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_CLOCKSOURCE_DATA
8 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
9 select ARCH_HAS_UBSAN_SANITIZE_ALL
10 select ARCH_HAS_FORTIFY_SOURCE
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
20 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
21 select CPU_PM if CPU_IDLE
22 select GENERIC_ATOMIC64 if !64BIT
23 select GENERIC_CLOCKEVENTS
24 select GENERIC_CMOS_UPDATE
25 select GENERIC_CPU_AUTOPROBE
26 select GENERIC_GETTIMEOFDAY
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select GENERIC_ISA_DMA if EISA
31 select GENERIC_LIB_ASHLDI3
32 select GENERIC_LIB_ASHRDI3
33 select GENERIC_LIB_CMPDI2
34 select GENERIC_LIB_LSHRDI3
35 select GENERIC_LIB_UCMPDI2
36 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_TIME_VSYSCALL
39 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
40 select HANDLE_DOMAIN_IRQ
41 select HAVE_ARCH_COMPILER_H
42 select HAVE_ARCH_JUMP_LABEL
44 select HAVE_ARCH_MMAP_RND_BITS if MMU
45 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
46 select HAVE_ARCH_SECCOMP_FILTER
47 select HAVE_ARCH_TRACEHOOK
48 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
49 select HAVE_ASM_MODVERSIONS
50 select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
51 select HAVE_CONTEXT_TRACKING
52 select HAVE_COPY_THREAD_TLS
53 select HAVE_C_RECORDMCOUNT
54 select HAVE_DEBUG_KMEMLEAK
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_DMA_CONTIGUOUS
57 select HAVE_DYNAMIC_FTRACE
58 select HAVE_EXIT_THREAD
60 select HAVE_FTRACE_MCOUNT_RECORD
61 select HAVE_FUNCTION_GRAPH_TRACER
62 select HAVE_FUNCTION_TRACER
64 select HAVE_IOREMAP_PROT
65 select HAVE_IRQ_EXIT_ON_IRQ_STACK
66 select HAVE_IRQ_TIME_ACCOUNTING
68 select HAVE_KRETPROBES
69 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
70 select HAVE_MEMBLOCK_NODE_MAP
71 select HAVE_MOD_ARCH_SPECIFIC
74 select HAVE_PERF_EVENTS
75 select HAVE_REGS_AND_STACK_ACCESS_API
77 select HAVE_SPARSE_SYSCALL_NR
78 select HAVE_STACKPROTECTOR
79 select HAVE_SYSCALL_TRACEPOINTS
80 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
81 select HAVE_GENERIC_VDSO
82 select IRQ_FORCED_THREADING
84 select MODULES_USE_ELF_RELA if MODULES && 64BIT
85 select MODULES_USE_ELF_REL if MODULES
86 select PERF_USE_VMALLOC
88 select SYSCTL_EXCEPTION_TRACE
90 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
92 select HAVE_GCC_PLUGINS
94 menu "Machine selection"
101 bool "Generic board-agnostic MIPS kernel"
105 select CLKSRC_MIPS_GIC
107 select CPU_MIPSR2_IRQ_VI
108 select CPU_MIPSR2_IRQ_EI
110 select DMA_PERDEV_COHERENT
114 select MIPS_AUTO_PFN_OFFSET
115 select MIPS_CPU_SCACHE
117 select MIPS_L1_CACHE_SHIFT_7
118 select NO_EXCEPT_FILL
119 select PCI_DRIVERS_GENERIC
123 select SYS_HAS_CPU_MIPS32_R1
124 select SYS_HAS_CPU_MIPS32_R2
125 select SYS_HAS_CPU_MIPS32_R6
126 select SYS_HAS_CPU_MIPS64_R1
127 select SYS_HAS_CPU_MIPS64_R2
128 select SYS_HAS_CPU_MIPS64_R6
129 select SYS_SUPPORTS_32BIT_KERNEL
130 select SYS_SUPPORTS_64BIT_KERNEL
131 select SYS_SUPPORTS_BIG_ENDIAN
132 select SYS_SUPPORTS_HIGHMEM
133 select SYS_SUPPORTS_LITTLE_ENDIAN
134 select SYS_SUPPORTS_MICROMIPS
135 select SYS_SUPPORTS_MIPS_CPS
136 select SYS_SUPPORTS_MIPS16
137 select SYS_SUPPORTS_MULTITHREADING
138 select SYS_SUPPORTS_RELOCATABLE
139 select SYS_SUPPORTS_SMARTMIPS
140 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
141 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
142 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
143 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
144 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
145 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
149 Select this to build a kernel which aims to support multiple boards,
150 generally using a flattened device tree passed from the bootloader
151 using the boot protocol defined in the UHI (Unified Hosting
152 Interface) specification.
155 bool "Alchemy processor based machines"
156 select PHYS_ADDR_T_64BIT
160 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
161 select SYS_HAS_CPU_MIPS32_R1
162 select SYS_SUPPORTS_32BIT_KERNEL
163 select SYS_SUPPORTS_APM_EMULATION
165 select SYS_SUPPORTS_ZBOOT
169 bool "Texas Instruments AR7"
171 select DMA_NONCOHERENT
175 select NO_EXCEPT_FILL
177 select SYS_HAS_CPU_MIPS32_R1
178 select SYS_HAS_EARLY_PRINTK
179 select SYS_SUPPORTS_32BIT_KERNEL
180 select SYS_SUPPORTS_LITTLE_ENDIAN
181 select SYS_SUPPORTS_MIPS16
182 select SYS_SUPPORTS_ZBOOT_UART16550
187 Support for the Texas Instruments AR7 System-on-a-Chip
188 family: TNETD7100, 7200 and 7300.
191 bool "Atheros AR231x/AR531x SoC support"
194 select DMA_NONCOHERENT
197 select SYS_HAS_CPU_MIPS32_R1
198 select SYS_SUPPORTS_BIG_ENDIAN
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_HAS_EARLY_PRINTK
202 Support for Atheros AR231x and Atheros AR531x based boards
205 bool "Atheros AR71XX/AR724X/AR913X based boards"
206 select ARCH_HAS_RESET_CONTROLLER
210 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
303 select MIPS_L1_CACHE_SHIFT_4
306 Support for BCM63XX based boards
313 select DMA_NONCOHERENT
319 select PCI_GT64XXX_PCI0
320 select SYS_HAS_CPU_NEVADA
321 select SYS_HAS_EARLY_PRINTK
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_64BIT_KERNEL
324 select SYS_SUPPORTS_LITTLE_ENDIAN
325 select USE_GENERIC_EARLY_PRINTK_8250
327 config MACH_DECSTATION
331 select CEVT_R4K if CPU_R4X00
333 select CSRC_R4K if CPU_R4X00
334 select CPU_DADDI_WORKAROUNDS if 64BIT
335 select CPU_R4000_WORKAROUNDS if 64BIT
336 select CPU_R4400_WORKAROUNDS if 64BIT
337 select DMA_NONCOHERENT
340 select SYS_HAS_CPU_R3000
341 select SYS_HAS_CPU_R4X00
342 select SYS_SUPPORTS_32BIT_KERNEL
343 select SYS_SUPPORTS_64BIT_KERNEL
344 select SYS_SUPPORTS_LITTLE_ENDIAN
345 select SYS_SUPPORTS_128HZ
346 select SYS_SUPPORTS_256HZ
347 select SYS_SUPPORTS_1024HZ
348 select MIPS_L1_CACHE_SHIFT_4
350 This enables support for DEC's MIPS based workstations. For details
351 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
352 DECstation porting pages on <http://decstation.unix-ag.org/>.
354 If you have one of the following DECstation Models you definitely
355 want to choose R4xx0 for the CPU Type:
362 otherwise choose R3000.
365 bool "Jazz family of machines"
368 select ARCH_MIGHT_HAVE_PC_PARPORT
369 select ARCH_MIGHT_HAVE_PC_SERIO
372 select ARCH_MAY_HAVE_PC_FDC
375 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
376 select GENERIC_ISA_DMA
377 select HAVE_PCSPKR_PLATFORM
382 select SYS_HAS_CPU_R4X00
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_64BIT_KERNEL
385 select SYS_SUPPORTS_100HZ
387 This a family of machines based on the MIPS R4030 chipset which was
388 used by several vendors to build RISC/os and Windows NT workstations.
389 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
390 Olivetti M700-10 workstations.
393 bool "Ingenic SoC based machines"
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_ZBOOT_UART16550
397 select CPU_SUPPORTS_HUGEPAGES
398 select DMA_NONCOHERENT
403 select GENERIC_IRQ_CHIP
404 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
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
428 select PINCTRL_LANTIQ
429 select ARCH_HAS_RESET_CONTROLLER
430 select RESET_CONTROLLER
433 bool "LASAT Networks platforms"
437 select DMA_NONCOHERENT
438 select SYS_HAS_EARLY_PRINTK
441 select PCI_GT64XXX_PCI0
443 select R5000_CPU_SCACHE
444 select SYS_HAS_CPU_R5000
445 select SYS_SUPPORTS_32BIT_KERNEL
446 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
447 select SYS_SUPPORTS_LITTLE_ENDIAN
449 config MACH_LOONGSON32
450 bool "Loongson 32-bit family of machines"
451 select SYS_SUPPORTS_ZBOOT
453 This enables support for the Loongson-1 family of machines.
455 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
456 the Institute of Computing Technology (ICT), Chinese Academy of
459 config MACH_LOONGSON2EF
460 bool "Loongson-2E/F family of machines"
461 select SYS_SUPPORTS_ZBOOT
463 This enables the support of early Loongson-2E/F family of machines.
465 config MACH_LOONGSON64
466 bool "Loongson 64-bit family of machines"
467 select ARCH_SPARSEMEM_ENABLE
468 select ARCH_MIGHT_HAVE_PC_PARPORT
469 select ARCH_MIGHT_HAVE_PC_SERIO
470 select GENERIC_ISA_DMA_SUPPORT_BROKEN
480 select NR_CPUS_DEFAULT_4
481 select USE_GENERIC_EARLY_PRINTK_8250
482 select SYS_HAS_CPU_LOONGSON64
483 select SYS_HAS_EARLY_PRINTK
484 select SYS_SUPPORTS_SMP
485 select SYS_SUPPORTS_HOTPLUG_CPU
486 select SYS_SUPPORTS_NUMA
487 select SYS_SUPPORTS_64BIT_KERNEL
488 select SYS_SUPPORTS_HIGHMEM
489 select SYS_SUPPORTS_LITTLE_ENDIAN
490 select SYS_SUPPORTS_ZBOOT
491 select LOONGSON_MC146818
495 This enables the support of Loongson-2/3 family of machines.
497 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
498 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
499 and Loongson-2F which will be removed), developed by the Institute
500 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
502 config MACH_PISTACHIO
503 bool "IMG Pistachio SoC based boards"
507 select CLKSRC_MIPS_GIC
510 select DMA_NONCOHERENT
515 select MIPS_CPU_SCACHE
519 select SYS_HAS_CPU_MIPS32_R2
520 select SYS_SUPPORTS_32BIT_KERNEL
521 select SYS_SUPPORTS_LITTLE_ENDIAN
522 select SYS_SUPPORTS_MIPS_CPS
523 select SYS_SUPPORTS_MULTITHREADING
524 select SYS_SUPPORTS_RELOCATABLE
525 select SYS_SUPPORTS_ZBOOT
526 select SYS_HAS_EARLY_PRINTK
527 select USE_GENERIC_EARLY_PRINTK_8250
530 This enables support for the IMG Pistachio SoC platform.
533 bool "MIPS Malta board"
534 select ARCH_MAY_HAVE_PC_FDC
535 select ARCH_MIGHT_HAVE_PC_PARPORT
536 select ARCH_MIGHT_HAVE_PC_SERIO
541 select CLKSRC_MIPS_GIC
544 select DMA_MAYBE_COHERENT
545 select GENERIC_ISA_DMA
546 select HAVE_PCSPKR_PLATFORM
553 select MIPS_CPU_SCACHE
555 select MIPS_L1_CACHE_SHIFT_6
557 select PCI_GT64XXX_PCI0
560 select SYS_HAS_CPU_MIPS32_R1
561 select SYS_HAS_CPU_MIPS32_R2
562 select SYS_HAS_CPU_MIPS32_R3_5
563 select SYS_HAS_CPU_MIPS32_R5
564 select SYS_HAS_CPU_MIPS32_R6
565 select SYS_HAS_CPU_MIPS64_R1
566 select SYS_HAS_CPU_MIPS64_R2
567 select SYS_HAS_CPU_MIPS64_R6
568 select SYS_HAS_CPU_NEVADA
569 select SYS_HAS_CPU_RM7000
570 select SYS_SUPPORTS_32BIT_KERNEL
571 select SYS_SUPPORTS_64BIT_KERNEL
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_HIGHMEM
574 select SYS_SUPPORTS_LITTLE_ENDIAN
575 select SYS_SUPPORTS_MICROMIPS
576 select SYS_SUPPORTS_MIPS16
577 select SYS_SUPPORTS_MIPS_CMP
578 select SYS_SUPPORTS_MIPS_CPS
579 select SYS_SUPPORTS_MULTITHREADING
580 select SYS_SUPPORTS_RELOCATABLE
581 select SYS_SUPPORTS_SMARTMIPS
582 select SYS_SUPPORTS_VPE_LOADER
583 select SYS_SUPPORTS_ZBOOT
585 select ZONE_DMA32 if 64BIT
587 This enables support for the MIPS Technologies Malta evaluation
591 bool "Microchip PIC32 Family"
593 This enables support for the Microchip PIC32 family of platforms.
595 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
599 bool "NEC EMMA2RH Mark-eins board"
603 This enables support for the NEC Electronics Mark-eins boards.
606 bool "NEC VR4100 series based machines"
609 select SYS_HAS_CPU_VR41XX
610 select SYS_SUPPORTS_MIPS16
614 bool "NXP STB220 board"
617 Support for NXP Semiconductors STB220 Development Board.
624 Support for NXP Semiconductors STB225 Development Board.
627 bool "PMC-Sierra MSP chipsets"
630 select DMA_NONCOHERENT
632 select NO_EXCEPT_FILL
634 select SYS_HAS_CPU_MIPS32_R1
635 select SYS_HAS_CPU_MIPS32_R2
636 select SYS_SUPPORTS_32BIT_KERNEL
637 select SYS_SUPPORTS_BIG_ENDIAN
638 select SYS_SUPPORTS_MIPS16
641 select SERIAL_8250_CONSOLE
642 select USB_EHCI_BIG_ENDIAN_MMIO
643 select USB_EHCI_BIG_ENDIAN_DESC
645 This adds support for the PMC-Sierra family of Multi-Service
646 Processor System-On-A-Chips. These parts include a number
647 of integrated peripherals, interfaces and DSPs in addition to
648 a variety of MIPS cores.
651 bool "Ralink based machines"
655 select DMA_NONCOHERENT
658 select SYS_HAS_CPU_MIPS32_R1
659 select SYS_HAS_CPU_MIPS32_R2
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_LITTLE_ENDIAN
662 select SYS_SUPPORTS_MIPS16
663 select SYS_HAS_EARLY_PRINTK
665 select ARCH_HAS_RESET_CONTROLLER
666 select RESET_CONTROLLER
669 bool "SGI IP22 (Indy/Indigo2)"
674 select ARCH_MIGHT_HAVE_PC_SERIO
678 select DEFAULT_SGI_PARTITION
679 select DMA_NONCOHERENT
683 select IP22_CPU_SCACHE
685 select GENERIC_ISA_DMA_SUPPORT_BROKEN
687 select SGI_HAS_INDYDOG
693 select SYS_HAS_CPU_R4X00
694 select SYS_HAS_CPU_R5000
695 select SYS_HAS_EARLY_PRINTK
696 select SYS_SUPPORTS_32BIT_KERNEL
697 select SYS_SUPPORTS_64BIT_KERNEL
698 select SYS_SUPPORTS_BIG_ENDIAN
699 select MIPS_L1_CACHE_SHIFT_7
701 This are the SGI Indy, Challenge S and Indigo2, as well as certain
702 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
703 that runs on these, say Y here.
706 bool "SGI IP27 (Origin200/2000)"
707 select ARCH_HAS_PHYS_TO_DMA
708 select ARCH_SPARSEMEM_ENABLE
711 select ARC_CMDLINE_ONLY
713 select DEFAULT_SGI_PARTITION
714 select SYS_HAS_EARLY_PRINTK
717 select IRQ_DOMAIN_HIERARCHY
718 select NR_CPUS_DEFAULT_64
719 select PCI_DRIVERS_GENERIC
720 select PCI_XTALK_BRIDGE
721 select SYS_HAS_CPU_R10000
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_NUMA
725 select SYS_SUPPORTS_SMP
726 select MIPS_L1_CACHE_SHIFT_7
728 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
729 workstations. To compile a Linux kernel that runs on these, say Y
733 bool "SGI IP28 (Indigo2 R10k)"
738 select ARCH_MIGHT_HAVE_PC_SERIO
742 select DEFAULT_SGI_PARTITION
743 select DMA_NONCOHERENT
744 select GENERIC_ISA_DMA_SUPPORT_BROKEN
750 select SGI_HAS_INDYDOG
756 select SYS_HAS_CPU_R10000
757 select SYS_HAS_EARLY_PRINTK
758 select SYS_SUPPORTS_64BIT_KERNEL
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select MIPS_L1_CACHE_SHIFT_7
762 This is the SGI Indigo2 with R10000 processor. To compile a Linux
763 kernel that runs on these, say Y here.
766 bool "SGI IP30 (Octane/Octane2)"
767 select ARCH_HAS_PHYS_TO_DMA
773 select SYNC_R4K if SMP
777 select IRQ_DOMAIN_HIERARCHY
778 select NR_CPUS_DEFAULT_2
779 select PCI_DRIVERS_GENERIC
780 select PCI_XTALK_BRIDGE
781 select SYS_HAS_EARLY_PRINTK
782 select SYS_HAS_CPU_R10000
783 select SYS_SUPPORTS_64BIT_KERNEL
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_SMP
786 select MIPS_L1_CACHE_SHIFT_7
789 These are the SGI Octane and Octane2 graphics workstations. To
790 compile a Linux kernel that runs on these, say Y here.
796 select ARCH_HAS_PHYS_TO_DMA
802 select DMA_NONCOHERENT
805 select R5000_CPU_SCACHE
806 select RM7000_CPU_SCACHE
807 select SYS_HAS_CPU_R5000
808 select SYS_HAS_CPU_R10000 if BROKEN
809 select SYS_HAS_CPU_RM7000
810 select SYS_HAS_CPU_NEVADA
811 select SYS_SUPPORTS_64BIT_KERNEL
812 select SYS_SUPPORTS_BIG_ENDIAN
814 If you want this kernel to run on SGI O2 workstation, say Y here.
817 bool "Sibyte BCM91120C-CRhine"
819 select SIBYTE_BCM1120
821 select SYS_HAS_CPU_SB1
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_LITTLE_ENDIAN
826 bool "Sibyte BCM91120x-Carmel"
828 select SIBYTE_BCM1120
830 select SYS_HAS_CPU_SB1
831 select SYS_SUPPORTS_BIG_ENDIAN
832 select SYS_SUPPORTS_LITTLE_ENDIAN
835 bool "Sibyte BCM91125C-CRhone"
837 select SIBYTE_BCM1125
839 select SYS_HAS_CPU_SB1
840 select SYS_SUPPORTS_BIG_ENDIAN
841 select SYS_SUPPORTS_HIGHMEM
842 select SYS_SUPPORTS_LITTLE_ENDIAN
845 bool "Sibyte BCM91125E-Rhone"
847 select SIBYTE_BCM1125H
849 select SYS_HAS_CPU_SB1
850 select SYS_SUPPORTS_BIG_ENDIAN
851 select SYS_SUPPORTS_LITTLE_ENDIAN
854 bool "Sibyte BCM91250A-SWARM"
856 select HAVE_PATA_PLATFORM
859 select SYS_HAS_CPU_SB1
860 select SYS_SUPPORTS_BIG_ENDIAN
861 select SYS_SUPPORTS_HIGHMEM
862 select SYS_SUPPORTS_LITTLE_ENDIAN
863 select ZONE_DMA32 if 64BIT
864 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
866 config SIBYTE_LITTLESUR
867 bool "Sibyte BCM91250C2-LittleSur"
869 select HAVE_PATA_PLATFORM
872 select SYS_HAS_CPU_SB1
873 select SYS_SUPPORTS_BIG_ENDIAN
874 select SYS_SUPPORTS_HIGHMEM
875 select SYS_SUPPORTS_LITTLE_ENDIAN
876 select ZONE_DMA32 if 64BIT
878 config SIBYTE_SENTOSA
879 bool "Sibyte BCM91250E-Sentosa"
883 select SYS_HAS_CPU_SB1
884 select SYS_SUPPORTS_BIG_ENDIAN
885 select SYS_SUPPORTS_LITTLE_ENDIAN
886 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
889 bool "Sibyte BCM91480B-BigSur"
891 select NR_CPUS_DEFAULT_4
892 select SIBYTE_BCM1x80
894 select SYS_HAS_CPU_SB1
895 select SYS_SUPPORTS_BIG_ENDIAN
896 select SYS_SUPPORTS_HIGHMEM
897 select SYS_SUPPORTS_LITTLE_ENDIAN
898 select ZONE_DMA32 if 64BIT
899 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
902 bool "SNI RM200/300/400"
905 select FW_ARC if CPU_LITTLE_ENDIAN
906 select FW_ARC32 if CPU_LITTLE_ENDIAN
907 select FW_SNIPROM if CPU_BIG_ENDIAN
908 select ARCH_MAY_HAVE_PC_FDC
909 select ARCH_MIGHT_HAVE_PC_PARPORT
910 select ARCH_MIGHT_HAVE_PC_SERIO
914 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
915 select DMA_NONCOHERENT
916 select GENERIC_ISA_DMA
918 select HAVE_PCSPKR_PLATFORM
924 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
925 select SYS_HAS_CPU_R4X00
926 select SYS_HAS_CPU_R5000
927 select SYS_HAS_CPU_R10000
928 select R5000_CPU_SCACHE
929 select SYS_HAS_EARLY_PRINTK
930 select SYS_SUPPORTS_32BIT_KERNEL
931 select SYS_SUPPORTS_64BIT_KERNEL
932 select SYS_SUPPORTS_BIG_ENDIAN
933 select SYS_SUPPORTS_HIGHMEM
934 select SYS_SUPPORTS_LITTLE_ENDIAN
936 The SNI RM200/300/400 are MIPS-based machines manufactured by
937 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
938 Technology and now in turn merged with Fujitsu. Say Y here to
939 support this machine type.
942 bool "Toshiba TX39 series based machines"
945 bool "Toshiba TX49 series based machines"
947 config MIKROTIK_RB532
948 bool "Mikrotik RB532 boards"
951 select DMA_NONCOHERENT
954 select SYS_HAS_CPU_MIPS32_R1
955 select SYS_SUPPORTS_32BIT_KERNEL
956 select SYS_SUPPORTS_LITTLE_ENDIAN
960 select MIPS_L1_CACHE_SHIFT_4
962 Support the Mikrotik(tm) RouterBoard 532 series,
963 based on the IDT RC32434 SoC.
965 config CAVIUM_OCTEON_SOC
966 bool "Cavium Networks Octeon SoC based boards"
968 select ARCH_HAS_PHYS_TO_DMA
970 select PHYS_ADDR_T_64BIT
971 select SYS_SUPPORTS_64BIT_KERNEL
972 select SYS_SUPPORTS_BIG_ENDIAN
974 select EDAC_ATOMIC_SCRUB
975 select SYS_SUPPORTS_LITTLE_ENDIAN
976 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
977 select SYS_HAS_EARLY_PRINTK
978 select SYS_HAS_CPU_CAVIUM_OCTEON
985 select ARCH_SPARSEMEM_ENABLE
986 select SYS_SUPPORTS_SMP
987 select NR_CPUS_DEFAULT_64
988 select MIPS_NR_CPU_NR_MAP_1024
990 select MTD_COMPLEX_MAPPINGS
992 select SYS_SUPPORTS_RELOCATABLE
994 This option supports all of the Octeon reference boards from Cavium
995 Networks. It builds a kernel that dynamically determines the Octeon
996 CPU type and supports all known board reference implementations.
997 Some of the supported boards are:
1004 Say Y here for most Octeon reference boards.
1006 config NLM_XLR_BOARD
1007 bool "Netlogic XLR/XLS based systems"
1010 select SYS_HAS_CPU_XLR
1011 select SYS_SUPPORTS_SMP
1013 select SWAP_IO_SPACE
1014 select SYS_SUPPORTS_32BIT_KERNEL
1015 select SYS_SUPPORTS_64BIT_KERNEL
1016 select PHYS_ADDR_T_64BIT
1017 select SYS_SUPPORTS_BIG_ENDIAN
1018 select SYS_SUPPORTS_HIGHMEM
1019 select NR_CPUS_DEFAULT_32
1023 select ZONE_DMA32 if 64BIT
1025 select SYS_HAS_EARLY_PRINTK
1026 select SYS_SUPPORTS_ZBOOT
1027 select SYS_SUPPORTS_ZBOOT_UART16550
1029 Support for systems based on Netlogic XLR and XLS processors.
1030 Say Y here if you have a XLR or XLS based board.
1032 config NLM_XLP_BOARD
1033 bool "Netlogic XLP based systems"
1036 select SYS_HAS_CPU_XLP
1037 select SYS_SUPPORTS_SMP
1039 select SYS_SUPPORTS_32BIT_KERNEL
1040 select SYS_SUPPORTS_64BIT_KERNEL
1041 select PHYS_ADDR_T_64BIT
1043 select SYS_SUPPORTS_BIG_ENDIAN
1044 select SYS_SUPPORTS_LITTLE_ENDIAN
1045 select SYS_SUPPORTS_HIGHMEM
1046 select NR_CPUS_DEFAULT_32
1050 select ZONE_DMA32 if 64BIT
1052 select SYS_HAS_EARLY_PRINTK
1054 select SYS_SUPPORTS_ZBOOT
1055 select SYS_SUPPORTS_ZBOOT_UART16550
1057 This board is based on Netlogic XLP Processor.
1058 Say Y here if you have a XLP based board.
1060 config MIPS_PARAVIRT
1061 bool "Para-Virtualized guest system"
1064 select SYS_SUPPORTS_64BIT_KERNEL
1065 select SYS_SUPPORTS_32BIT_KERNEL
1066 select SYS_SUPPORTS_BIG_ENDIAN
1067 select SYS_SUPPORTS_SMP
1068 select NR_CPUS_DEFAULT_4
1069 select SYS_HAS_EARLY_PRINTK
1070 select SYS_HAS_CPU_MIPS32_R2
1071 select SYS_HAS_CPU_MIPS64_R2
1072 select SYS_HAS_CPU_CAVIUM_OCTEON
1074 select SWAP_IO_SPACE
1076 This option supports guest running under ????
1080 source "arch/mips/alchemy/Kconfig"
1081 source "arch/mips/ath25/Kconfig"
1082 source "arch/mips/ath79/Kconfig"
1083 source "arch/mips/bcm47xx/Kconfig"
1084 source "arch/mips/bcm63xx/Kconfig"
1085 source "arch/mips/bmips/Kconfig"
1086 source "arch/mips/generic/Kconfig"
1087 source "arch/mips/jazz/Kconfig"
1088 source "arch/mips/jz4740/Kconfig"
1089 source "arch/mips/lantiq/Kconfig"
1090 source "arch/mips/lasat/Kconfig"
1091 source "arch/mips/pic32/Kconfig"
1092 source "arch/mips/pistachio/Kconfig"
1093 source "arch/mips/pmcs-msp71xx/Kconfig"
1094 source "arch/mips/ralink/Kconfig"
1095 source "arch/mips/sgi-ip27/Kconfig"
1096 source "arch/mips/sibyte/Kconfig"
1097 source "arch/mips/txx9/Kconfig"
1098 source "arch/mips/vr41xx/Kconfig"
1099 source "arch/mips/cavium-octeon/Kconfig"
1100 source "arch/mips/loongson2ef/Kconfig"
1101 source "arch/mips/loongson32/Kconfig"
1102 source "arch/mips/loongson64/Kconfig"
1103 source "arch/mips/netlogic/Kconfig"
1104 source "arch/mips/paravirt/Kconfig"
1108 config GENERIC_HWEIGHT
1112 config GENERIC_CALIBRATE_DELAY
1116 config SCHED_OMIT_FRAME_POINTER
1121 # Select some configuration options automatically based on user selections.
1126 config ARCH_MAY_HAVE_PC_FDC
1162 config MIPS_CLOCK_VSYSCALL
1163 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1172 config ARCH_SUPPORTS_UPROBES
1175 config DMA_MAYBE_COHERENT
1176 select ARCH_HAS_DMA_COHERENCE_H
1177 select DMA_NONCOHERENT
1180 config DMA_PERDEV_COHERENT
1182 select ARCH_HAS_SETUP_DMA_OPS
1183 select DMA_NONCOHERENT
1185 config DMA_NONCOHERENT
1188 # MIPS allows mixing "slightly different" Cacheability and Coherency
1189 # Attribute bits. It is believed that the uncached access through
1190 # KSEG1 and the implementation specific "uncached accelerated" used
1191 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1192 # significant advantages.
1194 select ARCH_HAS_DMA_WRITE_COMBINE
1195 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1196 select ARCH_HAS_UNCACHED_SEGMENT
1197 select DMA_NONCOHERENT_MMAP
1198 select DMA_NONCOHERENT_CACHE_SYNC
1199 select NEED_DMA_MAP_STATE
1201 config SYS_HAS_EARLY_PRINTK
1204 config SYS_SUPPORTS_HOTPLUG_CPU
1207 config MIPS_BONITO64
1222 config NO_IOPORT_MAP
1227 default y if !CPU_HAS_LOAD_STORE_LR
1229 config GENERIC_ISA_DMA
1231 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1234 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1236 select GENERIC_ISA_DMA
1241 config HOLES_IN_ZONE
1244 config SYS_SUPPORTS_RELOCATABLE
1247 Selected if the platform supports relocating the kernel.
1248 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1249 to allow access to command line and entropy sources.
1251 config MIPS_CBPF_JIT
1253 depends on BPF_JIT && HAVE_CBPF_JIT
1255 config MIPS_EBPF_JIT
1257 depends on BPF_JIT && HAVE_EBPF_JIT
1261 # Endianness selection. Sufficiently obscure so many users don't know what to
1262 # answer,so we try hard to limit the available choices. Also the use of a
1263 # choice statement should be more obvious to the user.
1266 prompt "Endianness selection"
1268 Some MIPS machines can be configured for either little or big endian
1269 byte order. These modes require different kernels and a different
1270 Linux distribution. In general there is one preferred byteorder for a
1271 particular system but some systems are just as commonly used in the
1272 one or the other endianness.
1274 config CPU_BIG_ENDIAN
1276 depends on SYS_SUPPORTS_BIG_ENDIAN
1278 config CPU_LITTLE_ENDIAN
1279 bool "Little endian"
1280 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1287 config SYS_SUPPORTS_APM_EMULATION
1290 config SYS_SUPPORTS_BIG_ENDIAN
1293 config SYS_SUPPORTS_LITTLE_ENDIAN
1296 config SYS_SUPPORTS_HUGETLBFS
1298 depends on CPU_SUPPORTS_HUGEPAGES
1301 config MIPS_HUGE_TLB_SUPPORT
1302 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1319 config PCI_GT64XXX_PCI0
1322 config PCI_XTALK_BRIDGE
1325 config NO_EXCEPT_FILL
1332 select DMA_NONCOHERENT
1334 select SWAP_IO_SPACE
1335 select SYS_HAS_CPU_R5500
1336 select SYS_SUPPORTS_32BIT_KERNEL
1337 select SYS_SUPPORTS_64BIT_KERNEL
1338 select SYS_SUPPORTS_BIG_ENDIAN
1345 select DMA_NONCOHERENT
1346 select SYS_HAS_CPU_MIPS32_R2
1347 select SYS_SUPPORTS_32BIT_KERNEL
1348 select SYS_SUPPORTS_LITTLE_ENDIAN
1349 select SYS_SUPPORTS_BIG_ENDIAN
1350 select SYS_SUPPORTS_MIPS16
1351 select CPU_MIPSR2_IRQ_VI
1360 config SWAP_IO_SPACE
1363 config SGI_HAS_INDYDOG
1375 config SGI_HAS_ZILOG
1378 config SGI_HAS_I8042
1381 config DEFAULT_SGI_PARTITION
1393 config MIPS_L1_CACHE_SHIFT_4
1396 config MIPS_L1_CACHE_SHIFT_5
1399 config MIPS_L1_CACHE_SHIFT_6
1402 config MIPS_L1_CACHE_SHIFT_7
1405 config MIPS_L1_CACHE_SHIFT
1407 default "7" if MIPS_L1_CACHE_SHIFT_7
1408 default "6" if MIPS_L1_CACHE_SHIFT_6
1409 default "5" if MIPS_L1_CACHE_SHIFT_5
1410 default "4" if MIPS_L1_CACHE_SHIFT_4
1413 config HAVE_STD_PC_SERIAL_PORT
1416 config ARC_CMDLINE_ONLY
1420 bool "ARC console support"
1421 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1435 menu "CPU selection"
1441 config CPU_LOONGSON64
1442 bool "Loongson 64-bit CPU"
1443 depends on SYS_HAS_CPU_LOONGSON64
1444 select ARCH_HAS_PHYS_TO_DMA
1445 select CPU_SUPPORTS_64BIT_KERNEL
1446 select CPU_SUPPORTS_HIGHMEM
1447 select CPU_SUPPORTS_HUGEPAGES
1448 select CPU_SUPPORTS_MSA
1449 select CPU_HAS_LOAD_STORE_LR
1450 select WEAK_ORDERING
1451 select WEAK_REORDERING_BEYOND_LLSC
1452 select MIPS_ASID_BITS_VARIABLE
1453 select MIPS_PGD_C0_CONTEXT
1454 select MIPS_L1_CACHE_SHIFT_6
1458 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1459 cores implements the MIPS64R2 instruction set with many extensions,
1460 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1461 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1462 Loongson-2E/2F is not covered here and will be removed in future.
1464 config LOONGSON3_ENHANCEMENT
1465 bool "New Loongson-3 CPU Enhancements"
1468 select CPU_HAS_PREFETCH
1469 depends on CPU_LOONGSON64
1471 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1472 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1473 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1474 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1475 Fast TLB refill support, etc.
1477 This option enable those enhancements which are not probed at run
1478 time. If you want a generic kernel to run on all Loongson 3 machines,
1479 please say 'N' here. If you want a high-performance kernel to run on
1480 new Loongson-3 machines only, please say 'Y' here.
1482 config CPU_LOONGSON3_WORKAROUNDS
1483 bool "Old Loongson-3 LLSC Workarounds"
1485 depends on CPU_LOONGSON64
1487 Loongson-3 processors have the llsc issues which require workarounds.
1488 Without workarounds the system may hang unexpectedly.
1490 Newer Loongson-3 will fix these issues and no workarounds are needed.
1491 The workarounds have no significant side effect on them but may
1492 decrease the performance of the system so this option should be
1493 disabled unless the kernel is intended to be run on old systems.
1495 If unsure, please say Y.
1497 config CPU_LOONGSON2E
1499 depends on SYS_HAS_CPU_LOONGSON2E
1500 select CPU_LOONGSON2EF
1502 The Loongson 2E processor implements the MIPS III instruction set
1503 with many extensions.
1505 It has an internal FPGA northbridge, which is compatible to
1508 config CPU_LOONGSON2F
1510 depends on SYS_HAS_CPU_LOONGSON2F
1511 select CPU_LOONGSON2EF
1514 The Loongson 2F processor implements the MIPS III instruction set
1515 with many extensions.
1517 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1518 have a similar programming interface with FPGA northbridge used in
1521 config CPU_LOONGSON1B
1523 depends on SYS_HAS_CPU_LOONGSON1B
1524 select CPU_LOONGSON32
1525 select LEDS_GPIO_REGISTER
1527 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1528 Release 1 instruction set and part of the MIPS32 Release 2
1531 config CPU_LOONGSON1C
1533 depends on SYS_HAS_CPU_LOONGSON1C
1534 select CPU_LOONGSON32
1535 select LEDS_GPIO_REGISTER
1537 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1538 Release 1 instruction set and part of the MIPS32 Release 2
1541 config CPU_MIPS32_R1
1542 bool "MIPS32 Release 1"
1543 depends on SYS_HAS_CPU_MIPS32_R1
1544 select CPU_HAS_PREFETCH
1545 select CPU_HAS_LOAD_STORE_LR
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_HIGHMEM
1549 Choose this option to build a kernel for release 1 or later of the
1550 MIPS32 architecture. Most modern embedded systems with a 32-bit
1551 MIPS processor are based on a MIPS32 processor. If you know the
1552 specific type of processor in your system, choose those that one
1553 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1554 Release 2 of the MIPS32 architecture is available since several
1555 years so chances are you even have a MIPS32 Release 2 processor
1556 in which case you should choose CPU_MIPS32_R2 instead for better
1559 config CPU_MIPS32_R2
1560 bool "MIPS32 Release 2"
1561 depends on SYS_HAS_CPU_MIPS32_R2
1562 select CPU_HAS_PREFETCH
1563 select CPU_HAS_LOAD_STORE_LR
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_HIGHMEM
1566 select CPU_SUPPORTS_MSA
1569 Choose this option to build a kernel for release 2 or later of the
1570 MIPS32 architecture. Most modern embedded systems with a 32-bit
1571 MIPS processor are based on a MIPS32 processor. If you know the
1572 specific type of processor in your system, choose those that one
1573 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1575 config CPU_MIPS32_R6
1576 bool "MIPS32 Release 6"
1577 depends on SYS_HAS_CPU_MIPS32_R6
1578 select CPU_HAS_PREFETCH
1579 select CPU_SUPPORTS_32BIT_KERNEL
1580 select CPU_SUPPORTS_HIGHMEM
1581 select CPU_SUPPORTS_MSA
1583 select MIPS_O32_FP64_SUPPORT
1585 Choose this option to build a kernel for release 6 or later of the
1586 MIPS32 architecture. New MIPS processors, starting with the Warrior
1587 family, are based on a MIPS32r6 processor. If you own an older
1588 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1590 config CPU_MIPS64_R1
1591 bool "MIPS64 Release 1"
1592 depends on SYS_HAS_CPU_MIPS64_R1
1593 select CPU_HAS_PREFETCH
1594 select CPU_HAS_LOAD_STORE_LR
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HIGHMEM
1598 select CPU_SUPPORTS_HUGEPAGES
1600 Choose this option to build a kernel for release 1 or later of the
1601 MIPS64 architecture. Many modern embedded systems with a 64-bit
1602 MIPS processor are based on a MIPS64 processor. If you know the
1603 specific type of processor in your system, choose those that one
1604 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1605 Release 2 of the MIPS64 architecture is available since several
1606 years so chances are you even have a MIPS64 Release 2 processor
1607 in which case you should choose CPU_MIPS64_R2 instead for better
1610 config CPU_MIPS64_R2
1611 bool "MIPS64 Release 2"
1612 depends on SYS_HAS_CPU_MIPS64_R2
1613 select CPU_HAS_PREFETCH
1614 select CPU_HAS_LOAD_STORE_LR
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HIGHMEM
1618 select CPU_SUPPORTS_HUGEPAGES
1619 select CPU_SUPPORTS_MSA
1622 Choose this option to build a kernel for release 2 or later of the
1623 MIPS64 architecture. Many modern embedded systems with a 64-bit
1624 MIPS processor are based on a MIPS64 processor. If you know the
1625 specific type of processor in your system, choose those that one
1626 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1628 config CPU_MIPS64_R6
1629 bool "MIPS64 Release 6"
1630 depends on SYS_HAS_CPU_MIPS64_R6
1631 select CPU_HAS_PREFETCH
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1634 select CPU_SUPPORTS_HIGHMEM
1635 select CPU_SUPPORTS_HUGEPAGES
1636 select CPU_SUPPORTS_MSA
1637 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1640 Choose this option to build a kernel for release 6 or later of the
1641 MIPS64 architecture. New MIPS processors, starting with the Warrior
1642 family, are based on a MIPS64r6 processor. If you own an older
1643 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1647 depends on SYS_HAS_CPU_R3000
1649 select CPU_HAS_LOAD_STORE_LR
1651 select CPU_SUPPORTS_32BIT_KERNEL
1652 select CPU_SUPPORTS_HIGHMEM
1654 Please make sure to pick the right CPU type. Linux/MIPS is not
1655 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1656 *not* work on R4000 machines and vice versa. However, since most
1657 of the supported machines have an R4000 (or similar) CPU, R4x00
1658 might be a safe bet. If the resulting kernel does not work,
1659 try to recompile with R3000.
1663 depends on SYS_HAS_CPU_TX39XX
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_HAS_LOAD_STORE_LR
1670 depends on SYS_HAS_CPU_VR41XX
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_HAS_LOAD_STORE_LR
1675 The options selects support for the NEC VR4100 series of processors.
1676 Only choose this option if you have one of these processors as a
1677 kernel built with this option will not run on any other type of
1678 processor or vice versa.
1682 depends on SYS_HAS_CPU_R4X00
1683 select CPU_SUPPORTS_32BIT_KERNEL
1684 select CPU_SUPPORTS_64BIT_KERNEL
1685 select CPU_SUPPORTS_HUGEPAGES
1686 select CPU_HAS_LOAD_STORE_LR
1688 MIPS Technologies R4000-series processors other than 4300, including
1689 the R4000, R4400, R4600, and 4700.
1693 depends on SYS_HAS_CPU_TX49XX
1694 select CPU_HAS_PREFETCH
1695 select CPU_HAS_LOAD_STORE_LR
1696 select CPU_SUPPORTS_32BIT_KERNEL
1697 select CPU_SUPPORTS_64BIT_KERNEL
1698 select CPU_SUPPORTS_HUGEPAGES
1702 depends on SYS_HAS_CPU_R5000
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select CPU_SUPPORTS_64BIT_KERNEL
1705 select CPU_SUPPORTS_HUGEPAGES
1706 select CPU_HAS_LOAD_STORE_LR
1708 MIPS Technologies R5000-series processors other than the Nevada.
1712 depends on SYS_HAS_CPU_R5500
1713 select CPU_SUPPORTS_32BIT_KERNEL
1714 select CPU_SUPPORTS_64BIT_KERNEL
1715 select CPU_SUPPORTS_HUGEPAGES
1716 select CPU_HAS_LOAD_STORE_LR
1718 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1723 depends on SYS_HAS_CPU_NEVADA
1724 select CPU_SUPPORTS_32BIT_KERNEL
1725 select CPU_SUPPORTS_64BIT_KERNEL
1726 select CPU_SUPPORTS_HUGEPAGES
1727 select CPU_HAS_LOAD_STORE_LR
1729 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1733 depends on SYS_HAS_CPU_R10000
1734 select CPU_HAS_PREFETCH
1735 select CPU_HAS_LOAD_STORE_LR
1736 select CPU_SUPPORTS_32BIT_KERNEL
1737 select CPU_SUPPORTS_64BIT_KERNEL
1738 select CPU_SUPPORTS_HIGHMEM
1739 select CPU_SUPPORTS_HUGEPAGES
1741 MIPS Technologies R10000-series processors.
1745 depends on SYS_HAS_CPU_RM7000
1746 select CPU_HAS_PREFETCH
1747 select CPU_HAS_LOAD_STORE_LR
1748 select CPU_SUPPORTS_32BIT_KERNEL
1749 select CPU_SUPPORTS_64BIT_KERNEL
1750 select CPU_SUPPORTS_HIGHMEM
1751 select CPU_SUPPORTS_HUGEPAGES
1755 depends on SYS_HAS_CPU_SB1
1756 select CPU_HAS_LOAD_STORE_LR
1757 select CPU_SUPPORTS_32BIT_KERNEL
1758 select CPU_SUPPORTS_64BIT_KERNEL
1759 select CPU_SUPPORTS_HIGHMEM
1760 select CPU_SUPPORTS_HUGEPAGES
1761 select WEAK_ORDERING
1763 config CPU_CAVIUM_OCTEON
1764 bool "Cavium Octeon processor"
1765 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1766 select CPU_HAS_PREFETCH
1767 select CPU_HAS_LOAD_STORE_LR
1768 select CPU_SUPPORTS_64BIT_KERNEL
1769 select WEAK_ORDERING
1770 select CPU_SUPPORTS_HIGHMEM
1771 select CPU_SUPPORTS_HUGEPAGES
1772 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1773 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1774 select MIPS_L1_CACHE_SHIFT_7
1777 The Cavium Octeon processor is a highly integrated chip containing
1778 many ethernet hardware widgets for networking tasks. The processor
1779 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1780 Full details can be found at http://www.caviumnetworks.com.
1783 bool "Broadcom BMIPS"
1784 depends on SYS_HAS_CPU_BMIPS
1786 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1787 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1788 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1789 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1790 select CPU_SUPPORTS_32BIT_KERNEL
1791 select DMA_NONCOHERENT
1793 select SWAP_IO_SPACE
1794 select WEAK_ORDERING
1795 select CPU_SUPPORTS_HIGHMEM
1796 select CPU_HAS_PREFETCH
1797 select CPU_HAS_LOAD_STORE_LR
1798 select CPU_SUPPORTS_CPUFREQ
1799 select MIPS_EXTERNAL_TIMER
1801 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1804 bool "Netlogic XLR SoC"
1805 depends on SYS_HAS_CPU_XLR
1806 select CPU_HAS_LOAD_STORE_LR
1807 select CPU_SUPPORTS_32BIT_KERNEL
1808 select CPU_SUPPORTS_64BIT_KERNEL
1809 select CPU_SUPPORTS_HIGHMEM
1810 select CPU_SUPPORTS_HUGEPAGES
1811 select WEAK_ORDERING
1812 select WEAK_REORDERING_BEYOND_LLSC
1814 Netlogic Microsystems XLR/XLS processors.
1817 bool "Netlogic XLP SoC"
1818 depends on SYS_HAS_CPU_XLP
1819 select CPU_SUPPORTS_32BIT_KERNEL
1820 select CPU_SUPPORTS_64BIT_KERNEL
1821 select CPU_SUPPORTS_HIGHMEM
1822 select WEAK_ORDERING
1823 select WEAK_REORDERING_BEYOND_LLSC
1824 select CPU_HAS_PREFETCH
1825 select CPU_HAS_LOAD_STORE_LR
1827 select CPU_SUPPORTS_HUGEPAGES
1828 select MIPS_ASID_BITS_VARIABLE
1830 Netlogic Microsystems XLP processors.
1833 config CPU_MIPS32_3_5_FEATURES
1834 bool "MIPS32 Release 3.5 Features"
1835 depends on SYS_HAS_CPU_MIPS32_R3_5
1836 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1838 Choose this option to build a kernel for release 2 or later of the
1839 MIPS32 architecture including features from the 3.5 release such as
1840 support for Enhanced Virtual Addressing (EVA).
1842 config CPU_MIPS32_3_5_EVA
1843 bool "Enhanced Virtual Addressing (EVA)"
1844 depends on CPU_MIPS32_3_5_FEATURES
1848 Choose this option if you want to enable the Enhanced Virtual
1849 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1850 One of its primary benefits is an increase in the maximum size
1851 of lowmem (up to 3GB). If unsure, say 'N' here.
1853 config CPU_MIPS32_R5_FEATURES
1854 bool "MIPS32 Release 5 Features"
1855 depends on SYS_HAS_CPU_MIPS32_R5
1856 depends on CPU_MIPS32_R2
1858 Choose this option to build a kernel for release 2 or later of the
1859 MIPS32 architecture including features from release 5 such as
1860 support for Extended Physical Addressing (XPA).
1862 config CPU_MIPS32_R5_XPA
1863 bool "Extended Physical Addressing (XPA)"
1864 depends on CPU_MIPS32_R5_FEATURES
1866 depends on !PAGE_SIZE_4KB
1867 depends on SYS_SUPPORTS_HIGHMEM
1870 select PHYS_ADDR_T_64BIT
1873 Choose this option if you want to enable the Extended Physical
1874 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1875 benefit is to increase physical addressing equal to or greater
1876 than 40 bits. Note that this has the side effect of turning on
1877 64-bit addressing which in turn makes the PTEs 64-bit in size.
1878 If unsure, say 'N' here.
1881 config CPU_NOP_WORKAROUNDS
1884 config CPU_JUMP_WORKAROUNDS
1887 config CPU_LOONGSON2F_WORKAROUNDS
1888 bool "Loongson 2F Workarounds"
1890 select CPU_NOP_WORKAROUNDS
1891 select CPU_JUMP_WORKAROUNDS
1893 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1894 require workarounds. Without workarounds the system may hang
1895 unexpectedly. For more information please refer to the gas
1896 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1898 Loongson 2F03 and later have fixed these issues and no workarounds
1899 are needed. The workarounds have no significant side effect on them
1900 but may decrease the performance of the system so this option should
1901 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1904 If unsure, please say Y.
1905 endif # CPU_LOONGSON2F
1907 config SYS_SUPPORTS_ZBOOT
1909 select HAVE_KERNEL_GZIP
1910 select HAVE_KERNEL_BZIP2
1911 select HAVE_KERNEL_LZ4
1912 select HAVE_KERNEL_LZMA
1913 select HAVE_KERNEL_LZO
1914 select HAVE_KERNEL_XZ
1916 config SYS_SUPPORTS_ZBOOT_UART16550
1918 select SYS_SUPPORTS_ZBOOT
1920 config SYS_SUPPORTS_ZBOOT_UART_PROM
1922 select SYS_SUPPORTS_ZBOOT
1924 config CPU_LOONGSON2EF
1926 select CPU_SUPPORTS_32BIT_KERNEL
1927 select CPU_SUPPORTS_64BIT_KERNEL
1928 select CPU_SUPPORTS_HIGHMEM
1929 select CPU_SUPPORTS_HUGEPAGES
1930 select ARCH_HAS_PHYS_TO_DMA
1931 select CPU_HAS_LOAD_STORE_LR
1933 config CPU_LOONGSON32
1937 select CPU_HAS_PREFETCH
1938 select CPU_HAS_LOAD_STORE_LR
1939 select CPU_SUPPORTS_32BIT_KERNEL
1940 select CPU_SUPPORTS_HIGHMEM
1941 select CPU_SUPPORTS_CPUFREQ
1943 config CPU_BMIPS32_3300
1944 select SMP_UP if SMP
1947 config CPU_BMIPS4350
1949 select SYS_SUPPORTS_SMP
1950 select SYS_SUPPORTS_HOTPLUG_CPU
1952 config CPU_BMIPS4380
1954 select MIPS_L1_CACHE_SHIFT_6
1955 select SYS_SUPPORTS_SMP
1956 select SYS_SUPPORTS_HOTPLUG_CPU
1959 config CPU_BMIPS5000
1961 select MIPS_CPU_SCACHE
1962 select MIPS_L1_CACHE_SHIFT_7
1963 select SYS_SUPPORTS_SMP
1964 select SYS_SUPPORTS_HOTPLUG_CPU
1967 config SYS_HAS_CPU_LOONGSON64
1969 select CPU_SUPPORTS_CPUFREQ
1972 config SYS_HAS_CPU_LOONGSON2E
1975 config SYS_HAS_CPU_LOONGSON2F
1977 select CPU_SUPPORTS_CPUFREQ
1978 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1980 config SYS_HAS_CPU_LOONGSON1B
1983 config SYS_HAS_CPU_LOONGSON1C
1986 config SYS_HAS_CPU_MIPS32_R1
1989 config SYS_HAS_CPU_MIPS32_R2
1992 config SYS_HAS_CPU_MIPS32_R3_5
1995 config SYS_HAS_CPU_MIPS32_R5
1997 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1999 config SYS_HAS_CPU_MIPS32_R6
2001 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2003 config SYS_HAS_CPU_MIPS64_R1
2006 config SYS_HAS_CPU_MIPS64_R2
2009 config SYS_HAS_CPU_MIPS64_R6
2011 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2013 config SYS_HAS_CPU_R3000
2016 config SYS_HAS_CPU_TX39XX
2019 config SYS_HAS_CPU_VR41XX
2022 config SYS_HAS_CPU_R4X00
2025 config SYS_HAS_CPU_TX49XX
2028 config SYS_HAS_CPU_R5000
2031 config SYS_HAS_CPU_R5500
2034 config SYS_HAS_CPU_NEVADA
2037 config SYS_HAS_CPU_R10000
2039 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2041 config SYS_HAS_CPU_RM7000
2044 config SYS_HAS_CPU_SB1
2047 config SYS_HAS_CPU_CAVIUM_OCTEON
2050 config SYS_HAS_CPU_BMIPS
2053 config SYS_HAS_CPU_BMIPS32_3300
2055 select SYS_HAS_CPU_BMIPS
2057 config SYS_HAS_CPU_BMIPS4350
2059 select SYS_HAS_CPU_BMIPS
2061 config SYS_HAS_CPU_BMIPS4380
2063 select SYS_HAS_CPU_BMIPS
2065 config SYS_HAS_CPU_BMIPS5000
2067 select SYS_HAS_CPU_BMIPS
2068 select ARCH_HAS_SYNC_DMA_FOR_CPU
2070 config SYS_HAS_CPU_XLR
2073 config SYS_HAS_CPU_XLP
2077 # CPU may reorder R->R, R->W, W->R, W->W
2078 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2080 config WEAK_ORDERING
2084 # CPU may reorder reads and writes beyond LL/SC
2085 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2087 config WEAK_REORDERING_BEYOND_LLSC
2092 # These two indicate any level of the MIPS32 and MIPS64 architecture
2096 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2100 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2103 # These indicate the revision of the architecture
2107 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2111 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2117 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2119 select HAVE_ARCH_BITREVERSE
2120 select MIPS_ASID_BITS_VARIABLE
2121 select MIPS_CRC_SUPPORT
2124 config TARGET_ISA_REV
2126 default 1 if CPU_MIPSR1
2127 default 2 if CPU_MIPSR2
2128 default 6 if CPU_MIPSR6
2131 Reflects the ISA revision being targeted by the kernel build. This
2132 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2140 config SYS_SUPPORTS_32BIT_KERNEL
2142 config SYS_SUPPORTS_64BIT_KERNEL
2144 config CPU_SUPPORTS_32BIT_KERNEL
2146 config CPU_SUPPORTS_64BIT_KERNEL
2148 config CPU_SUPPORTS_CPUFREQ
2150 config CPU_SUPPORTS_ADDRWINCFG
2152 config CPU_SUPPORTS_HUGEPAGES
2154 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2155 config MIPS_PGD_C0_CONTEXT
2157 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2160 # Set to y for ptrace access to watch registers.
2162 config HARDWARE_WATCHPOINTS
2164 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2169 prompt "Kernel code model"
2171 You should only select this option if you have a workload that
2172 actually benefits from 64-bit processing or if your machine has
2173 large memory. You will only be presented a single option in this
2174 menu if your system does not support both 32-bit and 64-bit kernels.
2177 bool "32-bit kernel"
2178 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2181 Select this option if you want to build a 32-bit kernel.
2184 bool "64-bit kernel"
2185 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2187 Select this option if you want to build a 64-bit kernel.
2192 bool "KVM Guest Kernel"
2193 depends on BROKEN_ON_SMP
2195 Select this option if building a guest kernel for KVM (Trap & Emulate)
2198 config KVM_GUEST_TIMER_FREQ
2199 int "Count/Compare Timer Frequency (MHz)"
2200 depends on KVM_GUEST
2203 Set this to non-zero if building a guest kernel for KVM to skip RTC
2204 emulation when determining guest CPU Frequency. Instead, the guest's
2205 timer frequency is specified directly.
2207 config MIPS_VA_BITS_48
2208 bool "48 bits virtual memory"
2211 Support a maximum at least 48 bits of application virtual
2212 memory. Default is 40 bits or less, depending on the CPU.
2213 For page sizes 16k and above, this option results in a small
2214 memory overhead for page tables. For 4k page size, a fourth
2215 level of page tables is added which imposes both a memory
2216 overhead as well as slower TLB fault handling.
2221 prompt "Kernel page size"
2222 default PAGE_SIZE_4KB
2224 config PAGE_SIZE_4KB
2226 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2228 This option select the standard 4kB Linux page size. On some
2229 R3000-family processors this is the only available page size. Using
2230 4kB page size will minimize memory consumption and is therefore
2231 recommended for low memory systems.
2233 config PAGE_SIZE_8KB
2235 depends on CPU_CAVIUM_OCTEON
2236 depends on !MIPS_VA_BITS_48
2238 Using 8kB page size will result in higher performance kernel at
2239 the price of higher memory consumption. This option is available
2240 only on cnMIPS processors. Note that you will need a suitable Linux
2241 distribution to support this.
2243 config PAGE_SIZE_16KB
2245 depends on !CPU_R3000 && !CPU_TX39XX
2247 Using 16kB page size will result in higher performance kernel at
2248 the price of higher memory consumption. This option is available on
2249 all non-R3000 family processors. Note that you will need a suitable
2250 Linux distribution to support this.
2252 config PAGE_SIZE_32KB
2254 depends on CPU_CAVIUM_OCTEON
2255 depends on !MIPS_VA_BITS_48
2257 Using 32kB page size will result in higher performance kernel at
2258 the price of higher memory consumption. This option is available
2259 only on cnMIPS cores. Note that you will need a suitable Linux
2260 distribution to support this.
2262 config PAGE_SIZE_64KB
2264 depends on !CPU_R3000 && !CPU_TX39XX
2266 Using 64kB page size will result in higher performance kernel at
2267 the price of higher memory consumption. This option is available on
2268 all non-R3000 family processor. Not that at the time of this
2269 writing this option is still high experimental.
2273 config FORCE_MAX_ZONEORDER
2274 int "Maximum zone order"
2275 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2276 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2277 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2278 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2279 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2280 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2284 The kernel memory allocator divides physically contiguous memory
2285 blocks into "zones", where each zone is a power of two number of
2286 pages. This option selects the largest power of two that the kernel
2287 keeps in the memory allocator. If you need to allocate very large
2288 blocks of physically contiguous memory, then you may need to
2289 increase this value.
2291 This config option is actually maximum order plus one. For example,
2292 a value of 11 means that the largest free memory block is 2^10 pages.
2294 The page size is not necessarily 4KB. Keep this in mind
2295 when choosing a value for this option.
2300 config IP22_CPU_SCACHE
2305 # Support for a MIPS32 / MIPS64 style S-caches
2307 config MIPS_CPU_SCACHE
2311 config R5000_CPU_SCACHE
2315 config RM7000_CPU_SCACHE
2319 config SIBYTE_DMA_PAGEOPS
2320 bool "Use DMA to clear/copy pages"
2323 Instead of using the CPU to zero and copy pages, use a Data Mover
2324 channel. These DMA channels are otherwise unused by the standard
2325 SiByte Linux port. Seems to give a small performance benefit.
2327 config CPU_HAS_PREFETCH
2330 config CPU_GENERIC_DUMP_TLB
2332 default y if !(CPU_R3000 || CPU_TX39XX)
2334 config MIPS_FP_SUPPORT
2335 bool "Floating Point support" if EXPERT
2338 Select y to include support for floating point in the kernel
2339 including initialization of FPU hardware, FP context save & restore
2340 and emulation of an FPU where necessary. Without this support any
2341 userland program attempting to use floating point instructions will
2344 If you know that your userland will not attempt to use floating point
2345 instructions then you can say n here to shrink the kernel a little.
2349 config CPU_R2300_FPU
2351 depends on MIPS_FP_SUPPORT
2352 default y if CPU_R3000 || CPU_TX39XX
2359 depends on MIPS_FP_SUPPORT
2360 default y if !CPU_R2300_FPU
2362 config CPU_R4K_CACHE_TLB
2364 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2367 bool "MIPS MT SMP support (1 TC on each available VPE)"
2369 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2370 select CPU_MIPSR2_IRQ_VI
2371 select CPU_MIPSR2_IRQ_EI
2376 select SYS_SUPPORTS_SMP
2377 select SYS_SUPPORTS_SCHED_SMT
2378 select MIPS_PERF_SHARED_TC_COUNTERS
2380 This is a kernel model which is known as SMVP. This is supported
2381 on cores with the MT ASE and uses the available VPEs to implement
2382 virtual processors which supports SMP. This is equivalent to the
2383 Intel Hyperthreading feature. For further information go to
2384 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2390 bool "SMT (multithreading) scheduler support"
2391 depends on SYS_SUPPORTS_SCHED_SMT
2394 SMT scheduler support improves the CPU scheduler's decision making
2395 when dealing with MIPS MT enabled cores at a cost of slightly
2396 increased overhead in some places. If unsure say N here.
2398 config SYS_SUPPORTS_SCHED_SMT
2401 config SYS_SUPPORTS_MULTITHREADING
2404 config MIPS_MT_FPAFF
2405 bool "Dynamic FPU affinity for FP-intensive threads"
2407 depends on MIPS_MT_SMP
2409 config MIPSR2_TO_R6_EMULATOR
2410 bool "MIPS R2-to-R6 emulator"
2411 depends on CPU_MIPSR6
2412 depends on MIPS_FP_SUPPORT
2415 Choose this option if you want to run non-R6 MIPS userland code.
2416 Even if you say 'Y' here, the emulator will still be disabled by
2417 default. You can enable it using the 'mipsr2emu' kernel option.
2418 The only reason this is a build-time option is to save ~14K from the
2421 config SYS_SUPPORTS_VPE_LOADER
2423 depends on SYS_SUPPORTS_MULTITHREADING
2425 Indicates that the platform supports the VPE loader, and provides
2428 config MIPS_VPE_LOADER
2429 bool "VPE loader support."
2430 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2431 select CPU_MIPSR2_IRQ_VI
2432 select CPU_MIPSR2_IRQ_EI
2435 Includes a loader for loading an elf relocatable object
2436 onto another VPE and running it.
2438 config MIPS_VPE_LOADER_CMP
2441 depends on MIPS_VPE_LOADER && MIPS_CMP
2443 config MIPS_VPE_LOADER_MT
2446 depends on MIPS_VPE_LOADER && !MIPS_CMP
2448 config MIPS_VPE_LOADER_TOM
2449 bool "Load VPE program into memory hidden from linux"
2450 depends on MIPS_VPE_LOADER
2453 The loader can use memory that is present but has been hidden from
2454 Linux using the kernel command line option "mem=xxMB". It's up to
2455 you to ensure the amount you put in the option and the space your
2456 program requires is less or equal to the amount physically present.
2458 config MIPS_VPE_APSP_API
2459 bool "Enable support for AP/SP API (RTLX)"
2460 depends on MIPS_VPE_LOADER
2462 config MIPS_VPE_APSP_API_CMP
2465 depends on MIPS_VPE_APSP_API && MIPS_CMP
2467 config MIPS_VPE_APSP_API_MT
2470 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2473 bool "MIPS CMP framework support (DEPRECATED)"
2474 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2477 select SYS_SUPPORTS_SMP
2478 select WEAK_ORDERING
2481 Select this if you are using a bootloader which implements the "CMP
2482 framework" protocol (ie. YAMON) and want your kernel to make use of
2483 its ability to start secondary CPUs.
2485 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2489 bool "MIPS Coherent Processing System support"
2490 depends on SYS_SUPPORTS_MIPS_CPS
2492 select MIPS_CPS_PM if HOTPLUG_CPU
2494 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2495 select SYS_SUPPORTS_HOTPLUG_CPU
2496 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2497 select SYS_SUPPORTS_SMP
2498 select WEAK_ORDERING
2500 Select this if you wish to run an SMP kernel across multiple cores
2501 within a MIPS Coherent Processing System. When this option is
2502 enabled the kernel will probe for other cores and boot them with
2503 no external assistance. It is safe to enable this when hardware
2504 support is unavailable.
2517 config SB1_PASS_2_WORKAROUNDS
2519 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2522 config SB1_PASS_2_1_WORKAROUNDS
2524 depends on CPU_SB1 && CPU_SB1_PASS_2
2528 prompt "SmartMIPS or microMIPS ASE support"
2530 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2533 Select this if you want neither microMIPS nor SmartMIPS support
2535 config CPU_HAS_SMARTMIPS
2536 depends on SYS_SUPPORTS_SMARTMIPS
2539 SmartMIPS is a extension of the MIPS32 architecture aimed at
2540 increased security at both hardware and software level for
2541 smartcards. Enabling this option will allow proper use of the
2542 SmartMIPS instructions by Linux applications. However a kernel with
2543 this option will not work on a MIPS core without SmartMIPS core. If
2544 you don't know you probably don't have SmartMIPS and should say N
2547 config CPU_MICROMIPS
2548 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2551 When this option is enabled the kernel will be built using the
2557 bool "Support for the MIPS SIMD Architecture"
2558 depends on CPU_SUPPORTS_MSA
2559 depends on MIPS_FP_SUPPORT
2560 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2562 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2563 and a set of SIMD instructions to operate on them. When this option
2564 is enabled the kernel will support allocating & switching MSA
2565 vector register contexts. If you know that your kernel will only be
2566 running on CPUs which do not support MSA or that your userland will
2567 not be making use of it then you may wish to say N here to reduce
2568 the size & complexity of your kernel.
2581 config CPU_HAS_LOAD_STORE_LR
2584 CPU has support for unaligned load and store instructions:
2585 LWL, LWR, SWL, SWR (Load/store word left/right).
2586 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2589 # Vectored interrupt mode is an R2 feature
2591 config CPU_MIPSR2_IRQ_VI
2595 # Extended interrupt mode is an R2 feature
2597 config CPU_MIPSR2_IRQ_EI
2602 depends on !CPU_R3000
2608 config CPU_DADDI_WORKAROUNDS
2611 config CPU_R4000_WORKAROUNDS
2613 select CPU_R4400_WORKAROUNDS
2615 config CPU_R4400_WORKAROUNDS
2618 config CPU_R4X00_BUGS64
2620 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2622 config MIPS_ASID_SHIFT
2624 default 6 if CPU_R3000 || CPU_TX39XX
2627 config MIPS_ASID_BITS
2629 default 0 if MIPS_ASID_BITS_VARIABLE
2630 default 6 if CPU_R3000 || CPU_TX39XX
2633 config MIPS_ASID_BITS_VARIABLE
2636 config MIPS_CRC_SUPPORT
2640 # - Highmem only makes sense for the 32-bit kernel.
2641 # - The current highmem code will only work properly on physically indexed
2642 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2643 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2644 # moment we protect the user and offer the highmem option only on machines
2645 # where it's known to be safe. This will not offer highmem on a few systems
2646 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2647 # indexed CPUs but we're playing safe.
2648 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2649 # know they might have memory configurations that could make use of highmem
2653 bool "High Memory Support"
2654 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2656 config CPU_SUPPORTS_HIGHMEM
2659 config SYS_SUPPORTS_HIGHMEM
2662 config SYS_SUPPORTS_SMARTMIPS
2665 config SYS_SUPPORTS_MICROMIPS
2668 config SYS_SUPPORTS_MIPS16
2671 This option must be set if a kernel might be executed on a MIPS16-
2672 enabled CPU even if MIPS16 is not actually being used. In other
2673 words, it makes the kernel MIPS16-tolerant.
2675 config CPU_SUPPORTS_MSA
2678 config ARCH_FLATMEM_ENABLE
2680 depends on !NUMA && !CPU_LOONGSON2EF
2682 config ARCH_SPARSEMEM_ENABLE
2684 select SPARSEMEM_STATIC if !SGI_IP27
2688 depends on SYS_SUPPORTS_NUMA
2690 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2691 Access). This option improves performance on systems with more
2692 than two nodes; on two node systems it is generally better to
2693 leave it disabled; on single node systems disable this option
2696 config SYS_SUPPORTS_NUMA
2700 bool "Relocatable kernel"
2701 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2703 This builds a kernel image that retains relocation information
2704 so it can be loaded someplace besides the default 1MB.
2705 The relocations make the kernel binary about 15% larger,
2706 but are discarded at runtime
2708 config RELOCATION_TABLE_SIZE
2709 hex "Relocation table size"
2710 depends on RELOCATABLE
2711 range 0x0 0x01000000
2712 default "0x00100000"
2714 A table of relocation data will be appended to the kernel binary
2715 and parsed at boot to fix up the relocated kernel.
2717 This option allows the amount of space reserved for the table to be
2718 adjusted, although the default of 1Mb should be ok in most cases.
2720 The build will fail and a valid size suggested if this is too small.
2722 If unsure, leave at the default value.
2724 config RANDOMIZE_BASE
2725 bool "Randomize the address of the kernel image"
2726 depends on RELOCATABLE
2728 Randomizes the physical and virtual address at which the
2729 kernel image is loaded, as a security feature that
2730 deters exploit attempts relying on knowledge of the location
2731 of kernel internals.
2733 Entropy is generated using any coprocessor 0 registers available.
2735 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2739 config RANDOMIZE_BASE_MAX_OFFSET
2740 hex "Maximum kASLR offset" if EXPERT
2741 depends on RANDOMIZE_BASE
2742 range 0x0 0x40000000 if EVA || 64BIT
2743 range 0x0 0x08000000
2744 default "0x01000000"
2746 When kASLR is active, this provides the maximum offset that will
2747 be applied to the kernel image. It should be set according to the
2748 amount of physical RAM available in the target system minus
2749 PHYSICAL_START and must be a power of 2.
2751 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2752 EVA or 64-bit. The default is 16Mb.
2757 depends on NEED_MULTIPLE_NODES
2759 config HW_PERF_EVENTS
2760 bool "Enable hardware performance counter support for perf events"
2761 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2764 Enable hardware performance counter support for perf events. If
2765 disabled, perf events will use software events only.
2768 bool "Multi-Processing support"
2769 depends on SYS_SUPPORTS_SMP
2771 This enables support for systems with more than one CPU. If you have
2772 a system with only one CPU, say N. If you have a system with more
2773 than one CPU, say Y.
2775 If you say N here, the kernel will run on uni- and multiprocessor
2776 machines, but will use only one CPU of a multiprocessor machine. If
2777 you say Y here, the kernel will run on many, but not all,
2778 uniprocessor machines. On a uniprocessor machine, the kernel
2779 will run faster if you say N here.
2781 People using multiprocessor machines who say Y here should also say
2782 Y to "Enhanced Real Time Clock Support", below.
2784 See also the SMP-HOWTO available at
2785 <http://www.tldp.org/docs.html#howto>.
2787 If you don't know what to do here, say N.
2790 bool "Support for hot-pluggable CPUs"
2791 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2793 Say Y here to allow turning CPUs off and on. CPUs can be
2794 controlled through /sys/devices/system/cpu.
2795 (Note: power management support will enable this option
2796 automatically on SMP systems. )
2797 Say N if you want to disable CPU hotplug.
2802 config SYS_SUPPORTS_MIPS_CMP
2805 config SYS_SUPPORTS_MIPS_CPS
2808 config SYS_SUPPORTS_SMP
2811 config NR_CPUS_DEFAULT_4
2814 config NR_CPUS_DEFAULT_8
2817 config NR_CPUS_DEFAULT_16
2820 config NR_CPUS_DEFAULT_32
2823 config NR_CPUS_DEFAULT_64
2827 int "Maximum number of CPUs (2-256)"
2830 default "4" if NR_CPUS_DEFAULT_4
2831 default "8" if NR_CPUS_DEFAULT_8
2832 default "16" if NR_CPUS_DEFAULT_16
2833 default "32" if NR_CPUS_DEFAULT_32
2834 default "64" if NR_CPUS_DEFAULT_64
2836 This allows you to specify the maximum number of CPUs which this
2837 kernel will support. The maximum supported value is 32 for 32-bit
2838 kernel and 64 for 64-bit kernels; the minimum value which makes
2839 sense is 1 for Qemu (useful only for kernel debugging purposes)
2840 and 2 for all others.
2842 This is purely to save memory - each supported CPU adds
2843 approximately eight kilobytes to the kernel image. For best
2844 performance should round up your number of processors to the next
2847 config MIPS_PERF_SHARED_TC_COUNTERS
2850 config MIPS_NR_CPU_NR_MAP_1024
2853 config MIPS_NR_CPU_NR_MAP
2856 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2857 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2860 # Timer Interrupt Frequency Configuration
2864 prompt "Timer frequency"
2867 Allows the configuration of the timer frequency.
2870 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2873 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2876 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2879 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2882 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2885 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2888 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2891 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2895 config SYS_SUPPORTS_24HZ
2898 config SYS_SUPPORTS_48HZ
2901 config SYS_SUPPORTS_100HZ
2904 config SYS_SUPPORTS_128HZ
2907 config SYS_SUPPORTS_250HZ
2910 config SYS_SUPPORTS_256HZ
2913 config SYS_SUPPORTS_1000HZ
2916 config SYS_SUPPORTS_1024HZ
2919 config SYS_SUPPORTS_ARBIT_HZ
2921 default y if !SYS_SUPPORTS_24HZ && \
2922 !SYS_SUPPORTS_48HZ && \
2923 !SYS_SUPPORTS_100HZ && \
2924 !SYS_SUPPORTS_128HZ && \
2925 !SYS_SUPPORTS_250HZ && \
2926 !SYS_SUPPORTS_256HZ && \
2927 !SYS_SUPPORTS_1000HZ && \
2928 !SYS_SUPPORTS_1024HZ
2934 default 100 if HZ_100
2935 default 128 if HZ_128
2936 default 250 if HZ_250
2937 default 256 if HZ_256
2938 default 1000 if HZ_1000
2939 default 1024 if HZ_1024
2942 def_bool HIGH_RES_TIMERS
2945 bool "Kexec system call"
2948 kexec is a system call that implements the ability to shutdown your
2949 current kernel, and to start another kernel. It is like a reboot
2950 but it is independent of the system firmware. And like a reboot
2951 you can start any kernel with it, not just Linux.
2953 The name comes from the similarity to the exec system call.
2955 It is an ongoing process to be certain the hardware in a machine
2956 is properly shutdown, so do not be surprised if this code does not
2957 initially work for you. As of this writing the exact hardware
2958 interface is strongly in flux, so no good recommendation can be
2962 bool "Kernel crash dumps"
2964 Generate crash dump after being started by kexec.
2965 This should be normally only set in special crash dump kernels
2966 which are loaded in the main kernel with kexec-tools into
2967 a specially reserved region and then later executed after
2968 a crash by kdump/kexec. The crash dump kernel must be compiled
2969 to a memory address not used by the main kernel or firmware using
2972 config PHYSICAL_START
2973 hex "Physical address where the kernel is loaded"
2974 default "0xffffffff84000000"
2975 depends on CRASH_DUMP
2977 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2978 If you plan to use kernel for capturing the crash dump change
2979 this value to start of the reserved region (the "X" value as
2980 specified in the "crashkernel=YM@XM" command line boot parameter
2981 passed to the panic-ed kernel).
2984 bool "Enable seccomp to safely compute untrusted bytecode"
2988 This kernel feature is useful for number crunching applications
2989 that may need to compute untrusted bytecode during their
2990 execution. By using pipes or other transports made available to
2991 the process as file descriptors supporting the read/write
2992 syscalls, it's possible to isolate those applications in
2993 their own address space using seccomp. Once seccomp is
2994 enabled via /proc/<pid>/seccomp, it cannot be disabled
2995 and the task is only allowed to execute a few safe syscalls
2996 defined by each seccomp mode.
2998 If unsure, say Y. Only embedded should say N here.
3000 config MIPS_O32_FP64_SUPPORT
3001 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3002 depends on 32BIT || MIPS32_O32
3004 When this is enabled, the kernel will support use of 64-bit floating
3005 point registers with binaries using the O32 ABI along with the
3006 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3007 32-bit MIPS systems this support is at the cost of increasing the
3008 size and complexity of the compiled FPU emulator. Thus if you are
3009 running a MIPS32 system and know that none of your userland binaries
3010 will require 64-bit floating point, you may wish to reduce the size
3011 of your kernel & potentially improve FP emulation performance by
3014 Although binutils currently supports use of this flag the details
3015 concerning its effect upon the O32 ABI in userland are still being
3016 worked on. In order to avoid userland becoming dependant upon current
3017 behaviour before the details have been finalised, this option should
3018 be considered experimental and only enabled by those working upon
3026 select OF_EARLY_FLATTREE
3036 prompt "Kernel appended dtb support" if USE_OF
3037 default MIPS_NO_APPENDED_DTB
3039 config MIPS_NO_APPENDED_DTB
3042 Do not enable appended dtb support.
3044 config MIPS_ELF_APPENDED_DTB
3047 With this option, the boot code will look for a device tree binary
3048 DTB) included in the vmlinux ELF section .appended_dtb. By default
3049 it is empty and the DTB can be appended using binutils command
3052 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3054 This is meant as a backward compatiblity convenience for those
3055 systems with a bootloader that can't be upgraded to accommodate
3056 the documented boot protocol using a device tree.
3058 config MIPS_RAW_APPENDED_DTB
3059 bool "vmlinux.bin or vmlinuz.bin"
3061 With this option, the boot code will look for a device tree binary
3062 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3063 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3065 This is meant as a backward compatibility convenience for those
3066 systems with a bootloader that can't be upgraded to accommodate
3067 the documented boot protocol using a device tree.
3069 Beware that there is very little in terms of protection against
3070 this option being confused by leftover garbage in memory that might
3071 look like a DTB header after a reboot if no actual DTB is appended
3072 to vmlinux.bin. Do not leave this option active in a production kernel
3073 if you don't intend to always append a DTB.
3077 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3078 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3081 default MIPS_CMDLINE_FROM_BOOTLOADER
3083 config MIPS_CMDLINE_FROM_DTB
3085 bool "Dtb kernel arguments if available"
3087 config MIPS_CMDLINE_DTB_EXTEND
3089 bool "Extend dtb kernel arguments with bootloader arguments"
3091 config MIPS_CMDLINE_FROM_BOOTLOADER
3092 bool "Bootloader kernel arguments if available"
3094 config MIPS_CMDLINE_BUILTIN_EXTEND
3095 depends on CMDLINE_BOOL
3096 bool "Extend builtin kernel arguments with bootloader arguments"
3101 config LOCKDEP_SUPPORT
3105 config STACKTRACE_SUPPORT
3109 config PGTABLE_LEVELS
3111 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3112 default 3 if 64BIT && !PAGE_SIZE_64KB
3115 config MIPS_AUTO_PFN_OFFSET
3118 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3120 config PCI_DRIVERS_GENERIC
3121 select PCI_DOMAINS_GENERIC if PCI
3124 config PCI_DRIVERS_LEGACY
3125 def_bool !PCI_DRIVERS_GENERIC
3126 select NO_GENERIC_PCI_IOPORT_MAP
3127 select PCI_DOMAINS if PCI
3130 # ISA support is now enabled via select. Too many systems still have the one
3131 # or other ISA chip on the board that users don't know about so don't expect
3132 # users to choose the right thing ...
3138 bool "TURBOchannel support"
3139 depends on MACH_DECSTATION
3141 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3142 processors. TURBOchannel programming specifications are available
3144 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3146 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3147 Linux driver support status is documented at:
3148 <http://www.linux-mips.org/wiki/DECstation>
3154 config ARCH_MMAP_RND_BITS_MIN
3158 config ARCH_MMAP_RND_BITS_MAX
3162 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3165 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3172 select MIPS_EXTERNAL_TIMER
3185 config MIPS32_COMPAT
3191 config SYSVIPC_COMPAT
3195 bool "Kernel support for o32 binaries"
3197 select ARCH_WANT_OLD_COMPAT_IPC
3199 select MIPS32_COMPAT
3200 select SYSVIPC_COMPAT if SYSVIPC
3202 Select this option if you want to run o32 binaries. These are pure
3203 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3204 existing binaries are in this format.
3209 bool "Kernel support for n32 binaries"
3211 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3213 select MIPS32_COMPAT
3214 select SYSVIPC_COMPAT if SYSVIPC
3216 Select this option if you want to run n32 binaries. These are
3217 64-bit binaries using 32-bit quantities for addressing and certain
3218 data that would normally be 64-bit. They are used in special
3225 default y if MIPS32_O32 || MIPS32_N32
3228 menu "Power management options"
3230 config ARCH_HIBERNATION_POSSIBLE
3232 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3234 config ARCH_SUSPEND_POSSIBLE
3236 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3238 source "kernel/power/Kconfig"
3242 config MIPS_EXTERNAL_TIMER
3245 menu "CPU Power Management"
3247 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3248 source "drivers/cpufreq/Kconfig"
3251 source "drivers/cpuidle/Kconfig"
3255 source "drivers/firmware/Kconfig"
3257 source "arch/mips/kvm/Kconfig"