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_STACKPROTECTOR
78 select HAVE_SYSCALL_TRACEPOINTS
79 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
80 select HAVE_GENERIC_VDSO
81 select IRQ_FORCED_THREADING
83 select MODULES_USE_ELF_RELA if MODULES && 64BIT
84 select MODULES_USE_ELF_REL if MODULES
85 select PERF_USE_VMALLOC
87 select SYSCTL_EXCEPTION_TRACE
89 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
91 menu "Machine selection"
98 bool "Generic board-agnostic MIPS kernel"
102 select CLKSRC_MIPS_GIC
104 select CPU_MIPSR2_IRQ_VI
105 select CPU_MIPSR2_IRQ_EI
107 select DMA_PERDEV_COHERENT
111 select MIPS_AUTO_PFN_OFFSET
112 select MIPS_CPU_SCACHE
114 select MIPS_L1_CACHE_SHIFT_7
115 select NO_EXCEPT_FILL
116 select PCI_DRIVERS_GENERIC
120 select SYS_HAS_CPU_MIPS32_R1
121 select SYS_HAS_CPU_MIPS32_R2
122 select SYS_HAS_CPU_MIPS32_R6
123 select SYS_HAS_CPU_MIPS64_R1
124 select SYS_HAS_CPU_MIPS64_R2
125 select SYS_HAS_CPU_MIPS64_R6
126 select SYS_SUPPORTS_32BIT_KERNEL
127 select SYS_SUPPORTS_64BIT_KERNEL
128 select SYS_SUPPORTS_BIG_ENDIAN
129 select SYS_SUPPORTS_HIGHMEM
130 select SYS_SUPPORTS_LITTLE_ENDIAN
131 select SYS_SUPPORTS_MICROMIPS
132 select SYS_SUPPORTS_MIPS_CPS
133 select SYS_SUPPORTS_MIPS16
134 select SYS_SUPPORTS_MULTITHREADING
135 select SYS_SUPPORTS_RELOCATABLE
136 select SYS_SUPPORTS_SMARTMIPS
137 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
138 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
139 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
140 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
141 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
142 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
146 Select this to build a kernel which aims to support multiple boards,
147 generally using a flattened device tree passed from the bootloader
148 using the boot protocol defined in the UHI (Unified Hosting
149 Interface) specification.
152 bool "Alchemy processor based machines"
153 select PHYS_ADDR_T_64BIT
157 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
158 select SYS_HAS_CPU_MIPS32_R1
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_APM_EMULATION
162 select SYS_SUPPORTS_ZBOOT
166 bool "Texas Instruments AR7"
168 select DMA_NONCOHERENT
172 select NO_EXCEPT_FILL
174 select SYS_HAS_CPU_MIPS32_R1
175 select SYS_HAS_EARLY_PRINTK
176 select SYS_SUPPORTS_32BIT_KERNEL
177 select SYS_SUPPORTS_LITTLE_ENDIAN
178 select SYS_SUPPORTS_MIPS16
179 select SYS_SUPPORTS_ZBOOT_UART16550
184 Support for the Texas Instruments AR7 System-on-a-Chip
185 family: TNETD7100, 7200 and 7300.
188 bool "Atheros AR231x/AR531x SoC support"
191 select DMA_NONCOHERENT
194 select SYS_HAS_CPU_MIPS32_R1
195 select SYS_SUPPORTS_BIG_ENDIAN
196 select SYS_SUPPORTS_32BIT_KERNEL
197 select SYS_HAS_EARLY_PRINTK
199 Support for Atheros AR231x and Atheros AR531x based boards
202 bool "Atheros AR71XX/AR724X/AR913X based boards"
203 select ARCH_HAS_RESET_CONTROLLER
207 select DMA_NONCOHERENT
214 select SYS_HAS_CPU_MIPS32_R2
215 select SYS_HAS_EARLY_PRINTK
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_BIG_ENDIAN
218 select SYS_SUPPORTS_MIPS16
219 select SYS_SUPPORTS_ZBOOT_UART_PROM
221 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
223 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
226 bool "Broadcom Generic BMIPS kernel"
227 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
228 select ARCH_HAS_PHYS_TO_DMA
230 select NO_EXCEPT_FILL
236 select BCM6345_L1_IRQ
237 select BCM7038_L1_IRQ
238 select BCM7120_L2_IRQ
239 select BRCMSTB_L2_IRQ
241 select DMA_NONCOHERENT
242 select SYS_SUPPORTS_32BIT_KERNEL
243 select SYS_SUPPORTS_LITTLE_ENDIAN
244 select SYS_SUPPORTS_BIG_ENDIAN
245 select SYS_SUPPORTS_HIGHMEM
246 select SYS_HAS_CPU_BMIPS32_3300
247 select SYS_HAS_CPU_BMIPS4350
248 select SYS_HAS_CPU_BMIPS4380
249 select SYS_HAS_CPU_BMIPS5000
251 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
252 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
253 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
254 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
255 select HARDIRQS_SW_RESEND
257 Build a generic DT-based kernel image that boots on select
258 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
259 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
260 must be set appropriately for your board.
263 bool "Broadcom BCM47XX based boards"
267 select DMA_NONCOHERENT
270 select SYS_HAS_CPU_MIPS32_R1
271 select NO_EXCEPT_FILL
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_LITTLE_ENDIAN
274 select SYS_SUPPORTS_MIPS16
275 select SYS_SUPPORTS_ZBOOT
276 select SYS_HAS_EARLY_PRINTK
277 select USE_GENERIC_EARLY_PRINTK_8250
279 select LEDS_GPIO_REGISTER
282 select BCM47XX_SSB if !BCM47XX_BCMA
284 Support for BCM47XX based boards
287 bool "Broadcom BCM63XX based boards"
292 select DMA_NONCOHERENT
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_BIG_ENDIAN
296 select SYS_HAS_EARLY_PRINTK
300 select MIPS_L1_CACHE_SHIFT_4
303 Support for BCM63XX based boards
310 select DMA_NONCOHERENT
316 select PCI_GT64XXX_PCI0
317 select SYS_HAS_CPU_NEVADA
318 select SYS_HAS_EARLY_PRINTK
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_64BIT_KERNEL
321 select SYS_SUPPORTS_LITTLE_ENDIAN
322 select USE_GENERIC_EARLY_PRINTK_8250
324 config MACH_DECSTATION
328 select CEVT_R4K if CPU_R4X00
330 select CSRC_R4K if CPU_R4X00
331 select CPU_DADDI_WORKAROUNDS if 64BIT
332 select CPU_R4000_WORKAROUNDS if 64BIT
333 select CPU_R4400_WORKAROUNDS if 64BIT
334 select DMA_NONCOHERENT
337 select SYS_HAS_CPU_R3000
338 select SYS_HAS_CPU_R4X00
339 select SYS_SUPPORTS_32BIT_KERNEL
340 select SYS_SUPPORTS_64BIT_KERNEL
341 select SYS_SUPPORTS_LITTLE_ENDIAN
342 select SYS_SUPPORTS_128HZ
343 select SYS_SUPPORTS_256HZ
344 select SYS_SUPPORTS_1024HZ
345 select MIPS_L1_CACHE_SHIFT_4
347 This enables support for DEC's MIPS based workstations. For details
348 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
349 DECstation porting pages on <http://decstation.unix-ag.org/>.
351 If you have one of the following DECstation Models you definitely
352 want to choose R4xx0 for the CPU Type:
359 otherwise choose R3000.
362 bool "Jazz family of machines"
365 select ARCH_MIGHT_HAVE_PC_PARPORT
366 select ARCH_MIGHT_HAVE_PC_SERIO
369 select ARCH_MAY_HAVE_PC_FDC
372 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
373 select GENERIC_ISA_DMA
374 select HAVE_PCSPKR_PLATFORM
379 select SYS_HAS_CPU_R4X00
380 select SYS_SUPPORTS_32BIT_KERNEL
381 select SYS_SUPPORTS_64BIT_KERNEL
382 select SYS_SUPPORTS_100HZ
384 This a family of machines based on the MIPS R4030 chipset which was
385 used by several vendors to build RISC/os and Windows NT workstations.
386 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
387 Olivetti M700-10 workstations.
390 bool "Ingenic SoC based machines"
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_LITTLE_ENDIAN
393 select SYS_SUPPORTS_ZBOOT_UART16550
394 select CPU_SUPPORTS_HUGEPAGES
395 select DMA_NONCOHERENT
400 select GENERIC_IRQ_CHIP
401 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
406 bool "Lantiq based platforms"
407 select DMA_NONCOHERENT
411 select SYS_HAS_CPU_MIPS32_R1
412 select SYS_HAS_CPU_MIPS32_R2
413 select SYS_SUPPORTS_BIG_ENDIAN
414 select SYS_SUPPORTS_32BIT_KERNEL
415 select SYS_SUPPORTS_MIPS16
416 select SYS_SUPPORTS_MULTITHREADING
417 select SYS_SUPPORTS_VPE_LOADER
418 select SYS_HAS_EARLY_PRINTK
425 select PINCTRL_LANTIQ
426 select ARCH_HAS_RESET_CONTROLLER
427 select RESET_CONTROLLER
430 bool "LASAT Networks platforms"
434 select DMA_NONCOHERENT
435 select SYS_HAS_EARLY_PRINTK
438 select PCI_GT64XXX_PCI0
440 select R5000_CPU_SCACHE
441 select SYS_HAS_CPU_R5000
442 select SYS_SUPPORTS_32BIT_KERNEL
443 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
444 select SYS_SUPPORTS_LITTLE_ENDIAN
446 config MACH_LOONGSON32
447 bool "Loongson 32-bit family of machines"
448 select SYS_SUPPORTS_ZBOOT
450 This enables support for the Loongson-1 family of machines.
452 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
453 the Institute of Computing Technology (ICT), Chinese Academy of
456 config MACH_LOONGSON2EF
457 bool "Loongson-2E/F family of machines"
458 select SYS_SUPPORTS_ZBOOT
460 This enables the support of early Loongson-2E/F family of machines.
462 config MACH_LOONGSON64
463 bool "Loongson 64-bit family of machines"
464 select ARCH_SPARSEMEM_ENABLE
465 select ARCH_MIGHT_HAVE_PC_PARPORT
466 select ARCH_MIGHT_HAVE_PC_SERIO
467 select GENERIC_ISA_DMA_SUPPORT_BROKEN
477 select NR_CPUS_DEFAULT_4
478 select USE_GENERIC_EARLY_PRINTK_8250
479 select SYS_HAS_CPU_LOONGSON64
480 select SYS_HAS_EARLY_PRINTK
481 select SYS_SUPPORTS_SMP
482 select SYS_SUPPORTS_HOTPLUG_CPU
483 select SYS_SUPPORTS_NUMA
484 select SYS_SUPPORTS_64BIT_KERNEL
485 select SYS_SUPPORTS_HIGHMEM
486 select SYS_SUPPORTS_LITTLE_ENDIAN
487 select SYS_SUPPORTS_ZBOOT
488 select LOONGSON_MC146818
492 This enables the support of Loongson-2/3 family of machines.
494 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
495 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
496 and Loongson-2F which will be removed), developed by the Institute
497 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
499 config MACH_PISTACHIO
500 bool "IMG Pistachio SoC based boards"
504 select CLKSRC_MIPS_GIC
507 select DMA_NONCOHERENT
512 select MIPS_CPU_SCACHE
516 select SYS_HAS_CPU_MIPS32_R2
517 select SYS_SUPPORTS_32BIT_KERNEL
518 select SYS_SUPPORTS_LITTLE_ENDIAN
519 select SYS_SUPPORTS_MIPS_CPS
520 select SYS_SUPPORTS_MULTITHREADING
521 select SYS_SUPPORTS_RELOCATABLE
522 select SYS_SUPPORTS_ZBOOT
523 select SYS_HAS_EARLY_PRINTK
524 select USE_GENERIC_EARLY_PRINTK_8250
527 This enables support for the IMG Pistachio SoC platform.
530 bool "MIPS Malta board"
531 select ARCH_MAY_HAVE_PC_FDC
532 select ARCH_MIGHT_HAVE_PC_PARPORT
533 select ARCH_MIGHT_HAVE_PC_SERIO
538 select CLKSRC_MIPS_GIC
541 select DMA_MAYBE_COHERENT
542 select GENERIC_ISA_DMA
543 select HAVE_PCSPKR_PLATFORM
550 select MIPS_CPU_SCACHE
552 select MIPS_L1_CACHE_SHIFT_6
554 select PCI_GT64XXX_PCI0
557 select SYS_HAS_CPU_MIPS32_R1
558 select SYS_HAS_CPU_MIPS32_R2
559 select SYS_HAS_CPU_MIPS32_R3_5
560 select SYS_HAS_CPU_MIPS32_R5
561 select SYS_HAS_CPU_MIPS32_R6
562 select SYS_HAS_CPU_MIPS64_R1
563 select SYS_HAS_CPU_MIPS64_R2
564 select SYS_HAS_CPU_MIPS64_R6
565 select SYS_HAS_CPU_NEVADA
566 select SYS_HAS_CPU_RM7000
567 select SYS_SUPPORTS_32BIT_KERNEL
568 select SYS_SUPPORTS_64BIT_KERNEL
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
572 select SYS_SUPPORTS_MICROMIPS
573 select SYS_SUPPORTS_MIPS16
574 select SYS_SUPPORTS_MIPS_CMP
575 select SYS_SUPPORTS_MIPS_CPS
576 select SYS_SUPPORTS_MULTITHREADING
577 select SYS_SUPPORTS_RELOCATABLE
578 select SYS_SUPPORTS_SMARTMIPS
579 select SYS_SUPPORTS_VPE_LOADER
580 select SYS_SUPPORTS_ZBOOT
582 select ZONE_DMA32 if 64BIT
584 This enables support for the MIPS Technologies Malta evaluation
588 bool "Microchip PIC32 Family"
590 This enables support for the Microchip PIC32 family of platforms.
592 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
596 bool "NEC EMMA2RH Mark-eins board"
600 This enables support for the NEC Electronics Mark-eins boards.
603 bool "NEC VR4100 series based machines"
606 select SYS_HAS_CPU_VR41XX
607 select SYS_SUPPORTS_MIPS16
611 bool "NXP STB220 board"
614 Support for NXP Semiconductors STB220 Development Board.
621 Support for NXP Semiconductors STB225 Development Board.
624 bool "PMC-Sierra MSP chipsets"
627 select DMA_NONCOHERENT
629 select NO_EXCEPT_FILL
631 select SYS_HAS_CPU_MIPS32_R1
632 select SYS_HAS_CPU_MIPS32_R2
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_MIPS16
638 select SERIAL_8250_CONSOLE
639 select USB_EHCI_BIG_ENDIAN_MMIO
640 select USB_EHCI_BIG_ENDIAN_DESC
642 This adds support for the PMC-Sierra family of Multi-Service
643 Processor System-On-A-Chips. These parts include a number
644 of integrated peripherals, interfaces and DSPs in addition to
645 a variety of MIPS cores.
648 bool "Ralink based machines"
652 select DMA_NONCOHERENT
655 select SYS_HAS_CPU_MIPS32_R1
656 select SYS_HAS_CPU_MIPS32_R2
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_LITTLE_ENDIAN
659 select SYS_SUPPORTS_MIPS16
660 select SYS_HAS_EARLY_PRINTK
662 select ARCH_HAS_RESET_CONTROLLER
663 select RESET_CONTROLLER
666 bool "SGI IP22 (Indy/Indigo2)"
671 select ARCH_MIGHT_HAVE_PC_SERIO
675 select DEFAULT_SGI_PARTITION
676 select DMA_NONCOHERENT
680 select IP22_CPU_SCACHE
682 select GENERIC_ISA_DMA_SUPPORT_BROKEN
684 select SGI_HAS_INDYDOG
690 select SYS_HAS_CPU_R4X00
691 select SYS_HAS_CPU_R5000
692 select SYS_HAS_EARLY_PRINTK
693 select SYS_SUPPORTS_32BIT_KERNEL
694 select SYS_SUPPORTS_64BIT_KERNEL
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select MIPS_L1_CACHE_SHIFT_7
698 This are the SGI Indy, Challenge S and Indigo2, as well as certain
699 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
700 that runs on these, say Y here.
703 bool "SGI IP27 (Origin200/2000)"
704 select ARCH_HAS_PHYS_TO_DMA
705 select ARCH_SPARSEMEM_ENABLE
708 select ARC_CMDLINE_ONLY
710 select DEFAULT_SGI_PARTITION
711 select SYS_HAS_EARLY_PRINTK
714 select IRQ_DOMAIN_HIERARCHY
715 select NR_CPUS_DEFAULT_64
716 select PCI_DRIVERS_GENERIC
717 select PCI_XTALK_BRIDGE
718 select SYS_HAS_CPU_R10000
719 select SYS_SUPPORTS_64BIT_KERNEL
720 select SYS_SUPPORTS_BIG_ENDIAN
721 select SYS_SUPPORTS_NUMA
722 select SYS_SUPPORTS_SMP
723 select MIPS_L1_CACHE_SHIFT_7
725 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
726 workstations. To compile a Linux kernel that runs on these, say Y
730 bool "SGI IP28 (Indigo2 R10k)"
735 select ARCH_MIGHT_HAVE_PC_SERIO
739 select DEFAULT_SGI_PARTITION
740 select DMA_NONCOHERENT
741 select GENERIC_ISA_DMA_SUPPORT_BROKEN
747 select SGI_HAS_INDYDOG
753 select SYS_HAS_CPU_R10000
754 select SYS_HAS_EARLY_PRINTK
755 select SYS_SUPPORTS_64BIT_KERNEL
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select MIPS_L1_CACHE_SHIFT_7
759 This is the SGI Indigo2 with R10000 processor. To compile a Linux
760 kernel that runs on these, say Y here.
763 bool "SGI IP30 (Octane/Octane2)"
764 select ARCH_HAS_PHYS_TO_DMA
770 select SYNC_R4K if SMP
774 select IRQ_DOMAIN_HIERARCHY
775 select NR_CPUS_DEFAULT_2
776 select PCI_DRIVERS_GENERIC
777 select PCI_XTALK_BRIDGE
778 select SYS_HAS_EARLY_PRINTK
779 select SYS_HAS_CPU_R10000
780 select SYS_SUPPORTS_64BIT_KERNEL
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_SMP
783 select MIPS_L1_CACHE_SHIFT_7
786 These are the SGI Octane and Octane2 graphics workstations. To
787 compile a Linux kernel that runs on these, say Y here.
793 select ARCH_HAS_PHYS_TO_DMA
799 select DMA_NONCOHERENT
802 select R5000_CPU_SCACHE
803 select RM7000_CPU_SCACHE
804 select SYS_HAS_CPU_R5000
805 select SYS_HAS_CPU_R10000 if BROKEN
806 select SYS_HAS_CPU_RM7000
807 select SYS_HAS_CPU_NEVADA
808 select SYS_SUPPORTS_64BIT_KERNEL
809 select SYS_SUPPORTS_BIG_ENDIAN
811 If you want this kernel to run on SGI O2 workstation, say Y here.
814 bool "Sibyte BCM91120C-CRhine"
816 select SIBYTE_BCM1120
818 select SYS_HAS_CPU_SB1
819 select SYS_SUPPORTS_BIG_ENDIAN
820 select SYS_SUPPORTS_LITTLE_ENDIAN
823 bool "Sibyte BCM91120x-Carmel"
825 select SIBYTE_BCM1120
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_LITTLE_ENDIAN
832 bool "Sibyte BCM91125C-CRhone"
834 select SIBYTE_BCM1125
836 select SYS_HAS_CPU_SB1
837 select SYS_SUPPORTS_BIG_ENDIAN
838 select SYS_SUPPORTS_HIGHMEM
839 select SYS_SUPPORTS_LITTLE_ENDIAN
842 bool "Sibyte BCM91125E-Rhone"
844 select SIBYTE_BCM1125H
846 select SYS_HAS_CPU_SB1
847 select SYS_SUPPORTS_BIG_ENDIAN
848 select SYS_SUPPORTS_LITTLE_ENDIAN
851 bool "Sibyte BCM91250A-SWARM"
853 select HAVE_PATA_PLATFORM
856 select SYS_HAS_CPU_SB1
857 select SYS_SUPPORTS_BIG_ENDIAN
858 select SYS_SUPPORTS_HIGHMEM
859 select SYS_SUPPORTS_LITTLE_ENDIAN
860 select ZONE_DMA32 if 64BIT
861 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
863 config SIBYTE_LITTLESUR
864 bool "Sibyte BCM91250C2-LittleSur"
866 select HAVE_PATA_PLATFORM
869 select SYS_HAS_CPU_SB1
870 select SYS_SUPPORTS_BIG_ENDIAN
871 select SYS_SUPPORTS_HIGHMEM
872 select SYS_SUPPORTS_LITTLE_ENDIAN
873 select ZONE_DMA32 if 64BIT
875 config SIBYTE_SENTOSA
876 bool "Sibyte BCM91250E-Sentosa"
880 select SYS_HAS_CPU_SB1
881 select SYS_SUPPORTS_BIG_ENDIAN
882 select SYS_SUPPORTS_LITTLE_ENDIAN
883 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
886 bool "Sibyte BCM91480B-BigSur"
888 select NR_CPUS_DEFAULT_4
889 select SIBYTE_BCM1x80
891 select SYS_HAS_CPU_SB1
892 select SYS_SUPPORTS_BIG_ENDIAN
893 select SYS_SUPPORTS_HIGHMEM
894 select SYS_SUPPORTS_LITTLE_ENDIAN
895 select ZONE_DMA32 if 64BIT
896 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
899 bool "SNI RM200/300/400"
902 select FW_ARC if CPU_LITTLE_ENDIAN
903 select FW_ARC32 if CPU_LITTLE_ENDIAN
904 select FW_SNIPROM if CPU_BIG_ENDIAN
905 select ARCH_MAY_HAVE_PC_FDC
906 select ARCH_MIGHT_HAVE_PC_PARPORT
907 select ARCH_MIGHT_HAVE_PC_SERIO
911 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
912 select DMA_NONCOHERENT
913 select GENERIC_ISA_DMA
915 select HAVE_PCSPKR_PLATFORM
921 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
922 select SYS_HAS_CPU_R4X00
923 select SYS_HAS_CPU_R5000
924 select SYS_HAS_CPU_R10000
925 select R5000_CPU_SCACHE
926 select SYS_HAS_EARLY_PRINTK
927 select SYS_SUPPORTS_32BIT_KERNEL
928 select SYS_SUPPORTS_64BIT_KERNEL
929 select SYS_SUPPORTS_BIG_ENDIAN
930 select SYS_SUPPORTS_HIGHMEM
931 select SYS_SUPPORTS_LITTLE_ENDIAN
933 The SNI RM200/300/400 are MIPS-based machines manufactured by
934 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
935 Technology and now in turn merged with Fujitsu. Say Y here to
936 support this machine type.
939 bool "Toshiba TX39 series based machines"
942 bool "Toshiba TX49 series based machines"
944 config MIKROTIK_RB532
945 bool "Mikrotik RB532 boards"
948 select DMA_NONCOHERENT
951 select SYS_HAS_CPU_MIPS32_R1
952 select SYS_SUPPORTS_32BIT_KERNEL
953 select SYS_SUPPORTS_LITTLE_ENDIAN
957 select MIPS_L1_CACHE_SHIFT_4
959 Support the Mikrotik(tm) RouterBoard 532 series,
960 based on the IDT RC32434 SoC.
962 config CAVIUM_OCTEON_SOC
963 bool "Cavium Networks Octeon SoC based boards"
965 select ARCH_HAS_PHYS_TO_DMA
967 select PHYS_ADDR_T_64BIT
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select SYS_SUPPORTS_BIG_ENDIAN
971 select EDAC_ATOMIC_SCRUB
972 select SYS_SUPPORTS_LITTLE_ENDIAN
973 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
974 select SYS_HAS_EARLY_PRINTK
975 select SYS_HAS_CPU_CAVIUM_OCTEON
982 select ARCH_SPARSEMEM_ENABLE
983 select SYS_SUPPORTS_SMP
984 select NR_CPUS_DEFAULT_64
985 select MIPS_NR_CPU_NR_MAP_1024
987 select MTD_COMPLEX_MAPPINGS
989 select SYS_SUPPORTS_RELOCATABLE
991 This option supports all of the Octeon reference boards from Cavium
992 Networks. It builds a kernel that dynamically determines the Octeon
993 CPU type and supports all known board reference implementations.
994 Some of the supported boards are:
1001 Say Y here for most Octeon reference boards.
1003 config NLM_XLR_BOARD
1004 bool "Netlogic XLR/XLS based systems"
1007 select SYS_HAS_CPU_XLR
1008 select SYS_SUPPORTS_SMP
1010 select SWAP_IO_SPACE
1011 select SYS_SUPPORTS_32BIT_KERNEL
1012 select SYS_SUPPORTS_64BIT_KERNEL
1013 select PHYS_ADDR_T_64BIT
1014 select SYS_SUPPORTS_BIG_ENDIAN
1015 select SYS_SUPPORTS_HIGHMEM
1016 select NR_CPUS_DEFAULT_32
1020 select ZONE_DMA32 if 64BIT
1022 select SYS_HAS_EARLY_PRINTK
1023 select SYS_SUPPORTS_ZBOOT
1024 select SYS_SUPPORTS_ZBOOT_UART16550
1026 Support for systems based on Netlogic XLR and XLS processors.
1027 Say Y here if you have a XLR or XLS based board.
1029 config NLM_XLP_BOARD
1030 bool "Netlogic XLP based systems"
1033 select SYS_HAS_CPU_XLP
1034 select SYS_SUPPORTS_SMP
1036 select SYS_SUPPORTS_32BIT_KERNEL
1037 select SYS_SUPPORTS_64BIT_KERNEL
1038 select PHYS_ADDR_T_64BIT
1040 select SYS_SUPPORTS_BIG_ENDIAN
1041 select SYS_SUPPORTS_LITTLE_ENDIAN
1042 select SYS_SUPPORTS_HIGHMEM
1043 select NR_CPUS_DEFAULT_32
1047 select ZONE_DMA32 if 64BIT
1049 select SYS_HAS_EARLY_PRINTK
1051 select SYS_SUPPORTS_ZBOOT
1052 select SYS_SUPPORTS_ZBOOT_UART16550
1054 This board is based on Netlogic XLP Processor.
1055 Say Y here if you have a XLP based board.
1057 config MIPS_PARAVIRT
1058 bool "Para-Virtualized guest system"
1061 select SYS_SUPPORTS_64BIT_KERNEL
1062 select SYS_SUPPORTS_32BIT_KERNEL
1063 select SYS_SUPPORTS_BIG_ENDIAN
1064 select SYS_SUPPORTS_SMP
1065 select NR_CPUS_DEFAULT_4
1066 select SYS_HAS_EARLY_PRINTK
1067 select SYS_HAS_CPU_MIPS32_R2
1068 select SYS_HAS_CPU_MIPS64_R2
1069 select SYS_HAS_CPU_CAVIUM_OCTEON
1071 select SWAP_IO_SPACE
1073 This option supports guest running under ????
1077 source "arch/mips/alchemy/Kconfig"
1078 source "arch/mips/ath25/Kconfig"
1079 source "arch/mips/ath79/Kconfig"
1080 source "arch/mips/bcm47xx/Kconfig"
1081 source "arch/mips/bcm63xx/Kconfig"
1082 source "arch/mips/bmips/Kconfig"
1083 source "arch/mips/generic/Kconfig"
1084 source "arch/mips/jazz/Kconfig"
1085 source "arch/mips/jz4740/Kconfig"
1086 source "arch/mips/lantiq/Kconfig"
1087 source "arch/mips/lasat/Kconfig"
1088 source "arch/mips/pic32/Kconfig"
1089 source "arch/mips/pistachio/Kconfig"
1090 source "arch/mips/pmcs-msp71xx/Kconfig"
1091 source "arch/mips/ralink/Kconfig"
1092 source "arch/mips/sgi-ip27/Kconfig"
1093 source "arch/mips/sibyte/Kconfig"
1094 source "arch/mips/txx9/Kconfig"
1095 source "arch/mips/vr41xx/Kconfig"
1096 source "arch/mips/cavium-octeon/Kconfig"
1097 source "arch/mips/loongson2ef/Kconfig"
1098 source "arch/mips/loongson32/Kconfig"
1099 source "arch/mips/loongson64/Kconfig"
1100 source "arch/mips/netlogic/Kconfig"
1101 source "arch/mips/paravirt/Kconfig"
1105 config GENERIC_HWEIGHT
1109 config GENERIC_CALIBRATE_DELAY
1113 config SCHED_OMIT_FRAME_POINTER
1118 # Select some configuration options automatically based on user selections.
1123 config ARCH_MAY_HAVE_PC_FDC
1159 config MIPS_CLOCK_VSYSCALL
1160 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1169 config ARCH_SUPPORTS_UPROBES
1172 config DMA_MAYBE_COHERENT
1173 select ARCH_HAS_DMA_COHERENCE_H
1174 select DMA_NONCOHERENT
1177 config DMA_PERDEV_COHERENT
1179 select ARCH_HAS_SETUP_DMA_OPS
1180 select DMA_NONCOHERENT
1182 config DMA_NONCOHERENT
1185 # MIPS allows mixing "slightly different" Cacheability and Coherency
1186 # Attribute bits. It is believed that the uncached access through
1187 # KSEG1 and the implementation specific "uncached accelerated" used
1188 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1189 # significant advantages.
1191 select ARCH_HAS_DMA_WRITE_COMBINE
1192 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1193 select ARCH_HAS_UNCACHED_SEGMENT
1194 select NEED_DMA_MAP_STATE
1195 select ARCH_HAS_DMA_COHERENT_TO_PFN
1196 select DMA_NONCOHERENT_CACHE_SYNC
1198 config SYS_HAS_EARLY_PRINTK
1201 config SYS_SUPPORTS_HOTPLUG_CPU
1204 config MIPS_BONITO64
1219 config NO_IOPORT_MAP
1224 default y if !CPU_HAS_LOAD_STORE_LR
1226 config GENERIC_ISA_DMA
1228 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1231 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1233 select GENERIC_ISA_DMA
1238 config HOLES_IN_ZONE
1241 config SYS_SUPPORTS_RELOCATABLE
1244 Selected if the platform supports relocating the kernel.
1245 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1246 to allow access to command line and entropy sources.
1248 config MIPS_CBPF_JIT
1250 depends on BPF_JIT && HAVE_CBPF_JIT
1252 config MIPS_EBPF_JIT
1254 depends on BPF_JIT && HAVE_EBPF_JIT
1258 # Endianness selection. Sufficiently obscure so many users don't know what to
1259 # answer,so we try hard to limit the available choices. Also the use of a
1260 # choice statement should be more obvious to the user.
1263 prompt "Endianness selection"
1265 Some MIPS machines can be configured for either little or big endian
1266 byte order. These modes require different kernels and a different
1267 Linux distribution. In general there is one preferred byteorder for a
1268 particular system but some systems are just as commonly used in the
1269 one or the other endianness.
1271 config CPU_BIG_ENDIAN
1273 depends on SYS_SUPPORTS_BIG_ENDIAN
1275 config CPU_LITTLE_ENDIAN
1276 bool "Little endian"
1277 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1284 config SYS_SUPPORTS_APM_EMULATION
1287 config SYS_SUPPORTS_BIG_ENDIAN
1290 config SYS_SUPPORTS_LITTLE_ENDIAN
1293 config SYS_SUPPORTS_HUGETLBFS
1295 depends on CPU_SUPPORTS_HUGEPAGES
1298 config MIPS_HUGE_TLB_SUPPORT
1299 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1316 config PCI_GT64XXX_PCI0
1319 config PCI_XTALK_BRIDGE
1322 config NO_EXCEPT_FILL
1329 select DMA_NONCOHERENT
1331 select SWAP_IO_SPACE
1332 select SYS_HAS_CPU_R5500
1333 select SYS_SUPPORTS_32BIT_KERNEL
1334 select SYS_SUPPORTS_64BIT_KERNEL
1335 select SYS_SUPPORTS_BIG_ENDIAN
1342 select DMA_NONCOHERENT
1343 select SYS_HAS_CPU_MIPS32_R2
1344 select SYS_SUPPORTS_32BIT_KERNEL
1345 select SYS_SUPPORTS_LITTLE_ENDIAN
1346 select SYS_SUPPORTS_BIG_ENDIAN
1347 select SYS_SUPPORTS_MIPS16
1348 select CPU_MIPSR2_IRQ_VI
1357 config SWAP_IO_SPACE
1360 config SGI_HAS_INDYDOG
1372 config SGI_HAS_ZILOG
1375 config SGI_HAS_I8042
1378 config DEFAULT_SGI_PARTITION
1390 config MIPS_L1_CACHE_SHIFT_4
1393 config MIPS_L1_CACHE_SHIFT_5
1396 config MIPS_L1_CACHE_SHIFT_6
1399 config MIPS_L1_CACHE_SHIFT_7
1402 config MIPS_L1_CACHE_SHIFT
1404 default "7" if MIPS_L1_CACHE_SHIFT_7
1405 default "6" if MIPS_L1_CACHE_SHIFT_6
1406 default "5" if MIPS_L1_CACHE_SHIFT_5
1407 default "4" if MIPS_L1_CACHE_SHIFT_4
1410 config HAVE_STD_PC_SERIAL_PORT
1413 config ARC_CMDLINE_ONLY
1417 bool "ARC console support"
1418 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1432 menu "CPU selection"
1438 config CPU_LOONGSON64
1439 bool "Loongson 64-bit CPU"
1440 depends on SYS_HAS_CPU_LOONGSON64
1441 select ARCH_HAS_PHYS_TO_DMA
1442 select CPU_SUPPORTS_64BIT_KERNEL
1443 select CPU_SUPPORTS_HIGHMEM
1444 select CPU_SUPPORTS_HUGEPAGES
1445 select CPU_SUPPORTS_MSA
1446 select CPU_HAS_LOAD_STORE_LR
1447 select WEAK_ORDERING
1448 select WEAK_REORDERING_BEYOND_LLSC
1449 select MIPS_ASID_BITS_VARIABLE
1450 select MIPS_PGD_C0_CONTEXT
1451 select MIPS_L1_CACHE_SHIFT_6
1455 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1456 cores implements the MIPS64R2 instruction set with many extensions,
1457 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1458 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1459 Loongson-2E/2F is not covered here and will be removed in future.
1461 config LOONGSON3_ENHANCEMENT
1462 bool "New Loongson-3 CPU Enhancements"
1465 select CPU_HAS_PREFETCH
1466 depends on CPU_LOONGSON64
1468 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1469 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1470 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1471 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1472 Fast TLB refill support, etc.
1474 This option enable those enhancements which are not probed at run
1475 time. If you want a generic kernel to run on all Loongson 3 machines,
1476 please say 'N' here. If you want a high-performance kernel to run on
1477 new Loongson-3 machines only, please say 'Y' here.
1479 config CPU_LOONGSON3_WORKAROUNDS
1480 bool "Old Loongson-3 LLSC Workarounds"
1482 depends on CPU_LOONGSON64
1484 Loongson-3 processors have the llsc issues which require workarounds.
1485 Without workarounds the system may hang unexpectedly.
1487 Newer Loongson-3 will fix these issues and no workarounds are needed.
1488 The workarounds have no significant side effect on them but may
1489 decrease the performance of the system so this option should be
1490 disabled unless the kernel is intended to be run on old systems.
1492 If unsure, please say Y.
1494 config CPU_LOONGSON2E
1496 depends on SYS_HAS_CPU_LOONGSON2E
1497 select CPU_LOONGSON2EF
1499 The Loongson 2E processor implements the MIPS III instruction set
1500 with many extensions.
1502 It has an internal FPGA northbridge, which is compatible to
1505 config CPU_LOONGSON2F
1507 depends on SYS_HAS_CPU_LOONGSON2F
1508 select CPU_LOONGSON2EF
1511 The Loongson 2F processor implements the MIPS III instruction set
1512 with many extensions.
1514 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1515 have a similar programming interface with FPGA northbridge used in
1518 config CPU_LOONGSON1B
1520 depends on SYS_HAS_CPU_LOONGSON1B
1521 select CPU_LOONGSON32
1522 select LEDS_GPIO_REGISTER
1524 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1525 Release 1 instruction set and part of the MIPS32 Release 2
1528 config CPU_LOONGSON1C
1530 depends on SYS_HAS_CPU_LOONGSON1C
1531 select CPU_LOONGSON32
1532 select LEDS_GPIO_REGISTER
1534 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1535 Release 1 instruction set and part of the MIPS32 Release 2
1538 config CPU_MIPS32_R1
1539 bool "MIPS32 Release 1"
1540 depends on SYS_HAS_CPU_MIPS32_R1
1541 select CPU_HAS_PREFETCH
1542 select CPU_HAS_LOAD_STORE_LR
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select CPU_SUPPORTS_HIGHMEM
1546 Choose this option to build a kernel for release 1 or later of the
1547 MIPS32 architecture. Most modern embedded systems with a 32-bit
1548 MIPS processor are based on a MIPS32 processor. If you know the
1549 specific type of processor in your system, choose those that one
1550 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1551 Release 2 of the MIPS32 architecture is available since several
1552 years so chances are you even have a MIPS32 Release 2 processor
1553 in which case you should choose CPU_MIPS32_R2 instead for better
1556 config CPU_MIPS32_R2
1557 bool "MIPS32 Release 2"
1558 depends on SYS_HAS_CPU_MIPS32_R2
1559 select CPU_HAS_PREFETCH
1560 select CPU_HAS_LOAD_STORE_LR
1561 select CPU_SUPPORTS_32BIT_KERNEL
1562 select CPU_SUPPORTS_HIGHMEM
1563 select CPU_SUPPORTS_MSA
1566 Choose this option to build a kernel for release 2 or later of the
1567 MIPS32 architecture. Most modern embedded systems with a 32-bit
1568 MIPS processor are based on a MIPS32 processor. If you know the
1569 specific type of processor in your system, choose those that one
1570 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1572 config CPU_MIPS32_R6
1573 bool "MIPS32 Release 6"
1574 depends on SYS_HAS_CPU_MIPS32_R6
1575 select CPU_HAS_PREFETCH
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_HIGHMEM
1578 select CPU_SUPPORTS_MSA
1580 select MIPS_O32_FP64_SUPPORT
1582 Choose this option to build a kernel for release 6 or later of the
1583 MIPS32 architecture. New MIPS processors, starting with the Warrior
1584 family, are based on a MIPS32r6 processor. If you own an older
1585 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1587 config CPU_MIPS64_R1
1588 bool "MIPS64 Release 1"
1589 depends on SYS_HAS_CPU_MIPS64_R1
1590 select CPU_HAS_PREFETCH
1591 select CPU_HAS_LOAD_STORE_LR
1592 select CPU_SUPPORTS_32BIT_KERNEL
1593 select CPU_SUPPORTS_64BIT_KERNEL
1594 select CPU_SUPPORTS_HIGHMEM
1595 select CPU_SUPPORTS_HUGEPAGES
1597 Choose this option to build a kernel for release 1 or later of the
1598 MIPS64 architecture. Many modern embedded systems with a 64-bit
1599 MIPS processor are based on a MIPS64 processor. If you know the
1600 specific type of processor in your system, choose those that one
1601 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1602 Release 2 of the MIPS64 architecture is available since several
1603 years so chances are you even have a MIPS64 Release 2 processor
1604 in which case you should choose CPU_MIPS64_R2 instead for better
1607 config CPU_MIPS64_R2
1608 bool "MIPS64 Release 2"
1609 depends on SYS_HAS_CPU_MIPS64_R2
1610 select CPU_HAS_PREFETCH
1611 select CPU_HAS_LOAD_STORE_LR
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HIGHMEM
1615 select CPU_SUPPORTS_HUGEPAGES
1616 select CPU_SUPPORTS_MSA
1619 Choose this option to build a kernel for release 2 or later of the
1620 MIPS64 architecture. Many modern embedded systems with a 64-bit
1621 MIPS processor are based on a MIPS64 processor. If you know the
1622 specific type of processor in your system, choose those that one
1623 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1625 config CPU_MIPS64_R6
1626 bool "MIPS64 Release 6"
1627 depends on SYS_HAS_CPU_MIPS64_R6
1628 select CPU_HAS_PREFETCH
1629 select CPU_SUPPORTS_32BIT_KERNEL
1630 select CPU_SUPPORTS_64BIT_KERNEL
1631 select CPU_SUPPORTS_HIGHMEM
1632 select CPU_SUPPORTS_HUGEPAGES
1633 select CPU_SUPPORTS_MSA
1634 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1637 Choose this option to build a kernel for release 6 or later of the
1638 MIPS64 architecture. New MIPS processors, starting with the Warrior
1639 family, are based on a MIPS64r6 processor. If you own an older
1640 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1644 depends on SYS_HAS_CPU_R3000
1646 select CPU_HAS_LOAD_STORE_LR
1648 select CPU_SUPPORTS_32BIT_KERNEL
1649 select CPU_SUPPORTS_HIGHMEM
1651 Please make sure to pick the right CPU type. Linux/MIPS is not
1652 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1653 *not* work on R4000 machines and vice versa. However, since most
1654 of the supported machines have an R4000 (or similar) CPU, R4x00
1655 might be a safe bet. If the resulting kernel does not work,
1656 try to recompile with R3000.
1660 depends on SYS_HAS_CPU_TX39XX
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_HAS_LOAD_STORE_LR
1667 depends on SYS_HAS_CPU_VR41XX
1668 select CPU_SUPPORTS_32BIT_KERNEL
1669 select CPU_SUPPORTS_64BIT_KERNEL
1670 select CPU_HAS_LOAD_STORE_LR
1672 The options selects support for the NEC VR4100 series of processors.
1673 Only choose this option if you have one of these processors as a
1674 kernel built with this option will not run on any other type of
1675 processor or vice versa.
1679 depends on SYS_HAS_CPU_R4X00
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_64BIT_KERNEL
1682 select CPU_SUPPORTS_HUGEPAGES
1683 select CPU_HAS_LOAD_STORE_LR
1685 MIPS Technologies R4000-series processors other than 4300, including
1686 the R4000, R4400, R4600, and 4700.
1690 depends on SYS_HAS_CPU_TX49XX
1691 select CPU_HAS_PREFETCH
1692 select CPU_HAS_LOAD_STORE_LR
1693 select CPU_SUPPORTS_32BIT_KERNEL
1694 select CPU_SUPPORTS_64BIT_KERNEL
1695 select CPU_SUPPORTS_HUGEPAGES
1699 depends on SYS_HAS_CPU_R5000
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_SUPPORTS_HUGEPAGES
1703 select CPU_HAS_LOAD_STORE_LR
1705 MIPS Technologies R5000-series processors other than the Nevada.
1709 depends on SYS_HAS_CPU_R5500
1710 select CPU_SUPPORTS_32BIT_KERNEL
1711 select CPU_SUPPORTS_64BIT_KERNEL
1712 select CPU_SUPPORTS_HUGEPAGES
1713 select CPU_HAS_LOAD_STORE_LR
1715 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1720 depends on SYS_HAS_CPU_NEVADA
1721 select CPU_SUPPORTS_32BIT_KERNEL
1722 select CPU_SUPPORTS_64BIT_KERNEL
1723 select CPU_SUPPORTS_HUGEPAGES
1724 select CPU_HAS_LOAD_STORE_LR
1726 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1730 depends on SYS_HAS_CPU_R10000
1731 select CPU_HAS_PREFETCH
1732 select CPU_HAS_LOAD_STORE_LR
1733 select CPU_SUPPORTS_32BIT_KERNEL
1734 select CPU_SUPPORTS_64BIT_KERNEL
1735 select CPU_SUPPORTS_HIGHMEM
1736 select CPU_SUPPORTS_HUGEPAGES
1738 MIPS Technologies R10000-series processors.
1742 depends on SYS_HAS_CPU_RM7000
1743 select CPU_HAS_PREFETCH
1744 select CPU_HAS_LOAD_STORE_LR
1745 select CPU_SUPPORTS_32BIT_KERNEL
1746 select CPU_SUPPORTS_64BIT_KERNEL
1747 select CPU_SUPPORTS_HIGHMEM
1748 select CPU_SUPPORTS_HUGEPAGES
1752 depends on SYS_HAS_CPU_SB1
1753 select CPU_HAS_LOAD_STORE_LR
1754 select CPU_SUPPORTS_32BIT_KERNEL
1755 select CPU_SUPPORTS_64BIT_KERNEL
1756 select CPU_SUPPORTS_HIGHMEM
1757 select CPU_SUPPORTS_HUGEPAGES
1758 select WEAK_ORDERING
1760 config CPU_CAVIUM_OCTEON
1761 bool "Cavium Octeon processor"
1762 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1763 select CPU_HAS_PREFETCH
1764 select CPU_HAS_LOAD_STORE_LR
1765 select CPU_SUPPORTS_64BIT_KERNEL
1766 select WEAK_ORDERING
1767 select CPU_SUPPORTS_HIGHMEM
1768 select CPU_SUPPORTS_HUGEPAGES
1769 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1770 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1771 select MIPS_L1_CACHE_SHIFT_7
1774 The Cavium Octeon processor is a highly integrated chip containing
1775 many ethernet hardware widgets for networking tasks. The processor
1776 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1777 Full details can be found at http://www.caviumnetworks.com.
1780 bool "Broadcom BMIPS"
1781 depends on SYS_HAS_CPU_BMIPS
1783 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1784 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1785 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1786 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1787 select CPU_SUPPORTS_32BIT_KERNEL
1788 select DMA_NONCOHERENT
1790 select SWAP_IO_SPACE
1791 select WEAK_ORDERING
1792 select CPU_SUPPORTS_HIGHMEM
1793 select CPU_HAS_PREFETCH
1794 select CPU_HAS_LOAD_STORE_LR
1795 select CPU_SUPPORTS_CPUFREQ
1796 select MIPS_EXTERNAL_TIMER
1798 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1801 bool "Netlogic XLR SoC"
1802 depends on SYS_HAS_CPU_XLR
1803 select CPU_HAS_LOAD_STORE_LR
1804 select CPU_SUPPORTS_32BIT_KERNEL
1805 select CPU_SUPPORTS_64BIT_KERNEL
1806 select CPU_SUPPORTS_HIGHMEM
1807 select CPU_SUPPORTS_HUGEPAGES
1808 select WEAK_ORDERING
1809 select WEAK_REORDERING_BEYOND_LLSC
1811 Netlogic Microsystems XLR/XLS processors.
1814 bool "Netlogic XLP SoC"
1815 depends on SYS_HAS_CPU_XLP
1816 select CPU_SUPPORTS_32BIT_KERNEL
1817 select CPU_SUPPORTS_64BIT_KERNEL
1818 select CPU_SUPPORTS_HIGHMEM
1819 select WEAK_ORDERING
1820 select WEAK_REORDERING_BEYOND_LLSC
1821 select CPU_HAS_PREFETCH
1822 select CPU_HAS_LOAD_STORE_LR
1824 select CPU_SUPPORTS_HUGEPAGES
1825 select MIPS_ASID_BITS_VARIABLE
1827 Netlogic Microsystems XLP processors.
1830 config CPU_MIPS32_3_5_FEATURES
1831 bool "MIPS32 Release 3.5 Features"
1832 depends on SYS_HAS_CPU_MIPS32_R3_5
1833 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1835 Choose this option to build a kernel for release 2 or later of the
1836 MIPS32 architecture including features from the 3.5 release such as
1837 support for Enhanced Virtual Addressing (EVA).
1839 config CPU_MIPS32_3_5_EVA
1840 bool "Enhanced Virtual Addressing (EVA)"
1841 depends on CPU_MIPS32_3_5_FEATURES
1845 Choose this option if you want to enable the Enhanced Virtual
1846 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1847 One of its primary benefits is an increase in the maximum size
1848 of lowmem (up to 3GB). If unsure, say 'N' here.
1850 config CPU_MIPS32_R5_FEATURES
1851 bool "MIPS32 Release 5 Features"
1852 depends on SYS_HAS_CPU_MIPS32_R5
1853 depends on CPU_MIPS32_R2
1855 Choose this option to build a kernel for release 2 or later of the
1856 MIPS32 architecture including features from release 5 such as
1857 support for Extended Physical Addressing (XPA).
1859 config CPU_MIPS32_R5_XPA
1860 bool "Extended Physical Addressing (XPA)"
1861 depends on CPU_MIPS32_R5_FEATURES
1863 depends on !PAGE_SIZE_4KB
1864 depends on SYS_SUPPORTS_HIGHMEM
1867 select PHYS_ADDR_T_64BIT
1870 Choose this option if you want to enable the Extended Physical
1871 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1872 benefit is to increase physical addressing equal to or greater
1873 than 40 bits. Note that this has the side effect of turning on
1874 64-bit addressing which in turn makes the PTEs 64-bit in size.
1875 If unsure, say 'N' here.
1878 config CPU_NOP_WORKAROUNDS
1881 config CPU_JUMP_WORKAROUNDS
1884 config CPU_LOONGSON2F_WORKAROUNDS
1885 bool "Loongson 2F Workarounds"
1887 select CPU_NOP_WORKAROUNDS
1888 select CPU_JUMP_WORKAROUNDS
1890 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1891 require workarounds. Without workarounds the system may hang
1892 unexpectedly. For more information please refer to the gas
1893 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1895 Loongson 2F03 and later have fixed these issues and no workarounds
1896 are needed. The workarounds have no significant side effect on them
1897 but may decrease the performance of the system so this option should
1898 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1901 If unsure, please say Y.
1902 endif # CPU_LOONGSON2F
1904 config SYS_SUPPORTS_ZBOOT
1906 select HAVE_KERNEL_GZIP
1907 select HAVE_KERNEL_BZIP2
1908 select HAVE_KERNEL_LZ4
1909 select HAVE_KERNEL_LZMA
1910 select HAVE_KERNEL_LZO
1911 select HAVE_KERNEL_XZ
1913 config SYS_SUPPORTS_ZBOOT_UART16550
1915 select SYS_SUPPORTS_ZBOOT
1917 config SYS_SUPPORTS_ZBOOT_UART_PROM
1919 select SYS_SUPPORTS_ZBOOT
1921 config CPU_LOONGSON2EF
1923 select CPU_SUPPORTS_32BIT_KERNEL
1924 select CPU_SUPPORTS_64BIT_KERNEL
1925 select CPU_SUPPORTS_HIGHMEM
1926 select CPU_SUPPORTS_HUGEPAGES
1927 select ARCH_HAS_PHYS_TO_DMA
1928 select CPU_HAS_LOAD_STORE_LR
1930 config CPU_LOONGSON32
1934 select CPU_HAS_PREFETCH
1935 select CPU_HAS_LOAD_STORE_LR
1936 select CPU_SUPPORTS_32BIT_KERNEL
1937 select CPU_SUPPORTS_HIGHMEM
1938 select CPU_SUPPORTS_CPUFREQ
1940 config CPU_BMIPS32_3300
1941 select SMP_UP if SMP
1944 config CPU_BMIPS4350
1946 select SYS_SUPPORTS_SMP
1947 select SYS_SUPPORTS_HOTPLUG_CPU
1949 config CPU_BMIPS4380
1951 select MIPS_L1_CACHE_SHIFT_6
1952 select SYS_SUPPORTS_SMP
1953 select SYS_SUPPORTS_HOTPLUG_CPU
1956 config CPU_BMIPS5000
1958 select MIPS_CPU_SCACHE
1959 select MIPS_L1_CACHE_SHIFT_7
1960 select SYS_SUPPORTS_SMP
1961 select SYS_SUPPORTS_HOTPLUG_CPU
1964 config SYS_HAS_CPU_LOONGSON64
1966 select CPU_SUPPORTS_CPUFREQ
1969 config SYS_HAS_CPU_LOONGSON2E
1972 config SYS_HAS_CPU_LOONGSON2F
1974 select CPU_SUPPORTS_CPUFREQ
1975 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1977 config SYS_HAS_CPU_LOONGSON1B
1980 config SYS_HAS_CPU_LOONGSON1C
1983 config SYS_HAS_CPU_MIPS32_R1
1986 config SYS_HAS_CPU_MIPS32_R2
1989 config SYS_HAS_CPU_MIPS32_R3_5
1992 config SYS_HAS_CPU_MIPS32_R5
1994 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1996 config SYS_HAS_CPU_MIPS32_R6
1998 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2000 config SYS_HAS_CPU_MIPS64_R1
2003 config SYS_HAS_CPU_MIPS64_R2
2006 config SYS_HAS_CPU_MIPS64_R6
2008 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2010 config SYS_HAS_CPU_R3000
2013 config SYS_HAS_CPU_TX39XX
2016 config SYS_HAS_CPU_VR41XX
2019 config SYS_HAS_CPU_R4X00
2022 config SYS_HAS_CPU_TX49XX
2025 config SYS_HAS_CPU_R5000
2028 config SYS_HAS_CPU_R5500
2031 config SYS_HAS_CPU_NEVADA
2034 config SYS_HAS_CPU_R10000
2036 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2038 config SYS_HAS_CPU_RM7000
2041 config SYS_HAS_CPU_SB1
2044 config SYS_HAS_CPU_CAVIUM_OCTEON
2047 config SYS_HAS_CPU_BMIPS
2050 config SYS_HAS_CPU_BMIPS32_3300
2052 select SYS_HAS_CPU_BMIPS
2054 config SYS_HAS_CPU_BMIPS4350
2056 select SYS_HAS_CPU_BMIPS
2058 config SYS_HAS_CPU_BMIPS4380
2060 select SYS_HAS_CPU_BMIPS
2062 config SYS_HAS_CPU_BMIPS5000
2064 select SYS_HAS_CPU_BMIPS
2065 select ARCH_HAS_SYNC_DMA_FOR_CPU
2067 config SYS_HAS_CPU_XLR
2070 config SYS_HAS_CPU_XLP
2074 # CPU may reorder R->R, R->W, W->R, W->W
2075 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2077 config WEAK_ORDERING
2081 # CPU may reorder reads and writes beyond LL/SC
2082 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2084 config WEAK_REORDERING_BEYOND_LLSC
2089 # These two indicate any level of the MIPS32 and MIPS64 architecture
2093 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2097 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2100 # These indicate the revision of the architecture
2104 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2108 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2114 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2116 select HAVE_ARCH_BITREVERSE
2117 select MIPS_ASID_BITS_VARIABLE
2118 select MIPS_CRC_SUPPORT
2121 config TARGET_ISA_REV
2123 default 1 if CPU_MIPSR1
2124 default 2 if CPU_MIPSR2
2125 default 6 if CPU_MIPSR6
2128 Reflects the ISA revision being targeted by the kernel build. This
2129 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2137 config SYS_SUPPORTS_32BIT_KERNEL
2139 config SYS_SUPPORTS_64BIT_KERNEL
2141 config CPU_SUPPORTS_32BIT_KERNEL
2143 config CPU_SUPPORTS_64BIT_KERNEL
2145 config CPU_SUPPORTS_CPUFREQ
2147 config CPU_SUPPORTS_ADDRWINCFG
2149 config CPU_SUPPORTS_HUGEPAGES
2151 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2152 config MIPS_PGD_C0_CONTEXT
2154 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2157 # Set to y for ptrace access to watch registers.
2159 config HARDWARE_WATCHPOINTS
2161 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2166 prompt "Kernel code model"
2168 You should only select this option if you have a workload that
2169 actually benefits from 64-bit processing or if your machine has
2170 large memory. You will only be presented a single option in this
2171 menu if your system does not support both 32-bit and 64-bit kernels.
2174 bool "32-bit kernel"
2175 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2178 Select this option if you want to build a 32-bit kernel.
2181 bool "64-bit kernel"
2182 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2184 Select this option if you want to build a 64-bit kernel.
2189 bool "KVM Guest Kernel"
2190 depends on BROKEN_ON_SMP
2192 Select this option if building a guest kernel for KVM (Trap & Emulate)
2195 config KVM_GUEST_TIMER_FREQ
2196 int "Count/Compare Timer Frequency (MHz)"
2197 depends on KVM_GUEST
2200 Set this to non-zero if building a guest kernel for KVM to skip RTC
2201 emulation when determining guest CPU Frequency. Instead, the guest's
2202 timer frequency is specified directly.
2204 config MIPS_VA_BITS_48
2205 bool "48 bits virtual memory"
2208 Support a maximum at least 48 bits of application virtual
2209 memory. Default is 40 bits or less, depending on the CPU.
2210 For page sizes 16k and above, this option results in a small
2211 memory overhead for page tables. For 4k page size, a fourth
2212 level of page tables is added which imposes both a memory
2213 overhead as well as slower TLB fault handling.
2218 prompt "Kernel page size"
2219 default PAGE_SIZE_4KB
2221 config PAGE_SIZE_4KB
2223 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2225 This option select the standard 4kB Linux page size. On some
2226 R3000-family processors this is the only available page size. Using
2227 4kB page size will minimize memory consumption and is therefore
2228 recommended for low memory systems.
2230 config PAGE_SIZE_8KB
2232 depends on CPU_CAVIUM_OCTEON
2233 depends on !MIPS_VA_BITS_48
2235 Using 8kB page size will result in higher performance kernel at
2236 the price of higher memory consumption. This option is available
2237 only on cnMIPS processors. Note that you will need a suitable Linux
2238 distribution to support this.
2240 config PAGE_SIZE_16KB
2242 depends on !CPU_R3000 && !CPU_TX39XX
2244 Using 16kB page size will result in higher performance kernel at
2245 the price of higher memory consumption. This option is available on
2246 all non-R3000 family processors. Note that you will need a suitable
2247 Linux distribution to support this.
2249 config PAGE_SIZE_32KB
2251 depends on CPU_CAVIUM_OCTEON
2252 depends on !MIPS_VA_BITS_48
2254 Using 32kB page size will result in higher performance kernel at
2255 the price of higher memory consumption. This option is available
2256 only on cnMIPS cores. Note that you will need a suitable Linux
2257 distribution to support this.
2259 config PAGE_SIZE_64KB
2261 depends on !CPU_R3000 && !CPU_TX39XX
2263 Using 64kB page size will result in higher performance kernel at
2264 the price of higher memory consumption. This option is available on
2265 all non-R3000 family processor. Not that at the time of this
2266 writing this option is still high experimental.
2270 config FORCE_MAX_ZONEORDER
2271 int "Maximum zone order"
2272 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2273 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2274 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2275 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2276 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2277 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2281 The kernel memory allocator divides physically contiguous memory
2282 blocks into "zones", where each zone is a power of two number of
2283 pages. This option selects the largest power of two that the kernel
2284 keeps in the memory allocator. If you need to allocate very large
2285 blocks of physically contiguous memory, then you may need to
2286 increase this value.
2288 This config option is actually maximum order plus one. For example,
2289 a value of 11 means that the largest free memory block is 2^10 pages.
2291 The page size is not necessarily 4KB. Keep this in mind
2292 when choosing a value for this option.
2297 config IP22_CPU_SCACHE
2302 # Support for a MIPS32 / MIPS64 style S-caches
2304 config MIPS_CPU_SCACHE
2308 config R5000_CPU_SCACHE
2312 config RM7000_CPU_SCACHE
2316 config SIBYTE_DMA_PAGEOPS
2317 bool "Use DMA to clear/copy pages"
2320 Instead of using the CPU to zero and copy pages, use a Data Mover
2321 channel. These DMA channels are otherwise unused by the standard
2322 SiByte Linux port. Seems to give a small performance benefit.
2324 config CPU_HAS_PREFETCH
2327 config CPU_GENERIC_DUMP_TLB
2329 default y if !(CPU_R3000 || CPU_TX39XX)
2331 config MIPS_FP_SUPPORT
2332 bool "Floating Point support" if EXPERT
2335 Select y to include support for floating point in the kernel
2336 including initialization of FPU hardware, FP context save & restore
2337 and emulation of an FPU where necessary. Without this support any
2338 userland program attempting to use floating point instructions will
2341 If you know that your userland will not attempt to use floating point
2342 instructions then you can say n here to shrink the kernel a little.
2346 config CPU_R2300_FPU
2348 depends on MIPS_FP_SUPPORT
2349 default y if CPU_R3000 || CPU_TX39XX
2356 depends on MIPS_FP_SUPPORT
2357 default y if !CPU_R2300_FPU
2359 config CPU_R4K_CACHE_TLB
2361 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2364 bool "MIPS MT SMP support (1 TC on each available VPE)"
2366 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2367 select CPU_MIPSR2_IRQ_VI
2368 select CPU_MIPSR2_IRQ_EI
2373 select SYS_SUPPORTS_SMP
2374 select SYS_SUPPORTS_SCHED_SMT
2375 select MIPS_PERF_SHARED_TC_COUNTERS
2377 This is a kernel model which is known as SMVP. This is supported
2378 on cores with the MT ASE and uses the available VPEs to implement
2379 virtual processors which supports SMP. This is equivalent to the
2380 Intel Hyperthreading feature. For further information go to
2381 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2387 bool "SMT (multithreading) scheduler support"
2388 depends on SYS_SUPPORTS_SCHED_SMT
2391 SMT scheduler support improves the CPU scheduler's decision making
2392 when dealing with MIPS MT enabled cores at a cost of slightly
2393 increased overhead in some places. If unsure say N here.
2395 config SYS_SUPPORTS_SCHED_SMT
2398 config SYS_SUPPORTS_MULTITHREADING
2401 config MIPS_MT_FPAFF
2402 bool "Dynamic FPU affinity for FP-intensive threads"
2404 depends on MIPS_MT_SMP
2406 config MIPSR2_TO_R6_EMULATOR
2407 bool "MIPS R2-to-R6 emulator"
2408 depends on CPU_MIPSR6
2409 depends on MIPS_FP_SUPPORT
2412 Choose this option if you want to run non-R6 MIPS userland code.
2413 Even if you say 'Y' here, the emulator will still be disabled by
2414 default. You can enable it using the 'mipsr2emu' kernel option.
2415 The only reason this is a build-time option is to save ~14K from the
2418 config SYS_SUPPORTS_VPE_LOADER
2420 depends on SYS_SUPPORTS_MULTITHREADING
2422 Indicates that the platform supports the VPE loader, and provides
2425 config MIPS_VPE_LOADER
2426 bool "VPE loader support."
2427 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2428 select CPU_MIPSR2_IRQ_VI
2429 select CPU_MIPSR2_IRQ_EI
2432 Includes a loader for loading an elf relocatable object
2433 onto another VPE and running it.
2435 config MIPS_VPE_LOADER_CMP
2438 depends on MIPS_VPE_LOADER && MIPS_CMP
2440 config MIPS_VPE_LOADER_MT
2443 depends on MIPS_VPE_LOADER && !MIPS_CMP
2445 config MIPS_VPE_LOADER_TOM
2446 bool "Load VPE program into memory hidden from linux"
2447 depends on MIPS_VPE_LOADER
2450 The loader can use memory that is present but has been hidden from
2451 Linux using the kernel command line option "mem=xxMB". It's up to
2452 you to ensure the amount you put in the option and the space your
2453 program requires is less or equal to the amount physically present.
2455 config MIPS_VPE_APSP_API
2456 bool "Enable support for AP/SP API (RTLX)"
2457 depends on MIPS_VPE_LOADER
2459 config MIPS_VPE_APSP_API_CMP
2462 depends on MIPS_VPE_APSP_API && MIPS_CMP
2464 config MIPS_VPE_APSP_API_MT
2467 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2470 bool "MIPS CMP framework support (DEPRECATED)"
2471 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2474 select SYS_SUPPORTS_SMP
2475 select WEAK_ORDERING
2478 Select this if you are using a bootloader which implements the "CMP
2479 framework" protocol (ie. YAMON) and want your kernel to make use of
2480 its ability to start secondary CPUs.
2482 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2486 bool "MIPS Coherent Processing System support"
2487 depends on SYS_SUPPORTS_MIPS_CPS
2489 select MIPS_CPS_PM if HOTPLUG_CPU
2491 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2492 select SYS_SUPPORTS_HOTPLUG_CPU
2493 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2494 select SYS_SUPPORTS_SMP
2495 select WEAK_ORDERING
2497 Select this if you wish to run an SMP kernel across multiple cores
2498 within a MIPS Coherent Processing System. When this option is
2499 enabled the kernel will probe for other cores and boot them with
2500 no external assistance. It is safe to enable this when hardware
2501 support is unavailable.
2514 config SB1_PASS_2_WORKAROUNDS
2516 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2519 config SB1_PASS_2_1_WORKAROUNDS
2521 depends on CPU_SB1 && CPU_SB1_PASS_2
2525 prompt "SmartMIPS or microMIPS ASE support"
2527 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2530 Select this if you want neither microMIPS nor SmartMIPS support
2532 config CPU_HAS_SMARTMIPS
2533 depends on SYS_SUPPORTS_SMARTMIPS
2536 SmartMIPS is a extension of the MIPS32 architecture aimed at
2537 increased security at both hardware and software level for
2538 smartcards. Enabling this option will allow proper use of the
2539 SmartMIPS instructions by Linux applications. However a kernel with
2540 this option will not work on a MIPS core without SmartMIPS core. If
2541 you don't know you probably don't have SmartMIPS and should say N
2544 config CPU_MICROMIPS
2545 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2548 When this option is enabled the kernel will be built using the
2554 bool "Support for the MIPS SIMD Architecture"
2555 depends on CPU_SUPPORTS_MSA
2556 depends on MIPS_FP_SUPPORT
2557 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2559 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2560 and a set of SIMD instructions to operate on them. When this option
2561 is enabled the kernel will support allocating & switching MSA
2562 vector register contexts. If you know that your kernel will only be
2563 running on CPUs which do not support MSA or that your userland will
2564 not be making use of it then you may wish to say N here to reduce
2565 the size & complexity of your kernel.
2578 config CPU_HAS_LOAD_STORE_LR
2581 CPU has support for unaligned load and store instructions:
2582 LWL, LWR, SWL, SWR (Load/store word left/right).
2583 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2586 # Vectored interrupt mode is an R2 feature
2588 config CPU_MIPSR2_IRQ_VI
2592 # Extended interrupt mode is an R2 feature
2594 config CPU_MIPSR2_IRQ_EI
2599 depends on !CPU_R3000
2605 config CPU_DADDI_WORKAROUNDS
2608 config CPU_R4000_WORKAROUNDS
2610 select CPU_R4400_WORKAROUNDS
2612 config CPU_R4400_WORKAROUNDS
2615 config CPU_R4X00_BUGS64
2617 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2619 config MIPS_ASID_SHIFT
2621 default 6 if CPU_R3000 || CPU_TX39XX
2624 config MIPS_ASID_BITS
2626 default 0 if MIPS_ASID_BITS_VARIABLE
2627 default 6 if CPU_R3000 || CPU_TX39XX
2630 config MIPS_ASID_BITS_VARIABLE
2633 config MIPS_CRC_SUPPORT
2637 # - Highmem only makes sense for the 32-bit kernel.
2638 # - The current highmem code will only work properly on physically indexed
2639 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2640 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2641 # moment we protect the user and offer the highmem option only on machines
2642 # where it's known to be safe. This will not offer highmem on a few systems
2643 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2644 # indexed CPUs but we're playing safe.
2645 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2646 # know they might have memory configurations that could make use of highmem
2650 bool "High Memory Support"
2651 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2653 config CPU_SUPPORTS_HIGHMEM
2656 config SYS_SUPPORTS_HIGHMEM
2659 config SYS_SUPPORTS_SMARTMIPS
2662 config SYS_SUPPORTS_MICROMIPS
2665 config SYS_SUPPORTS_MIPS16
2668 This option must be set if a kernel might be executed on a MIPS16-
2669 enabled CPU even if MIPS16 is not actually being used. In other
2670 words, it makes the kernel MIPS16-tolerant.
2672 config CPU_SUPPORTS_MSA
2675 config ARCH_FLATMEM_ENABLE
2677 depends on !NUMA && !CPU_LOONGSON2EF
2679 config ARCH_SPARSEMEM_ENABLE
2681 select SPARSEMEM_STATIC if !SGI_IP27
2685 depends on SYS_SUPPORTS_NUMA
2687 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2688 Access). This option improves performance on systems with more
2689 than two nodes; on two node systems it is generally better to
2690 leave it disabled; on single node systems disable this option
2693 config SYS_SUPPORTS_NUMA
2697 bool "Relocatable kernel"
2698 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2700 This builds a kernel image that retains relocation information
2701 so it can be loaded someplace besides the default 1MB.
2702 The relocations make the kernel binary about 15% larger,
2703 but are discarded at runtime
2705 config RELOCATION_TABLE_SIZE
2706 hex "Relocation table size"
2707 depends on RELOCATABLE
2708 range 0x0 0x01000000
2709 default "0x00100000"
2711 A table of relocation data will be appended to the kernel binary
2712 and parsed at boot to fix up the relocated kernel.
2714 This option allows the amount of space reserved for the table to be
2715 adjusted, although the default of 1Mb should be ok in most cases.
2717 The build will fail and a valid size suggested if this is too small.
2719 If unsure, leave at the default value.
2721 config RANDOMIZE_BASE
2722 bool "Randomize the address of the kernel image"
2723 depends on RELOCATABLE
2725 Randomizes the physical and virtual address at which the
2726 kernel image is loaded, as a security feature that
2727 deters exploit attempts relying on knowledge of the location
2728 of kernel internals.
2730 Entropy is generated using any coprocessor 0 registers available.
2732 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2736 config RANDOMIZE_BASE_MAX_OFFSET
2737 hex "Maximum kASLR offset" if EXPERT
2738 depends on RANDOMIZE_BASE
2739 range 0x0 0x40000000 if EVA || 64BIT
2740 range 0x0 0x08000000
2741 default "0x01000000"
2743 When kASLR is active, this provides the maximum offset that will
2744 be applied to the kernel image. It should be set according to the
2745 amount of physical RAM available in the target system minus
2746 PHYSICAL_START and must be a power of 2.
2748 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2749 EVA or 64-bit. The default is 16Mb.
2754 depends on NEED_MULTIPLE_NODES
2756 config HW_PERF_EVENTS
2757 bool "Enable hardware performance counter support for perf events"
2758 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2761 Enable hardware performance counter support for perf events. If
2762 disabled, perf events will use software events only.
2765 bool "Multi-Processing support"
2766 depends on SYS_SUPPORTS_SMP
2768 This enables support for systems with more than one CPU. If you have
2769 a system with only one CPU, say N. If you have a system with more
2770 than one CPU, say Y.
2772 If you say N here, the kernel will run on uni- and multiprocessor
2773 machines, but will use only one CPU of a multiprocessor machine. If
2774 you say Y here, the kernel will run on many, but not all,
2775 uniprocessor machines. On a uniprocessor machine, the kernel
2776 will run faster if you say N here.
2778 People using multiprocessor machines who say Y here should also say
2779 Y to "Enhanced Real Time Clock Support", below.
2781 See also the SMP-HOWTO available at
2782 <http://www.tldp.org/docs.html#howto>.
2784 If you don't know what to do here, say N.
2787 bool "Support for hot-pluggable CPUs"
2788 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2790 Say Y here to allow turning CPUs off and on. CPUs can be
2791 controlled through /sys/devices/system/cpu.
2792 (Note: power management support will enable this option
2793 automatically on SMP systems. )
2794 Say N if you want to disable CPU hotplug.
2799 config SYS_SUPPORTS_MIPS_CMP
2802 config SYS_SUPPORTS_MIPS_CPS
2805 config SYS_SUPPORTS_SMP
2808 config NR_CPUS_DEFAULT_4
2811 config NR_CPUS_DEFAULT_8
2814 config NR_CPUS_DEFAULT_16
2817 config NR_CPUS_DEFAULT_32
2820 config NR_CPUS_DEFAULT_64
2824 int "Maximum number of CPUs (2-256)"
2827 default "4" if NR_CPUS_DEFAULT_4
2828 default "8" if NR_CPUS_DEFAULT_8
2829 default "16" if NR_CPUS_DEFAULT_16
2830 default "32" if NR_CPUS_DEFAULT_32
2831 default "64" if NR_CPUS_DEFAULT_64
2833 This allows you to specify the maximum number of CPUs which this
2834 kernel will support. The maximum supported value is 32 for 32-bit
2835 kernel and 64 for 64-bit kernels; the minimum value which makes
2836 sense is 1 for Qemu (useful only for kernel debugging purposes)
2837 and 2 for all others.
2839 This is purely to save memory - each supported CPU adds
2840 approximately eight kilobytes to the kernel image. For best
2841 performance should round up your number of processors to the next
2844 config MIPS_PERF_SHARED_TC_COUNTERS
2847 config MIPS_NR_CPU_NR_MAP_1024
2850 config MIPS_NR_CPU_NR_MAP
2853 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2854 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2857 # Timer Interrupt Frequency Configuration
2861 prompt "Timer frequency"
2864 Allows the configuration of the timer frequency.
2867 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2870 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2873 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2876 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2879 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2882 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2885 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2888 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2892 config SYS_SUPPORTS_24HZ
2895 config SYS_SUPPORTS_48HZ
2898 config SYS_SUPPORTS_100HZ
2901 config SYS_SUPPORTS_128HZ
2904 config SYS_SUPPORTS_250HZ
2907 config SYS_SUPPORTS_256HZ
2910 config SYS_SUPPORTS_1000HZ
2913 config SYS_SUPPORTS_1024HZ
2916 config SYS_SUPPORTS_ARBIT_HZ
2918 default y if !SYS_SUPPORTS_24HZ && \
2919 !SYS_SUPPORTS_48HZ && \
2920 !SYS_SUPPORTS_100HZ && \
2921 !SYS_SUPPORTS_128HZ && \
2922 !SYS_SUPPORTS_250HZ && \
2923 !SYS_SUPPORTS_256HZ && \
2924 !SYS_SUPPORTS_1000HZ && \
2925 !SYS_SUPPORTS_1024HZ
2931 default 100 if HZ_100
2932 default 128 if HZ_128
2933 default 250 if HZ_250
2934 default 256 if HZ_256
2935 default 1000 if HZ_1000
2936 default 1024 if HZ_1024
2939 def_bool HIGH_RES_TIMERS
2942 bool "Kexec system call"
2945 kexec is a system call that implements the ability to shutdown your
2946 current kernel, and to start another kernel. It is like a reboot
2947 but it is independent of the system firmware. And like a reboot
2948 you can start any kernel with it, not just Linux.
2950 The name comes from the similarity to the exec system call.
2952 It is an ongoing process to be certain the hardware in a machine
2953 is properly shutdown, so do not be surprised if this code does not
2954 initially work for you. As of this writing the exact hardware
2955 interface is strongly in flux, so no good recommendation can be
2959 bool "Kernel crash dumps"
2961 Generate crash dump after being started by kexec.
2962 This should be normally only set in special crash dump kernels
2963 which are loaded in the main kernel with kexec-tools into
2964 a specially reserved region and then later executed after
2965 a crash by kdump/kexec. The crash dump kernel must be compiled
2966 to a memory address not used by the main kernel or firmware using
2969 config PHYSICAL_START
2970 hex "Physical address where the kernel is loaded"
2971 default "0xffffffff84000000"
2972 depends on CRASH_DUMP
2974 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2975 If you plan to use kernel for capturing the crash dump change
2976 this value to start of the reserved region (the "X" value as
2977 specified in the "crashkernel=YM@XM" command line boot parameter
2978 passed to the panic-ed kernel).
2981 bool "Enable seccomp to safely compute untrusted bytecode"
2985 This kernel feature is useful for number crunching applications
2986 that may need to compute untrusted bytecode during their
2987 execution. By using pipes or other transports made available to
2988 the process as file descriptors supporting the read/write
2989 syscalls, it's possible to isolate those applications in
2990 their own address space using seccomp. Once seccomp is
2991 enabled via /proc/<pid>/seccomp, it cannot be disabled
2992 and the task is only allowed to execute a few safe syscalls
2993 defined by each seccomp mode.
2995 If unsure, say Y. Only embedded should say N here.
2997 config MIPS_O32_FP64_SUPPORT
2998 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2999 depends on 32BIT || MIPS32_O32
3001 When this is enabled, the kernel will support use of 64-bit floating
3002 point registers with binaries using the O32 ABI along with the
3003 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3004 32-bit MIPS systems this support is at the cost of increasing the
3005 size and complexity of the compiled FPU emulator. Thus if you are
3006 running a MIPS32 system and know that none of your userland binaries
3007 will require 64-bit floating point, you may wish to reduce the size
3008 of your kernel & potentially improve FP emulation performance by
3011 Although binutils currently supports use of this flag the details
3012 concerning its effect upon the O32 ABI in userland are still being
3013 worked on. In order to avoid userland becoming dependant upon current
3014 behaviour before the details have been finalised, this option should
3015 be considered experimental and only enabled by those working upon
3023 select OF_EARLY_FLATTREE
3033 prompt "Kernel appended dtb support" if USE_OF
3034 default MIPS_NO_APPENDED_DTB
3036 config MIPS_NO_APPENDED_DTB
3039 Do not enable appended dtb support.
3041 config MIPS_ELF_APPENDED_DTB
3044 With this option, the boot code will look for a device tree binary
3045 DTB) included in the vmlinux ELF section .appended_dtb. By default
3046 it is empty and the DTB can be appended using binutils command
3049 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3051 This is meant as a backward compatiblity convenience for those
3052 systems with a bootloader that can't be upgraded to accommodate
3053 the documented boot protocol using a device tree.
3055 config MIPS_RAW_APPENDED_DTB
3056 bool "vmlinux.bin or vmlinuz.bin"
3058 With this option, the boot code will look for a device tree binary
3059 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3060 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3062 This is meant as a backward compatibility convenience for those
3063 systems with a bootloader that can't be upgraded to accommodate
3064 the documented boot protocol using a device tree.
3066 Beware that there is very little in terms of protection against
3067 this option being confused by leftover garbage in memory that might
3068 look like a DTB header after a reboot if no actual DTB is appended
3069 to vmlinux.bin. Do not leave this option active in a production kernel
3070 if you don't intend to always append a DTB.
3074 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3075 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3078 default MIPS_CMDLINE_FROM_BOOTLOADER
3080 config MIPS_CMDLINE_FROM_DTB
3082 bool "Dtb kernel arguments if available"
3084 config MIPS_CMDLINE_DTB_EXTEND
3086 bool "Extend dtb kernel arguments with bootloader arguments"
3088 config MIPS_CMDLINE_FROM_BOOTLOADER
3089 bool "Bootloader kernel arguments if available"
3091 config MIPS_CMDLINE_BUILTIN_EXTEND
3092 depends on CMDLINE_BOOL
3093 bool "Extend builtin kernel arguments with bootloader arguments"
3098 config LOCKDEP_SUPPORT
3102 config STACKTRACE_SUPPORT
3106 config PGTABLE_LEVELS
3108 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3109 default 3 if 64BIT && !PAGE_SIZE_64KB
3112 config MIPS_AUTO_PFN_OFFSET
3115 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3117 config PCI_DRIVERS_GENERIC
3118 select PCI_DOMAINS_GENERIC if PCI
3121 config PCI_DRIVERS_LEGACY
3122 def_bool !PCI_DRIVERS_GENERIC
3123 select NO_GENERIC_PCI_IOPORT_MAP
3124 select PCI_DOMAINS if PCI
3127 # ISA support is now enabled via select. Too many systems still have the one
3128 # or other ISA chip on the board that users don't know about so don't expect
3129 # users to choose the right thing ...
3135 bool "TURBOchannel support"
3136 depends on MACH_DECSTATION
3138 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3139 processors. TURBOchannel programming specifications are available
3141 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3143 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3144 Linux driver support status is documented at:
3145 <http://www.linux-mips.org/wiki/DECstation>
3151 config ARCH_MMAP_RND_BITS_MIN
3155 config ARCH_MMAP_RND_BITS_MAX
3159 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3162 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3169 select MIPS_EXTERNAL_TIMER
3182 config MIPS32_COMPAT
3188 config SYSVIPC_COMPAT
3192 bool "Kernel support for o32 binaries"
3194 select ARCH_WANT_OLD_COMPAT_IPC
3196 select MIPS32_COMPAT
3197 select SYSVIPC_COMPAT if SYSVIPC
3199 Select this option if you want to run o32 binaries. These are pure
3200 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3201 existing binaries are in this format.
3206 bool "Kernel support for n32 binaries"
3208 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3210 select MIPS32_COMPAT
3211 select SYSVIPC_COMPAT if SYSVIPC
3213 Select this option if you want to run n32 binaries. These are
3214 64-bit binaries using 32-bit quantities for addressing and certain
3215 data that would normally be 64-bit. They are used in special
3222 default y if MIPS32_O32 || MIPS32_N32
3225 menu "Power management options"
3227 config ARCH_HIBERNATION_POSSIBLE
3229 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3231 config ARCH_SUSPEND_POSSIBLE
3233 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3235 source "kernel/power/Kconfig"
3239 config MIPS_EXTERNAL_TIMER
3242 menu "CPU Power Management"
3244 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3245 source "drivers/cpufreq/Kconfig"
3248 source "drivers/cpuidle/Kconfig"
3252 source "drivers/firmware/Kconfig"
3254 source "arch/mips/kvm/Kconfig"