1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_CLOCKSOURCE_DATA
8 select ARCH_HAS_FORTIFY_SOURCE
10 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
11 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
12 select ARCH_HAS_UBSAN_SANITIZE_ALL
13 select ARCH_SUPPORTS_UPROBES
14 select ARCH_USE_BUILTIN_BSWAP
15 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
16 select ARCH_USE_QUEUED_RWLOCKS
17 select ARCH_USE_QUEUED_SPINLOCKS
18 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
19 select ARCH_WANT_IPC_PARSE_VERSION
20 select BUILDTIME_TABLE_SORT
21 select CLONE_BACKWARDS
22 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
23 select CPU_PM if CPU_IDLE
24 select GENERIC_ATOMIC64 if !64BIT
25 select GENERIC_CLOCKEVENTS
26 select GENERIC_CMOS_UPDATE
27 select GENERIC_CPU_AUTOPROBE
28 select GENERIC_GETTIMEOFDAY
30 select GENERIC_IRQ_PROBE
31 select GENERIC_IRQ_SHOW
32 select GENERIC_ISA_DMA if EISA
33 select GENERIC_LIB_ASHLDI3
34 select GENERIC_LIB_ASHRDI3
35 select GENERIC_LIB_CMPDI2
36 select GENERIC_LIB_LSHRDI3
37 select GENERIC_LIB_UCMPDI2
38 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
39 select GENERIC_SMP_IDLE_THREAD
40 select GENERIC_TIME_VSYSCALL
41 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
42 select HANDLE_DOMAIN_IRQ
43 select HAVE_ARCH_COMPILER_H
44 select HAVE_ARCH_JUMP_LABEL
46 select HAVE_ARCH_MMAP_RND_BITS if MMU
47 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
48 select HAVE_ARCH_SECCOMP_FILTER
49 select HAVE_ARCH_TRACEHOOK
50 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
51 select HAVE_ASM_MODVERSIONS
52 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
53 select HAVE_CONTEXT_TRACKING
54 select HAVE_COPY_THREAD_TLS
55 select HAVE_C_RECORDMCOUNT
56 select HAVE_DEBUG_KMEMLEAK
57 select HAVE_DEBUG_STACKOVERFLOW
58 select HAVE_DMA_CONTIGUOUS
59 select HAVE_DYNAMIC_FTRACE
60 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
61 select HAVE_EXIT_THREAD
63 select HAVE_FTRACE_MCOUNT_RECORD
64 select HAVE_FUNCTION_GRAPH_TRACER
65 select HAVE_FUNCTION_TRACER
66 select HAVE_GCC_PLUGINS
67 select HAVE_GENERIC_VDSO
69 select HAVE_IOREMAP_PROT
70 select HAVE_IRQ_EXIT_ON_IRQ_STACK
71 select HAVE_IRQ_TIME_ACCOUNTING
73 select HAVE_KRETPROBES
74 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
75 select HAVE_MEMBLOCK_NODE_MAP
76 select HAVE_MOD_ARCH_SPECIFIC
79 select HAVE_PERF_EVENTS
80 select HAVE_REGS_AND_STACK_ACCESS_API
82 select HAVE_SPARSE_SYSCALL_NR
83 select HAVE_STACKPROTECTOR
84 select HAVE_SYSCALL_TRACEPOINTS
85 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
86 select IRQ_FORCED_THREADING
88 select MODULES_USE_ELF_REL if MODULES
89 select MODULES_USE_ELF_RELA if MODULES && 64BIT
90 select PERF_USE_VMALLOC
92 select SYSCTL_EXCEPTION_TRACE
95 menu "Machine selection"
102 bool "Generic board-agnostic MIPS kernel"
106 select CLKSRC_MIPS_GIC
108 select CPU_MIPSR2_IRQ_EI
109 select CPU_MIPSR2_IRQ_VI
111 select DMA_PERDEV_COHERENT
114 select MIPS_AUTO_PFN_OFFSET
115 select MIPS_CPU_SCACHE
117 select MIPS_L1_CACHE_SHIFT_7
118 select NO_EXCEPT_FILL
119 select PCI_DRIVERS_GENERIC
122 select SYS_HAS_CPU_MIPS32_R1
123 select SYS_HAS_CPU_MIPS32_R2
124 select SYS_HAS_CPU_MIPS32_R6
125 select SYS_HAS_CPU_MIPS64_R1
126 select SYS_HAS_CPU_MIPS64_R2
127 select SYS_HAS_CPU_MIPS64_R6
128 select SYS_SUPPORTS_32BIT_KERNEL
129 select SYS_SUPPORTS_64BIT_KERNEL
130 select SYS_SUPPORTS_BIG_ENDIAN
131 select SYS_SUPPORTS_HIGHMEM
132 select SYS_SUPPORTS_LITTLE_ENDIAN
133 select SYS_SUPPORTS_MICROMIPS
134 select SYS_SUPPORTS_MIPS16
135 select SYS_SUPPORTS_MIPS_CPS
136 select SYS_SUPPORTS_MULTITHREADING
137 select SYS_SUPPORTS_RELOCATABLE
138 select SYS_SUPPORTS_SMARTMIPS
140 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
141 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
142 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
143 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
144 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
145 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
148 Select this to build a kernel which aims to support multiple boards,
149 generally using a flattened device tree passed from the bootloader
150 using the boot protocol defined in the UHI (Unified Hosting
151 Interface) specification.
154 bool "Alchemy processor based machines"
155 select PHYS_ADDR_T_64BIT
159 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
160 select SYS_HAS_CPU_MIPS32_R1
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_APM_EMULATION
164 select SYS_SUPPORTS_ZBOOT
168 bool "Texas Instruments AR7"
170 select DMA_NONCOHERENT
174 select NO_EXCEPT_FILL
176 select SYS_HAS_CPU_MIPS32_R1
177 select SYS_HAS_EARLY_PRINTK
178 select SYS_SUPPORTS_32BIT_KERNEL
179 select SYS_SUPPORTS_LITTLE_ENDIAN
180 select SYS_SUPPORTS_MIPS16
181 select SYS_SUPPORTS_ZBOOT_UART16550
186 Support for the Texas Instruments AR7 System-on-a-Chip
187 family: TNETD7100, 7200 and 7300.
190 bool "Atheros AR231x/AR531x SoC support"
193 select DMA_NONCOHERENT
196 select SYS_HAS_CPU_MIPS32_R1
197 select SYS_SUPPORTS_BIG_ENDIAN
198 select SYS_SUPPORTS_32BIT_KERNEL
199 select SYS_HAS_EARLY_PRINTK
201 Support for Atheros AR231x and Atheros AR531x based boards
204 bool "Atheros AR71XX/AR724X/AR913X based boards"
205 select ARCH_HAS_RESET_CONTROLLER
209 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
302 select MIPS_L1_CACHE_SHIFT_4
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
371 select ARCH_MAY_HAVE_PC_FDC
374 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
375 select GENERIC_ISA_DMA
376 select HAVE_PCSPKR_PLATFORM
381 select SYS_HAS_CPU_R4X00
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_64BIT_KERNEL
384 select SYS_SUPPORTS_100HZ
386 This a family of machines based on the MIPS R4030 chipset which was
387 used by several vendors to build RISC/os and Windows NT workstations.
388 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
389 Olivetti M700-10 workstations.
392 bool "Ingenic SoC based machines"
393 select SYS_SUPPORTS_32BIT_KERNEL
394 select SYS_SUPPORTS_LITTLE_ENDIAN
395 select SYS_SUPPORTS_ZBOOT_UART16550
396 select CPU_SUPPORTS_HUGEPAGES
397 select DMA_NONCOHERENT
402 select GENERIC_IRQ_CHIP
403 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
407 bool "Lantiq based platforms"
408 select DMA_NONCOHERENT
412 select SYS_HAS_CPU_MIPS32_R1
413 select SYS_HAS_CPU_MIPS32_R2
414 select SYS_SUPPORTS_BIG_ENDIAN
415 select SYS_SUPPORTS_32BIT_KERNEL
416 select SYS_SUPPORTS_MIPS16
417 select SYS_SUPPORTS_MULTITHREADING
418 select SYS_SUPPORTS_VPE_LOADER
419 select SYS_HAS_EARLY_PRINTK
426 select PINCTRL_LANTIQ
427 select ARCH_HAS_RESET_CONTROLLER
428 select RESET_CONTROLLER
431 bool "LASAT Networks platforms"
435 select DMA_NONCOHERENT
436 select SYS_HAS_EARLY_PRINTK
439 select PCI_GT64XXX_PCI0
441 select R5000_CPU_SCACHE
442 select SYS_HAS_CPU_R5000
443 select SYS_SUPPORTS_32BIT_KERNEL
444 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
445 select SYS_SUPPORTS_LITTLE_ENDIAN
447 config MACH_LOONGSON32
448 bool "Loongson 32-bit family of machines"
449 select SYS_SUPPORTS_ZBOOT
451 This enables support for the Loongson-1 family of machines.
453 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
454 the Institute of Computing Technology (ICT), Chinese Academy of
457 config MACH_LOONGSON2EF
458 bool "Loongson-2E/F family of machines"
459 select SYS_SUPPORTS_ZBOOT
461 This enables the support of early Loongson-2E/F family of machines.
463 config MACH_LOONGSON64
464 bool "Loongson 64-bit family of machines"
465 select ARCH_SPARSEMEM_ENABLE
466 select ARCH_MIGHT_HAVE_PC_PARPORT
467 select ARCH_MIGHT_HAVE_PC_SERIO
468 select GENERIC_ISA_DMA_SUPPORT_BROKEN
478 select NR_CPUS_DEFAULT_4
479 select USE_GENERIC_EARLY_PRINTK_8250
480 select SYS_HAS_CPU_LOONGSON64
481 select SYS_HAS_EARLY_PRINTK
482 select SYS_SUPPORTS_SMP
483 select SYS_SUPPORTS_HOTPLUG_CPU
484 select SYS_SUPPORTS_NUMA
485 select SYS_SUPPORTS_64BIT_KERNEL
486 select SYS_SUPPORTS_HIGHMEM
487 select SYS_SUPPORTS_LITTLE_ENDIAN
488 select SYS_SUPPORTS_ZBOOT
489 select LOONGSON_MC146818
493 This enables the support of Loongson-2/3 family of machines.
495 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
496 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
497 and Loongson-2F which will be removed), developed by the Institute
498 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
500 config MACH_PISTACHIO
501 bool "IMG Pistachio SoC based boards"
505 select CLKSRC_MIPS_GIC
508 select DMA_NONCOHERENT
512 select MIPS_CPU_SCACHE
516 select SYS_HAS_CPU_MIPS32_R2
517 select SYS_SUPPORTS_32BIT_KERNEL
518 select SYS_SUPPORTS_LITTLE_ENDIAN
519 select SYS_SUPPORTS_MIPS_CPS
520 select SYS_SUPPORTS_MULTITHREADING
521 select SYS_SUPPORTS_RELOCATABLE
522 select SYS_SUPPORTS_ZBOOT
523 select SYS_HAS_EARLY_PRINTK
524 select USE_GENERIC_EARLY_PRINTK_8250
527 This enables support for the IMG Pistachio SoC platform.
530 bool "MIPS Malta board"
531 select ARCH_MAY_HAVE_PC_FDC
532 select ARCH_MIGHT_HAVE_PC_PARPORT
533 select ARCH_MIGHT_HAVE_PC_SERIO
538 select CLKSRC_MIPS_GIC
541 select DMA_MAYBE_COHERENT
542 select GENERIC_ISA_DMA
543 select HAVE_PCSPKR_PLATFORM
549 select MIPS_CPU_SCACHE
551 select MIPS_L1_CACHE_SHIFT_6
553 select PCI_GT64XXX_PCI0
556 select SYS_HAS_CPU_MIPS32_R1
557 select SYS_HAS_CPU_MIPS32_R2
558 select SYS_HAS_CPU_MIPS32_R3_5
559 select SYS_HAS_CPU_MIPS32_R5
560 select SYS_HAS_CPU_MIPS32_R6
561 select SYS_HAS_CPU_MIPS64_R1
562 select SYS_HAS_CPU_MIPS64_R2
563 select SYS_HAS_CPU_MIPS64_R6
564 select SYS_HAS_CPU_NEVADA
565 select SYS_HAS_CPU_RM7000
566 select SYS_SUPPORTS_32BIT_KERNEL
567 select SYS_SUPPORTS_64BIT_KERNEL
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_HIGHMEM
570 select SYS_SUPPORTS_LITTLE_ENDIAN
571 select SYS_SUPPORTS_MICROMIPS
572 select SYS_SUPPORTS_MIPS16
573 select SYS_SUPPORTS_MIPS_CMP
574 select SYS_SUPPORTS_MIPS_CPS
575 select SYS_SUPPORTS_MULTITHREADING
576 select SYS_SUPPORTS_RELOCATABLE
577 select SYS_SUPPORTS_SMARTMIPS
578 select SYS_SUPPORTS_VPE_LOADER
579 select SYS_SUPPORTS_ZBOOT
581 select ZONE_DMA32 if 64BIT
583 This enables support for the MIPS Technologies Malta evaluation
587 bool "Microchip PIC32 Family"
589 This enables support for the Microchip PIC32 family of platforms.
591 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
595 bool "NEC EMMA2RH Mark-eins board"
599 This enables support for the NEC Electronics Mark-eins boards.
602 bool "NEC VR4100 series based machines"
605 select SYS_HAS_CPU_VR41XX
606 select SYS_SUPPORTS_MIPS16
610 bool "NXP STB220 board"
613 Support for NXP Semiconductors STB220 Development Board.
620 Support for NXP Semiconductors STB225 Development Board.
623 bool "PMC-Sierra MSP chipsets"
626 select DMA_NONCOHERENT
628 select NO_EXCEPT_FILL
630 select SYS_HAS_CPU_MIPS32_R1
631 select SYS_HAS_CPU_MIPS32_R2
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_BIG_ENDIAN
634 select SYS_SUPPORTS_MIPS16
637 select SERIAL_8250_CONSOLE
638 select USB_EHCI_BIG_ENDIAN_MMIO
639 select USB_EHCI_BIG_ENDIAN_DESC
641 This adds support for the PMC-Sierra family of Multi-Service
642 Processor System-On-A-Chips. These parts include a number
643 of integrated peripherals, interfaces and DSPs in addition to
644 a variety of MIPS cores.
647 bool "Ralink based machines"
651 select DMA_NONCOHERENT
654 select SYS_HAS_CPU_MIPS32_R1
655 select SYS_HAS_CPU_MIPS32_R2
656 select SYS_SUPPORTS_32BIT_KERNEL
657 select SYS_SUPPORTS_LITTLE_ENDIAN
658 select SYS_SUPPORTS_MIPS16
659 select SYS_HAS_EARLY_PRINTK
661 select ARCH_HAS_RESET_CONTROLLER
662 select RESET_CONTROLLER
665 bool "SGI IP22 (Indy/Indigo2)"
670 select ARCH_MIGHT_HAVE_PC_SERIO
674 select DEFAULT_SGI_PARTITION
675 select DMA_NONCOHERENT
679 select IP22_CPU_SCACHE
681 select GENERIC_ISA_DMA_SUPPORT_BROKEN
683 select SGI_HAS_INDYDOG
689 select SYS_HAS_CPU_R4X00
690 select SYS_HAS_CPU_R5000
691 select SYS_HAS_EARLY_PRINTK
692 select SYS_SUPPORTS_32BIT_KERNEL
693 select SYS_SUPPORTS_64BIT_KERNEL
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select MIPS_L1_CACHE_SHIFT_7
697 This are the SGI Indy, Challenge S and Indigo2, as well as certain
698 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
699 that runs on these, say Y here.
702 bool "SGI IP27 (Origin200/2000)"
703 select ARCH_HAS_PHYS_TO_DMA
704 select ARCH_SPARSEMEM_ENABLE
707 select ARC_CMDLINE_ONLY
709 select DEFAULT_SGI_PARTITION
710 select SYS_HAS_EARLY_PRINTK
713 select IRQ_DOMAIN_HIERARCHY
714 select NR_CPUS_DEFAULT_64
715 select PCI_DRIVERS_GENERIC
716 select PCI_XTALK_BRIDGE
717 select SYS_HAS_CPU_R10000
718 select SYS_SUPPORTS_64BIT_KERNEL
719 select SYS_SUPPORTS_BIG_ENDIAN
720 select SYS_SUPPORTS_NUMA
721 select SYS_SUPPORTS_SMP
722 select MIPS_L1_CACHE_SHIFT_7
724 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
725 workstations. To compile a Linux kernel that runs on these, say Y
729 bool "SGI IP28 (Indigo2 R10k)"
734 select ARCH_MIGHT_HAVE_PC_SERIO
738 select DEFAULT_SGI_PARTITION
739 select DMA_NONCOHERENT
740 select GENERIC_ISA_DMA_SUPPORT_BROKEN
746 select SGI_HAS_INDYDOG
752 select SYS_HAS_CPU_R10000
753 select SYS_HAS_EARLY_PRINTK
754 select SYS_SUPPORTS_64BIT_KERNEL
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select MIPS_L1_CACHE_SHIFT_7
758 This is the SGI Indigo2 with R10000 processor. To compile a Linux
759 kernel that runs on these, say Y here.
762 bool "SGI IP30 (Octane/Octane2)"
763 select ARCH_HAS_PHYS_TO_DMA
769 select SYNC_R4K if SMP
773 select IRQ_DOMAIN_HIERARCHY
774 select NR_CPUS_DEFAULT_2
775 select PCI_DRIVERS_GENERIC
776 select PCI_XTALK_BRIDGE
777 select SYS_HAS_EARLY_PRINTK
778 select SYS_HAS_CPU_R10000
779 select SYS_SUPPORTS_64BIT_KERNEL
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_SMP
782 select MIPS_L1_CACHE_SHIFT_7
785 These are the SGI Octane and Octane2 graphics workstations. To
786 compile a Linux kernel that runs on these, say Y here.
792 select ARCH_HAS_PHYS_TO_DMA
798 select DMA_NONCOHERENT
801 select R5000_CPU_SCACHE
802 select RM7000_CPU_SCACHE
803 select SYS_HAS_CPU_R5000
804 select SYS_HAS_CPU_R10000 if BROKEN
805 select SYS_HAS_CPU_RM7000
806 select SYS_HAS_CPU_NEVADA
807 select SYS_SUPPORTS_64BIT_KERNEL
808 select SYS_SUPPORTS_BIG_ENDIAN
810 If you want this kernel to run on SGI O2 workstation, say Y here.
813 bool "Sibyte BCM91120C-CRhine"
815 select SIBYTE_BCM1120
817 select SYS_HAS_CPU_SB1
818 select SYS_SUPPORTS_BIG_ENDIAN
819 select SYS_SUPPORTS_LITTLE_ENDIAN
822 bool "Sibyte BCM91120x-Carmel"
824 select SIBYTE_BCM1120
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_LITTLE_ENDIAN
831 bool "Sibyte BCM91125C-CRhone"
833 select SIBYTE_BCM1125
835 select SYS_HAS_CPU_SB1
836 select SYS_SUPPORTS_BIG_ENDIAN
837 select SYS_SUPPORTS_HIGHMEM
838 select SYS_SUPPORTS_LITTLE_ENDIAN
841 bool "Sibyte BCM91125E-Rhone"
843 select SIBYTE_BCM1125H
845 select SYS_HAS_CPU_SB1
846 select SYS_SUPPORTS_BIG_ENDIAN
847 select SYS_SUPPORTS_LITTLE_ENDIAN
850 bool "Sibyte BCM91250A-SWARM"
852 select HAVE_PATA_PLATFORM
855 select SYS_HAS_CPU_SB1
856 select SYS_SUPPORTS_BIG_ENDIAN
857 select SYS_SUPPORTS_HIGHMEM
858 select SYS_SUPPORTS_LITTLE_ENDIAN
859 select ZONE_DMA32 if 64BIT
860 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
862 config SIBYTE_LITTLESUR
863 bool "Sibyte BCM91250C2-LittleSur"
865 select HAVE_PATA_PLATFORM
868 select SYS_HAS_CPU_SB1
869 select SYS_SUPPORTS_BIG_ENDIAN
870 select SYS_SUPPORTS_HIGHMEM
871 select SYS_SUPPORTS_LITTLE_ENDIAN
872 select ZONE_DMA32 if 64BIT
874 config SIBYTE_SENTOSA
875 bool "Sibyte BCM91250E-Sentosa"
879 select SYS_HAS_CPU_SB1
880 select SYS_SUPPORTS_BIG_ENDIAN
881 select SYS_SUPPORTS_LITTLE_ENDIAN
882 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
885 bool "Sibyte BCM91480B-BigSur"
887 select NR_CPUS_DEFAULT_4
888 select SIBYTE_BCM1x80
890 select SYS_HAS_CPU_SB1
891 select SYS_SUPPORTS_BIG_ENDIAN
892 select SYS_SUPPORTS_HIGHMEM
893 select SYS_SUPPORTS_LITTLE_ENDIAN
894 select ZONE_DMA32 if 64BIT
895 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
898 bool "SNI RM200/300/400"
901 select FW_ARC if CPU_LITTLE_ENDIAN
902 select FW_ARC32 if CPU_LITTLE_ENDIAN
903 select FW_SNIPROM if CPU_BIG_ENDIAN
904 select ARCH_MAY_HAVE_PC_FDC
905 select ARCH_MIGHT_HAVE_PC_PARPORT
906 select ARCH_MIGHT_HAVE_PC_SERIO
910 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
911 select DMA_NONCOHERENT
912 select GENERIC_ISA_DMA
914 select HAVE_PCSPKR_PLATFORM
920 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
921 select SYS_HAS_CPU_R4X00
922 select SYS_HAS_CPU_R5000
923 select SYS_HAS_CPU_R10000
924 select R5000_CPU_SCACHE
925 select SYS_HAS_EARLY_PRINTK
926 select SYS_SUPPORTS_32BIT_KERNEL
927 select SYS_SUPPORTS_64BIT_KERNEL
928 select SYS_SUPPORTS_BIG_ENDIAN
929 select SYS_SUPPORTS_HIGHMEM
930 select SYS_SUPPORTS_LITTLE_ENDIAN
932 The SNI RM200/300/400 are MIPS-based machines manufactured by
933 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
934 Technology and now in turn merged with Fujitsu. Say Y here to
935 support this machine type.
938 bool "Toshiba TX39 series based machines"
941 bool "Toshiba TX49 series based machines"
943 config MIKROTIK_RB532
944 bool "Mikrotik RB532 boards"
947 select DMA_NONCOHERENT
950 select SYS_HAS_CPU_MIPS32_R1
951 select SYS_SUPPORTS_32BIT_KERNEL
952 select SYS_SUPPORTS_LITTLE_ENDIAN
956 select MIPS_L1_CACHE_SHIFT_4
958 Support the Mikrotik(tm) RouterBoard 532 series,
959 based on the IDT RC32434 SoC.
961 config CAVIUM_OCTEON_SOC
962 bool "Cavium Networks Octeon SoC based boards"
964 select ARCH_HAS_PHYS_TO_DMA
966 select PHYS_ADDR_T_64BIT
967 select SYS_SUPPORTS_64BIT_KERNEL
968 select SYS_SUPPORTS_BIG_ENDIAN
970 select EDAC_ATOMIC_SCRUB
971 select SYS_SUPPORTS_LITTLE_ENDIAN
972 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
973 select SYS_HAS_EARLY_PRINTK
974 select SYS_HAS_CPU_CAVIUM_OCTEON
980 select ARCH_SPARSEMEM_ENABLE
981 select SYS_SUPPORTS_SMP
982 select NR_CPUS_DEFAULT_64
983 select MIPS_NR_CPU_NR_MAP_1024
985 select MTD_COMPLEX_MAPPINGS
987 select SYS_SUPPORTS_RELOCATABLE
989 This option supports all of the Octeon reference boards from Cavium
990 Networks. It builds a kernel that dynamically determines the Octeon
991 CPU type and supports all known board reference implementations.
992 Some of the supported boards are:
999 Say Y here for most Octeon reference boards.
1001 config NLM_XLR_BOARD
1002 bool "Netlogic XLR/XLS based systems"
1005 select SYS_HAS_CPU_XLR
1006 select SYS_SUPPORTS_SMP
1008 select SWAP_IO_SPACE
1009 select SYS_SUPPORTS_32BIT_KERNEL
1010 select SYS_SUPPORTS_64BIT_KERNEL
1011 select PHYS_ADDR_T_64BIT
1012 select SYS_SUPPORTS_BIG_ENDIAN
1013 select SYS_SUPPORTS_HIGHMEM
1014 select NR_CPUS_DEFAULT_32
1018 select ZONE_DMA32 if 64BIT
1020 select SYS_HAS_EARLY_PRINTK
1021 select SYS_SUPPORTS_ZBOOT
1022 select SYS_SUPPORTS_ZBOOT_UART16550
1024 Support for systems based on Netlogic XLR and XLS processors.
1025 Say Y here if you have a XLR or XLS based board.
1027 config NLM_XLP_BOARD
1028 bool "Netlogic XLP based systems"
1031 select SYS_HAS_CPU_XLP
1032 select SYS_SUPPORTS_SMP
1034 select SYS_SUPPORTS_32BIT_KERNEL
1035 select SYS_SUPPORTS_64BIT_KERNEL
1036 select PHYS_ADDR_T_64BIT
1038 select SYS_SUPPORTS_BIG_ENDIAN
1039 select SYS_SUPPORTS_LITTLE_ENDIAN
1040 select SYS_SUPPORTS_HIGHMEM
1041 select NR_CPUS_DEFAULT_32
1045 select ZONE_DMA32 if 64BIT
1047 select SYS_HAS_EARLY_PRINTK
1049 select SYS_SUPPORTS_ZBOOT
1050 select SYS_SUPPORTS_ZBOOT_UART16550
1052 This board is based on Netlogic XLP Processor.
1053 Say Y here if you have a XLP based board.
1055 config MIPS_PARAVIRT
1056 bool "Para-Virtualized guest system"
1059 select SYS_SUPPORTS_64BIT_KERNEL
1060 select SYS_SUPPORTS_32BIT_KERNEL
1061 select SYS_SUPPORTS_BIG_ENDIAN
1062 select SYS_SUPPORTS_SMP
1063 select NR_CPUS_DEFAULT_4
1064 select SYS_HAS_EARLY_PRINTK
1065 select SYS_HAS_CPU_MIPS32_R2
1066 select SYS_HAS_CPU_MIPS64_R2
1067 select SYS_HAS_CPU_CAVIUM_OCTEON
1069 select SWAP_IO_SPACE
1071 This option supports guest running under ????
1075 source "arch/mips/alchemy/Kconfig"
1076 source "arch/mips/ath25/Kconfig"
1077 source "arch/mips/ath79/Kconfig"
1078 source "arch/mips/bcm47xx/Kconfig"
1079 source "arch/mips/bcm63xx/Kconfig"
1080 source "arch/mips/bmips/Kconfig"
1081 source "arch/mips/generic/Kconfig"
1082 source "arch/mips/jazz/Kconfig"
1083 source "arch/mips/jz4740/Kconfig"
1084 source "arch/mips/lantiq/Kconfig"
1085 source "arch/mips/lasat/Kconfig"
1086 source "arch/mips/pic32/Kconfig"
1087 source "arch/mips/pistachio/Kconfig"
1088 source "arch/mips/pmcs-msp71xx/Kconfig"
1089 source "arch/mips/ralink/Kconfig"
1090 source "arch/mips/sgi-ip27/Kconfig"
1091 source "arch/mips/sibyte/Kconfig"
1092 source "arch/mips/txx9/Kconfig"
1093 source "arch/mips/vr41xx/Kconfig"
1094 source "arch/mips/cavium-octeon/Kconfig"
1095 source "arch/mips/loongson2ef/Kconfig"
1096 source "arch/mips/loongson32/Kconfig"
1097 source "arch/mips/loongson64/Kconfig"
1098 source "arch/mips/netlogic/Kconfig"
1099 source "arch/mips/paravirt/Kconfig"
1103 config GENERIC_HWEIGHT
1107 config GENERIC_CALIBRATE_DELAY
1111 config SCHED_OMIT_FRAME_POINTER
1116 # Select some configuration options automatically based on user selections.
1121 config ARCH_MAY_HAVE_PC_FDC
1157 config MIPS_CLOCK_VSYSCALL
1158 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1167 config ARCH_SUPPORTS_UPROBES
1170 config DMA_MAYBE_COHERENT
1171 select ARCH_HAS_DMA_COHERENCE_H
1172 select DMA_NONCOHERENT
1175 config DMA_PERDEV_COHERENT
1177 select ARCH_HAS_SETUP_DMA_OPS
1178 select DMA_NONCOHERENT
1180 config DMA_NONCOHERENT
1183 # MIPS allows mixing "slightly different" Cacheability and Coherency
1184 # Attribute bits. It is believed that the uncached access through
1185 # KSEG1 and the implementation specific "uncached accelerated" used
1186 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1187 # significant advantages.
1189 select ARCH_HAS_DMA_WRITE_COMBINE
1190 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1191 select ARCH_HAS_UNCACHED_SEGMENT
1192 select DMA_NONCOHERENT_MMAP
1193 select DMA_NONCOHERENT_CACHE_SYNC
1194 select NEED_DMA_MAP_STATE
1196 config SYS_HAS_EARLY_PRINTK
1199 config SYS_SUPPORTS_HOTPLUG_CPU
1202 config MIPS_BONITO64
1217 config NO_IOPORT_MAP
1221 def_bool CPU_NO_LOAD_STORE_LR
1223 config GENERIC_ISA_DMA
1225 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1228 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1230 select GENERIC_ISA_DMA
1235 config HOLES_IN_ZONE
1238 config SYS_SUPPORTS_RELOCATABLE
1241 Selected if the platform supports relocating the kernel.
1242 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1243 to allow access to command line and entropy sources.
1245 config MIPS_CBPF_JIT
1247 depends on BPF_JIT && HAVE_CBPF_JIT
1249 config MIPS_EBPF_JIT
1251 depends on BPF_JIT && HAVE_EBPF_JIT
1255 # Endianness selection. Sufficiently obscure so many users don't know what to
1256 # answer,so we try hard to limit the available choices. Also the use of a
1257 # choice statement should be more obvious to the user.
1260 prompt "Endianness selection"
1262 Some MIPS machines can be configured for either little or big endian
1263 byte order. These modes require different kernels and a different
1264 Linux distribution. In general there is one preferred byteorder for a
1265 particular system but some systems are just as commonly used in the
1266 one or the other endianness.
1268 config CPU_BIG_ENDIAN
1270 depends on SYS_SUPPORTS_BIG_ENDIAN
1272 config CPU_LITTLE_ENDIAN
1273 bool "Little endian"
1274 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1281 config SYS_SUPPORTS_APM_EMULATION
1284 config SYS_SUPPORTS_BIG_ENDIAN
1287 config SYS_SUPPORTS_LITTLE_ENDIAN
1290 config SYS_SUPPORTS_HUGETLBFS
1292 depends on CPU_SUPPORTS_HUGEPAGES
1295 config MIPS_HUGE_TLB_SUPPORT
1296 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1313 config PCI_GT64XXX_PCI0
1316 config PCI_XTALK_BRIDGE
1319 config NO_EXCEPT_FILL
1326 select DMA_NONCOHERENT
1328 select SWAP_IO_SPACE
1329 select SYS_HAS_CPU_R5500
1330 select SYS_SUPPORTS_32BIT_KERNEL
1331 select SYS_SUPPORTS_64BIT_KERNEL
1332 select SYS_SUPPORTS_BIG_ENDIAN
1339 select DMA_NONCOHERENT
1340 select SYS_HAS_CPU_MIPS32_R2
1341 select SYS_SUPPORTS_32BIT_KERNEL
1342 select SYS_SUPPORTS_LITTLE_ENDIAN
1343 select SYS_SUPPORTS_BIG_ENDIAN
1344 select SYS_SUPPORTS_MIPS16
1345 select CPU_MIPSR2_IRQ_VI
1354 config SWAP_IO_SPACE
1357 config SGI_HAS_INDYDOG
1369 config SGI_HAS_ZILOG
1372 config SGI_HAS_I8042
1375 config DEFAULT_SGI_PARTITION
1387 config MIPS_L1_CACHE_SHIFT_4
1390 config MIPS_L1_CACHE_SHIFT_5
1393 config MIPS_L1_CACHE_SHIFT_6
1396 config MIPS_L1_CACHE_SHIFT_7
1399 config MIPS_L1_CACHE_SHIFT
1401 default "7" if MIPS_L1_CACHE_SHIFT_7
1402 default "6" if MIPS_L1_CACHE_SHIFT_6
1403 default "5" if MIPS_L1_CACHE_SHIFT_5
1404 default "4" if MIPS_L1_CACHE_SHIFT_4
1407 config HAVE_STD_PC_SERIAL_PORT
1410 config ARC_CMDLINE_ONLY
1414 bool "ARC console support"
1415 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1429 menu "CPU selection"
1435 config CPU_LOONGSON64
1436 bool "Loongson 64-bit CPU"
1437 depends on SYS_HAS_CPU_LOONGSON64
1438 select ARCH_HAS_PHYS_TO_DMA
1440 select CPU_HAS_PREFETCH
1441 select CPU_SUPPORTS_64BIT_KERNEL
1442 select CPU_SUPPORTS_HIGHMEM
1443 select CPU_SUPPORTS_HUGEPAGES
1444 select CPU_SUPPORTS_MSA
1445 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1446 select CPU_MIPSR2_IRQ_VI
1447 select WEAK_ORDERING
1448 select WEAK_REORDERING_BEYOND_LLSC
1449 select MIPS_ASID_BITS_VARIABLE
1450 select MIPS_PGD_C0_CONTEXT
1451 select MIPS_L1_CACHE_SHIFT_6
1455 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1456 cores implements the MIPS64R2 instruction set with many extensions,
1457 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1458 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1459 Loongson-2E/2F is not covered here and will be removed in future.
1461 config LOONGSON3_ENHANCEMENT
1462 bool "New Loongson-3 CPU Enhancements"
1464 depends on CPU_LOONGSON64
1466 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1467 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1468 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1469 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1470 Fast TLB refill support, etc.
1472 This option enable those enhancements which are not probed at run
1473 time. If you want a generic kernel to run on all Loongson 3 machines,
1474 please say 'N' here. If you want a high-performance kernel to run on
1475 new Loongson-3 machines only, please say 'Y' here.
1477 config CPU_LOONGSON3_WORKAROUNDS
1478 bool "Old Loongson-3 LLSC Workarounds"
1480 depends on CPU_LOONGSON64
1482 Loongson-3 processors have the llsc issues which require workarounds.
1483 Without workarounds the system may hang unexpectedly.
1485 Newer Loongson-3 will fix these issues and no workarounds are needed.
1486 The workarounds have no significant side effect on them but may
1487 decrease the performance of the system so this option should be
1488 disabled unless the kernel is intended to be run on old systems.
1490 If unsure, please say Y.
1492 config CPU_LOONGSON2E
1494 depends on SYS_HAS_CPU_LOONGSON2E
1495 select CPU_LOONGSON2EF
1497 The Loongson 2E processor implements the MIPS III instruction set
1498 with many extensions.
1500 It has an internal FPGA northbridge, which is compatible to
1503 config CPU_LOONGSON2F
1505 depends on SYS_HAS_CPU_LOONGSON2F
1506 select CPU_LOONGSON2EF
1509 The Loongson 2F processor implements the MIPS III instruction set
1510 with many extensions.
1512 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1513 have a similar programming interface with FPGA northbridge used in
1516 config CPU_LOONGSON1B
1518 depends on SYS_HAS_CPU_LOONGSON1B
1519 select CPU_LOONGSON32
1520 select LEDS_GPIO_REGISTER
1522 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1523 Release 1 instruction set and part of the MIPS32 Release 2
1526 config CPU_LOONGSON1C
1528 depends on SYS_HAS_CPU_LOONGSON1C
1529 select CPU_LOONGSON32
1530 select LEDS_GPIO_REGISTER
1532 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1533 Release 1 instruction set and part of the MIPS32 Release 2
1536 config CPU_MIPS32_R1
1537 bool "MIPS32 Release 1"
1538 depends on SYS_HAS_CPU_MIPS32_R1
1539 select CPU_HAS_PREFETCH
1540 select CPU_SUPPORTS_32BIT_KERNEL
1541 select CPU_SUPPORTS_HIGHMEM
1543 Choose this option to build a kernel for release 1 or later of the
1544 MIPS32 architecture. Most modern embedded systems with a 32-bit
1545 MIPS processor are based on a MIPS32 processor. If you know the
1546 specific type of processor in your system, choose those that one
1547 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1548 Release 2 of the MIPS32 architecture is available since several
1549 years so chances are you even have a MIPS32 Release 2 processor
1550 in which case you should choose CPU_MIPS32_R2 instead for better
1553 config CPU_MIPS32_R2
1554 bool "MIPS32 Release 2"
1555 depends on SYS_HAS_CPU_MIPS32_R2
1556 select CPU_HAS_PREFETCH
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_MSA
1562 Choose this option to build a kernel for release 2 or later of the
1563 MIPS32 architecture. Most modern embedded systems with a 32-bit
1564 MIPS processor are based on a MIPS32 processor. If you know the
1565 specific type of processor in your system, choose those that one
1566 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1568 config CPU_MIPS32_R6
1569 bool "MIPS32 Release 6"
1570 depends on SYS_HAS_CPU_MIPS32_R6
1571 select CPU_HAS_PREFETCH
1572 select CPU_NO_LOAD_STORE_LR
1573 select CPU_SUPPORTS_32BIT_KERNEL
1574 select CPU_SUPPORTS_HIGHMEM
1575 select CPU_SUPPORTS_MSA
1577 select MIPS_O32_FP64_SUPPORT
1579 Choose this option to build a kernel for release 6 or later of the
1580 MIPS32 architecture. New MIPS processors, starting with the Warrior
1581 family, are based on a MIPS32r6 processor. If you own an older
1582 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1584 config CPU_MIPS64_R1
1585 bool "MIPS64 Release 1"
1586 depends on SYS_HAS_CPU_MIPS64_R1
1587 select CPU_HAS_PREFETCH
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HIGHMEM
1591 select CPU_SUPPORTS_HUGEPAGES
1593 Choose this option to build a kernel for release 1 or later of the
1594 MIPS64 architecture. Many modern embedded systems with a 64-bit
1595 MIPS processor are based on a MIPS64 processor. If you know the
1596 specific type of processor in your system, choose those that one
1597 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1598 Release 2 of the MIPS64 architecture is available since several
1599 years so chances are you even have a MIPS64 Release 2 processor
1600 in which case you should choose CPU_MIPS64_R2 instead for better
1603 config CPU_MIPS64_R2
1604 bool "MIPS64 Release 2"
1605 depends on SYS_HAS_CPU_MIPS64_R2
1606 select CPU_HAS_PREFETCH
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HIGHMEM
1610 select CPU_SUPPORTS_HUGEPAGES
1611 select CPU_SUPPORTS_MSA
1614 Choose this option to build a kernel for release 2 or later of the
1615 MIPS64 architecture. Many modern embedded systems with a 64-bit
1616 MIPS processor are based on a MIPS64 processor. If you know the
1617 specific type of processor in your system, choose those that one
1618 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1620 config CPU_MIPS64_R6
1621 bool "MIPS64 Release 6"
1622 depends on SYS_HAS_CPU_MIPS64_R6
1623 select CPU_HAS_PREFETCH
1624 select CPU_NO_LOAD_STORE_LR
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HIGHMEM
1628 select CPU_SUPPORTS_HUGEPAGES
1629 select CPU_SUPPORTS_MSA
1630 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1633 Choose this option to build a kernel for release 6 or later of the
1634 MIPS64 architecture. New MIPS processors, starting with the Warrior
1635 family, are based on a MIPS64r6 processor. If you own an older
1636 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1640 depends on SYS_HAS_CPU_R3000
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_HIGHMEM
1646 Please make sure to pick the right CPU type. Linux/MIPS is not
1647 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1648 *not* work on R4000 machines and vice versa. However, since most
1649 of the supported machines have an R4000 (or similar) CPU, R4x00
1650 might be a safe bet. If the resulting kernel does not work,
1651 try to recompile with R3000.
1655 depends on SYS_HAS_CPU_TX39XX
1656 select CPU_SUPPORTS_32BIT_KERNEL
1661 depends on SYS_HAS_CPU_VR41XX
1662 select CPU_SUPPORTS_32BIT_KERNEL
1663 select CPU_SUPPORTS_64BIT_KERNEL
1665 The options selects support for the NEC VR4100 series of processors.
1666 Only choose this option if you have one of these processors as a
1667 kernel built with this option will not run on any other type of
1668 processor or vice versa.
1672 depends on SYS_HAS_CPU_R4X00
1673 select CPU_SUPPORTS_32BIT_KERNEL
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select CPU_SUPPORTS_HUGEPAGES
1677 MIPS Technologies R4000-series processors other than 4300, including
1678 the R4000, R4400, R4600, and 4700.
1682 depends on SYS_HAS_CPU_TX49XX
1683 select CPU_HAS_PREFETCH
1684 select CPU_SUPPORTS_32BIT_KERNEL
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select CPU_SUPPORTS_HUGEPAGES
1690 depends on SYS_HAS_CPU_R5000
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HUGEPAGES
1695 MIPS Technologies R5000-series processors other than the Nevada.
1699 depends on SYS_HAS_CPU_R5500
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_SUPPORTS_HUGEPAGES
1704 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1709 depends on SYS_HAS_CPU_NEVADA
1710 select CPU_SUPPORTS_32BIT_KERNEL
1711 select CPU_SUPPORTS_64BIT_KERNEL
1712 select CPU_SUPPORTS_HUGEPAGES
1714 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1718 depends on SYS_HAS_CPU_R10000
1719 select CPU_HAS_PREFETCH
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_HUGEPAGES
1725 MIPS Technologies R10000-series processors.
1729 depends on SYS_HAS_CPU_RM7000
1730 select CPU_HAS_PREFETCH
1731 select CPU_SUPPORTS_32BIT_KERNEL
1732 select CPU_SUPPORTS_64BIT_KERNEL
1733 select CPU_SUPPORTS_HIGHMEM
1734 select CPU_SUPPORTS_HUGEPAGES
1738 depends on SYS_HAS_CPU_SB1
1739 select CPU_SUPPORTS_32BIT_KERNEL
1740 select CPU_SUPPORTS_64BIT_KERNEL
1741 select CPU_SUPPORTS_HIGHMEM
1742 select CPU_SUPPORTS_HUGEPAGES
1743 select WEAK_ORDERING
1745 config CPU_CAVIUM_OCTEON
1746 bool "Cavium Octeon processor"
1747 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1748 select CPU_HAS_PREFETCH
1749 select CPU_SUPPORTS_64BIT_KERNEL
1750 select WEAK_ORDERING
1751 select CPU_SUPPORTS_HIGHMEM
1752 select CPU_SUPPORTS_HUGEPAGES
1753 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1754 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1755 select MIPS_L1_CACHE_SHIFT_7
1758 The Cavium Octeon processor is a highly integrated chip containing
1759 many ethernet hardware widgets for networking tasks. The processor
1760 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1761 Full details can be found at http://www.caviumnetworks.com.
1764 bool "Broadcom BMIPS"
1765 depends on SYS_HAS_CPU_BMIPS
1767 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1768 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1769 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1770 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1771 select CPU_SUPPORTS_32BIT_KERNEL
1772 select DMA_NONCOHERENT
1774 select SWAP_IO_SPACE
1775 select WEAK_ORDERING
1776 select CPU_SUPPORTS_HIGHMEM
1777 select CPU_HAS_PREFETCH
1778 select CPU_SUPPORTS_CPUFREQ
1779 select MIPS_EXTERNAL_TIMER
1781 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1784 bool "Netlogic XLR SoC"
1785 depends on SYS_HAS_CPU_XLR
1786 select CPU_SUPPORTS_32BIT_KERNEL
1787 select CPU_SUPPORTS_64BIT_KERNEL
1788 select CPU_SUPPORTS_HIGHMEM
1789 select CPU_SUPPORTS_HUGEPAGES
1790 select WEAK_ORDERING
1791 select WEAK_REORDERING_BEYOND_LLSC
1793 Netlogic Microsystems XLR/XLS processors.
1796 bool "Netlogic XLP SoC"
1797 depends on SYS_HAS_CPU_XLP
1798 select CPU_SUPPORTS_32BIT_KERNEL
1799 select CPU_SUPPORTS_64BIT_KERNEL
1800 select CPU_SUPPORTS_HIGHMEM
1801 select WEAK_ORDERING
1802 select WEAK_REORDERING_BEYOND_LLSC
1803 select CPU_HAS_PREFETCH
1805 select CPU_SUPPORTS_HUGEPAGES
1806 select MIPS_ASID_BITS_VARIABLE
1808 Netlogic Microsystems XLP processors.
1811 config CPU_MIPS32_3_5_FEATURES
1812 bool "MIPS32 Release 3.5 Features"
1813 depends on SYS_HAS_CPU_MIPS32_R3_5
1814 depends on CPU_MIPS32_R2 || CPU_MIPS32_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
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_R3000
1992 config SYS_HAS_CPU_TX39XX
1995 config SYS_HAS_CPU_VR41XX
1998 config SYS_HAS_CPU_R4X00
2001 config SYS_HAS_CPU_TX49XX
2004 config SYS_HAS_CPU_R5000
2007 config SYS_HAS_CPU_R5500
2010 config SYS_HAS_CPU_NEVADA
2013 config SYS_HAS_CPU_R10000
2015 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2017 config SYS_HAS_CPU_RM7000
2020 config SYS_HAS_CPU_SB1
2023 config SYS_HAS_CPU_CAVIUM_OCTEON
2026 config SYS_HAS_CPU_BMIPS
2029 config SYS_HAS_CPU_BMIPS32_3300
2031 select SYS_HAS_CPU_BMIPS
2033 config SYS_HAS_CPU_BMIPS4350
2035 select SYS_HAS_CPU_BMIPS
2037 config SYS_HAS_CPU_BMIPS4380
2039 select SYS_HAS_CPU_BMIPS
2041 config SYS_HAS_CPU_BMIPS5000
2043 select SYS_HAS_CPU_BMIPS
2044 select ARCH_HAS_SYNC_DMA_FOR_CPU
2046 config SYS_HAS_CPU_XLR
2049 config SYS_HAS_CPU_XLP
2053 # CPU may reorder R->R, R->W, W->R, W->W
2054 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2056 config WEAK_ORDERING
2060 # CPU may reorder reads and writes beyond LL/SC
2061 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2063 config WEAK_REORDERING_BEYOND_LLSC
2068 # These two indicate any level of the MIPS32 and MIPS64 architecture
2072 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2076 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2079 # These indicate the revision of the architecture
2083 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2087 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2089 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2094 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2096 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2097 select HAVE_ARCH_BITREVERSE
2098 select MIPS_ASID_BITS_VARIABLE
2099 select MIPS_CRC_SUPPORT
2102 config TARGET_ISA_REV
2104 default 1 if CPU_MIPSR1
2105 default 2 if CPU_MIPSR2
2106 default 6 if CPU_MIPSR6
2109 Reflects the ISA revision being targeted by the kernel build. This
2110 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2118 config SYS_SUPPORTS_32BIT_KERNEL
2120 config SYS_SUPPORTS_64BIT_KERNEL
2122 config CPU_SUPPORTS_32BIT_KERNEL
2124 config CPU_SUPPORTS_64BIT_KERNEL
2126 config CPU_SUPPORTS_CPUFREQ
2128 config CPU_SUPPORTS_ADDRWINCFG
2130 config CPU_SUPPORTS_HUGEPAGES
2132 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2133 config MIPS_PGD_C0_CONTEXT
2135 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2138 # Set to y for ptrace access to watch registers.
2140 config HARDWARE_WATCHPOINTS
2142 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2147 prompt "Kernel code model"
2149 You should only select this option if you have a workload that
2150 actually benefits from 64-bit processing or if your machine has
2151 large memory. You will only be presented a single option in this
2152 menu if your system does not support both 32-bit and 64-bit kernels.
2155 bool "32-bit kernel"
2156 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2159 Select this option if you want to build a 32-bit kernel.
2162 bool "64-bit kernel"
2163 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2165 Select this option if you want to build a 64-bit kernel.
2170 bool "KVM Guest Kernel"
2171 depends on BROKEN_ON_SMP
2173 Select this option if building a guest kernel for KVM (Trap & Emulate)
2176 config KVM_GUEST_TIMER_FREQ
2177 int "Count/Compare Timer Frequency (MHz)"
2178 depends on KVM_GUEST
2181 Set this to non-zero if building a guest kernel for KVM to skip RTC
2182 emulation when determining guest CPU Frequency. Instead, the guest's
2183 timer frequency is specified directly.
2185 config MIPS_VA_BITS_48
2186 bool "48 bits virtual memory"
2189 Support a maximum at least 48 bits of application virtual
2190 memory. Default is 40 bits or less, depending on the CPU.
2191 For page sizes 16k and above, this option results in a small
2192 memory overhead for page tables. For 4k page size, a fourth
2193 level of page tables is added which imposes both a memory
2194 overhead as well as slower TLB fault handling.
2199 prompt "Kernel page size"
2200 default PAGE_SIZE_4KB
2202 config PAGE_SIZE_4KB
2204 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2206 This option select the standard 4kB Linux page size. On some
2207 R3000-family processors this is the only available page size. Using
2208 4kB page size will minimize memory consumption and is therefore
2209 recommended for low memory systems.
2211 config PAGE_SIZE_8KB
2213 depends on CPU_CAVIUM_OCTEON
2214 depends on !MIPS_VA_BITS_48
2216 Using 8kB page size will result in higher performance kernel at
2217 the price of higher memory consumption. This option is available
2218 only on cnMIPS processors. Note that you will need a suitable Linux
2219 distribution to support this.
2221 config PAGE_SIZE_16KB
2223 depends on !CPU_R3000 && !CPU_TX39XX
2225 Using 16kB page size will result in higher performance kernel at
2226 the price of higher memory consumption. This option is available on
2227 all non-R3000 family processors. Note that you will need a suitable
2228 Linux distribution to support this.
2230 config PAGE_SIZE_32KB
2232 depends on CPU_CAVIUM_OCTEON
2233 depends on !MIPS_VA_BITS_48
2235 Using 32kB page size will result in higher performance kernel at
2236 the price of higher memory consumption. This option is available
2237 only on cnMIPS cores. Note that you will need a suitable Linux
2238 distribution to support this.
2240 config PAGE_SIZE_64KB
2242 depends on !CPU_R3000 && !CPU_TX39XX
2244 Using 64kB page size will result in higher performance kernel at
2245 the price of higher memory consumption. This option is available on
2246 all non-R3000 family processor. Not that at the time of this
2247 writing this option is still high experimental.
2251 config FORCE_MAX_ZONEORDER
2252 int "Maximum zone order"
2253 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2254 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2255 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2256 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2257 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2258 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2262 The kernel memory allocator divides physically contiguous memory
2263 blocks into "zones", where each zone is a power of two number of
2264 pages. This option selects the largest power of two that the kernel
2265 keeps in the memory allocator. If you need to allocate very large
2266 blocks of physically contiguous memory, then you may need to
2267 increase this value.
2269 This config option is actually maximum order plus one. For example,
2270 a value of 11 means that the largest free memory block is 2^10 pages.
2272 The page size is not necessarily 4KB. Keep this in mind
2273 when choosing a value for this option.
2278 config IP22_CPU_SCACHE
2283 # Support for a MIPS32 / MIPS64 style S-caches
2285 config MIPS_CPU_SCACHE
2289 config R5000_CPU_SCACHE
2293 config RM7000_CPU_SCACHE
2297 config SIBYTE_DMA_PAGEOPS
2298 bool "Use DMA to clear/copy pages"
2301 Instead of using the CPU to zero and copy pages, use a Data Mover
2302 channel. These DMA channels are otherwise unused by the standard
2303 SiByte Linux port. Seems to give a small performance benefit.
2305 config CPU_HAS_PREFETCH
2308 config CPU_GENERIC_DUMP_TLB
2310 default y if !(CPU_R3000 || CPU_TX39XX)
2312 config MIPS_FP_SUPPORT
2313 bool "Floating Point support" if EXPERT
2316 Select y to include support for floating point in the kernel
2317 including initialization of FPU hardware, FP context save & restore
2318 and emulation of an FPU where necessary. Without this support any
2319 userland program attempting to use floating point instructions will
2322 If you know that your userland will not attempt to use floating point
2323 instructions then you can say n here to shrink the kernel a little.
2327 config CPU_R2300_FPU
2329 depends on MIPS_FP_SUPPORT
2330 default y if CPU_R3000 || CPU_TX39XX
2337 depends on MIPS_FP_SUPPORT
2338 default y if !CPU_R2300_FPU
2340 config CPU_R4K_CACHE_TLB
2342 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2345 bool "MIPS MT SMP support (1 TC on each available VPE)"
2347 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2348 select CPU_MIPSR2_IRQ_VI
2349 select CPU_MIPSR2_IRQ_EI
2354 select SYS_SUPPORTS_SMP
2355 select SYS_SUPPORTS_SCHED_SMT
2356 select MIPS_PERF_SHARED_TC_COUNTERS
2358 This is a kernel model which is known as SMVP. This is supported
2359 on cores with the MT ASE and uses the available VPEs to implement
2360 virtual processors which supports SMP. This is equivalent to the
2361 Intel Hyperthreading feature. For further information go to
2362 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2368 bool "SMT (multithreading) scheduler support"
2369 depends on SYS_SUPPORTS_SCHED_SMT
2372 SMT scheduler support improves the CPU scheduler's decision making
2373 when dealing with MIPS MT enabled cores at a cost of slightly
2374 increased overhead in some places. If unsure say N here.
2376 config SYS_SUPPORTS_SCHED_SMT
2379 config SYS_SUPPORTS_MULTITHREADING
2382 config MIPS_MT_FPAFF
2383 bool "Dynamic FPU affinity for FP-intensive threads"
2385 depends on MIPS_MT_SMP
2387 config MIPSR2_TO_R6_EMULATOR
2388 bool "MIPS R2-to-R6 emulator"
2389 depends on CPU_MIPSR6
2390 depends on MIPS_FP_SUPPORT
2393 Choose this option if you want to run non-R6 MIPS userland code.
2394 Even if you say 'Y' here, the emulator will still be disabled by
2395 default. You can enable it using the 'mipsr2emu' kernel option.
2396 The only reason this is a build-time option is to save ~14K from the
2399 config SYS_SUPPORTS_VPE_LOADER
2401 depends on SYS_SUPPORTS_MULTITHREADING
2403 Indicates that the platform supports the VPE loader, and provides
2406 config MIPS_VPE_LOADER
2407 bool "VPE loader support."
2408 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2409 select CPU_MIPSR2_IRQ_VI
2410 select CPU_MIPSR2_IRQ_EI
2413 Includes a loader for loading an elf relocatable object
2414 onto another VPE and running it.
2416 config MIPS_VPE_LOADER_CMP
2419 depends on MIPS_VPE_LOADER && MIPS_CMP
2421 config MIPS_VPE_LOADER_MT
2424 depends on MIPS_VPE_LOADER && !MIPS_CMP
2426 config MIPS_VPE_LOADER_TOM
2427 bool "Load VPE program into memory hidden from linux"
2428 depends on MIPS_VPE_LOADER
2431 The loader can use memory that is present but has been hidden from
2432 Linux using the kernel command line option "mem=xxMB". It's up to
2433 you to ensure the amount you put in the option and the space your
2434 program requires is less or equal to the amount physically present.
2436 config MIPS_VPE_APSP_API
2437 bool "Enable support for AP/SP API (RTLX)"
2438 depends on MIPS_VPE_LOADER
2440 config MIPS_VPE_APSP_API_CMP
2443 depends on MIPS_VPE_APSP_API && MIPS_CMP
2445 config MIPS_VPE_APSP_API_MT
2448 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2451 bool "MIPS CMP framework support (DEPRECATED)"
2452 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2455 select SYS_SUPPORTS_SMP
2456 select WEAK_ORDERING
2459 Select this if you are using a bootloader which implements the "CMP
2460 framework" protocol (ie. YAMON) and want your kernel to make use of
2461 its ability to start secondary CPUs.
2463 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2467 bool "MIPS Coherent Processing System support"
2468 depends on SYS_SUPPORTS_MIPS_CPS
2470 select MIPS_CPS_PM if HOTPLUG_CPU
2472 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2473 select SYS_SUPPORTS_HOTPLUG_CPU
2474 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2475 select SYS_SUPPORTS_SMP
2476 select WEAK_ORDERING
2478 Select this if you wish to run an SMP kernel across multiple cores
2479 within a MIPS Coherent Processing System. When this option is
2480 enabled the kernel will probe for other cores and boot them with
2481 no external assistance. It is safe to enable this when hardware
2482 support is unavailable.
2495 config SB1_PASS_2_WORKAROUNDS
2497 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2500 config SB1_PASS_2_1_WORKAROUNDS
2502 depends on CPU_SB1 && CPU_SB1_PASS_2
2506 prompt "SmartMIPS or microMIPS ASE support"
2508 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2511 Select this if you want neither microMIPS nor SmartMIPS support
2513 config CPU_HAS_SMARTMIPS
2514 depends on SYS_SUPPORTS_SMARTMIPS
2517 SmartMIPS is a extension of the MIPS32 architecture aimed at
2518 increased security at both hardware and software level for
2519 smartcards. Enabling this option will allow proper use of the
2520 SmartMIPS instructions by Linux applications. However a kernel with
2521 this option will not work on a MIPS core without SmartMIPS core. If
2522 you don't know you probably don't have SmartMIPS and should say N
2525 config CPU_MICROMIPS
2526 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2529 When this option is enabled the kernel will be built using the
2535 bool "Support for the MIPS SIMD Architecture"
2536 depends on CPU_SUPPORTS_MSA
2537 depends on MIPS_FP_SUPPORT
2538 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2540 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2541 and a set of SIMD instructions to operate on them. When this option
2542 is enabled the kernel will support allocating & switching MSA
2543 vector register contexts. If you know that your kernel will only be
2544 running on CPUs which do not support MSA or that your userland will
2545 not be making use of it then you may wish to say N here to reduce
2546 the size & complexity of your kernel.
2557 depends on !CPU_DIEI_BROKEN
2560 config CPU_DIEI_BROKEN
2566 config CPU_NO_LOAD_STORE_LR
2569 CPU lacks support for unaligned load and store instructions:
2570 LWL, LWR, SWL, SWR (Load/store word left/right).
2571 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2575 # Vectored interrupt mode is an R2 feature
2577 config CPU_MIPSR2_IRQ_VI
2581 # Extended interrupt mode is an R2 feature
2583 config CPU_MIPSR2_IRQ_EI
2588 depends on !CPU_R3000
2594 config CPU_DADDI_WORKAROUNDS
2597 config CPU_R4000_WORKAROUNDS
2599 select CPU_R4400_WORKAROUNDS
2601 config CPU_R4400_WORKAROUNDS
2604 config CPU_R4X00_BUGS64
2606 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2608 config MIPS_ASID_SHIFT
2610 default 6 if CPU_R3000 || CPU_TX39XX
2613 config MIPS_ASID_BITS
2615 default 0 if MIPS_ASID_BITS_VARIABLE
2616 default 6 if CPU_R3000 || CPU_TX39XX
2619 config MIPS_ASID_BITS_VARIABLE
2622 config MIPS_CRC_SUPPORT
2626 # - Highmem only makes sense for the 32-bit kernel.
2627 # - The current highmem code will only work properly on physically indexed
2628 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2629 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2630 # moment we protect the user and offer the highmem option only on machines
2631 # where it's known to be safe. This will not offer highmem on a few systems
2632 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2633 # indexed CPUs but we're playing safe.
2634 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2635 # know they might have memory configurations that could make use of highmem
2639 bool "High Memory Support"
2640 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2642 config CPU_SUPPORTS_HIGHMEM
2645 config SYS_SUPPORTS_HIGHMEM
2648 config SYS_SUPPORTS_SMARTMIPS
2651 config SYS_SUPPORTS_MICROMIPS
2654 config SYS_SUPPORTS_MIPS16
2657 This option must be set if a kernel might be executed on a MIPS16-
2658 enabled CPU even if MIPS16 is not actually being used. In other
2659 words, it makes the kernel MIPS16-tolerant.
2661 config CPU_SUPPORTS_MSA
2664 config ARCH_FLATMEM_ENABLE
2666 depends on !NUMA && !CPU_LOONGSON2EF
2668 config ARCH_SPARSEMEM_ENABLE
2670 select SPARSEMEM_STATIC if !SGI_IP27
2674 depends on SYS_SUPPORTS_NUMA
2676 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2677 Access). This option improves performance on systems with more
2678 than two nodes; on two node systems it is generally better to
2679 leave it disabled; on single node systems disable this option
2682 config SYS_SUPPORTS_NUMA
2685 config HAVE_SETUP_PER_CPU_AREA
2689 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2694 bool "Relocatable kernel"
2695 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2697 This builds a kernel image that retains relocation information
2698 so it can be loaded someplace besides the default 1MB.
2699 The relocations make the kernel binary about 15% larger,
2700 but are discarded at runtime
2702 config RELOCATION_TABLE_SIZE
2703 hex "Relocation table size"
2704 depends on RELOCATABLE
2705 range 0x0 0x01000000
2706 default "0x00100000"
2708 A table of relocation data will be appended to the kernel binary
2709 and parsed at boot to fix up the relocated kernel.
2711 This option allows the amount of space reserved for the table to be
2712 adjusted, although the default of 1Mb should be ok in most cases.
2714 The build will fail and a valid size suggested if this is too small.
2716 If unsure, leave at the default value.
2718 config RANDOMIZE_BASE
2719 bool "Randomize the address of the kernel image"
2720 depends on RELOCATABLE
2722 Randomizes the physical and virtual address at which the
2723 kernel image is loaded, as a security feature that
2724 deters exploit attempts relying on knowledge of the location
2725 of kernel internals.
2727 Entropy is generated using any coprocessor 0 registers available.
2729 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2733 config RANDOMIZE_BASE_MAX_OFFSET
2734 hex "Maximum kASLR offset" if EXPERT
2735 depends on RANDOMIZE_BASE
2736 range 0x0 0x40000000 if EVA || 64BIT
2737 range 0x0 0x08000000
2738 default "0x01000000"
2740 When kASLR is active, this provides the maximum offset that will
2741 be applied to the kernel image. It should be set according to the
2742 amount of physical RAM available in the target system minus
2743 PHYSICAL_START and must be a power of 2.
2745 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2746 EVA or 64-bit. The default is 16Mb.
2751 depends on NEED_MULTIPLE_NODES
2753 config HW_PERF_EVENTS
2754 bool "Enable hardware performance counter support for perf events"
2755 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2758 Enable hardware performance counter support for perf events. If
2759 disabled, perf events will use software events only.
2762 bool "Multi-Processing support"
2763 depends on SYS_SUPPORTS_SMP
2765 This enables support for systems with more than one CPU. If you have
2766 a system with only one CPU, say N. If you have a system with more
2767 than one CPU, say Y.
2769 If you say N here, the kernel will run on uni- and multiprocessor
2770 machines, but will use only one CPU of a multiprocessor machine. If
2771 you say Y here, the kernel will run on many, but not all,
2772 uniprocessor machines. On a uniprocessor machine, the kernel
2773 will run faster if you say N here.
2775 People using multiprocessor machines who say Y here should also say
2776 Y to "Enhanced Real Time Clock Support", below.
2778 See also the SMP-HOWTO available at
2779 <http://www.tldp.org/docs.html#howto>.
2781 If you don't know what to do here, say N.
2784 bool "Support for hot-pluggable CPUs"
2785 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2787 Say Y here to allow turning CPUs off and on. CPUs can be
2788 controlled through /sys/devices/system/cpu.
2789 (Note: power management support will enable this option
2790 automatically on SMP systems. )
2791 Say N if you want to disable CPU hotplug.
2796 config SYS_SUPPORTS_MIPS_CMP
2799 config SYS_SUPPORTS_MIPS_CPS
2802 config SYS_SUPPORTS_SMP
2805 config NR_CPUS_DEFAULT_4
2808 config NR_CPUS_DEFAULT_8
2811 config NR_CPUS_DEFAULT_16
2814 config NR_CPUS_DEFAULT_32
2817 config NR_CPUS_DEFAULT_64
2821 int "Maximum number of CPUs (2-256)"
2824 default "4" if NR_CPUS_DEFAULT_4
2825 default "8" if NR_CPUS_DEFAULT_8
2826 default "16" if NR_CPUS_DEFAULT_16
2827 default "32" if NR_CPUS_DEFAULT_32
2828 default "64" if NR_CPUS_DEFAULT_64
2830 This allows you to specify the maximum number of CPUs which this
2831 kernel will support. The maximum supported value is 32 for 32-bit
2832 kernel and 64 for 64-bit kernels; the minimum value which makes
2833 sense is 1 for Qemu (useful only for kernel debugging purposes)
2834 and 2 for all others.
2836 This is purely to save memory - each supported CPU adds
2837 approximately eight kilobytes to the kernel image. For best
2838 performance should round up your number of processors to the next
2841 config MIPS_PERF_SHARED_TC_COUNTERS
2844 config MIPS_NR_CPU_NR_MAP_1024
2847 config MIPS_NR_CPU_NR_MAP
2850 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2851 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2854 # Timer Interrupt Frequency Configuration
2858 prompt "Timer frequency"
2861 Allows the configuration of the timer frequency.
2864 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2867 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2870 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2873 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2876 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2879 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2882 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2885 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2889 config SYS_SUPPORTS_24HZ
2892 config SYS_SUPPORTS_48HZ
2895 config SYS_SUPPORTS_100HZ
2898 config SYS_SUPPORTS_128HZ
2901 config SYS_SUPPORTS_250HZ
2904 config SYS_SUPPORTS_256HZ
2907 config SYS_SUPPORTS_1000HZ
2910 config SYS_SUPPORTS_1024HZ
2913 config SYS_SUPPORTS_ARBIT_HZ
2915 default y if !SYS_SUPPORTS_24HZ && \
2916 !SYS_SUPPORTS_48HZ && \
2917 !SYS_SUPPORTS_100HZ && \
2918 !SYS_SUPPORTS_128HZ && \
2919 !SYS_SUPPORTS_250HZ && \
2920 !SYS_SUPPORTS_256HZ && \
2921 !SYS_SUPPORTS_1000HZ && \
2922 !SYS_SUPPORTS_1024HZ
2928 default 100 if HZ_100
2929 default 128 if HZ_128
2930 default 250 if HZ_250
2931 default 256 if HZ_256
2932 default 1000 if HZ_1000
2933 default 1024 if HZ_1024
2936 def_bool HIGH_RES_TIMERS
2939 bool "Kexec system call"
2942 kexec is a system call that implements the ability to shutdown your
2943 current kernel, and to start another kernel. It is like a reboot
2944 but it is independent of the system firmware. And like a reboot
2945 you can start any kernel with it, not just Linux.
2947 The name comes from the similarity to the exec system call.
2949 It is an ongoing process to be certain the hardware in a machine
2950 is properly shutdown, so do not be surprised if this code does not
2951 initially work for you. As of this writing the exact hardware
2952 interface is strongly in flux, so no good recommendation can be
2956 bool "Kernel crash dumps"
2958 Generate crash dump after being started by kexec.
2959 This should be normally only set in special crash dump kernels
2960 which are loaded in the main kernel with kexec-tools into
2961 a specially reserved region and then later executed after
2962 a crash by kdump/kexec. The crash dump kernel must be compiled
2963 to a memory address not used by the main kernel or firmware using
2966 config PHYSICAL_START
2967 hex "Physical address where the kernel is loaded"
2968 default "0xffffffff84000000"
2969 depends on CRASH_DUMP
2971 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2972 If you plan to use kernel for capturing the crash dump change
2973 this value to start of the reserved region (the "X" value as
2974 specified in the "crashkernel=YM@XM" command line boot parameter
2975 passed to the panic-ed kernel).
2978 bool "Enable seccomp to safely compute untrusted bytecode"
2982 This kernel feature is useful for number crunching applications
2983 that may need to compute untrusted bytecode during their
2984 execution. By using pipes or other transports made available to
2985 the process as file descriptors supporting the read/write
2986 syscalls, it's possible to isolate those applications in
2987 their own address space using seccomp. Once seccomp is
2988 enabled via /proc/<pid>/seccomp, it cannot be disabled
2989 and the task is only allowed to execute a few safe syscalls
2990 defined by each seccomp mode.
2992 If unsure, say Y. Only embedded should say N here.
2994 config MIPS_O32_FP64_SUPPORT
2995 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2996 depends on 32BIT || MIPS32_O32
2998 When this is enabled, the kernel will support use of 64-bit floating
2999 point registers with binaries using the O32 ABI along with the
3000 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3001 32-bit MIPS systems this support is at the cost of increasing the
3002 size and complexity of the compiled FPU emulator. Thus if you are
3003 running a MIPS32 system and know that none of your userland binaries
3004 will require 64-bit floating point, you may wish to reduce the size
3005 of your kernel & potentially improve FP emulation performance by
3008 Although binutils currently supports use of this flag the details
3009 concerning its effect upon the O32 ABI in userland are still being
3010 worked on. In order to avoid userland becoming dependant upon current
3011 behaviour before the details have been finalised, this option should
3012 be considered experimental and only enabled by those working upon
3020 select OF_EARLY_FLATTREE
3030 prompt "Kernel appended dtb support" if USE_OF
3031 default MIPS_NO_APPENDED_DTB
3033 config MIPS_NO_APPENDED_DTB
3036 Do not enable appended dtb support.
3038 config MIPS_ELF_APPENDED_DTB
3041 With this option, the boot code will look for a device tree binary
3042 DTB) included in the vmlinux ELF section .appended_dtb. By default
3043 it is empty and the DTB can be appended using binutils command
3046 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3048 This is meant as a backward compatiblity convenience for those
3049 systems with a bootloader that can't be upgraded to accommodate
3050 the documented boot protocol using a device tree.
3052 config MIPS_RAW_APPENDED_DTB
3053 bool "vmlinux.bin or vmlinuz.bin"
3055 With this option, the boot code will look for a device tree binary
3056 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3057 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3059 This is meant as a backward compatibility convenience for those
3060 systems with a bootloader that can't be upgraded to accommodate
3061 the documented boot protocol using a device tree.
3063 Beware that there is very little in terms of protection against
3064 this option being confused by leftover garbage in memory that might
3065 look like a DTB header after a reboot if no actual DTB is appended
3066 to vmlinux.bin. Do not leave this option active in a production kernel
3067 if you don't intend to always append a DTB.
3071 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3072 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3075 default MIPS_CMDLINE_FROM_BOOTLOADER
3077 config MIPS_CMDLINE_FROM_DTB
3079 bool "Dtb kernel arguments if available"
3081 config MIPS_CMDLINE_DTB_EXTEND
3083 bool "Extend dtb kernel arguments with bootloader arguments"
3085 config MIPS_CMDLINE_FROM_BOOTLOADER
3086 bool "Bootloader kernel arguments if available"
3088 config MIPS_CMDLINE_BUILTIN_EXTEND
3089 depends on CMDLINE_BOOL
3090 bool "Extend builtin kernel arguments with bootloader arguments"
3095 config LOCKDEP_SUPPORT
3099 config STACKTRACE_SUPPORT
3103 config PGTABLE_LEVELS
3105 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3106 default 3 if 64BIT && !PAGE_SIZE_64KB
3109 config MIPS_AUTO_PFN_OFFSET
3112 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3114 config PCI_DRIVERS_GENERIC
3115 select PCI_DOMAINS_GENERIC if PCI
3118 config PCI_DRIVERS_LEGACY
3119 def_bool !PCI_DRIVERS_GENERIC
3120 select NO_GENERIC_PCI_IOPORT_MAP
3121 select PCI_DOMAINS if PCI
3124 # ISA support is now enabled via select. Too many systems still have the one
3125 # or other ISA chip on the board that users don't know about so don't expect
3126 # users to choose the right thing ...
3132 bool "TURBOchannel support"
3133 depends on MACH_DECSTATION
3135 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3136 processors. TURBOchannel programming specifications are available
3138 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3140 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3141 Linux driver support status is documented at:
3142 <http://www.linux-mips.org/wiki/DECstation>
3148 config ARCH_MMAP_RND_BITS_MIN
3152 config ARCH_MMAP_RND_BITS_MAX
3156 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3159 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3166 select MIPS_EXTERNAL_TIMER
3179 config MIPS32_COMPAT
3185 config SYSVIPC_COMPAT
3189 bool "Kernel support for o32 binaries"
3191 select ARCH_WANT_OLD_COMPAT_IPC
3193 select MIPS32_COMPAT
3194 select SYSVIPC_COMPAT if SYSVIPC
3196 Select this option if you want to run o32 binaries. These are pure
3197 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3198 existing binaries are in this format.
3203 bool "Kernel support for n32 binaries"
3205 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3207 select MIPS32_COMPAT
3208 select SYSVIPC_COMPAT if SYSVIPC
3210 Select this option if you want to run n32 binaries. These are
3211 64-bit binaries using 32-bit quantities for addressing and certain
3212 data that would normally be 64-bit. They are used in special
3219 default y if MIPS32_O32 || MIPS32_N32
3222 menu "Power management options"
3224 config ARCH_HIBERNATION_POSSIBLE
3226 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3228 config ARCH_SUSPEND_POSSIBLE
3230 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3232 source "kernel/power/Kconfig"
3236 config MIPS_EXTERNAL_TIMER
3239 menu "CPU Power Management"
3241 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3242 source "drivers/cpufreq/Kconfig"
3245 source "drivers/cpuidle/Kconfig"
3249 source "drivers/firmware/Kconfig"
3251 source "arch/mips/kvm/Kconfig"