1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_HAS_FORTIFY_SOURCE
9 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11 select ARCH_HAS_UBSAN_SANITIZE_ALL
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
18 select ARCH_WANT_IPC_PARSE_VERSION
19 select BUILDTIME_TABLE_SORT
20 select CLONE_BACKWARDS
21 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
22 select CPU_PM if CPU_IDLE
23 select GENERIC_ATOMIC64 if !64BIT
24 select GENERIC_CLOCKEVENTS
25 select GENERIC_CMOS_UPDATE
26 select GENERIC_CPU_AUTOPROBE
27 select GENERIC_GETTIMEOFDAY
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_ISA_DMA if EISA
32 select GENERIC_LIB_ASHLDI3
33 select GENERIC_LIB_ASHRDI3
34 select GENERIC_LIB_CMPDI2
35 select GENERIC_LIB_LSHRDI3
36 select GENERIC_LIB_UCMPDI2
37 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_TIME_VSYSCALL
40 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
41 select HANDLE_DOMAIN_IRQ
42 select HAVE_ARCH_COMPILER_H
43 select HAVE_ARCH_JUMP_LABEL
45 select HAVE_ARCH_MMAP_RND_BITS if MMU
46 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
47 select HAVE_ARCH_SECCOMP_FILTER
48 select HAVE_ARCH_TRACEHOOK
49 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
50 select HAVE_ASM_MODVERSIONS
51 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
52 select HAVE_CONTEXT_TRACKING
54 select HAVE_C_RECORDMCOUNT
55 select HAVE_DEBUG_KMEMLEAK
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_DMA_CONTIGUOUS
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
60 select HAVE_EXIT_THREAD
62 select HAVE_FTRACE_MCOUNT_RECORD
63 select HAVE_FUNCTION_GRAPH_TRACER
64 select HAVE_FUNCTION_TRACER
65 select HAVE_GCC_PLUGINS
66 select HAVE_GENERIC_VDSO
68 select HAVE_IOREMAP_PROT
69 select HAVE_IRQ_EXIT_ON_IRQ_STACK
70 select HAVE_IRQ_TIME_ACCOUNTING
72 select HAVE_KRETPROBES
73 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
74 select HAVE_MOD_ARCH_SPECIFIC
77 select HAVE_PERF_EVENTS
78 select HAVE_REGS_AND_STACK_ACCESS_API
80 select HAVE_SPARSE_SYSCALL_NR
81 select HAVE_STACKPROTECTOR
82 select HAVE_SYSCALL_TRACEPOINTS
83 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
84 select IRQ_FORCED_THREADING
86 select MODULES_USE_ELF_REL if MODULES
87 select MODULES_USE_ELF_RELA if MODULES && 64BIT
88 select PERF_USE_VMALLOC
90 select SYSCTL_EXCEPTION_TRACE
93 config MIPS_FIXUP_BIGPHYS_ADDR
96 menu "Machine selection"
103 bool "Generic board-agnostic MIPS kernel"
107 select CLKSRC_MIPS_GIC
109 select CPU_MIPSR2_IRQ_EI
110 select CPU_MIPSR2_IRQ_VI
112 select DMA_PERDEV_COHERENT
115 select MIPS_AUTO_PFN_OFFSET
116 select MIPS_CPU_SCACHE
118 select MIPS_L1_CACHE_SHIFT_7
119 select NO_EXCEPT_FILL
120 select PCI_DRIVERS_GENERIC
123 select SYS_HAS_CPU_MIPS32_R1
124 select SYS_HAS_CPU_MIPS32_R2
125 select SYS_HAS_CPU_MIPS32_R6
126 select SYS_HAS_CPU_MIPS64_R1
127 select SYS_HAS_CPU_MIPS64_R2
128 select SYS_HAS_CPU_MIPS64_R6
129 select SYS_SUPPORTS_32BIT_KERNEL
130 select SYS_SUPPORTS_64BIT_KERNEL
131 select SYS_SUPPORTS_BIG_ENDIAN
132 select SYS_SUPPORTS_HIGHMEM
133 select SYS_SUPPORTS_LITTLE_ENDIAN
134 select SYS_SUPPORTS_MICROMIPS
135 select SYS_SUPPORTS_MIPS16
136 select SYS_SUPPORTS_MIPS_CPS
137 select SYS_SUPPORTS_MULTITHREADING
138 select SYS_SUPPORTS_RELOCATABLE
139 select SYS_SUPPORTS_SMARTMIPS
141 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
142 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
143 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
144 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
145 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
146 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
149 Select this to build a kernel which aims to support multiple boards,
150 generally using a flattened device tree passed from the bootloader
151 using the boot protocol defined in the UHI (Unified Hosting
152 Interface) specification.
155 bool "Alchemy processor based machines"
156 select PHYS_ADDR_T_64BIT
160 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
161 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
162 select SYS_HAS_CPU_MIPS32_R1
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_APM_EMULATION
166 select SYS_SUPPORTS_ZBOOT
170 bool "Texas Instruments AR7"
172 select DMA_NONCOHERENT
176 select NO_EXCEPT_FILL
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_HAS_EARLY_PRINTK
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_SUPPORTS_LITTLE_ENDIAN
182 select SYS_SUPPORTS_MIPS16
183 select SYS_SUPPORTS_ZBOOT_UART16550
186 select HAVE_LEGACY_CLK
188 Support for the Texas Instruments AR7 System-on-a-Chip
189 family: TNETD7100, 7200 and 7300.
192 bool "Atheros AR231x/AR531x SoC support"
195 select DMA_NONCOHERENT
198 select SYS_HAS_CPU_MIPS32_R1
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_HAS_EARLY_PRINTK
203 Support for Atheros AR231x and Atheros AR531x based boards
206 bool "Atheros AR71XX/AR724X/AR913X based boards"
207 select ARCH_HAS_RESET_CONTROLLER
211 select DMA_NONCOHERENT
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_HAS_EARLY_PRINTK
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_MIPS16
221 select SYS_SUPPORTS_ZBOOT_UART_PROM
223 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
225 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
228 bool "Broadcom Generic BMIPS kernel"
229 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
230 select ARCH_HAS_PHYS_TO_DMA
232 select NO_EXCEPT_FILL
238 select BCM6345_L1_IRQ
239 select BCM7038_L1_IRQ
240 select BCM7120_L2_IRQ
241 select BRCMSTB_L2_IRQ
243 select DMA_NONCOHERENT
244 select SYS_SUPPORTS_32BIT_KERNEL
245 select SYS_SUPPORTS_LITTLE_ENDIAN
246 select SYS_SUPPORTS_BIG_ENDIAN
247 select SYS_SUPPORTS_HIGHMEM
248 select SYS_HAS_CPU_BMIPS32_3300
249 select SYS_HAS_CPU_BMIPS4350
250 select SYS_HAS_CPU_BMIPS4380
251 select SYS_HAS_CPU_BMIPS5000
253 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
254 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
255 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
256 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
257 select HARDIRQS_SW_RESEND
259 Build a generic DT-based kernel image that boots on select
260 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
261 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
262 must be set appropriately for your board.
265 bool "Broadcom BCM47XX based boards"
269 select DMA_NONCOHERENT
272 select SYS_HAS_CPU_MIPS32_R1
273 select NO_EXCEPT_FILL
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_LITTLE_ENDIAN
276 select SYS_SUPPORTS_MIPS16
277 select SYS_SUPPORTS_ZBOOT
278 select SYS_HAS_EARLY_PRINTK
279 select USE_GENERIC_EARLY_PRINTK_8250
281 select LEDS_GPIO_REGISTER
284 select BCM47XX_SSB if !BCM47XX_BCMA
286 Support for BCM47XX based boards
289 bool "Broadcom BCM63XX based boards"
294 select DMA_NONCOHERENT
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_BIG_ENDIAN
298 select SYS_HAS_EARLY_PRINTK
301 select MIPS_L1_CACHE_SHIFT_4
303 select HAVE_LEGACY_CLK
305 Support for BCM63XX based boards
312 select DMA_NONCOHERENT
318 select PCI_GT64XXX_PCI0
319 select SYS_HAS_CPU_NEVADA
320 select SYS_HAS_EARLY_PRINTK
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_64BIT_KERNEL
323 select SYS_SUPPORTS_LITTLE_ENDIAN
324 select USE_GENERIC_EARLY_PRINTK_8250
326 config MACH_DECSTATION
330 select CEVT_R4K if CPU_R4X00
332 select CSRC_R4K if CPU_R4X00
333 select CPU_DADDI_WORKAROUNDS if 64BIT
334 select CPU_R4000_WORKAROUNDS if 64BIT
335 select CPU_R4400_WORKAROUNDS if 64BIT
336 select DMA_NONCOHERENT
339 select SYS_HAS_CPU_R3000
340 select SYS_HAS_CPU_R4X00
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_LITTLE_ENDIAN
344 select SYS_SUPPORTS_128HZ
345 select SYS_SUPPORTS_256HZ
346 select SYS_SUPPORTS_1024HZ
347 select MIPS_L1_CACHE_SHIFT_4
349 This enables support for DEC's MIPS based workstations. For details
350 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
351 DECstation porting pages on <http://decstation.unix-ag.org/>.
353 If you have one of the following DECstation Models you definitely
354 want to choose R4xx0 for the CPU Type:
361 otherwise choose R3000.
364 bool "Jazz family of machines"
367 select ARCH_MIGHT_HAVE_PC_PARPORT
368 select ARCH_MIGHT_HAVE_PC_SERIO
372 select ARCH_MAY_HAVE_PC_FDC
375 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
376 select GENERIC_ISA_DMA
377 select HAVE_PCSPKR_PLATFORM
382 select SYS_HAS_CPU_R4X00
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_64BIT_KERNEL
385 select SYS_SUPPORTS_100HZ
387 This a family of machines based on the MIPS R4030 chipset which was
388 used by several vendors to build RISC/os and Windows NT workstations.
389 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
390 Olivetti M700-10 workstations.
393 bool "Ingenic SoC based machines"
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_ZBOOT_UART16550
397 select CPU_SUPPORTS_HUGEPAGES
398 select DMA_NONCOHERENT
403 select GENERIC_IRQ_CHIP
404 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
408 bool "Lantiq based platforms"
409 select DMA_NONCOHERENT
413 select SYS_HAS_CPU_MIPS32_R1
414 select SYS_HAS_CPU_MIPS32_R2
415 select SYS_SUPPORTS_BIG_ENDIAN
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_MIPS16
418 select SYS_SUPPORTS_MULTITHREADING
419 select SYS_SUPPORTS_VPE_LOADER
420 select SYS_HAS_EARLY_PRINTK
425 select HAVE_LEGACY_CLK
428 select PINCTRL_LANTIQ
429 select ARCH_HAS_RESET_CONTROLLER
430 select RESET_CONTROLLER
432 config MACH_LOONGSON32
433 bool "Loongson 32-bit family of machines"
434 select SYS_SUPPORTS_ZBOOT
436 This enables support for the Loongson-1 family of machines.
438 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
439 the Institute of Computing Technology (ICT), Chinese Academy of
442 config MACH_LOONGSON2EF
443 bool "Loongson-2E/F family of machines"
444 select SYS_SUPPORTS_ZBOOT
446 This enables the support of early Loongson-2E/F family of machines.
448 config MACH_LOONGSON64
449 bool "Loongson 64-bit family of machines"
450 select ARCH_SPARSEMEM_ENABLE
451 select ARCH_MIGHT_HAVE_PC_PARPORT
452 select ARCH_MIGHT_HAVE_PC_SERIO
453 select GENERIC_ISA_DMA_SUPPORT_BROKEN
463 select NO_EXCEPT_FILL
464 select NR_CPUS_DEFAULT_64
465 select USE_GENERIC_EARLY_PRINTK_8250
466 select PCI_DRIVERS_GENERIC
467 select SYS_HAS_CPU_LOONGSON64
468 select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_SMP
470 select SYS_SUPPORTS_HOTPLUG_CPU
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_64BIT_KERNEL
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_LITTLE_ENDIAN
475 select SYS_SUPPORTS_ZBOOT
481 select PCI_HOST_GENERIC
483 This enables the support of Loongson-2/3 family of machines.
485 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
486 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
487 and Loongson-2F which will be removed), developed by the Institute
488 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
490 config MACH_PISTACHIO
491 bool "IMG Pistachio SoC based boards"
495 select CLKSRC_MIPS_GIC
498 select DMA_NONCOHERENT
502 select MIPS_CPU_SCACHE
506 select SYS_HAS_CPU_MIPS32_R2
507 select SYS_SUPPORTS_32BIT_KERNEL
508 select SYS_SUPPORTS_LITTLE_ENDIAN
509 select SYS_SUPPORTS_MIPS_CPS
510 select SYS_SUPPORTS_MULTITHREADING
511 select SYS_SUPPORTS_RELOCATABLE
512 select SYS_SUPPORTS_ZBOOT
513 select SYS_HAS_EARLY_PRINTK
514 select USE_GENERIC_EARLY_PRINTK_8250
517 This enables support for the IMG Pistachio SoC platform.
520 bool "MIPS Malta board"
521 select ARCH_MAY_HAVE_PC_FDC
522 select ARCH_MIGHT_HAVE_PC_PARPORT
523 select ARCH_MIGHT_HAVE_PC_SERIO
528 select CLKSRC_MIPS_GIC
531 select DMA_MAYBE_COHERENT
532 select GENERIC_ISA_DMA
533 select HAVE_PCSPKR_PLATFORM
539 select MIPS_CPU_SCACHE
541 select MIPS_L1_CACHE_SHIFT_6
543 select PCI_GT64XXX_PCI0
546 select SYS_HAS_CPU_MIPS32_R1
547 select SYS_HAS_CPU_MIPS32_R2
548 select SYS_HAS_CPU_MIPS32_R3_5
549 select SYS_HAS_CPU_MIPS32_R5
550 select SYS_HAS_CPU_MIPS32_R6
551 select SYS_HAS_CPU_MIPS64_R1
552 select SYS_HAS_CPU_MIPS64_R2
553 select SYS_HAS_CPU_MIPS64_R6
554 select SYS_HAS_CPU_NEVADA
555 select SYS_HAS_CPU_RM7000
556 select SYS_SUPPORTS_32BIT_KERNEL
557 select SYS_SUPPORTS_64BIT_KERNEL
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_HIGHMEM
560 select SYS_SUPPORTS_LITTLE_ENDIAN
561 select SYS_SUPPORTS_MICROMIPS
562 select SYS_SUPPORTS_MIPS16
563 select SYS_SUPPORTS_MIPS_CMP
564 select SYS_SUPPORTS_MIPS_CPS
565 select SYS_SUPPORTS_MULTITHREADING
566 select SYS_SUPPORTS_RELOCATABLE
567 select SYS_SUPPORTS_SMARTMIPS
568 select SYS_SUPPORTS_VPE_LOADER
569 select SYS_SUPPORTS_ZBOOT
571 select ZONE_DMA32 if 64BIT
573 This enables support for the MIPS Technologies Malta evaluation
577 bool "Microchip PIC32 Family"
579 This enables support for the Microchip PIC32 family of platforms.
581 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
585 bool "NEC VR4100 series based machines"
588 select SYS_HAS_CPU_VR41XX
589 select SYS_SUPPORTS_MIPS16
593 bool "NXP STB220 board"
596 Support for NXP Semiconductors STB220 Development Board.
603 Support for NXP Semiconductors STB225 Development Board.
606 bool "Ralink based machines"
610 select DMA_NONCOHERENT
613 select SYS_HAS_CPU_MIPS32_R1
614 select SYS_HAS_CPU_MIPS32_R2
615 select SYS_SUPPORTS_32BIT_KERNEL
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select SYS_SUPPORTS_MIPS16
618 select SYS_HAS_EARLY_PRINTK
620 select ARCH_HAS_RESET_CONTROLLER
621 select RESET_CONTROLLER
624 bool "SGI IP22 (Indy/Indigo2)"
629 select ARCH_MIGHT_HAVE_PC_SERIO
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
638 select IP22_CPU_SCACHE
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
642 select SGI_HAS_INDYDOG
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
650 select SYS_HAS_EARLY_PRINTK
651 select SYS_SUPPORTS_32BIT_KERNEL
652 select SYS_SUPPORTS_64BIT_KERNEL
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select MIPS_L1_CACHE_SHIFT_7
656 This are the SGI Indy, Challenge S and Indigo2, as well as certain
657 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
658 that runs on these, say Y here.
661 bool "SGI IP27 (Origin200/2000)"
662 select ARCH_HAS_PHYS_TO_DMA
663 select ARCH_SPARSEMEM_ENABLE
666 select ARC_CMDLINE_ONLY
668 select DEFAULT_SGI_PARTITION
669 select SYS_HAS_EARLY_PRINTK
672 select IRQ_DOMAIN_HIERARCHY
673 select NR_CPUS_DEFAULT_64
674 select PCI_DRIVERS_GENERIC
675 select PCI_XTALK_BRIDGE
676 select SYS_HAS_CPU_R10000
677 select SYS_SUPPORTS_64BIT_KERNEL
678 select SYS_SUPPORTS_BIG_ENDIAN
679 select SYS_SUPPORTS_NUMA
680 select SYS_SUPPORTS_SMP
681 select MIPS_L1_CACHE_SHIFT_7
684 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
685 workstations. To compile a Linux kernel that runs on these, say Y
689 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
713 select SYS_HAS_EARLY_PRINTK
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select MIPS_L1_CACHE_SHIFT_7
718 This is the SGI Indigo2 with R10000 processor. To compile a Linux
719 kernel that runs on these, say Y here.
722 bool "SGI IP30 (Octane/Octane2)"
723 select ARCH_HAS_PHYS_TO_DMA
729 select SYNC_R4K if SMP
733 select IRQ_DOMAIN_HIERARCHY
734 select NR_CPUS_DEFAULT_2
735 select PCI_DRIVERS_GENERIC
736 select PCI_XTALK_BRIDGE
737 select SYS_HAS_EARLY_PRINTK
738 select SYS_HAS_CPU_R10000
739 select SYS_SUPPORTS_64BIT_KERNEL
740 select SYS_SUPPORTS_BIG_ENDIAN
741 select SYS_SUPPORTS_SMP
742 select MIPS_L1_CACHE_SHIFT_7
745 These are the SGI Octane and Octane2 graphics workstations. To
746 compile a Linux kernel that runs on these, say Y here.
752 select ARCH_HAS_PHYS_TO_DMA
758 select DMA_NONCOHERENT
761 select R5000_CPU_SCACHE
762 select RM7000_CPU_SCACHE
763 select SYS_HAS_CPU_R5000
764 select SYS_HAS_CPU_R10000 if BROKEN
765 select SYS_HAS_CPU_RM7000
766 select SYS_HAS_CPU_NEVADA
767 select SYS_SUPPORTS_64BIT_KERNEL
768 select SYS_SUPPORTS_BIG_ENDIAN
770 If you want this kernel to run on SGI O2 workstation, say Y here.
773 bool "Sibyte BCM91120C-CRhine"
775 select SIBYTE_BCM1120
777 select SYS_HAS_CPU_SB1
778 select SYS_SUPPORTS_BIG_ENDIAN
779 select SYS_SUPPORTS_LITTLE_ENDIAN
782 bool "Sibyte BCM91120x-Carmel"
784 select SIBYTE_BCM1120
786 select SYS_HAS_CPU_SB1
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_LITTLE_ENDIAN
791 bool "Sibyte BCM91125C-CRhone"
793 select SIBYTE_BCM1125
795 select SYS_HAS_CPU_SB1
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
798 select SYS_SUPPORTS_LITTLE_ENDIAN
801 bool "Sibyte BCM91125E-Rhone"
803 select SIBYTE_BCM1125H
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_LITTLE_ENDIAN
810 bool "Sibyte BCM91250A-SWARM"
812 select HAVE_PATA_PLATFORM
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_HIGHMEM
818 select SYS_SUPPORTS_LITTLE_ENDIAN
819 select ZONE_DMA32 if 64BIT
820 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
822 config SIBYTE_LITTLESUR
823 bool "Sibyte BCM91250C2-LittleSur"
825 select HAVE_PATA_PLATFORM
828 select SYS_HAS_CPU_SB1
829 select SYS_SUPPORTS_BIG_ENDIAN
830 select SYS_SUPPORTS_HIGHMEM
831 select SYS_SUPPORTS_LITTLE_ENDIAN
832 select ZONE_DMA32 if 64BIT
834 config SIBYTE_SENTOSA
835 bool "Sibyte BCM91250E-Sentosa"
839 select SYS_HAS_CPU_SB1
840 select SYS_SUPPORTS_BIG_ENDIAN
841 select SYS_SUPPORTS_LITTLE_ENDIAN
842 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
845 bool "Sibyte BCM91480B-BigSur"
847 select NR_CPUS_DEFAULT_4
848 select SIBYTE_BCM1x80
850 select SYS_HAS_CPU_SB1
851 select SYS_SUPPORTS_BIG_ENDIAN
852 select SYS_SUPPORTS_HIGHMEM
853 select SYS_SUPPORTS_LITTLE_ENDIAN
854 select ZONE_DMA32 if 64BIT
855 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
858 bool "SNI RM200/300/400"
861 select FW_ARC if CPU_LITTLE_ENDIAN
862 select FW_ARC32 if CPU_LITTLE_ENDIAN
863 select FW_SNIPROM if CPU_BIG_ENDIAN
864 select ARCH_MAY_HAVE_PC_FDC
865 select ARCH_MIGHT_HAVE_PC_PARPORT
866 select ARCH_MIGHT_HAVE_PC_SERIO
870 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
871 select DMA_NONCOHERENT
872 select GENERIC_ISA_DMA
874 select HAVE_PCSPKR_PLATFORM
880 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
881 select SYS_HAS_CPU_R4X00
882 select SYS_HAS_CPU_R5000
883 select SYS_HAS_CPU_R10000
884 select R5000_CPU_SCACHE
885 select SYS_HAS_EARLY_PRINTK
886 select SYS_SUPPORTS_32BIT_KERNEL
887 select SYS_SUPPORTS_64BIT_KERNEL
888 select SYS_SUPPORTS_BIG_ENDIAN
889 select SYS_SUPPORTS_HIGHMEM
890 select SYS_SUPPORTS_LITTLE_ENDIAN
892 The SNI RM200/300/400 are MIPS-based machines manufactured by
893 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
894 Technology and now in turn merged with Fujitsu. Say Y here to
895 support this machine type.
898 bool "Toshiba TX39 series based machines"
901 bool "Toshiba TX49 series based machines"
903 config MIKROTIK_RB532
904 bool "Mikrotik RB532 boards"
907 select DMA_NONCOHERENT
910 select SYS_HAS_CPU_MIPS32_R1
911 select SYS_SUPPORTS_32BIT_KERNEL
912 select SYS_SUPPORTS_LITTLE_ENDIAN
916 select MIPS_L1_CACHE_SHIFT_4
918 Support the Mikrotik(tm) RouterBoard 532 series,
919 based on the IDT RC32434 SoC.
921 config CAVIUM_OCTEON_SOC
922 bool "Cavium Networks Octeon SoC based boards"
924 select ARCH_HAS_PHYS_TO_DMA
926 select PHYS_ADDR_T_64BIT
927 select SYS_SUPPORTS_64BIT_KERNEL
928 select SYS_SUPPORTS_BIG_ENDIAN
930 select EDAC_ATOMIC_SCRUB
931 select SYS_SUPPORTS_LITTLE_ENDIAN
932 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
933 select SYS_HAS_EARLY_PRINTK
934 select SYS_HAS_CPU_CAVIUM_OCTEON
936 select HAVE_PLAT_DELAY
937 select HAVE_PLAT_FW_INIT_CMDLINE
938 select HAVE_PLAT_MEMCPY
943 select ARCH_SPARSEMEM_ENABLE
944 select SYS_SUPPORTS_SMP
945 select NR_CPUS_DEFAULT_64
946 select MIPS_NR_CPU_NR_MAP_1024
948 select MTD_COMPLEX_MAPPINGS
950 select SYS_SUPPORTS_RELOCATABLE
952 This option supports all of the Octeon reference boards from Cavium
953 Networks. It builds a kernel that dynamically determines the Octeon
954 CPU type and supports all known board reference implementations.
955 Some of the supported boards are:
962 Say Y here for most Octeon reference boards.
965 bool "Netlogic XLR/XLS based systems"
968 select SYS_HAS_CPU_XLR
969 select SYS_SUPPORTS_SMP
972 select SYS_SUPPORTS_32BIT_KERNEL
973 select SYS_SUPPORTS_64BIT_KERNEL
974 select PHYS_ADDR_T_64BIT
975 select SYS_SUPPORTS_BIG_ENDIAN
976 select SYS_SUPPORTS_HIGHMEM
977 select NR_CPUS_DEFAULT_32
981 select ZONE_DMA32 if 64BIT
983 select SYS_HAS_EARLY_PRINTK
984 select SYS_SUPPORTS_ZBOOT
985 select SYS_SUPPORTS_ZBOOT_UART16550
987 Support for systems based on Netlogic XLR and XLS processors.
988 Say Y here if you have a XLR or XLS based board.
991 bool "Netlogic XLP based systems"
994 select SYS_HAS_CPU_XLP
995 select SYS_SUPPORTS_SMP
997 select SYS_SUPPORTS_32BIT_KERNEL
998 select SYS_SUPPORTS_64BIT_KERNEL
999 select PHYS_ADDR_T_64BIT
1001 select SYS_SUPPORTS_BIG_ENDIAN
1002 select SYS_SUPPORTS_LITTLE_ENDIAN
1003 select SYS_SUPPORTS_HIGHMEM
1004 select NR_CPUS_DEFAULT_32
1008 select ZONE_DMA32 if 64BIT
1010 select SYS_HAS_EARLY_PRINTK
1012 select SYS_SUPPORTS_ZBOOT
1013 select SYS_SUPPORTS_ZBOOT_UART16550
1015 This board is based on Netlogic XLP Processor.
1016 Say Y here if you have a XLP based board.
1020 source "arch/mips/alchemy/Kconfig"
1021 source "arch/mips/ath25/Kconfig"
1022 source "arch/mips/ath79/Kconfig"
1023 source "arch/mips/bcm47xx/Kconfig"
1024 source "arch/mips/bcm63xx/Kconfig"
1025 source "arch/mips/bmips/Kconfig"
1026 source "arch/mips/generic/Kconfig"
1027 source "arch/mips/jazz/Kconfig"
1028 source "arch/mips/jz4740/Kconfig"
1029 source "arch/mips/lantiq/Kconfig"
1030 source "arch/mips/pic32/Kconfig"
1031 source "arch/mips/pistachio/Kconfig"
1032 source "arch/mips/ralink/Kconfig"
1033 source "arch/mips/sgi-ip27/Kconfig"
1034 source "arch/mips/sibyte/Kconfig"
1035 source "arch/mips/txx9/Kconfig"
1036 source "arch/mips/vr41xx/Kconfig"
1037 source "arch/mips/cavium-octeon/Kconfig"
1038 source "arch/mips/loongson2ef/Kconfig"
1039 source "arch/mips/loongson32/Kconfig"
1040 source "arch/mips/loongson64/Kconfig"
1041 source "arch/mips/netlogic/Kconfig"
1045 config GENERIC_HWEIGHT
1049 config GENERIC_CALIBRATE_DELAY
1053 config SCHED_OMIT_FRAME_POINTER
1058 # Select some configuration options automatically based on user selections.
1063 config ARCH_MAY_HAVE_PC_FDC
1094 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1100 config MIPS_CLOCK_VSYSCALL
1101 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1110 config ARCH_SUPPORTS_UPROBES
1113 config DMA_MAYBE_COHERENT
1114 select ARCH_HAS_DMA_COHERENCE_H
1115 select DMA_NONCOHERENT
1118 config DMA_PERDEV_COHERENT
1120 select ARCH_HAS_SETUP_DMA_OPS
1121 select DMA_NONCOHERENT
1123 config DMA_NONCOHERENT
1126 # MIPS allows mixing "slightly different" Cacheability and Coherency
1127 # Attribute bits. It is believed that the uncached access through
1128 # KSEG1 and the implementation specific "uncached accelerated" used
1129 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1130 # significant advantages.
1132 select ARCH_HAS_DMA_WRITE_COMBINE
1133 select ARCH_HAS_DMA_PREP_COHERENT
1134 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1135 select ARCH_HAS_DMA_SET_UNCACHED
1136 select DMA_NONCOHERENT_MMAP
1137 select DMA_NONCOHERENT_CACHE_SYNC
1138 select NEED_DMA_MAP_STATE
1140 config SYS_HAS_EARLY_PRINTK
1143 config SYS_SUPPORTS_HOTPLUG_CPU
1146 config MIPS_BONITO64
1155 config NO_IOPORT_MAP
1159 def_bool CPU_NO_LOAD_STORE_LR
1161 config GENERIC_ISA_DMA
1163 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1166 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1168 select GENERIC_ISA_DMA
1170 config HAVE_PLAT_DELAY
1173 config HAVE_PLAT_FW_INIT_CMDLINE
1176 config HAVE_PLAT_MEMCPY
1182 config HOLES_IN_ZONE
1185 config SYS_SUPPORTS_RELOCATABLE
1188 Selected if the platform supports relocating the kernel.
1189 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1190 to allow access to command line and entropy sources.
1192 config MIPS_CBPF_JIT
1194 depends on BPF_JIT && HAVE_CBPF_JIT
1196 config MIPS_EBPF_JIT
1198 depends on BPF_JIT && HAVE_EBPF_JIT
1202 # Endianness selection. Sufficiently obscure so many users don't know what to
1203 # answer,so we try hard to limit the available choices. Also the use of a
1204 # choice statement should be more obvious to the user.
1207 prompt "Endianness selection"
1209 Some MIPS machines can be configured for either little or big endian
1210 byte order. These modes require different kernels and a different
1211 Linux distribution. In general there is one preferred byteorder for a
1212 particular system but some systems are just as commonly used in the
1213 one or the other endianness.
1215 config CPU_BIG_ENDIAN
1217 depends on SYS_SUPPORTS_BIG_ENDIAN
1219 config CPU_LITTLE_ENDIAN
1220 bool "Little endian"
1221 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1228 config SYS_SUPPORTS_APM_EMULATION
1231 config SYS_SUPPORTS_BIG_ENDIAN
1234 config SYS_SUPPORTS_LITTLE_ENDIAN
1237 config SYS_SUPPORTS_HUGETLBFS
1239 depends on CPU_SUPPORTS_HUGEPAGES
1242 config MIPS_HUGE_TLB_SUPPORT
1243 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1260 config PCI_GT64XXX_PCI0
1263 config PCI_XTALK_BRIDGE
1266 config NO_EXCEPT_FILL
1274 select DMA_NONCOHERENT
1275 select SYS_HAS_CPU_MIPS32_R2
1276 select SYS_SUPPORTS_32BIT_KERNEL
1277 select SYS_SUPPORTS_LITTLE_ENDIAN
1278 select SYS_SUPPORTS_BIG_ENDIAN
1279 select SYS_SUPPORTS_MIPS16
1280 select CPU_MIPSR2_IRQ_VI
1289 config SWAP_IO_SPACE
1292 config SGI_HAS_INDYDOG
1304 config SGI_HAS_ZILOG
1307 config SGI_HAS_I8042
1310 config DEFAULT_SGI_PARTITION
1322 config MIPS_L1_CACHE_SHIFT_4
1325 config MIPS_L1_CACHE_SHIFT_5
1328 config MIPS_L1_CACHE_SHIFT_6
1331 config MIPS_L1_CACHE_SHIFT_7
1334 config MIPS_L1_CACHE_SHIFT
1336 default "7" if MIPS_L1_CACHE_SHIFT_7
1337 default "6" if MIPS_L1_CACHE_SHIFT_6
1338 default "5" if MIPS_L1_CACHE_SHIFT_5
1339 default "4" if MIPS_L1_CACHE_SHIFT_4
1342 config ARC_CMDLINE_ONLY
1346 bool "ARC console support"
1347 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1361 menu "CPU selection"
1367 config CPU_LOONGSON64
1368 bool "Loongson 64-bit CPU"
1369 depends on SYS_HAS_CPU_LOONGSON64
1370 select ARCH_HAS_PHYS_TO_DMA
1372 select CPU_HAS_PREFETCH
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_HUGEPAGES
1376 select CPU_SUPPORTS_MSA
1377 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1378 select CPU_MIPSR2_IRQ_VI
1379 select WEAK_ORDERING
1380 select WEAK_REORDERING_BEYOND_LLSC
1381 select MIPS_ASID_BITS_VARIABLE
1382 select MIPS_PGD_C0_CONTEXT
1383 select MIPS_L1_CACHE_SHIFT_6
1388 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1389 cores implements the MIPS64R2 instruction set with many extensions,
1390 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1391 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1392 Loongson-2E/2F is not covered here and will be removed in future.
1394 config LOONGSON3_ENHANCEMENT
1395 bool "New Loongson-3 CPU Enhancements"
1397 depends on CPU_LOONGSON64
1399 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1400 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1401 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1402 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1403 Fast TLB refill support, etc.
1405 This option enable those enhancements which are not probed at run
1406 time. If you want a generic kernel to run on all Loongson 3 machines,
1407 please say 'N' here. If you want a high-performance kernel to run on
1408 new Loongson-3 machines only, please say 'Y' here.
1410 config CPU_LOONGSON3_WORKAROUNDS
1411 bool "Old Loongson-3 LLSC Workarounds"
1413 depends on CPU_LOONGSON64
1415 Loongson-3 processors have the llsc issues which require workarounds.
1416 Without workarounds the system may hang unexpectedly.
1418 Newer Loongson-3 will fix these issues and no workarounds are needed.
1419 The workarounds have no significant side effect on them but may
1420 decrease the performance of the system so this option should be
1421 disabled unless the kernel is intended to be run on old systems.
1423 If unsure, please say Y.
1425 config CPU_LOONGSON3_CPUCFG_EMULATION
1426 bool "Emulate the CPUCFG instruction on older Loongson cores"
1428 depends on CPU_LOONGSON64
1430 Loongson-3A R4 and newer have the CPUCFG instruction available for
1431 userland to query CPU capabilities, much like CPUID on x86. This
1432 option provides emulation of the instruction on older Loongson
1433 cores, back to Loongson-3A1000.
1435 If unsure, please say Y.
1437 config CPU_LOONGSON2E
1439 depends on SYS_HAS_CPU_LOONGSON2E
1440 select CPU_LOONGSON2EF
1442 The Loongson 2E processor implements the MIPS III instruction set
1443 with many extensions.
1445 It has an internal FPGA northbridge, which is compatible to
1448 config CPU_LOONGSON2F
1450 depends on SYS_HAS_CPU_LOONGSON2F
1451 select CPU_LOONGSON2EF
1454 The Loongson 2F processor implements the MIPS III instruction set
1455 with many extensions.
1457 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1458 have a similar programming interface with FPGA northbridge used in
1461 config CPU_LOONGSON1B
1463 depends on SYS_HAS_CPU_LOONGSON1B
1464 select CPU_LOONGSON32
1465 select LEDS_GPIO_REGISTER
1467 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1468 Release 1 instruction set and part of the MIPS32 Release 2
1471 config CPU_LOONGSON1C
1473 depends on SYS_HAS_CPU_LOONGSON1C
1474 select CPU_LOONGSON32
1475 select LEDS_GPIO_REGISTER
1477 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1478 Release 1 instruction set and part of the MIPS32 Release 2
1481 config CPU_MIPS32_R1
1482 bool "MIPS32 Release 1"
1483 depends on SYS_HAS_CPU_MIPS32_R1
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1488 Choose this option to build a kernel for release 1 or later of the
1489 MIPS32 architecture. Most modern embedded systems with a 32-bit
1490 MIPS processor are based on a MIPS32 processor. If you know the
1491 specific type of processor in your system, choose those that one
1492 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1493 Release 2 of the MIPS32 architecture is available since several
1494 years so chances are you even have a MIPS32 Release 2 processor
1495 in which case you should choose CPU_MIPS32_R2 instead for better
1498 config CPU_MIPS32_R2
1499 bool "MIPS32 Release 2"
1500 depends on SYS_HAS_CPU_MIPS32_R2
1501 select CPU_HAS_PREFETCH
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select CPU_SUPPORTS_HIGHMEM
1504 select CPU_SUPPORTS_MSA
1507 Choose this option to build a kernel for release 2 or later of the
1508 MIPS32 architecture. Most modern embedded systems with a 32-bit
1509 MIPS processor are based on a MIPS32 processor. If you know the
1510 specific type of processor in your system, choose those that one
1511 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1513 config CPU_MIPS32_R5
1514 bool "MIPS32 Release 5"
1515 depends on SYS_HAS_CPU_MIPS32_R5
1516 select CPU_HAS_PREFETCH
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_HIGHMEM
1519 select CPU_SUPPORTS_MSA
1521 select MIPS_O32_FP64_SUPPORT
1523 Choose this option to build a kernel for release 5 or later of the
1524 MIPS32 architecture. New MIPS processors, starting with the Warrior
1525 family, are based on a MIPS32r5 processor. If you own an older
1526 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1528 config CPU_MIPS32_R6
1529 bool "MIPS32 Release 6"
1530 depends on SYS_HAS_CPU_MIPS32_R6
1531 select CPU_HAS_PREFETCH
1532 select CPU_NO_LOAD_STORE_LR
1533 select CPU_SUPPORTS_32BIT_KERNEL
1534 select CPU_SUPPORTS_HIGHMEM
1535 select CPU_SUPPORTS_MSA
1537 select MIPS_O32_FP64_SUPPORT
1539 Choose this option to build a kernel for release 6 or later of the
1540 MIPS32 architecture. New MIPS processors, starting with the Warrior
1541 family, are based on a MIPS32r6 processor. If you own an older
1542 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1544 config CPU_MIPS64_R1
1545 bool "MIPS64 Release 1"
1546 depends on SYS_HAS_CPU_MIPS64_R1
1547 select CPU_HAS_PREFETCH
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_64BIT_KERNEL
1550 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_SUPPORTS_HUGEPAGES
1553 Choose this option to build a kernel for release 1 or later of the
1554 MIPS64 architecture. Many modern embedded systems with a 64-bit
1555 MIPS processor are based on a MIPS64 processor. If you know the
1556 specific type of processor in your system, choose those that one
1557 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1558 Release 2 of the MIPS64 architecture is available since several
1559 years so chances are you even have a MIPS64 Release 2 processor
1560 in which case you should choose CPU_MIPS64_R2 instead for better
1563 config CPU_MIPS64_R2
1564 bool "MIPS64 Release 2"
1565 depends on SYS_HAS_CPU_MIPS64_R2
1566 select CPU_HAS_PREFETCH
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select CPU_SUPPORTS_HIGHMEM
1570 select CPU_SUPPORTS_HUGEPAGES
1571 select CPU_SUPPORTS_MSA
1574 Choose this option to build a kernel for release 2 or later of the
1575 MIPS64 architecture. Many modern embedded systems with a 64-bit
1576 MIPS processor are based on a MIPS64 processor. If you know the
1577 specific type of processor in your system, choose those that one
1578 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1580 config CPU_MIPS64_R5
1581 bool "MIPS64 Release 5"
1582 depends on SYS_HAS_CPU_MIPS64_R5
1583 select CPU_HAS_PREFETCH
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HIGHMEM
1587 select CPU_SUPPORTS_HUGEPAGES
1588 select CPU_SUPPORTS_MSA
1589 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1592 Choose this option to build a kernel for release 5 or later of the
1593 MIPS64 architecture. This is a intermediate MIPS architecture
1594 release partly implementing release 6 features. Though there is no
1595 any hardware known to be based on this release.
1597 config CPU_MIPS64_R6
1598 bool "MIPS64 Release 6"
1599 depends on SYS_HAS_CPU_MIPS64_R6
1600 select CPU_HAS_PREFETCH
1601 select CPU_NO_LOAD_STORE_LR
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HIGHMEM
1605 select CPU_SUPPORTS_HUGEPAGES
1606 select CPU_SUPPORTS_MSA
1607 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1610 Choose this option to build a kernel for release 6 or later of the
1611 MIPS64 architecture. New MIPS processors, starting with the Warrior
1612 family, are based on a MIPS64r6 processor. If you own an older
1613 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1616 bool "MIPS Warrior P5600"
1617 depends on SYS_HAS_CPU_P5600
1618 select CPU_HAS_PREFETCH
1619 select CPU_SUPPORTS_32BIT_KERNEL
1620 select CPU_SUPPORTS_HIGHMEM
1621 select CPU_SUPPORTS_MSA
1622 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1623 select CPU_SUPPORTS_CPUFREQ
1624 select CPU_MIPSR2_IRQ_VI
1625 select CPU_MIPSR2_IRQ_EI
1627 select MIPS_O32_FP64_SUPPORT
1629 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1630 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1631 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1632 level features like up to six P5600 calculation cores, CM2 with L2
1633 cache, IOCU/IOMMU (though might be unused depending on the system-
1634 specific IP core configuration), GIC, CPC, virtualisation module,
1639 depends on SYS_HAS_CPU_R3000
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_HIGHMEM
1645 Please make sure to pick the right CPU type. Linux/MIPS is not
1646 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1647 *not* work on R4000 machines and vice versa. However, since most
1648 of the supported machines have an R4000 (or similar) CPU, R4x00
1649 might be a safe bet. If the resulting kernel does not work,
1650 try to recompile with R3000.
1654 depends on SYS_HAS_CPU_TX39XX
1655 select CPU_SUPPORTS_32BIT_KERNEL
1660 depends on SYS_HAS_CPU_VR41XX
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_SUPPORTS_64BIT_KERNEL
1664 The options selects support for the NEC VR4100 series of processors.
1665 Only choose this option if you have one of these processors as a
1666 kernel built with this option will not run on any other type of
1667 processor or vice versa.
1671 depends on SYS_HAS_CPU_R4X00
1672 select CPU_SUPPORTS_32BIT_KERNEL
1673 select CPU_SUPPORTS_64BIT_KERNEL
1674 select CPU_SUPPORTS_HUGEPAGES
1676 MIPS Technologies R4000-series processors other than 4300, including
1677 the R4000, R4400, R4600, and 4700.
1681 depends on SYS_HAS_CPU_TX49XX
1682 select CPU_HAS_PREFETCH
1683 select CPU_SUPPORTS_32BIT_KERNEL
1684 select CPU_SUPPORTS_64BIT_KERNEL
1685 select CPU_SUPPORTS_HUGEPAGES
1689 depends on SYS_HAS_CPU_R5000
1690 select CPU_SUPPORTS_32BIT_KERNEL
1691 select CPU_SUPPORTS_64BIT_KERNEL
1692 select CPU_SUPPORTS_HUGEPAGES
1694 MIPS Technologies R5000-series processors other than the Nevada.
1698 depends on SYS_HAS_CPU_R5500
1699 select CPU_SUPPORTS_32BIT_KERNEL
1700 select CPU_SUPPORTS_64BIT_KERNEL
1701 select CPU_SUPPORTS_HUGEPAGES
1703 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1708 depends on SYS_HAS_CPU_NEVADA
1709 select CPU_SUPPORTS_32BIT_KERNEL
1710 select CPU_SUPPORTS_64BIT_KERNEL
1711 select CPU_SUPPORTS_HUGEPAGES
1713 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1717 depends on SYS_HAS_CPU_R10000
1718 select CPU_HAS_PREFETCH
1719 select CPU_SUPPORTS_32BIT_KERNEL
1720 select CPU_SUPPORTS_64BIT_KERNEL
1721 select CPU_SUPPORTS_HIGHMEM
1722 select CPU_SUPPORTS_HUGEPAGES
1724 MIPS Technologies R10000-series processors.
1728 depends on SYS_HAS_CPU_RM7000
1729 select CPU_HAS_PREFETCH
1730 select CPU_SUPPORTS_32BIT_KERNEL
1731 select CPU_SUPPORTS_64BIT_KERNEL
1732 select CPU_SUPPORTS_HIGHMEM
1733 select CPU_SUPPORTS_HUGEPAGES
1737 depends on SYS_HAS_CPU_SB1
1738 select CPU_SUPPORTS_32BIT_KERNEL
1739 select CPU_SUPPORTS_64BIT_KERNEL
1740 select CPU_SUPPORTS_HIGHMEM
1741 select CPU_SUPPORTS_HUGEPAGES
1742 select WEAK_ORDERING
1744 config CPU_CAVIUM_OCTEON
1745 bool "Cavium Octeon processor"
1746 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1747 select CPU_HAS_PREFETCH
1748 select CPU_SUPPORTS_64BIT_KERNEL
1749 select WEAK_ORDERING
1750 select CPU_SUPPORTS_HIGHMEM
1751 select CPU_SUPPORTS_HUGEPAGES
1752 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1753 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1754 select MIPS_L1_CACHE_SHIFT_7
1757 The Cavium Octeon processor is a highly integrated chip containing
1758 many ethernet hardware widgets for networking tasks. The processor
1759 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1760 Full details can be found at http://www.caviumnetworks.com.
1763 bool "Broadcom BMIPS"
1764 depends on SYS_HAS_CPU_BMIPS
1766 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1767 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1768 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1769 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1770 select CPU_SUPPORTS_32BIT_KERNEL
1771 select DMA_NONCOHERENT
1773 select SWAP_IO_SPACE
1774 select WEAK_ORDERING
1775 select CPU_SUPPORTS_HIGHMEM
1776 select CPU_HAS_PREFETCH
1777 select CPU_SUPPORTS_CPUFREQ
1778 select MIPS_EXTERNAL_TIMER
1780 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1783 bool "Netlogic XLR SoC"
1784 depends on SYS_HAS_CPU_XLR
1785 select CPU_SUPPORTS_32BIT_KERNEL
1786 select CPU_SUPPORTS_64BIT_KERNEL
1787 select CPU_SUPPORTS_HIGHMEM
1788 select CPU_SUPPORTS_HUGEPAGES
1789 select WEAK_ORDERING
1790 select WEAK_REORDERING_BEYOND_LLSC
1792 Netlogic Microsystems XLR/XLS processors.
1795 bool "Netlogic XLP SoC"
1796 depends on SYS_HAS_CPU_XLP
1797 select CPU_SUPPORTS_32BIT_KERNEL
1798 select CPU_SUPPORTS_64BIT_KERNEL
1799 select CPU_SUPPORTS_HIGHMEM
1800 select WEAK_ORDERING
1801 select WEAK_REORDERING_BEYOND_LLSC
1802 select CPU_HAS_PREFETCH
1804 select CPU_SUPPORTS_HUGEPAGES
1805 select MIPS_ASID_BITS_VARIABLE
1807 Netlogic Microsystems XLP processors.
1810 config CPU_MIPS32_3_5_FEATURES
1811 bool "MIPS32 Release 3.5 Features"
1812 depends on SYS_HAS_CPU_MIPS32_R3_5
1813 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1816 Choose this option to build a kernel for release 2 or later of the
1817 MIPS32 architecture including features from the 3.5 release such as
1818 support for Enhanced Virtual Addressing (EVA).
1820 config CPU_MIPS32_3_5_EVA
1821 bool "Enhanced Virtual Addressing (EVA)"
1822 depends on CPU_MIPS32_3_5_FEATURES
1826 Choose this option if you want to enable the Enhanced Virtual
1827 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1828 One of its primary benefits is an increase in the maximum size
1829 of lowmem (up to 3GB). If unsure, say 'N' here.
1831 config CPU_MIPS32_R5_FEATURES
1832 bool "MIPS32 Release 5 Features"
1833 depends on SYS_HAS_CPU_MIPS32_R5
1834 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1836 Choose this option to build a kernel for release 2 or later of the
1837 MIPS32 architecture including features from release 5 such as
1838 support for Extended Physical Addressing (XPA).
1840 config CPU_MIPS32_R5_XPA
1841 bool "Extended Physical Addressing (XPA)"
1842 depends on CPU_MIPS32_R5_FEATURES
1844 depends on !PAGE_SIZE_4KB
1845 depends on SYS_SUPPORTS_HIGHMEM
1848 select PHYS_ADDR_T_64BIT
1851 Choose this option if you want to enable the Extended Physical
1852 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1853 benefit is to increase physical addressing equal to or greater
1854 than 40 bits. Note that this has the side effect of turning on
1855 64-bit addressing which in turn makes the PTEs 64-bit in size.
1856 If unsure, say 'N' here.
1859 config CPU_NOP_WORKAROUNDS
1862 config CPU_JUMP_WORKAROUNDS
1865 config CPU_LOONGSON2F_WORKAROUNDS
1866 bool "Loongson 2F Workarounds"
1868 select CPU_NOP_WORKAROUNDS
1869 select CPU_JUMP_WORKAROUNDS
1871 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1872 require workarounds. Without workarounds the system may hang
1873 unexpectedly. For more information please refer to the gas
1874 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1876 Loongson 2F03 and later have fixed these issues and no workarounds
1877 are needed. The workarounds have no significant side effect on them
1878 but may decrease the performance of the system so this option should
1879 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1882 If unsure, please say Y.
1883 endif # CPU_LOONGSON2F
1885 config SYS_SUPPORTS_ZBOOT
1887 select HAVE_KERNEL_GZIP
1888 select HAVE_KERNEL_BZIP2
1889 select HAVE_KERNEL_LZ4
1890 select HAVE_KERNEL_LZMA
1891 select HAVE_KERNEL_LZO
1892 select HAVE_KERNEL_XZ
1894 config SYS_SUPPORTS_ZBOOT_UART16550
1896 select SYS_SUPPORTS_ZBOOT
1898 config SYS_SUPPORTS_ZBOOT_UART_PROM
1900 select SYS_SUPPORTS_ZBOOT
1902 config CPU_LOONGSON2EF
1904 select CPU_SUPPORTS_32BIT_KERNEL
1905 select CPU_SUPPORTS_64BIT_KERNEL
1906 select CPU_SUPPORTS_HIGHMEM
1907 select CPU_SUPPORTS_HUGEPAGES
1908 select ARCH_HAS_PHYS_TO_DMA
1910 config CPU_LOONGSON32
1914 select CPU_HAS_PREFETCH
1915 select CPU_SUPPORTS_32BIT_KERNEL
1916 select CPU_SUPPORTS_HIGHMEM
1917 select CPU_SUPPORTS_CPUFREQ
1919 config CPU_BMIPS32_3300
1920 select SMP_UP if SMP
1923 config CPU_BMIPS4350
1925 select SYS_SUPPORTS_SMP
1926 select SYS_SUPPORTS_HOTPLUG_CPU
1928 config CPU_BMIPS4380
1930 select MIPS_L1_CACHE_SHIFT_6
1931 select SYS_SUPPORTS_SMP
1932 select SYS_SUPPORTS_HOTPLUG_CPU
1935 config CPU_BMIPS5000
1937 select MIPS_CPU_SCACHE
1938 select MIPS_L1_CACHE_SHIFT_7
1939 select SYS_SUPPORTS_SMP
1940 select SYS_SUPPORTS_HOTPLUG_CPU
1943 config SYS_HAS_CPU_LOONGSON64
1945 select CPU_SUPPORTS_CPUFREQ
1948 config SYS_HAS_CPU_LOONGSON2E
1951 config SYS_HAS_CPU_LOONGSON2F
1953 select CPU_SUPPORTS_CPUFREQ
1954 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1956 config SYS_HAS_CPU_LOONGSON1B
1959 config SYS_HAS_CPU_LOONGSON1C
1962 config SYS_HAS_CPU_MIPS32_R1
1965 config SYS_HAS_CPU_MIPS32_R2
1968 config SYS_HAS_CPU_MIPS32_R3_5
1971 config SYS_HAS_CPU_MIPS32_R5
1973 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1975 config SYS_HAS_CPU_MIPS32_R6
1977 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1979 config SYS_HAS_CPU_MIPS64_R1
1982 config SYS_HAS_CPU_MIPS64_R2
1985 config SYS_HAS_CPU_MIPS64_R6
1987 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1989 config SYS_HAS_CPU_P5600
1991 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993 config SYS_HAS_CPU_R3000
1996 config SYS_HAS_CPU_TX39XX
1999 config SYS_HAS_CPU_VR41XX
2002 config SYS_HAS_CPU_R4X00
2005 config SYS_HAS_CPU_TX49XX
2008 config SYS_HAS_CPU_R5000
2011 config SYS_HAS_CPU_R5500
2014 config SYS_HAS_CPU_NEVADA
2017 config SYS_HAS_CPU_R10000
2019 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2021 config SYS_HAS_CPU_RM7000
2024 config SYS_HAS_CPU_SB1
2027 config SYS_HAS_CPU_CAVIUM_OCTEON
2030 config SYS_HAS_CPU_BMIPS
2033 config SYS_HAS_CPU_BMIPS32_3300
2035 select SYS_HAS_CPU_BMIPS
2037 config SYS_HAS_CPU_BMIPS4350
2039 select SYS_HAS_CPU_BMIPS
2041 config SYS_HAS_CPU_BMIPS4380
2043 select SYS_HAS_CPU_BMIPS
2045 config SYS_HAS_CPU_BMIPS5000
2047 select SYS_HAS_CPU_BMIPS
2048 select ARCH_HAS_SYNC_DMA_FOR_CPU
2050 config SYS_HAS_CPU_XLR
2053 config SYS_HAS_CPU_XLP
2057 # CPU may reorder R->R, R->W, W->R, W->W
2058 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2060 config WEAK_ORDERING
2064 # CPU may reorder reads and writes beyond LL/SC
2065 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2067 config WEAK_REORDERING_BEYOND_LLSC
2072 # These two indicate any level of the MIPS32 and MIPS64 architecture
2076 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2077 CPU_MIPS32_R6 || CPU_P5600
2081 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2085 # These indicate the revision of the architecture
2089 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2093 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2095 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2100 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2102 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2107 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2109 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2110 select HAVE_ARCH_BITREVERSE
2111 select MIPS_ASID_BITS_VARIABLE
2112 select MIPS_CRC_SUPPORT
2115 config TARGET_ISA_REV
2117 default 1 if CPU_MIPSR1
2118 default 2 if CPU_MIPSR2
2119 default 5 if CPU_MIPSR5
2120 default 6 if CPU_MIPSR6
2123 Reflects the ISA revision being targeted by the kernel build. This
2124 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2132 config SYS_SUPPORTS_32BIT_KERNEL
2134 config SYS_SUPPORTS_64BIT_KERNEL
2136 config CPU_SUPPORTS_32BIT_KERNEL
2138 config CPU_SUPPORTS_64BIT_KERNEL
2140 config CPU_SUPPORTS_CPUFREQ
2142 config CPU_SUPPORTS_ADDRWINCFG
2144 config CPU_SUPPORTS_HUGEPAGES
2146 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2147 config MIPS_PGD_C0_CONTEXT
2149 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2152 # Set to y for ptrace access to watch registers.
2154 config HARDWARE_WATCHPOINTS
2156 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2161 prompt "Kernel code model"
2163 You should only select this option if you have a workload that
2164 actually benefits from 64-bit processing or if your machine has
2165 large memory. You will only be presented a single option in this
2166 menu if your system does not support both 32-bit and 64-bit kernels.
2169 bool "32-bit kernel"
2170 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2173 Select this option if you want to build a 32-bit kernel.
2176 bool "64-bit kernel"
2177 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2179 Select this option if you want to build a 64-bit kernel.
2184 bool "KVM Guest Kernel"
2185 depends on CPU_MIPS32_R2
2186 depends on BROKEN_ON_SMP
2188 Select this option if building a guest kernel for KVM (Trap & Emulate)
2191 config KVM_GUEST_TIMER_FREQ
2192 int "Count/Compare Timer Frequency (MHz)"
2193 depends on KVM_GUEST
2196 Set this to non-zero if building a guest kernel for KVM to skip RTC
2197 emulation when determining guest CPU Frequency. Instead, the guest's
2198 timer frequency is specified directly.
2200 config MIPS_VA_BITS_48
2201 bool "48 bits virtual memory"
2204 Support a maximum at least 48 bits of application virtual
2205 memory. Default is 40 bits or less, depending on the CPU.
2206 For page sizes 16k and above, this option results in a small
2207 memory overhead for page tables. For 4k page size, a fourth
2208 level of page tables is added which imposes both a memory
2209 overhead as well as slower TLB fault handling.
2214 prompt "Kernel page size"
2215 default PAGE_SIZE_4KB
2217 config PAGE_SIZE_4KB
2219 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2221 This option select the standard 4kB Linux page size. On some
2222 R3000-family processors this is the only available page size. Using
2223 4kB page size will minimize memory consumption and is therefore
2224 recommended for low memory systems.
2226 config PAGE_SIZE_8KB
2228 depends on CPU_CAVIUM_OCTEON
2229 depends on !MIPS_VA_BITS_48
2231 Using 8kB page size will result in higher performance kernel at
2232 the price of higher memory consumption. This option is available
2233 only on cnMIPS processors. Note that you will need a suitable Linux
2234 distribution to support this.
2236 config PAGE_SIZE_16KB
2238 depends on !CPU_R3000 && !CPU_TX39XX
2240 Using 16kB page size will result in higher performance kernel at
2241 the price of higher memory consumption. This option is available on
2242 all non-R3000 family processors. Note that you will need a suitable
2243 Linux distribution to support this.
2245 config PAGE_SIZE_32KB
2247 depends on CPU_CAVIUM_OCTEON
2248 depends on !MIPS_VA_BITS_48
2250 Using 32kB page size will result in higher performance kernel at
2251 the price of higher memory consumption. This option is available
2252 only on cnMIPS cores. Note that you will need a suitable Linux
2253 distribution to support this.
2255 config PAGE_SIZE_64KB
2257 depends on !CPU_R3000 && !CPU_TX39XX
2259 Using 64kB page size will result in higher performance kernel at
2260 the price of higher memory consumption. This option is available on
2261 all non-R3000 family processor. Not that at the time of this
2262 writing this option is still high experimental.
2266 config FORCE_MAX_ZONEORDER
2267 int "Maximum zone order"
2268 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2269 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2270 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2271 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2272 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2273 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2277 The kernel memory allocator divides physically contiguous memory
2278 blocks into "zones", where each zone is a power of two number of
2279 pages. This option selects the largest power of two that the kernel
2280 keeps in the memory allocator. If you need to allocate very large
2281 blocks of physically contiguous memory, then you may need to
2282 increase this value.
2284 This config option is actually maximum order plus one. For example,
2285 a value of 11 means that the largest free memory block is 2^10 pages.
2287 The page size is not necessarily 4KB. Keep this in mind
2288 when choosing a value for this option.
2293 config IP22_CPU_SCACHE
2298 # Support for a MIPS32 / MIPS64 style S-caches
2300 config MIPS_CPU_SCACHE
2304 config R5000_CPU_SCACHE
2308 config RM7000_CPU_SCACHE
2312 config SIBYTE_DMA_PAGEOPS
2313 bool "Use DMA to clear/copy pages"
2316 Instead of using the CPU to zero and copy pages, use a Data Mover
2317 channel. These DMA channels are otherwise unused by the standard
2318 SiByte Linux port. Seems to give a small performance benefit.
2320 config CPU_HAS_PREFETCH
2323 config CPU_GENERIC_DUMP_TLB
2325 default y if !(CPU_R3000 || CPU_TX39XX)
2327 config MIPS_FP_SUPPORT
2328 bool "Floating Point support" if EXPERT
2331 Select y to include support for floating point in the kernel
2332 including initialization of FPU hardware, FP context save & restore
2333 and emulation of an FPU where necessary. Without this support any
2334 userland program attempting to use floating point instructions will
2337 If you know that your userland will not attempt to use floating point
2338 instructions then you can say n here to shrink the kernel a little.
2342 config CPU_R2300_FPU
2344 depends on MIPS_FP_SUPPORT
2345 default y if CPU_R3000 || CPU_TX39XX
2352 depends on MIPS_FP_SUPPORT
2353 default y if !CPU_R2300_FPU
2355 config CPU_R4K_CACHE_TLB
2357 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2360 bool "MIPS MT SMP support (1 TC on each available VPE)"
2362 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2363 select CPU_MIPSR2_IRQ_VI
2364 select CPU_MIPSR2_IRQ_EI
2369 select SYS_SUPPORTS_SMP
2370 select SYS_SUPPORTS_SCHED_SMT
2371 select MIPS_PERF_SHARED_TC_COUNTERS
2373 This is a kernel model which is known as SMVP. This is supported
2374 on cores with the MT ASE and uses the available VPEs to implement
2375 virtual processors which supports SMP. This is equivalent to the
2376 Intel Hyperthreading feature. For further information go to
2377 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2383 bool "SMT (multithreading) scheduler support"
2384 depends on SYS_SUPPORTS_SCHED_SMT
2387 SMT scheduler support improves the CPU scheduler's decision making
2388 when dealing with MIPS MT enabled cores at a cost of slightly
2389 increased overhead in some places. If unsure say N here.
2391 config SYS_SUPPORTS_SCHED_SMT
2394 config SYS_SUPPORTS_MULTITHREADING
2397 config MIPS_MT_FPAFF
2398 bool "Dynamic FPU affinity for FP-intensive threads"
2400 depends on MIPS_MT_SMP
2402 config MIPSR2_TO_R6_EMULATOR
2403 bool "MIPS R2-to-R6 emulator"
2404 depends on CPU_MIPSR6
2405 depends on MIPS_FP_SUPPORT
2408 Choose this option if you want to run non-R6 MIPS userland code.
2409 Even if you say 'Y' here, the emulator will still be disabled by
2410 default. You can enable it using the 'mipsr2emu' kernel option.
2411 The only reason this is a build-time option is to save ~14K from the
2414 config SYS_SUPPORTS_VPE_LOADER
2416 depends on SYS_SUPPORTS_MULTITHREADING
2418 Indicates that the platform supports the VPE loader, and provides
2421 config MIPS_VPE_LOADER
2422 bool "VPE loader support."
2423 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2424 select CPU_MIPSR2_IRQ_VI
2425 select CPU_MIPSR2_IRQ_EI
2428 Includes a loader for loading an elf relocatable object
2429 onto another VPE and running it.
2431 config MIPS_VPE_LOADER_CMP
2434 depends on MIPS_VPE_LOADER && MIPS_CMP
2436 config MIPS_VPE_LOADER_MT
2439 depends on MIPS_VPE_LOADER && !MIPS_CMP
2441 config MIPS_VPE_LOADER_TOM
2442 bool "Load VPE program into memory hidden from linux"
2443 depends on MIPS_VPE_LOADER
2446 The loader can use memory that is present but has been hidden from
2447 Linux using the kernel command line option "mem=xxMB". It's up to
2448 you to ensure the amount you put in the option and the space your
2449 program requires is less or equal to the amount physically present.
2451 config MIPS_VPE_APSP_API
2452 bool "Enable support for AP/SP API (RTLX)"
2453 depends on MIPS_VPE_LOADER
2455 config MIPS_VPE_APSP_API_CMP
2458 depends on MIPS_VPE_APSP_API && MIPS_CMP
2460 config MIPS_VPE_APSP_API_MT
2463 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2466 bool "MIPS CMP framework support (DEPRECATED)"
2467 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2470 select SYS_SUPPORTS_SMP
2471 select WEAK_ORDERING
2474 Select this if you are using a bootloader which implements the "CMP
2475 framework" protocol (ie. YAMON) and want your kernel to make use of
2476 its ability to start secondary CPUs.
2478 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2482 bool "MIPS Coherent Processing System support"
2483 depends on SYS_SUPPORTS_MIPS_CPS
2485 select MIPS_CPS_PM if HOTPLUG_CPU
2487 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2488 select SYS_SUPPORTS_HOTPLUG_CPU
2489 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2490 select SYS_SUPPORTS_SMP
2491 select WEAK_ORDERING
2493 Select this if you wish to run an SMP kernel across multiple cores
2494 within a MIPS Coherent Processing System. When this option is
2495 enabled the kernel will probe for other cores and boot them with
2496 no external assistance. It is safe to enable this when hardware
2497 support is unavailable.
2510 config SB1_PASS_2_WORKAROUNDS
2512 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2515 config SB1_PASS_2_1_WORKAROUNDS
2517 depends on CPU_SB1 && CPU_SB1_PASS_2
2521 prompt "SmartMIPS or microMIPS ASE support"
2523 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2526 Select this if you want neither microMIPS nor SmartMIPS support
2528 config CPU_HAS_SMARTMIPS
2529 depends on SYS_SUPPORTS_SMARTMIPS
2532 SmartMIPS is a extension of the MIPS32 architecture aimed at
2533 increased security at both hardware and software level for
2534 smartcards. Enabling this option will allow proper use of the
2535 SmartMIPS instructions by Linux applications. However a kernel with
2536 this option will not work on a MIPS core without SmartMIPS core. If
2537 you don't know you probably don't have SmartMIPS and should say N
2540 config CPU_MICROMIPS
2541 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2544 When this option is enabled the kernel will be built using the
2550 bool "Support for the MIPS SIMD Architecture"
2551 depends on CPU_SUPPORTS_MSA
2552 depends on MIPS_FP_SUPPORT
2553 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2555 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2556 and a set of SIMD instructions to operate on them. When this option
2557 is enabled the kernel will support allocating & switching MSA
2558 vector register contexts. If you know that your kernel will only be
2559 running on CPUs which do not support MSA or that your userland will
2560 not be making use of it then you may wish to say N here to reduce
2561 the size & complexity of your kernel.
2572 depends on !CPU_DIEI_BROKEN
2575 config CPU_DIEI_BROKEN
2581 config CPU_NO_LOAD_STORE_LR
2584 CPU lacks support for unaligned load and store instructions:
2585 LWL, LWR, SWL, SWR (Load/store word left/right).
2586 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2590 # Vectored interrupt mode is an R2 feature
2592 config CPU_MIPSR2_IRQ_VI
2596 # Extended interrupt mode is an R2 feature
2598 config CPU_MIPSR2_IRQ_EI
2603 depends on !CPU_R3000
2609 config CPU_DADDI_WORKAROUNDS
2612 config CPU_R4000_WORKAROUNDS
2614 select CPU_R4400_WORKAROUNDS
2616 config CPU_R4400_WORKAROUNDS
2619 config CPU_R4X00_BUGS64
2621 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2623 config MIPS_ASID_SHIFT
2625 default 6 if CPU_R3000 || CPU_TX39XX
2628 config MIPS_ASID_BITS
2630 default 0 if MIPS_ASID_BITS_VARIABLE
2631 default 6 if CPU_R3000 || CPU_TX39XX
2634 config MIPS_ASID_BITS_VARIABLE
2637 config MIPS_CRC_SUPPORT
2641 # - Highmem only makes sense for the 32-bit kernel.
2642 # - The current highmem code will only work properly on physically indexed
2643 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2644 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2645 # moment we protect the user and offer the highmem option only on machines
2646 # where it's known to be safe. This will not offer highmem on a few systems
2647 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2648 # indexed CPUs but we're playing safe.
2649 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2650 # know they might have memory configurations that could make use of highmem
2654 bool "High Memory Support"
2655 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2657 config CPU_SUPPORTS_HIGHMEM
2660 config SYS_SUPPORTS_HIGHMEM
2663 config SYS_SUPPORTS_SMARTMIPS
2666 config SYS_SUPPORTS_MICROMIPS
2669 config SYS_SUPPORTS_MIPS16
2672 This option must be set if a kernel might be executed on a MIPS16-
2673 enabled CPU even if MIPS16 is not actually being used. In other
2674 words, it makes the kernel MIPS16-tolerant.
2676 config CPU_SUPPORTS_MSA
2679 config ARCH_FLATMEM_ENABLE
2681 depends on !NUMA && !CPU_LOONGSON2EF
2683 config ARCH_SPARSEMEM_ENABLE
2685 select SPARSEMEM_STATIC if !SGI_IP27
2689 depends on SYS_SUPPORTS_NUMA
2691 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2692 Access). This option improves performance on systems with more
2693 than two nodes; on two node systems it is generally better to
2694 leave it disabled; on single node systems leave this option
2697 config SYS_SUPPORTS_NUMA
2700 config HAVE_SETUP_PER_CPU_AREA
2704 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2709 bool "Relocatable kernel"
2710 depends on SYS_SUPPORTS_RELOCATABLE
2711 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2712 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2713 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2714 CPU_P5600 || CAVIUM_OCTEON_SOC
2716 This builds a kernel image that retains relocation information
2717 so it can be loaded someplace besides the default 1MB.
2718 The relocations make the kernel binary about 15% larger,
2719 but are discarded at runtime
2721 config RELOCATION_TABLE_SIZE
2722 hex "Relocation table size"
2723 depends on RELOCATABLE
2724 range 0x0 0x01000000
2725 default "0x00100000"
2727 A table of relocation data will be appended to the kernel binary
2728 and parsed at boot to fix up the relocated kernel.
2730 This option allows the amount of space reserved for the table to be
2731 adjusted, although the default of 1Mb should be ok in most cases.
2733 The build will fail and a valid size suggested if this is too small.
2735 If unsure, leave at the default value.
2737 config RANDOMIZE_BASE
2738 bool "Randomize the address of the kernel image"
2739 depends on RELOCATABLE
2741 Randomizes the physical and virtual address at which the
2742 kernel image is loaded, as a security feature that
2743 deters exploit attempts relying on knowledge of the location
2744 of kernel internals.
2746 Entropy is generated using any coprocessor 0 registers available.
2748 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2752 config RANDOMIZE_BASE_MAX_OFFSET
2753 hex "Maximum kASLR offset" if EXPERT
2754 depends on RANDOMIZE_BASE
2755 range 0x0 0x40000000 if EVA || 64BIT
2756 range 0x0 0x08000000
2757 default "0x01000000"
2759 When kASLR is active, this provides the maximum offset that will
2760 be applied to the kernel image. It should be set according to the
2761 amount of physical RAM available in the target system minus
2762 PHYSICAL_START and must be a power of 2.
2764 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2765 EVA or 64-bit. The default is 16Mb.
2770 depends on NEED_MULTIPLE_NODES
2772 config HW_PERF_EVENTS
2773 bool "Enable hardware performance counter support for perf events"
2774 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2777 Enable hardware performance counter support for perf events. If
2778 disabled, perf events will use software events only.
2781 bool "Enable DMI scanning"
2782 depends on MACH_LOONGSON64
2783 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2786 Enabled scanning of DMI to identify machine quirks. Say Y
2787 here unless you have verified that your setup is not
2788 affected by entries in the DMI blacklist. Required by PNP
2792 bool "Multi-Processing support"
2793 depends on SYS_SUPPORTS_SMP
2795 This enables support for systems with more than one CPU. If you have
2796 a system with only one CPU, say N. If you have a system with more
2797 than one CPU, say Y.
2799 If you say N here, the kernel will run on uni- and multiprocessor
2800 machines, but will use only one CPU of a multiprocessor machine. If
2801 you say Y here, the kernel will run on many, but not all,
2802 uniprocessor machines. On a uniprocessor machine, the kernel
2803 will run faster if you say N here.
2805 People using multiprocessor machines who say Y here should also say
2806 Y to "Enhanced Real Time Clock Support", below.
2808 See also the SMP-HOWTO available at
2809 <https://www.tldp.org/docs.html#howto>.
2811 If you don't know what to do here, say N.
2814 bool "Support for hot-pluggable CPUs"
2815 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2817 Say Y here to allow turning CPUs off and on. CPUs can be
2818 controlled through /sys/devices/system/cpu.
2819 (Note: power management support will enable this option
2820 automatically on SMP systems. )
2821 Say N if you want to disable CPU hotplug.
2826 config SYS_SUPPORTS_MIPS_CMP
2829 config SYS_SUPPORTS_MIPS_CPS
2832 config SYS_SUPPORTS_SMP
2835 config NR_CPUS_DEFAULT_4
2838 config NR_CPUS_DEFAULT_8
2841 config NR_CPUS_DEFAULT_16
2844 config NR_CPUS_DEFAULT_32
2847 config NR_CPUS_DEFAULT_64
2851 int "Maximum number of CPUs (2-256)"
2854 default "4" if NR_CPUS_DEFAULT_4
2855 default "8" if NR_CPUS_DEFAULT_8
2856 default "16" if NR_CPUS_DEFAULT_16
2857 default "32" if NR_CPUS_DEFAULT_32
2858 default "64" if NR_CPUS_DEFAULT_64
2860 This allows you to specify the maximum number of CPUs which this
2861 kernel will support. The maximum supported value is 32 for 32-bit
2862 kernel and 64 for 64-bit kernels; the minimum value which makes
2863 sense is 1 for Qemu (useful only for kernel debugging purposes)
2864 and 2 for all others.
2866 This is purely to save memory - each supported CPU adds
2867 approximately eight kilobytes to the kernel image. For best
2868 performance should round up your number of processors to the next
2871 config MIPS_PERF_SHARED_TC_COUNTERS
2874 config MIPS_NR_CPU_NR_MAP_1024
2877 config MIPS_NR_CPU_NR_MAP
2880 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2881 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2884 # Timer Interrupt Frequency Configuration
2888 prompt "Timer frequency"
2891 Allows the configuration of the timer frequency.
2894 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2897 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2900 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2903 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2906 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2909 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2912 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2915 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2919 config SYS_SUPPORTS_24HZ
2922 config SYS_SUPPORTS_48HZ
2925 config SYS_SUPPORTS_100HZ
2928 config SYS_SUPPORTS_128HZ
2931 config SYS_SUPPORTS_250HZ
2934 config SYS_SUPPORTS_256HZ
2937 config SYS_SUPPORTS_1000HZ
2940 config SYS_SUPPORTS_1024HZ
2943 config SYS_SUPPORTS_ARBIT_HZ
2945 default y if !SYS_SUPPORTS_24HZ && \
2946 !SYS_SUPPORTS_48HZ && \
2947 !SYS_SUPPORTS_100HZ && \
2948 !SYS_SUPPORTS_128HZ && \
2949 !SYS_SUPPORTS_250HZ && \
2950 !SYS_SUPPORTS_256HZ && \
2951 !SYS_SUPPORTS_1000HZ && \
2952 !SYS_SUPPORTS_1024HZ
2958 default 100 if HZ_100
2959 default 128 if HZ_128
2960 default 250 if HZ_250
2961 default 256 if HZ_256
2962 default 1000 if HZ_1000
2963 default 1024 if HZ_1024
2966 def_bool HIGH_RES_TIMERS
2969 bool "Kexec system call"
2972 kexec is a system call that implements the ability to shutdown your
2973 current kernel, and to start another kernel. It is like a reboot
2974 but it is independent of the system firmware. And like a reboot
2975 you can start any kernel with it, not just Linux.
2977 The name comes from the similarity to the exec system call.
2979 It is an ongoing process to be certain the hardware in a machine
2980 is properly shutdown, so do not be surprised if this code does not
2981 initially work for you. As of this writing the exact hardware
2982 interface is strongly in flux, so no good recommendation can be
2986 bool "Kernel crash dumps"
2988 Generate crash dump after being started by kexec.
2989 This should be normally only set in special crash dump kernels
2990 which are loaded in the main kernel with kexec-tools into
2991 a specially reserved region and then later executed after
2992 a crash by kdump/kexec. The crash dump kernel must be compiled
2993 to a memory address not used by the main kernel or firmware using
2996 config PHYSICAL_START
2997 hex "Physical address where the kernel is loaded"
2998 default "0xffffffff84000000"
2999 depends on CRASH_DUMP
3001 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3002 If you plan to use kernel for capturing the crash dump change
3003 this value to start of the reserved region (the "X" value as
3004 specified in the "crashkernel=YM@XM" command line boot parameter
3005 passed to the panic-ed kernel).
3008 bool "Enable seccomp to safely compute untrusted bytecode"
3012 This kernel feature is useful for number crunching applications
3013 that may need to compute untrusted bytecode during their
3014 execution. By using pipes or other transports made available to
3015 the process as file descriptors supporting the read/write
3016 syscalls, it's possible to isolate those applications in
3017 their own address space using seccomp. Once seccomp is
3018 enabled via /proc/<pid>/seccomp, it cannot be disabled
3019 and the task is only allowed to execute a few safe syscalls
3020 defined by each seccomp mode.
3022 If unsure, say Y. Only embedded should say N here.
3024 config MIPS_O32_FP64_SUPPORT
3025 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3026 depends on 32BIT || MIPS32_O32
3028 When this is enabled, the kernel will support use of 64-bit floating
3029 point registers with binaries using the O32 ABI along with the
3030 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3031 32-bit MIPS systems this support is at the cost of increasing the
3032 size and complexity of the compiled FPU emulator. Thus if you are
3033 running a MIPS32 system and know that none of your userland binaries
3034 will require 64-bit floating point, you may wish to reduce the size
3035 of your kernel & potentially improve FP emulation performance by
3038 Although binutils currently supports use of this flag the details
3039 concerning its effect upon the O32 ABI in userland are still being
3040 worked on. In order to avoid userland becoming dependant upon current
3041 behaviour before the details have been finalised, this option should
3042 be considered experimental and only enabled by those working upon
3050 select OF_EARLY_FLATTREE
3060 prompt "Kernel appended dtb support" if USE_OF
3061 default MIPS_NO_APPENDED_DTB
3063 config MIPS_NO_APPENDED_DTB
3066 Do not enable appended dtb support.
3068 config MIPS_ELF_APPENDED_DTB
3071 With this option, the boot code will look for a device tree binary
3072 DTB) included in the vmlinux ELF section .appended_dtb. By default
3073 it is empty and the DTB can be appended using binutils command
3076 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3078 This is meant as a backward compatiblity convenience for those
3079 systems with a bootloader that can't be upgraded to accommodate
3080 the documented boot protocol using a device tree.
3082 config MIPS_RAW_APPENDED_DTB
3083 bool "vmlinux.bin or vmlinuz.bin"
3085 With this option, the boot code will look for a device tree binary
3086 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3087 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3089 This is meant as a backward compatibility convenience for those
3090 systems with a bootloader that can't be upgraded to accommodate
3091 the documented boot protocol using a device tree.
3093 Beware that there is very little in terms of protection against
3094 this option being confused by leftover garbage in memory that might
3095 look like a DTB header after a reboot if no actual DTB is appended
3096 to vmlinux.bin. Do not leave this option active in a production kernel
3097 if you don't intend to always append a DTB.
3101 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3102 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3103 !MACH_LOONGSON64 && !MIPS_MALTA && \
3105 default MIPS_CMDLINE_FROM_BOOTLOADER
3107 config MIPS_CMDLINE_FROM_DTB
3109 bool "Dtb kernel arguments if available"
3111 config MIPS_CMDLINE_DTB_EXTEND
3113 bool "Extend dtb kernel arguments with bootloader arguments"
3115 config MIPS_CMDLINE_FROM_BOOTLOADER
3116 bool "Bootloader kernel arguments if available"
3118 config MIPS_CMDLINE_BUILTIN_EXTEND
3119 depends on CMDLINE_BOOL
3120 bool "Extend builtin kernel arguments with bootloader arguments"
3125 config LOCKDEP_SUPPORT
3129 config STACKTRACE_SUPPORT
3133 config PGTABLE_LEVELS
3135 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3136 default 3 if 64BIT && !PAGE_SIZE_64KB
3139 config MIPS_AUTO_PFN_OFFSET
3142 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3144 config PCI_DRIVERS_GENERIC
3145 select PCI_DOMAINS_GENERIC if PCI
3148 config PCI_DRIVERS_LEGACY
3149 def_bool !PCI_DRIVERS_GENERIC
3150 select NO_GENERIC_PCI_IOPORT_MAP
3151 select PCI_DOMAINS if PCI
3154 # ISA support is now enabled via select. Too many systems still have the one
3155 # or other ISA chip on the board that users don't know about so don't expect
3156 # users to choose the right thing ...
3162 bool "TURBOchannel support"
3163 depends on MACH_DECSTATION
3165 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3166 processors. TURBOchannel programming specifications are available
3168 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3170 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3171 Linux driver support status is documented at:
3172 <http://www.linux-mips.org/wiki/DECstation>
3178 config ARCH_MMAP_RND_BITS_MIN
3182 config ARCH_MMAP_RND_BITS_MAX
3186 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3189 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3196 select MIPS_EXTERNAL_TIMER
3209 config MIPS32_COMPAT
3215 config SYSVIPC_COMPAT
3219 bool "Kernel support for o32 binaries"
3221 select ARCH_WANT_OLD_COMPAT_IPC
3223 select MIPS32_COMPAT
3224 select SYSVIPC_COMPAT if SYSVIPC
3226 Select this option if you want to run o32 binaries. These are pure
3227 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3228 existing binaries are in this format.
3233 bool "Kernel support for n32 binaries"
3235 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3237 select MIPS32_COMPAT
3238 select SYSVIPC_COMPAT if SYSVIPC
3240 Select this option if you want to run n32 binaries. These are
3241 64-bit binaries using 32-bit quantities for addressing and certain
3242 data that would normally be 64-bit. They are used in special
3249 default y if MIPS32_O32 || MIPS32_N32
3252 menu "Power management options"
3254 config ARCH_HIBERNATION_POSSIBLE
3256 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3258 config ARCH_SUSPEND_POSSIBLE
3260 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3262 source "kernel/power/Kconfig"
3266 config MIPS_EXTERNAL_TIMER
3269 menu "CPU Power Management"
3271 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3272 source "drivers/cpufreq/Kconfig"
3275 source "drivers/cpuidle/Kconfig"
3279 source "drivers/firmware/Kconfig"
3281 source "arch/mips/kvm/Kconfig"
3283 source "arch/mips/vdso/Kconfig"