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_MEMBLOCK_NODE_MAP
76 select HAVE_MOD_ARCH_SPECIFIC
79 select HAVE_PERF_EVENTS
80 select HAVE_REGS_AND_STACK_ACCESS_API
82 select HAVE_SPARSE_SYSCALL_NR
83 select HAVE_STACKPROTECTOR
84 select HAVE_SYSCALL_TRACEPOINTS
85 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
86 select IRQ_FORCED_THREADING
88 select MODULES_USE_ELF_REL if MODULES
89 select MODULES_USE_ELF_RELA if MODULES && 64BIT
90 select PERF_USE_VMALLOC
92 select SYSCTL_EXCEPTION_TRACE
95 config MIPS_FIXUP_BIGPHYS_ADDR
98 menu "Machine selection"
105 bool "Generic board-agnostic MIPS kernel"
109 select CLKSRC_MIPS_GIC
111 select CPU_MIPSR2_IRQ_EI
112 select CPU_MIPSR2_IRQ_VI
114 select DMA_PERDEV_COHERENT
117 select MIPS_AUTO_PFN_OFFSET
118 select MIPS_CPU_SCACHE
120 select MIPS_L1_CACHE_SHIFT_7
121 select NO_EXCEPT_FILL
122 select PCI_DRIVERS_GENERIC
125 select SYS_HAS_CPU_MIPS32_R1
126 select SYS_HAS_CPU_MIPS32_R2
127 select SYS_HAS_CPU_MIPS32_R6
128 select SYS_HAS_CPU_MIPS64_R1
129 select SYS_HAS_CPU_MIPS64_R2
130 select SYS_HAS_CPU_MIPS64_R6
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_64BIT_KERNEL
133 select SYS_SUPPORTS_BIG_ENDIAN
134 select SYS_SUPPORTS_HIGHMEM
135 select SYS_SUPPORTS_LITTLE_ENDIAN
136 select SYS_SUPPORTS_MICROMIPS
137 select SYS_SUPPORTS_MIPS16
138 select SYS_SUPPORTS_MIPS_CPS
139 select SYS_SUPPORTS_MULTITHREADING
140 select SYS_SUPPORTS_RELOCATABLE
141 select SYS_SUPPORTS_SMARTMIPS
143 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
144 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
145 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
146 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
147 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
148 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
151 Select this to build a kernel which aims to support multiple boards,
152 generally using a flattened device tree passed from the bootloader
153 using the boot protocol defined in the UHI (Unified Hosting
154 Interface) specification.
157 bool "Alchemy processor based machines"
158 select PHYS_ADDR_T_64BIT
162 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
163 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
164 select SYS_HAS_CPU_MIPS32_R1
165 select SYS_SUPPORTS_32BIT_KERNEL
166 select SYS_SUPPORTS_APM_EMULATION
168 select SYS_SUPPORTS_ZBOOT
172 bool "Texas Instruments AR7"
174 select DMA_NONCOHERENT
178 select NO_EXCEPT_FILL
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_HAS_EARLY_PRINTK
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_SUPPORTS_LITTLE_ENDIAN
184 select SYS_SUPPORTS_MIPS16
185 select SYS_SUPPORTS_ZBOOT_UART16550
190 Support for the Texas Instruments AR7 System-on-a-Chip
191 family: TNETD7100, 7200 and 7300.
194 bool "Atheros AR231x/AR531x SoC support"
197 select DMA_NONCOHERENT
200 select SYS_HAS_CPU_MIPS32_R1
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_HAS_EARLY_PRINTK
205 Support for Atheros AR231x and Atheros AR531x based boards
208 bool "Atheros AR71XX/AR724X/AR913X based boards"
209 select ARCH_HAS_RESET_CONTROLLER
213 select DMA_NONCOHERENT
220 select SYS_HAS_CPU_MIPS32_R2
221 select SYS_HAS_EARLY_PRINTK
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_BIG_ENDIAN
224 select SYS_SUPPORTS_MIPS16
225 select SYS_SUPPORTS_ZBOOT_UART_PROM
227 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
229 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
232 bool "Broadcom Generic BMIPS kernel"
233 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
234 select ARCH_HAS_PHYS_TO_DMA
236 select NO_EXCEPT_FILL
242 select BCM6345_L1_IRQ
243 select BCM7038_L1_IRQ
244 select BCM7120_L2_IRQ
245 select BRCMSTB_L2_IRQ
247 select DMA_NONCOHERENT
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_SUPPORTS_BIG_ENDIAN
251 select SYS_SUPPORTS_HIGHMEM
252 select SYS_HAS_CPU_BMIPS32_3300
253 select SYS_HAS_CPU_BMIPS4350
254 select SYS_HAS_CPU_BMIPS4380
255 select SYS_HAS_CPU_BMIPS5000
257 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
258 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
259 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
260 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
261 select HARDIRQS_SW_RESEND
263 Build a generic DT-based kernel image that boots on select
264 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
265 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
266 must be set appropriately for your board.
269 bool "Broadcom BCM47XX based boards"
273 select DMA_NONCOHERENT
276 select SYS_HAS_CPU_MIPS32_R1
277 select NO_EXCEPT_FILL
278 select SYS_SUPPORTS_32BIT_KERNEL
279 select SYS_SUPPORTS_LITTLE_ENDIAN
280 select SYS_SUPPORTS_MIPS16
281 select SYS_SUPPORTS_ZBOOT
282 select SYS_HAS_EARLY_PRINTK
283 select USE_GENERIC_EARLY_PRINTK_8250
285 select LEDS_GPIO_REGISTER
288 select BCM47XX_SSB if !BCM47XX_BCMA
290 Support for BCM47XX based boards
293 bool "Broadcom BCM63XX based boards"
298 select DMA_NONCOHERENT
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_HAS_EARLY_PRINTK
306 select MIPS_L1_CACHE_SHIFT_4
309 Support for BCM63XX based boards
316 select DMA_NONCOHERENT
322 select PCI_GT64XXX_PCI0
323 select SYS_HAS_CPU_NEVADA
324 select SYS_HAS_EARLY_PRINTK
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_64BIT_KERNEL
327 select SYS_SUPPORTS_LITTLE_ENDIAN
328 select USE_GENERIC_EARLY_PRINTK_8250
330 config MACH_DECSTATION
334 select CEVT_R4K if CPU_R4X00
336 select CSRC_R4K if CPU_R4X00
337 select CPU_DADDI_WORKAROUNDS if 64BIT
338 select CPU_R4000_WORKAROUNDS if 64BIT
339 select CPU_R4400_WORKAROUNDS if 64BIT
340 select DMA_NONCOHERENT
343 select SYS_HAS_CPU_R3000
344 select SYS_HAS_CPU_R4X00
345 select SYS_SUPPORTS_32BIT_KERNEL
346 select SYS_SUPPORTS_64BIT_KERNEL
347 select SYS_SUPPORTS_LITTLE_ENDIAN
348 select SYS_SUPPORTS_128HZ
349 select SYS_SUPPORTS_256HZ
350 select SYS_SUPPORTS_1024HZ
351 select MIPS_L1_CACHE_SHIFT_4
353 This enables support for DEC's MIPS based workstations. For details
354 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
355 DECstation porting pages on <http://decstation.unix-ag.org/>.
357 If you have one of the following DECstation Models you definitely
358 want to choose R4xx0 for the CPU Type:
365 otherwise choose R3000.
368 bool "Jazz family of machines"
371 select ARCH_MIGHT_HAVE_PC_PARPORT
372 select ARCH_MIGHT_HAVE_PC_SERIO
375 select ARCH_MAY_HAVE_PC_FDC
378 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
379 select GENERIC_ISA_DMA
380 select HAVE_PCSPKR_PLATFORM
385 select SYS_HAS_CPU_R4X00
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_64BIT_KERNEL
388 select SYS_SUPPORTS_100HZ
390 This a family of machines based on the MIPS R4030 chipset which was
391 used by several vendors to build RISC/os and Windows NT workstations.
392 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
393 Olivetti M700-10 workstations.
396 bool "Ingenic SoC based machines"
397 select SYS_SUPPORTS_32BIT_KERNEL
398 select SYS_SUPPORTS_LITTLE_ENDIAN
399 select SYS_SUPPORTS_ZBOOT_UART16550
400 select CPU_SUPPORTS_HUGEPAGES
401 select DMA_NONCOHERENT
406 select GENERIC_IRQ_CHIP
407 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
411 bool "Lantiq based platforms"
412 select DMA_NONCOHERENT
416 select SYS_HAS_CPU_MIPS32_R1
417 select SYS_HAS_CPU_MIPS32_R2
418 select SYS_SUPPORTS_BIG_ENDIAN
419 select SYS_SUPPORTS_32BIT_KERNEL
420 select SYS_SUPPORTS_MIPS16
421 select SYS_SUPPORTS_MULTITHREADING
422 select SYS_SUPPORTS_VPE_LOADER
423 select SYS_HAS_EARLY_PRINTK
430 select PINCTRL_LANTIQ
431 select ARCH_HAS_RESET_CONTROLLER
432 select RESET_CONTROLLER
434 config MACH_LOONGSON32
435 bool "Loongson 32-bit family of machines"
436 select SYS_SUPPORTS_ZBOOT
438 This enables support for the Loongson-1 family of machines.
440 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
441 the Institute of Computing Technology (ICT), Chinese Academy of
444 config MACH_LOONGSON2EF
445 bool "Loongson-2E/F family of machines"
446 select SYS_SUPPORTS_ZBOOT
448 This enables the support of early Loongson-2E/F family of machines.
450 config MACH_LOONGSON64
451 bool "Loongson 64-bit family of machines"
452 select ARCH_SPARSEMEM_ENABLE
453 select ARCH_MIGHT_HAVE_PC_PARPORT
454 select ARCH_MIGHT_HAVE_PC_SERIO
455 select GENERIC_ISA_DMA_SUPPORT_BROKEN
465 select NR_CPUS_DEFAULT_64
466 select USE_GENERIC_EARLY_PRINTK_8250
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
482 This enables the support of Loongson-2/3 family of machines.
484 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
485 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
486 and Loongson-2F which will be removed), developed by the Institute
487 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
489 config MACH_PISTACHIO
490 bool "IMG Pistachio SoC based boards"
494 select CLKSRC_MIPS_GIC
497 select DMA_NONCOHERENT
501 select MIPS_CPU_SCACHE
505 select SYS_HAS_CPU_MIPS32_R2
506 select SYS_SUPPORTS_32BIT_KERNEL
507 select SYS_SUPPORTS_LITTLE_ENDIAN
508 select SYS_SUPPORTS_MIPS_CPS
509 select SYS_SUPPORTS_MULTITHREADING
510 select SYS_SUPPORTS_RELOCATABLE
511 select SYS_SUPPORTS_ZBOOT
512 select SYS_HAS_EARLY_PRINTK
513 select USE_GENERIC_EARLY_PRINTK_8250
516 This enables support for the IMG Pistachio SoC platform.
519 bool "MIPS Malta board"
520 select ARCH_MAY_HAVE_PC_FDC
521 select ARCH_MIGHT_HAVE_PC_PARPORT
522 select ARCH_MIGHT_HAVE_PC_SERIO
527 select CLKSRC_MIPS_GIC
530 select DMA_MAYBE_COHERENT
531 select GENERIC_ISA_DMA
532 select HAVE_PCSPKR_PLATFORM
538 select MIPS_CPU_SCACHE
540 select MIPS_L1_CACHE_SHIFT_6
542 select PCI_GT64XXX_PCI0
545 select SYS_HAS_CPU_MIPS32_R1
546 select SYS_HAS_CPU_MIPS32_R2
547 select SYS_HAS_CPU_MIPS32_R3_5
548 select SYS_HAS_CPU_MIPS32_R5
549 select SYS_HAS_CPU_MIPS32_R6
550 select SYS_HAS_CPU_MIPS64_R1
551 select SYS_HAS_CPU_MIPS64_R2
552 select SYS_HAS_CPU_MIPS64_R6
553 select SYS_HAS_CPU_NEVADA
554 select SYS_HAS_CPU_RM7000
555 select SYS_SUPPORTS_32BIT_KERNEL
556 select SYS_SUPPORTS_64BIT_KERNEL
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_HIGHMEM
559 select SYS_SUPPORTS_LITTLE_ENDIAN
560 select SYS_SUPPORTS_MICROMIPS
561 select SYS_SUPPORTS_MIPS16
562 select SYS_SUPPORTS_MIPS_CMP
563 select SYS_SUPPORTS_MIPS_CPS
564 select SYS_SUPPORTS_MULTITHREADING
565 select SYS_SUPPORTS_RELOCATABLE
566 select SYS_SUPPORTS_SMARTMIPS
567 select SYS_SUPPORTS_VPE_LOADER
568 select SYS_SUPPORTS_ZBOOT
570 select ZONE_DMA32 if 64BIT
572 This enables support for the MIPS Technologies Malta evaluation
576 bool "Microchip PIC32 Family"
578 This enables support for the Microchip PIC32 family of platforms.
580 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
584 bool "NEC VR4100 series based machines"
587 select SYS_HAS_CPU_VR41XX
588 select SYS_SUPPORTS_MIPS16
592 bool "NXP STB220 board"
595 Support for NXP Semiconductors STB220 Development Board.
602 Support for NXP Semiconductors STB225 Development Board.
605 bool "Ralink based machines"
609 select DMA_NONCOHERENT
612 select SYS_HAS_CPU_MIPS32_R1
613 select SYS_HAS_CPU_MIPS32_R2
614 select SYS_SUPPORTS_32BIT_KERNEL
615 select SYS_SUPPORTS_LITTLE_ENDIAN
616 select SYS_SUPPORTS_MIPS16
617 select SYS_HAS_EARLY_PRINTK
619 select ARCH_HAS_RESET_CONTROLLER
620 select RESET_CONTROLLER
623 bool "SGI IP22 (Indy/Indigo2)"
628 select ARCH_MIGHT_HAVE_PC_SERIO
632 select DEFAULT_SGI_PARTITION
633 select DMA_NONCOHERENT
637 select IP22_CPU_SCACHE
639 select GENERIC_ISA_DMA_SUPPORT_BROKEN
641 select SGI_HAS_INDYDOG
647 select SYS_HAS_CPU_R4X00
648 select SYS_HAS_CPU_R5000
649 select SYS_HAS_EARLY_PRINTK
650 select SYS_SUPPORTS_32BIT_KERNEL
651 select SYS_SUPPORTS_64BIT_KERNEL
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select MIPS_L1_CACHE_SHIFT_7
655 This are the SGI Indy, Challenge S and Indigo2, as well as certain
656 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
657 that runs on these, say Y here.
660 bool "SGI IP27 (Origin200/2000)"
661 select ARCH_HAS_PHYS_TO_DMA
662 select ARCH_SPARSEMEM_ENABLE
665 select ARC_CMDLINE_ONLY
667 select DEFAULT_SGI_PARTITION
668 select SYS_HAS_EARLY_PRINTK
671 select IRQ_DOMAIN_HIERARCHY
672 select NR_CPUS_DEFAULT_64
673 select PCI_DRIVERS_GENERIC
674 select PCI_XTALK_BRIDGE
675 select SYS_HAS_CPU_R10000
676 select SYS_SUPPORTS_64BIT_KERNEL
677 select SYS_SUPPORTS_BIG_ENDIAN
678 select SYS_SUPPORTS_NUMA
679 select SYS_SUPPORTS_SMP
680 select MIPS_L1_CACHE_SHIFT_7
682 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
683 workstations. To compile a Linux kernel that runs on these, say Y
687 bool "SGI IP28 (Indigo2 R10k)"
692 select ARCH_MIGHT_HAVE_PC_SERIO
696 select DEFAULT_SGI_PARTITION
697 select DMA_NONCOHERENT
698 select GENERIC_ISA_DMA_SUPPORT_BROKEN
704 select SGI_HAS_INDYDOG
710 select SYS_HAS_CPU_R10000
711 select SYS_HAS_EARLY_PRINTK
712 select SYS_SUPPORTS_64BIT_KERNEL
713 select SYS_SUPPORTS_BIG_ENDIAN
714 select MIPS_L1_CACHE_SHIFT_7
716 This is the SGI Indigo2 with R10000 processor. To compile a Linux
717 kernel that runs on these, say Y here.
720 bool "SGI IP30 (Octane/Octane2)"
721 select ARCH_HAS_PHYS_TO_DMA
727 select SYNC_R4K if SMP
731 select IRQ_DOMAIN_HIERARCHY
732 select NR_CPUS_DEFAULT_2
733 select PCI_DRIVERS_GENERIC
734 select PCI_XTALK_BRIDGE
735 select SYS_HAS_EARLY_PRINTK
736 select SYS_HAS_CPU_R10000
737 select SYS_SUPPORTS_64BIT_KERNEL
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_SMP
740 select MIPS_L1_CACHE_SHIFT_7
743 These are the SGI Octane and Octane2 graphics workstations. To
744 compile a Linux kernel that runs on these, say Y here.
750 select ARCH_HAS_PHYS_TO_DMA
756 select DMA_NONCOHERENT
759 select R5000_CPU_SCACHE
760 select RM7000_CPU_SCACHE
761 select SYS_HAS_CPU_R5000
762 select SYS_HAS_CPU_R10000 if BROKEN
763 select SYS_HAS_CPU_RM7000
764 select SYS_HAS_CPU_NEVADA
765 select SYS_SUPPORTS_64BIT_KERNEL
766 select SYS_SUPPORTS_BIG_ENDIAN
768 If you want this kernel to run on SGI O2 workstation, say Y here.
771 bool "Sibyte BCM91120C-CRhine"
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 BCM91120x-Carmel"
782 select SIBYTE_BCM1120
784 select SYS_HAS_CPU_SB1
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_LITTLE_ENDIAN
789 bool "Sibyte BCM91125C-CRhone"
791 select SIBYTE_BCM1125
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
799 bool "Sibyte BCM91125E-Rhone"
801 select SIBYTE_BCM1125H
803 select SYS_HAS_CPU_SB1
804 select SYS_SUPPORTS_BIG_ENDIAN
805 select SYS_SUPPORTS_LITTLE_ENDIAN
808 bool "Sibyte BCM91250A-SWARM"
810 select HAVE_PATA_PLATFORM
813 select SYS_HAS_CPU_SB1
814 select SYS_SUPPORTS_BIG_ENDIAN
815 select SYS_SUPPORTS_HIGHMEM
816 select SYS_SUPPORTS_LITTLE_ENDIAN
817 select ZONE_DMA32 if 64BIT
818 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
820 config SIBYTE_LITTLESUR
821 bool "Sibyte BCM91250C2-LittleSur"
823 select HAVE_PATA_PLATFORM
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_HIGHMEM
829 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select ZONE_DMA32 if 64BIT
832 config SIBYTE_SENTOSA
833 bool "Sibyte BCM91250E-Sentosa"
837 select SYS_HAS_CPU_SB1
838 select SYS_SUPPORTS_BIG_ENDIAN
839 select SYS_SUPPORTS_LITTLE_ENDIAN
840 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
843 bool "Sibyte BCM91480B-BigSur"
845 select NR_CPUS_DEFAULT_4
846 select SIBYTE_BCM1x80
848 select SYS_HAS_CPU_SB1
849 select SYS_SUPPORTS_BIG_ENDIAN
850 select SYS_SUPPORTS_HIGHMEM
851 select SYS_SUPPORTS_LITTLE_ENDIAN
852 select ZONE_DMA32 if 64BIT
853 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
856 bool "SNI RM200/300/400"
859 select FW_ARC if CPU_LITTLE_ENDIAN
860 select FW_ARC32 if CPU_LITTLE_ENDIAN
861 select FW_SNIPROM if CPU_BIG_ENDIAN
862 select ARCH_MAY_HAVE_PC_FDC
863 select ARCH_MIGHT_HAVE_PC_PARPORT
864 select ARCH_MIGHT_HAVE_PC_SERIO
868 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
869 select DMA_NONCOHERENT
870 select GENERIC_ISA_DMA
872 select HAVE_PCSPKR_PLATFORM
878 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
879 select SYS_HAS_CPU_R4X00
880 select SYS_HAS_CPU_R5000
881 select SYS_HAS_CPU_R10000
882 select R5000_CPU_SCACHE
883 select SYS_HAS_EARLY_PRINTK
884 select SYS_SUPPORTS_32BIT_KERNEL
885 select SYS_SUPPORTS_64BIT_KERNEL
886 select SYS_SUPPORTS_BIG_ENDIAN
887 select SYS_SUPPORTS_HIGHMEM
888 select SYS_SUPPORTS_LITTLE_ENDIAN
890 The SNI RM200/300/400 are MIPS-based machines manufactured by
891 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
892 Technology and now in turn merged with Fujitsu. Say Y here to
893 support this machine type.
896 bool "Toshiba TX39 series based machines"
899 bool "Toshiba TX49 series based machines"
901 config MIKROTIK_RB532
902 bool "Mikrotik RB532 boards"
905 select DMA_NONCOHERENT
908 select SYS_HAS_CPU_MIPS32_R1
909 select SYS_SUPPORTS_32BIT_KERNEL
910 select SYS_SUPPORTS_LITTLE_ENDIAN
914 select MIPS_L1_CACHE_SHIFT_4
916 Support the Mikrotik(tm) RouterBoard 532 series,
917 based on the IDT RC32434 SoC.
919 config CAVIUM_OCTEON_SOC
920 bool "Cavium Networks Octeon SoC based boards"
922 select ARCH_HAS_PHYS_TO_DMA
924 select PHYS_ADDR_T_64BIT
925 select SYS_SUPPORTS_64BIT_KERNEL
926 select SYS_SUPPORTS_BIG_ENDIAN
928 select EDAC_ATOMIC_SCRUB
929 select SYS_SUPPORTS_LITTLE_ENDIAN
930 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
931 select SYS_HAS_EARLY_PRINTK
932 select SYS_HAS_CPU_CAVIUM_OCTEON
934 select HAVE_PLAT_DELAY
935 select HAVE_PLAT_FW_INIT_CMDLINE
936 select HAVE_PLAT_MEMCPY
941 select ARCH_SPARSEMEM_ENABLE
942 select SYS_SUPPORTS_SMP
943 select NR_CPUS_DEFAULT_64
944 select MIPS_NR_CPU_NR_MAP_1024
946 select MTD_COMPLEX_MAPPINGS
948 select SYS_SUPPORTS_RELOCATABLE
950 This option supports all of the Octeon reference boards from Cavium
951 Networks. It builds a kernel that dynamically determines the Octeon
952 CPU type and supports all known board reference implementations.
953 Some of the supported boards are:
960 Say Y here for most Octeon reference boards.
963 bool "Netlogic XLR/XLS based systems"
966 select SYS_HAS_CPU_XLR
967 select SYS_SUPPORTS_SMP
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_64BIT_KERNEL
972 select PHYS_ADDR_T_64BIT
973 select SYS_SUPPORTS_BIG_ENDIAN
974 select SYS_SUPPORTS_HIGHMEM
975 select NR_CPUS_DEFAULT_32
979 select ZONE_DMA32 if 64BIT
981 select SYS_HAS_EARLY_PRINTK
982 select SYS_SUPPORTS_ZBOOT
983 select SYS_SUPPORTS_ZBOOT_UART16550
985 Support for systems based on Netlogic XLR and XLS processors.
986 Say Y here if you have a XLR or XLS based board.
989 bool "Netlogic XLP based systems"
992 select SYS_HAS_CPU_XLP
993 select SYS_SUPPORTS_SMP
995 select SYS_SUPPORTS_32BIT_KERNEL
996 select SYS_SUPPORTS_64BIT_KERNEL
997 select PHYS_ADDR_T_64BIT
999 select SYS_SUPPORTS_BIG_ENDIAN
1000 select SYS_SUPPORTS_LITTLE_ENDIAN
1001 select SYS_SUPPORTS_HIGHMEM
1002 select NR_CPUS_DEFAULT_32
1006 select ZONE_DMA32 if 64BIT
1008 select SYS_HAS_EARLY_PRINTK
1010 select SYS_SUPPORTS_ZBOOT
1011 select SYS_SUPPORTS_ZBOOT_UART16550
1013 This board is based on Netlogic XLP Processor.
1014 Say Y here if you have a XLP based board.
1016 config MIPS_PARAVIRT
1017 bool "Para-Virtualized guest system"
1020 select SYS_SUPPORTS_64BIT_KERNEL
1021 select SYS_SUPPORTS_32BIT_KERNEL
1022 select SYS_SUPPORTS_BIG_ENDIAN
1023 select SYS_SUPPORTS_SMP
1024 select NR_CPUS_DEFAULT_4
1025 select SYS_HAS_EARLY_PRINTK
1026 select SYS_HAS_CPU_MIPS32_R2
1027 select SYS_HAS_CPU_MIPS64_R2
1028 select SYS_HAS_CPU_CAVIUM_OCTEON
1030 select SWAP_IO_SPACE
1032 This option supports guest running under ????
1036 source "arch/mips/alchemy/Kconfig"
1037 source "arch/mips/ath25/Kconfig"
1038 source "arch/mips/ath79/Kconfig"
1039 source "arch/mips/bcm47xx/Kconfig"
1040 source "arch/mips/bcm63xx/Kconfig"
1041 source "arch/mips/bmips/Kconfig"
1042 source "arch/mips/generic/Kconfig"
1043 source "arch/mips/jazz/Kconfig"
1044 source "arch/mips/jz4740/Kconfig"
1045 source "arch/mips/lantiq/Kconfig"
1046 source "arch/mips/pic32/Kconfig"
1047 source "arch/mips/pistachio/Kconfig"
1048 source "arch/mips/ralink/Kconfig"
1049 source "arch/mips/sgi-ip27/Kconfig"
1050 source "arch/mips/sibyte/Kconfig"
1051 source "arch/mips/txx9/Kconfig"
1052 source "arch/mips/vr41xx/Kconfig"
1053 source "arch/mips/cavium-octeon/Kconfig"
1054 source "arch/mips/loongson2ef/Kconfig"
1055 source "arch/mips/loongson32/Kconfig"
1056 source "arch/mips/loongson64/Kconfig"
1057 source "arch/mips/netlogic/Kconfig"
1058 source "arch/mips/paravirt/Kconfig"
1062 config GENERIC_HWEIGHT
1066 config GENERIC_CALIBRATE_DELAY
1070 config SCHED_OMIT_FRAME_POINTER
1075 # Select some configuration options automatically based on user selections.
1080 config ARCH_MAY_HAVE_PC_FDC
1116 config MIPS_CLOCK_VSYSCALL
1117 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1126 config ARCH_SUPPORTS_UPROBES
1129 config DMA_MAYBE_COHERENT
1130 select ARCH_HAS_DMA_COHERENCE_H
1131 select DMA_NONCOHERENT
1134 config DMA_PERDEV_COHERENT
1136 select ARCH_HAS_SETUP_DMA_OPS
1137 select DMA_NONCOHERENT
1139 config DMA_NONCOHERENT
1142 # MIPS allows mixing "slightly different" Cacheability and Coherency
1143 # Attribute bits. It is believed that the uncached access through
1144 # KSEG1 and the implementation specific "uncached accelerated" used
1145 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1146 # significant advantages.
1148 select ARCH_HAS_DMA_WRITE_COMBINE
1149 select ARCH_HAS_DMA_PREP_COHERENT
1150 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1151 select ARCH_HAS_DMA_SET_UNCACHED
1152 select DMA_NONCOHERENT_MMAP
1153 select DMA_NONCOHERENT_CACHE_SYNC
1154 select NEED_DMA_MAP_STATE
1156 config SYS_HAS_EARLY_PRINTK
1159 config SYS_SUPPORTS_HOTPLUG_CPU
1162 config MIPS_BONITO64
1174 config NO_IOPORT_MAP
1178 def_bool CPU_NO_LOAD_STORE_LR
1180 config GENERIC_ISA_DMA
1182 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1185 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1187 select GENERIC_ISA_DMA
1189 config HAVE_PLAT_DELAY
1192 config HAVE_PLAT_FW_INIT_CMDLINE
1195 config HAVE_PLAT_MEMCPY
1201 config HOLES_IN_ZONE
1204 config SYS_SUPPORTS_RELOCATABLE
1207 Selected if the platform supports relocating the kernel.
1208 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1209 to allow access to command line and entropy sources.
1211 config MIPS_CBPF_JIT
1213 depends on BPF_JIT && HAVE_CBPF_JIT
1215 config MIPS_EBPF_JIT
1217 depends on BPF_JIT && HAVE_EBPF_JIT
1221 # Endianness selection. Sufficiently obscure so many users don't know what to
1222 # answer,so we try hard to limit the available choices. Also the use of a
1223 # choice statement should be more obvious to the user.
1226 prompt "Endianness selection"
1228 Some MIPS machines can be configured for either little or big endian
1229 byte order. These modes require different kernels and a different
1230 Linux distribution. In general there is one preferred byteorder for a
1231 particular system but some systems are just as commonly used in the
1232 one or the other endianness.
1234 config CPU_BIG_ENDIAN
1236 depends on SYS_SUPPORTS_BIG_ENDIAN
1238 config CPU_LITTLE_ENDIAN
1239 bool "Little endian"
1240 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1247 config SYS_SUPPORTS_APM_EMULATION
1250 config SYS_SUPPORTS_BIG_ENDIAN
1253 config SYS_SUPPORTS_LITTLE_ENDIAN
1256 config SYS_SUPPORTS_HUGETLBFS
1258 depends on CPU_SUPPORTS_HUGEPAGES
1261 config MIPS_HUGE_TLB_SUPPORT
1262 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1279 config PCI_GT64XXX_PCI0
1282 config PCI_XTALK_BRIDGE
1285 config NO_EXCEPT_FILL
1293 select DMA_NONCOHERENT
1294 select SYS_HAS_CPU_MIPS32_R2
1295 select SYS_SUPPORTS_32BIT_KERNEL
1296 select SYS_SUPPORTS_LITTLE_ENDIAN
1297 select SYS_SUPPORTS_BIG_ENDIAN
1298 select SYS_SUPPORTS_MIPS16
1299 select CPU_MIPSR2_IRQ_VI
1308 config SWAP_IO_SPACE
1311 config SGI_HAS_INDYDOG
1323 config SGI_HAS_ZILOG
1326 config SGI_HAS_I8042
1329 config DEFAULT_SGI_PARTITION
1341 config MIPS_L1_CACHE_SHIFT_4
1344 config MIPS_L1_CACHE_SHIFT_5
1347 config MIPS_L1_CACHE_SHIFT_6
1350 config MIPS_L1_CACHE_SHIFT_7
1353 config MIPS_L1_CACHE_SHIFT
1355 default "7" if MIPS_L1_CACHE_SHIFT_7
1356 default "6" if MIPS_L1_CACHE_SHIFT_6
1357 default "5" if MIPS_L1_CACHE_SHIFT_5
1358 default "4" if MIPS_L1_CACHE_SHIFT_4
1361 config HAVE_STD_PC_SERIAL_PORT
1364 config ARC_CMDLINE_ONLY
1368 bool "ARC console support"
1369 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1383 menu "CPU selection"
1389 config CPU_LOONGSON64
1390 bool "Loongson 64-bit CPU"
1391 depends on SYS_HAS_CPU_LOONGSON64
1392 select ARCH_HAS_PHYS_TO_DMA
1394 select CPU_HAS_PREFETCH
1395 select CPU_SUPPORTS_64BIT_KERNEL
1396 select CPU_SUPPORTS_HIGHMEM
1397 select CPU_SUPPORTS_HUGEPAGES
1398 select CPU_SUPPORTS_MSA
1399 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1400 select CPU_MIPSR2_IRQ_VI
1401 select WEAK_ORDERING
1402 select WEAK_REORDERING_BEYOND_LLSC
1403 select MIPS_ASID_BITS_VARIABLE
1404 select MIPS_PGD_C0_CONTEXT
1405 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_LOONGSON2E
1448 depends on SYS_HAS_CPU_LOONGSON2E
1449 select CPU_LOONGSON2EF
1451 The Loongson 2E processor implements the MIPS III instruction set
1452 with many extensions.
1454 It has an internal FPGA northbridge, which is compatible to
1457 config CPU_LOONGSON2F
1459 depends on SYS_HAS_CPU_LOONGSON2F
1460 select CPU_LOONGSON2EF
1463 The Loongson 2F processor implements the MIPS III instruction set
1464 with many extensions.
1466 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1467 have a similar programming interface with FPGA northbridge used in
1470 config CPU_LOONGSON1B
1472 depends on SYS_HAS_CPU_LOONGSON1B
1473 select CPU_LOONGSON32
1474 select LEDS_GPIO_REGISTER
1476 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1477 Release 1 instruction set and part of the MIPS32 Release 2
1480 config CPU_LOONGSON1C
1482 depends on SYS_HAS_CPU_LOONGSON1C
1483 select CPU_LOONGSON32
1484 select LEDS_GPIO_REGISTER
1486 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1487 Release 1 instruction set and part of the MIPS32 Release 2
1490 config CPU_MIPS32_R1
1491 bool "MIPS32 Release 1"
1492 depends on SYS_HAS_CPU_MIPS32_R1
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_HIGHMEM
1497 Choose this option to build a kernel for release 1 or later of the
1498 MIPS32 architecture. Most modern embedded systems with a 32-bit
1499 MIPS processor are based on a MIPS32 processor. If you know the
1500 specific type of processor in your system, choose those that one
1501 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1502 Release 2 of the MIPS32 architecture is available since several
1503 years so chances are you even have a MIPS32 Release 2 processor
1504 in which case you should choose CPU_MIPS32_R2 instead for better
1507 config CPU_MIPS32_R2
1508 bool "MIPS32 Release 2"
1509 depends on SYS_HAS_CPU_MIPS32_R2
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_HIGHMEM
1513 select CPU_SUPPORTS_MSA
1516 Choose this option to build a kernel for release 2 or later of the
1517 MIPS32 architecture. Most modern embedded systems with a 32-bit
1518 MIPS processor are based on a MIPS32 processor. If you know the
1519 specific type of processor in your system, choose those that one
1520 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1522 config CPU_MIPS32_R6
1523 bool "MIPS32 Release 6"
1524 depends on SYS_HAS_CPU_MIPS32_R6
1525 select CPU_HAS_PREFETCH
1526 select CPU_NO_LOAD_STORE_LR
1527 select CPU_SUPPORTS_32BIT_KERNEL
1528 select CPU_SUPPORTS_HIGHMEM
1529 select CPU_SUPPORTS_MSA
1531 select MIPS_O32_FP64_SUPPORT
1533 Choose this option to build a kernel for release 6 or later of the
1534 MIPS32 architecture. New MIPS processors, starting with the Warrior
1535 family, are based on a MIPS32r6 processor. If you own an older
1536 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1538 config CPU_MIPS64_R1
1539 bool "MIPS64 Release 1"
1540 depends on SYS_HAS_CPU_MIPS64_R1
1541 select CPU_HAS_PREFETCH
1542 select CPU_SUPPORTS_32BIT_KERNEL
1543 select CPU_SUPPORTS_64BIT_KERNEL
1544 select CPU_SUPPORTS_HIGHMEM
1545 select CPU_SUPPORTS_HUGEPAGES
1547 Choose this option to build a kernel for release 1 or later of the
1548 MIPS64 architecture. Many modern embedded systems with a 64-bit
1549 MIPS processor are based on a MIPS64 processor. If you know the
1550 specific type of processor in your system, choose those that one
1551 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1552 Release 2 of the MIPS64 architecture is available since several
1553 years so chances are you even have a MIPS64 Release 2 processor
1554 in which case you should choose CPU_MIPS64_R2 instead for better
1557 config CPU_MIPS64_R2
1558 bool "MIPS64 Release 2"
1559 depends on SYS_HAS_CPU_MIPS64_R2
1560 select CPU_HAS_PREFETCH
1561 select CPU_SUPPORTS_32BIT_KERNEL
1562 select CPU_SUPPORTS_64BIT_KERNEL
1563 select CPU_SUPPORTS_HIGHMEM
1564 select CPU_SUPPORTS_HUGEPAGES
1565 select CPU_SUPPORTS_MSA
1568 Choose this option to build a kernel for release 2 or later of the
1569 MIPS64 architecture. Many modern embedded systems with a 64-bit
1570 MIPS processor are based on a MIPS64 processor. If you know the
1571 specific type of processor in your system, choose those that one
1572 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1574 config CPU_MIPS64_R6
1575 bool "MIPS64 Release 6"
1576 depends on SYS_HAS_CPU_MIPS64_R6
1577 select CPU_HAS_PREFETCH
1578 select CPU_NO_LOAD_STORE_LR
1579 select CPU_SUPPORTS_32BIT_KERNEL
1580 select CPU_SUPPORTS_64BIT_KERNEL
1581 select CPU_SUPPORTS_HIGHMEM
1582 select CPU_SUPPORTS_HUGEPAGES
1583 select CPU_SUPPORTS_MSA
1584 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1587 Choose this option to build a kernel for release 6 or later of the
1588 MIPS64 architecture. New MIPS processors, starting with the Warrior
1589 family, are based on a MIPS64r6 processor. If you own an older
1590 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1594 depends on SYS_HAS_CPU_R3000
1597 select CPU_SUPPORTS_32BIT_KERNEL
1598 select CPU_SUPPORTS_HIGHMEM
1600 Please make sure to pick the right CPU type. Linux/MIPS is not
1601 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1602 *not* work on R4000 machines and vice versa. However, since most
1603 of the supported machines have an R4000 (or similar) CPU, R4x00
1604 might be a safe bet. If the resulting kernel does not work,
1605 try to recompile with R3000.
1609 depends on SYS_HAS_CPU_TX39XX
1610 select CPU_SUPPORTS_32BIT_KERNEL
1615 depends on SYS_HAS_CPU_VR41XX
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1619 The options selects support for the NEC VR4100 series of processors.
1620 Only choose this option if you have one of these processors as a
1621 kernel built with this option will not run on any other type of
1622 processor or vice versa.
1626 depends on SYS_HAS_CPU_R4X00
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HUGEPAGES
1631 MIPS Technologies R4000-series processors other than 4300, including
1632 the R4000, R4400, R4600, and 4700.
1636 depends on SYS_HAS_CPU_TX49XX
1637 select CPU_HAS_PREFETCH
1638 select CPU_SUPPORTS_32BIT_KERNEL
1639 select CPU_SUPPORTS_64BIT_KERNEL
1640 select CPU_SUPPORTS_HUGEPAGES
1644 depends on SYS_HAS_CPU_R5000
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select CPU_SUPPORTS_64BIT_KERNEL
1647 select CPU_SUPPORTS_HUGEPAGES
1649 MIPS Technologies R5000-series processors other than the Nevada.
1653 depends on SYS_HAS_CPU_R5500
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HUGEPAGES
1658 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1663 depends on SYS_HAS_CPU_NEVADA
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HUGEPAGES
1668 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1672 depends on SYS_HAS_CPU_R10000
1673 select CPU_HAS_PREFETCH
1674 select CPU_SUPPORTS_32BIT_KERNEL
1675 select CPU_SUPPORTS_64BIT_KERNEL
1676 select CPU_SUPPORTS_HIGHMEM
1677 select CPU_SUPPORTS_HUGEPAGES
1679 MIPS Technologies R10000-series processors.
1683 depends on SYS_HAS_CPU_RM7000
1684 select CPU_HAS_PREFETCH
1685 select CPU_SUPPORTS_32BIT_KERNEL
1686 select CPU_SUPPORTS_64BIT_KERNEL
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_SUPPORTS_HUGEPAGES
1692 depends on SYS_HAS_CPU_SB1
1693 select CPU_SUPPORTS_32BIT_KERNEL
1694 select CPU_SUPPORTS_64BIT_KERNEL
1695 select CPU_SUPPORTS_HIGHMEM
1696 select CPU_SUPPORTS_HUGEPAGES
1697 select WEAK_ORDERING
1699 config CPU_CAVIUM_OCTEON
1700 bool "Cavium Octeon processor"
1701 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1702 select CPU_HAS_PREFETCH
1703 select CPU_SUPPORTS_64BIT_KERNEL
1704 select WEAK_ORDERING
1705 select CPU_SUPPORTS_HIGHMEM
1706 select CPU_SUPPORTS_HUGEPAGES
1707 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1708 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1709 select MIPS_L1_CACHE_SHIFT_7
1712 The Cavium Octeon processor is a highly integrated chip containing
1713 many ethernet hardware widgets for networking tasks. The processor
1714 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1715 Full details can be found at http://www.caviumnetworks.com.
1718 bool "Broadcom BMIPS"
1719 depends on SYS_HAS_CPU_BMIPS
1721 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1722 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1723 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1724 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1725 select CPU_SUPPORTS_32BIT_KERNEL
1726 select DMA_NONCOHERENT
1728 select SWAP_IO_SPACE
1729 select WEAK_ORDERING
1730 select CPU_SUPPORTS_HIGHMEM
1731 select CPU_HAS_PREFETCH
1732 select CPU_SUPPORTS_CPUFREQ
1733 select MIPS_EXTERNAL_TIMER
1735 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1738 bool "Netlogic XLR SoC"
1739 depends on SYS_HAS_CPU_XLR
1740 select CPU_SUPPORTS_32BIT_KERNEL
1741 select CPU_SUPPORTS_64BIT_KERNEL
1742 select CPU_SUPPORTS_HIGHMEM
1743 select CPU_SUPPORTS_HUGEPAGES
1744 select WEAK_ORDERING
1745 select WEAK_REORDERING_BEYOND_LLSC
1747 Netlogic Microsystems XLR/XLS processors.
1750 bool "Netlogic XLP SoC"
1751 depends on SYS_HAS_CPU_XLP
1752 select CPU_SUPPORTS_32BIT_KERNEL
1753 select CPU_SUPPORTS_64BIT_KERNEL
1754 select CPU_SUPPORTS_HIGHMEM
1755 select WEAK_ORDERING
1756 select WEAK_REORDERING_BEYOND_LLSC
1757 select CPU_HAS_PREFETCH
1759 select CPU_SUPPORTS_HUGEPAGES
1760 select MIPS_ASID_BITS_VARIABLE
1762 Netlogic Microsystems XLP processors.
1765 config CPU_MIPS32_3_5_FEATURES
1766 bool "MIPS32 Release 3.5 Features"
1767 depends on SYS_HAS_CPU_MIPS32_R3_5
1768 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1770 Choose this option to build a kernel for release 2 or later of the
1771 MIPS32 architecture including features from the 3.5 release such as
1772 support for Enhanced Virtual Addressing (EVA).
1774 config CPU_MIPS32_3_5_EVA
1775 bool "Enhanced Virtual Addressing (EVA)"
1776 depends on CPU_MIPS32_3_5_FEATURES
1780 Choose this option if you want to enable the Enhanced Virtual
1781 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1782 One of its primary benefits is an increase in the maximum size
1783 of lowmem (up to 3GB). If unsure, say 'N' here.
1785 config CPU_MIPS32_R5_FEATURES
1786 bool "MIPS32 Release 5 Features"
1787 depends on SYS_HAS_CPU_MIPS32_R5
1788 depends on CPU_MIPS32_R2
1790 Choose this option to build a kernel for release 2 or later of the
1791 MIPS32 architecture including features from release 5 such as
1792 support for Extended Physical Addressing (XPA).
1794 config CPU_MIPS32_R5_XPA
1795 bool "Extended Physical Addressing (XPA)"
1796 depends on CPU_MIPS32_R5_FEATURES
1798 depends on !PAGE_SIZE_4KB
1799 depends on SYS_SUPPORTS_HIGHMEM
1802 select PHYS_ADDR_T_64BIT
1805 Choose this option if you want to enable the Extended Physical
1806 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1807 benefit is to increase physical addressing equal to or greater
1808 than 40 bits. Note that this has the side effect of turning on
1809 64-bit addressing which in turn makes the PTEs 64-bit in size.
1810 If unsure, say 'N' here.
1813 config CPU_NOP_WORKAROUNDS
1816 config CPU_JUMP_WORKAROUNDS
1819 config CPU_LOONGSON2F_WORKAROUNDS
1820 bool "Loongson 2F Workarounds"
1822 select CPU_NOP_WORKAROUNDS
1823 select CPU_JUMP_WORKAROUNDS
1825 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1826 require workarounds. Without workarounds the system may hang
1827 unexpectedly. For more information please refer to the gas
1828 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1830 Loongson 2F03 and later have fixed these issues and no workarounds
1831 are needed. The workarounds have no significant side effect on them
1832 but may decrease the performance of the system so this option should
1833 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1836 If unsure, please say Y.
1837 endif # CPU_LOONGSON2F
1839 config SYS_SUPPORTS_ZBOOT
1841 select HAVE_KERNEL_GZIP
1842 select HAVE_KERNEL_BZIP2
1843 select HAVE_KERNEL_LZ4
1844 select HAVE_KERNEL_LZMA
1845 select HAVE_KERNEL_LZO
1846 select HAVE_KERNEL_XZ
1848 config SYS_SUPPORTS_ZBOOT_UART16550
1850 select SYS_SUPPORTS_ZBOOT
1852 config SYS_SUPPORTS_ZBOOT_UART_PROM
1854 select SYS_SUPPORTS_ZBOOT
1856 config CPU_LOONGSON2EF
1858 select CPU_SUPPORTS_32BIT_KERNEL
1859 select CPU_SUPPORTS_64BIT_KERNEL
1860 select CPU_SUPPORTS_HIGHMEM
1861 select CPU_SUPPORTS_HUGEPAGES
1862 select ARCH_HAS_PHYS_TO_DMA
1864 config CPU_LOONGSON32
1868 select CPU_HAS_PREFETCH
1869 select CPU_SUPPORTS_32BIT_KERNEL
1870 select CPU_SUPPORTS_HIGHMEM
1871 select CPU_SUPPORTS_CPUFREQ
1873 config CPU_BMIPS32_3300
1874 select SMP_UP if SMP
1877 config CPU_BMIPS4350
1879 select SYS_SUPPORTS_SMP
1880 select SYS_SUPPORTS_HOTPLUG_CPU
1882 config CPU_BMIPS4380
1884 select MIPS_L1_CACHE_SHIFT_6
1885 select SYS_SUPPORTS_SMP
1886 select SYS_SUPPORTS_HOTPLUG_CPU
1889 config CPU_BMIPS5000
1891 select MIPS_CPU_SCACHE
1892 select MIPS_L1_CACHE_SHIFT_7
1893 select SYS_SUPPORTS_SMP
1894 select SYS_SUPPORTS_HOTPLUG_CPU
1897 config SYS_HAS_CPU_LOONGSON64
1899 select CPU_SUPPORTS_CPUFREQ
1902 config SYS_HAS_CPU_LOONGSON2E
1905 config SYS_HAS_CPU_LOONGSON2F
1907 select CPU_SUPPORTS_CPUFREQ
1908 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1910 config SYS_HAS_CPU_LOONGSON1B
1913 config SYS_HAS_CPU_LOONGSON1C
1916 config SYS_HAS_CPU_MIPS32_R1
1919 config SYS_HAS_CPU_MIPS32_R2
1922 config SYS_HAS_CPU_MIPS32_R3_5
1925 config SYS_HAS_CPU_MIPS32_R5
1927 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1929 config SYS_HAS_CPU_MIPS32_R6
1931 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1933 config SYS_HAS_CPU_MIPS64_R1
1936 config SYS_HAS_CPU_MIPS64_R2
1939 config SYS_HAS_CPU_MIPS64_R6
1941 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1943 config SYS_HAS_CPU_R3000
1946 config SYS_HAS_CPU_TX39XX
1949 config SYS_HAS_CPU_VR41XX
1952 config SYS_HAS_CPU_R4X00
1955 config SYS_HAS_CPU_TX49XX
1958 config SYS_HAS_CPU_R5000
1961 config SYS_HAS_CPU_R5500
1964 config SYS_HAS_CPU_NEVADA
1967 config SYS_HAS_CPU_R10000
1969 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1971 config SYS_HAS_CPU_RM7000
1974 config SYS_HAS_CPU_SB1
1977 config SYS_HAS_CPU_CAVIUM_OCTEON
1980 config SYS_HAS_CPU_BMIPS
1983 config SYS_HAS_CPU_BMIPS32_3300
1985 select SYS_HAS_CPU_BMIPS
1987 config SYS_HAS_CPU_BMIPS4350
1989 select SYS_HAS_CPU_BMIPS
1991 config SYS_HAS_CPU_BMIPS4380
1993 select SYS_HAS_CPU_BMIPS
1995 config SYS_HAS_CPU_BMIPS5000
1997 select SYS_HAS_CPU_BMIPS
1998 select ARCH_HAS_SYNC_DMA_FOR_CPU
2000 config SYS_HAS_CPU_XLR
2003 config SYS_HAS_CPU_XLP
2007 # CPU may reorder R->R, R->W, W->R, W->W
2008 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2010 config WEAK_ORDERING
2014 # CPU may reorder reads and writes beyond LL/SC
2015 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2017 config WEAK_REORDERING_BEYOND_LLSC
2022 # These two indicate any level of the MIPS32 and MIPS64 architecture
2026 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2030 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2033 # These indicate the revision of the architecture
2037 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2041 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2043 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2048 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2050 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2051 select HAVE_ARCH_BITREVERSE
2052 select MIPS_ASID_BITS_VARIABLE
2053 select MIPS_CRC_SUPPORT
2056 config TARGET_ISA_REV
2058 default 1 if CPU_MIPSR1
2059 default 2 if CPU_MIPSR2
2060 default 6 if CPU_MIPSR6
2063 Reflects the ISA revision being targeted by the kernel build. This
2064 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2072 config SYS_SUPPORTS_32BIT_KERNEL
2074 config SYS_SUPPORTS_64BIT_KERNEL
2076 config CPU_SUPPORTS_32BIT_KERNEL
2078 config CPU_SUPPORTS_64BIT_KERNEL
2080 config CPU_SUPPORTS_CPUFREQ
2082 config CPU_SUPPORTS_ADDRWINCFG
2084 config CPU_SUPPORTS_HUGEPAGES
2086 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2087 config MIPS_PGD_C0_CONTEXT
2089 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2092 # Set to y for ptrace access to watch registers.
2094 config HARDWARE_WATCHPOINTS
2096 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2101 prompt "Kernel code model"
2103 You should only select this option if you have a workload that
2104 actually benefits from 64-bit processing or if your machine has
2105 large memory. You will only be presented a single option in this
2106 menu if your system does not support both 32-bit and 64-bit kernels.
2109 bool "32-bit kernel"
2110 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2113 Select this option if you want to build a 32-bit kernel.
2116 bool "64-bit kernel"
2117 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2119 Select this option if you want to build a 64-bit kernel.
2124 bool "KVM Guest Kernel"
2125 depends on BROKEN_ON_SMP
2127 Select this option if building a guest kernel for KVM (Trap & Emulate)
2130 config KVM_GUEST_TIMER_FREQ
2131 int "Count/Compare Timer Frequency (MHz)"
2132 depends on KVM_GUEST
2135 Set this to non-zero if building a guest kernel for KVM to skip RTC
2136 emulation when determining guest CPU Frequency. Instead, the guest's
2137 timer frequency is specified directly.
2139 config MIPS_VA_BITS_48
2140 bool "48 bits virtual memory"
2143 Support a maximum at least 48 bits of application virtual
2144 memory. Default is 40 bits or less, depending on the CPU.
2145 For page sizes 16k and above, this option results in a small
2146 memory overhead for page tables. For 4k page size, a fourth
2147 level of page tables is added which imposes both a memory
2148 overhead as well as slower TLB fault handling.
2153 prompt "Kernel page size"
2154 default PAGE_SIZE_4KB
2156 config PAGE_SIZE_4KB
2158 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2160 This option select the standard 4kB Linux page size. On some
2161 R3000-family processors this is the only available page size. Using
2162 4kB page size will minimize memory consumption and is therefore
2163 recommended for low memory systems.
2165 config PAGE_SIZE_8KB
2167 depends on CPU_CAVIUM_OCTEON
2168 depends on !MIPS_VA_BITS_48
2170 Using 8kB page size will result in higher performance kernel at
2171 the price of higher memory consumption. This option is available
2172 only on cnMIPS processors. Note that you will need a suitable Linux
2173 distribution to support this.
2175 config PAGE_SIZE_16KB
2177 depends on !CPU_R3000 && !CPU_TX39XX
2179 Using 16kB page size will result in higher performance kernel at
2180 the price of higher memory consumption. This option is available on
2181 all non-R3000 family processors. Note that you will need a suitable
2182 Linux distribution to support this.
2184 config PAGE_SIZE_32KB
2186 depends on CPU_CAVIUM_OCTEON
2187 depends on !MIPS_VA_BITS_48
2189 Using 32kB page size will result in higher performance kernel at
2190 the price of higher memory consumption. This option is available
2191 only on cnMIPS cores. Note that you will need a suitable Linux
2192 distribution to support this.
2194 config PAGE_SIZE_64KB
2196 depends on !CPU_R3000 && !CPU_TX39XX
2198 Using 64kB page size will result in higher performance kernel at
2199 the price of higher memory consumption. This option is available on
2200 all non-R3000 family processor. Not that at the time of this
2201 writing this option is still high experimental.
2205 config FORCE_MAX_ZONEORDER
2206 int "Maximum zone order"
2207 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2208 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2209 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2210 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2211 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2212 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2216 The kernel memory allocator divides physically contiguous memory
2217 blocks into "zones", where each zone is a power of two number of
2218 pages. This option selects the largest power of two that the kernel
2219 keeps in the memory allocator. If you need to allocate very large
2220 blocks of physically contiguous memory, then you may need to
2221 increase this value.
2223 This config option is actually maximum order plus one. For example,
2224 a value of 11 means that the largest free memory block is 2^10 pages.
2226 The page size is not necessarily 4KB. Keep this in mind
2227 when choosing a value for this option.
2232 config IP22_CPU_SCACHE
2237 # Support for a MIPS32 / MIPS64 style S-caches
2239 config MIPS_CPU_SCACHE
2243 config R5000_CPU_SCACHE
2247 config RM7000_CPU_SCACHE
2251 config SIBYTE_DMA_PAGEOPS
2252 bool "Use DMA to clear/copy pages"
2255 Instead of using the CPU to zero and copy pages, use a Data Mover
2256 channel. These DMA channels are otherwise unused by the standard
2257 SiByte Linux port. Seems to give a small performance benefit.
2259 config CPU_HAS_PREFETCH
2262 config CPU_GENERIC_DUMP_TLB
2264 default y if !(CPU_R3000 || CPU_TX39XX)
2266 config MIPS_FP_SUPPORT
2267 bool "Floating Point support" if EXPERT
2270 Select y to include support for floating point in the kernel
2271 including initialization of FPU hardware, FP context save & restore
2272 and emulation of an FPU where necessary. Without this support any
2273 userland program attempting to use floating point instructions will
2276 If you know that your userland will not attempt to use floating point
2277 instructions then you can say n here to shrink the kernel a little.
2281 config CPU_R2300_FPU
2283 depends on MIPS_FP_SUPPORT
2284 default y if CPU_R3000 || CPU_TX39XX
2291 depends on MIPS_FP_SUPPORT
2292 default y if !CPU_R2300_FPU
2294 config CPU_R4K_CACHE_TLB
2296 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2299 bool "MIPS MT SMP support (1 TC on each available VPE)"
2301 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2302 select CPU_MIPSR2_IRQ_VI
2303 select CPU_MIPSR2_IRQ_EI
2308 select SYS_SUPPORTS_SMP
2309 select SYS_SUPPORTS_SCHED_SMT
2310 select MIPS_PERF_SHARED_TC_COUNTERS
2312 This is a kernel model which is known as SMVP. This is supported
2313 on cores with the MT ASE and uses the available VPEs to implement
2314 virtual processors which supports SMP. This is equivalent to the
2315 Intel Hyperthreading feature. For further information go to
2316 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2322 bool "SMT (multithreading) scheduler support"
2323 depends on SYS_SUPPORTS_SCHED_SMT
2326 SMT scheduler support improves the CPU scheduler's decision making
2327 when dealing with MIPS MT enabled cores at a cost of slightly
2328 increased overhead in some places. If unsure say N here.
2330 config SYS_SUPPORTS_SCHED_SMT
2333 config SYS_SUPPORTS_MULTITHREADING
2336 config MIPS_MT_FPAFF
2337 bool "Dynamic FPU affinity for FP-intensive threads"
2339 depends on MIPS_MT_SMP
2341 config MIPSR2_TO_R6_EMULATOR
2342 bool "MIPS R2-to-R6 emulator"
2343 depends on CPU_MIPSR6
2344 depends on MIPS_FP_SUPPORT
2347 Choose this option if you want to run non-R6 MIPS userland code.
2348 Even if you say 'Y' here, the emulator will still be disabled by
2349 default. You can enable it using the 'mipsr2emu' kernel option.
2350 The only reason this is a build-time option is to save ~14K from the
2353 config SYS_SUPPORTS_VPE_LOADER
2355 depends on SYS_SUPPORTS_MULTITHREADING
2357 Indicates that the platform supports the VPE loader, and provides
2360 config MIPS_VPE_LOADER
2361 bool "VPE loader support."
2362 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2363 select CPU_MIPSR2_IRQ_VI
2364 select CPU_MIPSR2_IRQ_EI
2367 Includes a loader for loading an elf relocatable object
2368 onto another VPE and running it.
2370 config MIPS_VPE_LOADER_CMP
2373 depends on MIPS_VPE_LOADER && MIPS_CMP
2375 config MIPS_VPE_LOADER_MT
2378 depends on MIPS_VPE_LOADER && !MIPS_CMP
2380 config MIPS_VPE_LOADER_TOM
2381 bool "Load VPE program into memory hidden from linux"
2382 depends on MIPS_VPE_LOADER
2385 The loader can use memory that is present but has been hidden from
2386 Linux using the kernel command line option "mem=xxMB". It's up to
2387 you to ensure the amount you put in the option and the space your
2388 program requires is less or equal to the amount physically present.
2390 config MIPS_VPE_APSP_API
2391 bool "Enable support for AP/SP API (RTLX)"
2392 depends on MIPS_VPE_LOADER
2394 config MIPS_VPE_APSP_API_CMP
2397 depends on MIPS_VPE_APSP_API && MIPS_CMP
2399 config MIPS_VPE_APSP_API_MT
2402 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2405 bool "MIPS CMP framework support (DEPRECATED)"
2406 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2409 select SYS_SUPPORTS_SMP
2410 select WEAK_ORDERING
2413 Select this if you are using a bootloader which implements the "CMP
2414 framework" protocol (ie. YAMON) and want your kernel to make use of
2415 its ability to start secondary CPUs.
2417 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2421 bool "MIPS Coherent Processing System support"
2422 depends on SYS_SUPPORTS_MIPS_CPS
2424 select MIPS_CPS_PM if HOTPLUG_CPU
2426 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2427 select SYS_SUPPORTS_HOTPLUG_CPU
2428 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2429 select SYS_SUPPORTS_SMP
2430 select WEAK_ORDERING
2432 Select this if you wish to run an SMP kernel across multiple cores
2433 within a MIPS Coherent Processing System. When this option is
2434 enabled the kernel will probe for other cores and boot them with
2435 no external assistance. It is safe to enable this when hardware
2436 support is unavailable.
2449 config SB1_PASS_2_WORKAROUNDS
2451 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2454 config SB1_PASS_2_1_WORKAROUNDS
2456 depends on CPU_SB1 && CPU_SB1_PASS_2
2460 prompt "SmartMIPS or microMIPS ASE support"
2462 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2465 Select this if you want neither microMIPS nor SmartMIPS support
2467 config CPU_HAS_SMARTMIPS
2468 depends on SYS_SUPPORTS_SMARTMIPS
2471 SmartMIPS is a extension of the MIPS32 architecture aimed at
2472 increased security at both hardware and software level for
2473 smartcards. Enabling this option will allow proper use of the
2474 SmartMIPS instructions by Linux applications. However a kernel with
2475 this option will not work on a MIPS core without SmartMIPS core. If
2476 you don't know you probably don't have SmartMIPS and should say N
2479 config CPU_MICROMIPS
2480 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2483 When this option is enabled the kernel will be built using the
2489 bool "Support for the MIPS SIMD Architecture"
2490 depends on CPU_SUPPORTS_MSA
2491 depends on MIPS_FP_SUPPORT
2492 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2494 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2495 and a set of SIMD instructions to operate on them. When this option
2496 is enabled the kernel will support allocating & switching MSA
2497 vector register contexts. If you know that your kernel will only be
2498 running on CPUs which do not support MSA or that your userland will
2499 not be making use of it then you may wish to say N here to reduce
2500 the size & complexity of your kernel.
2511 depends on !CPU_DIEI_BROKEN
2514 config CPU_DIEI_BROKEN
2520 config CPU_NO_LOAD_STORE_LR
2523 CPU lacks support for unaligned load and store instructions:
2524 LWL, LWR, SWL, SWR (Load/store word left/right).
2525 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2529 # Vectored interrupt mode is an R2 feature
2531 config CPU_MIPSR2_IRQ_VI
2535 # Extended interrupt mode is an R2 feature
2537 config CPU_MIPSR2_IRQ_EI
2542 depends on !CPU_R3000
2548 config CPU_DADDI_WORKAROUNDS
2551 config CPU_R4000_WORKAROUNDS
2553 select CPU_R4400_WORKAROUNDS
2555 config CPU_R4400_WORKAROUNDS
2558 config CPU_R4X00_BUGS64
2560 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2562 config MIPS_ASID_SHIFT
2564 default 6 if CPU_R3000 || CPU_TX39XX
2567 config MIPS_ASID_BITS
2569 default 0 if MIPS_ASID_BITS_VARIABLE
2570 default 6 if CPU_R3000 || CPU_TX39XX
2573 config MIPS_ASID_BITS_VARIABLE
2576 config MIPS_CRC_SUPPORT
2580 # - Highmem only makes sense for the 32-bit kernel.
2581 # - The current highmem code will only work properly on physically indexed
2582 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2583 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2584 # moment we protect the user and offer the highmem option only on machines
2585 # where it's known to be safe. This will not offer highmem on a few systems
2586 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2587 # indexed CPUs but we're playing safe.
2588 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2589 # know they might have memory configurations that could make use of highmem
2593 bool "High Memory Support"
2594 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2596 config CPU_SUPPORTS_HIGHMEM
2599 config SYS_SUPPORTS_HIGHMEM
2602 config SYS_SUPPORTS_SMARTMIPS
2605 config SYS_SUPPORTS_MICROMIPS
2608 config SYS_SUPPORTS_MIPS16
2611 This option must be set if a kernel might be executed on a MIPS16-
2612 enabled CPU even if MIPS16 is not actually being used. In other
2613 words, it makes the kernel MIPS16-tolerant.
2615 config CPU_SUPPORTS_MSA
2618 config ARCH_FLATMEM_ENABLE
2620 depends on !NUMA && !CPU_LOONGSON2EF
2622 config ARCH_SPARSEMEM_ENABLE
2624 select SPARSEMEM_STATIC if !SGI_IP27
2628 depends on SYS_SUPPORTS_NUMA
2630 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2631 Access). This option improves performance on systems with more
2632 than two nodes; on two node systems it is generally better to
2633 leave it disabled; on single node systems leave this option
2636 config SYS_SUPPORTS_NUMA
2639 config HAVE_SETUP_PER_CPU_AREA
2643 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2648 bool "Relocatable kernel"
2649 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2651 This builds a kernel image that retains relocation information
2652 so it can be loaded someplace besides the default 1MB.
2653 The relocations make the kernel binary about 15% larger,
2654 but are discarded at runtime
2656 config RELOCATION_TABLE_SIZE
2657 hex "Relocation table size"
2658 depends on RELOCATABLE
2659 range 0x0 0x01000000
2660 default "0x00100000"
2662 A table of relocation data will be appended to the kernel binary
2663 and parsed at boot to fix up the relocated kernel.
2665 This option allows the amount of space reserved for the table to be
2666 adjusted, although the default of 1Mb should be ok in most cases.
2668 The build will fail and a valid size suggested if this is too small.
2670 If unsure, leave at the default value.
2672 config RANDOMIZE_BASE
2673 bool "Randomize the address of the kernel image"
2674 depends on RELOCATABLE
2676 Randomizes the physical and virtual address at which the
2677 kernel image is loaded, as a security feature that
2678 deters exploit attempts relying on knowledge of the location
2679 of kernel internals.
2681 Entropy is generated using any coprocessor 0 registers available.
2683 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2687 config RANDOMIZE_BASE_MAX_OFFSET
2688 hex "Maximum kASLR offset" if EXPERT
2689 depends on RANDOMIZE_BASE
2690 range 0x0 0x40000000 if EVA || 64BIT
2691 range 0x0 0x08000000
2692 default "0x01000000"
2694 When kASLR is active, this provides the maximum offset that will
2695 be applied to the kernel image. It should be set according to the
2696 amount of physical RAM available in the target system minus
2697 PHYSICAL_START and must be a power of 2.
2699 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2700 EVA or 64-bit. The default is 16Mb.
2705 depends on NEED_MULTIPLE_NODES
2707 config HW_PERF_EVENTS
2708 bool "Enable hardware performance counter support for perf events"
2709 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2712 Enable hardware performance counter support for perf events. If
2713 disabled, perf events will use software events only.
2716 bool "Enable DMI scanning"
2717 depends on MACH_LOONGSON64
2718 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2721 Enabled scanning of DMI to identify machine quirks. Say Y
2722 here unless you have verified that your setup is not
2723 affected by entries in the DMI blacklist. Required by PNP
2727 bool "Multi-Processing support"
2728 depends on SYS_SUPPORTS_SMP
2730 This enables support for systems with more than one CPU. If you have
2731 a system with only one CPU, say N. If you have a system with more
2732 than one CPU, say Y.
2734 If you say N here, the kernel will run on uni- and multiprocessor
2735 machines, but will use only one CPU of a multiprocessor machine. If
2736 you say Y here, the kernel will run on many, but not all,
2737 uniprocessor machines. On a uniprocessor machine, the kernel
2738 will run faster if you say N here.
2740 People using multiprocessor machines who say Y here should also say
2741 Y to "Enhanced Real Time Clock Support", below.
2743 See also the SMP-HOWTO available at
2744 <http://www.tldp.org/docs.html#howto>.
2746 If you don't know what to do here, say N.
2749 bool "Support for hot-pluggable CPUs"
2750 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2752 Say Y here to allow turning CPUs off and on. CPUs can be
2753 controlled through /sys/devices/system/cpu.
2754 (Note: power management support will enable this option
2755 automatically on SMP systems. )
2756 Say N if you want to disable CPU hotplug.
2761 config SYS_SUPPORTS_MIPS_CMP
2764 config SYS_SUPPORTS_MIPS_CPS
2767 config SYS_SUPPORTS_SMP
2770 config NR_CPUS_DEFAULT_4
2773 config NR_CPUS_DEFAULT_8
2776 config NR_CPUS_DEFAULT_16
2779 config NR_CPUS_DEFAULT_32
2782 config NR_CPUS_DEFAULT_64
2786 int "Maximum number of CPUs (2-256)"
2789 default "4" if NR_CPUS_DEFAULT_4
2790 default "8" if NR_CPUS_DEFAULT_8
2791 default "16" if NR_CPUS_DEFAULT_16
2792 default "32" if NR_CPUS_DEFAULT_32
2793 default "64" if NR_CPUS_DEFAULT_64
2795 This allows you to specify the maximum number of CPUs which this
2796 kernel will support. The maximum supported value is 32 for 32-bit
2797 kernel and 64 for 64-bit kernels; the minimum value which makes
2798 sense is 1 for Qemu (useful only for kernel debugging purposes)
2799 and 2 for all others.
2801 This is purely to save memory - each supported CPU adds
2802 approximately eight kilobytes to the kernel image. For best
2803 performance should round up your number of processors to the next
2806 config MIPS_PERF_SHARED_TC_COUNTERS
2809 config MIPS_NR_CPU_NR_MAP_1024
2812 config MIPS_NR_CPU_NR_MAP
2815 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2816 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2819 # Timer Interrupt Frequency Configuration
2823 prompt "Timer frequency"
2826 Allows the configuration of the timer frequency.
2829 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2832 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2835 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2838 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2841 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2844 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2847 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2850 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2854 config SYS_SUPPORTS_24HZ
2857 config SYS_SUPPORTS_48HZ
2860 config SYS_SUPPORTS_100HZ
2863 config SYS_SUPPORTS_128HZ
2866 config SYS_SUPPORTS_250HZ
2869 config SYS_SUPPORTS_256HZ
2872 config SYS_SUPPORTS_1000HZ
2875 config SYS_SUPPORTS_1024HZ
2878 config SYS_SUPPORTS_ARBIT_HZ
2880 default y if !SYS_SUPPORTS_24HZ && \
2881 !SYS_SUPPORTS_48HZ && \
2882 !SYS_SUPPORTS_100HZ && \
2883 !SYS_SUPPORTS_128HZ && \
2884 !SYS_SUPPORTS_250HZ && \
2885 !SYS_SUPPORTS_256HZ && \
2886 !SYS_SUPPORTS_1000HZ && \
2887 !SYS_SUPPORTS_1024HZ
2893 default 100 if HZ_100
2894 default 128 if HZ_128
2895 default 250 if HZ_250
2896 default 256 if HZ_256
2897 default 1000 if HZ_1000
2898 default 1024 if HZ_1024
2901 def_bool HIGH_RES_TIMERS
2904 bool "Kexec system call"
2907 kexec is a system call that implements the ability to shutdown your
2908 current kernel, and to start another kernel. It is like a reboot
2909 but it is independent of the system firmware. And like a reboot
2910 you can start any kernel with it, not just Linux.
2912 The name comes from the similarity to the exec system call.
2914 It is an ongoing process to be certain the hardware in a machine
2915 is properly shutdown, so do not be surprised if this code does not
2916 initially work for you. As of this writing the exact hardware
2917 interface is strongly in flux, so no good recommendation can be
2921 bool "Kernel crash dumps"
2923 Generate crash dump after being started by kexec.
2924 This should be normally only set in special crash dump kernels
2925 which are loaded in the main kernel with kexec-tools into
2926 a specially reserved region and then later executed after
2927 a crash by kdump/kexec. The crash dump kernel must be compiled
2928 to a memory address not used by the main kernel or firmware using
2931 config PHYSICAL_START
2932 hex "Physical address where the kernel is loaded"
2933 default "0xffffffff84000000"
2934 depends on CRASH_DUMP
2936 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2937 If you plan to use kernel for capturing the crash dump change
2938 this value to start of the reserved region (the "X" value as
2939 specified in the "crashkernel=YM@XM" command line boot parameter
2940 passed to the panic-ed kernel).
2943 bool "Enable seccomp to safely compute untrusted bytecode"
2947 This kernel feature is useful for number crunching applications
2948 that may need to compute untrusted bytecode during their
2949 execution. By using pipes or other transports made available to
2950 the process as file descriptors supporting the read/write
2951 syscalls, it's possible to isolate those applications in
2952 their own address space using seccomp. Once seccomp is
2953 enabled via /proc/<pid>/seccomp, it cannot be disabled
2954 and the task is only allowed to execute a few safe syscalls
2955 defined by each seccomp mode.
2957 If unsure, say Y. Only embedded should say N here.
2959 config MIPS_O32_FP64_SUPPORT
2960 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2961 depends on 32BIT || MIPS32_O32
2963 When this is enabled, the kernel will support use of 64-bit floating
2964 point registers with binaries using the O32 ABI along with the
2965 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2966 32-bit MIPS systems this support is at the cost of increasing the
2967 size and complexity of the compiled FPU emulator. Thus if you are
2968 running a MIPS32 system and know that none of your userland binaries
2969 will require 64-bit floating point, you may wish to reduce the size
2970 of your kernel & potentially improve FP emulation performance by
2973 Although binutils currently supports use of this flag the details
2974 concerning its effect upon the O32 ABI in userland are still being
2975 worked on. In order to avoid userland becoming dependant upon current
2976 behaviour before the details have been finalised, this option should
2977 be considered experimental and only enabled by those working upon
2985 select OF_EARLY_FLATTREE
2995 prompt "Kernel appended dtb support" if USE_OF
2996 default MIPS_NO_APPENDED_DTB
2998 config MIPS_NO_APPENDED_DTB
3001 Do not enable appended dtb support.
3003 config MIPS_ELF_APPENDED_DTB
3006 With this option, the boot code will look for a device tree binary
3007 DTB) included in the vmlinux ELF section .appended_dtb. By default
3008 it is empty and the DTB can be appended using binutils command
3011 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3013 This is meant as a backward compatiblity convenience for those
3014 systems with a bootloader that can't be upgraded to accommodate
3015 the documented boot protocol using a device tree.
3017 config MIPS_RAW_APPENDED_DTB
3018 bool "vmlinux.bin or vmlinuz.bin"
3020 With this option, the boot code will look for a device tree binary
3021 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3022 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3024 This is meant as a backward compatibility convenience for those
3025 systems with a bootloader that can't be upgraded to accommodate
3026 the documented boot protocol using a device tree.
3028 Beware that there is very little in terms of protection against
3029 this option being confused by leftover garbage in memory that might
3030 look like a DTB header after a reboot if no actual DTB is appended
3031 to vmlinux.bin. Do not leave this option active in a production kernel
3032 if you don't intend to always append a DTB.
3036 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3037 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3038 !MACH_LOONGSON64 && !MIPS_MALTA && \
3040 default MIPS_CMDLINE_FROM_BOOTLOADER
3042 config MIPS_CMDLINE_FROM_DTB
3044 bool "Dtb kernel arguments if available"
3046 config MIPS_CMDLINE_DTB_EXTEND
3048 bool "Extend dtb kernel arguments with bootloader arguments"
3050 config MIPS_CMDLINE_FROM_BOOTLOADER
3051 bool "Bootloader kernel arguments if available"
3053 config MIPS_CMDLINE_BUILTIN_EXTEND
3054 depends on CMDLINE_BOOL
3055 bool "Extend builtin kernel arguments with bootloader arguments"
3060 config LOCKDEP_SUPPORT
3064 config STACKTRACE_SUPPORT
3068 config PGTABLE_LEVELS
3070 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3071 default 3 if 64BIT && !PAGE_SIZE_64KB
3074 config MIPS_AUTO_PFN_OFFSET
3077 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3079 config PCI_DRIVERS_GENERIC
3080 select PCI_DOMAINS_GENERIC if PCI
3083 config PCI_DRIVERS_LEGACY
3084 def_bool !PCI_DRIVERS_GENERIC
3085 select NO_GENERIC_PCI_IOPORT_MAP
3086 select PCI_DOMAINS if PCI
3089 # ISA support is now enabled via select. Too many systems still have the one
3090 # or other ISA chip on the board that users don't know about so don't expect
3091 # users to choose the right thing ...
3097 bool "TURBOchannel support"
3098 depends on MACH_DECSTATION
3100 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3101 processors. TURBOchannel programming specifications are available
3103 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3105 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3106 Linux driver support status is documented at:
3107 <http://www.linux-mips.org/wiki/DECstation>
3113 config ARCH_MMAP_RND_BITS_MIN
3117 config ARCH_MMAP_RND_BITS_MAX
3121 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3124 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3131 select MIPS_EXTERNAL_TIMER
3144 config MIPS32_COMPAT
3150 config SYSVIPC_COMPAT
3154 bool "Kernel support for o32 binaries"
3156 select ARCH_WANT_OLD_COMPAT_IPC
3158 select MIPS32_COMPAT
3159 select SYSVIPC_COMPAT if SYSVIPC
3161 Select this option if you want to run o32 binaries. These are pure
3162 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3163 existing binaries are in this format.
3168 bool "Kernel support for n32 binaries"
3170 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3172 select MIPS32_COMPAT
3173 select SYSVIPC_COMPAT if SYSVIPC
3175 Select this option if you want to run n32 binaries. These are
3176 64-bit binaries using 32-bit quantities for addressing and certain
3177 data that would normally be 64-bit. They are used in special
3184 default y if MIPS32_O32 || MIPS32_N32
3187 menu "Power management options"
3189 config ARCH_HIBERNATION_POSSIBLE
3191 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3193 config ARCH_SUSPEND_POSSIBLE
3195 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3197 source "kernel/power/Kconfig"
3201 config MIPS_EXTERNAL_TIMER
3204 menu "CPU Power Management"
3206 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3207 source "drivers/cpufreq/Kconfig"
3210 source "drivers/cpuidle/Kconfig"
3214 source "drivers/firmware/Kconfig"
3216 source "arch/mips/kvm/Kconfig"