVM_GUEST
2168 Set this to non-zero if building a guest kernel for KVM to skip RTC
2169 emulation when determining guest CPU Frequency. Instead, the guest's
2170 timer frequency is specified directly.
2172 config MIPS_VA_BITS_48
2173 bool "48 bits virtual memory"
2176 Support a maximum at least 48 bits of application virtual
2177 memory. Default is 40 bits or less, depending on the CPU.
2178 For page sizes 16k and above, this option results in a small
2179 memory overhead for page tables. For 4k page size, a fourth
2180 level of page tables is added which imposes both a memory
2181 overhead as well as slower TLB fault handling.
2186 prompt "Kernel page size"
2187 default PAGE_SIZE_4KB
2189 config PAGE_SIZE_4KB
2191 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2193 This option select the standard 4kB Linux page size. On some
2194 R3000-family processors this is the only available page size. Using
2195 4kB page size will minimize memory consumption and is therefore
2196 recommended for low memory systems.
2198 config PAGE_SIZE_8KB
2200 depends on CPU_CAVIUM_OCTEON
2201 depends on !MIPS_VA_BITS_48
2203 Using 8kB page size will result in higher performance kernel at
2204 the price of higher memory consumption. This option is available
2205 only on cnMIPS processors. Note that you will need a suitable Linux
2206 distribution to support this.
2208 config PAGE_SIZE_16KB
2210 depends on !CPU_R3000 && !CPU_TX39XX
2212 Using 16kB page size will result in higher performance kernel at
2213 the price of higher memory consumption. This option is available on
2214 all non-R3000 family processors. Note that you will need a suitable
2215 Linux distribution to support this.
2217 config PAGE_SIZE_32KB
2219 depends on CPU_CAVIUM_OCTEON
2220 depends on !MIPS_VA_BITS_48
2222 Using 32kB page size will result in higher performance kernel at
2223 the price of higher memory consumption. This option is available
2224 only on cnMIPS cores. Note that you will need a suitable Linux
2225 distribution to support this.
2227 config PAGE_SIZE_64KB
2229 depends on !CPU_R3000 && !CPU_TX39XX
2231 Using 64kB page size will result in higher performance kernel at
2232 the price of higher memory consumption. This option is available on
2233 all non-R3000 family processor. Not that at the time of this
2234 writing this option is still high experimental.
2238 config FORCE_MAX_ZONEORDER
2239 int "Maximum zone order"
2240 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2241 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2242 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2243 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2244 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2245 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2249 The kernel memory allocator divides physically contiguous memory
2250 blocks into "zones", where each zone is a power of two number of
2251 pages. This option selects the largest power of two that the kernel
2252 keeps in the memory allocator. If you need to allocate very large
2253 blocks of physically contiguous memory, then you may need to
2254 increase this value.
2256 This config option is actually maximum order plus one. For example,
2257 a value of 11 means that the largest free memory block is 2^10 pages.
2259 The page size is not necessarily 4KB. Keep this in mind
2260 when choosing a value for this option.
2265 config IP22_CPU_SCACHE
2270 # Support for a MIPS32 / MIPS64 style S-caches
2272 config MIPS_CPU_SCACHE
2276 config R5000_CPU_SCACHE
2280 config RM7000_CPU_SCACHE
2284 config SIBYTE_DMA_PAGEOPS
2285 bool "Use DMA to clear/copy pages"
2288 Instead of using the CPU to zero and copy pages, use a Data Mover
2289 channel. These DMA channels are otherwise unused by the standard
2290 SiByte Linux port. Seems to give a small performance benefit.
2292 config CPU_HAS_PREFETCH
2295 config CPU_GENERIC_DUMP_TLB
2297 default y if !(CPU_R3000 || CPU_TX39XX)
2299 config MIPS_FP_SUPPORT
2300 bool "Floating Point support" if EXPERT
2303 Select y to include support for floating point in the kernel
2304 including initialization of FPU hardware, FP context save & restore
2305 and emulation of an FPU where necessary. Without this support any
2306 userland program attempting to use floating point instructions will
2309 If you know that your userland will not attempt to use floating point
2310 instructions then you can say n here to shrink the kernel a little.
2314 config CPU_R2300_FPU
2316 depends on MIPS_FP_SUPPORT
2317 default y if CPU_R3000 || CPU_TX39XX
2324 depends on MIPS_FP_SUPPORT
2325 default y if !CPU_R2300_FPU
2327 config CPU_R4K_CACHE_TLB
2329 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2332 bool "MIPS MT SMP support (1 TC on each available VPE)"
2334 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2335 select CPU_MIPSR2_IRQ_VI
2336 select CPU_MIPSR2_IRQ_EI
2341 select SYS_SUPPORTS_SMP
2342 select SYS_SUPPORTS_SCHED_SMT
2343 select MIPS_PERF_SHARED_TC_COUNTERS
2345 This is a kernel model which is known as SMVP. This is supported
2346 on cores with the MT ASE and uses the available VPEs to implement
2347 virtual processors which supports SMP. This is equivalent to the
2348 Intel Hyperthreading feature. For further information go to
2349 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2355 bool "SMT (multithreading) scheduler support"
2356 depends on SYS_SUPPORTS_SCHED_SMT
2359 SMT scheduler support improves the CPU scheduler's decision making
2360 when dealing with MIPS MT enabled cores at a cost of slightly
2361 increased overhead in some places. If unsure say N here.
2363 config SYS_SUPPORTS_SCHED_SMT
2366 config SYS_SUPPORTS_MULTITHREADING
2369 config MIPS_MT_FPAFF
2370 bool "Dynamic FPU affinity for FP-intensive threads"
2372 depends on MIPS_MT_SMP
2374 config MIPSR2_TO_R6_EMULATOR
2375 bool "MIPS R2-to-R6 emulator"
2376 depends on CPU_MIPSR6
2377 depends on MIPS_FP_SUPPORT
2380 Choose this option if you want to run non-R6 MIPS userland code.
2381 Even if you say 'Y' here, the emulator will still be disabled by
2382 default. You can enable it using the 'mipsr2emu' kernel option.
2383 The only reason this is a build-time option is to save ~14K from the
2386 config SYS_SUPPORTS_VPE_LOADER
2388 depends on SYS_SUPPORTS_MULTITHREADING
2390 Indicates that the platform supports the VPE loader, and provides
2393 config MIPS_VPE_LOADER
2394 bool "VPE loader support."
2395 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2396 select CPU_MIPSR2_IRQ_VI
2397 select CPU_MIPSR2_IRQ_EI
2400 Includes a loader for loading an elf relocatable object
2401 onto another VPE and running it.
2403 config MIPS_VPE_LOADER_CMP
2406 depends on MIPS_VPE_LOADER && MIPS_CMP
2408 config MIPS_VPE_LOADER_MT
2411 depends on MIPS_VPE_LOADER && !MIPS_CMP
2413 config MIPS_VPE_LOADER_TOM
2414 bool "Load VPE program into memory hidden from linux"
2415 depends on MIPS_VPE_LOADER
2418 The loader can use memory that is present but has been hidden from
2419 Linux using the kernel command line option "mem=xxMB". It's up to
2420 you to ensure the amount you put in the option and the space your
2421 program requires is less or equal to the amount physically present.
2423 config MIPS_VPE_APSP_API
2424 bool "Enable support for AP/SP API (RTLX)"
2425 depends on MIPS_VPE_LOADER
2427 config MIPS_VPE_APSP_API_CMP
2430 depends on MIPS_VPE_APSP_API && MIPS_CMP
2432 config MIPS_VPE_APSP_API_MT
2435 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2438 bool "MIPS CMP framework support (DEPRECATED)"
2439 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2442 select SYS_SUPPORTS_SMP
2443 select WEAK_ORDERING
2446 Select this if you are using a bootloader which implements the "CMP
2447 framework" protocol (ie. YAMON) and want your kernel to make use of
2448 its ability to start secondary CPUs.
2450 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2454 bool "MIPS Coherent Processing System support"
2455 depends on SYS_SUPPORTS_MIPS_CPS
2457 select MIPS_CPS_PM if HOTPLUG_CPU
2459 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2460 select SYS_SUPPORTS_HOTPLUG_CPU
2461 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2462 select SYS_SUPPORTS_SMP
2463 select WEAK_ORDERING
2465 Select this if you wish to run an SMP kernel across multiple cores
2466 within a MIPS Coherent Processing System. When this option is
2467 enabled the kernel will probe for other cores and boot them with
2468 no external assistance. It is safe to enable this when hardware
2469 support is unavailable.
2482 config SB1_PASS_2_WORKAROUNDS
2484 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2487 config SB1_PASS_2_1_WORKAROUNDS
2489 depends on CPU_SB1 && CPU_SB1_PASS_2
2493 prompt "SmartMIPS or microMIPS ASE support"
2495 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2498 Select this if you want neither microMIPS nor SmartMIPS support
2500 config CPU_HAS_SMARTMIPS
2501 depends on SYS_SUPPORTS_SMARTMIPS
2504 SmartMIPS is a extension of the MIPS32 architecture aimed at
2505 increased security at both hardware and software level for
2506 smartcards. Enabling this option will allow proper use of the
2507 SmartMIPS instructions by Linux applications. However a kernel with
2508 this option will not work on a MIPS core without SmartMIPS core. If
2509 you don't know you probably don't have SmartMIPS and should say N
2512 config CPU_MICROMIPS
2513 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2516 When this option is enabled the kernel will be built using the
2522 bool "Support for the MIPS SIMD Architecture"
2523 depends on CPU_SUPPORTS_MSA
2524 depends on MIPS_FP_SUPPORT
2525 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2527 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2528 and a set of SIMD instructions to operate on them. When this option
2529 is enabled the kernel will support allocating & switching MSA
2530 vector register contexts. If you know that your kernel will only be
2531 running on CPUs which do not support MSA or that your userland will
2532 not be making use of it then you may wish to say N here to reduce
2533 the size & complexity of your kernel.
2544 depends on !CPU_DIEI_BROKEN
2547 config CPU_DIEI_BROKEN
2553 config CPU_NO_LOAD_STORE_LR
2556 CPU lacks support for unaligned load and store instructions:
2557 LWL, LWR, SWL, SWR (Load/store word left/right).
2558 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2562 # Vectored interrupt mode is an R2 feature
2564 config CPU_MIPSR2_IRQ_VI
2568 # Extended interrupt mode is an R2 feature
2570 config CPU_MIPSR2_IRQ_EI
2575 depends on !CPU_R3000
2581 config CPU_DADDI_WORKAROUNDS
2584 config CPU_R4000_WORKAROUNDS
2586 select CPU_R4400_WORKAROUNDS
2588 config CPU_R4400_WORKAROUNDS
2591 config CPU_R4X00_BUGS64
2593 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2595 config MIPS_ASID_SHIFT
2597 default 6 if CPU_R3000 || CPU_TX39XX
2600 config MIPS_ASID_BITS
2602 default 0 if MIPS_ASID_BITS_VARIABLE
2603 default 6 if CPU_R3000 || CPU_TX39XX
2606 config MIPS_ASID_BITS_VARIABLE
2609 config MIPS_CRC_SUPPORT
2612 # R4600 erratum. Due to the lack of errata information the exact
2613 # technical details aren't known. I've experimentally found that disabling
2614 # interrupts during indexed I-cache flushes seems to be sufficient to deal
2616 config WAR_R4600_V1_INDEX_ICACHEOP
2619 # Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata:
2621 # 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
2622 # Hit_Invalidate_D and Create_Dirty_Excl_D should only be
2623 # executed if there is no other dcache activity. If the dcache is
2624 # accessed for another instruction immeidately preceding when these
2625 # cache instructions are executing, it is possible that the dcache
2626 # tag match outputs used by these cache instructions will be
2627 # incorrect. These cache instructions should be preceded by at least
2628 # four instructions that are not any kind of load or store
2631 # This is not allowed: lw
2635 # cache Hit_Writeback_Invalidate_D
2637 # This is allowed: lw
2642 # cache Hit_Writeback_Invalidate_D
2643 config WAR_R4600_V1_HIT_CACHEOP
2647 # - Highmem only makes sense for the 32-bit kernel.
2648 # - The current highmem code will only work properly on physically indexed
2649 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2650 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2651 # moment we protect the user and offer the highmem option only on machines
2652 # where it's known to be safe. This will not offer highmem on a few systems
2653 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2654 # indexed CPUs but we're playing safe.
2655 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2656 # know they might have memory configurations that could make use of highmem
2660 bool "High Memory Support"
2661 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2663 config CPU_SUPPORTS_HIGHMEM
2666 config SYS_SUPPORTS_HIGHMEM
2669 config SYS_SUPPORTS_SMARTMIPS
2672 config SYS_SUPPORTS_MICROMIPS
2675 config SYS_SUPPORTS_MIPS16
2678 This option must be set if a kernel might be executed on a MIPS16-
2679 enabled CPU even if MIPS16 is not actually being used. In other
2680 words, it makes the kernel MIPS16-tolerant.
2682 config CPU_SUPPORTS_MSA
2685 config ARCH_FLATMEM_ENABLE
2687 depends on !NUMA && !CPU_LOONGSON2EF
2689 config ARCH_SPARSEMEM_ENABLE
2691 select SPARSEMEM_STATIC if !SGI_IP27
2695 depends on SYS_SUPPORTS_NUMA
2697 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2698 Access). This option improves performance on systems with more
2699 than two nodes; on two node systems it is generally better to
2700 leave it disabled; on single node systems leave this option
2703 config SYS_SUPPORTS_NUMA
2706 config HAVE_SETUP_PER_CPU_AREA
2710 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2715 bool "Relocatable kernel"
2716 depends on SYS_SUPPORTS_RELOCATABLE
2717 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2718 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2719 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2720 CPU_P5600 || CAVIUM_OCTEON_SOC
2722 This builds a kernel image that retains relocation information
2723 so it can be loaded someplace besides the default 1MB.
2724 The relocations make the kernel binary about 15% larger,
2725 but are discarded at runtime
2727 config RELOCATION_TABLE_SIZE
2728 hex "Relocation table size"
2729 depends on RELOCATABLE
2730 range 0x0 0x01000000
2731 default "0x00100000"
2733 A table of relocation data will be appended to the kernel binary
2734 and parsed at boot to fix up the relocated kernel.
2736 This option allows the amount of space reserved for the table to be
2737 adjusted, although the default of 1Mb should be ok in most cases.
2739 The build will fail and a valid size suggested if this is too small.
2741 If unsure, leave at the default value.
2743 config RANDOMIZE_BASE
2744 bool "Randomize the address of the kernel image"
2745 depends on RELOCATABLE
2747 Randomizes the physical and virtual address at which the
2748 kernel image is loaded, as a security feature that
2749 deters exploit attempts relying on knowledge of the location
2750 of kernel internals.
2752 Entropy is generated using any coprocessor 0 registers available.
2754 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2758 config RANDOMIZE_BASE_MAX_OFFSET
2759 hex "Maximum kASLR offset" if EXPERT
2760 depends on RANDOMIZE_BASE
2761 range 0x0 0x40000000 if EVA || 64BIT
2762 range 0x0 0x08000000
2763 default "0x01000000"
2765 When kASLR is active, this provides the maximum offset that will
2766 be applied to the kernel image. It should be set according to the
2767 amount of physical RAM available in the target system minus
2768 PHYSICAL_START and must be a power of 2.
2770 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2771 EVA or 64-bit. The default is 16Mb.
2776 depends on NEED_MULTIPLE_NODES
2778 config HW_PERF_EVENTS
2779 bool "Enable hardware performance counter support for perf events"
2780 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2783 Enable hardware performance counter support for perf events. If
2784 disabled, perf events will use software events only.
2787 bool "Enable DMI scanning"
2788 depends on MACH_LOONGSON64
2789 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2792 Enabled scanning of DMI to identify machine quirks. Say Y
2793 here unless you have verified that your setup is not
2794 affected by entries in the DMI blacklist. Required by PNP
2798 bool "Multi-Processing support"
2799 depends on SYS_SUPPORTS_SMP
2801 This enables support for systems with more than one CPU. If you have
2802 a system with only one CPU, say N. If you have a system with more
2803 than one CPU, say Y.
2805 If you say N here, the kernel will run on uni- and multiprocessor
2806 machines, but will use only one CPU of a multiprocessor machine. If
2807 you say Y here, the kernel will run on many, but not all,
2808 uniprocessor machines. On a uniprocessor machine, the kernel
2809 will run faster if you say N here.
2811 People using multiprocessor machines who say Y here should also say
2812 Y to "Enhanced Real Time Clock Support", below.
2814 See also the SMP-HOWTO available at
2815 <https://www.tldp.org/docs.html#howto>.
2817 If you don't know what to do here, say N.
2820 bool "Support for hot-pluggable CPUs"
2821 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2823 Say Y here to allow turning CPUs off and on. CPUs can be
2824 controlled through /sys/devices/system/cpu.
2825 (Note: power management support will enable this option
2826 automatically on SMP systems. )
2827 Say N if you want to disable CPU hotplug.
2832 config SYS_SUPPORTS_MIPS_CMP
2835 config SYS_SUPPORTS_MIPS_CPS
2838 config SYS_SUPPORTS_SMP
2841 config NR_CPUS_DEFAULT_4
2844 config NR_CPUS_DEFAULT_8
2847 config NR_CPUS_DEFAULT_16
2850 config NR_CPUS_DEFAULT_32
2853 config NR_CPUS_DEFAULT_64
2857 int "Maximum number of CPUs (2-256)"
2860 default "4" if NR_CPUS_DEFAULT_4
2861 default "8" if NR_CPUS_DEFAULT_8
2862 default "16" if NR_CPUS_DEFAULT_16
2863 default "32" if NR_CPUS_DEFAULT_32
2864 default "64" if NR_CPUS_DEFAULT_64
2866 This allows you to specify the maximum number of CPUs which this
2867 kernel will support. The maximum supported value is 32 for 32-bit
2868 kernel and 64 for 64-bit kernels; the minimum value which makes
2869 sense is 1 for Qemu (useful only for kernel debugging purposes)
2870 and 2 for all others.
2872 This is purely to save memory - each supported CPU adds
2873 approximately eight kilobytes to the kernel image. For best
2874 performance should round up your number of processors to the next
2877 config MIPS_PERF_SHARED_TC_COUNTERS
2880 config MIPS_NR_CPU_NR_MAP_1024
2883 config MIPS_NR_CPU_NR_MAP
2886 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2887 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2890 # Timer Interrupt Frequency Configuration
2894 prompt "Timer frequency"
2897 Allows the configuration of the timer frequency.
2900 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2903 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2906 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2909 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2912 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2915 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2918 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2921 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2925 config SYS_SUPPORTS_24HZ
2928 config SYS_SUPPORTS_48HZ
2931 config SYS_SUPPORTS_100HZ
2934 config SYS_SUPPORTS_128HZ
2937 config SYS_SUPPORTS_250HZ
2940 config SYS_SUPPORTS_256HZ
2943 config SYS_SUPPORTS_1000HZ
2946 config SYS_SUPPORTS_1024HZ
2949 config SYS_SUPPORTS_ARBIT_HZ
2951 default y if !SYS_SUPPORTS_24HZ && \
2952 !SYS_SUPPORTS_48HZ && \
2953 !SYS_SUPPORTS_100HZ && \
2954 !SYS_SUPPORTS_128HZ && \
2955 !SYS_SUPPORTS_250HZ && \
2956 !SYS_SUPPORTS_256HZ && \
2957 !SYS_SUPPORTS_1000HZ && \
2958 !SYS_SUPPORTS_1024HZ
2964 default 100 if HZ_100
2965 default 128 if HZ_128
2966 default 250 if HZ_250
2967 default 256 if HZ_256
2968 default 1000 if HZ_1000
2969 default 1024 if HZ_1024
2972 def_bool HIGH_RES_TIMERS
2975 bool "Kexec system call"
2978 kexec is a system call that implements the ability to shutdown your
2979 current kernel, and to start another kernel. It is like a reboot
2980 but it is independent of the system firmware. And like a reboot
2981 you can start any kernel with it, not just Linux.
2983 The name comes from the similarity to the exec system call.
2985 It is an ongoing process to be certain the hardware in a machine
2986 is properly shutdown, so do not be surprised if this code does not
2987 initially work for you. As of this writing the exact hardware
2988 interface is strongly in flux, so no good recommendation can be
2992 bool "Kernel crash dumps"
2994 Generate crash dump after being started by kexec.
2995 This should be normally only set in special crash dump kernels
2996 which are loaded in the main kernel with kexec-tools into
2997 a specially reserved region and then later executed after
2998 a crash by kdump/kexec. The crash dump kernel must be compiled
2999 to a memory address not used by the main kernel or firmware using
3002 config PHYSICAL_START
3003 hex "Physical address where the kernel is loaded"
3004 default "0xffffffff84000000"
3005 depends on CRASH_DUMP
3007 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3008 If you plan to use kernel for capturing the crash dump change
3009 this value to start of the reserved region (the "X" value as
3010 specified in the "crashkernel=YM@XM" command line boot parameter
3011 passed to the panic-ed kernel).
3014 bool "Enable seccomp to safely compute untrusted bytecode"
3018 This kernel feature is useful for number crunching applications
3019 that may need to compute untrusted bytecode during their
3020 execution. By using pipes or other transports made available to
3021 the process as file descriptors supporting the read/write
3022 syscalls, it's possible to isolate those applications in
3023 their own address space using seccomp. Once seccomp is
3024 enabled via /proc/<pid>/seccomp, it cannot be disabled
3025 and the task is only allowed to execute a few safe syscalls
3026 defined by each seccomp mode.
3028 If unsure, say Y. Only embedded should say N here.
3030 config MIPS_O32_FP64_SUPPORT
3031 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3032 depends on 32BIT || MIPS32_O32
3034 When this is enabled, the kernel will support use of 64-bit floating
3035 point registers with binaries using the O32 ABI along with the
3036 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3037 32-bit MIPS systems this support is at the cost of increasing the
3038 size and complexity of the compiled FPU emulator. Thus if you are
3039 running a MIPS32 system and know that none of your userland binaries
3040 will require 64-bit floating point, you may wish to reduce the size
3041 of your kernel & potentially improve FP emulation performance by
3044 Although binutils currently supports use of this flag the details
3045 concerning its effect upon the O32 ABI in userland are still being
3046 worked on. In order to avoid userland becoming dependant upon current
3047 behaviour before the details have been finalised, this option should
3048 be considered experimental and only enabled by those working upon
3056 select OF_EARLY_FLATTREE
3066 prompt "Kernel appended dtb support" if USE_OF
3067 default MIPS_NO_APPENDED_DTB
3069 config MIPS_NO_APPENDED_DTB
3072 Do not enable appended dtb support.
3074 config MIPS_ELF_APPENDED_DTB
3077 With this option, the boot code will look for a device tree binary
3078 DTB) included in the vmlinux ELF section .appended_dtb. By default
3079 it is empty and the DTB can be appended using binutils command
3082 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3084 This is meant as a backward compatiblity convenience for those
3085 systems with a bootloader that can't be upgraded to accommodate
3086 the documented boot protocol using a device tree.
3088 config MIPS_RAW_APPENDED_DTB
3089 bool "vmlinux.bin or vmlinuz.bin"
3091 With this option, the boot code will look for a device tree binary
3092 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3093 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3095 This is meant as a backward compatibility convenience for those
3096 systems with a bootloader that can't be upgraded to accommodate
3097 the documented boot protocol using a device tree.
3099 Beware that there is very little in terms of protection against
3100 this option being confused by leftover garbage in memory that might
3101 look like a DTB header after a reboot if no actual DTB is appended
3102 to vmlinux.bin. Do not leave this option active in a production kernel
3103 if you don't intend to always append a DTB.
3107 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3108 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3109 !MACH_LOONGSON64 && !MIPS_MALTA && \
3111 default MIPS_CMDLINE_FROM_BOOTLOADER
3113 config MIPS_CMDLINE_FROM_DTB
3115 bool "Dtb kernel arguments if available"
3117 config MIPS_CMDLINE_DTB_EXTEND
3119 bool "Extend dtb kernel arguments with bootloader arguments"
3121 config MIPS_CMDLINE_FROM_BOOTLOADER
3122 bool "Bootloader kernel arguments if available"
3124 config MIPS_CMDLINE_BUILTIN_EXTEND
3125 depends on CMDLINE_BOOL
3126 bool "Extend builtin kernel arguments with bootloader arguments"
3131 config LOCKDEP_SUPPORT
3135 config STACKTRACE_SUPPORT
3139 config PGTABLE_LEVELS
3141 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3142 default 3 if 64BIT && !PAGE_SIZE_64KB
3145 config MIPS_AUTO_PFN_OFFSET
3148 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3150 config PCI_DRIVERS_GENERIC
3151 select PCI_DOMAINS_GENERIC if PCI
3154 config PCI_DRIVERS_LEGACY
3155 def_bool !PCI_DRIVERS_GENERIC
3156 select NO_GENERIC_PCI_IOPORT_MAP
3157 select PCI_DOMAINS if PCI
3160 # ISA support is now enabled via select. Too many systems still have the one
3161 # or other ISA chip on the board that users don't know about so don't expect
3162 # users to choose the right thing ...
3168 bool "TURBOchannel support"
3169 depends on MACH_DECSTATION
3171 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3172 processors. TURBOchannel programming specifications are available
3174 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3176 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3177 Linux driver support status is documented at:
3178 <http://www.linux-mips.org/wiki/DECstation>
3184 config ARCH_MMAP_RND_BITS_MIN
3188 config ARCH_MMAP_RND_BITS_MAX
3192 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3195 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3202 select MIPS_EXTERNAL_TIMER
3215 config MIPS32_COMPAT
3221 config SYSVIPC_COMPAT
3225 bool "Kernel support for o32 binaries"
3227 select ARCH_WANT_OLD_COMPAT_IPC
3229 select MIPS32_COMPAT
3230 select SYSVIPC_COMPAT if SYSVIPC
3232 Select this option if you want to run o32 binaries. These are pure
3233 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3234 existing binaries are in this format.
3239 bool "Kernel support for n32 binaries"
3241 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3243 select MIPS32_COMPAT
3244 select SYSVIPC_COMPAT if SYSVIPC
3246 Select this option if you want to run n32 binaries. These are
3247 64-bit binaries using 32-bit quantities for addressing and certain
3248 data that would normally be 64-bit. They are used in special
3255 default y if MIPS32_O32 || MIPS32_N32
3258 menu "Power management options"
3260 config ARCH_HIBERNATION_POSSIBLE
3262 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3264 config ARCH_SUSPEND_POSSIBLE
3266 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3268 source "kernel/power/Kconfig"
3272 config MIPS_EXTERNAL_TIMER
3275 menu "CPU Power Management"
3277 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3278 source "drivers/cpufreq/Kconfig"
3281 source "drivers/cpuidle/Kconfig"
3285 source "drivers/firmware/Kconfig"
3287 source "arch/mips/kvm/Kconfig"
3289 source "arch/mips/vdso/Kconfig"