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
187 select HAVE_LEGACY_CLK
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
217 select SYS_HAS_CPU_MIPS32_R2
218 select SYS_HAS_EARLY_PRINTK
219 select SYS_SUPPORTS_32BIT_KERNEL
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_MIPS16
222 select SYS_SUPPORTS_ZBOOT_UART_PROM
224 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
226 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
229 bool "Broadcom Generic BMIPS kernel"
230 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
231 select ARCH_HAS_PHYS_TO_DMA
233 select NO_EXCEPT_FILL
239 select BCM6345_L1_IRQ
240 select BCM7038_L1_IRQ
241 select BCM7120_L2_IRQ
242 select BRCMSTB_L2_IRQ
244 select DMA_NONCOHERENT
245 select SYS_SUPPORTS_32BIT_KERNEL
246 select SYS_SUPPORTS_LITTLE_ENDIAN
247 select SYS_SUPPORTS_BIG_ENDIAN
248 select SYS_SUPPORTS_HIGHMEM
249 select SYS_HAS_CPU_BMIPS32_3300
250 select SYS_HAS_CPU_BMIPS4350
251 select SYS_HAS_CPU_BMIPS4380
252 select SYS_HAS_CPU_BMIPS5000
254 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
255 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
256 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
257 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
258 select HARDIRQS_SW_RESEND
260 Build a generic DT-based kernel image that boots on select
261 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
262 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
263 must be set appropriately for your board.
266 bool "Broadcom BCM47XX based boards"
270 select DMA_NONCOHERENT
273 select SYS_HAS_CPU_MIPS32_R1
274 select NO_EXCEPT_FILL
275 select SYS_SUPPORTS_32BIT_KERNEL
276 select SYS_SUPPORTS_LITTLE_ENDIAN
277 select SYS_SUPPORTS_MIPS16
278 select SYS_SUPPORTS_ZBOOT
279 select SYS_HAS_EARLY_PRINTK
280 select USE_GENERIC_EARLY_PRINTK_8250
282 select LEDS_GPIO_REGISTER
285 select BCM47XX_SSB if !BCM47XX_BCMA
287 Support for BCM47XX based boards
290 bool "Broadcom BCM63XX based boards"
295 select DMA_NONCOHERENT
297 select SYS_SUPPORTS_32BIT_KERNEL
298 select SYS_SUPPORTS_BIG_ENDIAN
299 select SYS_HAS_EARLY_PRINTK
302 select MIPS_L1_CACHE_SHIFT_4
304 select HAVE_LEGACY_CLK
306 Support for BCM63XX based boards
313 select DMA_NONCOHERENT
319 select PCI_GT64XXX_PCI0
320 select SYS_HAS_CPU_NEVADA
321 select SYS_HAS_EARLY_PRINTK
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_64BIT_KERNEL
324 select SYS_SUPPORTS_LITTLE_ENDIAN
325 select USE_GENERIC_EARLY_PRINTK_8250
327 config MACH_DECSTATION
331 select CEVT_R4K if CPU_R4X00
333 select CSRC_R4K if CPU_R4X00
334 select CPU_DADDI_WORKAROUNDS if 64BIT
335 select CPU_R4000_WORKAROUNDS if 64BIT
336 select CPU_R4400_WORKAROUNDS if 64BIT
337 select DMA_NONCOHERENT
340 select SYS_HAS_CPU_R3000
341 select SYS_HAS_CPU_R4X00
342 select SYS_SUPPORTS_32BIT_KERNEL
343 select SYS_SUPPORTS_64BIT_KERNEL
344 select SYS_SUPPORTS_LITTLE_ENDIAN
345 select SYS_SUPPORTS_128HZ
346 select SYS_SUPPORTS_256HZ
347 select SYS_SUPPORTS_1024HZ
348 select MIPS_L1_CACHE_SHIFT_4
350 This enables support for DEC's MIPS based workstations. For details
351 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
352 DECstation porting pages on <http://decstation.unix-ag.org/>.
354 If you have one of the following DECstation Models you definitely
355 want to choose R4xx0 for the CPU Type:
362 otherwise choose R3000.
365 bool "Jazz family of machines"
368 select ARCH_MIGHT_HAVE_PC_PARPORT
369 select ARCH_MIGHT_HAVE_PC_SERIO
372 select ARCH_MAY_HAVE_PC_FDC
375 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
376 select GENERIC_ISA_DMA
377 select HAVE_PCSPKR_PLATFORM
382 select SYS_HAS_CPU_R4X00
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_64BIT_KERNEL
385 select SYS_SUPPORTS_100HZ
387 This a family of machines based on the MIPS R4030 chipset which was
388 used by several vendors to build RISC/os and Windows NT workstations.
389 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
390 Olivetti M700-10 workstations.
393 bool "Ingenic SoC based machines"
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_ZBOOT_UART16550
397 select CPU_SUPPORTS_HUGEPAGES
398 select DMA_NONCOHERENT
403 select GENERIC_IRQ_CHIP
404 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
408 bool "Lantiq based platforms"
409 select DMA_NONCOHERENT
413 select SYS_HAS_CPU_MIPS32_R1
414 select SYS_HAS_CPU_MIPS32_R2
415 select SYS_SUPPORTS_BIG_ENDIAN
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_MIPS16
418 select SYS_SUPPORTS_MULTITHREADING
419 select SYS_SUPPORTS_VPE_LOADER
420 select SYS_HAS_EARLY_PRINTK
425 select HAVE_LEGACY_CLK
428 select PINCTRL_LANTIQ
429 select ARCH_HAS_RESET_CONTROLLER
430 select RESET_CONTROLLER
432 config MACH_LOONGSON32
433 bool "Loongson 32-bit family of machines"
434 select SYS_SUPPORTS_ZBOOT
436 This enables support for the Loongson-1 family of machines.
438 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
439 the Institute of Computing Technology (ICT), Chinese Academy of
442 config MACH_LOONGSON2EF
443 bool "Loongson-2E/F family of machines"
444 select SYS_SUPPORTS_ZBOOT
446 This enables the support of early Loongson-2E/F family of machines.
448 config MACH_LOONGSON64
449 bool "Loongson 64-bit family of machines"
450 select ARCH_SPARSEMEM_ENABLE
451 select ARCH_MIGHT_HAVE_PC_PARPORT
452 select ARCH_MIGHT_HAVE_PC_SERIO
453 select GENERIC_ISA_DMA_SUPPORT_BROKEN
463 select NO_EXCEPT_FILL
464 select NR_CPUS_DEFAULT_64
465 select USE_GENERIC_EARLY_PRINTK_8250
466 select PCI_DRIVERS_GENERIC
467 select SYS_HAS_CPU_LOONGSON64
468 select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_SMP
470 select SYS_SUPPORTS_HOTPLUG_CPU
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_64BIT_KERNEL
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_LITTLE_ENDIAN
475 select SYS_SUPPORTS_ZBOOT
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
1111 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1117 config MIPS_CLOCK_VSYSCALL
1118 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1127 config ARCH_SUPPORTS_UPROBES
1130 config DMA_MAYBE_COHERENT
1131 select ARCH_HAS_DMA_COHERENCE_H
1132 select DMA_NONCOHERENT
1135 config DMA_PERDEV_COHERENT
1137 select ARCH_HAS_SETUP_DMA_OPS
1138 select DMA_NONCOHERENT
1140 config DMA_NONCOHERENT
1143 # MIPS allows mixing "slightly different" Cacheability and Coherency
1144 # Attribute bits. It is believed that the uncached access through
1145 # KSEG1 and the implementation specific "uncached accelerated" used
1146 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1147 # significant advantages.
1149 select ARCH_HAS_DMA_WRITE_COMBINE
1150 select ARCH_HAS_DMA_PREP_COHERENT
1151 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1152 select ARCH_HAS_DMA_SET_UNCACHED
1153 select DMA_NONCOHERENT_MMAP
1154 select DMA_NONCOHERENT_CACHE_SYNC
1155 select NEED_DMA_MAP_STATE
1157 config SYS_HAS_EARLY_PRINTK
1160 config SYS_SUPPORTS_HOTPLUG_CPU
1163 config MIPS_BONITO64
1175 config NO_IOPORT_MAP
1179 def_bool CPU_NO_LOAD_STORE_LR
1181 config GENERIC_ISA_DMA
1183 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1186 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1188 select GENERIC_ISA_DMA
1190 config HAVE_PLAT_DELAY
1193 config HAVE_PLAT_FW_INIT_CMDLINE
1196 config HAVE_PLAT_MEMCPY
1202 config HOLES_IN_ZONE
1205 config SYS_SUPPORTS_RELOCATABLE
1208 Selected if the platform supports relocating the kernel.
1209 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1210 to allow access to command line and entropy sources.
1212 config MIPS_CBPF_JIT
1214 depends on BPF_JIT && HAVE_CBPF_JIT
1216 config MIPS_EBPF_JIT
1218 depends on BPF_JIT && HAVE_EBPF_JIT
1222 # Endianness selection. Sufficiently obscure so many users don't know what to
1223 # answer,so we try hard to limit the available choices. Also the use of a
1224 # choice statement should be more obvious to the user.
1227 prompt "Endianness selection"
1229 Some MIPS machines can be configured for either little or big endian
1230 byte order. These modes require different kernels and a different
1231 Linux distribution. In general there is one preferred byteorder for a
1232 particular system but some systems are just as commonly used in the
1233 one or the other endianness.
1235 config CPU_BIG_ENDIAN
1237 depends on SYS_SUPPORTS_BIG_ENDIAN
1239 config CPU_LITTLE_ENDIAN
1240 bool "Little endian"
1241 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1248 config SYS_SUPPORTS_APM_EMULATION
1251 config SYS_SUPPORTS_BIG_ENDIAN
1254 config SYS_SUPPORTS_LITTLE_ENDIAN
1257 config SYS_SUPPORTS_HUGETLBFS
1259 depends on CPU_SUPPORTS_HUGEPAGES
1262 config MIPS_HUGE_TLB_SUPPORT
1263 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1280 config PCI_GT64XXX_PCI0
1283 config PCI_XTALK_BRIDGE
1286 config NO_EXCEPT_FILL
1294 select DMA_NONCOHERENT
1295 select SYS_HAS_CPU_MIPS32_R2
1296 select SYS_SUPPORTS_32BIT_KERNEL
1297 select SYS_SUPPORTS_LITTLE_ENDIAN
1298 select SYS_SUPPORTS_BIG_ENDIAN
1299 select SYS_SUPPORTS_MIPS16
1300 select CPU_MIPSR2_IRQ_VI
1309 config SWAP_IO_SPACE
1312 config SGI_HAS_INDYDOG
1324 config SGI_HAS_ZILOG
1327 config SGI_HAS_I8042
1330 config DEFAULT_SGI_PARTITION
1342 config MIPS_L1_CACHE_SHIFT_4
1345 config MIPS_L1_CACHE_SHIFT_5
1348 config MIPS_L1_CACHE_SHIFT_6
1351 config MIPS_L1_CACHE_SHIFT_7
1354 config MIPS_L1_CACHE_SHIFT
1356 default "7" if MIPS_L1_CACHE_SHIFT_7
1357 default "6" if MIPS_L1_CACHE_SHIFT_6
1358 default "5" if MIPS_L1_CACHE_SHIFT_5
1359 default "4" if MIPS_L1_CACHE_SHIFT_4
1362 config ARC_CMDLINE_ONLY
1366 bool "ARC console support"
1367 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1381 menu "CPU selection"
1387 config CPU_LOONGSON64
1388 bool "Loongson 64-bit CPU"
1389 depends on SYS_HAS_CPU_LOONGSON64
1390 select ARCH_HAS_PHYS_TO_DMA
1392 select CPU_HAS_PREFETCH
1393 select CPU_SUPPORTS_64BIT_KERNEL
1394 select CPU_SUPPORTS_HIGHMEM
1395 select CPU_SUPPORTS_HUGEPAGES
1396 select CPU_SUPPORTS_MSA
1397 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1398 select CPU_MIPSR2_IRQ_VI
1399 select WEAK_ORDERING
1400 select WEAK_REORDERING_BEYOND_LLSC
1401 select MIPS_ASID_BITS_VARIABLE
1402 select MIPS_PGD_C0_CONTEXT
1403 select MIPS_L1_CACHE_SHIFT_6
1407 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1408 cores implements the MIPS64R2 instruction set with many extensions,
1409 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1410 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1411 Loongson-2E/2F is not covered here and will be removed in future.
1413 config LOONGSON3_ENHANCEMENT
1414 bool "New Loongson-3 CPU Enhancements"
1416 depends on CPU_LOONGSON64
1418 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1419 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1420 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1421 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1422 Fast TLB refill support, etc.
1424 This option enable those enhancements which are not probed at run
1425 time. If you want a generic kernel to run on all Loongson 3 machines,
1426 please say 'N' here. If you want a high-performance kernel to run on
1427 new Loongson-3 machines only, please say 'Y' here.
1429 config CPU_LOONGSON3_WORKAROUNDS
1430 bool "Old Loongson-3 LLSC Workarounds"
1432 depends on CPU_LOONGSON64
1434 Loongson-3 processors have the llsc issues which require workarounds.
1435 Without workarounds the system may hang unexpectedly.
1437 Newer Loongson-3 will fix these issues and no workarounds are needed.
1438 The workarounds have no significant side effect on them but may
1439 decrease the performance of the system so this option should be
1440 disabled unless the kernel is intended to be run on old systems.
1442 If unsure, please say Y.
1444 config CPU_LOONGSON3_CPUCFG_EMULATION
1445 bool "Emulate the CPUCFG instruction on older Loongson cores"
1447 depends on CPU_LOONGSON64
1449 Loongson-3A R4 and newer have the CPUCFG instruction available for
1450 userland to query CPU capabilities, much like CPUID on x86. This
1451 option provides emulation of the instruction on older Loongson
1452 cores, back to Loongson-3A1000.
1454 If unsure, please say Y.
1456 config CPU_LOONGSON2E
1458 depends on SYS_HAS_CPU_LOONGSON2E
1459 select CPU_LOONGSON2EF
1461 The Loongson 2E processor implements the MIPS III instruction set
1462 with many extensions.
1464 It has an internal FPGA northbridge, which is compatible to
1467 config CPU_LOONGSON2F
1469 depends on SYS_HAS_CPU_LOONGSON2F
1470 select CPU_LOONGSON2EF
1473 The Loongson 2F processor implements the MIPS III instruction set
1474 with many extensions.
1476 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1477 have a similar programming interface with FPGA northbridge used in
1480 config CPU_LOONGSON1B
1482 depends on SYS_HAS_CPU_LOONGSON1B
1483 select CPU_LOONGSON32
1484 select LEDS_GPIO_REGISTER
1486 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1487 Release 1 instruction set and part of the MIPS32 Release 2
1490 config CPU_LOONGSON1C
1492 depends on SYS_HAS_CPU_LOONGSON1C
1493 select CPU_LOONGSON32
1494 select LEDS_GPIO_REGISTER
1496 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1497 Release 1 instruction set and part of the MIPS32 Release 2
1500 config CPU_MIPS32_R1
1501 bool "MIPS32 Release 1"
1502 depends on SYS_HAS_CPU_MIPS32_R1
1503 select CPU_HAS_PREFETCH
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1507 Choose this option to build a kernel for release 1 or later of the
1508 MIPS32 architecture. Most modern embedded systems with a 32-bit
1509 MIPS processor are based on a MIPS32 processor. If you know the
1510 specific type of processor in your system, choose those that one
1511 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1512 Release 2 of the MIPS32 architecture is available since several
1513 years so chances are you even have a MIPS32 Release 2 processor
1514 in which case you should choose CPU_MIPS32_R2 instead for better
1517 config CPU_MIPS32_R2
1518 bool "MIPS32 Release 2"
1519 depends on SYS_HAS_CPU_MIPS32_R2
1520 select CPU_HAS_PREFETCH
1521 select CPU_SUPPORTS_32BIT_KERNEL
1522 select CPU_SUPPORTS_HIGHMEM
1523 select CPU_SUPPORTS_MSA
1526 Choose this option to build a kernel for release 2 or later of the
1527 MIPS32 architecture. Most modern embedded systems with a 32-bit
1528 MIPS processor are based on a MIPS32 processor. If you know the
1529 specific type of processor in your system, choose those that one
1530 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1532 config CPU_MIPS32_R5
1533 bool "MIPS32 Release 5"
1534 depends on SYS_HAS_CPU_MIPS32_R5
1535 select CPU_HAS_PREFETCH
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_HIGHMEM
1538 select CPU_SUPPORTS_MSA
1540 select MIPS_O32_FP64_SUPPORT
1542 Choose this option to build a kernel for release 5 or later of the
1543 MIPS32 architecture. New MIPS processors, starting with the Warrior
1544 family, are based on a MIPS32r5 processor. If you own an older
1545 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1547 config CPU_MIPS32_R6
1548 bool "MIPS32 Release 6"
1549 depends on SYS_HAS_CPU_MIPS32_R6
1550 select CPU_HAS_PREFETCH
1551 select CPU_NO_LOAD_STORE_LR
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_HIGHMEM
1554 select CPU_SUPPORTS_MSA
1556 select MIPS_O32_FP64_SUPPORT
1558 Choose this option to build a kernel for release 6 or later of the
1559 MIPS32 architecture. New MIPS processors, starting with the Warrior
1560 family, are based on a MIPS32r6 processor. If you own an older
1561 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1563 config CPU_MIPS64_R1
1564 bool "MIPS64 Release 1"
1565 depends on SYS_HAS_CPU_MIPS64_R1
1566 select CPU_HAS_PREFETCH
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select CPU_SUPPORTS_HIGHMEM
1570 select CPU_SUPPORTS_HUGEPAGES
1572 Choose this option to build a kernel for release 1 or later of the
1573 MIPS64 architecture. Many modern embedded systems with a 64-bit
1574 MIPS processor are based on a MIPS64 processor. If you know the
1575 specific type of processor in your system, choose those that one
1576 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1577 Release 2 of the MIPS64 architecture is available since several
1578 years so chances are you even have a MIPS64 Release 2 processor
1579 in which case you should choose CPU_MIPS64_R2 instead for better
1582 config CPU_MIPS64_R2
1583 bool "MIPS64 Release 2"
1584 depends on SYS_HAS_CPU_MIPS64_R2
1585 select CPU_HAS_PREFETCH
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_SUPPORTS_64BIT_KERNEL
1588 select CPU_SUPPORTS_HIGHMEM
1589 select CPU_SUPPORTS_HUGEPAGES
1590 select CPU_SUPPORTS_MSA
1593 Choose this option to build a kernel for release 2 or later of the
1594 MIPS64 architecture. Many modern embedded systems with a 64-bit
1595 MIPS processor are based on a MIPS64 processor. If you know the
1596 specific type of processor in your system, choose those that one
1597 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1599 config CPU_MIPS64_R5
1600 bool "MIPS64 Release 5"
1601 depends on SYS_HAS_CPU_MIPS64_R5
1602 select CPU_HAS_PREFETCH
1603 select CPU_SUPPORTS_32BIT_KERNEL
1604 select CPU_SUPPORTS_64BIT_KERNEL
1605 select CPU_SUPPORTS_HIGHMEM
1606 select CPU_SUPPORTS_HUGEPAGES
1607 select CPU_SUPPORTS_MSA
1608 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1611 Choose this option to build a kernel for release 5 or later of the
1612 MIPS64 architecture. This is a intermediate MIPS architecture
1613 release partly implementing release 6 features. Though there is no
1614 any hardware known to be based on this release.
1616 config CPU_MIPS64_R6
1617 bool "MIPS64 Release 6"
1618 depends on SYS_HAS_CPU_MIPS64_R6
1619 select CPU_HAS_PREFETCH
1620 select CPU_NO_LOAD_STORE_LR
1621 select CPU_SUPPORTS_32BIT_KERNEL
1622 select CPU_SUPPORTS_64BIT_KERNEL
1623 select CPU_SUPPORTS_HIGHMEM
1624 select CPU_SUPPORTS_HUGEPAGES
1625 select CPU_SUPPORTS_MSA
1626 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1629 Choose this option to build a kernel for release 6 or later of the
1630 MIPS64 architecture. New MIPS processors, starting with the Warrior
1631 family, are based on a MIPS64r6 processor. If you own an older
1632 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1635 bool "MIPS Warrior P5600"
1636 depends on SYS_HAS_CPU_P5600
1637 select CPU_HAS_PREFETCH
1638 select CPU_SUPPORTS_32BIT_KERNEL
1639 select CPU_SUPPORTS_HIGHMEM
1640 select CPU_SUPPORTS_MSA
1641 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1642 select CPU_SUPPORTS_CPUFREQ
1643 select CPU_MIPSR2_IRQ_VI
1644 select CPU_MIPSR2_IRQ_EI
1646 select MIPS_O32_FP64_SUPPORT
1648 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1649 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1650 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1651 level features like up to six P5600 calculation cores, CM2 with L2
1652 cache, IOCU/IOMMU (though might be unused depending on the system-
1653 specific IP core configuration), GIC, CPC, virtualisation module,
1658 depends on SYS_HAS_CPU_R3000
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_SUPPORTS_HIGHMEM
1664 Please make sure to pick the right CPU type. Linux/MIPS is not
1665 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1666 *not* work on R4000 machines and vice versa. However, since most
1667 of the supported machines have an R4000 (or similar) CPU, R4x00
1668 might be a safe bet. If the resulting kernel does not work,
1669 try to recompile with R3000.
1673 depends on SYS_HAS_CPU_TX39XX
1674 select CPU_SUPPORTS_32BIT_KERNEL
1679 depends on SYS_HAS_CPU_VR41XX
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_64BIT_KERNEL
1683 The options selects support for the NEC VR4100 series of processors.
1684 Only choose this option if you have one of these processors as a
1685 kernel built with this option will not run on any other type of
1686 processor or vice versa.
1690 depends on SYS_HAS_CPU_R4X00
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HUGEPAGES
1695 MIPS Technologies R4000-series processors other than 4300, including
1696 the R4000, R4400, R4600, and 4700.
1700 depends on SYS_HAS_CPU_TX49XX
1701 select CPU_HAS_PREFETCH
1702 select CPU_SUPPORTS_32BIT_KERNEL
1703 select CPU_SUPPORTS_64BIT_KERNEL
1704 select CPU_SUPPORTS_HUGEPAGES
1708 depends on SYS_HAS_CPU_R5000
1709 select CPU_SUPPORTS_32BIT_KERNEL
1710 select CPU_SUPPORTS_64BIT_KERNEL
1711 select CPU_SUPPORTS_HUGEPAGES
1713 MIPS Technologies R5000-series processors other than the Nevada.
1717 depends on SYS_HAS_CPU_R5500
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select CPU_SUPPORTS_HUGEPAGES
1722 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1727 depends on SYS_HAS_CPU_NEVADA
1728 select CPU_SUPPORTS_32BIT_KERNEL
1729 select CPU_SUPPORTS_64BIT_KERNEL
1730 select CPU_SUPPORTS_HUGEPAGES
1732 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1736 depends on SYS_HAS_CPU_R10000
1737 select CPU_HAS_PREFETCH
1738 select CPU_SUPPORTS_32BIT_KERNEL
1739 select CPU_SUPPORTS_64BIT_KERNEL
1740 select CPU_SUPPORTS_HIGHMEM
1741 select CPU_SUPPORTS_HUGEPAGES
1743 MIPS Technologies R10000-series processors.
1747 depends on SYS_HAS_CPU_RM7000
1748 select CPU_HAS_PREFETCH
1749 select CPU_SUPPORTS_32BIT_KERNEL
1750 select CPU_SUPPORTS_64BIT_KERNEL
1751 select CPU_SUPPORTS_HIGHMEM
1752 select CPU_SUPPORTS_HUGEPAGES
1756 depends on SYS_HAS_CPU_SB1
1757 select CPU_SUPPORTS_32BIT_KERNEL
1758 select CPU_SUPPORTS_64BIT_KERNEL
1759 select CPU_SUPPORTS_HIGHMEM
1760 select CPU_SUPPORTS_HUGEPAGES
1761 select WEAK_ORDERING
1763 config CPU_CAVIUM_OCTEON
1764 bool "Cavium Octeon processor"
1765 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1766 select CPU_HAS_PREFETCH
1767 select CPU_SUPPORTS_64BIT_KERNEL
1768 select WEAK_ORDERING
1769 select CPU_SUPPORTS_HIGHMEM
1770 select CPU_SUPPORTS_HUGEPAGES
1771 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1772 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1773 select MIPS_L1_CACHE_SHIFT_7
1776 The Cavium Octeon processor is a highly integrated chip containing
1777 many ethernet hardware widgets for networking tasks. The processor
1778 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1779 Full details can be found at http://www.caviumnetworks.com.
1782 bool "Broadcom BMIPS"
1783 depends on SYS_HAS_CPU_BMIPS
1785 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1786 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1787 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1788 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1789 select CPU_SUPPORTS_32BIT_KERNEL
1790 select DMA_NONCOHERENT
1792 select SWAP_IO_SPACE
1793 select WEAK_ORDERING
1794 select CPU_SUPPORTS_HIGHMEM
1795 select CPU_HAS_PREFETCH
1796 select CPU_SUPPORTS_CPUFREQ
1797 select MIPS_EXTERNAL_TIMER
1799 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1802 bool "Netlogic XLR SoC"
1803 depends on SYS_HAS_CPU_XLR
1804 select CPU_SUPPORTS_32BIT_KERNEL
1805 select CPU_SUPPORTS_64BIT_KERNEL
1806 select CPU_SUPPORTS_HIGHMEM
1807 select CPU_SUPPORTS_HUGEPAGES
1808 select WEAK_ORDERING
1809 select WEAK_REORDERING_BEYOND_LLSC
1811 Netlogic Microsystems XLR/XLS processors.
1814 bool "Netlogic XLP SoC"
1815 depends on SYS_HAS_CPU_XLP
1816 select CPU_SUPPORTS_32BIT_KERNEL
1817 select CPU_SUPPORTS_64BIT_KERNEL
1818 select CPU_SUPPORTS_HIGHMEM
1819 select WEAK_ORDERING
1820 select WEAK_REORDERING_BEYOND_LLSC
1821 select CPU_HAS_PREFETCH
1823 select CPU_SUPPORTS_HUGEPAGES
1824 select MIPS_ASID_BITS_VARIABLE
1826 Netlogic Microsystems XLP processors.
1829 config CPU_MIPS32_3_5_FEATURES
1830 bool "MIPS32 Release 3.5 Features"
1831 depends on SYS_HAS_CPU_MIPS32_R3_5
1832 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1835 Choose this option to build a kernel for release 2 or later of the
1836 MIPS32 architecture including features from the 3.5 release such as
1837 support for Enhanced Virtual Addressing (EVA).
1839 config CPU_MIPS32_3_5_EVA
1840 bool "Enhanced Virtual Addressing (EVA)"
1841 depends on CPU_MIPS32_3_5_FEATURES
1845 Choose this option if you want to enable the Enhanced Virtual
1846 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1847 One of its primary benefits is an increase in the maximum size
1848 of lowmem (up to 3GB). If unsure, say 'N' here.
1850 config CPU_MIPS32_R5_FEATURES
1851 bool "MIPS32 Release 5 Features"
1852 depends on SYS_HAS_CPU_MIPS32_R5
1853 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1855 Choose this option to build a kernel for release 2 or later of the
1856 MIPS32 architecture including features from release 5 such as
1857 support for Extended Physical Addressing (XPA).
1859 config CPU_MIPS32_R5_XPA
1860 bool "Extended Physical Addressing (XPA)"
1861 depends on CPU_MIPS32_R5_FEATURES
1863 depends on !PAGE_SIZE_4KB
1864 depends on SYS_SUPPORTS_HIGHMEM
1867 select PHYS_ADDR_T_64BIT
1870 Choose this option if you want to enable the Extended Physical
1871 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1872 benefit is to increase physical addressing equal to or greater
1873 than 40 bits. Note that this has the side effect of turning on
1874 64-bit addressing which in turn makes the PTEs 64-bit in size.
1875 If unsure, say 'N' here.
1878 config CPU_NOP_WORKAROUNDS
1881 config CPU_JUMP_WORKAROUNDS
1884 config CPU_LOONGSON2F_WORKAROUNDS
1885 bool "Loongson 2F Workarounds"
1887 select CPU_NOP_WORKAROUNDS
1888 select CPU_JUMP_WORKAROUNDS
1890 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1891 require workarounds. Without workarounds the system may hang
1892 unexpectedly. For more information please refer to the gas
1893 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1895 Loongson 2F03 and later have fixed these issues and no workarounds
1896 are needed. The workarounds have no significant side effect on them
1897 but may decrease the performance of the system so this option should
1898 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1901 If unsure, please say Y.
1902 endif # CPU_LOONGSON2F
1904 config SYS_SUPPORTS_ZBOOT
1906 select HAVE_KERNEL_GZIP
1907 select HAVE_KERNEL_BZIP2
1908 select HAVE_KERNEL_LZ4
1909 select HAVE_KERNEL_LZMA
1910 select HAVE_KERNEL_LZO
1911 select HAVE_KERNEL_XZ
1913 config SYS_SUPPORTS_ZBOOT_UART16550
1915 select SYS_SUPPORTS_ZBOOT
1917 config SYS_SUPPORTS_ZBOOT_UART_PROM
1919 select SYS_SUPPORTS_ZBOOT
1921 config CPU_LOONGSON2EF
1923 select CPU_SUPPORTS_32BIT_KERNEL
1924 select CPU_SUPPORTS_64BIT_KERNEL
1925 select CPU_SUPPORTS_HIGHMEM
1926 select CPU_SUPPORTS_HUGEPAGES
1927 select ARCH_HAS_PHYS_TO_DMA
1929 config CPU_LOONGSON32
1933 select CPU_HAS_PREFETCH
1934 select CPU_SUPPORTS_32BIT_KERNEL
1935 select CPU_SUPPORTS_HIGHMEM
1936 select CPU_SUPPORTS_CPUFREQ
1938 config CPU_BMIPS32_3300
1939 select SMP_UP if SMP
1942 config CPU_BMIPS4350
1944 select SYS_SUPPORTS_SMP
1945 select SYS_SUPPORTS_HOTPLUG_CPU
1947 config CPU_BMIPS4380
1949 select MIPS_L1_CACHE_SHIFT_6
1950 select SYS_SUPPORTS_SMP
1951 select SYS_SUPPORTS_HOTPLUG_CPU
1954 config CPU_BMIPS5000
1956 select MIPS_CPU_SCACHE
1957 select MIPS_L1_CACHE_SHIFT_7
1958 select SYS_SUPPORTS_SMP
1959 select SYS_SUPPORTS_HOTPLUG_CPU
1962 config SYS_HAS_CPU_LOONGSON64
1964 select CPU_SUPPORTS_CPUFREQ
1967 config SYS_HAS_CPU_LOONGSON2E
1970 config SYS_HAS_CPU_LOONGSON2F
1972 select CPU_SUPPORTS_CPUFREQ
1973 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1975 config SYS_HAS_CPU_LOONGSON1B
1978 config SYS_HAS_CPU_LOONGSON1C
1981 config SYS_HAS_CPU_MIPS32_R1
1984 config SYS_HAS_CPU_MIPS32_R2
1987 config SYS_HAS_CPU_MIPS32_R3_5
1990 config SYS_HAS_CPU_MIPS32_R5
1992 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1994 config SYS_HAS_CPU_MIPS32_R6
1996 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1998 config SYS_HAS_CPU_MIPS64_R1
2001 config SYS_HAS_CPU_MIPS64_R2
2004 config SYS_HAS_CPU_MIPS64_R6
2006 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2008 config SYS_HAS_CPU_P5600
2010 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2012 config SYS_HAS_CPU_R3000
2015 config SYS_HAS_CPU_TX39XX
2018 config SYS_HAS_CPU_VR41XX
2021 config SYS_HAS_CPU_R4X00
2024 config SYS_HAS_CPU_TX49XX
2027 config SYS_HAS_CPU_R5000
2030 config SYS_HAS_CPU_R5500
2033 config SYS_HAS_CPU_NEVADA
2036 config SYS_HAS_CPU_R10000
2038 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2040 config SYS_HAS_CPU_RM7000
2043 config SYS_HAS_CPU_SB1
2046 config SYS_HAS_CPU_CAVIUM_OCTEON
2049 config SYS_HAS_CPU_BMIPS
2052 config SYS_HAS_CPU_BMIPS32_3300
2054 select SYS_HAS_CPU_BMIPS
2056 config SYS_HAS_CPU_BMIPS4350
2058 select SYS_HAS_CPU_BMIPS
2060 config SYS_HAS_CPU_BMIPS4380
2062 select SYS_HAS_CPU_BMIPS
2064 config SYS_HAS_CPU_BMIPS5000
2066 select SYS_HAS_CPU_BMIPS
2067 select ARCH_HAS_SYNC_DMA_FOR_CPU
2069 config SYS_HAS_CPU_XLR
2072 config SYS_HAS_CPU_XLP
2076 # CPU may reorder R->R, R->W, W->R, W->W
2077 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2079 config WEAK_ORDERING
2083 # CPU may reorder reads and writes beyond LL/SC
2084 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2086 config WEAK_REORDERING_BEYOND_LLSC
2091 # These two indicate any level of the MIPS32 and MIPS64 architecture
2095 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2096 CPU_MIPS32_R6 || CPU_P5600
2100 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2104 # These indicate the revision of the architecture
2108 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2112 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2114 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2119 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2121 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2126 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2128 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2129 select HAVE_ARCH_BITREVERSE
2130 select MIPS_ASID_BITS_VARIABLE
2131 select MIPS_CRC_SUPPORT
2134 config TARGET_ISA_REV
2136 default 1 if CPU_MIPSR1
2137 default 2 if CPU_MIPSR2
2138 default 5 if CPU_MIPSR5
2139 default 6 if CPU_MIPSR6
2142 Reflects the ISA revision being targeted by the kernel build. This
2143 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2151 config SYS_SUPPORTS_32BIT_KERNEL
2153 config SYS_SUPPORTS_64BIT_KERNEL
2155 config CPU_SUPPORTS_32BIT_KERNEL
2157 config CPU_SUPPORTS_64BIT_KERNEL
2159 config CPU_SUPPORTS_CPUFREQ
2161 config CPU_SUPPORTS_ADDRWINCFG
2163 config CPU_SUPPORTS_HUGEPAGES
2165 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2166 config MIPS_PGD_C0_CONTEXT
2168 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2171 # Set to y for ptrace access to watch registers.
2173 config HARDWARE_WATCHPOINTS
2175 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2180 prompt "Kernel code model"
2182 You should only select this option if you have a workload that
2183 actually benefits from 64-bit processing or if your machine has
2184 large memory. You will only be presented a single option in this
2185 menu if your system does not support both 32-bit and 64-bit kernels.
2188 bool "32-bit kernel"
2189 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2192 Select this option if you want to build a 32-bit kernel.
2195 bool "64-bit kernel"
2196 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2198 Select this option if you want to build a 64-bit kernel.
2203 bool "KVM Guest Kernel"
2204 depends on BROKEN_ON_SMP
2206 Select this option if building a guest kernel for KVM (Trap & Emulate)
2209 config KVM_GUEST_TIMER_FREQ
2210 int "Count/Compare Timer Frequency (MHz)"
2211 depends on KVM_GUEST
2214 Set this to non-zero if building a guest kernel for KVM to skip RTC
2215 emulation when determining guest CPU Frequency. Instead, the guest's
2216 timer frequency is specified directly.
2218 config MIPS_VA_BITS_48
2219 bool "48 bits virtual memory"
2222 Support a maximum at least 48 bits of application virtual
2223 memory. Default is 40 bits or less, depending on the CPU.
2224 For page sizes 16k and above, this option results in a small
2225 memory overhead for page tables. For 4k page size, a fourth
2226 level of page tables is added which imposes both a memory
2227 overhead as well as slower TLB fault handling.
2232 prompt "Kernel page size"
2233 default PAGE_SIZE_4KB
2235 config PAGE_SIZE_4KB
2237 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2239 This option select the standard 4kB Linux page size. On some
2240 R3000-family processors this is the only available page size. Using
2241 4kB page size will minimize memory consumption and is therefore
2242 recommended for low memory systems.
2244 config PAGE_SIZE_8KB
2246 depends on CPU_CAVIUM_OCTEON
2247 depends on !MIPS_VA_BITS_48
2249 Using 8kB page size will result in higher performance kernel at
2250 the price of higher memory consumption. This option is available
2251 only on cnMIPS processors. Note that you will need a suitable Linux
2252 distribution to support this.
2254 config PAGE_SIZE_16KB
2256 depends on !CPU_R3000 && !CPU_TX39XX
2258 Using 16kB page size will result in higher performance kernel at
2259 the price of higher memory consumption. This option is available on
2260 all non-R3000 family processors. Note that you will need a suitable
2261 Linux distribution to support this.
2263 config PAGE_SIZE_32KB
2265 depends on CPU_CAVIUM_OCTEON
2266 depends on !MIPS_VA_BITS_48
2268 Using 32kB page size will result in higher performance kernel at
2269 the price of higher memory consumption. This option is available
2270 only on cnMIPS cores. Note that you will need a suitable Linux
2271 distribution to support this.
2273 config PAGE_SIZE_64KB
2275 depends on !CPU_R3000 && !CPU_TX39XX
2277 Using 64kB page size will result in higher performance kernel at
2278 the price of higher memory consumption. This option is available on
2279 all non-R3000 family processor. Not that at the time of this
2280 writing this option is still high experimental.
2284 config FORCE_MAX_ZONEORDER
2285 int "Maximum zone order"
2286 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2287 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2288 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2289 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2290 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2291 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2295 The kernel memory allocator divides physically contiguous memory
2296 blocks into "zones", where each zone is a power of two number of
2297 pages. This option selects the largest power of two that the kernel
2298 keeps in the memory allocator. If you need to allocate very large
2299 blocks of physically contiguous memory, then you may need to
2300 increase this value.
2302 This config option is actually maximum order plus one. For example,
2303 a value of 11 means that the largest free memory block is 2^10 pages.
2305 The page size is not necessarily 4KB. Keep this in mind
2306 when choosing a value for this option.
2311 config IP22_CPU_SCACHE
2316 # Support for a MIPS32 / MIPS64 style S-caches
2318 config MIPS_CPU_SCACHE
2322 config R5000_CPU_SCACHE
2326 config RM7000_CPU_SCACHE
2330 config SIBYTE_DMA_PAGEOPS
2331 bool "Use DMA to clear/copy pages"
2334 Instead of using the CPU to zero and copy pages, use a Data Mover
2335 channel. These DMA channels are otherwise unused by the standard
2336 SiByte Linux port. Seems to give a small performance benefit.
2338 config CPU_HAS_PREFETCH
2341 config CPU_GENERIC_DUMP_TLB
2343 default y if !(CPU_R3000 || CPU_TX39XX)
2345 config MIPS_FP_SUPPORT
2346 bool "Floating Point support" if EXPERT
2349 Select y to include support for floating point in the kernel
2350 including initialization of FPU hardware, FP context save & restore
2351 and emulation of an FPU where necessary. Without this support any
2352 userland program attempting to use floating point instructions will
2355 If you know that your userland will not attempt to use floating point
2356 instructions then you can say n here to shrink the kernel a little.
2360 config CPU_R2300_FPU
2362 depends on MIPS_FP_SUPPORT
2363 default y if CPU_R3000 || CPU_TX39XX
2370 depends on MIPS_FP_SUPPORT
2371 default y if !CPU_R2300_FPU
2373 config CPU_R4K_CACHE_TLB
2375 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2378 bool "MIPS MT SMP support (1 TC on each available VPE)"
2380 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2381 select CPU_MIPSR2_IRQ_VI
2382 select CPU_MIPSR2_IRQ_EI
2387 select SYS_SUPPORTS_SMP
2388 select SYS_SUPPORTS_SCHED_SMT
2389 select MIPS_PERF_SHARED_TC_COUNTERS
2391 This is a kernel model which is known as SMVP. This is supported
2392 on cores with the MT ASE and uses the available VPEs to implement
2393 virtual processors which supports SMP. This is equivalent to the
2394 Intel Hyperthreading feature. For further information go to
2395 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2401 bool "SMT (multithreading) scheduler support"
2402 depends on SYS_SUPPORTS_SCHED_SMT
2405 SMT scheduler support improves the CPU scheduler's decision making
2406 when dealing with MIPS MT enabled cores at a cost of slightly
2407 increased overhead in some places. If unsure say N here.
2409 config SYS_SUPPORTS_SCHED_SMT
2412 config SYS_SUPPORTS_MULTITHREADING
2415 config MIPS_MT_FPAFF
2416 bool "Dynamic FPU affinity for FP-intensive threads"
2418 depends on MIPS_MT_SMP
2420 config MIPSR2_TO_R6_EMULATOR
2421 bool "MIPS R2-to-R6 emulator"
2422 depends on CPU_MIPSR6
2423 depends on MIPS_FP_SUPPORT
2426 Choose this option if you want to run non-R6 MIPS userland code.
2427 Even if you say 'Y' here, the emulator will still be disabled by
2428 default. You can enable it using the 'mipsr2emu' kernel option.
2429 The only reason this is a build-time option is to save ~14K from the
2432 config SYS_SUPPORTS_VPE_LOADER
2434 depends on SYS_SUPPORTS_MULTITHREADING
2436 Indicates that the platform supports the VPE loader, and provides
2439 config MIPS_VPE_LOADER
2440 bool "VPE loader support."
2441 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2442 select CPU_MIPSR2_IRQ_VI
2443 select CPU_MIPSR2_IRQ_EI
2446 Includes a loader for loading an elf relocatable object
2447 onto another VPE and running it.
2449 config MIPS_VPE_LOADER_CMP
2452 depends on MIPS_VPE_LOADER && MIPS_CMP
2454 config MIPS_VPE_LOADER_MT
2457 depends on MIPS_VPE_LOADER && !MIPS_CMP
2459 config MIPS_VPE_LOADER_TOM
2460 bool "Load VPE program into memory hidden from linux"
2461 depends on MIPS_VPE_LOADER
2464 The loader can use memory that is present but has been hidden from
2465 Linux using the kernel command line option "mem=xxMB". It's up to
2466 you to ensure the amount you put in the option and the space your
2467 program requires is less or equal to the amount physically present.
2469 config MIPS_VPE_APSP_API
2470 bool "Enable support for AP/SP API (RTLX)"
2471 depends on MIPS_VPE_LOADER
2473 config MIPS_VPE_APSP_API_CMP
2476 depends on MIPS_VPE_APSP_API && MIPS_CMP
2478 config MIPS_VPE_APSP_API_MT
2481 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2484 bool "MIPS CMP framework support (DEPRECATED)"
2485 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2488 select SYS_SUPPORTS_SMP
2489 select WEAK_ORDERING
2492 Select this if you are using a bootloader which implements the "CMP
2493 framework" protocol (ie. YAMON) and want your kernel to make use of
2494 its ability to start secondary CPUs.
2496 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2500 bool "MIPS Coherent Processing System support"
2501 depends on SYS_SUPPORTS_MIPS_CPS
2503 select MIPS_CPS_PM if HOTPLUG_CPU
2505 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2506 select SYS_SUPPORTS_HOTPLUG_CPU
2507 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2508 select SYS_SUPPORTS_SMP
2509 select WEAK_ORDERING
2511 Select this if you wish to run an SMP kernel across multiple cores
2512 within a MIPS Coherent Processing System. When this option is
2513 enabled the kernel will probe for other cores and boot them with
2514 no external assistance. It is safe to enable this when hardware
2515 support is unavailable.
2528 config SB1_PASS_2_WORKAROUNDS
2530 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2533 config SB1_PASS_2_1_WORKAROUNDS
2535 depends on CPU_SB1 && CPU_SB1_PASS_2
2539 prompt "SmartMIPS or microMIPS ASE support"
2541 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2544 Select this if you want neither microMIPS nor SmartMIPS support
2546 config CPU_HAS_SMARTMIPS
2547 depends on SYS_SUPPORTS_SMARTMIPS
2550 SmartMIPS is a extension of the MIPS32 architecture aimed at
2551 increased security at both hardware and software level for
2552 smartcards. Enabling this option will allow proper use of the
2553 SmartMIPS instructions by Linux applications. However a kernel with
2554 this option will not work on a MIPS core without SmartMIPS core. If
2555 you don't know you probably don't have SmartMIPS and should say N
2558 config CPU_MICROMIPS
2559 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2562 When this option is enabled the kernel will be built using the
2568 bool "Support for the MIPS SIMD Architecture"
2569 depends on CPU_SUPPORTS_MSA
2570 depends on MIPS_FP_SUPPORT
2571 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2573 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2574 and a set of SIMD instructions to operate on them. When this option
2575 is enabled the kernel will support allocating & switching MSA
2576 vector register contexts. If you know that your kernel will only be
2577 running on CPUs which do not support MSA or that your userland will
2578 not be making use of it then you may wish to say N here to reduce
2579 the size & complexity of your kernel.
2590 depends on !CPU_DIEI_BROKEN
2593 config CPU_DIEI_BROKEN
2599 config CPU_NO_LOAD_STORE_LR
2602 CPU lacks support for unaligned load and store instructions:
2603 LWL, LWR, SWL, SWR (Load/store word left/right).
2604 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2608 # Vectored interrupt mode is an R2 feature
2610 config CPU_MIPSR2_IRQ_VI
2614 # Extended interrupt mode is an R2 feature
2616 config CPU_MIPSR2_IRQ_EI
2621 depends on !CPU_R3000
2627 config CPU_DADDI_WORKAROUNDS
2630 config CPU_R4000_WORKAROUNDS
2632 select CPU_R4400_WORKAROUNDS
2634 config CPU_R4400_WORKAROUNDS
2637 config CPU_R4X00_BUGS64
2639 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2641 config MIPS_ASID_SHIFT
2643 default 6 if CPU_R3000 || CPU_TX39XX
2646 config MIPS_ASID_BITS
2648 default 0 if MIPS_ASID_BITS_VARIABLE
2649 default 6 if CPU_R3000 || CPU_TX39XX
2652 config MIPS_ASID_BITS_VARIABLE
2655 config MIPS_CRC_SUPPORT
2659 # - Highmem only makes sense for the 32-bit kernel.
2660 # - The current highmem code will only work properly on physically indexed
2661 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2662 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2663 # moment we protect the user and offer the highmem option only on machines
2664 # where it's known to be safe. This will not offer highmem on a few systems
2665 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2666 # indexed CPUs but we're playing safe.
2667 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2668 # know they might have memory configurations that could make use of highmem
2672 bool "High Memory Support"
2673 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2675 config CPU_SUPPORTS_HIGHMEM
2678 config SYS_SUPPORTS_HIGHMEM
2681 config SYS_SUPPORTS_SMARTMIPS
2684 config SYS_SUPPORTS_MICROMIPS
2687 config SYS_SUPPORTS_MIPS16
2690 This option must be set if a kernel might be executed on a MIPS16-
2691 enabled CPU even if MIPS16 is not actually being used. In other
2692 words, it makes the kernel MIPS16-tolerant.
2694 config CPU_SUPPORTS_MSA
2697 config ARCH_FLATMEM_ENABLE
2699 depends on !NUMA && !CPU_LOONGSON2EF
2701 config ARCH_SPARSEMEM_ENABLE
2703 select SPARSEMEM_STATIC if !SGI_IP27
2707 depends on SYS_SUPPORTS_NUMA
2709 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2710 Access). This option improves performance on systems with more
2711 than two nodes; on two node systems it is generally better to
2712 leave it disabled; on single node systems leave this option
2715 config SYS_SUPPORTS_NUMA
2718 config HAVE_SETUP_PER_CPU_AREA
2722 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2727 bool "Relocatable kernel"
2728 depends on SYS_SUPPORTS_RELOCATABLE
2729 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2730 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2731 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2732 CPU_P5600 || CAVIUM_OCTEON_SOC
2734 This builds a kernel image that retains relocation information
2735 so it can be loaded someplace besides the default 1MB.
2736 The relocations make the kernel binary about 15% larger,
2737 but are discarded at runtime
2739 config RELOCATION_TABLE_SIZE
2740 hex "Relocation table size"
2741 depends on RELOCATABLE
2742 range 0x0 0x01000000
2743 default "0x00100000"
2745 A table of relocation data will be appended to the kernel binary
2746 and parsed at boot to fix up the relocated kernel.
2748 This option allows the amount of space reserved for the table to be
2749 adjusted, although the default of 1Mb should be ok in most cases.
2751 The build will fail and a valid size suggested if this is too small.
2753 If unsure, leave at the default value.
2755 config RANDOMIZE_BASE
2756 bool "Randomize the address of the kernel image"
2757 depends on RELOCATABLE
2759 Randomizes the physical and virtual address at which the
2760 kernel image is loaded, as a security feature that
2761 deters exploit attempts relying on knowledge of the location
2762 of kernel internals.
2764 Entropy is generated using any coprocessor 0 registers available.
2766 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2770 config RANDOMIZE_BASE_MAX_OFFSET
2771 hex "Maximum kASLR offset" if EXPERT
2772 depends on RANDOMIZE_BASE
2773 range 0x0 0x40000000 if EVA || 64BIT
2774 range 0x0 0x08000000
2775 default "0x01000000"
2777 When kASLR is active, this provides the maximum offset that will
2778 be applied to the kernel image. It should be set according to the
2779 amount of physical RAM available in the target system minus
2780 PHYSICAL_START and must be a power of 2.
2782 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2783 EVA or 64-bit. The default is 16Mb.
2788 depends on NEED_MULTIPLE_NODES
2790 config HW_PERF_EVENTS
2791 bool "Enable hardware performance counter support for perf events"
2792 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2795 Enable hardware performance counter support for perf events. If
2796 disabled, perf events will use software events only.
2799 bool "Enable DMI scanning"
2800 depends on MACH_LOONGSON64
2801 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2804 Enabled scanning of DMI to identify machine quirks. Say Y
2805 here unless you have verified that your setup is not
2806 affected by entries in the DMI blacklist. Required by PNP
2810 bool "Multi-Processing support"
2811 depends on SYS_SUPPORTS_SMP
2813 This enables support for systems with more than one CPU. If you have
2814 a system with only one CPU, say N. If you have a system with more
2815 than one CPU, say Y.
2817 If you say N here, the kernel will run on uni- and multiprocessor
2818 machines, but will use only one CPU of a multiprocessor machine. If
2819 you say Y here, the kernel will run on many, but not all,
2820 uniprocessor machines. On a uniprocessor machine, the kernel
2821 will run faster if you say N here.
2823 People using multiprocessor machines who say Y here should also say
2824 Y to "Enhanced Real Time Clock Support", below.
2826 See also the SMP-HOWTO available at
2827 <http://www.tldp.org/docs.html#howto>.
2829 If you don't know what to do here, say N.
2832 bool "Support for hot-pluggable CPUs"
2833 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2835 Say Y here to allow turning CPUs off and on. CPUs can be
2836 controlled through /sys/devices/system/cpu.
2837 (Note: power management support will enable this option
2838 automatically on SMP systems. )
2839 Say N if you want to disable CPU hotplug.
2844 config SYS_SUPPORTS_MIPS_CMP
2847 config SYS_SUPPORTS_MIPS_CPS
2850 config SYS_SUPPORTS_SMP
2853 config NR_CPUS_DEFAULT_4
2856 config NR_CPUS_DEFAULT_8
2859 config NR_CPUS_DEFAULT_16
2862 config NR_CPUS_DEFAULT_32
2865 config NR_CPUS_DEFAULT_64
2869 int "Maximum number of CPUs (2-256)"
2872 default "4" if NR_CPUS_DEFAULT_4
2873 default "8" if NR_CPUS_DEFAULT_8
2874 default "16" if NR_CPUS_DEFAULT_16
2875 default "32" if NR_CPUS_DEFAULT_32
2876 default "64" if NR_CPUS_DEFAULT_64
2878 This allows you to specify the maximum number of CPUs which this
2879 kernel will support. The maximum supported value is 32 for 32-bit
2880 kernel and 64 for 64-bit kernels; the minimum value which makes
2881 sense is 1 for Qemu (useful only for kernel debugging purposes)
2882 and 2 for all others.
2884 This is purely to save memory - each supported CPU adds
2885 approximately eight kilobytes to the kernel image. For best
2886 performance should round up your number of processors to the next
2889 config MIPS_PERF_SHARED_TC_COUNTERS
2892 config MIPS_NR_CPU_NR_MAP_1024
2895 config MIPS_NR_CPU_NR_MAP
2898 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2899 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2902 # Timer Interrupt Frequency Configuration
2906 prompt "Timer frequency"
2909 Allows the configuration of the timer frequency.
2912 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2915 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2918 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2921 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2924 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2927 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2930 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2933 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2937 config SYS_SUPPORTS_24HZ
2940 config SYS_SUPPORTS_48HZ
2943 config SYS_SUPPORTS_100HZ
2946 config SYS_SUPPORTS_128HZ
2949 config SYS_SUPPORTS_250HZ
2952 config SYS_SUPPORTS_256HZ
2955 config SYS_SUPPORTS_1000HZ
2958 config SYS_SUPPORTS_1024HZ
2961 config SYS_SUPPORTS_ARBIT_HZ
2963 default y if !SYS_SUPPORTS_24HZ && \
2964 !SYS_SUPPORTS_48HZ && \
2965 !SYS_SUPPORTS_100HZ && \
2966 !SYS_SUPPORTS_128HZ && \
2967 !SYS_SUPPORTS_250HZ && \
2968 !SYS_SUPPORTS_256HZ && \
2969 !SYS_SUPPORTS_1000HZ && \
2970 !SYS_SUPPORTS_1024HZ
2976 default 100 if HZ_100
2977 default 128 if HZ_128
2978 default 250 if HZ_250
2979 default 256 if HZ_256
2980 default 1000 if HZ_1000
2981 default 1024 if HZ_1024
2984 def_bool HIGH_RES_TIMERS
2987 bool "Kexec system call"
2990 kexec is a system call that implements the ability to shutdown your
2991 current kernel, and to start another kernel. It is like a reboot
2992 but it is independent of the system firmware. And like a reboot
2993 you can start any kernel with it, not just Linux.
2995 The name comes from the similarity to the exec system call.
2997 It is an ongoing process to be certain the hardware in a machine
2998 is properly shutdown, so do not be surprised if this code does not
2999 initially work for you. As of this writing the exact hardware
3000 interface is strongly in flux, so no good recommendation can be
3004 bool "Kernel crash dumps"
3006 Generate crash dump after being started by kexec.
3007 This should be normally only set in special crash dump kernels
3008 which are loaded in the main kernel with kexec-tools into
3009 a specially reserved region and then later executed after
3010 a crash by kdump/kexec. The crash dump kernel must be compiled
3011 to a memory address not used by the main kernel or firmware using
3014 config PHYSICAL_START
3015 hex "Physical address where the kernel is loaded"
3016 default "0xffffffff84000000"
3017 depends on CRASH_DUMP
3019 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3020 If you plan to use kernel for capturing the crash dump change
3021 this value to start of the reserved region (the "X" value as
3022 specified in the "crashkernel=YM@XM" command line boot parameter
3023 passed to the panic-ed kernel).
3026 bool "Enable seccomp to safely compute untrusted bytecode"
3030 This kernel feature is useful for number crunching applications
3031 that may need to compute untrusted bytecode during their
3032 execution. By using pipes or other transports made available to
3033 the process as file descriptors supporting the read/write
3034 syscalls, it's possible to isolate those applications in
3035 their own address space using seccomp. Once seccomp is
3036 enabled via /proc/<pid>/seccomp, it cannot be disabled
3037 and the task is only allowed to execute a few safe syscalls
3038 defined by each seccomp mode.
3040 If unsure, say Y. Only embedded should say N here.
3042 config MIPS_O32_FP64_SUPPORT
3043 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3044 depends on 32BIT || MIPS32_O32
3046 When this is enabled, the kernel will support use of 64-bit floating
3047 point registers with binaries using the O32 ABI along with the
3048 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3049 32-bit MIPS systems this support is at the cost of increasing the
3050 size and complexity of the compiled FPU emulator. Thus if you are
3051 running a MIPS32 system and know that none of your userland binaries
3052 will require 64-bit floating point, you may wish to reduce the size
3053 of your kernel & potentially improve FP emulation performance by
3056 Although binutils currently supports use of this flag the details
3057 concerning its effect upon the O32 ABI in userland are still being
3058 worked on. In order to avoid userland becoming dependant upon current
3059 behaviour before the details have been finalised, this option should
3060 be considered experimental and only enabled by those working upon
3068 select OF_EARLY_FLATTREE
3078 prompt "Kernel appended dtb support" if USE_OF
3079 default MIPS_NO_APPENDED_DTB
3081 config MIPS_NO_APPENDED_DTB
3084 Do not enable appended dtb support.
3086 config MIPS_ELF_APPENDED_DTB
3089 With this option, the boot code will look for a device tree binary
3090 DTB) included in the vmlinux ELF section .appended_dtb. By default
3091 it is empty and the DTB can be appended using binutils command
3094 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3096 This is meant as a backward compatiblity convenience for those
3097 systems with a bootloader that can't be upgraded to accommodate
3098 the documented boot protocol using a device tree.
3100 config MIPS_RAW_APPENDED_DTB
3101 bool "vmlinux.bin or vmlinuz.bin"
3103 With this option, the boot code will look for a device tree binary
3104 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3105 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3107 This is meant as a backward compatibility convenience for those
3108 systems with a bootloader that can't be upgraded to accommodate
3109 the documented boot protocol using a device tree.
3111 Beware that there is very little in terms of protection against
3112 this option being confused by leftover garbage in memory that might
3113 look like a DTB header after a reboot if no actual DTB is appended
3114 to vmlinux.bin. Do not leave this option active in a production kernel
3115 if you don't intend to always append a DTB.
3119 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3120 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3121 !MACH_LOONGSON64 && !MIPS_MALTA && \
3123 default MIPS_CMDLINE_FROM_BOOTLOADER
3125 config MIPS_CMDLINE_FROM_DTB
3127 bool "Dtb kernel arguments if available"
3129 config MIPS_CMDLINE_DTB_EXTEND
3131 bool "Extend dtb kernel arguments with bootloader arguments"
3133 config MIPS_CMDLINE_FROM_BOOTLOADER
3134 bool "Bootloader kernel arguments if available"
3136 config MIPS_CMDLINE_BUILTIN_EXTEND
3137 depends on CMDLINE_BOOL
3138 bool "Extend builtin kernel arguments with bootloader arguments"
3143 config LOCKDEP_SUPPORT
3147 config STACKTRACE_SUPPORT
3151 config PGTABLE_LEVELS
3153 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3154 default 3 if 64BIT && !PAGE_SIZE_64KB
3157 config MIPS_AUTO_PFN_OFFSET
3160 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3162 config PCI_DRIVERS_GENERIC
3163 select PCI_DOMAINS_GENERIC if PCI
3166 config PCI_DRIVERS_LEGACY
3167 def_bool !PCI_DRIVERS_GENERIC
3168 select NO_GENERIC_PCI_IOPORT_MAP
3169 select PCI_DOMAINS if PCI
3172 # ISA support is now enabled via select. Too many systems still have the one
3173 # or other ISA chip on the board that users don't know about so don't expect
3174 # users to choose the right thing ...
3180 bool "TURBOchannel support"
3181 depends on MACH_DECSTATION
3183 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3184 processors. TURBOchannel programming specifications are available
3186 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3188 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3189 Linux driver support status is documented at:
3190 <http://www.linux-mips.org/wiki/DECstation>
3196 config ARCH_MMAP_RND_BITS_MIN
3200 config ARCH_MMAP_RND_BITS_MAX
3204 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3207 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3214 select MIPS_EXTERNAL_TIMER
3227 config MIPS32_COMPAT
3233 config SYSVIPC_COMPAT
3237 bool "Kernel support for o32 binaries"
3239 select ARCH_WANT_OLD_COMPAT_IPC
3241 select MIPS32_COMPAT
3242 select SYSVIPC_COMPAT if SYSVIPC
3244 Select this option if you want to run o32 binaries. These are pure
3245 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3246 existing binaries are in this format.
3251 bool "Kernel support for n32 binaries"
3253 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3255 select MIPS32_COMPAT
3256 select SYSVIPC_COMPAT if SYSVIPC
3258 Select this option if you want to run n32 binaries. These are
3259 64-bit binaries using 32-bit quantities for addressing and certain
3260 data that would normally be 64-bit. They are used in special
3267 default y if MIPS32_O32 || MIPS32_N32
3270 menu "Power management options"
3272 config ARCH_HIBERNATION_POSSIBLE
3274 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3276 config ARCH_SUSPEND_POSSIBLE
3278 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3280 source "kernel/power/Kconfig"
3284 config MIPS_EXTERNAL_TIMER
3287 menu "CPU Power Management"
3289 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3290 source "drivers/cpufreq/Kconfig"
3293 source "drivers/cpuidle/Kconfig"
3297 source "drivers/firmware/Kconfig"
3299 source "arch/mips/kvm/Kconfig"
3301 source "arch/mips/vdso/Kconfig"