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_COPY_THREAD_TLS
55 select HAVE_C_RECORDMCOUNT
56 select HAVE_DEBUG_KMEMLEAK
57 select HAVE_DEBUG_STACKOVERFLOW
58 select HAVE_DMA_CONTIGUOUS
59 select HAVE_DYNAMIC_FTRACE
60 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
61 select HAVE_EXIT_THREAD
63 select HAVE_FTRACE_MCOUNT_RECORD
64 select HAVE_FUNCTION_GRAPH_TRACER
65 select HAVE_FUNCTION_TRACER
66 select HAVE_GCC_PLUGINS
67 select HAVE_GENERIC_VDSO
69 select HAVE_IOREMAP_PROT
70 select HAVE_IRQ_EXIT_ON_IRQ_STACK
71 select HAVE_IRQ_TIME_ACCOUNTING
73 select HAVE_KRETPROBES
74 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
75 select HAVE_MOD_ARCH_SPECIFIC
78 select HAVE_PERF_EVENTS
79 select HAVE_REGS_AND_STACK_ACCESS_API
81 select HAVE_SPARSE_SYSCALL_NR
82 select HAVE_STACKPROTECTOR
83 select HAVE_SYSCALL_TRACEPOINTS
84 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
85 select IRQ_FORCED_THREADING
87 select MODULES_USE_ELF_REL if MODULES
88 select MODULES_USE_ELF_RELA if MODULES && 64BIT
89 select PERF_USE_VMALLOC
91 select SYSCTL_EXCEPTION_TRACE
94 config MIPS_FIXUP_BIGPHYS_ADDR
97 menu "Machine selection"
104 bool "Generic board-agnostic MIPS kernel"
108 select CLKSRC_MIPS_GIC
110 select CPU_MIPSR2_IRQ_EI
111 select CPU_MIPSR2_IRQ_VI
113 select DMA_PERDEV_COHERENT
116 select MIPS_AUTO_PFN_OFFSET
117 select MIPS_CPU_SCACHE
119 select MIPS_L1_CACHE_SHIFT_7
120 select NO_EXCEPT_FILL
121 select PCI_DRIVERS_GENERIC
124 select SYS_HAS_CPU_MIPS32_R1
125 select SYS_HAS_CPU_MIPS32_R2
126 select SYS_HAS_CPU_MIPS32_R6
127 select SYS_HAS_CPU_MIPS64_R1
128 select SYS_HAS_CPU_MIPS64_R2
129 select SYS_HAS_CPU_MIPS64_R6
130 select SYS_SUPPORTS_32BIT_KERNEL
131 select SYS_SUPPORTS_64BIT_KERNEL
132 select SYS_SUPPORTS_BIG_ENDIAN
133 select SYS_SUPPORTS_HIGHMEM
134 select SYS_SUPPORTS_LITTLE_ENDIAN
135 select SYS_SUPPORTS_MICROMIPS
136 select SYS_SUPPORTS_MIPS16
137 select SYS_SUPPORTS_MIPS_CPS
138 select SYS_SUPPORTS_MULTITHREADING
139 select SYS_SUPPORTS_RELOCATABLE
140 select SYS_SUPPORTS_SMARTMIPS
142 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
143 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
144 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
145 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
146 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
147 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
150 Select this to build a kernel which aims to support multiple boards,
151 generally using a flattened device tree passed from the bootloader
152 using the boot protocol defined in the UHI (Unified Hosting
153 Interface) specification.
156 bool "Alchemy processor based machines"
157 select PHYS_ADDR_T_64BIT
161 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
162 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
163 select SYS_HAS_CPU_MIPS32_R1
164 select SYS_SUPPORTS_32BIT_KERNEL
165 select SYS_SUPPORTS_APM_EMULATION
167 select SYS_SUPPORTS_ZBOOT
171 bool "Texas Instruments AR7"
173 select DMA_NONCOHERENT
177 select NO_EXCEPT_FILL
179 select SYS_HAS_CPU_MIPS32_R1
180 select SYS_HAS_EARLY_PRINTK
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_SUPPORTS_LITTLE_ENDIAN
183 select SYS_SUPPORTS_MIPS16
184 select SYS_SUPPORTS_ZBOOT_UART16550
189 Support for the Texas Instruments AR7 System-on-a-Chip
190 family: TNETD7100, 7200 and 7300.
193 bool "Atheros AR231x/AR531x SoC support"
196 select DMA_NONCOHERENT
199 select SYS_HAS_CPU_MIPS32_R1
200 select SYS_SUPPORTS_BIG_ENDIAN
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_HAS_EARLY_PRINTK
204 Support for Atheros AR231x and Atheros AR531x based boards
207 bool "Atheros AR71XX/AR724X/AR913X based boards"
208 select ARCH_HAS_RESET_CONTROLLER
212 select DMA_NONCOHERENT
219 select SYS_HAS_CPU_MIPS32_R2
220 select SYS_HAS_EARLY_PRINTK
221 select SYS_SUPPORTS_32BIT_KERNEL
222 select SYS_SUPPORTS_BIG_ENDIAN
223 select SYS_SUPPORTS_MIPS16
224 select SYS_SUPPORTS_ZBOOT_UART_PROM
226 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
228 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
231 bool "Broadcom Generic BMIPS kernel"
232 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
233 select ARCH_HAS_PHYS_TO_DMA
235 select NO_EXCEPT_FILL
241 select BCM6345_L1_IRQ
242 select BCM7038_L1_IRQ
243 select BCM7120_L2_IRQ
244 select BRCMSTB_L2_IRQ
246 select DMA_NONCOHERENT
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_LITTLE_ENDIAN
249 select SYS_SUPPORTS_BIG_ENDIAN
250 select SYS_SUPPORTS_HIGHMEM
251 select SYS_HAS_CPU_BMIPS32_3300
252 select SYS_HAS_CPU_BMIPS4350
253 select SYS_HAS_CPU_BMIPS4380
254 select SYS_HAS_CPU_BMIPS5000
256 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
257 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
258 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
259 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
260 select HARDIRQS_SW_RESEND
262 Build a generic DT-based kernel image that boots on select
263 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
264 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
265 must be set appropriately for your board.
268 bool "Broadcom BCM47XX based boards"
272 select DMA_NONCOHERENT
275 select SYS_HAS_CPU_MIPS32_R1
276 select NO_EXCEPT_FILL
277 select SYS_SUPPORTS_32BIT_KERNEL
278 select SYS_SUPPORTS_LITTLE_ENDIAN
279 select SYS_SUPPORTS_MIPS16
280 select SYS_SUPPORTS_ZBOOT
281 select SYS_HAS_EARLY_PRINTK
282 select USE_GENERIC_EARLY_PRINTK_8250
284 select LEDS_GPIO_REGISTER
287 select BCM47XX_SSB if !BCM47XX_BCMA
289 Support for BCM47XX based boards
292 bool "Broadcom BCM63XX based boards"
297 select DMA_NONCOHERENT
299 select SYS_SUPPORTS_32BIT_KERNEL
300 select SYS_SUPPORTS_BIG_ENDIAN
301 select SYS_HAS_EARLY_PRINTK
305 select MIPS_L1_CACHE_SHIFT_4
308 Support for BCM63XX based boards
315 select DMA_NONCOHERENT
321 select PCI_GT64XXX_PCI0
322 select SYS_HAS_CPU_NEVADA
323 select SYS_HAS_EARLY_PRINTK
324 select SYS_SUPPORTS_32BIT_KERNEL
325 select SYS_SUPPORTS_64BIT_KERNEL
326 select SYS_SUPPORTS_LITTLE_ENDIAN
327 select USE_GENERIC_EARLY_PRINTK_8250
329 config MACH_DECSTATION
333 select CEVT_R4K if CPU_R4X00
335 select CSRC_R4K if CPU_R4X00
336 select CPU_DADDI_WORKAROUNDS if 64BIT
337 select CPU_R4000_WORKAROUNDS if 64BIT
338 select CPU_R4400_WORKAROUNDS if 64BIT
339 select DMA_NONCOHERENT
342 select SYS_HAS_CPU_R3000
343 select SYS_HAS_CPU_R4X00
344 select SYS_SUPPORTS_32BIT_KERNEL
345 select SYS_SUPPORTS_64BIT_KERNEL
346 select SYS_SUPPORTS_LITTLE_ENDIAN
347 select SYS_SUPPORTS_128HZ
348 select SYS_SUPPORTS_256HZ
349 select SYS_SUPPORTS_1024HZ
350 select MIPS_L1_CACHE_SHIFT_4
352 This enables support for DEC's MIPS based workstations. For details
353 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
354 DECstation porting pages on <http://decstation.unix-ag.org/>.
356 If you have one of the following DECstation Models you definitely
357 want to choose R4xx0 for the CPU Type:
364 otherwise choose R3000.
367 bool "Jazz family of machines"
370 select ARCH_MIGHT_HAVE_PC_PARPORT
371 select ARCH_MIGHT_HAVE_PC_SERIO
374 select ARCH_MAY_HAVE_PC_FDC
377 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
378 select GENERIC_ISA_DMA
379 select HAVE_PCSPKR_PLATFORM
384 select SYS_HAS_CPU_R4X00
385 select SYS_SUPPORTS_32BIT_KERNEL
386 select SYS_SUPPORTS_64BIT_KERNEL
387 select SYS_SUPPORTS_100HZ
389 This a family of machines based on the MIPS R4030 chipset which was
390 used by several vendors to build RISC/os and Windows NT workstations.
391 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
392 Olivetti M700-10 workstations.
395 bool "Ingenic SoC based machines"
396 select SYS_SUPPORTS_32BIT_KERNEL
397 select SYS_SUPPORTS_LITTLE_ENDIAN
398 select SYS_SUPPORTS_ZBOOT_UART16550
399 select CPU_SUPPORTS_HUGEPAGES
400 select DMA_NONCOHERENT
405 select GENERIC_IRQ_CHIP
406 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
410 bool "Lantiq based platforms"
411 select DMA_NONCOHERENT
415 select SYS_HAS_CPU_MIPS32_R1
416 select SYS_HAS_CPU_MIPS32_R2
417 select SYS_SUPPORTS_BIG_ENDIAN
418 select SYS_SUPPORTS_32BIT_KERNEL
419 select SYS_SUPPORTS_MIPS16
420 select SYS_SUPPORTS_MULTITHREADING
421 select SYS_SUPPORTS_VPE_LOADER
422 select SYS_HAS_EARLY_PRINTK
429 select PINCTRL_LANTIQ
430 select ARCH_HAS_RESET_CONTROLLER
431 select RESET_CONTROLLER
433 config MACH_LOONGSON32
434 bool "Loongson 32-bit family of machines"
435 select SYS_SUPPORTS_ZBOOT
437 This enables support for the Loongson-1 family of machines.
439 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
440 the Institute of Computing Technology (ICT), Chinese Academy of
443 config MACH_LOONGSON2EF
444 bool "Loongson-2E/F family of machines"
445 select SYS_SUPPORTS_ZBOOT
447 This enables the support of early Loongson-2E/F family of machines.
449 config MACH_LOONGSON64
450 bool "Loongson 64-bit family of machines"
451 select ARCH_SPARSEMEM_ENABLE
452 select ARCH_MIGHT_HAVE_PC_PARPORT
453 select ARCH_MIGHT_HAVE_PC_SERIO
454 select GENERIC_ISA_DMA_SUPPORT_BROKEN
464 select NO_EXCEPT_FILL
465 select NR_CPUS_DEFAULT_64
466 select USE_GENERIC_EARLY_PRINTK_8250
467 select PCI_DRIVERS_GENERIC
468 select SYS_HAS_CPU_LOONGSON64
469 select SYS_HAS_EARLY_PRINTK
470 select SYS_SUPPORTS_SMP
471 select SYS_SUPPORTS_HOTPLUG_CPU
472 select SYS_SUPPORTS_NUMA
473 select SYS_SUPPORTS_64BIT_KERNEL
474 select SYS_SUPPORTS_HIGHMEM
475 select SYS_SUPPORTS_LITTLE_ENDIAN
476 select SYS_SUPPORTS_ZBOOT
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 "NXP STB220 board"
596 Support for NXP Semiconductors STB220 Development Board.
603 Support for NXP Semiconductors STB225 Development Board.
606 bool "Ralink based machines"
610 select DMA_NONCOHERENT
613 select SYS_HAS_CPU_MIPS32_R1
614 select SYS_HAS_CPU_MIPS32_R2
615 select SYS_SUPPORTS_32BIT_KERNEL
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select SYS_SUPPORTS_MIPS16
618 select SYS_HAS_EARLY_PRINTK
620 select ARCH_HAS_RESET_CONTROLLER
621 select RESET_CONTROLLER
624 bool "SGI IP22 (Indy/Indigo2)"
629 select ARCH_MIGHT_HAVE_PC_SERIO
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
638 select IP22_CPU_SCACHE
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
642 select SGI_HAS_INDYDOG
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
650 select SYS_HAS_EARLY_PRINTK
651 select SYS_SUPPORTS_32BIT_KERNEL
652 select SYS_SUPPORTS_64BIT_KERNEL
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select MIPS_L1_CACHE_SHIFT_7
656 This are the SGI Indy, Challenge S and Indigo2, as well as certain
657 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
658 that runs on these, say Y here.
661 bool "SGI IP27 (Origin200/2000)"
662 select ARCH_HAS_PHYS_TO_DMA
663 select ARCH_SPARSEMEM_ENABLE
666 select ARC_CMDLINE_ONLY
668 select DEFAULT_SGI_PARTITION
669 select SYS_HAS_EARLY_PRINTK
672 select IRQ_DOMAIN_HIERARCHY
673 select NR_CPUS_DEFAULT_64
674 select PCI_DRIVERS_GENERIC
675 select PCI_XTALK_BRIDGE
676 select SYS_HAS_CPU_R10000
677 select SYS_SUPPORTS_64BIT_KERNEL
678 select SYS_SUPPORTS_BIG_ENDIAN
679 select SYS_SUPPORTS_NUMA
680 select SYS_SUPPORTS_SMP
681 select MIPS_L1_CACHE_SHIFT_7
683 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
684 workstations. To compile a Linux kernel that runs on these, say Y
688 bool "SGI IP28 (Indigo2 R10k)"
693 select ARCH_MIGHT_HAVE_PC_SERIO
697 select DEFAULT_SGI_PARTITION
698 select DMA_NONCOHERENT
699 select GENERIC_ISA_DMA_SUPPORT_BROKEN
705 select SGI_HAS_INDYDOG
711 select SYS_HAS_CPU_R10000
712 select SYS_HAS_EARLY_PRINTK
713 select SYS_SUPPORTS_64BIT_KERNEL
714 select SYS_SUPPORTS_BIG_ENDIAN
715 select MIPS_L1_CACHE_SHIFT_7
717 This is the SGI Indigo2 with R10000 processor. To compile a Linux
718 kernel that runs on these, say Y here.
721 bool "SGI IP30 (Octane/Octane2)"
722 select ARCH_HAS_PHYS_TO_DMA
728 select SYNC_R4K if SMP
732 select IRQ_DOMAIN_HIERARCHY
733 select NR_CPUS_DEFAULT_2
734 select PCI_DRIVERS_GENERIC
735 select PCI_XTALK_BRIDGE
736 select SYS_HAS_EARLY_PRINTK
737 select SYS_HAS_CPU_R10000
738 select SYS_SUPPORTS_64BIT_KERNEL
739 select SYS_SUPPORTS_BIG_ENDIAN
740 select SYS_SUPPORTS_SMP
741 select MIPS_L1_CACHE_SHIFT_7
744 These are the SGI Octane and Octane2 graphics workstations. To
745 compile a Linux kernel that runs on these, say Y here.
751 select ARCH_HAS_PHYS_TO_DMA
757 select DMA_NONCOHERENT
760 select R5000_CPU_SCACHE
761 select RM7000_CPU_SCACHE
762 select SYS_HAS_CPU_R5000
763 select SYS_HAS_CPU_R10000 if BROKEN
764 select SYS_HAS_CPU_RM7000
765 select SYS_HAS_CPU_NEVADA
766 select SYS_SUPPORTS_64BIT_KERNEL
767 select SYS_SUPPORTS_BIG_ENDIAN
769 If you want this kernel to run on SGI O2 workstation, say Y here.
772 bool "Sibyte BCM91120C-CRhine"
774 select SIBYTE_BCM1120
776 select SYS_HAS_CPU_SB1
777 select SYS_SUPPORTS_BIG_ENDIAN
778 select SYS_SUPPORTS_LITTLE_ENDIAN
781 bool "Sibyte BCM91120x-Carmel"
783 select SIBYTE_BCM1120
785 select SYS_HAS_CPU_SB1
786 select SYS_SUPPORTS_BIG_ENDIAN
787 select SYS_SUPPORTS_LITTLE_ENDIAN
790 bool "Sibyte BCM91125C-CRhone"
792 select SIBYTE_BCM1125
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_HIGHMEM
797 select SYS_SUPPORTS_LITTLE_ENDIAN
800 bool "Sibyte BCM91125E-Rhone"
802 select SIBYTE_BCM1125H
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_LITTLE_ENDIAN
809 bool "Sibyte BCM91250A-SWARM"
811 select HAVE_PATA_PLATFORM
814 select SYS_HAS_CPU_SB1
815 select SYS_SUPPORTS_BIG_ENDIAN
816 select SYS_SUPPORTS_HIGHMEM
817 select SYS_SUPPORTS_LITTLE_ENDIAN
818 select ZONE_DMA32 if 64BIT
819 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
821 config SIBYTE_LITTLESUR
822 bool "Sibyte BCM91250C2-LittleSur"
824 select HAVE_PATA_PLATFORM
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_HIGHMEM
830 select SYS_SUPPORTS_LITTLE_ENDIAN
831 select ZONE_DMA32 if 64BIT
833 config SIBYTE_SENTOSA
834 bool "Sibyte BCM91250E-Sentosa"
838 select SYS_HAS_CPU_SB1
839 select SYS_SUPPORTS_BIG_ENDIAN
840 select SYS_SUPPORTS_LITTLE_ENDIAN
841 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
844 bool "Sibyte BCM91480B-BigSur"
846 select NR_CPUS_DEFAULT_4
847 select SIBYTE_BCM1x80
849 select SYS_HAS_CPU_SB1
850 select SYS_SUPPORTS_BIG_ENDIAN
851 select SYS_SUPPORTS_HIGHMEM
852 select SYS_SUPPORTS_LITTLE_ENDIAN
853 select ZONE_DMA32 if 64BIT
854 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
857 bool "SNI RM200/300/400"
860 select FW_ARC if CPU_LITTLE_ENDIAN
861 select FW_ARC32 if CPU_LITTLE_ENDIAN
862 select FW_SNIPROM if CPU_BIG_ENDIAN
863 select ARCH_MAY_HAVE_PC_FDC
864 select ARCH_MIGHT_HAVE_PC_PARPORT
865 select ARCH_MIGHT_HAVE_PC_SERIO
869 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
870 select DMA_NONCOHERENT
871 select GENERIC_ISA_DMA
873 select HAVE_PCSPKR_PLATFORM
879 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
880 select SYS_HAS_CPU_R4X00
881 select SYS_HAS_CPU_R5000
882 select SYS_HAS_CPU_R10000
883 select R5000_CPU_SCACHE
884 select SYS_HAS_EARLY_PRINTK
885 select SYS_SUPPORTS_32BIT_KERNEL
886 select SYS_SUPPORTS_64BIT_KERNEL
887 select SYS_SUPPORTS_BIG_ENDIAN
888 select SYS_SUPPORTS_HIGHMEM
889 select SYS_SUPPORTS_LITTLE_ENDIAN
891 The SNI RM200/300/400 are MIPS-based machines manufactured by
892 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
893 Technology and now in turn merged with Fujitsu. Say Y here to
894 support this machine type.
897 bool "Toshiba TX39 series based machines"
900 bool "Toshiba TX49 series based machines"
902 config MIKROTIK_RB532
903 bool "Mikrotik RB532 boards"
906 select DMA_NONCOHERENT
909 select SYS_HAS_CPU_MIPS32_R1
910 select SYS_SUPPORTS_32BIT_KERNEL
911 select SYS_SUPPORTS_LITTLE_ENDIAN
915 select MIPS_L1_CACHE_SHIFT_4
917 Support the Mikrotik(tm) RouterBoard 532 series,
918 based on the IDT RC32434 SoC.
920 config CAVIUM_OCTEON_SOC
921 bool "Cavium Networks Octeon SoC based boards"
923 select ARCH_HAS_PHYS_TO_DMA
925 select PHYS_ADDR_T_64BIT
926 select SYS_SUPPORTS_64BIT_KERNEL
927 select SYS_SUPPORTS_BIG_ENDIAN
929 select EDAC_ATOMIC_SCRUB
930 select SYS_SUPPORTS_LITTLE_ENDIAN
931 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
932 select SYS_HAS_EARLY_PRINTK
933 select SYS_HAS_CPU_CAVIUM_OCTEON
935 select HAVE_PLAT_DELAY
936 select HAVE_PLAT_FW_INIT_CMDLINE
937 select HAVE_PLAT_MEMCPY
942 select ARCH_SPARSEMEM_ENABLE
943 select SYS_SUPPORTS_SMP
944 select NR_CPUS_DEFAULT_64
945 select MIPS_NR_CPU_NR_MAP_1024
947 select MTD_COMPLEX_MAPPINGS
949 select SYS_SUPPORTS_RELOCATABLE
951 This option supports all of the Octeon reference boards from Cavium
952 Networks. It builds a kernel that dynamically determines the Octeon
953 CPU type and supports all known board reference implementations.
954 Some of the supported boards are:
961 Say Y here for most Octeon reference boards.
964 bool "Netlogic XLR/XLS based systems"
967 select SYS_HAS_CPU_XLR
968 select SYS_SUPPORTS_SMP
971 select SYS_SUPPORTS_32BIT_KERNEL
972 select SYS_SUPPORTS_64BIT_KERNEL
973 select PHYS_ADDR_T_64BIT
974 select SYS_SUPPORTS_BIG_ENDIAN
975 select SYS_SUPPORTS_HIGHMEM
976 select NR_CPUS_DEFAULT_32
980 select ZONE_DMA32 if 64BIT
982 select SYS_HAS_EARLY_PRINTK
983 select SYS_SUPPORTS_ZBOOT
984 select SYS_SUPPORTS_ZBOOT_UART16550
986 Support for systems based on Netlogic XLR and XLS processors.
987 Say Y here if you have a XLR or XLS based board.
990 bool "Netlogic XLP based systems"
993 select SYS_HAS_CPU_XLP
994 select SYS_SUPPORTS_SMP
996 select SYS_SUPPORTS_32BIT_KERNEL
997 select SYS_SUPPORTS_64BIT_KERNEL
998 select PHYS_ADDR_T_64BIT
1000 select SYS_SUPPORTS_BIG_ENDIAN
1001 select SYS_SUPPORTS_LITTLE_ENDIAN
1002 select SYS_SUPPORTS_HIGHMEM
1003 select NR_CPUS_DEFAULT_32
1007 select ZONE_DMA32 if 64BIT
1009 select SYS_HAS_EARLY_PRINTK
1011 select SYS_SUPPORTS_ZBOOT
1012 select SYS_SUPPORTS_ZBOOT_UART16550
1014 This board is based on Netlogic XLP Processor.
1015 Say Y here if you have a XLP based board.
1017 config MIPS_PARAVIRT
1018 bool "Para-Virtualized guest system"
1021 select SYS_SUPPORTS_64BIT_KERNEL
1022 select SYS_SUPPORTS_32BIT_KERNEL
1023 select SYS_SUPPORTS_BIG_ENDIAN
1024 select SYS_SUPPORTS_SMP
1025 select NR_CPUS_DEFAULT_4
1026 select SYS_HAS_EARLY_PRINTK
1027 select SYS_HAS_CPU_MIPS32_R2
1028 select SYS_HAS_CPU_MIPS64_R2
1029 select SYS_HAS_CPU_CAVIUM_OCTEON
1031 select SWAP_IO_SPACE
1033 This option supports guest running under ????
1037 source "arch/mips/alchemy/Kconfig"
1038 source "arch/mips/ath25/Kconfig"
1039 source "arch/mips/ath79/Kconfig"
1040 source "arch/mips/bcm47xx/Kconfig"
1041 source "arch/mips/bcm63xx/Kconfig"
1042 source "arch/mips/bmips/Kconfig"
1043 source "arch/mips/generic/Kconfig"
1044 source "arch/mips/jazz/Kconfig"
1045 source "arch/mips/jz4740/Kconfig"
1046 source "arch/mips/lantiq/Kconfig"
1047 source "arch/mips/pic32/Kconfig"
1048 source "arch/mips/pistachio/Kconfig"
1049 source "arch/mips/ralink/Kconfig"
1050 source "arch/mips/sgi-ip27/Kconfig"
1051 source "arch/mips/sibyte/Kconfig"
1052 source "arch/mips/txx9/Kconfig"
1053 source "arch/mips/vr41xx/Kconfig"
1054 source "arch/mips/cavium-octeon/Kconfig"
1055 source "arch/mips/loongson2ef/Kconfig"
1056 source "arch/mips/loongson32/Kconfig"
1057 source "arch/mips/loongson64/Kconfig"
1058 source "arch/mips/netlogic/Kconfig"
1059 source "arch/mips/paravirt/Kconfig"
1063 config GENERIC_HWEIGHT
1067 config GENERIC_CALIBRATE_DELAY
1071 config SCHED_OMIT_FRAME_POINTER
1076 # Select some configuration options automatically based on user selections.
1081 config ARCH_MAY_HAVE_PC_FDC
1112 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1118 config MIPS_CLOCK_VSYSCALL
1119 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1128 config ARCH_SUPPORTS_UPROBES
1131 config DMA_MAYBE_COHERENT
1132 select ARCH_HAS_DMA_COHERENCE_H
1133 select DMA_NONCOHERENT
1136 config DMA_PERDEV_COHERENT
1138 select ARCH_HAS_SETUP_DMA_OPS
1139 select DMA_NONCOHERENT
1141 config DMA_NONCOHERENT
1144 # MIPS allows mixing "slightly different" Cacheability and Coherency
1145 # Attribute bits. It is believed that the uncached access through
1146 # KSEG1 and the implementation specific "uncached accelerated" used
1147 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1148 # significant advantages.
1150 select ARCH_HAS_DMA_WRITE_COMBINE
1151 select ARCH_HAS_DMA_PREP_COHERENT
1152 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1153 select ARCH_HAS_DMA_SET_UNCACHED
1154 select DMA_NONCOHERENT_MMAP
1155 select DMA_NONCOHERENT_CACHE_SYNC
1156 select NEED_DMA_MAP_STATE
1158 config SYS_HAS_EARLY_PRINTK
1161 config SYS_SUPPORTS_HOTPLUG_CPU
1164 config MIPS_BONITO64
1176 config NO_IOPORT_MAP
1180 def_bool CPU_NO_LOAD_STORE_LR
1182 config GENERIC_ISA_DMA
1184 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1187 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1189 select GENERIC_ISA_DMA
1191 config HAVE_PLAT_DELAY
1194 config HAVE_PLAT_FW_INIT_CMDLINE
1197 config HAVE_PLAT_MEMCPY
1203 config HOLES_IN_ZONE
1206 config SYS_SUPPORTS_RELOCATABLE
1209 Selected if the platform supports relocating the kernel.
1210 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1211 to allow access to command line and entropy sources.
1213 config MIPS_CBPF_JIT
1215 depends on BPF_JIT && HAVE_CBPF_JIT
1217 config MIPS_EBPF_JIT
1219 depends on BPF_JIT && HAVE_EBPF_JIT
1223 # Endianness selection. Sufficiently obscure so many users don't know what to
1224 # answer,so we try hard to limit the available choices. Also the use of a
1225 # choice statement should be more obvious to the user.
1228 prompt "Endianness selection"
1230 Some MIPS machines can be configured for either little or big endian
1231 byte order. These modes require different kernels and a different
1232 Linux distribution. In general there is one preferred byteorder for a
1233 particular system but some systems are just as commonly used in the
1234 one or the other endianness.
1236 config CPU_BIG_ENDIAN
1238 depends on SYS_SUPPORTS_BIG_ENDIAN
1240 config CPU_LITTLE_ENDIAN
1241 bool "Little endian"
1242 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1249 config SYS_SUPPORTS_APM_EMULATION
1252 config SYS_SUPPORTS_BIG_ENDIAN
1255 config SYS_SUPPORTS_LITTLE_ENDIAN
1258 config SYS_SUPPORTS_HUGETLBFS
1260 depends on CPU_SUPPORTS_HUGEPAGES
1263 config MIPS_HUGE_TLB_SUPPORT
1264 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1281 config PCI_GT64XXX_PCI0
1284 config PCI_XTALK_BRIDGE
1287 config NO_EXCEPT_FILL
1295 select DMA_NONCOHERENT
1296 select SYS_HAS_CPU_MIPS32_R2
1297 select SYS_SUPPORTS_32BIT_KERNEL
1298 select SYS_SUPPORTS_LITTLE_ENDIAN
1299 select SYS_SUPPORTS_BIG_ENDIAN
1300 select SYS_SUPPORTS_MIPS16
1301 select CPU_MIPSR2_IRQ_VI
1310 config SWAP_IO_SPACE
1313 config SGI_HAS_INDYDOG
1325 config SGI_HAS_ZILOG
1328 config SGI_HAS_I8042
1331 config DEFAULT_SGI_PARTITION
1343 config MIPS_L1_CACHE_SHIFT_4
1346 config MIPS_L1_CACHE_SHIFT_5
1349 config MIPS_L1_CACHE_SHIFT_6
1352 config MIPS_L1_CACHE_SHIFT_7
1355 config MIPS_L1_CACHE_SHIFT
1357 default "7" if MIPS_L1_CACHE_SHIFT_7
1358 default "6" if MIPS_L1_CACHE_SHIFT_6
1359 default "5" if MIPS_L1_CACHE_SHIFT_5
1360 default "4" if MIPS_L1_CACHE_SHIFT_4
1363 config ARC_CMDLINE_ONLY
1367 bool "ARC console support"
1368 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1382 menu "CPU selection"
1388 config CPU_LOONGSON64
1389 bool "Loongson 64-bit CPU"
1390 depends on SYS_HAS_CPU_LOONGSON64
1391 select ARCH_HAS_PHYS_TO_DMA
1393 select CPU_HAS_PREFETCH
1394 select CPU_SUPPORTS_64BIT_KERNEL
1395 select CPU_SUPPORTS_HIGHMEM
1396 select CPU_SUPPORTS_HUGEPAGES
1397 select CPU_SUPPORTS_MSA
1398 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1399 select CPU_MIPSR2_IRQ_VI
1400 select WEAK_ORDERING
1401 select WEAK_REORDERING_BEYOND_LLSC
1402 select MIPS_ASID_BITS_VARIABLE
1403 select MIPS_PGD_C0_CONTEXT
1404 select MIPS_L1_CACHE_SHIFT_6
1409 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1410 cores implements the MIPS64R2 instruction set with many extensions,
1411 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1412 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1413 Loongson-2E/2F is not covered here and will be removed in future.
1415 config LOONGSON3_ENHANCEMENT
1416 bool "New Loongson-3 CPU Enhancements"
1418 depends on CPU_LOONGSON64
1420 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1421 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1422 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1423 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1424 Fast TLB refill support, etc.
1426 This option enable those enhancements which are not probed at run
1427 time. If you want a generic kernel to run on all Loongson 3 machines,
1428 please say 'N' here. If you want a high-performance kernel to run on
1429 new Loongson-3 machines only, please say 'Y' here.
1431 config CPU_LOONGSON3_WORKAROUNDS
1432 bool "Old Loongson-3 LLSC Workarounds"
1434 depends on CPU_LOONGSON64
1436 Loongson-3 processors have the llsc issues which require workarounds.
1437 Without workarounds the system may hang unexpectedly.
1439 Newer Loongson-3 will fix these issues and no workarounds are needed.
1440 The workarounds have no significant side effect on them but may
1441 decrease the performance of the system so this option should be
1442 disabled unless the kernel is intended to be run on old systems.
1444 If unsure, please say Y.
1446 config CPU_LOONGSON3_CPUCFG_EMULATION
1447 bool "Emulate the CPUCFG instruction on older Loongson cores"
1449 depends on CPU_LOONGSON64
1451 Loongson-3A R4 and newer have the CPUCFG instruction available for
1452 userland to query CPU capabilities, much like CPUID on x86. This
1453 option provides emulation of the instruction on older Loongson
1454 cores, back to Loongson-3A1000.
1456 If unsure, please say Y.
1458 config CPU_LOONGSON2E
1460 depends on SYS_HAS_CPU_LOONGSON2E
1461 select CPU_LOONGSON2EF
1463 The Loongson 2E processor implements the MIPS III instruction set
1464 with many extensions.
1466 It has an internal FPGA northbridge, which is compatible to
1469 config CPU_LOONGSON2F
1471 depends on SYS_HAS_CPU_LOONGSON2F
1472 select CPU_LOONGSON2EF
1475 The Loongson 2F processor implements the MIPS III instruction set
1476 with many extensions.
1478 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1479 have a similar programming interface with FPGA northbridge used in
1482 config CPU_LOONGSON1B
1484 depends on SYS_HAS_CPU_LOONGSON1B
1485 select CPU_LOONGSON32
1486 select LEDS_GPIO_REGISTER
1488 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1489 Release 1 instruction set and part of the MIPS32 Release 2
1492 config CPU_LOONGSON1C
1494 depends on SYS_HAS_CPU_LOONGSON1C
1495 select CPU_LOONGSON32
1496 select LEDS_GPIO_REGISTER
1498 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1499 Release 1 instruction set and part of the MIPS32 Release 2
1502 config CPU_MIPS32_R1
1503 bool "MIPS32 Release 1"
1504 depends on SYS_HAS_CPU_MIPS32_R1
1505 select CPU_HAS_PREFETCH
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_HIGHMEM
1509 Choose this option to build a kernel for release 1 or later of the
1510 MIPS32 architecture. Most modern embedded systems with a 32-bit
1511 MIPS processor are based on a MIPS32 processor. If you know the
1512 specific type of processor in your system, choose those that one
1513 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1514 Release 2 of the MIPS32 architecture is available since several
1515 years so chances are you even have a MIPS32 Release 2 processor
1516 in which case you should choose CPU_MIPS32_R2 instead for better
1519 config CPU_MIPS32_R2
1520 bool "MIPS32 Release 2"
1521 depends on SYS_HAS_CPU_MIPS32_R2
1522 select CPU_HAS_PREFETCH
1523 select CPU_SUPPORTS_32BIT_KERNEL
1524 select CPU_SUPPORTS_HIGHMEM
1525 select CPU_SUPPORTS_MSA
1528 Choose this option to build a kernel for release 2 or later of the
1529 MIPS32 architecture. Most modern embedded systems with a 32-bit
1530 MIPS processor are based on a MIPS32 processor. If you know the
1531 specific type of processor in your system, choose those that one
1532 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1534 config CPU_MIPS32_R5
1535 bool "MIPS32 Release 5"
1536 depends on SYS_HAS_CPU_MIPS32_R5
1537 select CPU_HAS_PREFETCH
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1540 select CPU_SUPPORTS_MSA
1542 select MIPS_O32_FP64_SUPPORT
1544 Choose this option to build a kernel for release 5 or later of the
1545 MIPS32 architecture. New MIPS processors, starting with the Warrior
1546 family, are based on a MIPS32r5 processor. If you own an older
1547 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1549 config CPU_MIPS32_R6
1550 bool "MIPS32 Release 6"
1551 depends on SYS_HAS_CPU_MIPS32_R6
1552 select CPU_HAS_PREFETCH
1553 select CPU_NO_LOAD_STORE_LR
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_HIGHMEM
1556 select CPU_SUPPORTS_MSA
1558 select MIPS_O32_FP64_SUPPORT
1560 Choose this option to build a kernel for release 6 or later of the
1561 MIPS32 architecture. New MIPS processors, starting with the Warrior
1562 family, are based on a MIPS32r6 processor. If you own an older
1563 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1565 config CPU_MIPS64_R1
1566 bool "MIPS64 Release 1"
1567 depends on SYS_HAS_CPU_MIPS64_R1
1568 select CPU_HAS_PREFETCH
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1571 select CPU_SUPPORTS_HIGHMEM
1572 select CPU_SUPPORTS_HUGEPAGES
1574 Choose this option to build a kernel for release 1 or later of the
1575 MIPS64 architecture. Many modern embedded systems with a 64-bit
1576 MIPS processor are based on a MIPS64 processor. If you know the
1577 specific type of processor in your system, choose those that one
1578 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1579 Release 2 of the MIPS64 architecture is available since several
1580 years so chances are you even have a MIPS64 Release 2 processor
1581 in which case you should choose CPU_MIPS64_R2 instead for better
1584 config CPU_MIPS64_R2
1585 bool "MIPS64 Release 2"
1586 depends on SYS_HAS_CPU_MIPS64_R2
1587 select CPU_HAS_PREFETCH
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HIGHMEM
1591 select CPU_SUPPORTS_HUGEPAGES
1592 select CPU_SUPPORTS_MSA
1595 Choose this option to build a kernel for release 2 or later of the
1596 MIPS64 architecture. Many modern embedded systems with a 64-bit
1597 MIPS processor are based on a MIPS64 processor. If you know the
1598 specific type of processor in your system, choose those that one
1599 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1601 config CPU_MIPS64_R5
1602 bool "MIPS64 Release 5"
1603 depends on SYS_HAS_CPU_MIPS64_R5
1604 select CPU_HAS_PREFETCH
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HIGHMEM
1608 select CPU_SUPPORTS_HUGEPAGES
1609 select CPU_SUPPORTS_MSA
1610 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1613 Choose this option to build a kernel for release 5 or later of the
1614 MIPS64 architecture. This is a intermediate MIPS architecture
1615 release partly implementing release 6 features. Though there is no
1616 any hardware known to be based on this release.
1618 config CPU_MIPS64_R6
1619 bool "MIPS64 Release 6"
1620 depends on SYS_HAS_CPU_MIPS64_R6
1621 select CPU_HAS_PREFETCH
1622 select CPU_NO_LOAD_STORE_LR
1623 select CPU_SUPPORTS_32BIT_KERNEL
1624 select CPU_SUPPORTS_64BIT_KERNEL
1625 select CPU_SUPPORTS_HIGHMEM
1626 select CPU_SUPPORTS_HUGEPAGES
1627 select CPU_SUPPORTS_MSA
1628 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1631 Choose this option to build a kernel for release 6 or later of the
1632 MIPS64 architecture. New MIPS processors, starting with the Warrior
1633 family, are based on a MIPS64r6 processor. If you own an older
1634 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1637 bool "MIPS Warrior P5600"
1638 depends on SYS_HAS_CPU_P5600
1639 select CPU_HAS_PREFETCH
1640 select CPU_SUPPORTS_32BIT_KERNEL
1641 select CPU_SUPPORTS_HIGHMEM
1642 select CPU_SUPPORTS_MSA
1643 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1644 select CPU_SUPPORTS_CPUFREQ
1645 select CPU_MIPSR2_IRQ_VI
1646 select CPU_MIPSR2_IRQ_EI
1648 select MIPS_O32_FP64_SUPPORT
1650 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1651 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1652 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1653 level features like up to six P5600 calculation cores, CM2 with L2
1654 cache, IOCU/IOMMU (though might be unused depending on the system-
1655 specific IP core configuration), GIC, CPC, virtualisation module,
1660 depends on SYS_HAS_CPU_R3000
1663 select CPU_SUPPORTS_32BIT_KERNEL
1664 select CPU_SUPPORTS_HIGHMEM
1666 Please make sure to pick the right CPU type. Linux/MIPS is not
1667 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1668 *not* work on R4000 machines and vice versa. However, since most
1669 of the supported machines have an R4000 (or similar) CPU, R4x00
1670 might be a safe bet. If the resulting kernel does not work,
1671 try to recompile with R3000.
1675 depends on SYS_HAS_CPU_TX39XX
1676 select CPU_SUPPORTS_32BIT_KERNEL
1681 depends on SYS_HAS_CPU_VR41XX
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1685 The options selects support for the NEC VR4100 series of processors.
1686 Only choose this option if you have one of these processors as a
1687 kernel built with this option will not run on any other type of
1688 processor or vice versa.
1692 depends on SYS_HAS_CPU_R4X00
1693 select CPU_SUPPORTS_32BIT_KERNEL
1694 select CPU_SUPPORTS_64BIT_KERNEL
1695 select CPU_SUPPORTS_HUGEPAGES
1697 MIPS Technologies R4000-series processors other than 4300, including
1698 the R4000, R4400, R4600, and 4700.
1702 depends on SYS_HAS_CPU_TX49XX
1703 select CPU_HAS_PREFETCH
1704 select CPU_SUPPORTS_32BIT_KERNEL
1705 select CPU_SUPPORTS_64BIT_KERNEL
1706 select CPU_SUPPORTS_HUGEPAGES
1710 depends on SYS_HAS_CPU_R5000
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select CPU_SUPPORTS_64BIT_KERNEL
1713 select CPU_SUPPORTS_HUGEPAGES
1715 MIPS Technologies R5000-series processors other than the Nevada.
1719 depends on SYS_HAS_CPU_R5500
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HUGEPAGES
1724 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1729 depends on SYS_HAS_CPU_NEVADA
1730 select CPU_SUPPORTS_32BIT_KERNEL
1731 select CPU_SUPPORTS_64BIT_KERNEL
1732 select CPU_SUPPORTS_HUGEPAGES
1734 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1738 depends on SYS_HAS_CPU_R10000
1739 select CPU_HAS_PREFETCH
1740 select CPU_SUPPORTS_32BIT_KERNEL
1741 select CPU_SUPPORTS_64BIT_KERNEL
1742 select CPU_SUPPORTS_HIGHMEM
1743 select CPU_SUPPORTS_HUGEPAGES
1745 MIPS Technologies R10000-series processors.
1749 depends on SYS_HAS_CPU_RM7000
1750 select CPU_HAS_PREFETCH
1751 select CPU_SUPPORTS_32BIT_KERNEL
1752 select CPU_SUPPORTS_64BIT_KERNEL
1753 select CPU_SUPPORTS_HIGHMEM
1754 select CPU_SUPPORTS_HUGEPAGES
1758 depends on SYS_HAS_CPU_SB1
1759 select CPU_SUPPORTS_32BIT_KERNEL
1760 select CPU_SUPPORTS_64BIT_KERNEL
1761 select CPU_SUPPORTS_HIGHMEM
1762 select CPU_SUPPORTS_HUGEPAGES
1763 select WEAK_ORDERING
1765 config CPU_CAVIUM_OCTEON
1766 bool "Cavium Octeon processor"
1767 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1768 select CPU_HAS_PREFETCH
1769 select CPU_SUPPORTS_64BIT_KERNEL
1770 select WEAK_ORDERING
1771 select CPU_SUPPORTS_HIGHMEM
1772 select CPU_SUPPORTS_HUGEPAGES
1773 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1774 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1775 select MIPS_L1_CACHE_SHIFT_7
1778 The Cavium Octeon processor is a highly integrated chip containing
1779 many ethernet hardware widgets for networking tasks. The processor
1780 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1781 Full details can be found at http://www.caviumnetworks.com.
1784 bool "Broadcom BMIPS"
1785 depends on SYS_HAS_CPU_BMIPS
1787 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1788 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1789 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1790 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1791 select CPU_SUPPORTS_32BIT_KERNEL
1792 select DMA_NONCOHERENT
1794 select SWAP_IO_SPACE
1795 select WEAK_ORDERING
1796 select CPU_SUPPORTS_HIGHMEM
1797 select CPU_HAS_PREFETCH
1798 select CPU_SUPPORTS_CPUFREQ
1799 select MIPS_EXTERNAL_TIMER
1801 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1804 bool "Netlogic XLR SoC"
1805 depends on SYS_HAS_CPU_XLR
1806 select CPU_SUPPORTS_32BIT_KERNEL
1807 select CPU_SUPPORTS_64BIT_KERNEL
1808 select CPU_SUPPORTS_HIGHMEM
1809 select CPU_SUPPORTS_HUGEPAGES
1810 select WEAK_ORDERING
1811 select WEAK_REORDERING_BEYOND_LLSC
1813 Netlogic Microsystems XLR/XLS processors.
1816 bool "Netlogic XLP SoC"
1817 depends on SYS_HAS_CPU_XLP
1818 select CPU_SUPPORTS_32BIT_KERNEL
1819 select CPU_SUPPORTS_64BIT_KERNEL
1820 select CPU_SUPPORTS_HIGHMEM
1821 select WEAK_ORDERING
1822 select WEAK_REORDERING_BEYOND_LLSC
1823 select CPU_HAS_PREFETCH
1825 select CPU_SUPPORTS_HUGEPAGES
1826 select MIPS_ASID_BITS_VARIABLE
1828 Netlogic Microsystems XLP processors.
1831 config CPU_MIPS32_3_5_FEATURES
1832 bool "MIPS32 Release 3.5 Features"
1833 depends on SYS_HAS_CPU_MIPS32_R3_5
1834 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1837 Choose this option to build a kernel for release 2 or later of the
1838 MIPS32 architecture including features from the 3.5 release such as
1839 support for Enhanced Virtual Addressing (EVA).
1841 config CPU_MIPS32_3_5_EVA
1842 bool "Enhanced Virtual Addressing (EVA)"
1843 depends on CPU_MIPS32_3_5_FEATURES
1847 Choose this option if you want to enable the Enhanced Virtual
1848 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1849 One of its primary benefits is an increase in the maximum size
1850 of lowmem (up to 3GB). If unsure, say 'N' here.
1852 config CPU_MIPS32_R5_FEATURES
1853 bool "MIPS32 Release 5 Features"
1854 depends on SYS_HAS_CPU_MIPS32_R5
1855 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1857 Choose this option to build a kernel for release 2 or later of the
1858 MIPS32 architecture including features from release 5 such as
1859 support for Extended Physical Addressing (XPA).
1861 config CPU_MIPS32_R5_XPA
1862 bool "Extended Physical Addressing (XPA)"
1863 depends on CPU_MIPS32_R5_FEATURES
1865 depends on !PAGE_SIZE_4KB
1866 depends on SYS_SUPPORTS_HIGHMEM
1869 select PHYS_ADDR_T_64BIT
1872 Choose this option if you want to enable the Extended Physical
1873 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1874 benefit is to increase physical addressing equal to or greater
1875 than 40 bits. Note that this has the side effect of turning on
1876 64-bit addressing which in turn makes the PTEs 64-bit in size.
1877 If unsure, say 'N' here.
1880 config CPU_NOP_WORKAROUNDS
1883 config CPU_JUMP_WORKAROUNDS
1886 config CPU_LOONGSON2F_WORKAROUNDS
1887 bool "Loongson 2F Workarounds"
1889 select CPU_NOP_WORKAROUNDS
1890 select CPU_JUMP_WORKAROUNDS
1892 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1893 require workarounds. Without workarounds the system may hang
1894 unexpectedly. For more information please refer to the gas
1895 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1897 Loongson 2F03 and later have fixed these issues and no workarounds
1898 are needed. The workarounds have no significant side effect on them
1899 but may decrease the performance of the system so this option should
1900 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1903 If unsure, please say Y.
1904 endif # CPU_LOONGSON2F
1906 config SYS_SUPPORTS_ZBOOT
1908 select HAVE_KERNEL_GZIP
1909 select HAVE_KERNEL_BZIP2
1910 select HAVE_KERNEL_LZ4
1911 select HAVE_KERNEL_LZMA
1912 select HAVE_KERNEL_LZO
1913 select HAVE_KERNEL_XZ
1915 config SYS_SUPPORTS_ZBOOT_UART16550
1917 select SYS_SUPPORTS_ZBOOT
1919 config SYS_SUPPORTS_ZBOOT_UART_PROM
1921 select SYS_SUPPORTS_ZBOOT
1923 config CPU_LOONGSON2EF
1925 select CPU_SUPPORTS_32BIT_KERNEL
1926 select CPU_SUPPORTS_64BIT_KERNEL
1927 select CPU_SUPPORTS_HIGHMEM
1928 select CPU_SUPPORTS_HUGEPAGES
1929 select ARCH_HAS_PHYS_TO_DMA
1931 config CPU_LOONGSON32
1935 select CPU_HAS_PREFETCH
1936 select CPU_SUPPORTS_32BIT_KERNEL
1937 select CPU_SUPPORTS_HIGHMEM
1938 select CPU_SUPPORTS_CPUFREQ
1940 config CPU_BMIPS32_3300
1941 select SMP_UP if SMP
1944 config CPU_BMIPS4350
1946 select SYS_SUPPORTS_SMP
1947 select SYS_SUPPORTS_HOTPLUG_CPU
1949 config CPU_BMIPS4380
1951 select MIPS_L1_CACHE_SHIFT_6
1952 select SYS_SUPPORTS_SMP
1953 select SYS_SUPPORTS_HOTPLUG_CPU
1956 config CPU_BMIPS5000
1958 select MIPS_CPU_SCACHE
1959 select MIPS_L1_CACHE_SHIFT_7
1960 select SYS_SUPPORTS_SMP
1961 select SYS_SUPPORTS_HOTPLUG_CPU
1964 config SYS_HAS_CPU_LOONGSON64
1966 select CPU_SUPPORTS_CPUFREQ
1969 config SYS_HAS_CPU_LOONGSON2E
1972 config SYS_HAS_CPU_LOONGSON2F
1974 select CPU_SUPPORTS_CPUFREQ
1975 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1977 config SYS_HAS_CPU_LOONGSON1B
1980 config SYS_HAS_CPU_LOONGSON1C
1983 config SYS_HAS_CPU_MIPS32_R1
1986 config SYS_HAS_CPU_MIPS32_R2
1989 config SYS_HAS_CPU_MIPS32_R3_5
1992 config SYS_HAS_CPU_MIPS32_R5
1994 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1996 config SYS_HAS_CPU_MIPS32_R6
1998 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2000 config SYS_HAS_CPU_MIPS64_R1
2003 config SYS_HAS_CPU_MIPS64_R2
2006 config SYS_HAS_CPU_MIPS64_R6
2008 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2010 config SYS_HAS_CPU_P5600
2012 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2014 config SYS_HAS_CPU_R3000
2017 config SYS_HAS_CPU_TX39XX
2020 config SYS_HAS_CPU_VR41XX
2023 config SYS_HAS_CPU_R4X00
2026 config SYS_HAS_CPU_TX49XX
2029 config SYS_HAS_CPU_R5000
2032 config SYS_HAS_CPU_R5500
2035 config SYS_HAS_CPU_NEVADA
2038 config SYS_HAS_CPU_R10000
2040 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2042 config SYS_HAS_CPU_RM7000
2045 config SYS_HAS_CPU_SB1
2048 config SYS_HAS_CPU_CAVIUM_OCTEON
2051 config SYS_HAS_CPU_BMIPS
2054 config SYS_HAS_CPU_BMIPS32_3300
2056 select SYS_HAS_CPU_BMIPS
2058 config SYS_HAS_CPU_BMIPS4350
2060 select SYS_HAS_CPU_BMIPS
2062 config SYS_HAS_CPU_BMIPS4380
2064 select SYS_HAS_CPU_BMIPS
2066 config SYS_HAS_CPU_BMIPS5000
2068 select SYS_HAS_CPU_BMIPS
2069 select ARCH_HAS_SYNC_DMA_FOR_CPU
2071 config SYS_HAS_CPU_XLR
2074 config SYS_HAS_CPU_XLP
2078 # CPU may reorder R->R, R->W, W->R, W->W
2079 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2081 config WEAK_ORDERING
2085 # CPU may reorder reads and writes beyond LL/SC
2086 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2088 config WEAK_REORDERING_BEYOND_LLSC
2093 # These two indicate any level of the MIPS32 and MIPS64 architecture
2097 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2098 CPU_MIPS32_R6 || CPU_P5600
2102 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2106 # These indicate the revision of the architecture
2110 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2114 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2116 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2121 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2123 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2128 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2130 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2131 select HAVE_ARCH_BITREVERSE
2132 select MIPS_ASID_BITS_VARIABLE
2133 select MIPS_CRC_SUPPORT
2136 config TARGET_ISA_REV
2138 default 1 if CPU_MIPSR1
2139 default 2 if CPU_MIPSR2
2140 default 5 if CPU_MIPSR5
2141 default 6 if CPU_MIPSR6
2144 Reflects the ISA revision being targeted by the kernel build. This
2145 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2153 config SYS_SUPPORTS_32BIT_KERNEL
2155 config SYS_SUPPORTS_64BIT_KERNEL
2157 config CPU_SUPPORTS_32BIT_KERNEL
2159 config CPU_SUPPORTS_64BIT_KERNEL
2161 config CPU_SUPPORTS_CPUFREQ
2163 config CPU_SUPPORTS_ADDRWINCFG
2165 config CPU_SUPPORTS_HUGEPAGES
2167 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2168 config MIPS_PGD_C0_CONTEXT
2170 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2173 # Set to y for ptrace access to watch registers.
2175 config HARDWARE_WATCHPOINTS
2177 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2182 prompt "Kernel code model"
2184 You should only select this option if you have a workload that
2185 actually benefits from 64-bit processing or if your machine has
2186 large memory. You will only be presented a single option in this
2187 menu if your system does not support both 32-bit and 64-bit kernels.
2190 bool "32-bit kernel"
2191 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2194 Select this option if you want to build a 32-bit kernel.
2197 bool "64-bit kernel"
2198 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2200 Select this option if you want to build a 64-bit kernel.
2205 bool "KVM Guest Kernel"
2206 depends on BROKEN_ON_SMP
2208 Select this option if building a guest kernel for KVM (Trap & Emulate)
2211 config KVM_GUEST_TIMER_FREQ
2212 int "Count/Compare Timer Frequency (MHz)"
2213 depends on KVM_GUEST
2216 Set this to non-zero if building a guest kernel for KVM to skip RTC
2217 emulation when determining guest CPU Frequency. Instead, the guest's
2218 timer frequency is specified directly.
2220 config MIPS_VA_BITS_48
2221 bool "48 bits virtual memory"
2224 Support a maximum at least 48 bits of application virtual
2225 memory. Default is 40 bits or less, depending on the CPU.
2226 For page sizes 16k and above, this option results in a small
2227 memory overhead for page tables. For 4k page size, a fourth
2228 level of page tables is added which imposes both a memory
2229 overhead as well as slower TLB fault handling.
2234 prompt "Kernel page size"
2235 default PAGE_SIZE_4KB
2237 config PAGE_SIZE_4KB
2239 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2241 This option select the standard 4kB Linux page size. On some
2242 R3000-family processors this is the only available page size. Using
2243 4kB page size will minimize memory consumption and is therefore
2244 recommended for low memory systems.
2246 config PAGE_SIZE_8KB
2248 depends on CPU_CAVIUM_OCTEON
2249 depends on !MIPS_VA_BITS_48
2251 Using 8kB page size will result in higher performance kernel at
2252 the price of higher memory consumption. This option is available
2253 only on cnMIPS processors. Note that you will need a suitable Linux
2254 distribution to support this.
2256 config PAGE_SIZE_16KB
2258 depends on !CPU_R3000 && !CPU_TX39XX
2260 Using 16kB page size will result in higher performance kernel at
2261 the price of higher memory consumption. This option is available on
2262 all non-R3000 family processors. Note that you will need a suitable
2263 Linux distribution to support this.
2265 config PAGE_SIZE_32KB
2267 depends on CPU_CAVIUM_OCTEON
2268 depends on !MIPS_VA_BITS_48
2270 Using 32kB page size will result in higher performance kernel at
2271 the price of higher memory consumption. This option is available
2272 only on cnMIPS cores. Note that you will need a suitable Linux
2273 distribution to support this.
2275 config PAGE_SIZE_64KB
2277 depends on !CPU_R3000 && !CPU_TX39XX
2279 Using 64kB page size will result in higher performance kernel at
2280 the price of higher memory consumption. This option is available on
2281 all non-R3000 family processor. Not that at the time of this
2282 writing this option is still high experimental.
2286 config FORCE_MAX_ZONEORDER
2287 int "Maximum zone order"
2288 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2289 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2290 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2291 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2292 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2293 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2297 The kernel memory allocator divides physically contiguous memory
2298 blocks into "zones", where each zone is a power of two number of
2299 pages. This option selects the largest power of two that the kernel
2300 keeps in the memory allocator. If you need to allocate very large
2301 blocks of physically contiguous memory, then you may need to
2302 increase this value.
2304 This config option is actually maximum order plus one. For example,
2305 a value of 11 means that the largest free memory block is 2^10 pages.
2307 The page size is not necessarily 4KB. Keep this in mind
2308 when choosing a value for this option.
2313 config IP22_CPU_SCACHE
2318 # Support for a MIPS32 / MIPS64 style S-caches
2320 config MIPS_CPU_SCACHE
2324 config R5000_CPU_SCACHE
2328 config RM7000_CPU_SCACHE
2332 config SIBYTE_DMA_PAGEOPS
2333 bool "Use DMA to clear/copy pages"
2336 Instead of using the CPU to zero and copy pages, use a Data Mover
2337 channel. These DMA channels are otherwise unused by the standard
2338 SiByte Linux port. Seems to give a small performance benefit.
2340 config CPU_HAS_PREFETCH
2343 config CPU_GENERIC_DUMP_TLB
2345 default y if !(CPU_R3000 || CPU_TX39XX)
2347 config MIPS_FP_SUPPORT
2348 bool "Floating Point support" if EXPERT
2351 Select y to include support for floating point in the kernel
2352 including initialization of FPU hardware, FP context save & restore
2353 and emulation of an FPU where necessary. Without this support any
2354 userland program attempting to use floating point instructions will
2357 If you know that your userland will not attempt to use floating point
2358 instructions then you can say n here to shrink the kernel a little.
2362 config CPU_R2300_FPU
2364 depends on MIPS_FP_SUPPORT
2365 default y if CPU_R3000 || CPU_TX39XX
2372 depends on MIPS_FP_SUPPORT
2373 default y if !CPU_R2300_FPU
2375 config CPU_R4K_CACHE_TLB
2377 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2380 bool "MIPS MT SMP support (1 TC on each available VPE)"
2382 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2383 select CPU_MIPSR2_IRQ_VI
2384 select CPU_MIPSR2_IRQ_EI
2389 select SYS_SUPPORTS_SMP
2390 select SYS_SUPPORTS_SCHED_SMT
2391 select MIPS_PERF_SHARED_TC_COUNTERS
2393 This is a kernel model which is known as SMVP. This is supported
2394 on cores with the MT ASE and uses the available VPEs to implement
2395 virtual processors which supports SMP. This is equivalent to the
2396 Intel Hyperthreading feature. For further information go to
2397 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2403 bool "SMT (multithreading) scheduler support"
2404 depends on SYS_SUPPORTS_SCHED_SMT
2407 SMT scheduler support improves the CPU scheduler's decision making
2408 when dealing with MIPS MT enabled cores at a cost of slightly
2409 increased overhead in some places. If unsure say N here.
2411 config SYS_SUPPORTS_SCHED_SMT
2414 config SYS_SUPPORTS_MULTITHREADING
2417 config MIPS_MT_FPAFF
2418 bool "Dynamic FPU affinity for FP-intensive threads"
2420 depends on MIPS_MT_SMP
2422 config MIPSR2_TO_R6_EMULATOR
2423 bool "MIPS R2-to-R6 emulator"
2424 depends on CPU_MIPSR6
2425 depends on MIPS_FP_SUPPORT
2428 Choose this option if you want to run non-R6 MIPS userland code.
2429 Even if you say 'Y' here, the emulator will still be disabled by
2430 default. You can enable it using the 'mipsr2emu' kernel option.
2431 The only reason this is a build-time option is to save ~14K from the
2434 config SYS_SUPPORTS_VPE_LOADER
2436 depends on SYS_SUPPORTS_MULTITHREADING
2438 Indicates that the platform supports the VPE loader, and provides
2441 config MIPS_VPE_LOADER
2442 bool "VPE loader support."
2443 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2444 select CPU_MIPSR2_IRQ_VI
2445 select CPU_MIPSR2_IRQ_EI
2448 Includes a loader for loading an elf relocatable object
2449 onto another VPE and running it.
2451 config MIPS_VPE_LOADER_CMP
2454 depends on MIPS_VPE_LOADER && MIPS_CMP
2456 config MIPS_VPE_LOADER_MT
2459 depends on MIPS_VPE_LOADER && !MIPS_CMP
2461 config MIPS_VPE_LOADER_TOM
2462 bool "Load VPE program into memory hidden from linux"
2463 depends on MIPS_VPE_LOADER
2466 The loader can use memory that is present but has been hidden from
2467 Linux using the kernel command line option "mem=xxMB". It's up to
2468 you to ensure the amount you put in the option and the space your
2469 program requires is less or equal to the amount physically present.
2471 config MIPS_VPE_APSP_API
2472 bool "Enable support for AP/SP API (RTLX)"
2473 depends on MIPS_VPE_LOADER
2475 config MIPS_VPE_APSP_API_CMP
2478 depends on MIPS_VPE_APSP_API && MIPS_CMP
2480 config MIPS_VPE_APSP_API_MT
2483 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2486 bool "MIPS CMP framework support (DEPRECATED)"
2487 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2490 select SYS_SUPPORTS_SMP
2491 select WEAK_ORDERING
2494 Select this if you are using a bootloader which implements the "CMP
2495 framework" protocol (ie. YAMON) and want your kernel to make use of
2496 its ability to start secondary CPUs.
2498 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2502 bool "MIPS Coherent Processing System support"
2503 depends on SYS_SUPPORTS_MIPS_CPS
2505 select MIPS_CPS_PM if HOTPLUG_CPU
2507 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2508 select SYS_SUPPORTS_HOTPLUG_CPU
2509 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2510 select SYS_SUPPORTS_SMP
2511 select WEAK_ORDERING
2513 Select this if you wish to run an SMP kernel across multiple cores
2514 within a MIPS Coherent Processing System. When this option is
2515 enabled the kernel will probe for other cores and boot them with
2516 no external assistance. It is safe to enable this when hardware
2517 support is unavailable.
2530 config SB1_PASS_2_WORKAROUNDS
2532 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2535 config SB1_PASS_2_1_WORKAROUNDS
2537 depends on CPU_SB1 && CPU_SB1_PASS_2
2541 prompt "SmartMIPS or microMIPS ASE support"
2543 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2546 Select this if you want neither microMIPS nor SmartMIPS support
2548 config CPU_HAS_SMARTMIPS
2549 depends on SYS_SUPPORTS_SMARTMIPS
2552 SmartMIPS is a extension of the MIPS32 architecture aimed at
2553 increased security at both hardware and software level for
2554 smartcards. Enabling this option will allow proper use of the
2555 SmartMIPS instructions by Linux applications. However a kernel with
2556 this option will not work on a MIPS core without SmartMIPS core. If
2557 you don't know you probably don't have SmartMIPS and should say N
2560 config CPU_MICROMIPS
2561 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2564 When this option is enabled the kernel will be built using the
2570 bool "Support for the MIPS SIMD Architecture"
2571 depends on CPU_SUPPORTS_MSA
2572 depends on MIPS_FP_SUPPORT
2573 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2575 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2576 and a set of SIMD instructions to operate on them. When this option
2577 is enabled the kernel will support allocating & switching MSA
2578 vector register contexts. If you know that your kernel will only be
2579 running on CPUs which do not support MSA or that your userland will
2580 not be making use of it then you may wish to say N here to reduce
2581 the size & complexity of your kernel.
2592 depends on !CPU_DIEI_BROKEN
2595 config CPU_DIEI_BROKEN
2601 config CPU_NO_LOAD_STORE_LR
2604 CPU lacks support for unaligned load and store instructions:
2605 LWL, LWR, SWL, SWR (Load/store word left/right).
2606 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2610 # Vectored interrupt mode is an R2 feature
2612 config CPU_MIPSR2_IRQ_VI
2616 # Extended interrupt mode is an R2 feature
2618 config CPU_MIPSR2_IRQ_EI
2623 depends on !CPU_R3000
2629 config CPU_DADDI_WORKAROUNDS
2632 config CPU_R4000_WORKAROUNDS
2634 select CPU_R4400_WORKAROUNDS
2636 config CPU_R4400_WORKAROUNDS
2639 config CPU_R4X00_BUGS64
2641 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2643 config MIPS_ASID_SHIFT
2645 default 6 if CPU_R3000 || CPU_TX39XX
2648 config MIPS_ASID_BITS
2650 default 0 if MIPS_ASID_BITS_VARIABLE
2651 default 6 if CPU_R3000 || CPU_TX39XX
2654 config MIPS_ASID_BITS_VARIABLE
2657 config MIPS_CRC_SUPPORT
2661 # - Highmem only makes sense for the 32-bit kernel.
2662 # - The current highmem code will only work properly on physically indexed
2663 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2664 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2665 # moment we protect the user and offer the highmem option only on machines
2666 # where it's known to be safe. This will not offer highmem on a few systems
2667 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2668 # indexed CPUs but we're playing safe.
2669 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2670 # know they might have memory configurations that could make use of highmem
2674 bool "High Memory Support"
2675 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2677 config CPU_SUPPORTS_HIGHMEM
2680 config SYS_SUPPORTS_HIGHMEM
2683 config SYS_SUPPORTS_SMARTMIPS
2686 config SYS_SUPPORTS_MICROMIPS
2689 config SYS_SUPPORTS_MIPS16
2692 This option must be set if a kernel might be executed on a MIPS16-
2693 enabled CPU even if MIPS16 is not actually being used. In other
2694 words, it makes the kernel MIPS16-tolerant.
2696 config CPU_SUPPORTS_MSA
2699 config ARCH_FLATMEM_ENABLE
2701 depends on !NUMA && !CPU_LOONGSON2EF
2703 config ARCH_SPARSEMEM_ENABLE
2705 select SPARSEMEM_STATIC if !SGI_IP27
2709 depends on SYS_SUPPORTS_NUMA
2711 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2712 Access). This option improves performance on systems with more
2713 than two nodes; on two node systems it is generally better to
2714 leave it disabled; on single node systems leave this option
2717 config SYS_SUPPORTS_NUMA
2720 config HAVE_SETUP_PER_CPU_AREA
2724 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2729 bool "Relocatable kernel"
2730 depends on SYS_SUPPORTS_RELOCATABLE
2731 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2732 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2733 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2734 CPU_P5600 || CAVIUM_OCTEON_SOC
2736 This builds a kernel image that retains relocation information
2737 so it can be loaded someplace besides the default 1MB.
2738 The relocations make the kernel binary about 15% larger,
2739 but are discarded at runtime
2741 config RELOCATION_TABLE_SIZE
2742 hex "Relocation table size"
2743 depends on RELOCATABLE
2744 range 0x0 0x01000000
2745 default "0x00100000"
2747 A table of relocation data will be appended to the kernel binary
2748 and parsed at boot to fix up the relocated kernel.
2750 This option allows the amount of space reserved for the table to be
2751 adjusted, although the default of 1Mb should be ok in most cases.
2753 The build will fail and a valid size suggested if this is too small.
2755 If unsure, leave at the default value.
2757 config RANDOMIZE_BASE
2758 bool "Randomize the address of the kernel image"
2759 depends on RELOCATABLE
2761 Randomizes the physical and virtual address at which the
2762 kernel image is loaded, as a security feature that
2763 deters exploit attempts relying on knowledge of the location
2764 of kernel internals.
2766 Entropy is generated using any coprocessor 0 registers available.
2768 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2772 config RANDOMIZE_BASE_MAX_OFFSET
2773 hex "Maximum kASLR offset" if EXPERT
2774 depends on RANDOMIZE_BASE
2775 range 0x0 0x40000000 if EVA || 64BIT
2776 range 0x0 0x08000000
2777 default "0x01000000"
2779 When kASLR is active, this provides the maximum offset that will
2780 be applied to the kernel image. It should be set according to the
2781 amount of physical RAM available in the target system minus
2782 PHYSICAL_START and must be a power of 2.
2784 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2785 EVA or 64-bit. The default is 16Mb.
2790 depends on NEED_MULTIPLE_NODES
2792 config HW_PERF_EVENTS
2793 bool "Enable hardware performance counter support for perf events"
2794 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2797 Enable hardware performance counter support for perf events. If
2798 disabled, perf events will use software events only.
2801 bool "Enable DMI scanning"
2802 depends on MACH_LOONGSON64
2803 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2806 Enabled scanning of DMI to identify machine quirks. Say Y
2807 here unless you have verified that your setup is not
2808 affected by entries in the DMI blacklist. Required by PNP
2812 bool "Multi-Processing support"
2813 depends on SYS_SUPPORTS_SMP
2815 This enables support for systems with more than one CPU. If you have
2816 a system with only one CPU, say N. If you have a system with more
2817 than one CPU, say Y.
2819 If you say N here, the kernel will run on uni- and multiprocessor
2820 machines, but will use only one CPU of a multiprocessor machine. If
2821 you say Y here, the kernel will run on many, but not all,
2822 uniprocessor machines. On a uniprocessor machine, the kernel
2823 will run faster if you say N here.
2825 People using multiprocessor machines who say Y here should also say
2826 Y to "Enhanced Real Time Clock Support", below.
2828 See also the SMP-HOWTO available at
2829 <http://www.tldp.org/docs.html#howto>.
2831 If you don't know what to do here, say N.
2834 bool "Support for hot-pluggable CPUs"
2835 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2837 Say Y here to allow turning CPUs off and on. CPUs can be
2838 controlled through /sys/devices/system/cpu.
2839 (Note: power management support will enable this option
2840 automatically on SMP systems. )
2841 Say N if you want to disable CPU hotplug.
2846 config SYS_SUPPORTS_MIPS_CMP
2849 config SYS_SUPPORTS_MIPS_CPS
2852 config SYS_SUPPORTS_SMP
2855 config NR_CPUS_DEFAULT_4
2858 config NR_CPUS_DEFAULT_8
2861 config NR_CPUS_DEFAULT_16
2864 config NR_CPUS_DEFAULT_32
2867 config NR_CPUS_DEFAULT_64
2871 int "Maximum number of CPUs (2-256)"
2874 default "4" if NR_CPUS_DEFAULT_4
2875 default "8" if NR_CPUS_DEFAULT_8
2876 default "16" if NR_CPUS_DEFAULT_16
2877 default "32" if NR_CPUS_DEFAULT_32
2878 default "64" if NR_CPUS_DEFAULT_64
2880 This allows you to specify the maximum number of CPUs which this
2881 kernel will support. The maximum supported value is 32 for 32-bit
2882 kernel and 64 for 64-bit kernels; the minimum value which makes
2883 sense is 1 for Qemu (useful only for kernel debugging purposes)
2884 and 2 for all others.
2886 This is purely to save memory - each supported CPU adds
2887 approximately eight kilobytes to the kernel image. For best
2888 performance should round up your number of processors to the next
2891 config MIPS_PERF_SHARED_TC_COUNTERS
2894 config MIPS_NR_CPU_NR_MAP_1024
2897 config MIPS_NR_CPU_NR_MAP
2900 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2901 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2904 # Timer Interrupt Frequency Configuration
2908 prompt "Timer frequency"
2911 Allows the configuration of the timer frequency.
2914 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2917 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2920 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2923 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2926 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2929 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2932 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2935 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2939 config SYS_SUPPORTS_24HZ
2942 config SYS_SUPPORTS_48HZ
2945 config SYS_SUPPORTS_100HZ
2948 config SYS_SUPPORTS_128HZ
2951 config SYS_SUPPORTS_250HZ
2954 config SYS_SUPPORTS_256HZ
2957 config SYS_SUPPORTS_1000HZ
2960 config SYS_SUPPORTS_1024HZ
2963 config SYS_SUPPORTS_ARBIT_HZ
2965 default y if !SYS_SUPPORTS_24HZ && \
2966 !SYS_SUPPORTS_48HZ && \
2967 !SYS_SUPPORTS_100HZ && \
2968 !SYS_SUPPORTS_128HZ && \
2969 !SYS_SUPPORTS_250HZ && \
2970 !SYS_SUPPORTS_256HZ && \
2971 !SYS_SUPPORTS_1000HZ && \
2972 !SYS_SUPPORTS_1024HZ
2978 default 100 if HZ_100
2979 default 128 if HZ_128
2980 default 250 if HZ_250
2981 default 256 if HZ_256
2982 default 1000 if HZ_1000
2983 default 1024 if HZ_1024
2986 def_bool HIGH_RES_TIMERS
2989 bool "Kexec system call"
2992 kexec is a system call that implements the ability to shutdown your
2993 current kernel, and to start another kernel. It is like a reboot
2994 but it is independent of the system firmware. And like a reboot
2995 you can start any kernel with it, not just Linux.
2997 The name comes from the similarity to the exec system call.
2999 It is an ongoing process to be certain the hardware in a machine
3000 is properly shutdown, so do not be surprised if this code does not
3001 initially work for you. As of this writing the exact hardware
3002 interface is strongly in flux, so no good recommendation can be
3006 bool "Kernel crash dumps"
3008 Generate crash dump after being started by kexec.
3009 This should be normally only set in special crash dump kernels
3010 which are loaded in the main kernel with kexec-tools into
3011 a specially reserved region and then later executed after
3012 a crash by kdump/kexec. The crash dump kernel must be compiled
3013 to a memory address not used by the main kernel or firmware using
3016 config PHYSICAL_START
3017 hex "Physical address where the kernel is loaded"
3018 default "0xffffffff84000000"
3019 depends on CRASH_DUMP
3021 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3022 If you plan to use kernel for capturing the crash dump change
3023 this value to start of the reserved region (the "X" value as
3024 specified in the "crashkernel=YM@XM" command line boot parameter
3025 passed to the panic-ed kernel).
3028 bool "Enable seccomp to safely compute untrusted bytecode"
3032 This kernel feature is useful for number crunching applications
3033 that may need to compute untrusted bytecode during their
3034 execution. By using pipes or other transports made available to
3035 the process as file descriptors supporting the read/write
3036 syscalls, it's possible to isolate those applications in
3037 their own address space using seccomp. Once seccomp is
3038 enabled via /proc/<pid>/seccomp, it cannot be disabled
3039 and the task is only allowed to execute a few safe syscalls
3040 defined by each seccomp mode.
3042 If unsure, say Y. Only embedded should say N here.
3044 config MIPS_O32_FP64_SUPPORT
3045 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3046 depends on 32BIT || MIPS32_O32
3048 When this is enabled, the kernel will support use of 64-bit floating
3049 point registers with binaries using the O32 ABI along with the
3050 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3051 32-bit MIPS systems this support is at the cost of increasing the
3052 size and complexity of the compiled FPU emulator. Thus if you are
3053 running a MIPS32 system and know that none of your userland binaries
3054 will require 64-bit floating point, you may wish to reduce the size
3055 of your kernel & potentially improve FP emulation performance by
3058 Although binutils currently supports use of this flag the details
3059 concerning its effect upon the O32 ABI in userland are still being
3060 worked on. In order to avoid userland becoming dependant upon current
3061 behaviour before the details have been finalised, this option should
3062 be considered experimental and only enabled by those working upon
3070 select OF_EARLY_FLATTREE
3080 prompt "Kernel appended dtb support" if USE_OF
3081 default MIPS_NO_APPENDED_DTB
3083 config MIPS_NO_APPENDED_DTB
3086 Do not enable appended dtb support.
3088 config MIPS_ELF_APPENDED_DTB
3091 With this option, the boot code will look for a device tree binary
3092 DTB) included in the vmlinux ELF section .appended_dtb. By default
3093 it is empty and the DTB can be appended using binutils command
3096 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3098 This is meant as a backward compatiblity convenience for those
3099 systems with a bootloader that can't be upgraded to accommodate
3100 the documented boot protocol using a device tree.
3102 config MIPS_RAW_APPENDED_DTB
3103 bool "vmlinux.bin or vmlinuz.bin"
3105 With this option, the boot code will look for a device tree binary
3106 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3107 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3109 This is meant as a backward compatibility convenience for those
3110 systems with a bootloader that can't be upgraded to accommodate
3111 the documented boot protocol using a device tree.
3113 Beware that there is very little in terms of protection against
3114 this option being confused by leftover garbage in memory that might
3115 look like a DTB header after a reboot if no actual DTB is appended
3116 to vmlinux.bin. Do not leave this option active in a production kernel
3117 if you don't intend to always append a DTB.
3121 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3122 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3123 !MACH_LOONGSON64 && !MIPS_MALTA && \
3125 default MIPS_CMDLINE_FROM_BOOTLOADER
3127 config MIPS_CMDLINE_FROM_DTB
3129 bool "Dtb kernel arguments if available"
3131 config MIPS_CMDLINE_DTB_EXTEND
3133 bool "Extend dtb kernel arguments with bootloader arguments"
3135 config MIPS_CMDLINE_FROM_BOOTLOADER
3136 bool "Bootloader kernel arguments if available"
3138 config MIPS_CMDLINE_BUILTIN_EXTEND
3139 depends on CMDLINE_BOOL
3140 bool "Extend builtin kernel arguments with bootloader arguments"
3145 config LOCKDEP_SUPPORT
3149 config STACKTRACE_SUPPORT
3153 config PGTABLE_LEVELS
3155 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3156 default 3 if 64BIT && !PAGE_SIZE_64KB
3159 config MIPS_AUTO_PFN_OFFSET
3162 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3164 config PCI_DRIVERS_GENERIC
3165 select PCI_DOMAINS_GENERIC if PCI
3168 config PCI_DRIVERS_LEGACY
3169 def_bool !PCI_DRIVERS_GENERIC
3170 select NO_GENERIC_PCI_IOPORT_MAP
3171 select PCI_DOMAINS if PCI
3174 # ISA support is now enabled via select. Too many systems still have the one
3175 # or other ISA chip on the board that users don't know about so don't expect
3176 # users to choose the right thing ...
3182 bool "TURBOchannel support"
3183 depends on MACH_DECSTATION
3185 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3186 processors. TURBOchannel programming specifications are available
3188 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3190 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3191 Linux driver support status is documented at:
3192 <http://www.linux-mips.org/wiki/DECstation>
3198 config ARCH_MMAP_RND_BITS_MIN
3202 config ARCH_MMAP_RND_BITS_MAX
3206 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3209 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3216 select MIPS_EXTERNAL_TIMER
3229 config MIPS32_COMPAT
3235 config SYSVIPC_COMPAT
3239 bool "Kernel support for o32 binaries"
3241 select ARCH_WANT_OLD_COMPAT_IPC
3243 select MIPS32_COMPAT
3244 select SYSVIPC_COMPAT if SYSVIPC
3246 Select this option if you want to run o32 binaries. These are pure
3247 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3248 existing binaries are in this format.
3253 bool "Kernel support for n32 binaries"
3255 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3257 select MIPS32_COMPAT
3258 select SYSVIPC_COMPAT if SYSVIPC
3260 Select this option if you want to run n32 binaries. These are
3261 64-bit binaries using 32-bit quantities for addressing and certain
3262 data that would normally be 64-bit. They are used in special
3269 default y if MIPS32_O32 || MIPS32_N32
3272 menu "Power management options"
3274 config ARCH_HIBERNATION_POSSIBLE
3276 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3278 config ARCH_SUSPEND_POSSIBLE
3280 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3282 source "kernel/power/Kconfig"
3286 config MIPS_EXTERNAL_TIMER
3289 menu "CPU Power Management"
3291 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3292 source "drivers/cpufreq/Kconfig"
3295 source "drivers/cpuidle/Kconfig"
3299 source "drivers/firmware/Kconfig"
3301 source "arch/mips/kvm/Kconfig"
3303 source "arch/mips/vdso/Kconfig"