1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_HAS_FORTIFY_SOURCE
9 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11 select ARCH_HAS_UBSAN_SANITIZE_ALL
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
18 select ARCH_WANT_IPC_PARSE_VERSION
19 select BUILDTIME_TABLE_SORT
20 select CLONE_BACKWARDS
21 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
22 select CPU_PM if CPU_IDLE
23 select GENERIC_ATOMIC64 if !64BIT
24 select GENERIC_CLOCKEVENTS
25 select GENERIC_CMOS_UPDATE
26 select GENERIC_CPU_AUTOPROBE
27 select GENERIC_GETTIMEOFDAY
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_ISA_DMA if EISA
32 select GENERIC_LIB_ASHLDI3
33 select GENERIC_LIB_ASHRDI3
34 select GENERIC_LIB_CMPDI2
35 select GENERIC_LIB_LSHRDI3
36 select GENERIC_LIB_UCMPDI2
37 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_TIME_VSYSCALL
40 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
41 select HANDLE_DOMAIN_IRQ
42 select HAVE_ARCH_COMPILER_H
43 select HAVE_ARCH_JUMP_LABEL
45 select HAVE_ARCH_MMAP_RND_BITS if MMU
46 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
47 select HAVE_ARCH_SECCOMP_FILTER
48 select HAVE_ARCH_TRACEHOOK
49 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
50 select HAVE_ASM_MODVERSIONS
51 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
52 select HAVE_CONTEXT_TRACKING
54 select HAVE_C_RECORDMCOUNT
55 select HAVE_DEBUG_KMEMLEAK
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_DMA_CONTIGUOUS
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
60 select HAVE_EXIT_THREAD
62 select HAVE_FTRACE_MCOUNT_RECORD
63 select HAVE_FUNCTION_GRAPH_TRACER
64 select HAVE_FUNCTION_TRACER
65 select HAVE_GCC_PLUGINS
66 select HAVE_GENERIC_VDSO
68 select HAVE_IOREMAP_PROT
69 select HAVE_IRQ_EXIT_ON_IRQ_STACK
70 select HAVE_IRQ_TIME_ACCOUNTING
72 select HAVE_KRETPROBES
73 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
74 select HAVE_MOD_ARCH_SPECIFIC
77 select HAVE_PERF_EVENTS
78 select HAVE_REGS_AND_STACK_ACCESS_API
80 select HAVE_SPARSE_SYSCALL_NR
81 select HAVE_STACKPROTECTOR
82 select HAVE_SYSCALL_TRACEPOINTS
83 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
84 select IRQ_FORCED_THREADING
86 select MODULES_USE_ELF_REL if MODULES
87 select MODULES_USE_ELF_RELA if MODULES && 64BIT
88 select PERF_USE_VMALLOC
89 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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
373 select ARCH_MAY_HAVE_PC_FDC
376 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
377 select GENERIC_ISA_DMA
378 select HAVE_PCSPKR_PLATFORM
383 select SYS_HAS_CPU_R4X00
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_64BIT_KERNEL
386 select SYS_SUPPORTS_100HZ
388 This a family of machines based on the MIPS R4030 chipset which was
389 used by several vendors to build RISC/os and Windows NT workstations.
390 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
391 Olivetti M700-10 workstations.
394 bool "Ingenic SoC based machines"
395 select SYS_SUPPORTS_32BIT_KERNEL
396 select SYS_SUPPORTS_LITTLE_ENDIAN
397 select SYS_SUPPORTS_ZBOOT_UART16550
398 select CPU_SUPPORTS_HUGEPAGES
399 select DMA_NONCOHERENT
404 select GENERIC_IRQ_CHIP
405 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
409 bool "Lantiq based platforms"
410 select DMA_NONCOHERENT
414 select SYS_HAS_CPU_MIPS32_R1
415 select SYS_HAS_CPU_MIPS32_R2
416 select SYS_SUPPORTS_BIG_ENDIAN
417 select SYS_SUPPORTS_32BIT_KERNEL
418 select SYS_SUPPORTS_MIPS16
419 select SYS_SUPPORTS_MULTITHREADING
420 select SYS_SUPPORTS_VPE_LOADER
421 select SYS_HAS_EARLY_PRINTK
426 select HAVE_LEGACY_CLK
429 select PINCTRL_LANTIQ
430 select ARCH_HAS_RESET_CONTROLLER
431 select RESET_CONTROLLER
433 config MACH_LOONGSON32
434 bool "Loongson 32-bit family of machines"
435 select SYS_SUPPORTS_ZBOOT
437 This enables support for the Loongson-1 family of machines.
439 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
440 the Institute of Computing Technology (ICT), Chinese Academy of
443 config MACH_LOONGSON2EF
444 bool "Loongson-2E/F family of machines"
445 select SYS_SUPPORTS_ZBOOT
447 This enables the support of early Loongson-2E/F family of machines.
449 config MACH_LOONGSON64
450 bool "Loongson 64-bit family of machines"
451 select ARCH_SPARSEMEM_ENABLE
452 select ARCH_MIGHT_HAVE_PC_PARPORT
453 select ARCH_MIGHT_HAVE_PC_SERIO
454 select GENERIC_ISA_DMA_SUPPORT_BROKEN
464 select NO_EXCEPT_FILL
465 select NR_CPUS_DEFAULT_64
466 select USE_GENERIC_EARLY_PRINTK_8250
467 select PCI_DRIVERS_GENERIC
468 select SYS_HAS_CPU_LOONGSON64
469 select SYS_HAS_EARLY_PRINTK
470 select SYS_SUPPORTS_SMP
471 select SYS_SUPPORTS_HOTPLUG_CPU
472 select SYS_SUPPORTS_NUMA
473 select SYS_SUPPORTS_64BIT_KERNEL
474 select SYS_SUPPORTS_HIGHMEM
475 select SYS_SUPPORTS_LITTLE_ENDIAN
476 select SYS_SUPPORTS_ZBOOT
482 select PCI_HOST_GENERIC
484 This enables the support of Loongson-2/3 family of machines.
486 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
487 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
488 and Loongson-2F which will be removed), developed by the Institute
489 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
491 config MACH_PISTACHIO
492 bool "IMG Pistachio SoC based boards"
496 select CLKSRC_MIPS_GIC
499 select DMA_NONCOHERENT
503 select MIPS_CPU_SCACHE
507 select SYS_HAS_CPU_MIPS32_R2
508 select SYS_SUPPORTS_32BIT_KERNEL
509 select SYS_SUPPORTS_LITTLE_ENDIAN
510 select SYS_SUPPORTS_MIPS_CPS
511 select SYS_SUPPORTS_MULTITHREADING
512 select SYS_SUPPORTS_RELOCATABLE
513 select SYS_SUPPORTS_ZBOOT
514 select SYS_HAS_EARLY_PRINTK
515 select USE_GENERIC_EARLY_PRINTK_8250
518 This enables support for the IMG Pistachio SoC platform.
521 bool "MIPS Malta board"
522 select ARCH_MAY_HAVE_PC_FDC
523 select ARCH_MIGHT_HAVE_PC_PARPORT
524 select ARCH_MIGHT_HAVE_PC_SERIO
529 select CLKSRC_MIPS_GIC
532 select DMA_MAYBE_COHERENT
533 select GENERIC_ISA_DMA
534 select HAVE_PCSPKR_PLATFORM
540 select MIPS_CPU_SCACHE
542 select MIPS_L1_CACHE_SHIFT_6
544 select PCI_GT64XXX_PCI0
547 select SYS_HAS_CPU_MIPS32_R1
548 select SYS_HAS_CPU_MIPS32_R2
549 select SYS_HAS_CPU_MIPS32_R3_5
550 select SYS_HAS_CPU_MIPS32_R5
551 select SYS_HAS_CPU_MIPS32_R6
552 select SYS_HAS_CPU_MIPS64_R1
553 select SYS_HAS_CPU_MIPS64_R2
554 select SYS_HAS_CPU_MIPS64_R6
555 select SYS_HAS_CPU_NEVADA
556 select SYS_HAS_CPU_RM7000
557 select SYS_SUPPORTS_32BIT_KERNEL
558 select SYS_SUPPORTS_64BIT_KERNEL
559 select SYS_SUPPORTS_BIG_ENDIAN
560 select SYS_SUPPORTS_HIGHMEM
561 select SYS_SUPPORTS_LITTLE_ENDIAN
562 select SYS_SUPPORTS_MICROMIPS
563 select SYS_SUPPORTS_MIPS16
564 select SYS_SUPPORTS_MIPS_CMP
565 select SYS_SUPPORTS_MIPS_CPS
566 select SYS_SUPPORTS_MULTITHREADING
567 select SYS_SUPPORTS_RELOCATABLE
568 select SYS_SUPPORTS_SMARTMIPS
569 select SYS_SUPPORTS_VPE_LOADER
570 select SYS_SUPPORTS_ZBOOT
572 select ZONE_DMA32 if 64BIT
574 This enables support for the MIPS Technologies Malta evaluation
578 bool "Microchip PIC32 Family"
580 This enables support for the Microchip PIC32 family of platforms.
582 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
586 bool "NEC VR4100 series based machines"
589 select SYS_HAS_CPU_VR41XX
590 select SYS_SUPPORTS_MIPS16
594 bool "NXP STB220 board"
597 Support for NXP Semiconductors STB220 Development Board.
604 Support for NXP Semiconductors STB225 Development Board.
607 bool "Ralink based machines"
611 select DMA_NONCOHERENT
614 select SYS_HAS_CPU_MIPS32_R1
615 select SYS_HAS_CPU_MIPS32_R2
616 select SYS_SUPPORTS_32BIT_KERNEL
617 select SYS_SUPPORTS_LITTLE_ENDIAN
618 select SYS_SUPPORTS_MIPS16
619 select SYS_HAS_EARLY_PRINTK
621 select ARCH_HAS_RESET_CONTROLLER
622 select RESET_CONTROLLER
625 bool "SGI IP22 (Indy/Indigo2)"
630 select ARCH_MIGHT_HAVE_PC_SERIO
634 select DEFAULT_SGI_PARTITION
635 select DMA_NONCOHERENT
639 select IP22_CPU_SCACHE
641 select GENERIC_ISA_DMA_SUPPORT_BROKEN
643 select SGI_HAS_INDYDOG
649 select SYS_HAS_CPU_R4X00
650 select SYS_HAS_CPU_R5000
651 select SYS_HAS_EARLY_PRINTK
652 select SYS_SUPPORTS_32BIT_KERNEL
653 select SYS_SUPPORTS_64BIT_KERNEL
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select MIPS_L1_CACHE_SHIFT_7
657 This are the SGI Indy, Challenge S and Indigo2, as well as certain
658 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
659 that runs on these, say Y here.
662 bool "SGI IP27 (Origin200/2000)"
663 select ARCH_HAS_PHYS_TO_DMA
664 select ARCH_SPARSEMEM_ENABLE
667 select ARC_CMDLINE_ONLY
669 select DEFAULT_SGI_PARTITION
670 select SYS_HAS_EARLY_PRINTK
673 select IRQ_DOMAIN_HIERARCHY
674 select NR_CPUS_DEFAULT_64
675 select PCI_DRIVERS_GENERIC
676 select PCI_XTALK_BRIDGE
677 select SYS_HAS_CPU_R10000
678 select SYS_SUPPORTS_64BIT_KERNEL
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_NUMA
681 select SYS_SUPPORTS_SMP
682 select MIPS_L1_CACHE_SHIFT_7
685 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
686 workstations. To compile a Linux kernel that runs on these, say Y
690 bool "SGI IP28 (Indigo2 R10k)"
695 select ARCH_MIGHT_HAVE_PC_SERIO
699 select DEFAULT_SGI_PARTITION
700 select DMA_NONCOHERENT
701 select GENERIC_ISA_DMA_SUPPORT_BROKEN
707 select SGI_HAS_INDYDOG
713 select SYS_HAS_CPU_R10000
714 select SYS_HAS_EARLY_PRINTK
715 select SYS_SUPPORTS_64BIT_KERNEL
716 select SYS_SUPPORTS_BIG_ENDIAN
717 select MIPS_L1_CACHE_SHIFT_7
719 This is the SGI Indigo2 with R10000 processor. To compile a Linux
720 kernel that runs on these, say Y here.
723 bool "SGI IP30 (Octane/Octane2)"
724 select ARCH_HAS_PHYS_TO_DMA
730 select SYNC_R4K if SMP
734 select IRQ_DOMAIN_HIERARCHY
735 select NR_CPUS_DEFAULT_2
736 select PCI_DRIVERS_GENERIC
737 select PCI_XTALK_BRIDGE
738 select SYS_HAS_EARLY_PRINTK
739 select SYS_HAS_CPU_R10000
740 select SYS_SUPPORTS_64BIT_KERNEL
741 select SYS_SUPPORTS_BIG_ENDIAN
742 select SYS_SUPPORTS_SMP
743 select MIPS_L1_CACHE_SHIFT_7
746 These are the SGI Octane and Octane2 graphics workstations. To
747 compile a Linux kernel that runs on these, say Y here.
753 select ARCH_HAS_PHYS_TO_DMA
759 select DMA_NONCOHERENT
762 select R5000_CPU_SCACHE
763 select RM7000_CPU_SCACHE
764 select SYS_HAS_CPU_R5000
765 select SYS_HAS_CPU_R10000 if BROKEN
766 select SYS_HAS_CPU_RM7000
767 select SYS_HAS_CPU_NEVADA
768 select SYS_SUPPORTS_64BIT_KERNEL
769 select SYS_SUPPORTS_BIG_ENDIAN
771 If you want this kernel to run on SGI O2 workstation, say Y here.
774 bool "Sibyte BCM91120C-CRhine"
776 select SIBYTE_BCM1120
778 select SYS_HAS_CPU_SB1
779 select SYS_SUPPORTS_BIG_ENDIAN
780 select SYS_SUPPORTS_LITTLE_ENDIAN
783 bool "Sibyte BCM91120x-Carmel"
785 select SIBYTE_BCM1120
787 select SYS_HAS_CPU_SB1
788 select SYS_SUPPORTS_BIG_ENDIAN
789 select SYS_SUPPORTS_LITTLE_ENDIAN
792 bool "Sibyte BCM91125C-CRhone"
794 select SIBYTE_BCM1125
796 select SYS_HAS_CPU_SB1
797 select SYS_SUPPORTS_BIG_ENDIAN
798 select SYS_SUPPORTS_HIGHMEM
799 select SYS_SUPPORTS_LITTLE_ENDIAN
802 bool "Sibyte BCM91125E-Rhone"
804 select SIBYTE_BCM1125H
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_LITTLE_ENDIAN
811 bool "Sibyte BCM91250A-SWARM"
813 select HAVE_PATA_PLATFORM
816 select SYS_HAS_CPU_SB1
817 select SYS_SUPPORTS_BIG_ENDIAN
818 select SYS_SUPPORTS_HIGHMEM
819 select SYS_SUPPORTS_LITTLE_ENDIAN
820 select ZONE_DMA32 if 64BIT
821 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
823 config SIBYTE_LITTLESUR
824 bool "Sibyte BCM91250C2-LittleSur"
826 select HAVE_PATA_PLATFORM
829 select SYS_HAS_CPU_SB1
830 select SYS_SUPPORTS_BIG_ENDIAN
831 select SYS_SUPPORTS_HIGHMEM
832 select SYS_SUPPORTS_LITTLE_ENDIAN
833 select ZONE_DMA32 if 64BIT
835 config SIBYTE_SENTOSA
836 bool "Sibyte BCM91250E-Sentosa"
840 select SYS_HAS_CPU_SB1
841 select SYS_SUPPORTS_BIG_ENDIAN
842 select SYS_SUPPORTS_LITTLE_ENDIAN
843 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
846 bool "Sibyte BCM91480B-BigSur"
848 select NR_CPUS_DEFAULT_4
849 select SIBYTE_BCM1x80
851 select SYS_HAS_CPU_SB1
852 select SYS_SUPPORTS_BIG_ENDIAN
853 select SYS_SUPPORTS_HIGHMEM
854 select SYS_SUPPORTS_LITTLE_ENDIAN
855 select ZONE_DMA32 if 64BIT
856 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
859 bool "SNI RM200/300/400"
862 select FW_ARC if CPU_LITTLE_ENDIAN
863 select FW_ARC32 if CPU_LITTLE_ENDIAN
864 select FW_SNIPROM if CPU_BIG_ENDIAN
865 select ARCH_MAY_HAVE_PC_FDC
866 select ARCH_MIGHT_HAVE_PC_PARPORT
867 select ARCH_MIGHT_HAVE_PC_SERIO
871 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
872 select DMA_NONCOHERENT
873 select GENERIC_ISA_DMA
875 select HAVE_PCSPKR_PLATFORM
881 select MIPS_L1_CACHE_SHIFT_6
882 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
883 select SYS_HAS_CPU_R4X00
884 select SYS_HAS_CPU_R5000
885 select SYS_HAS_CPU_R10000
886 select R5000_CPU_SCACHE
887 select SYS_HAS_EARLY_PRINTK
888 select SYS_SUPPORTS_32BIT_KERNEL
889 select SYS_SUPPORTS_64BIT_KERNEL
890 select SYS_SUPPORTS_BIG_ENDIAN
891 select SYS_SUPPORTS_HIGHMEM
892 select SYS_SUPPORTS_LITTLE_ENDIAN
894 The SNI RM200/300/400 are MIPS-based machines manufactured by
895 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
896 Technology and now in turn merged with Fujitsu. Say Y here to
897 support this machine type.
900 bool "Toshiba TX39 series based machines"
903 bool "Toshiba TX49 series based machines"
905 config MIKROTIK_RB532
906 bool "Mikrotik RB532 boards"
909 select DMA_NONCOHERENT
912 select SYS_HAS_CPU_MIPS32_R1
913 select SYS_SUPPORTS_32BIT_KERNEL
914 select SYS_SUPPORTS_LITTLE_ENDIAN
918 select MIPS_L1_CACHE_SHIFT_4
920 Support the Mikrotik(tm) RouterBoard 532 series,
921 based on the IDT RC32434 SoC.
923 config CAVIUM_OCTEON_SOC
924 bool "Cavium Networks Octeon SoC based boards"
926 select ARCH_HAS_PHYS_TO_DMA
928 select PHYS_ADDR_T_64BIT
929 select SYS_SUPPORTS_64BIT_KERNEL
930 select SYS_SUPPORTS_BIG_ENDIAN
932 select EDAC_ATOMIC_SCRUB
933 select SYS_SUPPORTS_LITTLE_ENDIAN
934 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
935 select SYS_HAS_EARLY_PRINTK
936 select SYS_HAS_CPU_CAVIUM_OCTEON
938 select HAVE_PLAT_DELAY
939 select HAVE_PLAT_FW_INIT_CMDLINE
940 select HAVE_PLAT_MEMCPY
945 select ARCH_SPARSEMEM_ENABLE
946 select SYS_SUPPORTS_SMP
947 select NR_CPUS_DEFAULT_64
948 select MIPS_NR_CPU_NR_MAP_1024
950 select MTD_COMPLEX_MAPPINGS
952 select SYS_SUPPORTS_RELOCATABLE
954 This option supports all of the Octeon reference boards from Cavium
955 Networks. It builds a kernel that dynamically determines the Octeon
956 CPU type and supports all known board reference implementations.
957 Some of the supported boards are:
964 Say Y here for most Octeon reference boards.
967 bool "Netlogic XLR/XLS based systems"
970 select SYS_HAS_CPU_XLR
971 select SYS_SUPPORTS_SMP
974 select SYS_SUPPORTS_32BIT_KERNEL
975 select SYS_SUPPORTS_64BIT_KERNEL
976 select PHYS_ADDR_T_64BIT
977 select SYS_SUPPORTS_BIG_ENDIAN
978 select SYS_SUPPORTS_HIGHMEM
979 select NR_CPUS_DEFAULT_32
983 select ZONE_DMA32 if 64BIT
985 select SYS_HAS_EARLY_PRINTK
986 select SYS_SUPPORTS_ZBOOT
987 select SYS_SUPPORTS_ZBOOT_UART16550
989 Support for systems based on Netlogic XLR and XLS processors.
990 Say Y here if you have a XLR or XLS based board.
993 bool "Netlogic XLP based systems"
996 select SYS_HAS_CPU_XLP
997 select SYS_SUPPORTS_SMP
999 select SYS_SUPPORTS_32BIT_KERNEL
1000 select SYS_SUPPORTS_64BIT_KERNEL
1001 select PHYS_ADDR_T_64BIT
1003 select SYS_SUPPORTS_BIG_ENDIAN
1004 select SYS_SUPPORTS_LITTLE_ENDIAN
1005 select SYS_SUPPORTS_HIGHMEM
1006 select NR_CPUS_DEFAULT_32
1010 select ZONE_DMA32 if 64BIT
1012 select SYS_HAS_EARLY_PRINTK
1014 select SYS_SUPPORTS_ZBOOT
1015 select SYS_SUPPORTS_ZBOOT_UART16550
1017 This board is based on Netlogic XLP Processor.
1018 Say Y here if you have a XLP based board.
1022 source "arch/mips/alchemy/Kconfig"
1023 source "arch/mips/ath25/Kconfig"
1024 source "arch/mips/ath79/Kconfig"
1025 source "arch/mips/bcm47xx/Kconfig"
1026 source "arch/mips/bcm63xx/Kconfig"
1027 source "arch/mips/bmips/Kconfig"
1028 source "arch/mips/generic/Kconfig"
1029 source "arch/mips/jazz/Kconfig"
1030 source "arch/mips/jz4740/Kconfig"
1031 source "arch/mips/lantiq/Kconfig"
1032 source "arch/mips/pic32/Kconfig"
1033 source "arch/mips/pistachio/Kconfig"
1034 source "arch/mips/ralink/Kconfig"
1035 source "arch/mips/sgi-ip27/Kconfig"
1036 source "arch/mips/sibyte/Kconfig"
1037 source "arch/mips/txx9/Kconfig"
1038 source "arch/mips/vr41xx/Kconfig"
1039 source "arch/mips/cavium-octeon/Kconfig"
1040 source "arch/mips/loongson2ef/Kconfig"
1041 source "arch/mips/loongson32/Kconfig"
1042 source "arch/mips/loongson64/Kconfig"
1043 source "arch/mips/netlogic/Kconfig"
1047 config GENERIC_HWEIGHT
1051 config GENERIC_CALIBRATE_DELAY
1055 config SCHED_OMIT_FRAME_POINTER
1060 # Select some configuration options automatically based on user selections.
1065 config ARCH_MAY_HAVE_PC_FDC
1096 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1102 config MIPS_CLOCK_VSYSCALL
1103 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1112 config ARCH_SUPPORTS_UPROBES
1115 config DMA_MAYBE_COHERENT
1116 select ARCH_HAS_DMA_COHERENCE_H
1117 select DMA_NONCOHERENT
1120 config DMA_PERDEV_COHERENT
1122 select ARCH_HAS_SETUP_DMA_OPS
1123 select DMA_NONCOHERENT
1125 config DMA_NONCOHERENT
1128 # MIPS allows mixing "slightly different" Cacheability and Coherency
1129 # Attribute bits. It is believed that the uncached access through
1130 # KSEG1 and the implementation specific "uncached accelerated" used
1131 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1132 # significant advantages.
1134 select ARCH_HAS_DMA_WRITE_COMBINE
1135 select ARCH_HAS_DMA_PREP_COHERENT
1136 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1137 select ARCH_HAS_DMA_SET_UNCACHED
1138 select DMA_NONCOHERENT_MMAP
1139 select DMA_NONCOHERENT_CACHE_SYNC
1140 select NEED_DMA_MAP_STATE
1142 config SYS_HAS_EARLY_PRINTK
1145 config SYS_SUPPORTS_HOTPLUG_CPU
1148 config MIPS_BONITO64
1157 config NO_IOPORT_MAP
1161 def_bool CPU_NO_LOAD_STORE_LR
1163 config GENERIC_ISA_DMA
1165 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1168 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1170 select GENERIC_ISA_DMA
1172 config HAVE_PLAT_DELAY
1175 config HAVE_PLAT_FW_INIT_CMDLINE
1178 config HAVE_PLAT_MEMCPY
1184 config HOLES_IN_ZONE
1187 config SYS_SUPPORTS_RELOCATABLE
1190 Selected if the platform supports relocating the kernel.
1191 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1192 to allow access to command line and entropy sources.
1194 config MIPS_CBPF_JIT
1196 depends on BPF_JIT && HAVE_CBPF_JIT
1198 config MIPS_EBPF_JIT
1200 depends on BPF_JIT && HAVE_EBPF_JIT
1204 # Endianness selection. Sufficiently obscure so many users don't know what to
1205 # answer,so we try hard to limit the available choices. Also the use of a
1206 # choice statement should be more obvious to the user.
1209 prompt "Endianness selection"
1211 Some MIPS machines can be configured for either little or big endian
1212 byte order. These modes require different kernels and a different
1213 Linux distribution. In general there is one preferred byteorder for a
1214 particular system but some systems are just as commonly used in the
1215 one or the other endianness.
1217 config CPU_BIG_ENDIAN
1219 depends on SYS_SUPPORTS_BIG_ENDIAN
1221 config CPU_LITTLE_ENDIAN
1222 bool "Little endian"
1223 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1230 config SYS_SUPPORTS_APM_EMULATION
1233 config SYS_SUPPORTS_BIG_ENDIAN
1236 config SYS_SUPPORTS_LITTLE_ENDIAN
1239 config SYS_SUPPORTS_HUGETLBFS
1241 depends on CPU_SUPPORTS_HUGEPAGES
1244 config MIPS_HUGE_TLB_SUPPORT
1245 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1262 config PCI_GT64XXX_PCI0
1265 config PCI_XTALK_BRIDGE
1268 config NO_EXCEPT_FILL
1276 select DMA_NONCOHERENT
1277 select SYS_HAS_CPU_MIPS32_R2
1278 select SYS_SUPPORTS_32BIT_KERNEL
1279 select SYS_SUPPORTS_LITTLE_ENDIAN
1280 select SYS_SUPPORTS_BIG_ENDIAN
1281 select SYS_SUPPORTS_MIPS16
1282 select CPU_MIPSR2_IRQ_VI
1291 config SWAP_IO_SPACE
1294 config SGI_HAS_INDYDOG
1306 config SGI_HAS_ZILOG
1309 config SGI_HAS_I8042
1312 config DEFAULT_SGI_PARTITION
1324 config MIPS_L1_CACHE_SHIFT_4
1327 config MIPS_L1_CACHE_SHIFT_5
1330 config MIPS_L1_CACHE_SHIFT_6
1333 config MIPS_L1_CACHE_SHIFT_7
1336 config MIPS_L1_CACHE_SHIFT
1338 default "7" if MIPS_L1_CACHE_SHIFT_7
1339 default "6" if MIPS_L1_CACHE_SHIFT_6
1340 default "5" if MIPS_L1_CACHE_SHIFT_5
1341 default "4" if MIPS_L1_CACHE_SHIFT_4
1344 config ARC_CMDLINE_ONLY
1348 bool "ARC console support"
1349 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1363 menu "CPU selection"
1369 config CPU_LOONGSON64
1370 bool "Loongson 64-bit CPU"
1371 depends on SYS_HAS_CPU_LOONGSON64
1372 select ARCH_HAS_PHYS_TO_DMA
1374 select CPU_HAS_PREFETCH
1375 select CPU_SUPPORTS_64BIT_KERNEL
1376 select CPU_SUPPORTS_HIGHMEM
1377 select CPU_SUPPORTS_HUGEPAGES
1378 select CPU_SUPPORTS_MSA
1379 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1380 select CPU_MIPSR2_IRQ_VI
1381 select WEAK_ORDERING
1382 select WEAK_REORDERING_BEYOND_LLSC
1383 select MIPS_ASID_BITS_VARIABLE
1384 select MIPS_PGD_C0_CONTEXT
1385 select MIPS_L1_CACHE_SHIFT_6
1390 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1391 cores implements the MIPS64R2 instruction set with many extensions,
1392 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1393 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1394 Loongson-2E/2F is not covered here and will be removed in future.
1396 config LOONGSON3_ENHANCEMENT
1397 bool "New Loongson-3 CPU Enhancements"
1399 depends on CPU_LOONGSON64
1401 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1402 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1403 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1404 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1405 Fast TLB refill support, etc.
1407 This option enable those enhancements which are not probed at run
1408 time. If you want a generic kernel to run on all Loongson 3 machines,
1409 please say 'N' here. If you want a high-performance kernel to run on
1410 new Loongson-3 machines only, please say 'Y' here.
1412 config CPU_LOONGSON3_WORKAROUNDS
1413 bool "Old Loongson-3 LLSC Workarounds"
1415 depends on CPU_LOONGSON64
1417 Loongson-3 processors have the llsc issues which require workarounds.
1418 Without workarounds the system may hang unexpectedly.
1420 Newer Loongson-3 will fix these issues and no workarounds are needed.
1421 The workarounds have no significant side effect on them but may
1422 decrease the performance of the system so this option should be
1423 disabled unless the kernel is intended to be run on old systems.
1425 If unsure, please say Y.
1427 config CPU_LOONGSON3_CPUCFG_EMULATION
1428 bool "Emulate the CPUCFG instruction on older Loongson cores"
1430 depends on CPU_LOONGSON64
1432 Loongson-3A R4 and newer have the CPUCFG instruction available for
1433 userland to query CPU capabilities, much like CPUID on x86. This
1434 option provides emulation of the instruction on older Loongson
1435 cores, back to Loongson-3A1000.
1437 If unsure, please say Y.
1439 config CPU_LOONGSON2E
1441 depends on SYS_HAS_CPU_LOONGSON2E
1442 select CPU_LOONGSON2EF
1444 The Loongson 2E processor implements the MIPS III instruction set
1445 with many extensions.
1447 It has an internal FPGA northbridge, which is compatible to
1450 config CPU_LOONGSON2F
1452 depends on SYS_HAS_CPU_LOONGSON2F
1453 select CPU_LOONGSON2EF
1456 The Loongson 2F processor implements the MIPS III instruction set
1457 with many extensions.
1459 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1460 have a similar programming interface with FPGA northbridge used in
1463 config CPU_LOONGSON1B
1465 depends on SYS_HAS_CPU_LOONGSON1B
1466 select CPU_LOONGSON32
1467 select LEDS_GPIO_REGISTER
1469 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1470 Release 1 instruction set and part of the MIPS32 Release 2
1473 config CPU_LOONGSON1C
1475 depends on SYS_HAS_CPU_LOONGSON1C
1476 select CPU_LOONGSON32
1477 select LEDS_GPIO_REGISTER
1479 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1480 Release 1 instruction set and part of the MIPS32 Release 2
1483 config CPU_MIPS32_R1
1484 bool "MIPS32 Release 1"
1485 depends on SYS_HAS_CPU_MIPS32_R1
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1490 Choose this option to build a kernel for release 1 or later of the
1491 MIPS32 architecture. Most modern embedded systems with a 32-bit
1492 MIPS processor are based on a MIPS32 processor. If you know the
1493 specific type of processor in your system, choose those that one
1494 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1495 Release 2 of the MIPS32 architecture is available since several
1496 years so chances are you even have a MIPS32 Release 2 processor
1497 in which case you should choose CPU_MIPS32_R2 instead for better
1500 config CPU_MIPS32_R2
1501 bool "MIPS32 Release 2"
1502 depends on SYS_HAS_CPU_MIPS32_R2
1503 select CPU_HAS_PREFETCH
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_MSA
1509 Choose this option to build a kernel for release 2 or later of the
1510 MIPS32 architecture. Most modern embedded systems with a 32-bit
1511 MIPS processor are based on a MIPS32 processor. If you know the
1512 specific type of processor in your system, choose those that one
1513 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1515 config CPU_MIPS32_R5
1516 bool "MIPS32 Release 5"
1517 depends on SYS_HAS_CPU_MIPS32_R5
1518 select CPU_HAS_PREFETCH
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1521 select CPU_SUPPORTS_MSA
1523 select MIPS_O32_FP64_SUPPORT
1525 Choose this option to build a kernel for release 5 or later of the
1526 MIPS32 architecture. New MIPS processors, starting with the Warrior
1527 family, are based on a MIPS32r5 processor. If you own an older
1528 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1530 config CPU_MIPS32_R6
1531 bool "MIPS32 Release 6"
1532 depends on SYS_HAS_CPU_MIPS32_R6
1533 select CPU_HAS_PREFETCH
1534 select CPU_NO_LOAD_STORE_LR
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_HIGHMEM
1537 select CPU_SUPPORTS_MSA
1539 select MIPS_O32_FP64_SUPPORT
1541 Choose this option to build a kernel for release 6 or later of the
1542 MIPS32 architecture. New MIPS processors, starting with the Warrior
1543 family, are based on a MIPS32r6 processor. If you own an older
1544 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1546 config CPU_MIPS64_R1
1547 bool "MIPS64 Release 1"
1548 depends on SYS_HAS_CPU_MIPS64_R1
1549 select CPU_HAS_PREFETCH
1550 select CPU_SUPPORTS_32BIT_KERNEL
1551 select CPU_SUPPORTS_64BIT_KERNEL
1552 select CPU_SUPPORTS_HIGHMEM
1553 select CPU_SUPPORTS_HUGEPAGES
1555 Choose this option to build a kernel for release 1 or later of the
1556 MIPS64 architecture. Many modern embedded systems with a 64-bit
1557 MIPS processor are based on a MIPS64 processor. If you know the
1558 specific type of processor in your system, choose those that one
1559 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1560 Release 2 of the MIPS64 architecture is available since several
1561 years so chances are you even have a MIPS64 Release 2 processor
1562 in which case you should choose CPU_MIPS64_R2 instead for better
1565 config CPU_MIPS64_R2
1566 bool "MIPS64 Release 2"
1567 depends on SYS_HAS_CPU_MIPS64_R2
1568 select CPU_HAS_PREFETCH
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1571 select CPU_SUPPORTS_HIGHMEM
1572 select CPU_SUPPORTS_HUGEPAGES
1573 select CPU_SUPPORTS_MSA
1576 Choose this option to build a kernel for release 2 or later of the
1577 MIPS64 architecture. Many modern embedded systems with a 64-bit
1578 MIPS processor are based on a MIPS64 processor. If you know the
1579 specific type of processor in your system, choose those that one
1580 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1582 config CPU_MIPS64_R5
1583 bool "MIPS64 Release 5"
1584 depends on SYS_HAS_CPU_MIPS64_R5
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
1591 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1594 Choose this option to build a kernel for release 5 or later of the
1595 MIPS64 architecture. This is a intermediate MIPS architecture
1596 release partly implementing release 6 features. Though there is no
1597 any hardware known to be based on this release.
1599 config CPU_MIPS64_R6
1600 bool "MIPS64 Release 6"
1601 depends on SYS_HAS_CPU_MIPS64_R6
1602 select CPU_HAS_PREFETCH
1603 select CPU_NO_LOAD_STORE_LR
1604 select CPU_SUPPORTS_32BIT_KERNEL
1605 select CPU_SUPPORTS_64BIT_KERNEL
1606 select CPU_SUPPORTS_HIGHMEM
1607 select CPU_SUPPORTS_HUGEPAGES
1608 select CPU_SUPPORTS_MSA
1609 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1612 Choose this option to build a kernel for release 6 or later of the
1613 MIPS64 architecture. New MIPS processors, starting with the Warrior
1614 family, are based on a MIPS64r6 processor. If you own an older
1615 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1618 bool "MIPS Warrior P5600"
1619 depends on SYS_HAS_CPU_P5600
1620 select CPU_HAS_PREFETCH
1621 select CPU_SUPPORTS_32BIT_KERNEL
1622 select CPU_SUPPORTS_HIGHMEM
1623 select CPU_SUPPORTS_MSA
1624 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1625 select CPU_SUPPORTS_CPUFREQ
1626 select CPU_MIPSR2_IRQ_VI
1627 select CPU_MIPSR2_IRQ_EI
1629 select MIPS_O32_FP64_SUPPORT
1631 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1632 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1633 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1634 level features like up to six P5600 calculation cores, CM2 with L2
1635 cache, IOCU/IOMMU (though might be unused depending on the system-
1636 specific IP core configuration), GIC, CPC, virtualisation module,
1641 depends on SYS_HAS_CPU_R3000
1644 select CPU_SUPPORTS_32BIT_KERNEL
1645 select CPU_SUPPORTS_HIGHMEM
1647 Please make sure to pick the right CPU type. Linux/MIPS is not
1648 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1649 *not* work on R4000 machines and vice versa. However, since most
1650 of the supported machines have an R4000 (or similar) CPU, R4x00
1651 might be a safe bet. If the resulting kernel does not work,
1652 try to recompile with R3000.
1656 depends on SYS_HAS_CPU_TX39XX
1657 select CPU_SUPPORTS_32BIT_KERNEL
1662 depends on SYS_HAS_CPU_VR41XX
1663 select CPU_SUPPORTS_32BIT_KERNEL
1664 select CPU_SUPPORTS_64BIT_KERNEL
1666 The options selects support for the NEC VR4100 series of processors.
1667 Only choose this option if you have one of these processors as a
1668 kernel built with this option will not run on any other type of
1669 processor or vice versa.
1673 depends on SYS_HAS_CPU_R4X00
1674 select CPU_SUPPORTS_32BIT_KERNEL
1675 select CPU_SUPPORTS_64BIT_KERNEL
1676 select CPU_SUPPORTS_HUGEPAGES
1678 MIPS Technologies R4000-series processors other than 4300, including
1679 the R4000, R4400, R4600, and 4700.
1683 depends on SYS_HAS_CPU_TX49XX
1684 select CPU_HAS_PREFETCH
1685 select CPU_SUPPORTS_32BIT_KERNEL
1686 select CPU_SUPPORTS_64BIT_KERNEL
1687 select CPU_SUPPORTS_HUGEPAGES
1691 depends on SYS_HAS_CPU_R5000
1692 select CPU_SUPPORTS_32BIT_KERNEL
1693 select CPU_SUPPORTS_64BIT_KERNEL
1694 select CPU_SUPPORTS_HUGEPAGES
1696 MIPS Technologies R5000-series processors other than the Nevada.
1700 depends on SYS_HAS_CPU_R5500
1701 select CPU_SUPPORTS_32BIT_KERNEL
1702 select CPU_SUPPORTS_64BIT_KERNEL
1703 select CPU_SUPPORTS_HUGEPAGES
1705 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1710 depends on SYS_HAS_CPU_NEVADA
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select CPU_SUPPORTS_64BIT_KERNEL
1713 select CPU_SUPPORTS_HUGEPAGES
1715 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1719 depends on SYS_HAS_CPU_R10000
1720 select CPU_HAS_PREFETCH
1721 select CPU_SUPPORTS_32BIT_KERNEL
1722 select CPU_SUPPORTS_64BIT_KERNEL
1723 select CPU_SUPPORTS_HIGHMEM
1724 select CPU_SUPPORTS_HUGEPAGES
1726 MIPS Technologies R10000-series processors.
1730 depends on SYS_HAS_CPU_RM7000
1731 select CPU_HAS_PREFETCH
1732 select CPU_SUPPORTS_32BIT_KERNEL
1733 select CPU_SUPPORTS_64BIT_KERNEL
1734 select CPU_SUPPORTS_HIGHMEM
1735 select CPU_SUPPORTS_HUGEPAGES
1739 depends on SYS_HAS_CPU_SB1
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
1746 config CPU_CAVIUM_OCTEON
1747 bool "Cavium Octeon processor"
1748 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1749 select CPU_HAS_PREFETCH
1750 select CPU_SUPPORTS_64BIT_KERNEL
1751 select WEAK_ORDERING
1752 select CPU_SUPPORTS_HIGHMEM
1753 select CPU_SUPPORTS_HUGEPAGES
1754 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1755 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1756 select MIPS_L1_CACHE_SHIFT_7
1759 The Cavium Octeon processor is a highly integrated chip containing
1760 many ethernet hardware widgets for networking tasks. The processor
1761 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1762 Full details can be found at http://www.caviumnetworks.com.
1765 bool "Broadcom BMIPS"
1766 depends on SYS_HAS_CPU_BMIPS
1768 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1769 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1770 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1771 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1772 select CPU_SUPPORTS_32BIT_KERNEL
1773 select DMA_NONCOHERENT
1775 select SWAP_IO_SPACE
1776 select WEAK_ORDERING
1777 select CPU_SUPPORTS_HIGHMEM
1778 select CPU_HAS_PREFETCH
1779 select CPU_SUPPORTS_CPUFREQ
1780 select MIPS_EXTERNAL_TIMER
1782 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1785 bool "Netlogic XLR SoC"
1786 depends on SYS_HAS_CPU_XLR
1787 select CPU_SUPPORTS_32BIT_KERNEL
1788 select CPU_SUPPORTS_64BIT_KERNEL
1789 select CPU_SUPPORTS_HIGHMEM
1790 select CPU_SUPPORTS_HUGEPAGES
1791 select WEAK_ORDERING
1792 select WEAK_REORDERING_BEYOND_LLSC
1794 Netlogic Microsystems XLR/XLS processors.
1797 bool "Netlogic XLP SoC"
1798 depends on SYS_HAS_CPU_XLP
1799 select CPU_SUPPORTS_32BIT_KERNEL
1800 select CPU_SUPPORTS_64BIT_KERNEL
1801 select CPU_SUPPORTS_HIGHMEM
1802 select WEAK_ORDERING
1803 select WEAK_REORDERING_BEYOND_LLSC
1804 select CPU_HAS_PREFETCH
1806 select CPU_SUPPORTS_HUGEPAGES
1807 select MIPS_ASID_BITS_VARIABLE
1809 Netlogic Microsystems XLP processors.
1812 config CPU_MIPS32_3_5_FEATURES
1813 bool "MIPS32 Release 3.5 Features"
1814 depends on SYS_HAS_CPU_MIPS32_R3_5
1815 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1818 Choose this option to build a kernel for release 2 or later of the
1819 MIPS32 architecture including features from the 3.5 release such as
1820 support for Enhanced Virtual Addressing (EVA).
1822 config CPU_MIPS32_3_5_EVA
1823 bool "Enhanced Virtual Addressing (EVA)"
1824 depends on CPU_MIPS32_3_5_FEATURES
1828 Choose this option if you want to enable the Enhanced Virtual
1829 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1830 One of its primary benefits is an increase in the maximum size
1831 of lowmem (up to 3GB). If unsure, say 'N' here.
1833 config CPU_MIPS32_R5_FEATURES
1834 bool "MIPS32 Release 5 Features"
1835 depends on SYS_HAS_CPU_MIPS32_R5
1836 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1838 Choose this option to build a kernel for release 2 or later of the
1839 MIPS32 architecture including features from release 5 such as
1840 support for Extended Physical Addressing (XPA).
1842 config CPU_MIPS32_R5_XPA
1843 bool "Extended Physical Addressing (XPA)"
1844 depends on CPU_MIPS32_R5_FEATURES
1846 depends on !PAGE_SIZE_4KB
1847 depends on SYS_SUPPORTS_HIGHMEM
1850 select PHYS_ADDR_T_64BIT
1853 Choose this option if you want to enable the Extended Physical
1854 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1855 benefit is to increase physical addressing equal to or greater
1856 than 40 bits. Note that this has the side effect of turning on
1857 64-bit addressing which in turn makes the PTEs 64-bit in size.
1858 If unsure, say 'N' here.
1861 config CPU_NOP_WORKAROUNDS
1864 config CPU_JUMP_WORKAROUNDS
1867 config CPU_LOONGSON2F_WORKAROUNDS
1868 bool "Loongson 2F Workarounds"
1870 select CPU_NOP_WORKAROUNDS
1871 select CPU_JUMP_WORKAROUNDS
1873 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1874 require workarounds. Without workarounds the system may hang
1875 unexpectedly. For more information please refer to the gas
1876 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1878 Loongson 2F03 and later have fixed these issues and no workarounds
1879 are needed. The workarounds have no significant side effect on them
1880 but may decrease the performance of the system so this option should
1881 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1884 If unsure, please say Y.
1885 endif # CPU_LOONGSON2F
1887 config SYS_SUPPORTS_ZBOOT
1889 select HAVE_KERNEL_GZIP
1890 select HAVE_KERNEL_BZIP2
1891 select HAVE_KERNEL_LZ4
1892 select HAVE_KERNEL_LZMA
1893 select HAVE_KERNEL_LZO
1894 select HAVE_KERNEL_XZ
1896 config SYS_SUPPORTS_ZBOOT_UART16550
1898 select SYS_SUPPORTS_ZBOOT
1900 config SYS_SUPPORTS_ZBOOT_UART_PROM
1902 select SYS_SUPPORTS_ZBOOT
1904 config CPU_LOONGSON2EF
1906 select CPU_SUPPORTS_32BIT_KERNEL
1907 select CPU_SUPPORTS_64BIT_KERNEL
1908 select CPU_SUPPORTS_HIGHMEM
1909 select CPU_SUPPORTS_HUGEPAGES
1910 select ARCH_HAS_PHYS_TO_DMA
1912 config CPU_LOONGSON32
1916 select CPU_HAS_PREFETCH
1917 select CPU_SUPPORTS_32BIT_KERNEL
1918 select CPU_SUPPORTS_HIGHMEM
1919 select CPU_SUPPORTS_CPUFREQ
1921 config CPU_BMIPS32_3300
1922 select SMP_UP if SMP
1925 config CPU_BMIPS4350
1927 select SYS_SUPPORTS_SMP
1928 select SYS_SUPPORTS_HOTPLUG_CPU
1930 config CPU_BMIPS4380
1932 select MIPS_L1_CACHE_SHIFT_6
1933 select SYS_SUPPORTS_SMP
1934 select SYS_SUPPORTS_HOTPLUG_CPU
1937 config CPU_BMIPS5000
1939 select MIPS_CPU_SCACHE
1940 select MIPS_L1_CACHE_SHIFT_7
1941 select SYS_SUPPORTS_SMP
1942 select SYS_SUPPORTS_HOTPLUG_CPU
1945 config SYS_HAS_CPU_LOONGSON64
1947 select CPU_SUPPORTS_CPUFREQ
1950 config SYS_HAS_CPU_LOONGSON2E
1953 config SYS_HAS_CPU_LOONGSON2F
1955 select CPU_SUPPORTS_CPUFREQ
1956 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1958 config SYS_HAS_CPU_LOONGSON1B
1961 config SYS_HAS_CPU_LOONGSON1C
1964 config SYS_HAS_CPU_MIPS32_R1
1967 config SYS_HAS_CPU_MIPS32_R2
1970 config SYS_HAS_CPU_MIPS32_R3_5
1973 config SYS_HAS_CPU_MIPS32_R5
1975 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1977 config SYS_HAS_CPU_MIPS32_R6
1979 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1981 config SYS_HAS_CPU_MIPS64_R1
1984 config SYS_HAS_CPU_MIPS64_R2
1987 config SYS_HAS_CPU_MIPS64_R6
1989 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1991 config SYS_HAS_CPU_P5600
1993 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1995 config SYS_HAS_CPU_R3000
1998 config SYS_HAS_CPU_TX39XX
2001 config SYS_HAS_CPU_VR41XX
2004 config SYS_HAS_CPU_R4X00
2007 config SYS_HAS_CPU_TX49XX
2010 config SYS_HAS_CPU_R5000
2013 config SYS_HAS_CPU_R5500
2016 config SYS_HAS_CPU_NEVADA
2019 config SYS_HAS_CPU_R10000
2021 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2023 config SYS_HAS_CPU_RM7000
2026 config SYS_HAS_CPU_SB1
2029 config SYS_HAS_CPU_CAVIUM_OCTEON
2032 config SYS_HAS_CPU_BMIPS
2035 config SYS_HAS_CPU_BMIPS32_3300
2037 select SYS_HAS_CPU_BMIPS
2039 config SYS_HAS_CPU_BMIPS4350
2041 select SYS_HAS_CPU_BMIPS
2043 config SYS_HAS_CPU_BMIPS4380
2045 select SYS_HAS_CPU_BMIPS
2047 config SYS_HAS_CPU_BMIPS5000
2049 select SYS_HAS_CPU_BMIPS
2050 select ARCH_HAS_SYNC_DMA_FOR_CPU
2052 config SYS_HAS_CPU_XLR
2055 config SYS_HAS_CPU_XLP
2059 # CPU may reorder R->R, R->W, W->R, W->W
2060 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2062 config WEAK_ORDERING
2066 # CPU may reorder reads and writes beyond LL/SC
2067 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2069 config WEAK_REORDERING_BEYOND_LLSC
2074 # These two indicate any level of the MIPS32 and MIPS64 architecture
2078 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2079 CPU_MIPS32_R6 || CPU_P5600
2083 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2087 # These indicate the revision of the architecture
2091 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2095 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2097 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2102 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2104 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2109 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2111 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2112 select HAVE_ARCH_BITREVERSE
2113 select MIPS_ASID_BITS_VARIABLE
2114 select MIPS_CRC_SUPPORT
2117 config TARGET_ISA_REV
2119 default 1 if CPU_MIPSR1
2120 default 2 if CPU_MIPSR2
2121 default 5 if CPU_MIPSR5
2122 default 6 if CPU_MIPSR6
2125 Reflects the ISA revision being targeted by the kernel build. This
2126 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2134 config SYS_SUPPORTS_32BIT_KERNEL
2136 config SYS_SUPPORTS_64BIT_KERNEL
2138 config CPU_SUPPORTS_32BIT_KERNEL
2140 config CPU_SUPPORTS_64BIT_KERNEL
2142 config CPU_SUPPORTS_CPUFREQ
2144 config CPU_SUPPORTS_ADDRWINCFG
2146 config CPU_SUPPORTS_HUGEPAGES
2148 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2149 config MIPS_PGD_C0_CONTEXT
2151 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2154 # Set to y for ptrace access to watch registers.
2156 config HARDWARE_WATCHPOINTS
2158 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2163 prompt "Kernel code model"
2165 You should only select this option if you have a workload that
2166 actually benefits from 64-bit processing or if your machine has
2167 large memory. You will only be presented a single option in this
2168 menu if your system does not support both 32-bit and 64-bit kernels.
2171 bool "32-bit kernel"
2172 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2175 Select this option if you want to build a 32-bit kernel.
2178 bool "64-bit kernel"
2179 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2181 Select this option if you want to build a 64-bit kernel.
2186 bool "KVM Guest Kernel"
2187 depends on CPU_MIPS32_R2
2188 depends on BROKEN_ON_SMP
2190 Select this option if building a guest kernel for KVM (Trap & Emulate)
2193 config KVM_GUEST_TIMER_FREQ
2194 int "Count/Compare Timer Frequency (MHz)"
2195 depends on KVM_GUEST
2198 Set this to non-zero if building a guest kernel for KVM to skip RTC
2199 emulation when determining guest CPU Frequency. Instead, the guest's
2200 timer frequency is specified directly.
2202 config MIPS_VA_BITS_48
2203 bool "48 bits virtual memory"
2206 Support a maximum at least 48 bits of application virtual
2207 memory. Default is 40 bits or less, depending on the CPU.
2208 For page sizes 16k and above, this option results in a small
2209 memory overhead for page tables. For 4k page size, a fourth
2210 level of page tables is added which imposes both a memory
2211 overhead as well as slower TLB fault handling.
2216 prompt "Kernel page size"
2217 default PAGE_SIZE_4KB
2219 config PAGE_SIZE_4KB
2221 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2223 This option select the standard 4kB Linux page size. On some
2224 R3000-family processors this is the only available page size. Using
2225 4kB page size will minimize memory consumption and is therefore
2226 recommended for low memory systems.
2228 config PAGE_SIZE_8KB
2230 depends on CPU_CAVIUM_OCTEON
2231 depends on !MIPS_VA_BITS_48
2233 Using 8kB page size will result in higher performance kernel at
2234 the price of higher memory consumption. This option is available
2235 only on cnMIPS processors. Note that you will need a suitable Linux
2236 distribution to support this.
2238 config PAGE_SIZE_16KB
2240 depends on !CPU_R3000 && !CPU_TX39XX
2242 Using 16kB page size will result in higher performance kernel at
2243 the price of higher memory consumption. This option is available on
2244 all non-R3000 family processors. Note that you will need a suitable
2245 Linux distribution to support this.
2247 config PAGE_SIZE_32KB
2249 depends on CPU_CAVIUM_OCTEON
2250 depends on !MIPS_VA_BITS_48
2252 Using 32kB page size will result in higher performance kernel at
2253 the price of higher memory consumption. This option is available
2254 only on cnMIPS cores. Note that you will need a suitable Linux
2255 distribution to support this.
2257 config PAGE_SIZE_64KB
2259 depends on !CPU_R3000 && !CPU_TX39XX
2261 Using 64kB page size will result in higher performance kernel at
2262 the price of higher memory consumption. This option is available on
2263 all non-R3000 family processor. Not that at the time of this
2264 writing this option is still high experimental.
2268 config FORCE_MAX_ZONEORDER
2269 int "Maximum zone order"
2270 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2271 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2272 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2273 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2274 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2275 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2279 The kernel memory allocator divides physically contiguous memory
2280 blocks into "zones", where each zone is a power of two number of
2281 pages. This option selects the largest power of two that the kernel
2282 keeps in the memory allocator. If you need to allocate very large
2283 blocks of physically contiguous memory, then you may need to
2284 increase this value.
2286 This config option is actually maximum order plus one. For example,
2287 a value of 11 means that the largest free memory block is 2^10 pages.
2289 The page size is not necessarily 4KB. Keep this in mind
2290 when choosing a value for this option.
2295 config IP22_CPU_SCACHE
2300 # Support for a MIPS32 / MIPS64 style S-caches
2302 config MIPS_CPU_SCACHE
2306 config R5000_CPU_SCACHE
2310 config RM7000_CPU_SCACHE
2314 config SIBYTE_DMA_PAGEOPS
2315 bool "Use DMA to clear/copy pages"
2318 Instead of using the CPU to zero and copy pages, use a Data Mover
2319 channel. These DMA channels are otherwise unused by the standard
2320 SiByte Linux port. Seems to give a small performance benefit.
2322 config CPU_HAS_PREFETCH
2325 config CPU_GENERIC_DUMP_TLB
2327 default y if !(CPU_R3000 || CPU_TX39XX)
2329 config MIPS_FP_SUPPORT
2330 bool "Floating Point support" if EXPERT
2333 Select y to include support for floating point in the kernel
2334 including initialization of FPU hardware, FP context save & restore
2335 and emulation of an FPU where necessary. Without this support any
2336 userland program attempting to use floating point instructions will
2339 If you know that your userland will not attempt to use floating point
2340 instructions then you can say n here to shrink the kernel a little.
2344 config CPU_R2300_FPU
2346 depends on MIPS_FP_SUPPORT
2347 default y if CPU_R3000 || CPU_TX39XX
2354 depends on MIPS_FP_SUPPORT
2355 default y if !CPU_R2300_FPU
2357 config CPU_R4K_CACHE_TLB
2359 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2362 bool "MIPS MT SMP support (1 TC on each available VPE)"
2364 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2365 select CPU_MIPSR2_IRQ_VI
2366 select CPU_MIPSR2_IRQ_EI
2371 select SYS_SUPPORTS_SMP
2372 select SYS_SUPPORTS_SCHED_SMT
2373 select MIPS_PERF_SHARED_TC_COUNTERS
2375 This is a kernel model which is known as SMVP. This is supported
2376 on cores with the MT ASE and uses the available VPEs to implement
2377 virtual processors which supports SMP. This is equivalent to the
2378 Intel Hyperthreading feature. For further information go to
2379 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2385 bool "SMT (multithreading) scheduler support"
2386 depends on SYS_SUPPORTS_SCHED_SMT
2389 SMT scheduler support improves the CPU scheduler's decision making
2390 when dealing with MIPS MT enabled cores at a cost of slightly
2391 increased overhead in some places. If unsure say N here.
2393 config SYS_SUPPORTS_SCHED_SMT
2396 config SYS_SUPPORTS_MULTITHREADING
2399 config MIPS_MT_FPAFF
2400 bool "Dynamic FPU affinity for FP-intensive threads"
2402 depends on MIPS_MT_SMP
2404 config MIPSR2_TO_R6_EMULATOR
2405 bool "MIPS R2-to-R6 emulator"
2406 depends on CPU_MIPSR6
2407 depends on MIPS_FP_SUPPORT
2410 Choose this option if you want to run non-R6 MIPS userland code.
2411 Even if you say 'Y' here, the emulator will still be disabled by
2412 default. You can enable it using the 'mipsr2emu' kernel option.
2413 The only reason this is a build-time option is to save ~14K from the
2416 config SYS_SUPPORTS_VPE_LOADER
2418 depends on SYS_SUPPORTS_MULTITHREADING
2420 Indicates that the platform supports the VPE loader, and provides
2423 config MIPS_VPE_LOADER
2424 bool "VPE loader support."
2425 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2426 select CPU_MIPSR2_IRQ_VI
2427 select CPU_MIPSR2_IRQ_EI
2430 Includes a loader for loading an elf relocatable object
2431 onto another VPE and running it.
2433 config MIPS_VPE_LOADER_CMP
2436 depends on MIPS_VPE_LOADER && MIPS_CMP
2438 config MIPS_VPE_LOADER_MT
2441 depends on MIPS_VPE_LOADER && !MIPS_CMP
2443 config MIPS_VPE_LOADER_TOM
2444 bool "Load VPE program into memory hidden from linux"
2445 depends on MIPS_VPE_LOADER
2448 The loader can use memory that is present but has been hidden from
2449 Linux using the kernel command line option "mem=xxMB". It's up to
2450 you to ensure the amount you put in the option and the space your
2451 program requires is less or equal to the amount physically present.
2453 config MIPS_VPE_APSP_API
2454 bool "Enable support for AP/SP API (RTLX)"
2455 depends on MIPS_VPE_LOADER
2457 config MIPS_VPE_APSP_API_CMP
2460 depends on MIPS_VPE_APSP_API && MIPS_CMP
2462 config MIPS_VPE_APSP_API_MT
2465 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2468 bool "MIPS CMP framework support (DEPRECATED)"
2469 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2472 select SYS_SUPPORTS_SMP
2473 select WEAK_ORDERING
2476 Select this if you are using a bootloader which implements the "CMP
2477 framework" protocol (ie. YAMON) and want your kernel to make use of
2478 its ability to start secondary CPUs.
2480 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2484 bool "MIPS Coherent Processing System support"
2485 depends on SYS_SUPPORTS_MIPS_CPS
2487 select MIPS_CPS_PM if HOTPLUG_CPU
2489 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2490 select SYS_SUPPORTS_HOTPLUG_CPU
2491 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2492 select SYS_SUPPORTS_SMP
2493 select WEAK_ORDERING
2495 Select this if you wish to run an SMP kernel across multiple cores
2496 within a MIPS Coherent Processing System. When this option is
2497 enabled the kernel will probe for other cores and boot them with
2498 no external assistance. It is safe to enable this when hardware
2499 support is unavailable.
2512 config SB1_PASS_2_WORKAROUNDS
2514 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2517 config SB1_PASS_2_1_WORKAROUNDS
2519 depends on CPU_SB1 && CPU_SB1_PASS_2
2523 prompt "SmartMIPS or microMIPS ASE support"
2525 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2528 Select this if you want neither microMIPS nor SmartMIPS support
2530 config CPU_HAS_SMARTMIPS
2531 depends on SYS_SUPPORTS_SMARTMIPS
2534 SmartMIPS is a extension of the MIPS32 architecture aimed at
2535 increased security at both hardware and software level for
2536 smartcards. Enabling this option will allow proper use of the
2537 SmartMIPS instructions by Linux applications. However a kernel with
2538 this option will not work on a MIPS core without SmartMIPS core. If
2539 you don't know you probably don't have SmartMIPS and should say N
2542 config CPU_MICROMIPS
2543 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2546 When this option is enabled the kernel will be built using the
2552 bool "Support for the MIPS SIMD Architecture"
2553 depends on CPU_SUPPORTS_MSA
2554 depends on MIPS_FP_SUPPORT
2555 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2557 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2558 and a set of SIMD instructions to operate on them. When this option
2559 is enabled the kernel will support allocating & switching MSA
2560 vector register contexts. If you know that your kernel will only be
2561 running on CPUs which do not support MSA or that your userland will
2562 not be making use of it then you may wish to say N here to reduce
2563 the size & complexity of your kernel.
2574 depends on !CPU_DIEI_BROKEN
2577 config CPU_DIEI_BROKEN
2583 config CPU_NO_LOAD_STORE_LR
2586 CPU lacks support for unaligned load and store instructions:
2587 LWL, LWR, SWL, SWR (Load/store word left/right).
2588 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2592 # Vectored interrupt mode is an R2 feature
2594 config CPU_MIPSR2_IRQ_VI
2598 # Extended interrupt mode is an R2 feature
2600 config CPU_MIPSR2_IRQ_EI
2605 depends on !CPU_R3000
2611 config CPU_DADDI_WORKAROUNDS
2614 config CPU_R4000_WORKAROUNDS
2616 select CPU_R4400_WORKAROUNDS
2618 config CPU_R4400_WORKAROUNDS
2621 config CPU_R4X00_BUGS64
2623 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2625 config MIPS_ASID_SHIFT
2627 default 6 if CPU_R3000 || CPU_TX39XX
2630 config MIPS_ASID_BITS
2632 default 0 if MIPS_ASID_BITS_VARIABLE
2633 default 6 if CPU_R3000 || CPU_TX39XX
2636 config MIPS_ASID_BITS_VARIABLE
2639 config MIPS_CRC_SUPPORT
2643 # - Highmem only makes sense for the 32-bit kernel.
2644 # - The current highmem code will only work properly on physically indexed
2645 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2646 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2647 # moment we protect the user and offer the highmem option only on machines
2648 # where it's known to be safe. This will not offer highmem on a few systems
2649 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2650 # indexed CPUs but we're playing safe.
2651 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2652 # know they might have memory configurations that could make use of highmem
2656 bool "High Memory Support"
2657 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2659 config CPU_SUPPORTS_HIGHMEM
2662 config SYS_SUPPORTS_HIGHMEM
2665 config SYS_SUPPORTS_SMARTMIPS
2668 config SYS_SUPPORTS_MICROMIPS
2671 config SYS_SUPPORTS_MIPS16
2674 This option must be set if a kernel might be executed on a MIPS16-
2675 enabled CPU even if MIPS16 is not actually being used. In other
2676 words, it makes the kernel MIPS16-tolerant.
2678 config CPU_SUPPORTS_MSA
2681 config ARCH_FLATMEM_ENABLE
2683 depends on !NUMA && !CPU_LOONGSON2EF
2685 config ARCH_SPARSEMEM_ENABLE
2687 select SPARSEMEM_STATIC if !SGI_IP27
2691 depends on SYS_SUPPORTS_NUMA
2693 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2694 Access). This option improves performance on systems with more
2695 than two nodes; on two node systems it is generally better to
2696 leave it disabled; on single node systems leave this option
2699 config SYS_SUPPORTS_NUMA
2702 config HAVE_SETUP_PER_CPU_AREA
2706 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2711 bool "Relocatable kernel"
2712 depends on SYS_SUPPORTS_RELOCATABLE
2713 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2714 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2715 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2716 CPU_P5600 || CAVIUM_OCTEON_SOC
2718 This builds a kernel image that retains relocation information
2719 so it can be loaded someplace besides the default 1MB.
2720 The relocations make the kernel binary about 15% larger,
2721 but are discarded at runtime
2723 config RELOCATION_TABLE_SIZE
2724 hex "Relocation table size"
2725 depends on RELOCATABLE
2726 range 0x0 0x01000000
2727 default "0x00100000"
2729 A table of relocation data will be appended to the kernel binary
2730 and parsed at boot to fix up the relocated kernel.
2732 This option allows the amount of space reserved for the table to be
2733 adjusted, although the default of 1Mb should be ok in most cases.
2735 The build will fail and a valid size suggested if this is too small.
2737 If unsure, leave at the default value.
2739 config RANDOMIZE_BASE
2740 bool "Randomize the address of the kernel image"
2741 depends on RELOCATABLE
2743 Randomizes the physical and virtual address at which the
2744 kernel image is loaded, as a security feature that
2745 deters exploit attempts relying on knowledge of the location
2746 of kernel internals.
2748 Entropy is generated using any coprocessor 0 registers available.
2750 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2754 config RANDOMIZE_BASE_MAX_OFFSET
2755 hex "Maximum kASLR offset" if EXPERT
2756 depends on RANDOMIZE_BASE
2757 range 0x0 0x40000000 if EVA || 64BIT
2758 range 0x0 0x08000000
2759 default "0x01000000"
2761 When kASLR is active, this provides the maximum offset that will
2762 be applied to the kernel image. It should be set according to the
2763 amount of physical RAM available in the target system minus
2764 PHYSICAL_START and must be a power of 2.
2766 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2767 EVA or 64-bit. The default is 16Mb.
2772 depends on NEED_MULTIPLE_NODES
2774 config HW_PERF_EVENTS
2775 bool "Enable hardware performance counter support for perf events"
2776 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2779 Enable hardware performance counter support for perf events. If
2780 disabled, perf events will use software events only.
2783 bool "Enable DMI scanning"
2784 depends on MACH_LOONGSON64
2785 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2788 Enabled scanning of DMI to identify machine quirks. Say Y
2789 here unless you have verified that your setup is not
2790 affected by entries in the DMI blacklist. Required by PNP
2794 bool "Multi-Processing support"
2795 depends on SYS_SUPPORTS_SMP
2797 This enables support for systems with more than one CPU. If you have
2798 a system with only one CPU, say N. If you have a system with more
2799 than one CPU, say Y.
2801 If you say N here, the kernel will run on uni- and multiprocessor
2802 machines, but will use only one CPU of a multiprocessor machine. If
2803 you say Y here, the kernel will run on many, but not all,
2804 uniprocessor machines. On a uniprocessor machine, the kernel
2805 will run faster if you say N here.
2807 People using multiprocessor machines who say Y here should also say
2808 Y to "Enhanced Real Time Clock Support", below.
2810 See also the SMP-HOWTO available at
2811 <https://www.tldp.org/docs.html#howto>.
2813 If you don't know what to do here, say N.
2816 bool "Support for hot-pluggable CPUs"
2817 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2819 Say Y here to allow turning CPUs off and on. CPUs can be
2820 controlled through /sys/devices/system/cpu.
2821 (Note: power management support will enable this option
2822 automatically on SMP systems. )
2823 Say N if you want to disable CPU hotplug.
2828 config SYS_SUPPORTS_MIPS_CMP
2831 config SYS_SUPPORTS_MIPS_CPS
2834 config SYS_SUPPORTS_SMP
2837 config NR_CPUS_DEFAULT_4
2840 config NR_CPUS_DEFAULT_8
2843 config NR_CPUS_DEFAULT_16
2846 config NR_CPUS_DEFAULT_32
2849 config NR_CPUS_DEFAULT_64
2853 int "Maximum number of CPUs (2-256)"
2856 default "4" if NR_CPUS_DEFAULT_4
2857 default "8" if NR_CPUS_DEFAULT_8
2858 default "16" if NR_CPUS_DEFAULT_16
2859 default "32" if NR_CPUS_DEFAULT_32
2860 default "64" if NR_CPUS_DEFAULT_64
2862 This allows you to specify the maximum number of CPUs which this
2863 kernel will support. The maximum supported value is 32 for 32-bit
2864 kernel and 64 for 64-bit kernels; the minimum value which makes
2865 sense is 1 for Qemu (useful only for kernel debugging purposes)
2866 and 2 for all others.
2868 This is purely to save memory - each supported CPU adds
2869 approximately eight kilobytes to the kernel image. For best
2870 performance should round up your number of processors to the next
2873 config MIPS_PERF_SHARED_TC_COUNTERS
2876 config MIPS_NR_CPU_NR_MAP_1024
2879 config MIPS_NR_CPU_NR_MAP
2882 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2883 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2886 # Timer Interrupt Frequency Configuration
2890 prompt "Timer frequency"
2893 Allows the configuration of the timer frequency.
2896 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2899 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2902 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2905 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2908 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2911 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2914 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2917 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2921 config SYS_SUPPORTS_24HZ
2924 config SYS_SUPPORTS_48HZ
2927 config SYS_SUPPORTS_100HZ
2930 config SYS_SUPPORTS_128HZ
2933 config SYS_SUPPORTS_250HZ
2936 config SYS_SUPPORTS_256HZ
2939 config SYS_SUPPORTS_1000HZ
2942 config SYS_SUPPORTS_1024HZ
2945 config SYS_SUPPORTS_ARBIT_HZ
2947 default y if !SYS_SUPPORTS_24HZ && \
2948 !SYS_SUPPORTS_48HZ && \
2949 !SYS_SUPPORTS_100HZ && \
2950 !SYS_SUPPORTS_128HZ && \
2951 !SYS_SUPPORTS_250HZ && \
2952 !SYS_SUPPORTS_256HZ && \
2953 !SYS_SUPPORTS_1000HZ && \
2954 !SYS_SUPPORTS_1024HZ
2960 default 100 if HZ_100
2961 default 128 if HZ_128
2962 default 250 if HZ_250
2963 default 256 if HZ_256
2964 default 1000 if HZ_1000
2965 default 1024 if HZ_1024
2968 def_bool HIGH_RES_TIMERS
2971 bool "Kexec system call"
2974 kexec is a system call that implements the ability to shutdown your
2975 current kernel, and to start another kernel. It is like a reboot
2976 but it is independent of the system firmware. And like a reboot
2977 you can start any kernel with it, not just Linux.
2979 The name comes from the similarity to the exec system call.
2981 It is an ongoing process to be certain the hardware in a machine
2982 is properly shutdown, so do not be surprised if this code does not
2983 initially work for you. As of this writing the exact hardware
2984 interface is strongly in flux, so no good recommendation can be
2988 bool "Kernel crash dumps"
2990 Generate crash dump after being started by kexec.
2991 This should be normally only set in special crash dump kernels
2992 which are loaded in the main kernel with kexec-tools into
2993 a specially reserved region and then later executed after
2994 a crash by kdump/kexec. The crash dump kernel must be compiled
2995 to a memory address not used by the main kernel or firmware using
2998 config PHYSICAL_START
2999 hex "Physical address where the kernel is loaded"
3000 default "0xffffffff84000000"
3001 depends on CRASH_DUMP
3003 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3004 If you plan to use kernel for capturing the crash dump change
3005 this value to start of the reserved region (the "X" value as
3006 specified in the "crashkernel=YM@XM" command line boot parameter
3007 passed to the panic-ed kernel).
3010 bool "Enable seccomp to safely compute untrusted bytecode"
3014 This kernel feature is useful for number crunching applications
3015 that may need to compute untrusted bytecode during their
3016 execution. By using pipes or other transports made available to
3017 the process as file descriptors supporting the read/write
3018 syscalls, it's possible to isolate those applications in
3019 their own address space using seccomp. Once seccomp is
3020 enabled via /proc/<pid>/seccomp, it cannot be disabled
3021 and the task is only allowed to execute a few safe syscalls
3022 defined by each seccomp mode.
3024 If unsure, say Y. Only embedded should say N here.
3026 config MIPS_O32_FP64_SUPPORT
3027 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3028 depends on 32BIT || MIPS32_O32
3030 When this is enabled, the kernel will support use of 64-bit floating
3031 point registers with binaries using the O32 ABI along with the
3032 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3033 32-bit MIPS systems this support is at the cost of increasing the
3034 size and complexity of the compiled FPU emulator. Thus if you are
3035 running a MIPS32 system and know that none of your userland binaries
3036 will require 64-bit floating point, you may wish to reduce the size
3037 of your kernel & potentially improve FP emulation performance by
3040 Although binutils currently supports use of this flag the details
3041 concerning its effect upon the O32 ABI in userland are still being
3042 worked on. In order to avoid userland becoming dependant upon current
3043 behaviour before the details have been finalised, this option should
3044 be considered experimental and only enabled by those working upon
3052 select OF_EARLY_FLATTREE
3062 prompt "Kernel appended dtb support" if USE_OF
3063 default MIPS_NO_APPENDED_DTB
3065 config MIPS_NO_APPENDED_DTB
3068 Do not enable appended dtb support.
3070 config MIPS_ELF_APPENDED_DTB
3073 With this option, the boot code will look for a device tree binary
3074 DTB) included in the vmlinux ELF section .appended_dtb. By default
3075 it is empty and the DTB can be appended using binutils command
3078 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3080 This is meant as a backward compatiblity convenience for those
3081 systems with a bootloader that can't be upgraded to accommodate
3082 the documented boot protocol using a device tree.
3084 config MIPS_RAW_APPENDED_DTB
3085 bool "vmlinux.bin or vmlinuz.bin"
3087 With this option, the boot code will look for a device tree binary
3088 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3089 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3091 This is meant as a backward compatibility convenience for those
3092 systems with a bootloader that can't be upgraded to accommodate
3093 the documented boot protocol using a device tree.
3095 Beware that there is very little in terms of protection against
3096 this option being confused by leftover garbage in memory that might
3097 look like a DTB header after a reboot if no actual DTB is appended
3098 to vmlinux.bin. Do not leave this option active in a production kernel
3099 if you don't intend to always append a DTB.
3103 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3104 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3105 !MACH_LOONGSON64 && !MIPS_MALTA && \
3107 default MIPS_CMDLINE_FROM_BOOTLOADER
3109 config MIPS_CMDLINE_FROM_DTB
3111 bool "Dtb kernel arguments if available"
3113 config MIPS_CMDLINE_DTB_EXTEND
3115 bool "Extend dtb kernel arguments with bootloader arguments"
3117 config MIPS_CMDLINE_FROM_BOOTLOADER
3118 bool "Bootloader kernel arguments if available"
3120 config MIPS_CMDLINE_BUILTIN_EXTEND
3121 depends on CMDLINE_BOOL
3122 bool "Extend builtin kernel arguments with bootloader arguments"
3127 config LOCKDEP_SUPPORT
3131 config STACKTRACE_SUPPORT
3135 config PGTABLE_LEVELS
3137 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3138 default 3 if 64BIT && !PAGE_SIZE_64KB
3141 config MIPS_AUTO_PFN_OFFSET
3144 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3146 config PCI_DRIVERS_GENERIC
3147 select PCI_DOMAINS_GENERIC if PCI
3150 config PCI_DRIVERS_LEGACY
3151 def_bool !PCI_DRIVERS_GENERIC
3152 select NO_GENERIC_PCI_IOPORT_MAP
3153 select PCI_DOMAINS if PCI
3156 # ISA support is now enabled via select. Too many systems still have the one
3157 # or other ISA chip on the board that users don't know about so don't expect
3158 # users to choose the right thing ...
3164 bool "TURBOchannel support"
3165 depends on MACH_DECSTATION
3167 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3168 processors. TURBOchannel programming specifications are available
3170 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3172 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3173 Linux driver support status is documented at:
3174 <http://www.linux-mips.org/wiki/DECstation>
3180 config ARCH_MMAP_RND_BITS_MIN
3184 config ARCH_MMAP_RND_BITS_MAX
3188 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3191 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3198 select MIPS_EXTERNAL_TIMER
3211 config MIPS32_COMPAT
3217 config SYSVIPC_COMPAT
3221 bool "Kernel support for o32 binaries"
3223 select ARCH_WANT_OLD_COMPAT_IPC
3225 select MIPS32_COMPAT
3226 select SYSVIPC_COMPAT if SYSVIPC
3228 Select this option if you want to run o32 binaries. These are pure
3229 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3230 existing binaries are in this format.
3235 bool "Kernel support for n32 binaries"
3237 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3239 select MIPS32_COMPAT
3240 select SYSVIPC_COMPAT if SYSVIPC
3242 Select this option if you want to run n32 binaries. These are
3243 64-bit binaries using 32-bit quantities for addressing and certain
3244 data that would normally be 64-bit. They are used in special
3251 default y if MIPS32_O32 || MIPS32_N32
3254 menu "Power management options"
3256 config ARCH_HIBERNATION_POSSIBLE
3258 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3260 config ARCH_SUSPEND_POSSIBLE
3262 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3264 source "kernel/power/Kconfig"
3268 config MIPS_EXTERNAL_TIMER
3271 menu "CPU Power Management"
3273 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3274 source "drivers/cpufreq/Kconfig"
3277 source "drivers/cpuidle/Kconfig"
3281 source "drivers/firmware/Kconfig"
3283 source "arch/mips/kvm/Kconfig"
3285 source "arch/mips/vdso/Kconfig"