1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_SUPPORTS_UPROBES
11 select ARCH_USE_BUILTIN_BSWAP
12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 select ARCH_USE_QUEUED_RWLOCKS
14 select ARCH_USE_QUEUED_SPINLOCKS
15 select ARCH_WANT_IPC_PARSE_VERSION
16 select BUILDTIME_EXTABLE_SORT
17 select CLONE_BACKWARDS
18 select CPU_PM if CPU_IDLE
20 select GENERIC_ATOMIC64 if !64BIT
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_CMOS_UPDATE
23 select GENERIC_CPU_AUTOPROBE
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_ISA_DMA if EISA
28 select GENERIC_LIB_ASHLDI3
29 select GENERIC_LIB_ASHRDI3
30 select GENERIC_LIB_CMPDI2
31 select GENERIC_LIB_LSHRDI3
32 select GENERIC_LIB_UCMPDI2
33 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
34 select GENERIC_SMP_IDLE_THREAD
35 select GENERIC_TIME_VSYSCALL
36 select HANDLE_DOMAIN_IRQ
37 select HAVE_ARCH_COMPILER_H
38 select HAVE_ARCH_JUMP_LABEL
40 select HAVE_ARCH_MMAP_RND_BITS if MMU
41 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
42 select HAVE_ARCH_SECCOMP_FILTER
43 select HAVE_ARCH_TRACEHOOK
44 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
45 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
46 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
47 select HAVE_CONTEXT_TRACKING
48 select HAVE_COPY_THREAD_TLS
49 select HAVE_C_RECORDMCOUNT
50 select HAVE_DEBUG_KMEMLEAK
51 select HAVE_DEBUG_STACKOVERFLOW
52 select HAVE_DMA_CONTIGUOUS
53 select HAVE_DYNAMIC_FTRACE
54 select HAVE_EXIT_THREAD
55 select HAVE_FTRACE_MCOUNT_RECORD
56 select HAVE_FUNCTION_GRAPH_TRACER
57 select HAVE_FUNCTION_TRACER
58 select HAVE_GENERIC_DMA_COHERENT
60 select HAVE_IRQ_EXIT_ON_IRQ_STACK
61 select HAVE_IRQ_TIME_ACCOUNTING
63 select HAVE_KRETPROBES
64 select HAVE_MEMBLOCK_NODE_MAP
65 select HAVE_MOD_ARCH_SPECIFIC
68 select HAVE_PERF_EVENTS
69 select HAVE_REGS_AND_STACK_ACCESS_API
71 select HAVE_STACKPROTECTOR
72 select HAVE_SYSCALL_TRACEPOINTS
73 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
74 select IRQ_FORCED_THREADING
76 select MODULES_USE_ELF_RELA if MODULES && 64BIT
77 select MODULES_USE_ELF_REL if MODULES
78 select PERF_USE_VMALLOC
80 select SYSCTL_EXCEPTION_TRACE
83 menu "Machine selection"
90 bool "Generic board-agnostic MIPS kernel"
94 select CLKSRC_MIPS_GIC
96 select CPU_MIPSR2_IRQ_VI
97 select CPU_MIPSR2_IRQ_EI
99 select DMA_PERDEV_COHERENT
103 select MIPS_AUTO_PFN_OFFSET
104 select MIPS_CPU_SCACHE
106 select MIPS_L1_CACHE_SHIFT_7
107 select NO_EXCEPT_FILL
108 select PCI_DRIVERS_GENERIC
112 select SYS_HAS_CPU_MIPS32_R1
113 select SYS_HAS_CPU_MIPS32_R2
114 select SYS_HAS_CPU_MIPS32_R6
115 select SYS_HAS_CPU_MIPS64_R1
116 select SYS_HAS_CPU_MIPS64_R2
117 select SYS_HAS_CPU_MIPS64_R6
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL
120 select SYS_SUPPORTS_BIG_ENDIAN
121 select SYS_SUPPORTS_HIGHMEM
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select SYS_SUPPORTS_MICROMIPS
124 select SYS_SUPPORTS_MIPS_CPS
125 select SYS_SUPPORTS_MIPS16
126 select SYS_SUPPORTS_MULTITHREADING
127 select SYS_SUPPORTS_RELOCATABLE
128 select SYS_SUPPORTS_SMARTMIPS
129 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
130 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
132 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
133 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
134 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
138 Select this to build a kernel which aims to support multiple boards,
139 generally using a flattened device tree passed from the bootloader
140 using the boot protocol defined in the UHI (Unified Hosting
141 Interface) specification.
144 bool "Alchemy processor based machines"
145 select PHYS_ADDR_T_64BIT
149 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
150 select SYS_HAS_CPU_MIPS32_R1
151 select SYS_SUPPORTS_32BIT_KERNEL
152 select SYS_SUPPORTS_APM_EMULATION
154 select SYS_SUPPORTS_ZBOOT
158 bool "Texas Instruments AR7"
160 select DMA_NONCOHERENT
164 select NO_EXCEPT_FILL
166 select SYS_HAS_CPU_MIPS32_R1
167 select SYS_HAS_EARLY_PRINTK
168 select SYS_SUPPORTS_32BIT_KERNEL
169 select SYS_SUPPORTS_LITTLE_ENDIAN
170 select SYS_SUPPORTS_MIPS16
171 select SYS_SUPPORTS_ZBOOT_UART16550
176 Support for the Texas Instruments AR7 System-on-a-Chip
177 family: TNETD7100, 7200 and 7300.
180 bool "Atheros AR231x/AR531x SoC support"
183 select DMA_NONCOHERENT
186 select SYS_HAS_CPU_MIPS32_R1
187 select SYS_SUPPORTS_BIG_ENDIAN
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_HAS_EARLY_PRINTK
191 Support for Atheros AR231x and Atheros AR531x based boards
194 bool "Atheros AR71XX/AR724X/AR913X based boards"
195 select ARCH_HAS_RESET_CONTROLLER
199 select DMA_NONCOHERENT
207 select SYS_HAS_CPU_MIPS32_R2
208 select SYS_HAS_EARLY_PRINTK
209 select SYS_SUPPORTS_32BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_SUPPORTS_MIPS16
212 select SYS_SUPPORTS_ZBOOT_UART_PROM
214 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
216 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
219 bool "Broadcom Generic BMIPS kernel"
220 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
221 select ARCH_HAS_PHYS_TO_DMA
223 select NO_EXCEPT_FILL
229 select BCM6345_L1_IRQ
230 select BCM7038_L1_IRQ
231 select BCM7120_L2_IRQ
232 select BRCMSTB_L2_IRQ
234 select DMA_NONCOHERENT
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_HIGHMEM
239 select SYS_HAS_CPU_BMIPS32_3300
240 select SYS_HAS_CPU_BMIPS4350
241 select SYS_HAS_CPU_BMIPS4380
242 select SYS_HAS_CPU_BMIPS5000
244 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
247 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
248 select HARDIRQS_SW_RESEND
250 Build a generic DT-based kernel image that boots on select
251 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
252 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
253 must be set appropriately for your board.
256 bool "Broadcom BCM47XX based boards"
260 select DMA_NONCOHERENT
263 select SYS_HAS_CPU_MIPS32_R1
264 select NO_EXCEPT_FILL
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_SUPPORTS_MIPS16
268 select SYS_SUPPORTS_ZBOOT
269 select SYS_HAS_EARLY_PRINTK
270 select USE_GENERIC_EARLY_PRINTK_8250
272 select LEDS_GPIO_REGISTER
275 select BCM47XX_SSB if !BCM47XX_BCMA
277 Support for BCM47XX based boards
280 bool "Broadcom BCM63XX based boards"
285 select DMA_NONCOHERENT
287 select SYS_SUPPORTS_32BIT_KERNEL
288 select SYS_SUPPORTS_BIG_ENDIAN
289 select SYS_HAS_EARLY_PRINTK
293 select MIPS_L1_CACHE_SHIFT_4
296 Support for BCM63XX based boards
303 select DMA_NONCOHERENT
309 select PCI_GT64XXX_PCI0
310 select SYS_HAS_CPU_NEVADA
311 select SYS_HAS_EARLY_PRINTK
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_64BIT_KERNEL
314 select SYS_SUPPORTS_LITTLE_ENDIAN
315 select USE_GENERIC_EARLY_PRINTK_8250
317 config MACH_DECSTATION
321 select CEVT_R4K if CPU_R4X00
323 select CSRC_R4K if CPU_R4X00
324 select CPU_DADDI_WORKAROUNDS if 64BIT
325 select CPU_R4000_WORKAROUNDS if 64BIT
326 select CPU_R4400_WORKAROUNDS if 64BIT
327 select DMA_NONCOHERENT
330 select SYS_HAS_CPU_R3000
331 select SYS_HAS_CPU_R4X00
332 select SYS_SUPPORTS_32BIT_KERNEL
333 select SYS_SUPPORTS_64BIT_KERNEL
334 select SYS_SUPPORTS_LITTLE_ENDIAN
335 select SYS_SUPPORTS_128HZ
336 select SYS_SUPPORTS_256HZ
337 select SYS_SUPPORTS_1024HZ
338 select MIPS_L1_CACHE_SHIFT_4
340 This enables support for DEC's MIPS based workstations. For details
341 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
342 DECstation porting pages on <http://decstation.unix-ag.org/>.
344 If you have one of the following DECstation Models you definitely
345 want to choose R4xx0 for the CPU Type:
352 otherwise choose R3000.
355 bool "Jazz family of machines"
356 select ARCH_MIGHT_HAVE_PC_PARPORT
357 select ARCH_MIGHT_HAVE_PC_SERIO
360 select ARCH_MAY_HAVE_PC_FDC
363 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
364 select GENERIC_ISA_DMA
365 select HAVE_PCSPKR_PLATFORM
370 select SYS_HAS_CPU_R4X00
371 select SYS_SUPPORTS_32BIT_KERNEL
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_100HZ
375 This a family of machines based on the MIPS R4030 chipset which was
376 used by several vendors to build RISC/os and Windows NT workstations.
377 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
378 Olivetti M700-10 workstations.
381 bool "Ingenic SoC based machines"
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_LITTLE_ENDIAN
384 select SYS_SUPPORTS_ZBOOT_UART16550
385 select DMA_NONCOHERENT
390 select GENERIC_IRQ_CHIP
396 bool "Lantiq based platforms"
397 select DMA_NONCOHERENT
401 select SYS_HAS_CPU_MIPS32_R1
402 select SYS_HAS_CPU_MIPS32_R2
403 select SYS_SUPPORTS_BIG_ENDIAN
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_MIPS16
406 select SYS_SUPPORTS_MULTITHREADING
407 select SYS_SUPPORTS_VPE_LOADER
408 select SYS_HAS_EARLY_PRINTK
415 select PINCTRL_LANTIQ
416 select ARCH_HAS_RESET_CONTROLLER
417 select RESET_CONTROLLER
420 bool "LASAT Networks platforms"
424 select DMA_NONCOHERENT
425 select SYS_HAS_EARLY_PRINTK
428 select PCI_GT64XXX_PCI0
430 select R5000_CPU_SCACHE
431 select SYS_HAS_CPU_R5000
432 select SYS_SUPPORTS_32BIT_KERNEL
433 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
434 select SYS_SUPPORTS_LITTLE_ENDIAN
436 config MACH_LOONGSON32
437 bool "Loongson-1 family of machines"
438 select SYS_SUPPORTS_ZBOOT
440 This enables support for the Loongson-1 family of machines.
442 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
443 the Institute of Computing Technology (ICT), Chinese Academy of
446 config MACH_LOONGSON64
447 bool "Loongson-2/3 family of machines"
448 select SYS_SUPPORTS_ZBOOT
450 This enables the support of Loongson-2/3 family of machines.
452 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
453 family of multi-core CPUs. They are both 64-bit general-purpose
454 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
455 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
456 in the People's Republic of China. The chief architect is Professor
459 config MACH_PISTACHIO
460 bool "IMG Pistachio SoC based boards"
464 select CLKSRC_MIPS_GIC
467 select DMA_NONCOHERENT
472 select MIPS_CPU_SCACHE
476 select SYS_HAS_CPU_MIPS32_R2
477 select SYS_SUPPORTS_32BIT_KERNEL
478 select SYS_SUPPORTS_LITTLE_ENDIAN
479 select SYS_SUPPORTS_MIPS_CPS
480 select SYS_SUPPORTS_MULTITHREADING
481 select SYS_SUPPORTS_RELOCATABLE
482 select SYS_SUPPORTS_ZBOOT
483 select SYS_HAS_EARLY_PRINTK
484 select USE_GENERIC_EARLY_PRINTK_8250
487 This enables support for the IMG Pistachio SoC platform.
490 bool "MIPS Malta board"
491 select ARCH_MAY_HAVE_PC_FDC
492 select ARCH_MIGHT_HAVE_PC_PARPORT
493 select ARCH_MIGHT_HAVE_PC_SERIO
499 select CLKSRC_MIPS_GIC
501 select DMA_MAYBE_COHERENT
502 select GENERIC_ISA_DMA
503 select HAVE_PCSPKR_PLATFORM
510 select MIPS_CPU_SCACHE
511 select MIPS_L1_CACHE_SHIFT_6
512 select PCI_GT64XXX_PCI0
516 select SYS_HAS_CPU_MIPS32_R1
517 select SYS_HAS_CPU_MIPS32_R2
518 select SYS_HAS_CPU_MIPS32_R3_5
519 select SYS_HAS_CPU_MIPS32_R5
520 select SYS_HAS_CPU_MIPS32_R6
521 select SYS_HAS_CPU_MIPS64_R1
522 select SYS_HAS_CPU_MIPS64_R2
523 select SYS_HAS_CPU_MIPS64_R6
524 select SYS_HAS_CPU_NEVADA
525 select SYS_HAS_CPU_RM7000
526 select SYS_SUPPORTS_32BIT_KERNEL
527 select SYS_SUPPORTS_64BIT_KERNEL
528 select SYS_SUPPORTS_BIG_ENDIAN
529 select SYS_SUPPORTS_HIGHMEM
530 select SYS_SUPPORTS_LITTLE_ENDIAN
531 select SYS_SUPPORTS_MICROMIPS
532 select SYS_SUPPORTS_MIPS_CMP
533 select SYS_SUPPORTS_MIPS_CPS
534 select SYS_SUPPORTS_MIPS16
535 select SYS_SUPPORTS_MULTITHREADING
536 select SYS_SUPPORTS_SMARTMIPS
537 select SYS_SUPPORTS_VPE_LOADER
538 select SYS_SUPPORTS_ZBOOT
539 select SYS_SUPPORTS_RELOCATABLE
542 select ZONE_DMA32 if 64BIT
546 This enables support for the MIPS Technologies Malta evaluation
550 bool "Microchip PIC32 Family"
552 This enables support for the Microchip PIC32 family of platforms.
554 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
558 bool "NEC EMMA2RH Mark-eins board"
562 This enables support for the NEC Electronics Mark-eins boards.
565 bool "NEC VR4100 series based machines"
568 select SYS_HAS_CPU_VR41XX
569 select SYS_SUPPORTS_MIPS16
573 bool "NXP STB220 board"
576 Support for NXP Semiconductors STB220 Development Board.
583 Support for NXP Semiconductors STB225 Development Board.
586 bool "PMC-Sierra MSP chipsets"
589 select DMA_NONCOHERENT
591 select NO_EXCEPT_FILL
593 select SYS_HAS_CPU_MIPS32_R1
594 select SYS_HAS_CPU_MIPS32_R2
595 select SYS_SUPPORTS_32BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_MIPS16
600 select SERIAL_8250_CONSOLE
601 select USB_EHCI_BIG_ENDIAN_MMIO
602 select USB_EHCI_BIG_ENDIAN_DESC
604 This adds support for the PMC-Sierra family of Multi-Service
605 Processor System-On-A-Chips. These parts include a number
606 of integrated peripherals, interfaces and DSPs in addition to
607 a variety of MIPS cores.
610 bool "Ralink based machines"
614 select DMA_NONCOHERENT
617 select SYS_HAS_CPU_MIPS32_R1
618 select SYS_HAS_CPU_MIPS32_R2
619 select SYS_SUPPORTS_32BIT_KERNEL
620 select SYS_SUPPORTS_LITTLE_ENDIAN
621 select SYS_SUPPORTS_MIPS16
622 select SYS_HAS_EARLY_PRINTK
624 select ARCH_HAS_RESET_CONTROLLER
625 select RESET_CONTROLLER
628 bool "SGI IP22 (Indy/Indigo2)"
631 select ARCH_MIGHT_HAVE_PC_SERIO
635 select DEFAULT_SGI_PARTITION
636 select DMA_NONCOHERENT
640 select IP22_CPU_SCACHE
642 select GENERIC_ISA_DMA_SUPPORT_BROKEN
644 select SGI_HAS_INDYDOG
650 select SYS_HAS_CPU_R4X00
651 select SYS_HAS_CPU_R5000
653 # Disable EARLY_PRINTK for now since it leads to overwritten prom
654 # memory during early boot on some machines.
656 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
657 # for a more details discussion
659 # select SYS_HAS_EARLY_PRINTK
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_64BIT_KERNEL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select MIPS_L1_CACHE_SHIFT_7
665 This are the SGI Indy, Challenge S and Indigo2, as well as certain
666 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
667 that runs on these, say Y here.
670 bool "SGI IP27 (Origin200/2000)"
671 select ARCH_HAS_PHYS_TO_DMA
675 select DEFAULT_SGI_PARTITION
676 select SYS_HAS_EARLY_PRINTK
678 select NR_CPUS_DEFAULT_64
679 select SYS_HAS_CPU_R10000
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_NUMA
683 select SYS_SUPPORTS_SMP
684 select MIPS_L1_CACHE_SHIFT_7
686 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
687 workstations. To compile a Linux kernel that runs on these, say Y
691 bool "SGI IP28 (Indigo2 R10k)"
694 select ARCH_MIGHT_HAVE_PC_SERIO
698 select DEFAULT_SGI_PARTITION
699 select DMA_NONCOHERENT
700 select GENERIC_ISA_DMA_SUPPORT_BROKEN
706 select SGI_HAS_INDYDOG
712 select SYS_HAS_CPU_R10000
714 # Disable EARLY_PRINTK for now since it leads to overwritten prom
715 # memory during early boot on some machines.
717 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
718 # for a more details discussion
720 # select SYS_HAS_EARLY_PRINTK
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select MIPS_L1_CACHE_SHIFT_7
725 This is the SGI Indigo2 with R10000 processor. To compile a Linux
726 kernel that runs on these, say Y here.
730 select ARCH_HAS_PHYS_TO_DMA
736 select DMA_NONCOHERENT
739 select R5000_CPU_SCACHE
740 select RM7000_CPU_SCACHE
741 select SYS_HAS_CPU_R5000
742 select SYS_HAS_CPU_R10000 if BROKEN
743 select SYS_HAS_CPU_RM7000
744 select SYS_HAS_CPU_NEVADA
745 select SYS_SUPPORTS_64BIT_KERNEL
746 select SYS_SUPPORTS_BIG_ENDIAN
748 If you want this kernel to run on SGI O2 workstation, say Y here.
751 bool "Sibyte BCM91120C-CRhine"
753 select SIBYTE_BCM1120
755 select SYS_HAS_CPU_SB1
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select SYS_SUPPORTS_LITTLE_ENDIAN
760 bool "Sibyte BCM91120x-Carmel"
762 select SIBYTE_BCM1120
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_LITTLE_ENDIAN
769 bool "Sibyte BCM91125C-CRhone"
771 select SIBYTE_BCM1125
773 select SYS_HAS_CPU_SB1
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
776 select SYS_SUPPORTS_LITTLE_ENDIAN
779 bool "Sibyte BCM91125E-Rhone"
781 select SIBYTE_BCM1125H
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_LITTLE_ENDIAN
788 bool "Sibyte BCM91250A-SWARM"
790 select HAVE_PATA_PLATFORM
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
797 select ZONE_DMA32 if 64BIT
799 config SIBYTE_LITTLESUR
800 bool "Sibyte BCM91250C2-LittleSur"
802 select HAVE_PATA_PLATFORM
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
810 config SIBYTE_SENTOSA
811 bool "Sibyte BCM91250E-Sentosa"
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_LITTLE_ENDIAN
820 bool "Sibyte BCM91480B-BigSur"
822 select NR_CPUS_DEFAULT_4
823 select SIBYTE_BCM1x80
825 select SYS_HAS_CPU_SB1
826 select SYS_SUPPORTS_BIG_ENDIAN
827 select SYS_SUPPORTS_HIGHMEM
828 select SYS_SUPPORTS_LITTLE_ENDIAN
829 select ZONE_DMA32 if 64BIT
832 bool "SNI RM200/300/400"
833 select FW_ARC if CPU_LITTLE_ENDIAN
834 select FW_ARC32 if CPU_LITTLE_ENDIAN
835 select FW_SNIPROM if CPU_BIG_ENDIAN
836 select ARCH_MAY_HAVE_PC_FDC
837 select ARCH_MIGHT_HAVE_PC_PARPORT
838 select ARCH_MIGHT_HAVE_PC_SERIO
842 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
843 select DMA_NONCOHERENT
844 select GENERIC_ISA_DMA
846 select HAVE_PCSPKR_PLATFORM
852 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
853 select SYS_HAS_CPU_R4X00
854 select SYS_HAS_CPU_R5000
855 select SYS_HAS_CPU_R10000
856 select R5000_CPU_SCACHE
857 select SYS_HAS_EARLY_PRINTK
858 select SYS_SUPPORTS_32BIT_KERNEL
859 select SYS_SUPPORTS_64BIT_KERNEL
860 select SYS_SUPPORTS_BIG_ENDIAN
861 select SYS_SUPPORTS_HIGHMEM
862 select SYS_SUPPORTS_LITTLE_ENDIAN
864 The SNI RM200/300/400 are MIPS-based machines manufactured by
865 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
866 Technology and now in turn merged with Fujitsu. Say Y here to
867 support this machine type.
870 bool "Toshiba TX39 series based machines"
873 bool "Toshiba TX49 series based machines"
875 config MIKROTIK_RB532
876 bool "Mikrotik RB532 boards"
879 select DMA_NONCOHERENT
882 select SYS_HAS_CPU_MIPS32_R1
883 select SYS_SUPPORTS_32BIT_KERNEL
884 select SYS_SUPPORTS_LITTLE_ENDIAN
888 select MIPS_L1_CACHE_SHIFT_4
890 Support the Mikrotik(tm) RouterBoard 532 series,
891 based on the IDT RC32434 SoC.
893 config CAVIUM_OCTEON_SOC
894 bool "Cavium Networks Octeon SoC based boards"
896 select ARCH_HAS_PHYS_TO_DMA
898 select PHYS_ADDR_T_64BIT
899 select SYS_SUPPORTS_64BIT_KERNEL
900 select SYS_SUPPORTS_BIG_ENDIAN
902 select EDAC_ATOMIC_SCRUB
903 select SYS_SUPPORTS_LITTLE_ENDIAN
904 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
905 select SYS_HAS_EARLY_PRINTK
906 select SYS_HAS_CPU_CAVIUM_OCTEON
913 select ARCH_SPARSEMEM_ENABLE
914 select SYS_SUPPORTS_SMP
915 select NR_CPUS_DEFAULT_64
916 select MIPS_NR_CPU_NR_MAP_1024
918 select MTD_COMPLEX_MAPPINGS
920 select SYS_SUPPORTS_RELOCATABLE
922 This option supports all of the Octeon reference boards from Cavium
923 Networks. It builds a kernel that dynamically determines the Octeon
924 CPU type and supports all known board reference implementations.
925 Some of the supported boards are:
932 Say Y here for most Octeon reference boards.
935 bool "Netlogic XLR/XLS based systems"
938 select SYS_HAS_CPU_XLR
939 select SYS_SUPPORTS_SMP
942 select SYS_SUPPORTS_32BIT_KERNEL
943 select SYS_SUPPORTS_64BIT_KERNEL
944 select PHYS_ADDR_T_64BIT
945 select SYS_SUPPORTS_BIG_ENDIAN
946 select SYS_SUPPORTS_HIGHMEM
947 select NR_CPUS_DEFAULT_32
951 select ZONE_DMA32 if 64BIT
953 select SYS_HAS_EARLY_PRINTK
954 select SYS_SUPPORTS_ZBOOT
955 select SYS_SUPPORTS_ZBOOT_UART16550
957 Support for systems based on Netlogic XLR and XLS processors.
958 Say Y here if you have a XLR or XLS based board.
961 bool "Netlogic XLP based systems"
964 select SYS_HAS_CPU_XLP
965 select SYS_SUPPORTS_SMP
967 select SYS_SUPPORTS_32BIT_KERNEL
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select PHYS_ADDR_T_64BIT
971 select SYS_SUPPORTS_BIG_ENDIAN
972 select SYS_SUPPORTS_LITTLE_ENDIAN
973 select SYS_SUPPORTS_HIGHMEM
974 select NR_CPUS_DEFAULT_32
978 select ZONE_DMA32 if 64BIT
980 select SYS_HAS_EARLY_PRINTK
982 select SYS_SUPPORTS_ZBOOT
983 select SYS_SUPPORTS_ZBOOT_UART16550
985 This board is based on Netlogic XLP Processor.
986 Say Y here if you have a XLP based board.
989 bool "Para-Virtualized guest system"
992 select SYS_SUPPORTS_64BIT_KERNEL
993 select SYS_SUPPORTS_32BIT_KERNEL
994 select SYS_SUPPORTS_BIG_ENDIAN
995 select SYS_SUPPORTS_SMP
996 select NR_CPUS_DEFAULT_4
997 select SYS_HAS_EARLY_PRINTK
998 select SYS_HAS_CPU_MIPS32_R2
999 select SYS_HAS_CPU_MIPS64_R2
1000 select SYS_HAS_CPU_CAVIUM_OCTEON
1002 select SWAP_IO_SPACE
1004 This option supports guest running under ????
1008 source "arch/mips/alchemy/Kconfig"
1009 source "arch/mips/ath25/Kconfig"
1010 source "arch/mips/ath79/Kconfig"
1011 source "arch/mips/bcm47xx/Kconfig"
1012 source "arch/mips/bcm63xx/Kconfig"
1013 source "arch/mips/bmips/Kconfig"
1014 source "arch/mips/generic/Kconfig"
1015 source "arch/mips/jazz/Kconfig"
1016 source "arch/mips/jz4740/Kconfig"
1017 source "arch/mips/lantiq/Kconfig"
1018 source "arch/mips/lasat/Kconfig"
1019 source "arch/mips/pic32/Kconfig"
1020 source "arch/mips/pistachio/Kconfig"
1021 source "arch/mips/pmcs-msp71xx/Kconfig"
1022 source "arch/mips/ralink/Kconfig"
1023 source "arch/mips/sgi-ip27/Kconfig"
1024 source "arch/mips/sibyte/Kconfig"
1025 source "arch/mips/txx9/Kconfig"
1026 source "arch/mips/vr41xx/Kconfig"
1027 source "arch/mips/cavium-octeon/Kconfig"
1028 source "arch/mips/loongson32/Kconfig"
1029 source "arch/mips/loongson64/Kconfig"
1030 source "arch/mips/netlogic/Kconfig"
1031 source "arch/mips/paravirt/Kconfig"
1035 config RWSEM_GENERIC_SPINLOCK
1039 config RWSEM_XCHGADD_ALGORITHM
1042 config GENERIC_HWEIGHT
1046 config GENERIC_CALIBRATE_DELAY
1050 config SCHED_OMIT_FRAME_POINTER
1055 # Select some configuration options automatically based on user selections.
1060 config ARCH_MAY_HAVE_PC_FDC
1096 config MIPS_CLOCK_VSYSCALL
1097 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1106 config ARCH_SUPPORTS_UPROBES
1109 config DMA_MAYBE_COHERENT
1110 select ARCH_HAS_DMA_COHERENCE_H
1111 select DMA_NONCOHERENT
1114 config DMA_PERDEV_COHERENT
1116 select DMA_NONCOHERENT
1118 config DMA_NONCOHERENT
1120 select ARCH_HAS_DMA_MMAP_PGPROT
1121 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1122 select ARCH_HAS_SYNC_DMA_FOR_CPU
1123 select NEED_DMA_MAP_STATE
1124 select ARCH_HAS_DMA_COHERENT_TO_PFN
1125 select DMA_NONCOHERENT_CACHE_SYNC
1127 config SYS_HAS_EARLY_PRINTK
1130 config SYS_SUPPORTS_HOTPLUG_CPU
1133 config MIPS_BONITO64
1148 config NO_IOPORT_MAP
1153 default y if !CPU_HAS_LOAD_STORE_LR
1155 config GENERIC_ISA_DMA
1157 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1160 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1162 select GENERIC_ISA_DMA
1167 config HOLES_IN_ZONE
1170 config SYS_SUPPORTS_RELOCATABLE
1173 Selected if the platform supports relocating the kernel.
1174 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1175 to allow access to command line and entropy sources.
1177 config MIPS_CBPF_JIT
1179 depends on BPF_JIT && HAVE_CBPF_JIT
1181 config MIPS_EBPF_JIT
1183 depends on BPF_JIT && HAVE_EBPF_JIT
1187 # Endianness selection. Sufficiently obscure so many users don't know what to
1188 # answer,so we try hard to limit the available choices. Also the use of a
1189 # choice statement should be more obvious to the user.
1192 prompt "Endianness selection"
1194 Some MIPS machines can be configured for either little or big endian
1195 byte order. These modes require different kernels and a different
1196 Linux distribution. In general there is one preferred byteorder for a
1197 particular system but some systems are just as commonly used in the
1198 one or the other endianness.
1200 config CPU_BIG_ENDIAN
1202 depends on SYS_SUPPORTS_BIG_ENDIAN
1204 config CPU_LITTLE_ENDIAN
1205 bool "Little endian"
1206 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1213 config SYS_SUPPORTS_APM_EMULATION
1216 config SYS_SUPPORTS_BIG_ENDIAN
1219 config SYS_SUPPORTS_LITTLE_ENDIAN
1222 config SYS_SUPPORTS_HUGETLBFS
1224 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1227 config MIPS_HUGE_TLB_SUPPORT
1228 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1245 config PCI_GT64XXX_PCI0
1248 config NO_EXCEPT_FILL
1255 select DMA_NONCOHERENT
1257 select SWAP_IO_SPACE
1258 select SYS_HAS_CPU_R5500
1259 select SYS_SUPPORTS_32BIT_KERNEL
1260 select SYS_SUPPORTS_64BIT_KERNEL
1261 select SYS_SUPPORTS_BIG_ENDIAN
1268 select DMA_NONCOHERENT
1269 select SYS_HAS_CPU_MIPS32_R2
1270 select SYS_SUPPORTS_32BIT_KERNEL
1271 select SYS_SUPPORTS_LITTLE_ENDIAN
1272 select SYS_SUPPORTS_BIG_ENDIAN
1273 select SYS_SUPPORTS_MIPS16
1274 select CPU_MIPSR2_IRQ_VI
1283 config SWAP_IO_SPACE
1286 config SGI_HAS_INDYDOG
1298 config SGI_HAS_ZILOG
1301 config SGI_HAS_I8042
1304 config DEFAULT_SGI_PARTITION
1316 config MIPS_L1_CACHE_SHIFT_4
1319 config MIPS_L1_CACHE_SHIFT_5
1322 config MIPS_L1_CACHE_SHIFT_6
1325 config MIPS_L1_CACHE_SHIFT_7
1328 config MIPS_L1_CACHE_SHIFT
1330 default "7" if MIPS_L1_CACHE_SHIFT_7
1331 default "6" if MIPS_L1_CACHE_SHIFT_6
1332 default "5" if MIPS_L1_CACHE_SHIFT_5
1333 default "4" if MIPS_L1_CACHE_SHIFT_4
1336 config HAVE_STD_PC_SERIAL_PORT
1340 bool "ARC console support"
1341 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1345 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1350 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1359 menu "CPU selection"
1365 config CPU_LOONGSON3
1366 bool "Loongson 3 CPU"
1367 depends on SYS_HAS_CPU_LOONGSON3
1368 select ARCH_HAS_PHYS_TO_DMA
1369 select CPU_SUPPORTS_64BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1371 select CPU_SUPPORTS_HUGEPAGES
1372 select CPU_HAS_LOAD_STORE_LR
1373 select WEAK_ORDERING
1374 select WEAK_REORDERING_BEYOND_LLSC
1375 select MIPS_PGD_C0_CONTEXT
1376 select MIPS_L1_CACHE_SHIFT_6
1380 The Loongson 3 processor implements the MIPS64R2 instruction
1381 set with many extensions.
1383 config LOONGSON3_ENHANCEMENT
1384 bool "New Loongson 3 CPU Enhancements"
1387 select CPU_HAS_PREFETCH
1388 depends on CPU_LOONGSON3
1390 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1391 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1392 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1393 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1394 Fast TLB refill support, etc.
1396 This option enable those enhancements which are not probed at run
1397 time. If you want a generic kernel to run on all Loongson 3 machines,
1398 please say 'N' here. If you want a high-performance kernel to run on
1399 new Loongson 3 machines only, please say 'Y' here.
1401 config CPU_LOONGSON2E
1403 depends on SYS_HAS_CPU_LOONGSON2E
1404 select CPU_LOONGSON2
1406 The Loongson 2E processor implements the MIPS III instruction set
1407 with many extensions.
1409 It has an internal FPGA northbridge, which is compatible to
1412 config CPU_LOONGSON2F
1414 depends on SYS_HAS_CPU_LOONGSON2F
1415 select CPU_LOONGSON2
1418 The Loongson 2F processor implements the MIPS III instruction set
1419 with many extensions.
1421 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1422 have a similar programming interface with FPGA northbridge used in
1425 config CPU_LOONGSON1B
1427 depends on SYS_HAS_CPU_LOONGSON1B
1428 select CPU_LOONGSON1
1429 select LEDS_GPIO_REGISTER
1431 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1432 Release 1 instruction set and part of the MIPS32 Release 2
1435 config CPU_LOONGSON1C
1437 depends on SYS_HAS_CPU_LOONGSON1C
1438 select CPU_LOONGSON1
1439 select LEDS_GPIO_REGISTER
1441 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1442 Release 1 instruction set and part of the MIPS32 Release 2
1445 config CPU_MIPS32_R1
1446 bool "MIPS32 Release 1"
1447 depends on SYS_HAS_CPU_MIPS32_R1
1448 select CPU_HAS_PREFETCH
1449 select CPU_HAS_LOAD_STORE_LR
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1453 Choose this option to build a kernel for release 1 or later of the
1454 MIPS32 architecture. Most modern embedded systems with a 32-bit
1455 MIPS processor are based on a MIPS32 processor. If you know the
1456 specific type of processor in your system, choose those that one
1457 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1458 Release 2 of the MIPS32 architecture is available since several
1459 years so chances are you even have a MIPS32 Release 2 processor
1460 in which case you should choose CPU_MIPS32_R2 instead for better
1463 config CPU_MIPS32_R2
1464 bool "MIPS32 Release 2"
1465 depends on SYS_HAS_CPU_MIPS32_R2
1466 select CPU_HAS_PREFETCH
1467 select CPU_HAS_LOAD_STORE_LR
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_MSA
1473 Choose this option to build a kernel for release 2 or later of the
1474 MIPS32 architecture. Most modern embedded systems with a 32-bit
1475 MIPS processor are based on a MIPS32 processor. If you know the
1476 specific type of processor in your system, choose those that one
1477 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1479 config CPU_MIPS32_R6
1480 bool "MIPS32 Release 6"
1481 depends on SYS_HAS_CPU_MIPS32_R6
1482 select CPU_HAS_PREFETCH
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_HIGHMEM
1485 select CPU_SUPPORTS_MSA
1487 select MIPS_O32_FP64_SUPPORT
1489 Choose this option to build a kernel for release 6 or later of the
1490 MIPS32 architecture. New MIPS processors, starting with the Warrior
1491 family, are based on a MIPS32r6 processor. If you own an older
1492 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1494 config CPU_MIPS64_R1
1495 bool "MIPS64 Release 1"
1496 depends on SYS_HAS_CPU_MIPS64_R1
1497 select CPU_HAS_PREFETCH
1498 select CPU_HAS_LOAD_STORE_LR
1499 select CPU_SUPPORTS_32BIT_KERNEL
1500 select CPU_SUPPORTS_64BIT_KERNEL
1501 select CPU_SUPPORTS_HIGHMEM
1502 select CPU_SUPPORTS_HUGEPAGES
1504 Choose this option to build a kernel for release 1 or later of the
1505 MIPS64 architecture. Many modern embedded systems with a 64-bit
1506 MIPS processor are based on a MIPS64 processor. If you know the
1507 specific type of processor in your system, choose those that one
1508 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1509 Release 2 of the MIPS64 architecture is available since several
1510 years so chances are you even have a MIPS64 Release 2 processor
1511 in which case you should choose CPU_MIPS64_R2 instead for better
1514 config CPU_MIPS64_R2
1515 bool "MIPS64 Release 2"
1516 depends on SYS_HAS_CPU_MIPS64_R2
1517 select CPU_HAS_PREFETCH
1518 select CPU_HAS_LOAD_STORE_LR
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_64BIT_KERNEL
1521 select CPU_SUPPORTS_HIGHMEM
1522 select CPU_SUPPORTS_HUGEPAGES
1523 select CPU_SUPPORTS_MSA
1526 Choose this option to build a kernel for release 2 or later of the
1527 MIPS64 architecture. Many modern embedded systems with a 64-bit
1528 MIPS processor are based on a MIPS64 processor. If you know the
1529 specific type of processor in your system, choose those that one
1530 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1532 config CPU_MIPS64_R6
1533 bool "MIPS64 Release 6"
1534 depends on SYS_HAS_CPU_MIPS64_R6
1535 select CPU_HAS_PREFETCH
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_SUPPORTS_MSA
1540 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1543 Choose this option to build a kernel for release 6 or later of the
1544 MIPS64 architecture. New MIPS processors, starting with the Warrior
1545 family, are based on a MIPS64r6 processor. If you own an older
1546 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1550 depends on SYS_HAS_CPU_R3000
1552 select CPU_HAS_LOAD_STORE_LR
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_HIGHMEM
1556 Please make sure to pick the right CPU type. Linux/MIPS is not
1557 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1558 *not* work on R4000 machines and vice versa. However, since most
1559 of the supported machines have an R4000 (or similar) CPU, R4x00
1560 might be a safe bet. If the resulting kernel does not work,
1561 try to recompile with R3000.
1565 depends on SYS_HAS_CPU_TX39XX
1566 select CPU_SUPPORTS_32BIT_KERNEL
1567 select CPU_HAS_LOAD_STORE_LR
1571 depends on SYS_HAS_CPU_VR41XX
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_HAS_LOAD_STORE_LR
1576 The options selects support for the NEC VR4100 series of processors.
1577 Only choose this option if you have one of these processors as a
1578 kernel built with this option will not run on any other type of
1579 processor or vice versa.
1583 depends on SYS_HAS_CPU_R4300
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_HAS_LOAD_STORE_LR
1588 MIPS Technologies R4300-series processors.
1592 depends on SYS_HAS_CPU_R4X00
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1596 select CPU_HAS_LOAD_STORE_LR
1598 MIPS Technologies R4000-series processors other than 4300, including
1599 the R4000, R4400, R4600, and 4700.
1603 depends on SYS_HAS_CPU_TX49XX
1604 select CPU_HAS_PREFETCH
1605 select CPU_HAS_LOAD_STORE_LR
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HUGEPAGES
1612 depends on SYS_HAS_CPU_R5000
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_64BIT_KERNEL
1615 select CPU_SUPPORTS_HUGEPAGES
1616 select CPU_HAS_LOAD_STORE_LR
1618 MIPS Technologies R5000-series processors other than the Nevada.
1622 depends on SYS_HAS_CPU_R5432
1623 select CPU_SUPPORTS_32BIT_KERNEL
1624 select CPU_SUPPORTS_64BIT_KERNEL
1625 select CPU_SUPPORTS_HUGEPAGES
1626 select CPU_HAS_LOAD_STORE_LR
1630 depends on SYS_HAS_CPU_R5500
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HUGEPAGES
1634 select CPU_HAS_LOAD_STORE_LR
1636 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1641 depends on SYS_HAS_CPU_NEVADA
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_64BIT_KERNEL
1644 select CPU_SUPPORTS_HUGEPAGES
1645 select CPU_HAS_LOAD_STORE_LR
1647 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1651 depends on SYS_HAS_CPU_R8000
1652 select CPU_HAS_PREFETCH
1653 select CPU_HAS_LOAD_STORE_LR
1654 select CPU_SUPPORTS_64BIT_KERNEL
1656 MIPS Technologies R8000 processors. Note these processors are
1657 uncommon and the support for them is incomplete.
1661 depends on SYS_HAS_CPU_R10000
1662 select CPU_HAS_PREFETCH
1663 select CPU_HAS_LOAD_STORE_LR
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1669 MIPS Technologies R10000-series processors.
1673 depends on SYS_HAS_CPU_RM7000
1674 select CPU_HAS_PREFETCH
1675 select CPU_HAS_LOAD_STORE_LR
1676 select CPU_SUPPORTS_32BIT_KERNEL
1677 select CPU_SUPPORTS_64BIT_KERNEL
1678 select CPU_SUPPORTS_HIGHMEM
1679 select CPU_SUPPORTS_HUGEPAGES
1683 depends on SYS_HAS_CPU_SB1
1684 select CPU_HAS_LOAD_STORE_LR
1685 select CPU_SUPPORTS_32BIT_KERNEL
1686 select CPU_SUPPORTS_64BIT_KERNEL
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_SUPPORTS_HUGEPAGES
1689 select WEAK_ORDERING
1691 config CPU_CAVIUM_OCTEON
1692 bool "Cavium Octeon processor"
1693 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1694 select CPU_HAS_PREFETCH
1695 select CPU_HAS_LOAD_STORE_LR
1696 select CPU_SUPPORTS_64BIT_KERNEL
1697 select WEAK_ORDERING
1698 select CPU_SUPPORTS_HIGHMEM
1699 select CPU_SUPPORTS_HUGEPAGES
1700 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1701 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1702 select MIPS_L1_CACHE_SHIFT_7
1705 The Cavium Octeon processor is a highly integrated chip containing
1706 many ethernet hardware widgets for networking tasks. The processor
1707 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1708 Full details can be found at http://www.caviumnetworks.com.
1711 bool "Broadcom BMIPS"
1712 depends on SYS_HAS_CPU_BMIPS
1714 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1715 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1716 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1717 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select DMA_NONCOHERENT
1721 select SWAP_IO_SPACE
1722 select WEAK_ORDERING
1723 select CPU_SUPPORTS_HIGHMEM
1724 select CPU_HAS_PREFETCH
1725 select CPU_HAS_LOAD_STORE_LR
1726 select CPU_SUPPORTS_CPUFREQ
1727 select MIPS_EXTERNAL_TIMER
1729 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1732 bool "Netlogic XLR SoC"
1733 depends on SYS_HAS_CPU_XLR
1734 select CPU_HAS_LOAD_STORE_LR
1735 select CPU_SUPPORTS_32BIT_KERNEL
1736 select CPU_SUPPORTS_64BIT_KERNEL
1737 select CPU_SUPPORTS_HIGHMEM
1738 select CPU_SUPPORTS_HUGEPAGES
1739 select WEAK_ORDERING
1740 select WEAK_REORDERING_BEYOND_LLSC
1742 Netlogic Microsystems XLR/XLS processors.
1745 bool "Netlogic XLP SoC"
1746 depends on SYS_HAS_CPU_XLP
1747 select CPU_SUPPORTS_32BIT_KERNEL
1748 select CPU_SUPPORTS_64BIT_KERNEL
1749 select CPU_SUPPORTS_HIGHMEM
1750 select WEAK_ORDERING
1751 select WEAK_REORDERING_BEYOND_LLSC
1752 select CPU_HAS_PREFETCH
1753 select CPU_HAS_LOAD_STORE_LR
1755 select CPU_SUPPORTS_HUGEPAGES
1756 select MIPS_ASID_BITS_VARIABLE
1758 Netlogic Microsystems XLP processors.
1761 config CPU_MIPS32_3_5_FEATURES
1762 bool "MIPS32 Release 3.5 Features"
1763 depends on SYS_HAS_CPU_MIPS32_R3_5
1764 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1766 Choose this option to build a kernel for release 2 or later of the
1767 MIPS32 architecture including features from the 3.5 release such as
1768 support for Enhanced Virtual Addressing (EVA).
1770 config CPU_MIPS32_3_5_EVA
1771 bool "Enhanced Virtual Addressing (EVA)"
1772 depends on CPU_MIPS32_3_5_FEATURES
1776 Choose this option if you want to enable the Enhanced Virtual
1777 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1778 One of its primary benefits is an increase in the maximum size
1779 of lowmem (up to 3GB). If unsure, say 'N' here.
1781 config CPU_MIPS32_R5_FEATURES
1782 bool "MIPS32 Release 5 Features"
1783 depends on SYS_HAS_CPU_MIPS32_R5
1784 depends on CPU_MIPS32_R2
1786 Choose this option to build a kernel for release 2 or later of the
1787 MIPS32 architecture including features from release 5 such as
1788 support for Extended Physical Addressing (XPA).
1790 config CPU_MIPS32_R5_XPA
1791 bool "Extended Physical Addressing (XPA)"
1792 depends on CPU_MIPS32_R5_FEATURES
1794 depends on !PAGE_SIZE_4KB
1795 depends on SYS_SUPPORTS_HIGHMEM
1798 select PHYS_ADDR_T_64BIT
1801 Choose this option if you want to enable the Extended Physical
1802 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1803 benefit is to increase physical addressing equal to or greater
1804 than 40 bits. Note that this has the side effect of turning on
1805 64-bit addressing which in turn makes the PTEs 64-bit in size.
1806 If unsure, say 'N' here.
1809 config CPU_NOP_WORKAROUNDS
1812 config CPU_JUMP_WORKAROUNDS
1815 config CPU_LOONGSON2F_WORKAROUNDS
1816 bool "Loongson 2F Workarounds"
1818 select CPU_NOP_WORKAROUNDS
1819 select CPU_JUMP_WORKAROUNDS
1821 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1822 require workarounds. Without workarounds the system may hang
1823 unexpectedly. For more information please refer to the gas
1824 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1826 Loongson 2F03 and later have fixed these issues and no workarounds
1827 are needed. The workarounds have no significant side effect on them
1828 but may decrease the performance of the system so this option should
1829 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1832 If unsure, please say Y.
1833 endif # CPU_LOONGSON2F
1835 config SYS_SUPPORTS_ZBOOT
1837 select HAVE_KERNEL_GZIP
1838 select HAVE_KERNEL_BZIP2
1839 select HAVE_KERNEL_LZ4
1840 select HAVE_KERNEL_LZMA
1841 select HAVE_KERNEL_LZO
1842 select HAVE_KERNEL_XZ
1844 config SYS_SUPPORTS_ZBOOT_UART16550
1846 select SYS_SUPPORTS_ZBOOT
1848 config SYS_SUPPORTS_ZBOOT_UART_PROM
1850 select SYS_SUPPORTS_ZBOOT
1852 config CPU_LOONGSON2
1854 select CPU_SUPPORTS_32BIT_KERNEL
1855 select CPU_SUPPORTS_64BIT_KERNEL
1856 select CPU_SUPPORTS_HIGHMEM
1857 select CPU_SUPPORTS_HUGEPAGES
1858 select ARCH_HAS_PHYS_TO_DMA
1859 select CPU_HAS_LOAD_STORE_LR
1861 config CPU_LOONGSON1
1865 select CPU_HAS_PREFETCH
1866 select CPU_HAS_LOAD_STORE_LR
1867 select CPU_SUPPORTS_32BIT_KERNEL
1868 select CPU_SUPPORTS_HIGHMEM
1869 select CPU_SUPPORTS_CPUFREQ
1871 config CPU_BMIPS32_3300
1872 select SMP_UP if SMP
1875 config CPU_BMIPS4350
1877 select SYS_SUPPORTS_SMP
1878 select SYS_SUPPORTS_HOTPLUG_CPU
1880 config CPU_BMIPS4380
1882 select MIPS_L1_CACHE_SHIFT_6
1883 select SYS_SUPPORTS_SMP
1884 select SYS_SUPPORTS_HOTPLUG_CPU
1887 config CPU_BMIPS5000
1889 select MIPS_CPU_SCACHE
1890 select MIPS_L1_CACHE_SHIFT_7
1891 select SYS_SUPPORTS_SMP
1892 select SYS_SUPPORTS_HOTPLUG_CPU
1895 config SYS_HAS_CPU_LOONGSON3
1897 select CPU_SUPPORTS_CPUFREQ
1900 config SYS_HAS_CPU_LOONGSON2E
1903 config SYS_HAS_CPU_LOONGSON2F
1905 select CPU_SUPPORTS_CPUFREQ
1906 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1907 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1909 config SYS_HAS_CPU_LOONGSON1B
1912 config SYS_HAS_CPU_LOONGSON1C
1915 config SYS_HAS_CPU_MIPS32_R1
1918 config SYS_HAS_CPU_MIPS32_R2
1921 config SYS_HAS_CPU_MIPS32_R3_5
1924 config SYS_HAS_CPU_MIPS32_R5
1927 config SYS_HAS_CPU_MIPS32_R6
1930 config SYS_HAS_CPU_MIPS64_R1
1933 config SYS_HAS_CPU_MIPS64_R2
1936 config SYS_HAS_CPU_MIPS64_R6
1939 config SYS_HAS_CPU_R3000
1942 config SYS_HAS_CPU_TX39XX
1945 config SYS_HAS_CPU_VR41XX
1948 config SYS_HAS_CPU_R4300
1951 config SYS_HAS_CPU_R4X00
1954 config SYS_HAS_CPU_TX49XX
1957 config SYS_HAS_CPU_R5000
1960 config SYS_HAS_CPU_R5432
1963 config SYS_HAS_CPU_R5500
1966 config SYS_HAS_CPU_NEVADA
1969 config SYS_HAS_CPU_R8000
1972 config SYS_HAS_CPU_R10000
1975 config SYS_HAS_CPU_RM7000
1978 config SYS_HAS_CPU_SB1
1981 config SYS_HAS_CPU_CAVIUM_OCTEON
1984 config SYS_HAS_CPU_BMIPS
1987 config SYS_HAS_CPU_BMIPS32_3300
1989 select SYS_HAS_CPU_BMIPS
1991 config SYS_HAS_CPU_BMIPS4350
1993 select SYS_HAS_CPU_BMIPS
1995 config SYS_HAS_CPU_BMIPS4380
1997 select SYS_HAS_CPU_BMIPS
1999 config SYS_HAS_CPU_BMIPS5000
2001 select SYS_HAS_CPU_BMIPS
2003 config SYS_HAS_CPU_XLR
2006 config SYS_HAS_CPU_XLP
2010 # CPU may reorder R->R, R->W, W->R, W->W
2011 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2013 config WEAK_ORDERING
2017 # CPU may reorder reads and writes beyond LL/SC
2018 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2020 config WEAK_REORDERING_BEYOND_LLSC
2025 # These two indicate any level of the MIPS32 and MIPS64 architecture
2029 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2033 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2036 # These two indicate the revision of the architecture, either Release 1 or Release 2
2040 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2044 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2050 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2052 select HAVE_ARCH_BITREVERSE
2053 select MIPS_ASID_BITS_VARIABLE
2054 select MIPS_CRC_SUPPORT
2063 config SYS_SUPPORTS_32BIT_KERNEL
2065 config SYS_SUPPORTS_64BIT_KERNEL
2067 config CPU_SUPPORTS_32BIT_KERNEL
2069 config CPU_SUPPORTS_64BIT_KERNEL
2071 config CPU_SUPPORTS_CPUFREQ
2073 config CPU_SUPPORTS_ADDRWINCFG
2075 config CPU_SUPPORTS_HUGEPAGES
2077 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2079 config MIPS_PGD_C0_CONTEXT
2081 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2084 # Set to y for ptrace access to watch registers.
2086 config HARDWARE_WATCHPOINTS
2088 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2093 prompt "Kernel code model"
2095 You should only select this option if you have a workload that
2096 actually benefits from 64-bit processing or if your machine has
2097 large memory. You will only be presented a single option in this
2098 menu if your system does not support both 32-bit and 64-bit kernels.
2101 bool "32-bit kernel"
2102 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2105 Select this option if you want to build a 32-bit kernel.
2108 bool "64-bit kernel"
2109 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2111 Select this option if you want to build a 64-bit kernel.
2116 bool "KVM Guest Kernel"
2117 depends on BROKEN_ON_SMP
2119 Select this option if building a guest kernel for KVM (Trap & Emulate)
2122 config KVM_GUEST_TIMER_FREQ
2123 int "Count/Compare Timer Frequency (MHz)"
2124 depends on KVM_GUEST
2127 Set this to non-zero if building a guest kernel for KVM to skip RTC
2128 emulation when determining guest CPU Frequency. Instead, the guest's
2129 timer frequency is specified directly.
2131 config MIPS_VA_BITS_48
2132 bool "48 bits virtual memory"
2135 Support a maximum at least 48 bits of application virtual
2136 memory. Default is 40 bits or less, depending on the CPU.
2137 For page sizes 16k and above, this option results in a small
2138 memory overhead for page tables. For 4k page size, a fourth
2139 level of page tables is added which imposes both a memory
2140 overhead as well as slower TLB fault handling.
2145 prompt "Kernel page size"
2146 default PAGE_SIZE_4KB
2148 config PAGE_SIZE_4KB
2150 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2152 This option select the standard 4kB Linux page size. On some
2153 R3000-family processors this is the only available page size. Using
2154 4kB page size will minimize memory consumption and is therefore
2155 recommended for low memory systems.
2157 config PAGE_SIZE_8KB
2159 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2160 depends on !MIPS_VA_BITS_48
2162 Using 8kB page size will result in higher performance kernel at
2163 the price of higher memory consumption. This option is available
2164 only on R8000 and cnMIPS processors. Note that you will need a
2165 suitable Linux distribution to support this.
2167 config PAGE_SIZE_16KB
2169 depends on !CPU_R3000 && !CPU_TX39XX
2171 Using 16kB page size will result in higher performance kernel at
2172 the price of higher memory consumption. This option is available on
2173 all non-R3000 family processors. Note that you will need a suitable
2174 Linux distribution to support this.
2176 config PAGE_SIZE_32KB
2178 depends on CPU_CAVIUM_OCTEON
2179 depends on !MIPS_VA_BITS_48
2181 Using 32kB page size will result in higher performance kernel at
2182 the price of higher memory consumption. This option is available
2183 only on cnMIPS cores. Note that you will need a suitable Linux
2184 distribution to support this.
2186 config PAGE_SIZE_64KB
2188 depends on !CPU_R3000 && !CPU_TX39XX
2190 Using 64kB page size will result in higher performance kernel at
2191 the price of higher memory consumption. This option is available on
2192 all non-R3000 family processor. Not that at the time of this
2193 writing this option is still high experimental.
2197 config FORCE_MAX_ZONEORDER
2198 int "Maximum zone order"
2199 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2200 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2201 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2202 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2203 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2204 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2208 The kernel memory allocator divides physically contiguous memory
2209 blocks into "zones", where each zone is a power of two number of
2210 pages. This option selects the largest power of two that the kernel
2211 keeps in the memory allocator. If you need to allocate very large
2212 blocks of physically contiguous memory, then you may need to
2213 increase this value.
2215 This config option is actually maximum order plus one. For example,
2216 a value of 11 means that the largest free memory block is 2^10 pages.
2218 The page size is not necessarily 4KB. Keep this in mind
2219 when choosing a value for this option.
2224 config IP22_CPU_SCACHE
2229 # Support for a MIPS32 / MIPS64 style S-caches
2231 config MIPS_CPU_SCACHE
2235 config R5000_CPU_SCACHE
2239 config RM7000_CPU_SCACHE
2243 config SIBYTE_DMA_PAGEOPS
2244 bool "Use DMA to clear/copy pages"
2247 Instead of using the CPU to zero and copy pages, use a Data Mover
2248 channel. These DMA channels are otherwise unused by the standard
2249 SiByte Linux port. Seems to give a small performance benefit.
2251 config CPU_HAS_PREFETCH
2254 config CPU_GENERIC_DUMP_TLB
2256 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2260 default y if !(CPU_R3000 || CPU_TX39XX)
2262 config CPU_R4K_CACHE_TLB
2264 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2267 bool "MIPS MT SMP support (1 TC on each available VPE)"
2269 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2270 select CPU_MIPSR2_IRQ_VI
2271 select CPU_MIPSR2_IRQ_EI
2276 select SYS_SUPPORTS_SMP
2277 select SYS_SUPPORTS_SCHED_SMT
2278 select MIPS_PERF_SHARED_TC_COUNTERS
2280 This is a kernel model which is known as SMVP. This is supported
2281 on cores with the MT ASE and uses the available VPEs to implement
2282 virtual processors which supports SMP. This is equivalent to the
2283 Intel Hyperthreading feature. For further information go to
2284 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2290 bool "SMT (multithreading) scheduler support"
2291 depends on SYS_SUPPORTS_SCHED_SMT
2294 SMT scheduler support improves the CPU scheduler's decision making
2295 when dealing with MIPS MT enabled cores at a cost of slightly
2296 increased overhead in some places. If unsure say N here.
2298 config SYS_SUPPORTS_SCHED_SMT
2301 config SYS_SUPPORTS_MULTITHREADING
2304 config MIPS_MT_FPAFF
2305 bool "Dynamic FPU affinity for FP-intensive threads"
2307 depends on MIPS_MT_SMP
2309 config MIPSR2_TO_R6_EMULATOR
2310 bool "MIPS R2-to-R6 emulator"
2311 depends on CPU_MIPSR6
2314 Choose this option if you want to run non-R6 MIPS userland code.
2315 Even if you say 'Y' here, the emulator will still be disabled by
2316 default. You can enable it using the 'mipsr2emu' kernel option.
2317 The only reason this is a build-time option is to save ~14K from the
2320 config SYS_SUPPORTS_VPE_LOADER
2322 depends on SYS_SUPPORTS_MULTITHREADING
2324 Indicates that the platform supports the VPE loader, and provides
2327 config MIPS_VPE_LOADER
2328 bool "VPE loader support."
2329 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2330 select CPU_MIPSR2_IRQ_VI
2331 select CPU_MIPSR2_IRQ_EI
2334 Includes a loader for loading an elf relocatable object
2335 onto another VPE and running it.
2337 config MIPS_VPE_LOADER_CMP
2340 depends on MIPS_VPE_LOADER && MIPS_CMP
2342 config MIPS_VPE_LOADER_MT
2345 depends on MIPS_VPE_LOADER && !MIPS_CMP
2347 config MIPS_VPE_LOADER_TOM
2348 bool "Load VPE program into memory hidden from linux"
2349 depends on MIPS_VPE_LOADER
2352 The loader can use memory that is present but has been hidden from
2353 Linux using the kernel command line option "mem=xxMB". It's up to
2354 you to ensure the amount you put in the option and the space your
2355 program requires is less or equal to the amount physically present.
2357 config MIPS_VPE_APSP_API
2358 bool "Enable support for AP/SP API (RTLX)"
2359 depends on MIPS_VPE_LOADER
2361 config MIPS_VPE_APSP_API_CMP
2364 depends on MIPS_VPE_APSP_API && MIPS_CMP
2366 config MIPS_VPE_APSP_API_MT
2369 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2372 bool "MIPS CMP framework support (DEPRECATED)"
2373 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2376 select SYS_SUPPORTS_SMP
2377 select WEAK_ORDERING
2380 Select this if you are using a bootloader which implements the "CMP
2381 framework" protocol (ie. YAMON) and want your kernel to make use of
2382 its ability to start secondary CPUs.
2384 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2388 bool "MIPS Coherent Processing System support"
2389 depends on SYS_SUPPORTS_MIPS_CPS
2391 select MIPS_CPS_PM if HOTPLUG_CPU
2393 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2394 select SYS_SUPPORTS_HOTPLUG_CPU
2395 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2396 select SYS_SUPPORTS_SMP
2397 select WEAK_ORDERING
2399 Select this if you wish to run an SMP kernel across multiple cores
2400 within a MIPS Coherent Processing System. When this option is
2401 enabled the kernel will probe for other cores and boot them with
2402 no external assistance. It is safe to enable this when hardware
2403 support is unavailable.
2416 config SB1_PASS_2_WORKAROUNDS
2418 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2421 config SB1_PASS_2_1_WORKAROUNDS
2423 depends on CPU_SB1 && CPU_SB1_PASS_2
2428 prompt "SmartMIPS or microMIPS ASE support"
2430 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2433 Select this if you want neither microMIPS nor SmartMIPS support
2435 config CPU_HAS_SMARTMIPS
2436 depends on SYS_SUPPORTS_SMARTMIPS
2439 SmartMIPS is a extension of the MIPS32 architecture aimed at
2440 increased security at both hardware and software level for
2441 smartcards. Enabling this option will allow proper use of the
2442 SmartMIPS instructions by Linux applications. However a kernel with
2443 this option will not work on a MIPS core without SmartMIPS core. If
2444 you don't know you probably don't have SmartMIPS and should say N
2447 config CPU_MICROMIPS
2448 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2451 When this option is enabled the kernel will be built using the
2457 bool "Support for the MIPS SIMD Architecture"
2458 depends on CPU_SUPPORTS_MSA
2459 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2461 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2462 and a set of SIMD instructions to operate on them. When this option
2463 is enabled the kernel will support allocating & switching MSA
2464 vector register contexts. If you know that your kernel will only be
2465 running on CPUs which do not support MSA or that your userland will
2466 not be making use of it then you may wish to say N here to reduce
2467 the size & complexity of your kernel.
2480 config CPU_HAS_LOAD_STORE_LR
2483 CPU has support for unaligned load and store instructions:
2484 LWL, LWR, SWL, SWR (Load/store word left/right).
2485 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2488 # Vectored interrupt mode is an R2 feature
2490 config CPU_MIPSR2_IRQ_VI
2494 # Extended interrupt mode is an R2 feature
2496 config CPU_MIPSR2_IRQ_EI
2501 depends on !CPU_R3000
2507 config CPU_DADDI_WORKAROUNDS
2510 config CPU_R4000_WORKAROUNDS
2512 select CPU_R4400_WORKAROUNDS
2514 config CPU_R4400_WORKAROUNDS
2517 config MIPS_ASID_SHIFT
2519 default 6 if CPU_R3000 || CPU_TX39XX
2520 default 4 if CPU_R8000
2523 config MIPS_ASID_BITS
2525 default 0 if MIPS_ASID_BITS_VARIABLE
2526 default 6 if CPU_R3000 || CPU_TX39XX
2529 config MIPS_ASID_BITS_VARIABLE
2532 config MIPS_CRC_SUPPORT
2536 # - Highmem only makes sense for the 32-bit kernel.
2537 # - The current highmem code will only work properly on physically indexed
2538 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2539 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2540 # moment we protect the user and offer the highmem option only on machines
2541 # where it's known to be safe. This will not offer highmem on a few systems
2542 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2543 # indexed CPUs but we're playing safe.
2544 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2545 # know they might have memory configurations that could make use of highmem
2549 bool "High Memory Support"
2550 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2552 config CPU_SUPPORTS_HIGHMEM
2555 config SYS_SUPPORTS_HIGHMEM
2558 config SYS_SUPPORTS_SMARTMIPS
2561 config SYS_SUPPORTS_MICROMIPS
2564 config SYS_SUPPORTS_MIPS16
2567 This option must be set if a kernel might be executed on a MIPS16-
2568 enabled CPU even if MIPS16 is not actually being used. In other
2569 words, it makes the kernel MIPS16-tolerant.
2571 config CPU_SUPPORTS_MSA
2574 config ARCH_FLATMEM_ENABLE
2576 depends on !NUMA && !CPU_LOONGSON2
2578 config ARCH_DISCONTIGMEM_ENABLE
2580 default y if SGI_IP27
2582 Say Y to support efficient handling of discontiguous physical memory,
2583 for architectures which are either NUMA (Non-Uniform Memory Access)
2584 or have huge holes in the physical address space for other reasons.
2585 See <file:Documentation/vm/numa.rst> for more.
2587 config ARCH_SPARSEMEM_ENABLE
2589 select SPARSEMEM_STATIC
2593 depends on SYS_SUPPORTS_NUMA
2595 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2596 Access). This option improves performance on systems with more
2597 than two nodes; on two node systems it is generally better to
2598 leave it disabled; on single node systems disable this option
2601 config SYS_SUPPORTS_NUMA
2605 bool "Relocatable kernel"
2606 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2608 This builds a kernel image that retains relocation information
2609 so it can be loaded someplace besides the default 1MB.
2610 The relocations make the kernel binary about 15% larger,
2611 but are discarded at runtime
2613 config RELOCATION_TABLE_SIZE
2614 hex "Relocation table size"
2615 depends on RELOCATABLE
2616 range 0x0 0x01000000
2617 default "0x00100000"
2619 A table of relocation data will be appended to the kernel binary
2620 and parsed at boot to fix up the relocated kernel.
2622 This option allows the amount of space reserved for the table to be
2623 adjusted, although the default of 1Mb should be ok in most cases.
2625 The build will fail and a valid size suggested if this is too small.
2627 If unsure, leave at the default value.
2629 config RANDOMIZE_BASE
2630 bool "Randomize the address of the kernel image"
2631 depends on RELOCATABLE
2633 Randomizes the physical and virtual address at which the
2634 kernel image is loaded, as a security feature that
2635 deters exploit attempts relying on knowledge of the location
2636 of kernel internals.
2638 Entropy is generated using any coprocessor 0 registers available.
2640 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2644 config RANDOMIZE_BASE_MAX_OFFSET
2645 hex "Maximum kASLR offset" if EXPERT
2646 depends on RANDOMIZE_BASE
2647 range 0x0 0x40000000 if EVA || 64BIT
2648 range 0x0 0x08000000
2649 default "0x01000000"
2651 When kASLR is active, this provides the maximum offset that will
2652 be applied to the kernel image. It should be set according to the
2653 amount of physical RAM available in the target system minus
2654 PHYSICAL_START and must be a power of 2.
2656 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2657 EVA or 64-bit. The default is 16Mb.
2662 depends on NEED_MULTIPLE_NODES
2664 config HW_PERF_EVENTS
2665 bool "Enable hardware performance counter support for perf events"
2666 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2669 Enable hardware performance counter support for perf events. If
2670 disabled, perf events will use software events only.
2673 bool "Multi-Processing support"
2674 depends on SYS_SUPPORTS_SMP
2676 This enables support for systems with more than one CPU. If you have
2677 a system with only one CPU, say N. If you have a system with more
2678 than one CPU, say Y.
2680 If you say N here, the kernel will run on uni- and multiprocessor
2681 machines, but will use only one CPU of a multiprocessor machine. If
2682 you say Y here, the kernel will run on many, but not all,
2683 uniprocessor machines. On a uniprocessor machine, the kernel
2684 will run faster if you say N here.
2686 People using multiprocessor machines who say Y here should also say
2687 Y to "Enhanced Real Time Clock Support", below.
2689 See also the SMP-HOWTO available at
2690 <http://www.tldp.org/docs.html#howto>.
2692 If you don't know what to do here, say N.
2695 bool "Support for hot-pluggable CPUs"
2696 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2698 Say Y here to allow turning CPUs off and on. CPUs can be
2699 controlled through /sys/devices/system/cpu.
2700 (Note: power management support will enable this option
2701 automatically on SMP systems. )
2702 Say N if you want to disable CPU hotplug.
2707 config SYS_SUPPORTS_MIPS_CMP
2710 config SYS_SUPPORTS_MIPS_CPS
2713 config SYS_SUPPORTS_SMP
2716 config NR_CPUS_DEFAULT_4
2719 config NR_CPUS_DEFAULT_8
2722 config NR_CPUS_DEFAULT_16
2725 config NR_CPUS_DEFAULT_32
2728 config NR_CPUS_DEFAULT_64
2732 int "Maximum number of CPUs (2-256)"
2735 default "4" if NR_CPUS_DEFAULT_4
2736 default "8" if NR_CPUS_DEFAULT_8
2737 default "16" if NR_CPUS_DEFAULT_16
2738 default "32" if NR_CPUS_DEFAULT_32
2739 default "64" if NR_CPUS_DEFAULT_64
2741 This allows you to specify the maximum number of CPUs which this
2742 kernel will support. The maximum supported value is 32 for 32-bit
2743 kernel and 64 for 64-bit kernels; the minimum value which makes
2744 sense is 1 for Qemu (useful only for kernel debugging purposes)
2745 and 2 for all others.
2747 This is purely to save memory - each supported CPU adds
2748 approximately eight kilobytes to the kernel image. For best
2749 performance should round up your number of processors to the next
2752 config MIPS_PERF_SHARED_TC_COUNTERS
2755 config MIPS_NR_CPU_NR_MAP_1024
2758 config MIPS_NR_CPU_NR_MAP
2761 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2762 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2765 # Timer Interrupt Frequency Configuration
2769 prompt "Timer frequency"
2772 Allows the configuration of the timer frequency.
2775 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2778 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2781 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2784 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2787 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2790 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2793 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2796 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2800 config SYS_SUPPORTS_24HZ
2803 config SYS_SUPPORTS_48HZ
2806 config SYS_SUPPORTS_100HZ
2809 config SYS_SUPPORTS_128HZ
2812 config SYS_SUPPORTS_250HZ
2815 config SYS_SUPPORTS_256HZ
2818 config SYS_SUPPORTS_1000HZ
2821 config SYS_SUPPORTS_1024HZ
2824 config SYS_SUPPORTS_ARBIT_HZ
2826 default y if !SYS_SUPPORTS_24HZ && \
2827 !SYS_SUPPORTS_48HZ && \
2828 !SYS_SUPPORTS_100HZ && \
2829 !SYS_SUPPORTS_128HZ && \
2830 !SYS_SUPPORTS_250HZ && \
2831 !SYS_SUPPORTS_256HZ && \
2832 !SYS_SUPPORTS_1000HZ && \
2833 !SYS_SUPPORTS_1024HZ
2839 default 100 if HZ_100
2840 default 128 if HZ_128
2841 default 250 if HZ_250
2842 default 256 if HZ_256
2843 default 1000 if HZ_1000
2844 default 1024 if HZ_1024
2847 def_bool HIGH_RES_TIMERS
2850 bool "Kexec system call"
2853 kexec is a system call that implements the ability to shutdown your
2854 current kernel, and to start another kernel. It is like a reboot
2855 but it is independent of the system firmware. And like a reboot
2856 you can start any kernel with it, not just Linux.
2858 The name comes from the similarity to the exec system call.
2860 It is an ongoing process to be certain the hardware in a machine
2861 is properly shutdown, so do not be surprised if this code does not
2862 initially work for you. As of this writing the exact hardware
2863 interface is strongly in flux, so no good recommendation can be
2867 bool "Kernel crash dumps"
2869 Generate crash dump after being started by kexec.
2870 This should be normally only set in special crash dump kernels
2871 which are loaded in the main kernel with kexec-tools into
2872 a specially reserved region and then later executed after
2873 a crash by kdump/kexec. The crash dump kernel must be compiled
2874 to a memory address not used by the main kernel or firmware using
2877 config PHYSICAL_START
2878 hex "Physical address where the kernel is loaded"
2879 default "0xffffffff84000000"
2880 depends on CRASH_DUMP
2882 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2883 If you plan to use kernel for capturing the crash dump change
2884 this value to start of the reserved region (the "X" value as
2885 specified in the "crashkernel=YM@XM" command line boot parameter
2886 passed to the panic-ed kernel).
2889 bool "Enable seccomp to safely compute untrusted bytecode"
2893 This kernel feature is useful for number crunching applications
2894 that may need to compute untrusted bytecode during their
2895 execution. By using pipes or other transports made available to
2896 the process as file descriptors supporting the read/write
2897 syscalls, it's possible to isolate those applications in
2898 their own address space using seccomp. Once seccomp is
2899 enabled via /proc/<pid>/seccomp, it cannot be disabled
2900 and the task is only allowed to execute a few safe syscalls
2901 defined by each seccomp mode.
2903 If unsure, say Y. Only embedded should say N here.
2905 config MIPS_O32_FP64_SUPPORT
2906 bool "Support for O32 binaries using 64-bit FP"
2907 depends on 32BIT || MIPS32_O32
2909 When this is enabled, the kernel will support use of 64-bit floating
2910 point registers with binaries using the O32 ABI along with the
2911 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2912 32-bit MIPS systems this support is at the cost of increasing the
2913 size and complexity of the compiled FPU emulator. Thus if you are
2914 running a MIPS32 system and know that none of your userland binaries
2915 will require 64-bit floating point, you may wish to reduce the size
2916 of your kernel & potentially improve FP emulation performance by
2919 Although binutils currently supports use of this flag the details
2920 concerning its effect upon the O32 ABI in userland are still being
2921 worked on. In order to avoid userland becoming dependant upon current
2922 behaviour before the details have been finalised, this option should
2923 be considered experimental and only enabled by those working upon
2931 select OF_EARLY_FLATTREE
2941 prompt "Kernel appended dtb support" if USE_OF
2942 default MIPS_NO_APPENDED_DTB
2944 config MIPS_NO_APPENDED_DTB
2947 Do not enable appended dtb support.
2949 config MIPS_ELF_APPENDED_DTB
2952 With this option, the boot code will look for a device tree binary
2953 DTB) included in the vmlinux ELF section .appended_dtb. By default
2954 it is empty and the DTB can be appended using binutils command
2957 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2959 This is meant as a backward compatiblity convenience for those
2960 systems with a bootloader that can't be upgraded to accommodate
2961 the documented boot protocol using a device tree.
2963 config MIPS_RAW_APPENDED_DTB
2964 bool "vmlinux.bin or vmlinuz.bin"
2966 With this option, the boot code will look for a device tree binary
2967 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2968 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2970 This is meant as a backward compatibility convenience for those
2971 systems with a bootloader that can't be upgraded to accommodate
2972 the documented boot protocol using a device tree.
2974 Beware that there is very little in terms of protection against
2975 this option being confused by leftover garbage in memory that might
2976 look like a DTB header after a reboot if no actual DTB is appended
2977 to vmlinux.bin. Do not leave this option active in a production kernel
2978 if you don't intend to always append a DTB.
2982 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2983 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2986 default MIPS_CMDLINE_FROM_BOOTLOADER
2988 config MIPS_CMDLINE_FROM_DTB
2990 bool "Dtb kernel arguments if available"
2992 config MIPS_CMDLINE_DTB_EXTEND
2994 bool "Extend dtb kernel arguments with bootloader arguments"
2996 config MIPS_CMDLINE_FROM_BOOTLOADER
2997 bool "Bootloader kernel arguments if available"
2999 config MIPS_CMDLINE_BUILTIN_EXTEND
3000 depends on CMDLINE_BOOL
3001 bool "Extend builtin kernel arguments with bootloader arguments"
3006 config LOCKDEP_SUPPORT
3010 config STACKTRACE_SUPPORT
3014 config HAVE_LATENCYTOP_SUPPORT
3018 config PGTABLE_LEVELS
3020 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3021 default 3 if 64BIT && !PAGE_SIZE_64KB
3024 config MIPS_AUTO_PFN_OFFSET
3027 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3029 config PCI_DRIVERS_GENERIC
3030 select PCI_DOMAINS_GENERIC if PCI
3033 config PCI_DRIVERS_LEGACY
3034 def_bool !PCI_DRIVERS_GENERIC
3035 select NO_GENERIC_PCI_IOPORT_MAP
3036 select PCI_DOMAINS if PCI
3039 # ISA support is now enabled via select. Too many systems still have the one
3040 # or other ISA chip on the board that users don't know about so don't expect
3041 # users to choose the right thing ...
3047 bool "TURBOchannel support"
3048 depends on MACH_DECSTATION
3050 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3051 processors. TURBOchannel programming specifications are available
3053 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3055 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3056 Linux driver support status is documented at:
3057 <http://www.linux-mips.org/wiki/DECstation>
3063 config ARCH_MMAP_RND_BITS_MIN
3067 config ARCH_MMAP_RND_BITS_MAX
3071 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3074 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3081 select MIPS_EXTERNAL_TIMER
3094 config MIPS32_COMPAT
3100 config SYSVIPC_COMPAT
3104 bool "Kernel support for o32 binaries"
3106 select ARCH_WANT_OLD_COMPAT_IPC
3108 select MIPS32_COMPAT
3109 select SYSVIPC_COMPAT if SYSVIPC
3111 Select this option if you want to run o32 binaries. These are pure
3112 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3113 existing binaries are in this format.
3118 bool "Kernel support for n32 binaries"
3121 select MIPS32_COMPAT
3122 select SYSVIPC_COMPAT if SYSVIPC
3124 Select this option if you want to run n32 binaries. These are
3125 64-bit binaries using 32-bit quantities for addressing and certain
3126 data that would normally be 64-bit. They are used in special
3133 default y if MIPS32_O32 || MIPS32_N32
3136 menu "Power management options"
3138 config ARCH_HIBERNATION_POSSIBLE
3140 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3142 config ARCH_SUSPEND_POSSIBLE
3144 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3146 source "kernel/power/Kconfig"
3150 config MIPS_EXTERNAL_TIMER
3153 menu "CPU Power Management"
3155 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3156 source "drivers/cpufreq/Kconfig"
3159 source "drivers/cpuidle/Kconfig"
3163 source "drivers/firmware/Kconfig"
3165 source "arch/mips/kvm/Kconfig"