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
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 SWAP_IO_SPACE if CPU_BIG_ENDIAN
882 select SYS_HAS_CPU_R4X00
883 select SYS_HAS_CPU_R5000
884 select SYS_HAS_CPU_R10000
885 select R5000_CPU_SCACHE
886 select SYS_HAS_EARLY_PRINTK
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_64BIT_KERNEL
889 select SYS_SUPPORTS_BIG_ENDIAN
890 select SYS_SUPPORTS_HIGHMEM
891 select SYS_SUPPORTS_LITTLE_ENDIAN
893 The SNI RM200/300/400 are MIPS-based machines manufactured by
894 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
895 Technology and now in turn merged with Fujitsu. Say Y here to
896 support this machine type.
899 bool "Toshiba TX39 series based machines"
902 bool "Toshiba TX49 series based machines"
904 config MIKROTIK_RB532
905 bool "Mikrotik RB532 boards"
908 select DMA_NONCOHERENT
911 select SYS_HAS_CPU_MIPS32_R1
912 select SYS_SUPPORTS_32BIT_KERNEL
913 select SYS_SUPPORTS_LITTLE_ENDIAN
917 select MIPS_L1_CACHE_SHIFT_4
919 Support the Mikrotik(tm) RouterBoard 532 series,
920 based on the IDT RC32434 SoC.
922 config CAVIUM_OCTEON_SOC
923 bool "Cavium Networks Octeon SoC based boards"
925 select ARCH_HAS_PHYS_TO_DMA
927 select PHYS_ADDR_T_64BIT
928 select SYS_SUPPORTS_64BIT_KERNEL
929 select SYS_SUPPORTS_BIG_ENDIAN
931 select EDAC_ATOMIC_SCRUB
932 select SYS_SUPPORTS_LITTLE_ENDIAN
933 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
934 select SYS_HAS_EARLY_PRINTK
935 select SYS_HAS_CPU_CAVIUM_OCTEON
937 select HAVE_PLAT_DELAY
938 select HAVE_PLAT_FW_INIT_CMDLINE
939 select HAVE_PLAT_MEMCPY
944 select ARCH_SPARSEMEM_ENABLE
945 select SYS_SUPPORTS_SMP
946 select NR_CPUS_DEFAULT_64
947 select MIPS_NR_CPU_NR_MAP_1024
949 select MTD_COMPLEX_MAPPINGS
951 select SYS_SUPPORTS_RELOCATABLE
953 This option supports all of the Octeon reference boards from Cavium
954 Networks. It builds a kernel that dynamically determines the Octeon
955 CPU type and supports all known board reference implementations.
956 Some of the supported boards are:
963 Say Y here for most Octeon reference boards.
966 bool "Netlogic XLR/XLS based systems"
969 select SYS_HAS_CPU_XLR
970 select SYS_SUPPORTS_SMP
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_64BIT_KERNEL
975 select PHYS_ADDR_T_64BIT
976 select SYS_SUPPORTS_BIG_ENDIAN
977 select SYS_SUPPORTS_HIGHMEM
978 select NR_CPUS_DEFAULT_32
982 select ZONE_DMA32 if 64BIT
984 select SYS_HAS_EARLY_PRINTK
985 select SYS_SUPPORTS_ZBOOT
986 select SYS_SUPPORTS_ZBOOT_UART16550
988 Support for systems based on Netlogic XLR and XLS processors.
989 Say Y here if you have a XLR or XLS based board.
992 bool "Netlogic XLP based systems"
995 select SYS_HAS_CPU_XLP
996 select SYS_SUPPORTS_SMP
998 select SYS_SUPPORTS_32BIT_KERNEL
999 select SYS_SUPPORTS_64BIT_KERNEL
1000 select PHYS_ADDR_T_64BIT
1002 select SYS_SUPPORTS_BIG_ENDIAN
1003 select SYS_SUPPORTS_LITTLE_ENDIAN
1004 select SYS_SUPPORTS_HIGHMEM
1005 select NR_CPUS_DEFAULT_32
1009 select ZONE_DMA32 if 64BIT
1011 select SYS_HAS_EARLY_PRINTK
1013 select SYS_SUPPORTS_ZBOOT
1014 select SYS_SUPPORTS_ZBOOT_UART16550
1016 This board is based on Netlogic XLP Processor.
1017 Say Y here if you have a XLP based board.
1021 source "arch/mips/alchemy/Kconfig"
1022 source "arch/mips/ath25/Kconfig"
1023 source "arch/mips/ath79/Kconfig"
1024 source "arch/mips/bcm47xx/Kconfig"
1025 source "arch/mips/bcm63xx/Kconfig"
1026 source "arch/mips/bmips/Kconfig"
1027 source "arch/mips/generic/Kconfig"
1028 source "arch/mips/jazz/Kconfig"
1029 source "arch/mips/jz4740/Kconfig"
1030 source "arch/mips/lantiq/Kconfig"
1031 source "arch/mips/pic32/Kconfig"
1032 source "arch/mips/pistachio/Kconfig"
1033 source "arch/mips/ralink/Kconfig"
1034 source "arch/mips/sgi-ip27/Kconfig"
1035 source "arch/mips/sibyte/Kconfig"
1036 source "arch/mips/txx9/Kconfig"
1037 source "arch/mips/vr41xx/Kconfig"
1038 source "arch/mips/cavium-octeon/Kconfig"
1039 source "arch/mips/loongson2ef/Kconfig"
1040 source "arch/mips/loongson32/Kconfig"
1041 source "arch/mips/loongson64/Kconfig"
1042 source "arch/mips/netlogic/Kconfig"
1046 config GENERIC_HWEIGHT
1050 config GENERIC_CALIBRATE_DELAY
1054 config SCHED_OMIT_FRAME_POINTER
1059 # Select some configuration options automatically based on user selections.
1064 config ARCH_MAY_HAVE_PC_FDC
1095 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1101 config MIPS_CLOCK_VSYSCALL
1102 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1111 config ARCH_SUPPORTS_UPROBES
1114 config DMA_MAYBE_COHERENT
1115 select ARCH_HAS_DMA_COHERENCE_H
1116 select DMA_NONCOHERENT
1119 config DMA_PERDEV_COHERENT
1121 select ARCH_HAS_SETUP_DMA_OPS
1122 select DMA_NONCOHERENT
1124 config DMA_NONCOHERENT
1127 # MIPS allows mixing "slightly different" Cacheability and Coherency
1128 # Attribute bits. It is believed that the uncached access through
1129 # KSEG1 and the implementation specific "uncached accelerated" used
1130 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1131 # significant advantages.
1133 select ARCH_HAS_DMA_WRITE_COMBINE
1134 select ARCH_HAS_DMA_PREP_COHERENT
1135 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1136 select ARCH_HAS_DMA_SET_UNCACHED
1137 select DMA_NONCOHERENT_MMAP
1138 select DMA_NONCOHERENT_CACHE_SYNC
1139 select NEED_DMA_MAP_STATE
1141 config SYS_HAS_EARLY_PRINTK
1144 config SYS_SUPPORTS_HOTPLUG_CPU
1147 config MIPS_BONITO64
1156 config NO_IOPORT_MAP
1160 def_bool CPU_NO_LOAD_STORE_LR
1162 config GENERIC_ISA_DMA
1164 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1167 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1169 select GENERIC_ISA_DMA
1171 config HAVE_PLAT_DELAY
1174 config HAVE_PLAT_FW_INIT_CMDLINE
1177 config HAVE_PLAT_MEMCPY
1183 config HOLES_IN_ZONE
1186 config SYS_SUPPORTS_RELOCATABLE
1189 Selected if the platform supports relocating the kernel.
1190 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1191 to allow access to command line and entropy sources.
1193 config MIPS_CBPF_JIT
1195 depends on BPF_JIT && HAVE_CBPF_JIT
1197 config MIPS_EBPF_JIT
1199 depends on BPF_JIT && HAVE_EBPF_JIT
1203 # Endianness selection. Sufficiently obscure so many users don't know what to
1204 # answer,so we try hard to limit the available choices. Also the use of a
1205 # choice statement should be more obvious to the user.
1208 prompt "Endianness selection"
1210 Some MIPS machines can be configured for either little or big endian
1211 byte order. These modes require different kernels and a different
1212 Linux distribution. In general there is one preferred byteorder for a
1213 particular system but some systems are just as commonly used in the
1214 one or the other endianness.
1216 config CPU_BIG_ENDIAN
1218 depends on SYS_SUPPORTS_BIG_ENDIAN
1220 config CPU_LITTLE_ENDIAN
1221 bool "Little endian"
1222 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1229 config SYS_SUPPORTS_APM_EMULATION
1232 config SYS_SUPPORTS_BIG_ENDIAN
1235 config SYS_SUPPORTS_LITTLE_ENDIAN
1238 config SYS_SUPPORTS_HUGETLBFS
1240 depends on CPU_SUPPORTS_HUGEPAGES
1243 config MIPS_HUGE_TLB_SUPPORT
1244 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1261 config PCI_GT64XXX_PCI0
1264 config PCI_XTALK_BRIDGE
1267 config NO_EXCEPT_FILL
1275 select DMA_NONCOHERENT
1276 select SYS_HAS_CPU_MIPS32_R2
1277 select SYS_SUPPORTS_32BIT_KERNEL
1278 select SYS_SUPPORTS_LITTLE_ENDIAN
1279 select SYS_SUPPORTS_BIG_ENDIAN
1280 select SYS_SUPPORTS_MIPS16
1281 select CPU_MIPSR2_IRQ_VI
1290 config SWAP_IO_SPACE
1293 config SGI_HAS_INDYDOG
1305 config SGI_HAS_ZILOG
1308 config SGI_HAS_I8042
1311 config DEFAULT_SGI_PARTITION
1323 config MIPS_L1_CACHE_SHIFT_4
1326 config MIPS_L1_CACHE_SHIFT_5
1329 config MIPS_L1_CACHE_SHIFT_6
1332 config MIPS_L1_CACHE_SHIFT_7
1335 config MIPS_L1_CACHE_SHIFT
1337 default "7" if MIPS_L1_CACHE_SHIFT_7
1338 default "6" if MIPS_L1_CACHE_SHIFT_6
1339 default "5" if MIPS_L1_CACHE_SHIFT_5
1340 default "4" if MIPS_L1_CACHE_SHIFT_4
1343 config ARC_CMDLINE_ONLY
1347 bool "ARC console support"
1348 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1362 menu "CPU selection"
1368 config CPU_LOONGSON64
1369 bool "Loongson 64-bit CPU"
1370 depends on SYS_HAS_CPU_LOONGSON64
1371 select ARCH_HAS_PHYS_TO_DMA
1373 select CPU_HAS_PREFETCH
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_HUGEPAGES
1377 select CPU_SUPPORTS_MSA
1378 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1379 select CPU_MIPSR2_IRQ_VI
1380 select WEAK_ORDERING
1381 select WEAK_REORDERING_BEYOND_LLSC
1382 select MIPS_ASID_BITS_VARIABLE
1383 select MIPS_PGD_C0_CONTEXT
1384 select MIPS_L1_CACHE_SHIFT_6
1389 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1390 cores implements the MIPS64R2 instruction set with many extensions,
1391 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1392 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1393 Loongson-2E/2F is not covered here and will be removed in future.
1395 config LOONGSON3_ENHANCEMENT
1396 bool "New Loongson-3 CPU Enhancements"
1398 depends on CPU_LOONGSON64
1400 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1401 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1402 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1403 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1404 Fast TLB refill support, etc.
1406 This option enable those enhancements which are not probed at run
1407 time. If you want a generic kernel to run on all Loongson 3 machines,
1408 please say 'N' here. If you want a high-performance kernel to run on
1409 new Loongson-3 machines only, please say 'Y' here.
1411 config CPU_LOONGSON3_WORKAROUNDS
1412 bool "Old Loongson-3 LLSC Workarounds"
1414 depends on CPU_LOONGSON64
1416 Loongson-3 processors have the llsc issues which require workarounds.
1417 Without workarounds the system may hang unexpectedly.
1419 Newer Loongson-3 will fix these issues and no workarounds are needed.
1420 The workarounds have no significant side effect on them but may
1421 decrease the performance of the system so this option should be
1422 disabled unless the kernel is intended to be run on old systems.
1424 If unsure, please say Y.
1426 config CPU_LOONGSON3_CPUCFG_EMULATION
1427 bool "Emulate the CPUCFG instruction on older Loongson cores"
1429 depends on CPU_LOONGSON64
1431 Loongson-3A R4 and newer have the CPUCFG instruction available for
1432 userland to query CPU capabilities, much like CPUID on x86. This
1433 option provides emulation of the instruction on older Loongson
1434 cores, back to Loongson-3A1000.
1436 If unsure, please say Y.
1438 config CPU_LOONGSON2E
1440 depends on SYS_HAS_CPU_LOONGSON2E
1441 select CPU_LOONGSON2EF
1443 The Loongson 2E processor implements the MIPS III instruction set
1444 with many extensions.
1446 It has an internal FPGA northbridge, which is compatible to
1449 config CPU_LOONGSON2F
1451 depends on SYS_HAS_CPU_LOONGSON2F
1452 select CPU_LOONGSON2EF
1455 The Loongson 2F processor implements the MIPS III instruction set
1456 with many extensions.
1458 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1459 have a similar programming interface with FPGA northbridge used in
1462 config CPU_LOONGSON1B
1464 depends on SYS_HAS_CPU_LOONGSON1B
1465 select CPU_LOONGSON32
1466 select LEDS_GPIO_REGISTER
1468 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1469 Release 1 instruction set and part of the MIPS32 Release 2
1472 config CPU_LOONGSON1C
1474 depends on SYS_HAS_CPU_LOONGSON1C
1475 select CPU_LOONGSON32
1476 select LEDS_GPIO_REGISTER
1478 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1479 Release 1 instruction set and part of the MIPS32 Release 2
1482 config CPU_MIPS32_R1
1483 bool "MIPS32 Release 1"
1484 depends on SYS_HAS_CPU_MIPS32_R1
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_HIGHMEM
1489 Choose this option to build a kernel for release 1 or later of the
1490 MIPS32 architecture. Most modern embedded systems with a 32-bit
1491 MIPS processor are based on a MIPS32 processor. If you know the
1492 specific type of processor in your system, choose those that one
1493 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1494 Release 2 of the MIPS32 architecture is available since several
1495 years so chances are you even have a MIPS32 Release 2 processor
1496 in which case you should choose CPU_MIPS32_R2 instead for better
1499 config CPU_MIPS32_R2
1500 bool "MIPS32 Release 2"
1501 depends on SYS_HAS_CPU_MIPS32_R2
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1505 select CPU_SUPPORTS_MSA
1508 Choose this option to build a kernel for release 2 or later of the
1509 MIPS32 architecture. Most modern embedded systems with a 32-bit
1510 MIPS processor are based on a MIPS32 processor. If you know the
1511 specific type of processor in your system, choose those that one
1512 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1514 config CPU_MIPS32_R5
1515 bool "MIPS32 Release 5"
1516 depends on SYS_HAS_CPU_MIPS32_R5
1517 select CPU_HAS_PREFETCH
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_MSA
1522 select MIPS_O32_FP64_SUPPORT
1524 Choose this option to build a kernel for release 5 or later of the
1525 MIPS32 architecture. New MIPS processors, starting with the Warrior
1526 family, are based on a MIPS32r5 processor. If you own an older
1527 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1529 config CPU_MIPS32_R6
1530 bool "MIPS32 Release 6"
1531 depends on SYS_HAS_CPU_MIPS32_R6
1532 select CPU_HAS_PREFETCH
1533 select CPU_NO_LOAD_STORE_LR
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_HIGHMEM
1536 select CPU_SUPPORTS_MSA
1538 select MIPS_O32_FP64_SUPPORT
1540 Choose this option to build a kernel for release 6 or later of the
1541 MIPS32 architecture. New MIPS processors, starting with the Warrior
1542 family, are based on a MIPS32r6 processor. If you own an older
1543 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1545 config CPU_MIPS64_R1
1546 bool "MIPS64 Release 1"
1547 depends on SYS_HAS_CPU_MIPS64_R1
1548 select CPU_HAS_PREFETCH
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1551 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_HUGEPAGES
1554 Choose this option to build a kernel for release 1 or later of the
1555 MIPS64 architecture. Many modern embedded systems with a 64-bit
1556 MIPS processor are based on a MIPS64 processor. If you know the
1557 specific type of processor in your system, choose those that one
1558 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1559 Release 2 of the MIPS64 architecture is available since several
1560 years so chances are you even have a MIPS64 Release 2 processor
1561 in which case you should choose CPU_MIPS64_R2 instead for better
1564 config CPU_MIPS64_R2
1565 bool "MIPS64 Release 2"
1566 depends on SYS_HAS_CPU_MIPS64_R2
1567 select CPU_HAS_PREFETCH
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HIGHMEM
1571 select CPU_SUPPORTS_HUGEPAGES
1572 select CPU_SUPPORTS_MSA
1575 Choose this option to build a kernel for release 2 or later of the
1576 MIPS64 architecture. Many modern embedded systems with a 64-bit
1577 MIPS processor are based on a MIPS64 processor. If you know the
1578 specific type of processor in your system, choose those that one
1579 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1581 config CPU_MIPS64_R5
1582 bool "MIPS64 Release 5"
1583 depends on SYS_HAS_CPU_MIPS64_R5
1584 select CPU_HAS_PREFETCH
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select CPU_SUPPORTS_64BIT_KERNEL
1587 select CPU_SUPPORTS_HIGHMEM
1588 select CPU_SUPPORTS_HUGEPAGES
1589 select CPU_SUPPORTS_MSA
1590 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1593 Choose this option to build a kernel for release 5 or later of the
1594 MIPS64 architecture. This is a intermediate MIPS architecture
1595 release partly implementing release 6 features. Though there is no
1596 any hardware known to be based on this release.
1598 config CPU_MIPS64_R6
1599 bool "MIPS64 Release 6"
1600 depends on SYS_HAS_CPU_MIPS64_R6
1601 select CPU_HAS_PREFETCH
1602 select CPU_NO_LOAD_STORE_LR
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 6 or later of the
1612 MIPS64 architecture. New MIPS processors, starting with the Warrior
1613 family, are based on a MIPS64r6 processor. If you own an older
1614 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1617 bool "MIPS Warrior P5600"
1618 depends on SYS_HAS_CPU_P5600
1619 select CPU_HAS_PREFETCH
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_HIGHMEM
1622 select CPU_SUPPORTS_MSA
1623 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1624 select CPU_SUPPORTS_CPUFREQ
1625 select CPU_MIPSR2_IRQ_VI
1626 select CPU_MIPSR2_IRQ_EI
1628 select MIPS_O32_FP64_SUPPORT
1630 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1631 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1632 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1633 level features like up to six P5600 calculation cores, CM2 with L2
1634 cache, IOCU/IOMMU (though might be unused depending on the system-
1635 specific IP core configuration), GIC, CPC, virtualisation module,
1640 depends on SYS_HAS_CPU_R3000
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_HIGHMEM
1646 Please make sure to pick the right CPU type. Linux/MIPS is not
1647 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1648 *not* work on R4000 machines and vice versa. However, since most
1649 of the supported machines have an R4000 (or similar) CPU, R4x00
1650 might be a safe bet. If the resulting kernel does not work,
1651 try to recompile with R3000.
1655 depends on SYS_HAS_CPU_TX39XX
1656 select CPU_SUPPORTS_32BIT_KERNEL
1661 depends on SYS_HAS_CPU_VR41XX
1662 select CPU_SUPPORTS_32BIT_KERNEL
1663 select CPU_SUPPORTS_64BIT_KERNEL
1665 The options selects support for the NEC VR4100 series of processors.
1666 Only choose this option if you have one of these processors as a
1667 kernel built with this option will not run on any other type of
1668 processor or vice versa.
1672 depends on SYS_HAS_CPU_R4X00
1673 select CPU_SUPPORTS_32BIT_KERNEL
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select CPU_SUPPORTS_HUGEPAGES
1677 MIPS Technologies R4000-series processors other than 4300, including
1678 the R4000, R4400, R4600, and 4700.
1682 depends on SYS_HAS_CPU_TX49XX
1683 select CPU_HAS_PREFETCH
1684 select CPU_SUPPORTS_32BIT_KERNEL
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select CPU_SUPPORTS_HUGEPAGES
1690 depends on SYS_HAS_CPU_R5000
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HUGEPAGES
1695 MIPS Technologies R5000-series processors other than the Nevada.
1699 depends on SYS_HAS_CPU_R5500
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_SUPPORTS_HUGEPAGES
1704 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1709 depends on SYS_HAS_CPU_NEVADA
1710 select CPU_SUPPORTS_32BIT_KERNEL
1711 select CPU_SUPPORTS_64BIT_KERNEL
1712 select CPU_SUPPORTS_HUGEPAGES
1714 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1718 depends on SYS_HAS_CPU_R10000
1719 select CPU_HAS_PREFETCH
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_HUGEPAGES
1725 MIPS Technologies R10000-series processors.
1729 depends on SYS_HAS_CPU_RM7000
1730 select CPU_HAS_PREFETCH
1731 select CPU_SUPPORTS_32BIT_KERNEL
1732 select CPU_SUPPORTS_64BIT_KERNEL
1733 select CPU_SUPPORTS_HIGHMEM
1734 select CPU_SUPPORTS_HUGEPAGES
1738 depends on SYS_HAS_CPU_SB1
1739 select CPU_SUPPORTS_32BIT_KERNEL
1740 select CPU_SUPPORTS_64BIT_KERNEL
1741 select CPU_SUPPORTS_HIGHMEM
1742 select CPU_SUPPORTS_HUGEPAGES
1743 select WEAK_ORDERING
1745 config CPU_CAVIUM_OCTEON
1746 bool "Cavium Octeon processor"
1747 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1748 select CPU_HAS_PREFETCH
1749 select CPU_SUPPORTS_64BIT_KERNEL
1750 select WEAK_ORDERING
1751 select CPU_SUPPORTS_HIGHMEM
1752 select CPU_SUPPORTS_HUGEPAGES
1753 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1754 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1755 select MIPS_L1_CACHE_SHIFT_7
1758 The Cavium Octeon processor is a highly integrated chip containing
1759 many ethernet hardware widgets for networking tasks. The processor
1760 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1761 Full details can be found at http://www.caviumnetworks.com.
1764 bool "Broadcom BMIPS"
1765 depends on SYS_HAS_CPU_BMIPS
1767 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1768 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1769 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1770 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1771 select CPU_SUPPORTS_32BIT_KERNEL
1772 select DMA_NONCOHERENT
1774 select SWAP_IO_SPACE
1775 select WEAK_ORDERING
1776 select CPU_SUPPORTS_HIGHMEM
1777 select CPU_HAS_PREFETCH
1778 select CPU_SUPPORTS_CPUFREQ
1779 select MIPS_EXTERNAL_TIMER
1781 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1784 bool "Netlogic XLR SoC"
1785 depends on SYS_HAS_CPU_XLR
1786 select CPU_SUPPORTS_32BIT_KERNEL
1787 select CPU_SUPPORTS_64BIT_KERNEL
1788 select CPU_SUPPORTS_HIGHMEM
1789 select CPU_SUPPORTS_HUGEPAGES
1790 select WEAK_ORDERING
1791 select WEAK_REORDERING_BEYOND_LLSC
1793 Netlogic Microsystems XLR/XLS processors.
1796 bool "Netlogic XLP SoC"
1797 depends on SYS_HAS_CPU_XLP
1798 select CPU_SUPPORTS_32BIT_KERNEL
1799 select CPU_SUPPORTS_64BIT_KERNEL
1800 select CPU_SUPPORTS_HIGHMEM
1801 select WEAK_ORDERING
1802 select WEAK_REORDERING_BEYOND_LLSC
1803 select CPU_HAS_PREFETCH
1805 select CPU_SUPPORTS_HUGEPAGES
1806 select MIPS_ASID_BITS_VARIABLE
1808 Netlogic Microsystems XLP processors.
1811 config CPU_MIPS32_3_5_FEATURES
1812 bool "MIPS32 Release 3.5 Features"
1813 depends on SYS_HAS_CPU_MIPS32_R3_5
1814 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1817 Choose this option to build a kernel for release 2 or later of the
1818 MIPS32 architecture including features from the 3.5 release such as
1819 support for Enhanced Virtual Addressing (EVA).
1821 config CPU_MIPS32_3_5_EVA
1822 bool "Enhanced Virtual Addressing (EVA)"
1823 depends on CPU_MIPS32_3_5_FEATURES
1827 Choose this option if you want to enable the Enhanced Virtual
1828 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1829 One of its primary benefits is an increase in the maximum size
1830 of lowmem (up to 3GB). If unsure, say 'N' here.
1832 config CPU_MIPS32_R5_FEATURES
1833 bool "MIPS32 Release 5 Features"
1834 depends on SYS_HAS_CPU_MIPS32_R5
1835 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1837 Choose this option to build a kernel for release 2 or later of the
1838 MIPS32 architecture including features from release 5 such as
1839 support for Extended Physical Addressing (XPA).
1841 config CPU_MIPS32_R5_XPA
1842 bool "Extended Physical Addressing (XPA)"
1843 depends on CPU_MIPS32_R5_FEATURES
1845 depends on !PAGE_SIZE_4KB
1846 depends on SYS_SUPPORTS_HIGHMEM
1849 select PHYS_ADDR_T_64BIT
1852 Choose this option if you want to enable the Extended Physical
1853 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1854 benefit is to increase physical addressing equal to or greater
1855 than 40 bits. Note that this has the side effect of turning on
1856 64-bit addressing which in turn makes the PTEs 64-bit in size.
1857 If unsure, say 'N' here.
1860 config CPU_NOP_WORKAROUNDS
1863 config CPU_JUMP_WORKAROUNDS
1866 config CPU_LOONGSON2F_WORKAROUNDS
1867 bool "Loongson 2F Workarounds"
1869 select CPU_NOP_WORKAROUNDS
1870 select CPU_JUMP_WORKAROUNDS
1872 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1873 require workarounds. Without workarounds the system may hang
1874 unexpectedly. For more information please refer to the gas
1875 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1877 Loongson 2F03 and later have fixed these issues and no workarounds
1878 are needed. The workarounds have no significant side effect on them
1879 but may decrease the performance of the system so this option should
1880 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1883 If unsure, please say Y.
1884 endif # CPU_LOONGSON2F
1886 config SYS_SUPPORTS_ZBOOT
1888 select HAVE_KERNEL_GZIP
1889 select HAVE_KERNEL_BZIP2
1890 select HAVE_KERNEL_LZ4
1891 select HAVE_KERNEL_LZMA
1892 select HAVE_KERNEL_LZO
1893 select HAVE_KERNEL_XZ
1895 config SYS_SUPPORTS_ZBOOT_UART16550
1897 select SYS_SUPPORTS_ZBOOT
1899 config SYS_SUPPORTS_ZBOOT_UART_PROM
1901 select SYS_SUPPORTS_ZBOOT
1903 config CPU_LOONGSON2EF
1905 select CPU_SUPPORTS_32BIT_KERNEL
1906 select CPU_SUPPORTS_64BIT_KERNEL
1907 select CPU_SUPPORTS_HIGHMEM
1908 select CPU_SUPPORTS_HUGEPAGES
1909 select ARCH_HAS_PHYS_TO_DMA
1911 config CPU_LOONGSON32
1915 select CPU_HAS_PREFETCH
1916 select CPU_SUPPORTS_32BIT_KERNEL
1917 select CPU_SUPPORTS_HIGHMEM
1918 select CPU_SUPPORTS_CPUFREQ
1920 config CPU_BMIPS32_3300
1921 select SMP_UP if SMP
1924 config CPU_BMIPS4350
1926 select SYS_SUPPORTS_SMP
1927 select SYS_SUPPORTS_HOTPLUG_CPU
1929 config CPU_BMIPS4380
1931 select MIPS_L1_CACHE_SHIFT_6
1932 select SYS_SUPPORTS_SMP
1933 select SYS_SUPPORTS_HOTPLUG_CPU
1936 config CPU_BMIPS5000
1938 select MIPS_CPU_SCACHE
1939 select MIPS_L1_CACHE_SHIFT_7
1940 select SYS_SUPPORTS_SMP
1941 select SYS_SUPPORTS_HOTPLUG_CPU
1944 config SYS_HAS_CPU_LOONGSON64
1946 select CPU_SUPPORTS_CPUFREQ
1949 config SYS_HAS_CPU_LOONGSON2E
1952 config SYS_HAS_CPU_LOONGSON2F
1954 select CPU_SUPPORTS_CPUFREQ
1955 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1957 config SYS_HAS_CPU_LOONGSON1B
1960 config SYS_HAS_CPU_LOONGSON1C
1963 config SYS_HAS_CPU_MIPS32_R1
1966 config SYS_HAS_CPU_MIPS32_R2
1969 config SYS_HAS_CPU_MIPS32_R3_5
1972 config SYS_HAS_CPU_MIPS32_R5
1974 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1976 config SYS_HAS_CPU_MIPS32_R6
1978 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1980 config SYS_HAS_CPU_MIPS64_R1
1983 config SYS_HAS_CPU_MIPS64_R2
1986 config SYS_HAS_CPU_MIPS64_R6
1988 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1990 config SYS_HAS_CPU_P5600
1992 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1994 config SYS_HAS_CPU_R3000
1997 config SYS_HAS_CPU_TX39XX
2000 config SYS_HAS_CPU_VR41XX
2003 config SYS_HAS_CPU_R4X00
2006 config SYS_HAS_CPU_TX49XX
2009 config SYS_HAS_CPU_R5000
2012 config SYS_HAS_CPU_R5500
2015 config SYS_HAS_CPU_NEVADA
2018 config SYS_HAS_CPU_R10000
2020 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2022 config SYS_HAS_CPU_RM7000
2025 config SYS_HAS_CPU_SB1
2028 config SYS_HAS_CPU_CAVIUM_OCTEON
2031 config SYS_HAS_CPU_BMIPS
2034 config SYS_HAS_CPU_BMIPS32_3300
2036 select SYS_HAS_CPU_BMIPS
2038 config SYS_HAS_CPU_BMIPS4350
2040 select SYS_HAS_CPU_BMIPS
2042 config SYS_HAS_CPU_BMIPS4380
2044 select SYS_HAS_CPU_BMIPS
2046 config SYS_HAS_CPU_BMIPS5000
2048 select SYS_HAS_CPU_BMIPS
2049 select ARCH_HAS_SYNC_DMA_FOR_CPU
2051 config SYS_HAS_CPU_XLR
2054 config SYS_HAS_CPU_XLP
2058 # CPU may reorder R->R, R->W, W->R, W->W
2059 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2061 config WEAK_ORDERING
2065 # CPU may reorder reads and writes beyond LL/SC
2066 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2068 config WEAK_REORDERING_BEYOND_LLSC
2073 # These two indicate any level of the MIPS32 and MIPS64 architecture
2077 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2078 CPU_MIPS32_R6 || CPU_P5600
2082 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2086 # These indicate the revision of the architecture
2090 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2094 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2096 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2101 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2103 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2108 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2110 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2111 select HAVE_ARCH_BITREVERSE
2112 select MIPS_ASID_BITS_VARIABLE
2113 select MIPS_CRC_SUPPORT
2116 config TARGET_ISA_REV
2118 default 1 if CPU_MIPSR1
2119 default 2 if CPU_MIPSR2
2120 default 5 if CPU_MIPSR5
2121 default 6 if CPU_MIPSR6
2124 Reflects the ISA revision being targeted by the kernel build. This
2125 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2133 config SYS_SUPPORTS_32BIT_KERNEL
2135 config SYS_SUPPORTS_64BIT_KERNEL
2137 config CPU_SUPPORTS_32BIT_KERNEL
2139 config CPU_SUPPORTS_64BIT_KERNEL
2141 config CPU_SUPPORTS_CPUFREQ
2143 config CPU_SUPPORTS_ADDRWINCFG
2145 config CPU_SUPPORTS_HUGEPAGES
2147 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2148 config MIPS_PGD_C0_CONTEXT
2150 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2153 # Set to y for ptrace access to watch registers.
2155 config HARDWARE_WATCHPOINTS
2157 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2162 prompt "Kernel code model"
2164 You should only select this option if you have a workload that
2165 actually benefits from 64-bit processing or if your machine has
2166 large memory. You will only be presented a single option in this
2167 menu if your system does not support both 32-bit and 64-bit kernels.
2170 bool "32-bit kernel"
2171 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2174 Select this option if you want to build a 32-bit kernel.
2177 bool "64-bit kernel"
2178 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2180 Select this option if you want to build a 64-bit kernel.
2185 bool "KVM Guest Kernel"
2186 depends on CPU_MIPS32_R2
2187 depends on BROKEN_ON_SMP
2189 Select this option if building a guest kernel for KVM (Trap & Emulate)
2192 config KVM_GUEST_TIMER_FREQ
2193 int "Count/Compare Timer Frequency (MHz)"
2194 depends on KVM_GUEST
2197 Set this to non-zero if building a guest kernel for KVM to skip RTC
2198 emulation when determining guest CPU Frequency. Instead, the guest's
2199 timer frequency is specified directly.
2201 config MIPS_VA_BITS_48
2202 bool "48 bits virtual memory"
2205 Support a maximum at least 48 bits of application virtual
2206 memory. Default is 40 bits or less, depending on the CPU.
2207 For page sizes 16k and above, this option results in a small
2208 memory overhead for page tables. For 4k page size, a fourth
2209 level of page tables is added which imposes both a memory
2210 overhead as well as slower TLB fault handling.
2215 prompt "Kernel page size"
2216 default PAGE_SIZE_4KB
2218 config PAGE_SIZE_4KB
2220 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2222 This option select the standard 4kB Linux page size. On some
2223 R3000-family processors this is the only available page size. Using
2224 4kB page size will minimize memory consumption and is therefore
2225 recommended for low memory systems.
2227 config PAGE_SIZE_8KB
2229 depends on CPU_CAVIUM_OCTEON
2230 depends on !MIPS_VA_BITS_48
2232 Using 8kB page size will result in higher performance kernel at
2233 the price of higher memory consumption. This option is available
2234 only on cnMIPS processors. Note that you will need a suitable Linux
2235 distribution to support this.
2237 config PAGE_SIZE_16KB
2239 depends on !CPU_R3000 && !CPU_TX39XX
2241 Using 16kB page size will result in higher performance kernel at
2242 the price of higher memory consumption. This option is available on
2243 all non-R3000 family processors. Note that you will need a suitable
2244 Linux distribution to support this.
2246 config PAGE_SIZE_32KB
2248 depends on CPU_CAVIUM_OCTEON
2249 depends on !MIPS_VA_BITS_48
2251 Using 32kB page size will result in higher performance kernel at
2252 the price of higher memory consumption. This option is available
2253 only on cnMIPS cores. Note that you will need a suitable Linux
2254 distribution to support this.
2256 config PAGE_SIZE_64KB
2258 depends on !CPU_R3000 && !CPU_TX39XX
2260 Using 64kB page size will result in higher performance kernel at
2261 the price of higher memory consumption. This option is available on
2262 all non-R3000 family processor. Not that at the time of this
2263 writing this option is still high experimental.
2267 config FORCE_MAX_ZONEORDER
2268 int "Maximum zone order"
2269 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2270 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2271 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2272 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2273 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2274 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2278 The kernel memory allocator divides physically contiguous memory
2279 blocks into "zones", where each zone is a power of two number of
2280 pages. This option selects the largest power of two that the kernel
2281 keeps in the memory allocator. If you need to allocate very large
2282 blocks of physically contiguous memory, then you may need to
2283 increase this value.
2285 This config option is actually maximum order plus one. For example,
2286 a value of 11 means that the largest free memory block is 2^10 pages.
2288 The page size is not necessarily 4KB. Keep this in mind
2289 when choosing a value for this option.
2294 config IP22_CPU_SCACHE
2299 # Support for a MIPS32 / MIPS64 style S-caches
2301 config MIPS_CPU_SCACHE
2305 config R5000_CPU_SCACHE
2309 config RM7000_CPU_SCACHE
2313 config SIBYTE_DMA_PAGEOPS
2314 bool "Use DMA to clear/copy pages"
2317 Instead of using the CPU to zero and copy pages, use a Data Mover
2318 channel. These DMA channels are otherwise unused by the standard
2319 SiByte Linux port. Seems to give a small performance benefit.
2321 config CPU_HAS_PREFETCH
2324 config CPU_GENERIC_DUMP_TLB
2326 default y if !(CPU_R3000 || CPU_TX39XX)
2328 config MIPS_FP_SUPPORT
2329 bool "Floating Point support" if EXPERT
2332 Select y to include support for floating point in the kernel
2333 including initialization of FPU hardware, FP context save & restore
2334 and emulation of an FPU where necessary. Without this support any
2335 userland program attempting to use floating point instructions will
2338 If you know that your userland will not attempt to use floating point
2339 instructions then you can say n here to shrink the kernel a little.
2343 config CPU_R2300_FPU
2345 depends on MIPS_FP_SUPPORT
2346 default y if CPU_R3000 || CPU_TX39XX
2353 depends on MIPS_FP_SUPPORT
2354 default y if !CPU_R2300_FPU
2356 config CPU_R4K_CACHE_TLB
2358 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2361 bool "MIPS MT SMP support (1 TC on each available VPE)"
2363 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2364 select CPU_MIPSR2_IRQ_VI
2365 select CPU_MIPSR2_IRQ_EI
2370 select SYS_SUPPORTS_SMP
2371 select SYS_SUPPORTS_SCHED_SMT
2372 select MIPS_PERF_SHARED_TC_COUNTERS
2374 This is a kernel model which is known as SMVP. This is supported
2375 on cores with the MT ASE and uses the available VPEs to implement
2376 virtual processors which supports SMP. This is equivalent to the
2377 Intel Hyperthreading feature. For further information go to
2378 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2384 bool "SMT (multithreading) scheduler support"
2385 depends on SYS_SUPPORTS_SCHED_SMT
2388 SMT scheduler support improves the CPU scheduler's decision making
2389 when dealing with MIPS MT enabled cores at a cost of slightly
2390 increased overhead in some places. If unsure say N here.
2392 config SYS_SUPPORTS_SCHED_SMT
2395 config SYS_SUPPORTS_MULTITHREADING
2398 config MIPS_MT_FPAFF
2399 bool "Dynamic FPU affinity for FP-intensive threads"
2401 depends on MIPS_MT_SMP
2403 config MIPSR2_TO_R6_EMULATOR
2404 bool "MIPS R2-to-R6 emulator"
2405 depends on CPU_MIPSR6
2406 depends on MIPS_FP_SUPPORT
2409 Choose this option if you want to run non-R6 MIPS userland code.
2410 Even if you say 'Y' here, the emulator will still be disabled by
2411 default. You can enable it using the 'mipsr2emu' kernel option.
2412 The only reason this is a build-time option is to save ~14K from the
2415 config SYS_SUPPORTS_VPE_LOADER
2417 depends on SYS_SUPPORTS_MULTITHREADING
2419 Indicates that the platform supports the VPE loader, and provides
2422 config MIPS_VPE_LOADER
2423 bool "VPE loader support."
2424 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2425 select CPU_MIPSR2_IRQ_VI
2426 select CPU_MIPSR2_IRQ_EI
2429 Includes a loader for loading an elf relocatable object
2430 onto another VPE and running it.
2432 config MIPS_VPE_LOADER_CMP
2435 depends on MIPS_VPE_LOADER && MIPS_CMP
2437 config MIPS_VPE_LOADER_MT
2440 depends on MIPS_VPE_LOADER && !MIPS_CMP
2442 config MIPS_VPE_LOADER_TOM
2443 bool "Load VPE program into memory hidden from linux"
2444 depends on MIPS_VPE_LOADER
2447 The loader can use memory that is present but has been hidden from
2448 Linux using the kernel command line option "mem=xxMB". It's up to
2449 you to ensure the amount you put in the option and the space your
2450 program requires is less or equal to the amount physically present.
2452 config MIPS_VPE_APSP_API
2453 bool "Enable support for AP/SP API (RTLX)"
2454 depends on MIPS_VPE_LOADER
2456 config MIPS_VPE_APSP_API_CMP
2459 depends on MIPS_VPE_APSP_API && MIPS_CMP
2461 config MIPS_VPE_APSP_API_MT
2464 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2467 bool "MIPS CMP framework support (DEPRECATED)"
2468 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2471 select SYS_SUPPORTS_SMP
2472 select WEAK_ORDERING
2475 Select this if you are using a bootloader which implements the "CMP
2476 framework" protocol (ie. YAMON) and want your kernel to make use of
2477 its ability to start secondary CPUs.
2479 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2483 bool "MIPS Coherent Processing System support"
2484 depends on SYS_SUPPORTS_MIPS_CPS
2486 select MIPS_CPS_PM if HOTPLUG_CPU
2488 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2489 select SYS_SUPPORTS_HOTPLUG_CPU
2490 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2491 select SYS_SUPPORTS_SMP
2492 select WEAK_ORDERING
2494 Select this if you wish to run an SMP kernel across multiple cores
2495 within a MIPS Coherent Processing System. When this option is
2496 enabled the kernel will probe for other cores and boot them with
2497 no external assistance. It is safe to enable this when hardware
2498 support is unavailable.
2511 config SB1_PASS_2_WORKAROUNDS
2513 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2516 config SB1_PASS_2_1_WORKAROUNDS
2518 depends on CPU_SB1 && CPU_SB1_PASS_2
2522 prompt "SmartMIPS or microMIPS ASE support"
2524 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2527 Select this if you want neither microMIPS nor SmartMIPS support
2529 config CPU_HAS_SMARTMIPS
2530 depends on SYS_SUPPORTS_SMARTMIPS
2533 SmartMIPS is a extension of the MIPS32 architecture aimed at
2534 increased security at both hardware and software level for
2535 smartcards. Enabling this option will allow proper use of the
2536 SmartMIPS instructions by Linux applications. However a kernel with
2537 this option will not work on a MIPS core without SmartMIPS core. If
2538 you don't know you probably don't have SmartMIPS and should say N
2541 config CPU_MICROMIPS
2542 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2545 When this option is enabled the kernel will be built using the
2551 bool "Support for the MIPS SIMD Architecture"
2552 depends on CPU_SUPPORTS_MSA
2553 depends on MIPS_FP_SUPPORT
2554 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2556 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2557 and a set of SIMD instructions to operate on them. When this option
2558 is enabled the kernel will support allocating & switching MSA
2559 vector register contexts. If you know that your kernel will only be
2560 running on CPUs which do not support MSA or that your userland will
2561 not be making use of it then you may wish to say N here to reduce
2562 the size & complexity of your kernel.
2573 depends on !CPU_DIEI_BROKEN
2576 config CPU_DIEI_BROKEN
2582 config CPU_NO_LOAD_STORE_LR
2585 CPU lacks support for unaligned load and store instructions:
2586 LWL, LWR, SWL, SWR (Load/store word left/right).
2587 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2591 # Vectored interrupt mode is an R2 feature
2593 config CPU_MIPSR2_IRQ_VI
2597 # Extended interrupt mode is an R2 feature
2599 config CPU_MIPSR2_IRQ_EI
2604 depends on !CPU_R3000
2610 config CPU_DADDI_WORKAROUNDS
2613 config CPU_R4000_WORKAROUNDS
2615 select CPU_R4400_WORKAROUNDS
2617 config CPU_R4400_WORKAROUNDS
2620 config CPU_R4X00_BUGS64
2622 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2624 config MIPS_ASID_SHIFT
2626 default 6 if CPU_R3000 || CPU_TX39XX
2629 config MIPS_ASID_BITS
2631 default 0 if MIPS_ASID_BITS_VARIABLE
2632 default 6 if CPU_R3000 || CPU_TX39XX
2635 config MIPS_ASID_BITS_VARIABLE
2638 config MIPS_CRC_SUPPORT
2642 # - Highmem only makes sense for the 32-bit kernel.
2643 # - The current highmem code will only work properly on physically indexed
2644 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2645 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2646 # moment we protect the user and offer the highmem option only on machines
2647 # where it's known to be safe. This will not offer highmem on a few systems
2648 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2649 # indexed CPUs but we're playing safe.
2650 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2651 # know they might have memory configurations that could make use of highmem
2655 bool "High Memory Support"
2656 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2658 config CPU_SUPPORTS_HIGHMEM
2661 config SYS_SUPPORTS_HIGHMEM
2664 config SYS_SUPPORTS_SMARTMIPS
2667 config SYS_SUPPORTS_MICROMIPS
2670 config SYS_SUPPORTS_MIPS16
2673 This option must be set if a kernel might be executed on a MIPS16-
2674 enabled CPU even if MIPS16 is not actually being used. In other
2675 words, it makes the kernel MIPS16-tolerant.
2677 config CPU_SUPPORTS_MSA
2680 config ARCH_FLATMEM_ENABLE
2682 depends on !NUMA && !CPU_LOONGSON2EF
2684 config ARCH_SPARSEMEM_ENABLE
2686 select SPARSEMEM_STATIC if !SGI_IP27
2690 depends on SYS_SUPPORTS_NUMA
2692 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2693 Access). This option improves performance on systems with more
2694 than two nodes; on two node systems it is generally better to
2695 leave it disabled; on single node systems leave this option
2698 config SYS_SUPPORTS_NUMA
2701 config HAVE_SETUP_PER_CPU_AREA
2705 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2710 bool "Relocatable kernel"
2711 depends on SYS_SUPPORTS_RELOCATABLE
2712 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2713 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2714 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2715 CPU_P5600 || CAVIUM_OCTEON_SOC
2717 This builds a kernel image that retains relocation information
2718 so it can be loaded someplace besides the default 1MB.
2719 The relocations make the kernel binary about 15% larger,
2720 but are discarded at runtime
2722 config RELOCATION_TABLE_SIZE
2723 hex "Relocation table size"
2724 depends on RELOCATABLE
2725 range 0x0 0x01000000
2726 default "0x00100000"
2728 A table of relocation data will be appended to the kernel binary
2729 and parsed at boot to fix up the relocated kernel.
2731 This option allows the amount of space reserved for the table to be
2732 adjusted, although the default of 1Mb should be ok in most cases.
2734 The build will fail and a valid size suggested if this is too small.
2736 If unsure, leave at the default value.
2738 config RANDOMIZE_BASE
2739 bool "Randomize the address of the kernel image"
2740 depends on RELOCATABLE
2742 Randomizes the physical and virtual address at which the
2743 kernel image is loaded, as a security feature that
2744 deters exploit attempts relying on knowledge of the location
2745 of kernel internals.
2747 Entropy is generated using any coprocessor 0 registers available.
2749 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2753 config RANDOMIZE_BASE_MAX_OFFSET
2754 hex "Maximum kASLR offset" if EXPERT
2755 depends on RANDOMIZE_BASE
2756 range 0x0 0x40000000 if EVA || 64BIT
2757 range 0x0 0x08000000
2758 default "0x01000000"
2760 When kASLR is active, this provides the maximum offset that will
2761 be applied to the kernel image. It should be set according to the
2762 amount of physical RAM available in the target system minus
2763 PHYSICAL_START and must be a power of 2.
2765 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2766 EVA or 64-bit. The default is 16Mb.
2771 depends on NEED_MULTIPLE_NODES
2773 config HW_PERF_EVENTS
2774 bool "Enable hardware performance counter support for perf events"
2775 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2778 Enable hardware performance counter support for perf events. If
2779 disabled, perf events will use software events only.
2782 bool "Enable DMI scanning"
2783 depends on MACH_LOONGSON64
2784 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2787 Enabled scanning of DMI to identify machine quirks. Say Y
2788 here unless you have verified that your setup is not
2789 affected by entries in the DMI blacklist. Required by PNP
2793 bool "Multi-Processing support"
2794 depends on SYS_SUPPORTS_SMP
2796 This enables support for systems with more than one CPU. If you have
2797 a system with only one CPU, say N. If you have a system with more
2798 than one CPU, say Y.
2800 If you say N here, the kernel will run on uni- and multiprocessor
2801 machines, but will use only one CPU of a multiprocessor machine. If
2802 you say Y here, the kernel will run on many, but not all,
2803 uniprocessor machines. On a uniprocessor machine, the kernel
2804 will run faster if you say N here.
2806 People using multiprocessor machines who say Y here should also say
2807 Y to "Enhanced Real Time Clock Support", below.
2809 See also the SMP-HOWTO available at
2810 <https://www.tldp.org/docs.html#howto>.
2812 If you don't know what to do here, say N.
2815 bool "Support for hot-pluggable CPUs"
2816 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2818 Say Y here to allow turning CPUs off and on. CPUs can be
2819 controlled through /sys/devices/system/cpu.
2820 (Note: power management support will enable this option
2821 automatically on SMP systems. )
2822 Say N if you want to disable CPU hotplug.
2827 config SYS_SUPPORTS_MIPS_CMP
2830 config SYS_SUPPORTS_MIPS_CPS
2833 config SYS_SUPPORTS_SMP
2836 config NR_CPUS_DEFAULT_4
2839 config NR_CPUS_DEFAULT_8
2842 config NR_CPUS_DEFAULT_16
2845 config NR_CPUS_DEFAULT_32
2848 config NR_CPUS_DEFAULT_64
2852 int "Maximum number of CPUs (2-256)"
2855 default "4" if NR_CPUS_DEFAULT_4
2856 default "8" if NR_CPUS_DEFAULT_8
2857 default "16" if NR_CPUS_DEFAULT_16
2858 default "32" if NR_CPUS_DEFAULT_32
2859 default "64" if NR_CPUS_DEFAULT_64
2861 This allows you to specify the maximum number of CPUs which this
2862 kernel will support. The maximum supported value is 32 for 32-bit
2863 kernel and 64 for 64-bit kernels; the minimum value which makes
2864 sense is 1 for Qemu (useful only for kernel debugging purposes)
2865 and 2 for all others.
2867 This is purely to save memory - each supported CPU adds
2868 approximately eight kilobytes to the kernel image. For best
2869 performance should round up your number of processors to the next
2872 config MIPS_PERF_SHARED_TC_COUNTERS
2875 config MIPS_NR_CPU_NR_MAP_1024
2878 config MIPS_NR_CPU_NR_MAP
2881 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2882 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2885 # Timer Interrupt Frequency Configuration
2889 prompt "Timer frequency"
2892 Allows the configuration of the timer frequency.
2895 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2898 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2901 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2904 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2907 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2910 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2913 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2916 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2920 config SYS_SUPPORTS_24HZ
2923 config SYS_SUPPORTS_48HZ
2926 config SYS_SUPPORTS_100HZ
2929 config SYS_SUPPORTS_128HZ
2932 config SYS_SUPPORTS_250HZ
2935 config SYS_SUPPORTS_256HZ
2938 config SYS_SUPPORTS_1000HZ
2941 config SYS_SUPPORTS_1024HZ
2944 config SYS_SUPPORTS_ARBIT_HZ
2946 default y if !SYS_SUPPORTS_24HZ && \
2947 !SYS_SUPPORTS_48HZ && \
2948 !SYS_SUPPORTS_100HZ && \
2949 !SYS_SUPPORTS_128HZ && \
2950 !SYS_SUPPORTS_250HZ && \
2951 !SYS_SUPPORTS_256HZ && \
2952 !SYS_SUPPORTS_1000HZ && \
2953 !SYS_SUPPORTS_1024HZ
2959 default 100 if HZ_100
2960 default 128 if HZ_128
2961 default 250 if HZ_250
2962 default 256 if HZ_256
2963 default 1000 if HZ_1000
2964 default 1024 if HZ_1024
2967 def_bool HIGH_RES_TIMERS
2970 bool "Kexec system call"
2973 kexec is a system call that implements the ability to shutdown your
2974 current kernel, and to start another kernel. It is like a reboot
2975 but it is independent of the system firmware. And like a reboot
2976 you can start any kernel with it, not just Linux.
2978 The name comes from the similarity to the exec system call.
2980 It is an ongoing process to be certain the hardware in a machine
2981 is properly shutdown, so do not be surprised if this code does not
2982 initially work for you. As of this writing the exact hardware
2983 interface is strongly in flux, so no good recommendation can be
2987 bool "Kernel crash dumps"
2989 Generate crash dump after being started by kexec.
2990 This should be normally only set in special crash dump kernels
2991 which are loaded in the main kernel with kexec-tools into
2992 a specially reserved region and then later executed after
2993 a crash by kdump/kexec. The crash dump kernel must be compiled
2994 to a memory address not used by the main kernel or firmware using
2997 config PHYSICAL_START
2998 hex "Physical address where the kernel is loaded"
2999 default "0xffffffff84000000"
3000 depends on CRASH_DUMP
3002 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3003 If you plan to use kernel for capturing the crash dump change
3004 this value to start of the reserved region (the "X" value as
3005 specified in the "crashkernel=YM@XM" command line boot parameter
3006 passed to the panic-ed kernel).
3009 bool "Enable seccomp to safely compute untrusted bytecode"
3013 This kernel feature is useful for number crunching applications
3014 that may need to compute untrusted bytecode during their
3015 execution. By using pipes or other transports made available to
3016 the process as file descriptors supporting the read/write
3017 syscalls, it's possible to isolate those applications in
3018 their own address space using seccomp. Once seccomp is
3019 enabled via /proc/<pid>/seccomp, it cannot be disabled
3020 and the task is only allowed to execute a few safe syscalls
3021 defined by each seccomp mode.
3023 If unsure, say Y. Only embedded should say N here.
3025 config MIPS_O32_FP64_SUPPORT
3026 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3027 depends on 32BIT || MIPS32_O32
3029 When this is enabled, the kernel will support use of 64-bit floating
3030 point registers with binaries using the O32 ABI along with the
3031 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3032 32-bit MIPS systems this support is at the cost of increasing the
3033 size and complexity of the compiled FPU emulator. Thus if you are
3034 running a MIPS32 system and know that none of your userland binaries
3035 will require 64-bit floating point, you may wish to reduce the size
3036 of your kernel & potentially improve FP emulation performance by
3039 Although binutils currently supports use of this flag the details
3040 concerning its effect upon the O32 ABI in userland are still being
3041 worked on. In order to avoid userland becoming dependant upon current
3042 behaviour before the details have been finalised, this option should
3043 be considered experimental and only enabled by those working upon
3051 select OF_EARLY_FLATTREE
3061 prompt "Kernel appended dtb support" if USE_OF
3062 default MIPS_NO_APPENDED_DTB
3064 config MIPS_NO_APPENDED_DTB
3067 Do not enable appended dtb support.
3069 config MIPS_ELF_APPENDED_DTB
3072 With this option, the boot code will look for a device tree binary
3073 DTB) included in the vmlinux ELF section .appended_dtb. By default
3074 it is empty and the DTB can be appended using binutils command
3077 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3079 This is meant as a backward compatiblity convenience for those
3080 systems with a bootloader that can't be upgraded to accommodate
3081 the documented boot protocol using a device tree.
3083 config MIPS_RAW_APPENDED_DTB
3084 bool "vmlinux.bin or vmlinuz.bin"
3086 With this option, the boot code will look for a device tree binary
3087 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3088 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3090 This is meant as a backward compatibility convenience for those
3091 systems with a bootloader that can't be upgraded to accommodate
3092 the documented boot protocol using a device tree.
3094 Beware that there is very little in terms of protection against
3095 this option being confused by leftover garbage in memory that might
3096 look like a DTB header after a reboot if no actual DTB is appended
3097 to vmlinux.bin. Do not leave this option active in a production kernel
3098 if you don't intend to always append a DTB.
3102 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3103 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3104 !MACH_LOONGSON64 && !MIPS_MALTA && \
3106 default MIPS_CMDLINE_FROM_BOOTLOADER
3108 config MIPS_CMDLINE_FROM_DTB
3110 bool "Dtb kernel arguments if available"
3112 config MIPS_CMDLINE_DTB_EXTEND
3114 bool "Extend dtb kernel arguments with bootloader arguments"
3116 config MIPS_CMDLINE_FROM_BOOTLOADER
3117 bool "Bootloader kernel arguments if available"
3119 config MIPS_CMDLINE_BUILTIN_EXTEND
3120 depends on CMDLINE_BOOL
3121 bool "Extend builtin kernel arguments with bootloader arguments"
3126 config LOCKDEP_SUPPORT
3130 config STACKTRACE_SUPPORT
3134 config PGTABLE_LEVELS
3136 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3137 default 3 if 64BIT && !PAGE_SIZE_64KB
3140 config MIPS_AUTO_PFN_OFFSET
3143 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3145 config PCI_DRIVERS_GENERIC
3146 select PCI_DOMAINS_GENERIC if PCI
3149 config PCI_DRIVERS_LEGACY
3150 def_bool !PCI_DRIVERS_GENERIC
3151 select NO_GENERIC_PCI_IOPORT_MAP
3152 select PCI_DOMAINS if PCI
3155 # ISA support is now enabled via select. Too many systems still have the one
3156 # or other ISA chip on the board that users don't know about so don't expect
3157 # users to choose the right thing ...
3163 bool "TURBOchannel support"
3164 depends on MACH_DECSTATION
3166 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3167 processors. TURBOchannel programming specifications are available
3169 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3171 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3172 Linux driver support status is documented at:
3173 <http://www.linux-mips.org/wiki/DECstation>
3179 config ARCH_MMAP_RND_BITS_MIN
3183 config ARCH_MMAP_RND_BITS_MAX
3187 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3190 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3197 select MIPS_EXTERNAL_TIMER
3210 config MIPS32_COMPAT
3216 config SYSVIPC_COMPAT
3220 bool "Kernel support for o32 binaries"
3222 select ARCH_WANT_OLD_COMPAT_IPC
3224 select MIPS32_COMPAT
3225 select SYSVIPC_COMPAT if SYSVIPC
3227 Select this option if you want to run o32 binaries. These are pure
3228 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3229 existing binaries are in this format.
3234 bool "Kernel support for n32 binaries"
3236 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3238 select MIPS32_COMPAT
3239 select SYSVIPC_COMPAT if SYSVIPC
3241 Select this option if you want to run n32 binaries. These are
3242 64-bit binaries using 32-bit quantities for addressing and certain
3243 data that would normally be 64-bit. They are used in special
3250 default y if MIPS32_O32 || MIPS32_N32
3253 menu "Power management options"
3255 config ARCH_HIBERNATION_POSSIBLE
3257 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3259 config ARCH_SUSPEND_POSSIBLE
3261 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3263 source "kernel/power/Kconfig"
3267 config MIPS_EXTERNAL_TIMER
3270 menu "CPU Power Management"
3272 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3273 source "drivers/cpufreq/Kconfig"
3276 source "drivers/cpuidle/Kconfig"
3280 source "drivers/firmware/Kconfig"
3282 source "arch/mips/kvm/Kconfig"
3284 source "arch/mips/vdso/Kconfig"